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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
54ba1f0d | 2 | Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
06ceef4e | 3 | 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" |
a3f97cbb JW |
39 | #include "tree.h" |
40 | #include "flags.h" | |
11ad4784 | 41 | #include "real.h" |
a3f97cbb JW |
42 | #include "rtl.h" |
43 | #include "hard-reg-set.h" | |
44 | #include "regs.h" | |
45 | #include "insn-config.h" | |
46 | #include "reload.h" | |
52a11cbf | 47 | #include "function.h" |
a3f97cbb | 48 | #include "output.h" |
71dfc51f | 49 | #include "expr.h" |
e78d8e51 | 50 | #include "libfuncs.h" |
3f76745e | 51 | #include "except.h" |
a7cc7f29 | 52 | #include "dwarf2.h" |
76ead72b | 53 | #include "dwarf2out.h" |
2e4b9b8c | 54 | #include "dwarf2asm.h" |
10f0ad3d | 55 | #include "toplev.h" |
1865dbb5 | 56 | #include "varray.h" |
951a525f | 57 | #include "ggc.h" |
881c6935 | 58 | #include "md5.h" |
57bed152 | 59 | #include "tm_p.h" |
2a2b2d43 | 60 | #include "diagnostic.h" |
a51d908e | 61 | #include "debug.h" |
07c9d2eb | 62 | #include "target.h" |
3ac88239 | 63 | #include "langhooks.h" |
9eb4015a | 64 | #include "hashtable.h" |
a3f97cbb | 65 | |
653e276c NB |
66 | #ifdef DWARF2_DEBUGGING_INFO |
67 | static void dwarf2out_source_line PARAMS ((unsigned int, const char *)); | |
68 | #endif | |
69 | ||
770ca8c6 JO |
70 | /* DWARF2 Abbreviation Glossary: |
71 | CFA = Canonical Frame Address | |
00a42e21 JM |
72 | a fixed address on the stack which identifies a call frame. |
73 | We define it to be the value of SP just before the call insn. | |
74 | The CFA register and offset, which may change during the course | |
75 | of the function, are used to calculate its value at runtime. | |
a401107d JO |
76 | CFI = Call Frame Instruction |
77 | an instruction for the DWARF2 abstract machine | |
770ca8c6 JO |
78 | CIE = Common Information Entry |
79 | information describing information common to one or more FDEs | |
80 | DIE = Debugging Information Entry | |
81 | FDE = Frame Description Entry | |
82 | information describing the stack call frame, in particular, | |
83 | how to restore registers | |
84 | ||
85 | DW_CFA_... = DWARF2 CFA call frame instruction | |
86 | DW_TAG_... = DWARF2 DIE tag */ | |
87 | ||
0021b564 JM |
88 | /* Decide whether we want to emit frame unwind information for the current |
89 | translation unit. */ | |
90 | ||
91 | int | |
92 | dwarf2out_do_frame () | |
93 | { | |
94 | return (write_symbols == DWARF2_DEBUG | |
7a0c8d71 | 95 | || write_symbols == VMS_AND_DWARF2_DEBUG |
9ec36da5 | 96 | #ifdef DWARF2_FRAME_INFO |
556273e0 | 97 | || DWARF2_FRAME_INFO |
9ec36da5 | 98 | #endif |
0021b564 | 99 | #ifdef DWARF2_UNWIND_INFO |
14a774a9 | 100 | || flag_unwind_tables |
531073e7 | 101 | || (flag_exceptions && ! USING_SJLJ_EXCEPTIONS) |
0021b564 JM |
102 | #endif |
103 | ); | |
104 | } | |
105 | ||
f3a8e4f5 KG |
106 | /* The size of the target's pointer type. */ |
107 | #ifndef PTR_SIZE | |
108 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) | |
109 | #endif | |
110 | ||
111 | /* Default version of targetm.eh_frame_section. Note this must appear | |
112 | outside the DWARF2_DEBUGGING_INFO || DWARF2_UNWIND_INFO macro | |
113 | guards. */ | |
114 | ||
115 | void | |
116 | default_eh_frame_section () | |
117 | { | |
118 | #ifdef EH_FRAME_SECTION_NAME | |
119 | named_section_flags (EH_FRAME_SECTION_NAME, SECTION_WRITE); | |
120 | #else | |
121 | tree label = get_file_function_name ('F'); | |
122 | ||
123 | data_section (); | |
124 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
5eb99654 | 125 | (*targetm.asm_out.globalize_label) (asm_out_file, IDENTIFIER_POINTER (label)); |
f3a8e4f5 KG |
126 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
127 | #endif | |
128 | } | |
129 | ||
e2500fed GK |
130 | /* Array of RTXes referenced by the debugging information, which therefore |
131 | must be kept around forever. */ | |
132 | static GTY(()) varray_type used_rtx_varray; | |
133 | ||
134 | /* A pointer to the base of a list of incomplete types which might be | |
135 | completed at some later time. incomplete_types_list needs to be a VARRAY | |
136 | because we want to tell the garbage collector about it. */ | |
137 | static GTY(()) varray_type incomplete_types; | |
138 | ||
139 | /* A pointer to the base of a table of references to declaration | |
140 | scopes. This table is a display which tracks the nesting | |
141 | of declaration scopes at the current scope and containing | |
142 | scopes. This table is used to find the proper place to | |
143 | define type declaration DIE's. */ | |
144 | static GTY(()) varray_type decl_scope_table; | |
145 | ||
0021b564 JM |
146 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) |
147 | ||
eaf95893 RK |
148 | /* How to start an assembler comment. */ |
149 | #ifndef ASM_COMMENT_START | |
150 | #define ASM_COMMENT_START ";#" | |
151 | #endif | |
152 | ||
a3f97cbb JW |
153 | typedef struct dw_cfi_struct *dw_cfi_ref; |
154 | typedef struct dw_fde_struct *dw_fde_ref; | |
155 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
156 | |
157 | /* Call frames are described using a sequence of Call Frame | |
158 | Information instructions. The register number, offset | |
159 | and address fields are provided as possible operands; | |
160 | their use is selected by the opcode field. */ | |
71dfc51f | 161 | |
a3f97cbb | 162 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
163 | { |
164 | unsigned long dw_cfi_reg_num; | |
165 | long int dw_cfi_offset; | |
d3e3972c | 166 | const char *dw_cfi_addr; |
7d9d8943 | 167 | struct dw_loc_descr_struct *dw_cfi_loc; |
71dfc51f | 168 | } |
a3f97cbb JW |
169 | dw_cfi_oprnd; |
170 | ||
171 | typedef struct dw_cfi_struct | |
71dfc51f RK |
172 | { |
173 | dw_cfi_ref dw_cfi_next; | |
174 | enum dwarf_call_frame_info dw_cfi_opc; | |
175 | dw_cfi_oprnd dw_cfi_oprnd1; | |
176 | dw_cfi_oprnd dw_cfi_oprnd2; | |
177 | } | |
a3f97cbb JW |
178 | dw_cfi_node; |
179 | ||
7d9d8943 AM |
180 | /* This is how we define the location of the CFA. We use to handle it |
181 | as REG + OFFSET all the time, but now it can be more complex. | |
182 | It can now be either REG + CFA_OFFSET or *(REG + BASE_OFFSET) + CFA_OFFSET. | |
556273e0 | 183 | Instead of passing around REG and OFFSET, we pass a copy |
7d9d8943 AM |
184 | of this structure. */ |
185 | typedef struct cfa_loc | |
186 | { | |
556273e0 | 187 | unsigned long reg; |
7d9d8943 AM |
188 | long offset; |
189 | long base_offset; | |
190 | int indirect; /* 1 if CFA is accessed via a dereference. */ | |
191 | } dw_cfa_location; | |
192 | ||
a3f97cbb | 193 | /* All call frame descriptions (FDE's) in the GCC generated DWARF |
4b674448 | 194 | refer to a single Common Information Entry (CIE), defined at |
fb530c07 | 195 | the beginning of the .debug_frame section. This use of a single |
a3f97cbb JW |
196 | CIE obviates the need to keep track of multiple CIE's |
197 | in the DWARF generation routines below. */ | |
71dfc51f | 198 | |
a3f97cbb | 199 | typedef struct dw_fde_struct |
71dfc51f | 200 | { |
d3e3972c KG |
201 | const char *dw_fde_begin; |
202 | const char *dw_fde_current_label; | |
203 | const char *dw_fde_end; | |
71dfc51f | 204 | dw_cfi_ref dw_fde_cfi; |
52a11cbf | 205 | unsigned funcdef_number; |
b6128b8c | 206 | unsigned all_throwers_are_sibcalls : 1; |
52a11cbf RH |
207 | unsigned nothrow : 1; |
208 | unsigned uses_eh_lsda : 1; | |
71dfc51f | 209 | } |
a3f97cbb JW |
210 | dw_fde_node; |
211 | ||
6d2f8887 | 212 | /* Maximum size (in bytes) of an artificially generated label. */ |
a3f97cbb JW |
213 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 |
214 | ||
a1a4189d JB |
215 | /* The size of addresses as they appear in the Dwarf 2 data. |
216 | Some architectures use word addresses to refer to code locations, | |
217 | but Dwarf 2 info always uses byte addresses. On such machines, | |
218 | Dwarf 2 addresses need to be larger than the architecture's | |
219 | pointers. */ | |
220 | #ifndef DWARF2_ADDR_SIZE | |
221 | #define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT) | |
222 | #endif | |
223 | ||
7e23cb16 | 224 | /* The size in bytes of a DWARF field indicating an offset or length |
a1a4189d JB |
225 | relative to a debug info section, specified to be 4 bytes in the |
226 | DWARF-2 specification. The SGI/MIPS ABI defines it to be the same | |
b13fe8bf | 227 | as PTR_SIZE. */ |
71dfc51f | 228 | |
7e23cb16 JM |
229 | #ifndef DWARF_OFFSET_SIZE |
230 | #define DWARF_OFFSET_SIZE 4 | |
231 | #endif | |
232 | ||
9a666dda JM |
233 | #define DWARF_VERSION 2 |
234 | ||
7e23cb16 JM |
235 | /* Round SIZE up to the nearest BOUNDARY. */ |
236 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
262b6384 | 237 | ((((SIZE) + (BOUNDARY) - 1) / (BOUNDARY)) * (BOUNDARY)) |
a3f97cbb | 238 | |
a3f97cbb | 239 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
27c35f4b | 240 | #ifndef DWARF_CIE_DATA_ALIGNMENT |
469ac993 | 241 | #ifdef STACK_GROWS_DOWNWARD |
08cb3d38 | 242 | #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD)) |
469ac993 | 243 | #else |
08cb3d38 | 244 | #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD) |
469ac993 | 245 | #endif |
2ad9852d | 246 | #endif |
a3f97cbb | 247 | |
3f76745e JM |
248 | /* A pointer to the base of a table that contains frame description |
249 | information for each routine. */ | |
250 | static dw_fde_ref fde_table; | |
a3f97cbb | 251 | |
3f76745e JM |
252 | /* Number of elements currently allocated for fde_table. */ |
253 | static unsigned fde_table_allocated; | |
a94dbf2c | 254 | |
3f76745e JM |
255 | /* Number of elements in fde_table currently in use. */ |
256 | static unsigned fde_table_in_use; | |
a3f97cbb | 257 | |
3f76745e JM |
258 | /* Size (in elements) of increments by which we may expand the |
259 | fde_table. */ | |
260 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 261 | |
a94dbf2c JM |
262 | /* A list of call frame insns for the CIE. */ |
263 | static dw_cfi_ref cie_cfi_head; | |
264 | ||
a3f97cbb JW |
265 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram |
266 | attribute that accelerates the lookup of the FDE associated | |
556273e0 | 267 | with the subprogram. This variable holds the table index of the FDE |
a3f97cbb JW |
268 | associated with the current function (body) definition. */ |
269 | static unsigned current_funcdef_fde; | |
270 | ||
9eb4015a JJ |
271 | struct ht *debug_str_hash; |
272 | ||
273 | struct indirect_string_node | |
274 | { | |
275 | struct ht_identifier id; | |
276 | unsigned int refcount; | |
277 | unsigned int form; | |
278 | char *label; | |
279 | }; | |
280 | ||
a3f97cbb | 281 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 282 | |
83d2b3b9 KG |
283 | static char *stripattributes PARAMS ((const char *)); |
284 | static const char *dwarf_cfi_name PARAMS ((unsigned)); | |
285 | static dw_cfi_ref new_cfi PARAMS ((void)); | |
286 | static void add_cfi PARAMS ((dw_cfi_ref *, dw_cfi_ref)); | |
d3e3972c | 287 | static void add_fde_cfi PARAMS ((const char *, dw_cfi_ref)); |
2ad9852d RK |
288 | static void lookup_cfa_1 PARAMS ((dw_cfi_ref, |
289 | dw_cfa_location *)); | |
7d9d8943 | 290 | static void lookup_cfa PARAMS ((dw_cfa_location *)); |
d3e3972c KG |
291 | static void reg_save PARAMS ((const char *, unsigned, |
292 | unsigned, long)); | |
83d2b3b9 | 293 | static void initial_return_save PARAMS ((rtx)); |
5e640c56 | 294 | static long stack_adjust_offset PARAMS ((rtx)); |
12f0b96b | 295 | static void output_cfi PARAMS ((dw_cfi_ref, dw_fde_ref, int)); |
83d2b3b9 | 296 | static void output_call_frame_info PARAMS ((int)); |
83d2b3b9 | 297 | static void dwarf2out_stack_adjust PARAMS ((rtx)); |
fbfa55b0 RH |
298 | static void queue_reg_save PARAMS ((const char *, rtx, long)); |
299 | static void flush_queued_reg_saves PARAMS ((void)); | |
300 | static bool clobbers_queued_reg_save PARAMS ((rtx)); | |
d3e3972c | 301 | static void dwarf2out_frame_debug_expr PARAMS ((rtx, const char *)); |
a3f97cbb | 302 | |
7d9d8943 AM |
303 | /* Support for complex CFA locations. */ |
304 | static void output_cfa_loc PARAMS ((dw_cfi_ref)); | |
556273e0 | 305 | static void get_cfa_from_loc_descr PARAMS ((dw_cfa_location *, |
7d9d8943 AM |
306 | struct dw_loc_descr_struct *)); |
307 | static struct dw_loc_descr_struct *build_cfa_loc | |
308 | PARAMS ((dw_cfa_location *)); | |
2ad9852d RK |
309 | static void def_cfa_1 PARAMS ((const char *, |
310 | dw_cfa_location *)); | |
7d9d8943 | 311 | |
2e4b9b8c RH |
312 | /* How to start an assembler comment. */ |
313 | #ifndef ASM_COMMENT_START | |
314 | #define ASM_COMMENT_START ";#" | |
a3f97cbb JW |
315 | #endif |
316 | ||
7e23cb16 JM |
317 | /* Data and reference forms for relocatable data. */ |
318 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
319 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
320 | ||
cf2fe500 RH |
321 | #ifndef DEBUG_FRAME_SECTION |
322 | #define DEBUG_FRAME_SECTION ".debug_frame" | |
a3f97cbb | 323 | #endif |
a3f97cbb | 324 | |
5c90448c JM |
325 | #ifndef FUNC_BEGIN_LABEL |
326 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 327 | #endif |
2ad9852d | 328 | |
5c90448c JM |
329 | #ifndef FUNC_END_LABEL |
330 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 331 | #endif |
2ad9852d | 332 | |
27d95cbe | 333 | #define FRAME_BEGIN_LABEL "Lframe" |
a6ab3aad JM |
334 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
335 | #define CIE_END_LABEL "LECIE" | |
2e4b9b8c RH |
336 | #define FDE_LABEL "LSFDE" |
337 | #define FDE_AFTER_SIZE_LABEL "LASFDE" | |
a6ab3aad | 338 | #define FDE_END_LABEL "LEFDE" |
981975b6 RH |
339 | #define LINE_NUMBER_BEGIN_LABEL "LSLT" |
340 | #define LINE_NUMBER_END_LABEL "LELT" | |
341 | #define LN_PROLOG_AS_LABEL "LASLTP" | |
342 | #define LN_PROLOG_END_LABEL "LELTP" | |
881c6935 | 343 | #define DIE_LABEL_PREFIX "DW" |
a3f97cbb | 344 | |
c8cc5c4a | 345 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
346 | is the column for PC, or the first column after all of the hard |
347 | registers. */ | |
c8cc5c4a | 348 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
349 | #ifdef PC_REGNUM |
350 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
351 | #else | |
3073d01c | 352 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS |
a94dbf2c | 353 | #endif |
c8cc5c4a JM |
354 | #endif |
355 | ||
356 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 357 | default, we just provide columns for all registers. */ |
c8cc5c4a | 358 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 359 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 360 | #endif |
3f76745e | 361 | |
2ad9852d RK |
362 | /* The offset from the incoming value of %sp to the top of the stack frame |
363 | for the current function. */ | |
364 | #ifndef INCOMING_FRAME_SP_OFFSET | |
365 | #define INCOMING_FRAME_SP_OFFSET 0 | |
366 | #endif | |
367 | \f | |
0021b564 JM |
368 | /* Hook used by __throw. */ |
369 | ||
370 | rtx | |
371 | expand_builtin_dwarf_fp_regnum () | |
372 | { | |
373 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
374 | } | |
375 | ||
71dfc51f | 376 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 377 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
378 | |
379 | static inline char * | |
a3f97cbb | 380 | stripattributes (s) |
d560ee52 | 381 | const char *s; |
a3f97cbb | 382 | { |
bf20f341 | 383 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
384 | char *p = stripped; |
385 | ||
bf20f341 JW |
386 | *p++ = '*'; |
387 | ||
388 | while (*s && *s != ',') | |
389 | *p++ = *s++; | |
71dfc51f | 390 | |
a3f97cbb JW |
391 | *p = '\0'; |
392 | return stripped; | |
393 | } | |
394 | ||
d9d5c9de | 395 | /* Generate code to initialize the register size table. */ |
2f3ca9e7 | 396 | |
d9d5c9de BS |
397 | void |
398 | expand_builtin_init_dwarf_reg_sizes (address) | |
399 | tree address; | |
2f3ca9e7 | 400 | { |
d9d5c9de BS |
401 | int i; |
402 | enum machine_mode mode = TYPE_MODE (char_type_node); | |
403 | rtx addr = expand_expr (address, NULL_RTX, VOIDmode, 0); | |
2ad9852d | 404 | rtx mem = gen_rtx_MEM (BLKmode, addr); |
2f3ca9e7 | 405 | |
91ea38f9 JH |
406 | for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) |
407 | if (DWARF_FRAME_REGNUM (i) < DWARF_FRAME_REGISTERS) | |
408 | { | |
409 | HOST_WIDE_INT offset = DWARF_FRAME_REGNUM (i) * GET_MODE_SIZE (mode); | |
410 | HOST_WIDE_INT size = GET_MODE_SIZE (reg_raw_mode[i]); | |
2f3ca9e7 | 411 | |
91ea38f9 JH |
412 | if (offset < 0) |
413 | continue; | |
c699cee9 | 414 | |
91ea38f9 JH |
415 | emit_move_insn (adjust_address (mem, mode, offset), GEN_INT (size)); |
416 | } | |
2f3ca9e7 JM |
417 | } |
418 | ||
3f76745e | 419 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 420 | |
d560ee52 | 421 | static const char * |
3f76745e | 422 | dwarf_cfi_name (cfi_opc) |
b3694847 | 423 | unsigned cfi_opc; |
3f76745e JM |
424 | { |
425 | switch (cfi_opc) | |
426 | { | |
427 | case DW_CFA_advance_loc: | |
428 | return "DW_CFA_advance_loc"; | |
429 | case DW_CFA_offset: | |
430 | return "DW_CFA_offset"; | |
431 | case DW_CFA_restore: | |
432 | return "DW_CFA_restore"; | |
433 | case DW_CFA_nop: | |
434 | return "DW_CFA_nop"; | |
435 | case DW_CFA_set_loc: | |
436 | return "DW_CFA_set_loc"; | |
437 | case DW_CFA_advance_loc1: | |
438 | return "DW_CFA_advance_loc1"; | |
439 | case DW_CFA_advance_loc2: | |
440 | return "DW_CFA_advance_loc2"; | |
441 | case DW_CFA_advance_loc4: | |
442 | return "DW_CFA_advance_loc4"; | |
443 | case DW_CFA_offset_extended: | |
444 | return "DW_CFA_offset_extended"; | |
445 | case DW_CFA_restore_extended: | |
446 | return "DW_CFA_restore_extended"; | |
447 | case DW_CFA_undefined: | |
448 | return "DW_CFA_undefined"; | |
449 | case DW_CFA_same_value: | |
450 | return "DW_CFA_same_value"; | |
451 | case DW_CFA_register: | |
452 | return "DW_CFA_register"; | |
453 | case DW_CFA_remember_state: | |
454 | return "DW_CFA_remember_state"; | |
455 | case DW_CFA_restore_state: | |
456 | return "DW_CFA_restore_state"; | |
457 | case DW_CFA_def_cfa: | |
458 | return "DW_CFA_def_cfa"; | |
459 | case DW_CFA_def_cfa_register: | |
460 | return "DW_CFA_def_cfa_register"; | |
461 | case DW_CFA_def_cfa_offset: | |
462 | return "DW_CFA_def_cfa_offset"; | |
6bb28965 JM |
463 | |
464 | /* DWARF 3 */ | |
7d9d8943 AM |
465 | case DW_CFA_def_cfa_expression: |
466 | return "DW_CFA_def_cfa_expression"; | |
6bb28965 JM |
467 | case DW_CFA_expression: |
468 | return "DW_CFA_expression"; | |
469 | case DW_CFA_offset_extended_sf: | |
470 | return "DW_CFA_offset_extended_sf"; | |
471 | case DW_CFA_def_cfa_sf: | |
472 | return "DW_CFA_def_cfa_sf"; | |
473 | case DW_CFA_def_cfa_offset_sf: | |
474 | return "DW_CFA_def_cfa_offset_sf"; | |
c53aa195 | 475 | |
3f76745e JM |
476 | /* SGI/MIPS specific */ |
477 | case DW_CFA_MIPS_advance_loc8: | |
478 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
479 | |
480 | /* GNU extensions */ | |
481 | case DW_CFA_GNU_window_save: | |
482 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
483 | case DW_CFA_GNU_args_size: |
484 | return "DW_CFA_GNU_args_size"; | |
3f388b42 GK |
485 | case DW_CFA_GNU_negative_offset_extended: |
486 | return "DW_CFA_GNU_negative_offset_extended"; | |
c53aa195 | 487 | |
3f76745e JM |
488 | default: |
489 | return "DW_CFA_<unknown>"; | |
490 | } | |
491 | } | |
a3f97cbb | 492 | |
3f76745e | 493 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 494 | |
3f76745e JM |
495 | static inline dw_cfi_ref |
496 | new_cfi () | |
497 | { | |
b3694847 | 498 | dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); |
71dfc51f | 499 | |
3f76745e JM |
500 | cfi->dw_cfi_next = NULL; |
501 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
502 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 503 | |
3f76745e JM |
504 | return cfi; |
505 | } | |
a3f97cbb | 506 | |
3f76745e | 507 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 508 | |
3f76745e JM |
509 | static inline void |
510 | add_cfi (list_head, cfi) | |
b3694847 SS |
511 | dw_cfi_ref *list_head; |
512 | dw_cfi_ref cfi; | |
3f76745e | 513 | { |
b3694847 | 514 | dw_cfi_ref *p; |
a3f97cbb | 515 | |
3f76745e JM |
516 | /* Find the end of the chain. */ |
517 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
518 | ; | |
519 | ||
520 | *p = cfi; | |
a3f97cbb JW |
521 | } |
522 | ||
3f76745e | 523 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 524 | |
c53aa195 | 525 | char * |
3f76745e | 526 | dwarf2out_cfi_label () |
a3f97cbb | 527 | { |
3f76745e JM |
528 | static char label[20]; |
529 | static unsigned long label_num = 0; | |
556273e0 | 530 | |
3f76745e JM |
531 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); |
532 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
3f76745e | 533 | return label; |
a3f97cbb JW |
534 | } |
535 | ||
3f76745e JM |
536 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
537 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 538 | |
3f76745e JM |
539 | static void |
540 | add_fde_cfi (label, cfi) | |
b3694847 SS |
541 | const char *label; |
542 | dw_cfi_ref cfi; | |
a3f97cbb | 543 | { |
3f76745e JM |
544 | if (label) |
545 | { | |
b3694847 | 546 | dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
a3f97cbb | 547 | |
3f76745e JM |
548 | if (*label == 0) |
549 | label = dwarf2out_cfi_label (); | |
71dfc51f | 550 | |
3f76745e JM |
551 | if (fde->dw_fde_current_label == NULL |
552 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
553 | { | |
b3694847 | 554 | dw_cfi_ref xcfi; |
a3f97cbb | 555 | |
3f76745e | 556 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 557 | |
3f76745e JM |
558 | /* Set the location counter to the new label. */ |
559 | xcfi = new_cfi (); | |
560 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
561 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
562 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
563 | } | |
71dfc51f | 564 | |
3f76745e JM |
565 | add_cfi (&fde->dw_fde_cfi, cfi); |
566 | } | |
567 | ||
568 | else | |
569 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
570 | } |
571 | ||
3f76745e | 572 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 573 | |
3f76745e | 574 | static inline void |
7d9d8943 | 575 | lookup_cfa_1 (cfi, loc) |
b3694847 SS |
576 | dw_cfi_ref cfi; |
577 | dw_cfa_location *loc; | |
a3f97cbb | 578 | { |
3f76745e JM |
579 | switch (cfi->dw_cfi_opc) |
580 | { | |
581 | case DW_CFA_def_cfa_offset: | |
7d9d8943 | 582 | loc->offset = cfi->dw_cfi_oprnd1.dw_cfi_offset; |
3f76745e JM |
583 | break; |
584 | case DW_CFA_def_cfa_register: | |
7d9d8943 | 585 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
3f76745e JM |
586 | break; |
587 | case DW_CFA_def_cfa: | |
7d9d8943 AM |
588 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
589 | loc->offset = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
590 | break; | |
591 | case DW_CFA_def_cfa_expression: | |
592 | get_cfa_from_loc_descr (loc, cfi->dw_cfi_oprnd1.dw_cfi_loc); | |
3f76745e | 593 | break; |
e9a25f70 JL |
594 | default: |
595 | break; | |
3f76745e | 596 | } |
a3f97cbb JW |
597 | } |
598 | ||
3f76745e | 599 | /* Find the previous value for the CFA. */ |
71dfc51f | 600 | |
3f76745e | 601 | static void |
7d9d8943 | 602 | lookup_cfa (loc) |
b3694847 | 603 | dw_cfa_location *loc; |
a3f97cbb | 604 | { |
b3694847 | 605 | dw_cfi_ref cfi; |
3f76745e | 606 | |
7d9d8943 AM |
607 | loc->reg = (unsigned long) -1; |
608 | loc->offset = 0; | |
609 | loc->indirect = 0; | |
610 | loc->base_offset = 0; | |
3f76745e JM |
611 | |
612 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
7d9d8943 | 613 | lookup_cfa_1 (cfi, loc); |
3f76745e JM |
614 | |
615 | if (fde_table_in_use) | |
a3f97cbb | 616 | { |
b3694847 | 617 | dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
3f76745e | 618 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) |
7d9d8943 | 619 | lookup_cfa_1 (cfi, loc); |
a3f97cbb JW |
620 | } |
621 | } | |
622 | ||
3f76745e | 623 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
fbfa55b0 | 624 | static dw_cfa_location cfa; |
71dfc51f | 625 | |
3f76745e JM |
626 | /* The register used for saving registers to the stack, and its offset |
627 | from the CFA. */ | |
fbfa55b0 | 628 | static dw_cfa_location cfa_store; |
3f76745e | 629 | |
0021b564 JM |
630 | /* The running total of the size of arguments pushed onto the stack. */ |
631 | static long args_size; | |
632 | ||
b57d9225 JM |
633 | /* The last args_size we actually output. */ |
634 | static long old_args_size; | |
635 | ||
3f76745e JM |
636 | /* Entry point to update the canonical frame address (CFA). |
637 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
638 | calculated from REG+OFFSET. */ | |
639 | ||
640 | void | |
641 | dwarf2out_def_cfa (label, reg, offset) | |
b3694847 | 642 | const char *label; |
7d9d8943 AM |
643 | unsigned reg; |
644 | long offset; | |
645 | { | |
646 | dw_cfa_location loc; | |
647 | loc.indirect = 0; | |
648 | loc.base_offset = 0; | |
649 | loc.reg = reg; | |
650 | loc.offset = offset; | |
651 | def_cfa_1 (label, &loc); | |
652 | } | |
653 | ||
770ca8c6 | 654 | /* This routine does the actual work. The CFA is now calculated from |
7d9d8943 | 655 | the dw_cfa_location structure. */ |
2ad9852d | 656 | |
7d9d8943 AM |
657 | static void |
658 | def_cfa_1 (label, loc_p) | |
b3694847 | 659 | const char *label; |
7d9d8943 | 660 | dw_cfa_location *loc_p; |
a3f97cbb | 661 | { |
b3694847 | 662 | dw_cfi_ref cfi; |
7d9d8943 | 663 | dw_cfa_location old_cfa, loc; |
3f76745e | 664 | |
7d9d8943 AM |
665 | cfa = *loc_p; |
666 | loc = *loc_p; | |
5bef9b1f | 667 | |
7d9d8943 AM |
668 | if (cfa_store.reg == loc.reg && loc.indirect == 0) |
669 | cfa_store.offset = loc.offset; | |
3f76745e | 670 | |
7d9d8943 AM |
671 | loc.reg = DWARF_FRAME_REGNUM (loc.reg); |
672 | lookup_cfa (&old_cfa); | |
673 | ||
2ad9852d RK |
674 | /* If nothing changed, no need to issue any call frame instructions. */ |
675 | if (loc.reg == old_cfa.reg && loc.offset == old_cfa.offset | |
676 | && loc.indirect == old_cfa.indirect | |
677 | && (loc.indirect == 0 || loc.base_offset == old_cfa.base_offset)) | |
678 | return; | |
3f76745e JM |
679 | |
680 | cfi = new_cfi (); | |
681 | ||
e09bbb25 | 682 | if (loc.reg == old_cfa.reg && !loc.indirect) |
a3f97cbb | 683 | { |
770ca8c6 JO |
684 | /* Construct a "DW_CFA_def_cfa_offset <offset>" instruction, |
685 | indicating the CFA register did not change but the offset | |
686 | did. */ | |
3f76745e | 687 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
7d9d8943 | 688 | cfi->dw_cfi_oprnd1.dw_cfi_offset = loc.offset; |
3f76745e | 689 | } |
a3f97cbb | 690 | |
3f76745e | 691 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
7d9d8943 | 692 | else if (loc.offset == old_cfa.offset && old_cfa.reg != (unsigned long) -1 |
e09bbb25 | 693 | && !loc.indirect) |
3f76745e | 694 | { |
770ca8c6 JO |
695 | /* Construct a "DW_CFA_def_cfa_register <register>" instruction, |
696 | indicating the CFA register has changed to <register> but the | |
697 | offset has not changed. */ | |
3f76745e | 698 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; |
7d9d8943 | 699 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
3f76745e JM |
700 | } |
701 | #endif | |
a3f97cbb | 702 | |
7d9d8943 | 703 | else if (loc.indirect == 0) |
3f76745e | 704 | { |
770ca8c6 JO |
705 | /* Construct a "DW_CFA_def_cfa <register> <offset>" instruction, |
706 | indicating the CFA register has changed to <register> with | |
707 | the specified offset. */ | |
3f76745e | 708 | cfi->dw_cfi_opc = DW_CFA_def_cfa; |
7d9d8943 AM |
709 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
710 | cfi->dw_cfi_oprnd2.dw_cfi_offset = loc.offset; | |
711 | } | |
712 | else | |
713 | { | |
770ca8c6 JO |
714 | /* Construct a DW_CFA_def_cfa_expression instruction to |
715 | calculate the CFA using a full location expression since no | |
716 | register-offset pair is available. */ | |
556273e0 | 717 | struct dw_loc_descr_struct *loc_list; |
2ad9852d | 718 | |
7d9d8943 AM |
719 | cfi->dw_cfi_opc = DW_CFA_def_cfa_expression; |
720 | loc_list = build_cfa_loc (&loc); | |
721 | cfi->dw_cfi_oprnd1.dw_cfi_loc = loc_list; | |
a3f97cbb | 722 | } |
3f76745e JM |
723 | |
724 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
725 | } |
726 | ||
3f76745e JM |
727 | /* Add the CFI for saving a register. REG is the CFA column number. |
728 | LABEL is passed to add_fde_cfi. | |
729 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
730 | otherwise it is saved in SREG. */ | |
71dfc51f | 731 | |
3f76745e JM |
732 | static void |
733 | reg_save (label, reg, sreg, offset) | |
b3694847 SS |
734 | const char *label; |
735 | unsigned reg; | |
736 | unsigned sreg; | |
737 | long offset; | |
a3f97cbb | 738 | { |
b3694847 | 739 | dw_cfi_ref cfi = new_cfi (); |
3f76745e JM |
740 | |
741 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
742 | ||
85066503 MH |
743 | /* The following comparison is correct. -1 is used to indicate that |
744 | the value isn't a register number. */ | |
745 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 746 | { |
3f76745e JM |
747 | if (reg & ~0x3f) |
748 | /* The register number won't fit in 6 bits, so we have to use | |
749 | the long form. */ | |
750 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
751 | else | |
752 | cfi->dw_cfi_opc = DW_CFA_offset; | |
753 | ||
27c35f4b HPN |
754 | #ifdef ENABLE_CHECKING |
755 | { | |
756 | /* If we get an offset that is not a multiple of | |
757 | DWARF_CIE_DATA_ALIGNMENT, there is either a bug in the | |
758 | definition of DWARF_CIE_DATA_ALIGNMENT, or a bug in the machine | |
759 | description. */ | |
760 | long check_offset = offset / DWARF_CIE_DATA_ALIGNMENT; | |
761 | ||
762 | if (check_offset * DWARF_CIE_DATA_ALIGNMENT != offset) | |
763 | abort (); | |
764 | } | |
765 | #endif | |
3f76745e | 766 | offset /= DWARF_CIE_DATA_ALIGNMENT; |
3a88cbd1 | 767 | if (offset < 0) |
6bb28965 | 768 | cfi->dw_cfi_opc = DW_CFA_offset_extended_sf; |
2ad9852d | 769 | |
3f76745e JM |
770 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
771 | } | |
2c849145 JM |
772 | else if (sreg == reg) |
773 | /* We could emit a DW_CFA_same_value in this case, but don't bother. */ | |
774 | return; | |
3f76745e JM |
775 | else |
776 | { | |
777 | cfi->dw_cfi_opc = DW_CFA_register; | |
778 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
779 | } | |
780 | ||
781 | add_fde_cfi (label, cfi); | |
782 | } | |
783 | ||
c53aa195 JM |
784 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
785 | This CFI tells the unwinder that it needs to restore the window registers | |
786 | from the previous frame's window save area. | |
556273e0 | 787 | |
c53aa195 JM |
788 | ??? Perhaps we should note in the CIE where windows are saved (instead of |
789 | assuming 0(cfa)) and what registers are in the window. */ | |
790 | ||
791 | void | |
792 | dwarf2out_window_save (label) | |
b3694847 | 793 | const char *label; |
c53aa195 | 794 | { |
b3694847 | 795 | dw_cfi_ref cfi = new_cfi (); |
2ad9852d | 796 | |
c53aa195 JM |
797 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; |
798 | add_fde_cfi (label, cfi); | |
799 | } | |
800 | ||
0021b564 JM |
801 | /* Add a CFI to update the running total of the size of arguments |
802 | pushed onto the stack. */ | |
803 | ||
804 | void | |
805 | dwarf2out_args_size (label, size) | |
d3e3972c | 806 | const char *label; |
0021b564 JM |
807 | long size; |
808 | { | |
b3694847 | 809 | dw_cfi_ref cfi; |
b57d9225 JM |
810 | |
811 | if (size == old_args_size) | |
812 | return; | |
2ad9852d | 813 | |
b57d9225 JM |
814 | old_args_size = size; |
815 | ||
816 | cfi = new_cfi (); | |
0021b564 JM |
817 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
818 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
819 | add_fde_cfi (label, cfi); | |
820 | } | |
821 | ||
c53aa195 JM |
822 | /* Entry point for saving a register to the stack. REG is the GCC register |
823 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
824 | |
825 | void | |
826 | dwarf2out_reg_save (label, reg, offset) | |
b3694847 SS |
827 | const char *label; |
828 | unsigned reg; | |
829 | long offset; | |
3f76745e JM |
830 | { |
831 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
832 | } | |
833 | ||
c53aa195 JM |
834 | /* Entry point for saving the return address in the stack. |
835 | LABEL and OFFSET are passed to reg_save. */ | |
836 | ||
837 | void | |
838 | dwarf2out_return_save (label, offset) | |
b3694847 SS |
839 | const char *label; |
840 | long offset; | |
c53aa195 JM |
841 | { |
842 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
843 | } | |
844 | ||
845 | /* Entry point for saving the return address in a register. | |
846 | LABEL and SREG are passed to reg_save. */ | |
847 | ||
848 | void | |
849 | dwarf2out_return_reg (label, sreg) | |
b3694847 SS |
850 | const char *label; |
851 | unsigned sreg; | |
c53aa195 JM |
852 | { |
853 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
854 | } | |
855 | ||
3f76745e JM |
856 | /* Record the initial position of the return address. RTL is |
857 | INCOMING_RETURN_ADDR_RTX. */ | |
858 | ||
859 | static void | |
860 | initial_return_save (rtl) | |
b3694847 | 861 | rtx rtl; |
3f76745e | 862 | { |
973838fd | 863 | unsigned int reg = (unsigned int) -1; |
2ad9852d | 864 | HOST_WIDE_INT offset = 0; |
3f76745e JM |
865 | |
866 | switch (GET_CODE (rtl)) | |
867 | { | |
868 | case REG: | |
869 | /* RA is in a register. */ | |
2c849145 | 870 | reg = DWARF_FRAME_REGNUM (REGNO (rtl)); |
3f76745e | 871 | break; |
2ad9852d | 872 | |
3f76745e JM |
873 | case MEM: |
874 | /* RA is on the stack. */ | |
875 | rtl = XEXP (rtl, 0); | |
876 | switch (GET_CODE (rtl)) | |
877 | { | |
878 | case REG: | |
3a88cbd1 JL |
879 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
880 | abort (); | |
3f76745e JM |
881 | offset = 0; |
882 | break; | |
2ad9852d | 883 | |
3f76745e | 884 | case PLUS: |
3a88cbd1 JL |
885 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
886 | abort (); | |
3f76745e JM |
887 | offset = INTVAL (XEXP (rtl, 1)); |
888 | break; | |
2ad9852d | 889 | |
3f76745e | 890 | case MINUS: |
3a88cbd1 JL |
891 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
892 | abort (); | |
3f76745e JM |
893 | offset = -INTVAL (XEXP (rtl, 1)); |
894 | break; | |
2ad9852d | 895 | |
3f76745e JM |
896 | default: |
897 | abort (); | |
898 | } | |
2ad9852d | 899 | |
3f76745e | 900 | break; |
2ad9852d | 901 | |
c53aa195 JM |
902 | case PLUS: |
903 | /* The return address is at some offset from any value we can | |
904 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
905 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
906 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
907 | abort (); | |
c53aa195 JM |
908 | initial_return_save (XEXP (rtl, 0)); |
909 | return; | |
2ad9852d | 910 | |
a3f97cbb | 911 | default: |
3f76745e | 912 | abort (); |
a3f97cbb | 913 | } |
3f76745e | 914 | |
7d9d8943 | 915 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa.offset); |
a3f97cbb JW |
916 | } |
917 | ||
1ba5ae8f | 918 | /* Given a SET, calculate the amount of stack adjustment it |
30f7a378 | 919 | contains. */ |
1ba5ae8f | 920 | |
5e640c56 AH |
921 | static long |
922 | stack_adjust_offset (pattern) | |
173bf5be | 923 | rtx pattern; |
1ba5ae8f AH |
924 | { |
925 | rtx src = SET_SRC (pattern); | |
926 | rtx dest = SET_DEST (pattern); | |
2ad9852d | 927 | HOST_WIDE_INT offset = 0; |
1ba5ae8f AH |
928 | enum rtx_code code; |
929 | ||
930 | if (dest == stack_pointer_rtx) | |
931 | { | |
932 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
933 | code = GET_CODE (src); | |
934 | if (! (code == PLUS || code == MINUS) | |
935 | || XEXP (src, 0) != stack_pointer_rtx | |
936 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
937 | return 0; | |
938 | ||
939 | offset = INTVAL (XEXP (src, 1)); | |
f472fa29 AM |
940 | if (code == PLUS) |
941 | offset = -offset; | |
1ba5ae8f AH |
942 | } |
943 | else if (GET_CODE (dest) == MEM) | |
944 | { | |
945 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
946 | src = XEXP (dest, 0); | |
947 | code = GET_CODE (src); | |
948 | ||
c26fbbca KH |
949 | switch (code) |
950 | { | |
f472fa29 AM |
951 | case PRE_MODIFY: |
952 | case POST_MODIFY: | |
953 | if (XEXP (src, 0) == stack_pointer_rtx) | |
954 | { | |
955 | rtx val = XEXP (XEXP (src, 1), 1); | |
956 | /* We handle only adjustments by constant amount. */ | |
957 | if (GET_CODE (XEXP (src, 1)) != PLUS || | |
958 | GET_CODE (val) != CONST_INT) | |
c26fbbca | 959 | abort (); |
f472fa29 AM |
960 | offset = -INTVAL (val); |
961 | break; | |
962 | } | |
963 | return 0; | |
964 | ||
965 | case PRE_DEC: | |
966 | case POST_DEC: | |
967 | if (XEXP (src, 0) == stack_pointer_rtx) | |
968 | { | |
969 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
970 | break; | |
971 | } | |
972 | return 0; | |
973 | ||
974 | case PRE_INC: | |
975 | case POST_INC: | |
976 | if (XEXP (src, 0) == stack_pointer_rtx) | |
977 | { | |
978 | offset = -GET_MODE_SIZE (GET_MODE (dest)); | |
979 | break; | |
980 | } | |
981 | return 0; | |
2ad9852d | 982 | |
f472fa29 AM |
983 | default: |
984 | return 0; | |
e2134eea | 985 | } |
1ba5ae8f AH |
986 | } |
987 | else | |
988 | return 0; | |
989 | ||
1ba5ae8f AH |
990 | return offset; |
991 | } | |
992 | ||
0021b564 JM |
993 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
994 | make a note of it if it does. EH uses this information to find out how | |
995 | much extra space it needs to pop off the stack. */ | |
996 | ||
997 | static void | |
998 | dwarf2out_stack_adjust (insn) | |
999 | rtx insn; | |
1000 | { | |
2ad9852d | 1001 | HOST_WIDE_INT offset; |
d3e3972c | 1002 | const char *label; |
2ad9852d | 1003 | int i; |
0021b564 | 1004 | |
2ad9852d | 1005 | if (!flag_asynchronous_unwind_tables && GET_CODE (insn) == CALL_INSN) |
b57d9225 JM |
1006 | { |
1007 | /* Extract the size of the args from the CALL rtx itself. */ | |
b57d9225 JM |
1008 | insn = PATTERN (insn); |
1009 | if (GET_CODE (insn) == PARALLEL) | |
1010 | insn = XVECEXP (insn, 0, 0); | |
1011 | if (GET_CODE (insn) == SET) | |
1012 | insn = SET_SRC (insn); | |
3db35af4 MM |
1013 | if (GET_CODE (insn) != CALL) |
1014 | abort (); | |
2ad9852d | 1015 | |
b57d9225 JM |
1016 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); |
1017 | return; | |
1018 | } | |
1019 | ||
1020 | /* If only calls can throw, and we have a frame pointer, | |
1021 | save up adjustments until we see the CALL_INSN. */ | |
2ad9852d | 1022 | else if (!flag_asynchronous_unwind_tables && cfa.reg != STACK_POINTER_REGNUM) |
b57d9225 JM |
1023 | return; |
1024 | ||
6020d360 | 1025 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1026 | { |
6020d360 JM |
1027 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1028 | the compiler will have already emitted a stack adjustment, but | |
1029 | doesn't bother for calls to noreturn functions. */ | |
1030 | #ifdef STACK_GROWS_DOWNWARD | |
1031 | offset = -args_size; | |
1032 | #else | |
1033 | offset = args_size; | |
1034 | #endif | |
0021b564 | 1035 | } |
6020d360 | 1036 | else if (GET_CODE (PATTERN (insn)) == SET) |
2ad9852d | 1037 | offset = stack_adjust_offset (PATTERN (insn)); |
1ba5ae8f AH |
1038 | else if (GET_CODE (PATTERN (insn)) == PARALLEL |
1039 | || GET_CODE (PATTERN (insn)) == SEQUENCE) | |
1040 | { | |
1041 | /* There may be stack adjustments inside compound insns. Search | |
2ad9852d RK |
1042 | for them. */ |
1043 | for (offset = 0, i = XVECLEN (PATTERN (insn), 0) - 1; i >= 0; i--) | |
1044 | if (GET_CODE (XVECEXP (PATTERN (insn), 0, i)) == SET) | |
1045 | offset += stack_adjust_offset (XVECEXP (PATTERN (insn), 0, i)); | |
0021b564 JM |
1046 | } |
1047 | else | |
1048 | return; | |
0b34cf1e | 1049 | |
6020d360 JM |
1050 | if (offset == 0) |
1051 | return; | |
1052 | ||
7d9d8943 AM |
1053 | if (cfa.reg == STACK_POINTER_REGNUM) |
1054 | cfa.offset += offset; | |
0021b564 JM |
1055 | |
1056 | #ifndef STACK_GROWS_DOWNWARD | |
1057 | offset = -offset; | |
1058 | #endif | |
2ad9852d | 1059 | |
0021b564 JM |
1060 | args_size += offset; |
1061 | if (args_size < 0) | |
1062 | args_size = 0; | |
1063 | ||
1064 | label = dwarf2out_cfi_label (); | |
7d9d8943 | 1065 | def_cfa_1 (label, &cfa); |
0021b564 JM |
1066 | dwarf2out_args_size (label, args_size); |
1067 | } | |
1068 | ||
fbfa55b0 RH |
1069 | /* We delay emitting a register save until either (a) we reach the end |
1070 | of the prologue or (b) the register is clobbered. This clusters | |
1071 | register saves so that there are fewer pc advances. */ | |
1072 | ||
1073 | struct queued_reg_save | |
1074 | { | |
1075 | struct queued_reg_save *next; | |
1076 | rtx reg; | |
1077 | long cfa_offset; | |
1078 | }; | |
1079 | ||
1080 | static struct queued_reg_save *queued_reg_saves; | |
1081 | static const char *last_reg_save_label; | |
1082 | ||
1083 | static void | |
1084 | queue_reg_save (label, reg, offset) | |
1085 | const char *label; | |
1086 | rtx reg; | |
1087 | long offset; | |
1088 | { | |
1089 | struct queued_reg_save *q = (struct queued_reg_save *) xmalloc (sizeof (*q)); | |
1090 | ||
1091 | q->next = queued_reg_saves; | |
1092 | q->reg = reg; | |
1093 | q->cfa_offset = offset; | |
1094 | queued_reg_saves = q; | |
1095 | ||
1096 | last_reg_save_label = label; | |
1097 | } | |
1098 | ||
1099 | static void | |
1100 | flush_queued_reg_saves () | |
1101 | { | |
1102 | struct queued_reg_save *q, *next; | |
1103 | ||
c26fbbca | 1104 | for (q = queued_reg_saves; q; q = next) |
fbfa55b0 RH |
1105 | { |
1106 | dwarf2out_reg_save (last_reg_save_label, REGNO (q->reg), q->cfa_offset); | |
1107 | next = q->next; | |
1108 | free (q); | |
1109 | } | |
1110 | ||
1111 | queued_reg_saves = NULL; | |
1112 | last_reg_save_label = NULL; | |
1113 | } | |
1114 | ||
1115 | static bool | |
1116 | clobbers_queued_reg_save (insn) | |
1117 | rtx insn; | |
1118 | { | |
1119 | struct queued_reg_save *q; | |
1120 | ||
c26fbbca | 1121 | for (q = queued_reg_saves; q; q = q->next) |
fbfa55b0 RH |
1122 | if (modified_in_p (q->reg, insn)) |
1123 | return true; | |
1124 | ||
1125 | return false; | |
1126 | } | |
c26fbbca | 1127 | |
fbfa55b0 | 1128 | |
770ca8c6 JO |
1129 | /* A temporary register holding an integral value used in adjusting SP |
1130 | or setting up the store_reg. The "offset" field holds the integer | |
1131 | value, not an offset. */ | |
fbfa55b0 | 1132 | static dw_cfa_location cfa_temp; |
770ca8c6 JO |
1133 | |
1134 | /* Record call frame debugging information for an expression EXPR, | |
1135 | which either sets SP or FP (adjusting how we calculate the frame | |
1136 | address) or saves a register to the stack. LABEL indicates the | |
1137 | address of EXPR. | |
1138 | ||
1139 | This function encodes a state machine mapping rtxes to actions on | |
1140 | cfa, cfa_store, and cfa_temp.reg. We describe these rules so | |
1141 | users need not read the source code. | |
1142 | ||
a401107d JO |
1143 | The High-Level Picture |
1144 | ||
1145 | Changes in the register we use to calculate the CFA: Currently we | |
1146 | assume that if you copy the CFA register into another register, we | |
1147 | should take the other one as the new CFA register; this seems to | |
1148 | work pretty well. If it's wrong for some target, it's simple | |
1149 | enough not to set RTX_FRAME_RELATED_P on the insn in question. | |
1150 | ||
1151 | Changes in the register we use for saving registers to the stack: | |
1152 | This is usually SP, but not always. Again, we deduce that if you | |
1153 | copy SP into another register (and SP is not the CFA register), | |
1154 | then the new register is the one we will be using for register | |
1155 | saves. This also seems to work. | |
1156 | ||
1157 | Register saves: There's not much guesswork about this one; if | |
1158 | RTX_FRAME_RELATED_P is set on an insn which modifies memory, it's a | |
1159 | register save, and the register used to calculate the destination | |
1160 | had better be the one we think we're using for this purpose. | |
1161 | ||
1162 | Except: If the register being saved is the CFA register, and the | |
cc2902df | 1163 | offset is nonzero, we are saving the CFA, so we assume we have to |
a401107d JO |
1164 | use DW_CFA_def_cfa_expression. If the offset is 0, we assume that |
1165 | the intent is to save the value of SP from the previous frame. | |
1166 | ||
770ca8c6 JO |
1167 | Invariants / Summaries of Rules |
1168 | ||
a401107d JO |
1169 | cfa current rule for calculating the CFA. It usually |
1170 | consists of a register and an offset. | |
770ca8c6 JO |
1171 | cfa_store register used by prologue code to save things to the stack |
1172 | cfa_store.offset is the offset from the value of | |
1173 | cfa_store.reg to the actual CFA | |
1174 | cfa_temp register holding an integral value. cfa_temp.offset | |
1175 | stores the value, which will be used to adjust the | |
19ec6a36 AM |
1176 | stack pointer. cfa_temp is also used like cfa_store, |
1177 | to track stores to the stack via fp or a temp reg. | |
c26fbbca | 1178 | |
770ca8c6 JO |
1179 | Rules 1- 4: Setting a register's value to cfa.reg or an expression |
1180 | with cfa.reg as the first operand changes the cfa.reg and its | |
19ec6a36 AM |
1181 | cfa.offset. Rule 1 and 4 also set cfa_temp.reg and |
1182 | cfa_temp.offset. | |
770ca8c6 JO |
1183 | |
1184 | Rules 6- 9: Set a non-cfa.reg register value to a constant or an | |
1185 | expression yielding a constant. This sets cfa_temp.reg | |
1186 | and cfa_temp.offset. | |
1187 | ||
1188 | Rule 5: Create a new register cfa_store used to save items to the | |
1189 | stack. | |
1190 | ||
19ec6a36 | 1191 | Rules 10-14: Save a register to the stack. Define offset as the |
a401107d | 1192 | difference of the original location and cfa_store's |
19ec6a36 | 1193 | location (or cfa_temp's location if cfa_temp is used). |
770ca8c6 JO |
1194 | |
1195 | The Rules | |
1196 | ||
1197 | "{a,b}" indicates a choice of a xor b. | |
1198 | "<reg>:cfa.reg" indicates that <reg> must equal cfa.reg. | |
1199 | ||
1200 | Rule 1: | |
1201 | (set <reg1> <reg2>:cfa.reg) | |
19ec6a36 | 1202 | effects: cfa.reg = <reg1> |
770ca8c6 | 1203 | cfa.offset unchanged |
19ec6a36 AM |
1204 | cfa_temp.reg = <reg1> |
1205 | cfa_temp.offset = cfa.offset | |
770ca8c6 JO |
1206 | |
1207 | Rule 2: | |
2ad9852d RK |
1208 | (set sp ({minus,plus,losum} {sp,fp}:cfa.reg |
1209 | {<const_int>,<reg>:cfa_temp.reg})) | |
770ca8c6 JO |
1210 | effects: cfa.reg = sp if fp used |
1211 | cfa.offset += {+/- <const_int>, cfa_temp.offset} if cfa.reg==sp | |
1212 | cfa_store.offset += {+/- <const_int>, cfa_temp.offset} | |
1213 | if cfa_store.reg==sp | |
1214 | ||
1215 | Rule 3: | |
19ec6a36 | 1216 | (set fp ({minus,plus,losum} <reg>:cfa.reg <const_int>)) |
770ca8c6 JO |
1217 | effects: cfa.reg = fp |
1218 | cfa_offset += +/- <const_int> | |
1219 | ||
1220 | Rule 4: | |
19ec6a36 | 1221 | (set <reg1> ({plus,losum} <reg2>:cfa.reg <const_int>)) |
770ca8c6 JO |
1222 | constraints: <reg1> != fp |
1223 | <reg1> != sp | |
1224 | effects: cfa.reg = <reg1> | |
19ec6a36 AM |
1225 | cfa_temp.reg = <reg1> |
1226 | cfa_temp.offset = cfa.offset | |
770ca8c6 JO |
1227 | |
1228 | Rule 5: | |
1229 | (set <reg1> (plus <reg2>:cfa_temp.reg sp:cfa.reg)) | |
1230 | constraints: <reg1> != fp | |
1231 | <reg1> != sp | |
1232 | effects: cfa_store.reg = <reg1> | |
1233 | cfa_store.offset = cfa.offset - cfa_temp.offset | |
1234 | ||
1235 | Rule 6: | |
1236 | (set <reg> <const_int>) | |
1237 | effects: cfa_temp.reg = <reg> | |
1238 | cfa_temp.offset = <const_int> | |
1239 | ||
1240 | Rule 7: | |
1241 | (set <reg1>:cfa_temp.reg (ior <reg2>:cfa_temp.reg <const_int>)) | |
1242 | effects: cfa_temp.reg = <reg1> | |
1243 | cfa_temp.offset |= <const_int> | |
1244 | ||
1245 | Rule 8: | |
1246 | (set <reg> (high <exp>)) | |
1247 | effects: none | |
1248 | ||
1249 | Rule 9: | |
1250 | (set <reg> (lo_sum <exp> <const_int>)) | |
1251 | effects: cfa_temp.reg = <reg> | |
1252 | cfa_temp.offset = <const_int> | |
1253 | ||
1254 | Rule 10: | |
1255 | (set (mem (pre_modify sp:cfa_store (???? <reg1> <const_int>))) <reg2>) | |
1256 | effects: cfa_store.offset -= <const_int> | |
1257 | cfa.offset = cfa_store.offset if cfa.reg == sp | |
770ca8c6 | 1258 | cfa.reg = sp |
19ec6a36 | 1259 | cfa.base_offset = -cfa_store.offset |
770ca8c6 JO |
1260 | |
1261 | Rule 11: | |
1262 | (set (mem ({pre_inc,pre_dec} sp:cfa_store.reg)) <reg>) | |
1263 | effects: cfa_store.offset += -/+ mode_size(mem) | |
1264 | cfa.offset = cfa_store.offset if cfa.reg == sp | |
770ca8c6 | 1265 | cfa.reg = sp |
19ec6a36 | 1266 | cfa.base_offset = -cfa_store.offset |
770ca8c6 JO |
1267 | |
1268 | Rule 12: | |
2ad9852d RK |
1269 | (set (mem ({minus,plus,losum} <reg1>:{cfa_store,cfa_temp} <const_int>)) |
1270 | ||
1271 | <reg2>) | |
19ec6a36 AM |
1272 | effects: cfa.reg = <reg1> |
1273 | cfa.base_offset = -/+ <const_int> - {cfa_store,cfa_temp}.offset | |
770ca8c6 JO |
1274 | |
1275 | Rule 13: | |
19ec6a36 AM |
1276 | (set (mem <reg1>:{cfa_store,cfa_temp}) <reg2>) |
1277 | effects: cfa.reg = <reg1> | |
1278 | cfa.base_offset = -{cfa_store,cfa_temp}.offset | |
1279 | ||
1280 | Rule 14: | |
1281 | (set (mem (postinc <reg1>:cfa_temp <const_int>)) <reg2>) | |
1282 | effects: cfa.reg = <reg1> | |
1283 | cfa.base_offset = -cfa_temp.offset | |
1284 | cfa_temp.offset -= mode_size(mem) */ | |
b664de3a AM |
1285 | |
1286 | static void | |
1287 | dwarf2out_frame_debug_expr (expr, label) | |
1288 | rtx expr; | |
d3e3972c | 1289 | const char *label; |
b664de3a AM |
1290 | { |
1291 | rtx src, dest; | |
2ad9852d | 1292 | HOST_WIDE_INT offset; |
556273e0 KH |
1293 | |
1294 | /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of | |
1295 | the PARALLEL independently. The first element is always processed if | |
770ca8c6 | 1296 | it is a SET. This is for backward compatibility. Other elements |
556273e0 KH |
1297 | are processed only if they are SETs and the RTX_FRAME_RELATED_P |
1298 | flag is set in them. */ | |
2ad9852d | 1299 | if (GET_CODE (expr) == PARALLEL || GET_CODE (expr) == SEQUENCE) |
556273e0 | 1300 | { |
b664de3a AM |
1301 | int par_index; |
1302 | int limit = XVECLEN (expr, 0); | |
1303 | ||
1304 | for (par_index = 0; par_index < limit; par_index++) | |
2ad9852d RK |
1305 | if (GET_CODE (XVECEXP (expr, 0, par_index)) == SET |
1306 | && (RTX_FRAME_RELATED_P (XVECEXP (expr, 0, par_index)) | |
1307 | || par_index == 0)) | |
1308 | dwarf2out_frame_debug_expr (XVECEXP (expr, 0, par_index), label); | |
556273e0 | 1309 | |
b664de3a AM |
1310 | return; |
1311 | } | |
556273e0 | 1312 | |
b664de3a AM |
1313 | if (GET_CODE (expr) != SET) |
1314 | abort (); | |
1315 | ||
1316 | src = SET_SRC (expr); | |
1317 | dest = SET_DEST (expr); | |
1318 | ||
1319 | switch (GET_CODE (dest)) | |
1320 | { | |
1321 | case REG: | |
770ca8c6 | 1322 | /* Rule 1 */ |
b664de3a AM |
1323 | /* Update the CFA rule wrt SP or FP. Make sure src is |
1324 | relative to the current CFA register. */ | |
1325 | switch (GET_CODE (src)) | |
556273e0 KH |
1326 | { |
1327 | /* Setting FP from SP. */ | |
1328 | case REG: | |
1329 | if (cfa.reg == (unsigned) REGNO (src)) | |
1330 | /* OK. */ | |
1331 | ; | |
626d1efd | 1332 | else |
556273e0 | 1333 | abort (); |
2c849145 JM |
1334 | |
1335 | /* We used to require that dest be either SP or FP, but the | |
1336 | ARM copies SP to a temporary register, and from there to | |
1337 | FP. So we just rely on the backends to only set | |
1338 | RTX_FRAME_RELATED_P on appropriate insns. */ | |
556273e0 | 1339 | cfa.reg = REGNO (dest); |
19ec6a36 AM |
1340 | cfa_temp.reg = cfa.reg; |
1341 | cfa_temp.offset = cfa.offset; | |
556273e0 | 1342 | break; |
b664de3a | 1343 | |
556273e0 KH |
1344 | case PLUS: |
1345 | case MINUS: | |
19ec6a36 | 1346 | case LO_SUM: |
556273e0 KH |
1347 | if (dest == stack_pointer_rtx) |
1348 | { | |
770ca8c6 | 1349 | /* Rule 2 */ |
2618f955 MM |
1350 | /* Adjusting SP. */ |
1351 | switch (GET_CODE (XEXP (src, 1))) | |
1352 | { | |
1353 | case CONST_INT: | |
1354 | offset = INTVAL (XEXP (src, 1)); | |
1355 | break; | |
1356 | case REG: | |
770ca8c6 | 1357 | if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp.reg) |
2618f955 | 1358 | abort (); |
770ca8c6 | 1359 | offset = cfa_temp.offset; |
2618f955 MM |
1360 | break; |
1361 | default: | |
1362 | abort (); | |
1363 | } | |
1364 | ||
1365 | if (XEXP (src, 0) == hard_frame_pointer_rtx) | |
1366 | { | |
1367 | /* Restoring SP from FP in the epilogue. */ | |
7d9d8943 | 1368 | if (cfa.reg != (unsigned) HARD_FRAME_POINTER_REGNUM) |
2618f955 | 1369 | abort (); |
7d9d8943 | 1370 | cfa.reg = STACK_POINTER_REGNUM; |
2618f955 | 1371 | } |
19ec6a36 AM |
1372 | else if (GET_CODE (src) == LO_SUM) |
1373 | /* Assume we've set the source reg of the LO_SUM from sp. */ | |
1374 | ; | |
2618f955 MM |
1375 | else if (XEXP (src, 0) != stack_pointer_rtx) |
1376 | abort (); | |
1377 | ||
19ec6a36 | 1378 | if (GET_CODE (src) != MINUS) |
2618f955 | 1379 | offset = -offset; |
7d9d8943 AM |
1380 | if (cfa.reg == STACK_POINTER_REGNUM) |
1381 | cfa.offset += offset; | |
1382 | if (cfa_store.reg == STACK_POINTER_REGNUM) | |
1383 | cfa_store.offset += offset; | |
556273e0 KH |
1384 | } |
1385 | else if (dest == hard_frame_pointer_rtx) | |
1386 | { | |
770ca8c6 | 1387 | /* Rule 3 */ |
2618f955 MM |
1388 | /* Either setting the FP from an offset of the SP, |
1389 | or adjusting the FP */ | |
2c849145 | 1390 | if (! frame_pointer_needed) |
2618f955 MM |
1391 | abort (); |
1392 | ||
2c849145 | 1393 | if (GET_CODE (XEXP (src, 0)) == REG |
7d9d8943 | 1394 | && (unsigned) REGNO (XEXP (src, 0)) == cfa.reg |
2618f955 MM |
1395 | && GET_CODE (XEXP (src, 1)) == CONST_INT) |
1396 | { | |
2618f955 | 1397 | offset = INTVAL (XEXP (src, 1)); |
19ec6a36 | 1398 | if (GET_CODE (src) != MINUS) |
2618f955 | 1399 | offset = -offset; |
7d9d8943 AM |
1400 | cfa.offset += offset; |
1401 | cfa.reg = HARD_FRAME_POINTER_REGNUM; | |
2618f955 | 1402 | } |
556273e0 KH |
1403 | else |
1404 | abort (); | |
1405 | } | |
1406 | else | |
1407 | { | |
19ec6a36 | 1408 | if (GET_CODE (src) == MINUS) |
2618f955 | 1409 | abort (); |
b53ef1a2 | 1410 | |
770ca8c6 | 1411 | /* Rule 4 */ |
b53ef1a2 NC |
1412 | if (GET_CODE (XEXP (src, 0)) == REG |
1413 | && REGNO (XEXP (src, 0)) == cfa.reg | |
1414 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
34ce3d7b JM |
1415 | { |
1416 | /* Setting a temporary CFA register that will be copied | |
1417 | into the FP later on. */ | |
19ec6a36 | 1418 | offset = - INTVAL (XEXP (src, 1)); |
34ce3d7b JM |
1419 | cfa.offset += offset; |
1420 | cfa.reg = REGNO (dest); | |
19ec6a36 AM |
1421 | /* Or used to save regs to the stack. */ |
1422 | cfa_temp.reg = cfa.reg; | |
1423 | cfa_temp.offset = cfa.offset; | |
34ce3d7b | 1424 | } |
2ad9852d | 1425 | |
770ca8c6 | 1426 | /* Rule 5 */ |
19ec6a36 AM |
1427 | else if (GET_CODE (XEXP (src, 0)) == REG |
1428 | && REGNO (XEXP (src, 0)) == cfa_temp.reg | |
1429 | && XEXP (src, 1) == stack_pointer_rtx) | |
b53ef1a2 | 1430 | { |
00a42e21 JM |
1431 | /* Setting a scratch register that we will use instead |
1432 | of SP for saving registers to the stack. */ | |
b53ef1a2 NC |
1433 | if (cfa.reg != STACK_POINTER_REGNUM) |
1434 | abort (); | |
1435 | cfa_store.reg = REGNO (dest); | |
770ca8c6 | 1436 | cfa_store.offset = cfa.offset - cfa_temp.offset; |
b53ef1a2 | 1437 | } |
2ad9852d | 1438 | |
19ec6a36 AM |
1439 | /* Rule 9 */ |
1440 | else if (GET_CODE (src) == LO_SUM | |
1441 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1442 | { | |
1443 | cfa_temp.reg = REGNO (dest); | |
1444 | cfa_temp.offset = INTVAL (XEXP (src, 1)); | |
1445 | } | |
1446 | else | |
1447 | abort (); | |
556273e0 KH |
1448 | } |
1449 | break; | |
b664de3a | 1450 | |
770ca8c6 | 1451 | /* Rule 6 */ |
556273e0 | 1452 | case CONST_INT: |
770ca8c6 JO |
1453 | cfa_temp.reg = REGNO (dest); |
1454 | cfa_temp.offset = INTVAL (src); | |
556273e0 | 1455 | break; |
b664de3a | 1456 | |
770ca8c6 | 1457 | /* Rule 7 */ |
556273e0 KH |
1458 | case IOR: |
1459 | if (GET_CODE (XEXP (src, 0)) != REG | |
770ca8c6 | 1460 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp.reg |
2618f955 | 1461 | || GET_CODE (XEXP (src, 1)) != CONST_INT) |
556273e0 | 1462 | abort (); |
2ad9852d | 1463 | |
770ca8c6 JO |
1464 | if ((unsigned) REGNO (dest) != cfa_temp.reg) |
1465 | cfa_temp.reg = REGNO (dest); | |
1466 | cfa_temp.offset |= INTVAL (XEXP (src, 1)); | |
556273e0 | 1467 | break; |
b664de3a | 1468 | |
9ae21d2a AM |
1469 | /* Skip over HIGH, assuming it will be followed by a LO_SUM, |
1470 | which will fill in all of the bits. */ | |
1471 | /* Rule 8 */ | |
1472 | case HIGH: | |
1473 | break; | |
1474 | ||
556273e0 KH |
1475 | default: |
1476 | abort (); | |
1477 | } | |
2ad9852d | 1478 | |
7d9d8943 | 1479 | def_cfa_1 (label, &cfa); |
2618f955 | 1480 | break; |
b664de3a | 1481 | |
2618f955 | 1482 | case MEM: |
2618f955 MM |
1483 | if (GET_CODE (src) != REG) |
1484 | abort (); | |
7d9d8943 | 1485 | |
7d9d8943 AM |
1486 | /* Saving a register to the stack. Make sure dest is relative to the |
1487 | CFA register. */ | |
2618f955 MM |
1488 | switch (GET_CODE (XEXP (dest, 0))) |
1489 | { | |
770ca8c6 | 1490 | /* Rule 10 */ |
2618f955 | 1491 | /* With a push. */ |
e2134eea JH |
1492 | case PRE_MODIFY: |
1493 | /* We can't handle variable size modifications. */ | |
1494 | if (GET_CODE (XEXP (XEXP (XEXP (dest, 0), 1), 1)) != CONST_INT) | |
173bf5be | 1495 | abort (); |
e2134eea JH |
1496 | offset = -INTVAL (XEXP (XEXP (XEXP (dest, 0), 1), 1)); |
1497 | ||
1498 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM | |
1499 | || cfa_store.reg != STACK_POINTER_REGNUM) | |
1500 | abort (); | |
2ad9852d | 1501 | |
e2134eea JH |
1502 | cfa_store.offset += offset; |
1503 | if (cfa.reg == STACK_POINTER_REGNUM) | |
1504 | cfa.offset = cfa_store.offset; | |
1505 | ||
1506 | offset = -cfa_store.offset; | |
1507 | break; | |
2ad9852d | 1508 | |
770ca8c6 | 1509 | /* Rule 11 */ |
2618f955 MM |
1510 | case PRE_INC: |
1511 | case PRE_DEC: | |
1512 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1513 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) | |
1514 | offset = -offset; | |
b664de3a | 1515 | |
2618f955 | 1516 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
7d9d8943 | 1517 | || cfa_store.reg != STACK_POINTER_REGNUM) |
2618f955 | 1518 | abort (); |
2ad9852d | 1519 | |
7d9d8943 AM |
1520 | cfa_store.offset += offset; |
1521 | if (cfa.reg == STACK_POINTER_REGNUM) | |
1522 | cfa.offset = cfa_store.offset; | |
b664de3a | 1523 | |
7d9d8943 | 1524 | offset = -cfa_store.offset; |
2618f955 | 1525 | break; |
b664de3a | 1526 | |
770ca8c6 | 1527 | /* Rule 12 */ |
2618f955 MM |
1528 | /* With an offset. */ |
1529 | case PLUS: | |
1530 | case MINUS: | |
19ec6a36 | 1531 | case LO_SUM: |
770ca8c6 JO |
1532 | if (GET_CODE (XEXP (XEXP (dest, 0), 1)) != CONST_INT) |
1533 | abort (); | |
2618f955 MM |
1534 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); |
1535 | if (GET_CODE (XEXP (dest, 0)) == MINUS) | |
1536 | offset = -offset; | |
b664de3a | 1537 | |
19ec6a36 AM |
1538 | if (cfa_store.reg == (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) |
1539 | offset -= cfa_store.offset; | |
1540 | else if (cfa_temp.reg == (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) | |
1541 | offset -= cfa_temp.offset; | |
1542 | else | |
2618f955 | 1543 | abort (); |
2618f955 MM |
1544 | break; |
1545 | ||
770ca8c6 | 1546 | /* Rule 13 */ |
2618f955 MM |
1547 | /* Without an offset. */ |
1548 | case REG: | |
19ec6a36 AM |
1549 | if (cfa_store.reg == (unsigned) REGNO (XEXP (dest, 0))) |
1550 | offset = -cfa_store.offset; | |
1551 | else if (cfa_temp.reg == (unsigned) REGNO (XEXP (dest, 0))) | |
1552 | offset = -cfa_temp.offset; | |
1553 | else | |
556273e0 | 1554 | abort (); |
19ec6a36 AM |
1555 | break; |
1556 | ||
1557 | /* Rule 14 */ | |
1558 | case POST_INC: | |
1559 | if (cfa_temp.reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) | |
1560 | abort (); | |
1561 | offset = -cfa_temp.offset; | |
1562 | cfa_temp.offset -= GET_MODE_SIZE (GET_MODE (dest)); | |
2618f955 MM |
1563 | break; |
1564 | ||
1565 | default: | |
1566 | abort (); | |
1567 | } | |
e09bbb25 | 1568 | |
556273e0 | 1569 | if (REGNO (src) != STACK_POINTER_REGNUM |
e09bbb25 JM |
1570 | && REGNO (src) != HARD_FRAME_POINTER_REGNUM |
1571 | && (unsigned) REGNO (src) == cfa.reg) | |
1572 | { | |
1573 | /* We're storing the current CFA reg into the stack. */ | |
1574 | ||
1575 | if (cfa.offset == 0) | |
1576 | { | |
1577 | /* If the source register is exactly the CFA, assume | |
1578 | we're saving SP like any other register; this happens | |
1579 | on the ARM. */ | |
e09bbb25 | 1580 | def_cfa_1 (label, &cfa); |
fbfa55b0 | 1581 | queue_reg_save (label, stack_pointer_rtx, offset); |
e09bbb25 JM |
1582 | break; |
1583 | } | |
1584 | else | |
1585 | { | |
1586 | /* Otherwise, we'll need to look in the stack to | |
1587 | calculate the CFA. */ | |
e09bbb25 | 1588 | rtx x = XEXP (dest, 0); |
2ad9852d | 1589 | |
e09bbb25 JM |
1590 | if (GET_CODE (x) != REG) |
1591 | x = XEXP (x, 0); | |
1592 | if (GET_CODE (x) != REG) | |
1593 | abort (); | |
2ad9852d RK |
1594 | |
1595 | cfa.reg = REGNO (x); | |
e09bbb25 JM |
1596 | cfa.base_offset = offset; |
1597 | cfa.indirect = 1; | |
1598 | def_cfa_1 (label, &cfa); | |
1599 | break; | |
1600 | } | |
1601 | } | |
1602 | ||
7d9d8943 | 1603 | def_cfa_1 (label, &cfa); |
fbfa55b0 | 1604 | queue_reg_save (label, src, offset); |
2618f955 MM |
1605 | break; |
1606 | ||
1607 | default: | |
1608 | abort (); | |
1609 | } | |
b664de3a AM |
1610 | } |
1611 | ||
3f76745e JM |
1612 | /* Record call frame debugging information for INSN, which either |
1613 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1614 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1615 | |
3f76745e JM |
1616 | void |
1617 | dwarf2out_frame_debug (insn) | |
1618 | rtx insn; | |
a3f97cbb | 1619 | { |
d3e3972c | 1620 | const char *label; |
b664de3a | 1621 | rtx src; |
3f76745e JM |
1622 | |
1623 | if (insn == NULL_RTX) | |
a3f97cbb | 1624 | { |
fbfa55b0 RH |
1625 | /* Flush any queued register saves. */ |
1626 | flush_queued_reg_saves (); | |
1627 | ||
3f76745e | 1628 | /* Set up state for generating call frame debug info. */ |
7d9d8943 AM |
1629 | lookup_cfa (&cfa); |
1630 | if (cfa.reg != (unsigned long) DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) | |
3a88cbd1 | 1631 | abort (); |
2ad9852d | 1632 | |
7d9d8943 AM |
1633 | cfa.reg = STACK_POINTER_REGNUM; |
1634 | cfa_store = cfa; | |
770ca8c6 JO |
1635 | cfa_temp.reg = -1; |
1636 | cfa_temp.offset = 0; | |
3f76745e JM |
1637 | return; |
1638 | } | |
1639 | ||
fbfa55b0 RH |
1640 | if (GET_CODE (insn) != INSN || clobbers_queued_reg_save (insn)) |
1641 | flush_queued_reg_saves (); | |
1642 | ||
0021b564 JM |
1643 | if (! RTX_FRAME_RELATED_P (insn)) |
1644 | { | |
fbfa55b0 | 1645 | if (!ACCUMULATE_OUTGOING_ARGS) |
c26fbbca | 1646 | dwarf2out_stack_adjust (insn); |
2ad9852d | 1647 | |
0021b564 JM |
1648 | return; |
1649 | } | |
1650 | ||
3f76745e | 1651 | label = dwarf2out_cfi_label (); |
07ebc930 RH |
1652 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1653 | if (src) | |
1654 | insn = XEXP (src, 0); | |
556273e0 | 1655 | else |
07ebc930 RH |
1656 | insn = PATTERN (insn); |
1657 | ||
b664de3a | 1658 | dwarf2out_frame_debug_expr (insn, label); |
3f76745e JM |
1659 | } |
1660 | ||
3f76745e JM |
1661 | /* Output a Call Frame Information opcode and its operand(s). */ |
1662 | ||
1663 | static void | |
12f0b96b | 1664 | output_cfi (cfi, fde, for_eh) |
b3694847 SS |
1665 | dw_cfi_ref cfi; |
1666 | dw_fde_ref fde; | |
12f0b96b | 1667 | int for_eh; |
3f76745e JM |
1668 | { |
1669 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
2ad9852d RK |
1670 | dw2_asm_output_data (1, (cfi->dw_cfi_opc |
1671 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)), | |
1672 | "DW_CFA_advance_loc 0x%lx", | |
1673 | cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
3f76745e JM |
1674 | else if (cfi->dw_cfi_opc == DW_CFA_offset) |
1675 | { | |
2e4b9b8c RH |
1676 | dw2_asm_output_data (1, (cfi->dw_cfi_opc |
1677 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)), | |
1678 | "DW_CFA_offset, column 0x%lx", | |
1679 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1680 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL); | |
3f76745e JM |
1681 | } |
1682 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
2ad9852d RK |
1683 | dw2_asm_output_data (1, (cfi->dw_cfi_opc |
1684 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)), | |
1685 | "DW_CFA_restore, column 0x%lx", | |
1686 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
3f76745e JM |
1687 | else |
1688 | { | |
2e4b9b8c RH |
1689 | dw2_asm_output_data (1, cfi->dw_cfi_opc, |
1690 | "%s", dwarf_cfi_name (cfi->dw_cfi_opc)); | |
3f76745e | 1691 | |
3f76745e JM |
1692 | switch (cfi->dw_cfi_opc) |
1693 | { | |
1694 | case DW_CFA_set_loc: | |
e1f9550a RH |
1695 | if (for_eh) |
1696 | dw2_asm_output_encoded_addr_rtx ( | |
1697 | ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0), | |
1698 | gen_rtx_SYMBOL_REF (Pmode, cfi->dw_cfi_oprnd1.dw_cfi_addr), | |
1699 | NULL); | |
1700 | else | |
1701 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, | |
1702 | cfi->dw_cfi_oprnd1.dw_cfi_addr, NULL); | |
3f76745e | 1703 | break; |
2ad9852d | 1704 | |
3f76745e | 1705 | case DW_CFA_advance_loc1: |
2e4b9b8c RH |
1706 | dw2_asm_output_delta (1, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1707 | fde->dw_fde_current_label, NULL); | |
bb727b5a | 1708 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
3f76745e | 1709 | break; |
2ad9852d | 1710 | |
3f76745e | 1711 | case DW_CFA_advance_loc2: |
2e4b9b8c RH |
1712 | dw2_asm_output_delta (2, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1713 | fde->dw_fde_current_label, NULL); | |
3f76745e JM |
1714 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
1715 | break; | |
2ad9852d | 1716 | |
3f76745e | 1717 | case DW_CFA_advance_loc4: |
2e4b9b8c RH |
1718 | dw2_asm_output_delta (4, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1719 | fde->dw_fde_current_label, NULL); | |
3f76745e JM |
1720 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
1721 | break; | |
2ad9852d | 1722 | |
3f76745e | 1723 | case DW_CFA_MIPS_advance_loc8: |
2e4b9b8c RH |
1724 | dw2_asm_output_delta (8, cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1725 | fde->dw_fde_current_label, NULL); | |
1726 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e | 1727 | break; |
2ad9852d | 1728 | |
3f76745e JM |
1729 | case DW_CFA_offset_extended: |
1730 | case DW_CFA_def_cfa: | |
2ad9852d RK |
1731 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, |
1732 | NULL); | |
2e4b9b8c | 1733 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL); |
3f76745e | 1734 | break; |
2ad9852d | 1735 | |
6bb28965 JM |
1736 | case DW_CFA_offset_extended_sf: |
1737 | case DW_CFA_def_cfa_sf: | |
1738 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, | |
1739 | NULL); | |
1740 | dw2_asm_output_data_sleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL); | |
1741 | break; | |
1742 | ||
3f76745e JM |
1743 | case DW_CFA_restore_extended: |
1744 | case DW_CFA_undefined: | |
3f76745e JM |
1745 | case DW_CFA_same_value: |
1746 | case DW_CFA_def_cfa_register: | |
2ad9852d RK |
1747 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, |
1748 | NULL); | |
3f76745e | 1749 | break; |
2ad9852d | 1750 | |
3f76745e | 1751 | case DW_CFA_register: |
2ad9852d RK |
1752 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, |
1753 | NULL); | |
1754 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num, | |
1755 | NULL); | |
3f76745e | 1756 | break; |
2ad9852d | 1757 | |
3f76745e | 1758 | case DW_CFA_def_cfa_offset: |
2e4b9b8c RH |
1759 | case DW_CFA_GNU_args_size: |
1760 | dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset, NULL); | |
3f76745e | 1761 | break; |
2ad9852d | 1762 | |
6bb28965 JM |
1763 | case DW_CFA_def_cfa_offset_sf: |
1764 | dw2_asm_output_data_sleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset, NULL); | |
1765 | break; | |
1766 | ||
c53aa195 JM |
1767 | case DW_CFA_GNU_window_save: |
1768 | break; | |
2ad9852d | 1769 | |
7d9d8943 | 1770 | case DW_CFA_def_cfa_expression: |
6bb28965 | 1771 | case DW_CFA_expression: |
7d9d8943 AM |
1772 | output_cfa_loc (cfi); |
1773 | break; | |
2ad9852d | 1774 | |
6bb28965 JM |
1775 | case DW_CFA_GNU_negative_offset_extended: |
1776 | /* Obsoleted by DW_CFA_offset_extended_sf. */ | |
1777 | abort (); | |
1778 | ||
3f76745e JM |
1779 | default: |
1780 | break; | |
1781 | } | |
556273e0 | 1782 | } |
3f76745e JM |
1783 | } |
1784 | ||
1785 | /* Output the call frame information used to used to record information | |
1786 | that relates to calculating the frame pointer, and records the | |
1787 | location of saved registers. */ | |
1788 | ||
1789 | static void | |
1790 | output_call_frame_info (for_eh) | |
1791 | int for_eh; | |
1792 | { | |
b3694847 SS |
1793 | unsigned int i; |
1794 | dw_fde_ref fde; | |
1795 | dw_cfi_ref cfi; | |
27d95cbe | 1796 | char l1[20], l2[20], section_start_label[20]; |
52a11cbf RH |
1797 | int any_lsda_needed = 0; |
1798 | char augmentation[6]; | |
e1f9550a RH |
1799 | int augmentation_size; |
1800 | int fde_encoding = DW_EH_PE_absptr; | |
1801 | int per_encoding = DW_EH_PE_absptr; | |
1802 | int lsda_encoding = DW_EH_PE_absptr; | |
3f76745e | 1803 | |
29b91443 JM |
1804 | /* Don't emit a CIE if there won't be any FDEs. */ |
1805 | if (fde_table_in_use == 0) | |
1806 | return; | |
1807 | ||
2ad9852d RK |
1808 | /* If we don't have any functions we'll want to unwind out of, don't emit any |
1809 | EH unwind information. */ | |
737faf14 JM |
1810 | if (for_eh) |
1811 | { | |
b932f770 | 1812 | int any_eh_needed = flag_asynchronous_unwind_tables; |
2ad9852d RK |
1813 | |
1814 | for (i = 0; i < fde_table_in_use; i++) | |
52a11cbf RH |
1815 | if (fde_table[i].uses_eh_lsda) |
1816 | any_eh_needed = any_lsda_needed = 1; | |
1817 | else if (! fde_table[i].nothrow) | |
1818 | any_eh_needed = 1; | |
1819 | ||
1820 | if (! any_eh_needed) | |
1821 | return; | |
737faf14 JM |
1822 | } |
1823 | ||
aa0c1401 JL |
1824 | /* We're going to be generating comments, so turn on app. */ |
1825 | if (flag_debug_asm) | |
1826 | app_enable (); | |
956d6950 | 1827 | |
3f76745e | 1828 | if (for_eh) |
07c9d2eb | 1829 | (*targetm.asm_out.eh_frame_section) (); |
3f76745e | 1830 | else |
715bdd29 | 1831 | named_section_flags (DEBUG_FRAME_SECTION, SECTION_DEBUG); |
3f76745e | 1832 | |
27d95cbe RH |
1833 | ASM_GENERATE_INTERNAL_LABEL (section_start_label, FRAME_BEGIN_LABEL, for_eh); |
1834 | ASM_OUTPUT_LABEL (asm_out_file, section_start_label); | |
1835 | ||
556273e0 | 1836 | /* Output the CIE. */ |
a6ab3aad JM |
1837 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1838 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2e4b9b8c RH |
1839 | dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1, |
1840 | "Length of Common Information Entry"); | |
a6ab3aad JM |
1841 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1842 | ||
2e4b9b8c RH |
1843 | /* Now that the CIE pointer is PC-relative for EH, |
1844 | use 0 to identify the CIE. */ | |
1845 | dw2_asm_output_data ((for_eh ? 4 : DWARF_OFFSET_SIZE), | |
1846 | (for_eh ? 0 : DW_CIE_ID), | |
1847 | "CIE Identifier Tag"); | |
3f76745e | 1848 | |
2e4b9b8c | 1849 | dw2_asm_output_data (1, DW_CIE_VERSION, "CIE Version"); |
3f76745e | 1850 | |
52a11cbf | 1851 | augmentation[0] = 0; |
e1f9550a | 1852 | augmentation_size = 0; |
52a11cbf | 1853 | if (for_eh) |
a6ab3aad | 1854 | { |
e1f9550a RH |
1855 | char *p; |
1856 | ||
52a11cbf RH |
1857 | /* Augmentation: |
1858 | z Indicates that a uleb128 is present to size the | |
1859 | augmentation section. | |
e1f9550a RH |
1860 | L Indicates the encoding (and thus presence) of |
1861 | an LSDA pointer in the FDE augmentation. | |
1862 | R Indicates a non-default pointer encoding for | |
1863 | FDE code pointers. | |
1864 | P Indicates the presence of an encoding + language | |
1865 | personality routine in the CIE augmentation. */ | |
1866 | ||
1867 | fde_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0); | |
1868 | per_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/2, /*global=*/1); | |
1869 | lsda_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/0); | |
1870 | ||
1871 | p = augmentation + 1; | |
1872 | if (eh_personality_libfunc) | |
1873 | { | |
1874 | *p++ = 'P'; | |
1875 | augmentation_size += 1 + size_of_encoded_value (per_encoding); | |
1876 | } | |
52a11cbf | 1877 | if (any_lsda_needed) |
e1f9550a RH |
1878 | { |
1879 | *p++ = 'L'; | |
1880 | augmentation_size += 1; | |
1881 | } | |
1882 | if (fde_encoding != DW_EH_PE_absptr) | |
1883 | { | |
1884 | *p++ = 'R'; | |
1885 | augmentation_size += 1; | |
1886 | } | |
1887 | if (p > augmentation + 1) | |
1888 | { | |
1889 | augmentation[0] = 'z'; | |
c26fbbca | 1890 | *p = '\0'; |
e1f9550a | 1891 | } |
099c8b17 RH |
1892 | |
1893 | /* Ug. Some platforms can't do unaligned dynamic relocations at all. */ | |
1894 | if (eh_personality_libfunc && per_encoding == DW_EH_PE_aligned) | |
1895 | { | |
1896 | int offset = ( 4 /* Length */ | |
1897 | + 4 /* CIE Id */ | |
1898 | + 1 /* CIE version */ | |
1899 | + strlen (augmentation) + 1 /* Augmentation */ | |
1900 | + size_of_uleb128 (1) /* Code alignment */ | |
1901 | + size_of_sleb128 (DWARF_CIE_DATA_ALIGNMENT) | |
1902 | + 1 /* RA column */ | |
1903 | + 1 /* Augmentation size */ | |
1904 | + 1 /* Personality encoding */ ); | |
1905 | int pad = -offset & (PTR_SIZE - 1); | |
1906 | ||
1907 | augmentation_size += pad; | |
1908 | ||
1909 | /* Augmentations should be small, so there's scarce need to | |
1910 | iterate for a solution. Die if we exceed one uleb128 byte. */ | |
1911 | if (size_of_uleb128 (augmentation_size) != 1) | |
1912 | abort (); | |
1913 | } | |
a6ab3aad | 1914 | } |
3f76745e | 1915 | |
2ad9852d | 1916 | dw2_asm_output_nstring (augmentation, -1, "CIE Augmentation"); |
2e4b9b8c | 1917 | dw2_asm_output_data_uleb128 (1, "CIE Code Alignment Factor"); |
2e4b9b8c RH |
1918 | dw2_asm_output_data_sleb128 (DWARF_CIE_DATA_ALIGNMENT, |
1919 | "CIE Data Alignment Factor"); | |
2e4b9b8c | 1920 | dw2_asm_output_data (1, DWARF_FRAME_RETURN_COLUMN, "CIE RA Column"); |
3f76745e | 1921 | |
52a11cbf RH |
1922 | if (augmentation[0]) |
1923 | { | |
e1f9550a | 1924 | dw2_asm_output_data_uleb128 (augmentation_size, "Augmentation size"); |
52a11cbf | 1925 | if (eh_personality_libfunc) |
e1f9550a RH |
1926 | { |
1927 | dw2_asm_output_data (1, per_encoding, "Personality (%s)", | |
1928 | eh_data_format_name (per_encoding)); | |
1929 | dw2_asm_output_encoded_addr_rtx (per_encoding, | |
1930 | eh_personality_libfunc, NULL); | |
1931 | } | |
2ad9852d | 1932 | |
e1f9550a RH |
1933 | if (any_lsda_needed) |
1934 | dw2_asm_output_data (1, lsda_encoding, "LSDA Encoding (%s)", | |
1935 | eh_data_format_name (lsda_encoding)); | |
2ad9852d | 1936 | |
e1f9550a RH |
1937 | if (fde_encoding != DW_EH_PE_absptr) |
1938 | dw2_asm_output_data (1, fde_encoding, "FDE Encoding (%s)", | |
1939 | eh_data_format_name (fde_encoding)); | |
52a11cbf RH |
1940 | } |
1941 | ||
3f76745e | 1942 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) |
12f0b96b | 1943 | output_cfi (cfi, NULL, for_eh); |
3f76745e JM |
1944 | |
1945 | /* Pad the CIE out to an address sized boundary. */ | |
c26fbbca | 1946 | ASM_OUTPUT_ALIGN (asm_out_file, |
12f0b96b | 1947 | floor_log2 (for_eh ? PTR_SIZE : DWARF2_ADDR_SIZE)); |
a6ab3aad | 1948 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
3f76745e JM |
1949 | |
1950 | /* Loop through all of the FDE's. */ | |
2ad9852d | 1951 | for (i = 0; i < fde_table_in_use; i++) |
3f76745e JM |
1952 | { |
1953 | fde = &fde_table[i]; | |
3f76745e | 1954 | |
52a11cbf | 1955 | /* Don't emit EH unwind info for leaf functions that don't need it. */ |
b6128b8c SH |
1956 | if (!flag_asynchronous_unwind_tables && for_eh |
1957 | && (fde->nothrow || fde->all_throwers_are_sibcalls) | |
1958 | && !fde->uses_eh_lsda) | |
737faf14 JM |
1959 | continue; |
1960 | ||
2e4b9b8c | 1961 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, FDE_LABEL, for_eh + i * 2); |
556273e0 KH |
1962 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i * 2); |
1963 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i * 2); | |
2e4b9b8c RH |
1964 | dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1, |
1965 | "FDE Length"); | |
a6ab3aad JM |
1966 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1967 | ||
3f76745e | 1968 | if (for_eh) |
27d95cbe | 1969 | dw2_asm_output_delta (4, l1, section_start_label, "FDE CIE offset"); |
3f76745e | 1970 | else |
27d95cbe | 1971 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, section_start_label, |
2e4b9b8c | 1972 | "FDE CIE offset"); |
3f76745e | 1973 | |
e1f9550a RH |
1974 | if (for_eh) |
1975 | { | |
1976 | dw2_asm_output_encoded_addr_rtx (fde_encoding, | |
1977 | gen_rtx_SYMBOL_REF (Pmode, fde->dw_fde_begin), | |
1978 | "FDE initial location"); | |
1979 | dw2_asm_output_delta (size_of_encoded_value (fde_encoding), | |
c26fbbca | 1980 | fde->dw_fde_end, fde->dw_fde_begin, |
e1f9550a RH |
1981 | "FDE address range"); |
1982 | } | |
1983 | else | |
1984 | { | |
1985 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, fde->dw_fde_begin, | |
1986 | "FDE initial location"); | |
c26fbbca KH |
1987 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, |
1988 | fde->dw_fde_end, fde->dw_fde_begin, | |
e1f9550a RH |
1989 | "FDE address range"); |
1990 | } | |
3f76745e | 1991 | |
52a11cbf RH |
1992 | if (augmentation[0]) |
1993 | { | |
e1f9550a | 1994 | if (any_lsda_needed) |
52a11cbf | 1995 | { |
099c8b17 RH |
1996 | int size = size_of_encoded_value (lsda_encoding); |
1997 | ||
1998 | if (lsda_encoding == DW_EH_PE_aligned) | |
1999 | { | |
2000 | int offset = ( 4 /* Length */ | |
2001 | + 4 /* CIE offset */ | |
2002 | + 2 * size_of_encoded_value (fde_encoding) | |
2003 | + 1 /* Augmentation size */ ); | |
2004 | int pad = -offset & (PTR_SIZE - 1); | |
2005 | ||
2006 | size += pad; | |
2007 | if (size_of_uleb128 (size) != 1) | |
2008 | abort (); | |
2009 | } | |
2010 | ||
2011 | dw2_asm_output_data_uleb128 (size, "Augmentation size"); | |
e1f9550a RH |
2012 | |
2013 | if (fde->uses_eh_lsda) | |
2014 | { | |
2015 | ASM_GENERATE_INTERNAL_LABEL (l1, "LLSDA", | |
2016 | fde->funcdef_number); | |
2017 | dw2_asm_output_encoded_addr_rtx ( | |
2018 | lsda_encoding, gen_rtx_SYMBOL_REF (Pmode, l1), | |
2019 | "Language Specific Data Area"); | |
2020 | } | |
2021 | else | |
099c8b17 RH |
2022 | { |
2023 | if (lsda_encoding == DW_EH_PE_aligned) | |
2024 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
2ad9852d RK |
2025 | dw2_asm_output_data |
2026 | (size_of_encoded_value (lsda_encoding), 0, | |
2027 | "Language Specific Data Area (none)"); | |
099c8b17 | 2028 | } |
52a11cbf RH |
2029 | } |
2030 | else | |
e1f9550a | 2031 | dw2_asm_output_data_uleb128 (0, "Augmentation size"); |
52a11cbf RH |
2032 | } |
2033 | ||
3f76745e JM |
2034 | /* Loop through the Call Frame Instructions associated with |
2035 | this FDE. */ | |
2036 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
2037 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
12f0b96b | 2038 | output_cfi (cfi, fde, for_eh); |
3f76745e | 2039 | |
a6ab3aad | 2040 | /* Pad the FDE out to an address sized boundary. */ |
c26fbbca | 2041 | ASM_OUTPUT_ALIGN (asm_out_file, |
e1f9550a | 2042 | floor_log2 ((for_eh ? PTR_SIZE : DWARF2_ADDR_SIZE))); |
a6ab3aad | 2043 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
3f76745e | 2044 | } |
2e4b9b8c | 2045 | |
7606e68f | 2046 | if (for_eh && targetm.terminate_dw2_eh_frame_info) |
2e4b9b8c | 2047 | dw2_asm_output_data (4, 0, "End of Table"); |
a6ab3aad JM |
2048 | #ifdef MIPS_DEBUGGING_INFO |
2049 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
2050 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
2051 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
2052 | #endif | |
aa0c1401 JL |
2053 | |
2054 | /* Turn off app to make assembly quicker. */ | |
2055 | if (flag_debug_asm) | |
2056 | app_disable (); | |
a6ab3aad JM |
2057 | } |
2058 | ||
3f76745e JM |
2059 | /* Output a marker (i.e. a label) for the beginning of a function, before |
2060 | the prologue. */ | |
2061 | ||
2062 | void | |
653e276c NB |
2063 | dwarf2out_begin_prologue (line, file) |
2064 | unsigned int line ATTRIBUTE_UNUSED; | |
2065 | const char *file ATTRIBUTE_UNUSED; | |
3f76745e JM |
2066 | { |
2067 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
b3694847 | 2068 | dw_fde_ref fde; |
3f76745e | 2069 | |
2a1ee410 RH |
2070 | current_function_func_begin_label = 0; |
2071 | ||
2072 | #ifdef IA64_UNWIND_INFO | |
2073 | /* ??? current_function_func_begin_label is also used by except.c | |
2074 | for call-site information. We must emit this label if it might | |
2075 | be used. */ | |
2076 | if ((! flag_exceptions || USING_SJLJ_EXCEPTIONS) | |
2077 | && ! dwarf2out_do_frame ()) | |
2078 | return; | |
2079 | #else | |
2080 | if (! dwarf2out_do_frame ()) | |
2081 | return; | |
2082 | #endif | |
2083 | ||
3f76745e JM |
2084 | function_section (current_function_decl); |
2085 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
df696a75 | 2086 | current_function_funcdef_no); |
2a1ee410 | 2087 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, FUNC_BEGIN_LABEL, |
df696a75 | 2088 | current_function_funcdef_no); |
00262c8a | 2089 | current_function_func_begin_label = get_identifier (label); |
3f76745e | 2090 | |
2a1ee410 RH |
2091 | #ifdef IA64_UNWIND_INFO |
2092 | /* We can elide the fde allocation if we're not emitting debug info. */ | |
2093 | if (! dwarf2out_do_frame ()) | |
2094 | return; | |
2095 | #endif | |
2096 | ||
3f76745e JM |
2097 | /* Expand the fde table if necessary. */ |
2098 | if (fde_table_in_use == fde_table_allocated) | |
2099 | { | |
2100 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
2101 | fde_table | |
2102 | = (dw_fde_ref) xrealloc (fde_table, | |
2103 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 2104 | } |
3f76745e JM |
2105 | |
2106 | /* Record the FDE associated with this function. */ | |
2107 | current_funcdef_fde = fde_table_in_use; | |
2108 | ||
2109 | /* Add the new FDE at the end of the fde_table. */ | |
2110 | fde = &fde_table[fde_table_in_use++]; | |
2111 | fde->dw_fde_begin = xstrdup (label); | |
2112 | fde->dw_fde_current_label = NULL; | |
2113 | fde->dw_fde_end = NULL; | |
2114 | fde->dw_fde_cfi = NULL; | |
df696a75 | 2115 | fde->funcdef_number = current_function_funcdef_no; |
fb13d4d0 | 2116 | fde->nothrow = current_function_nothrow; |
52a11cbf | 2117 | fde->uses_eh_lsda = cfun->uses_eh_lsda; |
b6128b8c | 2118 | fde->all_throwers_are_sibcalls = cfun->all_throwers_are_sibcalls; |
737faf14 | 2119 | |
b57d9225 | 2120 | args_size = old_args_size = 0; |
653e276c | 2121 | |
2ad9852d RK |
2122 | /* We only want to output line number information for the genuine dwarf2 |
2123 | prologue case, not the eh frame case. */ | |
653e276c NB |
2124 | #ifdef DWARF2_DEBUGGING_INFO |
2125 | if (file) | |
2126 | dwarf2out_source_line (line, file); | |
2127 | #endif | |
3f76745e JM |
2128 | } |
2129 | ||
2130 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
2131 | for a function definition. This gets called *after* the epilogue code has | |
2132 | been generated. */ | |
2133 | ||
2134 | void | |
702ada3d DR |
2135 | dwarf2out_end_epilogue (line, file) |
2136 | unsigned int line ATTRIBUTE_UNUSED; | |
2137 | const char *file ATTRIBUTE_UNUSED; | |
3f76745e JM |
2138 | { |
2139 | dw_fde_ref fde; | |
2140 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2141 | ||
2142 | /* Output a label to mark the endpoint of the code generated for this | |
3ef42a0c | 2143 | function. */ |
df696a75 RH |
2144 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, |
2145 | current_function_funcdef_no); | |
3f76745e JM |
2146 | ASM_OUTPUT_LABEL (asm_out_file, label); |
2147 | fde = &fde_table[fde_table_in_use - 1]; | |
2148 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
2149 | } |
2150 | ||
2151 | void | |
2152 | dwarf2out_frame_init () | |
2153 | { | |
2154 | /* Allocate the initial hunk of the fde_table. */ | |
3de90026 | 2155 | fde_table = (dw_fde_ref) xcalloc (FDE_TABLE_INCREMENT, sizeof (dw_fde_node)); |
3f76745e JM |
2156 | fde_table_allocated = FDE_TABLE_INCREMENT; |
2157 | fde_table_in_use = 0; | |
2158 | ||
2159 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
2160 | sake of lookup_cfa. */ | |
2161 | ||
a6ab3aad | 2162 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
2163 | /* On entry, the Canonical Frame Address is at SP. */ |
2164 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
2165 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
2166 | #endif |
2167 | } | |
2168 | ||
2169 | void | |
2170 | dwarf2out_frame_finish () | |
2171 | { | |
3f76745e | 2172 | /* Output call frame information. */ |
7a0c8d71 | 2173 | if (write_symbols == DWARF2_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) |
3f76745e | 2174 | output_call_frame_info (0); |
2ad9852d | 2175 | |
ddee9e8d | 2176 | if (! USING_SJLJ_EXCEPTIONS && (flag_unwind_tables || flag_exceptions)) |
3f76745e | 2177 | output_call_frame_info (1); |
556273e0 | 2178 | } |
7d9d8943 AM |
2179 | \f |
2180 | /* And now, the subset of the debugging information support code necessary | |
2181 | for emitting location expressions. */ | |
3f76745e | 2182 | |
b9203463 RH |
2183 | /* We need some way to distinguish DW_OP_addr with a direct symbol |
2184 | relocation from DW_OP_addr with a dtp-relative symbol relocation. */ | |
2185 | #define INTERNAL_DW_OP_tls_addr (0x100 + DW_OP_addr) | |
2186 | ||
2187 | ||
7d9d8943 AM |
2188 | typedef struct dw_val_struct *dw_val_ref; |
2189 | typedef struct die_struct *dw_die_ref; | |
2190 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
63e46568 | 2191 | typedef struct dw_loc_list_struct *dw_loc_list_ref; |
3f76745e JM |
2192 | |
2193 | /* Each DIE may have a series of attribute/value pairs. Values | |
2194 | can take on several forms. The forms that are used in this | |
2195 | implementation are listed below. */ | |
2196 | ||
2197 | typedef enum | |
2198 | { | |
2199 | dw_val_class_addr, | |
a20612aa | 2200 | dw_val_class_offset, |
3f76745e | 2201 | dw_val_class_loc, |
63e46568 | 2202 | dw_val_class_loc_list, |
2bee6045 | 2203 | dw_val_class_range_list, |
3f76745e JM |
2204 | dw_val_class_const, |
2205 | dw_val_class_unsigned_const, | |
2206 | dw_val_class_long_long, | |
2207 | dw_val_class_float, | |
2208 | dw_val_class_flag, | |
2209 | dw_val_class_die_ref, | |
2210 | dw_val_class_fde_ref, | |
2211 | dw_val_class_lbl_id, | |
8b790721 | 2212 | dw_val_class_lbl_offset, |
3f76745e | 2213 | dw_val_class_str |
a3f97cbb | 2214 | } |
3f76745e | 2215 | dw_val_class; |
a3f97cbb | 2216 | |
3f76745e | 2217 | /* Describe a double word constant value. */ |
21217bd0 | 2218 | /* ??? Every instance of long_long in the code really means CONST_DOUBLE. */ |
3f76745e JM |
2219 | |
2220 | typedef struct dw_long_long_struct | |
a3f97cbb | 2221 | { |
3f76745e JM |
2222 | unsigned long hi; |
2223 | unsigned long low; | |
2224 | } | |
2225 | dw_long_long_const; | |
2226 | ||
2227 | /* Describe a floating point constant value. */ | |
2228 | ||
2229 | typedef struct dw_fp_struct | |
2230 | { | |
2231 | long *array; | |
2232 | unsigned length; | |
2233 | } | |
2234 | dw_float_const; | |
2235 | ||
956d6950 | 2236 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2237 | represented internally. */ |
2238 | ||
2239 | typedef struct dw_val_struct | |
2240 | { | |
2241 | dw_val_class val_class; | |
2242 | union | |
a3f97cbb | 2243 | { |
1865dbb5 | 2244 | rtx val_addr; |
a20612aa | 2245 | long unsigned val_offset; |
63e46568 | 2246 | dw_loc_list_ref val_loc_list; |
3f76745e JM |
2247 | dw_loc_descr_ref val_loc; |
2248 | long int val_int; | |
2249 | long unsigned val_unsigned; | |
2250 | dw_long_long_const val_long_long; | |
2251 | dw_float_const val_float; | |
2ad9852d RK |
2252 | struct |
2253 | { | |
2254 | dw_die_ref die; | |
2255 | int external; | |
2256 | } val_die_ref; | |
3f76745e | 2257 | unsigned val_fde_index; |
9eb4015a | 2258 | struct indirect_string_node *val_str; |
3f76745e | 2259 | char *val_lbl_id; |
3f76745e | 2260 | unsigned char val_flag; |
a3f97cbb | 2261 | } |
3f76745e JM |
2262 | v; |
2263 | } | |
2264 | dw_val_node; | |
2265 | ||
2266 | /* Locations in memory are described using a sequence of stack machine | |
2267 | operations. */ | |
2268 | ||
2269 | typedef struct dw_loc_descr_struct | |
2270 | { | |
2271 | dw_loc_descr_ref dw_loc_next; | |
2272 | enum dwarf_location_atom dw_loc_opc; | |
2273 | dw_val_node dw_loc_oprnd1; | |
2274 | dw_val_node dw_loc_oprnd2; | |
d8041cc8 | 2275 | int dw_loc_addr; |
3f76745e JM |
2276 | } |
2277 | dw_loc_descr_node; | |
2278 | ||
63e46568 DB |
2279 | /* Location lists are ranges + location descriptions for that range, |
2280 | so you can track variables that are in different places over | |
30f7a378 | 2281 | their entire life. */ |
63e46568 DB |
2282 | typedef struct dw_loc_list_struct |
2283 | { | |
2284 | dw_loc_list_ref dw_loc_next; | |
2285 | const char *begin; /* Label for begin address of range */ | |
2286 | const char *end; /* Label for end address of range */ | |
2ad9852d RK |
2287 | char *ll_symbol; /* Label for beginning of location list. |
2288 | Only on head of list */ | |
63e46568 DB |
2289 | const char *section; /* Section this loclist is relative to */ |
2290 | dw_loc_descr_ref expr; | |
2291 | } dw_loc_list_node; | |
2292 | ||
7d9d8943 AM |
2293 | static const char *dwarf_stack_op_name PARAMS ((unsigned)); |
2294 | static dw_loc_descr_ref new_loc_descr PARAMS ((enum dwarf_location_atom, | |
2295 | unsigned long, | |
2296 | unsigned long)); | |
2297 | static void add_loc_descr PARAMS ((dw_loc_descr_ref *, | |
2298 | dw_loc_descr_ref)); | |
2299 | static unsigned long size_of_loc_descr PARAMS ((dw_loc_descr_ref)); | |
2300 | static unsigned long size_of_locs PARAMS ((dw_loc_descr_ref)); | |
2301 | static void output_loc_operands PARAMS ((dw_loc_descr_ref)); | |
2302 | static void output_loc_sequence PARAMS ((dw_loc_descr_ref)); | |
3f76745e | 2303 | |
7d9d8943 | 2304 | /* Convert a DWARF stack opcode into its string name. */ |
3f76745e | 2305 | |
7d9d8943 AM |
2306 | static const char * |
2307 | dwarf_stack_op_name (op) | |
b3694847 | 2308 | unsigned op; |
ef76d03b | 2309 | { |
7d9d8943 AM |
2310 | switch (op) |
2311 | { | |
2312 | case DW_OP_addr: | |
b9203463 | 2313 | case INTERNAL_DW_OP_tls_addr: |
7d9d8943 AM |
2314 | return "DW_OP_addr"; |
2315 | case DW_OP_deref: | |
2316 | return "DW_OP_deref"; | |
2317 | case DW_OP_const1u: | |
2318 | return "DW_OP_const1u"; | |
2319 | case DW_OP_const1s: | |
2320 | return "DW_OP_const1s"; | |
2321 | case DW_OP_const2u: | |
2322 | return "DW_OP_const2u"; | |
2323 | case DW_OP_const2s: | |
2324 | return "DW_OP_const2s"; | |
2325 | case DW_OP_const4u: | |
2326 | return "DW_OP_const4u"; | |
2327 | case DW_OP_const4s: | |
2328 | return "DW_OP_const4s"; | |
2329 | case DW_OP_const8u: | |
2330 | return "DW_OP_const8u"; | |
2331 | case DW_OP_const8s: | |
2332 | return "DW_OP_const8s"; | |
2333 | case DW_OP_constu: | |
2334 | return "DW_OP_constu"; | |
2335 | case DW_OP_consts: | |
2336 | return "DW_OP_consts"; | |
2337 | case DW_OP_dup: | |
2338 | return "DW_OP_dup"; | |
2339 | case DW_OP_drop: | |
2340 | return "DW_OP_drop"; | |
2341 | case DW_OP_over: | |
2342 | return "DW_OP_over"; | |
2343 | case DW_OP_pick: | |
2344 | return "DW_OP_pick"; | |
2345 | case DW_OP_swap: | |
2346 | return "DW_OP_swap"; | |
2347 | case DW_OP_rot: | |
2348 | return "DW_OP_rot"; | |
2349 | case DW_OP_xderef: | |
2350 | return "DW_OP_xderef"; | |
2351 | case DW_OP_abs: | |
2352 | return "DW_OP_abs"; | |
2353 | case DW_OP_and: | |
2354 | return "DW_OP_and"; | |
2355 | case DW_OP_div: | |
2356 | return "DW_OP_div"; | |
2357 | case DW_OP_minus: | |
2358 | return "DW_OP_minus"; | |
2359 | case DW_OP_mod: | |
2360 | return "DW_OP_mod"; | |
2361 | case DW_OP_mul: | |
2362 | return "DW_OP_mul"; | |
2363 | case DW_OP_neg: | |
2364 | return "DW_OP_neg"; | |
2365 | case DW_OP_not: | |
2366 | return "DW_OP_not"; | |
2367 | case DW_OP_or: | |
2368 | return "DW_OP_or"; | |
2369 | case DW_OP_plus: | |
2370 | return "DW_OP_plus"; | |
2371 | case DW_OP_plus_uconst: | |
2372 | return "DW_OP_plus_uconst"; | |
2373 | case DW_OP_shl: | |
2374 | return "DW_OP_shl"; | |
2375 | case DW_OP_shr: | |
2376 | return "DW_OP_shr"; | |
2377 | case DW_OP_shra: | |
2378 | return "DW_OP_shra"; | |
2379 | case DW_OP_xor: | |
2380 | return "DW_OP_xor"; | |
2381 | case DW_OP_bra: | |
2382 | return "DW_OP_bra"; | |
2383 | case DW_OP_eq: | |
2384 | return "DW_OP_eq"; | |
2385 | case DW_OP_ge: | |
2386 | return "DW_OP_ge"; | |
2387 | case DW_OP_gt: | |
2388 | return "DW_OP_gt"; | |
2389 | case DW_OP_le: | |
2390 | return "DW_OP_le"; | |
2391 | case DW_OP_lt: | |
2392 | return "DW_OP_lt"; | |
2393 | case DW_OP_ne: | |
2394 | return "DW_OP_ne"; | |
2395 | case DW_OP_skip: | |
2396 | return "DW_OP_skip"; | |
2397 | case DW_OP_lit0: | |
2398 | return "DW_OP_lit0"; | |
2399 | case DW_OP_lit1: | |
2400 | return "DW_OP_lit1"; | |
2401 | case DW_OP_lit2: | |
2402 | return "DW_OP_lit2"; | |
2403 | case DW_OP_lit3: | |
2404 | return "DW_OP_lit3"; | |
2405 | case DW_OP_lit4: | |
2406 | return "DW_OP_lit4"; | |
2407 | case DW_OP_lit5: | |
2408 | return "DW_OP_lit5"; | |
2409 | case DW_OP_lit6: | |
2410 | return "DW_OP_lit6"; | |
2411 | case DW_OP_lit7: | |
2412 | return "DW_OP_lit7"; | |
2413 | case DW_OP_lit8: | |
2414 | return "DW_OP_lit8"; | |
2415 | case DW_OP_lit9: | |
2416 | return "DW_OP_lit9"; | |
2417 | case DW_OP_lit10: | |
2418 | return "DW_OP_lit10"; | |
2419 | case DW_OP_lit11: | |
2420 | return "DW_OP_lit11"; | |
2421 | case DW_OP_lit12: | |
2422 | return "DW_OP_lit12"; | |
2423 | case DW_OP_lit13: | |
2424 | return "DW_OP_lit13"; | |
2425 | case DW_OP_lit14: | |
2426 | return "DW_OP_lit14"; | |
2427 | case DW_OP_lit15: | |
2428 | return "DW_OP_lit15"; | |
2429 | case DW_OP_lit16: | |
2430 | return "DW_OP_lit16"; | |
2431 | case DW_OP_lit17: | |
2432 | return "DW_OP_lit17"; | |
2433 | case DW_OP_lit18: | |
2434 | return "DW_OP_lit18"; | |
2435 | case DW_OP_lit19: | |
2436 | return "DW_OP_lit19"; | |
2437 | case DW_OP_lit20: | |
2438 | return "DW_OP_lit20"; | |
2439 | case DW_OP_lit21: | |
2440 | return "DW_OP_lit21"; | |
2441 | case DW_OP_lit22: | |
2442 | return "DW_OP_lit22"; | |
2443 | case DW_OP_lit23: | |
2444 | return "DW_OP_lit23"; | |
2445 | case DW_OP_lit24: | |
2446 | return "DW_OP_lit24"; | |
2447 | case DW_OP_lit25: | |
2448 | return "DW_OP_lit25"; | |
2449 | case DW_OP_lit26: | |
2450 | return "DW_OP_lit26"; | |
2451 | case DW_OP_lit27: | |
2452 | return "DW_OP_lit27"; | |
2453 | case DW_OP_lit28: | |
2454 | return "DW_OP_lit28"; | |
2455 | case DW_OP_lit29: | |
2456 | return "DW_OP_lit29"; | |
2457 | case DW_OP_lit30: | |
2458 | return "DW_OP_lit30"; | |
2459 | case DW_OP_lit31: | |
2460 | return "DW_OP_lit31"; | |
2461 | case DW_OP_reg0: | |
2462 | return "DW_OP_reg0"; | |
2463 | case DW_OP_reg1: | |
2464 | return "DW_OP_reg1"; | |
2465 | case DW_OP_reg2: | |
2466 | return "DW_OP_reg2"; | |
2467 | case DW_OP_reg3: | |
2468 | return "DW_OP_reg3"; | |
2469 | case DW_OP_reg4: | |
2470 | return "DW_OP_reg4"; | |
2471 | case DW_OP_reg5: | |
2472 | return "DW_OP_reg5"; | |
2473 | case DW_OP_reg6: | |
2474 | return "DW_OP_reg6"; | |
2475 | case DW_OP_reg7: | |
2476 | return "DW_OP_reg7"; | |
2477 | case DW_OP_reg8: | |
2478 | return "DW_OP_reg8"; | |
2479 | case DW_OP_reg9: | |
2480 | return "DW_OP_reg9"; | |
2481 | case DW_OP_reg10: | |
2482 | return "DW_OP_reg10"; | |
2483 | case DW_OP_reg11: | |
2484 | return "DW_OP_reg11"; | |
2485 | case DW_OP_reg12: | |
2486 | return "DW_OP_reg12"; | |
2487 | case DW_OP_reg13: | |
2488 | return "DW_OP_reg13"; | |
2489 | case DW_OP_reg14: | |
2490 | return "DW_OP_reg14"; | |
2491 | case DW_OP_reg15: | |
2492 | return "DW_OP_reg15"; | |
2493 | case DW_OP_reg16: | |
2494 | return "DW_OP_reg16"; | |
2495 | case DW_OP_reg17: | |
2496 | return "DW_OP_reg17"; | |
2497 | case DW_OP_reg18: | |
2498 | return "DW_OP_reg18"; | |
2499 | case DW_OP_reg19: | |
2500 | return "DW_OP_reg19"; | |
2501 | case DW_OP_reg20: | |
2502 | return "DW_OP_reg20"; | |
2503 | case DW_OP_reg21: | |
2504 | return "DW_OP_reg21"; | |
2505 | case DW_OP_reg22: | |
2506 | return "DW_OP_reg22"; | |
2507 | case DW_OP_reg23: | |
2508 | return "DW_OP_reg23"; | |
2509 | case DW_OP_reg24: | |
2510 | return "DW_OP_reg24"; | |
2511 | case DW_OP_reg25: | |
2512 | return "DW_OP_reg25"; | |
2513 | case DW_OP_reg26: | |
2514 | return "DW_OP_reg26"; | |
2515 | case DW_OP_reg27: | |
2516 | return "DW_OP_reg27"; | |
2517 | case DW_OP_reg28: | |
2518 | return "DW_OP_reg28"; | |
2519 | case DW_OP_reg29: | |
2520 | return "DW_OP_reg29"; | |
2521 | case DW_OP_reg30: | |
2522 | return "DW_OP_reg30"; | |
2523 | case DW_OP_reg31: | |
2524 | return "DW_OP_reg31"; | |
2525 | case DW_OP_breg0: | |
2526 | return "DW_OP_breg0"; | |
2527 | case DW_OP_breg1: | |
2528 | return "DW_OP_breg1"; | |
2529 | case DW_OP_breg2: | |
2530 | return "DW_OP_breg2"; | |
2531 | case DW_OP_breg3: | |
2532 | return "DW_OP_breg3"; | |
2533 | case DW_OP_breg4: | |
2534 | return "DW_OP_breg4"; | |
2535 | case DW_OP_breg5: | |
2536 | return "DW_OP_breg5"; | |
2537 | case DW_OP_breg6: | |
2538 | return "DW_OP_breg6"; | |
2539 | case DW_OP_breg7: | |
2540 | return "DW_OP_breg7"; | |
2541 | case DW_OP_breg8: | |
2542 | return "DW_OP_breg8"; | |
2543 | case DW_OP_breg9: | |
2544 | return "DW_OP_breg9"; | |
2545 | case DW_OP_breg10: | |
2546 | return "DW_OP_breg10"; | |
2547 | case DW_OP_breg11: | |
2548 | return "DW_OP_breg11"; | |
2549 | case DW_OP_breg12: | |
2550 | return "DW_OP_breg12"; | |
2551 | case DW_OP_breg13: | |
2552 | return "DW_OP_breg13"; | |
2553 | case DW_OP_breg14: | |
2554 | return "DW_OP_breg14"; | |
2555 | case DW_OP_breg15: | |
2556 | return "DW_OP_breg15"; | |
2557 | case DW_OP_breg16: | |
2558 | return "DW_OP_breg16"; | |
2559 | case DW_OP_breg17: | |
2560 | return "DW_OP_breg17"; | |
2561 | case DW_OP_breg18: | |
2562 | return "DW_OP_breg18"; | |
2563 | case DW_OP_breg19: | |
2564 | return "DW_OP_breg19"; | |
2565 | case DW_OP_breg20: | |
2566 | return "DW_OP_breg20"; | |
2567 | case DW_OP_breg21: | |
2568 | return "DW_OP_breg21"; | |
2569 | case DW_OP_breg22: | |
2570 | return "DW_OP_breg22"; | |
2571 | case DW_OP_breg23: | |
2572 | return "DW_OP_breg23"; | |
2573 | case DW_OP_breg24: | |
2574 | return "DW_OP_breg24"; | |
2575 | case DW_OP_breg25: | |
2576 | return "DW_OP_breg25"; | |
2577 | case DW_OP_breg26: | |
2578 | return "DW_OP_breg26"; | |
2579 | case DW_OP_breg27: | |
2580 | return "DW_OP_breg27"; | |
2581 | case DW_OP_breg28: | |
2582 | return "DW_OP_breg28"; | |
2583 | case DW_OP_breg29: | |
2584 | return "DW_OP_breg29"; | |
2585 | case DW_OP_breg30: | |
2586 | return "DW_OP_breg30"; | |
2587 | case DW_OP_breg31: | |
2588 | return "DW_OP_breg31"; | |
2589 | case DW_OP_regx: | |
2590 | return "DW_OP_regx"; | |
2591 | case DW_OP_fbreg: | |
2592 | return "DW_OP_fbreg"; | |
2593 | case DW_OP_bregx: | |
2594 | return "DW_OP_bregx"; | |
2595 | case DW_OP_piece: | |
2596 | return "DW_OP_piece"; | |
2597 | case DW_OP_deref_size: | |
2598 | return "DW_OP_deref_size"; | |
2599 | case DW_OP_xderef_size: | |
2600 | return "DW_OP_xderef_size"; | |
2601 | case DW_OP_nop: | |
2602 | return "DW_OP_nop"; | |
b9203463 RH |
2603 | case DW_OP_push_object_address: |
2604 | return "DW_OP_push_object_address"; | |
2605 | case DW_OP_call2: | |
2606 | return "DW_OP_call2"; | |
2607 | case DW_OP_call4: | |
2608 | return "DW_OP_call4"; | |
2609 | case DW_OP_call_ref: | |
2610 | return "DW_OP_call_ref"; | |
2611 | case DW_OP_GNU_push_tls_address: | |
2612 | return "DW_OP_GNU_push_tls_address"; | |
3f76745e | 2613 | default: |
7d9d8943 | 2614 | return "OP_<unknown>"; |
3f76745e | 2615 | } |
bdb669cb | 2616 | } |
a3f97cbb | 2617 | |
7d9d8943 AM |
2618 | /* Return a pointer to a newly allocated location description. Location |
2619 | descriptions are simple expression terms that can be strung | |
2620 | together to form more complicated location (address) descriptions. */ | |
2621 | ||
2622 | static inline dw_loc_descr_ref | |
2623 | new_loc_descr (op, oprnd1, oprnd2) | |
b3694847 SS |
2624 | enum dwarf_location_atom op; |
2625 | unsigned long oprnd1; | |
2626 | unsigned long oprnd2; | |
4b674448 | 2627 | { |
5de0e8d4 JM |
2628 | /* Use xcalloc here so we clear out all of the long_long constant in |
2629 | the union. */ | |
b3694847 | 2630 | dw_loc_descr_ref descr |
5de0e8d4 | 2631 | = (dw_loc_descr_ref) xcalloc (1, sizeof (dw_loc_descr_node)); |
71dfc51f | 2632 | |
7d9d8943 AM |
2633 | descr->dw_loc_opc = op; |
2634 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
2635 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
2636 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
2637 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 2638 | |
7d9d8943 AM |
2639 | return descr; |
2640 | } | |
2641 | ||
63e46568 | 2642 | |
7d9d8943 AM |
2643 | /* Add a location description term to a location description expression. */ |
2644 | ||
2645 | static inline void | |
2646 | add_loc_descr (list_head, descr) | |
b3694847 SS |
2647 | dw_loc_descr_ref *list_head; |
2648 | dw_loc_descr_ref descr; | |
7d9d8943 | 2649 | { |
b3694847 | 2650 | dw_loc_descr_ref *d; |
7d9d8943 AM |
2651 | |
2652 | /* Find the end of the chain. */ | |
2653 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
2654 | ; | |
2655 | ||
2656 | *d = descr; | |
2657 | } | |
2658 | ||
2659 | /* Return the size of a location descriptor. */ | |
2660 | ||
2661 | static unsigned long | |
2662 | size_of_loc_descr (loc) | |
b3694847 | 2663 | dw_loc_descr_ref loc; |
7d9d8943 | 2664 | { |
b3694847 | 2665 | unsigned long size = 1; |
7d9d8943 AM |
2666 | |
2667 | switch (loc->dw_loc_opc) | |
2668 | { | |
2669 | case DW_OP_addr: | |
b9203463 | 2670 | case INTERNAL_DW_OP_tls_addr: |
7d9d8943 AM |
2671 | size += DWARF2_ADDR_SIZE; |
2672 | break; | |
2673 | case DW_OP_const1u: | |
2674 | case DW_OP_const1s: | |
2675 | size += 1; | |
2676 | break; | |
2677 | case DW_OP_const2u: | |
2678 | case DW_OP_const2s: | |
2679 | size += 2; | |
2680 | break; | |
2681 | case DW_OP_const4u: | |
2682 | case DW_OP_const4s: | |
2683 | size += 4; | |
2684 | break; | |
2685 | case DW_OP_const8u: | |
2686 | case DW_OP_const8s: | |
2687 | size += 8; | |
2688 | break; | |
2689 | case DW_OP_constu: | |
2690 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2691 | break; | |
2692 | case DW_OP_consts: | |
2693 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2694 | break; | |
2695 | case DW_OP_pick: | |
2696 | size += 1; | |
2697 | break; | |
2698 | case DW_OP_plus_uconst: | |
2699 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2700 | break; | |
2701 | case DW_OP_skip: | |
2702 | case DW_OP_bra: | |
2703 | size += 2; | |
2704 | break; | |
2705 | case DW_OP_breg0: | |
2706 | case DW_OP_breg1: | |
2707 | case DW_OP_breg2: | |
2708 | case DW_OP_breg3: | |
2709 | case DW_OP_breg4: | |
2710 | case DW_OP_breg5: | |
2711 | case DW_OP_breg6: | |
2712 | case DW_OP_breg7: | |
2713 | case DW_OP_breg8: | |
2714 | case DW_OP_breg9: | |
2715 | case DW_OP_breg10: | |
2716 | case DW_OP_breg11: | |
2717 | case DW_OP_breg12: | |
2718 | case DW_OP_breg13: | |
2719 | case DW_OP_breg14: | |
2720 | case DW_OP_breg15: | |
2721 | case DW_OP_breg16: | |
2722 | case DW_OP_breg17: | |
2723 | case DW_OP_breg18: | |
2724 | case DW_OP_breg19: | |
2725 | case DW_OP_breg20: | |
2726 | case DW_OP_breg21: | |
2727 | case DW_OP_breg22: | |
2728 | case DW_OP_breg23: | |
2729 | case DW_OP_breg24: | |
2730 | case DW_OP_breg25: | |
2731 | case DW_OP_breg26: | |
2732 | case DW_OP_breg27: | |
2733 | case DW_OP_breg28: | |
2734 | case DW_OP_breg29: | |
2735 | case DW_OP_breg30: | |
2736 | case DW_OP_breg31: | |
2737 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2738 | break; | |
2739 | case DW_OP_regx: | |
2740 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2741 | break; | |
2742 | case DW_OP_fbreg: | |
2743 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2744 | break; | |
2745 | case DW_OP_bregx: | |
2746 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2747 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
2748 | break; | |
2749 | case DW_OP_piece: | |
2750 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2751 | break; | |
2752 | case DW_OP_deref_size: | |
2753 | case DW_OP_xderef_size: | |
2754 | size += 1; | |
2755 | break; | |
b9203463 RH |
2756 | case DW_OP_call2: |
2757 | size += 2; | |
2758 | break; | |
2759 | case DW_OP_call4: | |
2760 | size += 4; | |
2761 | break; | |
2762 | case DW_OP_call_ref: | |
2763 | size += DWARF2_ADDR_SIZE; | |
2764 | break; | |
3f76745e | 2765 | default: |
7d9d8943 | 2766 | break; |
4b674448 | 2767 | } |
7d9d8943 AM |
2768 | |
2769 | return size; | |
4b674448 JM |
2770 | } |
2771 | ||
7d9d8943 | 2772 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 2773 | |
7d9d8943 AM |
2774 | static unsigned long |
2775 | size_of_locs (loc) | |
b3694847 | 2776 | dw_loc_descr_ref loc; |
4b674448 | 2777 | { |
2ad9852d | 2778 | unsigned long size; |
7d9d8943 | 2779 | |
2ad9852d | 2780 | for (size = 0; loc != NULL; loc = loc->dw_loc_next) |
d8041cc8 RH |
2781 | { |
2782 | loc->dw_loc_addr = size; | |
2783 | size += size_of_loc_descr (loc); | |
2784 | } | |
7d9d8943 AM |
2785 | |
2786 | return size; | |
4b674448 JM |
2787 | } |
2788 | ||
7d9d8943 | 2789 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 2790 | |
7d9d8943 AM |
2791 | static void |
2792 | output_loc_operands (loc) | |
b3694847 | 2793 | dw_loc_descr_ref loc; |
a3f97cbb | 2794 | { |
b3694847 SS |
2795 | dw_val_ref val1 = &loc->dw_loc_oprnd1; |
2796 | dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
7d9d8943 AM |
2797 | |
2798 | switch (loc->dw_loc_opc) | |
a3f97cbb | 2799 | { |
0517872a | 2800 | #ifdef DWARF2_DEBUGGING_INFO |
3f76745e | 2801 | case DW_OP_addr: |
2e4b9b8c | 2802 | dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, val1->v.val_addr, NULL); |
7d9d8943 | 2803 | break; |
3f76745e | 2804 | case DW_OP_const2u: |
3f76745e | 2805 | case DW_OP_const2s: |
2e4b9b8c | 2806 | dw2_asm_output_data (2, val1->v.val_int, NULL); |
7d9d8943 | 2807 | break; |
3f76745e | 2808 | case DW_OP_const4u: |
3f76745e | 2809 | case DW_OP_const4s: |
2e4b9b8c | 2810 | dw2_asm_output_data (4, val1->v.val_int, NULL); |
7d9d8943 | 2811 | break; |
3f76745e | 2812 | case DW_OP_const8u: |
3f76745e | 2813 | case DW_OP_const8s: |
2e4b9b8c RH |
2814 | if (HOST_BITS_PER_LONG < 64) |
2815 | abort (); | |
2816 | dw2_asm_output_data (8, val1->v.val_int, NULL); | |
7d9d8943 | 2817 | break; |
0517872a JM |
2818 | case DW_OP_skip: |
2819 | case DW_OP_bra: | |
d8041cc8 RH |
2820 | { |
2821 | int offset; | |
2822 | ||
2823 | if (val1->val_class == dw_val_class_loc) | |
2824 | offset = val1->v.val_loc->dw_loc_addr - (loc->dw_loc_addr + 3); | |
2825 | else | |
2826 | abort (); | |
2827 | ||
2e4b9b8c | 2828 | dw2_asm_output_data (2, offset, NULL); |
d8041cc8 | 2829 | } |
0517872a | 2830 | break; |
3139472f JM |
2831 | #else |
2832 | case DW_OP_addr: | |
2833 | case DW_OP_const2u: | |
2834 | case DW_OP_const2s: | |
2835 | case DW_OP_const4u: | |
2836 | case DW_OP_const4s: | |
2837 | case DW_OP_const8u: | |
2838 | case DW_OP_const8s: | |
2839 | case DW_OP_skip: | |
2840 | case DW_OP_bra: | |
2841 | /* We currently don't make any attempt to make sure these are | |
2842 | aligned properly like we do for the main unwind info, so | |
2843 | don't support emitting things larger than a byte if we're | |
2844 | only doing unwinding. */ | |
2845 | abort (); | |
0517872a JM |
2846 | #endif |
2847 | case DW_OP_const1u: | |
2848 | case DW_OP_const1s: | |
2e4b9b8c | 2849 | dw2_asm_output_data (1, val1->v.val_int, NULL); |
0517872a | 2850 | break; |
3f76745e | 2851 | case DW_OP_constu: |
2e4b9b8c | 2852 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 2853 | break; |
3f76745e | 2854 | case DW_OP_consts: |
2e4b9b8c | 2855 | dw2_asm_output_data_sleb128 (val1->v.val_int, NULL); |
7d9d8943 AM |
2856 | break; |
2857 | case DW_OP_pick: | |
2e4b9b8c | 2858 | dw2_asm_output_data (1, val1->v.val_int, NULL); |
7d9d8943 AM |
2859 | break; |
2860 | case DW_OP_plus_uconst: | |
2e4b9b8c | 2861 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 2862 | break; |
3f76745e | 2863 | case DW_OP_breg0: |
3f76745e | 2864 | case DW_OP_breg1: |
3f76745e | 2865 | case DW_OP_breg2: |
3f76745e | 2866 | case DW_OP_breg3: |
3f76745e | 2867 | case DW_OP_breg4: |
3f76745e | 2868 | case DW_OP_breg5: |
3f76745e | 2869 | case DW_OP_breg6: |
3f76745e | 2870 | case DW_OP_breg7: |
3f76745e | 2871 | case DW_OP_breg8: |
3f76745e | 2872 | case DW_OP_breg9: |
3f76745e | 2873 | case DW_OP_breg10: |
3f76745e | 2874 | case DW_OP_breg11: |
3f76745e | 2875 | case DW_OP_breg12: |
3f76745e | 2876 | case DW_OP_breg13: |
3f76745e | 2877 | case DW_OP_breg14: |
3f76745e | 2878 | case DW_OP_breg15: |
3f76745e | 2879 | case DW_OP_breg16: |
3f76745e | 2880 | case DW_OP_breg17: |
3f76745e | 2881 | case DW_OP_breg18: |
3f76745e | 2882 | case DW_OP_breg19: |
3f76745e | 2883 | case DW_OP_breg20: |
3f76745e | 2884 | case DW_OP_breg21: |
3f76745e | 2885 | case DW_OP_breg22: |
3f76745e | 2886 | case DW_OP_breg23: |
3f76745e | 2887 | case DW_OP_breg24: |
3f76745e | 2888 | case DW_OP_breg25: |
3f76745e | 2889 | case DW_OP_breg26: |
3f76745e | 2890 | case DW_OP_breg27: |
3f76745e | 2891 | case DW_OP_breg28: |
3f76745e | 2892 | case DW_OP_breg29: |
3f76745e | 2893 | case DW_OP_breg30: |
3f76745e | 2894 | case DW_OP_breg31: |
2e4b9b8c | 2895 | dw2_asm_output_data_sleb128 (val1->v.val_int, NULL); |
7d9d8943 | 2896 | break; |
3f76745e | 2897 | case DW_OP_regx: |
2e4b9b8c | 2898 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 2899 | break; |
3f76745e | 2900 | case DW_OP_fbreg: |
2e4b9b8c | 2901 | dw2_asm_output_data_sleb128 (val1->v.val_int, NULL); |
7d9d8943 | 2902 | break; |
3f76745e | 2903 | case DW_OP_bregx: |
2e4b9b8c RH |
2904 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
2905 | dw2_asm_output_data_sleb128 (val2->v.val_int, NULL); | |
7d9d8943 | 2906 | break; |
3f76745e | 2907 | case DW_OP_piece: |
2e4b9b8c | 2908 | dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL); |
7d9d8943 | 2909 | break; |
3f76745e | 2910 | case DW_OP_deref_size: |
3f76745e | 2911 | case DW_OP_xderef_size: |
2e4b9b8c | 2912 | dw2_asm_output_data (1, val1->v.val_int, NULL); |
7d9d8943 | 2913 | break; |
b9203463 RH |
2914 | |
2915 | case INTERNAL_DW_OP_tls_addr: | |
2916 | #ifdef ASM_OUTPUT_DWARF_DTPREL | |
2917 | ASM_OUTPUT_DWARF_DTPREL (asm_out_file, DWARF2_ADDR_SIZE, | |
2918 | val1->v.val_addr); | |
2919 | fputc ('\n', asm_out_file); | |
2920 | #else | |
2921 | abort (); | |
2922 | #endif | |
2923 | break; | |
2924 | ||
7d9d8943 | 2925 | default: |
3139472f JM |
2926 | /* Other codes have no operands. */ |
2927 | break; | |
7d9d8943 AM |
2928 | } |
2929 | } | |
2930 | ||
2931 | /* Output a sequence of location operations. */ | |
2932 | ||
2933 | static void | |
2934 | output_loc_sequence (loc) | |
2935 | dw_loc_descr_ref loc; | |
2936 | { | |
2937 | for (; loc != NULL; loc = loc->dw_loc_next) | |
2938 | { | |
2939 | /* Output the opcode. */ | |
2e4b9b8c RH |
2940 | dw2_asm_output_data (1, loc->dw_loc_opc, |
2941 | "%s", dwarf_stack_op_name (loc->dw_loc_opc)); | |
7d9d8943 AM |
2942 | |
2943 | /* Output the operand(s) (if any). */ | |
2944 | output_loc_operands (loc); | |
2945 | } | |
2946 | } | |
2947 | ||
2948 | /* This routine will generate the correct assembly data for a location | |
2949 | description based on a cfi entry with a complex address. */ | |
2950 | ||
2951 | static void | |
2952 | output_cfa_loc (cfi) | |
2953 | dw_cfi_ref cfi; | |
2954 | { | |
2955 | dw_loc_descr_ref loc; | |
2956 | unsigned long size; | |
2957 | ||
2958 | /* Output the size of the block. */ | |
2959 | loc = cfi->dw_cfi_oprnd1.dw_cfi_loc; | |
2960 | size = size_of_locs (loc); | |
2e4b9b8c | 2961 | dw2_asm_output_data_uleb128 (size, NULL); |
7d9d8943 AM |
2962 | |
2963 | /* Now output the operations themselves. */ | |
2964 | output_loc_sequence (loc); | |
2965 | } | |
2966 | ||
dd49a9ec | 2967 | /* This function builds a dwarf location descriptor sequence from |
556273e0 | 2968 | a dw_cfa_location. */ |
7d9d8943 AM |
2969 | |
2970 | static struct dw_loc_descr_struct * | |
2971 | build_cfa_loc (cfa) | |
2972 | dw_cfa_location *cfa; | |
2973 | { | |
2974 | struct dw_loc_descr_struct *head, *tmp; | |
2975 | ||
2976 | if (cfa->indirect == 0) | |
2977 | abort (); | |
2978 | ||
2979 | if (cfa->base_offset) | |
f299afab HPN |
2980 | { |
2981 | if (cfa->reg <= 31) | |
2982 | head = new_loc_descr (DW_OP_breg0 + cfa->reg, cfa->base_offset, 0); | |
2983 | else | |
2984 | head = new_loc_descr (DW_OP_bregx, cfa->reg, cfa->base_offset); | |
2985 | } | |
2986 | else if (cfa->reg <= 31) | |
7d9d8943 | 2987 | head = new_loc_descr (DW_OP_reg0 + cfa->reg, 0, 0); |
f299afab HPN |
2988 | else |
2989 | head = new_loc_descr (DW_OP_regx, cfa->reg, 0); | |
2ad9852d | 2990 | |
7d9d8943 AM |
2991 | head->dw_loc_oprnd1.val_class = dw_val_class_const; |
2992 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
2993 | add_loc_descr (&head, tmp); | |
2994 | if (cfa->offset != 0) | |
2995 | { | |
2996 | tmp = new_loc_descr (DW_OP_plus_uconst, cfa->offset, 0); | |
2997 | add_loc_descr (&head, tmp); | |
2998 | } | |
2ad9852d | 2999 | |
7d9d8943 AM |
3000 | return head; |
3001 | } | |
3002 | ||
2ad9852d RK |
3003 | /* This function fills in aa dw_cfa_location structure from a dwarf location |
3004 | descriptor sequence. */ | |
7d9d8943 AM |
3005 | |
3006 | static void | |
3007 | get_cfa_from_loc_descr (cfa, loc) | |
3008 | dw_cfa_location *cfa; | |
556273e0 | 3009 | struct dw_loc_descr_struct *loc; |
7d9d8943 | 3010 | { |
556273e0 | 3011 | struct dw_loc_descr_struct *ptr; |
7d9d8943 AM |
3012 | cfa->offset = 0; |
3013 | cfa->base_offset = 0; | |
3014 | cfa->indirect = 0; | |
3015 | cfa->reg = -1; | |
3016 | ||
3017 | for (ptr = loc; ptr != NULL; ptr = ptr->dw_loc_next) | |
3018 | { | |
3019 | enum dwarf_location_atom op = ptr->dw_loc_opc; | |
2ad9852d | 3020 | |
7d9d8943 | 3021 | switch (op) |
556273e0 | 3022 | { |
7d9d8943 AM |
3023 | case DW_OP_reg0: |
3024 | case DW_OP_reg1: | |
3025 | case DW_OP_reg2: | |
3026 | case DW_OP_reg3: | |
3027 | case DW_OP_reg4: | |
3028 | case DW_OP_reg5: | |
3029 | case DW_OP_reg6: | |
3030 | case DW_OP_reg7: | |
3031 | case DW_OP_reg8: | |
3032 | case DW_OP_reg9: | |
3033 | case DW_OP_reg10: | |
3034 | case DW_OP_reg11: | |
3035 | case DW_OP_reg12: | |
3036 | case DW_OP_reg13: | |
3037 | case DW_OP_reg14: | |
3038 | case DW_OP_reg15: | |
3039 | case DW_OP_reg16: | |
3040 | case DW_OP_reg17: | |
3041 | case DW_OP_reg18: | |
3042 | case DW_OP_reg19: | |
3043 | case DW_OP_reg20: | |
3044 | case DW_OP_reg21: | |
3045 | case DW_OP_reg22: | |
3046 | case DW_OP_reg23: | |
3047 | case DW_OP_reg24: | |
3048 | case DW_OP_reg25: | |
3049 | case DW_OP_reg26: | |
3050 | case DW_OP_reg27: | |
3051 | case DW_OP_reg28: | |
3052 | case DW_OP_reg29: | |
3053 | case DW_OP_reg30: | |
3054 | case DW_OP_reg31: | |
3055 | cfa->reg = op - DW_OP_reg0; | |
3056 | break; | |
3057 | case DW_OP_regx: | |
3058 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
3059 | break; | |
3060 | case DW_OP_breg0: | |
3061 | case DW_OP_breg1: | |
3062 | case DW_OP_breg2: | |
3063 | case DW_OP_breg3: | |
3064 | case DW_OP_breg4: | |
3065 | case DW_OP_breg5: | |
3066 | case DW_OP_breg6: | |
3067 | case DW_OP_breg7: | |
3068 | case DW_OP_breg8: | |
3069 | case DW_OP_breg9: | |
3070 | case DW_OP_breg10: | |
3071 | case DW_OP_breg11: | |
3072 | case DW_OP_breg12: | |
3073 | case DW_OP_breg13: | |
3074 | case DW_OP_breg14: | |
3075 | case DW_OP_breg15: | |
3076 | case DW_OP_breg16: | |
3077 | case DW_OP_breg17: | |
3078 | case DW_OP_breg18: | |
3079 | case DW_OP_breg19: | |
3080 | case DW_OP_breg20: | |
3081 | case DW_OP_breg21: | |
3082 | case DW_OP_breg22: | |
3083 | case DW_OP_breg23: | |
3084 | case DW_OP_breg24: | |
3085 | case DW_OP_breg25: | |
3086 | case DW_OP_breg26: | |
3087 | case DW_OP_breg27: | |
3088 | case DW_OP_breg28: | |
3089 | case DW_OP_breg29: | |
3090 | case DW_OP_breg30: | |
3091 | case DW_OP_breg31: | |
3092 | cfa->reg = op - DW_OP_breg0; | |
3093 | cfa->base_offset = ptr->dw_loc_oprnd1.v.val_int; | |
3094 | break; | |
3095 | case DW_OP_bregx: | |
3096 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
3097 | cfa->base_offset = ptr->dw_loc_oprnd2.v.val_int; | |
3098 | break; | |
3099 | case DW_OP_deref: | |
3100 | cfa->indirect = 1; | |
3101 | break; | |
3102 | case DW_OP_plus_uconst: | |
556273e0 | 3103 | cfa->offset = ptr->dw_loc_oprnd1.v.val_unsigned; |
7d9d8943 AM |
3104 | break; |
3105 | default: | |
a1f300c0 | 3106 | internal_error ("DW_LOC_OP %s not implemented\n", |
400500c4 | 3107 | dwarf_stack_op_name (ptr->dw_loc_opc)); |
7d9d8943 AM |
3108 | } |
3109 | } | |
3110 | } | |
3111 | #endif /* .debug_frame support */ | |
3112 | \f | |
3113 | /* And now, the support for symbolic debugging information. */ | |
3114 | #ifdef DWARF2_DEBUGGING_INFO | |
3115 | ||
117f9d28 GS |
3116 | /* .debug_str support. */ |
3117 | static hashnode indirect_string_alloc PARAMS ((hash_table *)); | |
3118 | static int output_indirect_string PARAMS ((struct cpp_reader *, | |
3119 | hashnode, const PTR)); | |
3120 | ||
3121 | ||
e2a12aca NB |
3122 | static void dwarf2out_init PARAMS ((const char *)); |
3123 | static void dwarf2out_finish PARAMS ((const char *)); | |
7f905405 NB |
3124 | static void dwarf2out_define PARAMS ((unsigned int, const char *)); |
3125 | static void dwarf2out_undef PARAMS ((unsigned int, const char *)); | |
3126 | static void dwarf2out_start_source_file PARAMS ((unsigned, const char *)); | |
3127 | static void dwarf2out_end_source_file PARAMS ((unsigned)); | |
e2a12aca NB |
3128 | static void dwarf2out_begin_block PARAMS ((unsigned, unsigned)); |
3129 | static void dwarf2out_end_block PARAMS ((unsigned, unsigned)); | |
e1772ac0 | 3130 | static bool dwarf2out_ignore_block PARAMS ((tree)); |
2b85879e | 3131 | static void dwarf2out_global_decl PARAMS ((tree)); |
e1772ac0 | 3132 | static void dwarf2out_abstract_function PARAMS ((tree)); |
7f905405 NB |
3133 | |
3134 | /* The debug hooks structure. */ | |
3135 | ||
54b6670a | 3136 | const struct gcc_debug_hooks dwarf2_debug_hooks = |
7f905405 NB |
3137 | { |
3138 | dwarf2out_init, | |
3139 | dwarf2out_finish, | |
3140 | dwarf2out_define, | |
3141 | dwarf2out_undef, | |
3142 | dwarf2out_start_source_file, | |
a5a42b92 NB |
3143 | dwarf2out_end_source_file, |
3144 | dwarf2out_begin_block, | |
e2a12aca | 3145 | dwarf2out_end_block, |
e1772ac0 | 3146 | dwarf2out_ignore_block, |
e2a12aca | 3147 | dwarf2out_source_line, |
653e276c | 3148 | dwarf2out_begin_prologue, |
702ada3d | 3149 | debug_nothing_int_charstar, /* end_prologue */ |
e2a12aca | 3150 | dwarf2out_end_epilogue, |
653e276c | 3151 | debug_nothing_tree, /* begin_function */ |
2b85879e NB |
3152 | debug_nothing_int, /* end_function */ |
3153 | dwarf2out_decl, /* function_decl */ | |
3154 | dwarf2out_global_decl, | |
e1772ac0 NB |
3155 | debug_nothing_tree, /* deferred_inline_function */ |
3156 | /* The DWARF 2 backend tries to reduce debugging bloat by not | |
3157 | emitting the abstract description of inline functions until | |
3158 | something tries to reference them. */ | |
3159 | dwarf2out_abstract_function, /* outlining_inline_function */ | |
3160 | debug_nothing_rtx /* label */ | |
7f905405 NB |
3161 | }; |
3162 | \f | |
7d9d8943 AM |
3163 | /* NOTE: In the comments in this file, many references are made to |
3164 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
3165 | throughout the remainder of this file. */ | |
3166 | ||
3167 | /* An internal representation of the DWARF output is built, and then | |
3168 | walked to generate the DWARF debugging info. The walk of the internal | |
3169 | representation is done after the entire program has been compiled. | |
3170 | The types below are used to describe the internal representation. */ | |
3171 | ||
3172 | /* Various DIE's use offsets relative to the beginning of the | |
3173 | .debug_info section to refer to each other. */ | |
3174 | ||
3175 | typedef long int dw_offset; | |
3176 | ||
3177 | /* Define typedefs here to avoid circular dependencies. */ | |
3178 | ||
3179 | typedef struct dw_attr_struct *dw_attr_ref; | |
3180 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
3181 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
3182 | typedef struct pubname_struct *pubname_ref; | |
a20612aa | 3183 | typedef struct dw_ranges_struct *dw_ranges_ref; |
7d9d8943 AM |
3184 | |
3185 | /* Each entry in the line_info_table maintains the file and | |
3186 | line number associated with the label generated for that | |
3187 | entry. The label gives the PC value associated with | |
3188 | the line number entry. */ | |
3189 | ||
3190 | typedef struct dw_line_info_struct | |
3191 | { | |
3192 | unsigned long dw_file_num; | |
3193 | unsigned long dw_line_num; | |
3194 | } | |
3195 | dw_line_info_entry; | |
3196 | ||
3197 | /* Line information for functions in separate sections; each one gets its | |
3198 | own sequence. */ | |
3199 | typedef struct dw_separate_line_info_struct | |
3200 | { | |
3201 | unsigned long dw_file_num; | |
3202 | unsigned long dw_line_num; | |
3203 | unsigned long function; | |
3204 | } | |
3205 | dw_separate_line_info_entry; | |
3206 | ||
3207 | /* Each DIE attribute has a field specifying the attribute kind, | |
3208 | a link to the next attribute in the chain, and an attribute value. | |
3209 | Attributes are typically linked below the DIE they modify. */ | |
3210 | ||
3211 | typedef struct dw_attr_struct | |
3212 | { | |
3213 | enum dwarf_attribute dw_attr; | |
3214 | dw_attr_ref dw_attr_next; | |
3215 | dw_val_node dw_attr_val; | |
3216 | } | |
3217 | dw_attr_node; | |
3218 | ||
3219 | /* The Debugging Information Entry (DIE) structure */ | |
3220 | ||
3221 | typedef struct die_struct | |
3222 | { | |
3223 | enum dwarf_tag die_tag; | |
881c6935 | 3224 | char *die_symbol; |
7d9d8943 AM |
3225 | dw_attr_ref die_attr; |
3226 | dw_die_ref die_parent; | |
3227 | dw_die_ref die_child; | |
3228 | dw_die_ref die_sib; | |
3229 | dw_offset die_offset; | |
3230 | unsigned long die_abbrev; | |
1bfb5f8f | 3231 | int die_mark; |
7d9d8943 AM |
3232 | } |
3233 | die_node; | |
3234 | ||
3235 | /* The pubname structure */ | |
3236 | ||
3237 | typedef struct pubname_struct | |
3238 | { | |
3239 | dw_die_ref die; | |
556273e0 | 3240 | char *name; |
7d9d8943 AM |
3241 | } |
3242 | pubname_entry; | |
3243 | ||
a20612aa RH |
3244 | struct dw_ranges_struct |
3245 | { | |
3246 | int block_num; | |
3247 | }; | |
3248 | ||
7d9d8943 AM |
3249 | /* The limbo die list structure. */ |
3250 | typedef struct limbo_die_struct | |
3251 | { | |
3252 | dw_die_ref die; | |
54ba1f0d | 3253 | tree created_for; |
7d9d8943 AM |
3254 | struct limbo_die_struct *next; |
3255 | } | |
3256 | limbo_die_node; | |
3257 | ||
3258 | /* How to start an assembler comment. */ | |
3259 | #ifndef ASM_COMMENT_START | |
3260 | #define ASM_COMMENT_START ";#" | |
3261 | #endif | |
3262 | ||
cc2902df | 3263 | /* Define a macro which returns nonzero for a TYPE_DECL which was |
7d9d8943 AM |
3264 | implicitly generated for a tagged type. |
3265 | ||
3266 | Note that unlike the gcc front end (which generates a NULL named | |
3267 | TYPE_DECL node for each complete tagged type, each array type, and | |
3268 | each function type node created) the g++ front end generates a | |
3269 | _named_ TYPE_DECL node for each tagged type node created. | |
3270 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
3271 | generate a DW_TAG_typedef DIE for them. */ | |
3272 | ||
3273 | #define TYPE_DECL_IS_STUB(decl) \ | |
3274 | (DECL_NAME (decl) == NULL_TREE \ | |
3275 | || (DECL_ARTIFICIAL (decl) \ | |
3276 | && is_tagged_type (TREE_TYPE (decl)) \ | |
3277 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ | |
3278 | /* This is necessary for stub decls that \ | |
3279 | appear in nested inline functions. */ \ | |
3280 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
3281 | && (decl_ultimate_origin (decl) \ | |
3282 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3283 | ||
3284 | /* Information concerning the compilation unit's programming | |
3285 | language, and compiler version. */ | |
3286 | ||
7d9d8943 AM |
3287 | /* Fixed size portion of the DWARF compilation unit header. */ |
3288 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
3289 | ||
7d9d8943 AM |
3290 | /* Fixed size portion of public names info. */ |
3291 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
3292 | ||
3293 | /* Fixed size portion of the address range info. */ | |
3294 | #define DWARF_ARANGES_HEADER_SIZE \ | |
3295 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \ | |
3296 | - DWARF_OFFSET_SIZE) | |
3297 | ||
3298 | /* Size of padding portion in the address range info. It must be | |
3299 | aligned to twice the pointer size. */ | |
3300 | #define DWARF_ARANGES_PAD_SIZE \ | |
3301 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \ | |
3302 | - (2 * DWARF_OFFSET_SIZE + 4)) | |
3303 | ||
9d147085 | 3304 | /* Use assembler line directives if available. */ |
7d9d8943 | 3305 | #ifndef DWARF2_ASM_LINE_DEBUG_INFO |
9d147085 RH |
3306 | #ifdef HAVE_AS_DWARF2_DEBUG_LINE |
3307 | #define DWARF2_ASM_LINE_DEBUG_INFO 1 | |
3308 | #else | |
7d9d8943 AM |
3309 | #define DWARF2_ASM_LINE_DEBUG_INFO 0 |
3310 | #endif | |
9d147085 | 3311 | #endif |
7d9d8943 | 3312 | |
7d9d8943 AM |
3313 | /* Minimum line offset in a special line info. opcode. |
3314 | This value was chosen to give a reasonable range of values. */ | |
3315 | #define DWARF_LINE_BASE -10 | |
3316 | ||
a1f300c0 | 3317 | /* First special line opcode - leave room for the standard opcodes. */ |
7d9d8943 AM |
3318 | #define DWARF_LINE_OPCODE_BASE 10 |
3319 | ||
3320 | /* Range of line offsets in a special line info. opcode. */ | |
3321 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
3322 | ||
3323 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
3324 | In the present implementation, we do not mark any lines as | |
3325 | the beginning of a source statement, because that information | |
3326 | is not made available by the GCC front-end. */ | |
3327 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
3328 | ||
3329 | /* This location is used by calc_die_sizes() to keep track | |
3330 | the offset of each DIE within the .debug_info section. */ | |
3331 | static unsigned long next_die_offset; | |
3332 | ||
3333 | /* Record the root of the DIE's built for the current compilation unit. */ | |
3334 | static dw_die_ref comp_unit_die; | |
3335 | ||
3336 | /* A list of DIEs with a NULL parent waiting to be relocated. */ | |
3337 | static limbo_die_node *limbo_die_list = 0; | |
3338 | ||
2e18bbae RH |
3339 | /* Structure used by lookup_filename to manage sets of filenames. */ |
3340 | struct file_table | |
3341 | { | |
3342 | char **table; | |
3343 | unsigned allocated; | |
3344 | unsigned in_use; | |
3345 | unsigned last_lookup_index; | |
3346 | }; | |
7d9d8943 AM |
3347 | |
3348 | /* Size (in elements) of increments by which we may expand the filename | |
3349 | table. */ | |
3350 | #define FILE_TABLE_INCREMENT 64 | |
3351 | ||
981975b6 RH |
3352 | /* Filenames referenced by this compilation unit. */ |
3353 | static struct file_table file_table; | |
2e18bbae | 3354 | |
7d9d8943 AM |
3355 | /* Local pointer to the name of the main input file. Initialized in |
3356 | dwarf2out_init. */ | |
3357 | static const char *primary_filename; | |
3358 | ||
3359 | /* A pointer to the base of a table of references to DIE's that describe | |
3360 | declarations. The table is indexed by DECL_UID() which is a unique | |
3361 | number identifying each decl. */ | |
3362 | static dw_die_ref *decl_die_table; | |
3363 | ||
3364 | /* Number of elements currently allocated for the decl_die_table. */ | |
3365 | static unsigned decl_die_table_allocated; | |
3366 | ||
3367 | /* Number of elements in decl_die_table currently in use. */ | |
3368 | static unsigned decl_die_table_in_use; | |
3369 | ||
3370 | /* Size (in elements) of increments by which we may expand the | |
3371 | decl_die_table. */ | |
3372 | #define DECL_DIE_TABLE_INCREMENT 256 | |
3373 | ||
7d9d8943 AM |
3374 | /* A pointer to the base of a list of references to DIE's that |
3375 | are uniquely identified by their tag, presence/absence of | |
3376 | children DIE's, and list of attribute/value pairs. */ | |
3377 | static dw_die_ref *abbrev_die_table; | |
3378 | ||
3379 | /* Number of elements currently allocated for abbrev_die_table. */ | |
3380 | static unsigned abbrev_die_table_allocated; | |
3381 | ||
3382 | /* Number of elements in type_die_table currently in use. */ | |
3383 | static unsigned abbrev_die_table_in_use; | |
3384 | ||
3385 | /* Size (in elements) of increments by which we may expand the | |
3386 | abbrev_die_table. */ | |
3387 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
3388 | ||
3389 | /* A pointer to the base of a table that contains line information | |
3390 | for each source code line in .text in the compilation unit. */ | |
3391 | static dw_line_info_ref line_info_table; | |
3392 | ||
3393 | /* Number of elements currently allocated for line_info_table. */ | |
3394 | static unsigned line_info_table_allocated; | |
3395 | ||
3396 | /* Number of elements in separate_line_info_table currently in use. */ | |
3397 | static unsigned separate_line_info_table_in_use; | |
3398 | ||
3399 | /* A pointer to the base of a table that contains line information | |
3400 | for each source code line outside of .text in the compilation unit. */ | |
3401 | static dw_separate_line_info_ref separate_line_info_table; | |
3402 | ||
3403 | /* Number of elements currently allocated for separate_line_info_table. */ | |
3404 | static unsigned separate_line_info_table_allocated; | |
3405 | ||
3406 | /* Number of elements in line_info_table currently in use. */ | |
3407 | static unsigned line_info_table_in_use; | |
3408 | ||
3409 | /* Size (in elements) of increments by which we may expand the | |
3410 | line_info_table. */ | |
3411 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
3412 | ||
3413 | /* A pointer to the base of a table that contains a list of publicly | |
3414 | accessible names. */ | |
3415 | static pubname_ref pubname_table; | |
3416 | ||
3417 | /* Number of elements currently allocated for pubname_table. */ | |
3418 | static unsigned pubname_table_allocated; | |
3419 | ||
3420 | /* Number of elements in pubname_table currently in use. */ | |
3421 | static unsigned pubname_table_in_use; | |
3422 | ||
3423 | /* Size (in elements) of increments by which we may expand the | |
3424 | pubname_table. */ | |
3425 | #define PUBNAME_TABLE_INCREMENT 64 | |
3426 | ||
a20612aa RH |
3427 | /* Array of dies for which we should generate .debug_arange info. */ |
3428 | static dw_die_ref *arange_table; | |
7d9d8943 AM |
3429 | |
3430 | /* Number of elements currently allocated for arange_table. */ | |
3431 | static unsigned arange_table_allocated; | |
3432 | ||
3433 | /* Number of elements in arange_table currently in use. */ | |
3434 | static unsigned arange_table_in_use; | |
3435 | ||
3436 | /* Size (in elements) of increments by which we may expand the | |
3437 | arange_table. */ | |
3438 | #define ARANGE_TABLE_INCREMENT 64 | |
3439 | ||
a20612aa RH |
3440 | /* Array of dies for which we should generate .debug_ranges info. */ |
3441 | static dw_ranges_ref ranges_table; | |
3442 | ||
3443 | /* Number of elements currently allocated for ranges_table. */ | |
3444 | static unsigned ranges_table_allocated; | |
3445 | ||
3446 | /* Number of elements in ranges_table currently in use. */ | |
3447 | static unsigned ranges_table_in_use; | |
3448 | ||
3449 | /* Size (in elements) of increments by which we may expand the | |
3450 | ranges_table. */ | |
3451 | #define RANGES_TABLE_INCREMENT 64 | |
3452 | ||
63e46568 DB |
3453 | /* Whether we have location lists that need outputting */ |
3454 | static unsigned have_location_lists; | |
3455 | ||
7d9d8943 AM |
3456 | /* Record whether the function being analyzed contains inlined functions. */ |
3457 | static int current_function_has_inlines; | |
3458 | #if 0 && defined (MIPS_DEBUGGING_INFO) | |
3459 | static int comp_unit_has_inlines; | |
3460 | #endif | |
3461 | ||
7d9d8943 AM |
3462 | /* Forward declarations for functions defined in this file. */ |
3463 | ||
3464 | static int is_pseudo_reg PARAMS ((rtx)); | |
3465 | static tree type_main_variant PARAMS ((tree)); | |
3466 | static int is_tagged_type PARAMS ((tree)); | |
3467 | static const char *dwarf_tag_name PARAMS ((unsigned)); | |
3468 | static const char *dwarf_attr_name PARAMS ((unsigned)); | |
3469 | static const char *dwarf_form_name PARAMS ((unsigned)); | |
3470 | #if 0 | |
3471 | static const char *dwarf_type_encoding_name PARAMS ((unsigned)); | |
3472 | #endif | |
3473 | static tree decl_ultimate_origin PARAMS ((tree)); | |
3474 | static tree block_ultimate_origin PARAMS ((tree)); | |
3475 | static tree decl_class_context PARAMS ((tree)); | |
3476 | static void add_dwarf_attr PARAMS ((dw_die_ref, dw_attr_ref)); | |
2ad9852d | 3477 | static inline dw_val_class AT_class PARAMS ((dw_attr_ref)); |
7d9d8943 AM |
3478 | static void add_AT_flag PARAMS ((dw_die_ref, |
3479 | enum dwarf_attribute, | |
3480 | unsigned)); | |
2ad9852d | 3481 | static inline unsigned AT_flag PARAMS ((dw_attr_ref)); |
7d9d8943 AM |
3482 | static void add_AT_int PARAMS ((dw_die_ref, |
3483 | enum dwarf_attribute, long)); | |
2ad9852d | 3484 | static inline long int AT_int PARAMS ((dw_attr_ref)); |
7d9d8943 AM |
3485 | static void add_AT_unsigned PARAMS ((dw_die_ref, |
3486 | enum dwarf_attribute, | |
3487 | unsigned long)); | |
2ad9852d | 3488 | static inline unsigned long AT_unsigned PARAMS ((dw_attr_ref)); |
7d9d8943 AM |
3489 | static void add_AT_long_long PARAMS ((dw_die_ref, |
3490 | enum dwarf_attribute, | |
3491 | unsigned long, | |
3492 | unsigned long)); | |
3493 | static void add_AT_float PARAMS ((dw_die_ref, | |
3494 | enum dwarf_attribute, | |
3495 | unsigned, long *)); | |
3496 | static void add_AT_string PARAMS ((dw_die_ref, | |
3497 | enum dwarf_attribute, | |
3498 | const char *)); | |
2ad9852d RK |
3499 | static inline const char *AT_string PARAMS ((dw_attr_ref)); |
3500 | static int AT_string_form PARAMS ((dw_attr_ref)); | |
7d9d8943 AM |
3501 | static void add_AT_die_ref PARAMS ((dw_die_ref, |
3502 | enum dwarf_attribute, | |
3503 | dw_die_ref)); | |
2ad9852d RK |
3504 | static inline dw_die_ref AT_ref PARAMS ((dw_attr_ref)); |
3505 | static inline int AT_ref_external PARAMS ((dw_attr_ref)); | |
3506 | static inline void set_AT_ref_external PARAMS ((dw_attr_ref, int)); | |
7d9d8943 AM |
3507 | static void add_AT_fde_ref PARAMS ((dw_die_ref, |
3508 | enum dwarf_attribute, | |
3509 | unsigned)); | |
3510 | static void add_AT_loc PARAMS ((dw_die_ref, | |
3511 | enum dwarf_attribute, | |
3512 | dw_loc_descr_ref)); | |
2ad9852d | 3513 | static inline dw_loc_descr_ref AT_loc PARAMS ((dw_attr_ref)); |
63e46568 DB |
3514 | static void add_AT_loc_list PARAMS ((dw_die_ref, |
3515 | enum dwarf_attribute, | |
3516 | dw_loc_list_ref)); | |
2ad9852d | 3517 | static inline dw_loc_list_ref AT_loc_list PARAMS ((dw_attr_ref)); |
7d9d8943 AM |
3518 | static void add_AT_addr PARAMS ((dw_die_ref, |
3519 | enum dwarf_attribute, | |
3520 | rtx)); | |
2ad9852d | 3521 | static inline rtx AT_addr PARAMS ((dw_attr_ref)); |
7d9d8943 AM |
3522 | static void add_AT_lbl_id PARAMS ((dw_die_ref, |
3523 | enum dwarf_attribute, | |
3524 | const char *)); | |
3525 | static void add_AT_lbl_offset PARAMS ((dw_die_ref, | |
3526 | enum dwarf_attribute, | |
3527 | const char *)); | |
a20612aa RH |
3528 | static void add_AT_offset PARAMS ((dw_die_ref, |
3529 | enum dwarf_attribute, | |
3530 | unsigned long)); | |
2bee6045 JJ |
3531 | static void add_AT_range_list PARAMS ((dw_die_ref, |
3532 | enum dwarf_attribute, | |
3533 | unsigned long)); | |
2ad9852d | 3534 | static inline const char *AT_lbl PARAMS ((dw_attr_ref)); |
7d9d8943 AM |
3535 | static dw_attr_ref get_AT PARAMS ((dw_die_ref, |
3536 | enum dwarf_attribute)); | |
3537 | static const char *get_AT_low_pc PARAMS ((dw_die_ref)); | |
3538 | static const char *get_AT_hi_pc PARAMS ((dw_die_ref)); | |
3539 | static const char *get_AT_string PARAMS ((dw_die_ref, | |
3540 | enum dwarf_attribute)); | |
3541 | static int get_AT_flag PARAMS ((dw_die_ref, | |
3542 | enum dwarf_attribute)); | |
3543 | static unsigned get_AT_unsigned PARAMS ((dw_die_ref, | |
3544 | enum dwarf_attribute)); | |
3545 | static inline dw_die_ref get_AT_ref PARAMS ((dw_die_ref, | |
3546 | enum dwarf_attribute)); | |
3547 | static int is_c_family PARAMS ((void)); | |
710af899 | 3548 | static int is_cxx PARAMS ((void)); |
28985b81 | 3549 | static int is_java PARAMS ((void)); |
7d9d8943 AM |
3550 | static int is_fortran PARAMS ((void)); |
3551 | static void remove_AT PARAMS ((dw_die_ref, | |
3552 | enum dwarf_attribute)); | |
2ad9852d | 3553 | static inline void free_die PARAMS ((dw_die_ref)); |
7d9d8943 AM |
3554 | static void remove_children PARAMS ((dw_die_ref)); |
3555 | static void add_child_die PARAMS ((dw_die_ref, dw_die_ref)); | |
54ba1f0d RH |
3556 | static dw_die_ref new_die PARAMS ((enum dwarf_tag, dw_die_ref, |
3557 | tree)); | |
7d9d8943 AM |
3558 | static dw_die_ref lookup_type_die PARAMS ((tree)); |
3559 | static void equate_type_number_to_die PARAMS ((tree, dw_die_ref)); | |
3560 | static dw_die_ref lookup_decl_die PARAMS ((tree)); | |
3561 | static void equate_decl_number_to_die PARAMS ((tree, dw_die_ref)); | |
3562 | static void print_spaces PARAMS ((FILE *)); | |
3563 | static void print_die PARAMS ((dw_die_ref, FILE *)); | |
3564 | static void print_dwarf_line_table PARAMS ((FILE *)); | |
881c6935 JM |
3565 | static void reverse_die_lists PARAMS ((dw_die_ref)); |
3566 | static void reverse_all_dies PARAMS ((dw_die_ref)); | |
3567 | static dw_die_ref push_new_compile_unit PARAMS ((dw_die_ref, dw_die_ref)); | |
3568 | static dw_die_ref pop_compile_unit PARAMS ((dw_die_ref)); | |
2ad9852d RK |
3569 | static void loc_checksum PARAMS ((dw_loc_descr_ref, |
3570 | struct md5_ctx *)); | |
3571 | static void attr_checksum PARAMS ((dw_attr_ref, | |
3572 | struct md5_ctx *)); | |
3573 | static void die_checksum PARAMS ((dw_die_ref, | |
3574 | struct md5_ctx *)); | |
881c6935 JM |
3575 | static void compute_section_prefix PARAMS ((dw_die_ref)); |
3576 | static int is_type_die PARAMS ((dw_die_ref)); | |
3577 | static int is_comdat_die PARAMS ((dw_die_ref)); | |
3578 | static int is_symbol_die PARAMS ((dw_die_ref)); | |
881c6935 JM |
3579 | static void assign_symbol_names PARAMS ((dw_die_ref)); |
3580 | static void break_out_includes PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3581 | static void add_sibling_attributes PARAMS ((dw_die_ref)); |
3582 | static void build_abbrev_table PARAMS ((dw_die_ref)); | |
63e46568 | 3583 | static void output_location_lists PARAMS ((dw_die_ref)); |
7d9d8943 AM |
3584 | static int constant_size PARAMS ((long unsigned)); |
3585 | static unsigned long size_of_die PARAMS ((dw_die_ref)); | |
3586 | static void calc_die_sizes PARAMS ((dw_die_ref)); | |
1bfb5f8f JM |
3587 | static void mark_dies PARAMS ((dw_die_ref)); |
3588 | static void unmark_dies PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3589 | static unsigned long size_of_pubnames PARAMS ((void)); |
3590 | static unsigned long size_of_aranges PARAMS ((void)); | |
3591 | static enum dwarf_form value_format PARAMS ((dw_attr_ref)); | |
3592 | static void output_value_format PARAMS ((dw_attr_ref)); | |
3593 | static void output_abbrev_section PARAMS ((void)); | |
881c6935 | 3594 | static void output_die_symbol PARAMS ((dw_die_ref)); |
7d9d8943 AM |
3595 | static void output_die PARAMS ((dw_die_ref)); |
3596 | static void output_compilation_unit_header PARAMS ((void)); | |
881c6935 | 3597 | static void output_comp_unit PARAMS ((dw_die_ref)); |
7d9d8943 AM |
3598 | static const char *dwarf2_name PARAMS ((tree, int)); |
3599 | static void add_pubname PARAMS ((tree, dw_die_ref)); | |
3600 | static void output_pubnames PARAMS ((void)); | |
3601 | static void add_arange PARAMS ((tree, dw_die_ref)); | |
3602 | static void output_aranges PARAMS ((void)); | |
a20612aa RH |
3603 | static unsigned int add_ranges PARAMS ((tree)); |
3604 | static void output_ranges PARAMS ((void)); | |
7d9d8943 | 3605 | static void output_line_info PARAMS ((void)); |
0b34cf1e | 3606 | static void output_file_names PARAMS ((void)); |
7d9d8943 AM |
3607 | static dw_die_ref base_type_die PARAMS ((tree)); |
3608 | static tree root_type PARAMS ((tree)); | |
3609 | static int is_base_type PARAMS ((tree)); | |
3610 | static dw_die_ref modified_type_die PARAMS ((tree, int, int, dw_die_ref)); | |
3611 | static int type_is_enum PARAMS ((tree)); | |
3612 | static unsigned int reg_number PARAMS ((rtx)); | |
3613 | static dw_loc_descr_ref reg_loc_descriptor PARAMS ((rtx)); | |
d8041cc8 | 3614 | static dw_loc_descr_ref int_loc_descriptor PARAMS ((HOST_WIDE_INT)); |
7d9d8943 AM |
3615 | static dw_loc_descr_ref based_loc_descr PARAMS ((unsigned, long)); |
3616 | static int is_based_loc PARAMS ((rtx)); | |
3617 | static dw_loc_descr_ref mem_loc_descriptor PARAMS ((rtx, enum machine_mode mode)); | |
3618 | static dw_loc_descr_ref concat_loc_descriptor PARAMS ((rtx, rtx)); | |
3619 | static dw_loc_descr_ref loc_descriptor PARAMS ((rtx)); | |
d8041cc8 | 3620 | static dw_loc_descr_ref loc_descriptor_from_tree PARAMS ((tree, int)); |
7d9d8943 AM |
3621 | static HOST_WIDE_INT ceiling PARAMS ((HOST_WIDE_INT, unsigned int)); |
3622 | static tree field_type PARAMS ((tree)); | |
3623 | static unsigned int simple_type_align_in_bits PARAMS ((tree)); | |
5f446d21 | 3624 | static unsigned int simple_decl_align_in_bits PARAMS ((tree)); |
7d9d8943 AM |
3625 | static unsigned HOST_WIDE_INT simple_type_size_in_bits PARAMS ((tree)); |
3626 | static HOST_WIDE_INT field_byte_offset PARAMS ((tree)); | |
3627 | static void add_AT_location_description PARAMS ((dw_die_ref, | |
b9203463 RH |
3628 | enum dwarf_attribute, |
3629 | dw_loc_descr_ref)); | |
7d9d8943 AM |
3630 | static void add_data_member_location_attribute PARAMS ((dw_die_ref, tree)); |
3631 | static void add_const_value_attribute PARAMS ((dw_die_ref, rtx)); | |
d8041cc8 | 3632 | static rtx rtl_for_decl_location PARAMS ((tree)); |
7d9d8943 | 3633 | static void add_location_or_const_value_attribute PARAMS ((dw_die_ref, tree)); |
1bfb5f8f | 3634 | static void tree_add_const_value_attribute PARAMS ((dw_die_ref, tree)); |
7d9d8943 AM |
3635 | static void add_name_attribute PARAMS ((dw_die_ref, const char *)); |
3636 | static void add_bound_info PARAMS ((dw_die_ref, | |
3637 | enum dwarf_attribute, tree)); | |
3638 | static void add_subscript_info PARAMS ((dw_die_ref, tree)); | |
3639 | static void add_byte_size_attribute PARAMS ((dw_die_ref, tree)); | |
3640 | static void add_bit_offset_attribute PARAMS ((dw_die_ref, tree)); | |
3641 | static void add_bit_size_attribute PARAMS ((dw_die_ref, tree)); | |
3642 | static void add_prototyped_attribute PARAMS ((dw_die_ref, tree)); | |
3643 | static void add_abstract_origin_attribute PARAMS ((dw_die_ref, tree)); | |
3644 | static void add_pure_or_virtual_attribute PARAMS ((dw_die_ref, tree)); | |
3645 | static void add_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
3646 | static void add_name_and_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
3647 | static void push_decl_scope PARAMS ((tree)); | |
7d9d8943 | 3648 | static void pop_decl_scope PARAMS ((void)); |
2ad9852d RK |
3649 | static dw_die_ref scope_die_for PARAMS ((tree, dw_die_ref)); |
3650 | static inline int local_scope_p PARAMS ((dw_die_ref)); | |
3651 | static inline int class_scope_p PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3652 | static void add_type_attribute PARAMS ((dw_die_ref, tree, int, int, |
3653 | dw_die_ref)); | |
3654 | static const char *type_tag PARAMS ((tree)); | |
3655 | static tree member_declared_type PARAMS ((tree)); | |
3656 | #if 0 | |
3657 | static const char *decl_start_label PARAMS ((tree)); | |
3658 | #endif | |
3659 | static void gen_array_type_die PARAMS ((tree, dw_die_ref)); | |
3660 | static void gen_set_type_die PARAMS ((tree, dw_die_ref)); | |
3661 | #if 0 | |
3662 | static void gen_entry_point_die PARAMS ((tree, dw_die_ref)); | |
3663 | #endif | |
3664 | static void gen_inlined_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
3665 | static void gen_inlined_structure_type_die PARAMS ((tree, dw_die_ref)); | |
3666 | static void gen_inlined_union_type_die PARAMS ((tree, dw_die_ref)); | |
3667 | static void gen_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
3668 | static dw_die_ref gen_formal_parameter_die PARAMS ((tree, dw_die_ref)); | |
3669 | static void gen_unspecified_parameters_die PARAMS ((tree, dw_die_ref)); | |
3670 | static void gen_formal_types_die PARAMS ((tree, dw_die_ref)); | |
3671 | static void gen_subprogram_die PARAMS ((tree, dw_die_ref)); | |
3672 | static void gen_variable_die PARAMS ((tree, dw_die_ref)); | |
3673 | static void gen_label_die PARAMS ((tree, dw_die_ref)); | |
3674 | static void gen_lexical_block_die PARAMS ((tree, dw_die_ref, int)); | |
3675 | static void gen_inlined_subroutine_die PARAMS ((tree, dw_die_ref, int)); | |
3676 | static void gen_field_die PARAMS ((tree, dw_die_ref)); | |
3677 | static void gen_ptr_to_mbr_type_die PARAMS ((tree, dw_die_ref)); | |
3678 | static dw_die_ref gen_compile_unit_die PARAMS ((const char *)); | |
3679 | static void gen_string_type_die PARAMS ((tree, dw_die_ref)); | |
3680 | static void gen_inheritance_die PARAMS ((tree, dw_die_ref)); | |
3681 | static void gen_member_die PARAMS ((tree, dw_die_ref)); | |
3682 | static void gen_struct_or_union_type_die PARAMS ((tree, dw_die_ref)); | |
3683 | static void gen_subroutine_type_die PARAMS ((tree, dw_die_ref)); | |
3684 | static void gen_typedef_die PARAMS ((tree, dw_die_ref)); | |
3685 | static void gen_type_die PARAMS ((tree, dw_die_ref)); | |
3686 | static void gen_tagged_type_instantiation_die PARAMS ((tree, dw_die_ref)); | |
3687 | static void gen_block_die PARAMS ((tree, dw_die_ref, int)); | |
3688 | static void decls_for_scope PARAMS ((tree, dw_die_ref, int)); | |
3689 | static int is_redundant_typedef PARAMS ((tree)); | |
3690 | static void gen_decl_die PARAMS ((tree, dw_die_ref)); | |
981975b6 RH |
3691 | static unsigned lookup_filename PARAMS ((const char *)); |
3692 | static void init_file_table PARAMS ((void)); | |
7d9d8943 AM |
3693 | static void retry_incomplete_types PARAMS ((void)); |
3694 | static void gen_type_die_for_member PARAMS ((tree, tree, dw_die_ref)); | |
7d9d8943 | 3695 | static void splice_child_die PARAMS ((dw_die_ref, dw_die_ref)); |
fc608b03 | 3696 | static int file_info_cmp PARAMS ((const void *, const void *)); |
c26fbbca | 3697 | static dw_loc_list_ref new_loc_list PARAMS ((dw_loc_descr_ref, |
84a5b4f8 DB |
3698 | const char *, const char *, |
3699 | const char *, unsigned)); | |
3700 | static void add_loc_descr_to_loc_list PARAMS ((dw_loc_list_ref *, | |
3701 | dw_loc_descr_ref, | |
3702 | const char *, const char *, const char *)); | |
3703 | static void output_loc_list PARAMS ((dw_loc_list_ref)); | |
3704 | static char *gen_internal_sym PARAMS ((const char *)); | |
54ba1f0d | 3705 | static void mark_limbo_die_list PARAMS ((void *)); |
7d9d8943 AM |
3706 | |
3707 | /* Section names used to hold DWARF debugging information. */ | |
3708 | #ifndef DEBUG_INFO_SECTION | |
3709 | #define DEBUG_INFO_SECTION ".debug_info" | |
3710 | #endif | |
9d2f2c45 RH |
3711 | #ifndef DEBUG_ABBREV_SECTION |
3712 | #define DEBUG_ABBREV_SECTION ".debug_abbrev" | |
7d9d8943 | 3713 | #endif |
9d2f2c45 RH |
3714 | #ifndef DEBUG_ARANGES_SECTION |
3715 | #define DEBUG_ARANGES_SECTION ".debug_aranges" | |
7d9d8943 | 3716 | #endif |
9d2f2c45 RH |
3717 | #ifndef DEBUG_MACINFO_SECTION |
3718 | #define DEBUG_MACINFO_SECTION ".debug_macinfo" | |
7d9d8943 AM |
3719 | #endif |
3720 | #ifndef DEBUG_LINE_SECTION | |
3721 | #define DEBUG_LINE_SECTION ".debug_line" | |
3722 | #endif | |
9d2f2c45 RH |
3723 | #ifndef DEBUG_LOC_SECTION |
3724 | #define DEBUG_LOC_SECTION ".debug_loc" | |
7d9d8943 | 3725 | #endif |
9d2f2c45 RH |
3726 | #ifndef DEBUG_PUBNAMES_SECTION |
3727 | #define DEBUG_PUBNAMES_SECTION ".debug_pubnames" | |
7d9d8943 | 3728 | #endif |
9d2f2c45 RH |
3729 | #ifndef DEBUG_STR_SECTION |
3730 | #define DEBUG_STR_SECTION ".debug_str" | |
7d9d8943 | 3731 | #endif |
a20612aa RH |
3732 | #ifndef DEBUG_RANGES_SECTION |
3733 | #define DEBUG_RANGES_SECTION ".debug_ranges" | |
3734 | #endif | |
7d9d8943 AM |
3735 | |
3736 | /* Standard ELF section names for compiled code and data. */ | |
f99ffb60 RH |
3737 | #ifndef TEXT_SECTION_NAME |
3738 | #define TEXT_SECTION_NAME ".text" | |
7d9d8943 AM |
3739 | #endif |
3740 | ||
9eb4015a JJ |
3741 | /* Section flags for .debug_str section. */ |
3742 | #ifdef HAVE_GAS_SHF_MERGE | |
3743 | #define DEBUG_STR_SECTION_FLAGS \ | |
3744 | (SECTION_DEBUG | SECTION_MERGE | SECTION_STRINGS | 1) | |
3745 | #else | |
3746 | #define DEBUG_STR_SECTION_FLAGS SECTION_DEBUG | |
3747 | #endif | |
3748 | ||
7d9d8943 | 3749 | /* Labels we insert at beginning sections we can reference instead of |
556273e0 | 3750 | the section names themselves. */ |
7d9d8943 AM |
3751 | |
3752 | #ifndef TEXT_SECTION_LABEL | |
9d2f2c45 | 3753 | #define TEXT_SECTION_LABEL "Ltext" |
7d9d8943 AM |
3754 | #endif |
3755 | #ifndef DEBUG_LINE_SECTION_LABEL | |
9d2f2c45 | 3756 | #define DEBUG_LINE_SECTION_LABEL "Ldebug_line" |
7d9d8943 AM |
3757 | #endif |
3758 | #ifndef DEBUG_INFO_SECTION_LABEL | |
9d2f2c45 | 3759 | #define DEBUG_INFO_SECTION_LABEL "Ldebug_info" |
7d9d8943 | 3760 | #endif |
9d2f2c45 RH |
3761 | #ifndef DEBUG_ABBREV_SECTION_LABEL |
3762 | #define DEBUG_ABBREV_SECTION_LABEL "Ldebug_abbrev" | |
7d9d8943 | 3763 | #endif |
9d2f2c45 RH |
3764 | #ifndef DEBUG_LOC_SECTION_LABEL |
3765 | #define DEBUG_LOC_SECTION_LABEL "Ldebug_loc" | |
63e46568 | 3766 | #endif |
2bee6045 JJ |
3767 | #ifndef DEBUG_RANGES_SECTION_LABEL |
3768 | #define DEBUG_RANGES_SECTION_LABEL "Ldebug_ranges" | |
3769 | #endif | |
84a5b4f8 DB |
3770 | #ifndef DEBUG_MACINFO_SECTION_LABEL |
3771 | #define DEBUG_MACINFO_SECTION_LABEL "Ldebug_macinfo" | |
3772 | #endif | |
a20612aa | 3773 | |
7d9d8943 AM |
3774 | /* Definitions of defaults for formats and names of various special |
3775 | (artificial) labels which may be generated within this file (when the -g | |
3776 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
3777 | If necessary, these may be overridden from within the tm.h file, but | |
3778 | typically, overriding these defaults is unnecessary. */ | |
3779 | ||
3780 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3781 | static char text_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3782 | static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3783 | static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3784 | static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
84a5b4f8 | 3785 | static char macinfo_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
63e46568 | 3786 | static char loc_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
2bee6045 | 3787 | static char ranges_section_label[2 * MAX_ARTIFICIAL_LABEL_BYTES]; |
2ad9852d | 3788 | |
7d9d8943 AM |
3789 | #ifndef TEXT_END_LABEL |
3790 | #define TEXT_END_LABEL "Letext" | |
3791 | #endif | |
7d9d8943 AM |
3792 | #ifndef BLOCK_BEGIN_LABEL |
3793 | #define BLOCK_BEGIN_LABEL "LBB" | |
3794 | #endif | |
3795 | #ifndef BLOCK_END_LABEL | |
3796 | #define BLOCK_END_LABEL "LBE" | |
3797 | #endif | |
7d9d8943 AM |
3798 | #ifndef LINE_CODE_LABEL |
3799 | #define LINE_CODE_LABEL "LM" | |
3800 | #endif | |
3801 | #ifndef SEPARATE_LINE_CODE_LABEL | |
3802 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
3803 | #endif | |
3804 | \f | |
3805 | /* We allow a language front-end to designate a function that is to be | |
3806 | called to "demangle" any name before it it put into a DIE. */ | |
3807 | ||
3808 | static const char *(*demangle_name_func) PARAMS ((const char *)); | |
3809 | ||
3810 | void | |
3811 | dwarf2out_set_demangle_name_func (func) | |
3812 | const char *(*func) PARAMS ((const char *)); | |
3813 | { | |
3814 | demangle_name_func = func; | |
3815 | } | |
7d9d8943 AM |
3816 | |
3817 | /* Test if rtl node points to a pseudo register. */ | |
3818 | ||
3819 | static inline int | |
3820 | is_pseudo_reg (rtl) | |
b3694847 | 3821 | rtx rtl; |
7d9d8943 AM |
3822 | { |
3823 | return ((GET_CODE (rtl) == REG && REGNO (rtl) >= FIRST_PSEUDO_REGISTER) | |
3824 | || (GET_CODE (rtl) == SUBREG | |
ddef6bc7 | 3825 | && REGNO (SUBREG_REG (rtl)) >= FIRST_PSEUDO_REGISTER)); |
7d9d8943 AM |
3826 | } |
3827 | ||
3828 | /* Return a reference to a type, with its const and volatile qualifiers | |
3829 | removed. */ | |
3830 | ||
3831 | static inline tree | |
3832 | type_main_variant (type) | |
b3694847 | 3833 | tree type; |
7d9d8943 AM |
3834 | { |
3835 | type = TYPE_MAIN_VARIANT (type); | |
3836 | ||
2ad9852d RK |
3837 | /* ??? There really should be only one main variant among any group of |
3838 | variants of a given type (and all of the MAIN_VARIANT values for all | |
3839 | members of the group should point to that one type) but sometimes the C | |
3840 | front-end messes this up for array types, so we work around that bug | |
3841 | here. */ | |
7d9d8943 AM |
3842 | if (TREE_CODE (type) == ARRAY_TYPE) |
3843 | while (type != TYPE_MAIN_VARIANT (type)) | |
3844 | type = TYPE_MAIN_VARIANT (type); | |
3845 | ||
3846 | return type; | |
3847 | } | |
3848 | ||
cc2902df | 3849 | /* Return nonzero if the given type node represents a tagged type. */ |
7d9d8943 AM |
3850 | |
3851 | static inline int | |
3852 | is_tagged_type (type) | |
b3694847 | 3853 | tree type; |
7d9d8943 | 3854 | { |
b3694847 | 3855 | enum tree_code code = TREE_CODE (type); |
7d9d8943 AM |
3856 | |
3857 | return (code == RECORD_TYPE || code == UNION_TYPE | |
3858 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
3859 | } | |
3860 | ||
3861 | /* Convert a DIE tag into its string name. */ | |
3862 | ||
3863 | static const char * | |
3864 | dwarf_tag_name (tag) | |
b3694847 | 3865 | unsigned tag; |
7d9d8943 AM |
3866 | { |
3867 | switch (tag) | |
3868 | { | |
3869 | case DW_TAG_padding: | |
3870 | return "DW_TAG_padding"; | |
3871 | case DW_TAG_array_type: | |
3872 | return "DW_TAG_array_type"; | |
3873 | case DW_TAG_class_type: | |
3874 | return "DW_TAG_class_type"; | |
3875 | case DW_TAG_entry_point: | |
3876 | return "DW_TAG_entry_point"; | |
3877 | case DW_TAG_enumeration_type: | |
3878 | return "DW_TAG_enumeration_type"; | |
3879 | case DW_TAG_formal_parameter: | |
3880 | return "DW_TAG_formal_parameter"; | |
3881 | case DW_TAG_imported_declaration: | |
3882 | return "DW_TAG_imported_declaration"; | |
3883 | case DW_TAG_label: | |
3884 | return "DW_TAG_label"; | |
3885 | case DW_TAG_lexical_block: | |
3886 | return "DW_TAG_lexical_block"; | |
3887 | case DW_TAG_member: | |
3888 | return "DW_TAG_member"; | |
3889 | case DW_TAG_pointer_type: | |
3890 | return "DW_TAG_pointer_type"; | |
3891 | case DW_TAG_reference_type: | |
3892 | return "DW_TAG_reference_type"; | |
3893 | case DW_TAG_compile_unit: | |
3894 | return "DW_TAG_compile_unit"; | |
3895 | case DW_TAG_string_type: | |
3896 | return "DW_TAG_string_type"; | |
3897 | case DW_TAG_structure_type: | |
3898 | return "DW_TAG_structure_type"; | |
3899 | case DW_TAG_subroutine_type: | |
3900 | return "DW_TAG_subroutine_type"; | |
3901 | case DW_TAG_typedef: | |
3902 | return "DW_TAG_typedef"; | |
3903 | case DW_TAG_union_type: | |
3904 | return "DW_TAG_union_type"; | |
3905 | case DW_TAG_unspecified_parameters: | |
3906 | return "DW_TAG_unspecified_parameters"; | |
3907 | case DW_TAG_variant: | |
3908 | return "DW_TAG_variant"; | |
3909 | case DW_TAG_common_block: | |
3910 | return "DW_TAG_common_block"; | |
3911 | case DW_TAG_common_inclusion: | |
3912 | return "DW_TAG_common_inclusion"; | |
3913 | case DW_TAG_inheritance: | |
3914 | return "DW_TAG_inheritance"; | |
3915 | case DW_TAG_inlined_subroutine: | |
3916 | return "DW_TAG_inlined_subroutine"; | |
3917 | case DW_TAG_module: | |
3918 | return "DW_TAG_module"; | |
3919 | case DW_TAG_ptr_to_member_type: | |
3920 | return "DW_TAG_ptr_to_member_type"; | |
3921 | case DW_TAG_set_type: | |
3922 | return "DW_TAG_set_type"; | |
3923 | case DW_TAG_subrange_type: | |
3924 | return "DW_TAG_subrange_type"; | |
3925 | case DW_TAG_with_stmt: | |
3926 | return "DW_TAG_with_stmt"; | |
3927 | case DW_TAG_access_declaration: | |
3928 | return "DW_TAG_access_declaration"; | |
3929 | case DW_TAG_base_type: | |
3930 | return "DW_TAG_base_type"; | |
3931 | case DW_TAG_catch_block: | |
3932 | return "DW_TAG_catch_block"; | |
3933 | case DW_TAG_const_type: | |
3934 | return "DW_TAG_const_type"; | |
3935 | case DW_TAG_constant: | |
3936 | return "DW_TAG_constant"; | |
3937 | case DW_TAG_enumerator: | |
3938 | return "DW_TAG_enumerator"; | |
3939 | case DW_TAG_file_type: | |
3940 | return "DW_TAG_file_type"; | |
3941 | case DW_TAG_friend: | |
3942 | return "DW_TAG_friend"; | |
3943 | case DW_TAG_namelist: | |
3944 | return "DW_TAG_namelist"; | |
3945 | case DW_TAG_namelist_item: | |
3946 | return "DW_TAG_namelist_item"; | |
3947 | case DW_TAG_packed_type: | |
3948 | return "DW_TAG_packed_type"; | |
3949 | case DW_TAG_subprogram: | |
3950 | return "DW_TAG_subprogram"; | |
3951 | case DW_TAG_template_type_param: | |
3952 | return "DW_TAG_template_type_param"; | |
3953 | case DW_TAG_template_value_param: | |
3954 | return "DW_TAG_template_value_param"; | |
3955 | case DW_TAG_thrown_type: | |
3956 | return "DW_TAG_thrown_type"; | |
3957 | case DW_TAG_try_block: | |
3958 | return "DW_TAG_try_block"; | |
3959 | case DW_TAG_variant_part: | |
3960 | return "DW_TAG_variant_part"; | |
3961 | case DW_TAG_variable: | |
3962 | return "DW_TAG_variable"; | |
3963 | case DW_TAG_volatile_type: | |
3964 | return "DW_TAG_volatile_type"; | |
3965 | case DW_TAG_MIPS_loop: | |
3966 | return "DW_TAG_MIPS_loop"; | |
3967 | case DW_TAG_format_label: | |
3968 | return "DW_TAG_format_label"; | |
3969 | case DW_TAG_function_template: | |
3970 | return "DW_TAG_function_template"; | |
3971 | case DW_TAG_class_template: | |
3972 | return "DW_TAG_class_template"; | |
881c6935 JM |
3973 | case DW_TAG_GNU_BINCL: |
3974 | return "DW_TAG_GNU_BINCL"; | |
3975 | case DW_TAG_GNU_EINCL: | |
3976 | return "DW_TAG_GNU_EINCL"; | |
7d9d8943 AM |
3977 | default: |
3978 | return "DW_TAG_<unknown>"; | |
3979 | } | |
3980 | } | |
3981 | ||
3982 | /* Convert a DWARF attribute code into its string name. */ | |
3983 | ||
3984 | static const char * | |
3985 | dwarf_attr_name (attr) | |
b3694847 | 3986 | unsigned attr; |
7d9d8943 AM |
3987 | { |
3988 | switch (attr) | |
3989 | { | |
3990 | case DW_AT_sibling: | |
3991 | return "DW_AT_sibling"; | |
3992 | case DW_AT_location: | |
3993 | return "DW_AT_location"; | |
3994 | case DW_AT_name: | |
3995 | return "DW_AT_name"; | |
3996 | case DW_AT_ordering: | |
3997 | return "DW_AT_ordering"; | |
3998 | case DW_AT_subscr_data: | |
3999 | return "DW_AT_subscr_data"; | |
4000 | case DW_AT_byte_size: | |
4001 | return "DW_AT_byte_size"; | |
4002 | case DW_AT_bit_offset: | |
4003 | return "DW_AT_bit_offset"; | |
4004 | case DW_AT_bit_size: | |
4005 | return "DW_AT_bit_size"; | |
4006 | case DW_AT_element_list: | |
4007 | return "DW_AT_element_list"; | |
4008 | case DW_AT_stmt_list: | |
4009 | return "DW_AT_stmt_list"; | |
4010 | case DW_AT_low_pc: | |
4011 | return "DW_AT_low_pc"; | |
4012 | case DW_AT_high_pc: | |
4013 | return "DW_AT_high_pc"; | |
4014 | case DW_AT_language: | |
4015 | return "DW_AT_language"; | |
4016 | case DW_AT_member: | |
4017 | return "DW_AT_member"; | |
4018 | case DW_AT_discr: | |
4019 | return "DW_AT_discr"; | |
4020 | case DW_AT_discr_value: | |
4021 | return "DW_AT_discr_value"; | |
4022 | case DW_AT_visibility: | |
4023 | return "DW_AT_visibility"; | |
4024 | case DW_AT_import: | |
4025 | return "DW_AT_import"; | |
4026 | case DW_AT_string_length: | |
4027 | return "DW_AT_string_length"; | |
4028 | case DW_AT_common_reference: | |
4029 | return "DW_AT_common_reference"; | |
4030 | case DW_AT_comp_dir: | |
4031 | return "DW_AT_comp_dir"; | |
4032 | case DW_AT_const_value: | |
4033 | return "DW_AT_const_value"; | |
4034 | case DW_AT_containing_type: | |
4035 | return "DW_AT_containing_type"; | |
4036 | case DW_AT_default_value: | |
4037 | return "DW_AT_default_value"; | |
4038 | case DW_AT_inline: | |
4039 | return "DW_AT_inline"; | |
4040 | case DW_AT_is_optional: | |
4041 | return "DW_AT_is_optional"; | |
4042 | case DW_AT_lower_bound: | |
4043 | return "DW_AT_lower_bound"; | |
4044 | case DW_AT_producer: | |
4045 | return "DW_AT_producer"; | |
4046 | case DW_AT_prototyped: | |
4047 | return "DW_AT_prototyped"; | |
4048 | case DW_AT_return_addr: | |
4049 | return "DW_AT_return_addr"; | |
4050 | case DW_AT_start_scope: | |
4051 | return "DW_AT_start_scope"; | |
4052 | case DW_AT_stride_size: | |
4053 | return "DW_AT_stride_size"; | |
4054 | case DW_AT_upper_bound: | |
4055 | return "DW_AT_upper_bound"; | |
4056 | case DW_AT_abstract_origin: | |
4057 | return "DW_AT_abstract_origin"; | |
4058 | case DW_AT_accessibility: | |
4059 | return "DW_AT_accessibility"; | |
4060 | case DW_AT_address_class: | |
4061 | return "DW_AT_address_class"; | |
4062 | case DW_AT_artificial: | |
4063 | return "DW_AT_artificial"; | |
4064 | case DW_AT_base_types: | |
4065 | return "DW_AT_base_types"; | |
4066 | case DW_AT_calling_convention: | |
4067 | return "DW_AT_calling_convention"; | |
4068 | case DW_AT_count: | |
4069 | return "DW_AT_count"; | |
4070 | case DW_AT_data_member_location: | |
4071 | return "DW_AT_data_member_location"; | |
4072 | case DW_AT_decl_column: | |
4073 | return "DW_AT_decl_column"; | |
4074 | case DW_AT_decl_file: | |
4075 | return "DW_AT_decl_file"; | |
4076 | case DW_AT_decl_line: | |
4077 | return "DW_AT_decl_line"; | |
4078 | case DW_AT_declaration: | |
4079 | return "DW_AT_declaration"; | |
4080 | case DW_AT_discr_list: | |
4081 | return "DW_AT_discr_list"; | |
4082 | case DW_AT_encoding: | |
4083 | return "DW_AT_encoding"; | |
4084 | case DW_AT_external: | |
4085 | return "DW_AT_external"; | |
4086 | case DW_AT_frame_base: | |
4087 | return "DW_AT_frame_base"; | |
4088 | case DW_AT_friend: | |
4089 | return "DW_AT_friend"; | |
4090 | case DW_AT_identifier_case: | |
4091 | return "DW_AT_identifier_case"; | |
4092 | case DW_AT_macro_info: | |
4093 | return "DW_AT_macro_info"; | |
4094 | case DW_AT_namelist_items: | |
4095 | return "DW_AT_namelist_items"; | |
4096 | case DW_AT_priority: | |
4097 | return "DW_AT_priority"; | |
4098 | case DW_AT_segment: | |
4099 | return "DW_AT_segment"; | |
4100 | case DW_AT_specification: | |
4101 | return "DW_AT_specification"; | |
4102 | case DW_AT_static_link: | |
4103 | return "DW_AT_static_link"; | |
4104 | case DW_AT_type: | |
4105 | return "DW_AT_type"; | |
4106 | case DW_AT_use_location: | |
4107 | return "DW_AT_use_location"; | |
4108 | case DW_AT_variable_parameter: | |
4109 | return "DW_AT_variable_parameter"; | |
4110 | case DW_AT_virtuality: | |
4111 | return "DW_AT_virtuality"; | |
4112 | case DW_AT_vtable_elem_location: | |
4113 | return "DW_AT_vtable_elem_location"; | |
4114 | ||
a20612aa RH |
4115 | case DW_AT_allocated: |
4116 | return "DW_AT_allocated"; | |
4117 | case DW_AT_associated: | |
4118 | return "DW_AT_associated"; | |
4119 | case DW_AT_data_location: | |
4120 | return "DW_AT_data_location"; | |
4121 | case DW_AT_stride: | |
4122 | return "DW_AT_stride"; | |
4123 | case DW_AT_entry_pc: | |
4124 | return "DW_AT_entry_pc"; | |
4125 | case DW_AT_use_UTF8: | |
4126 | return "DW_AT_use_UTF8"; | |
4127 | case DW_AT_extension: | |
4128 | return "DW_AT_extension"; | |
4129 | case DW_AT_ranges: | |
4130 | return "DW_AT_ranges"; | |
4131 | case DW_AT_trampoline: | |
4132 | return "DW_AT_trampoline"; | |
4133 | case DW_AT_call_column: | |
4134 | return "DW_AT_call_column"; | |
4135 | case DW_AT_call_file: | |
4136 | return "DW_AT_call_file"; | |
4137 | case DW_AT_call_line: | |
4138 | return "DW_AT_call_line"; | |
4139 | ||
7d9d8943 AM |
4140 | case DW_AT_MIPS_fde: |
4141 | return "DW_AT_MIPS_fde"; | |
4142 | case DW_AT_MIPS_loop_begin: | |
4143 | return "DW_AT_MIPS_loop_begin"; | |
4144 | case DW_AT_MIPS_tail_loop_begin: | |
4145 | return "DW_AT_MIPS_tail_loop_begin"; | |
4146 | case DW_AT_MIPS_epilog_begin: | |
4147 | return "DW_AT_MIPS_epilog_begin"; | |
4148 | case DW_AT_MIPS_loop_unroll_factor: | |
4149 | return "DW_AT_MIPS_loop_unroll_factor"; | |
4150 | case DW_AT_MIPS_software_pipeline_depth: | |
4151 | return "DW_AT_MIPS_software_pipeline_depth"; | |
4152 | case DW_AT_MIPS_linkage_name: | |
4153 | return "DW_AT_MIPS_linkage_name"; | |
4154 | case DW_AT_MIPS_stride: | |
4155 | return "DW_AT_MIPS_stride"; | |
4156 | case DW_AT_MIPS_abstract_name: | |
4157 | return "DW_AT_MIPS_abstract_name"; | |
4158 | case DW_AT_MIPS_clone_origin: | |
4159 | return "DW_AT_MIPS_clone_origin"; | |
4160 | case DW_AT_MIPS_has_inlines: | |
4161 | return "DW_AT_MIPS_has_inlines"; | |
4162 | ||
4163 | case DW_AT_sf_names: | |
4164 | return "DW_AT_sf_names"; | |
4165 | case DW_AT_src_info: | |
4166 | return "DW_AT_src_info"; | |
4167 | case DW_AT_mac_info: | |
4168 | return "DW_AT_mac_info"; | |
4169 | case DW_AT_src_coords: | |
4170 | return "DW_AT_src_coords"; | |
4171 | case DW_AT_body_begin: | |
4172 | return "DW_AT_body_begin"; | |
4173 | case DW_AT_body_end: | |
4174 | return "DW_AT_body_end"; | |
84f0ace0 JM |
4175 | case DW_AT_GNU_vector: |
4176 | return "DW_AT_GNU_vector"; | |
4177 | ||
7a0c8d71 DR |
4178 | case DW_AT_VMS_rtnbeg_pd_address: |
4179 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
4180 | ||
7d9d8943 AM |
4181 | default: |
4182 | return "DW_AT_<unknown>"; | |
4183 | } | |
4184 | } | |
4185 | ||
4186 | /* Convert a DWARF value form code into its string name. */ | |
4187 | ||
4188 | static const char * | |
4189 | dwarf_form_name (form) | |
b3694847 | 4190 | unsigned form; |
7d9d8943 AM |
4191 | { |
4192 | switch (form) | |
4193 | { | |
4194 | case DW_FORM_addr: | |
4195 | return "DW_FORM_addr"; | |
4196 | case DW_FORM_block2: | |
4197 | return "DW_FORM_block2"; | |
4198 | case DW_FORM_block4: | |
4199 | return "DW_FORM_block4"; | |
4200 | case DW_FORM_data2: | |
4201 | return "DW_FORM_data2"; | |
4202 | case DW_FORM_data4: | |
4203 | return "DW_FORM_data4"; | |
4204 | case DW_FORM_data8: | |
4205 | return "DW_FORM_data8"; | |
4206 | case DW_FORM_string: | |
4207 | return "DW_FORM_string"; | |
4208 | case DW_FORM_block: | |
4209 | return "DW_FORM_block"; | |
4210 | case DW_FORM_block1: | |
4211 | return "DW_FORM_block1"; | |
4212 | case DW_FORM_data1: | |
4213 | return "DW_FORM_data1"; | |
4214 | case DW_FORM_flag: | |
4215 | return "DW_FORM_flag"; | |
4216 | case DW_FORM_sdata: | |
4217 | return "DW_FORM_sdata"; | |
4218 | case DW_FORM_strp: | |
4219 | return "DW_FORM_strp"; | |
4220 | case DW_FORM_udata: | |
4221 | return "DW_FORM_udata"; | |
4222 | case DW_FORM_ref_addr: | |
4223 | return "DW_FORM_ref_addr"; | |
4224 | case DW_FORM_ref1: | |
4225 | return "DW_FORM_ref1"; | |
4226 | case DW_FORM_ref2: | |
4227 | return "DW_FORM_ref2"; | |
4228 | case DW_FORM_ref4: | |
4229 | return "DW_FORM_ref4"; | |
4230 | case DW_FORM_ref8: | |
4231 | return "DW_FORM_ref8"; | |
4232 | case DW_FORM_ref_udata: | |
4233 | return "DW_FORM_ref_udata"; | |
4234 | case DW_FORM_indirect: | |
4235 | return "DW_FORM_indirect"; | |
3f76745e | 4236 | default: |
7d9d8943 | 4237 | return "DW_FORM_<unknown>"; |
a3f97cbb JW |
4238 | } |
4239 | } | |
4240 | ||
3f76745e | 4241 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 4242 | |
487a6e06 | 4243 | #if 0 |
d560ee52 | 4244 | static const char * |
3f76745e | 4245 | dwarf_type_encoding_name (enc) |
b3694847 | 4246 | unsigned enc; |
a3f97cbb | 4247 | { |
3f76745e | 4248 | switch (enc) |
a3f97cbb | 4249 | { |
3f76745e JM |
4250 | case DW_ATE_address: |
4251 | return "DW_ATE_address"; | |
4252 | case DW_ATE_boolean: | |
4253 | return "DW_ATE_boolean"; | |
4254 | case DW_ATE_complex_float: | |
4255 | return "DW_ATE_complex_float"; | |
4256 | case DW_ATE_float: | |
4257 | return "DW_ATE_float"; | |
4258 | case DW_ATE_signed: | |
4259 | return "DW_ATE_signed"; | |
4260 | case DW_ATE_signed_char: | |
4261 | return "DW_ATE_signed_char"; | |
4262 | case DW_ATE_unsigned: | |
4263 | return "DW_ATE_unsigned"; | |
4264 | case DW_ATE_unsigned_char: | |
4265 | return "DW_ATE_unsigned_char"; | |
4266 | default: | |
4267 | return "DW_ATE_<unknown>"; | |
4268 | } | |
a3f97cbb | 4269 | } |
487a6e06 | 4270 | #endif |
3f76745e JM |
4271 | \f |
4272 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
4273 | instance of an inlined instance of a decl which is local to an inline | |
4274 | function, so we have to trace all of the way back through the origin chain | |
4275 | to find out what sort of node actually served as the original seed for the | |
4276 | given block. */ | |
a3f97cbb | 4277 | |
3f76745e JM |
4278 | static tree |
4279 | decl_ultimate_origin (decl) | |
b3694847 | 4280 | tree decl; |
a3f97cbb | 4281 | { |
10a11b75 JM |
4282 | /* output_inline_function sets DECL_ABSTRACT_ORIGIN for all the |
4283 | nodes in the function to point to themselves; ignore that if | |
4284 | we're trying to output the abstract instance of this function. */ | |
4285 | if (DECL_ABSTRACT (decl) && DECL_ABSTRACT_ORIGIN (decl) == decl) | |
4286 | return NULL_TREE; | |
4287 | ||
556273e0 | 4288 | #ifdef ENABLE_CHECKING |
02e24c7a MM |
4289 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) |
4290 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
4291 | most distant ancestor, this should never happen. */ | |
4292 | abort (); | |
4293 | #endif | |
3f76745e | 4294 | |
02e24c7a | 4295 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
4296 | } |
4297 | ||
3f76745e JM |
4298 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
4299 | instance of an inlined instance of a block which is local to an inline | |
4300 | function, so we have to trace all of the way back through the origin chain | |
4301 | to find out what sort of node actually served as the original seed for the | |
4302 | given block. */ | |
71dfc51f | 4303 | |
3f76745e JM |
4304 | static tree |
4305 | block_ultimate_origin (block) | |
b3694847 | 4306 | tree block; |
a3f97cbb | 4307 | { |
b3694847 | 4308 | tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 4309 | |
10a11b75 JM |
4310 | /* output_inline_function sets BLOCK_ABSTRACT_ORIGIN for all the |
4311 | nodes in the function to point to themselves; ignore that if | |
4312 | we're trying to output the abstract instance of this function. */ | |
4313 | if (BLOCK_ABSTRACT (block) && immediate_origin == block) | |
4314 | return NULL_TREE; | |
4315 | ||
3f76745e JM |
4316 | if (immediate_origin == NULL_TREE) |
4317 | return NULL_TREE; | |
4318 | else | |
4319 | { | |
b3694847 SS |
4320 | tree ret_val; |
4321 | tree lookahead = immediate_origin; | |
71dfc51f | 4322 | |
3f76745e JM |
4323 | do |
4324 | { | |
4325 | ret_val = lookahead; | |
2ad9852d RK |
4326 | lookahead = (TREE_CODE (ret_val) == BLOCK |
4327 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) : NULL); | |
3f76745e JM |
4328 | } |
4329 | while (lookahead != NULL && lookahead != ret_val); | |
4330 | ||
4331 | return ret_val; | |
4332 | } | |
a3f97cbb JW |
4333 | } |
4334 | ||
3f76745e JM |
4335 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
4336 | of a virtual function may refer to a base class, so we check the 'this' | |
4337 | parameter. */ | |
71dfc51f | 4338 | |
3f76745e JM |
4339 | static tree |
4340 | decl_class_context (decl) | |
4341 | tree decl; | |
a3f97cbb | 4342 | { |
3f76745e | 4343 | tree context = NULL_TREE; |
71dfc51f | 4344 | |
3f76745e JM |
4345 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
4346 | context = DECL_CONTEXT (decl); | |
4347 | else | |
4348 | context = TYPE_MAIN_VARIANT | |
4349 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 4350 | |
2f939d94 | 4351 | if (context && !TYPE_P (context)) |
3f76745e JM |
4352 | context = NULL_TREE; |
4353 | ||
4354 | return context; | |
a3f97cbb JW |
4355 | } |
4356 | \f | |
a96c67ec | 4357 | /* Add an attribute/value pair to a DIE. We build the lists up in reverse |
881c6935 | 4358 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f RK |
4359 | |
4360 | static inline void | |
3f76745e | 4361 | add_dwarf_attr (die, attr) |
b3694847 SS |
4362 | dw_die_ref die; |
4363 | dw_attr_ref attr; | |
a3f97cbb | 4364 | { |
3f76745e | 4365 | if (die != NULL && attr != NULL) |
a3f97cbb | 4366 | { |
a96c67ec JM |
4367 | attr->dw_attr_next = die->die_attr; |
4368 | die->die_attr = attr; | |
a3f97cbb JW |
4369 | } |
4370 | } | |
4371 | ||
a96c67ec JM |
4372 | static inline dw_val_class |
4373 | AT_class (a) | |
4374 | dw_attr_ref a; | |
4375 | { | |
4376 | return a->dw_attr_val.val_class; | |
4377 | } | |
4378 | ||
3f76745e | 4379 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 4380 | |
3f76745e JM |
4381 | static inline void |
4382 | add_AT_flag (die, attr_kind, flag) | |
b3694847 SS |
4383 | dw_die_ref die; |
4384 | enum dwarf_attribute attr_kind; | |
4385 | unsigned flag; | |
a3f97cbb | 4386 | { |
b3694847 | 4387 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4388 | |
3f76745e JM |
4389 | attr->dw_attr_next = NULL; |
4390 | attr->dw_attr = attr_kind; | |
4391 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
4392 | attr->dw_attr_val.v.val_flag = flag; | |
4393 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4394 | } |
4395 | ||
a96c67ec JM |
4396 | static inline unsigned |
4397 | AT_flag (a) | |
b3694847 | 4398 | dw_attr_ref a; |
a96c67ec JM |
4399 | { |
4400 | if (a && AT_class (a) == dw_val_class_flag) | |
4401 | return a->dw_attr_val.v.val_flag; | |
4402 | ||
40e8cc95 | 4403 | abort (); |
a96c67ec JM |
4404 | } |
4405 | ||
3f76745e | 4406 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 4407 | |
3f76745e JM |
4408 | static inline void |
4409 | add_AT_int (die, attr_kind, int_val) | |
b3694847 SS |
4410 | dw_die_ref die; |
4411 | enum dwarf_attribute attr_kind; | |
4412 | long int int_val; | |
a3f97cbb | 4413 | { |
b3694847 | 4414 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3f76745e JM |
4415 | |
4416 | attr->dw_attr_next = NULL; | |
4417 | attr->dw_attr = attr_kind; | |
4418 | attr->dw_attr_val.val_class = dw_val_class_const; | |
4419 | attr->dw_attr_val.v.val_int = int_val; | |
4420 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4421 | } |
4422 | ||
a96c67ec JM |
4423 | static inline long int |
4424 | AT_int (a) | |
b3694847 | 4425 | dw_attr_ref a; |
a96c67ec JM |
4426 | { |
4427 | if (a && AT_class (a) == dw_val_class_const) | |
4428 | return a->dw_attr_val.v.val_int; | |
4429 | ||
40e8cc95 | 4430 | abort (); |
a96c67ec JM |
4431 | } |
4432 | ||
3f76745e | 4433 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 4434 | |
3f76745e JM |
4435 | static inline void |
4436 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
b3694847 SS |
4437 | dw_die_ref die; |
4438 | enum dwarf_attribute attr_kind; | |
4439 | unsigned long unsigned_val; | |
a3f97cbb | 4440 | { |
b3694847 | 4441 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3f76745e JM |
4442 | |
4443 | attr->dw_attr_next = NULL; | |
4444 | attr->dw_attr = attr_kind; | |
4445 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
4446 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
4447 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4448 | } |
71dfc51f | 4449 | |
a96c67ec JM |
4450 | static inline unsigned long |
4451 | AT_unsigned (a) | |
b3694847 | 4452 | dw_attr_ref a; |
a96c67ec JM |
4453 | { |
4454 | if (a && AT_class (a) == dw_val_class_unsigned_const) | |
4455 | return a->dw_attr_val.v.val_unsigned; | |
4456 | ||
40e8cc95 | 4457 | abort (); |
a96c67ec JM |
4458 | } |
4459 | ||
3f76745e JM |
4460 | /* Add an unsigned double integer attribute value to a DIE. */ |
4461 | ||
4462 | static inline void | |
4463 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
b3694847 SS |
4464 | dw_die_ref die; |
4465 | enum dwarf_attribute attr_kind; | |
4466 | unsigned long val_hi; | |
4467 | unsigned long val_low; | |
a3f97cbb | 4468 | { |
b3694847 | 4469 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4470 | |
3f76745e JM |
4471 | attr->dw_attr_next = NULL; |
4472 | attr->dw_attr = attr_kind; | |
4473 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
4474 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
4475 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
4476 | add_dwarf_attr (die, attr); | |
4477 | } | |
71dfc51f | 4478 | |
3f76745e | 4479 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 4480 | |
3f76745e JM |
4481 | static inline void |
4482 | add_AT_float (die, attr_kind, length, array) | |
b3694847 SS |
4483 | dw_die_ref die; |
4484 | enum dwarf_attribute attr_kind; | |
4485 | unsigned length; | |
4486 | long *array; | |
3f76745e | 4487 | { |
b3694847 | 4488 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3f76745e JM |
4489 | |
4490 | attr->dw_attr_next = NULL; | |
4491 | attr->dw_attr = attr_kind; | |
4492 | attr->dw_attr_val.val_class = dw_val_class_float; | |
4493 | attr->dw_attr_val.v.val_float.length = length; | |
4494 | attr->dw_attr_val.v.val_float.array = array; | |
4495 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4496 | } |
4497 | ||
3f76745e | 4498 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 4499 | |
3f76745e JM |
4500 | static inline void |
4501 | add_AT_string (die, attr_kind, str) | |
b3694847 SS |
4502 | dw_die_ref die; |
4503 | enum dwarf_attribute attr_kind; | |
4504 | const char *str; | |
a3f97cbb | 4505 | { |
b3694847 | 4506 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
9eb4015a | 4507 | struct indirect_string_node *node; |
c26fbbca | 4508 | |
9eb4015a JJ |
4509 | if (! debug_str_hash) |
4510 | { | |
4511 | debug_str_hash = ht_create (10); | |
4512 | debug_str_hash->alloc_node = indirect_string_alloc; | |
4513 | } | |
4514 | ||
4515 | node = (struct indirect_string_node *) | |
4516 | ht_lookup (debug_str_hash, (const unsigned char *) str, | |
4517 | strlen (str), HT_ALLOC); | |
4518 | node->refcount++; | |
71dfc51f | 4519 | |
3f76745e JM |
4520 | attr->dw_attr_next = NULL; |
4521 | attr->dw_attr = attr_kind; | |
4522 | attr->dw_attr_val.val_class = dw_val_class_str; | |
9eb4015a | 4523 | attr->dw_attr_val.v.val_str = node; |
3f76745e JM |
4524 | add_dwarf_attr (die, attr); |
4525 | } | |
71dfc51f | 4526 | |
a96c67ec JM |
4527 | static inline const char * |
4528 | AT_string (a) | |
b3694847 | 4529 | dw_attr_ref a; |
a96c67ec JM |
4530 | { |
4531 | if (a && AT_class (a) == dw_val_class_str) | |
9eb4015a JJ |
4532 | return (const char *) HT_STR (&a->dw_attr_val.v.val_str->id); |
4533 | ||
4534 | abort (); | |
4535 | } | |
4536 | ||
4537 | /* Find out whether a string should be output inline in DIE | |
4538 | or out-of-line in .debug_str section. */ | |
4539 | ||
9eb4015a JJ |
4540 | static int |
4541 | AT_string_form (a) | |
4542 | dw_attr_ref a; | |
4543 | { | |
4544 | if (a && AT_class (a) == dw_val_class_str) | |
4545 | { | |
4546 | struct indirect_string_node *node; | |
4547 | unsigned int len; | |
4548 | extern int const_labelno; | |
4549 | char label[32]; | |
4550 | ||
4551 | node = a->dw_attr_val.v.val_str; | |
4552 | if (node->form) | |
4553 | return node->form; | |
4554 | ||
4555 | len = HT_LEN (&node->id) + 1; | |
4556 | ||
2ad9852d RK |
4557 | /* If the string is shorter or equal to the size of the reference, it is |
4558 | always better to put it inline. */ | |
9eb4015a JJ |
4559 | if (len <= DWARF_OFFSET_SIZE || node->refcount == 0) |
4560 | return node->form = DW_FORM_string; | |
4561 | ||
2ad9852d RK |
4562 | /* If we cannot expect the linker to merge strings in .debug_str |
4563 | section, only put it into .debug_str if it is worth even in this | |
4564 | single module. */ | |
4565 | if ((DEBUG_STR_SECTION_FLAGS & SECTION_MERGE) == 0 | |
4566 | && (len - DWARF_OFFSET_SIZE) * node->refcount <= len) | |
4567 | return node->form = DW_FORM_string; | |
9eb4015a JJ |
4568 | |
4569 | ASM_GENERATE_INTERNAL_LABEL (label, "LC", const_labelno); | |
4570 | ++const_labelno; | |
4571 | node->label = xstrdup (label); | |
2ad9852d | 4572 | |
9eb4015a JJ |
4573 | return node->form = DW_FORM_strp; |
4574 | } | |
a96c67ec | 4575 | |
40e8cc95 | 4576 | abort (); |
a96c67ec JM |
4577 | } |
4578 | ||
3f76745e | 4579 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 4580 | |
3f76745e JM |
4581 | static inline void |
4582 | add_AT_die_ref (die, attr_kind, targ_die) | |
b3694847 SS |
4583 | dw_die_ref die; |
4584 | enum dwarf_attribute attr_kind; | |
4585 | dw_die_ref targ_die; | |
3f76745e | 4586 | { |
b3694847 | 4587 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4588 | |
3f76745e JM |
4589 | attr->dw_attr_next = NULL; |
4590 | attr->dw_attr = attr_kind; | |
4591 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
881c6935 JM |
4592 | attr->dw_attr_val.v.val_die_ref.die = targ_die; |
4593 | attr->dw_attr_val.v.val_die_ref.external = 0; | |
3f76745e JM |
4594 | add_dwarf_attr (die, attr); |
4595 | } | |
b1ccbc24 | 4596 | |
a96c67ec JM |
4597 | static inline dw_die_ref |
4598 | AT_ref (a) | |
b3694847 | 4599 | dw_attr_ref a; |
a96c67ec JM |
4600 | { |
4601 | if (a && AT_class (a) == dw_val_class_die_ref) | |
881c6935 | 4602 | return a->dw_attr_val.v.val_die_ref.die; |
a96c67ec | 4603 | |
40e8cc95 | 4604 | abort (); |
a96c67ec JM |
4605 | } |
4606 | ||
881c6935 JM |
4607 | static inline int |
4608 | AT_ref_external (a) | |
b3694847 | 4609 | dw_attr_ref a; |
881c6935 JM |
4610 | { |
4611 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4612 | return a->dw_attr_val.v.val_die_ref.external; | |
4613 | ||
4614 | return 0; | |
4615 | } | |
4616 | ||
881c6935 JM |
4617 | static inline void |
4618 | set_AT_ref_external (a, i) | |
b3694847 | 4619 | dw_attr_ref a; |
881c6935 JM |
4620 | int i; |
4621 | { | |
4622 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4623 | a->dw_attr_val.v.val_die_ref.external = i; | |
4624 | else | |
4625 | abort (); | |
4626 | } | |
4627 | ||
3f76745e | 4628 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 4629 | |
3f76745e JM |
4630 | static inline void |
4631 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
b3694847 SS |
4632 | dw_die_ref die; |
4633 | enum dwarf_attribute attr_kind; | |
4634 | unsigned targ_fde; | |
3f76745e | 4635 | { |
b3694847 | 4636 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
b1ccbc24 | 4637 | |
3f76745e JM |
4638 | attr->dw_attr_next = NULL; |
4639 | attr->dw_attr = attr_kind; | |
4640 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
4641 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
4642 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4643 | } |
71dfc51f | 4644 | |
3f76745e | 4645 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 4646 | |
3f76745e JM |
4647 | static inline void |
4648 | add_AT_loc (die, attr_kind, loc) | |
b3694847 SS |
4649 | dw_die_ref die; |
4650 | enum dwarf_attribute attr_kind; | |
4651 | dw_loc_descr_ref loc; | |
3f76745e | 4652 | { |
b3694847 | 4653 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4654 | |
3f76745e JM |
4655 | attr->dw_attr_next = NULL; |
4656 | attr->dw_attr = attr_kind; | |
4657 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
4658 | attr->dw_attr_val.v.val_loc = loc; | |
4659 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4660 | } |
4661 | ||
a96c67ec JM |
4662 | static inline dw_loc_descr_ref |
4663 | AT_loc (a) | |
b3694847 | 4664 | dw_attr_ref a; |
a96c67ec JM |
4665 | { |
4666 | if (a && AT_class (a) == dw_val_class_loc) | |
4667 | return a->dw_attr_val.v.val_loc; | |
4668 | ||
40e8cc95 | 4669 | abort (); |
a96c67ec JM |
4670 | } |
4671 | ||
63e46568 DB |
4672 | static inline void |
4673 | add_AT_loc_list (die, attr_kind, loc_list) | |
b3694847 SS |
4674 | dw_die_ref die; |
4675 | enum dwarf_attribute attr_kind; | |
4676 | dw_loc_list_ref loc_list; | |
63e46568 | 4677 | { |
b3694847 | 4678 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
63e46568 DB |
4679 | |
4680 | attr->dw_attr_next = NULL; | |
4681 | attr->dw_attr = attr_kind; | |
4682 | attr->dw_attr_val.val_class = dw_val_class_loc_list; | |
4683 | attr->dw_attr_val.v.val_loc_list = loc_list; | |
4684 | add_dwarf_attr (die, attr); | |
4685 | have_location_lists = 1; | |
4686 | } | |
4687 | ||
63e46568 DB |
4688 | static inline dw_loc_list_ref |
4689 | AT_loc_list (a) | |
b3694847 | 4690 | dw_attr_ref a; |
63e46568 DB |
4691 | { |
4692 | if (a && AT_class (a) == dw_val_class_loc_list) | |
4693 | return a->dw_attr_val.v.val_loc_list; | |
4694 | ||
4695 | abort (); | |
4696 | } | |
4697 | ||
3f76745e | 4698 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 4699 | |
3f76745e JM |
4700 | static inline void |
4701 | add_AT_addr (die, attr_kind, addr) | |
b3694847 SS |
4702 | dw_die_ref die; |
4703 | enum dwarf_attribute attr_kind; | |
1865dbb5 | 4704 | rtx addr; |
a3f97cbb | 4705 | { |
b3694847 | 4706 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4707 | |
3f76745e JM |
4708 | attr->dw_attr_next = NULL; |
4709 | attr->dw_attr = attr_kind; | |
4710 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
4711 | attr->dw_attr_val.v.val_addr = addr; | |
4712 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4713 | } |
4714 | ||
1865dbb5 | 4715 | static inline rtx |
a96c67ec | 4716 | AT_addr (a) |
b3694847 | 4717 | dw_attr_ref a; |
a96c67ec JM |
4718 | { |
4719 | if (a && AT_class (a) == dw_val_class_addr) | |
4720 | return a->dw_attr_val.v.val_addr; | |
4721 | ||
40e8cc95 | 4722 | abort (); |
a96c67ec JM |
4723 | } |
4724 | ||
3f76745e | 4725 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 4726 | |
3f76745e JM |
4727 | static inline void |
4728 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
b3694847 SS |
4729 | dw_die_ref die; |
4730 | enum dwarf_attribute attr_kind; | |
4731 | const char *lbl_id; | |
a3f97cbb | 4732 | { |
b3694847 | 4733 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4734 | |
3f76745e JM |
4735 | attr->dw_attr_next = NULL; |
4736 | attr->dw_attr = attr_kind; | |
4737 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
4738 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
4739 | add_dwarf_attr (die, attr); | |
4740 | } | |
71dfc51f | 4741 | |
3f76745e JM |
4742 | /* Add a section offset attribute value to a DIE. */ |
4743 | ||
4744 | static inline void | |
8b790721 | 4745 | add_AT_lbl_offset (die, attr_kind, label) |
b3694847 SS |
4746 | dw_die_ref die; |
4747 | enum dwarf_attribute attr_kind; | |
4748 | const char *label; | |
3f76745e | 4749 | { |
b3694847 | 4750 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4751 | |
3f76745e JM |
4752 | attr->dw_attr_next = NULL; |
4753 | attr->dw_attr = attr_kind; | |
8b790721 | 4754 | attr->dw_attr_val.val_class = dw_val_class_lbl_offset; |
a96c67ec | 4755 | attr->dw_attr_val.v.val_lbl_id = xstrdup (label); |
3f76745e | 4756 | add_dwarf_attr (die, attr); |
a3f97cbb JW |
4757 | } |
4758 | ||
a20612aa RH |
4759 | /* Add an offset attribute value to a DIE. */ |
4760 | ||
2bee6045 | 4761 | static inline void |
a20612aa | 4762 | add_AT_offset (die, attr_kind, offset) |
b3694847 SS |
4763 | dw_die_ref die; |
4764 | enum dwarf_attribute attr_kind; | |
4765 | unsigned long offset; | |
a20612aa | 4766 | { |
b3694847 | 4767 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
a20612aa RH |
4768 | |
4769 | attr->dw_attr_next = NULL; | |
4770 | attr->dw_attr = attr_kind; | |
4771 | attr->dw_attr_val.val_class = dw_val_class_offset; | |
4772 | attr->dw_attr_val.v.val_offset = offset; | |
4773 | add_dwarf_attr (die, attr); | |
4774 | } | |
4775 | ||
2bee6045 JJ |
4776 | /* Add an range_list attribute value to a DIE. */ |
4777 | ||
4778 | static void | |
4779 | add_AT_range_list (die, attr_kind, offset) | |
4780 | dw_die_ref die; | |
4781 | enum dwarf_attribute attr_kind; | |
4782 | unsigned long offset; | |
4783 | { | |
4784 | dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
4785 | ||
4786 | attr->dw_attr_next = NULL; | |
4787 | attr->dw_attr = attr_kind; | |
4788 | attr->dw_attr_val.val_class = dw_val_class_range_list; | |
4789 | attr->dw_attr_val.v.val_offset = offset; | |
4790 | add_dwarf_attr (die, attr); | |
4791 | } | |
4792 | ||
a96c67ec JM |
4793 | static inline const char * |
4794 | AT_lbl (a) | |
b3694847 | 4795 | dw_attr_ref a; |
a3f97cbb | 4796 | { |
a96c67ec JM |
4797 | if (a && (AT_class (a) == dw_val_class_lbl_id |
4798 | || AT_class (a) == dw_val_class_lbl_offset)) | |
4799 | return a->dw_attr_val.v.val_lbl_id; | |
71dfc51f | 4800 | |
40e8cc95 | 4801 | abort (); |
a3f97cbb JW |
4802 | } |
4803 | ||
3f76745e | 4804 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 4805 | |
3f76745e JM |
4806 | static inline dw_attr_ref |
4807 | get_AT (die, attr_kind) | |
b3694847 SS |
4808 | dw_die_ref die; |
4809 | enum dwarf_attribute attr_kind; | |
f37230f0 | 4810 | { |
b3694847 SS |
4811 | dw_attr_ref a; |
4812 | dw_die_ref spec = NULL; | |
556273e0 | 4813 | |
3f76745e JM |
4814 | if (die != NULL) |
4815 | { | |
4816 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
2ad9852d RK |
4817 | if (a->dw_attr == attr_kind) |
4818 | return a; | |
4819 | else if (a->dw_attr == DW_AT_specification | |
4820 | || a->dw_attr == DW_AT_abstract_origin) | |
4821 | spec = AT_ref (a); | |
71dfc51f | 4822 | |
3f76745e JM |
4823 | if (spec) |
4824 | return get_AT (spec, attr_kind); | |
4825 | } | |
4826 | ||
4827 | return NULL; | |
f37230f0 JM |
4828 | } |
4829 | ||
2ad9852d RK |
4830 | /* Return the "low pc" attribute value, typically associated with a subprogram |
4831 | DIE. Return null if the "low pc" attribute is either not present, or if it | |
4832 | cannot be represented as an assembler label identifier. */ | |
71dfc51f | 4833 | |
a96c67ec | 4834 | static inline const char * |
3f76745e | 4835 | get_AT_low_pc (die) |
b3694847 | 4836 | dw_die_ref die; |
7e23cb16 | 4837 | { |
b3694847 | 4838 | dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
2ad9852d | 4839 | |
40e8cc95 | 4840 | return a ? AT_lbl (a) : NULL; |
7e23cb16 JM |
4841 | } |
4842 | ||
2ad9852d RK |
4843 | /* Return the "high pc" attribute value, typically associated with a subprogram |
4844 | DIE. Return null if the "high pc" attribute is either not present, or if it | |
4845 | cannot be represented as an assembler label identifier. */ | |
71dfc51f | 4846 | |
a96c67ec | 4847 | static inline const char * |
3f76745e | 4848 | get_AT_hi_pc (die) |
b3694847 | 4849 | dw_die_ref die; |
a3f97cbb | 4850 | { |
b3694847 | 4851 | dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
2ad9852d | 4852 | |
40e8cc95 | 4853 | return a ? AT_lbl (a) : NULL; |
3f76745e JM |
4854 | } |
4855 | ||
4856 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
4857 | NULL if it is not present. */ | |
71dfc51f | 4858 | |
a96c67ec | 4859 | static inline const char * |
3f76745e | 4860 | get_AT_string (die, attr_kind) |
b3694847 SS |
4861 | dw_die_ref die; |
4862 | enum dwarf_attribute attr_kind; | |
3f76745e | 4863 | { |
b3694847 | 4864 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4865 | |
40e8cc95 | 4866 | return a ? AT_string (a) : NULL; |
a3f97cbb JW |
4867 | } |
4868 | ||
3f76745e JM |
4869 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
4870 | if it is not present. */ | |
71dfc51f | 4871 | |
3f76745e JM |
4872 | static inline int |
4873 | get_AT_flag (die, attr_kind) | |
b3694847 SS |
4874 | dw_die_ref die; |
4875 | enum dwarf_attribute attr_kind; | |
a3f97cbb | 4876 | { |
b3694847 | 4877 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4878 | |
40e8cc95 | 4879 | return a ? AT_flag (a) : 0; |
a3f97cbb JW |
4880 | } |
4881 | ||
3f76745e JM |
4882 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
4883 | if it is not present. */ | |
71dfc51f | 4884 | |
3f76745e JM |
4885 | static inline unsigned |
4886 | get_AT_unsigned (die, attr_kind) | |
b3694847 SS |
4887 | dw_die_ref die; |
4888 | enum dwarf_attribute attr_kind; | |
a3f97cbb | 4889 | { |
b3694847 | 4890 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4891 | |
40e8cc95 | 4892 | return a ? AT_unsigned (a) : 0; |
a96c67ec | 4893 | } |
71dfc51f | 4894 | |
a96c67ec JM |
4895 | static inline dw_die_ref |
4896 | get_AT_ref (die, attr_kind) | |
4897 | dw_die_ref die; | |
b3694847 | 4898 | enum dwarf_attribute attr_kind; |
a96c67ec | 4899 | { |
b3694847 | 4900 | dw_attr_ref a = get_AT (die, attr_kind); |
2ad9852d | 4901 | |
40e8cc95 | 4902 | return a ? AT_ref (a) : NULL; |
3f76745e | 4903 | } |
71dfc51f | 4904 | |
3f76745e JM |
4905 | static inline int |
4906 | is_c_family () | |
4907 | { | |
b3694847 | 4908 | unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); |
71dfc51f | 4909 | |
3f76745e JM |
4910 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
4911 | || lang == DW_LANG_C_plus_plus); | |
556273e0 | 4912 | } |
71dfc51f | 4913 | |
1d3d6b1e JM |
4914 | static inline int |
4915 | is_cxx () | |
4916 | { | |
4917 | return (get_AT_unsigned (comp_unit_die, DW_AT_language) | |
4918 | == DW_LANG_C_plus_plus); | |
c26fbbca | 4919 | } |
1d3d6b1e | 4920 | |
3f76745e JM |
4921 | static inline int |
4922 | is_fortran () | |
4923 | { | |
b3694847 | 4924 | unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); |
71dfc51f | 4925 | |
3f76745e | 4926 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
556273e0 | 4927 | } |
71dfc51f | 4928 | |
28985b81 AG |
4929 | static inline int |
4930 | is_java () | |
4931 | { | |
b3694847 | 4932 | unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); |
28985b81 AG |
4933 | |
4934 | return (lang == DW_LANG_Java); | |
4935 | } | |
4936 | ||
10a11b75 | 4937 | /* Free up the memory used by A. */ |
71dfc51f | 4938 | |
c6991660 | 4939 | static inline void free_AT PARAMS ((dw_attr_ref)); |
3f76745e | 4940 | static inline void |
10a11b75 JM |
4941 | free_AT (a) |
4942 | dw_attr_ref a; | |
4943 | { | |
4944 | switch (AT_class (a)) | |
4945 | { | |
10a11b75 | 4946 | case dw_val_class_str: |
9eb4015a JJ |
4947 | if (a->dw_attr_val.v.val_str->refcount) |
4948 | a->dw_attr_val.v.val_str->refcount--; | |
4949 | break; | |
4950 | ||
10a11b75 JM |
4951 | case dw_val_class_lbl_id: |
4952 | case dw_val_class_lbl_offset: | |
9eb4015a | 4953 | free (a->dw_attr_val.v.val_lbl_id); |
10a11b75 JM |
4954 | break; |
4955 | ||
3724ec07 WC |
4956 | case dw_val_class_float: |
4957 | free (a->dw_attr_val.v.val_float.array); | |
4958 | break; | |
0b34cf1e | 4959 | |
10a11b75 JM |
4960 | default: |
4961 | break; | |
4962 | } | |
4963 | ||
4964 | free (a); | |
556273e0 | 4965 | } |
10a11b75 JM |
4966 | |
4967 | /* Remove the specified attribute if present. */ | |
4968 | ||
4969 | static void | |
3f76745e | 4970 | remove_AT (die, attr_kind) |
b3694847 SS |
4971 | dw_die_ref die; |
4972 | enum dwarf_attribute attr_kind; | |
3f76745e | 4973 | { |
b3694847 SS |
4974 | dw_attr_ref *p; |
4975 | dw_attr_ref removed = NULL; | |
a3f97cbb | 4976 | |
3f76745e JM |
4977 | if (die != NULL) |
4978 | { | |
a96c67ec JM |
4979 | for (p = &(die->die_attr); *p; p = &((*p)->dw_attr_next)) |
4980 | if ((*p)->dw_attr == attr_kind) | |
4981 | { | |
4982 | removed = *p; | |
4983 | *p = (*p)->dw_attr_next; | |
4984 | break; | |
4985 | } | |
71dfc51f | 4986 | |
a96c67ec | 4987 | if (removed != 0) |
10a11b75 JM |
4988 | free_AT (removed); |
4989 | } | |
4990 | } | |
71dfc51f | 4991 | |
10a11b75 | 4992 | /* Free up the memory used by DIE. */ |
71dfc51f | 4993 | |
10a11b75 JM |
4994 | static inline void |
4995 | free_die (die) | |
4996 | dw_die_ref die; | |
4997 | { | |
4998 | remove_children (die); | |
4999 | free (die); | |
3f76745e | 5000 | } |
71dfc51f | 5001 | |
3f76745e | 5002 | /* Discard the children of this DIE. */ |
71dfc51f | 5003 | |
10a11b75 | 5004 | static void |
3f76745e | 5005 | remove_children (die) |
b3694847 | 5006 | dw_die_ref die; |
3f76745e | 5007 | { |
b3694847 | 5008 | dw_die_ref child_die = die->die_child; |
3f76745e JM |
5009 | |
5010 | die->die_child = NULL; | |
3f76745e JM |
5011 | |
5012 | while (child_die != NULL) | |
a3f97cbb | 5013 | { |
b3694847 SS |
5014 | dw_die_ref tmp_die = child_die; |
5015 | dw_attr_ref a; | |
71dfc51f | 5016 | |
3f76745e | 5017 | child_die = child_die->die_sib; |
556273e0 KH |
5018 | |
5019 | for (a = tmp_die->die_attr; a != NULL;) | |
a3f97cbb | 5020 | { |
b3694847 | 5021 | dw_attr_ref tmp_a = a; |
71dfc51f | 5022 | |
3f76745e | 5023 | a = a->dw_attr_next; |
10a11b75 | 5024 | free_AT (tmp_a); |
a3f97cbb | 5025 | } |
71dfc51f | 5026 | |
10a11b75 | 5027 | free_die (tmp_die); |
3f76745e JM |
5028 | } |
5029 | } | |
71dfc51f | 5030 | |
a96c67ec | 5031 | /* Add a child DIE below its parent. We build the lists up in reverse |
881c6935 | 5032 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f | 5033 | |
3f76745e JM |
5034 | static inline void |
5035 | add_child_die (die, child_die) | |
b3694847 SS |
5036 | dw_die_ref die; |
5037 | dw_die_ref child_die; | |
3f76745e JM |
5038 | { |
5039 | if (die != NULL && child_die != NULL) | |
e90b62db | 5040 | { |
3a88cbd1 JL |
5041 | if (die == child_die) |
5042 | abort (); | |
2ad9852d | 5043 | |
3f76745e | 5044 | child_die->die_parent = die; |
a96c67ec JM |
5045 | child_die->die_sib = die->die_child; |
5046 | die->die_child = child_die; | |
3f76745e JM |
5047 | } |
5048 | } | |
5049 | ||
2081603c JM |
5050 | /* Move CHILD, which must be a child of PARENT or the DIE for which PARENT |
5051 | is the specification, to the front of PARENT's list of children. */ | |
10a11b75 JM |
5052 | |
5053 | static void | |
5054 | splice_child_die (parent, child) | |
5055 | dw_die_ref parent, child; | |
5056 | { | |
5057 | dw_die_ref *p; | |
5058 | ||
5059 | /* We want the declaration DIE from inside the class, not the | |
5060 | specification DIE at toplevel. */ | |
5061 | if (child->die_parent != parent) | |
2081603c JM |
5062 | { |
5063 | dw_die_ref tmp = get_AT_ref (child, DW_AT_specification); | |
2ad9852d | 5064 | |
2081603c JM |
5065 | if (tmp) |
5066 | child = tmp; | |
5067 | } | |
10a11b75 | 5068 | |
2081603c JM |
5069 | if (child->die_parent != parent |
5070 | && child->die_parent != get_AT_ref (parent, DW_AT_specification)) | |
10a11b75 JM |
5071 | abort (); |
5072 | ||
5de0e8d4 | 5073 | for (p = &(child->die_parent->die_child); *p; p = &((*p)->die_sib)) |
10a11b75 JM |
5074 | if (*p == child) |
5075 | { | |
5076 | *p = child->die_sib; | |
5077 | break; | |
5078 | } | |
5079 | ||
5080 | child->die_sib = parent->die_child; | |
5081 | parent->die_child = child; | |
5082 | } | |
5083 | ||
3f76745e JM |
5084 | /* Return a pointer to a newly created DIE node. */ |
5085 | ||
5086 | static inline dw_die_ref | |
54ba1f0d | 5087 | new_die (tag_value, parent_die, t) |
b3694847 SS |
5088 | enum dwarf_tag tag_value; |
5089 | dw_die_ref parent_die; | |
54ba1f0d | 5090 | tree t; |
3f76745e | 5091 | { |
b3694847 | 5092 | dw_die_ref die = (dw_die_ref) xcalloc (1, sizeof (die_node)); |
3f76745e JM |
5093 | |
5094 | die->die_tag = tag_value; | |
3f76745e JM |
5095 | |
5096 | if (parent_die != NULL) | |
5097 | add_child_die (parent_die, die); | |
5098 | else | |
ef76d03b JW |
5099 | { |
5100 | limbo_die_node *limbo_node; | |
5101 | ||
5102 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
5103 | limbo_node->die = die; | |
54ba1f0d | 5104 | limbo_node->created_for = t; |
ef76d03b JW |
5105 | limbo_node->next = limbo_die_list; |
5106 | limbo_die_list = limbo_node; | |
5107 | } | |
71dfc51f | 5108 | |
3f76745e JM |
5109 | return die; |
5110 | } | |
71dfc51f | 5111 | |
3f76745e | 5112 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 5113 | |
3f76745e JM |
5114 | static inline dw_die_ref |
5115 | lookup_type_die (type) | |
b3694847 | 5116 | tree type; |
3f76745e | 5117 | { |
e2500fed | 5118 | return TYPE_SYMTAB_DIE (type); |
3f76745e | 5119 | } |
e90b62db | 5120 | |
3f76745e | 5121 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 5122 | |
10a11b75 | 5123 | static inline void |
3f76745e | 5124 | equate_type_number_to_die (type, type_die) |
b3694847 SS |
5125 | tree type; |
5126 | dw_die_ref type_die; | |
3f76745e | 5127 | { |
e2500fed | 5128 | TYPE_SYMTAB_DIE (type) = type_die; |
3f76745e | 5129 | } |
71dfc51f | 5130 | |
3f76745e | 5131 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 5132 | |
3f76745e JM |
5133 | static inline dw_die_ref |
5134 | lookup_decl_die (decl) | |
b3694847 | 5135 | tree decl; |
3f76745e | 5136 | { |
b3694847 | 5137 | unsigned decl_id = DECL_UID (decl); |
3f76745e | 5138 | |
2ad9852d | 5139 | return (decl_id < decl_die_table_in_use ? decl_die_table[decl_id] : NULL); |
a3f97cbb JW |
5140 | } |
5141 | ||
3f76745e | 5142 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 5143 | |
3f76745e JM |
5144 | static void |
5145 | equate_decl_number_to_die (decl, decl_die) | |
b3694847 SS |
5146 | tree decl; |
5147 | dw_die_ref decl_die; | |
a3f97cbb | 5148 | { |
aea9695c RK |
5149 | unsigned int decl_id = DECL_UID (decl); |
5150 | unsigned int num_allocated; | |
d291dd49 | 5151 | |
3f76745e | 5152 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 5153 | { |
3f76745e JM |
5154 | num_allocated |
5155 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
5156 | / DECL_DIE_TABLE_INCREMENT) | |
5157 | * DECL_DIE_TABLE_INCREMENT; | |
5158 | ||
5159 | decl_die_table | |
5160 | = (dw_die_ref *) xrealloc (decl_die_table, | |
5161 | sizeof (dw_die_ref) * num_allocated); | |
5162 | ||
961192e1 | 5163 | memset ((char *) &decl_die_table[decl_die_table_allocated], 0, |
3f76745e JM |
5164 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); |
5165 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 5166 | } |
71dfc51f | 5167 | |
3f76745e JM |
5168 | if (decl_id >= decl_die_table_in_use) |
5169 | decl_die_table_in_use = (decl_id + 1); | |
5170 | ||
5171 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb | 5172 | } |
3f76745e JM |
5173 | \f |
5174 | /* Keep track of the number of spaces used to indent the | |
5175 | output of the debugging routines that print the structure of | |
5176 | the DIE internal representation. */ | |
5177 | static int print_indent; | |
71dfc51f | 5178 | |
3f76745e JM |
5179 | /* Indent the line the number of spaces given by print_indent. */ |
5180 | ||
5181 | static inline void | |
5182 | print_spaces (outfile) | |
5183 | FILE *outfile; | |
5184 | { | |
5185 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
5186 | } |
5187 | ||
956d6950 | 5188 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 5189 | This routine is a debugging aid only. */ |
71dfc51f | 5190 | |
a3f97cbb | 5191 | static void |
3f76745e JM |
5192 | print_die (die, outfile) |
5193 | dw_die_ref die; | |
5194 | FILE *outfile; | |
a3f97cbb | 5195 | { |
b3694847 SS |
5196 | dw_attr_ref a; |
5197 | dw_die_ref c; | |
71dfc51f | 5198 | |
3f76745e | 5199 | print_spaces (outfile); |
2d8b0f3a | 5200 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
5201 | die->die_offset, dwarf_tag_name (die->die_tag)); |
5202 | print_spaces (outfile); | |
2d8b0f3a JL |
5203 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
5204 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
5205 | |
5206 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 5207 | { |
3f76745e JM |
5208 | print_spaces (outfile); |
5209 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
5210 | ||
a96c67ec | 5211 | switch (AT_class (a)) |
3f76745e JM |
5212 | { |
5213 | case dw_val_class_addr: | |
5214 | fprintf (outfile, "address"); | |
5215 | break; | |
a20612aa RH |
5216 | case dw_val_class_offset: |
5217 | fprintf (outfile, "offset"); | |
5218 | break; | |
3f76745e JM |
5219 | case dw_val_class_loc: |
5220 | fprintf (outfile, "location descriptor"); | |
5221 | break; | |
63e46568 | 5222 | case dw_val_class_loc_list: |
a20612aa RH |
5223 | fprintf (outfile, "location list -> label:%s", |
5224 | AT_loc_list (a)->ll_symbol); | |
63e46568 | 5225 | break; |
2bee6045 JJ |
5226 | case dw_val_class_range_list: |
5227 | fprintf (outfile, "range list"); | |
5228 | break; | |
3f76745e | 5229 | case dw_val_class_const: |
a96c67ec | 5230 | fprintf (outfile, "%ld", AT_int (a)); |
3f76745e JM |
5231 | break; |
5232 | case dw_val_class_unsigned_const: | |
a96c67ec | 5233 | fprintf (outfile, "%lu", AT_unsigned (a)); |
3f76745e JM |
5234 | break; |
5235 | case dw_val_class_long_long: | |
2d8b0f3a | 5236 | fprintf (outfile, "constant (%lu,%lu)", |
556273e0 KH |
5237 | a->dw_attr_val.v.val_long_long.hi, |
5238 | a->dw_attr_val.v.val_long_long.low); | |
3f76745e JM |
5239 | break; |
5240 | case dw_val_class_float: | |
5241 | fprintf (outfile, "floating-point constant"); | |
5242 | break; | |
5243 | case dw_val_class_flag: | |
a96c67ec | 5244 | fprintf (outfile, "%u", AT_flag (a)); |
3f76745e JM |
5245 | break; |
5246 | case dw_val_class_die_ref: | |
a96c67ec | 5247 | if (AT_ref (a) != NULL) |
881c6935 | 5248 | { |
1bfb5f8f | 5249 | if (AT_ref (a)->die_symbol) |
881c6935 JM |
5250 | fprintf (outfile, "die -> label: %s", AT_ref (a)->die_symbol); |
5251 | else | |
5252 | fprintf (outfile, "die -> %lu", AT_ref (a)->die_offset); | |
5253 | } | |
3f76745e JM |
5254 | else |
5255 | fprintf (outfile, "die -> <null>"); | |
5256 | break; | |
5257 | case dw_val_class_lbl_id: | |
8b790721 | 5258 | case dw_val_class_lbl_offset: |
a96c67ec | 5259 | fprintf (outfile, "label: %s", AT_lbl (a)); |
3f76745e | 5260 | break; |
3f76745e | 5261 | case dw_val_class_str: |
a96c67ec JM |
5262 | if (AT_string (a) != NULL) |
5263 | fprintf (outfile, "\"%s\"", AT_string (a)); | |
3f76745e JM |
5264 | else |
5265 | fprintf (outfile, "<null>"); | |
5266 | break; | |
e9a25f70 JL |
5267 | default: |
5268 | break; | |
3f76745e JM |
5269 | } |
5270 | ||
5271 | fprintf (outfile, "\n"); | |
5272 | } | |
5273 | ||
5274 | if (die->die_child != NULL) | |
5275 | { | |
5276 | print_indent += 4; | |
5277 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5278 | print_die (c, outfile); | |
71dfc51f | 5279 | |
3f76745e | 5280 | print_indent -= 4; |
a3f97cbb | 5281 | } |
881c6935 JM |
5282 | if (print_indent == 0) |
5283 | fprintf (outfile, "\n"); | |
a3f97cbb JW |
5284 | } |
5285 | ||
3f76745e JM |
5286 | /* Print the contents of the source code line number correspondence table. |
5287 | This routine is a debugging aid only. */ | |
71dfc51f | 5288 | |
3f76745e JM |
5289 | static void |
5290 | print_dwarf_line_table (outfile) | |
5291 | FILE *outfile; | |
a3f97cbb | 5292 | { |
b3694847 SS |
5293 | unsigned i; |
5294 | dw_line_info_ref line_info; | |
3f76745e JM |
5295 | |
5296 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
2ad9852d | 5297 | for (i = 1; i < line_info_table_in_use; i++) |
a3f97cbb | 5298 | { |
3f76745e JM |
5299 | line_info = &line_info_table[i]; |
5300 | fprintf (outfile, "%5d: ", i); | |
981975b6 | 5301 | fprintf (outfile, "%-20s", file_table.table[line_info->dw_file_num]); |
2d8b0f3a | 5302 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 5303 | fprintf (outfile, "\n"); |
a3f97cbb | 5304 | } |
3f76745e JM |
5305 | |
5306 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
5307 | } |
5308 | ||
3f76745e JM |
5309 | /* Print the information collected for a given DIE. */ |
5310 | ||
5311 | void | |
5312 | debug_dwarf_die (die) | |
5313 | dw_die_ref die; | |
5314 | { | |
5315 | print_die (die, stderr); | |
5316 | } | |
5317 | ||
5318 | /* Print all DWARF information collected for the compilation unit. | |
5319 | This routine is a debugging aid only. */ | |
5320 | ||
5321 | void | |
5322 | debug_dwarf () | |
5323 | { | |
5324 | print_indent = 0; | |
5325 | print_die (comp_unit_die, stderr); | |
b2244e22 JW |
5326 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
5327 | print_dwarf_line_table (stderr); | |
3f76745e JM |
5328 | } |
5329 | \f | |
a96c67ec JM |
5330 | /* We build up the lists of children and attributes by pushing new ones |
5331 | onto the beginning of the list. Reverse the lists for DIE so that | |
5332 | they are in order of addition. */ | |
71dfc51f | 5333 | |
f37230f0 | 5334 | static void |
a96c67ec | 5335 | reverse_die_lists (die) |
b3694847 | 5336 | dw_die_ref die; |
f37230f0 | 5337 | { |
b3694847 SS |
5338 | dw_die_ref c, cp, cn; |
5339 | dw_attr_ref a, ap, an; | |
71dfc51f | 5340 | |
a96c67ec | 5341 | for (a = die->die_attr, ap = 0; a; a = an) |
7d9d8943 AM |
5342 | { |
5343 | an = a->dw_attr_next; | |
5344 | a->dw_attr_next = ap; | |
5345 | ap = a; | |
a3f97cbb | 5346 | } |
2ad9852d | 5347 | |
7d9d8943 | 5348 | die->die_attr = ap; |
3f76745e | 5349 | |
7d9d8943 AM |
5350 | for (c = die->die_child, cp = 0; c; c = cn) |
5351 | { | |
5352 | cn = c->die_sib; | |
5353 | c->die_sib = cp; | |
5354 | cp = c; | |
5355 | } | |
2ad9852d | 5356 | |
7d9d8943 | 5357 | die->die_child = cp; |
a3f97cbb JW |
5358 | } |
5359 | ||
2ad9852d RK |
5360 | /* reverse_die_lists only reverses the single die you pass it. Since we used to |
5361 | reverse all dies in add_sibling_attributes, which runs through all the dies, | |
5362 | it would reverse all the dies. Now, however, since we don't call | |
5363 | reverse_die_lists in add_sibling_attributes, we need a routine to | |
5364 | recursively reverse all the dies. This is that routine. */ | |
71dfc51f | 5365 | |
7d9d8943 | 5366 | static void |
881c6935 | 5367 | reverse_all_dies (die) |
b3694847 | 5368 | dw_die_ref die; |
a3f97cbb | 5369 | { |
b3694847 | 5370 | dw_die_ref c; |
71dfc51f | 5371 | |
7d9d8943 | 5372 | reverse_die_lists (die); |
3f76745e | 5373 | |
881c6935 JM |
5374 | for (c = die->die_child; c; c = c->die_sib) |
5375 | reverse_all_dies (c); | |
5376 | } | |
5377 | ||
2ad9852d RK |
5378 | /* Start a new compilation unit DIE for an include file. OLD_UNIT is the CU |
5379 | for the enclosing include file, if any. BINCL_DIE is the DW_TAG_GNU_BINCL | |
5380 | DIE that marks the start of the DIEs for this include file. */ | |
881c6935 JM |
5381 | |
5382 | static dw_die_ref | |
5383 | push_new_compile_unit (old_unit, bincl_die) | |
5384 | dw_die_ref old_unit, bincl_die; | |
5385 | { | |
5386 | const char *filename = get_AT_string (bincl_die, DW_AT_name); | |
5387 | dw_die_ref new_unit = gen_compile_unit_die (filename); | |
2ad9852d | 5388 | |
881c6935 JM |
5389 | new_unit->die_sib = old_unit; |
5390 | return new_unit; | |
5391 | } | |
5392 | ||
5393 | /* Close an include-file CU and reopen the enclosing one. */ | |
5394 | ||
5395 | static dw_die_ref | |
5396 | pop_compile_unit (old_unit) | |
5397 | dw_die_ref old_unit; | |
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 | |
5411 | loc_checksum (loc, ctx) | |
5412 | dw_loc_descr_ref loc; | |
5413 | struct md5_ctx *ctx; | |
5414 | { | |
2ad9852d RK |
5415 | CHECKSUM (loc->dw_loc_opc); |
5416 | CHECKSUM (loc->dw_loc_oprnd1); | |
5417 | CHECKSUM (loc->dw_loc_oprnd2); | |
881c6935 JM |
5418 | } |
5419 | ||
5420 | /* Calculate the checksum of an attribute. */ | |
5421 | ||
5422 | static void | |
5423 | attr_checksum (at, ctx) | |
5424 | dw_attr_ref at; | |
5425 | struct md5_ctx *ctx; | |
5426 | { | |
5427 | dw_loc_descr_ref loc; | |
5428 | rtx r; | |
5429 | ||
2ad9852d | 5430 | CHECKSUM (at->dw_attr); |
881c6935 JM |
5431 | |
5432 | /* We don't care about differences in file numbering. */ | |
5f632b5e JM |
5433 | if (at->dw_attr == DW_AT_decl_file |
5434 | /* Or that this was compiled with a different compiler snapshot; if | |
5435 | the output is the same, that's what matters. */ | |
5436 | || at->dw_attr == DW_AT_producer) | |
881c6935 JM |
5437 | return; |
5438 | ||
5439 | switch (AT_class (at)) | |
5440 | { | |
5441 | case dw_val_class_const: | |
2ad9852d | 5442 | CHECKSUM (at->dw_attr_val.v.val_int); |
881c6935 JM |
5443 | break; |
5444 | case dw_val_class_unsigned_const: | |
2ad9852d | 5445 | CHECKSUM (at->dw_attr_val.v.val_unsigned); |
881c6935 JM |
5446 | break; |
5447 | case dw_val_class_long_long: | |
2ad9852d | 5448 | CHECKSUM (at->dw_attr_val.v.val_long_long); |
881c6935 JM |
5449 | break; |
5450 | case dw_val_class_float: | |
2ad9852d | 5451 | CHECKSUM (at->dw_attr_val.v.val_float); |
881c6935 JM |
5452 | break; |
5453 | case dw_val_class_flag: | |
2ad9852d | 5454 | CHECKSUM (at->dw_attr_val.v.val_flag); |
881c6935 | 5455 | break; |
881c6935 | 5456 | case dw_val_class_str: |
2ad9852d | 5457 | CHECKSUM_STRING (AT_string (at)); |
881c6935 | 5458 | break; |
a20612aa | 5459 | |
881c6935 JM |
5460 | case dw_val_class_addr: |
5461 | r = AT_addr (at); | |
5462 | switch (GET_CODE (r)) | |
5463 | { | |
5464 | case SYMBOL_REF: | |
2ad9852d | 5465 | CHECKSUM_STRING (XSTR (r, 0)); |
881c6935 JM |
5466 | break; |
5467 | ||
5468 | default: | |
5469 | abort (); | |
5470 | } | |
5471 | break; | |
5472 | ||
a20612aa | 5473 | case dw_val_class_offset: |
2ad9852d | 5474 | CHECKSUM (at->dw_attr_val.v.val_offset); |
a20612aa RH |
5475 | break; |
5476 | ||
881c6935 JM |
5477 | case dw_val_class_loc: |
5478 | for (loc = AT_loc (at); loc; loc = loc->dw_loc_next) | |
5479 | loc_checksum (loc, ctx); | |
5480 | break; | |
5481 | ||
5482 | case dw_val_class_die_ref: | |
5483 | if (AT_ref (at)->die_offset) | |
2ad9852d | 5484 | CHECKSUM (AT_ref (at)->die_offset); |
881c6935 JM |
5485 | /* FIXME else use target die name or something. */ |
5486 | ||
5487 | case dw_val_class_fde_ref: | |
5488 | case dw_val_class_lbl_id: | |
5489 | case dw_val_class_lbl_offset: | |
a20612aa | 5490 | break; |
881c6935 JM |
5491 | |
5492 | default: | |
5493 | break; | |
5494 | } | |
5495 | } | |
5496 | ||
5497 | /* Calculate the checksum of a DIE. */ | |
5498 | ||
5499 | static void | |
5500 | die_checksum (die, ctx) | |
5501 | dw_die_ref die; | |
5502 | struct md5_ctx *ctx; | |
5503 | { | |
5504 | dw_die_ref c; | |
5505 | dw_attr_ref a; | |
5506 | ||
2ad9852d | 5507 | CHECKSUM (die->die_tag); |
881c6935 JM |
5508 | |
5509 | for (a = die->die_attr; a; a = a->dw_attr_next) | |
5510 | attr_checksum (a, ctx); | |
5511 | ||
5512 | for (c = die->die_child; c; c = c->die_sib) | |
5513 | die_checksum (c, ctx); | |
5514 | } | |
5515 | ||
2ad9852d RK |
5516 | #undef CHECKSUM |
5517 | #undef CHECKSUM_STRING | |
881c6935 JM |
5518 | |
5519 | /* The prefix to attach to symbols on DIEs in the current comdat debug | |
5520 | info section. */ | |
5521 | static char *comdat_symbol_id; | |
5522 | ||
5523 | /* The index of the current symbol within the current comdat CU. */ | |
5524 | static unsigned int comdat_symbol_number; | |
5525 | ||
5526 | /* Calculate the MD5 checksum of the compilation unit DIE UNIT_DIE and its | |
5527 | children, and set comdat_symbol_id accordingly. */ | |
5528 | ||
5529 | static void | |
5530 | compute_section_prefix (unit_die) | |
5531 | dw_die_ref unit_die; | |
5532 | { | |
f11c3043 RK |
5533 | const char *base = lbasename (get_AT_string (unit_die, DW_AT_name)); |
5534 | char *name = (char *) alloca (strlen (base) + 64); | |
5535 | char *p; | |
881c6935 JM |
5536 | int i; |
5537 | unsigned char checksum[16]; | |
5538 | struct md5_ctx ctx; | |
5539 | ||
f11c3043 RK |
5540 | /* Compute the checksum of the DIE, then append part of it as hex digits to |
5541 | the name filename of the unit. */ | |
5542 | ||
881c6935 JM |
5543 | md5_init_ctx (&ctx); |
5544 | die_checksum (unit_die, &ctx); | |
5545 | md5_finish_ctx (&ctx, checksum); | |
5546 | ||
0023400b | 5547 | sprintf (name, "%s.", base); |
881c6935 JM |
5548 | clean_symbol_name (name); |
5549 | ||
2ad9852d RK |
5550 | p = name + strlen (name); |
5551 | for (i = 0; i < 4; i++) | |
5552 | { | |
5553 | sprintf (p, "%.2x", checksum[i]); | |
5554 | p += 2; | |
5555 | } | |
881c6935 JM |
5556 | |
5557 | comdat_symbol_id = unit_die->die_symbol = xstrdup (name); | |
5558 | comdat_symbol_number = 0; | |
5559 | } | |
5560 | ||
f11c3043 | 5561 | /* Returns nonzero if DIE represents a type, in the sense of TYPE_P. */ |
881c6935 JM |
5562 | |
5563 | static int | |
5564 | is_type_die (die) | |
5565 | dw_die_ref die; | |
5566 | { | |
5567 | switch (die->die_tag) | |
5568 | { | |
5569 | case DW_TAG_array_type: | |
5570 | case DW_TAG_class_type: | |
5571 | case DW_TAG_enumeration_type: | |
5572 | case DW_TAG_pointer_type: | |
5573 | case DW_TAG_reference_type: | |
5574 | case DW_TAG_string_type: | |
5575 | case DW_TAG_structure_type: | |
5576 | case DW_TAG_subroutine_type: | |
5577 | case DW_TAG_union_type: | |
5578 | case DW_TAG_ptr_to_member_type: | |
5579 | case DW_TAG_set_type: | |
5580 | case DW_TAG_subrange_type: | |
5581 | case DW_TAG_base_type: | |
5582 | case DW_TAG_const_type: | |
5583 | case DW_TAG_file_type: | |
5584 | case DW_TAG_packed_type: | |
5585 | case DW_TAG_volatile_type: | |
5586 | return 1; | |
5587 | default: | |
5588 | return 0; | |
5589 | } | |
5590 | } | |
5591 | ||
5592 | /* Returns 1 iff C is the sort of DIE that should go into a COMDAT CU. | |
5593 | Basically, we want to choose the bits that are likely to be shared between | |
5594 | compilations (types) and leave out the bits that are specific to individual | |
5595 | compilations (functions). */ | |
5596 | ||
5597 | static int | |
5598 | is_comdat_die (c) | |
5599 | dw_die_ref c; | |
5600 | { | |
2ad9852d RK |
5601 | /* I think we want to leave base types and __vtbl_ptr_type in the main CU, as |
5602 | we do for stabs. The advantage is a greater likelihood of sharing between | |
5603 | objects that don't include headers in the same order (and therefore would | |
5604 | put the base types in a different comdat). jason 8/28/00 */ | |
5605 | ||
881c6935 JM |
5606 | if (c->die_tag == DW_TAG_base_type) |
5607 | return 0; | |
5608 | ||
5609 | if (c->die_tag == DW_TAG_pointer_type | |
5610 | || c->die_tag == DW_TAG_reference_type | |
5611 | || c->die_tag == DW_TAG_const_type | |
5612 | || c->die_tag == DW_TAG_volatile_type) | |
5613 | { | |
5614 | dw_die_ref t = get_AT_ref (c, DW_AT_type); | |
2ad9852d | 5615 | |
881c6935 JM |
5616 | return t ? is_comdat_die (t) : 0; |
5617 | } | |
881c6935 JM |
5618 | |
5619 | return is_type_die (c); | |
5620 | } | |
5621 | ||
5622 | /* Returns 1 iff C is the sort of DIE that might be referred to from another | |
5623 | compilation unit. */ | |
5624 | ||
5625 | static int | |
5626 | is_symbol_die (c) | |
5627 | dw_die_ref c; | |
5628 | { | |
2ad9852d | 5629 | return (is_type_die (c) |
c26fbbca | 5630 | || (get_AT (c, DW_AT_declaration) |
2ad9852d | 5631 | && !get_AT (c, DW_AT_specification))); |
881c6935 JM |
5632 | } |
5633 | ||
5634 | static char * | |
63e46568 | 5635 | gen_internal_sym (prefix) |
173bf5be | 5636 | const char *prefix; |
881c6935 JM |
5637 | { |
5638 | char buf[256]; | |
5639 | static int label_num; | |
2ad9852d | 5640 | |
63e46568 | 5641 | ASM_GENERATE_INTERNAL_LABEL (buf, prefix, label_num++); |
881c6935 JM |
5642 | return xstrdup (buf); |
5643 | } | |
5644 | ||
5645 | /* Assign symbols to all worthy DIEs under DIE. */ | |
5646 | ||
5647 | static void | |
5648 | assign_symbol_names (die) | |
b3694847 | 5649 | dw_die_ref die; |
881c6935 | 5650 | { |
b3694847 | 5651 | dw_die_ref c; |
881c6935 JM |
5652 | |
5653 | if (is_symbol_die (die)) | |
5654 | { | |
5655 | if (comdat_symbol_id) | |
5656 | { | |
5657 | char *p = alloca (strlen (comdat_symbol_id) + 64); | |
2ad9852d | 5658 | |
881c6935 JM |
5659 | sprintf (p, "%s.%s.%x", DIE_LABEL_PREFIX, |
5660 | comdat_symbol_id, comdat_symbol_number++); | |
5661 | die->die_symbol = xstrdup (p); | |
5662 | } | |
5663 | else | |
63e46568 | 5664 | die->die_symbol = gen_internal_sym ("LDIE"); |
881c6935 JM |
5665 | } |
5666 | ||
5667 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5668 | assign_symbol_names (c); | |
5669 | } | |
5670 | ||
5671 | /* Traverse the DIE (which is always comp_unit_die), and set up | |
5672 | additional compilation units for each of the include files we see | |
5673 | bracketed by BINCL/EINCL. */ | |
5674 | ||
5675 | static void | |
5676 | break_out_includes (die) | |
b3694847 | 5677 | dw_die_ref die; |
881c6935 JM |
5678 | { |
5679 | dw_die_ref *ptr; | |
b3694847 | 5680 | dw_die_ref unit = NULL; |
881c6935 JM |
5681 | limbo_die_node *node; |
5682 | ||
c26fbbca | 5683 | for (ptr = &(die->die_child); *ptr;) |
881c6935 | 5684 | { |
b3694847 | 5685 | dw_die_ref c = *ptr; |
881c6935 | 5686 | |
2ad9852d | 5687 | if (c->die_tag == DW_TAG_GNU_BINCL || c->die_tag == DW_TAG_GNU_EINCL |
881c6935 JM |
5688 | || (unit && is_comdat_die (c))) |
5689 | { | |
5690 | /* This DIE is for a secondary CU; remove it from the main one. */ | |
5691 | *ptr = c->die_sib; | |
5692 | ||
5693 | if (c->die_tag == DW_TAG_GNU_BINCL) | |
5694 | { | |
5695 | unit = push_new_compile_unit (unit, c); | |
5696 | free_die (c); | |
5697 | } | |
5698 | else if (c->die_tag == DW_TAG_GNU_EINCL) | |
5699 | { | |
5700 | unit = pop_compile_unit (unit); | |
5701 | free_die (c); | |
5702 | } | |
5703 | else | |
5704 | add_child_die (unit, c); | |
5705 | } | |
5706 | else | |
5707 | { | |
5708 | /* Leave this DIE in the main CU. */ | |
5709 | ptr = &(c->die_sib); | |
5710 | continue; | |
5711 | } | |
5712 | } | |
5713 | ||
5714 | #if 0 | |
5715 | /* We can only use this in debugging, since the frontend doesn't check | |
0b34cf1e | 5716 | to make sure that we leave every include file we enter. */ |
881c6935 JM |
5717 | if (unit != NULL) |
5718 | abort (); | |
5719 | #endif | |
5720 | ||
5721 | assign_symbol_names (die); | |
5722 | for (node = limbo_die_list; node; node = node->next) | |
5723 | { | |
5724 | compute_section_prefix (node->die); | |
5725 | assign_symbol_names (node->die); | |
5726 | } | |
5727 | } | |
5728 | ||
5729 | /* Traverse the DIE and add a sibling attribute if it may have the | |
5730 | effect of speeding up access to siblings. To save some space, | |
5731 | avoid generating sibling attributes for DIE's without children. */ | |
5732 | ||
5733 | static void | |
5734 | add_sibling_attributes (die) | |
b3694847 | 5735 | dw_die_ref die; |
881c6935 | 5736 | { |
b3694847 | 5737 | dw_die_ref c; |
881c6935 JM |
5738 | |
5739 | if (die->die_tag != DW_TAG_compile_unit | |
5740 | && die->die_sib && die->die_child != NULL) | |
7d9d8943 AM |
5741 | /* Add the sibling link to the front of the attribute list. */ |
5742 | add_AT_die_ref (die, DW_AT_sibling, die->die_sib); | |
5743 | ||
5744 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5745 | add_sibling_attributes (c); | |
5746 | } | |
5747 | ||
2ad9852d RK |
5748 | /* Output all location lists for the DIE and its children. */ |
5749 | ||
63e46568 DB |
5750 | static void |
5751 | output_location_lists (die) | |
b3694847 | 5752 | dw_die_ref die; |
63e46568 DB |
5753 | { |
5754 | dw_die_ref c; | |
5755 | dw_attr_ref d_attr; | |
2ad9852d | 5756 | |
63e46568 | 5757 | for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next) |
2ad9852d RK |
5758 | if (AT_class (d_attr) == dw_val_class_loc_list) |
5759 | output_loc_list (AT_loc_list (d_attr)); | |
5760 | ||
63e46568 DB |
5761 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5762 | output_location_lists (c); | |
5763 | ||
5764 | } | |
c26fbbca | 5765 | |
2ad9852d RK |
5766 | /* The format of each DIE (and its attribute value pairs) is encoded in an |
5767 | abbreviation table. This routine builds the abbreviation table and assigns | |
5768 | a unique abbreviation id for each abbreviation entry. The children of each | |
5769 | die are visited recursively. */ | |
7d9d8943 AM |
5770 | |
5771 | static void | |
5772 | build_abbrev_table (die) | |
b3694847 | 5773 | dw_die_ref die; |
7d9d8943 | 5774 | { |
b3694847 SS |
5775 | unsigned long abbrev_id; |
5776 | unsigned int n_alloc; | |
5777 | dw_die_ref c; | |
5778 | dw_attr_ref d_attr, a_attr; | |
881c6935 JM |
5779 | |
5780 | /* Scan the DIE references, and mark as external any that refer to | |
1bfb5f8f | 5781 | DIEs from other CUs (i.e. those which are not marked). */ |
881c6935 | 5782 | for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next) |
2ad9852d RK |
5783 | if (AT_class (d_attr) == dw_val_class_die_ref |
5784 | && AT_ref (d_attr)->die_mark == 0) | |
5785 | { | |
5786 | if (AT_ref (d_attr)->die_symbol == 0) | |
5787 | abort (); | |
5788 | ||
5789 | set_AT_ref_external (d_attr, 1); | |
5790 | } | |
881c6935 | 5791 | |
7d9d8943 AM |
5792 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
5793 | { | |
b3694847 | 5794 | dw_die_ref abbrev = abbrev_die_table[abbrev_id]; |
7d9d8943 AM |
5795 | |
5796 | if (abbrev->die_tag == die->die_tag) | |
5797 | { | |
5798 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
5799 | { | |
5800 | a_attr = abbrev->die_attr; | |
5801 | d_attr = die->die_attr; | |
5802 | ||
5803 | while (a_attr != NULL && d_attr != NULL) | |
5804 | { | |
5805 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
5806 | || (value_format (a_attr) != value_format (d_attr))) | |
5807 | break; | |
5808 | ||
5809 | a_attr = a_attr->dw_attr_next; | |
5810 | d_attr = d_attr->dw_attr_next; | |
5811 | } | |
5812 | ||
5813 | if (a_attr == NULL && d_attr == NULL) | |
5814 | break; | |
5815 | } | |
5816 | } | |
5817 | } | |
5818 | ||
5819 | if (abbrev_id >= abbrev_die_table_in_use) | |
5820 | { | |
5821 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
5822 | { | |
5823 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; | |
556273e0 | 5824 | abbrev_die_table |
7d9d8943 AM |
5825 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
5826 | sizeof (dw_die_ref) * n_alloc); | |
5827 | ||
961192e1 | 5828 | memset ((char *) &abbrev_die_table[abbrev_die_table_allocated], 0, |
7d9d8943 AM |
5829 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); |
5830 | abbrev_die_table_allocated = n_alloc; | |
5831 | } | |
5832 | ||
5833 | ++abbrev_die_table_in_use; | |
5834 | abbrev_die_table[abbrev_id] = die; | |
5835 | } | |
5836 | ||
5837 | die->die_abbrev = abbrev_id; | |
5838 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5839 | build_abbrev_table (c); | |
5840 | } | |
5841 | \f | |
3f76745e JM |
5842 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ |
5843 | ||
5844 | static int | |
5845 | constant_size (value) | |
5846 | long unsigned value; | |
5847 | { | |
5848 | int log; | |
5849 | ||
5850 | if (value == 0) | |
5851 | log = 0; | |
a3f97cbb | 5852 | else |
3f76745e | 5853 | log = floor_log2 (value); |
71dfc51f | 5854 | |
3f76745e JM |
5855 | log = log / 8; |
5856 | log = 1 << (floor_log2 (log) + 1); | |
5857 | ||
5858 | return log; | |
a3f97cbb JW |
5859 | } |
5860 | ||
2ad9852d | 5861 | /* Return the size of a DIE as it is represented in the |
3f76745e | 5862 | .debug_info section. */ |
71dfc51f | 5863 | |
3f76745e JM |
5864 | static unsigned long |
5865 | size_of_die (die) | |
b3694847 | 5866 | dw_die_ref die; |
a3f97cbb | 5867 | { |
b3694847 SS |
5868 | unsigned long size = 0; |
5869 | dw_attr_ref a; | |
71dfc51f | 5870 | |
3f76745e | 5871 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
5872 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
5873 | { | |
a96c67ec | 5874 | switch (AT_class (a)) |
a3f97cbb JW |
5875 | { |
5876 | case dw_val_class_addr: | |
a1a4189d | 5877 | size += DWARF2_ADDR_SIZE; |
a3f97cbb | 5878 | break; |
a20612aa RH |
5879 | case dw_val_class_offset: |
5880 | size += DWARF_OFFSET_SIZE; | |
5881 | break; | |
a3f97cbb | 5882 | case dw_val_class_loc: |
3f76745e | 5883 | { |
b3694847 | 5884 | unsigned long lsize = size_of_locs (AT_loc (a)); |
71dfc51f | 5885 | |
3f76745e JM |
5886 | /* Block length. */ |
5887 | size += constant_size (lsize); | |
5888 | size += lsize; | |
5889 | } | |
a3f97cbb | 5890 | break; |
63e46568 DB |
5891 | case dw_val_class_loc_list: |
5892 | size += DWARF_OFFSET_SIZE; | |
5893 | break; | |
2bee6045 JJ |
5894 | case dw_val_class_range_list: |
5895 | size += DWARF_OFFSET_SIZE; | |
5896 | break; | |
a3f97cbb | 5897 | case dw_val_class_const: |
25dd13ec | 5898 | size += size_of_sleb128 (AT_int (a)); |
a3f97cbb JW |
5899 | break; |
5900 | case dw_val_class_unsigned_const: | |
a96c67ec | 5901 | size += constant_size (AT_unsigned (a)); |
a3f97cbb | 5902 | break; |
469ac993 | 5903 | case dw_val_class_long_long: |
2e4b9b8c | 5904 | size += 1 + 2*HOST_BITS_PER_LONG/HOST_BITS_PER_CHAR; /* block */ |
469ac993 JM |
5905 | break; |
5906 | case dw_val_class_float: | |
3f76745e | 5907 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
5908 | break; |
5909 | case dw_val_class_flag: | |
3f76745e | 5910 | size += 1; |
a3f97cbb JW |
5911 | break; |
5912 | case dw_val_class_die_ref: | |
3f76745e | 5913 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
5914 | break; |
5915 | case dw_val_class_fde_ref: | |
3f76745e | 5916 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
5917 | break; |
5918 | case dw_val_class_lbl_id: | |
a1a4189d | 5919 | size += DWARF2_ADDR_SIZE; |
3f76745e | 5920 | break; |
8b790721 | 5921 | case dw_val_class_lbl_offset: |
3f76745e JM |
5922 | size += DWARF_OFFSET_SIZE; |
5923 | break; | |
5924 | case dw_val_class_str: | |
9eb4015a JJ |
5925 | if (AT_string_form (a) == DW_FORM_strp) |
5926 | size += DWARF_OFFSET_SIZE; | |
5927 | else | |
5928 | size += HT_LEN (&a->dw_attr_val.v.val_str->id) + 1; | |
3f76745e JM |
5929 | break; |
5930 | default: | |
5931 | abort (); | |
5932 | } | |
a3f97cbb | 5933 | } |
3f76745e JM |
5934 | |
5935 | return size; | |
a3f97cbb JW |
5936 | } |
5937 | ||
2ad9852d RK |
5938 | /* Size the debugging information associated with a given DIE. Visits the |
5939 | DIE's children recursively. Updates the global variable next_die_offset, on | |
5940 | each time through. Uses the current value of next_die_offset to update the | |
5941 | die_offset field in each DIE. */ | |
71dfc51f | 5942 | |
a3f97cbb | 5943 | static void |
3f76745e JM |
5944 | calc_die_sizes (die) |
5945 | dw_die_ref die; | |
a3f97cbb | 5946 | { |
b3694847 | 5947 | dw_die_ref c; |
2ad9852d | 5948 | |
3f76745e JM |
5949 | die->die_offset = next_die_offset; |
5950 | next_die_offset += size_of_die (die); | |
71dfc51f | 5951 | |
3f76745e JM |
5952 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5953 | calc_die_sizes (c); | |
71dfc51f | 5954 | |
3f76745e JM |
5955 | if (die->die_child != NULL) |
5956 | /* Count the null byte used to terminate sibling lists. */ | |
5957 | next_die_offset += 1; | |
a3f97cbb JW |
5958 | } |
5959 | ||
1bfb5f8f | 5960 | /* Set the marks for a die and its children. We do this so |
881c6935 | 5961 | that we know whether or not a reference needs to use FORM_ref_addr; only |
1bfb5f8f JM |
5962 | DIEs in the same CU will be marked. We used to clear out the offset |
5963 | and use that as the flag, but ran into ordering problems. */ | |
881c6935 JM |
5964 | |
5965 | static void | |
1bfb5f8f | 5966 | mark_dies (die) |
881c6935 JM |
5967 | dw_die_ref die; |
5968 | { | |
b3694847 | 5969 | dw_die_ref c; |
2ad9852d | 5970 | |
1bfb5f8f JM |
5971 | die->die_mark = 1; |
5972 | for (c = die->die_child; c; c = c->die_sib) | |
5973 | mark_dies (c); | |
5974 | } | |
5975 | ||
5976 | /* Clear the marks for a die and its children. */ | |
5977 | ||
5978 | static void | |
5979 | unmark_dies (die) | |
5980 | dw_die_ref die; | |
5981 | { | |
b3694847 | 5982 | dw_die_ref c; |
2ad9852d | 5983 | |
1bfb5f8f | 5984 | die->die_mark = 0; |
881c6935 | 5985 | for (c = die->die_child; c; c = c->die_sib) |
1bfb5f8f | 5986 | unmark_dies (c); |
881c6935 JM |
5987 | } |
5988 | ||
3f76745e JM |
5989 | /* Return the size of the .debug_pubnames table generated for the |
5990 | compilation unit. */ | |
a94dbf2c | 5991 | |
3f76745e JM |
5992 | static unsigned long |
5993 | size_of_pubnames () | |
a94dbf2c | 5994 | { |
b3694847 SS |
5995 | unsigned long size; |
5996 | unsigned i; | |
469ac993 | 5997 | |
3f76745e | 5998 | size = DWARF_PUBNAMES_HEADER_SIZE; |
2ad9852d | 5999 | for (i = 0; i < pubname_table_in_use; i++) |
a94dbf2c | 6000 | { |
b3694847 | 6001 | pubname_ref p = &pubname_table[i]; |
9eb4015a | 6002 | size += DWARF_OFFSET_SIZE + strlen (p->name) + 1; |
a94dbf2c JM |
6003 | } |
6004 | ||
3f76745e JM |
6005 | size += DWARF_OFFSET_SIZE; |
6006 | return size; | |
a94dbf2c JM |
6007 | } |
6008 | ||
956d6950 | 6009 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 6010 | |
3f76745e JM |
6011 | static unsigned long |
6012 | size_of_aranges () | |
469ac993 | 6013 | { |
b3694847 | 6014 | unsigned long size; |
469ac993 | 6015 | |
3f76745e | 6016 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 6017 | |
3f76745e | 6018 | /* Count the address/length pair for this compilation unit. */ |
a1a4189d JB |
6019 | size += 2 * DWARF2_ADDR_SIZE; |
6020 | size += 2 * DWARF2_ADDR_SIZE * arange_table_in_use; | |
469ac993 | 6021 | |
3f76745e | 6022 | /* Count the two zero words used to terminated the address range table. */ |
a1a4189d | 6023 | size += 2 * DWARF2_ADDR_SIZE; |
3f76745e JM |
6024 | return size; |
6025 | } | |
6026 | \f | |
6027 | /* Select the encoding of an attribute value. */ | |
6028 | ||
6029 | static enum dwarf_form | |
a96c67ec JM |
6030 | value_format (a) |
6031 | dw_attr_ref a; | |
3f76745e | 6032 | { |
a96c67ec | 6033 | switch (a->dw_attr_val.val_class) |
469ac993 | 6034 | { |
3f76745e JM |
6035 | case dw_val_class_addr: |
6036 | return DW_FORM_addr; | |
2bee6045 | 6037 | case dw_val_class_range_list: |
a20612aa RH |
6038 | case dw_val_class_offset: |
6039 | if (DWARF_OFFSET_SIZE == 4) | |
6040 | return DW_FORM_data4; | |
6041 | if (DWARF_OFFSET_SIZE == 8) | |
6042 | return DW_FORM_data8; | |
6043 | abort (); | |
63e46568 | 6044 | case dw_val_class_loc_list: |
9d2f2c45 RH |
6045 | /* FIXME: Could be DW_FORM_data8, with a > 32 bit size |
6046 | .debug_loc section */ | |
6047 | return DW_FORM_data4; | |
3f76745e | 6048 | case dw_val_class_loc: |
a96c67ec | 6049 | switch (constant_size (size_of_locs (AT_loc (a)))) |
469ac993 | 6050 | { |
3f76745e JM |
6051 | case 1: |
6052 | return DW_FORM_block1; | |
6053 | case 2: | |
6054 | return DW_FORM_block2; | |
469ac993 JM |
6055 | default: |
6056 | abort (); | |
6057 | } | |
3f76745e | 6058 | case dw_val_class_const: |
25dd13ec | 6059 | return DW_FORM_sdata; |
3f76745e | 6060 | case dw_val_class_unsigned_const: |
a96c67ec | 6061 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
6062 | { |
6063 | case 1: | |
6064 | return DW_FORM_data1; | |
6065 | case 2: | |
6066 | return DW_FORM_data2; | |
6067 | case 4: | |
6068 | return DW_FORM_data4; | |
6069 | case 8: | |
6070 | return DW_FORM_data8; | |
6071 | default: | |
6072 | abort (); | |
6073 | } | |
6074 | case dw_val_class_long_long: | |
6075 | return DW_FORM_block1; | |
6076 | case dw_val_class_float: | |
6077 | return DW_FORM_block1; | |
6078 | case dw_val_class_flag: | |
6079 | return DW_FORM_flag; | |
6080 | case dw_val_class_die_ref: | |
881c6935 JM |
6081 | if (AT_ref_external (a)) |
6082 | return DW_FORM_ref_addr; | |
6083 | else | |
6084 | return DW_FORM_ref; | |
3f76745e JM |
6085 | case dw_val_class_fde_ref: |
6086 | return DW_FORM_data; | |
6087 | case dw_val_class_lbl_id: | |
6088 | return DW_FORM_addr; | |
8b790721 | 6089 | case dw_val_class_lbl_offset: |
3f76745e JM |
6090 | return DW_FORM_data; |
6091 | case dw_val_class_str: | |
9eb4015a | 6092 | return AT_string_form (a); |
a20612aa | 6093 | |
469ac993 JM |
6094 | default: |
6095 | abort (); | |
6096 | } | |
a94dbf2c JM |
6097 | } |
6098 | ||
3f76745e | 6099 | /* Output the encoding of an attribute value. */ |
469ac993 | 6100 | |
3f76745e | 6101 | static void |
a96c67ec JM |
6102 | output_value_format (a) |
6103 | dw_attr_ref a; | |
a94dbf2c | 6104 | { |
a96c67ec | 6105 | enum dwarf_form form = value_format (a); |
2ad9852d | 6106 | |
2e4b9b8c | 6107 | dw2_asm_output_data_uleb128 (form, "(%s)", dwarf_form_name (form)); |
3f76745e | 6108 | } |
469ac993 | 6109 | |
3f76745e JM |
6110 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
6111 | table. */ | |
469ac993 | 6112 | |
3f76745e JM |
6113 | static void |
6114 | output_abbrev_section () | |
6115 | { | |
6116 | unsigned long abbrev_id; | |
71dfc51f | 6117 | |
3f76745e | 6118 | dw_attr_ref a_attr; |
2ad9852d | 6119 | |
3f76745e JM |
6120 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
6121 | { | |
b3694847 | 6122 | dw_die_ref abbrev = abbrev_die_table[abbrev_id]; |
71dfc51f | 6123 | |
2e4b9b8c | 6124 | dw2_asm_output_data_uleb128 (abbrev_id, "(abbrev code)"); |
2e4b9b8c RH |
6125 | dw2_asm_output_data_uleb128 (abbrev->die_tag, "(TAG: %s)", |
6126 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 6127 | |
2e4b9b8c RH |
6128 | if (abbrev->die_child != NULL) |
6129 | dw2_asm_output_data (1, DW_children_yes, "DW_children_yes"); | |
6130 | else | |
6131 | dw2_asm_output_data (1, DW_children_no, "DW_children_no"); | |
3f76745e JM |
6132 | |
6133 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
6134 | a_attr = a_attr->dw_attr_next) | |
6135 | { | |
2e4b9b8c RH |
6136 | dw2_asm_output_data_uleb128 (a_attr->dw_attr, "(%s)", |
6137 | dwarf_attr_name (a_attr->dw_attr)); | |
a96c67ec | 6138 | output_value_format (a_attr); |
469ac993 | 6139 | } |
469ac993 | 6140 | |
2e4b9b8c RH |
6141 | dw2_asm_output_data (1, 0, NULL); |
6142 | dw2_asm_output_data (1, 0, NULL); | |
469ac993 | 6143 | } |
81f374eb HPN |
6144 | |
6145 | /* Terminate the table. */ | |
2e4b9b8c | 6146 | dw2_asm_output_data (1, 0, NULL); |
a94dbf2c JM |
6147 | } |
6148 | ||
881c6935 JM |
6149 | /* Output a symbol we can use to refer to this DIE from another CU. */ |
6150 | ||
6151 | static inline void | |
6152 | output_die_symbol (die) | |
b3694847 | 6153 | dw_die_ref die; |
881c6935 JM |
6154 | { |
6155 | char *sym = die->die_symbol; | |
6156 | ||
6157 | if (sym == 0) | |
6158 | return; | |
6159 | ||
6160 | if (strncmp (sym, DIE_LABEL_PREFIX, sizeof (DIE_LABEL_PREFIX) - 1) == 0) | |
6161 | /* We make these global, not weak; if the target doesn't support | |
6162 | .linkonce, it doesn't support combining the sections, so debugging | |
6163 | will break. */ | |
5eb99654 | 6164 | (*targetm.asm_out.globalize_label) (asm_out_file, sym); |
2ad9852d | 6165 | |
881c6935 JM |
6166 | ASM_OUTPUT_LABEL (asm_out_file, sym); |
6167 | } | |
6168 | ||
84a5b4f8 | 6169 | /* Return a new location list, given the begin and end range, and the |
2ad9852d RK |
6170 | expression. gensym tells us whether to generate a new internal symbol for |
6171 | this location list node, which is done for the head of the list only. */ | |
6172 | ||
84a5b4f8 DB |
6173 | static inline dw_loc_list_ref |
6174 | new_loc_list (expr, begin, end, section, gensym) | |
b3694847 SS |
6175 | dw_loc_descr_ref expr; |
6176 | const char *begin; | |
6177 | const char *end; | |
6178 | const char *section; | |
6179 | unsigned gensym; | |
84a5b4f8 | 6180 | { |
b3694847 | 6181 | dw_loc_list_ref retlist |
84a5b4f8 | 6182 | = (dw_loc_list_ref) xcalloc (1, sizeof (dw_loc_list_node)); |
2ad9852d | 6183 | |
84a5b4f8 DB |
6184 | retlist->begin = begin; |
6185 | retlist->end = end; | |
6186 | retlist->expr = expr; | |
6187 | retlist->section = section; | |
c26fbbca | 6188 | if (gensym) |
84a5b4f8 | 6189 | retlist->ll_symbol = gen_internal_sym ("LLST"); |
2ad9852d | 6190 | |
84a5b4f8 DB |
6191 | return retlist; |
6192 | } | |
6193 | ||
6194 | /* Add a location description expression to a location list */ | |
2ad9852d | 6195 | |
84a5b4f8 DB |
6196 | static inline void |
6197 | add_loc_descr_to_loc_list (list_head, descr, begin, end, section) | |
b3694847 SS |
6198 | dw_loc_list_ref *list_head; |
6199 | dw_loc_descr_ref descr; | |
6200 | const char *begin; | |
6201 | const char *end; | |
6202 | const char *section; | |
84a5b4f8 | 6203 | { |
b3694847 | 6204 | dw_loc_list_ref *d; |
c26fbbca | 6205 | |
30f7a378 | 6206 | /* Find the end of the chain. */ |
84a5b4f8 DB |
6207 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) |
6208 | ; | |
2ad9852d | 6209 | |
84a5b4f8 DB |
6210 | /* Add a new location list node to the list */ |
6211 | *d = new_loc_list (descr, begin, end, section, 0); | |
6212 | } | |
6213 | ||
63e46568 | 6214 | /* Output the location list given to us */ |
2ad9852d | 6215 | |
63e46568 DB |
6216 | static void |
6217 | output_loc_list (list_head) | |
b3694847 | 6218 | dw_loc_list_ref list_head; |
63e46568 | 6219 | { |
2ad9852d RK |
6220 | dw_loc_list_ref curr = list_head; |
6221 | ||
63e46568 | 6222 | ASM_OUTPUT_LABEL (asm_out_file, list_head->ll_symbol); |
a20612aa RH |
6223 | |
6224 | /* ??? This shouldn't be needed now that we've forced the | |
6225 | compilation unit base address to zero when there is code | |
6226 | in more than one section. */ | |
63e46568 DB |
6227 | if (strcmp (curr->section, ".text") == 0) |
6228 | { | |
aafdcfcd | 6229 | /* dw2_asm_output_data will mask off any extra bits in the ~0. */ |
c4f2c499 | 6230 | dw2_asm_output_data (DWARF2_ADDR_SIZE, ~(unsigned HOST_WIDE_INT) 0, |
aafdcfcd NS |
6231 | "Location list base address specifier fake entry"); |
6232 | dw2_asm_output_offset (DWARF2_ADDR_SIZE, curr->section, | |
6233 | "Location list base address specifier base"); | |
63e46568 | 6234 | } |
2ad9852d | 6235 | |
c26fbbca | 6236 | for (curr = list_head; curr != NULL; curr = curr->dw_loc_next) |
63e46568 | 6237 | { |
2bee6045 | 6238 | unsigned long size; |
2ad9852d | 6239 | |
aafdcfcd NS |
6240 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, curr->begin, curr->section, |
6241 | "Location list begin address (%s)", | |
6242 | list_head->ll_symbol); | |
6243 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, curr->end, curr->section, | |
6244 | "Location list end address (%s)", | |
6245 | list_head->ll_symbol); | |
63e46568 | 6246 | size = size_of_locs (curr->expr); |
c26fbbca | 6247 | |
63e46568 | 6248 | /* Output the block length for this list of location operations. */ |
2bee6045 JJ |
6249 | if (size > 0xffff) |
6250 | abort (); | |
6251 | dw2_asm_output_data (2, size, "%s", "Location expression size"); | |
6252 | ||
63e46568 DB |
6253 | output_loc_sequence (curr->expr); |
6254 | } | |
2ad9852d | 6255 | |
aafdcfcd NS |
6256 | dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, |
6257 | "Location list terminator begin (%s)", | |
6258 | list_head->ll_symbol); | |
6259 | dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, | |
6260 | "Location list terminator end (%s)", | |
6261 | list_head->ll_symbol); | |
63e46568 | 6262 | } |
9eb4015a | 6263 | |
3f76745e JM |
6264 | /* Output the DIE and its attributes. Called recursively to generate |
6265 | the definitions of each child DIE. */ | |
71dfc51f | 6266 | |
a3f97cbb | 6267 | static void |
3f76745e | 6268 | output_die (die) |
b3694847 | 6269 | dw_die_ref die; |
a3f97cbb | 6270 | { |
b3694847 SS |
6271 | dw_attr_ref a; |
6272 | dw_die_ref c; | |
6273 | unsigned long size; | |
a94dbf2c | 6274 | |
881c6935 JM |
6275 | /* If someone in another CU might refer to us, set up a symbol for |
6276 | them to point to. */ | |
6277 | if (die->die_symbol) | |
6278 | output_die_symbol (die); | |
6279 | ||
2e4b9b8c RH |
6280 | dw2_asm_output_data_uleb128 (die->die_abbrev, "(DIE (0x%lx) %s)", |
6281 | die->die_offset, dwarf_tag_name (die->die_tag)); | |
a94dbf2c | 6282 | |
3f76745e | 6283 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 6284 | { |
2e4b9b8c RH |
6285 | const char *name = dwarf_attr_name (a->dw_attr); |
6286 | ||
a96c67ec | 6287 | switch (AT_class (a)) |
3f76745e JM |
6288 | { |
6289 | case dw_val_class_addr: | |
2e4b9b8c | 6290 | dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, AT_addr (a), "%s", name); |
3f76745e | 6291 | break; |
a3f97cbb | 6292 | |
a20612aa RH |
6293 | case dw_val_class_offset: |
6294 | dw2_asm_output_data (DWARF_OFFSET_SIZE, a->dw_attr_val.v.val_offset, | |
6295 | "%s", name); | |
6296 | break; | |
6297 | ||
2bee6045 JJ |
6298 | case dw_val_class_range_list: |
6299 | { | |
6300 | char *p = strchr (ranges_section_label, '\0'); | |
6301 | ||
6302 | sprintf (p, "+0x%lx", a->dw_attr_val.v.val_offset); | |
6303 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, ranges_section_label, | |
6304 | "%s", name); | |
6305 | *p = '\0'; | |
6306 | } | |
6307 | break; | |
6308 | ||
3f76745e | 6309 | case dw_val_class_loc: |
a96c67ec | 6310 | size = size_of_locs (AT_loc (a)); |
71dfc51f | 6311 | |
3f76745e | 6312 | /* Output the block length for this list of location operations. */ |
2e4b9b8c | 6313 | dw2_asm_output_data (constant_size (size), size, "%s", name); |
71dfc51f | 6314 | |
7d9d8943 | 6315 | output_loc_sequence (AT_loc (a)); |
a3f97cbb | 6316 | break; |
3f76745e JM |
6317 | |
6318 | case dw_val_class_const: | |
25dd13ec JW |
6319 | /* ??? It would be slightly more efficient to use a scheme like is |
6320 | used for unsigned constants below, but gdb 4.x does not sign | |
6321 | extend. Gdb 5.x does sign extend. */ | |
2e4b9b8c | 6322 | dw2_asm_output_data_sleb128 (AT_int (a), "%s", name); |
a3f97cbb | 6323 | break; |
3f76745e JM |
6324 | |
6325 | case dw_val_class_unsigned_const: | |
2e4b9b8c RH |
6326 | dw2_asm_output_data (constant_size (AT_unsigned (a)), |
6327 | AT_unsigned (a), "%s", name); | |
a3f97cbb | 6328 | break; |
3f76745e JM |
6329 | |
6330 | case dw_val_class_long_long: | |
2e4b9b8c RH |
6331 | { |
6332 | unsigned HOST_WIDE_INT first, second; | |
3f76745e | 6333 | |
2ad9852d RK |
6334 | dw2_asm_output_data (1, |
6335 | 2 * HOST_BITS_PER_LONG / HOST_BITS_PER_CHAR, | |
c26fbbca | 6336 | "%s", name); |
556273e0 | 6337 | |
2e4b9b8c RH |
6338 | if (WORDS_BIG_ENDIAN) |
6339 | { | |
6340 | first = a->dw_attr_val.v.val_long_long.hi; | |
6341 | second = a->dw_attr_val.v.val_long_long.low; | |
6342 | } | |
6343 | else | |
6344 | { | |
6345 | first = a->dw_attr_val.v.val_long_long.low; | |
6346 | second = a->dw_attr_val.v.val_long_long.hi; | |
6347 | } | |
2ad9852d RK |
6348 | |
6349 | dw2_asm_output_data (HOST_BITS_PER_LONG / HOST_BITS_PER_CHAR, | |
2e4b9b8c | 6350 | first, "long long constant"); |
2ad9852d | 6351 | dw2_asm_output_data (HOST_BITS_PER_LONG / HOST_BITS_PER_CHAR, |
2e4b9b8c RH |
6352 | second, NULL); |
6353 | } | |
a3f97cbb | 6354 | break; |
3f76745e JM |
6355 | |
6356 | case dw_val_class_float: | |
c84e2712 | 6357 | { |
b3694847 | 6358 | unsigned int i; |
c84e2712 | 6359 | |
2e4b9b8c | 6360 | dw2_asm_output_data (1, a->dw_attr_val.v.val_float.length * 4, |
c26fbbca | 6361 | "%s", name); |
c84e2712 | 6362 | |
2ad9852d | 6363 | for (i = 0; i < a->dw_attr_val.v.val_float.length; i++) |
2e4b9b8c RH |
6364 | dw2_asm_output_data (4, a->dw_attr_val.v.val_float.array[i], |
6365 | "fp constant word %u", i); | |
556273e0 | 6366 | break; |
c84e2712 | 6367 | } |
3f76745e JM |
6368 | |
6369 | case dw_val_class_flag: | |
2e4b9b8c | 6370 | dw2_asm_output_data (1, AT_flag (a), "%s", name); |
a3f97cbb | 6371 | break; |
a20612aa | 6372 | |
c26fbbca | 6373 | case dw_val_class_loc_list: |
63e46568 DB |
6374 | { |
6375 | char *sym = AT_loc_list (a)->ll_symbol; | |
2ad9852d | 6376 | |
63e46568 | 6377 | if (sym == 0) |
173bf5be | 6378 | abort (); |
a20612aa RH |
6379 | dw2_asm_output_delta (DWARF_OFFSET_SIZE, sym, |
6380 | loc_section_label, "%s", name); | |
63e46568 DB |
6381 | } |
6382 | break; | |
a20612aa | 6383 | |
3f76745e | 6384 | case dw_val_class_die_ref: |
881c6935 | 6385 | if (AT_ref_external (a)) |
2e4b9b8c RH |
6386 | { |
6387 | char *sym = AT_ref (a)->die_symbol; | |
2ad9852d | 6388 | |
2e4b9b8c RH |
6389 | if (sym == 0) |
6390 | abort (); | |
6391 | dw2_asm_output_offset (DWARF2_ADDR_SIZE, sym, "%s", name); | |
6392 | } | |
3f4907a6 JM |
6393 | else if (AT_ref (a)->die_offset == 0) |
6394 | abort (); | |
881c6935 | 6395 | else |
2e4b9b8c RH |
6396 | dw2_asm_output_data (DWARF_OFFSET_SIZE, AT_ref (a)->die_offset, |
6397 | "%s", name); | |
a3f97cbb | 6398 | break; |
3f76745e JM |
6399 | |
6400 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
6401 | { |
6402 | char l1[20]; | |
2ad9852d | 6403 | |
2e4b9b8c RH |
6404 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_LABEL, |
6405 | a->dw_attr_val.v.val_fde_index * 2); | |
6406 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, l1, "%s", name); | |
a6ab3aad | 6407 | } |
a3f97cbb | 6408 | break; |
a3f97cbb | 6409 | |
3f76745e | 6410 | case dw_val_class_lbl_id: |
8e7fa2c8 | 6411 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, AT_lbl (a), "%s", name); |
3f76745e | 6412 | break; |
71dfc51f | 6413 | |
8b790721 | 6414 | case dw_val_class_lbl_offset: |
2e4b9b8c | 6415 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, AT_lbl (a), "%s", name); |
3f76745e | 6416 | break; |
a3f97cbb | 6417 | |
3f76745e | 6418 | case dw_val_class_str: |
9eb4015a JJ |
6419 | if (AT_string_form (a) == DW_FORM_strp) |
6420 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, | |
6421 | a->dw_attr_val.v.val_str->label, | |
a4cf1d85 | 6422 | "%s: \"%s\"", name, AT_string (a)); |
9eb4015a JJ |
6423 | else |
6424 | dw2_asm_output_nstring (AT_string (a), -1, "%s", name); | |
3f76745e | 6425 | break; |
b2932ae5 | 6426 | |
3f76745e JM |
6427 | default: |
6428 | abort (); | |
6429 | } | |
3f76745e | 6430 | } |
71dfc51f | 6431 | |
3f76745e JM |
6432 | for (c = die->die_child; c != NULL; c = c->die_sib) |
6433 | output_die (c); | |
71dfc51f | 6434 | |
2ad9852d | 6435 | /* Add null byte to terminate sibling list. */ |
3f76745e | 6436 | if (die->die_child != NULL) |
2ad9852d RK |
6437 | dw2_asm_output_data (1, 0, "end of children of DIE 0x%lx", |
6438 | die->die_offset); | |
3f76745e | 6439 | } |
71dfc51f | 6440 | |
3f76745e JM |
6441 | /* Output the compilation unit that appears at the beginning of the |
6442 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 6443 | |
3f76745e JM |
6444 | static void |
6445 | output_compilation_unit_header () | |
6446 | { | |
2e4b9b8c RH |
6447 | dw2_asm_output_data (DWARF_OFFSET_SIZE, next_die_offset - DWARF_OFFSET_SIZE, |
6448 | "Length of Compilation Unit Info"); | |
2e4b9b8c | 6449 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF version number"); |
2e4b9b8c RH |
6450 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, abbrev_section_label, |
6451 | "Offset Into Abbrev. Section"); | |
2e4b9b8c | 6452 | dw2_asm_output_data (1, DWARF2_ADDR_SIZE, "Pointer Size (in bytes)"); |
a3f97cbb JW |
6453 | } |
6454 | ||
881c6935 JM |
6455 | /* Output the compilation unit DIE and its children. */ |
6456 | ||
6457 | static void | |
6458 | output_comp_unit (die) | |
6459 | dw_die_ref die; | |
6460 | { | |
ce1cc601 | 6461 | const char *secname; |
881c6935 | 6462 | |
2ad9852d RK |
6463 | /* Even if there are no children of this DIE, we must output the information |
6464 | about the compilation unit. Otherwise, on an empty translation unit, we | |
6465 | will generate a present, but empty, .debug_info section. IRIX 6.5 `nm' | |
6466 | will then complain when examining the file. First mark all the DIEs in | |
6467 | this CU so we know which get local refs. */ | |
1bfb5f8f JM |
6468 | mark_dies (die); |
6469 | ||
6470 | build_abbrev_table (die); | |
6471 | ||
6d2f8887 | 6472 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
881c6935 JM |
6473 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; |
6474 | calc_die_sizes (die); | |
6475 | ||
881c6935 JM |
6476 | if (die->die_symbol) |
6477 | { | |
ce1cc601 | 6478 | char *tmp = (char *) alloca (strlen (die->die_symbol) + 24); |
2ad9852d | 6479 | |
ce1cc601 KG |
6480 | sprintf (tmp, ".gnu.linkonce.wi.%s", die->die_symbol); |
6481 | secname = tmp; | |
881c6935 JM |
6482 | die->die_symbol = NULL; |
6483 | } | |
6484 | else | |
ce1cc601 | 6485 | secname = (const char *) DEBUG_INFO_SECTION; |
881c6935 JM |
6486 | |
6487 | /* Output debugging information. */ | |
715bdd29 | 6488 | named_section_flags (secname, SECTION_DEBUG); |
881c6935 JM |
6489 | output_compilation_unit_header (); |
6490 | output_die (die); | |
6491 | ||
1bfb5f8f JM |
6492 | /* Leave the marks on the main CU, so we can check them in |
6493 | output_pubnames. */ | |
881c6935 | 6494 | if (die->die_symbol) |
1bfb5f8f | 6495 | unmark_dies (die); |
881c6935 JM |
6496 | } |
6497 | ||
7afff7cf NB |
6498 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The |
6499 | output of lang_hooks.decl_printable_name for C++ looks like | |
6500 | "A::f(int)". Let's drop the argument list, and maybe the scope. */ | |
a1d7ffe3 | 6501 | |
d560ee52 | 6502 | static const char * |
a1d7ffe3 JM |
6503 | dwarf2_name (decl, scope) |
6504 | tree decl; | |
6505 | int scope; | |
6506 | { | |
7afff7cf | 6507 | return (*lang_hooks.decl_printable_name) (decl, scope ? 1 : 0); |
a1d7ffe3 JM |
6508 | } |
6509 | ||
d291dd49 | 6510 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 6511 | |
d291dd49 JM |
6512 | static void |
6513 | add_pubname (decl, die) | |
6514 | tree decl; | |
6515 | dw_die_ref die; | |
6516 | { | |
6517 | pubname_ref p; | |
6518 | ||
6519 | if (! TREE_PUBLIC (decl)) | |
6520 | return; | |
6521 | ||
6522 | if (pubname_table_in_use == pubname_table_allocated) | |
6523 | { | |
6524 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
2ad9852d RK |
6525 | pubname_table |
6526 | = (pubname_ref) xrealloc (pubname_table, | |
6527 | (pubname_table_allocated | |
6528 | * sizeof (pubname_entry))); | |
d291dd49 | 6529 | } |
71dfc51f | 6530 | |
d291dd49 JM |
6531 | p = &pubname_table[pubname_table_in_use++]; |
6532 | p->die = die; | |
a1d7ffe3 | 6533 | p->name = xstrdup (dwarf2_name (decl, 1)); |
d291dd49 JM |
6534 | } |
6535 | ||
a3f97cbb JW |
6536 | /* Output the public names table used to speed up access to externally |
6537 | visible names. For now, only generate entries for externally | |
6538 | visible procedures. */ | |
71dfc51f | 6539 | |
a3f97cbb JW |
6540 | static void |
6541 | output_pubnames () | |
6542 | { | |
b3694847 SS |
6543 | unsigned i; |
6544 | unsigned long pubnames_length = size_of_pubnames (); | |
71dfc51f | 6545 | |
2e4b9b8c RH |
6546 | dw2_asm_output_data (DWARF_OFFSET_SIZE, pubnames_length, |
6547 | "Length of Public Names Info"); | |
2e4b9b8c | 6548 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); |
2e4b9b8c RH |
6549 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, debug_info_section_label, |
6550 | "Offset of Compilation Unit Info"); | |
2e4b9b8c RH |
6551 | dw2_asm_output_data (DWARF_OFFSET_SIZE, next_die_offset, |
6552 | "Compilation Unit Length"); | |
71dfc51f | 6553 | |
2ad9852d | 6554 | for (i = 0; i < pubname_table_in_use; i++) |
a3f97cbb | 6555 | { |
b3694847 | 6556 | pubname_ref pub = &pubname_table[i]; |
71dfc51f | 6557 | |
881c6935 | 6558 | /* We shouldn't see pubnames for DIEs outside of the main CU. */ |
1bfb5f8f | 6559 | if (pub->die->die_mark == 0) |
881c6935 JM |
6560 | abort (); |
6561 | ||
2e4b9b8c RH |
6562 | dw2_asm_output_data (DWARF_OFFSET_SIZE, pub->die->die_offset, |
6563 | "DIE offset"); | |
71dfc51f | 6564 | |
2e4b9b8c | 6565 | dw2_asm_output_nstring (pub->name, -1, "external name"); |
a3f97cbb | 6566 | } |
71dfc51f | 6567 | |
2e4b9b8c | 6568 | dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, NULL); |
a3f97cbb JW |
6569 | } |
6570 | ||
d291dd49 | 6571 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 6572 | |
d291dd49 JM |
6573 | static void |
6574 | add_arange (decl, die) | |
6575 | tree decl; | |
6576 | dw_die_ref die; | |
6577 | { | |
6578 | if (! DECL_SECTION_NAME (decl)) | |
6579 | return; | |
6580 | ||
6581 | if (arange_table_in_use == arange_table_allocated) | |
6582 | { | |
6583 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
a20612aa RH |
6584 | arange_table = (dw_die_ref *) |
6585 | xrealloc (arange_table, arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 6586 | } |
71dfc51f | 6587 | |
d291dd49 JM |
6588 | arange_table[arange_table_in_use++] = die; |
6589 | } | |
6590 | ||
a3f97cbb JW |
6591 | /* Output the information that goes into the .debug_aranges table. |
6592 | Namely, define the beginning and ending address range of the | |
6593 | text section generated for this compilation unit. */ | |
71dfc51f | 6594 | |
a3f97cbb JW |
6595 | static void |
6596 | output_aranges () | |
6597 | { | |
b3694847 SS |
6598 | unsigned i; |
6599 | unsigned long aranges_length = size_of_aranges (); | |
71dfc51f | 6600 | |
2e4b9b8c RH |
6601 | dw2_asm_output_data (DWARF_OFFSET_SIZE, aranges_length, |
6602 | "Length of Address Ranges Info"); | |
2e4b9b8c | 6603 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); |
2e4b9b8c RH |
6604 | dw2_asm_output_offset (DWARF_OFFSET_SIZE, debug_info_section_label, |
6605 | "Offset of Compilation Unit Info"); | |
2e4b9b8c | 6606 | dw2_asm_output_data (1, DWARF2_ADDR_SIZE, "Size of Address"); |
2e4b9b8c | 6607 | dw2_asm_output_data (1, 0, "Size of Segment Descriptor"); |
71dfc51f | 6608 | |
262b6384 SC |
6609 | /* We need to align to twice the pointer size here. */ |
6610 | if (DWARF_ARANGES_PAD_SIZE) | |
6611 | { | |
2e4b9b8c RH |
6612 | /* Pad using a 2 byte words so that padding is correct for any |
6613 | pointer size. */ | |
6614 | dw2_asm_output_data (2, 0, "Pad to %d byte boundary", | |
6615 | 2 * DWARF2_ADDR_SIZE); | |
770ca8c6 | 6616 | for (i = 2; i < (unsigned) DWARF_ARANGES_PAD_SIZE; i += 2) |
2e4b9b8c | 6617 | dw2_asm_output_data (2, 0, NULL); |
262b6384 | 6618 | } |
71dfc51f | 6619 | |
8e7fa2c8 | 6620 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, text_section_label, "Address"); |
2e4b9b8c RH |
6621 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, text_end_label, |
6622 | text_section_label, "Length"); | |
71dfc51f | 6623 | |
2ad9852d | 6624 | for (i = 0; i < arange_table_in_use; i++) |
d291dd49 | 6625 | { |
e689ae67 | 6626 | dw_die_ref die = arange_table[i]; |
71dfc51f | 6627 | |
881c6935 | 6628 | /* We shouldn't see aranges for DIEs outside of the main CU. */ |
1bfb5f8f | 6629 | if (die->die_mark == 0) |
881c6935 JM |
6630 | abort (); |
6631 | ||
e689ae67 | 6632 | if (die->die_tag == DW_TAG_subprogram) |
2e4b9b8c | 6633 | { |
8e7fa2c8 | 6634 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, get_AT_low_pc (die), |
173bf5be | 6635 | "Address"); |
2e4b9b8c RH |
6636 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, get_AT_hi_pc (die), |
6637 | get_AT_low_pc (die), "Length"); | |
6638 | } | |
d291dd49 | 6639 | else |
a1d7ffe3 | 6640 | { |
e689ae67 JM |
6641 | /* A static variable; extract the symbol from DW_AT_location. |
6642 | Note that this code isn't currently hit, as we only emit | |
6643 | aranges for functions (jason 9/23/99). */ | |
e689ae67 JM |
6644 | dw_attr_ref a = get_AT (die, DW_AT_location); |
6645 | dw_loc_descr_ref loc; | |
2ad9852d | 6646 | |
a96c67ec | 6647 | if (! a || AT_class (a) != dw_val_class_loc) |
e689ae67 JM |
6648 | abort (); |
6649 | ||
a96c67ec | 6650 | loc = AT_loc (a); |
e689ae67 JM |
6651 | if (loc->dw_loc_opc != DW_OP_addr) |
6652 | abort (); | |
6653 | ||
2e4b9b8c RH |
6654 | dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, |
6655 | loc->dw_loc_oprnd1.v.val_addr, "Address"); | |
6656 | dw2_asm_output_data (DWARF2_ADDR_SIZE, | |
6657 | get_AT_unsigned (die, DW_AT_byte_size), | |
6658 | "Length"); | |
a1d7ffe3 | 6659 | } |
d291dd49 | 6660 | } |
71dfc51f | 6661 | |
a3f97cbb | 6662 | /* Output the terminator words. */ |
2e4b9b8c RH |
6663 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); |
6664 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); | |
a3f97cbb JW |
6665 | } |
6666 | ||
a20612aa RH |
6667 | /* Add a new entry to .debug_ranges. Return the offset at which it |
6668 | was placed. */ | |
6669 | ||
6670 | static unsigned int | |
6671 | add_ranges (block) | |
6672 | tree block; | |
6673 | { | |
6674 | unsigned int in_use = ranges_table_in_use; | |
6675 | ||
6676 | if (in_use == ranges_table_allocated) | |
6677 | { | |
6678 | ranges_table_allocated += RANGES_TABLE_INCREMENT; | |
6679 | ranges_table = (dw_ranges_ref) | |
6680 | xrealloc (ranges_table, (ranges_table_allocated | |
6681 | * sizeof (struct dw_ranges_struct))); | |
6682 | } | |
6683 | ||
6684 | ranges_table[in_use].block_num = (block ? BLOCK_NUMBER (block) : 0); | |
6685 | ranges_table_in_use = in_use + 1; | |
6686 | ||
6687 | return in_use * 2 * DWARF2_ADDR_SIZE; | |
6688 | } | |
6689 | ||
6690 | static void | |
6691 | output_ranges () | |
6692 | { | |
b3694847 | 6693 | unsigned i; |
83182544 | 6694 | static const char *const start_fmt = "Offset 0x%x"; |
a20612aa RH |
6695 | const char *fmt = start_fmt; |
6696 | ||
2ad9852d | 6697 | for (i = 0; i < ranges_table_in_use; i++) |
a20612aa RH |
6698 | { |
6699 | int block_num = ranges_table[i].block_num; | |
6700 | ||
6701 | if (block_num) | |
6702 | { | |
6703 | char blabel[MAX_ARTIFICIAL_LABEL_BYTES]; | |
6704 | char elabel[MAX_ARTIFICIAL_LABEL_BYTES]; | |
6705 | ||
6706 | ASM_GENERATE_INTERNAL_LABEL (blabel, BLOCK_BEGIN_LABEL, block_num); | |
6707 | ASM_GENERATE_INTERNAL_LABEL (elabel, BLOCK_END_LABEL, block_num); | |
6708 | ||
6709 | /* If all code is in the text section, then the compilation | |
6710 | unit base address defaults to DW_AT_low_pc, which is the | |
6711 | base of the text section. */ | |
6712 | if (separate_line_info_table_in_use == 0) | |
6713 | { | |
6714 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, blabel, | |
6715 | text_section_label, | |
6716 | fmt, i * 2 * DWARF2_ADDR_SIZE); | |
6717 | dw2_asm_output_delta (DWARF2_ADDR_SIZE, elabel, | |
6718 | text_section_label, NULL); | |
6719 | } | |
2ad9852d | 6720 | |
a20612aa RH |
6721 | /* Otherwise, we add a DW_AT_entry_pc attribute to force the |
6722 | compilation unit base address to zero, which allows us to | |
6723 | use absolute addresses, and not worry about whether the | |
6724 | target supports cross-section arithmetic. */ | |
6725 | else | |
6726 | { | |
6727 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, blabel, | |
6728 | fmt, i * 2 * DWARF2_ADDR_SIZE); | |
6729 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, elabel, NULL); | |
6730 | } | |
6731 | ||
6732 | fmt = NULL; | |
6733 | } | |
6734 | else | |
6735 | { | |
6736 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); | |
6737 | dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL); | |
6738 | fmt = start_fmt; | |
6739 | } | |
6740 | } | |
6741 | } | |
0b34cf1e UD |
6742 | |
6743 | /* Data structure containing information about input files. */ | |
6744 | struct file_info | |
6745 | { | |
6746 | char *path; /* Complete file name. */ | |
6747 | char *fname; /* File name part. */ | |
6748 | int length; /* Length of entire string. */ | |
6749 | int file_idx; /* Index in input file table. */ | |
6750 | int dir_idx; /* Index in directory table. */ | |
6751 | }; | |
6752 | ||
6753 | /* Data structure containing information about directories with source | |
6754 | files. */ | |
6755 | struct dir_info | |
6756 | { | |
6757 | char *path; /* Path including directory name. */ | |
6758 | int length; /* Path length. */ | |
6759 | int prefix; /* Index of directory entry which is a prefix. */ | |
0b34cf1e UD |
6760 | int count; /* Number of files in this directory. */ |
6761 | int dir_idx; /* Index of directory used as base. */ | |
6762 | int used; /* Used in the end? */ | |
6763 | }; | |
6764 | ||
6765 | /* Callback function for file_info comparison. We sort by looking at | |
6766 | the directories in the path. */ | |
356b0698 | 6767 | |
0b34cf1e UD |
6768 | static int |
6769 | file_info_cmp (p1, p2) | |
6770 | const void *p1; | |
6771 | const void *p2; | |
6772 | { | |
6773 | const struct file_info *s1 = p1; | |
6774 | const struct file_info *s2 = p2; | |
6775 | unsigned char *cp1; | |
6776 | unsigned char *cp2; | |
6777 | ||
356b0698 RK |
6778 | /* Take care of file names without directories. We need to make sure that |
6779 | we return consistent values to qsort since some will get confused if | |
6780 | we return the same value when identical operands are passed in opposite | |
6781 | orders. So if neither has a directory, return 0 and otherwise return | |
6782 | 1 or -1 depending on which one has the directory. */ | |
6783 | if ((s1->path == s1->fname || s2->path == s2->fname)) | |
6784 | return (s2->path == s2->fname) - (s1->path == s1->fname); | |
0b34cf1e UD |
6785 | |
6786 | cp1 = (unsigned char *) s1->path; | |
6787 | cp2 = (unsigned char *) s2->path; | |
6788 | ||
6789 | while (1) | |
6790 | { | |
6791 | ++cp1; | |
6792 | ++cp2; | |
356b0698 RK |
6793 | /* Reached the end of the first path? If so, handle like above. */ |
6794 | if ((cp1 == (unsigned char *) s1->fname) | |
6795 | || (cp2 == (unsigned char *) s2->fname)) | |
6796 | return ((cp2 == (unsigned char *) s2->fname) | |
6797 | - (cp1 == (unsigned char *) s1->fname)); | |
0b34cf1e UD |
6798 | |
6799 | /* Character of current path component the same? */ | |
356b0698 | 6800 | else if (*cp1 != *cp2) |
0b34cf1e UD |
6801 | return *cp1 - *cp2; |
6802 | } | |
6803 | } | |
6804 | ||
6805 | /* Output the directory table and the file name table. We try to minimize | |
6806 | the total amount of memory needed. A heuristic is used to avoid large | |
6807 | slowdowns with many input files. */ | |
2ad9852d | 6808 | |
0b34cf1e UD |
6809 | static void |
6810 | output_file_names () | |
6811 | { | |
6812 | struct file_info *files; | |
6813 | struct dir_info *dirs; | |
6814 | int *saved; | |
6815 | int *savehere; | |
6816 | int *backmap; | |
6817 | int ndirs; | |
6818 | int idx_offset; | |
6819 | int i; | |
6820 | int idx; | |
6821 | ||
6822 | /* Allocate the various arrays we need. */ | |
981975b6 | 6823 | files = (struct file_info *) alloca (file_table.in_use |
0b34cf1e | 6824 | * sizeof (struct file_info)); |
981975b6 | 6825 | dirs = (struct dir_info *) alloca (file_table.in_use |
0b34cf1e UD |
6826 | * sizeof (struct dir_info)); |
6827 | ||
6828 | /* Sort the file names. */ | |
2ad9852d | 6829 | for (i = 1; i < (int) file_table.in_use; i++) |
0b34cf1e UD |
6830 | { |
6831 | char *f; | |
6832 | ||
6833 | /* Skip all leading "./". */ | |
981975b6 | 6834 | f = file_table.table[i]; |
0b34cf1e UD |
6835 | while (f[0] == '.' && f[1] == '/') |
6836 | f += 2; | |
6837 | ||
6838 | /* Create a new array entry. */ | |
6839 | files[i].path = f; | |
6840 | files[i].length = strlen (f); | |
6841 | files[i].file_idx = i; | |
6842 | ||
6843 | /* Search for the file name part. */ | |
6844 | f = strrchr (f, '/'); | |
6845 | files[i].fname = f == NULL ? files[i].path : f + 1; | |
6846 | } | |
2ad9852d | 6847 | |
981975b6 | 6848 | qsort (files + 1, file_table.in_use - 1, sizeof (files[0]), file_info_cmp); |
0b34cf1e UD |
6849 | |
6850 | /* Find all the different directories used. */ | |
6851 | dirs[0].path = files[1].path; | |
6852 | dirs[0].length = files[1].fname - files[1].path; | |
6853 | dirs[0].prefix = -1; | |
0b34cf1e UD |
6854 | dirs[0].count = 1; |
6855 | dirs[0].dir_idx = 0; | |
6856 | dirs[0].used = 0; | |
6857 | files[1].dir_idx = 0; | |
6858 | ndirs = 1; | |
6859 | ||
2ad9852d | 6860 | for (i = 2; i < (int) file_table.in_use; i++) |
0b34cf1e UD |
6861 | if (files[i].fname - files[i].path == dirs[ndirs - 1].length |
6862 | && memcmp (dirs[ndirs - 1].path, files[i].path, | |
6863 | dirs[ndirs - 1].length) == 0) | |
6864 | { | |
6865 | /* Same directory as last entry. */ | |
6866 | files[i].dir_idx = ndirs - 1; | |
0b34cf1e UD |
6867 | ++dirs[ndirs - 1].count; |
6868 | } | |
6869 | else | |
6870 | { | |
6871 | int j; | |
6872 | ||
6873 | /* This is a new directory. */ | |
6874 | dirs[ndirs].path = files[i].path; | |
6875 | dirs[ndirs].length = files[i].fname - files[i].path; | |
0b34cf1e UD |
6876 | dirs[ndirs].count = 1; |
6877 | dirs[ndirs].dir_idx = ndirs; | |
6878 | dirs[ndirs].used = 0; | |
6879 | files[i].dir_idx = ndirs; | |
6880 | ||
6881 | /* Search for a prefix. */ | |
981975b6 | 6882 | dirs[ndirs].prefix = -1; |
2ad9852d | 6883 | for (j = 0; j < ndirs; j++) |
981975b6 RH |
6884 | if (dirs[j].length < dirs[ndirs].length |
6885 | && dirs[j].length > 1 | |
6886 | && (dirs[ndirs].prefix == -1 | |
6887 | || dirs[j].length > dirs[dirs[ndirs].prefix].length) | |
6888 | && memcmp (dirs[j].path, dirs[ndirs].path, dirs[j].length) == 0) | |
6889 | dirs[ndirs].prefix = j; | |
0b34cf1e UD |
6890 | |
6891 | ++ndirs; | |
6892 | } | |
6893 | ||
2ad9852d RK |
6894 | /* Now to the actual work. We have to find a subset of the directories which |
6895 | allow expressing the file name using references to the directory table | |
6896 | with the least amount of characters. We do not do an exhaustive search | |
6897 | where we would have to check out every combination of every single | |
6898 | possible prefix. Instead we use a heuristic which provides nearly optimal | |
6899 | results in most cases and never is much off. */ | |
0b34cf1e UD |
6900 | saved = (int *) alloca (ndirs * sizeof (int)); |
6901 | savehere = (int *) alloca (ndirs * sizeof (int)); | |
6902 | ||
6903 | memset (saved, '\0', ndirs * sizeof (saved[0])); | |
2ad9852d | 6904 | for (i = 0; i < ndirs; i++) |
0b34cf1e UD |
6905 | { |
6906 | int j; | |
6907 | int total; | |
6908 | ||
2ad9852d RK |
6909 | /* We can always save some space for the current directory. But this |
6910 | does not mean it will be enough to justify adding the directory. */ | |
0b34cf1e UD |
6911 | savehere[i] = dirs[i].length; |
6912 | total = (savehere[i] - saved[i]) * dirs[i].count; | |
6913 | ||
2ad9852d | 6914 | for (j = i + 1; j < ndirs; j++) |
0b34cf1e UD |
6915 | { |
6916 | savehere[j] = 0; | |
0b34cf1e UD |
6917 | if (saved[j] < dirs[i].length) |
6918 | { | |
6919 | /* Determine whether the dirs[i] path is a prefix of the | |
6920 | dirs[j] path. */ | |
6921 | int k; | |
6922 | ||
981975b6 RH |
6923 | k = dirs[j].prefix; |
6924 | while (k != -1 && k != i) | |
6925 | k = dirs[k].prefix; | |
6926 | ||
6927 | if (k == i) | |
6928 | { | |
6929 | /* Yes it is. We can possibly safe some memory but | |
6930 | writing the filenames in dirs[j] relative to | |
6931 | dirs[i]. */ | |
6932 | savehere[j] = dirs[i].length; | |
6933 | total += (savehere[j] - saved[j]) * dirs[j].count; | |
6934 | } | |
0b34cf1e UD |
6935 | } |
6936 | } | |
6937 | ||
6938 | /* Check whether we can safe enough to justify adding the dirs[i] | |
6939 | directory. */ | |
6940 | if (total > dirs[i].length + 1) | |
6941 | { | |
981975b6 | 6942 | /* It's worthwhile adding. */ |
c26fbbca | 6943 | for (j = i; j < ndirs; j++) |
0b34cf1e UD |
6944 | if (savehere[j] > 0) |
6945 | { | |
6946 | /* Remember how much we saved for this directory so far. */ | |
6947 | saved[j] = savehere[j]; | |
6948 | ||
6949 | /* Remember the prefix directory. */ | |
6950 | dirs[j].dir_idx = i; | |
6951 | } | |
6952 | } | |
6953 | } | |
6954 | ||
2ad9852d RK |
6955 | /* We have to emit them in the order they appear in the file_table array |
6956 | since the index is used in the debug info generation. To do this | |
6957 | efficiently we generate a back-mapping of the indices first. */ | |
981975b6 | 6958 | backmap = (int *) alloca (file_table.in_use * sizeof (int)); |
2ad9852d | 6959 | for (i = 1; i < (int) file_table.in_use; i++) |
0b34cf1e UD |
6960 | { |
6961 | backmap[files[i].file_idx] = i; | |
2ad9852d | 6962 | |
0b34cf1e UD |
6963 | /* Mark this directory as used. */ |
6964 | dirs[dirs[files[i].dir_idx].dir_idx].used = 1; | |
6965 | } | |
6966 | ||
2ad9852d RK |
6967 | /* That was it. We are ready to emit the information. First emit the |
6968 | directory name table. We have to make sure the first actually emitted | |
6969 | directory name has index one; zero is reserved for the current working | |
6970 | directory. Make sure we do not confuse these indices with the one for the | |
6971 | constructed table (even though most of the time they are identical). */ | |
0b34cf1e | 6972 | idx = 1; |
e57cabac | 6973 | idx_offset = dirs[0].length > 0 ? 1 : 0; |
2ad9852d | 6974 | for (i = 1 - idx_offset; i < ndirs; i++) |
0b34cf1e UD |
6975 | if (dirs[i].used != 0) |
6976 | { | |
6977 | dirs[i].used = idx++; | |
2e4b9b8c RH |
6978 | dw2_asm_output_nstring (dirs[i].path, dirs[i].length - 1, |
6979 | "Directory Entry: 0x%x", dirs[i].used); | |
0b34cf1e | 6980 | } |
2ad9852d | 6981 | |
2e4b9b8c RH |
6982 | dw2_asm_output_data (1, 0, "End directory table"); |
6983 | ||
0b34cf1e UD |
6984 | /* Correct the index for the current working directory entry if it |
6985 | exists. */ | |
6986 | if (idx_offset == 0) | |
6987 | dirs[0].used = 0; | |
0b34cf1e UD |
6988 | |
6989 | /* Now write all the file names. */ | |
2ad9852d | 6990 | for (i = 1; i < (int) file_table.in_use; i++) |
0b34cf1e UD |
6991 | { |
6992 | int file_idx = backmap[i]; | |
6993 | int dir_idx = dirs[files[file_idx].dir_idx].dir_idx; | |
6994 | ||
2e4b9b8c RH |
6995 | dw2_asm_output_nstring (files[file_idx].path + dirs[dir_idx].length, -1, |
6996 | "File Entry: 0x%x", i); | |
0b34cf1e UD |
6997 | |
6998 | /* Include directory index. */ | |
2e4b9b8c | 6999 | dw2_asm_output_data_uleb128 (dirs[dir_idx].used, NULL); |
0b34cf1e UD |
7000 | |
7001 | /* Modification time. */ | |
2e4b9b8c | 7002 | dw2_asm_output_data_uleb128 (0, NULL); |
0b34cf1e UD |
7003 | |
7004 | /* File length in bytes. */ | |
2e4b9b8c | 7005 | dw2_asm_output_data_uleb128 (0, NULL); |
0b34cf1e | 7006 | } |
2ad9852d | 7007 | |
2e4b9b8c | 7008 | dw2_asm_output_data (1, 0, "End file name table"); |
0b34cf1e UD |
7009 | } |
7010 | ||
7011 | ||
a3f97cbb | 7012 | /* Output the source line number correspondence information. This |
14a774a9 | 7013 | information goes into the .debug_line section. */ |
71dfc51f | 7014 | |
a3f97cbb JW |
7015 | static void |
7016 | output_line_info () | |
7017 | { | |
981975b6 | 7018 | char l1[20], l2[20], p1[20], p2[20]; |
a3f97cbb JW |
7019 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
7020 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
b3694847 SS |
7021 | unsigned opc; |
7022 | unsigned n_op_args; | |
7023 | unsigned long lt_index; | |
7024 | unsigned long current_line; | |
7025 | long line_offset; | |
7026 | long line_delta; | |
7027 | unsigned long current_file; | |
7028 | unsigned long function; | |
71dfc51f | 7029 | |
2e4b9b8c RH |
7030 | ASM_GENERATE_INTERNAL_LABEL (l1, LINE_NUMBER_BEGIN_LABEL, 0); |
7031 | ASM_GENERATE_INTERNAL_LABEL (l2, LINE_NUMBER_END_LABEL, 0); | |
981975b6 RH |
7032 | ASM_GENERATE_INTERNAL_LABEL (p1, LN_PROLOG_AS_LABEL, 0); |
7033 | ASM_GENERATE_INTERNAL_LABEL (p2, LN_PROLOG_END_LABEL, 0); | |
71dfc51f | 7034 | |
2e4b9b8c RH |
7035 | dw2_asm_output_delta (DWARF_OFFSET_SIZE, l2, l1, |
7036 | "Length of Source Line Info"); | |
7037 | ASM_OUTPUT_LABEL (asm_out_file, l1); | |
71dfc51f | 7038 | |
2e4b9b8c | 7039 | dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); |
981975b6 RH |
7040 | dw2_asm_output_delta (DWARF_OFFSET_SIZE, p2, p1, "Prolog Length"); |
7041 | ASM_OUTPUT_LABEL (asm_out_file, p1); | |
71dfc51f | 7042 | |
c1a046e5 TT |
7043 | /* Define the architecture-dependent minimum instruction length (in |
7044 | bytes). In this implementation of DWARF, this field is used for | |
7045 | information purposes only. Since GCC generates assembly language, | |
7046 | we have no a priori knowledge of how many instruction bytes are | |
7047 | generated for each source line, and therefore can use only the | |
7048 | DW_LNE_set_address and DW_LNS_fixed_advance_pc line information | |
7049 | commands. Accordingly, we fix this as `1', which is "correct | |
7050 | enough" for all architectures, and don't let the target override. */ | |
7051 | dw2_asm_output_data (1, 1, | |
2e4b9b8c | 7052 | "Minimum Instruction Length"); |
c1a046e5 | 7053 | |
2e4b9b8c RH |
7054 | dw2_asm_output_data (1, DWARF_LINE_DEFAULT_IS_STMT_START, |
7055 | "Default is_stmt_start flag"); | |
2e4b9b8c RH |
7056 | dw2_asm_output_data (1, DWARF_LINE_BASE, |
7057 | "Line Base Value (Special Opcodes)"); | |
2e4b9b8c RH |
7058 | dw2_asm_output_data (1, DWARF_LINE_RANGE, |
7059 | "Line Range Value (Special Opcodes)"); | |
2e4b9b8c RH |
7060 | dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE, |
7061 | "Special Opcode Base"); | |
71dfc51f | 7062 | |
2ad9852d | 7063 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; opc++) |
a3f97cbb JW |
7064 | { |
7065 | switch (opc) | |
7066 | { | |
7067 | case DW_LNS_advance_pc: | |
7068 | case DW_LNS_advance_line: | |
7069 | case DW_LNS_set_file: | |
7070 | case DW_LNS_set_column: | |
7071 | case DW_LNS_fixed_advance_pc: | |
7072 | n_op_args = 1; | |
7073 | break; | |
7074 | default: | |
7075 | n_op_args = 0; | |
7076 | break; | |
7077 | } | |
2e4b9b8c RH |
7078 | |
7079 | dw2_asm_output_data (1, n_op_args, "opcode: 0x%x has %d args", | |
7080 | opc, n_op_args); | |
a3f97cbb | 7081 | } |
71dfc51f | 7082 | |
0b34cf1e UD |
7083 | /* Write out the information about the files we use. */ |
7084 | output_file_names (); | |
981975b6 | 7085 | ASM_OUTPUT_LABEL (asm_out_file, p2); |
a3f97cbb | 7086 | |
2f22d404 JM |
7087 | /* We used to set the address register to the first location in the text |
7088 | section here, but that didn't accomplish anything since we already | |
7089 | have a line note for the opening brace of the first function. */ | |
a3f97cbb JW |
7090 | |
7091 | /* Generate the line number to PC correspondence table, encoded as | |
7092 | a series of state machine operations. */ | |
7093 | current_file = 1; | |
7094 | current_line = 1; | |
8b790721 | 7095 | strcpy (prev_line_label, text_section_label); |
a3f97cbb JW |
7096 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
7097 | { | |
b3694847 | 7098 | dw_line_info_ref line_info = &line_info_table[lt_index]; |
2f22d404 | 7099 | |
10a11b75 JM |
7100 | #if 0 |
7101 | /* Disable this optimization for now; GDB wants to see two line notes | |
7102 | at the beginning of a function so it can find the end of the | |
7103 | prologue. */ | |
7104 | ||
2f22d404 JM |
7105 | /* Don't emit anything for redundant notes. Just updating the |
7106 | address doesn't accomplish anything, because we already assume | |
7107 | that anything after the last address is this line. */ | |
7108 | if (line_info->dw_line_num == current_line | |
7109 | && line_info->dw_file_num == current_file) | |
7110 | continue; | |
10a11b75 | 7111 | #endif |
71dfc51f | 7112 | |
2e4b9b8c RH |
7113 | /* Emit debug info for the address of the current line. |
7114 | ||
7115 | Unfortunately, we have little choice here currently, and must always | |
2ad9852d | 7116 | use the most general form. GCC does not know the address delta |
2e4b9b8c RH |
7117 | itself, so we can't use DW_LNS_advance_pc. Many ports do have length |
7118 | attributes which will give an upper bound on the address range. We | |
7119 | could perhaps use length attributes to determine when it is safe to | |
7120 | use DW_LNS_fixed_advance_pc. */ | |
7121 | ||
5c90448c | 7122 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
7123 | if (0) |
7124 | { | |
7125 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
2e4b9b8c RH |
7126 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7127 | "DW_LNS_fixed_advance_pc"); | |
7128 | dw2_asm_output_delta (2, line_label, prev_line_label, NULL); | |
f19a6894 JW |
7129 | } |
7130 | else | |
7131 | { | |
a1a4189d JB |
7132 | /* This can handle any delta. This takes |
7133 | 4+DWARF2_ADDR_SIZE bytes. */ | |
2e4b9b8c RH |
7134 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7135 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7136 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7137 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
f19a6894 | 7138 | } |
2ad9852d | 7139 | |
f19a6894 JW |
7140 | strcpy (prev_line_label, line_label); |
7141 | ||
7142 | /* Emit debug info for the source file of the current line, if | |
7143 | different from the previous line. */ | |
a3f97cbb JW |
7144 | if (line_info->dw_file_num != current_file) |
7145 | { | |
7146 | current_file = line_info->dw_file_num; | |
2e4b9b8c RH |
7147 | dw2_asm_output_data (1, DW_LNS_set_file, "DW_LNS_set_file"); |
7148 | dw2_asm_output_data_uleb128 (current_file, "(\"%s\")", | |
981975b6 | 7149 | file_table.table[current_file]); |
a3f97cbb | 7150 | } |
71dfc51f | 7151 | |
f19a6894 JW |
7152 | /* Emit debug info for the current line number, choosing the encoding |
7153 | that uses the least amount of space. */ | |
2f22d404 | 7154 | if (line_info->dw_line_num != current_line) |
a3f97cbb | 7155 | { |
2f22d404 JM |
7156 | line_offset = line_info->dw_line_num - current_line; |
7157 | line_delta = line_offset - DWARF_LINE_BASE; | |
7158 | current_line = line_info->dw_line_num; | |
7159 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
2ad9852d RK |
7160 | /* This can handle deltas from -10 to 234, using the current |
7161 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
7162 | takes 1 byte. */ | |
7163 | dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE + line_delta, | |
7164 | "line %lu", current_line); | |
2f22d404 JM |
7165 | else |
7166 | { | |
7167 | /* This can handle any delta. This takes at least 4 bytes, | |
7168 | depending on the value being encoded. */ | |
2e4b9b8c RH |
7169 | dw2_asm_output_data (1, DW_LNS_advance_line, |
7170 | "advance to line %lu", current_line); | |
7171 | dw2_asm_output_data_sleb128 (line_offset, NULL); | |
7172 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); | |
2f22d404 | 7173 | } |
a94dbf2c JM |
7174 | } |
7175 | else | |
2ad9852d RK |
7176 | /* We still need to start a new row, so output a copy insn. */ |
7177 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); | |
a3f97cbb JW |
7178 | } |
7179 | ||
f19a6894 JW |
7180 | /* Emit debug info for the address of the end of the function. */ |
7181 | if (0) | |
7182 | { | |
2e4b9b8c RH |
7183 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7184 | "DW_LNS_fixed_advance_pc"); | |
7185 | dw2_asm_output_delta (2, text_end_label, prev_line_label, NULL); | |
f19a6894 JW |
7186 | } |
7187 | else | |
7188 | { | |
2e4b9b8c RH |
7189 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7190 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7191 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7192 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, text_end_label, NULL); |
f19a6894 | 7193 | } |
bdb669cb | 7194 | |
2e4b9b8c RH |
7195 | dw2_asm_output_data (1, 0, "DW_LNE_end_sequence"); |
7196 | dw2_asm_output_data_uleb128 (1, NULL); | |
7197 | dw2_asm_output_data (1, DW_LNE_end_sequence, NULL); | |
e90b62db JM |
7198 | |
7199 | function = 0; | |
7200 | current_file = 1; | |
7201 | current_line = 1; | |
556273e0 | 7202 | for (lt_index = 0; lt_index < separate_line_info_table_in_use;) |
e90b62db | 7203 | { |
b3694847 | 7204 | dw_separate_line_info_ref line_info |
e90b62db | 7205 | = &separate_line_info_table[lt_index]; |
71dfc51f | 7206 | |
10a11b75 | 7207 | #if 0 |
2f22d404 JM |
7208 | /* Don't emit anything for redundant notes. */ |
7209 | if (line_info->dw_line_num == current_line | |
7210 | && line_info->dw_file_num == current_file | |
7211 | && line_info->function == function) | |
7212 | goto cont; | |
10a11b75 | 7213 | #endif |
2f22d404 | 7214 | |
f19a6894 JW |
7215 | /* Emit debug info for the address of the current line. If this is |
7216 | a new function, or the first line of a function, then we need | |
7217 | to handle it differently. */ | |
5c90448c JM |
7218 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
7219 | lt_index); | |
e90b62db JM |
7220 | if (function != line_info->function) |
7221 | { | |
7222 | function = line_info->function; | |
71dfc51f | 7223 | |
e90b62db | 7224 | /* Set the address register to the first line in the function */ |
2e4b9b8c RH |
7225 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7226 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7227 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7228 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
e90b62db JM |
7229 | } |
7230 | else | |
7231 | { | |
f19a6894 JW |
7232 | /* ??? See the DW_LNS_advance_pc comment above. */ |
7233 | if (0) | |
7234 | { | |
2e4b9b8c RH |
7235 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7236 | "DW_LNS_fixed_advance_pc"); | |
7237 | dw2_asm_output_delta (2, line_label, prev_line_label, NULL); | |
f19a6894 JW |
7238 | } |
7239 | else | |
7240 | { | |
2e4b9b8c RH |
7241 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7242 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7243 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7244 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
f19a6894 | 7245 | } |
e90b62db | 7246 | } |
2ad9852d | 7247 | |
f19a6894 | 7248 | strcpy (prev_line_label, line_label); |
71dfc51f | 7249 | |
f19a6894 JW |
7250 | /* Emit debug info for the source file of the current line, if |
7251 | different from the previous line. */ | |
e90b62db JM |
7252 | if (line_info->dw_file_num != current_file) |
7253 | { | |
7254 | current_file = line_info->dw_file_num; | |
2e4b9b8c RH |
7255 | dw2_asm_output_data (1, DW_LNS_set_file, "DW_LNS_set_file"); |
7256 | dw2_asm_output_data_uleb128 (current_file, "(\"%s\")", | |
981975b6 | 7257 | file_table.table[current_file]); |
e90b62db | 7258 | } |
71dfc51f | 7259 | |
f19a6894 JW |
7260 | /* Emit debug info for the current line number, choosing the encoding |
7261 | that uses the least amount of space. */ | |
e90b62db JM |
7262 | if (line_info->dw_line_num != current_line) |
7263 | { | |
7264 | line_offset = line_info->dw_line_num - current_line; | |
7265 | line_delta = line_offset - DWARF_LINE_BASE; | |
7266 | current_line = line_info->dw_line_num; | |
7267 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
2e4b9b8c RH |
7268 | dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE + line_delta, |
7269 | "line %lu", current_line); | |
e90b62db JM |
7270 | else |
7271 | { | |
2e4b9b8c RH |
7272 | dw2_asm_output_data (1, DW_LNS_advance_line, |
7273 | "advance to line %lu", current_line); | |
7274 | dw2_asm_output_data_sleb128 (line_offset, NULL); | |
7275 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); | |
e90b62db JM |
7276 | } |
7277 | } | |
2f22d404 | 7278 | else |
2e4b9b8c | 7279 | dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy"); |
71dfc51f | 7280 | |
10a11b75 | 7281 | #if 0 |
2f22d404 | 7282 | cont: |
10a11b75 | 7283 | #endif |
2ad9852d RK |
7284 | |
7285 | lt_index++; | |
e90b62db JM |
7286 | |
7287 | /* If we're done with a function, end its sequence. */ | |
7288 | if (lt_index == separate_line_info_table_in_use | |
7289 | || separate_line_info_table[lt_index].function != function) | |
7290 | { | |
7291 | current_file = 1; | |
7292 | current_line = 1; | |
71dfc51f | 7293 | |
f19a6894 | 7294 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 7295 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
7296 | if (0) |
7297 | { | |
2e4b9b8c RH |
7298 | dw2_asm_output_data (1, DW_LNS_fixed_advance_pc, |
7299 | "DW_LNS_fixed_advance_pc"); | |
7300 | dw2_asm_output_delta (2, line_label, prev_line_label, NULL); | |
f19a6894 JW |
7301 | } |
7302 | else | |
7303 | { | |
2e4b9b8c RH |
7304 | dw2_asm_output_data (1, 0, "DW_LNE_set_address"); |
7305 | dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL); | |
7306 | dw2_asm_output_data (1, DW_LNE_set_address, NULL); | |
8e7fa2c8 | 7307 | dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL); |
f19a6894 | 7308 | } |
e90b62db JM |
7309 | |
7310 | /* Output the marker for the end of this sequence. */ | |
2e4b9b8c RH |
7311 | dw2_asm_output_data (1, 0, "DW_LNE_end_sequence"); |
7312 | dw2_asm_output_data_uleb128 (1, NULL); | |
7313 | dw2_asm_output_data (1, DW_LNE_end_sequence, NULL); | |
e90b62db JM |
7314 | } |
7315 | } | |
f19f17e0 JM |
7316 | |
7317 | /* Output the marker for the end of the line number info. */ | |
2e4b9b8c | 7318 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
a3f97cbb JW |
7319 | } |
7320 | \f | |
a3f97cbb JW |
7321 | /* Given a pointer to a tree node for some base type, return a pointer to |
7322 | a DIE that describes the given type. | |
7323 | ||
7324 | This routine must only be called for GCC type nodes that correspond to | |
7325 | Dwarf base (fundamental) types. */ | |
71dfc51f | 7326 | |
a3f97cbb JW |
7327 | static dw_die_ref |
7328 | base_type_die (type) | |
b3694847 | 7329 | tree type; |
a3f97cbb | 7330 | { |
b3694847 SS |
7331 | dw_die_ref base_type_result; |
7332 | const char *type_name; | |
7333 | enum dwarf_type encoding; | |
7334 | tree name = TYPE_NAME (type); | |
a3f97cbb | 7335 | |
2ad9852d | 7336 | if (TREE_CODE (type) == ERROR_MARK || TREE_CODE (type) == VOID_TYPE) |
a3f97cbb JW |
7337 | return 0; |
7338 | ||
405f63da MM |
7339 | if (name) |
7340 | { | |
7341 | if (TREE_CODE (name) == TYPE_DECL) | |
7342 | name = DECL_NAME (name); | |
7343 | ||
7344 | type_name = IDENTIFIER_POINTER (name); | |
7345 | } | |
7346 | else | |
7347 | type_name = "__unknown__"; | |
a9d38797 | 7348 | |
a3f97cbb JW |
7349 | switch (TREE_CODE (type)) |
7350 | { | |
a3f97cbb | 7351 | case INTEGER_TYPE: |
a9d38797 | 7352 | /* Carefully distinguish the C character types, without messing |
a3f97cbb | 7353 | up if the language is not C. Note that we check only for the names |
556273e0 | 7354 | that contain spaces; other names might occur by coincidence in other |
a3f97cbb | 7355 | languages. */ |
a9d38797 JM |
7356 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
7357 | && (type == char_type_node | |
7358 | || ! strcmp (type_name, "signed char") | |
7359 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 7360 | { |
a9d38797 JM |
7361 | if (TREE_UNSIGNED (type)) |
7362 | encoding = DW_ATE_unsigned; | |
7363 | else | |
7364 | encoding = DW_ATE_signed; | |
7365 | break; | |
a3f97cbb | 7366 | } |
556273e0 | 7367 | /* else fall through. */ |
a3f97cbb | 7368 | |
a9d38797 JM |
7369 | case CHAR_TYPE: |
7370 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
7371 | if (TREE_UNSIGNED (type)) | |
7372 | encoding = DW_ATE_unsigned_char; | |
7373 | else | |
7374 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
7375 | break; |
7376 | ||
7377 | case REAL_TYPE: | |
a9d38797 | 7378 | encoding = DW_ATE_float; |
a3f97cbb JW |
7379 | break; |
7380 | ||
405f63da MM |
7381 | /* Dwarf2 doesn't know anything about complex ints, so use |
7382 | a user defined type for it. */ | |
a3f97cbb | 7383 | case COMPLEX_TYPE: |
405f63da MM |
7384 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
7385 | encoding = DW_ATE_complex_float; | |
7386 | else | |
7387 | encoding = DW_ATE_lo_user; | |
a3f97cbb JW |
7388 | break; |
7389 | ||
7390 | case BOOLEAN_TYPE: | |
a9d38797 JM |
7391 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
7392 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
7393 | break; |
7394 | ||
7395 | default: | |
2ad9852d RK |
7396 | /* No other TREE_CODEs are Dwarf fundamental types. */ |
7397 | abort (); | |
a3f97cbb JW |
7398 | } |
7399 | ||
54ba1f0d | 7400 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die, type); |
14a774a9 RK |
7401 | if (demangle_name_func) |
7402 | type_name = (*demangle_name_func) (type_name); | |
7403 | ||
a9d38797 JM |
7404 | add_AT_string (base_type_result, DW_AT_name, type_name); |
7405 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 7406 | int_size_in_bytes (type)); |
a9d38797 | 7407 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
7408 | |
7409 | return base_type_result; | |
7410 | } | |
7411 | ||
7412 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
7413 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
7414 | a given type is generally the same as the given type, except that if the | |
7415 | given type is a pointer or reference type, then the root type of the given | |
7416 | type is the root type of the "basis" type for the pointer or reference | |
7417 | type. (This definition of the "root" type is recursive.) Also, the root | |
7418 | type of a `const' qualified type or a `volatile' qualified type is the | |
7419 | root type of the given type without the qualifiers. */ | |
71dfc51f | 7420 | |
a3f97cbb JW |
7421 | static tree |
7422 | root_type (type) | |
b3694847 | 7423 | tree type; |
a3f97cbb JW |
7424 | { |
7425 | if (TREE_CODE (type) == ERROR_MARK) | |
7426 | return error_mark_node; | |
7427 | ||
7428 | switch (TREE_CODE (type)) | |
7429 | { | |
7430 | case ERROR_MARK: | |
7431 | return error_mark_node; | |
7432 | ||
7433 | case POINTER_TYPE: | |
7434 | case REFERENCE_TYPE: | |
7435 | return type_main_variant (root_type (TREE_TYPE (type))); | |
7436 | ||
7437 | default: | |
7438 | return type_main_variant (type); | |
7439 | } | |
7440 | } | |
7441 | ||
cc2902df | 7442 | /* Given a pointer to an arbitrary ..._TYPE tree node, return nonzero if the |
a3f97cbb | 7443 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ |
71dfc51f RK |
7444 | |
7445 | static inline int | |
a3f97cbb | 7446 | is_base_type (type) |
b3694847 | 7447 | tree type; |
a3f97cbb JW |
7448 | { |
7449 | switch (TREE_CODE (type)) | |
7450 | { | |
7451 | case ERROR_MARK: | |
7452 | case VOID_TYPE: | |
7453 | case INTEGER_TYPE: | |
7454 | case REAL_TYPE: | |
7455 | case COMPLEX_TYPE: | |
7456 | case BOOLEAN_TYPE: | |
7457 | case CHAR_TYPE: | |
7458 | return 1; | |
7459 | ||
7460 | case SET_TYPE: | |
7461 | case ARRAY_TYPE: | |
7462 | case RECORD_TYPE: | |
7463 | case UNION_TYPE: | |
7464 | case QUAL_UNION_TYPE: | |
7465 | case ENUMERAL_TYPE: | |
7466 | case FUNCTION_TYPE: | |
7467 | case METHOD_TYPE: | |
7468 | case POINTER_TYPE: | |
7469 | case REFERENCE_TYPE: | |
7470 | case FILE_TYPE: | |
7471 | case OFFSET_TYPE: | |
7472 | case LANG_TYPE: | |
604bb87d | 7473 | case VECTOR_TYPE: |
a3f97cbb JW |
7474 | return 0; |
7475 | ||
7476 | default: | |
7477 | abort (); | |
7478 | } | |
71dfc51f | 7479 | |
a3f97cbb JW |
7480 | return 0; |
7481 | } | |
7482 | ||
7483 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
7484 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 7485 | |
a3f97cbb JW |
7486 | static dw_die_ref |
7487 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
b3694847 SS |
7488 | tree type; |
7489 | int is_const_type; | |
7490 | int is_volatile_type; | |
7491 | dw_die_ref context_die; | |
a3f97cbb | 7492 | { |
b3694847 SS |
7493 | enum tree_code code = TREE_CODE (type); |
7494 | dw_die_ref mod_type_die = NULL; | |
7495 | dw_die_ref sub_die = NULL; | |
7496 | tree item_type = NULL; | |
a3f97cbb JW |
7497 | |
7498 | if (code != ERROR_MARK) | |
7499 | { | |
5101b304 MM |
7500 | tree qualified_type; |
7501 | ||
7502 | /* See if we already have the appropriately qualified variant of | |
7503 | this type. */ | |
c26fbbca | 7504 | qualified_type |
5101b304 MM |
7505 | = get_qualified_type (type, |
7506 | ((is_const_type ? TYPE_QUAL_CONST : 0) | |
c26fbbca | 7507 | | (is_volatile_type |
5101b304 | 7508 | ? TYPE_QUAL_VOLATILE : 0))); |
2ad9852d | 7509 | |
5101b304 MM |
7510 | /* If we do, then we can just use its DIE, if it exists. */ |
7511 | if (qualified_type) | |
7512 | { | |
7513 | mod_type_die = lookup_type_die (qualified_type); | |
7514 | if (mod_type_die) | |
7515 | return mod_type_die; | |
7516 | } | |
bdb669cb | 7517 | |
556273e0 | 7518 | /* Handle C typedef types. */ |
c26fbbca | 7519 | if (qualified_type && TYPE_NAME (qualified_type) |
5101b304 MM |
7520 | && TREE_CODE (TYPE_NAME (qualified_type)) == TYPE_DECL |
7521 | && DECL_ORIGINAL_TYPE (TYPE_NAME (qualified_type))) | |
a94dbf2c | 7522 | { |
5101b304 MM |
7523 | tree type_name = TYPE_NAME (qualified_type); |
7524 | tree dtype = TREE_TYPE (type_name); | |
2ad9852d | 7525 | |
5101b304 | 7526 | if (qualified_type == dtype) |
a94dbf2c JM |
7527 | { |
7528 | /* For a named type, use the typedef. */ | |
5101b304 MM |
7529 | gen_type_die (qualified_type, context_die); |
7530 | mod_type_die = lookup_type_die (qualified_type); | |
a94dbf2c JM |
7531 | } |
7532 | else if (is_const_type < TYPE_READONLY (dtype) | |
7533 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
7534 | /* cv-unqualified version of named type. Just use the unnamed | |
7535 | type to which it refers. */ | |
71dfc51f | 7536 | mod_type_die |
5101b304 | 7537 | = modified_type_die (DECL_ORIGINAL_TYPE (type_name), |
71dfc51f RK |
7538 | is_const_type, is_volatile_type, |
7539 | context_die); | |
2ad9852d | 7540 | |
71dfc51f | 7541 | /* Else cv-qualified version of named type; fall through. */ |
a94dbf2c JM |
7542 | } |
7543 | ||
7544 | if (mod_type_die) | |
556273e0 KH |
7545 | /* OK. */ |
7546 | ; | |
a94dbf2c | 7547 | else if (is_const_type) |
a3f97cbb | 7548 | { |
54ba1f0d | 7549 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die, type); |
a9d38797 | 7550 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
7551 | } |
7552 | else if (is_volatile_type) | |
7553 | { | |
54ba1f0d | 7554 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die, type); |
a9d38797 | 7555 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
7556 | } |
7557 | else if (code == POINTER_TYPE) | |
7558 | { | |
54ba1f0d | 7559 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die, type); |
a3f97cbb | 7560 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 7561 | #if 0 |
a3f97cbb | 7562 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 7563 | #endif |
a3f97cbb | 7564 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
7565 | } |
7566 | else if (code == REFERENCE_TYPE) | |
7567 | { | |
54ba1f0d | 7568 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die, type); |
a3f97cbb | 7569 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 7570 | #if 0 |
a3f97cbb | 7571 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
556273e0 | 7572 | #endif |
a3f97cbb | 7573 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
7574 | } |
7575 | else if (is_base_type (type)) | |
71dfc51f | 7576 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
7577 | else |
7578 | { | |
4b674448 JM |
7579 | gen_type_die (type, context_die); |
7580 | ||
a3f97cbb JW |
7581 | /* We have to get the type_main_variant here (and pass that to the |
7582 | `lookup_type_die' routine) because the ..._TYPE node we have | |
7583 | might simply be a *copy* of some original type node (where the | |
7584 | copy was created to help us keep track of typedef names) and | |
7585 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 7586 | ..._TYPE node. */ |
0e98f924 AH |
7587 | if (TREE_CODE (type) != VECTOR_TYPE) |
7588 | mod_type_die = lookup_type_die (type_main_variant (type)); | |
7589 | else | |
7590 | /* Vectors have the debugging information in the type, | |
7591 | not the main variant. */ | |
7592 | mod_type_die = lookup_type_die (type); | |
3a88cbd1 JL |
7593 | if (mod_type_die == NULL) |
7594 | abort (); | |
a3f97cbb | 7595 | } |
3d2999ba MK |
7596 | |
7597 | /* We want to equate the qualified type to the die below. */ | |
8370aa3a | 7598 | type = qualified_type; |
a3f97cbb | 7599 | } |
71dfc51f | 7600 | |
8370aa3a RH |
7601 | if (type) |
7602 | equate_type_number_to_die (type, mod_type_die); | |
dfcf9891 | 7603 | if (item_type) |
71dfc51f RK |
7604 | /* We must do this after the equate_type_number_to_die call, in case |
7605 | this is a recursive type. This ensures that the modified_type_die | |
7606 | recursion will terminate even if the type is recursive. Recursive | |
7607 | types are possible in Ada. */ | |
7608 | sub_die = modified_type_die (item_type, | |
7609 | TYPE_READONLY (item_type), | |
7610 | TYPE_VOLATILE (item_type), | |
7611 | context_die); | |
7612 | ||
a3f97cbb | 7613 | if (sub_die != NULL) |
71dfc51f RK |
7614 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
7615 | ||
a3f97cbb JW |
7616 | return mod_type_die; |
7617 | } | |
7618 | ||
a3f97cbb | 7619 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6d2f8887 | 7620 | an enumerated type. */ |
71dfc51f RK |
7621 | |
7622 | static inline int | |
a3f97cbb | 7623 | type_is_enum (type) |
b3694847 | 7624 | tree type; |
a3f97cbb JW |
7625 | { |
7626 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
7627 | } | |
7628 | ||
7d9d8943 AM |
7629 | /* Return the register number described by a given RTL node. */ |
7630 | ||
7631 | static unsigned int | |
7632 | reg_number (rtl) | |
b3694847 | 7633 | rtx rtl; |
7d9d8943 | 7634 | { |
b3694847 | 7635 | unsigned regno = REGNO (rtl); |
7d9d8943 AM |
7636 | |
7637 | if (regno >= FIRST_PSEUDO_REGISTER) | |
e7af1d45 | 7638 | abort (); |
7d9d8943 | 7639 | |
e7af1d45 | 7640 | return DBX_REGISTER_NUMBER (regno); |
7d9d8943 AM |
7641 | } |
7642 | ||
e7af1d45 RK |
7643 | /* Return a location descriptor that designates a machine register or |
7644 | zero if there is no such. */ | |
71dfc51f | 7645 | |
a3f97cbb JW |
7646 | static dw_loc_descr_ref |
7647 | reg_loc_descriptor (rtl) | |
b3694847 | 7648 | rtx rtl; |
a3f97cbb | 7649 | { |
b3694847 | 7650 | dw_loc_descr_ref loc_result = NULL; |
d22c2324 | 7651 | unsigned reg; |
71dfc51f | 7652 | |
e7af1d45 RK |
7653 | if (REGNO (rtl) >= FIRST_PSEUDO_REGISTER) |
7654 | return 0; | |
7655 | ||
7656 | reg = reg_number (rtl); | |
d22c2324 TT |
7657 | if (reg <= 31) |
7658 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); | |
7659 | else | |
7660 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); | |
71dfc51f | 7661 | |
a3f97cbb JW |
7662 | return loc_result; |
7663 | } | |
7664 | ||
d8041cc8 RH |
7665 | /* Return a location descriptor that designates a constant. */ |
7666 | ||
7667 | static dw_loc_descr_ref | |
7668 | int_loc_descriptor (i) | |
7669 | HOST_WIDE_INT i; | |
7670 | { | |
7671 | enum dwarf_location_atom op; | |
7672 | ||
7673 | /* Pick the smallest representation of a constant, rather than just | |
7674 | defaulting to the LEB encoding. */ | |
7675 | if (i >= 0) | |
7676 | { | |
7677 | if (i <= 31) | |
7678 | op = DW_OP_lit0 + i; | |
7679 | else if (i <= 0xff) | |
7680 | op = DW_OP_const1u; | |
7681 | else if (i <= 0xffff) | |
7682 | op = DW_OP_const2u; | |
7683 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
7684 | || i <= 0xffffffff) | |
7685 | op = DW_OP_const4u; | |
7686 | else | |
7687 | op = DW_OP_constu; | |
7688 | } | |
7689 | else | |
7690 | { | |
7691 | if (i >= -0x80) | |
7692 | op = DW_OP_const1s; | |
7693 | else if (i >= -0x8000) | |
7694 | op = DW_OP_const2s; | |
7695 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
7696 | || i >= -0x80000000) | |
7697 | op = DW_OP_const4s; | |
7698 | else | |
7699 | op = DW_OP_consts; | |
7700 | } | |
7701 | ||
7702 | return new_loc_descr (op, i, 0); | |
7703 | } | |
7704 | ||
a3f97cbb | 7705 | /* Return a location descriptor that designates a base+offset location. */ |
71dfc51f | 7706 | |
a3f97cbb JW |
7707 | static dw_loc_descr_ref |
7708 | based_loc_descr (reg, offset) | |
7709 | unsigned reg; | |
7710 | long int offset; | |
7711 | { | |
b3694847 | 7712 | dw_loc_descr_ref loc_result; |
810429b7 JM |
7713 | /* For the "frame base", we use the frame pointer or stack pointer |
7714 | registers, since the RTL for local variables is relative to one of | |
7715 | them. */ | |
b3694847 SS |
7716 | unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed |
7717 | ? HARD_FRAME_POINTER_REGNUM | |
7718 | : STACK_POINTER_REGNUM); | |
71dfc51f | 7719 | |
a3f97cbb | 7720 | if (reg == fp_reg) |
71dfc51f | 7721 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 7722 | else if (reg <= 31) |
71dfc51f | 7723 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 7724 | else |
71dfc51f RK |
7725 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
7726 | ||
a3f97cbb JW |
7727 | return loc_result; |
7728 | } | |
7729 | ||
7730 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
7731 | |
7732 | static inline int | |
a3f97cbb | 7733 | is_based_loc (rtl) |
b3694847 | 7734 | rtx rtl; |
a3f97cbb | 7735 | { |
173bf5be KH |
7736 | return (GET_CODE (rtl) == PLUS |
7737 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
7738 | && REGNO (XEXP (rtl, 0)) < FIRST_PSEUDO_REGISTER | |
7739 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
7740 | } |
7741 | ||
7742 | /* The following routine converts the RTL for a variable or parameter | |
7743 | (resident in memory) into an equivalent Dwarf representation of a | |
7744 | mechanism for getting the address of that same variable onto the top of a | |
7745 | hypothetical "address evaluation" stack. | |
71dfc51f | 7746 | |
a3f97cbb JW |
7747 | When creating memory location descriptors, we are effectively transforming |
7748 | the RTL for a memory-resident object into its Dwarf postfix expression | |
7749 | equivalent. This routine recursively descends an RTL tree, turning | |
e60d4d7b JL |
7750 | it into Dwarf postfix code as it goes. |
7751 | ||
7752 | MODE is the mode of the memory reference, needed to handle some | |
e7af1d45 RK |
7753 | autoincrement addressing modes. |
7754 | ||
7755 | Return 0 if we can't represent the location. */ | |
71dfc51f | 7756 | |
a3f97cbb | 7757 | static dw_loc_descr_ref |
e60d4d7b | 7758 | mem_loc_descriptor (rtl, mode) |
b3694847 | 7759 | rtx rtl; |
e60d4d7b | 7760 | enum machine_mode mode; |
a3f97cbb JW |
7761 | { |
7762 | dw_loc_descr_ref mem_loc_result = NULL; | |
e7af1d45 | 7763 | |
556273e0 | 7764 | /* Note that for a dynamically sized array, the location we will generate a |
a3f97cbb JW |
7765 | description of here will be the lowest numbered location which is |
7766 | actually within the array. That's *not* necessarily the same as the | |
7767 | zeroth element of the array. */ | |
71dfc51f | 7768 | |
1865dbb5 JM |
7769 | #ifdef ASM_SIMPLIFY_DWARF_ADDR |
7770 | rtl = ASM_SIMPLIFY_DWARF_ADDR (rtl); | |
7771 | #endif | |
7772 | ||
a3f97cbb JW |
7773 | switch (GET_CODE (rtl)) |
7774 | { | |
e60d4d7b JL |
7775 | case POST_INC: |
7776 | case POST_DEC: | |
e2134eea | 7777 | case POST_MODIFY: |
e60d4d7b JL |
7778 | /* POST_INC and POST_DEC can be handled just like a SUBREG. So we |
7779 | just fall into the SUBREG code. */ | |
7780 | ||
2ad9852d | 7781 | /* ... fall through ... */ |
e60d4d7b | 7782 | |
a3f97cbb JW |
7783 | case SUBREG: |
7784 | /* The case of a subreg may arise when we have a local (register) | |
7785 | variable or a formal (register) parameter which doesn't quite fill | |
7786 | up an entire register. For now, just assume that it is | |
7787 | legitimate to make the Dwarf info refer to the whole register which | |
7788 | contains the given subreg. */ | |
ddef6bc7 | 7789 | rtl = SUBREG_REG (rtl); |
71dfc51f | 7790 | |
2ad9852d | 7791 | /* ... fall through ... */ |
a3f97cbb JW |
7792 | |
7793 | case REG: | |
7794 | /* Whenever a register number forms a part of the description of the | |
7795 | method for calculating the (dynamic) address of a memory resident | |
556273e0 | 7796 | object, DWARF rules require the register number be referred to as |
a3f97cbb JW |
7797 | a "base register". This distinction is not based in any way upon |
7798 | what category of register the hardware believes the given register | |
7799 | belongs to. This is strictly DWARF terminology we're dealing with | |
7800 | here. Note that in cases where the location of a memory-resident | |
7801 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
7802 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
7803 | may just be OP_BASEREG (basereg). This may look deceptively like | |
7804 | the object in question was allocated to a register (rather than in | |
7805 | memory) so DWARF consumers need to be aware of the subtle | |
7806 | distinction between OP_REG and OP_BASEREG. */ | |
e7af1d45 RK |
7807 | if (REGNO (rtl) < FIRST_PSEUDO_REGISTER) |
7808 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
a3f97cbb JW |
7809 | break; |
7810 | ||
7811 | case MEM: | |
f7d2b0ed | 7812 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
e7af1d45 RK |
7813 | if (mem_loc_result != 0) |
7814 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
a3f97cbb JW |
7815 | break; |
7816 | ||
d8041cc8 RH |
7817 | case LABEL_REF: |
7818 | /* Some ports can transform a symbol ref into a label ref, because | |
368f4cd6 NC |
7819 | the symbol ref is too far away and has to be dumped into a constant |
7820 | pool. */ | |
a3f97cbb JW |
7821 | case CONST: |
7822 | case SYMBOL_REF: | |
6331d1c1 | 7823 | /* Alternatively, the symbol in the constant pool might be referenced |
c6f9b9a1 | 7824 | by a different symbol. */ |
2ad9852d | 7825 | if (GET_CODE (rtl) == SYMBOL_REF && CONSTANT_POOL_ADDRESS_P (rtl)) |
79cdfa4b | 7826 | { |
149d6f9e JJ |
7827 | bool marked; |
7828 | rtx tmp = get_pool_constant_mark (rtl, &marked); | |
2ad9852d | 7829 | |
6331d1c1 | 7830 | if (GET_CODE (tmp) == SYMBOL_REF) |
149d6f9e JJ |
7831 | { |
7832 | rtl = tmp; | |
7833 | if (CONSTANT_POOL_ADDRESS_P (tmp)) | |
7834 | get_pool_constant_mark (tmp, &marked); | |
7835 | else | |
7836 | marked = true; | |
7837 | } | |
7838 | ||
7839 | /* If all references to this pool constant were optimized away, | |
7840 | it was not output and thus we can't represent it. | |
7841 | FIXME: might try to use DW_OP_const_value here, though | |
7842 | DW_OP_piece complicates it. */ | |
7843 | if (!marked) | |
7844 | return 0; | |
79cdfa4b TM |
7845 | } |
7846 | ||
a3f97cbb JW |
7847 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); |
7848 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
c470afad RK |
7849 | mem_loc_result->dw_loc_oprnd1.v.val_addr = rtl; |
7850 | VARRAY_PUSH_RTX (used_rtx_varray, rtl); | |
a3f97cbb JW |
7851 | break; |
7852 | ||
e2134eea JH |
7853 | case PRE_MODIFY: |
7854 | /* Extract the PLUS expression nested inside and fall into | |
0407c02b | 7855 | PLUS code below. */ |
e2134eea JH |
7856 | rtl = XEXP (rtl, 1); |
7857 | goto plus; | |
7858 | ||
e60d4d7b JL |
7859 | case PRE_INC: |
7860 | case PRE_DEC: | |
7861 | /* Turn these into a PLUS expression and fall into the PLUS code | |
7862 | below. */ | |
7863 | rtl = gen_rtx_PLUS (word_mode, XEXP (rtl, 0), | |
7864 | GEN_INT (GET_CODE (rtl) == PRE_INC | |
556273e0 KH |
7865 | ? GET_MODE_UNIT_SIZE (mode) |
7866 | : -GET_MODE_UNIT_SIZE (mode))); | |
7867 | ||
2ad9852d | 7868 | /* ... fall through ... */ |
e60d4d7b | 7869 | |
a3f97cbb | 7870 | case PLUS: |
e2134eea | 7871 | plus: |
a3f97cbb | 7872 | if (is_based_loc (rtl)) |
71dfc51f RK |
7873 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
7874 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
7875 | else |
7876 | { | |
d8041cc8 | 7877 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode); |
e7af1d45 RK |
7878 | if (mem_loc_result == 0) |
7879 | break; | |
d8041cc8 RH |
7880 | |
7881 | if (GET_CODE (XEXP (rtl, 1)) == CONST_INT | |
7882 | && INTVAL (XEXP (rtl, 1)) >= 0) | |
e7af1d45 RK |
7883 | add_loc_descr (&mem_loc_result, |
7884 | new_loc_descr (DW_OP_plus_uconst, | |
7885 | INTVAL (XEXP (rtl, 1)), 0)); | |
d8041cc8 RH |
7886 | else |
7887 | { | |
7888 | add_loc_descr (&mem_loc_result, | |
7889 | mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
7890 | add_loc_descr (&mem_loc_result, | |
7891 | new_loc_descr (DW_OP_plus, 0, 0)); | |
7892 | } | |
a3f97cbb JW |
7893 | } |
7894 | break; | |
7895 | ||
dd2478ae | 7896 | case MULT: |
e7af1d45 RK |
7897 | { |
7898 | /* If a pseudo-reg is optimized away, it is possible for it to | |
7899 | be replaced with a MEM containing a multiply. */ | |
7900 | dw_loc_descr_ref op0 = mem_loc_descriptor (XEXP (rtl, 0), mode); | |
7901 | dw_loc_descr_ref op1 = mem_loc_descriptor (XEXP (rtl, 1), mode); | |
7902 | ||
7903 | if (op0 == 0 || op1 == 0) | |
7904 | break; | |
7905 | ||
7906 | mem_loc_result = op0; | |
7907 | add_loc_descr (&mem_loc_result, op1); | |
7908 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); | |
7909 | break; | |
7910 | } | |
dd2478ae | 7911 | |
a3f97cbb | 7912 | case CONST_INT: |
d8041cc8 | 7913 | mem_loc_result = int_loc_descriptor (INTVAL (rtl)); |
a3f97cbb JW |
7914 | break; |
7915 | ||
a9e8a5ee RK |
7916 | case ADDRESSOF: |
7917 | /* If this is a MEM, return its address. Otherwise, we can't | |
7918 | represent this. */ | |
7919 | if (GET_CODE (XEXP (rtl, 0)) == MEM) | |
7920 | return mem_loc_descriptor (XEXP (XEXP (rtl, 0), 0), mode); | |
7921 | else | |
7922 | return 0; | |
7923 | ||
a3f97cbb JW |
7924 | default: |
7925 | abort (); | |
7926 | } | |
71dfc51f | 7927 | |
a3f97cbb JW |
7928 | return mem_loc_result; |
7929 | } | |
7930 | ||
956d6950 | 7931 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
7932 | This is typically a complex variable. */ |
7933 | ||
7934 | static dw_loc_descr_ref | |
7935 | concat_loc_descriptor (x0, x1) | |
b3694847 | 7936 | rtx x0, x1; |
4401bf24 JL |
7937 | { |
7938 | dw_loc_descr_ref cc_loc_result = NULL; | |
e7af1d45 RK |
7939 | dw_loc_descr_ref x0_ref = loc_descriptor (x0); |
7940 | dw_loc_descr_ref x1_ref = loc_descriptor (x1); | |
4401bf24 | 7941 | |
e7af1d45 RK |
7942 | if (x0_ref == 0 || x1_ref == 0) |
7943 | return 0; | |
7944 | ||
7945 | cc_loc_result = x0_ref; | |
4401bf24 | 7946 | add_loc_descr (&cc_loc_result, |
e7af1d45 RK |
7947 | new_loc_descr (DW_OP_piece, |
7948 | GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
4401bf24 | 7949 | |
e7af1d45 | 7950 | add_loc_descr (&cc_loc_result, x1_ref); |
4401bf24 | 7951 | add_loc_descr (&cc_loc_result, |
e7af1d45 RK |
7952 | new_loc_descr (DW_OP_piece, |
7953 | GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
4401bf24 JL |
7954 | |
7955 | return cc_loc_result; | |
7956 | } | |
7957 | ||
a3f97cbb JW |
7958 | /* Output a proper Dwarf location descriptor for a variable or parameter |
7959 | which is either allocated in a register or in a memory location. For a | |
7960 | register, we just generate an OP_REG and the register number. For a | |
7961 | memory location we provide a Dwarf postfix expression describing how to | |
e7af1d45 RK |
7962 | generate the (dynamic) address of the object onto the address stack. |
7963 | ||
7964 | If we don't know how to describe it, return 0. */ | |
71dfc51f | 7965 | |
a3f97cbb JW |
7966 | static dw_loc_descr_ref |
7967 | loc_descriptor (rtl) | |
b3694847 | 7968 | rtx rtl; |
a3f97cbb JW |
7969 | { |
7970 | dw_loc_descr_ref loc_result = NULL; | |
e7af1d45 | 7971 | |
a3f97cbb JW |
7972 | switch (GET_CODE (rtl)) |
7973 | { | |
7974 | case SUBREG: | |
a3f97cbb JW |
7975 | /* The case of a subreg may arise when we have a local (register) |
7976 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 7977 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
7978 | legitimate to make the Dwarf info refer to the whole register which |
7979 | contains the given subreg. */ | |
ddef6bc7 | 7980 | rtl = SUBREG_REG (rtl); |
71dfc51f | 7981 | |
2ad9852d | 7982 | /* ... fall through ... */ |
a3f97cbb JW |
7983 | |
7984 | case REG: | |
5c90448c | 7985 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
7986 | break; |
7987 | ||
7988 | case MEM: | |
e60d4d7b | 7989 | loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
a3f97cbb JW |
7990 | break; |
7991 | ||
4401bf24 JL |
7992 | case CONCAT: |
7993 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
7994 | break; | |
7995 | ||
a3f97cbb | 7996 | default: |
71dfc51f | 7997 | abort (); |
a3f97cbb | 7998 | } |
71dfc51f | 7999 | |
a3f97cbb JW |
8000 | return loc_result; |
8001 | } | |
8002 | ||
2ad9852d RK |
8003 | /* Similar, but generate the descriptor from trees instead of rtl. This comes |
8004 | up particularly with variable length arrays. If ADDRESSP is nonzero, we are | |
8005 | looking for an address. Otherwise, we return a value. If we can't make a | |
8006 | descriptor, return 0. */ | |
d8041cc8 RH |
8007 | |
8008 | static dw_loc_descr_ref | |
8009 | loc_descriptor_from_tree (loc, addressp) | |
8010 | tree loc; | |
8011 | int addressp; | |
8012 | { | |
e7af1d45 RK |
8013 | dw_loc_descr_ref ret, ret1; |
8014 | int indirect_p = 0; | |
d8041cc8 RH |
8015 | int unsignedp = TREE_UNSIGNED (TREE_TYPE (loc)); |
8016 | enum dwarf_location_atom op; | |
8017 | ||
8018 | /* ??? Most of the time we do not take proper care for sign/zero | |
8019 | extending the values properly. Hopefully this won't be a real | |
8020 | problem... */ | |
8021 | ||
8022 | switch (TREE_CODE (loc)) | |
8023 | { | |
8024 | case ERROR_MARK: | |
e7af1d45 | 8025 | return 0; |
d8041cc8 | 8026 | |
b4ae5201 | 8027 | case WITH_RECORD_EXPR: |
e7af1d45 | 8028 | case PLACEHOLDER_EXPR: |
b4ae5201 RK |
8029 | /* This case involves extracting fields from an object to determine the |
8030 | position of other fields. We don't try to encode this here. The | |
8031 | only user of this is Ada, which encodes the needed information using | |
8032 | the names of types. */ | |
e7af1d45 | 8033 | return 0; |
b4ae5201 | 8034 | |
aea9695c RK |
8035 | case CALL_EXPR: |
8036 | return 0; | |
8037 | ||
8038 | case ADDR_EXPR: | |
8039 | /* We can support this only if we can look through conversions and | |
8040 | find an INDIRECT_EXPR. */ | |
8041 | for (loc = TREE_OPERAND (loc, 0); | |
8042 | TREE_CODE (loc) == CONVERT_EXPR || TREE_CODE (loc) == NOP_EXPR | |
8043 | || TREE_CODE (loc) == NON_LVALUE_EXPR | |
8044 | || TREE_CODE (loc) == VIEW_CONVERT_EXPR | |
8045 | || TREE_CODE (loc) == SAVE_EXPR; | |
8046 | loc = TREE_OPERAND (loc, 0)) | |
8047 | ; | |
8048 | ||
8049 | return (TREE_CODE (loc) == INDIRECT_REF | |
8050 | ? loc_descriptor_from_tree (TREE_OPERAND (loc, 0), addressp) | |
8051 | : 0); | |
8052 | ||
d8041cc8 | 8053 | case VAR_DECL: |
b9203463 RH |
8054 | if (DECL_THREAD_LOCAL (loc)) |
8055 | { | |
8056 | rtx rtl; | |
8057 | ||
8058 | #ifndef ASM_OUTPUT_DWARF_DTPREL | |
8059 | /* If this is not defined, we have no way to emit the data. */ | |
8060 | return 0; | |
8061 | #endif | |
8062 | ||
8063 | /* The way DW_OP_GNU_push_tls_address is specified, we can only | |
8064 | look up addresses of objects in the current module. */ | |
8065 | if (! (*targetm.binds_local_p) (loc)) | |
8066 | return 0; | |
8067 | ||
8068 | rtl = rtl_for_decl_location (loc); | |
8069 | if (rtl == NULL_RTX) | |
8070 | return 0; | |
8071 | ||
8072 | if (GET_CODE (rtl) != MEM) | |
8073 | return 0; | |
8074 | rtl = XEXP (rtl, 0); | |
8075 | if (! CONSTANT_P (rtl)) | |
8076 | return 0; | |
8077 | ||
8078 | ret = new_loc_descr (INTERNAL_DW_OP_tls_addr, 0, 0); | |
8079 | ret->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
8080 | ret->dw_loc_oprnd1.v.val_addr = rtl; | |
8081 | ||
8082 | ret1 = new_loc_descr (DW_OP_GNU_push_tls_address, 0, 0); | |
8083 | add_loc_descr (&ret, ret1); | |
8084 | ||
8085 | indirect_p = 1; | |
8086 | break; | |
8087 | } | |
8088 | /* FALLTHRU */ | |
8089 | ||
d8041cc8 RH |
8090 | case PARM_DECL: |
8091 | { | |
8092 | rtx rtl = rtl_for_decl_location (loc); | |
d8041cc8 | 8093 | |
a97c9600 | 8094 | if (rtl == NULL_RTX) |
e7af1d45 | 8095 | return 0; |
a97c9600 | 8096 | else if (CONSTANT_P (rtl)) |
d8041cc8 RH |
8097 | { |
8098 | ret = new_loc_descr (DW_OP_addr, 0, 0); | |
8099 | ret->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
8100 | ret->dw_loc_oprnd1.v.val_addr = rtl; | |
e7af1d45 | 8101 | indirect_p = 1; |
d8041cc8 RH |
8102 | } |
8103 | else | |
8104 | { | |
c28abdf0 RH |
8105 | enum machine_mode mode = GET_MODE (rtl); |
8106 | ||
d8041cc8 RH |
8107 | if (GET_CODE (rtl) == MEM) |
8108 | { | |
e7af1d45 | 8109 | indirect_p = 1; |
d8041cc8 RH |
8110 | rtl = XEXP (rtl, 0); |
8111 | } | |
2ad9852d | 8112 | |
d8041cc8 RH |
8113 | ret = mem_loc_descriptor (rtl, mode); |
8114 | } | |
8115 | } | |
8116 | break; | |
8117 | ||
8118 | case INDIRECT_REF: | |
8119 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 | 8120 | indirect_p = 1; |
d8041cc8 RH |
8121 | break; |
8122 | ||
749552c4 RK |
8123 | case COMPOUND_EXPR: |
8124 | return loc_descriptor_from_tree (TREE_OPERAND (loc, 1), addressp); | |
8125 | ||
ed972b14 RK |
8126 | case NOP_EXPR: |
8127 | case CONVERT_EXPR: | |
8128 | case NON_LVALUE_EXPR: | |
ed239f5a | 8129 | case VIEW_CONVERT_EXPR: |
b4ae5201 | 8130 | case SAVE_EXPR: |
ed972b14 | 8131 | return loc_descriptor_from_tree (TREE_OPERAND (loc, 0), addressp); |
e57cabac | 8132 | |
d8041cc8 RH |
8133 | case COMPONENT_REF: |
8134 | case BIT_FIELD_REF: | |
8135 | case ARRAY_REF: | |
b4e3fabb | 8136 | case ARRAY_RANGE_REF: |
d8041cc8 RH |
8137 | { |
8138 | tree obj, offset; | |
8139 | HOST_WIDE_INT bitsize, bitpos, bytepos; | |
8140 | enum machine_mode mode; | |
8141 | int volatilep; | |
d8041cc8 RH |
8142 | |
8143 | obj = get_inner_reference (loc, &bitsize, &bitpos, &offset, &mode, | |
a06ef755 | 8144 | &unsignedp, &volatilep); |
e7af1d45 RK |
8145 | |
8146 | if (obj == loc) | |
8147 | return 0; | |
8148 | ||
d8041cc8 | 8149 | ret = loc_descriptor_from_tree (obj, 1); |
e7af1d45 | 8150 | if (ret == 0 |
2ad9852d | 8151 | || bitpos % BITS_PER_UNIT != 0 || bitsize % BITS_PER_UNIT != 0) |
e7af1d45 | 8152 | return 0; |
d8041cc8 RH |
8153 | |
8154 | if (offset != NULL_TREE) | |
8155 | { | |
8156 | /* Variable offset. */ | |
8157 | add_loc_descr (&ret, loc_descriptor_from_tree (offset, 0)); | |
8158 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
8159 | } | |
8160 | ||
e7af1d45 RK |
8161 | if (!addressp) |
8162 | indirect_p = 1; | |
d8041cc8 RH |
8163 | |
8164 | bytepos = bitpos / BITS_PER_UNIT; | |
8165 | if (bytepos > 0) | |
8166 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus_uconst, bytepos, 0)); | |
8167 | else if (bytepos < 0) | |
8168 | { | |
8169 | add_loc_descr (&ret, int_loc_descriptor (bytepos)); | |
8170 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
8171 | } | |
8172 | break; | |
8173 | } | |
8174 | ||
8175 | case INTEGER_CST: | |
8176 | if (host_integerp (loc, 0)) | |
8177 | ret = int_loc_descriptor (tree_low_cst (loc, 0)); | |
e7af1d45 RK |
8178 | else |
8179 | return 0; | |
d8041cc8 | 8180 | break; |
d8041cc8 | 8181 | |
c26fbbca | 8182 | case TRUTH_AND_EXPR: |
9702143f | 8183 | case TRUTH_ANDIF_EXPR: |
d8041cc8 RH |
8184 | case BIT_AND_EXPR: |
8185 | op = DW_OP_and; | |
8186 | goto do_binop; | |
e7af1d45 | 8187 | |
9702143f | 8188 | case TRUTH_XOR_EXPR: |
d8041cc8 RH |
8189 | case BIT_XOR_EXPR: |
8190 | op = DW_OP_xor; | |
8191 | goto do_binop; | |
e7af1d45 | 8192 | |
9702143f RK |
8193 | case TRUTH_OR_EXPR: |
8194 | case TRUTH_ORIF_EXPR: | |
d8041cc8 RH |
8195 | case BIT_IOR_EXPR: |
8196 | op = DW_OP_or; | |
8197 | goto do_binop; | |
e7af1d45 | 8198 | |
d8041cc8 RH |
8199 | case TRUNC_DIV_EXPR: |
8200 | op = DW_OP_div; | |
8201 | goto do_binop; | |
e7af1d45 | 8202 | |
d8041cc8 RH |
8203 | case MINUS_EXPR: |
8204 | op = DW_OP_minus; | |
8205 | goto do_binop; | |
e7af1d45 | 8206 | |
d8041cc8 RH |
8207 | case TRUNC_MOD_EXPR: |
8208 | op = DW_OP_mod; | |
8209 | goto do_binop; | |
e7af1d45 | 8210 | |
d8041cc8 RH |
8211 | case MULT_EXPR: |
8212 | op = DW_OP_mul; | |
8213 | goto do_binop; | |
e7af1d45 | 8214 | |
d8041cc8 RH |
8215 | case LSHIFT_EXPR: |
8216 | op = DW_OP_shl; | |
8217 | goto do_binop; | |
e7af1d45 | 8218 | |
d8041cc8 RH |
8219 | case RSHIFT_EXPR: |
8220 | op = (unsignedp ? DW_OP_shr : DW_OP_shra); | |
8221 | goto do_binop; | |
e7af1d45 | 8222 | |
d8041cc8 RH |
8223 | case PLUS_EXPR: |
8224 | if (TREE_CODE (TREE_OPERAND (loc, 1)) == INTEGER_CST | |
8225 | && host_integerp (TREE_OPERAND (loc, 1), 0)) | |
8226 | { | |
8227 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8228 | if (ret == 0) |
8229 | return 0; | |
8230 | ||
d8041cc8 RH |
8231 | add_loc_descr (&ret, |
8232 | new_loc_descr (DW_OP_plus_uconst, | |
8233 | tree_low_cst (TREE_OPERAND (loc, 1), | |
8234 | 0), | |
8235 | 0)); | |
8236 | break; | |
8237 | } | |
e7af1d45 | 8238 | |
d8041cc8 RH |
8239 | op = DW_OP_plus; |
8240 | goto do_binop; | |
2ad9852d | 8241 | |
d8041cc8 RH |
8242 | case LE_EXPR: |
8243 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8244 | return 0; |
8245 | ||
d8041cc8 RH |
8246 | op = DW_OP_le; |
8247 | goto do_binop; | |
e7af1d45 | 8248 | |
d8041cc8 RH |
8249 | case GE_EXPR: |
8250 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8251 | return 0; |
8252 | ||
d8041cc8 RH |
8253 | op = DW_OP_ge; |
8254 | goto do_binop; | |
e7af1d45 | 8255 | |
d8041cc8 RH |
8256 | case LT_EXPR: |
8257 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8258 | return 0; |
8259 | ||
d8041cc8 RH |
8260 | op = DW_OP_lt; |
8261 | goto do_binop; | |
e7af1d45 | 8262 | |
d8041cc8 RH |
8263 | case GT_EXPR: |
8264 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
e7af1d45 RK |
8265 | return 0; |
8266 | ||
d8041cc8 RH |
8267 | op = DW_OP_gt; |
8268 | goto do_binop; | |
e7af1d45 | 8269 | |
d8041cc8 RH |
8270 | case EQ_EXPR: |
8271 | op = DW_OP_eq; | |
8272 | goto do_binop; | |
e7af1d45 | 8273 | |
d8041cc8 RH |
8274 | case NE_EXPR: |
8275 | op = DW_OP_ne; | |
8276 | goto do_binop; | |
8277 | ||
8278 | do_binop: | |
8279 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8280 | ret1 = loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0); |
8281 | if (ret == 0 || ret1 == 0) | |
8282 | return 0; | |
8283 | ||
8284 | add_loc_descr (&ret, ret1); | |
d8041cc8 RH |
8285 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); |
8286 | break; | |
8287 | ||
9702143f | 8288 | case TRUTH_NOT_EXPR: |
d8041cc8 RH |
8289 | case BIT_NOT_EXPR: |
8290 | op = DW_OP_not; | |
8291 | goto do_unop; | |
e7af1d45 | 8292 | |
d8041cc8 RH |
8293 | case ABS_EXPR: |
8294 | op = DW_OP_abs; | |
8295 | goto do_unop; | |
e7af1d45 | 8296 | |
d8041cc8 RH |
8297 | case NEGATE_EXPR: |
8298 | op = DW_OP_neg; | |
8299 | goto do_unop; | |
8300 | ||
8301 | do_unop: | |
8302 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8303 | if (ret == 0) |
8304 | return 0; | |
8305 | ||
d8041cc8 RH |
8306 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); |
8307 | break; | |
8308 | ||
8309 | case MAX_EXPR: | |
8310 | loc = build (COND_EXPR, TREE_TYPE (loc), | |
8311 | build (LT_EXPR, integer_type_node, | |
8312 | TREE_OPERAND (loc, 0), TREE_OPERAND (loc, 1)), | |
8313 | TREE_OPERAND (loc, 1), TREE_OPERAND (loc, 0)); | |
2ad9852d | 8314 | |
3ef42a0c | 8315 | /* ... fall through ... */ |
d8041cc8 RH |
8316 | |
8317 | case COND_EXPR: | |
8318 | { | |
e7af1d45 RK |
8319 | dw_loc_descr_ref lhs |
8320 | = loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0); | |
8321 | dw_loc_descr_ref rhs | |
8322 | = loc_descriptor_from_tree (TREE_OPERAND (loc, 2), 0); | |
d8041cc8 RH |
8323 | dw_loc_descr_ref bra_node, jump_node, tmp; |
8324 | ||
8325 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
e7af1d45 RK |
8326 | if (ret == 0 || lhs == 0 || rhs == 0) |
8327 | return 0; | |
8328 | ||
d8041cc8 RH |
8329 | bra_node = new_loc_descr (DW_OP_bra, 0, 0); |
8330 | add_loc_descr (&ret, bra_node); | |
8331 | ||
e7af1d45 | 8332 | add_loc_descr (&ret, rhs); |
d8041cc8 RH |
8333 | jump_node = new_loc_descr (DW_OP_skip, 0, 0); |
8334 | add_loc_descr (&ret, jump_node); | |
8335 | ||
e7af1d45 | 8336 | add_loc_descr (&ret, lhs); |
d8041cc8 | 8337 | bra_node->dw_loc_oprnd1.val_class = dw_val_class_loc; |
e7af1d45 | 8338 | bra_node->dw_loc_oprnd1.v.val_loc = lhs; |
d8041cc8 RH |
8339 | |
8340 | /* ??? Need a node to point the skip at. Use a nop. */ | |
8341 | tmp = new_loc_descr (DW_OP_nop, 0, 0); | |
8342 | add_loc_descr (&ret, tmp); | |
8343 | jump_node->dw_loc_oprnd1.val_class = dw_val_class_loc; | |
8344 | jump_node->dw_loc_oprnd1.v.val_loc = tmp; | |
8345 | } | |
8346 | break; | |
8347 | ||
8348 | default: | |
8349 | abort (); | |
8350 | } | |
8351 | ||
e7af1d45 RK |
8352 | /* Show if we can't fill the request for an address. */ |
8353 | if (addressp && indirect_p == 0) | |
8354 | return 0; | |
d8041cc8 RH |
8355 | |
8356 | /* If we've got an address and don't want one, dereference. */ | |
e7af1d45 | 8357 | if (!addressp && indirect_p > 0) |
d8041cc8 | 8358 | { |
e7af1d45 RK |
8359 | HOST_WIDE_INT size = int_size_in_bytes (TREE_TYPE (loc)); |
8360 | ||
8361 | if (size > DWARF2_ADDR_SIZE || size == -1) | |
8362 | return 0; | |
2ad9852d | 8363 | else if (size == DWARF2_ADDR_SIZE) |
d8041cc8 RH |
8364 | op = DW_OP_deref; |
8365 | else | |
8366 | op = DW_OP_deref_size; | |
e7af1d45 RK |
8367 | |
8368 | add_loc_descr (&ret, new_loc_descr (op, size, 0)); | |
d8041cc8 RH |
8369 | } |
8370 | ||
8371 | return ret; | |
8372 | } | |
8373 | ||
665f2503 | 8374 | /* Given a value, round it up to the lowest multiple of `boundary' |
a3f97cbb | 8375 | which is not less than the value itself. */ |
71dfc51f | 8376 | |
665f2503 | 8377 | static inline HOST_WIDE_INT |
a3f97cbb | 8378 | ceiling (value, boundary) |
665f2503 RK |
8379 | HOST_WIDE_INT value; |
8380 | unsigned int boundary; | |
a3f97cbb JW |
8381 | { |
8382 | return (((value + boundary - 1) / boundary) * boundary); | |
8383 | } | |
8384 | ||
8385 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
8386 | pointer to the declared type for the relevant field variable, or return | |
8387 | `integer_type_node' if the given node turns out to be an | |
8388 | ERROR_MARK node. */ | |
71dfc51f RK |
8389 | |
8390 | static inline tree | |
a3f97cbb | 8391 | field_type (decl) |
b3694847 | 8392 | tree decl; |
a3f97cbb | 8393 | { |
b3694847 | 8394 | tree type; |
a3f97cbb JW |
8395 | |
8396 | if (TREE_CODE (decl) == ERROR_MARK) | |
8397 | return integer_type_node; | |
8398 | ||
8399 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 8400 | if (type == NULL_TREE) |
a3f97cbb JW |
8401 | type = TREE_TYPE (decl); |
8402 | ||
8403 | return type; | |
8404 | } | |
8405 | ||
5f446d21 DD |
8406 | /* Given a pointer to a tree node, return the alignment in bits for |
8407 | it, or else return BITS_PER_WORD if the node actually turns out to | |
8408 | be an ERROR_MARK node. */ | |
71dfc51f RK |
8409 | |
8410 | static inline unsigned | |
a3f97cbb | 8411 | simple_type_align_in_bits (type) |
b3694847 | 8412 | tree type; |
a3f97cbb JW |
8413 | { |
8414 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
8415 | } | |
8416 | ||
5f446d21 DD |
8417 | static inline unsigned |
8418 | simple_decl_align_in_bits (decl) | |
b3694847 | 8419 | tree decl; |
5f446d21 DD |
8420 | { |
8421 | return (TREE_CODE (decl) != ERROR_MARK) ? DECL_ALIGN (decl) : BITS_PER_WORD; | |
8422 | } | |
8423 | ||
a3f97cbb JW |
8424 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE |
8425 | node, return the size in bits for the type if it is a constant, or else | |
8426 | return the alignment for the type if the type's size is not constant, or | |
8427 | else return BITS_PER_WORD if the type actually turns out to be an | |
8428 | ERROR_MARK node. */ | |
71dfc51f | 8429 | |
665f2503 | 8430 | static inline unsigned HOST_WIDE_INT |
a3f97cbb | 8431 | simple_type_size_in_bits (type) |
b3694847 | 8432 | tree type; |
a3f97cbb | 8433 | { |
3df18884 | 8434 | |
a3f97cbb JW |
8435 | if (TREE_CODE (type) == ERROR_MARK) |
8436 | return BITS_PER_WORD; | |
2ad9852d | 8437 | else if (TYPE_SIZE (type) == NULL_TREE) |
3df18884 | 8438 | return 0; |
2ad9852d RK |
8439 | else if (host_integerp (TYPE_SIZE (type), 1)) |
8440 | return tree_low_cst (TYPE_SIZE (type), 1); | |
8441 | else | |
3df18884 | 8442 | return TYPE_ALIGN (type); |
a3f97cbb JW |
8443 | } |
8444 | ||
2ad9852d RK |
8445 | /* Given a pointer to a FIELD_DECL, compute and return the byte offset of the |
8446 | lowest addressed byte of the "containing object" for the given FIELD_DECL, | |
8447 | or return 0 if we are unable to determine what that offset is, either | |
8448 | because the argument turns out to be a pointer to an ERROR_MARK node, or | |
8449 | because the offset is actually variable. (We can't handle the latter case | |
8450 | just yet). */ | |
71dfc51f | 8451 | |
665f2503 | 8452 | static HOST_WIDE_INT |
a3f97cbb | 8453 | field_byte_offset (decl) |
b3694847 | 8454 | tree decl; |
a3f97cbb | 8455 | { |
665f2503 | 8456 | unsigned int type_align_in_bits; |
5f446d21 | 8457 | unsigned int decl_align_in_bits; |
665f2503 | 8458 | unsigned HOST_WIDE_INT type_size_in_bits; |
665f2503 | 8459 | HOST_WIDE_INT object_offset_in_bits; |
665f2503 RK |
8460 | tree type; |
8461 | tree field_size_tree; | |
8462 | HOST_WIDE_INT bitpos_int; | |
8463 | HOST_WIDE_INT deepest_bitpos; | |
8464 | unsigned HOST_WIDE_INT field_size_in_bits; | |
a3f97cbb JW |
8465 | |
8466 | if (TREE_CODE (decl) == ERROR_MARK) | |
8467 | return 0; | |
2ad9852d | 8468 | else if (TREE_CODE (decl) != FIELD_DECL) |
a3f97cbb JW |
8469 | abort (); |
8470 | ||
8471 | type = field_type (decl); | |
a3f97cbb JW |
8472 | field_size_tree = DECL_SIZE (decl); |
8473 | ||
3df18884 RH |
8474 | /* The size could be unspecified if there was an error, or for |
8475 | a flexible array member. */ | |
50352c9c | 8476 | if (! field_size_tree) |
3df18884 | 8477 | field_size_tree = bitsize_zero_node; |
50352c9c | 8478 | |
556273e0 | 8479 | /* We cannot yet cope with fields whose positions are variable, so |
a3f97cbb JW |
8480 | for now, when we see such things, we simply return 0. Someday, we may |
8481 | be able to handle such cases, but it will be damn difficult. */ | |
665f2503 | 8482 | if (! host_integerp (bit_position (decl), 0)) |
a3f97cbb | 8483 | return 0; |
14a774a9 | 8484 | |
665f2503 | 8485 | bitpos_int = int_bit_position (decl); |
a3f97cbb | 8486 | |
3df18884 | 8487 | /* If we don't know the size of the field, pretend it's a full word. */ |
665f2503 RK |
8488 | if (host_integerp (field_size_tree, 1)) |
8489 | field_size_in_bits = tree_low_cst (field_size_tree, 1); | |
14a774a9 RK |
8490 | else |
8491 | field_size_in_bits = BITS_PER_WORD; | |
a3f97cbb JW |
8492 | |
8493 | type_size_in_bits = simple_type_size_in_bits (type); | |
a3f97cbb | 8494 | type_align_in_bits = simple_type_align_in_bits (type); |
5f446d21 | 8495 | decl_align_in_bits = simple_decl_align_in_bits (decl); |
a3f97cbb | 8496 | |
2ad9852d RK |
8497 | /* The GCC front-end doesn't make any attempt to keep track of the starting |
8498 | bit offset (relative to the start of the containing structure type) of the | |
8499 | hypothetical "containing object" for a bit-field. Thus, when computing | |
8500 | the byte offset value for the start of the "containing object" of a | |
8501 | bit-field, we must deduce this information on our own. This can be rather | |
8502 | tricky to do in some cases. For example, handling the following structure | |
8503 | type definition when compiling for an i386/i486 target (which only aligns | |
8504 | long long's to 32-bit boundaries) can be very tricky: | |
a3f97cbb JW |
8505 | |
8506 | struct S { int field1; long long field2:31; }; | |
8507 | ||
2ad9852d RK |
8508 | Fortunately, there is a simple rule-of-thumb which can be used in such |
8509 | cases. When compiling for an i386/i486, GCC will allocate 8 bytes for the | |
8510 | structure shown above. It decides to do this based upon one simple rule | |
8511 | for bit-field allocation. GCC allocates each "containing object" for each | |
8512 | bit-field at the first (i.e. lowest addressed) legitimate alignment | |
8513 | boundary (based upon the required minimum alignment for the declared type | |
8514 | of the field) which it can possibly use, subject to the condition that | |
8515 | there is still enough available space remaining in the containing object | |
8516 | (when allocated at the selected point) to fully accommodate all of the | |
8517 | bits of the bit-field itself. | |
8518 | ||
8519 | This simple rule makes it obvious why GCC allocates 8 bytes for each | |
8520 | object of the structure type shown above. When looking for a place to | |
8521 | allocate the "containing object" for `field2', the compiler simply tries | |
8522 | to allocate a 64-bit "containing object" at each successive 32-bit | |
8523 | boundary (starting at zero) until it finds a place to allocate that 64- | |
8524 | bit field such that at least 31 contiguous (and previously unallocated) | |
8525 | bits remain within that selected 64 bit field. (As it turns out, for the | |
8526 | example above, the compiler finds it is OK to allocate the "containing | |
8527 | object" 64-bit field at bit-offset zero within the structure type.) | |
8528 | ||
8529 | Here we attempt to work backwards from the limited set of facts we're | |
8530 | given, and we try to deduce from those facts, where GCC must have believed | |
8531 | that the containing object started (within the structure type). The value | |
8532 | we deduce is then used (by the callers of this routine) to generate | |
8533 | DW_AT_location and DW_AT_bit_offset attributes for fields (both bit-fields | |
8534 | and, in the case of DW_AT_location, regular fields as well). */ | |
a3f97cbb JW |
8535 | |
8536 | /* Figure out the bit-distance from the start of the structure to the | |
8537 | "deepest" bit of the bit-field. */ | |
8538 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
8539 | ||
8540 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
8541 | lowest addressed bit of the containing object must be. */ | |
5f446d21 DD |
8542 | object_offset_in_bits = deepest_bitpos - type_size_in_bits; |
8543 | ||
8544 | /* Round up to type_align by default. This works best for bitfields. */ | |
8545 | object_offset_in_bits += type_align_in_bits - 1; | |
8546 | object_offset_in_bits /= type_align_in_bits; | |
8547 | object_offset_in_bits *= type_align_in_bits; | |
a3f97cbb | 8548 | |
5f446d21 DD |
8549 | if (object_offset_in_bits > bitpos_int) |
8550 | { | |
8551 | /* Sigh, the decl must be packed. */ | |
8552 | object_offset_in_bits = deepest_bitpos - type_size_in_bits; | |
8553 | ||
8554 | /* Round up to decl_align instead. */ | |
8555 | object_offset_in_bits += decl_align_in_bits - 1; | |
8556 | object_offset_in_bits /= decl_align_in_bits; | |
8557 | object_offset_in_bits *= decl_align_in_bits; | |
8558 | } | |
a3f97cbb | 8559 | |
2ad9852d | 8560 | return object_offset_in_bits / BITS_PER_UNIT; |
a3f97cbb | 8561 | } |
a3f97cbb | 8562 | \f |
71dfc51f RK |
8563 | /* The following routines define various Dwarf attributes and any data |
8564 | associated with them. */ | |
a3f97cbb | 8565 | |
ef76d03b | 8566 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 8567 | |
ef76d03b | 8568 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
8569 | whole parameters. Note that the location attributes for struct fields are |
8570 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 8571 | |
b9203463 RH |
8572 | static inline void |
8573 | add_AT_location_description (die, attr_kind, descr) | |
a3f97cbb | 8574 | dw_die_ref die; |
ef76d03b | 8575 | enum dwarf_attribute attr_kind; |
b9203463 | 8576 | dw_loc_descr_ref descr; |
a3f97cbb | 8577 | { |
e7af1d45 RK |
8578 | if (descr != 0) |
8579 | add_AT_loc (die, attr_kind, descr); | |
a3f97cbb JW |
8580 | } |
8581 | ||
2ad9852d RK |
8582 | /* Attach the specialized form of location attribute used for data members of |
8583 | struct and union types. In the special case of a FIELD_DECL node which | |
8584 | represents a bit-field, the "offset" part of this special location | |
8585 | descriptor must indicate the distance in bytes from the lowest-addressed | |
8586 | byte of the containing struct or union type to the lowest-addressed byte of | |
8587 | the "containing object" for the bit-field. (See the `field_byte_offset' | |
8588 | function above). | |
8589 | ||
8590 | For any given bit-field, the "containing object" is a hypothetical object | |
8591 | (of some integral or enum type) within which the given bit-field lives. The | |
8592 | type of this hypothetical "containing object" is always the same as the | |
8593 | declared type of the individual bit-field itself (for GCC anyway... the | |
8594 | DWARF spec doesn't actually mandate this). Note that it is the size (in | |
8595 | bytes) of the hypothetical "containing object" which will be given in the | |
8596 | DW_AT_byte_size attribute for this bit-field. (See the | |
8597 | `byte_size_attribute' function below.) It is also used when calculating the | |
8598 | value of the DW_AT_bit_offset attribute. (See the `bit_offset_attribute' | |
8599 | function below.) */ | |
71dfc51f | 8600 | |
a3f97cbb JW |
8601 | static void |
8602 | add_data_member_location_attribute (die, decl) | |
b3694847 SS |
8603 | dw_die_ref die; |
8604 | tree decl; | |
a3f97cbb | 8605 | { |
649ce3f2 JM |
8606 | long offset; |
8607 | dw_loc_descr_ref loc_descr = 0; | |
a3f97cbb | 8608 | |
61b32c02 | 8609 | if (TREE_CODE (decl) == TREE_VEC) |
649ce3f2 JM |
8610 | { |
8611 | /* We're working on the TAG_inheritance for a base class. */ | |
1d3d6b1e | 8612 | if (TREE_VIA_VIRTUAL (decl) && is_cxx ()) |
649ce3f2 JM |
8613 | { |
8614 | /* For C++ virtual bases we can't just use BINFO_OFFSET, as they | |
8615 | aren't at a fixed offset from all (sub)objects of the same | |
8616 | type. We need to extract the appropriate offset from our | |
8617 | vtable. The following dwarf expression means | |
8618 | ||
8619 | BaseAddr = ObAddr + *((*ObAddr) - Offset) | |
8620 | ||
8621 | This is specific to the V3 ABI, of course. */ | |
8622 | ||
8623 | dw_loc_descr_ref tmp; | |
2ad9852d | 8624 | |
649ce3f2 JM |
8625 | /* Make a copy of the object address. */ |
8626 | tmp = new_loc_descr (DW_OP_dup, 0, 0); | |
8627 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 8628 | |
649ce3f2 JM |
8629 | /* Extract the vtable address. */ |
8630 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
8631 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 8632 | |
649ce3f2 JM |
8633 | /* Calculate the address of the offset. */ |
8634 | offset = tree_low_cst (BINFO_VPTR_FIELD (decl), 0); | |
8635 | if (offset >= 0) | |
8636 | abort (); | |
2ad9852d | 8637 | |
649ce3f2 JM |
8638 | tmp = int_loc_descriptor (-offset); |
8639 | add_loc_descr (&loc_descr, tmp); | |
8640 | tmp = new_loc_descr (DW_OP_minus, 0, 0); | |
8641 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 8642 | |
649ce3f2 JM |
8643 | /* Extract the offset. */ |
8644 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
8645 | add_loc_descr (&loc_descr, tmp); | |
2ad9852d | 8646 | |
649ce3f2 JM |
8647 | /* Add it to the object address. */ |
8648 | tmp = new_loc_descr (DW_OP_plus, 0, 0); | |
8649 | add_loc_descr (&loc_descr, tmp); | |
8650 | } | |
8651 | else | |
8652 | offset = tree_low_cst (BINFO_OFFSET (decl), 0); | |
8653 | } | |
61b32c02 JM |
8654 | else |
8655 | offset = field_byte_offset (decl); | |
8656 | ||
649ce3f2 JM |
8657 | if (! loc_descr) |
8658 | { | |
8659 | enum dwarf_location_atom op; | |
8660 | ||
2ad9852d RK |
8661 | /* The DWARF2 standard says that we should assume that the structure |
8662 | address is already on the stack, so we can specify a structure field | |
8663 | address by using DW_OP_plus_uconst. */ | |
71dfc51f | 8664 | |
a3f97cbb | 8665 | #ifdef MIPS_DEBUGGING_INFO |
2ad9852d RK |
8666 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst |
8667 | operator correctly. It works only if we leave the offset on the | |
8668 | stack. */ | |
649ce3f2 | 8669 | op = DW_OP_constu; |
a3f97cbb | 8670 | #else |
649ce3f2 | 8671 | op = DW_OP_plus_uconst; |
a3f97cbb | 8672 | #endif |
71dfc51f | 8673 | |
649ce3f2 JM |
8674 | loc_descr = new_loc_descr (op, offset, 0); |
8675 | } | |
2ad9852d | 8676 | |
a3f97cbb JW |
8677 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); |
8678 | } | |
8679 | ||
8680 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
8681 | does not have a "location" either in memory or in a register. These | |
8682 | things can arise in GNU C when a constant is passed as an actual parameter | |
8683 | to an inlined function. They can also arise in C++ where declared | |
8684 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 8685 | |
a3f97cbb JW |
8686 | static void |
8687 | add_const_value_attribute (die, rtl) | |
b3694847 SS |
8688 | dw_die_ref die; |
8689 | rtx rtl; | |
a3f97cbb JW |
8690 | { |
8691 | switch (GET_CODE (rtl)) | |
8692 | { | |
8693 | case CONST_INT: | |
2e4b9b8c RH |
8694 | /* Note that a CONST_INT rtx could represent either an integer |
8695 | or a floating-point constant. A CONST_INT is used whenever | |
8696 | the constant will fit into a single word. In all such | |
8697 | cases, the original mode of the constant value is wiped | |
8698 | out, and the CONST_INT rtx is assigned VOIDmode. */ | |
8699 | { | |
8700 | HOST_WIDE_INT val = INTVAL (rtl); | |
c26fbbca | 8701 | |
2e4b9b8c | 8702 | /* ??? We really should be using HOST_WIDE_INT throughout. */ |
5929a2f0 | 8703 | if (val < 0 && (long) val == val) |
3d7a191f | 8704 | add_AT_int (die, DW_AT_const_value, (long) val); |
5929a2f0 RH |
8705 | else if ((unsigned long) val == (unsigned HOST_WIDE_INT) val) |
8706 | add_AT_unsigned (die, DW_AT_const_value, (unsigned long) val); | |
94784fb9 RK |
8707 | else |
8708 | { | |
e7af1d45 | 8709 | #if HOST_BITS_PER_LONG * 2 == HOST_BITS_PER_WIDE_INT |
94784fb9 RK |
8710 | add_AT_long_long (die, DW_AT_const_value, |
8711 | val >> HOST_BITS_PER_LONG, val); | |
e7af1d45 | 8712 | #else |
94784fb9 | 8713 | abort (); |
e7af1d45 | 8714 | #endif |
94784fb9 | 8715 | } |
2e4b9b8c | 8716 | } |
a3f97cbb JW |
8717 | break; |
8718 | ||
8719 | case CONST_DOUBLE: | |
8720 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
8721 | floating-point constant. A CONST_DOUBLE is used whenever the | |
8722 | constant requires more than one word in order to be adequately | |
469ac993 JM |
8723 | represented. We output CONST_DOUBLEs as blocks. */ |
8724 | { | |
b3694847 | 8725 | enum machine_mode mode = GET_MODE (rtl); |
469ac993 JM |
8726 | |
8727 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
8728 | { | |
b3694847 | 8729 | unsigned length = GET_MODE_SIZE (mode) / 4; |
c26fbbca | 8730 | long *array = (long *) xmalloc (sizeof (long) * length); |
71dfc51f | 8731 | REAL_VALUE_TYPE rv; |
469ac993 | 8732 | |
71dfc51f | 8733 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
8734 | switch (mode) |
8735 | { | |
8736 | case SFmode: | |
71dfc51f | 8737 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
8738 | break; |
8739 | ||
8740 | case DFmode: | |
71dfc51f | 8741 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
8742 | break; |
8743 | ||
8744 | case XFmode: | |
8745 | case TFmode: | |
71dfc51f | 8746 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
8747 | break; |
8748 | ||
8749 | default: | |
8750 | abort (); | |
8751 | } | |
8752 | ||
469ac993 JM |
8753 | add_AT_float (die, DW_AT_const_value, length, array); |
8754 | } | |
8755 | else | |
2e4b9b8c RH |
8756 | { |
8757 | /* ??? We really should be using HOST_WIDE_INT throughout. */ | |
8758 | if (HOST_BITS_PER_LONG != HOST_BITS_PER_WIDE_INT) | |
8759 | abort (); | |
2ad9852d | 8760 | |
2e4b9b8c RH |
8761 | add_AT_long_long (die, DW_AT_const_value, |
8762 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
8763 | } | |
469ac993 | 8764 | } |
a3f97cbb JW |
8765 | break; |
8766 | ||
8767 | case CONST_STRING: | |
8768 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
8769 | break; | |
8770 | ||
8771 | case SYMBOL_REF: | |
8772 | case LABEL_REF: | |
8773 | case CONST: | |
c470afad RK |
8774 | add_AT_addr (die, DW_AT_const_value, rtl); |
8775 | VARRAY_PUSH_RTX (used_rtx_varray, rtl); | |
a3f97cbb JW |
8776 | break; |
8777 | ||
8778 | case PLUS: | |
8779 | /* In cases where an inlined instance of an inline function is passed | |
8780 | the address of an `auto' variable (which is local to the caller) we | |
8781 | can get a situation where the DECL_RTL of the artificial local | |
8782 | variable (for the inlining) which acts as a stand-in for the | |
8783 | corresponding formal parameter (of the inline function) will look | |
8784 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
556273e0 KH |
8785 | exactly a compile-time constant expression, but it isn't the address |
8786 | of the (artificial) local variable either. Rather, it represents the | |
a3f97cbb | 8787 | *value* which the artificial local variable always has during its |
556273e0 | 8788 | lifetime. We currently have no way to represent such quasi-constant |
6a7a9f01 | 8789 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
8790 | break; |
8791 | ||
8792 | default: | |
8793 | /* No other kinds of rtx should be possible here. */ | |
8794 | abort (); | |
8795 | } | |
8796 | ||
8797 | } | |
8798 | ||
d8041cc8 RH |
8799 | static rtx |
8800 | rtl_for_decl_location (decl) | |
8801 | tree decl; | |
a3f97cbb | 8802 | { |
b3694847 | 8803 | rtx rtl; |
71dfc51f | 8804 | |
a3f97cbb JW |
8805 | /* Here we have to decide where we are going to say the parameter "lives" |
8806 | (as far as the debugger is concerned). We only have a couple of | |
8807 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 8808 | |
556273e0 | 8809 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 8810 | activation of the function. If optimization is enabled however, this |
556273e0 | 8811 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
a3f97cbb JW |
8812 | that the parameter doesn't really live anywhere (as far as the code |
8813 | generation parts of GCC are concerned) during most of the function's | |
8814 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
8815 | referenced within the function. |
8816 | ||
8817 | We could just generate a location descriptor here for all non-NULL | |
8818 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
8819 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
8820 | where DECL_RTL is NULL or is a pseudo-reg. | |
8821 | ||
8822 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
8823 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
8824 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
8825 | we can be sure that the parameter was passed using the same type as it is | |
8826 | declared to have within the function, and that its DECL_INCOMING_RTL | |
8827 | points us to a place where a value of that type is passed. | |
8828 | ||
8829 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
8830 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
8831 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
8832 | type which is *different* from the type of the parameter itself. Thus, | |
8833 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
8834 | such cases, the debugger would end up (for example) trying to fetch a | |
8835 | `float' from a place which actually contains the first part of a | |
8836 | `double'. That would lead to really incorrect and confusing | |
8837 | output at debug-time. | |
8838 | ||
8839 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
8840 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
8841 | are a couple of exceptions however. On little-endian machines we can | |
8842 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
8843 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
8844 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
8845 | when (on a little-endian machine) a non-prototyped function has a | |
8846 | parameter declared to be of type `short' or `char'. In such cases, | |
8847 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
8848 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
8849 | passed `int' value. If the debugger then uses that address to fetch | |
8850 | a `short' or a `char' (on a little-endian machine) the result will be | |
8851 | the correct data, so we allow for such exceptional cases below. | |
8852 | ||
8853 | Note that our goal here is to describe the place where the given formal | |
2ad9852d RK |
8854 | parameter lives during most of the function's activation (i.e. between the |
8855 | end of the prologue and the start of the epilogue). We'll do that as best | |
8856 | as we can. Note however that if the given formal parameter is modified | |
8857 | sometime during the execution of the function, then a stack backtrace (at | |
8858 | debug-time) will show the function as having been called with the *new* | |
8859 | value rather than the value which was originally passed in. This happens | |
8860 | rarely enough that it is not a major problem, but it *is* a problem, and | |
8861 | I'd like to fix it. | |
8862 | ||
8863 | A future version of dwarf2out.c may generate two additional attributes for | |
8864 | any given DW_TAG_formal_parameter DIE which will describe the "passed | |
8865 | type" and the "passed location" for the given formal parameter in addition | |
8866 | to the attributes we now generate to indicate the "declared type" and the | |
8867 | "active location" for each parameter. This additional set of attributes | |
8868 | could be used by debuggers for stack backtraces. Separately, note that | |
8869 | sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be NULL also. | |
8870 | This happens (for example) for inlined-instances of inline function formal | |
8871 | parameters which are never referenced. This really shouldn't be | |
8872 | happening. All PARM_DECL nodes should get valid non-NULL | |
8873 | DECL_INCOMING_RTL values, but integrate.c doesn't currently generate these | |
8874 | values for inlined instances of inline function parameters, so when we see | |
8875 | such cases, we are just out-of-luck for the time being (until integrate.c | |
a3f97cbb JW |
8876 | gets fixed). */ |
8877 | ||
8878 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
110c3568 | 8879 | rtl = DECL_RTL_IF_SET (decl); |
a3f97cbb | 8880 | |
c28abdf0 RH |
8881 | /* When generating abstract instances, ignore everything except |
8882 | constants and symbols living in memory. */ | |
8883 | if (! reload_completed) | |
8884 | { | |
8885 | if (rtl | |
8886 | && (CONSTANT_P (rtl) | |
8887 | || (GET_CODE (rtl) == MEM | |
8888 | && CONSTANT_P (XEXP (rtl, 0))))) | |
4c8c0dec JJ |
8889 | { |
8890 | #ifdef ASM_SIMPLIFY_DWARF_ADDR | |
8891 | rtl = ASM_SIMPLIFY_DWARF_ADDR (rtl); | |
8892 | #endif | |
8893 | return rtl; | |
8894 | } | |
c28abdf0 RH |
8895 | rtl = NULL_RTX; |
8896 | } | |
8897 | else if (TREE_CODE (decl) == PARM_DECL) | |
a3f97cbb JW |
8898 | { |
8899 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
8900 | { | |
d8041cc8 RH |
8901 | tree declared_type = type_main_variant (TREE_TYPE (decl)); |
8902 | tree passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 8903 | |
71dfc51f | 8904 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb | 8905 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
2ad9852d | 8906 | all cases where (rtl == NULL_RTX) just below. */ |
a3f97cbb | 8907 | if (declared_type == passed_type) |
71dfc51f RK |
8908 | rtl = DECL_INCOMING_RTL (decl); |
8909 | else if (! BYTES_BIG_ENDIAN | |
8910 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
555b6442 HPN |
8911 | && (GET_MODE_SIZE (TYPE_MODE (declared_type)) |
8912 | <= GET_MODE_SIZE (TYPE_MODE (passed_type)))) | |
556273e0 | 8913 | rtl = DECL_INCOMING_RTL (decl); |
a3f97cbb | 8914 | } |
5a904a61 JW |
8915 | |
8916 | /* If the parm was passed in registers, but lives on the stack, then | |
8917 | make a big endian correction if the mode of the type of the | |
8918 | parameter is not the same as the mode of the rtl. */ | |
8919 | /* ??? This is the same series of checks that are made in dbxout.c before | |
8920 | we reach the big endian correction code there. It isn't clear if all | |
8921 | of these checks are necessary here, but keeping them all is the safe | |
8922 | thing to do. */ | |
8923 | else if (GET_CODE (rtl) == MEM | |
8924 | && XEXP (rtl, 0) != const0_rtx | |
8925 | && ! CONSTANT_P (XEXP (rtl, 0)) | |
8926 | /* Not passed in memory. */ | |
8927 | && GET_CODE (DECL_INCOMING_RTL (decl)) != MEM | |
8928 | /* Not passed by invisible reference. */ | |
8929 | && (GET_CODE (XEXP (rtl, 0)) != REG | |
8930 | || REGNO (XEXP (rtl, 0)) == HARD_FRAME_POINTER_REGNUM | |
8931 | || REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM | |
8932 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM | |
8933 | || REGNO (XEXP (rtl, 0)) == ARG_POINTER_REGNUM | |
8934 | #endif | |
8935 | ) | |
8936 | /* Big endian correction check. */ | |
8937 | && BYTES_BIG_ENDIAN | |
8938 | && TYPE_MODE (TREE_TYPE (decl)) != GET_MODE (rtl) | |
8939 | && (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl))) | |
8940 | < UNITS_PER_WORD)) | |
8941 | { | |
8942 | int offset = (UNITS_PER_WORD | |
8943 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl)))); | |
2ad9852d | 8944 | |
5a904a61 JW |
8945 | rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (decl)), |
8946 | plus_constant (XEXP (rtl, 0), offset)); | |
8947 | } | |
a3f97cbb | 8948 | } |
71dfc51f | 8949 | |
d8041cc8 RH |
8950 | if (rtl != NULL_RTX) |
8951 | { | |
8952 | rtl = eliminate_regs (rtl, 0, NULL_RTX); | |
6a7a9f01 | 8953 | #ifdef LEAF_REG_REMAP |
d8041cc8 RH |
8954 | if (current_function_uses_only_leaf_regs) |
8955 | leaf_renumber_regs_insn (rtl); | |
6a7a9f01 | 8956 | #endif |
d8041cc8 RH |
8957 | } |
8958 | ||
2ad9852d RK |
8959 | /* A variable with no DECL_RTL but a DECL_INITIAL is a compile-time constant, |
8960 | and will have been substituted directly into all expressions that use it. | |
8961 | C does not have such a concept, but C++ and other languages do. */ | |
c28abdf0 | 8962 | else if (TREE_CODE (decl) == VAR_DECL && DECL_INITIAL (decl)) |
6d73371a JJ |
8963 | { |
8964 | /* If a variable is initialized with a string constant without embedded | |
8965 | zeros, build CONST_STRING. */ | |
8966 | if (TREE_CODE (DECL_INITIAL (decl)) == STRING_CST | |
8967 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) | |
8968 | { | |
8969 | tree arrtype = TREE_TYPE (decl); | |
8970 | tree enttype = TREE_TYPE (arrtype); | |
8971 | tree domain = TYPE_DOMAIN (arrtype); | |
8972 | tree init = DECL_INITIAL (decl); | |
8973 | enum machine_mode mode = TYPE_MODE (enttype); | |
8974 | ||
8975 | if (GET_MODE_CLASS (mode) == MODE_INT && GET_MODE_SIZE (mode) == 1 | |
8976 | && domain | |
8977 | && integer_zerop (TYPE_MIN_VALUE (domain)) | |
8978 | && compare_tree_int (TYPE_MAX_VALUE (domain), | |
8979 | TREE_STRING_LENGTH (init) - 1) == 0 | |
8980 | && ((size_t) TREE_STRING_LENGTH (init) | |
8981 | == strlen (TREE_STRING_POINTER (init)) + 1)) | |
8982 | rtl = gen_rtx_CONST_STRING (VOIDmode, TREE_STRING_POINTER (init)); | |
8983 | } | |
29b91443 JM |
8984 | /* If the initializer is something that we know will expand into an |
8985 | immediate RTL constant, expand it now. Expanding anything else | |
8986 | tends to produce unresolved symbols; see debug/5770 and c++/6381. */ | |
8987 | else if (TREE_CODE (DECL_INITIAL (decl)) == INTEGER_CST | |
8988 | || TREE_CODE (DECL_INITIAL (decl)) == REAL_CST) | |
6d73371a JJ |
8989 | { |
8990 | rtl = expand_expr (DECL_INITIAL (decl), NULL_RTX, VOIDmode, | |
8991 | EXPAND_INITIALIZER); | |
29b91443 | 8992 | /* If expand_expr returns a MEM, it wasn't immediate. */ |
6d73371a | 8993 | if (rtl && GET_CODE (rtl) == MEM) |
29b91443 | 8994 | abort (); |
6d73371a JJ |
8995 | } |
8996 | } | |
8063ddcf | 8997 | |
4c8c0dec JJ |
8998 | #ifdef ASM_SIMPLIFY_DWARF_ADDR |
8999 | if (rtl) | |
9000 | rtl = ASM_SIMPLIFY_DWARF_ADDR (rtl); | |
9001 | #endif | |
b9203463 RH |
9002 | |
9003 | /* If we don't look past the constant pool, we risk emitting a | |
9004 | reference to a constant pool entry that isn't referenced from | |
9005 | code, and thus is not emitted. */ | |
9006 | if (rtl) | |
9007 | rtl = avoid_constant_pool_reference (rtl); | |
9008 | ||
d8041cc8 RH |
9009 | return rtl; |
9010 | } | |
9011 | ||
9012 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
9013 | data attribute for a variable or a parameter. We generate the | |
9014 | DW_AT_const_value attribute only in those cases where the given variable | |
9015 | or parameter does not have a true "location" either in memory or in a | |
9016 | register. This can happen (for example) when a constant is passed as an | |
9017 | actual argument in a call to an inline function. (It's possible that | |
9018 | these things can crop up in other ways also.) Note that one type of | |
9019 | constant value which can be passed into an inlined function is a constant | |
9020 | pointer. This can happen for example if an actual argument in an inlined | |
9021 | function call evaluates to a compile-time constant address. */ | |
9022 | ||
9023 | static void | |
9024 | add_location_or_const_value_attribute (die, decl) | |
b3694847 SS |
9025 | dw_die_ref die; |
9026 | tree decl; | |
d8041cc8 | 9027 | { |
b3694847 | 9028 | rtx rtl; |
b9203463 | 9029 | dw_loc_descr_ref descr; |
d8041cc8 RH |
9030 | |
9031 | if (TREE_CODE (decl) == ERROR_MARK) | |
9032 | return; | |
2ad9852d | 9033 | else if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) |
d8041cc8 RH |
9034 | abort (); |
9035 | ||
9036 | rtl = rtl_for_decl_location (decl); | |
a97c9600 RH |
9037 | if (rtl == NULL_RTX) |
9038 | return; | |
6a7a9f01 | 9039 | |
a3f97cbb JW |
9040 | switch (GET_CODE (rtl)) |
9041 | { | |
e9a25f70 | 9042 | case ADDRESSOF: |
b9203463 RH |
9043 | /* The address of a variable that was optimized away; |
9044 | don't emit anything. */ | |
e9a25f70 JL |
9045 | break; |
9046 | ||
a3f97cbb JW |
9047 | case CONST_INT: |
9048 | case CONST_DOUBLE: | |
9049 | case CONST_STRING: | |
9050 | case SYMBOL_REF: | |
9051 | case LABEL_REF: | |
9052 | case CONST: | |
9053 | case PLUS: | |
9054 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
9055 | add_const_value_attribute (die, rtl); | |
9056 | break; | |
9057 | ||
9058 | case MEM: | |
b9203463 RH |
9059 | if (TREE_CODE (decl) == VAR_DECL && DECL_THREAD_LOCAL (decl)) |
9060 | { | |
9061 | /* Need loc_descriptor_from_tree since that's where we know | |
9062 | how to handle TLS variables. Want the object's address | |
9063 | since the top-level DW_AT_location assumes such. See | |
9064 | the confusion in loc_descriptor for reference. */ | |
9065 | descr = loc_descriptor_from_tree (decl, 1); | |
9066 | } | |
9067 | else | |
9068 | { | |
9069 | case REG: | |
9070 | case SUBREG: | |
9071 | case CONCAT: | |
9072 | descr = loc_descriptor (rtl); | |
9073 | } | |
9074 | add_AT_location_description (die, DW_AT_location, descr); | |
a3f97cbb | 9075 | break; |
b9203463 | 9076 | |
a3f97cbb | 9077 | default: |
71dfc51f | 9078 | abort (); |
a3f97cbb JW |
9079 | } |
9080 | } | |
9081 | ||
1bfb5f8f JM |
9082 | /* If we don't have a copy of this variable in memory for some reason (such |
9083 | as a C++ member constant that doesn't have an out-of-line definition), | |
9084 | we should tell the debugger about the constant value. */ | |
9085 | ||
9086 | static void | |
9087 | tree_add_const_value_attribute (var_die, decl) | |
9088 | dw_die_ref var_die; | |
9089 | tree decl; | |
9090 | { | |
9091 | tree init = DECL_INITIAL (decl); | |
9092 | tree type = TREE_TYPE (decl); | |
9093 | ||
9094 | if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl) && init | |
9095 | && initializer_constant_valid_p (init, type) == null_pointer_node) | |
9096 | /* OK */; | |
9097 | else | |
9098 | return; | |
9099 | ||
9100 | switch (TREE_CODE (type)) | |
9101 | { | |
9102 | case INTEGER_TYPE: | |
9103 | if (host_integerp (init, 0)) | |
9104 | add_AT_unsigned (var_die, DW_AT_const_value, | |
2ad9852d | 9105 | tree_low_cst (init, 0)); |
1bfb5f8f JM |
9106 | else |
9107 | add_AT_long_long (var_die, DW_AT_const_value, | |
9108 | TREE_INT_CST_HIGH (init), | |
9109 | TREE_INT_CST_LOW (init)); | |
9110 | break; | |
9111 | ||
9112 | default:; | |
9113 | } | |
9114 | } | |
0b34cf1e | 9115 | |
a3f97cbb JW |
9116 | /* Generate an DW_AT_name attribute given some string value to be included as |
9117 | the value of the attribute. */ | |
71dfc51f RK |
9118 | |
9119 | static inline void | |
a3f97cbb | 9120 | add_name_attribute (die, name_string) |
b3694847 SS |
9121 | dw_die_ref die; |
9122 | const char *name_string; | |
a3f97cbb | 9123 | { |
71dfc51f | 9124 | if (name_string != NULL && *name_string != 0) |
14a774a9 RK |
9125 | { |
9126 | if (demangle_name_func) | |
9127 | name_string = (*demangle_name_func) (name_string); | |
9128 | ||
9129 | add_AT_string (die, DW_AT_name, name_string); | |
9130 | } | |
a3f97cbb JW |
9131 | } |
9132 | ||
9133 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 9134 | a representation for that bound. */ |
71dfc51f | 9135 | |
a3f97cbb JW |
9136 | static void |
9137 | add_bound_info (subrange_die, bound_attr, bound) | |
b3694847 SS |
9138 | dw_die_ref subrange_die; |
9139 | enum dwarf_attribute bound_attr; | |
9140 | tree bound; | |
a3f97cbb | 9141 | { |
a3f97cbb JW |
9142 | switch (TREE_CODE (bound)) |
9143 | { | |
9144 | case ERROR_MARK: | |
9145 | return; | |
9146 | ||
3ef42a0c | 9147 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ |
a3f97cbb | 9148 | case INTEGER_CST: |
665f2503 RK |
9149 | if (! host_integerp (bound, 0) |
9150 | || (bound_attr == DW_AT_lower_bound | |
28985b81 | 9151 | && (((is_c_family () || is_java ()) && integer_zerop (bound)) |
665f2503 RK |
9152 | || (is_fortran () && integer_onep (bound))))) |
9153 | /* use the default */ | |
9154 | ; | |
141719a8 | 9155 | else |
665f2503 | 9156 | add_AT_unsigned (subrange_die, bound_attr, tree_low_cst (bound, 0)); |
a3f97cbb JW |
9157 | break; |
9158 | ||
b1ccbc24 | 9159 | case CONVERT_EXPR: |
a3f97cbb | 9160 | case NOP_EXPR: |
b1ccbc24 | 9161 | case NON_LVALUE_EXPR: |
ed239f5a | 9162 | case VIEW_CONVERT_EXPR: |
b1ccbc24 RK |
9163 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); |
9164 | break; | |
556273e0 | 9165 | |
a3f97cbb JW |
9166 | case SAVE_EXPR: |
9167 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
9168 | access the upper bound values may be bogus. If they refer to a |
9169 | register, they may only describe how to get at these values at the | |
9170 | points in the generated code right after they have just been | |
9171 | computed. Worse yet, in the typical case, the upper bound values | |
9172 | will not even *be* computed in the optimized code (though the | |
9173 | number of elements will), so these SAVE_EXPRs are entirely | |
9174 | bogus. In order to compensate for this fact, we check here to see | |
9175 | if optimization is enabled, and if so, we don't add an attribute | |
9176 | for the (unknown and unknowable) upper bound. This should not | |
9177 | cause too much trouble for existing (stupid?) debuggers because | |
9178 | they have to deal with empty upper bounds location descriptions | |
9179 | anyway in order to be able to deal with incomplete array types. | |
9180 | Of course an intelligent debugger (GDB?) should be able to | |
4fe9b91c | 9181 | comprehend that a missing upper bound specification in an array |
466446b0 JM |
9182 | type used for a storage class `auto' local array variable |
9183 | indicates that the upper bound is both unknown (at compile- time) | |
9184 | and unknowable (at run-time) due to optimization. | |
9185 | ||
9186 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
9187 | value there unless it was going to be used repeatedly in the | |
9188 | function, i.e. for cleanups. */ | |
1edf43d6 JM |
9189 | if (SAVE_EXPR_RTL (bound) |
9190 | && (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM)) | |
a3f97cbb | 9191 | { |
b3694847 | 9192 | dw_die_ref ctx = lookup_decl_die (current_function_decl); |
54ba1f0d | 9193 | dw_die_ref decl_die = new_die (DW_TAG_variable, ctx, bound); |
b3694847 | 9194 | rtx loc = SAVE_EXPR_RTL (bound); |
f5963e61 JL |
9195 | |
9196 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
9197 | it references an outer function's frame. */ | |
f5963e61 JL |
9198 | if (GET_CODE (loc) == MEM) |
9199 | { | |
9200 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
9201 | ||
9202 | if (XEXP (loc, 0) != new_addr) | |
c5c76735 | 9203 | loc = gen_rtx_MEM (GET_MODE (loc), new_addr); |
f5963e61 JL |
9204 | } |
9205 | ||
466446b0 JM |
9206 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
9207 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
b9203463 RH |
9208 | add_AT_location_description (decl_die, DW_AT_location, |
9209 | loc_descriptor (loc)); | |
466446b0 | 9210 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 9211 | } |
71dfc51f RK |
9212 | |
9213 | /* Else leave out the attribute. */ | |
a3f97cbb | 9214 | break; |
3f76745e | 9215 | |
ef76d03b | 9216 | case VAR_DECL: |
d8041cc8 RH |
9217 | case PARM_DECL: |
9218 | { | |
9219 | dw_die_ref decl_die = lookup_decl_die (bound); | |
9220 | ||
9221 | /* ??? Can this happen, or should the variable have been bound | |
9222 | first? Probably it can, since I imagine that we try to create | |
9223 | the types of parameters in the order in which they exist in | |
0b34cf1e | 9224 | the list, and won't have created a forward reference to a |
d8041cc8 RH |
9225 | later parameter. */ |
9226 | if (decl_die != NULL) | |
9227 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
9228 | break; | |
9229 | } | |
ef76d03b | 9230 | |
3f76745e | 9231 | default: |
d8041cc8 RH |
9232 | { |
9233 | /* Otherwise try to create a stack operation procedure to | |
9234 | evaluate the value of the array bound. */ | |
9235 | ||
9236 | dw_die_ref ctx, decl_die; | |
9237 | dw_loc_descr_ref loc; | |
9238 | ||
9239 | loc = loc_descriptor_from_tree (bound, 0); | |
9240 | if (loc == NULL) | |
9241 | break; | |
9242 | ||
e7af1d45 RK |
9243 | if (current_function_decl == 0) |
9244 | ctx = comp_unit_die; | |
9245 | else | |
9246 | ctx = lookup_decl_die (current_function_decl); | |
d8041cc8 | 9247 | |
aea9695c RK |
9248 | /* If we weren't able to find a context, it's most likely the case |
9249 | that we are processing the return type of the function. So | |
9250 | make a SAVE_EXPR to point to it and have the limbo DIE code | |
9251 | find the proper die. The save_expr function doesn't always | |
9252 | make a SAVE_EXPR, so do it ourselves. */ | |
9253 | if (ctx == 0) | |
9254 | bound = build (SAVE_EXPR, TREE_TYPE (bound), bound, | |
9255 | current_function_decl, NULL_TREE); | |
9256 | ||
54ba1f0d | 9257 | decl_die = new_die (DW_TAG_variable, ctx, bound); |
d8041cc8 RH |
9258 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
9259 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
9260 | add_AT_loc (decl_die, DW_AT_location, loc); | |
9261 | ||
9262 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
9263 | break; | |
9264 | } | |
a3f97cbb JW |
9265 | } |
9266 | } | |
9267 | ||
9268 | /* Note that the block of subscript information for an array type also | |
9269 | includes information about the element type of type given array type. */ | |
71dfc51f | 9270 | |
a3f97cbb JW |
9271 | static void |
9272 | add_subscript_info (type_die, type) | |
b3694847 SS |
9273 | dw_die_ref type_die; |
9274 | tree type; | |
a3f97cbb | 9275 | { |
081f5e7e | 9276 | #ifndef MIPS_DEBUGGING_INFO |
b3694847 | 9277 | unsigned dimension_number; |
081f5e7e | 9278 | #endif |
b3694847 SS |
9279 | tree lower, upper; |
9280 | dw_die_ref subrange_die; | |
a3f97cbb | 9281 | |
556273e0 | 9282 | /* The GNU compilers represent multidimensional array types as sequences of |
a3f97cbb JW |
9283 | one dimensional array types whose element types are themselves array |
9284 | types. Here we squish that down, so that each multidimensional array | |
556273e0 | 9285 | type gets only one array_type DIE in the Dwarf debugging info. The draft |
a3f97cbb JW |
9286 | Dwarf specification say that we are allowed to do this kind of |
9287 | compression in C (because there is no difference between an array or | |
556273e0 | 9288 | arrays and a multidimensional array in C) but for other source languages |
a3f97cbb | 9289 | (e.g. Ada) we probably shouldn't do this. */ |
71dfc51f | 9290 | |
a3f97cbb JW |
9291 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
9292 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
9293 | We work around this by disabling this feature. See also | |
9294 | gen_array_type_die. */ | |
9295 | #ifndef MIPS_DEBUGGING_INFO | |
9296 | for (dimension_number = 0; | |
9297 | TREE_CODE (type) == ARRAY_TYPE; | |
9298 | type = TREE_TYPE (type), dimension_number++) | |
a3f97cbb | 9299 | #endif |
2ad9852d | 9300 | { |
b3694847 | 9301 | tree domain = TYPE_DOMAIN (type); |
a3f97cbb JW |
9302 | |
9303 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
556273e0 | 9304 | and (in GNU C only) variable bounds. Handle all three forms |
a3f97cbb | 9305 | here. */ |
54ba1f0d | 9306 | subrange_die = new_die (DW_TAG_subrange_type, type_die, NULL); |
a3f97cbb JW |
9307 | if (domain) |
9308 | { | |
9309 | /* We have an array type with specified bounds. */ | |
9310 | lower = TYPE_MIN_VALUE (domain); | |
9311 | upper = TYPE_MAX_VALUE (domain); | |
9312 | ||
a9d38797 JM |
9313 | /* define the index type. */ |
9314 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
9315 | { |
9316 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
9317 | TREE_TYPE field. We can't emit debug info for this | |
9318 | because it is an unnamed integral type. */ | |
9319 | if (TREE_CODE (domain) == INTEGER_TYPE | |
9320 | && TYPE_NAME (domain) == NULL_TREE | |
9321 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
9322 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
556273e0 | 9323 | ; |
ef76d03b JW |
9324 | else |
9325 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
9326 | type_die); | |
9327 | } | |
a9d38797 | 9328 | |
e1ee5cdc RH |
9329 | /* ??? If upper is NULL, the array has unspecified length, |
9330 | but it does have a lower bound. This happens with Fortran | |
9331 | dimension arr(N:*) | |
9332 | Since the debugger is definitely going to need to know N | |
9333 | to produce useful results, go ahead and output the lower | |
9334 | bound solo, and hope the debugger can cope. */ | |
9335 | ||
141719a8 | 9336 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
9337 | if (upper) |
9338 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb | 9339 | } |
71dfc51f | 9340 | |
2ad9852d RK |
9341 | /* Otherwise we have an array type with an unspecified length. The |
9342 | DWARF-2 spec does not say how to handle this; let's just leave out the | |
9343 | bounds. */ | |
a3f97cbb | 9344 | } |
a3f97cbb JW |
9345 | } |
9346 | ||
9347 | static void | |
9348 | add_byte_size_attribute (die, tree_node) | |
9349 | dw_die_ref die; | |
b3694847 | 9350 | tree tree_node; |
a3f97cbb | 9351 | { |
b3694847 | 9352 | unsigned size; |
a3f97cbb JW |
9353 | |
9354 | switch (TREE_CODE (tree_node)) | |
9355 | { | |
9356 | case ERROR_MARK: | |
9357 | size = 0; | |
9358 | break; | |
9359 | case ENUMERAL_TYPE: | |
9360 | case RECORD_TYPE: | |
9361 | case UNION_TYPE: | |
9362 | case QUAL_UNION_TYPE: | |
9363 | size = int_size_in_bytes (tree_node); | |
9364 | break; | |
9365 | case FIELD_DECL: | |
9366 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
9367 | generally given as the number of bytes normally allocated for an | |
9368 | object of the *declared* type of the member itself. This is true | |
9369 | even for bit-fields. */ | |
9370 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
9371 | break; | |
9372 | default: | |
9373 | abort (); | |
9374 | } | |
9375 | ||
9376 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
9377 | indicates that the byte size of the entity in question is variable. We | |
9378 | have no good way of expressing this fact in Dwarf at the present time, | |
9379 | so just let the -1 pass on through. */ | |
a3f97cbb JW |
9380 | add_AT_unsigned (die, DW_AT_byte_size, size); |
9381 | } | |
9382 | ||
9383 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
9384 | which specifies the distance in bits from the highest order bit of the | |
9385 | "containing object" for the bit-field to the highest order bit of the | |
9386 | bit-field itself. | |
9387 | ||
2ad9852d RK |
9388 | For any given bit-field, the "containing object" is a hypothetical object |
9389 | (of some integral or enum type) within which the given bit-field lives. The | |
9390 | type of this hypothetical "containing object" is always the same as the | |
9391 | declared type of the individual bit-field itself. The determination of the | |
9392 | exact location of the "containing object" for a bit-field is rather | |
9393 | complicated. It's handled by the `field_byte_offset' function (above). | |
a3f97cbb JW |
9394 | |
9395 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
9396 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
9397 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
9398 | |
9399 | static inline void | |
a3f97cbb | 9400 | add_bit_offset_attribute (die, decl) |
b3694847 SS |
9401 | dw_die_ref die; |
9402 | tree decl; | |
a3f97cbb | 9403 | { |
665f2503 RK |
9404 | HOST_WIDE_INT object_offset_in_bytes = field_byte_offset (decl); |
9405 | tree type = DECL_BIT_FIELD_TYPE (decl); | |
9406 | HOST_WIDE_INT bitpos_int; | |
9407 | HOST_WIDE_INT highest_order_object_bit_offset; | |
9408 | HOST_WIDE_INT highest_order_field_bit_offset; | |
9409 | HOST_WIDE_INT unsigned bit_offset; | |
a3f97cbb | 9410 | |
3a88cbd1 JL |
9411 | /* Must be a field and a bit field. */ |
9412 | if (!type | |
9413 | || TREE_CODE (decl) != FIELD_DECL) | |
9414 | abort (); | |
a3f97cbb JW |
9415 | |
9416 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
9417 | encounter such things, just return without generating any attribute | |
665f2503 RK |
9418 | whatsoever. Likewise for variable or too large size. */ |
9419 | if (! host_integerp (bit_position (decl), 0) | |
9420 | || ! host_integerp (DECL_SIZE (decl), 1)) | |
71dfc51f RK |
9421 | return; |
9422 | ||
665f2503 | 9423 | bitpos_int = int_bit_position (decl); |
a3f97cbb JW |
9424 | |
9425 | /* Note that the bit offset is always the distance (in bits) from the | |
556273e0 KH |
9426 | highest-order bit of the "containing object" to the highest-order bit of |
9427 | the bit-field itself. Since the "high-order end" of any object or field | |
a3f97cbb JW |
9428 | is different on big-endian and little-endian machines, the computation |
9429 | below must take account of these differences. */ | |
9430 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
9431 | highest_order_field_bit_offset = bitpos_int; | |
9432 | ||
71dfc51f | 9433 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb | 9434 | { |
665f2503 | 9435 | highest_order_field_bit_offset += tree_low_cst (DECL_SIZE (decl), 0); |
a3f97cbb JW |
9436 | highest_order_object_bit_offset += simple_type_size_in_bits (type); |
9437 | } | |
71dfc51f RK |
9438 | |
9439 | bit_offset | |
9440 | = (! BYTES_BIG_ENDIAN | |
9441 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
9442 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
9443 | |
9444 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
9445 | } | |
9446 | ||
9447 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
9448 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
9449 | |
9450 | static inline void | |
a3f97cbb | 9451 | add_bit_size_attribute (die, decl) |
b3694847 SS |
9452 | dw_die_ref die; |
9453 | tree decl; | |
a3f97cbb | 9454 | { |
3a88cbd1 JL |
9455 | /* Must be a field and a bit field. */ |
9456 | if (TREE_CODE (decl) != FIELD_DECL | |
9457 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
9458 | abort (); | |
665f2503 RK |
9459 | |
9460 | if (host_integerp (DECL_SIZE (decl), 1)) | |
9461 | add_AT_unsigned (die, DW_AT_bit_size, tree_low_cst (DECL_SIZE (decl), 1)); | |
a3f97cbb JW |
9462 | } |
9463 | ||
88dad228 | 9464 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 9465 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
9466 | |
9467 | static inline void | |
a3f97cbb | 9468 | add_prototyped_attribute (die, func_type) |
b3694847 SS |
9469 | dw_die_ref die; |
9470 | tree func_type; | |
a3f97cbb | 9471 | { |
88dad228 JM |
9472 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
9473 | && TYPE_ARG_TYPES (func_type) != NULL) | |
9474 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
9475 | } |
9476 | ||
a3f97cbb JW |
9477 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found |
9478 | by looking in either the type declaration or object declaration | |
9479 | equate table. */ | |
71dfc51f RK |
9480 | |
9481 | static inline void | |
a3f97cbb | 9482 | add_abstract_origin_attribute (die, origin) |
b3694847 SS |
9483 | dw_die_ref die; |
9484 | tree origin; | |
a3f97cbb JW |
9485 | { |
9486 | dw_die_ref origin_die = NULL; | |
bbc6ae08 | 9487 | |
d10b8e05 | 9488 | if (TREE_CODE (origin) != FUNCTION_DECL) |
e40a1c67 JM |
9489 | { |
9490 | /* We may have gotten separated from the block for the inlined | |
9491 | function, if we're in an exception handler or some such; make | |
9492 | sure that the abstract function has been written out. | |
9493 | ||
9494 | Doing this for nested functions is wrong, however; functions are | |
9495 | distinct units, and our context might not even be inline. */ | |
fb13d4d0 | 9496 | tree fn = origin; |
2ad9852d | 9497 | |
fb13d4d0 JM |
9498 | if (TYPE_P (fn)) |
9499 | fn = TYPE_STUB_DECL (fn); | |
2ad9852d | 9500 | |
fb13d4d0 | 9501 | fn = decl_function_context (fn); |
e40a1c67 | 9502 | if (fn) |
1edf43d6 | 9503 | dwarf2out_abstract_function (fn); |
e40a1c67 | 9504 | } |
44db1d9c | 9505 | |
2f939d94 | 9506 | if (DECL_P (origin)) |
71dfc51f | 9507 | origin_die = lookup_decl_die (origin); |
2f939d94 | 9508 | else if (TYPE_P (origin)) |
71dfc51f RK |
9509 | origin_die = lookup_type_die (origin); |
9510 | ||
bbc6ae08 | 9511 | if (origin_die == NULL) |
1ae8994f | 9512 | abort (); |
556273e0 | 9513 | |
a3f97cbb JW |
9514 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
9515 | } | |
9516 | ||
bdb669cb JM |
9517 | /* We do not currently support the pure_virtual attribute. */ |
9518 | ||
71dfc51f | 9519 | static inline void |
a3f97cbb | 9520 | add_pure_or_virtual_attribute (die, func_decl) |
b3694847 SS |
9521 | dw_die_ref die; |
9522 | tree func_decl; | |
a3f97cbb | 9523 | { |
a94dbf2c | 9524 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 9525 | { |
bdb669cb | 9526 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
665f2503 RK |
9527 | |
9528 | if (host_integerp (DECL_VINDEX (func_decl), 0)) | |
9529 | add_AT_loc (die, DW_AT_vtable_elem_location, | |
9530 | new_loc_descr (DW_OP_constu, | |
9531 | tree_low_cst (DECL_VINDEX (func_decl), 0), | |
9532 | 0)); | |
71dfc51f | 9533 | |
a94dbf2c JM |
9534 | /* GNU extension: Record what type this method came from originally. */ |
9535 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
9536 | add_AT_die_ref (die, DW_AT_containing_type, | |
9537 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
9538 | } |
9539 | } | |
9540 | \f | |
b2932ae5 | 9541 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 9542 | |
b2932ae5 JM |
9543 | static void |
9544 | add_src_coords_attributes (die, decl) | |
b3694847 SS |
9545 | dw_die_ref die; |
9546 | tree decl; | |
b2932ae5 | 9547 | { |
b3694847 | 9548 | unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); |
71dfc51f | 9549 | |
b2932ae5 JM |
9550 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
9551 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
9552 | } | |
9553 | ||
a3f97cbb JW |
9554 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
9555 | given decl, but only if it actually has a name. */ | |
71dfc51f | 9556 | |
a3f97cbb JW |
9557 | static void |
9558 | add_name_and_src_coords_attributes (die, decl) | |
b3694847 SS |
9559 | dw_die_ref die; |
9560 | tree decl; | |
a3f97cbb | 9561 | { |
b3694847 | 9562 | tree decl_name; |
71dfc51f | 9563 | |
556273e0 | 9564 | decl_name = DECL_NAME (decl); |
71dfc51f | 9565 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 9566 | { |
a1d7ffe3 | 9567 | add_name_attribute (die, dwarf2_name (decl, 0)); |
a96c67ec JM |
9568 | if (! DECL_ARTIFICIAL (decl)) |
9569 | add_src_coords_attributes (die, decl); | |
e689ae67 | 9570 | |
a1d7ffe3 | 9571 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
bc808e0b | 9572 | && TREE_PUBLIC (decl) |
5daf7c0a JM |
9573 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl) |
9574 | && !DECL_ABSTRACT (decl)) | |
a1d7ffe3 JM |
9575 | add_AT_string (die, DW_AT_MIPS_linkage_name, |
9576 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb | 9577 | } |
7a0c8d71 DR |
9578 | |
9579 | #ifdef VMS_DEBUGGING_INFO | |
7a0c8d71 DR |
9580 | /* Get the function's name, as described by its RTL. This may be different |
9581 | from the DECL_NAME name used in the source file. */ | |
9582 | if (TREE_CODE (decl) == FUNCTION_DECL && TREE_ASM_WRITTEN (decl)) | |
c470afad RK |
9583 | { |
9584 | add_AT_addr (die, DW_AT_VMS_rtnbeg_pd_address, | |
9585 | XEXP (DECL_RTL (decl), 0)); | |
9586 | VARRAY_PUSH_RTX (used_rtx_varray, XEXP (DECL_RTL (decl), 0)); | |
9587 | } | |
7a0c8d71 | 9588 | #endif |
a3f97cbb JW |
9589 | } |
9590 | ||
556273e0 | 9591 | /* Push a new declaration scope. */ |
71dfc51f | 9592 | |
a3f97cbb JW |
9593 | static void |
9594 | push_decl_scope (scope) | |
9595 | tree scope; | |
9596 | { | |
244a4af0 | 9597 | VARRAY_PUSH_TREE (decl_scope_table, scope); |
a3f97cbb JW |
9598 | } |
9599 | ||
777ad4c2 | 9600 | /* Pop a declaration scope. */ |
2ad9852d | 9601 | |
777ad4c2 JM |
9602 | static inline void |
9603 | pop_decl_scope () | |
9604 | { | |
244a4af0 | 9605 | if (VARRAY_ACTIVE_SIZE (decl_scope_table) <= 0) |
777ad4c2 | 9606 | abort (); |
2ad9852d | 9607 | |
244a4af0 | 9608 | VARRAY_POP (decl_scope_table); |
777ad4c2 JM |
9609 | } |
9610 | ||
9611 | /* Return the DIE for the scope that immediately contains this type. | |
9612 | Non-named types get global scope. Named types nested in other | |
9613 | types get their containing scope if it's open, or global scope | |
9614 | otherwise. All other types (i.e. function-local named types) get | |
9615 | the current active scope. */ | |
71dfc51f | 9616 | |
a3f97cbb | 9617 | static dw_die_ref |
ab72d377 | 9618 | scope_die_for (t, context_die) |
b3694847 SS |
9619 | tree t; |
9620 | dw_die_ref context_die; | |
a3f97cbb | 9621 | { |
b3694847 SS |
9622 | dw_die_ref scope_die = NULL; |
9623 | tree containing_scope; | |
9624 | int i; | |
a3f97cbb | 9625 | |
777ad4c2 JM |
9626 | /* Non-types always go in the current scope. */ |
9627 | if (! TYPE_P (t)) | |
9628 | abort (); | |
9629 | ||
9630 | containing_scope = TYPE_CONTEXT (t); | |
ab72d377 | 9631 | |
2addbe1d JM |
9632 | /* Ignore namespaces for the moment. */ |
9633 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
9634 | containing_scope = NULL_TREE; | |
9635 | ||
5f2f160c JM |
9636 | /* Ignore function type "scopes" from the C frontend. They mean that |
9637 | a tagged type is local to a parmlist of a function declarator, but | |
9638 | that isn't useful to DWARF. */ | |
9639 | if (containing_scope && TREE_CODE (containing_scope) == FUNCTION_TYPE) | |
9640 | containing_scope = NULL_TREE; | |
9641 | ||
71dfc51f RK |
9642 | if (containing_scope == NULL_TREE) |
9643 | scope_die = comp_unit_die; | |
777ad4c2 | 9644 | else if (TYPE_P (containing_scope)) |
348bb3c7 | 9645 | { |
777ad4c2 JM |
9646 | /* For types, we can just look up the appropriate DIE. But |
9647 | first we check to see if we're in the middle of emitting it | |
9648 | so we know where the new DIE should go. */ | |
244a4af0 TF |
9649 | for (i = VARRAY_ACTIVE_SIZE (decl_scope_table) - 1; i >= 0; --i) |
9650 | if (VARRAY_TREE (decl_scope_table, i) == containing_scope) | |
348bb3c7 JM |
9651 | break; |
9652 | ||
9653 | if (i < 0) | |
9654 | { | |
348bb3c7 JM |
9655 | if (debug_info_level > DINFO_LEVEL_TERSE |
9656 | && !TREE_ASM_WRITTEN (containing_scope)) | |
9657 | abort (); | |
9658 | ||
9659 | /* If none of the current dies are suitable, we get file scope. */ | |
9660 | scope_die = comp_unit_die; | |
9661 | } | |
9662 | else | |
777ad4c2 | 9663 | scope_die = lookup_type_die (containing_scope); |
348bb3c7 | 9664 | } |
a3f97cbb | 9665 | else |
777ad4c2 | 9666 | scope_die = context_die; |
71dfc51f | 9667 | |
a3f97cbb JW |
9668 | return scope_die; |
9669 | } | |
9670 | ||
2ad9852d | 9671 | /* Returns nonzero if CONTEXT_DIE is internal to a function. */ |
777ad4c2 JM |
9672 | |
9673 | static inline int | |
9674 | local_scope_p (context_die) | |
9675 | dw_die_ref context_die; | |
a3f97cbb | 9676 | { |
777ad4c2 JM |
9677 | for (; context_die; context_die = context_die->die_parent) |
9678 | if (context_die->die_tag == DW_TAG_inlined_subroutine | |
9679 | || context_die->die_tag == DW_TAG_subprogram) | |
9680 | return 1; | |
2ad9852d | 9681 | |
777ad4c2 | 9682 | return 0; |
a3f97cbb JW |
9683 | } |
9684 | ||
2ad9852d | 9685 | /* Returns nonzero if CONTEXT_DIE is a class. */ |
9765e357 JM |
9686 | |
9687 | static inline int | |
9688 | class_scope_p (context_die) | |
9689 | dw_die_ref context_die; | |
9690 | { | |
9691 | return (context_die | |
9692 | && (context_die->die_tag == DW_TAG_structure_type | |
9693 | || context_die->die_tag == DW_TAG_union_type)); | |
9694 | } | |
9695 | ||
a3f97cbb JW |
9696 | /* Many forms of DIEs require a "type description" attribute. This |
9697 | routine locates the proper "type descriptor" die for the type given | |
9698 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 9699 | |
a3f97cbb JW |
9700 | static void |
9701 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
b3694847 SS |
9702 | dw_die_ref object_die; |
9703 | tree type; | |
9704 | int decl_const; | |
9705 | int decl_volatile; | |
9706 | dw_die_ref context_die; | |
a3f97cbb | 9707 | { |
b3694847 SS |
9708 | enum tree_code code = TREE_CODE (type); |
9709 | dw_die_ref type_die = NULL; | |
a3f97cbb | 9710 | |
ef76d03b JW |
9711 | /* ??? If this type is an unnamed subrange type of an integral or |
9712 | floating-point type, use the inner type. This is because we have no | |
9713 | support for unnamed types in base_type_die. This can happen if this is | |
9714 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
9715 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
9716 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
9717 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
9718 | ||
2ad9852d RK |
9719 | if (code == ERROR_MARK |
9720 | /* Handle a special case. For functions whose return type is void, we | |
9721 | generate *no* type attribute. (Note that no object may have type | |
9722 | `void', so this only applies to function return types). */ | |
9723 | || code == VOID_TYPE) | |
b1ccbc24 | 9724 | return; |
a3f97cbb | 9725 | |
a3f97cbb JW |
9726 | type_die = modified_type_die (type, |
9727 | decl_const || TYPE_READONLY (type), | |
9728 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 9729 | context_die); |
2ad9852d | 9730 | |
a3f97cbb | 9731 | if (type_die != NULL) |
71dfc51f | 9732 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
9733 | } |
9734 | ||
9735 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
9736 | a pointer to the (string) tag name for the given type, or zero if the type | |
9737 | was declared without a tag. */ | |
71dfc51f | 9738 | |
d3e3972c | 9739 | static const char * |
a3f97cbb | 9740 | type_tag (type) |
b3694847 | 9741 | tree type; |
a3f97cbb | 9742 | { |
b3694847 | 9743 | const char *name = 0; |
a3f97cbb JW |
9744 | |
9745 | if (TYPE_NAME (type) != 0) | |
9746 | { | |
b3694847 | 9747 | tree t = 0; |
a3f97cbb JW |
9748 | |
9749 | /* Find the IDENTIFIER_NODE for the type name. */ | |
9750 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
9751 | t = TYPE_NAME (type); | |
bdb669cb | 9752 | |
556273e0 | 9753 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
a3f97cbb | 9754 | a TYPE_DECL node, regardless of whether or not a `typedef' was |
bdb669cb | 9755 | involved. */ |
a94dbf2c JM |
9756 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
9757 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 9758 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 9759 | |
a3f97cbb JW |
9760 | /* Now get the name as a string, or invent one. */ |
9761 | if (t != 0) | |
a94dbf2c | 9762 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 9763 | } |
71dfc51f | 9764 | |
a3f97cbb JW |
9765 | return (name == 0 || *name == '\0') ? 0 : name; |
9766 | } | |
9767 | ||
9768 | /* Return the type associated with a data member, make a special check | |
9769 | for bit field types. */ | |
71dfc51f RK |
9770 | |
9771 | static inline tree | |
a3f97cbb | 9772 | member_declared_type (member) |
b3694847 | 9773 | tree member; |
a3f97cbb | 9774 | { |
71dfc51f | 9775 | return (DECL_BIT_FIELD_TYPE (member) |
2ad9852d | 9776 | ? DECL_BIT_FIELD_TYPE (member) : TREE_TYPE (member)); |
a3f97cbb JW |
9777 | } |
9778 | ||
d291dd49 | 9779 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 9780 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 9781 | |
487a6e06 | 9782 | #if 0 |
d3e3972c | 9783 | static const char * |
d291dd49 | 9784 | decl_start_label (decl) |
b3694847 | 9785 | tree decl; |
a3f97cbb JW |
9786 | { |
9787 | rtx x; | |
d3e3972c | 9788 | const char *fnname; |
2ad9852d | 9789 | |
a3f97cbb JW |
9790 | x = DECL_RTL (decl); |
9791 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
9792 | abort (); |
9793 | ||
a3f97cbb JW |
9794 | x = XEXP (x, 0); |
9795 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
9796 | abort (); |
9797 | ||
a3f97cbb JW |
9798 | fnname = XSTR (x, 0); |
9799 | return fnname; | |
9800 | } | |
487a6e06 | 9801 | #endif |
a3f97cbb | 9802 | \f |
956d6950 | 9803 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 9804 | the compilation unit. Debugging information is collected by walking |
88dad228 | 9805 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
9806 | |
9807 | static void | |
9808 | gen_array_type_die (type, context_die) | |
b3694847 SS |
9809 | tree type; |
9810 | dw_die_ref context_die; | |
a3f97cbb | 9811 | { |
b3694847 SS |
9812 | dw_die_ref scope_die = scope_die_for (type, context_die); |
9813 | dw_die_ref array_die; | |
9814 | tree element_type; | |
bdb669cb | 9815 | |
a9d38797 JM |
9816 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
9817 | the inner array type comes before the outer array type. Thus we must | |
9818 | call gen_type_die before we call new_die. See below also. */ | |
9819 | #ifdef MIPS_DEBUGGING_INFO | |
9820 | gen_type_die (TREE_TYPE (type), context_die); | |
9821 | #endif | |
9822 | ||
54ba1f0d | 9823 | array_die = new_die (DW_TAG_array_type, scope_die, type); |
84f0ace0 JM |
9824 | add_name_attribute (array_die, type_tag (type)); |
9825 | equate_type_number_to_die (type, array_die); | |
9826 | ||
9827 | if (TREE_CODE (type) == VECTOR_TYPE) | |
9828 | { | |
9829 | /* The frontend feeds us a representation for the vector as a struct | |
9830 | containing an array. Pull out the array type. */ | |
9831 | type = TREE_TYPE (TYPE_FIELDS (TYPE_DEBUG_REPRESENTATION_TYPE (type))); | |
9832 | add_AT_flag (array_die, DW_AT_GNU_vector, 1); | |
9833 | } | |
a9d38797 | 9834 | |
a3f97cbb JW |
9835 | #if 0 |
9836 | /* We default the array ordering. SDB will probably do | |
9837 | the right things even if DW_AT_ordering is not present. It's not even | |
9838 | an issue until we start to get into multidimensional arrays anyway. If | |
9839 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
9840 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
9841 | and when we find out that we need to put these in, we will only do so | |
9842 | for multidimensional arrays. */ | |
9843 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
9844 | #endif | |
9845 | ||
a9d38797 | 9846 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
9847 | /* The SGI compilers handle arrays of unknown bound by setting |
9848 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
9849 | if (! TYPE_DOMAIN (type)) |
9850 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
9851 | else | |
9852 | #endif | |
9853 | add_subscript_info (array_die, type); | |
a3f97cbb | 9854 | |
a3f97cbb JW |
9855 | /* Add representation of the type of the elements of this array type. */ |
9856 | element_type = TREE_TYPE (type); | |
71dfc51f | 9857 | |
a3f97cbb JW |
9858 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
9859 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
9860 | We work around this by disabling this feature. See also | |
9861 | add_subscript_info. */ | |
9862 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
9863 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
9864 | element_type = TREE_TYPE (element_type); | |
9865 | ||
a3f97cbb | 9866 | gen_type_die (element_type, context_die); |
a9d38797 | 9867 | #endif |
a3f97cbb JW |
9868 | |
9869 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
9870 | } | |
9871 | ||
9872 | static void | |
9873 | gen_set_type_die (type, context_die) | |
b3694847 SS |
9874 | tree type; |
9875 | dw_die_ref context_die; | |
a3f97cbb | 9876 | { |
b3694847 | 9877 | dw_die_ref type_die |
54ba1f0d | 9878 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die), type); |
71dfc51f | 9879 | |
a3f97cbb | 9880 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
9881 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
9882 | } | |
9883 | ||
d6f4ec51 | 9884 | #if 0 |
a3f97cbb JW |
9885 | static void |
9886 | gen_entry_point_die (decl, context_die) | |
b3694847 SS |
9887 | tree decl; |
9888 | dw_die_ref context_die; | |
a3f97cbb | 9889 | { |
b3694847 | 9890 | tree origin = decl_ultimate_origin (decl); |
54ba1f0d | 9891 | dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die, decl); |
2ad9852d | 9892 | |
a3f97cbb | 9893 | if (origin != NULL) |
71dfc51f | 9894 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
9895 | else |
9896 | { | |
9897 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
9898 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
9899 | 0, 0, context_die); | |
9900 | } | |
71dfc51f | 9901 | |
a3f97cbb | 9902 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 9903 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 9904 | else |
71dfc51f | 9905 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 9906 | } |
d6f4ec51 | 9907 | #endif |
a3f97cbb | 9908 | |
8a8c3656 JM |
9909 | /* Walk through the list of incomplete types again, trying once more to |
9910 | emit full debugging info for them. */ | |
9911 | ||
9912 | static void | |
9913 | retry_incomplete_types () | |
9914 | { | |
244a4af0 | 9915 | int i; |
2ad9852d | 9916 | |
244a4af0 | 9917 | for (i = VARRAY_ACTIVE_SIZE (incomplete_types) - 1; i >= 0; i--) |
2ad9852d | 9918 | gen_type_die (VARRAY_TREE (incomplete_types, i), comp_unit_die); |
8a8c3656 JM |
9919 | } |
9920 | ||
a3f97cbb | 9921 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 9922 | |
a3f97cbb JW |
9923 | static void |
9924 | gen_inlined_enumeration_type_die (type, context_die) | |
b3694847 SS |
9925 | tree type; |
9926 | dw_die_ref context_die; | |
a3f97cbb | 9927 | { |
54ba1f0d | 9928 | dw_die_ref type_die = new_die (DW_TAG_enumeration_type, context_die, type); |
2ad9852d | 9929 | |
bbc6ae08 NC |
9930 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9931 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9932 | add_abstract_origin_attribute (type_die, type); |
9933 | } | |
9934 | ||
9935 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 9936 | |
a3f97cbb JW |
9937 | static void |
9938 | gen_inlined_structure_type_die (type, context_die) | |
b3694847 SS |
9939 | tree type; |
9940 | dw_die_ref context_die; | |
a3f97cbb | 9941 | { |
54ba1f0d | 9942 | dw_die_ref type_die = new_die (DW_TAG_structure_type, context_die, type); |
777ad4c2 | 9943 | |
bbc6ae08 NC |
9944 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9945 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9946 | add_abstract_origin_attribute (type_die, type); |
9947 | } | |
9948 | ||
9949 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 9950 | |
a3f97cbb JW |
9951 | static void |
9952 | gen_inlined_union_type_die (type, context_die) | |
b3694847 SS |
9953 | tree type; |
9954 | dw_die_ref context_die; | |
a3f97cbb | 9955 | { |
54ba1f0d | 9956 | dw_die_ref type_die = new_die (DW_TAG_union_type, context_die, type); |
777ad4c2 | 9957 | |
bbc6ae08 NC |
9958 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9959 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9960 | add_abstract_origin_attribute (type_die, type); |
9961 | } | |
9962 | ||
9963 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
9964 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
9965 | enumerated type name/value is listed as a child of the enumerated type |
9966 | DIE. */ | |
71dfc51f | 9967 | |
a3f97cbb | 9968 | static void |
273dbe67 | 9969 | gen_enumeration_type_die (type, context_die) |
b3694847 SS |
9970 | tree type; |
9971 | dw_die_ref context_die; | |
a3f97cbb | 9972 | { |
b3694847 | 9973 | dw_die_ref type_die = lookup_type_die (type); |
273dbe67 | 9974 | |
a3f97cbb JW |
9975 | if (type_die == NULL) |
9976 | { | |
9977 | type_die = new_die (DW_TAG_enumeration_type, | |
54ba1f0d | 9978 | scope_die_for (type, context_die), type); |
a3f97cbb JW |
9979 | equate_type_number_to_die (type, type_die); |
9980 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 9981 | } |
273dbe67 JM |
9982 | else if (! TYPE_SIZE (type)) |
9983 | return; | |
9984 | else | |
9985 | remove_AT (type_die, DW_AT_declaration); | |
9986 | ||
9987 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
9988 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
9989 | attribute or the DW_AT_element_list attribute. */ | |
9990 | if (TYPE_SIZE (type)) | |
a3f97cbb | 9991 | { |
b3694847 | 9992 | tree link; |
71dfc51f | 9993 | |
a082c85a | 9994 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 9995 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 9996 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 9997 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 9998 | |
ef76d03b JW |
9999 | /* If the first reference to this type was as the return type of an |
10000 | inline function, then it may not have a parent. Fix this now. */ | |
10001 | if (type_die->die_parent == NULL) | |
10002 | add_child_die (scope_die_for (type, context_die), type_die); | |
10003 | ||
273dbe67 JM |
10004 | for (link = TYPE_FIELDS (type); |
10005 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 10006 | { |
54ba1f0d | 10007 | dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die, link); |
71dfc51f | 10008 | |
273dbe67 JM |
10009 | add_name_attribute (enum_die, |
10010 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
665f2503 RK |
10011 | |
10012 | if (host_integerp (TREE_VALUE (link), 0)) | |
fc9e8a14 JJ |
10013 | { |
10014 | if (tree_int_cst_sgn (TREE_VALUE (link)) < 0) | |
10015 | add_AT_int (enum_die, DW_AT_const_value, | |
10016 | tree_low_cst (TREE_VALUE (link), 0)); | |
10017 | else | |
10018 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
10019 | tree_low_cst (TREE_VALUE (link), 0)); | |
10020 | } | |
a3f97cbb JW |
10021 | } |
10022 | } | |
273dbe67 JM |
10023 | else |
10024 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
10025 | } |
10026 | ||
a3f97cbb JW |
10027 | /* Generate a DIE to represent either a real live formal parameter decl or to |
10028 | represent just the type of some formal parameter position in some function | |
10029 | type. | |
71dfc51f | 10030 | |
a3f97cbb JW |
10031 | Note that this routine is a bit unusual because its argument may be a |
10032 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
10033 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
10034 | node. If it's the former then this function is being called to output a | |
10035 | DIE to represent a formal parameter object (or some inlining thereof). If | |
10036 | it's the latter, then this function is only being called to output a | |
10037 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
10038 | argument type of some subprogram type. */ | |
71dfc51f | 10039 | |
a94dbf2c | 10040 | static dw_die_ref |
a3f97cbb | 10041 | gen_formal_parameter_die (node, context_die) |
b3694847 SS |
10042 | tree node; |
10043 | dw_die_ref context_die; | |
a3f97cbb | 10044 | { |
b3694847 | 10045 | dw_die_ref parm_die |
54ba1f0d | 10046 | = new_die (DW_TAG_formal_parameter, context_die, node); |
b3694847 | 10047 | tree origin; |
71dfc51f | 10048 | |
a3f97cbb JW |
10049 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
10050 | { | |
a3f97cbb JW |
10051 | case 'd': |
10052 | origin = decl_ultimate_origin (node); | |
10053 | if (origin != NULL) | |
a94dbf2c | 10054 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
10055 | else |
10056 | { | |
10057 | add_name_and_src_coords_attributes (parm_die, node); | |
10058 | add_type_attribute (parm_die, TREE_TYPE (node), | |
10059 | TREE_READONLY (node), | |
10060 | TREE_THIS_VOLATILE (node), | |
10061 | context_die); | |
bdb669cb JM |
10062 | if (DECL_ARTIFICIAL (node)) |
10063 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 10064 | } |
71dfc51f | 10065 | |
141719a8 JM |
10066 | equate_decl_number_to_die (node, parm_die); |
10067 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 10068 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 10069 | |
a3f97cbb JW |
10070 | break; |
10071 | ||
a3f97cbb | 10072 | case 't': |
71dfc51f | 10073 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
10074 | add_type_attribute (parm_die, node, 0, 0, context_die); |
10075 | break; | |
10076 | ||
a3f97cbb JW |
10077 | default: |
10078 | abort (); | |
10079 | } | |
71dfc51f | 10080 | |
a94dbf2c | 10081 | return parm_die; |
a3f97cbb JW |
10082 | } |
10083 | ||
10084 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
10085 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 10086 | |
a3f97cbb JW |
10087 | static void |
10088 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
54ba1f0d | 10089 | tree decl_or_type; |
b3694847 | 10090 | dw_die_ref context_die; |
a3f97cbb | 10091 | { |
54ba1f0d | 10092 | new_die (DW_TAG_unspecified_parameters, context_die, decl_or_type); |
a3f97cbb JW |
10093 | } |
10094 | ||
10095 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
10096 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
10097 | parameters as specified in some function type specification (except for | |
1cfdcc15 | 10098 | those which appear as part of a function *definition*). */ |
71dfc51f | 10099 | |
a3f97cbb JW |
10100 | static void |
10101 | gen_formal_types_die (function_or_method_type, context_die) | |
b3694847 SS |
10102 | tree function_or_method_type; |
10103 | dw_die_ref context_die; | |
a3f97cbb | 10104 | { |
b3694847 SS |
10105 | tree link; |
10106 | tree formal_type = NULL; | |
10107 | tree first_parm_type; | |
5daf7c0a | 10108 | tree arg; |
a3f97cbb | 10109 | |
5daf7c0a JM |
10110 | if (TREE_CODE (function_or_method_type) == FUNCTION_DECL) |
10111 | { | |
10112 | arg = DECL_ARGUMENTS (function_or_method_type); | |
10113 | function_or_method_type = TREE_TYPE (function_or_method_type); | |
10114 | } | |
10115 | else | |
10116 | arg = NULL_TREE; | |
c26fbbca | 10117 | |
5daf7c0a | 10118 | first_parm_type = TYPE_ARG_TYPES (function_or_method_type); |
a3f97cbb | 10119 | |
556273e0 | 10120 | /* Make our first pass over the list of formal parameter types and output a |
a3f97cbb | 10121 | DW_TAG_formal_parameter DIE for each one. */ |
5daf7c0a | 10122 | for (link = first_parm_type; link; ) |
a3f97cbb | 10123 | { |
b3694847 | 10124 | dw_die_ref parm_die; |
556273e0 | 10125 | |
a3f97cbb JW |
10126 | formal_type = TREE_VALUE (link); |
10127 | if (formal_type == void_type_node) | |
10128 | break; | |
10129 | ||
10130 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c | 10131 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
5daf7c0a JM |
10132 | if ((TREE_CODE (function_or_method_type) == METHOD_TYPE |
10133 | && link == first_parm_type) | |
10134 | || (arg && DECL_ARTIFICIAL (arg))) | |
a94dbf2c | 10135 | add_AT_flag (parm_die, DW_AT_artificial, 1); |
5daf7c0a JM |
10136 | |
10137 | link = TREE_CHAIN (link); | |
10138 | if (arg) | |
10139 | arg = TREE_CHAIN (arg); | |
a3f97cbb JW |
10140 | } |
10141 | ||
10142 | /* If this function type has an ellipsis, add a | |
10143 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
10144 | if (formal_type != void_type_node) | |
10145 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
10146 | ||
556273e0 | 10147 | /* Make our second (and final) pass over the list of formal parameter types |
a3f97cbb JW |
10148 | and output DIEs to represent those types (as necessary). */ |
10149 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
2ad9852d | 10150 | link && TREE_VALUE (link); |
a3f97cbb | 10151 | link = TREE_CHAIN (link)) |
2ad9852d | 10152 | gen_type_die (TREE_VALUE (link), context_die); |
a3f97cbb JW |
10153 | } |
10154 | ||
10a11b75 JM |
10155 | /* We want to generate the DIE for TYPE so that we can generate the |
10156 | die for MEMBER, which has been defined; we will need to refer back | |
10157 | to the member declaration nested within TYPE. If we're trying to | |
10158 | generate minimal debug info for TYPE, processing TYPE won't do the | |
10159 | trick; we need to attach the member declaration by hand. */ | |
10160 | ||
10161 | static void | |
10162 | gen_type_die_for_member (type, member, context_die) | |
10163 | tree type, member; | |
10164 | dw_die_ref context_die; | |
10165 | { | |
10166 | gen_type_die (type, context_die); | |
10167 | ||
10168 | /* If we're trying to avoid duplicate debug info, we may not have | |
10169 | emitted the member decl for this function. Emit it now. */ | |
10170 | if (TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)) | |
10171 | && ! lookup_decl_die (member)) | |
10172 | { | |
10173 | if (decl_ultimate_origin (member)) | |
10174 | abort (); | |
10175 | ||
10176 | push_decl_scope (type); | |
10177 | if (TREE_CODE (member) == FUNCTION_DECL) | |
10178 | gen_subprogram_die (member, lookup_type_die (type)); | |
10179 | else | |
10180 | gen_variable_die (member, lookup_type_die (type)); | |
2ad9852d | 10181 | |
10a11b75 JM |
10182 | pop_decl_scope (); |
10183 | } | |
10184 | } | |
10185 | ||
2ad9852d RK |
10186 | /* Generate the DWARF2 info for the "abstract" instance of a function which we |
10187 | may later generate inlined and/or out-of-line instances of. */ | |
10a11b75 | 10188 | |
e1772ac0 | 10189 | static void |
1edf43d6 | 10190 | dwarf2out_abstract_function (decl) |
10a11b75 JM |
10191 | tree decl; |
10192 | { | |
b3694847 | 10193 | dw_die_ref old_die; |
777ad4c2 | 10194 | tree save_fn; |
5daf7c0a JM |
10195 | tree context; |
10196 | int was_abstract = DECL_ABSTRACT (decl); | |
10197 | ||
10198 | /* Make sure we have the actual abstract inline, not a clone. */ | |
10199 | decl = DECL_ORIGIN (decl); | |
10a11b75 | 10200 | |
c26fbbca | 10201 | old_die = lookup_decl_die (decl); |
10a11b75 JM |
10202 | if (old_die && get_AT_unsigned (old_die, DW_AT_inline)) |
10203 | /* We've already generated the abstract instance. */ | |
10204 | return; | |
10205 | ||
5daf7c0a JM |
10206 | /* Be sure we've emitted the in-class declaration DIE (if any) first, so |
10207 | we don't get confused by DECL_ABSTRACT. */ | |
8458e954 JS |
10208 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10209 | { | |
10210 | context = decl_class_context (decl); | |
10211 | if (context) | |
10212 | gen_type_die_for_member | |
10213 | (context, decl, decl_function_context (decl) ? NULL : comp_unit_die); | |
10214 | } | |
c26fbbca | 10215 | |
5daf7c0a | 10216 | /* Pretend we've just finished compiling this function. */ |
777ad4c2 JM |
10217 | save_fn = current_function_decl; |
10218 | current_function_decl = decl; | |
10219 | ||
10a11b75 JM |
10220 | set_decl_abstract_flags (decl, 1); |
10221 | dwarf2out_decl (decl); | |
5daf7c0a JM |
10222 | if (! was_abstract) |
10223 | set_decl_abstract_flags (decl, 0); | |
777ad4c2 JM |
10224 | |
10225 | current_function_decl = save_fn; | |
10a11b75 JM |
10226 | } |
10227 | ||
a3f97cbb JW |
10228 | /* Generate a DIE to represent a declared function (either file-scope or |
10229 | block-local). */ | |
71dfc51f | 10230 | |
a3f97cbb JW |
10231 | static void |
10232 | gen_subprogram_die (decl, context_die) | |
b3694847 SS |
10233 | tree decl; |
10234 | dw_die_ref context_die; | |
a3f97cbb JW |
10235 | { |
10236 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
b3694847 SS |
10237 | tree origin = decl_ultimate_origin (decl); |
10238 | dw_die_ref subr_die; | |
10239 | rtx fp_reg; | |
10240 | tree fn_arg_types; | |
10241 | tree outer_scope; | |
10242 | dw_die_ref old_die = lookup_decl_die (decl); | |
10243 | int declaration = (current_function_decl != decl | |
10244 | || class_scope_p (context_die)); | |
a3f97cbb | 10245 | |
2ad9852d RK |
10246 | /* It is possible to have both DECL_ABSTRACT and DECLARATION be true if we |
10247 | started to generate the abstract instance of an inline, decided to output | |
10248 | its containing class, and proceeded to emit the declaration of the inline | |
10249 | from the member list for the class. If so, DECLARATION takes priority; | |
10250 | we'll get back to the abstract instance when done with the class. */ | |
10a11b75 | 10251 | |
1cfdcc15 JM |
10252 | /* The class-scope declaration DIE must be the primary DIE. */ |
10253 | if (origin && declaration && class_scope_p (context_die)) | |
10254 | { | |
10255 | origin = NULL; | |
10256 | if (old_die) | |
10257 | abort (); | |
10258 | } | |
10259 | ||
a3f97cbb JW |
10260 | if (origin != NULL) |
10261 | { | |
777ad4c2 | 10262 | if (declaration && ! local_scope_p (context_die)) |
10a11b75 JM |
10263 | abort (); |
10264 | ||
8d8238b6 JM |
10265 | /* Fixup die_parent for the abstract instance of a nested |
10266 | inline function. */ | |
10267 | if (old_die && old_die->die_parent == NULL) | |
10268 | add_child_die (context_die, old_die); | |
10269 | ||
54ba1f0d | 10270 | subr_die = new_die (DW_TAG_subprogram, context_die, decl); |
a3f97cbb JW |
10271 | add_abstract_origin_attribute (subr_die, origin); |
10272 | } | |
bdb669cb JM |
10273 | else if (old_die) |
10274 | { | |
981975b6 | 10275 | unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); |
a94dbf2c | 10276 | |
1edf43d6 JM |
10277 | if (!get_AT_flag (old_die, DW_AT_declaration) |
10278 | /* We can have a normal definition following an inline one in the | |
10279 | case of redefinition of GNU C extern inlines. | |
10280 | It seems reasonable to use AT_specification in this case. */ | |
10281 | && !get_AT_unsigned (old_die, DW_AT_inline)) | |
b75ab88b NC |
10282 | { |
10283 | /* ??? This can happen if there is a bug in the program, for | |
10284 | instance, if it has duplicate function definitions. Ideally, | |
10285 | we should detect this case and ignore it. For now, if we have | |
10286 | already reported an error, any error at all, then assume that | |
4fe9b91c | 10287 | we got here because of an input error, not a dwarf2 bug. */ |
b75ab88b NC |
10288 | if (errorcount) |
10289 | return; | |
10290 | abort (); | |
10291 | } | |
4b674448 JM |
10292 | |
10293 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
10294 | maybe use the old DIE. We always want the DIE for this function |
10295 | that has the *_pc attributes to be under comp_unit_die so the | |
cb9e9d8d JM |
10296 | debugger can find it. We also need to do this for abstract |
10297 | instances of inlines, since the spec requires the out-of-line copy | |
10298 | to have the same parent. For local class methods, this doesn't | |
10299 | apply; we just use the old DIE. */ | |
10300 | if ((old_die->die_parent == comp_unit_die || context_die == NULL) | |
a96c67ec JM |
10301 | && (DECL_ARTIFICIAL (decl) |
10302 | || (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
10303 | && (get_AT_unsigned (old_die, DW_AT_decl_line) | |
556273e0 | 10304 | == (unsigned) DECL_SOURCE_LINE (decl))))) |
bdb669cb | 10305 | { |
4b674448 JM |
10306 | subr_die = old_die; |
10307 | ||
10308 | /* Clear out the declaration attribute and the parm types. */ | |
10309 | remove_AT (subr_die, DW_AT_declaration); | |
10310 | remove_children (subr_die); | |
10311 | } | |
10312 | else | |
10313 | { | |
54ba1f0d | 10314 | subr_die = new_die (DW_TAG_subprogram, context_die, decl); |
4b674448 | 10315 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); |
bdb669cb JM |
10316 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
10317 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
10318 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
556273e0 | 10319 | != (unsigned) DECL_SOURCE_LINE (decl)) |
bdb669cb JM |
10320 | add_AT_unsigned |
10321 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
10322 | } | |
10323 | } | |
a3f97cbb JW |
10324 | else |
10325 | { | |
54ba1f0d | 10326 | subr_die = new_die (DW_TAG_subprogram, context_die, decl); |
556273e0 | 10327 | |
273dbe67 JM |
10328 | if (TREE_PUBLIC (decl)) |
10329 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 10330 | |
a3f97cbb | 10331 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
10332 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10333 | { | |
2ad9852d RK |
10334 | add_prototyped_attribute (subr_die, TREE_TYPE (decl)); |
10335 | add_type_attribute (subr_die, TREE_TYPE (TREE_TYPE (decl)), | |
10336 | 0, 0, context_die); | |
4927276d | 10337 | } |
71dfc51f | 10338 | |
a3f97cbb | 10339 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
10340 | if (DECL_ARTIFICIAL (decl)) |
10341 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
2ad9852d | 10342 | |
a94dbf2c JM |
10343 | if (TREE_PROTECTED (decl)) |
10344 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
10345 | else if (TREE_PRIVATE (decl)) | |
10346 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 10347 | } |
4edb7b60 | 10348 | |
a94dbf2c JM |
10349 | if (declaration) |
10350 | { | |
2ad9852d | 10351 | if (!old_die || !get_AT_unsigned (old_die, DW_AT_inline)) |
1edf43d6 JM |
10352 | { |
10353 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
10354 | ||
10355 | /* The first time we see a member function, it is in the context of | |
10356 | the class to which it belongs. We make sure of this by emitting | |
10357 | the class first. The next time is the definition, which is | |
10358 | handled above. The two may come from the same source text. */ | |
10359 | if (DECL_CONTEXT (decl) || DECL_ABSTRACT (decl)) | |
10360 | equate_decl_number_to_die (decl, subr_die); | |
10361 | } | |
a94dbf2c JM |
10362 | } |
10363 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 10364 | { |
10a11b75 | 10365 | if (DECL_INLINE (decl) && !flag_no_inline) |
61b32c02 | 10366 | { |
10a11b75 JM |
10367 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static |
10368 | inline functions, but not for extern inline functions. | |
10369 | We can't get this completely correct because information | |
10370 | about whether the function was declared inline is not | |
10371 | saved anywhere. */ | |
10372 | if (DECL_DEFER_OUTPUT (decl)) | |
61b32c02 JM |
10373 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); |
10374 | else | |
10a11b75 | 10375 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); |
61b32c02 | 10376 | } |
61b32c02 | 10377 | else |
10a11b75 | 10378 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_not_inlined); |
61b32c02 | 10379 | |
a3f97cbb JW |
10380 | equate_decl_number_to_die (decl, subr_die); |
10381 | } | |
10382 | else if (!DECL_EXTERNAL (decl)) | |
10383 | { | |
2ad9852d | 10384 | if (!old_die || !get_AT_unsigned (old_die, DW_AT_inline)) |
ba7b35df | 10385 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 10386 | |
5c90448c | 10387 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
df696a75 | 10388 | current_function_funcdef_no); |
7d4440be | 10389 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c | 10390 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
df696a75 | 10391 | current_function_funcdef_no); |
a3f97cbb JW |
10392 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
10393 | ||
d291dd49 JM |
10394 | add_pubname (decl, subr_die); |
10395 | add_arange (decl, subr_die); | |
10396 | ||
a3f97cbb | 10397 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
10398 | /* Add a reference to the FDE for this routine. */ |
10399 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
10400 | #endif | |
10401 | ||
810429b7 JM |
10402 | /* Define the "frame base" location for this routine. We use the |
10403 | frame pointer or stack pointer registers, since the RTL for local | |
10404 | variables is relative to one of them. */ | |
b1ccbc24 RK |
10405 | fp_reg |
10406 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
10407 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 10408 | |
ef76d03b JW |
10409 | #if 0 |
10410 | /* ??? This fails for nested inline functions, because context_display | |
10411 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 10412 | if (current_function_needs_context) |
ef76d03b | 10413 | add_AT_location_description (subr_die, DW_AT_static_link, |
b9203463 | 10414 | loc_descriptor (lookup_static_chain (decl))); |
ef76d03b | 10415 | #endif |
a3f97cbb JW |
10416 | } |
10417 | ||
10418 | /* Now output descriptions of the arguments for this function. This gets | |
556273e0 | 10419 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list |
a3f97cbb JW |
10420 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing |
10421 | `...' at the end of the formal parameter list. In order to find out if | |
10422 | there was a trailing ellipsis or not, we must instead look at the type | |
10423 | associated with the FUNCTION_DECL. This will be a node of type | |
10424 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
556273e0 | 10425 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be |
a3f97cbb | 10426 | an ellipsis at the end. */ |
71dfc51f | 10427 | |
a3f97cbb | 10428 | /* In the case where we are describing a mere function declaration, all we |
556273e0 | 10429 | need to do here (and all we *can* do here) is to describe the *types* of |
a3f97cbb | 10430 | its formal parameters. */ |
4927276d | 10431 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 10432 | ; |
4edb7b60 | 10433 | else if (declaration) |
5daf7c0a | 10434 | gen_formal_types_die (decl, subr_die); |
a3f97cbb JW |
10435 | else |
10436 | { | |
10437 | /* Generate DIEs to represent all known formal parameters */ | |
b3694847 SS |
10438 | tree arg_decls = DECL_ARGUMENTS (decl); |
10439 | tree parm; | |
a3f97cbb JW |
10440 | |
10441 | /* When generating DIEs, generate the unspecified_parameters DIE | |
10442 | instead if we come across the arg "__builtin_va_alist" */ | |
10443 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
10444 | if (TREE_CODE (parm) == PARM_DECL) |
10445 | { | |
db3cf6fb MS |
10446 | if (DECL_NAME (parm) |
10447 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
10448 | "__builtin_va_alist")) | |
71dfc51f RK |
10449 | gen_unspecified_parameters_die (parm, subr_die); |
10450 | else | |
10451 | gen_decl_die (parm, subr_die); | |
10452 | } | |
a3f97cbb | 10453 | |
4fe9b91c | 10454 | /* Decide whether we need an unspecified_parameters DIE at the end. |
556273e0 | 10455 | There are 2 more cases to do this for: 1) the ansi ... declaration - |
a3f97cbb JW |
10456 | this is detectable when the end of the arg list is not a |
10457 | void_type_node 2) an unprototyped function declaration (not a | |
10458 | definition). This just means that we have no info about the | |
10459 | parameters at all. */ | |
10460 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 10461 | if (fn_arg_types != NULL) |
a3f97cbb JW |
10462 | { |
10463 | /* this is the prototyped case, check for ... */ | |
10464 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 10465 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 10466 | } |
71dfc51f RK |
10467 | else if (DECL_INITIAL (decl) == NULL_TREE) |
10468 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
10469 | } |
10470 | ||
10471 | /* Output Dwarf info for all of the stuff within the body of the function | |
10472 | (if it has one - it may be just a declaration). */ | |
10473 | outer_scope = DECL_INITIAL (decl); | |
10474 | ||
2ad9852d RK |
10475 | /* OUTER_SCOPE is a pointer to the outermost BLOCK node created to represent |
10476 | a function. This BLOCK actually represents the outermost binding contour | |
10477 | for the function, i.e. the contour in which the function's formal | |
10478 | parameters and labels get declared. Curiously, it appears that the front | |
10479 | end doesn't actually put the PARM_DECL nodes for the current function onto | |
10480 | the BLOCK_VARS list for this outer scope, but are strung off of the | |
10481 | DECL_ARGUMENTS list for the function instead. | |
10482 | ||
10483 | The BLOCK_VARS list for the `outer_scope' does provide us with a list of | |
10484 | the LABEL_DECL nodes for the function however, and we output DWARF info | |
10485 | for those in decls_for_scope. Just within the `outer_scope' there will be | |
10486 | a BLOCK node representing the function's outermost pair of curly braces, | |
10487 | and any blocks used for the base and member initializers of a C++ | |
d7248bff | 10488 | constructor function. */ |
4edb7b60 | 10489 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
10490 | { |
10491 | current_function_has_inlines = 0; | |
10492 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 10493 | |
ce61cc73 | 10494 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
10495 | if (current_function_has_inlines) |
10496 | { | |
10497 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
10498 | if (! comp_unit_has_inlines) | |
10499 | { | |
10500 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
10501 | comp_unit_has_inlines = 1; | |
10502 | } | |
10503 | } | |
10504 | #endif | |
10505 | } | |
a3f97cbb JW |
10506 | } |
10507 | ||
10508 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 10509 | |
a3f97cbb JW |
10510 | static void |
10511 | gen_variable_die (decl, context_die) | |
b3694847 SS |
10512 | tree decl; |
10513 | dw_die_ref context_die; | |
a3f97cbb | 10514 | { |
b3694847 | 10515 | tree origin = decl_ultimate_origin (decl); |
54ba1f0d | 10516 | dw_die_ref var_die = new_die (DW_TAG_variable, context_die, decl); |
71dfc51f | 10517 | |
bdb669cb | 10518 | dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
10519 | int declaration = (DECL_EXTERNAL (decl) |
10520 | || class_scope_p (context_die)); | |
4edb7b60 | 10521 | |
a3f97cbb | 10522 | if (origin != NULL) |
71dfc51f | 10523 | add_abstract_origin_attribute (var_die, origin); |
2ad9852d | 10524 | |
f76b8156 | 10525 | /* Loop unrolling can create multiple blocks that refer to the same |
2ad9852d RK |
10526 | static variable, so we must test for the DW_AT_declaration flag. |
10527 | ||
10528 | ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
f76b8156 | 10529 | copy decls and set the DECL_ABSTRACT flag on them instead of |
2ad9852d RK |
10530 | sharing them. |
10531 | ||
10532 | ??? Duplicated blocks have been rewritten to use .debug_ranges. */ | |
f76b8156 | 10533 | else if (old_die && TREE_STATIC (decl) |
c26fbbca | 10534 | && get_AT_flag (old_die, DW_AT_declaration) == 1) |
bdb669cb | 10535 | { |
e689ae67 | 10536 | /* This is a definition of a C++ class level static. */ |
bdb669cb JM |
10537 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
10538 | if (DECL_NAME (decl)) | |
10539 | { | |
981975b6 | 10540 | unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); |
71dfc51f | 10541 | |
bdb669cb JM |
10542 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
10543 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 10544 | |
bdb669cb | 10545 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
556273e0 | 10546 | != (unsigned) DECL_SOURCE_LINE (decl)) |
71dfc51f RK |
10547 | |
10548 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
10549 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
10550 | } |
10551 | } | |
a3f97cbb JW |
10552 | else |
10553 | { | |
10554 | add_name_and_src_coords_attributes (var_die, decl); | |
2ad9852d | 10555 | add_type_attribute (var_die, TREE_TYPE (decl), TREE_READONLY (decl), |
a3f97cbb | 10556 | TREE_THIS_VOLATILE (decl), context_die); |
71dfc51f | 10557 | |
273dbe67 JM |
10558 | if (TREE_PUBLIC (decl)) |
10559 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 10560 | |
273dbe67 JM |
10561 | if (DECL_ARTIFICIAL (decl)) |
10562 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 10563 | |
a94dbf2c JM |
10564 | if (TREE_PROTECTED (decl)) |
10565 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
10566 | else if (TREE_PRIVATE (decl)) | |
10567 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 10568 | } |
4edb7b60 JM |
10569 | |
10570 | if (declaration) | |
10571 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
556273e0 | 10572 | |
9765e357 | 10573 | if (class_scope_p (context_die) || DECL_ABSTRACT (decl)) |
4edb7b60 JM |
10574 | equate_decl_number_to_die (decl, var_die); |
10575 | ||
10576 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb JW |
10577 | { |
10578 | add_location_or_const_value_attribute (var_die, decl); | |
d291dd49 | 10579 | add_pubname (decl, var_die); |
a3f97cbb | 10580 | } |
1bfb5f8f JM |
10581 | else |
10582 | tree_add_const_value_attribute (var_die, decl); | |
a3f97cbb JW |
10583 | } |
10584 | ||
10585 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 10586 | |
a3f97cbb JW |
10587 | static void |
10588 | gen_label_die (decl, context_die) | |
b3694847 SS |
10589 | tree decl; |
10590 | dw_die_ref context_die; | |
a3f97cbb | 10591 | { |
b3694847 | 10592 | tree origin = decl_ultimate_origin (decl); |
54ba1f0d | 10593 | dw_die_ref lbl_die = new_die (DW_TAG_label, context_die, decl); |
b3694847 | 10594 | rtx insn; |
a3f97cbb | 10595 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 10596 | |
a3f97cbb | 10597 | if (origin != NULL) |
71dfc51f | 10598 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 10599 | else |
71dfc51f RK |
10600 | add_name_and_src_coords_attributes (lbl_die, decl); |
10601 | ||
a3f97cbb | 10602 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 10603 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
10604 | else |
10605 | { | |
10606 | insn = DECL_RTL (decl); | |
088e7160 NC |
10607 | |
10608 | /* Deleted labels are programmer specified labels which have been | |
10609 | eliminated because of various optimisations. We still emit them | |
10610 | here so that it is possible to put breakpoints on them. */ | |
10611 | if (GET_CODE (insn) == CODE_LABEL | |
10612 | || ((GET_CODE (insn) == NOTE | |
10613 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL))) | |
a3f97cbb | 10614 | { |
556273e0 KH |
10615 | /* When optimization is enabled (via -O) some parts of the compiler |
10616 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
a3f97cbb JW |
10617 | represent source-level labels which were explicitly declared by |
10618 | the user. This really shouldn't be happening though, so catch | |
10619 | it if it ever does happen. */ | |
10620 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
10621 | abort (); |
10622 | ||
66234570 | 10623 | ASM_GENERATE_INTERNAL_LABEL (label, "L", CODE_LABEL_NUMBER (insn)); |
a3f97cbb JW |
10624 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
10625 | } | |
10626 | } | |
10627 | } | |
10628 | ||
10629 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 10630 | |
a3f97cbb | 10631 | static void |
d7248bff | 10632 | gen_lexical_block_die (stmt, context_die, depth) |
b3694847 SS |
10633 | tree stmt; |
10634 | dw_die_ref context_die; | |
d7248bff | 10635 | int depth; |
a3f97cbb | 10636 | { |
54ba1f0d | 10637 | dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die, stmt); |
a3f97cbb | 10638 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f RK |
10639 | |
10640 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 10641 | { |
a20612aa RH |
10642 | if (BLOCK_FRAGMENT_CHAIN (stmt)) |
10643 | { | |
10644 | tree chain; | |
10645 | ||
2bee6045 | 10646 | add_AT_range_list (stmt_die, DW_AT_ranges, add_ranges (stmt)); |
a20612aa RH |
10647 | |
10648 | chain = BLOCK_FRAGMENT_CHAIN (stmt); | |
10649 | do | |
10650 | { | |
10651 | add_ranges (chain); | |
10652 | chain = BLOCK_FRAGMENT_CHAIN (chain); | |
10653 | } | |
10654 | while (chain); | |
10655 | add_ranges (NULL); | |
10656 | } | |
10657 | else | |
10658 | { | |
10659 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, | |
10660 | BLOCK_NUMBER (stmt)); | |
10661 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); | |
10662 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, | |
10663 | BLOCK_NUMBER (stmt)); | |
10664 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); | |
10665 | } | |
a3f97cbb | 10666 | } |
71dfc51f | 10667 | |
d7248bff | 10668 | decls_for_scope (stmt, stmt_die, depth); |
a3f97cbb JW |
10669 | } |
10670 | ||
10671 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 10672 | |
a3f97cbb | 10673 | static void |
d7248bff | 10674 | gen_inlined_subroutine_die (stmt, context_die, depth) |
b3694847 SS |
10675 | tree stmt; |
10676 | dw_die_ref context_die; | |
d7248bff | 10677 | int depth; |
a3f97cbb | 10678 | { |
71dfc51f | 10679 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 10680 | { |
b3694847 | 10681 | dw_die_ref subr_die |
54ba1f0d | 10682 | = new_die (DW_TAG_inlined_subroutine, context_die, stmt); |
b3694847 | 10683 | tree decl = block_ultimate_origin (stmt); |
d7248bff | 10684 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 10685 | |
10a11b75 | 10686 | /* Emit info for the abstract instance first, if we haven't yet. */ |
1edf43d6 | 10687 | dwarf2out_abstract_function (decl); |
10a11b75 | 10688 | |
ab72d377 | 10689 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c | 10690 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
18c038b9 | 10691 | BLOCK_NUMBER (stmt)); |
a3f97cbb | 10692 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
18c038b9 MM |
10693 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, |
10694 | BLOCK_NUMBER (stmt)); | |
a3f97cbb | 10695 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
d7248bff | 10696 | decls_for_scope (stmt, subr_die, depth); |
7e23cb16 | 10697 | current_function_has_inlines = 1; |
a3f97cbb | 10698 | } |
06e224f7 AO |
10699 | else |
10700 | /* We may get here if we're the outer block of function A that was | |
10701 | inlined into function B that was inlined into function C. When | |
10702 | generating debugging info for C, dwarf2out_abstract_function(B) | |
10703 | would mark all inlined blocks as abstract, including this one. | |
10704 | So, we wouldn't (and shouldn't) expect labels to be generated | |
10705 | for this one. Instead, just emit debugging info for | |
10706 | declarations within the block. This is particularly important | |
10707 | in the case of initializers of arguments passed from B to us: | |
10708 | if they're statement expressions containing declarations, we | |
10709 | wouldn't generate dies for their abstract variables, and then, | |
10710 | when generating dies for the real variables, we'd die (pun | |
10711 | intended :-) */ | |
10712 | gen_lexical_block_die (stmt, context_die, depth); | |
a3f97cbb JW |
10713 | } |
10714 | ||
10715 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 10716 | |
a3f97cbb JW |
10717 | static void |
10718 | gen_field_die (decl, context_die) | |
b3694847 SS |
10719 | tree decl; |
10720 | dw_die_ref context_die; | |
a3f97cbb | 10721 | { |
54ba1f0d | 10722 | dw_die_ref decl_die = new_die (DW_TAG_member, context_die, decl); |
71dfc51f | 10723 | |
a3f97cbb | 10724 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
10725 | add_type_attribute (decl_die, member_declared_type (decl), |
10726 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
10727 | context_die); | |
71dfc51f | 10728 | |
a3f97cbb JW |
10729 | if (DECL_BIT_FIELD_TYPE (decl)) |
10730 | { | |
10731 | add_byte_size_attribute (decl_die, decl); | |
10732 | add_bit_size_attribute (decl_die, decl); | |
10733 | add_bit_offset_attribute (decl_die, decl); | |
10734 | } | |
71dfc51f | 10735 | |
a94dbf2c JM |
10736 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
10737 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 10738 | |
273dbe67 JM |
10739 | if (DECL_ARTIFICIAL (decl)) |
10740 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 10741 | |
a94dbf2c JM |
10742 | if (TREE_PROTECTED (decl)) |
10743 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
10744 | else if (TREE_PRIVATE (decl)) | |
10745 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
10746 | } |
10747 | ||
ab72d377 JM |
10748 | #if 0 |
10749 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
10750 | Use modified_type_die instead. | |
a3f97cbb JW |
10751 | We keep this code here just in case these types of DIEs may be needed to |
10752 | represent certain things in other languages (e.g. Pascal) someday. */ | |
2ad9852d | 10753 | |
a3f97cbb JW |
10754 | static void |
10755 | gen_pointer_type_die (type, context_die) | |
b3694847 SS |
10756 | tree type; |
10757 | dw_die_ref context_die; | |
a3f97cbb | 10758 | { |
b3694847 | 10759 | dw_die_ref ptr_die |
54ba1f0d | 10760 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die), type); |
71dfc51f | 10761 | |
a3f97cbb | 10762 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 10763 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 10764 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
10765 | } |
10766 | ||
ab72d377 JM |
10767 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
10768 | Use modified_type_die instead. | |
a3f97cbb JW |
10769 | We keep this code here just in case these types of DIEs may be needed to |
10770 | represent certain things in other languages (e.g. Pascal) someday. */ | |
2ad9852d | 10771 | |
a3f97cbb JW |
10772 | static void |
10773 | gen_reference_type_die (type, context_die) | |
b3694847 SS |
10774 | tree type; |
10775 | dw_die_ref context_die; | |
a3f97cbb | 10776 | { |
b3694847 | 10777 | dw_die_ref ref_die |
54ba1f0d | 10778 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die), type); |
71dfc51f | 10779 | |
a3f97cbb | 10780 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 10781 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 10782 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 10783 | } |
ab72d377 | 10784 | #endif |
a3f97cbb JW |
10785 | |
10786 | /* Generate a DIE for a pointer to a member type. */ | |
2ad9852d | 10787 | |
a3f97cbb JW |
10788 | static void |
10789 | gen_ptr_to_mbr_type_die (type, context_die) | |
b3694847 SS |
10790 | tree type; |
10791 | dw_die_ref context_die; | |
a3f97cbb | 10792 | { |
b3694847 | 10793 | dw_die_ref ptr_die |
54ba1f0d RH |
10794 | = new_die (DW_TAG_ptr_to_member_type, |
10795 | scope_die_for (type, context_die), type); | |
71dfc51f | 10796 | |
a3f97cbb | 10797 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 10798 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 10799 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
10800 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
10801 | } | |
10802 | ||
10803 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 10804 | |
a96c67ec JM |
10805 | static dw_die_ref |
10806 | gen_compile_unit_die (filename) | |
b3694847 | 10807 | const char *filename; |
a3f97cbb | 10808 | { |
b3694847 | 10809 | dw_die_ref die; |
a3f97cbb | 10810 | char producer[250]; |
d3e3972c | 10811 | const char *wd = getpwd (); |
3ac88239 | 10812 | const char *language_string = lang_hooks.name; |
a96c67ec | 10813 | int language; |
a3f97cbb | 10814 | |
54ba1f0d | 10815 | die = new_die (DW_TAG_compile_unit, NULL, NULL); |
a96c67ec | 10816 | add_name_attribute (die, filename); |
bdb669cb | 10817 | |
a96c67ec JM |
10818 | if (wd != NULL && filename[0] != DIR_SEPARATOR) |
10819 | add_AT_string (die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
10820 | |
10821 | sprintf (producer, "%s %s", language_string, version_string); | |
10822 | ||
10823 | #ifdef MIPS_DEBUGGING_INFO | |
10824 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
10825 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
10826 | not appear in the producer string, the debugger reaches the conclusion | |
10827 | that the object file is stripped and has no debugging information. | |
10828 | To get the MIPS/SGI debugger to believe that there is debugging | |
10829 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
10830 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10831 | strcat (producer, " -g"); | |
a3f97cbb JW |
10832 | #endif |
10833 | ||
a96c67ec | 10834 | add_AT_string (die, DW_AT_producer, producer); |
a9d38797 | 10835 | |
a3f97cbb | 10836 | if (strcmp (language_string, "GNU C++") == 0) |
a96c67ec | 10837 | language = DW_LANG_C_plus_plus; |
a3f97cbb | 10838 | else if (strcmp (language_string, "GNU Ada") == 0) |
a96c67ec | 10839 | language = DW_LANG_Ada83; |
a9d38797 | 10840 | else if (strcmp (language_string, "GNU F77") == 0) |
a96c67ec | 10841 | language = DW_LANG_Fortran77; |
bc28c45b | 10842 | else if (strcmp (language_string, "GNU Pascal") == 0) |
a96c67ec | 10843 | language = DW_LANG_Pascal83; |
28985b81 AG |
10844 | else if (strcmp (language_string, "GNU Java") == 0) |
10845 | language = DW_LANG_Java; | |
a3f97cbb | 10846 | else |
a96c67ec | 10847 | language = DW_LANG_C89; |
a9d38797 | 10848 | |
a96c67ec | 10849 | add_AT_unsigned (die, DW_AT_language, language); |
a96c67ec | 10850 | return die; |
a3f97cbb JW |
10851 | } |
10852 | ||
10853 | /* Generate a DIE for a string type. */ | |
71dfc51f | 10854 | |
a3f97cbb JW |
10855 | static void |
10856 | gen_string_type_die (type, context_die) | |
b3694847 SS |
10857 | tree type; |
10858 | dw_die_ref context_die; | |
a3f97cbb | 10859 | { |
b3694847 | 10860 | dw_die_ref type_die |
54ba1f0d | 10861 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die), type); |
71dfc51f | 10862 | |
bdb669cb | 10863 | equate_type_number_to_die (type, type_die); |
a3f97cbb | 10864 | |
2ad9852d RK |
10865 | /* ??? Fudge the string length attribute for now. |
10866 | TODO: add string length info. */ | |
10867 | #if 0 | |
10868 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); | |
10869 | bound_representation (upper_bound, 0, 'u'); | |
10870 | #endif | |
a3f97cbb JW |
10871 | } |
10872 | ||
61b32c02 | 10873 | /* Generate the DIE for a base class. */ |
71dfc51f | 10874 | |
61b32c02 JM |
10875 | static void |
10876 | gen_inheritance_die (binfo, context_die) | |
b3694847 SS |
10877 | tree binfo; |
10878 | dw_die_ref context_die; | |
61b32c02 | 10879 | { |
54ba1f0d | 10880 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die, binfo); |
71dfc51f | 10881 | |
61b32c02 JM |
10882 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
10883 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 10884 | |
61b32c02 JM |
10885 | if (TREE_VIA_VIRTUAL (binfo)) |
10886 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
2ad9852d | 10887 | |
61b32c02 JM |
10888 | if (TREE_VIA_PUBLIC (binfo)) |
10889 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
10890 | else if (TREE_VIA_PROTECTED (binfo)) | |
10891 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
10892 | } | |
10893 | ||
956d6950 | 10894 | /* Generate a DIE for a class member. */ |
71dfc51f | 10895 | |
a3f97cbb JW |
10896 | static void |
10897 | gen_member_die (type, context_die) | |
b3694847 SS |
10898 | tree type; |
10899 | dw_die_ref context_die; | |
a3f97cbb | 10900 | { |
b3694847 | 10901 | tree member; |
10a11b75 | 10902 | dw_die_ref child; |
71dfc51f | 10903 | |
a3f97cbb JW |
10904 | /* If this is not an incomplete type, output descriptions of each of its |
10905 | members. Note that as we output the DIEs necessary to represent the | |
10906 | members of this record or union type, we will also be trying to output | |
10907 | DIEs to represent the *types* of those members. However the `type' | |
556273e0 | 10908 | function (above) will specifically avoid generating type DIEs for member |
eaec9b3d | 10909 | types *within* the list of member DIEs for this (containing) type except |
a3f97cbb JW |
10910 | for those types (of members) which are explicitly marked as also being |
10911 | members of this (containing) type themselves. The g++ front- end can | |
2ad9852d RK |
10912 | force any given type to be treated as a member of some other (containing) |
10913 | type by setting the TYPE_CONTEXT of the given (member) type to point to | |
10914 | the TREE node representing the appropriate (containing) type. */ | |
a3f97cbb | 10915 | |
61b32c02 JM |
10916 | /* First output info about the base classes. */ |
10917 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 10918 | { |
b3694847 SS |
10919 | tree bases = TYPE_BINFO_BASETYPES (type); |
10920 | int n_bases = TREE_VEC_LENGTH (bases); | |
10921 | int i; | |
61b32c02 JM |
10922 | |
10923 | for (i = 0; i < n_bases; i++) | |
10924 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
10925 | } |
10926 | ||
61b32c02 JM |
10927 | /* Now output info about the data members and type members. */ |
10928 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
10a11b75 JM |
10929 | { |
10930 | /* If we thought we were generating minimal debug info for TYPE | |
10931 | and then changed our minds, some of the member declarations | |
10932 | may have already been defined. Don't define them again, but | |
10933 | do put them in the right order. */ | |
10934 | ||
10935 | child = lookup_decl_die (member); | |
10936 | if (child) | |
10937 | splice_child_die (context_die, child); | |
10938 | else | |
10939 | gen_decl_die (member, context_die); | |
10940 | } | |
61b32c02 | 10941 | |
a3f97cbb | 10942 | /* Now output info about the function members (if any). */ |
61b32c02 | 10943 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
10a11b75 | 10944 | { |
5daf7c0a JM |
10945 | /* Don't include clones in the member list. */ |
10946 | if (DECL_ABSTRACT_ORIGIN (member)) | |
10947 | continue; | |
10948 | ||
10a11b75 JM |
10949 | child = lookup_decl_die (member); |
10950 | if (child) | |
10951 | splice_child_die (context_die, child); | |
10952 | else | |
10953 | gen_decl_die (member, context_die); | |
10954 | } | |
a3f97cbb JW |
10955 | } |
10956 | ||
10a11b75 JM |
10957 | /* Generate a DIE for a structure or union type. If TYPE_DECL_SUPPRESS_DEBUG |
10958 | is set, we pretend that the type was never defined, so we only get the | |
10959 | member DIEs needed by later specification DIEs. */ | |
71dfc51f | 10960 | |
a3f97cbb | 10961 | static void |
273dbe67 | 10962 | gen_struct_or_union_type_die (type, context_die) |
b3694847 SS |
10963 | tree type; |
10964 | dw_die_ref context_die; | |
a3f97cbb | 10965 | { |
b3694847 SS |
10966 | dw_die_ref type_die = lookup_type_die (type); |
10967 | dw_die_ref scope_die = 0; | |
10968 | int nested = 0; | |
10a11b75 | 10969 | int complete = (TYPE_SIZE (type) |
65e1263a JW |
10970 | && (! TYPE_STUB_DECL (type) |
10971 | || ! TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)))); | |
273dbe67 | 10972 | |
10a11b75 | 10973 | if (type_die && ! complete) |
273dbe67 | 10974 | return; |
a082c85a | 10975 | |
71dfc51f | 10976 | if (TYPE_CONTEXT (type) != NULL_TREE |
5f2f160c | 10977 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type))) |
a082c85a JM |
10978 | nested = 1; |
10979 | ||
a94dbf2c | 10980 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
10981 | |
10982 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 10983 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 10984 | { |
b3694847 | 10985 | dw_die_ref old_die = type_die; |
71dfc51f | 10986 | |
a3f97cbb JW |
10987 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
10988 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
54ba1f0d | 10989 | scope_die, type); |
a3f97cbb | 10990 | equate_type_number_to_die (type, type_die); |
273dbe67 JM |
10991 | if (old_die) |
10992 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
5de0e8d4 JM |
10993 | else |
10994 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 10995 | } |
4b674448 | 10996 | else |
273dbe67 | 10997 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb JW |
10998 | |
10999 | /* If this type has been completed, then give it a byte_size attribute and | |
11000 | then give a list of members. */ | |
2081603c | 11001 | if (complete) |
a3f97cbb | 11002 | { |
556273e0 | 11003 | /* Prevent infinite recursion in cases where the type of some member of |
a3f97cbb JW |
11004 | this type is expressed in terms of this type itself. */ |
11005 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 11006 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 11007 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 11008 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 11009 | |
ef76d03b JW |
11010 | /* If the first reference to this type was as the return type of an |
11011 | inline function, then it may not have a parent. Fix this now. */ | |
11012 | if (type_die->die_parent == NULL) | |
11013 | add_child_die (scope_die, type_die); | |
11014 | ||
273dbe67 JM |
11015 | push_decl_scope (type); |
11016 | gen_member_die (type, type_die); | |
11017 | pop_decl_scope (); | |
71dfc51f | 11018 | |
a94dbf2c JM |
11019 | /* GNU extension: Record what type our vtable lives in. */ |
11020 | if (TYPE_VFIELD (type)) | |
11021 | { | |
11022 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 11023 | |
de6e505e JM |
11024 | gen_type_die (vtype, context_die); |
11025 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
11026 | lookup_type_die (vtype)); | |
a94dbf2c | 11027 | } |
a3f97cbb | 11028 | } |
4b674448 | 11029 | else |
8a8c3656 JM |
11030 | { |
11031 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a30d4514 | 11032 | |
9765e357 | 11033 | /* We don't need to do this for function-local types. */ |
9702143f RK |
11034 | if (TYPE_STUB_DECL (type) |
11035 | && ! decl_function_context (TYPE_STUB_DECL (type))) | |
2ad9852d | 11036 | VARRAY_PUSH_TREE (incomplete_types, type); |
8a8c3656 | 11037 | } |
a3f97cbb JW |
11038 | } |
11039 | ||
11040 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 11041 | |
a3f97cbb JW |
11042 | static void |
11043 | gen_subroutine_type_die (type, context_die) | |
b3694847 SS |
11044 | tree type; |
11045 | dw_die_ref context_die; | |
a3f97cbb | 11046 | { |
b3694847 SS |
11047 | tree return_type = TREE_TYPE (type); |
11048 | dw_die_ref subr_die | |
54ba1f0d RH |
11049 | = new_die (DW_TAG_subroutine_type, |
11050 | scope_die_for (type, context_die), type); | |
71dfc51f | 11051 | |
a3f97cbb JW |
11052 | equate_type_number_to_die (type, subr_die); |
11053 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 11054 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 11055 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
11056 | } |
11057 | ||
11058 | /* Generate a DIE for a type definition */ | |
71dfc51f | 11059 | |
a3f97cbb JW |
11060 | static void |
11061 | gen_typedef_die (decl, context_die) | |
b3694847 SS |
11062 | tree decl; |
11063 | dw_die_ref context_die; | |
a3f97cbb | 11064 | { |
b3694847 SS |
11065 | dw_die_ref type_die; |
11066 | tree origin; | |
a94dbf2c JM |
11067 | |
11068 | if (TREE_ASM_WRITTEN (decl)) | |
11069 | return; | |
a94dbf2c | 11070 | |
2ad9852d | 11071 | TREE_ASM_WRITTEN (decl) = 1; |
54ba1f0d | 11072 | type_die = new_die (DW_TAG_typedef, context_die, decl); |
a94dbf2c | 11073 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 11074 | if (origin != NULL) |
a94dbf2c | 11075 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
11076 | else |
11077 | { | |
b3694847 | 11078 | tree type; |
2ad9852d | 11079 | |
a3f97cbb | 11080 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
11081 | if (DECL_ORIGINAL_TYPE (decl)) |
11082 | { | |
11083 | type = DECL_ORIGINAL_TYPE (decl); | |
62e3bf54 JM |
11084 | |
11085 | if (type == TREE_TYPE (decl)) | |
11086 | abort (); | |
11087 | else | |
11088 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
a94dbf2c JM |
11089 | } |
11090 | else | |
11091 | type = TREE_TYPE (decl); | |
2ad9852d | 11092 | |
a94dbf2c JM |
11093 | add_type_attribute (type_die, type, TREE_READONLY (decl), |
11094 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 11095 | } |
71dfc51f | 11096 | |
a3f97cbb | 11097 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 11098 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
11099 | } |
11100 | ||
11101 | /* Generate a type description DIE. */ | |
71dfc51f | 11102 | |
a3f97cbb JW |
11103 | static void |
11104 | gen_type_die (type, context_die) | |
b3694847 SS |
11105 | tree type; |
11106 | dw_die_ref context_die; | |
a3f97cbb | 11107 | { |
348bb3c7 JM |
11108 | int need_pop; |
11109 | ||
71dfc51f RK |
11110 | if (type == NULL_TREE || type == error_mark_node) |
11111 | return; | |
a3f97cbb | 11112 | |
0e98f924 AH |
11113 | /* We are going to output a DIE to represent the unqualified version |
11114 | of this type (i.e. without any const or volatile qualifiers) so | |
11115 | get the main variant (i.e. the unqualified version) of this type | |
11116 | now. (Vectors are special because the debugging info is in the | |
11117 | cloned type itself). */ | |
11118 | if (TREE_CODE (type) != VECTOR_TYPE) | |
11119 | type = type_main_variant (type); | |
a3f97cbb JW |
11120 | |
11121 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 11122 | return; |
a3f97cbb | 11123 | |
a94dbf2c JM |
11124 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
11125 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
556273e0 | 11126 | { |
29b91443 JM |
11127 | /* Prevent broken recursion; we can't hand off to the same type. */ |
11128 | if (DECL_ORIGINAL_TYPE (TYPE_NAME (type)) == type) | |
11129 | abort (); | |
11130 | ||
a94dbf2c JM |
11131 | TREE_ASM_WRITTEN (type) = 1; |
11132 | gen_decl_die (TYPE_NAME (type), context_die); | |
11133 | return; | |
11134 | } | |
11135 | ||
a3f97cbb JW |
11136 | switch (TREE_CODE (type)) |
11137 | { | |
11138 | case ERROR_MARK: | |
11139 | break; | |
11140 | ||
11141 | case POINTER_TYPE: | |
11142 | case REFERENCE_TYPE: | |
956d6950 JL |
11143 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
11144 | ensures that the gen_type_die recursion will terminate even if the | |
11145 | type is recursive. Recursive types are possible in Ada. */ | |
11146 | /* ??? We could perhaps do this for all types before the switch | |
11147 | statement. */ | |
11148 | TREE_ASM_WRITTEN (type) = 1; | |
11149 | ||
a3f97cbb JW |
11150 | /* For these types, all that is required is that we output a DIE (or a |
11151 | set of DIEs) to represent the "basis" type. */ | |
11152 | gen_type_die (TREE_TYPE (type), context_die); | |
11153 | break; | |
11154 | ||
11155 | case OFFSET_TYPE: | |
556273e0 | 11156 | /* This code is used for C++ pointer-to-data-member types. |
71dfc51f | 11157 | Output a description of the relevant class type. */ |
a3f97cbb | 11158 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 11159 | |
a3f97cbb JW |
11160 | /* Output a description of the type of the object pointed to. */ |
11161 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 11162 | |
a3f97cbb JW |
11163 | /* Now output a DIE to represent this pointer-to-data-member type |
11164 | itself. */ | |
11165 | gen_ptr_to_mbr_type_die (type, context_die); | |
11166 | break; | |
11167 | ||
11168 | case SET_TYPE: | |
11169 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
11170 | gen_set_type_die (type, context_die); | |
11171 | break; | |
11172 | ||
11173 | case FILE_TYPE: | |
11174 | gen_type_die (TREE_TYPE (type), context_die); | |
11175 | abort (); /* No way to represent these in Dwarf yet! */ | |
11176 | break; | |
11177 | ||
11178 | case FUNCTION_TYPE: | |
11179 | /* Force out return type (in case it wasn't forced out already). */ | |
11180 | gen_type_die (TREE_TYPE (type), context_die); | |
11181 | gen_subroutine_type_die (type, context_die); | |
11182 | break; | |
11183 | ||
11184 | case METHOD_TYPE: | |
11185 | /* Force out return type (in case it wasn't forced out already). */ | |
11186 | gen_type_die (TREE_TYPE (type), context_die); | |
11187 | gen_subroutine_type_die (type, context_die); | |
11188 | break; | |
11189 | ||
11190 | case ARRAY_TYPE: | |
11191 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
11192 | { | |
11193 | gen_type_die (TREE_TYPE (type), context_die); | |
11194 | gen_string_type_die (type, context_die); | |
11195 | } | |
11196 | else | |
71dfc51f | 11197 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
11198 | break; |
11199 | ||
4061f623 | 11200 | case VECTOR_TYPE: |
84f0ace0 | 11201 | gen_array_type_die (type, context_die); |
4061f623 BS |
11202 | break; |
11203 | ||
a3f97cbb JW |
11204 | case ENUMERAL_TYPE: |
11205 | case RECORD_TYPE: | |
11206 | case UNION_TYPE: | |
11207 | case QUAL_UNION_TYPE: | |
2ad9852d RK |
11208 | /* If this is a nested type whose containing class hasn't been written |
11209 | out yet, writing it out will cover this one, too. This does not apply | |
11210 | to instantiations of member class templates; they need to be added to | |
11211 | the containing class as they are generated. FIXME: This hurts the | |
11212 | idea of combining type decls from multiple TUs, since we can't predict | |
11213 | what set of template instantiations we'll get. */ | |
a082c85a | 11214 | if (TYPE_CONTEXT (type) |
5f2f160c | 11215 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a082c85a | 11216 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
a94dbf2c JM |
11217 | { |
11218 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
11219 | ||
348bb3c7 | 11220 | if (TREE_ASM_WRITTEN (type)) |
a94dbf2c JM |
11221 | return; |
11222 | ||
11223 | /* If that failed, attach ourselves to the stub. */ | |
11224 | push_decl_scope (TYPE_CONTEXT (type)); | |
11225 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
348bb3c7 | 11226 | need_pop = 1; |
a94dbf2c | 11227 | } |
348bb3c7 JM |
11228 | else |
11229 | need_pop = 0; | |
a94dbf2c JM |
11230 | |
11231 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 11232 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 11233 | else |
273dbe67 | 11234 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 11235 | |
348bb3c7 | 11236 | if (need_pop) |
a94dbf2c JM |
11237 | pop_decl_scope (); |
11238 | ||
4b674448 | 11239 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
11240 | it up if it is ever completed. gen_*_type_die will set it for us |
11241 | when appropriate. */ | |
11242 | return; | |
a3f97cbb JW |
11243 | |
11244 | case VOID_TYPE: | |
11245 | case INTEGER_TYPE: | |
11246 | case REAL_TYPE: | |
11247 | case COMPLEX_TYPE: | |
11248 | case BOOLEAN_TYPE: | |
11249 | case CHAR_TYPE: | |
11250 | /* No DIEs needed for fundamental types. */ | |
11251 | break; | |
11252 | ||
11253 | case LANG_TYPE: | |
11254 | /* No Dwarf representation currently defined. */ | |
11255 | break; | |
11256 | ||
11257 | default: | |
11258 | abort (); | |
11259 | } | |
11260 | ||
11261 | TREE_ASM_WRITTEN (type) = 1; | |
11262 | } | |
11263 | ||
11264 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 11265 | |
a3f97cbb JW |
11266 | static void |
11267 | gen_tagged_type_instantiation_die (type, context_die) | |
b3694847 SS |
11268 | tree type; |
11269 | dw_die_ref context_die; | |
a3f97cbb | 11270 | { |
71dfc51f RK |
11271 | if (type == NULL_TREE || type == error_mark_node) |
11272 | return; | |
a3f97cbb | 11273 | |
38e01259 | 11274 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
11275 | this type (i.e. without any const or volatile qualifiers) so make sure |
11276 | that we have the main variant (i.e. the unqualified version) of this | |
11277 | type now. */ | |
bbc6ae08 | 11278 | if (type != type_main_variant (type)) |
3a88cbd1 | 11279 | abort (); |
a3f97cbb | 11280 | |
203588e7 | 11281 | /* Do not check TREE_ASM_WRITTEN (type) as it may not be set if this is |
bbc6ae08 | 11282 | an instance of an unresolved type. */ |
556273e0 | 11283 | |
a3f97cbb JW |
11284 | switch (TREE_CODE (type)) |
11285 | { | |
11286 | case ERROR_MARK: | |
11287 | break; | |
11288 | ||
11289 | case ENUMERAL_TYPE: | |
11290 | gen_inlined_enumeration_type_die (type, context_die); | |
11291 | break; | |
11292 | ||
11293 | case RECORD_TYPE: | |
11294 | gen_inlined_structure_type_die (type, context_die); | |
11295 | break; | |
11296 | ||
11297 | case UNION_TYPE: | |
11298 | case QUAL_UNION_TYPE: | |
11299 | gen_inlined_union_type_die (type, context_die); | |
11300 | break; | |
11301 | ||
11302 | default: | |
71dfc51f | 11303 | abort (); |
a3f97cbb JW |
11304 | } |
11305 | } | |
11306 | ||
11307 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
11308 | things which are local to the given block. */ | |
71dfc51f | 11309 | |
a3f97cbb | 11310 | static void |
d7248bff | 11311 | gen_block_die (stmt, context_die, depth) |
b3694847 SS |
11312 | tree stmt; |
11313 | dw_die_ref context_die; | |
d7248bff | 11314 | int depth; |
a3f97cbb | 11315 | { |
b3694847 SS |
11316 | int must_output_die = 0; |
11317 | tree origin; | |
11318 | tree decl; | |
11319 | enum tree_code origin_code; | |
a3f97cbb JW |
11320 | |
11321 | /* Ignore blocks never really used to make RTL. */ | |
1e7f092a JM |
11322 | if (stmt == NULL_TREE || !TREE_USED (stmt) |
11323 | || (!TREE_ASM_WRITTEN (stmt) && !BLOCK_ABSTRACT (stmt))) | |
71dfc51f | 11324 | return; |
a3f97cbb | 11325 | |
a20612aa RH |
11326 | /* If the block is one fragment of a non-contiguous block, do not |
11327 | process the variables, since they will have been done by the | |
11328 | origin block. Do process subblocks. */ | |
11329 | if (BLOCK_FRAGMENT_ORIGIN (stmt)) | |
11330 | { | |
11331 | tree sub; | |
11332 | ||
2ad9852d | 11333 | for (sub = BLOCK_SUBBLOCKS (stmt); sub; sub = BLOCK_CHAIN (sub)) |
a20612aa | 11334 | gen_block_die (sub, context_die, depth + 1); |
2ad9852d | 11335 | |
a20612aa RH |
11336 | return; |
11337 | } | |
11338 | ||
a3f97cbb JW |
11339 | /* Determine the "ultimate origin" of this block. This block may be an |
11340 | inlined instance of an inlined instance of inline function, so we have | |
11341 | to trace all of the way back through the origin chain to find out what | |
11342 | sort of node actually served as the original seed for the creation of | |
11343 | the current block. */ | |
11344 | origin = block_ultimate_origin (stmt); | |
11345 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
11346 | ||
11347 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
11348 | block. */ | |
11349 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
11350 | /* The outer scopes for inlinings *must* always be represented. We |
11351 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
11352 | must_output_die = 1; | |
a3f97cbb JW |
11353 | else |
11354 | { | |
11355 | /* In the case where the current block represents an inlining of the | |
556273e0 | 11356 | "body block" of an inline function, we must *NOT* output any DIE for |
2ad9852d RK |
11357 | this block because we have already output a DIE to represent the whole |
11358 | inlined function scope and the "body block" of any function doesn't | |
11359 | really represent a different scope according to ANSI C rules. So we | |
11360 | check here to make sure that this block does not represent a "body | |
11361 | block inlining" before trying to set the MUST_OUTPUT_DIE flag. */ | |
d7248bff | 11362 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
11363 | { |
11364 | /* Determine if this block directly contains any "significant" | |
11365 | local declarations which we will need to output DIEs for. */ | |
11366 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
11367 | /* We are not in terse mode so *any* local declaration counts |
11368 | as being a "significant" one. */ | |
11369 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 11370 | else |
71dfc51f RK |
11371 | /* We are in terse mode, so only local (nested) function |
11372 | definitions count as "significant" local declarations. */ | |
11373 | for (decl = BLOCK_VARS (stmt); | |
11374 | decl != NULL; decl = TREE_CHAIN (decl)) | |
11375 | if (TREE_CODE (decl) == FUNCTION_DECL | |
11376 | && DECL_INITIAL (decl)) | |
a3f97cbb | 11377 | { |
71dfc51f RK |
11378 | must_output_die = 1; |
11379 | break; | |
a3f97cbb | 11380 | } |
a3f97cbb JW |
11381 | } |
11382 | } | |
11383 | ||
11384 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
11385 | DIE for any block which contains no significant local declarations at | |
11386 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
11387 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
11388 | that in terse mode, our definition of what constitutes a "significant" | |
11389 | local declaration gets restricted to include only inlined function | |
11390 | instances and local (nested) function definitions. */ | |
11391 | if (must_output_die) | |
11392 | { | |
11393 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 11394 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 11395 | else |
71dfc51f | 11396 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
11397 | } |
11398 | else | |
d7248bff | 11399 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
11400 | } |
11401 | ||
11402 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 11403 | all of its sub-blocks. */ |
71dfc51f | 11404 | |
a3f97cbb | 11405 | static void |
d7248bff | 11406 | decls_for_scope (stmt, context_die, depth) |
b3694847 SS |
11407 | tree stmt; |
11408 | dw_die_ref context_die; | |
d7248bff | 11409 | int depth; |
a3f97cbb | 11410 | { |
b3694847 SS |
11411 | tree decl; |
11412 | tree subblocks; | |
71dfc51f | 11413 | |
a3f97cbb | 11414 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
11415 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
11416 | return; | |
11417 | ||
88dad228 JM |
11418 | /* Output the DIEs to represent all of the data objects and typedefs |
11419 | declared directly within this block but not within any nested | |
11420 | sub-blocks. Also, nested function and tag DIEs have been | |
11421 | generated with a parent of NULL; fix that up now. */ | |
2ad9852d | 11422 | for (decl = BLOCK_VARS (stmt); decl != NULL; decl = TREE_CHAIN (decl)) |
a3f97cbb | 11423 | { |
b3694847 | 11424 | dw_die_ref die; |
a94dbf2c | 11425 | |
88dad228 | 11426 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 11427 | die = lookup_decl_die (decl); |
88dad228 | 11428 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
11429 | die = lookup_type_die (TREE_TYPE (decl)); |
11430 | else | |
11431 | die = NULL; | |
11432 | ||
71dfc51f | 11433 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 11434 | add_child_die (context_die, die); |
88dad228 JM |
11435 | else |
11436 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
11437 | } |
11438 | ||
11439 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
11440 | therein) of this block. */ | |
11441 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
11442 | subblocks != NULL; | |
11443 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 11444 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
11445 | } |
11446 | ||
a94dbf2c | 11447 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
11448 | |
11449 | static inline int | |
a94dbf2c | 11450 | is_redundant_typedef (decl) |
b3694847 | 11451 | tree decl; |
a94dbf2c JM |
11452 | { |
11453 | if (TYPE_DECL_IS_STUB (decl)) | |
11454 | return 1; | |
71dfc51f | 11455 | |
a94dbf2c JM |
11456 | if (DECL_ARTIFICIAL (decl) |
11457 | && DECL_CONTEXT (decl) | |
11458 | && is_tagged_type (DECL_CONTEXT (decl)) | |
11459 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
11460 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
11461 | /* Also ignore the artificial member typedef for the class name. */ | |
11462 | return 1; | |
71dfc51f | 11463 | |
a94dbf2c JM |
11464 | return 0; |
11465 | } | |
11466 | ||
a3f97cbb | 11467 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 11468 | |
a3f97cbb JW |
11469 | static void |
11470 | gen_decl_die (decl, context_die) | |
b3694847 SS |
11471 | tree decl; |
11472 | dw_die_ref context_die; | |
a3f97cbb | 11473 | { |
b3694847 | 11474 | tree origin; |
71dfc51f | 11475 | |
f11c3043 | 11476 | if (DECL_P (decl) && DECL_IGNORED_P (decl)) |
71dfc51f | 11477 | return; |
a3f97cbb | 11478 | |
a3f97cbb JW |
11479 | switch (TREE_CODE (decl)) |
11480 | { | |
2ad9852d RK |
11481 | case ERROR_MARK: |
11482 | break; | |
11483 | ||
a3f97cbb | 11484 | case CONST_DECL: |
556273e0 | 11485 | /* The individual enumerators of an enum type get output when we output |
a3f97cbb JW |
11486 | the Dwarf representation of the relevant enum type itself. */ |
11487 | break; | |
11488 | ||
11489 | case FUNCTION_DECL: | |
4edb7b60 JM |
11490 | /* Don't output any DIEs to represent mere function declarations, |
11491 | unless they are class members or explicit block externs. */ | |
11492 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
777ad4c2 | 11493 | && (current_function_decl == NULL_TREE || DECL_ARTIFICIAL (decl))) |
71dfc51f | 11494 | break; |
bdb669cb | 11495 | |
5daf7c0a JM |
11496 | /* If we're emitting a clone, emit info for the abstract instance. */ |
11497 | if (DECL_ORIGIN (decl) != decl) | |
11498 | dwarf2out_abstract_function (DECL_ABSTRACT_ORIGIN (decl)); | |
2ad9852d | 11499 | |
1cfdcc15 JM |
11500 | /* If we're emitting an out-of-line copy of an inline function, |
11501 | emit info for the abstract instance and set up to refer to it. */ | |
5daf7c0a JM |
11502 | else if (DECL_INLINE (decl) && ! DECL_ABSTRACT (decl) |
11503 | && ! class_scope_p (context_die) | |
11504 | /* dwarf2out_abstract_function won't emit a die if this is just | |
11505 | a declaration. We must avoid setting DECL_ABSTRACT_ORIGIN in | |
11506 | that case, because that works only if we have a die. */ | |
11507 | && DECL_INITIAL (decl) != NULL_TREE) | |
1cfdcc15 | 11508 | { |
1edf43d6 | 11509 | dwarf2out_abstract_function (decl); |
1cfdcc15 JM |
11510 | set_decl_origin_self (decl); |
11511 | } | |
2ad9852d | 11512 | |
5daf7c0a JM |
11513 | /* Otherwise we're emitting the primary DIE for this decl. */ |
11514 | else if (debug_info_level > DINFO_LEVEL_TERSE) | |
a94dbf2c JM |
11515 | { |
11516 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
11517 | have described its return type. */ | |
11518 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
11519 | ||
2081603c JM |
11520 | /* And its virtual context. */ |
11521 | if (DECL_VINDEX (decl) != NULL_TREE) | |
11522 | gen_type_die (DECL_CONTEXT (decl), context_die); | |
11523 | ||
a94dbf2c JM |
11524 | /* And its containing type. */ |
11525 | origin = decl_class_context (decl); | |
71dfc51f | 11526 | if (origin != NULL_TREE) |
10a11b75 | 11527 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 11528 | } |
a3f97cbb JW |
11529 | |
11530 | /* Now output a DIE to represent the function itself. */ | |
11531 | gen_subprogram_die (decl, context_die); | |
11532 | break; | |
11533 | ||
11534 | case TYPE_DECL: | |
11535 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 11536 | actual typedefs. */ |
a3f97cbb | 11537 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 11538 | break; |
a3f97cbb | 11539 | |
2ad9852d RK |
11540 | /* In the special case of a TYPE_DECL node representing the declaration |
11541 | of some type tag, if the given TYPE_DECL is marked as having been | |
11542 | instantiated from some other (original) TYPE_DECL node (e.g. one which | |
11543 | was generated within the original definition of an inline function) we | |
11544 | have to generate a special (abbreviated) DW_TAG_structure_type, | |
11545 | DW_TAG_union_type, or DW_TAG_enumeration_type DIE here. */ | |
2081603c | 11546 | if (TYPE_DECL_IS_STUB (decl) && decl_ultimate_origin (decl) != NULL_TREE) |
a3f97cbb JW |
11547 | { |
11548 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
11549 | break; | |
11550 | } | |
a3f97cbb | 11551 | |
a94dbf2c JM |
11552 | if (is_redundant_typedef (decl)) |
11553 | gen_type_die (TREE_TYPE (decl), context_die); | |
11554 | else | |
71dfc51f RK |
11555 | /* Output a DIE to represent the typedef itself. */ |
11556 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
11557 | break; |
11558 | ||
11559 | case LABEL_DECL: | |
11560 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 11561 | gen_label_die (decl, context_die); |
a3f97cbb JW |
11562 | break; |
11563 | ||
11564 | case VAR_DECL: | |
11565 | /* If we are in terse mode, don't generate any DIEs to represent any | |
11566 | variable declarations or definitions. */ | |
11567 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 11568 | break; |
a3f97cbb JW |
11569 | |
11570 | /* Output any DIEs that are needed to specify the type of this data | |
11571 | object. */ | |
11572 | gen_type_die (TREE_TYPE (decl), context_die); | |
11573 | ||
a94dbf2c JM |
11574 | /* And its containing type. */ |
11575 | origin = decl_class_context (decl); | |
71dfc51f | 11576 | if (origin != NULL_TREE) |
10a11b75 | 11577 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 11578 | |
a3f97cbb JW |
11579 | /* Now output the DIE to represent the data object itself. This gets |
11580 | complicated because of the possibility that the VAR_DECL really | |
11581 | represents an inlined instance of a formal parameter for an inline | |
11582 | function. */ | |
11583 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
11584 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
11585 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 11586 | else |
71dfc51f | 11587 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
11588 | break; |
11589 | ||
11590 | case FIELD_DECL: | |
2ad9852d RK |
11591 | /* Ignore the nameless fields that are used to skip bits but handle C++ |
11592 | anonymous unions. */ | |
71dfc51f RK |
11593 | if (DECL_NAME (decl) != NULL_TREE |
11594 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
11595 | { |
11596 | gen_type_die (member_declared_type (decl), context_die); | |
11597 | gen_field_die (decl, context_die); | |
11598 | } | |
11599 | break; | |
11600 | ||
11601 | case PARM_DECL: | |
11602 | gen_type_die (TREE_TYPE (decl), context_die); | |
11603 | gen_formal_parameter_die (decl, context_die); | |
11604 | break; | |
11605 | ||
348bb3c7 JM |
11606 | case NAMESPACE_DECL: |
11607 | /* Ignore for now. */ | |
11608 | break; | |
11609 | ||
a3f97cbb JW |
11610 | default: |
11611 | abort (); | |
11612 | } | |
a3f97cbb | 11613 | } |
54ba1f0d RH |
11614 | |
11615 | static void | |
11616 | mark_limbo_die_list (ptr) | |
11617 | void *ptr ATTRIBUTE_UNUSED; | |
11618 | { | |
11619 | limbo_die_node *node; | |
c26fbbca | 11620 | for (node = limbo_die_list; node; node = node->next) |
54ba1f0d RH |
11621 | ggc_mark_tree (node->created_for); |
11622 | } | |
a3f97cbb | 11623 | \f |
14a774a9 RK |
11624 | /* Add Ada "use" clause information for SGI Workshop debugger. */ |
11625 | ||
11626 | void | |
11627 | dwarf2out_add_library_unit_info (filename, context_list) | |
c6991660 KG |
11628 | const char *filename; |
11629 | const char *context_list; | |
14a774a9 RK |
11630 | { |
11631 | unsigned int file_index; | |
11632 | ||
11633 | if (filename != NULL) | |
11634 | { | |
54ba1f0d | 11635 | dw_die_ref unit_die = new_die (DW_TAG_module, comp_unit_die, NULL); |
556273e0 | 11636 | tree context_list_decl |
14a774a9 RK |
11637 | = build_decl (LABEL_DECL, get_identifier (context_list), |
11638 | void_type_node); | |
11639 | ||
11640 | TREE_PUBLIC (context_list_decl) = TRUE; | |
11641 | add_name_attribute (unit_die, context_list); | |
981975b6 | 11642 | file_index = lookup_filename (filename); |
14a774a9 RK |
11643 | add_AT_unsigned (unit_die, DW_AT_decl_file, file_index); |
11644 | add_pubname (context_list_decl, unit_die); | |
11645 | } | |
11646 | } | |
11647 | ||
2ad9852d | 11648 | /* Output debug information for global decl DECL. Called from toplev.c after |
2b85879e | 11649 | compilation proper has finished. */ |
2ad9852d | 11650 | |
2b85879e NB |
11651 | static void |
11652 | dwarf2out_global_decl (decl) | |
11653 | tree decl; | |
11654 | { | |
11655 | /* Output DWARF2 information for file-scope tentative data object | |
2ad9852d RK |
11656 | declarations, file-scope (extern) function declarations (which had no |
11657 | corresponding body) and file-scope tagged type declarations and | |
11658 | definitions which have not yet been forced out. */ | |
2b85879e NB |
11659 | if (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)) |
11660 | dwarf2out_decl (decl); | |
11661 | } | |
11662 | ||
71dfc51f RK |
11663 | /* Write the debugging output for DECL. */ |
11664 | ||
a3f97cbb | 11665 | void |
88dad228 | 11666 | dwarf2out_decl (decl) |
b3694847 | 11667 | tree decl; |
a3f97cbb | 11668 | { |
b3694847 | 11669 | dw_die_ref context_die = comp_unit_die; |
88dad228 | 11670 | |
a3f97cbb JW |
11671 | switch (TREE_CODE (decl)) |
11672 | { | |
2ad9852d RK |
11673 | case ERROR_MARK: |
11674 | return; | |
11675 | ||
a3f97cbb | 11676 | case FUNCTION_DECL: |
556273e0 | 11677 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a |
a3f97cbb JW |
11678 | builtin function. Explicit programmer-supplied declarations of |
11679 | these same functions should NOT be ignored however. */ | |
9765e357 | 11680 | if (DECL_EXTERNAL (decl) && DECL_BUILT_IN (decl)) |
b1ccbc24 | 11681 | return; |
a3f97cbb JW |
11682 | |
11683 | /* What we would really like to do here is to filter out all mere | |
11684 | file-scope declarations of file-scope functions which are never | |
11685 | referenced later within this translation unit (and keep all of ones | |
556273e0 KH |
11686 | that *are* referenced later on) but we aren't clairvoyant, so we have |
11687 | no idea which functions will be referenced in the future (i.e. later | |
a3f97cbb | 11688 | on within the current translation unit). So here we just ignore all |
556273e0 | 11689 | file-scope function declarations which are not also definitions. If |
956d6950 | 11690 | and when the debugger needs to know something about these functions, |
556273e0 | 11691 | it will have to hunt around and find the DWARF information associated |
2ad9852d RK |
11692 | with the definition of the function. |
11693 | ||
11694 | We can't just check DECL_EXTERNAL to find out which FUNCTION_DECL | |
11695 | nodes represent definitions and which ones represent mere | |
11696 | declarations. We have to check DECL_INITIAL instead. That's because | |
11697 | the C front-end supports some weird semantics for "extern inline" | |
11698 | function definitions. These can get inlined within the current | |
11699 | translation unit (an thus, we need to generate Dwarf info for their | |
11700 | abstract instances so that the Dwarf info for the concrete inlined | |
11701 | instances can have something to refer to) but the compiler never | |
11702 | generates any out-of-lines instances of such things (despite the fact | |
11703 | that they *are* definitions). | |
11704 | ||
11705 | The important point is that the C front-end marks these "extern | |
11706 | inline" functions as DECL_EXTERNAL, but we need to generate DWARF for | |
11707 | them anyway. Note that the C++ front-end also plays some similar games | |
11708 | for inline function definitions appearing within include files which | |
11709 | also contain `#pragma interface' pragmas. */ | |
a3f97cbb | 11710 | if (DECL_INITIAL (decl) == NULL_TREE) |
b1ccbc24 | 11711 | return; |
88dad228 | 11712 | |
9c6cd30e JM |
11713 | /* If we're a nested function, initially use a parent of NULL; if we're |
11714 | a plain function, this will be fixed up in decls_for_scope. If | |
11715 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 11716 | if (decl_function_context (decl)) |
9c6cd30e | 11717 | context_die = NULL; |
a3f97cbb JW |
11718 | break; |
11719 | ||
11720 | case VAR_DECL: | |
556273e0 | 11721 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object |
a3f97cbb JW |
11722 | declaration and if the declaration was never even referenced from |
11723 | within this entire compilation unit. We suppress these DIEs in | |
11724 | order to save space in the .debug section (by eliminating entries | |
11725 | which are probably useless). Note that we must not suppress | |
11726 | block-local extern declarations (whether used or not) because that | |
11727 | would screw-up the debugger's name lookup mechanism and cause it to | |
11728 | miss things which really ought to be in scope at a given point. */ | |
11729 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 11730 | return; |
a3f97cbb JW |
11731 | |
11732 | /* If we are in terse mode, don't generate any DIEs to represent any | |
11733 | variable declarations or definitions. */ | |
11734 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 11735 | return; |
a3f97cbb JW |
11736 | break; |
11737 | ||
11738 | case TYPE_DECL: | |
57fb7689 JM |
11739 | /* Don't emit stubs for types unless they are needed by other DIEs. */ |
11740 | if (TYPE_DECL_SUPPRESS_DEBUG (decl)) | |
11741 | return; | |
11742 | ||
a3f97cbb | 11743 | /* Don't bother trying to generate any DIEs to represent any of the |
a9d38797 JM |
11744 | normal built-in types for the language we are compiling. */ |
11745 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
11746 | { |
11747 | /* OK, we need to generate one for `bool' so GDB knows what type | |
11748 | comparisons have. */ | |
11749 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
11750 | == DW_LANG_C_plus_plus) | |
f11c3043 RK |
11751 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE |
11752 | && ! DECL_IGNORED_P (decl)) | |
a94dbf2c | 11753 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); |
71dfc51f | 11754 | |
a94dbf2c JM |
11755 | return; |
11756 | } | |
a3f97cbb | 11757 | |
88dad228 | 11758 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 11759 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 11760 | return; |
88dad228 JM |
11761 | |
11762 | /* If we're a function-scope tag, initially use a parent of NULL; | |
11763 | this will be fixed up in decls_for_scope. */ | |
11764 | if (decl_function_context (decl)) | |
3f76745e | 11765 | context_die = NULL; |
88dad228 | 11766 | |
a3f97cbb JW |
11767 | break; |
11768 | ||
11769 | default: | |
11770 | return; | |
11771 | } | |
11772 | ||
88dad228 | 11773 | gen_decl_die (decl, context_die); |
a3f97cbb JW |
11774 | } |
11775 | ||
11776 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
11777 | a lexical block. */ | |
71dfc51f | 11778 | |
a5a42b92 | 11779 | static void |
e2a12aca | 11780 | dwarf2out_begin_block (line, blocknum) |
a5a42b92 NB |
11781 | unsigned int line ATTRIBUTE_UNUSED; |
11782 | unsigned int blocknum; | |
a3f97cbb | 11783 | { |
a3f97cbb | 11784 | function_section (current_function_decl); |
8215347e | 11785 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
11786 | } |
11787 | ||
11788 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
11789 | lexical block. */ | |
71dfc51f | 11790 | |
a5a42b92 | 11791 | static void |
e2a12aca | 11792 | dwarf2out_end_block (line, blocknum) |
a5a42b92 NB |
11793 | unsigned int line ATTRIBUTE_UNUSED; |
11794 | unsigned int blocknum; | |
a3f97cbb | 11795 | { |
a3f97cbb | 11796 | function_section (current_function_decl); |
8215347e | 11797 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
11798 | } |
11799 | ||
64b59a80 JM |
11800 | /* Returns nonzero if it is appropriate not to emit any debugging |
11801 | information for BLOCK, because it doesn't contain any instructions. | |
fcd7f76b | 11802 | |
64b59a80 JM |
11803 | Don't allow this for blocks with nested functions or local classes |
11804 | as we would end up with orphans, and in the presence of scheduling | |
11805 | we may end up calling them anyway. */ | |
11806 | ||
e1772ac0 | 11807 | static bool |
fcd7f76b JM |
11808 | dwarf2out_ignore_block (block) |
11809 | tree block; | |
11810 | { | |
11811 | tree decl; | |
2ad9852d | 11812 | |
fcd7f76b | 11813 | for (decl = BLOCK_VARS (block); decl; decl = TREE_CHAIN (decl)) |
64b59a80 JM |
11814 | if (TREE_CODE (decl) == FUNCTION_DECL |
11815 | || (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl))) | |
11816 | return 0; | |
2ad9852d | 11817 | |
64b59a80 | 11818 | return 1; |
fcd7f76b JM |
11819 | } |
11820 | ||
2ad9852d | 11821 | /* Lookup FILE_NAME (in the list of filenames that we know about here in |
9a666dda | 11822 | dwarf2out.c) and return its "index". The index of each (known) filename is |
2ad9852d RK |
11823 | just a unique number which is associated with only that one filename. We |
11824 | need such numbers for the sake of generating labels (in the .debug_sfnames | |
11825 | section) and references to those files numbers (in the .debug_srcinfo | |
11826 | and.debug_macinfo sections). If the filename given as an argument is not | |
11827 | found in our current list, add it to the list and assign it the next | |
11828 | available unique index number. In order to speed up searches, we remember | |
11829 | the index of the filename was looked up last. This handles the majority of | |
11830 | all searches. */ | |
71dfc51f | 11831 | |
a3f97cbb | 11832 | static unsigned |
981975b6 | 11833 | lookup_filename (file_name) |
d560ee52 | 11834 | const char *file_name; |
a3f97cbb | 11835 | { |
b3694847 | 11836 | unsigned i; |
a3f97cbb | 11837 | |
981975b6 RH |
11838 | /* ??? Why isn't DECL_SOURCE_FILE left null instead. */ |
11839 | if (strcmp (file_name, "<internal>") == 0 | |
11840 | || strcmp (file_name, "<built-in>") == 0) | |
11841 | return 0; | |
11842 | ||
2e18bbae RH |
11843 | /* Check to see if the file name that was searched on the previous |
11844 | call matches this file name. If so, return the index. */ | |
981975b6 | 11845 | if (file_table.last_lookup_index != 0) |
2ad9852d RK |
11846 | if (0 == strcmp (file_name, |
11847 | file_table.table[file_table.last_lookup_index])) | |
981975b6 | 11848 | return file_table.last_lookup_index; |
a3f97cbb JW |
11849 | |
11850 | /* Didn't match the previous lookup, search the table */ | |
2ad9852d | 11851 | for (i = 1; i < file_table.in_use; i++) |
981975b6 | 11852 | if (strcmp (file_name, file_table.table[i]) == 0) |
71dfc51f | 11853 | { |
981975b6 | 11854 | file_table.last_lookup_index = i; |
71dfc51f RK |
11855 | return i; |
11856 | } | |
a3f97cbb | 11857 | |
556273e0 | 11858 | /* Prepare to add a new table entry by making sure there is enough space in |
a3f97cbb | 11859 | the table to do so. If not, expand the current table. */ |
981975b6 | 11860 | if (i == file_table.allocated) |
a3f97cbb | 11861 | { |
981975b6 RH |
11862 | file_table.allocated = i + FILE_TABLE_INCREMENT; |
11863 | file_table.table = (char **) | |
11864 | xrealloc (file_table.table, file_table.allocated * sizeof (char *)); | |
a3f97cbb JW |
11865 | } |
11866 | ||
71dfc51f | 11867 | /* Add the new entry to the end of the filename table. */ |
981975b6 RH |
11868 | file_table.table[i] = xstrdup (file_name); |
11869 | file_table.in_use = i + 1; | |
11870 | file_table.last_lookup_index = i; | |
2e18bbae | 11871 | |
acc187f5 | 11872 | if (DWARF2_ASM_LINE_DEBUG_INFO) |
211a0cbe GDR |
11873 | { |
11874 | fprintf (asm_out_file, "\t.file %u ", i); | |
11875 | output_quoted_string (asm_out_file, file_name); | |
11876 | fputc ('\n', asm_out_file); | |
11877 | } | |
acc187f5 | 11878 | |
2e18bbae RH |
11879 | return i; |
11880 | } | |
11881 | ||
11882 | static void | |
981975b6 | 11883 | init_file_table () |
2e18bbae RH |
11884 | { |
11885 | /* Allocate the initial hunk of the file_table. */ | |
981975b6 RH |
11886 | file_table.table = (char **) xcalloc (FILE_TABLE_INCREMENT, sizeof (char *)); |
11887 | file_table.allocated = FILE_TABLE_INCREMENT; | |
71dfc51f | 11888 | |
2e18bbae | 11889 | /* Skip the first entry - file numbers begin at 1. */ |
981975b6 RH |
11890 | file_table.in_use = 1; |
11891 | file_table.last_lookup_index = 0; | |
a3f97cbb JW |
11892 | } |
11893 | ||
11894 | /* Output a label to mark the beginning of a source code line entry | |
11895 | and record information relating to this source line, in | |
11896 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 11897 | |
e2a12aca | 11898 | static void |
653e276c NB |
11899 | dwarf2out_source_line (line, filename) |
11900 | unsigned int line; | |
b3694847 | 11901 | const char *filename; |
a3f97cbb | 11902 | { |
a3f97cbb JW |
11903 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
11904 | { | |
11905 | function_section (current_function_decl); | |
a3f97cbb | 11906 | |
8aaf55ac JM |
11907 | /* If requested, emit something human-readable. */ |
11908 | if (flag_debug_asm) | |
11909 | fprintf (asm_out_file, "\t%s %s:%d\n", ASM_COMMENT_START, | |
11910 | filename, line); | |
11911 | ||
b2244e22 JW |
11912 | if (DWARF2_ASM_LINE_DEBUG_INFO) |
11913 | { | |
981975b6 | 11914 | unsigned file_num = lookup_filename (filename); |
b2244e22 | 11915 | |
981975b6 | 11916 | /* Emit the .loc directive understood by GNU as. */ |
2e18bbae | 11917 | fprintf (asm_out_file, "\t.loc %d %d 0\n", file_num, line); |
b2244e22 JW |
11918 | |
11919 | /* Indicate that line number info exists. */ | |
2ad9852d | 11920 | line_info_table_in_use++; |
b2244e22 JW |
11921 | |
11922 | /* Indicate that multiple line number tables exist. */ | |
11923 | if (DECL_SECTION_NAME (current_function_decl)) | |
2ad9852d | 11924 | separate_line_info_table_in_use++; |
b2244e22 JW |
11925 | } |
11926 | else if (DECL_SECTION_NAME (current_function_decl)) | |
a3f97cbb | 11927 | { |
b3694847 | 11928 | dw_separate_line_info_ref line_info; |
5c90448c JM |
11929 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
11930 | separate_line_info_table_in_use); | |
e90b62db JM |
11931 | |
11932 | /* expand the line info table if necessary */ | |
11933 | if (separate_line_info_table_in_use | |
11934 | == separate_line_info_table_allocated) | |
11935 | { | |
11936 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
11937 | separate_line_info_table | |
71dfc51f RK |
11938 | = (dw_separate_line_info_ref) |
11939 | xrealloc (separate_line_info_table, | |
11940 | separate_line_info_table_allocated | |
11941 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 11942 | } |
71dfc51f RK |
11943 | |
11944 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
11945 | line_info |
11946 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
981975b6 | 11947 | line_info->dw_file_num = lookup_filename (filename); |
e90b62db | 11948 | line_info->dw_line_num = line; |
df696a75 | 11949 | line_info->function = current_function_funcdef_no; |
e90b62db JM |
11950 | } |
11951 | else | |
11952 | { | |
b3694847 | 11953 | dw_line_info_ref line_info; |
71dfc51f | 11954 | |
5c90448c JM |
11955 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
11956 | line_info_table_in_use); | |
e90b62db | 11957 | |
71dfc51f | 11958 | /* Expand the line info table if necessary. */ |
e90b62db JM |
11959 | if (line_info_table_in_use == line_info_table_allocated) |
11960 | { | |
11961 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
11962 | line_info_table | |
71dfc51f RK |
11963 | = (dw_line_info_ref) |
11964 | xrealloc (line_info_table, | |
11965 | (line_info_table_allocated | |
11966 | * sizeof (dw_line_info_entry))); | |
e90b62db | 11967 | } |
71dfc51f RK |
11968 | |
11969 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db | 11970 | line_info = &line_info_table[line_info_table_in_use++]; |
981975b6 | 11971 | line_info->dw_file_num = lookup_filename (filename); |
e90b62db | 11972 | line_info->dw_line_num = line; |
a3f97cbb | 11973 | } |
a3f97cbb JW |
11974 | } |
11975 | } | |
11976 | ||
30f7a378 | 11977 | /* Record the beginning of a new source file. */ |
71dfc51f | 11978 | |
7f905405 | 11979 | static void |
84a5b4f8 | 11980 | dwarf2out_start_source_file (lineno, filename) |
b3694847 SS |
11981 | unsigned int lineno; |
11982 | const char *filename; | |
a3f97cbb | 11983 | { |
881c6935 JM |
11984 | if (flag_eliminate_dwarf2_dups) |
11985 | { | |
11986 | /* Record the beginning of the file for break_out_includes. */ | |
54ba1f0d | 11987 | dw_die_ref bincl_die = new_die (DW_TAG_GNU_BINCL, comp_unit_die, NULL); |
881c6935 JM |
11988 | add_AT_string (bincl_die, DW_AT_name, filename); |
11989 | } | |
2ad9852d | 11990 | |
84a5b4f8 DB |
11991 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
11992 | { | |
715bdd29 | 11993 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 | 11994 | dw2_asm_output_data (1, DW_MACINFO_start_file, "Start new file"); |
7c262518 RH |
11995 | dw2_asm_output_data_uleb128 (lineno, "Included from line number %d", |
11996 | lineno); | |
11997 | dw2_asm_output_data_uleb128 (lookup_filename (filename), | |
11998 | "Filename we just started"); | |
84a5b4f8 | 11999 | } |
a3f97cbb JW |
12000 | } |
12001 | ||
cc260610 | 12002 | /* Record the end of a source file. */ |
71dfc51f | 12003 | |
7f905405 NB |
12004 | static void |
12005 | dwarf2out_end_source_file (lineno) | |
12006 | unsigned int lineno ATTRIBUTE_UNUSED; | |
a3f97cbb | 12007 | { |
881c6935 | 12008 | if (flag_eliminate_dwarf2_dups) |
2ad9852d | 12009 | /* Record the end of the file for break_out_includes. */ |
54ba1f0d | 12010 | new_die (DW_TAG_GNU_EINCL, comp_unit_die, NULL); |
2ad9852d | 12011 | |
84a5b4f8 DB |
12012 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12013 | { | |
715bdd29 | 12014 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12015 | dw2_asm_output_data (1, DW_MACINFO_end_file, "End file"); |
12016 | } | |
a3f97cbb JW |
12017 | } |
12018 | ||
cc260610 | 12019 | /* Called from debug_define in toplev.c. The `buffer' parameter contains |
a3f97cbb JW |
12020 | the tail part of the directive line, i.e. the part which is past the |
12021 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 12022 | |
7f905405 | 12023 | static void |
9a666dda | 12024 | dwarf2out_define (lineno, buffer) |
b3694847 SS |
12025 | unsigned lineno ATTRIBUTE_UNUSED; |
12026 | const char *buffer ATTRIBUTE_UNUSED; | |
a3f97cbb | 12027 | { |
84a5b4f8 DB |
12028 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12029 | { | |
715bdd29 | 12030 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12031 | dw2_asm_output_data (1, DW_MACINFO_define, "Define macro"); |
12032 | dw2_asm_output_data_uleb128 (lineno, "At line number %d", lineno); | |
12033 | dw2_asm_output_nstring (buffer, -1, "The macro"); | |
12034 | } | |
a3f97cbb JW |
12035 | } |
12036 | ||
cc260610 | 12037 | /* Called from debug_undef in toplev.c. The `buffer' parameter contains |
a3f97cbb JW |
12038 | the tail part of the directive line, i.e. the part which is past the |
12039 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 12040 | |
7f905405 | 12041 | static void |
9a666dda | 12042 | dwarf2out_undef (lineno, buffer) |
b3694847 SS |
12043 | unsigned lineno ATTRIBUTE_UNUSED; |
12044 | const char *buffer ATTRIBUTE_UNUSED; | |
a3f97cbb | 12045 | { |
84a5b4f8 DB |
12046 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12047 | { | |
715bdd29 | 12048 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12049 | dw2_asm_output_data (1, DW_MACINFO_undef, "Undefine macro"); |
12050 | dw2_asm_output_data_uleb128 (lineno, "At line number %d", lineno); | |
12051 | dw2_asm_output_nstring (buffer, -1, "The macro"); | |
12052 | } | |
a3f97cbb JW |
12053 | } |
12054 | ||
12055 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 12056 | |
a51d908e | 12057 | static void |
e2a12aca | 12058 | dwarf2out_init (main_input_filename) |
b3694847 | 12059 | const char *main_input_filename; |
a3f97cbb | 12060 | { |
acc187f5 RH |
12061 | init_file_table (); |
12062 | ||
a3f97cbb JW |
12063 | /* Remember the name of the primary input file. */ |
12064 | primary_filename = main_input_filename; | |
12065 | ||
acc187f5 RH |
12066 | /* Add it to the file table first, under the assumption that we'll |
12067 | be emitting line number data for it first, which avoids having | |
12068 | to add an initial DW_LNS_set_file. */ | |
12069 | lookup_filename (main_input_filename); | |
a3f97cbb | 12070 | |
a3f97cbb JW |
12071 | /* Allocate the initial hunk of the decl_die_table. */ |
12072 | decl_die_table | |
3de90026 | 12073 | = (dw_die_ref *) xcalloc (DECL_DIE_TABLE_INCREMENT, sizeof (dw_die_ref)); |
a3f97cbb JW |
12074 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
12075 | decl_die_table_in_use = 0; | |
12076 | ||
12077 | /* Allocate the initial hunk of the decl_scope_table. */ | |
244a4af0 | 12078 | VARRAY_TREE_INIT (decl_scope_table, 256, "decl_scope_table"); |
a3f97cbb JW |
12079 | |
12080 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
12081 | abbrev_die_table | |
3de90026 RH |
12082 | = (dw_die_ref *) xcalloc (ABBREV_DIE_TABLE_INCREMENT, |
12083 | sizeof (dw_die_ref)); | |
a3f97cbb | 12084 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 12085 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
12086 | abbrev_die_table_in_use = 1; |
12087 | ||
12088 | /* Allocate the initial hunk of the line_info_table. */ | |
12089 | line_info_table | |
3de90026 RH |
12090 | = (dw_line_info_ref) xcalloc (LINE_INFO_TABLE_INCREMENT, |
12091 | sizeof (dw_line_info_entry)); | |
a3f97cbb | 12092 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
2ad9852d | 12093 | |
71dfc51f | 12094 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
12095 | line_info_table_in_use = 1; |
12096 | ||
556273e0 | 12097 | /* Generate the initial DIE for the .debug section. Note that the (string) |
a3f97cbb | 12098 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE |
556273e0 | 12099 | will (typically) be a relative pathname and that this pathname should be |
a3f97cbb JW |
12100 | taken as being relative to the directory from which the compiler was |
12101 | invoked when the given (base) source file was compiled. */ | |
a96c67ec | 12102 | comp_unit_die = gen_compile_unit_die (main_input_filename); |
a3f97cbb | 12103 | |
244a4af0 | 12104 | VARRAY_TREE_INIT (incomplete_types, 64, "incomplete_types"); |
244a4af0 | 12105 | |
1f8f4a0b | 12106 | VARRAY_RTX_INIT (used_rtx_varray, 32, "used_rtx_varray"); |
1865dbb5 | 12107 | |
54ba1f0d RH |
12108 | ggc_add_root (&limbo_die_list, 1, 1, mark_limbo_die_list); |
12109 | ||
5c90448c | 12110 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
9d2f2c45 RH |
12111 | ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label, |
12112 | DEBUG_ABBREV_SECTION_LABEL, 0); | |
b366352b MM |
12113 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
12114 | ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0); | |
12115 | else | |
f99ffb60 | 12116 | strcpy (text_section_label, stripattributes (TEXT_SECTION_NAME)); |
2ad9852d | 12117 | |
556273e0 | 12118 | ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label, |
8b790721 | 12119 | DEBUG_INFO_SECTION_LABEL, 0); |
556273e0 | 12120 | ASM_GENERATE_INTERNAL_LABEL (debug_line_section_label, |
8b790721 | 12121 | DEBUG_LINE_SECTION_LABEL, 0); |
2bee6045 JJ |
12122 | ASM_GENERATE_INTERNAL_LABEL (ranges_section_label, |
12123 | DEBUG_RANGES_SECTION_LABEL, 0); | |
715bdd29 | 12124 | named_section_flags (DEBUG_ABBREV_SECTION, SECTION_DEBUG); |
8b790721 | 12125 | ASM_OUTPUT_LABEL (asm_out_file, abbrev_section_label); |
715bdd29 | 12126 | named_section_flags (DEBUG_INFO_SECTION, SECTION_DEBUG); |
8b790721 | 12127 | ASM_OUTPUT_LABEL (asm_out_file, debug_info_section_label); |
715bdd29 | 12128 | named_section_flags (DEBUG_LINE_SECTION, SECTION_DEBUG); |
8b790721 | 12129 | ASM_OUTPUT_LABEL (asm_out_file, debug_line_section_label); |
2ad9852d | 12130 | |
84a5b4f8 DB |
12131 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12132 | { | |
715bdd29 | 12133 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
84a5b4f8 DB |
12134 | ASM_GENERATE_INTERNAL_LABEL (macinfo_section_label, |
12135 | DEBUG_MACINFO_SECTION_LABEL, 0); | |
12136 | ASM_OUTPUT_LABEL (asm_out_file, macinfo_section_label); | |
12137 | } | |
7c262518 RH |
12138 | |
12139 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) | |
12140 | { | |
12141 | text_section (); | |
12142 | ASM_OUTPUT_LABEL (asm_out_file, text_section_label); | |
12143 | } | |
a3f97cbb JW |
12144 | } |
12145 | ||
9eb4015a JJ |
12146 | /* Allocate a string in .debug_str hash table. */ |
12147 | ||
12148 | static hashnode | |
12149 | indirect_string_alloc (tab) | |
12150 | hash_table *tab ATTRIBUTE_UNUSED; | |
12151 | { | |
12152 | struct indirect_string_node *node; | |
12153 | ||
12154 | node = xmalloc (sizeof (struct indirect_string_node)); | |
12155 | node->refcount = 0; | |
12156 | node->form = 0; | |
12157 | node->label = NULL; | |
2ad9852d | 12158 | |
9eb4015a JJ |
12159 | return (hashnode) node; |
12160 | } | |
12161 | ||
12162 | /* A helper function for dwarf2out_finish called through | |
12163 | ht_forall. Emit one queued .debug_str string. */ | |
12164 | ||
12165 | static int | |
12166 | output_indirect_string (pfile, h, v) | |
12167 | struct cpp_reader *pfile ATTRIBUTE_UNUSED; | |
12168 | hashnode h; | |
12169 | const PTR v ATTRIBUTE_UNUSED; | |
12170 | { | |
2ad9852d | 12171 | struct indirect_string_node *node = (struct indirect_string_node *) h; |
9eb4015a | 12172 | |
9eb4015a JJ |
12173 | if (node->form == DW_FORM_strp) |
12174 | { | |
12175 | named_section_flags (DEBUG_STR_SECTION, DEBUG_STR_SECTION_FLAGS); | |
12176 | ASM_OUTPUT_LABEL (asm_out_file, node->label); | |
12177 | assemble_string ((const char *) HT_STR (&node->id), | |
12178 | HT_LEN (&node->id) + 1); | |
12179 | } | |
2ad9852d | 12180 | |
9eb4015a JJ |
12181 | return 1; |
12182 | } | |
12183 | ||
a3f97cbb JW |
12184 | /* Output stuff that dwarf requires at the end of every file, |
12185 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 12186 | |
a51d908e | 12187 | static void |
e2a12aca | 12188 | dwarf2out_finish (input_filename) |
b3694847 | 12189 | const char *input_filename ATTRIBUTE_UNUSED; |
a3f97cbb | 12190 | { |
ef76d03b | 12191 | limbo_die_node *node, *next_node; |
ae0ed63a | 12192 | dw_die_ref die = 0; |
ef76d03b JW |
12193 | |
12194 | /* Traverse the limbo die list, and add parent/child links. The only | |
12195 | dies without parents that should be here are concrete instances of | |
12196 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
12197 | For concrete instances, we can get the parent die from the abstract | |
12198 | instance. */ | |
12199 | for (node = limbo_die_list; node; node = next_node) | |
12200 | { | |
12201 | next_node = node->next; | |
12202 | die = node->die; | |
12203 | ||
12204 | if (die->die_parent == NULL) | |
12205 | { | |
a96c67ec | 12206 | dw_die_ref origin = get_AT_ref (die, DW_AT_abstract_origin); |
54ba1f0d | 12207 | tree context; |
2ad9852d | 12208 | |
a96c67ec JM |
12209 | if (origin) |
12210 | add_child_die (origin->die_parent, die); | |
ef76d03b | 12211 | else if (die == comp_unit_die) |
a96c67ec | 12212 | ; |
aea9695c RK |
12213 | /* If this was an expression for a bound involved in a function |
12214 | return type, it may be a SAVE_EXPR for which we weren't able | |
12215 | to find a DIE previously. So try now. */ | |
12216 | else if (node->created_for | |
12217 | && TREE_CODE (node->created_for) == SAVE_EXPR | |
12218 | && 0 != (origin = (lookup_decl_die | |
12219 | (SAVE_EXPR_CONTEXT | |
12220 | (node->created_for))))) | |
12221 | add_child_die (origin, die); | |
6bb28965 JM |
12222 | else if (errorcount > 0 || sorrycount > 0) |
12223 | /* It's OK to be confused by errors in the input. */ | |
12224 | add_child_die (comp_unit_die, die); | |
54ba1f0d RH |
12225 | else if (node->created_for |
12226 | && ((DECL_P (node->created_for) | |
c26fbbca | 12227 | && (context = DECL_CONTEXT (node->created_for))) |
54ba1f0d RH |
12228 | || (TYPE_P (node->created_for) |
12229 | && (context = TYPE_CONTEXT (node->created_for)))) | |
12230 | && TREE_CODE (context) == FUNCTION_DECL) | |
12231 | { | |
12232 | /* In certain situations, the lexical block containing a | |
12233 | nested function can be optimized away, which results | |
12234 | in the nested function die being orphaned. Likewise | |
12235 | with the return type of that nested function. Force | |
12236 | this to be a child of the containing function. */ | |
12237 | origin = lookup_decl_die (context); | |
12238 | if (! origin) | |
12239 | abort (); | |
12240 | add_child_die (origin, die); | |
12241 | } | |
ef76d03b JW |
12242 | else |
12243 | abort (); | |
12244 | } | |
2ad9852d | 12245 | |
ef76d03b JW |
12246 | free (node); |
12247 | } | |
2ad9852d | 12248 | |
a96c67ec | 12249 | limbo_die_list = NULL; |
ef76d03b | 12250 | |
8a8c3656 JM |
12251 | /* Walk through the list of incomplete types again, trying once more to |
12252 | emit full debugging info for them. */ | |
12253 | retry_incomplete_types (); | |
12254 | ||
881c6935 JM |
12255 | /* We need to reverse all the dies before break_out_includes, or |
12256 | we'll see the end of an include file before the beginning. */ | |
12257 | reverse_all_dies (comp_unit_die); | |
12258 | ||
12259 | /* Generate separate CUs for each of the include files we've seen. | |
12260 | They will go into limbo_die_list. */ | |
5f632b5e JM |
12261 | if (flag_eliminate_dwarf2_dups) |
12262 | break_out_includes (comp_unit_die); | |
881c6935 JM |
12263 | |
12264 | /* Traverse the DIE's and add add sibling attributes to those DIE's | |
12265 | that have children. */ | |
a3f97cbb | 12266 | add_sibling_attributes (comp_unit_die); |
881c6935 JM |
12267 | for (node = limbo_die_list; node; node = node->next) |
12268 | add_sibling_attributes (node->die); | |
a3f97cbb JW |
12269 | |
12270 | /* Output a terminator label for the .text section. */ | |
7c262518 | 12271 | text_section (); |
5c90448c | 12272 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 12273 | |
db3c0315 MM |
12274 | /* Output the source line correspondence table. We must do this |
12275 | even if there is no line information. Otherwise, on an empty | |
12276 | translation unit, we will generate a present, but empty, | |
12277 | .debug_info section. IRIX 6.5 `nm' will then complain when | |
12278 | examining the file. */ | |
12279 | if (! DWARF2_ASM_LINE_DEBUG_INFO) | |
e90b62db | 12280 | { |
715bdd29 | 12281 | named_section_flags (DEBUG_LINE_SECTION, SECTION_DEBUG); |
db3c0315 MM |
12282 | output_line_info (); |
12283 | } | |
71dfc51f | 12284 | |
b38a75e5 RH |
12285 | /* Output location list section if necessary. */ |
12286 | if (have_location_lists) | |
12287 | { | |
12288 | /* Output the location lists info. */ | |
12289 | named_section_flags (DEBUG_LOC_SECTION, SECTION_DEBUG); | |
12290 | ASM_GENERATE_INTERNAL_LABEL (loc_section_label, | |
12291 | DEBUG_LOC_SECTION_LABEL, 0); | |
12292 | ASM_OUTPUT_LABEL (asm_out_file, loc_section_label); | |
12293 | output_location_lists (die); | |
12294 | have_location_lists = 0; | |
12295 | } | |
12296 | ||
db3c0315 MM |
12297 | /* We can only use the low/high_pc attributes if all of the code was |
12298 | in .text. */ | |
12299 | if (separate_line_info_table_in_use == 0) | |
12300 | { | |
12301 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label); | |
12302 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); | |
e90b62db | 12303 | } |
2ad9852d RK |
12304 | |
12305 | /* If it wasn't, we need to give .debug_loc and .debug_ranges an appropriate | |
12306 | "base address". Use zero so that these addresses become absolute. */ | |
a20612aa RH |
12307 | else if (have_location_lists || ranges_table_in_use) |
12308 | add_AT_addr (comp_unit_die, DW_AT_entry_pc, const0_rtx); | |
e90b62db | 12309 | |
fe7cd37f RH |
12310 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
12311 | add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list, | |
12312 | debug_line_section_label); | |
db3c0315 | 12313 | |
84a5b4f8 DB |
12314 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
12315 | add_AT_lbl_offset (comp_unit_die, DW_AT_macro_info, macinfo_section_label); | |
a96c67ec | 12316 | |
881c6935 JM |
12317 | /* Output all of the compilation units. We put the main one last so that |
12318 | the offsets are available to output_pubnames. */ | |
12319 | for (node = limbo_die_list; node; node = node->next) | |
12320 | output_comp_unit (node->die); | |
2ad9852d | 12321 | |
881c6935 JM |
12322 | output_comp_unit (comp_unit_die); |
12323 | ||
a3f97cbb | 12324 | /* Output the abbreviation table. */ |
715bdd29 | 12325 | named_section_flags (DEBUG_ABBREV_SECTION, SECTION_DEBUG); |
a3f97cbb JW |
12326 | output_abbrev_section (); |
12327 | ||
2ad9852d | 12328 | /* Output public names table if necessary. */ |
d291dd49 JM |
12329 | if (pubname_table_in_use) |
12330 | { | |
715bdd29 | 12331 | named_section_flags (DEBUG_PUBNAMES_SECTION, SECTION_DEBUG); |
d291dd49 JM |
12332 | output_pubnames (); |
12333 | } | |
12334 | ||
2ad9852d RK |
12335 | /* Output the address range information. We only put functions in the arange |
12336 | table, so don't write it out if we don't have any. */ | |
a3f97cbb JW |
12337 | if (fde_table_in_use) |
12338 | { | |
715bdd29 | 12339 | named_section_flags (DEBUG_ARANGES_SECTION, SECTION_DEBUG); |
a3f97cbb JW |
12340 | output_aranges (); |
12341 | } | |
a20612aa | 12342 | |
a20612aa RH |
12343 | /* Output ranges section if necessary. */ |
12344 | if (ranges_table_in_use) | |
12345 | { | |
715bdd29 | 12346 | named_section_flags (DEBUG_RANGES_SECTION, SECTION_DEBUG); |
2bee6045 | 12347 | ASM_OUTPUT_LABEL (asm_out_file, ranges_section_label); |
a20612aa RH |
12348 | output_ranges (); |
12349 | } | |
12350 | ||
30f7a378 | 12351 | /* Have to end the primary source file. */ |
cc260610 | 12352 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
c26fbbca | 12353 | { |
715bdd29 | 12354 | named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG); |
cc260610 | 12355 | dw2_asm_output_data (1, DW_MACINFO_end_file, "End file"); |
2f8d482e | 12356 | dw2_asm_output_data (1, 0, "End compilation unit"); |
cc260610 | 12357 | } |
9eb4015a | 12358 | |
2ad9852d | 12359 | /* If we emitted any DW_FORM_strp form attribute, output the string |
9eb4015a JJ |
12360 | table too. */ |
12361 | if (debug_str_hash) | |
12362 | ht_forall (debug_str_hash, output_indirect_string, NULL); | |
a3f97cbb | 12363 | } |
e2500fed GK |
12364 | #else |
12365 | ||
12366 | /* This should never be used, but its address is needed for comparisons. */ | |
12367 | const struct gcc_debug_hooks dwarf2_debug_hooks; | |
12368 | ||
12369 | #endif /* DWARF2_DEBUGGING_INFO */ | |
12370 | ||
12371 | #include "gt-dwarf2out.h" |