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5e6908ea | 1 | /* Output Dwarf2 format symbol table information from GCC. |
69bd9368 RS |
2 | Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
3 | 2003 Free Software Foundation, Inc. | |
e9a25f70 JL |
4 | Contributed by Gary Funck (gary@intrepid.com). |
5 | Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com). | |
469ac993 | 6 | Extensively modified by Jason Merrill (jason@cygnus.com). |
a3f97cbb | 7 | |
1322177d | 8 | This file is part of GCC. |
a3f97cbb | 9 | |
1322177d LB |
10 | GCC is free software; you can redistribute it and/or modify it under |
11 | the terms of the GNU General Public License as published by the Free | |
12 | Software Foundation; either version 2, or (at your option) any later | |
13 | version. | |
a3f97cbb | 14 | |
1322177d LB |
15 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
16 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | for more details. | |
a3f97cbb JW |
19 | |
20 | You should have received a copy of the GNU General Public License | |
1322177d LB |
21 | along with GCC; see the file COPYING. If not, write to the Free |
22 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
23 | 02111-1307, USA. */ | |
a3f97cbb | 24 | |
9eb4015a | 25 | /* TODO: Emit .debug_line header even when there are no functions, since |
348bb3c7 JM |
26 | the file numbers are used by .debug_info. Alternately, leave |
27 | out locations for types and decls. | |
28 | Avoid talking about ctors and op= for PODs. | |
29 | Factor out common prologue sequences into multiple CIEs. */ | |
30 | ||
3f76745e JM |
31 | /* The first part of this file deals with the DWARF 2 frame unwind |
32 | information, which is also used by the GCC efficient exception handling | |
33 | mechanism. The second part, controlled only by an #ifdef | |
34 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
35 | information. */ | |
36 | ||
0021b564 | 37 | #include "config.h" |
670ee920 | 38 | #include "system.h" |
4977bab6 ZW |
39 | #include "coretypes.h" |
40 | #include "tm.h" | |
a3f97cbb JW |
41 | #include "tree.h" |
42 | #include "flags.h" | |
11ad4784 | 43 | #include "real.h" |
a3f97cbb JW |
44 | #include "rtl.h" |
45 | #include "hard-reg-set.h" | |
46 | #include "regs.h" | |
47 | #include "insn-config.h" | |
48 | #include "reload.h" | |
52a11cbf | 49 | #include "function.h" |
a3f97cbb | 50 | #include "output.h" |
71dfc51f | 51 | #include "expr.h" |
e78d8e51 | 52 | #include "libfuncs.h" |
3f76745e | 53 | #include "except.h" |
a7cc7f29 | 54 | #include "dwarf2.h" |
76ead72b | 55 | #include "dwarf2out.h" |
2e4b9b8c | 56 | #include "dwarf2asm.h" |
10f0ad3d | 57 | #include "toplev.h" |
1865dbb5 | 58 | #include "varray.h" |
951a525f | 59 | #include "ggc.h" |
881c6935 | 60 | #include "md5.h" |
57bed152 | 61 | #include "tm_p.h" |
2a2b2d43 | 62 | #include "diagnostic.h" |
a51d908e | 63 | #include "debug.h" |
07c9d2eb | 64 | #include "target.h" |
3ac88239 | 65 | #include "langhooks.h" |
cc0017a9 | 66 | #include "hashtab.h" |
1bb17c21 | 67 | #include "cgraph.h" |
a3f97cbb | 68 | |
653e276c | 69 | #ifdef DWARF2_DEBUGGING_INFO |
7080f735 | 70 | static void dwarf2out_source_line (unsigned int, const char *); |
653e276c NB |
71 | #endif |
72 | ||
770ca8c6 JO |
73 | /* DWARF2 Abbreviation Glossary: |
74 | CFA = Canonical Frame Address | |
00a42e21 JM |
75 | a fixed address on the stack which identifies a call frame. |
76 | We define it to be the value of SP just before the call insn. | |
77 | The CFA register and offset, which may change during the course | |
78 | of the function, are used to calculate its value at runtime. | |
a401107d JO |
79 | CFI = Call Frame Instruction |
80 | an instruction for the DWARF2 abstract machine | |
770ca8c6 JO |
81 | CIE = Common Information Entry |
82 | information describing information common to one or more FDEs | |
83 | DIE = Debugging Information Entry | |
84 | FDE = Frame Description Entry | |
85 | information describing the stack call frame, in particular, | |
86 | how to restore registers | |
87 | ||
88 | DW_CFA_... = DWARF2 CFA call frame instruction | |
89 | DW_TAG_... = DWARF2 DIE tag */ | |
90 | ||
0021b564 JM |
91 | /* Decide whether we want to emit frame unwind information for the current |
92 | translation unit. */ | |
93 | ||
94 | int | |
7080f735 | 95 | dwarf2out_do_frame (void) |
0021b564 JM |
96 | { |
97 | return (write_symbols == DWARF2_DEBUG | |
7a0c8d71 | 98 | || write_symbols == VMS_AND_DWARF2_DEBUG |
9ec36da5 | 99 | #ifdef DWARF2_FRAME_INFO |
556273e0 | 100 | || DWARF2_FRAME_INFO |
9ec36da5 | 101 | #endif |
0021b564 | 102 | #ifdef DWARF2_UNWIND_INFO |
14a774a9 | 103 | || flag_unwind_tables |
531073e7 | 104 | || (flag_exceptions && ! USING_SJLJ_EXCEPTIONS) |
0021b564 JM |
105 | #endif |
106 | ); | |
107 | } | |
108 | ||
f3a8e4f5 KG |
109 | /* The size of the target's pointer type. */ |
110 | #ifndef PTR_SIZE | |
111 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) | |
112 | #endif | |
113 | ||
9d340419 RO |
114 | /* Various versions of targetm.eh_frame_section. Note these must appear |
115 | outside the DWARF2_DEBUGGING_INFO || DWARF2_UNWIND_INFO macro guards. */ | |
f3a8e4f5 | 116 | |
9d340419 | 117 | /* Version of targetm.eh_frame_section for systems with named sections. */ |
f3a8e4f5 | 118 | void |
9d340419 | 119 | named_section_eh_frame_section (void) |
f3a8e4f5 KG |
120 | { |
121 | #ifdef EH_FRAME_SECTION_NAME | |
96d0f4dc JJ |
122 | #ifdef HAVE_LD_RO_RW_SECTION_MIXING |
123 | int fde_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0); | |
124 | int per_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/2, /*global=*/1); | |
125 | int lsda_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/0); | |
126 | int flags; | |
127 | ||
128 | flags = (! flag_pic | |
129 | || ((fde_encoding & 0x70) != DW_EH_PE_absptr | |
130 | && (fde_encoding & 0x70) != DW_EH_PE_aligned | |
131 | && (per_encoding & 0x70) != DW_EH_PE_absptr | |
132 | && (per_encoding & 0x70) != DW_EH_PE_aligned | |
133 | && (lsda_encoding & 0x70) != DW_EH_PE_absptr | |
134 | && (lsda_encoding & 0x70) != DW_EH_PE_aligned)) | |
135 | ? 0 : SECTION_WRITE; | |
136 | named_section_flags (EH_FRAME_SECTION_NAME, flags); | |
137 | #else | |
f3a8e4f5 | 138 | named_section_flags (EH_FRAME_SECTION_NAME, SECTION_WRITE); |
96d0f4dc | 139 | #endif |
9d340419 RO |
140 | #endif |
141 | } | |
142 | ||
143 | /* Version of targetm.eh_frame_section for systems using collect2. */ | |
144 | void | |
145 | collect2_eh_frame_section (void) | |
146 | { | |
f3a8e4f5 KG |
147 | tree label = get_file_function_name ('F'); |
148 | ||
149 | data_section (); | |
150 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
5eb99654 | 151 | (*targetm.asm_out.globalize_label) (asm_out_file, IDENTIFIER_POINTER (label)); |
f3a8e4f5 | 152 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
9d340419 RO |
153 | } |
154 | ||
155 | /* Default version of targetm.eh_frame_section. */ | |
156 | void | |
157 | default_eh_frame_section (void) | |
158 | { | |
159 | #ifdef EH_FRAME_SECTION_NAME | |
160 | named_section_eh_frame_section (); | |
161 | #else | |
162 | collect2_eh_frame_section (); | |
f3a8e4f5 KG |
163 | #endif |
164 | } | |
165 | ||
e2500fed GK |
166 | /* Array of RTXes referenced by the debugging information, which therefore |
167 | must be kept around forever. */ | |
168 | static GTY(()) varray_type used_rtx_varray; | |
169 | ||
170 | /* A pointer to the base of a list of incomplete types which might be | |
171 | completed at some later time. incomplete_types_list needs to be a VARRAY | |
172 | because we want to tell the garbage collector about it. */ | |
173 | static GTY(()) varray_type incomplete_types; | |
174 | ||
175 | /* A pointer to the base of a table of references to declaration | |
176 | scopes. This table is a display which tracks the nesting | |
177 | of declaration scopes at the current scope and containing | |
178 | scopes. This table is used to find the proper place to | |
179 | define type declaration DIE's. */ | |
180 | static GTY(()) varray_type decl_scope_table; | |
181 | ||
eaf95893 RK |
182 | /* How to start an assembler comment. */ |
183 | #ifndef ASM_COMMENT_START | |
184 | #define ASM_COMMENT_START ";#" | |
185 | #endif | |
186 | ||
a3f97cbb JW |
187 | typedef struct dw_cfi_struct *dw_cfi_ref; |
188 | typedef struct dw_fde_struct *dw_fde_ref; | |
189 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
190 | |
191 | /* Call frames are described using a sequence of Call Frame | |
192 | Information instructions. The register number, offset | |
193 | and address fields are provided as possible operands; | |
194 | their use is selected by the opcode field. */ | |
71dfc51f | 195 | |
17211ab5 GK |
196 | enum dw_cfi_oprnd_type { |
197 | dw_cfi_oprnd_unused, | |
198 | dw_cfi_oprnd_reg_num, | |
199 | dw_cfi_oprnd_offset, | |
200 | dw_cfi_oprnd_addr, | |
201 | dw_cfi_oprnd_loc | |
202 | }; | |
203 | ||
204 | typedef union dw_cfi_oprnd_struct GTY(()) | |
71dfc51f | 205 | { |
17211ab5 GK |
206 | unsigned long GTY ((tag ("dw_cfi_oprnd_reg_num"))) dw_cfi_reg_num; |
207 | long int GTY ((tag ("dw_cfi_oprnd_offset"))) dw_cfi_offset; | |
208 | const char * GTY ((tag ("dw_cfi_oprnd_addr"))) dw_cfi_addr; | |
209 | struct dw_loc_descr_struct * GTY ((tag ("dw_cfi_oprnd_loc"))) dw_cfi_loc; | |
71dfc51f | 210 | } |
a3f97cbb JW |
211 | dw_cfi_oprnd; |
212 | ||
17211ab5 | 213 | typedef struct dw_cfi_struct GTY(()) |
71dfc51f RK |
214 | { |
215 | dw_cfi_ref dw_cfi_next; | |
216 | enum dwarf_call_frame_info dw_cfi_opc; | |
7080f735 | 217 | dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd1_desc (%1.dw_cfi_opc)"))) |
17211ab5 | 218 | dw_cfi_oprnd1; |
7080f735 | 219 | dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd2_desc (%1.dw_cfi_opc)"))) |
17211ab5 | 220 | dw_cfi_oprnd2; |
71dfc51f | 221 | } |
a3f97cbb JW |
222 | dw_cfi_node; |
223 | ||
7d9d8943 AM |
224 | /* This is how we define the location of the CFA. We use to handle it |
225 | as REG + OFFSET all the time, but now it can be more complex. | |
226 | It can now be either REG + CFA_OFFSET or *(REG + BASE_OFFSET) + CFA_OFFSET. | |
556273e0 | 227 | Instead of passing around REG and OFFSET, we pass a copy |
7d9d8943 | 228 | of this structure. */ |
17211ab5 | 229 | typedef struct cfa_loc GTY(()) |
7d9d8943 | 230 | { |
556273e0 | 231 | unsigned long reg; |
7d9d8943 AM |
232 | long offset; |
233 | long base_offset; | |
234 | int indirect; /* 1 if CFA is accessed via a dereference. */ | |
235 | } dw_cfa_location; | |
236 | ||
a3f97cbb | 237 | /* All call frame descriptions (FDE's) in the GCC generated DWARF |
4b674448 | 238 | refer to a single Common Information Entry (CIE), defined at |
fb530c07 | 239 | the beginning of the .debug_frame section. This use of a single |
a3f97cbb JW |
240 | CIE obviates the need to keep track of multiple CIE's |
241 | in the DWARF generation routines below. */ | |
71dfc51f | 242 | |
17211ab5 | 243 | typedef struct dw_fde_struct GTY(()) |
71dfc51f | 244 | { |
d3e3972c KG |
245 | const char *dw_fde_begin; |
246 | const char *dw_fde_current_label; | |
247 | const char *dw_fde_end; | |
71dfc51f | 248 | dw_cfi_ref dw_fde_cfi; |
52a11cbf | 249 | unsigned funcdef_number; |
b6128b8c | 250 | unsigned all_throwers_are_sibcalls : 1; |
52a11cbf RH |
251 | unsigned nothrow : 1; |
252 | unsigned uses_eh_lsda : 1; | |
71dfc51f | 253 | } |
a3f97cbb JW |
254 | dw_fde_node; |
255 | ||
6d2f8887 | 256 | /* Maximum size (in bytes) of an artificially generated label. */ |
a3f97cbb JW |
257 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 |
258 | ||
a1a4189d JB |
259 | /* The size of addresses as they appear in the Dwarf 2 data. |
260 | Some architectures use word addresses to refer to code locations, | |
261 | but Dwarf 2 info always uses byte addresses. On such machines, | |
262 | Dwarf 2 addresses need to be larger than the architecture's | |
263 | pointers. */ | |
264 | #ifndef DWARF2_ADDR_SIZE | |
265 | #define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT) | |
266 | #endif | |
267 | ||
7e23cb16 | 268 | /* The size in bytes of a DWARF field indicating an offset or length |
a1a4189d JB |
269 | relative to a debug info section, specified to be 4 bytes in the |
270 | DWARF-2 specification. The SGI/MIPS ABI defines it to be the same | |
b13fe8bf | 271 | as PTR_SIZE. */ |
71dfc51f | 272 | |
7e23cb16 JM |
273 | #ifndef DWARF_OFFSET_SIZE |
274 | #define DWARF_OFFSET_SIZE 4 | |
275 | #endif | |
276 | ||
9eb0ef7a KB |
277 | /* According to the (draft) DWARF 3 specification, the initial length |
278 | should either be 4 or 12 bytes. When it's 12 bytes, the first 4 | |
279 | bytes are 0xffffffff, followed by the length stored in the next 8 | |
280 | bytes. | |
281 | ||
282 | However, the SGI/MIPS ABI uses an initial length which is equal to | |
283 | DWARF_OFFSET_SIZE. It is defined (elsewhere) accordingly. */ | |
284 | ||
285 | #ifndef DWARF_INITIAL_LENGTH_SIZE | |
286 | #define DWARF_INITIAL_LENGTH_SIZE (DWARF_OFFSET_SIZE == 4 ? 4 : 12) | |
287 | #endif | |
288 | ||
9a666dda JM |
289 | #define DWARF_VERSION 2 |
290 | ||
7e23cb16 JM |
291 | /* Round SIZE up to the nearest BOUNDARY. */ |
292 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
262b6384 | 293 | ((((SIZE) + (BOUNDARY) - 1) / (BOUNDARY)) * (BOUNDARY)) |
a3f97cbb | 294 | |
a3f97cbb | 295 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
27c35f4b | 296 | #ifndef DWARF_CIE_DATA_ALIGNMENT |
469ac993 | 297 | #ifdef STACK_GROWS_DOWNWARD |
08cb3d38 | 298 | #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD)) |
469ac993 | 299 | #else |
08cb3d38 | 300 | #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD) |
469ac993 | 301 | #endif |
2ad9852d | 302 | #endif |
a3f97cbb | 303 | |
3f76745e JM |
304 | /* A pointer to the base of a table that contains frame description |
305 | information for each routine. */ | |
17211ab5 | 306 | static GTY((length ("fde_table_allocated"))) dw_fde_ref fde_table; |
a3f97cbb | 307 | |
3f76745e | 308 | /* Number of elements currently allocated for fde_table. */ |
c2e9147c | 309 | static GTY(()) unsigned fde_table_allocated; |
a94dbf2c | 310 | |
3f76745e | 311 | /* Number of elements in fde_table currently in use. */ |
044b4de3 | 312 | static GTY(()) unsigned fde_table_in_use; |
a3f97cbb | 313 | |
3f76745e JM |
314 | /* Size (in elements) of increments by which we may expand the |
315 | fde_table. */ | |
316 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 317 | |
a94dbf2c | 318 | /* A list of call frame insns for the CIE. */ |
17211ab5 | 319 | static GTY(()) dw_cfi_ref cie_cfi_head; |
a94dbf2c | 320 | |
c1b50e49 | 321 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) |
a3f97cbb JW |
322 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram |
323 | attribute that accelerates the lookup of the FDE associated | |
556273e0 | 324 | with the subprogram. This variable holds the table index of the FDE |
a3f97cbb JW |
325 | associated with the current function (body) definition. */ |
326 | static unsigned current_funcdef_fde; | |
c1b50e49 | 327 | #endif |
a3f97cbb | 328 | |
17211ab5 | 329 | struct indirect_string_node GTY(()) |
9eb4015a | 330 | { |
17211ab5 | 331 | const char *str; |
9eb4015a JJ |
332 | unsigned int refcount; |
333 | unsigned int form; | |
334 | char *label; | |
335 | }; | |
336 | ||
17211ab5 GK |
337 | static GTY ((param_is (struct indirect_string_node))) htab_t debug_str_hash; |
338 | ||
339 | static GTY(()) int dw2_string_counter; | |
044b4de3 | 340 | static GTY(()) unsigned long dwarf2out_cfi_label_num; |
17211ab5 GK |
341 | |
342 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
343 | ||
a3f97cbb | 344 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 345 | |
7080f735 AJ |
346 | static char *stripattributes (const char *); |
347 | static const char *dwarf_cfi_name (unsigned); | |
348 | static dw_cfi_ref new_cfi (void); | |
349 | static void add_cfi (dw_cfi_ref *, dw_cfi_ref); | |
350 | static void add_fde_cfi (const char *, dw_cfi_ref); | |
351 | static void lookup_cfa_1 (dw_cfi_ref, dw_cfa_location *); | |
352 | static void lookup_cfa (dw_cfa_location *); | |
353 | static void reg_save (const char *, unsigned, unsigned, long); | |
354 | static void initial_return_save (rtx); | |
355 | static long stack_adjust_offset (rtx); | |
356 | static void output_cfi (dw_cfi_ref, dw_fde_ref, int); | |
357 | static void output_call_frame_info (int); | |
358 | static void dwarf2out_stack_adjust (rtx); | |
359 | static void queue_reg_save (const char *, rtx, long); | |
360 | static void flush_queued_reg_saves (void); | |
361 | static bool clobbers_queued_reg_save (rtx); | |
362 | static void dwarf2out_frame_debug_expr (rtx, const char *); | |
a3f97cbb | 363 | |
7d9d8943 | 364 | /* Support for complex CFA locations. */ |
7080f735 AJ |
365 | static void output_cfa_loc (dw_cfi_ref); |
366 | static void get_cfa_from_loc_descr (dw_cfa_location *, | |
367 | struct dw_loc_descr_struct *); | |
7d9d8943 | 368 | static struct dw_loc_descr_struct *build_cfa_loc |
7080f735 AJ |
369 | (dw_cfa_location *); |
370 | static void def_cfa_1 (const char *, dw_cfa_location *); | |
7d9d8943 | 371 | |
2e4b9b8c RH |
372 | /* How to start an assembler comment. */ |
373 | #ifndef ASM_COMMENT_START | |
374 | #define ASM_COMMENT_START ";#" | |
a3f97cbb JW |
375 | #endif |
376 | ||
7e23cb16 JM |
377 | /* Data and reference forms for relocatable data. */ |
378 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
379 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
380 | ||
cf2fe500 RH |
381 | #ifndef DEBUG_FRAME_SECTION |
382 | #define DEBUG_FRAME_SECTION ".debug_frame" | |
a3f97cbb | 383 | #endif |
a3f97cbb | 384 | |
5c90448c JM |
385 | #ifndef FUNC_BEGIN_LABEL |
386 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 387 | #endif |
2ad9852d | 388 | |
5c90448c JM |
389 | #ifndef FUNC_END_LABEL |
390 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 391 | #endif |
2ad9852d | 392 | |
27d95cbe | 393 | #define FRAME_BEGIN_LABEL "Lframe" |
a6ab3aad JM |
394 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
395 | #define CIE_END_LABEL "LECIE" | |
2e4b9b8c RH |
396 | #define FDE_LABEL "LSFDE" |
397 | #define FDE_AFTER_SIZE_LABEL "LASFDE" | |
a6ab3aad | 398 | #define FDE_END_LABEL "LEFDE" |
981975b6 RH |
399 | #define LINE_NUMBER_BEGIN_LABEL "LSLT" |
400 | #define LINE_NUMBER_END_LABEL "LELT" | |
401 | #define LN_PROLOG_AS_LABEL "LASLTP" | |
402 | #define LN_PROLOG_END_LABEL "LELTP" | |
881c6935 | 403 | #define DIE_LABEL_PREFIX "DW" |
a3f97cbb | 404 | |
c8cc5c4a | 405 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
406 | is the column for PC, or the first column after all of the hard |
407 | registers. */ | |
c8cc5c4a | 408 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c | 409 | #ifdef PC_REGNUM |
7080f735 | 410 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) |
a94dbf2c | 411 | #else |
7080f735 | 412 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS |
a94dbf2c | 413 | #endif |
c8cc5c4a JM |
414 | #endif |
415 | ||
416 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 417 | default, we just provide columns for all registers. */ |
c8cc5c4a | 418 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 419 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 420 | #endif |
3f76745e | 421 | |
2ad9852d RK |
422 | /* The offset from the incoming value of %sp to the top of the stack frame |
423 | for the current function. */ | |
424 | #ifndef INCOMING_FRAME_SP_OFFSET | |
425 | #define INCOMING_FRAME_SP_OFFSET 0 | |
426 | #endif | |
427 | \f | |
0021b564 JM |
428 | /* Hook used by __throw. */ |
429 | ||
430 | rtx | |
7080f735 | 431 | expand_builtin_dwarf_sp_column (void) |
0021b564 | 432 | { |
9c80ff25 | 433 | return GEN_INT (DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)); |
0021b564 JM |
434 | } |
435 | ||
71dfc51f | 436 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 437 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
438 | |
439 | static inline char * | |
7080f735 | 440 | stripattributes (const char *s) |
a3f97cbb | 441 | { |
bf20f341 | 442 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
443 | char *p = stripped; |
444 | ||
bf20f341 JW |
445 | *p++ = '*'; |
446 | ||
447 | while (*s && *s != ',') | |
448 | *p++ = *s++; | |
71dfc51f | 449 | |
a3f97cbb JW |
450 | *p = '\0'; |
451 | return stripped; | |
452 | } | |
453 | ||
d9d5c9de | 454 | /* Generate code to initialize the register size table. */ |
2f3ca9e7 | 455 | |
d9d5c9de | 456 | void |
7080f735 | 457 | expand_builtin_init_dwarf_reg_sizes (tree address) |
2f3ca9e7 | 458 | { |
d9d5c9de BS |
459 | int i; |
460 | enum machine_mode mode = TYPE_MODE (char_type_node); | |
461 | rtx addr = expand_expr (address, NULL_RTX, VOIDmode, 0); | |
2ad9852d | 462 | rtx mem = gen_rtx_MEM (BLKmode, addr); |
71628aa0 | 463 | bool wrote_return_column = false; |
2f3ca9e7 | 464 | |
91ea38f9 JH |
465 | for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) |
466 | if (DWARF_FRAME_REGNUM (i) < DWARF_FRAME_REGISTERS) | |
467 | { | |
468 | HOST_WIDE_INT offset = DWARF_FRAME_REGNUM (i) * GET_MODE_SIZE (mode); | |
fee226d2 R |
469 | enum machine_mode save_mode = reg_raw_mode[i]; |
470 | HOST_WIDE_INT size; | |
2f3ca9e7 | 471 | |
fee226d2 R |
472 | if (HARD_REGNO_CALL_PART_CLOBBERED (i, save_mode)) |
473 | save_mode = choose_hard_reg_mode (i, 1, true); | |
71628aa0 R |
474 | if (DWARF_FRAME_REGNUM (i) == DWARF_FRAME_RETURN_COLUMN) |
475 | { | |
476 | if (save_mode == VOIDmode) | |
477 | continue; | |
478 | wrote_return_column = true; | |
479 | } | |
fee226d2 | 480 | size = GET_MODE_SIZE (save_mode); |
91ea38f9 JH |
481 | if (offset < 0) |
482 | continue; | |
c699cee9 | 483 | |
91ea38f9 JH |
484 | emit_move_insn (adjust_address (mem, mode, offset), GEN_INT (size)); |
485 | } | |
ed80cd68 RH |
486 | |
487 | #ifdef DWARF_ALT_FRAME_RETURN_COLUMN | |
488 | if (! wrote_return_column) | |
489 | abort (); | |
490 | i = DWARF_ALT_FRAME_RETURN_COLUMN; | |
491 | wrote_return_column = false; | |
492 | #else | |
493 | i = DWARF_FRAME_RETURN_COLUMN; | |
494 | #endif | |
495 | ||
71628aa0 R |
496 | if (! wrote_return_column) |
497 | { | |
498 | enum machine_mode save_mode = Pmode; | |
ed80cd68 | 499 | HOST_WIDE_INT offset = i * GET_MODE_SIZE (mode); |
71628aa0 R |
500 | HOST_WIDE_INT size = GET_MODE_SIZE (save_mode); |
501 | emit_move_insn (adjust_address (mem, mode, offset), GEN_INT (size)); | |
502 | } | |
2f3ca9e7 JM |
503 | } |
504 | ||
3f76745e | 505 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 506 | |
d560ee52 | 507 | static const char * |
7080f735 | 508 | dwarf_cfi_name (unsigned int cfi_opc) |
3f76745e JM |
509 | { |
510 | switch (cfi_opc) | |
511 | { | |
512 | case DW_CFA_advance_loc: | |
513 | return "DW_CFA_advance_loc"; | |
514 | case DW_CFA_offset: | |
515 | return "DW_CFA_offset"; | |
516 | case DW_CFA_restore: | |
517 | return "DW_CFA_restore"; | |
518 | case DW_CFA_nop: | |
519 | return "DW_CFA_nop"; | |
520 | case DW_CFA_set_loc: | |
521 | return "DW_CFA_set_loc"; | |
522 | case DW_CFA_advance_loc1: | |
523 | return "DW_CFA_advance_loc1"; | |
524 | case DW_CFA_advance_loc2: | |
525 | return "DW_CFA_advance_loc2"; | |
526 | case DW_CFA_advance_loc4: | |
527 | return "DW_CFA_advance_loc4"; | |
528 | case DW_CFA_offset_extended: | |
529 | return "DW_CFA_offset_extended"; | |
530 | case DW_CFA_restore_extended: | |
531 | return "DW_CFA_restore_extended"; | |
532 | case DW_CFA_undefined: | |
533 | return "DW_CFA_undefined"; | |
534 | case DW_CFA_same_value: | |
535 | return "DW_CFA_same_value"; | |
536 | case DW_CFA_register: | |
537 | return "DW_CFA_register"; | |
538 | case DW_CFA_remember_state: | |
539 | return "DW_CFA_remember_state"; | |
540 | case DW_CFA_restore_state: | |
541 | return "DW_CFA_restore_state"; | |
542 | case DW_CFA_def_cfa: | |
543 | return "DW_CFA_def_cfa"; | |
544 | case DW_CFA_def_cfa_register: | |
545 | return "DW_CFA_def_cfa_register"; | |
546 | case DW_CFA_def_cfa_offset: | |
547 | return "DW_CFA_def_cfa_offset"; | |
6bb28965 JM |
548 | |
549 | /* DWARF 3 */ | |
7d9d8943 AM |
550 | case DW_CFA_def_cfa_expression: |
551 | return "DW_CFA_def_cfa_expression"; | |
6bb28965 JM |
552 | case DW_CFA_expression: |
553 | return "DW_CFA_expression"; | |
554 | case DW_CFA_offset_extended_sf: | |
555 | return "DW_CFA_offset_extended_sf"; | |
556 | case DW_CFA_def_cfa_sf: | |
557 | return "DW_CFA_def_cfa_sf"; | |
558 | case DW_CFA_def_cfa_offset_sf: | |
559 | return "DW_CFA_def_cfa_offset_sf"; | |
c53aa195 | 560 | |
3f76745e JM |
561 | /* SGI/MIPS specific */ |
562 | case DW_CFA_MIPS_advance_loc8: | |
563 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
564 | |
565 | /* GNU extensions */ | |
566 | case DW_CFA_GNU_window_save: | |
567 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
568 | case DW_CFA_GNU_args_size: |
569 | return "DW_CFA_GNU_args_size"; | |
3f388b42 GK |
570 | case DW_CFA_GNU_negative_offset_extended: |
571 | return "DW_CFA_GNU_negative_offset_extended"; | |
c53aa195 | 572 | |
3f76745e JM |
573 | default: |
574 | return "DW_CFA_<unknown>"; | |
575 | } | |
576 | } | |
a3f97cbb | 577 | |
3f76745e | 578 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 579 | |
3f76745e | 580 | static inline dw_cfi_ref |
7080f735 | 581 | new_cfi (void) |
3f76745e | 582 | { |
703ad42b | 583 | dw_cfi_ref cfi = ggc_alloc (sizeof (dw_cfi_node)); |
71dfc51f | 584 | |
3f76745e JM |
585 | cfi->dw_cfi_next = NULL; |
586 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
587 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 588 | |
3f76745e JM |
589 | return cfi; |
590 | } | |
a3f97cbb | 591 | |
3f76745e | 592 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 593 | |
3f76745e | 594 | static inline void |
7080f735 | 595 | add_cfi (dw_cfi_ref *list_head, dw_cfi_ref cfi) |
3f76745e | 596 | { |
b3694847 | 597 | dw_cfi_ref *p; |
a3f97cbb | 598 | |
3f76745e JM |
599 | /* Find the end of the chain. */ |
600 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
601 | ; | |
602 | ||
603 | *p = cfi; | |
a3f97cbb JW |
604 | } |
605 | ||
3f76745e | 606 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 607 | |
c53aa195 | 608 | char * |
7080f735 | 609 | dwarf2out_cfi_label (void) |
a3f97cbb | 610 | { |
3f76745e | 611 | static char label[20]; |
556273e0 | 612 | |
044b4de3 | 613 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", dwarf2out_cfi_label_num++); |
3f76745e | 614 | ASM_OUTPUT_LABEL (asm_out_file, label); |
3f76745e | 615 | return label; |
a3f97cbb JW |
616 | } |
617 | ||
3f76745e JM |
618 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
619 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 620 | |
3f76745e | 621 | static void |
7080f735 | 622 | add_fde_cfi (const char *label, dw_cfi_ref cfi) |
a3f97cbb | 623 | { |
3f76745e JM |
624 | if (label) |
625 | { | |
b3694847 | 626 | dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
a3f97cbb | 627 | |
3f76745e JM |
628 | if (*label == 0) |
629 | label = dwarf2out_cfi_label (); | |
71dfc51f | 630 | |
3f76745e JM |
631 | if (fde->dw_fde_current_label == NULL |
632 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
633 | { | |
b3694847 | 634 | dw_cfi_ref xcfi; |
a3f97cbb | 635 | |
3f76745e | 636 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 637 | |
3f76745e JM |
638 | /* Set the location counter to the new label. */ |
639 | xcfi = new_cfi (); | |
640 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
641 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
642 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
643 | } | |
71dfc51f | 644 | |
3f76745e JM |
645 | add_cfi (&fde->dw_fde_cfi, cfi); |
646 | } | |
647 | ||
648 | else | |
649 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
650 | } |
651 | ||
3f76745e | 652 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 653 | |
3f76745e | 654 | static inline void |
7080f735 | 655 | lookup_cfa_1 (dw_cfi_ref cfi, dw_cfa_location *loc) |
a3f97cbb | 656 | { |
3f76745e JM |
657 | switch (cfi->dw_cfi_opc) |
658 | { | |
659 | case DW_CFA_def_cfa_offset: | |
7d9d8943 | 660 | loc->offset = cfi->dw_cfi_oprnd1.dw_cfi_offset; |
3f76745e JM |
661 | break; |
662 | case DW_CFA_def_cfa_register: | |
7d9d8943 | 663 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
3f76745e JM |
664 | break; |
665 | case DW_CFA_def_cfa: | |
7d9d8943 AM |
666 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
667 | loc->offset = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
668 | break; | |
669 | case DW_CFA_def_cfa_expression: | |
670 | get_cfa_from_loc_descr (loc, cfi->dw_cfi_oprnd1.dw_cfi_loc); | |
3f76745e | 671 | break; |
e9a25f70 JL |
672 | default: |
673 | break; | |
3f76745e | 674 | } |
a3f97cbb JW |
675 | } |
676 | ||
3f76745e | 677 | /* Find the previous value for the CFA. */ |
71dfc51f | 678 | |
3f76745e | 679 | static void |
7080f735 | 680 | lookup_cfa (dw_cfa_location *loc) |
a3f97cbb | 681 | { |
b3694847 | 682 | dw_cfi_ref cfi; |
3f76745e | 683 | |
7d9d8943 AM |
684 | loc->reg = (unsigned long) -1; |
685 | loc->offset = 0; | |
686 | loc->indirect = 0; | |
687 | loc->base_offset = 0; | |
3f76745e JM |
688 | |
689 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
7d9d8943 | 690 | lookup_cfa_1 (cfi, loc); |
3f76745e JM |
691 | |
692 | if (fde_table_in_use) | |
a3f97cbb | 693 | { |
b3694847 | 694 | dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
3f76745e | 695 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) |
7d9d8943 | 696 | lookup_cfa_1 (cfi, loc); |
a3f97cbb JW |
697 | } |
698 | } | |
699 | ||
3f76745e | 700 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
fbfa55b0 | 701 | static dw_cfa_location cfa; |
71dfc51f | 702 | |
3f76745e JM |
703 | /* The register used for saving registers to the stack, and its offset |
704 | from the CFA. */ | |
fbfa55b0 | 705 | static dw_cfa_location cfa_store; |
3f76745e | 706 | |
0021b564 JM |
707 | /* The running total of the size of arguments pushed onto the stack. */ |
708 | static long args_size; | |
709 | ||
b57d9225 JM |
710 | /* The last args_size we actually output. */ |
711 | static long old_args_size; | |
712 | ||
3f76745e JM |
713 | /* Entry point to update the canonical frame address (CFA). |
714 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
715 | calculated from REG+OFFSET. */ | |
716 | ||
717 | void | |
7080f735 | 718 | dwarf2out_def_cfa (const char *label, unsigned int reg, long int offset) |
7d9d8943 AM |
719 | { |
720 | dw_cfa_location loc; | |
721 | loc.indirect = 0; | |
722 | loc.base_offset = 0; | |
723 | loc.reg = reg; | |
724 | loc.offset = offset; | |
725 | def_cfa_1 (label, &loc); | |
726 | } | |
727 | ||
770ca8c6 | 728 | /* This routine does the actual work. The CFA is now calculated from |
7d9d8943 | 729 | the dw_cfa_location structure. */ |
2ad9852d | 730 | |
7d9d8943 | 731 | static void |
7080f735 | 732 | def_cfa_1 (const char *label, dw_cfa_location *loc_p) |
a3f97cbb | 733 | { |
b3694847 | 734 | dw_cfi_ref cfi; |
7d9d8943 | 735 | dw_cfa_location old_cfa, loc; |
3f76745e | 736 | |
7d9d8943 AM |
737 | cfa = *loc_p; |
738 | loc = *loc_p; | |
5bef9b1f | 739 | |
7d9d8943 AM |
740 | if (cfa_store.reg == loc.reg && loc.indirect == 0) |
741 | cfa_store.offset = loc.offset; | |
3f76745e | 742 | |
7d9d8943 AM |
743 | loc.reg = DWARF_FRAME_REGNUM (loc.reg); |
744 | lookup_cfa (&old_cfa); | |
745 | ||
2ad9852d RK |
746 | /* If nothing changed, no need to issue any call frame instructions. */ |
747 | if (loc.reg == old_cfa.reg && loc.offset == old_cfa.offset | |
748 | && loc.indirect == old_cfa.indirect | |
749 | && (loc.indirect == 0 || loc.base_offset == old_cfa.base_offset)) | |
750 | return; | |
3f76745e JM |
751 | |
752 | cfi = new_cfi (); | |
753 | ||
e09bbb25 | 754 | if (loc.reg == old_cfa.reg && !loc.indirect) |
a3f97cbb | 755 | { |
770ca8c6 JO |
756 | /* Construct a "DW_CFA_def_cfa_offset <offset>" instruction, |
757 | indicating the CFA register did not change but the offset | |
758 | did. */ | |
3f76745e | 759 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
7d9d8943 | 760 | cfi->dw_cfi_oprnd1.dw_cfi_offset = loc.offset; |
3f76745e | 761 | } |
a3f97cbb | 762 | |
3f76745e | 763 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
7d9d8943 | 764 | else if (loc.offset == old_cfa.offset && old_cfa.reg != (unsigned long) -1 |
e09bbb25 | 765 | && !loc.indirect) |
3f76745e | 766 | { |
770ca8c6 JO |
767 | /* Construct a "DW_CFA_def_cfa_register <register>" instruction, |
768 | indicating the CFA register has changed to <register> but the | |
769 | offset has not changed. */ | |
3f76745e | 770 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; |
7d9d8943 | 771 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
3f76745e JM |
772 | } |
773 | #endif | |
a3f97cbb | 774 | |
7d9d8943 | 775 | else if (loc.indirect == 0) |
3f76745e | 776 | { |
770ca8c6 JO |
777 | /* Construct a "DW_CFA_def_cfa <register> <offset>" instruction, |
778 | indicating the CFA register has changed to <register> with | |
779 | the specified offset. */ | |
3f76745e | 780 | cfi->dw_cfi_opc = DW_CFA_def_cfa; |
7d9d8943 AM |
781 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
782 | cfi->dw_cfi_oprnd2.dw_cfi_offset = loc.offset; | |
783 | } | |
784 | else | |
785 | { | |
770ca8c6 JO |
786 | /* Construct a DW_CFA_def_cfa_expression instruction to |
787 | calculate the CFA using a full location expression since no | |
788 | register-offset pair is available. */ | |
556273e0 | 789 | struct dw_loc_descr_struct *loc_list; |
2ad9852d | 790 | |
7d9d8943 AM |
791 | cfi->dw_cfi_opc = DW_CFA_def_cfa_expression; |
792 | loc_list = build_cfa_loc (&loc); | |
793 | cfi->dw_cfi_oprnd1.dw_cfi_loc = loc_list; | |
a3f97cbb | 794 | } |
3f76745e JM |
795 | |
796 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
797 | } |
798 | ||
3f76745e JM |
799 | /* Add the CFI for saving a register. REG is the CFA column number. |
800 | LABEL is passed to add_fde_cfi. | |
801 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
802 | otherwise it is saved in SREG. */ | |
71dfc51f | 803 | |
3f76745e | 804 | static void |
7080f735 | 805 | reg_save (const char *label, unsigned int reg, unsigned int sreg, long int offset) |
a3f97cbb | 806 | { |
b3694847 | 807 | dw_cfi_ref cfi = new_cfi (); |
3f76745e JM |
808 | |
809 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
810 | ||
85066503 MH |
811 | /* The following comparison is correct. -1 is used to indicate that |
812 | the value isn't a register number. */ | |
813 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 814 | { |
3f76745e JM |
815 | if (reg & ~0x3f) |
816 | /* The register number won't fit in 6 bits, so we have to use | |
817 | the long form. */ | |
818 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
819 | else | |
820 | cfi->dw_cfi_opc = DW_CFA_offset; | |
821 | ||
27c35f4b HPN |
822 | #ifdef ENABLE_CHECKING |
823 | { | |
824 | /* If we get an offset that is not a multiple of | |
825 | DWARF_CIE_DATA_ALIGNMENT, there is either a bug in the | |
826 | definition of DWARF_CIE_DATA_ALIGNMENT, or a bug in the machine | |
827 | description. */ | |
828 | long check_offset = offset / DWARF_CIE_DATA_ALIGNMENT; | |
829 | ||
830 | if (check_offset * DWARF_CIE_DATA_ALIGNMENT != offset) | |
831 | abort (); | |
832 | } | |
833 | #endif | |
3f76745e | 834 | offset /= DWARF_CIE_DATA_ALIGNMENT; |
3a88cbd1 | 835 | if (offset < 0) |
6bb28965 | 836 | cfi->dw_cfi_opc = DW_CFA_offset_extended_sf; |
2ad9852d | 837 | |
3f76745e JM |
838 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
839 | } | |
2c849145 JM |
840 | else if (sreg == reg) |
841 | /* We could emit a DW_CFA_same_value in this case, but don't bother. */ | |
842 | return; | |
3f76745e JM |
843 | else |
844 | { | |
845 | cfi->dw_cfi_opc = DW_CFA_register; | |
846 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
847 | } | |
848 | ||
849 | add_fde_cfi (label, cfi); | |
850 | } | |
851 | ||
c53aa195 JM |
852 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
853 | This CFI tells the unwinder that it needs to restore the window registers | |
854 | from the previous frame's window save area. | |
556273e0 | 855 | |
c53aa195 JM |
856 | ??? Perhaps we should note in the CIE where windows are saved (instead of |
857 | assuming 0(cfa)) and what registers are in the window. */ | |
858 | ||
859 | void | |
7080f735 | 860 | dwarf2out_window_save (const char *label) |
c53aa195 | 861 | { |
b3694847 | 862 | dw_cfi_ref cfi = new_cfi (); |
2ad9852d | 863 | |
c53aa195 JM |
864 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; |
865 | add_fde_cfi (label, cfi); | |
866 | } | |
867 | ||
0021b564 JM |
868 | /* Add a CFI to update the running total of the size of arguments |
869 | pushed onto the stack. */ | |
870 | ||
871 | void | |
7080f735 | 872 | dwarf2out_args_size (const char *label, long int size) |
0021b564 | 873 | { |
b3694847 | 874 | dw_cfi_ref cfi; |
b57d9225 JM |
875 | |
876 | if (size == old_args_size) | |
877 | return; | |
2ad9852d | 878 | |
b57d9225 JM |
879 | old_args_size = size; |
880 | ||
881 | cfi = new_cfi (); | |
0021b564 JM |
882 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
883 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
884 | add_fde_cfi (label, cfi); | |
885 | } | |
886 | ||
c53aa195 JM |
887 | /* Entry point for saving a register to the stack. REG is the GCC register |
888 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
889 | |
890 | void | |
7080f735 | 891 | dwarf2out_reg_save (const char *label, unsigned int reg, long int offset) |
3f76745e JM |
892 | { |
893 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
894 | } | |
895 | ||
c53aa195 JM |
896 | /* Entry point for saving the return address in the stack. |
897 | LABEL and OFFSET are passed to reg_save. */ | |
898 | ||
899 | void | |
7080f735 | 900 | dwarf2out_return_save (const char *label, long int offset) |
c53aa195 JM |
901 | { |
902 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
903 | } | |
904 | ||
905 | /* Entry point for saving the return address in a register. | |
906 | LABEL and SREG are passed to reg_save. */ | |
907 | ||
908 | void | |
7080f735 | 909 | dwarf2out_return_reg (const char *label, unsigned int sreg) |
c53aa195 JM |
910 | { |
911 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
912 | } | |
913 | ||
3f76745e JM |
914 | /* Record the initial position of the return address. RTL is |
915 | INCOMING_RETURN_ADDR_RTX. */ | |
916 | ||
917 | static void | |
7080f735 | 918 | initial_return_save (rtx rtl) |
3f76745e | 919 | { |
973838fd | 920 | unsigned int reg = (unsigned int) -1; |
2ad9852d | 921 | HOST_WIDE_INT offset = 0; |
3f76745e JM |
922 | |
923 | switch (GET_CODE (rtl)) | |
924 | { | |
925 | case REG: | |
926 | /* RA is in a register. */ | |
2c849145 | 927 | reg = DWARF_FRAME_REGNUM (REGNO (rtl)); |
3f76745e | 928 | break; |
2ad9852d | 929 | |
3f76745e JM |
930 | case MEM: |
931 | /* RA is on the stack. */ | |
932 | rtl = XEXP (rtl, 0); | |
933 | switch (GET_CODE (rtl)) | |
934 | { | |
935 | case REG: | |
3a88cbd1 JL |
936 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
937 | abort (); | |
3f76745e JM |
938 | offset = 0; |
939 | break; | |
2ad9852d | 940 | |
3f76745e | 941 | case PLUS: |
3a88cbd1 JL |
942 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
943 | abort (); | |
3f76745e JM |
944 | offset = INTVAL (XEXP (rtl, 1)); |
945 | break; | |
2ad9852d | 946 | |
3f76745e | 947 | case MINUS: |
3a88cbd1 JL |
948 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
949 | abort (); | |
3f76745e JM |
950 | offset = -INTVAL (XEXP (rtl, 1)); |
951 | break; | |
2ad9852d | 952 | |
3f76745e JM |
953 | default: |
954 | abort (); | |
955 | } | |
2ad9852d | 956 | |
3f76745e | 957 | break; |
2ad9852d | 958 | |
c53aa195 JM |
959 | case PLUS: |
960 | /* The return address is at some offset from any value we can | |
961 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
962 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
963 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
964 | abort (); | |
c53aa195 JM |
965 | initial_return_save (XEXP (rtl, 0)); |
966 | return; | |
2ad9852d | 967 | |
a3f97cbb | 968 | default: |
3f76745e | 969 | abort (); |
a3f97cbb | 970 | } |
3f76745e | 971 | |
7d9d8943 | 972 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa.offset); |
a3f97cbb JW |
973 | } |
974 | ||
1ba5ae8f | 975 | /* Given a SET, calculate the amount of stack adjustment it |
30f7a378 | 976 | contains. */ |
1ba5ae8f | 977 | |
5e640c56 | 978 | static long |
7080f735 | 979 | stack_adjust_offset (rtx pattern) |
1ba5ae8f AH |
980 | { |
981 | rtx src = SET_SRC (pattern); | |
982 | rtx dest = SET_DEST (pattern); | |
2ad9852d | 983 | HOST_WIDE_INT offset = 0; |
1ba5ae8f AH |
984 | enum rtx_code code; |
985 | ||
986 | if (dest == stack_pointer_rtx) | |
987 | { | |
988 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
989 | code = GET_CODE (src); | |
990 | if (! (code == PLUS || code == MINUS) | |
991 | || XEXP (src, 0) != stack_pointer_rtx | |
992 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
993 | return 0; | |
994 | ||
995 | offset = INTVAL (XEXP (src, 1)); | |
f472fa29 AM |
996 | if (code == PLUS) |
997 | offset = -offset; | |
1ba5ae8f AH |
998 | } |
999 | else if (GET_CODE (dest) == MEM) | |
1000 | { | |
1001 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1002 | src = XEXP (dest, 0); | |
1003 | code = GET_CODE (src); | |
1004 | ||
c26fbbca KH |
1005 | switch (code) |
1006 | { | |
f472fa29 AM |
1007 | case PRE_MODIFY: |
1008 | case POST_MODIFY: | |
1009 | if (XEXP (src, 0) == stack_pointer_rtx) | |
1010 | { | |
1011 | rtx val = XEXP (XEXP (src, 1), 1); | |
1012 | /* We handle only adjustments by constant amount. */ | |
1013 | if (GET_CODE (XEXP (src, 1)) != PLUS || | |
1014 | GET_CODE (val) != CONST_INT) | |
c26fbbca | 1015 | abort (); |
f472fa29 AM |
1016 | offset = -INTVAL (val); |
1017 | break; | |
1018 | } | |
1019 | return 0; | |
1020 | ||
1021 | case PRE_DEC: | |
1022 | case POST_DEC: | |
1023 | if (XEXP (src, 0) == stack_pointer_rtx) | |
1024 | { | |
1025 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1026 | break; | |
1027 | } | |
1028 | return 0; | |
1029 | ||
1030 | case PRE_INC: | |
1031 | case POST_INC: | |
1032 | if (XEXP (src, 0) == stack_pointer_rtx) | |
1033 | { | |
1034 | offset = -GET_MODE_SIZE (GET_MODE (dest)); | |
1035 | break; | |
1036 | } | |
1037 | return 0; | |
2ad9852d | 1038 | |
f472fa29 AM |
1039 | default: |
1040 | return 0; | |
e2134eea | 1041 | } |
1ba5ae8f AH |
1042 | } |
1043 | else | |
1044 | return 0; | |
1045 | ||
1ba5ae8f AH |
1046 | return offset; |
1047 | } | |
1048 | ||
0021b564 JM |
1049 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1050 | make a note of it if it does. EH uses this information to find out how | |
1051 | much extra space it needs to pop off the stack. */ | |
1052 | ||
1053 | static void | |
7080f735 | 1054 | dwarf2out_stack_adjust (rtx insn) |
0021b564 | 1055 | { |
2ad9852d | 1056 | HOST_WIDE_INT offset; |
d3e3972c | 1057 | const char *label; |
2ad9852d | 1058 | int i; |
0021b564 | 1059 | |
2ad9852d | 1060 | if (!flag_asynchronous_unwind_tables && GET_CODE (insn) == CALL_INSN) |
b57d9225 JM |
1061 | { |
1062 | /* Extract the size of the args from the CALL rtx itself. */ | |
b57d9225 JM |
1063 | insn = PATTERN (insn); |
1064 | if (GET_CODE (insn) == PARALLEL) | |
1065 | insn = XVECEXP (insn, 0, 0); | |
1066 | if (GET_CODE (insn) == SET) | |
1067 | insn = SET_SRC (insn); | |
3db35af4 MM |
1068 | if (GET_CODE (insn) != CALL) |
1069 | abort (); | |
2ad9852d | 1070 | |
b57d9225 JM |
1071 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); |
1072 | return; | |
1073 | } | |
1074 | ||
1075 | /* If only calls can throw, and we have a frame pointer, | |
1076 | save up adjustments until we see the CALL_INSN. */ | |
2ad9852d | 1077 | else if (!flag_asynchronous_unwind_tables && cfa.reg != STACK_POINTER_REGNUM) |
b57d9225 JM |
1078 | return; |
1079 | ||
6020d360 | 1080 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1081 | { |
6020d360 JM |
1082 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1083 | the compiler will have already emitted a stack adjustment, but | |
1084 | doesn't bother for calls to noreturn functions. */ | |
1085 | #ifdef STACK_GROWS_DOWNWARD | |
1086 | offset = -args_size; | |
1087 | #else | |
1088 | offset = args_size; | |
1089 | #endif | |
0021b564 | 1090 | } |
6020d360 | 1091 | else if (GET_CODE (PATTERN (insn)) == SET) |
2ad9852d | 1092 | offset = stack_adjust_offset (PATTERN (insn)); |
1ba5ae8f AH |
1093 | else if (GET_CODE (PATTERN (insn)) == PARALLEL |
1094 | || GET_CODE (PATTERN (insn)) == SEQUENCE) | |
1095 | { | |
1096 | /* There may be stack adjustments inside compound insns. Search | |
2ad9852d RK |
1097 | for them. */ |
1098 | for (offset = 0, i = XVECLEN (PATTERN (insn), 0) - 1; i >= 0; i--) | |
1099 | if (GET_CODE (XVECEXP (PATTERN (insn), 0, i)) == SET) | |
1100 | offset += stack_adjust_offset (XVECEXP (PATTERN (insn), 0, i)); | |
0021b564 JM |
1101 | } |
1102 | else | |
1103 | return; | |
0b34cf1e | 1104 | |
6020d360 JM |
1105 | if (offset == 0) |
1106 | return; | |
1107 | ||
7d9d8943 AM |
1108 | if (cfa.reg == STACK_POINTER_REGNUM) |
1109 | cfa.offset += offset; | |
0021b564 JM |
1110 | |
1111 | #ifndef STACK_GROWS_DOWNWARD | |
1112 | offset = -offset; | |
1113 | #endif | |
2ad9852d | 1114 | |
0021b564 JM |
1115 | args_size += offset; |
1116 | if (args_size < 0) | |
1117 | args_size = 0; | |
1118 | ||
1119 | label = dwarf2out_cfi_label (); | |
7d9d8943 | 1120 | def_cfa_1 (label, &cfa); |
0021b564 JM |
1121 | dwarf2out_args_size (label, args_size); |
1122 | } | |
1123 | ||
17211ab5 GK |
1124 | #endif |
1125 | ||
fbfa55b0 RH |
1126 | /* We delay emitting a register save until either (a) we reach the end |
1127 | of the prologue or (b) the register is clobbered. This clusters | |
1128 | register saves so that there are fewer pc advances. */ | |
1129 | ||
17211ab5 | 1130 | struct queued_reg_save GTY(()) |
fbfa55b0 RH |
1131 | { |
1132 | struct queued_reg_save *next; | |
1133 | rtx reg; | |
1134 | long cfa_offset; | |
1135 | }; | |
1136 | ||
17211ab5 GK |
1137 | static GTY(()) struct queued_reg_save *queued_reg_saves; |
1138 | ||
1139 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
fbfa55b0 RH |
1140 | static const char *last_reg_save_label; |
1141 | ||
1142 | static void | |
7080f735 | 1143 | queue_reg_save (const char *label, rtx reg, long int offset) |
fbfa55b0 | 1144 | { |
17211ab5 | 1145 | struct queued_reg_save *q = ggc_alloc (sizeof (*q)); |
fbfa55b0 RH |
1146 | |
1147 | q->next = queued_reg_saves; | |
1148 | q->reg = reg; | |
1149 | q->cfa_offset = offset; | |
1150 | queued_reg_saves = q; | |
1151 | ||
1152 | last_reg_save_label = label; | |
1153 | } | |
1154 | ||
1155 | static void | |
7080f735 | 1156 | flush_queued_reg_saves (void) |
fbfa55b0 RH |
1157 | { |
1158 | struct queued_reg_save *q, *next; | |
1159 | ||
c26fbbca | 1160 | for (q = queued_reg_saves; q; q = next) |
fbfa55b0 RH |
1161 | { |
1162 | dwarf2out_reg_save (last_reg_save_label, REGNO (q->reg), q->cfa_offset); | |
1163 | next = q->next; | |
fbfa55b0 RH |
1164 | } |
1165 | ||
1166 | queued_reg_saves = NULL; | |
1167 | last_reg_save_label = NULL; | |
1168 | } | |
1169 | ||
1170 | static bool | |
7080f735 | 1171 | clobbers_queued_reg_save (rtx insn) |
fbfa55b0 RH |
1172 | { |
1173 | struct queued_reg_save *q; | |
1174 | ||
c26fbbca | 1175 | for (q = queued_reg_saves; q; q = q->next) |
fbfa55b0 RH |
1176 | if (modified_in_p (q->reg, insn)) |
1177 | return true; | |
1178 | ||
1179 | return false; | |
1180 | } | |
c26fbbca | 1181 | |
fbfa55b0 | 1182 | |
770ca8c6 JO |
1183 | /* A temporary register holding an integral value used in adjusting SP |
1184 | or setting up the store_reg. The "offset" field holds the integer | |
1185 | value, not an offset. */ | |
fbfa55b0 | 1186 | static dw_cfa_location cfa_temp; |
770ca8c6 JO |
1187 | |
1188 | /* Record call frame debugging information for an expression EXPR, | |
1189 | which either sets SP or FP (adjusting how we calculate the frame | |
1190 | address) or saves a register to the stack. LABEL indicates the | |
1191 | address of EXPR. | |
1192 | ||
1193 | This function encodes a state machine mapping rtxes to actions on | |
1194 | cfa, cfa_store, and cfa_temp.reg. We describe these rules so | |
1195 | users need not read the source code. | |
1196 | ||
a401107d JO |
1197 | The High-Level Picture |
1198 | ||
1199 | Changes in the register we use to calculate the CFA: Currently we | |
1200 | assume that if you copy the CFA register into another register, we | |
1201 | should take the other one as the new CFA register; this seems to | |
1202 | work pretty well. If it's wrong for some target, it's simple | |
1203 | enough not to set RTX_FRAME_RELATED_P on the insn in question. | |
1204 | ||
1205 | Changes in the register we use for saving registers to the stack: | |
1206 | This is usually SP, but not always. Again, we deduce that if you | |
1207 | copy SP into another register (and SP is not the CFA register), | |
1208 | then the new register is the one we will be using for register | |
1209 | saves. This also seems to work. | |
1210 | ||
1211 | Register saves: There's not much guesswork about this one; if | |
1212 | RTX_FRAME_RELATED_P is set on an insn which modifies memory, it's a | |
1213 | register save, and the register used to calculate the destination | |
1214 | had better be the one we think we're using for this purpose. | |
1215 | ||
1216 | Except: If the register being saved is the CFA register, and the | |
cc2902df | 1217 | offset is nonzero, we are saving the CFA, so we assume we have to |
a401107d JO |
1218 | use DW_CFA_def_cfa_expression. If the offset is 0, we assume that |
1219 | the intent is to save the value of SP from the previous frame. | |
1220 | ||
770ca8c6 JO |
1221 | Invariants / Summaries of Rules |
1222 | ||
a401107d JO |
1223 | cfa current rule for calculating the CFA. It usually |
1224 | consists of a register and an offset. | |
770ca8c6 JO |
1225 | cfa_store register used by prologue code to save things to the stack |
1226 | cfa_store.offset is the offset from the value of | |
1227 | cfa_store.reg to the actual CFA | |
1228 | cfa_temp register holding an integral value. cfa_temp.offset | |
1229 | stores the value, which will be used to adjust the | |
19ec6a36 AM |
1230 | stack pointer. cfa_temp is also used like cfa_store, |
1231 | to track stores to the stack via fp or a temp reg. | |
c26fbbca | 1232 | |
770ca8c6 | 1233 | Rules 1- 4: Setting a register's value to cfa.reg or an expression |
7080f735 | 1234 | with cfa.reg as the first operand changes the cfa.reg and its |
19ec6a36 AM |
1235 | cfa.offset. Rule 1 and 4 also set cfa_temp.reg and |
1236 | cfa_temp.offset. | |
770ca8c6 JO |
1237 | |
1238 | Rules 6- 9: Set a non-cfa.reg register value to a constant or an | |
1239 | expression yielding a constant. This sets cfa_temp.reg | |
1240 | and cfa_temp.offset. | |
1241 | ||
1242 | Rule 5: Create a new register cfa_store used to save items to the | |
1243 | stack. | |
1244 | ||
19ec6a36 | 1245 | Rules 10-14: Save a register to the stack. Define offset as the |
a401107d | 1246 | difference of the original location and cfa_store's |
19ec6a36 | 1247 | location (or cfa_temp's location if cfa_temp is used). |
770ca8c6 JO |
1248 | |
1249 | The Rules | |
1250 | ||
1251 | "{a,b}" indicates a choice of a xor b. | |
1252 | "<reg>:cfa.reg" indicates that <reg> must equal cfa.reg. | |
1253 | ||
1254 | Rule 1: | |
1255 | (set <reg1> <reg2>:cfa.reg) | |
19ec6a36 | 1256 | effects: cfa.reg = <reg1> |
73c68f61 | 1257 | cfa.offset unchanged |
19ec6a36 AM |
1258 | cfa_temp.reg = <reg1> |
1259 | cfa_temp.offset = cfa.offset | |
770ca8c6 JO |
1260 | |
1261 | Rule 2: | |
2ad9852d RK |
1262 | (set sp ({minus,plus,losum} {sp,fp}:cfa.reg |
1263 | {<const_int>,<reg>:cfa_temp.reg})) | |
770ca8c6 | 1264 | effects: cfa.reg = sp if fp used |
7080f735 | 1265 | cfa.offset += {+/- <const_int>, cfa_temp.offset} if cfa.reg==sp |
770ca8c6 JO |
1266 | cfa_store.offset += {+/- <const_int>, cfa_temp.offset} |
1267 | if cfa_store.reg==sp | |
1268 | ||
1269 | Rule 3: | |
19ec6a36 | 1270 | (set fp ({minus,plus,losum} <reg>:cfa.reg <const_int>)) |
770ca8c6 | 1271 | effects: cfa.reg = fp |
7080f735 | 1272 | cfa_offset += +/- <const_int> |
770ca8c6 JO |
1273 | |
1274 | Rule 4: | |
19ec6a36 | 1275 | (set <reg1> ({plus,losum} <reg2>:cfa.reg <const_int>)) |
770ca8c6 | 1276 | constraints: <reg1> != fp |
7080f735 | 1277 | <reg1> != sp |
770ca8c6 | 1278 | effects: cfa.reg = <reg1> |
19ec6a36 AM |
1279 | cfa_temp.reg = <reg1> |
1280 | cfa_temp.offset = cfa.offset | |
770ca8c6 JO |
1281 | |
1282 | Rule 5: | |
1283 | (set <reg1> (plus <reg2>:cfa_temp.reg sp:cfa.reg)) | |
1284 | constraints: <reg1> != fp | |
7080f735 | 1285 | <reg1> != sp |
770ca8c6 | 1286 | effects: cfa_store.reg = <reg1> |
7080f735 | 1287 | cfa_store.offset = cfa.offset - cfa_temp.offset |
770ca8c6 JO |
1288 | |
1289 | Rule 6: | |
1290 | (set <reg> <const_int>) | |
1291 | effects: cfa_temp.reg = <reg> | |
7080f735 | 1292 | cfa_temp.offset = <const_int> |
770ca8c6 JO |
1293 | |
1294 | Rule 7: | |
1295 | (set <reg1>:cfa_temp.reg (ior <reg2>:cfa_temp.reg <const_int>)) | |
1296 | effects: cfa_temp.reg = <reg1> | |
1297 | cfa_temp.offset |= <const_int> | |
1298 | ||
1299 | Rule 8: | |
1300 | (set <reg> (high <exp>)) | |
1301 | effects: none | |
1302 | ||
1303 | Rule 9: | |
1304 | (set <reg> (lo_sum <exp> <const_int>)) | |
1305 | effects: cfa_temp.reg = <reg> | |
7080f735 | 1306 | cfa_temp.offset = <const_int> |
770ca8c6 JO |
1307 | |
1308 | Rule 10: | |
1309 | (set (mem (pre_modify sp:cfa_store (???? <reg1> <const_int>))) <reg2>) | |
1310 | effects: cfa_store.offset -= <const_int> | |
1311 | cfa.offset = cfa_store.offset if cfa.reg == sp | |
770ca8c6 | 1312 | cfa.reg = sp |
19ec6a36 | 1313 | cfa.base_offset = -cfa_store.offset |
770ca8c6 JO |
1314 | |
1315 | Rule 11: | |
1316 | (set (mem ({pre_inc,pre_dec} sp:cfa_store.reg)) <reg>) | |
1317 | effects: cfa_store.offset += -/+ mode_size(mem) | |
1318 | cfa.offset = cfa_store.offset if cfa.reg == sp | |
770ca8c6 | 1319 | cfa.reg = sp |
19ec6a36 | 1320 | cfa.base_offset = -cfa_store.offset |
770ca8c6 JO |
1321 | |
1322 | Rule 12: | |
2ad9852d RK |
1323 | (set (mem ({minus,plus,losum} <reg1>:{cfa_store,cfa_temp} <const_int>)) |
1324 | ||
1325 | <reg2>) | |
19ec6a36 AM |
1326 | effects: cfa.reg = <reg1> |
1327 | cfa.base_offset = -/+ <const_int> - {cfa_store,cfa_temp}.offset | |
770ca8c6 JO |
1328 | |
1329 | Rule 13: | |
19ec6a36 AM |
1330 | (set (mem <reg1>:{cfa_store,cfa_temp}) <reg2>) |
1331 | effects: cfa.reg = <reg1> | |
1332 | cfa.base_offset = -{cfa_store,cfa_temp}.offset | |
1333 | ||
1334 | Rule 14: | |
1335 | (set (mem (postinc <reg1>:cfa_temp <const_int>)) <reg2>) | |
1336 | effects: cfa.reg = <reg1> | |
1337 | cfa.base_offset = -cfa_temp.offset | |
1338 | cfa_temp.offset -= mode_size(mem) */ | |
b664de3a AM |
1339 | |
1340 | static void | |
7080f735 | 1341 | dwarf2out_frame_debug_expr (rtx expr, const char *label) |
b664de3a AM |
1342 | { |
1343 | rtx src, dest; | |
2ad9852d | 1344 | HOST_WIDE_INT offset; |
556273e0 KH |
1345 | |
1346 | /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of | |
1347 | the PARALLEL independently. The first element is always processed if | |
770ca8c6 | 1348 | it is a SET. This is for backward compatibility. Other elements |
556273e0 KH |
1349 | are processed only if they are SETs and the RTX_FRAME_RELATED_P |
1350 | flag is set in them. */ | |
2ad9852d | 1351 | if (GET_CODE (expr) == PARALLEL || GET_CODE (expr) == SEQUENCE) |
556273e0 | 1352 | { |
b664de3a AM |
1353 | int par_index; |
1354 | int limit = XVECLEN (expr, 0); | |
1355 | ||
1356 | for (par_index = 0; par_index < limit; par_index++) | |
2ad9852d RK |
1357 | if (GET_CODE (XVECEXP (expr, 0, par_index)) == SET |
1358 | && (RTX_FRAME_RELATED_P (XVECEXP (expr, 0, par_index)) | |
1359 | || par_index == 0)) | |
1360 | dwarf2out_frame_debug_expr (XVECEXP (expr, 0, par_index), label); | |
556273e0 | 1361 | |
b664de3a AM |
1362 | return; |
1363 | } | |
556273e0 | 1364 | |
b664de3a AM |
1365 | if (GET_CODE (expr) != SET) |
1366 | abort (); | |
1367 | ||
1368 | src = SET_SRC (expr); | |
1369 | dest = SET_DEST (expr); | |
1370 | ||
1371 | switch (GET_CODE (dest)) | |
1372 | { | |
1373 | case REG: | |
770ca8c6 | 1374 | /* Rule 1 */ |
b664de3a | 1375 | /* Update the CFA rule wrt SP or FP. Make sure src is |
73c68f61 | 1376 | relative to the current CFA register. */ |
b664de3a | 1377 | switch (GET_CODE (src)) |
556273e0 KH |
1378 | { |
1379 | /* Setting FP from SP. */ | |
1380 | case REG: | |
1381 | if (cfa.reg == (unsigned) REGNO (src)) | |
1382 | /* OK. */ | |
1383 | ; | |
626d1efd | 1384 | else |
556273e0 | 1385 | abort (); |
2c849145 JM |
1386 | |
1387 | /* We used to require that dest be either SP or FP, but the | |
1388 | ARM copies SP to a temporary register, and from there to | |
1389 | FP. So we just rely on the backends to only set | |
1390 | RTX_FRAME_RELATED_P on appropriate insns. */ | |
556273e0 | 1391 | cfa.reg = REGNO (dest); |
19ec6a36 AM |
1392 | cfa_temp.reg = cfa.reg; |
1393 | cfa_temp.offset = cfa.offset; | |
556273e0 | 1394 | break; |
b664de3a | 1395 | |
556273e0 KH |
1396 | case PLUS: |
1397 | case MINUS: | |
19ec6a36 | 1398 | case LO_SUM: |
556273e0 KH |
1399 | if (dest == stack_pointer_rtx) |
1400 | { | |
770ca8c6 | 1401 | /* Rule 2 */ |
2618f955 MM |
1402 | /* Adjusting SP. */ |
1403 | switch (GET_CODE (XEXP (src, 1))) | |
1404 | { | |
1405 | case CONST_INT: | |
1406 | offset = INTVAL (XEXP (src, 1)); | |
1407 | break; | |
1408 | case REG: | |
770ca8c6 | 1409 | if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp.reg) |
2618f955 | 1410 | abort (); |
770ca8c6 | 1411 | offset = cfa_temp.offset; |
2618f955 MM |
1412 | break; |
1413 | default: | |
1414 | abort (); | |
1415 | } | |
1416 | ||
1417 | if (XEXP (src, 0) == hard_frame_pointer_rtx) | |
1418 | { | |
1419 | /* Restoring SP from FP in the epilogue. */ | |
7d9d8943 | 1420 | if (cfa.reg != (unsigned) HARD_FRAME_POINTER_REGNUM) |
2618f955 | 1421 | abort (); |
7d9d8943 | 1422 | cfa.reg = STACK_POINTER_REGNUM; |
2618f955 | 1423 | } |
19ec6a36 AM |
1424 | else if (GET_CODE (src) == LO_SUM) |
1425 | /* Assume we've set the source reg of the LO_SUM from sp. */ | |
1426 | ; | |
2618f955 MM |
1427 | else if (XEXP (src, 0) != stack_pointer_rtx) |
1428 | abort (); | |
1429 | ||
19ec6a36 | 1430 | if (GET_CODE (src) != MINUS) |
2618f955 | 1431 | offset = -offset; |
7d9d8943 AM |
1432 | if (cfa.reg == STACK_POINTER_REGNUM) |
1433 | cfa.offset += offset; | |
1434 | if (cfa_store.reg == STACK_POINTER_REGNUM) | |
1435 | cfa_store.offset += offset; | |
556273e0 KH |
1436 | } |
1437 | else if (dest == hard_frame_pointer_rtx) | |
1438 | { | |
770ca8c6 | 1439 | /* Rule 3 */ |
2618f955 MM |
1440 | /* Either setting the FP from an offset of the SP, |
1441 | or adjusting the FP */ | |
2c849145 | 1442 | if (! frame_pointer_needed) |
2618f955 MM |
1443 | abort (); |
1444 | ||
2c849145 | 1445 | if (GET_CODE (XEXP (src, 0)) == REG |
7d9d8943 | 1446 | && (unsigned) REGNO (XEXP (src, 0)) == cfa.reg |
2618f955 MM |
1447 | && GET_CODE (XEXP (src, 1)) == CONST_INT) |
1448 | { | |
2618f955 | 1449 | offset = INTVAL (XEXP (src, 1)); |
19ec6a36 | 1450 | if (GET_CODE (src) != MINUS) |
2618f955 | 1451 | offset = -offset; |
7d9d8943 AM |
1452 | cfa.offset += offset; |
1453 | cfa.reg = HARD_FRAME_POINTER_REGNUM; | |
2618f955 | 1454 | } |
556273e0 KH |
1455 | else |
1456 | abort (); | |
1457 | } | |
1458 | else | |
1459 | { | |
19ec6a36 | 1460 | if (GET_CODE (src) == MINUS) |
2618f955 | 1461 | abort (); |
b53ef1a2 | 1462 | |
770ca8c6 | 1463 | /* Rule 4 */ |
b53ef1a2 NC |
1464 | if (GET_CODE (XEXP (src, 0)) == REG |
1465 | && REGNO (XEXP (src, 0)) == cfa.reg | |
1466 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
34ce3d7b JM |
1467 | { |
1468 | /* Setting a temporary CFA register that will be copied | |
1469 | into the FP later on. */ | |
19ec6a36 | 1470 | offset = - INTVAL (XEXP (src, 1)); |
34ce3d7b JM |
1471 | cfa.offset += offset; |
1472 | cfa.reg = REGNO (dest); | |
19ec6a36 AM |
1473 | /* Or used to save regs to the stack. */ |
1474 | cfa_temp.reg = cfa.reg; | |
1475 | cfa_temp.offset = cfa.offset; | |
34ce3d7b | 1476 | } |
2ad9852d | 1477 | |
770ca8c6 | 1478 | /* Rule 5 */ |
19ec6a36 AM |
1479 | else if (GET_CODE (XEXP (src, 0)) == REG |
1480 | && REGNO (XEXP (src, 0)) == cfa_temp.reg | |
1481 | && XEXP (src, 1) == stack_pointer_rtx) | |
b53ef1a2 | 1482 | { |
00a42e21 JM |
1483 | /* Setting a scratch register that we will use instead |
1484 | of SP for saving registers to the stack. */ | |
b53ef1a2 NC |
1485 | if (cfa.reg != STACK_POINTER_REGNUM) |
1486 | abort (); | |
1487 | cfa_store.reg = REGNO (dest); | |
770ca8c6 | 1488 | cfa_store.offset = cfa.offset - cfa_temp.offset; |
b53ef1a2 | 1489 | } |
2ad9852d | 1490 | |
19ec6a36 AM |
1491 | /* Rule 9 */ |
1492 | else if (GET_CODE (src) == LO_SUM | |
1493 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1494 | { | |
1495 | cfa_temp.reg = REGNO (dest); | |
1496 | cfa_temp.offset = INTVAL (XEXP (src, 1)); | |
1497 | } | |
1498 | else | |
1499 | abort (); | |
556273e0 KH |
1500 | } |
1501 | break; | |
b664de3a | 1502 | |
770ca8c6 | 1503 | /* Rule 6 */ |
556273e0 | 1504 | case CONST_INT: |
770ca8c6 JO |
1505 | cfa_temp.reg = REGNO (dest); |
1506 | cfa_temp.offset = INTVAL (src); | |
556273e0 | 1507 | break; |
b664de3a | 1508 | |
770ca8c6 | 1509 | /* Rule 7 */ |
556273e0 KH |
1510 | case IOR: |
1511 | if (GET_CODE (XEXP (src, 0)) != REG | |
770ca8c6 | 1512 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp.reg |
2618f955 | 1513 | || GET_CODE (XEXP (src, 1)) != CONST_INT) |
556273e0 | 1514 | abort (); |
2ad9852d | 1515 | |
770ca8c6 JO |
1516 | if ((unsigned) REGNO (dest) != cfa_temp.reg) |
1517 | cfa_temp.reg = REGNO (dest); | |
1518 | cfa_temp.offset |= INTVAL (XEXP (src, 1)); | |
556273e0 | 1519 | break; |
b664de3a | 1520 | |
9ae21d2a AM |
1521 | /* Skip over HIGH, assuming it will be followed by a LO_SUM, |
1522 | which will fill in all of the bits. */ | |
1523 | /* Rule 8 */ | |
1524 | case HIGH: | |
1525 | break; | |
1526 | ||
556273e0 KH |
1527 | default: |
1528 | abort (); | |
1529 | } | |
2ad9852d | 1530 | |
7d9d8943 | 1531 | def_cfa_1 (label, &cfa); |
2618f955 | 1532 | break; |
b664de3a | 1533 | |
2618f955 | 1534 | case MEM: |
2618f955 MM |
1535 | if (GET_CODE (src) != REG) |
1536 | abort (); | |
7d9d8943 | 1537 | |
7d9d8943 AM |
1538 | /* Saving a register to the stack. Make sure dest is relative to the |
1539 | CFA register. */ | |
2618f955 MM |
1540 | switch (GET_CODE (XEXP (dest, 0))) |
1541 | { | |
770ca8c6 | 1542 | /* Rule 10 */ |
2618f955 | 1543 | /* With a push. */ |
e2134eea JH |
1544 | case PRE_MODIFY: |
1545 | /* We can't handle variable size modifications. */ | |
1546 | if (GET_CODE (XEXP (XEXP (XEXP (dest, 0), 1), 1)) != CONST_INT) | |
173bf5be | 1547 | abort (); |
e2134eea JH |
1548 | offset = -INTVAL (XEXP (XEXP (XEXP (dest, 0), 1), 1)); |
1549 | ||
1550 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM | |
1551 | || cfa_store.reg != STACK_POINTER_REGNUM) | |
1552 | abort (); | |
2ad9852d | 1553 | |
e2134eea JH |
1554 | cfa_store.offset += offset; |
1555 | if (cfa.reg == STACK_POINTER_REGNUM) | |
1556 | cfa.offset = cfa_store.offset; | |
1557 | ||
1558 | offset = -cfa_store.offset; | |
1559 | break; | |
2ad9852d | 1560 | |
770ca8c6 | 1561 | /* Rule 11 */ |
2618f955 MM |
1562 | case PRE_INC: |
1563 | case PRE_DEC: | |
1564 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1565 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) | |
1566 | offset = -offset; | |
b664de3a | 1567 | |
2618f955 | 1568 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
7d9d8943 | 1569 | || cfa_store.reg != STACK_POINTER_REGNUM) |
2618f955 | 1570 | abort (); |
2ad9852d | 1571 | |
7d9d8943 AM |
1572 | cfa_store.offset += offset; |
1573 | if (cfa.reg == STACK_POINTER_REGNUM) | |
1574 | cfa.offset = cfa_store.offset; | |
b664de3a | 1575 | |
7d9d8943 | 1576 | offset = -cfa_store.offset; |
2618f955 | 1577 | break; |
b664de3a | 1578 | |
770ca8c6 | 1579 | /* Rule 12 */ |
2618f955 MM |
1580 | /* With an offset. */ |
1581 | case PLUS: | |
1582 | case MINUS: | |
19ec6a36 | 1583 | case LO_SUM: |
770ca8c6 JO |
1584 | if (GET_CODE (XEXP (XEXP (dest, 0), 1)) != CONST_INT) |
1585 | abort (); | |
2618f955 MM |
1586 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); |
1587 | if (GET_CODE (XEXP (dest, 0)) == MINUS) | |
1588 | offset = -offset; | |
b664de3a | 1589 | |
19ec6a36 AM |
1590 | if (cfa_store.reg == (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) |
1591 | offset -= cfa_store.offset; | |
1592 | else if (cfa_temp.reg == (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) | |
1593 | offset -= cfa_temp.offset; | |
1594 | else | |
2618f955 | 1595 | abort (); |
2618f955 MM |
1596 | break; |
1597 | ||
770ca8c6 | 1598 | /* Rule 13 */ |
2618f955 MM |
1599 | /* Without an offset. */ |
1600 | case REG: | |
19ec6a36 AM |
1601 | if (cfa_store.reg == (unsigned) REGNO (XEXP (dest, 0))) |
1602 | offset = -cfa_store.offset; | |
1603 | else if (cfa_temp.reg == (unsigned) REGNO (XEXP (dest, 0))) | |
1604 | offset = -cfa_temp.offset; | |
1605 | else | |
556273e0 | 1606 | abort (); |
19ec6a36 AM |
1607 | break; |
1608 | ||
1609 | /* Rule 14 */ | |
1610 | case POST_INC: | |
1611 | if (cfa_temp.reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) | |
1612 | abort (); | |
1613 | offset = -cfa_temp.offset; | |
1614 | cfa_temp.offset -= GET_MODE_SIZE (GET_MODE (dest)); | |
2618f955 MM |
1615 | break; |
1616 | ||
1617 | default: | |
1618 | abort (); | |
1619 | } | |
e09bbb25 | 1620 | |
556273e0 | 1621 | if (REGNO (src) != STACK_POINTER_REGNUM |
e09bbb25 JM |
1622 | && REGNO (src) != HARD_FRAME_POINTER_REGNUM |
1623 | && (unsigned) REGNO (src) == cfa.reg) | |
1624 | { | |
1625 | /* We're storing the current CFA reg into the stack. */ | |
1626 | ||
1627 | if (cfa.offset == 0) | |
1628 | { | |
1629 | /* If the source register is exactly the CFA, assume | |
1630 | we're saving SP like any other register; this happens | |
1631 | on the ARM. */ | |
e09bbb25 | 1632 | def_cfa_1 (label, &cfa); |
fbfa55b0 | 1633 | queue_reg_save (label, stack_pointer_rtx, offset); |
e09bbb25 JM |
1634 | break; |
1635 | } | |
1636 | else | |
1637 | { | |
1638 | /* Otherwise, we'll need to look in the stack to | |
73c68f61 | 1639 | calculate the CFA. */ |
e09bbb25 | 1640 | rtx x = XEXP (dest, 0); |
2ad9852d | 1641 | |
e09bbb25 JM |
1642 | if (GET_CODE (x) != REG) |
1643 | x = XEXP (x, 0); | |
1644 | if (GET_CODE (x) != REG) | |
1645 | abort (); | |
2ad9852d RK |
1646 | |
1647 | cfa.reg = REGNO (x); | |
e09bbb25 JM |
1648 | cfa.base_offset = offset; |
1649 | cfa.indirect = 1; | |
1650 | def_cfa_1 (label, &cfa); | |
1651 | break; | |
1652 | } | |
1653 | } | |
1654 | ||
7d9d8943 | 1655 | def_cfa_1 (label, &cfa); |
fbfa55b0 | 1656 | queue_reg_save (label, src, offset); |
2618f955 MM |
1657 | break; |
1658 | ||
1659 | default: | |
1660 | abort (); | |
1661 | } | |
b664de3a AM |
1662 | } |
1663 | ||
3f76745e JM |
1664 | /* Record call frame debugging information for INSN, which either |
1665 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1666 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1667 | |
3f76745e | 1668 | void |
7080f735 | 1669 | dwarf2out_frame_debug (rtx insn) |
a3f97cbb | 1670 | { |
d3e3972c | 1671 | const char *label; |
b664de3a | 1672 | rtx src; |
3f76745e JM |
1673 | |
1674 | if (insn == NULL_RTX) | |
a3f97cbb | 1675 | { |
fbfa55b0 RH |
1676 | /* Flush any queued register saves. */ |
1677 | flush_queued_reg_saves (); | |
1678 | ||
3f76745e | 1679 | /* Set up state for generating call frame debug info. */ |
7d9d8943 AM |
1680 | lookup_cfa (&cfa); |
1681 | if (cfa.reg != (unsigned long) DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) | |
3a88cbd1 | 1682 | abort (); |
2ad9852d | 1683 | |
7d9d8943 AM |
1684 | cfa.reg = STACK_POINTER_REGNUM; |
1685 | cfa_store = cfa; | |
770ca8c6 JO |
1686 | cfa_temp.reg = -1; |
1687 | cfa_temp.offset = 0; | |
3f76745e JM |
1688 | return; |
1689 | } | |
1690 | ||
fbfa55b0 RH |
1691 | if (GET_CODE (insn) != INSN || clobbers_queued_reg_save (insn)) |
1692 | flush_queued_reg_saves (); | |
1693 | ||
0021b564 JM |
1694 | if (! RTX_FRAME_RELATED_P (insn)) |
1695 | { | |
fbfa55b0 | 1696 | if (!ACCUMULATE_OUTGOING_ARGS) |
c26fbbca | 1697 | dwarf2out_stack_adjust (insn); |
2ad9852d | 1698 | |
0021b564 JM |
1699 | return; |
1700 | } | |
1701 | ||
3f76745e | 1702 | label = dwarf2out_cfi_label (); |
07ebc930 RH |
1703 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1704 | if (src) | |
1705 | insn = XEXP (src, 0); | |
556273e0 | 1706 | else |
07ebc930 RH |
1707 | insn = PATTERN (insn); |
1708 | ||
b664de3a | 1709 | dwarf2out_frame_debug_expr (insn, label); |
3f76745e JM |
1710 | } |
1711 | ||
17211ab5 GK |
1712 | #endif |
1713 | ||
1714 | /* Describe for the GTY machinery what parts of dw_cfi_oprnd1 are used. */ | |
7080f735 AJ |
1715 | static enum dw_cfi_oprnd_type dw_cfi_oprnd1_desc |
1716 | (enum dwarf_call_frame_info cfi); | |
17211ab5 GK |
1717 | |
1718 | static enum dw_cfi_oprnd_type | |
7080f735 | 1719 | dw_cfi_oprnd1_desc (enum dwarf_call_frame_info cfi) |
17211ab5 GK |
1720 | { |
1721 | switch (cfi) | |
1722 | { | |
1723 | case DW_CFA_nop: | |
1724 | case DW_CFA_GNU_window_save: | |
1725 | return dw_cfi_oprnd_unused; | |
1726 | ||
1727 | case DW_CFA_set_loc: | |
1728 | case DW_CFA_advance_loc1: | |
1729 | case DW_CFA_advance_loc2: | |
1730 | case DW_CFA_advance_loc4: | |
1731 | case DW_CFA_MIPS_advance_loc8: | |
1732 | return dw_cfi_oprnd_addr; | |
1733 | ||
1734 | case DW_CFA_offset: | |
1735 | case DW_CFA_offset_extended: | |
1736 | case DW_CFA_def_cfa: | |
1737 | case DW_CFA_offset_extended_sf: | |
1738 | case DW_CFA_def_cfa_sf: | |
1739 | case DW_CFA_restore_extended: | |
1740 | case DW_CFA_undefined: | |
1741 | case DW_CFA_same_value: | |
1742 | case DW_CFA_def_cfa_register: | |
1743 | case DW_CFA_register: | |
1744 | return dw_cfi_oprnd_reg_num; | |
1745 | ||
1746 | case DW_CFA_def_cfa_offset: | |
1747 | case DW_CFA_GNU_args_size: | |
1748 | case DW_CFA_def_cfa_offset_sf: | |
1749 | return dw_cfi_oprnd_offset; | |
7080f735 | 1750 | |
17211ab5 GK |
1751 | case DW_CFA_def_cfa_expression: |
1752 | case DW_CFA_expression: | |
1753 | return dw_cfi_oprnd_loc; | |
1754 | ||
1755 | default: | |
1756 | abort (); | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | /* Describe for the GTY machinery what parts of dw_cfi_oprnd2 are used. */ | |
7080f735 AJ |
1761 | static enum dw_cfi_oprnd_type dw_cfi_oprnd2_desc |
1762 | (enum dwarf_call_frame_info cfi); | |
17211ab5 GK |
1763 | |
1764 | static enum dw_cfi_oprnd_type | |
7080f735 | 1765 | dw_cfi_oprnd2_desc (enum dwarf_call_frame_info cfi) |
17211ab5 GK |
1766 | { |
1767 | switch (cfi) | |
1768 | { | |
1769 | case DW_CFA_def_cfa: | |
1770 | case DW_CFA_def_cfa_sf: | |
1771 | case DW_CFA_offset: | |
1772 | case DW_CFA_offset_extended_sf: | |
1773 | case DW_CFA_offset_extended: | |
1774 | return dw_cfi_oprnd_offset; | |
1775 | ||
1776 | case DW_CFA_register: | |
1777 | return dw_cfi_oprnd_reg_num; | |
1778 | ||
1779 | default: | |
1780 | return dw_cfi_oprnd_unused; | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
1785 | ||
3f76745e JM |
1786 | /* Output a Call Frame Information opcode and its operand(s). */ |
1787 | ||
1788 | static void | |
7080f735 | 1789 | output_cfi (dw_cfi_ref cfi, dw_fde_ref fde, int for_eh) |
3f76745e JM |
1790 | { |
1791 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
2ad9852d RK |
1792 | dw2_asm_output_data (1, (cfi->dw_cfi_opc |
1793 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)), | |
1794 | "DW_CFA_advance_loc 0x%lx", | |
1795 | cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
3f76745e JM |
1796 | else if (cfi->dw_cfi_opc == DW_CFA_offset) |
1797 | { | |
2e4b9b8c RH |
1798 | dw2_asm_output_data (1, (cfi->dw_cfi_opc |
1799 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)), | |
1800 | "DW_CFA_offset, column 0x%lx", | |
1801 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1802 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL); | |
3f76745e JM |
1803 | } |
1804 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
2ad9852d RK |
1805 | dw2_asm_output_data (1, (cfi->dw_cfi_opc |
1806 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)), | |
1807 | "DW_CFA_restore, column 0x%lx", | |
1808 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
3f76745e JM |
1809 | else |
1810 | { | |
2e4b9b8c RH |
1811 | dw2_asm_output_data (1, cfi->dw_cfi_opc, |
1812 | "%s", dwarf_cfi_name (cfi->dw_cfi_opc)); | |
3f76745e | 1813 | |
3f76745e JM |
1814 | switch (cfi->dw_cfi_opc) |
1815 | { | |
1816 | case DW_CFA_set_loc: | |
e1f9550a RH |
1817 | if (for_eh) |
1818 | dw2_asm_output_encoded_addr_rtx ( | |
1819 | ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0), | |
1820 | gen_rtx_SYMBOL_REF (Pmode, cfi->dw_cfi_oprnd1.dw_cfi_addr), | |
1821 | NULL); | |
1822 | else | |
1823 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, | |
1824 | cfi->dw_cfi_oprnd1.dw_cfi_addr, NULL); | |
3f76745e | 1825 | break; |
2ad9852d | 1826 | |
3f76745e | 1827 | case DW_CFA_advance_loc1: |
2e4b9b8c RH |
1828 | dw2_asm_output_delta (1, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1829 | fde->dw_fde_current_label, NULL); | |
bb727b5a | 1830 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
3f76745e | 1831 | break; |
2ad9852d | 1832 | |
3f76745e | 1833 | case DW_CFA_advance_loc2: |
2e4b9b8c RH |
1834 | dw2_asm_output_delta (2, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1835 | fde->dw_fde_current_label, NULL); | |
3f76745e JM |
1836 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
1837 | break; | |
2ad9852d | 1838 | |
3f76745e | 1839 | case DW_CFA_advance_loc4: |
2e4b9b8c RH |
1840 | dw2_asm_output_delta (4, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1841 | fde->dw_fde_current_label, NULL); | |
3f76745e JM |
1842 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
1843 | break; | |
2ad9852d | 1844 | |
3f76745e | 1845 | case DW_CFA_MIPS_advance_loc8: |
2e4b9b8c RH |
1846 | dw2_asm_output_delta (8, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1847 | fde->dw_fde_current_label, NULL); | |
1848 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e | 1849 | break; |
2ad9852d | 1850 | |
3f76745e JM |
1851 | case DW_CFA_offset_extended: |
1852 | case DW_CFA_def_cfa: | |
2ad9852d RK |
1853 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, |
1854 | NULL); | |
2e4b9b8c | 1855 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL); |
3f76745e | 1856 | break; |
2ad9852d | 1857 | |
6bb28965 JM |
1858 | case DW_CFA_offset_extended_sf: |
1859 | case DW_CFA_def_cfa_sf: | |
1860 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, | |
1861 | NULL); | |
1862 | dw2_asm_output_data_sleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL); | |
1863 | break; | |
1864 | ||
3f76745e JM |
1865 | case DW_CFA_restore_extended: |
1866 | case DW_CFA_undefined: | |
3f76745e JM |
1867 | case DW_CFA_same_value: |
1868 | case DW_CFA_def_cfa_register: | |
2ad9852d RK |
1869 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, |
1870 | NULL); | |
3f76745e | 1871 | break; |
2ad9852d | 1872 | |
3f76745e | 1873 | case DW_CFA_register: |
2ad9852d RK |
1874 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, |
1875 | NULL); | |
1876 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num, | |
1877 | NULL); | |
3f76745e | 1878 | break; |
2ad9852d | 1879 | |
3f76745e | 1880 | case DW_CFA_def_cfa_offset: |
2e4b9b8c RH |
1881 | case DW_CFA_GNU_args_size: |
1882 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset, NULL); | |
3f76745e | 1883 | break; |
2ad9852d | 1884 | |
6bb28965 JM |
1885 | case DW_CFA_def_cfa_offset_sf: |
1886 | dw2_asm_output_data_sleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset, NULL); | |
1887 | break; | |
1888 | ||
c53aa195 JM |
1889 | case DW_CFA_GNU_window_save: |
1890 | break; | |
2ad9852d | 1891 | |
7d9d8943 | 1892 | case DW_CFA_def_cfa_expression: |
6bb28965 | 1893 | case DW_CFA_expression: |
7d9d8943 AM |
1894 | output_cfa_loc (cfi); |
1895 | break; | |
2ad9852d | 1896 | |
6bb28965 JM |
1897 | case DW_CFA_GNU_negative_offset_extended: |
1898 | /* Obsoleted by DW_CFA_offset_extended_sf. */ | |
1899 | abort (); | |
1900 | ||
3f76745e JM |
1901 | default: |
1902 | break; | |
1903 | } | |
556273e0 | 1904 | } |
3f76745e JM |
1905 | } |
1906 | ||
1907 | /* Output the call frame information used to used to record information | |
1908 | that relates to calculating the frame pointer, and records the | |
1909 | location of saved registers. */ | |
1910 | ||
1911 | static void | |
7080f735 | 1912 | output_call_frame_info (int for_eh) |
3f76745e | 1913 | { |
b3694847 SS |
1914 | unsigned int i; |
1915 | dw_fde_ref fde; | |
1916 | dw_cfi_ref cfi; | |
27d95cbe | 1917 | char l1[20], l2[20], section_start_label[20]; |
ad5eeaa9 | 1918 | bool any_lsda_needed = false; |
52a11cbf | 1919 | char augmentation[6]; |
e1f9550a RH |
1920 | int augmentation_size; |
1921 | int fde_encoding = DW_EH_PE_absptr; | |
1922 | int per_encoding = DW_EH_PE_absptr; | |
1923 | int lsda_encoding = DW_EH_PE_absptr; | |
3f76745e | 1924 | |
29b91443 JM |
1925 | /* Don't emit a CIE if there won't be any FDEs. */ |
1926 | if (fde_table_in_use == 0) | |
1927 | return; | |
1928 | ||
ad5eeaa9 RH |
1929 | /* If we don't have any functions we'll want to unwind out of, don't |
1930 | emit any EH unwind information. Note that if exceptions aren't | |
1931 | enabled, we won't have collected nothrow information, and if we | |
1932 | asked for asynchronous tables, we always want this info. */ | |
737faf14 JM |
1933 | if (for_eh) |
1934 | { | |
ad5eeaa9 | 1935 | bool any_eh_needed = !flag_exceptions || flag_asynchronous_unwind_tables; |
2ad9852d RK |
1936 | |
1937 | for (i = 0; i < fde_table_in_use; i++) | |
52a11cbf | 1938 | if (fde_table[i].uses_eh_lsda) |
ad5eeaa9 | 1939 | any_eh_needed = any_lsda_needed = true; |
0366359a GK |
1940 | else if (! fde_table[i].nothrow |
1941 | && ! fde_table[i].all_throwers_are_sibcalls) | |
ad5eeaa9 | 1942 | any_eh_needed = true; |
52a11cbf RH |
1943 | |
1944 | if (! any_eh_needed) | |
1945 | return; | |
737faf14 JM |
1946 | } |
1947 | ||
aa0c1401 JL |
1948 | /* We're going to be generating comments, so turn on app. */ |
1949 | if (flag_debug_asm) | |
1950 | app_enable (); | |
956d6950 | 1951 | |
3f76745e | 1952 | if (for_eh) |
07c9d2eb | 1953 | (*targetm.asm_out.eh_frame_section) (); |
3f76745e | 1954 | else |
715bdd29 | 1955 | named_section_flags (DEBUG_FRAME_SECTION, SECTION_DEBUG); |
3f76745e | 1956 | |
27d95cbe RH |
1957 | ASM_GENERATE_INTERNAL_LABEL (section_start_label, FRAME_BEGIN_LABEL, for_eh); |
1958 | ASM_OUTPUT_LABEL (asm_out_file, section_start_label); | |
1959 | ||
556273e0 | 1960 | /* Output the CIE. */ |
a6ab3aad JM |
1961 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1962 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2e4b9b8c RH |
1963 | dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1, |
1964 | "Length of Common Information Entry"); | |
a6ab3aad JM |
1965 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1966 | ||
2e4b9b8c RH |
1967 | /* Now that the CIE pointer is PC-relative for EH, |
1968 | use 0 to identify the CIE. */ | |
1969 | dw2_asm_output_data ((for_eh ? 4 : DWARF_OFFSET_SIZE), | |
1970 | (for_eh ? 0 : DW_CIE_ID), | |
1971 | "CIE Identifier Tag"); | |
3f76745e | 1972 | |
2e4b9b8c | 1973 | dw2_asm_output_data (1, DW_CIE_VERSION, "CIE Version"); |
3f76745e | 1974 | |
52a11cbf | 1975 | augmentation[0] = 0; |
e1f9550a | 1976 | augmentation_size = 0; |
52a11cbf | 1977 | if (for_eh) |
a6ab3aad | 1978 | { |
e1f9550a RH |
1979 | char *p; |
1980 | ||
52a11cbf RH |
1981 | /* Augmentation: |
1982 | z Indicates that a uleb128 is present to size the | |
7080f735 | 1983 | augmentation section. |
e1f9550a RH |
1984 | L Indicates the encoding (and thus presence) of |
1985 | an LSDA pointer in the FDE augmentation. | |
1986 | R Indicates a non-default pointer encoding for | |
1987 | FDE code pointers. | |
1988 | P Indicates the presence of an encoding + language | |
1989 | personality routine in the CIE augmentation. */ | |
1990 | ||
1991 | fde_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0); | |
1992 | per_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/2, /*global=*/1); | |
1993 | lsda_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/0); | |
1994 | ||
1995 | p = augmentation + 1; | |
1996 | if (eh_personality_libfunc) | |
1997 | { | |
1998 | *p++ = 'P'; | |
1999 | augmentation_size += 1 + size_of_encoded_value (per_encoding); | |
2000 | } | |
52a11cbf | 2001 | if (any_lsda_needed) |
e1f9550a RH |
2002 | { |
2003 | *p++ = 'L'; | |
2004 | augmentation_size += 1; | |
2005 | } | |
2006 | if (fde_encoding != DW_EH_PE_absptr) | |
2007 | { | |
2008 | *p++ = 'R'; | |
2009 | augmentation_size += 1; | |
2010 | } | |
2011 | if (p > augmentation + 1) | |
2012 | { | |
2013 | augmentation[0] = 'z'; | |
c26fbbca | 2014 | *p = '\0'; |
e1f9550a | 2015 | } |
099c8b17 RH |
2016 | |
2017 | /* Ug. Some platforms can't do unaligned dynamic relocations at all. */ | |
2018 | if (eh_personality_libfunc && per_encoding == DW_EH_PE_aligned) | |
2019 | { | |
2020 | int offset = ( 4 /* Length */ | |
2021 | + 4 /* CIE Id */ | |
2022 | + 1 /* CIE version */ | |
2023 | + strlen (augmentation) + 1 /* Augmentation */ | |
2024 | + size_of_uleb128 (1) /* Code alignment */ | |
2025 | + size_of_sleb128 (DWARF_CIE_DATA_ALIGNMENT) | |
2026 | + 1 /* RA column */ | |
2027 | + 1 /* Augmentation size */ | |
2028 | + 1 /* Personality encoding */ ); | |
2029 | int pad = -offset & (PTR_SIZE - 1); | |
2030 | ||
2031 | augmentation_size += pad; | |
2032 | ||
2033 | /* Augmentations should be small, so there's scarce need to | |
2034 | iterate for a solution. Die if we exceed one uleb128 byte. */ | |
2035 | if (size_of_uleb128 (augmentation_size) != 1) | |
2036 | abort (); | |
2037 | } | |
a6ab3aad | 2038 | } |
3f76745e | 2039 | |
2ad9852d | 2040 | dw2_asm_output_nstring (augmentation, -1, "CIE Augmentation"); |
2e4b9b8c | 2041 | dw2_asm_output_data_uleb128 (1, "CIE Code Alignment Factor"); |
2e4b9b8c RH |
2042 | dw2_asm_output_data_sleb128 (DWARF_CIE_DATA_ALIGNMENT, |
2043 | "CIE Data Alignment Factor"); | |
2e4b9b8c | 2044 | dw2_asm_output_data (1, DWARF_FRAME_RETURN_COLUMN, "CIE RA Column"); |
3f76745e | 2045 | |
52a11cbf RH |
2046 | if (augmentation[0]) |
2047 | { | |
e1f9550a | 2048 | dw2_asm_output_data_uleb128 (augmentation_size, "Augmentation size"); |
52a11cbf | 2049 | if (eh_personality_libfunc) |
e1f9550a RH |
2050 | { |
2051 | dw2_asm_output_data (1, per_encoding, "Personality (%s)", | |
2052 | eh_data_format_name (per_encoding)); | |
2053 | dw2_asm_output_encoded_addr_rtx (per_encoding, | |
2054 | eh_personality_libfunc, NULL); | |
2055 | } | |
2ad9852d | 2056 | |
e1f9550a RH |
2057 | if (any_lsda_needed) |
2058 | dw2_asm_output_data (1, lsda_encoding, "LSDA Encoding (%s)", | |
2059 | eh_data_format_name (lsda_encoding)); | |
2ad9852d | 2060 | |
e1f9550a RH |
2061 | if (fde_encoding != DW_EH_PE_absptr) |
2062 | dw2_asm_output_data (1, fde_encoding, "FDE Encoding (%s)", | |
2063 | eh_data_format_name (fde_encoding)); | |
52a11cbf RH |
2064 | } |
2065 | ||
3f76745e | 2066 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) |
12f0b96b | 2067 | output_cfi (cfi, NULL, for_eh); |
3f76745e JM |
2068 | |
2069 | /* Pad the CIE out to an address sized boundary. */ | |
c26fbbca | 2070 | ASM_OUTPUT_ALIGN (asm_out_file, |
12f0b96b | 2071 | floor_log2 (for_eh ? PTR_SIZE : DWARF2_ADDR_SIZE)); |
a6ab3aad | 2072 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
3f76745e JM |
2073 | |
2074 | /* Loop through all of the FDE's. */ | |
2ad9852d | 2075 | for (i = 0; i < fde_table_in_use; i++) |
3f76745e JM |
2076 | { |
2077 | fde = &fde_table[i]; | |
3f76745e | 2078 | |
52a11cbf | 2079 | /* Don't emit EH unwind info for leaf functions that don't need it. */ |
ad5eeaa9 | 2080 | if (for_eh && !flag_asynchronous_unwind_tables && flag_exceptions |
b6128b8c SH |
2081 | && (fde->nothrow || fde->all_throwers_are_sibcalls) |
2082 | && !fde->uses_eh_lsda) | |
737faf14 JM |
2083 | continue; |
2084 | ||
4977bab6 | 2085 | (*targetm.asm_out.internal_label) (asm_out_file, FDE_LABEL, for_eh + i * 2); |
556273e0 KH |
2086 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i * 2); |
2087 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i * 2); | |
2e4b9b8c RH |
2088 | dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1, |
2089 | "FDE Length"); | |
a6ab3aad JM |
2090 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
2091 | ||
3f76745e | 2092 | if (for_eh) |
27d95cbe | 2093 | dw2_asm_output_delta (4, l1, section_start_label, "FDE CIE offset"); |
3f76745e | 2094 | else |
27d95cbe | 2095 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, section_start_label, |
2e4b9b8c | 2096 | "FDE CIE offset"); |
3f76745e | 2097 | |
e1f9550a RH |
2098 | if (for_eh) |
2099 | { | |
2100 | dw2_asm_output_encoded_addr_rtx (fde_encoding, | |
2101 | gen_rtx_SYMBOL_REF (Pmode, fde->dw_fde_begin), | |
2102 | "FDE initial location"); | |
2103 | dw2_asm_output_delta (size_of_encoded_value (fde_encoding), | |
c26fbbca | 2104 | fde->dw_fde_end, fde->dw_fde_begin, |
e1f9550a RH |
2105 | "FDE address range"); |
2106 | } | |
2107 | else | |
2108 | { | |
2109 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, fde->dw_fde_begin, | |
2110 | "FDE initial location"); | |
c26fbbca KH |
2111 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, |
2112 | fde->dw_fde_end, fde->dw_fde_begin, | |
e1f9550a RH |
2113 | "FDE address range"); |
2114 | } | |
3f76745e | 2115 | |
52a11cbf RH |
2116 | if (augmentation[0]) |
2117 | { | |
e1f9550a | 2118 | if (any_lsda_needed) |
52a11cbf | 2119 | { |
099c8b17 RH |
2120 | int size = size_of_encoded_value (lsda_encoding); |
2121 | ||
2122 | if (lsda_encoding == DW_EH_PE_aligned) | |
2123 | { | |
2124 | int offset = ( 4 /* Length */ | |
2125 | + 4 /* CIE offset */ | |
2126 | + 2 * size_of_encoded_value (fde_encoding) | |
2127 | + 1 /* Augmentation size */ ); | |
2128 | int pad = -offset & (PTR_SIZE - 1); | |
2129 | ||
2130 | size += pad; | |
2131 | if (size_of_uleb128 (size) != 1) | |
2132 | abort (); | |
2133 | } | |
2134 | ||
2135 | dw2_asm_output_data_uleb128 (size, "Augmentation size"); | |
e1f9550a RH |
2136 | |
2137 | if (fde->uses_eh_lsda) | |
73c68f61 SS |
2138 | { |
2139 | ASM_GENERATE_INTERNAL_LABEL (l1, "LLSDA", | |
e1f9550a | 2140 | fde->funcdef_number); |
73c68f61 | 2141 | dw2_asm_output_encoded_addr_rtx ( |
e1f9550a | 2142 | lsda_encoding, gen_rtx_SYMBOL_REF (Pmode, l1), |
7080f735 | 2143 | "Language Specific Data Area"); |
73c68f61 | 2144 | } |
e1f9550a | 2145 | else |
099c8b17 RH |
2146 | { |
2147 | if (lsda_encoding == DW_EH_PE_aligned) | |
2148 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
2ad9852d RK |
2149 | dw2_asm_output_data |
2150 | (size_of_encoded_value (lsda_encoding), 0, | |
2151 | "Language Specific Data Area (none)"); | |
099c8b17 | 2152 | } |
52a11cbf RH |
2153 | } |
2154 | else | |
e1f9550a | 2155 | dw2_asm_output_data_uleb128 (0, "Augmentation size"); |
52a11cbf RH |
2156 | } |
2157 | ||
3f76745e JM |
2158 | /* Loop through the Call Frame Instructions associated with |
2159 | this FDE. */ | |
2160 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
2161 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
12f0b96b | 2162 | output_cfi (cfi, fde, for_eh); |
3f76745e | 2163 | |
a6ab3aad | 2164 | /* Pad the FDE out to an address sized boundary. */ |
c26fbbca | 2165 | ASM_OUTPUT_ALIGN (asm_out_file, |
73c68f61 | 2166 | floor_log2 ((for_eh ? PTR_SIZE : DWARF2_ADDR_SIZE))); |
a6ab3aad | 2167 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
3f76745e | 2168 | } |
2e4b9b8c | 2169 | |
7606e68f | 2170 | if (for_eh && targetm.terminate_dw2_eh_frame_info) |
2e4b9b8c | 2171 | dw2_asm_output_data (4, 0, "End of Table"); |
a6ab3aad JM |
2172 | #ifdef MIPS_DEBUGGING_INFO |
2173 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
2174 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
2175 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
2176 | #endif | |
aa0c1401 JL |
2177 | |
2178 | /* Turn off app to make assembly quicker. */ | |
2179 | if (flag_debug_asm) | |
2180 | app_disable (); | |
a6ab3aad JM |
2181 | } |
2182 | ||
3f76745e JM |
2183 | /* Output a marker (i.e. a label) for the beginning of a function, before |
2184 | the prologue. */ | |
2185 | ||
2186 | void | |
7080f735 AJ |
2187 | dwarf2out_begin_prologue (unsigned int line ATTRIBUTE_UNUSED, |
2188 | const char *file ATTRIBUTE_UNUSED) | |
3f76745e JM |
2189 | { |
2190 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
b3694847 | 2191 | dw_fde_ref fde; |
3f76745e | 2192 | |
2a1ee410 RH |
2193 | current_function_func_begin_label = 0; |
2194 | ||
2195 | #ifdef IA64_UNWIND_INFO | |
2196 | /* ??? current_function_func_begin_label is also used by except.c | |
2197 | for call-site information. We must emit this label if it might | |
2198 | be used. */ | |
2199 | if ((! flag_exceptions || USING_SJLJ_EXCEPTIONS) | |
2200 | && ! dwarf2out_do_frame ()) | |
2201 | return; | |
2202 | #else | |
2203 | if (! dwarf2out_do_frame ()) | |
2204 | return; | |
2205 | #endif | |
2206 | ||
3f76745e JM |
2207 | function_section (current_function_decl); |
2208 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
df696a75 | 2209 | current_function_funcdef_no); |
2a1ee410 | 2210 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, FUNC_BEGIN_LABEL, |
df696a75 | 2211 | current_function_funcdef_no); |
00262c8a | 2212 | current_function_func_begin_label = get_identifier (label); |
3f76745e | 2213 | |
2a1ee410 RH |
2214 | #ifdef IA64_UNWIND_INFO |
2215 | /* We can elide the fde allocation if we're not emitting debug info. */ | |
2216 | if (! dwarf2out_do_frame ()) | |
2217 | return; | |
2218 | #endif | |
2219 | ||
3f76745e JM |
2220 | /* Expand the fde table if necessary. */ |
2221 | if (fde_table_in_use == fde_table_allocated) | |
2222 | { | |
2223 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
17211ab5 GK |
2224 | fde_table = ggc_realloc (fde_table, |
2225 | fde_table_allocated * sizeof (dw_fde_node)); | |
2226 | memset (fde_table + fde_table_in_use, 0, | |
2227 | FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
a3f97cbb | 2228 | } |
3f76745e JM |
2229 | |
2230 | /* Record the FDE associated with this function. */ | |
2231 | current_funcdef_fde = fde_table_in_use; | |
2232 | ||
2233 | /* Add the new FDE at the end of the fde_table. */ | |
2234 | fde = &fde_table[fde_table_in_use++]; | |
2235 | fde->dw_fde_begin = xstrdup (label); | |
2236 | fde->dw_fde_current_label = NULL; | |
2237 | fde->dw_fde_end = NULL; | |
2238 | fde->dw_fde_cfi = NULL; | |
df696a75 | 2239 | fde->funcdef_number = current_function_funcdef_no; |
fb13d4d0 | 2240 | fde->nothrow = current_function_nothrow; |
52a11cbf | 2241 | fde->uses_eh_lsda = cfun->uses_eh_lsda; |
b6128b8c | 2242 | fde->all_throwers_are_sibcalls = cfun->all_throwers_are_sibcalls; |
737faf14 | 2243 | |
b57d9225 | 2244 | args_size = old_args_size = 0; |
653e276c | 2245 | |
2ad9852d RK |
2246 | /* We only want to output line number information for the genuine dwarf2 |
2247 | prologue case, not the eh frame case. */ | |
653e276c NB |
2248 | #ifdef DWARF2_DEBUGGING_INFO |
2249 | if (file) | |
2250 | dwarf2out_source_line (line, file); | |
2251 | #endif | |
3f76745e JM |
2252 | } |
2253 | ||
2254 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
2255 | for a function definition. This gets called *after* the epilogue code has | |
2256 | been generated. */ | |
2257 | ||
2258 | void | |
7080f735 AJ |
2259 | dwarf2out_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, |
2260 | const char *file ATTRIBUTE_UNUSED) | |
3f76745e JM |
2261 | { |
2262 | dw_fde_ref fde; | |
2263 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2264 | ||
2265 | /* Output a label to mark the endpoint of the code generated for this | |
3ef42a0c | 2266 | function. */ |
df696a75 RH |
2267 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, |
2268 | current_function_funcdef_no); | |
3f76745e JM |
2269 | ASM_OUTPUT_LABEL (asm_out_file, label); |
2270 | fde = &fde_table[fde_table_in_use - 1]; | |
2271 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
2272 | } |
2273 | ||
2274 | void | |
7080f735 | 2275 | dwarf2out_frame_init (void) |
3f76745e JM |
2276 | { |
2277 | /* Allocate the initial hunk of the fde_table. */ | |
703ad42b | 2278 | fde_table = ggc_alloc_cleared (FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); |
3f76745e JM |
2279 | fde_table_allocated = FDE_TABLE_INCREMENT; |
2280 | fde_table_in_use = 0; | |
2281 | ||
2282 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
2283 | sake of lookup_cfa. */ | |
2284 | ||
a6ab3aad | 2285 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
2286 | /* On entry, the Canonical Frame Address is at SP. */ |
2287 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
2288 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
2289 | #endif |
2290 | } | |
2291 | ||
2292 | void | |
7080f735 | 2293 | dwarf2out_frame_finish (void) |
3f76745e | 2294 | { |
3f76745e | 2295 | /* Output call frame information. */ |
7a0c8d71 | 2296 | if (write_symbols == DWARF2_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) |
3f76745e | 2297 | output_call_frame_info (0); |
2ad9852d | 2298 | |
ddee9e8d | 2299 | if (! USING_SJLJ_EXCEPTIONS && (flag_unwind_tables || flag_exceptions)) |
3f76745e | 2300 | output_call_frame_info (1); |
556273e0 | 2301 | } |
17211ab5 | 2302 | #endif |
7d9d8943 AM |
2303 | \f |
2304 | /* And now, the subset of the debugging information support code necessary | |
2305 | for emitting location expressions. */ | |
3f76745e | 2306 | |
b9203463 RH |
2307 | /* We need some way to distinguish DW_OP_addr with a direct symbol |
2308 | relocation from DW_OP_addr with a dtp-relative symbol relocation. */ | |
2309 | #define INTERNAL_DW_OP_tls_addr (0x100 + DW_OP_addr) | |
2310 | ||
2311 | ||
7d9d8943 AM |
2312 | typedef struct dw_val_struct *dw_val_ref; |
2313 | typedef struct die_struct *dw_die_ref; | |
2314 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
63e46568 | 2315 | typedef struct dw_loc_list_struct *dw_loc_list_ref; |
3f76745e JM |
2316 | |
2317 | /* Each DIE may have a series of attribute/value pairs. Values | |
2318 | can take on several forms. The forms that are used in this | |
2319 | implementation are listed below. */ | |
2320 | ||
17211ab5 | 2321 | enum dw_val_class |
3f76745e JM |
2322 | { |
2323 | dw_val_class_addr, | |
a20612aa | 2324 | dw_val_class_offset, |
3f76745e | 2325 | dw_val_class_loc, |
63e46568 | 2326 | dw_val_class_loc_list, |
2bee6045 | 2327 | dw_val_class_range_list, |
3f76745e JM |
2328 | dw_val_class_const, |
2329 | dw_val_class_unsigned_const, | |
2330 | dw_val_class_long_long, | |
2331 | dw_val_class_float, | |
2332 | dw_val_class_flag, | |
2333 | dw_val_class_die_ref, | |
2334 | dw_val_class_fde_ref, | |
2335 | dw_val_class_lbl_id, | |
8b790721 | 2336 | dw_val_class_lbl_offset, |
3f76745e | 2337 | dw_val_class_str |
17211ab5 | 2338 | }; |
a3f97cbb | 2339 | |
3f76745e | 2340 | /* Describe a double word constant value. */ |
21217bd0 | 2341 | /* ??? Every instance of long_long in the code really means CONST_DOUBLE. */ |
3f76745e | 2342 | |
17211ab5 | 2343 | typedef struct dw_long_long_struct GTY(()) |
a3f97cbb | 2344 | { |
3f76745e JM |
2345 | unsigned long hi; |
2346 | unsigned long low; | |
2347 | } | |
2348 | dw_long_long_const; | |
2349 | ||
2350 | /* Describe a floating point constant value. */ | |
2351 | ||
17211ab5 | 2352 | typedef struct dw_fp_struct GTY(()) |
3f76745e | 2353 | { |
17211ab5 | 2354 | long * GTY((length ("%h.length"))) array; |
3f76745e JM |
2355 | unsigned length; |
2356 | } | |
2357 | dw_float_const; | |
2358 | ||
956d6950 | 2359 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2360 | represented internally. */ |
2361 | ||
17211ab5 | 2362 | typedef struct dw_val_struct GTY(()) |
3f76745e | 2363 | { |
17211ab5 GK |
2364 | enum dw_val_class val_class; |
2365 | union dw_val_struct_union | |
a3f97cbb | 2366 | { |
17211ab5 GK |
2367 | rtx GTY ((tag ("dw_val_class_addr"))) val_addr; |
2368 | long unsigned GTY ((tag ("dw_val_class_offset"))) val_offset; | |
2369 | dw_loc_list_ref GTY ((tag ("dw_val_class_loc_list"))) val_loc_list; | |
2370 | dw_loc_descr_ref GTY ((tag ("dw_val_class_loc"))) val_loc; | |
2371 | long int GTY ((default (""))) val_int; | |
2372 | long unsigned GTY ((tag ("dw_val_class_unsigned_const"))) val_unsigned; | |
2373 | dw_long_long_const GTY ((tag ("dw_val_class_long_long"))) val_long_long; | |
2374 | dw_float_const GTY ((tag ("dw_val_class_float"))) val_float; | |
2375 | struct dw_val_die_union | |
2ad9852d RK |
2376 | { |
2377 | dw_die_ref die; | |
2378 | int external; | |
17211ab5 GK |
2379 | } GTY ((tag ("dw_val_class_die_ref"))) val_die_ref; |
2380 | unsigned GTY ((tag ("dw_val_class_fde_ref"))) val_fde_index; | |
2381 | struct indirect_string_node * GTY ((tag ("dw_val_class_str"))) val_str; | |
2382 | char * GTY ((tag ("dw_val_class_lbl_id"))) val_lbl_id; | |
2383 | unsigned char GTY ((tag ("dw_val_class_flag"))) val_flag; | |
a3f97cbb | 2384 | } |
17211ab5 | 2385 | GTY ((desc ("%1.val_class"))) v; |
3f76745e JM |
2386 | } |
2387 | dw_val_node; | |
2388 | ||
2389 | /* Locations in memory are described using a sequence of stack machine | |
2390 | operations. */ | |
2391 | ||
17211ab5 | 2392 | typedef struct dw_loc_descr_struct GTY(()) |
3f76745e JM |
2393 | { |
2394 | dw_loc_descr_ref dw_loc_next; | |
2395 | enum dwarf_location_atom dw_loc_opc; | |
2396 | dw_val_node dw_loc_oprnd1; | |
2397 | dw_val_node dw_loc_oprnd2; | |
d8041cc8 | 2398 | int dw_loc_addr; |
3f76745e JM |
2399 | } |
2400 | dw_loc_descr_node; | |
2401 | ||
63e46568 DB |
2402 | /* Location lists are ranges + location descriptions for that range, |
2403 | so you can track variables that are in different places over | |
30f7a378 | 2404 | their entire life. */ |
17211ab5 | 2405 | typedef struct dw_loc_list_struct GTY(()) |
63e46568 DB |
2406 | { |
2407 | dw_loc_list_ref dw_loc_next; | |
2408 | const char *begin; /* Label for begin address of range */ | |
2409 | const char *end; /* Label for end address of range */ | |
2ad9852d RK |
2410 | char *ll_symbol; /* Label for beginning of location list. |
2411 | Only on head of list */ | |
63e46568 DB |
2412 | const char *section; /* Section this loclist is relative to */ |
2413 | dw_loc_descr_ref expr; | |
2414 | } dw_loc_list_node; | |
2415 | ||
17211ab5 GK |
2416 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) |
2417 | ||
7080f735 AJ |
2418 | static const char *dwarf_stack_op_name (unsigned); |
2419 | static dw_loc_descr_ref new_loc_descr (enum dwarf_location_atom, | |
2420 | unsigned long, unsigned long); | |
2421 | static void add_loc_descr (dw_loc_descr_ref *, dw_loc_descr_ref); | |
2422 | static unsigned long size_of_loc_descr (dw_loc_descr_ref); | |
2423 | static unsigned long size_of_locs (dw_loc_descr_ref); | |
2424 | static void output_loc_operands (dw_loc_descr_ref); | |
2425 | static void output_loc_sequence (dw_loc_descr_ref); | |
3f76745e | 2426 | |
7d9d8943 | 2427 | /* Convert a DWARF stack opcode into its string name. */ |
3f76745e | 2428 | |
7d9d8943 | 2429 | static const char * |
7080f735 | 2430 | dwarf_stack_op_name (unsigned int op) |
ef76d03b | 2431 | { |
7d9d8943 AM |
2432 | switch (op) |
2433 | { | |
2434 | case DW_OP_addr: | |
b9203463 | 2435 | case INTERNAL_DW_OP_tls_addr: |
7d9d8943 AM |
2436 | return "DW_OP_addr"; |
2437 | case DW_OP_deref: | |
2438 | return "DW_OP_deref"; | |
2439 | case DW_OP_const1u: | |
2440 | return "DW_OP_const1u"; | |
2441 | case DW_OP_const1s: | |
2442 | return "DW_OP_const1s"; | |
2443 | case DW_OP_const2u: | |
2444 | return "DW_OP_const2u"; | |
2445 | case DW_OP_const2s: | |
2446 | return "DW_OP_const2s"; | |
2447 | case DW_OP_const4u: | |
2448 | return "DW_OP_const4u"; | |
2449 | case DW_OP_const4s: | |
2450 | return "DW_OP_const4s"; | |
2451 | case DW_OP_const8u: | |
2452 | return "DW_OP_const8u"; | |
2453 | case DW_OP_const8s: | |
2454 | return "DW_OP_const8s"; | |
2455 | case DW_OP_constu: | |
2456 | return "DW_OP_constu"; | |
2457 | case DW_OP_consts: | |
2458 | return "DW_OP_consts"; | |
2459 | case DW_OP_dup: | |
2460 | return "DW_OP_dup"; | |
2461 | case DW_OP_drop: | |
2462 | return "DW_OP_drop"; | |
2463 | case DW_OP_over: | |
2464 | return "DW_OP_over"; | |
2465 | case DW_OP_pick: | |
2466 | return "DW_OP_pick"; | |
2467 | case DW_OP_swap: | |
2468 | return "DW_OP_swap"; | |
2469 | case DW_OP_rot: | |
2470 | return "DW_OP_rot"; | |
2471 | case DW_OP_xderef: | |
2472 | return "DW_OP_xderef"; | |
2473 | case DW_OP_abs: | |
2474 | return "DW_OP_abs"; | |
2475 | case DW_OP_and: | |
2476 | return "DW_OP_and"; | |
2477 | case DW_OP_div: | |
2478 | return "DW_OP_div"; | |
2479 | case DW_OP_minus: | |
2480 | return "DW_OP_minus"; | |
2481 | case DW_OP_mod: | |
2482 | return "DW_OP_mod"; | |
2483 | case DW_OP_mul: | |
2484 | return "DW_OP_mul"; | |
2485 | case DW_OP_neg: | |
2486 | return "DW_OP_neg"; | |
2487 | case DW_OP_not: | |
2488 | return "DW_OP_not"; | |
2489 | case DW_OP_or: | |
2490 | return "DW_OP_or"; | |
2491 | case DW_OP_plus: | |
2492 | return "DW_OP_plus"; | |
2493 | case DW_OP_plus_uconst: | |
2494 | return "DW_OP_plus_uconst"; | |
2495 | case DW_OP_shl: | |
2496 | return "DW_OP_shl"; | |
2497 | case DW_OP_shr: | |
2498 | return "DW_OP_shr"; | |
2499 | case DW_OP_shra: | |
2500 | return "DW_OP_shra"; | |
2501 | case DW_OP_xor: | |
2502 | return "DW_OP_xor"; | |
2503 | case DW_OP_bra: | |
2504 | return "DW_OP_bra"; | |
2505 | case DW_OP_eq: | |
2506 | return "DW_OP_eq"; | |
2507 | case DW_OP_ge: | |
2508 | return "DW_OP_ge"; | |
2509 | case DW_OP_gt: | |
2510 | return "DW_OP_gt"; | |
2511 | case DW_OP_le: | |
2512 | return "DW_OP_le"; | |
2513 | case DW_OP_lt: | |
2514 | return "DW_OP_lt"; | |
2515 | case DW_OP_ne: | |
2516 | return "DW_OP_ne"; | |
2517 | case DW_OP_skip: | |
2518 | return "DW_OP_skip"; | |
2519 | case DW_OP_lit0: | |
2520 | return "DW_OP_lit0"; | |
2521 | case DW_OP_lit1: | |
2522 | return "DW_OP_lit1"; | |
2523 | case DW_OP_lit2: | |
2524 | return "DW_OP_lit2"; | |
2525 | case DW_OP_lit3: | |
2526 | return "DW_OP_lit3"; | |
2527 | case DW_OP_lit4: | |
2528 | return "DW_OP_lit4"; | |
2529 | case DW_OP_lit5: | |
2530 | return "DW_OP_lit5"; | |
2531 | case DW_OP_lit6: | |
2532 | return "DW_OP_lit6"; | |
2533 | case DW_OP_lit7: | |
2534 | return "DW_OP_lit7"; | |
2535 | case DW_OP_lit8: | |
2536 | return "DW_OP_lit8"; | |
2537 | case DW_OP_lit9: | |
2538 | return "DW_OP_lit9"; | |
2539 | case DW_OP_lit10: | |
2540 | return "DW_OP_lit10"; | |
2541 | case DW_OP_lit11: | |
2542 | return "DW_OP_lit11"; | |
2543 | case DW_OP_lit12: | |
2544 | return "DW_OP_lit12"; | |
2545 | case DW_OP_lit13: | |
2546 | return "DW_OP_lit13"; | |
2547 | case DW_OP_lit14: | |
2548 | return "DW_OP_lit14"; | |
2549 | case DW_OP_lit15: | |
2550 | return "DW_OP_lit15"; | |
2551 | case DW_OP_lit16: | |
2552 | return "DW_OP_lit16"; | |
2553 | case DW_OP_lit17: | |
2554 | return "DW_OP_lit17"; | |
2555 | case DW_OP_lit18: | |
2556 | return "DW_OP_lit18"; | |
2557 | case DW_OP_lit19: | |
2558 | return "DW_OP_lit19"; | |
2559 | case DW_OP_lit20: | |
2560 | return "DW_OP_lit20"; | |
2561 | case DW_OP_lit21: | |
2562 | return "DW_OP_lit21"; | |
2563 | case DW_OP_lit22: | |
2564 | return "DW_OP_lit22"; | |
2565 | case DW_OP_lit23: | |
2566 | return "DW_OP_lit23"; | |
2567 | case DW_OP_lit24: | |
2568 | return "DW_OP_lit24"; | |
2569 | case DW_OP_lit25: | |
2570 | return "DW_OP_lit25"; | |
2571 | case DW_OP_lit26: | |
2572 | return "DW_OP_lit26"; | |
2573 | case DW_OP_lit27: | |
2574 | return "DW_OP_lit27"; | |
2575 | case DW_OP_lit28: | |
2576 | return "DW_OP_lit28"; | |
2577 | case DW_OP_lit29: | |
2578 | return "DW_OP_lit29"; | |
2579 | case DW_OP_lit30: | |
2580 | return "DW_OP_lit30"; | |
2581 | case DW_OP_lit31: | |
2582 | return "DW_OP_lit31"; | |
2583 | case DW_OP_reg0: | |
2584 | return "DW_OP_reg0"; | |
2585 | case DW_OP_reg1: | |
2586 | return "DW_OP_reg1"; | |
2587 | case DW_OP_reg2: | |
2588 | return "DW_OP_reg2"; | |
2589 | case DW_OP_reg3: | |
2590 | return "DW_OP_reg3"; | |
2591 | case DW_OP_reg4: | |
2592 | return "DW_OP_reg4"; | |
2593 | case DW_OP_reg5: | |
2594 | return "DW_OP_reg5"; | |
2595 | case DW_OP_reg6: | |
2596 | return "DW_OP_reg6"; | |
2597 | case DW_OP_reg7: | |
2598 | return "DW_OP_reg7"; | |
2599 | case DW_OP_reg8: | |
2600 | return "DW_OP_reg8"; | |
2601 | case DW_OP_reg9: | |
2602 | return "DW_OP_reg9"; | |
2603 | case DW_OP_reg10: | |
2604 | return "DW_OP_reg10"; | |
2605 | case DW_OP_reg11: | |
2606 | return "DW_OP_reg11"; | |
2607 | case DW_OP_reg12: | |
2608 | return "DW_OP_reg12"; | |
2609 | case DW_OP_reg13: | |
2610 | return "DW_OP_reg13"; | |
2611 | case DW_OP_reg14: | |
2612 | return "DW_OP_reg14"; | |
2613 | case DW_OP_reg15: | |
2614 | return "DW_OP_reg15"; | |
2615 | case DW_OP_reg16: | |
2616 | return "DW_OP_reg16"; | |
2617 | case DW_OP_reg17: | |
2618 | return "DW_OP_reg17"; | |
2619 | case DW_OP_reg18: | |
2620 | return "DW_OP_reg18"; | |
2621 | case DW_OP_reg19: | |
2622 | return "DW_OP_reg19"; | |
2623 | case DW_OP_reg20: | |
2624 | return "DW_OP_reg20"; | |
2625 | case DW_OP_reg21: | |
2626 | return "DW_OP_reg21"; | |
2627 | case DW_OP_reg22: | |
2628 | return "DW_OP_reg22"; | |
2629 | case DW_OP_reg23: | |
2630 | return "DW_OP_reg23"; | |
2631 | case DW_OP_reg24: | |
2632 | return "DW_OP_reg24"; | |
2633 | case DW_OP_reg25: | |
2634 | return "DW_OP_reg25"; | |
2635 | case DW_OP_reg26: | |
2636 | return "DW_OP_reg26"; | |
2637 | case DW_OP_reg27: | |
2638 | return "DW_OP_reg27"; | |
2639 | case DW_OP_reg28: | |
2640 | return "DW_OP_reg28"; | |
2641 | case DW_OP_reg29: | |
2642 | return "DW_OP_reg29"; | |
2643 | case DW_OP_reg30: | |
2644 | return "DW_OP_reg30"; | |
2645 | case DW_OP_reg31: | |
2646 | return "DW_OP_reg31"; | |
2647 | case DW_OP_breg0: | |
2648 | return "DW_OP_breg0"; | |
2649 | case DW_OP_breg1: | |
2650 | return "DW_OP_breg1"; | |
2651 | case DW_OP_breg2: | |
2652 | return "DW_OP_breg2"; | |
2653 | case DW_OP_breg3: | |
2654 | return "DW_OP_breg3"; | |
2655 | case DW_OP_breg4: | |
2656 | return "DW_OP_breg4"; | |
2657 | case DW_OP_breg5: | |
2658 | return "DW_OP_breg5"; | |
2659 | case DW_OP_breg6: | |
2660 | return "DW_OP_breg6"; | |
2661 | case DW_OP_breg7: | |
2662 | return "DW_OP_breg7"; | |
2663 | case DW_OP_breg8: | |
2664 | return "DW_OP_breg8"; | |
2665 | case DW_OP_breg9: | |
2666 | return "DW_OP_breg9"; | |
2667 | case DW_OP_breg10: | |
2668 | return "DW_OP_breg10"; | |
2669 | case DW_OP_breg11: | |
2670 | return "DW_OP_breg11"; | |
2671 | case DW_OP_breg12: | |
2672 | return "DW_OP_breg12"; | |
2673 | case DW_OP_breg13: | |
2674 | return "DW_OP_breg13"; | |
2675 | case DW_OP_breg14: | |
2676 | return "DW_OP_breg14"; | |
2677 | case DW_OP_breg15: | |
2678 | return "DW_OP_breg15"; | |
2679 | case DW_OP_breg16: | |
2680 | return "DW_OP_breg16"; | |
2681 | case DW_OP_breg17: | |
2682 | return "DW_OP_breg17"; | |
2683 | case DW_OP_breg18: | |
2684 | return "DW_OP_breg18"; | |
2685 | case DW_OP_breg19: | |
2686 | return "DW_OP_breg19"; | |
2687 | case DW_OP_breg20: | |
2688 | return "DW_OP_breg20"; | |
2689 | case DW_OP_breg21: | |
2690 | return "DW_OP_breg21"; | |
2691 | case DW_OP_breg22: | |
2692 | return "DW_OP_breg22"; | |
2693 | case DW_OP_breg23: | |
2694 | return "DW_OP_breg23"; | |
2695 | case DW_OP_breg24: | |
2696 | return "DW_OP_breg24"; | |
2697 | case DW_OP_breg25: | |
2698 | return "DW_OP_breg25"; | |
2699 | case DW_OP_breg26: | |
2700 | return "DW_OP_breg26"; | |
2701 | case DW_OP_breg27: | |
2702 | return "DW_OP_breg27"; | |
2703 | case DW_OP_breg28: | |
2704 | return "DW_OP_breg28"; | |
2705 | case DW_OP_breg29: | |
2706 | return "DW_OP_breg29"; | |
2707 | case DW_OP_breg30: | |
2708 | return "DW_OP_breg30"; | |
2709 | case DW_OP_breg31: | |
2710 | return "DW_OP_breg31"; | |
2711 | case DW_OP_regx: | |
2712 | return "DW_OP_regx"; | |
2713 | case DW_OP_fbreg: | |
2714 | return "DW_OP_fbreg"; | |
2715 | case DW_OP_bregx: | |
2716 | return "DW_OP_bregx"; | |
2717 | case DW_OP_piece: | |
2718 | return "DW_OP_piece"; | |
2719 | case DW_OP_deref_size: | |
2720 | return "DW_OP_deref_size"; | |
2721 | case DW_OP_xderef_size: | |
2722 | return "DW_OP_xderef_size"; | |
2723 | case DW_OP_nop: | |
2724 | return "DW_OP_nop"; | |
b9203463 RH |
2725 | case DW_OP_push_object_address: |
2726 | return "DW_OP_push_object_address"; | |
2727 | case DW_OP_call2: | |
2728 | return "DW_OP_call2"; | |
2729 | case DW_OP_call4: | |
2730 | return "DW_OP_call4"; | |
2731 | case DW_OP_call_ref: | |
2732 | return "DW_OP_call_ref"; | |
2733 | case DW_OP_GNU_push_tls_address: | |
2734 | return "DW_OP_GNU_push_tls_address"; | |
3f76745e | 2735 | default: |
7d9d8943 | 2736 | return "OP_<unknown>"; |
3f76745e | 2737 | } |
bdb669cb | 2738 | } |
a3f97cbb | 2739 | |
7d9d8943 AM |
2740 | /* Return a pointer to a newly allocated location description. Location |
2741 | descriptions are simple expression terms that can be strung | |
2742 | together to form more complicated location (address) descriptions. */ | |
2743 | ||
2744 | static inline dw_loc_descr_ref | |
7080f735 AJ |
2745 | new_loc_descr (enum dwarf_location_atom op, long unsigned int oprnd1, |
2746 | long unsigned int oprnd2) | |
4b674448 | 2747 | { |
703ad42b | 2748 | dw_loc_descr_ref descr = ggc_alloc_cleared (sizeof (dw_loc_descr_node)); |
71dfc51f | 2749 | |
7d9d8943 AM |
2750 | descr->dw_loc_opc = op; |
2751 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
2752 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
2753 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
2754 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 2755 | |
7d9d8943 AM |
2756 | return descr; |
2757 | } | |
2758 | ||
63e46568 | 2759 | |
7d9d8943 AM |
2760 | /* Add a location description term to a location description expression. */ |
2761 | ||
2762 | static inline void | |
7080f735 | 2763 | add_loc_descr (dw_loc_descr_ref *list_head, dw_loc_descr_ref descr) |
7d9d8943 | 2764 | { |
b3694847 | 2765 | dw_loc_descr_ref *d; |
7d9d8943 AM |
2766 | |
2767 | /* Find the end of the chain. */ | |
2768 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
2769 | ; | |
2770 | ||
2771 | *d = descr; | |
2772 | } | |
2773 | ||
2774 | /* Return the size of a location descriptor. */ | |
2775 | ||
2776 | static unsigned long | |
7080f735 | 2777 | size_of_loc_descr (dw_loc_descr_ref loc) |
7d9d8943 | 2778 | { |
b3694847 | 2779 | unsigned long size = 1; |
7d9d8943 AM |
2780 | |
2781 | switch (loc->dw_loc_opc) | |
2782 | { | |
2783 | case DW_OP_addr: | |
b9203463 | 2784 | case INTERNAL_DW_OP_tls_addr: |
7d9d8943 AM |
2785 | size += DWARF2_ADDR_SIZE; |
2786 | break; | |
2787 | case DW_OP_const1u: | |
2788 | case DW_OP_const1s: | |
2789 | size += 1; | |
2790 | break; | |
2791 | case DW_OP_const2u: | |
2792 | case DW_OP_const2s: | |
2793 | size += 2; | |
2794 | break; | |
2795 | case DW_OP_const4u: | |
2796 | case DW_OP_const4s: | |
2797 | size += 4; | |
2798 | break; | |
2799 | case DW_OP_const8u: | |
2800 | case DW_OP_const8s: | |
2801 | size += 8; | |
2802 | break; | |
2803 | case DW_OP_constu: | |
2804 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2805 | break; | |
2806 | case DW_OP_consts: | |
2807 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2808 | break; | |
2809 | case DW_OP_pick: | |
2810 | size += 1; | |
2811 | break; | |
2812 | case DW_OP_plus_uconst: | |
2813 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2814 | break; | |
2815 | case DW_OP_skip: | |
2816 | case DW_OP_bra: | |
2817 | size += 2; | |
2818 | break; | |
2819 | case DW_OP_breg0: | |
2820 | case DW_OP_breg1: | |
2821 | case DW_OP_breg2: | |
2822 | case DW_OP_breg3: | |
2823 | case DW_OP_breg4: | |
2824 | case DW_OP_breg5: | |
2825 | case DW_OP_breg6: | |
2826 | case DW_OP_breg7: | |
2827 | case DW_OP_breg8: | |
2828 | case DW_OP_breg9: | |
2829 | case DW_OP_breg10: | |
2830 | case DW_OP_breg11: | |
2831 | case DW_OP_breg12: | |
2832 | case DW_OP_breg13: | |
2833 | case DW_OP_breg14: | |
2834 | case DW_OP_breg15: | |
2835 | case DW_OP_breg16: | |
2836 | case DW_OP_breg17: | |
2837 | case DW_OP_breg18: | |
2838 | case DW_OP_breg19: | |
2839 | case DW_OP_breg20: | |
2840 | case DW_OP_breg21: | |
2841 | case DW_OP_breg22: | |
2842 | case DW_OP_breg23: | |
2843 | case DW_OP_breg24: | |
2844 | case DW_OP_breg25: | |
2845 | case DW_OP_breg26: | |
2846 | case DW_OP_breg27: | |
2847 | case DW_OP_breg28: | |
2848 | case DW_OP_breg29: | |
2849 | case DW_OP_breg30: | |
2850 | case DW_OP_breg31: | |
2851 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2852 | break; | |
2853 | case DW_OP_regx: | |
2854 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2855 | break; | |
2856 | case DW_OP_fbreg: | |
2857 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2858 | break; | |
2859 | case DW_OP_bregx: | |
2860 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2861 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
2862 | break; | |
2863 | case DW_OP_piece: | |
2864 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2865 | break; | |
2866 | case DW_OP_deref_size: | |
2867 | case DW_OP_xderef_size: | |
2868 | size += 1; | |
2869 | break; | |
b9203463 RH |
2870 | case DW_OP_call2: |
2871 | size += 2; | |
2872 | break; | |
2873 | case DW_OP_call4: | |
2874 | size += 4; | |
2875 | break; | |
2876 | case DW_OP_call_ref: | |
2877 | size += DWARF2_ADDR_SIZE; | |
2878 | break; | |
3f76745e | 2879 | default: |
7d9d8943 | 2880 | break; |
4b674448 | 2881 | } |
7d9d8943 AM |
2882 | |
2883 | return size; | |
4b674448 JM |
2884 | } |
2885 | ||
7d9d8943 | 2886 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 2887 | |
7d9d8943 | 2888 | static unsigned long |
7080f735 | 2889 | size_of_locs (dw_loc_descr_ref loc) |
4b674448 | 2890 | { |
2ad9852d | 2891 | unsigned long size; |
7d9d8943 | 2892 | |
2ad9852d | 2893 | for (size = 0; loc != NULL; loc = loc->dw_loc_next) |
d8041cc8 RH |
2894 | { |
2895 | loc->dw_loc_addr = size; | |
2896 | size += size_of_loc_descr (loc); | |
2897 | } | |
7d9d8943 AM |
2898 | |
2899 | return size; | |
4b674448 JM |
2900 | } |
2901 | ||
7d9d8943 | 2902 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 2903 | |
7d9d8943 | 2904 | static void |
7080f735 | 2905 | output_loc_operands (dw_loc_descr_ref loc) |
a3f97cbb | 2906 | { |
b3694847 SS |
2907 | dw_val_ref val1 = &loc->dw_loc_oprnd1; |
2908 | dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
7d9d8943 AM |
2909 | |
2910 | switch (loc->dw_loc_opc) | |
a3f97cbb | 2911 | { |
0517872a | 2912 | #ifdef DWARF2_DEBUGGING_INFO |
3f76745e | 2913 | case DW_OP_addr: |
2e4b9b8c | 2914 | dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, val1->v.val_addr, NULL); |
7d9d8943 | 2915 | break; |
3f76745e | 2916 | case DW_OP_const2u: |
3f76745e | 2917 | case DW_OP_const2s: |
2e4b9b8c | 2918 | dw2_asm_output_data (2, val1->v.val_int, NULL); |
7d9d8943 | 2919 | break; |
3f76745e | 2920 | case DW_OP_const4u: |
3f76745e | 2921 | case DW_OP_const4s: |
2e4b9b8c | 2922 | dw2_asm_output_data (4, val1->v.val_int, NULL); |
7d9d8943 | 2923 | break; |
3f76745e | 2924 | case DW_OP_const8u: |
3f76745e | 2925 | case DW_OP_const8s: |
2e4b9b8c RH |
2926 | if (HOST_BITS_PER_LONG < 64) |
2927 | abort (); | |
2928 | dw2_asm_output_data (8, val1->v.val_int, NULL); | |
7d9d8943 | 2929 | break; |
0517872a JM |
2930 | case DW_OP_skip: |
2931 | case DW_OP_bra: | |
d8041cc8 RH |
2932 | { |
2933 | int offset; | |
2934 | ||
2935 | if (val1->val_class == dw_val_class_loc) | |
2936 | offset = val1->v.val_loc->dw_loc_addr - (loc->dw_loc_addr + 3); | |
2937 | else | |
2938 | abort (); | |
2939 | ||
2e4b9b8c | 2940 | dw2_asm_output_data (2, offset, NULL); |
d8041cc8 | 2941 | } |
0517872a | 2942 | break; |
3139472f JM |
2943 | #else |
2944 | case DW_OP_addr: | |
2945 | case DW_OP_const2u: | |
2946 | case DW_OP_const2s: | |
2947 | case DW_OP_const4u: | |
2948 | case DW_OP_const4s: | |
2949 | case DW_OP_const8u: | |
2950 | case DW_OP_const8s: | |
2951 | case DW_OP_skip: | |
2952 | case DW_OP_bra: | |
2953 | /* We currently don't make any attempt to make sure these are | |
73c68f61 SS |
2954 | aligned properly like we do for the main unwind info, so |
2955 | don't support emitting things larger than a byte if we're | |
2956 | only doing unwinding. */ | |
3139472f | 2957 | abort (); |
0517872a JM |
2958 | #endif |
2959 | case DW_OP_const1u: | |
2960 | case DW_OP_const1s: | |
2e4b9b8c | 2961 | dw2_asm_output_data (1, val1->v.val_int, NULL); |
0517872a | 2962 | break; |
3f76745e | 2963 | case DW_OP_constu: |
2e4b9b8c | 2964 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 2965 | break; |
3f76745e | 2966 | case DW_OP_consts: |
2e4b9b8c | 2967 | dw2_asm_output_data_sleb128 (val1->v.val_int, NULL); |
7d9d8943 AM |
2968 | break; |
2969 | case DW_OP_pick: | |
2e4b9b8c | 2970 | dw2_asm_output_data (1, val1->v.val_int, NULL); |
7d9d8943 AM |
2971 | break; |
2972 | case DW_OP_plus_uconst: | |
2e4b9b8c | 2973 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 2974 | break; |
3f76745e | 2975 | case DW_OP_breg0: |
3f76745e | 2976 | case DW_OP_breg1: |
3f76745e | 2977 | case DW_OP_breg2: |
3f76745e | 2978 | case DW_OP_breg3: |
3f76745e | 2979 | case DW_OP_breg4: |
3f76745e | 2980 | case DW_OP_breg5: |
3f76745e | 2981 | case DW_OP_breg6: |
3f76745e | 2982 | case DW_OP_breg7: |
3f76745e | 2983 | case DW_OP_breg8: |
3f76745e | 2984 | case DW_OP_breg9: |
3f76745e | 2985 | case DW_OP_breg10: |
3f76745e | 2986 | case DW_OP_breg11: |
3f76745e | 2987 | case DW_OP_breg12: |
3f76745e | 2988 | case DW_OP_breg13: |
3f76745e | 2989 | case DW_OP_breg14: |
3f76745e | 2990 | case DW_OP_breg15: |
3f76745e | 2991 | case DW_OP_breg16: |
3f76745e | 2992 | case DW_OP_breg17: |
3f76745e | 2993 | case DW_OP_breg18: |
3f76745e | 2994 | case DW_OP_breg19: |
3f76745e | 2995 | case DW_OP_breg20: |
3f76745e | 2996 | case DW_OP_breg21: |
3f76745e | 2997 | case DW_OP_breg22: |
3f76745e | 2998 | case DW_OP_breg23: |
3f76745e | 2999 | case DW_OP_breg24: |
3f76745e | 3000 | case DW_OP_breg25: |
3f76745e | 3001 | case DW_OP_breg26: |
3f76745e | 3002 | case DW_OP_breg27: |
3f76745e | 3003 | case DW_OP_breg28: |
3f76745e | 3004 | case DW_OP_breg29: |
3f76745e | 3005 | case DW_OP_breg30: |
3f76745e | 3006 | case DW_OP_breg31: |
2e4b9b8c | 3007 | dw2_asm_output_data_sleb128 (val1->v.val_int, NULL); |
7d9d8943 | 3008 | break; |
3f76745e | 3009 | case DW_OP_regx: |
2e4b9b8c | 3010 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 3011 | break; |
3f76745e | 3012 | case DW_OP_fbreg: |
2e4b9b8c | 3013 | dw2_asm_output_data_sleb128 (val1->v.val_int, NULL); |
7d9d8943 | 3014 | break; |
3f76745e | 3015 | case DW_OP_bregx: |
2e4b9b8c RH |
3016 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
3017 | dw2_asm_output_data_sleb128 (val2->v.val_int, NULL); | |
7d9d8943 | 3018 | break; |
3f76745e | 3019 | case DW_OP_piece: |
2e4b9b8c | 3020 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 3021 | break; |
3f76745e | 3022 | case DW_OP_deref_size: |
3f76745e | 3023 | case DW_OP_xderef_size: |
2e4b9b8c | 3024 | dw2_asm_output_data (1, val1->v.val_int, NULL); |
7d9d8943 | 3025 | break; |
b9203463 RH |
3026 | |
3027 | case INTERNAL_DW_OP_tls_addr: | |
3028 | #ifdef ASM_OUTPUT_DWARF_DTPREL | |
3029 | ASM_OUTPUT_DWARF_DTPREL (asm_out_file, DWARF2_ADDR_SIZE, | |
3030 | val1->v.val_addr); | |
3031 | fputc ('\n', asm_out_file); | |
3032 | #else | |
3033 | abort (); | |
3034 | #endif | |
3035 | break; | |
3036 | ||
7d9d8943 | 3037 | default: |
3139472f JM |
3038 | /* Other codes have no operands. */ |
3039 | break; | |
7d9d8943 AM |
3040 | } |
3041 | } | |
3042 | ||
3043 | /* Output a sequence of location operations. */ | |
3044 | ||
3045 | static void | |
7080f735 | 3046 | output_loc_sequence (dw_loc_descr_ref loc) |
7d9d8943 AM |
3047 | { |
3048 | for (; loc != NULL; loc = loc->dw_loc_next) | |
3049 | { | |
3050 | /* Output the opcode. */ | |
2e4b9b8c RH |
3051 | dw2_asm_output_data (1, loc->dw_loc_opc, |
3052 | "%s", dwarf_stack_op_name (loc->dw_loc_opc)); | |
7d9d8943 AM |
3053 | |
3054 | /* Output the operand(s) (if any). */ | |
3055 | output_loc_operands (loc); | |
3056 | } | |
3057 | } | |
3058 | ||
3059 | /* This routine will generate the correct assembly data for a location | |
3060 | description based on a cfi entry with a complex address. */ | |
3061 | ||
3062 | static void | |
7080f735 | 3063 | output_cfa_loc (dw_cfi_ref cfi) |
7d9d8943 AM |
3064 | { |
3065 | dw_loc_descr_ref loc; | |
3066 | unsigned long size; | |
3067 | ||
3068 | /* Output the size of the block. */ | |
3069 | loc = cfi->dw_cfi_oprnd1.dw_cfi_loc; | |
3070 | size = size_of_locs (loc); | |
2e4b9b8c | 3071 | dw2_asm_output_data_uleb128 (size, NULL); |
7d9d8943 AM |
3072 | |
3073 | /* Now output the operations themselves. */ | |
3074 | output_loc_sequence (loc); | |
3075 | } | |
3076 | ||
dd49a9ec | 3077 | /* This function builds a dwarf location descriptor sequence from |
556273e0 | 3078 | a dw_cfa_location. */ |
7d9d8943 AM |
3079 | |
3080 | static struct dw_loc_descr_struct * | |
7080f735 | 3081 | build_cfa_loc (dw_cfa_location *cfa) |
7d9d8943 AM |
3082 | { |
3083 | struct dw_loc_descr_struct *head, *tmp; | |
3084 | ||
3085 | if (cfa->indirect == 0) | |
3086 | abort (); | |
3087 | ||
3088 | if (cfa->base_offset) | |
f299afab HPN |
3089 | { |
3090 | if (cfa->reg <= 31) | |
3091 | head = new_loc_descr (DW_OP_breg0 + cfa->reg, cfa->base_offset, 0); | |
3092 | else | |
3093 | head = new_loc_descr (DW_OP_bregx, cfa->reg, cfa->base_offset); | |
3094 | } | |
3095 | else if (cfa->reg <= 31) | |
7d9d8943 | 3096 | head = new_loc_descr (DW_OP_reg0 + cfa->reg, 0, 0); |
f299afab HPN |
3097 | else |
3098 | head = new_loc_descr (DW_OP_regx, cfa->reg, 0); | |
2ad9852d | 3099 | |
7d9d8943 AM |
3100 | head->dw_loc_oprnd1.val_class = dw_val_class_const; |
3101 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
3102 | add_loc_descr (&head, tmp); | |
3103 | if (cfa->offset != 0) | |
3104 | { | |
3105 | tmp = new_loc_descr (DW_OP_plus_uconst, cfa->offset, 0); | |
3106 | add_loc_descr (&head, tmp); | |
3107 | } | |
2ad9852d | 3108 | |
7d9d8943 AM |
3109 | return head; |
3110 | } | |
3111 | ||
2ad9852d RK |
3112 | /* This function fills in aa dw_cfa_location structure from a dwarf location |
3113 | descriptor sequence. */ | |
7d9d8943 AM |
3114 | |
3115 | static void | |
7080f735 | 3116 | get_cfa_from_loc_descr (dw_cfa_location *cfa, struct dw_loc_descr_struct *loc) |
7d9d8943 | 3117 | { |
556273e0 | 3118 | struct dw_loc_descr_struct *ptr; |
7d9d8943 AM |
3119 | cfa->offset = 0; |
3120 | cfa->base_offset = 0; | |
3121 | cfa->indirect = 0; | |
3122 | cfa->reg = -1; | |
3123 | ||
3124 | for (ptr = loc; ptr != NULL; ptr = ptr->dw_loc_next) | |
3125 | { | |
3126 | enum dwarf_location_atom op = ptr->dw_loc_opc; | |
2ad9852d | 3127 | |
7d9d8943 | 3128 | switch (op) |
556273e0 | 3129 | { |
7d9d8943 AM |
3130 | case DW_OP_reg0: |
3131 | case DW_OP_reg1: | |
3132 | case DW_OP_reg2: | |
3133 | case DW_OP_reg3: | |
3134 | case DW_OP_reg4: | |
3135 | case DW_OP_reg5: | |
3136 | case DW_OP_reg6: | |
3137 | case DW_OP_reg7: | |
3138 | case DW_OP_reg8: | |
3139 | case DW_OP_reg9: | |
3140 | case DW_OP_reg10: | |
3141 | case DW_OP_reg11: | |
3142 | case DW_OP_reg12: | |
3143 | case DW_OP_reg13: | |
3144 | case DW_OP_reg14: | |
3145 | case DW_OP_reg15: | |
3146 | case DW_OP_reg16: | |
3147 | case DW_OP_reg17: | |
3148 | case DW_OP_reg18: | |
3149 | case DW_OP_reg19: | |
3150 | case DW_OP_reg20: | |
3151 | case DW_OP_reg21: | |
3152 | case DW_OP_reg22: | |
3153 | case DW_OP_reg23: | |
3154 | case DW_OP_reg24: | |
3155 | case DW_OP_reg25: | |
3156 | case DW_OP_reg26: | |
3157 | case DW_OP_reg27: | |
3158 | case DW_OP_reg28: | |
3159 | case DW_OP_reg29: | |
3160 | case DW_OP_reg30: | |
3161 | case DW_OP_reg31: | |
3162 | cfa->reg = op - DW_OP_reg0; | |
3163 | break; | |
3164 | case DW_OP_regx: | |
3165 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
3166 | break; | |
3167 | case DW_OP_breg0: | |
3168 | case DW_OP_breg1: | |
3169 | case DW_OP_breg2: | |
3170 | case DW_OP_breg3: | |
3171 | case DW_OP_breg4: | |
3172 | case DW_OP_breg5: | |
3173 | case DW_OP_breg6: | |
3174 | case DW_OP_breg7: | |
3175 | case DW_OP_breg8: | |
3176 | case DW_OP_breg9: | |
3177 | case DW_OP_breg10: | |
3178 | case DW_OP_breg11: | |
3179 | case DW_OP_breg12: | |
3180 | case DW_OP_breg13: | |
3181 | case DW_OP_breg14: | |
3182 | case DW_OP_breg15: | |
3183 | case DW_OP_breg16: | |
3184 | case DW_OP_breg17: | |
3185 | case DW_OP_breg18: | |
3186 | case DW_OP_breg19: | |
3187 | case DW_OP_breg20: | |
3188 | case DW_OP_breg21: | |
3189 | case DW_OP_breg22: | |
3190 | case DW_OP_breg23: | |
3191 | case DW_OP_breg24: | |
3192 | case DW_OP_breg25: | |
3193 | case DW_OP_breg26: | |
3194 | case DW_OP_breg27: | |
3195 | case DW_OP_breg28: | |
3196 | case DW_OP_breg29: | |
3197 | case DW_OP_breg30: | |
3198 | case DW_OP_breg31: | |
3199 | cfa->reg = op - DW_OP_breg0; | |
3200 | cfa->base_offset = ptr->dw_loc_oprnd1.v.val_int; | |
3201 | break; | |
3202 | case DW_OP_bregx: | |
3203 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
3204 | cfa->base_offset = ptr->dw_loc_oprnd2.v.val_int; | |
3205 | break; | |
3206 | case DW_OP_deref: | |
3207 | cfa->indirect = 1; | |
3208 | break; | |
3209 | case DW_OP_plus_uconst: | |
556273e0 | 3210 | cfa->offset = ptr->dw_loc_oprnd1.v.val_unsigned; |
7d9d8943 AM |
3211 | break; |
3212 | default: | |
a1f300c0 | 3213 | internal_error ("DW_LOC_OP %s not implemented\n", |
400500c4 | 3214 | dwarf_stack_op_name (ptr->dw_loc_opc)); |
7d9d8943 AM |
3215 | } |
3216 | } | |
3217 | } | |
3218 | #endif /* .debug_frame support */ | |
3219 | \f | |
3220 | /* And now, the support for symbolic debugging information. */ | |
3221 | #ifdef DWARF2_DEBUGGING_INFO | |
3222 | ||
117f9d28 | 3223 | /* .debug_str support. */ |
7080f735 AJ |
3224 | static int output_indirect_string (void **, void *); |
3225 | ||
3226 | static void dwarf2out_init (const char *); | |
3227 | static void dwarf2out_finish (const char *); | |
3228 | static void dwarf2out_define (unsigned int, const char *); | |
3229 | static void dwarf2out_undef (unsigned int, const char *); | |
3230 | static void dwarf2out_start_source_file (unsigned, const char *); | |
3231 | static void dwarf2out_end_source_file (unsigned); | |
3232 | static void dwarf2out_begin_block (unsigned, unsigned); | |
3233 | static void dwarf2out_end_block (unsigned, unsigned); | |
3234 | static bool dwarf2out_ignore_block (tree); | |
3235 | static void dwarf2out_global_decl (tree); | |
3236 | static void dwarf2out_abstract_function (tree); | |
7f905405 NB |
3237 | |
3238 | /* The debug hooks structure. */ | |
3239 | ||
54b6670a | 3240 | const struct gcc_debug_hooks dwarf2_debug_hooks = |
7f905405 NB |
3241 | { |
3242 | dwarf2out_init, | |
3243 | dwarf2out_finish, | |
3244 | dwarf2out_define, | |
3245 | dwarf2out_undef, | |
3246 | dwarf2out_start_source_file, | |
a5a42b92 NB |
3247 | dwarf2out_end_source_file, |
3248 | dwarf2out_begin_block, | |
e2a12aca | 3249 | dwarf2out_end_block, |
e1772ac0 | 3250 | dwarf2out_ignore_block, |
e2a12aca | 3251 | dwarf2out_source_line, |
653e276c | 3252 | dwarf2out_begin_prologue, |
702ada3d | 3253 | debug_nothing_int_charstar, /* end_prologue */ |
e2a12aca | 3254 | dwarf2out_end_epilogue, |
653e276c | 3255 | debug_nothing_tree, /* begin_function */ |
2b85879e NB |
3256 | debug_nothing_int, /* end_function */ |
3257 | dwarf2out_decl, /* function_decl */ | |
3258 | dwarf2out_global_decl, | |
e1772ac0 NB |
3259 | debug_nothing_tree, /* deferred_inline_function */ |
3260 | /* The DWARF 2 backend tries to reduce debugging bloat by not | |
3261 | emitting the abstract description of inline functions until | |
3262 | something tries to reference them. */ | |
3263 | dwarf2out_abstract_function, /* outlining_inline_function */ | |
33b49800 GK |
3264 | debug_nothing_rtx, /* label */ |
3265 | debug_nothing_int /* handle_pch */ | |
7f905405 | 3266 | }; |
17211ab5 | 3267 | #endif |
7f905405 | 3268 | \f |
7d9d8943 AM |
3269 | /* NOTE: In the comments in this file, many references are made to |
3270 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
3271 | throughout the remainder of this file. */ | |
3272 | ||
3273 | /* An internal representation of the DWARF output is built, and then | |
3274 | walked to generate the DWARF debugging info. The walk of the internal | |
3275 | representation is done after the entire program has been compiled. | |
3276 | The types below are used to describe the internal representation. */ | |
3277 | ||
3278 | /* Various DIE's use offsets relative to the beginning of the | |
3279 | .debug_info section to refer to each other. */ | |
3280 | ||
3281 | typedef long int dw_offset; | |
3282 | ||
3283 | /* Define typedefs here to avoid circular dependencies. */ | |
3284 | ||
3285 | typedef struct dw_attr_struct *dw_attr_ref; | |
3286 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
3287 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
3288 | typedef struct pubname_struct *pubname_ref; | |
a20612aa | 3289 | typedef struct dw_ranges_struct *dw_ranges_ref; |
7d9d8943 AM |
3290 | |
3291 | /* Each entry in the line_info_table maintains the file and | |
3292 | line number associated with the label generated for that | |
3293 | entry. The label gives the PC value associated with | |
3294 | the line number entry. */ | |
3295 | ||
17211ab5 | 3296 | typedef struct dw_line_info_struct GTY(()) |
7d9d8943 AM |
3297 | { |
3298 | unsigned long dw_file_num; | |
3299 | unsigned long dw_line_num; | |
3300 | } | |
3301 | dw_line_info_entry; | |
3302 | ||
3303 | /* Line information for functions in separate sections; each one gets its | |
3304 | own sequence. */ | |
17211ab5 | 3305 | typedef struct dw_separate_line_info_struct GTY(()) |
7d9d8943 AM |
3306 | { |
3307 | unsigned long dw_file_num; | |
3308 | unsigned long dw_line_num; | |
3309 | unsigned long function; | |
3310 | } | |
3311 | dw_separate_line_info_entry; | |
3312 | ||
3313 | /* Each DIE attribute has a field specifying the attribute kind, | |
3314 | a link to the next attribute in the chain, and an attribute value. | |
3315 | Attributes are typically linked below the DIE they modify. */ | |
3316 | ||
17211ab5 | 3317 | typedef struct dw_attr_struct GTY(()) |
7d9d8943 AM |
3318 | { |
3319 | enum dwarf_attribute dw_attr; | |
3320 | dw_attr_ref dw_attr_next; | |
3321 | dw_val_node dw_attr_val; | |
3322 | } | |
3323 | dw_attr_node; | |
3324 | ||
3325 | /* The Debugging Information Entry (DIE) structure */ | |
3326 | ||
17211ab5 | 3327 | typedef struct die_struct GTY(()) |
7d9d8943 AM |
3328 | { |
3329 | enum dwarf_tag die_tag; | |
881c6935 | 3330 | char *die_symbol; |
7d9d8943 AM |
3331 | dw_attr_ref die_attr; |
3332 | dw_die_ref die_parent; | |
3333 | dw_die_ref die_child; | |
3334 | dw_die_ref die_sib; | |
3335 | dw_offset die_offset; | |
3336 | unsigned long die_abbrev; | |
1bfb5f8f | 3337 | int die_mark; |
7d9d8943 AM |
3338 | } |
3339 | die_node; | |
3340 | ||
3341 | /* The pubname structure */ | |
3342 | ||
17211ab5 | 3343 | typedef struct pubname_struct GTY(()) |
7d9d8943 AM |
3344 | { |
3345 | dw_die_ref die; | |
556273e0 | 3346 | char *name; |
7d9d8943 AM |
3347 | } |
3348 | pubname_entry; | |
3349 | ||
17211ab5 | 3350 | struct dw_ranges_struct GTY(()) |
a20612aa RH |
3351 | { |
3352 | int block_num; | |
3353 | }; | |
3354 | ||
7d9d8943 | 3355 | /* The limbo die list structure. */ |
17211ab5 | 3356 | typedef struct limbo_die_struct GTY(()) |
7d9d8943 AM |
3357 | { |
3358 | dw_die_ref die; | |
54ba1f0d | 3359 | tree created_for; |
7d9d8943 AM |
3360 | struct limbo_die_struct *next; |
3361 | } | |
3362 | limbo_die_node; | |
3363 | ||
3364 | /* How to start an assembler comment. */ | |
3365 | #ifndef ASM_COMMENT_START | |
3366 | #define ASM_COMMENT_START ";#" | |
3367 | #endif | |
3368 | ||
cc2902df | 3369 | /* Define a macro which returns nonzero for a TYPE_DECL which was |
7d9d8943 AM |
3370 | implicitly generated for a tagged type. |
3371 | ||
3372 | Note that unlike the gcc front end (which generates a NULL named | |
3373 | TYPE_DECL node for each complete tagged type, each array type, and | |
3374 | each function type node created) the g++ front end generates a | |
3375 | _named_ TYPE_DECL node for each tagged type node created. | |
3376 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
3377 | generate a DW_TAG_typedef DIE for them. */ | |
3378 | ||
3379 | #define TYPE_DECL_IS_STUB(decl) \ | |
3380 | (DECL_NAME (decl) == NULL_TREE \ | |
3381 | || (DECL_ARTIFICIAL (decl) \ | |
3382 | && is_tagged_type (TREE_TYPE (decl)) \ | |
3383 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ | |
3384 | /* This is necessary for stub decls that \ | |
3385 | appear in nested inline functions. */ \ | |
3386 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
3387 | && (decl_ultimate_origin (decl) \ | |
3388 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3389 | ||
3390 | /* Information concerning the compilation unit's programming | |
3391 | language, and compiler version. */ | |
3392 | ||
7d9d8943 | 3393 | /* Fixed size portion of the DWARF compilation unit header. */ |
9eb0ef7a KB |
3394 | #define DWARF_COMPILE_UNIT_HEADER_SIZE \ |
3395 | (DWARF_INITIAL_LENGTH_SIZE + DWARF_OFFSET_SIZE + 3) | |
7d9d8943 | 3396 | |
7d9d8943 AM |
3397 | /* Fixed size portion of public names info. */ |
3398 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
3399 | ||
3400 | /* Fixed size portion of the address range info. */ | |
3401 | #define DWARF_ARANGES_HEADER_SIZE \ | |
c583e7c3 KB |
3402 | (DWARF_ROUND (DWARF_INITIAL_LENGTH_SIZE + DWARF_OFFSET_SIZE + 4, \ |
3403 | DWARF2_ADDR_SIZE * 2) \ | |
3404 | - DWARF_INITIAL_LENGTH_SIZE) | |
7d9d8943 AM |
3405 | |
3406 | /* Size of padding portion in the address range info. It must be | |
3407 | aligned to twice the pointer size. */ | |
3408 | #define DWARF_ARANGES_PAD_SIZE \ | |
c583e7c3 KB |
3409 | (DWARF_ROUND (DWARF_INITIAL_LENGTH_SIZE + DWARF_OFFSET_SIZE + 4, \ |
3410 | DWARF2_ADDR_SIZE * 2) \ | |
3411 | - (DWARF_INITIAL_LENGTH_SIZE + DWARF_OFFSET_SIZE + 4)) | |
7d9d8943 | 3412 | |
9d147085 | 3413 | /* Use assembler line directives if available. */ |
7d9d8943 | 3414 | #ifndef DWARF2_ASM_LINE_DEBUG_INFO |
9d147085 RH |
3415 | #ifdef HAVE_AS_DWARF2_DEBUG_LINE |
3416 | #define DWARF2_ASM_LINE_DEBUG_INFO 1 | |
3417 | #else | |
7d9d8943 AM |
3418 | #define DWARF2_ASM_LINE_DEBUG_INFO 0 |
3419 | #endif | |
9d147085 | 3420 | #endif |
7d9d8943 | 3421 | |
7d9d8943 AM |
3422 | /* Minimum line offset in a special line info. opcode. |
3423 | This value was chosen to give a reasonable range of values. */ | |
3424 | #define DWARF_LINE_BASE -10 | |
3425 | ||
a1f300c0 | 3426 | /* First special line opcode - leave room for the standard opcodes. */ |
7d9d8943 AM |
3427 | #define DWARF_LINE_OPCODE_BASE 10 |
3428 | ||
3429 | /* Range of line offsets in a special line info. opcode. */ | |
3430 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
3431 | ||
3432 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
3433 | In the present implementation, we do not mark any lines as | |
3434 | the beginning of a source statement, because that information | |
3435 | is not made available by the GCC front-end. */ | |
3436 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
3437 | ||
c1b50e49 | 3438 | #ifdef DWARF2_DEBUGGING_INFO |
7d9d8943 AM |
3439 | /* This location is used by calc_die_sizes() to keep track |
3440 | the offset of each DIE within the .debug_info section. */ | |
3441 | static unsigned long next_die_offset; | |
c1b50e49 | 3442 | #endif |
7d9d8943 AM |
3443 | |
3444 | /* Record the root of the DIE's built for the current compilation unit. */ | |
17211ab5 | 3445 | static GTY(()) dw_die_ref comp_unit_die; |
7d9d8943 AM |
3446 | |
3447 | /* A list of DIEs with a NULL parent waiting to be relocated. */ | |
17211ab5 | 3448 | static GTY(()) limbo_die_node *limbo_die_list; |
7d9d8943 | 3449 | |
981975b6 | 3450 | /* Filenames referenced by this compilation unit. */ |
c4274b22 | 3451 | static GTY(()) varray_type file_table; |
73c68f61 | 3452 | static GTY(()) varray_type file_table_emitted; |
c4274b22 | 3453 | static GTY(()) size_t file_table_last_lookup_index; |
2e18bbae | 3454 | |
7d9d8943 AM |
3455 | /* A pointer to the base of a table of references to DIE's that describe |
3456 | declarations. The table is indexed by DECL_UID() which is a unique | |
3457 | number identifying each decl. */ | |
17211ab5 | 3458 | static GTY((length ("decl_die_table_allocated"))) dw_die_ref *decl_die_table; |
7d9d8943 AM |
3459 | |
3460 | /* Number of elements currently allocated for the decl_die_table. */ | |
c2e9147c | 3461 | static GTY(()) unsigned decl_die_table_allocated; |
7d9d8943 AM |
3462 | |
3463 | /* Number of elements in decl_die_table currently in use. */ | |
c2e9147c | 3464 | static GTY(()) unsigned decl_die_table_in_use; |
7d9d8943 AM |
3465 | |
3466 | /* Size (in elements) of increments by which we may expand the | |
3467 | decl_die_table. */ | |
3468 | #define DECL_DIE_TABLE_INCREMENT 256 | |
3469 | ||
7d9d8943 AM |
3470 | /* A pointer to the base of a list of references to DIE's that |
3471 | are uniquely identified by their tag, presence/absence of | |
3472 | children DIE's, and list of attribute/value pairs. */ | |
7080f735 | 3473 | static GTY((length ("abbrev_die_table_allocated"))) |
17211ab5 | 3474 | dw_die_ref *abbrev_die_table; |
7d9d8943 AM |
3475 | |
3476 | /* Number of elements currently allocated for abbrev_die_table. */ | |
c2e9147c | 3477 | static GTY(()) unsigned abbrev_die_table_allocated; |
7d9d8943 AM |
3478 | |
3479 | /* Number of elements in type_die_table currently in use. */ | |
c2e9147c | 3480 | static GTY(()) unsigned abbrev_die_table_in_use; |
7d9d8943 AM |
3481 | |
3482 | /* Size (in elements) of increments by which we may expand the | |
3483 | abbrev_die_table. */ | |
3484 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
3485 | ||
3486 | /* A pointer to the base of a table that contains line information | |
3487 | for each source code line in .text in the compilation unit. */ | |
7080f735 | 3488 | static GTY((length ("line_info_table_allocated"))) |
17211ab5 | 3489 | dw_line_info_ref line_info_table; |
7d9d8943 AM |
3490 | |
3491 | /* Number of elements currently allocated for line_info_table. */ | |
c2e9147c | 3492 | static GTY(()) unsigned line_info_table_allocated; |
7d9d8943 | 3493 | |
17211ab5 | 3494 | /* Number of elements in line_info_table currently in use. */ |
c2e9147c | 3495 | static GTY(()) unsigned line_info_table_in_use; |
7d9d8943 AM |
3496 | |
3497 | /* A pointer to the base of a table that contains line information | |
3498 | for each source code line outside of .text in the compilation unit. */ | |
17211ab5 GK |
3499 | static GTY ((length ("separate_line_info_table_allocated"))) |
3500 | dw_separate_line_info_ref separate_line_info_table; | |
7d9d8943 AM |
3501 | |
3502 | /* Number of elements currently allocated for separate_line_info_table. */ | |
c2e9147c | 3503 | static GTY(()) unsigned separate_line_info_table_allocated; |
7d9d8943 | 3504 | |
17211ab5 | 3505 | /* Number of elements in separate_line_info_table currently in use. */ |
c2e9147c | 3506 | static GTY(()) unsigned separate_line_info_table_in_use; |
7d9d8943 AM |
3507 | |
3508 | /* Size (in elements) of increments by which we may expand the | |
3509 | line_info_table. */ | |
3510 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
3511 | ||
3512 | /* A pointer to the base of a table that contains a list of publicly | |
3513 | accessible names. */ | |
17211ab5 | 3514 | static GTY ((length ("pubname_table_allocated"))) pubname_ref pubname_table; |
7d9d8943 AM |
3515 | |
3516 | /* Number of elements currently allocated for pubname_table. */ | |
c2e9147c | 3517 | static GTY(()) unsigned pubname_table_allocated; |
7d9d8943 AM |
3518 | |
3519 | /* Number of elements in pubname_table currently in use. */ | |
c2e9147c | 3520 | static GTY(()) unsigned pubname_table_in_use; |
7d9d8943 AM |
3521 | |
3522 | /* Size (in elements) of increments by which we may expand the | |
3523 | pubname_table. */ | |
3524 | #define PUBNAME_TABLE_INCREMENT 64 | |
3525 | ||
a20612aa | 3526 | /* Array of dies for which we should generate .debug_arange info. */ |
17211ab5 | 3527 | static GTY((length ("arange_table_allocated"))) dw_die_ref *arange_table; |
7d9d8943 AM |
3528 | |
3529 | /* Number of elements currently allocated for arange_table. */ | |
c2e9147c | 3530 | static GTY(()) unsigned arange_table_allocated; |
7d9d8943 AM |
3531 | |
3532 | /* Number of elements in arange_table currently in use. */ | |
c2e9147c | 3533 | static GTY(()) unsigned arange_table_in_use; |
7d9d8943 AM |
3534 | |
3535 | /* Size (in elements) of increments by which we may expand the | |
3536 | arange_table. */ | |
3537 | #define ARANGE_TABLE_INCREMENT 64 | |
3538 | ||
a20612aa | 3539 | /* Array of dies for which we should generate .debug_ranges info. */ |
17211ab5 | 3540 | static GTY ((length ("ranges_table_allocated"))) dw_ranges_ref ranges_table; |
a20612aa RH |
3541 | |
3542 | /* Number of elements currently allocated for ranges_table. */ | |
c2e9147c | 3543 | static GTY(()) unsigned ranges_table_allocated; |
a20612aa RH |
3544 | |
3545 | /* Number of elements in ranges_table currently in use. */ | |
c2e9147c | 3546 | static GTY(()) unsigned ranges_table_in_use; |
a20612aa RH |
3547 | |
3548 | /* Size (in elements) of increments by which we may expand the | |
3549 | ranges_table. */ | |
3550 | #define RANGES_TABLE_INCREMENT 64 | |
3551 | ||
63e46568 | 3552 | /* Whether we have location lists that need outputting */ |
c2e9147c | 3553 | static GTY(()) unsigned have_location_lists; |
63e46568 | 3554 | |
c2e9147c | 3555 | #ifdef DWARF2_DEBUGGING_INFO |
7d9d8943 AM |
3556 | /* Record whether the function being analyzed contains inlined functions. */ |
3557 | static int current_function_has_inlines; | |
c1b50e49 | 3558 | #endif |
7d9d8943 AM |
3559 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
3560 | static int comp_unit_has_inlines; | |
3561 | #endif | |
3562 | ||
e0bb17a8 | 3563 | /* Number of file tables emitted in maybe_emit_file(). */ |
c2e9147c GK |
3564 | static GTY(()) int emitcount = 0; |
3565 | ||
71c0e7fc | 3566 | /* Number of internal labels generated by gen_internal_sym(). */ |
c2e9147c GK |
3567 | static GTY(()) int label_num; |
3568 | ||
17211ab5 GK |
3569 | #ifdef DWARF2_DEBUGGING_INFO |
3570 | ||
7d9d8943 AM |
3571 | /* Forward declarations for functions defined in this file. */ |
3572 | ||
7080f735 AJ |
3573 | static int is_pseudo_reg (rtx); |
3574 | static tree type_main_variant (tree); | |
3575 | static int is_tagged_type (tree); | |
3576 | static const char *dwarf_tag_name (unsigned); | |
3577 | static const char *dwarf_attr_name (unsigned); | |
3578 | static const char *dwarf_form_name (unsigned); | |
7d9d8943 | 3579 | #if 0 |
7080f735 | 3580 | static const char *dwarf_type_encoding_name (unsigned); |
7d9d8943 | 3581 | #endif |
7080f735 AJ |
3582 | static tree decl_ultimate_origin (tree); |
3583 | static tree block_ultimate_origin (tree); | |
3584 | static tree decl_class_context (tree); | |
3585 | static void add_dwarf_attr (dw_die_ref, dw_attr_ref); | |
3586 | static inline enum dw_val_class AT_class (dw_attr_ref); | |
3587 | static void add_AT_flag (dw_die_ref, enum dwarf_attribute, unsigned); | |
3588 | static inline unsigned AT_flag (dw_attr_ref); | |
3589 | static void add_AT_int (dw_die_ref, enum dwarf_attribute, long); | |
3590 | static inline long int AT_int (dw_attr_ref); | |
3591 | static void add_AT_unsigned (dw_die_ref, enum dwarf_attribute, unsigned long); | |
3592 | static inline unsigned long AT_unsigned (dw_attr_ref); | |
3593 | static void add_AT_long_long (dw_die_ref, enum dwarf_attribute, unsigned long, | |
3594 | unsigned long); | |
3595 | static void add_AT_float (dw_die_ref, enum dwarf_attribute, unsigned, long *); | |
3596 | static hashval_t debug_str_do_hash (const void *); | |
3597 | static int debug_str_eq (const void *, const void *); | |
3598 | static void add_AT_string (dw_die_ref, enum dwarf_attribute, const char *); | |
3599 | static inline const char *AT_string (dw_attr_ref); | |
3600 | static int AT_string_form (dw_attr_ref); | |
3601 | static void add_AT_die_ref (dw_die_ref, enum dwarf_attribute, dw_die_ref); | |
3602 | static inline dw_die_ref AT_ref (dw_attr_ref); | |
3603 | static inline int AT_ref_external (dw_attr_ref); | |
3604 | static inline void set_AT_ref_external (dw_attr_ref, int); | |
3605 | static void add_AT_fde_ref (dw_die_ref, enum dwarf_attribute, unsigned); | |
3606 | static void add_AT_loc (dw_die_ref, enum dwarf_attribute, dw_loc_descr_ref); | |
3607 | static inline dw_loc_descr_ref AT_loc (dw_attr_ref); | |
3608 | static void add_AT_loc_list (dw_die_ref, enum dwarf_attribute, | |
3609 | dw_loc_list_ref); | |
3610 | static inline dw_loc_list_ref AT_loc_list (dw_attr_ref); | |
3611 | static void add_AT_addr (dw_die_ref, enum dwarf_attribute, rtx); | |
3612 | static inline rtx AT_addr (dw_attr_ref); | |
3613 | static void add_AT_lbl_id (dw_die_ref, enum dwarf_attribute, const char *); | |
3614 | static void add_AT_lbl_offset (dw_die_ref, enum dwarf_attribute, const char *); | |
3615 | static void add_AT_offset (dw_die_ref, enum dwarf_attribute, unsigned long); | |
3616 | static void add_AT_range_list (dw_die_ref, enum dwarf_attribute, | |
3617 | unsigned long); | |
3618 | static inline const char *AT_lbl (dw_attr_ref); | |
3619 | static dw_attr_ref get_AT (dw_die_ref, enum dwarf_attribute); | |
3620 | static const char *get_AT_low_pc (dw_die_ref); | |
3621 | static const char *get_AT_hi_pc (dw_die_ref); | |
3622 | static const char *get_AT_string (dw_die_ref, enum dwarf_attribute); | |
3623 | static int get_AT_flag (dw_die_ref, enum dwarf_attribute); | |
3624 | static unsigned get_AT_unsigned (dw_die_ref, enum dwarf_attribute); | |
3625 | static inline dw_die_ref get_AT_ref (dw_die_ref, enum dwarf_attribute); | |
3626 | static bool is_c_family (void); | |
3627 | static bool is_cxx (void); | |
3628 | static bool is_java (void); | |
3629 | static bool is_fortran (void); | |
3630 | static bool is_ada (void); | |
3631 | static void remove_AT (dw_die_ref, enum dwarf_attribute); | |
3632 | static inline void free_die (dw_die_ref); | |
3633 | static void remove_children (dw_die_ref); | |
3634 | static void add_child_die (dw_die_ref, dw_die_ref); | |
3635 | static dw_die_ref new_die (enum dwarf_tag, dw_die_ref, tree); | |
3636 | static dw_die_ref lookup_type_die (tree); | |
3637 | static void equate_type_number_to_die (tree, dw_die_ref); | |
3638 | static dw_die_ref lookup_decl_die (tree); | |
3639 | static void equate_decl_number_to_die (tree, dw_die_ref); | |
3640 | static void print_spaces (FILE *); | |
3641 | static void print_die (dw_die_ref, FILE *); | |
3642 | static void print_dwarf_line_table (FILE *); | |
3643 | static void reverse_die_lists (dw_die_ref); | |
3644 | static void reverse_all_dies (dw_die_ref); | |
3645 | static dw_die_ref push_new_compile_unit (dw_die_ref, dw_die_ref); | |
3646 | static dw_die_ref pop_compile_unit (dw_die_ref); | |
3647 | static void loc_checksum (dw_loc_descr_ref, struct md5_ctx *); | |
3648 | static void attr_checksum (dw_attr_ref, struct md5_ctx *, int *); | |
3649 | static void die_checksum (dw_die_ref, struct md5_ctx *, int *); | |
3650 | static int same_loc_p (dw_loc_descr_ref, dw_loc_descr_ref, int *); | |
3651 | static int same_dw_val_p (dw_val_node *, dw_val_node *, int *); | |
3652 | static int same_attr_p (dw_attr_ref, dw_attr_ref, int *); | |
3653 | static int same_die_p (dw_die_ref, dw_die_ref, int *); | |
3654 | static int same_die_p_wrap (dw_die_ref, dw_die_ref); | |
3655 | static void compute_section_prefix (dw_die_ref); | |
3656 | static int is_type_die (dw_die_ref); | |
3657 | static int is_comdat_die (dw_die_ref); | |
3658 | static int is_symbol_die (dw_die_ref); | |
3659 | static void assign_symbol_names (dw_die_ref); | |
3660 | static void break_out_includes (dw_die_ref); | |
3661 | static hashval_t htab_cu_hash (const void *); | |
3662 | static int htab_cu_eq (const void *, const void *); | |
3663 | static void htab_cu_del (void *); | |
3664 | static int check_duplicate_cu (dw_die_ref, htab_t, unsigned *); | |
3665 | static void record_comdat_symbol_number (dw_die_ref, htab_t, unsigned); | |
3666 | static void add_sibling_attributes (dw_die_ref); | |
3667 | static void build_abbrev_table (dw_die_ref); | |
3668 | static void output_location_lists (dw_die_ref); | |
3669 | static int constant_size (long unsigned); | |
3670 | static unsigned long size_of_die (dw_die_ref); | |
3671 | static void calc_die_sizes (dw_die_ref); | |
3672 | static void mark_dies (dw_die_ref); | |
3673 | static void unmark_dies (dw_die_ref); | |
3674 | static void unmark_all_dies (dw_die_ref); | |
3675 | static unsigned long size_of_pubnames (void); | |
3676 | static unsigned long size_of_aranges (void); | |
3677 | static enum dwarf_form value_format (dw_attr_ref); | |
3678 | static void output_value_format (dw_attr_ref); | |
3679 | static void output_abbrev_section (void); | |
3680 | static void output_die_symbol (dw_die_ref); | |
3681 | static void output_die (dw_die_ref); | |
3682 | static void output_compilation_unit_header (void); | |
3683 | static void output_comp_unit (dw_die_ref, int); | |
3684 | static const char *dwarf2_name (tree, int); | |
3685 | static void add_pubname (tree, dw_die_ref); | |
3686 | static void output_pubnames (void); | |
3687 | static void add_arange (tree, dw_die_ref); | |
3688 | static void output_aranges (void); | |
3689 | static unsigned int add_ranges (tree); | |
3690 | static void output_ranges (void); | |
3691 | static void output_line_info (void); | |
3692 | static void output_file_names (void); | |
3693 | static dw_die_ref base_type_die (tree); | |
3694 | static tree root_type (tree); | |
3695 | static int is_base_type (tree); | |
3696 | static bool is_ada_subrange_type (tree); | |
3697 | static dw_die_ref subrange_type_die (tree); | |
3698 | static dw_die_ref modified_type_die (tree, int, int, dw_die_ref); | |
3699 | static int type_is_enum (tree); | |
3700 | static unsigned int reg_number (rtx); | |
3701 | static dw_loc_descr_ref reg_loc_descriptor (rtx); | |
3702 | static dw_loc_descr_ref one_reg_loc_descriptor (unsigned int); | |
3703 | static dw_loc_descr_ref multiple_reg_loc_descriptor (rtx, rtx); | |
3704 | static dw_loc_descr_ref int_loc_descriptor (HOST_WIDE_INT); | |
3705 | static dw_loc_descr_ref based_loc_descr (unsigned, long); | |
3706 | static int is_based_loc (rtx); | |
3707 | static dw_loc_descr_ref mem_loc_descriptor (rtx, enum machine_mode mode); | |
3708 | static dw_loc_descr_ref concat_loc_descriptor (rtx, rtx); | |
3709 | static dw_loc_descr_ref loc_descriptor (rtx); | |
3710 | static dw_loc_descr_ref loc_descriptor_from_tree (tree, int); | |
3711 | static HOST_WIDE_INT ceiling (HOST_WIDE_INT, unsigned int); | |
3712 | static tree field_type (tree); | |
3713 | static unsigned int simple_type_align_in_bits (tree); | |
3714 | static unsigned int simple_decl_align_in_bits (tree); | |
3715 | static unsigned HOST_WIDE_INT simple_type_size_in_bits (tree); | |
3716 | static HOST_WIDE_INT field_byte_offset (tree); | |
3717 | static void add_AT_location_description (dw_die_ref, enum dwarf_attribute, | |
3718 | dw_loc_descr_ref); | |
3719 | static void add_data_member_location_attribute (dw_die_ref, tree); | |
3720 | static void add_const_value_attribute (dw_die_ref, rtx); | |
3721 | static rtx rtl_for_decl_location (tree); | |
3722 | static void add_location_or_const_value_attribute (dw_die_ref, tree); | |
3723 | static void tree_add_const_value_attribute (dw_die_ref, tree); | |
3724 | static void add_name_attribute (dw_die_ref, const char *); | |
3725 | static void add_comp_dir_attribute (dw_die_ref); | |
3726 | static void add_bound_info (dw_die_ref, enum dwarf_attribute, tree); | |
3727 | static void add_subscript_info (dw_die_ref, tree); | |
3728 | static void add_byte_size_attribute (dw_die_ref, tree); | |
3729 | static void add_bit_offset_attribute (dw_die_ref, tree); | |
3730 | static void add_bit_size_attribute (dw_die_ref, tree); | |
3731 | static void add_prototyped_attribute (dw_die_ref, tree); | |
3732 | static void add_abstract_origin_attribute (dw_die_ref, tree); | |
3733 | static void add_pure_or_virtual_attribute (dw_die_ref, tree); | |
3734 | static void add_src_coords_attributes (dw_die_ref, tree); | |
3735 | static void add_name_and_src_coords_attributes (dw_die_ref, tree); | |
3736 | static void push_decl_scope (tree); | |
3737 | static void pop_decl_scope (void); | |
3738 | static dw_die_ref scope_die_for (tree, dw_die_ref); | |
3739 | static inline int local_scope_p (dw_die_ref); | |
3740 | static inline int class_scope_p (dw_die_ref); | |
3741 | static void add_type_attribute (dw_die_ref, tree, int, int, dw_die_ref); | |
3742 | static const char *type_tag (tree); | |
3743 | static tree member_declared_type (tree); | |
7d9d8943 | 3744 | #if 0 |
7080f735 | 3745 | static const char *decl_start_label (tree); |
7d9d8943 | 3746 | #endif |
7080f735 AJ |
3747 | static void gen_array_type_die (tree, dw_die_ref); |
3748 | static void gen_set_type_die (tree, dw_die_ref); | |
7d9d8943 | 3749 | #if 0 |
7080f735 | 3750 | static void gen_entry_point_die (tree, dw_die_ref); |
7d9d8943 | 3751 | #endif |
7080f735 AJ |
3752 | static void gen_inlined_enumeration_type_die (tree, dw_die_ref); |
3753 | static void gen_inlined_structure_type_die (tree, dw_die_ref); | |
3754 | static void gen_inlined_union_type_die (tree, dw_die_ref); | |
3755 | static void gen_enumeration_type_die (tree, dw_die_ref); | |
3756 | static dw_die_ref gen_formal_parameter_die (tree, dw_die_ref); | |
3757 | static void gen_unspecified_parameters_die (tree, dw_die_ref); | |
3758 | static void gen_formal_types_die (tree, dw_die_ref); | |
3759 | static void gen_subprogram_die (tree, dw_die_ref); | |
3760 | static void gen_variable_die (tree, dw_die_ref); | |
3761 | static void gen_label_die (tree, dw_die_ref); | |
3762 | static void gen_lexical_block_die (tree, dw_die_ref, int); | |
3763 | static void gen_inlined_subroutine_die (tree, dw_die_ref, int); | |
3764 | static void gen_field_die (tree, dw_die_ref); | |
3765 | static void gen_ptr_to_mbr_type_die (tree, dw_die_ref); | |
3766 | static dw_die_ref gen_compile_unit_die (const char *); | |
3767 | static void gen_string_type_die (tree, dw_die_ref); | |
3768 | static void gen_inheritance_die (tree, tree, dw_die_ref); | |
3769 | static void gen_member_die (tree, dw_die_ref); | |
3770 | static void gen_struct_or_union_type_die (tree, dw_die_ref); | |
3771 | static void gen_subroutine_type_die (tree, dw_die_ref); | |
3772 | static void gen_typedef_die (tree, dw_die_ref); | |
3773 | static void gen_type_die (tree, dw_die_ref); | |
3774 | static void gen_tagged_type_instantiation_die (tree, dw_die_ref); | |
3775 | static void gen_block_die (tree, dw_die_ref, int); | |
3776 | static void decls_for_scope (tree, dw_die_ref, int); | |
3777 | static int is_redundant_typedef (tree); | |
3778 | static void gen_decl_die (tree, dw_die_ref); | |
3779 | static unsigned lookup_filename (const char *); | |
3780 | static void init_file_table (void); | |
3781 | static void retry_incomplete_types (void); | |
3782 | static void gen_type_die_for_member (tree, tree, dw_die_ref); | |
3783 | static void splice_child_die (dw_die_ref, dw_die_ref); | |
3784 | static int file_info_cmp (const void *, const void *); | |
3785 | static dw_loc_list_ref new_loc_list (dw_loc_descr_ref, const char *, | |
3786 | const char *, const char *, unsigned); | |
3787 | static void add_loc_descr_to_loc_list (dw_loc_list_ref *, dw_loc_descr_ref, | |
3788 | const char *, const char *, | |
3789 | const char *); | |
3790 | static void output_loc_list (dw_loc_list_ref); | |
3791 | static char *gen_internal_sym (const char *); | |
3792 | ||
3793 | static void prune_unmark_dies (dw_die_ref); | |
3794 | static void prune_unused_types_mark (dw_die_ref, int); | |
3795 | static void prune_unused_types_walk (dw_die_ref); | |
3796 | static void prune_unused_types_walk_attribs (dw_die_ref); | |
3797 | static void prune_unused_types_prune (dw_die_ref); | |
3798 | static void prune_unused_types (void); | |
3799 | static int maybe_emit_file (int); | |
73c68f61 | 3800 | |
7d9d8943 AM |
3801 | /* Section names used to hold DWARF debugging information. */ |
3802 | #ifndef DEBUG_INFO_SECTION | |
3803 | #define DEBUG_INFO_SECTION ".debug_info" | |
3804 | #endif | |
9d2f2c45 RH |
3805 | #ifndef DEBUG_ABBREV_SECTION |
3806 | #define DEBUG_ABBREV_SECTION ".debug_abbrev" | |
7d9d8943 | 3807 | #endif |
9d2f2c45 RH |
3808 | #ifndef DEBUG_ARANGES_SECTION |
3809 | #define DEBUG_ARANGES_SECTION ".debug_aranges" | |
7d9d8943 | 3810 | #endif |
9d2f2c45 RH |
3811 | #ifndef DEBUG_MACINFO_SECTION |
3812 | #define DEBUG_MACINFO_SECTION ".debug_macinfo" | |
7d9d8943 AM |
3813 | #endif |
3814 | #ifndef DEBUG_LINE_SECTION | |
3815 | #define DEBUG_LINE_SECTION ".debug_line" | |
3816 | #endif | |
9d2f2c45 RH |
3817 | #ifndef DEBUG_LOC_SECTION |
3818 | #define DEBUG_LOC_SECTION ".debug_loc" | |
7d9d8943 | 3819 | #endif |
9d2f2c45 RH |
3820 | #ifndef DEBUG_PUBNAMES_SECTION |
3821 | #define DEBUG_PUBNAMES_SECTION ".debug_pubnames" | |
7d9d8943 | 3822 | #endif |
9d2f2c45 RH |
3823 | #ifndef DEBUG_STR_SECTION |
3824 | #define DEBUG_STR_SECTION ".debug_str" | |
7d9d8943 | 3825 | #endif |
a20612aa RH |
3826 | #ifndef DEBUG_RANGES_SECTION |
3827 | #define DEBUG_RANGES_SECTION ".debug_ranges" | |
3828 | #endif | |
7d9d8943 AM |
3829 | |
3830 | /* Standard ELF section names for compiled code and data. */ | |
f99ffb60 RH |
3831 | #ifndef TEXT_SECTION_NAME |
3832 | #define TEXT_SECTION_NAME ".text" | |
7d9d8943 AM |
3833 | #endif |
3834 | ||
9eb4015a | 3835 | /* Section flags for .debug_str section. */ |
9eb4015a | 3836 | #define DEBUG_STR_SECTION_FLAGS \ |
5d4856a0 | 3837 | (HAVE_GAS_SHF_MERGE && flag_merge_constants \ |
b0c242c0 AM |
3838 | ? SECTION_DEBUG | SECTION_MERGE | SECTION_STRINGS | 1 \ |
3839 | : SECTION_DEBUG) | |
9eb4015a | 3840 | |
7d9d8943 | 3841 | /* Labels we insert at beginning sections we can reference instead of |
556273e0 | 3842 | the section names themselves. */ |
7d9d8943 AM |
3843 | |
3844 | #ifndef TEXT_SECTION_LABEL | |
9d2f2c45 | 3845 | #define TEXT_SECTION_LABEL "Ltext" |
7d9d8943 AM |
3846 | #endif |
3847 | #ifndef DEBUG_LINE_SECTION_LABEL | |
9d2f2c45 | 3848 | #define DEBUG_LINE_SECTION_LABEL "Ldebug_line" |
7d9d8943 AM |
3849 | #endif |
3850 | #ifndef DEBUG_INFO_SECTION_LABEL | |
9d2f2c45 | 3851 | #define DEBUG_INFO_SECTION_LABEL "Ldebug_info" |
7d9d8943 | 3852 | #endif |
9d2f2c45 RH |
3853 | #ifndef DEBUG_ABBREV_SECTION_LABEL |
3854 | #define DEBUG_ABBREV_SECTION_LABEL "Ldebug_abbrev" | |
7d9d8943 | 3855 | #endif |
9d2f2c45 RH |
3856 | #ifndef DEBUG_LOC_SECTION_LABEL |
3857 | #define DEBUG_LOC_SECTION_LABEL "Ldebug_loc" | |
63e46568 | 3858 | #endif |
2bee6045 JJ |
3859 | #ifndef DEBUG_RANGES_SECTION_LABEL |
3860 | #define DEBUG_RANGES_SECTION_LABEL "Ldebug_ranges" | |
3861 | #endif | |
84a5b4f8 DB |
3862 | #ifndef DEBUG_MACINFO_SECTION_LABEL |
3863 | #define DEBUG_MACINFO_SECTION_LABEL "Ldebug_macinfo" | |
3864 | #endif | |
a20612aa | 3865 | |
7d9d8943 AM |
3866 | /* Definitions of defaults for formats and names of various special |
3867 | (artificial) labels which may be generated within this file (when the -g | |
3868 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
3869 | If necessary, these may be overridden from within the tm.h file, but | |
3870 | typically, overriding these defaults is unnecessary. */ | |
3871 | ||
3872 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3873 | static char text_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3874 | static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3875 | static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3876 | static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
84a5b4f8 | 3877 | static char macinfo_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
63e46568 | 3878 | static char loc_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
2bee6045 | 3879 | static char ranges_section_label[2 * MAX_ARTIFICIAL_LABEL_BYTES]; |
2ad9852d | 3880 | |
7d9d8943 AM |
3881 | #ifndef TEXT_END_LABEL |
3882 | #define TEXT_END_LABEL "Letext" | |
3883 | #endif | |
7d9d8943 AM |
3884 | #ifndef BLOCK_BEGIN_LABEL |
3885 | #define BLOCK_BEGIN_LABEL "LBB" | |
3886 | #endif | |
3887 | #ifndef BLOCK_END_LABEL | |
3888 | #define BLOCK_END_LABEL "LBE" | |
3889 | #endif | |
7d9d8943 AM |
3890 | #ifndef LINE_CODE_LABEL |
3891 | #define LINE_CODE_LABEL "LM" | |
3892 | #endif | |
3893 | #ifndef SEPARATE_LINE_CODE_LABEL | |
3894 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
3895 | #endif | |
3896 | \f | |
3897 | /* We allow a language front-end to designate a function that is to be | |
3898 | called to "demangle" any name before it it put into a DIE. */ | |
3899 | ||
7080f735 | 3900 | static const char *(*demangle_name_func) (const char *); |
7d9d8943 AM |
3901 | |
3902 | void | |
7080f735 | 3903 | dwarf2out_set_demangle_name_func (const char *(*func) (const char *)) |
7d9d8943 AM |
3904 | { |
3905 | demangle_name_func = func; | |
3906 | } | |
7d9d8943 AM |
3907 | |
3908 | /* Test if rtl node points to a pseudo register. */ | |
3909 | ||
3910 | static inline int | |
7080f735 | 3911 | is_pseudo_reg (rtx rtl) |
7d9d8943 AM |
3912 | { |
3913 | return ((GET_CODE (rtl) == REG && REGNO (rtl) >= FIRST_PSEUDO_REGISTER) | |
3914 | || (GET_CODE (rtl) == SUBREG | |
ddef6bc7 | 3915 | && REGNO (SUBREG_REG (rtl)) >= FIRST_PSEUDO_REGISTER)); |
7d9d8943 AM |
3916 | } |
3917 | ||
3918 | /* Return a reference to a type, with its const and volatile qualifiers | |
3919 | removed. */ | |
3920 | ||
3921 | static inline tree | |
7080f735 | 3922 | type_main_variant (tree type) |
7d9d8943 AM |
3923 | { |
3924 | type = TYPE_MAIN_VARIANT (type); | |
3925 | ||
2ad9852d RK |
3926 | /* ??? There really should be only one main variant among any group of |
3927 | variants of a given type (and all of the MAIN_VARIANT values for all | |
3928 | members of the group should point to that one type) but sometimes the C | |
3929 | front-end messes this up for array types, so we work around that bug | |
3930 | here. */ | |
7d9d8943 AM |
3931 | if (TREE_CODE (type) == ARRAY_TYPE) |
3932 | while (type != TYPE_MAIN_VARIANT (type)) | |
3933 | type = TYPE_MAIN_VARIANT (type); | |
3934 | ||
3935 | return type; | |
3936 | } | |
3937 | ||
cc2902df | 3938 | /* Return nonzero if the given type node represents a tagged type. */ |
7d9d8943 AM |
3939 | |
3940 | static inline int | |
7080f735 | 3941 | is_tagged_type (tree type) |
7d9d8943 | 3942 | { |
b3694847 | 3943 | enum tree_code code = TREE_CODE (type); |
7d9d8943 AM |
3944 | |
3945 | return (code == RECORD_TYPE || code == UNION_TYPE | |
3946 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
3947 | } | |
3948 | ||
3949 | /* Convert a DIE tag into its string name. */ | |
3950 | ||
3951 | static const char * | |
7080f735 | 3952 | dwarf_tag_name (unsigned int tag) |
7d9d8943 AM |
3953 | { |
3954 | switch (tag) | |
3955 | { | |
3956 | case DW_TAG_padding: | |
3957 | return "DW_TAG_padding"; | |
3958 | case DW_TAG_array_type: | |
3959 | return "DW_TAG_array_type"; | |
3960 | case DW_TAG_class_type: | |
3961 | return "DW_TAG_class_type"; | |
3962 | case DW_TAG_entry_point: | |
3963 | return "DW_TAG_entry_point"; | |
3964 | case DW_TAG_enumeration_type: | |
3965 | return "DW_TAG_enumeration_type"; | |
3966 | case DW_TAG_formal_parameter: | |
3967 | return "DW_TAG_formal_parameter"; | |
3968 | case DW_TAG_imported_declaration: | |
3969 | return "DW_TAG_imported_declaration"; | |
3970 | case DW_TAG_label: | |
3971 | return "DW_TAG_label"; | |
3972 | case DW_TAG_lexical_block: | |
3973 | return "DW_TAG_lexical_block"; | |
3974 | case DW_TAG_member: | |
3975 | return "DW_TAG_member"; | |
3976 | case DW_TAG_pointer_type: | |
3977 | return "DW_TAG_pointer_type"; | |
3978 | case DW_TAG_reference_type: | |
3979 | return "DW_TAG_reference_type"; | |
3980 | case DW_TAG_compile_unit: | |
3981 | return "DW_TAG_compile_unit"; | |
3982 | case DW_TAG_string_type: | |
3983 | return "DW_TAG_string_type"; | |
3984 | case DW_TAG_structure_type: | |
3985 | return "DW_TAG_structure_type"; | |
3986 | case DW_TAG_subroutine_type: | |
3987 | return "DW_TAG_subroutine_type"; | |
3988 | case DW_TAG_typedef: | |
3989 | return "DW_TAG_typedef"; | |
3990 | case DW_TAG_union_type: | |
3991 | return "DW_TAG_union_type"; | |
3992 | case DW_TAG_unspecified_parameters: | |
3993 | return "DW_TAG_unspecified_parameters"; | |
3994 | case DW_TAG_variant: | |
3995 | return "DW_TAG_variant"; | |
3996 | case DW_TAG_common_block: | |
3997 | return "DW_TAG_common_block"; | |
3998 | case DW_TAG_common_inclusion: | |
3999 | return "DW_TAG_common_inclusion"; | |
4000 | case DW_TAG_inheritance: | |
4001 | return "DW_TAG_inheritance"; | |
4002 | case DW_TAG_inlined_subroutine: | |
4003 | return "DW_TAG_inlined_subroutine"; | |
4004 | case DW_TAG_module: | |
4005 | return "DW_TAG_module"; | |
4006 | case DW_TAG_ptr_to_member_type: | |
4007 | return "DW_TAG_ptr_to_member_type"; | |
4008 | case DW_TAG_set_type: | |
4009 | return "DW_TAG_set_type"; | |
4010 | case DW_TAG_subrange_type: | |
4011 | return "DW_TAG_subrange_type"; | |
4012 | case DW_TAG_with_stmt: | |
4013 | return "DW_TAG_with_stmt"; | |
4014 | case DW_TAG_access_declaration: | |
4015 | return "DW_TAG_access_declaration"; | |
4016 | case DW_TAG_base_type: | |
4017 | return "DW_TAG_base_type"; | |
4018 | case DW_TAG_catch_block: | |
4019 | return "DW_TAG_catch_block"; | |
4020 | case DW_TAG_const_type: | |
4021 | return "DW_TAG_const_type"; | |
4022 | case DW_TAG_constant: | |
4023 | return "DW_TAG_constant"; | |
4024 | case DW_TAG_enumerator: | |
4025 | return "DW_TAG_enumerator"; | |
4026 | case DW_TAG_file_type: | |
4027 | return "DW_TAG_file_type"; | |
4028 | case DW_TAG_friend: | |
4029 | return "DW_TAG_friend"; | |
4030 | case DW_TAG_namelist: | |
4031 | return "DW_TAG_namelist"; | |
4032 | case DW_TAG_namelist_item: | |
4033 | return "DW_TAG_namelist_item"; | |
4034 | case DW_TAG_packed_type: | |
4035 | return "DW_TAG_packed_type"; | |
4036 | case DW_TAG_subprogram: | |
4037 | return "DW_TAG_subprogram"; | |
4038 | case DW_TAG_template_type_param: | |
4039 | return "DW_TAG_template_type_param"; | |
4040 | case DW_TAG_template_value_param: | |
4041 | return "DW_TAG_template_value_param"; | |
4042 | case DW_TAG_thrown_type: | |
4043 | return "DW_TAG_thrown_type"; | |
4044 | case DW_TAG_try_block: | |
4045 | return "DW_TAG_try_block"; | |
4046 | case DW_TAG_variant_part: | |
4047 | return "DW_TAG_variant_part"; | |
4048 | case DW_TAG_variable: | |
4049 | return "DW_TAG_variable"; | |
4050 | case DW_TAG_volatile_type: | |
4051 | return "DW_TAG_volatile_type"; | |
4052 | case DW_TAG_MIPS_loop: | |
4053 | return "DW_TAG_MIPS_loop"; | |
4054 | case DW_TAG_format_label: | |
4055 | return "DW_TAG_format_label"; | |
4056 | case DW_TAG_function_template: | |
4057 | return "DW_TAG_function_template"; | |
4058 | case DW_TAG_class_template: | |
4059 | return "DW_TAG_class_template"; | |
881c6935 JM |
4060 | case DW_TAG_GNU_BINCL: |
4061 | return "DW_TAG_GNU_BINCL"; | |
4062 | case DW_TAG_GNU_EINCL: | |
4063 | return "DW_TAG_GNU_EINCL"; | |
7d9d8943 AM |
4064 | default: |
4065 | return "DW_TAG_<unknown>"; | |
4066 | } | |
4067 | } | |
4068 | ||
4069 | /* Convert a DWARF attribute code into its string name. */ | |
4070 | ||
4071 | static const char * | |
7080f735 | 4072 | dwarf_attr_name (unsigned int attr) |
7d9d8943 AM |
4073 | { |
4074 | switch (attr) | |
4075 | { | |
4076 | case DW_AT_sibling: | |
4077 | return "DW_AT_sibling"; | |
4078 | case DW_AT_location: | |
4079 | return "DW_AT_location"; | |
4080 | case DW_AT_name: | |
4081 | return "DW_AT_name"; | |
4082 | case DW_AT_ordering: | |
4083 | return "DW_AT_ordering"; | |
4084 | case DW_AT_subscr_data: | |
4085 | return "DW_AT_subscr_data"; | |
4086 | case DW_AT_byte_size: | |
4087 | return "DW_AT_byte_size"; | |
4088 | case DW_AT_bit_offset: | |
4089 | return "DW_AT_bit_offset"; | |
4090 | case DW_AT_bit_size: | |
4091 | return "DW_AT_bit_size"; | |
4092 | case DW_AT_element_list: | |
4093 | return "DW_AT_element_list"; | |
4094 | case DW_AT_stmt_list: | |
4095 | return "DW_AT_stmt_list"; | |
4096 | case DW_AT_low_pc: | |
4097 | return "DW_AT_low_pc"; | |
4098 | case DW_AT_high_pc: | |
4099 | return "DW_AT_high_pc"; | |
4100 | case DW_AT_language: | |
4101 | return "DW_AT_language"; | |
4102 | case DW_AT_member: | |
4103 | return "DW_AT_member"; | |
4104 | case DW_AT_discr: | |
4105 | return "DW_AT_discr"; | |
4106 | case DW_AT_discr_value: | |
4107 | return "DW_AT_discr_value"; | |
4108 | case DW_AT_visibility: | |
4109 | return "DW_AT_visibility"; | |
4110 | case DW_AT_import: | |
4111 | return "DW_AT_import"; | |
4112 | case DW_AT_string_length: | |
4113 | return "DW_AT_string_length"; | |
4114 | case DW_AT_common_reference: | |
4115 | return "DW_AT_common_reference"; | |
4116 | case DW_AT_comp_dir: | |
4117 | return "DW_AT_comp_dir"; | |
4118 | case DW_AT_const_value: | |
4119 | return "DW_AT_const_value"; | |
4120 | case DW_AT_containing_type: | |
4121 | return "DW_AT_containing_type"; | |
4122 | case DW_AT_default_value: | |
4123 | return "DW_AT_default_value"; | |
4124 | case DW_AT_inline: | |
4125 | return "DW_AT_inline"; | |
4126 | case DW_AT_is_optional: | |
4127 | return "DW_AT_is_optional"; | |
4128 | case DW_AT_lower_bound: | |
4129 | return "DW_AT_lower_bound"; | |
4130 | case DW_AT_producer: | |
4131 | return "DW_AT_producer"; | |
4132 | case DW_AT_prototyped: | |
4133 | return "DW_AT_prototyped"; | |
4134 | case DW_AT_return_addr: | |
4135 | return "DW_AT_return_addr"; | |
4136 | case DW_AT_start_scope: | |
4137 | return "DW_AT_start_scope"; | |
4138 | case DW_AT_stride_size: | |
4139 | return "DW_AT_stride_size"; | |
4140 | case DW_AT_upper_bound: | |
4141 | return "DW_AT_upper_bound"; | |
4142 | case DW_AT_abstract_origin: | |
4143 | return "DW_AT_abstract_origin"; | |
4144 | case DW_AT_accessibility: | |
4145 | return "DW_AT_accessibility"; | |
4146 | case DW_AT_address_class: | |
4147 | return "DW_AT_address_class"; | |
4148 | case DW_AT_artificial: | |
4149 | return "DW_AT_artificial"; | |
4150 | case DW_AT_base_types: | |
4151 | return "DW_AT_base_types"; | |
4152 | case DW_AT_calling_convention: | |
4153 | return "DW_AT_calling_convention"; | |
4154 | case DW_AT_count: | |
4155 | return "DW_AT_count"; | |
4156 | case DW_AT_data_member_location: | |
4157 | return "DW_AT_data_member_location"; | |
4158 | case DW_AT_decl_column: | |
4159 | return "DW_AT_decl_column"; | |
4160 | case DW_AT_decl_file: | |
4161 | return "DW_AT_decl_file"; | |
4162 | case DW_AT_decl_line: | |
4163 | return "DW_AT_decl_line"; | |
4164 | case DW_AT_declaration: | |
4165 | return "DW_AT_declaration"; | |
4166 | case DW_AT_discr_list: | |
4167 | return "DW_AT_discr_list"; | |
4168 | case DW_AT_encoding: | |
4169 | return "DW_AT_encoding"; | |
4170 | case DW_AT_external: | |
4171 | return "DW_AT_external"; | |
4172 | case DW_AT_frame_base: | |
4173 | return "DW_AT_frame_base"; | |
4174 | case DW_AT_friend: | |
4175 | return "DW_AT_friend"; | |
4176 | case DW_AT_identifier_case: | |
4177 | return "DW_AT_identifier_case"; | |
4178 | case DW_AT_macro_info: | |
4179 | return "DW_AT_macro_info"; | |
4180 | case DW_AT_namelist_items: | |
4181 | return "DW_AT_namelist_items"; | |
4182 | case DW_AT_priority: | |
4183 | return "DW_AT_priority"; | |
4184 | case DW_AT_segment: | |
4185 | return "DW_AT_segment"; | |
4186 | case DW_AT_specification: | |
4187 | return "DW_AT_specification"; | |
4188 | case DW_AT_static_link: | |
4189 | return "DW_AT_static_link"; | |
4190 | case DW_AT_type: | |
4191 | return "DW_AT_type"; | |
4192 | case DW_AT_use_location: | |
4193 | return "DW_AT_use_location"; | |
4194 | case DW_AT_variable_parameter: | |
4195 | return "DW_AT_variable_parameter"; | |
4196 | case DW_AT_virtuality: | |
4197 | return "DW_AT_virtuality"; | |
4198 | case DW_AT_vtable_elem_location: | |
4199 | return "DW_AT_vtable_elem_location"; | |
4200 | ||
a20612aa RH |
4201 | case DW_AT_allocated: |
4202 | return "DW_AT_allocated"; | |
4203 | case DW_AT_associated: | |
4204 | return "DW_AT_associated"; | |
4205 | case DW_AT_data_location: | |
4206 | return "DW_AT_data_location"; | |
4207 | case DW_AT_stride: | |
4208 | return "DW_AT_stride"; | |
4209 | case DW_AT_entry_pc: | |
4210 | return "DW_AT_entry_pc"; | |
4211 | case DW_AT_use_UTF8: | |
4212 | return "DW_AT_use_UTF8"; | |
4213 | case DW_AT_extension: | |
4214 | return "DW_AT_extension"; | |
4215 | case DW_AT_ranges: | |
4216 | return "DW_AT_ranges"; | |
4217 | case DW_AT_trampoline: | |
4218 | return "DW_AT_trampoline"; | |
4219 | case DW_AT_call_column: | |
4220 | return "DW_AT_call_column"; | |
4221 | case DW_AT_call_file: | |
4222 | return "DW_AT_call_file"; | |
4223 | case DW_AT_call_line: | |
4224 | return "DW_AT_call_line"; | |
4225 | ||
7d9d8943 AM |
4226 | case DW_AT_MIPS_fde: |
4227 | return "DW_AT_MIPS_fde"; | |
4228 | case DW_AT_MIPS_loop_begin: | |
4229 | return "DW_AT_MIPS_loop_begin"; | |
4230 | case DW_AT_MIPS_tail_loop_begin: | |
4231 | return "DW_AT_MIPS_tail_loop_begin"; | |
4232 | case DW_AT_MIPS_epilog_begin: | |
4233 | return "DW_AT_MIPS_epilog_begin"; | |
4234 | case DW_AT_MIPS_loop_unroll_factor: | |
4235 | return "DW_AT_MIPS_loop_unroll_factor"; | |
4236 | case DW_AT_MIPS_software_pipeline_depth: | |
4237 | return "DW_AT_MIPS_software_pipeline_depth"; | |
4238 | case DW_AT_MIPS_linkage_name: | |
4239 | return "DW_AT_MIPS_linkage_name"; | |
4240 | case DW_AT_MIPS_stride: | |
4241 | return "DW_AT_MIPS_stride"; | |
4242 | case DW_AT_MIPS_abstract_name: | |
4243 | return "DW_AT_MIPS_abstract_name"; | |
4244 | case DW_AT_MIPS_clone_origin: | |
4245 | return "DW_AT_MIPS_clone_origin"; | |
4246 | case DW_AT_MIPS_has_inlines: | |
4247 | return "DW_AT_MIPS_has_inlines"; | |
4248 | ||
4249 | case DW_AT_sf_names: | |
4250 | return "DW_AT_sf_names"; | |
4251 | case DW_AT_src_info: | |
4252 | return "DW_AT_src_info"; | |
4253 | case DW_AT_mac_info: | |
4254 | return "DW_AT_mac_info"; | |
4255 | case DW_AT_src_coords: | |
4256 | return "DW_AT_src_coords"; | |
4257 | case DW_AT_body_begin: | |
4258 | return "DW_AT_body_begin"; | |
4259 | case DW_AT_body_end: | |
4260 | return "DW_AT_body_end"; | |
84f0ace0 JM |
4261 | case DW_AT_GNU_vector: |
4262 | return "DW_AT_GNU_vector"; | |
4263 | ||
7a0c8d71 DR |
4264 | case DW_AT_VMS_rtnbeg_pd_address: |
4265 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
4266 | ||
7d9d8943 AM |
4267 | default: |
4268 | return "DW_AT_<unknown>"; | |
4269 | } | |
4270 | } | |
4271 | ||
4272 | /* Convert a DWARF value form code into its string name. */ | |
4273 | ||
4274 | static const char * | |
7080f735 | 4275 | dwarf_form_name (unsigned int form) |
7d9d8943 AM |
4276 | { |
4277 | switch (form) | |
4278 | { | |
4279 | case DW_FORM_addr: | |
4280 | return "DW_FORM_addr"; | |
4281 | case DW_FORM_block2: | |
4282 | return "DW_FORM_block2"; | |
4283 | case DW_FORM_block4: | |
4284 | return "DW_FORM_block4"; | |
4285 | case DW_FORM_data2: | |
4286 | return "DW_FORM_data2"; | |
4287 | case DW_FORM_data4: | |
4288 | return "DW_FORM_data4"; | |
4289 | case DW_FORM_data8: | |
4290 | return "DW_FORM_data8"; | |
4291 | case DW_FORM_string: | |
4292 | return "DW_FORM_string"; | |
4293 | case DW_FORM_block: | |
4294 | return "DW_FORM_block"; | |
4295 | case DW_FORM_block1: | |
4296 | return "DW_FORM_block1"; | |
4297 | case DW_FORM_data1: | |
4298 | return "DW_FORM_data1"; | |
4299 | case DW_FORM_flag: | |
4300 | return "DW_FORM_flag"; | |
4301 | case DW_FORM_sdata: | |
4302 | return "DW_FORM_sdata"; | |
4303 | case DW_FORM_strp: | |
4304 | return "DW_FORM_strp"; | |
4305 | case DW_FORM_udata: | |
4306 | return "DW_FORM_udata"; | |
4307 | case DW_FORM_ref_addr: | |
4308 | return "DW_FORM_ref_addr"; | |
4309 | case DW_FORM_ref1: | |
4310 | return "DW_FORM_ref1"; | |
4311 | case DW_FORM_ref2: | |
4312 | return "DW_FORM_ref2"; | |
4313 | case DW_FORM_ref4: | |
4314 | return "DW_FORM_ref4"; | |
4315 | case DW_FORM_ref8: | |
4316 | return "DW_FORM_ref8"; | |
4317 | case DW_FORM_ref_udata: | |
4318 | return "DW_FORM_ref_udata"; | |
4319 | case DW_FORM_indirect: | |
4320 | return "DW_FORM_indirect"; | |
3f76745e | 4321 | default: |
7d9d8943 | 4322 | return "DW_FORM_<unknown>"; |
a3f97cbb JW |
4323 | } |
4324 | } | |
4325 | ||
3f76745e | 4326 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 4327 | |
487a6e06 | 4328 | #if 0 |
d560ee52 | 4329 | static const char * |
7080f735 | 4330 | dwarf_type_encoding_name (unsigned enc) |
a3f97cbb | 4331 | { |
3f76745e | 4332 | switch (enc) |
a3f97cbb | 4333 | { |
3f76745e JM |
4334 | case DW_ATE_address: |
4335 | return "DW_ATE_address"; | |
4336 | case DW_ATE_boolean: | |
4337 | return "DW_ATE_boolean"; | |
4338 | case DW_ATE_complex_float: | |
4339 | return "DW_ATE_complex_float"; | |
4340 | case DW_ATE_float: | |
4341 | return "DW_ATE_float"; | |
4342 | case DW_ATE_signed: | |
4343 | return "DW_ATE_signed"; | |
4344 | case DW_ATE_signed_char: | |
4345 | return "DW_ATE_signed_char"; | |
4346 | case DW_ATE_unsigned: | |
4347 | return "DW_ATE_unsigned"; | |
4348 | case DW_ATE_unsigned_char: | |
4349 | return "DW_ATE_unsigned_char"; | |
4350 | default: | |
4351 | return "DW_ATE_<unknown>"; | |
4352 | } | |
a3f97cbb | 4353 | } |
487a6e06 | 4354 | #endif |
3f76745e JM |
4355 | \f |
4356 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
4357 | instance of an inlined instance of a decl which is local to an inline | |
4358 | function, so we have to trace all of the way back through the origin chain | |
4359 | to find out what sort of node actually served as the original seed for the | |
4360 | given block. */ | |
a3f97cbb | 4361 | |
3f76745e | 4362 | static tree |
7080f735 | 4363 | decl_ultimate_origin (tree decl) |
a3f97cbb | 4364 | { |
10a11b75 JM |
4365 | /* output_inline_function sets DECL_ABSTRACT_ORIGIN for all the |
4366 | nodes in the function to point to themselves; ignore that if | |
4367 | we're trying to output the abstract instance of this function. */ | |
4368 | if (DECL_ABSTRACT (decl) && DECL_ABSTRACT_ORIGIN (decl) == decl) | |
4369 | return NULL_TREE; | |
4370 | ||
556273e0 | 4371 | #ifdef ENABLE_CHECKING |
02e24c7a MM |
4372 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) |
4373 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
4374 | most distant ancestor, this should never happen. */ | |
4375 | abort (); | |
4376 | #endif | |
3f76745e | 4377 | |
02e24c7a | 4378 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
4379 | } |
4380 | ||
3f76745e JM |
4381 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
4382 | instance of an inlined instance of a block which is local to an inline | |
4383 | function, so we have to trace all of the way back through the origin chain | |
4384 | to find out what sort of node actually served as the original seed for the | |
4385 | given block. */ | |
71dfc51f | 4386 | |
3f76745e | 4387 | static tree |
7080f735 | 4388 | block_ultimate_origin (tree block) |
a3f97cbb | 4389 | { |
b3694847 | 4390 | tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 4391 | |
10a11b75 JM |
4392 | /* output_inline_function sets BLOCK_ABSTRACT_ORIGIN for all the |
4393 | nodes in the function to point to themselves; ignore that if | |
4394 | we're trying to output the abstract instance of this function. */ | |
4395 | if (BLOCK_ABSTRACT (block) && immediate_origin == block) | |
4396 | return NULL_TREE; | |
4397 | ||
3f76745e JM |
4398 | if (immediate_origin == NULL_TREE) |
4399 | return NULL_TREE; | |
4400 | else | |
4401 | { | |
b3694847 SS |
4402 | tree ret_val; |
4403 | tree lookahead = immediate_origin; | |
71dfc51f | 4404 | |
3f76745e JM |
4405 | do |
4406 | { | |
4407 | ret_val = lookahead; | |
2ad9852d RK |
4408 | lookahead = (TREE_CODE (ret_val) == BLOCK |
4409 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) : NULL); | |
3f76745e JM |
4410 | } |
4411 | while (lookahead != NULL && lookahead != ret_val); | |
4412 | ||
4413 | return ret_val; | |
4414 | } | |
a3f97cbb JW |
4415 | } |
4416 | ||
3f76745e JM |
4417 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
4418 | of a virtual function may refer to a base class, so we check the 'this' | |
4419 | parameter. */ | |
71dfc51f | 4420 | |
3f76745e | 4421 | static tree |
7080f735 | 4422 | decl_class_context (tree decl) |
a3f97cbb | 4423 | { |
3f76745e | 4424 | tree context = NULL_TREE; |
71dfc51f | 4425 | |
3f76745e JM |
4426 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
4427 | context = DECL_CONTEXT (decl); | |
4428 | else | |
4429 | context = TYPE_MAIN_VARIANT | |
4430 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 4431 | |
2f939d94 | 4432 | if (context && !TYPE_P (context)) |
3f76745e JM |
4433 | context = NULL_TREE; |
4434 | ||
4435 | return context; | |
a3f97cbb JW |
4436 | } |
4437 | \f | |
a96c67ec | 4438 | /* Add an attribute/value pair to a DIE. We build the lists up in reverse |
881c6935 | 4439 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f RK |
4440 | |
4441 | static inline void | |
7080f735 | 4442 | add_dwarf_attr (dw_die_ref die, dw_attr_ref attr) |
a3f97cbb | 4443 | { |
3f76745e | 4444 | if (die != NULL && attr != NULL) |
a3f97cbb | 4445 | { |
a96c67ec JM |
4446 | attr->dw_attr_next = die->die_attr; |
4447 | die->die_attr = attr; | |
a3f97cbb JW |
4448 | } |
4449 | } | |
4450 | ||
17211ab5 | 4451 | static inline enum dw_val_class |
7080f735 | 4452 | AT_class (dw_attr_ref a) |
a96c67ec JM |
4453 | { |
4454 | return a->dw_attr_val.val_class; | |
4455 | } | |
4456 | ||
3f76745e | 4457 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 4458 | |
3f76745e | 4459 | static inline void |
7080f735 | 4460 | add_AT_flag (dw_die_ref die, enum dwarf_attribute attr_kind, unsigned int flag) |
a3f97cbb | 4461 | { |
703ad42b | 4462 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
71dfc51f | 4463 | |
3f76745e JM |
4464 | attr->dw_attr_next = NULL; |
4465 | attr->dw_attr = attr_kind; | |
4466 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
4467 | attr->dw_attr_val.v.val_flag = flag; | |
4468 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4469 | } |
4470 | ||
a96c67ec | 4471 | static inline unsigned |
7080f735 | 4472 | AT_flag (dw_attr_ref a) |
a96c67ec JM |
4473 | { |
4474 | if (a && AT_class (a) == dw_val_class_flag) | |
4475 | return a->dw_attr_val.v.val_flag; | |
4476 | ||
40e8cc95 | 4477 | abort (); |
a96c67ec JM |
4478 | } |
4479 | ||
3f76745e | 4480 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 4481 | |
3f76745e | 4482 | static inline void |
7080f735 | 4483 | add_AT_int (dw_die_ref die, enum dwarf_attribute attr_kind, long int int_val) |
a3f97cbb | 4484 | { |
703ad42b | 4485 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
3f76745e JM |
4486 | |
4487 | attr->dw_attr_next = NULL; | |
4488 | attr->dw_attr = attr_kind; | |
4489 | attr->dw_attr_val.val_class = dw_val_class_const; | |
4490 | attr->dw_attr_val.v.val_int = int_val; | |
4491 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4492 | } |
4493 | ||
a96c67ec | 4494 | static inline long int |
7080f735 | 4495 | AT_int (dw_attr_ref a) |
a96c67ec JM |
4496 | { |
4497 | if (a && AT_class (a) == dw_val_class_const) | |
4498 | return a->dw_attr_val.v.val_int; | |
4499 | ||
40e8cc95 | 4500 | abort (); |
a96c67ec JM |
4501 | } |
4502 | ||
3f76745e | 4503 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 4504 | |
3f76745e | 4505 | static inline void |
7080f735 AJ |
4506 | add_AT_unsigned (dw_die_ref die, enum dwarf_attribute attr_kind, |
4507 | long unsigned int unsigned_val) | |
a3f97cbb | 4508 | { |
703ad42b | 4509 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
3f76745e JM |
4510 | |
4511 | attr->dw_attr_next = NULL; | |
4512 | attr->dw_attr = attr_kind; | |
4513 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
4514 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
4515 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4516 | } |
71dfc51f | 4517 | |
a96c67ec | 4518 | static inline unsigned long |
7080f735 | 4519 | AT_unsigned (dw_attr_ref a) |
a96c67ec JM |
4520 | { |
4521 | if (a && AT_class (a) == dw_val_class_unsigned_const) | |
4522 | return a->dw_attr_val.v.val_unsigned; | |
4523 | ||
40e8cc95 | 4524 | abort (); |
a96c67ec JM |
4525 | } |
4526 | ||
3f76745e JM |
4527 | /* Add an unsigned double integer attribute value to a DIE. */ |
4528 | ||
4529 | static inline void | |
7080f735 AJ |
4530 | add_AT_long_long (dw_die_ref die, enum dwarf_attribute attr_kind, |
4531 | long unsigned int val_hi, long unsigned int val_low) | |
a3f97cbb | 4532 | { |
703ad42b | 4533 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
71dfc51f | 4534 | |
3f76745e JM |
4535 | attr->dw_attr_next = NULL; |
4536 | attr->dw_attr = attr_kind; | |
4537 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
4538 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
4539 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
4540 | add_dwarf_attr (die, attr); | |
4541 | } | |
71dfc51f | 4542 | |
3f76745e | 4543 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 4544 | |
3f76745e | 4545 | static inline void |
7080f735 AJ |
4546 | add_AT_float (dw_die_ref die, enum dwarf_attribute attr_kind, |
4547 | unsigned int length, long int *array) | |
3f76745e | 4548 | { |
703ad42b | 4549 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
3f76745e JM |
4550 | |
4551 | attr->dw_attr_next = NULL; | |
4552 | attr->dw_attr = attr_kind; | |
4553 | attr->dw_attr_val.val_class = dw_val_class_float; | |
4554 | attr->dw_attr_val.v.val_float.length = length; | |
4555 | attr->dw_attr_val.v.val_float.array = array; | |
4556 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4557 | } |
4558 | ||
17211ab5 GK |
4559 | /* Hash and equality functions for debug_str_hash. */ |
4560 | ||
4561 | static hashval_t | |
7080f735 | 4562 | debug_str_do_hash (const void *x) |
17211ab5 GK |
4563 | { |
4564 | return htab_hash_string (((const struct indirect_string_node *)x)->str); | |
4565 | } | |
4566 | ||
4567 | static int | |
7080f735 | 4568 | debug_str_eq (const void *x1, const void *x2) |
17211ab5 GK |
4569 | { |
4570 | return strcmp ((((const struct indirect_string_node *)x1)->str), | |
4571 | (const char *)x2) == 0; | |
4572 | } | |
4573 | ||
3f76745e | 4574 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 4575 | |
3f76745e | 4576 | static inline void |
7080f735 | 4577 | add_AT_string (dw_die_ref die, enum dwarf_attribute attr_kind, const char *str) |
a3f97cbb | 4578 | { |
703ad42b | 4579 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
9eb4015a | 4580 | struct indirect_string_node *node; |
fad205ff | 4581 | void **slot; |
c26fbbca | 4582 | |
9eb4015a | 4583 | if (! debug_str_hash) |
7080f735 | 4584 | debug_str_hash = htab_create_ggc (10, debug_str_do_hash, |
17211ab5 GK |
4585 | debug_str_eq, NULL); |
4586 | ||
4587 | slot = htab_find_slot_with_hash (debug_str_hash, str, | |
4588 | htab_hash_string (str), INSERT); | |
4589 | if (*slot == NULL) | |
4590 | *slot = ggc_alloc_cleared (sizeof (struct indirect_string_node)); | |
4591 | node = (struct indirect_string_node *) *slot; | |
485bad26 | 4592 | node->str = ggc_strdup (str); |
9eb4015a | 4593 | node->refcount++; |
71dfc51f | 4594 | |
3f76745e JM |
4595 | attr->dw_attr_next = NULL; |
4596 | attr->dw_attr = attr_kind; | |
4597 | attr->dw_attr_val.val_class = dw_val_class_str; | |
9eb4015a | 4598 | attr->dw_attr_val.v.val_str = node; |
3f76745e JM |
4599 | add_dwarf_attr (die, attr); |
4600 | } | |
71dfc51f | 4601 | |
a96c67ec | 4602 | static inline const char * |
7080f735 | 4603 | AT_string (dw_attr_ref a) |
a96c67ec JM |
4604 | { |
4605 | if (a && AT_class (a) == dw_val_class_str) | |
17211ab5 | 4606 | return a->dw_attr_val.v.val_str->str; |
9eb4015a JJ |
4607 | |
4608 | abort (); | |
4609 | } | |
4610 | ||
4611 | /* Find out whether a string should be output inline in DIE | |
4612 | or out-of-line in .debug_str section. */ | |
4613 | ||
9eb4015a | 4614 | static int |
7080f735 | 4615 | AT_string_form (dw_attr_ref a) |
9eb4015a JJ |
4616 | { |
4617 | if (a && AT_class (a) == dw_val_class_str) | |
4618 | { | |
4619 | struct indirect_string_node *node; | |
4620 | unsigned int len; | |
9eb4015a JJ |
4621 | char label[32]; |
4622 | ||
4623 | node = a->dw_attr_val.v.val_str; | |
4624 | if (node->form) | |
4625 | return node->form; | |
4626 | ||
17211ab5 | 4627 | len = strlen (node->str) + 1; |
9eb4015a | 4628 | |
2ad9852d RK |
4629 | /* If the string is shorter or equal to the size of the reference, it is |
4630 | always better to put it inline. */ | |
9eb4015a JJ |
4631 | if (len <= DWARF_OFFSET_SIZE || node->refcount == 0) |
4632 | return node->form = DW_FORM_string; | |
4633 | ||
2ad9852d RK |
4634 | /* If we cannot expect the linker to merge strings in .debug_str |
4635 | section, only put it into .debug_str if it is worth even in this | |
4636 | single module. */ | |
4637 | if ((DEBUG_STR_SECTION_FLAGS & SECTION_MERGE) == 0 | |
4638 | && (len - DWARF_OFFSET_SIZE) * node->refcount <= len) | |
4639 | return node->form = DW_FORM_string; | |
9eb4015a | 4640 | |
17211ab5 GK |
4641 | ASM_GENERATE_INTERNAL_LABEL (label, "LASF", dw2_string_counter); |
4642 | ++dw2_string_counter; | |
9eb4015a | 4643 | node->label = xstrdup (label); |
2ad9852d | 4644 | |
9eb4015a JJ |
4645 | return node->form = DW_FORM_strp; |
4646 | } | |
a96c67ec | 4647 | |
40e8cc95 | 4648 | abort (); |
a96c67ec JM |
4649 | } |
4650 | ||
3f76745e | 4651 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 4652 | |
3f76745e | 4653 | static inline void |
7080f735 | 4654 | add_AT_die_ref (dw_die_ref die, enum dwarf_attribute attr_kind, dw_die_ref targ_die) |
3f76745e | 4655 | { |
703ad42b | 4656 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
71dfc51f | 4657 | |
3f76745e JM |
4658 | attr->dw_attr_next = NULL; |
4659 | attr->dw_attr = attr_kind; | |
4660 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
881c6935 JM |
4661 | attr->dw_attr_val.v.val_die_ref.die = targ_die; |
4662 | attr->dw_attr_val.v.val_die_ref.external = 0; | |
3f76745e JM |
4663 | add_dwarf_attr (die, attr); |
4664 | } | |
b1ccbc24 | 4665 | |
a96c67ec | 4666 | static inline dw_die_ref |
7080f735 | 4667 | AT_ref (dw_attr_ref a) |
a96c67ec JM |
4668 | { |
4669 | if (a && AT_class (a) == dw_val_class_die_ref) | |
881c6935 | 4670 | return a->dw_attr_val.v.val_die_ref.die; |
a96c67ec | 4671 | |
40e8cc95 | 4672 | abort (); |
a96c67ec JM |
4673 | } |
4674 | ||
881c6935 | 4675 | static inline int |
7080f735 | 4676 | AT_ref_external (dw_attr_ref a) |
881c6935 JM |
4677 | { |
4678 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4679 | return a->dw_attr_val.v.val_die_ref.external; | |
4680 | ||
4681 | return 0; | |
4682 | } | |
4683 | ||
881c6935 | 4684 | static inline void |
7080f735 | 4685 | set_AT_ref_external (dw_attr_ref a, int i) |
881c6935 JM |
4686 | { |
4687 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4688 | a->dw_attr_val.v.val_die_ref.external = i; | |
4689 | else | |
4690 | abort (); | |
4691 | } | |
4692 | ||
3f76745e | 4693 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 4694 | |
3f76745e | 4695 | static inline void |
7080f735 | 4696 | add_AT_fde_ref (dw_die_ref die, enum dwarf_attribute attr_kind, unsigned int targ_fde) |
3f76745e | 4697 | { |
703ad42b | 4698 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
b1ccbc24 | 4699 | |
3f76745e JM |
4700 | attr->dw_attr_next = NULL; |
4701 | attr->dw_attr = attr_kind; | |
4702 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
4703 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
4704 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4705 | } |
71dfc51f | 4706 | |
3f76745e | 4707 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 4708 | |
3f76745e | 4709 | static inline void |
7080f735 | 4710 | add_AT_loc (dw_die_ref die, enum dwarf_attribute attr_kind, dw_loc_descr_ref loc) |
3f76745e | 4711 | { |
703ad42b | 4712 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
71dfc51f | 4713 | |
3f76745e JM |
4714 | attr->dw_attr_next = NULL; |
4715 | attr->dw_attr = attr_kind; | |
4716 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
4717 | attr->dw_attr_val.v.val_loc = loc; | |
4718 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4719 | } |
4720 | ||
a96c67ec | 4721 | static inline dw_loc_descr_ref |
7080f735 | 4722 | AT_loc (dw_attr_ref a) |
a96c67ec JM |
4723 | { |
4724 | if (a && AT_class (a) == dw_val_class_loc) | |
4725 | return a->dw_attr_val.v.val_loc; | |
4726 | ||
40e8cc95 | 4727 | abort (); |
a96c67ec JM |
4728 | } |
4729 | ||
63e46568 | 4730 | static inline void |
7080f735 | 4731 | add_AT_loc_list (dw_die_ref die, enum dwarf_attribute attr_kind, dw_loc_list_ref loc_list) |
63e46568 | 4732 | { |
703ad42b | 4733 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
63e46568 DB |
4734 | |
4735 | attr->dw_attr_next = NULL; | |
4736 | attr->dw_attr = attr_kind; | |
4737 | attr->dw_attr_val.val_class = dw_val_class_loc_list; | |
4738 | attr->dw_attr_val.v.val_loc_list = loc_list; | |
4739 | add_dwarf_attr (die, attr); | |
4740 | have_location_lists = 1; | |
4741 | } | |
4742 | ||
63e46568 | 4743 | static inline dw_loc_list_ref |
7080f735 | 4744 | AT_loc_list (dw_attr_ref a) |
63e46568 DB |
4745 | { |
4746 | if (a && AT_class (a) == dw_val_class_loc_list) | |
4747 | return a->dw_attr_val.v.val_loc_list; | |
4748 | ||
4749 | abort (); | |
4750 | } | |
4751 | ||
3f76745e | 4752 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 4753 | |
3f76745e | 4754 | static inline void |
7080f735 | 4755 | add_AT_addr (dw_die_ref die, enum dwarf_attribute attr_kind, rtx addr) |
a3f97cbb | 4756 | { |
703ad42b | 4757 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
71dfc51f | 4758 | |
3f76745e JM |
4759 | attr->dw_attr_next = NULL; |
4760 | attr->dw_attr = attr_kind; | |
4761 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
4762 | attr->dw_attr_val.v.val_addr = addr; | |
4763 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4764 | } |
4765 | ||
1865dbb5 | 4766 | static inline rtx |
7080f735 | 4767 | AT_addr (dw_attr_ref a) |
a96c67ec JM |
4768 | { |
4769 | if (a && AT_class (a) == dw_val_class_addr) | |
4770 | return a->dw_attr_val.v.val_addr; | |
4771 | ||
40e8cc95 | 4772 | abort (); |
a96c67ec JM |
4773 | } |
4774 | ||
3f76745e | 4775 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 4776 | |
3f76745e | 4777 | static inline void |
7080f735 | 4778 | add_AT_lbl_id (dw_die_ref die, enum dwarf_attribute attr_kind, const char *lbl_id) |
a3f97cbb | 4779 | { |
703ad42b | 4780 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
71dfc51f | 4781 | |
3f76745e JM |
4782 | attr->dw_attr_next = NULL; |
4783 | attr->dw_attr = attr_kind; | |
4784 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
4785 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
4786 | add_dwarf_attr (die, attr); | |
4787 | } | |
71dfc51f | 4788 | |
3f76745e JM |
4789 | /* Add a section offset attribute value to a DIE. */ |
4790 | ||
4791 | static inline void | |
7080f735 | 4792 | add_AT_lbl_offset (dw_die_ref die, enum dwarf_attribute attr_kind, const char *label) |
3f76745e | 4793 | { |
703ad42b | 4794 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
71dfc51f | 4795 | |
3f76745e JM |
4796 | attr->dw_attr_next = NULL; |
4797 | attr->dw_attr = attr_kind; | |
8b790721 | 4798 | attr->dw_attr_val.val_class = dw_val_class_lbl_offset; |
a96c67ec | 4799 | attr->dw_attr_val.v.val_lbl_id = xstrdup (label); |
3f76745e | 4800 | add_dwarf_attr (die, attr); |
a3f97cbb JW |
4801 | } |
4802 | ||
a20612aa RH |
4803 | /* Add an offset attribute value to a DIE. */ |
4804 | ||
2bee6045 | 4805 | static inline void |
7080f735 | 4806 | add_AT_offset (dw_die_ref die, enum dwarf_attribute attr_kind, long unsigned int offset) |
a20612aa | 4807 | { |
703ad42b | 4808 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
a20612aa RH |
4809 | |
4810 | attr->dw_attr_next = NULL; | |
4811 | attr->dw_attr = attr_kind; | |
4812 | attr->dw_attr_val.val_class = dw_val_class_offset; | |
4813 | attr->dw_attr_val.v.val_offset = offset; | |
4814 | add_dwarf_attr (die, attr); | |
4815 | } | |
4816 | ||
2bee6045 JJ |
4817 | /* Add an range_list attribute value to a DIE. */ |
4818 | ||
4819 | static void | |
7080f735 AJ |
4820 | add_AT_range_list (dw_die_ref die, enum dwarf_attribute attr_kind, |
4821 | long unsigned int offset) | |
2bee6045 | 4822 | { |
703ad42b | 4823 | dw_attr_ref attr = ggc_alloc (sizeof (dw_attr_node)); |
2bee6045 JJ |
4824 | |
4825 | attr->dw_attr_next = NULL; | |
4826 | attr->dw_attr = attr_kind; | |
4827 | attr->dw_attr_val.val_class = dw_val_class_range_list; | |
4828 | attr->dw_attr_val.v.val_offset = offset; | |
4829 | add_dwarf_attr (die, attr); | |
4830 | } | |
4831 | ||
a96c67ec | 4832 | static inline const char * |
7080f735 | 4833 | AT_lbl (dw_attr_ref a) |
a3f97cbb | 4834 | { |
a96c67ec JM |
4835 | if (a && (AT_class (a) == dw_val_class_lbl_id |
4836 | || AT_class (a) == dw_val_class_lbl_offset)) | |
4837 | return a->dw_attr_val.v.val_lbl_id; | |
71dfc51f | 4838 | |
40e8cc95 | 4839 | abort (); |
a3f97cbb JW |
4840 | } |
4841 | ||
3f76745e | 4842 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 4843 | |
3f76745e | 4844 | static inline dw_attr_ref |
7080f735 | 4845 | get_AT (dw_die_ref die, enum dwarf_attribute attr_kind) |
f37230f0 | 4846 | { |
b3694847 SS |
4847 | dw_attr_ref a; |
4848 | dw_die_ref spec = NULL; | |
556273e0 | 4849 | |
3f76745e JM |
4850 | if (die != NULL) |
4851 | { | |
4852 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
2ad9852d RK |
4853 | if (a->dw_attr == attr_kind) |
4854 | return a; | |
4855 | else if (a->dw_attr == DW_AT_specification | |
4856 | || a->dw_attr == DW_AT_abstract_origin) | |
4857 | spec = AT_ref (a); | |
71dfc51f | 4858 | |
3f76745e JM |
4859 | if (spec) |
4860 | return get_AT (spec, attr_kind); | |
4861 | } | |
4862 | ||
4863 | return NULL; | |
f37230f0 JM |
4864 | } |
4865 | ||
2ad9852d RK |
4866 | /* Return the "low pc" attribute value, typically associated with a subprogram |
4867 | DIE. Return null if the "low pc" attribute is either not present, or if it | |
4868 | cannot be represented as an assembler label identifier. */ | |
71dfc51f | 4869 | |
a96c67ec | 4870 | static inline const char * |
7080f735 | 4871 | get_AT_low_pc (dw_die_ref die) |
7e23cb16 | 4872 | { |
b3694847 | 4873 | dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
2ad9852d | 4874 | |
40e8cc95 | 4875 | return a ? AT_lbl (a) : NULL; |
7e23cb16 JM |
4876 | } |
4877 | ||
2ad9852d RK |
4878 | /* Return the "high pc" attribute value, typically associated with a subprogram |
4879 | DIE. Return null if the "high pc" attribute is either not present, or if it | |
4880 | cannot be represented as an assembler label identifier. */ | |
71dfc51f | 4881 | |
a96c67ec | 4882 | static inline const char * |
7080f735 | 4883 | get_AT_hi_pc (dw_die_ref die) |
a3f97cbb | 4884 | { |
b3694847 | 4885 | dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
2ad9852d | 4886 | |
40e8cc95 | 4887 | return a ? AT_lbl (a) : NULL; |
3f76745e JM |
4888 | } |
4889 | ||
4890 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
4891 | NULL if it is not present. */ | |
71dfc51f | 4892 | |
a96c67ec | 4893 | static inline const char * |
7080f735 | 4894 | get_AT_string (dw_die_ref die, enum dwarf_attribute attr_kind) |
3f76745e | 4895 | { |
b3694847 | 4896 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4897 | |
40e8cc95 | 4898 | return a ? AT_string (a) : NULL; |
a3f97cbb JW |
4899 | } |
4900 | ||
3f76745e JM |
4901 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
4902 | if it is not present. */ | |
71dfc51f | 4903 | |
3f76745e | 4904 | static inline int |
7080f735 | 4905 | get_AT_flag (dw_die_ref die, enum dwarf_attribute attr_kind) |
a3f97cbb | 4906 | { |
b3694847 | 4907 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4908 | |
40e8cc95 | 4909 | return a ? AT_flag (a) : 0; |
a3f97cbb JW |
4910 | } |
4911 | ||
3f76745e JM |
4912 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
4913 | if it is not present. */ | |
71dfc51f | 4914 | |
3f76745e | 4915 | static inline unsigned |
7080f735 | 4916 | get_AT_unsigned (dw_die_ref die, enum dwarf_attribute attr_kind) |
a3f97cbb | 4917 | { |
b3694847 | 4918 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4919 | |
40e8cc95 | 4920 | return a ? AT_unsigned (a) : 0; |
a96c67ec | 4921 | } |
71dfc51f | 4922 | |
a96c67ec | 4923 | static inline dw_die_ref |
7080f735 | 4924 | get_AT_ref (dw_die_ref die, enum dwarf_attribute attr_kind) |
a96c67ec | 4925 | { |
b3694847 | 4926 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4927 | |
40e8cc95 | 4928 | return a ? AT_ref (a) : NULL; |
3f76745e | 4929 | } |
71dfc51f | 4930 | |
c3cdeef4 JB |
4931 | /* Return TRUE if the language is C or C++. */ |
4932 | ||
4933 | static inline bool | |
7080f735 | 4934 | is_c_family (void) |
3f76745e | 4935 | { |
c3cdeef4 | 4936 | unsigned int lang = get_AT_unsigned (comp_unit_die, DW_AT_language); |
71dfc51f | 4937 | |
3f76745e JM |
4938 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
4939 | || lang == DW_LANG_C_plus_plus); | |
556273e0 | 4940 | } |
71dfc51f | 4941 | |
c3cdeef4 JB |
4942 | /* Return TRUE if the language is C++. */ |
4943 | ||
4944 | static inline bool | |
7080f735 | 4945 | is_cxx (void) |
1d3d6b1e JM |
4946 | { |
4947 | return (get_AT_unsigned (comp_unit_die, DW_AT_language) | |
4948 | == DW_LANG_C_plus_plus); | |
c26fbbca | 4949 | } |
1d3d6b1e | 4950 | |
c3cdeef4 JB |
4951 | /* Return TRUE if the language is Fortran. */ |
4952 | ||
4953 | static inline bool | |
7080f735 | 4954 | is_fortran (void) |
3f76745e | 4955 | { |
c3cdeef4 | 4956 | unsigned int lang = get_AT_unsigned (comp_unit_die, DW_AT_language); |
71dfc51f | 4957 | |
c3cdeef4 | 4958 | return lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90; |
556273e0 | 4959 | } |
71dfc51f | 4960 | |
c3cdeef4 JB |
4961 | /* Return TRUE if the language is Java. */ |
4962 | ||
4963 | static inline bool | |
7080f735 | 4964 | is_java (void) |
28985b81 | 4965 | { |
c3cdeef4 | 4966 | unsigned int lang = get_AT_unsigned (comp_unit_die, DW_AT_language); |
28985b81 | 4967 | |
c3cdeef4 JB |
4968 | return lang == DW_LANG_Java; |
4969 | } | |
4970 | ||
4971 | /* Return TRUE if the language is Ada. */ | |
4972 | ||
4973 | static inline bool | |
7080f735 | 4974 | is_ada (void) |
c3cdeef4 JB |
4975 | { |
4976 | unsigned int lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
7080f735 | 4977 | |
c3cdeef4 | 4978 | return lang == DW_LANG_Ada95 || lang == DW_LANG_Ada83; |
28985b81 AG |
4979 | } |
4980 | ||
10a11b75 | 4981 | /* Free up the memory used by A. */ |
71dfc51f | 4982 | |
7080f735 | 4983 | static inline void free_AT (dw_attr_ref); |
3f76745e | 4984 | static inline void |
7080f735 | 4985 | free_AT (dw_attr_ref a) |
10a11b75 | 4986 | { |
17211ab5 GK |
4987 | if (AT_class (a) == dw_val_class_str) |
4988 | if (a->dw_attr_val.v.val_str->refcount) | |
4989 | a->dw_attr_val.v.val_str->refcount--; | |
556273e0 | 4990 | } |
10a11b75 JM |
4991 | |
4992 | /* Remove the specified attribute if present. */ | |
4993 | ||
4994 | static void | |
7080f735 | 4995 | remove_AT (dw_die_ref die, enum dwarf_attribute attr_kind) |
3f76745e | 4996 | { |
b3694847 SS |
4997 | dw_attr_ref *p; |
4998 | dw_attr_ref removed = NULL; | |
a3f97cbb | 4999 | |
3f76745e JM |
5000 | if (die != NULL) |
5001 | { | |
a96c67ec JM |
5002 | for (p = &(die->die_attr); *p; p = &((*p)->dw_attr_next)) |
5003 | if ((*p)->dw_attr == attr_kind) | |
5004 | { | |
5005 | removed = *p; | |
5006 | *p = (*p)->dw_attr_next; | |
5007 | break; | |
5008 | } | |
71dfc51f | 5009 | |
a96c67ec | 5010 | if (removed != 0) |
10a11b75 JM |
5011 | free_AT (removed); |
5012 | } | |
5013 | } | |
71dfc51f | 5014 | |
10a11b75 | 5015 | /* Free up the memory used by DIE. */ |
71dfc51f | 5016 | |
10a11b75 | 5017 | static inline void |
7080f735 | 5018 | free_die (dw_die_ref die) |
10a11b75 JM |
5019 | { |
5020 | remove_children (die); | |
3f76745e | 5021 | } |
71dfc51f | 5022 | |
3f76745e | 5023 | /* Discard the children of this DIE. */ |
71dfc51f | 5024 | |
10a11b75 | 5025 | static void |
7080f735 | 5026 | remove_children (dw_die_ref die) |
3f76745e | 5027 | { |
b3694847 | 5028 | dw_die_ref child_die = die->die_child; |
3f76745e JM |
5029 | |
5030 | die->die_child = NULL; | |
3f76745e JM |
5031 | |
5032 | while (child_die != NULL) | |
a3f97cbb | 5033 | { |
b3694847 SS |
5034 | dw_die_ref tmp_die = child_die; |
5035 | dw_attr_ref a; | |
71dfc51f | 5036 | |
3f76745e | 5037 | child_die = child_die->die_sib; |
556273e0 KH |
5038 | |
5039 | for (a = tmp_die->die_attr; a != NULL;) | |
a3f97cbb | 5040 | { |
b3694847 | 5041 | dw_attr_ref tmp_a = a; |
71dfc51f | 5042 | |
3f76745e | 5043 | a = a->dw_attr_next; |
10a11b75 | 5044 | free_AT (tmp_a); |
a3f97cbb | 5045 | } |
71dfc51f | 5046 | |
10a11b75 | 5047 | free_die (tmp_die); |
3f76745e JM |
5048 | } |
5049 | } | |
71dfc51f | 5050 | |
a96c67ec | 5051 | /* Add a child DIE below its parent. We build the lists up in reverse |
881c6935 | 5052 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f | 5053 | |
3f76745e | 5054 | static inline void |
7080f735 | 5055 | add_child_die (dw_die_ref die, dw_die_ref child_die) |
3f76745e JM |
5056 | { |
5057 | if (die != NULL && child_die != NULL) | |
e90b62db | 5058 | { |
3a88cbd1 JL |
5059 | if (die == child_die) |
5060 | abort (); | |
2ad9852d | 5061 | |
3f76745e | 5062 | child_die->die_parent = die; |
a96c67ec JM |
5063 | child_die->die_sib = die->die_child; |
5064 | die->die_child = child_die; | |
3f76745e JM |
5065 | } |
5066 | } | |
5067 | ||
2081603c JM |
5068 | /* Move CHILD, which must be a child of PARENT or the DIE for which PARENT |
5069 | is the specification, to the front of PARENT's list of children. */ | |
10a11b75 JM |
5070 | |
5071 | static void | |
7080f735 | 5072 | splice_child_die (dw_die_ref parent, dw_die_ref child) |
10a11b75 JM |
5073 | { |
5074 | dw_die_ref *p; | |
5075 | ||
5076 | /* We want the declaration DIE from inside the class, not the | |
5077 | specification DIE at toplevel. */ | |
5078 | if (child->die_parent != parent) | |
2081603c JM |
5079 | { |
5080 | dw_die_ref tmp = get_AT_ref (child, DW_AT_specification); | |
2ad9852d | 5081 | |
2081603c JM |
5082 | if (tmp) |
5083 | child = tmp; | |
5084 | } | |
10a11b75 | 5085 | |
2081603c JM |
5086 | if (child->die_parent != parent |
5087 | && child->die_parent != get_AT_ref (parent, DW_AT_specification)) | |
10a11b75 JM |
5088 | abort (); |
5089 | ||
5de0e8d4 | 5090 | for (p = &(child->die_parent->die_child); *p; p = &((*p)->die_sib)) |
10a11b75 JM |
5091 | if (*p == child) |
5092 | { | |
5093 | *p = child->die_sib; | |
5094 | break; | |
5095 | } | |
5096 | ||
73c68f61 | 5097 | child->die_parent = parent; |
10a11b75 JM |
5098 | child->die_sib = parent->die_child; |
5099 | parent->die_child = child; | |
5100 | } | |
5101 | ||
3f76745e JM |
5102 | /* Return a pointer to a newly created DIE node. */ |
5103 | ||
5104 | static inline dw_die_ref | |
7080f735 | 5105 | new_die (enum dwarf_tag tag_value, dw_die_ref parent_die, tree t) |
3f76745e | 5106 | { |
703ad42b | 5107 | dw_die_ref die = ggc_alloc_cleared (sizeof (die_node)); |
3f76745e JM |
5108 | |
5109 | die->die_tag = tag_value; | |
3f76745e JM |
5110 | |
5111 | if (parent_die != NULL) | |
5112 | add_child_die (parent_die, die); | |
5113 | else | |
ef76d03b JW |
5114 | { |
5115 | limbo_die_node *limbo_node; | |
5116 | ||
17211ab5 | 5117 | limbo_node = ggc_alloc_cleared (sizeof (limbo_die_node)); |
ef76d03b | 5118 | limbo_node->die = die; |
54ba1f0d | 5119 | limbo_node->created_for = t; |
ef76d03b JW |
5120 | limbo_node->next = limbo_die_list; |
5121 | limbo_die_list = limbo_node; | |
5122 | } | |
71dfc51f | 5123 | |
3f76745e JM |
5124 | return die; |
5125 | } | |
71dfc51f | 5126 | |
3f76745e | 5127 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 5128 | |
3f76745e | 5129 | static inline dw_die_ref |
7080f735 | 5130 | lookup_type_die (tree type) |
3f76745e | 5131 | { |
e2500fed | 5132 | return TYPE_SYMTAB_DIE (type); |
3f76745e | 5133 | } |
e90b62db | 5134 | |
3f76745e | 5135 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 5136 | |
10a11b75 | 5137 | static inline void |
7080f735 | 5138 | equate_type_number_to_die (tree type, dw_die_ref type_die) |
3f76745e | 5139 | { |
e2500fed | 5140 | TYPE_SYMTAB_DIE (type) = type_die; |
3f76745e | 5141 | } |
71dfc51f | 5142 | |
3f76745e | 5143 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 5144 | |
3f76745e | 5145 | static inline dw_die_ref |
7080f735 | 5146 | lookup_decl_die (tree decl) |
3f76745e | 5147 | { |
b3694847 | 5148 | unsigned decl_id = DECL_UID (decl); |
3f76745e | 5149 | |
2ad9852d | 5150 | return (decl_id < decl_die_table_in_use ? decl_die_table[decl_id] : NULL); |
a3f97cbb JW |
5151 | } |
5152 | ||
3f76745e | 5153 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 5154 | |
3f76745e | 5155 | static void |
7080f735 | 5156 | equate_decl_number_to_die (tree decl, dw_die_ref decl_die) |
a3f97cbb | 5157 | { |
aea9695c RK |
5158 | unsigned int decl_id = DECL_UID (decl); |
5159 | unsigned int num_allocated; | |
d291dd49 | 5160 | |
3f76745e | 5161 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 5162 | { |
3f76745e JM |
5163 | num_allocated |
5164 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
5165 | / DECL_DIE_TABLE_INCREMENT) | |
5166 | * DECL_DIE_TABLE_INCREMENT; | |
5167 | ||
17211ab5 GK |
5168 | decl_die_table = ggc_realloc (decl_die_table, |
5169 | sizeof (dw_die_ref) * num_allocated); | |
3f76745e | 5170 | |
703ad42b | 5171 | memset (&decl_die_table[decl_die_table_allocated], 0, |
3f76745e JM |
5172 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); |
5173 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 5174 | } |
71dfc51f | 5175 | |
3f76745e JM |
5176 | if (decl_id >= decl_die_table_in_use) |
5177 | decl_die_table_in_use = (decl_id + 1); | |
5178 | ||
5179 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb | 5180 | } |
3f76745e JM |
5181 | \f |
5182 | /* Keep track of the number of spaces used to indent the | |
5183 | output of the debugging routines that print the structure of | |
5184 | the DIE internal representation. */ | |
5185 | static int print_indent; | |
71dfc51f | 5186 | |
3f76745e JM |
5187 | /* Indent the line the number of spaces given by print_indent. */ |
5188 | ||
5189 | static inline void | |
7080f735 | 5190 | print_spaces (FILE *outfile) |
3f76745e JM |
5191 | { |
5192 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
5193 | } |
5194 | ||
956d6950 | 5195 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 5196 | This routine is a debugging aid only. */ |
71dfc51f | 5197 | |
a3f97cbb | 5198 | static void |
7080f735 | 5199 | print_die (dw_die_ref die, FILE *outfile) |
a3f97cbb | 5200 | { |
b3694847 SS |
5201 | dw_attr_ref a; |
5202 | dw_die_ref c; | |
71dfc51f | 5203 | |
3f76745e | 5204 | print_spaces (outfile); |
2d8b0f3a | 5205 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
5206 | die->die_offset, dwarf_tag_name (die->die_tag)); |
5207 | print_spaces (outfile); | |
2d8b0f3a JL |
5208 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
5209 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
5210 | |
5211 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 5212 | { |
3f76745e JM |
5213 | print_spaces (outfile); |
5214 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
5215 | ||
a96c67ec | 5216 | switch (AT_class (a)) |
3f76745e JM |
5217 | { |
5218 | case dw_val_class_addr: | |
5219 | fprintf (outfile, "address"); | |
5220 | break; | |
a20612aa RH |
5221 | case dw_val_class_offset: |
5222 | fprintf (outfile, "offset"); | |
5223 | break; | |
3f76745e JM |
5224 | case dw_val_class_loc: |
5225 | fprintf (outfile, "location descriptor"); | |
5226 | break; | |
63e46568 | 5227 | case dw_val_class_loc_list: |
a20612aa RH |
5228 | fprintf (outfile, "location list -> label:%s", |
5229 | AT_loc_list (a)->ll_symbol); | |
63e46568 | 5230 | break; |
2bee6045 JJ |
5231 | case dw_val_class_range_list: |
5232 | fprintf (outfile, "range list"); | |
5233 | break; | |
3f76745e | 5234 | case dw_val_class_const: |
a96c67ec | 5235 | fprintf (outfile, "%ld", AT_int (a)); |
3f76745e JM |
5236 | break; |
5237 | case dw_val_class_unsigned_const: | |
a96c67ec | 5238 | fprintf (outfile, "%lu", AT_unsigned (a)); |
3f76745e JM |
5239 | break; |
5240 | case dw_val_class_long_long: | |
2d8b0f3a | 5241 | fprintf (outfile, "constant (%lu,%lu)", |
556273e0 KH |
5242 | a->dw_attr_val.v.val_long_long.hi, |
5243 | a->dw_attr_val.v.val_long_long.low); | |
3f76745e JM |
5244 | break; |
5245 | case dw_val_class_float: | |
5246 | fprintf (outfile, "floating-point constant"); | |
5247 | break; | |
5248 | case dw_val_class_flag: | |
a96c67ec | 5249 | fprintf (outfile, "%u", AT_flag (a)); |
3f76745e JM |
5250 | break; |
5251 | case dw_val_class_die_ref: | |
a96c67ec | 5252 | if (AT_ref (a) != NULL) |
881c6935 | 5253 | { |
1bfb5f8f | 5254 | if (AT_ref (a)->die_symbol) |
881c6935 JM |
5255 | fprintf (outfile, "die -> label: %s", AT_ref (a)->die_symbol); |
5256 | else | |
5257 | fprintf (outfile, "die -> %lu", AT_ref (a)->die_offset); | |
5258 | } | |
3f76745e JM |
5259 | else |
5260 | fprintf (outfile, "die -> <null>"); | |
5261 | break; | |
5262 | case dw_val_class_lbl_id: | |
8b790721 | 5263 | case dw_val_class_lbl_offset: |
a96c67ec | 5264 | fprintf (outfile, "label: %s", AT_lbl (a)); |
3f76745e | 5265 | break; |
3f76745e | 5266 | case dw_val_class_str: |
a96c67ec JM |
5267 | if (AT_string (a) != NULL) |
5268 | fprintf (outfile, "\"%s\"", AT_string (a)); | |
3f76745e JM |
5269 | else |
5270 | fprintf (outfile, "<null>"); | |
5271 | break; | |
e9a25f70 JL |
5272 | default: |
5273 | break; | |
3f76745e JM |
5274 | } |
5275 | ||
5276 | fprintf (outfile, "\n"); | |
5277 | } | |
5278 | ||
5279 | if (die->die_child != NULL) | |
5280 | { | |
5281 | print_indent += 4; | |
5282 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5283 | print_die (c, outfile); | |
71dfc51f | 5284 | |
3f76745e | 5285 | print_indent -= 4; |
a3f97cbb | 5286 | } |
881c6935 JM |
5287 | if (print_indent == 0) |
5288 | fprintf (outfile, "\n"); | |
a3f97cbb JW |
5289 | } |
5290 | ||
3f76745e JM |
5291 | /* Print the contents of the source code line number correspondence table. |
5292 | This routine is a debugging aid only. */ | |
71dfc51f | 5293 | |
3f76745e | 5294 | static void |
7080f735 | 5295 | print_dwarf_line_table (FILE *outfile) |
a3f97cbb | 5296 | { |
b3694847 SS |
5297 | unsigned i; |
5298 | dw_line_info_ref line_info; | |
3f76745e JM |
5299 | |
5300 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
2ad9852d | 5301 | for (i = 1; i < line_info_table_in_use; i++) |
a3f97cbb | 5302 | { |
3f76745e JM |
5303 | line_info = &line_info_table[i]; |
5304 | fprintf (outfile, "%5d: ", i); | |
c4274b22 RH |
5305 | fprintf (outfile, "%-20s", |
5306 | VARRAY_CHAR_PTR (file_table, line_info->dw_file_num)); | |
2d8b0f3a | 5307 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 5308 | fprintf (outfile, "\n"); |
a3f97cbb | 5309 | } |
3f76745e JM |
5310 | |
5311 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
5312 | } |
5313 | ||
3f76745e JM |
5314 | /* Print the information collected for a given DIE. */ |
5315 | ||
5316 | void | |
7080f735 | 5317 | debug_dwarf_die (dw_die_ref die) |
3f76745e JM |
5318 | { |
5319 | print_die (die, stderr); | |
5320 | } | |
5321 | ||
5322 | /* Print all DWARF information collected for the compilation unit. | |
5323 | This routine is a debugging aid only. */ | |
5324 | ||
5325 | void | |
7080f735 | 5326 | debug_dwarf (void) |
3f76745e JM |
5327 | { |
5328 | print_indent = 0; | |
5329 | print_die (comp_unit_die, stderr); | |
b2244e22 JW |
5330 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
5331 | print_dwarf_line_table (stderr); | |
3f76745e JM |
5332 | } |
5333 | \f | |
a96c67ec JM |
5334 | /* We build up the lists of children and attributes by pushing new ones |
5335 | onto the beginning of the list. Reverse the lists for DIE so that | |
5336 | they are in order of addition. */ | |
71dfc51f | 5337 | |
f37230f0 | 5338 | static void |
7080f735 | 5339 | reverse_die_lists (dw_die_ref die) |
f37230f0 | 5340 | { |
b3694847 SS |
5341 | dw_die_ref c, cp, cn; |
5342 | dw_attr_ref a, ap, an; | |
71dfc51f | 5343 | |
a96c67ec | 5344 | for (a = die->die_attr, ap = 0; a; a = an) |
7d9d8943 AM |
5345 | { |
5346 | an = a->dw_attr_next; | |
5347 | a->dw_attr_next = ap; | |
5348 | ap = a; | |
a3f97cbb | 5349 | } |
2ad9852d | 5350 | |
7d9d8943 | 5351 | die->die_attr = ap; |
3f76745e | 5352 | |
7d9d8943 AM |
5353 | for (c = die->die_child, cp = 0; c; c = cn) |
5354 | { | |
5355 | cn = c->die_sib; | |
5356 | c->die_sib = cp; | |
5357 | cp = c; | |
5358 | } | |
2ad9852d | 5359 | |
7d9d8943 | 5360 | die->die_child = cp; |
a3f97cbb JW |
5361 | } |
5362 | ||
2ad9852d RK |
5363 | /* reverse_die_lists only reverses the single die you pass it. Since we used to |
5364 | reverse all dies in add_sibling_attributes, which runs through all the dies, | |
5365 | it would reverse all the dies. Now, however, since we don't call | |
5366 | reverse_die_lists in add_sibling_attributes, we need a routine to | |
5367 | recursively reverse all the dies. This is that routine. */ | |
71dfc51f | 5368 | |
7d9d8943 | 5369 | static void |
7080f735 | 5370 | reverse_all_dies (dw_die_ref die) |
a3f97cbb | 5371 | { |
b3694847 | 5372 | dw_die_ref c; |
71dfc51f | 5373 | |
7d9d8943 | 5374 | reverse_die_lists (die); |
3f76745e | 5375 | |
881c6935 JM |
5376 | for (c = die->die_child; c; c = c->die_sib) |
5377 | reverse_all_dies (c); | |
5378 | } | |
5379 | ||
2ad9852d RK |
5380 | /* Start a new compilation unit DIE for an include file. OLD_UNIT is the CU |
5381 | for the enclosing include file, if any. BINCL_DIE is the DW_TAG_GNU_BINCL | |
5382 | DIE that marks the start of the DIEs for this include file. */ | |
881c6935 JM |
5383 | |
5384 | static dw_die_ref | |
7080f735 | 5385 | push_new_compile_unit (dw_die_ref old_unit, dw_die_ref bincl_die) |
881c6935 JM |
5386 | { |
5387 | const char *filename = get_AT_string (bincl_die, DW_AT_name); | |
5388 | dw_die_ref new_unit = gen_compile_unit_die (filename); | |
2ad9852d | 5389 | |
881c6935 JM |
5390 | new_unit->die_sib = old_unit; |
5391 | return new_unit; | |
5392 | } | |
5393 | ||
5394 | /* Close an include-file CU and reopen the enclosing one. */ | |
5395 | ||
5396 | static dw_die_ref | |
7080f735 | 5397 | pop_compile_unit (dw_die_ref old_unit) |
881c6935 JM |
5398 | { |
5399 | dw_die_ref new_unit = old_unit->die_sib; | |
2ad9852d | 5400 | |
881c6935 JM |
5401 | old_unit->die_sib = NULL; |
5402 | return new_unit; | |
5403 | } | |
5404 | ||
2ad9852d RK |
5405 | #define CHECKSUM(FOO) md5_process_bytes (&(FOO), sizeof (FOO), ctx) |
5406 | #define CHECKSUM_STRING(FOO) md5_process_bytes ((FOO), strlen (FOO), ctx) | |
881c6935 JM |
5407 | |
5408 | /* Calculate the checksum of a location expression. */ | |
5409 | ||
5410 | static inline void | |
7080f735 | 5411 | loc_checksum (dw_loc_descr_ref loc, struct md5_ctx *ctx) |
881c6935 | 5412 | { |
2ad9852d RK |
5413 | CHECKSUM (loc->dw_loc_opc); |
5414 | CHECKSUM (loc->dw_loc_oprnd1); | |
5415 | CHECKSUM (loc->dw_loc_oprnd2); | |
881c6935 JM |
5416 | } |
5417 | ||
5418 | /* Calculate the checksum of an attribute. */ | |
5419 | ||
5420 | static void | |
7080f735 | 5421 | attr_checksum (dw_attr_ref at, struct md5_ctx *ctx, int *mark) |
881c6935 JM |
5422 | { |
5423 | dw_loc_descr_ref loc; | |
5424 | rtx r; | |
5425 | ||
2ad9852d | 5426 | CHECKSUM (at->dw_attr); |
881c6935 JM |
5427 | |
5428 | /* We don't care about differences in file numbering. */ | |
5f632b5e JM |
5429 | if (at->dw_attr == DW_AT_decl_file |
5430 | /* Or that this was compiled with a different compiler snapshot; if | |
5431 | the output is the same, that's what matters. */ | |
5432 | || at->dw_attr == DW_AT_producer) | |
881c6935 JM |
5433 | return; |
5434 | ||
5435 | switch (AT_class (at)) | |
5436 | { | |
5437 | case dw_val_class_const: | |
2ad9852d | 5438 | CHECKSUM (at->dw_attr_val.v.val_int); |
881c6935 JM |
5439 | break; |
5440 | case dw_val_class_unsigned_const: | |
2ad9852d | 5441 | CHECKSUM (at->dw_attr_val.v.val_unsigned); |
881c6935 JM |
5442 | break; |
5443 | case dw_val_class_long_long: | |
2ad9852d | 5444 | CHECKSUM (at->dw_attr_val.v.val_long_long); |
881c6935 JM |
5445 | break; |
5446 | case dw_val_class_float: | |
2ad9852d | 5447 | CHECKSUM (at->dw_attr_val.v.val_float); |
881c6935 JM |
5448 | break; |
5449 | case dw_val_class_flag: | |
2ad9852d | 5450 | CHECKSUM (at->dw_attr_val.v.val_flag); |
881c6935 | 5451 | break; |
881c6935 | 5452 | case dw_val_class_str: |
2ad9852d | 5453 | CHECKSUM_STRING (AT_string (at)); |
881c6935 | 5454 | break; |
a20612aa | 5455 | |
881c6935 JM |
5456 | case dw_val_class_addr: |
5457 | r = AT_addr (at); | |
5458 | switch (GET_CODE (r)) | |
5459 | { | |
5460 | case SYMBOL_REF: | |
2ad9852d | 5461 | CHECKSUM_STRING (XSTR (r, 0)); |
881c6935 JM |
5462 | break; |
5463 | ||
5464 | default: | |
5465 | abort (); | |
5466 | } | |
5467 | break; | |
5468 | ||
a20612aa | 5469 | case dw_val_class_offset: |
2ad9852d | 5470 | CHECKSUM (at->dw_attr_val.v.val_offset); |
a20612aa RH |
5471 | break; |
5472 | ||
881c6935 JM |
5473 | case dw_val_class_loc: |
5474 | for (loc = AT_loc (at); loc; loc = loc->dw_loc_next) | |
5475 | loc_checksum (loc, ctx); | |
5476 | break; | |
5477 | ||
5478 | case dw_val_class_die_ref: | |
cc0017a9 ZD |
5479 | die_checksum (AT_ref (at), ctx, mark); |
5480 | break; | |
881c6935 JM |
5481 | |
5482 | case dw_val_class_fde_ref: | |
5483 | case dw_val_class_lbl_id: | |
5484 | case dw_val_class_lbl_offset: | |
a20612aa | 5485 | break; |
881c6935 JM |
5486 | |
5487 | default: | |
5488 | break; | |
5489 | } | |
5490 | } | |
5491 | ||
5492 | /* Calculate the checksum of a DIE. */ | |
5493 | ||
5494 | static void | |
7080f735 | 5495 | die_checksum (dw_die_ref die, struct md5_ctx *ctx, int *mark) |
881c6935 JM |
5496 | { |
5497 | dw_die_ref c; | |
5498 | dw_attr_ref a; | |
5499 | ||
cc0017a9 ZD |
5500 | /* To avoid infinite recursion. */ |
5501 | if (die->die_mark) | |
5502 | { | |
5503 | CHECKSUM (die->die_mark); | |
5504 | return; | |
5505 | } | |
5506 | die->die_mark = ++(*mark); | |
5507 | ||
2ad9852d | 5508 | CHECKSUM (die->die_tag); |
881c6935 JM |
5509 | |
5510 | for (a = die->die_attr; a; a = a->dw_attr_next) | |
cc0017a9 | 5511 | attr_checksum (a, ctx, mark); |
881c6935 JM |
5512 | |
5513 | for (c = die->die_child; c; c = c->die_sib) | |
cc0017a9 | 5514 | die_checksum (c, ctx, mark); |
881c6935 JM |
5515 | } |
5516 | ||
2ad9852d RK |
5517 | #undef CHECKSUM |
5518 | #undef CHECKSUM_STRING | |
881c6935 | 5519 | |
cc0017a9 ZD |
5520 | /* Do the location expressions look same? */ |
5521 | static inline int | |
7080f735 | 5522 | same_loc_p (dw_loc_descr_ref loc1, dw_loc_descr_ref loc2, int *mark) |
cc0017a9 ZD |
5523 | { |
5524 | return loc1->dw_loc_opc == loc2->dw_loc_opc | |
5525 | && same_dw_val_p (&loc1->dw_loc_oprnd1, &loc2->dw_loc_oprnd1, mark) | |
5526 | && same_dw_val_p (&loc1->dw_loc_oprnd2, &loc2->dw_loc_oprnd2, mark); | |
5527 | } | |
5528 | ||
5529 | /* Do the values look the same? */ | |
5530 | static int | |
7080f735 | 5531 | same_dw_val_p (dw_val_node *v1, dw_val_node *v2, int *mark) |
cc0017a9 ZD |
5532 | { |
5533 | dw_loc_descr_ref loc1, loc2; | |
5534 | rtx r1, r2; | |
5535 | unsigned i; | |
5536 | ||
5537 | if (v1->val_class != v2->val_class) | |
5538 | return 0; | |
5539 | ||
5540 | switch (v1->val_class) | |
5541 | { | |
5542 | case dw_val_class_const: | |
5543 | return v1->v.val_int == v2->v.val_int; | |
5544 | case dw_val_class_unsigned_const: | |
5545 | return v1->v.val_unsigned == v2->v.val_unsigned; | |
5546 | case dw_val_class_long_long: | |
5547 | return v1->v.val_long_long.hi == v2->v.val_long_long.hi | |
73c68f61 | 5548 | && v1->v.val_long_long.low == v2->v.val_long_long.low; |
cc0017a9 ZD |
5549 | case dw_val_class_float: |
5550 | if (v1->v.val_float.length != v2->v.val_float.length) | |
5551 | return 0; | |
5552 | for (i = 0; i < v1->v.val_float.length; i++) | |
73c68f61 | 5553 | if (v1->v.val_float.array[i] != v2->v.val_float.array[i]) |
cc0017a9 ZD |
5554 | return 0; |
5555 | return 1; | |
5556 | case dw_val_class_flag: | |
5557 | return v1->v.val_flag == v2->v.val_flag; | |
5558 | case dw_val_class_str: | |
17211ab5 | 5559 | return !strcmp(v1->v.val_str->str, v2->v.val_str->str); |
cc0017a9 ZD |
5560 | |
5561 | case dw_val_class_addr: | |
5562 | r1 = v1->v.val_addr; | |
5563 | r2 = v2->v.val_addr; | |
5564 | if (GET_CODE (r1) != GET_CODE (r2)) | |
5565 | return 0; | |
5566 | switch (GET_CODE (r1)) | |
5567 | { | |
5568 | case SYMBOL_REF: | |
5569 | return !strcmp (XSTR (r1, 0), XSTR (r2, 0)); | |
5570 | ||
5571 | default: | |
5572 | abort (); | |
5573 | } | |
5574 | ||
5575 | case dw_val_class_offset: | |
5576 | return v1->v.val_offset == v2->v.val_offset; | |
5577 | ||
5578 | case dw_val_class_loc: | |
5579 | for (loc1 = v1->v.val_loc, loc2 = v2->v.val_loc; | |
5580 | loc1 && loc2; | |
5581 | loc1 = loc1->dw_loc_next, loc2 = loc2->dw_loc_next) | |
5582 | if (!same_loc_p (loc1, loc2, mark)) | |
5583 | return 0; | |
5584 | return !loc1 && !loc2; | |
5585 | ||
5586 | case dw_val_class_die_ref: | |
5587 | return same_die_p (v1->v.val_die_ref.die, v2->v.val_die_ref.die, mark); | |
5588 | ||
5589 | case dw_val_class_fde_ref: | |
5590 | case dw_val_class_lbl_id: | |
5591 | case dw_val_class_lbl_offset: | |
5592 | return 1; | |
5593 | ||
5594 | default: | |
5595 | return 1; | |
5596 | } | |
5597 | } | |
5598 | ||
5599 | /* Do the attributes look the same? */ | |
5600 | ||
5601 | static int | |
7080f735 | 5602 | same_attr_p (dw_attr_ref at1, dw_attr_ref at2, int *mark) |
cc0017a9 ZD |
5603 | { |
5604 | if (at1->dw_attr != at2->dw_attr) | |
5605 | return 0; | |
5606 | ||
5607 | /* We don't care about differences in file numbering. */ | |
5608 | if (at1->dw_attr == DW_AT_decl_file | |
5609 | /* Or that this was compiled with a different compiler snapshot; if | |
5610 | the output is the same, that's what matters. */ | |
5611 | || at1->dw_attr == DW_AT_producer) | |
5612 | return 1; | |
5613 | ||
5614 | return same_dw_val_p (&at1->dw_attr_val, &at2->dw_attr_val, mark); | |
5615 | } | |
5616 | ||
5617 | /* Do the dies look the same? */ | |
5618 | ||
5619 | static int | |
7080f735 | 5620 | same_die_p (dw_die_ref die1, dw_die_ref die2, int *mark) |
cc0017a9 ZD |
5621 | { |
5622 | dw_die_ref c1, c2; | |
5623 | dw_attr_ref a1, a2; | |
5624 | ||
5625 | /* To avoid infinite recursion. */ | |
5626 | if (die1->die_mark) | |
5627 | return die1->die_mark == die2->die_mark; | |
5628 | die1->die_mark = die2->die_mark = ++(*mark); | |
5629 | ||
5630 | if (die1->die_tag != die2->die_tag) | |
5631 | return 0; | |
5632 | ||
5633 | for (a1 = die1->die_attr, a2 = die2->die_attr; | |
5634 | a1 && a2; | |
5635 | a1 = a1->dw_attr_next, a2 = a2->dw_attr_next) | |
5636 | if (!same_attr_p (a1, a2, mark)) | |
5637 | return 0; | |
5638 | if (a1 || a2) | |
5639 | return 0; | |
5640 | ||
5641 | for (c1 = die1->die_child, c2 = die2->die_child; | |
5642 | c1 && c2; | |
5643 | c1 = c1->die_sib, c2 = c2->die_sib) | |
5644 | if (!same_die_p (c1, c2, mark)) | |
5645 | return 0; | |
5646 | if (c1 || c2) | |
5647 | return 0; | |
5648 | ||
5649 | return 1; | |
5650 | } | |
5651 | ||
5652 | /* Do the dies look the same? Wrapper around same_die_p. */ | |
5653 | ||
5654 | static int | |
7080f735 | 5655 | same_die_p_wrap (dw_die_ref die1, dw_die_ref die2) |
cc0017a9 ZD |
5656 | { |
5657 | int mark = 0; | |
5658 | int ret = same_die_p (die1, die2, &mark); | |
5659 | ||
5660 | unmark_all_dies (die1); | |
5661 | unmark_all_dies (die2); | |
5662 | ||
5663 | return ret; | |
5664 | } | |
5665 | ||
881c6935 JM |
5666 | /* The prefix to attach to symbols on DIEs in the current comdat debug |
5667 | info section. */ | |
5668 | static char *comdat_symbol_id; | |
5669 | ||
5670 | /* The index of the current symbol within the current comdat CU. */ | |
5671 | static unsigned int comdat_symbol_number; | |
5672 | ||
5673 | /* Calculate the MD5 checksum of the compilation unit DIE UNIT_DIE and its | |
5674 | children, and set comdat_symbol_id accordingly. */ | |
5675 | ||
5676 | static void | |
7080f735 | 5677 | compute_section_prefix (dw_die_ref unit_die) |
881c6935 | 5678 | { |
cc0017a9 ZD |
5679 | const char *die_name = get_AT_string (unit_die, DW_AT_name); |
5680 | const char *base = die_name ? lbasename (die_name) : "anonymous"; | |
703ad42b | 5681 | char *name = alloca (strlen (base) + 64); |
f11c3043 | 5682 | char *p; |
cc0017a9 | 5683 | int i, mark; |
881c6935 JM |
5684 | unsigned char checksum[16]; |
5685 | struct md5_ctx ctx; | |
5686 | ||
f11c3043 RK |
5687 | /* Compute the checksum of the DIE, then append part of it as hex digits to |
5688 | the name filename of the unit. */ | |
5689 | ||
881c6935 | 5690 | md5_init_ctx (&ctx); |
cc0017a9 ZD |
5691 | mark = 0; |
5692 | die_checksum (unit_die, &ctx, &mark); | |
5693 | unmark_all_dies (unit_die); | |
881c6935 JM |
5694 | md5_finish_ctx (&ctx, checksum); |
5695 | ||
0023400b | 5696 | sprintf (name, "%s.", base); |
881c6935 JM |
5697 | clean_symbol_name (name); |
5698 | ||
2ad9852d RK |
5699 | p = name + strlen (name); |
5700 | for (i = 0; i < 4; i++) | |
5701 | { | |
5702 | sprintf (p, "%.2x", checksum[i]); | |
5703 | p += 2; | |
5704 | } | |
881c6935 JM |
5705 | |
5706 | comdat_symbol_id = unit_die->die_symbol = xstrdup (name); | |
5707 | comdat_symbol_number = 0; | |
5708 | } | |
5709 | ||
f11c3043 | 5710 | /* Returns nonzero if DIE represents a type, in the sense of TYPE_P. */ |
881c6935 JM |
5711 | |
5712 | static int | |
7080f735 | 5713 | is_type_die (dw_die_ref die) |
881c6935 JM |
5714 | { |
5715 | switch (die->die_tag) | |
5716 | { | |
5717 | case DW_TAG_array_type: | |
5718 | case DW_TAG_class_type: | |
5719 | case DW_TAG_enumeration_type: | |
5720 | case DW_TAG_pointer_type: | |
5721 | case DW_TAG_reference_type: | |
5722 | case DW_TAG_string_type: | |
5723 | case DW_TAG_structure_type: | |
5724 | case DW_TAG_subroutine_type: | |
5725 | case DW_TAG_union_type: | |
5726 | case DW_TAG_ptr_to_member_type: | |
5727 | case DW_TAG_set_type: | |
5728 | case DW_TAG_subrange_type: | |
5729 | case DW_TAG_base_type: | |
5730 | case DW_TAG_const_type: | |
5731 | case DW_TAG_file_type: | |
5732 | case DW_TAG_packed_type: | |
5733 | case DW_TAG_volatile_type: | |
cc0017a9 | 5734 | case DW_TAG_typedef: |
881c6935 JM |
5735 | return 1; |
5736 | default: | |
5737 | return 0; | |
5738 | } | |
5739 | } | |
5740 | ||
5741 | /* Returns 1 iff C is the sort of DIE that should go into a COMDAT CU. | |
5742 | Basically, we want to choose the bits that are likely to be shared between | |
5743 | compilations (types) and leave out the bits that are specific to individual | |
5744 | compilations (functions). */ | |
5745 | ||
5746 | static int | |
7080f735 | 5747 | is_comdat_die (dw_die_ref c) |
881c6935 | 5748 | { |
2ad9852d RK |
5749 | /* I think we want to leave base types and __vtbl_ptr_type in the main CU, as |
5750 | we do for stabs. The advantage is a greater likelihood of sharing between | |
5751 | objects that don't include headers in the same order (and therefore would | |
5752 | put the base types in a different comdat). jason 8/28/00 */ | |
5753 | ||
881c6935 JM |
5754 | if (c->die_tag == DW_TAG_base_type) |
5755 | return 0; | |
5756 | ||
5757 | if (c->die_tag == DW_TAG_pointer_type | |
5758 | || c->die_tag == DW_TAG_reference_type | |
5759 | || c->die_tag == DW_TAG_const_type | |
5760 | || c->die_tag == DW_TAG_volatile_type) | |
5761 | { | |
5762 | dw_die_ref t = get_AT_ref (c, DW_AT_type); | |
2ad9852d | 5763 | |
881c6935 JM |
5764 | return t ? is_comdat_die (t) : 0; |
5765 | } | |
881c6935 JM |
5766 | |
5767 | return is_type_die (c); | |
5768 | } | |
5769 | ||
5770 | /* Returns 1 iff C is the sort of DIE that might be referred to from another | |
5771 | compilation unit. */ | |
5772 | ||
5773 | static int | |
7080f735 | 5774 | is_symbol_die (dw_die_ref c) |
881c6935 | 5775 | { |
2ad9852d | 5776 | return (is_type_die (c) |
c26fbbca | 5777 | || (get_AT (c, DW_AT_declaration) |
2ad9852d | 5778 | && !get_AT (c, DW_AT_specification))); |
881c6935 JM |
5779 | } |
5780 | ||
5781 | static char * | |
7080f735 | 5782 | gen_internal_sym (const char *prefix) |
881c6935 JM |
5783 | { |
5784 | char buf[256]; | |
2ad9852d | 5785 | |
63e46568 | 5786 | ASM_GENERATE_INTERNAL_LABEL (buf, prefix, label_num++); |
881c6935 JM |
5787 | return xstrdup (buf); |
5788 | } | |
5789 | ||
5790 | /* Assign symbols to all worthy DIEs under DIE. */ | |
5791 | ||
5792 | static void | |
7080f735 | 5793 | assign_symbol_names (dw_die_ref die) |
881c6935 | 5794 | { |
b3694847 | 5795 | dw_die_ref c; |
881c6935 JM |
5796 | |
5797 | if (is_symbol_die (die)) | |
5798 | { | |
5799 | if (comdat_symbol_id) | |
5800 | { | |
5801 | char *p = alloca (strlen (comdat_symbol_id) + 64); | |
2ad9852d | 5802 | |
881c6935 JM |
5803 | sprintf (p, "%s.%s.%x", DIE_LABEL_PREFIX, |
5804 | comdat_symbol_id, comdat_symbol_number++); | |
5805 | die->die_symbol = xstrdup (p); | |
5806 | } | |
5807 | else | |
63e46568 | 5808 | die->die_symbol = gen_internal_sym ("LDIE"); |
881c6935 JM |
5809 | } |
5810 | ||
5811 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5812 | assign_symbol_names (c); | |
5813 | } | |
5814 | ||
cc0017a9 ZD |
5815 | struct cu_hash_table_entry |
5816 | { | |
5817 | dw_die_ref cu; | |
5818 | unsigned min_comdat_num, max_comdat_num; | |
5819 | struct cu_hash_table_entry *next; | |
5820 | }; | |
5821 | ||
5822 | /* Routines to manipulate hash table of CUs. */ | |
5823 | static hashval_t | |
7080f735 | 5824 | htab_cu_hash (const void *of) |
cc0017a9 ZD |
5825 | { |
5826 | const struct cu_hash_table_entry *entry = of; | |
5827 | ||
5828 | return htab_hash_string (entry->cu->die_symbol); | |
5829 | } | |
5830 | ||
5831 | static int | |
7080f735 | 5832 | htab_cu_eq (const void *of1, const void *of2) |
cc0017a9 ZD |
5833 | { |
5834 | const struct cu_hash_table_entry *entry1 = of1; | |
5835 | const struct die_struct *entry2 = of2; | |
5836 | ||
5837 | return !strcmp (entry1->cu->die_symbol, entry2->die_symbol); | |
5838 | } | |
5839 | ||
5840 | static void | |
7080f735 | 5841 | htab_cu_del (void *what) |
cc0017a9 ZD |
5842 | { |
5843 | struct cu_hash_table_entry *next, *entry = what; | |
5844 | ||
5845 | while (entry) | |
5846 | { | |
5847 | next = entry->next; | |
5848 | free (entry); | |
5849 | entry = next; | |
5850 | } | |
5851 | } | |
5852 | ||
5853 | /* Check whether we have already seen this CU and set up SYM_NUM | |
5854 | accordingly. */ | |
5855 | static int | |
7080f735 | 5856 | check_duplicate_cu (dw_die_ref cu, htab_t htable, unsigned int *sym_num) |
cc0017a9 ZD |
5857 | { |
5858 | struct cu_hash_table_entry dummy; | |
5859 | struct cu_hash_table_entry **slot, *entry, *last = &dummy; | |
5860 | ||
5861 | dummy.max_comdat_num = 0; | |
5862 | ||
5863 | slot = (struct cu_hash_table_entry **) | |
5864 | htab_find_slot_with_hash (htable, cu, htab_hash_string (cu->die_symbol), | |
5865 | INSERT); | |
5866 | entry = *slot; | |
5867 | ||
5868 | for (; entry; last = entry, entry = entry->next) | |
5869 | { | |
5870 | if (same_die_p_wrap (cu, entry->cu)) | |
5871 | break; | |
5872 | } | |
5873 | ||
5874 | if (entry) | |
5875 | { | |
5876 | *sym_num = entry->min_comdat_num; | |
5877 | return 1; | |
5878 | } | |
5879 | ||
5880 | entry = xcalloc (1, sizeof (struct cu_hash_table_entry)); | |
5881 | entry->cu = cu; | |
5882 | entry->min_comdat_num = *sym_num = last->max_comdat_num; | |
5883 | entry->next = *slot; | |
5884 | *slot = entry; | |
5885 | ||
5886 | return 0; | |
5887 | } | |
5888 | ||
5889 | /* Record SYM_NUM to record of CU in HTABLE. */ | |
5890 | static void | |
7080f735 | 5891 | record_comdat_symbol_number (dw_die_ref cu, htab_t htable, unsigned int sym_num) |
cc0017a9 ZD |
5892 | { |
5893 | struct cu_hash_table_entry **slot, *entry; | |
5894 | ||
5895 | slot = (struct cu_hash_table_entry **) | |
5896 | htab_find_slot_with_hash (htable, cu, htab_hash_string (cu->die_symbol), | |
5897 | NO_INSERT); | |
5898 | entry = *slot; | |
5899 | ||
5900 | entry->max_comdat_num = sym_num; | |
5901 | } | |
5902 | ||
881c6935 JM |
5903 | /* Traverse the DIE (which is always comp_unit_die), and set up |
5904 | additional compilation units for each of the include files we see | |
5905 | bracketed by BINCL/EINCL. */ | |
5906 | ||
5907 | static void | |
7080f735 | 5908 | break_out_includes (dw_die_ref die) |
881c6935 JM |
5909 | { |
5910 | dw_die_ref *ptr; | |
b3694847 | 5911 | dw_die_ref unit = NULL; |
cc0017a9 ZD |
5912 | limbo_die_node *node, **pnode; |
5913 | htab_t cu_hash_table; | |
881c6935 | 5914 | |
c26fbbca | 5915 | for (ptr = &(die->die_child); *ptr;) |
881c6935 | 5916 | { |
b3694847 | 5917 | dw_die_ref c = *ptr; |
881c6935 | 5918 | |
2ad9852d | 5919 | if (c->die_tag == DW_TAG_GNU_BINCL || c->die_tag == DW_TAG_GNU_EINCL |
881c6935 JM |
5920 | || (unit && is_comdat_die (c))) |
5921 | { | |
5922 | /* This DIE is for a secondary CU; remove it from the main one. */ | |
5923 | *ptr = c->die_sib; | |
5924 | ||
5925 | if (c->die_tag == DW_TAG_GNU_BINCL) | |
5926 | { | |
5927 | unit = push_new_compile_unit (unit, c); | |
5928 | free_die (c); | |
5929 | } | |
5930 | else if (c->die_tag == DW_TAG_GNU_EINCL) | |
5931 | { | |
5932 | unit = pop_compile_unit (unit); | |
5933 | free_die (c); | |
5934 | } | |
5935 | else | |
5936 | add_child_die (unit, c); | |
5937 | } | |
5938 | else | |
5939 | { | |
5940 | /* Leave this DIE in the main CU. */ | |
5941 | ptr = &(c->die_sib); | |
5942 | continue; | |
5943 | } | |
5944 | } | |
5945 | ||
5946 | #if 0 | |
5947 | /* We can only use this in debugging, since the frontend doesn't check | |
0b34cf1e | 5948 | to make sure that we leave every include file we enter. */ |
881c6935 JM |
5949 | if (unit != NULL) |
5950 | abort (); | |
5951 | #endif | |
5952 | ||
5953 | assign_symbol_names (die); | |
cc0017a9 ZD |
5954 | cu_hash_table = htab_create (10, htab_cu_hash, htab_cu_eq, htab_cu_del); |
5955 | for (node = limbo_die_list, pnode = &limbo_die_list; | |
5956 | node; | |
5957 | node = node->next) | |
881c6935 | 5958 | { |
cc0017a9 ZD |
5959 | int is_dupl; |
5960 | ||
881c6935 | 5961 | compute_section_prefix (node->die); |
cc0017a9 ZD |
5962 | is_dupl = check_duplicate_cu (node->die, cu_hash_table, |
5963 | &comdat_symbol_number); | |
881c6935 | 5964 | assign_symbol_names (node->die); |
cc0017a9 ZD |
5965 | if (is_dupl) |
5966 | *pnode = node->next; | |
5967 | else | |
73c68f61 | 5968 | { |
cc0017a9 ZD |
5969 | pnode = &node->next; |
5970 | record_comdat_symbol_number (node->die, cu_hash_table, | |
5971 | comdat_symbol_number); | |
5972 | } | |
881c6935 | 5973 | } |
cc0017a9 | 5974 | htab_delete (cu_hash_table); |
881c6935 JM |
5975 | } |
5976 | ||
5977 | /* Traverse the DIE and add a sibling attribute if it may have the | |
5978 | effect of speeding up access to siblings. To save some space, | |
5979 | avoid generating sibling attributes for DIE's without children. */ | |
5980 | ||
5981 | static void | |
7080f735 | 5982 | add_sibling_attributes (dw_die_ref die) |
881c6935 | 5983 | { |
b3694847 | 5984 | dw_die_ref c; |
881c6935 JM |
5985 | |
5986 | if (die->die_tag != DW_TAG_compile_unit | |
5987 | && die->die_sib && die->die_child != NULL) | |
7d9d8943 AM |
5988 | /* Add the sibling link to the front of the attribute list. */ |
5989 | add_AT_die_ref (die, DW_AT_sibling, die->die_sib); | |
5990 | ||
5991 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5992 | add_sibling_attributes (c); | |
5993 | } | |
5994 | ||
2ad9852d RK |
5995 | /* Output all location lists for the DIE and its children. */ |
5996 | ||
63e46568 | 5997 | static void |
7080f735 | 5998 | output_location_lists (dw_die_ref die) |
63e46568 DB |
5999 | { |
6000 | dw_die_ref c; | |
6001 | dw_attr_ref d_attr; | |
2ad9852d | 6002 | |
63e46568 | 6003 | for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next) |
2ad9852d RK |
6004 | if (AT_class (d_attr) == dw_val_class_loc_list) |
6005 | output_loc_list (AT_loc_list (d_attr)); | |
6006 | ||
63e46568 DB |
6007 | for (c = die->die_child; c != NULL; c = c->die_sib) |
6008 | output_location_lists (c); | |
6009 | ||
6010 | } | |
c26fbbca | 6011 | |
2ad9852d RK |
6012 | /* The format of each DIE (and its attribute value pairs) is encoded in an |
6013 | abbreviation table. This routine builds the abbreviation table and assigns | |
6014 | a unique abbreviation id for each abbreviation entry. The children of each | |
6015 | die are visited recursively. */ | |
7d9d8943 AM |
6016 | |
6017 | static void | |
7080f735 | 6018 | build_abbrev_table (dw_die_ref die) |
7d9d8943 | 6019 | { |
b3694847 SS |
6020 | unsigned long abbrev_id; |
6021 | unsigned int n_alloc; | |
6022 | dw_die_ref c; | |
6023 | dw_attr_ref d_attr, a_attr; | |
881c6935 JM |
6024 | |
6025 | /* Scan the DIE references, and mark as external any that refer to | |
1bfb5f8f | 6026 | DIEs from other CUs (i.e. those which are not marked). */ |
881c6935 | 6027 | for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next) |
2ad9852d RK |
6028 | if (AT_class (d_attr) == dw_val_class_die_ref |
6029 | && AT_ref (d_attr)->die_mark == 0) | |
6030 | { | |
6031 | if (AT_ref (d_attr)->die_symbol == 0) | |
6032 | abort (); | |
6033 | ||
6034 | set_AT_ref_external (d_attr, 1); | |
6035 | } | |
881c6935 | 6036 | |
7d9d8943 AM |
6037 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
6038 | { | |
b3694847 | 6039 | dw_die_ref abbrev = abbrev_die_table[abbrev_id]; |
7d9d8943 AM |
6040 | |
6041 | if (abbrev->die_tag == die->die_tag) | |
6042 | { | |
6043 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
6044 | { | |
6045 | a_attr = abbrev->die_attr; | |
6046 | d_attr = die->die_attr; | |
6047 | ||
6048 | while (a_attr != NULL && d_attr != NULL) | |
6049 | { | |
6050 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
6051 | || (value_format (a_attr) != value_format (d_attr))) | |
6052 | break; | |
6053 | ||
6054 | a_attr = a_attr->dw_attr_next; | |
6055 | d_attr = d_attr->dw_attr_next; | |
6056 | } | |
6057 | ||
6058 | if (a_attr == NULL && d_attr == NULL) | |
6059 | break; | |
6060 | } | |
6061 | } | |
6062 | } | |
6063 | ||
6064 | if (abbrev_id >= abbrev_die_table_in_use) | |
6065 | { | |
6066 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
6067 | { | |
6068 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; | |
17211ab5 GK |
6069 | abbrev_die_table = ggc_realloc (abbrev_die_table, |
6070 | sizeof (dw_die_ref) * n_alloc); | |
7d9d8943 | 6071 | |
703ad42b | 6072 | memset (&abbrev_die_table[abbrev_die_table_allocated], 0, |
7d9d8943 AM |
6073 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); |
6074 | abbrev_die_table_allocated = n_alloc; | |
6075 | } | |
6076 | ||
6077 | ++abbrev_die_table_in_use; | |
6078 | abbrev_die_table[abbrev_id] = die; | |
6079 | } | |
6080 | ||
6081 | die->die_abbrev = abbrev_id; | |
6082 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
6083 | build_abbrev_table (c); | |
6084 | } | |
6085 | \f | |
3f76745e JM |
6086 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ |
6087 | ||
6088 | static int | |
7080f735 | 6089 | constant_size (long unsigned int value) |
3f76745e JM |
6090 | { |
6091 | int log; | |
6092 | ||
6093 | if (value == 0) | |
6094 | log = 0; | |
a3f97cbb | 6095 | else |
3f76745e | 6096 | log = floor_log2 (value); |
71dfc51f | 6097 | |
3f76745e JM |
6098 | log = log / 8; |
6099 | log = 1 << (floor_log2 (log) + 1); | |
6100 | ||
6101 | return log; | |
a3f97cbb JW |
6102 | } |
6103 | ||
2ad9852d | 6104 | /* Return the size of a DIE as it is represented in the |
3f76745e | 6105 | .debug_info section. */ |
71dfc51f | 6106 | |
3f76745e | 6107 | static unsigned long |
7080f735 | 6108 | size_of_die (dw_die_ref die) |
a3f97cbb | 6109 | { |
b3694847 SS |
6110 | unsigned long size = 0; |
6111 | dw_attr_ref a; | |
71dfc51f | 6112 | |
3f76745e | 6113 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
6114 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
6115 | { | |
a96c67ec | 6116 | switch (AT_class (a)) |
a3f97cbb JW |
6117 | { |
6118 | case dw_val_class_addr: | |
a1a4189d | 6119 | size += DWARF2_ADDR_SIZE; |
a3f97cbb | 6120 | break; |
a20612aa RH |
6121 | case dw_val_class_offset: |
6122 | size += DWARF_OFFSET_SIZE; | |
6123 | break; | |
a3f97cbb | 6124 | case dw_val_class_loc: |
3f76745e | 6125 | { |
b3694847 | 6126 | unsigned long lsize = size_of_locs (AT_loc (a)); |
71dfc51f | 6127 | |
3f76745e JM |
6128 | /* Block length. */ |
6129 | size += constant_size (lsize); | |
6130 | size += lsize; | |
6131 | } | |
a3f97cbb | 6132 | break; |
63e46568 DB |
6133 | case dw_val_class_loc_list: |
6134 | size += DWARF_OFFSET_SIZE; | |
6135 | break; | |
2bee6045 JJ |
6136 | case dw_val_class_range_list: |
6137 | size += DWARF_OFFSET_SIZE; | |
6138 | break; | |
a3f97cbb | 6139 | case dw_val_class_const: |
25dd13ec | 6140 | size += size_of_sleb128 (AT_int (a)); |
a3f97cbb JW |
6141 | break; |
6142 | case dw_val_class_unsigned_const: | |
a96c67ec | 6143 | size += constant_size (AT_unsigned (a)); |
a3f97cbb | 6144 | break; |
469ac993 | 6145 | case dw_val_class_long_long: |
2e4b9b8c | 6146 | size += 1 + 2*HOST_BITS_PER_LONG/HOST_BITS_PER_CHAR; /* block */ |
469ac993 JM |
6147 | break; |
6148 | case dw_val_class_float: | |
3f76745e | 6149 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
6150 | break; |
6151 | case dw_val_class_flag: | |
3f76745e | 6152 | size += 1; |
a3f97cbb JW |
6153 | break; |
6154 | case dw_val_class_die_ref: | |
323658ea ZD |
6155 | if (AT_ref_external (a)) |
6156 | size += DWARF2_ADDR_SIZE; | |
6157 | else | |
6158 | size += DWARF_OFFSET_SIZE; | |
a3f97cbb JW |
6159 | break; |
6160 | case dw_val_class_fde_ref: | |
3f76745e | 6161 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
6162 | break; |
6163 | case dw_val_class_lbl_id: | |
a1a4189d | 6164 | size += DWARF2_ADDR_SIZE; |
3f76745e | 6165 | break; |
8b790721 | 6166 | case dw_val_class_lbl_offset: |
3f76745e JM |
6167 | size += DWARF_OFFSET_SIZE; |
6168 | break; | |
6169 | case dw_val_class_str: | |
9eb4015a JJ |
6170 | if (AT_string_form (a) == DW_FORM_strp) |
6171 | size += DWARF_OFFSET_SIZE; | |
6172 | else | |
17211ab5 | 6173 | size += strlen (a->dw_attr_val.v.val_str->str) + 1; |
3f76745e JM |
6174 | break; |
6175 | default: | |
6176 | abort (); | |
6177 | } | |
a3f97cbb | 6178 | } |
3f76745e JM |
6179 | |
6180 | return size; | |
a3f97cbb JW |
6181 | } |
6182 | ||
2ad9852d RK |
6183 | /* Size the debugging information associated with a given DIE. Visits the |
6184 | DIE's children recursively. Updates the global variable next_die_offset, on | |
6185 | each time through. Uses the current value of next_die_offset to update the | |
6186 | die_offset field in each DIE. */ | |
71dfc51f | 6187 | |
a3f97cbb | 6188 | static void |
7080f735 | 6189 | calc_die_sizes (dw_die_ref die) |
a3f97cbb | 6190 | { |
b3694847 | 6191 | dw_die_ref c; |
2ad9852d | 6192 | |
3f76745e JM |
6193 | die->die_offset = next_die_offset; |
6194 | next_die_offset += size_of_die (die); | |
71dfc51f | 6195 | |
3f76745e JM |
6196 | for (c = die->die_child; c != NULL; c = c->die_sib) |
6197 | calc_die_sizes (c); | |
71dfc51f | 6198 | |
3f76745e JM |
6199 | if (die->die_child != NULL) |
6200 | /* Count the null byte used to terminate sibling lists. */ | |
6201 | next_die_offset += 1; | |
a3f97cbb JW |
6202 | } |
6203 | ||
1bfb5f8f | 6204 | /* Set the marks for a die and its children. We do this so |
881c6935 | 6205 | that we know whether or not a reference needs to use FORM_ref_addr; only |
1bfb5f8f JM |
6206 | DIEs in the same CU will be marked. We used to clear out the offset |
6207 | and use that as the flag, but ran into ordering problems. */ | |
881c6935 JM |
6208 | |
6209 | static void | |
7080f735 | 6210 | mark_dies (dw_die_ref die) |
881c6935 | 6211 | { |
b3694847 | 6212 | dw_die_ref c; |
2ad9852d | 6213 | |
cc0017a9 ZD |
6214 | if (die->die_mark) |
6215 | abort (); | |
7080f735 | 6216 | |
1bfb5f8f JM |
6217 | die->die_mark = 1; |
6218 | for (c = die->die_child; c; c = c->die_sib) | |
6219 | mark_dies (c); | |
6220 | } | |
6221 | ||
6222 | /* Clear the marks for a die and its children. */ | |
6223 | ||
6224 | static void | |
7080f735 | 6225 | unmark_dies (dw_die_ref die) |
1bfb5f8f | 6226 | { |
b3694847 | 6227 | dw_die_ref c; |
2ad9852d | 6228 | |
cc0017a9 ZD |
6229 | if (!die->die_mark) |
6230 | abort (); | |
7080f735 | 6231 | |
1bfb5f8f | 6232 | die->die_mark = 0; |
881c6935 | 6233 | for (c = die->die_child; c; c = c->die_sib) |
1bfb5f8f | 6234 | unmark_dies (c); |
881c6935 JM |
6235 | } |
6236 | ||
cc0017a9 ZD |
6237 | /* Clear the marks for a die, its children and referred dies. */ |
6238 | ||
6239 | static void | |
7080f735 | 6240 | unmark_all_dies (dw_die_ref die) |
cc0017a9 ZD |
6241 | { |
6242 | dw_die_ref c; | |
6243 | dw_attr_ref a; | |
6244 | ||
6245 | if (!die->die_mark) | |
6246 | return; | |
6247 | die->die_mark = 0; | |
6248 | ||
6249 | for (c = die->die_child; c; c = c->die_sib) | |
6250 | unmark_all_dies (c); | |
6251 | ||
6252 | for (a = die->die_attr; a; a = a->dw_attr_next) | |
6253 | if (AT_class (a) == dw_val_class_die_ref) | |
6254 | unmark_all_dies (AT_ref (a)); | |
6255 | } | |
6256 | ||
3f76745e JM |
6257 | /* Return the size of the .debug_pubnames table generated for the |
6258 | compilation unit. */ | |
a94dbf2c | 6259 | |
3f76745e | 6260 | static unsigned long |
7080f735 | 6261 | size_of_pubnames (void) |
a94dbf2c | 6262 | { |
b3694847 SS |
6263 | unsigned long size; |
6264 | unsigned i; | |
469ac993 | 6265 | |
3f76745e | 6266 | size = DWARF_PUBNAMES_HEADER_SIZE; |
2ad9852d | 6267 | for (i = 0; i < pubname_table_in_use; i++) |
a94dbf2c | 6268 | { |
b3694847 | 6269 | pubname_ref p = &pubname_table[i]; |
9eb4015a | 6270 | size += DWARF_OFFSET_SIZE + strlen (p->name) + 1; |
a94dbf2c JM |
6271 | } |
6272 | ||
3f76745e JM |
6273 | size += DWARF_OFFSET_SIZE; |
6274 | return size; | |
a94dbf2c JM |
6275 | } |
6276 | ||
956d6950 | 6277 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 6278 | |
3f76745e | 6279 | static unsigned long |
7080f735 | 6280 | size_of_aranges (void) |
469ac993 | 6281 | { |
b3694847 | 6282 | unsigned long size; |
469ac993 | 6283 | |
3f76745e | 6284 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 6285 | |
3f76745e | 6286 | /* Count the address/length pair for this compilation unit. */ |
a1a4189d JB |
6287 | size += 2 * DWARF2_ADDR_SIZE; |
6288 | size += 2 * DWARF2_ADDR_SIZE * arange_table_in_use; | |
469ac993 | 6289 | |
3f76745e | 6290 | /* Count the two zero words used to terminated the address range table. */ |
a1a4189d | 6291 | size += 2 * DWARF2_ADDR_SIZE; |
3f76745e JM |
6292 | return size; |
6293 | } | |
6294 | \f | |
6295 | /* Select the encoding of an attribute value. */ | |
6296 | ||
6297 | static enum dwarf_form | |
7080f735 | 6298 | value_format (dw_attr_ref a) |
3f76745e | 6299 | { |
a96c67ec | 6300 | switch (a->dw_attr_val.val_class) |
469ac993 | 6301 | { |
3f76745e JM |
6302 | case dw_val_class_addr: |
6303 | return DW_FORM_addr; | |
2bee6045 | 6304 | case dw_val_class_range_list: |
a20612aa RH |
6305 | case dw_val_class_offset: |
6306 | if (DWARF_OFFSET_SIZE == 4) | |
6307 | return DW_FORM_data4; | |
6308 | if (DWARF_OFFSET_SIZE == 8) | |
6309 | return DW_FORM_data8; | |
6310 | abort (); | |
63e46568 | 6311 | case dw_val_class_loc_list: |
9d2f2c45 RH |
6312 | /* FIXME: Could be DW_FORM_data8, with a > 32 bit size |
6313 | .debug_loc section */ | |
6314 | return DW_FORM_data4; | |
3f76745e | 6315 | case dw_val_class_loc: |
a96c67ec | 6316 | switch (constant_size (size_of_locs (AT_loc (a)))) |
469ac993 | 6317 | { |
3f76745e JM |
6318 | case 1: |
6319 | return DW_FORM_block1; | |
6320 | case 2: | |
6321 | return DW_FORM_block2; | |
469ac993 JM |
6322 | default: |
6323 | abort (); | |
6324 | } | |
3f76745e | 6325 | case dw_val_class_const: |
25dd13ec | 6326 | return DW_FORM_sdata; |
3f76745e | 6327 | case dw_val_class_unsigned_const: |
a96c67ec | 6328 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
6329 | { |
6330 | case 1: | |
6331 | return DW_FORM_data1; | |
6332 | case 2: | |
6333 | return DW_FORM_data2; | |
6334 | case 4: | |
6335 | return DW_FORM_data4; | |
6336 | case 8: | |
6337 | return DW_FORM_data8; | |
6338 | default: | |
6339 | abort (); | |
6340 | } | |
6341 | case dw_val_class_long_long: | |
6342 | return DW_FORM_block1; | |
6343 | case dw_val_class_float: | |
6344 | return DW_FORM_block1; | |
6345 | case dw_val_class_flag: | |
6346 | return DW_FORM_flag; | |
6347 | case dw_val_class_die_ref: | |
881c6935 JM |
6348 | if (AT_ref_external (a)) |
6349 | return DW_FORM_ref_addr; | |
6350 | else | |
6351 | return DW_FORM_ref; | |
3f76745e JM |
6352 | case dw_val_class_fde_ref: |
6353 | return DW_FORM_data; | |
6354 | case dw_val_class_lbl_id: | |
6355 | return DW_FORM_addr; | |
8b790721 | 6356 | case dw_val_class_lbl_offset: |
3f76745e JM |
6357 | return DW_FORM_data; |
6358 | case dw_val_class_str: | |
9eb4015a | 6359 | return AT_string_form (a); |
a20612aa | 6360 | |
469ac993 JM |
6361 | default: |
6362 | abort (); | |
6363 | } | |
a94dbf2c JM |
6364 | } |
6365 | ||
3f76745e | 6366 | /* Output the encoding of an attribute value. */ |
469ac993 | 6367 | |
3f76745e | 6368 | static void |
7080f735 | 6369 | output_value_format (dw_attr_ref a) |
a94dbf2c | 6370 | { |
a96c67ec | 6371 | enum dwarf_form form = value_format (a); |
2ad9852d | 6372 | |
2e4b9b8c | 6373 | dw2_asm_output_data_uleb128 (form, "(%s)", dwarf_form_name (form)); |
3f76745e | 6374 | } |
469ac993 | 6375 | |
3f76745e JM |
6376 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
6377 | table. */ | |
469ac993 | 6378 | |
3f76745e | 6379 | static void |
7080f735 | 6380 | output_abbrev_section (void) |
3f76745e JM |
6381 | { |
6382 | unsigned long abbrev_id; | |
71dfc51f | 6383 | |
3f76745e | 6384 | dw_attr_ref a_attr; |
2ad9852d | 6385 | |
3f76745e JM |
6386 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
6387 | { | |
b3694847 | 6388 | dw_die_ref abbrev = abbrev_die_table[abbrev_id]; |
71dfc51f | 6389 | |
2e4b9b8c | 6390 | dw2_asm_output_data_uleb128 (abbrev_id, "(abbrev code)"); |
2e4b9b8c RH |
6391 | dw2_asm_output_data_uleb128 (abbrev->die_tag, "(TAG: %s)", |
6392 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 6393 | |
2e4b9b8c RH |
6394 | if (abbrev->die_child != NULL) |
6395 | dw2_asm_output_data (1, DW_children_yes, "DW_children_yes"); | |
6396 | else | |
6397 | dw2_asm_output_data (1, DW_children_no, "DW_children_no"); | |
3f76745e JM |
6398 | |
6399 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
6400 | a_attr = a_attr->dw_attr_next) | |
6401 | { | |
2e4b9b8c RH |
6402 | dw2_asm_output_data_uleb128 (a_attr->dw_attr, "(%s)", |
6403 | dwarf_attr_name (a_attr->dw_attr)); | |
a96c67ec | 6404 | output_value_format (a_attr); |
469ac993 | 6405 | } |
469ac993 | 6406 | |
2e4b9b8c RH |
6407 | dw2_asm_output_data (1, 0, NULL); |
6408 | dw2_asm_output_data (1, 0, NULL); | |
469ac993 | 6409 | } |
81f374eb HPN |
6410 | |
6411 | /* Terminate the table. */ | |
2e4b9b8c | 6412 | dw2_asm_output_data (1, 0, NULL); |
a94dbf2c JM |
6413 | } |
6414 | ||
881c6935 JM |
6415 | /* Output a symbol we can use to refer to this DIE from another CU. */ |
6416 | ||
6417 | static inline void | |
7080f735 | 6418 | output_die_symbol (dw_die_ref die) |
881c6935 JM |
6419 | { |
6420 | char *sym = die->die_symbol; | |
6421 | ||
6422 | if (sym == 0) | |
6423 | return; | |
6424 | ||
6425 | if (strncmp (sym, DIE_LABEL_PREFIX, sizeof (DIE_LABEL_PREFIX) - 1) == 0) | |
6426 | /* We make these global, not weak; if the target doesn't support | |
6427 | .linkonce, it doesn't support combining the sections, so debugging | |
6428 | will break. */ | |
5eb99654 | 6429 | (*targetm.asm_out.globalize_label) (asm_out_file, sym); |
2ad9852d | 6430 | |
881c6935 JM |
6431 | ASM_OUTPUT_LABEL (asm_out_file, sym); |
6432 | } | |
6433 | ||
84a5b4f8 | 6434 | /* Return a new location list, given the begin and end range, and the |
2ad9852d RK |
6435 | expression. gensym tells us whether to generate a new internal symbol for |
6436 | this location list node, which is done for the head of the list only. */ | |
6437 | ||
84a5b4f8 | 6438 | static inline dw_loc_list_ref |
7080f735 AJ |
6439 | new_loc_list (dw_loc_descr_ref expr, const char *begin, const char *end, |
6440 | const char *section, unsigned int gensym) | |
84a5b4f8 | 6441 | { |
17211ab5 | 6442 | dw_loc_list_ref retlist = ggc_alloc_cleared (sizeof (dw_loc_list_node)); |
2ad9852d | 6443 | |
84a5b4f8 DB |
6444 | retlist->begin = begin; |
6445 | retlist->end = end; | |
6446 | retlist->expr = expr; | |
6447 | retlist->section = section; | |
c26fbbca | 6448 | if (gensym) |
84a5b4f8 | 6449 | retlist->ll_symbol = gen_internal_sym ("LLST"); |
2ad9852d | 6450 | |
84a5b4f8 DB |
6451 | return retlist; |
6452 | } | |
6453 | ||
f9da5064 | 6454 | /* Add a location description expression to a location list. */ |
2ad9852d | 6455 | |
84a5b4f8 | 6456 | static inline void |
7080f735 AJ |
6457 | add_loc_descr_to_loc_list (dw_loc_list_ref *list_head, dw_loc_descr_ref descr, |
6458 | const char *begin, const char *end, | |
6459 | const char *section) | |
84a5b4f8 | 6460 | { |
b3694847 | 6461 | dw_loc_list_ref *d; |
c26fbbca | 6462 | |
30f7a378 | 6463 | /* Find the end of the chain. */ |
84a5b4f8 DB |
6464 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) |
6465 | ; | |
2ad9852d | 6466 | |
f9da5064 | 6467 | /* Add a new location list node to the list. */ |
84a5b4f8 DB |
6468 | *d = new_loc_list (descr, begin, end, section, 0); |
6469 | } | |
6470 | ||
f9da5064 | 6471 | /* Output the location list given to us. */ |
2ad9852d | 6472 | |
63e46568 | 6473 | static void |
7080f735 | 6474 | output_loc_list (dw_loc_list_ref list_head) |
63e46568 | 6475 | { |
2ad9852d RK |
6476 | dw_loc_list_ref curr = list_head; |
6477 | ||
63e46568 | 6478 | ASM_OUTPUT_LABEL (asm_out_file, list_head->ll_symbol); |
a20612aa RH |
6479 | |
6480 | /* ??? This shouldn't be needed now that we've forced the | |
6481 | compilation unit base address to zero when there is code | |
6482 | in more than one section. */ | |
63e46568 DB |
6483 | if (strcmp (curr->section, ".text") == 0) |
6484 | { | |
aafdcfcd | 6485 | /* dw2_asm_output_data will mask off any extra bits in the ~0. */ |
c4f2c499 | 6486 | dw2_asm_output_data (DWARF2_ADDR_SIZE, ~(unsigned HOST_WIDE_INT) 0, |
aafdcfcd NS |
6487 | "Location list base address specifier fake entry"); |
6488 | dw2_asm_output_offset (DWARF2_ADDR_SIZE, curr->section, | |
6489 | "Location list base address specifier base"); | |
63e46568 | 6490 | } |
2ad9852d | 6491 | |
c26fbbca | 6492 | for (curr = list_head; curr != NULL; curr = curr->dw_loc_next) |
63e46568 | 6493 | { |
2bee6045 | 6494 | unsigned long size; |
2ad9852d | 6495 | |
aafdcfcd NS |
6496 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, curr->begin, curr->section, |
6497 | "Location list begin address (%s)", | |
6498 | list_head->ll_symbol); | |
6499 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, curr->end, curr->section, | |
6500 | "Location list end address (%s)", | |
6501 | list_head->ll_symbol); | |
63e46568 | 6502 | size = size_of_locs (curr->expr); |
c26fbbca | 6503 | |
63e46568 | 6504 | /* Output the block length for this list of location operations. */ |
2bee6045 JJ |
6505 | if (size > 0xffff) |
6506 | abort (); | |
6507 | dw2_asm_output_data (2, size, "%s", "Location expression size"); | |
6508 | ||
63e46568 DB |
6509 | output_loc_sequence (curr->expr); |
6510 | } | |
2ad9852d | 6511 | |
aafdcfcd NS |
6512 | dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, |
6513 | "Location list terminator begin (%s)", | |
6514 | list_head->ll_symbol); | |
6515 | dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, | |
6516 | "Location list terminator end (%s)", | |
6517 | list_head->ll_symbol); | |
63e46568 | 6518 | } |
9eb4015a | 6519 | |
3f76745e JM |
6520 | /* Output the DIE and its attributes. Called recursively to generate |
6521 | the definitions of each child DIE. */ | |
71dfc51f | 6522 | |
a3f97cbb | 6523 | static void |
7080f735 | 6524 | output_die (dw_die_ref die) |
a3f97cbb | 6525 | { |
b3694847 SS |
6526 | dw_attr_ref a; |
6527 | dw_die_ref c; | |
6528 | unsigned long size; | |
a94dbf2c | 6529 | |
881c6935 JM |
6530 | /* If someone in another CU might refer to us, set up a symbol for |
6531 | them to point to. */ | |
6532 | if (die->die_symbol) | |
6533 | output_die_symbol (die); | |
6534 | ||
2e4b9b8c RH |
6535 | dw2_asm_output_data_uleb128 (die->die_abbrev, "(DIE (0x%lx) %s)", |
6536 | die->die_offset, dwarf_tag_name (die->die_tag)); | |
a94dbf2c | 6537 | |
3f76745e | 6538 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 6539 | { |
2e4b9b8c RH |
6540 | const char *name = dwarf_attr_name (a->dw_attr); |
6541 | ||
a96c67ec | 6542 | switch (AT_class (a)) |
3f76745e JM |
6543 | { |
6544 | case dw_val_class_addr: | |
2e4b9b8c | 6545 | dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, AT_addr (a), "%s", name); |
3f76745e | 6546 | break; |
a3f97cbb | 6547 | |
a20612aa RH |
6548 | case dw_val_class_offset: |
6549 | dw2_asm_output_data (DWARF_OFFSET_SIZE, a->dw_attr_val.v.val_offset, | |
6550 | "%s", name); | |
6551 | break; | |
6552 | ||
2bee6045 JJ |
6553 | case dw_val_class_range_list: |
6554 | { | |
6555 | char *p = strchr (ranges_section_label, '\0'); | |
6556 | ||
6557 | sprintf (p, "+0x%lx", a->dw_attr_val.v.val_offset); | |
6558 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, ranges_section_label, | |
6559 | "%s", name); | |
6560 | *p = '\0'; | |
6561 | } | |
6562 | break; | |
6563 | ||
3f76745e | 6564 | case dw_val_class_loc: |
a96c67ec | 6565 | size = size_of_locs (AT_loc (a)); |
71dfc51f | 6566 | |
3f76745e | 6567 | /* Output the block length for this list of location operations. */ |
2e4b9b8c | 6568 | dw2_asm_output_data (constant_size (size), size, "%s", name); |
71dfc51f | 6569 | |
7d9d8943 | 6570 | output_loc_sequence (AT_loc (a)); |
a3f97cbb | 6571 | break; |
3f76745e JM |
6572 | |
6573 | case dw_val_class_const: | |
25dd13ec JW |
6574 | /* ??? It would be slightly more efficient to use a scheme like is |
6575 | used for unsigned constants below, but gdb 4.x does not sign | |
6576 | extend. Gdb 5.x does sign extend. */ | |
2e4b9b8c | 6577 | dw2_asm_output_data_sleb128 (AT_int (a), "%s", name); |
a3f97cbb | 6578 | break; |
3f76745e JM |
6579 | |
6580 | case dw_val_class_unsigned_const: | |
2e4b9b8c RH |
6581 | dw2_asm_output_data (constant_size (AT_unsigned (a)), |
6582 | AT_unsigned (a), "%s", name); | |
a3f97cbb | 6583 | break; |
3f76745e JM |
6584 | |
6585 | case dw_val_class_long_long: | |
2e4b9b8c RH |
6586 | { |
6587 | unsigned HOST_WIDE_INT first, second; | |
3f76745e | 6588 | |
2ad9852d RK |
6589 | dw2_asm_output_data (1, |
6590 | 2 * HOST_BITS_PER_LONG / HOST_BITS_PER_CHAR, | |
c26fbbca | 6591 | "%s", name); |
556273e0 | 6592 | |
2e4b9b8c RH |
6593 | if (WORDS_BIG_ENDIAN) |
6594 | { | |
6595 | first = a->dw_attr_val.v.val_long_long.hi; | |
6596 | second = a->dw_attr_val.v.val_long_long.low; | |
6597 | } | |
6598 | else | |
6599 | { | |
6600 | first = a->dw_attr_val.v.val_long_long.low; | |
6601 | second = a->dw_attr_val.v.val_long_long.hi; | |
6602 | } | |
2ad9852d RK |
6603 | |
6604 | dw2_asm_output_data (HOST_BITS_PER_LONG / HOST_BITS_PER_CHAR, | |
2e4b9b8c | 6605 | first, "long long constant"); |
2ad9852d | 6606 | dw2_asm_output_data (HOST_BITS_PER_LONG / HOST_BITS_PER_CHAR, |
2e4b9b8c RH |
6607 | second, NULL); |
6608 | } | |
a3f97cbb | 6609 | break; |
3f76745e JM |
6610 | |
6611 | case dw_val_class_float: | |
c84e2712 | 6612 | { |
b3694847 | 6613 | unsigned int i; |
c84e2712 | 6614 | |
2e4b9b8c | 6615 | dw2_asm_output_data (1, a->dw_attr_val.v.val_float.length * 4, |
c26fbbca | 6616 | "%s", name); |
c84e2712 | 6617 | |
2ad9852d | 6618 | for (i = 0; i < a->dw_attr_val.v.val_float.length; i++) |
2e4b9b8c RH |
6619 | dw2_asm_output_data (4, a->dw_attr_val.v.val_float.array[i], |
6620 | "fp constant word %u", i); | |
556273e0 | 6621 | break; |
c84e2712 | 6622 | } |
3f76745e JM |
6623 | |
6624 | case dw_val_class_flag: | |
2e4b9b8c | 6625 | dw2_asm_output_data (1, AT_flag (a), "%s", name); |
a3f97cbb | 6626 | break; |
a20612aa | 6627 | |
c26fbbca | 6628 | case dw_val_class_loc_list: |
63e46568 DB |
6629 | { |
6630 | char *sym = AT_loc_list (a)->ll_symbol; | |
2ad9852d | 6631 | |
63e46568 | 6632 | if (sym == 0) |
173bf5be | 6633 | abort (); |
a20612aa RH |
6634 | dw2_asm_output_delta (DWARF_OFFSET_SIZE, sym, |
6635 | loc_section_label, "%s", name); | |
63e46568 DB |
6636 | } |
6637 | break; | |
a20612aa | 6638 | |
3f76745e | 6639 | case dw_val_class_die_ref: |
881c6935 | 6640 | if (AT_ref_external (a)) |
2e4b9b8c RH |
6641 | { |
6642 | char *sym = AT_ref (a)->die_symbol; | |
2ad9852d | 6643 | |
2e4b9b8c RH |
6644 | if (sym == 0) |
6645 | abort (); | |
6646 | dw2_asm_output_offset (DWARF2_ADDR_SIZE, sym, "%s", name); | |
6647 | } | |
3f4907a6 JM |
6648 | else if (AT_ref (a)->die_offset == 0) |
6649 | abort (); | |
881c6935 | 6650 | else |
2e4b9b8c RH |
6651 | dw2_asm_output_data (DWARF_OFFSET_SIZE, AT_ref (a)->die_offset, |
6652 | "%s", name); | |
a3f97cbb | 6653 | break; |
3f76745e JM |
6654 | |
6655 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
6656 | { |
6657 | char l1[20]; | |
2ad9852d | 6658 | |
2e4b9b8c RH |
6659 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_LABEL, |
6660 | a->dw_attr_val.v.val_fde_index * 2); | |
6661 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, l1, "%s", name); | |
a6ab3aad | 6662 | } |
a3f97cbb | 6663 | break; |
a3f97cbb | 6664 | |
3f76745e | 6665 | case dw_val_class_lbl_id: |
8e7fa2c8 | 6666 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, AT_lbl (a), "%s", name); |
3f76745e | 6667 | break; |
71dfc51f | 6668 | |
8b790721 | 6669 | case dw_val_class_lbl_offset: |
2e4b9b8c | 6670 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, AT_lbl (a), "%s", name); |
3f76745e | 6671 | break; |
a3f97cbb | 6672 | |
3f76745e | 6673 | case dw_val_class_str: |
9eb4015a JJ |
6674 | if (AT_string_form (a) == DW_FORM_strp) |
6675 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, | |
6676 | a->dw_attr_val.v.val_str->label, | |
a4cf1d85 | 6677 | "%s: \"%s\"", name, AT_string (a)); |
9eb4015a JJ |
6678 | else |
6679 | dw2_asm_output_nstring (AT_string (a), -1, "%s", name); | |
3f76745e | 6680 | break; |
b2932ae5 | 6681 | |
3f76745e JM |
6682 | default: |
6683 | abort (); | |
6684 | } | |
3f76745e | 6685 | } |
71dfc51f | 6686 | |
3f76745e JM |
6687 | for (c = die->die_child; c != NULL; c = c->die_sib) |
6688 | output_die (c); | |
71dfc51f | 6689 | |
2ad9852d | 6690 | /* Add null byte to terminate sibling list. */ |
3f76745e | 6691 | if (die->die_child != NULL) |
2ad9852d RK |
6692 | dw2_asm_output_data (1, 0, "end of children of DIE 0x%lx", |
6693 | die->die_offset); | |
3f76745e | 6694 | } |
71dfc51f | 6695 | |
3f76745e JM |
6696 | /* Output the compilation unit that appears at the beginning of the |
6697 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 6698 | |
3f76745e | 6699 | static void |
7080f735 | 6700 | output_compilation_unit_header (void) |
3f76745e | 6701 | { |
9eb0ef7a KB |
6702 | if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) |
6703 | dw2_asm_output_data (4, 0xffffffff, | |
6704 | "Initial length escape value indicating 64-bit DWARF extension"); | |
6705 | dw2_asm_output_data (DWARF_OFFSET_SIZE, | |
6706 | next_die_offset - DWARF_INITIAL_LENGTH_SIZE, | |
2e4b9b8c | 6707 | "Length of Compilation Unit Info"); |
2e4b9b8c | 6708 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF version number"); |
2e4b9b8c RH |
6709 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, abbrev_section_label, |
6710 | "Offset Into Abbrev. Section"); | |
2e4b9b8c | 6711 | dw2_asm_output_data (1, DWARF2_ADDR_SIZE, "Pointer Size (in bytes)"); |
a3f97cbb JW |
6712 | } |
6713 | ||
881c6935 JM |
6714 | /* Output the compilation unit DIE and its children. */ |
6715 | ||
6716 | static void | |
7080f735 | 6717 | output_comp_unit (dw_die_ref die, int output_if_empty) |
881c6935 | 6718 | { |
ce1cc601 | 6719 | const char *secname; |
cc0017a9 ZD |
6720 | char *oldsym, *tmp; |
6721 | ||
6722 | /* Unless we are outputting main CU, we may throw away empty ones. */ | |
6723 | if (!output_if_empty && die->die_child == NULL) | |
6724 | return; | |
881c6935 | 6725 | |
2ad9852d RK |
6726 | /* Even if there are no children of this DIE, we must output the information |
6727 | about the compilation unit. Otherwise, on an empty translation unit, we | |
6728 | will generate a present, but empty, .debug_info section. IRIX 6.5 `nm' | |
6729 | will then complain when examining the file. First mark all the DIEs in | |
6730 | this CU so we know which get local refs. */ | |
1bfb5f8f JM |
6731 | mark_dies (die); |
6732 | ||
6733 | build_abbrev_table (die); | |
6734 | ||
6d2f8887 | 6735 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
881c6935 JM |
6736 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; |
6737 | calc_die_sizes (die); | |
6738 | ||
cc0017a9 ZD |
6739 | oldsym = die->die_symbol; |
6740 | if (oldsym) | |
881c6935 | 6741 | { |
703ad42b | 6742 | tmp = alloca (strlen (oldsym) + 24); |
2ad9852d | 6743 | |
cc0017a9 | 6744 | sprintf (tmp, ".gnu.linkonce.wi.%s", oldsym); |
ce1cc601 | 6745 | secname = tmp; |
881c6935 JM |
6746 | die->die_symbol = NULL; |
6747 | } | |
6748 | else | |
ce1cc601 | 6749 | secname = (const char *) DEBUG_INFO_SECTION; |
881c6935 JM |
6750 | |
6751 | /* Output debugging information. */ | |
715bdd29 | 6752 | named_section_flags (secname, SECTION_DEBUG); |
881c6935 JM |
6753 | output_compilation_unit_header (); |
6754 | output_die (die); | |
6755 | ||
1bfb5f8f JM |
6756 | /* Leave the marks on the main CU, so we can check them in |
6757 | output_pubnames. */ | |
cc0017a9 ZD |
6758 | if (oldsym) |
6759 | { | |
6760 | unmark_dies (die); | |
6761 | die->die_symbol = oldsym; | |
6762 | } | |
881c6935 JM |
6763 | } |
6764 | ||
7afff7cf NB |
6765 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The |
6766 | output of lang_hooks.decl_printable_name for C++ looks like | |
6767 | "A::f(int)". Let's drop the argument list, and maybe the scope. */ | |
a1d7ffe3 | 6768 | |
d560ee52 | 6769 | static const char * |
7080f735 | 6770 | dwarf2_name (tree decl, int scope) |
a1d7ffe3 | 6771 | { |
7afff7cf | 6772 | return (*lang_hooks.decl_printable_name) (decl, scope ? 1 : 0); |
a1d7ffe3 JM |
6773 | } |
6774 | ||
d291dd49 | 6775 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 6776 | |
d291dd49 | 6777 | static void |
7080f735 | 6778 | add_pubname (tree decl, dw_die_ref die) |
d291dd49 JM |
6779 | { |
6780 | pubname_ref p; | |
6781 | ||
6782 | if (! TREE_PUBLIC (decl)) | |
6783 | return; | |
6784 | ||
6785 | if (pubname_table_in_use == pubname_table_allocated) | |
6786 | { | |
6787 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
2ad9852d | 6788 | pubname_table |
703ad42b KG |
6789 | = ggc_realloc (pubname_table, |
6790 | (pubname_table_allocated * sizeof (pubname_entry))); | |
17211ab5 GK |
6791 | memset (pubname_table + pubname_table_in_use, 0, |
6792 | PUBNAME_TABLE_INCREMENT * sizeof (pubname_entry)); | |
d291dd49 | 6793 | } |
71dfc51f | 6794 | |
d291dd49 JM |
6795 | p = &pubname_table[pubname_table_in_use++]; |
6796 | p->die = die; | |
a1d7ffe3 | 6797 | p->name = xstrdup (dwarf2_name (decl, 1)); |
d291dd49 JM |
6798 | } |
6799 | ||
a3f97cbb JW |
6800 | /* Output the public names table used to speed up access to externally |
6801 | visible names. For now, only generate entries for externally | |
6802 | visible procedures. */ | |
71dfc51f | 6803 | |
a3f97cbb | 6804 | static void |
7080f735 | 6805 | output_pubnames (void) |
a3f97cbb | 6806 | { |
b3694847 SS |
6807 | unsigned i; |
6808 | unsigned long pubnames_length = size_of_pubnames (); | |
71dfc51f | 6809 | |
9eb0ef7a KB |
6810 | if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) |
6811 | dw2_asm_output_data (4, 0xffffffff, | |
6812 | "Initial length escape value indicating 64-bit DWARF extension"); | |
2e4b9b8c RH |
6813 | dw2_asm_output_data (DWARF_OFFSET_SIZE, pubnames_length, |
6814 | "Length of Public Names Info"); | |
2e4b9b8c | 6815 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); |
2e4b9b8c RH |
6816 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, debug_info_section_label, |
6817 | "Offset of Compilation Unit Info"); | |
2e4b9b8c RH |
6818 | dw2_asm_output_data (DWARF_OFFSET_SIZE, next_die_offset, |
6819 | "Compilation Unit Length"); | |
71dfc51f | 6820 | |
2ad9852d | 6821 | for (i = 0; i < pubname_table_in_use; i++) |
a3f97cbb | 6822 | { |
b3694847 | 6823 | pubname_ref pub = &pubname_table[i]; |
71dfc51f | 6824 | |
881c6935 | 6825 | /* We shouldn't see pubnames for DIEs outside of the main CU. */ |
1bfb5f8f | 6826 | if (pub->die->die_mark == 0) |
881c6935 JM |
6827 | abort (); |
6828 | ||
2e4b9b8c RH |
6829 | dw2_asm_output_data (DWARF_OFFSET_SIZE, pub->die->die_offset, |
6830 | "DIE offset"); | |
71dfc51f | 6831 | |
2e4b9b8c | 6832 | dw2_asm_output_nstring (pub->name, -1, "external name"); |
a3f97cbb | 6833 | } |
71dfc51f | 6834 | |
2e4b9b8c | 6835 | dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, NULL); |
a3f97cbb JW |
6836 | } |
6837 | ||
d291dd49 | 6838 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 6839 | |
d291dd49 | 6840 | static void |
7080f735 | 6841 | add_arange (tree decl, dw_die_ref die) |
d291dd49 JM |
6842 | { |
6843 | if (! DECL_SECTION_NAME (decl)) | |
6844 | return; | |
6845 | ||
6846 | if (arange_table_in_use == arange_table_allocated) | |
6847 | { | |
6848 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
7080f735 AJ |
6849 | arange_table = ggc_realloc (arange_table, |
6850 | (arange_table_allocated | |
17211ab5 GK |
6851 | * sizeof (dw_die_ref))); |
6852 | memset (arange_table + arange_table_in_use, 0, | |
6853 | ARANGE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
d291dd49 | 6854 | } |
71dfc51f | 6855 | |
d291dd49 JM |
6856 | arange_table[arange_table_in_use++] = die; |
6857 | } | |
6858 | ||
a3f97cbb JW |
6859 | /* Output the information that goes into the .debug_aranges table. |
6860 | Namely, define the beginning and ending address range of the | |
6861 | text section generated for this compilation unit. */ | |
71dfc51f | 6862 | |
a3f97cbb | 6863 | static void |
7080f735 | 6864 | output_aranges (void) |
a3f97cbb | 6865 | { |
b3694847 SS |
6866 | unsigned i; |
6867 | unsigned long aranges_length = size_of_aranges (); | |
71dfc51f | 6868 | |
9eb0ef7a KB |
6869 | if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) |
6870 | dw2_asm_output_data (4, 0xffffffff, | |
6871 | "Initial length escape value indicating 64-bit DWARF extension"); | |
2e4b9b8c RH |
6872 | dw2_asm_output_data (DWARF_OFFSET_SIZE, aranges_length, |
6873 | "Length of Address Ranges Info"); | |
2e4b9b8c | 6874 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); |
2e4b9b8c RH |
6875 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, debug_info_section_label, |
6876 | "Offset of Compilation Unit Info"); | |
2e4b9b8c | 6877 | dw2_asm_output_data (1, DWARF2_ADDR_SIZE, "Size of Address"); |
2e4b9b8c | 6878 | dw2_asm_output_data (1, 0, "Size of Segment Descriptor"); |
71dfc51f | 6879 | |
262b6384 SC |
6880 | /* We need to align to twice the pointer size here. */ |
6881 | if (DWARF_ARANGES_PAD_SIZE) | |
6882 | { | |
2e4b9b8c | 6883 | /* Pad using a 2 byte words so that padding is correct for any |
73c68f61 | 6884 | pointer size. */ |
2e4b9b8c RH |
6885 | dw2_asm_output_data (2, 0, "Pad to %d byte boundary", |
6886 | 2 * DWARF2_ADDR_SIZE); | |
770ca8c6 | 6887 | for (i = 2; i < (unsigned) DWARF_ARANGES_PAD_SIZE; i += 2) |
2e4b9b8c | 6888 | dw2_asm_output_data (2, 0, NULL); |
262b6384 | 6889 | } |
71dfc51f | 6890 | |
8e7fa2c8 | 6891 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, text_section_label, "Address"); |
2e4b9b8c RH |
6892 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, text_end_label, |
6893 | text_section_label, "Length"); | |
71dfc51f | 6894 | |
2ad9852d | 6895 | for (i = 0; i < arange_table_in_use; i++) |
d291dd49 | 6896 | { |
e689ae67 | 6897 | dw_die_ref die = arange_table[i]; |
71dfc51f | 6898 | |
881c6935 | 6899 | /* We shouldn't see aranges for DIEs outside of the main CU. */ |
1bfb5f8f | 6900 | if (die->die_mark == 0) |
881c6935 JM |
6901 | abort (); |
6902 | ||
e689ae67 | 6903 | if (die->die_tag == DW_TAG_subprogram) |
2e4b9b8c | 6904 | { |
8e7fa2c8 | 6905 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, get_AT_low_pc (die), |
173bf5be | 6906 | "Address"); |
2e4b9b8c RH |
6907 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, get_AT_hi_pc (die), |
6908 | get_AT_low_pc (die), "Length"); | |
6909 | } | |
d291dd49 | 6910 | else |
a1d7ffe3 | 6911 | { |
e689ae67 JM |
6912 | /* A static variable; extract the symbol from DW_AT_location. |
6913 | Note that this code isn't currently hit, as we only emit | |
6914 | aranges for functions (jason 9/23/99). */ | |
e689ae67 JM |
6915 | dw_attr_ref a = get_AT (die, DW_AT_location); |
6916 | dw_loc_descr_ref loc; | |
2ad9852d | 6917 | |
a96c67ec | 6918 | if (! a || AT_class (a) != dw_val_class_loc) |
e689ae67 JM |
6919 | abort (); |
6920 | ||
a96c67ec | 6921 | loc = AT_loc (a); |
e689ae67 JM |
6922 | if (loc->dw_loc_opc != DW_OP_addr) |
6923 | abort (); | |
6924 | ||
2e4b9b8c RH |
6925 | dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, |
6926 | loc->dw_loc_oprnd1.v.val_addr, "Address"); | |
6927 | dw2_asm_output_data (DWARF2_ADDR_SIZE, | |
6928 | get_AT_unsigned (die, DW_AT_byte_size), | |
6929 | "Length"); | |
a1d7ffe3 | 6930 | } |
d291dd49 | 6931 | } |
71dfc51f | 6932 | |
a3f97cbb | 6933 | /* Output the terminator words. */ |
2e4b9b8c RH |
6934 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); |
6935 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); | |
a3f97cbb JW |
6936 | } |
6937 | ||
a20612aa RH |
6938 | /* Add a new entry to .debug_ranges. Return the offset at which it |
6939 | was placed. */ | |
6940 | ||
6941 | static unsigned int | |
7080f735 | 6942 | add_ranges (tree block) |
a20612aa RH |
6943 | { |
6944 | unsigned int in_use = ranges_table_in_use; | |
6945 | ||
6946 | if (in_use == ranges_table_allocated) | |
6947 | { | |
6948 | ranges_table_allocated += RANGES_TABLE_INCREMENT; | |
703ad42b KG |
6949 | ranges_table |
6950 | = ggc_realloc (ranges_table, (ranges_table_allocated | |
6951 | * sizeof (struct dw_ranges_struct))); | |
17211ab5 GK |
6952 | memset (ranges_table + ranges_table_in_use, 0, |
6953 | RANGES_TABLE_INCREMENT * sizeof (struct dw_ranges_struct)); | |
a20612aa RH |
6954 | } |
6955 | ||
6956 | ranges_table[in_use].block_num = (block ? BLOCK_NUMBER (block) : 0); | |
6957 | ranges_table_in_use = in_use + 1; | |
6958 | ||
6959 | return in_use * 2 * DWARF2_ADDR_SIZE; | |
6960 | } | |
6961 | ||
6962 | static void | |
7080f735 | 6963 | output_ranges (void) |
a20612aa | 6964 | { |
b3694847 | 6965 | unsigned i; |
83182544 | 6966 | static const char *const start_fmt = "Offset 0x%x"; |
a20612aa RH |
6967 | const char *fmt = start_fmt; |
6968 | ||
2ad9852d | 6969 | for (i = 0; i < ranges_table_in_use; i++) |
a20612aa RH |
6970 | { |
6971 | int block_num = ranges_table[i].block_num; | |
6972 | ||
6973 | if (block_num) | |
6974 | { | |
6975 | char blabel[MAX_ARTIFICIAL_LABEL_BYTES]; | |
6976 | char elabel[MAX_ARTIFICIAL_LABEL_BYTES]; | |
6977 | ||
6978 | ASM_GENERATE_INTERNAL_LABEL (blabel, BLOCK_BEGIN_LABEL, block_num); | |
6979 | ASM_GENERATE_INTERNAL_LABEL (elabel, BLOCK_END_LABEL, block_num); | |
6980 | ||
6981 | /* If all code is in the text section, then the compilation | |
6982 | unit base address defaults to DW_AT_low_pc, which is the | |
6983 | base of the text section. */ | |
6984 | if (separate_line_info_table_in_use == 0) | |
6985 | { | |
6986 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, blabel, | |
6987 | text_section_label, | |
6988 | fmt, i * 2 * DWARF2_ADDR_SIZE); | |
6989 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, elabel, | |
6990 | text_section_label, NULL); | |
6991 | } | |
2ad9852d | 6992 | |
a20612aa RH |
6993 | /* Otherwise, we add a DW_AT_entry_pc attribute to force the |
6994 | compilation unit base address to zero, which allows us to | |
6995 | use absolute addresses, and not worry about whether the | |
6996 | target supports cross-section arithmetic. */ | |
6997 | else | |
6998 | { | |
6999 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, blabel, | |
7000 | fmt, i * 2 * DWARF2_ADDR_SIZE); | |
7001 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, elabel, NULL); | |
7002 | } | |
7003 | ||
7004 | fmt = NULL; | |
7005 | } | |
7006 | else | |
7007 | { | |
7008 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); | |
7009 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); | |
7010 | fmt = start_fmt; | |
7011 | } | |
7012 | } | |
7013 | } | |
0b34cf1e UD |
7014 | |
7015 | /* Data structure containing information about input files. */ | |
7016 | struct file_info | |
7017 | { | |
7018 | char *path; /* Complete file name. */ | |
7019 | char *fname; /* File name part. */ | |
7020 | int length; /* Length of entire string. */ | |
7021 | int file_idx; /* Index in input file table. */ | |
7022 | int dir_idx; /* Index in directory table. */ | |
7023 | }; | |
7024 | ||
7025 | /* Data structure containing information about directories with source | |
7026 | files. */ | |
7027 | struct dir_info | |
7028 | { | |
7029 | char *path; /* Path including directory name. */ | |
7030 | int length; /* Path length. */ | |
7031 | int prefix; /* Index of directory entry which is a prefix. */ | |
0b34cf1e UD |
7032 | int count; /* Number of files in this directory. */ |
7033 | int dir_idx; /* Index of directory used as base. */ | |
7034 | int used; /* Used in the end? */ | |
7035 | }; | |
7036 | ||
7037 | /* Callback function for file_info comparison. We sort by looking at | |
7038 | the directories in the path. */ | |
356b0698 | 7039 | |
0b34cf1e | 7040 | static int |
7080f735 | 7041 | file_info_cmp (const void *p1, const void *p2) |
0b34cf1e UD |
7042 | { |
7043 | const struct file_info *s1 = p1; | |
7044 | const struct file_info *s2 = p2; | |
7045 | unsigned char *cp1; | |
7046 | unsigned char *cp2; | |
7047 | ||
356b0698 RK |
7048 | /* Take care of file names without directories. We need to make sure that |
7049 | we return consistent values to qsort since some will get confused if | |
7050 | we return the same value when identical operands are passed in opposite | |
7051 | orders. So if neither has a directory, return 0 and otherwise return | |
7052 | 1 or -1 depending on which one has the directory. */ | |
7053 | if ((s1->path == s1->fname || s2->path == s2->fname)) | |
7054 | return (s2->path == s2->fname) - (s1->path == s1->fname); | |
0b34cf1e UD |
7055 | |
7056 | cp1 = (unsigned char *) s1->path; | |
7057 | cp2 = (unsigned char *) s2->path; | |
7058 | ||
7059 | while (1) | |
7060 | { | |
7061 | ++cp1; | |
7062 | ++cp2; | |
356b0698 RK |
7063 | /* Reached the end of the first path? If so, handle like above. */ |
7064 | if ((cp1 == (unsigned char *) s1->fname) | |
7065 | || (cp2 == (unsigned char *) s2->fname)) | |
7066 | return ((cp2 == (unsigned char *) s2->fname) | |
7067 | - (cp1 == (unsigned char *) s1->fname)); | |
0b34cf1e UD |
7068 | |
7069 | /* Character of current path component the same? */ | |
356b0698 | 7070 | else if (*cp1 != *cp2) |
0b34cf1e UD |
7071 | return *cp1 - *cp2; |
7072 | } | |
7073 | } | |
7074 | ||
7075 | /* Output the directory table and the file name table. We try to minimize | |
7076 | the total amount of memory needed. A heuristic is used to avoid large | |
7077 | slowdowns with many input files. */ | |
2ad9852d | 7078 | |
0b34cf1e | 7079 | static void |
7080f735 | 7080 | output_file_names (void) |
0b34cf1e UD |
7081 | { |
7082 | struct file_info *files; | |
7083 | struct dir_info *dirs; | |
7084 | int *saved; | |
7085 | int *savehere; | |
7086 | int *backmap; | |
c4274b22 | 7087 | size_t ndirs; |
0b34cf1e | 7088 | int idx_offset; |
c4274b22 | 7089 | size_t i; |
0b34cf1e UD |
7090 | int idx; |
7091 | ||
f0b886ab UW |
7092 | /* Handle the case where file_table is empty. */ |
7093 | if (VARRAY_ACTIVE_SIZE (file_table) <= 1) | |
7094 | { | |
7095 | dw2_asm_output_data (1, 0, "End directory table"); | |
7096 | dw2_asm_output_data (1, 0, "End file name table"); | |
7097 | return; | |
7098 | } | |
7099 | ||
0b34cf1e | 7100 | /* Allocate the various arrays we need. */ |
703ad42b KG |
7101 | files = alloca (VARRAY_ACTIVE_SIZE (file_table) * sizeof (struct file_info)); |
7102 | dirs = alloca (VARRAY_ACTIVE_SIZE (file_table) * sizeof (struct dir_info)); | |
0b34cf1e UD |
7103 | |
7104 | /* Sort the file names. */ | |
c4274b22 | 7105 | for (i = 1; i < VARRAY_ACTIVE_SIZE (file_table); i++) |
0b34cf1e UD |
7106 | { |
7107 | char *f; | |
7108 | ||
7109 | /* Skip all leading "./". */ | |
c4274b22 | 7110 | f = VARRAY_CHAR_PTR (file_table, i); |
0b34cf1e UD |
7111 | while (f[0] == '.' && f[1] == '/') |
7112 | f += 2; | |
7113 | ||
7114 | /* Create a new array entry. */ | |
7115 | files[i].path = f; | |
7116 | files[i].length = strlen (f); | |
7117 | files[i].file_idx = i; | |
7118 | ||
7119 | /* Search for the file name part. */ | |
7120 | f = strrchr (f, '/'); | |
7121 | files[i].fname = f == NULL ? files[i].path : f + 1; | |
7122 | } | |
2ad9852d | 7123 | |
c4274b22 RH |
7124 | qsort (files + 1, VARRAY_ACTIVE_SIZE (file_table) - 1, |
7125 | sizeof (files[0]), file_info_cmp); | |
0b34cf1e UD |
7126 | |
7127 | /* Find all the different directories used. */ | |
7128 | dirs[0].path = files[1].path; | |
7129 | dirs[0].length = files[1].fname - files[1].path; | |
7130 | dirs[0].prefix = -1; | |
0b34cf1e UD |
7131 | dirs[0].count = 1; |
7132 | dirs[0].dir_idx = 0; | |
7133 | dirs[0].used = 0; | |
7134 | files[1].dir_idx = 0; | |
7135 | ndirs = 1; | |
7136 | ||
c4274b22 | 7137 | for (i = 2; i < VARRAY_ACTIVE_SIZE (file_table); i++) |
0b34cf1e UD |
7138 | if (files[i].fname - files[i].path == dirs[ndirs - 1].length |
7139 | && memcmp (dirs[ndirs - 1].path, files[i].path, | |
7140 | dirs[ndirs - 1].length) == 0) | |
7141 | { | |
7142 | /* Same directory as last entry. */ | |
7143 | files[i].dir_idx = ndirs - 1; | |
0b34cf1e UD |
7144 | ++dirs[ndirs - 1].count; |
7145 | } | |
7146 | else | |
7147 | { | |
c4274b22 | 7148 | size_t j; |
0b34cf1e UD |
7149 | |
7150 | /* This is a new directory. */ | |
7151 | dirs[ndirs].path = files[i].path; | |
7152 | dirs[ndirs].length = files[i].fname - files[i].path; | |
0b34cf1e UD |
7153 | dirs[ndirs].count = 1; |
7154 | dirs[ndirs].dir_idx = ndirs; | |
7155 | dirs[ndirs].used = 0; | |
7156 | files[i].dir_idx = ndirs; | |
7157 | ||
7158 | /* Search for a prefix. */ | |
981975b6 | 7159 | dirs[ndirs].prefix = -1; |
2ad9852d | 7160 | for (j = 0; j < ndirs; j++) |
981975b6 RH |
7161 | if (dirs[j].length < dirs[ndirs].length |
7162 | && dirs[j].length > 1 | |
7163 | && (dirs[ndirs].prefix == -1 | |
7164 | || dirs[j].length > dirs[dirs[ndirs].prefix].length) | |
7165 | && memcmp (dirs[j].path, dirs[ndirs].path, dirs[j].length) == 0) | |
7166 | dirs[ndirs].prefix = j; | |
0b34cf1e UD |
7167 | |
7168 | ++ndirs; | |
7169 | } | |
7170 | ||
2ad9852d RK |
7171 | /* Now to the actual work. We have to find a subset of the directories which |
7172 | allow expressing the file name using references to the directory table | |
7173 | with the least amount of characters. We do not do an exhaustive search | |
7174 | where we would have to check out every combination of every single | |
7175 | possible prefix. Instead we use a heuristic which provides nearly optimal | |
7176 | results in most cases and never is much off. */ | |
703ad42b KG |
7177 | saved = alloca (ndirs * sizeof (int)); |
7178 | savehere = alloca (ndirs * sizeof (int)); | |
0b34cf1e UD |
7179 | |
7180 | memset (saved, '\0', ndirs * sizeof (saved[0])); | |
2ad9852d | 7181 | for (i = 0; i < ndirs; i++) |
0b34cf1e | 7182 | { |
c4274b22 | 7183 | size_t j; |
0b34cf1e UD |
7184 | int total; |
7185 | ||
2ad9852d RK |
7186 | /* We can always save some space for the current directory. But this |
7187 | does not mean it will be enough to justify adding the directory. */ | |
0b34cf1e UD |
7188 | savehere[i] = dirs[i].length; |
7189 | total = (savehere[i] - saved[i]) * dirs[i].count; | |
7190 | ||
2ad9852d | 7191 | for (j = i + 1; j < ndirs; j++) |
0b34cf1e UD |
7192 | { |
7193 | savehere[j] = 0; | |
0b34cf1e UD |
7194 | if (saved[j] < dirs[i].length) |
7195 | { | |
7196 | /* Determine whether the dirs[i] path is a prefix of the | |
7197 | dirs[j] path. */ | |
7198 | int k; | |
7199 | ||
981975b6 | 7200 | k = dirs[j].prefix; |
c4274b22 | 7201 | while (k != -1 && k != (int) i) |
981975b6 RH |
7202 | k = dirs[k].prefix; |
7203 | ||
c4274b22 | 7204 | if (k == (int) i) |
981975b6 RH |
7205 | { |
7206 | /* Yes it is. We can possibly safe some memory but | |
7207 | writing the filenames in dirs[j] relative to | |
7208 | dirs[i]. */ | |
7209 | savehere[j] = dirs[i].length; | |
7210 | total += (savehere[j] - saved[j]) * dirs[j].count; | |
7211 | } | |
0b34cf1e UD |
7212 | } |
7213 | } | |
7214 | ||
7215 | /* Check whether we can safe enough to justify adding the dirs[i] | |
7216 | directory. */ | |
7217 | if (total > dirs[i].length + 1) | |
7218 | { | |
981975b6 | 7219 | /* It's worthwhile adding. */ |
c26fbbca | 7220 | for (j = i; j < ndirs; j++) |
0b34cf1e UD |
7221 | if (savehere[j] > 0) |
7222 | { | |
7223 | /* Remember how much we saved for this directory so far. */ | |
7224 | saved[j] = savehere[j]; | |
7225 | ||
7226 | /* Remember the prefix directory. */ | |
7227 | dirs[j].dir_idx = i; | |
7228 | } | |
7229 | } | |
7230 | } | |
7231 | ||
2ad9852d RK |
7232 | /* We have to emit them in the order they appear in the file_table array |
7233 | since the index is used in the debug info generation. To do this | |
7234 | efficiently we generate a back-mapping of the indices first. */ | |
703ad42b | 7235 | backmap = alloca (VARRAY_ACTIVE_SIZE (file_table) * sizeof (int)); |
c4274b22 | 7236 | for (i = 1; i < VARRAY_ACTIVE_SIZE (file_table); i++) |
0b34cf1e UD |
7237 | { |
7238 | backmap[files[i].file_idx] = i; | |
2ad9852d | 7239 | |
0b34cf1e UD |
7240 | /* Mark this directory as used. */ |
7241 | dirs[dirs[files[i].dir_idx].dir_idx].used = 1; | |
7242 | } | |
7243 | ||
2ad9852d RK |
7244 | /* That was it. We are ready to emit the information. First emit the |
7245 | directory name table. We have to make sure the first actually emitted | |
7246 | directory name has index one; zero is reserved for the current working | |
7247 | directory. Make sure we do not confuse these indices with the one for the | |
7248 | constructed table (even though most of the time they are identical). */ | |
0b34cf1e | 7249 | idx = 1; |
e57cabac | 7250 | idx_offset = dirs[0].length > 0 ? 1 : 0; |
2ad9852d | 7251 | for (i = 1 - idx_offset; i < ndirs; i++) |
0b34cf1e UD |
7252 | if (dirs[i].used != 0) |
7253 | { | |
7254 | dirs[i].used = idx++; | |
2e4b9b8c RH |
7255 | dw2_asm_output_nstring (dirs[i].path, dirs[i].length - 1, |
7256 | "Directory Entry: 0x%x", dirs[i].used); | |
0b34cf1e | 7257 | } |
2ad9852d | 7258 | |
2e4b9b8c RH |
7259 | dw2_asm_output_data (1, 0, "End directory table"); |
7260 | ||
0b34cf1e UD |
7261 | /* Correct the index for the current working directory entry if it |
7262 | exists. */ | |
7263 | if (idx_offset == 0) | |
7264 | dirs[0].used = 0; | |
0b34cf1e UD |
7265 | |
7266 | /* Now write all the file names. */ | |
c4274b22 | 7267 | for (i = 1; i < VARRAY_ACTIVE_SIZE (file_table); i++) |
0b34cf1e UD |
7268 | { |
7269 | int file_idx = backmap[i]; | |
7270 | int dir_idx = dirs[files[file_idx].dir_idx].dir_idx; | |
7271 | ||
2e4b9b8c | 7272 | dw2_asm_output_nstring (files[file_idx].path + dirs[dir_idx].length, -1, |
94e001a9 | 7273 | "File Entry: 0x%lx", (unsigned long) i); |
0b34cf1e UD |
7274 | |
7275 | /* Include directory index. */ | |
2e4b9b8c | 7276 | dw2_asm_output_data_uleb128 (dirs[dir_idx].used, NULL); |
0b34cf1e UD |
7277 | |
7278 | /* Modification time. */ | |
2e4b9b8c | 7279 | dw2_asm_output_data_uleb128 (0, NULL); |
0b34cf1e UD |
7280 | |
7281 | /* File length in bytes. */ | |
2e4b9b8c | 7282 | dw2_asm_output_data_uleb128 (0, NULL); |
0b34cf1e | 7283 | } |
2ad9852d | 7284 | |
2e4b9b8c | 7285 | dw2_asm_output_data (1, 0, "End file name table"); |
0b34cf1e UD |
7286 | } |
7287 | ||
7288 | ||
a3f97cbb | 7289 | /* Output the source line number correspondence information. This |
14a774a9 | 7290 | information goes into the .debug_line section. */ |
71dfc51f | 7291 | |
a3f97cbb | 7292 | static void |
7080f735 | 7293 | output_line_info (void) |
a3f97cbb | 7294 | { |
981975b6 | 7295 | char l1[20], l2[20], p1[20], p2[20]; |
a3f97cbb JW |
7296 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
7297 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
b3694847 SS |
7298 | unsigned opc; |
7299 | unsigned n_op_args; | |
7300 | unsigned long lt_index; | |
7301 | unsigned long current_line; | |
7302 | long line_offset; | |
7303 | long line_delta; | |
7304 | unsigned long current_file; | |
7305 | unsigned long function; | |
71dfc51f | 7306 | |
2e4b9b8c RH |
7307 | ASM_GENERATE_INTERNAL_LABEL (l1, LINE_NUMBER_BEGIN_LABEL, 0); |
7308 | ASM_GENERATE_INTERNAL_LABEL (l2, LINE_NUMBER_END_LABEL, 0); | |
981975b6 RH |
7309 | ASM_GENERATE_INTERNAL_LABEL (p1, LN_PROLOG_AS_LABEL, 0); |
7310 | ASM_GENERATE_INTERNAL_LABEL (p2, LN_PROLOG_END_LABEL, 0); | |
71dfc51f | 7311 | |
9eb0ef7a KB |
7312 | if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) |
7313 | dw2_asm_output_data (4, 0xffffffff, | |
7314 | "Initial length escape value indicating 64-bit DWARF extension"); | |
2e4b9b8c RH |
7315 | dw2_asm_output_delta (DWARF_OFFSET_SIZE, l2, l1, |
7316 | "Length of Source Line Info"); | |
7317 | ASM_OUTPUT_LABEL (asm_out_file, l1); | |
71dfc51f | 7318 | |
2e4b9b8c | 7319 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); |
981975b6 RH |
7320 | dw2_asm_output_delta (DWARF_OFFSET_SIZE, p2, p1, "Prolog Length"); |
7321 | ASM_OUTPUT_LABEL (asm_out_file, p1); | |
71dfc51f | 7322 | |
c1a046e5 TT |
7323 | /* Define the architecture-dependent minimum instruction length (in |
7324 | bytes). In this implementation of DWARF, this field is used for | |
7325 | information purposes only. Since GCC generates assembly language, | |
7326 | we have no a priori knowledge of how many instruction bytes are | |
7327 | generated for each source line, and therefore can use only the | |
7328 | DW_LNE_set_address and DW_LNS_fixed_advance_pc line information | |
7329 | commands. Accordingly, we fix this as `1', which is "correct | |
7330 | enough" for all architectures, and don't let the target override. */ | |
7331 | dw2_asm_output_data (1, 1, | |
2e4b9b8c | 7332 | "Minimum Instruction Length"); |
c1a046e5 | 7333 | |
2e4b9b8c RH |
7334 | dw2_asm_output_data (1, DWARF_LINE_DEFAULT_IS_STMT_START, |
7335 | "Default is_stmt_start flag"); | |
2e4b9b8c RH |
7336 | dw2_asm_output_data (1, DWARF_LINE_BASE, |
7337 | "Line Base Value (Special Opcodes)"); | |
2e4b9b8c RH |
7338 | dw2_asm_output_data (1, DWARF_LINE_RANGE, |
7339 | "Line Range Value (Special Opcodes)"); | |
2e4b9b8c RH |
7340 | dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE, |
7341 | "Special Opcode Base"); | |
71dfc51f | 7342 | |
2ad9852d | 7343 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; opc++) |
a3f97cbb JW |
7344 | { |
7345 | switch (opc) | |
7346 | { | |
7347 | case DW_LNS_advance_pc: | |
7348 | case DW_LNS_advance_line: | |
7349 | case DW_LNS_set_file: | |
7350 | case DW_LNS_set_column: | |
7351 | case DW_LNS_fixed_advance_pc: | |
7352 | n_op_args = 1; | |
7353 | break; | |
7354 | default: | |
7355 | n_op_args = 0; | |
7356 | break; | |
7357 | } | |
2e4b9b8c RH |
7358 | |
7359 | dw2_asm_output_data (1, n_op_args, "opcode: 0x%x has %d args", | |
7360 | opc, n_op_args); | |
a3f97cbb | 7361 | } |
71dfc51f | 7362 | |
0b34cf1e UD |
7363 | /* Write out the information about the files we use. */ |
7364 | output_file_names (); | |
981975b6 | 7365 | ASM_OUTPUT_LABEL (asm_out_file, p2); |
a3f97cbb | 7366 | |
2f22d404 JM |
7367 | /* We used to set the address register to the first location in the text |
7368 | section here, but that didn't accomplish anything since we already | |
7369 | have a line note for the opening brace of the first function. */ | |
a3f97cbb JW |
7370 | |
7371 | /* Generate the line number to PC correspondence table, encoded as | |
7372 | a series of state machine operations. */ | |
7373 | current_file = 1; | |
7374 | current_line = 1; | |
8b790721 | 7375 | strcpy (prev_line_label, text_section_label); |
a3f97cbb JW |
7376 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
7377 | { | |
b3694847 | 7378 | dw_line_info_ref line_info = &line_info_table[lt_index]; |
2f22d404 | 7379 | |
10a11b75 JM |
7380 | #if 0 |
7381 | /* Disable this optimization for now; GDB wants to see two line notes | |
7382 | at the beginning of a function so it can find the end of the | |
7383 | prologue. */ | |
7384 | ||
2f22d404 | 7385 | /* Don't emit anything for redundant notes. Just updating the |
73c68f61 SS |
7386 | address doesn't accomplish anything, because we already assume |
7387 | that anything after the last address is this line. */ | |
2f22d404 JM |
7388 | if (line_info->dw_line_num == current_line |
7389 | && line_info->dw_file_num == current_file) | |
7390 | continue; | |
10a11b75 | 7391 | #endif |
71dfc51f | 7392 | |
2e4b9b8c RH |
7393 | /* Emit debug info for the address of the current line. |
7394 | ||
7395 | Unfortunately, we have little choice here currently, and must always | |
2ad9852d | 7396 | use the most general form. GCC does not know the address delta |
2e4b9b8c RH |
7397 | itself, so we can't use DW_LNS_advance_pc. Many ports do have length |
7398 | attributes which will give an upper bound on the address range. We | |
7399 | could perhaps use length attributes to determine when it is safe to | |
7400 | use DW_LNS_fixed_advance_pc. */ | |
7401 | ||
5c90448c | 7402 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
7403 | if (0) |
7404 | { | |
7405 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
2e4b9b8c RH |
7406 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7407 | "DW_LNS_fixed_advance_pc"); | |
7408 | dw2_asm_output_delta (2, line_label, prev_line_label, NULL); | |
f19a6894 JW |
7409 | } |
7410 | else | |
7411 | { | |
a1a4189d | 7412 | /* This can handle any delta. This takes |
73c68f61 | 7413 | 4+DWARF2_ADDR_SIZE bytes. */ |
2e4b9b8c RH |
7414 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7415 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7416 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7417 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
f19a6894 | 7418 | } |
2ad9852d | 7419 | |
f19a6894 JW |
7420 | strcpy (prev_line_label, line_label); |
7421 | ||
7422 | /* Emit debug info for the source file of the current line, if | |
7423 | different from the previous line. */ | |
a3f97cbb JW |
7424 | if (line_info->dw_file_num != current_file) |
7425 | { | |
7426 | current_file = line_info->dw_file_num; | |
2e4b9b8c RH |
7427 | dw2_asm_output_data (1, DW_LNS_set_file, "DW_LNS_set_file"); |
7428 | dw2_asm_output_data_uleb128 (current_file, "(\"%s\")", | |
c4274b22 RH |
7429 | VARRAY_CHAR_PTR (file_table, |
7430 | current_file)); | |
a3f97cbb | 7431 | } |
71dfc51f | 7432 | |
f19a6894 JW |
7433 | /* Emit debug info for the current line number, choosing the encoding |
7434 | that uses the least amount of space. */ | |
2f22d404 | 7435 | if (line_info->dw_line_num != current_line) |
a3f97cbb | 7436 | { |
2f22d404 JM |
7437 | line_offset = line_info->dw_line_num - current_line; |
7438 | line_delta = line_offset - DWARF_LINE_BASE; | |
7439 | current_line = line_info->dw_line_num; | |
7440 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
2ad9852d RK |
7441 | /* This can handle deltas from -10 to 234, using the current |
7442 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
7443 | takes 1 byte. */ | |
7444 | dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE + line_delta, | |
7445 | "line %lu", current_line); | |
2f22d404 JM |
7446 | else |
7447 | { | |
7448 | /* This can handle any delta. This takes at least 4 bytes, | |
7449 | depending on the value being encoded. */ | |
2e4b9b8c RH |
7450 | dw2_asm_output_data (1, DW_LNS_advance_line, |
7451 | "advance to line %lu", current_line); | |
7452 | dw2_asm_output_data_sleb128 (line_offset, NULL); | |
7453 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); | |
2f22d404 | 7454 | } |
a94dbf2c JM |
7455 | } |
7456 | else | |
2ad9852d RK |
7457 | /* We still need to start a new row, so output a copy insn. */ |
7458 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); | |
a3f97cbb JW |
7459 | } |
7460 | ||
f19a6894 JW |
7461 | /* Emit debug info for the address of the end of the function. */ |
7462 | if (0) | |
7463 | { | |
2e4b9b8c RH |
7464 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7465 | "DW_LNS_fixed_advance_pc"); | |
7466 | dw2_asm_output_delta (2, text_end_label, prev_line_label, NULL); | |
f19a6894 JW |
7467 | } |
7468 | else | |
7469 | { | |
2e4b9b8c RH |
7470 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7471 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7472 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7473 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, text_end_label, NULL); |
f19a6894 | 7474 | } |
bdb669cb | 7475 | |
2e4b9b8c RH |
7476 | dw2_asm_output_data (1, 0, "DW_LNE_end_sequence"); |
7477 | dw2_asm_output_data_uleb128 (1, NULL); | |
7478 | dw2_asm_output_data (1, DW_LNE_end_sequence, NULL); | |
e90b62db JM |
7479 | |
7480 | function = 0; | |
7481 | current_file = 1; | |
7482 | current_line = 1; | |
556273e0 | 7483 | for (lt_index = 0; lt_index < separate_line_info_table_in_use;) |
e90b62db | 7484 | { |
b3694847 | 7485 | dw_separate_line_info_ref line_info |
e90b62db | 7486 | = &separate_line_info_table[lt_index]; |
71dfc51f | 7487 | |
10a11b75 | 7488 | #if 0 |
2f22d404 JM |
7489 | /* Don't emit anything for redundant notes. */ |
7490 | if (line_info->dw_line_num == current_line | |
7491 | && line_info->dw_file_num == current_file | |
7492 | && line_info->function == function) | |
7493 | goto cont; | |
10a11b75 | 7494 | #endif |
2f22d404 | 7495 | |
f19a6894 JW |
7496 | /* Emit debug info for the address of the current line. If this is |
7497 | a new function, or the first line of a function, then we need | |
7498 | to handle it differently. */ | |
5c90448c JM |
7499 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
7500 | lt_index); | |
e90b62db JM |
7501 | if (function != line_info->function) |
7502 | { | |
7503 | function = line_info->function; | |
71dfc51f | 7504 | |
f9da5064 | 7505 | /* Set the address register to the first line in the function. */ |
2e4b9b8c RH |
7506 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7507 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7508 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7509 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
e90b62db JM |
7510 | } |
7511 | else | |
7512 | { | |
f19a6894 JW |
7513 | /* ??? See the DW_LNS_advance_pc comment above. */ |
7514 | if (0) | |
7515 | { | |
2e4b9b8c RH |
7516 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7517 | "DW_LNS_fixed_advance_pc"); | |
7518 | dw2_asm_output_delta (2, line_label, prev_line_label, NULL); | |
f19a6894 JW |
7519 | } |
7520 | else | |
7521 | { | |
2e4b9b8c RH |
7522 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7523 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7524 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7525 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
f19a6894 | 7526 | } |
e90b62db | 7527 | } |
2ad9852d | 7528 | |
f19a6894 | 7529 | strcpy (prev_line_label, line_label); |
71dfc51f | 7530 | |
f19a6894 JW |
7531 | /* Emit debug info for the source file of the current line, if |
7532 | different from the previous line. */ | |
e90b62db JM |
7533 | if (line_info->dw_file_num != current_file) |
7534 | { | |
7535 | current_file = line_info->dw_file_num; | |
2e4b9b8c RH |
7536 | dw2_asm_output_data (1, DW_LNS_set_file, "DW_LNS_set_file"); |
7537 | dw2_asm_output_data_uleb128 (current_file, "(\"%s\")", | |
c4274b22 RH |
7538 | VARRAY_CHAR_PTR (file_table, |
7539 | current_file)); | |
e90b62db | 7540 | } |
71dfc51f | 7541 | |
f19a6894 JW |
7542 | /* Emit debug info for the current line number, choosing the encoding |
7543 | that uses the least amount of space. */ | |
e90b62db JM |
7544 | if (line_info->dw_line_num != current_line) |
7545 | { | |
7546 | line_offset = line_info->dw_line_num - current_line; | |
7547 | line_delta = line_offset - DWARF_LINE_BASE; | |
7548 | current_line = line_info->dw_line_num; | |
7549 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
2e4b9b8c RH |
7550 | dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE + line_delta, |
7551 | "line %lu", current_line); | |
e90b62db JM |
7552 | else |
7553 | { | |
2e4b9b8c RH |
7554 | dw2_asm_output_data (1, DW_LNS_advance_line, |
7555 | "advance to line %lu", current_line); | |
7556 | dw2_asm_output_data_sleb128 (line_offset, NULL); | |
7557 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); | |
e90b62db JM |
7558 | } |
7559 | } | |
2f22d404 | 7560 | else |
2e4b9b8c | 7561 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); |
71dfc51f | 7562 | |
10a11b75 | 7563 | #if 0 |
2f22d404 | 7564 | cont: |
10a11b75 | 7565 | #endif |
2ad9852d RK |
7566 | |
7567 | lt_index++; | |
e90b62db JM |
7568 | |
7569 | /* If we're done with a function, end its sequence. */ | |
7570 | if (lt_index == separate_line_info_table_in_use | |
7571 | || separate_line_info_table[lt_index].function != function) | |
7572 | { | |
7573 | current_file = 1; | |
7574 | current_line = 1; | |
71dfc51f | 7575 | |
f19a6894 | 7576 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 7577 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
7578 | if (0) |
7579 | { | |
2e4b9b8c RH |
7580 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7581 | "DW_LNS_fixed_advance_pc"); | |
7582 | dw2_asm_output_delta (2, line_label, prev_line_label, NULL); | |
f19a6894 JW |
7583 | } |
7584 | else | |
7585 | { | |
2e4b9b8c RH |
7586 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7587 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7588 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7589 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
f19a6894 | 7590 | } |
e90b62db JM |
7591 | |
7592 | /* Output the marker for the end of this sequence. */ | |
2e4b9b8c RH |
7593 | dw2_asm_output_data (1, 0, "DW_LNE_end_sequence"); |
7594 | dw2_asm_output_data_uleb128 (1, NULL); | |
7595 | dw2_asm_output_data (1, DW_LNE_end_sequence, NULL); | |
e90b62db JM |
7596 | } |
7597 | } | |
f19f17e0 JM |
7598 | |
7599 | /* Output the marker for the end of the line number info. */ | |
2e4b9b8c | 7600 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
a3f97cbb JW |
7601 | } |
7602 | \f | |
a3f97cbb JW |
7603 | /* Given a pointer to a tree node for some base type, return a pointer to |
7604 | a DIE that describes the given type. | |
7605 | ||
7606 | This routine must only be called for GCC type nodes that correspond to | |
7607 | Dwarf base (fundamental) types. */ | |
71dfc51f | 7608 | |
a3f97cbb | 7609 | static dw_die_ref |
7080f735 | 7610 | base_type_die (tree type) |
a3f97cbb | 7611 | { |
b3694847 SS |
7612 | dw_die_ref base_type_result; |
7613 | const char *type_name; | |
7614 | enum dwarf_type encoding; | |
7615 | tree name = TYPE_NAME (type); | |
a3f97cbb | 7616 | |
2ad9852d | 7617 | if (TREE_CODE (type) == ERROR_MARK || TREE_CODE (type) == VOID_TYPE) |
a3f97cbb JW |
7618 | return 0; |
7619 | ||
405f63da MM |
7620 | if (name) |
7621 | { | |
7622 | if (TREE_CODE (name) == TYPE_DECL) | |
7623 | name = DECL_NAME (name); | |
7624 | ||
7625 | type_name = IDENTIFIER_POINTER (name); | |
7626 | } | |
7627 | else | |
7628 | type_name = "__unknown__"; | |
a9d38797 | 7629 | |
a3f97cbb JW |
7630 | switch (TREE_CODE (type)) |
7631 | { | |
a3f97cbb | 7632 | case INTEGER_TYPE: |
a9d38797 | 7633 | /* Carefully distinguish the C character types, without messing |
73c68f61 SS |
7634 | up if the language is not C. Note that we check only for the names |
7635 | that contain spaces; other names might occur by coincidence in other | |
7636 | languages. */ | |
a9d38797 JM |
7637 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
7638 | && (type == char_type_node | |
7639 | || ! strcmp (type_name, "signed char") | |
7640 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 7641 | { |
a9d38797 JM |
7642 | if (TREE_UNSIGNED (type)) |
7643 | encoding = DW_ATE_unsigned; | |
7644 | else | |
7645 | encoding = DW_ATE_signed; | |
7646 | break; | |
a3f97cbb | 7647 | } |
556273e0 | 7648 | /* else fall through. */ |
a3f97cbb | 7649 | |
a9d38797 JM |
7650 | case CHAR_TYPE: |
7651 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
7652 | if (TREE_UNSIGNED (type)) | |
7653 | encoding = DW_ATE_unsigned_char; | |
7654 | else | |
7655 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
7656 | break; |
7657 | ||
7658 | case REAL_TYPE: | |
a9d38797 | 7659 | encoding = DW_ATE_float; |
a3f97cbb JW |
7660 | break; |
7661 | ||
405f63da MM |
7662 | /* Dwarf2 doesn't know anything about complex ints, so use |
7663 | a user defined type for it. */ | |
a3f97cbb | 7664 | case COMPLEX_TYPE: |
405f63da MM |
7665 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
7666 | encoding = DW_ATE_complex_float; | |
7667 | else | |
7668 | encoding = DW_ATE_lo_user; | |
a3f97cbb JW |
7669 | break; |
7670 | ||
7671 | case BOOLEAN_TYPE: | |
a9d38797 JM |
7672 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
7673 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
7674 | break; |
7675 | ||
7676 | default: | |
2ad9852d RK |
7677 | /* No other TREE_CODEs are Dwarf fundamental types. */ |
7678 | abort (); | |
a3f97cbb JW |
7679 | } |
7680 | ||
54ba1f0d | 7681 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die, type); |
14a774a9 RK |
7682 | if (demangle_name_func) |
7683 | type_name = (*demangle_name_func) (type_name); | |
7684 | ||
a9d38797 JM |
7685 | add_AT_string (base_type_result, DW_AT_name, type_name); |
7686 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 7687 | int_size_in_bytes (type)); |
a9d38797 | 7688 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
7689 | |
7690 | return base_type_result; | |
7691 | } | |
7692 | ||
7693 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
7694 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
7695 | a given type is generally the same as the given type, except that if the | |
7696 | given type is a pointer or reference type, then the root type of the given | |
7697 | type is the root type of the "basis" type for the pointer or reference | |
7698 | type. (This definition of the "root" type is recursive.) Also, the root | |
7699 | type of a `const' qualified type or a `volatile' qualified type is the | |
7700 | root type of the given type without the qualifiers. */ | |
71dfc51f | 7701 | |
a3f97cbb | 7702 | static tree |
7080f735 | 7703 | root_type (tree type) |
a3f97cbb JW |
7704 | { |
7705 | if (TREE_CODE (type) == ERROR_MARK) | |
7706 | return error_mark_node; | |
7707 | ||
7708 | switch (TREE_CODE (type)) | |
7709 | { | |
7710 | case ERROR_MARK: | |
7711 | return error_mark_node; | |
7712 | ||
7713 | case POINTER_TYPE: | |
7714 | case REFERENCE_TYPE: | |
7715 | return type_main_variant (root_type (TREE_TYPE (type))); | |
7716 | ||
7717 | default: | |
7718 | return type_main_variant (type); | |
7719 | } | |
7720 | } | |
7721 | ||
cc2902df | 7722 | /* Given a pointer to an arbitrary ..._TYPE tree node, return nonzero if the |
a3f97cbb | 7723 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ |
71dfc51f RK |
7724 | |
7725 | static inline int | |
7080f735 | 7726 | is_base_type (tree type) |
a3f97cbb JW |
7727 | { |
7728 | switch (TREE_CODE (type)) | |
7729 | { | |
7730 | case ERROR_MARK: | |
7731 | case VOID_TYPE: | |
7732 | case INTEGER_TYPE: | |
7733 | case REAL_TYPE: | |
7734 | case COMPLEX_TYPE: | |
7735 | case BOOLEAN_TYPE: | |
7736 | case CHAR_TYPE: | |
7737 | return 1; | |
7738 | ||
7739 | case SET_TYPE: | |
7740 | case ARRAY_TYPE: | |
7741 | case RECORD_TYPE: | |
7742 | case UNION_TYPE: | |
7743 | case QUAL_UNION_TYPE: | |
7744 | case ENUMERAL_TYPE: | |
7745 | case FUNCTION_TYPE: | |
7746 | case METHOD_TYPE: | |
7747 | case POINTER_TYPE: | |
7748 | case REFERENCE_TYPE: | |
7749 | case FILE_TYPE: | |
7750 | case OFFSET_TYPE: | |
7751 | case LANG_TYPE: | |
604bb87d | 7752 | case VECTOR_TYPE: |
a3f97cbb JW |
7753 | return 0; |
7754 | ||
7755 | default: | |
7756 | abort (); | |
7757 | } | |
71dfc51f | 7758 | |
a3f97cbb JW |
7759 | return 0; |
7760 | } | |
7761 | ||
4977bab6 ZW |
7762 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE |
7763 | node, return the size in bits for the type if it is a constant, or else | |
7764 | return the alignment for the type if the type's size is not constant, or | |
7765 | else return BITS_PER_WORD if the type actually turns out to be an | |
7766 | ERROR_MARK node. */ | |
7767 | ||
7768 | static inline unsigned HOST_WIDE_INT | |
7080f735 | 7769 | simple_type_size_in_bits (tree type) |
4977bab6 | 7770 | { |
4977bab6 ZW |
7771 | if (TREE_CODE (type) == ERROR_MARK) |
7772 | return BITS_PER_WORD; | |
7773 | else if (TYPE_SIZE (type) == NULL_TREE) | |
7774 | return 0; | |
7775 | else if (host_integerp (TYPE_SIZE (type), 1)) | |
7776 | return tree_low_cst (TYPE_SIZE (type), 1); | |
7777 | else | |
7778 | return TYPE_ALIGN (type); | |
7779 | } | |
7780 | ||
c3cdeef4 JB |
7781 | /* Return true if the debug information for the given type should be |
7782 | emitted as a subrange type. */ | |
7783 | ||
7784 | static inline bool | |
7080f735 | 7785 | is_ada_subrange_type (tree type) |
c3cdeef4 JB |
7786 | { |
7787 | /* We do this for INTEGER_TYPEs that have names, parent types, and when | |
7788 | we are compiling Ada code. */ | |
7789 | return (TREE_CODE (type) == INTEGER_TYPE | |
7790 | && TYPE_NAME (type) != 0 && TREE_TYPE (type) != 0 | |
7791 | && TREE_CODE (TREE_TYPE (type)) == INTEGER_TYPE | |
7792 | && TREE_UNSIGNED (TREE_TYPE (type)) && is_ada ()); | |
7793 | } | |
7794 | ||
7795 | /* Given a pointer to a tree node for a subrange type, return a pointer | |
7796 | to a DIE that describes the given type. */ | |
7797 | ||
7798 | static dw_die_ref | |
7080f735 | 7799 | subrange_type_die (tree type) |
c3cdeef4 JB |
7800 | { |
7801 | dw_die_ref subtype_die; | |
7802 | dw_die_ref subrange_die; | |
7803 | tree name = TYPE_NAME (type); | |
7080f735 | 7804 | |
c3cdeef4 JB |
7805 | subtype_die = base_type_die (TREE_TYPE (type)); |
7806 | ||
7807 | if (TREE_CODE (name) == TYPE_DECL) | |
7808 | name = DECL_NAME (name); | |
7809 | ||
7810 | subrange_die = new_die (DW_TAG_subrange_type, comp_unit_die, type); | |
7811 | add_name_attribute (subrange_die, IDENTIFIER_POINTER (name)); | |
7812 | if (TYPE_MIN_VALUE (type) != NULL) | |
7813 | add_bound_info (subrange_die, DW_AT_lower_bound, | |
7814 | TYPE_MIN_VALUE (type)); | |
7815 | if (TYPE_MAX_VALUE (type) != NULL) | |
7816 | add_bound_info (subrange_die, DW_AT_upper_bound, | |
7817 | TYPE_MAX_VALUE (type)); | |
7818 | add_AT_die_ref (subrange_die, DW_AT_type, subtype_die); | |
7819 | ||
7820 | return subrange_die; | |
7821 | } | |
7822 | ||
a3f97cbb JW |
7823 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging |
7824 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 7825 | |
a3f97cbb | 7826 | static dw_die_ref |
7080f735 AJ |
7827 | modified_type_die (tree type, int is_const_type, int is_volatile_type, |
7828 | dw_die_ref context_die) | |
a3f97cbb | 7829 | { |
b3694847 SS |
7830 | enum tree_code code = TREE_CODE (type); |
7831 | dw_die_ref mod_type_die = NULL; | |
7832 | dw_die_ref sub_die = NULL; | |
7833 | tree item_type = NULL; | |
a3f97cbb JW |
7834 | |
7835 | if (code != ERROR_MARK) | |
7836 | { | |
5101b304 MM |
7837 | tree qualified_type; |
7838 | ||
7839 | /* See if we already have the appropriately qualified variant of | |
7840 | this type. */ | |
c26fbbca | 7841 | qualified_type |
5101b304 MM |
7842 | = get_qualified_type (type, |
7843 | ((is_const_type ? TYPE_QUAL_CONST : 0) | |
c26fbbca | 7844 | | (is_volatile_type |
5101b304 | 7845 | ? TYPE_QUAL_VOLATILE : 0))); |
2ad9852d | 7846 | |
5101b304 MM |
7847 | /* If we do, then we can just use its DIE, if it exists. */ |
7848 | if (qualified_type) | |
7849 | { | |
7850 | mod_type_die = lookup_type_die (qualified_type); | |
7851 | if (mod_type_die) | |
7852 | return mod_type_die; | |
7853 | } | |
bdb669cb | 7854 | |
556273e0 | 7855 | /* Handle C typedef types. */ |
c26fbbca | 7856 | if (qualified_type && TYPE_NAME (qualified_type) |
5101b304 MM |
7857 | && TREE_CODE (TYPE_NAME (qualified_type)) == TYPE_DECL |
7858 | && DECL_ORIGINAL_TYPE (TYPE_NAME (qualified_type))) | |
a94dbf2c | 7859 | { |
5101b304 MM |
7860 | tree type_name = TYPE_NAME (qualified_type); |
7861 | tree dtype = TREE_TYPE (type_name); | |
2ad9852d | 7862 | |
5101b304 | 7863 | if (qualified_type == dtype) |
a94dbf2c JM |
7864 | { |
7865 | /* For a named type, use the typedef. */ | |
5101b304 MM |
7866 | gen_type_die (qualified_type, context_die); |
7867 | mod_type_die = lookup_type_die (qualified_type); | |
a94dbf2c JM |
7868 | } |
7869 | else if (is_const_type < TYPE_READONLY (dtype) | |
7870 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
7871 | /* cv-unqualified version of named type. Just use the unnamed | |
7872 | type to which it refers. */ | |
71dfc51f | 7873 | mod_type_die |
5101b304 | 7874 | = modified_type_die (DECL_ORIGINAL_TYPE (type_name), |
71dfc51f RK |
7875 | is_const_type, is_volatile_type, |
7876 | context_die); | |
2ad9852d | 7877 | |
71dfc51f | 7878 | /* Else cv-qualified version of named type; fall through. */ |
a94dbf2c JM |
7879 | } |
7880 | ||
7881 | if (mod_type_die) | |
556273e0 KH |
7882 | /* OK. */ |
7883 | ; | |
a94dbf2c | 7884 | else if (is_const_type) |
a3f97cbb | 7885 | { |
54ba1f0d | 7886 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die, type); |
a9d38797 | 7887 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
7888 | } |
7889 | else if (is_volatile_type) | |
7890 | { | |
54ba1f0d | 7891 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die, type); |
a9d38797 | 7892 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
7893 | } |
7894 | else if (code == POINTER_TYPE) | |
7895 | { | |
54ba1f0d | 7896 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die, type); |
4977bab6 ZW |
7897 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, |
7898 | simple_type_size_in_bits (type) / BITS_PER_UNIT); | |
61b32c02 | 7899 | #if 0 |
a3f97cbb | 7900 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 7901 | #endif |
a3f97cbb | 7902 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
7903 | } |
7904 | else if (code == REFERENCE_TYPE) | |
7905 | { | |
54ba1f0d | 7906 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die, type); |
4977bab6 ZW |
7907 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, |
7908 | simple_type_size_in_bits (type) / BITS_PER_UNIT); | |
61b32c02 | 7909 | #if 0 |
a3f97cbb | 7910 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
556273e0 | 7911 | #endif |
a3f97cbb | 7912 | item_type = TREE_TYPE (type); |
a3f97cbb | 7913 | } |
c3cdeef4 JB |
7914 | else if (is_ada_subrange_type (type)) |
7915 | mod_type_die = subrange_type_die (type); | |
a3f97cbb | 7916 | else if (is_base_type (type)) |
71dfc51f | 7917 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
7918 | else |
7919 | { | |
4b674448 JM |
7920 | gen_type_die (type, context_die); |
7921 | ||
a3f97cbb JW |
7922 | /* We have to get the type_main_variant here (and pass that to the |
7923 | `lookup_type_die' routine) because the ..._TYPE node we have | |
7924 | might simply be a *copy* of some original type node (where the | |
7925 | copy was created to help us keep track of typedef names) and | |
7926 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 7927 | ..._TYPE node. */ |
0e98f924 AH |
7928 | if (TREE_CODE (type) != VECTOR_TYPE) |
7929 | mod_type_die = lookup_type_die (type_main_variant (type)); | |
7930 | else | |
7931 | /* Vectors have the debugging information in the type, | |
7932 | not the main variant. */ | |
7933 | mod_type_die = lookup_type_die (type); | |
3a88cbd1 JL |
7934 | if (mod_type_die == NULL) |
7935 | abort (); | |
a3f97cbb | 7936 | } |
3d2999ba MK |
7937 | |
7938 | /* We want to equate the qualified type to the die below. */ | |
8370aa3a | 7939 | type = qualified_type; |
a3f97cbb | 7940 | } |
71dfc51f | 7941 | |
8370aa3a RH |
7942 | if (type) |
7943 | equate_type_number_to_die (type, mod_type_die); | |
dfcf9891 | 7944 | if (item_type) |
71dfc51f RK |
7945 | /* We must do this after the equate_type_number_to_die call, in case |
7946 | this is a recursive type. This ensures that the modified_type_die | |
7947 | recursion will terminate even if the type is recursive. Recursive | |
7948 | types are possible in Ada. */ | |
7949 | sub_die = modified_type_die (item_type, | |
7950 | TYPE_READONLY (item_type), | |
7951 | TYPE_VOLATILE (item_type), | |
7952 | context_die); | |
7953 | ||
a3f97cbb | 7954 | if (sub_die != NULL) |
71dfc51f RK |
7955 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
7956 | ||
a3f97cbb JW |
7957 | return mod_type_die; |
7958 | } | |
7959 | ||
a3f97cbb | 7960 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6d2f8887 | 7961 | an enumerated type. */ |
71dfc51f RK |
7962 | |
7963 | static inline int | |
7080f735 | 7964 | type_is_enum (tree type) |
a3f97cbb JW |
7965 | { |
7966 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
7967 | } | |
7968 | ||
7d9d8943 AM |
7969 | /* Return the register number described by a given RTL node. */ |
7970 | ||
7971 | static unsigned int | |
7080f735 | 7972 | reg_number (rtx rtl) |
7d9d8943 | 7973 | { |
b3694847 | 7974 | unsigned regno = REGNO (rtl); |
7d9d8943 AM |
7975 | |
7976 | if (regno >= FIRST_PSEUDO_REGISTER) | |
e7af1d45 | 7977 | abort (); |
7d9d8943 | 7978 | |
e7af1d45 | 7979 | return DBX_REGISTER_NUMBER (regno); |
7d9d8943 AM |
7980 | } |
7981 | ||
e7af1d45 | 7982 | /* Return a location descriptor that designates a machine register or |
96714395 | 7983 | zero if there is none. */ |
71dfc51f | 7984 | |
a3f97cbb | 7985 | static dw_loc_descr_ref |
7080f735 | 7986 | reg_loc_descriptor (rtx rtl) |
a3f97cbb | 7987 | { |
d22c2324 | 7988 | unsigned reg; |
96714395 | 7989 | rtx regs; |
71dfc51f | 7990 | |
e7af1d45 RK |
7991 | if (REGNO (rtl) >= FIRST_PSEUDO_REGISTER) |
7992 | return 0; | |
7993 | ||
7994 | reg = reg_number (rtl); | |
96714395 AH |
7995 | regs = (*targetm.dwarf_register_span) (rtl); |
7996 | ||
7997 | if (HARD_REGNO_NREGS (reg, GET_MODE (rtl)) > 1 | |
7998 | || regs) | |
7999 | return multiple_reg_loc_descriptor (rtl, regs); | |
8000 | else | |
8001 | return one_reg_loc_descriptor (reg); | |
8002 | } | |
8003 | ||
8004 | /* Return a location descriptor that designates a machine register for | |
8005 | a given hard register number. */ | |
8006 | ||
8007 | static dw_loc_descr_ref | |
7080f735 | 8008 | one_reg_loc_descriptor (unsigned int regno) |
96714395 AH |
8009 | { |
8010 | if (regno <= 31) | |
8011 | return new_loc_descr (DW_OP_reg0 + regno, 0, 0); | |
d22c2324 | 8012 | else |
96714395 AH |
8013 | return new_loc_descr (DW_OP_regx, regno, 0); |
8014 | } | |
8015 | ||
8016 | /* Given an RTL of a register, return a location descriptor that | |
8017 | designates a value that spans more than one register. */ | |
8018 | ||
8019 | static dw_loc_descr_ref | |
7080f735 | 8020 | multiple_reg_loc_descriptor (rtx rtl, rtx regs) |
96714395 AH |
8021 | { |
8022 | int nregs, size, i; | |
8023 | unsigned reg; | |
8024 | dw_loc_descr_ref loc_result = NULL; | |
71dfc51f | 8025 | |
96714395 AH |
8026 | reg = reg_number (rtl); |
8027 | nregs = HARD_REGNO_NREGS (reg, GET_MODE (rtl)); | |
8028 | ||
8029 | /* Simple, contiguous registers. */ | |
8030 | if (regs == NULL_RTX) | |
8031 | { | |
8032 | size = GET_MODE_SIZE (GET_MODE (rtl)) / nregs; | |
8033 | ||
8034 | loc_result = NULL; | |
8035 | while (nregs--) | |
8036 | { | |
8037 | dw_loc_descr_ref t; | |
8038 | ||
96714395 AH |
8039 | t = one_reg_loc_descriptor (reg); |
8040 | add_loc_descr (&loc_result, t); | |
8041 | add_loc_descr (&loc_result, new_loc_descr (DW_OP_piece, size, 0)); | |
31ca3635 | 8042 | ++reg; |
96714395 AH |
8043 | } |
8044 | return loc_result; | |
8045 | } | |
8046 | ||
8047 | /* Now onto stupid register sets in non contiguous locations. */ | |
8048 | ||
8049 | if (GET_CODE (regs) != PARALLEL) | |
8050 | abort (); | |
8051 | ||
8052 | size = GET_MODE_SIZE (GET_MODE (XVECEXP (regs, 0, 0))); | |
8053 | loc_result = NULL; | |
8054 | ||
8055 | for (i = 0; i < XVECLEN (regs, 0); ++i) | |
8056 | { | |
8057 | dw_loc_descr_ref t; | |
8058 | ||
8059 | t = one_reg_loc_descriptor (REGNO (XVECEXP (regs, 0, i))); | |
8060 | add_loc_descr (&loc_result, t); | |
8061 | size = GET_MODE_SIZE (GET_MODE (XVECEXP (regs, 0, 0))); | |
8062 | add_loc_descr (&loc_result, new_loc_descr (DW_OP_piece, size, 0)); | |
8063 | } | |
a3f97cbb JW |
8064 | return loc_result; |
8065 | } | |
8066 | ||
d8041cc8 RH |
8067 | /* Return a location descriptor that designates a constant. */ |
8068 | ||
8069 | static dw_loc_descr_ref | |
7080f735 | 8070 | int_loc_descriptor (HOST_WIDE_INT i) |
d8041cc8 RH |
8071 | { |
8072 | enum dwarf_location_atom op; | |
8073 | ||
8074 | /* Pick the smallest representation of a constant, rather than just | |
8075 | defaulting to the LEB encoding. */ | |
8076 | if (i >= 0) | |
8077 | { | |
8078 | if (i <= 31) | |
8079 | op = DW_OP_lit0 + i; | |
8080 | else if (i <= 0xff) | |
8081 | op = DW_OP_const1u; | |
8082 | else if (i <= 0xffff) | |
8083 | op = DW_OP_const2u; | |
8084 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
8085 | || i <= 0xffffffff) | |
8086 | op = DW_OP_const4u; | |
8087 | else | |
8088 | op = DW_OP_constu; | |
8089 | } | |
8090 | else | |
8091 | { | |
8092 | if (i >= -0x80) | |
8093 | op = DW_OP_const1s; | |
8094 | else if (i >= -0x8000) | |
8095 | op = DW_OP_const2s; | |
8096 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
8097 | || i >= -0x80000000) | |
8098 | op = DW_OP_const4s; | |
8099 | else | |
8100 | op = DW_OP_consts; | |
8101 | } | |
8102 | ||
8103 | return new_loc_descr (op, i, 0); | |
8104 | } | |
8105 | ||
a3f97cbb | 8106 | /* Return a location descriptor that designates a base+offset location. */ |
71dfc51f | 8107 | |
a3f97cbb | 8108 | static dw_loc_descr_ref |
7080f735 | 8109 | based_loc_descr (unsigned int reg, long int offset) |
a3f97cbb | 8110 | { |
b3694847 | 8111 | dw_loc_descr_ref loc_result; |
810429b7 JM |
8112 | /* For the "frame base", we use the frame pointer or stack pointer |
8113 | registers, since the RTL for local variables is relative to one of | |
8114 | them. */ | |
b3694847 SS |
8115 | unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed |
8116 | ? HARD_FRAME_POINTER_REGNUM | |
8117 | : STACK_POINTER_REGNUM); | |
71dfc51f | 8118 | |
a3f97cbb | 8119 | if (reg == fp_reg) |
71dfc51f | 8120 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 8121 | else if (reg <= 31) |
71dfc51f | 8122 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 8123 | else |
71dfc51f RK |
8124 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
8125 | ||
a3f97cbb JW |
8126 | return loc_result; |
8127 | } | |
8128 | ||
8129 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
8130 | |
8131 | static inline int | |
7080f735 | 8132 | is_based_loc (rtx rtl) |
a3f97cbb | 8133 | { |
173bf5be KH |
8134 | return (GET_CODE (rtl) == PLUS |
8135 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
8136 | && REGNO (XEXP (rtl, 0)) < FIRST_PSEUDO_REGISTER | |
8137 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
8138 | } |
8139 | ||
8140 | /* The following routine converts the RTL for a variable or parameter | |
8141 | (resident in memory) into an equivalent Dwarf representation of a | |
8142 | mechanism for getting the address of that same variable onto the top of a | |
8143 | hypothetical "address evaluation" stack. | |
71dfc51f | 8144 | |
a3f97cbb JW |
8145 | When creating memory location descriptors, we are effectively transforming |
8146 | the RTL for a memory-resident object into its Dwarf postfix expression | |
8147 | equivalent. This routine recursively descends an RTL tree, turning | |
e60d4d7b JL |
8148 | it into Dwarf postfix code as it goes. |
8149 | ||
8150 | MODE is the mode of the memory reference, needed to handle some | |
e7af1d45 RK |
8151 | autoincrement addressing modes. |
8152 | ||
8153 | Return 0 if we can't represent the location. */ | |
71dfc51f | 8154 | |
a3f97cbb | 8155 | static dw_loc_descr_ref |
7080f735 | 8156 | mem_loc_descriptor (rtx rtl, enum machine_mode mode) |
a3f97cbb JW |
8157 | { |
8158 | dw_loc_descr_ref mem_loc_result = NULL; | |
e7af1d45 | 8159 | |
556273e0 | 8160 | /* Note that for a dynamically sized array, the location we will generate a |
a3f97cbb JW |
8161 | description of here will be the lowest numbered location which is |
8162 | actually within the array. That's *not* necessarily the same as the | |
8163 | zeroth element of the array. */ | |
71dfc51f | 8164 | |
69bd9368 | 8165 | rtl = (*targetm.delegitimize_address) (rtl); |
1865dbb5 | 8166 | |
a3f97cbb JW |
8167 | switch (GET_CODE (rtl)) |
8168 | { | |
e60d4d7b JL |
8169 | case POST_INC: |
8170 | case POST_DEC: | |
e2134eea | 8171 | case POST_MODIFY: |
e60d4d7b JL |
8172 | /* POST_INC and POST_DEC can be handled just like a SUBREG. So we |
8173 | just fall into the SUBREG code. */ | |
8174 | ||
2ad9852d | 8175 | /* ... fall through ... */ |
e60d4d7b | 8176 | |
a3f97cbb JW |
8177 | case SUBREG: |
8178 | /* The case of a subreg may arise when we have a local (register) | |
73c68f61 SS |
8179 | variable or a formal (register) parameter which doesn't quite fill |
8180 | up an entire register. For now, just assume that it is | |
8181 | legitimate to make the Dwarf info refer to the whole register which | |
8182 | contains the given subreg. */ | |
ddef6bc7 | 8183 | rtl = SUBREG_REG (rtl); |
71dfc51f | 8184 | |
2ad9852d | 8185 | /* ... fall through ... */ |
a3f97cbb JW |
8186 | |
8187 | case REG: | |
8188 | /* Whenever a register number forms a part of the description of the | |
73c68f61 SS |
8189 | method for calculating the (dynamic) address of a memory resident |
8190 | object, DWARF rules require the register number be referred to as | |
8191 | a "base register". This distinction is not based in any way upon | |
8192 | what category of register the hardware believes the given register | |
8193 | belongs to. This is strictly DWARF terminology we're dealing with | |
8194 | here. Note that in cases where the location of a memory-resident | |
8195 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
8196 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
8197 | may just be OP_BASEREG (basereg). This may look deceptively like | |
8198 | the object in question was allocated to a register (rather than in | |
8199 | memory) so DWARF consumers need to be aware of the subtle | |
8200 | distinction between OP_REG and OP_BASEREG. */ | |
e7af1d45 RK |
8201 | if (REGNO (rtl) < FIRST_PSEUDO_REGISTER) |
8202 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
a3f97cbb JW |
8203 | break; |
8204 | ||
8205 | case MEM: | |
f7d2b0ed | 8206 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
e7af1d45 RK |
8207 | if (mem_loc_result != 0) |
8208 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
a3f97cbb JW |
8209 | break; |
8210 | ||
1ce324c3 EB |
8211 | case LO_SUM: |
8212 | rtl = XEXP (rtl, 1); | |
8213 | ||
8214 | /* ... fall through ... */ | |
8215 | ||
d8041cc8 RH |
8216 | case LABEL_REF: |
8217 | /* Some ports can transform a symbol ref into a label ref, because | |
7080f735 AJ |
8218 | the symbol ref is too far away and has to be dumped into a constant |
8219 | pool. */ | |
a3f97cbb JW |
8220 | case CONST: |
8221 | case SYMBOL_REF: | |
6331d1c1 | 8222 | /* Alternatively, the symbol in the constant pool might be referenced |
c6f9b9a1 | 8223 | by a different symbol. */ |
2ad9852d | 8224 | if (GET_CODE (rtl) == SYMBOL_REF && CONSTANT_POOL_ADDRESS_P (rtl)) |
79cdfa4b | 8225 | { |
149d6f9e JJ |
8226 | bool marked; |
8227 | rtx tmp = get_pool_constant_mark (rtl, &marked); | |
2ad9852d | 8228 | |
6331d1c1 | 8229 | if (GET_CODE (tmp) == SYMBOL_REF) |
149d6f9e JJ |
8230 | { |
8231 | rtl = tmp; | |
8232 | if (CONSTANT_POOL_ADDRESS_P (tmp)) | |
8233 | get_pool_constant_mark (tmp, &marked); | |
8234 | else | |
8235 | marked = true; | |
8236 | } | |
8237 | ||
8238 | /* If all references to this pool constant were optimized away, | |
8239 | it was not output and thus we can't represent it. | |
8240 | FIXME: might try to use DW_OP_const_value here, though | |
8241 | DW_OP_piece complicates it. */ | |
8242 | if (!marked) | |
8243 | return 0; | |
79cdfa4b TM |
8244 | } |
8245 | ||
a3f97cbb JW |
8246 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); |
8247 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
c470afad RK |
8248 | mem_loc_result->dw_loc_oprnd1.v.val_addr = rtl; |
8249 | VARRAY_PUSH_RTX (used_rtx_varray, rtl); | |
a3f97cbb JW |
8250 | break; |
8251 | ||
e2134eea JH |
8252 | case PRE_MODIFY: |
8253 | /* Extract the PLUS expression nested inside and fall into | |
73c68f61 | 8254 | PLUS code below. */ |
e2134eea JH |
8255 | rtl = XEXP (rtl, 1); |
8256 | goto plus; | |
8257 | ||
e60d4d7b JL |
8258 | case PRE_INC: |
8259 | case PRE_DEC: | |
8260 | /* Turn these into a PLUS expression and fall into the PLUS code | |
8261 | below. */ | |
8262 | rtl = gen_rtx_PLUS (word_mode, XEXP (rtl, 0), | |
8263 | GEN_INT (GET_CODE (rtl) == PRE_INC | |
556273e0 KH |
8264 | ? GET_MODE_UNIT_SIZE (mode) |
8265 | : -GET_MODE_UNIT_SIZE (mode))); | |
8266 | ||
2ad9852d | 8267 | /* ... fall through ... */ |
e60d4d7b | 8268 | |
a3f97cbb | 8269 | case PLUS: |
e2134eea | 8270 | plus: |
a3f97cbb | 8271 | if (is_based_loc (rtl)) |
71dfc51f RK |
8272 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
8273 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
8274 | else |
8275 | { | |
d8041cc8 | 8276 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode); |
e7af1d45 RK |
8277 | if (mem_loc_result == 0) |
8278 | break; | |
d8041cc8 RH |
8279 | |
8280 | if (GET_CODE (XEXP (rtl, 1)) == CONST_INT | |
8281 | && INTVAL (XEXP (rtl, 1)) >= 0) | |
e7af1d45 RK |
8282 | add_loc_descr (&mem_loc_result, |
8283 | new_loc_descr (DW_OP_plus_uconst, | |
8284 | INTVAL (XEXP (rtl, 1)), 0)); | |
d8041cc8 RH |
8285 | else |
8286 | { | |
8287 | add_loc_descr (&mem_loc_result, | |
8288 | mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
8289 | add_loc_descr (&mem_loc_result, | |
8290 | new_loc_descr (DW_OP_plus, 0, 0)); | |
8291 | } | |
a3f97cbb JW |
8292 | } |
8293 | break; | |
8294 | ||
dd2478ae | 8295 | case MULT: |
e7af1d45 RK |
8296 | { |
8297 | /* If a pseudo-reg is optimized away, it is possible for it to | |
8298 | be replaced with a MEM containing a multiply. */ | |
8299 | dw_loc_descr_ref op0 = mem_loc_descriptor (XEXP (rtl, 0), mode); | |
8300 | dw_loc_descr_ref op1 = mem_loc_descriptor (XEXP (rtl, 1), mode); | |
8301 | ||
8302 | if (op0 == 0 || op1 == 0) | |
8303 | break; | |
8304 | ||
8305 | mem_loc_result = op0; | |
8306 | add_loc_descr (&mem_loc_result, op1); | |
8307 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); | |
8308 | break; | |
8309 | } | |
dd2478ae | 8310 | |
a3f97cbb | 8311 | case CONST_INT: |
d8041cc8 | 8312 | mem_loc_result = int_loc_descriptor (INTVAL (rtl)); |
a3f97cbb JW |
8313 | break; |
8314 | ||
a9e8a5ee RK |
8315 | case ADDRESSOF: |
8316 | /* If this is a MEM, return its address. Otherwise, we can't | |
8317 | represent this. */ | |
8318 | if (GET_CODE (XEXP (rtl, 0)) == MEM) | |
8319 | return mem_loc_descriptor (XEXP (XEXP (rtl, 0), 0), mode); | |
8320 | else | |
8321 | return 0; | |
8322 | ||
a3f97cbb JW |
8323 | default: |
8324 | abort (); | |
8325 | } | |
71dfc51f | 8326 | |
a3f97cbb JW |
8327 | return mem_loc_result; |
8328 | } | |
8329 | ||
956d6950 | 8330 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
8331 | This is typically a complex variable. */ |
8332 | ||
8333 | static dw_loc_descr_ref | |
7080f735 | 8334 | concat_loc_descriptor (rtx x0, rtx x1) |
4401bf24 JL |
8335 | { |
8336 | dw_loc_descr_ref cc_loc_result = NULL; | |
e7af1d45 RK |
8337 | dw_loc_descr_ref x0_ref = loc_descriptor (x0); |
8338 | dw_loc_descr_ref x1_ref = loc_descriptor (x1); | |
4401bf24 | 8339 | |
e7af1d45 RK |
8340 | if (x0_ref == 0 || x1_ref == 0) |
8341 | return 0; | |
8342 | ||
8343 | cc_loc_result = x0_ref; | |
4401bf24 | 8344 | add_loc_descr (&cc_loc_result, |
e7af1d45 RK |
8345 | new_loc_descr (DW_OP_piece, |
8346 | GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
4401bf24 | 8347 | |
e7af1d45 | 8348 | add_loc_descr (&cc_loc_result, x1_ref); |
4401bf24 | 8349 | add_loc_descr (&cc_loc_result, |
e7af1d45 RK |
8350 | new_loc_descr (DW_OP_piece, |
8351 | GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
4401bf24 JL |
8352 | |
8353 | return cc_loc_result; | |
8354 | } | |
8355 | ||
a3f97cbb JW |
8356 | /* Output a proper Dwarf location descriptor for a variable or parameter |
8357 | which is either allocated in a register or in a memory location. For a | |
8358 | register, we just generate an OP_REG and the register number. For a | |
8359 | memory location we provide a Dwarf postfix expression describing how to | |
e7af1d45 RK |
8360 | generate the (dynamic) address of the object onto the address stack. |
8361 | ||
8362 | If we don't know how to describe it, return 0. */ | |
71dfc51f | 8363 | |
a3f97cbb | 8364 | static dw_loc_descr_ref |
7080f735 | 8365 | loc_descriptor (rtx rtl) |
a3f97cbb JW |
8366 | { |
8367 | dw_loc_descr_ref loc_result = NULL; | |
e7af1d45 | 8368 | |
a3f97cbb JW |
8369 | switch (GET_CODE (rtl)) |
8370 | { | |
8371 | case SUBREG: | |
a3f97cbb | 8372 | /* The case of a subreg may arise when we have a local (register) |
73c68f61 SS |
8373 | variable or a formal (register) parameter which doesn't quite fill |
8374 | up an entire register. For now, just assume that it is | |
8375 | legitimate to make the Dwarf info refer to the whole register which | |
8376 | contains the given subreg. */ | |
ddef6bc7 | 8377 | rtl = SUBREG_REG (rtl); |
71dfc51f | 8378 | |
2ad9852d | 8379 | /* ... fall through ... */ |
a3f97cbb JW |
8380 | |
8381 | case REG: | |
5c90448c | 8382 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
8383 | break; |
8384 | ||
8385 | case MEM: | |
e60d4d7b | 8386 | loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
a3f97cbb JW |
8387 | break; |
8388 | ||
4401bf24 JL |
8389 | case CONCAT: |
8390 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
8391 | break; | |
8392 | ||
a3f97cbb | 8393 | default: |
71dfc51f | 8394 | abort (); |
a3f97cbb | 8395 | } |
71dfc51f | 8396 | |
a3f97cbb JW |
8397 | return loc_result; |
8398 | } | |
8399 | ||
2ad9852d RK |
8400 | /* Similar, but generate the descriptor from trees instead of rtl. This comes |
8401 | up particularly with variable length arrays. If ADDRESSP is nonzero, we are | |
8402 | looking for an address. Otherwise, we return a value. If we can't make a | |
8403 | descriptor, return 0. */ | |
d8041cc8 RH |
8404 | |
8405 | static dw_loc_descr_ref | |
7080f735 | 8406 | loc_descriptor_from_tree (tree loc, int addressp) |
d8041cc8 | 8407 | { |
e7af1d45 RK |
8408 | dw_loc_descr_ref ret, ret1; |
8409 | int indirect_p = 0; | |
d8041cc8 RH |
8410 | int unsignedp = TREE_UNSIGNED (TREE_TYPE (loc)); |
8411 | enum dwarf_location_atom op; | |
8412 | ||
8413 | /* ??? Most of the time we do not take proper care for sign/zero | |
8414 | extending the values properly. Hopefully this won't be a real | |
8415 | problem... */ | |
8416 | ||
8417 | switch (TREE_CODE (loc)) | |
8418 | { | |
8419 | case ERROR_MARK: | |
e7af1d45 | 8420 | return 0; |
d8041cc8 | 8421 | |
b4ae5201 | 8422 | case WITH_RECORD_EXPR: |
e7af1d45 | 8423 | case PLACEHOLDER_EXPR: |
b4ae5201 RK |
8424 | /* This case involves extracting fields from an object to determine the |
8425 | position of other fields. We don't try to encode this here. The | |
8426 | only user of this is Ada, which encodes the needed information using | |
8427 | the names of types. */ | |
e7af1d45 | 8428 | return 0; |
b4ae5201 | 8429 | |
aea9695c RK |
8430 | case CALL_EXPR: |
8431 | return 0; | |
8432 | ||
8433 | case ADDR_EXPR: | |
8434 | /* We can support this only if we can look through conversions and | |
8435 | find an INDIRECT_EXPR. */ | |
8436 | for (loc = TREE_OPERAND (loc, 0); | |
8437 | TREE_CODE (loc) == CONVERT_EXPR || TREE_CODE (loc) == NOP_EXPR | |
8438 | || TREE_CODE (loc) == NON_LVALUE_EXPR | |
8439 | || TREE_CODE (loc) == VIEW_CONVERT_EXPR | |
8440 | || TREE_CODE (loc) == SAVE_EXPR; | |
8441 | loc = TREE_OPERAND (loc, 0)) | |
8442 | ; | |
8443 | ||
8444 | return (TREE_CODE (loc) == INDIRECT_REF | |
8445 | ? loc_descriptor_from_tree (TREE_OPERAND (loc, 0), addressp) | |
8446 | : 0); | |
8447 | ||
d8041cc8 | 8448 | case VAR_DECL: |
b9203463 RH |
8449 | if (DECL_THREAD_LOCAL (loc)) |
8450 | { | |
8451 | rtx rtl; | |
8452 | ||
8453 | #ifndef ASM_OUTPUT_DWARF_DTPREL | |
8454 | /* If this is not defined, we have no way to emit the data. */ | |
8455 | return 0; | |
8456 | #endif | |
8457 | ||
8458 | /* The way DW_OP_GNU_push_tls_address is specified, we can only | |
8459 | look up addresses of objects in the current module. */ | |
3c655f42 | 8460 | if (DECL_EXTERNAL (loc)) |
b9203463 RH |
8461 | return 0; |
8462 | ||
8463 | rtl = rtl_for_decl_location (loc); | |
8464 | if (rtl == NULL_RTX) | |
8465 | return 0; | |
8466 | ||
8467 | if (GET_CODE (rtl) != MEM) | |
8468 | return 0; | |
8469 | rtl = XEXP (rtl, 0); | |
8470 | if (! CONSTANT_P (rtl)) | |
8471 | return 0; | |
8472 | ||
8473 | ret = new_loc_descr (INTERNAL_DW_OP_tls_addr, 0, 0); | |
8474 | ret->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
8475 | ret->dw_loc_oprnd1.v.val_addr = rtl; | |
8476 | ||
8477 | ret1 = new_loc_descr (DW_OP_GNU_push_tls_address, 0, 0); | |
8478 | add_loc_descr (&ret, ret1); | |
8479 | ||
8480 | indirect_p = 1; | |
8481 | break; | |
8482 | } | |
8483 | /* FALLTHRU */ | |
8484 | ||
d8041cc8 RH |
8485 | case PARM_DECL: |
8486 | { | |
8487 | rtx rtl = rtl_for_decl_location (loc); | |
d8041cc8 | 8488 | |
a97c9600 | 8489 | if (rtl == NULL_RTX) |
e7af1d45 | 8490 | return 0; |
a97c9600 | 8491 | else if (CONSTANT_P (rtl)) |
d8041cc8 RH |
8492 | { |
8493 | ret = new_loc_descr (DW_OP_addr, 0, 0); | |
8494 | ret->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
8495 | ret->dw_loc_oprnd1.v.val_addr = rtl; | |
e7af1d45 | 8496 | indirect_p = 1; |
d8041cc8 RH |
8497 | } |
8498 | else | |
8499 | { | |
c28abdf0 RH |
8500 | enum machine_mode mode = GET_MODE (rtl); |
8501 | ||
d8041cc8 RH |
8502 | if (GET_CODE (rtl) == MEM) |
8503 | { | |
e7af1d45 | 8504 | indirect_p = 1; |
d8041cc8 RH |
8505 | rtl = XEXP (rtl, 0); |
8506 | } | |
2ad9852d | 8507 | |
d8041cc8 RH |
8508 | ret = mem_loc_descriptor (rtl, mode); |
8509 | } | |
8510 | } | |
8511 | break; | |
8512 | ||
8513 | case INDIRECT_REF: | |
8514 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 | 8515 | indirect_p = 1; |
d8041cc8 RH |
8516 | break; |
8517 | ||
749552c4 RK |
8518 | case COMPOUND_EXPR: |
8519 | return loc_descriptor_from_tree (TREE_OPERAND (loc, 1), addressp); | |
8520 | ||
ed972b14 RK |
8521 | case NOP_EXPR: |
8522 | case CONVERT_EXPR: | |
8523 | case NON_LVALUE_EXPR: | |
ed239f5a | 8524 | case VIEW_CONVERT_EXPR: |
b4ae5201 | 8525 | case SAVE_EXPR: |
032cb602 | 8526 | case MODIFY_EXPR: |
ed972b14 | 8527 | return loc_descriptor_from_tree (TREE_OPERAND (loc, 0), addressp); |
e57cabac | 8528 | |
d8041cc8 RH |
8529 | case COMPONENT_REF: |
8530 | case BIT_FIELD_REF: | |
8531 | case ARRAY_REF: | |
b4e3fabb | 8532 | case ARRAY_RANGE_REF: |
d8041cc8 RH |
8533 | { |
8534 | tree obj, offset; | |
8535 | HOST_WIDE_INT bitsize, bitpos, bytepos; | |
8536 | enum machine_mode mode; | |
8537 | int volatilep; | |
d8041cc8 RH |
8538 | |
8539 | obj = get_inner_reference (loc, &bitsize, &bitpos, &offset, &mode, | |
a06ef755 | 8540 | &unsignedp, &volatilep); |
e7af1d45 RK |
8541 | |
8542 | if (obj == loc) | |
8543 | return 0; | |
8544 | ||
d8041cc8 | 8545 | ret = loc_descriptor_from_tree (obj, 1); |
e7af1d45 | 8546 | if (ret == 0 |
2ad9852d | 8547 | || bitpos % BITS_PER_UNIT != 0 || bitsize % BITS_PER_UNIT != 0) |
e7af1d45 | 8548 | return 0; |
d8041cc8 RH |
8549 | |
8550 | if (offset != NULL_TREE) | |
8551 | { | |
8552 | /* Variable offset. */ | |
8553 | add_loc_descr (&ret, loc_descriptor_from_tree (offset, 0)); | |
8554 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
8555 | } | |
8556 | ||
e7af1d45 RK |
8557 | if (!addressp) |
8558 | indirect_p = 1; | |
d8041cc8 RH |
8559 | |
8560 | bytepos = bitpos / BITS_PER_UNIT; | |
8561 | if (bytepos > 0) | |
8562 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus_uconst, bytepos, 0)); | |
8563 | else if (bytepos < 0) | |
8564 | { | |
8565 | add_loc_descr (&ret, int_loc_descriptor (bytepos)); | |
8566 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
8567 | } | |
8568 | break; | |
8569 | } | |
8570 | ||
8571 | case INTEGER_CST: | |
8572 | if (host_integerp (loc, 0)) | |
8573 | ret = int_loc_descriptor (tree_low_cst (loc, 0)); | |
e7af1d45 RK |
8574 | else |
8575 | return 0; | |
d8041cc8 | 8576 | break; |
d8041cc8 | 8577 | |
c67b2a58 RK |
8578 | case CONSTRUCTOR: |
8579 | { | |
75c20980 RH |
8580 | /* Get an RTL for this, if something has been emitted. */ |
8581 | rtx rtl = lookup_constant_def (loc); | |
8582 | enum machine_mode mode; | |
8583 | ||
8584 | if (GET_CODE (rtl) != MEM) | |
8585 | return 0; | |
8586 | mode = GET_MODE (rtl); | |
8587 | rtl = XEXP (rtl, 0); | |
8588 | ||
8589 | rtl = (*targetm.delegitimize_address) (rtl); | |
8590 | ||
c67b2a58 | 8591 | indirect_p = 1; |
75c20980 | 8592 | ret = mem_loc_descriptor (rtl, mode); |
c67b2a58 RK |
8593 | break; |
8594 | } | |
8595 | ||
c26fbbca | 8596 | case TRUTH_AND_EXPR: |
9702143f | 8597 | case TRUTH_ANDIF_EXPR: |
d8041cc8 RH |
8598 | case BIT_AND_EXPR: |
8599 | op = DW_OP_and; | |
8600 | goto do_binop; | |
e7af1d45 | 8601 | |
9702143f | 8602 | case TRUTH_XOR_EXPR: |
d8041cc8 RH |
8603 | case BIT_XOR_EXPR: |
8604 | op = DW_OP_xor; | |
8605 | goto do_binop; | |
e7af1d45 | 8606 | |
9702143f RK |
8607 | case TRUTH_OR_EXPR: |
8608 | case TRUTH_ORIF_EXPR: | |
d8041cc8 RH |
8609 | case BIT_IOR_EXPR: |
8610 | op = DW_OP_or; | |
8611 | goto do_binop; | |
e7af1d45 | 8612 | |
8dcea3f3 VC |
8613 | case FLOOR_DIV_EXPR: |
8614 | case CEIL_DIV_EXPR: | |
8615 | case ROUND_DIV_EXPR: | |
d8041cc8 RH |
8616 | case TRUNC_DIV_EXPR: |
8617 | op = DW_OP_div; | |
8618 | goto do_binop; | |
e7af1d45 | 8619 | |
d8041cc8 RH |
8620 | case MINUS_EXPR: |
8621 | op = DW_OP_minus; | |
8622 | goto do_binop; | |
e7af1d45 | 8623 | |
8dcea3f3 VC |
8624 | case FLOOR_MOD_EXPR: |
8625 | case CEIL_MOD_EXPR: | |
8626 | case ROUND_MOD_EXPR: | |
d8041cc8 RH |
8627 | case TRUNC_MOD_EXPR: |
8628 | op = DW_OP_mod; | |
8629 | goto do_binop; | |
e7af1d45 | 8630 | |
d8041cc8 RH |
8631 | case MULT_EXPR: |
8632 | op = DW_OP_mul; | |
8633 | goto do_binop; | |
e7af1d45 | 8634 | |
d8041cc8 RH |
8635 | case LSHIFT_EXPR: |
8636 | op = DW_OP_shl; | |
8637 | goto do_binop; | |
e7af1d45 | 8638 | |
d8041cc8 RH |
8639 | case RSHIFT_EXPR: |
8640 | op = (unsignedp ? DW_OP_shr : DW_OP_shra); | |
8641 | goto do_binop; | |
e7af1d45 | 8642 | |
d8041cc8 RH |
8643 | case PLUS_EXPR: |
8644 | if (TREE_CODE (TREE_OPERAND (loc, 1)) == INTEGER_CST | |
8645 | && host_integerp (TREE_OPERAND (loc, 1), 0)) | |
8646 | { | |
8647 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8648 | if (ret == 0) |
8649 | return 0; | |
8650 | ||
d8041cc8 RH |
8651 | add_loc_descr (&ret, |
8652 | new_loc_descr (DW_OP_plus_uconst, | |
8653 | tree_low_cst (TREE_OPERAND (loc, 1), | |
8654 | 0), | |
8655 | 0)); | |
8656 | break; | |
8657 | } | |
e7af1d45 | 8658 | |
d8041cc8 RH |
8659 | op = DW_OP_plus; |
8660 | goto do_binop; | |
2ad9852d | 8661 | |
d8041cc8 RH |
8662 | case LE_EXPR: |
8663 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8664 | return 0; |
8665 | ||
d8041cc8 RH |
8666 | op = DW_OP_le; |
8667 | goto do_binop; | |
e7af1d45 | 8668 | |
d8041cc8 RH |
8669 | case GE_EXPR: |
8670 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8671 | return 0; |
8672 | ||
d8041cc8 RH |
8673 | op = DW_OP_ge; |
8674 | goto do_binop; | |
e7af1d45 | 8675 | |
d8041cc8 RH |
8676 | case LT_EXPR: |
8677 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8678 | return 0; |
8679 | ||
d8041cc8 RH |
8680 | op = DW_OP_lt; |
8681 | goto do_binop; | |
e7af1d45 | 8682 | |
d8041cc8 RH |
8683 | case GT_EXPR: |
8684 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8685 | return 0; |
8686 | ||
d8041cc8 RH |
8687 | op = DW_OP_gt; |
8688 | goto do_binop; | |
e7af1d45 | 8689 | |
d8041cc8 RH |
8690 | case EQ_EXPR: |
8691 | op = DW_OP_eq; | |
8692 | goto do_binop; | |
e7af1d45 | 8693 | |
d8041cc8 RH |
8694 | case NE_EXPR: |
8695 | op = DW_OP_ne; | |
8696 | goto do_binop; | |
8697 | ||
8698 | do_binop: | |
8699 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8700 | ret1 = loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0); |
8701 | if (ret == 0 || ret1 == 0) | |
8702 | return 0; | |
8703 | ||
8704 | add_loc_descr (&ret, ret1); | |
d8041cc8 RH |
8705 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); |
8706 | break; | |
8707 | ||
9702143f | 8708 | case TRUTH_NOT_EXPR: |
d8041cc8 RH |
8709 | case BIT_NOT_EXPR: |
8710 | op = DW_OP_not; | |
8711 | goto do_unop; | |
e7af1d45 | 8712 | |
d8041cc8 RH |
8713 | case ABS_EXPR: |
8714 | op = DW_OP_abs; | |
8715 | goto do_unop; | |
e7af1d45 | 8716 | |
d8041cc8 RH |
8717 | case NEGATE_EXPR: |
8718 | op = DW_OP_neg; | |
8719 | goto do_unop; | |
8720 | ||
8721 | do_unop: | |
8722 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8723 | if (ret == 0) |
8724 | return 0; | |
8725 | ||
d8041cc8 RH |
8726 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); |
8727 | break; | |
8728 | ||
8729 | case MAX_EXPR: | |
8730 | loc = build (COND_EXPR, TREE_TYPE (loc), | |
8731 | build (LT_EXPR, integer_type_node, | |
8732 | TREE_OPERAND (loc, 0), TREE_OPERAND (loc, 1)), | |
8733 | TREE_OPERAND (loc, 1), TREE_OPERAND (loc, 0)); | |
2ad9852d | 8734 | |
3ef42a0c | 8735 | /* ... fall through ... */ |
d8041cc8 RH |
8736 | |
8737 | case COND_EXPR: | |
8738 | { | |
e7af1d45 RK |
8739 | dw_loc_descr_ref lhs |
8740 | = loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0); | |
8741 | dw_loc_descr_ref rhs | |
8742 | = loc_descriptor_from_tree (TREE_OPERAND (loc, 2), 0); | |
d8041cc8 RH |
8743 | dw_loc_descr_ref bra_node, jump_node, tmp; |
8744 | ||
8745 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8746 | if (ret == 0 || lhs == 0 || rhs == 0) |
8747 | return 0; | |
8748 | ||
d8041cc8 RH |
8749 | bra_node = new_loc_descr (DW_OP_bra, 0, 0); |
8750 | add_loc_descr (&ret, bra_node); | |
8751 | ||
e7af1d45 | 8752 | add_loc_descr (&ret, rhs); |
d8041cc8 RH |
8753 | jump_node = new_loc_descr (DW_OP_skip, 0, 0); |
8754 | add_loc_descr (&ret, jump_node); | |
8755 | ||
e7af1d45 | 8756 | add_loc_descr (&ret, lhs); |
d8041cc8 | 8757 | bra_node->dw_loc_oprnd1.val_class = dw_val_class_loc; |
e7af1d45 | 8758 | bra_node->dw_loc_oprnd1.v.val_loc = lhs; |
d8041cc8 RH |
8759 | |
8760 | /* ??? Need a node to point the skip at. Use a nop. */ | |
8761 | tmp = new_loc_descr (DW_OP_nop, 0, 0); | |
8762 | add_loc_descr (&ret, tmp); | |
8763 | jump_node->dw_loc_oprnd1.val_class = dw_val_class_loc; | |
8764 | jump_node->dw_loc_oprnd1.v.val_loc = tmp; | |
8765 | } | |
8766 | break; | |
8767 | ||
8768 | default: | |
7d445f15 RH |
8769 | /* Leave front-end specific codes as simply unknown. This comes |
8770 | up, for instance, with the C STMT_EXPR. */ | |
8771 | if ((unsigned int) TREE_CODE (loc) | |
8772 | >= (unsigned int) LAST_AND_UNUSED_TREE_CODE) | |
8773 | return 0; | |
8774 | ||
8775 | /* Otherwise this is a generic code; we should just lists all of | |
8776 | these explicitly. Aborting means we forgot one. */ | |
d8041cc8 RH |
8777 | abort (); |
8778 | } | |
8779 | ||
e7af1d45 RK |
8780 | /* Show if we can't fill the request for an address. */ |
8781 | if (addressp && indirect_p == 0) | |
8782 | return 0; | |
d8041cc8 RH |
8783 | |
8784 | /* If we've got an address and don't want one, dereference. */ | |
e7af1d45 | 8785 | if (!addressp && indirect_p > 0) |
d8041cc8 | 8786 | { |
e7af1d45 RK |
8787 | HOST_WIDE_INT size = int_size_in_bytes (TREE_TYPE (loc)); |
8788 | ||
8789 | if (size > DWARF2_ADDR_SIZE || size == -1) | |
8790 | return 0; | |
2ad9852d | 8791 | else if (size == DWARF2_ADDR_SIZE) |
d8041cc8 RH |
8792 | op = DW_OP_deref; |
8793 | else | |
8794 | op = DW_OP_deref_size; | |
e7af1d45 RK |
8795 | |
8796 | add_loc_descr (&ret, new_loc_descr (op, size, 0)); | |
d8041cc8 RH |
8797 | } |
8798 | ||
8799 | return ret; | |
8800 | } | |
8801 | ||
665f2503 | 8802 | /* Given a value, round it up to the lowest multiple of `boundary' |
a3f97cbb | 8803 | which is not less than the value itself. */ |
71dfc51f | 8804 | |
665f2503 | 8805 | static inline HOST_WIDE_INT |
7080f735 | 8806 | ceiling (HOST_WIDE_INT value, unsigned int boundary) |
a3f97cbb JW |
8807 | { |
8808 | return (((value + boundary - 1) / boundary) * boundary); | |
8809 | } | |
8810 | ||
8811 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
8812 | pointer to the declared type for the relevant field variable, or return | |
8813 | `integer_type_node' if the given node turns out to be an | |
8814 | ERROR_MARK node. */ | |
71dfc51f RK |
8815 | |
8816 | static inline tree | |
7080f735 | 8817 | field_type (tree decl) |
a3f97cbb | 8818 | { |
b3694847 | 8819 | tree type; |
a3f97cbb JW |
8820 | |
8821 | if (TREE_CODE (decl) == ERROR_MARK) | |
8822 | return integer_type_node; | |
8823 | ||
8824 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 8825 | if (type == NULL_TREE) |
a3f97cbb JW |
8826 | type = TREE_TYPE (decl); |
8827 | ||
8828 | return type; | |
8829 | } | |
8830 | ||
5f446d21 DD |
8831 | /* Given a pointer to a tree node, return the alignment in bits for |
8832 | it, or else return BITS_PER_WORD if the node actually turns out to | |
8833 | be an ERROR_MARK node. */ | |
71dfc51f RK |
8834 | |
8835 | static inline unsigned | |
7080f735 | 8836 | simple_type_align_in_bits (tree type) |
a3f97cbb JW |
8837 | { |
8838 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
8839 | } | |
8840 | ||
5f446d21 | 8841 | static inline unsigned |
7080f735 | 8842 | simple_decl_align_in_bits (tree decl) |
5f446d21 DD |
8843 | { |
8844 | return (TREE_CODE (decl) != ERROR_MARK) ? DECL_ALIGN (decl) : BITS_PER_WORD; | |
8845 | } | |
8846 | ||
2ad9852d RK |
8847 | /* Given a pointer to a FIELD_DECL, compute and return the byte offset of the |
8848 | lowest addressed byte of the "containing object" for the given FIELD_DECL, | |
8849 | or return 0 if we are unable to determine what that offset is, either | |
8850 | because the argument turns out to be a pointer to an ERROR_MARK node, or | |
8851 | because the offset is actually variable. (We can't handle the latter case | |
8852 | just yet). */ | |
71dfc51f | 8853 | |
665f2503 | 8854 | static HOST_WIDE_INT |
7080f735 | 8855 | field_byte_offset (tree decl) |
a3f97cbb | 8856 | { |
665f2503 | 8857 | unsigned int type_align_in_bits; |
5f446d21 | 8858 | unsigned int decl_align_in_bits; |
665f2503 | 8859 | unsigned HOST_WIDE_INT type_size_in_bits; |
665f2503 | 8860 | HOST_WIDE_INT object_offset_in_bits; |
665f2503 RK |
8861 | tree type; |
8862 | tree field_size_tree; | |
8863 | HOST_WIDE_INT bitpos_int; | |
8864 | HOST_WIDE_INT deepest_bitpos; | |
8865 | unsigned HOST_WIDE_INT field_size_in_bits; | |
a3f97cbb JW |
8866 | |
8867 | if (TREE_CODE (decl) == ERROR_MARK) | |
8868 | return 0; | |
2ad9852d | 8869 | else if (TREE_CODE (decl) != FIELD_DECL) |
a3f97cbb JW |
8870 | abort (); |
8871 | ||
8872 | type = field_type (decl); | |
a3f97cbb JW |
8873 | field_size_tree = DECL_SIZE (decl); |
8874 | ||
3df18884 RH |
8875 | /* The size could be unspecified if there was an error, or for |
8876 | a flexible array member. */ | |
50352c9c | 8877 | if (! field_size_tree) |
3df18884 | 8878 | field_size_tree = bitsize_zero_node; |
50352c9c | 8879 | |
556273e0 | 8880 | /* We cannot yet cope with fields whose positions are variable, so |
a3f97cbb JW |
8881 | for now, when we see such things, we simply return 0. Someday, we may |
8882 | be able to handle such cases, but it will be damn difficult. */ | |
665f2503 | 8883 | if (! host_integerp (bit_position (decl), 0)) |
a3f97cbb | 8884 | return 0; |
14a774a9 | 8885 | |
665f2503 | 8886 | bitpos_int = int_bit_position (decl); |
a3f97cbb | 8887 | |
3df18884 | 8888 | /* If we don't know the size of the field, pretend it's a full word. */ |
665f2503 RK |
8889 | if (host_integerp (field_size_tree, 1)) |
8890 | field_size_in_bits = tree_low_cst (field_size_tree, 1); | |
14a774a9 RK |
8891 | else |
8892 | field_size_in_bits = BITS_PER_WORD; | |
a3f97cbb JW |
8893 | |
8894 | type_size_in_bits = simple_type_size_in_bits (type); | |
a3f97cbb | 8895 | type_align_in_bits = simple_type_align_in_bits (type); |
5f446d21 | 8896 | decl_align_in_bits = simple_decl_align_in_bits (decl); |
a3f97cbb | 8897 | |
2ad9852d RK |
8898 | /* The GCC front-end doesn't make any attempt to keep track of the starting |
8899 | bit offset (relative to the start of the containing structure type) of the | |
8900 | hypothetical "containing object" for a bit-field. Thus, when computing | |
8901 | the byte offset value for the start of the "containing object" of a | |
8902 | bit-field, we must deduce this information on our own. This can be rather | |
8903 | tricky to do in some cases. For example, handling the following structure | |
8904 | type definition when compiling for an i386/i486 target (which only aligns | |
8905 | long long's to 32-bit boundaries) can be very tricky: | |
a3f97cbb JW |
8906 | |
8907 | struct S { int field1; long long field2:31; }; | |
8908 | ||
2ad9852d RK |
8909 | Fortunately, there is a simple rule-of-thumb which can be used in such |
8910 | cases. When compiling for an i386/i486, GCC will allocate 8 bytes for the | |
8911 | structure shown above. It decides to do this based upon one simple rule | |
8912 | for bit-field allocation. GCC allocates each "containing object" for each | |
8913 | bit-field at the first (i.e. lowest addressed) legitimate alignment | |
8914 | boundary (based upon the required minimum alignment for the declared type | |
8915 | of the field) which it can possibly use, subject to the condition that | |
8916 | there is still enough available space remaining in the containing object | |
8917 | (when allocated at the selected point) to fully accommodate all of the | |
8918 | bits of the bit-field itself. | |
8919 | ||
8920 | This simple rule makes it obvious why GCC allocates 8 bytes for each | |
8921 | object of the structure type shown above. When looking for a place to | |
8922 | allocate the "containing object" for `field2', the compiler simply tries | |
8923 | to allocate a 64-bit "containing object" at each successive 32-bit | |
8924 | boundary (starting at zero) until it finds a place to allocate that 64- | |
8925 | bit field such that at least 31 contiguous (and previously unallocated) | |
8926 | bits remain within that selected 64 bit field. (As it turns out, for the | |
8927 | example above, the compiler finds it is OK to allocate the "containing | |
8928 | object" 64-bit field at bit-offset zero within the structure type.) | |
8929 | ||
8930 | Here we attempt to work backwards from the limited set of facts we're | |
8931 | given, and we try to deduce from those facts, where GCC must have believed | |
8932 | that the containing object started (within the structure type). The value | |
8933 | we deduce is then used (by the callers of this routine) to generate | |
8934 | DW_AT_location and DW_AT_bit_offset attributes for fields (both bit-fields | |
8935 | and, in the case of DW_AT_location, regular fields as well). */ | |
a3f97cbb JW |
8936 | |
8937 | /* Figure out the bit-distance from the start of the structure to the | |
8938 | "deepest" bit of the bit-field. */ | |
8939 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
8940 | ||
8941 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
8942 | lowest addressed bit of the containing object must be. */ | |
5f446d21 DD |
8943 | object_offset_in_bits = deepest_bitpos - type_size_in_bits; |
8944 | ||
8945 | /* Round up to type_align by default. This works best for bitfields. */ | |
8946 | object_offset_in_bits += type_align_in_bits - 1; | |
8947 | object_offset_in_bits /= type_align_in_bits; | |
8948 | object_offset_in_bits *= type_align_in_bits; | |
a3f97cbb | 8949 | |
5f446d21 DD |
8950 | if (object_offset_in_bits > bitpos_int) |
8951 | { | |
8952 | /* Sigh, the decl must be packed. */ | |
8953 | object_offset_in_bits = deepest_bitpos - type_size_in_bits; | |
8954 | ||
8955 | /* Round up to decl_align instead. */ | |
8956 | object_offset_in_bits += decl_align_in_bits - 1; | |
8957 | object_offset_in_bits /= decl_align_in_bits; | |
8958 | object_offset_in_bits *= decl_align_in_bits; | |
8959 | } | |
a3f97cbb | 8960 | |
2ad9852d | 8961 | return object_offset_in_bits / BITS_PER_UNIT; |
a3f97cbb | 8962 | } |
a3f97cbb | 8963 | \f |
71dfc51f RK |
8964 | /* The following routines define various Dwarf attributes and any data |
8965 | associated with them. */ | |
a3f97cbb | 8966 | |
ef76d03b | 8967 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 8968 | |
ef76d03b | 8969 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
8970 | whole parameters. Note that the location attributes for struct fields are |
8971 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 8972 | |
b9203463 | 8973 | static inline void |
7080f735 AJ |
8974 | add_AT_location_description (dw_die_ref die, enum dwarf_attribute attr_kind, |
8975 | dw_loc_descr_ref descr) | |
a3f97cbb | 8976 | { |
e7af1d45 RK |
8977 | if (descr != 0) |
8978 | add_AT_loc (die, attr_kind, descr); | |
a3f97cbb JW |
8979 | } |
8980 | ||
2ad9852d RK |
8981 | /* Attach the specialized form of location attribute used for data members of |
8982 | struct and union types. In the special case of a FIELD_DECL node which | |
8983 | represents a bit-field, the "offset" part of this special location | |
8984 | descriptor must indicate the distance in bytes from the lowest-addressed | |
8985 | byte of the containing struct or union type to the lowest-addressed byte of | |
8986 | the "containing object" for the bit-field. (See the `field_byte_offset' | |
8987 | function above). | |
8988 | ||
8989 | For any given bit-field, the "containing object" is a hypothetical object | |
8990 | (of some integral or enum type) within which the given bit-field lives. The | |
8991 | type of this hypothetical "containing object" is always the same as the | |
8992 | declared type of the individual bit-field itself (for GCC anyway... the | |
8993 | DWARF spec doesn't actually mandate this). Note that it is the size (in | |
8994 | bytes) of the hypothetical "containing object" which will be given in the | |
8995 | DW_AT_byte_size attribute for this bit-field. (See the | |
8996 | `byte_size_attribute' function below.) It is also used when calculating the | |
8997 | value of the DW_AT_bit_offset attribute. (See the `bit_offset_attribute' | |
8998 | function below.) */ | |
71dfc51f | 8999 | |
a3f97cbb | 9000 | static void |
7080f735 | 9001 | add_data_member_location_attribute (dw_die_ref die, tree decl) |
a3f97cbb | 9002 | { |
649ce3f2 JM |
9003 | long offset; |
9004 | dw_loc_descr_ref loc_descr = 0; | |
a3f97cbb | 9005 | |
61b32c02 | 9006 | if (TREE_CODE (decl) == TREE_VEC) |
649ce3f2 JM |
9007 | { |
9008 | /* We're working on the TAG_inheritance for a base class. */ | |
1d3d6b1e | 9009 | if (TREE_VIA_VIRTUAL (decl) && is_cxx ()) |
649ce3f2 JM |
9010 | { |
9011 | /* For C++ virtual bases we can't just use BINFO_OFFSET, as they | |
9012 | aren't at a fixed offset from all (sub)objects of the same | |
9013 | type. We need to extract the appropriate offset from our | |
9014 | vtable. The following dwarf expression means | |
9015 | ||
9016 | BaseAddr = ObAddr + *((*ObAddr) - Offset) | |
9017 | ||
9018 | This is specific to the V3 ABI, of course. */ | |
9019 | ||
9020 | dw_loc_descr_ref tmp; | |
2ad9852d | 9021 | |
649ce3f2 JM |
9022 | /* Make a copy of the object address. */ |
9023 | tmp = new_loc_descr (DW_OP_dup, 0, 0); | |
9024 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 9025 | |
649ce3f2 JM |
9026 | /* Extract the vtable address. */ |
9027 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
9028 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 9029 | |
649ce3f2 JM |
9030 | /* Calculate the address of the offset. */ |
9031 | offset = tree_low_cst (BINFO_VPTR_FIELD (decl), 0); | |
9032 | if (offset >= 0) | |
9033 | abort (); | |
2ad9852d | 9034 | |
649ce3f2 JM |
9035 | tmp = int_loc_descriptor (-offset); |
9036 | add_loc_descr (&loc_descr, tmp); | |
9037 | tmp = new_loc_descr (DW_OP_minus, 0, 0); | |
9038 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 9039 | |
649ce3f2 JM |
9040 | /* Extract the offset. */ |
9041 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
9042 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 9043 | |
649ce3f2 JM |
9044 | /* Add it to the object address. */ |
9045 | tmp = new_loc_descr (DW_OP_plus, 0, 0); | |
9046 | add_loc_descr (&loc_descr, tmp); | |
9047 | } | |
9048 | else | |
9049 | offset = tree_low_cst (BINFO_OFFSET (decl), 0); | |
9050 | } | |
61b32c02 JM |
9051 | else |
9052 | offset = field_byte_offset (decl); | |
9053 | ||
649ce3f2 JM |
9054 | if (! loc_descr) |
9055 | { | |
9056 | enum dwarf_location_atom op; | |
9057 | ||
2ad9852d RK |
9058 | /* The DWARF2 standard says that we should assume that the structure |
9059 | address is already on the stack, so we can specify a structure field | |
9060 | address by using DW_OP_plus_uconst. */ | |
71dfc51f | 9061 | |
a3f97cbb | 9062 | #ifdef MIPS_DEBUGGING_INFO |
2ad9852d RK |
9063 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst |
9064 | operator correctly. It works only if we leave the offset on the | |
9065 | stack. */ | |
649ce3f2 | 9066 | op = DW_OP_constu; |
a3f97cbb | 9067 | #else |
649ce3f2 | 9068 | op = DW_OP_plus_uconst; |
a3f97cbb | 9069 | #endif |
71dfc51f | 9070 | |
649ce3f2 JM |
9071 | loc_descr = new_loc_descr (op, offset, 0); |
9072 | } | |
2ad9852d | 9073 | |
a3f97cbb JW |
9074 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); |
9075 | } | |
9076 | ||
b20b352b | 9077 | /* Attach a DW_AT_const_value attribute for a variable or a parameter which |
a3f97cbb JW |
9078 | does not have a "location" either in memory or in a register. These |
9079 | things can arise in GNU C when a constant is passed as an actual parameter | |
9080 | to an inlined function. They can also arise in C++ where declared | |
9081 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 9082 | |
a3f97cbb | 9083 | static void |
7080f735 | 9084 | add_const_value_attribute (dw_die_ref die, rtx rtl) |
a3f97cbb JW |
9085 | { |
9086 | switch (GET_CODE (rtl)) | |
9087 | { | |
9088 | case CONST_INT: | |
2e4b9b8c RH |
9089 | /* Note that a CONST_INT rtx could represent either an integer |
9090 | or a floating-point constant. A CONST_INT is used whenever | |
9091 | the constant will fit into a single word. In all such | |
9092 | cases, the original mode of the constant value is wiped | |
9093 | out, and the CONST_INT rtx is assigned VOIDmode. */ | |
9094 | { | |
9095 | HOST_WIDE_INT val = INTVAL (rtl); | |
c26fbbca | 9096 | |
2e4b9b8c | 9097 | /* ??? We really should be using HOST_WIDE_INT throughout. */ |
5929a2f0 | 9098 | if (val < 0 && (long) val == val) |
3d7a191f | 9099 | add_AT_int (die, DW_AT_const_value, (long) val); |
5929a2f0 RH |
9100 | else if ((unsigned long) val == (unsigned HOST_WIDE_INT) val) |
9101 | add_AT_unsigned (die, DW_AT_const_value, (unsigned long) val); | |
94784fb9 RK |
9102 | else |
9103 | { | |
e7af1d45 | 9104 | #if HOST_BITS_PER_LONG * 2 == HOST_BITS_PER_WIDE_INT |
94784fb9 RK |
9105 | add_AT_long_long (die, DW_AT_const_value, |
9106 | val >> HOST_BITS_PER_LONG, val); | |
e7af1d45 | 9107 | #else |
94784fb9 | 9108 | abort (); |
e7af1d45 | 9109 | #endif |
94784fb9 | 9110 | } |
2e4b9b8c | 9111 | } |
a3f97cbb JW |
9112 | break; |
9113 | ||
9114 | case CONST_DOUBLE: | |
9115 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
73c68f61 SS |
9116 | floating-point constant. A CONST_DOUBLE is used whenever the |
9117 | constant requires more than one word in order to be adequately | |
9118 | represented. We output CONST_DOUBLEs as blocks. */ | |
469ac993 | 9119 | { |
b3694847 | 9120 | enum machine_mode mode = GET_MODE (rtl); |
469ac993 JM |
9121 | |
9122 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
9123 | { | |
b3694847 | 9124 | unsigned length = GET_MODE_SIZE (mode) / 4; |
703ad42b | 9125 | long *array = ggc_alloc (sizeof (long) * length); |
71dfc51f | 9126 | REAL_VALUE_TYPE rv; |
469ac993 | 9127 | |
71dfc51f | 9128 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
d464f1b8 | 9129 | real_to_target (array, &rv, mode); |
469ac993 | 9130 | |
469ac993 JM |
9131 | add_AT_float (die, DW_AT_const_value, length, array); |
9132 | } | |
9133 | else | |
2e4b9b8c RH |
9134 | { |
9135 | /* ??? We really should be using HOST_WIDE_INT throughout. */ | |
9136 | if (HOST_BITS_PER_LONG != HOST_BITS_PER_WIDE_INT) | |
9137 | abort (); | |
2ad9852d | 9138 | |
2e4b9b8c RH |
9139 | add_AT_long_long (die, DW_AT_const_value, |
9140 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
9141 | } | |
469ac993 | 9142 | } |
a3f97cbb JW |
9143 | break; |
9144 | ||
9145 | case CONST_STRING: | |
9146 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
9147 | break; | |
9148 | ||
9149 | case SYMBOL_REF: | |
9150 | case LABEL_REF: | |
9151 | case CONST: | |
c470afad RK |
9152 | add_AT_addr (die, DW_AT_const_value, rtl); |
9153 | VARRAY_PUSH_RTX (used_rtx_varray, rtl); | |
a3f97cbb JW |
9154 | break; |
9155 | ||
9156 | case PLUS: | |
9157 | /* In cases where an inlined instance of an inline function is passed | |
73c68f61 SS |
9158 | the address of an `auto' variable (which is local to the caller) we |
9159 | can get a situation where the DECL_RTL of the artificial local | |
9160 | variable (for the inlining) which acts as a stand-in for the | |
9161 | corresponding formal parameter (of the inline function) will look | |
9162 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
9163 | exactly a compile-time constant expression, but it isn't the address | |
9164 | of the (artificial) local variable either. Rather, it represents the | |
9165 | *value* which the artificial local variable always has during its | |
9166 | lifetime. We currently have no way to represent such quasi-constant | |
9167 | values in Dwarf, so for now we just punt and generate nothing. */ | |
a3f97cbb JW |
9168 | break; |
9169 | ||
9170 | default: | |
9171 | /* No other kinds of rtx should be possible here. */ | |
9172 | abort (); | |
9173 | } | |
9174 | ||
9175 | } | |
9176 | ||
d8041cc8 | 9177 | static rtx |
7080f735 | 9178 | rtl_for_decl_location (tree decl) |
a3f97cbb | 9179 | { |
b3694847 | 9180 | rtx rtl; |
71dfc51f | 9181 | |
a3f97cbb JW |
9182 | /* Here we have to decide where we are going to say the parameter "lives" |
9183 | (as far as the debugger is concerned). We only have a couple of | |
9184 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 9185 | |
556273e0 | 9186 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 9187 | activation of the function. If optimization is enabled however, this |
556273e0 | 9188 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
a3f97cbb JW |
9189 | that the parameter doesn't really live anywhere (as far as the code |
9190 | generation parts of GCC are concerned) during most of the function's | |
9191 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
9192 | referenced within the function. |
9193 | ||
9194 | We could just generate a location descriptor here for all non-NULL | |
9195 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
9196 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
9197 | where DECL_RTL is NULL or is a pseudo-reg. | |
9198 | ||
9199 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
9200 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
9201 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
9202 | we can be sure that the parameter was passed using the same type as it is | |
9203 | declared to have within the function, and that its DECL_INCOMING_RTL | |
9204 | points us to a place where a value of that type is passed. | |
9205 | ||
9206 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
9207 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
9208 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
9209 | type which is *different* from the type of the parameter itself. Thus, | |
9210 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
9211 | such cases, the debugger would end up (for example) trying to fetch a | |
9212 | `float' from a place which actually contains the first part of a | |
9213 | `double'. That would lead to really incorrect and confusing | |
9214 | output at debug-time. | |
9215 | ||
9216 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
9217 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
9218 | are a couple of exceptions however. On little-endian machines we can | |
9219 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
9220 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
9221 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
9222 | when (on a little-endian machine) a non-prototyped function has a | |
9223 | parameter declared to be of type `short' or `char'. In such cases, | |
9224 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
9225 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
9226 | passed `int' value. If the debugger then uses that address to fetch | |
9227 | a `short' or a `char' (on a little-endian machine) the result will be | |
9228 | the correct data, so we allow for such exceptional cases below. | |
9229 | ||
9230 | Note that our goal here is to describe the place where the given formal | |
2ad9852d RK |
9231 | parameter lives during most of the function's activation (i.e. between the |
9232 | end of the prologue and the start of the epilogue). We'll do that as best | |
9233 | as we can. Note however that if the given formal parameter is modified | |
9234 | sometime during the execution of the function, then a stack backtrace (at | |
9235 | debug-time) will show the function as having been called with the *new* | |
9236 | value rather than the value which was originally passed in. This happens | |
9237 | rarely enough that it is not a major problem, but it *is* a problem, and | |
9238 | I'd like to fix it. | |
9239 | ||
9240 | A future version of dwarf2out.c may generate two additional attributes for | |
9241 | any given DW_TAG_formal_parameter DIE which will describe the "passed | |
9242 | type" and the "passed location" for the given formal parameter in addition | |
9243 | to the attributes we now generate to indicate the "declared type" and the | |
9244 | "active location" for each parameter. This additional set of attributes | |
9245 | could be used by debuggers for stack backtraces. Separately, note that | |
9246 | sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be NULL also. | |
9247 | This happens (for example) for inlined-instances of inline function formal | |
9248 | parameters which are never referenced. This really shouldn't be | |
9249 | happening. All PARM_DECL nodes should get valid non-NULL | |
9250 | DECL_INCOMING_RTL values, but integrate.c doesn't currently generate these | |
9251 | values for inlined instances of inline function parameters, so when we see | |
9252 | such cases, we are just out-of-luck for the time being (until integrate.c | |
a3f97cbb JW |
9253 | gets fixed). */ |
9254 | ||
9255 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
110c3568 | 9256 | rtl = DECL_RTL_IF_SET (decl); |
a3f97cbb | 9257 | |
c28abdf0 | 9258 | /* When generating abstract instances, ignore everything except |
234c071b KB |
9259 | constants, symbols living in memory, and symbols living in |
9260 | fixed registers. */ | |
c28abdf0 RH |
9261 | if (! reload_completed) |
9262 | { | |
9263 | if (rtl | |
9264 | && (CONSTANT_P (rtl) | |
9265 | || (GET_CODE (rtl) == MEM | |
234c071b KB |
9266 | && CONSTANT_P (XEXP (rtl, 0))) |
9267 | || (GET_CODE (rtl) == REG | |
9268 | && TREE_CODE (decl) == VAR_DECL | |
9269 | && TREE_STATIC (decl)))) | |
4c8c0dec | 9270 | { |
69bd9368 | 9271 | rtl = (*targetm.delegitimize_address) (rtl); |
4c8c0dec JJ |
9272 | return rtl; |
9273 | } | |
c28abdf0 RH |
9274 | rtl = NULL_RTX; |
9275 | } | |
9276 | else if (TREE_CODE (decl) == PARM_DECL) | |
a3f97cbb JW |
9277 | { |
9278 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
9279 | { | |
d8041cc8 RH |
9280 | tree declared_type = type_main_variant (TREE_TYPE (decl)); |
9281 | tree passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 9282 | |
71dfc51f | 9283 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb | 9284 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
2ad9852d | 9285 | all cases where (rtl == NULL_RTX) just below. */ |
a3f97cbb | 9286 | if (declared_type == passed_type) |
71dfc51f RK |
9287 | rtl = DECL_INCOMING_RTL (decl); |
9288 | else if (! BYTES_BIG_ENDIAN | |
9289 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
555b6442 HPN |
9290 | && (GET_MODE_SIZE (TYPE_MODE (declared_type)) |
9291 | <= GET_MODE_SIZE (TYPE_MODE (passed_type)))) | |
556273e0 | 9292 | rtl = DECL_INCOMING_RTL (decl); |
a3f97cbb | 9293 | } |
5a904a61 JW |
9294 | |
9295 | /* If the parm was passed in registers, but lives on the stack, then | |
9296 | make a big endian correction if the mode of the type of the | |
9297 | parameter is not the same as the mode of the rtl. */ | |
9298 | /* ??? This is the same series of checks that are made in dbxout.c before | |
9299 | we reach the big endian correction code there. It isn't clear if all | |
9300 | of these checks are necessary here, but keeping them all is the safe | |
9301 | thing to do. */ | |
9302 | else if (GET_CODE (rtl) == MEM | |
9303 | && XEXP (rtl, 0) != const0_rtx | |
9304 | && ! CONSTANT_P (XEXP (rtl, 0)) | |
9305 | /* Not passed in memory. */ | |
9306 | && GET_CODE (DECL_INCOMING_RTL (decl)) != MEM | |
9307 | /* Not passed by invisible reference. */ | |
9308 | && (GET_CODE (XEXP (rtl, 0)) != REG | |
9309 | || REGNO (XEXP (rtl, 0)) == HARD_FRAME_POINTER_REGNUM | |
9310 | || REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM | |
9311 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM | |
9312 | || REGNO (XEXP (rtl, 0)) == ARG_POINTER_REGNUM | |
9313 | #endif | |
9314 | ) | |
9315 | /* Big endian correction check. */ | |
9316 | && BYTES_BIG_ENDIAN | |
9317 | && TYPE_MODE (TREE_TYPE (decl)) != GET_MODE (rtl) | |
9318 | && (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl))) | |
9319 | < UNITS_PER_WORD)) | |
9320 | { | |
9321 | int offset = (UNITS_PER_WORD | |
9322 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl)))); | |
2ad9852d | 9323 | |
5a904a61 JW |
9324 | rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (decl)), |
9325 | plus_constant (XEXP (rtl, 0), offset)); | |
9326 | } | |
a3f97cbb | 9327 | } |
71dfc51f | 9328 | |
d8041cc8 RH |
9329 | if (rtl != NULL_RTX) |
9330 | { | |
9331 | rtl = eliminate_regs (rtl, 0, NULL_RTX); | |
6a7a9f01 | 9332 | #ifdef LEAF_REG_REMAP |
d8041cc8 RH |
9333 | if (current_function_uses_only_leaf_regs) |
9334 | leaf_renumber_regs_insn (rtl); | |
6a7a9f01 | 9335 | #endif |
d8041cc8 RH |
9336 | } |
9337 | ||
2ad9852d RK |
9338 | /* A variable with no DECL_RTL but a DECL_INITIAL is a compile-time constant, |
9339 | and will have been substituted directly into all expressions that use it. | |
9340 | C does not have such a concept, but C++ and other languages do. */ | |
c28abdf0 | 9341 | else if (TREE_CODE (decl) == VAR_DECL && DECL_INITIAL (decl)) |
6d73371a JJ |
9342 | { |
9343 | /* If a variable is initialized with a string constant without embedded | |
9344 | zeros, build CONST_STRING. */ | |
9345 | if (TREE_CODE (DECL_INITIAL (decl)) == STRING_CST | |
9346 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) | |
9347 | { | |
9348 | tree arrtype = TREE_TYPE (decl); | |
9349 | tree enttype = TREE_TYPE (arrtype); | |
9350 | tree domain = TYPE_DOMAIN (arrtype); | |
9351 | tree init = DECL_INITIAL (decl); | |
9352 | enum machine_mode mode = TYPE_MODE (enttype); | |
9353 | ||
9354 | if (GET_MODE_CLASS (mode) == MODE_INT && GET_MODE_SIZE (mode) == 1 | |
9355 | && domain | |
9356 | && integer_zerop (TYPE_MIN_VALUE (domain)) | |
9357 | && compare_tree_int (TYPE_MAX_VALUE (domain), | |
9358 | TREE_STRING_LENGTH (init) - 1) == 0 | |
9359 | && ((size_t) TREE_STRING_LENGTH (init) | |
9360 | == strlen (TREE_STRING_POINTER (init)) + 1)) | |
9361 | rtl = gen_rtx_CONST_STRING (VOIDmode, TREE_STRING_POINTER (init)); | |
9362 | } | |
29b91443 JM |
9363 | /* If the initializer is something that we know will expand into an |
9364 | immediate RTL constant, expand it now. Expanding anything else | |
9365 | tends to produce unresolved symbols; see debug/5770 and c++/6381. */ | |
9366 | else if (TREE_CODE (DECL_INITIAL (decl)) == INTEGER_CST | |
9367 | || TREE_CODE (DECL_INITIAL (decl)) == REAL_CST) | |
6d73371a JJ |
9368 | { |
9369 | rtl = expand_expr (DECL_INITIAL (decl), NULL_RTX, VOIDmode, | |
9370 | EXPAND_INITIALIZER); | |
29b91443 | 9371 | /* If expand_expr returns a MEM, it wasn't immediate. */ |
6d73371a | 9372 | if (rtl && GET_CODE (rtl) == MEM) |
29b91443 | 9373 | abort (); |
6d73371a JJ |
9374 | } |
9375 | } | |
8063ddcf | 9376 | |
4c8c0dec | 9377 | if (rtl) |
69bd9368 | 9378 | rtl = (*targetm.delegitimize_address) (rtl); |
b9203463 RH |
9379 | |
9380 | /* If we don't look past the constant pool, we risk emitting a | |
9381 | reference to a constant pool entry that isn't referenced from | |
9382 | code, and thus is not emitted. */ | |
9383 | if (rtl) | |
9384 | rtl = avoid_constant_pool_reference (rtl); | |
9385 | ||
d8041cc8 RH |
9386 | return rtl; |
9387 | } | |
9388 | ||
b20b352b | 9389 | /* Generate *either* a DW_AT_location attribute or else a DW_AT_const_value |
d8041cc8 RH |
9390 | data attribute for a variable or a parameter. We generate the |
9391 | DW_AT_const_value attribute only in those cases where the given variable | |
9392 | or parameter does not have a true "location" either in memory or in a | |
9393 | register. This can happen (for example) when a constant is passed as an | |
9394 | actual argument in a call to an inline function. (It's possible that | |
9395 | these things can crop up in other ways also.) Note that one type of | |
9396 | constant value which can be passed into an inlined function is a constant | |
9397 | pointer. This can happen for example if an actual argument in an inlined | |
9398 | function call evaluates to a compile-time constant address. */ | |
9399 | ||
9400 | static void | |
7080f735 | 9401 | add_location_or_const_value_attribute (dw_die_ref die, tree decl) |
d8041cc8 | 9402 | { |
b3694847 | 9403 | rtx rtl; |
b9203463 | 9404 | dw_loc_descr_ref descr; |
d8041cc8 RH |
9405 | |
9406 | if (TREE_CODE (decl) == ERROR_MARK) | |
9407 | return; | |
2ad9852d | 9408 | else if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) |
d8041cc8 RH |
9409 | abort (); |
9410 | ||
9411 | rtl = rtl_for_decl_location (decl); | |
a97c9600 RH |
9412 | if (rtl == NULL_RTX) |
9413 | return; | |
6a7a9f01 | 9414 | |
a3f97cbb JW |
9415 | switch (GET_CODE (rtl)) |
9416 | { | |
e9a25f70 | 9417 | case ADDRESSOF: |
b9203463 RH |
9418 | /* The address of a variable that was optimized away; |
9419 | don't emit anything. */ | |
e9a25f70 JL |
9420 | break; |
9421 | ||
a3f97cbb JW |
9422 | case CONST_INT: |
9423 | case CONST_DOUBLE: | |
9424 | case CONST_STRING: | |
9425 | case SYMBOL_REF: | |
9426 | case LABEL_REF: | |
9427 | case CONST: | |
9428 | case PLUS: | |
9429 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
9430 | add_const_value_attribute (die, rtl); | |
9431 | break; | |
9432 | ||
9433 | case MEM: | |
b9203463 RH |
9434 | if (TREE_CODE (decl) == VAR_DECL && DECL_THREAD_LOCAL (decl)) |
9435 | { | |
9436 | /* Need loc_descriptor_from_tree since that's where we know | |
9437 | how to handle TLS variables. Want the object's address | |
9438 | since the top-level DW_AT_location assumes such. See | |
9439 | the confusion in loc_descriptor for reference. */ | |
9440 | descr = loc_descriptor_from_tree (decl, 1); | |
9441 | } | |
9442 | else | |
9443 | { | |
9444 | case REG: | |
9445 | case SUBREG: | |
9446 | case CONCAT: | |
9447 | descr = loc_descriptor (rtl); | |
9448 | } | |
9449 | add_AT_location_description (die, DW_AT_location, descr); | |
a3f97cbb | 9450 | break; |
7080f735 | 9451 | |
a3f97cbb | 9452 | default: |
71dfc51f | 9453 | abort (); |
a3f97cbb JW |
9454 | } |
9455 | } | |
9456 | ||
1bfb5f8f JM |
9457 | /* If we don't have a copy of this variable in memory for some reason (such |
9458 | as a C++ member constant that doesn't have an out-of-line definition), | |
9459 | we should tell the debugger about the constant value. */ | |
9460 | ||
9461 | static void | |
7080f735 | 9462 | tree_add_const_value_attribute (dw_die_ref var_die, tree decl) |
1bfb5f8f JM |
9463 | { |
9464 | tree init = DECL_INITIAL (decl); | |
9465 | tree type = TREE_TYPE (decl); | |
9466 | ||
9467 | if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl) && init | |
9468 | && initializer_constant_valid_p (init, type) == null_pointer_node) | |
9469 | /* OK */; | |
9470 | else | |
9471 | return; | |
9472 | ||
9473 | switch (TREE_CODE (type)) | |
9474 | { | |
9475 | case INTEGER_TYPE: | |
9476 | if (host_integerp (init, 0)) | |
9477 | add_AT_unsigned (var_die, DW_AT_const_value, | |
2ad9852d | 9478 | tree_low_cst (init, 0)); |
1bfb5f8f JM |
9479 | else |
9480 | add_AT_long_long (var_die, DW_AT_const_value, | |
9481 | TREE_INT_CST_HIGH (init), | |
9482 | TREE_INT_CST_LOW (init)); | |
9483 | break; | |
9484 | ||
9485 | default:; | |
9486 | } | |
9487 | } | |
0b34cf1e | 9488 | |
b20b352b | 9489 | /* Generate a DW_AT_name attribute given some string value to be included as |
a3f97cbb | 9490 | the value of the attribute. */ |
71dfc51f | 9491 | |
c4274b22 | 9492 | static void |
7080f735 | 9493 | add_name_attribute (dw_die_ref die, const char *name_string) |
a3f97cbb | 9494 | { |
71dfc51f | 9495 | if (name_string != NULL && *name_string != 0) |
14a774a9 RK |
9496 | { |
9497 | if (demangle_name_func) | |
9498 | name_string = (*demangle_name_func) (name_string); | |
9499 | ||
9500 | add_AT_string (die, DW_AT_name, name_string); | |
9501 | } | |
a3f97cbb JW |
9502 | } |
9503 | ||
b20b352b | 9504 | /* Generate a DW_AT_comp_dir attribute for DIE. */ |
c4274b22 RH |
9505 | |
9506 | static void | |
7080f735 | 9507 | add_comp_dir_attribute (dw_die_ref die) |
c4274b22 | 9508 | { |
b20d9f0c | 9509 | const char *wd = get_src_pwd (); |
c4274b22 RH |
9510 | if (wd != NULL) |
9511 | add_AT_string (die, DW_AT_comp_dir, wd); | |
9512 | } | |
9513 | ||
a3f97cbb | 9514 | /* Given a tree node describing an array bound (either lower or upper) output |
466446b0 | 9515 | a representation for that bound. */ |
71dfc51f | 9516 | |
a3f97cbb | 9517 | static void |
7080f735 | 9518 | add_bound_info (dw_die_ref subrange_die, enum dwarf_attribute bound_attr, tree bound) |
a3f97cbb | 9519 | { |
a3f97cbb JW |
9520 | switch (TREE_CODE (bound)) |
9521 | { | |
9522 | case ERROR_MARK: | |
9523 | return; | |
9524 | ||
3ef42a0c | 9525 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ |
a3f97cbb | 9526 | case INTEGER_CST: |
665f2503 RK |
9527 | if (! host_integerp (bound, 0) |
9528 | || (bound_attr == DW_AT_lower_bound | |
28985b81 | 9529 | && (((is_c_family () || is_java ()) && integer_zerop (bound)) |
665f2503 RK |
9530 | || (is_fortran () && integer_onep (bound))))) |
9531 | /* use the default */ | |
9532 | ; | |
141719a8 | 9533 | else |
665f2503 | 9534 | add_AT_unsigned (subrange_die, bound_attr, tree_low_cst (bound, 0)); |
a3f97cbb JW |
9535 | break; |
9536 | ||
b1ccbc24 | 9537 | case CONVERT_EXPR: |
a3f97cbb | 9538 | case NOP_EXPR: |
b1ccbc24 | 9539 | case NON_LVALUE_EXPR: |
ed239f5a | 9540 | case VIEW_CONVERT_EXPR: |
b1ccbc24 RK |
9541 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); |
9542 | break; | |
556273e0 | 9543 | |
a3f97cbb JW |
9544 | case SAVE_EXPR: |
9545 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
73c68f61 SS |
9546 | access the upper bound values may be bogus. If they refer to a |
9547 | register, they may only describe how to get at these values at the | |
9548 | points in the generated code right after they have just been | |
9549 | computed. Worse yet, in the typical case, the upper bound values | |
9550 | will not even *be* computed in the optimized code (though the | |
9551 | number of elements will), so these SAVE_EXPRs are entirely | |
9552 | bogus. In order to compensate for this fact, we check here to see | |
9553 | if optimization is enabled, and if so, we don't add an attribute | |
9554 | for the (unknown and unknowable) upper bound. This should not | |
9555 | cause too much trouble for existing (stupid?) debuggers because | |
9556 | they have to deal with empty upper bounds location descriptions | |
9557 | anyway in order to be able to deal with incomplete array types. | |
9558 | Of course an intelligent debugger (GDB?) should be able to | |
9559 | comprehend that a missing upper bound specification in an array | |
9560 | type used for a storage class `auto' local array variable | |
9561 | indicates that the upper bound is both unknown (at compile- time) | |
9562 | and unknowable (at run-time) due to optimization. | |
466446b0 JM |
9563 | |
9564 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
9565 | value there unless it was going to be used repeatedly in the | |
9566 | function, i.e. for cleanups. */ | |
1edf43d6 JM |
9567 | if (SAVE_EXPR_RTL (bound) |
9568 | && (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM)) | |
a3f97cbb | 9569 | { |
b3694847 | 9570 | dw_die_ref ctx = lookup_decl_die (current_function_decl); |
54ba1f0d | 9571 | dw_die_ref decl_die = new_die (DW_TAG_variable, ctx, bound); |
b3694847 | 9572 | rtx loc = SAVE_EXPR_RTL (bound); |
f5963e61 JL |
9573 | |
9574 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
9575 | it references an outer function's frame. */ | |
f5963e61 JL |
9576 | if (GET_CODE (loc) == MEM) |
9577 | { | |
9578 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
9579 | ||
9580 | if (XEXP (loc, 0) != new_addr) | |
c5c76735 | 9581 | loc = gen_rtx_MEM (GET_MODE (loc), new_addr); |
f5963e61 JL |
9582 | } |
9583 | ||
466446b0 JM |
9584 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
9585 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
b9203463 RH |
9586 | add_AT_location_description (decl_die, DW_AT_location, |
9587 | loc_descriptor (loc)); | |
466446b0 | 9588 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 9589 | } |
71dfc51f RK |
9590 | |
9591 | /* Else leave out the attribute. */ | |
a3f97cbb | 9592 | break; |
3f76745e | 9593 | |
ef76d03b | 9594 | case VAR_DECL: |
d8041cc8 RH |
9595 | case PARM_DECL: |
9596 | { | |
9597 | dw_die_ref decl_die = lookup_decl_die (bound); | |
9598 | ||
9599 | /* ??? Can this happen, or should the variable have been bound | |
9600 | first? Probably it can, since I imagine that we try to create | |
9601 | the types of parameters in the order in which they exist in | |
0b34cf1e | 9602 | the list, and won't have created a forward reference to a |
d8041cc8 RH |
9603 | later parameter. */ |
9604 | if (decl_die != NULL) | |
9605 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
9606 | break; | |
9607 | } | |
ef76d03b | 9608 | |
3f76745e | 9609 | default: |
d8041cc8 RH |
9610 | { |
9611 | /* Otherwise try to create a stack operation procedure to | |
9612 | evaluate the value of the array bound. */ | |
9613 | ||
9614 | dw_die_ref ctx, decl_die; | |
9615 | dw_loc_descr_ref loc; | |
9616 | ||
9617 | loc = loc_descriptor_from_tree (bound, 0); | |
9618 | if (loc == NULL) | |
9619 | break; | |
9620 | ||
e7af1d45 RK |
9621 | if (current_function_decl == 0) |
9622 | ctx = comp_unit_die; | |
9623 | else | |
9624 | ctx = lookup_decl_die (current_function_decl); | |
d8041cc8 | 9625 | |
aea9695c RK |
9626 | /* If we weren't able to find a context, it's most likely the case |
9627 | that we are processing the return type of the function. So | |
9628 | make a SAVE_EXPR to point to it and have the limbo DIE code | |
9629 | find the proper die. The save_expr function doesn't always | |
9630 | make a SAVE_EXPR, so do it ourselves. */ | |
9631 | if (ctx == 0) | |
9632 | bound = build (SAVE_EXPR, TREE_TYPE (bound), bound, | |
9633 | current_function_decl, NULL_TREE); | |
9634 | ||
54ba1f0d | 9635 | decl_die = new_die (DW_TAG_variable, ctx, bound); |
d8041cc8 RH |
9636 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
9637 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
9638 | add_AT_loc (decl_die, DW_AT_location, loc); | |
9639 | ||
9640 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
9641 | break; | |
9642 | } | |
a3f97cbb JW |
9643 | } |
9644 | } | |
9645 | ||
9646 | /* Note that the block of subscript information for an array type also | |
9647 | includes information about the element type of type given array type. */ | |
71dfc51f | 9648 | |
a3f97cbb | 9649 | static void |
7080f735 | 9650 | add_subscript_info (dw_die_ref type_die, tree type) |
a3f97cbb | 9651 | { |
081f5e7e | 9652 | #ifndef MIPS_DEBUGGING_INFO |
b3694847 | 9653 | unsigned dimension_number; |
081f5e7e | 9654 | #endif |
b3694847 SS |
9655 | tree lower, upper; |
9656 | dw_die_ref subrange_die; | |
a3f97cbb | 9657 | |
556273e0 | 9658 | /* The GNU compilers represent multidimensional array types as sequences of |
a3f97cbb JW |
9659 | one dimensional array types whose element types are themselves array |
9660 | types. Here we squish that down, so that each multidimensional array | |
556273e0 | 9661 | type gets only one array_type DIE in the Dwarf debugging info. The draft |
a3f97cbb JW |
9662 | Dwarf specification say that we are allowed to do this kind of |
9663 | compression in C (because there is no difference between an array or | |
556273e0 | 9664 | arrays and a multidimensional array in C) but for other source languages |
a3f97cbb | 9665 | (e.g. Ada) we probably shouldn't do this. */ |
71dfc51f | 9666 | |
a3f97cbb JW |
9667 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
9668 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
9669 | We work around this by disabling this feature. See also | |
9670 | gen_array_type_die. */ | |
9671 | #ifndef MIPS_DEBUGGING_INFO | |
9672 | for (dimension_number = 0; | |
9673 | TREE_CODE (type) == ARRAY_TYPE; | |
9674 | type = TREE_TYPE (type), dimension_number++) | |
a3f97cbb | 9675 | #endif |
2ad9852d | 9676 | { |
b3694847 | 9677 | tree domain = TYPE_DOMAIN (type); |
a3f97cbb JW |
9678 | |
9679 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
556273e0 | 9680 | and (in GNU C only) variable bounds. Handle all three forms |
73c68f61 | 9681 | here. */ |
54ba1f0d | 9682 | subrange_die = new_die (DW_TAG_subrange_type, type_die, NULL); |
a3f97cbb JW |
9683 | if (domain) |
9684 | { | |
9685 | /* We have an array type with specified bounds. */ | |
9686 | lower = TYPE_MIN_VALUE (domain); | |
9687 | upper = TYPE_MAX_VALUE (domain); | |
9688 | ||
beb235f8 | 9689 | /* Define the index type. */ |
a9d38797 | 9690 | if (TREE_TYPE (domain)) |
ef76d03b JW |
9691 | { |
9692 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
9693 | TREE_TYPE field. We can't emit debug info for this | |
9694 | because it is an unnamed integral type. */ | |
9695 | if (TREE_CODE (domain) == INTEGER_TYPE | |
9696 | && TYPE_NAME (domain) == NULL_TREE | |
9697 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
9698 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
556273e0 | 9699 | ; |
ef76d03b JW |
9700 | else |
9701 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
9702 | type_die); | |
9703 | } | |
a9d38797 | 9704 | |
e1ee5cdc RH |
9705 | /* ??? If upper is NULL, the array has unspecified length, |
9706 | but it does have a lower bound. This happens with Fortran | |
9707 | dimension arr(N:*) | |
7080f735 | 9708 | Since the debugger is definitely going to need to know N |
e1ee5cdc RH |
9709 | to produce useful results, go ahead and output the lower |
9710 | bound solo, and hope the debugger can cope. */ | |
9711 | ||
141719a8 | 9712 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
9713 | if (upper) |
9714 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb | 9715 | } |
71dfc51f | 9716 | |
2ad9852d RK |
9717 | /* Otherwise we have an array type with an unspecified length. The |
9718 | DWARF-2 spec does not say how to handle this; let's just leave out the | |
9719 | bounds. */ | |
a3f97cbb | 9720 | } |
a3f97cbb JW |
9721 | } |
9722 | ||
9723 | static void | |
7080f735 | 9724 | add_byte_size_attribute (dw_die_ref die, tree tree_node) |
a3f97cbb | 9725 | { |
b3694847 | 9726 | unsigned size; |
a3f97cbb JW |
9727 | |
9728 | switch (TREE_CODE (tree_node)) | |
9729 | { | |
9730 | case ERROR_MARK: | |
9731 | size = 0; | |
9732 | break; | |
9733 | case ENUMERAL_TYPE: | |
9734 | case RECORD_TYPE: | |
9735 | case UNION_TYPE: | |
9736 | case QUAL_UNION_TYPE: | |
9737 | size = int_size_in_bytes (tree_node); | |
9738 | break; | |
9739 | case FIELD_DECL: | |
9740 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
73c68f61 SS |
9741 | generally given as the number of bytes normally allocated for an |
9742 | object of the *declared* type of the member itself. This is true | |
9743 | even for bit-fields. */ | |
a3f97cbb JW |
9744 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; |
9745 | break; | |
9746 | default: | |
9747 | abort (); | |
9748 | } | |
9749 | ||
9750 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
9751 | indicates that the byte size of the entity in question is variable. We | |
9752 | have no good way of expressing this fact in Dwarf at the present time, | |
9753 | so just let the -1 pass on through. */ | |
a3f97cbb JW |
9754 | add_AT_unsigned (die, DW_AT_byte_size, size); |
9755 | } | |
9756 | ||
9757 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
9758 | which specifies the distance in bits from the highest order bit of the | |
9759 | "containing object" for the bit-field to the highest order bit of the | |
9760 | bit-field itself. | |
9761 | ||
2ad9852d RK |
9762 | For any given bit-field, the "containing object" is a hypothetical object |
9763 | (of some integral or enum type) within which the given bit-field lives. The | |
9764 | type of this hypothetical "containing object" is always the same as the | |
9765 | declared type of the individual bit-field itself. The determination of the | |
9766 | exact location of the "containing object" for a bit-field is rather | |
9767 | complicated. It's handled by the `field_byte_offset' function (above). | |
a3f97cbb JW |
9768 | |
9769 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
9770 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
9771 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
9772 | |
9773 | static inline void | |
7080f735 | 9774 | add_bit_offset_attribute (dw_die_ref die, tree decl) |
a3f97cbb | 9775 | { |
665f2503 RK |
9776 | HOST_WIDE_INT object_offset_in_bytes = field_byte_offset (decl); |
9777 | tree type = DECL_BIT_FIELD_TYPE (decl); | |
9778 | HOST_WIDE_INT bitpos_int; | |
9779 | HOST_WIDE_INT highest_order_object_bit_offset; | |
9780 | HOST_WIDE_INT highest_order_field_bit_offset; | |
9781 | HOST_WIDE_INT unsigned bit_offset; | |
a3f97cbb | 9782 | |
3a88cbd1 JL |
9783 | /* Must be a field and a bit field. */ |
9784 | if (!type | |
9785 | || TREE_CODE (decl) != FIELD_DECL) | |
9786 | abort (); | |
a3f97cbb JW |
9787 | |
9788 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
9789 | encounter such things, just return without generating any attribute | |
665f2503 RK |
9790 | whatsoever. Likewise for variable or too large size. */ |
9791 | if (! host_integerp (bit_position (decl), 0) | |
9792 | || ! host_integerp (DECL_SIZE (decl), 1)) | |
71dfc51f RK |
9793 | return; |
9794 | ||
665f2503 | 9795 | bitpos_int = int_bit_position (decl); |
a3f97cbb JW |
9796 | |
9797 | /* Note that the bit offset is always the distance (in bits) from the | |
556273e0 KH |
9798 | highest-order bit of the "containing object" to the highest-order bit of |
9799 | the bit-field itself. Since the "high-order end" of any object or field | |
a3f97cbb JW |
9800 | is different on big-endian and little-endian machines, the computation |
9801 | below must take account of these differences. */ | |
9802 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
9803 | highest_order_field_bit_offset = bitpos_int; | |
9804 | ||
71dfc51f | 9805 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb | 9806 | { |
665f2503 | 9807 | highest_order_field_bit_offset += tree_low_cst (DECL_SIZE (decl), 0); |
a3f97cbb JW |
9808 | highest_order_object_bit_offset += simple_type_size_in_bits (type); |
9809 | } | |
71dfc51f RK |
9810 | |
9811 | bit_offset | |
9812 | = (! BYTES_BIG_ENDIAN | |
9813 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
9814 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
9815 | |
9816 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
9817 | } | |
9818 | ||
9819 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
9820 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
9821 | |
9822 | static inline void | |
7080f735 | 9823 | add_bit_size_attribute (dw_die_ref die, tree decl) |
a3f97cbb | 9824 | { |
3a88cbd1 JL |
9825 | /* Must be a field and a bit field. */ |
9826 | if (TREE_CODE (decl) != FIELD_DECL | |
9827 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
9828 | abort (); | |
665f2503 RK |
9829 | |
9830 | if (host_integerp (DECL_SIZE (decl), 1)) | |
9831 | add_AT_unsigned (die, DW_AT_bit_size, tree_low_cst (DECL_SIZE (decl), 1)); | |
a3f97cbb JW |
9832 | } |
9833 | ||
88dad228 | 9834 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 9835 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
9836 | |
9837 | static inline void | |
7080f735 | 9838 | add_prototyped_attribute (dw_die_ref die, tree func_type) |
a3f97cbb | 9839 | { |
88dad228 JM |
9840 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
9841 | && TYPE_ARG_TYPES (func_type) != NULL) | |
9842 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
9843 | } |
9844 | ||
a3f97cbb JW |
9845 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found |
9846 | by looking in either the type declaration or object declaration | |
9847 | equate table. */ | |
71dfc51f RK |
9848 | |
9849 | static inline void | |
7080f735 | 9850 | add_abstract_origin_attribute (dw_die_ref die, tree origin) |
a3f97cbb JW |
9851 | { |
9852 | dw_die_ref origin_die = NULL; | |
bbc6ae08 | 9853 | |
d10b8e05 | 9854 | if (TREE_CODE (origin) != FUNCTION_DECL) |
e40a1c67 JM |
9855 | { |
9856 | /* We may have gotten separated from the block for the inlined | |
9857 | function, if we're in an exception handler or some such; make | |
9858 | sure that the abstract function has been written out. | |
9859 | ||
73c68f61 | 9860 | Doing this for nested functions is wrong, however; functions are |
e40a1c67 | 9861 | distinct units, and our context might not even be inline. */ |
fb13d4d0 | 9862 | tree fn = origin; |
2ad9852d | 9863 | |
fb13d4d0 JM |
9864 | if (TYPE_P (fn)) |
9865 | fn = TYPE_STUB_DECL (fn); | |
2ad9852d | 9866 | |
fb13d4d0 | 9867 | fn = decl_function_context (fn); |
e40a1c67 | 9868 | if (fn) |
1edf43d6 | 9869 | dwarf2out_abstract_function (fn); |
e40a1c67 | 9870 | } |
44db1d9c | 9871 | |
2f939d94 | 9872 | if (DECL_P (origin)) |
71dfc51f | 9873 | origin_die = lookup_decl_die (origin); |
2f939d94 | 9874 | else if (TYPE_P (origin)) |
71dfc51f RK |
9875 | origin_die = lookup_type_die (origin); |
9876 | ||
bbc6ae08 | 9877 | if (origin_die == NULL) |
1ae8994f | 9878 | abort (); |
556273e0 | 9879 | |
a3f97cbb JW |
9880 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
9881 | } | |
9882 | ||
bdb669cb JM |
9883 | /* We do not currently support the pure_virtual attribute. */ |
9884 | ||
71dfc51f | 9885 | static inline void |
7080f735 | 9886 | add_pure_or_virtual_attribute (dw_die_ref die, tree func_decl) |
a3f97cbb | 9887 | { |
a94dbf2c | 9888 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 9889 | { |
bdb669cb | 9890 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
665f2503 RK |
9891 | |
9892 | if (host_integerp (DECL_VINDEX (func_decl), 0)) | |
9893 | add_AT_loc (die, DW_AT_vtable_elem_location, | |
9894 | new_loc_descr (DW_OP_constu, | |
9895 | tree_low_cst (DECL_VINDEX (func_decl), 0), | |
9896 | 0)); | |
71dfc51f | 9897 | |
a94dbf2c JM |
9898 | /* GNU extension: Record what type this method came from originally. */ |
9899 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
9900 | add_AT_die_ref (die, DW_AT_containing_type, | |
9901 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
9902 | } |
9903 | } | |
9904 | \f | |
b2932ae5 | 9905 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 9906 | |
b2932ae5 | 9907 | static void |
7080f735 | 9908 | add_src_coords_attributes (dw_die_ref die, tree decl) |
b2932ae5 | 9909 | { |
f31686a3 | 9910 | unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); |
71dfc51f | 9911 | |
b2932ae5 | 9912 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
f31686a3 | 9913 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); |
b2932ae5 JM |
9914 | } |
9915 | ||
b20b352b | 9916 | /* Add a DW_AT_name attribute and source coordinate attribute for the |
a3f97cbb | 9917 | given decl, but only if it actually has a name. */ |
71dfc51f | 9918 | |
a3f97cbb | 9919 | static void |
7080f735 | 9920 | add_name_and_src_coords_attributes (dw_die_ref die, tree decl) |
a3f97cbb | 9921 | { |
b3694847 | 9922 | tree decl_name; |
71dfc51f | 9923 | |
556273e0 | 9924 | decl_name = DECL_NAME (decl); |
71dfc51f | 9925 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 9926 | { |
a1d7ffe3 | 9927 | add_name_attribute (die, dwarf2_name (decl, 0)); |
a96c67ec JM |
9928 | if (! DECL_ARTIFICIAL (decl)) |
9929 | add_src_coords_attributes (die, decl); | |
e689ae67 | 9930 | |
a1d7ffe3 | 9931 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
bc808e0b | 9932 | && TREE_PUBLIC (decl) |
5daf7c0a JM |
9933 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl) |
9934 | && !DECL_ABSTRACT (decl)) | |
a1d7ffe3 JM |
9935 | add_AT_string (die, DW_AT_MIPS_linkage_name, |
9936 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb | 9937 | } |
7a0c8d71 DR |
9938 | |
9939 | #ifdef VMS_DEBUGGING_INFO | |
7a0c8d71 DR |
9940 | /* Get the function's name, as described by its RTL. This may be different |
9941 | from the DECL_NAME name used in the source file. */ | |
9942 | if (TREE_CODE (decl) == FUNCTION_DECL && TREE_ASM_WRITTEN (decl)) | |
c470afad RK |
9943 | { |
9944 | add_AT_addr (die, DW_AT_VMS_rtnbeg_pd_address, | |
9945 | XEXP (DECL_RTL (decl), 0)); | |
9946 | VARRAY_PUSH_RTX (used_rtx_varray, XEXP (DECL_RTL (decl), 0)); | |
9947 | } | |
7a0c8d71 | 9948 | #endif |
a3f97cbb JW |
9949 | } |
9950 | ||
556273e0 | 9951 | /* Push a new declaration scope. */ |
71dfc51f | 9952 | |
a3f97cbb | 9953 | static void |
7080f735 | 9954 | push_decl_scope (tree scope) |
a3f97cbb | 9955 | { |
244a4af0 | 9956 | VARRAY_PUSH_TREE (decl_scope_table, scope); |
a3f97cbb JW |
9957 | } |
9958 | ||
777ad4c2 | 9959 | /* Pop a declaration scope. */ |
2ad9852d | 9960 | |
777ad4c2 | 9961 | static inline void |
7080f735 | 9962 | pop_decl_scope (void) |
777ad4c2 | 9963 | { |
244a4af0 | 9964 | if (VARRAY_ACTIVE_SIZE (decl_scope_table) <= 0) |
777ad4c2 | 9965 | abort (); |
2ad9852d | 9966 | |
244a4af0 | 9967 | VARRAY_POP (decl_scope_table); |
777ad4c2 JM |
9968 | } |
9969 | ||
9970 | /* Return the DIE for the scope that immediately contains this type. | |
9971 | Non-named types get global scope. Named types nested in other | |
9972 | types get their containing scope if it's open, or global scope | |
9973 | otherwise. All other types (i.e. function-local named types) get | |
9974 | the current active scope. */ | |
71dfc51f | 9975 | |
a3f97cbb | 9976 | static dw_die_ref |
7080f735 | 9977 | scope_die_for (tree t, dw_die_ref context_die) |
a3f97cbb | 9978 | { |
b3694847 SS |
9979 | dw_die_ref scope_die = NULL; |
9980 | tree containing_scope; | |
9981 | int i; | |
a3f97cbb | 9982 | |
777ad4c2 JM |
9983 | /* Non-types always go in the current scope. */ |
9984 | if (! TYPE_P (t)) | |
9985 | abort (); | |
9986 | ||
9987 | containing_scope = TYPE_CONTEXT (t); | |
ab72d377 | 9988 | |
2addbe1d JM |
9989 | /* Ignore namespaces for the moment. */ |
9990 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
9991 | containing_scope = NULL_TREE; | |
9992 | ||
5f2f160c JM |
9993 | /* Ignore function type "scopes" from the C frontend. They mean that |
9994 | a tagged type is local to a parmlist of a function declarator, but | |
9995 | that isn't useful to DWARF. */ | |
9996 | if (containing_scope && TREE_CODE (containing_scope) == FUNCTION_TYPE) | |
9997 | containing_scope = NULL_TREE; | |
9998 | ||
71dfc51f RK |
9999 | if (containing_scope == NULL_TREE) |
10000 | scope_die = comp_unit_die; | |
777ad4c2 | 10001 | else if (TYPE_P (containing_scope)) |
348bb3c7 | 10002 | { |
777ad4c2 JM |
10003 | /* For types, we can just look up the appropriate DIE. But |
10004 | first we check to see if we're in the middle of emitting it | |
10005 | so we know where the new DIE should go. */ | |
244a4af0 TF |
10006 | for (i = VARRAY_ACTIVE_SIZE (decl_scope_table) - 1; i >= 0; --i) |
10007 | if (VARRAY_TREE (decl_scope_table, i) == containing_scope) | |
348bb3c7 JM |
10008 | break; |
10009 | ||
10010 | if (i < 0) | |
10011 | { | |
348bb3c7 JM |
10012 | if (debug_info_level > DINFO_LEVEL_TERSE |
10013 | && !TREE_ASM_WRITTEN (containing_scope)) | |
10014 | abort (); | |
10015 | ||
10016 | /* If none of the current dies are suitable, we get file scope. */ | |
10017 | scope_die = comp_unit_die; | |
10018 | } | |
10019 | else | |
777ad4c2 | 10020 | scope_die = lookup_type_die (containing_scope); |
348bb3c7 | 10021 | } |
a3f97cbb | 10022 | else |
777ad4c2 | 10023 | scope_die = context_die; |
71dfc51f | 10024 | |
a3f97cbb JW |
10025 | return scope_die; |
10026 | } | |
10027 | ||
2ad9852d | 10028 | /* Returns nonzero if CONTEXT_DIE is internal to a function. */ |
777ad4c2 JM |
10029 | |
10030 | static inline int | |
7080f735 | 10031 | local_scope_p (dw_die_ref context_die) |
a3f97cbb | 10032 | { |
777ad4c2 JM |
10033 | for (; context_die; context_die = context_die->die_parent) |
10034 | if (context_die->die_tag == DW_TAG_inlined_subroutine | |
10035 | || context_die->die_tag == DW_TAG_subprogram) | |
10036 | return 1; | |
2ad9852d | 10037 | |
777ad4c2 | 10038 | return 0; |
a3f97cbb JW |
10039 | } |
10040 | ||
2ad9852d | 10041 | /* Returns nonzero if CONTEXT_DIE is a class. */ |
9765e357 JM |
10042 | |
10043 | static inline int | |
7080f735 | 10044 | class_scope_p (dw_die_ref context_die) |
9765e357 JM |
10045 | { |
10046 | return (context_die | |
10047 | && (context_die->die_tag == DW_TAG_structure_type | |
10048 | || context_die->die_tag == DW_TAG_union_type)); | |
10049 | } | |
10050 | ||
a3f97cbb JW |
10051 | /* Many forms of DIEs require a "type description" attribute. This |
10052 | routine locates the proper "type descriptor" die for the type given | |
b20b352b | 10053 | by 'type', and adds a DW_AT_type attribute below the given die. */ |
71dfc51f | 10054 | |
a3f97cbb | 10055 | static void |
7080f735 AJ |
10056 | add_type_attribute (dw_die_ref object_die, tree type, int decl_const, |
10057 | int decl_volatile, dw_die_ref context_die) | |
a3f97cbb | 10058 | { |
b3694847 SS |
10059 | enum tree_code code = TREE_CODE (type); |
10060 | dw_die_ref type_die = NULL; | |
a3f97cbb | 10061 | |
ef76d03b JW |
10062 | /* ??? If this type is an unnamed subrange type of an integral or |
10063 | floating-point type, use the inner type. This is because we have no | |
10064 | support for unnamed types in base_type_die. This can happen if this is | |
10065 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
10066 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
10067 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
10068 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
10069 | ||
2ad9852d RK |
10070 | if (code == ERROR_MARK |
10071 | /* Handle a special case. For functions whose return type is void, we | |
10072 | generate *no* type attribute. (Note that no object may have type | |
10073 | `void', so this only applies to function return types). */ | |
10074 | || code == VOID_TYPE) | |
b1ccbc24 | 10075 | return; |
a3f97cbb | 10076 | |
a3f97cbb JW |
10077 | type_die = modified_type_die (type, |
10078 | decl_const || TYPE_READONLY (type), | |
10079 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 10080 | context_die); |
2ad9852d | 10081 | |
a3f97cbb | 10082 | if (type_die != NULL) |
71dfc51f | 10083 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
10084 | } |
10085 | ||
10086 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
10087 | a pointer to the (string) tag name for the given type, or zero if the type | |
10088 | was declared without a tag. */ | |
71dfc51f | 10089 | |
d3e3972c | 10090 | static const char * |
7080f735 | 10091 | type_tag (tree type) |
a3f97cbb | 10092 | { |
b3694847 | 10093 | const char *name = 0; |
a3f97cbb JW |
10094 | |
10095 | if (TYPE_NAME (type) != 0) | |
10096 | { | |
b3694847 | 10097 | tree t = 0; |
a3f97cbb JW |
10098 | |
10099 | /* Find the IDENTIFIER_NODE for the type name. */ | |
10100 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
10101 | t = TYPE_NAME (type); | |
bdb669cb | 10102 | |
556273e0 | 10103 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
73c68f61 SS |
10104 | a TYPE_DECL node, regardless of whether or not a `typedef' was |
10105 | involved. */ | |
a94dbf2c JM |
10106 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
10107 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 10108 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 10109 | |
a3f97cbb JW |
10110 | /* Now get the name as a string, or invent one. */ |
10111 | if (t != 0) | |
a94dbf2c | 10112 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 10113 | } |
71dfc51f | 10114 | |
a3f97cbb JW |
10115 | return (name == 0 || *name == '\0') ? 0 : name; |
10116 | } | |
10117 | ||
10118 | /* Return the type associated with a data member, make a special check | |
10119 | for bit field types. */ | |
71dfc51f RK |
10120 | |
10121 | static inline tree | |
7080f735 | 10122 | member_declared_type (tree member) |
a3f97cbb | 10123 | { |
71dfc51f | 10124 | return (DECL_BIT_FIELD_TYPE (member) |
2ad9852d | 10125 | ? DECL_BIT_FIELD_TYPE (member) : TREE_TYPE (member)); |
a3f97cbb JW |
10126 | } |
10127 | ||
d291dd49 | 10128 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 10129 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 10130 | |
487a6e06 | 10131 | #if 0 |
d3e3972c | 10132 | static const char * |
7080f735 | 10133 | decl_start_label (tree decl) |
a3f97cbb JW |
10134 | { |
10135 | rtx x; | |
d3e3972c | 10136 | const char *fnname; |
2ad9852d | 10137 | |
a3f97cbb JW |
10138 | x = DECL_RTL (decl); |
10139 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
10140 | abort (); |
10141 | ||
a3f97cbb JW |
10142 | x = XEXP (x, 0); |
10143 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
10144 | abort (); |
10145 | ||
a3f97cbb JW |
10146 | fnname = XSTR (x, 0); |
10147 | return fnname; | |
10148 | } | |
487a6e06 | 10149 | #endif |
a3f97cbb | 10150 | \f |
956d6950 | 10151 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 10152 | the compilation unit. Debugging information is collected by walking |
88dad228 | 10153 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
10154 | |
10155 | static void | |
7080f735 | 10156 | gen_array_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 10157 | { |
b3694847 SS |
10158 | dw_die_ref scope_die = scope_die_for (type, context_die); |
10159 | dw_die_ref array_die; | |
10160 | tree element_type; | |
bdb669cb | 10161 | |
a9d38797 JM |
10162 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
10163 | the inner array type comes before the outer array type. Thus we must | |
10164 | call gen_type_die before we call new_die. See below also. */ | |
10165 | #ifdef MIPS_DEBUGGING_INFO | |
10166 | gen_type_die (TREE_TYPE (type), context_die); | |
10167 | #endif | |
10168 | ||
54ba1f0d | 10169 | array_die = new_die (DW_TAG_array_type, scope_die, type); |
84f0ace0 JM |
10170 | add_name_attribute (array_die, type_tag (type)); |
10171 | equate_type_number_to_die (type, array_die); | |
10172 | ||
10173 | if (TREE_CODE (type) == VECTOR_TYPE) | |
10174 | { | |
10175 | /* The frontend feeds us a representation for the vector as a struct | |
10176 | containing an array. Pull out the array type. */ | |
10177 | type = TREE_TYPE (TYPE_FIELDS (TYPE_DEBUG_REPRESENTATION_TYPE (type))); | |
10178 | add_AT_flag (array_die, DW_AT_GNU_vector, 1); | |
10179 | } | |
a9d38797 | 10180 | |
a3f97cbb JW |
10181 | #if 0 |
10182 | /* We default the array ordering. SDB will probably do | |
10183 | the right things even if DW_AT_ordering is not present. It's not even | |
10184 | an issue until we start to get into multidimensional arrays anyway. If | |
10185 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
10186 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
10187 | and when we find out that we need to put these in, we will only do so | |
10188 | for multidimensional arrays. */ | |
10189 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
10190 | #endif | |
10191 | ||
a9d38797 | 10192 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
10193 | /* The SGI compilers handle arrays of unknown bound by setting |
10194 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
10195 | if (! TYPE_DOMAIN (type)) |
10196 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
10197 | else | |
10198 | #endif | |
10199 | add_subscript_info (array_die, type); | |
a3f97cbb | 10200 | |
a3f97cbb JW |
10201 | /* Add representation of the type of the elements of this array type. */ |
10202 | element_type = TREE_TYPE (type); | |
71dfc51f | 10203 | |
a3f97cbb JW |
10204 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
10205 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
10206 | We work around this by disabling this feature. See also | |
10207 | add_subscript_info. */ | |
10208 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
10209 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
10210 | element_type = TREE_TYPE (element_type); | |
10211 | ||
a3f97cbb | 10212 | gen_type_die (element_type, context_die); |
a9d38797 | 10213 | #endif |
a3f97cbb JW |
10214 | |
10215 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
10216 | } | |
10217 | ||
10218 | static void | |
7080f735 | 10219 | gen_set_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 10220 | { |
b3694847 | 10221 | dw_die_ref type_die |
54ba1f0d | 10222 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die), type); |
71dfc51f | 10223 | |
a3f97cbb | 10224 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
10225 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
10226 | } | |
10227 | ||
d6f4ec51 | 10228 | #if 0 |
a3f97cbb | 10229 | static void |
7080f735 | 10230 | gen_entry_point_die (tree decl, dw_die_ref context_die) |
a3f97cbb | 10231 | { |
b3694847 | 10232 | tree origin = decl_ultimate_origin (decl); |
54ba1f0d | 10233 | dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die, decl); |
2ad9852d | 10234 | |
a3f97cbb | 10235 | if (origin != NULL) |
71dfc51f | 10236 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
10237 | else |
10238 | { | |
10239 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
10240 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
10241 | 0, 0, context_die); | |
10242 | } | |
71dfc51f | 10243 | |
a3f97cbb | 10244 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 10245 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 10246 | else |
71dfc51f | 10247 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 10248 | } |
d6f4ec51 | 10249 | #endif |
a3f97cbb | 10250 | |
8a8c3656 JM |
10251 | /* Walk through the list of incomplete types again, trying once more to |
10252 | emit full debugging info for them. */ | |
10253 | ||
10254 | static void | |
7080f735 | 10255 | retry_incomplete_types (void) |
8a8c3656 | 10256 | { |
244a4af0 | 10257 | int i; |
2ad9852d | 10258 | |
244a4af0 | 10259 | for (i = VARRAY_ACTIVE_SIZE (incomplete_types) - 1; i >= 0; i--) |
2ad9852d | 10260 | gen_type_die (VARRAY_TREE (incomplete_types, i), comp_unit_die); |
8a8c3656 JM |
10261 | } |
10262 | ||
a3f97cbb | 10263 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 10264 | |
a3f97cbb | 10265 | static void |
7080f735 | 10266 | gen_inlined_enumeration_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 10267 | { |
54ba1f0d | 10268 | dw_die_ref type_die = new_die (DW_TAG_enumeration_type, context_die, type); |
2ad9852d | 10269 | |
bbc6ae08 NC |
10270 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
10271 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
10272 | add_abstract_origin_attribute (type_die, type); |
10273 | } | |
10274 | ||
10275 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 10276 | |
a3f97cbb | 10277 | static void |
7080f735 | 10278 | gen_inlined_structure_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 10279 | { |
54ba1f0d | 10280 | dw_die_ref type_die = new_die (DW_TAG_structure_type, context_die, type); |
777ad4c2 | 10281 | |
bbc6ae08 NC |
10282 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
10283 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
10284 | add_abstract_origin_attribute (type_die, type); |
10285 | } | |
10286 | ||
10287 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 10288 | |
a3f97cbb | 10289 | static void |
7080f735 | 10290 | gen_inlined_union_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 10291 | { |
54ba1f0d | 10292 | dw_die_ref type_die = new_die (DW_TAG_union_type, context_die, type); |
777ad4c2 | 10293 | |
bbc6ae08 NC |
10294 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
10295 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
10296 | add_abstract_origin_attribute (type_die, type); |
10297 | } | |
10298 | ||
10299 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
10300 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
10301 | enumerated type name/value is listed as a child of the enumerated type |
10302 | DIE. */ | |
71dfc51f | 10303 | |
a3f97cbb | 10304 | static void |
7080f735 | 10305 | gen_enumeration_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 10306 | { |
b3694847 | 10307 | dw_die_ref type_die = lookup_type_die (type); |
273dbe67 | 10308 | |
a3f97cbb JW |
10309 | if (type_die == NULL) |
10310 | { | |
10311 | type_die = new_die (DW_TAG_enumeration_type, | |
54ba1f0d | 10312 | scope_die_for (type, context_die), type); |
a3f97cbb JW |
10313 | equate_type_number_to_die (type, type_die); |
10314 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 10315 | } |
273dbe67 JM |
10316 | else if (! TYPE_SIZE (type)) |
10317 | return; | |
10318 | else | |
10319 | remove_AT (type_die, DW_AT_declaration); | |
10320 | ||
10321 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
10322 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
10323 | attribute or the DW_AT_element_list attribute. */ | |
10324 | if (TYPE_SIZE (type)) | |
a3f97cbb | 10325 | { |
b3694847 | 10326 | tree link; |
71dfc51f | 10327 | |
a082c85a | 10328 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 10329 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 10330 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 10331 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 10332 | |
ef76d03b JW |
10333 | /* If the first reference to this type was as the return type of an |
10334 | inline function, then it may not have a parent. Fix this now. */ | |
10335 | if (type_die->die_parent == NULL) | |
10336 | add_child_die (scope_die_for (type, context_die), type_die); | |
10337 | ||
273dbe67 JM |
10338 | for (link = TYPE_FIELDS (type); |
10339 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 10340 | { |
54ba1f0d | 10341 | dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die, link); |
71dfc51f | 10342 | |
273dbe67 JM |
10343 | add_name_attribute (enum_die, |
10344 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
665f2503 | 10345 | |
35dc2bd8 MM |
10346 | if (host_integerp (TREE_VALUE (link), |
10347 | TREE_UNSIGNED (TREE_TYPE (TREE_VALUE (link))))) | |
fc9e8a14 JJ |
10348 | { |
10349 | if (tree_int_cst_sgn (TREE_VALUE (link)) < 0) | |
10350 | add_AT_int (enum_die, DW_AT_const_value, | |
10351 | tree_low_cst (TREE_VALUE (link), 0)); | |
10352 | else | |
10353 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
35dc2bd8 | 10354 | tree_low_cst (TREE_VALUE (link), 1)); |
fc9e8a14 | 10355 | } |
a3f97cbb JW |
10356 | } |
10357 | } | |
273dbe67 JM |
10358 | else |
10359 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
10360 | } |
10361 | ||
a3f97cbb JW |
10362 | /* Generate a DIE to represent either a real live formal parameter decl or to |
10363 | represent just the type of some formal parameter position in some function | |
10364 | type. | |
71dfc51f | 10365 | |
a3f97cbb JW |
10366 | Note that this routine is a bit unusual because its argument may be a |
10367 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
10368 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
10369 | node. If it's the former then this function is being called to output a | |
10370 | DIE to represent a formal parameter object (or some inlining thereof). If | |
10371 | it's the latter, then this function is only being called to output a | |
10372 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
10373 | argument type of some subprogram type. */ | |
71dfc51f | 10374 | |
a94dbf2c | 10375 | static dw_die_ref |
7080f735 | 10376 | gen_formal_parameter_die (tree node, dw_die_ref context_die) |
a3f97cbb | 10377 | { |
b3694847 | 10378 | dw_die_ref parm_die |
54ba1f0d | 10379 | = new_die (DW_TAG_formal_parameter, context_die, node); |
b3694847 | 10380 | tree origin; |
71dfc51f | 10381 | |
a3f97cbb JW |
10382 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
10383 | { | |
a3f97cbb JW |
10384 | case 'd': |
10385 | origin = decl_ultimate_origin (node); | |
10386 | if (origin != NULL) | |
a94dbf2c | 10387 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
10388 | else |
10389 | { | |
10390 | add_name_and_src_coords_attributes (parm_die, node); | |
10391 | add_type_attribute (parm_die, TREE_TYPE (node), | |
10392 | TREE_READONLY (node), | |
10393 | TREE_THIS_VOLATILE (node), | |
10394 | context_die); | |
bdb669cb JM |
10395 | if (DECL_ARTIFICIAL (node)) |
10396 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 10397 | } |
71dfc51f | 10398 | |
141719a8 JM |
10399 | equate_decl_number_to_die (node, parm_die); |
10400 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 10401 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 10402 | |
a3f97cbb JW |
10403 | break; |
10404 | ||
a3f97cbb | 10405 | case 't': |
71dfc51f | 10406 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
10407 | add_type_attribute (parm_die, node, 0, 0, context_die); |
10408 | break; | |
10409 | ||
a3f97cbb JW |
10410 | default: |
10411 | abort (); | |
10412 | } | |
71dfc51f | 10413 | |
a94dbf2c | 10414 | return parm_die; |
a3f97cbb JW |
10415 | } |
10416 | ||
10417 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
10418 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 10419 | |
a3f97cbb | 10420 | static void |
7080f735 | 10421 | gen_unspecified_parameters_die (tree decl_or_type, dw_die_ref context_die) |
a3f97cbb | 10422 | { |
54ba1f0d | 10423 | new_die (DW_TAG_unspecified_parameters, context_die, decl_or_type); |
a3f97cbb JW |
10424 | } |
10425 | ||
10426 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
10427 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
10428 | parameters as specified in some function type specification (except for | |
1cfdcc15 | 10429 | those which appear as part of a function *definition*). */ |
71dfc51f | 10430 | |
a3f97cbb | 10431 | static void |
7080f735 | 10432 | gen_formal_types_die (tree function_or_method_type, dw_die_ref context_die) |
a3f97cbb | 10433 | { |
b3694847 SS |
10434 | tree link; |
10435 | tree formal_type = NULL; | |
10436 | tree first_parm_type; | |
5daf7c0a | 10437 | tree arg; |
a3f97cbb | 10438 | |
5daf7c0a JM |
10439 | if (TREE_CODE (function_or_method_type) == FUNCTION_DECL) |
10440 | { | |
10441 | arg = DECL_ARGUMENTS (function_or_method_type); | |
10442 | function_or_method_type = TREE_TYPE (function_or_method_type); | |
10443 | } | |
10444 | else | |
10445 | arg = NULL_TREE; | |
c26fbbca | 10446 | |
5daf7c0a | 10447 | first_parm_type = TYPE_ARG_TYPES (function_or_method_type); |
a3f97cbb | 10448 | |
556273e0 | 10449 | /* Make our first pass over the list of formal parameter types and output a |
a3f97cbb | 10450 | DW_TAG_formal_parameter DIE for each one. */ |
5daf7c0a | 10451 | for (link = first_parm_type; link; ) |
a3f97cbb | 10452 | { |
b3694847 | 10453 | dw_die_ref parm_die; |
556273e0 | 10454 | |
a3f97cbb JW |
10455 | formal_type = TREE_VALUE (link); |
10456 | if (formal_type == void_type_node) | |
10457 | break; | |
10458 | ||
10459 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c | 10460 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
5daf7c0a JM |
10461 | if ((TREE_CODE (function_or_method_type) == METHOD_TYPE |
10462 | && link == first_parm_type) | |
10463 | || (arg && DECL_ARTIFICIAL (arg))) | |
a94dbf2c | 10464 | add_AT_flag (parm_die, DW_AT_artificial, 1); |
5daf7c0a JM |
10465 | |
10466 | link = TREE_CHAIN (link); | |
10467 | if (arg) | |
10468 | arg = TREE_CHAIN (arg); | |
a3f97cbb JW |
10469 | } |
10470 | ||
10471 | /* If this function type has an ellipsis, add a | |
10472 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
10473 | if (formal_type != void_type_node) | |
10474 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
10475 | ||
556273e0 | 10476 | /* Make our second (and final) pass over the list of formal parameter types |
a3f97cbb JW |
10477 | and output DIEs to represent those types (as necessary). */ |
10478 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
2ad9852d | 10479 | link && TREE_VALUE (link); |
a3f97cbb | 10480 | link = TREE_CHAIN (link)) |
2ad9852d | 10481 | gen_type_die (TREE_VALUE (link), context_die); |
a3f97cbb JW |
10482 | } |
10483 | ||
10a11b75 JM |
10484 | /* We want to generate the DIE for TYPE so that we can generate the |
10485 | die for MEMBER, which has been defined; we will need to refer back | |
10486 | to the member declaration nested within TYPE. If we're trying to | |
10487 | generate minimal debug info for TYPE, processing TYPE won't do the | |
10488 | trick; we need to attach the member declaration by hand. */ | |
10489 | ||
10490 | static void | |
7080f735 | 10491 | gen_type_die_for_member (tree type, tree member, dw_die_ref context_die) |
10a11b75 JM |
10492 | { |
10493 | gen_type_die (type, context_die); | |
10494 | ||
10495 | /* If we're trying to avoid duplicate debug info, we may not have | |
10496 | emitted the member decl for this function. Emit it now. */ | |
10497 | if (TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)) | |
10498 | && ! lookup_decl_die (member)) | |
10499 | { | |
10500 | if (decl_ultimate_origin (member)) | |
10501 | abort (); | |
10502 | ||
10503 | push_decl_scope (type); | |
10504 | if (TREE_CODE (member) == FUNCTION_DECL) | |
10505 | gen_subprogram_die (member, lookup_type_die (type)); | |
10506 | else | |
10507 | gen_variable_die (member, lookup_type_die (type)); | |
2ad9852d | 10508 | |
10a11b75 JM |
10509 | pop_decl_scope (); |
10510 | } | |
10511 | } | |
10512 | ||
2ad9852d RK |
10513 | /* Generate the DWARF2 info for the "abstract" instance of a function which we |
10514 | may later generate inlined and/or out-of-line instances of. */ | |
10a11b75 | 10515 | |
e1772ac0 | 10516 | static void |
7080f735 | 10517 | dwarf2out_abstract_function (tree decl) |
10a11b75 | 10518 | { |
b3694847 | 10519 | dw_die_ref old_die; |
777ad4c2 | 10520 | tree save_fn; |
5daf7c0a JM |
10521 | tree context; |
10522 | int was_abstract = DECL_ABSTRACT (decl); | |
10523 | ||
10524 | /* Make sure we have the actual abstract inline, not a clone. */ | |
10525 | decl = DECL_ORIGIN (decl); | |
10a11b75 | 10526 | |
c26fbbca | 10527 | old_die = lookup_decl_die (decl); |
10a11b75 JM |
10528 | if (old_die && get_AT_unsigned (old_die, DW_AT_inline)) |
10529 | /* We've already generated the abstract instance. */ | |
10530 | return; | |
10531 | ||
5daf7c0a JM |
10532 | /* Be sure we've emitted the in-class declaration DIE (if any) first, so |
10533 | we don't get confused by DECL_ABSTRACT. */ | |
8458e954 JS |
10534 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10535 | { | |
10536 | context = decl_class_context (decl); | |
10537 | if (context) | |
10538 | gen_type_die_for_member | |
10539 | (context, decl, decl_function_context (decl) ? NULL : comp_unit_die); | |
10540 | } | |
c26fbbca | 10541 | |
5daf7c0a | 10542 | /* Pretend we've just finished compiling this function. */ |
777ad4c2 JM |
10543 | save_fn = current_function_decl; |
10544 | current_function_decl = decl; | |
10545 | ||
10a11b75 JM |
10546 | set_decl_abstract_flags (decl, 1); |
10547 | dwarf2out_decl (decl); | |
5daf7c0a JM |
10548 | if (! was_abstract) |
10549 | set_decl_abstract_flags (decl, 0); | |
777ad4c2 JM |
10550 | |
10551 | current_function_decl = save_fn; | |
10a11b75 JM |
10552 | } |
10553 | ||
a3f97cbb JW |
10554 | /* Generate a DIE to represent a declared function (either file-scope or |
10555 | block-local). */ | |
71dfc51f | 10556 | |
a3f97cbb | 10557 | static void |
7080f735 | 10558 | gen_subprogram_die (tree decl, dw_die_ref context_die) |
a3f97cbb JW |
10559 | { |
10560 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
b3694847 SS |
10561 | tree origin = decl_ultimate_origin (decl); |
10562 | dw_die_ref subr_die; | |
10563 | rtx fp_reg; | |
10564 | tree fn_arg_types; | |
10565 | tree outer_scope; | |
10566 | dw_die_ref old_die = lookup_decl_die (decl); | |
10567 | int declaration = (current_function_decl != decl | |
10568 | || class_scope_p (context_die)); | |
a3f97cbb | 10569 | |
2ad9852d RK |
10570 | /* It is possible to have both DECL_ABSTRACT and DECLARATION be true if we |
10571 | started to generate the abstract instance of an inline, decided to output | |
10572 | its containing class, and proceeded to emit the declaration of the inline | |
10573 | from the member list for the class. If so, DECLARATION takes priority; | |
10574 | we'll get back to the abstract instance when done with the class. */ | |
10a11b75 | 10575 | |
1cfdcc15 JM |
10576 | /* The class-scope declaration DIE must be the primary DIE. */ |
10577 | if (origin && declaration && class_scope_p (context_die)) | |
10578 | { | |
10579 | origin = NULL; | |
10580 | if (old_die) | |
10581 | abort (); | |
10582 | } | |
10583 | ||
a3f97cbb JW |
10584 | if (origin != NULL) |
10585 | { | |
777ad4c2 | 10586 | if (declaration && ! local_scope_p (context_die)) |
10a11b75 JM |
10587 | abort (); |
10588 | ||
8d8238b6 JM |
10589 | /* Fixup die_parent for the abstract instance of a nested |
10590 | inline function. */ | |
10591 | if (old_die && old_die->die_parent == NULL) | |
10592 | add_child_die (context_die, old_die); | |
10593 | ||
54ba1f0d | 10594 | subr_die = new_die (DW_TAG_subprogram, context_die, decl); |
a3f97cbb JW |
10595 | add_abstract_origin_attribute (subr_die, origin); |
10596 | } | |
bdb669cb JM |
10597 | else if (old_die) |
10598 | { | |
f31686a3 | 10599 | unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); |
a94dbf2c | 10600 | |
1edf43d6 JM |
10601 | if (!get_AT_flag (old_die, DW_AT_declaration) |
10602 | /* We can have a normal definition following an inline one in the | |
10603 | case of redefinition of GNU C extern inlines. | |
10604 | It seems reasonable to use AT_specification in this case. */ | |
10605 | && !get_AT_unsigned (old_die, DW_AT_inline)) | |
b75ab88b NC |
10606 | { |
10607 | /* ??? This can happen if there is a bug in the program, for | |
10608 | instance, if it has duplicate function definitions. Ideally, | |
10609 | we should detect this case and ignore it. For now, if we have | |
10610 | already reported an error, any error at all, then assume that | |
4fe9b91c | 10611 | we got here because of an input error, not a dwarf2 bug. */ |
b75ab88b NC |
10612 | if (errorcount) |
10613 | return; | |
10614 | abort (); | |
10615 | } | |
4b674448 JM |
10616 | |
10617 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
10618 | maybe use the old DIE. We always want the DIE for this function |
10619 | that has the *_pc attributes to be under comp_unit_die so the | |
cb9e9d8d JM |
10620 | debugger can find it. We also need to do this for abstract |
10621 | instances of inlines, since the spec requires the out-of-line copy | |
10622 | to have the same parent. For local class methods, this doesn't | |
10623 | apply; we just use the old DIE. */ | |
10624 | if ((old_die->die_parent == comp_unit_die || context_die == NULL) | |
a96c67ec JM |
10625 | && (DECL_ARTIFICIAL (decl) |
10626 | || (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
10627 | && (get_AT_unsigned (old_die, DW_AT_decl_line) | |
f31686a3 | 10628 | == (unsigned) DECL_SOURCE_LINE (decl))))) |
bdb669cb | 10629 | { |
4b674448 JM |
10630 | subr_die = old_die; |
10631 | ||
10632 | /* Clear out the declaration attribute and the parm types. */ | |
10633 | remove_AT (subr_die, DW_AT_declaration); | |
10634 | remove_children (subr_die); | |
10635 | } | |
10636 | else | |
10637 | { | |
54ba1f0d | 10638 | subr_die = new_die (DW_TAG_subprogram, context_die, decl); |
4b674448 | 10639 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); |
bdb669cb JM |
10640 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
10641 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
10642 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
f31686a3 | 10643 | != (unsigned) DECL_SOURCE_LINE (decl)) |
bdb669cb | 10644 | add_AT_unsigned |
f31686a3 | 10645 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); |
bdb669cb JM |
10646 | } |
10647 | } | |
a3f97cbb JW |
10648 | else |
10649 | { | |
54ba1f0d | 10650 | subr_die = new_die (DW_TAG_subprogram, context_die, decl); |
556273e0 | 10651 | |
273dbe67 JM |
10652 | if (TREE_PUBLIC (decl)) |
10653 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 10654 | |
a3f97cbb | 10655 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
10656 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10657 | { | |
2ad9852d RK |
10658 | add_prototyped_attribute (subr_die, TREE_TYPE (decl)); |
10659 | add_type_attribute (subr_die, TREE_TYPE (TREE_TYPE (decl)), | |
10660 | 0, 0, context_die); | |
4927276d | 10661 | } |
71dfc51f | 10662 | |
a3f97cbb | 10663 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
10664 | if (DECL_ARTIFICIAL (decl)) |
10665 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
2ad9852d | 10666 | |
a94dbf2c JM |
10667 | if (TREE_PROTECTED (decl)) |
10668 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
10669 | else if (TREE_PRIVATE (decl)) | |
10670 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 10671 | } |
4edb7b60 | 10672 | |
a94dbf2c JM |
10673 | if (declaration) |
10674 | { | |
2ad9852d | 10675 | if (!old_die || !get_AT_unsigned (old_die, DW_AT_inline)) |
1edf43d6 JM |
10676 | { |
10677 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
10678 | ||
10679 | /* The first time we see a member function, it is in the context of | |
10680 | the class to which it belongs. We make sure of this by emitting | |
10681 | the class first. The next time is the definition, which is | |
10682 | handled above. The two may come from the same source text. */ | |
10683 | if (DECL_CONTEXT (decl) || DECL_ABSTRACT (decl)) | |
10684 | equate_decl_number_to_die (decl, subr_die); | |
10685 | } | |
a94dbf2c JM |
10686 | } |
10687 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 10688 | { |
1bb17c21 | 10689 | if (DECL_DECLARED_INLINE_P (decl)) |
61b32c02 | 10690 | { |
1bb17c21 | 10691 | if (cgraph_function_possibly_inlined_p (decl)) |
61b32c02 JM |
10692 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); |
10693 | else | |
1bb17c21 | 10694 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_not_inlined); |
61b32c02 | 10695 | } |
61b32c02 | 10696 | else |
1bb17c21 JH |
10697 | { |
10698 | if (cgraph_function_possibly_inlined_p (decl)) | |
10699 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); | |
10700 | else | |
10701 | abort (); | |
10702 | } | |
61b32c02 | 10703 | |
a3f97cbb JW |
10704 | equate_decl_number_to_die (decl, subr_die); |
10705 | } | |
10706 | else if (!DECL_EXTERNAL (decl)) | |
10707 | { | |
2ad9852d | 10708 | if (!old_die || !get_AT_unsigned (old_die, DW_AT_inline)) |
ba7b35df | 10709 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 10710 | |
5c90448c | 10711 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
df696a75 | 10712 | current_function_funcdef_no); |
7d4440be | 10713 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c | 10714 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
df696a75 | 10715 | current_function_funcdef_no); |
a3f97cbb JW |
10716 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
10717 | ||
d291dd49 JM |
10718 | add_pubname (decl, subr_die); |
10719 | add_arange (decl, subr_die); | |
10720 | ||
a3f97cbb | 10721 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
10722 | /* Add a reference to the FDE for this routine. */ |
10723 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
10724 | #endif | |
10725 | ||
810429b7 | 10726 | /* Define the "frame base" location for this routine. We use the |
73c68f61 SS |
10727 | frame pointer or stack pointer registers, since the RTL for local |
10728 | variables is relative to one of them. */ | |
b1ccbc24 RK |
10729 | fp_reg |
10730 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
10731 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 10732 | |
ef76d03b JW |
10733 | #if 0 |
10734 | /* ??? This fails for nested inline functions, because context_display | |
10735 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 10736 | if (current_function_needs_context) |
ef76d03b | 10737 | add_AT_location_description (subr_die, DW_AT_static_link, |
b9203463 | 10738 | loc_descriptor (lookup_static_chain (decl))); |
ef76d03b | 10739 | #endif |
a3f97cbb JW |
10740 | } |
10741 | ||
10742 | /* Now output descriptions of the arguments for this function. This gets | |
556273e0 | 10743 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list |
a3f97cbb JW |
10744 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing |
10745 | `...' at the end of the formal parameter list. In order to find out if | |
10746 | there was a trailing ellipsis or not, we must instead look at the type | |
10747 | associated with the FUNCTION_DECL. This will be a node of type | |
10748 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
556273e0 | 10749 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be |
a3f97cbb | 10750 | an ellipsis at the end. */ |
71dfc51f | 10751 | |
a3f97cbb | 10752 | /* In the case where we are describing a mere function declaration, all we |
556273e0 | 10753 | need to do here (and all we *can* do here) is to describe the *types* of |
a3f97cbb | 10754 | its formal parameters. */ |
4927276d | 10755 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 10756 | ; |
4edb7b60 | 10757 | else if (declaration) |
5daf7c0a | 10758 | gen_formal_types_die (decl, subr_die); |
a3f97cbb JW |
10759 | else |
10760 | { | |
f9da5064 | 10761 | /* Generate DIEs to represent all known formal parameters. */ |
b3694847 SS |
10762 | tree arg_decls = DECL_ARGUMENTS (decl); |
10763 | tree parm; | |
a3f97cbb JW |
10764 | |
10765 | /* When generating DIEs, generate the unspecified_parameters DIE | |
73c68f61 | 10766 | instead if we come across the arg "__builtin_va_alist" */ |
a3f97cbb | 10767 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) |
71dfc51f RK |
10768 | if (TREE_CODE (parm) == PARM_DECL) |
10769 | { | |
db3cf6fb MS |
10770 | if (DECL_NAME (parm) |
10771 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
10772 | "__builtin_va_alist")) | |
71dfc51f RK |
10773 | gen_unspecified_parameters_die (parm, subr_die); |
10774 | else | |
10775 | gen_decl_die (parm, subr_die); | |
10776 | } | |
a3f97cbb | 10777 | |
4fe9b91c | 10778 | /* Decide whether we need an unspecified_parameters DIE at the end. |
73c68f61 SS |
10779 | There are 2 more cases to do this for: 1) the ansi ... declaration - |
10780 | this is detectable when the end of the arg list is not a | |
10781 | void_type_node 2) an unprototyped function declaration (not a | |
10782 | definition). This just means that we have no info about the | |
10783 | parameters at all. */ | |
a3f97cbb | 10784 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); |
71dfc51f | 10785 | if (fn_arg_types != NULL) |
a3f97cbb | 10786 | { |
beb235f8 | 10787 | /* This is the prototyped case, check for.... */ |
a3f97cbb | 10788 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) |
71dfc51f | 10789 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 10790 | } |
71dfc51f RK |
10791 | else if (DECL_INITIAL (decl) == NULL_TREE) |
10792 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
10793 | } |
10794 | ||
10795 | /* Output Dwarf info for all of the stuff within the body of the function | |
10796 | (if it has one - it may be just a declaration). */ | |
10797 | outer_scope = DECL_INITIAL (decl); | |
10798 | ||
2ad9852d RK |
10799 | /* OUTER_SCOPE is a pointer to the outermost BLOCK node created to represent |
10800 | a function. This BLOCK actually represents the outermost binding contour | |
10801 | for the function, i.e. the contour in which the function's formal | |
10802 | parameters and labels get declared. Curiously, it appears that the front | |
10803 | end doesn't actually put the PARM_DECL nodes for the current function onto | |
10804 | the BLOCK_VARS list for this outer scope, but are strung off of the | |
10805 | DECL_ARGUMENTS list for the function instead. | |
10806 | ||
10807 | The BLOCK_VARS list for the `outer_scope' does provide us with a list of | |
10808 | the LABEL_DECL nodes for the function however, and we output DWARF info | |
10809 | for those in decls_for_scope. Just within the `outer_scope' there will be | |
10810 | a BLOCK node representing the function's outermost pair of curly braces, | |
10811 | and any blocks used for the base and member initializers of a C++ | |
d7248bff | 10812 | constructor function. */ |
4edb7b60 | 10813 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
10814 | { |
10815 | current_function_has_inlines = 0; | |
10816 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 10817 | |
ce61cc73 | 10818 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
10819 | if (current_function_has_inlines) |
10820 | { | |
10821 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
10822 | if (! comp_unit_has_inlines) | |
10823 | { | |
10824 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
10825 | comp_unit_has_inlines = 1; | |
10826 | } | |
10827 | } | |
10828 | #endif | |
10829 | } | |
a3f97cbb JW |
10830 | } |
10831 | ||
10832 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 10833 | |
a3f97cbb | 10834 | static void |
7080f735 | 10835 | gen_variable_die (tree decl, dw_die_ref context_die) |
a3f97cbb | 10836 | { |
b3694847 | 10837 | tree origin = decl_ultimate_origin (decl); |
54ba1f0d | 10838 | dw_die_ref var_die = new_die (DW_TAG_variable, context_die, decl); |
71dfc51f | 10839 | |
bdb669cb | 10840 | dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
10841 | int declaration = (DECL_EXTERNAL (decl) |
10842 | || class_scope_p (context_die)); | |
4edb7b60 | 10843 | |
a3f97cbb | 10844 | if (origin != NULL) |
71dfc51f | 10845 | add_abstract_origin_attribute (var_die, origin); |
2ad9852d | 10846 | |
f76b8156 | 10847 | /* Loop unrolling can create multiple blocks that refer to the same |
2ad9852d RK |
10848 | static variable, so we must test for the DW_AT_declaration flag. |
10849 | ||
10850 | ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
f76b8156 | 10851 | copy decls and set the DECL_ABSTRACT flag on them instead of |
2ad9852d RK |
10852 | sharing them. |
10853 | ||
10854 | ??? Duplicated blocks have been rewritten to use .debug_ranges. */ | |
f76b8156 | 10855 | else if (old_die && TREE_STATIC (decl) |
c26fbbca | 10856 | && get_AT_flag (old_die, DW_AT_declaration) == 1) |
bdb669cb | 10857 | { |
e689ae67 | 10858 | /* This is a definition of a C++ class level static. */ |
bdb669cb JM |
10859 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
10860 | if (DECL_NAME (decl)) | |
10861 | { | |
f31686a3 | 10862 | unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); |
71dfc51f | 10863 | |
bdb669cb JM |
10864 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
10865 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 10866 | |
bdb669cb | 10867 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
f31686a3 | 10868 | != (unsigned) DECL_SOURCE_LINE (decl)) |
71dfc51f RK |
10869 | |
10870 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
f31686a3 | 10871 | DECL_SOURCE_LINE (decl)); |
bdb669cb JM |
10872 | } |
10873 | } | |
a3f97cbb JW |
10874 | else |
10875 | { | |
10876 | add_name_and_src_coords_attributes (var_die, decl); | |
2ad9852d | 10877 | add_type_attribute (var_die, TREE_TYPE (decl), TREE_READONLY (decl), |
a3f97cbb | 10878 | TREE_THIS_VOLATILE (decl), context_die); |
71dfc51f | 10879 | |
273dbe67 JM |
10880 | if (TREE_PUBLIC (decl)) |
10881 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 10882 | |
273dbe67 JM |
10883 | if (DECL_ARTIFICIAL (decl)) |
10884 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 10885 | |
a94dbf2c JM |
10886 | if (TREE_PROTECTED (decl)) |
10887 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
10888 | else if (TREE_PRIVATE (decl)) | |
10889 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 10890 | } |
4edb7b60 JM |
10891 | |
10892 | if (declaration) | |
10893 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
556273e0 | 10894 | |
9765e357 | 10895 | if (class_scope_p (context_die) || DECL_ABSTRACT (decl)) |
4edb7b60 JM |
10896 | equate_decl_number_to_die (decl, var_die); |
10897 | ||
10898 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb JW |
10899 | { |
10900 | add_location_or_const_value_attribute (var_die, decl); | |
d291dd49 | 10901 | add_pubname (decl, var_die); |
a3f97cbb | 10902 | } |
1bfb5f8f JM |
10903 | else |
10904 | tree_add_const_value_attribute (var_die, decl); | |
a3f97cbb JW |
10905 | } |
10906 | ||
10907 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 10908 | |
a3f97cbb | 10909 | static void |
7080f735 | 10910 | gen_label_die (tree decl, dw_die_ref context_die) |
a3f97cbb | 10911 | { |
b3694847 | 10912 | tree origin = decl_ultimate_origin (decl); |
54ba1f0d | 10913 | dw_die_ref lbl_die = new_die (DW_TAG_label, context_die, decl); |
b3694847 | 10914 | rtx insn; |
a3f97cbb | 10915 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 10916 | |
a3f97cbb | 10917 | if (origin != NULL) |
71dfc51f | 10918 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 10919 | else |
71dfc51f RK |
10920 | add_name_and_src_coords_attributes (lbl_die, decl); |
10921 | ||
a3f97cbb | 10922 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 10923 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
10924 | else |
10925 | { | |
10926 | insn = DECL_RTL (decl); | |
088e7160 NC |
10927 | |
10928 | /* Deleted labels are programmer specified labels which have been | |
6356f892 | 10929 | eliminated because of various optimizations. We still emit them |
088e7160 NC |
10930 | here so that it is possible to put breakpoints on them. */ |
10931 | if (GET_CODE (insn) == CODE_LABEL | |
10932 | || ((GET_CODE (insn) == NOTE | |
10933 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL))) | |
a3f97cbb | 10934 | { |
556273e0 KH |
10935 | /* When optimization is enabled (via -O) some parts of the compiler |
10936 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
a3f97cbb JW |
10937 | represent source-level labels which were explicitly declared by |
10938 | the user. This really shouldn't be happening though, so catch | |
10939 | it if it ever does happen. */ | |
10940 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
10941 | abort (); |
10942 | ||
66234570 | 10943 | ASM_GENERATE_INTERNAL_LABEL (label, "L", CODE_LABEL_NUMBER (insn)); |
a3f97cbb JW |
10944 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
10945 | } | |
10946 | } | |
10947 | } | |
10948 | ||
10949 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 10950 | |
a3f97cbb | 10951 | static void |
7080f735 | 10952 | gen_lexical_block_die (tree stmt, dw_die_ref context_die, int depth) |
a3f97cbb | 10953 | { |
54ba1f0d | 10954 | dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die, stmt); |
a3f97cbb | 10955 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f RK |
10956 | |
10957 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 10958 | { |
a20612aa RH |
10959 | if (BLOCK_FRAGMENT_CHAIN (stmt)) |
10960 | { | |
10961 | tree chain; | |
10962 | ||
2bee6045 | 10963 | add_AT_range_list (stmt_die, DW_AT_ranges, add_ranges (stmt)); |
a20612aa RH |
10964 | |
10965 | chain = BLOCK_FRAGMENT_CHAIN (stmt); | |
10966 | do | |
10967 | { | |
10968 | add_ranges (chain); | |
10969 | chain = BLOCK_FRAGMENT_CHAIN (chain); | |
10970 | } | |
10971 | while (chain); | |
10972 | add_ranges (NULL); | |
10973 | } | |
10974 | else | |
10975 | { | |
10976 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, | |
10977 | BLOCK_NUMBER (stmt)); | |
10978 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); | |
10979 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, | |
10980 | BLOCK_NUMBER (stmt)); | |
10981 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); | |
10982 | } | |
a3f97cbb | 10983 | } |
71dfc51f | 10984 | |
d7248bff | 10985 | decls_for_scope (stmt, stmt_die, depth); |
a3f97cbb JW |
10986 | } |
10987 | ||
10988 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 10989 | |
a3f97cbb | 10990 | static void |
7080f735 | 10991 | gen_inlined_subroutine_die (tree stmt, dw_die_ref context_die, int depth) |
a3f97cbb | 10992 | { |
9bdca184 AO |
10993 | tree decl = block_ultimate_origin (stmt); |
10994 | ||
10995 | /* Emit info for the abstract instance first, if we haven't yet. We | |
10996 | must emit this even if the block is abstract, otherwise when we | |
10997 | emit the block below (or elsewhere), we may end up trying to emit | |
10998 | a die whose origin die hasn't been emitted, and crashing. */ | |
10999 | dwarf2out_abstract_function (decl); | |
11000 | ||
71dfc51f | 11001 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 11002 | { |
b3694847 | 11003 | dw_die_ref subr_die |
54ba1f0d | 11004 | = new_die (DW_TAG_inlined_subroutine, context_die, stmt); |
d7248bff | 11005 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 11006 | |
ab72d377 | 11007 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c | 11008 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
18c038b9 | 11009 | BLOCK_NUMBER (stmt)); |
a3f97cbb | 11010 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
18c038b9 MM |
11011 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, |
11012 | BLOCK_NUMBER (stmt)); | |
a3f97cbb | 11013 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
d7248bff | 11014 | decls_for_scope (stmt, subr_die, depth); |
7e23cb16 | 11015 | current_function_has_inlines = 1; |
a3f97cbb | 11016 | } |
06e224f7 AO |
11017 | else |
11018 | /* We may get here if we're the outer block of function A that was | |
11019 | inlined into function B that was inlined into function C. When | |
11020 | generating debugging info for C, dwarf2out_abstract_function(B) | |
11021 | would mark all inlined blocks as abstract, including this one. | |
11022 | So, we wouldn't (and shouldn't) expect labels to be generated | |
11023 | for this one. Instead, just emit debugging info for | |
11024 | declarations within the block. This is particularly important | |
11025 | in the case of initializers of arguments passed from B to us: | |
11026 | if they're statement expressions containing declarations, we | |
11027 | wouldn't generate dies for their abstract variables, and then, | |
11028 | when generating dies for the real variables, we'd die (pun | |
11029 | intended :-) */ | |
11030 | gen_lexical_block_die (stmt, context_die, depth); | |
a3f97cbb JW |
11031 | } |
11032 | ||
11033 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 11034 | |
a3f97cbb | 11035 | static void |
7080f735 | 11036 | gen_field_die (tree decl, dw_die_ref context_die) |
a3f97cbb | 11037 | { |
a53efda2 | 11038 | dw_die_ref decl_die; |
71dfc51f | 11039 | |
a53efda2 JZ |
11040 | if (TREE_TYPE (decl) == error_mark_node) |
11041 | return; | |
7080f735 | 11042 | |
a53efda2 | 11043 | decl_die = new_die (DW_TAG_member, context_die, decl); |
a3f97cbb | 11044 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
11045 | add_type_attribute (decl_die, member_declared_type (decl), |
11046 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
11047 | context_die); | |
71dfc51f | 11048 | |
a3f97cbb JW |
11049 | if (DECL_BIT_FIELD_TYPE (decl)) |
11050 | { | |
11051 | add_byte_size_attribute (decl_die, decl); | |
11052 | add_bit_size_attribute (decl_die, decl); | |
11053 | add_bit_offset_attribute (decl_die, decl); | |
11054 | } | |
71dfc51f | 11055 | |
a94dbf2c JM |
11056 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
11057 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 11058 | |
273dbe67 JM |
11059 | if (DECL_ARTIFICIAL (decl)) |
11060 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 11061 | |
a94dbf2c JM |
11062 | if (TREE_PROTECTED (decl)) |
11063 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
11064 | else if (TREE_PRIVATE (decl)) | |
11065 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
11066 | } |
11067 | ||
ab72d377 JM |
11068 | #if 0 |
11069 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
11070 | Use modified_type_die instead. | |
a3f97cbb JW |
11071 | We keep this code here just in case these types of DIEs may be needed to |
11072 | represent certain things in other languages (e.g. Pascal) someday. */ | |
2ad9852d | 11073 | |
a3f97cbb | 11074 | static void |
7080f735 | 11075 | gen_pointer_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11076 | { |
b3694847 | 11077 | dw_die_ref ptr_die |
54ba1f0d | 11078 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die), type); |
71dfc51f | 11079 | |
a3f97cbb | 11080 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 11081 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 11082 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
11083 | } |
11084 | ||
ab72d377 JM |
11085 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
11086 | Use modified_type_die instead. | |
a3f97cbb JW |
11087 | We keep this code here just in case these types of DIEs may be needed to |
11088 | represent certain things in other languages (e.g. Pascal) someday. */ | |
2ad9852d | 11089 | |
a3f97cbb | 11090 | static void |
7080f735 | 11091 | gen_reference_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11092 | { |
b3694847 | 11093 | dw_die_ref ref_die |
54ba1f0d | 11094 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die), type); |
71dfc51f | 11095 | |
a3f97cbb | 11096 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 11097 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 11098 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 11099 | } |
ab72d377 | 11100 | #endif |
a3f97cbb JW |
11101 | |
11102 | /* Generate a DIE for a pointer to a member type. */ | |
2ad9852d | 11103 | |
a3f97cbb | 11104 | static void |
7080f735 | 11105 | gen_ptr_to_mbr_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11106 | { |
b3694847 | 11107 | dw_die_ref ptr_die |
54ba1f0d RH |
11108 | = new_die (DW_TAG_ptr_to_member_type, |
11109 | scope_die_for (type, context_die), type); | |
71dfc51f | 11110 | |
a3f97cbb | 11111 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 11112 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 11113 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
11114 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
11115 | } | |
11116 | ||
11117 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 11118 | |
a96c67ec | 11119 | static dw_die_ref |
7080f735 | 11120 | gen_compile_unit_die (const char *filename) |
a3f97cbb | 11121 | { |
b3694847 | 11122 | dw_die_ref die; |
a3f97cbb | 11123 | char producer[250]; |
3ac88239 | 11124 | const char *language_string = lang_hooks.name; |
a96c67ec | 11125 | int language; |
a3f97cbb | 11126 | |
54ba1f0d | 11127 | die = new_die (DW_TAG_compile_unit, NULL, NULL); |
bdb669cb | 11128 | |
c4274b22 RH |
11129 | if (filename) |
11130 | { | |
11131 | add_name_attribute (die, filename); | |
e3091a5f R |
11132 | /* Don't add cwd for <built-in>. */ |
11133 | if (filename[0] != DIR_SEPARATOR && filename[0] != '<') | |
c4274b22 RH |
11134 | add_comp_dir_attribute (die); |
11135 | } | |
a3f97cbb JW |
11136 | |
11137 | sprintf (producer, "%s %s", language_string, version_string); | |
11138 | ||
11139 | #ifdef MIPS_DEBUGGING_INFO | |
11140 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
11141 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
11142 | not appear in the producer string, the debugger reaches the conclusion | |
11143 | that the object file is stripped and has no debugging information. | |
11144 | To get the MIPS/SGI debugger to believe that there is debugging | |
11145 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
11146 | if (debug_info_level > DINFO_LEVEL_TERSE) |
11147 | strcat (producer, " -g"); | |
a3f97cbb JW |
11148 | #endif |
11149 | ||
a96c67ec | 11150 | add_AT_string (die, DW_AT_producer, producer); |
a9d38797 | 11151 | |
a3f97cbb | 11152 | if (strcmp (language_string, "GNU C++") == 0) |
a96c67ec | 11153 | language = DW_LANG_C_plus_plus; |
a3f97cbb | 11154 | else if (strcmp (language_string, "GNU Ada") == 0) |
8cb5fbbf | 11155 | language = DW_LANG_Ada95; |
a9d38797 | 11156 | else if (strcmp (language_string, "GNU F77") == 0) |
a96c67ec | 11157 | language = DW_LANG_Fortran77; |
bc28c45b | 11158 | else if (strcmp (language_string, "GNU Pascal") == 0) |
a96c67ec | 11159 | language = DW_LANG_Pascal83; |
28985b81 AG |
11160 | else if (strcmp (language_string, "GNU Java") == 0) |
11161 | language = DW_LANG_Java; | |
a3f97cbb | 11162 | else |
a96c67ec | 11163 | language = DW_LANG_C89; |
a9d38797 | 11164 | |
a96c67ec | 11165 | add_AT_unsigned (die, DW_AT_language, language); |
a96c67ec | 11166 | return die; |
a3f97cbb JW |
11167 | } |
11168 | ||
11169 | /* Generate a DIE for a string type. */ | |
71dfc51f | 11170 | |
a3f97cbb | 11171 | static void |
7080f735 | 11172 | gen_string_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11173 | { |
b3694847 | 11174 | dw_die_ref type_die |
54ba1f0d | 11175 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die), type); |
71dfc51f | 11176 | |
bdb669cb | 11177 | equate_type_number_to_die (type, type_die); |
a3f97cbb | 11178 | |
2ad9852d RK |
11179 | /* ??? Fudge the string length attribute for now. |
11180 | TODO: add string length info. */ | |
11181 | #if 0 | |
11182 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); | |
11183 | bound_representation (upper_bound, 0, 'u'); | |
11184 | #endif | |
a3f97cbb JW |
11185 | } |
11186 | ||
61b32c02 | 11187 | /* Generate the DIE for a base class. */ |
71dfc51f | 11188 | |
61b32c02 | 11189 | static void |
7080f735 | 11190 | gen_inheritance_die (tree binfo, tree access, dw_die_ref context_die) |
61b32c02 | 11191 | { |
54ba1f0d | 11192 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die, binfo); |
71dfc51f | 11193 | |
61b32c02 JM |
11194 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
11195 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 11196 | |
61b32c02 JM |
11197 | if (TREE_VIA_VIRTUAL (binfo)) |
11198 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
2ad9852d | 11199 | |
dbbf88d1 | 11200 | if (access == access_public_node) |
61b32c02 | 11201 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); |
dbbf88d1 | 11202 | else if (access == access_protected_node) |
61b32c02 JM |
11203 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); |
11204 | } | |
11205 | ||
956d6950 | 11206 | /* Generate a DIE for a class member. */ |
71dfc51f | 11207 | |
a3f97cbb | 11208 | static void |
7080f735 | 11209 | gen_member_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11210 | { |
b3694847 | 11211 | tree member; |
dbbf88d1 | 11212 | tree binfo = TYPE_BINFO (type); |
10a11b75 | 11213 | dw_die_ref child; |
71dfc51f | 11214 | |
a3f97cbb JW |
11215 | /* If this is not an incomplete type, output descriptions of each of its |
11216 | members. Note that as we output the DIEs necessary to represent the | |
11217 | members of this record or union type, we will also be trying to output | |
11218 | DIEs to represent the *types* of those members. However the `type' | |
556273e0 | 11219 | function (above) will specifically avoid generating type DIEs for member |
eaec9b3d | 11220 | types *within* the list of member DIEs for this (containing) type except |
a3f97cbb JW |
11221 | for those types (of members) which are explicitly marked as also being |
11222 | members of this (containing) type themselves. The g++ front- end can | |
2ad9852d RK |
11223 | force any given type to be treated as a member of some other (containing) |
11224 | type by setting the TYPE_CONTEXT of the given (member) type to point to | |
11225 | the TREE node representing the appropriate (containing) type. */ | |
a3f97cbb | 11226 | |
61b32c02 | 11227 | /* First output info about the base classes. */ |
dbbf88d1 | 11228 | if (binfo && BINFO_BASETYPES (binfo)) |
a3f97cbb | 11229 | { |
dbbf88d1 NS |
11230 | tree bases = BINFO_BASETYPES (binfo); |
11231 | tree accesses = BINFO_BASEACCESSES (binfo); | |
b3694847 SS |
11232 | int n_bases = TREE_VEC_LENGTH (bases); |
11233 | int i; | |
61b32c02 JM |
11234 | |
11235 | for (i = 0; i < n_bases; i++) | |
dbbf88d1 NS |
11236 | gen_inheritance_die (TREE_VEC_ELT (bases, i), |
11237 | (accesses ? TREE_VEC_ELT (accesses, i) | |
11238 | : access_public_node), context_die); | |
a3f97cbb JW |
11239 | } |
11240 | ||
61b32c02 JM |
11241 | /* Now output info about the data members and type members. */ |
11242 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
10a11b75 JM |
11243 | { |
11244 | /* If we thought we were generating minimal debug info for TYPE | |
11245 | and then changed our minds, some of the member declarations | |
11246 | may have already been defined. Don't define them again, but | |
11247 | do put them in the right order. */ | |
11248 | ||
11249 | child = lookup_decl_die (member); | |
11250 | if (child) | |
11251 | splice_child_die (context_die, child); | |
11252 | else | |
11253 | gen_decl_die (member, context_die); | |
11254 | } | |
61b32c02 | 11255 | |
a3f97cbb | 11256 | /* Now output info about the function members (if any). */ |
61b32c02 | 11257 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
10a11b75 | 11258 | { |
5daf7c0a JM |
11259 | /* Don't include clones in the member list. */ |
11260 | if (DECL_ABSTRACT_ORIGIN (member)) | |
11261 | continue; | |
11262 | ||
10a11b75 JM |
11263 | child = lookup_decl_die (member); |
11264 | if (child) | |
11265 | splice_child_die (context_die, child); | |
11266 | else | |
11267 | gen_decl_die (member, context_die); | |
11268 | } | |
a3f97cbb JW |
11269 | } |
11270 | ||
10a11b75 JM |
11271 | /* Generate a DIE for a structure or union type. If TYPE_DECL_SUPPRESS_DEBUG |
11272 | is set, we pretend that the type was never defined, so we only get the | |
11273 | member DIEs needed by later specification DIEs. */ | |
71dfc51f | 11274 | |
a3f97cbb | 11275 | static void |
7080f735 | 11276 | gen_struct_or_union_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11277 | { |
b3694847 SS |
11278 | dw_die_ref type_die = lookup_type_die (type); |
11279 | dw_die_ref scope_die = 0; | |
11280 | int nested = 0; | |
10a11b75 | 11281 | int complete = (TYPE_SIZE (type) |
65e1263a JW |
11282 | && (! TYPE_STUB_DECL (type) |
11283 | || ! TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)))); | |
273dbe67 | 11284 | |
10a11b75 | 11285 | if (type_die && ! complete) |
273dbe67 | 11286 | return; |
a082c85a | 11287 | |
71dfc51f | 11288 | if (TYPE_CONTEXT (type) != NULL_TREE |
5f2f160c | 11289 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type))) |
a082c85a JM |
11290 | nested = 1; |
11291 | ||
a94dbf2c | 11292 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
11293 | |
11294 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 11295 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 11296 | { |
b3694847 | 11297 | dw_die_ref old_die = type_die; |
71dfc51f | 11298 | |
a3f97cbb JW |
11299 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
11300 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
54ba1f0d | 11301 | scope_die, type); |
a3f97cbb | 11302 | equate_type_number_to_die (type, type_die); |
273dbe67 JM |
11303 | if (old_die) |
11304 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
5de0e8d4 JM |
11305 | else |
11306 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 11307 | } |
4b674448 | 11308 | else |
273dbe67 | 11309 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb JW |
11310 | |
11311 | /* If this type has been completed, then give it a byte_size attribute and | |
11312 | then give a list of members. */ | |
2081603c | 11313 | if (complete) |
a3f97cbb | 11314 | { |
556273e0 | 11315 | /* Prevent infinite recursion in cases where the type of some member of |
73c68f61 | 11316 | this type is expressed in terms of this type itself. */ |
a3f97cbb | 11317 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 11318 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 11319 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 11320 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 11321 | |
ef76d03b JW |
11322 | /* If the first reference to this type was as the return type of an |
11323 | inline function, then it may not have a parent. Fix this now. */ | |
11324 | if (type_die->die_parent == NULL) | |
11325 | add_child_die (scope_die, type_die); | |
11326 | ||
273dbe67 JM |
11327 | push_decl_scope (type); |
11328 | gen_member_die (type, type_die); | |
11329 | pop_decl_scope (); | |
71dfc51f | 11330 | |
a94dbf2c JM |
11331 | /* GNU extension: Record what type our vtable lives in. */ |
11332 | if (TYPE_VFIELD (type)) | |
11333 | { | |
11334 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 11335 | |
de6e505e JM |
11336 | gen_type_die (vtype, context_die); |
11337 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
11338 | lookup_type_die (vtype)); | |
a94dbf2c | 11339 | } |
a3f97cbb | 11340 | } |
4b674448 | 11341 | else |
8a8c3656 JM |
11342 | { |
11343 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a30d4514 | 11344 | |
9765e357 | 11345 | /* We don't need to do this for function-local types. */ |
9702143f RK |
11346 | if (TYPE_STUB_DECL (type) |
11347 | && ! decl_function_context (TYPE_STUB_DECL (type))) | |
2ad9852d | 11348 | VARRAY_PUSH_TREE (incomplete_types, type); |
8a8c3656 | 11349 | } |
a3f97cbb JW |
11350 | } |
11351 | ||
11352 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 11353 | |
a3f97cbb | 11354 | static void |
7080f735 | 11355 | gen_subroutine_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11356 | { |
b3694847 SS |
11357 | tree return_type = TREE_TYPE (type); |
11358 | dw_die_ref subr_die | |
54ba1f0d RH |
11359 | = new_die (DW_TAG_subroutine_type, |
11360 | scope_die_for (type, context_die), type); | |
71dfc51f | 11361 | |
a3f97cbb JW |
11362 | equate_type_number_to_die (type, subr_die); |
11363 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 11364 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 11365 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
11366 | } |
11367 | ||
f9da5064 | 11368 | /* Generate a DIE for a type definition. */ |
71dfc51f | 11369 | |
a3f97cbb | 11370 | static void |
7080f735 | 11371 | gen_typedef_die (tree decl, dw_die_ref context_die) |
a3f97cbb | 11372 | { |
b3694847 SS |
11373 | dw_die_ref type_die; |
11374 | tree origin; | |
a94dbf2c JM |
11375 | |
11376 | if (TREE_ASM_WRITTEN (decl)) | |
11377 | return; | |
a94dbf2c | 11378 | |
2ad9852d | 11379 | TREE_ASM_WRITTEN (decl) = 1; |
54ba1f0d | 11380 | type_die = new_die (DW_TAG_typedef, context_die, decl); |
a94dbf2c | 11381 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 11382 | if (origin != NULL) |
a94dbf2c | 11383 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
11384 | else |
11385 | { | |
b3694847 | 11386 | tree type; |
2ad9852d | 11387 | |
a3f97cbb | 11388 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
11389 | if (DECL_ORIGINAL_TYPE (decl)) |
11390 | { | |
11391 | type = DECL_ORIGINAL_TYPE (decl); | |
62e3bf54 JM |
11392 | |
11393 | if (type == TREE_TYPE (decl)) | |
11394 | abort (); | |
11395 | else | |
11396 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
a94dbf2c JM |
11397 | } |
11398 | else | |
11399 | type = TREE_TYPE (decl); | |
2ad9852d | 11400 | |
a94dbf2c JM |
11401 | add_type_attribute (type_die, type, TREE_READONLY (decl), |
11402 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 11403 | } |
71dfc51f | 11404 | |
a3f97cbb | 11405 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 11406 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
11407 | } |
11408 | ||
11409 | /* Generate a type description DIE. */ | |
71dfc51f | 11410 | |
a3f97cbb | 11411 | static void |
7080f735 | 11412 | gen_type_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11413 | { |
348bb3c7 JM |
11414 | int need_pop; |
11415 | ||
71dfc51f RK |
11416 | if (type == NULL_TREE || type == error_mark_node) |
11417 | return; | |
a3f97cbb | 11418 | |
a94dbf2c JM |
11419 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
11420 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
556273e0 | 11421 | { |
5d7bed9d DJ |
11422 | if (TREE_ASM_WRITTEN (type)) |
11423 | return; | |
11424 | ||
29b91443 JM |
11425 | /* Prevent broken recursion; we can't hand off to the same type. */ |
11426 | if (DECL_ORIGINAL_TYPE (TYPE_NAME (type)) == type) | |
11427 | abort (); | |
11428 | ||
a94dbf2c JM |
11429 | TREE_ASM_WRITTEN (type) = 1; |
11430 | gen_decl_die (TYPE_NAME (type), context_die); | |
11431 | return; | |
11432 | } | |
11433 | ||
5d7bed9d DJ |
11434 | /* We are going to output a DIE to represent the unqualified version |
11435 | of this type (i.e. without any const or volatile qualifiers) so | |
11436 | get the main variant (i.e. the unqualified version) of this type | |
11437 | now. (Vectors are special because the debugging info is in the | |
11438 | cloned type itself). */ | |
11439 | if (TREE_CODE (type) != VECTOR_TYPE) | |
11440 | type = type_main_variant (type); | |
11441 | ||
11442 | if (TREE_ASM_WRITTEN (type)) | |
11443 | return; | |
11444 | ||
a3f97cbb JW |
11445 | switch (TREE_CODE (type)) |
11446 | { | |
11447 | case ERROR_MARK: | |
11448 | break; | |
11449 | ||
11450 | case POINTER_TYPE: | |
11451 | case REFERENCE_TYPE: | |
956d6950 JL |
11452 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
11453 | ensures that the gen_type_die recursion will terminate even if the | |
11454 | type is recursive. Recursive types are possible in Ada. */ | |
11455 | /* ??? We could perhaps do this for all types before the switch | |
11456 | statement. */ | |
11457 | TREE_ASM_WRITTEN (type) = 1; | |
11458 | ||
a3f97cbb | 11459 | /* For these types, all that is required is that we output a DIE (or a |
73c68f61 | 11460 | set of DIEs) to represent the "basis" type. */ |
a3f97cbb JW |
11461 | gen_type_die (TREE_TYPE (type), context_die); |
11462 | break; | |
11463 | ||
11464 | case OFFSET_TYPE: | |
556273e0 | 11465 | /* This code is used for C++ pointer-to-data-member types. |
71dfc51f | 11466 | Output a description of the relevant class type. */ |
a3f97cbb | 11467 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 11468 | |
a3f97cbb JW |
11469 | /* Output a description of the type of the object pointed to. */ |
11470 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 11471 | |
a3f97cbb | 11472 | /* Now output a DIE to represent this pointer-to-data-member type |
73c68f61 | 11473 | itself. */ |
a3f97cbb JW |
11474 | gen_ptr_to_mbr_type_die (type, context_die); |
11475 | break; | |
11476 | ||
11477 | case SET_TYPE: | |
11478 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
11479 | gen_set_type_die (type, context_die); | |
11480 | break; | |
11481 | ||
11482 | case FILE_TYPE: | |
11483 | gen_type_die (TREE_TYPE (type), context_die); | |
11484 | abort (); /* No way to represent these in Dwarf yet! */ | |
11485 | break; | |
11486 | ||
11487 | case FUNCTION_TYPE: | |
11488 | /* Force out return type (in case it wasn't forced out already). */ | |
11489 | gen_type_die (TREE_TYPE (type), context_die); | |
11490 | gen_subroutine_type_die (type, context_die); | |
11491 | break; | |
11492 | ||
11493 | case METHOD_TYPE: | |
11494 | /* Force out return type (in case it wasn't forced out already). */ | |
11495 | gen_type_die (TREE_TYPE (type), context_die); | |
11496 | gen_subroutine_type_die (type, context_die); | |
11497 | break; | |
11498 | ||
11499 | case ARRAY_TYPE: | |
11500 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
11501 | { | |
11502 | gen_type_die (TREE_TYPE (type), context_die); | |
11503 | gen_string_type_die (type, context_die); | |
11504 | } | |
11505 | else | |
71dfc51f | 11506 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
11507 | break; |
11508 | ||
4061f623 | 11509 | case VECTOR_TYPE: |
84f0ace0 | 11510 | gen_array_type_die (type, context_die); |
4061f623 BS |
11511 | break; |
11512 | ||
a3f97cbb JW |
11513 | case ENUMERAL_TYPE: |
11514 | case RECORD_TYPE: | |
11515 | case UNION_TYPE: | |
11516 | case QUAL_UNION_TYPE: | |
2ad9852d | 11517 | /* If this is a nested type whose containing class hasn't been written |
73c68f61 SS |
11518 | out yet, writing it out will cover this one, too. This does not apply |
11519 | to instantiations of member class templates; they need to be added to | |
11520 | the containing class as they are generated. FIXME: This hurts the | |
11521 | idea of combining type decls from multiple TUs, since we can't predict | |
11522 | what set of template instantiations we'll get. */ | |
a082c85a | 11523 | if (TYPE_CONTEXT (type) |
5f2f160c | 11524 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a082c85a | 11525 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
a94dbf2c JM |
11526 | { |
11527 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
11528 | ||
348bb3c7 | 11529 | if (TREE_ASM_WRITTEN (type)) |
a94dbf2c JM |
11530 | return; |
11531 | ||
11532 | /* If that failed, attach ourselves to the stub. */ | |
11533 | push_decl_scope (TYPE_CONTEXT (type)); | |
11534 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
348bb3c7 | 11535 | need_pop = 1; |
a94dbf2c | 11536 | } |
348bb3c7 JM |
11537 | else |
11538 | need_pop = 0; | |
a94dbf2c JM |
11539 | |
11540 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 11541 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 11542 | else |
273dbe67 | 11543 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 11544 | |
348bb3c7 | 11545 | if (need_pop) |
a94dbf2c JM |
11546 | pop_decl_scope (); |
11547 | ||
4b674448 | 11548 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
11549 | it up if it is ever completed. gen_*_type_die will set it for us |
11550 | when appropriate. */ | |
11551 | return; | |
a3f97cbb JW |
11552 | |
11553 | case VOID_TYPE: | |
11554 | case INTEGER_TYPE: | |
11555 | case REAL_TYPE: | |
11556 | case COMPLEX_TYPE: | |
11557 | case BOOLEAN_TYPE: | |
11558 | case CHAR_TYPE: | |
11559 | /* No DIEs needed for fundamental types. */ | |
11560 | break; | |
11561 | ||
11562 | case LANG_TYPE: | |
11563 | /* No Dwarf representation currently defined. */ | |
11564 | break; | |
11565 | ||
11566 | default: | |
11567 | abort (); | |
11568 | } | |
11569 | ||
11570 | TREE_ASM_WRITTEN (type) = 1; | |
11571 | } | |
11572 | ||
11573 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 11574 | |
a3f97cbb | 11575 | static void |
7080f735 | 11576 | gen_tagged_type_instantiation_die (tree type, dw_die_ref context_die) |
a3f97cbb | 11577 | { |
71dfc51f RK |
11578 | if (type == NULL_TREE || type == error_mark_node) |
11579 | return; | |
a3f97cbb | 11580 | |
38e01259 | 11581 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
11582 | this type (i.e. without any const or volatile qualifiers) so make sure |
11583 | that we have the main variant (i.e. the unqualified version) of this | |
11584 | type now. */ | |
bbc6ae08 | 11585 | if (type != type_main_variant (type)) |
3a88cbd1 | 11586 | abort (); |
a3f97cbb | 11587 | |
203588e7 | 11588 | /* Do not check TREE_ASM_WRITTEN (type) as it may not be set if this is |
bbc6ae08 | 11589 | an instance of an unresolved type. */ |
556273e0 | 11590 | |
a3f97cbb JW |
11591 | switch (TREE_CODE (type)) |
11592 | { | |
11593 | case ERROR_MARK: | |
11594 | break; | |
11595 | ||
11596 | case ENUMERAL_TYPE: | |
11597 | gen_inlined_enumeration_type_die (type, context_die); | |
11598 | break; | |
11599 | ||
11600 | case RECORD_TYPE: | |
11601 | gen_inlined_structure_type_die (type, context_die); | |
11602 | break; | |
11603 | ||
11604 | case UNION_TYPE: | |
11605 | case QUAL_UNION_TYPE: | |
11606 | gen_inlined_union_type_die (type, context_die); | |
11607 | break; | |
11608 | ||
11609 | default: | |
71dfc51f | 11610 | abort (); |
a3f97cbb JW |
11611 | } |
11612 | } | |
11613 | ||
11614 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
11615 | things which are local to the given block. */ | |
71dfc51f | 11616 | |
a3f97cbb | 11617 | static void |
7080f735 | 11618 | gen_block_die (tree stmt, dw_die_ref context_die, int depth) |
a3f97cbb | 11619 | { |
b3694847 SS |
11620 | int must_output_die = 0; |
11621 | tree origin; | |
11622 | tree decl; | |
11623 | enum tree_code origin_code; | |
a3f97cbb JW |
11624 | |
11625 | /* Ignore blocks never really used to make RTL. */ | |
1e7f092a JM |
11626 | if (stmt == NULL_TREE || !TREE_USED (stmt) |
11627 | || (!TREE_ASM_WRITTEN (stmt) && !BLOCK_ABSTRACT (stmt))) | |
71dfc51f | 11628 | return; |
a3f97cbb | 11629 | |
a20612aa RH |
11630 | /* If the block is one fragment of a non-contiguous block, do not |
11631 | process the variables, since they will have been done by the | |
11632 | origin block. Do process subblocks. */ | |
11633 | if (BLOCK_FRAGMENT_ORIGIN (stmt)) | |
11634 | { | |
11635 | tree sub; | |
11636 | ||
2ad9852d | 11637 | for (sub = BLOCK_SUBBLOCKS (stmt); sub; sub = BLOCK_CHAIN (sub)) |
a20612aa | 11638 | gen_block_die (sub, context_die, depth + 1); |
2ad9852d | 11639 | |
a20612aa RH |
11640 | return; |
11641 | } | |
11642 | ||
a3f97cbb JW |
11643 | /* Determine the "ultimate origin" of this block. This block may be an |
11644 | inlined instance of an inlined instance of inline function, so we have | |
11645 | to trace all of the way back through the origin chain to find out what | |
11646 | sort of node actually served as the original seed for the creation of | |
11647 | the current block. */ | |
11648 | origin = block_ultimate_origin (stmt); | |
11649 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
11650 | ||
11651 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
11652 | block. */ | |
11653 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
11654 | /* The outer scopes for inlinings *must* always be represented. We |
11655 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
11656 | must_output_die = 1; | |
a3f97cbb JW |
11657 | else |
11658 | { | |
11659 | /* In the case where the current block represents an inlining of the | |
73c68f61 SS |
11660 | "body block" of an inline function, we must *NOT* output any DIE for |
11661 | this block because we have already output a DIE to represent the whole | |
11662 | inlined function scope and the "body block" of any function doesn't | |
11663 | really represent a different scope according to ANSI C rules. So we | |
11664 | check here to make sure that this block does not represent a "body | |
11665 | block inlining" before trying to set the MUST_OUTPUT_DIE flag. */ | |
d7248bff | 11666 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
11667 | { |
11668 | /* Determine if this block directly contains any "significant" | |
11669 | local declarations which we will need to output DIEs for. */ | |
11670 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
11671 | /* We are not in terse mode so *any* local declaration counts |
11672 | as being a "significant" one. */ | |
11673 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 11674 | else |
71dfc51f RK |
11675 | /* We are in terse mode, so only local (nested) function |
11676 | definitions count as "significant" local declarations. */ | |
11677 | for (decl = BLOCK_VARS (stmt); | |
11678 | decl != NULL; decl = TREE_CHAIN (decl)) | |
11679 | if (TREE_CODE (decl) == FUNCTION_DECL | |
11680 | && DECL_INITIAL (decl)) | |
a3f97cbb | 11681 | { |
71dfc51f RK |
11682 | must_output_die = 1; |
11683 | break; | |
a3f97cbb | 11684 | } |
a3f97cbb JW |
11685 | } |
11686 | } | |
11687 | ||
11688 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
11689 | DIE for any block which contains no significant local declarations at | |
11690 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
11691 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
11692 | that in terse mode, our definition of what constitutes a "significant" | |
11693 | local declaration gets restricted to include only inlined function | |
11694 | instances and local (nested) function definitions. */ | |
11695 | if (must_output_die) | |
11696 | { | |
11697 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 11698 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 11699 | else |
71dfc51f | 11700 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
11701 | } |
11702 | else | |
d7248bff | 11703 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
11704 | } |
11705 | ||
11706 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 11707 | all of its sub-blocks. */ |
71dfc51f | 11708 | |
a3f97cbb | 11709 | static void |
7080f735 | 11710 | decls_for_scope (tree stmt, dw_die_ref context_die, int depth) |
a3f97cbb | 11711 | { |
b3694847 SS |
11712 | tree decl; |
11713 | tree subblocks; | |
71dfc51f | 11714 | |
a3f97cbb | 11715 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
11716 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
11717 | return; | |
11718 | ||
88dad228 JM |
11719 | /* Output the DIEs to represent all of the data objects and typedefs |
11720 | declared directly within this block but not within any nested | |
11721 | sub-blocks. Also, nested function and tag DIEs have been | |
11722 | generated with a parent of NULL; fix that up now. */ | |
2ad9852d | 11723 | for (decl = BLOCK_VARS (stmt); decl != NULL; decl = TREE_CHAIN (decl)) |
a3f97cbb | 11724 | { |
b3694847 | 11725 | dw_die_ref die; |
a94dbf2c | 11726 | |
88dad228 | 11727 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 11728 | die = lookup_decl_die (decl); |
88dad228 | 11729 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
11730 | die = lookup_type_die (TREE_TYPE (decl)); |
11731 | else | |
11732 | die = NULL; | |
11733 | ||
71dfc51f | 11734 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 11735 | add_child_die (context_die, die); |
88dad228 JM |
11736 | else |
11737 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
11738 | } |
11739 | ||
8cadae7e JM |
11740 | /* If we're at -g1, we're not interested in subblocks. */ |
11741 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
11742 | return; | |
11743 | ||
a3f97cbb JW |
11744 | /* Output the DIEs to represent all sub-blocks (and the items declared |
11745 | therein) of this block. */ | |
11746 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
11747 | subblocks != NULL; | |
11748 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 11749 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
11750 | } |
11751 | ||
a94dbf2c | 11752 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
11753 | |
11754 | static inline int | |
7080f735 | 11755 | is_redundant_typedef (tree decl) |
a94dbf2c JM |
11756 | { |
11757 | if (TYPE_DECL_IS_STUB (decl)) | |
11758 | return 1; | |
71dfc51f | 11759 | |
a94dbf2c JM |
11760 | if (DECL_ARTIFICIAL (decl) |
11761 | && DECL_CONTEXT (decl) | |
11762 | && is_tagged_type (DECL_CONTEXT (decl)) | |
11763 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
11764 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
11765 | /* Also ignore the artificial member typedef for the class name. */ | |
11766 | return 1; | |
71dfc51f | 11767 | |
a94dbf2c JM |
11768 | return 0; |
11769 | } | |
11770 | ||
a3f97cbb | 11771 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 11772 | |
a3f97cbb | 11773 | static void |
7080f735 | 11774 | gen_decl_die (tree decl, dw_die_ref context_die) |
a3f97cbb | 11775 | { |
b3694847 | 11776 | tree origin; |
71dfc51f | 11777 | |
f11c3043 | 11778 | if (DECL_P (decl) && DECL_IGNORED_P (decl)) |
71dfc51f | 11779 | return; |
a3f97cbb | 11780 | |
a3f97cbb JW |
11781 | switch (TREE_CODE (decl)) |
11782 | { | |
2ad9852d RK |
11783 | case ERROR_MARK: |
11784 | break; | |
11785 | ||
a3f97cbb | 11786 | case CONST_DECL: |
556273e0 | 11787 | /* The individual enumerators of an enum type get output when we output |
73c68f61 | 11788 | the Dwarf representation of the relevant enum type itself. */ |
a3f97cbb JW |
11789 | break; |
11790 | ||
11791 | case FUNCTION_DECL: | |
4edb7b60 JM |
11792 | /* Don't output any DIEs to represent mere function declarations, |
11793 | unless they are class members or explicit block externs. */ | |
11794 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
777ad4c2 | 11795 | && (current_function_decl == NULL_TREE || DECL_ARTIFICIAL (decl))) |
71dfc51f | 11796 | break; |
bdb669cb | 11797 | |
5daf7c0a JM |
11798 | /* If we're emitting a clone, emit info for the abstract instance. */ |
11799 | if (DECL_ORIGIN (decl) != decl) | |
11800 | dwarf2out_abstract_function (DECL_ABSTRACT_ORIGIN (decl)); | |
2ad9852d | 11801 | |
1cfdcc15 JM |
11802 | /* If we're emitting an out-of-line copy of an inline function, |
11803 | emit info for the abstract instance and set up to refer to it. */ | |
1bb17c21 JH |
11804 | else if (cgraph_function_possibly_inlined_p (decl) |
11805 | && ! DECL_ABSTRACT (decl) | |
5daf7c0a JM |
11806 | && ! class_scope_p (context_die) |
11807 | /* dwarf2out_abstract_function won't emit a die if this is just | |
11808 | a declaration. We must avoid setting DECL_ABSTRACT_ORIGIN in | |
11809 | that case, because that works only if we have a die. */ | |
11810 | && DECL_INITIAL (decl) != NULL_TREE) | |
1cfdcc15 | 11811 | { |
1edf43d6 | 11812 | dwarf2out_abstract_function (decl); |
1cfdcc15 JM |
11813 | set_decl_origin_self (decl); |
11814 | } | |
2ad9852d | 11815 | |
5daf7c0a JM |
11816 | /* Otherwise we're emitting the primary DIE for this decl. */ |
11817 | else if (debug_info_level > DINFO_LEVEL_TERSE) | |
a94dbf2c JM |
11818 | { |
11819 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
11820 | have described its return type. */ | |
11821 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
11822 | ||
2081603c JM |
11823 | /* And its virtual context. */ |
11824 | if (DECL_VINDEX (decl) != NULL_TREE) | |
11825 | gen_type_die (DECL_CONTEXT (decl), context_die); | |
11826 | ||
a94dbf2c JM |
11827 | /* And its containing type. */ |
11828 | origin = decl_class_context (decl); | |
71dfc51f | 11829 | if (origin != NULL_TREE) |
10a11b75 | 11830 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 11831 | } |
a3f97cbb JW |
11832 | |
11833 | /* Now output a DIE to represent the function itself. */ | |
11834 | gen_subprogram_die (decl, context_die); | |
11835 | break; | |
11836 | ||
11837 | case TYPE_DECL: | |
11838 | /* If we are in terse mode, don't generate any DIEs to represent any | |
73c68f61 | 11839 | actual typedefs. */ |
a3f97cbb | 11840 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 11841 | break; |
a3f97cbb | 11842 | |
2ad9852d | 11843 | /* In the special case of a TYPE_DECL node representing the declaration |
73c68f61 SS |
11844 | of some type tag, if the given TYPE_DECL is marked as having been |
11845 | instantiated from some other (original) TYPE_DECL node (e.g. one which | |
11846 | was generated within the original definition of an inline function) we | |
11847 | have to generate a special (abbreviated) DW_TAG_structure_type, | |
11848 | DW_TAG_union_type, or DW_TAG_enumeration_type DIE here. */ | |
2081603c | 11849 | if (TYPE_DECL_IS_STUB (decl) && decl_ultimate_origin (decl) != NULL_TREE) |
a3f97cbb JW |
11850 | { |
11851 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
11852 | break; | |
11853 | } | |
a3f97cbb | 11854 | |
a94dbf2c JM |
11855 | if (is_redundant_typedef (decl)) |
11856 | gen_type_die (TREE_TYPE (decl), context_die); | |
11857 | else | |
71dfc51f RK |
11858 | /* Output a DIE to represent the typedef itself. */ |
11859 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
11860 | break; |
11861 | ||
11862 | case LABEL_DECL: | |
11863 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 11864 | gen_label_die (decl, context_die); |
a3f97cbb JW |
11865 | break; |
11866 | ||
11867 | case VAR_DECL: | |
11868 | /* If we are in terse mode, don't generate any DIEs to represent any | |
73c68f61 | 11869 | variable declarations or definitions. */ |
a3f97cbb | 11870 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 11871 | break; |
a3f97cbb JW |
11872 | |
11873 | /* Output any DIEs that are needed to specify the type of this data | |
73c68f61 | 11874 | object. */ |
a3f97cbb JW |
11875 | gen_type_die (TREE_TYPE (decl), context_die); |
11876 | ||
a94dbf2c JM |
11877 | /* And its containing type. */ |
11878 | origin = decl_class_context (decl); | |
71dfc51f | 11879 | if (origin != NULL_TREE) |
10a11b75 | 11880 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 11881 | |
a3f97cbb | 11882 | /* Now output the DIE to represent the data object itself. This gets |
73c68f61 SS |
11883 | complicated because of the possibility that the VAR_DECL really |
11884 | represents an inlined instance of a formal parameter for an inline | |
11885 | function. */ | |
a3f97cbb | 11886 | origin = decl_ultimate_origin (decl); |
71dfc51f RK |
11887 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
11888 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 11889 | else |
71dfc51f | 11890 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
11891 | break; |
11892 | ||
11893 | case FIELD_DECL: | |
2ad9852d RK |
11894 | /* Ignore the nameless fields that are used to skip bits but handle C++ |
11895 | anonymous unions. */ | |
71dfc51f RK |
11896 | if (DECL_NAME (decl) != NULL_TREE |
11897 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
11898 | { |
11899 | gen_type_die (member_declared_type (decl), context_die); | |
11900 | gen_field_die (decl, context_die); | |
11901 | } | |
11902 | break; | |
11903 | ||
11904 | case PARM_DECL: | |
11905 | gen_type_die (TREE_TYPE (decl), context_die); | |
11906 | gen_formal_parameter_die (decl, context_die); | |
11907 | break; | |
11908 | ||
348bb3c7 JM |
11909 | case NAMESPACE_DECL: |
11910 | /* Ignore for now. */ | |
11911 | break; | |
11912 | ||
a3f97cbb | 11913 | default: |
ae0e5982 JM |
11914 | if ((int)TREE_CODE (decl) > NUM_TREE_CODES) |
11915 | /* Probably some frontend-internal decl. Assume we don't care. */ | |
11916 | break; | |
a3f97cbb JW |
11917 | abort (); |
11918 | } | |
a3f97cbb JW |
11919 | } |
11920 | \f | |
14a774a9 RK |
11921 | /* Add Ada "use" clause information for SGI Workshop debugger. */ |
11922 | ||
11923 | void | |
7080f735 | 11924 | dwarf2out_add_library_unit_info (const char *filename, const char *context_list) |
14a774a9 RK |
11925 | { |
11926 | unsigned int file_index; | |
11927 | ||
11928 | if (filename != NULL) | |
11929 | { | |
54ba1f0d | 11930 | dw_die_ref unit_die = new_die (DW_TAG_module, comp_unit_die, NULL); |
556273e0 | 11931 | tree context_list_decl |
14a774a9 RK |
11932 | = build_decl (LABEL_DECL, get_identifier (context_list), |
11933 | void_type_node); | |
11934 | ||
11935 | TREE_PUBLIC (context_list_decl) = TRUE; | |
11936 | add_name_attribute (unit_die, context_list); | |
981975b6 | 11937 | file_index = lookup_filename (filename); |
14a774a9 RK |
11938 | add_AT_unsigned (unit_die, DW_AT_decl_file, file_index); |
11939 | add_pubname (context_list_decl, unit_die); | |
11940 | } | |
11941 | } | |
11942 | ||
2ad9852d | 11943 | /* Output debug information for global decl DECL. Called from toplev.c after |
2b85879e | 11944 | compilation proper has finished. */ |
2ad9852d | 11945 | |
2b85879e | 11946 | static void |
7080f735 | 11947 | dwarf2out_global_decl (tree decl) |
2b85879e NB |
11948 | { |
11949 | /* Output DWARF2 information for file-scope tentative data object | |
2ad9852d RK |
11950 | declarations, file-scope (extern) function declarations (which had no |
11951 | corresponding body) and file-scope tagged type declarations and | |
11952 | definitions which have not yet been forced out. */ | |
2b85879e NB |
11953 | if (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)) |
11954 | dwarf2out_decl (decl); | |
11955 | } | |
11956 | ||
71dfc51f RK |
11957 | /* Write the debugging output for DECL. */ |
11958 | ||
a3f97cbb | 11959 | void |
7080f735 | 11960 | dwarf2out_decl (tree decl) |
a3f97cbb | 11961 | { |
b3694847 | 11962 | dw_die_ref context_die = comp_unit_die; |
88dad228 | 11963 | |
a3f97cbb JW |
11964 | switch (TREE_CODE (decl)) |
11965 | { | |
2ad9852d RK |
11966 | case ERROR_MARK: |
11967 | return; | |
11968 | ||
a3f97cbb | 11969 | case FUNCTION_DECL: |
556273e0 | 11970 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a |
73c68f61 SS |
11971 | builtin function. Explicit programmer-supplied declarations of |
11972 | these same functions should NOT be ignored however. */ | |
9765e357 | 11973 | if (DECL_EXTERNAL (decl) && DECL_BUILT_IN (decl)) |
b1ccbc24 | 11974 | return; |
a3f97cbb JW |
11975 | |
11976 | /* What we would really like to do here is to filter out all mere | |
73c68f61 SS |
11977 | file-scope declarations of file-scope functions which are never |
11978 | referenced later within this translation unit (and keep all of ones | |
11979 | that *are* referenced later on) but we aren't clairvoyant, so we have | |
11980 | no idea which functions will be referenced in the future (i.e. later | |
11981 | on within the current translation unit). So here we just ignore all | |
11982 | file-scope function declarations which are not also definitions. If | |
11983 | and when the debugger needs to know something about these functions, | |
11984 | it will have to hunt around and find the DWARF information associated | |
11985 | with the definition of the function. | |
2ad9852d RK |
11986 | |
11987 | We can't just check DECL_EXTERNAL to find out which FUNCTION_DECL | |
73c68f61 SS |
11988 | nodes represent definitions and which ones represent mere |
11989 | declarations. We have to check DECL_INITIAL instead. That's because | |
11990 | the C front-end supports some weird semantics for "extern inline" | |
11991 | function definitions. These can get inlined within the current | |
11992 | translation unit (an thus, we need to generate Dwarf info for their | |
11993 | abstract instances so that the Dwarf info for the concrete inlined | |
11994 | instances can have something to refer to) but the compiler never | |
11995 | generates any out-of-lines instances of such things (despite the fact | |
11996 | that they *are* definitions). | |
2ad9852d RK |
11997 | |
11998 | The important point is that the C front-end marks these "extern | |
11999 | inline" functions as DECL_EXTERNAL, but we need to generate DWARF for | |
12000 | them anyway. Note that the C++ front-end also plays some similar games | |
12001 | for inline function definitions appearing within include files which | |
12002 | also contain `#pragma interface' pragmas. */ | |
a3f97cbb | 12003 | if (DECL_INITIAL (decl) == NULL_TREE) |
b1ccbc24 | 12004 | return; |
88dad228 | 12005 | |
9c6cd30e JM |
12006 | /* If we're a nested function, initially use a parent of NULL; if we're |
12007 | a plain function, this will be fixed up in decls_for_scope. If | |
12008 | we're a method, it will be ignored, since we already have a DIE. */ | |
8cadae7e JM |
12009 | if (decl_function_context (decl) |
12010 | /* But if we're in terse mode, we don't care about scope. */ | |
12011 | && debug_info_level > DINFO_LEVEL_TERSE) | |
9c6cd30e | 12012 | context_die = NULL; |
a3f97cbb JW |
12013 | break; |
12014 | ||
12015 | case VAR_DECL: | |
556273e0 | 12016 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object |
73c68f61 SS |
12017 | declaration and if the declaration was never even referenced from |
12018 | within this entire compilation unit. We suppress these DIEs in | |
12019 | order to save space in the .debug section (by eliminating entries | |
12020 | which are probably useless). Note that we must not suppress | |
12021 | block-local extern declarations (whether used or not) because that | |
12022 | would screw-up the debugger's name lookup mechanism and cause it to | |
12023 | miss things which really ought to be in scope at a given point. */ | |
a3f97cbb | 12024 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) |
71dfc51f | 12025 | return; |
a3f97cbb JW |
12026 | |
12027 | /* If we are in terse mode, don't generate any DIEs to represent any | |
73c68f61 | 12028 | variable declarations or definitions. */ |
a3f97cbb | 12029 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 12030 | return; |
a3f97cbb JW |
12031 | break; |
12032 | ||
12033 | case TYPE_DECL: | |
57fb7689 JM |
12034 | /* Don't emit stubs for types unless they are needed by other DIEs. */ |
12035 | if (TYPE_DECL_SUPPRESS_DEBUG (decl)) | |
12036 | return; | |
12037 | ||
a3f97cbb | 12038 | /* Don't bother trying to generate any DIEs to represent any of the |
73c68f61 | 12039 | normal built-in types for the language we are compiling. */ |
f31686a3 | 12040 | if (DECL_SOURCE_LINE (decl) == 0) |
a94dbf2c JM |
12041 | { |
12042 | /* OK, we need to generate one for `bool' so GDB knows what type | |
73c68f61 | 12043 | comparisons have. */ |
a94dbf2c JM |
12044 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) |
12045 | == DW_LANG_C_plus_plus) | |
f11c3043 RK |
12046 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE |
12047 | && ! DECL_IGNORED_P (decl)) | |
a94dbf2c | 12048 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); |
71dfc51f | 12049 | |
a94dbf2c JM |
12050 | return; |
12051 | } | |
a3f97cbb | 12052 | |
88dad228 | 12053 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 12054 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 12055 | return; |
88dad228 JM |
12056 | |
12057 | /* If we're a function-scope tag, initially use a parent of NULL; | |
12058 | this will be fixed up in decls_for_scope. */ | |
12059 | if (decl_function_context (decl)) | |
3f76745e | 12060 | context_die = NULL; |
88dad228 | 12061 | |
a3f97cbb JW |
12062 | break; |
12063 | ||
12064 | default: | |
12065 | return; | |
12066 | } | |
12067 | ||
88dad228 | 12068 | gen_decl_die (decl, context_die); |
a3f97cbb JW |
12069 | } |
12070 | ||
12071 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
12072 | a lexical block. */ | |
71dfc51f | 12073 | |
a5a42b92 | 12074 | static void |
7080f735 AJ |
12075 | dwarf2out_begin_block (unsigned int line ATTRIBUTE_UNUSED, |
12076 | unsigned int blocknum) | |
a3f97cbb | 12077 | { |
a3f97cbb | 12078 | function_section (current_function_decl); |
8215347e | 12079 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
12080 | } |
12081 | ||
12082 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
12083 | lexical block. */ | |
71dfc51f | 12084 | |
a5a42b92 | 12085 | static void |
7080f735 | 12086 | dwarf2out_end_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int blocknum) |
a3f97cbb | 12087 | { |
a3f97cbb | 12088 | function_section (current_function_decl); |
8215347e | 12089 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
12090 | } |
12091 | ||
64b59a80 JM |
12092 | /* Returns nonzero if it is appropriate not to emit any debugging |
12093 | information for BLOCK, because it doesn't contain any instructions. | |
fcd7f76b | 12094 | |
64b59a80 JM |
12095 | Don't allow this for blocks with nested functions or local classes |
12096 | as we would end up with orphans, and in the presence of scheduling | |
12097 | we may end up calling them anyway. */ | |
12098 | ||
e1772ac0 | 12099 | static bool |
7080f735 | 12100 | dwarf2out_ignore_block (tree block) |
fcd7f76b JM |
12101 | { |
12102 | tree decl; | |
2ad9852d | 12103 | |
fcd7f76b | 12104 | for (decl = BLOCK_VARS (block); decl; decl = TREE_CHAIN (decl)) |
64b59a80 JM |
12105 | if (TREE_CODE (decl) == FUNCTION_DECL |
12106 | || (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl))) | |
12107 | return 0; | |
2ad9852d | 12108 | |
64b59a80 | 12109 | return 1; |
fcd7f76b JM |
12110 | } |
12111 | ||
2ad9852d | 12112 | /* Lookup FILE_NAME (in the list of filenames that we know about here in |
9a666dda | 12113 | dwarf2out.c) and return its "index". The index of each (known) filename is |
2ad9852d RK |
12114 | just a unique number which is associated with only that one filename. We |
12115 | need such numbers for the sake of generating labels (in the .debug_sfnames | |
12116 | section) and references to those files numbers (in the .debug_srcinfo | |
12117 | and.debug_macinfo sections). If the filename given as an argument is not | |
12118 | found in our current list, add it to the list and assign it the next | |
12119 | available unique index number. In order to speed up searches, we remember | |
12120 | the index of the filename was looked up last. This handles the majority of | |
12121 | all searches. */ | |
71dfc51f | 12122 | |
a3f97cbb | 12123 | static unsigned |
7080f735 | 12124 | lookup_filename (const char *file_name) |
a3f97cbb | 12125 | { |
c4274b22 RH |
12126 | size_t i, n; |
12127 | char *save_file_name; | |
a3f97cbb | 12128 | |
2e18bbae RH |
12129 | /* Check to see if the file name that was searched on the previous |
12130 | call matches this file name. If so, return the index. */ | |
c4274b22 RH |
12131 | if (file_table_last_lookup_index != 0) |
12132 | { | |
12133 | const char *last | |
12134 | = VARRAY_CHAR_PTR (file_table, file_table_last_lookup_index); | |
12135 | if (strcmp (file_name, last) == 0) | |
73c68f61 | 12136 | return file_table_last_lookup_index; |
c4274b22 | 12137 | } |
a3f97cbb JW |
12138 | |
12139 | /* Didn't match the previous lookup, search the table */ | |
c4274b22 RH |
12140 | n = VARRAY_ACTIVE_SIZE (file_table); |
12141 | for (i = 1; i < n; i++) | |
12142 | if (strcmp (file_name, VARRAY_CHAR_PTR (file_table, i)) == 0) | |
71dfc51f | 12143 | { |
c4274b22 | 12144 | file_table_last_lookup_index = i; |
71dfc51f RK |
12145 | return i; |
12146 | } | |
a3f97cbb | 12147 | |
71dfc51f | 12148 | /* Add the new entry to the end of the filename table. */ |
c4274b22 RH |
12149 | file_table_last_lookup_index = n; |
12150 | save_file_name = (char *) ggc_strdup (file_name); | |
12151 | VARRAY_PUSH_CHAR_PTR (file_table, save_file_name); | |
73c68f61 | 12152 | VARRAY_PUSH_UINT (file_table_emitted, 0); |
2e18bbae | 12153 | |
73c68f61 SS |
12154 | return i; |
12155 | } | |
12156 | ||
12157 | static int | |
7080f735 | 12158 | maybe_emit_file (int fileno) |
73c68f61 | 12159 | { |
73c68f61 | 12160 | if (DWARF2_ASM_LINE_DEBUG_INFO && fileno > 0) |
211a0cbe | 12161 | { |
73c68f61 SS |
12162 | if (!VARRAY_UINT (file_table_emitted, fileno)) |
12163 | { | |
12164 | VARRAY_UINT (file_table_emitted, fileno) = ++emitcount; | |
12165 | fprintf (asm_out_file, "\t.file %u ", | |
12166 | VARRAY_UINT (file_table_emitted, fileno)); | |
12167 | output_quoted_string (asm_out_file, | |
12168 | VARRAY_CHAR_PTR (file_table, fileno)); | |
12169 | fputc ('\n', asm_out_file); | |
12170 | } | |
12171 | return VARRAY_UINT (file_table_emitted, fileno); | |
211a0cbe | 12172 | } |
73c68f61 SS |
12173 | else |
12174 | return fileno; | |
2e18bbae RH |
12175 | } |
12176 | ||
12177 | static void | |
7080f735 | 12178 | init_file_table (void) |
2e18bbae RH |
12179 | { |
12180 | /* Allocate the initial hunk of the file_table. */ | |
c4274b22 | 12181 | VARRAY_CHAR_PTR_INIT (file_table, 64, "file_table"); |
73c68f61 | 12182 | VARRAY_UINT_INIT (file_table_emitted, 64, "file_table_emitted"); |
71dfc51f | 12183 | |
2e18bbae | 12184 | /* Skip the first entry - file numbers begin at 1. */ |
c4274b22 | 12185 | VARRAY_PUSH_CHAR_PTR (file_table, NULL); |
73c68f61 | 12186 | VARRAY_PUSH_UINT (file_table_emitted, 0); |
c4274b22 | 12187 | file_table_last_lookup_index = 0; |
a3f97cbb JW |
12188 | } |
12189 | ||
12190 | /* Output a label to mark the beginning of a source code line entry | |
12191 | and record information relating to this source line, in | |
12192 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 12193 | |
e2a12aca | 12194 | static void |
7080f735 | 12195 | dwarf2out_source_line (unsigned int line, const char *filename) |
a3f97cbb | 12196 | { |
7bf6b23d JM |
12197 | if (debug_info_level >= DINFO_LEVEL_NORMAL |
12198 | && line != 0) | |
a3f97cbb JW |
12199 | { |
12200 | function_section (current_function_decl); | |
a3f97cbb | 12201 | |
8aaf55ac JM |
12202 | /* If requested, emit something human-readable. */ |
12203 | if (flag_debug_asm) | |
12204 | fprintf (asm_out_file, "\t%s %s:%d\n", ASM_COMMENT_START, | |
12205 | filename, line); | |
12206 | ||
b2244e22 JW |
12207 | if (DWARF2_ASM_LINE_DEBUG_INFO) |
12208 | { | |
981975b6 | 12209 | unsigned file_num = lookup_filename (filename); |
b2244e22 | 12210 | |
73c68f61 SS |
12211 | file_num = maybe_emit_file (file_num); |
12212 | ||
981975b6 | 12213 | /* Emit the .loc directive understood by GNU as. */ |
2e18bbae | 12214 | fprintf (asm_out_file, "\t.loc %d %d 0\n", file_num, line); |
b2244e22 JW |
12215 | |
12216 | /* Indicate that line number info exists. */ | |
2ad9852d | 12217 | line_info_table_in_use++; |
b2244e22 JW |
12218 | |
12219 | /* Indicate that multiple line number tables exist. */ | |
12220 | if (DECL_SECTION_NAME (current_function_decl)) | |
2ad9852d | 12221 | separate_line_info_table_in_use++; |
b2244e22 JW |
12222 | } |
12223 | else if (DECL_SECTION_NAME (current_function_decl)) | |
a3f97cbb | 12224 | { |
b3694847 | 12225 | dw_separate_line_info_ref line_info; |
4977bab6 | 12226 | (*targetm.asm_out.internal_label) (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
5c90448c | 12227 | separate_line_info_table_in_use); |
e90b62db JM |
12228 | |
12229 | /* expand the line info table if necessary */ | |
12230 | if (separate_line_info_table_in_use | |
12231 | == separate_line_info_table_allocated) | |
12232 | { | |
12233 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
12234 | separate_line_info_table | |
703ad42b | 12235 | = ggc_realloc (separate_line_info_table, |
17211ab5 GK |
12236 | separate_line_info_table_allocated |
12237 | * sizeof (dw_separate_line_info_entry)); | |
703ad42b KG |
12238 | memset (separate_line_info_table |
12239 | + separate_line_info_table_in_use, | |
17211ab5 | 12240 | 0, |
7080f735 | 12241 | (LINE_INFO_TABLE_INCREMENT |
17211ab5 | 12242 | * sizeof (dw_separate_line_info_entry))); |
e90b62db | 12243 | } |
71dfc51f RK |
12244 | |
12245 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
12246 | line_info |
12247 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
981975b6 | 12248 | line_info->dw_file_num = lookup_filename (filename); |
e90b62db | 12249 | line_info->dw_line_num = line; |
df696a75 | 12250 | line_info->function = current_function_funcdef_no; |
e90b62db JM |
12251 | } |
12252 | else | |
12253 | { | |
b3694847 | 12254 | dw_line_info_ref line_info; |
71dfc51f | 12255 | |
4977bab6 | 12256 | (*targetm.asm_out.internal_label) (asm_out_file, LINE_CODE_LABEL, |
5c90448c | 12257 | line_info_table_in_use); |
e90b62db | 12258 | |
71dfc51f | 12259 | /* Expand the line info table if necessary. */ |
e90b62db JM |
12260 | if (line_info_table_in_use == line_info_table_allocated) |
12261 | { | |
12262 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
12263 | line_info_table | |
17211ab5 GK |
12264 | = ggc_realloc (line_info_table, |
12265 | (line_info_table_allocated | |
12266 | * sizeof (dw_line_info_entry))); | |
12267 | memset (line_info_table + line_info_table_in_use, 0, | |
12268 | LINE_INFO_TABLE_INCREMENT * sizeof (dw_line_info_entry)); | |
e90b62db | 12269 | } |
71dfc51f RK |
12270 | |
12271 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db | 12272 | line_info = &line_info_table[line_info_table_in_use++]; |
981975b6 | 12273 | line_info->dw_file_num = lookup_filename (filename); |
e90b62db | 12274 | line_info->dw_line_num = line; |
a3f97cbb | 12275 | } |
a3f97cbb JW |
12276 | } |
12277 | } | |
12278 | ||
30f7a378 | 12279 | /* Record the beginning of a new source file. */ |
71dfc51f | 12280 | |
7f905405 | 12281 | static void |
7080f735 | 12282 | dwarf2out_start_source_file (unsigned int lineno, const char *filename) |
a3f97cbb | 12283 | { |
8a7a6f4d | 12284 | if (flag_eliminate_dwarf2_dups) |
881c6935 JM |
12285 | { |
12286 | /* Record the beginning of the file for break_out_includes. */ | |
cc0017a9 ZD |
12287 | dw_die_ref bincl_die; |
12288 | ||
12289 | bincl_die = new_die (DW_TAG_GNU_BINCL, comp_unit_die, NULL); | |
881c6935 JM |
12290 | add_AT_string (bincl_die, DW_AT_name, filename); |
12291 | } | |
2ad9852d | 12292 | |
84a5b4f8 DB |
12293 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12294 | { | |
715bdd29 | 12295 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 | 12296 | dw2_asm_output_data (1, DW_MACINFO_start_file, "Start new file"); |
7c262518 RH |
12297 | dw2_asm_output_data_uleb128 (lineno, "Included from line number %d", |
12298 | lineno); | |
73c68f61 | 12299 | maybe_emit_file (lookup_filename (filename)); |
7c262518 RH |
12300 | dw2_asm_output_data_uleb128 (lookup_filename (filename), |
12301 | "Filename we just started"); | |
84a5b4f8 | 12302 | } |
a3f97cbb JW |
12303 | } |
12304 | ||
cc260610 | 12305 | /* Record the end of a source file. */ |
71dfc51f | 12306 | |
7f905405 | 12307 | static void |
7080f735 | 12308 | dwarf2out_end_source_file (unsigned int lineno ATTRIBUTE_UNUSED) |
a3f97cbb | 12309 | { |
881c6935 | 12310 | if (flag_eliminate_dwarf2_dups) |
2ad9852d | 12311 | /* Record the end of the file for break_out_includes. */ |
54ba1f0d | 12312 | new_die (DW_TAG_GNU_EINCL, comp_unit_die, NULL); |
2ad9852d | 12313 | |
84a5b4f8 DB |
12314 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12315 | { | |
715bdd29 | 12316 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12317 | dw2_asm_output_data (1, DW_MACINFO_end_file, "End file"); |
12318 | } | |
a3f97cbb JW |
12319 | } |
12320 | ||
cc260610 | 12321 | /* Called from debug_define in toplev.c. The `buffer' parameter contains |
a3f97cbb JW |
12322 | the tail part of the directive line, i.e. the part which is past the |
12323 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 12324 | |
7f905405 | 12325 | static void |
7080f735 AJ |
12326 | dwarf2out_define (unsigned int lineno ATTRIBUTE_UNUSED, |
12327 | const char *buffer ATTRIBUTE_UNUSED) | |
a3f97cbb | 12328 | { |
84a5b4f8 DB |
12329 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12330 | { | |
715bdd29 | 12331 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12332 | dw2_asm_output_data (1, DW_MACINFO_define, "Define macro"); |
12333 | dw2_asm_output_data_uleb128 (lineno, "At line number %d", lineno); | |
12334 | dw2_asm_output_nstring (buffer, -1, "The macro"); | |
12335 | } | |
a3f97cbb JW |
12336 | } |
12337 | ||
cc260610 | 12338 | /* Called from debug_undef in toplev.c. The `buffer' parameter contains |
a3f97cbb JW |
12339 | the tail part of the directive line, i.e. the part which is past the |
12340 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 12341 | |
7f905405 | 12342 | static void |
7080f735 AJ |
12343 | dwarf2out_undef (unsigned int lineno ATTRIBUTE_UNUSED, |
12344 | const char *buffer ATTRIBUTE_UNUSED) | |
a3f97cbb | 12345 | { |
84a5b4f8 DB |
12346 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12347 | { | |
715bdd29 | 12348 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12349 | dw2_asm_output_data (1, DW_MACINFO_undef, "Undefine macro"); |
12350 | dw2_asm_output_data_uleb128 (lineno, "At line number %d", lineno); | |
12351 | dw2_asm_output_nstring (buffer, -1, "The macro"); | |
12352 | } | |
a3f97cbb JW |
12353 | } |
12354 | ||
12355 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 12356 | |
a51d908e | 12357 | static void |
7080f735 | 12358 | dwarf2out_init (const char *filename ATTRIBUTE_UNUSED) |
a3f97cbb | 12359 | { |
acc187f5 RH |
12360 | init_file_table (); |
12361 | ||
a3f97cbb | 12362 | /* Allocate the initial hunk of the decl_die_table. */ |
7080f735 | 12363 | decl_die_table = ggc_alloc_cleared (DECL_DIE_TABLE_INCREMENT |
17211ab5 | 12364 | * sizeof (dw_die_ref)); |
a3f97cbb JW |
12365 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
12366 | decl_die_table_in_use = 0; | |
12367 | ||
12368 | /* Allocate the initial hunk of the decl_scope_table. */ | |
244a4af0 | 12369 | VARRAY_TREE_INIT (decl_scope_table, 256, "decl_scope_table"); |
a3f97cbb JW |
12370 | |
12371 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
17211ab5 GK |
12372 | abbrev_die_table = ggc_alloc_cleared (ABBREV_DIE_TABLE_INCREMENT |
12373 | * sizeof (dw_die_ref)); | |
a3f97cbb | 12374 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 12375 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
12376 | abbrev_die_table_in_use = 1; |
12377 | ||
12378 | /* Allocate the initial hunk of the line_info_table. */ | |
17211ab5 GK |
12379 | line_info_table = ggc_alloc_cleared (LINE_INFO_TABLE_INCREMENT |
12380 | * sizeof (dw_line_info_entry)); | |
a3f97cbb | 12381 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
2ad9852d | 12382 | |
71dfc51f | 12383 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
12384 | line_info_table_in_use = 1; |
12385 | ||
556273e0 | 12386 | /* Generate the initial DIE for the .debug section. Note that the (string) |
a3f97cbb | 12387 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE |
556273e0 | 12388 | will (typically) be a relative pathname and that this pathname should be |
a3f97cbb | 12389 | taken as being relative to the directory from which the compiler was |
c4274b22 RH |
12390 | invoked when the given (base) source file was compiled. We will fill |
12391 | in this value in dwarf2out_finish. */ | |
12392 | comp_unit_die = gen_compile_unit_die (NULL); | |
a3f97cbb | 12393 | |
244a4af0 | 12394 | VARRAY_TREE_INIT (incomplete_types, 64, "incomplete_types"); |
244a4af0 | 12395 | |
1f8f4a0b | 12396 | VARRAY_RTX_INIT (used_rtx_varray, 32, "used_rtx_varray"); |
1865dbb5 | 12397 | |
5c90448c | 12398 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
9d2f2c45 RH |
12399 | ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label, |
12400 | DEBUG_ABBREV_SECTION_LABEL, 0); | |
b366352b MM |
12401 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
12402 | ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0); | |
12403 | else | |
f99ffb60 | 12404 | strcpy (text_section_label, stripattributes (TEXT_SECTION_NAME)); |
2ad9852d | 12405 | |
556273e0 | 12406 | ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label, |
8b790721 | 12407 | DEBUG_INFO_SECTION_LABEL, 0); |
556273e0 | 12408 | ASM_GENERATE_INTERNAL_LABEL (debug_line_section_label, |
8b790721 | 12409 | DEBUG_LINE_SECTION_LABEL, 0); |
2bee6045 JJ |
12410 | ASM_GENERATE_INTERNAL_LABEL (ranges_section_label, |
12411 | DEBUG_RANGES_SECTION_LABEL, 0); | |
715bdd29 | 12412 | named_section_flags (DEBUG_ABBREV_SECTION, SECTION_DEBUG); |
8b790721 | 12413 | ASM_OUTPUT_LABEL (asm_out_file, abbrev_section_label); |
715bdd29 | 12414 | named_section_flags (DEBUG_INFO_SECTION, SECTION_DEBUG); |
8b790721 | 12415 | ASM_OUTPUT_LABEL (asm_out_file, debug_info_section_label); |
715bdd29 | 12416 | named_section_flags (DEBUG_LINE_SECTION, SECTION_DEBUG); |
8b790721 | 12417 | ASM_OUTPUT_LABEL (asm_out_file, debug_line_section_label); |
2ad9852d | 12418 | |
84a5b4f8 DB |
12419 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12420 | { | |
715bdd29 | 12421 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12422 | ASM_GENERATE_INTERNAL_LABEL (macinfo_section_label, |
12423 | DEBUG_MACINFO_SECTION_LABEL, 0); | |
12424 | ASM_OUTPUT_LABEL (asm_out_file, macinfo_section_label); | |
12425 | } | |
7c262518 RH |
12426 | |
12427 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) | |
12428 | { | |
12429 | text_section (); | |
12430 | ASM_OUTPUT_LABEL (asm_out_file, text_section_label); | |
12431 | } | |
a3f97cbb JW |
12432 | } |
12433 | ||
9eb4015a JJ |
12434 | /* A helper function for dwarf2out_finish called through |
12435 | ht_forall. Emit one queued .debug_str string. */ | |
12436 | ||
12437 | static int | |
7080f735 | 12438 | output_indirect_string (void **h, void *v ATTRIBUTE_UNUSED) |
9eb4015a | 12439 | { |
17211ab5 | 12440 | struct indirect_string_node *node = (struct indirect_string_node *) *h; |
9eb4015a | 12441 | |
9eb4015a JJ |
12442 | if (node->form == DW_FORM_strp) |
12443 | { | |
12444 | named_section_flags (DEBUG_STR_SECTION, DEBUG_STR_SECTION_FLAGS); | |
12445 | ASM_OUTPUT_LABEL (asm_out_file, node->label); | |
17211ab5 | 12446 | assemble_string (node->str, strlen (node->str) + 1); |
9eb4015a | 12447 | } |
2ad9852d | 12448 | |
9eb4015a JJ |
12449 | return 1; |
12450 | } | |
12451 | ||
73c68f61 SS |
12452 | |
12453 | ||
12454 | /* Clear the marks for a die and its children. | |
3dc575ff | 12455 | Be cool if the mark isn't set. */ |
73c68f61 SS |
12456 | |
12457 | static void | |
7080f735 | 12458 | prune_unmark_dies (dw_die_ref die) |
73c68f61 SS |
12459 | { |
12460 | dw_die_ref c; | |
12461 | die->die_mark = 0; | |
12462 | for (c = die->die_child; c; c = c->die_sib) | |
12463 | prune_unmark_dies (c); | |
12464 | } | |
12465 | ||
12466 | ||
12467 | /* Given DIE that we're marking as used, find any other dies | |
12468 | it references as attributes and mark them as used. */ | |
12469 | ||
12470 | static void | |
7080f735 | 12471 | prune_unused_types_walk_attribs (dw_die_ref die) |
73c68f61 SS |
12472 | { |
12473 | dw_attr_ref a; | |
12474 | ||
12475 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
12476 | { | |
12477 | if (a->dw_attr_val.val_class == dw_val_class_die_ref) | |
12478 | { | |
12479 | /* A reference to another DIE. | |
12480 | Make sure that it will get emitted. */ | |
12481 | prune_unused_types_mark (a->dw_attr_val.v.val_die_ref.die, 1); | |
12482 | } | |
12483 | else if (a->dw_attr == DW_AT_decl_file) | |
12484 | { | |
12485 | /* A reference to a file. Make sure the file name is emitted. */ | |
12486 | a->dw_attr_val.v.val_unsigned = | |
12487 | maybe_emit_file (a->dw_attr_val.v.val_unsigned); | |
12488 | } | |
12489 | } | |
12490 | } | |
12491 | ||
12492 | ||
12493 | /* Mark DIE as being used. If DOKIDS is true, then walk down | |
12494 | to DIE's children. */ | |
12495 | ||
12496 | static void | |
7080f735 | 12497 | prune_unused_types_mark (dw_die_ref die, int dokids) |
73c68f61 SS |
12498 | { |
12499 | dw_die_ref c; | |
12500 | ||
12501 | if (die->die_mark == 0) | |
12502 | { | |
12503 | /* We haven't done this node yet. Mark it as used. */ | |
12504 | die->die_mark = 1; | |
12505 | ||
12506 | /* We also have to mark its parents as used. | |
12507 | (But we don't want to mark our parents' kids due to this.) */ | |
12508 | if (die->die_parent) | |
12509 | prune_unused_types_mark (die->die_parent, 0); | |
12510 | ||
12511 | /* Mark any referenced nodes. */ | |
12512 | prune_unused_types_walk_attribs (die); | |
12513 | } | |
12514 | ||
12515 | if (dokids && die->die_mark != 2) | |
12516 | { | |
12517 | /* We need to walk the children, but haven't done so yet. | |
12518 | Remember that we've walked the kids. */ | |
12519 | die->die_mark = 2; | |
12520 | ||
12521 | /* Walk them. */ | |
12522 | for (c = die->die_child; c; c = c->die_sib) | |
12523 | { | |
12524 | /* If this is an array type, we need to make sure our | |
3dc575ff | 12525 | kids get marked, even if they're types. */ |
73c68f61 SS |
12526 | if (die->die_tag == DW_TAG_array_type) |
12527 | prune_unused_types_mark (c, 1); | |
12528 | else | |
12529 | prune_unused_types_walk (c); | |
12530 | } | |
12531 | } | |
12532 | } | |
12533 | ||
12534 | ||
12535 | /* Walk the tree DIE and mark types that we actually use. */ | |
12536 | ||
12537 | static void | |
7080f735 | 12538 | prune_unused_types_walk (dw_die_ref die) |
73c68f61 SS |
12539 | { |
12540 | dw_die_ref c; | |
12541 | ||
12542 | /* Don't do anything if this node is already marked. */ | |
12543 | if (die->die_mark) | |
12544 | return; | |
12545 | ||
12546 | switch (die->die_tag) { | |
12547 | case DW_TAG_const_type: | |
12548 | case DW_TAG_packed_type: | |
12549 | case DW_TAG_pointer_type: | |
12550 | case DW_TAG_reference_type: | |
12551 | case DW_TAG_volatile_type: | |
12552 | case DW_TAG_typedef: | |
12553 | case DW_TAG_array_type: | |
12554 | case DW_TAG_structure_type: | |
12555 | case DW_TAG_union_type: | |
12556 | case DW_TAG_class_type: | |
12557 | case DW_TAG_friend: | |
12558 | case DW_TAG_variant_part: | |
12559 | case DW_TAG_enumeration_type: | |
12560 | case DW_TAG_subroutine_type: | |
12561 | case DW_TAG_string_type: | |
12562 | case DW_TAG_set_type: | |
12563 | case DW_TAG_subrange_type: | |
12564 | case DW_TAG_ptr_to_member_type: | |
12565 | case DW_TAG_file_type: | |
12566 | /* It's a type node --- don't mark it. */ | |
12567 | return; | |
12568 | ||
12569 | default: | |
12570 | /* Mark everything else. */ | |
12571 | break; | |
12572 | } | |
12573 | ||
12574 | die->die_mark = 1; | |
12575 | ||
12576 | /* Now, mark any dies referenced from here. */ | |
12577 | prune_unused_types_walk_attribs (die); | |
12578 | ||
12579 | /* Mark children. */ | |
12580 | for (c = die->die_child; c; c = c->die_sib) | |
12581 | prune_unused_types_walk (c); | |
12582 | } | |
12583 | ||
12584 | ||
12585 | /* Remove from the tree DIE any dies that aren't marked. */ | |
12586 | ||
12587 | static void | |
7080f735 | 12588 | prune_unused_types_prune (dw_die_ref die) |
73c68f61 SS |
12589 | { |
12590 | dw_die_ref c, p, n; | |
12591 | if (!die->die_mark) | |
12592 | abort(); | |
12593 | ||
12594 | p = NULL; | |
12595 | for (c = die->die_child; c; c = n) | |
12596 | { | |
12597 | n = c->die_sib; | |
12598 | if (c->die_mark) | |
12599 | { | |
12600 | prune_unused_types_prune (c); | |
12601 | p = c; | |
12602 | } | |
12603 | else | |
12604 | { | |
12605 | if (p) | |
12606 | p->die_sib = n; | |
12607 | else | |
12608 | die->die_child = n; | |
12609 | free_die (c); | |
12610 | } | |
12611 | } | |
12612 | } | |
12613 | ||
12614 | ||
12615 | /* Remove dies representing declarations that we never use. */ | |
12616 | ||
12617 | static void | |
7080f735 | 12618 | prune_unused_types (void) |
73c68f61 SS |
12619 | { |
12620 | unsigned int i; | |
12621 | limbo_die_node *node; | |
12622 | ||
12623 | /* Clear all the marks. */ | |
12624 | prune_unmark_dies (comp_unit_die); | |
12625 | for (node = limbo_die_list; node; node = node->next) | |
12626 | prune_unmark_dies (node->die); | |
12627 | ||
12628 | /* Set the mark on nodes that are actually used. */ | |
12629 | prune_unused_types_walk (comp_unit_die); | |
12630 | for (node = limbo_die_list; node; node = node->next) | |
12631 | prune_unused_types_walk (node->die); | |
12632 | ||
12633 | /* Also set the mark on nodes referenced from the | |
12634 | pubname_table or arange_table. */ | |
6a87d634 RS |
12635 | for (i = 0; i < pubname_table_in_use; i++) |
12636 | prune_unused_types_mark (pubname_table[i].die, 1); | |
12637 | for (i = 0; i < arange_table_in_use; i++) | |
12638 | prune_unused_types_mark (arange_table[i], 1); | |
73c68f61 SS |
12639 | |
12640 | /* Get rid of nodes that aren't marked. */ | |
12641 | prune_unused_types_prune (comp_unit_die); | |
12642 | for (node = limbo_die_list; node; node = node->next) | |
12643 | prune_unused_types_prune (node->die); | |
12644 | ||
12645 | /* Leave the marks clear. */ | |
12646 | prune_unmark_dies (comp_unit_die); | |
12647 | for (node = limbo_die_list; node; node = node->next) | |
12648 | prune_unmark_dies (node->die); | |
12649 | } | |
12650 | ||
a3f97cbb JW |
12651 | /* Output stuff that dwarf requires at the end of every file, |
12652 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 12653 | |
a51d908e | 12654 | static void |
7080f735 | 12655 | dwarf2out_finish (const char *filename) |
a3f97cbb | 12656 | { |
ef76d03b | 12657 | limbo_die_node *node, *next_node; |
ae0ed63a | 12658 | dw_die_ref die = 0; |
ef76d03b | 12659 | |
c4274b22 RH |
12660 | /* Add the name for the main input file now. We delayed this from |
12661 | dwarf2out_init to avoid complications with PCH. */ | |
3b895f8e NS |
12662 | add_name_attribute (comp_unit_die, filename); |
12663 | if (filename[0] != DIR_SEPARATOR) | |
c4274b22 | 12664 | add_comp_dir_attribute (comp_unit_die); |
79c758fb JJ |
12665 | else if (get_AT (comp_unit_die, DW_AT_comp_dir) == NULL) |
12666 | { | |
12667 | size_t i; | |
12668 | for (i = 1; i < VARRAY_ACTIVE_SIZE (file_table); i++) | |
e3091a5f R |
12669 | if (VARRAY_CHAR_PTR (file_table, i)[0] != DIR_SEPARATOR |
12670 | /* Don't add cwd for <built-in>. */ | |
12671 | && VARRAY_CHAR_PTR (file_table, i)[0] != '<') | |
79c758fb JJ |
12672 | { |
12673 | add_comp_dir_attribute (comp_unit_die); | |
12674 | break; | |
12675 | } | |
12676 | } | |
c4274b22 | 12677 | |
ef76d03b JW |
12678 | /* Traverse the limbo die list, and add parent/child links. The only |
12679 | dies without parents that should be here are concrete instances of | |
12680 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
12681 | For concrete instances, we can get the parent die from the abstract | |
12682 | instance. */ | |
12683 | for (node = limbo_die_list; node; node = next_node) | |
12684 | { | |
12685 | next_node = node->next; | |
12686 | die = node->die; | |
12687 | ||
12688 | if (die->die_parent == NULL) | |
12689 | { | |
a96c67ec | 12690 | dw_die_ref origin = get_AT_ref (die, DW_AT_abstract_origin); |
54ba1f0d | 12691 | tree context; |
2ad9852d | 12692 | |
a96c67ec JM |
12693 | if (origin) |
12694 | add_child_die (origin->die_parent, die); | |
ef76d03b | 12695 | else if (die == comp_unit_die) |
a96c67ec | 12696 | ; |
aea9695c RK |
12697 | /* If this was an expression for a bound involved in a function |
12698 | return type, it may be a SAVE_EXPR for which we weren't able | |
12699 | to find a DIE previously. So try now. */ | |
12700 | else if (node->created_for | |
12701 | && TREE_CODE (node->created_for) == SAVE_EXPR | |
12702 | && 0 != (origin = (lookup_decl_die | |
12703 | (SAVE_EXPR_CONTEXT | |
12704 | (node->created_for))))) | |
12705 | add_child_die (origin, die); | |
6bb28965 JM |
12706 | else if (errorcount > 0 || sorrycount > 0) |
12707 | /* It's OK to be confused by errors in the input. */ | |
12708 | add_child_die (comp_unit_die, die); | |
54ba1f0d RH |
12709 | else if (node->created_for |
12710 | && ((DECL_P (node->created_for) | |
c26fbbca | 12711 | && (context = DECL_CONTEXT (node->created_for))) |
54ba1f0d RH |
12712 | || (TYPE_P (node->created_for) |
12713 | && (context = TYPE_CONTEXT (node->created_for)))) | |
12714 | && TREE_CODE (context) == FUNCTION_DECL) | |
12715 | { | |
12716 | /* In certain situations, the lexical block containing a | |
12717 | nested function can be optimized away, which results | |
12718 | in the nested function die being orphaned. Likewise | |
12719 | with the return type of that nested function. Force | |
12720 | this to be a child of the containing function. */ | |
12721 | origin = lookup_decl_die (context); | |
12722 | if (! origin) | |
12723 | abort (); | |
12724 | add_child_die (origin, die); | |
12725 | } | |
ef76d03b JW |
12726 | else |
12727 | abort (); | |
12728 | } | |
ef76d03b | 12729 | } |
2ad9852d | 12730 | |
a96c67ec | 12731 | limbo_die_list = NULL; |
ef76d03b | 12732 | |
8a8c3656 JM |
12733 | /* Walk through the list of incomplete types again, trying once more to |
12734 | emit full debugging info for them. */ | |
12735 | retry_incomplete_types (); | |
12736 | ||
881c6935 JM |
12737 | /* We need to reverse all the dies before break_out_includes, or |
12738 | we'll see the end of an include file before the beginning. */ | |
12739 | reverse_all_dies (comp_unit_die); | |
12740 | ||
03275f81 ZD |
12741 | if (flag_eliminate_unused_debug_types) |
12742 | prune_unused_types (); | |
12743 | ||
881c6935 JM |
12744 | /* Generate separate CUs for each of the include files we've seen. |
12745 | They will go into limbo_die_list. */ | |
5f632b5e JM |
12746 | if (flag_eliminate_dwarf2_dups) |
12747 | break_out_includes (comp_unit_die); | |
881c6935 JM |
12748 | |
12749 | /* Traverse the DIE's and add add sibling attributes to those DIE's | |
12750 | that have children. */ | |
a3f97cbb | 12751 | add_sibling_attributes (comp_unit_die); |
881c6935 JM |
12752 | for (node = limbo_die_list; node; node = node->next) |
12753 | add_sibling_attributes (node->die); | |
a3f97cbb JW |
12754 | |
12755 | /* Output a terminator label for the .text section. */ | |
7c262518 | 12756 | text_section (); |
4977bab6 | 12757 | (*targetm.asm_out.internal_label) (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 12758 | |
db3c0315 MM |
12759 | /* Output the source line correspondence table. We must do this |
12760 | even if there is no line information. Otherwise, on an empty | |
12761 | translation unit, we will generate a present, but empty, | |
12762 | .debug_info section. IRIX 6.5 `nm' will then complain when | |
12763 | examining the file. */ | |
12764 | if (! DWARF2_ASM_LINE_DEBUG_INFO) | |
e90b62db | 12765 | { |
715bdd29 | 12766 | named_section_flags (DEBUG_LINE_SECTION, SECTION_DEBUG); |
db3c0315 MM |
12767 | output_line_info (); |
12768 | } | |
71dfc51f | 12769 | |
b38a75e5 RH |
12770 | /* Output location list section if necessary. */ |
12771 | if (have_location_lists) | |
12772 | { | |
12773 | /* Output the location lists info. */ | |
12774 | named_section_flags (DEBUG_LOC_SECTION, SECTION_DEBUG); | |
12775 | ASM_GENERATE_INTERNAL_LABEL (loc_section_label, | |
12776 | DEBUG_LOC_SECTION_LABEL, 0); | |
12777 | ASM_OUTPUT_LABEL (asm_out_file, loc_section_label); | |
12778 | output_location_lists (die); | |
12779 | have_location_lists = 0; | |
12780 | } | |
12781 | ||
db3c0315 MM |
12782 | /* We can only use the low/high_pc attributes if all of the code was |
12783 | in .text. */ | |
12784 | if (separate_line_info_table_in_use == 0) | |
12785 | { | |
12786 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label); | |
12787 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); | |
e90b62db | 12788 | } |
2ad9852d RK |
12789 | |
12790 | /* If it wasn't, we need to give .debug_loc and .debug_ranges an appropriate | |
12791 | "base address". Use zero so that these addresses become absolute. */ | |
a20612aa RH |
12792 | else if (have_location_lists || ranges_table_in_use) |
12793 | add_AT_addr (comp_unit_die, DW_AT_entry_pc, const0_rtx); | |
e90b62db | 12794 | |
fe7cd37f RH |
12795 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
12796 | add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list, | |
12797 | debug_line_section_label); | |
db3c0315 | 12798 | |
84a5b4f8 DB |
12799 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12800 | add_AT_lbl_offset (comp_unit_die, DW_AT_macro_info, macinfo_section_label); | |
a96c67ec | 12801 | |
881c6935 JM |
12802 | /* Output all of the compilation units. We put the main one last so that |
12803 | the offsets are available to output_pubnames. */ | |
12804 | for (node = limbo_die_list; node; node = node->next) | |
cc0017a9 | 12805 | output_comp_unit (node->die, 0); |
2ad9852d | 12806 | |
cc0017a9 | 12807 | output_comp_unit (comp_unit_die, 0); |
881c6935 | 12808 | |
a3f97cbb | 12809 | /* Output the abbreviation table. */ |
715bdd29 | 12810 | named_section_flags (DEBUG_ABBREV_SECTION, SECTION_DEBUG); |
a3f97cbb JW |
12811 | output_abbrev_section (); |
12812 | ||
2ad9852d | 12813 | /* Output public names table if necessary. */ |
d291dd49 JM |
12814 | if (pubname_table_in_use) |
12815 | { | |
715bdd29 | 12816 | named_section_flags (DEBUG_PUBNAMES_SECTION, SECTION_DEBUG); |
d291dd49 JM |
12817 | output_pubnames (); |
12818 | } | |
12819 | ||
2ad9852d RK |
12820 | /* Output the address range information. We only put functions in the arange |
12821 | table, so don't write it out if we don't have any. */ | |
a3f97cbb JW |
12822 | if (fde_table_in_use) |
12823 | { | |
715bdd29 | 12824 | named_section_flags (DEBUG_ARANGES_SECTION, SECTION_DEBUG); |
a3f97cbb JW |
12825 | output_aranges (); |
12826 | } | |
a20612aa | 12827 | |
a20612aa RH |
12828 | /* Output ranges section if necessary. */ |
12829 | if (ranges_table_in_use) | |
12830 | { | |
715bdd29 | 12831 | named_section_flags (DEBUG_RANGES_SECTION, SECTION_DEBUG); |
2bee6045 | 12832 | ASM_OUTPUT_LABEL (asm_out_file, ranges_section_label); |
a20612aa RH |
12833 | output_ranges (); |
12834 | } | |
12835 | ||
30f7a378 | 12836 | /* Have to end the primary source file. */ |
cc260610 | 12837 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
c26fbbca | 12838 | { |
715bdd29 | 12839 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
cc260610 | 12840 | dw2_asm_output_data (1, DW_MACINFO_end_file, "End file"); |
2f8d482e | 12841 | dw2_asm_output_data (1, 0, "End compilation unit"); |
cc260610 | 12842 | } |
9eb4015a | 12843 | |
2ad9852d | 12844 | /* If we emitted any DW_FORM_strp form attribute, output the string |
9eb4015a JJ |
12845 | table too. */ |
12846 | if (debug_str_hash) | |
17211ab5 | 12847 | htab_traverse (debug_str_hash, output_indirect_string, NULL); |
a3f97cbb | 12848 | } |
e2500fed GK |
12849 | #else |
12850 | ||
12851 | /* This should never be used, but its address is needed for comparisons. */ | |
12852 | const struct gcc_debug_hooks dwarf2_debug_hooks; | |
12853 | ||
12854 | #endif /* DWARF2_DEBUGGING_INFO */ | |
12855 | ||
12856 | #include "gt-dwarf2out.h" |