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00fe048c | 1 | /* Output dbx-format symbol table information from GNU compiler. |
23a5b65a | 2 | Copyright (C) 1987-2014 Free Software Foundation, Inc. |
00fe048c | 3 | |
1322177d | 4 | This file is part of GCC. |
00fe048c | 5 | |
1322177d LB |
6 | GCC is free software; you can redistribute it and/or modify it under |
7 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 9 | version. |
00fe048c | 10 | |
1322177d LB |
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
00fe048c RS |
15 | |
16 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
00fe048c RS |
19 | |
20 | ||
21 | /* Output dbx-format symbol table data. | |
22 | This consists of many symbol table entries, each of them | |
23 | a .stabs assembler pseudo-op with four operands: | |
24 | a "name" which is really a description of one symbol and its type, | |
25 | a "code", which is a symbol defined in stab.h whose name starts with N_, | |
26 | an unused operand always 0, | |
27 | and a "value" which is an address or an offset. | |
28 | The name is enclosed in doublequote characters. | |
29 | ||
30 | Each function, variable, typedef, and structure tag | |
31 | has a symbol table entry to define it. | |
32 | The beginning and end of each level of name scoping within | |
33 | a function are also marked by special symbol table entries. | |
34 | ||
35 | The "name" consists of the symbol name, a colon, a kind-of-symbol letter, | |
36 | and a data type number. The data type number may be followed by | |
37 | "=" and a type definition; normally this will happen the first time | |
38 | the type number is mentioned. The type definition may refer to | |
39 | other types by number, and those type numbers may be followed | |
40 | by "=" and nested definitions. | |
41 | ||
42 | This can make the "name" quite long. | |
43 | When a name is more than 80 characters, we split the .stabs pseudo-op | |
44 | into two .stabs pseudo-ops, both sharing the same "code" and "value". | |
45 | The first one is marked as continued with a double-backslash at the | |
46 | end of its "name". | |
47 | ||
48 | The kind-of-symbol letter distinguished function names from global | |
49 | variables from file-scope variables from parameters from auto | |
50 | variables in memory from typedef names from register variables. | |
51 | See `dbxout_symbol'. | |
52 | ||
53 | The "code" is mostly redundant with the kind-of-symbol letter | |
54 | that goes in the "name", but not entirely: for symbols located | |
55 | in static storage, the "code" says which segment the address is in, | |
56 | which controls how it is relocated. | |
57 | ||
58 | The "value" for a symbol in static storage | |
59 | is the core address of the symbol (actually, the assembler | |
60 | label for the symbol). For a symbol located in a stack slot | |
61 | it is the stack offset; for one in a register, the register number. | |
62 | For a typedef symbol, it is zero. | |
63 | ||
64 | If DEBUG_SYMS_TEXT is defined, all debugging symbols must be | |
65 | output while in the text section. | |
66 | ||
67 | For more on data type definitions, see `dbxout_type'. */ | |
68 | ||
e9a25f70 | 69 | #include "config.h" |
670ee920 | 70 | #include "system.h" |
4977bab6 ZW |
71 | #include "coretypes.h" |
72 | #include "tm.h" | |
ccd043a9 | 73 | |
00fe048c | 74 | #include "tree.h" |
d8a2d370 DN |
75 | #include "varasm.h" |
76 | #include "stor-layout.h" | |
00fe048c RS |
77 | #include "rtl.h" |
78 | #include "flags.h" | |
79 | #include "regs.h" | |
80 | #include "insn-config.h" | |
81 | #include "reload.h" | |
3e487b21 | 82 | #include "output.h" |
76ead72b | 83 | #include "dbxout.h" |
718f9c0f | 84 | #include "diagnostic-core.h" |
487a6e06 | 85 | #include "toplev.h" |
aa388f29 | 86 | #include "tm_p.h" |
951a525f | 87 | #include "ggc.h" |
a51d908e | 88 | #include "debug.h" |
c3fb23f4 | 89 | #include "function.h" |
7c262518 | 90 | #include "target.h" |
677f3fa8 | 91 | #include "common/common-target.h" |
3ac88239 | 92 | #include "langhooks.h" |
93a27b7b | 93 | #include "obstack.h" |
9bfa80fb | 94 | #include "expr.h" |
9166988f | 95 | #include "cgraph.h" |
00fe048c | 96 | |
b372168c | 97 | #ifdef XCOFF_DEBUGGING_INFO |
95f2ba07 | 98 | #include "xcoffout.h" |
b372168c MM |
99 | #endif |
100 | ||
00fe048c | 101 | #ifndef ASM_STABS_OP |
93a27b7b ZW |
102 | # ifdef XCOFF_DEBUGGING_INFO |
103 | # define ASM_STABS_OP "\t.stabx\t" | |
104 | # else | |
105 | # define ASM_STABS_OP "\t.stabs\t" | |
106 | # endif | |
00fe048c RS |
107 | #endif |
108 | ||
109 | #ifndef ASM_STABN_OP | |
0a3e1f45 | 110 | #define ASM_STABN_OP "\t.stabn\t" |
00fe048c RS |
111 | #endif |
112 | ||
93a27b7b ZW |
113 | #ifndef ASM_STABD_OP |
114 | #define ASM_STABD_OP "\t.stabd\t" | |
115 | #endif | |
116 | ||
01e2750c RS |
117 | #ifndef DBX_TYPE_DECL_STABS_CODE |
118 | #define DBX_TYPE_DECL_STABS_CODE N_LSYM | |
b372168c MM |
119 | #endif |
120 | ||
121 | #ifndef DBX_STATIC_CONST_VAR_CODE | |
122 | #define DBX_STATIC_CONST_VAR_CODE N_FUN | |
123 | #endif | |
124 | ||
125 | #ifndef DBX_REGPARM_STABS_CODE | |
126 | #define DBX_REGPARM_STABS_CODE N_RSYM | |
127 | #endif | |
128 | ||
129 | #ifndef DBX_REGPARM_STABS_LETTER | |
130 | #define DBX_REGPARM_STABS_LETTER 'P' | |
131 | #endif | |
132 | ||
8768c655 RH |
133 | #ifndef NO_DBX_FUNCTION_END |
134 | #define NO_DBX_FUNCTION_END 0 | |
135 | #endif | |
136 | ||
5d865dac EB |
137 | #ifndef NO_DBX_BNSYM_ENSYM |
138 | #define NO_DBX_BNSYM_ENSYM 0 | |
139 | #endif | |
140 | ||
93a27b7b ZW |
141 | #ifndef NO_DBX_MAIN_SOURCE_DIRECTORY |
142 | #define NO_DBX_MAIN_SOURCE_DIRECTORY 0 | |
143 | #endif | |
144 | ||
3e487b21 ZW |
145 | #ifndef DBX_BLOCKS_FUNCTION_RELATIVE |
146 | #define DBX_BLOCKS_FUNCTION_RELATIVE 0 | |
147 | #endif | |
148 | ||
149 | #ifndef DBX_LINES_FUNCTION_RELATIVE | |
150 | #define DBX_LINES_FUNCTION_RELATIVE 0 | |
151 | #endif | |
152 | ||
93a27b7b ZW |
153 | #ifndef DBX_CONTIN_LENGTH |
154 | #define DBX_CONTIN_LENGTH 80 | |
155 | #endif | |
156 | ||
157 | #ifndef DBX_CONTIN_CHAR | |
158 | #define DBX_CONTIN_CHAR '\\' | |
159 | #endif | |
160 | ||
00fe048c RS |
161 | enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED}; |
162 | ||
4bcaafd9 ILT |
163 | /* Structure recording information about a C data type. |
164 | The status element says whether we have yet output | |
165 | the definition of the type. TYPE_XREF says we have | |
166 | output it as a cross-reference only. | |
167 | The file_number and type_number elements are used if DBX_USE_BINCL | |
168 | is defined. */ | |
169 | ||
d1b38208 | 170 | struct GTY(()) typeinfo { |
4bcaafd9 | 171 | enum typestatus status; |
4bcaafd9 ILT |
172 | int file_number; |
173 | int type_number; | |
4bcaafd9 ILT |
174 | }; |
175 | ||
176 | /* Vector recording information about C data types. | |
00fe048c RS |
177 | When we first notice a data type (a tree node), |
178 | we assign it a number using next_type_number. | |
4bcaafd9 | 179 | That is its index in this vector. */ |
00fe048c | 180 | |
17211ab5 | 181 | static GTY ((length ("typevec_len"))) struct typeinfo *typevec; |
00fe048c RS |
182 | |
183 | /* Number of elements of space allocated in `typevec'. */ | |
184 | ||
17211ab5 | 185 | static GTY(()) int typevec_len; |
00fe048c RS |
186 | |
187 | /* In dbx output, each type gets a unique number. | |
188 | This is the number for the next type output. | |
189 | The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */ | |
190 | ||
17211ab5 | 191 | static GTY(()) int next_type_number; |
4bcaafd9 | 192 | |
21d13d83 ZW |
193 | /* The C front end may call dbxout_symbol before dbxout_init runs. |
194 | We save all such decls in this list and output them when we get | |
195 | to dbxout_init. */ | |
196 | ||
197 | static GTY(()) tree preinit_symbols; | |
198 | ||
33e9d2aa DP |
199 | enum binclstatus {BINCL_NOT_REQUIRED, BINCL_PENDING, BINCL_PROCESSED}; |
200 | ||
4bcaafd9 ILT |
201 | /* When using N_BINCL in dbx output, each type number is actually a |
202 | pair of the file number and the type number within the file. | |
203 | This is a stack of input files. */ | |
204 | ||
047c6eac | 205 | struct dbx_file |
4bcaafd9 ILT |
206 | { |
207 | struct dbx_file *next; | |
208 | int file_number; | |
209 | int next_type_number; | |
047c6eac GK |
210 | enum binclstatus bincl_status; /* Keep track of lazy bincl. */ |
211 | const char *pending_bincl_name; /* Name of bincl. */ | |
212 | struct dbx_file *prev; /* Chain to traverse all pending bincls. */ | |
4bcaafd9 ILT |
213 | }; |
214 | ||
b8698a0f L |
215 | /* This is the top of the stack. |
216 | ||
047c6eac GK |
217 | This is not saved for PCH, because restoring a PCH should not change it. |
218 | next_file_number does have to be saved, because the PCH may use some | |
219 | file numbers; however, just before restoring a PCH, next_file_number | |
220 | should always be 0 because we should not have needed any file numbers | |
221 | yet. */ | |
4bcaafd9 | 222 | |
e139ff5b AS |
223 | #if (defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)) \ |
224 | && defined (DBX_USE_BINCL) | |
047c6eac | 225 | static struct dbx_file *current_file; |
a37336cf | 226 | #endif |
4bcaafd9 ILT |
227 | |
228 | /* This is the next file number to use. */ | |
229 | ||
17211ab5 GK |
230 | static GTY(()) int next_file_number; |
231 | ||
33b49800 | 232 | /* A counter for dbxout_function_end. */ |
c1b50e49 | 233 | |
33b49800 | 234 | static GTY(()) int scope_labelno; |
c1b50e49 | 235 | |
a8d0467e EB |
236 | /* A counter for dbxout_source_line. */ |
237 | ||
238 | static GTY(()) int dbxout_source_line_counter; | |
239 | ||
17211ab5 GK |
240 | /* Number for the next N_SOL filename stabs label. The number 0 is reserved |
241 | for the N_SO filename stabs label. */ | |
242 | ||
33b49800 GK |
243 | static GTY(()) int source_label_number = 1; |
244 | ||
245 | /* Last source file name mentioned in a NOTE insn. */ | |
246 | ||
247 | static GTY(()) const char *lastfile; | |
248 | ||
249 | /* Used by PCH machinery to detect if 'lastfile' should be reset to | |
250 | base_input_file. */ | |
251 | static GTY(()) int lastfile_is_base; | |
252 | ||
253 | /* Typical USG systems don't have stab.h, and they also have | |
254 | no use for DBX-format debugging info. */ | |
255 | ||
256 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) | |
257 | ||
8837d828 AS |
258 | #ifdef DBX_USE_BINCL |
259 | /* If zero then there is no pending BINCL. */ | |
260 | static int pending_bincls = 0; | |
261 | #endif | |
262 | ||
33b49800 GK |
263 | /* The original input file name. */ |
264 | static const char *base_input_file; | |
265 | ||
17211ab5 | 266 | #ifdef DEBUG_SYMS_TEXT |
d6b5193b | 267 | #define FORCE_TEXT switch_to_section (current_function_section ()) |
17211ab5 GK |
268 | #else |
269 | #define FORCE_TEXT | |
270 | #endif | |
271 | ||
272 | #include "gstab.h" | |
273 | ||
17211ab5 GK |
274 | /* 1 if PARM is passed to this function in memory. */ |
275 | ||
276 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
3c0cb5de | 277 | (MEM_P (DECL_INCOMING_RTL (PARM))) |
4bcaafd9 | 278 | |
17211ab5 GK |
279 | /* A C expression for the integer offset value of an automatic variable |
280 | (N_LSYM) having address X (an RTX). */ | |
281 | #ifndef DEBUGGER_AUTO_OFFSET | |
282 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
283 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
284 | #endif | |
285 | ||
286 | /* A C expression for the integer offset value of an argument (N_PSYM) | |
3d07b7cd LCW |
287 | having address X (an RTX). The nominal offset is OFFSET. |
288 | Note that we use OFFSET + 0 here to avoid the self-assign warning | |
289 | when the macro is called in a context like | |
290 | number = DEBUGGER_ARG_OFFSET(number, X) */ | |
17211ab5 | 291 | #ifndef DEBUGGER_ARG_OFFSET |
3d07b7cd | 292 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET + 0) |
17211ab5 GK |
293 | #endif |
294 | ||
93a27b7b ZW |
295 | /* This obstack holds the stab string currently being constructed. We |
296 | build it up here, then write it out, so we can split long lines up | |
297 | properly (see dbxout_finish_complex_stabs). */ | |
298 | static struct obstack stabstr_ob; | |
299 | static size_t stabstr_last_contin_point; | |
00fe048c | 300 | |
5ec3a5a7 | 301 | #ifdef DBX_USE_BINCL |
33e9d2aa DP |
302 | static void emit_bincl_stab (const char *c); |
303 | static void emit_pending_bincls (void); | |
f23b9d52 | 304 | #endif |
33e9d2aa DP |
305 | static inline void emit_pending_bincls_if_required (void); |
306 | ||
7080f735 | 307 | static void dbxout_init (const char *); |
b8698a0f | 308 | |
7080f735 AJ |
309 | static void dbxout_finish (const char *); |
310 | static void dbxout_start_source_file (unsigned, const char *); | |
311 | static void dbxout_end_source_file (unsigned); | |
312 | static void dbxout_typedefs (tree); | |
7080f735 | 313 | static void dbxout_type_index (tree); |
7080f735 AJ |
314 | static void dbxout_args (tree); |
315 | static void dbxout_type_fields (tree); | |
93a27b7b | 316 | static void dbxout_type_method_1 (tree); |
7080f735 | 317 | static void dbxout_type_methods (tree); |
84fb43a1 | 318 | static void dbxout_range_type (tree, tree, tree); |
7080f735 | 319 | static void dbxout_type (tree, int); |
84fb43a1 | 320 | static bool print_int_cst_bounds_in_octal_p (tree, tree, tree); |
7151ffbe | 321 | static bool is_fortran (void); |
7080f735 AJ |
322 | static void dbxout_type_name (tree); |
323 | static void dbxout_class_name_qualifiers (tree); | |
324 | static int dbxout_symbol_location (tree, tree, const char *, rtx); | |
325 | static void dbxout_symbol_name (tree, const char *, int); | |
dbb6088f | 326 | static void dbxout_common_name (tree, const char *, stab_code_type); |
7151ffbe | 327 | static const char *dbxout_common_check (tree, int *); |
9de41e57 | 328 | static void dbxout_global_decl (tree); |
8507c40a | 329 | static void dbxout_type_decl (tree, int); |
7080f735 | 330 | static void dbxout_handle_pch (unsigned); |
1ed13f83 | 331 | static void debug_free_queue (void); |
00fe048c | 332 | \f |
7f905405 | 333 | /* The debug hooks structure. */ |
a5a42b92 NB |
334 | #if defined (DBX_DEBUGGING_INFO) |
335 | ||
ed5ef2e4 | 336 | static void dbxout_source_line (unsigned int, const char *, int, bool); |
8fa5469d | 337 | static void dbxout_begin_prologue (unsigned int, const char *); |
93a27b7b | 338 | static void dbxout_source_file (const char *); |
847d0c08 | 339 | static void dbxout_function_end (tree); |
7080f735 AJ |
340 | static void dbxout_begin_function (tree); |
341 | static void dbxout_begin_block (unsigned, unsigned); | |
342 | static void dbxout_end_block (unsigned, unsigned); | |
343 | static void dbxout_function_decl (tree); | |
a5a42b92 | 344 | |
54b6670a | 345 | const struct gcc_debug_hooks dbx_debug_hooks = |
a51d908e NB |
346 | { |
347 | dbxout_init, | |
7f905405 | 348 | dbxout_finish, |
3df9609a | 349 | debug_nothing_void, |
7f905405 NB |
350 | debug_nothing_int_charstar, |
351 | debug_nothing_int_charstar, | |
352 | dbxout_start_source_file, | |
a5a42b92 NB |
353 | dbxout_end_source_file, |
354 | dbxout_begin_block, | |
e2a12aca | 355 | dbxout_end_block, |
9678086d | 356 | debug_true_const_tree, /* ignore_block */ |
6097b0c3 | 357 | dbxout_source_line, /* source_line */ |
8fa5469d | 358 | dbxout_begin_prologue, /* begin_prologue */ |
6097b0c3 | 359 | debug_nothing_int_charstar, /* end_prologue */ |
67ad2ae7 | 360 | debug_nothing_int_charstar, /* begin_epilogue */ |
6097b0c3 | 361 | debug_nothing_int_charstar, /* end_epilogue */ |
653e276c NB |
362 | #ifdef DBX_FUNCTION_FIRST |
363 | dbxout_begin_function, | |
364 | #else | |
6097b0c3 | 365 | debug_nothing_tree, /* begin_function */ |
653e276c | 366 | #endif |
6097b0c3 | 367 | debug_nothing_int, /* end_function */ |
2b85879e | 368 | dbxout_function_decl, |
6097b0c3 | 369 | dbxout_global_decl, /* global_decl */ |
21d13d83 | 370 | dbxout_type_decl, /* type_decl */ |
a64f5186 | 371 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
6097b0c3 DP |
372 | debug_nothing_tree, /* deferred_inline_function */ |
373 | debug_nothing_tree, /* outlining_inline_function */ | |
f630fc6a | 374 | debug_nothing_rtx_code_label, /* label */ |
014a1138 | 375 | dbxout_handle_pch, /* handle_pch */ |
f630fc6a | 376 | debug_nothing_rtx_insn, /* var_location */ |
87c8b4be | 377 | debug_nothing_void, /* switch_text_section */ |
a417cdd9 | 378 | debug_nothing_tree_tree, /* set_name */ |
c6a13190 ILT |
379 | 0, /* start_end_main_source_file */ |
380 | TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */ | |
a51d908e | 381 | }; |
a5a42b92 NB |
382 | #endif /* DBX_DEBUGGING_INFO */ |
383 | ||
384 | #if defined (XCOFF_DEBUGGING_INFO) | |
54b6670a | 385 | const struct gcc_debug_hooks xcoff_debug_hooks = |
a5a42b92 NB |
386 | { |
387 | dbxout_init, | |
388 | dbxout_finish, | |
3df9609a | 389 | debug_nothing_void, |
a5a42b92 NB |
390 | debug_nothing_int_charstar, |
391 | debug_nothing_int_charstar, | |
392 | dbxout_start_source_file, | |
393 | dbxout_end_source_file, | |
394 | xcoffout_begin_block, | |
e2a12aca | 395 | xcoffout_end_block, |
9678086d | 396 | debug_true_const_tree, /* ignore_block */ |
e2a12aca | 397 | xcoffout_source_line, |
6097b0c3 DP |
398 | xcoffout_begin_prologue, /* begin_prologue */ |
399 | debug_nothing_int_charstar, /* end_prologue */ | |
67ad2ae7 | 400 | debug_nothing_int_charstar, /* begin_epilogue */ |
e2a12aca | 401 | xcoffout_end_epilogue, |
6097b0c3 | 402 | debug_nothing_tree, /* begin_function */ |
2b85879e | 403 | xcoffout_end_function, |
6097b0c3 DP |
404 | debug_nothing_tree, /* function_decl */ |
405 | dbxout_global_decl, /* global_decl */ | |
21d13d83 | 406 | dbxout_type_decl, /* type_decl */ |
a64f5186 | 407 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
6097b0c3 DP |
408 | debug_nothing_tree, /* deferred_inline_function */ |
409 | debug_nothing_tree, /* outlining_inline_function */ | |
f630fc6a | 410 | debug_nothing_rtx_code_label, /* label */ |
014a1138 | 411 | dbxout_handle_pch, /* handle_pch */ |
f630fc6a | 412 | debug_nothing_rtx_insn, /* var_location */ |
87c8b4be | 413 | debug_nothing_void, /* switch_text_section */ |
58298177 | 414 | debug_nothing_tree_tree, /* set_name */ |
c6a13190 ILT |
415 | 0, /* start_end_main_source_file */ |
416 | TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */ | |
a5a42b92 NB |
417 | }; |
418 | #endif /* XCOFF_DEBUGGING_INFO */ | |
a51d908e | 419 | \f |
93a27b7b ZW |
420 | /* Numeric formatting helper macro. Note that this does not handle |
421 | hexadecimal. */ | |
422 | #define NUMBER_FMT_LOOP(P, NUM, BASE) \ | |
423 | do \ | |
424 | { \ | |
425 | int digit = NUM % BASE; \ | |
426 | NUM /= BASE; \ | |
427 | *--P = digit + '0'; \ | |
428 | } \ | |
429 | while (NUM > 0) | |
430 | ||
431 | /* Utility: write a decimal integer NUM to asm_out_file. */ | |
432 | void | |
433 | dbxout_int (int num) | |
434 | { | |
435 | char buf[64]; | |
436 | char *p = buf + sizeof buf; | |
437 | unsigned int unum; | |
438 | ||
439 | if (num == 0) | |
440 | { | |
441 | putc ('0', asm_out_file); | |
442 | return; | |
443 | } | |
444 | if (num < 0) | |
445 | { | |
446 | putc ('-', asm_out_file); | |
447 | unum = -num; | |
448 | } | |
449 | else | |
450 | unum = num; | |
451 | ||
452 | NUMBER_FMT_LOOP (p, unum, 10); | |
453 | ||
454 | while (p < buf + sizeof buf) | |
455 | { | |
456 | putc (*p, asm_out_file); | |
457 | p++; | |
458 | } | |
459 | } | |
460 | ||
461 | \f | |
462 | /* Primitives for emitting simple stabs directives. All other stabs | |
463 | routines should use these functions instead of directly emitting | |
464 | stabs. They are exported because machine-dependent code may need | |
465 | to invoke them, e.g. in a DBX_OUTPUT_* macro whose definition | |
466 | forwards to code in CPU.c. */ | |
467 | ||
468 | /* The following functions should all be called immediately after one | |
469 | of the dbxout_begin_stab* functions (below). They write out | |
470 | various things as the value of a stab. */ | |
471 | ||
472 | /* Write out a literal zero as the value of a stab. */ | |
473 | void | |
474 | dbxout_stab_value_zero (void) | |
475 | { | |
476 | fputs ("0\n", asm_out_file); | |
477 | } | |
478 | ||
479 | /* Write out the label LABEL as the value of a stab. */ | |
480 | void | |
481 | dbxout_stab_value_label (const char *label) | |
482 | { | |
483 | assemble_name (asm_out_file, label); | |
484 | putc ('\n', asm_out_file); | |
485 | } | |
486 | ||
487 | /* Write out the difference of two labels, LABEL - BASE, as the value | |
488 | of a stab. */ | |
489 | void | |
490 | dbxout_stab_value_label_diff (const char *label, const char *base) | |
491 | { | |
492 | assemble_name (asm_out_file, label); | |
493 | putc ('-', asm_out_file); | |
494 | assemble_name (asm_out_file, base); | |
495 | putc ('\n', asm_out_file); | |
496 | } | |
497 | ||
498 | /* Write out an internal label as the value of a stab, and immediately | |
499 | emit that internal label. This should be used only when | |
500 | dbxout_stabd will not work. STEM is the name stem of the label, | |
501 | COUNTERP is a pointer to a counter variable which will be used to | |
502 | guarantee label uniqueness. */ | |
503 | void | |
504 | dbxout_stab_value_internal_label (const char *stem, int *counterp) | |
505 | { | |
506 | char label[100]; | |
507 | int counter = counterp ? (*counterp)++ : 0; | |
508 | ||
509 | ASM_GENERATE_INTERNAL_LABEL (label, stem, counter); | |
510 | dbxout_stab_value_label (label); | |
511 | targetm.asm_out.internal_label (asm_out_file, stem, counter); | |
512 | } | |
513 | ||
514 | /* Write out the difference between BASE and an internal label as the | |
515 | value of a stab, and immediately emit that internal label. STEM and | |
516 | COUNTERP are as for dbxout_stab_value_internal_label. */ | |
517 | void | |
518 | dbxout_stab_value_internal_label_diff (const char *stem, int *counterp, | |
519 | const char *base) | |
520 | { | |
521 | char label[100]; | |
522 | int counter = counterp ? (*counterp)++ : 0; | |
523 | ||
524 | ASM_GENERATE_INTERNAL_LABEL (label, stem, counter); | |
525 | dbxout_stab_value_label_diff (label, base); | |
526 | targetm.asm_out.internal_label (asm_out_file, stem, counter); | |
527 | } | |
528 | ||
529 | /* The following functions produce specific kinds of stab directives. */ | |
530 | ||
531 | /* Write a .stabd directive with type STYPE and desc SDESC to asm_out_file. */ | |
532 | void | |
533 | dbxout_stabd (int stype, int sdesc) | |
534 | { | |
535 | fputs (ASM_STABD_OP, asm_out_file); | |
536 | dbxout_int (stype); | |
537 | fputs (",0,", asm_out_file); | |
538 | dbxout_int (sdesc); | |
539 | putc ('\n', asm_out_file); | |
540 | } | |
541 | ||
542 | /* Write a .stabn directive with type STYPE. This function stops | |
543 | short of emitting the value field, which is the responsibility of | |
544 | the caller (normally it will be either a symbol or the difference | |
545 | of two symbols). */ | |
546 | ||
547 | void | |
548 | dbxout_begin_stabn (int stype) | |
549 | { | |
550 | fputs (ASM_STABN_OP, asm_out_file); | |
551 | dbxout_int (stype); | |
552 | fputs (",0,0,", asm_out_file); | |
553 | } | |
554 | ||
555 | /* Write a .stabn directive with type N_SLINE and desc LINE. As above, | |
556 | the value field is the responsibility of the caller. */ | |
557 | void | |
558 | dbxout_begin_stabn_sline (int lineno) | |
559 | { | |
560 | fputs (ASM_STABN_OP, asm_out_file); | |
561 | dbxout_int (N_SLINE); | |
562 | fputs (",0,", asm_out_file); | |
563 | dbxout_int (lineno); | |
564 | putc (',', asm_out_file); | |
565 | } | |
566 | ||
567 | /* Begin a .stabs directive with string "", type STYPE, and desc and | |
568 | other fields 0. The value field is the responsibility of the | |
569 | caller. This function cannot be used for .stabx directives. */ | |
570 | void | |
571 | dbxout_begin_empty_stabs (int stype) | |
572 | { | |
573 | fputs (ASM_STABS_OP, asm_out_file); | |
574 | fputs ("\"\",", asm_out_file); | |
575 | dbxout_int (stype); | |
576 | fputs (",0,0,", asm_out_file); | |
577 | } | |
578 | ||
579 | /* Begin a .stabs directive with string STR, type STYPE, and desc 0. | |
580 | The value field is the responsibility of the caller. */ | |
581 | void | |
582 | dbxout_begin_simple_stabs (const char *str, int stype) | |
583 | { | |
584 | fputs (ASM_STABS_OP, asm_out_file); | |
585 | output_quoted_string (asm_out_file, str); | |
586 | putc (',', asm_out_file); | |
587 | dbxout_int (stype); | |
588 | fputs (",0,0,", asm_out_file); | |
589 | } | |
590 | ||
591 | /* As above but use SDESC for the desc field. */ | |
592 | void | |
593 | dbxout_begin_simple_stabs_desc (const char *str, int stype, int sdesc) | |
594 | { | |
595 | fputs (ASM_STABS_OP, asm_out_file); | |
596 | output_quoted_string (asm_out_file, str); | |
597 | putc (',', asm_out_file); | |
598 | dbxout_int (stype); | |
599 | fputs (",0,", asm_out_file); | |
600 | dbxout_int (sdesc); | |
601 | putc (',', asm_out_file); | |
602 | } | |
603 | ||
604 | /* The next set of functions are entirely concerned with production of | |
605 | "complex" .stabs directives: that is, .stabs directives whose | |
606 | strings have to be constructed piecemeal. dbxout_type, | |
607 | dbxout_symbol, etc. use these routines heavily. The string is queued | |
608 | up in an obstack, then written out by dbxout_finish_complex_stabs, which | |
609 | is also responsible for splitting it up if it exceeds DBX_CONTIN_LENGTH. | |
610 | (You might think it would be more efficient to go straight to stdio | |
611 | when DBX_CONTIN_LENGTH is 0 (i.e. no length limit) but that turns | |
612 | out not to be the case, and anyway this needs fewer #ifdefs.) */ | |
613 | ||
614 | /* Begin a complex .stabs directive. If we can, write the initial | |
615 | ASM_STABS_OP to the asm_out_file. */ | |
616 | ||
617 | static void | |
618 | dbxout_begin_complex_stabs (void) | |
619 | { | |
620 | emit_pending_bincls_if_required (); | |
621 | FORCE_TEXT; | |
622 | fputs (ASM_STABS_OP, asm_out_file); | |
623 | putc ('"', asm_out_file); | |
624 | gcc_assert (stabstr_last_contin_point == 0); | |
625 | } | |
626 | ||
859ee18f ZW |
627 | /* As above, but do not force text or emit pending bincls. This is |
628 | used by dbxout_symbol_location, which needs to do something else. */ | |
629 | static void | |
630 | dbxout_begin_complex_stabs_noforcetext (void) | |
631 | { | |
632 | fputs (ASM_STABS_OP, asm_out_file); | |
633 | putc ('"', asm_out_file); | |
634 | gcc_assert (stabstr_last_contin_point == 0); | |
635 | } | |
636 | ||
93a27b7b ZW |
637 | /* Add CHR, a single character, to the string being built. */ |
638 | #define stabstr_C(chr) obstack_1grow (&stabstr_ob, chr) | |
639 | ||
640 | /* Add STR, a normal C string, to the string being built. */ | |
c3284718 | 641 | #define stabstr_S(str) obstack_grow (&stabstr_ob, str, strlen (str)) |
93a27b7b ZW |
642 | |
643 | /* Add the text of ID, an IDENTIFIER_NODE, to the string being built. */ | |
644 | #define stabstr_I(id) obstack_grow (&stabstr_ob, \ | |
645 | IDENTIFIER_POINTER (id), \ | |
646 | IDENTIFIER_LENGTH (id)) | |
647 | ||
648 | /* Add NUM, a signed decimal number, to the string being built. */ | |
649 | static void | |
650 | stabstr_D (HOST_WIDE_INT num) | |
651 | { | |
652 | char buf[64]; | |
653 | char *p = buf + sizeof buf; | |
654 | unsigned int unum; | |
655 | ||
656 | if (num == 0) | |
657 | { | |
658 | stabstr_C ('0'); | |
659 | return; | |
660 | } | |
661 | if (num < 0) | |
662 | { | |
663 | stabstr_C ('-'); | |
664 | unum = -num; | |
665 | } | |
666 | else | |
667 | unum = num; | |
668 | ||
669 | NUMBER_FMT_LOOP (p, unum, 10); | |
670 | ||
671 | obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p); | |
672 | } | |
673 | ||
674 | /* Add NUM, an unsigned decimal number, to the string being built. */ | |
675 | static void | |
676 | stabstr_U (unsigned HOST_WIDE_INT num) | |
677 | { | |
678 | char buf[64]; | |
679 | char *p = buf + sizeof buf; | |
680 | if (num == 0) | |
681 | { | |
682 | stabstr_C ('0'); | |
683 | return; | |
684 | } | |
685 | NUMBER_FMT_LOOP (p, num, 10); | |
686 | obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p); | |
687 | } | |
688 | ||
689 | /* Add CST, an INTEGER_CST tree, to the string being built as an | |
690 | unsigned octal number. This routine handles values which are | |
691 | larger than a single HOST_WIDE_INT. */ | |
692 | static void | |
693 | stabstr_O (tree cst) | |
694 | { | |
807e902e KZ |
695 | int prec = TYPE_PRECISION (TREE_TYPE (cst)); |
696 | int res_pres = prec % 3; | |
697 | int i; | |
698 | unsigned int digit; | |
93a27b7b ZW |
699 | |
700 | /* Leading zero for base indicator. */ | |
701 | stabstr_C ('0'); | |
702 | ||
703 | /* If the value is zero, the base indicator will serve as the value | |
704 | all by itself. */ | |
807e902e | 705 | if (wi::eq_p (cst, 0)) |
93a27b7b ZW |
706 | return; |
707 | ||
807e902e KZ |
708 | /* GDB wants constants with no extra leading "1" bits, so |
709 | we need to remove any sign-extension that might be | |
710 | present. */ | |
711 | if (res_pres == 1) | |
93a27b7b | 712 | { |
807e902e KZ |
713 | digit = wi::extract_uhwi (cst, prec - 1, 1); |
714 | stabstr_C ('0' + digit); | |
715 | } | |
716 | else if (res_pres == 2) | |
717 | { | |
718 | digit = wi::extract_uhwi (cst, prec - 2, 2); | |
719 | stabstr_C ('0' + digit); | |
93a27b7b ZW |
720 | } |
721 | ||
807e902e KZ |
722 | prec -= res_pres; |
723 | for (i = prec - 3; i >= 0; i = i - 3) | |
724 | { | |
725 | digit = wi::extract_uhwi (cst, i, 3); | |
726 | stabstr_C ('0' + digit); | |
727 | } | |
93a27b7b ZW |
728 | } |
729 | ||
730 | /* Called whenever it is safe to break a stabs string into multiple | |
731 | .stabs directives. If the current string has exceeded the limit | |
732 | set by DBX_CONTIN_LENGTH, mark the current position in the buffer | |
733 | as a continuation point by inserting DBX_CONTIN_CHAR (doubled if | |
734 | it is a backslash) and a null character. */ | |
735 | static inline void | |
736 | stabstr_continue (void) | |
737 | { | |
738 | if (DBX_CONTIN_LENGTH > 0 | |
739 | && obstack_object_size (&stabstr_ob) - stabstr_last_contin_point | |
740 | > DBX_CONTIN_LENGTH) | |
741 | { | |
742 | if (DBX_CONTIN_CHAR == '\\') | |
743 | obstack_1grow (&stabstr_ob, '\\'); | |
744 | obstack_1grow (&stabstr_ob, DBX_CONTIN_CHAR); | |
745 | obstack_1grow (&stabstr_ob, '\0'); | |
746 | stabstr_last_contin_point = obstack_object_size (&stabstr_ob); | |
747 | } | |
748 | } | |
749 | #define CONTIN stabstr_continue () | |
750 | ||
751 | /* Macro subroutine of dbxout_finish_complex_stabs, which emits | |
752 | all of the arguments to the .stabs directive after the string. | |
753 | Overridden by xcoffout.h. CODE is the stabs code for this symbol; | |
754 | LINE is the source line to write into the desc field (in extended | |
859ee18f | 755 | mode); SYM is the symbol itself. |
93a27b7b ZW |
756 | |
757 | ADDR, LABEL, and NUMBER are three different ways to represent the | |
758 | stabs value field. At most one of these should be nonzero. | |
759 | ||
760 | ADDR is used most of the time; it represents the value as an | |
761 | RTL address constant. | |
762 | ||
763 | LABEL is used (currently) only for N_CATCH stabs; it represents | |
764 | the value as a string suitable for assemble_name. | |
765 | ||
766 | NUMBER is used when the value is an offset from an implicit base | |
767 | pointer (e.g. for a stack variable), or an index (e.g. for a | |
768 | register variable). It represents the value as a decimal integer. */ | |
769 | ||
770 | #ifndef DBX_FINISH_STABS | |
859ee18f ZW |
771 | #define DBX_FINISH_STABS(SYM, CODE, LINE, ADDR, LABEL, NUMBER) \ |
772 | do { \ | |
93a27b7b ZW |
773 | int line_ = use_gnu_debug_info_extensions ? LINE : 0; \ |
774 | \ | |
775 | dbxout_int (CODE); \ | |
776 | fputs (",0,", asm_out_file); \ | |
777 | dbxout_int (line_); \ | |
778 | putc (',', asm_out_file); \ | |
779 | if (ADDR) \ | |
780 | output_addr_const (asm_out_file, ADDR); \ | |
781 | else if (LABEL) \ | |
782 | assemble_name (asm_out_file, LABEL); \ | |
783 | else \ | |
784 | dbxout_int (NUMBER); \ | |
785 | putc ('\n', asm_out_file); \ | |
786 | } while (0) | |
787 | #endif | |
788 | ||
789 | /* Finish the emission of a complex .stabs directive. When DBX_CONTIN_LENGTH | |
790 | is zero, this has only to emit the close quote and the remainder of | |
791 | the arguments. When it is nonzero, the string has been marshalled in | |
792 | stabstr_ob, and this routine is responsible for breaking it up into | |
793 | DBX_CONTIN_LENGTH-sized chunks. | |
794 | ||
795 | SYM is the DECL of the symbol under consideration; it is used only | |
796 | for its DECL_SOURCE_LINE. The other arguments are all passed directly | |
797 | to DBX_FINISH_STABS; see above for details. */ | |
b8698a0f | 798 | |
93a27b7b | 799 | static void |
dbb6088f | 800 | dbxout_finish_complex_stabs (tree sym, stab_code_type code, |
93a27b7b ZW |
801 | rtx addr, const char *label, int number) |
802 | { | |
12126025 | 803 | int line ATTRIBUTE_UNUSED; |
93a27b7b ZW |
804 | char *str; |
805 | size_t len; | |
806 | ||
12126025 | 807 | line = sym ? DECL_SOURCE_LINE (sym) : 0; |
93a27b7b ZW |
808 | if (DBX_CONTIN_LENGTH > 0) |
809 | { | |
810 | char *chunk; | |
811 | size_t chunklen; | |
812 | ||
813 | /* Nul-terminate the growing string, then get its size and | |
814 | address. */ | |
815 | obstack_1grow (&stabstr_ob, '\0'); | |
816 | ||
817 | len = obstack_object_size (&stabstr_ob); | |
7973fd2a | 818 | chunk = str = XOBFINISH (&stabstr_ob, char *); |
93a27b7b ZW |
819 | |
820 | /* Within the buffer are a sequence of NUL-separated strings, | |
821 | each of which is to be written out as a separate stab | |
822 | directive. */ | |
823 | for (;;) | |
824 | { | |
825 | chunklen = strlen (chunk); | |
826 | fwrite (chunk, 1, chunklen, asm_out_file); | |
827 | fputs ("\",", asm_out_file); | |
828 | ||
829 | /* Must add an extra byte to account for the NUL separator. */ | |
830 | chunk += chunklen + 1; | |
831 | len -= chunklen + 1; | |
832 | ||
833 | /* Only put a line number on the last stab in the sequence. */ | |
859ee18f ZW |
834 | DBX_FINISH_STABS (sym, code, len == 0 ? line : 0, |
835 | addr, label, number); | |
93a27b7b ZW |
836 | if (len == 0) |
837 | break; | |
838 | ||
839 | fputs (ASM_STABS_OP, asm_out_file); | |
840 | putc ('"', asm_out_file); | |
841 | } | |
842 | stabstr_last_contin_point = 0; | |
843 | } | |
844 | else | |
845 | { | |
846 | /* No continuations - we can put the whole string out at once. | |
847 | It is faster to augment the string with the close quote and | |
848 | comma than to do a two-character fputs. */ | |
849 | obstack_grow (&stabstr_ob, "\",", 2); | |
850 | len = obstack_object_size (&stabstr_ob); | |
7973fd2a | 851 | str = XOBFINISH (&stabstr_ob, char *); |
b8698a0f | 852 | |
93a27b7b | 853 | fwrite (str, 1, len, asm_out_file); |
859ee18f | 854 | DBX_FINISH_STABS (sym, code, line, addr, label, number); |
93a27b7b ZW |
855 | } |
856 | obstack_free (&stabstr_ob, str); | |
857 | } | |
858 | ||
96621ebf | 859 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
93a27b7b | 860 | |
f55dfa2f NF |
861 | /* When -gused is used, emit debug info for only used symbols. But in |
862 | addition to the standard intercepted debug_hooks there are some | |
863 | direct calls into this file, i.e., dbxout_symbol, dbxout_parms, and | |
864 | dbxout_reg_params. Those routines may also be called from a higher | |
865 | level intercepted routine. So to prevent recording data for an inner | |
866 | call to one of these for an intercept, we maintain an intercept | |
867 | nesting counter (debug_nesting). We only save the intercepted | |
868 | arguments if the nesting is 1. */ | |
869 | static int debug_nesting = 0; | |
870 | ||
871 | static tree *symbol_queue; | |
872 | static int symbol_queue_index = 0; | |
873 | static int symbol_queue_size = 0; | |
874 | ||
875 | #define DBXOUT_DECR_NESTING \ | |
876 | if (--debug_nesting == 0 && symbol_queue_index > 0) \ | |
877 | { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); } | |
878 | ||
879 | #define DBXOUT_DECR_NESTING_AND_RETURN(x) \ | |
880 | do {--debug_nesting; return (x);} while (0) | |
881 | ||
96621ebf TG |
882 | #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */ |
883 | ||
884 | #if defined (DBX_DEBUGGING_INFO) | |
885 | ||
cf440348 | 886 | static void |
725730f2 | 887 | dbxout_function_end (tree decl ATTRIBUTE_UNUSED) |
cf440348 JL |
888 | { |
889 | char lscope_label_name[100]; | |
750054a2 | 890 | |
403f8503 ZW |
891 | /* The Lscope label must be emitted even if we aren't doing anything |
892 | else; dbxout_block needs it. */ | |
d6b5193b | 893 | switch_to_section (function_section (current_function_decl)); |
b8698a0f | 894 | |
93a27b7b | 895 | /* Convert Lscope into the appropriate format for local labels in case |
cf440348 JL |
896 | the system doesn't insert underscores in front of user generated |
897 | labels. */ | |
e098f3a5 CD |
898 | ASM_GENERATE_INTERNAL_LABEL (lscope_label_name, "Lscope", scope_labelno); |
899 | targetm.asm_out.internal_label (asm_out_file, "Lscope", scope_labelno); | |
cf440348 | 900 | |
4a22dcdd UW |
901 | /* The N_FUN tag at the end of the function is a GNU extension, |
902 | which may be undesirable, and is unnecessary if we do not have | |
903 | named sections. */ | |
904 | if (!use_gnu_debug_info_extensions | |
905 | || NO_DBX_FUNCTION_END | |
677f3fa8 | 906 | || !targetm_common.have_named_sections) |
4a22dcdd UW |
907 | return; |
908 | ||
cf440348 JL |
909 | /* By convention, GCC will mark the end of a function with an N_FUN |
910 | symbol and an empty string. */ | |
87c8b4be CT |
911 | if (flag_reorder_blocks_and_partition) |
912 | { | |
913 | dbxout_begin_empty_stabs (N_FUN); | |
b8698a0f | 914 | dbxout_stab_value_label_diff (crtl->subsections.hot_section_end_label, |
38173d38 | 915 | crtl->subsections.hot_section_label); |
87c8b4be | 916 | dbxout_begin_empty_stabs (N_FUN); |
b8698a0f | 917 | dbxout_stab_value_label_diff (crtl->subsections.cold_section_end_label, |
38173d38 | 918 | crtl->subsections.cold_section_label); |
87c8b4be CT |
919 | } |
920 | else | |
921 | { | |
03471b3f CD |
922 | char begin_label[20]; |
923 | /* Reference current function start using LFBB. */ | |
e098f3a5 | 924 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); |
87c8b4be | 925 | dbxout_begin_empty_stabs (N_FUN); |
03471b3f | 926 | dbxout_stab_value_label_diff (lscope_label_name, begin_label); |
87c8b4be | 927 | } |
8fa5469d | 928 | |
5d865dac | 929 | if (!NO_DBX_BNSYM_ENSYM && !flag_debug_only_used_symbols) |
93a27b7b | 930 | dbxout_stabd (N_ENSYM, 0); |
cf440348 | 931 | } |
c3fb23f4 | 932 | #endif /* DBX_DEBUGGING_INFO */ |
cf440348 | 933 | |
0456cbf6 | 934 | /* Get lang description for N_SO stab. */ |
93a27b7b | 935 | static unsigned int ATTRIBUTE_UNUSED |
0456cbf6 DP |
936 | get_lang_number (void) |
937 | { | |
938 | const char *language_string = lang_hooks.name; | |
939 | ||
940 | if (strcmp (language_string, "GNU C") == 0) | |
941 | return N_SO_C; | |
942 | else if (strcmp (language_string, "GNU C++") == 0) | |
943 | return N_SO_CC; | |
944 | else if (strcmp (language_string, "GNU F77") == 0) | |
945 | return N_SO_FORTRAN; | |
3135ce84 | 946 | else if (strcmp (language_string, "GNU Fortran") == 0) |
0456cbf6 DP |
947 | return N_SO_FORTRAN90; /* CHECKME */ |
948 | else if (strcmp (language_string, "GNU Pascal") == 0) | |
949 | return N_SO_PASCAL; | |
950 | else if (strcmp (language_string, "GNU Objective-C") == 0) | |
951 | return N_SO_OBJC; | |
6e955430 ZL |
952 | else if (strcmp (language_string, "GNU Objective-C++") == 0) |
953 | return N_SO_OBJCPLUS; | |
0456cbf6 DP |
954 | else |
955 | return 0; | |
956 | ||
957 | } | |
958 | ||
7151ffbe GH |
959 | static bool |
960 | is_fortran (void) | |
961 | { | |
962 | unsigned int lang = get_lang_number (); | |
963 | ||
964 | return (lang == N_SO_FORTRAN) || (lang == N_SO_FORTRAN90); | |
965 | } | |
966 | ||
00fe048c RS |
967 | /* At the beginning of compilation, start writing the symbol table. |
968 | Initialize `typevec' and output the standard data types of C. */ | |
969 | ||
a51d908e | 970 | static void |
7080f735 | 971 | dbxout_init (const char *input_file_name) |
00fe048c RS |
972 | { |
973 | char ltext_label_name[100]; | |
93a27b7b | 974 | bool used_ltext_label_name = false; |
ae2bcd98 | 975 | tree syms = lang_hooks.decls.getdecls (); |
c8aea42c | 976 | const char *mapped_name; |
00fe048c | 977 | |
00fe048c | 978 | typevec_len = 100; |
766090c2 | 979 | typevec = ggc_cleared_vec_alloc<typeinfo> (typevec_len); |
00fe048c | 980 | |
93a27b7b ZW |
981 | /* stabstr_ob contains one string, which will be just fine with |
982 | 1-byte alignment. */ | |
983 | obstack_specify_allocation (&stabstr_ob, 0, 1, xmalloc, free); | |
984 | ||
00fe048c RS |
985 | /* Convert Ltext into the appropriate format for local labels in case |
986 | the system doesn't insert underscores in front of user generated | |
987 | labels. */ | |
988 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
989 | ||
990 | /* Put the current working directory in an N_SO symbol. */ | |
93a27b7b | 991 | if (use_gnu_debug_info_extensions && !NO_DBX_MAIN_SOURCE_DIRECTORY) |
b372168c | 992 | { |
ac746f1d ZW |
993 | static const char *cwd; |
994 | ||
995 | if (!cwd) | |
b372168c | 996 | { |
ac746f1d ZW |
997 | cwd = get_src_pwd (); |
998 | if (cwd[0] == '\0') | |
999 | cwd = "/"; | |
1000 | else if (!IS_DIR_SEPARATOR (cwd[strlen (cwd) - 1])) | |
1001 | cwd = concat (cwd, "/", NULL); | |
c8aea42c | 1002 | cwd = remap_debug_filename (cwd); |
ac746f1d | 1003 | } |
00fe048c | 1004 | #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY |
ac746f1d | 1005 | DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asm_out_file, cwd); |
00fe048c | 1006 | #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
93a27b7b ZW |
1007 | dbxout_begin_simple_stabs_desc (cwd, N_SO, get_lang_number ()); |
1008 | dbxout_stab_value_label (ltext_label_name); | |
1009 | used_ltext_label_name = true; | |
00fe048c | 1010 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
b372168c | 1011 | } |
00fe048c | 1012 | |
c8aea42c | 1013 | mapped_name = remap_debug_filename (input_file_name); |
00fe048c | 1014 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME |
c8aea42c | 1015 | DBX_OUTPUT_MAIN_SOURCE_FILENAME (asm_out_file, mapped_name); |
ad087b92 | 1016 | #else |
c8aea42c | 1017 | dbxout_begin_simple_stabs_desc (mapped_name, N_SO, get_lang_number ()); |
93a27b7b ZW |
1018 | dbxout_stab_value_label (ltext_label_name); |
1019 | used_ltext_label_name = true; | |
1020 | #endif | |
1021 | ||
1022 | if (used_ltext_label_name) | |
1023 | { | |
d6b5193b | 1024 | switch_to_section (text_section); |
93a27b7b ZW |
1025 | targetm.asm_out.internal_label (asm_out_file, "Ltext", 0); |
1026 | } | |
1027 | ||
ac746f1d ZW |
1028 | /* Emit an N_OPT stab to indicate that this file was compiled by GCC. |
1029 | The string used is historical. */ | |
93a27b7b ZW |
1030 | #ifndef NO_DBX_GCC_MARKER |
1031 | dbxout_begin_simple_stabs ("gcc2_compiled.", N_OPT); | |
1032 | dbxout_stab_value_zero (); | |
ad087b92 | 1033 | #endif |
01571284 | 1034 | |
33b49800 | 1035 | base_input_file = lastfile = input_file_name; |
00fe048c RS |
1036 | |
1037 | next_type_number = 1; | |
00fe048c | 1038 | |
4bcaafd9 | 1039 | #ifdef DBX_USE_BINCL |
5ed6ace5 | 1040 | current_file = XNEW (struct dbx_file); |
4bcaafd9 ILT |
1041 | current_file->next = NULL; |
1042 | current_file->file_number = 0; | |
1043 | current_file->next_type_number = 1; | |
1044 | next_file_number = 1; | |
33e9d2aa DP |
1045 | current_file->prev = NULL; |
1046 | current_file->bincl_status = BINCL_NOT_REQUIRED; | |
1047 | current_file->pending_bincl_name = NULL; | |
4bcaafd9 ILT |
1048 | #endif |
1049 | ||
47aa0df4 MM |
1050 | /* Get all permanent types that have typedef names, and output them |
1051 | all, except for those already output. Some language front ends | |
21d13d83 ZW |
1052 | put these declarations in the top-level scope; some do not; |
1053 | the latter are responsible for calling debug_hooks->type_decl from | |
1054 | their record_builtin_type function. */ | |
00fe048c | 1055 | dbxout_typedefs (syms); |
21d13d83 ZW |
1056 | |
1057 | if (preinit_symbols) | |
1058 | { | |
1059 | tree t; | |
1060 | for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t)) | |
1061 | dbxout_symbol (TREE_VALUE (t), 0); | |
1062 | preinit_symbols = 0; | |
1063 | } | |
00fe048c RS |
1064 | } |
1065 | ||
0ee55ad8 | 1066 | /* Output any typedef names for types described by TYPE_DECLs in SYMS. */ |
00fe048c RS |
1067 | |
1068 | static void | |
7080f735 | 1069 | dbxout_typedefs (tree syms) |
00fe048c | 1070 | { |
910ad8de | 1071 | for (; syms != NULL_TREE; syms = DECL_CHAIN (syms)) |
00fe048c | 1072 | { |
00fe048c RS |
1073 | if (TREE_CODE (syms) == TYPE_DECL) |
1074 | { | |
1075 | tree type = TREE_TYPE (syms); | |
1076 | if (TYPE_NAME (type) | |
1077 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
a354c7d6 | 1078 | && COMPLETE_OR_VOID_TYPE_P (type) |
00fe048c RS |
1079 | && ! TREE_ASM_WRITTEN (TYPE_NAME (type))) |
1080 | dbxout_symbol (TYPE_NAME (type), 0); | |
1081 | } | |
1082 | } | |
1083 | } | |
1084 | ||
f23b9d52 | 1085 | #ifdef DBX_USE_BINCL |
4ed43216 | 1086 | /* Emit BINCL stab using given name. */ |
33e9d2aa DP |
1087 | static void |
1088 | emit_bincl_stab (const char *name) | |
1089 | { | |
93a27b7b ZW |
1090 | dbxout_begin_simple_stabs (name, N_BINCL); |
1091 | dbxout_stab_value_zero (); | |
33e9d2aa DP |
1092 | } |
1093 | ||
1094 | /* If there are pending bincls then it is time to emit all of them. */ | |
1095 | ||
1096 | static inline void | |
7e51717c | 1097 | emit_pending_bincls_if_required (void) |
33e9d2aa | 1098 | { |
33e9d2aa DP |
1099 | if (pending_bincls) |
1100 | emit_pending_bincls (); | |
33e9d2aa DP |
1101 | } |
1102 | ||
1103 | /* Emit all pending bincls. */ | |
1104 | ||
1105 | static void | |
7e51717c | 1106 | emit_pending_bincls (void) |
33e9d2aa DP |
1107 | { |
1108 | struct dbx_file *f = current_file; | |
1109 | ||
1110 | /* Find first pending bincl. */ | |
1111 | while (f->bincl_status == BINCL_PENDING) | |
1112 | f = f->next; | |
1113 | ||
1114 | /* Now emit all bincls. */ | |
1115 | f = f->prev; | |
1116 | ||
1117 | while (f) | |
1118 | { | |
1119 | if (f->bincl_status == BINCL_PENDING) | |
1120 | { | |
1121 | emit_bincl_stab (f->pending_bincl_name); | |
1122 | ||
1123 | /* Update file number and status. */ | |
1124 | f->file_number = next_file_number++; | |
1125 | f->bincl_status = BINCL_PROCESSED; | |
1126 | } | |
1127 | if (f == current_file) | |
1128 | break; | |
1129 | f = f->prev; | |
1130 | } | |
1131 | ||
1132 | /* All pending bincls have been emitted. */ | |
1133 | pending_bincls = 0; | |
1134 | } | |
1135 | ||
f23b9d52 DE |
1136 | #else |
1137 | ||
1138 | static inline void | |
7e51717c | 1139 | emit_pending_bincls_if_required (void) {} |
f23b9d52 DE |
1140 | #endif |
1141 | ||
4bcaafd9 ILT |
1142 | /* Change to reading from a new source file. Generate a N_BINCL stab. */ |
1143 | ||
7f905405 | 1144 | static void |
7080f735 AJ |
1145 | dbxout_start_source_file (unsigned int line ATTRIBUTE_UNUSED, |
1146 | const char *filename ATTRIBUTE_UNUSED) | |
4bcaafd9 ILT |
1147 | { |
1148 | #ifdef DBX_USE_BINCL | |
5ed6ace5 | 1149 | struct dbx_file *n = XNEW (struct dbx_file); |
4bcaafd9 ILT |
1150 | |
1151 | n->next = current_file; | |
4bcaafd9 | 1152 | n->next_type_number = 1; |
b8698a0f | 1153 | /* Do not assign file number now. |
33e9d2aa DP |
1154 | Delay it until we actually emit BINCL. */ |
1155 | n->file_number = 0; | |
1156 | n->prev = NULL; | |
1157 | current_file->prev = n; | |
1158 | n->bincl_status = BINCL_PENDING; | |
c8aea42c | 1159 | n->pending_bincl_name = remap_debug_filename (filename); |
33e9d2aa | 1160 | pending_bincls = 1; |
4bcaafd9 | 1161 | current_file = n; |
4bcaafd9 ILT |
1162 | #endif |
1163 | } | |
1164 | ||
1165 | /* Revert to reading a previous source file. Generate a N_EINCL stab. */ | |
1166 | ||
7f905405 | 1167 | static void |
7080f735 | 1168 | dbxout_end_source_file (unsigned int line ATTRIBUTE_UNUSED) |
4bcaafd9 ILT |
1169 | { |
1170 | #ifdef DBX_USE_BINCL | |
33e9d2aa DP |
1171 | /* Emit EINCL stab only if BINCL is not pending. */ |
1172 | if (current_file->bincl_status == BINCL_PROCESSED) | |
93a27b7b ZW |
1173 | { |
1174 | dbxout_begin_stabn (N_EINCL); | |
1175 | dbxout_stab_value_zero (); | |
1176 | } | |
33e9d2aa | 1177 | current_file->bincl_status = BINCL_NOT_REQUIRED; |
17211ab5 | 1178 | current_file = current_file->next; |
4bcaafd9 ILT |
1179 | #endif |
1180 | } | |
1181 | ||
33b49800 GK |
1182 | /* Handle a few odd cases that occur when trying to make PCH files work. */ |
1183 | ||
1184 | static void | |
1185 | dbxout_handle_pch (unsigned at_end) | |
1186 | { | |
1187 | if (! at_end) | |
1188 | { | |
1189 | /* When using the PCH, this file will be included, so we need to output | |
1190 | a BINCL. */ | |
1191 | dbxout_start_source_file (0, lastfile); | |
1192 | ||
1193 | /* The base file when using the PCH won't be the same as | |
1194 | the base file when it's being generated. */ | |
1195 | lastfile = NULL; | |
1196 | } | |
1197 | else | |
1198 | { | |
71c0e7fc | 1199 | /* ... and an EINCL. */ |
33b49800 GK |
1200 | dbxout_end_source_file (0); |
1201 | ||
1202 | /* Deal with cases where 'lastfile' was never actually changed. */ | |
1203 | lastfile_is_base = lastfile == NULL; | |
1204 | } | |
1205 | } | |
1206 | ||
c3fb23f4 | 1207 | #if defined (DBX_DEBUGGING_INFO) |
b420396f OH |
1208 | |
1209 | static void dbxout_block (tree, int, tree); | |
1210 | ||
00fe048c RS |
1211 | /* Output debugging info to FILE to switch to sourcefile FILENAME. */ |
1212 | ||
e1772ac0 | 1213 | static void |
93a27b7b | 1214 | dbxout_source_file (const char *filename) |
00fe048c | 1215 | { |
33b49800 GK |
1216 | if (lastfile == 0 && lastfile_is_base) |
1217 | { | |
1218 | lastfile = base_input_file; | |
1219 | lastfile_is_base = 0; | |
1220 | } | |
1221 | ||
00fe048c RS |
1222 | if (filename && (lastfile == 0 || strcmp (filename, lastfile))) |
1223 | { | |
93a27b7b ZW |
1224 | /* Don't change section amid function. */ |
1225 | if (current_function_decl == NULL_TREE) | |
d6b5193b | 1226 | switch_to_section (text_section); |
93a27b7b | 1227 | |
c8aea42c | 1228 | dbxout_begin_simple_stabs (remap_debug_filename (filename), N_SOL); |
93a27b7b | 1229 | dbxout_stab_value_internal_label ("Ltext", &source_label_number); |
00fe048c RS |
1230 | lastfile = filename; |
1231 | } | |
1232 | } | |
1233 | ||
b8698a0f | 1234 | /* Output N_BNSYM, line number symbol entry, and local symbol at |
03471b3f | 1235 | function scope */ |
8fa5469d DP |
1236 | |
1237 | static void | |
1238 | dbxout_begin_prologue (unsigned int lineno, const char *filename) | |
1239 | { | |
8768c655 RH |
1240 | if (use_gnu_debug_info_extensions |
1241 | && !NO_DBX_FUNCTION_END | |
5d865dac | 1242 | && !NO_DBX_BNSYM_ENSYM |
8768c655 | 1243 | && !flag_debug_only_used_symbols) |
93a27b7b | 1244 | dbxout_stabd (N_BNSYM, 0); |
8fa5469d | 1245 | |
e098f3a5 CD |
1246 | /* pre-increment the scope counter */ |
1247 | scope_labelno++; | |
1248 | ||
ed5ef2e4 | 1249 | dbxout_source_line (lineno, filename, 0, true); |
b8698a0f | 1250 | /* Output function begin block at function scope, referenced |
03471b3f CD |
1251 | by dbxout_block, dbxout_source_line and dbxout_function_end. */ |
1252 | emit_pending_bincls_if_required (); | |
1253 | targetm.asm_out.internal_label (asm_out_file, "LFBB", scope_labelno); | |
8fa5469d DP |
1254 | } |
1255 | ||
653e276c NB |
1256 | /* Output a line number symbol entry for source file FILENAME and line |
1257 | number LINENO. */ | |
674c724c | 1258 | |
e2a12aca | 1259 | static void |
6c52e687 | 1260 | dbxout_source_line (unsigned int lineno, const char *filename, |
ed5ef2e4 CC |
1261 | int discriminator ATTRIBUTE_UNUSED, |
1262 | bool is_stmt ATTRIBUTE_UNUSED) | |
674c724c | 1263 | { |
93a27b7b | 1264 | dbxout_source_file (filename); |
674c724c | 1265 | |
3e487b21 | 1266 | #ifdef DBX_OUTPUT_SOURCE_LINE |
3e487b21 | 1267 | DBX_OUTPUT_SOURCE_LINE (asm_out_file, lineno, dbxout_source_line_counter); |
674c724c | 1268 | #else |
3e487b21 ZW |
1269 | if (DBX_LINES_FUNCTION_RELATIVE) |
1270 | { | |
03471b3f | 1271 | char begin_label[20]; |
93a27b7b | 1272 | dbxout_begin_stabn_sline (lineno); |
03471b3f | 1273 | /* Reference current function start using LFBB. */ |
b8698a0f | 1274 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); |
93a27b7b | 1275 | dbxout_stab_value_internal_label_diff ("LM", &dbxout_source_line_counter, |
03471b3f | 1276 | begin_label); |
3e487b21 ZW |
1277 | } |
1278 | else | |
93a27b7b | 1279 | dbxout_stabd (N_SLINE, lineno); |
674c724c RS |
1280 | #endif |
1281 | } | |
1282 | ||
a5a42b92 NB |
1283 | /* Describe the beginning of an internal block within a function. */ |
1284 | ||
1285 | static void | |
7080f735 | 1286 | dbxout_begin_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n) |
a5a42b92 | 1287 | { |
33e9d2aa | 1288 | emit_pending_bincls_if_required (); |
3e487b21 | 1289 | targetm.asm_out.internal_label (asm_out_file, "LBB", n); |
a5a42b92 NB |
1290 | } |
1291 | ||
1292 | /* Describe the end line-number of an internal block within a function. */ | |
1293 | ||
1294 | static void | |
7080f735 | 1295 | dbxout_end_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n) |
a5a42b92 | 1296 | { |
33e9d2aa | 1297 | emit_pending_bincls_if_required (); |
3e487b21 | 1298 | targetm.asm_out.internal_label (asm_out_file, "LBE", n); |
a5a42b92 NB |
1299 | } |
1300 | ||
2b85879e NB |
1301 | /* Output dbx data for a function definition. |
1302 | This includes a definition of the function name itself (a symbol), | |
1303 | definitions of the parameters (locating them in the parameter list) | |
1304 | and then output the block that makes up the function's body | |
1305 | (including all the auto variables of the function). */ | |
1306 | ||
1307 | static void | |
7080f735 | 1308 | dbxout_function_decl (tree decl) |
2b85879e | 1309 | { |
33e9d2aa | 1310 | emit_pending_bincls_if_required (); |
2b85879e NB |
1311 | #ifndef DBX_FUNCTION_FIRST |
1312 | dbxout_begin_function (decl); | |
1313 | #endif | |
1314 | dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); | |
847d0c08 | 1315 | dbxout_function_end (decl); |
2b85879e NB |
1316 | } |
1317 | ||
a5a42b92 NB |
1318 | #endif /* DBX_DEBUGGING_INFO */ |
1319 | ||
440aabf8 NB |
1320 | /* Debug information for a global DECL. Called from toplev.c after |
1321 | compilation proper has finished. */ | |
1322 | static void | |
9de41e57 | 1323 | dbxout_global_decl (tree decl) |
440aabf8 | 1324 | { |
9bfa80fb | 1325 | if (TREE_CODE (decl) == VAR_DECL && !DECL_EXTERNAL (decl)) |
6a08f7b3 DP |
1326 | { |
1327 | int saved_tree_used = TREE_USED (decl); | |
1328 | TREE_USED (decl) = 1; | |
1329 | dbxout_symbol (decl, 0); | |
1330 | TREE_USED (decl) = saved_tree_used; | |
1331 | } | |
3a538a66 | 1332 | } |
440aabf8 | 1333 | |
21d13d83 ZW |
1334 | /* This is just a function-type adapter; dbxout_symbol does exactly |
1335 | what we want but returns an int. */ | |
1336 | static void | |
1337 | dbxout_type_decl (tree decl, int local) | |
1338 | { | |
1339 | dbxout_symbol (decl, local); | |
1340 | } | |
1341 | ||
00fe048c | 1342 | /* At the end of compilation, finish writing the symbol table. |
3e487b21 | 1343 | The default is to call debug_free_queue but do nothing else. */ |
00fe048c | 1344 | |
a51d908e | 1345 | static void |
7080f735 | 1346 | dbxout_finish (const char *filename ATTRIBUTE_UNUSED) |
00fe048c RS |
1347 | { |
1348 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END | |
3e487b21 ZW |
1349 | DBX_OUTPUT_MAIN_SOURCE_FILE_END (asm_out_file, filename); |
1350 | #elif defined DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END | |
1351 | { | |
d6b5193b | 1352 | switch_to_section (text_section); |
93a27b7b ZW |
1353 | dbxout_begin_empty_stabs (N_SO); |
1354 | dbxout_stab_value_internal_label ("Letext", 0); | |
3e487b21 ZW |
1355 | } |
1356 | #endif | |
6a08f7b3 | 1357 | debug_free_queue (); |
00fe048c RS |
1358 | } |
1359 | ||
4bcaafd9 ILT |
1360 | /* Output the index of a type. */ |
1361 | ||
1362 | static void | |
7080f735 | 1363 | dbxout_type_index (tree type) |
4bcaafd9 ILT |
1364 | { |
1365 | #ifndef DBX_USE_BINCL | |
93a27b7b | 1366 | stabstr_D (TYPE_SYMTAB_ADDRESS (type)); |
4bcaafd9 ILT |
1367 | #else |
1368 | struct typeinfo *t = &typevec[TYPE_SYMTAB_ADDRESS (type)]; | |
93a27b7b ZW |
1369 | stabstr_C ('('); |
1370 | stabstr_D (t->file_number); | |
1371 | stabstr_C (','); | |
1372 | stabstr_D (t->type_number); | |
1373 | stabstr_C (')'); | |
4bcaafd9 ILT |
1374 | #endif |
1375 | } | |
1376 | ||
00fe048c | 1377 | \f |
1ed13f83 NF |
1378 | /* Generate the symbols for any queued up type symbols we encountered |
1379 | while generating the type info for some originally used symbol. | |
1380 | This might generate additional entries in the queue. Only when | |
1381 | the nesting depth goes to 0 is this routine called. */ | |
1382 | ||
1383 | static void | |
1384 | debug_flush_symbol_queue (void) | |
1385 | { | |
1386 | int i; | |
1387 | ||
1388 | /* Make sure that additionally queued items are not flushed | |
1389 | prematurely. */ | |
1390 | ||
1391 | ++debug_nesting; | |
1392 | ||
1393 | for (i = 0; i < symbol_queue_index; ++i) | |
1394 | { | |
1395 | /* If we pushed queued symbols then such symbols must be | |
1396 | output no matter what anyone else says. Specifically, | |
1397 | we need to make sure dbxout_symbol() thinks the symbol was | |
1398 | used and also we need to override TYPE_DECL_SUPPRESS_DEBUG | |
1399 | which may be set for outside reasons. */ | |
1400 | int saved_tree_used = TREE_USED (symbol_queue[i]); | |
1401 | int saved_suppress_debug = TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]); | |
1402 | TREE_USED (symbol_queue[i]) = 1; | |
1403 | TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = 0; | |
1404 | ||
1405 | #ifdef DBX_DEBUGGING_INFO | |
1406 | dbxout_symbol (symbol_queue[i], 0); | |
1407 | #endif | |
1408 | ||
1409 | TREE_USED (symbol_queue[i]) = saved_tree_used; | |
1410 | TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = saved_suppress_debug; | |
1411 | } | |
1412 | ||
1413 | symbol_queue_index = 0; | |
1414 | --debug_nesting; | |
1415 | } | |
1416 | ||
1417 | /* Queue a type symbol needed as part of the definition of a decl | |
1418 | symbol. These symbols are generated when debug_flush_symbol_queue() | |
1419 | is called. */ | |
93a27b7b | 1420 | |
1ed13f83 NF |
1421 | static void |
1422 | debug_queue_symbol (tree decl) | |
1423 | { | |
1424 | if (symbol_queue_index >= symbol_queue_size) | |
1425 | { | |
1426 | symbol_queue_size += 10; | |
1427 | symbol_queue = XRESIZEVEC (tree, symbol_queue, symbol_queue_size); | |
1428 | } | |
1429 | ||
1430 | symbol_queue[symbol_queue_index++] = decl; | |
1431 | } | |
1432 | ||
1433 | /* Free symbol queue. */ | |
1434 | static void | |
1435 | debug_free_queue (void) | |
1436 | { | |
1437 | if (symbol_queue) | |
1438 | { | |
1439 | free (symbol_queue); | |
1440 | symbol_queue = NULL; | |
1441 | symbol_queue_size = 0; | |
1442 | } | |
1443 | } | |
1444 | \f | |
93a27b7b ZW |
1445 | /* Used in several places: evaluates to '0' for a private decl, |
1446 | '1' for a protected decl, '2' for a public decl. */ | |
1447 | #define DECL_ACCESSIBILITY_CHAR(DECL) \ | |
6e57a01d | 1448 | (TREE_PRIVATE (DECL) ? '0' : TREE_PROTECTED (DECL) ? '1' : '2') |
93a27b7b | 1449 | |
6dc42e49 | 1450 | /* Subroutine of `dbxout_type'. Output the type fields of TYPE. |
00fe048c RS |
1451 | This must be a separate function because anonymous unions require |
1452 | recursive calls. */ | |
1453 | ||
1454 | static void | |
7080f735 | 1455 | dbxout_type_fields (tree type) |
00fe048c RS |
1456 | { |
1457 | tree tem; | |
665f2503 | 1458 | |
15a5b8a2 | 1459 | /* Output the name, type, position (in bits), size (in bits) of each |
665f2503 | 1460 | field that we can support. */ |
910ad8de | 1461 | for (tem = TYPE_FIELDS (type); tem; tem = DECL_CHAIN (tem)) |
00fe048c | 1462 | { |
666c27b9 KH |
1463 | /* If one of the nodes is an error_mark or its type is then |
1464 | return early. */ | |
b504a918 | 1465 | if (error_operand_p (tem)) |
975421be AP |
1466 | return; |
1467 | ||
00fe048c | 1468 | /* Omit here local type decls until we know how to support them. */ |
665f2503 | 1469 | if (TREE_CODE (tem) == TYPE_DECL |
b8621d81 AH |
1470 | /* Omit here the nameless fields that are used to skip bits. */ |
1471 | || DECL_IGNORED_P (tem) | |
665f2503 RK |
1472 | /* Omit fields whose position or size are variable or too large to |
1473 | represent. */ | |
1474 | || (TREE_CODE (tem) == FIELD_DECL | |
9541ffee | 1475 | && (! tree_fits_shwi_p (bit_position (tem)) |
06ebf127 | 1476 | || ! DECL_SIZE (tem) |
cc269bb6 | 1477 | || ! tree_fits_uhwi_p (DECL_SIZE (tem))))) |
7b1f7d51 | 1478 | continue; |
665f2503 | 1479 | |
5b6e175e | 1480 | else if (TREE_CODE (tem) != CONST_DECL) |
00fe048c RS |
1481 | { |
1482 | /* Continue the line if necessary, | |
1483 | but not before the first field. */ | |
1484 | if (tem != TYPE_FIELDS (type)) | |
665f2503 | 1485 | CONTIN; |
00fe048c | 1486 | |
5b6e175e | 1487 | if (DECL_NAME (tem)) |
93a27b7b ZW |
1488 | stabstr_I (DECL_NAME (tem)); |
1489 | stabstr_C (':'); | |
00fe048c | 1490 | |
196cedd0 | 1491 | if (use_gnu_debug_info_extensions |
00fe048c RS |
1492 | && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem) |
1493 | || TREE_CODE (tem) != FIELD_DECL)) | |
1494 | { | |
93a27b7b ZW |
1495 | stabstr_C ('/'); |
1496 | stabstr_C (DECL_ACCESSIBILITY_CHAR (tem)); | |
00fe048c RS |
1497 | } |
1498 | ||
1499 | dbxout_type ((TREE_CODE (tem) == FIELD_DECL | |
1500 | && DECL_BIT_FIELD_TYPE (tem)) | |
deda4b76 | 1501 | ? DECL_BIT_FIELD_TYPE (tem) : TREE_TYPE (tem), 0); |
00fe048c RS |
1502 | |
1503 | if (TREE_CODE (tem) == VAR_DECL) | |
1504 | { | |
196cedd0 | 1505 | if (TREE_STATIC (tem) && use_gnu_debug_info_extensions) |
00fe048c | 1506 | { |
02e3f1a8 RK |
1507 | tree name = DECL_ASSEMBLER_NAME (tem); |
1508 | ||
93a27b7b ZW |
1509 | stabstr_C (':'); |
1510 | stabstr_I (name); | |
1511 | stabstr_C (';'); | |
00fe048c RS |
1512 | } |
1513 | else | |
93a27b7b ZW |
1514 | /* If TEM is non-static, GDB won't understand it. */ |
1515 | stabstr_S (",0,0;"); | |
00fe048c | 1516 | } |
665f2503 | 1517 | else |
00fe048c | 1518 | { |
93a27b7b ZW |
1519 | stabstr_C (','); |
1520 | stabstr_D (int_bit_position (tem)); | |
1521 | stabstr_C (','); | |
ae7e9ddd | 1522 | stabstr_D (tree_to_uhwi (DECL_SIZE (tem))); |
93a27b7b | 1523 | stabstr_C (';'); |
00fe048c | 1524 | } |
00fe048c RS |
1525 | } |
1526 | } | |
1527 | } | |
1528 | \f | |
6dc42e49 | 1529 | /* Subroutine of `dbxout_type_methods'. Output debug info about the |
93a27b7b | 1530 | method described DECL. */ |
00fe048c RS |
1531 | |
1532 | static void | |
93a27b7b | 1533 | dbxout_type_method_1 (tree decl) |
00fe048c | 1534 | { |
00fe048c RS |
1535 | char c1 = 'A', c2; |
1536 | ||
1537 | if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE) | |
1538 | c2 = '?'; | |
1539 | else /* it's a METHOD_TYPE. */ | |
1540 | { | |
213ecac9 | 1541 | tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))); |
00fe048c RS |
1542 | /* A for normal functions. |
1543 | B for `const' member functions. | |
1544 | C for `volatile' member functions. | |
1545 | D for `const volatile' member functions. */ | |
1546 | if (TYPE_READONLY (TREE_TYPE (firstarg))) | |
1547 | c1 += 1; | |
1548 | if (TYPE_VOLATILE (TREE_TYPE (firstarg))) | |
1549 | c1 += 2; | |
1550 | ||
1551 | if (DECL_VINDEX (decl)) | |
1552 | c2 = '*'; | |
1553 | else | |
1554 | c2 = '.'; | |
1555 | } | |
1556 | ||
93a27b7b ZW |
1557 | /* ??? Output the mangled name, which contains an encoding of the |
1558 | method's type signature. May not be necessary anymore. */ | |
1559 | stabstr_C (':'); | |
1560 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
1561 | stabstr_C (';'); | |
1562 | stabstr_C (DECL_ACCESSIBILITY_CHAR (decl)); | |
1563 | stabstr_C (c1); | |
1564 | stabstr_C (c2); | |
665f2503 | 1565 | |
9541ffee | 1566 | if (DECL_VINDEX (decl) && tree_fits_shwi_p (DECL_VINDEX (decl))) |
00fe048c | 1567 | { |
9439e9a1 | 1568 | stabstr_D (tree_to_shwi (DECL_VINDEX (decl))); |
93a27b7b | 1569 | stabstr_C (';'); |
deda4b76 | 1570 | dbxout_type (DECL_CONTEXT (decl), 0); |
93a27b7b | 1571 | stabstr_C (';'); |
00fe048c RS |
1572 | } |
1573 | } | |
1574 | \f | |
1575 | /* Subroutine of `dbxout_type'. Output debug info about the methods defined | |
1576 | in TYPE. */ | |
1577 | ||
1578 | static void | |
7080f735 | 1579 | dbxout_type_methods (tree type) |
00fe048c RS |
1580 | { |
1581 | /* C++: put out the method names and their parameter lists */ | |
00fe048c | 1582 | tree methods = TYPE_METHODS (type); |
b3694847 SS |
1583 | tree fndecl; |
1584 | tree last; | |
00fe048c RS |
1585 | |
1586 | if (methods == NULL_TREE) | |
1587 | return; | |
1588 | ||
6d89b990 | 1589 | if (TREE_CODE (methods) != TREE_VEC) |
d26ab756 RS |
1590 | fndecl = methods; |
1591 | else if (TREE_VEC_ELT (methods, 0) != NULL_TREE) | |
00fe048c | 1592 | fndecl = TREE_VEC_ELT (methods, 0); |
196cedd0 RS |
1593 | else |
1594 | fndecl = TREE_VEC_ELT (methods, 1); | |
00fe048c | 1595 | |
00fe048c RS |
1596 | while (fndecl) |
1597 | { | |
b1a86a99 JM |
1598 | int need_prefix = 1; |
1599 | ||
3a7587e4 RS |
1600 | /* Group together all the methods for the same operation. |
1601 | These differ in the types of the arguments. */ | |
00fe048c RS |
1602 | for (last = NULL_TREE; |
1603 | fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last)); | |
910ad8de | 1604 | fndecl = DECL_CHAIN (fndecl)) |
00fe048c RS |
1605 | /* Output the name of the field (after overloading), as |
1606 | well as the name of the field before overloading, along | |
1607 | with its parameter list */ | |
1608 | { | |
92643fea MM |
1609 | /* Skip methods that aren't FUNCTION_DECLs. (In C++, these |
1610 | include TEMPLATE_DECLs.) The debugger doesn't know what | |
1611 | to do with such entities anyhow. */ | |
1612 | if (TREE_CODE (fndecl) != FUNCTION_DECL) | |
1613 | continue; | |
1614 | ||
00fe048c RS |
1615 | CONTIN; |
1616 | ||
1617 | last = fndecl; | |
3a7587e4 | 1618 | |
5daf7c0a JM |
1619 | /* Also ignore abstract methods; those are only interesting to |
1620 | the DWARF backends. */ | |
1621 | if (DECL_IGNORED_P (fndecl) || DECL_ABSTRACT (fndecl)) | |
3a7587e4 RS |
1622 | continue; |
1623 | ||
b1a86a99 JM |
1624 | /* Redundantly output the plain name, since that's what gdb |
1625 | expects. */ | |
1626 | if (need_prefix) | |
1627 | { | |
93a27b7b ZW |
1628 | stabstr_I (DECL_NAME (fndecl)); |
1629 | stabstr_S ("::"); | |
b1a86a99 JM |
1630 | need_prefix = 0; |
1631 | } | |
1632 | ||
deda4b76 | 1633 | dbxout_type (TREE_TYPE (fndecl), 0); |
93a27b7b | 1634 | dbxout_type_method_1 (fndecl); |
00fe048c | 1635 | } |
b1a86a99 | 1636 | if (!need_prefix) |
93a27b7b | 1637 | stabstr_C (';'); |
00fe048c RS |
1638 | } |
1639 | } | |
b238f8de PB |
1640 | |
1641 | /* Emit a "range" type specification, which has the form: | |
1642 | "r<index type>;<lower bound>;<upper bound>;". | |
84fb43a1 | 1643 | TYPE is an INTEGER_TYPE, LOW and HIGH are the bounds. */ |
b238f8de PB |
1644 | |
1645 | static void | |
84fb43a1 | 1646 | dbxout_range_type (tree type, tree low, tree high) |
b238f8de | 1647 | { |
93a27b7b | 1648 | stabstr_C ('r'); |
6c73937e | 1649 | if (TREE_TYPE (type)) |
deda4b76 | 1650 | dbxout_type (TREE_TYPE (type), 0); |
d0310c53 | 1651 | else if (TREE_CODE (type) != INTEGER_TYPE) |
deda4b76 | 1652 | dbxout_type (type, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */ |
b238f8de PB |
1653 | else |
1654 | { | |
7ae6c858 PB |
1655 | /* Traditionally, we made sure 'int' was type 1, and builtin types |
1656 | were defined to be sub-ranges of int. Unfortunately, this | |
1657 | does not allow us to distinguish true sub-ranges from integer | |
1658 | types. So, instead we define integer (non-sub-range) types as | |
28144186 JW |
1659 | sub-ranges of themselves. This matters for Chill. If this isn't |
1660 | a subrange type, then we want to define it in terms of itself. | |
1661 | However, in C, this may be an anonymous integer type, and we don't | |
1662 | want to emit debug info referring to it. Just calling | |
1663 | dbxout_type_index won't work anyways, because the type hasn't been | |
1664 | defined yet. We make this work for both cases by checked to see | |
1665 | whether this is a defined type, referring to it if it is, and using | |
1666 | 'int' otherwise. */ | |
1667 | if (TYPE_SYMTAB_ADDRESS (type) != 0) | |
1668 | dbxout_type_index (type); | |
1669 | else | |
1670 | dbxout_type_index (integer_type_node); | |
b238f8de | 1671 | } |
665f2503 | 1672 | |
93a27b7b | 1673 | stabstr_C (';'); |
9541ffee | 1674 | if (low && tree_fits_shwi_p (low)) |
fb2c5c00 | 1675 | { |
84fb43a1 EB |
1676 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
1677 | stabstr_O (low); | |
39d658e3 | 1678 | else |
9439e9a1 | 1679 | stabstr_D (tree_to_shwi (low)); |
fb2c5c00 | 1680 | } |
b238f8de | 1681 | else |
93a27b7b | 1682 | stabstr_C ('0'); |
665f2503 | 1683 | |
93a27b7b | 1684 | stabstr_C (';'); |
9541ffee | 1685 | if (high && tree_fits_shwi_p (high)) |
fb2c5c00 | 1686 | { |
84fb43a1 EB |
1687 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
1688 | stabstr_O (high); | |
39d658e3 | 1689 | else |
9439e9a1 | 1690 | stabstr_D (tree_to_shwi (high)); |
93a27b7b | 1691 | stabstr_C (';'); |
fb2c5c00 | 1692 | } |
b238f8de | 1693 | else |
93a27b7b | 1694 | stabstr_S ("-1;"); |
b238f8de | 1695 | } |
00fe048c | 1696 | \f |
6a08f7b3 | 1697 | |
00fe048c RS |
1698 | /* Output a reference to a type. If the type has not yet been |
1699 | described in the dbx output, output its definition now. | |
1700 | For a type already defined, just refer to its definition | |
1701 | using the type number. | |
1702 | ||
1703 | If FULL is nonzero, and the type has been described only with | |
1704 | a forward-reference, output the definition now. | |
1705 | If FULL is zero in this case, just refer to the forward-reference | |
deda4b76 | 1706 | using the number previously allocated. */ |
00fe048c RS |
1707 | |
1708 | static void | |
7080f735 | 1709 | dbxout_type (tree type, int full) |
00fe048c | 1710 | { |
35571e38 | 1711 | static int anonymous_type_number = 0; |
84fb43a1 | 1712 | tree tem, main_variant, low, high; |
00fe048c | 1713 | |
84fb43a1 EB |
1714 | if (TREE_CODE (type) == INTEGER_TYPE) |
1715 | { | |
1716 | if (TREE_TYPE (type) == 0) | |
1717 | { | |
1718 | low = TYPE_MIN_VALUE (type); | |
1719 | high = TYPE_MAX_VALUE (type); | |
1720 | } | |
1721 | ||
1722 | else if (subrange_type_for_debug_p (type, &low, &high)) | |
1723 | ; | |
1724 | ||
1725 | /* If this is a subtype that should not be emitted as a subrange type, | |
1726 | use the base type. */ | |
1727 | else | |
1728 | { | |
1729 | type = TREE_TYPE (type); | |
1730 | low = TYPE_MIN_VALUE (type); | |
1731 | high = TYPE_MAX_VALUE (type); | |
1732 | } | |
1733 | } | |
1734 | ||
00fe048c RS |
1735 | /* If there was an input error and we don't really have a type, |
1736 | avoid crashing and write something that is at least valid | |
1737 | by assuming `int'. */ | |
1738 | if (type == error_mark_node) | |
1739 | type = integer_type_node; | |
5bfaaeda | 1740 | else |
00fe048c | 1741 | { |
00fe048c RS |
1742 | if (TYPE_NAME (type) |
1743 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
326af3bf | 1744 | && TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type))) |
00fe048c RS |
1745 | full = 0; |
1746 | } | |
1747 | ||
821adc5e JM |
1748 | /* Try to find the "main variant" with the same name. */ |
1749 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1750 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
1751 | main_variant = TREE_TYPE (TYPE_NAME (type)); | |
1752 | else | |
1753 | main_variant = TYPE_MAIN_VARIANT (type); | |
1754 | ||
1755 | /* If we are not using extensions, stabs does not distinguish const and | |
1756 | volatile, so there is no need to make them separate types. */ | |
1757 | if (!use_gnu_debug_info_extensions) | |
1758 | type = main_variant; | |
1759 | ||
00fe048c RS |
1760 | if (TYPE_SYMTAB_ADDRESS (type) == 0) |
1761 | { | |
1762 | /* Type has no dbx number assigned. Assign next available number. */ | |
1763 | TYPE_SYMTAB_ADDRESS (type) = next_type_number++; | |
1764 | ||
1765 | /* Make sure type vector is long enough to record about this type. */ | |
1766 | ||
1767 | if (next_type_number == typevec_len) | |
1768 | { | |
f883e0a7 | 1769 | typevec = GGC_RESIZEVEC (struct typeinfo, typevec, typevec_len * 2); |
703ad42b | 1770 | memset (typevec + typevec_len, 0, typevec_len * sizeof typevec[0]); |
00fe048c RS |
1771 | typevec_len *= 2; |
1772 | } | |
4bcaafd9 ILT |
1773 | |
1774 | #ifdef DBX_USE_BINCL | |
33e9d2aa | 1775 | emit_pending_bincls_if_required (); |
e3da301d MS |
1776 | typevec[TYPE_SYMTAB_ADDRESS (type)].file_number |
1777 | = current_file->file_number; | |
1778 | typevec[TYPE_SYMTAB_ADDRESS (type)].type_number | |
1779 | = current_file->next_type_number++; | |
4bcaafd9 | 1780 | #endif |
00fe048c RS |
1781 | } |
1782 | ||
6a08f7b3 DP |
1783 | if (flag_debug_only_used_symbols) |
1784 | { | |
1785 | if ((TREE_CODE (type) == RECORD_TYPE | |
1786 | || TREE_CODE (type) == UNION_TYPE | |
1787 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
1788 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
1789 | && TYPE_STUB_DECL (type) | |
6615c446 | 1790 | && DECL_P (TYPE_STUB_DECL (type)) |
6a08f7b3 DP |
1791 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (type))) |
1792 | debug_queue_symbol (TYPE_STUB_DECL (type)); | |
1793 | else if (TYPE_NAME (type) | |
1794 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
1795 | debug_queue_symbol (TYPE_NAME (type)); | |
1796 | } | |
7080f735 | 1797 | |
00fe048c | 1798 | /* Output the number of this type, to refer to it. */ |
4bcaafd9 | 1799 | dbxout_type_index (type); |
00fe048c | 1800 | |
b372168c MM |
1801 | #ifdef DBX_TYPE_DEFINED |
1802 | if (DBX_TYPE_DEFINED (type)) | |
1803 | return; | |
1804 | #endif | |
1805 | ||
00fe048c RS |
1806 | /* If this type's definition has been output or is now being output, |
1807 | that is all. */ | |
1808 | ||
4bcaafd9 | 1809 | switch (typevec[TYPE_SYMTAB_ADDRESS (type)].status) |
00fe048c RS |
1810 | { |
1811 | case TYPE_UNSEEN: | |
1812 | break; | |
1813 | case TYPE_XREF: | |
dad0145a RS |
1814 | /* If we have already had a cross reference, |
1815 | and either that's all we want or that's the best we could do, | |
1816 | don't repeat the cross reference. | |
1817 | Sun dbx crashes if we do. */ | |
d0f062fb | 1818 | if (! full || !COMPLETE_TYPE_P (type) |
dad0145a | 1819 | /* No way in DBX fmt to describe a variable size. */ |
cc269bb6 | 1820 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
00fe048c RS |
1821 | return; |
1822 | break; | |
1823 | case TYPE_DEFINED: | |
1824 | return; | |
1825 | } | |
1826 | ||
1827 | #ifdef DBX_NO_XREFS | |
1828 | /* For systems where dbx output does not allow the `=xsNAME:' syntax, | |
1829 | leave the type-number completely undefined rather than output | |
e65f61cf JW |
1830 | a cross-reference. If we have already used GNU debug info extensions, |
1831 | then it is OK to output a cross reference. This is necessary to get | |
1832 | proper C++ debug output. */ | |
1833 | if ((TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE | |
1834 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
1835 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
1836 | && ! use_gnu_debug_info_extensions) | |
e8fca6ce JW |
1837 | /* We must use the same test here as we use twice below when deciding |
1838 | whether to emit a cross-reference. */ | |
1839 | if ((TYPE_NAME (type) != 0 | |
1840 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1841 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
1842 | && !full) | |
d0f062fb | 1843 | || !COMPLETE_TYPE_P (type) |
e8fca6ce | 1844 | /* No way in DBX fmt to describe a variable size. */ |
cc269bb6 | 1845 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
00fe048c | 1846 | { |
4bcaafd9 | 1847 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
00fe048c RS |
1848 | return; |
1849 | } | |
1850 | #endif | |
1851 | ||
1852 | /* Output a definition now. */ | |
93a27b7b | 1853 | stabstr_C ('='); |
00fe048c RS |
1854 | |
1855 | /* Mark it as defined, so that if it is self-referent | |
1856 | we will not get into an infinite recursion of definitions. */ | |
1857 | ||
4bcaafd9 | 1858 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED; |
00fe048c | 1859 | |
821adc5e JM |
1860 | /* If this type is a variant of some other, hand off. Types with |
1861 | different names are usefully distinguished. We only distinguish | |
1862 | cv-qualified types if we're using extensions. */ | |
1863 | if (TYPE_READONLY (type) > TYPE_READONLY (main_variant)) | |
1864 | { | |
93a27b7b | 1865 | stabstr_C ('k'); |
821adc5e JM |
1866 | dbxout_type (build_type_variant (type, 0, TYPE_VOLATILE (type)), 0); |
1867 | return; | |
1868 | } | |
1869 | else if (TYPE_VOLATILE (type) > TYPE_VOLATILE (main_variant)) | |
1870 | { | |
93a27b7b | 1871 | stabstr_C ('B'); |
821adc5e JM |
1872 | dbxout_type (build_type_variant (type, TYPE_READONLY (type), 0), 0); |
1873 | return; | |
1874 | } | |
1875 | else if (main_variant != TYPE_MAIN_VARIANT (type)) | |
1876 | { | |
6a08f7b3 DP |
1877 | if (flag_debug_only_used_symbols) |
1878 | { | |
1879 | tree orig_type = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
1880 | ||
7080f735 | 1881 | if ((TREE_CODE (orig_type) == RECORD_TYPE |
6a08f7b3 DP |
1882 | || TREE_CODE (orig_type) == UNION_TYPE |
1883 | || TREE_CODE (orig_type) == QUAL_UNION_TYPE | |
1884 | || TREE_CODE (orig_type) == ENUMERAL_TYPE) | |
1885 | && TYPE_STUB_DECL (orig_type) | |
1886 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (orig_type))) | |
1887 | debug_queue_symbol (TYPE_STUB_DECL (orig_type)); | |
1888 | } | |
821adc5e | 1889 | /* 'type' is a typedef; output the type it refers to. */ |
deda4b76 | 1890 | dbxout_type (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), 0); |
79afd906 PB |
1891 | return; |
1892 | } | |
821adc5e | 1893 | /* else continue. */ |
79afd906 | 1894 | |
00fe048c RS |
1895 | switch (TREE_CODE (type)) |
1896 | { | |
1897 | case VOID_TYPE: | |
1e85e720 | 1898 | case NULLPTR_TYPE: |
00fe048c | 1899 | case LANG_TYPE: |
454ff5cb | 1900 | /* For a void type, just define it as itself; i.e., "5=5". |
00fe048c RS |
1901 | This makes us consider it defined |
1902 | without saying what it is. The debugger will make it | |
1903 | a void type when the reference is seen, and nothing will | |
1904 | ever override that default. */ | |
4bcaafd9 | 1905 | dbxout_type_index (type); |
00fe048c RS |
1906 | break; |
1907 | ||
1908 | case INTEGER_TYPE: | |
8df83eae | 1909 | if (type == char_type_node && ! TYPE_UNSIGNED (type)) |
4bcaafd9 ILT |
1910 | { |
1911 | /* Output the type `char' as a subrange of itself! | |
1912 | I don't understand this definition, just copied it | |
1913 | from the output of pcc. | |
1914 | This used to use `r2' explicitly and we used to | |
1915 | take care to make sure that `char' was type number 2. */ | |
93a27b7b | 1916 | stabstr_C ('r'); |
4bcaafd9 | 1917 | dbxout_type_index (type); |
93a27b7b | 1918 | stabstr_S (";0;127;"); |
4bcaafd9 | 1919 | } |
14a774a9 RK |
1920 | |
1921 | /* If this is a subtype of another integer type, always prefer to | |
1922 | write it as a subtype. */ | |
1923 | else if (TREE_TYPE (type) != 0 | |
3342b6fd | 1924 | && TREE_CODE (TREE_TYPE (type)) == INTEGER_TYPE) |
3a538a66 | 1925 | { |
ea619b46 JB |
1926 | /* If the size is non-standard, say what it is if we can use |
1927 | GDB extensions. */ | |
1928 | ||
1929 | if (use_gnu_debug_info_extensions | |
1930 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
1931 | { | |
93a27b7b ZW |
1932 | stabstr_S ("@s"); |
1933 | stabstr_D (TYPE_PRECISION (type)); | |
1934 | stabstr_C (';'); | |
ea619b46 JB |
1935 | } |
1936 | ||
84fb43a1 | 1937 | dbxout_range_type (type, low, high); |
3a538a66 | 1938 | } |
14a774a9 RK |
1939 | |
1940 | else | |
3a538a66 | 1941 | { |
14a774a9 RK |
1942 | /* If the size is non-standard, say what it is if we can use |
1943 | GDB extensions. */ | |
1944 | ||
1945 | if (use_gnu_debug_info_extensions | |
1946 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
02e3f1a8 | 1947 | { |
93a27b7b ZW |
1948 | stabstr_S ("@s"); |
1949 | stabstr_D (TYPE_PRECISION (type)); | |
1950 | stabstr_C (';'); | |
02e3f1a8 | 1951 | } |
14a774a9 | 1952 | |
84fb43a1 | 1953 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
14a774a9 | 1954 | { |
93a27b7b | 1955 | stabstr_C ('r'); |
08b0f5f9 JB |
1956 | |
1957 | /* If this type derives from another type, output type index of | |
1958 | parent type. This is particularly important when parent type | |
1959 | is an enumerated type, because not generating the parent type | |
1960 | index would transform the definition of this enumerated type | |
1961 | into a plain unsigned type. */ | |
1962 | if (TREE_TYPE (type) != 0) | |
1963 | dbxout_type_index (TREE_TYPE (type)); | |
1964 | else | |
1965 | dbxout_type_index (type); | |
1966 | ||
93a27b7b | 1967 | stabstr_C (';'); |
84fb43a1 | 1968 | stabstr_O (low); |
93a27b7b | 1969 | stabstr_C (';'); |
84fb43a1 | 1970 | stabstr_O (high); |
93a27b7b | 1971 | stabstr_C (';'); |
14a774a9 RK |
1972 | } |
1973 | ||
1974 | else | |
1975 | /* Output other integer types as subranges of `int'. */ | |
84fb43a1 | 1976 | dbxout_range_type (type, low, high); |
3a538a66 | 1977 | } |
14a774a9 | 1978 | |
00fe048c RS |
1979 | break; |
1980 | ||
1981 | case REAL_TYPE: | |
325217ed | 1982 | case FIXED_POINT_TYPE: |
00fe048c RS |
1983 | /* This used to say `r1' and we used to take care |
1984 | to make sure that `int' was type number 1. */ | |
93a27b7b | 1985 | stabstr_C ('r'); |
4bcaafd9 | 1986 | dbxout_type_index (integer_type_node); |
93a27b7b ZW |
1987 | stabstr_C (';'); |
1988 | stabstr_D (int_size_in_bytes (type)); | |
1989 | stabstr_S (";0;"); | |
00fe048c RS |
1990 | break; |
1991 | ||
72db60c6 PB |
1992 | case BOOLEAN_TYPE: |
1993 | if (use_gnu_debug_info_extensions) | |
e003ca80 | 1994 | { |
93a27b7b ZW |
1995 | stabstr_S ("@s"); |
1996 | stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type)); | |
1997 | stabstr_S (";-16;"); | |
e003ca80 | 1998 | } |
72db60c6 | 1999 | else /* Define as enumeral type (False, True) */ |
93a27b7b | 2000 | stabstr_S ("eFalse:0,True:1,;"); |
15a5b8a2 RS |
2001 | break; |
2002 | ||
15a5b8a2 | 2003 | case COMPLEX_TYPE: |
3a7cbb76 ZW |
2004 | /* Differs from the REAL_TYPE by its new data type number. |
2005 | R3 is NF_COMPLEX. We don't try to use any of the other NF_* | |
2006 | codes since gdb doesn't care anyway. */ | |
15a5b8a2 RS |
2007 | |
2008 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) | |
2009 | { | |
93a27b7b ZW |
2010 | stabstr_S ("R3;"); |
2011 | stabstr_D (2 * int_size_in_bytes (TREE_TYPE (type))); | |
2012 | stabstr_S (";0;"); | |
47cc012b RS |
2013 | } |
2014 | else | |
2015 | { | |
2016 | /* Output a complex integer type as a structure, | |
2017 | pending some other way to do it. */ | |
93a27b7b ZW |
2018 | stabstr_C ('s'); |
2019 | stabstr_D (int_size_in_bytes (type)); | |
02e3f1a8 | 2020 | |
93a27b7b | 2021 | stabstr_S ("real:"); |
deda4b76 | 2022 | dbxout_type (TREE_TYPE (type), 0); |
93a27b7b ZW |
2023 | stabstr_S (",0,"); |
2024 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2025 | ||
2026 | stabstr_S (";imag:"); | |
deda4b76 | 2027 | dbxout_type (TREE_TYPE (type), 0); |
93a27b7b ZW |
2028 | stabstr_C (','); |
2029 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2030 | stabstr_C (','); | |
2031 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2032 | stabstr_S (";;"); | |
47cc012b | 2033 | } |
15a5b8a2 RS |
2034 | break; |
2035 | ||
00fe048c | 2036 | case ARRAY_TYPE: |
202fe2d6 DB |
2037 | /* Make arrays of packed bits look like bitstrings for chill. */ |
2038 | if (TYPE_PACKED (type) && use_gnu_debug_info_extensions) | |
2039 | { | |
93a27b7b ZW |
2040 | stabstr_S ("@s"); |
2041 | stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type)); | |
2042 | stabstr_S (";@S;S"); | |
deda4b76 | 2043 | dbxout_type (TYPE_DOMAIN (type), 0); |
202fe2d6 DB |
2044 | break; |
2045 | } | |
02e3f1a8 | 2046 | |
00fe048c RS |
2047 | /* Output "a" followed by a range type definition |
2048 | for the index type of the array | |
2049 | followed by a reference to the target-type. | |
b238f8de | 2050 | ar1;0;N;M for a C array of type M and size N+1. */ |
4042d440 | 2051 | /* Check if a character string type, which in Chill is |
0f41302f | 2052 | different from an array of characters. */ |
4042d440 PB |
2053 | if (TYPE_STRING_FLAG (type) && use_gnu_debug_info_extensions) |
2054 | { | |
93a27b7b | 2055 | stabstr_S ("@S;"); |
4042d440 | 2056 | } |
b238f8de PB |
2057 | tem = TYPE_DOMAIN (type); |
2058 | if (tem == NULL) | |
4bcaafd9 | 2059 | { |
93a27b7b | 2060 | stabstr_S ("ar"); |
4bcaafd9 | 2061 | dbxout_type_index (integer_type_node); |
93a27b7b | 2062 | stabstr_S (";0;-1;"); |
4bcaafd9 | 2063 | } |
b238f8de PB |
2064 | else |
2065 | { | |
93a27b7b | 2066 | stabstr_C ('a'); |
84fb43a1 | 2067 | dbxout_range_type (tem, TYPE_MIN_VALUE (tem), TYPE_MAX_VALUE (tem)); |
b238f8de | 2068 | } |
02e3f1a8 | 2069 | |
deda4b76 | 2070 | dbxout_type (TREE_TYPE (type), 0); |
00fe048c RS |
2071 | break; |
2072 | ||
cf6a4097 RG |
2073 | case VECTOR_TYPE: |
2074 | /* Make vectors look like an array. */ | |
2075 | if (use_gnu_debug_info_extensions) | |
2076 | stabstr_S ("@V;"); | |
2077 | ||
2078 | /* Output "a" followed by a range type definition | |
2079 | for the index type of the array | |
2080 | followed by a reference to the target-type. | |
2081 | ar1;0;N;M for a C array of type M and size N+1. */ | |
2082 | stabstr_C ('a'); | |
2083 | dbxout_range_type (integer_type_node, size_zero_node, | |
2084 | size_int (TYPE_VECTOR_SUBPARTS (type) - 1)); | |
2085 | ||
2086 | dbxout_type (TREE_TYPE (type), 0); | |
2087 | break; | |
2088 | ||
00fe048c RS |
2089 | case RECORD_TYPE: |
2090 | case UNION_TYPE: | |
c1b98a95 | 2091 | case QUAL_UNION_TYPE: |
00fe048c | 2092 | { |
fa743e8c | 2093 | tree binfo = TYPE_BINFO (type); |
00fe048c | 2094 | |
e8fca6ce JW |
2095 | /* Output a structure type. We must use the same test here as we |
2096 | use in the DBX_NO_XREFS case above. */ | |
b372168c MM |
2097 | if ((TYPE_NAME (type) != 0 |
2098 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
2099 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
2100 | && !full) | |
d0f062fb | 2101 | || !COMPLETE_TYPE_P (type) |
3a7587e4 | 2102 | /* No way in DBX fmt to describe a variable size. */ |
cc269bb6 | 2103 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
00fe048c RS |
2104 | { |
2105 | /* If the type is just a cross reference, output one | |
2106 | and mark the type as partially described. | |
2107 | If it later becomes defined, we will output | |
2108 | its real definition. | |
2109 | If the type has a name, don't nest its definition within | |
2110 | another type's definition; instead, output an xref | |
2111 | and let the definition come when the name is defined. */ | |
93a27b7b | 2112 | stabstr_S ((TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu"); |
9dba4b55 PC |
2113 | if (TYPE_IDENTIFIER (type)) |
2114 | { | |
2115 | /* Note that the C frontend creates for anonymous variable | |
2116 | length records/unions TYPE_NAME with DECL_NAME NULL. */ | |
2117 | dbxout_type_name (type); | |
2118 | } | |
35571e38 | 2119 | else |
02e3f1a8 | 2120 | { |
93a27b7b ZW |
2121 | stabstr_S ("$$"); |
2122 | stabstr_D (anonymous_type_number++); | |
02e3f1a8 RK |
2123 | } |
2124 | ||
93a27b7b | 2125 | stabstr_C (':'); |
4bcaafd9 | 2126 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
00fe048c RS |
2127 | break; |
2128 | } | |
00fe048c | 2129 | |
00fe048c | 2130 | /* Identify record or union, and print its size. */ |
93a27b7b ZW |
2131 | stabstr_C ((TREE_CODE (type) == RECORD_TYPE) ? 's' : 'u'); |
2132 | stabstr_D (int_size_in_bytes (type)); | |
00fe048c | 2133 | |
fa743e8c | 2134 | if (binfo) |
00fe048c | 2135 | { |
fa743e8c NS |
2136 | int i; |
2137 | tree child; | |
9771b263 | 2138 | vec<tree, va_gc> *accesses = BINFO_BASE_ACCESSES (binfo); |
b8698a0f | 2139 | |
196cedd0 | 2140 | if (use_gnu_debug_info_extensions) |
00fe048c | 2141 | { |
fa743e8c NS |
2142 | if (BINFO_N_BASE_BINFOS (binfo)) |
2143 | { | |
93a27b7b ZW |
2144 | stabstr_C ('!'); |
2145 | stabstr_U (BINFO_N_BASE_BINFOS (binfo)); | |
2146 | stabstr_C (','); | |
fa743e8c | 2147 | } |
00fe048c | 2148 | } |
fa743e8c | 2149 | for (i = 0; BINFO_BASE_ITERATE (binfo, i, child); i++) |
00fe048c | 2150 | { |
9771b263 | 2151 | tree access = (accesses ? (*accesses)[i] : access_public_node); |
fa743e8c NS |
2152 | |
2153 | if (use_gnu_debug_info_extensions) | |
2154 | { | |
93a27b7b ZW |
2155 | stabstr_C (BINFO_VIRTUAL_P (child) ? '1' : '0'); |
2156 | stabstr_C (access == access_public_node ? '2' : | |
2157 | access == access_protected_node | |
2158 | ? '1' :'0'); | |
fa743e8c | 2159 | if (BINFO_VIRTUAL_P (child) |
f37d7c60 DP |
2160 | && (strcmp (lang_hooks.name, "GNU C++") == 0 |
2161 | || strcmp (lang_hooks.name, "GNU Objective-C++") == 0)) | |
fa743e8c NS |
2162 | /* For a virtual base, print the (negative) |
2163 | offset within the vtable where we must look | |
2164 | to find the necessary adjustment. */ | |
93a27b7b | 2165 | stabstr_D |
9439e9a1 | 2166 | (tree_to_shwi (BINFO_VPTR_FIELD (child)) |
fa743e8c NS |
2167 | * BITS_PER_UNIT); |
2168 | else | |
9439e9a1 | 2169 | stabstr_D (tree_to_shwi (BINFO_OFFSET (child)) |
93a27b7b ZW |
2170 | * BITS_PER_UNIT); |
2171 | stabstr_C (','); | |
fa743e8c | 2172 | dbxout_type (BINFO_TYPE (child), 0); |
93a27b7b | 2173 | stabstr_C (';'); |
fa743e8c NS |
2174 | } |
2175 | else | |
2176 | { | |
2177 | /* Print out the base class information with | |
2178 | fields which have the same names at the types | |
2179 | they hold. */ | |
2180 | dbxout_type_name (BINFO_TYPE (child)); | |
93a27b7b | 2181 | stabstr_C (':'); |
fa743e8c | 2182 | dbxout_type (BINFO_TYPE (child), full); |
93a27b7b | 2183 | stabstr_C (','); |
9439e9a1 | 2184 | stabstr_D (tree_to_shwi (BINFO_OFFSET (child)) |
93a27b7b ZW |
2185 | * BITS_PER_UNIT); |
2186 | stabstr_C (','); | |
2187 | stabstr_D | |
9439e9a1 | 2188 | (tree_to_shwi (TYPE_SIZE (BINFO_TYPE (child))) |
fa743e8c | 2189 | * BITS_PER_UNIT); |
93a27b7b | 2190 | stabstr_C (';'); |
fa743e8c | 2191 | } |
00fe048c RS |
2192 | } |
2193 | } | |
2194 | } | |
2195 | ||
00fe048c RS |
2196 | /* Write out the field declarations. */ |
2197 | dbxout_type_fields (type); | |
196cedd0 | 2198 | if (use_gnu_debug_info_extensions && TYPE_METHODS (type) != NULL_TREE) |
00fe048c | 2199 | { |
00fe048c RS |
2200 | dbxout_type_methods (type); |
2201 | } | |
665f2503 | 2202 | |
93a27b7b | 2203 | stabstr_C (';'); |
00fe048c | 2204 | |
196cedd0 | 2205 | if (use_gnu_debug_info_extensions && TREE_CODE (type) == RECORD_TYPE |
00fe048c RS |
2206 | /* Avoid the ~ if we don't really need it--it confuses dbx. */ |
2207 | && TYPE_VFIELD (type)) | |
2208 | { | |
00fe048c | 2209 | |
00fe048c RS |
2210 | /* We need to write out info about what field this class |
2211 | uses as its "main" vtable pointer field, because if this | |
2212 | field is inherited from a base class, GDB cannot necessarily | |
2213 | figure out which field it's using in time. */ | |
93a27b7b ZW |
2214 | stabstr_S ("~%"); |
2215 | dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0); | |
2216 | stabstr_C (';'); | |
00fe048c RS |
2217 | } |
2218 | break; | |
2219 | ||
2220 | case ENUMERAL_TYPE: | |
e8fca6ce JW |
2221 | /* We must use the same test here as we use in the DBX_NO_XREFS case |
2222 | above. We simplify it a bit since an enum will never have a variable | |
2223 | size. */ | |
2224 | if ((TYPE_NAME (type) != 0 | |
2225 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
2226 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
2227 | && !full) | |
d0f062fb | 2228 | || !COMPLETE_TYPE_P (type)) |
00fe048c | 2229 | { |
93a27b7b | 2230 | stabstr_S ("xe"); |
00fe048c | 2231 | dbxout_type_name (type); |
4bcaafd9 | 2232 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
93a27b7b | 2233 | stabstr_C (':'); |
00fe048c RS |
2234 | return; |
2235 | } | |
71b54b53 PB |
2236 | if (use_gnu_debug_info_extensions |
2237 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
02e3f1a8 | 2238 | { |
93a27b7b ZW |
2239 | stabstr_S ("@s"); |
2240 | stabstr_D (TYPE_PRECISION (type)); | |
2241 | stabstr_C (';'); | |
02e3f1a8 RK |
2242 | } |
2243 | ||
93a27b7b | 2244 | stabstr_C ('e'); |
00fe048c RS |
2245 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) |
2246 | { | |
adf2edec DG |
2247 | tree value = TREE_VALUE (tem); |
2248 | ||
93a27b7b ZW |
2249 | stabstr_I (TREE_PURPOSE (tem)); |
2250 | stabstr_C (':'); | |
2251 | ||
adf2edec DG |
2252 | if (TREE_CODE (value) == CONST_DECL) |
2253 | value = DECL_INITIAL (value); | |
2254 | ||
807e902e | 2255 | if (cst_and_fits_in_hwi (value)) |
adf2edec | 2256 | stabstr_D (TREE_INT_CST_LOW (value)); |
71f15013 | 2257 | else |
adf2edec | 2258 | stabstr_O (value); |
02e3f1a8 | 2259 | |
93a27b7b | 2260 | stabstr_C (','); |
00fe048c | 2261 | if (TREE_CHAIN (tem) != 0) |
02e3f1a8 | 2262 | CONTIN; |
00fe048c | 2263 | } |
02e3f1a8 | 2264 | |
93a27b7b | 2265 | stabstr_C (';'); |
00fe048c RS |
2266 | break; |
2267 | ||
2268 | case POINTER_TYPE: | |
93a27b7b | 2269 | stabstr_C ('*'); |
deda4b76 | 2270 | dbxout_type (TREE_TYPE (type), 0); |
00fe048c RS |
2271 | break; |
2272 | ||
2273 | case METHOD_TYPE: | |
196cedd0 | 2274 | if (use_gnu_debug_info_extensions) |
00fe048c | 2275 | { |
93a27b7b | 2276 | stabstr_C ('#'); |
deda4b76 JM |
2277 | |
2278 | /* Write the argument types out longhand. */ | |
2279 | dbxout_type (TYPE_METHOD_BASETYPE (type), 0); | |
93a27b7b | 2280 | stabstr_C (','); |
deda4b76 JM |
2281 | dbxout_type (TREE_TYPE (type), 0); |
2282 | dbxout_args (TYPE_ARG_TYPES (type)); | |
93a27b7b | 2283 | stabstr_C (';'); |
00fe048c RS |
2284 | } |
2285 | else | |
02e3f1a8 RK |
2286 | /* Treat it as a function type. */ |
2287 | dbxout_type (TREE_TYPE (type), 0); | |
00fe048c RS |
2288 | break; |
2289 | ||
2290 | case OFFSET_TYPE: | |
196cedd0 | 2291 | if (use_gnu_debug_info_extensions) |
00fe048c | 2292 | { |
93a27b7b | 2293 | stabstr_C ('@'); |
deda4b76 | 2294 | dbxout_type (TYPE_OFFSET_BASETYPE (type), 0); |
93a27b7b | 2295 | stabstr_C (','); |
deda4b76 | 2296 | dbxout_type (TREE_TYPE (type), 0); |
00fe048c RS |
2297 | } |
2298 | else | |
02e3f1a8 RK |
2299 | /* Should print as an int, because it is really just an offset. */ |
2300 | dbxout_type (integer_type_node, 0); | |
00fe048c RS |
2301 | break; |
2302 | ||
2303 | case REFERENCE_TYPE: | |
196cedd0 | 2304 | if (use_gnu_debug_info_extensions) |
93a27b7b | 2305 | { |
93a27b7b ZW |
2306 | stabstr_C ('&'); |
2307 | } | |
2308 | else | |
2309 | stabstr_C ('*'); | |
deda4b76 | 2310 | dbxout_type (TREE_TYPE (type), 0); |
00fe048c RS |
2311 | break; |
2312 | ||
2313 | case FUNCTION_TYPE: | |
93a27b7b | 2314 | stabstr_C ('f'); |
deda4b76 | 2315 | dbxout_type (TREE_TYPE (type), 0); |
00fe048c RS |
2316 | break; |
2317 | ||
2318 | default: | |
ced3f397 | 2319 | gcc_unreachable (); |
00fe048c RS |
2320 | } |
2321 | } | |
2322 | ||
6356f892 | 2323 | /* Return nonzero if the given type represents an integer whose bounds |
39d658e3 JB |
2324 | should be printed in octal format. */ |
2325 | ||
2326 | static bool | |
84fb43a1 | 2327 | print_int_cst_bounds_in_octal_p (tree type, tree low, tree high) |
39d658e3 JB |
2328 | { |
2329 | /* If we can use GDB extensions and the size is wider than a long | |
2330 | (the size used by GDB to read them) or we may have trouble writing | |
2331 | the bounds the usual way, write them in octal. Note the test is for | |
2332 | the *target's* size of "long", not that of the host. The host test | |
2333 | is just to make sure we can write it out in case the host wide int | |
2334 | is narrower than the target "long". | |
7080f735 | 2335 | |
39d658e3 JB |
2336 | For unsigned types, we use octal if they are the same size or larger. |
2337 | This is because we print the bounds as signed decimal, and hence they | |
2338 | can't span same size unsigned types. */ | |
2339 | ||
2340 | if (use_gnu_debug_info_extensions | |
84fb43a1 EB |
2341 | && low && TREE_CODE (low) == INTEGER_CST |
2342 | && high && TREE_CODE (high) == INTEGER_CST | |
39d658e3 JB |
2343 | && (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node) |
2344 | || ((TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node)) | |
8df83eae | 2345 | && TYPE_UNSIGNED (type)) |
39d658e3 JB |
2346 | || TYPE_PRECISION (type) > HOST_BITS_PER_WIDE_INT |
2347 | || (TYPE_PRECISION (type) == HOST_BITS_PER_WIDE_INT | |
8df83eae | 2348 | && TYPE_UNSIGNED (type)))) |
39d658e3 JB |
2349 | return TRUE; |
2350 | else | |
2351 | return FALSE; | |
2352 | } | |
2353 | ||
00fe048c RS |
2354 | /* Output the name of type TYPE, with no punctuation. |
2355 | Such names can be set up either by typedef declarations | |
2356 | or by struct, enum and union tags. */ | |
2357 | ||
2358 | static void | |
7080f735 | 2359 | dbxout_type_name (tree type) |
00fe048c | 2360 | { |
ced3f397 | 2361 | tree t = TYPE_NAME (type); |
b8698a0f | 2362 | |
ced3f397 NS |
2363 | gcc_assert (t); |
2364 | switch (TREE_CODE (t)) | |
00fe048c | 2365 | { |
ced3f397 NS |
2366 | case IDENTIFIER_NODE: |
2367 | break; | |
2368 | case TYPE_DECL: | |
2369 | t = DECL_NAME (t); | |
2370 | break; | |
2371 | default: | |
2372 | gcc_unreachable (); | |
00fe048c | 2373 | } |
00fe048c | 2374 | |
93a27b7b | 2375 | stabstr_I (t); |
00fe048c | 2376 | } |
b0a93386 KB |
2377 | |
2378 | /* Output leading leading struct or class names needed for qualifying | |
2379 | type whose scope is limited to a struct or class. */ | |
2380 | ||
2381 | static void | |
7080f735 | 2382 | dbxout_class_name_qualifiers (tree decl) |
b0a93386 KB |
2383 | { |
2384 | tree context = decl_type_context (decl); | |
2385 | ||
7080f735 | 2386 | if (context != NULL_TREE |
c3284718 | 2387 | && TREE_CODE (context) == RECORD_TYPE |
7080f735 | 2388 | && TYPE_NAME (context) != 0 |
b0a93386 KB |
2389 | && (TREE_CODE (TYPE_NAME (context)) == IDENTIFIER_NODE |
2390 | || (DECL_NAME (TYPE_NAME (context)) != 0))) | |
2391 | { | |
2392 | tree name = TYPE_NAME (context); | |
2393 | ||
2394 | if (TREE_CODE (name) == TYPE_DECL) | |
2395 | { | |
2396 | dbxout_class_name_qualifiers (name); | |
2397 | name = DECL_NAME (name); | |
2398 | } | |
93a27b7b ZW |
2399 | stabstr_I (name); |
2400 | stabstr_S ("::"); | |
b0a93386 KB |
2401 | } |
2402 | } | |
00fe048c | 2403 | \f |
4e0e2698 RH |
2404 | /* This is a specialized subset of expand_expr for use by dbxout_symbol in |
2405 | evaluating DECL_VALUE_EXPR. In particular, we stop if we find decls that | |
fa10beec | 2406 | haven't been expanded, or if the expression is getting so complex we won't |
4e0e2698 RH |
2407 | be able to represent it in stabs anyway. Returns NULL on failure. */ |
2408 | ||
2409 | static rtx | |
2410 | dbxout_expand_expr (tree expr) | |
2411 | { | |
2412 | switch (TREE_CODE (expr)) | |
2413 | { | |
2414 | case VAR_DECL: | |
fcb9237b JW |
2415 | /* We can't handle emulated tls variables, because the address is an |
2416 | offset to the return value of __emutls_get_address, and there is no | |
2417 | way to express that in stabs. Also, there are name mangling issues | |
2418 | here. We end up with references to undefined symbols if we don't | |
2419 | disable debug info for these variables. */ | |
2420 | if (!targetm.have_tls && DECL_THREAD_LOCAL_P (expr)) | |
2421 | return NULL; | |
9166988f JJ |
2422 | if (TREE_STATIC (expr) |
2423 | && !TREE_ASM_WRITTEN (expr) | |
2424 | && !DECL_HAS_VALUE_EXPR_P (expr) | |
2425 | && !TREE_PUBLIC (expr) | |
2426 | && DECL_RTL_SET_P (expr) | |
2427 | && MEM_P (DECL_RTL (expr))) | |
2428 | { | |
2429 | /* If this is a var that might not be actually output, | |
2430 | return NULL, otherwise stabs might reference an undefined | |
2431 | symbol. */ | |
9041d2e6 | 2432 | varpool_node *node = varpool_node::get (expr); |
67348ccc | 2433 | if (!node || !node->definition) |
9166988f JJ |
2434 | return NULL; |
2435 | } | |
fcb9237b JW |
2436 | /* FALLTHRU */ |
2437 | ||
4e0e2698 | 2438 | case PARM_DECL: |
8dcfef8f | 2439 | case RESULT_DECL: |
4e0e2698 RH |
2440 | if (DECL_HAS_VALUE_EXPR_P (expr)) |
2441 | return dbxout_expand_expr (DECL_VALUE_EXPR (expr)); | |
2442 | /* FALLTHRU */ | |
2443 | ||
2444 | case CONST_DECL: | |
4e0e2698 RH |
2445 | return DECL_RTL_IF_SET (expr); |
2446 | ||
2447 | case INTEGER_CST: | |
2448 | return expand_expr (expr, NULL_RTX, VOIDmode, EXPAND_INITIALIZER); | |
2449 | ||
2450 | case COMPONENT_REF: | |
2451 | case ARRAY_REF: | |
2452 | case ARRAY_RANGE_REF: | |
2453 | case BIT_FIELD_REF: | |
2454 | { | |
2455 | enum machine_mode mode; | |
2456 | HOST_WIDE_INT bitsize, bitpos; | |
2457 | tree offset, tem; | |
2458 | int volatilep = 0, unsignedp = 0; | |
2459 | rtx x; | |
2460 | ||
2461 | tem = get_inner_reference (expr, &bitsize, &bitpos, &offset, | |
b3ecff82 | 2462 | &mode, &unsignedp, &volatilep, true); |
4e0e2698 RH |
2463 | |
2464 | x = dbxout_expand_expr (tem); | |
2465 | if (x == NULL || !MEM_P (x)) | |
2466 | return NULL; | |
2467 | if (offset != NULL) | |
2468 | { | |
9541ffee | 2469 | if (!tree_fits_shwi_p (offset)) |
4e0e2698 | 2470 | return NULL; |
9439e9a1 | 2471 | x = adjust_address_nv (x, mode, tree_to_shwi (offset)); |
4e0e2698 RH |
2472 | } |
2473 | if (bitpos != 0) | |
2474 | x = adjust_address_nv (x, mode, bitpos / BITS_PER_UNIT); | |
2475 | ||
2476 | return x; | |
2477 | } | |
2478 | ||
2479 | default: | |
2480 | return NULL; | |
2481 | } | |
2482 | } | |
2483 | ||
f629051e DJ |
2484 | /* Helper function for output_used_types. Queue one entry from the |
2485 | used types hash to be output. */ | |
2486 | ||
b086d530 TS |
2487 | bool |
2488 | output_used_types_helper (tree const &type, vec<tree> *types_p) | |
f629051e | 2489 | { |
f629051e DJ |
2490 | if ((TREE_CODE (type) == RECORD_TYPE |
2491 | || TREE_CODE (type) == UNION_TYPE | |
2492 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
2493 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
2494 | && TYPE_STUB_DECL (type) | |
2495 | && DECL_P (TYPE_STUB_DECL (type)) | |
2496 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (type))) | |
9771b263 | 2497 | types_p->quick_push (TYPE_STUB_DECL (type)); |
f629051e DJ |
2498 | else if (TYPE_NAME (type) |
2499 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
9771b263 | 2500 | types_p->quick_push (TYPE_NAME (type)); |
f629051e | 2501 | |
b086d530 | 2502 | return true; |
f629051e DJ |
2503 | } |
2504 | ||
88c4be5e DJ |
2505 | /* This is a qsort callback which sorts types and declarations into a |
2506 | predictable order (types, then declarations, sorted by UID | |
2507 | within). */ | |
2508 | ||
2daec0f0 DJ |
2509 | static int |
2510 | output_types_sort (const void *pa, const void *pb) | |
2511 | { | |
2512 | const tree lhs = *((const tree *)pa); | |
2513 | const tree rhs = *((const tree *)pb); | |
2514 | ||
2515 | if (TYPE_P (lhs)) | |
2516 | { | |
2517 | if (TYPE_P (rhs)) | |
2518 | return TYPE_UID (lhs) - TYPE_UID (rhs); | |
2519 | else | |
2520 | return 1; | |
2521 | } | |
2522 | else | |
2523 | { | |
2524 | if (TYPE_P (rhs)) | |
2525 | return -1; | |
2526 | else | |
2527 | return DECL_UID (lhs) - DECL_UID (rhs); | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | ||
f629051e DJ |
2532 | /* Force all types used by this function to be output in debug |
2533 | information. */ | |
88c4be5e | 2534 | |
f629051e DJ |
2535 | static void |
2536 | output_used_types (void) | |
2537 | { | |
2538 | if (cfun && cfun->used_types_hash) | |
2daec0f0 | 2539 | { |
9771b263 | 2540 | vec<tree> types; |
2daec0f0 DJ |
2541 | int i; |
2542 | tree type; | |
2543 | ||
b086d530 TS |
2544 | types.create (cfun->used_types_hash->elements ()); |
2545 | cfun->used_types_hash->traverse<vec<tree> *, output_used_types_helper> | |
2546 | (&types); | |
2daec0f0 DJ |
2547 | |
2548 | /* Sort by UID to prevent dependence on hash table ordering. */ | |
9771b263 | 2549 | types.qsort (output_types_sort); |
2daec0f0 | 2550 | |
9771b263 | 2551 | FOR_EACH_VEC_ELT (types, i, type) |
2daec0f0 | 2552 | debug_queue_symbol (type); |
88c4be5e | 2553 | |
9771b263 | 2554 | types.release (); |
2daec0f0 | 2555 | } |
f629051e DJ |
2556 | } |
2557 | ||
00fe048c RS |
2558 | /* Output a .stabs for the symbol defined by DECL, |
2559 | which must be a ..._DECL node in the normal namespace. | |
2560 | It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL. | |
00262c8a ML |
2561 | LOCAL is nonzero if the scope is less than the entire file. |
2562 | Return 1 if a stabs might have been emitted. */ | |
00fe048c | 2563 | |
00262c8a | 2564 | int |
7080f735 | 2565 | dbxout_symbol (tree decl, int local ATTRIBUTE_UNUSED) |
00fe048c | 2566 | { |
00fe048c RS |
2567 | tree type = TREE_TYPE (decl); |
2568 | tree context = NULL_TREE; | |
00262c8a | 2569 | int result = 0; |
9bfa80fb | 2570 | rtx decl_rtl; |
00fe048c | 2571 | |
6a08f7b3 DP |
2572 | /* "Intercept" dbxout_symbol() calls like we do all debug_hooks. */ |
2573 | ++debug_nesting; | |
2574 | ||
00fe048c RS |
2575 | /* Ignore nameless syms, but don't ignore type tags. */ |
2576 | ||
2577 | if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL) | |
2578 | || DECL_IGNORED_P (decl)) | |
6a08f7b3 DP |
2579 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
2580 | ||
e0bb17a8 | 2581 | /* If we are to generate only the symbols actually used then such |
aabcd309 | 2582 | symbol nodes are flagged with TREE_USED. Ignore any that |
fa10beec | 2583 | aren't flagged as TREE_USED. */ |
7080f735 | 2584 | |
21d13d83 ZW |
2585 | if (flag_debug_only_used_symbols |
2586 | && (!TREE_USED (decl) | |
2587 | && (TREE_CODE (decl) != VAR_DECL || !DECL_INITIAL (decl)))) | |
2588 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2589 | ||
2590 | /* If dbxout_init has not yet run, queue this symbol for later. */ | |
2591 | if (!typevec) | |
2592 | { | |
2593 | preinit_symbols = tree_cons (0, decl, preinit_symbols); | |
2594 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2595 | } | |
2596 | ||
6a08f7b3 DP |
2597 | if (flag_debug_only_used_symbols) |
2598 | { | |
2599 | tree t; | |
2600 | ||
6a08f7b3 DP |
2601 | /* We now have a used symbol. We need to generate the info for |
2602 | the symbol's type in addition to the symbol itself. These | |
2603 | type symbols are queued to be generated after were done with | |
93a27b7b ZW |
2604 | the symbol itself (otherwise they would fight over the |
2605 | stabstr obstack). | |
6a08f7b3 DP |
2606 | |
2607 | Note, because the TREE_TYPE(type) might be something like a | |
2608 | pointer to a named type we need to look for the first name | |
2609 | we see following the TREE_TYPE chain. */ | |
2610 | ||
7080f735 | 2611 | t = type; |
6a08f7b3 DP |
2612 | while (POINTER_TYPE_P (t)) |
2613 | t = TREE_TYPE (t); | |
2614 | ||
2615 | /* RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, and ENUMERAL_TYPE | |
2616 | need special treatment. The TYPE_STUB_DECL field in these | |
2617 | types generally represents the tag name type we want to | |
2618 | output. In addition there could be a typedef type with | |
2619 | a different name. In that case we also want to output | |
2620 | that. */ | |
2621 | ||
75917fc0 | 2622 | if (TREE_CODE (t) == RECORD_TYPE |
6a08f7b3 DP |
2623 | || TREE_CODE (t) == UNION_TYPE |
2624 | || TREE_CODE (t) == QUAL_UNION_TYPE | |
2625 | || TREE_CODE (t) == ENUMERAL_TYPE) | |
6a08f7b3 | 2626 | { |
75917fc0 AP |
2627 | if (TYPE_STUB_DECL (t) |
2628 | && TYPE_STUB_DECL (t) != decl | |
2629 | && DECL_P (TYPE_STUB_DECL (t)) | |
2630 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (t))) | |
2631 | { | |
2632 | debug_queue_symbol (TYPE_STUB_DECL (t)); | |
2633 | if (TYPE_NAME (t) | |
2634 | && TYPE_NAME (t) != TYPE_STUB_DECL (t) | |
2635 | && TYPE_NAME (t) != decl | |
2636 | && DECL_P (TYPE_NAME (t))) | |
2637 | debug_queue_symbol (TYPE_NAME (t)); | |
2638 | } | |
2639 | } | |
6a08f7b3 DP |
2640 | else if (TYPE_NAME (t) |
2641 | && TYPE_NAME (t) != decl | |
6615c446 | 2642 | && DECL_P (TYPE_NAME (t))) |
6a08f7b3 DP |
2643 | debug_queue_symbol (TYPE_NAME (t)); |
2644 | } | |
00fe048c | 2645 | |
33e9d2aa DP |
2646 | emit_pending_bincls_if_required (); |
2647 | ||
00fe048c RS |
2648 | switch (TREE_CODE (decl)) |
2649 | { | |
2650 | case CONST_DECL: | |
2651 | /* Enum values are defined by defining the enum type. */ | |
2652 | break; | |
2653 | ||
2654 | case FUNCTION_DECL: | |
9bfa80fb RH |
2655 | decl_rtl = DECL_RTL_IF_SET (decl); |
2656 | if (!decl_rtl) | |
6a08f7b3 | 2657 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
0924ddef | 2658 | if (DECL_EXTERNAL (decl)) |
00fe048c RS |
2659 | break; |
2660 | /* Don't mention a nested function under its parent. */ | |
2661 | context = decl_function_context (decl); | |
2662 | if (context == current_function_decl) | |
2663 | break; | |
b950a32e EB |
2664 | /* Don't mention an inline instance of a nested function. */ |
2665 | if (context && DECL_FROM_INLINE (decl)) | |
2666 | break; | |
9bfa80fb RH |
2667 | if (!MEM_P (decl_rtl) |
2668 | || GET_CODE (XEXP (decl_rtl, 0)) != SYMBOL_REF) | |
00fe048c | 2669 | break; |
00fe048c | 2670 | |
f629051e DJ |
2671 | if (flag_debug_only_used_symbols) |
2672 | output_used_types (); | |
2673 | ||
93a27b7b ZW |
2674 | dbxout_begin_complex_stabs (); |
2675 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
2676 | stabstr_S (TREE_PUBLIC (decl) ? ":F" : ":f"); | |
00262c8a | 2677 | result = 1; |
00fe048c | 2678 | |
00fe048c | 2679 | if (TREE_TYPE (type)) |
deda4b76 | 2680 | dbxout_type (TREE_TYPE (type), 0); |
00fe048c | 2681 | else |
deda4b76 | 2682 | dbxout_type (void_type_node, 0); |
00fe048c RS |
2683 | |
2684 | /* For a nested function, when that function is compiled, | |
2685 | mention the containing function name | |
2686 | as well as (since dbx wants it) our own assembler-name. */ | |
2687 | if (context != 0) | |
93a27b7b ZW |
2688 | { |
2689 | stabstr_C (','); | |
2690 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
2691 | stabstr_C (','); | |
2692 | stabstr_I (DECL_NAME (context)); | |
2693 | } | |
00fe048c | 2694 | |
9bfa80fb | 2695 | dbxout_finish_complex_stabs (decl, N_FUN, XEXP (decl_rtl, 0), 0, 0); |
00fe048c RS |
2696 | break; |
2697 | ||
2698 | case TYPE_DECL: | |
00fe048c RS |
2699 | /* Don't output the same typedef twice. |
2700 | And don't output what language-specific stuff doesn't want output. */ | |
3a83beef | 2701 | if (TREE_ASM_WRITTEN (decl) || TYPE_DECL_SUPPRESS_DEBUG (decl)) |
6a08f7b3 | 2702 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
00fe048c | 2703 | |
21d13d83 ZW |
2704 | /* Don't output typedefs for types with magic type numbers (XCOFF). */ |
2705 | #ifdef DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER | |
2706 | { | |
2707 | int fundamental_type_number = | |
2708 | DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER (decl); | |
2709 | ||
2710 | if (fundamental_type_number != 0) | |
2711 | { | |
2712 | TREE_ASM_WRITTEN (decl) = 1; | |
2713 | TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl)) = fundamental_type_number; | |
2714 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2715 | } | |
2716 | } | |
2717 | #endif | |
00fe048c | 2718 | FORCE_TEXT; |
00262c8a | 2719 | result = 1; |
a823f1d8 RS |
2720 | { |
2721 | int tag_needed = 1; | |
3b6c7a7d | 2722 | int did_output = 0; |
25bdb910 | 2723 | |
a823f1d8 RS |
2724 | if (DECL_NAME (decl)) |
2725 | { | |
2726 | /* Nonzero means we must output a tag as well as a typedef. */ | |
2727 | tag_needed = 0; | |
00fe048c | 2728 | |
edbe40ea RS |
2729 | /* Handle the case of a C++ structure or union |
2730 | where the TYPE_NAME is a TYPE_DECL | |
2731 | which gives both a typedef name and a tag. */ | |
bed7dc7a | 2732 | /* dbx requires the tag first and the typedef second. */ |
edbe40ea | 2733 | if ((TREE_CODE (type) == RECORD_TYPE |
c1b98a95 RK |
2734 | || TREE_CODE (type) == UNION_TYPE |
2735 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
edbe40ea | 2736 | && TYPE_NAME (type) == decl |
abdafc8e | 2737 | && !use_gnu_debug_info_extensions |
bed7dc7a RS |
2738 | && !TREE_ASM_WRITTEN (TYPE_NAME (type)) |
2739 | /* Distinguish the implicit typedefs of C++ | |
2740 | from explicit ones that might be found in C. */ | |
3a538a66 | 2741 | && DECL_ARTIFICIAL (decl) |
6a08f7b3 DP |
2742 | /* Do not generate a tag for incomplete records. */ |
2743 | && COMPLETE_TYPE_P (type) | |
3342b6fd RK |
2744 | /* Do not generate a tag for records of variable size, |
2745 | since this type can not be properly described in the | |
2746 | DBX format, and it confuses some tools such as objdump. */ | |
cc269bb6 | 2747 | && tree_fits_uhwi_p (TYPE_SIZE (type))) |
edbe40ea | 2748 | { |
9dba4b55 | 2749 | tree name = TYPE_IDENTIFIER (type); |
edbe40ea | 2750 | |
93a27b7b ZW |
2751 | dbxout_begin_complex_stabs (); |
2752 | stabstr_I (name); | |
2753 | stabstr_S (":T"); | |
deda4b76 | 2754 | dbxout_type (type, 1); |
93a27b7b ZW |
2755 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, |
2756 | 0, 0, 0); | |
edbe40ea RS |
2757 | } |
2758 | ||
93a27b7b | 2759 | dbxout_begin_complex_stabs (); |
b0a93386 | 2760 | |
abdafc8e | 2761 | /* Output leading class/struct qualifiers. */ |
b0a93386 | 2762 | if (use_gnu_debug_info_extensions) |
93a27b7b | 2763 | dbxout_class_name_qualifiers (decl); |
b0a93386 | 2764 | |
a823f1d8 | 2765 | /* Output typedef name. */ |
93a27b7b ZW |
2766 | stabstr_I (DECL_NAME (decl)); |
2767 | stabstr_C (':'); | |
25bdb910 | 2768 | |
a823f1d8 RS |
2769 | /* Short cut way to output a tag also. */ |
2770 | if ((TREE_CODE (type) == RECORD_TYPE | |
c1b98a95 RK |
2771 | || TREE_CODE (type) == UNION_TYPE |
2772 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
37306b1e RK |
2773 | && TYPE_NAME (type) == decl |
2774 | /* Distinguish the implicit typedefs of C++ | |
2775 | from explicit ones that might be found in C. */ | |
3a538a66 | 2776 | && DECL_ARTIFICIAL (decl)) |
a823f1d8 | 2777 | { |
abdafc8e | 2778 | if (use_gnu_debug_info_extensions) |
a823f1d8 | 2779 | { |
93a27b7b | 2780 | stabstr_C ('T'); |
a823f1d8 RS |
2781 | TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1; |
2782 | } | |
a823f1d8 | 2783 | } |
00fe048c | 2784 | |
93a27b7b | 2785 | stabstr_C ('t'); |
deda4b76 | 2786 | dbxout_type (type, 1); |
93a27b7b ZW |
2787 | dbxout_finish_complex_stabs (decl, DBX_TYPE_DECL_STABS_CODE, |
2788 | 0, 0, 0); | |
3b6c7a7d | 2789 | did_output = 1; |
a823f1d8 | 2790 | } |
00fe048c | 2791 | |
3342b6fd RK |
2792 | /* Don't output a tag if this is an incomplete type. This prevents |
2793 | the sun4 Sun OS 4.x dbx from crashing. */ | |
83a05a97 | 2794 | |
bf6ed040 RK |
2795 | if (tag_needed && TYPE_NAME (type) != 0 |
2796 | && (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE | |
2797 | || (DECL_NAME (TYPE_NAME (type)) != 0)) | |
d0f062fb | 2798 | && COMPLETE_TYPE_P (type) |
a823f1d8 RS |
2799 | && !TREE_ASM_WRITTEN (TYPE_NAME (type))) |
2800 | { | |
2801 | /* For a TYPE_DECL with no name, but the type has a name, | |
2802 | output a tag. | |
2803 | This is what represents `struct foo' with no typedef. */ | |
2804 | /* In C++, the name of a type is the corresponding typedef. | |
2805 | In C, it is an IDENTIFIER_NODE. */ | |
9dba4b55 | 2806 | tree name = TYPE_IDENTIFIER (type); |
a823f1d8 | 2807 | |
93a27b7b ZW |
2808 | dbxout_begin_complex_stabs (); |
2809 | stabstr_I (name); | |
2810 | stabstr_S (":T"); | |
deda4b76 | 2811 | dbxout_type (type, 1); |
93a27b7b | 2812 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, 0, 0, 0); |
3b6c7a7d RS |
2813 | did_output = 1; |
2814 | } | |
2815 | ||
93a27b7b ZW |
2816 | /* If an enum type has no name, it cannot be referred to, but |
2817 | we must output it anyway, to record the enumeration | |
2818 | constants. */ | |
2819 | ||
3b6c7a7d RS |
2820 | if (!did_output && TREE_CODE (type) == ENUMERAL_TYPE) |
2821 | { | |
93a27b7b | 2822 | dbxout_begin_complex_stabs (); |
a63067c2 | 2823 | /* Some debuggers fail when given NULL names, so give this a |
93a27b7b ZW |
2824 | harmless name of " " (Why not "(anon)"?). */ |
2825 | stabstr_S (" :T"); | |
deda4b76 | 2826 | dbxout_type (type, 1); |
93a27b7b | 2827 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, 0, 0, 0); |
a823f1d8 RS |
2828 | } |
2829 | ||
2830 | /* Prevent duplicate output of a typedef. */ | |
2831 | TREE_ASM_WRITTEN (decl) = 1; | |
2832 | break; | |
2833 | } | |
00fe048c RS |
2834 | |
2835 | case PARM_DECL: | |
ed3346c2 EB |
2836 | if (DECL_HAS_VALUE_EXPR_P (decl)) |
2837 | decl = DECL_VALUE_EXPR (decl); | |
2838 | ||
2839 | /* PARM_DECLs go in their own separate chain and are output by | |
2840 | dbxout_reg_parms and dbxout_parms, except for those that are | |
2841 | disguised VAR_DECLs like Out parameters in Ada. */ | |
2842 | gcc_assert (TREE_CODE (decl) == VAR_DECL); | |
2843 | ||
2844 | /* ... fall through ... */ | |
00fe048c RS |
2845 | |
2846 | case RESULT_DECL: | |
00fe048c | 2847 | case VAR_DECL: |
00fe048c RS |
2848 | /* Don't mention a variable that is external. |
2849 | Let the file that defines it describe it. */ | |
0924ddef | 2850 | if (DECL_EXTERNAL (decl)) |
00fe048c RS |
2851 | break; |
2852 | ||
2853 | /* If the variable is really a constant | |
93a27b7b ZW |
2854 | and not written in memory, inform the debugger. |
2855 | ||
2856 | ??? Why do we skip emitting the type and location in this case? */ | |
00fe048c RS |
2857 | if (TREE_STATIC (decl) && TREE_READONLY (decl) |
2858 | && DECL_INITIAL (decl) != 0 | |
9541ffee | 2859 | && tree_fits_shwi_p (DECL_INITIAL (decl)) |
00fe048c | 2860 | && ! TREE_ASM_WRITTEN (decl) |
1787f59e | 2861 | && (DECL_FILE_SCOPE_P (decl) |
d6b27b56 DP |
2862 | || TREE_CODE (DECL_CONTEXT (decl)) == BLOCK |
2863 | || TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
93a27b7b | 2864 | && TREE_PUBLIC (decl) == 0) |
00fe048c | 2865 | { |
93a27b7b | 2866 | /* The sun4 assembler does not grok this. */ |
665f2503 | 2867 | |
93a27b7b ZW |
2868 | if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE |
2869 | || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE) | |
2870 | { | |
eb1ce453 | 2871 | HOST_WIDE_INT ival = tree_to_shwi (DECL_INITIAL (decl)); |
93a27b7b ZW |
2872 | |
2873 | dbxout_begin_complex_stabs (); | |
d6b27b56 DP |
2874 | dbxout_symbol_name (decl, NULL, 'c'); |
2875 | stabstr_S ("=i"); | |
93a27b7b ZW |
2876 | stabstr_D (ival); |
2877 | dbxout_finish_complex_stabs (0, N_LSYM, 0, 0, 0); | |
2878 | DBXOUT_DECR_NESTING; | |
2879 | return 1; | |
00fe048c | 2880 | } |
93a27b7b ZW |
2881 | else |
2882 | break; | |
00fe048c | 2883 | } |
93a27b7b | 2884 | /* else it is something we handle like a normal variable. */ |
00fe048c | 2885 | |
d6b27b56 DP |
2886 | decl_rtl = dbxout_expand_expr (decl); |
2887 | if (!decl_rtl) | |
2888 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2889 | ||
bbbbb16a | 2890 | decl_rtl = eliminate_regs (decl_rtl, VOIDmode, NULL_RTX); |
00fe048c | 2891 | #ifdef LEAF_REG_REMAP |
416ff32e | 2892 | if (crtl->uses_only_leaf_regs) |
9bfa80fb | 2893 | leaf_renumber_regs_insn (decl_rtl); |
00fe048c RS |
2894 | #endif |
2895 | ||
9bfa80fb | 2896 | result = dbxout_symbol_location (decl, type, 0, decl_rtl); |
e9a25f70 | 2897 | break; |
3a538a66 | 2898 | |
e9a25f70 JL |
2899 | default: |
2900 | break; | |
47700802 | 2901 | } |
6a08f7b3 | 2902 | DBXOUT_DECR_NESTING; |
00262c8a | 2903 | return result; |
47700802 RS |
2904 | } |
2905 | \f | |
2906 | /* Output the stab for DECL, a VAR_DECL, RESULT_DECL or PARM_DECL. | |
2907 | Add SUFFIX to its name, if SUFFIX is not 0. | |
2908 | Describe the variable as residing in HOME | |
00262c8a ML |
2909 | (usually HOME is DECL_RTL (DECL), but not always). |
2910 | Returns 1 if the stab was really emitted. */ | |
47700802 | 2911 | |
00262c8a | 2912 | static int |
7080f735 | 2913 | dbxout_symbol_location (tree decl, tree type, const char *suffix, rtx home) |
47700802 RS |
2914 | { |
2915 | int letter = 0; | |
dbb6088f | 2916 | stab_code_type code; |
93a27b7b ZW |
2917 | rtx addr = 0; |
2918 | int number = 0; | |
47700802 | 2919 | int regno = -1; |
00fe048c | 2920 | |
47700802 RS |
2921 | /* Don't mention a variable at all |
2922 | if it was completely optimized into nothingness. | |
3a538a66 | 2923 | |
9ec36da5 | 2924 | If the decl was from an inline function, then its rtl |
47700802 RS |
2925 | is not identically the rtl that was used in this |
2926 | particular compilation. */ | |
c99fa40f | 2927 | if (GET_CODE (home) == SUBREG) |
47700802 RS |
2928 | { |
2929 | rtx value = home; | |
ddef6bc7 | 2930 | |
47700802 | 2931 | while (GET_CODE (value) == SUBREG) |
ddef6bc7 | 2932 | value = SUBREG_REG (value); |
f8cfc6aa | 2933 | if (REG_P (value)) |
00fe048c | 2934 | { |
ddef6bc7 | 2935 | if (REGNO (value) >= FIRST_PSEUDO_REGISTER) |
00262c8a | 2936 | return 0; |
00fe048c | 2937 | } |
55a2c322 | 2938 | home = alter_subreg (&home, true); |
c99fa40f | 2939 | } |
f8cfc6aa | 2940 | if (REG_P (home)) |
c99fa40f RH |
2941 | { |
2942 | regno = REGNO (home); | |
2943 | if (regno >= FIRST_PSEUDO_REGISTER) | |
2944 | return 0; | |
47700802 RS |
2945 | } |
2946 | ||
2947 | /* The kind-of-variable letter depends on where | |
2948 | the variable is and on the scope of its name: | |
2949 | G and N_GSYM for static storage and global scope, | |
2950 | S for static storage and file scope, | |
2951 | V for static storage and local scope, | |
2952 | for those two, use N_LCSYM if data is in bss segment, | |
2953 | N_STSYM if in data segment, N_FUN otherwise. | |
2954 | (We used N_FUN originally, then changed to N_STSYM | |
2955 | to please GDB. However, it seems that confused ld. | |
2956 | Now GDB has been fixed to like N_FUN, says Kingdon.) | |
2957 | no letter at all, and N_LSYM, for auto variable, | |
2958 | r and N_RSYM for register variable. */ | |
2959 | ||
93a27b7b | 2960 | if (MEM_P (home) && GET_CODE (XEXP (home, 0)) == SYMBOL_REF) |
47700802 RS |
2961 | { |
2962 | if (TREE_PUBLIC (decl)) | |
00fe048c | 2963 | { |
7151ffbe | 2964 | int offs; |
47700802 | 2965 | letter = 'G'; |
93a27b7b | 2966 | code = N_GSYM; |
7151ffbe GH |
2967 | if (NULL != dbxout_common_check (decl, &offs)) |
2968 | { | |
2969 | letter = 'V'; | |
2970 | addr = 0; | |
2971 | number = offs; | |
2972 | } | |
00fe048c | 2973 | } |
47700802 | 2974 | else |
00fe048c | 2975 | { |
93a27b7b | 2976 | addr = XEXP (home, 0); |
00fe048c | 2977 | |
47700802 | 2978 | letter = decl_function_context (decl) ? 'V' : 'S'; |
00fe048c | 2979 | |
9ff93eb0 UW |
2980 | /* Some ports can transform a symbol ref into a label ref, |
2981 | because the symbol ref is too far away and has to be | |
2982 | dumped into a constant pool. Alternatively, the symbol | |
2983 | in the constant pool might be referenced by a different | |
2984 | symbol. */ | |
2985 | if (GET_CODE (addr) == SYMBOL_REF | |
2986 | && CONSTANT_POOL_ADDRESS_P (addr)) | |
2987 | { | |
2988 | bool marked; | |
2989 | rtx tmp = get_pool_constant_mark (addr, &marked); | |
2990 | ||
2991 | if (GET_CODE (tmp) == SYMBOL_REF) | |
2992 | { | |
2993 | addr = tmp; | |
2994 | if (CONSTANT_POOL_ADDRESS_P (addr)) | |
2995 | get_pool_constant_mark (addr, &marked); | |
2996 | else | |
2997 | marked = true; | |
2998 | } | |
2999 | else if (GET_CODE (tmp) == LABEL_REF) | |
3000 | { | |
3001 | addr = tmp; | |
3002 | marked = true; | |
3003 | } | |
3004 | ||
3005 | /* If all references to the constant pool were optimized | |
3006 | out, we just ignore the symbol. */ | |
3007 | if (!marked) | |
3008 | return 0; | |
3009 | } | |
3010 | ||
6c949b67 JW |
3011 | /* This should be the same condition as in assemble_variable, but |
3012 | we don't have access to dont_output_data here. So, instead, | |
3013 | we rely on the fact that error_mark_node initializers always | |
3014 | end up in bss for C++ and never end up in bss for C. */ | |
3015 | if (DECL_INITIAL (decl) == 0 | |
3ac88239 | 3016 | || (!strcmp (lang_hooks.name, "GNU C++") |
6c949b67 | 3017 | && DECL_INITIAL (decl) == error_mark_node)) |
7151ffbe GH |
3018 | { |
3019 | int offs; | |
3020 | code = N_LCSYM; | |
3021 | if (NULL != dbxout_common_check (decl, &offs)) | |
3022 | { | |
3023 | addr = 0; | |
3024 | number = offs; | |
3025 | letter = 'V'; | |
3026 | code = N_GSYM; | |
3027 | } | |
3028 | } | |
dddfb74b | 3029 | else if (DECL_IN_TEXT_SECTION (decl)) |
47700802 RS |
3030 | /* This is not quite right, but it's the closest |
3031 | of all the codes that Unix defines. */ | |
93a27b7b | 3032 | code = DBX_STATIC_CONST_VAR_CODE; |
47700802 RS |
3033 | else |
3034 | { | |
3035 | /* Ultrix `as' seems to need this. */ | |
00fe048c | 3036 | #ifdef DBX_STATIC_STAB_DATA_SECTION |
d6b5193b | 3037 | switch_to_section (data_section); |
00fe048c | 3038 | #endif |
93a27b7b | 3039 | code = N_STSYM; |
00fe048c RS |
3040 | } |
3041 | } | |
47700802 RS |
3042 | } |
3043 | else if (regno >= 0) | |
3044 | { | |
3045 | letter = 'r'; | |
93a27b7b ZW |
3046 | code = N_RSYM; |
3047 | number = DBX_REGISTER_NUMBER (regno); | |
47700802 | 3048 | } |
3c0cb5de JQ |
3049 | else if (MEM_P (home) |
3050 | && (MEM_P (XEXP (home, 0)) | |
f8cfc6aa | 3051 | || (REG_P (XEXP (home, 0)) |
9571f69b MM |
3052 | && REGNO (XEXP (home, 0)) != HARD_FRAME_POINTER_REGNUM |
3053 | && REGNO (XEXP (home, 0)) != STACK_POINTER_REGNUM | |
e3339d0f | 3054 | #if !HARD_FRAME_POINTER_IS_ARG_POINTER |
9571f69b MM |
3055 | && REGNO (XEXP (home, 0)) != ARG_POINTER_REGNUM |
3056 | #endif | |
3057 | ))) | |
47700802 RS |
3058 | /* If the value is indirect by memory or by a register |
3059 | that isn't the frame pointer | |
3060 | then it means the object is variable-sized and address through | |
3061 | that register or stack slot. DBX has no way to represent this | |
3062 | so all we can do is output the variable as a pointer. | |
6de9cd9a | 3063 | If it's not a parameter, ignore it. */ |
47700802 | 3064 | { |
f8cfc6aa | 3065 | if (REG_P (XEXP (home, 0))) |
00fe048c RS |
3066 | { |
3067 | letter = 'r'; | |
93a27b7b | 3068 | code = N_RSYM; |
e9716dc5 JJ |
3069 | if (REGNO (XEXP (home, 0)) >= FIRST_PSEUDO_REGISTER) |
3070 | return 0; | |
93a27b7b | 3071 | number = DBX_REGISTER_NUMBER (REGNO (XEXP (home, 0))); |
00fe048c | 3072 | } |
47700802 | 3073 | else |
00fe048c | 3074 | { |
93a27b7b | 3075 | code = N_LSYM; |
47700802 | 3076 | /* RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))). |
00fe048c | 3077 | We want the value of that CONST_INT. */ |
93a27b7b | 3078 | number = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (home, 0), 0)); |
b372168c | 3079 | } |
47700802 RS |
3080 | |
3081 | /* Effectively do build_pointer_type, but don't cache this type, | |
3082 | since it might be temporary whereas the type it points to | |
3083 | might have been saved for inlining. */ | |
3084 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
3085 | type = make_node (POINTER_TYPE); | |
3086 | TREE_TYPE (type) = TREE_TYPE (decl); | |
3087 | } | |
3c0cb5de | 3088 | else if (MEM_P (home) |
f8cfc6aa | 3089 | && REG_P (XEXP (home, 0))) |
47700802 | 3090 | { |
93a27b7b ZW |
3091 | code = N_LSYM; |
3092 | number = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); | |
47700802 | 3093 | } |
3c0cb5de | 3094 | else if (MEM_P (home) |
47700802 | 3095 | && GET_CODE (XEXP (home, 0)) == PLUS |
481683e1 | 3096 | && CONST_INT_P (XEXP (XEXP (home, 0), 1))) |
47700802 | 3097 | { |
93a27b7b | 3098 | code = N_LSYM; |
47700802 RS |
3099 | /* RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
3100 | We want the value of that CONST_INT. */ | |
93a27b7b | 3101 | number = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); |
47700802 | 3102 | } |
3c0cb5de | 3103 | else if (MEM_P (home) |
47700802 RS |
3104 | && GET_CODE (XEXP (home, 0)) == CONST) |
3105 | { | |
3106 | /* Handle an obscure case which can arise when optimizing and | |
3107 | when there are few available registers. (This is *always* | |
3108 | the case for i386/i486 targets). The RTL looks like | |
3109 | (MEM (CONST ...)) even though this variable is a local `auto' | |
3110 | or a local `register' variable. In effect, what has happened | |
3111 | is that the reload pass has seen that all assignments and | |
3112 | references for one such a local variable can be replaced by | |
3113 | equivalent assignments and references to some static storage | |
3114 | variable, thereby avoiding the need for a register. In such | |
3115 | cases we're forced to lie to debuggers and tell them that | |
3116 | this variable was itself `static'. */ | |
7151ffbe | 3117 | int offs; |
93a27b7b | 3118 | code = N_LCSYM; |
47700802 | 3119 | letter = 'V'; |
7151ffbe GH |
3120 | if (NULL == dbxout_common_check (decl, &offs)) |
3121 | addr = XEXP (XEXP (home, 0), 0); | |
3122 | else | |
3123 | { | |
3124 | addr = 0; | |
3125 | number = offs; | |
3126 | code = N_GSYM; | |
3127 | } | |
47700802 RS |
3128 | } |
3129 | else if (GET_CODE (home) == CONCAT) | |
3130 | { | |
02db7776 JO |
3131 | tree subtype; |
3132 | ||
3133 | /* If TYPE is not a COMPLEX_TYPE (it might be a RECORD_TYPE, | |
3134 | for example), then there is no easy way to figure out | |
3135 | what SUBTYPE should be. So, we give up. */ | |
3136 | if (TREE_CODE (type) != COMPLEX_TYPE) | |
3137 | return 0; | |
3138 | ||
3139 | subtype = TREE_TYPE (type); | |
47700802 RS |
3140 | |
3141 | /* If the variable's storage is in two parts, | |
3142 | output each as a separate stab with a modified name. */ | |
3143 | if (WORDS_BIG_ENDIAN) | |
3144 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 0)); | |
00fe048c | 3145 | else |
47700802 | 3146 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 0)); |
00fe048c | 3147 | |
47700802 RS |
3148 | if (WORDS_BIG_ENDIAN) |
3149 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 1)); | |
3150 | else | |
3151 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 1)); | |
00262c8a | 3152 | return 1; |
47700802 RS |
3153 | } |
3154 | else | |
3155 | /* Address might be a MEM, when DECL is a variable-sized object. | |
3156 | Or it might be const0_rtx, meaning previous passes | |
3157 | want us to ignore this variable. */ | |
00262c8a | 3158 | return 0; |
47700802 RS |
3159 | |
3160 | /* Ok, start a symtab entry and output the variable name. */ | |
859ee18f ZW |
3161 | emit_pending_bincls_if_required (); |
3162 | FORCE_TEXT; | |
b372168c MM |
3163 | |
3164 | #ifdef DBX_STATIC_BLOCK_START | |
93a27b7b | 3165 | DBX_STATIC_BLOCK_START (asm_out_file, code); |
b372168c MM |
3166 | #endif |
3167 | ||
859ee18f | 3168 | dbxout_begin_complex_stabs_noforcetext (); |
47700802 | 3169 | dbxout_symbol_name (decl, suffix, letter); |
deda4b76 | 3170 | dbxout_type (type, 0); |
93a27b7b | 3171 | dbxout_finish_complex_stabs (decl, code, addr, 0, number); |
b372168c MM |
3172 | |
3173 | #ifdef DBX_STATIC_BLOCK_END | |
93a27b7b | 3174 | DBX_STATIC_BLOCK_END (asm_out_file, code); |
b372168c | 3175 | #endif |
00262c8a | 3176 | return 1; |
47700802 RS |
3177 | } |
3178 | \f | |
3179 | /* Output the symbol name of DECL for a stabs, with suffix SUFFIX. | |
3180 | Then output LETTER to indicate the kind of location the symbol has. */ | |
3181 | ||
3182 | static void | |
7080f735 | 3183 | dbxout_symbol_name (tree decl, const char *suffix, int letter) |
47700802 | 3184 | { |
93a27b7b | 3185 | tree name; |
f9d99dd2 | 3186 | |
b8698a0f | 3187 | if (DECL_CONTEXT (decl) |
a4d8ec65 DP |
3188 | && (TYPE_P (DECL_CONTEXT (decl)) |
3189 | || TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL)) | |
3190 | /* One slight hitch: if this is a VAR_DECL which is a class member | |
3191 | or a namespace member, we must put out the mangled name instead of the | |
f9d99dd2 JM |
3192 | DECL_NAME. Note also that static member (variable) names DO NOT begin |
3193 | with underscores in .stabs directives. */ | |
93a27b7b | 3194 | name = DECL_ASSEMBLER_NAME (decl); |
f9d99dd2 JM |
3195 | else |
3196 | /* ...but if we're function-local, we don't want to include the junk | |
3197 | added by ASM_FORMAT_PRIVATE_NAME. */ | |
93a27b7b | 3198 | name = DECL_NAME (decl); |
f9d99dd2 | 3199 | |
93a27b7b ZW |
3200 | if (name) |
3201 | stabstr_I (name); | |
3202 | else | |
3203 | stabstr_S ("(anon)"); | |
47700802 | 3204 | |
93a27b7b ZW |
3205 | if (suffix) |
3206 | stabstr_S (suffix); | |
3207 | stabstr_C (':'); | |
02e3f1a8 | 3208 | if (letter) |
93a27b7b | 3209 | stabstr_C (letter); |
00fe048c RS |
3210 | } |
3211 | ||
7151ffbe GH |
3212 | |
3213 | /* Output the common block name for DECL in a stabs. | |
3214 | ||
3215 | Symbols in global common (.comm) get wrapped with an N_BCOMM/N_ECOMM pair | |
3216 | around each group of symbols in the same .comm area. The N_GSYM stabs | |
3217 | that are emitted only contain the offset in the common area. This routine | |
3218 | emits the N_BCOMM and N_ECOMM stabs. */ | |
3219 | ||
3220 | static void | |
dbb6088f | 3221 | dbxout_common_name (tree decl, const char *name, stab_code_type op) |
7151ffbe GH |
3222 | { |
3223 | dbxout_begin_complex_stabs (); | |
3224 | stabstr_S (name); | |
3225 | dbxout_finish_complex_stabs (decl, op, NULL_RTX, NULL, 0); | |
3226 | } | |
3227 | ||
3228 | /* Check decl to determine whether it is a VAR_DECL destined for storage in a | |
3229 | common area. If it is, the return value will be a non-null string giving | |
3230 | the name of the common storage block it will go into. If non-null, the | |
3231 | value is the offset into the common block for that symbol's storage. */ | |
3232 | ||
3233 | static const char * | |
3234 | dbxout_common_check (tree decl, int *value) | |
3235 | { | |
3236 | rtx home; | |
3237 | rtx sym_addr; | |
3238 | const char *name = NULL; | |
b8698a0f | 3239 | |
4d62b56a | 3240 | /* If the decl isn't a VAR_DECL, or if it isn't static, or if |
7151ffbe GH |
3241 | it does not have a value (the offset into the common area), or if it |
3242 | is thread local (as opposed to global) then it isn't common, and shouldn't | |
3243 | be handled as such. | |
b8698a0f | 3244 | |
7151ffbe GH |
3245 | ??? DECL_THREAD_LOCAL_P check prevents problems with improper .stabs |
3246 | for thread-local symbols. Can be handled via same mechanism as used | |
3247 | in dwarf2out.c. */ | |
3248 | if (TREE_CODE (decl) != VAR_DECL | |
c3284718 RS |
3249 | || !TREE_STATIC (decl) |
3250 | || !DECL_HAS_VALUE_EXPR_P (decl) | |
7151ffbe GH |
3251 | || DECL_THREAD_LOCAL_P (decl) |
3252 | || !is_fortran ()) | |
3253 | return NULL; | |
3254 | ||
b8698a0f | 3255 | home = DECL_RTL (decl); |
7151ffbe GH |
3256 | if (home == NULL_RTX || GET_CODE (home) != MEM) |
3257 | return NULL; | |
3258 | ||
3259 | sym_addr = dbxout_expand_expr (DECL_VALUE_EXPR (decl)); | |
3260 | if (sym_addr == NULL_RTX || GET_CODE (sym_addr) != MEM) | |
3261 | return NULL; | |
3262 | ||
3263 | sym_addr = XEXP (sym_addr, 0); | |
3264 | if (GET_CODE (sym_addr) == CONST) | |
3265 | sym_addr = XEXP (sym_addr, 0); | |
3266 | if ((GET_CODE (sym_addr) == SYMBOL_REF || GET_CODE (sym_addr) == PLUS) | |
3267 | && DECL_INITIAL (decl) == 0) | |
3268 | { | |
3269 | ||
3270 | /* We have a sym that will go into a common area, meaning that it | |
3271 | will get storage reserved with a .comm/.lcomm assembler pseudo-op. | |
3272 | ||
3273 | Determine name of common area this symbol will be an offset into, | |
3274 | and offset into that area. Also retrieve the decl for the area | |
3275 | that the symbol is offset into. */ | |
3276 | tree cdecl = NULL; | |
3277 | ||
3278 | switch (GET_CODE (sym_addr)) | |
3279 | { | |
3280 | case PLUS: | |
481683e1 | 3281 | if (CONST_INT_P (XEXP (sym_addr, 0))) |
7151ffbe GH |
3282 | { |
3283 | name = | |
c3284718 | 3284 | targetm.strip_name_encoding (XSTR (XEXP (sym_addr, 1), 0)); |
7151ffbe GH |
3285 | *value = INTVAL (XEXP (sym_addr, 0)); |
3286 | cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 1)); | |
3287 | } | |
3288 | else | |
3289 | { | |
3290 | name = | |
c3284718 | 3291 | targetm.strip_name_encoding (XSTR (XEXP (sym_addr, 0), 0)); |
7151ffbe GH |
3292 | *value = INTVAL (XEXP (sym_addr, 1)); |
3293 | cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 0)); | |
3294 | } | |
3295 | break; | |
3296 | ||
3297 | case SYMBOL_REF: | |
c3284718 | 3298 | name = targetm.strip_name_encoding (XSTR (sym_addr, 0)); |
7151ffbe GH |
3299 | *value = 0; |
3300 | cdecl = SYMBOL_REF_DECL (sym_addr); | |
3301 | break; | |
3302 | ||
3303 | default: | |
3304 | error ("common symbol debug info is not structured as " | |
3305 | "symbol+offset"); | |
3306 | } | |
3307 | ||
3308 | /* Check area common symbol is offset into. If this is not public, then | |
3309 | it is not a symbol in a common block. It must be a .lcomm symbol, not | |
3310 | a .comm symbol. */ | |
c3284718 | 3311 | if (cdecl == NULL || !TREE_PUBLIC (cdecl)) |
7151ffbe GH |
3312 | name = NULL; |
3313 | } | |
3314 | else | |
3315 | name = NULL; | |
3316 | ||
3317 | return name; | |
3318 | } | |
3319 | ||
cc2902df | 3320 | /* Output definitions of all the decls in a chain. Return nonzero if |
00262c8a | 3321 | anything was output */ |
00fe048c | 3322 | |
00262c8a | 3323 | int |
7080f735 | 3324 | dbxout_syms (tree syms) |
00fe048c | 3325 | { |
00262c8a | 3326 | int result = 0; |
7151ffbe GH |
3327 | const char *comm_prev = NULL; |
3328 | tree syms_prev = NULL; | |
3329 | ||
00fe048c RS |
3330 | while (syms) |
3331 | { | |
7151ffbe GH |
3332 | int temp, copen, cclos; |
3333 | const char *comm_new; | |
3334 | ||
3335 | /* Check for common symbol, and then progression into a new/different | |
3336 | block of common symbols. Emit closing/opening common bracket if | |
3337 | necessary. */ | |
3338 | comm_new = dbxout_common_check (syms, &temp); | |
3339 | copen = comm_new != NULL | |
3340 | && (comm_prev == NULL || strcmp (comm_new, comm_prev)); | |
3341 | cclos = comm_prev != NULL | |
3342 | && (comm_new == NULL || strcmp (comm_new, comm_prev)); | |
3343 | if (cclos) | |
3344 | dbxout_common_name (syms_prev, comm_prev, N_ECOMM); | |
3345 | if (copen) | |
3346 | { | |
3347 | dbxout_common_name (syms, comm_new, N_BCOMM); | |
3348 | syms_prev = syms; | |
3349 | } | |
3350 | comm_prev = comm_new; | |
3351 | ||
00262c8a | 3352 | result += dbxout_symbol (syms, 1); |
910ad8de | 3353 | syms = DECL_CHAIN (syms); |
00fe048c | 3354 | } |
7151ffbe GH |
3355 | |
3356 | if (comm_prev != NULL) | |
3357 | dbxout_common_name (syms_prev, comm_prev, N_ECOMM); | |
3358 | ||
00262c8a | 3359 | return result; |
00fe048c RS |
3360 | } |
3361 | \f | |
3362 | /* The following two functions output definitions of function parameters. | |
3363 | Each parameter gets a definition locating it in the parameter list. | |
3364 | Each parameter that is a register variable gets a second definition | |
3365 | locating it in the register. | |
3366 | ||
3367 | Printing or argument lists in gdb uses the definitions that | |
3368 | locate in the parameter list. But reference to the variable in | |
3369 | expressions uses preferentially the definition as a register. */ | |
3370 | ||
3371 | /* Output definitions, referring to storage in the parmlist, | |
3372 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
3373 | ||
b372168c | 3374 | void |
7080f735 | 3375 | dbxout_parms (tree parms) |
00fe048c | 3376 | { |
6a08f7b3 | 3377 | ++debug_nesting; |
33e9d2aa DP |
3378 | emit_pending_bincls_if_required (); |
3379 | ||
910ad8de | 3380 | for (; parms; parms = DECL_CHAIN (parms)) |
7a3e01c4 JDA |
3381 | if (DECL_NAME (parms) |
3382 | && TREE_TYPE (parms) != error_mark_node | |
3383 | && DECL_RTL_SET_P (parms) | |
3384 | && DECL_INCOMING_RTL (parms)) | |
00fe048c | 3385 | { |
93a27b7b ZW |
3386 | tree eff_type; |
3387 | char letter; | |
dbb6088f | 3388 | stab_code_type code; |
93a27b7b | 3389 | int number; |
00fe048c RS |
3390 | |
3391 | /* Perform any necessary register eliminations on the parameter's rtl, | |
3392 | so that the debugging output will be accurate. */ | |
3393 | DECL_INCOMING_RTL (parms) | |
bbbbb16a ILT |
3394 | = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX); |
3395 | SET_DECL_RTL (parms, | |
3396 | eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX)); | |
00fe048c | 3397 | #ifdef LEAF_REG_REMAP |
416ff32e | 3398 | if (crtl->uses_only_leaf_regs) |
00fe048c RS |
3399 | { |
3400 | leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms)); | |
3401 | leaf_renumber_regs_insn (DECL_RTL (parms)); | |
3402 | } | |
3403 | #endif | |
3404 | ||
3405 | if (PARM_PASSED_IN_MEMORY (parms)) | |
3406 | { | |
93a27b7b | 3407 | rtx inrtl = XEXP (DECL_INCOMING_RTL (parms), 0); |
00fe048c RS |
3408 | |
3409 | /* ??? Here we assume that the parm address is indexed | |
3410 | off the frame pointer or arg pointer. | |
3411 | If that is not true, we produce meaningless results, | |
3412 | but do not crash. */ | |
93a27b7b | 3413 | if (GET_CODE (inrtl) == PLUS |
481683e1 | 3414 | && CONST_INT_P (XEXP (inrtl, 1))) |
93a27b7b | 3415 | number = INTVAL (XEXP (inrtl, 1)); |
00fe048c | 3416 | else |
93a27b7b ZW |
3417 | number = 0; |
3418 | ||
3419 | code = N_PSYM; | |
3420 | number = DEBUGGER_ARG_OFFSET (number, inrtl); | |
3421 | letter = 'p'; | |
3422 | ||
3423 | /* It is quite tempting to use TREE_TYPE (parms) instead | |
3424 | of DECL_ARG_TYPE (parms) for the eff_type, so that gcc | |
3425 | reports the actual type of the parameter, rather than | |
3426 | the promoted type. This certainly makes GDB's life | |
3427 | easier, at least for some ports. The change is a bad | |
3428 | idea however, since GDB expects to be able access the | |
3429 | type without performing any conversions. So for | |
3430 | example, if we were passing a float to an unprototyped | |
3431 | function, gcc will store a double on the stack, but if | |
3432 | we emit a stab saying the type is a float, then gdb | |
3433 | will only read in a single value, and this will produce | |
3434 | an erroneous value. */ | |
3435 | eff_type = DECL_ARG_TYPE (parms); | |
00fe048c | 3436 | } |
f8cfc6aa | 3437 | else if (REG_P (DECL_RTL (parms))) |
00fe048c RS |
3438 | { |
3439 | rtx best_rtl; | |
25b5c537 | 3440 | |
93a27b7b ZW |
3441 | /* Parm passed in registers and lives in registers or nowhere. */ |
3442 | code = DBX_REGPARM_STABS_CODE; | |
3443 | letter = DBX_REGPARM_STABS_LETTER; | |
3444 | ||
3445 | /* For parms passed in registers, it is better to use the | |
3446 | declared type of the variable, not the type it arrived in. */ | |
3447 | eff_type = TREE_TYPE (parms); | |
3448 | ||
3449 | /* If parm lives in a register, use that register; pretend | |
3450 | the parm was passed there. It would be more consistent | |
3451 | to describe the register where the parm was passed, but | |
3452 | in practice that register usually holds something else. | |
3453 | If the parm lives nowhere, use the register where it | |
3454 | was passed. */ | |
770ae6cc | 3455 | if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
93a27b7b | 3456 | best_rtl = DECL_RTL (parms); |
116612b9 EB |
3457 | else if (GET_CODE (DECL_INCOMING_RTL (parms)) == PARALLEL) |
3458 | best_rtl = XEXP (XVECEXP (DECL_INCOMING_RTL (parms), 0, 0), 0); | |
00fe048c | 3459 | else |
93a27b7b | 3460 | best_rtl = DECL_INCOMING_RTL (parms); |
00fe048c | 3461 | |
93a27b7b | 3462 | number = DBX_REGISTER_NUMBER (REGNO (best_rtl)); |
00fe048c | 3463 | } |
3c0cb5de | 3464 | else if (MEM_P (DECL_RTL (parms)) |
f8cfc6aa | 3465 | && REG_P (XEXP (DECL_RTL (parms), 0)) |
b205fb6f JW |
3466 | && REGNO (XEXP (DECL_RTL (parms), 0)) != HARD_FRAME_POINTER_REGNUM |
3467 | && REGNO (XEXP (DECL_RTL (parms), 0)) != STACK_POINTER_REGNUM | |
e3339d0f | 3468 | #if !HARD_FRAME_POINTER_IS_ARG_POINTER |
b205fb6f JW |
3469 | && REGNO (XEXP (DECL_RTL (parms), 0)) != ARG_POINTER_REGNUM |
3470 | #endif | |
3471 | ) | |
dad0145a RS |
3472 | { |
3473 | /* Parm was passed via invisible reference. | |
3474 | That is, its address was passed in a register. | |
3475 | Output it as if it lived in that register. | |
3476 | The debugger will know from the type | |
4828a73e | 3477 | that it was actually passed by invisible reference. */ |
ac746f1d | 3478 | |
93a27b7b | 3479 | code = DBX_REGPARM_STABS_CODE; |
b8698a0f | 3480 | |
93a27b7b ZW |
3481 | /* GDB likes this marked with a special letter. */ |
3482 | letter = (use_gnu_debug_info_extensions | |
3483 | ? 'a' : DBX_REGPARM_STABS_LETTER); | |
3484 | eff_type = TREE_TYPE (parms); | |
dad0145a | 3485 | |
4e6ee267 JW |
3486 | /* DECL_RTL looks like (MEM (REG...). Get the register number. |
3487 | If it is an unallocated pseudo-reg, then use the register where | |
93a27b7b ZW |
3488 | it was passed instead. |
3489 | ??? Why is DBX_REGISTER_NUMBER not used here? */ | |
4e6ee267 | 3490 | |
93a27b7b ZW |
3491 | if (REGNO (XEXP (DECL_RTL (parms), 0)) < FIRST_PSEUDO_REGISTER) |
3492 | number = REGNO (XEXP (DECL_RTL (parms), 0)); | |
dad0145a | 3493 | else |
93a27b7b | 3494 | number = REGNO (DECL_INCOMING_RTL (parms)); |
dad0145a | 3495 | } |
3c0cb5de JQ |
3496 | else if (MEM_P (DECL_RTL (parms)) |
3497 | && MEM_P (XEXP (DECL_RTL (parms), 0))) | |
27646dba JB |
3498 | { |
3499 | /* Parm was passed via invisible reference, with the reference | |
3500 | living on the stack. DECL_RTL looks like | |
ebb0cdf3 CM |
3501 | (MEM (MEM (PLUS (REG ...) (CONST_INT ...)))) or it |
3502 | could look like (MEM (MEM (REG))). */ | |
93a27b7b ZW |
3503 | |
3504 | code = N_PSYM; | |
3505 | letter = 'v'; | |
3506 | eff_type = TREE_TYPE (parms); | |
3507 | ||
3508 | if (!REG_P (XEXP (XEXP (DECL_RTL (parms), 0), 0))) | |
3509 | number = INTVAL (XEXP (XEXP (XEXP (DECL_RTL (parms), 0), 0), 1)); | |
ebb0cdf3 | 3510 | else |
93a27b7b ZW |
3511 | number = 0; |
3512 | ||
3513 | number = DEBUGGER_ARG_OFFSET (number, | |
3514 | XEXP (XEXP (DECL_RTL (parms), 0), 0)); | |
27646dba | 3515 | } |
3c0cb5de | 3516 | else if (MEM_P (DECL_RTL (parms)) |
8d291181 RS |
3517 | && XEXP (DECL_RTL (parms), 0) != const0_rtx |
3518 | /* ??? A constant address for a parm can happen | |
3519 | when the reg it lives in is equiv to a constant in memory. | |
3520 | Should make this not happen, after 2.4. */ | |
3521 | && ! CONSTANT_P (XEXP (DECL_RTL (parms), 0))) | |
00fe048c RS |
3522 | { |
3523 | /* Parm was passed in registers but lives on the stack. */ | |
3524 | ||
93a27b7b ZW |
3525 | code = N_PSYM; |
3526 | letter = 'p'; | |
3527 | eff_type = TREE_TYPE (parms); | |
3528 | ||
00fe048c RS |
3529 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), |
3530 | in which case we want the value of that CONST_INT, | |
27646dba | 3531 | or (MEM (REG ...)), |
00fe048c | 3532 | in which case we use a value of zero. */ |
93a27b7b ZW |
3533 | if (!REG_P (XEXP (DECL_RTL (parms), 0))) |
3534 | number = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
00fe048c | 3535 | else |
93a27b7b | 3536 | number = 0; |
00fe048c | 3537 | |
620422fd DE |
3538 | /* Make a big endian correction if the mode of the type of the |
3539 | parameter is not the same as the mode of the rtl. */ | |
3540 | if (BYTES_BIG_ENDIAN | |
3541 | && TYPE_MODE (TREE_TYPE (parms)) != GET_MODE (DECL_RTL (parms)) | |
3542 | && GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms))) < UNITS_PER_WORD) | |
93a27b7b ZW |
3543 | number += (GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))) |
3544 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms)))); | |
3545 | } | |
3546 | else | |
3547 | /* ??? We don't know how to represent this argument. */ | |
3548 | continue; | |
00fe048c | 3549 | |
93a27b7b | 3550 | dbxout_begin_complex_stabs (); |
b8698a0f | 3551 | |
93a27b7b ZW |
3552 | if (DECL_NAME (parms)) |
3553 | { | |
3554 | stabstr_I (DECL_NAME (parms)); | |
3555 | stabstr_C (':'); | |
00fe048c | 3556 | } |
93a27b7b ZW |
3557 | else |
3558 | stabstr_S ("(anon):"); | |
3559 | stabstr_C (letter); | |
3560 | dbxout_type (eff_type, 0); | |
3561 | dbxout_finish_complex_stabs (parms, code, 0, 0, number); | |
00fe048c | 3562 | } |
6a08f7b3 | 3563 | DBXOUT_DECR_NESTING; |
00fe048c RS |
3564 | } |
3565 | ||
3566 | /* Output definitions for the places where parms live during the function, | |
3567 | when different from where they were passed, when the parms were passed | |
3568 | in memory. | |
3569 | ||
3570 | It is not useful to do this for parms passed in registers | |
3571 | that live during the function in different registers, because it is | |
3572 | impossible to look in the passed register for the passed value, | |
3573 | so we use the within-the-function register to begin with. | |
3574 | ||
3575 | PARMS is a chain of PARM_DECL nodes. */ | |
3576 | ||
b372168c | 3577 | void |
7080f735 | 3578 | dbxout_reg_parms (tree parms) |
00fe048c | 3579 | { |
6a08f7b3 DP |
3580 | ++debug_nesting; |
3581 | ||
910ad8de | 3582 | for (; parms; parms = DECL_CHAIN (parms)) |
dc2fba60 | 3583 | if (DECL_NAME (parms) && PARM_PASSED_IN_MEMORY (parms)) |
00fe048c | 3584 | { |
00fe048c RS |
3585 | /* Report parms that live in registers during the function |
3586 | but were passed in memory. */ | |
f8cfc6aa | 3587 | if (REG_P (DECL_RTL (parms)) |
dc2fba60 | 3588 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
47700802 RS |
3589 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3590 | 0, DECL_RTL (parms)); | |
dc2fba60 | 3591 | else if (GET_CODE (DECL_RTL (parms)) == CONCAT) |
47700802 RS |
3592 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3593 | 0, DECL_RTL (parms)); | |
00fe048c | 3594 | /* Report parms that live in memory but not where they were passed. */ |
3c0cb5de | 3595 | else if (MEM_P (DECL_RTL (parms)) |
00fe048c | 3596 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) |
dc2fba60 JW |
3597 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3598 | 0, DECL_RTL (parms)); | |
00fe048c | 3599 | } |
6a08f7b3 | 3600 | DBXOUT_DECR_NESTING; |
00fe048c RS |
3601 | } |
3602 | \f | |
3603 | /* Given a chain of ..._TYPE nodes (as come in a parameter list), | |
3604 | output definitions of those names, in raw form */ | |
3605 | ||
e1772ac0 | 3606 | static void |
7080f735 | 3607 | dbxout_args (tree args) |
00fe048c RS |
3608 | { |
3609 | while (args) | |
3610 | { | |
93a27b7b | 3611 | stabstr_C (','); |
deda4b76 | 3612 | dbxout_type (TREE_VALUE (args), 0); |
00fe048c RS |
3613 | args = TREE_CHAIN (args); |
3614 | } | |
3615 | } | |
3616 | \f | |
b420396f OH |
3617 | #if defined (DBX_DEBUGGING_INFO) |
3618 | ||
7e2e8179 ZW |
3619 | /* Subroutine of dbxout_block. Emit an N_LBRAC stab referencing LABEL. |
3620 | BEGIN_LABEL is the name of the beginning of the function, which may | |
3621 | be required. */ | |
3622 | static void | |
3623 | dbx_output_lbrac (const char *label, | |
3624 | const char *begin_label ATTRIBUTE_UNUSED) | |
3625 | { | |
93a27b7b | 3626 | dbxout_begin_stabn (N_LBRAC); |
3e487b21 | 3627 | if (DBX_BLOCKS_FUNCTION_RELATIVE) |
93a27b7b ZW |
3628 | dbxout_stab_value_label_diff (label, begin_label); |
3629 | else | |
3630 | dbxout_stab_value_label (label); | |
7e2e8179 ZW |
3631 | } |
3632 | ||
3633 | /* Subroutine of dbxout_block. Emit an N_RBRAC stab referencing LABEL. | |
3634 | BEGIN_LABEL is the name of the beginning of the function, which may | |
3635 | be required. */ | |
3636 | static void | |
3637 | dbx_output_rbrac (const char *label, | |
3638 | const char *begin_label ATTRIBUTE_UNUSED) | |
3639 | { | |
93a27b7b | 3640 | dbxout_begin_stabn (N_RBRAC); |
3e487b21 | 3641 | if (DBX_BLOCKS_FUNCTION_RELATIVE) |
93a27b7b ZW |
3642 | dbxout_stab_value_label_diff (label, begin_label); |
3643 | else | |
3644 | dbxout_stab_value_label (label); | |
7e2e8179 ZW |
3645 | } |
3646 | ||
00fe048c RS |
3647 | /* Output everything about a symbol block (a BLOCK node |
3648 | that represents a scope level), | |
3649 | including recursive output of contained blocks. | |
3650 | ||
3651 | BLOCK is the BLOCK node. | |
3652 | DEPTH is its depth within containing symbol blocks. | |
3653 | ARGS is usually zero; but for the outermost block of the | |
3654 | body of a function, it is a chain of PARM_DECLs for the function parameters. | |
3655 | We output definitions of all the register parms | |
3656 | as if they were local variables of that block. | |
3657 | ||
3658 | If -g1 was used, we count blocks just the same, but output nothing | |
3659 | except for the outermost block. | |
3660 | ||
3661 | Actually, BLOCK may be several blocks chained together. | |
3662 | We handle them all in sequence. */ | |
3663 | ||
3664 | static void | |
7080f735 | 3665 | dbxout_block (tree block, int depth, tree args) |
00fe048c | 3666 | { |
03471b3f CD |
3667 | char begin_label[20]; |
3668 | /* Reference current function start using LFBB. */ | |
3669 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); | |
00fe048c RS |
3670 | |
3671 | while (block) | |
3672 | { | |
3673 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
5b4c43d7 | 3674 | if (TREE_USED (block) && TREE_ASM_WRITTEN (block)) |
00fe048c | 3675 | { |
711d4bb3 | 3676 | int did_output; |
7e2e8179 | 3677 | int blocknum = BLOCK_NUMBER (block); |
711d4bb3 | 3678 | |
00262c8a | 3679 | /* In dbx format, the syms of a block come before the N_LBRAC. |
30f7a378 | 3680 | If nothing is output, we don't need the N_LBRAC, either. */ |
711d4bb3 | 3681 | did_output = 0; |
00fe048c | 3682 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) |
711d4bb3 | 3683 | did_output = dbxout_syms (BLOCK_VARS (block)); |
00fe048c RS |
3684 | if (args) |
3685 | dbxout_reg_parms (args); | |
00fe048c RS |
3686 | |
3687 | /* Now output an N_LBRAC symbol to represent the beginning of | |
3688 | the block. Use the block's tree-walk order to generate | |
3689 | the assembler symbols LBBn and LBEn | |
3690 | that final will define around the code in this block. */ | |
7e2e8179 | 3691 | if (did_output) |
00fe048c RS |
3692 | { |
3693 | char buf[20]; | |
7e2e8179 ZW |
3694 | const char *scope_start; |
3695 | ||
3696 | if (depth == 0) | |
3697 | /* The outermost block doesn't get LBB labels; use | |
03471b3f | 3698 | the LFBB local symbol emitted by dbxout_begin_prologue. */ |
7e2e8179 ZW |
3699 | scope_start = begin_label; |
3700 | else | |
3701 | { | |
3702 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum); | |
3703 | scope_start = buf; | |
3704 | } | |
00fe048c | 3705 | |
7e2e8179 | 3706 | dbx_output_lbrac (scope_start, begin_label); |
00fe048c | 3707 | } |
00fe048c | 3708 | |
00fe048c | 3709 | /* Output the subblocks. */ |
0d92cbff | 3710 | dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
00fe048c RS |
3711 | |
3712 | /* Refer to the marker for the end of the block. */ | |
7e2e8179 | 3713 | if (did_output) |
00fe048c | 3714 | { |
7e2e8179 ZW |
3715 | char buf[100]; |
3716 | if (depth == 0) | |
3717 | /* The outermost block doesn't get LBE labels; | |
3718 | use the "scope" label which will be emitted | |
3719 | by dbxout_function_end. */ | |
3720 | ASM_GENERATE_INTERNAL_LABEL (buf, "Lscope", scope_labelno); | |
3721 | else | |
3722 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum); | |
3723 | ||
3724 | dbx_output_rbrac (buf, begin_label); | |
00fe048c RS |
3725 | } |
3726 | } | |
3727 | block = BLOCK_CHAIN (block); | |
3728 | } | |
3729 | } | |
3730 | ||
3731 | /* Output the information about a function and its arguments and result. | |
3732 | Usually this follows the function's code, | |
3733 | but on some systems, it comes before. */ | |
3734 | ||
3735 | static void | |
7080f735 | 3736 | dbxout_begin_function (tree decl) |
00fe048c | 3737 | { |
847d0c08 RH |
3738 | int saved_tree_used1; |
3739 | ||
847d0c08 | 3740 | saved_tree_used1 = TREE_USED (decl); |
6a08f7b3 DP |
3741 | TREE_USED (decl) = 1; |
3742 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
3743 | { | |
7080f735 | 3744 | int saved_tree_used2 = TREE_USED (DECL_RESULT (decl)); |
6a08f7b3 DP |
3745 | TREE_USED (DECL_RESULT (decl)) = 1; |
3746 | dbxout_symbol (decl, 0); | |
3747 | TREE_USED (DECL_RESULT (decl)) = saved_tree_used2; | |
3748 | } | |
3749 | else | |
3750 | dbxout_symbol (decl, 0); | |
3751 | TREE_USED (decl) = saved_tree_used1; | |
3752 | ||
00fe048c RS |
3753 | dbxout_parms (DECL_ARGUMENTS (decl)); |
3754 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
3755 | dbxout_symbol (DECL_RESULT (decl), 1); | |
3756 | } | |
c3fb23f4 | 3757 | #endif /* DBX_DEBUGGING_INFO */ |
00fe048c | 3758 | |
4f70758f | 3759 | #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */ |
17211ab5 | 3760 | |
be7a421e SB |
3761 | /* Record an element in the table of global destructors. SYMBOL is |
3762 | a SYMBOL_REF of the function to be called; PRIORITY is a number | |
3763 | between 0 and MAX_INIT_PRIORITY. */ | |
3764 | ||
3765 | void | |
3766 | default_stabs_asm_out_destructor (rtx symbol ATTRIBUTE_UNUSED, | |
3767 | int priority ATTRIBUTE_UNUSED) | |
3768 | { | |
3769 | #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO | |
3770 | /* Tell GNU LD that this is part of the static destructor set. | |
3771 | This will work for any system that uses stabs, most usefully | |
3772 | aout systems. */ | |
3773 | dbxout_begin_simple_stabs ("___DTOR_LIST__", 22 /* N_SETT */); | |
3774 | dbxout_stab_value_label (XSTR (symbol, 0)); | |
3775 | #else | |
3776 | sorry ("global destructors not supported on this target"); | |
3777 | #endif | |
3778 | } | |
3779 | ||
3780 | /* Likewise for global constructors. */ | |
3781 | ||
3782 | void | |
3783 | default_stabs_asm_out_constructor (rtx symbol ATTRIBUTE_UNUSED, | |
3784 | int priority ATTRIBUTE_UNUSED) | |
3785 | { | |
3786 | #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO | |
3787 | /* Tell GNU LD that this is part of the static destructor set. | |
3788 | This will work for any system that uses stabs, most usefully | |
3789 | aout systems. */ | |
3790 | dbxout_begin_simple_stabs ("___CTOR_LIST__", 22 /* N_SETT */); | |
3791 | dbxout_stab_value_label (XSTR (symbol, 0)); | |
3792 | #else | |
3793 | sorry ("global constructors not supported on this target"); | |
3794 | #endif | |
3795 | } | |
3796 | ||
17211ab5 | 3797 | #include "gt-dbxout.h" |