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Commit | Line | Data |
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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
1917ef85 | 2 | Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
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 JW |
7 | |
8 | This file is part of GNU CC. | |
9 | ||
10 | GNU CC is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
15 | GNU CC is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GNU CC; see the file COPYING. If not, write to | |
5f38fdda JL |
22 | the Free Software Foundation, 59 Temple Place - Suite 330, |
23 | Boston, MA 02111-1307, USA. */ | |
a3f97cbb | 24 | |
a96c67ec | 25 | /* TODO: Implement .debug_str handling, and share entries somehow. |
348bb3c7 JM |
26 | Emit .debug_line header even when there are no functions, since |
27 | the file numbers are used by .debug_info. Alternately, leave | |
28 | out locations for types and decls. | |
29 | Avoid talking about ctors and op= for PODs. | |
30 | Factor out common prologue sequences into multiple CIEs. */ | |
31 | ||
3f76745e JM |
32 | /* The first part of this file deals with the DWARF 2 frame unwind |
33 | information, which is also used by the GCC efficient exception handling | |
34 | mechanism. The second part, controlled only by an #ifdef | |
35 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
36 | information. */ | |
37 | ||
0021b564 | 38 | #include "config.h" |
670ee920 | 39 | #include "system.h" |
a3f97cbb JW |
40 | #include "tree.h" |
41 | #include "flags.h" | |
42 | #include "rtl.h" | |
43 | #include "hard-reg-set.h" | |
44 | #include "regs.h" | |
45 | #include "insn-config.h" | |
46 | #include "reload.h" | |
47 | #include "output.h" | |
71dfc51f | 48 | #include "expr.h" |
3f76745e | 49 | #include "except.h" |
a7cc7f29 | 50 | #include "dwarf2.h" |
76ead72b | 51 | #include "dwarf2out.h" |
10f0ad3d | 52 | #include "toplev.h" |
1865dbb5 | 53 | #include "varray.h" |
951a525f | 54 | #include "ggc.h" |
881c6935 | 55 | #include "md5.h" |
57bed152 | 56 | #include "tm_p.h" |
a3f97cbb | 57 | |
770ca8c6 JO |
58 | /* DWARF2 Abbreviation Glossary: |
59 | CFA = Canonical Frame Address | |
00a42e21 JM |
60 | a fixed address on the stack which identifies a call frame. |
61 | We define it to be the value of SP just before the call insn. | |
62 | The CFA register and offset, which may change during the course | |
63 | of the function, are used to calculate its value at runtime. | |
a401107d JO |
64 | CFI = Call Frame Instruction |
65 | an instruction for the DWARF2 abstract machine | |
770ca8c6 JO |
66 | CIE = Common Information Entry |
67 | information describing information common to one or more FDEs | |
68 | DIE = Debugging Information Entry | |
69 | FDE = Frame Description Entry | |
70 | information describing the stack call frame, in particular, | |
71 | how to restore registers | |
72 | ||
73 | DW_CFA_... = DWARF2 CFA call frame instruction | |
74 | DW_TAG_... = DWARF2 DIE tag */ | |
75 | ||
0021b564 JM |
76 | /* Decide whether we want to emit frame unwind information for the current |
77 | translation unit. */ | |
78 | ||
79 | int | |
80 | dwarf2out_do_frame () | |
81 | { | |
82 | return (write_symbols == DWARF2_DEBUG | |
9ec36da5 | 83 | #ifdef DWARF2_FRAME_INFO |
556273e0 | 84 | || DWARF2_FRAME_INFO |
9ec36da5 | 85 | #endif |
0021b564 | 86 | #ifdef DWARF2_UNWIND_INFO |
14a774a9 | 87 | || flag_unwind_tables |
0021b564 JM |
88 | || (flag_exceptions && ! exceptions_via_longjmp) |
89 | #endif | |
90 | ); | |
91 | } | |
92 | ||
93 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
94 | ||
eaf95893 RK |
95 | /* How to start an assembler comment. */ |
96 | #ifndef ASM_COMMENT_START | |
97 | #define ASM_COMMENT_START ";#" | |
98 | #endif | |
99 | ||
a3f97cbb JW |
100 | typedef struct dw_cfi_struct *dw_cfi_ref; |
101 | typedef struct dw_fde_struct *dw_fde_ref; | |
102 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
103 | |
104 | /* Call frames are described using a sequence of Call Frame | |
105 | Information instructions. The register number, offset | |
106 | and address fields are provided as possible operands; | |
107 | their use is selected by the opcode field. */ | |
71dfc51f | 108 | |
a3f97cbb | 109 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
110 | { |
111 | unsigned long dw_cfi_reg_num; | |
112 | long int dw_cfi_offset; | |
d3e3972c | 113 | const char *dw_cfi_addr; |
7d9d8943 | 114 | struct dw_loc_descr_struct *dw_cfi_loc; |
71dfc51f | 115 | } |
a3f97cbb JW |
116 | dw_cfi_oprnd; |
117 | ||
118 | typedef struct dw_cfi_struct | |
71dfc51f RK |
119 | { |
120 | dw_cfi_ref dw_cfi_next; | |
121 | enum dwarf_call_frame_info dw_cfi_opc; | |
122 | dw_cfi_oprnd dw_cfi_oprnd1; | |
123 | dw_cfi_oprnd dw_cfi_oprnd2; | |
124 | } | |
a3f97cbb JW |
125 | dw_cfi_node; |
126 | ||
7d9d8943 AM |
127 | /* This is how we define the location of the CFA. We use to handle it |
128 | as REG + OFFSET all the time, but now it can be more complex. | |
129 | It can now be either REG + CFA_OFFSET or *(REG + BASE_OFFSET) + CFA_OFFSET. | |
556273e0 | 130 | Instead of passing around REG and OFFSET, we pass a copy |
7d9d8943 AM |
131 | of this structure. */ |
132 | typedef struct cfa_loc | |
133 | { | |
556273e0 | 134 | unsigned long reg; |
7d9d8943 AM |
135 | long offset; |
136 | long base_offset; | |
137 | int indirect; /* 1 if CFA is accessed via a dereference. */ | |
138 | } dw_cfa_location; | |
139 | ||
a3f97cbb | 140 | /* All call frame descriptions (FDE's) in the GCC generated DWARF |
4b674448 | 141 | refer to a single Common Information Entry (CIE), defined at |
a3f97cbb JW |
142 | the beginning of the .debug_frame section. This used of a single |
143 | CIE obviates the need to keep track of multiple CIE's | |
144 | in the DWARF generation routines below. */ | |
71dfc51f | 145 | |
a3f97cbb | 146 | typedef struct dw_fde_struct |
71dfc51f | 147 | { |
d3e3972c KG |
148 | const char *dw_fde_begin; |
149 | const char *dw_fde_current_label; | |
150 | const char *dw_fde_end; | |
71dfc51f | 151 | dw_cfi_ref dw_fde_cfi; |
737faf14 | 152 | int nothrow; |
71dfc51f | 153 | } |
a3f97cbb JW |
154 | dw_fde_node; |
155 | ||
a3f97cbb JW |
156 | /* Maximum size (in bytes) of an artificially generated label. */ |
157 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
158 | ||
a1a4189d | 159 | /* The size of the target's pointer type. */ |
a3f97cbb | 160 | #ifndef PTR_SIZE |
a9d38797 | 161 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
a3f97cbb JW |
162 | #endif |
163 | ||
a1a4189d JB |
164 | /* The size of addresses as they appear in the Dwarf 2 data. |
165 | Some architectures use word addresses to refer to code locations, | |
166 | but Dwarf 2 info always uses byte addresses. On such machines, | |
167 | Dwarf 2 addresses need to be larger than the architecture's | |
168 | pointers. */ | |
169 | #ifndef DWARF2_ADDR_SIZE | |
170 | #define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT) | |
171 | #endif | |
172 | ||
7e23cb16 | 173 | /* The size in bytes of a DWARF field indicating an offset or length |
a1a4189d JB |
174 | relative to a debug info section, specified to be 4 bytes in the |
175 | DWARF-2 specification. The SGI/MIPS ABI defines it to be the same | |
b13fe8bf | 176 | as PTR_SIZE. */ |
71dfc51f | 177 | |
7e23cb16 JM |
178 | #ifndef DWARF_OFFSET_SIZE |
179 | #define DWARF_OFFSET_SIZE 4 | |
180 | #endif | |
181 | ||
9a666dda JM |
182 | #define DWARF_VERSION 2 |
183 | ||
7e23cb16 JM |
184 | /* Round SIZE up to the nearest BOUNDARY. */ |
185 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
262b6384 | 186 | ((((SIZE) + (BOUNDARY) - 1) / (BOUNDARY)) * (BOUNDARY)) |
a3f97cbb | 187 | |
a3f97cbb | 188 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
27c35f4b | 189 | #ifndef DWARF_CIE_DATA_ALIGNMENT |
469ac993 | 190 | #ifdef STACK_GROWS_DOWNWARD |
08cb3d38 | 191 | #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD)) |
469ac993 | 192 | #else |
08cb3d38 | 193 | #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD) |
469ac993 | 194 | #endif |
27c35f4b | 195 | #endif /* not DWARF_CIE_DATA_ALIGNMENT */ |
a3f97cbb | 196 | |
3f76745e JM |
197 | /* A pointer to the base of a table that contains frame description |
198 | information for each routine. */ | |
199 | static dw_fde_ref fde_table; | |
a3f97cbb | 200 | |
3f76745e JM |
201 | /* Number of elements currently allocated for fde_table. */ |
202 | static unsigned fde_table_allocated; | |
a94dbf2c | 203 | |
3f76745e JM |
204 | /* Number of elements in fde_table currently in use. */ |
205 | static unsigned fde_table_in_use; | |
a3f97cbb | 206 | |
3f76745e JM |
207 | /* Size (in elements) of increments by which we may expand the |
208 | fde_table. */ | |
209 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 210 | |
a94dbf2c JM |
211 | /* A list of call frame insns for the CIE. */ |
212 | static dw_cfi_ref cie_cfi_head; | |
213 | ||
a3f97cbb JW |
214 | /* The number of the current function definition for which debugging |
215 | information is being generated. These numbers range from 1 up to the | |
216 | maximum number of function definitions contained within the current | |
217 | compilation unit. These numbers are used to create unique label id's | |
218 | unique to each function definition. */ | |
4f988ea2 | 219 | static unsigned current_funcdef_number = 0; |
a3f97cbb JW |
220 | |
221 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
222 | attribute that accelerates the lookup of the FDE associated | |
556273e0 | 223 | with the subprogram. This variable holds the table index of the FDE |
a3f97cbb JW |
224 | associated with the current function (body) definition. */ |
225 | static unsigned current_funcdef_fde; | |
226 | ||
a3f97cbb | 227 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 228 | |
83d2b3b9 KG |
229 | static char *stripattributes PARAMS ((const char *)); |
230 | static const char *dwarf_cfi_name PARAMS ((unsigned)); | |
231 | static dw_cfi_ref new_cfi PARAMS ((void)); | |
232 | static void add_cfi PARAMS ((dw_cfi_ref *, dw_cfi_ref)); | |
233 | static unsigned long size_of_uleb128 PARAMS ((unsigned long)); | |
234 | static unsigned long size_of_sleb128 PARAMS ((long)); | |
235 | static void output_uleb128 PARAMS ((unsigned long)); | |
236 | static void output_sleb128 PARAMS ((long)); | |
d3e3972c | 237 | static void add_fde_cfi PARAMS ((const char *, dw_cfi_ref)); |
7d9d8943 AM |
238 | static void lookup_cfa_1 PARAMS ((dw_cfi_ref, dw_cfa_location *)); |
239 | static void lookup_cfa PARAMS ((dw_cfa_location *)); | |
d3e3972c KG |
240 | static void reg_save PARAMS ((const char *, unsigned, |
241 | unsigned, long)); | |
83d2b3b9 | 242 | static void initial_return_save PARAMS ((rtx)); |
5e640c56 | 243 | static long stack_adjust_offset PARAMS ((rtx)); |
83d2b3b9 KG |
244 | static void output_cfi PARAMS ((dw_cfi_ref, dw_fde_ref)); |
245 | static void output_call_frame_info PARAMS ((int)); | |
83d2b3b9 | 246 | static void dwarf2out_stack_adjust PARAMS ((rtx)); |
d3e3972c | 247 | static void dwarf2out_frame_debug_expr PARAMS ((rtx, const char *)); |
a3f97cbb | 248 | |
7d9d8943 AM |
249 | /* Support for complex CFA locations. */ |
250 | static void output_cfa_loc PARAMS ((dw_cfi_ref)); | |
556273e0 | 251 | static void get_cfa_from_loc_descr PARAMS ((dw_cfa_location *, |
7d9d8943 AM |
252 | struct dw_loc_descr_struct *)); |
253 | static struct dw_loc_descr_struct *build_cfa_loc | |
254 | PARAMS ((dw_cfa_location *)); | |
255 | static void def_cfa_1 PARAMS ((const char *, dw_cfa_location *)); | |
256 | ||
a3f97cbb JW |
257 | /* Definitions of defaults for assembler-dependent names of various |
258 | pseudo-ops and section names. | |
259 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
260 | assembler. */ | |
71dfc51f | 261 | |
0021b564 | 262 | #ifdef OBJECT_FORMAT_ELF |
a3f97cbb | 263 | #ifndef UNALIGNED_SHORT_ASM_OP |
0a3e1f45 | 264 | #define UNALIGNED_SHORT_ASM_OP "\t.2byte\t" |
a3f97cbb JW |
265 | #endif |
266 | #ifndef UNALIGNED_INT_ASM_OP | |
0a3e1f45 | 267 | #define UNALIGNED_INT_ASM_OP "\t.4byte\t" |
a3f97cbb | 268 | #endif |
7e23cb16 | 269 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
0a3e1f45 | 270 | #define UNALIGNED_DOUBLE_INT_ASM_OP "\t.8byte\t" |
7e23cb16 | 271 | #endif |
0021b564 JM |
272 | #endif /* OBJECT_FORMAT_ELF */ |
273 | ||
a3f97cbb | 274 | #ifndef ASM_BYTE_OP |
0a3e1f45 | 275 | #define ASM_BYTE_OP "\t.byte\t" |
a3f97cbb JW |
276 | #endif |
277 | ||
7e23cb16 JM |
278 | /* Data and reference forms for relocatable data. */ |
279 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
280 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
281 | ||
a3f97cbb JW |
282 | /* Pseudo-op for defining a new section. */ |
283 | #ifndef SECTION_ASM_OP | |
0a3e1f45 | 284 | #define SECTION_ASM_OP "\t.section\t" |
a3f97cbb JW |
285 | #endif |
286 | ||
287 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
288 | print the SECTION_ASM_OP and the section name. The default here works for | |
289 | almost all svr4 assemblers, except for the sparc, where the section name | |
290 | must be enclosed in double quotes. (See sparcv4.h). */ | |
291 | #ifndef SECTION_FORMAT | |
c53aa195 JM |
292 | #ifdef PUSHSECTION_FORMAT |
293 | #define SECTION_FORMAT PUSHSECTION_FORMAT | |
294 | #else | |
e8638df0 | 295 | #define SECTION_FORMAT "%s%s\n" |
c53aa195 | 296 | #endif |
a3f97cbb JW |
297 | #endif |
298 | ||
a3f97cbb JW |
299 | #ifndef FRAME_SECTION |
300 | #define FRAME_SECTION ".debug_frame" | |
301 | #endif | |
a3f97cbb | 302 | |
5c90448c JM |
303 | #ifndef FUNC_BEGIN_LABEL |
304 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 305 | #endif |
5c90448c JM |
306 | #ifndef FUNC_END_LABEL |
307 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 308 | #endif |
a6ab3aad JM |
309 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
310 | #define CIE_END_LABEL "LECIE" | |
2ed2af28 | 311 | #define CIE_LENGTH_LABEL "LLCIE" |
a6ab3aad JM |
312 | #define FDE_AFTER_SIZE_LABEL "LSFDE" |
313 | #define FDE_END_LABEL "LEFDE" | |
2ed2af28 | 314 | #define FDE_LENGTH_LABEL "LLFDE" |
881c6935 | 315 | #define DIE_LABEL_PREFIX "DW" |
a3f97cbb | 316 | |
a3f97cbb JW |
317 | /* Definitions of defaults for various types of primitive assembly language |
318 | output operations. These may be overridden from within the tm.h file, | |
956d6950 | 319 | but typically, that is unnecessary. */ |
71dfc51f | 320 | |
a3f97cbb JW |
321 | #ifndef ASM_OUTPUT_SECTION |
322 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
323 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
324 | #endif | |
325 | ||
0021b564 JM |
326 | #ifndef ASM_OUTPUT_DWARF_DATA1 |
327 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
e8638df0 | 328 | fprintf ((FILE), "%s0x%x", ASM_BYTE_OP, (unsigned) (VALUE)) |
0021b564 JM |
329 | #endif |
330 | ||
bb727b5a JM |
331 | #ifndef ASM_OUTPUT_DWARF_DELTA1 |
332 | #define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 333 | do { fprintf ((FILE), "%s", ASM_BYTE_OP); \ |
bb727b5a JM |
334 | assemble_name (FILE, LABEL1); \ |
335 | fprintf (FILE, "-"); \ | |
336 | assemble_name (FILE, LABEL2); \ | |
337 | } while (0) | |
338 | #endif | |
339 | ||
0021b564 JM |
340 | #ifdef UNALIGNED_INT_ASM_OP |
341 | ||
342 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
343 | #define UNALIGNED_OFFSET_ASM_OP \ | |
344 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
345 | #endif | |
346 | ||
347 | #ifndef UNALIGNED_WORD_ASM_OP | |
a1a4189d JB |
348 | #define UNALIGNED_WORD_ASM_OP \ |
349 | ((DWARF2_ADDR_SIZE) == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP \ | |
350 | : (DWARF2_ADDR_SIZE) == 2 ? UNALIGNED_SHORT_ASM_OP \ | |
351 | : UNALIGNED_INT_ASM_OP) | |
0021b564 JM |
352 | #endif |
353 | ||
a3f97cbb JW |
354 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
355 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 356 | do { fprintf ((FILE), "%s", UNALIGNED_SHORT_ASM_OP); \ |
a3f97cbb JW |
357 | assemble_name (FILE, LABEL1); \ |
358 | fprintf (FILE, "-"); \ | |
359 | assemble_name (FILE, LABEL2); \ | |
360 | } while (0) | |
361 | #endif | |
362 | ||
363 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
364 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 365 | do { fprintf ((FILE), "%s", UNALIGNED_INT_ASM_OP); \ |
a3f97cbb JW |
366 | assemble_name (FILE, LABEL1); \ |
367 | fprintf (FILE, "-"); \ | |
368 | assemble_name (FILE, LABEL2); \ | |
369 | } while (0) | |
370 | #endif | |
371 | ||
7e23cb16 JM |
372 | #ifndef ASM_OUTPUT_DWARF_DELTA |
373 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 374 | do { fprintf ((FILE), "%s", UNALIGNED_OFFSET_ASM_OP); \ |
7e23cb16 JM |
375 | assemble_name (FILE, LABEL1); \ |
376 | fprintf (FILE, "-"); \ | |
377 | assemble_name (FILE, LABEL2); \ | |
378 | } while (0) | |
379 | #endif | |
380 | ||
381 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
382 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 383 | do { fprintf ((FILE), "%s", UNALIGNED_WORD_ASM_OP); \ |
7e23cb16 JM |
384 | assemble_name (FILE, LABEL1); \ |
385 | fprintf (FILE, "-"); \ | |
386 | assemble_name (FILE, LABEL2); \ | |
387 | } while (0) | |
388 | #endif | |
389 | ||
a3f97cbb JW |
390 | #ifndef ASM_OUTPUT_DWARF_ADDR |
391 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
e8638df0 | 392 | do { fprintf ((FILE), "%s", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
393 | assemble_name (FILE, LABEL); \ |
394 | } while (0) | |
395 | #endif | |
396 | ||
397 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
1865dbb5 JM |
398 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) \ |
399 | do { \ | |
e8638df0 | 400 | fprintf ((FILE), "%s", UNALIGNED_WORD_ASM_OP); \ |
1865dbb5 | 401 | output_addr_const ((FILE), (RTX)); \ |
1865dbb5 | 402 | } while (0) |
7e23cb16 JM |
403 | #endif |
404 | ||
7bb9fb0e JM |
405 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
406 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
e8638df0 | 407 | do { fprintf ((FILE), "%s", UNALIGNED_INT_ASM_OP); \ |
7bb9fb0e JM |
408 | assemble_name (FILE, LABEL); \ |
409 | } while (0) | |
410 | #endif | |
411 | ||
7e23cb16 JM |
412 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
413 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
e8638df0 | 414 | do { fprintf ((FILE), "%s", UNALIGNED_OFFSET_ASM_OP); \ |
7e23cb16 JM |
415 | assemble_name (FILE, LABEL); \ |
416 | } while (0) | |
a3f97cbb JW |
417 | #endif |
418 | ||
a3f97cbb JW |
419 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
420 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
e8638df0 | 421 | fprintf ((FILE), "%s0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
422 | #endif |
423 | ||
424 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
425 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
e8638df0 | 426 | fprintf ((FILE), "%s0x%x", UNALIGNED_INT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
427 | #endif |
428 | ||
21217bd0 JW |
429 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
430 | #define ASM_OUTPUT_DWARF_DATA8(FILE,VALUE) \ | |
e8638df0 | 431 | fprintf ((FILE), "%s0x%lx", UNALIGNED_DOUBLE_INT_ASM_OP, \ |
21217bd0 JW |
432 | (unsigned long) (VALUE)) |
433 | #endif | |
434 | ||
7e23cb16 JM |
435 | #ifndef ASM_OUTPUT_DWARF_DATA |
436 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
e8638df0 | 437 | fprintf ((FILE), "%s0x%lx", UNALIGNED_OFFSET_ASM_OP, \ |
32bd96ff | 438 | (unsigned long) (VALUE)) |
7e23cb16 JM |
439 | #endif |
440 | ||
441 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
442 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
e8638df0 | 443 | fprintf ((FILE), "%s0x%lx", UNALIGNED_WORD_ASM_OP, \ |
32bd96ff | 444 | (unsigned long) (VALUE)) |
7e23cb16 JM |
445 | #endif |
446 | ||
21217bd0 JW |
447 | #ifndef ASM_OUTPUT_DWARF_CONST_DOUBLE |
448 | #define ASM_OUTPUT_DWARF_CONST_DOUBLE(FILE,HIGH_VALUE,LOW_VALUE) \ | |
a3f97cbb JW |
449 | do { \ |
450 | if (WORDS_BIG_ENDIAN) \ | |
451 | { \ | |
e8638df0 HPN |
452 | fprintf ((FILE), "%s0x%lx\n", UNALIGNED_INT_ASM_OP, (HIGH_VALUE));\ |
453 | fprintf ((FILE), "%s0x%lx", UNALIGNED_INT_ASM_OP, (LOW_VALUE));\ | |
a3f97cbb JW |
454 | } \ |
455 | else \ | |
456 | { \ | |
e8638df0 HPN |
457 | fprintf ((FILE), "%s0x%lx\n", UNALIGNED_INT_ASM_OP, (LOW_VALUE)); \ |
458 | fprintf ((FILE), "%s0x%lx", UNALIGNED_INT_ASM_OP, (HIGH_VALUE)); \ | |
a3f97cbb JW |
459 | } \ |
460 | } while (0) | |
461 | #endif | |
462 | ||
0021b564 JM |
463 | #else /* UNALIGNED_INT_ASM_OP */ |
464 | ||
465 | /* We don't have unaligned support, let's hope the normal output works for | |
e09bbb25 JM |
466 | .debug_frame. But we know it won't work for .debug_info. */ |
467 | ||
468 | #ifdef DWARF2_DEBUGGING_INFO | |
63bc1d05 | 469 | #error DWARF2_DEBUGGING_INFO requires UNALIGNED_INT_ASM_OP. |
e09bbb25 | 470 | #endif |
0021b564 | 471 | |
0517872a | 472 | #ifndef ASM_OUTPUT_DWARF_ADDR |
0021b564 | 473 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ |
a1a4189d | 474 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, LABEL), DWARF2_ADDR_SIZE, 1) |
0517872a JM |
475 | #endif |
476 | ||
477 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
478 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) ASM_OUTPUT_DWARF_ADDR (FILE,RTX) | |
479 | #endif | |
0021b564 | 480 | |
0517872a | 481 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
7bb9fb0e | 482 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
38a448ca | 483 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0517872a | 484 | #endif |
7bb9fb0e | 485 | |
0517872a | 486 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
0021b564 | 487 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
38a448ca | 488 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0517872a | 489 | #endif |
0021b564 | 490 | |
0517872a | 491 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
0021b564 | 492 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ |
38a448ca | 493 | assemble_integer (gen_rtx_MINUS (HImode, \ |
c5c76735 JL |
494 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
495 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 | 496 | 2, 1) |
0517872a | 497 | #endif |
556273e0 | 498 | |
0517872a | 499 | #ifndef ASM_OUTPUT_DWARF_DELTA4 |
0021b564 | 500 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ |
38a448ca | 501 | assemble_integer (gen_rtx_MINUS (SImode, \ |
c5c76735 JL |
502 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
503 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 | 504 | 4, 1) |
0517872a | 505 | #endif |
0021b564 | 506 | |
0517872a | 507 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA |
0021b564 | 508 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ |
38a448ca | 509 | assemble_integer (gen_rtx_MINUS (Pmode, \ |
c5c76735 JL |
510 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
511 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
a1a4189d | 512 | DWARF2_ADDR_SIZE, 1) |
0517872a | 513 | #endif |
0021b564 | 514 | |
0517872a | 515 | #ifndef ASM_OUTPUT_DWARF_DELTA |
0021b564 JM |
516 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ |
517 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
0517872a | 518 | #endif |
0021b564 | 519 | |
0517872a | 520 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
e0e07bd1 JM |
521 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ |
522 | assemble_integer (GEN_INT (VALUE), 2, 1) | |
0517872a | 523 | #endif |
e0e07bd1 | 524 | |
0517872a | 525 | #ifndef ASM_OUTPUT_DWARF_DATA4 |
0021b564 JM |
526 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ |
527 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
0517872a | 528 | #endif |
0021b564 JM |
529 | |
530 | #endif /* UNALIGNED_INT_ASM_OP */ | |
531 | ||
2ed2af28 PDM |
532 | #ifdef SET_ASM_OP |
533 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
534 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
535 | do { \ | |
e8638df0 | 536 | fprintf (FILE, "%s", SET_ASM_OP); \ |
7bb9fb0e JM |
537 | assemble_name (FILE, SY); \ |
538 | fputc (',', FILE); \ | |
539 | assemble_name (FILE, HI); \ | |
540 | fputc ('-', FILE); \ | |
541 | assemble_name (FILE, LO); \ | |
542 | } while (0) | |
2ed2af28 PDM |
543 | #endif |
544 | #endif /* SET_ASM_OP */ | |
545 | ||
a6ab3aad | 546 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 547 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad | 548 | at the end of the line, so we must avoid output of a newline here. */ |
0b34cf1e UD |
549 | #ifndef ASM_OUTPUT_DWARF_NSTRING |
550 | #define ASM_OUTPUT_DWARF_NSTRING(FILE,P,SLEN) \ | |
a6ab3aad | 551 | do { \ |
0b34cf1e | 552 | register int slen = (SLEN); \ |
d560ee52 | 553 | register const char *p = (P); \ |
a6ab3aad JM |
554 | register int i; \ |
555 | fprintf (FILE, "\t.ascii \""); \ | |
556 | for (i = 0; i < slen; i++) \ | |
557 | { \ | |
558 | register int c = p[i]; \ | |
559 | if (c == '\"' || c == '\\') \ | |
560 | putc ('\\', FILE); \ | |
f3ad1f9c | 561 | if (ISPRINT(c)) \ |
a6ab3aad JM |
562 | putc (c, FILE); \ |
563 | else \ | |
564 | { \ | |
565 | fprintf (FILE, "\\%o", c); \ | |
566 | } \ | |
567 | } \ | |
568 | fprintf (FILE, "\\0\""); \ | |
569 | } \ | |
570 | while (0) | |
571 | #endif | |
0b34cf1e UD |
572 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ |
573 | ASM_OUTPUT_DWARF_NSTRING (FILE, P, strlen (P)) | |
a6ab3aad | 574 | |
c8cc5c4a | 575 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
576 | is the column for PC, or the first column after all of the hard |
577 | registers. */ | |
c8cc5c4a | 578 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
579 | #ifdef PC_REGNUM |
580 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
581 | #else | |
3073d01c | 582 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS |
a94dbf2c | 583 | #endif |
c8cc5c4a JM |
584 | #endif |
585 | ||
586 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 587 | default, we just provide columns for all registers. */ |
c8cc5c4a | 588 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 589 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 590 | #endif |
3f76745e | 591 | |
0021b564 JM |
592 | /* Hook used by __throw. */ |
593 | ||
594 | rtx | |
595 | expand_builtin_dwarf_fp_regnum () | |
596 | { | |
597 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
598 | } | |
599 | ||
a6ab3aad JM |
600 | /* The offset from the incoming value of %sp to the top of the stack frame |
601 | for the current function. */ | |
602 | #ifndef INCOMING_FRAME_SP_OFFSET | |
603 | #define INCOMING_FRAME_SP_OFFSET 0 | |
604 | #endif | |
605 | ||
71dfc51f | 606 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 607 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
608 | |
609 | static inline char * | |
a3f97cbb | 610 | stripattributes (s) |
d560ee52 | 611 | const char *s; |
a3f97cbb | 612 | { |
bf20f341 | 613 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
614 | char *p = stripped; |
615 | ||
bf20f341 JW |
616 | *p++ = '*'; |
617 | ||
618 | while (*s && *s != ',') | |
619 | *p++ = *s++; | |
71dfc51f | 620 | |
a3f97cbb JW |
621 | *p = '\0'; |
622 | return stripped; | |
623 | } | |
624 | ||
d9d5c9de | 625 | /* Generate code to initialize the register size table. */ |
2f3ca9e7 | 626 | |
d9d5c9de BS |
627 | void |
628 | expand_builtin_init_dwarf_reg_sizes (address) | |
629 | tree address; | |
2f3ca9e7 | 630 | { |
d9d5c9de BS |
631 | int i; |
632 | enum machine_mode mode = TYPE_MODE (char_type_node); | |
633 | rtx addr = expand_expr (address, NULL_RTX, VOIDmode, 0); | |
634 | rtx mem = gen_rtx_MEM (mode, addr); | |
2f3ca9e7 | 635 | |
376e12ab | 636 | for (i = 0; i < DWARF_FRAME_REGISTERS; ++i) |
2f3ca9e7 | 637 | { |
e0e07bd1 | 638 | int offset = DWARF_FRAME_REGNUM (i) * GET_MODE_SIZE (mode); |
d9d5c9de | 639 | int size = GET_MODE_SIZE (reg_raw_mode[i]); |
2f3ca9e7 | 640 | |
c699cee9 JM |
641 | if (offset < 0) |
642 | continue; | |
643 | ||
d9d5c9de BS |
644 | emit_move_insn (change_address (mem, mode, |
645 | plus_constant (addr, offset)), | |
646 | GEN_INT (size)); | |
2f3ca9e7 | 647 | } |
2f3ca9e7 JM |
648 | } |
649 | ||
3f76745e | 650 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 651 | |
d560ee52 | 652 | static const char * |
3f76745e JM |
653 | dwarf_cfi_name (cfi_opc) |
654 | register unsigned cfi_opc; | |
655 | { | |
656 | switch (cfi_opc) | |
657 | { | |
658 | case DW_CFA_advance_loc: | |
659 | return "DW_CFA_advance_loc"; | |
660 | case DW_CFA_offset: | |
661 | return "DW_CFA_offset"; | |
662 | case DW_CFA_restore: | |
663 | return "DW_CFA_restore"; | |
664 | case DW_CFA_nop: | |
665 | return "DW_CFA_nop"; | |
666 | case DW_CFA_set_loc: | |
667 | return "DW_CFA_set_loc"; | |
668 | case DW_CFA_advance_loc1: | |
669 | return "DW_CFA_advance_loc1"; | |
670 | case DW_CFA_advance_loc2: | |
671 | return "DW_CFA_advance_loc2"; | |
672 | case DW_CFA_advance_loc4: | |
673 | return "DW_CFA_advance_loc4"; | |
674 | case DW_CFA_offset_extended: | |
675 | return "DW_CFA_offset_extended"; | |
676 | case DW_CFA_restore_extended: | |
677 | return "DW_CFA_restore_extended"; | |
678 | case DW_CFA_undefined: | |
679 | return "DW_CFA_undefined"; | |
680 | case DW_CFA_same_value: | |
681 | return "DW_CFA_same_value"; | |
682 | case DW_CFA_register: | |
683 | return "DW_CFA_register"; | |
684 | case DW_CFA_remember_state: | |
685 | return "DW_CFA_remember_state"; | |
686 | case DW_CFA_restore_state: | |
687 | return "DW_CFA_restore_state"; | |
688 | case DW_CFA_def_cfa: | |
689 | return "DW_CFA_def_cfa"; | |
690 | case DW_CFA_def_cfa_register: | |
691 | return "DW_CFA_def_cfa_register"; | |
692 | case DW_CFA_def_cfa_offset: | |
693 | return "DW_CFA_def_cfa_offset"; | |
7d9d8943 AM |
694 | case DW_CFA_def_cfa_expression: |
695 | return "DW_CFA_def_cfa_expression"; | |
c53aa195 | 696 | |
3f76745e JM |
697 | /* SGI/MIPS specific */ |
698 | case DW_CFA_MIPS_advance_loc8: | |
699 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
700 | |
701 | /* GNU extensions */ | |
702 | case DW_CFA_GNU_window_save: | |
703 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
704 | case DW_CFA_GNU_args_size: |
705 | return "DW_CFA_GNU_args_size"; | |
3f388b42 GK |
706 | case DW_CFA_GNU_negative_offset_extended: |
707 | return "DW_CFA_GNU_negative_offset_extended"; | |
c53aa195 | 708 | |
3f76745e JM |
709 | default: |
710 | return "DW_CFA_<unknown>"; | |
711 | } | |
712 | } | |
a3f97cbb | 713 | |
3f76745e | 714 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 715 | |
3f76745e JM |
716 | static inline dw_cfi_ref |
717 | new_cfi () | |
718 | { | |
719 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 720 | |
3f76745e JM |
721 | cfi->dw_cfi_next = NULL; |
722 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
723 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 724 | |
3f76745e JM |
725 | return cfi; |
726 | } | |
a3f97cbb | 727 | |
3f76745e | 728 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 729 | |
3f76745e JM |
730 | static inline void |
731 | add_cfi (list_head, cfi) | |
732 | register dw_cfi_ref *list_head; | |
733 | register dw_cfi_ref cfi; | |
734 | { | |
735 | register dw_cfi_ref *p; | |
a3f97cbb | 736 | |
3f76745e JM |
737 | /* Find the end of the chain. */ |
738 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
739 | ; | |
740 | ||
741 | *p = cfi; | |
a3f97cbb JW |
742 | } |
743 | ||
3f76745e | 744 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 745 | |
c53aa195 | 746 | char * |
3f76745e | 747 | dwarf2out_cfi_label () |
a3f97cbb | 748 | { |
3f76745e JM |
749 | static char label[20]; |
750 | static unsigned long label_num = 0; | |
556273e0 | 751 | |
3f76745e JM |
752 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); |
753 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
754 | ||
755 | return label; | |
a3f97cbb JW |
756 | } |
757 | ||
3f76745e JM |
758 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
759 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 760 | |
3f76745e JM |
761 | static void |
762 | add_fde_cfi (label, cfi) | |
d3e3972c | 763 | register const char *label; |
3f76745e | 764 | register dw_cfi_ref cfi; |
a3f97cbb | 765 | { |
3f76745e JM |
766 | if (label) |
767 | { | |
768 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 769 | |
3f76745e JM |
770 | if (*label == 0) |
771 | label = dwarf2out_cfi_label (); | |
71dfc51f | 772 | |
3f76745e JM |
773 | if (fde->dw_fde_current_label == NULL |
774 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
775 | { | |
776 | register dw_cfi_ref xcfi; | |
a3f97cbb | 777 | |
3f76745e | 778 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 779 | |
3f76745e JM |
780 | /* Set the location counter to the new label. */ |
781 | xcfi = new_cfi (); | |
782 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
783 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
784 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
785 | } | |
71dfc51f | 786 | |
3f76745e JM |
787 | add_cfi (&fde->dw_fde_cfi, cfi); |
788 | } | |
789 | ||
790 | else | |
791 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
792 | } |
793 | ||
3f76745e | 794 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 795 | |
3f76745e | 796 | static inline void |
7d9d8943 | 797 | lookup_cfa_1 (cfi, loc) |
3f76745e | 798 | register dw_cfi_ref cfi; |
7d9d8943 | 799 | register dw_cfa_location *loc; |
a3f97cbb | 800 | { |
3f76745e JM |
801 | switch (cfi->dw_cfi_opc) |
802 | { | |
803 | case DW_CFA_def_cfa_offset: | |
7d9d8943 | 804 | loc->offset = cfi->dw_cfi_oprnd1.dw_cfi_offset; |
3f76745e JM |
805 | break; |
806 | case DW_CFA_def_cfa_register: | |
7d9d8943 | 807 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
3f76745e JM |
808 | break; |
809 | case DW_CFA_def_cfa: | |
7d9d8943 AM |
810 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
811 | loc->offset = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
812 | break; | |
813 | case DW_CFA_def_cfa_expression: | |
814 | get_cfa_from_loc_descr (loc, cfi->dw_cfi_oprnd1.dw_cfi_loc); | |
3f76745e | 815 | break; |
e9a25f70 JL |
816 | default: |
817 | break; | |
3f76745e | 818 | } |
a3f97cbb JW |
819 | } |
820 | ||
3f76745e | 821 | /* Find the previous value for the CFA. */ |
71dfc51f | 822 | |
3f76745e | 823 | static void |
7d9d8943 AM |
824 | lookup_cfa (loc) |
825 | register dw_cfa_location *loc; | |
a3f97cbb | 826 | { |
3f76745e JM |
827 | register dw_cfi_ref cfi; |
828 | ||
7d9d8943 AM |
829 | loc->reg = (unsigned long) -1; |
830 | loc->offset = 0; | |
831 | loc->indirect = 0; | |
832 | loc->base_offset = 0; | |
3f76745e JM |
833 | |
834 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
7d9d8943 | 835 | lookup_cfa_1 (cfi, loc); |
3f76745e JM |
836 | |
837 | if (fde_table_in_use) | |
a3f97cbb | 838 | { |
3f76745e JM |
839 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
840 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
7d9d8943 | 841 | lookup_cfa_1 (cfi, loc); |
a3f97cbb JW |
842 | } |
843 | } | |
844 | ||
3f76745e | 845 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
7d9d8943 | 846 | dw_cfa_location cfa; |
71dfc51f | 847 | |
3f76745e JM |
848 | /* The register used for saving registers to the stack, and its offset |
849 | from the CFA. */ | |
7d9d8943 | 850 | dw_cfa_location cfa_store; |
3f76745e | 851 | |
0021b564 JM |
852 | /* The running total of the size of arguments pushed onto the stack. */ |
853 | static long args_size; | |
854 | ||
b57d9225 JM |
855 | /* The last args_size we actually output. */ |
856 | static long old_args_size; | |
857 | ||
3f76745e JM |
858 | /* Entry point to update the canonical frame address (CFA). |
859 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
860 | calculated from REG+OFFSET. */ | |
861 | ||
862 | void | |
863 | dwarf2out_def_cfa (label, reg, offset) | |
d3e3972c | 864 | register const char *label; |
7d9d8943 AM |
865 | unsigned reg; |
866 | long offset; | |
867 | { | |
868 | dw_cfa_location loc; | |
869 | loc.indirect = 0; | |
870 | loc.base_offset = 0; | |
871 | loc.reg = reg; | |
872 | loc.offset = offset; | |
873 | def_cfa_1 (label, &loc); | |
874 | } | |
875 | ||
770ca8c6 | 876 | /* This routine does the actual work. The CFA is now calculated from |
7d9d8943 AM |
877 | the dw_cfa_location structure. */ |
878 | static void | |
879 | def_cfa_1 (label, loc_p) | |
880 | register const char *label; | |
881 | dw_cfa_location *loc_p; | |
a3f97cbb | 882 | { |
3f76745e | 883 | register dw_cfi_ref cfi; |
7d9d8943 | 884 | dw_cfa_location old_cfa, loc; |
3f76745e | 885 | |
7d9d8943 AM |
886 | cfa = *loc_p; |
887 | loc = *loc_p; | |
5bef9b1f | 888 | |
7d9d8943 AM |
889 | if (cfa_store.reg == loc.reg && loc.indirect == 0) |
890 | cfa_store.offset = loc.offset; | |
3f76745e | 891 | |
7d9d8943 AM |
892 | loc.reg = DWARF_FRAME_REGNUM (loc.reg); |
893 | lookup_cfa (&old_cfa); | |
894 | ||
895 | if (loc.reg == old_cfa.reg && loc.offset == old_cfa.offset && | |
896 | loc.indirect == old_cfa.indirect) | |
897 | { | |
e09bbb25 JM |
898 | if (loc.indirect == 0 |
899 | || loc.base_offset == old_cfa.base_offset) | |
770ca8c6 JO |
900 | /* Nothing changed so no need to issue any call frame |
901 | instructions. */ | |
7d9d8943 | 902 | return; |
7d9d8943 | 903 | } |
3f76745e JM |
904 | |
905 | cfi = new_cfi (); | |
906 | ||
e09bbb25 | 907 | if (loc.reg == old_cfa.reg && !loc.indirect) |
a3f97cbb | 908 | { |
770ca8c6 JO |
909 | /* Construct a "DW_CFA_def_cfa_offset <offset>" instruction, |
910 | indicating the CFA register did not change but the offset | |
911 | did. */ | |
3f76745e | 912 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
7d9d8943 | 913 | cfi->dw_cfi_oprnd1.dw_cfi_offset = loc.offset; |
3f76745e | 914 | } |
a3f97cbb | 915 | |
3f76745e | 916 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
7d9d8943 | 917 | else if (loc.offset == old_cfa.offset && old_cfa.reg != (unsigned long) -1 |
e09bbb25 | 918 | && !loc.indirect) |
3f76745e | 919 | { |
770ca8c6 JO |
920 | /* Construct a "DW_CFA_def_cfa_register <register>" instruction, |
921 | indicating the CFA register has changed to <register> but the | |
922 | offset has not changed. */ | |
3f76745e | 923 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; |
7d9d8943 | 924 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
3f76745e JM |
925 | } |
926 | #endif | |
a3f97cbb | 927 | |
7d9d8943 | 928 | else if (loc.indirect == 0) |
3f76745e | 929 | { |
770ca8c6 JO |
930 | /* Construct a "DW_CFA_def_cfa <register> <offset>" instruction, |
931 | indicating the CFA register has changed to <register> with | |
932 | the specified offset. */ | |
3f76745e | 933 | cfi->dw_cfi_opc = DW_CFA_def_cfa; |
7d9d8943 AM |
934 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
935 | cfi->dw_cfi_oprnd2.dw_cfi_offset = loc.offset; | |
936 | } | |
937 | else | |
938 | { | |
770ca8c6 JO |
939 | /* Construct a DW_CFA_def_cfa_expression instruction to |
940 | calculate the CFA using a full location expression since no | |
941 | register-offset pair is available. */ | |
556273e0 | 942 | struct dw_loc_descr_struct *loc_list; |
7d9d8943 AM |
943 | cfi->dw_cfi_opc = DW_CFA_def_cfa_expression; |
944 | loc_list = build_cfa_loc (&loc); | |
945 | cfi->dw_cfi_oprnd1.dw_cfi_loc = loc_list; | |
a3f97cbb | 946 | } |
3f76745e JM |
947 | |
948 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
949 | } |
950 | ||
3f76745e JM |
951 | /* Add the CFI for saving a register. REG is the CFA column number. |
952 | LABEL is passed to add_fde_cfi. | |
953 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
954 | otherwise it is saved in SREG. */ | |
71dfc51f | 955 | |
3f76745e JM |
956 | static void |
957 | reg_save (label, reg, sreg, offset) | |
d3e3972c | 958 | register const char *label; |
3f76745e JM |
959 | register unsigned reg; |
960 | register unsigned sreg; | |
961 | register long offset; | |
a3f97cbb | 962 | { |
3f76745e JM |
963 | register dw_cfi_ref cfi = new_cfi (); |
964 | ||
965 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
966 | ||
85066503 MH |
967 | /* The following comparison is correct. -1 is used to indicate that |
968 | the value isn't a register number. */ | |
969 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 970 | { |
3f76745e JM |
971 | if (reg & ~0x3f) |
972 | /* The register number won't fit in 6 bits, so we have to use | |
973 | the long form. */ | |
974 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
975 | else | |
976 | cfi->dw_cfi_opc = DW_CFA_offset; | |
977 | ||
27c35f4b HPN |
978 | #ifdef ENABLE_CHECKING |
979 | { | |
980 | /* If we get an offset that is not a multiple of | |
981 | DWARF_CIE_DATA_ALIGNMENT, there is either a bug in the | |
982 | definition of DWARF_CIE_DATA_ALIGNMENT, or a bug in the machine | |
983 | description. */ | |
984 | long check_offset = offset / DWARF_CIE_DATA_ALIGNMENT; | |
985 | ||
986 | if (check_offset * DWARF_CIE_DATA_ALIGNMENT != offset) | |
987 | abort (); | |
988 | } | |
989 | #endif | |
3f76745e | 990 | offset /= DWARF_CIE_DATA_ALIGNMENT; |
3a88cbd1 | 991 | if (offset < 0) |
3f388b42 GK |
992 | { |
993 | cfi->dw_cfi_opc = DW_CFA_GNU_negative_offset_extended; | |
994 | offset = -offset; | |
995 | } | |
3f76745e JM |
996 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
997 | } | |
2c849145 JM |
998 | else if (sreg == reg) |
999 | /* We could emit a DW_CFA_same_value in this case, but don't bother. */ | |
1000 | return; | |
3f76745e JM |
1001 | else |
1002 | { | |
1003 | cfi->dw_cfi_opc = DW_CFA_register; | |
1004 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
1005 | } | |
1006 | ||
1007 | add_fde_cfi (label, cfi); | |
1008 | } | |
1009 | ||
c53aa195 JM |
1010 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
1011 | This CFI tells the unwinder that it needs to restore the window registers | |
1012 | from the previous frame's window save area. | |
556273e0 | 1013 | |
c53aa195 JM |
1014 | ??? Perhaps we should note in the CIE where windows are saved (instead of |
1015 | assuming 0(cfa)) and what registers are in the window. */ | |
1016 | ||
1017 | void | |
1018 | dwarf2out_window_save (label) | |
d3e3972c | 1019 | register const char *label; |
c53aa195 JM |
1020 | { |
1021 | register dw_cfi_ref cfi = new_cfi (); | |
1022 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
1023 | add_fde_cfi (label, cfi); | |
1024 | } | |
1025 | ||
0021b564 JM |
1026 | /* Add a CFI to update the running total of the size of arguments |
1027 | pushed onto the stack. */ | |
1028 | ||
1029 | void | |
1030 | dwarf2out_args_size (label, size) | |
d3e3972c | 1031 | const char *label; |
0021b564 JM |
1032 | long size; |
1033 | { | |
b57d9225 JM |
1034 | register dw_cfi_ref cfi; |
1035 | ||
1036 | if (size == old_args_size) | |
1037 | return; | |
1038 | old_args_size = size; | |
1039 | ||
1040 | cfi = new_cfi (); | |
0021b564 JM |
1041 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
1042 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
1043 | add_fde_cfi (label, cfi); | |
1044 | } | |
1045 | ||
c53aa195 JM |
1046 | /* Entry point for saving a register to the stack. REG is the GCC register |
1047 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
1048 | |
1049 | void | |
1050 | dwarf2out_reg_save (label, reg, offset) | |
d3e3972c | 1051 | register const char *label; |
3f76745e JM |
1052 | register unsigned reg; |
1053 | register long offset; | |
1054 | { | |
1055 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
1056 | } | |
1057 | ||
c53aa195 JM |
1058 | /* Entry point for saving the return address in the stack. |
1059 | LABEL and OFFSET are passed to reg_save. */ | |
1060 | ||
1061 | void | |
1062 | dwarf2out_return_save (label, offset) | |
d3e3972c | 1063 | register const char *label; |
c53aa195 JM |
1064 | register long offset; |
1065 | { | |
1066 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
1067 | } | |
1068 | ||
1069 | /* Entry point for saving the return address in a register. | |
1070 | LABEL and SREG are passed to reg_save. */ | |
1071 | ||
1072 | void | |
1073 | dwarf2out_return_reg (label, sreg) | |
d3e3972c | 1074 | register const char *label; |
c53aa195 JM |
1075 | register unsigned sreg; |
1076 | { | |
1077 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
1078 | } | |
1079 | ||
3f76745e JM |
1080 | /* Record the initial position of the return address. RTL is |
1081 | INCOMING_RETURN_ADDR_RTX. */ | |
1082 | ||
1083 | static void | |
1084 | initial_return_save (rtl) | |
1085 | register rtx rtl; | |
1086 | { | |
973838fd | 1087 | unsigned int reg = (unsigned int) -1; |
3f76745e JM |
1088 | long offset = 0; |
1089 | ||
1090 | switch (GET_CODE (rtl)) | |
1091 | { | |
1092 | case REG: | |
1093 | /* RA is in a register. */ | |
2c849145 | 1094 | reg = DWARF_FRAME_REGNUM (REGNO (rtl)); |
3f76745e JM |
1095 | break; |
1096 | case MEM: | |
1097 | /* RA is on the stack. */ | |
1098 | rtl = XEXP (rtl, 0); | |
1099 | switch (GET_CODE (rtl)) | |
1100 | { | |
1101 | case REG: | |
3a88cbd1 JL |
1102 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
1103 | abort (); | |
3f76745e JM |
1104 | offset = 0; |
1105 | break; | |
1106 | case PLUS: | |
3a88cbd1 JL |
1107 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1108 | abort (); | |
3f76745e JM |
1109 | offset = INTVAL (XEXP (rtl, 1)); |
1110 | break; | |
1111 | case MINUS: | |
3a88cbd1 JL |
1112 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1113 | abort (); | |
3f76745e JM |
1114 | offset = -INTVAL (XEXP (rtl, 1)); |
1115 | break; | |
1116 | default: | |
1117 | abort (); | |
1118 | } | |
1119 | break; | |
c53aa195 JM |
1120 | case PLUS: |
1121 | /* The return address is at some offset from any value we can | |
1122 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1123 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1124 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1125 | abort (); | |
c53aa195 JM |
1126 | initial_return_save (XEXP (rtl, 0)); |
1127 | return; | |
a3f97cbb | 1128 | default: |
3f76745e | 1129 | abort (); |
a3f97cbb | 1130 | } |
3f76745e | 1131 | |
7d9d8943 | 1132 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa.offset); |
a3f97cbb JW |
1133 | } |
1134 | ||
1ba5ae8f AH |
1135 | /* Given a SET, calculate the amount of stack adjustment it |
1136 | contains. */ | |
1137 | ||
5e640c56 AH |
1138 | static long |
1139 | stack_adjust_offset (pattern) | |
1ba5ae8f AH |
1140 | rtx pattern; |
1141 | { | |
1142 | rtx src = SET_SRC (pattern); | |
1143 | rtx dest = SET_DEST (pattern); | |
1144 | long offset = 0; | |
1145 | enum rtx_code code; | |
1146 | ||
1147 | if (dest == stack_pointer_rtx) | |
1148 | { | |
1149 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1150 | code = GET_CODE (src); | |
1151 | if (! (code == PLUS || code == MINUS) | |
1152 | || XEXP (src, 0) != stack_pointer_rtx | |
1153 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1154 | return 0; | |
1155 | ||
1156 | offset = INTVAL (XEXP (src, 1)); | |
1157 | } | |
1158 | else if (GET_CODE (dest) == MEM) | |
1159 | { | |
1160 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1161 | src = XEXP (dest, 0); | |
1162 | code = GET_CODE (src); | |
1163 | ||
e2134eea JH |
1164 | if (! (code == PRE_DEC || code == PRE_INC |
1165 | || code == PRE_MODIFY) | |
1ba5ae8f AH |
1166 | || XEXP (src, 0) != stack_pointer_rtx) |
1167 | return 0; | |
1168 | ||
e2134eea JH |
1169 | if (code == PRE_MODIFY) |
1170 | { | |
1171 | rtx val = XEXP (XEXP (src, 1), 1); | |
1172 | /* We handle only adjustments by constant amount. */ | |
1173 | if (GET_CODE (XEXP (src, 1)) != PLUS || | |
1174 | GET_CODE (val) != CONST_INT) | |
1175 | abort(); | |
1176 | offset = -INTVAL (val); | |
1177 | } | |
1178 | else offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1ba5ae8f AH |
1179 | } |
1180 | else | |
1181 | return 0; | |
1182 | ||
1183 | if (code == PLUS || code == PRE_INC) | |
1184 | offset = -offset; | |
1185 | ||
1186 | return offset; | |
1187 | } | |
1188 | ||
0021b564 JM |
1189 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1190 | make a note of it if it does. EH uses this information to find out how | |
1191 | much extra space it needs to pop off the stack. */ | |
1192 | ||
1193 | static void | |
1194 | dwarf2out_stack_adjust (insn) | |
1195 | rtx insn; | |
1196 | { | |
0021b564 | 1197 | long offset; |
d3e3972c | 1198 | const char *label; |
0021b564 | 1199 | |
b57d9225 JM |
1200 | if (! asynchronous_exceptions && GET_CODE (insn) == CALL_INSN) |
1201 | { | |
1202 | /* Extract the size of the args from the CALL rtx itself. */ | |
1203 | ||
1204 | insn = PATTERN (insn); | |
1205 | if (GET_CODE (insn) == PARALLEL) | |
1206 | insn = XVECEXP (insn, 0, 0); | |
1207 | if (GET_CODE (insn) == SET) | |
1208 | insn = SET_SRC (insn); | |
3db35af4 MM |
1209 | if (GET_CODE (insn) != CALL) |
1210 | abort (); | |
b57d9225 JM |
1211 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); |
1212 | return; | |
1213 | } | |
1214 | ||
1215 | /* If only calls can throw, and we have a frame pointer, | |
1216 | save up adjustments until we see the CALL_INSN. */ | |
1217 | else if (! asynchronous_exceptions | |
7d9d8943 | 1218 | && cfa.reg != STACK_POINTER_REGNUM) |
b57d9225 JM |
1219 | return; |
1220 | ||
6020d360 | 1221 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1222 | { |
6020d360 JM |
1223 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1224 | the compiler will have already emitted a stack adjustment, but | |
1225 | doesn't bother for calls to noreturn functions. */ | |
1226 | #ifdef STACK_GROWS_DOWNWARD | |
1227 | offset = -args_size; | |
1228 | #else | |
1229 | offset = args_size; | |
1230 | #endif | |
0021b564 | 1231 | } |
6020d360 | 1232 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1233 | { |
1ba5ae8f AH |
1234 | offset = stack_adjust_offset (PATTERN (insn)); |
1235 | } | |
1236 | else if (GET_CODE (PATTERN (insn)) == PARALLEL | |
1237 | || GET_CODE (PATTERN (insn)) == SEQUENCE) | |
1238 | { | |
1239 | /* There may be stack adjustments inside compound insns. Search | |
1240 | for them. */ | |
1241 | int j; | |
0021b564 | 1242 | |
1ba5ae8f AH |
1243 | offset = 0; |
1244 | for (j = XVECLEN (PATTERN (insn), 0) - 1; j >= 0; j--) | |
6020d360 | 1245 | { |
1ba5ae8f AH |
1246 | rtx pattern = XVECEXP (PATTERN (insn), 0, j); |
1247 | if (GET_CODE (pattern) == SET) | |
1248 | offset += stack_adjust_offset (pattern); | |
6020d360 | 1249 | } |
0021b564 JM |
1250 | } |
1251 | else | |
1252 | return; | |
0b34cf1e | 1253 | |
6020d360 JM |
1254 | if (offset == 0) |
1255 | return; | |
1256 | ||
7d9d8943 AM |
1257 | if (cfa.reg == STACK_POINTER_REGNUM) |
1258 | cfa.offset += offset; | |
0021b564 JM |
1259 | |
1260 | #ifndef STACK_GROWS_DOWNWARD | |
1261 | offset = -offset; | |
1262 | #endif | |
1263 | args_size += offset; | |
1264 | if (args_size < 0) | |
1265 | args_size = 0; | |
1266 | ||
1267 | label = dwarf2out_cfi_label (); | |
7d9d8943 | 1268 | def_cfa_1 (label, &cfa); |
0021b564 JM |
1269 | dwarf2out_args_size (label, args_size); |
1270 | } | |
1271 | ||
770ca8c6 JO |
1272 | /* A temporary register holding an integral value used in adjusting SP |
1273 | or setting up the store_reg. The "offset" field holds the integer | |
1274 | value, not an offset. */ | |
1275 | dw_cfa_location cfa_temp; | |
1276 | ||
1277 | /* Record call frame debugging information for an expression EXPR, | |
1278 | which either sets SP or FP (adjusting how we calculate the frame | |
1279 | address) or saves a register to the stack. LABEL indicates the | |
1280 | address of EXPR. | |
1281 | ||
1282 | This function encodes a state machine mapping rtxes to actions on | |
1283 | cfa, cfa_store, and cfa_temp.reg. We describe these rules so | |
1284 | users need not read the source code. | |
1285 | ||
a401107d JO |
1286 | The High-Level Picture |
1287 | ||
1288 | Changes in the register we use to calculate the CFA: Currently we | |
1289 | assume that if you copy the CFA register into another register, we | |
1290 | should take the other one as the new CFA register; this seems to | |
1291 | work pretty well. If it's wrong for some target, it's simple | |
1292 | enough not to set RTX_FRAME_RELATED_P on the insn in question. | |
1293 | ||
1294 | Changes in the register we use for saving registers to the stack: | |
1295 | This is usually SP, but not always. Again, we deduce that if you | |
1296 | copy SP into another register (and SP is not the CFA register), | |
1297 | then the new register is the one we will be using for register | |
1298 | saves. This also seems to work. | |
1299 | ||
1300 | Register saves: There's not much guesswork about this one; if | |
1301 | RTX_FRAME_RELATED_P is set on an insn which modifies memory, it's a | |
1302 | register save, and the register used to calculate the destination | |
1303 | had better be the one we think we're using for this purpose. | |
1304 | ||
1305 | Except: If the register being saved is the CFA register, and the | |
1306 | offset is non-zero, we are saving the CFA, so we assume we have to | |
1307 | use DW_CFA_def_cfa_expression. If the offset is 0, we assume that | |
1308 | the intent is to save the value of SP from the previous frame. | |
1309 | ||
770ca8c6 JO |
1310 | Invariants / Summaries of Rules |
1311 | ||
a401107d JO |
1312 | cfa current rule for calculating the CFA. It usually |
1313 | consists of a register and an offset. | |
770ca8c6 JO |
1314 | cfa_store register used by prologue code to save things to the stack |
1315 | cfa_store.offset is the offset from the value of | |
1316 | cfa_store.reg to the actual CFA | |
1317 | cfa_temp register holding an integral value. cfa_temp.offset | |
1318 | stores the value, which will be used to adjust the | |
1319 | stack pointer. | |
1320 | ||
1321 | Rules 1- 4: Setting a register's value to cfa.reg or an expression | |
1322 | with cfa.reg as the first operand changes the cfa.reg and its | |
1323 | cfa.offset. | |
770ca8c6 JO |
1324 | |
1325 | Rules 6- 9: Set a non-cfa.reg register value to a constant or an | |
1326 | expression yielding a constant. This sets cfa_temp.reg | |
1327 | and cfa_temp.offset. | |
1328 | ||
1329 | Rule 5: Create a new register cfa_store used to save items to the | |
1330 | stack. | |
1331 | ||
a401107d JO |
1332 | Rules 10-13: Save a register to the stack. Define offset as the |
1333 | difference of the original location and cfa_store's | |
1334 | location. | |
770ca8c6 JO |
1335 | |
1336 | The Rules | |
1337 | ||
1338 | "{a,b}" indicates a choice of a xor b. | |
1339 | "<reg>:cfa.reg" indicates that <reg> must equal cfa.reg. | |
1340 | ||
1341 | Rule 1: | |
1342 | (set <reg1> <reg2>:cfa.reg) | |
1343 | effects: cfa.reg = <REG1> | |
1344 | cfa.offset unchanged | |
1345 | ||
1346 | Rule 2: | |
1347 | (set sp ({minus,plus} {sp,fp}:cfa.reg {<const_int>,<reg>:cfa_temp.reg})) | |
1348 | effects: cfa.reg = sp if fp used | |
1349 | cfa.offset += {+/- <const_int>, cfa_temp.offset} if cfa.reg==sp | |
1350 | cfa_store.offset += {+/- <const_int>, cfa_temp.offset} | |
1351 | if cfa_store.reg==sp | |
1352 | ||
1353 | Rule 3: | |
1354 | (set fp ({minus,plus} <reg>:cfa.reg <const_int>)) | |
1355 | effects: cfa.reg = fp | |
1356 | cfa_offset += +/- <const_int> | |
1357 | ||
1358 | Rule 4: | |
1359 | (set <reg1> (plus <reg2>:cfa.reg <const_int>)) | |
1360 | constraints: <reg1> != fp | |
1361 | <reg1> != sp | |
1362 | effects: cfa.reg = <reg1> | |
770ca8c6 JO |
1363 | |
1364 | Rule 5: | |
1365 | (set <reg1> (plus <reg2>:cfa_temp.reg sp:cfa.reg)) | |
1366 | constraints: <reg1> != fp | |
1367 | <reg1> != sp | |
1368 | effects: cfa_store.reg = <reg1> | |
1369 | cfa_store.offset = cfa.offset - cfa_temp.offset | |
1370 | ||
1371 | Rule 6: | |
1372 | (set <reg> <const_int>) | |
1373 | effects: cfa_temp.reg = <reg> | |
1374 | cfa_temp.offset = <const_int> | |
1375 | ||
1376 | Rule 7: | |
1377 | (set <reg1>:cfa_temp.reg (ior <reg2>:cfa_temp.reg <const_int>)) | |
1378 | effects: cfa_temp.reg = <reg1> | |
1379 | cfa_temp.offset |= <const_int> | |
1380 | ||
1381 | Rule 8: | |
1382 | (set <reg> (high <exp>)) | |
1383 | effects: none | |
1384 | ||
1385 | Rule 9: | |
1386 | (set <reg> (lo_sum <exp> <const_int>)) | |
1387 | effects: cfa_temp.reg = <reg> | |
1388 | cfa_temp.offset = <const_int> | |
1389 | ||
1390 | Rule 10: | |
1391 | (set (mem (pre_modify sp:cfa_store (???? <reg1> <const_int>))) <reg2>) | |
1392 | effects: cfa_store.offset -= <const_int> | |
1393 | cfa.offset = cfa_store.offset if cfa.reg == sp | |
1394 | offset = -cfa_store.offset | |
1395 | cfa.reg = sp | |
1396 | cfa.base_offset = offset | |
1397 | ||
1398 | Rule 11: | |
1399 | (set (mem ({pre_inc,pre_dec} sp:cfa_store.reg)) <reg>) | |
1400 | effects: cfa_store.offset += -/+ mode_size(mem) | |
1401 | cfa.offset = cfa_store.offset if cfa.reg == sp | |
1402 | offset = -cfa_store.offset | |
1403 | cfa.reg = sp | |
1404 | cfa.base_offset = offset | |
1405 | ||
1406 | Rule 12: | |
1407 | (set (mem ({minus,plus} <reg1>:cfa_store <const_int>)) <reg2>) | |
1408 | effects: cfa_store.offset += -/+ <const_int> | |
1409 | offset = -cfa_store.offset | |
1410 | cfa.reg = <reg1 | |
1411 | cfa.base_offset = offset | |
1412 | ||
1413 | Rule 13: | |
1414 | (set (mem <reg1>:cfa_store) <reg2>) | |
1415 | effects: offset = -cfa_store.offset | |
1416 | cfa.reg = <reg1> | |
1417 | cfa.base_offset = offset */ | |
b664de3a AM |
1418 | |
1419 | static void | |
1420 | dwarf2out_frame_debug_expr (expr, label) | |
1421 | rtx expr; | |
d3e3972c | 1422 | const char *label; |
b664de3a AM |
1423 | { |
1424 | rtx src, dest; | |
1425 | long offset; | |
556273e0 KH |
1426 | |
1427 | /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of | |
1428 | the PARALLEL independently. The first element is always processed if | |
770ca8c6 | 1429 | it is a SET. This is for backward compatibility. Other elements |
556273e0 KH |
1430 | are processed only if they are SETs and the RTX_FRAME_RELATED_P |
1431 | flag is set in them. */ | |
b664de3a | 1432 | |
79d13342 NC |
1433 | if (GET_CODE (expr) == PARALLEL |
1434 | || GET_CODE (expr) == SEQUENCE) | |
556273e0 | 1435 | { |
b664de3a AM |
1436 | int par_index; |
1437 | int limit = XVECLEN (expr, 0); | |
1438 | ||
1439 | for (par_index = 0; par_index < limit; par_index++) | |
556273e0 KH |
1440 | { |
1441 | rtx x = XVECEXP (expr, 0, par_index); | |
1442 | ||
1443 | if (GET_CODE (x) == SET && | |
b664de3a | 1444 | (RTX_FRAME_RELATED_P (x) || par_index == 0)) |
2618f955 | 1445 | dwarf2out_frame_debug_expr (x, label); |
556273e0 | 1446 | } |
b664de3a AM |
1447 | return; |
1448 | } | |
556273e0 | 1449 | |
b664de3a AM |
1450 | if (GET_CODE (expr) != SET) |
1451 | abort (); | |
1452 | ||
1453 | src = SET_SRC (expr); | |
1454 | dest = SET_DEST (expr); | |
1455 | ||
1456 | switch (GET_CODE (dest)) | |
1457 | { | |
1458 | case REG: | |
770ca8c6 | 1459 | /* Rule 1 */ |
b664de3a AM |
1460 | /* Update the CFA rule wrt SP or FP. Make sure src is |
1461 | relative to the current CFA register. */ | |
1462 | switch (GET_CODE (src)) | |
556273e0 KH |
1463 | { |
1464 | /* Setting FP from SP. */ | |
1465 | case REG: | |
1466 | if (cfa.reg == (unsigned) REGNO (src)) | |
1467 | /* OK. */ | |
1468 | ; | |
626d1efd | 1469 | else |
556273e0 | 1470 | abort (); |
2c849145 JM |
1471 | |
1472 | /* We used to require that dest be either SP or FP, but the | |
1473 | ARM copies SP to a temporary register, and from there to | |
1474 | FP. So we just rely on the backends to only set | |
1475 | RTX_FRAME_RELATED_P on appropriate insns. */ | |
556273e0 KH |
1476 | cfa.reg = REGNO (dest); |
1477 | break; | |
b664de3a | 1478 | |
556273e0 KH |
1479 | case PLUS: |
1480 | case MINUS: | |
1481 | if (dest == stack_pointer_rtx) | |
1482 | { | |
770ca8c6 | 1483 | /* Rule 2 */ |
2618f955 MM |
1484 | /* Adjusting SP. */ |
1485 | switch (GET_CODE (XEXP (src, 1))) | |
1486 | { | |
1487 | case CONST_INT: | |
1488 | offset = INTVAL (XEXP (src, 1)); | |
1489 | break; | |
1490 | case REG: | |
770ca8c6 | 1491 | if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp.reg) |
2618f955 | 1492 | abort (); |
770ca8c6 | 1493 | offset = cfa_temp.offset; |
2618f955 MM |
1494 | break; |
1495 | default: | |
1496 | abort (); | |
1497 | } | |
1498 | ||
1499 | if (XEXP (src, 0) == hard_frame_pointer_rtx) | |
1500 | { | |
1501 | /* Restoring SP from FP in the epilogue. */ | |
7d9d8943 | 1502 | if (cfa.reg != (unsigned) HARD_FRAME_POINTER_REGNUM) |
2618f955 | 1503 | abort (); |
7d9d8943 | 1504 | cfa.reg = STACK_POINTER_REGNUM; |
2618f955 MM |
1505 | } |
1506 | else if (XEXP (src, 0) != stack_pointer_rtx) | |
1507 | abort (); | |
1508 | ||
1509 | if (GET_CODE (src) == PLUS) | |
1510 | offset = -offset; | |
7d9d8943 AM |
1511 | if (cfa.reg == STACK_POINTER_REGNUM) |
1512 | cfa.offset += offset; | |
1513 | if (cfa_store.reg == STACK_POINTER_REGNUM) | |
1514 | cfa_store.offset += offset; | |
556273e0 KH |
1515 | } |
1516 | else if (dest == hard_frame_pointer_rtx) | |
1517 | { | |
770ca8c6 | 1518 | /* Rule 3 */ |
2618f955 MM |
1519 | /* Either setting the FP from an offset of the SP, |
1520 | or adjusting the FP */ | |
2c849145 | 1521 | if (! frame_pointer_needed) |
2618f955 MM |
1522 | abort (); |
1523 | ||
2c849145 | 1524 | if (GET_CODE (XEXP (src, 0)) == REG |
7d9d8943 | 1525 | && (unsigned) REGNO (XEXP (src, 0)) == cfa.reg |
2618f955 MM |
1526 | && GET_CODE (XEXP (src, 1)) == CONST_INT) |
1527 | { | |
2618f955 MM |
1528 | offset = INTVAL (XEXP (src, 1)); |
1529 | if (GET_CODE (src) == PLUS) | |
1530 | offset = -offset; | |
7d9d8943 AM |
1531 | cfa.offset += offset; |
1532 | cfa.reg = HARD_FRAME_POINTER_REGNUM; | |
2618f955 | 1533 | } |
556273e0 KH |
1534 | else |
1535 | abort (); | |
1536 | } | |
1537 | else | |
1538 | { | |
b53ef1a2 | 1539 | if (GET_CODE (src) != PLUS) |
2618f955 | 1540 | abort (); |
b53ef1a2 | 1541 | |
770ca8c6 | 1542 | /* Rule 4 */ |
b53ef1a2 NC |
1543 | if (GET_CODE (XEXP (src, 0)) == REG |
1544 | && REGNO (XEXP (src, 0)) == cfa.reg | |
1545 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
34ce3d7b JM |
1546 | { |
1547 | /* Setting a temporary CFA register that will be copied | |
1548 | into the FP later on. */ | |
1549 | offset = INTVAL (XEXP (src, 1)); | |
1550 | if (GET_CODE (src) == PLUS) | |
1551 | offset = -offset; | |
1552 | cfa.offset += offset; | |
1553 | cfa.reg = REGNO (dest); | |
1554 | } | |
770ca8c6 | 1555 | /* Rule 5 */ |
b53ef1a2 NC |
1556 | else |
1557 | { | |
00a42e21 JM |
1558 | /* Setting a scratch register that we will use instead |
1559 | of SP for saving registers to the stack. */ | |
b53ef1a2 NC |
1560 | if (XEXP (src, 1) != stack_pointer_rtx) |
1561 | abort (); | |
1562 | if (GET_CODE (XEXP (src, 0)) != REG | |
770ca8c6 | 1563 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp.reg) |
b53ef1a2 NC |
1564 | abort (); |
1565 | if (cfa.reg != STACK_POINTER_REGNUM) | |
1566 | abort (); | |
1567 | cfa_store.reg = REGNO (dest); | |
770ca8c6 | 1568 | cfa_store.offset = cfa.offset - cfa_temp.offset; |
b53ef1a2 | 1569 | } |
556273e0 KH |
1570 | } |
1571 | break; | |
b664de3a | 1572 | |
770ca8c6 | 1573 | /* Rule 6 */ |
556273e0 | 1574 | case CONST_INT: |
770ca8c6 JO |
1575 | cfa_temp.reg = REGNO (dest); |
1576 | cfa_temp.offset = INTVAL (src); | |
556273e0 | 1577 | break; |
b664de3a | 1578 | |
770ca8c6 | 1579 | /* Rule 7 */ |
556273e0 KH |
1580 | case IOR: |
1581 | if (GET_CODE (XEXP (src, 0)) != REG | |
770ca8c6 | 1582 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp.reg |
2618f955 | 1583 | || GET_CODE (XEXP (src, 1)) != CONST_INT) |
556273e0 | 1584 | abort (); |
770ca8c6 JO |
1585 | if ((unsigned) REGNO (dest) != cfa_temp.reg) |
1586 | cfa_temp.reg = REGNO (dest); | |
1587 | cfa_temp.offset |= INTVAL (XEXP (src, 1)); | |
556273e0 | 1588 | break; |
b664de3a | 1589 | |
556273e0 KH |
1590 | default: |
1591 | abort (); | |
1592 | } | |
7d9d8943 | 1593 | def_cfa_1 (label, &cfa); |
2618f955 | 1594 | break; |
b664de3a | 1595 | |
ab577d8a MM |
1596 | /* Skip over HIGH, assuming it will be followed by a LO_SUM, which |
1597 | will fill in all of the bits. */ | |
770ca8c6 | 1598 | /* Rule 8 */ |
ab577d8a MM |
1599 | case HIGH: |
1600 | break; | |
1601 | ||
770ca8c6 | 1602 | /* Rule 9 */ |
ab577d8a | 1603 | case LO_SUM: |
770ca8c6 JO |
1604 | if (GET_CODE (XEXP (src, 1)) != CONST_INT) |
1605 | abort (); | |
1606 | cfa_temp.reg = REGNO (dest); | |
1607 | cfa_temp.offset = INTVAL (XEXP (src, 1)); | |
ab577d8a MM |
1608 | break; |
1609 | ||
2618f955 | 1610 | case MEM: |
2618f955 MM |
1611 | if (GET_CODE (src) != REG) |
1612 | abort (); | |
7d9d8943 | 1613 | |
7d9d8943 AM |
1614 | /* Saving a register to the stack. Make sure dest is relative to the |
1615 | CFA register. */ | |
2618f955 MM |
1616 | switch (GET_CODE (XEXP (dest, 0))) |
1617 | { | |
770ca8c6 | 1618 | /* Rule 10 */ |
2618f955 | 1619 | /* With a push. */ |
e2134eea JH |
1620 | case PRE_MODIFY: |
1621 | /* We can't handle variable size modifications. */ | |
1622 | if (GET_CODE (XEXP (XEXP (XEXP (dest, 0), 1), 1)) != CONST_INT) | |
1623 | abort(); | |
1624 | offset = -INTVAL (XEXP (XEXP (XEXP (dest, 0), 1), 1)); | |
1625 | ||
1626 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM | |
1627 | || cfa_store.reg != STACK_POINTER_REGNUM) | |
1628 | abort (); | |
1629 | cfa_store.offset += offset; | |
1630 | if (cfa.reg == STACK_POINTER_REGNUM) | |
1631 | cfa.offset = cfa_store.offset; | |
1632 | ||
1633 | offset = -cfa_store.offset; | |
1634 | break; | |
770ca8c6 | 1635 | /* Rule 11 */ |
2618f955 MM |
1636 | case PRE_INC: |
1637 | case PRE_DEC: | |
1638 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1639 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) | |
1640 | offset = -offset; | |
b664de3a | 1641 | |
2618f955 | 1642 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
7d9d8943 | 1643 | || cfa_store.reg != STACK_POINTER_REGNUM) |
2618f955 | 1644 | abort (); |
7d9d8943 AM |
1645 | cfa_store.offset += offset; |
1646 | if (cfa.reg == STACK_POINTER_REGNUM) | |
1647 | cfa.offset = cfa_store.offset; | |
b664de3a | 1648 | |
7d9d8943 | 1649 | offset = -cfa_store.offset; |
2618f955 | 1650 | break; |
b664de3a | 1651 | |
770ca8c6 | 1652 | /* Rule 12 */ |
2618f955 MM |
1653 | /* With an offset. */ |
1654 | case PLUS: | |
1655 | case MINUS: | |
770ca8c6 JO |
1656 | if (GET_CODE (XEXP (XEXP (dest, 0), 1)) != CONST_INT) |
1657 | abort (); | |
2618f955 MM |
1658 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); |
1659 | if (GET_CODE (XEXP (dest, 0)) == MINUS) | |
1660 | offset = -offset; | |
b664de3a | 1661 | |
7d9d8943 | 1662 | if (cfa_store.reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) |
2618f955 | 1663 | abort (); |
7d9d8943 | 1664 | offset -= cfa_store.offset; |
2618f955 MM |
1665 | break; |
1666 | ||
770ca8c6 | 1667 | /* Rule 13 */ |
2618f955 MM |
1668 | /* Without an offset. */ |
1669 | case REG: | |
7d9d8943 | 1670 | if (cfa_store.reg != (unsigned) REGNO (XEXP (dest, 0))) |
556273e0 | 1671 | abort (); |
7d9d8943 | 1672 | offset = -cfa_store.offset; |
2618f955 MM |
1673 | break; |
1674 | ||
1675 | default: | |
1676 | abort (); | |
1677 | } | |
e09bbb25 | 1678 | |
556273e0 | 1679 | if (REGNO (src) != STACK_POINTER_REGNUM |
e09bbb25 JM |
1680 | && REGNO (src) != HARD_FRAME_POINTER_REGNUM |
1681 | && (unsigned) REGNO (src) == cfa.reg) | |
1682 | { | |
1683 | /* We're storing the current CFA reg into the stack. */ | |
1684 | ||
1685 | if (cfa.offset == 0) | |
1686 | { | |
1687 | /* If the source register is exactly the CFA, assume | |
1688 | we're saving SP like any other register; this happens | |
1689 | on the ARM. */ | |
1690 | ||
1691 | def_cfa_1 (label, &cfa); | |
1692 | dwarf2out_reg_save (label, STACK_POINTER_REGNUM, offset); | |
1693 | break; | |
1694 | } | |
1695 | else | |
1696 | { | |
1697 | /* Otherwise, we'll need to look in the stack to | |
1698 | calculate the CFA. */ | |
1699 | ||
1700 | rtx x = XEXP (dest, 0); | |
1701 | if (GET_CODE (x) != REG) | |
1702 | x = XEXP (x, 0); | |
1703 | if (GET_CODE (x) != REG) | |
1704 | abort (); | |
1705 | cfa.reg = (unsigned) REGNO (x); | |
1706 | cfa.base_offset = offset; | |
1707 | cfa.indirect = 1; | |
1708 | def_cfa_1 (label, &cfa); | |
1709 | break; | |
1710 | } | |
1711 | } | |
1712 | ||
7d9d8943 | 1713 | def_cfa_1 (label, &cfa); |
2618f955 MM |
1714 | dwarf2out_reg_save (label, REGNO (src), offset); |
1715 | break; | |
1716 | ||
1717 | default: | |
1718 | abort (); | |
1719 | } | |
b664de3a AM |
1720 | } |
1721 | ||
3f76745e JM |
1722 | /* Record call frame debugging information for INSN, which either |
1723 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1724 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1725 | |
3f76745e JM |
1726 | void |
1727 | dwarf2out_frame_debug (insn) | |
1728 | rtx insn; | |
a3f97cbb | 1729 | { |
d3e3972c | 1730 | const char *label; |
b664de3a | 1731 | rtx src; |
3f76745e JM |
1732 | |
1733 | if (insn == NULL_RTX) | |
a3f97cbb | 1734 | { |
3f76745e | 1735 | /* Set up state for generating call frame debug info. */ |
7d9d8943 AM |
1736 | lookup_cfa (&cfa); |
1737 | if (cfa.reg != (unsigned long) DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) | |
3a88cbd1 | 1738 | abort (); |
7d9d8943 AM |
1739 | cfa.reg = STACK_POINTER_REGNUM; |
1740 | cfa_store = cfa; | |
770ca8c6 JO |
1741 | cfa_temp.reg = -1; |
1742 | cfa_temp.offset = 0; | |
3f76745e JM |
1743 | return; |
1744 | } | |
1745 | ||
0021b564 JM |
1746 | if (! RTX_FRAME_RELATED_P (insn)) |
1747 | { | |
6020d360 | 1748 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1749 | return; |
1750 | } | |
1751 | ||
3f76745e | 1752 | label = dwarf2out_cfi_label (); |
556273e0 | 1753 | |
07ebc930 RH |
1754 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1755 | if (src) | |
1756 | insn = XEXP (src, 0); | |
556273e0 | 1757 | else |
07ebc930 RH |
1758 | insn = PATTERN (insn); |
1759 | ||
b664de3a | 1760 | dwarf2out_frame_debug_expr (insn, label); |
3f76745e JM |
1761 | } |
1762 | ||
1763 | /* Return the size of an unsigned LEB128 quantity. */ | |
1764 | ||
1765 | static inline unsigned long | |
1766 | size_of_uleb128 (value) | |
1767 | register unsigned long value; | |
1768 | { | |
1769 | register unsigned long size = 0; | |
1770 | register unsigned byte; | |
1771 | ||
1772 | do | |
1773 | { | |
1774 | byte = (value & 0x7f); | |
1775 | value >>= 7; | |
1776 | size += 1; | |
1777 | } | |
1778 | while (value != 0); | |
1779 | ||
1780 | return size; | |
1781 | } | |
1782 | ||
1783 | /* Return the size of a signed LEB128 quantity. */ | |
1784 | ||
1785 | static inline unsigned long | |
1786 | size_of_sleb128 (value) | |
1787 | register long value; | |
1788 | { | |
1789 | register unsigned long size = 0; | |
1790 | register unsigned byte; | |
1791 | ||
1792 | do | |
1793 | { | |
1794 | byte = (value & 0x7f); | |
1795 | value >>= 7; | |
1796 | size += 1; | |
1797 | } | |
1798 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1799 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1800 | ||
1801 | return size; | |
1802 | } | |
1803 | ||
3f76745e JM |
1804 | /* Output an unsigned LEB128 quantity. */ |
1805 | ||
1806 | static void | |
1807 | output_uleb128 (value) | |
1808 | register unsigned long value; | |
1809 | { | |
1810 | unsigned long save_value = value; | |
1811 | ||
e8638df0 | 1812 | fprintf (asm_out_file, "%s", ASM_BYTE_OP); |
3f76745e JM |
1813 | do |
1814 | { | |
1815 | register unsigned byte = (value & 0x7f); | |
1816 | value >>= 7; | |
1817 | if (value != 0) | |
1818 | /* More bytes to follow. */ | |
1819 | byte |= 0x80; | |
1820 | ||
1821 | fprintf (asm_out_file, "0x%x", byte); | |
1822 | if (value != 0) | |
1823 | fprintf (asm_out_file, ","); | |
1824 | } | |
1825 | while (value != 0); | |
1826 | ||
c5cec899 | 1827 | if (flag_debug_asm) |
2d8b0f3a | 1828 | fprintf (asm_out_file, "\t%s ULEB128 0x%lx", ASM_COMMENT_START, save_value); |
3f76745e JM |
1829 | } |
1830 | ||
1831 | /* Output an signed LEB128 quantity. */ | |
1832 | ||
1833 | static void | |
1834 | output_sleb128 (value) | |
1835 | register long value; | |
1836 | { | |
1837 | register int more; | |
1838 | register unsigned byte; | |
1839 | long save_value = value; | |
1840 | ||
e8638df0 | 1841 | fprintf (asm_out_file, "%s", ASM_BYTE_OP); |
3f76745e JM |
1842 | do |
1843 | { | |
1844 | byte = (value & 0x7f); | |
1845 | /* arithmetic shift */ | |
1846 | value >>= 7; | |
1847 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1848 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1849 | if (more) | |
1850 | byte |= 0x80; | |
1851 | ||
1852 | fprintf (asm_out_file, "0x%x", byte); | |
1853 | if (more) | |
1854 | fprintf (asm_out_file, ","); | |
1855 | } | |
1856 | ||
1857 | while (more); | |
c5cec899 | 1858 | if (flag_debug_asm) |
2d8b0f3a | 1859 | fprintf (asm_out_file, "\t%s SLEB128 %ld", ASM_COMMENT_START, save_value); |
3f76745e JM |
1860 | } |
1861 | ||
1862 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1863 | ||
1864 | static void | |
1865 | output_cfi (cfi, fde) | |
1866 | register dw_cfi_ref cfi; | |
1867 | register dw_fde_ref fde; | |
1868 | { | |
1869 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1870 | { | |
1871 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1872 | cfi->dw_cfi_opc | |
1873 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1874 | if (flag_debug_asm) |
2d8b0f3a | 1875 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%lx", |
3f76745e JM |
1876 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); |
1877 | fputc ('\n', asm_out_file); | |
1878 | } | |
1879 | ||
1880 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1881 | { | |
1882 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1883 | cfi->dw_cfi_opc | |
1884 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1885 | if (flag_debug_asm) |
2d8b0f3a | 1886 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%lx", |
3f76745e JM |
1887 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1888 | ||
1889 | fputc ('\n', asm_out_file); | |
1890 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1891 | fputc ('\n', asm_out_file); | |
1892 | } | |
1893 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1894 | { | |
1895 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1896 | cfi->dw_cfi_opc | |
1897 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1898 | if (flag_debug_asm) |
2d8b0f3a | 1899 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%lx", |
3f76745e JM |
1900 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1901 | ||
1902 | fputc ('\n', asm_out_file); | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1907 | if (flag_debug_asm) |
3f76745e JM |
1908 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1909 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1910 | ||
1911 | fputc ('\n', asm_out_file); | |
1912 | switch (cfi->dw_cfi_opc) | |
1913 | { | |
1914 | case DW_CFA_set_loc: | |
556273e0 KH |
1915 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); |
1916 | fputc ('\n', asm_out_file); | |
3f76745e JM |
1917 | break; |
1918 | case DW_CFA_advance_loc1: | |
bb727b5a JM |
1919 | ASM_OUTPUT_DWARF_DELTA1 (asm_out_file, |
1920 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1921 | fde->dw_fde_current_label); | |
1922 | fputc ('\n', asm_out_file); | |
1923 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e JM |
1924 | break; |
1925 | case DW_CFA_advance_loc2: | |
556273e0 | 1926 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, |
3f76745e JM |
1927 | cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1928 | fde->dw_fde_current_label); | |
1929 | fputc ('\n', asm_out_file); | |
1930 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1931 | break; | |
1932 | case DW_CFA_advance_loc4: | |
556273e0 | 1933 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, |
3f76745e JM |
1934 | cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1935 | fde->dw_fde_current_label); | |
556273e0 | 1936 | fputc ('\n', asm_out_file); |
3f76745e JM |
1937 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
1938 | break; | |
1939 | #ifdef MIPS_DEBUGGING_INFO | |
1940 | case DW_CFA_MIPS_advance_loc8: | |
1941 | /* TODO: not currently implemented. */ | |
1942 | abort (); | |
1943 | break; | |
1944 | #endif | |
1945 | case DW_CFA_offset_extended: | |
3f388b42 | 1946 | case DW_CFA_GNU_negative_offset_extended: |
3f76745e JM |
1947 | case DW_CFA_def_cfa: |
1948 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1949 | fputc ('\n', asm_out_file); |
3f76745e | 1950 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); |
556273e0 | 1951 | fputc ('\n', asm_out_file); |
3f76745e JM |
1952 | break; |
1953 | case DW_CFA_restore_extended: | |
1954 | case DW_CFA_undefined: | |
1955 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1956 | fputc ('\n', asm_out_file); |
3f76745e JM |
1957 | break; |
1958 | case DW_CFA_same_value: | |
1959 | case DW_CFA_def_cfa_register: | |
1960 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1961 | fputc ('\n', asm_out_file); |
3f76745e JM |
1962 | break; |
1963 | case DW_CFA_register: | |
1964 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1965 | fputc ('\n', asm_out_file); |
3f76745e | 1966 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); |
556273e0 | 1967 | fputc ('\n', asm_out_file); |
3f76745e JM |
1968 | break; |
1969 | case DW_CFA_def_cfa_offset: | |
1970 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
556273e0 | 1971 | fputc ('\n', asm_out_file); |
3f76745e | 1972 | break; |
c53aa195 JM |
1973 | case DW_CFA_GNU_window_save: |
1974 | break; | |
0021b564 JM |
1975 | case DW_CFA_GNU_args_size: |
1976 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
556273e0 | 1977 | fputc ('\n', asm_out_file); |
0021b564 | 1978 | break; |
7d9d8943 AM |
1979 | case DW_CFA_def_cfa_expression: |
1980 | output_cfa_loc (cfi); | |
1981 | break; | |
3f76745e JM |
1982 | default: |
1983 | break; | |
1984 | } | |
556273e0 | 1985 | } |
3f76745e JM |
1986 | } |
1987 | ||
1988 | /* Output the call frame information used to used to record information | |
1989 | that relates to calculating the frame pointer, and records the | |
1990 | location of saved registers. */ | |
1991 | ||
1992 | static void | |
1993 | output_call_frame_info (for_eh) | |
1994 | int for_eh; | |
1995 | { | |
2d8b0f3a | 1996 | register unsigned long i; |
3f76745e | 1997 | register dw_fde_ref fde; |
3f76745e | 1998 | register dw_cfi_ref cfi; |
a6ab3aad | 1999 | char l1[20], l2[20]; |
2ed2af28 PDM |
2000 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
2001 | char ld[20]; | |
2002 | #endif | |
a6ab3aad JM |
2003 | |
2004 | /* Do we want to include a pointer to the exception table? */ | |
2005 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 2006 | |
737faf14 JM |
2007 | /* If we don't have any functions we'll want to unwind out of, don't |
2008 | emit any EH unwind information. */ | |
2009 | if (for_eh) | |
2010 | { | |
2011 | for (i = 0; i < fde_table_in_use; ++i) | |
2012 | if (! fde_table[i].nothrow) | |
2013 | goto found; | |
2014 | return; | |
2015 | found:; | |
2016 | } | |
2017 | ||
3f76745e | 2018 | fputc ('\n', asm_out_file); |
e9e30253 | 2019 | |
aa0c1401 JL |
2020 | /* We're going to be generating comments, so turn on app. */ |
2021 | if (flag_debug_asm) | |
2022 | app_enable (); | |
956d6950 | 2023 | |
3f76745e JM |
2024 | if (for_eh) |
2025 | { | |
2026 | #ifdef EH_FRAME_SECTION | |
0021b564 | 2027 | EH_FRAME_SECTION (); |
3f76745e | 2028 | #else |
496651db | 2029 | tree label = get_file_function_name ('F'); |
0021b564 | 2030 | |
3167de5b | 2031 | force_data_section (); |
a1a4189d | 2032 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE)); |
0021b564 JM |
2033 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
2034 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
2035 | #endif |
2036 | assemble_label ("__FRAME_BEGIN__"); | |
2037 | } | |
2038 | else | |
2039 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
2040 | ||
556273e0 | 2041 | /* Output the CIE. */ |
a6ab3aad JM |
2042 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
2043 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
2044 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
2045 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
2046 | if (for_eh) | |
7bb9fb0e | 2047 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
2048 | else |
2049 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
2050 | #else | |
267c09ab JM |
2051 | if (for_eh) |
2052 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
2053 | else | |
2054 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 2055 | #endif |
c5cec899 | 2056 | if (flag_debug_asm) |
3f76745e JM |
2057 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
2058 | ASM_COMMENT_START); | |
2059 | ||
2060 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
2061 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
2062 | ||
d84e64d4 JM |
2063 | if (for_eh) |
2064 | /* Now that the CIE pointer is PC-relative for EH, | |
2065 | use 0 to identify the CIE. */ | |
2066 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
2067 | else | |
2068 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
2069 | ||
c5cec899 | 2070 | if (flag_debug_asm) |
3f76745e JM |
2071 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
2072 | ||
2073 | fputc ('\n', asm_out_file); | |
d84e64d4 | 2074 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
2075 | { |
2076 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
2077 | fputc ('\n', asm_out_file); | |
2078 | } | |
2079 | ||
2080 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 2081 | if (flag_debug_asm) |
3f76745e JM |
2082 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
2083 | ||
2084 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
2085 | if (eh_ptr) |
2086 | { | |
d84e64d4 JM |
2087 | /* The CIE contains a pointer to the exception region info for the |
2088 | frame. Make the augmentation string three bytes (including the | |
2089 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
2090 | can't handle unaligned relocs. */ | |
c5cec899 | 2091 | if (flag_debug_asm) |
8d4e65a6 JL |
2092 | { |
2093 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
2094 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
2095 | } | |
2096 | else | |
2097 | { | |
c2c85462 | 2098 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 2099 | } |
d84e64d4 JM |
2100 | fputc ('\n', asm_out_file); |
2101 | ||
2102 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
2103 | if (flag_debug_asm) | |
2104 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
2105 | ASM_COMMENT_START); | |
a6ab3aad JM |
2106 | } |
2107 | else | |
2108 | { | |
2109 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 2110 | if (flag_debug_asm) |
a6ab3aad JM |
2111 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
2112 | ASM_COMMENT_START); | |
2113 | } | |
3f76745e JM |
2114 | |
2115 | fputc ('\n', asm_out_file); | |
2116 | output_uleb128 (1); | |
c5cec899 | 2117 | if (flag_debug_asm) |
3f76745e JM |
2118 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
2119 | ||
2120 | fputc ('\n', asm_out_file); | |
2121 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 2122 | if (flag_debug_asm) |
3f76745e JM |
2123 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
2124 | ||
2125 | fputc ('\n', asm_out_file); | |
2126 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 2127 | if (flag_debug_asm) |
3f76745e JM |
2128 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
2129 | ||
2130 | fputc ('\n', asm_out_file); | |
2131 | ||
2132 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
2133 | output_cfi (cfi, NULL); | |
2134 | ||
2135 | /* Pad the CIE out to an address sized boundary. */ | |
a1a4189d | 2136 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE)); |
a6ab3aad | 2137 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
2ed2af28 PDM |
2138 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
2139 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
2140 | if (flag_debug_asm) |
2141 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
2142 | fputc ('\n', asm_out_file); | |
2ed2af28 | 2143 | #endif |
3f76745e JM |
2144 | |
2145 | /* Loop through all of the FDE's. */ | |
2146 | for (i = 0; i < fde_table_in_use; ++i) | |
2147 | { | |
2148 | fde = &fde_table[i]; | |
3f76745e | 2149 | |
737faf14 JM |
2150 | /* Don't emit EH unwind info for leaf functions. */ |
2151 | if (for_eh && fde->nothrow) | |
2152 | continue; | |
2153 | ||
556273e0 KH |
2154 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i * 2); |
2155 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i * 2); | |
2ed2af28 | 2156 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
556273e0 | 2157 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i * 2); |
2ed2af28 | 2158 | if (for_eh) |
7bb9fb0e | 2159 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
2160 | else |
2161 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
2162 | #else | |
267c09ab JM |
2163 | if (for_eh) |
2164 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
2165 | else | |
2166 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 2167 | #endif |
c5cec899 | 2168 | if (flag_debug_asm) |
3f76745e | 2169 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 2170 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
2171 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
2172 | ||
eef906d6 JW |
2173 | /* ??? This always emits a 4 byte offset when for_eh is true, but it |
2174 | emits a target dependent sized offset when for_eh is not true. | |
2175 | This inconsistency may confuse gdb. The only case where we need a | |
2176 | non-4 byte offset is for the Irix6 N64 ABI, so we may lose SGI | |
2177 | compatibility if we emit a 4 byte offset. We need a 4 byte offset | |
2178 | though in order to be compatible with the dwarf_fde struct in frame.c. | |
2179 | If the for_eh case is changed, then the struct in frame.c has | |
2180 | to be adjusted appropriately. */ | |
3f76745e | 2181 | if (for_eh) |
21af493b | 2182 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
2183 | else |
2184 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 2185 | if (flag_debug_asm) |
3f76745e JM |
2186 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
2187 | ||
2188 | fputc ('\n', asm_out_file); | |
2189 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 2190 | if (flag_debug_asm) |
3f76745e JM |
2191 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
2192 | ||
2193 | fputc ('\n', asm_out_file); | |
2194 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
2195 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 2196 | if (flag_debug_asm) |
3f76745e JM |
2197 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
2198 | ||
2199 | fputc ('\n', asm_out_file); | |
2200 | ||
2201 | /* Loop through the Call Frame Instructions associated with | |
2202 | this FDE. */ | |
2203 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
2204 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
2205 | output_cfi (cfi, fde); | |
2206 | ||
a6ab3aad | 2207 | /* Pad the FDE out to an address sized boundary. */ |
a1a4189d | 2208 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE)); |
a6ab3aad | 2209 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
2ed2af28 PDM |
2210 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
2211 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
2212 | if (flag_debug_asm) |
2213 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
2214 | fputc ('\n', asm_out_file); | |
2ed2af28 | 2215 | #endif |
3f76745e JM |
2216 | } |
2217 | #ifndef EH_FRAME_SECTION | |
2218 | if (for_eh) | |
2219 | { | |
2220 | /* Emit terminating zero for table. */ | |
267c09ab | 2221 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
2222 | fputc ('\n', asm_out_file); |
2223 | } | |
2224 | #endif | |
a6ab3aad JM |
2225 | #ifdef MIPS_DEBUGGING_INFO |
2226 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
2227 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
2228 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
2229 | #endif | |
aa0c1401 JL |
2230 | |
2231 | /* Turn off app to make assembly quicker. */ | |
2232 | if (flag_debug_asm) | |
2233 | app_disable (); | |
a6ab3aad JM |
2234 | } |
2235 | ||
3f76745e JM |
2236 | /* Output a marker (i.e. a label) for the beginning of a function, before |
2237 | the prologue. */ | |
2238 | ||
2239 | void | |
2240 | dwarf2out_begin_prologue () | |
2241 | { | |
2242 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2243 | register dw_fde_ref fde; | |
2244 | ||
4f988ea2 JM |
2245 | ++current_funcdef_number; |
2246 | ||
3f76745e JM |
2247 | function_section (current_function_decl); |
2248 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
2249 | current_funcdef_number); | |
2250 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
00262c8a | 2251 | current_function_func_begin_label = get_identifier (label); |
3f76745e JM |
2252 | |
2253 | /* Expand the fde table if necessary. */ | |
2254 | if (fde_table_in_use == fde_table_allocated) | |
2255 | { | |
2256 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
2257 | fde_table | |
2258 | = (dw_fde_ref) xrealloc (fde_table, | |
2259 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 2260 | } |
3f76745e JM |
2261 | |
2262 | /* Record the FDE associated with this function. */ | |
2263 | current_funcdef_fde = fde_table_in_use; | |
2264 | ||
2265 | /* Add the new FDE at the end of the fde_table. */ | |
2266 | fde = &fde_table[fde_table_in_use++]; | |
2267 | fde->dw_fde_begin = xstrdup (label); | |
2268 | fde->dw_fde_current_label = NULL; | |
2269 | fde->dw_fde_end = NULL; | |
2270 | fde->dw_fde_cfi = NULL; | |
fb13d4d0 | 2271 | fde->nothrow = current_function_nothrow; |
737faf14 | 2272 | |
b57d9225 | 2273 | args_size = old_args_size = 0; |
3f76745e JM |
2274 | } |
2275 | ||
2276 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
2277 | for a function definition. This gets called *after* the epilogue code has | |
2278 | been generated. */ | |
2279 | ||
2280 | void | |
2281 | dwarf2out_end_epilogue () | |
2282 | { | |
2283 | dw_fde_ref fde; | |
2284 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2285 | ||
2286 | /* Output a label to mark the endpoint of the code generated for this | |
2287 | function. */ | |
2288 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
2289 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
2290 | fde = &fde_table[fde_table_in_use - 1]; | |
2291 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
2292 | } |
2293 | ||
2294 | void | |
2295 | dwarf2out_frame_init () | |
2296 | { | |
2297 | /* Allocate the initial hunk of the fde_table. */ | |
3de90026 | 2298 | fde_table = (dw_fde_ref) xcalloc (FDE_TABLE_INCREMENT, sizeof (dw_fde_node)); |
3f76745e JM |
2299 | fde_table_allocated = FDE_TABLE_INCREMENT; |
2300 | fde_table_in_use = 0; | |
2301 | ||
2302 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
2303 | sake of lookup_cfa. */ | |
2304 | ||
a6ab3aad | 2305 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
2306 | /* On entry, the Canonical Frame Address is at SP. */ |
2307 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
2308 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
2309 | #endif |
2310 | } | |
2311 | ||
2312 | void | |
2313 | dwarf2out_frame_finish () | |
2314 | { | |
3f76745e | 2315 | /* Output call frame information. */ |
a6ab3aad | 2316 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
2317 | if (write_symbols == DWARF2_DEBUG) |
2318 | output_call_frame_info (0); | |
14a774a9 | 2319 | if (flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
3f76745e | 2320 | output_call_frame_info (1); |
a6ab3aad JM |
2321 | #else |
2322 | if (write_symbols == DWARF2_DEBUG | |
14a774a9 | 2323 | || flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
556273e0 | 2324 | output_call_frame_info (1); |
a6ab3aad | 2325 | #endif |
556273e0 | 2326 | } |
7d9d8943 AM |
2327 | \f |
2328 | /* And now, the subset of the debugging information support code necessary | |
2329 | for emitting location expressions. */ | |
3f76745e | 2330 | |
7d9d8943 AM |
2331 | typedef struct dw_val_struct *dw_val_ref; |
2332 | typedef struct die_struct *dw_die_ref; | |
2333 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
3f76745e JM |
2334 | |
2335 | /* Each DIE may have a series of attribute/value pairs. Values | |
2336 | can take on several forms. The forms that are used in this | |
2337 | implementation are listed below. */ | |
2338 | ||
2339 | typedef enum | |
2340 | { | |
2341 | dw_val_class_addr, | |
2342 | dw_val_class_loc, | |
2343 | dw_val_class_const, | |
2344 | dw_val_class_unsigned_const, | |
2345 | dw_val_class_long_long, | |
2346 | dw_val_class_float, | |
2347 | dw_val_class_flag, | |
2348 | dw_val_class_die_ref, | |
2349 | dw_val_class_fde_ref, | |
2350 | dw_val_class_lbl_id, | |
8b790721 | 2351 | dw_val_class_lbl_offset, |
3f76745e | 2352 | dw_val_class_str |
a3f97cbb | 2353 | } |
3f76745e | 2354 | dw_val_class; |
a3f97cbb | 2355 | |
3f76745e | 2356 | /* Describe a double word constant value. */ |
21217bd0 | 2357 | /* ??? Every instance of long_long in the code really means CONST_DOUBLE. */ |
3f76745e JM |
2358 | |
2359 | typedef struct dw_long_long_struct | |
a3f97cbb | 2360 | { |
3f76745e JM |
2361 | unsigned long hi; |
2362 | unsigned long low; | |
2363 | } | |
2364 | dw_long_long_const; | |
2365 | ||
2366 | /* Describe a floating point constant value. */ | |
2367 | ||
2368 | typedef struct dw_fp_struct | |
2369 | { | |
2370 | long *array; | |
2371 | unsigned length; | |
2372 | } | |
2373 | dw_float_const; | |
2374 | ||
956d6950 | 2375 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2376 | represented internally. */ |
2377 | ||
2378 | typedef struct dw_val_struct | |
2379 | { | |
2380 | dw_val_class val_class; | |
2381 | union | |
a3f97cbb | 2382 | { |
1865dbb5 | 2383 | rtx val_addr; |
3f76745e JM |
2384 | dw_loc_descr_ref val_loc; |
2385 | long int val_int; | |
2386 | long unsigned val_unsigned; | |
2387 | dw_long_long_const val_long_long; | |
2388 | dw_float_const val_float; | |
881c6935 JM |
2389 | struct { |
2390 | dw_die_ref die; | |
2391 | int external; | |
2392 | } val_die_ref; | |
3f76745e JM |
2393 | unsigned val_fde_index; |
2394 | char *val_str; | |
2395 | char *val_lbl_id; | |
3f76745e | 2396 | unsigned char val_flag; |
a3f97cbb | 2397 | } |
3f76745e JM |
2398 | v; |
2399 | } | |
2400 | dw_val_node; | |
2401 | ||
2402 | /* Locations in memory are described using a sequence of stack machine | |
2403 | operations. */ | |
2404 | ||
2405 | typedef struct dw_loc_descr_struct | |
2406 | { | |
2407 | dw_loc_descr_ref dw_loc_next; | |
2408 | enum dwarf_location_atom dw_loc_opc; | |
2409 | dw_val_node dw_loc_oprnd1; | |
2410 | dw_val_node dw_loc_oprnd2; | |
d8041cc8 | 2411 | int dw_loc_addr; |
3f76745e JM |
2412 | } |
2413 | dw_loc_descr_node; | |
2414 | ||
7d9d8943 AM |
2415 | static const char *dwarf_stack_op_name PARAMS ((unsigned)); |
2416 | static dw_loc_descr_ref new_loc_descr PARAMS ((enum dwarf_location_atom, | |
2417 | unsigned long, | |
2418 | unsigned long)); | |
2419 | static void add_loc_descr PARAMS ((dw_loc_descr_ref *, | |
2420 | dw_loc_descr_ref)); | |
2421 | static unsigned long size_of_loc_descr PARAMS ((dw_loc_descr_ref)); | |
2422 | static unsigned long size_of_locs PARAMS ((dw_loc_descr_ref)); | |
2423 | static void output_loc_operands PARAMS ((dw_loc_descr_ref)); | |
2424 | static void output_loc_sequence PARAMS ((dw_loc_descr_ref)); | |
3f76745e | 2425 | |
7d9d8943 | 2426 | /* Convert a DWARF stack opcode into its string name. */ |
3f76745e | 2427 | |
7d9d8943 AM |
2428 | static const char * |
2429 | dwarf_stack_op_name (op) | |
2430 | register unsigned op; | |
ef76d03b | 2431 | { |
7d9d8943 AM |
2432 | switch (op) |
2433 | { | |
2434 | case DW_OP_addr: | |
2435 | return "DW_OP_addr"; | |
2436 | case DW_OP_deref: | |
2437 | return "DW_OP_deref"; | |
2438 | case DW_OP_const1u: | |
2439 | return "DW_OP_const1u"; | |
2440 | case DW_OP_const1s: | |
2441 | return "DW_OP_const1s"; | |
2442 | case DW_OP_const2u: | |
2443 | return "DW_OP_const2u"; | |
2444 | case DW_OP_const2s: | |
2445 | return "DW_OP_const2s"; | |
2446 | case DW_OP_const4u: | |
2447 | return "DW_OP_const4u"; | |
2448 | case DW_OP_const4s: | |
2449 | return "DW_OP_const4s"; | |
2450 | case DW_OP_const8u: | |
2451 | return "DW_OP_const8u"; | |
2452 | case DW_OP_const8s: | |
2453 | return "DW_OP_const8s"; | |
2454 | case DW_OP_constu: | |
2455 | return "DW_OP_constu"; | |
2456 | case DW_OP_consts: | |
2457 | return "DW_OP_consts"; | |
2458 | case DW_OP_dup: | |
2459 | return "DW_OP_dup"; | |
2460 | case DW_OP_drop: | |
2461 | return "DW_OP_drop"; | |
2462 | case DW_OP_over: | |
2463 | return "DW_OP_over"; | |
2464 | case DW_OP_pick: | |
2465 | return "DW_OP_pick"; | |
2466 | case DW_OP_swap: | |
2467 | return "DW_OP_swap"; | |
2468 | case DW_OP_rot: | |
2469 | return "DW_OP_rot"; | |
2470 | case DW_OP_xderef: | |
2471 | return "DW_OP_xderef"; | |
2472 | case DW_OP_abs: | |
2473 | return "DW_OP_abs"; | |
2474 | case DW_OP_and: | |
2475 | return "DW_OP_and"; | |
2476 | case DW_OP_div: | |
2477 | return "DW_OP_div"; | |
2478 | case DW_OP_minus: | |
2479 | return "DW_OP_minus"; | |
2480 | case DW_OP_mod: | |
2481 | return "DW_OP_mod"; | |
2482 | case DW_OP_mul: | |
2483 | return "DW_OP_mul"; | |
2484 | case DW_OP_neg: | |
2485 | return "DW_OP_neg"; | |
2486 | case DW_OP_not: | |
2487 | return "DW_OP_not"; | |
2488 | case DW_OP_or: | |
2489 | return "DW_OP_or"; | |
2490 | case DW_OP_plus: | |
2491 | return "DW_OP_plus"; | |
2492 | case DW_OP_plus_uconst: | |
2493 | return "DW_OP_plus_uconst"; | |
2494 | case DW_OP_shl: | |
2495 | return "DW_OP_shl"; | |
2496 | case DW_OP_shr: | |
2497 | return "DW_OP_shr"; | |
2498 | case DW_OP_shra: | |
2499 | return "DW_OP_shra"; | |
2500 | case DW_OP_xor: | |
2501 | return "DW_OP_xor"; | |
2502 | case DW_OP_bra: | |
2503 | return "DW_OP_bra"; | |
2504 | case DW_OP_eq: | |
2505 | return "DW_OP_eq"; | |
2506 | case DW_OP_ge: | |
2507 | return "DW_OP_ge"; | |
2508 | case DW_OP_gt: | |
2509 | return "DW_OP_gt"; | |
2510 | case DW_OP_le: | |
2511 | return "DW_OP_le"; | |
2512 | case DW_OP_lt: | |
2513 | return "DW_OP_lt"; | |
2514 | case DW_OP_ne: | |
2515 | return "DW_OP_ne"; | |
2516 | case DW_OP_skip: | |
2517 | return "DW_OP_skip"; | |
2518 | case DW_OP_lit0: | |
2519 | return "DW_OP_lit0"; | |
2520 | case DW_OP_lit1: | |
2521 | return "DW_OP_lit1"; | |
2522 | case DW_OP_lit2: | |
2523 | return "DW_OP_lit2"; | |
2524 | case DW_OP_lit3: | |
2525 | return "DW_OP_lit3"; | |
2526 | case DW_OP_lit4: | |
2527 | return "DW_OP_lit4"; | |
2528 | case DW_OP_lit5: | |
2529 | return "DW_OP_lit5"; | |
2530 | case DW_OP_lit6: | |
2531 | return "DW_OP_lit6"; | |
2532 | case DW_OP_lit7: | |
2533 | return "DW_OP_lit7"; | |
2534 | case DW_OP_lit8: | |
2535 | return "DW_OP_lit8"; | |
2536 | case DW_OP_lit9: | |
2537 | return "DW_OP_lit9"; | |
2538 | case DW_OP_lit10: | |
2539 | return "DW_OP_lit10"; | |
2540 | case DW_OP_lit11: | |
2541 | return "DW_OP_lit11"; | |
2542 | case DW_OP_lit12: | |
2543 | return "DW_OP_lit12"; | |
2544 | case DW_OP_lit13: | |
2545 | return "DW_OP_lit13"; | |
2546 | case DW_OP_lit14: | |
2547 | return "DW_OP_lit14"; | |
2548 | case DW_OP_lit15: | |
2549 | return "DW_OP_lit15"; | |
2550 | case DW_OP_lit16: | |
2551 | return "DW_OP_lit16"; | |
2552 | case DW_OP_lit17: | |
2553 | return "DW_OP_lit17"; | |
2554 | case DW_OP_lit18: | |
2555 | return "DW_OP_lit18"; | |
2556 | case DW_OP_lit19: | |
2557 | return "DW_OP_lit19"; | |
2558 | case DW_OP_lit20: | |
2559 | return "DW_OP_lit20"; | |
2560 | case DW_OP_lit21: | |
2561 | return "DW_OP_lit21"; | |
2562 | case DW_OP_lit22: | |
2563 | return "DW_OP_lit22"; | |
2564 | case DW_OP_lit23: | |
2565 | return "DW_OP_lit23"; | |
2566 | case DW_OP_lit24: | |
2567 | return "DW_OP_lit24"; | |
2568 | case DW_OP_lit25: | |
2569 | return "DW_OP_lit25"; | |
2570 | case DW_OP_lit26: | |
2571 | return "DW_OP_lit26"; | |
2572 | case DW_OP_lit27: | |
2573 | return "DW_OP_lit27"; | |
2574 | case DW_OP_lit28: | |
2575 | return "DW_OP_lit28"; | |
2576 | case DW_OP_lit29: | |
2577 | return "DW_OP_lit29"; | |
2578 | case DW_OP_lit30: | |
2579 | return "DW_OP_lit30"; | |
2580 | case DW_OP_lit31: | |
2581 | return "DW_OP_lit31"; | |
2582 | case DW_OP_reg0: | |
2583 | return "DW_OP_reg0"; | |
2584 | case DW_OP_reg1: | |
2585 | return "DW_OP_reg1"; | |
2586 | case DW_OP_reg2: | |
2587 | return "DW_OP_reg2"; | |
2588 | case DW_OP_reg3: | |
2589 | return "DW_OP_reg3"; | |
2590 | case DW_OP_reg4: | |
2591 | return "DW_OP_reg4"; | |
2592 | case DW_OP_reg5: | |
2593 | return "DW_OP_reg5"; | |
2594 | case DW_OP_reg6: | |
2595 | return "DW_OP_reg6"; | |
2596 | case DW_OP_reg7: | |
2597 | return "DW_OP_reg7"; | |
2598 | case DW_OP_reg8: | |
2599 | return "DW_OP_reg8"; | |
2600 | case DW_OP_reg9: | |
2601 | return "DW_OP_reg9"; | |
2602 | case DW_OP_reg10: | |
2603 | return "DW_OP_reg10"; | |
2604 | case DW_OP_reg11: | |
2605 | return "DW_OP_reg11"; | |
2606 | case DW_OP_reg12: | |
2607 | return "DW_OP_reg12"; | |
2608 | case DW_OP_reg13: | |
2609 | return "DW_OP_reg13"; | |
2610 | case DW_OP_reg14: | |
2611 | return "DW_OP_reg14"; | |
2612 | case DW_OP_reg15: | |
2613 | return "DW_OP_reg15"; | |
2614 | case DW_OP_reg16: | |
2615 | return "DW_OP_reg16"; | |
2616 | case DW_OP_reg17: | |
2617 | return "DW_OP_reg17"; | |
2618 | case DW_OP_reg18: | |
2619 | return "DW_OP_reg18"; | |
2620 | case DW_OP_reg19: | |
2621 | return "DW_OP_reg19"; | |
2622 | case DW_OP_reg20: | |
2623 | return "DW_OP_reg20"; | |
2624 | case DW_OP_reg21: | |
2625 | return "DW_OP_reg21"; | |
2626 | case DW_OP_reg22: | |
2627 | return "DW_OP_reg22"; | |
2628 | case DW_OP_reg23: | |
2629 | return "DW_OP_reg23"; | |
2630 | case DW_OP_reg24: | |
2631 | return "DW_OP_reg24"; | |
2632 | case DW_OP_reg25: | |
2633 | return "DW_OP_reg25"; | |
2634 | case DW_OP_reg26: | |
2635 | return "DW_OP_reg26"; | |
2636 | case DW_OP_reg27: | |
2637 | return "DW_OP_reg27"; | |
2638 | case DW_OP_reg28: | |
2639 | return "DW_OP_reg28"; | |
2640 | case DW_OP_reg29: | |
2641 | return "DW_OP_reg29"; | |
2642 | case DW_OP_reg30: | |
2643 | return "DW_OP_reg30"; | |
2644 | case DW_OP_reg31: | |
2645 | return "DW_OP_reg31"; | |
2646 | case DW_OP_breg0: | |
2647 | return "DW_OP_breg0"; | |
2648 | case DW_OP_breg1: | |
2649 | return "DW_OP_breg1"; | |
2650 | case DW_OP_breg2: | |
2651 | return "DW_OP_breg2"; | |
2652 | case DW_OP_breg3: | |
2653 | return "DW_OP_breg3"; | |
2654 | case DW_OP_breg4: | |
2655 | return "DW_OP_breg4"; | |
2656 | case DW_OP_breg5: | |
2657 | return "DW_OP_breg5"; | |
2658 | case DW_OP_breg6: | |
2659 | return "DW_OP_breg6"; | |
2660 | case DW_OP_breg7: | |
2661 | return "DW_OP_breg7"; | |
2662 | case DW_OP_breg8: | |
2663 | return "DW_OP_breg8"; | |
2664 | case DW_OP_breg9: | |
2665 | return "DW_OP_breg9"; | |
2666 | case DW_OP_breg10: | |
2667 | return "DW_OP_breg10"; | |
2668 | case DW_OP_breg11: | |
2669 | return "DW_OP_breg11"; | |
2670 | case DW_OP_breg12: | |
2671 | return "DW_OP_breg12"; | |
2672 | case DW_OP_breg13: | |
2673 | return "DW_OP_breg13"; | |
2674 | case DW_OP_breg14: | |
2675 | return "DW_OP_breg14"; | |
2676 | case DW_OP_breg15: | |
2677 | return "DW_OP_breg15"; | |
2678 | case DW_OP_breg16: | |
2679 | return "DW_OP_breg16"; | |
2680 | case DW_OP_breg17: | |
2681 | return "DW_OP_breg17"; | |
2682 | case DW_OP_breg18: | |
2683 | return "DW_OP_breg18"; | |
2684 | case DW_OP_breg19: | |
2685 | return "DW_OP_breg19"; | |
2686 | case DW_OP_breg20: | |
2687 | return "DW_OP_breg20"; | |
2688 | case DW_OP_breg21: | |
2689 | return "DW_OP_breg21"; | |
2690 | case DW_OP_breg22: | |
2691 | return "DW_OP_breg22"; | |
2692 | case DW_OP_breg23: | |
2693 | return "DW_OP_breg23"; | |
2694 | case DW_OP_breg24: | |
2695 | return "DW_OP_breg24"; | |
2696 | case DW_OP_breg25: | |
2697 | return "DW_OP_breg25"; | |
2698 | case DW_OP_breg26: | |
2699 | return "DW_OP_breg26"; | |
2700 | case DW_OP_breg27: | |
2701 | return "DW_OP_breg27"; | |
2702 | case DW_OP_breg28: | |
2703 | return "DW_OP_breg28"; | |
2704 | case DW_OP_breg29: | |
2705 | return "DW_OP_breg29"; | |
2706 | case DW_OP_breg30: | |
2707 | return "DW_OP_breg30"; | |
2708 | case DW_OP_breg31: | |
2709 | return "DW_OP_breg31"; | |
2710 | case DW_OP_regx: | |
2711 | return "DW_OP_regx"; | |
2712 | case DW_OP_fbreg: | |
2713 | return "DW_OP_fbreg"; | |
2714 | case DW_OP_bregx: | |
2715 | return "DW_OP_bregx"; | |
2716 | case DW_OP_piece: | |
2717 | return "DW_OP_piece"; | |
2718 | case DW_OP_deref_size: | |
2719 | return "DW_OP_deref_size"; | |
2720 | case DW_OP_xderef_size: | |
2721 | return "DW_OP_xderef_size"; | |
2722 | case DW_OP_nop: | |
2723 | return "DW_OP_nop"; | |
3f76745e | 2724 | default: |
7d9d8943 | 2725 | return "OP_<unknown>"; |
3f76745e | 2726 | } |
bdb669cb | 2727 | } |
a3f97cbb | 2728 | |
7d9d8943 AM |
2729 | /* Return a pointer to a newly allocated location description. Location |
2730 | descriptions are simple expression terms that can be strung | |
2731 | together to form more complicated location (address) descriptions. */ | |
2732 | ||
2733 | static inline dw_loc_descr_ref | |
2734 | new_loc_descr (op, oprnd1, oprnd2) | |
2735 | register enum dwarf_location_atom op; | |
2736 | register unsigned long oprnd1; | |
2737 | register unsigned long oprnd2; | |
4b674448 | 2738 | { |
5de0e8d4 JM |
2739 | /* Use xcalloc here so we clear out all of the long_long constant in |
2740 | the union. */ | |
7d9d8943 | 2741 | register dw_loc_descr_ref descr |
5de0e8d4 | 2742 | = (dw_loc_descr_ref) xcalloc (1, sizeof (dw_loc_descr_node)); |
71dfc51f | 2743 | |
7d9d8943 AM |
2744 | descr->dw_loc_opc = op; |
2745 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
2746 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
2747 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
2748 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 2749 | |
7d9d8943 AM |
2750 | return descr; |
2751 | } | |
2752 | ||
2753 | /* Add a location description term to a location description expression. */ | |
2754 | ||
2755 | static inline void | |
2756 | add_loc_descr (list_head, descr) | |
2757 | register dw_loc_descr_ref *list_head; | |
2758 | register dw_loc_descr_ref descr; | |
2759 | { | |
2760 | register dw_loc_descr_ref *d; | |
2761 | ||
2762 | /* Find the end of the chain. */ | |
2763 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
2764 | ; | |
2765 | ||
2766 | *d = descr; | |
2767 | } | |
2768 | ||
2769 | /* Return the size of a location descriptor. */ | |
2770 | ||
2771 | static unsigned long | |
2772 | size_of_loc_descr (loc) | |
2773 | register dw_loc_descr_ref loc; | |
2774 | { | |
2775 | register unsigned long size = 1; | |
2776 | ||
2777 | switch (loc->dw_loc_opc) | |
2778 | { | |
2779 | case DW_OP_addr: | |
2780 | size += DWARF2_ADDR_SIZE; | |
2781 | break; | |
2782 | case DW_OP_const1u: | |
2783 | case DW_OP_const1s: | |
2784 | size += 1; | |
2785 | break; | |
2786 | case DW_OP_const2u: | |
2787 | case DW_OP_const2s: | |
2788 | size += 2; | |
2789 | break; | |
2790 | case DW_OP_const4u: | |
2791 | case DW_OP_const4s: | |
2792 | size += 4; | |
2793 | break; | |
2794 | case DW_OP_const8u: | |
2795 | case DW_OP_const8s: | |
2796 | size += 8; | |
2797 | break; | |
2798 | case DW_OP_constu: | |
2799 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2800 | break; | |
2801 | case DW_OP_consts: | |
2802 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2803 | break; | |
2804 | case DW_OP_pick: | |
2805 | size += 1; | |
2806 | break; | |
2807 | case DW_OP_plus_uconst: | |
2808 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2809 | break; | |
2810 | case DW_OP_skip: | |
2811 | case DW_OP_bra: | |
2812 | size += 2; | |
2813 | break; | |
2814 | case DW_OP_breg0: | |
2815 | case DW_OP_breg1: | |
2816 | case DW_OP_breg2: | |
2817 | case DW_OP_breg3: | |
2818 | case DW_OP_breg4: | |
2819 | case DW_OP_breg5: | |
2820 | case DW_OP_breg6: | |
2821 | case DW_OP_breg7: | |
2822 | case DW_OP_breg8: | |
2823 | case DW_OP_breg9: | |
2824 | case DW_OP_breg10: | |
2825 | case DW_OP_breg11: | |
2826 | case DW_OP_breg12: | |
2827 | case DW_OP_breg13: | |
2828 | case DW_OP_breg14: | |
2829 | case DW_OP_breg15: | |
2830 | case DW_OP_breg16: | |
2831 | case DW_OP_breg17: | |
2832 | case DW_OP_breg18: | |
2833 | case DW_OP_breg19: | |
2834 | case DW_OP_breg20: | |
2835 | case DW_OP_breg21: | |
2836 | case DW_OP_breg22: | |
2837 | case DW_OP_breg23: | |
2838 | case DW_OP_breg24: | |
2839 | case DW_OP_breg25: | |
2840 | case DW_OP_breg26: | |
2841 | case DW_OP_breg27: | |
2842 | case DW_OP_breg28: | |
2843 | case DW_OP_breg29: | |
2844 | case DW_OP_breg30: | |
2845 | case DW_OP_breg31: | |
2846 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2847 | break; | |
2848 | case DW_OP_regx: | |
2849 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2850 | break; | |
2851 | case DW_OP_fbreg: | |
2852 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2853 | break; | |
2854 | case DW_OP_bregx: | |
2855 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2856 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
2857 | break; | |
2858 | case DW_OP_piece: | |
2859 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2860 | break; | |
2861 | case DW_OP_deref_size: | |
2862 | case DW_OP_xderef_size: | |
2863 | size += 1; | |
2864 | break; | |
3f76745e | 2865 | default: |
7d9d8943 | 2866 | break; |
4b674448 | 2867 | } |
7d9d8943 AM |
2868 | |
2869 | return size; | |
4b674448 JM |
2870 | } |
2871 | ||
7d9d8943 | 2872 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 2873 | |
7d9d8943 AM |
2874 | static unsigned long |
2875 | size_of_locs (loc) | |
2876 | register dw_loc_descr_ref loc; | |
4b674448 | 2877 | { |
7d9d8943 AM |
2878 | register unsigned long size = 0; |
2879 | ||
2880 | for (; loc != NULL; loc = loc->dw_loc_next) | |
d8041cc8 RH |
2881 | { |
2882 | loc->dw_loc_addr = size; | |
2883 | size += size_of_loc_descr (loc); | |
2884 | } | |
7d9d8943 AM |
2885 | |
2886 | return size; | |
4b674448 JM |
2887 | } |
2888 | ||
7d9d8943 | 2889 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 2890 | |
7d9d8943 AM |
2891 | static void |
2892 | output_loc_operands (loc) | |
2893 | register dw_loc_descr_ref loc; | |
a3f97cbb | 2894 | { |
7d9d8943 AM |
2895 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
2896 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
2897 | ||
2898 | switch (loc->dw_loc_opc) | |
a3f97cbb | 2899 | { |
0517872a | 2900 | #ifdef DWARF2_DEBUGGING_INFO |
3f76745e | 2901 | case DW_OP_addr: |
7d9d8943 AM |
2902 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); |
2903 | fputc ('\n', asm_out_file); | |
2904 | break; | |
3f76745e | 2905 | case DW_OP_const2u: |
3f76745e | 2906 | case DW_OP_const2s: |
7d9d8943 AM |
2907 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); |
2908 | fputc ('\n', asm_out_file); | |
2909 | break; | |
3f76745e | 2910 | case DW_OP_const4u: |
3f76745e | 2911 | case DW_OP_const4s: |
7d9d8943 AM |
2912 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); |
2913 | fputc ('\n', asm_out_file); | |
2914 | break; | |
3f76745e | 2915 | case DW_OP_const8u: |
3f76745e | 2916 | case DW_OP_const8s: |
7d9d8943 AM |
2917 | abort (); |
2918 | fputc ('\n', asm_out_file); | |
2919 | break; | |
0517872a JM |
2920 | case DW_OP_skip: |
2921 | case DW_OP_bra: | |
d8041cc8 RH |
2922 | { |
2923 | int offset; | |
2924 | ||
2925 | if (val1->val_class == dw_val_class_loc) | |
2926 | offset = val1->v.val_loc->dw_loc_addr - (loc->dw_loc_addr + 3); | |
2927 | else | |
2928 | abort (); | |
2929 | ||
2930 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, offset); | |
2931 | fputc ('\n', asm_out_file); | |
2932 | } | |
0517872a | 2933 | break; |
3139472f JM |
2934 | #else |
2935 | case DW_OP_addr: | |
2936 | case DW_OP_const2u: | |
2937 | case DW_OP_const2s: | |
2938 | case DW_OP_const4u: | |
2939 | case DW_OP_const4s: | |
2940 | case DW_OP_const8u: | |
2941 | case DW_OP_const8s: | |
2942 | case DW_OP_skip: | |
2943 | case DW_OP_bra: | |
2944 | /* We currently don't make any attempt to make sure these are | |
2945 | aligned properly like we do for the main unwind info, so | |
2946 | don't support emitting things larger than a byte if we're | |
2947 | only doing unwinding. */ | |
2948 | abort (); | |
0517872a JM |
2949 | #endif |
2950 | case DW_OP_const1u: | |
2951 | case DW_OP_const1s: | |
2952 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
2953 | fputc ('\n', asm_out_file); | |
2954 | break; | |
3f76745e | 2955 | case DW_OP_constu: |
7d9d8943 AM |
2956 | output_uleb128 (val1->v.val_unsigned); |
2957 | fputc ('\n', asm_out_file); | |
2958 | break; | |
3f76745e | 2959 | case DW_OP_consts: |
7d9d8943 AM |
2960 | output_sleb128 (val1->v.val_int); |
2961 | fputc ('\n', asm_out_file); | |
2962 | break; | |
2963 | case DW_OP_pick: | |
2964 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
2965 | fputc ('\n', asm_out_file); | |
2966 | break; | |
2967 | case DW_OP_plus_uconst: | |
2968 | output_uleb128 (val1->v.val_unsigned); | |
2969 | fputc ('\n', asm_out_file); | |
2970 | break; | |
3f76745e | 2971 | case DW_OP_breg0: |
3f76745e | 2972 | case DW_OP_breg1: |
3f76745e | 2973 | case DW_OP_breg2: |
3f76745e | 2974 | case DW_OP_breg3: |
3f76745e | 2975 | case DW_OP_breg4: |
3f76745e | 2976 | case DW_OP_breg5: |
3f76745e | 2977 | case DW_OP_breg6: |
3f76745e | 2978 | case DW_OP_breg7: |
3f76745e | 2979 | case DW_OP_breg8: |
3f76745e | 2980 | case DW_OP_breg9: |
3f76745e | 2981 | case DW_OP_breg10: |
3f76745e | 2982 | case DW_OP_breg11: |
3f76745e | 2983 | case DW_OP_breg12: |
3f76745e | 2984 | case DW_OP_breg13: |
3f76745e | 2985 | case DW_OP_breg14: |
3f76745e | 2986 | case DW_OP_breg15: |
3f76745e | 2987 | case DW_OP_breg16: |
3f76745e | 2988 | case DW_OP_breg17: |
3f76745e | 2989 | case DW_OP_breg18: |
3f76745e | 2990 | case DW_OP_breg19: |
3f76745e | 2991 | case DW_OP_breg20: |
3f76745e | 2992 | case DW_OP_breg21: |
3f76745e | 2993 | case DW_OP_breg22: |
3f76745e | 2994 | case DW_OP_breg23: |
3f76745e | 2995 | case DW_OP_breg24: |
3f76745e | 2996 | case DW_OP_breg25: |
3f76745e | 2997 | case DW_OP_breg26: |
3f76745e | 2998 | case DW_OP_breg27: |
3f76745e | 2999 | case DW_OP_breg28: |
3f76745e | 3000 | case DW_OP_breg29: |
3f76745e | 3001 | case DW_OP_breg30: |
3f76745e | 3002 | case DW_OP_breg31: |
7d9d8943 AM |
3003 | output_sleb128 (val1->v.val_int); |
3004 | fputc ('\n', asm_out_file); | |
3005 | break; | |
3f76745e | 3006 | case DW_OP_regx: |
7d9d8943 AM |
3007 | output_uleb128 (val1->v.val_unsigned); |
3008 | fputc ('\n', asm_out_file); | |
3009 | break; | |
3f76745e | 3010 | case DW_OP_fbreg: |
7d9d8943 AM |
3011 | output_sleb128 (val1->v.val_int); |
3012 | fputc ('\n', asm_out_file); | |
3013 | break; | |
3f76745e | 3014 | case DW_OP_bregx: |
7d9d8943 AM |
3015 | output_uleb128 (val1->v.val_unsigned); |
3016 | fputc ('\n', asm_out_file); | |
3017 | output_sleb128 (val2->v.val_int); | |
3018 | fputc ('\n', asm_out_file); | |
3019 | break; | |
3f76745e | 3020 | case DW_OP_piece: |
7d9d8943 AM |
3021 | output_uleb128 (val1->v.val_unsigned); |
3022 | fputc ('\n', asm_out_file); | |
3023 | break; | |
3f76745e | 3024 | case DW_OP_deref_size: |
3f76745e | 3025 | case DW_OP_xderef_size: |
7d9d8943 AM |
3026 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); |
3027 | fputc ('\n', asm_out_file); | |
3028 | break; | |
3029 | default: | |
3139472f JM |
3030 | /* Other codes have no operands. */ |
3031 | break; | |
7d9d8943 AM |
3032 | } |
3033 | } | |
3034 | ||
3035 | /* Output a sequence of location operations. */ | |
3036 | ||
3037 | static void | |
3038 | output_loc_sequence (loc) | |
3039 | dw_loc_descr_ref loc; | |
3040 | { | |
3041 | for (; loc != NULL; loc = loc->dw_loc_next) | |
3042 | { | |
3043 | /* Output the opcode. */ | |
3044 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
3045 | if (flag_debug_asm) | |
3046 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, | |
3047 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
3048 | ||
3049 | fputc ('\n', asm_out_file); | |
3050 | ||
3051 | /* Output the operand(s) (if any). */ | |
3052 | output_loc_operands (loc); | |
3053 | } | |
3054 | } | |
3055 | ||
3056 | /* This routine will generate the correct assembly data for a location | |
3057 | description based on a cfi entry with a complex address. */ | |
3058 | ||
3059 | static void | |
3060 | output_cfa_loc (cfi) | |
3061 | dw_cfi_ref cfi; | |
3062 | { | |
3063 | dw_loc_descr_ref loc; | |
3064 | unsigned long size; | |
3065 | ||
3066 | /* Output the size of the block. */ | |
3067 | loc = cfi->dw_cfi_oprnd1.dw_cfi_loc; | |
3068 | size = size_of_locs (loc); | |
3069 | output_uleb128 (size); | |
3070 | fputc ('\n', asm_out_file); | |
3071 | ||
3072 | /* Now output the operations themselves. */ | |
3073 | output_loc_sequence (loc); | |
3074 | } | |
3075 | ||
556273e0 KH |
3076 | /* This function builds a dwarf location descriptor seqeunce from |
3077 | a dw_cfa_location. */ | |
7d9d8943 AM |
3078 | |
3079 | static struct dw_loc_descr_struct * | |
3080 | build_cfa_loc (cfa) | |
3081 | dw_cfa_location *cfa; | |
3082 | { | |
3083 | struct dw_loc_descr_struct *head, *tmp; | |
3084 | ||
3085 | if (cfa->indirect == 0) | |
3086 | abort (); | |
3087 | ||
3088 | if (cfa->base_offset) | |
f299afab HPN |
3089 | { |
3090 | if (cfa->reg <= 31) | |
3091 | head = new_loc_descr (DW_OP_breg0 + cfa->reg, cfa->base_offset, 0); | |
3092 | else | |
3093 | head = new_loc_descr (DW_OP_bregx, cfa->reg, cfa->base_offset); | |
3094 | } | |
3095 | else if (cfa->reg <= 31) | |
7d9d8943 | 3096 | head = new_loc_descr (DW_OP_reg0 + cfa->reg, 0, 0); |
f299afab HPN |
3097 | else |
3098 | head = new_loc_descr (DW_OP_regx, cfa->reg, 0); | |
7d9d8943 AM |
3099 | head->dw_loc_oprnd1.val_class = dw_val_class_const; |
3100 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
3101 | add_loc_descr (&head, tmp); | |
3102 | if (cfa->offset != 0) | |
3103 | { | |
3104 | tmp = new_loc_descr (DW_OP_plus_uconst, cfa->offset, 0); | |
3105 | add_loc_descr (&head, tmp); | |
3106 | } | |
3107 | return head; | |
3108 | } | |
3109 | ||
556273e0 | 3110 | /* This function fills in aa dw_cfa_location structure from a |
7d9d8943 AM |
3111 | dwarf location descriptor sequence. */ |
3112 | ||
3113 | static void | |
3114 | get_cfa_from_loc_descr (cfa, loc) | |
3115 | dw_cfa_location *cfa; | |
556273e0 | 3116 | struct dw_loc_descr_struct *loc; |
7d9d8943 | 3117 | { |
556273e0 | 3118 | struct dw_loc_descr_struct *ptr; |
7d9d8943 AM |
3119 | cfa->offset = 0; |
3120 | cfa->base_offset = 0; | |
3121 | cfa->indirect = 0; | |
3122 | cfa->reg = -1; | |
3123 | ||
3124 | for (ptr = loc; ptr != NULL; ptr = ptr->dw_loc_next) | |
3125 | { | |
3126 | enum dwarf_location_atom op = ptr->dw_loc_opc; | |
3127 | switch (op) | |
556273e0 | 3128 | { |
7d9d8943 AM |
3129 | case DW_OP_reg0: |
3130 | case DW_OP_reg1: | |
3131 | case DW_OP_reg2: | |
3132 | case DW_OP_reg3: | |
3133 | case DW_OP_reg4: | |
3134 | case DW_OP_reg5: | |
3135 | case DW_OP_reg6: | |
3136 | case DW_OP_reg7: | |
3137 | case DW_OP_reg8: | |
3138 | case DW_OP_reg9: | |
3139 | case DW_OP_reg10: | |
3140 | case DW_OP_reg11: | |
3141 | case DW_OP_reg12: | |
3142 | case DW_OP_reg13: | |
3143 | case DW_OP_reg14: | |
3144 | case DW_OP_reg15: | |
3145 | case DW_OP_reg16: | |
3146 | case DW_OP_reg17: | |
3147 | case DW_OP_reg18: | |
3148 | case DW_OP_reg19: | |
3149 | case DW_OP_reg20: | |
3150 | case DW_OP_reg21: | |
3151 | case DW_OP_reg22: | |
3152 | case DW_OP_reg23: | |
3153 | case DW_OP_reg24: | |
3154 | case DW_OP_reg25: | |
3155 | case DW_OP_reg26: | |
3156 | case DW_OP_reg27: | |
3157 | case DW_OP_reg28: | |
3158 | case DW_OP_reg29: | |
3159 | case DW_OP_reg30: | |
3160 | case DW_OP_reg31: | |
3161 | cfa->reg = op - DW_OP_reg0; | |
3162 | break; | |
3163 | case DW_OP_regx: | |
3164 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
3165 | break; | |
3166 | case DW_OP_breg0: | |
3167 | case DW_OP_breg1: | |
3168 | case DW_OP_breg2: | |
3169 | case DW_OP_breg3: | |
3170 | case DW_OP_breg4: | |
3171 | case DW_OP_breg5: | |
3172 | case DW_OP_breg6: | |
3173 | case DW_OP_breg7: | |
3174 | case DW_OP_breg8: | |
3175 | case DW_OP_breg9: | |
3176 | case DW_OP_breg10: | |
3177 | case DW_OP_breg11: | |
3178 | case DW_OP_breg12: | |
3179 | case DW_OP_breg13: | |
3180 | case DW_OP_breg14: | |
3181 | case DW_OP_breg15: | |
3182 | case DW_OP_breg16: | |
3183 | case DW_OP_breg17: | |
3184 | case DW_OP_breg18: | |
3185 | case DW_OP_breg19: | |
3186 | case DW_OP_breg20: | |
3187 | case DW_OP_breg21: | |
3188 | case DW_OP_breg22: | |
3189 | case DW_OP_breg23: | |
3190 | case DW_OP_breg24: | |
3191 | case DW_OP_breg25: | |
3192 | case DW_OP_breg26: | |
3193 | case DW_OP_breg27: | |
3194 | case DW_OP_breg28: | |
3195 | case DW_OP_breg29: | |
3196 | case DW_OP_breg30: | |
3197 | case DW_OP_breg31: | |
3198 | cfa->reg = op - DW_OP_breg0; | |
3199 | cfa->base_offset = ptr->dw_loc_oprnd1.v.val_int; | |
3200 | break; | |
3201 | case DW_OP_bregx: | |
3202 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
3203 | cfa->base_offset = ptr->dw_loc_oprnd2.v.val_int; | |
3204 | break; | |
3205 | case DW_OP_deref: | |
3206 | cfa->indirect = 1; | |
3207 | break; | |
3208 | case DW_OP_plus_uconst: | |
556273e0 | 3209 | cfa->offset = ptr->dw_loc_oprnd1.v.val_unsigned; |
7d9d8943 AM |
3210 | break; |
3211 | default: | |
400500c4 RK |
3212 | internal_error ("DW_LOC_OP %s not implememnted\n", |
3213 | dwarf_stack_op_name (ptr->dw_loc_opc)); | |
7d9d8943 AM |
3214 | } |
3215 | } | |
3216 | } | |
3217 | #endif /* .debug_frame support */ | |
3218 | \f | |
3219 | /* And now, the support for symbolic debugging information. */ | |
3220 | #ifdef DWARF2_DEBUGGING_INFO | |
3221 | ||
3222 | /* NOTE: In the comments in this file, many references are made to | |
3223 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
3224 | throughout the remainder of this file. */ | |
3225 | ||
3226 | /* An internal representation of the DWARF output is built, and then | |
3227 | walked to generate the DWARF debugging info. The walk of the internal | |
3228 | representation is done after the entire program has been compiled. | |
3229 | The types below are used to describe the internal representation. */ | |
3230 | ||
3231 | /* Various DIE's use offsets relative to the beginning of the | |
3232 | .debug_info section to refer to each other. */ | |
3233 | ||
3234 | typedef long int dw_offset; | |
3235 | ||
3236 | /* Define typedefs here to avoid circular dependencies. */ | |
3237 | ||
3238 | typedef struct dw_attr_struct *dw_attr_ref; | |
3239 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
3240 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
3241 | typedef struct pubname_struct *pubname_ref; | |
3242 | typedef dw_die_ref *arange_ref; | |
3243 | ||
3244 | /* Each entry in the line_info_table maintains the file and | |
3245 | line number associated with the label generated for that | |
3246 | entry. The label gives the PC value associated with | |
3247 | the line number entry. */ | |
3248 | ||
3249 | typedef struct dw_line_info_struct | |
3250 | { | |
3251 | unsigned long dw_file_num; | |
3252 | unsigned long dw_line_num; | |
3253 | } | |
3254 | dw_line_info_entry; | |
3255 | ||
3256 | /* Line information for functions in separate sections; each one gets its | |
3257 | own sequence. */ | |
3258 | typedef struct dw_separate_line_info_struct | |
3259 | { | |
3260 | unsigned long dw_file_num; | |
3261 | unsigned long dw_line_num; | |
3262 | unsigned long function; | |
3263 | } | |
3264 | dw_separate_line_info_entry; | |
3265 | ||
3266 | /* Each DIE attribute has a field specifying the attribute kind, | |
3267 | a link to the next attribute in the chain, and an attribute value. | |
3268 | Attributes are typically linked below the DIE they modify. */ | |
3269 | ||
3270 | typedef struct dw_attr_struct | |
3271 | { | |
3272 | enum dwarf_attribute dw_attr; | |
3273 | dw_attr_ref dw_attr_next; | |
3274 | dw_val_node dw_attr_val; | |
3275 | } | |
3276 | dw_attr_node; | |
3277 | ||
3278 | /* The Debugging Information Entry (DIE) structure */ | |
3279 | ||
3280 | typedef struct die_struct | |
3281 | { | |
3282 | enum dwarf_tag die_tag; | |
881c6935 | 3283 | char *die_symbol; |
7d9d8943 AM |
3284 | dw_attr_ref die_attr; |
3285 | dw_die_ref die_parent; | |
3286 | dw_die_ref die_child; | |
3287 | dw_die_ref die_sib; | |
3288 | dw_offset die_offset; | |
3289 | unsigned long die_abbrev; | |
1bfb5f8f | 3290 | int die_mark; |
7d9d8943 AM |
3291 | } |
3292 | die_node; | |
3293 | ||
3294 | /* The pubname structure */ | |
3295 | ||
3296 | typedef struct pubname_struct | |
3297 | { | |
3298 | dw_die_ref die; | |
556273e0 | 3299 | char *name; |
7d9d8943 AM |
3300 | } |
3301 | pubname_entry; | |
3302 | ||
3303 | /* The limbo die list structure. */ | |
3304 | typedef struct limbo_die_struct | |
3305 | { | |
3306 | dw_die_ref die; | |
3307 | struct limbo_die_struct *next; | |
3308 | } | |
3309 | limbo_die_node; | |
3310 | ||
3311 | /* How to start an assembler comment. */ | |
3312 | #ifndef ASM_COMMENT_START | |
3313 | #define ASM_COMMENT_START ";#" | |
3314 | #endif | |
3315 | ||
3316 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
3317 | implicitly generated for a tagged type. | |
3318 | ||
3319 | Note that unlike the gcc front end (which generates a NULL named | |
3320 | TYPE_DECL node for each complete tagged type, each array type, and | |
3321 | each function type node created) the g++ front end generates a | |
3322 | _named_ TYPE_DECL node for each tagged type node created. | |
3323 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
3324 | generate a DW_TAG_typedef DIE for them. */ | |
3325 | ||
3326 | #define TYPE_DECL_IS_STUB(decl) \ | |
3327 | (DECL_NAME (decl) == NULL_TREE \ | |
3328 | || (DECL_ARTIFICIAL (decl) \ | |
3329 | && is_tagged_type (TREE_TYPE (decl)) \ | |
3330 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ | |
3331 | /* This is necessary for stub decls that \ | |
3332 | appear in nested inline functions. */ \ | |
3333 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
3334 | && (decl_ultimate_origin (decl) \ | |
3335 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3336 | ||
3337 | /* Information concerning the compilation unit's programming | |
3338 | language, and compiler version. */ | |
3339 | ||
3340 | extern int flag_traditional; | |
3341 | ||
3342 | /* Fixed size portion of the DWARF compilation unit header. */ | |
3343 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
3344 | ||
3345 | /* Fixed size portion of debugging line information prolog. */ | |
3346 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
3347 | ||
3348 | /* Fixed size portion of public names info. */ | |
3349 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
3350 | ||
3351 | /* Fixed size portion of the address range info. */ | |
3352 | #define DWARF_ARANGES_HEADER_SIZE \ | |
3353 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \ | |
3354 | - DWARF_OFFSET_SIZE) | |
3355 | ||
3356 | /* Size of padding portion in the address range info. It must be | |
3357 | aligned to twice the pointer size. */ | |
3358 | #define DWARF_ARANGES_PAD_SIZE \ | |
3359 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \ | |
3360 | - (2 * DWARF_OFFSET_SIZE + 4)) | |
3361 | ||
9d147085 | 3362 | /* Use assembler line directives if available. */ |
7d9d8943 | 3363 | #ifndef DWARF2_ASM_LINE_DEBUG_INFO |
9d147085 RH |
3364 | #ifdef HAVE_AS_DWARF2_DEBUG_LINE |
3365 | #define DWARF2_ASM_LINE_DEBUG_INFO 1 | |
3366 | #else | |
7d9d8943 AM |
3367 | #define DWARF2_ASM_LINE_DEBUG_INFO 0 |
3368 | #endif | |
9d147085 | 3369 | #endif |
7d9d8943 AM |
3370 | |
3371 | /* Define the architecture-dependent minimum instruction length (in bytes). | |
3372 | In this implementation of DWARF, this field is used for information | |
3373 | purposes only. Since GCC generates assembly language, we have | |
3374 | no a priori knowledge of how many instruction bytes are generated | |
3375 | for each source line, and therefore can use only the DW_LNE_set_address | |
3376 | and DW_LNS_fixed_advance_pc line information commands. */ | |
3377 | ||
3378 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
3379 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
3380 | #endif | |
3381 | ||
3382 | /* Minimum line offset in a special line info. opcode. | |
3383 | This value was chosen to give a reasonable range of values. */ | |
3384 | #define DWARF_LINE_BASE -10 | |
3385 | ||
3386 | /* First special line opcde - leave room for the standard opcodes. */ | |
3387 | #define DWARF_LINE_OPCODE_BASE 10 | |
3388 | ||
3389 | /* Range of line offsets in a special line info. opcode. */ | |
3390 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
3391 | ||
3392 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
3393 | In the present implementation, we do not mark any lines as | |
3394 | the beginning of a source statement, because that information | |
3395 | is not made available by the GCC front-end. */ | |
3396 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
3397 | ||
3398 | /* This location is used by calc_die_sizes() to keep track | |
3399 | the offset of each DIE within the .debug_info section. */ | |
3400 | static unsigned long next_die_offset; | |
3401 | ||
3402 | /* Record the root of the DIE's built for the current compilation unit. */ | |
3403 | static dw_die_ref comp_unit_die; | |
3404 | ||
3405 | /* A list of DIEs with a NULL parent waiting to be relocated. */ | |
3406 | static limbo_die_node *limbo_die_list = 0; | |
3407 | ||
2e18bbae RH |
3408 | /* Structure used by lookup_filename to manage sets of filenames. */ |
3409 | struct file_table | |
3410 | { | |
3411 | char **table; | |
3412 | unsigned allocated; | |
3413 | unsigned in_use; | |
3414 | unsigned last_lookup_index; | |
3415 | }; | |
7d9d8943 AM |
3416 | |
3417 | /* Size (in elements) of increments by which we may expand the filename | |
3418 | table. */ | |
3419 | #define FILE_TABLE_INCREMENT 64 | |
3420 | ||
2e18bbae RH |
3421 | /* Filenames referenced by declarations this compilation unit. */ |
3422 | static struct file_table decl_file_table; | |
3423 | ||
3424 | /* Filenames referenced by line numbers in this compilation unit. */ | |
3425 | static struct file_table line_file_table; | |
3426 | ||
7d9d8943 AM |
3427 | /* Local pointer to the name of the main input file. Initialized in |
3428 | dwarf2out_init. */ | |
3429 | static const char *primary_filename; | |
3430 | ||
3431 | /* A pointer to the base of a table of references to DIE's that describe | |
3432 | declarations. The table is indexed by DECL_UID() which is a unique | |
3433 | number identifying each decl. */ | |
3434 | static dw_die_ref *decl_die_table; | |
3435 | ||
3436 | /* Number of elements currently allocated for the decl_die_table. */ | |
3437 | static unsigned decl_die_table_allocated; | |
3438 | ||
3439 | /* Number of elements in decl_die_table currently in use. */ | |
3440 | static unsigned decl_die_table_in_use; | |
3441 | ||
3442 | /* Size (in elements) of increments by which we may expand the | |
3443 | decl_die_table. */ | |
3444 | #define DECL_DIE_TABLE_INCREMENT 256 | |
3445 | ||
3446 | /* A pointer to the base of a table of references to declaration | |
3447 | scopes. This table is a display which tracks the nesting | |
3448 | of declaration scopes at the current scope and containing | |
3449 | scopes. This table is used to find the proper place to | |
3450 | define type declaration DIE's. */ | |
3451 | static tree *decl_scope_table; | |
3452 | ||
3453 | /* Number of elements currently allocated for the decl_scope_table. */ | |
3454 | static int decl_scope_table_allocated; | |
3455 | ||
3456 | /* Current level of nesting of declaration scopes. */ | |
3457 | static int decl_scope_depth; | |
3458 | ||
3459 | /* Size (in elements) of increments by which we may expand the | |
3460 | decl_scope_table. */ | |
3461 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
3462 | ||
3463 | /* A pointer to the base of a list of references to DIE's that | |
3464 | are uniquely identified by their tag, presence/absence of | |
3465 | children DIE's, and list of attribute/value pairs. */ | |
3466 | static dw_die_ref *abbrev_die_table; | |
3467 | ||
3468 | /* Number of elements currently allocated for abbrev_die_table. */ | |
3469 | static unsigned abbrev_die_table_allocated; | |
3470 | ||
3471 | /* Number of elements in type_die_table currently in use. */ | |
3472 | static unsigned abbrev_die_table_in_use; | |
3473 | ||
3474 | /* Size (in elements) of increments by which we may expand the | |
3475 | abbrev_die_table. */ | |
3476 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
3477 | ||
3478 | /* A pointer to the base of a table that contains line information | |
3479 | for each source code line in .text in the compilation unit. */ | |
3480 | static dw_line_info_ref line_info_table; | |
3481 | ||
3482 | /* Number of elements currently allocated for line_info_table. */ | |
3483 | static unsigned line_info_table_allocated; | |
3484 | ||
3485 | /* Number of elements in separate_line_info_table currently in use. */ | |
3486 | static unsigned separate_line_info_table_in_use; | |
3487 | ||
3488 | /* A pointer to the base of a table that contains line information | |
3489 | for each source code line outside of .text in the compilation unit. */ | |
3490 | static dw_separate_line_info_ref separate_line_info_table; | |
3491 | ||
3492 | /* Number of elements currently allocated for separate_line_info_table. */ | |
3493 | static unsigned separate_line_info_table_allocated; | |
3494 | ||
3495 | /* Number of elements in line_info_table currently in use. */ | |
3496 | static unsigned line_info_table_in_use; | |
3497 | ||
3498 | /* Size (in elements) of increments by which we may expand the | |
3499 | line_info_table. */ | |
3500 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
3501 | ||
3502 | /* A pointer to the base of a table that contains a list of publicly | |
3503 | accessible names. */ | |
3504 | static pubname_ref pubname_table; | |
3505 | ||
3506 | /* Number of elements currently allocated for pubname_table. */ | |
3507 | static unsigned pubname_table_allocated; | |
3508 | ||
3509 | /* Number of elements in pubname_table currently in use. */ | |
3510 | static unsigned pubname_table_in_use; | |
3511 | ||
3512 | /* Size (in elements) of increments by which we may expand the | |
3513 | pubname_table. */ | |
3514 | #define PUBNAME_TABLE_INCREMENT 64 | |
3515 | ||
3516 | /* A pointer to the base of a table that contains a list of publicly | |
3517 | accessible names. */ | |
3518 | static arange_ref arange_table; | |
3519 | ||
3520 | /* Number of elements currently allocated for arange_table. */ | |
3521 | static unsigned arange_table_allocated; | |
3522 | ||
3523 | /* Number of elements in arange_table currently in use. */ | |
3524 | static unsigned arange_table_in_use; | |
3525 | ||
3526 | /* Size (in elements) of increments by which we may expand the | |
3527 | arange_table. */ | |
3528 | #define ARANGE_TABLE_INCREMENT 64 | |
3529 | ||
3530 | /* A pointer to the base of a list of incomplete types which might be | |
3531 | completed at some later time. */ | |
3532 | ||
3533 | static tree *incomplete_types_list; | |
3534 | ||
3535 | /* Number of elements currently allocated for the incomplete_types_list. */ | |
3536 | static unsigned incomplete_types_allocated; | |
3537 | ||
3538 | /* Number of elements of incomplete_types_list currently in use. */ | |
3539 | static unsigned incomplete_types; | |
3540 | ||
3541 | /* Size (in elements) of increments by which we may expand the incomplete | |
3542 | types list. Actually, a single hunk of space of this size should | |
3543 | be enough for most typical programs. */ | |
3544 | #define INCOMPLETE_TYPES_INCREMENT 64 | |
3545 | ||
3546 | /* Record whether the function being analyzed contains inlined functions. */ | |
3547 | static int current_function_has_inlines; | |
3548 | #if 0 && defined (MIPS_DEBUGGING_INFO) | |
3549 | static int comp_unit_has_inlines; | |
3550 | #endif | |
3551 | ||
3552 | /* Array of RTXes referenced by the debugging information, which therefore | |
3553 | must be kept around forever. We do this rather than perform GC on | |
3554 | the dwarf info because almost all of the dwarf info lives forever, and | |
3555 | it's easier to support non-GC frontends this way. */ | |
3556 | static varray_type used_rtx_varray; | |
3557 | ||
3558 | /* Forward declarations for functions defined in this file. */ | |
3559 | ||
3560 | static int is_pseudo_reg PARAMS ((rtx)); | |
3561 | static tree type_main_variant PARAMS ((tree)); | |
3562 | static int is_tagged_type PARAMS ((tree)); | |
3563 | static const char *dwarf_tag_name PARAMS ((unsigned)); | |
3564 | static const char *dwarf_attr_name PARAMS ((unsigned)); | |
3565 | static const char *dwarf_form_name PARAMS ((unsigned)); | |
3566 | #if 0 | |
3567 | static const char *dwarf_type_encoding_name PARAMS ((unsigned)); | |
3568 | #endif | |
3569 | static tree decl_ultimate_origin PARAMS ((tree)); | |
3570 | static tree block_ultimate_origin PARAMS ((tree)); | |
3571 | static tree decl_class_context PARAMS ((tree)); | |
3572 | static void add_dwarf_attr PARAMS ((dw_die_ref, dw_attr_ref)); | |
3573 | static void add_AT_flag PARAMS ((dw_die_ref, | |
3574 | enum dwarf_attribute, | |
3575 | unsigned)); | |
3576 | static void add_AT_int PARAMS ((dw_die_ref, | |
3577 | enum dwarf_attribute, long)); | |
3578 | static void add_AT_unsigned PARAMS ((dw_die_ref, | |
3579 | enum dwarf_attribute, | |
3580 | unsigned long)); | |
3581 | static void add_AT_long_long PARAMS ((dw_die_ref, | |
3582 | enum dwarf_attribute, | |
3583 | unsigned long, | |
3584 | unsigned long)); | |
3585 | static void add_AT_float PARAMS ((dw_die_ref, | |
3586 | enum dwarf_attribute, | |
3587 | unsigned, long *)); | |
3588 | static void add_AT_string PARAMS ((dw_die_ref, | |
3589 | enum dwarf_attribute, | |
3590 | const char *)); | |
3591 | static void add_AT_die_ref PARAMS ((dw_die_ref, | |
3592 | enum dwarf_attribute, | |
3593 | dw_die_ref)); | |
3594 | static void add_AT_fde_ref PARAMS ((dw_die_ref, | |
3595 | enum dwarf_attribute, | |
3596 | unsigned)); | |
3597 | static void add_AT_loc PARAMS ((dw_die_ref, | |
3598 | enum dwarf_attribute, | |
3599 | dw_loc_descr_ref)); | |
3600 | static void add_AT_addr PARAMS ((dw_die_ref, | |
3601 | enum dwarf_attribute, | |
3602 | rtx)); | |
3603 | static void add_AT_lbl_id PARAMS ((dw_die_ref, | |
3604 | enum dwarf_attribute, | |
3605 | const char *)); | |
3606 | static void add_AT_lbl_offset PARAMS ((dw_die_ref, | |
3607 | enum dwarf_attribute, | |
3608 | const char *)); | |
3609 | static dw_attr_ref get_AT PARAMS ((dw_die_ref, | |
3610 | enum dwarf_attribute)); | |
3611 | static const char *get_AT_low_pc PARAMS ((dw_die_ref)); | |
3612 | static const char *get_AT_hi_pc PARAMS ((dw_die_ref)); | |
3613 | static const char *get_AT_string PARAMS ((dw_die_ref, | |
3614 | enum dwarf_attribute)); | |
3615 | static int get_AT_flag PARAMS ((dw_die_ref, | |
3616 | enum dwarf_attribute)); | |
3617 | static unsigned get_AT_unsigned PARAMS ((dw_die_ref, | |
3618 | enum dwarf_attribute)); | |
3619 | static inline dw_die_ref get_AT_ref PARAMS ((dw_die_ref, | |
3620 | enum dwarf_attribute)); | |
3621 | static int is_c_family PARAMS ((void)); | |
28985b81 | 3622 | static int is_java PARAMS ((void)); |
7d9d8943 AM |
3623 | static int is_fortran PARAMS ((void)); |
3624 | static void remove_AT PARAMS ((dw_die_ref, | |
3625 | enum dwarf_attribute)); | |
3626 | static void remove_children PARAMS ((dw_die_ref)); | |
3627 | static void add_child_die PARAMS ((dw_die_ref, dw_die_ref)); | |
3628 | static dw_die_ref new_die PARAMS ((enum dwarf_tag, dw_die_ref)); | |
3629 | static dw_die_ref lookup_type_die PARAMS ((tree)); | |
3630 | static void equate_type_number_to_die PARAMS ((tree, dw_die_ref)); | |
3631 | static dw_die_ref lookup_decl_die PARAMS ((tree)); | |
3632 | static void equate_decl_number_to_die PARAMS ((tree, dw_die_ref)); | |
3633 | static void print_spaces PARAMS ((FILE *)); | |
3634 | static void print_die PARAMS ((dw_die_ref, FILE *)); | |
3635 | static void print_dwarf_line_table PARAMS ((FILE *)); | |
881c6935 JM |
3636 | static void reverse_die_lists PARAMS ((dw_die_ref)); |
3637 | static void reverse_all_dies PARAMS ((dw_die_ref)); | |
3638 | static dw_die_ref push_new_compile_unit PARAMS ((dw_die_ref, dw_die_ref)); | |
3639 | static dw_die_ref pop_compile_unit PARAMS ((dw_die_ref)); | |
3640 | static void loc_checksum PARAMS ((dw_loc_descr_ref, struct md5_ctx *)); | |
3641 | static void attr_checksum PARAMS ((dw_attr_ref, struct md5_ctx *)); | |
3642 | static void die_checksum PARAMS ((dw_die_ref, struct md5_ctx *)); | |
3643 | static void compute_section_prefix PARAMS ((dw_die_ref)); | |
3644 | static int is_type_die PARAMS ((dw_die_ref)); | |
3645 | static int is_comdat_die PARAMS ((dw_die_ref)); | |
3646 | static int is_symbol_die PARAMS ((dw_die_ref)); | |
3647 | static char *gen_internal_sym PARAMS ((void)); | |
3648 | static void assign_symbol_names PARAMS ((dw_die_ref)); | |
3649 | static void break_out_includes PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3650 | static void add_sibling_attributes PARAMS ((dw_die_ref)); |
3651 | static void build_abbrev_table PARAMS ((dw_die_ref)); | |
3652 | static unsigned long size_of_string PARAMS ((const char *)); | |
3653 | static int constant_size PARAMS ((long unsigned)); | |
3654 | static unsigned long size_of_die PARAMS ((dw_die_ref)); | |
3655 | static void calc_die_sizes PARAMS ((dw_die_ref)); | |
1bfb5f8f JM |
3656 | static void mark_dies PARAMS ((dw_die_ref)); |
3657 | static void unmark_dies PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3658 | static unsigned long size_of_line_prolog PARAMS ((void)); |
3659 | static unsigned long size_of_pubnames PARAMS ((void)); | |
3660 | static unsigned long size_of_aranges PARAMS ((void)); | |
3661 | static enum dwarf_form value_format PARAMS ((dw_attr_ref)); | |
3662 | static void output_value_format PARAMS ((dw_attr_ref)); | |
3663 | static void output_abbrev_section PARAMS ((void)); | |
881c6935 JM |
3664 | static void output_die_symbol PARAMS ((dw_die_ref)); |
3665 | static void output_symbolic_ref PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3666 | static void output_die PARAMS ((dw_die_ref)); |
3667 | static void output_compilation_unit_header PARAMS ((void)); | |
881c6935 | 3668 | static void output_comp_unit PARAMS ((dw_die_ref)); |
7d9d8943 AM |
3669 | static const char *dwarf2_name PARAMS ((tree, int)); |
3670 | static void add_pubname PARAMS ((tree, dw_die_ref)); | |
3671 | static void output_pubnames PARAMS ((void)); | |
3672 | static void add_arange PARAMS ((tree, dw_die_ref)); | |
3673 | static void output_aranges PARAMS ((void)); | |
3674 | static void output_line_info PARAMS ((void)); | |
0b34cf1e | 3675 | static void output_file_names PARAMS ((void)); |
7d9d8943 AM |
3676 | static dw_die_ref base_type_die PARAMS ((tree)); |
3677 | static tree root_type PARAMS ((tree)); | |
3678 | static int is_base_type PARAMS ((tree)); | |
3679 | static dw_die_ref modified_type_die PARAMS ((tree, int, int, dw_die_ref)); | |
3680 | static int type_is_enum PARAMS ((tree)); | |
3681 | static unsigned int reg_number PARAMS ((rtx)); | |
3682 | static dw_loc_descr_ref reg_loc_descriptor PARAMS ((rtx)); | |
d8041cc8 | 3683 | static dw_loc_descr_ref int_loc_descriptor PARAMS ((HOST_WIDE_INT)); |
7d9d8943 AM |
3684 | static dw_loc_descr_ref based_loc_descr PARAMS ((unsigned, long)); |
3685 | static int is_based_loc PARAMS ((rtx)); | |
3686 | static dw_loc_descr_ref mem_loc_descriptor PARAMS ((rtx, enum machine_mode mode)); | |
3687 | static dw_loc_descr_ref concat_loc_descriptor PARAMS ((rtx, rtx)); | |
3688 | static dw_loc_descr_ref loc_descriptor PARAMS ((rtx)); | |
d8041cc8 | 3689 | static dw_loc_descr_ref loc_descriptor_from_tree PARAMS ((tree, int)); |
7d9d8943 AM |
3690 | static HOST_WIDE_INT ceiling PARAMS ((HOST_WIDE_INT, unsigned int)); |
3691 | static tree field_type PARAMS ((tree)); | |
3692 | static unsigned int simple_type_align_in_bits PARAMS ((tree)); | |
5f446d21 | 3693 | static unsigned int simple_decl_align_in_bits PARAMS ((tree)); |
7d9d8943 AM |
3694 | static unsigned HOST_WIDE_INT simple_type_size_in_bits PARAMS ((tree)); |
3695 | static HOST_WIDE_INT field_byte_offset PARAMS ((tree)); | |
3696 | static void add_AT_location_description PARAMS ((dw_die_ref, | |
3697 | enum dwarf_attribute, rtx)); | |
3698 | static void add_data_member_location_attribute PARAMS ((dw_die_ref, tree)); | |
3699 | static void add_const_value_attribute PARAMS ((dw_die_ref, rtx)); | |
d8041cc8 | 3700 | static rtx rtl_for_decl_location PARAMS ((tree)); |
7d9d8943 | 3701 | static void add_location_or_const_value_attribute PARAMS ((dw_die_ref, tree)); |
1bfb5f8f | 3702 | static void tree_add_const_value_attribute PARAMS ((dw_die_ref, tree)); |
7d9d8943 AM |
3703 | static void add_name_attribute PARAMS ((dw_die_ref, const char *)); |
3704 | static void add_bound_info PARAMS ((dw_die_ref, | |
3705 | enum dwarf_attribute, tree)); | |
3706 | static void add_subscript_info PARAMS ((dw_die_ref, tree)); | |
3707 | static void add_byte_size_attribute PARAMS ((dw_die_ref, tree)); | |
3708 | static void add_bit_offset_attribute PARAMS ((dw_die_ref, tree)); | |
3709 | static void add_bit_size_attribute PARAMS ((dw_die_ref, tree)); | |
3710 | static void add_prototyped_attribute PARAMS ((dw_die_ref, tree)); | |
3711 | static void add_abstract_origin_attribute PARAMS ((dw_die_ref, tree)); | |
3712 | static void add_pure_or_virtual_attribute PARAMS ((dw_die_ref, tree)); | |
3713 | static void add_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
3714 | static void add_name_and_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
3715 | static void push_decl_scope PARAMS ((tree)); | |
3716 | static dw_die_ref scope_die_for PARAMS ((tree, dw_die_ref)); | |
3717 | static void pop_decl_scope PARAMS ((void)); | |
3718 | static void add_type_attribute PARAMS ((dw_die_ref, tree, int, int, | |
3719 | dw_die_ref)); | |
3720 | static const char *type_tag PARAMS ((tree)); | |
3721 | static tree member_declared_type PARAMS ((tree)); | |
3722 | #if 0 | |
3723 | static const char *decl_start_label PARAMS ((tree)); | |
3724 | #endif | |
3725 | static void gen_array_type_die PARAMS ((tree, dw_die_ref)); | |
3726 | static void gen_set_type_die PARAMS ((tree, dw_die_ref)); | |
3727 | #if 0 | |
3728 | static void gen_entry_point_die PARAMS ((tree, dw_die_ref)); | |
3729 | #endif | |
3730 | static void gen_inlined_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
3731 | static void gen_inlined_structure_type_die PARAMS ((tree, dw_die_ref)); | |
3732 | static void gen_inlined_union_type_die PARAMS ((tree, dw_die_ref)); | |
3733 | static void gen_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
3734 | static dw_die_ref gen_formal_parameter_die PARAMS ((tree, dw_die_ref)); | |
3735 | static void gen_unspecified_parameters_die PARAMS ((tree, dw_die_ref)); | |
3736 | static void gen_formal_types_die PARAMS ((tree, dw_die_ref)); | |
3737 | static void gen_subprogram_die PARAMS ((tree, dw_die_ref)); | |
3738 | static void gen_variable_die PARAMS ((tree, dw_die_ref)); | |
3739 | static void gen_label_die PARAMS ((tree, dw_die_ref)); | |
3740 | static void gen_lexical_block_die PARAMS ((tree, dw_die_ref, int)); | |
3741 | static void gen_inlined_subroutine_die PARAMS ((tree, dw_die_ref, int)); | |
3742 | static void gen_field_die PARAMS ((tree, dw_die_ref)); | |
3743 | static void gen_ptr_to_mbr_type_die PARAMS ((tree, dw_die_ref)); | |
3744 | static dw_die_ref gen_compile_unit_die PARAMS ((const char *)); | |
3745 | static void gen_string_type_die PARAMS ((tree, dw_die_ref)); | |
3746 | static void gen_inheritance_die PARAMS ((tree, dw_die_ref)); | |
3747 | static void gen_member_die PARAMS ((tree, dw_die_ref)); | |
3748 | static void gen_struct_or_union_type_die PARAMS ((tree, dw_die_ref)); | |
3749 | static void gen_subroutine_type_die PARAMS ((tree, dw_die_ref)); | |
3750 | static void gen_typedef_die PARAMS ((tree, dw_die_ref)); | |
3751 | static void gen_type_die PARAMS ((tree, dw_die_ref)); | |
3752 | static void gen_tagged_type_instantiation_die PARAMS ((tree, dw_die_ref)); | |
3753 | static void gen_block_die PARAMS ((tree, dw_die_ref, int)); | |
3754 | static void decls_for_scope PARAMS ((tree, dw_die_ref, int)); | |
3755 | static int is_redundant_typedef PARAMS ((tree)); | |
3756 | static void gen_decl_die PARAMS ((tree, dw_die_ref)); | |
2e18bbae RH |
3757 | static unsigned lookup_filename PARAMS ((struct file_table *, |
3758 | const char *)); | |
3759 | static void init_file_table PARAMS ((struct file_table *)); | |
7d9d8943 AM |
3760 | static void add_incomplete_type PARAMS ((tree)); |
3761 | static void retry_incomplete_types PARAMS ((void)); | |
3762 | static void gen_type_die_for_member PARAMS ((tree, tree, dw_die_ref)); | |
3763 | static void gen_abstract_function PARAMS ((tree)); | |
3764 | static rtx save_rtx PARAMS ((rtx)); | |
3765 | static void splice_child_die PARAMS ((dw_die_ref, dw_die_ref)); | |
fc608b03 | 3766 | static int file_info_cmp PARAMS ((const void *, const void *)); |
7d9d8943 AM |
3767 | |
3768 | /* Section names used to hold DWARF debugging information. */ | |
3769 | #ifndef DEBUG_INFO_SECTION | |
3770 | #define DEBUG_INFO_SECTION ".debug_info" | |
3771 | #endif | |
3772 | #ifndef ABBREV_SECTION | |
3773 | #define ABBREV_SECTION ".debug_abbrev" | |
3774 | #endif | |
3775 | #ifndef ARANGES_SECTION | |
3776 | #define ARANGES_SECTION ".debug_aranges" | |
3777 | #endif | |
3778 | #ifndef DW_MACINFO_SECTION | |
3779 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
3780 | #endif | |
3781 | #ifndef DEBUG_LINE_SECTION | |
3782 | #define DEBUG_LINE_SECTION ".debug_line" | |
3783 | #endif | |
3784 | #ifndef LOC_SECTION | |
3785 | #define LOC_SECTION ".debug_loc" | |
3786 | #endif | |
3787 | #ifndef PUBNAMES_SECTION | |
3788 | #define PUBNAMES_SECTION ".debug_pubnames" | |
3789 | #endif | |
3790 | #ifndef STR_SECTION | |
3791 | #define STR_SECTION ".debug_str" | |
3792 | #endif | |
3793 | ||
3794 | /* Standard ELF section names for compiled code and data. */ | |
3795 | #ifndef TEXT_SECTION | |
3796 | #define TEXT_SECTION ".text" | |
3797 | #endif | |
3798 | #ifndef DATA_SECTION | |
3799 | #define DATA_SECTION ".data" | |
3800 | #endif | |
3801 | #ifndef BSS_SECTION | |
3802 | #define BSS_SECTION ".bss" | |
3803 | #endif | |
3804 | ||
3805 | /* Labels we insert at beginning sections we can reference instead of | |
556273e0 | 3806 | the section names themselves. */ |
7d9d8943 AM |
3807 | |
3808 | #ifndef TEXT_SECTION_LABEL | |
3809 | #define TEXT_SECTION_LABEL "Ltext" | |
3810 | #endif | |
3811 | #ifndef DEBUG_LINE_SECTION_LABEL | |
3812 | #define DEBUG_LINE_SECTION_LABEL "Ldebug_line" | |
3813 | #endif | |
3814 | #ifndef DEBUG_INFO_SECTION_LABEL | |
3815 | #define DEBUG_INFO_SECTION_LABEL "Ldebug_info" | |
3816 | #endif | |
3817 | #ifndef ABBREV_SECTION_LABEL | |
3818 | #define ABBREV_SECTION_LABEL "Ldebug_abbrev" | |
3819 | #endif | |
3820 | ||
7d9d8943 AM |
3821 | /* Definitions of defaults for formats and names of various special |
3822 | (artificial) labels which may be generated within this file (when the -g | |
3823 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
3824 | If necessary, these may be overridden from within the tm.h file, but | |
3825 | typically, overriding these defaults is unnecessary. */ | |
3826 | ||
3827 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3828 | static char text_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3829 | static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3830 | static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3831 | static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3832 | ||
3833 | #ifndef TEXT_END_LABEL | |
3834 | #define TEXT_END_LABEL "Letext" | |
3835 | #endif | |
3836 | #ifndef DATA_END_LABEL | |
3837 | #define DATA_END_LABEL "Ledata" | |
3838 | #endif | |
3839 | #ifndef BSS_END_LABEL | |
3840 | #define BSS_END_LABEL "Lebss" | |
3841 | #endif | |
7d9d8943 AM |
3842 | #ifndef BLOCK_BEGIN_LABEL |
3843 | #define BLOCK_BEGIN_LABEL "LBB" | |
3844 | #endif | |
3845 | #ifndef BLOCK_END_LABEL | |
3846 | #define BLOCK_END_LABEL "LBE" | |
3847 | #endif | |
3848 | #ifndef BODY_BEGIN_LABEL | |
3849 | #define BODY_BEGIN_LABEL "Lbb" | |
3850 | #endif | |
3851 | #ifndef BODY_END_LABEL | |
3852 | #define BODY_END_LABEL "Lbe" | |
3853 | #endif | |
3854 | #ifndef LINE_CODE_LABEL | |
3855 | #define LINE_CODE_LABEL "LM" | |
3856 | #endif | |
3857 | #ifndef SEPARATE_LINE_CODE_LABEL | |
3858 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
3859 | #endif | |
3860 | \f | |
3861 | /* We allow a language front-end to designate a function that is to be | |
3862 | called to "demangle" any name before it it put into a DIE. */ | |
3863 | ||
3864 | static const char *(*demangle_name_func) PARAMS ((const char *)); | |
3865 | ||
3866 | void | |
3867 | dwarf2out_set_demangle_name_func (func) | |
3868 | const char *(*func) PARAMS ((const char *)); | |
3869 | { | |
3870 | demangle_name_func = func; | |
3871 | } | |
3872 | \f | |
3873 | /* Return an rtx like ORIG which lives forever. If we're doing GC, | |
3874 | that means adding it to used_rtx_varray. If not, that means making | |
3875 | a copy on the permanent_obstack. */ | |
3876 | ||
3877 | static rtx | |
3878 | save_rtx (orig) | |
3879 | register rtx orig; | |
3880 | { | |
1f8f4a0b | 3881 | VARRAY_PUSH_RTX (used_rtx_varray, orig); |
7d9d8943 AM |
3882 | |
3883 | return orig; | |
3884 | } | |
3885 | ||
3886 | /* Test if rtl node points to a pseudo register. */ | |
3887 | ||
3888 | static inline int | |
3889 | is_pseudo_reg (rtl) | |
3890 | register rtx rtl; | |
3891 | { | |
3892 | return ((GET_CODE (rtl) == REG && REGNO (rtl) >= FIRST_PSEUDO_REGISTER) | |
3893 | || (GET_CODE (rtl) == SUBREG | |
3894 | && REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER)); | |
3895 | } | |
3896 | ||
3897 | /* Return a reference to a type, with its const and volatile qualifiers | |
3898 | removed. */ | |
3899 | ||
3900 | static inline tree | |
3901 | type_main_variant (type) | |
3902 | register tree type; | |
3903 | { | |
3904 | type = TYPE_MAIN_VARIANT (type); | |
3905 | ||
556273e0 | 3906 | /* There really should be only one main variant among any group of variants |
7d9d8943 AM |
3907 | of a given type (and all of the MAIN_VARIANT values for all members of |
3908 | the group should point to that one type) but sometimes the C front-end | |
3909 | messes this up for array types, so we work around that bug here. */ | |
3910 | ||
3911 | if (TREE_CODE (type) == ARRAY_TYPE) | |
3912 | while (type != TYPE_MAIN_VARIANT (type)) | |
3913 | type = TYPE_MAIN_VARIANT (type); | |
3914 | ||
3915 | return type; | |
3916 | } | |
3917 | ||
3918 | /* Return non-zero if the given type node represents a tagged type. */ | |
3919 | ||
3920 | static inline int | |
3921 | is_tagged_type (type) | |
3922 | register tree type; | |
3923 | { | |
3924 | register enum tree_code code = TREE_CODE (type); | |
3925 | ||
3926 | return (code == RECORD_TYPE || code == UNION_TYPE | |
3927 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
3928 | } | |
3929 | ||
3930 | /* Convert a DIE tag into its string name. */ | |
3931 | ||
3932 | static const char * | |
3933 | dwarf_tag_name (tag) | |
3934 | register unsigned tag; | |
3935 | { | |
3936 | switch (tag) | |
3937 | { | |
3938 | case DW_TAG_padding: | |
3939 | return "DW_TAG_padding"; | |
3940 | case DW_TAG_array_type: | |
3941 | return "DW_TAG_array_type"; | |
3942 | case DW_TAG_class_type: | |
3943 | return "DW_TAG_class_type"; | |
3944 | case DW_TAG_entry_point: | |
3945 | return "DW_TAG_entry_point"; | |
3946 | case DW_TAG_enumeration_type: | |
3947 | return "DW_TAG_enumeration_type"; | |
3948 | case DW_TAG_formal_parameter: | |
3949 | return "DW_TAG_formal_parameter"; | |
3950 | case DW_TAG_imported_declaration: | |
3951 | return "DW_TAG_imported_declaration"; | |
3952 | case DW_TAG_label: | |
3953 | return "DW_TAG_label"; | |
3954 | case DW_TAG_lexical_block: | |
3955 | return "DW_TAG_lexical_block"; | |
3956 | case DW_TAG_member: | |
3957 | return "DW_TAG_member"; | |
3958 | case DW_TAG_pointer_type: | |
3959 | return "DW_TAG_pointer_type"; | |
3960 | case DW_TAG_reference_type: | |
3961 | return "DW_TAG_reference_type"; | |
3962 | case DW_TAG_compile_unit: | |
3963 | return "DW_TAG_compile_unit"; | |
3964 | case DW_TAG_string_type: | |
3965 | return "DW_TAG_string_type"; | |
3966 | case DW_TAG_structure_type: | |
3967 | return "DW_TAG_structure_type"; | |
3968 | case DW_TAG_subroutine_type: | |
3969 | return "DW_TAG_subroutine_type"; | |
3970 | case DW_TAG_typedef: | |
3971 | return "DW_TAG_typedef"; | |
3972 | case DW_TAG_union_type: | |
3973 | return "DW_TAG_union_type"; | |
3974 | case DW_TAG_unspecified_parameters: | |
3975 | return "DW_TAG_unspecified_parameters"; | |
3976 | case DW_TAG_variant: | |
3977 | return "DW_TAG_variant"; | |
3978 | case DW_TAG_common_block: | |
3979 | return "DW_TAG_common_block"; | |
3980 | case DW_TAG_common_inclusion: | |
3981 | return "DW_TAG_common_inclusion"; | |
3982 | case DW_TAG_inheritance: | |
3983 | return "DW_TAG_inheritance"; | |
3984 | case DW_TAG_inlined_subroutine: | |
3985 | return "DW_TAG_inlined_subroutine"; | |
3986 | case DW_TAG_module: | |
3987 | return "DW_TAG_module"; | |
3988 | case DW_TAG_ptr_to_member_type: | |
3989 | return "DW_TAG_ptr_to_member_type"; | |
3990 | case DW_TAG_set_type: | |
3991 | return "DW_TAG_set_type"; | |
3992 | case DW_TAG_subrange_type: | |
3993 | return "DW_TAG_subrange_type"; | |
3994 | case DW_TAG_with_stmt: | |
3995 | return "DW_TAG_with_stmt"; | |
3996 | case DW_TAG_access_declaration: | |
3997 | return "DW_TAG_access_declaration"; | |
3998 | case DW_TAG_base_type: | |
3999 | return "DW_TAG_base_type"; | |
4000 | case DW_TAG_catch_block: | |
4001 | return "DW_TAG_catch_block"; | |
4002 | case DW_TAG_const_type: | |
4003 | return "DW_TAG_const_type"; | |
4004 | case DW_TAG_constant: | |
4005 | return "DW_TAG_constant"; | |
4006 | case DW_TAG_enumerator: | |
4007 | return "DW_TAG_enumerator"; | |
4008 | case DW_TAG_file_type: | |
4009 | return "DW_TAG_file_type"; | |
4010 | case DW_TAG_friend: | |
4011 | return "DW_TAG_friend"; | |
4012 | case DW_TAG_namelist: | |
4013 | return "DW_TAG_namelist"; | |
4014 | case DW_TAG_namelist_item: | |
4015 | return "DW_TAG_namelist_item"; | |
4016 | case DW_TAG_packed_type: | |
4017 | return "DW_TAG_packed_type"; | |
4018 | case DW_TAG_subprogram: | |
4019 | return "DW_TAG_subprogram"; | |
4020 | case DW_TAG_template_type_param: | |
4021 | return "DW_TAG_template_type_param"; | |
4022 | case DW_TAG_template_value_param: | |
4023 | return "DW_TAG_template_value_param"; | |
4024 | case DW_TAG_thrown_type: | |
4025 | return "DW_TAG_thrown_type"; | |
4026 | case DW_TAG_try_block: | |
4027 | return "DW_TAG_try_block"; | |
4028 | case DW_TAG_variant_part: | |
4029 | return "DW_TAG_variant_part"; | |
4030 | case DW_TAG_variable: | |
4031 | return "DW_TAG_variable"; | |
4032 | case DW_TAG_volatile_type: | |
4033 | return "DW_TAG_volatile_type"; | |
4034 | case DW_TAG_MIPS_loop: | |
4035 | return "DW_TAG_MIPS_loop"; | |
4036 | case DW_TAG_format_label: | |
4037 | return "DW_TAG_format_label"; | |
4038 | case DW_TAG_function_template: | |
4039 | return "DW_TAG_function_template"; | |
4040 | case DW_TAG_class_template: | |
4041 | return "DW_TAG_class_template"; | |
881c6935 JM |
4042 | case DW_TAG_GNU_BINCL: |
4043 | return "DW_TAG_GNU_BINCL"; | |
4044 | case DW_TAG_GNU_EINCL: | |
4045 | return "DW_TAG_GNU_EINCL"; | |
7d9d8943 AM |
4046 | default: |
4047 | return "DW_TAG_<unknown>"; | |
4048 | } | |
4049 | } | |
4050 | ||
4051 | /* Convert a DWARF attribute code into its string name. */ | |
4052 | ||
4053 | static const char * | |
4054 | dwarf_attr_name (attr) | |
4055 | register unsigned attr; | |
4056 | { | |
4057 | switch (attr) | |
4058 | { | |
4059 | case DW_AT_sibling: | |
4060 | return "DW_AT_sibling"; | |
4061 | case DW_AT_location: | |
4062 | return "DW_AT_location"; | |
4063 | case DW_AT_name: | |
4064 | return "DW_AT_name"; | |
4065 | case DW_AT_ordering: | |
4066 | return "DW_AT_ordering"; | |
4067 | case DW_AT_subscr_data: | |
4068 | return "DW_AT_subscr_data"; | |
4069 | case DW_AT_byte_size: | |
4070 | return "DW_AT_byte_size"; | |
4071 | case DW_AT_bit_offset: | |
4072 | return "DW_AT_bit_offset"; | |
4073 | case DW_AT_bit_size: | |
4074 | return "DW_AT_bit_size"; | |
4075 | case DW_AT_element_list: | |
4076 | return "DW_AT_element_list"; | |
4077 | case DW_AT_stmt_list: | |
4078 | return "DW_AT_stmt_list"; | |
4079 | case DW_AT_low_pc: | |
4080 | return "DW_AT_low_pc"; | |
4081 | case DW_AT_high_pc: | |
4082 | return "DW_AT_high_pc"; | |
4083 | case DW_AT_language: | |
4084 | return "DW_AT_language"; | |
4085 | case DW_AT_member: | |
4086 | return "DW_AT_member"; | |
4087 | case DW_AT_discr: | |
4088 | return "DW_AT_discr"; | |
4089 | case DW_AT_discr_value: | |
4090 | return "DW_AT_discr_value"; | |
4091 | case DW_AT_visibility: | |
4092 | return "DW_AT_visibility"; | |
4093 | case DW_AT_import: | |
4094 | return "DW_AT_import"; | |
4095 | case DW_AT_string_length: | |
4096 | return "DW_AT_string_length"; | |
4097 | case DW_AT_common_reference: | |
4098 | return "DW_AT_common_reference"; | |
4099 | case DW_AT_comp_dir: | |
4100 | return "DW_AT_comp_dir"; | |
4101 | case DW_AT_const_value: | |
4102 | return "DW_AT_const_value"; | |
4103 | case DW_AT_containing_type: | |
4104 | return "DW_AT_containing_type"; | |
4105 | case DW_AT_default_value: | |
4106 | return "DW_AT_default_value"; | |
4107 | case DW_AT_inline: | |
4108 | return "DW_AT_inline"; | |
4109 | case DW_AT_is_optional: | |
4110 | return "DW_AT_is_optional"; | |
4111 | case DW_AT_lower_bound: | |
4112 | return "DW_AT_lower_bound"; | |
4113 | case DW_AT_producer: | |
4114 | return "DW_AT_producer"; | |
4115 | case DW_AT_prototyped: | |
4116 | return "DW_AT_prototyped"; | |
4117 | case DW_AT_return_addr: | |
4118 | return "DW_AT_return_addr"; | |
4119 | case DW_AT_start_scope: | |
4120 | return "DW_AT_start_scope"; | |
4121 | case DW_AT_stride_size: | |
4122 | return "DW_AT_stride_size"; | |
4123 | case DW_AT_upper_bound: | |
4124 | return "DW_AT_upper_bound"; | |
4125 | case DW_AT_abstract_origin: | |
4126 | return "DW_AT_abstract_origin"; | |
4127 | case DW_AT_accessibility: | |
4128 | return "DW_AT_accessibility"; | |
4129 | case DW_AT_address_class: | |
4130 | return "DW_AT_address_class"; | |
4131 | case DW_AT_artificial: | |
4132 | return "DW_AT_artificial"; | |
4133 | case DW_AT_base_types: | |
4134 | return "DW_AT_base_types"; | |
4135 | case DW_AT_calling_convention: | |
4136 | return "DW_AT_calling_convention"; | |
4137 | case DW_AT_count: | |
4138 | return "DW_AT_count"; | |
4139 | case DW_AT_data_member_location: | |
4140 | return "DW_AT_data_member_location"; | |
4141 | case DW_AT_decl_column: | |
4142 | return "DW_AT_decl_column"; | |
4143 | case DW_AT_decl_file: | |
4144 | return "DW_AT_decl_file"; | |
4145 | case DW_AT_decl_line: | |
4146 | return "DW_AT_decl_line"; | |
4147 | case DW_AT_declaration: | |
4148 | return "DW_AT_declaration"; | |
4149 | case DW_AT_discr_list: | |
4150 | return "DW_AT_discr_list"; | |
4151 | case DW_AT_encoding: | |
4152 | return "DW_AT_encoding"; | |
4153 | case DW_AT_external: | |
4154 | return "DW_AT_external"; | |
4155 | case DW_AT_frame_base: | |
4156 | return "DW_AT_frame_base"; | |
4157 | case DW_AT_friend: | |
4158 | return "DW_AT_friend"; | |
4159 | case DW_AT_identifier_case: | |
4160 | return "DW_AT_identifier_case"; | |
4161 | case DW_AT_macro_info: | |
4162 | return "DW_AT_macro_info"; | |
4163 | case DW_AT_namelist_items: | |
4164 | return "DW_AT_namelist_items"; | |
4165 | case DW_AT_priority: | |
4166 | return "DW_AT_priority"; | |
4167 | case DW_AT_segment: | |
4168 | return "DW_AT_segment"; | |
4169 | case DW_AT_specification: | |
4170 | return "DW_AT_specification"; | |
4171 | case DW_AT_static_link: | |
4172 | return "DW_AT_static_link"; | |
4173 | case DW_AT_type: | |
4174 | return "DW_AT_type"; | |
4175 | case DW_AT_use_location: | |
4176 | return "DW_AT_use_location"; | |
4177 | case DW_AT_variable_parameter: | |
4178 | return "DW_AT_variable_parameter"; | |
4179 | case DW_AT_virtuality: | |
4180 | return "DW_AT_virtuality"; | |
4181 | case DW_AT_vtable_elem_location: | |
4182 | return "DW_AT_vtable_elem_location"; | |
4183 | ||
4184 | case DW_AT_MIPS_fde: | |
4185 | return "DW_AT_MIPS_fde"; | |
4186 | case DW_AT_MIPS_loop_begin: | |
4187 | return "DW_AT_MIPS_loop_begin"; | |
4188 | case DW_AT_MIPS_tail_loop_begin: | |
4189 | return "DW_AT_MIPS_tail_loop_begin"; | |
4190 | case DW_AT_MIPS_epilog_begin: | |
4191 | return "DW_AT_MIPS_epilog_begin"; | |
4192 | case DW_AT_MIPS_loop_unroll_factor: | |
4193 | return "DW_AT_MIPS_loop_unroll_factor"; | |
4194 | case DW_AT_MIPS_software_pipeline_depth: | |
4195 | return "DW_AT_MIPS_software_pipeline_depth"; | |
4196 | case DW_AT_MIPS_linkage_name: | |
4197 | return "DW_AT_MIPS_linkage_name"; | |
4198 | case DW_AT_MIPS_stride: | |
4199 | return "DW_AT_MIPS_stride"; | |
4200 | case DW_AT_MIPS_abstract_name: | |
4201 | return "DW_AT_MIPS_abstract_name"; | |
4202 | case DW_AT_MIPS_clone_origin: | |
4203 | return "DW_AT_MIPS_clone_origin"; | |
4204 | case DW_AT_MIPS_has_inlines: | |
4205 | return "DW_AT_MIPS_has_inlines"; | |
4206 | ||
4207 | case DW_AT_sf_names: | |
4208 | return "DW_AT_sf_names"; | |
4209 | case DW_AT_src_info: | |
4210 | return "DW_AT_src_info"; | |
4211 | case DW_AT_mac_info: | |
4212 | return "DW_AT_mac_info"; | |
4213 | case DW_AT_src_coords: | |
4214 | return "DW_AT_src_coords"; | |
4215 | case DW_AT_body_begin: | |
4216 | return "DW_AT_body_begin"; | |
4217 | case DW_AT_body_end: | |
4218 | return "DW_AT_body_end"; | |
4219 | default: | |
4220 | return "DW_AT_<unknown>"; | |
4221 | } | |
4222 | } | |
4223 | ||
4224 | /* Convert a DWARF value form code into its string name. */ | |
4225 | ||
4226 | static const char * | |
4227 | dwarf_form_name (form) | |
4228 | register unsigned form; | |
4229 | { | |
4230 | switch (form) | |
4231 | { | |
4232 | case DW_FORM_addr: | |
4233 | return "DW_FORM_addr"; | |
4234 | case DW_FORM_block2: | |
4235 | return "DW_FORM_block2"; | |
4236 | case DW_FORM_block4: | |
4237 | return "DW_FORM_block4"; | |
4238 | case DW_FORM_data2: | |
4239 | return "DW_FORM_data2"; | |
4240 | case DW_FORM_data4: | |
4241 | return "DW_FORM_data4"; | |
4242 | case DW_FORM_data8: | |
4243 | return "DW_FORM_data8"; | |
4244 | case DW_FORM_string: | |
4245 | return "DW_FORM_string"; | |
4246 | case DW_FORM_block: | |
4247 | return "DW_FORM_block"; | |
4248 | case DW_FORM_block1: | |
4249 | return "DW_FORM_block1"; | |
4250 | case DW_FORM_data1: | |
4251 | return "DW_FORM_data1"; | |
4252 | case DW_FORM_flag: | |
4253 | return "DW_FORM_flag"; | |
4254 | case DW_FORM_sdata: | |
4255 | return "DW_FORM_sdata"; | |
4256 | case DW_FORM_strp: | |
4257 | return "DW_FORM_strp"; | |
4258 | case DW_FORM_udata: | |
4259 | return "DW_FORM_udata"; | |
4260 | case DW_FORM_ref_addr: | |
4261 | return "DW_FORM_ref_addr"; | |
4262 | case DW_FORM_ref1: | |
4263 | return "DW_FORM_ref1"; | |
4264 | case DW_FORM_ref2: | |
4265 | return "DW_FORM_ref2"; | |
4266 | case DW_FORM_ref4: | |
4267 | return "DW_FORM_ref4"; | |
4268 | case DW_FORM_ref8: | |
4269 | return "DW_FORM_ref8"; | |
4270 | case DW_FORM_ref_udata: | |
4271 | return "DW_FORM_ref_udata"; | |
4272 | case DW_FORM_indirect: | |
4273 | return "DW_FORM_indirect"; | |
3f76745e | 4274 | default: |
7d9d8943 | 4275 | return "DW_FORM_<unknown>"; |
a3f97cbb JW |
4276 | } |
4277 | } | |
4278 | ||
3f76745e | 4279 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 4280 | |
487a6e06 | 4281 | #if 0 |
d560ee52 | 4282 | static const char * |
3f76745e JM |
4283 | dwarf_type_encoding_name (enc) |
4284 | register unsigned enc; | |
a3f97cbb | 4285 | { |
3f76745e | 4286 | switch (enc) |
a3f97cbb | 4287 | { |
3f76745e JM |
4288 | case DW_ATE_address: |
4289 | return "DW_ATE_address"; | |
4290 | case DW_ATE_boolean: | |
4291 | return "DW_ATE_boolean"; | |
4292 | case DW_ATE_complex_float: | |
4293 | return "DW_ATE_complex_float"; | |
4294 | case DW_ATE_float: | |
4295 | return "DW_ATE_float"; | |
4296 | case DW_ATE_signed: | |
4297 | return "DW_ATE_signed"; | |
4298 | case DW_ATE_signed_char: | |
4299 | return "DW_ATE_signed_char"; | |
4300 | case DW_ATE_unsigned: | |
4301 | return "DW_ATE_unsigned"; | |
4302 | case DW_ATE_unsigned_char: | |
4303 | return "DW_ATE_unsigned_char"; | |
4304 | default: | |
4305 | return "DW_ATE_<unknown>"; | |
4306 | } | |
a3f97cbb | 4307 | } |
487a6e06 | 4308 | #endif |
3f76745e JM |
4309 | \f |
4310 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
4311 | instance of an inlined instance of a decl which is local to an inline | |
4312 | function, so we have to trace all of the way back through the origin chain | |
4313 | to find out what sort of node actually served as the original seed for the | |
4314 | given block. */ | |
a3f97cbb | 4315 | |
3f76745e JM |
4316 | static tree |
4317 | decl_ultimate_origin (decl) | |
4318 | register tree decl; | |
a3f97cbb | 4319 | { |
10a11b75 JM |
4320 | /* output_inline_function sets DECL_ABSTRACT_ORIGIN for all the |
4321 | nodes in the function to point to themselves; ignore that if | |
4322 | we're trying to output the abstract instance of this function. */ | |
4323 | if (DECL_ABSTRACT (decl) && DECL_ABSTRACT_ORIGIN (decl) == decl) | |
4324 | return NULL_TREE; | |
4325 | ||
556273e0 | 4326 | #ifdef ENABLE_CHECKING |
02e24c7a MM |
4327 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) |
4328 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
4329 | most distant ancestor, this should never happen. */ | |
4330 | abort (); | |
4331 | #endif | |
3f76745e | 4332 | |
02e24c7a | 4333 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
4334 | } |
4335 | ||
3f76745e JM |
4336 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
4337 | instance of an inlined instance of a block which is local to an inline | |
4338 | function, so we have to trace all of the way back through the origin chain | |
4339 | to find out what sort of node actually served as the original seed for the | |
4340 | given block. */ | |
71dfc51f | 4341 | |
3f76745e JM |
4342 | static tree |
4343 | block_ultimate_origin (block) | |
4344 | register tree block; | |
a3f97cbb | 4345 | { |
3f76745e | 4346 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 4347 | |
10a11b75 JM |
4348 | /* output_inline_function sets BLOCK_ABSTRACT_ORIGIN for all the |
4349 | nodes in the function to point to themselves; ignore that if | |
4350 | we're trying to output the abstract instance of this function. */ | |
4351 | if (BLOCK_ABSTRACT (block) && immediate_origin == block) | |
4352 | return NULL_TREE; | |
4353 | ||
3f76745e JM |
4354 | if (immediate_origin == NULL_TREE) |
4355 | return NULL_TREE; | |
4356 | else | |
4357 | { | |
4358 | register tree ret_val; | |
4359 | register tree lookahead = immediate_origin; | |
71dfc51f | 4360 | |
3f76745e JM |
4361 | do |
4362 | { | |
4363 | ret_val = lookahead; | |
4364 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
4365 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
4366 | : NULL; | |
4367 | } | |
4368 | while (lookahead != NULL && lookahead != ret_val); | |
4369 | ||
4370 | return ret_val; | |
4371 | } | |
a3f97cbb JW |
4372 | } |
4373 | ||
3f76745e JM |
4374 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
4375 | of a virtual function may refer to a base class, so we check the 'this' | |
4376 | parameter. */ | |
71dfc51f | 4377 | |
3f76745e JM |
4378 | static tree |
4379 | decl_class_context (decl) | |
4380 | tree decl; | |
a3f97cbb | 4381 | { |
3f76745e | 4382 | tree context = NULL_TREE; |
71dfc51f | 4383 | |
3f76745e JM |
4384 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
4385 | context = DECL_CONTEXT (decl); | |
4386 | else | |
4387 | context = TYPE_MAIN_VARIANT | |
4388 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 4389 | |
2f939d94 | 4390 | if (context && !TYPE_P (context)) |
3f76745e JM |
4391 | context = NULL_TREE; |
4392 | ||
4393 | return context; | |
a3f97cbb JW |
4394 | } |
4395 | \f | |
a96c67ec | 4396 | /* Add an attribute/value pair to a DIE. We build the lists up in reverse |
881c6935 | 4397 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f RK |
4398 | |
4399 | static inline void | |
3f76745e JM |
4400 | add_dwarf_attr (die, attr) |
4401 | register dw_die_ref die; | |
4402 | register dw_attr_ref attr; | |
a3f97cbb | 4403 | { |
3f76745e | 4404 | if (die != NULL && attr != NULL) |
a3f97cbb | 4405 | { |
a96c67ec JM |
4406 | attr->dw_attr_next = die->die_attr; |
4407 | die->die_attr = attr; | |
a3f97cbb JW |
4408 | } |
4409 | } | |
4410 | ||
c6991660 | 4411 | static inline dw_val_class AT_class PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4412 | static inline dw_val_class |
4413 | AT_class (a) | |
4414 | dw_attr_ref a; | |
4415 | { | |
4416 | return a->dw_attr_val.val_class; | |
4417 | } | |
4418 | ||
3f76745e | 4419 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 4420 | |
3f76745e JM |
4421 | static inline void |
4422 | add_AT_flag (die, attr_kind, flag) | |
4423 | register dw_die_ref die; | |
4424 | register enum dwarf_attribute attr_kind; | |
4425 | register unsigned flag; | |
a3f97cbb | 4426 | { |
3f76745e | 4427 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4428 | |
3f76745e JM |
4429 | attr->dw_attr_next = NULL; |
4430 | attr->dw_attr = attr_kind; | |
4431 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
4432 | attr->dw_attr_val.v.val_flag = flag; | |
4433 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4434 | } |
4435 | ||
c6991660 | 4436 | static inline unsigned AT_flag PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4437 | static inline unsigned |
4438 | AT_flag (a) | |
4439 | register dw_attr_ref a; | |
4440 | { | |
4441 | if (a && AT_class (a) == dw_val_class_flag) | |
4442 | return a->dw_attr_val.v.val_flag; | |
4443 | ||
40e8cc95 | 4444 | abort (); |
a96c67ec JM |
4445 | } |
4446 | ||
3f76745e | 4447 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 4448 | |
3f76745e JM |
4449 | static inline void |
4450 | add_AT_int (die, attr_kind, int_val) | |
4451 | register dw_die_ref die; | |
4452 | register enum dwarf_attribute attr_kind; | |
4453 | register long int int_val; | |
a3f97cbb | 4454 | { |
3f76745e JM |
4455 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
4456 | ||
4457 | attr->dw_attr_next = NULL; | |
4458 | attr->dw_attr = attr_kind; | |
4459 | attr->dw_attr_val.val_class = dw_val_class_const; | |
4460 | attr->dw_attr_val.v.val_int = int_val; | |
4461 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4462 | } |
4463 | ||
c6991660 | 4464 | static inline long int AT_int PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4465 | static inline long int |
4466 | AT_int (a) | |
4467 | register dw_attr_ref a; | |
4468 | { | |
4469 | if (a && AT_class (a) == dw_val_class_const) | |
4470 | return a->dw_attr_val.v.val_int; | |
4471 | ||
40e8cc95 | 4472 | abort (); |
a96c67ec JM |
4473 | } |
4474 | ||
3f76745e | 4475 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 4476 | |
3f76745e JM |
4477 | static inline void |
4478 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
4479 | register dw_die_ref die; | |
4480 | register enum dwarf_attribute attr_kind; | |
4481 | register unsigned long unsigned_val; | |
a3f97cbb | 4482 | { |
3f76745e JM |
4483 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
4484 | ||
4485 | attr->dw_attr_next = NULL; | |
4486 | attr->dw_attr = attr_kind; | |
4487 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
4488 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
4489 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4490 | } |
71dfc51f | 4491 | |
c6991660 | 4492 | static inline unsigned long AT_unsigned PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4493 | static inline unsigned long |
4494 | AT_unsigned (a) | |
4495 | register dw_attr_ref a; | |
4496 | { | |
4497 | if (a && AT_class (a) == dw_val_class_unsigned_const) | |
4498 | return a->dw_attr_val.v.val_unsigned; | |
4499 | ||
40e8cc95 | 4500 | abort (); |
a96c67ec JM |
4501 | } |
4502 | ||
3f76745e JM |
4503 | /* Add an unsigned double integer attribute value to a DIE. */ |
4504 | ||
4505 | static inline void | |
4506 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 4507 | register dw_die_ref die; |
3f76745e JM |
4508 | register enum dwarf_attribute attr_kind; |
4509 | register unsigned long val_hi; | |
4510 | register unsigned long val_low; | |
a3f97cbb | 4511 | { |
3f76745e | 4512 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4513 | |
3f76745e JM |
4514 | attr->dw_attr_next = NULL; |
4515 | attr->dw_attr = attr_kind; | |
4516 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
4517 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
4518 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
4519 | add_dwarf_attr (die, attr); | |
4520 | } | |
71dfc51f | 4521 | |
3f76745e | 4522 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 4523 | |
3f76745e JM |
4524 | static inline void |
4525 | add_AT_float (die, attr_kind, length, array) | |
4526 | register dw_die_ref die; | |
4527 | register enum dwarf_attribute attr_kind; | |
4528 | register unsigned length; | |
4529 | register long *array; | |
4530 | { | |
4531 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
4532 | ||
4533 | attr->dw_attr_next = NULL; | |
4534 | attr->dw_attr = attr_kind; | |
4535 | attr->dw_attr_val.val_class = dw_val_class_float; | |
4536 | attr->dw_attr_val.v.val_float.length = length; | |
4537 | attr->dw_attr_val.v.val_float.array = array; | |
4538 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4539 | } |
4540 | ||
3f76745e | 4541 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 4542 | |
3f76745e JM |
4543 | static inline void |
4544 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 4545 | register dw_die_ref die; |
3f76745e | 4546 | register enum dwarf_attribute attr_kind; |
d560ee52 | 4547 | register const char *str; |
a3f97cbb | 4548 | { |
3f76745e | 4549 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4550 | |
3f76745e JM |
4551 | attr->dw_attr_next = NULL; |
4552 | attr->dw_attr = attr_kind; | |
4553 | attr->dw_attr_val.val_class = dw_val_class_str; | |
4554 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
4555 | add_dwarf_attr (die, attr); | |
4556 | } | |
71dfc51f | 4557 | |
c6991660 | 4558 | static inline const char *AT_string PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4559 | static inline const char * |
4560 | AT_string (a) | |
4561 | register dw_attr_ref a; | |
4562 | { | |
4563 | if (a && AT_class (a) == dw_val_class_str) | |
4564 | return a->dw_attr_val.v.val_str; | |
4565 | ||
40e8cc95 | 4566 | abort (); |
a96c67ec JM |
4567 | } |
4568 | ||
3f76745e | 4569 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 4570 | |
3f76745e JM |
4571 | static inline void |
4572 | add_AT_die_ref (die, attr_kind, targ_die) | |
4573 | register dw_die_ref die; | |
4574 | register enum dwarf_attribute attr_kind; | |
4575 | register dw_die_ref targ_die; | |
4576 | { | |
4577 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 4578 | |
3f76745e JM |
4579 | attr->dw_attr_next = NULL; |
4580 | attr->dw_attr = attr_kind; | |
4581 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
881c6935 JM |
4582 | attr->dw_attr_val.v.val_die_ref.die = targ_die; |
4583 | attr->dw_attr_val.v.val_die_ref.external = 0; | |
3f76745e JM |
4584 | add_dwarf_attr (die, attr); |
4585 | } | |
b1ccbc24 | 4586 | |
c6991660 | 4587 | static inline dw_die_ref AT_ref PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4588 | static inline dw_die_ref |
4589 | AT_ref (a) | |
4590 | register dw_attr_ref a; | |
4591 | { | |
4592 | if (a && AT_class (a) == dw_val_class_die_ref) | |
881c6935 | 4593 | return a->dw_attr_val.v.val_die_ref.die; |
a96c67ec | 4594 | |
40e8cc95 | 4595 | abort (); |
a96c67ec JM |
4596 | } |
4597 | ||
881c6935 JM |
4598 | static inline int AT_ref_external PARAMS ((dw_attr_ref)); |
4599 | static inline int | |
4600 | AT_ref_external (a) | |
4601 | register dw_attr_ref a; | |
4602 | { | |
4603 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4604 | return a->dw_attr_val.v.val_die_ref.external; | |
4605 | ||
4606 | return 0; | |
4607 | } | |
4608 | ||
4609 | static inline void set_AT_ref_external PARAMS ((dw_attr_ref, int)); | |
4610 | static inline void | |
4611 | set_AT_ref_external (a, i) | |
4612 | register dw_attr_ref a; | |
4613 | int i; | |
4614 | { | |
4615 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4616 | a->dw_attr_val.v.val_die_ref.external = i; | |
4617 | else | |
4618 | abort (); | |
4619 | } | |
4620 | ||
3f76745e | 4621 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 4622 | |
3f76745e JM |
4623 | static inline void |
4624 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
4625 | register dw_die_ref die; | |
4626 | register enum dwarf_attribute attr_kind; | |
4627 | register unsigned targ_fde; | |
4628 | { | |
4629 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 4630 | |
3f76745e JM |
4631 | attr->dw_attr_next = NULL; |
4632 | attr->dw_attr = attr_kind; | |
4633 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
4634 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
4635 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4636 | } |
71dfc51f | 4637 | |
3f76745e | 4638 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 4639 | |
3f76745e JM |
4640 | static inline void |
4641 | add_AT_loc (die, attr_kind, loc) | |
4642 | register dw_die_ref die; | |
4643 | register enum dwarf_attribute attr_kind; | |
4644 | register dw_loc_descr_ref loc; | |
4645 | { | |
4646 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 4647 | |
3f76745e JM |
4648 | attr->dw_attr_next = NULL; |
4649 | attr->dw_attr = attr_kind; | |
4650 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
4651 | attr->dw_attr_val.v.val_loc = loc; | |
4652 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4653 | } |
4654 | ||
c6991660 | 4655 | static inline dw_loc_descr_ref AT_loc PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4656 | static inline dw_loc_descr_ref |
4657 | AT_loc (a) | |
4658 | register dw_attr_ref a; | |
4659 | { | |
4660 | if (a && AT_class (a) == dw_val_class_loc) | |
4661 | return a->dw_attr_val.v.val_loc; | |
4662 | ||
40e8cc95 | 4663 | abort (); |
a96c67ec JM |
4664 | } |
4665 | ||
3f76745e | 4666 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 4667 | |
3f76745e JM |
4668 | static inline void |
4669 | add_AT_addr (die, attr_kind, addr) | |
4670 | register dw_die_ref die; | |
4671 | register enum dwarf_attribute attr_kind; | |
1865dbb5 | 4672 | rtx addr; |
a3f97cbb | 4673 | { |
3f76745e | 4674 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4675 | |
3f76745e JM |
4676 | attr->dw_attr_next = NULL; |
4677 | attr->dw_attr = attr_kind; | |
4678 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
4679 | attr->dw_attr_val.v.val_addr = addr; | |
4680 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4681 | } |
4682 | ||
c6991660 | 4683 | static inline rtx AT_addr PARAMS ((dw_attr_ref)); |
1865dbb5 | 4684 | static inline rtx |
a96c67ec JM |
4685 | AT_addr (a) |
4686 | register dw_attr_ref a; | |
4687 | { | |
4688 | if (a && AT_class (a) == dw_val_class_addr) | |
4689 | return a->dw_attr_val.v.val_addr; | |
4690 | ||
40e8cc95 | 4691 | abort (); |
a96c67ec JM |
4692 | } |
4693 | ||
3f76745e | 4694 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 4695 | |
3f76745e JM |
4696 | static inline void |
4697 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
4698 | register dw_die_ref die; | |
4699 | register enum dwarf_attribute attr_kind; | |
d3e3972c | 4700 | register const char *lbl_id; |
a3f97cbb | 4701 | { |
3f76745e | 4702 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4703 | |
3f76745e JM |
4704 | attr->dw_attr_next = NULL; |
4705 | attr->dw_attr = attr_kind; | |
4706 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
4707 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
4708 | add_dwarf_attr (die, attr); | |
4709 | } | |
71dfc51f | 4710 | |
3f76745e JM |
4711 | /* Add a section offset attribute value to a DIE. */ |
4712 | ||
4713 | static inline void | |
8b790721 | 4714 | add_AT_lbl_offset (die, attr_kind, label) |
3f76745e JM |
4715 | register dw_die_ref die; |
4716 | register enum dwarf_attribute attr_kind; | |
d3e3972c | 4717 | register const char *label; |
3f76745e JM |
4718 | { |
4719 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 4720 | |
3f76745e JM |
4721 | attr->dw_attr_next = NULL; |
4722 | attr->dw_attr = attr_kind; | |
8b790721 | 4723 | attr->dw_attr_val.val_class = dw_val_class_lbl_offset; |
a96c67ec | 4724 | attr->dw_attr_val.v.val_lbl_id = xstrdup (label); |
3f76745e | 4725 | add_dwarf_attr (die, attr); |
a3f97cbb JW |
4726 | } |
4727 | ||
c6991660 | 4728 | static inline const char *AT_lbl PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4729 | static inline const char * |
4730 | AT_lbl (a) | |
4731 | register dw_attr_ref a; | |
a3f97cbb | 4732 | { |
a96c67ec JM |
4733 | if (a && (AT_class (a) == dw_val_class_lbl_id |
4734 | || AT_class (a) == dw_val_class_lbl_offset)) | |
4735 | return a->dw_attr_val.v.val_lbl_id; | |
71dfc51f | 4736 | |
40e8cc95 | 4737 | abort (); |
a3f97cbb JW |
4738 | } |
4739 | ||
3f76745e | 4740 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 4741 | |
3f76745e JM |
4742 | static inline dw_attr_ref |
4743 | get_AT (die, attr_kind) | |
4744 | register dw_die_ref die; | |
4745 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 4746 | { |
3f76745e JM |
4747 | register dw_attr_ref a; |
4748 | register dw_die_ref spec = NULL; | |
556273e0 | 4749 | |
3f76745e JM |
4750 | if (die != NULL) |
4751 | { | |
4752 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
4753 | { | |
4754 | if (a->dw_attr == attr_kind) | |
4755 | return a; | |
71dfc51f | 4756 | |
3f76745e JM |
4757 | if (a->dw_attr == DW_AT_specification |
4758 | || a->dw_attr == DW_AT_abstract_origin) | |
a96c67ec | 4759 | spec = AT_ref (a); |
3f76745e | 4760 | } |
71dfc51f | 4761 | |
3f76745e JM |
4762 | if (spec) |
4763 | return get_AT (spec, attr_kind); | |
4764 | } | |
4765 | ||
4766 | return NULL; | |
f37230f0 JM |
4767 | } |
4768 | ||
3f76745e JM |
4769 | /* Return the "low pc" attribute value, typically associated with |
4770 | a subprogram DIE. Return null if the "low pc" attribute is | |
4771 | either not prsent, or if it cannot be represented as an | |
4772 | assembler label identifier. */ | |
71dfc51f | 4773 | |
a96c67ec | 4774 | static inline const char * |
3f76745e JM |
4775 | get_AT_low_pc (die) |
4776 | register dw_die_ref die; | |
7e23cb16 | 4777 | { |
3f76745e | 4778 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
40e8cc95 | 4779 | return a ? AT_lbl (a) : NULL; |
7e23cb16 JM |
4780 | } |
4781 | ||
3f76745e JM |
4782 | /* Return the "high pc" attribute value, typically associated with |
4783 | a subprogram DIE. Return null if the "high pc" attribute is | |
4784 | either not prsent, or if it cannot be represented as an | |
4785 | assembler label identifier. */ | |
71dfc51f | 4786 | |
a96c67ec | 4787 | static inline const char * |
3f76745e | 4788 | get_AT_hi_pc (die) |
a3f97cbb JW |
4789 | register dw_die_ref die; |
4790 | { | |
3f76745e | 4791 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
40e8cc95 | 4792 | return a ? AT_lbl (a) : NULL; |
3f76745e JM |
4793 | } |
4794 | ||
4795 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
4796 | NULL if it is not present. */ | |
71dfc51f | 4797 | |
a96c67ec | 4798 | static inline const char * |
3f76745e JM |
4799 | get_AT_string (die, attr_kind) |
4800 | register dw_die_ref die; | |
4801 | register enum dwarf_attribute attr_kind; | |
4802 | { | |
4803 | register dw_attr_ref a = get_AT (die, attr_kind); | |
40e8cc95 | 4804 | return a ? AT_string (a) : NULL; |
a3f97cbb JW |
4805 | } |
4806 | ||
3f76745e JM |
4807 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
4808 | if it is not present. */ | |
71dfc51f | 4809 | |
3f76745e JM |
4810 | static inline int |
4811 | get_AT_flag (die, attr_kind) | |
4812 | register dw_die_ref die; | |
4813 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 4814 | { |
3f76745e | 4815 | register dw_attr_ref a = get_AT (die, attr_kind); |
40e8cc95 | 4816 | return a ? AT_flag (a) : 0; |
a3f97cbb JW |
4817 | } |
4818 | ||
3f76745e JM |
4819 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
4820 | if it is not present. */ | |
71dfc51f | 4821 | |
3f76745e JM |
4822 | static inline unsigned |
4823 | get_AT_unsigned (die, attr_kind) | |
4824 | register dw_die_ref die; | |
4825 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 4826 | { |
3f76745e | 4827 | register dw_attr_ref a = get_AT (die, attr_kind); |
40e8cc95 | 4828 | return a ? AT_unsigned (a) : 0; |
a96c67ec | 4829 | } |
71dfc51f | 4830 | |
a96c67ec JM |
4831 | static inline dw_die_ref |
4832 | get_AT_ref (die, attr_kind) | |
4833 | dw_die_ref die; | |
4834 | register enum dwarf_attribute attr_kind; | |
4835 | { | |
4836 | register dw_attr_ref a = get_AT (die, attr_kind); | |
40e8cc95 | 4837 | return a ? AT_ref (a) : NULL; |
3f76745e | 4838 | } |
71dfc51f | 4839 | |
3f76745e JM |
4840 | static inline int |
4841 | is_c_family () | |
4842 | { | |
4843 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 4844 | |
3f76745e JM |
4845 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
4846 | || lang == DW_LANG_C_plus_plus); | |
556273e0 | 4847 | } |
71dfc51f | 4848 | |
3f76745e JM |
4849 | static inline int |
4850 | is_fortran () | |
4851 | { | |
4852 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 4853 | |
3f76745e | 4854 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
556273e0 | 4855 | } |
71dfc51f | 4856 | |
28985b81 AG |
4857 | static inline int |
4858 | is_java () | |
4859 | { | |
4860 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
4861 | ||
4862 | return (lang == DW_LANG_Java); | |
4863 | } | |
4864 | ||
10a11b75 | 4865 | /* Free up the memory used by A. */ |
71dfc51f | 4866 | |
c6991660 | 4867 | static inline void free_AT PARAMS ((dw_attr_ref)); |
3f76745e | 4868 | static inline void |
10a11b75 JM |
4869 | free_AT (a) |
4870 | dw_attr_ref a; | |
4871 | { | |
4872 | switch (AT_class (a)) | |
4873 | { | |
10a11b75 JM |
4874 | case dw_val_class_str: |
4875 | case dw_val_class_lbl_id: | |
4876 | case dw_val_class_lbl_offset: | |
4877 | free (a->dw_attr_val.v.val_str); | |
4878 | break; | |
4879 | ||
3724ec07 WC |
4880 | case dw_val_class_float: |
4881 | free (a->dw_attr_val.v.val_float.array); | |
4882 | break; | |
0b34cf1e | 4883 | |
10a11b75 JM |
4884 | default: |
4885 | break; | |
4886 | } | |
4887 | ||
4888 | free (a); | |
556273e0 | 4889 | } |
10a11b75 JM |
4890 | |
4891 | /* Remove the specified attribute if present. */ | |
4892 | ||
4893 | static void | |
3f76745e JM |
4894 | remove_AT (die, attr_kind) |
4895 | register dw_die_ref die; | |
4896 | register enum dwarf_attribute attr_kind; | |
4897 | { | |
a96c67ec | 4898 | register dw_attr_ref *p; |
6d649d26 | 4899 | register dw_attr_ref removed = NULL; |
a3f97cbb | 4900 | |
3f76745e JM |
4901 | if (die != NULL) |
4902 | { | |
a96c67ec JM |
4903 | for (p = &(die->die_attr); *p; p = &((*p)->dw_attr_next)) |
4904 | if ((*p)->dw_attr == attr_kind) | |
4905 | { | |
4906 | removed = *p; | |
4907 | *p = (*p)->dw_attr_next; | |
4908 | break; | |
4909 | } | |
71dfc51f | 4910 | |
a96c67ec | 4911 | if (removed != 0) |
10a11b75 JM |
4912 | free_AT (removed); |
4913 | } | |
4914 | } | |
71dfc51f | 4915 | |
10a11b75 | 4916 | /* Free up the memory used by DIE. */ |
71dfc51f | 4917 | |
c6991660 | 4918 | static inline void free_die PARAMS ((dw_die_ref)); |
10a11b75 JM |
4919 | static inline void |
4920 | free_die (die) | |
4921 | dw_die_ref die; | |
4922 | { | |
4923 | remove_children (die); | |
4924 | free (die); | |
3f76745e | 4925 | } |
71dfc51f | 4926 | |
3f76745e | 4927 | /* Discard the children of this DIE. */ |
71dfc51f | 4928 | |
10a11b75 | 4929 | static void |
3f76745e JM |
4930 | remove_children (die) |
4931 | register dw_die_ref die; | |
4932 | { | |
4933 | register dw_die_ref child_die = die->die_child; | |
4934 | ||
4935 | die->die_child = NULL; | |
3f76745e JM |
4936 | |
4937 | while (child_die != NULL) | |
a3f97cbb | 4938 | { |
3f76745e JM |
4939 | register dw_die_ref tmp_die = child_die; |
4940 | register dw_attr_ref a; | |
71dfc51f | 4941 | |
3f76745e | 4942 | child_die = child_die->die_sib; |
556273e0 KH |
4943 | |
4944 | for (a = tmp_die->die_attr; a != NULL;) | |
a3f97cbb | 4945 | { |
3f76745e | 4946 | register dw_attr_ref tmp_a = a; |
71dfc51f | 4947 | |
3f76745e | 4948 | a = a->dw_attr_next; |
10a11b75 | 4949 | free_AT (tmp_a); |
a3f97cbb | 4950 | } |
71dfc51f | 4951 | |
10a11b75 | 4952 | free_die (tmp_die); |
3f76745e JM |
4953 | } |
4954 | } | |
71dfc51f | 4955 | |
a96c67ec | 4956 | /* Add a child DIE below its parent. We build the lists up in reverse |
881c6935 | 4957 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f | 4958 | |
3f76745e JM |
4959 | static inline void |
4960 | add_child_die (die, child_die) | |
4961 | register dw_die_ref die; | |
4962 | register dw_die_ref child_die; | |
4963 | { | |
4964 | if (die != NULL && child_die != NULL) | |
e90b62db | 4965 | { |
3a88cbd1 JL |
4966 | if (die == child_die) |
4967 | abort (); | |
3f76745e | 4968 | child_die->die_parent = die; |
a96c67ec JM |
4969 | child_die->die_sib = die->die_child; |
4970 | die->die_child = child_die; | |
3f76745e JM |
4971 | } |
4972 | } | |
4973 | ||
2081603c JM |
4974 | /* Move CHILD, which must be a child of PARENT or the DIE for which PARENT |
4975 | is the specification, to the front of PARENT's list of children. */ | |
10a11b75 JM |
4976 | |
4977 | static void | |
4978 | splice_child_die (parent, child) | |
4979 | dw_die_ref parent, child; | |
4980 | { | |
4981 | dw_die_ref *p; | |
4982 | ||
4983 | /* We want the declaration DIE from inside the class, not the | |
4984 | specification DIE at toplevel. */ | |
4985 | if (child->die_parent != parent) | |
2081603c JM |
4986 | { |
4987 | dw_die_ref tmp = get_AT_ref (child, DW_AT_specification); | |
4988 | if (tmp) | |
4989 | child = tmp; | |
4990 | } | |
10a11b75 | 4991 | |
2081603c JM |
4992 | if (child->die_parent != parent |
4993 | && child->die_parent != get_AT_ref (parent, DW_AT_specification)) | |
10a11b75 JM |
4994 | abort (); |
4995 | ||
5de0e8d4 | 4996 | for (p = &(child->die_parent->die_child); *p; p = &((*p)->die_sib)) |
10a11b75 JM |
4997 | if (*p == child) |
4998 | { | |
4999 | *p = child->die_sib; | |
5000 | break; | |
5001 | } | |
5002 | ||
5003 | child->die_sib = parent->die_child; | |
5004 | parent->die_child = child; | |
5005 | } | |
5006 | ||
3f76745e JM |
5007 | /* Return a pointer to a newly created DIE node. */ |
5008 | ||
5009 | static inline dw_die_ref | |
5010 | new_die (tag_value, parent_die) | |
5011 | register enum dwarf_tag tag_value; | |
5012 | register dw_die_ref parent_die; | |
5013 | { | |
3f4907a6 | 5014 | register dw_die_ref die = (dw_die_ref) xcalloc (1, sizeof (die_node)); |
3f76745e JM |
5015 | |
5016 | die->die_tag = tag_value; | |
3f76745e JM |
5017 | |
5018 | if (parent_die != NULL) | |
5019 | add_child_die (parent_die, die); | |
5020 | else | |
ef76d03b JW |
5021 | { |
5022 | limbo_die_node *limbo_node; | |
5023 | ||
5024 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
5025 | limbo_node->die = die; | |
5026 | limbo_node->next = limbo_die_list; | |
5027 | limbo_die_list = limbo_node; | |
5028 | } | |
71dfc51f | 5029 | |
3f76745e JM |
5030 | return die; |
5031 | } | |
71dfc51f | 5032 | |
3f76745e | 5033 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 5034 | |
3f76745e JM |
5035 | static inline dw_die_ref |
5036 | lookup_type_die (type) | |
5037 | register tree type; | |
5038 | { | |
4061f623 BS |
5039 | if (TREE_CODE (type) == VECTOR_TYPE) |
5040 | type = TYPE_DEBUG_REPRESENTATION_TYPE (type); | |
3f76745e JM |
5041 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); |
5042 | } | |
e90b62db | 5043 | |
3f76745e | 5044 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 5045 | |
10a11b75 | 5046 | static inline void |
3f76745e JM |
5047 | equate_type_number_to_die (type, type_die) |
5048 | register tree type; | |
5049 | register dw_die_ref type_die; | |
5050 | { | |
5051 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
5052 | } | |
71dfc51f | 5053 | |
3f76745e | 5054 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 5055 | |
3f76745e JM |
5056 | static inline dw_die_ref |
5057 | lookup_decl_die (decl) | |
5058 | register tree decl; | |
5059 | { | |
5060 | register unsigned decl_id = DECL_UID (decl); | |
5061 | ||
5062 | return (decl_id < decl_die_table_in_use | |
5063 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
5064 | } |
5065 | ||
3f76745e | 5066 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 5067 | |
3f76745e JM |
5068 | static void |
5069 | equate_decl_number_to_die (decl, decl_die) | |
5070 | register tree decl; | |
5071 | register dw_die_ref decl_die; | |
a3f97cbb | 5072 | { |
3f76745e | 5073 | register unsigned decl_id = DECL_UID (decl); |
3f76745e | 5074 | register unsigned num_allocated; |
d291dd49 | 5075 | |
3f76745e | 5076 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 5077 | { |
3f76745e JM |
5078 | num_allocated |
5079 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
5080 | / DECL_DIE_TABLE_INCREMENT) | |
5081 | * DECL_DIE_TABLE_INCREMENT; | |
5082 | ||
5083 | decl_die_table | |
5084 | = (dw_die_ref *) xrealloc (decl_die_table, | |
5085 | sizeof (dw_die_ref) * num_allocated); | |
5086 | ||
961192e1 | 5087 | memset ((char *) &decl_die_table[decl_die_table_allocated], 0, |
3f76745e JM |
5088 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); |
5089 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 5090 | } |
71dfc51f | 5091 | |
3f76745e JM |
5092 | if (decl_id >= decl_die_table_in_use) |
5093 | decl_die_table_in_use = (decl_id + 1); | |
5094 | ||
5095 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb | 5096 | } |
3f76745e JM |
5097 | \f |
5098 | /* Keep track of the number of spaces used to indent the | |
5099 | output of the debugging routines that print the structure of | |
5100 | the DIE internal representation. */ | |
5101 | static int print_indent; | |
71dfc51f | 5102 | |
3f76745e JM |
5103 | /* Indent the line the number of spaces given by print_indent. */ |
5104 | ||
5105 | static inline void | |
5106 | print_spaces (outfile) | |
5107 | FILE *outfile; | |
5108 | { | |
5109 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
5110 | } |
5111 | ||
956d6950 | 5112 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 5113 | This routine is a debugging aid only. */ |
71dfc51f | 5114 | |
a3f97cbb | 5115 | static void |
3f76745e JM |
5116 | print_die (die, outfile) |
5117 | dw_die_ref die; | |
5118 | FILE *outfile; | |
a3f97cbb | 5119 | { |
3f76745e JM |
5120 | register dw_attr_ref a; |
5121 | register dw_die_ref c; | |
71dfc51f | 5122 | |
3f76745e | 5123 | print_spaces (outfile); |
2d8b0f3a | 5124 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
5125 | die->die_offset, dwarf_tag_name (die->die_tag)); |
5126 | print_spaces (outfile); | |
2d8b0f3a JL |
5127 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
5128 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
5129 | |
5130 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 5131 | { |
3f76745e JM |
5132 | print_spaces (outfile); |
5133 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
5134 | ||
a96c67ec | 5135 | switch (AT_class (a)) |
3f76745e JM |
5136 | { |
5137 | case dw_val_class_addr: | |
5138 | fprintf (outfile, "address"); | |
5139 | break; | |
5140 | case dw_val_class_loc: | |
5141 | fprintf (outfile, "location descriptor"); | |
5142 | break; | |
5143 | case dw_val_class_const: | |
a96c67ec | 5144 | fprintf (outfile, "%ld", AT_int (a)); |
3f76745e JM |
5145 | break; |
5146 | case dw_val_class_unsigned_const: | |
a96c67ec | 5147 | fprintf (outfile, "%lu", AT_unsigned (a)); |
3f76745e JM |
5148 | break; |
5149 | case dw_val_class_long_long: | |
2d8b0f3a | 5150 | fprintf (outfile, "constant (%lu,%lu)", |
556273e0 KH |
5151 | a->dw_attr_val.v.val_long_long.hi, |
5152 | a->dw_attr_val.v.val_long_long.low); | |
3f76745e JM |
5153 | break; |
5154 | case dw_val_class_float: | |
5155 | fprintf (outfile, "floating-point constant"); | |
5156 | break; | |
5157 | case dw_val_class_flag: | |
a96c67ec | 5158 | fprintf (outfile, "%u", AT_flag (a)); |
3f76745e JM |
5159 | break; |
5160 | case dw_val_class_die_ref: | |
a96c67ec | 5161 | if (AT_ref (a) != NULL) |
881c6935 | 5162 | { |
1bfb5f8f | 5163 | if (AT_ref (a)->die_symbol) |
881c6935 JM |
5164 | fprintf (outfile, "die -> label: %s", AT_ref (a)->die_symbol); |
5165 | else | |
5166 | fprintf (outfile, "die -> %lu", AT_ref (a)->die_offset); | |
5167 | } | |
3f76745e JM |
5168 | else |
5169 | fprintf (outfile, "die -> <null>"); | |
5170 | break; | |
5171 | case dw_val_class_lbl_id: | |
8b790721 | 5172 | case dw_val_class_lbl_offset: |
a96c67ec | 5173 | fprintf (outfile, "label: %s", AT_lbl (a)); |
3f76745e | 5174 | break; |
3f76745e | 5175 | case dw_val_class_str: |
a96c67ec JM |
5176 | if (AT_string (a) != NULL) |
5177 | fprintf (outfile, "\"%s\"", AT_string (a)); | |
3f76745e JM |
5178 | else |
5179 | fprintf (outfile, "<null>"); | |
5180 | break; | |
e9a25f70 JL |
5181 | default: |
5182 | break; | |
3f76745e JM |
5183 | } |
5184 | ||
5185 | fprintf (outfile, "\n"); | |
5186 | } | |
5187 | ||
5188 | if (die->die_child != NULL) | |
5189 | { | |
5190 | print_indent += 4; | |
5191 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5192 | print_die (c, outfile); | |
71dfc51f | 5193 | |
3f76745e | 5194 | print_indent -= 4; |
a3f97cbb | 5195 | } |
881c6935 JM |
5196 | if (print_indent == 0) |
5197 | fprintf (outfile, "\n"); | |
a3f97cbb JW |
5198 | } |
5199 | ||
3f76745e JM |
5200 | /* Print the contents of the source code line number correspondence table. |
5201 | This routine is a debugging aid only. */ | |
71dfc51f | 5202 | |
3f76745e JM |
5203 | static void |
5204 | print_dwarf_line_table (outfile) | |
5205 | FILE *outfile; | |
a3f97cbb | 5206 | { |
3f76745e JM |
5207 | register unsigned i; |
5208 | register dw_line_info_ref line_info; | |
5209 | ||
5210 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
5211 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 5212 | { |
3f76745e JM |
5213 | line_info = &line_info_table[i]; |
5214 | fprintf (outfile, "%5d: ", i); | |
2e18bbae | 5215 | fprintf (outfile, "%-20s", line_file_table.table[line_info->dw_file_num]); |
2d8b0f3a | 5216 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 5217 | fprintf (outfile, "\n"); |
a3f97cbb | 5218 | } |
3f76745e JM |
5219 | |
5220 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
5221 | } |
5222 | ||
3f76745e JM |
5223 | /* Print the information collected for a given DIE. */ |
5224 | ||
5225 | void | |
5226 | debug_dwarf_die (die) | |
5227 | dw_die_ref die; | |
5228 | { | |
5229 | print_die (die, stderr); | |
5230 | } | |
5231 | ||
5232 | /* Print all DWARF information collected for the compilation unit. | |
5233 | This routine is a debugging aid only. */ | |
5234 | ||
5235 | void | |
5236 | debug_dwarf () | |
5237 | { | |
5238 | print_indent = 0; | |
5239 | print_die (comp_unit_die, stderr); | |
b2244e22 JW |
5240 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
5241 | print_dwarf_line_table (stderr); | |
3f76745e JM |
5242 | } |
5243 | \f | |
a96c67ec JM |
5244 | /* We build up the lists of children and attributes by pushing new ones |
5245 | onto the beginning of the list. Reverse the lists for DIE so that | |
5246 | they are in order of addition. */ | |
71dfc51f | 5247 | |
f37230f0 | 5248 | static void |
a96c67ec | 5249 | reverse_die_lists (die) |
3f76745e | 5250 | register dw_die_ref die; |
f37230f0 | 5251 | { |
a96c67ec JM |
5252 | register dw_die_ref c, cp, cn; |
5253 | register dw_attr_ref a, ap, an; | |
71dfc51f | 5254 | |
a96c67ec | 5255 | for (a = die->die_attr, ap = 0; a; a = an) |
7d9d8943 AM |
5256 | { |
5257 | an = a->dw_attr_next; | |
5258 | a->dw_attr_next = ap; | |
5259 | ap = a; | |
a3f97cbb | 5260 | } |
7d9d8943 | 5261 | die->die_attr = ap; |
3f76745e | 5262 | |
7d9d8943 AM |
5263 | for (c = die->die_child, cp = 0; c; c = cn) |
5264 | { | |
5265 | cn = c->die_sib; | |
5266 | c->die_sib = cp; | |
5267 | cp = c; | |
5268 | } | |
5269 | die->die_child = cp; | |
a3f97cbb JW |
5270 | } |
5271 | ||
881c6935 JM |
5272 | /* reverse_die_lists only reverses the single die you pass it. Since |
5273 | we used to reverse all dies in add_sibling_attributes, which runs | |
5274 | through all the dies, it would reverse all the dies. Now, however, | |
5275 | since we don't call reverse_die_lists in add_sibling_attributes, we | |
5276 | need a routine to recursively reverse all the dies. This is that | |
5277 | routine. */ | |
71dfc51f | 5278 | |
7d9d8943 | 5279 | static void |
881c6935 | 5280 | reverse_all_dies (die) |
7d9d8943 | 5281 | register dw_die_ref die; |
a3f97cbb | 5282 | { |
7d9d8943 | 5283 | register dw_die_ref c; |
71dfc51f | 5284 | |
7d9d8943 | 5285 | reverse_die_lists (die); |
3f76745e | 5286 | |
881c6935 JM |
5287 | for (c = die->die_child; c; c = c->die_sib) |
5288 | reverse_all_dies (c); | |
5289 | } | |
5290 | ||
5291 | /* Start a new compilation unit DIE for an include file. OLD_UNIT is | |
5292 | the CU for the enclosing include file, if any. BINCL_DIE is the | |
5293 | DW_TAG_GNU_BINCL DIE that marks the start of the DIEs for this | |
5294 | include file. */ | |
5295 | ||
5296 | static dw_die_ref | |
5297 | push_new_compile_unit (old_unit, bincl_die) | |
5298 | dw_die_ref old_unit, bincl_die; | |
5299 | { | |
5300 | const char *filename = get_AT_string (bincl_die, DW_AT_name); | |
5301 | dw_die_ref new_unit = gen_compile_unit_die (filename); | |
5302 | new_unit->die_sib = old_unit; | |
5303 | return new_unit; | |
5304 | } | |
5305 | ||
5306 | /* Close an include-file CU and reopen the enclosing one. */ | |
5307 | ||
5308 | static dw_die_ref | |
5309 | pop_compile_unit (old_unit) | |
5310 | dw_die_ref old_unit; | |
5311 | { | |
5312 | dw_die_ref new_unit = old_unit->die_sib; | |
5313 | old_unit->die_sib = NULL; | |
5314 | return new_unit; | |
5315 | } | |
5316 | ||
5317 | #define PROCESS(FOO) md5_process_bytes (&(FOO), sizeof (FOO), ctx) | |
5318 | #define PROCESS_STRING(FOO) md5_process_bytes ((FOO), strlen (FOO), ctx) | |
5319 | ||
5320 | /* Calculate the checksum of a location expression. */ | |
5321 | ||
5322 | static inline void | |
5323 | loc_checksum (loc, ctx) | |
5324 | dw_loc_descr_ref loc; | |
5325 | struct md5_ctx *ctx; | |
5326 | { | |
5327 | PROCESS (loc->dw_loc_opc); | |
5328 | PROCESS (loc->dw_loc_oprnd1); | |
5329 | PROCESS (loc->dw_loc_oprnd2); | |
5330 | } | |
5331 | ||
5332 | /* Calculate the checksum of an attribute. */ | |
5333 | ||
5334 | static void | |
5335 | attr_checksum (at, ctx) | |
5336 | dw_attr_ref at; | |
5337 | struct md5_ctx *ctx; | |
5338 | { | |
5339 | dw_loc_descr_ref loc; | |
5340 | rtx r; | |
5341 | ||
5342 | PROCESS (at->dw_attr); | |
5343 | ||
5344 | /* We don't care about differences in file numbering. */ | |
5f632b5e JM |
5345 | if (at->dw_attr == DW_AT_decl_file |
5346 | /* Or that this was compiled with a different compiler snapshot; if | |
5347 | the output is the same, that's what matters. */ | |
5348 | || at->dw_attr == DW_AT_producer) | |
881c6935 JM |
5349 | return; |
5350 | ||
5351 | switch (AT_class (at)) | |
5352 | { | |
5353 | case dw_val_class_const: | |
5354 | PROCESS (at->dw_attr_val.v.val_int); | |
5355 | break; | |
5356 | case dw_val_class_unsigned_const: | |
5357 | PROCESS (at->dw_attr_val.v.val_unsigned); | |
5358 | break; | |
5359 | case dw_val_class_long_long: | |
5360 | PROCESS (at->dw_attr_val.v.val_long_long); | |
5361 | break; | |
5362 | case dw_val_class_float: | |
5363 | PROCESS (at->dw_attr_val.v.val_float); | |
5364 | break; | |
5365 | case dw_val_class_flag: | |
5366 | PROCESS (at->dw_attr_val.v.val_flag); | |
5367 | break; | |
5368 | ||
5369 | case dw_val_class_str: | |
5370 | PROCESS_STRING (AT_string (at)); | |
5371 | break; | |
5372 | case dw_val_class_addr: | |
5373 | r = AT_addr (at); | |
5374 | switch (GET_CODE (r)) | |
5375 | { | |
5376 | case SYMBOL_REF: | |
5377 | PROCESS_STRING (XSTR (r, 0)); | |
5378 | break; | |
5379 | ||
5380 | default: | |
5381 | abort (); | |
5382 | } | |
5383 | break; | |
5384 | ||
5385 | case dw_val_class_loc: | |
5386 | for (loc = AT_loc (at); loc; loc = loc->dw_loc_next) | |
5387 | loc_checksum (loc, ctx); | |
5388 | break; | |
5389 | ||
5390 | case dw_val_class_die_ref: | |
5391 | if (AT_ref (at)->die_offset) | |
5392 | PROCESS (AT_ref (at)->die_offset); | |
5393 | /* FIXME else use target die name or something. */ | |
5394 | ||
5395 | case dw_val_class_fde_ref: | |
5396 | case dw_val_class_lbl_id: | |
5397 | case dw_val_class_lbl_offset: | |
5398 | ||
5399 | default: | |
5400 | break; | |
5401 | } | |
5402 | } | |
5403 | ||
5404 | /* Calculate the checksum of a DIE. */ | |
5405 | ||
5406 | static void | |
5407 | die_checksum (die, ctx) | |
5408 | dw_die_ref die; | |
5409 | struct md5_ctx *ctx; | |
5410 | { | |
5411 | dw_die_ref c; | |
5412 | dw_attr_ref a; | |
5413 | ||
5414 | PROCESS (die->die_tag); | |
5415 | ||
5416 | for (a = die->die_attr; a; a = a->dw_attr_next) | |
5417 | attr_checksum (a, ctx); | |
5418 | ||
5419 | for (c = die->die_child; c; c = c->die_sib) | |
5420 | die_checksum (c, ctx); | |
5421 | } | |
5422 | ||
5423 | #undef PROCESS | |
5424 | #undef PROCESS_STRING | |
5425 | ||
5426 | /* The prefix to attach to symbols on DIEs in the current comdat debug | |
5427 | info section. */ | |
5428 | static char *comdat_symbol_id; | |
5429 | ||
5430 | /* The index of the current symbol within the current comdat CU. */ | |
5431 | static unsigned int comdat_symbol_number; | |
5432 | ||
5433 | /* Calculate the MD5 checksum of the compilation unit DIE UNIT_DIE and its | |
5434 | children, and set comdat_symbol_id accordingly. */ | |
5435 | ||
5436 | static void | |
5437 | compute_section_prefix (unit_die) | |
5438 | dw_die_ref unit_die; | |
5439 | { | |
5440 | char *p, *name; | |
5441 | int i; | |
5442 | unsigned char checksum[16]; | |
5443 | struct md5_ctx ctx; | |
5444 | ||
5445 | md5_init_ctx (&ctx); | |
5446 | die_checksum (unit_die, &ctx); | |
5447 | md5_finish_ctx (&ctx, checksum); | |
5448 | ||
5449 | p = file_name_nondirectory (get_AT_string (unit_die, DW_AT_name)); | |
5450 | name = (char *) alloca (strlen (p) + 64); | |
5451 | sprintf (name, "%s.", p); | |
5452 | ||
5453 | clean_symbol_name (name); | |
5454 | ||
5455 | p = name + strlen (name); | |
5456 | for (i = 0; i < 4; ++i) | |
5457 | { | |
5458 | sprintf (p, "%.2x", checksum[i]); | |
5459 | p += 2; | |
5460 | } | |
5461 | ||
5462 | comdat_symbol_id = unit_die->die_symbol = xstrdup (name); | |
5463 | comdat_symbol_number = 0; | |
5464 | } | |
5465 | ||
5466 | /* Returns nonzero iff DIE represents a type, in the sense of TYPE_P. */ | |
5467 | ||
5468 | static int | |
5469 | is_type_die (die) | |
5470 | dw_die_ref die; | |
5471 | { | |
5472 | switch (die->die_tag) | |
5473 | { | |
5474 | case DW_TAG_array_type: | |
5475 | case DW_TAG_class_type: | |
5476 | case DW_TAG_enumeration_type: | |
5477 | case DW_TAG_pointer_type: | |
5478 | case DW_TAG_reference_type: | |
5479 | case DW_TAG_string_type: | |
5480 | case DW_TAG_structure_type: | |
5481 | case DW_TAG_subroutine_type: | |
5482 | case DW_TAG_union_type: | |
5483 | case DW_TAG_ptr_to_member_type: | |
5484 | case DW_TAG_set_type: | |
5485 | case DW_TAG_subrange_type: | |
5486 | case DW_TAG_base_type: | |
5487 | case DW_TAG_const_type: | |
5488 | case DW_TAG_file_type: | |
5489 | case DW_TAG_packed_type: | |
5490 | case DW_TAG_volatile_type: | |
5491 | return 1; | |
5492 | default: | |
5493 | return 0; | |
5494 | } | |
5495 | } | |
5496 | ||
5497 | /* Returns 1 iff C is the sort of DIE that should go into a COMDAT CU. | |
5498 | Basically, we want to choose the bits that are likely to be shared between | |
5499 | compilations (types) and leave out the bits that are specific to individual | |
5500 | compilations (functions). */ | |
5501 | ||
5502 | static int | |
5503 | is_comdat_die (c) | |
5504 | dw_die_ref c; | |
5505 | { | |
5506 | #if 1 | |
5507 | /* I think we want to leave base types and __vtbl_ptr_type in the | |
5508 | main CU, as we do for stabs. The advantage is a greater | |
5509 | likelihood of sharing between objects that don't include headers | |
5510 | in the same order (and therefore would put the base types in a | |
5511 | different comdat). jason 8/28/00 */ | |
5512 | if (c->die_tag == DW_TAG_base_type) | |
5513 | return 0; | |
5514 | ||
5515 | if (c->die_tag == DW_TAG_pointer_type | |
5516 | || c->die_tag == DW_TAG_reference_type | |
5517 | || c->die_tag == DW_TAG_const_type | |
5518 | || c->die_tag == DW_TAG_volatile_type) | |
5519 | { | |
5520 | dw_die_ref t = get_AT_ref (c, DW_AT_type); | |
5521 | return t ? is_comdat_die (t) : 0; | |
5522 | } | |
5523 | #endif | |
5524 | ||
5525 | return is_type_die (c); | |
5526 | } | |
5527 | ||
5528 | /* Returns 1 iff C is the sort of DIE that might be referred to from another | |
5529 | compilation unit. */ | |
5530 | ||
5531 | static int | |
5532 | is_symbol_die (c) | |
5533 | dw_die_ref c; | |
5534 | { | |
5535 | if (is_type_die (c)) | |
5536 | return 1; | |
5537 | if (get_AT (c, DW_AT_declaration) | |
5538 | && ! get_AT (c, DW_AT_specification)) | |
5539 | return 1; | |
5540 | return 0; | |
5541 | } | |
5542 | ||
5543 | static char * | |
5544 | gen_internal_sym () | |
5545 | { | |
5546 | char buf[256]; | |
5547 | static int label_num; | |
5548 | ASM_GENERATE_INTERNAL_LABEL (buf, "LDIE", label_num++); | |
5549 | return xstrdup (buf); | |
5550 | } | |
5551 | ||
5552 | /* Assign symbols to all worthy DIEs under DIE. */ | |
5553 | ||
5554 | static void | |
5555 | assign_symbol_names (die) | |
5556 | register dw_die_ref die; | |
5557 | { | |
5558 | register dw_die_ref c; | |
5559 | ||
5560 | if (is_symbol_die (die)) | |
5561 | { | |
5562 | if (comdat_symbol_id) | |
5563 | { | |
5564 | char *p = alloca (strlen (comdat_symbol_id) + 64); | |
5565 | sprintf (p, "%s.%s.%x", DIE_LABEL_PREFIX, | |
5566 | comdat_symbol_id, comdat_symbol_number++); | |
5567 | die->die_symbol = xstrdup (p); | |
5568 | } | |
5569 | else | |
5570 | die->die_symbol = gen_internal_sym (); | |
5571 | } | |
5572 | ||
5573 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5574 | assign_symbol_names (c); | |
5575 | } | |
5576 | ||
5577 | /* Traverse the DIE (which is always comp_unit_die), and set up | |
5578 | additional compilation units for each of the include files we see | |
5579 | bracketed by BINCL/EINCL. */ | |
5580 | ||
5581 | static void | |
5582 | break_out_includes (die) | |
5583 | register dw_die_ref die; | |
5584 | { | |
5585 | dw_die_ref *ptr; | |
5586 | register dw_die_ref unit = NULL; | |
5587 | limbo_die_node *node; | |
5588 | ||
5589 | for (ptr = &(die->die_child); *ptr; ) | |
5590 | { | |
5591 | register dw_die_ref c = *ptr; | |
5592 | ||
5593 | if (c->die_tag == DW_TAG_GNU_BINCL | |
5594 | || c->die_tag == DW_TAG_GNU_EINCL | |
5595 | || (unit && is_comdat_die (c))) | |
5596 | { | |
5597 | /* This DIE is for a secondary CU; remove it from the main one. */ | |
5598 | *ptr = c->die_sib; | |
5599 | ||
5600 | if (c->die_tag == DW_TAG_GNU_BINCL) | |
5601 | { | |
5602 | unit = push_new_compile_unit (unit, c); | |
5603 | free_die (c); | |
5604 | } | |
5605 | else if (c->die_tag == DW_TAG_GNU_EINCL) | |
5606 | { | |
5607 | unit = pop_compile_unit (unit); | |
5608 | free_die (c); | |
5609 | } | |
5610 | else | |
5611 | add_child_die (unit, c); | |
5612 | } | |
5613 | else | |
5614 | { | |
5615 | /* Leave this DIE in the main CU. */ | |
5616 | ptr = &(c->die_sib); | |
5617 | continue; | |
5618 | } | |
5619 | } | |
5620 | ||
5621 | #if 0 | |
5622 | /* We can only use this in debugging, since the frontend doesn't check | |
0b34cf1e | 5623 | to make sure that we leave every include file we enter. */ |
881c6935 JM |
5624 | if (unit != NULL) |
5625 | abort (); | |
5626 | #endif | |
5627 | ||
5628 | assign_symbol_names (die); | |
5629 | for (node = limbo_die_list; node; node = node->next) | |
5630 | { | |
5631 | compute_section_prefix (node->die); | |
5632 | assign_symbol_names (node->die); | |
5633 | } | |
5634 | } | |
5635 | ||
5636 | /* Traverse the DIE and add a sibling attribute if it may have the | |
5637 | effect of speeding up access to siblings. To save some space, | |
5638 | avoid generating sibling attributes for DIE's without children. */ | |
5639 | ||
5640 | static void | |
5641 | add_sibling_attributes (die) | |
5642 | register dw_die_ref die; | |
5643 | { | |
5644 | register dw_die_ref c; | |
5645 | ||
5646 | if (die->die_tag != DW_TAG_compile_unit | |
5647 | && die->die_sib && die->die_child != NULL) | |
7d9d8943 AM |
5648 | /* Add the sibling link to the front of the attribute list. */ |
5649 | add_AT_die_ref (die, DW_AT_sibling, die->die_sib); | |
5650 | ||
5651 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5652 | add_sibling_attributes (c); | |
5653 | } | |
5654 | ||
5655 | /* The format of each DIE (and its attribute value pairs) | |
5656 | is encoded in an abbreviation table. This routine builds the | |
5657 | abbreviation table and assigns a unique abbreviation id for | |
5658 | each abbreviation entry. The children of each die are visited | |
5659 | recursively. */ | |
5660 | ||
5661 | static void | |
5662 | build_abbrev_table (die) | |
5663 | register dw_die_ref die; | |
5664 | { | |
5665 | register unsigned long abbrev_id; | |
5666 | register unsigned long n_alloc; | |
5667 | register dw_die_ref c; | |
5668 | register dw_attr_ref d_attr, a_attr; | |
881c6935 JM |
5669 | |
5670 | /* Scan the DIE references, and mark as external any that refer to | |
1bfb5f8f | 5671 | DIEs from other CUs (i.e. those which are not marked). */ |
881c6935 JM |
5672 | for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next) |
5673 | { | |
5674 | if (AT_class (d_attr) == dw_val_class_die_ref | |
1bfb5f8f | 5675 | && AT_ref (d_attr)->die_mark == 0) |
881c6935 JM |
5676 | { |
5677 | if (AT_ref (d_attr)->die_symbol == 0) | |
5678 | abort (); | |
5679 | set_AT_ref_external (d_attr, 1); | |
5680 | } | |
5681 | } | |
5682 | ||
7d9d8943 AM |
5683 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
5684 | { | |
5685 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
5686 | ||
5687 | if (abbrev->die_tag == die->die_tag) | |
5688 | { | |
5689 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
5690 | { | |
5691 | a_attr = abbrev->die_attr; | |
5692 | d_attr = die->die_attr; | |
5693 | ||
5694 | while (a_attr != NULL && d_attr != NULL) | |
5695 | { | |
5696 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
5697 | || (value_format (a_attr) != value_format (d_attr))) | |
5698 | break; | |
5699 | ||
5700 | a_attr = a_attr->dw_attr_next; | |
5701 | d_attr = d_attr->dw_attr_next; | |
5702 | } | |
5703 | ||
5704 | if (a_attr == NULL && d_attr == NULL) | |
5705 | break; | |
5706 | } | |
5707 | } | |
5708 | } | |
5709 | ||
5710 | if (abbrev_id >= abbrev_die_table_in_use) | |
5711 | { | |
5712 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
5713 | { | |
5714 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; | |
556273e0 | 5715 | abbrev_die_table |
7d9d8943 AM |
5716 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
5717 | sizeof (dw_die_ref) * n_alloc); | |
5718 | ||
961192e1 | 5719 | memset ((char *) &abbrev_die_table[abbrev_die_table_allocated], 0, |
7d9d8943 AM |
5720 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); |
5721 | abbrev_die_table_allocated = n_alloc; | |
5722 | } | |
5723 | ||
5724 | ++abbrev_die_table_in_use; | |
5725 | abbrev_die_table[abbrev_id] = die; | |
5726 | } | |
5727 | ||
5728 | die->die_abbrev = abbrev_id; | |
5729 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5730 | build_abbrev_table (c); | |
5731 | } | |
5732 | \f | |
5733 | /* Return the size of a string, including the null byte. | |
5734 | ||
5735 | This used to treat backslashes as escapes, and hence they were not included | |
5736 | in the count. However, that conflicts with what ASM_OUTPUT_ASCII does, | |
5737 | which treats a backslash as a backslash, escaping it if necessary, and hence | |
5738 | we must include them in the count. */ | |
5739 | ||
5740 | static unsigned long | |
5741 | size_of_string (str) | |
5742 | register const char *str; | |
5743 | { | |
5744 | return strlen (str) + 1; | |
3f76745e JM |
5745 | } |
5746 | ||
5747 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
5748 | ||
5749 | static int | |
5750 | constant_size (value) | |
5751 | long unsigned value; | |
5752 | { | |
5753 | int log; | |
5754 | ||
5755 | if (value == 0) | |
5756 | log = 0; | |
a3f97cbb | 5757 | else |
3f76745e | 5758 | log = floor_log2 (value); |
71dfc51f | 5759 | |
3f76745e JM |
5760 | log = log / 8; |
5761 | log = 1 << (floor_log2 (log) + 1); | |
5762 | ||
5763 | return log; | |
a3f97cbb JW |
5764 | } |
5765 | ||
3f76745e JM |
5766 | /* Return the size of a DIE, as it is represented in the |
5767 | .debug_info section. */ | |
71dfc51f | 5768 | |
3f76745e JM |
5769 | static unsigned long |
5770 | size_of_die (die) | |
a3f97cbb JW |
5771 | register dw_die_ref die; |
5772 | { | |
3f76745e | 5773 | register unsigned long size = 0; |
a3f97cbb | 5774 | register dw_attr_ref a; |
71dfc51f | 5775 | |
3f76745e | 5776 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
5777 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
5778 | { | |
a96c67ec | 5779 | switch (AT_class (a)) |
a3f97cbb JW |
5780 | { |
5781 | case dw_val_class_addr: | |
a1a4189d | 5782 | size += DWARF2_ADDR_SIZE; |
a3f97cbb JW |
5783 | break; |
5784 | case dw_val_class_loc: | |
3f76745e | 5785 | { |
a96c67ec | 5786 | register unsigned long lsize = size_of_locs (AT_loc (a)); |
71dfc51f | 5787 | |
3f76745e JM |
5788 | /* Block length. */ |
5789 | size += constant_size (lsize); | |
5790 | size += lsize; | |
5791 | } | |
a3f97cbb JW |
5792 | break; |
5793 | case dw_val_class_const: | |
25dd13ec | 5794 | size += size_of_sleb128 (AT_int (a)); |
a3f97cbb JW |
5795 | break; |
5796 | case dw_val_class_unsigned_const: | |
a96c67ec | 5797 | size += constant_size (AT_unsigned (a)); |
a3f97cbb | 5798 | break; |
469ac993 | 5799 | case dw_val_class_long_long: |
3f76745e | 5800 | size += 1 + 8; /* block */ |
469ac993 JM |
5801 | break; |
5802 | case dw_val_class_float: | |
3f76745e | 5803 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
5804 | break; |
5805 | case dw_val_class_flag: | |
3f76745e | 5806 | size += 1; |
a3f97cbb JW |
5807 | break; |
5808 | case dw_val_class_die_ref: | |
3f76745e | 5809 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
5810 | break; |
5811 | case dw_val_class_fde_ref: | |
3f76745e | 5812 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
5813 | break; |
5814 | case dw_val_class_lbl_id: | |
a1a4189d | 5815 | size += DWARF2_ADDR_SIZE; |
3f76745e | 5816 | break; |
8b790721 | 5817 | case dw_val_class_lbl_offset: |
3f76745e JM |
5818 | size += DWARF_OFFSET_SIZE; |
5819 | break; | |
5820 | case dw_val_class_str: | |
a96c67ec | 5821 | size += size_of_string (AT_string (a)); |
3f76745e JM |
5822 | break; |
5823 | default: | |
5824 | abort (); | |
5825 | } | |
a3f97cbb | 5826 | } |
3f76745e JM |
5827 | |
5828 | return size; | |
a3f97cbb JW |
5829 | } |
5830 | ||
956d6950 | 5831 | /* Size the debugging information associated with a given DIE. |
3f76745e JM |
5832 | Visits the DIE's children recursively. Updates the global |
5833 | variable next_die_offset, on each time through. Uses the | |
956d6950 | 5834 | current value of next_die_offset to update the die_offset |
3f76745e | 5835 | field in each DIE. */ |
71dfc51f | 5836 | |
a3f97cbb | 5837 | static void |
3f76745e JM |
5838 | calc_die_sizes (die) |
5839 | dw_die_ref die; | |
a3f97cbb | 5840 | { |
3f76745e JM |
5841 | register dw_die_ref c; |
5842 | die->die_offset = next_die_offset; | |
5843 | next_die_offset += size_of_die (die); | |
71dfc51f | 5844 | |
3f76745e JM |
5845 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5846 | calc_die_sizes (c); | |
71dfc51f | 5847 | |
3f76745e JM |
5848 | if (die->die_child != NULL) |
5849 | /* Count the null byte used to terminate sibling lists. */ | |
5850 | next_die_offset += 1; | |
a3f97cbb JW |
5851 | } |
5852 | ||
1bfb5f8f | 5853 | /* Set the marks for a die and its children. We do this so |
881c6935 | 5854 | that we know whether or not a reference needs to use FORM_ref_addr; only |
1bfb5f8f JM |
5855 | DIEs in the same CU will be marked. We used to clear out the offset |
5856 | and use that as the flag, but ran into ordering problems. */ | |
881c6935 JM |
5857 | |
5858 | static void | |
1bfb5f8f | 5859 | mark_dies (die) |
881c6935 JM |
5860 | dw_die_ref die; |
5861 | { | |
5862 | register dw_die_ref c; | |
1bfb5f8f JM |
5863 | die->die_mark = 1; |
5864 | for (c = die->die_child; c; c = c->die_sib) | |
5865 | mark_dies (c); | |
5866 | } | |
5867 | ||
5868 | /* Clear the marks for a die and its children. */ | |
5869 | ||
5870 | static void | |
5871 | unmark_dies (die) | |
5872 | dw_die_ref die; | |
5873 | { | |
5874 | register dw_die_ref c; | |
5875 | die->die_mark = 0; | |
881c6935 | 5876 | for (c = die->die_child; c; c = c->die_sib) |
1bfb5f8f | 5877 | unmark_dies (c); |
881c6935 JM |
5878 | } |
5879 | ||
3f76745e JM |
5880 | /* Return the size of the line information prolog generated for the |
5881 | compilation unit. */ | |
469ac993 | 5882 | |
3f76745e JM |
5883 | static unsigned long |
5884 | size_of_line_prolog () | |
a94dbf2c | 5885 | { |
3f76745e JM |
5886 | register unsigned long size; |
5887 | register unsigned long ft_index; | |
a94dbf2c | 5888 | |
3f76745e | 5889 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 5890 | |
3f76745e JM |
5891 | /* Count the size of the table giving number of args for each |
5892 | standard opcode. */ | |
5893 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 5894 | |
3f76745e | 5895 | /* Include directory table is empty (at present). Count only the |
38e01259 | 5896 | null byte used to terminate the table. */ |
3f76745e | 5897 | size += 1; |
71dfc51f | 5898 | |
2e18bbae | 5899 | for (ft_index = 1; ft_index < decl_file_table.in_use; ++ft_index) |
3f76745e JM |
5900 | { |
5901 | /* File name entry. */ | |
2e18bbae | 5902 | size += size_of_string (decl_file_table.table[ft_index]); |
a94dbf2c | 5903 | |
3f76745e JM |
5904 | /* Include directory index. */ |
5905 | size += size_of_uleb128 (0); | |
a94dbf2c | 5906 | |
3f76745e JM |
5907 | /* Modification time. */ |
5908 | size += size_of_uleb128 (0); | |
71dfc51f | 5909 | |
3f76745e JM |
5910 | /* File length in bytes. */ |
5911 | size += size_of_uleb128 (0); | |
a94dbf2c | 5912 | } |
71dfc51f | 5913 | |
3f76745e JM |
5914 | /* Count the file table terminator. */ |
5915 | size += 1; | |
5916 | return size; | |
a94dbf2c JM |
5917 | } |
5918 | ||
3f76745e JM |
5919 | /* Return the size of the .debug_pubnames table generated for the |
5920 | compilation unit. */ | |
a94dbf2c | 5921 | |
3f76745e JM |
5922 | static unsigned long |
5923 | size_of_pubnames () | |
a94dbf2c | 5924 | { |
3f76745e JM |
5925 | register unsigned long size; |
5926 | register unsigned i; | |
469ac993 | 5927 | |
3f76745e JM |
5928 | size = DWARF_PUBNAMES_HEADER_SIZE; |
5929 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 5930 | { |
3f76745e JM |
5931 | register pubname_ref p = &pubname_table[i]; |
5932 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
5933 | } |
5934 | ||
3f76745e JM |
5935 | size += DWARF_OFFSET_SIZE; |
5936 | return size; | |
a94dbf2c JM |
5937 | } |
5938 | ||
956d6950 | 5939 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 5940 | |
3f76745e JM |
5941 | static unsigned long |
5942 | size_of_aranges () | |
469ac993 | 5943 | { |
3f76745e | 5944 | register unsigned long size; |
469ac993 | 5945 | |
3f76745e | 5946 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 5947 | |
3f76745e | 5948 | /* Count the address/length pair for this compilation unit. */ |
a1a4189d JB |
5949 | size += 2 * DWARF2_ADDR_SIZE; |
5950 | size += 2 * DWARF2_ADDR_SIZE * arange_table_in_use; | |
469ac993 | 5951 | |
3f76745e | 5952 | /* Count the two zero words used to terminated the address range table. */ |
a1a4189d | 5953 | size += 2 * DWARF2_ADDR_SIZE; |
3f76745e JM |
5954 | return size; |
5955 | } | |
5956 | \f | |
5957 | /* Select the encoding of an attribute value. */ | |
5958 | ||
5959 | static enum dwarf_form | |
a96c67ec JM |
5960 | value_format (a) |
5961 | dw_attr_ref a; | |
3f76745e | 5962 | { |
a96c67ec | 5963 | switch (a->dw_attr_val.val_class) |
469ac993 | 5964 | { |
3f76745e JM |
5965 | case dw_val_class_addr: |
5966 | return DW_FORM_addr; | |
5967 | case dw_val_class_loc: | |
a96c67ec | 5968 | switch (constant_size (size_of_locs (AT_loc (a)))) |
469ac993 | 5969 | { |
3f76745e JM |
5970 | case 1: |
5971 | return DW_FORM_block1; | |
5972 | case 2: | |
5973 | return DW_FORM_block2; | |
469ac993 JM |
5974 | default: |
5975 | abort (); | |
5976 | } | |
3f76745e | 5977 | case dw_val_class_const: |
25dd13ec | 5978 | return DW_FORM_sdata; |
3f76745e | 5979 | case dw_val_class_unsigned_const: |
a96c67ec | 5980 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
5981 | { |
5982 | case 1: | |
5983 | return DW_FORM_data1; | |
5984 | case 2: | |
5985 | return DW_FORM_data2; | |
5986 | case 4: | |
5987 | return DW_FORM_data4; | |
5988 | case 8: | |
5989 | return DW_FORM_data8; | |
5990 | default: | |
5991 | abort (); | |
5992 | } | |
5993 | case dw_val_class_long_long: | |
5994 | return DW_FORM_block1; | |
5995 | case dw_val_class_float: | |
5996 | return DW_FORM_block1; | |
5997 | case dw_val_class_flag: | |
5998 | return DW_FORM_flag; | |
5999 | case dw_val_class_die_ref: | |
881c6935 JM |
6000 | if (AT_ref_external (a)) |
6001 | return DW_FORM_ref_addr; | |
6002 | else | |
6003 | return DW_FORM_ref; | |
3f76745e JM |
6004 | case dw_val_class_fde_ref: |
6005 | return DW_FORM_data; | |
6006 | case dw_val_class_lbl_id: | |
6007 | return DW_FORM_addr; | |
8b790721 | 6008 | case dw_val_class_lbl_offset: |
3f76745e JM |
6009 | return DW_FORM_data; |
6010 | case dw_val_class_str: | |
6011 | return DW_FORM_string; | |
469ac993 JM |
6012 | default: |
6013 | abort (); | |
6014 | } | |
a94dbf2c JM |
6015 | } |
6016 | ||
3f76745e | 6017 | /* Output the encoding of an attribute value. */ |
469ac993 | 6018 | |
3f76745e | 6019 | static void |
a96c67ec JM |
6020 | output_value_format (a) |
6021 | dw_attr_ref a; | |
a94dbf2c | 6022 | { |
a96c67ec | 6023 | enum dwarf_form form = value_format (a); |
71dfc51f | 6024 | |
3f76745e | 6025 | output_uleb128 (form); |
c5cec899 | 6026 | if (flag_debug_asm) |
3f76745e | 6027 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 6028 | |
3f76745e JM |
6029 | fputc ('\n', asm_out_file); |
6030 | } | |
469ac993 | 6031 | |
3f76745e JM |
6032 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
6033 | table. */ | |
469ac993 | 6034 | |
3f76745e JM |
6035 | static void |
6036 | output_abbrev_section () | |
6037 | { | |
6038 | unsigned long abbrev_id; | |
71dfc51f | 6039 | |
3f76745e JM |
6040 | dw_attr_ref a_attr; |
6041 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
6042 | { | |
6043 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 6044 | |
3f76745e | 6045 | output_uleb128 (abbrev_id); |
c5cec899 | 6046 | if (flag_debug_asm) |
3f76745e | 6047 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 6048 | |
3f76745e JM |
6049 | fputc ('\n', asm_out_file); |
6050 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 6051 | if (flag_debug_asm) |
3f76745e JM |
6052 | fprintf (asm_out_file, " (TAG: %s)", |
6053 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 6054 | |
3f76745e | 6055 | fputc ('\n', asm_out_file); |
e8638df0 | 6056 | fprintf (asm_out_file, "%s0x%x", ASM_BYTE_OP, |
3f76745e | 6057 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); |
469ac993 | 6058 | |
c5cec899 | 6059 | if (flag_debug_asm) |
3f76745e JM |
6060 | fprintf (asm_out_file, "\t%s %s", |
6061 | ASM_COMMENT_START, | |
6062 | (abbrev->die_child != NULL | |
6063 | ? "DW_children_yes" : "DW_children_no")); | |
6064 | ||
6065 | fputc ('\n', asm_out_file); | |
6066 | ||
6067 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
6068 | a_attr = a_attr->dw_attr_next) | |
6069 | { | |
6070 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 6071 | if (flag_debug_asm) |
3f76745e JM |
6072 | fprintf (asm_out_file, " (%s)", |
6073 | dwarf_attr_name (a_attr->dw_attr)); | |
6074 | ||
6075 | fputc ('\n', asm_out_file); | |
a96c67ec | 6076 | output_value_format (a_attr); |
469ac993 | 6077 | } |
469ac993 | 6078 | |
e8638df0 | 6079 | fprintf (asm_out_file, "%s0,0\n", ASM_BYTE_OP); |
469ac993 | 6080 | } |
81f374eb HPN |
6081 | |
6082 | /* Terminate the table. */ | |
e8638df0 | 6083 | fprintf (asm_out_file, "%s0\n", ASM_BYTE_OP); |
a94dbf2c JM |
6084 | } |
6085 | ||
881c6935 JM |
6086 | /* Output a symbol we can use to refer to this DIE from another CU. */ |
6087 | ||
6088 | static inline void | |
6089 | output_die_symbol (die) | |
6090 | register dw_die_ref die; | |
6091 | { | |
6092 | char *sym = die->die_symbol; | |
6093 | ||
6094 | if (sym == 0) | |
6095 | return; | |
6096 | ||
6097 | if (strncmp (sym, DIE_LABEL_PREFIX, sizeof (DIE_LABEL_PREFIX) - 1) == 0) | |
6098 | /* We make these global, not weak; if the target doesn't support | |
6099 | .linkonce, it doesn't support combining the sections, so debugging | |
6100 | will break. */ | |
6101 | ASM_GLOBALIZE_LABEL (asm_out_file, sym); | |
6102 | ASM_OUTPUT_LABEL (asm_out_file, sym); | |
6103 | } | |
6104 | ||
6105 | /* Output a symbolic (i.e. FORM_ref_addr) reference to TARGET_DIE. */ | |
6106 | ||
6107 | static inline void | |
6108 | output_symbolic_ref (target_die) | |
6109 | dw_die_ref target_die; | |
6110 | { | |
6111 | char *sym = target_die->die_symbol; | |
6112 | ||
6113 | if (sym == 0) | |
6114 | abort (); | |
6115 | ||
6116 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, sym); | |
6117 | } | |
6118 | ||
3f76745e JM |
6119 | /* Output the DIE and its attributes. Called recursively to generate |
6120 | the definitions of each child DIE. */ | |
71dfc51f | 6121 | |
a3f97cbb | 6122 | static void |
3f76745e JM |
6123 | output_die (die) |
6124 | register dw_die_ref die; | |
a3f97cbb | 6125 | { |
3f76745e JM |
6126 | register dw_attr_ref a; |
6127 | register dw_die_ref c; | |
3f76745e | 6128 | register unsigned long size; |
a94dbf2c | 6129 | |
881c6935 JM |
6130 | /* If someone in another CU might refer to us, set up a symbol for |
6131 | them to point to. */ | |
6132 | if (die->die_symbol) | |
6133 | output_die_symbol (die); | |
6134 | ||
3f76745e | 6135 | output_uleb128 (die->die_abbrev); |
c5cec899 | 6136 | if (flag_debug_asm) |
2d8b0f3a | 6137 | fprintf (asm_out_file, " (DIE (0x%lx) %s)", |
3f76745e | 6138 | die->die_offset, dwarf_tag_name (die->die_tag)); |
a94dbf2c | 6139 | |
3f76745e | 6140 | fputc ('\n', asm_out_file); |
a94dbf2c | 6141 | |
3f76745e | 6142 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 6143 | { |
a96c67ec | 6144 | switch (AT_class (a)) |
3f76745e JM |
6145 | { |
6146 | case dw_val_class_addr: | |
a96c67ec | 6147 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, AT_addr (a)); |
3f76745e | 6148 | break; |
a3f97cbb | 6149 | |
3f76745e | 6150 | case dw_val_class_loc: |
a96c67ec | 6151 | size = size_of_locs (AT_loc (a)); |
71dfc51f | 6152 | |
3f76745e JM |
6153 | /* Output the block length for this list of location operations. */ |
6154 | switch (constant_size (size)) | |
6155 | { | |
6156 | case 1: | |
6157 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
6158 | break; | |
6159 | case 2: | |
6160 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
6161 | break; | |
6162 | default: | |
6163 | abort (); | |
6164 | } | |
71dfc51f | 6165 | |
c5cec899 | 6166 | if (flag_debug_asm) |
3f76745e JM |
6167 | fprintf (asm_out_file, "\t%s %s", |
6168 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 6169 | |
3f76745e | 6170 | fputc ('\n', asm_out_file); |
71dfc51f | 6171 | |
7d9d8943 | 6172 | output_loc_sequence (AT_loc (a)); |
a3f97cbb | 6173 | break; |
3f76745e JM |
6174 | |
6175 | case dw_val_class_const: | |
25dd13ec JW |
6176 | /* ??? It would be slightly more efficient to use a scheme like is |
6177 | used for unsigned constants below, but gdb 4.x does not sign | |
6178 | extend. Gdb 5.x does sign extend. */ | |
6179 | output_sleb128 (AT_int (a)); | |
a3f97cbb | 6180 | break; |
3f76745e JM |
6181 | |
6182 | case dw_val_class_unsigned_const: | |
a96c67ec | 6183 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
6184 | { |
6185 | case 1: | |
a96c67ec | 6186 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
6187 | break; |
6188 | case 2: | |
a96c67ec | 6189 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
6190 | break; |
6191 | case 4: | |
a96c67ec | 6192 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
6193 | break; |
6194 | case 8: | |
21217bd0 | 6195 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
6196 | break; |
6197 | default: | |
6198 | abort (); | |
6199 | } | |
a3f97cbb | 6200 | break; |
3f76745e JM |
6201 | |
6202 | case dw_val_class_long_long: | |
6203 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 6204 | if (flag_debug_asm) |
3f76745e | 6205 | fprintf (asm_out_file, "\t%s %s", |
556273e0 | 6206 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); |
3f76745e JM |
6207 | |
6208 | fputc ('\n', asm_out_file); | |
21217bd0 JW |
6209 | ASM_OUTPUT_DWARF_CONST_DOUBLE (asm_out_file, |
6210 | a->dw_attr_val.v.val_long_long.hi, | |
6211 | a->dw_attr_val.v.val_long_long.low); | |
3f76745e | 6212 | |
c5cec899 | 6213 | if (flag_debug_asm) |
3f76745e JM |
6214 | fprintf (asm_out_file, |
6215 | "\t%s long long constant", ASM_COMMENT_START); | |
556273e0 | 6216 | |
3f76745e | 6217 | fputc ('\n', asm_out_file); |
a3f97cbb | 6218 | break; |
3f76745e JM |
6219 | |
6220 | case dw_val_class_float: | |
c84e2712 KG |
6221 | { |
6222 | register unsigned int i; | |
6223 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
6224 | a->dw_attr_val.v.val_float.length * 4); | |
6225 | if (flag_debug_asm) | |
6226 | fprintf (asm_out_file, "\t%s %s", | |
6227 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
6228 | ||
6229 | fputc ('\n', asm_out_file); | |
6230 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
6231 | { | |
6232 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
6233 | a->dw_attr_val.v.val_float.array[i]); | |
6234 | if (flag_debug_asm) | |
6235 | fprintf (asm_out_file, "\t%s fp constant word %u", | |
6236 | ASM_COMMENT_START, i); | |
6237 | ||
6238 | fputc ('\n', asm_out_file); | |
6239 | } | |
556273e0 | 6240 | break; |
c84e2712 | 6241 | } |
3f76745e JM |
6242 | |
6243 | case dw_val_class_flag: | |
a96c67ec | 6244 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_flag (a)); |
a3f97cbb | 6245 | break; |
3f76745e JM |
6246 | |
6247 | case dw_val_class_die_ref: | |
881c6935 JM |
6248 | if (AT_ref_external (a)) |
6249 | output_symbolic_ref (AT_ref (a)); | |
3f4907a6 JM |
6250 | else if (AT_ref (a)->die_offset == 0) |
6251 | abort (); | |
881c6935 JM |
6252 | else |
6253 | ASM_OUTPUT_DWARF_DATA (asm_out_file, AT_ref (a)->die_offset); | |
a3f97cbb | 6254 | break; |
3f76745e JM |
6255 | |
6256 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
6257 | { |
6258 | char l1[20]; | |
6259 | ASM_GENERATE_INTERNAL_LABEL | |
6260 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
6261 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
6262 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
6263 | } | |
a3f97cbb | 6264 | break; |
a3f97cbb | 6265 | |
3f76745e | 6266 | case dw_val_class_lbl_id: |
a96c67ec | 6267 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, AT_lbl (a)); |
3f76745e | 6268 | break; |
71dfc51f | 6269 | |
8b790721 | 6270 | case dw_val_class_lbl_offset: |
a96c67ec | 6271 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, AT_lbl (a)); |
3f76745e | 6272 | break; |
a3f97cbb | 6273 | |
3f76745e | 6274 | case dw_val_class_str: |
8d4e65a6 | 6275 | if (flag_debug_asm) |
a96c67ec | 6276 | ASM_OUTPUT_DWARF_STRING (asm_out_file, AT_string (a)); |
8d4e65a6 | 6277 | else |
a96c67ec JM |
6278 | ASM_OUTPUT_ASCII (asm_out_file, AT_string (a), |
6279 | (int) strlen (AT_string (a)) + 1); | |
3f76745e | 6280 | break; |
b2932ae5 | 6281 | |
3f76745e JM |
6282 | default: |
6283 | abort (); | |
6284 | } | |
a94dbf2c | 6285 | |
a96c67ec JM |
6286 | if (AT_class (a) != dw_val_class_loc |
6287 | && AT_class (a) != dw_val_class_long_long | |
6288 | && AT_class (a) != dw_val_class_float) | |
3f76745e | 6289 | { |
c5cec899 | 6290 | if (flag_debug_asm) |
3f76745e JM |
6291 | fprintf (asm_out_file, "\t%s %s", |
6292 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 6293 | |
3f76745e JM |
6294 | fputc ('\n', asm_out_file); |
6295 | } | |
6296 | } | |
71dfc51f | 6297 | |
3f76745e JM |
6298 | for (c = die->die_child; c != NULL; c = c->die_sib) |
6299 | output_die (c); | |
71dfc51f | 6300 | |
3f76745e | 6301 | if (die->die_child != NULL) |
7e23cb16 | 6302 | { |
556273e0 | 6303 | /* Add null byte to terminate sibling list. */ |
3f76745e | 6304 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 6305 | if (flag_debug_asm) |
2d8b0f3a | 6306 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%lx", |
3f76745e JM |
6307 | ASM_COMMENT_START, die->die_offset); |
6308 | ||
7e23cb16 JM |
6309 | fputc ('\n', asm_out_file); |
6310 | } | |
3f76745e | 6311 | } |
71dfc51f | 6312 | |
3f76745e JM |
6313 | /* Output the compilation unit that appears at the beginning of the |
6314 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 6315 | |
3f76745e JM |
6316 | static void |
6317 | output_compilation_unit_header () | |
6318 | { | |
6319 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 6320 | if (flag_debug_asm) |
3f76745e JM |
6321 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
6322 | ASM_COMMENT_START); | |
71dfc51f | 6323 | |
a3f97cbb | 6324 | fputc ('\n', asm_out_file); |
3f76745e | 6325 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 6326 | if (flag_debug_asm) |
3f76745e | 6327 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 6328 | |
a3f97cbb | 6329 | fputc ('\n', asm_out_file); |
8b790721 | 6330 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, abbrev_section_label); |
c5cec899 | 6331 | if (flag_debug_asm) |
3f76745e JM |
6332 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
6333 | ASM_COMMENT_START); | |
71dfc51f | 6334 | |
a3f97cbb | 6335 | fputc ('\n', asm_out_file); |
a1a4189d | 6336 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF2_ADDR_SIZE); |
c5cec899 | 6337 | if (flag_debug_asm) |
3f76745e | 6338 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 6339 | |
a3f97cbb | 6340 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
6341 | } |
6342 | ||
881c6935 JM |
6343 | /* Output the compilation unit DIE and its children. */ |
6344 | ||
6345 | static void | |
6346 | output_comp_unit (die) | |
6347 | dw_die_ref die; | |
6348 | { | |
ce1cc601 | 6349 | const char *secname; |
881c6935 JM |
6350 | |
6351 | if (die->die_child == 0) | |
6352 | return; | |
6353 | ||
1bfb5f8f JM |
6354 | /* Mark all the DIEs in this CU so we know which get local refs. */ |
6355 | mark_dies (die); | |
6356 | ||
6357 | build_abbrev_table (die); | |
6358 | ||
881c6935 JM |
6359 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
6360 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
6361 | calc_die_sizes (die); | |
6362 | ||
881c6935 JM |
6363 | if (die->die_symbol) |
6364 | { | |
ce1cc601 KG |
6365 | char *tmp = (char *) alloca (strlen (die->die_symbol) + 24); |
6366 | sprintf (tmp, ".gnu.linkonce.wi.%s", die->die_symbol); | |
6367 | secname = tmp; | |
881c6935 JM |
6368 | die->die_symbol = NULL; |
6369 | } | |
6370 | else | |
ce1cc601 | 6371 | secname = (const char *) DEBUG_INFO_SECTION; |
881c6935 JM |
6372 | |
6373 | /* Output debugging information. */ | |
6374 | fputc ('\n', asm_out_file); | |
6375 | ASM_OUTPUT_SECTION (asm_out_file, secname); | |
6376 | output_compilation_unit_header (); | |
6377 | output_die (die); | |
6378 | ||
1bfb5f8f JM |
6379 | /* Leave the marks on the main CU, so we can check them in |
6380 | output_pubnames. */ | |
881c6935 | 6381 | if (die->die_symbol) |
1bfb5f8f | 6382 | unmark_dies (die); |
881c6935 JM |
6383 | } |
6384 | ||
a1d7ffe3 JM |
6385 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
6386 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
6387 | argument list, and maybe the scope. */ | |
6388 | ||
d560ee52 | 6389 | static const char * |
a1d7ffe3 JM |
6390 | dwarf2_name (decl, scope) |
6391 | tree decl; | |
6392 | int scope; | |
6393 | { | |
6394 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
6395 | } | |
6396 | ||
d291dd49 | 6397 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 6398 | |
d291dd49 JM |
6399 | static void |
6400 | add_pubname (decl, die) | |
6401 | tree decl; | |
6402 | dw_die_ref die; | |
6403 | { | |
6404 | pubname_ref p; | |
6405 | ||
6406 | if (! TREE_PUBLIC (decl)) | |
6407 | return; | |
6408 | ||
6409 | if (pubname_table_in_use == pubname_table_allocated) | |
6410 | { | |
6411 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
6412 | pubname_table = (pubname_ref) xrealloc | |
6413 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
6414 | } | |
71dfc51f | 6415 | |
d291dd49 JM |
6416 | p = &pubname_table[pubname_table_in_use++]; |
6417 | p->die = die; | |
a1d7ffe3 JM |
6418 | |
6419 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
6420 | } |
6421 | ||
a3f97cbb JW |
6422 | /* Output the public names table used to speed up access to externally |
6423 | visible names. For now, only generate entries for externally | |
6424 | visible procedures. */ | |
71dfc51f | 6425 | |
a3f97cbb JW |
6426 | static void |
6427 | output_pubnames () | |
6428 | { | |
d291dd49 | 6429 | register unsigned i; |
71dfc51f RK |
6430 | register unsigned long pubnames_length = size_of_pubnames (); |
6431 | ||
6432 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
6433 | ||
c5cec899 | 6434 | if (flag_debug_asm) |
71dfc51f RK |
6435 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
6436 | ASM_COMMENT_START); | |
6437 | ||
a3f97cbb JW |
6438 | fputc ('\n', asm_out_file); |
6439 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 6440 | |
c5cec899 | 6441 | if (flag_debug_asm) |
71dfc51f RK |
6442 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
6443 | ||
a3f97cbb | 6444 | fputc ('\n', asm_out_file); |
8b790721 | 6445 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 6446 | if (flag_debug_asm) |
71dfc51f RK |
6447 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
6448 | ASM_COMMENT_START); | |
6449 | ||
a3f97cbb | 6450 | fputc ('\n', asm_out_file); |
7e23cb16 | 6451 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 6452 | if (flag_debug_asm) |
71dfc51f RK |
6453 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
6454 | ||
a3f97cbb | 6455 | fputc ('\n', asm_out_file); |
d291dd49 | 6456 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 6457 | { |
d291dd49 | 6458 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 6459 | |
881c6935 | 6460 | /* We shouldn't see pubnames for DIEs outside of the main CU. */ |
1bfb5f8f | 6461 | if (pub->die->die_mark == 0) |
881c6935 JM |
6462 | abort (); |
6463 | ||
7e23cb16 | 6464 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 6465 | if (flag_debug_asm) |
71dfc51f RK |
6466 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
6467 | ||
d291dd49 JM |
6468 | fputc ('\n', asm_out_file); |
6469 | ||
c5cec899 | 6470 | if (flag_debug_asm) |
8d4e65a6 JL |
6471 | { |
6472 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
6473 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
6474 | } | |
6475 | else | |
6476 | { | |
c84e2712 KG |
6477 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, |
6478 | (int) strlen (pub->name) + 1); | |
8d4e65a6 | 6479 | } |
71dfc51f | 6480 | |
d291dd49 | 6481 | fputc ('\n', asm_out_file); |
a3f97cbb | 6482 | } |
71dfc51f | 6483 | |
7e23cb16 | 6484 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
6485 | fputc ('\n', asm_out_file); |
6486 | } | |
6487 | ||
d291dd49 | 6488 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 6489 | |
d291dd49 JM |
6490 | static void |
6491 | add_arange (decl, die) | |
6492 | tree decl; | |
6493 | dw_die_ref die; | |
6494 | { | |
6495 | if (! DECL_SECTION_NAME (decl)) | |
6496 | return; | |
6497 | ||
6498 | if (arange_table_in_use == arange_table_allocated) | |
6499 | { | |
6500 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
6501 | arange_table |
6502 | = (arange_ref) xrealloc (arange_table, | |
6503 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 6504 | } |
71dfc51f | 6505 | |
d291dd49 JM |
6506 | arange_table[arange_table_in_use++] = die; |
6507 | } | |
6508 | ||
a3f97cbb JW |
6509 | /* Output the information that goes into the .debug_aranges table. |
6510 | Namely, define the beginning and ending address range of the | |
6511 | text section generated for this compilation unit. */ | |
71dfc51f | 6512 | |
a3f97cbb JW |
6513 | static void |
6514 | output_aranges () | |
6515 | { | |
d291dd49 | 6516 | register unsigned i; |
71dfc51f RK |
6517 | register unsigned long aranges_length = size_of_aranges (); |
6518 | ||
6519 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 6520 | if (flag_debug_asm) |
71dfc51f RK |
6521 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
6522 | ASM_COMMENT_START); | |
6523 | ||
a3f97cbb JW |
6524 | fputc ('\n', asm_out_file); |
6525 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 6526 | if (flag_debug_asm) |
71dfc51f RK |
6527 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
6528 | ||
a3f97cbb | 6529 | fputc ('\n', asm_out_file); |
8b790721 | 6530 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 6531 | if (flag_debug_asm) |
71dfc51f RK |
6532 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
6533 | ASM_COMMENT_START); | |
6534 | ||
a3f97cbb | 6535 | fputc ('\n', asm_out_file); |
a1a4189d | 6536 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF2_ADDR_SIZE); |
c5cec899 | 6537 | if (flag_debug_asm) |
71dfc51f RK |
6538 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
6539 | ||
a3f97cbb JW |
6540 | fputc ('\n', asm_out_file); |
6541 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6542 | if (flag_debug_asm) |
71dfc51f RK |
6543 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
6544 | ASM_COMMENT_START); | |
6545 | ||
a3f97cbb | 6546 | fputc ('\n', asm_out_file); |
71dfc51f | 6547 | |
262b6384 SC |
6548 | /* We need to align to twice the pointer size here. */ |
6549 | if (DWARF_ARANGES_PAD_SIZE) | |
6550 | { | |
6551 | /* Pad using a 2 bytes word so that padding is correct | |
6552 | for any pointer size. */ | |
6553 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, 0); | |
770ca8c6 | 6554 | for (i = 2; i < (unsigned) DWARF_ARANGES_PAD_SIZE; i += 2) |
556273e0 | 6555 | fprintf (asm_out_file, ",0"); |
262b6384 | 6556 | if (flag_debug_asm) |
556273e0 KH |
6557 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
6558 | ASM_COMMENT_START, 2 * DWARF2_ADDR_SIZE); | |
262b6384 | 6559 | } |
71dfc51f | 6560 | |
a3f97cbb | 6561 | fputc ('\n', asm_out_file); |
8b790721 | 6562 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_section_label); |
c5cec899 | 6563 | if (flag_debug_asm) |
71dfc51f RK |
6564 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
6565 | ||
a3f97cbb | 6566 | fputc ('\n', asm_out_file); |
71208e03 | 6567 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, |
8b790721 | 6568 | text_section_label); |
c5cec899 | 6569 | if (flag_debug_asm) |
71dfc51f RK |
6570 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
6571 | ||
a3f97cbb | 6572 | fputc ('\n', asm_out_file); |
d291dd49 JM |
6573 | for (i = 0; i < arange_table_in_use; ++i) |
6574 | { | |
e689ae67 | 6575 | dw_die_ref die = arange_table[i]; |
71dfc51f | 6576 | |
881c6935 | 6577 | /* We shouldn't see aranges for DIEs outside of the main CU. */ |
1bfb5f8f | 6578 | if (die->die_mark == 0) |
881c6935 JM |
6579 | abort (); |
6580 | ||
e689ae67 JM |
6581 | if (die->die_tag == DW_TAG_subprogram) |
6582 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (die)); | |
d291dd49 | 6583 | else |
a1d7ffe3 | 6584 | { |
e689ae67 JM |
6585 | /* A static variable; extract the symbol from DW_AT_location. |
6586 | Note that this code isn't currently hit, as we only emit | |
6587 | aranges for functions (jason 9/23/99). */ | |
71dfc51f | 6588 | |
e689ae67 JM |
6589 | dw_attr_ref a = get_AT (die, DW_AT_location); |
6590 | dw_loc_descr_ref loc; | |
a96c67ec | 6591 | if (! a || AT_class (a) != dw_val_class_loc) |
e689ae67 JM |
6592 | abort (); |
6593 | ||
a96c67ec | 6594 | loc = AT_loc (a); |
e689ae67 JM |
6595 | if (loc->dw_loc_opc != DW_OP_addr) |
6596 | abort (); | |
6597 | ||
1865dbb5 JM |
6598 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, |
6599 | loc->dw_loc_oprnd1.v.val_addr); | |
a1d7ffe3 | 6600 | } |
71dfc51f | 6601 | |
c5cec899 | 6602 | if (flag_debug_asm) |
71dfc51f RK |
6603 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
6604 | ||
d291dd49 | 6605 | fputc ('\n', asm_out_file); |
e689ae67 JM |
6606 | if (die->die_tag == DW_TAG_subprogram) |
6607 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (die), | |
6608 | get_AT_low_pc (die)); | |
d291dd49 | 6609 | else |
7e23cb16 | 6610 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
e689ae67 | 6611 | get_AT_unsigned (die, DW_AT_byte_size)); |
71dfc51f | 6612 | |
c5cec899 | 6613 | if (flag_debug_asm) |
71dfc51f RK |
6614 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
6615 | ||
d291dd49 JM |
6616 | fputc ('\n', asm_out_file); |
6617 | } | |
71dfc51f | 6618 | |
a3f97cbb | 6619 | /* Output the terminator words. */ |
7e23cb16 | 6620 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 6621 | fputc ('\n', asm_out_file); |
7e23cb16 | 6622 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
6623 | fputc ('\n', asm_out_file); |
6624 | } | |
6625 | ||
0b34cf1e UD |
6626 | |
6627 | /* Data structure containing information about input files. */ | |
6628 | struct file_info | |
6629 | { | |
6630 | char *path; /* Complete file name. */ | |
6631 | char *fname; /* File name part. */ | |
6632 | int length; /* Length of entire string. */ | |
6633 | int file_idx; /* Index in input file table. */ | |
6634 | int dir_idx; /* Index in directory table. */ | |
6635 | }; | |
6636 | ||
6637 | /* Data structure containing information about directories with source | |
6638 | files. */ | |
6639 | struct dir_info | |
6640 | { | |
6641 | char *path; /* Path including directory name. */ | |
6642 | int length; /* Path length. */ | |
6643 | int prefix; /* Index of directory entry which is a prefix. */ | |
6644 | int nbytes; /* Total number of bytes in all file names excluding | |
6645 | paths. */ | |
6646 | int count; /* Number of files in this directory. */ | |
6647 | int dir_idx; /* Index of directory used as base. */ | |
6648 | int used; /* Used in the end? */ | |
6649 | }; | |
6650 | ||
6651 | /* Callback function for file_info comparison. We sort by looking at | |
6652 | the directories in the path. */ | |
6653 | static int | |
6654 | file_info_cmp (p1, p2) | |
6655 | const void *p1; | |
6656 | const void *p2; | |
6657 | { | |
6658 | const struct file_info *s1 = p1; | |
6659 | const struct file_info *s2 = p2; | |
6660 | unsigned char *cp1; | |
6661 | unsigned char *cp2; | |
6662 | ||
6663 | /* Take care of file names without directories. */ | |
6664 | if (s1->path == s1->fname) | |
6665 | return -1; | |
6666 | else if (s2->path == s2->fname) | |
6667 | return 1; | |
6668 | ||
6669 | cp1 = (unsigned char *) s1->path; | |
6670 | cp2 = (unsigned char *) s2->path; | |
6671 | ||
6672 | while (1) | |
6673 | { | |
6674 | ++cp1; | |
6675 | ++cp2; | |
6676 | /* Reached the end of the first path? */ | |
6677 | if (cp1 == (unsigned char *) s1->fname) | |
6678 | /* It doesn't really matter in which order files from the | |
6679 | same directory are sorted in. Therefore don't test for | |
6680 | the second path reaching the end. */ | |
6681 | return -1; | |
6682 | else if (cp2 == (unsigned char *) s2->fname) | |
6683 | return 1; | |
6684 | ||
6685 | /* Character of current path component the same? */ | |
6686 | if (*cp1 != *cp2) | |
6687 | return *cp1 - *cp2; | |
6688 | } | |
6689 | } | |
6690 | ||
e57cabac UD |
6691 | /* Compute the maximum prefix of P2 appearing also in P1. Entire |
6692 | directory names must match. */ | |
6693 | static int prefix_of PARAMS ((struct dir_info *, struct dir_info *)); | |
6694 | static int | |
6695 | prefix_of (p1, p2) | |
6696 | struct dir_info *p1; | |
6697 | struct dir_info *p2; | |
6698 | { | |
6699 | char *s1 = p1->path; | |
6700 | char *s2 = p2->path; | |
6701 | int len = p1->length < p2->length ? p1->length : p2->length; | |
6702 | ||
6703 | while (*s1 == *s2 && s1 < p1->path + len) | |
6704 | ++s1, ++s2; | |
6705 | ||
6706 | if (*s1 == '/' && *s2 == '/') | |
6707 | /* The whole of P1 is the prefix. */ | |
6708 | return p1->length; | |
6709 | ||
6710 | /* Go back to the last directory component. */ | |
6711 | while (s1 > p1->path) | |
6712 | if (*--s1 == '/') | |
6713 | return s1 - p1->path + 1; | |
6714 | ||
6715 | return 0; | |
6716 | } | |
6717 | ||
0b34cf1e UD |
6718 | /* Output the directory table and the file name table. We try to minimize |
6719 | the total amount of memory needed. A heuristic is used to avoid large | |
6720 | slowdowns with many input files. */ | |
6721 | static void | |
6722 | output_file_names () | |
6723 | { | |
6724 | struct file_info *files; | |
6725 | struct dir_info *dirs; | |
6726 | int *saved; | |
6727 | int *savehere; | |
6728 | int *backmap; | |
6729 | int ndirs; | |
6730 | int idx_offset; | |
6731 | int i; | |
6732 | int idx; | |
6733 | ||
6734 | /* Allocate the various arrays we need. */ | |
6735 | files = (struct file_info *) alloca (line_file_table.in_use | |
6736 | * sizeof (struct file_info)); | |
e57cabac | 6737 | dirs = (struct dir_info *) alloca (line_file_table.in_use * 2 |
0b34cf1e UD |
6738 | * sizeof (struct dir_info)); |
6739 | ||
6740 | /* Sort the file names. */ | |
6741 | for (i = 1; i < (int) line_file_table.in_use; ++i) | |
6742 | { | |
6743 | char *f; | |
6744 | ||
6745 | /* Skip all leading "./". */ | |
6746 | f = line_file_table.table[i]; | |
6747 | while (f[0] == '.' && f[1] == '/') | |
6748 | f += 2; | |
6749 | ||
6750 | /* Create a new array entry. */ | |
6751 | files[i].path = f; | |
6752 | files[i].length = strlen (f); | |
6753 | files[i].file_idx = i; | |
6754 | ||
6755 | /* Search for the file name part. */ | |
6756 | f = strrchr (f, '/'); | |
6757 | files[i].fname = f == NULL ? files[i].path : f + 1; | |
6758 | } | |
6759 | qsort (files + 1, line_file_table.in_use - 1, sizeof (files[0]), | |
6760 | file_info_cmp); | |
6761 | ||
6762 | /* Find all the different directories used. */ | |
6763 | dirs[0].path = files[1].path; | |
6764 | dirs[0].length = files[1].fname - files[1].path; | |
6765 | dirs[0].prefix = -1; | |
6766 | dirs[0].nbytes = files[1].length - dirs[1].length + 1; | |
6767 | dirs[0].count = 1; | |
6768 | dirs[0].dir_idx = 0; | |
6769 | dirs[0].used = 0; | |
6770 | files[1].dir_idx = 0; | |
6771 | ndirs = 1; | |
6772 | ||
6773 | for (i = 2; i < (int) line_file_table.in_use; ++i) | |
6774 | if (files[i].fname - files[i].path == dirs[ndirs - 1].length | |
6775 | && memcmp (dirs[ndirs - 1].path, files[i].path, | |
6776 | dirs[ndirs - 1].length) == 0) | |
6777 | { | |
6778 | /* Same directory as last entry. */ | |
6779 | files[i].dir_idx = ndirs - 1; | |
6780 | dirs[ndirs - 1].nbytes += files[i].length - dirs[ndirs - 1].length + 1; | |
6781 | ++dirs[ndirs - 1].count; | |
6782 | } | |
6783 | else | |
6784 | { | |
6785 | int j; | |
e57cabac UD |
6786 | int max_idx; |
6787 | int max_len; | |
0b34cf1e UD |
6788 | |
6789 | /* This is a new directory. */ | |
6790 | dirs[ndirs].path = files[i].path; | |
6791 | dirs[ndirs].length = files[i].fname - files[i].path; | |
6792 | dirs[ndirs].nbytes = files[i].length - dirs[i].length + 1; | |
6793 | dirs[ndirs].count = 1; | |
6794 | dirs[ndirs].dir_idx = ndirs; | |
6795 | dirs[ndirs].used = 0; | |
6796 | files[i].dir_idx = ndirs; | |
6797 | ||
6798 | /* Search for a prefix. */ | |
e57cabac UD |
6799 | max_len = 0; |
6800 | max_idx = 0; | |
0b34cf1e | 6801 | for (j = 0; j < ndirs; ++j) |
e57cabac UD |
6802 | if (dirs[j].length > max_len) |
6803 | { | |
6804 | int this_len = prefix_of (&dirs[j], &dirs[ndirs]); | |
6805 | ||
6806 | if (this_len > max_len) | |
6807 | { | |
6808 | max_len = this_len; | |
6809 | max_idx = j; | |
6810 | } | |
6811 | } | |
6812 | ||
6813 | /* Remember the prefix. If this is a known prefix simply | |
6814 | remember the index. Otherwise we will have to create an | |
6815 | artificial entry. */ | |
6816 | if (max_len == dirs[max_idx].length) | |
6817 | /* This is our prefix. */ | |
6818 | dirs[ndirs].prefix = max_idx; | |
6819 | else if (max_len > 0) | |
6820 | { | |
6821 | /* Create an entry without associated file. Since we have | |
6822 | to keep the dirs array sorted (means, entries with paths | |
6823 | which come first) we have to move the new entry in the | |
6824 | place of the old one. */ | |
6825 | dirs[++ndirs] = dirs[max_idx]; | |
6826 | ||
6827 | /* We don't have to set .path. */ | |
6828 | dirs[max_idx].length = max_len; | |
6829 | dirs[max_idx].nbytes = 0; | |
6830 | dirs[max_idx].count = 0; | |
6831 | dirs[max_idx].dir_idx = ndirs; | |
6832 | dirs[max_idx].used = 0; | |
6833 | dirs[max_idx].prefix = dirs[ndirs].prefix; | |
6834 | ||
6835 | dirs[ndirs - 1].prefix = dirs[ndirs].prefix = max_idx; | |
6836 | } | |
6837 | else | |
6838 | dirs[ndirs].prefix = -1; | |
0b34cf1e UD |
6839 | |
6840 | ++ndirs; | |
6841 | } | |
6842 | ||
6843 | /* Now to the actual work. We have to find a subset of the | |
6844 | directories which allow expressing the file name using references | |
6845 | to the directory table with the least amount of characters. We | |
6846 | do not do an exhaustive search where we would have to check out | |
6847 | every combination of every single possible prefix. Instead we | |
6848 | use a heuristic which provides nearly optimal results in most | |
6849 | cases and never is much off. */ | |
6850 | saved = (int *) alloca (ndirs * sizeof (int)); | |
6851 | savehere = (int *) alloca (ndirs * sizeof (int)); | |
6852 | ||
6853 | memset (saved, '\0', ndirs * sizeof (saved[0])); | |
6854 | for (i = 0; i < ndirs; ++i) | |
6855 | { | |
6856 | int j; | |
6857 | int total; | |
6858 | ||
6859 | /* We can always safe some space for the current directory. But | |
6860 | this does not mean it will be enough to justify adding the | |
6861 | directory. */ | |
6862 | savehere[i] = dirs[i].length; | |
6863 | total = (savehere[i] - saved[i]) * dirs[i].count; | |
6864 | ||
6865 | for (j = i + 1; j < ndirs; ++j) | |
6866 | { | |
6867 | savehere[j] = 0; | |
6868 | ||
6869 | if (saved[j] < dirs[i].length) | |
6870 | { | |
6871 | /* Determine whether the dirs[i] path is a prefix of the | |
6872 | dirs[j] path. */ | |
6873 | int k; | |
6874 | ||
6875 | k = dirs[j].prefix; | |
6876 | while (k != -1 && k != i) | |
6877 | k = dirs[k].prefix; | |
6878 | ||
6879 | if (k == i) | |
6880 | { | |
6881 | /* Yes it is. We can possibly safe some memory but | |
6882 | writing the filenames in dirs[j] relative to | |
6883 | dirs[i]. */ | |
6884 | savehere[j] = dirs[i].length; | |
6885 | total += (savehere[j] - saved[j]) * dirs[j].count; | |
6886 | } | |
6887 | } | |
6888 | } | |
6889 | ||
6890 | /* Check whether we can safe enough to justify adding the dirs[i] | |
6891 | directory. */ | |
6892 | if (total > dirs[i].length + 1) | |
6893 | { | |
6894 | /* It's worthwhile adding. */ | |
6895 | for (j = i; j < ndirs; ++j) | |
6896 | if (savehere[j] > 0) | |
6897 | { | |
6898 | /* Remember how much we saved for this directory so far. */ | |
6899 | saved[j] = savehere[j]; | |
6900 | ||
6901 | /* Remember the prefix directory. */ | |
6902 | dirs[j].dir_idx = i; | |
6903 | } | |
6904 | } | |
6905 | } | |
6906 | ||
6907 | /* We have to emit them in the order they appear in the line_file_table | |
6908 | array since the index is used in the debug info generation. To | |
6909 | do this efficiently we generate a back-mapping of the indices | |
6910 | first. */ | |
6911 | backmap = (int *) alloca (line_file_table.in_use * sizeof (int)); | |
6912 | for (i = 1; i < (int) line_file_table.in_use; ++i) | |
6913 | { | |
6914 | backmap[files[i].file_idx] = i; | |
6915 | /* Mark this directory as used. */ | |
6916 | dirs[dirs[files[i].dir_idx].dir_idx].used = 1; | |
6917 | } | |
6918 | ||
6919 | /* That was it. We are ready to emit the information. First the | |
6920 | directory name table. Here we have to make sure that the first | |
6921 | actually emitted directory name has the index one. Zero is | |
6922 | reserved for the current working directory. Make sure we do not | |
6923 | confuse these indices with the one for the constructed table | |
6924 | (even though most of the time they are identical). */ | |
6925 | idx = 1; | |
e57cabac | 6926 | idx_offset = dirs[0].length > 0 ? 1 : 0; |
0b34cf1e UD |
6927 | for (i = 1 - idx_offset; i < ndirs; ++i) |
6928 | if (dirs[i].used != 0) | |
6929 | { | |
6930 | dirs[i].used = idx++; | |
6931 | ||
6932 | if (flag_debug_asm) | |
6933 | { | |
6934 | ASM_OUTPUT_DWARF_NSTRING (asm_out_file, | |
6935 | dirs[i].path, dirs[i].length - 1); | |
6936 | fprintf (asm_out_file, "%s Directory Entry: 0x%x\n", | |
6937 | ASM_COMMENT_START, dirs[i].used); | |
6938 | } | |
6939 | else | |
6940 | { | |
6941 | ASM_OUTPUT_ASCII (asm_out_file, dirs[i].path, dirs[i].length - 1); | |
6942 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
6943 | fputc ('\n', asm_out_file); | |
6944 | } | |
6945 | } | |
6946 | /* Correct the index for the current working directory entry if it | |
6947 | exists. */ | |
6948 | if (idx_offset == 0) | |
6949 | dirs[0].used = 0; | |
6950 | /* Terminate the directory name array. */ | |
6951 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
6952 | if (flag_debug_asm) | |
6953 | fprintf (asm_out_file, "\t%s End directory table", ASM_COMMENT_START); | |
6954 | fputc ('\n', asm_out_file); | |
6955 | ||
6956 | /* Now write all the file names. */ | |
6957 | for (i = 1; i < (int) line_file_table.in_use; ++i) | |
6958 | { | |
6959 | int file_idx = backmap[i]; | |
6960 | int dir_idx = dirs[files[file_idx].dir_idx].dir_idx; | |
6961 | ||
6962 | if (flag_debug_asm) | |
6963 | { | |
6964 | ASM_OUTPUT_DWARF_STRING (asm_out_file, | |
6965 | files[file_idx].path | |
6966 | + dirs[dir_idx].length); | |
6967 | fprintf (asm_out_file, "%s File Entry: 0x%x\n", | |
6968 | ASM_COMMENT_START, i); | |
6969 | } | |
6970 | else | |
6971 | ASM_OUTPUT_ASCII (asm_out_file, | |
6972 | files[file_idx].path + dirs[dir_idx].length, | |
6973 | (files[file_idx].length | |
6974 | - dirs[dir_idx].length) + 1); | |
6975 | ||
6976 | /* Include directory index. */ | |
6977 | output_uleb128 (dirs[dir_idx].used); | |
6978 | fputc ('\n', asm_out_file); | |
6979 | ||
6980 | /* Modification time. */ | |
6981 | output_uleb128 (0); | |
6982 | fputc ('\n', asm_out_file); | |
6983 | ||
6984 | /* File length in bytes. */ | |
6985 | output_uleb128 (0); | |
6986 | fputc ('\n', asm_out_file); | |
6987 | } | |
6988 | ||
6989 | /* Terminate the file name table */ | |
6990 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
6991 | if (flag_debug_asm) | |
6992 | fprintf (asm_out_file, "\t%s End file name table", ASM_COMMENT_START); | |
6993 | fputc ('\n', asm_out_file); | |
6994 | } | |
6995 | ||
6996 | ||
a3f97cbb | 6997 | /* Output the source line number correspondence information. This |
14a774a9 | 6998 | information goes into the .debug_line section. */ |
71dfc51f | 6999 | |
a3f97cbb JW |
7000 | static void |
7001 | output_line_info () | |
7002 | { | |
a3f97cbb JW |
7003 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
7004 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
7005 | register unsigned opc; | |
7006 | register unsigned n_op_args; | |
a3f97cbb JW |
7007 | register unsigned long lt_index; |
7008 | register unsigned long current_line; | |
7009 | register long line_offset; | |
7010 | register long line_delta; | |
7011 | register unsigned long current_file; | |
e90b62db | 7012 | register unsigned long function; |
71dfc51f | 7013 | |
14a774a9 | 7014 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, ".LTEND", ".LTSTART"); |
c5cec899 | 7015 | if (flag_debug_asm) |
71dfc51f RK |
7016 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
7017 | ASM_COMMENT_START); | |
7018 | ||
a3f97cbb | 7019 | fputc ('\n', asm_out_file); |
14a774a9 | 7020 | ASM_OUTPUT_LABEL (asm_out_file, ".LTSTART"); |
a3f97cbb | 7021 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 7022 | if (flag_debug_asm) |
71dfc51f RK |
7023 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
7024 | ||
a3f97cbb | 7025 | fputc ('\n', asm_out_file); |
7e23cb16 | 7026 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 7027 | if (flag_debug_asm) |
71dfc51f RK |
7028 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
7029 | ||
a3f97cbb JW |
7030 | fputc ('\n', asm_out_file); |
7031 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 7032 | if (flag_debug_asm) |
71dfc51f RK |
7033 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
7034 | ASM_COMMENT_START); | |
7035 | ||
a3f97cbb JW |
7036 | fputc ('\n', asm_out_file); |
7037 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 7038 | if (flag_debug_asm) |
71dfc51f RK |
7039 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
7040 | ASM_COMMENT_START); | |
7041 | ||
a3f97cbb | 7042 | fputc ('\n', asm_out_file); |
e8638df0 | 7043 | fprintf (asm_out_file, "%s%d", ASM_BYTE_OP, DWARF_LINE_BASE); |
c5cec899 | 7044 | if (flag_debug_asm) |
71dfc51f RK |
7045 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
7046 | ASM_COMMENT_START); | |
7047 | ||
a3f97cbb | 7048 | fputc ('\n', asm_out_file); |
e8638df0 | 7049 | fprintf (asm_out_file, "%s%u", ASM_BYTE_OP, DWARF_LINE_RANGE); |
c5cec899 | 7050 | if (flag_debug_asm) |
71dfc51f RK |
7051 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
7052 | ASM_COMMENT_START); | |
7053 | ||
a3f97cbb | 7054 | fputc ('\n', asm_out_file); |
e8638df0 | 7055 | fprintf (asm_out_file, "%s%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); |
c5cec899 | 7056 | if (flag_debug_asm) |
71dfc51f RK |
7057 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
7058 | ||
a3f97cbb JW |
7059 | fputc ('\n', asm_out_file); |
7060 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
7061 | { | |
7062 | switch (opc) | |
7063 | { | |
7064 | case DW_LNS_advance_pc: | |
7065 | case DW_LNS_advance_line: | |
7066 | case DW_LNS_set_file: | |
7067 | case DW_LNS_set_column: | |
7068 | case DW_LNS_fixed_advance_pc: | |
7069 | n_op_args = 1; | |
7070 | break; | |
7071 | default: | |
7072 | n_op_args = 0; | |
7073 | break; | |
7074 | } | |
7075 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 7076 | if (flag_debug_asm) |
71dfc51f RK |
7077 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
7078 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
7079 | fputc ('\n', asm_out_file); |
7080 | } | |
71dfc51f | 7081 | |
0b34cf1e UD |
7082 | /* Write out the information about the files we use. */ |
7083 | output_file_names (); | |
a3f97cbb | 7084 | |
2f22d404 JM |
7085 | /* We used to set the address register to the first location in the text |
7086 | section here, but that didn't accomplish anything since we already | |
7087 | have a line note for the opening brace of the first function. */ | |
a3f97cbb JW |
7088 | |
7089 | /* Generate the line number to PC correspondence table, encoded as | |
7090 | a series of state machine operations. */ | |
7091 | current_file = 1; | |
7092 | current_line = 1; | |
8b790721 | 7093 | strcpy (prev_line_label, text_section_label); |
a3f97cbb JW |
7094 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
7095 | { | |
2f22d404 JM |
7096 | register dw_line_info_ref line_info = &line_info_table[lt_index]; |
7097 | ||
10a11b75 JM |
7098 | #if 0 |
7099 | /* Disable this optimization for now; GDB wants to see two line notes | |
7100 | at the beginning of a function so it can find the end of the | |
7101 | prologue. */ | |
7102 | ||
2f22d404 JM |
7103 | /* Don't emit anything for redundant notes. Just updating the |
7104 | address doesn't accomplish anything, because we already assume | |
7105 | that anything after the last address is this line. */ | |
7106 | if (line_info->dw_line_num == current_line | |
7107 | && line_info->dw_file_num == current_file) | |
7108 | continue; | |
10a11b75 | 7109 | #endif |
71dfc51f | 7110 | |
f19a6894 JW |
7111 | /* Emit debug info for the address of the current line, choosing |
7112 | the encoding that uses the least amount of space. */ | |
7113 | /* ??? Unfortunately, we have little choice here currently, and must | |
7114 | always use the most general form. Gcc does not know the address | |
7115 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
7116 | dwarf2 aware assemblers at this time, so we can't use any special | |
7117 | pseudo ops that would allow the assembler to optimally encode this for | |
7118 | us. Many ports do have length attributes which will give an upper | |
7119 | bound on the address range. We could perhaps use length attributes | |
7120 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 7121 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
7122 | if (0) |
7123 | { | |
7124 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
7125 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 7126 | if (flag_debug_asm) |
f19a6894 JW |
7127 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
7128 | ASM_COMMENT_START); | |
7129 | ||
7130 | fputc ('\n', asm_out_file); | |
7131 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
7132 | fputc ('\n', asm_out_file); | |
7133 | } | |
7134 | else | |
7135 | { | |
a1a4189d JB |
7136 | /* This can handle any delta. This takes |
7137 | 4+DWARF2_ADDR_SIZE bytes. */ | |
f19a6894 | 7138 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 7139 | if (flag_debug_asm) |
f19a6894 JW |
7140 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
7141 | ASM_COMMENT_START); | |
7142 | fputc ('\n', asm_out_file); | |
a1a4189d | 7143 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
7144 | fputc ('\n', asm_out_file); |
7145 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
7146 | fputc ('\n', asm_out_file); | |
7147 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
7148 | fputc ('\n', asm_out_file); | |
7149 | } | |
7150 | strcpy (prev_line_label, line_label); | |
7151 | ||
7152 | /* Emit debug info for the source file of the current line, if | |
7153 | different from the previous line. */ | |
a3f97cbb JW |
7154 | if (line_info->dw_file_num != current_file) |
7155 | { | |
7156 | current_file = line_info->dw_file_num; | |
7157 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 7158 | if (flag_debug_asm) |
71dfc51f RK |
7159 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
7160 | ||
a3f97cbb JW |
7161 | fputc ('\n', asm_out_file); |
7162 | output_uleb128 (current_file); | |
c5cec899 | 7163 | if (flag_debug_asm) |
2e18bbae RH |
7164 | fprintf (asm_out_file, " (\"%s\")", |
7165 | line_file_table.table[current_file]); | |
71dfc51f | 7166 | |
a3f97cbb JW |
7167 | fputc ('\n', asm_out_file); |
7168 | } | |
71dfc51f | 7169 | |
f19a6894 JW |
7170 | /* Emit debug info for the current line number, choosing the encoding |
7171 | that uses the least amount of space. */ | |
2f22d404 | 7172 | if (line_info->dw_line_num != current_line) |
a3f97cbb | 7173 | { |
2f22d404 JM |
7174 | line_offset = line_info->dw_line_num - current_line; |
7175 | line_delta = line_offset - DWARF_LINE_BASE; | |
7176 | current_line = line_info->dw_line_num; | |
7177 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
7178 | { | |
7179 | /* This can handle deltas from -10 to 234, using the current | |
7180 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
7181 | takes 1 byte. */ | |
7182 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
7183 | DWARF_LINE_OPCODE_BASE + line_delta); | |
7184 | if (flag_debug_asm) | |
7185 | fprintf (asm_out_file, | |
7186 | "\t%s line %ld", ASM_COMMENT_START, current_line); | |
71dfc51f | 7187 | |
2f22d404 JM |
7188 | fputc ('\n', asm_out_file); |
7189 | } | |
7190 | else | |
7191 | { | |
7192 | /* This can handle any delta. This takes at least 4 bytes, | |
7193 | depending on the value being encoded. */ | |
7194 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
7195 | if (flag_debug_asm) | |
7196 | fprintf (asm_out_file, "\t%s advance to line %ld", | |
7197 | ASM_COMMENT_START, current_line); | |
7198 | ||
7199 | fputc ('\n', asm_out_file); | |
7200 | output_sleb128 (line_offset); | |
7201 | fputc ('\n', asm_out_file); | |
7202 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
7203 | if (flag_debug_asm) | |
7204 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
7205 | fputc ('\n', asm_out_file); | |
7206 | } | |
a94dbf2c JM |
7207 | } |
7208 | else | |
7209 | { | |
2f22d404 | 7210 | /* We still need to start a new row, so output a copy insn. */ |
a94dbf2c | 7211 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); |
2f22d404 JM |
7212 | if (flag_debug_asm) |
7213 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
a94dbf2c | 7214 | fputc ('\n', asm_out_file); |
a3f97cbb | 7215 | } |
a3f97cbb JW |
7216 | } |
7217 | ||
f19a6894 JW |
7218 | /* Emit debug info for the address of the end of the function. */ |
7219 | if (0) | |
7220 | { | |
7221 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 7222 | if (flag_debug_asm) |
f19a6894 JW |
7223 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
7224 | ASM_COMMENT_START); | |
71dfc51f | 7225 | |
f19a6894 JW |
7226 | fputc ('\n', asm_out_file); |
7227 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
7228 | fputc ('\n', asm_out_file); | |
7229 | } | |
7230 | else | |
7231 | { | |
7232 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 7233 | if (flag_debug_asm) |
f19a6894 JW |
7234 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
7235 | fputc ('\n', asm_out_file); | |
a1a4189d | 7236 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
7237 | fputc ('\n', asm_out_file); |
7238 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
7239 | fputc ('\n', asm_out_file); | |
7240 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
7241 | fputc ('\n', asm_out_file); | |
7242 | } | |
bdb669cb | 7243 | |
a3f97cbb | 7244 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 7245 | if (flag_debug_asm) |
71dfc51f RK |
7246 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
7247 | ||
a3f97cbb JW |
7248 | fputc ('\n', asm_out_file); |
7249 | output_uleb128 (1); | |
7250 | fputc ('\n', asm_out_file); | |
7251 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
7252 | fputc ('\n', asm_out_file); | |
e90b62db JM |
7253 | |
7254 | function = 0; | |
7255 | current_file = 1; | |
7256 | current_line = 1; | |
556273e0 | 7257 | for (lt_index = 0; lt_index < separate_line_info_table_in_use;) |
e90b62db JM |
7258 | { |
7259 | register dw_separate_line_info_ref line_info | |
7260 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 7261 | |
10a11b75 | 7262 | #if 0 |
2f22d404 JM |
7263 | /* Don't emit anything for redundant notes. */ |
7264 | if (line_info->dw_line_num == current_line | |
7265 | && line_info->dw_file_num == current_file | |
7266 | && line_info->function == function) | |
7267 | goto cont; | |
10a11b75 | 7268 | #endif |
2f22d404 | 7269 | |
f19a6894 JW |
7270 | /* Emit debug info for the address of the current line. If this is |
7271 | a new function, or the first line of a function, then we need | |
7272 | to handle it differently. */ | |
5c90448c JM |
7273 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
7274 | lt_index); | |
e90b62db JM |
7275 | if (function != line_info->function) |
7276 | { | |
7277 | function = line_info->function; | |
71dfc51f | 7278 | |
e90b62db JM |
7279 | /* Set the address register to the first line in the function */ |
7280 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 7281 | if (flag_debug_asm) |
e90b62db JM |
7282 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
7283 | ASM_COMMENT_START); | |
71dfc51f | 7284 | |
e90b62db | 7285 | fputc ('\n', asm_out_file); |
a1a4189d | 7286 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
e90b62db JM |
7287 | fputc ('\n', asm_out_file); |
7288 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
7289 | fputc ('\n', asm_out_file); | |
7290 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
7291 | fputc ('\n', asm_out_file); | |
7292 | } | |
7293 | else | |
7294 | { | |
f19a6894 JW |
7295 | /* ??? See the DW_LNS_advance_pc comment above. */ |
7296 | if (0) | |
7297 | { | |
7298 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 7299 | if (flag_debug_asm) |
f19a6894 JW |
7300 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
7301 | ASM_COMMENT_START); | |
71dfc51f | 7302 | |
f19a6894 JW |
7303 | fputc ('\n', asm_out_file); |
7304 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
7305 | prev_line_label); | |
7306 | fputc ('\n', asm_out_file); | |
7307 | } | |
7308 | else | |
7309 | { | |
7310 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 7311 | if (flag_debug_asm) |
f19a6894 JW |
7312 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
7313 | ASM_COMMENT_START); | |
7314 | fputc ('\n', asm_out_file); | |
a1a4189d | 7315 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
7316 | fputc ('\n', asm_out_file); |
7317 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
7318 | fputc ('\n', asm_out_file); | |
7319 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
7320 | fputc ('\n', asm_out_file); | |
7321 | } | |
e90b62db | 7322 | } |
f19a6894 | 7323 | strcpy (prev_line_label, line_label); |
71dfc51f | 7324 | |
f19a6894 JW |
7325 | /* Emit debug info for the source file of the current line, if |
7326 | different from the previous line. */ | |
e90b62db JM |
7327 | if (line_info->dw_file_num != current_file) |
7328 | { | |
7329 | current_file = line_info->dw_file_num; | |
7330 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 7331 | if (flag_debug_asm) |
71dfc51f RK |
7332 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
7333 | ||
e90b62db JM |
7334 | fputc ('\n', asm_out_file); |
7335 | output_uleb128 (current_file); | |
c5cec899 | 7336 | if (flag_debug_asm) |
2e18bbae RH |
7337 | fprintf (asm_out_file, " (\"%s\")", |
7338 | line_file_table.table[current_file]); | |
71dfc51f | 7339 | |
e90b62db JM |
7340 | fputc ('\n', asm_out_file); |
7341 | } | |
71dfc51f | 7342 | |
f19a6894 JW |
7343 | /* Emit debug info for the current line number, choosing the encoding |
7344 | that uses the least amount of space. */ | |
e90b62db JM |
7345 | if (line_info->dw_line_num != current_line) |
7346 | { | |
7347 | line_offset = line_info->dw_line_num - current_line; | |
7348 | line_delta = line_offset - DWARF_LINE_BASE; | |
7349 | current_line = line_info->dw_line_num; | |
7350 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
7351 | { | |
7352 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
7353 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 7354 | if (flag_debug_asm) |
71dfc51f | 7355 | fprintf (asm_out_file, |
2d8b0f3a | 7356 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 7357 | |
e90b62db JM |
7358 | fputc ('\n', asm_out_file); |
7359 | } | |
7360 | else | |
7361 | { | |
7362 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 7363 | if (flag_debug_asm) |
2d8b0f3a | 7364 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
7365 | ASM_COMMENT_START, current_line); |
7366 | ||
e90b62db JM |
7367 | fputc ('\n', asm_out_file); |
7368 | output_sleb128 (line_offset); | |
7369 | fputc ('\n', asm_out_file); | |
7370 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
2f22d404 JM |
7371 | if (flag_debug_asm) |
7372 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
e90b62db JM |
7373 | fputc ('\n', asm_out_file); |
7374 | } | |
7375 | } | |
2f22d404 JM |
7376 | else |
7377 | { | |
7378 | /* We still need to start a new row, so output a copy insn. */ | |
7379 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
7380 | if (flag_debug_asm) | |
7381 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
7382 | fputc ('\n', asm_out_file); | |
7383 | } | |
71dfc51f | 7384 | |
10a11b75 | 7385 | #if 0 |
2f22d404 | 7386 | cont: |
10a11b75 | 7387 | #endif |
e90b62db | 7388 | ++lt_index; |
e90b62db JM |
7389 | |
7390 | /* If we're done with a function, end its sequence. */ | |
7391 | if (lt_index == separate_line_info_table_in_use | |
7392 | || separate_line_info_table[lt_index].function != function) | |
7393 | { | |
7394 | current_file = 1; | |
7395 | current_line = 1; | |
71dfc51f | 7396 | |
f19a6894 | 7397 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 7398 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
7399 | if (0) |
7400 | { | |
7401 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 7402 | if (flag_debug_asm) |
f19a6894 JW |
7403 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
7404 | ASM_COMMENT_START); | |
7405 | ||
7406 | fputc ('\n', asm_out_file); | |
7407 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
7408 | prev_line_label); | |
7409 | fputc ('\n', asm_out_file); | |
7410 | } | |
7411 | else | |
7412 | { | |
7413 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 7414 | if (flag_debug_asm) |
f19a6894 JW |
7415 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
7416 | ASM_COMMENT_START); | |
7417 | fputc ('\n', asm_out_file); | |
a1a4189d | 7418 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
7419 | fputc ('\n', asm_out_file); |
7420 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
7421 | fputc ('\n', asm_out_file); | |
7422 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
7423 | fputc ('\n', asm_out_file); | |
7424 | } | |
e90b62db JM |
7425 | |
7426 | /* Output the marker for the end of this sequence. */ | |
7427 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 7428 | if (flag_debug_asm) |
e90b62db JM |
7429 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
7430 | ASM_COMMENT_START); | |
71dfc51f | 7431 | |
e90b62db JM |
7432 | fputc ('\n', asm_out_file); |
7433 | output_uleb128 (1); | |
7434 | fputc ('\n', asm_out_file); | |
7435 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
7436 | fputc ('\n', asm_out_file); | |
7437 | } | |
7438 | } | |
f19f17e0 JM |
7439 | |
7440 | /* Output the marker for the end of the line number info. */ | |
7441 | ASM_OUTPUT_LABEL (asm_out_file, ".LTEND"); | |
a3f97cbb JW |
7442 | } |
7443 | \f | |
a3f97cbb JW |
7444 | /* Given a pointer to a tree node for some base type, return a pointer to |
7445 | a DIE that describes the given type. | |
7446 | ||
7447 | This routine must only be called for GCC type nodes that correspond to | |
7448 | Dwarf base (fundamental) types. */ | |
71dfc51f | 7449 | |
a3f97cbb JW |
7450 | static dw_die_ref |
7451 | base_type_die (type) | |
7452 | register tree type; | |
7453 | { | |
a9d38797 | 7454 | register dw_die_ref base_type_result; |
ec0ce6e2 | 7455 | register const char *type_name; |
a9d38797 | 7456 | register enum dwarf_type encoding; |
71dfc51f | 7457 | register tree name = TYPE_NAME (type); |
a3f97cbb | 7458 | |
a9d38797 JM |
7459 | if (TREE_CODE (type) == ERROR_MARK |
7460 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
7461 | return 0; |
7462 | ||
405f63da MM |
7463 | if (name) |
7464 | { | |
7465 | if (TREE_CODE (name) == TYPE_DECL) | |
7466 | name = DECL_NAME (name); | |
7467 | ||
7468 | type_name = IDENTIFIER_POINTER (name); | |
7469 | } | |
7470 | else | |
7471 | type_name = "__unknown__"; | |
a9d38797 | 7472 | |
a3f97cbb JW |
7473 | switch (TREE_CODE (type)) |
7474 | { | |
a3f97cbb | 7475 | case INTEGER_TYPE: |
a9d38797 | 7476 | /* Carefully distinguish the C character types, without messing |
a3f97cbb | 7477 | up if the language is not C. Note that we check only for the names |
556273e0 | 7478 | that contain spaces; other names might occur by coincidence in other |
a3f97cbb | 7479 | languages. */ |
a9d38797 JM |
7480 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
7481 | && (type == char_type_node | |
7482 | || ! strcmp (type_name, "signed char") | |
7483 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 7484 | { |
a9d38797 JM |
7485 | if (TREE_UNSIGNED (type)) |
7486 | encoding = DW_ATE_unsigned; | |
7487 | else | |
7488 | encoding = DW_ATE_signed; | |
7489 | break; | |
a3f97cbb | 7490 | } |
556273e0 | 7491 | /* else fall through. */ |
a3f97cbb | 7492 | |
a9d38797 JM |
7493 | case CHAR_TYPE: |
7494 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
7495 | if (TREE_UNSIGNED (type)) | |
7496 | encoding = DW_ATE_unsigned_char; | |
7497 | else | |
7498 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
7499 | break; |
7500 | ||
7501 | case REAL_TYPE: | |
a9d38797 | 7502 | encoding = DW_ATE_float; |
a3f97cbb JW |
7503 | break; |
7504 | ||
405f63da MM |
7505 | /* Dwarf2 doesn't know anything about complex ints, so use |
7506 | a user defined type for it. */ | |
a3f97cbb | 7507 | case COMPLEX_TYPE: |
405f63da MM |
7508 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
7509 | encoding = DW_ATE_complex_float; | |
7510 | else | |
7511 | encoding = DW_ATE_lo_user; | |
a3f97cbb JW |
7512 | break; |
7513 | ||
7514 | case BOOLEAN_TYPE: | |
a9d38797 JM |
7515 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
7516 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
7517 | break; |
7518 | ||
7519 | default: | |
a9d38797 | 7520 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
7521 | } |
7522 | ||
a9d38797 | 7523 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
14a774a9 RK |
7524 | if (demangle_name_func) |
7525 | type_name = (*demangle_name_func) (type_name); | |
7526 | ||
a9d38797 JM |
7527 | add_AT_string (base_type_result, DW_AT_name, type_name); |
7528 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 7529 | int_size_in_bytes (type)); |
a9d38797 | 7530 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
7531 | |
7532 | return base_type_result; | |
7533 | } | |
7534 | ||
7535 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
7536 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
7537 | a given type is generally the same as the given type, except that if the | |
7538 | given type is a pointer or reference type, then the root type of the given | |
7539 | type is the root type of the "basis" type for the pointer or reference | |
7540 | type. (This definition of the "root" type is recursive.) Also, the root | |
7541 | type of a `const' qualified type or a `volatile' qualified type is the | |
7542 | root type of the given type without the qualifiers. */ | |
71dfc51f | 7543 | |
a3f97cbb JW |
7544 | static tree |
7545 | root_type (type) | |
7546 | register tree type; | |
7547 | { | |
7548 | if (TREE_CODE (type) == ERROR_MARK) | |
7549 | return error_mark_node; | |
7550 | ||
7551 | switch (TREE_CODE (type)) | |
7552 | { | |
7553 | case ERROR_MARK: | |
7554 | return error_mark_node; | |
7555 | ||
7556 | case POINTER_TYPE: | |
7557 | case REFERENCE_TYPE: | |
7558 | return type_main_variant (root_type (TREE_TYPE (type))); | |
7559 | ||
7560 | default: | |
7561 | return type_main_variant (type); | |
7562 | } | |
7563 | } | |
7564 | ||
7565 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
7566 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
7567 | |
7568 | static inline int | |
a3f97cbb JW |
7569 | is_base_type (type) |
7570 | register tree type; | |
7571 | { | |
7572 | switch (TREE_CODE (type)) | |
7573 | { | |
7574 | case ERROR_MARK: | |
7575 | case VOID_TYPE: | |
7576 | case INTEGER_TYPE: | |
7577 | case REAL_TYPE: | |
7578 | case COMPLEX_TYPE: | |
7579 | case BOOLEAN_TYPE: | |
7580 | case CHAR_TYPE: | |
7581 | return 1; | |
7582 | ||
7583 | case SET_TYPE: | |
7584 | case ARRAY_TYPE: | |
7585 | case RECORD_TYPE: | |
7586 | case UNION_TYPE: | |
7587 | case QUAL_UNION_TYPE: | |
7588 | case ENUMERAL_TYPE: | |
7589 | case FUNCTION_TYPE: | |
7590 | case METHOD_TYPE: | |
7591 | case POINTER_TYPE: | |
7592 | case REFERENCE_TYPE: | |
7593 | case FILE_TYPE: | |
7594 | case OFFSET_TYPE: | |
7595 | case LANG_TYPE: | |
604bb87d | 7596 | case VECTOR_TYPE: |
a3f97cbb JW |
7597 | return 0; |
7598 | ||
7599 | default: | |
7600 | abort (); | |
7601 | } | |
71dfc51f | 7602 | |
a3f97cbb JW |
7603 | return 0; |
7604 | } | |
7605 | ||
7606 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
7607 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 7608 | |
a3f97cbb JW |
7609 | static dw_die_ref |
7610 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
7611 | register tree type; | |
7612 | register int is_const_type; | |
7613 | register int is_volatile_type; | |
7614 | register dw_die_ref context_die; | |
7615 | { | |
7616 | register enum tree_code code = TREE_CODE (type); | |
7617 | register dw_die_ref mod_type_die = NULL; | |
7618 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 7619 | register tree item_type = NULL; |
a3f97cbb JW |
7620 | |
7621 | if (code != ERROR_MARK) | |
7622 | { | |
a94dbf2c | 7623 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
7624 | |
7625 | mod_type_die = lookup_type_die (type); | |
7626 | if (mod_type_die) | |
7627 | return mod_type_die; | |
7628 | ||
556273e0 | 7629 | /* Handle C typedef types. */ |
a94dbf2c JM |
7630 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7631 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
7632 | { | |
7633 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
7634 | if (type == dtype) | |
7635 | { | |
7636 | /* For a named type, use the typedef. */ | |
7637 | gen_type_die (type, context_die); | |
7638 | mod_type_die = lookup_type_die (type); | |
7639 | } | |
71dfc51f | 7640 | |
a94dbf2c JM |
7641 | else if (is_const_type < TYPE_READONLY (dtype) |
7642 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
7643 | /* cv-unqualified version of named type. Just use the unnamed | |
7644 | type to which it refers. */ | |
71dfc51f RK |
7645 | mod_type_die |
7646 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
7647 | is_const_type, is_volatile_type, | |
7648 | context_die); | |
7649 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
7650 | } |
7651 | ||
7652 | if (mod_type_die) | |
556273e0 KH |
7653 | /* OK. */ |
7654 | ; | |
a94dbf2c | 7655 | else if (is_const_type) |
a3f97cbb | 7656 | { |
ab72d377 | 7657 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 7658 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
7659 | } |
7660 | else if (is_volatile_type) | |
7661 | { | |
ab72d377 | 7662 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 7663 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
7664 | } |
7665 | else if (code == POINTER_TYPE) | |
7666 | { | |
ab72d377 | 7667 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 7668 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 7669 | #if 0 |
a3f97cbb | 7670 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 7671 | #endif |
a3f97cbb | 7672 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
7673 | } |
7674 | else if (code == REFERENCE_TYPE) | |
7675 | { | |
ab72d377 | 7676 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 7677 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 7678 | #if 0 |
a3f97cbb | 7679 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
556273e0 | 7680 | #endif |
a3f97cbb | 7681 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
7682 | } |
7683 | else if (is_base_type (type)) | |
71dfc51f | 7684 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
7685 | else |
7686 | { | |
4b674448 JM |
7687 | gen_type_die (type, context_die); |
7688 | ||
a3f97cbb JW |
7689 | /* We have to get the type_main_variant here (and pass that to the |
7690 | `lookup_type_die' routine) because the ..._TYPE node we have | |
7691 | might simply be a *copy* of some original type node (where the | |
7692 | copy was created to help us keep track of typedef names) and | |
7693 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 7694 | ..._TYPE node. */ |
a3f97cbb | 7695 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
7696 | if (mod_type_die == NULL) |
7697 | abort (); | |
a3f97cbb JW |
7698 | } |
7699 | } | |
71dfc51f | 7700 | |
dfcf9891 JW |
7701 | equate_type_number_to_die (type, mod_type_die); |
7702 | if (item_type) | |
71dfc51f RK |
7703 | /* We must do this after the equate_type_number_to_die call, in case |
7704 | this is a recursive type. This ensures that the modified_type_die | |
7705 | recursion will terminate even if the type is recursive. Recursive | |
7706 | types are possible in Ada. */ | |
7707 | sub_die = modified_type_die (item_type, | |
7708 | TYPE_READONLY (item_type), | |
7709 | TYPE_VOLATILE (item_type), | |
7710 | context_die); | |
7711 | ||
a3f97cbb | 7712 | if (sub_die != NULL) |
71dfc51f RK |
7713 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
7714 | ||
a3f97cbb JW |
7715 | return mod_type_die; |
7716 | } | |
7717 | ||
a3f97cbb JW |
7718 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
7719 | an enumerated type. */ | |
71dfc51f RK |
7720 | |
7721 | static inline int | |
a3f97cbb JW |
7722 | type_is_enum (type) |
7723 | register tree type; | |
7724 | { | |
7725 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
7726 | } | |
7727 | ||
7d9d8943 AM |
7728 | /* Return the register number described by a given RTL node. */ |
7729 | ||
7730 | static unsigned int | |
7731 | reg_number (rtl) | |
7732 | register rtx rtl; | |
7733 | { | |
7734 | register unsigned regno = REGNO (rtl); | |
7735 | ||
7736 | if (regno >= FIRST_PSEUDO_REGISTER) | |
7737 | { | |
7738 | warning ("internal regno botch: regno = %d\n", regno); | |
7739 | regno = 0; | |
7740 | } | |
7741 | ||
7742 | regno = DBX_REGISTER_NUMBER (regno); | |
7743 | return regno; | |
7744 | } | |
7745 | ||
a3f97cbb | 7746 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 7747 | |
a3f97cbb JW |
7748 | static dw_loc_descr_ref |
7749 | reg_loc_descriptor (rtl) | |
7750 | register rtx rtl; | |
7751 | { | |
7752 | register dw_loc_descr_ref loc_result = NULL; | |
7753 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 7754 | |
85066503 | 7755 | if (reg <= 31) |
71dfc51f | 7756 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 7757 | else |
71dfc51f RK |
7758 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
7759 | ||
a3f97cbb JW |
7760 | return loc_result; |
7761 | } | |
7762 | ||
d8041cc8 RH |
7763 | /* Return a location descriptor that designates a constant. */ |
7764 | ||
7765 | static dw_loc_descr_ref | |
7766 | int_loc_descriptor (i) | |
7767 | HOST_WIDE_INT i; | |
7768 | { | |
7769 | enum dwarf_location_atom op; | |
7770 | ||
7771 | /* Pick the smallest representation of a constant, rather than just | |
7772 | defaulting to the LEB encoding. */ | |
7773 | if (i >= 0) | |
7774 | { | |
7775 | if (i <= 31) | |
7776 | op = DW_OP_lit0 + i; | |
7777 | else if (i <= 0xff) | |
7778 | op = DW_OP_const1u; | |
7779 | else if (i <= 0xffff) | |
7780 | op = DW_OP_const2u; | |
7781 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
7782 | || i <= 0xffffffff) | |
7783 | op = DW_OP_const4u; | |
7784 | else | |
7785 | op = DW_OP_constu; | |
7786 | } | |
7787 | else | |
7788 | { | |
7789 | if (i >= -0x80) | |
7790 | op = DW_OP_const1s; | |
7791 | else if (i >= -0x8000) | |
7792 | op = DW_OP_const2s; | |
7793 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
7794 | || i >= -0x80000000) | |
7795 | op = DW_OP_const4s; | |
7796 | else | |
7797 | op = DW_OP_consts; | |
7798 | } | |
7799 | ||
7800 | return new_loc_descr (op, i, 0); | |
7801 | } | |
7802 | ||
a3f97cbb | 7803 | /* Return a location descriptor that designates a base+offset location. */ |
71dfc51f | 7804 | |
a3f97cbb JW |
7805 | static dw_loc_descr_ref |
7806 | based_loc_descr (reg, offset) | |
7807 | unsigned reg; | |
7808 | long int offset; | |
7809 | { | |
7810 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
7811 | /* For the "frame base", we use the frame pointer or stack pointer |
7812 | registers, since the RTL for local variables is relative to one of | |
7813 | them. */ | |
7814 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 7815 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 7816 | : STACK_POINTER_REGNUM); |
71dfc51f | 7817 | |
a3f97cbb | 7818 | if (reg == fp_reg) |
71dfc51f | 7819 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 7820 | else if (reg <= 31) |
71dfc51f | 7821 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 7822 | else |
71dfc51f RK |
7823 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
7824 | ||
a3f97cbb JW |
7825 | return loc_result; |
7826 | } | |
7827 | ||
7828 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
7829 | |
7830 | static inline int | |
a3f97cbb JW |
7831 | is_based_loc (rtl) |
7832 | register rtx rtl; | |
7833 | { | |
71dfc51f RK |
7834 | return (GET_CODE (rtl) == PLUS |
7835 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
7836 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
7837 | } |
7838 | ||
7839 | /* The following routine converts the RTL for a variable or parameter | |
7840 | (resident in memory) into an equivalent Dwarf representation of a | |
7841 | mechanism for getting the address of that same variable onto the top of a | |
7842 | hypothetical "address evaluation" stack. | |
71dfc51f | 7843 | |
a3f97cbb JW |
7844 | When creating memory location descriptors, we are effectively transforming |
7845 | the RTL for a memory-resident object into its Dwarf postfix expression | |
7846 | equivalent. This routine recursively descends an RTL tree, turning | |
e60d4d7b JL |
7847 | it into Dwarf postfix code as it goes. |
7848 | ||
7849 | MODE is the mode of the memory reference, needed to handle some | |
7850 | autoincrement addressing modes. */ | |
71dfc51f | 7851 | |
a3f97cbb | 7852 | static dw_loc_descr_ref |
e60d4d7b | 7853 | mem_loc_descriptor (rtl, mode) |
a3f97cbb | 7854 | register rtx rtl; |
e60d4d7b | 7855 | enum machine_mode mode; |
a3f97cbb JW |
7856 | { |
7857 | dw_loc_descr_ref mem_loc_result = NULL; | |
556273e0 | 7858 | /* Note that for a dynamically sized array, the location we will generate a |
a3f97cbb JW |
7859 | description of here will be the lowest numbered location which is |
7860 | actually within the array. That's *not* necessarily the same as the | |
7861 | zeroth element of the array. */ | |
71dfc51f | 7862 | |
1865dbb5 JM |
7863 | #ifdef ASM_SIMPLIFY_DWARF_ADDR |
7864 | rtl = ASM_SIMPLIFY_DWARF_ADDR (rtl); | |
7865 | #endif | |
7866 | ||
a3f97cbb JW |
7867 | switch (GET_CODE (rtl)) |
7868 | { | |
e60d4d7b JL |
7869 | case POST_INC: |
7870 | case POST_DEC: | |
e2134eea | 7871 | case POST_MODIFY: |
e60d4d7b JL |
7872 | /* POST_INC and POST_DEC can be handled just like a SUBREG. So we |
7873 | just fall into the SUBREG code. */ | |
7874 | ||
556273e0 | 7875 | /* Fall through. */ |
e60d4d7b | 7876 | |
a3f97cbb JW |
7877 | case SUBREG: |
7878 | /* The case of a subreg may arise when we have a local (register) | |
7879 | variable or a formal (register) parameter which doesn't quite fill | |
7880 | up an entire register. For now, just assume that it is | |
7881 | legitimate to make the Dwarf info refer to the whole register which | |
7882 | contains the given subreg. */ | |
7883 | rtl = XEXP (rtl, 0); | |
71dfc51f | 7884 | |
556273e0 | 7885 | /* Fall through. */ |
a3f97cbb JW |
7886 | |
7887 | case REG: | |
7888 | /* Whenever a register number forms a part of the description of the | |
7889 | method for calculating the (dynamic) address of a memory resident | |
556273e0 | 7890 | object, DWARF rules require the register number be referred to as |
a3f97cbb JW |
7891 | a "base register". This distinction is not based in any way upon |
7892 | what category of register the hardware believes the given register | |
7893 | belongs to. This is strictly DWARF terminology we're dealing with | |
7894 | here. Note that in cases where the location of a memory-resident | |
7895 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
7896 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
7897 | may just be OP_BASEREG (basereg). This may look deceptively like | |
7898 | the object in question was allocated to a register (rather than in | |
7899 | memory) so DWARF consumers need to be aware of the subtle | |
7900 | distinction between OP_REG and OP_BASEREG. */ | |
7901 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
7902 | break; | |
7903 | ||
7904 | case MEM: | |
f7d2b0ed RH |
7905 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
7906 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
a3f97cbb JW |
7907 | break; |
7908 | ||
d8041cc8 RH |
7909 | case LABEL_REF: |
7910 | /* Some ports can transform a symbol ref into a label ref, because | |
368f4cd6 NC |
7911 | the symbol ref is too far away and has to be dumped into a constant |
7912 | pool. */ | |
a3f97cbb JW |
7913 | case CONST: |
7914 | case SYMBOL_REF: | |
7915 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
7916 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
1865dbb5 | 7917 | mem_loc_result->dw_loc_oprnd1.v.val_addr = save_rtx (rtl); |
a3f97cbb JW |
7918 | break; |
7919 | ||
e2134eea JH |
7920 | case PRE_MODIFY: |
7921 | /* Extract the PLUS expression nested inside and fall into | |
7922 | PLUS code bellow. */ | |
7923 | rtl = XEXP (rtl, 1); | |
7924 | goto plus; | |
7925 | ||
e60d4d7b JL |
7926 | case PRE_INC: |
7927 | case PRE_DEC: | |
7928 | /* Turn these into a PLUS expression and fall into the PLUS code | |
7929 | below. */ | |
7930 | rtl = gen_rtx_PLUS (word_mode, XEXP (rtl, 0), | |
7931 | GEN_INT (GET_CODE (rtl) == PRE_INC | |
556273e0 KH |
7932 | ? GET_MODE_UNIT_SIZE (mode) |
7933 | : -GET_MODE_UNIT_SIZE (mode))); | |
7934 | ||
7935 | /* Fall through. */ | |
e60d4d7b | 7936 | |
a3f97cbb | 7937 | case PLUS: |
e2134eea | 7938 | plus: |
a3f97cbb | 7939 | if (is_based_loc (rtl)) |
71dfc51f RK |
7940 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
7941 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
7942 | else |
7943 | { | |
d8041cc8 RH |
7944 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode); |
7945 | ||
7946 | if (GET_CODE (XEXP (rtl, 1)) == CONST_INT | |
7947 | && INTVAL (XEXP (rtl, 1)) >= 0) | |
7948 | { | |
7949 | add_loc_descr (&mem_loc_result, | |
7950 | new_loc_descr (DW_OP_plus_uconst, | |
7951 | INTVAL (XEXP (rtl, 1)), 0)); | |
7952 | } | |
7953 | else | |
7954 | { | |
7955 | add_loc_descr (&mem_loc_result, | |
7956 | mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
7957 | add_loc_descr (&mem_loc_result, | |
7958 | new_loc_descr (DW_OP_plus, 0, 0)); | |
7959 | } | |
a3f97cbb JW |
7960 | } |
7961 | break; | |
7962 | ||
dd2478ae JW |
7963 | case MULT: |
7964 | /* If a pseudo-reg is optimized away, it is possible for it to | |
7965 | be replaced with a MEM containing a multiply. */ | |
d8041cc8 RH |
7966 | add_loc_descr (&mem_loc_result, |
7967 | mem_loc_descriptor (XEXP (rtl, 0), mode)); | |
7968 | add_loc_descr (&mem_loc_result, | |
7969 | mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
dd2478ae JW |
7970 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); |
7971 | break; | |
7972 | ||
a3f97cbb | 7973 | case CONST_INT: |
d8041cc8 | 7974 | mem_loc_result = int_loc_descriptor (INTVAL (rtl)); |
a3f97cbb JW |
7975 | break; |
7976 | ||
7977 | default: | |
7978 | abort (); | |
7979 | } | |
71dfc51f | 7980 | |
a3f97cbb JW |
7981 | return mem_loc_result; |
7982 | } | |
7983 | ||
956d6950 | 7984 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
7985 | This is typically a complex variable. */ |
7986 | ||
7987 | static dw_loc_descr_ref | |
7988 | concat_loc_descriptor (x0, x1) | |
7989 | register rtx x0, x1; | |
7990 | { | |
7991 | dw_loc_descr_ref cc_loc_result = NULL; | |
7992 | ||
7993 | if (!is_pseudo_reg (x0) | |
7994 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
7995 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
7996 | add_loc_descr (&cc_loc_result, | |
7997 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
7998 | ||
7999 | if (!is_pseudo_reg (x1) | |
8000 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
8001 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
8002 | add_loc_descr (&cc_loc_result, | |
8003 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
8004 | ||
8005 | return cc_loc_result; | |
8006 | } | |
8007 | ||
a3f97cbb JW |
8008 | /* Output a proper Dwarf location descriptor for a variable or parameter |
8009 | which is either allocated in a register or in a memory location. For a | |
8010 | register, we just generate an OP_REG and the register number. For a | |
8011 | memory location we provide a Dwarf postfix expression describing how to | |
8012 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 8013 | |
a3f97cbb JW |
8014 | static dw_loc_descr_ref |
8015 | loc_descriptor (rtl) | |
8016 | register rtx rtl; | |
8017 | { | |
8018 | dw_loc_descr_ref loc_result = NULL; | |
8019 | switch (GET_CODE (rtl)) | |
8020 | { | |
8021 | case SUBREG: | |
a3f97cbb JW |
8022 | /* The case of a subreg may arise when we have a local (register) |
8023 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 8024 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
8025 | legitimate to make the Dwarf info refer to the whole register which |
8026 | contains the given subreg. */ | |
a3f97cbb | 8027 | rtl = XEXP (rtl, 0); |
71dfc51f | 8028 | |
556273e0 | 8029 | /* Fall through. */ |
a3f97cbb JW |
8030 | |
8031 | case REG: | |
5c90448c | 8032 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
8033 | break; |
8034 | ||
8035 | case MEM: | |
e60d4d7b | 8036 | loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
a3f97cbb JW |
8037 | break; |
8038 | ||
4401bf24 JL |
8039 | case CONCAT: |
8040 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
8041 | break; | |
8042 | ||
a3f97cbb | 8043 | default: |
71dfc51f | 8044 | abort (); |
a3f97cbb | 8045 | } |
71dfc51f | 8046 | |
a3f97cbb JW |
8047 | return loc_result; |
8048 | } | |
8049 | ||
d8041cc8 RH |
8050 | /* Similar, but generate the descriptor from trees instead of rtl. |
8051 | This comes up particularly with variable length arrays. */ | |
8052 | ||
8053 | static dw_loc_descr_ref | |
8054 | loc_descriptor_from_tree (loc, addressp) | |
8055 | tree loc; | |
8056 | int addressp; | |
8057 | { | |
8058 | dw_loc_descr_ref ret = NULL; | |
8059 | int indirect_size = 0; | |
8060 | int unsignedp = TREE_UNSIGNED (TREE_TYPE (loc)); | |
8061 | enum dwarf_location_atom op; | |
8062 | ||
8063 | /* ??? Most of the time we do not take proper care for sign/zero | |
8064 | extending the values properly. Hopefully this won't be a real | |
8065 | problem... */ | |
8066 | ||
8067 | switch (TREE_CODE (loc)) | |
8068 | { | |
8069 | case ERROR_MARK: | |
8070 | break; | |
8071 | ||
b4ae5201 RK |
8072 | case WITH_RECORD_EXPR: |
8073 | /* This case involves extracting fields from an object to determine the | |
8074 | position of other fields. We don't try to encode this here. The | |
8075 | only user of this is Ada, which encodes the needed information using | |
8076 | the names of types. */ | |
8077 | return ret; | |
8078 | ||
d8041cc8 RH |
8079 | case VAR_DECL: |
8080 | case PARM_DECL: | |
8081 | { | |
8082 | rtx rtl = rtl_for_decl_location (loc); | |
8083 | enum machine_mode mode = DECL_MODE (loc); | |
8084 | ||
a97c9600 RH |
8085 | if (rtl == NULL_RTX) |
8086 | break; | |
8087 | else if (CONSTANT_P (rtl)) | |
d8041cc8 RH |
8088 | { |
8089 | ret = new_loc_descr (DW_OP_addr, 0, 0); | |
8090 | ret->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
8091 | ret->dw_loc_oprnd1.v.val_addr = rtl; | |
8092 | indirect_size = GET_MODE_SIZE (mode); | |
8093 | } | |
8094 | else | |
8095 | { | |
8096 | if (GET_CODE (rtl) == MEM) | |
8097 | { | |
8098 | indirect_size = GET_MODE_SIZE (mode); | |
8099 | rtl = XEXP (rtl, 0); | |
8100 | } | |
8101 | ret = mem_loc_descriptor (rtl, mode); | |
8102 | } | |
8103 | } | |
8104 | break; | |
8105 | ||
8106 | case INDIRECT_REF: | |
8107 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
8108 | indirect_size = GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (loc))); | |
8109 | break; | |
8110 | ||
ed972b14 RK |
8111 | case NOP_EXPR: |
8112 | case CONVERT_EXPR: | |
8113 | case NON_LVALUE_EXPR: | |
b4ae5201 | 8114 | case SAVE_EXPR: |
ed972b14 | 8115 | return loc_descriptor_from_tree (TREE_OPERAND (loc, 0), addressp); |
e57cabac | 8116 | |
d8041cc8 RH |
8117 | case COMPONENT_REF: |
8118 | case BIT_FIELD_REF: | |
8119 | case ARRAY_REF: | |
8120 | { | |
8121 | tree obj, offset; | |
8122 | HOST_WIDE_INT bitsize, bitpos, bytepos; | |
8123 | enum machine_mode mode; | |
8124 | int volatilep; | |
8125 | unsigned int alignment; | |
8126 | ||
8127 | obj = get_inner_reference (loc, &bitsize, &bitpos, &offset, &mode, | |
8128 | &unsignedp, &volatilep, &alignment); | |
8129 | ret = loc_descriptor_from_tree (obj, 1); | |
8130 | ||
8131 | if (offset != NULL_TREE) | |
8132 | { | |
8133 | /* Variable offset. */ | |
8134 | add_loc_descr (&ret, loc_descriptor_from_tree (offset, 0)); | |
8135 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
8136 | } | |
8137 | ||
8138 | if (addressp) | |
8139 | { | |
8140 | /* We cannot address anything not on a unit boundary. */ | |
8141 | if (bitpos % BITS_PER_UNIT != 0) | |
8142 | abort (); | |
8143 | } | |
8144 | else | |
8145 | { | |
8146 | if (bitpos % BITS_PER_UNIT != 0 | |
8147 | || bitsize % BITS_PER_UNIT != 0) | |
8148 | { | |
8149 | /* ??? We could handle this by loading and shifting etc. | |
8150 | Wait until someone needs it before expending the effort. */ | |
8151 | abort (); | |
8152 | } | |
8153 | ||
8154 | indirect_size = bitsize / BITS_PER_UNIT; | |
8155 | } | |
8156 | ||
8157 | bytepos = bitpos / BITS_PER_UNIT; | |
8158 | if (bytepos > 0) | |
8159 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus_uconst, bytepos, 0)); | |
8160 | else if (bytepos < 0) | |
8161 | { | |
8162 | add_loc_descr (&ret, int_loc_descriptor (bytepos)); | |
8163 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
8164 | } | |
8165 | break; | |
8166 | } | |
8167 | ||
8168 | case INTEGER_CST: | |
8169 | if (host_integerp (loc, 0)) | |
8170 | ret = int_loc_descriptor (tree_low_cst (loc, 0)); | |
8171 | break; | |
d8041cc8 RH |
8172 | |
8173 | case BIT_AND_EXPR: | |
8174 | op = DW_OP_and; | |
8175 | goto do_binop; | |
8176 | case BIT_XOR_EXPR: | |
8177 | op = DW_OP_xor; | |
8178 | goto do_binop; | |
8179 | case BIT_IOR_EXPR: | |
8180 | op = DW_OP_or; | |
8181 | goto do_binop; | |
8182 | case TRUNC_DIV_EXPR: | |
8183 | op = DW_OP_div; | |
8184 | goto do_binop; | |
8185 | case MINUS_EXPR: | |
8186 | op = DW_OP_minus; | |
8187 | goto do_binop; | |
8188 | case TRUNC_MOD_EXPR: | |
8189 | op = DW_OP_mod; | |
8190 | goto do_binop; | |
8191 | case MULT_EXPR: | |
8192 | op = DW_OP_mul; | |
8193 | goto do_binop; | |
8194 | case LSHIFT_EXPR: | |
8195 | op = DW_OP_shl; | |
8196 | goto do_binop; | |
8197 | case RSHIFT_EXPR: | |
8198 | op = (unsignedp ? DW_OP_shr : DW_OP_shra); | |
8199 | goto do_binop; | |
8200 | case PLUS_EXPR: | |
8201 | if (TREE_CODE (TREE_OPERAND (loc, 1)) == INTEGER_CST | |
8202 | && host_integerp (TREE_OPERAND (loc, 1), 0)) | |
8203 | { | |
8204 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
8205 | add_loc_descr (&ret, | |
8206 | new_loc_descr (DW_OP_plus_uconst, | |
8207 | tree_low_cst (TREE_OPERAND (loc, 1), | |
8208 | 0), | |
8209 | 0)); | |
8210 | break; | |
8211 | } | |
8212 | op = DW_OP_plus; | |
8213 | goto do_binop; | |
8214 | case LE_EXPR: | |
8215 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
8216 | break; | |
8217 | op = DW_OP_le; | |
8218 | goto do_binop; | |
8219 | case GE_EXPR: | |
8220 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
8221 | break; | |
8222 | op = DW_OP_ge; | |
8223 | goto do_binop; | |
8224 | case LT_EXPR: | |
8225 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
8226 | break; | |
8227 | op = DW_OP_lt; | |
8228 | goto do_binop; | |
8229 | case GT_EXPR: | |
8230 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
8231 | break; | |
8232 | op = DW_OP_gt; | |
8233 | goto do_binop; | |
8234 | case EQ_EXPR: | |
8235 | op = DW_OP_eq; | |
8236 | goto do_binop; | |
8237 | case NE_EXPR: | |
8238 | op = DW_OP_ne; | |
8239 | goto do_binop; | |
8240 | ||
8241 | do_binop: | |
8242 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
8243 | add_loc_descr (&ret, loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0)); | |
8244 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); | |
8245 | break; | |
8246 | ||
8247 | case BIT_NOT_EXPR: | |
8248 | op = DW_OP_not; | |
8249 | goto do_unop; | |
8250 | case ABS_EXPR: | |
8251 | op = DW_OP_abs; | |
8252 | goto do_unop; | |
8253 | case NEGATE_EXPR: | |
8254 | op = DW_OP_neg; | |
8255 | goto do_unop; | |
8256 | ||
8257 | do_unop: | |
8258 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
8259 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); | |
8260 | break; | |
8261 | ||
8262 | case MAX_EXPR: | |
8263 | loc = build (COND_EXPR, TREE_TYPE (loc), | |
8264 | build (LT_EXPR, integer_type_node, | |
8265 | TREE_OPERAND (loc, 0), TREE_OPERAND (loc, 1)), | |
8266 | TREE_OPERAND (loc, 1), TREE_OPERAND (loc, 0)); | |
8267 | /* FALLTHRU */ | |
8268 | ||
8269 | case COND_EXPR: | |
8270 | { | |
8271 | dw_loc_descr_ref bra_node, jump_node, tmp; | |
8272 | ||
8273 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
8274 | bra_node = new_loc_descr (DW_OP_bra, 0, 0); | |
8275 | add_loc_descr (&ret, bra_node); | |
8276 | ||
8277 | tmp = loc_descriptor_from_tree (TREE_OPERAND (loc, 2), 0); | |
8278 | add_loc_descr (&ret, tmp); | |
8279 | jump_node = new_loc_descr (DW_OP_skip, 0, 0); | |
8280 | add_loc_descr (&ret, jump_node); | |
8281 | ||
8282 | tmp = loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0); | |
8283 | add_loc_descr (&ret, tmp); | |
8284 | bra_node->dw_loc_oprnd1.val_class = dw_val_class_loc; | |
8285 | bra_node->dw_loc_oprnd1.v.val_loc = tmp; | |
8286 | ||
8287 | /* ??? Need a node to point the skip at. Use a nop. */ | |
8288 | tmp = new_loc_descr (DW_OP_nop, 0, 0); | |
8289 | add_loc_descr (&ret, tmp); | |
8290 | jump_node->dw_loc_oprnd1.val_class = dw_val_class_loc; | |
8291 | jump_node->dw_loc_oprnd1.v.val_loc = tmp; | |
8292 | } | |
8293 | break; | |
8294 | ||
8295 | default: | |
8296 | abort (); | |
8297 | } | |
8298 | ||
8299 | /* If we can't fill the request for an address, die. */ | |
8300 | if (addressp && indirect_size == 0) | |
8301 | abort (); | |
8302 | ||
8303 | /* If we've got an address and don't want one, dereference. */ | |
8304 | if (!addressp && indirect_size > 0) | |
8305 | { | |
8306 | if (indirect_size > DWARF2_ADDR_SIZE) | |
8307 | abort (); | |
8308 | if (indirect_size == DWARF2_ADDR_SIZE) | |
8309 | op = DW_OP_deref; | |
8310 | else | |
8311 | op = DW_OP_deref_size; | |
8312 | add_loc_descr (&ret, new_loc_descr (op, indirect_size, 0)); | |
8313 | } | |
8314 | ||
8315 | return ret; | |
8316 | } | |
8317 | ||
665f2503 | 8318 | /* Given a value, round it up to the lowest multiple of `boundary' |
a3f97cbb | 8319 | which is not less than the value itself. */ |
71dfc51f | 8320 | |
665f2503 | 8321 | static inline HOST_WIDE_INT |
a3f97cbb | 8322 | ceiling (value, boundary) |
665f2503 RK |
8323 | HOST_WIDE_INT value; |
8324 | unsigned int boundary; | |
a3f97cbb JW |
8325 | { |
8326 | return (((value + boundary - 1) / boundary) * boundary); | |
8327 | } | |
8328 | ||
8329 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
8330 | pointer to the declared type for the relevant field variable, or return | |
8331 | `integer_type_node' if the given node turns out to be an | |
8332 | ERROR_MARK node. */ | |
71dfc51f RK |
8333 | |
8334 | static inline tree | |
a3f97cbb JW |
8335 | field_type (decl) |
8336 | register tree decl; | |
8337 | { | |
8338 | register tree type; | |
8339 | ||
8340 | if (TREE_CODE (decl) == ERROR_MARK) | |
8341 | return integer_type_node; | |
8342 | ||
8343 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 8344 | if (type == NULL_TREE) |
a3f97cbb JW |
8345 | type = TREE_TYPE (decl); |
8346 | ||
8347 | return type; | |
8348 | } | |
8349 | ||
5f446d21 DD |
8350 | /* Given a pointer to a tree node, return the alignment in bits for |
8351 | it, or else return BITS_PER_WORD if the node actually turns out to | |
8352 | be an ERROR_MARK node. */ | |
71dfc51f RK |
8353 | |
8354 | static inline unsigned | |
a3f97cbb JW |
8355 | simple_type_align_in_bits (type) |
8356 | register tree type; | |
8357 | { | |
8358 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
8359 | } | |
8360 | ||
5f446d21 DD |
8361 | static inline unsigned |
8362 | simple_decl_align_in_bits (decl) | |
8363 | register tree decl; | |
8364 | { | |
8365 | return (TREE_CODE (decl) != ERROR_MARK) ? DECL_ALIGN (decl) : BITS_PER_WORD; | |
8366 | } | |
8367 | ||
a3f97cbb JW |
8368 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE |
8369 | node, return the size in bits for the type if it is a constant, or else | |
8370 | return the alignment for the type if the type's size is not constant, or | |
8371 | else return BITS_PER_WORD if the type actually turns out to be an | |
8372 | ERROR_MARK node. */ | |
71dfc51f | 8373 | |
665f2503 | 8374 | static inline unsigned HOST_WIDE_INT |
a3f97cbb JW |
8375 | simple_type_size_in_bits (type) |
8376 | register tree type; | |
8377 | { | |
3df18884 RH |
8378 | tree type_size_tree; |
8379 | ||
a3f97cbb JW |
8380 | if (TREE_CODE (type) == ERROR_MARK) |
8381 | return BITS_PER_WORD; | |
3df18884 | 8382 | type_size_tree = TYPE_SIZE (type); |
a3f97cbb | 8383 | |
3df18884 RH |
8384 | if (type_size_tree == NULL_TREE) |
8385 | return 0; | |
8386 | if (! host_integerp (type_size_tree, 1)) | |
8387 | return TYPE_ALIGN (type); | |
8388 | return tree_low_cst (type_size_tree, 1); | |
a3f97cbb JW |
8389 | } |
8390 | ||
8391 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
8392 | return the byte offset of the lowest addressed byte of the "containing | |
8393 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
8394 | determine what that offset is, either because the argument turns out to | |
8395 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
8396 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 8397 | |
665f2503 | 8398 | static HOST_WIDE_INT |
a3f97cbb JW |
8399 | field_byte_offset (decl) |
8400 | register tree decl; | |
8401 | { | |
665f2503 | 8402 | unsigned int type_align_in_bits; |
5f446d21 | 8403 | unsigned int decl_align_in_bits; |
665f2503 | 8404 | unsigned HOST_WIDE_INT type_size_in_bits; |
665f2503 RK |
8405 | HOST_WIDE_INT object_offset_in_bits; |
8406 | HOST_WIDE_INT object_offset_in_bytes; | |
8407 | tree type; | |
8408 | tree field_size_tree; | |
8409 | HOST_WIDE_INT bitpos_int; | |
8410 | HOST_WIDE_INT deepest_bitpos; | |
8411 | unsigned HOST_WIDE_INT field_size_in_bits; | |
a3f97cbb JW |
8412 | |
8413 | if (TREE_CODE (decl) == ERROR_MARK) | |
8414 | return 0; | |
8415 | ||
8416 | if (TREE_CODE (decl) != FIELD_DECL) | |
8417 | abort (); | |
8418 | ||
8419 | type = field_type (decl); | |
a3f97cbb JW |
8420 | field_size_tree = DECL_SIZE (decl); |
8421 | ||
3df18884 RH |
8422 | /* The size could be unspecified if there was an error, or for |
8423 | a flexible array member. */ | |
50352c9c | 8424 | if (! field_size_tree) |
3df18884 | 8425 | field_size_tree = bitsize_zero_node; |
50352c9c | 8426 | |
556273e0 | 8427 | /* We cannot yet cope with fields whose positions are variable, so |
a3f97cbb JW |
8428 | for now, when we see such things, we simply return 0. Someday, we may |
8429 | be able to handle such cases, but it will be damn difficult. */ | |
665f2503 | 8430 | if (! host_integerp (bit_position (decl), 0)) |
a3f97cbb | 8431 | return 0; |
14a774a9 | 8432 | |
665f2503 | 8433 | bitpos_int = int_bit_position (decl); |
a3f97cbb | 8434 | |
3df18884 | 8435 | /* If we don't know the size of the field, pretend it's a full word. */ |
665f2503 RK |
8436 | if (host_integerp (field_size_tree, 1)) |
8437 | field_size_in_bits = tree_low_cst (field_size_tree, 1); | |
14a774a9 RK |
8438 | else |
8439 | field_size_in_bits = BITS_PER_WORD; | |
a3f97cbb JW |
8440 | |
8441 | type_size_in_bits = simple_type_size_in_bits (type); | |
a3f97cbb | 8442 | type_align_in_bits = simple_type_align_in_bits (type); |
5f446d21 | 8443 | decl_align_in_bits = simple_decl_align_in_bits (decl); |
a3f97cbb JW |
8444 | |
8445 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
8446 | the starting bit offset (relative to the start of the containing | |
8447 | structure type) of the hypothetical "containing object" for a bit- | |
8448 | field. Thus, when computing the byte offset value for the start of the | |
556273e0 | 8449 | "containing object" of a bit-field, we must deduce this information on |
a3f97cbb JW |
8450 | our own. This can be rather tricky to do in some cases. For example, |
8451 | handling the following structure type definition when compiling for an | |
8452 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
8453 | can be very tricky: | |
8454 | ||
8455 | struct S { int field1; long long field2:31; }; | |
8456 | ||
8457 | Fortunately, there is a simple rule-of-thumb which can be | |
8458 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
556273e0 | 8459 | 8 bytes for the structure shown above. It decides to do this based upon |
a3f97cbb JW |
8460 | one simple rule for bit-field allocation. Quite simply, GCC allocates |
8461 | each "containing object" for each bit-field at the first (i.e. lowest | |
8462 | addressed) legitimate alignment boundary (based upon the required | |
8463 | minimum alignment for the declared type of the field) which it can | |
8464 | possibly use, subject to the condition that there is still enough | |
8465 | available space remaining in the containing object (when allocated at | |
8466 | the selected point) to fully accommodate all of the bits of the | |
8467 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
8468 | 8 bytes for each object of the structure type shown above. When looking | |
8469 | for a place to allocate the "containing object" for `field2', the | |
8470 | compiler simply tries to allocate a 64-bit "containing object" at each | |
8471 | successive 32-bit boundary (starting at zero) until it finds a place to | |
8472 | allocate that 64- bit field such that at least 31 contiguous (and | |
8473 | previously unallocated) bits remain within that selected 64 bit field. | |
8474 | (As it turns out, for the example above, the compiler finds that it is | |
8475 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
8476 | within the structure type.) Here we attempt to work backwards from the | |
556273e0 | 8477 | limited set of facts we're given, and we try to deduce from those facts, |
a3f97cbb | 8478 | where GCC must have believed that the containing object started (within |
556273e0 KH |
8479 | the structure type). The value we deduce is then used (by the callers of |
8480 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
a3f97cbb JW |
8481 | for fields (both bit-fields and, in the case of DW_AT_location, regular |
8482 | fields as well). */ | |
8483 | ||
8484 | /* Figure out the bit-distance from the start of the structure to the | |
8485 | "deepest" bit of the bit-field. */ | |
8486 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
8487 | ||
8488 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
8489 | lowest addressed bit of the containing object must be. */ | |
5f446d21 DD |
8490 | object_offset_in_bits = deepest_bitpos - type_size_in_bits; |
8491 | ||
8492 | /* Round up to type_align by default. This works best for bitfields. */ | |
8493 | object_offset_in_bits += type_align_in_bits - 1; | |
8494 | object_offset_in_bits /= type_align_in_bits; | |
8495 | object_offset_in_bits *= type_align_in_bits; | |
a3f97cbb | 8496 | |
5f446d21 DD |
8497 | if (object_offset_in_bits > bitpos_int) |
8498 | { | |
8499 | /* Sigh, the decl must be packed. */ | |
8500 | object_offset_in_bits = deepest_bitpos - type_size_in_bits; | |
8501 | ||
8502 | /* Round up to decl_align instead. */ | |
8503 | object_offset_in_bits += decl_align_in_bits - 1; | |
8504 | object_offset_in_bits /= decl_align_in_bits; | |
8505 | object_offset_in_bits *= decl_align_in_bits; | |
8506 | } | |
a3f97cbb | 8507 | |
5f446d21 | 8508 | object_offset_in_bytes = object_offset_in_bits / BITS_PER_UNIT; |
a3f97cbb JW |
8509 | |
8510 | return object_offset_in_bytes; | |
8511 | } | |
a3f97cbb | 8512 | \f |
71dfc51f RK |
8513 | /* The following routines define various Dwarf attributes and any data |
8514 | associated with them. */ | |
a3f97cbb | 8515 | |
ef76d03b | 8516 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 8517 | |
ef76d03b | 8518 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
8519 | whole parameters. Note that the location attributes for struct fields are |
8520 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 8521 | |
a3f97cbb | 8522 | static void |
ef76d03b | 8523 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 8524 | dw_die_ref die; |
ef76d03b | 8525 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
8526 | register rtx rtl; |
8527 | { | |
a3f97cbb JW |
8528 | /* Handle a special case. If we are about to output a location descriptor |
8529 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 8530 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
8531 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
8532 | Currently, in some rare cases, variables can have DECL_RTL values which | |
8533 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
556273e0 | 8534 | elsewhere in the compiler. We treat such cases as if the variable(s) in |
6a7a9f01 | 8535 | question had been optimized out of existence. */ |
a3f97cbb | 8536 | |
6a7a9f01 JM |
8537 | if (is_pseudo_reg (rtl) |
8538 | || (GET_CODE (rtl) == MEM | |
4401bf24 | 8539 | && is_pseudo_reg (XEXP (rtl, 0))) |
556273e0 | 8540 | /* This can happen for a PARM_DECL with a DECL_INCOMING_RTL which |
bce8fed7 JL |
8541 | references the internal argument pointer (a pseudo) in a function |
8542 | where all references to the internal argument pointer were | |
8543 | eliminated via the optimizers. */ | |
8544 | || (GET_CODE (rtl) == MEM | |
8545 | && GET_CODE (XEXP (rtl, 0)) == PLUS | |
8546 | && is_pseudo_reg (XEXP (XEXP (rtl, 0), 0))) | |
4401bf24 JL |
8547 | || (GET_CODE (rtl) == CONCAT |
8548 | && is_pseudo_reg (XEXP (rtl, 0)) | |
8549 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 8550 | return; |
a3f97cbb | 8551 | |
6a7a9f01 | 8552 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
8553 | } |
8554 | ||
8555 | /* Attach the specialized form of location attribute used for data | |
8556 | members of struct and union types. In the special case of a | |
8557 | FIELD_DECL node which represents a bit-field, the "offset" part | |
8558 | of this special location descriptor must indicate the distance | |
8559 | in bytes from the lowest-addressed byte of the containing struct | |
8560 | or union type to the lowest-addressed byte of the "containing | |
8561 | object" for the bit-field. (See the `field_byte_offset' function | |
8562 | above).. For any given bit-field, the "containing object" is a | |
8563 | hypothetical object (of some integral or enum type) within which | |
8564 | the given bit-field lives. The type of this hypothetical | |
8565 | "containing object" is always the same as the declared type of | |
8566 | the individual bit-field itself (for GCC anyway... the DWARF | |
8567 | spec doesn't actually mandate this). Note that it is the size | |
8568 | (in bytes) of the hypothetical "containing object" which will | |
8569 | be given in the DW_AT_byte_size attribute for this bit-field. | |
8570 | (See the `byte_size_attribute' function below.) It is also used | |
8571 | when calculating the value of the DW_AT_bit_offset attribute. | |
8572 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 8573 | |
a3f97cbb JW |
8574 | static void |
8575 | add_data_member_location_attribute (die, decl) | |
8576 | register dw_die_ref die; | |
8577 | register tree decl; | |
8578 | { | |
61b32c02 | 8579 | register unsigned long offset; |
a3f97cbb JW |
8580 | register dw_loc_descr_ref loc_descr; |
8581 | register enum dwarf_location_atom op; | |
8582 | ||
61b32c02 | 8583 | if (TREE_CODE (decl) == TREE_VEC) |
665f2503 | 8584 | offset = tree_low_cst (BINFO_OFFSET (decl), 0); |
61b32c02 JM |
8585 | else |
8586 | offset = field_byte_offset (decl); | |
8587 | ||
a3f97cbb JW |
8588 | /* The DWARF2 standard says that we should assume that the structure address |
8589 | is already on the stack, so we can specify a structure field address | |
8590 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 8591 | |
a3f97cbb JW |
8592 | #ifdef MIPS_DEBUGGING_INFO |
8593 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
8594 | correctly. It works only if we leave the offset on the stack. */ | |
8595 | op = DW_OP_constu; | |
8596 | #else | |
8597 | op = DW_OP_plus_uconst; | |
8598 | #endif | |
71dfc51f | 8599 | |
a3f97cbb JW |
8600 | loc_descr = new_loc_descr (op, offset, 0); |
8601 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
8602 | } | |
8603 | ||
8604 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
8605 | does not have a "location" either in memory or in a register. These | |
8606 | things can arise in GNU C when a constant is passed as an actual parameter | |
8607 | to an inlined function. They can also arise in C++ where declared | |
8608 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 8609 | |
a3f97cbb JW |
8610 | static void |
8611 | add_const_value_attribute (die, rtl) | |
8612 | register dw_die_ref die; | |
8613 | register rtx rtl; | |
8614 | { | |
8615 | switch (GET_CODE (rtl)) | |
8616 | { | |
8617 | case CONST_INT: | |
8618 | /* Note that a CONST_INT rtx could represent either an integer or a | |
8619 | floating-point constant. A CONST_INT is used whenever the constant | |
8620 | will fit into a single word. In all such cases, the original mode | |
8621 | of the constant value is wiped out, and the CONST_INT rtx is | |
8622 | assigned VOIDmode. */ | |
8623 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
8624 | break; | |
8625 | ||
8626 | case CONST_DOUBLE: | |
8627 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
8628 | floating-point constant. A CONST_DOUBLE is used whenever the | |
8629 | constant requires more than one word in order to be adequately | |
469ac993 JM |
8630 | represented. We output CONST_DOUBLEs as blocks. */ |
8631 | { | |
8632 | register enum machine_mode mode = GET_MODE (rtl); | |
8633 | ||
8634 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
8635 | { | |
e389897b | 8636 | register unsigned length = GET_MODE_SIZE (mode) / 4; |
1bfb5f8f | 8637 | long *array = (long *) xmalloc (sizeof (long) * length); |
71dfc51f | 8638 | REAL_VALUE_TYPE rv; |
469ac993 | 8639 | |
71dfc51f | 8640 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
8641 | switch (mode) |
8642 | { | |
8643 | case SFmode: | |
71dfc51f | 8644 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
8645 | break; |
8646 | ||
8647 | case DFmode: | |
71dfc51f | 8648 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
8649 | break; |
8650 | ||
8651 | case XFmode: | |
8652 | case TFmode: | |
71dfc51f | 8653 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
8654 | break; |
8655 | ||
8656 | default: | |
8657 | abort (); | |
8658 | } | |
8659 | ||
469ac993 JM |
8660 | add_AT_float (die, DW_AT_const_value, length, array); |
8661 | } | |
8662 | else | |
8663 | add_AT_long_long (die, DW_AT_const_value, | |
8664 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
8665 | } | |
a3f97cbb JW |
8666 | break; |
8667 | ||
8668 | case CONST_STRING: | |
8669 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
8670 | break; | |
8671 | ||
8672 | case SYMBOL_REF: | |
8673 | case LABEL_REF: | |
8674 | case CONST: | |
1865dbb5 | 8675 | add_AT_addr (die, DW_AT_const_value, save_rtx (rtl)); |
a3f97cbb JW |
8676 | break; |
8677 | ||
8678 | case PLUS: | |
8679 | /* In cases where an inlined instance of an inline function is passed | |
8680 | the address of an `auto' variable (which is local to the caller) we | |
8681 | can get a situation where the DECL_RTL of the artificial local | |
8682 | variable (for the inlining) which acts as a stand-in for the | |
8683 | corresponding formal parameter (of the inline function) will look | |
8684 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
556273e0 KH |
8685 | exactly a compile-time constant expression, but it isn't the address |
8686 | of the (artificial) local variable either. Rather, it represents the | |
a3f97cbb | 8687 | *value* which the artificial local variable always has during its |
556273e0 | 8688 | lifetime. We currently have no way to represent such quasi-constant |
6a7a9f01 | 8689 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
8690 | break; |
8691 | ||
8692 | default: | |
8693 | /* No other kinds of rtx should be possible here. */ | |
8694 | abort (); | |
8695 | } | |
8696 | ||
8697 | } | |
8698 | ||
d8041cc8 RH |
8699 | static rtx |
8700 | rtl_for_decl_location (decl) | |
8701 | tree decl; | |
a3f97cbb JW |
8702 | { |
8703 | register rtx rtl; | |
71dfc51f | 8704 | |
a3f97cbb JW |
8705 | /* Here we have to decide where we are going to say the parameter "lives" |
8706 | (as far as the debugger is concerned). We only have a couple of | |
8707 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 8708 | |
556273e0 | 8709 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 8710 | activation of the function. If optimization is enabled however, this |
556273e0 | 8711 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
a3f97cbb JW |
8712 | that the parameter doesn't really live anywhere (as far as the code |
8713 | generation parts of GCC are concerned) during most of the function's | |
8714 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
8715 | referenced within the function. |
8716 | ||
8717 | We could just generate a location descriptor here for all non-NULL | |
8718 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
8719 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
8720 | where DECL_RTL is NULL or is a pseudo-reg. | |
8721 | ||
8722 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
8723 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
8724 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
8725 | we can be sure that the parameter was passed using the same type as it is | |
8726 | declared to have within the function, and that its DECL_INCOMING_RTL | |
8727 | points us to a place where a value of that type is passed. | |
8728 | ||
8729 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
8730 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
8731 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
8732 | type which is *different* from the type of the parameter itself. Thus, | |
8733 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
8734 | such cases, the debugger would end up (for example) trying to fetch a | |
8735 | `float' from a place which actually contains the first part of a | |
8736 | `double'. That would lead to really incorrect and confusing | |
8737 | output at debug-time. | |
8738 | ||
8739 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
8740 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
8741 | are a couple of exceptions however. On little-endian machines we can | |
8742 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
8743 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
8744 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
8745 | when (on a little-endian machine) a non-prototyped function has a | |
8746 | parameter declared to be of type `short' or `char'. In such cases, | |
8747 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
8748 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
8749 | passed `int' value. If the debugger then uses that address to fetch | |
8750 | a `short' or a `char' (on a little-endian machine) the result will be | |
8751 | the correct data, so we allow for such exceptional cases below. | |
8752 | ||
8753 | Note that our goal here is to describe the place where the given formal | |
8754 | parameter lives during most of the function's activation (i.e. between | |
8755 | the end of the prologue and the start of the epilogue). We'll do that | |
8756 | as best as we can. Note however that if the given formal parameter is | |
8757 | modified sometime during the execution of the function, then a stack | |
8758 | backtrace (at debug-time) will show the function as having been | |
8759 | called with the *new* value rather than the value which was | |
8760 | originally passed in. This happens rarely enough that it is not | |
8761 | a major problem, but it *is* a problem, and I'd like to fix it. | |
8762 | ||
8763 | A future version of dwarf2out.c may generate two additional | |
8764 | attributes for any given DW_TAG_formal_parameter DIE which will | |
8765 | describe the "passed type" and the "passed location" for the | |
8766 | given formal parameter in addition to the attributes we now | |
8767 | generate to indicate the "declared type" and the "active | |
8768 | location" for each parameter. This additional set of attributes | |
8769 | could be used by debuggers for stack backtraces. Separately, note | |
8770 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
8771 | NULL also. This happens (for example) for inlined-instances of | |
8772 | inline function formal parameters which are never referenced. | |
8773 | This really shouldn't be happening. All PARM_DECL nodes should | |
8774 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
8775 | doesn't currently generate these values for inlined instances of | |
8776 | inline function parameters, so when we see such cases, we are | |
956d6950 | 8777 | just out-of-luck for the time being (until integrate.c |
a3f97cbb JW |
8778 | gets fixed). */ |
8779 | ||
8780 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
8781 | rtl = DECL_RTL (decl); | |
8782 | ||
8783 | if (TREE_CODE (decl) == PARM_DECL) | |
8784 | { | |
8785 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
8786 | { | |
d8041cc8 RH |
8787 | tree declared_type = type_main_variant (TREE_TYPE (decl)); |
8788 | tree passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 8789 | |
71dfc51f | 8790 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
8791 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
8792 | all* cases where (rtl == NULL_RTX) just below. */ | |
8793 | if (declared_type == passed_type) | |
71dfc51f RK |
8794 | rtl = DECL_INCOMING_RTL (decl); |
8795 | else if (! BYTES_BIG_ENDIAN | |
8796 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
555b6442 HPN |
8797 | && (GET_MODE_SIZE (TYPE_MODE (declared_type)) |
8798 | <= GET_MODE_SIZE (TYPE_MODE (passed_type)))) | |
556273e0 | 8799 | rtl = DECL_INCOMING_RTL (decl); |
a3f97cbb | 8800 | } |
5a904a61 JW |
8801 | |
8802 | /* If the parm was passed in registers, but lives on the stack, then | |
8803 | make a big endian correction if the mode of the type of the | |
8804 | parameter is not the same as the mode of the rtl. */ | |
8805 | /* ??? This is the same series of checks that are made in dbxout.c before | |
8806 | we reach the big endian correction code there. It isn't clear if all | |
8807 | of these checks are necessary here, but keeping them all is the safe | |
8808 | thing to do. */ | |
8809 | else if (GET_CODE (rtl) == MEM | |
8810 | && XEXP (rtl, 0) != const0_rtx | |
8811 | && ! CONSTANT_P (XEXP (rtl, 0)) | |
8812 | /* Not passed in memory. */ | |
8813 | && GET_CODE (DECL_INCOMING_RTL (decl)) != MEM | |
8814 | /* Not passed by invisible reference. */ | |
8815 | && (GET_CODE (XEXP (rtl, 0)) != REG | |
8816 | || REGNO (XEXP (rtl, 0)) == HARD_FRAME_POINTER_REGNUM | |
8817 | || REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM | |
8818 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM | |
8819 | || REGNO (XEXP (rtl, 0)) == ARG_POINTER_REGNUM | |
8820 | #endif | |
8821 | ) | |
8822 | /* Big endian correction check. */ | |
8823 | && BYTES_BIG_ENDIAN | |
8824 | && TYPE_MODE (TREE_TYPE (decl)) != GET_MODE (rtl) | |
8825 | && (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl))) | |
8826 | < UNITS_PER_WORD)) | |
8827 | { | |
8828 | int offset = (UNITS_PER_WORD | |
8829 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl)))); | |
8830 | rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (decl)), | |
8831 | plus_constant (XEXP (rtl, 0), offset)); | |
8832 | } | |
a3f97cbb | 8833 | } |
71dfc51f | 8834 | |
d8041cc8 RH |
8835 | if (rtl != NULL_RTX) |
8836 | { | |
8837 | rtl = eliminate_regs (rtl, 0, NULL_RTX); | |
6a7a9f01 | 8838 | #ifdef LEAF_REG_REMAP |
d8041cc8 RH |
8839 | if (current_function_uses_only_leaf_regs) |
8840 | leaf_renumber_regs_insn (rtl); | |
6a7a9f01 | 8841 | #endif |
d8041cc8 RH |
8842 | } |
8843 | ||
8844 | return rtl; | |
8845 | } | |
8846 | ||
8847 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
8848 | data attribute for a variable or a parameter. We generate the | |
8849 | DW_AT_const_value attribute only in those cases where the given variable | |
8850 | or parameter does not have a true "location" either in memory or in a | |
8851 | register. This can happen (for example) when a constant is passed as an | |
8852 | actual argument in a call to an inline function. (It's possible that | |
8853 | these things can crop up in other ways also.) Note that one type of | |
8854 | constant value which can be passed into an inlined function is a constant | |
8855 | pointer. This can happen for example if an actual argument in an inlined | |
8856 | function call evaluates to a compile-time constant address. */ | |
8857 | ||
8858 | static void | |
8859 | add_location_or_const_value_attribute (die, decl) | |
8860 | register dw_die_ref die; | |
8861 | register tree decl; | |
8862 | { | |
8863 | register rtx rtl; | |
8864 | ||
8865 | if (TREE_CODE (decl) == ERROR_MARK) | |
8866 | return; | |
8867 | ||
8868 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
8869 | abort (); | |
8870 | ||
8871 | rtl = rtl_for_decl_location (decl); | |
a97c9600 RH |
8872 | if (rtl == NULL_RTX) |
8873 | return; | |
6a7a9f01 | 8874 | |
a3f97cbb JW |
8875 | switch (GET_CODE (rtl)) |
8876 | { | |
e9a25f70 JL |
8877 | case ADDRESSOF: |
8878 | /* The address of a variable that was optimized away; don't emit | |
8879 | anything. */ | |
8880 | break; | |
8881 | ||
a3f97cbb JW |
8882 | case CONST_INT: |
8883 | case CONST_DOUBLE: | |
8884 | case CONST_STRING: | |
8885 | case SYMBOL_REF: | |
8886 | case LABEL_REF: | |
8887 | case CONST: | |
8888 | case PLUS: | |
8889 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
8890 | add_const_value_attribute (die, rtl); | |
8891 | break; | |
8892 | ||
8893 | case MEM: | |
8894 | case REG: | |
8895 | case SUBREG: | |
4401bf24 | 8896 | case CONCAT: |
ef76d03b | 8897 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
8898 | break; |
8899 | ||
8900 | default: | |
71dfc51f | 8901 | abort (); |
a3f97cbb JW |
8902 | } |
8903 | } | |
8904 | ||
1bfb5f8f JM |
8905 | /* If we don't have a copy of this variable in memory for some reason (such |
8906 | as a C++ member constant that doesn't have an out-of-line definition), | |
8907 | we should tell the debugger about the constant value. */ | |
8908 | ||
8909 | static void | |
8910 | tree_add_const_value_attribute (var_die, decl) | |
8911 | dw_die_ref var_die; | |
8912 | tree decl; | |
8913 | { | |
8914 | tree init = DECL_INITIAL (decl); | |
8915 | tree type = TREE_TYPE (decl); | |
8916 | ||
8917 | if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl) && init | |
8918 | && initializer_constant_valid_p (init, type) == null_pointer_node) | |
8919 | /* OK */; | |
8920 | else | |
8921 | return; | |
8922 | ||
8923 | switch (TREE_CODE (type)) | |
8924 | { | |
8925 | case INTEGER_TYPE: | |
8926 | if (host_integerp (init, 0)) | |
8927 | add_AT_unsigned (var_die, DW_AT_const_value, | |
8928 | TREE_INT_CST_LOW (init)); | |
8929 | else | |
8930 | add_AT_long_long (var_die, DW_AT_const_value, | |
8931 | TREE_INT_CST_HIGH (init), | |
8932 | TREE_INT_CST_LOW (init)); | |
8933 | break; | |
8934 | ||
8935 | default:; | |
8936 | } | |
8937 | } | |
0b34cf1e | 8938 | |
a3f97cbb JW |
8939 | /* Generate an DW_AT_name attribute given some string value to be included as |
8940 | the value of the attribute. */ | |
71dfc51f RK |
8941 | |
8942 | static inline void | |
a3f97cbb JW |
8943 | add_name_attribute (die, name_string) |
8944 | register dw_die_ref die; | |
d560ee52 | 8945 | register const char *name_string; |
a3f97cbb | 8946 | { |
71dfc51f | 8947 | if (name_string != NULL && *name_string != 0) |
14a774a9 RK |
8948 | { |
8949 | if (demangle_name_func) | |
8950 | name_string = (*demangle_name_func) (name_string); | |
8951 | ||
8952 | add_AT_string (die, DW_AT_name, name_string); | |
8953 | } | |
a3f97cbb JW |
8954 | } |
8955 | ||
8956 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 8957 | a representation for that bound. */ |
71dfc51f | 8958 | |
a3f97cbb JW |
8959 | static void |
8960 | add_bound_info (subrange_die, bound_attr, bound) | |
8961 | register dw_die_ref subrange_die; | |
8962 | register enum dwarf_attribute bound_attr; | |
8963 | register tree bound; | |
8964 | { | |
ef76d03b JW |
8965 | /* If this is an Ada unconstrained array type, then don't emit any debug |
8966 | info because the array bounds are unknown. They are parameterized when | |
8967 | the type is instantiated. */ | |
8968 | if (contains_placeholder_p (bound)) | |
8969 | return; | |
8970 | ||
a3f97cbb JW |
8971 | switch (TREE_CODE (bound)) |
8972 | { | |
8973 | case ERROR_MARK: | |
8974 | return; | |
8975 | ||
8976 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
8977 | case INTEGER_CST: | |
665f2503 RK |
8978 | if (! host_integerp (bound, 0) |
8979 | || (bound_attr == DW_AT_lower_bound | |
28985b81 | 8980 | && (((is_c_family () || is_java ()) && integer_zerop (bound)) |
665f2503 RK |
8981 | || (is_fortran () && integer_onep (bound))))) |
8982 | /* use the default */ | |
8983 | ; | |
141719a8 | 8984 | else |
665f2503 | 8985 | add_AT_unsigned (subrange_die, bound_attr, tree_low_cst (bound, 0)); |
a3f97cbb JW |
8986 | break; |
8987 | ||
b1ccbc24 | 8988 | case CONVERT_EXPR: |
a3f97cbb | 8989 | case NOP_EXPR: |
b1ccbc24 RK |
8990 | case NON_LVALUE_EXPR: |
8991 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
8992 | break; | |
556273e0 | 8993 | |
a3f97cbb JW |
8994 | case SAVE_EXPR: |
8995 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
8996 | access the upper bound values may be bogus. If they refer to a |
8997 | register, they may only describe how to get at these values at the | |
8998 | points in the generated code right after they have just been | |
8999 | computed. Worse yet, in the typical case, the upper bound values | |
9000 | will not even *be* computed in the optimized code (though the | |
9001 | number of elements will), so these SAVE_EXPRs are entirely | |
9002 | bogus. In order to compensate for this fact, we check here to see | |
9003 | if optimization is enabled, and if so, we don't add an attribute | |
9004 | for the (unknown and unknowable) upper bound. This should not | |
9005 | cause too much trouble for existing (stupid?) debuggers because | |
9006 | they have to deal with empty upper bounds location descriptions | |
9007 | anyway in order to be able to deal with incomplete array types. | |
9008 | Of course an intelligent debugger (GDB?) should be able to | |
9009 | comprehend that a missing upper bound specification in a array | |
9010 | type used for a storage class `auto' local array variable | |
9011 | indicates that the upper bound is both unknown (at compile- time) | |
9012 | and unknowable (at run-time) due to optimization. | |
9013 | ||
9014 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
9015 | value there unless it was going to be used repeatedly in the | |
9016 | function, i.e. for cleanups. */ | |
1cfdcc15 JM |
9017 | if (! optimize || (SAVE_EXPR_RTL (bound) |
9018 | && GET_CODE (SAVE_EXPR_RTL (bound)) == MEM)) | |
a3f97cbb | 9019 | { |
466446b0 JM |
9020 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
9021 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
f5963e61 JL |
9022 | register rtx loc = SAVE_EXPR_RTL (bound); |
9023 | ||
9024 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
9025 | it references an outer function's frame. */ | |
9026 | ||
9027 | if (GET_CODE (loc) == MEM) | |
9028 | { | |
9029 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
9030 | ||
9031 | if (XEXP (loc, 0) != new_addr) | |
c5c76735 | 9032 | loc = gen_rtx_MEM (GET_MODE (loc), new_addr); |
f5963e61 JL |
9033 | } |
9034 | ||
466446b0 JM |
9035 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
9036 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
f5963e61 | 9037 | add_AT_location_description (decl_die, DW_AT_location, loc); |
466446b0 | 9038 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 9039 | } |
71dfc51f RK |
9040 | |
9041 | /* Else leave out the attribute. */ | |
a3f97cbb | 9042 | break; |
3f76745e | 9043 | |
ef76d03b | 9044 | case VAR_DECL: |
d8041cc8 RH |
9045 | case PARM_DECL: |
9046 | { | |
9047 | dw_die_ref decl_die = lookup_decl_die (bound); | |
9048 | ||
9049 | /* ??? Can this happen, or should the variable have been bound | |
9050 | first? Probably it can, since I imagine that we try to create | |
9051 | the types of parameters in the order in which they exist in | |
0b34cf1e | 9052 | the list, and won't have created a forward reference to a |
d8041cc8 RH |
9053 | later parameter. */ |
9054 | if (decl_die != NULL) | |
9055 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
9056 | break; | |
9057 | } | |
ef76d03b | 9058 | |
3f76745e | 9059 | default: |
d8041cc8 RH |
9060 | { |
9061 | /* Otherwise try to create a stack operation procedure to | |
9062 | evaluate the value of the array bound. */ | |
9063 | ||
9064 | dw_die_ref ctx, decl_die; | |
9065 | dw_loc_descr_ref loc; | |
9066 | ||
9067 | loc = loc_descriptor_from_tree (bound, 0); | |
9068 | if (loc == NULL) | |
9069 | break; | |
9070 | ||
9071 | ctx = lookup_decl_die (current_function_decl); | |
9072 | ||
9073 | decl_die = new_die (DW_TAG_variable, ctx); | |
9074 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
9075 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
9076 | add_AT_loc (decl_die, DW_AT_location, loc); | |
9077 | ||
9078 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
9079 | break; | |
9080 | } | |
a3f97cbb JW |
9081 | } |
9082 | } | |
9083 | ||
9084 | /* Note that the block of subscript information for an array type also | |
9085 | includes information about the element type of type given array type. */ | |
71dfc51f | 9086 | |
a3f97cbb JW |
9087 | static void |
9088 | add_subscript_info (type_die, type) | |
9089 | register dw_die_ref type_die; | |
9090 | register tree type; | |
9091 | { | |
081f5e7e | 9092 | #ifndef MIPS_DEBUGGING_INFO |
a3f97cbb | 9093 | register unsigned dimension_number; |
081f5e7e | 9094 | #endif |
a3f97cbb JW |
9095 | register tree lower, upper; |
9096 | register dw_die_ref subrange_die; | |
9097 | ||
556273e0 | 9098 | /* The GNU compilers represent multidimensional array types as sequences of |
a3f97cbb JW |
9099 | one dimensional array types whose element types are themselves array |
9100 | types. Here we squish that down, so that each multidimensional array | |
556273e0 | 9101 | type gets only one array_type DIE in the Dwarf debugging info. The draft |
a3f97cbb JW |
9102 | Dwarf specification say that we are allowed to do this kind of |
9103 | compression in C (because there is no difference between an array or | |
556273e0 | 9104 | arrays and a multidimensional array in C) but for other source languages |
a3f97cbb | 9105 | (e.g. Ada) we probably shouldn't do this. */ |
71dfc51f | 9106 | |
a3f97cbb JW |
9107 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
9108 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
9109 | We work around this by disabling this feature. See also | |
9110 | gen_array_type_die. */ | |
9111 | #ifndef MIPS_DEBUGGING_INFO | |
9112 | for (dimension_number = 0; | |
9113 | TREE_CODE (type) == ARRAY_TYPE; | |
9114 | type = TREE_TYPE (type), dimension_number++) | |
9115 | { | |
9116 | #endif | |
9117 | register tree domain = TYPE_DOMAIN (type); | |
9118 | ||
9119 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
556273e0 | 9120 | and (in GNU C only) variable bounds. Handle all three forms |
a3f97cbb JW |
9121 | here. */ |
9122 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
9123 | if (domain) | |
9124 | { | |
9125 | /* We have an array type with specified bounds. */ | |
9126 | lower = TYPE_MIN_VALUE (domain); | |
9127 | upper = TYPE_MAX_VALUE (domain); | |
9128 | ||
a9d38797 JM |
9129 | /* define the index type. */ |
9130 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
9131 | { |
9132 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
9133 | TREE_TYPE field. We can't emit debug info for this | |
9134 | because it is an unnamed integral type. */ | |
9135 | if (TREE_CODE (domain) == INTEGER_TYPE | |
9136 | && TYPE_NAME (domain) == NULL_TREE | |
9137 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
9138 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
556273e0 | 9139 | ; |
ef76d03b JW |
9140 | else |
9141 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
9142 | type_die); | |
9143 | } | |
a9d38797 | 9144 | |
e1ee5cdc RH |
9145 | /* ??? If upper is NULL, the array has unspecified length, |
9146 | but it does have a lower bound. This happens with Fortran | |
9147 | dimension arr(N:*) | |
9148 | Since the debugger is definitely going to need to know N | |
9149 | to produce useful results, go ahead and output the lower | |
9150 | bound solo, and hope the debugger can cope. */ | |
9151 | ||
141719a8 | 9152 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
9153 | if (upper) |
9154 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb JW |
9155 | } |
9156 | else | |
71dfc51f | 9157 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
9158 | spec does not say how to handle this; let's just leave out the |
9159 | bounds. */ | |
e49a1d2e | 9160 | {;} |
71dfc51f | 9161 | |
a3f97cbb JW |
9162 | #ifndef MIPS_DEBUGGING_INFO |
9163 | } | |
9164 | #endif | |
9165 | } | |
9166 | ||
9167 | static void | |
9168 | add_byte_size_attribute (die, tree_node) | |
9169 | dw_die_ref die; | |
9170 | register tree tree_node; | |
9171 | { | |
9172 | register unsigned size; | |
9173 | ||
9174 | switch (TREE_CODE (tree_node)) | |
9175 | { | |
9176 | case ERROR_MARK: | |
9177 | size = 0; | |
9178 | break; | |
9179 | case ENUMERAL_TYPE: | |
9180 | case RECORD_TYPE: | |
9181 | case UNION_TYPE: | |
9182 | case QUAL_UNION_TYPE: | |
9183 | size = int_size_in_bytes (tree_node); | |
9184 | break; | |
9185 | case FIELD_DECL: | |
9186 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
9187 | generally given as the number of bytes normally allocated for an | |
9188 | object of the *declared* type of the member itself. This is true | |
9189 | even for bit-fields. */ | |
9190 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
9191 | break; | |
9192 | default: | |
9193 | abort (); | |
9194 | } | |
9195 | ||
9196 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
9197 | indicates that the byte size of the entity in question is variable. We | |
9198 | have no good way of expressing this fact in Dwarf at the present time, | |
9199 | so just let the -1 pass on through. */ | |
9200 | ||
9201 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
9202 | } | |
9203 | ||
9204 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
9205 | which specifies the distance in bits from the highest order bit of the | |
9206 | "containing object" for the bit-field to the highest order bit of the | |
9207 | bit-field itself. | |
9208 | ||
b2932ae5 JM |
9209 | For any given bit-field, the "containing object" is a hypothetical |
9210 | object (of some integral or enum type) within which the given bit-field | |
9211 | lives. The type of this hypothetical "containing object" is always the | |
9212 | same as the declared type of the individual bit-field itself. The | |
9213 | determination of the exact location of the "containing object" for a | |
9214 | bit-field is rather complicated. It's handled by the | |
9215 | `field_byte_offset' function (above). | |
a3f97cbb JW |
9216 | |
9217 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
9218 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
9219 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
9220 | |
9221 | static inline void | |
a3f97cbb JW |
9222 | add_bit_offset_attribute (die, decl) |
9223 | register dw_die_ref die; | |
9224 | register tree decl; | |
9225 | { | |
665f2503 RK |
9226 | HOST_WIDE_INT object_offset_in_bytes = field_byte_offset (decl); |
9227 | tree type = DECL_BIT_FIELD_TYPE (decl); | |
9228 | HOST_WIDE_INT bitpos_int; | |
9229 | HOST_WIDE_INT highest_order_object_bit_offset; | |
9230 | HOST_WIDE_INT highest_order_field_bit_offset; | |
9231 | HOST_WIDE_INT unsigned bit_offset; | |
a3f97cbb | 9232 | |
3a88cbd1 JL |
9233 | /* Must be a field and a bit field. */ |
9234 | if (!type | |
9235 | || TREE_CODE (decl) != FIELD_DECL) | |
9236 | abort (); | |
a3f97cbb JW |
9237 | |
9238 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
9239 | encounter such things, just return without generating any attribute | |
665f2503 RK |
9240 | whatsoever. Likewise for variable or too large size. */ |
9241 | if (! host_integerp (bit_position (decl), 0) | |
9242 | || ! host_integerp (DECL_SIZE (decl), 1)) | |
71dfc51f RK |
9243 | return; |
9244 | ||
665f2503 | 9245 | bitpos_int = int_bit_position (decl); |
a3f97cbb JW |
9246 | |
9247 | /* Note that the bit offset is always the distance (in bits) from the | |
556273e0 KH |
9248 | highest-order bit of the "containing object" to the highest-order bit of |
9249 | the bit-field itself. Since the "high-order end" of any object or field | |
a3f97cbb JW |
9250 | is different on big-endian and little-endian machines, the computation |
9251 | below must take account of these differences. */ | |
9252 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
9253 | highest_order_field_bit_offset = bitpos_int; | |
9254 | ||
71dfc51f | 9255 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb | 9256 | { |
665f2503 | 9257 | highest_order_field_bit_offset += tree_low_cst (DECL_SIZE (decl), 0); |
a3f97cbb JW |
9258 | highest_order_object_bit_offset += simple_type_size_in_bits (type); |
9259 | } | |
71dfc51f RK |
9260 | |
9261 | bit_offset | |
9262 | = (! BYTES_BIG_ENDIAN | |
9263 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
9264 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
9265 | |
9266 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
9267 | } | |
9268 | ||
9269 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
9270 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
9271 | |
9272 | static inline void | |
a3f97cbb JW |
9273 | add_bit_size_attribute (die, decl) |
9274 | register dw_die_ref die; | |
9275 | register tree decl; | |
9276 | { | |
3a88cbd1 JL |
9277 | /* Must be a field and a bit field. */ |
9278 | if (TREE_CODE (decl) != FIELD_DECL | |
9279 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
9280 | abort (); | |
665f2503 RK |
9281 | |
9282 | if (host_integerp (DECL_SIZE (decl), 1)) | |
9283 | add_AT_unsigned (die, DW_AT_bit_size, tree_low_cst (DECL_SIZE (decl), 1)); | |
a3f97cbb JW |
9284 | } |
9285 | ||
88dad228 | 9286 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 9287 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
9288 | |
9289 | static inline void | |
a3f97cbb JW |
9290 | add_prototyped_attribute (die, func_type) |
9291 | register dw_die_ref die; | |
9292 | register tree func_type; | |
9293 | { | |
88dad228 JM |
9294 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
9295 | && TYPE_ARG_TYPES (func_type) != NULL) | |
9296 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
9297 | } |
9298 | ||
a3f97cbb JW |
9299 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found |
9300 | by looking in either the type declaration or object declaration | |
9301 | equate table. */ | |
71dfc51f RK |
9302 | |
9303 | static inline void | |
a3f97cbb JW |
9304 | add_abstract_origin_attribute (die, origin) |
9305 | register dw_die_ref die; | |
9306 | register tree origin; | |
9307 | { | |
9308 | dw_die_ref origin_die = NULL; | |
bbc6ae08 | 9309 | |
d10b8e05 | 9310 | if (TREE_CODE (origin) != FUNCTION_DECL) |
e40a1c67 JM |
9311 | { |
9312 | /* We may have gotten separated from the block for the inlined | |
9313 | function, if we're in an exception handler or some such; make | |
9314 | sure that the abstract function has been written out. | |
9315 | ||
9316 | Doing this for nested functions is wrong, however; functions are | |
9317 | distinct units, and our context might not even be inline. */ | |
fb13d4d0 JM |
9318 | tree fn = origin; |
9319 | if (TYPE_P (fn)) | |
9320 | fn = TYPE_STUB_DECL (fn); | |
9321 | fn = decl_function_context (fn); | |
e40a1c67 JM |
9322 | if (fn) |
9323 | gen_abstract_function (fn); | |
9324 | } | |
44db1d9c | 9325 | |
2f939d94 | 9326 | if (DECL_P (origin)) |
71dfc51f | 9327 | origin_die = lookup_decl_die (origin); |
2f939d94 | 9328 | else if (TYPE_P (origin)) |
71dfc51f RK |
9329 | origin_die = lookup_type_die (origin); |
9330 | ||
bbc6ae08 | 9331 | if (origin_die == NULL) |
1ae8994f | 9332 | abort (); |
556273e0 | 9333 | |
a3f97cbb JW |
9334 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
9335 | } | |
9336 | ||
bdb669cb JM |
9337 | /* We do not currently support the pure_virtual attribute. */ |
9338 | ||
71dfc51f | 9339 | static inline void |
a3f97cbb JW |
9340 | add_pure_or_virtual_attribute (die, func_decl) |
9341 | register dw_die_ref die; | |
9342 | register tree func_decl; | |
9343 | { | |
a94dbf2c | 9344 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 9345 | { |
bdb669cb | 9346 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
665f2503 RK |
9347 | |
9348 | if (host_integerp (DECL_VINDEX (func_decl), 0)) | |
9349 | add_AT_loc (die, DW_AT_vtable_elem_location, | |
9350 | new_loc_descr (DW_OP_constu, | |
9351 | tree_low_cst (DECL_VINDEX (func_decl), 0), | |
9352 | 0)); | |
71dfc51f | 9353 | |
a94dbf2c JM |
9354 | /* GNU extension: Record what type this method came from originally. */ |
9355 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
9356 | add_AT_die_ref (die, DW_AT_containing_type, | |
9357 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
9358 | } |
9359 | } | |
9360 | \f | |
b2932ae5 | 9361 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 9362 | |
b2932ae5 JM |
9363 | static void |
9364 | add_src_coords_attributes (die, decl) | |
9365 | register dw_die_ref die; | |
9366 | register tree decl; | |
9367 | { | |
2e18bbae RH |
9368 | register unsigned file_index = lookup_filename (&decl_file_table, |
9369 | DECL_SOURCE_FILE (decl)); | |
71dfc51f | 9370 | |
b2932ae5 JM |
9371 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
9372 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
9373 | } | |
9374 | ||
a3f97cbb JW |
9375 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
9376 | given decl, but only if it actually has a name. */ | |
71dfc51f | 9377 | |
a3f97cbb JW |
9378 | static void |
9379 | add_name_and_src_coords_attributes (die, decl) | |
9380 | register dw_die_ref die; | |
9381 | register tree decl; | |
9382 | { | |
61b32c02 | 9383 | register tree decl_name; |
71dfc51f | 9384 | |
556273e0 | 9385 | decl_name = DECL_NAME (decl); |
71dfc51f | 9386 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 9387 | { |
a1d7ffe3 | 9388 | add_name_attribute (die, dwarf2_name (decl, 0)); |
a96c67ec JM |
9389 | if (! DECL_ARTIFICIAL (decl)) |
9390 | add_src_coords_attributes (die, decl); | |
e689ae67 | 9391 | |
a1d7ffe3 | 9392 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
bc808e0b | 9393 | && TREE_PUBLIC (decl) |
a1d7ffe3 JM |
9394 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) |
9395 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
9396 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
9397 | } |
9398 | } | |
9399 | ||
556273e0 | 9400 | /* Push a new declaration scope. */ |
71dfc51f | 9401 | |
a3f97cbb JW |
9402 | static void |
9403 | push_decl_scope (scope) | |
9404 | tree scope; | |
9405 | { | |
9406 | /* Make room in the decl_scope_table, if necessary. */ | |
9407 | if (decl_scope_table_allocated == decl_scope_depth) | |
9408 | { | |
9409 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f | 9410 | decl_scope_table |
777ad4c2 JM |
9411 | = (tree *) xrealloc (decl_scope_table, |
9412 | decl_scope_table_allocated * sizeof (tree)); | |
a3f97cbb | 9413 | } |
71dfc51f | 9414 | |
777ad4c2 | 9415 | decl_scope_table[decl_scope_depth] = scope; |
e3e7774e | 9416 | decl_scope_depth++; |
a3f97cbb JW |
9417 | } |
9418 | ||
777ad4c2 JM |
9419 | /* Pop a declaration scope. */ |
9420 | static inline void | |
9421 | pop_decl_scope () | |
9422 | { | |
9423 | if (decl_scope_depth <= 0) | |
9424 | abort (); | |
9425 | --decl_scope_depth; | |
9426 | } | |
9427 | ||
9428 | /* Return the DIE for the scope that immediately contains this type. | |
9429 | Non-named types get global scope. Named types nested in other | |
9430 | types get their containing scope if it's open, or global scope | |
9431 | otherwise. All other types (i.e. function-local named types) get | |
9432 | the current active scope. */ | |
71dfc51f | 9433 | |
a3f97cbb | 9434 | static dw_die_ref |
ab72d377 | 9435 | scope_die_for (t, context_die) |
556273e0 KH |
9436 | register tree t; |
9437 | register dw_die_ref context_die; | |
a3f97cbb JW |
9438 | { |
9439 | register dw_die_ref scope_die = NULL; | |
9440 | register tree containing_scope; | |
e3e7774e | 9441 | register int i; |
a3f97cbb | 9442 | |
777ad4c2 JM |
9443 | /* Non-types always go in the current scope. */ |
9444 | if (! TYPE_P (t)) | |
9445 | abort (); | |
9446 | ||
9447 | containing_scope = TYPE_CONTEXT (t); | |
ab72d377 | 9448 | |
2addbe1d JM |
9449 | /* Ignore namespaces for the moment. */ |
9450 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
9451 | containing_scope = NULL_TREE; | |
9452 | ||
5f2f160c JM |
9453 | /* Ignore function type "scopes" from the C frontend. They mean that |
9454 | a tagged type is local to a parmlist of a function declarator, but | |
9455 | that isn't useful to DWARF. */ | |
9456 | if (containing_scope && TREE_CODE (containing_scope) == FUNCTION_TYPE) | |
9457 | containing_scope = NULL_TREE; | |
9458 | ||
71dfc51f RK |
9459 | if (containing_scope == NULL_TREE) |
9460 | scope_die = comp_unit_die; | |
777ad4c2 | 9461 | else if (TYPE_P (containing_scope)) |
348bb3c7 | 9462 | { |
777ad4c2 JM |
9463 | /* For types, we can just look up the appropriate DIE. But |
9464 | first we check to see if we're in the middle of emitting it | |
9465 | so we know where the new DIE should go. */ | |
348bb3c7 JM |
9466 | |
9467 | for (i = decl_scope_depth - 1; i >= 0; --i) | |
777ad4c2 | 9468 | if (decl_scope_table[i] == containing_scope) |
348bb3c7 JM |
9469 | break; |
9470 | ||
9471 | if (i < 0) | |
9472 | { | |
348bb3c7 JM |
9473 | if (debug_info_level > DINFO_LEVEL_TERSE |
9474 | && !TREE_ASM_WRITTEN (containing_scope)) | |
9475 | abort (); | |
9476 | ||
9477 | /* If none of the current dies are suitable, we get file scope. */ | |
9478 | scope_die = comp_unit_die; | |
9479 | } | |
9480 | else | |
777ad4c2 | 9481 | scope_die = lookup_type_die (containing_scope); |
348bb3c7 | 9482 | } |
a3f97cbb | 9483 | else |
777ad4c2 | 9484 | scope_die = context_die; |
71dfc51f | 9485 | |
a3f97cbb JW |
9486 | return scope_die; |
9487 | } | |
9488 | ||
777ad4c2 JM |
9489 | /* Returns nonzero iff CONTEXT_DIE is internal to a function. */ |
9490 | ||
c6991660 | 9491 | static inline int local_scope_p PARAMS ((dw_die_ref)); |
777ad4c2 JM |
9492 | static inline int |
9493 | local_scope_p (context_die) | |
9494 | dw_die_ref context_die; | |
a3f97cbb | 9495 | { |
777ad4c2 JM |
9496 | for (; context_die; context_die = context_die->die_parent) |
9497 | if (context_die->die_tag == DW_TAG_inlined_subroutine | |
9498 | || context_die->die_tag == DW_TAG_subprogram) | |
9499 | return 1; | |
9500 | return 0; | |
a3f97cbb JW |
9501 | } |
9502 | ||
9765e357 JM |
9503 | /* Returns nonzero iff CONTEXT_DIE is a class. */ |
9504 | ||
c6991660 | 9505 | static inline int class_scope_p PARAMS ((dw_die_ref)); |
9765e357 JM |
9506 | static inline int |
9507 | class_scope_p (context_die) | |
9508 | dw_die_ref context_die; | |
9509 | { | |
9510 | return (context_die | |
9511 | && (context_die->die_tag == DW_TAG_structure_type | |
9512 | || context_die->die_tag == DW_TAG_union_type)); | |
9513 | } | |
9514 | ||
a3f97cbb JW |
9515 | /* Many forms of DIEs require a "type description" attribute. This |
9516 | routine locates the proper "type descriptor" die for the type given | |
9517 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 9518 | |
a3f97cbb JW |
9519 | static void |
9520 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
9521 | register dw_die_ref object_die; | |
9522 | register tree type; | |
9523 | register int decl_const; | |
9524 | register int decl_volatile; | |
9525 | register dw_die_ref context_die; | |
9526 | { | |
9527 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
9528 | register dw_die_ref type_die = NULL; |
9529 | ||
ef76d03b JW |
9530 | /* ??? If this type is an unnamed subrange type of an integral or |
9531 | floating-point type, use the inner type. This is because we have no | |
9532 | support for unnamed types in base_type_die. This can happen if this is | |
9533 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
9534 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
9535 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
9536 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
9537 | ||
a3f97cbb | 9538 | if (code == ERROR_MARK) |
b1ccbc24 | 9539 | return; |
a3f97cbb JW |
9540 | |
9541 | /* Handle a special case. For functions whose return type is void, we | |
9542 | generate *no* type attribute. (Note that no object may have type | |
9543 | `void', so this only applies to function return types). */ | |
9544 | if (code == VOID_TYPE) | |
b1ccbc24 | 9545 | return; |
a3f97cbb | 9546 | |
a3f97cbb JW |
9547 | type_die = modified_type_die (type, |
9548 | decl_const || TYPE_READONLY (type), | |
9549 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 9550 | context_die); |
a3f97cbb | 9551 | if (type_die != NULL) |
71dfc51f | 9552 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
9553 | } |
9554 | ||
9555 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
9556 | a pointer to the (string) tag name for the given type, or zero if the type | |
9557 | was declared without a tag. */ | |
71dfc51f | 9558 | |
d3e3972c | 9559 | static const char * |
a3f97cbb JW |
9560 | type_tag (type) |
9561 | register tree type; | |
9562 | { | |
d3e3972c | 9563 | register const char *name = 0; |
a3f97cbb JW |
9564 | |
9565 | if (TYPE_NAME (type) != 0) | |
9566 | { | |
9567 | register tree t = 0; | |
9568 | ||
9569 | /* Find the IDENTIFIER_NODE for the type name. */ | |
9570 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
9571 | t = TYPE_NAME (type); | |
bdb669cb | 9572 | |
556273e0 | 9573 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
a3f97cbb | 9574 | a TYPE_DECL node, regardless of whether or not a `typedef' was |
bdb669cb | 9575 | involved. */ |
a94dbf2c JM |
9576 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
9577 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 9578 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 9579 | |
a3f97cbb JW |
9580 | /* Now get the name as a string, or invent one. */ |
9581 | if (t != 0) | |
a94dbf2c | 9582 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 9583 | } |
71dfc51f | 9584 | |
a3f97cbb JW |
9585 | return (name == 0 || *name == '\0') ? 0 : name; |
9586 | } | |
9587 | ||
9588 | /* Return the type associated with a data member, make a special check | |
9589 | for bit field types. */ | |
71dfc51f RK |
9590 | |
9591 | static inline tree | |
a3f97cbb JW |
9592 | member_declared_type (member) |
9593 | register tree member; | |
9594 | { | |
71dfc51f RK |
9595 | return (DECL_BIT_FIELD_TYPE (member) |
9596 | ? DECL_BIT_FIELD_TYPE (member) | |
9597 | : TREE_TYPE (member)); | |
a3f97cbb JW |
9598 | } |
9599 | ||
d291dd49 | 9600 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 9601 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 9602 | |
487a6e06 | 9603 | #if 0 |
d3e3972c | 9604 | static const char * |
d291dd49 | 9605 | decl_start_label (decl) |
a3f97cbb JW |
9606 | register tree decl; |
9607 | { | |
9608 | rtx x; | |
d3e3972c | 9609 | const char *fnname; |
a3f97cbb JW |
9610 | x = DECL_RTL (decl); |
9611 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
9612 | abort (); |
9613 | ||
a3f97cbb JW |
9614 | x = XEXP (x, 0); |
9615 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
9616 | abort (); |
9617 | ||
a3f97cbb JW |
9618 | fnname = XSTR (x, 0); |
9619 | return fnname; | |
9620 | } | |
487a6e06 | 9621 | #endif |
a3f97cbb | 9622 | \f |
956d6950 | 9623 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 9624 | the compilation unit. Debugging information is collected by walking |
88dad228 | 9625 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
9626 | |
9627 | static void | |
9628 | gen_array_type_die (type, context_die) | |
9629 | register tree type; | |
9630 | register dw_die_ref context_die; | |
9631 | { | |
ab72d377 | 9632 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 9633 | register dw_die_ref array_die; |
a3f97cbb | 9634 | register tree element_type; |
bdb669cb | 9635 | |
a9d38797 JM |
9636 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
9637 | the inner array type comes before the outer array type. Thus we must | |
9638 | call gen_type_die before we call new_die. See below also. */ | |
9639 | #ifdef MIPS_DEBUGGING_INFO | |
9640 | gen_type_die (TREE_TYPE (type), context_die); | |
9641 | #endif | |
9642 | ||
9643 | array_die = new_die (DW_TAG_array_type, scope_die); | |
9644 | ||
a3f97cbb JW |
9645 | #if 0 |
9646 | /* We default the array ordering. SDB will probably do | |
9647 | the right things even if DW_AT_ordering is not present. It's not even | |
9648 | an issue until we start to get into multidimensional arrays anyway. If | |
9649 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
9650 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
9651 | and when we find out that we need to put these in, we will only do so | |
9652 | for multidimensional arrays. */ | |
9653 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
9654 | #endif | |
9655 | ||
a9d38797 | 9656 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
9657 | /* The SGI compilers handle arrays of unknown bound by setting |
9658 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
9659 | if (! TYPE_DOMAIN (type)) |
9660 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
9661 | else | |
9662 | #endif | |
9663 | add_subscript_info (array_die, type); | |
a3f97cbb | 9664 | |
14a774a9 | 9665 | add_name_attribute (array_die, type_tag (type)); |
a3f97cbb JW |
9666 | equate_type_number_to_die (type, array_die); |
9667 | ||
9668 | /* Add representation of the type of the elements of this array type. */ | |
9669 | element_type = TREE_TYPE (type); | |
71dfc51f | 9670 | |
a3f97cbb JW |
9671 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
9672 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
9673 | We work around this by disabling this feature. See also | |
9674 | add_subscript_info. */ | |
9675 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
9676 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
9677 | element_type = TREE_TYPE (element_type); | |
9678 | ||
a3f97cbb | 9679 | gen_type_die (element_type, context_die); |
a9d38797 | 9680 | #endif |
a3f97cbb JW |
9681 | |
9682 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
9683 | } | |
9684 | ||
9685 | static void | |
9686 | gen_set_type_die (type, context_die) | |
9687 | register tree type; | |
9688 | register dw_die_ref context_die; | |
9689 | { | |
71dfc51f RK |
9690 | register dw_die_ref type_die |
9691 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
9692 | ||
a3f97cbb | 9693 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
9694 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
9695 | } | |
9696 | ||
d6f4ec51 | 9697 | #if 0 |
a3f97cbb JW |
9698 | static void |
9699 | gen_entry_point_die (decl, context_die) | |
9700 | register tree decl; | |
9701 | register dw_die_ref context_die; | |
9702 | { | |
9703 | register tree origin = decl_ultimate_origin (decl); | |
9704 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
9705 | if (origin != NULL) | |
71dfc51f | 9706 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
9707 | else |
9708 | { | |
9709 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
9710 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
9711 | 0, 0, context_die); | |
9712 | } | |
71dfc51f | 9713 | |
a3f97cbb | 9714 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 9715 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 9716 | else |
71dfc51f | 9717 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 9718 | } |
d6f4ec51 | 9719 | #endif |
a3f97cbb | 9720 | |
8a8c3656 JM |
9721 | /* Remember a type in the incomplete_types_list. */ |
9722 | ||
9723 | static void | |
9724 | add_incomplete_type (type) | |
9725 | tree type; | |
9726 | { | |
9727 | if (incomplete_types == incomplete_types_allocated) | |
9728 | { | |
9729 | incomplete_types_allocated += INCOMPLETE_TYPES_INCREMENT; | |
9730 | incomplete_types_list | |
9731 | = (tree *) xrealloc (incomplete_types_list, | |
9732 | sizeof (tree) * incomplete_types_allocated); | |
9733 | } | |
9734 | ||
9735 | incomplete_types_list[incomplete_types++] = type; | |
9736 | } | |
9737 | ||
9738 | /* Walk through the list of incomplete types again, trying once more to | |
9739 | emit full debugging info for them. */ | |
9740 | ||
9741 | static void | |
9742 | retry_incomplete_types () | |
9743 | { | |
9744 | register tree type; | |
9745 | ||
9746 | while (incomplete_types) | |
9747 | { | |
9748 | --incomplete_types; | |
9749 | type = incomplete_types_list[incomplete_types]; | |
9750 | gen_type_die (type, comp_unit_die); | |
9751 | } | |
9752 | } | |
9753 | ||
a3f97cbb | 9754 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 9755 | |
a3f97cbb JW |
9756 | static void |
9757 | gen_inlined_enumeration_type_die (type, context_die) | |
9758 | register tree type; | |
9759 | register dw_die_ref context_die; | |
9760 | { | |
71dfc51f | 9761 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
777ad4c2 | 9762 | context_die); |
bbc6ae08 NC |
9763 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9764 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9765 | add_abstract_origin_attribute (type_die, type); |
9766 | } | |
9767 | ||
9768 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 9769 | |
a3f97cbb JW |
9770 | static void |
9771 | gen_inlined_structure_type_die (type, context_die) | |
9772 | register tree type; | |
9773 | register dw_die_ref context_die; | |
9774 | { | |
777ad4c2 JM |
9775 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, context_die); |
9776 | ||
bbc6ae08 NC |
9777 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9778 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9779 | add_abstract_origin_attribute (type_die, type); |
9780 | } | |
9781 | ||
9782 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 9783 | |
a3f97cbb JW |
9784 | static void |
9785 | gen_inlined_union_type_die (type, context_die) | |
9786 | register tree type; | |
9787 | register dw_die_ref context_die; | |
9788 | { | |
777ad4c2 JM |
9789 | register dw_die_ref type_die = new_die (DW_TAG_union_type, context_die); |
9790 | ||
bbc6ae08 NC |
9791 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9792 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9793 | add_abstract_origin_attribute (type_die, type); |
9794 | } | |
9795 | ||
9796 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
9797 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
9798 | enumerated type name/value is listed as a child of the enumerated type |
9799 | DIE. */ | |
71dfc51f | 9800 | |
a3f97cbb | 9801 | static void |
273dbe67 | 9802 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 9803 | register tree type; |
a3f97cbb JW |
9804 | register dw_die_ref context_die; |
9805 | { | |
273dbe67 JM |
9806 | register dw_die_ref type_die = lookup_type_die (type); |
9807 | ||
a3f97cbb JW |
9808 | if (type_die == NULL) |
9809 | { | |
9810 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 9811 | scope_die_for (type, context_die)); |
a3f97cbb JW |
9812 | equate_type_number_to_die (type, type_die); |
9813 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 9814 | } |
273dbe67 JM |
9815 | else if (! TYPE_SIZE (type)) |
9816 | return; | |
9817 | else | |
9818 | remove_AT (type_die, DW_AT_declaration); | |
9819 | ||
9820 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
9821 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
9822 | attribute or the DW_AT_element_list attribute. */ | |
9823 | if (TYPE_SIZE (type)) | |
a3f97cbb | 9824 | { |
273dbe67 | 9825 | register tree link; |
71dfc51f | 9826 | |
a082c85a | 9827 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 9828 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 9829 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 9830 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 9831 | |
ef76d03b JW |
9832 | /* If the first reference to this type was as the return type of an |
9833 | inline function, then it may not have a parent. Fix this now. */ | |
9834 | if (type_die->die_parent == NULL) | |
9835 | add_child_die (scope_die_for (type, context_die), type_die); | |
9836 | ||
273dbe67 JM |
9837 | for (link = TYPE_FIELDS (type); |
9838 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 9839 | { |
273dbe67 | 9840 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 9841 | |
273dbe67 JM |
9842 | add_name_attribute (enum_die, |
9843 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
665f2503 RK |
9844 | |
9845 | if (host_integerp (TREE_VALUE (link), 0)) | |
fc9e8a14 JJ |
9846 | { |
9847 | if (tree_int_cst_sgn (TREE_VALUE (link)) < 0) | |
9848 | add_AT_int (enum_die, DW_AT_const_value, | |
9849 | tree_low_cst (TREE_VALUE (link), 0)); | |
9850 | else | |
9851 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
9852 | tree_low_cst (TREE_VALUE (link), 0)); | |
9853 | } | |
a3f97cbb JW |
9854 | } |
9855 | } | |
273dbe67 JM |
9856 | else |
9857 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
9858 | } |
9859 | ||
a3f97cbb JW |
9860 | /* Generate a DIE to represent either a real live formal parameter decl or to |
9861 | represent just the type of some formal parameter position in some function | |
9862 | type. | |
71dfc51f | 9863 | |
a3f97cbb JW |
9864 | Note that this routine is a bit unusual because its argument may be a |
9865 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
9866 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
9867 | node. If it's the former then this function is being called to output a | |
9868 | DIE to represent a formal parameter object (or some inlining thereof). If | |
9869 | it's the latter, then this function is only being called to output a | |
9870 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
9871 | argument type of some subprogram type. */ | |
71dfc51f | 9872 | |
a94dbf2c | 9873 | static dw_die_ref |
a3f97cbb JW |
9874 | gen_formal_parameter_die (node, context_die) |
9875 | register tree node; | |
9876 | register dw_die_ref context_die; | |
9877 | { | |
71dfc51f RK |
9878 | register dw_die_ref parm_die |
9879 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 9880 | register tree origin; |
71dfc51f | 9881 | |
a3f97cbb JW |
9882 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
9883 | { | |
a3f97cbb JW |
9884 | case 'd': |
9885 | origin = decl_ultimate_origin (node); | |
9886 | if (origin != NULL) | |
a94dbf2c | 9887 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
9888 | else |
9889 | { | |
9890 | add_name_and_src_coords_attributes (parm_die, node); | |
9891 | add_type_attribute (parm_die, TREE_TYPE (node), | |
9892 | TREE_READONLY (node), | |
9893 | TREE_THIS_VOLATILE (node), | |
9894 | context_die); | |
bdb669cb JM |
9895 | if (DECL_ARTIFICIAL (node)) |
9896 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 9897 | } |
71dfc51f | 9898 | |
141719a8 JM |
9899 | equate_decl_number_to_die (node, parm_die); |
9900 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 9901 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 9902 | |
a3f97cbb JW |
9903 | break; |
9904 | ||
a3f97cbb | 9905 | case 't': |
71dfc51f | 9906 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
9907 | add_type_attribute (parm_die, node, 0, 0, context_die); |
9908 | break; | |
9909 | ||
a3f97cbb JW |
9910 | default: |
9911 | abort (); | |
9912 | } | |
71dfc51f | 9913 | |
a94dbf2c | 9914 | return parm_die; |
a3f97cbb JW |
9915 | } |
9916 | ||
9917 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
9918 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 9919 | |
a3f97cbb JW |
9920 | static void |
9921 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
2618f955 | 9922 | register tree decl_or_type ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9923 | register dw_die_ref context_die; |
9924 | { | |
487a6e06 | 9925 | new_die (DW_TAG_unspecified_parameters, context_die); |
a3f97cbb JW |
9926 | } |
9927 | ||
9928 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
9929 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
9930 | parameters as specified in some function type specification (except for | |
1cfdcc15 | 9931 | those which appear as part of a function *definition*). */ |
71dfc51f | 9932 | |
a3f97cbb JW |
9933 | static void |
9934 | gen_formal_types_die (function_or_method_type, context_die) | |
9935 | register tree function_or_method_type; | |
9936 | register dw_die_ref context_die; | |
9937 | { | |
9938 | register tree link; | |
9939 | register tree formal_type = NULL; | |
9940 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
9941 | ||
bdb669cb | 9942 | #if 0 |
a3f97cbb JW |
9943 | /* In the case where we are generating a formal types list for a C++ |
9944 | non-static member function type, skip over the first thing on the | |
9945 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
9946 | `this pointer'. The debugger should be able to figure out (without | |
556273e0 KH |
9947 | being explicitly told) that this non-static member function type takes a |
9948 | `this pointer' and should be able to figure what the type of that hidden | |
a3f97cbb JW |
9949 | parameter is from the DW_AT_member attribute of the parent |
9950 | DW_TAG_subroutine_type DIE. */ | |
9951 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
9952 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 9953 | #endif |
a3f97cbb | 9954 | |
556273e0 | 9955 | /* Make our first pass over the list of formal parameter types and output a |
a3f97cbb JW |
9956 | DW_TAG_formal_parameter DIE for each one. */ |
9957 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
9958 | { | |
a94dbf2c | 9959 | register dw_die_ref parm_die; |
556273e0 | 9960 | |
a3f97cbb JW |
9961 | formal_type = TREE_VALUE (link); |
9962 | if (formal_type == void_type_node) | |
9963 | break; | |
9964 | ||
9965 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
9966 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
9967 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
9968 | && link == first_parm_type) | |
9969 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
9970 | } |
9971 | ||
9972 | /* If this function type has an ellipsis, add a | |
9973 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
9974 | if (formal_type != void_type_node) | |
9975 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
9976 | ||
556273e0 | 9977 | /* Make our second (and final) pass over the list of formal parameter types |
a3f97cbb JW |
9978 | and output DIEs to represent those types (as necessary). */ |
9979 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
9980 | link; | |
9981 | link = TREE_CHAIN (link)) | |
9982 | { | |
9983 | formal_type = TREE_VALUE (link); | |
9984 | if (formal_type == void_type_node) | |
9985 | break; | |
9986 | ||
b50c02f9 | 9987 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
9988 | } |
9989 | } | |
9990 | ||
10a11b75 JM |
9991 | /* We want to generate the DIE for TYPE so that we can generate the |
9992 | die for MEMBER, which has been defined; we will need to refer back | |
9993 | to the member declaration nested within TYPE. If we're trying to | |
9994 | generate minimal debug info for TYPE, processing TYPE won't do the | |
9995 | trick; we need to attach the member declaration by hand. */ | |
9996 | ||
9997 | static void | |
9998 | gen_type_die_for_member (type, member, context_die) | |
9999 | tree type, member; | |
10000 | dw_die_ref context_die; | |
10001 | { | |
10002 | gen_type_die (type, context_die); | |
10003 | ||
10004 | /* If we're trying to avoid duplicate debug info, we may not have | |
10005 | emitted the member decl for this function. Emit it now. */ | |
10006 | if (TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)) | |
10007 | && ! lookup_decl_die (member)) | |
10008 | { | |
10009 | if (decl_ultimate_origin (member)) | |
10010 | abort (); | |
10011 | ||
10012 | push_decl_scope (type); | |
10013 | if (TREE_CODE (member) == FUNCTION_DECL) | |
10014 | gen_subprogram_die (member, lookup_type_die (type)); | |
10015 | else | |
10016 | gen_variable_die (member, lookup_type_die (type)); | |
10017 | pop_decl_scope (); | |
10018 | } | |
10019 | } | |
10020 | ||
10021 | /* Generate the DWARF2 info for the "abstract" instance | |
10022 | of a function which we may later generate inlined and/or | |
10023 | out-of-line instances of. */ | |
10024 | ||
10025 | static void | |
10026 | gen_abstract_function (decl) | |
10027 | tree decl; | |
10028 | { | |
10029 | register dw_die_ref old_die = lookup_decl_die (decl); | |
777ad4c2 | 10030 | tree save_fn; |
10a11b75 JM |
10031 | |
10032 | if (old_die && get_AT_unsigned (old_die, DW_AT_inline)) | |
10033 | /* We've already generated the abstract instance. */ | |
10034 | return; | |
10035 | ||
777ad4c2 JM |
10036 | save_fn = current_function_decl; |
10037 | current_function_decl = decl; | |
10038 | ||
10a11b75 JM |
10039 | set_decl_abstract_flags (decl, 1); |
10040 | dwarf2out_decl (decl); | |
10041 | set_decl_abstract_flags (decl, 0); | |
777ad4c2 JM |
10042 | |
10043 | current_function_decl = save_fn; | |
10a11b75 JM |
10044 | } |
10045 | ||
a3f97cbb JW |
10046 | /* Generate a DIE to represent a declared function (either file-scope or |
10047 | block-local). */ | |
71dfc51f | 10048 | |
a3f97cbb JW |
10049 | static void |
10050 | gen_subprogram_die (decl, context_die) | |
10051 | register tree decl; | |
10052 | register dw_die_ref context_die; | |
10053 | { | |
10054 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
10055 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 10056 | register dw_die_ref subr_die; |
b1ccbc24 | 10057 | register rtx fp_reg; |
a3f97cbb JW |
10058 | register tree fn_arg_types; |
10059 | register tree outer_scope; | |
a94dbf2c | 10060 | register dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
10061 | register int declaration = (current_function_decl != decl |
10062 | || class_scope_p (context_die)); | |
a3f97cbb | 10063 | |
10a11b75 JM |
10064 | /* Note that it is possible to have both DECL_ABSTRACT and `declaration' |
10065 | be true, if we started to generate the abstract instance of an inline, | |
10066 | decided to output its containing class, and proceeded to emit the | |
10067 | declaration of the inline from the member list for the class. In that | |
10068 | case, `declaration' takes priority; we'll get back to the abstract | |
10069 | instance when we're done with the class. */ | |
10070 | ||
1cfdcc15 JM |
10071 | /* The class-scope declaration DIE must be the primary DIE. */ |
10072 | if (origin && declaration && class_scope_p (context_die)) | |
10073 | { | |
10074 | origin = NULL; | |
10075 | if (old_die) | |
10076 | abort (); | |
10077 | } | |
10078 | ||
a3f97cbb JW |
10079 | if (origin != NULL) |
10080 | { | |
777ad4c2 | 10081 | if (declaration && ! local_scope_p (context_die)) |
10a11b75 JM |
10082 | abort (); |
10083 | ||
8d8238b6 JM |
10084 | /* Fixup die_parent for the abstract instance of a nested |
10085 | inline function. */ | |
10086 | if (old_die && old_die->die_parent == NULL) | |
10087 | add_child_die (context_die, old_die); | |
10088 | ||
4b674448 | 10089 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
10090 | add_abstract_origin_attribute (subr_die, origin); |
10091 | } | |
4401bf24 JL |
10092 | else if (old_die && DECL_ABSTRACT (decl) |
10093 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
10094 | { | |
10095 | /* This must be a redefinition of an extern inline function. | |
10096 | We can just reuse the old die here. */ | |
10097 | subr_die = old_die; | |
10098 | ||
10099 | /* Clear out the inlined attribute and parm types. */ | |
10100 | remove_AT (subr_die, DW_AT_inline); | |
10101 | remove_children (subr_die); | |
10102 | } | |
bdb669cb JM |
10103 | else if (old_die) |
10104 | { | |
4b674448 | 10105 | register unsigned file_index |
2e18bbae | 10106 | = lookup_filename (&decl_file_table, DECL_SOURCE_FILE (decl)); |
a94dbf2c | 10107 | |
3a88cbd1 | 10108 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
b75ab88b NC |
10109 | { |
10110 | /* ??? This can happen if there is a bug in the program, for | |
10111 | instance, if it has duplicate function definitions. Ideally, | |
10112 | we should detect this case and ignore it. For now, if we have | |
10113 | already reported an error, any error at all, then assume that | |
10114 | we got here because of a input error, not a dwarf2 bug. */ | |
b75ab88b NC |
10115 | if (errorcount) |
10116 | return; | |
10117 | abort (); | |
10118 | } | |
4b674448 JM |
10119 | |
10120 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
10121 | maybe use the old DIE. We always want the DIE for this function |
10122 | that has the *_pc attributes to be under comp_unit_die so the | |
cb9e9d8d JM |
10123 | debugger can find it. We also need to do this for abstract |
10124 | instances of inlines, since the spec requires the out-of-line copy | |
10125 | to have the same parent. For local class methods, this doesn't | |
10126 | apply; we just use the old DIE. */ | |
10127 | if ((old_die->die_parent == comp_unit_die || context_die == NULL) | |
a96c67ec JM |
10128 | && (DECL_ARTIFICIAL (decl) |
10129 | || (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
10130 | && (get_AT_unsigned (old_die, DW_AT_decl_line) | |
556273e0 | 10131 | == (unsigned) DECL_SOURCE_LINE (decl))))) |
bdb669cb | 10132 | { |
4b674448 JM |
10133 | subr_die = old_die; |
10134 | ||
10135 | /* Clear out the declaration attribute and the parm types. */ | |
10136 | remove_AT (subr_die, DW_AT_declaration); | |
10137 | remove_children (subr_die); | |
10138 | } | |
10139 | else | |
10140 | { | |
10141 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
10142 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
10143 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
10144 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
10145 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
556273e0 | 10146 | != (unsigned) DECL_SOURCE_LINE (decl)) |
bdb669cb JM |
10147 | add_AT_unsigned |
10148 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
10149 | } | |
10150 | } | |
a3f97cbb JW |
10151 | else |
10152 | { | |
777ad4c2 | 10153 | subr_die = new_die (DW_TAG_subprogram, context_die); |
556273e0 | 10154 | |
273dbe67 JM |
10155 | if (TREE_PUBLIC (decl)) |
10156 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 10157 | |
a3f97cbb | 10158 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
10159 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10160 | { | |
10161 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 10162 | |
4927276d JM |
10163 | add_prototyped_attribute (subr_die, type); |
10164 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
10165 | } | |
71dfc51f | 10166 | |
a3f97cbb | 10167 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
10168 | if (DECL_ARTIFICIAL (decl)) |
10169 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
10170 | if (TREE_PROTECTED (decl)) |
10171 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
10172 | else if (TREE_PRIVATE (decl)) | |
10173 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 10174 | } |
4edb7b60 | 10175 | |
a94dbf2c JM |
10176 | if (declaration) |
10177 | { | |
777ad4c2 JM |
10178 | if (! origin) |
10179 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
a94dbf2c JM |
10180 | |
10181 | /* The first time we see a member function, it is in the context of | |
10182 | the class to which it belongs. We make sure of this by emitting | |
10183 | the class first. The next time is the definition, which is | |
10184 | handled above. The two may come from the same source text. */ | |
777ad4c2 | 10185 | if (DECL_CONTEXT (decl) || DECL_ABSTRACT (decl)) |
a94dbf2c JM |
10186 | equate_decl_number_to_die (decl, subr_die); |
10187 | } | |
10188 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 10189 | { |
10a11b75 | 10190 | if (DECL_INLINE (decl) && !flag_no_inline) |
61b32c02 | 10191 | { |
10a11b75 JM |
10192 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static |
10193 | inline functions, but not for extern inline functions. | |
10194 | We can't get this completely correct because information | |
10195 | about whether the function was declared inline is not | |
10196 | saved anywhere. */ | |
10197 | if (DECL_DEFER_OUTPUT (decl)) | |
61b32c02 JM |
10198 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); |
10199 | else | |
10a11b75 | 10200 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); |
61b32c02 | 10201 | } |
61b32c02 | 10202 | else |
10a11b75 | 10203 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_not_inlined); |
61b32c02 | 10204 | |
a3f97cbb JW |
10205 | equate_decl_number_to_die (decl, subr_die); |
10206 | } | |
10207 | else if (!DECL_EXTERNAL (decl)) | |
10208 | { | |
71dfc51f | 10209 | if (origin == NULL_TREE) |
ba7b35df | 10210 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 10211 | |
5c90448c JM |
10212 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
10213 | current_funcdef_number); | |
7d4440be | 10214 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
10215 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
10216 | current_funcdef_number); | |
a3f97cbb JW |
10217 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
10218 | ||
d291dd49 JM |
10219 | add_pubname (decl, subr_die); |
10220 | add_arange (decl, subr_die); | |
10221 | ||
a3f97cbb | 10222 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
10223 | /* Add a reference to the FDE for this routine. */ |
10224 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
10225 | #endif | |
10226 | ||
810429b7 JM |
10227 | /* Define the "frame base" location for this routine. We use the |
10228 | frame pointer or stack pointer registers, since the RTL for local | |
10229 | variables is relative to one of them. */ | |
b1ccbc24 RK |
10230 | fp_reg |
10231 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
10232 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 10233 | |
ef76d03b JW |
10234 | #if 0 |
10235 | /* ??? This fails for nested inline functions, because context_display | |
10236 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 10237 | if (current_function_needs_context) |
ef76d03b JW |
10238 | add_AT_location_description (subr_die, DW_AT_static_link, |
10239 | lookup_static_chain (decl)); | |
10240 | #endif | |
a3f97cbb JW |
10241 | } |
10242 | ||
10243 | /* Now output descriptions of the arguments for this function. This gets | |
556273e0 | 10244 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list |
a3f97cbb JW |
10245 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing |
10246 | `...' at the end of the formal parameter list. In order to find out if | |
10247 | there was a trailing ellipsis or not, we must instead look at the type | |
10248 | associated with the FUNCTION_DECL. This will be a node of type | |
10249 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
556273e0 | 10250 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be |
a3f97cbb | 10251 | an ellipsis at the end. */ |
71dfc51f | 10252 | |
a3f97cbb | 10253 | /* In the case where we are describing a mere function declaration, all we |
556273e0 | 10254 | need to do here (and all we *can* do here) is to describe the *types* of |
a3f97cbb | 10255 | its formal parameters. */ |
4927276d | 10256 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 10257 | ; |
4edb7b60 JM |
10258 | else if (declaration) |
10259 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
10260 | else |
10261 | { | |
10262 | /* Generate DIEs to represent all known formal parameters */ | |
10263 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
10264 | register tree parm; | |
10265 | ||
10266 | /* When generating DIEs, generate the unspecified_parameters DIE | |
10267 | instead if we come across the arg "__builtin_va_alist" */ | |
10268 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
10269 | if (TREE_CODE (parm) == PARM_DECL) |
10270 | { | |
db3cf6fb MS |
10271 | if (DECL_NAME (parm) |
10272 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
10273 | "__builtin_va_alist")) | |
71dfc51f RK |
10274 | gen_unspecified_parameters_die (parm, subr_die); |
10275 | else | |
10276 | gen_decl_die (parm, subr_die); | |
10277 | } | |
a3f97cbb JW |
10278 | |
10279 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
556273e0 | 10280 | There are 2 more cases to do this for: 1) the ansi ... declaration - |
a3f97cbb JW |
10281 | this is detectable when the end of the arg list is not a |
10282 | void_type_node 2) an unprototyped function declaration (not a | |
10283 | definition). This just means that we have no info about the | |
10284 | parameters at all. */ | |
10285 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 10286 | if (fn_arg_types != NULL) |
a3f97cbb JW |
10287 | { |
10288 | /* this is the prototyped case, check for ... */ | |
10289 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 10290 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 10291 | } |
71dfc51f RK |
10292 | else if (DECL_INITIAL (decl) == NULL_TREE) |
10293 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
10294 | } |
10295 | ||
10296 | /* Output Dwarf info for all of the stuff within the body of the function | |
10297 | (if it has one - it may be just a declaration). */ | |
10298 | outer_scope = DECL_INITIAL (decl); | |
10299 | ||
d7248bff JM |
10300 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
10301 | node created to represent a function. This outermost BLOCK actually | |
10302 | represents the outermost binding contour for the function, i.e. the | |
10303 | contour in which the function's formal parameters and labels get | |
10304 | declared. Curiously, it appears that the front end doesn't actually | |
10305 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
10306 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
10307 | list for the function instead.) The BLOCK_VARS list for the | |
10308 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
10309 | the function however, and we output DWARF info for those in | |
10310 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
10311 | node representing the function's outermost pair of curly braces, and | |
10312 | any blocks used for the base and member initializers of a C++ | |
10313 | constructor function. */ | |
4edb7b60 | 10314 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
10315 | { |
10316 | current_function_has_inlines = 0; | |
10317 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 10318 | |
ce61cc73 | 10319 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
10320 | if (current_function_has_inlines) |
10321 | { | |
10322 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
10323 | if (! comp_unit_has_inlines) | |
10324 | { | |
10325 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
10326 | comp_unit_has_inlines = 1; | |
10327 | } | |
10328 | } | |
10329 | #endif | |
10330 | } | |
a3f97cbb JW |
10331 | } |
10332 | ||
10333 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 10334 | |
a3f97cbb JW |
10335 | static void |
10336 | gen_variable_die (decl, context_die) | |
10337 | register tree decl; | |
10338 | register dw_die_ref context_die; | |
10339 | { | |
10340 | register tree origin = decl_ultimate_origin (decl); | |
10341 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 10342 | |
bdb669cb | 10343 | dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
10344 | int declaration = (DECL_EXTERNAL (decl) |
10345 | || class_scope_p (context_die)); | |
4edb7b60 | 10346 | |
a3f97cbb | 10347 | if (origin != NULL) |
71dfc51f | 10348 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
10349 | /* Loop unrolling can create multiple blocks that refer to the same |
10350 | static variable, so we must test for the DW_AT_declaration flag. */ | |
10351 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
10352 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
10353 | sharing them. */ | |
10354 | else if (old_die && TREE_STATIC (decl) | |
10355 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 10356 | { |
e689ae67 | 10357 | /* This is a definition of a C++ class level static. */ |
bdb669cb JM |
10358 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
10359 | if (DECL_NAME (decl)) | |
10360 | { | |
10361 | register unsigned file_index | |
2e18bbae | 10362 | = lookup_filename (&decl_file_table, DECL_SOURCE_FILE (decl)); |
71dfc51f | 10363 | |
bdb669cb JM |
10364 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
10365 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 10366 | |
bdb669cb | 10367 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
556273e0 | 10368 | != (unsigned) DECL_SOURCE_LINE (decl)) |
71dfc51f RK |
10369 | |
10370 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
10371 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
10372 | } |
10373 | } | |
a3f97cbb JW |
10374 | else |
10375 | { | |
10376 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
10377 | add_type_attribute (var_die, TREE_TYPE (decl), |
10378 | TREE_READONLY (decl), | |
10379 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 10380 | |
273dbe67 JM |
10381 | if (TREE_PUBLIC (decl)) |
10382 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 10383 | |
273dbe67 JM |
10384 | if (DECL_ARTIFICIAL (decl)) |
10385 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 10386 | |
a94dbf2c JM |
10387 | if (TREE_PROTECTED (decl)) |
10388 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 10389 | |
a94dbf2c JM |
10390 | else if (TREE_PRIVATE (decl)) |
10391 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 10392 | } |
4edb7b60 JM |
10393 | |
10394 | if (declaration) | |
10395 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
556273e0 | 10396 | |
9765e357 | 10397 | if (class_scope_p (context_die) || DECL_ABSTRACT (decl)) |
4edb7b60 JM |
10398 | equate_decl_number_to_die (decl, var_die); |
10399 | ||
10400 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb JW |
10401 | { |
10402 | add_location_or_const_value_attribute (var_die, decl); | |
d291dd49 | 10403 | add_pubname (decl, var_die); |
a3f97cbb | 10404 | } |
1bfb5f8f JM |
10405 | else |
10406 | tree_add_const_value_attribute (var_die, decl); | |
a3f97cbb JW |
10407 | } |
10408 | ||
10409 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 10410 | |
a3f97cbb JW |
10411 | static void |
10412 | gen_label_die (decl, context_die) | |
10413 | register tree decl; | |
10414 | register dw_die_ref context_die; | |
10415 | { | |
10416 | register tree origin = decl_ultimate_origin (decl); | |
10417 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
10418 | register rtx insn; | |
10419 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 10420 | |
a3f97cbb | 10421 | if (origin != NULL) |
71dfc51f | 10422 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 10423 | else |
71dfc51f RK |
10424 | add_name_and_src_coords_attributes (lbl_die, decl); |
10425 | ||
a3f97cbb | 10426 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 10427 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
10428 | else |
10429 | { | |
10430 | insn = DECL_RTL (decl); | |
088e7160 NC |
10431 | |
10432 | /* Deleted labels are programmer specified labels which have been | |
10433 | eliminated because of various optimisations. We still emit them | |
10434 | here so that it is possible to put breakpoints on them. */ | |
10435 | if (GET_CODE (insn) == CODE_LABEL | |
10436 | || ((GET_CODE (insn) == NOTE | |
10437 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL))) | |
a3f97cbb | 10438 | { |
556273e0 KH |
10439 | /* When optimization is enabled (via -O) some parts of the compiler |
10440 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
a3f97cbb JW |
10441 | represent source-level labels which were explicitly declared by |
10442 | the user. This really shouldn't be happening though, so catch | |
10443 | it if it ever does happen. */ | |
10444 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
10445 | abort (); |
10446 | ||
66234570 | 10447 | ASM_GENERATE_INTERNAL_LABEL (label, "L", CODE_LABEL_NUMBER (insn)); |
a3f97cbb JW |
10448 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
10449 | } | |
10450 | } | |
10451 | } | |
10452 | ||
10453 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 10454 | |
a3f97cbb | 10455 | static void |
d7248bff | 10456 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
10457 | register tree stmt; |
10458 | register dw_die_ref context_die; | |
d7248bff | 10459 | int depth; |
a3f97cbb JW |
10460 | { |
10461 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
10462 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
10463 | |
10464 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 10465 | { |
5c90448c | 10466 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
18c038b9 | 10467 | BLOCK_NUMBER (stmt)); |
a3f97cbb | 10468 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
18c038b9 MM |
10469 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, |
10470 | BLOCK_NUMBER (stmt)); | |
a3f97cbb JW |
10471 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
10472 | } | |
71dfc51f | 10473 | |
d7248bff | 10474 | decls_for_scope (stmt, stmt_die, depth); |
a3f97cbb JW |
10475 | } |
10476 | ||
10477 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 10478 | |
a3f97cbb | 10479 | static void |
d7248bff | 10480 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
10481 | register tree stmt; |
10482 | register dw_die_ref context_die; | |
d7248bff | 10483 | int depth; |
a3f97cbb | 10484 | { |
71dfc51f | 10485 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 10486 | { |
71dfc51f RK |
10487 | register dw_die_ref subr_die |
10488 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 10489 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 10490 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 10491 | |
10a11b75 JM |
10492 | /* Emit info for the abstract instance first, if we haven't yet. */ |
10493 | gen_abstract_function (decl); | |
10494 | ||
ab72d377 | 10495 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c | 10496 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
18c038b9 | 10497 | BLOCK_NUMBER (stmt)); |
a3f97cbb | 10498 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
18c038b9 MM |
10499 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, |
10500 | BLOCK_NUMBER (stmt)); | |
a3f97cbb | 10501 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
d7248bff | 10502 | decls_for_scope (stmt, subr_die, depth); |
7e23cb16 | 10503 | current_function_has_inlines = 1; |
a3f97cbb | 10504 | } |
a3f97cbb JW |
10505 | } |
10506 | ||
10507 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 10508 | |
a3f97cbb JW |
10509 | static void |
10510 | gen_field_die (decl, context_die) | |
10511 | register tree decl; | |
10512 | register dw_die_ref context_die; | |
10513 | { | |
10514 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 10515 | |
a3f97cbb | 10516 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
10517 | add_type_attribute (decl_die, member_declared_type (decl), |
10518 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
10519 | context_die); | |
71dfc51f | 10520 | |
a3f97cbb JW |
10521 | /* If this is a bit field... */ |
10522 | if (DECL_BIT_FIELD_TYPE (decl)) | |
10523 | { | |
10524 | add_byte_size_attribute (decl_die, decl); | |
10525 | add_bit_size_attribute (decl_die, decl); | |
10526 | add_bit_offset_attribute (decl_die, decl); | |
10527 | } | |
71dfc51f | 10528 | |
a94dbf2c JM |
10529 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
10530 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 10531 | |
273dbe67 JM |
10532 | if (DECL_ARTIFICIAL (decl)) |
10533 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 10534 | |
a94dbf2c JM |
10535 | if (TREE_PROTECTED (decl)) |
10536 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 10537 | |
a94dbf2c JM |
10538 | else if (TREE_PRIVATE (decl)) |
10539 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
10540 | } |
10541 | ||
ab72d377 JM |
10542 | #if 0 |
10543 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
10544 | Use modified_type_die instead. | |
a3f97cbb JW |
10545 | We keep this code here just in case these types of DIEs may be needed to |
10546 | represent certain things in other languages (e.g. Pascal) someday. */ | |
10547 | static void | |
10548 | gen_pointer_type_die (type, context_die) | |
10549 | register tree type; | |
10550 | register dw_die_ref context_die; | |
10551 | { | |
71dfc51f RK |
10552 | register dw_die_ref ptr_die |
10553 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
10554 | ||
a3f97cbb | 10555 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 10556 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 10557 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
10558 | } |
10559 | ||
ab72d377 JM |
10560 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
10561 | Use modified_type_die instead. | |
a3f97cbb JW |
10562 | We keep this code here just in case these types of DIEs may be needed to |
10563 | represent certain things in other languages (e.g. Pascal) someday. */ | |
10564 | static void | |
10565 | gen_reference_type_die (type, context_die) | |
10566 | register tree type; | |
10567 | register dw_die_ref context_die; | |
10568 | { | |
71dfc51f RK |
10569 | register dw_die_ref ref_die |
10570 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
10571 | ||
a3f97cbb | 10572 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 10573 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 10574 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 10575 | } |
ab72d377 | 10576 | #endif |
a3f97cbb JW |
10577 | |
10578 | /* Generate a DIE for a pointer to a member type. */ | |
10579 | static void | |
10580 | gen_ptr_to_mbr_type_die (type, context_die) | |
10581 | register tree type; | |
10582 | register dw_die_ref context_die; | |
10583 | { | |
71dfc51f RK |
10584 | register dw_die_ref ptr_die |
10585 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
10586 | ||
a3f97cbb | 10587 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 10588 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 10589 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
10590 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
10591 | } | |
10592 | ||
10593 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 10594 | |
a96c67ec JM |
10595 | static dw_die_ref |
10596 | gen_compile_unit_die (filename) | |
10597 | register const char *filename; | |
a3f97cbb | 10598 | { |
a96c67ec | 10599 | register dw_die_ref die; |
a3f97cbb | 10600 | char producer[250]; |
d3e3972c | 10601 | const char *wd = getpwd (); |
a96c67ec | 10602 | int language; |
a3f97cbb | 10603 | |
a96c67ec JM |
10604 | die = new_die (DW_TAG_compile_unit, NULL); |
10605 | add_name_attribute (die, filename); | |
bdb669cb | 10606 | |
a96c67ec JM |
10607 | if (wd != NULL && filename[0] != DIR_SEPARATOR) |
10608 | add_AT_string (die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
10609 | |
10610 | sprintf (producer, "%s %s", language_string, version_string); | |
10611 | ||
10612 | #ifdef MIPS_DEBUGGING_INFO | |
10613 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
10614 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
10615 | not appear in the producer string, the debugger reaches the conclusion | |
10616 | that the object file is stripped and has no debugging information. | |
10617 | To get the MIPS/SGI debugger to believe that there is debugging | |
10618 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
10619 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10620 | strcat (producer, " -g"); | |
a3f97cbb JW |
10621 | #endif |
10622 | ||
a96c67ec | 10623 | add_AT_string (die, DW_AT_producer, producer); |
a9d38797 | 10624 | |
a3f97cbb | 10625 | if (strcmp (language_string, "GNU C++") == 0) |
a96c67ec | 10626 | language = DW_LANG_C_plus_plus; |
a3f97cbb | 10627 | else if (strcmp (language_string, "GNU Ada") == 0) |
a96c67ec | 10628 | language = DW_LANG_Ada83; |
a9d38797 | 10629 | else if (strcmp (language_string, "GNU F77") == 0) |
a96c67ec | 10630 | language = DW_LANG_Fortran77; |
bc28c45b | 10631 | else if (strcmp (language_string, "GNU Pascal") == 0) |
a96c67ec | 10632 | language = DW_LANG_Pascal83; |
28985b81 AG |
10633 | else if (strcmp (language_string, "GNU Java") == 0) |
10634 | language = DW_LANG_Java; | |
a3f97cbb | 10635 | else if (flag_traditional) |
a96c67ec | 10636 | language = DW_LANG_C; |
a3f97cbb | 10637 | else |
a96c67ec | 10638 | language = DW_LANG_C89; |
a9d38797 | 10639 | |
a96c67ec JM |
10640 | add_AT_unsigned (die, DW_AT_language, language); |
10641 | ||
10642 | return die; | |
a3f97cbb JW |
10643 | } |
10644 | ||
10645 | /* Generate a DIE for a string type. */ | |
71dfc51f | 10646 | |
a3f97cbb JW |
10647 | static void |
10648 | gen_string_type_die (type, context_die) | |
10649 | register tree type; | |
10650 | register dw_die_ref context_die; | |
10651 | { | |
71dfc51f RK |
10652 | register dw_die_ref type_die |
10653 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
10654 | ||
bdb669cb | 10655 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
10656 | |
10657 | /* Fudge the string length attribute for now. */ | |
556273e0 | 10658 | |
a3f97cbb | 10659 | /* TODO: add string length info. |
71dfc51f | 10660 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
10661 | bound_representation (upper_bound, 0, 'u'); */ |
10662 | } | |
10663 | ||
61b32c02 | 10664 | /* Generate the DIE for a base class. */ |
71dfc51f | 10665 | |
61b32c02 JM |
10666 | static void |
10667 | gen_inheritance_die (binfo, context_die) | |
10668 | register tree binfo; | |
10669 | register dw_die_ref context_die; | |
10670 | { | |
10671 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 10672 | |
61b32c02 JM |
10673 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
10674 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 10675 | |
61b32c02 JM |
10676 | if (TREE_VIA_VIRTUAL (binfo)) |
10677 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
10678 | if (TREE_VIA_PUBLIC (binfo)) | |
10679 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
10680 | else if (TREE_VIA_PROTECTED (binfo)) | |
10681 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
10682 | } | |
10683 | ||
956d6950 | 10684 | /* Generate a DIE for a class member. */ |
71dfc51f | 10685 | |
a3f97cbb JW |
10686 | static void |
10687 | gen_member_die (type, context_die) | |
10688 | register tree type; | |
10689 | register dw_die_ref context_die; | |
10690 | { | |
61b32c02 | 10691 | register tree member; |
10a11b75 | 10692 | dw_die_ref child; |
71dfc51f | 10693 | |
a3f97cbb JW |
10694 | /* If this is not an incomplete type, output descriptions of each of its |
10695 | members. Note that as we output the DIEs necessary to represent the | |
10696 | members of this record or union type, we will also be trying to output | |
10697 | DIEs to represent the *types* of those members. However the `type' | |
556273e0 KH |
10698 | function (above) will specifically avoid generating type DIEs for member |
10699 | types *within* the list of member DIEs for this (containing) type execpt | |
a3f97cbb JW |
10700 | for those types (of members) which are explicitly marked as also being |
10701 | members of this (containing) type themselves. The g++ front- end can | |
10702 | force any given type to be treated as a member of some other | |
556273e0 | 10703 | (containing) type by setting the TYPE_CONTEXT of the given (member) type |
a3f97cbb JW |
10704 | to point to the TREE node representing the appropriate (containing) |
10705 | type. */ | |
10706 | ||
61b32c02 JM |
10707 | /* First output info about the base classes. */ |
10708 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 10709 | { |
61b32c02 JM |
10710 | register tree bases = TYPE_BINFO_BASETYPES (type); |
10711 | register int n_bases = TREE_VEC_LENGTH (bases); | |
10712 | register int i; | |
10713 | ||
10714 | for (i = 0; i < n_bases; i++) | |
10715 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
10716 | } |
10717 | ||
61b32c02 JM |
10718 | /* Now output info about the data members and type members. */ |
10719 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
10a11b75 JM |
10720 | { |
10721 | /* If we thought we were generating minimal debug info for TYPE | |
10722 | and then changed our minds, some of the member declarations | |
10723 | may have already been defined. Don't define them again, but | |
10724 | do put them in the right order. */ | |
10725 | ||
10726 | child = lookup_decl_die (member); | |
10727 | if (child) | |
10728 | splice_child_die (context_die, child); | |
10729 | else | |
10730 | gen_decl_die (member, context_die); | |
10731 | } | |
61b32c02 | 10732 | |
a3f97cbb | 10733 | /* Now output info about the function members (if any). */ |
61b32c02 | 10734 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
10a11b75 JM |
10735 | { |
10736 | child = lookup_decl_die (member); | |
10737 | if (child) | |
10738 | splice_child_die (context_die, child); | |
10739 | else | |
10740 | gen_decl_die (member, context_die); | |
10741 | } | |
a3f97cbb JW |
10742 | } |
10743 | ||
10a11b75 JM |
10744 | /* Generate a DIE for a structure or union type. If TYPE_DECL_SUPPRESS_DEBUG |
10745 | is set, we pretend that the type was never defined, so we only get the | |
10746 | member DIEs needed by later specification DIEs. */ | |
71dfc51f | 10747 | |
a3f97cbb | 10748 | static void |
273dbe67 | 10749 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 10750 | register tree type; |
a3f97cbb JW |
10751 | register dw_die_ref context_die; |
10752 | { | |
273dbe67 | 10753 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
10754 | register dw_die_ref scope_die = 0; |
10755 | register int nested = 0; | |
10a11b75 | 10756 | int complete = (TYPE_SIZE (type) |
65e1263a JW |
10757 | && (! TYPE_STUB_DECL (type) |
10758 | || ! TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)))); | |
273dbe67 | 10759 | |
10a11b75 | 10760 | if (type_die && ! complete) |
273dbe67 | 10761 | return; |
a082c85a | 10762 | |
71dfc51f | 10763 | if (TYPE_CONTEXT (type) != NULL_TREE |
5f2f160c | 10764 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type))) |
a082c85a JM |
10765 | nested = 1; |
10766 | ||
a94dbf2c | 10767 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
10768 | |
10769 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 10770 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 10771 | { |
273dbe67 | 10772 | register dw_die_ref old_die = type_die; |
71dfc51f | 10773 | |
a3f97cbb JW |
10774 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
10775 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 10776 | scope_die); |
a3f97cbb | 10777 | equate_type_number_to_die (type, type_die); |
273dbe67 JM |
10778 | if (old_die) |
10779 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
5de0e8d4 JM |
10780 | else |
10781 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 10782 | } |
4b674448 | 10783 | else |
273dbe67 | 10784 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb JW |
10785 | |
10786 | /* If this type has been completed, then give it a byte_size attribute and | |
10787 | then give a list of members. */ | |
2081603c | 10788 | if (complete) |
a3f97cbb | 10789 | { |
556273e0 | 10790 | /* Prevent infinite recursion in cases where the type of some member of |
a3f97cbb JW |
10791 | this type is expressed in terms of this type itself. */ |
10792 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 10793 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 10794 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 10795 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 10796 | |
ef76d03b JW |
10797 | /* If the first reference to this type was as the return type of an |
10798 | inline function, then it may not have a parent. Fix this now. */ | |
10799 | if (type_die->die_parent == NULL) | |
10800 | add_child_die (scope_die, type_die); | |
10801 | ||
273dbe67 JM |
10802 | push_decl_scope (type); |
10803 | gen_member_die (type, type_die); | |
10804 | pop_decl_scope (); | |
71dfc51f | 10805 | |
a94dbf2c JM |
10806 | /* GNU extension: Record what type our vtable lives in. */ |
10807 | if (TYPE_VFIELD (type)) | |
10808 | { | |
10809 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 10810 | |
de6e505e JM |
10811 | gen_type_die (vtype, context_die); |
10812 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
10813 | lookup_type_die (vtype)); | |
a94dbf2c | 10814 | } |
a3f97cbb | 10815 | } |
4b674448 | 10816 | else |
8a8c3656 JM |
10817 | { |
10818 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a30d4514 | 10819 | |
9765e357 | 10820 | /* We don't need to do this for function-local types. */ |
f19f17e0 | 10821 | if (! decl_function_context (TYPE_STUB_DECL (type))) |
a30d4514 | 10822 | add_incomplete_type (type); |
8a8c3656 | 10823 | } |
a3f97cbb JW |
10824 | } |
10825 | ||
10826 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 10827 | |
a3f97cbb JW |
10828 | static void |
10829 | gen_subroutine_type_die (type, context_die) | |
10830 | register tree type; | |
10831 | register dw_die_ref context_die; | |
10832 | { | |
10833 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
10834 | register dw_die_ref subr_die |
10835 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
10836 | ||
a3f97cbb JW |
10837 | equate_type_number_to_die (type, subr_die); |
10838 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 10839 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 10840 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
10841 | } |
10842 | ||
10843 | /* Generate a DIE for a type definition */ | |
71dfc51f | 10844 | |
a3f97cbb JW |
10845 | static void |
10846 | gen_typedef_die (decl, context_die) | |
10847 | register tree decl; | |
10848 | register dw_die_ref context_die; | |
10849 | { | |
a3f97cbb | 10850 | register dw_die_ref type_die; |
a94dbf2c JM |
10851 | register tree origin; |
10852 | ||
10853 | if (TREE_ASM_WRITTEN (decl)) | |
10854 | return; | |
10855 | TREE_ASM_WRITTEN (decl) = 1; | |
10856 | ||
777ad4c2 | 10857 | type_die = new_die (DW_TAG_typedef, context_die); |
a94dbf2c | 10858 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 10859 | if (origin != NULL) |
a94dbf2c | 10860 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
10861 | else |
10862 | { | |
a94dbf2c | 10863 | register tree type; |
a3f97cbb | 10864 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
10865 | if (DECL_ORIGINAL_TYPE (decl)) |
10866 | { | |
10867 | type = DECL_ORIGINAL_TYPE (decl); | |
62e3bf54 JM |
10868 | |
10869 | if (type == TREE_TYPE (decl)) | |
10870 | abort (); | |
10871 | else | |
10872 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
a94dbf2c JM |
10873 | } |
10874 | else | |
10875 | type = TREE_TYPE (decl); | |
10876 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
10877 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 10878 | } |
71dfc51f | 10879 | |
a3f97cbb | 10880 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 10881 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
10882 | } |
10883 | ||
10884 | /* Generate a type description DIE. */ | |
71dfc51f | 10885 | |
a3f97cbb JW |
10886 | static void |
10887 | gen_type_die (type, context_die) | |
10888 | register tree type; | |
10889 | register dw_die_ref context_die; | |
10890 | { | |
348bb3c7 JM |
10891 | int need_pop; |
10892 | ||
71dfc51f RK |
10893 | if (type == NULL_TREE || type == error_mark_node) |
10894 | return; | |
a3f97cbb | 10895 | |
38e01259 | 10896 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
10897 | this type (i.e. without any const or volatile qualifiers) so get the |
10898 | main variant (i.e. the unqualified version) of this type now. */ | |
10899 | type = type_main_variant (type); | |
10900 | ||
10901 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 10902 | return; |
a3f97cbb | 10903 | |
a94dbf2c JM |
10904 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
10905 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
556273e0 | 10906 | { |
a94dbf2c JM |
10907 | TREE_ASM_WRITTEN (type) = 1; |
10908 | gen_decl_die (TYPE_NAME (type), context_die); | |
10909 | return; | |
10910 | } | |
10911 | ||
a3f97cbb JW |
10912 | switch (TREE_CODE (type)) |
10913 | { | |
10914 | case ERROR_MARK: | |
10915 | break; | |
10916 | ||
10917 | case POINTER_TYPE: | |
10918 | case REFERENCE_TYPE: | |
956d6950 JL |
10919 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
10920 | ensures that the gen_type_die recursion will terminate even if the | |
10921 | type is recursive. Recursive types are possible in Ada. */ | |
10922 | /* ??? We could perhaps do this for all types before the switch | |
10923 | statement. */ | |
10924 | TREE_ASM_WRITTEN (type) = 1; | |
10925 | ||
a3f97cbb JW |
10926 | /* For these types, all that is required is that we output a DIE (or a |
10927 | set of DIEs) to represent the "basis" type. */ | |
10928 | gen_type_die (TREE_TYPE (type), context_die); | |
10929 | break; | |
10930 | ||
10931 | case OFFSET_TYPE: | |
556273e0 | 10932 | /* This code is used for C++ pointer-to-data-member types. |
71dfc51f | 10933 | Output a description of the relevant class type. */ |
a3f97cbb | 10934 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 10935 | |
a3f97cbb JW |
10936 | /* Output a description of the type of the object pointed to. */ |
10937 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 10938 | |
a3f97cbb JW |
10939 | /* Now output a DIE to represent this pointer-to-data-member type |
10940 | itself. */ | |
10941 | gen_ptr_to_mbr_type_die (type, context_die); | |
10942 | break; | |
10943 | ||
10944 | case SET_TYPE: | |
10945 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
10946 | gen_set_type_die (type, context_die); | |
10947 | break; | |
10948 | ||
10949 | case FILE_TYPE: | |
10950 | gen_type_die (TREE_TYPE (type), context_die); | |
10951 | abort (); /* No way to represent these in Dwarf yet! */ | |
10952 | break; | |
10953 | ||
10954 | case FUNCTION_TYPE: | |
10955 | /* Force out return type (in case it wasn't forced out already). */ | |
10956 | gen_type_die (TREE_TYPE (type), context_die); | |
10957 | gen_subroutine_type_die (type, context_die); | |
10958 | break; | |
10959 | ||
10960 | case METHOD_TYPE: | |
10961 | /* Force out return type (in case it wasn't forced out already). */ | |
10962 | gen_type_die (TREE_TYPE (type), context_die); | |
10963 | gen_subroutine_type_die (type, context_die); | |
10964 | break; | |
10965 | ||
10966 | case ARRAY_TYPE: | |
10967 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
10968 | { | |
10969 | gen_type_die (TREE_TYPE (type), context_die); | |
10970 | gen_string_type_die (type, context_die); | |
10971 | } | |
10972 | else | |
71dfc51f | 10973 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
10974 | break; |
10975 | ||
4061f623 BS |
10976 | case VECTOR_TYPE: |
10977 | gen_type_die (TYPE_DEBUG_REPRESENTATION_TYPE (type), context_die); | |
10978 | break; | |
10979 | ||
a3f97cbb JW |
10980 | case ENUMERAL_TYPE: |
10981 | case RECORD_TYPE: | |
10982 | case UNION_TYPE: | |
10983 | case QUAL_UNION_TYPE: | |
a082c85a | 10984 | /* If this is a nested type whose containing class hasn't been |
348bb3c7 JM |
10985 | written out yet, writing it out will cover this one, too. |
10986 | This does not apply to instantiations of member class templates; | |
10987 | they need to be added to the containing class as they are | |
777ad4c2 | 10988 | generated. FIXME: This hurts the idea of combining type decls |
348bb3c7 JM |
10989 | from multiple TUs, since we can't predict what set of template |
10990 | instantiations we'll get. */ | |
a082c85a | 10991 | if (TYPE_CONTEXT (type) |
5f2f160c | 10992 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a082c85a | 10993 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
a94dbf2c JM |
10994 | { |
10995 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
10996 | ||
348bb3c7 | 10997 | if (TREE_ASM_WRITTEN (type)) |
a94dbf2c JM |
10998 | return; |
10999 | ||
11000 | /* If that failed, attach ourselves to the stub. */ | |
11001 | push_decl_scope (TYPE_CONTEXT (type)); | |
11002 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
348bb3c7 | 11003 | need_pop = 1; |
a94dbf2c | 11004 | } |
348bb3c7 JM |
11005 | else |
11006 | need_pop = 0; | |
a94dbf2c JM |
11007 | |
11008 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 11009 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 11010 | else |
273dbe67 | 11011 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 11012 | |
348bb3c7 | 11013 | if (need_pop) |
a94dbf2c JM |
11014 | pop_decl_scope (); |
11015 | ||
4b674448 | 11016 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
11017 | it up if it is ever completed. gen_*_type_die will set it for us |
11018 | when appropriate. */ | |
11019 | return; | |
a3f97cbb JW |
11020 | |
11021 | case VOID_TYPE: | |
11022 | case INTEGER_TYPE: | |
11023 | case REAL_TYPE: | |
11024 | case COMPLEX_TYPE: | |
11025 | case BOOLEAN_TYPE: | |
11026 | case CHAR_TYPE: | |
11027 | /* No DIEs needed for fundamental types. */ | |
11028 | break; | |
11029 | ||
11030 | case LANG_TYPE: | |
11031 | /* No Dwarf representation currently defined. */ | |
11032 | break; | |
11033 | ||
11034 | default: | |
11035 | abort (); | |
11036 | } | |
11037 | ||
11038 | TREE_ASM_WRITTEN (type) = 1; | |
11039 | } | |
11040 | ||
11041 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 11042 | |
a3f97cbb JW |
11043 | static void |
11044 | gen_tagged_type_instantiation_die (type, context_die) | |
11045 | register tree type; | |
11046 | register dw_die_ref context_die; | |
11047 | { | |
71dfc51f RK |
11048 | if (type == NULL_TREE || type == error_mark_node) |
11049 | return; | |
a3f97cbb | 11050 | |
38e01259 | 11051 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
11052 | this type (i.e. without any const or volatile qualifiers) so make sure |
11053 | that we have the main variant (i.e. the unqualified version) of this | |
11054 | type now. */ | |
bbc6ae08 | 11055 | if (type != type_main_variant (type)) |
3a88cbd1 | 11056 | abort (); |
a3f97cbb | 11057 | |
203588e7 | 11058 | /* Do not check TREE_ASM_WRITTEN (type) as it may not be set if this is |
bbc6ae08 | 11059 | an instance of an unresolved type. */ |
556273e0 | 11060 | |
a3f97cbb JW |
11061 | switch (TREE_CODE (type)) |
11062 | { | |
11063 | case ERROR_MARK: | |
11064 | break; | |
11065 | ||
11066 | case ENUMERAL_TYPE: | |
11067 | gen_inlined_enumeration_type_die (type, context_die); | |
11068 | break; | |
11069 | ||
11070 | case RECORD_TYPE: | |
11071 | gen_inlined_structure_type_die (type, context_die); | |
11072 | break; | |
11073 | ||
11074 | case UNION_TYPE: | |
11075 | case QUAL_UNION_TYPE: | |
11076 | gen_inlined_union_type_die (type, context_die); | |
11077 | break; | |
11078 | ||
11079 | default: | |
71dfc51f | 11080 | abort (); |
a3f97cbb JW |
11081 | } |
11082 | } | |
11083 | ||
11084 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
11085 | things which are local to the given block. */ | |
71dfc51f | 11086 | |
a3f97cbb | 11087 | static void |
d7248bff | 11088 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
11089 | register tree stmt; |
11090 | register dw_die_ref context_die; | |
d7248bff | 11091 | int depth; |
a3f97cbb JW |
11092 | { |
11093 | register int must_output_die = 0; | |
11094 | register tree origin; | |
11095 | register tree decl; | |
11096 | register enum tree_code origin_code; | |
11097 | ||
11098 | /* Ignore blocks never really used to make RTL. */ | |
11099 | ||
1e7f092a JM |
11100 | if (stmt == NULL_TREE || !TREE_USED (stmt) |
11101 | || (!TREE_ASM_WRITTEN (stmt) && !BLOCK_ABSTRACT (stmt))) | |
71dfc51f | 11102 | return; |
a3f97cbb JW |
11103 | |
11104 | /* Determine the "ultimate origin" of this block. This block may be an | |
11105 | inlined instance of an inlined instance of inline function, so we have | |
11106 | to trace all of the way back through the origin chain to find out what | |
11107 | sort of node actually served as the original seed for the creation of | |
11108 | the current block. */ | |
11109 | origin = block_ultimate_origin (stmt); | |
11110 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
11111 | ||
11112 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
11113 | block. */ | |
11114 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
11115 | /* The outer scopes for inlinings *must* always be represented. We |
11116 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
11117 | must_output_die = 1; | |
a3f97cbb JW |
11118 | else |
11119 | { | |
11120 | /* In the case where the current block represents an inlining of the | |
556273e0 | 11121 | "body block" of an inline function, we must *NOT* output any DIE for |
a3f97cbb JW |
11122 | this block because we have already output a DIE to represent the |
11123 | whole inlined function scope and the "body block" of any function | |
11124 | doesn't really represent a different scope according to ANSI C | |
11125 | rules. So we check here to make sure that this block does not | |
11126 | represent a "body block inlining" before trying to set the | |
11127 | `must_output_die' flag. */ | |
d7248bff | 11128 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
11129 | { |
11130 | /* Determine if this block directly contains any "significant" | |
11131 | local declarations which we will need to output DIEs for. */ | |
11132 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
11133 | /* We are not in terse mode so *any* local declaration counts |
11134 | as being a "significant" one. */ | |
11135 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 11136 | else |
71dfc51f RK |
11137 | /* We are in terse mode, so only local (nested) function |
11138 | definitions count as "significant" local declarations. */ | |
11139 | for (decl = BLOCK_VARS (stmt); | |
11140 | decl != NULL; decl = TREE_CHAIN (decl)) | |
11141 | if (TREE_CODE (decl) == FUNCTION_DECL | |
11142 | && DECL_INITIAL (decl)) | |
a3f97cbb | 11143 | { |
71dfc51f RK |
11144 | must_output_die = 1; |
11145 | break; | |
a3f97cbb | 11146 | } |
a3f97cbb JW |
11147 | } |
11148 | } | |
11149 | ||
11150 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
11151 | DIE for any block which contains no significant local declarations at | |
11152 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
11153 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
11154 | that in terse mode, our definition of what constitutes a "significant" | |
11155 | local declaration gets restricted to include only inlined function | |
11156 | instances and local (nested) function definitions. */ | |
11157 | if (must_output_die) | |
11158 | { | |
11159 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 11160 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 11161 | else |
71dfc51f | 11162 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
11163 | } |
11164 | else | |
d7248bff | 11165 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
11166 | } |
11167 | ||
11168 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 11169 | all of its sub-blocks. */ |
71dfc51f | 11170 | |
a3f97cbb | 11171 | static void |
d7248bff | 11172 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
11173 | register tree stmt; |
11174 | register dw_die_ref context_die; | |
d7248bff | 11175 | int depth; |
a3f97cbb JW |
11176 | { |
11177 | register tree decl; | |
11178 | register tree subblocks; | |
71dfc51f | 11179 | |
a3f97cbb | 11180 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
11181 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
11182 | return; | |
11183 | ||
88dad228 JM |
11184 | /* Output the DIEs to represent all of the data objects and typedefs |
11185 | declared directly within this block but not within any nested | |
11186 | sub-blocks. Also, nested function and tag DIEs have been | |
11187 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
11188 | for (decl = BLOCK_VARS (stmt); |
11189 | decl != NULL; decl = TREE_CHAIN (decl)) | |
11190 | { | |
a94dbf2c JM |
11191 | register dw_die_ref die; |
11192 | ||
88dad228 | 11193 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 11194 | die = lookup_decl_die (decl); |
88dad228 | 11195 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
11196 | die = lookup_type_die (TREE_TYPE (decl)); |
11197 | else | |
11198 | die = NULL; | |
11199 | ||
71dfc51f | 11200 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 11201 | add_child_die (context_die, die); |
88dad228 JM |
11202 | else |
11203 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
11204 | } |
11205 | ||
11206 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
11207 | therein) of this block. */ | |
11208 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
11209 | subblocks != NULL; | |
11210 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 11211 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
11212 | } |
11213 | ||
a94dbf2c | 11214 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
11215 | |
11216 | static inline int | |
a94dbf2c JM |
11217 | is_redundant_typedef (decl) |
11218 | register tree decl; | |
11219 | { | |
11220 | if (TYPE_DECL_IS_STUB (decl)) | |
11221 | return 1; | |
71dfc51f | 11222 | |
a94dbf2c JM |
11223 | if (DECL_ARTIFICIAL (decl) |
11224 | && DECL_CONTEXT (decl) | |
11225 | && is_tagged_type (DECL_CONTEXT (decl)) | |
11226 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
11227 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
11228 | /* Also ignore the artificial member typedef for the class name. */ | |
11229 | return 1; | |
71dfc51f | 11230 | |
a94dbf2c JM |
11231 | return 0; |
11232 | } | |
11233 | ||
a3f97cbb | 11234 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 11235 | |
a3f97cbb JW |
11236 | static void |
11237 | gen_decl_die (decl, context_die) | |
11238 | register tree decl; | |
11239 | register dw_die_ref context_die; | |
11240 | { | |
11241 | register tree origin; | |
71dfc51f | 11242 | |
a3f97cbb | 11243 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 11244 | return; |
a3f97cbb | 11245 | |
fcd7f76b JM |
11246 | /* If this ..._DECL node is marked to be ignored, then ignore it. */ |
11247 | if (DECL_IGNORED_P (decl)) | |
71dfc51f | 11248 | return; |
a3f97cbb | 11249 | |
a3f97cbb JW |
11250 | switch (TREE_CODE (decl)) |
11251 | { | |
11252 | case CONST_DECL: | |
556273e0 | 11253 | /* The individual enumerators of an enum type get output when we output |
a3f97cbb JW |
11254 | the Dwarf representation of the relevant enum type itself. */ |
11255 | break; | |
11256 | ||
11257 | case FUNCTION_DECL: | |
4edb7b60 JM |
11258 | /* Don't output any DIEs to represent mere function declarations, |
11259 | unless they are class members or explicit block externs. */ | |
11260 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
777ad4c2 | 11261 | && (current_function_decl == NULL_TREE || DECL_ARTIFICIAL (decl))) |
71dfc51f | 11262 | break; |
bdb669cb | 11263 | |
1cfdcc15 JM |
11264 | /* If we're emitting an out-of-line copy of an inline function, |
11265 | emit info for the abstract instance and set up to refer to it. */ | |
11266 | if (DECL_INLINE (decl) && ! DECL_ABSTRACT (decl) | |
fb41a106 JW |
11267 | && ! class_scope_p (context_die) |
11268 | /* gen_abstract_function won't emit a die if this is just a | |
11269 | declaration. We must avoid setting DECL_ABSTRACT_ORIGIN in | |
11270 | that case, because that works only if we have a die. */ | |
11271 | && DECL_INITIAL (decl) != NULL_TREE) | |
1cfdcc15 JM |
11272 | { |
11273 | gen_abstract_function (decl); | |
11274 | set_decl_origin_self (decl); | |
11275 | } | |
10a11b75 | 11276 | |
4927276d | 11277 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
11278 | { |
11279 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
11280 | have described its return type. */ | |
11281 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
11282 | ||
2081603c JM |
11283 | /* And its virtual context. */ |
11284 | if (DECL_VINDEX (decl) != NULL_TREE) | |
11285 | gen_type_die (DECL_CONTEXT (decl), context_die); | |
11286 | ||
a94dbf2c JM |
11287 | /* And its containing type. */ |
11288 | origin = decl_class_context (decl); | |
71dfc51f | 11289 | if (origin != NULL_TREE) |
10a11b75 | 11290 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 11291 | } |
a3f97cbb JW |
11292 | |
11293 | /* Now output a DIE to represent the function itself. */ | |
11294 | gen_subprogram_die (decl, context_die); | |
11295 | break; | |
11296 | ||
11297 | case TYPE_DECL: | |
11298 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 11299 | actual typedefs. */ |
a3f97cbb | 11300 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 11301 | break; |
a3f97cbb | 11302 | |
556273e0 | 11303 | /* In the special case of a TYPE_DECL node representing the |
5c90448c | 11304 | declaration of some type tag, if the given TYPE_DECL is marked as |
a3f97cbb JW |
11305 | having been instantiated from some other (original) TYPE_DECL node |
11306 | (e.g. one which was generated within the original definition of an | |
11307 | inline function) we have to generate a special (abbreviated) | |
556273e0 | 11308 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 11309 | DIE here. */ |
2081603c | 11310 | if (TYPE_DECL_IS_STUB (decl) && decl_ultimate_origin (decl) != NULL_TREE) |
a3f97cbb JW |
11311 | { |
11312 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
11313 | break; | |
11314 | } | |
a3f97cbb | 11315 | |
a94dbf2c JM |
11316 | if (is_redundant_typedef (decl)) |
11317 | gen_type_die (TREE_TYPE (decl), context_die); | |
11318 | else | |
71dfc51f RK |
11319 | /* Output a DIE to represent the typedef itself. */ |
11320 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
11321 | break; |
11322 | ||
11323 | case LABEL_DECL: | |
11324 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 11325 | gen_label_die (decl, context_die); |
a3f97cbb JW |
11326 | break; |
11327 | ||
11328 | case VAR_DECL: | |
11329 | /* If we are in terse mode, don't generate any DIEs to represent any | |
11330 | variable declarations or definitions. */ | |
11331 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 11332 | break; |
a3f97cbb JW |
11333 | |
11334 | /* Output any DIEs that are needed to specify the type of this data | |
11335 | object. */ | |
11336 | gen_type_die (TREE_TYPE (decl), context_die); | |
11337 | ||
a94dbf2c JM |
11338 | /* And its containing type. */ |
11339 | origin = decl_class_context (decl); | |
71dfc51f | 11340 | if (origin != NULL_TREE) |
10a11b75 | 11341 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 11342 | |
a3f97cbb JW |
11343 | /* Now output the DIE to represent the data object itself. This gets |
11344 | complicated because of the possibility that the VAR_DECL really | |
11345 | represents an inlined instance of a formal parameter for an inline | |
11346 | function. */ | |
11347 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
11348 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
11349 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 11350 | else |
71dfc51f | 11351 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
11352 | break; |
11353 | ||
11354 | case FIELD_DECL: | |
a94dbf2c JM |
11355 | /* Ignore the nameless fields that are used to skip bits, but |
11356 | handle C++ anonymous unions. */ | |
71dfc51f RK |
11357 | if (DECL_NAME (decl) != NULL_TREE |
11358 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
11359 | { |
11360 | gen_type_die (member_declared_type (decl), context_die); | |
11361 | gen_field_die (decl, context_die); | |
11362 | } | |
11363 | break; | |
11364 | ||
11365 | case PARM_DECL: | |
11366 | gen_type_die (TREE_TYPE (decl), context_die); | |
11367 | gen_formal_parameter_die (decl, context_die); | |
11368 | break; | |
11369 | ||
348bb3c7 JM |
11370 | case NAMESPACE_DECL: |
11371 | /* Ignore for now. */ | |
11372 | break; | |
11373 | ||
a3f97cbb JW |
11374 | default: |
11375 | abort (); | |
11376 | } | |
a3f97cbb JW |
11377 | } |
11378 | \f | |
14a774a9 RK |
11379 | /* Add Ada "use" clause information for SGI Workshop debugger. */ |
11380 | ||
11381 | void | |
11382 | dwarf2out_add_library_unit_info (filename, context_list) | |
c6991660 KG |
11383 | const char *filename; |
11384 | const char *context_list; | |
14a774a9 RK |
11385 | { |
11386 | unsigned int file_index; | |
11387 | ||
11388 | if (filename != NULL) | |
11389 | { | |
11390 | dw_die_ref unit_die = new_die (DW_TAG_module, comp_unit_die); | |
556273e0 | 11391 | tree context_list_decl |
14a774a9 RK |
11392 | = build_decl (LABEL_DECL, get_identifier (context_list), |
11393 | void_type_node); | |
11394 | ||
11395 | TREE_PUBLIC (context_list_decl) = TRUE; | |
11396 | add_name_attribute (unit_die, context_list); | |
2e18bbae | 11397 | file_index = lookup_filename (&decl_file_table, filename); |
14a774a9 RK |
11398 | add_AT_unsigned (unit_die, DW_AT_decl_file, file_index); |
11399 | add_pubname (context_list_decl, unit_die); | |
11400 | } | |
11401 | } | |
11402 | ||
71dfc51f RK |
11403 | /* Write the debugging output for DECL. */ |
11404 | ||
a3f97cbb | 11405 | void |
88dad228 | 11406 | dwarf2out_decl (decl) |
a3f97cbb | 11407 | register tree decl; |
a3f97cbb | 11408 | { |
88dad228 JM |
11409 | register dw_die_ref context_die = comp_unit_die; |
11410 | ||
a3f97cbb | 11411 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 11412 | return; |
a3f97cbb | 11413 | |
fcd7f76b | 11414 | /* If this ..._DECL node is marked to be ignored, then ignore it. */ |
a3f97cbb | 11415 | if (DECL_IGNORED_P (decl)) |
fcd7f76b | 11416 | return; |
a3f97cbb JW |
11417 | |
11418 | switch (TREE_CODE (decl)) | |
11419 | { | |
11420 | case FUNCTION_DECL: | |
556273e0 | 11421 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a |
a3f97cbb JW |
11422 | builtin function. Explicit programmer-supplied declarations of |
11423 | these same functions should NOT be ignored however. */ | |
9765e357 | 11424 | if (DECL_EXTERNAL (decl) && DECL_BUILT_IN (decl)) |
b1ccbc24 | 11425 | return; |
a3f97cbb JW |
11426 | |
11427 | /* What we would really like to do here is to filter out all mere | |
11428 | file-scope declarations of file-scope functions which are never | |
11429 | referenced later within this translation unit (and keep all of ones | |
556273e0 KH |
11430 | that *are* referenced later on) but we aren't clairvoyant, so we have |
11431 | no idea which functions will be referenced in the future (i.e. later | |
a3f97cbb | 11432 | on within the current translation unit). So here we just ignore all |
556273e0 | 11433 | file-scope function declarations which are not also definitions. If |
956d6950 | 11434 | and when the debugger needs to know something about these functions, |
556273e0 | 11435 | it will have to hunt around and find the DWARF information associated |
bbc6ae08 | 11436 | with the definition of the function. Note that we can't just check |
a3f97cbb JW |
11437 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent |
11438 | definitions and which ones represent mere declarations. We have to | |
11439 | check `DECL_INITIAL' instead. That's because the C front-end | |
11440 | supports some weird semantics for "extern inline" function | |
11441 | definitions. These can get inlined within the current translation | |
11442 | unit (an thus, we need to generate DWARF info for their abstract | |
11443 | instances so that the DWARF info for the concrete inlined instances | |
556273e0 | 11444 | can have something to refer to) but the compiler never generates any |
a3f97cbb JW |
11445 | out-of-lines instances of such things (despite the fact that they |
11446 | *are* definitions). The important point is that the C front-end | |
11447 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 11448 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb | 11449 | plays some similar games for inline function definitions appearing |
556273e0 | 11450 | within include files which also contain |
a3f97cbb JW |
11451 | `#pragma interface' pragmas. */ |
11452 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 11453 | return; |
88dad228 | 11454 | |
9c6cd30e JM |
11455 | /* If we're a nested function, initially use a parent of NULL; if we're |
11456 | a plain function, this will be fixed up in decls_for_scope. If | |
11457 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 11458 | if (decl_function_context (decl)) |
9c6cd30e | 11459 | context_die = NULL; |
88dad228 | 11460 | |
a3f97cbb JW |
11461 | break; |
11462 | ||
11463 | case VAR_DECL: | |
556273e0 | 11464 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object |
a3f97cbb JW |
11465 | declaration and if the declaration was never even referenced from |
11466 | within this entire compilation unit. We suppress these DIEs in | |
11467 | order to save space in the .debug section (by eliminating entries | |
11468 | which are probably useless). Note that we must not suppress | |
11469 | block-local extern declarations (whether used or not) because that | |
11470 | would screw-up the debugger's name lookup mechanism and cause it to | |
11471 | miss things which really ought to be in scope at a given point. */ | |
11472 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 11473 | return; |
a3f97cbb JW |
11474 | |
11475 | /* If we are in terse mode, don't generate any DIEs to represent any | |
11476 | variable declarations or definitions. */ | |
11477 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 11478 | return; |
a3f97cbb JW |
11479 | break; |
11480 | ||
11481 | case TYPE_DECL: | |
57fb7689 JM |
11482 | /* Don't emit stubs for types unless they are needed by other DIEs. */ |
11483 | if (TYPE_DECL_SUPPRESS_DEBUG (decl)) | |
11484 | return; | |
11485 | ||
a3f97cbb | 11486 | /* Don't bother trying to generate any DIEs to represent any of the |
a9d38797 JM |
11487 | normal built-in types for the language we are compiling. */ |
11488 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
11489 | { |
11490 | /* OK, we need to generate one for `bool' so GDB knows what type | |
11491 | comparisons have. */ | |
11492 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
11493 | == DW_LANG_C_plus_plus) | |
11494 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
11495 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 11496 | |
a94dbf2c JM |
11497 | return; |
11498 | } | |
a3f97cbb | 11499 | |
88dad228 | 11500 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 11501 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 11502 | return; |
88dad228 JM |
11503 | |
11504 | /* If we're a function-scope tag, initially use a parent of NULL; | |
11505 | this will be fixed up in decls_for_scope. */ | |
11506 | if (decl_function_context (decl)) | |
3f76745e | 11507 | context_die = NULL; |
88dad228 | 11508 | |
a3f97cbb JW |
11509 | break; |
11510 | ||
11511 | default: | |
11512 | return; | |
11513 | } | |
11514 | ||
88dad228 | 11515 | gen_decl_die (decl, context_die); |
a3f97cbb JW |
11516 | } |
11517 | ||
11518 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
11519 | a lexical block. */ | |
71dfc51f | 11520 | |
a3f97cbb | 11521 | void |
9a666dda | 11522 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
11523 | register unsigned blocknum; |
11524 | { | |
a3f97cbb | 11525 | function_section (current_function_decl); |
8215347e | 11526 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
11527 | } |
11528 | ||
11529 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
11530 | lexical block. */ | |
71dfc51f | 11531 | |
a3f97cbb | 11532 | void |
9a666dda | 11533 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
11534 | register unsigned blocknum; |
11535 | { | |
a3f97cbb | 11536 | function_section (current_function_decl); |
8215347e | 11537 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
11538 | } |
11539 | ||
64b59a80 JM |
11540 | /* Returns nonzero if it is appropriate not to emit any debugging |
11541 | information for BLOCK, because it doesn't contain any instructions. | |
fcd7f76b | 11542 | |
64b59a80 JM |
11543 | Don't allow this for blocks with nested functions or local classes |
11544 | as we would end up with orphans, and in the presence of scheduling | |
11545 | we may end up calling them anyway. */ | |
11546 | ||
11547 | int | |
fcd7f76b JM |
11548 | dwarf2out_ignore_block (block) |
11549 | tree block; | |
11550 | { | |
11551 | tree decl; | |
11552 | for (decl = BLOCK_VARS (block); decl; decl = TREE_CHAIN (decl)) | |
64b59a80 JM |
11553 | if (TREE_CODE (decl) == FUNCTION_DECL |
11554 | || (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl))) | |
11555 | return 0; | |
11556 | return 1; | |
fcd7f76b JM |
11557 | } |
11558 | ||
a3f97cbb | 11559 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 11560 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
11561 | just a unique number which is associated with only that one filename. |
11562 | We need such numbers for the sake of generating labels | |
11563 | (in the .debug_sfnames section) and references to those | |
11564 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
11565 | If the filename given as an argument is not found in our current list, | |
11566 | add it to the list and assign it the next available unique index number. | |
11567 | In order to speed up searches, we remember the index of the filename | |
11568 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 11569 | |
a3f97cbb | 11570 | static unsigned |
2e18bbae RH |
11571 | lookup_filename (t, file_name) |
11572 | struct file_table *t; | |
d560ee52 | 11573 | const char *file_name; |
a3f97cbb | 11574 | { |
a3f97cbb JW |
11575 | register unsigned i; |
11576 | ||
2e18bbae RH |
11577 | /* Check to see if the file name that was searched on the previous |
11578 | call matches this file name. If so, return the index. */ | |
11579 | if (t->last_lookup_index != 0) | |
11580 | if (strcmp (file_name, t->table[t->last_lookup_index]) == 0) | |
11581 | return t->last_lookup_index; | |
a3f97cbb JW |
11582 | |
11583 | /* Didn't match the previous lookup, search the table */ | |
2e18bbae RH |
11584 | for (i = 1; i < t->in_use; ++i) |
11585 | if (strcmp (file_name, t->table[i]) == 0) | |
71dfc51f | 11586 | { |
2e18bbae | 11587 | t->last_lookup_index = i; |
71dfc51f RK |
11588 | return i; |
11589 | } | |
a3f97cbb | 11590 | |
556273e0 | 11591 | /* Prepare to add a new table entry by making sure there is enough space in |
a3f97cbb | 11592 | the table to do so. If not, expand the current table. */ |
2e18bbae | 11593 | if (i == t->allocated) |
a3f97cbb | 11594 | { |
2e18bbae RH |
11595 | t->allocated = i + FILE_TABLE_INCREMENT; |
11596 | t->table = (char **) | |
11597 | xrealloc (t->table, t->allocated * sizeof (char *)); | |
a3f97cbb JW |
11598 | } |
11599 | ||
71dfc51f | 11600 | /* Add the new entry to the end of the filename table. */ |
2e18bbae RH |
11601 | t->table[i] = xstrdup (file_name); |
11602 | t->in_use = i + 1; | |
11603 | t->last_lookup_index = i; | |
11604 | ||
11605 | return i; | |
11606 | } | |
11607 | ||
11608 | static void | |
11609 | init_file_table (t) | |
11610 | struct file_table *t; | |
11611 | { | |
11612 | /* Allocate the initial hunk of the file_table. */ | |
11613 | t->table = (char **) xcalloc (FILE_TABLE_INCREMENT, sizeof (char *)); | |
11614 | t->allocated = FILE_TABLE_INCREMENT; | |
71dfc51f | 11615 | |
2e18bbae RH |
11616 | /* Skip the first entry - file numbers begin at 1. */ |
11617 | t->in_use = 1; | |
11618 | t->last_lookup_index = 0; | |
a3f97cbb JW |
11619 | } |
11620 | ||
11621 | /* Output a label to mark the beginning of a source code line entry | |
11622 | and record information relating to this source line, in | |
11623 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 11624 | |
a3f97cbb | 11625 | void |
9a666dda | 11626 | dwarf2out_line (filename, line) |
d560ee52 | 11627 | register const char *filename; |
a3f97cbb JW |
11628 | register unsigned line; |
11629 | { | |
a3f97cbb JW |
11630 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
11631 | { | |
11632 | function_section (current_function_decl); | |
a3f97cbb | 11633 | |
b2244e22 JW |
11634 | if (DWARF2_ASM_LINE_DEBUG_INFO) |
11635 | { | |
fc608b03 | 11636 | #if 0 |
2e18bbae | 11637 | unsigned old_in_use = line_file_table.in_use; |
fc608b03 | 11638 | #endif |
2e18bbae | 11639 | unsigned file_num = lookup_filename (&line_file_table, filename); |
b2244e22 JW |
11640 | |
11641 | /* Emit the .file and .loc directives understood by GNU as. */ | |
2e18bbae | 11642 | #if 0 |
0b34cf1e | 11643 | /* ??? As of 2000-11-25, gas has a bug in which it doesn't |
2e18bbae RH |
11644 | actually use the file number argument. It merely remembers |
11645 | the last .file directive emitted. */ | |
11646 | if (file_num >= old_in_use) | |
11647 | fprintf (asm_out_file, "\t.file %d \"%s\"\n", file_num, filename); | |
11648 | fprintf (asm_out_file, "\t.loc %d %d 0\n", file_num, line); | |
11649 | #else | |
0024a804 | 11650 | static unsigned int last_file_num; |
2e18bbae | 11651 | if (file_num != last_file_num) |
b2244e22 | 11652 | { |
2e18bbae | 11653 | last_file_num = file_num; |
b2244e22 | 11654 | fprintf (asm_out_file, "\t.file 0 \"%s\"\n", filename); |
b2244e22 | 11655 | } |
b2244e22 | 11656 | fprintf (asm_out_file, "\t.loc 0 %d 0\n", line); |
2e18bbae | 11657 | #endif |
b2244e22 JW |
11658 | |
11659 | /* Indicate that line number info exists. */ | |
11660 | ++line_info_table_in_use; | |
11661 | ||
11662 | /* Indicate that multiple line number tables exist. */ | |
11663 | if (DECL_SECTION_NAME (current_function_decl)) | |
11664 | ++separate_line_info_table_in_use; | |
11665 | } | |
11666 | else if (DECL_SECTION_NAME (current_function_decl)) | |
a3f97cbb | 11667 | { |
e90b62db | 11668 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
11669 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
11670 | separate_line_info_table_in_use); | |
ac260b05 | 11671 | if (flag_debug_asm) |
00a42e21 JM |
11672 | fprintf (asm_out_file, "\t%s %s:%d", ASM_COMMENT_START, |
11673 | filename, line); | |
e90b62db JM |
11674 | fputc ('\n', asm_out_file); |
11675 | ||
11676 | /* expand the line info table if necessary */ | |
11677 | if (separate_line_info_table_in_use | |
11678 | == separate_line_info_table_allocated) | |
11679 | { | |
11680 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
11681 | separate_line_info_table | |
71dfc51f RK |
11682 | = (dw_separate_line_info_ref) |
11683 | xrealloc (separate_line_info_table, | |
11684 | separate_line_info_table_allocated | |
11685 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 11686 | } |
71dfc51f RK |
11687 | |
11688 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
11689 | line_info |
11690 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
2e18bbae | 11691 | line_info->dw_file_num = lookup_filename (&line_file_table, filename); |
e90b62db JM |
11692 | line_info->dw_line_num = line; |
11693 | line_info->function = current_funcdef_number; | |
11694 | } | |
11695 | else | |
11696 | { | |
11697 | register dw_line_info_ref line_info; | |
71dfc51f | 11698 | |
5c90448c JM |
11699 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
11700 | line_info_table_in_use); | |
ac260b05 | 11701 | if (flag_debug_asm) |
00a42e21 JM |
11702 | fprintf (asm_out_file, "\t%s %s:%d", ASM_COMMENT_START, |
11703 | filename, line); | |
e90b62db JM |
11704 | fputc ('\n', asm_out_file); |
11705 | ||
71dfc51f | 11706 | /* Expand the line info table if necessary. */ |
e90b62db JM |
11707 | if (line_info_table_in_use == line_info_table_allocated) |
11708 | { | |
11709 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
11710 | line_info_table | |
71dfc51f RK |
11711 | = (dw_line_info_ref) |
11712 | xrealloc (line_info_table, | |
11713 | (line_info_table_allocated | |
11714 | * sizeof (dw_line_info_entry))); | |
e90b62db | 11715 | } |
71dfc51f RK |
11716 | |
11717 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db | 11718 | line_info = &line_info_table[line_info_table_in_use++]; |
2e18bbae | 11719 | line_info->dw_file_num = lookup_filename (&line_file_table, filename); |
e90b62db | 11720 | line_info->dw_line_num = line; |
a3f97cbb | 11721 | } |
a3f97cbb JW |
11722 | } |
11723 | } | |
11724 | ||
11725 | /* Record the beginning of a new source file, for later output | |
11726 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 11727 | |
a3f97cbb | 11728 | void |
9a666dda | 11729 | dwarf2out_start_source_file (filename) |
d560ee52 | 11730 | register const char *filename ATTRIBUTE_UNUSED; |
a3f97cbb | 11731 | { |
881c6935 JM |
11732 | if (flag_eliminate_dwarf2_dups) |
11733 | { | |
11734 | /* Record the beginning of the file for break_out_includes. */ | |
11735 | dw_die_ref bincl_die = new_die (DW_TAG_GNU_BINCL, comp_unit_die); | |
11736 | add_AT_string (bincl_die, DW_AT_name, filename); | |
11737 | } | |
a3f97cbb JW |
11738 | } |
11739 | ||
9a666dda | 11740 | /* Record the end of a source file, for later output |
a3f97cbb | 11741 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 11742 | |
a3f97cbb | 11743 | void |
9a666dda | 11744 | dwarf2out_end_source_file () |
a3f97cbb | 11745 | { |
881c6935 JM |
11746 | if (flag_eliminate_dwarf2_dups) |
11747 | { | |
11748 | /* Record the end of the file for break_out_includes. */ | |
11749 | new_die (DW_TAG_GNU_EINCL, comp_unit_die); | |
0b34cf1e | 11750 | } |
a3f97cbb JW |
11751 | } |
11752 | ||
11753 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
11754 | the tail part of the directive line, i.e. the part which is past the | |
11755 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 11756 | |
a3f97cbb | 11757 | void |
9a666dda | 11758 | dwarf2out_define (lineno, buffer) |
2618f955 | 11759 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 11760 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
11761 | { |
11762 | static int initialized = 0; | |
11763 | if (!initialized) | |
11764 | { | |
9a666dda | 11765 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
11766 | initialized = 1; |
11767 | } | |
11768 | } | |
11769 | ||
11770 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
11771 | the tail part of the directive line, i.e. the part which is past the | |
11772 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 11773 | |
a3f97cbb | 11774 | void |
9a666dda | 11775 | dwarf2out_undef (lineno, buffer) |
487a6e06 | 11776 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 11777 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
11778 | { |
11779 | } | |
11780 | ||
11781 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 11782 | |
a3f97cbb | 11783 | void |
9a666dda | 11784 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb | 11785 | register FILE *asm_out_file; |
d3e3972c | 11786 | register const char *main_input_filename; |
a3f97cbb | 11787 | { |
a3f97cbb JW |
11788 | /* Remember the name of the primary input file. */ |
11789 | primary_filename = main_input_filename; | |
11790 | ||
2e18bbae RH |
11791 | init_file_table (&decl_file_table); |
11792 | init_file_table (&line_file_table); | |
a3f97cbb | 11793 | |
a3f97cbb JW |
11794 | /* Allocate the initial hunk of the decl_die_table. */ |
11795 | decl_die_table | |
3de90026 | 11796 | = (dw_die_ref *) xcalloc (DECL_DIE_TABLE_INCREMENT, sizeof (dw_die_ref)); |
a3f97cbb JW |
11797 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
11798 | decl_die_table_in_use = 0; | |
11799 | ||
11800 | /* Allocate the initial hunk of the decl_scope_table. */ | |
11801 | decl_scope_table | |
777ad4c2 | 11802 | = (tree *) xcalloc (DECL_SCOPE_TABLE_INCREMENT, sizeof (tree)); |
a3f97cbb JW |
11803 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
11804 | decl_scope_depth = 0; | |
11805 | ||
11806 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
11807 | abbrev_die_table | |
3de90026 RH |
11808 | = (dw_die_ref *) xcalloc (ABBREV_DIE_TABLE_INCREMENT, |
11809 | sizeof (dw_die_ref)); | |
a3f97cbb | 11810 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 11811 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
11812 | abbrev_die_table_in_use = 1; |
11813 | ||
11814 | /* Allocate the initial hunk of the line_info_table. */ | |
11815 | line_info_table | |
3de90026 RH |
11816 | = (dw_line_info_ref) xcalloc (LINE_INFO_TABLE_INCREMENT, |
11817 | sizeof (dw_line_info_entry)); | |
a3f97cbb | 11818 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 11819 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
11820 | line_info_table_in_use = 1; |
11821 | ||
556273e0 | 11822 | /* Generate the initial DIE for the .debug section. Note that the (string) |
a3f97cbb | 11823 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE |
556273e0 | 11824 | will (typically) be a relative pathname and that this pathname should be |
a3f97cbb JW |
11825 | taken as being relative to the directory from which the compiler was |
11826 | invoked when the given (base) source file was compiled. */ | |
a96c67ec | 11827 | comp_unit_die = gen_compile_unit_die (main_input_filename); |
a3f97cbb | 11828 | |
1f8f4a0b MM |
11829 | VARRAY_RTX_INIT (used_rtx_varray, 32, "used_rtx_varray"); |
11830 | ggc_add_rtx_varray_root (&used_rtx_varray, 1); | |
1865dbb5 | 11831 | |
5c90448c | 11832 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
8b790721 | 11833 | ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label, ABBREV_SECTION_LABEL, 0); |
b366352b MM |
11834 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
11835 | ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0); | |
11836 | else | |
11837 | strcpy (text_section_label, stripattributes (TEXT_SECTION)); | |
556273e0 | 11838 | ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label, |
8b790721 | 11839 | DEBUG_INFO_SECTION_LABEL, 0); |
556273e0 | 11840 | ASM_GENERATE_INTERNAL_LABEL (debug_line_section_label, |
8b790721 JM |
11841 | DEBUG_LINE_SECTION_LABEL, 0); |
11842 | ||
11843 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
11844 | ASM_OUTPUT_LABEL (asm_out_file, abbrev_section_label); | |
b366352b | 11845 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
a96c67ec JM |
11846 | { |
11847 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
11848 | ASM_OUTPUT_LABEL (asm_out_file, text_section_label); | |
11849 | } | |
8b790721 JM |
11850 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
11851 | ASM_OUTPUT_LABEL (asm_out_file, debug_info_section_label); | |
11852 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
11853 | ASM_OUTPUT_LABEL (asm_out_file, debug_line_section_label); | |
a3f97cbb JW |
11854 | } |
11855 | ||
11856 | /* Output stuff that dwarf requires at the end of every file, | |
11857 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 11858 | |
a3f97cbb | 11859 | void |
9a666dda | 11860 | dwarf2out_finish () |
a3f97cbb | 11861 | { |
ef76d03b JW |
11862 | limbo_die_node *node, *next_node; |
11863 | dw_die_ref die; | |
ef76d03b JW |
11864 | |
11865 | /* Traverse the limbo die list, and add parent/child links. The only | |
11866 | dies without parents that should be here are concrete instances of | |
11867 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
11868 | For concrete instances, we can get the parent die from the abstract | |
11869 | instance. */ | |
11870 | for (node = limbo_die_list; node; node = next_node) | |
11871 | { | |
11872 | next_node = node->next; | |
11873 | die = node->die; | |
11874 | ||
11875 | if (die->die_parent == NULL) | |
11876 | { | |
a96c67ec JM |
11877 | dw_die_ref origin = get_AT_ref (die, DW_AT_abstract_origin); |
11878 | if (origin) | |
11879 | add_child_die (origin->die_parent, die); | |
ef76d03b | 11880 | else if (die == comp_unit_die) |
a96c67ec | 11881 | ; |
ef76d03b JW |
11882 | else |
11883 | abort (); | |
11884 | } | |
11885 | free (node); | |
11886 | } | |
a96c67ec | 11887 | limbo_die_list = NULL; |
ef76d03b | 11888 | |
8a8c3656 JM |
11889 | /* Walk through the list of incomplete types again, trying once more to |
11890 | emit full debugging info for them. */ | |
11891 | retry_incomplete_types (); | |
11892 | ||
881c6935 JM |
11893 | /* We need to reverse all the dies before break_out_includes, or |
11894 | we'll see the end of an include file before the beginning. */ | |
11895 | reverse_all_dies (comp_unit_die); | |
11896 | ||
11897 | /* Generate separate CUs for each of the include files we've seen. | |
11898 | They will go into limbo_die_list. */ | |
5f632b5e JM |
11899 | if (flag_eliminate_dwarf2_dups) |
11900 | break_out_includes (comp_unit_die); | |
881c6935 JM |
11901 | |
11902 | /* Traverse the DIE's and add add sibling attributes to those DIE's | |
11903 | that have children. */ | |
a3f97cbb | 11904 | add_sibling_attributes (comp_unit_die); |
881c6935 JM |
11905 | for (node = limbo_die_list; node; node = node->next) |
11906 | add_sibling_attributes (node->die); | |
a3f97cbb JW |
11907 | |
11908 | /* Output a terminator label for the .text section. */ | |
11909 | fputc ('\n', asm_out_file); | |
11910 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 11911 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 11912 | |
bdb669cb | 11913 | #if 0 |
a3f97cbb JW |
11914 | /* Output a terminator label for the .data section. */ |
11915 | fputc ('\n', asm_out_file); | |
11916 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 11917 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
11918 | |
11919 | /* Output a terminator label for the .bss section. */ | |
11920 | fputc ('\n', asm_out_file); | |
11921 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 11922 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 11923 | #endif |
a3f97cbb | 11924 | |
e90b62db JM |
11925 | /* Output the source line correspondence table. */ |
11926 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
11927 | { | |
b2244e22 JW |
11928 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
11929 | { | |
11930 | fputc ('\n', asm_out_file); | |
11931 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
11932 | output_line_info (); | |
11933 | } | |
e90b62db JM |
11934 | |
11935 | /* We can only use the low/high_pc attributes if all of the code | |
11936 | was in .text. */ | |
11937 | if (separate_line_info_table_in_use == 0) | |
11938 | { | |
8b790721 | 11939 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label); |
5c90448c | 11940 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 11941 | } |
71dfc51f | 11942 | |
8b790721 JM |
11943 | add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list, |
11944 | debug_line_section_label); | |
e90b62db JM |
11945 | } |
11946 | ||
a96c67ec JM |
11947 | #if 0 /* unimplemented */ |
11948 | if (debug_info_level >= DINFO_LEVEL_VERBOSE && primary) | |
11949 | add_AT_unsigned (die, DW_AT_macro_info, 0); | |
11950 | #endif | |
11951 | ||
881c6935 JM |
11952 | /* Output all of the compilation units. We put the main one last so that |
11953 | the offsets are available to output_pubnames. */ | |
11954 | for (node = limbo_die_list; node; node = node->next) | |
11955 | output_comp_unit (node->die); | |
11956 | output_comp_unit (comp_unit_die); | |
11957 | ||
a3f97cbb JW |
11958 | /* Output the abbreviation table. */ |
11959 | fputc ('\n', asm_out_file); | |
11960 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
a3f97cbb JW |
11961 | output_abbrev_section (); |
11962 | ||
d291dd49 JM |
11963 | if (pubname_table_in_use) |
11964 | { | |
11965 | /* Output public names table. */ | |
11966 | fputc ('\n', asm_out_file); | |
11967 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
11968 | output_pubnames (); | |
11969 | } | |
11970 | ||
e689ae67 JM |
11971 | /* We only put functions in the arange table, so don't write it out if |
11972 | we don't have any. */ | |
a3f97cbb JW |
11973 | if (fde_table_in_use) |
11974 | { | |
a3f97cbb JW |
11975 | /* Output the address range information. */ |
11976 | fputc ('\n', asm_out_file); | |
11977 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
11978 | output_aranges (); | |
11979 | } | |
11980 | } | |
9a666dda | 11981 | #endif /* DWARF2_DEBUGGING_INFO */ |