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946754ae | 1 | /* Output dbx-format symbol table information from GNU compiler. |
d353bf18 | 2 | Copyright (C) 1987-2015 Free Software Foundation, Inc. |
946754ae | 3 | |
f12b58b3 | 4 | This file is part of GCC. |
946754ae | 5 | |
f12b58b3 | 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 | |
8c4c00c1 | 8 | Software Foundation; either version 3, or (at your option) any later |
f12b58b3 | 9 | version. |
946754ae | 10 | |
f12b58b3 | 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. | |
946754ae | 15 | |
16 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
946754ae | 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 | ||
0dbd1c74 | 69 | #include "config.h" |
405711de | 70 | #include "system.h" |
805e22b2 | 71 | #include "coretypes.h" |
7c29e30e | 72 | #include "target.h" |
73 | #include "function.h" | |
74 | #include "obstack.h" | |
75 | #include "rtl.h" | |
946754ae | 76 | #include "tree.h" |
7c29e30e | 77 | #include "tm_p.h" |
78 | #include "stringpool.h" | |
79 | #include "expmed.h" | |
80 | #include "insn-config.h" | |
81 | #include "regs.h" | |
82 | #include "emit-rtl.h" | |
83 | #include "cgraph.h" | |
84 | #include "diagnostic-core.h" | |
85 | #include "alias.h" | |
b20a8bb4 | 86 | #include "fold-const.h" |
9ed99284 | 87 | #include "varasm.h" |
88 | #include "stor-layout.h" | |
946754ae | 89 | #include "flags.h" |
946754ae | 90 | #include "reload.h" |
e3b8b697 | 91 | #include "output.h" |
744d3441 | 92 | #include "dbxout.h" |
0e93a6ac | 93 | #include "toplev.h" |
b896d81b | 94 | #include "debug.h" |
218e3e4e | 95 | #include "common/common-target.h" |
d19bd1f0 | 96 | #include "langhooks.h" |
d53441c8 | 97 | #include "dojump.h" |
98 | #include "explow.h" | |
99 | #include "calls.h" | |
d53441c8 | 100 | #include "stmt.h" |
50a7abc5 | 101 | #include "expr.h" |
946754ae | 102 | |
439c05a0 | 103 | #ifdef XCOFF_DEBUGGING_INFO |
3d82b777 | 104 | #include "xcoffout.h" |
439c05a0 | 105 | #endif |
106 | ||
946754ae | 107 | #ifndef ASM_STABS_OP |
d0de818d | 108 | # ifdef XCOFF_DEBUGGING_INFO |
109 | # define ASM_STABS_OP "\t.stabx\t" | |
110 | # else | |
111 | # define ASM_STABS_OP "\t.stabs\t" | |
112 | # endif | |
946754ae | 113 | #endif |
114 | ||
115 | #ifndef ASM_STABN_OP | |
6ae8577b | 116 | #define ASM_STABN_OP "\t.stabn\t" |
946754ae | 117 | #endif |
118 | ||
d0de818d | 119 | #ifndef ASM_STABD_OP |
120 | #define ASM_STABD_OP "\t.stabd\t" | |
121 | #endif | |
122 | ||
98123cec | 123 | #ifndef DBX_TYPE_DECL_STABS_CODE |
124 | #define DBX_TYPE_DECL_STABS_CODE N_LSYM | |
439c05a0 | 125 | #endif |
126 | ||
127 | #ifndef DBX_STATIC_CONST_VAR_CODE | |
128 | #define DBX_STATIC_CONST_VAR_CODE N_FUN | |
129 | #endif | |
130 | ||
131 | #ifndef DBX_REGPARM_STABS_CODE | |
132 | #define DBX_REGPARM_STABS_CODE N_RSYM | |
133 | #endif | |
134 | ||
135 | #ifndef DBX_REGPARM_STABS_LETTER | |
136 | #define DBX_REGPARM_STABS_LETTER 'P' | |
137 | #endif | |
138 | ||
a3407969 | 139 | #ifndef NO_DBX_FUNCTION_END |
140 | #define NO_DBX_FUNCTION_END 0 | |
141 | #endif | |
142 | ||
7d6171f2 | 143 | #ifndef NO_DBX_BNSYM_ENSYM |
144 | #define NO_DBX_BNSYM_ENSYM 0 | |
145 | #endif | |
146 | ||
d0de818d | 147 | #ifndef NO_DBX_MAIN_SOURCE_DIRECTORY |
148 | #define NO_DBX_MAIN_SOURCE_DIRECTORY 0 | |
149 | #endif | |
150 | ||
e3b8b697 | 151 | #ifndef DBX_BLOCKS_FUNCTION_RELATIVE |
152 | #define DBX_BLOCKS_FUNCTION_RELATIVE 0 | |
153 | #endif | |
154 | ||
155 | #ifndef DBX_LINES_FUNCTION_RELATIVE | |
156 | #define DBX_LINES_FUNCTION_RELATIVE 0 | |
157 | #endif | |
158 | ||
d0de818d | 159 | #ifndef DBX_CONTIN_LENGTH |
160 | #define DBX_CONTIN_LENGTH 80 | |
161 | #endif | |
162 | ||
163 | #ifndef DBX_CONTIN_CHAR | |
164 | #define DBX_CONTIN_CHAR '\\' | |
165 | #endif | |
166 | ||
946754ae | 167 | enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED}; |
168 | ||
54ae7e56 | 169 | /* Structure recording information about a C data type. |
170 | The status element says whether we have yet output | |
171 | the definition of the type. TYPE_XREF says we have | |
172 | output it as a cross-reference only. | |
173 | The file_number and type_number elements are used if DBX_USE_BINCL | |
174 | is defined. */ | |
175 | ||
fb1e4f4a | 176 | struct GTY(()) typeinfo { |
54ae7e56 | 177 | enum typestatus status; |
54ae7e56 | 178 | int file_number; |
179 | int type_number; | |
54ae7e56 | 180 | }; |
181 | ||
182 | /* Vector recording information about C data types. | |
946754ae | 183 | When we first notice a data type (a tree node), |
184 | we assign it a number using next_type_number. | |
54ae7e56 | 185 | That is its index in this vector. */ |
946754ae | 186 | |
573aba85 | 187 | static GTY ((length ("typevec_len"))) struct typeinfo *typevec; |
946754ae | 188 | |
189 | /* Number of elements of space allocated in `typevec'. */ | |
190 | ||
573aba85 | 191 | static GTY(()) int typevec_len; |
946754ae | 192 | |
193 | /* In dbx output, each type gets a unique number. | |
194 | This is the number for the next type output. | |
195 | The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */ | |
196 | ||
573aba85 | 197 | static GTY(()) int next_type_number; |
54ae7e56 | 198 | |
73ae3ef7 | 199 | /* The C front end may call dbxout_symbol before dbxout_init runs. |
200 | We save all such decls in this list and output them when we get | |
201 | to dbxout_init. */ | |
202 | ||
203 | static GTY(()) tree preinit_symbols; | |
204 | ||
51cec339 | 205 | enum binclstatus {BINCL_NOT_REQUIRED, BINCL_PENDING, BINCL_PROCESSED}; |
206 | ||
54ae7e56 | 207 | /* When using N_BINCL in dbx output, each type number is actually a |
208 | pair of the file number and the type number within the file. | |
209 | This is a stack of input files. */ | |
210 | ||
65f52f4e | 211 | struct dbx_file |
54ae7e56 | 212 | { |
213 | struct dbx_file *next; | |
214 | int file_number; | |
215 | int next_type_number; | |
65f52f4e | 216 | enum binclstatus bincl_status; /* Keep track of lazy bincl. */ |
217 | const char *pending_bincl_name; /* Name of bincl. */ | |
218 | struct dbx_file *prev; /* Chain to traverse all pending bincls. */ | |
54ae7e56 | 219 | }; |
220 | ||
48e1416a | 221 | /* This is the top of the stack. |
222 | ||
65f52f4e | 223 | This is not saved for PCH, because restoring a PCH should not change it. |
224 | next_file_number does have to be saved, because the PCH may use some | |
225 | file numbers; however, just before restoring a PCH, next_file_number | |
226 | should always be 0 because we should not have needed any file numbers | |
227 | yet. */ | |
54ae7e56 | 228 | |
7bff8f28 | 229 | #if (defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)) \ |
230 | && defined (DBX_USE_BINCL) | |
65f52f4e | 231 | static struct dbx_file *current_file; |
14f1f66f | 232 | #endif |
54ae7e56 | 233 | |
234 | /* This is the next file number to use. */ | |
235 | ||
573aba85 | 236 | static GTY(()) int next_file_number; |
237 | ||
cf8e41a4 | 238 | /* A counter for dbxout_function_end. */ |
38ac91bf | 239 | |
cf8e41a4 | 240 | static GTY(()) int scope_labelno; |
38ac91bf | 241 | |
b1bd5ac9 | 242 | /* A counter for dbxout_source_line. */ |
243 | ||
244 | static GTY(()) int dbxout_source_line_counter; | |
245 | ||
573aba85 | 246 | /* Number for the next N_SOL filename stabs label. The number 0 is reserved |
247 | for the N_SO filename stabs label. */ | |
248 | ||
cf8e41a4 | 249 | static GTY(()) int source_label_number = 1; |
250 | ||
251 | /* Last source file name mentioned in a NOTE insn. */ | |
252 | ||
253 | static GTY(()) const char *lastfile; | |
254 | ||
255 | /* Used by PCH machinery to detect if 'lastfile' should be reset to | |
256 | base_input_file. */ | |
257 | static GTY(()) int lastfile_is_base; | |
258 | ||
259 | /* Typical USG systems don't have stab.h, and they also have | |
260 | no use for DBX-format debugging info. */ | |
261 | ||
262 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) | |
263 | ||
241af3cc | 264 | #ifdef DBX_USE_BINCL |
265 | /* If zero then there is no pending BINCL. */ | |
266 | static int pending_bincls = 0; | |
267 | #endif | |
268 | ||
cf8e41a4 | 269 | /* The original input file name. */ |
270 | static const char *base_input_file; | |
271 | ||
573aba85 | 272 | #ifdef DEBUG_SYMS_TEXT |
2f14b1f9 | 273 | #define FORCE_TEXT switch_to_section (current_function_section ()) |
573aba85 | 274 | #else |
275 | #define FORCE_TEXT | |
276 | #endif | |
277 | ||
278 | #include "gstab.h" | |
279 | ||
573aba85 | 280 | /* 1 if PARM is passed to this function in memory. */ |
281 | ||
282 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
e16ceb8e | 283 | (MEM_P (DECL_INCOMING_RTL (PARM))) |
54ae7e56 | 284 | |
573aba85 | 285 | /* A C expression for the integer offset value of an automatic variable |
286 | (N_LSYM) having address X (an RTX). */ | |
287 | #ifndef DEBUGGER_AUTO_OFFSET | |
288 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
289 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
290 | #endif | |
291 | ||
292 | /* A C expression for the integer offset value of an argument (N_PSYM) | |
7739e598 | 293 | having address X (an RTX). The nominal offset is OFFSET. |
294 | Note that we use OFFSET + 0 here to avoid the self-assign warning | |
295 | when the macro is called in a context like | |
296 | number = DEBUGGER_ARG_OFFSET(number, X) */ | |
573aba85 | 297 | #ifndef DEBUGGER_ARG_OFFSET |
7739e598 | 298 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET + 0) |
573aba85 | 299 | #endif |
300 | ||
d0de818d | 301 | /* This obstack holds the stab string currently being constructed. We |
302 | build it up here, then write it out, so we can split long lines up | |
303 | properly (see dbxout_finish_complex_stabs). */ | |
304 | static struct obstack stabstr_ob; | |
305 | static size_t stabstr_last_contin_point; | |
946754ae | 306 | |
b0eb97d5 | 307 | #ifdef DBX_USE_BINCL |
51cec339 | 308 | static void emit_bincl_stab (const char *c); |
309 | static void emit_pending_bincls (void); | |
2a3d2f63 | 310 | #endif |
51cec339 | 311 | static inline void emit_pending_bincls_if_required (void); |
312 | ||
8ec3a57b | 313 | static void dbxout_init (const char *); |
48e1416a | 314 | |
8ec3a57b | 315 | static void dbxout_finish (const char *); |
316 | static void dbxout_start_source_file (unsigned, const char *); | |
317 | static void dbxout_end_source_file (unsigned); | |
318 | static void dbxout_typedefs (tree); | |
8ec3a57b | 319 | static void dbxout_type_index (tree); |
8ec3a57b | 320 | static void dbxout_args (tree); |
321 | static void dbxout_type_fields (tree); | |
d0de818d | 322 | static void dbxout_type_method_1 (tree); |
8ec3a57b | 323 | static void dbxout_type_methods (tree); |
a9538d68 | 324 | static void dbxout_range_type (tree, tree, tree); |
8ec3a57b | 325 | static void dbxout_type (tree, int); |
a9538d68 | 326 | static bool print_int_cst_bounds_in_octal_p (tree, tree, tree); |
a12691f0 | 327 | static bool is_fortran (void); |
8ec3a57b | 328 | static void dbxout_type_name (tree); |
329 | static void dbxout_class_name_qualifiers (tree); | |
330 | static int dbxout_symbol_location (tree, tree, const char *, rtx); | |
331 | static void dbxout_symbol_name (tree, const char *, int); | |
c1e61953 | 332 | static void dbxout_common_name (tree, const char *, stab_code_type); |
a12691f0 | 333 | static const char *dbxout_common_check (tree, int *); |
3a1c9df2 | 334 | static void dbxout_early_global_decl (tree); |
335 | static void dbxout_late_global_decl (tree); | |
fdcda623 | 336 | static void dbxout_type_decl (tree, int); |
8ec3a57b | 337 | static void dbxout_handle_pch (unsigned); |
00e3fe44 | 338 | static void debug_free_queue (void); |
946754ae | 339 | \f |
c140b944 | 340 | /* The debug hooks structure. */ |
1dff614c | 341 | #if defined (DBX_DEBUGGING_INFO) |
342 | ||
1488fe24 | 343 | static void dbxout_source_line (unsigned int, const char *, int, bool); |
4ec92916 | 344 | static void dbxout_begin_prologue (unsigned int, const char *); |
d0de818d | 345 | static void dbxout_source_file (const char *); |
475c9f56 | 346 | static void dbxout_function_end (tree); |
8ec3a57b | 347 | static void dbxout_begin_function (tree); |
348 | static void dbxout_begin_block (unsigned, unsigned); | |
349 | static void dbxout_end_block (unsigned, unsigned); | |
350 | static void dbxout_function_decl (tree); | |
1dff614c | 351 | |
e42f6423 | 352 | const struct gcc_debug_hooks dbx_debug_hooks = |
b896d81b | 353 | { |
354 | dbxout_init, | |
c140b944 | 355 | dbxout_finish, |
47306a5d | 356 | debug_nothing_void, |
3a1c9df2 | 357 | debug_nothing_void, |
c140b944 | 358 | debug_nothing_int_charstar, |
359 | debug_nothing_int_charstar, | |
360 | dbxout_start_source_file, | |
1dff614c | 361 | dbxout_end_source_file, |
362 | dbxout_begin_block, | |
b9b7f8b4 | 363 | dbxout_end_block, |
5493cb9a | 364 | debug_true_const_tree, /* ignore_block */ |
2b49746a | 365 | dbxout_source_line, /* source_line */ |
4ec92916 | 366 | dbxout_begin_prologue, /* begin_prologue */ |
2b49746a | 367 | debug_nothing_int_charstar, /* end_prologue */ |
cfe7b52e | 368 | debug_nothing_int_charstar, /* begin_epilogue */ |
2b49746a | 369 | debug_nothing_int_charstar, /* end_epilogue */ |
f76df888 | 370 | #ifdef DBX_FUNCTION_FIRST |
371 | dbxout_begin_function, | |
372 | #else | |
2b49746a | 373 | debug_nothing_tree, /* begin_function */ |
f76df888 | 374 | #endif |
2b49746a | 375 | debug_nothing_int, /* end_function */ |
f2023823 | 376 | debug_nothing_tree, /* register_main_translation_unit */ |
c37d72e9 | 377 | dbxout_function_decl, |
3a1c9df2 | 378 | dbxout_early_global_decl, /* early_global_decl */ |
379 | dbxout_late_global_decl, /* late_global_decl */ | |
73ae3ef7 | 380 | dbxout_type_decl, /* type_decl */ |
df4d540f | 381 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
2b49746a | 382 | debug_nothing_tree, /* deferred_inline_function */ |
383 | debug_nothing_tree, /* outlining_inline_function */ | |
3352ba19 | 384 | debug_nothing_rtx_code_label, /* label */ |
5923a5e7 | 385 | dbxout_handle_pch, /* handle_pch */ |
3352ba19 | 386 | debug_nothing_rtx_insn, /* var_location */ |
1897b881 | 387 | debug_nothing_void, /* switch_text_section */ |
8d17cbdd | 388 | debug_nothing_tree_tree, /* set_name */ |
929d2a90 | 389 | 0, /* start_end_main_source_file */ |
390 | TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */ | |
b896d81b | 391 | }; |
1dff614c | 392 | #endif /* DBX_DEBUGGING_INFO */ |
393 | ||
394 | #if defined (XCOFF_DEBUGGING_INFO) | |
e42f6423 | 395 | const struct gcc_debug_hooks xcoff_debug_hooks = |
1dff614c | 396 | { |
397 | dbxout_init, | |
398 | dbxout_finish, | |
47306a5d | 399 | debug_nothing_void, |
3a1c9df2 | 400 | debug_nothing_void, |
1dff614c | 401 | debug_nothing_int_charstar, |
402 | debug_nothing_int_charstar, | |
403 | dbxout_start_source_file, | |
404 | dbxout_end_source_file, | |
405 | xcoffout_begin_block, | |
b9b7f8b4 | 406 | xcoffout_end_block, |
5493cb9a | 407 | debug_true_const_tree, /* ignore_block */ |
b9b7f8b4 | 408 | xcoffout_source_line, |
2b49746a | 409 | xcoffout_begin_prologue, /* begin_prologue */ |
410 | debug_nothing_int_charstar, /* end_prologue */ | |
cfe7b52e | 411 | debug_nothing_int_charstar, /* begin_epilogue */ |
b9b7f8b4 | 412 | xcoffout_end_epilogue, |
2b49746a | 413 | debug_nothing_tree, /* begin_function */ |
c37d72e9 | 414 | xcoffout_end_function, |
0eaf0c44 | 415 | debug_nothing_tree, /* register_main_translation_unit */ |
2b49746a | 416 | debug_nothing_tree, /* function_decl */ |
3a1c9df2 | 417 | dbxout_early_global_decl, /* early_global_decl */ |
418 | dbxout_late_global_decl, /* late_global_decl */ | |
73ae3ef7 | 419 | dbxout_type_decl, /* type_decl */ |
df4d540f | 420 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
2b49746a | 421 | debug_nothing_tree, /* deferred_inline_function */ |
422 | debug_nothing_tree, /* outlining_inline_function */ | |
3352ba19 | 423 | debug_nothing_rtx_code_label, /* label */ |
5923a5e7 | 424 | dbxout_handle_pch, /* handle_pch */ |
3352ba19 | 425 | debug_nothing_rtx_insn, /* var_location */ |
1897b881 | 426 | debug_nothing_void, /* switch_text_section */ |
9207eb25 | 427 | debug_nothing_tree_tree, /* set_name */ |
929d2a90 | 428 | 0, /* start_end_main_source_file */ |
429 | TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */ | |
1dff614c | 430 | }; |
431 | #endif /* XCOFF_DEBUGGING_INFO */ | |
b896d81b | 432 | \f |
d0de818d | 433 | /* Numeric formatting helper macro. Note that this does not handle |
434 | hexadecimal. */ | |
435 | #define NUMBER_FMT_LOOP(P, NUM, BASE) \ | |
436 | do \ | |
437 | { \ | |
438 | int digit = NUM % BASE; \ | |
439 | NUM /= BASE; \ | |
440 | *--P = digit + '0'; \ | |
441 | } \ | |
442 | while (NUM > 0) | |
443 | ||
444 | /* Utility: write a decimal integer NUM to asm_out_file. */ | |
445 | void | |
446 | dbxout_int (int num) | |
447 | { | |
448 | char buf[64]; | |
449 | char *p = buf + sizeof buf; | |
450 | unsigned int unum; | |
451 | ||
452 | if (num == 0) | |
453 | { | |
454 | putc ('0', asm_out_file); | |
455 | return; | |
456 | } | |
457 | if (num < 0) | |
458 | { | |
459 | putc ('-', asm_out_file); | |
460 | unum = -num; | |
461 | } | |
462 | else | |
463 | unum = num; | |
464 | ||
465 | NUMBER_FMT_LOOP (p, unum, 10); | |
466 | ||
467 | while (p < buf + sizeof buf) | |
468 | { | |
469 | putc (*p, asm_out_file); | |
470 | p++; | |
471 | } | |
472 | } | |
473 | ||
474 | \f | |
475 | /* Primitives for emitting simple stabs directives. All other stabs | |
476 | routines should use these functions instead of directly emitting | |
477 | stabs. They are exported because machine-dependent code may need | |
478 | to invoke them, e.g. in a DBX_OUTPUT_* macro whose definition | |
479 | forwards to code in CPU.c. */ | |
480 | ||
481 | /* The following functions should all be called immediately after one | |
482 | of the dbxout_begin_stab* functions (below). They write out | |
483 | various things as the value of a stab. */ | |
484 | ||
485 | /* Write out a literal zero as the value of a stab. */ | |
486 | void | |
487 | dbxout_stab_value_zero (void) | |
488 | { | |
489 | fputs ("0\n", asm_out_file); | |
490 | } | |
491 | ||
492 | /* Write out the label LABEL as the value of a stab. */ | |
493 | void | |
494 | dbxout_stab_value_label (const char *label) | |
495 | { | |
496 | assemble_name (asm_out_file, label); | |
497 | putc ('\n', asm_out_file); | |
498 | } | |
499 | ||
500 | /* Write out the difference of two labels, LABEL - BASE, as the value | |
501 | of a stab. */ | |
502 | void | |
503 | dbxout_stab_value_label_diff (const char *label, const char *base) | |
504 | { | |
505 | assemble_name (asm_out_file, label); | |
506 | putc ('-', asm_out_file); | |
507 | assemble_name (asm_out_file, base); | |
508 | putc ('\n', asm_out_file); | |
509 | } | |
510 | ||
511 | /* Write out an internal label as the value of a stab, and immediately | |
512 | emit that internal label. This should be used only when | |
513 | dbxout_stabd will not work. STEM is the name stem of the label, | |
514 | COUNTERP is a pointer to a counter variable which will be used to | |
515 | guarantee label uniqueness. */ | |
516 | void | |
517 | dbxout_stab_value_internal_label (const char *stem, int *counterp) | |
518 | { | |
519 | char label[100]; | |
520 | int counter = counterp ? (*counterp)++ : 0; | |
521 | ||
522 | ASM_GENERATE_INTERNAL_LABEL (label, stem, counter); | |
523 | dbxout_stab_value_label (label); | |
524 | targetm.asm_out.internal_label (asm_out_file, stem, counter); | |
525 | } | |
526 | ||
527 | /* Write out the difference between BASE and an internal label as the | |
528 | value of a stab, and immediately emit that internal label. STEM and | |
529 | COUNTERP are as for dbxout_stab_value_internal_label. */ | |
530 | void | |
531 | dbxout_stab_value_internal_label_diff (const char *stem, int *counterp, | |
532 | const char *base) | |
533 | { | |
534 | char label[100]; | |
535 | int counter = counterp ? (*counterp)++ : 0; | |
536 | ||
537 | ASM_GENERATE_INTERNAL_LABEL (label, stem, counter); | |
538 | dbxout_stab_value_label_diff (label, base); | |
539 | targetm.asm_out.internal_label (asm_out_file, stem, counter); | |
540 | } | |
541 | ||
542 | /* The following functions produce specific kinds of stab directives. */ | |
543 | ||
544 | /* Write a .stabd directive with type STYPE and desc SDESC to asm_out_file. */ | |
545 | void | |
546 | dbxout_stabd (int stype, int sdesc) | |
547 | { | |
548 | fputs (ASM_STABD_OP, asm_out_file); | |
549 | dbxout_int (stype); | |
550 | fputs (",0,", asm_out_file); | |
551 | dbxout_int (sdesc); | |
552 | putc ('\n', asm_out_file); | |
553 | } | |
554 | ||
555 | /* Write a .stabn directive with type STYPE. This function stops | |
556 | short of emitting the value field, which is the responsibility of | |
557 | the caller (normally it will be either a symbol or the difference | |
558 | of two symbols). */ | |
559 | ||
560 | void | |
561 | dbxout_begin_stabn (int stype) | |
562 | { | |
563 | fputs (ASM_STABN_OP, asm_out_file); | |
564 | dbxout_int (stype); | |
565 | fputs (",0,0,", asm_out_file); | |
566 | } | |
567 | ||
568 | /* Write a .stabn directive with type N_SLINE and desc LINE. As above, | |
569 | the value field is the responsibility of the caller. */ | |
570 | void | |
571 | dbxout_begin_stabn_sline (int lineno) | |
572 | { | |
573 | fputs (ASM_STABN_OP, asm_out_file); | |
574 | dbxout_int (N_SLINE); | |
575 | fputs (",0,", asm_out_file); | |
576 | dbxout_int (lineno); | |
577 | putc (',', asm_out_file); | |
578 | } | |
579 | ||
580 | /* Begin a .stabs directive with string "", type STYPE, and desc and | |
581 | other fields 0. The value field is the responsibility of the | |
582 | caller. This function cannot be used for .stabx directives. */ | |
583 | void | |
584 | dbxout_begin_empty_stabs (int stype) | |
585 | { | |
586 | fputs (ASM_STABS_OP, asm_out_file); | |
587 | fputs ("\"\",", asm_out_file); | |
588 | dbxout_int (stype); | |
589 | fputs (",0,0,", asm_out_file); | |
590 | } | |
591 | ||
592 | /* Begin a .stabs directive with string STR, type STYPE, and desc 0. | |
593 | The value field is the responsibility of the caller. */ | |
594 | void | |
595 | dbxout_begin_simple_stabs (const char *str, int stype) | |
596 | { | |
597 | fputs (ASM_STABS_OP, asm_out_file); | |
598 | output_quoted_string (asm_out_file, str); | |
599 | putc (',', asm_out_file); | |
600 | dbxout_int (stype); | |
601 | fputs (",0,0,", asm_out_file); | |
602 | } | |
603 | ||
604 | /* As above but use SDESC for the desc field. */ | |
605 | void | |
606 | dbxout_begin_simple_stabs_desc (const char *str, int stype, int sdesc) | |
607 | { | |
608 | fputs (ASM_STABS_OP, asm_out_file); | |
609 | output_quoted_string (asm_out_file, str); | |
610 | putc (',', asm_out_file); | |
611 | dbxout_int (stype); | |
612 | fputs (",0,", asm_out_file); | |
613 | dbxout_int (sdesc); | |
614 | putc (',', asm_out_file); | |
615 | } | |
616 | ||
617 | /* The next set of functions are entirely concerned with production of | |
618 | "complex" .stabs directives: that is, .stabs directives whose | |
619 | strings have to be constructed piecemeal. dbxout_type, | |
620 | dbxout_symbol, etc. use these routines heavily. The string is queued | |
621 | up in an obstack, then written out by dbxout_finish_complex_stabs, which | |
622 | is also responsible for splitting it up if it exceeds DBX_CONTIN_LENGTH. | |
623 | (You might think it would be more efficient to go straight to stdio | |
624 | when DBX_CONTIN_LENGTH is 0 (i.e. no length limit) but that turns | |
625 | out not to be the case, and anyway this needs fewer #ifdefs.) */ | |
626 | ||
627 | /* Begin a complex .stabs directive. If we can, write the initial | |
628 | ASM_STABS_OP to the asm_out_file. */ | |
629 | ||
630 | static void | |
631 | dbxout_begin_complex_stabs (void) | |
632 | { | |
633 | emit_pending_bincls_if_required (); | |
634 | FORCE_TEXT; | |
635 | fputs (ASM_STABS_OP, asm_out_file); | |
636 | putc ('"', asm_out_file); | |
637 | gcc_assert (stabstr_last_contin_point == 0); | |
638 | } | |
639 | ||
8a2df6f8 | 640 | /* As above, but do not force text or emit pending bincls. This is |
641 | used by dbxout_symbol_location, which needs to do something else. */ | |
642 | static void | |
643 | dbxout_begin_complex_stabs_noforcetext (void) | |
644 | { | |
645 | fputs (ASM_STABS_OP, asm_out_file); | |
646 | putc ('"', asm_out_file); | |
647 | gcc_assert (stabstr_last_contin_point == 0); | |
648 | } | |
649 | ||
d0de818d | 650 | /* Add CHR, a single character, to the string being built. */ |
651 | #define stabstr_C(chr) obstack_1grow (&stabstr_ob, chr) | |
652 | ||
653 | /* Add STR, a normal C string, to the string being built. */ | |
9af5ce0c | 654 | #define stabstr_S(str) obstack_grow (&stabstr_ob, str, strlen (str)) |
d0de818d | 655 | |
656 | /* Add the text of ID, an IDENTIFIER_NODE, to the string being built. */ | |
657 | #define stabstr_I(id) obstack_grow (&stabstr_ob, \ | |
658 | IDENTIFIER_POINTER (id), \ | |
659 | IDENTIFIER_LENGTH (id)) | |
660 | ||
661 | /* Add NUM, a signed decimal number, to the string being built. */ | |
662 | static void | |
663 | stabstr_D (HOST_WIDE_INT num) | |
664 | { | |
665 | char buf[64]; | |
666 | char *p = buf + sizeof buf; | |
667 | unsigned int unum; | |
668 | ||
669 | if (num == 0) | |
670 | { | |
671 | stabstr_C ('0'); | |
672 | return; | |
673 | } | |
674 | if (num < 0) | |
675 | { | |
676 | stabstr_C ('-'); | |
677 | unum = -num; | |
678 | } | |
679 | else | |
680 | unum = num; | |
681 | ||
682 | NUMBER_FMT_LOOP (p, unum, 10); | |
683 | ||
684 | obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p); | |
685 | } | |
686 | ||
687 | /* Add NUM, an unsigned decimal number, to the string being built. */ | |
688 | static void | |
689 | stabstr_U (unsigned HOST_WIDE_INT num) | |
690 | { | |
691 | char buf[64]; | |
692 | char *p = buf + sizeof buf; | |
693 | if (num == 0) | |
694 | { | |
695 | stabstr_C ('0'); | |
696 | return; | |
697 | } | |
698 | NUMBER_FMT_LOOP (p, num, 10); | |
699 | obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p); | |
700 | } | |
701 | ||
702 | /* Add CST, an INTEGER_CST tree, to the string being built as an | |
703 | unsigned octal number. This routine handles values which are | |
704 | larger than a single HOST_WIDE_INT. */ | |
705 | static void | |
706 | stabstr_O (tree cst) | |
707 | { | |
ab2c1de8 | 708 | int prec = TYPE_PRECISION (TREE_TYPE (cst)); |
e913b5cd | 709 | int res_pres = prec % 3; |
710 | int i; | |
711 | unsigned int digit; | |
d0de818d | 712 | |
713 | /* Leading zero for base indicator. */ | |
714 | stabstr_C ('0'); | |
715 | ||
716 | /* If the value is zero, the base indicator will serve as the value | |
717 | all by itself. */ | |
ab2c1de8 | 718 | if (wi::eq_p (cst, 0)) |
d0de818d | 719 | return; |
720 | ||
e913b5cd | 721 | /* GDB wants constants with no extra leading "1" bits, so |
722 | we need to remove any sign-extension that might be | |
723 | present. */ | |
724 | if (res_pres == 1) | |
d0de818d | 725 | { |
ab2c1de8 | 726 | digit = wi::extract_uhwi (cst, prec - 1, 1); |
e913b5cd | 727 | stabstr_C ('0' + digit); |
728 | } | |
729 | else if (res_pres == 2) | |
730 | { | |
ab2c1de8 | 731 | digit = wi::extract_uhwi (cst, prec - 2, 2); |
e913b5cd | 732 | stabstr_C ('0' + digit); |
d0de818d | 733 | } |
734 | ||
e913b5cd | 735 | prec -= res_pres; |
6558a2fd | 736 | for (i = prec - 3; i >= 0; i = i - 3) |
e913b5cd | 737 | { |
ab2c1de8 | 738 | digit = wi::extract_uhwi (cst, i, 3); |
e913b5cd | 739 | stabstr_C ('0' + digit); |
740 | } | |
d0de818d | 741 | } |
742 | ||
743 | /* Called whenever it is safe to break a stabs string into multiple | |
744 | .stabs directives. If the current string has exceeded the limit | |
745 | set by DBX_CONTIN_LENGTH, mark the current position in the buffer | |
746 | as a continuation point by inserting DBX_CONTIN_CHAR (doubled if | |
747 | it is a backslash) and a null character. */ | |
748 | static inline void | |
749 | stabstr_continue (void) | |
750 | { | |
751 | if (DBX_CONTIN_LENGTH > 0 | |
752 | && obstack_object_size (&stabstr_ob) - stabstr_last_contin_point | |
753 | > DBX_CONTIN_LENGTH) | |
754 | { | |
755 | if (DBX_CONTIN_CHAR == '\\') | |
756 | obstack_1grow (&stabstr_ob, '\\'); | |
757 | obstack_1grow (&stabstr_ob, DBX_CONTIN_CHAR); | |
758 | obstack_1grow (&stabstr_ob, '\0'); | |
759 | stabstr_last_contin_point = obstack_object_size (&stabstr_ob); | |
760 | } | |
761 | } | |
762 | #define CONTIN stabstr_continue () | |
763 | ||
764 | /* Macro subroutine of dbxout_finish_complex_stabs, which emits | |
765 | all of the arguments to the .stabs directive after the string. | |
766 | Overridden by xcoffout.h. CODE is the stabs code for this symbol; | |
767 | LINE is the source line to write into the desc field (in extended | |
8a2df6f8 | 768 | mode); SYM is the symbol itself. |
d0de818d | 769 | |
770 | ADDR, LABEL, and NUMBER are three different ways to represent the | |
771 | stabs value field. At most one of these should be nonzero. | |
772 | ||
773 | ADDR is used most of the time; it represents the value as an | |
774 | RTL address constant. | |
775 | ||
776 | LABEL is used (currently) only for N_CATCH stabs; it represents | |
777 | the value as a string suitable for assemble_name. | |
778 | ||
779 | NUMBER is used when the value is an offset from an implicit base | |
780 | pointer (e.g. for a stack variable), or an index (e.g. for a | |
781 | register variable). It represents the value as a decimal integer. */ | |
782 | ||
783 | #ifndef DBX_FINISH_STABS | |
8a2df6f8 | 784 | #define DBX_FINISH_STABS(SYM, CODE, LINE, ADDR, LABEL, NUMBER) \ |
785 | do { \ | |
d0de818d | 786 | int line_ = use_gnu_debug_info_extensions ? LINE : 0; \ |
787 | \ | |
788 | dbxout_int (CODE); \ | |
789 | fputs (",0,", asm_out_file); \ | |
790 | dbxout_int (line_); \ | |
791 | putc (',', asm_out_file); \ | |
792 | if (ADDR) \ | |
793 | output_addr_const (asm_out_file, ADDR); \ | |
794 | else if (LABEL) \ | |
795 | assemble_name (asm_out_file, LABEL); \ | |
796 | else \ | |
797 | dbxout_int (NUMBER); \ | |
798 | putc ('\n', asm_out_file); \ | |
799 | } while (0) | |
800 | #endif | |
801 | ||
802 | /* Finish the emission of a complex .stabs directive. When DBX_CONTIN_LENGTH | |
803 | is zero, this has only to emit the close quote and the remainder of | |
804 | the arguments. When it is nonzero, the string has been marshalled in | |
805 | stabstr_ob, and this routine is responsible for breaking it up into | |
806 | DBX_CONTIN_LENGTH-sized chunks. | |
807 | ||
808 | SYM is the DECL of the symbol under consideration; it is used only | |
809 | for its DECL_SOURCE_LINE. The other arguments are all passed directly | |
810 | to DBX_FINISH_STABS; see above for details. */ | |
48e1416a | 811 | |
d0de818d | 812 | static void |
c1e61953 | 813 | dbxout_finish_complex_stabs (tree sym, stab_code_type code, |
d0de818d | 814 | rtx addr, const char *label, int number) |
815 | { | |
16d1038e | 816 | int line ATTRIBUTE_UNUSED; |
d0de818d | 817 | char *str; |
818 | size_t len; | |
819 | ||
16d1038e | 820 | line = sym ? DECL_SOURCE_LINE (sym) : 0; |
d0de818d | 821 | if (DBX_CONTIN_LENGTH > 0) |
822 | { | |
823 | char *chunk; | |
824 | size_t chunklen; | |
825 | ||
826 | /* Nul-terminate the growing string, then get its size and | |
827 | address. */ | |
828 | obstack_1grow (&stabstr_ob, '\0'); | |
829 | ||
830 | len = obstack_object_size (&stabstr_ob); | |
4fac984f | 831 | chunk = str = XOBFINISH (&stabstr_ob, char *); |
d0de818d | 832 | |
833 | /* Within the buffer are a sequence of NUL-separated strings, | |
834 | each of which is to be written out as a separate stab | |
835 | directive. */ | |
836 | for (;;) | |
837 | { | |
838 | chunklen = strlen (chunk); | |
839 | fwrite (chunk, 1, chunklen, asm_out_file); | |
840 | fputs ("\",", asm_out_file); | |
841 | ||
842 | /* Must add an extra byte to account for the NUL separator. */ | |
843 | chunk += chunklen + 1; | |
844 | len -= chunklen + 1; | |
845 | ||
846 | /* Only put a line number on the last stab in the sequence. */ | |
8a2df6f8 | 847 | DBX_FINISH_STABS (sym, code, len == 0 ? line : 0, |
848 | addr, label, number); | |
d0de818d | 849 | if (len == 0) |
850 | break; | |
851 | ||
852 | fputs (ASM_STABS_OP, asm_out_file); | |
853 | putc ('"', asm_out_file); | |
854 | } | |
855 | stabstr_last_contin_point = 0; | |
856 | } | |
857 | else | |
858 | { | |
859 | /* No continuations - we can put the whole string out at once. | |
860 | It is faster to augment the string with the close quote and | |
861 | comma than to do a two-character fputs. */ | |
862 | obstack_grow (&stabstr_ob, "\",", 2); | |
863 | len = obstack_object_size (&stabstr_ob); | |
4fac984f | 864 | str = XOBFINISH (&stabstr_ob, char *); |
48e1416a | 865 | |
d0de818d | 866 | fwrite (str, 1, len, asm_out_file); |
8a2df6f8 | 867 | DBX_FINISH_STABS (sym, code, line, addr, label, number); |
d0de818d | 868 | } |
869 | obstack_free (&stabstr_ob, str); | |
870 | } | |
871 | ||
96df1423 | 872 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
d0de818d | 873 | |
7f146d20 | 874 | /* When -gused is used, emit debug info for only used symbols. But in |
875 | addition to the standard intercepted debug_hooks there are some | |
876 | direct calls into this file, i.e., dbxout_symbol, dbxout_parms, and | |
877 | dbxout_reg_params. Those routines may also be called from a higher | |
878 | level intercepted routine. So to prevent recording data for an inner | |
879 | call to one of these for an intercept, we maintain an intercept | |
880 | nesting counter (debug_nesting). We only save the intercepted | |
881 | arguments if the nesting is 1. */ | |
882 | static int debug_nesting = 0; | |
883 | ||
884 | static tree *symbol_queue; | |
885 | static int symbol_queue_index = 0; | |
886 | static int symbol_queue_size = 0; | |
887 | ||
888 | #define DBXOUT_DECR_NESTING \ | |
889 | if (--debug_nesting == 0 && symbol_queue_index > 0) \ | |
890 | { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); } | |
891 | ||
892 | #define DBXOUT_DECR_NESTING_AND_RETURN(x) \ | |
893 | do {--debug_nesting; return (x);} while (0) | |
894 | ||
96df1423 | 895 | #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */ |
896 | ||
897 | #if defined (DBX_DEBUGGING_INFO) | |
898 | ||
f6e3ef26 | 899 | static void |
888bd5c2 | 900 | dbxout_function_end (tree decl ATTRIBUTE_UNUSED) |
f6e3ef26 | 901 | { |
902 | char lscope_label_name[100]; | |
4f18499c | 903 | |
28a5f832 | 904 | /* The Lscope label must be emitted even if we aren't doing anything |
905 | else; dbxout_block needs it. */ | |
2f14b1f9 | 906 | switch_to_section (function_section (current_function_decl)); |
48e1416a | 907 | |
d0de818d | 908 | /* Convert Lscope into the appropriate format for local labels in case |
f6e3ef26 | 909 | the system doesn't insert underscores in front of user generated |
910 | labels. */ | |
ff1a5b4a | 911 | ASM_GENERATE_INTERNAL_LABEL (lscope_label_name, "Lscope", scope_labelno); |
912 | targetm.asm_out.internal_label (asm_out_file, "Lscope", scope_labelno); | |
f6e3ef26 | 913 | |
03f8fdbe | 914 | /* The N_FUN tag at the end of the function is a GNU extension, |
915 | which may be undesirable, and is unnecessary if we do not have | |
916 | named sections. */ | |
917 | if (!use_gnu_debug_info_extensions | |
918 | || NO_DBX_FUNCTION_END | |
218e3e4e | 919 | || !targetm_common.have_named_sections) |
03f8fdbe | 920 | return; |
921 | ||
f6e3ef26 | 922 | /* By convention, GCC will mark the end of a function with an N_FUN |
923 | symbol and an empty string. */ | |
1897b881 | 924 | if (flag_reorder_blocks_and_partition) |
925 | { | |
926 | dbxout_begin_empty_stabs (N_FUN); | |
48e1416a | 927 | dbxout_stab_value_label_diff (crtl->subsections.hot_section_end_label, |
abe32cce | 928 | crtl->subsections.hot_section_label); |
1897b881 | 929 | dbxout_begin_empty_stabs (N_FUN); |
48e1416a | 930 | dbxout_stab_value_label_diff (crtl->subsections.cold_section_end_label, |
abe32cce | 931 | crtl->subsections.cold_section_label); |
1897b881 | 932 | } |
933 | else | |
934 | { | |
a6e8892a | 935 | char begin_label[20]; |
936 | /* Reference current function start using LFBB. */ | |
ff1a5b4a | 937 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); |
1897b881 | 938 | dbxout_begin_empty_stabs (N_FUN); |
a6e8892a | 939 | dbxout_stab_value_label_diff (lscope_label_name, begin_label); |
1897b881 | 940 | } |
4ec92916 | 941 | |
7d6171f2 | 942 | if (!NO_DBX_BNSYM_ENSYM && !flag_debug_only_used_symbols) |
d0de818d | 943 | dbxout_stabd (N_ENSYM, 0); |
f6e3ef26 | 944 | } |
0c87a39e | 945 | #endif /* DBX_DEBUGGING_INFO */ |
f6e3ef26 | 946 | |
913910e0 | 947 | /* Get lang description for N_SO stab. */ |
d0de818d | 948 | static unsigned int ATTRIBUTE_UNUSED |
913910e0 | 949 | get_lang_number (void) |
950 | { | |
951 | const char *language_string = lang_hooks.name; | |
3a4a2292 | 952 | if (lang_GNU_C ()) |
913910e0 | 953 | return N_SO_C; |
3a4a2292 | 954 | else if (lang_GNU_CXX ()) |
913910e0 | 955 | return N_SO_CC; |
956 | else if (strcmp (language_string, "GNU F77") == 0) | |
957 | return N_SO_FORTRAN; | |
f36f9b8b | 958 | else if (lang_GNU_Fortran ()) |
913910e0 | 959 | return N_SO_FORTRAN90; /* CHECKME */ |
960 | else if (strcmp (language_string, "GNU Pascal") == 0) | |
961 | return N_SO_PASCAL; | |
962 | else if (strcmp (language_string, "GNU Objective-C") == 0) | |
963 | return N_SO_OBJC; | |
ddb5d39d | 964 | else if (strcmp (language_string, "GNU Objective-C++") == 0) |
965 | return N_SO_OBJCPLUS; | |
913910e0 | 966 | else |
967 | return 0; | |
968 | ||
969 | } | |
970 | ||
a12691f0 | 971 | static bool |
972 | is_fortran (void) | |
973 | { | |
974 | unsigned int lang = get_lang_number (); | |
975 | ||
976 | return (lang == N_SO_FORTRAN) || (lang == N_SO_FORTRAN90); | |
977 | } | |
978 | ||
946754ae | 979 | /* At the beginning of compilation, start writing the symbol table. |
980 | Initialize `typevec' and output the standard data types of C. */ | |
981 | ||
b896d81b | 982 | static void |
8ec3a57b | 983 | dbxout_init (const char *input_file_name) |
946754ae | 984 | { |
985 | char ltext_label_name[100]; | |
d0de818d | 986 | bool used_ltext_label_name = false; |
dc24ddbd | 987 | tree syms = lang_hooks.decls.getdecls (); |
5f1f2de5 | 988 | const char *mapped_name; |
946754ae | 989 | |
946754ae | 990 | typevec_len = 100; |
25a27413 | 991 | typevec = ggc_cleared_vec_alloc<typeinfo> (typevec_len); |
946754ae | 992 | |
d0de818d | 993 | /* stabstr_ob contains one string, which will be just fine with |
994 | 1-byte alignment. */ | |
995 | obstack_specify_allocation (&stabstr_ob, 0, 1, xmalloc, free); | |
996 | ||
946754ae | 997 | /* Convert Ltext into the appropriate format for local labels in case |
998 | the system doesn't insert underscores in front of user generated | |
999 | labels. */ | |
1000 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
1001 | ||
1002 | /* Put the current working directory in an N_SO symbol. */ | |
d0de818d | 1003 | if (use_gnu_debug_info_extensions && !NO_DBX_MAIN_SOURCE_DIRECTORY) |
439c05a0 | 1004 | { |
52cae7bf | 1005 | static const char *cwd; |
1006 | ||
1007 | if (!cwd) | |
439c05a0 | 1008 | { |
52cae7bf | 1009 | cwd = get_src_pwd (); |
1010 | if (cwd[0] == '\0') | |
1011 | cwd = "/"; | |
1012 | else if (!IS_DIR_SEPARATOR (cwd[strlen (cwd) - 1])) | |
1013 | cwd = concat (cwd, "/", NULL); | |
5f1f2de5 | 1014 | cwd = remap_debug_filename (cwd); |
52cae7bf | 1015 | } |
946754ae | 1016 | #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY |
52cae7bf | 1017 | DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asm_out_file, cwd); |
946754ae | 1018 | #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
d0de818d | 1019 | dbxout_begin_simple_stabs_desc (cwd, N_SO, get_lang_number ()); |
1020 | dbxout_stab_value_label (ltext_label_name); | |
1021 | used_ltext_label_name = true; | |
946754ae | 1022 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
439c05a0 | 1023 | } |
946754ae | 1024 | |
5f1f2de5 | 1025 | mapped_name = remap_debug_filename (input_file_name); |
946754ae | 1026 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME |
5f1f2de5 | 1027 | DBX_OUTPUT_MAIN_SOURCE_FILENAME (asm_out_file, mapped_name); |
08c78c16 | 1028 | #else |
5f1f2de5 | 1029 | dbxout_begin_simple_stabs_desc (mapped_name, N_SO, get_lang_number ()); |
d0de818d | 1030 | dbxout_stab_value_label (ltext_label_name); |
1031 | used_ltext_label_name = true; | |
1032 | #endif | |
1033 | ||
1034 | if (used_ltext_label_name) | |
1035 | { | |
2f14b1f9 | 1036 | switch_to_section (text_section); |
d0de818d | 1037 | targetm.asm_out.internal_label (asm_out_file, "Ltext", 0); |
1038 | } | |
1039 | ||
52cae7bf | 1040 | /* Emit an N_OPT stab to indicate that this file was compiled by GCC. |
1041 | The string used is historical. */ | |
d0de818d | 1042 | #ifndef NO_DBX_GCC_MARKER |
1043 | dbxout_begin_simple_stabs ("gcc2_compiled.", N_OPT); | |
1044 | dbxout_stab_value_zero (); | |
08c78c16 | 1045 | #endif |
ec6884ea | 1046 | |
cf8e41a4 | 1047 | base_input_file = lastfile = input_file_name; |
946754ae | 1048 | |
1049 | next_type_number = 1; | |
946754ae | 1050 | |
54ae7e56 | 1051 | #ifdef DBX_USE_BINCL |
4c36ffe6 | 1052 | current_file = XNEW (struct dbx_file); |
54ae7e56 | 1053 | current_file->next = NULL; |
1054 | current_file->file_number = 0; | |
1055 | current_file->next_type_number = 1; | |
1056 | next_file_number = 1; | |
51cec339 | 1057 | current_file->prev = NULL; |
1058 | current_file->bincl_status = BINCL_NOT_REQUIRED; | |
1059 | current_file->pending_bincl_name = NULL; | |
54ae7e56 | 1060 | #endif |
1061 | ||
54bd1509 | 1062 | /* Get all permanent types that have typedef names, and output them |
1063 | all, except for those already output. Some language front ends | |
73ae3ef7 | 1064 | put these declarations in the top-level scope; some do not; |
1065 | the latter are responsible for calling debug_hooks->type_decl from | |
1066 | their record_builtin_type function. */ | |
946754ae | 1067 | dbxout_typedefs (syms); |
73ae3ef7 | 1068 | |
1069 | if (preinit_symbols) | |
1070 | { | |
1071 | tree t; | |
1072 | for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t)) | |
1073 | dbxout_symbol (TREE_VALUE (t), 0); | |
1074 | preinit_symbols = 0; | |
1075 | } | |
946754ae | 1076 | } |
1077 | ||
e9efa031 | 1078 | /* Output any typedef names for types described by TYPE_DECLs in SYMS. */ |
946754ae | 1079 | |
1080 | static void | |
8ec3a57b | 1081 | dbxout_typedefs (tree syms) |
946754ae | 1082 | { |
1767a056 | 1083 | for (; syms != NULL_TREE; syms = DECL_CHAIN (syms)) |
946754ae | 1084 | { |
946754ae | 1085 | if (TREE_CODE (syms) == TYPE_DECL) |
1086 | { | |
1087 | tree type = TREE_TYPE (syms); | |
1088 | if (TYPE_NAME (type) | |
1089 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
14ce540d | 1090 | && COMPLETE_OR_VOID_TYPE_P (type) |
946754ae | 1091 | && ! TREE_ASM_WRITTEN (TYPE_NAME (type))) |
1092 | dbxout_symbol (TYPE_NAME (type), 0); | |
1093 | } | |
1094 | } | |
1095 | } | |
1096 | ||
2a3d2f63 | 1097 | #ifdef DBX_USE_BINCL |
81d47035 | 1098 | /* Emit BINCL stab using given name. */ |
51cec339 | 1099 | static void |
1100 | emit_bincl_stab (const char *name) | |
1101 | { | |
d0de818d | 1102 | dbxout_begin_simple_stabs (name, N_BINCL); |
1103 | dbxout_stab_value_zero (); | |
51cec339 | 1104 | } |
1105 | ||
1106 | /* If there are pending bincls then it is time to emit all of them. */ | |
1107 | ||
1108 | static inline void | |
a046944b | 1109 | emit_pending_bincls_if_required (void) |
51cec339 | 1110 | { |
51cec339 | 1111 | if (pending_bincls) |
1112 | emit_pending_bincls (); | |
51cec339 | 1113 | } |
1114 | ||
1115 | /* Emit all pending bincls. */ | |
1116 | ||
1117 | static void | |
a046944b | 1118 | emit_pending_bincls (void) |
51cec339 | 1119 | { |
1120 | struct dbx_file *f = current_file; | |
1121 | ||
1122 | /* Find first pending bincl. */ | |
1123 | while (f->bincl_status == BINCL_PENDING) | |
1124 | f = f->next; | |
1125 | ||
1126 | /* Now emit all bincls. */ | |
1127 | f = f->prev; | |
1128 | ||
1129 | while (f) | |
1130 | { | |
1131 | if (f->bincl_status == BINCL_PENDING) | |
1132 | { | |
1133 | emit_bincl_stab (f->pending_bincl_name); | |
1134 | ||
1135 | /* Update file number and status. */ | |
1136 | f->file_number = next_file_number++; | |
1137 | f->bincl_status = BINCL_PROCESSED; | |
1138 | } | |
1139 | if (f == current_file) | |
1140 | break; | |
1141 | f = f->prev; | |
1142 | } | |
1143 | ||
1144 | /* All pending bincls have been emitted. */ | |
1145 | pending_bincls = 0; | |
1146 | } | |
1147 | ||
2a3d2f63 | 1148 | #else |
1149 | ||
1150 | static inline void | |
a046944b | 1151 | emit_pending_bincls_if_required (void) {} |
2a3d2f63 | 1152 | #endif |
1153 | ||
54ae7e56 | 1154 | /* Change to reading from a new source file. Generate a N_BINCL stab. */ |
1155 | ||
c140b944 | 1156 | static void |
8ec3a57b | 1157 | dbxout_start_source_file (unsigned int line ATTRIBUTE_UNUSED, |
1158 | const char *filename ATTRIBUTE_UNUSED) | |
54ae7e56 | 1159 | { |
1160 | #ifdef DBX_USE_BINCL | |
4c36ffe6 | 1161 | struct dbx_file *n = XNEW (struct dbx_file); |
54ae7e56 | 1162 | |
1163 | n->next = current_file; | |
54ae7e56 | 1164 | n->next_type_number = 1; |
48e1416a | 1165 | /* Do not assign file number now. |
51cec339 | 1166 | Delay it until we actually emit BINCL. */ |
1167 | n->file_number = 0; | |
1168 | n->prev = NULL; | |
1169 | current_file->prev = n; | |
1170 | n->bincl_status = BINCL_PENDING; | |
5f1f2de5 | 1171 | n->pending_bincl_name = remap_debug_filename (filename); |
51cec339 | 1172 | pending_bincls = 1; |
54ae7e56 | 1173 | current_file = n; |
54ae7e56 | 1174 | #endif |
1175 | } | |
1176 | ||
1177 | /* Revert to reading a previous source file. Generate a N_EINCL stab. */ | |
1178 | ||
c140b944 | 1179 | static void |
8ec3a57b | 1180 | dbxout_end_source_file (unsigned int line ATTRIBUTE_UNUSED) |
54ae7e56 | 1181 | { |
1182 | #ifdef DBX_USE_BINCL | |
51cec339 | 1183 | /* Emit EINCL stab only if BINCL is not pending. */ |
1184 | if (current_file->bincl_status == BINCL_PROCESSED) | |
d0de818d | 1185 | { |
1186 | dbxout_begin_stabn (N_EINCL); | |
1187 | dbxout_stab_value_zero (); | |
1188 | } | |
51cec339 | 1189 | current_file->bincl_status = BINCL_NOT_REQUIRED; |
573aba85 | 1190 | current_file = current_file->next; |
54ae7e56 | 1191 | #endif |
1192 | } | |
1193 | ||
cf8e41a4 | 1194 | /* Handle a few odd cases that occur when trying to make PCH files work. */ |
1195 | ||
1196 | static void | |
1197 | dbxout_handle_pch (unsigned at_end) | |
1198 | { | |
1199 | if (! at_end) | |
1200 | { | |
1201 | /* When using the PCH, this file will be included, so we need to output | |
1202 | a BINCL. */ | |
1203 | dbxout_start_source_file (0, lastfile); | |
1204 | ||
1205 | /* The base file when using the PCH won't be the same as | |
1206 | the base file when it's being generated. */ | |
1207 | lastfile = NULL; | |
1208 | } | |
1209 | else | |
1210 | { | |
6473f3f4 | 1211 | /* ... and an EINCL. */ |
cf8e41a4 | 1212 | dbxout_end_source_file (0); |
1213 | ||
1214 | /* Deal with cases where 'lastfile' was never actually changed. */ | |
1215 | lastfile_is_base = lastfile == NULL; | |
1216 | } | |
1217 | } | |
1218 | ||
0c87a39e | 1219 | #if defined (DBX_DEBUGGING_INFO) |
4ceb34b9 | 1220 | |
1221 | static void dbxout_block (tree, int, tree); | |
1222 | ||
946754ae | 1223 | /* Output debugging info to FILE to switch to sourcefile FILENAME. */ |
1224 | ||
b29760a8 | 1225 | static void |
d0de818d | 1226 | dbxout_source_file (const char *filename) |
946754ae | 1227 | { |
cf8e41a4 | 1228 | if (lastfile == 0 && lastfile_is_base) |
1229 | { | |
1230 | lastfile = base_input_file; | |
1231 | lastfile_is_base = 0; | |
1232 | } | |
1233 | ||
946754ae | 1234 | if (filename && (lastfile == 0 || strcmp (filename, lastfile))) |
1235 | { | |
d0de818d | 1236 | /* Don't change section amid function. */ |
1237 | if (current_function_decl == NULL_TREE) | |
2f14b1f9 | 1238 | switch_to_section (text_section); |
d0de818d | 1239 | |
5f1f2de5 | 1240 | dbxout_begin_simple_stabs (remap_debug_filename (filename), N_SOL); |
d0de818d | 1241 | dbxout_stab_value_internal_label ("Ltext", &source_label_number); |
946754ae | 1242 | lastfile = filename; |
1243 | } | |
1244 | } | |
1245 | ||
48e1416a | 1246 | /* Output N_BNSYM, line number symbol entry, and local symbol at |
a6e8892a | 1247 | function scope */ |
4ec92916 | 1248 | |
1249 | static void | |
1250 | dbxout_begin_prologue (unsigned int lineno, const char *filename) | |
1251 | { | |
a3407969 | 1252 | if (use_gnu_debug_info_extensions |
1253 | && !NO_DBX_FUNCTION_END | |
7d6171f2 | 1254 | && !NO_DBX_BNSYM_ENSYM |
a3407969 | 1255 | && !flag_debug_only_used_symbols) |
d0de818d | 1256 | dbxout_stabd (N_BNSYM, 0); |
4ec92916 | 1257 | |
ff1a5b4a | 1258 | /* pre-increment the scope counter */ |
1259 | scope_labelno++; | |
1260 | ||
1488fe24 | 1261 | dbxout_source_line (lineno, filename, 0, true); |
48e1416a | 1262 | /* Output function begin block at function scope, referenced |
a6e8892a | 1263 | by dbxout_block, dbxout_source_line and dbxout_function_end. */ |
1264 | emit_pending_bincls_if_required (); | |
1265 | targetm.asm_out.internal_label (asm_out_file, "LFBB", scope_labelno); | |
4ec92916 | 1266 | } |
1267 | ||
f76df888 | 1268 | /* Output a line number symbol entry for source file FILENAME and line |
1269 | number LINENO. */ | |
5e3b69f4 | 1270 | |
b9b7f8b4 | 1271 | static void |
d01c707b | 1272 | dbxout_source_line (unsigned int lineno, const char *filename, |
1488fe24 | 1273 | int discriminator ATTRIBUTE_UNUSED, |
1274 | bool is_stmt ATTRIBUTE_UNUSED) | |
5e3b69f4 | 1275 | { |
d0de818d | 1276 | dbxout_source_file (filename); |
5e3b69f4 | 1277 | |
e3b8b697 | 1278 | #ifdef DBX_OUTPUT_SOURCE_LINE |
e3b8b697 | 1279 | DBX_OUTPUT_SOURCE_LINE (asm_out_file, lineno, dbxout_source_line_counter); |
5e3b69f4 | 1280 | #else |
e3b8b697 | 1281 | if (DBX_LINES_FUNCTION_RELATIVE) |
1282 | { | |
a6e8892a | 1283 | char begin_label[20]; |
d0de818d | 1284 | dbxout_begin_stabn_sline (lineno); |
a6e8892a | 1285 | /* Reference current function start using LFBB. */ |
48e1416a | 1286 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); |
d0de818d | 1287 | dbxout_stab_value_internal_label_diff ("LM", &dbxout_source_line_counter, |
a6e8892a | 1288 | begin_label); |
e3b8b697 | 1289 | } |
1290 | else | |
d0de818d | 1291 | dbxout_stabd (N_SLINE, lineno); |
5e3b69f4 | 1292 | #endif |
1293 | } | |
1294 | ||
1dff614c | 1295 | /* Describe the beginning of an internal block within a function. */ |
1296 | ||
1297 | static void | |
8ec3a57b | 1298 | dbxout_begin_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n) |
1dff614c | 1299 | { |
51cec339 | 1300 | emit_pending_bincls_if_required (); |
e3b8b697 | 1301 | targetm.asm_out.internal_label (asm_out_file, "LBB", n); |
1dff614c | 1302 | } |
1303 | ||
1304 | /* Describe the end line-number of an internal block within a function. */ | |
1305 | ||
1306 | static void | |
8ec3a57b | 1307 | dbxout_end_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n) |
1dff614c | 1308 | { |
51cec339 | 1309 | emit_pending_bincls_if_required (); |
e3b8b697 | 1310 | targetm.asm_out.internal_label (asm_out_file, "LBE", n); |
1dff614c | 1311 | } |
1312 | ||
c37d72e9 | 1313 | /* Output dbx data for a function definition. |
1314 | This includes a definition of the function name itself (a symbol), | |
1315 | definitions of the parameters (locating them in the parameter list) | |
1316 | and then output the block that makes up the function's body | |
1317 | (including all the auto variables of the function). */ | |
1318 | ||
1319 | static void | |
8ec3a57b | 1320 | dbxout_function_decl (tree decl) |
c37d72e9 | 1321 | { |
51cec339 | 1322 | emit_pending_bincls_if_required (); |
c37d72e9 | 1323 | #ifndef DBX_FUNCTION_FIRST |
1324 | dbxout_begin_function (decl); | |
1325 | #endif | |
1326 | dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); | |
475c9f56 | 1327 | dbxout_function_end (decl); |
c37d72e9 | 1328 | } |
1329 | ||
1dff614c | 1330 | #endif /* DBX_DEBUGGING_INFO */ |
1331 | ||
3a1c9df2 | 1332 | static void |
1333 | dbxout_early_global_decl (tree decl ATTRIBUTE_UNUSED) | |
1334 | { | |
1335 | /* NYI for non-dwarf. */ | |
1336 | } | |
1337 | ||
397c7bc7 | 1338 | /* Debug information for a global DECL. Called from toplev.c after |
1339 | compilation proper has finished. */ | |
1340 | static void | |
3a1c9df2 | 1341 | dbxout_late_global_decl (tree decl) |
397c7bc7 | 1342 | { |
50a7abc5 | 1343 | if (TREE_CODE (decl) == VAR_DECL && !DECL_EXTERNAL (decl)) |
262444a6 | 1344 | { |
1345 | int saved_tree_used = TREE_USED (decl); | |
1346 | TREE_USED (decl) = 1; | |
1347 | dbxout_symbol (decl, 0); | |
1348 | TREE_USED (decl) = saved_tree_used; | |
1349 | } | |
1eefe280 | 1350 | } |
397c7bc7 | 1351 | |
73ae3ef7 | 1352 | /* This is just a function-type adapter; dbxout_symbol does exactly |
1353 | what we want but returns an int. */ | |
1354 | static void | |
1355 | dbxout_type_decl (tree decl, int local) | |
1356 | { | |
1357 | dbxout_symbol (decl, local); | |
1358 | } | |
1359 | ||
946754ae | 1360 | /* At the end of compilation, finish writing the symbol table. |
e3b8b697 | 1361 | The default is to call debug_free_queue but do nothing else. */ |
946754ae | 1362 | |
b896d81b | 1363 | static void |
8ec3a57b | 1364 | dbxout_finish (const char *filename ATTRIBUTE_UNUSED) |
946754ae | 1365 | { |
1366 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END | |
e3b8b697 | 1367 | DBX_OUTPUT_MAIN_SOURCE_FILE_END (asm_out_file, filename); |
1368 | #elif defined DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END | |
1369 | { | |
2f14b1f9 | 1370 | switch_to_section (text_section); |
d0de818d | 1371 | dbxout_begin_empty_stabs (N_SO); |
1372 | dbxout_stab_value_internal_label ("Letext", 0); | |
e3b8b697 | 1373 | } |
1374 | #endif | |
262444a6 | 1375 | debug_free_queue (); |
946754ae | 1376 | } |
1377 | ||
54ae7e56 | 1378 | /* Output the index of a type. */ |
1379 | ||
1380 | static void | |
8ec3a57b | 1381 | dbxout_type_index (tree type) |
54ae7e56 | 1382 | { |
1383 | #ifndef DBX_USE_BINCL | |
d0de818d | 1384 | stabstr_D (TYPE_SYMTAB_ADDRESS (type)); |
54ae7e56 | 1385 | #else |
1386 | struct typeinfo *t = &typevec[TYPE_SYMTAB_ADDRESS (type)]; | |
d0de818d | 1387 | stabstr_C ('('); |
1388 | stabstr_D (t->file_number); | |
1389 | stabstr_C (','); | |
1390 | stabstr_D (t->type_number); | |
1391 | stabstr_C (')'); | |
54ae7e56 | 1392 | #endif |
1393 | } | |
1394 | ||
946754ae | 1395 | \f |
00e3fe44 | 1396 | /* Generate the symbols for any queued up type symbols we encountered |
1397 | while generating the type info for some originally used symbol. | |
1398 | This might generate additional entries in the queue. Only when | |
1399 | the nesting depth goes to 0 is this routine called. */ | |
1400 | ||
1401 | static void | |
1402 | debug_flush_symbol_queue (void) | |
1403 | { | |
1404 | int i; | |
1405 | ||
1406 | /* Make sure that additionally queued items are not flushed | |
1407 | prematurely. */ | |
1408 | ||
1409 | ++debug_nesting; | |
1410 | ||
1411 | for (i = 0; i < symbol_queue_index; ++i) | |
1412 | { | |
1413 | /* If we pushed queued symbols then such symbols must be | |
1414 | output no matter what anyone else says. Specifically, | |
1415 | we need to make sure dbxout_symbol() thinks the symbol was | |
1416 | used and also we need to override TYPE_DECL_SUPPRESS_DEBUG | |
1417 | which may be set for outside reasons. */ | |
1418 | int saved_tree_used = TREE_USED (symbol_queue[i]); | |
1419 | int saved_suppress_debug = TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]); | |
1420 | TREE_USED (symbol_queue[i]) = 1; | |
1421 | TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = 0; | |
1422 | ||
1423 | #ifdef DBX_DEBUGGING_INFO | |
1424 | dbxout_symbol (symbol_queue[i], 0); | |
1425 | #endif | |
1426 | ||
1427 | TREE_USED (symbol_queue[i]) = saved_tree_used; | |
1428 | TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = saved_suppress_debug; | |
1429 | } | |
1430 | ||
1431 | symbol_queue_index = 0; | |
1432 | --debug_nesting; | |
1433 | } | |
1434 | ||
1435 | /* Queue a type symbol needed as part of the definition of a decl | |
1436 | symbol. These symbols are generated when debug_flush_symbol_queue() | |
1437 | is called. */ | |
d0de818d | 1438 | |
00e3fe44 | 1439 | static void |
1440 | debug_queue_symbol (tree decl) | |
1441 | { | |
1442 | if (symbol_queue_index >= symbol_queue_size) | |
1443 | { | |
1444 | symbol_queue_size += 10; | |
1445 | symbol_queue = XRESIZEVEC (tree, symbol_queue, symbol_queue_size); | |
1446 | } | |
1447 | ||
1448 | symbol_queue[symbol_queue_index++] = decl; | |
1449 | } | |
1450 | ||
1451 | /* Free symbol queue. */ | |
1452 | static void | |
1453 | debug_free_queue (void) | |
1454 | { | |
1455 | if (symbol_queue) | |
1456 | { | |
1457 | free (symbol_queue); | |
1458 | symbol_queue = NULL; | |
1459 | symbol_queue_size = 0; | |
1460 | } | |
1461 | } | |
1462 | \f | |
d0de818d | 1463 | /* Used in several places: evaluates to '0' for a private decl, |
1464 | '1' for a protected decl, '2' for a public decl. */ | |
1465 | #define DECL_ACCESSIBILITY_CHAR(DECL) \ | |
7ac958de | 1466 | (TREE_PRIVATE (DECL) ? '0' : TREE_PROTECTED (DECL) ? '1' : '2') |
d0de818d | 1467 | |
4bbea254 | 1468 | /* Subroutine of `dbxout_type'. Output the type fields of TYPE. |
946754ae | 1469 | This must be a separate function because anonymous unions require |
1470 | recursive calls. */ | |
1471 | ||
1472 | static void | |
8ec3a57b | 1473 | dbxout_type_fields (tree type) |
946754ae | 1474 | { |
1475 | tree tem; | |
5d844ba2 | 1476 | |
b264b33c | 1477 | /* Output the name, type, position (in bits), size (in bits) of each |
5d844ba2 | 1478 | field that we can support. */ |
1767a056 | 1479 | for (tem = TYPE_FIELDS (type); tem; tem = DECL_CHAIN (tem)) |
946754ae | 1480 | { |
af6ed417 | 1481 | /* If one of the nodes is an error_mark or its type is then |
1482 | return early. */ | |
da579dbb | 1483 | if (error_operand_p (tem)) |
11d99e06 | 1484 | return; |
1485 | ||
946754ae | 1486 | /* Omit here local type decls until we know how to support them. */ |
5d844ba2 | 1487 | if (TREE_CODE (tem) == TYPE_DECL |
26355ad6 | 1488 | /* Omit here the nameless fields that are used to skip bits. */ |
1489 | || DECL_IGNORED_P (tem) | |
5d844ba2 | 1490 | /* Omit fields whose position or size are variable or too large to |
1491 | represent. */ | |
1492 | || (TREE_CODE (tem) == FIELD_DECL | |
e913b5cd | 1493 | && (! tree_fits_shwi_p (bit_position (tem)) |
6460676e | 1494 | || ! DECL_SIZE (tem) |
e913b5cd | 1495 | || ! tree_fits_uhwi_p (DECL_SIZE (tem))))) |
61be0a71 | 1496 | continue; |
5d844ba2 | 1497 | |
c40b51de | 1498 | else if (TREE_CODE (tem) != CONST_DECL) |
946754ae | 1499 | { |
1500 | /* Continue the line if necessary, | |
1501 | but not before the first field. */ | |
1502 | if (tem != TYPE_FIELDS (type)) | |
5d844ba2 | 1503 | CONTIN; |
946754ae | 1504 | |
c40b51de | 1505 | if (DECL_NAME (tem)) |
d0de818d | 1506 | stabstr_I (DECL_NAME (tem)); |
1507 | stabstr_C (':'); | |
946754ae | 1508 | |
9cdc08c6 | 1509 | if (use_gnu_debug_info_extensions |
946754ae | 1510 | && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem) |
1511 | || TREE_CODE (tem) != FIELD_DECL)) | |
1512 | { | |
d0de818d | 1513 | stabstr_C ('/'); |
1514 | stabstr_C (DECL_ACCESSIBILITY_CHAR (tem)); | |
946754ae | 1515 | } |
1516 | ||
1517 | dbxout_type ((TREE_CODE (tem) == FIELD_DECL | |
1518 | && DECL_BIT_FIELD_TYPE (tem)) | |
9aa97f08 | 1519 | ? DECL_BIT_FIELD_TYPE (tem) : TREE_TYPE (tem), 0); |
946754ae | 1520 | |
1521 | if (TREE_CODE (tem) == VAR_DECL) | |
1522 | { | |
9cdc08c6 | 1523 | if (TREE_STATIC (tem) && use_gnu_debug_info_extensions) |
946754ae | 1524 | { |
d4b87fe5 | 1525 | tree name = DECL_ASSEMBLER_NAME (tem); |
1526 | ||
d0de818d | 1527 | stabstr_C (':'); |
1528 | stabstr_I (name); | |
1529 | stabstr_C (';'); | |
946754ae | 1530 | } |
1531 | else | |
d0de818d | 1532 | /* If TEM is non-static, GDB won't understand it. */ |
1533 | stabstr_S (",0,0;"); | |
946754ae | 1534 | } |
5d844ba2 | 1535 | else |
946754ae | 1536 | { |
d0de818d | 1537 | stabstr_C (','); |
1538 | stabstr_D (int_bit_position (tem)); | |
1539 | stabstr_C (','); | |
e913b5cd | 1540 | stabstr_D (tree_to_uhwi (DECL_SIZE (tem))); |
d0de818d | 1541 | stabstr_C (';'); |
946754ae | 1542 | } |
946754ae | 1543 | } |
1544 | } | |
1545 | } | |
1546 | \f | |
4bbea254 | 1547 | /* Subroutine of `dbxout_type_methods'. Output debug info about the |
d0de818d | 1548 | method described DECL. */ |
946754ae | 1549 | |
1550 | static void | |
d0de818d | 1551 | dbxout_type_method_1 (tree decl) |
946754ae | 1552 | { |
946754ae | 1553 | char c1 = 'A', c2; |
1554 | ||
1555 | if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE) | |
1556 | c2 = '?'; | |
1557 | else /* it's a METHOD_TYPE. */ | |
1558 | { | |
96704d5f | 1559 | tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))); |
946754ae | 1560 | /* A for normal functions. |
1561 | B for `const' member functions. | |
1562 | C for `volatile' member functions. | |
1563 | D for `const volatile' member functions. */ | |
1564 | if (TYPE_READONLY (TREE_TYPE (firstarg))) | |
1565 | c1 += 1; | |
1566 | if (TYPE_VOLATILE (TREE_TYPE (firstarg))) | |
1567 | c1 += 2; | |
1568 | ||
1569 | if (DECL_VINDEX (decl)) | |
1570 | c2 = '*'; | |
1571 | else | |
1572 | c2 = '.'; | |
1573 | } | |
1574 | ||
d0de818d | 1575 | /* ??? Output the mangled name, which contains an encoding of the |
1576 | method's type signature. May not be necessary anymore. */ | |
1577 | stabstr_C (':'); | |
1578 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
1579 | stabstr_C (';'); | |
1580 | stabstr_C (DECL_ACCESSIBILITY_CHAR (decl)); | |
1581 | stabstr_C (c1); | |
1582 | stabstr_C (c2); | |
5d844ba2 | 1583 | |
e913b5cd | 1584 | if (DECL_VINDEX (decl) && tree_fits_shwi_p (DECL_VINDEX (decl))) |
946754ae | 1585 | { |
e913b5cd | 1586 | stabstr_D (tree_to_shwi (DECL_VINDEX (decl))); |
d0de818d | 1587 | stabstr_C (';'); |
9aa97f08 | 1588 | dbxout_type (DECL_CONTEXT (decl), 0); |
d0de818d | 1589 | stabstr_C (';'); |
946754ae | 1590 | } |
1591 | } | |
1592 | \f | |
1593 | /* Subroutine of `dbxout_type'. Output debug info about the methods defined | |
1594 | in TYPE. */ | |
1595 | ||
1596 | static void | |
8ec3a57b | 1597 | dbxout_type_methods (tree type) |
946754ae | 1598 | { |
1599 | /* C++: put out the method names and their parameter lists */ | |
946754ae | 1600 | tree methods = TYPE_METHODS (type); |
19cb6b50 | 1601 | tree fndecl; |
1602 | tree last; | |
946754ae | 1603 | |
1604 | if (methods == NULL_TREE) | |
1605 | return; | |
1606 | ||
871b7da1 | 1607 | if (TREE_CODE (methods) != TREE_VEC) |
b23cec01 | 1608 | fndecl = methods; |
1609 | else if (TREE_VEC_ELT (methods, 0) != NULL_TREE) | |
946754ae | 1610 | fndecl = TREE_VEC_ELT (methods, 0); |
9cdc08c6 | 1611 | else |
1612 | fndecl = TREE_VEC_ELT (methods, 1); | |
946754ae | 1613 | |
946754ae | 1614 | while (fndecl) |
1615 | { | |
b769415e | 1616 | int need_prefix = 1; |
1617 | ||
d0bcb1eb | 1618 | /* Group together all the methods for the same operation. |
1619 | These differ in the types of the arguments. */ | |
946754ae | 1620 | for (last = NULL_TREE; |
1621 | fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last)); | |
1767a056 | 1622 | fndecl = DECL_CHAIN (fndecl)) |
946754ae | 1623 | /* Output the name of the field (after overloading), as |
1624 | well as the name of the field before overloading, along | |
1625 | with its parameter list */ | |
1626 | { | |
7e64c604 | 1627 | /* Skip methods that aren't FUNCTION_DECLs. (In C++, these |
1628 | include TEMPLATE_DECLs.) The debugger doesn't know what | |
1629 | to do with such entities anyhow. */ | |
1630 | if (TREE_CODE (fndecl) != FUNCTION_DECL) | |
1631 | continue; | |
1632 | ||
946754ae | 1633 | CONTIN; |
1634 | ||
1635 | last = fndecl; | |
d0bcb1eb | 1636 | |
8f80e66d | 1637 | /* Also ignore abstract methods; those are only interesting to |
1638 | the DWARF backends. */ | |
16d41ae2 | 1639 | if (DECL_IGNORED_P (fndecl) || DECL_ABSTRACT_P (fndecl)) |
d0bcb1eb | 1640 | continue; |
1641 | ||
b769415e | 1642 | /* Redundantly output the plain name, since that's what gdb |
1643 | expects. */ | |
1644 | if (need_prefix) | |
1645 | { | |
d0de818d | 1646 | stabstr_I (DECL_NAME (fndecl)); |
1647 | stabstr_S ("::"); | |
b769415e | 1648 | need_prefix = 0; |
1649 | } | |
1650 | ||
9aa97f08 | 1651 | dbxout_type (TREE_TYPE (fndecl), 0); |
d0de818d | 1652 | dbxout_type_method_1 (fndecl); |
946754ae | 1653 | } |
b769415e | 1654 | if (!need_prefix) |
d0de818d | 1655 | stabstr_C (';'); |
946754ae | 1656 | } |
1657 | } | |
bf503a12 | 1658 | |
1659 | /* Emit a "range" type specification, which has the form: | |
1660 | "r<index type>;<lower bound>;<upper bound>;". | |
a9538d68 | 1661 | TYPE is an INTEGER_TYPE, LOW and HIGH are the bounds. */ |
bf503a12 | 1662 | |
1663 | static void | |
a9538d68 | 1664 | dbxout_range_type (tree type, tree low, tree high) |
bf503a12 | 1665 | { |
d0de818d | 1666 | stabstr_C ('r'); |
a774577b | 1667 | if (TREE_TYPE (type)) |
9aa97f08 | 1668 | dbxout_type (TREE_TYPE (type), 0); |
0c688ce9 | 1669 | else if (TREE_CODE (type) != INTEGER_TYPE) |
9aa97f08 | 1670 | dbxout_type (type, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */ |
bf503a12 | 1671 | else |
1672 | { | |
255a4f1f | 1673 | /* Traditionally, we made sure 'int' was type 1, and builtin types |
1674 | were defined to be sub-ranges of int. Unfortunately, this | |
1675 | does not allow us to distinguish true sub-ranges from integer | |
1676 | types. So, instead we define integer (non-sub-range) types as | |
829f57e9 | 1677 | sub-ranges of themselves. This matters for Chill. If this isn't |
1678 | a subrange type, then we want to define it in terms of itself. | |
1679 | However, in C, this may be an anonymous integer type, and we don't | |
1680 | want to emit debug info referring to it. Just calling | |
1681 | dbxout_type_index won't work anyways, because the type hasn't been | |
1682 | defined yet. We make this work for both cases by checked to see | |
1683 | whether this is a defined type, referring to it if it is, and using | |
1684 | 'int' otherwise. */ | |
1685 | if (TYPE_SYMTAB_ADDRESS (type) != 0) | |
1686 | dbxout_type_index (type); | |
1687 | else | |
1688 | dbxout_type_index (integer_type_node); | |
bf503a12 | 1689 | } |
5d844ba2 | 1690 | |
d0de818d | 1691 | stabstr_C (';'); |
e913b5cd | 1692 | if (low && tree_fits_shwi_p (low)) |
9bf3e679 | 1693 | { |
a9538d68 | 1694 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
1695 | stabstr_O (low); | |
0989224f | 1696 | else |
e913b5cd | 1697 | stabstr_D (tree_to_shwi (low)); |
9bf3e679 | 1698 | } |
bf503a12 | 1699 | else |
d0de818d | 1700 | stabstr_C ('0'); |
5d844ba2 | 1701 | |
d0de818d | 1702 | stabstr_C (';'); |
e913b5cd | 1703 | if (high && tree_fits_shwi_p (high)) |
9bf3e679 | 1704 | { |
a9538d68 | 1705 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
1706 | stabstr_O (high); | |
0989224f | 1707 | else |
e913b5cd | 1708 | stabstr_D (tree_to_shwi (high)); |
d0de818d | 1709 | stabstr_C (';'); |
9bf3e679 | 1710 | } |
bf503a12 | 1711 | else |
d0de818d | 1712 | stabstr_S ("-1;"); |
bf503a12 | 1713 | } |
946754ae | 1714 | \f |
262444a6 | 1715 | |
946754ae | 1716 | /* Output a reference to a type. If the type has not yet been |
1717 | described in the dbx output, output its definition now. | |
1718 | For a type already defined, just refer to its definition | |
1719 | using the type number. | |
1720 | ||
1721 | If FULL is nonzero, and the type has been described only with | |
1722 | a forward-reference, output the definition now. | |
1723 | If FULL is zero in this case, just refer to the forward-reference | |
9aa97f08 | 1724 | using the number previously allocated. */ |
946754ae | 1725 | |
1726 | static void | |
8ec3a57b | 1727 | dbxout_type (tree type, int full) |
946754ae | 1728 | { |
c61d074f | 1729 | static int anonymous_type_number = 0; |
a9538d68 | 1730 | tree tem, main_variant, low, high; |
946754ae | 1731 | |
a9538d68 | 1732 | if (TREE_CODE (type) == INTEGER_TYPE) |
1733 | { | |
1734 | if (TREE_TYPE (type) == 0) | |
1735 | { | |
1736 | low = TYPE_MIN_VALUE (type); | |
1737 | high = TYPE_MAX_VALUE (type); | |
1738 | } | |
1739 | ||
1740 | else if (subrange_type_for_debug_p (type, &low, &high)) | |
1741 | ; | |
1742 | ||
1743 | /* If this is a subtype that should not be emitted as a subrange type, | |
1744 | use the base type. */ | |
1745 | else | |
1746 | { | |
1747 | type = TREE_TYPE (type); | |
1748 | low = TYPE_MIN_VALUE (type); | |
1749 | high = TYPE_MAX_VALUE (type); | |
1750 | } | |
1751 | } | |
1752 | ||
946754ae | 1753 | /* If there was an input error and we don't really have a type, |
1754 | avoid crashing and write something that is at least valid | |
1755 | by assuming `int'. */ | |
1756 | if (type == error_mark_node) | |
1757 | type = integer_type_node; | |
c48f961d | 1758 | else |
946754ae | 1759 | { |
946754ae | 1760 | if (TYPE_NAME (type) |
1761 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
ac3e80e4 | 1762 | && TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type))) |
946754ae | 1763 | full = 0; |
1764 | } | |
1765 | ||
1d971bfd | 1766 | /* Try to find the "main variant" with the same name. */ |
1767 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1768 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
1769 | main_variant = TREE_TYPE (TYPE_NAME (type)); | |
1770 | else | |
1771 | main_variant = TYPE_MAIN_VARIANT (type); | |
1772 | ||
1773 | /* If we are not using extensions, stabs does not distinguish const and | |
1774 | volatile, so there is no need to make them separate types. */ | |
1775 | if (!use_gnu_debug_info_extensions) | |
1776 | type = main_variant; | |
1777 | ||
946754ae | 1778 | if (TYPE_SYMTAB_ADDRESS (type) == 0) |
1779 | { | |
1780 | /* Type has no dbx number assigned. Assign next available number. */ | |
1781 | TYPE_SYMTAB_ADDRESS (type) = next_type_number++; | |
1782 | ||
1783 | /* Make sure type vector is long enough to record about this type. */ | |
1784 | ||
1785 | if (next_type_number == typevec_len) | |
1786 | { | |
364c0c59 | 1787 | typevec = GGC_RESIZEVEC (struct typeinfo, typevec, typevec_len * 2); |
f0af5a88 | 1788 | memset (typevec + typevec_len, 0, typevec_len * sizeof typevec[0]); |
946754ae | 1789 | typevec_len *= 2; |
1790 | } | |
54ae7e56 | 1791 | |
1792 | #ifdef DBX_USE_BINCL | |
51cec339 | 1793 | emit_pending_bincls_if_required (); |
37808e3a | 1794 | typevec[TYPE_SYMTAB_ADDRESS (type)].file_number |
1795 | = current_file->file_number; | |
1796 | typevec[TYPE_SYMTAB_ADDRESS (type)].type_number | |
1797 | = current_file->next_type_number++; | |
54ae7e56 | 1798 | #endif |
946754ae | 1799 | } |
1800 | ||
262444a6 | 1801 | if (flag_debug_only_used_symbols) |
1802 | { | |
1803 | if ((TREE_CODE (type) == RECORD_TYPE | |
1804 | || TREE_CODE (type) == UNION_TYPE | |
1805 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
1806 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
1807 | && TYPE_STUB_DECL (type) | |
ce45a448 | 1808 | && DECL_P (TYPE_STUB_DECL (type)) |
262444a6 | 1809 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (type))) |
1810 | debug_queue_symbol (TYPE_STUB_DECL (type)); | |
1811 | else if (TYPE_NAME (type) | |
1812 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
1813 | debug_queue_symbol (TYPE_NAME (type)); | |
1814 | } | |
8ec3a57b | 1815 | |
946754ae | 1816 | /* Output the number of this type, to refer to it. */ |
54ae7e56 | 1817 | dbxout_type_index (type); |
946754ae | 1818 | |
439c05a0 | 1819 | #ifdef DBX_TYPE_DEFINED |
1820 | if (DBX_TYPE_DEFINED (type)) | |
1821 | return; | |
1822 | #endif | |
1823 | ||
946754ae | 1824 | /* If this type's definition has been output or is now being output, |
1825 | that is all. */ | |
1826 | ||
54ae7e56 | 1827 | switch (typevec[TYPE_SYMTAB_ADDRESS (type)].status) |
946754ae | 1828 | { |
1829 | case TYPE_UNSEEN: | |
1830 | break; | |
1831 | case TYPE_XREF: | |
f10caba4 | 1832 | /* If we have already had a cross reference, |
1833 | and either that's all we want or that's the best we could do, | |
1834 | don't repeat the cross reference. | |
1835 | Sun dbx crashes if we do. */ | |
4b72716d | 1836 | if (! full || !COMPLETE_TYPE_P (type) |
f10caba4 | 1837 | /* No way in DBX fmt to describe a variable size. */ |
e913b5cd | 1838 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
946754ae | 1839 | return; |
1840 | break; | |
1841 | case TYPE_DEFINED: | |
1842 | return; | |
1843 | } | |
1844 | ||
1845 | #ifdef DBX_NO_XREFS | |
1846 | /* For systems where dbx output does not allow the `=xsNAME:' syntax, | |
1847 | leave the type-number completely undefined rather than output | |
7cac4c57 | 1848 | a cross-reference. If we have already used GNU debug info extensions, |
1849 | then it is OK to output a cross reference. This is necessary to get | |
1850 | proper C++ debug output. */ | |
1851 | if ((TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE | |
1852 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
1853 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
1854 | && ! use_gnu_debug_info_extensions) | |
5c579180 | 1855 | /* We must use the same test here as we use twice below when deciding |
1856 | whether to emit a cross-reference. */ | |
1857 | if ((TYPE_NAME (type) != 0 | |
1858 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1859 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
1860 | && !full) | |
4b72716d | 1861 | || !COMPLETE_TYPE_P (type) |
5c579180 | 1862 | /* No way in DBX fmt to describe a variable size. */ |
e913b5cd | 1863 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
946754ae | 1864 | { |
54ae7e56 | 1865 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
946754ae | 1866 | return; |
1867 | } | |
1868 | #endif | |
1869 | ||
1870 | /* Output a definition now. */ | |
d0de818d | 1871 | stabstr_C ('='); |
946754ae | 1872 | |
1873 | /* Mark it as defined, so that if it is self-referent | |
1874 | we will not get into an infinite recursion of definitions. */ | |
1875 | ||
54ae7e56 | 1876 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED; |
946754ae | 1877 | |
1d971bfd | 1878 | /* If this type is a variant of some other, hand off. Types with |
1879 | different names are usefully distinguished. We only distinguish | |
1880 | cv-qualified types if we're using extensions. */ | |
1881 | if (TYPE_READONLY (type) > TYPE_READONLY (main_variant)) | |
1882 | { | |
d0de818d | 1883 | stabstr_C ('k'); |
1d971bfd | 1884 | dbxout_type (build_type_variant (type, 0, TYPE_VOLATILE (type)), 0); |
1885 | return; | |
1886 | } | |
1887 | else if (TYPE_VOLATILE (type) > TYPE_VOLATILE (main_variant)) | |
1888 | { | |
d0de818d | 1889 | stabstr_C ('B'); |
1d971bfd | 1890 | dbxout_type (build_type_variant (type, TYPE_READONLY (type), 0), 0); |
1891 | return; | |
1892 | } | |
1893 | else if (main_variant != TYPE_MAIN_VARIANT (type)) | |
1894 | { | |
262444a6 | 1895 | if (flag_debug_only_used_symbols) |
1896 | { | |
1897 | tree orig_type = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
1898 | ||
8ec3a57b | 1899 | if ((TREE_CODE (orig_type) == RECORD_TYPE |
262444a6 | 1900 | || TREE_CODE (orig_type) == UNION_TYPE |
1901 | || TREE_CODE (orig_type) == QUAL_UNION_TYPE | |
1902 | || TREE_CODE (orig_type) == ENUMERAL_TYPE) | |
1903 | && TYPE_STUB_DECL (orig_type) | |
1904 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (orig_type))) | |
1905 | debug_queue_symbol (TYPE_STUB_DECL (orig_type)); | |
1906 | } | |
1d971bfd | 1907 | /* 'type' is a typedef; output the type it refers to. */ |
9aa97f08 | 1908 | dbxout_type (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), 0); |
4a4d93c2 | 1909 | return; |
1910 | } | |
1d971bfd | 1911 | /* else continue. */ |
4a4d93c2 | 1912 | |
946754ae | 1913 | switch (TREE_CODE (type)) |
1914 | { | |
1915 | case VOID_TYPE: | |
fa67d8e8 | 1916 | case NULLPTR_TYPE: |
946754ae | 1917 | case LANG_TYPE: |
0c6d8c36 | 1918 | /* For a void type, just define it as itself; i.e., "5=5". |
946754ae | 1919 | This makes us consider it defined |
1920 | without saying what it is. The debugger will make it | |
1921 | a void type when the reference is seen, and nothing will | |
1922 | ever override that default. */ | |
54ae7e56 | 1923 | dbxout_type_index (type); |
946754ae | 1924 | break; |
1925 | ||
1926 | case INTEGER_TYPE: | |
78a8ed03 | 1927 | if (type == char_type_node && ! TYPE_UNSIGNED (type)) |
54ae7e56 | 1928 | { |
1929 | /* Output the type `char' as a subrange of itself! | |
1930 | I don't understand this definition, just copied it | |
1931 | from the output of pcc. | |
1932 | This used to use `r2' explicitly and we used to | |
1933 | take care to make sure that `char' was type number 2. */ | |
d0de818d | 1934 | stabstr_C ('r'); |
54ae7e56 | 1935 | dbxout_type_index (type); |
d0de818d | 1936 | stabstr_S (";0;127;"); |
54ae7e56 | 1937 | } |
155b05dc | 1938 | |
1939 | /* If this is a subtype of another integer type, always prefer to | |
1940 | write it as a subtype. */ | |
1941 | else if (TREE_TYPE (type) != 0 | |
79433a4c | 1942 | && TREE_CODE (TREE_TYPE (type)) == INTEGER_TYPE) |
1eefe280 | 1943 | { |
153b0682 | 1944 | /* If the size is non-standard, say what it is if we can use |
1945 | GDB extensions. */ | |
1946 | ||
1947 | if (use_gnu_debug_info_extensions | |
1948 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
1949 | { | |
d0de818d | 1950 | stabstr_S ("@s"); |
1951 | stabstr_D (TYPE_PRECISION (type)); | |
1952 | stabstr_C (';'); | |
153b0682 | 1953 | } |
1954 | ||
a9538d68 | 1955 | dbxout_range_type (type, low, high); |
1eefe280 | 1956 | } |
155b05dc | 1957 | |
1958 | else | |
1eefe280 | 1959 | { |
155b05dc | 1960 | /* If the size is non-standard, say what it is if we can use |
1961 | GDB extensions. */ | |
1962 | ||
1963 | if (use_gnu_debug_info_extensions | |
1964 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
d4b87fe5 | 1965 | { |
d0de818d | 1966 | stabstr_S ("@s"); |
1967 | stabstr_D (TYPE_PRECISION (type)); | |
1968 | stabstr_C (';'); | |
d4b87fe5 | 1969 | } |
155b05dc | 1970 | |
a9538d68 | 1971 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
155b05dc | 1972 | { |
d0de818d | 1973 | stabstr_C ('r'); |
bdeba923 | 1974 | |
1975 | /* If this type derives from another type, output type index of | |
1976 | parent type. This is particularly important when parent type | |
1977 | is an enumerated type, because not generating the parent type | |
1978 | index would transform the definition of this enumerated type | |
1979 | into a plain unsigned type. */ | |
1980 | if (TREE_TYPE (type) != 0) | |
1981 | dbxout_type_index (TREE_TYPE (type)); | |
1982 | else | |
1983 | dbxout_type_index (type); | |
1984 | ||
d0de818d | 1985 | stabstr_C (';'); |
a9538d68 | 1986 | stabstr_O (low); |
d0de818d | 1987 | stabstr_C (';'); |
a9538d68 | 1988 | stabstr_O (high); |
d0de818d | 1989 | stabstr_C (';'); |
155b05dc | 1990 | } |
1991 | ||
1992 | else | |
1993 | /* Output other integer types as subranges of `int'. */ | |
a9538d68 | 1994 | dbxout_range_type (type, low, high); |
1eefe280 | 1995 | } |
155b05dc | 1996 | |
946754ae | 1997 | break; |
1998 | ||
1999 | case REAL_TYPE: | |
06f0b99c | 2000 | case FIXED_POINT_TYPE: |
946754ae | 2001 | /* This used to say `r1' and we used to take care |
2002 | to make sure that `int' was type number 1. */ | |
d0de818d | 2003 | stabstr_C ('r'); |
54ae7e56 | 2004 | dbxout_type_index (integer_type_node); |
d0de818d | 2005 | stabstr_C (';'); |
2006 | stabstr_D (int_size_in_bytes (type)); | |
2007 | stabstr_S (";0;"); | |
946754ae | 2008 | break; |
2009 | ||
f4267b6f | 2010 | case BOOLEAN_TYPE: |
2011 | if (use_gnu_debug_info_extensions) | |
4d3a9616 | 2012 | { |
d0de818d | 2013 | stabstr_S ("@s"); |
2014 | stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type)); | |
2015 | stabstr_S (";-16;"); | |
4d3a9616 | 2016 | } |
f4267b6f | 2017 | else /* Define as enumeral type (False, True) */ |
d0de818d | 2018 | stabstr_S ("eFalse:0,True:1,;"); |
b264b33c | 2019 | break; |
2020 | ||
b264b33c | 2021 | case COMPLEX_TYPE: |
6b6cb0d6 | 2022 | /* Differs from the REAL_TYPE by its new data type number. |
2023 | R3 is NF_COMPLEX. We don't try to use any of the other NF_* | |
2024 | codes since gdb doesn't care anyway. */ | |
b264b33c | 2025 | |
2026 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) | |
2027 | { | |
d0de818d | 2028 | stabstr_S ("R3;"); |
2029 | stabstr_D (2 * int_size_in_bytes (TREE_TYPE (type))); | |
2030 | stabstr_S (";0;"); | |
c99df4b3 | 2031 | } |
2032 | else | |
2033 | { | |
2034 | /* Output a complex integer type as a structure, | |
2035 | pending some other way to do it. */ | |
d0de818d | 2036 | stabstr_C ('s'); |
2037 | stabstr_D (int_size_in_bytes (type)); | |
d4b87fe5 | 2038 | |
d0de818d | 2039 | stabstr_S ("real:"); |
9aa97f08 | 2040 | dbxout_type (TREE_TYPE (type), 0); |
d0de818d | 2041 | stabstr_S (",0,"); |
2042 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2043 | ||
2044 | stabstr_S (";imag:"); | |
9aa97f08 | 2045 | dbxout_type (TREE_TYPE (type), 0); |
d0de818d | 2046 | stabstr_C (','); |
2047 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2048 | stabstr_C (','); | |
2049 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2050 | stabstr_S (";;"); | |
c99df4b3 | 2051 | } |
b264b33c | 2052 | break; |
2053 | ||
946754ae | 2054 | case ARRAY_TYPE: |
1020180f | 2055 | /* Make arrays of packed bits look like bitstrings for chill. */ |
2056 | if (TYPE_PACKED (type) && use_gnu_debug_info_extensions) | |
2057 | { | |
d0de818d | 2058 | stabstr_S ("@s"); |
2059 | stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type)); | |
2060 | stabstr_S (";@S;S"); | |
9aa97f08 | 2061 | dbxout_type (TYPE_DOMAIN (type), 0); |
1020180f | 2062 | break; |
2063 | } | |
d4b87fe5 | 2064 | |
946754ae | 2065 | /* Output "a" followed by a range type definition |
2066 | for the index type of the array | |
2067 | followed by a reference to the target-type. | |
bf503a12 | 2068 | ar1;0;N;M for a C array of type M and size N+1. */ |
11aea978 | 2069 | /* Check if a character string type, which in Chill is |
a92771b8 | 2070 | different from an array of characters. */ |
11aea978 | 2071 | if (TYPE_STRING_FLAG (type) && use_gnu_debug_info_extensions) |
2072 | { | |
d0de818d | 2073 | stabstr_S ("@S;"); |
11aea978 | 2074 | } |
bf503a12 | 2075 | tem = TYPE_DOMAIN (type); |
2076 | if (tem == NULL) | |
54ae7e56 | 2077 | { |
d0de818d | 2078 | stabstr_S ("ar"); |
54ae7e56 | 2079 | dbxout_type_index (integer_type_node); |
d0de818d | 2080 | stabstr_S (";0;-1;"); |
54ae7e56 | 2081 | } |
bf503a12 | 2082 | else |
2083 | { | |
d0de818d | 2084 | stabstr_C ('a'); |
a9538d68 | 2085 | dbxout_range_type (tem, TYPE_MIN_VALUE (tem), TYPE_MAX_VALUE (tem)); |
bf503a12 | 2086 | } |
d4b87fe5 | 2087 | |
9aa97f08 | 2088 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2089 | break; |
2090 | ||
48cee64c | 2091 | case VECTOR_TYPE: |
2092 | /* Make vectors look like an array. */ | |
2093 | if (use_gnu_debug_info_extensions) | |
2094 | stabstr_S ("@V;"); | |
2095 | ||
2096 | /* Output "a" followed by a range type definition | |
2097 | for the index type of the array | |
2098 | followed by a reference to the target-type. | |
2099 | ar1;0;N;M for a C array of type M and size N+1. */ | |
2100 | stabstr_C ('a'); | |
2101 | dbxout_range_type (integer_type_node, size_zero_node, | |
2102 | size_int (TYPE_VECTOR_SUBPARTS (type) - 1)); | |
2103 | ||
2104 | dbxout_type (TREE_TYPE (type), 0); | |
2105 | break; | |
2106 | ||
946754ae | 2107 | case RECORD_TYPE: |
2108 | case UNION_TYPE: | |
7f8a347a | 2109 | case QUAL_UNION_TYPE: |
946754ae | 2110 | { |
f6cc6a08 | 2111 | tree binfo = TYPE_BINFO (type); |
946754ae | 2112 | |
5c579180 | 2113 | /* Output a structure type. We must use the same test here as we |
2114 | use in the DBX_NO_XREFS case above. */ | |
439c05a0 | 2115 | if ((TYPE_NAME (type) != 0 |
2116 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
2117 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
2118 | && !full) | |
4b72716d | 2119 | || !COMPLETE_TYPE_P (type) |
d0bcb1eb | 2120 | /* No way in DBX fmt to describe a variable size. */ |
e913b5cd | 2121 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
946754ae | 2122 | { |
2123 | /* If the type is just a cross reference, output one | |
2124 | and mark the type as partially described. | |
2125 | If it later becomes defined, we will output | |
2126 | its real definition. | |
2127 | If the type has a name, don't nest its definition within | |
2128 | another type's definition; instead, output an xref | |
2129 | and let the definition come when the name is defined. */ | |
d0de818d | 2130 | stabstr_S ((TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu"); |
48dcce25 | 2131 | if (TYPE_IDENTIFIER (type)) |
2132 | { | |
2133 | /* Note that the C frontend creates for anonymous variable | |
2134 | length records/unions TYPE_NAME with DECL_NAME NULL. */ | |
2135 | dbxout_type_name (type); | |
2136 | } | |
c61d074f | 2137 | else |
d4b87fe5 | 2138 | { |
d0de818d | 2139 | stabstr_S ("$$"); |
2140 | stabstr_D (anonymous_type_number++); | |
d4b87fe5 | 2141 | } |
2142 | ||
d0de818d | 2143 | stabstr_C (':'); |
54ae7e56 | 2144 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
946754ae | 2145 | break; |
2146 | } | |
946754ae | 2147 | |
946754ae | 2148 | /* Identify record or union, and print its size. */ |
d0de818d | 2149 | stabstr_C ((TREE_CODE (type) == RECORD_TYPE) ? 's' : 'u'); |
2150 | stabstr_D (int_size_in_bytes (type)); | |
946754ae | 2151 | |
f6cc6a08 | 2152 | if (binfo) |
946754ae | 2153 | { |
f6cc6a08 | 2154 | int i; |
2155 | tree child; | |
f1f41a6c | 2156 | vec<tree, va_gc> *accesses = BINFO_BASE_ACCESSES (binfo); |
48e1416a | 2157 | |
9cdc08c6 | 2158 | if (use_gnu_debug_info_extensions) |
946754ae | 2159 | { |
f6cc6a08 | 2160 | if (BINFO_N_BASE_BINFOS (binfo)) |
2161 | { | |
d0de818d | 2162 | stabstr_C ('!'); |
2163 | stabstr_U (BINFO_N_BASE_BINFOS (binfo)); | |
2164 | stabstr_C (','); | |
f6cc6a08 | 2165 | } |
946754ae | 2166 | } |
f6cc6a08 | 2167 | for (i = 0; BINFO_BASE_ITERATE (binfo, i, child); i++) |
946754ae | 2168 | { |
f1f41a6c | 2169 | tree access = (accesses ? (*accesses)[i] : access_public_node); |
f6cc6a08 | 2170 | |
2171 | if (use_gnu_debug_info_extensions) | |
2172 | { | |
d0de818d | 2173 | stabstr_C (BINFO_VIRTUAL_P (child) ? '1' : '0'); |
2174 | stabstr_C (access == access_public_node ? '2' : | |
2175 | access == access_protected_node | |
2176 | ? '1' :'0'); | |
f6cc6a08 | 2177 | if (BINFO_VIRTUAL_P (child) |
3a4a2292 | 2178 | && (lang_GNU_CXX () |
9e564f0b | 2179 | || strcmp (lang_hooks.name, "GNU Objective-C++") == 0)) |
f6cc6a08 | 2180 | /* For a virtual base, print the (negative) |
2181 | offset within the vtable where we must look | |
2182 | to find the necessary adjustment. */ | |
d0de818d | 2183 | stabstr_D |
e913b5cd | 2184 | (tree_to_shwi (BINFO_VPTR_FIELD (child)) |
f6cc6a08 | 2185 | * BITS_PER_UNIT); |
2186 | else | |
e913b5cd | 2187 | stabstr_D (tree_to_shwi (BINFO_OFFSET (child)) |
d0de818d | 2188 | * BITS_PER_UNIT); |
2189 | stabstr_C (','); | |
f6cc6a08 | 2190 | dbxout_type (BINFO_TYPE (child), 0); |
d0de818d | 2191 | stabstr_C (';'); |
f6cc6a08 | 2192 | } |
2193 | else | |
2194 | { | |
2195 | /* Print out the base class information with | |
2196 | fields which have the same names at the types | |
2197 | they hold. */ | |
2198 | dbxout_type_name (BINFO_TYPE (child)); | |
d0de818d | 2199 | stabstr_C (':'); |
f6cc6a08 | 2200 | dbxout_type (BINFO_TYPE (child), full); |
d0de818d | 2201 | stabstr_C (','); |
e913b5cd | 2202 | stabstr_D (tree_to_shwi (BINFO_OFFSET (child)) |
d0de818d | 2203 | * BITS_PER_UNIT); |
2204 | stabstr_C (','); | |
2205 | stabstr_D | |
e913b5cd | 2206 | (tree_to_shwi (TYPE_SIZE (BINFO_TYPE (child))) |
f6cc6a08 | 2207 | * BITS_PER_UNIT); |
d0de818d | 2208 | stabstr_C (';'); |
f6cc6a08 | 2209 | } |
946754ae | 2210 | } |
2211 | } | |
2212 | } | |
2213 | ||
946754ae | 2214 | /* Write out the field declarations. */ |
2215 | dbxout_type_fields (type); | |
9cdc08c6 | 2216 | if (use_gnu_debug_info_extensions && TYPE_METHODS (type) != NULL_TREE) |
946754ae | 2217 | { |
946754ae | 2218 | dbxout_type_methods (type); |
2219 | } | |
5d844ba2 | 2220 | |
d0de818d | 2221 | stabstr_C (';'); |
946754ae | 2222 | |
9cdc08c6 | 2223 | if (use_gnu_debug_info_extensions && TREE_CODE (type) == RECORD_TYPE |
946754ae | 2224 | /* Avoid the ~ if we don't really need it--it confuses dbx. */ |
2225 | && TYPE_VFIELD (type)) | |
2226 | { | |
946754ae | 2227 | |
946754ae | 2228 | /* We need to write out info about what field this class |
2229 | uses as its "main" vtable pointer field, because if this | |
2230 | field is inherited from a base class, GDB cannot necessarily | |
2231 | figure out which field it's using in time. */ | |
d0de818d | 2232 | stabstr_S ("~%"); |
2233 | dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0); | |
2234 | stabstr_C (';'); | |
946754ae | 2235 | } |
2236 | break; | |
2237 | ||
2238 | case ENUMERAL_TYPE: | |
5c579180 | 2239 | /* We must use the same test here as we use in the DBX_NO_XREFS case |
2240 | above. We simplify it a bit since an enum will never have a variable | |
2241 | size. */ | |
2242 | if ((TYPE_NAME (type) != 0 | |
2243 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
2244 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
2245 | && !full) | |
4b72716d | 2246 | || !COMPLETE_TYPE_P (type)) |
946754ae | 2247 | { |
d0de818d | 2248 | stabstr_S ("xe"); |
946754ae | 2249 | dbxout_type_name (type); |
54ae7e56 | 2250 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
d0de818d | 2251 | stabstr_C (':'); |
946754ae | 2252 | return; |
2253 | } | |
1b99826f | 2254 | if (use_gnu_debug_info_extensions |
2255 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
d4b87fe5 | 2256 | { |
d0de818d | 2257 | stabstr_S ("@s"); |
2258 | stabstr_D (TYPE_PRECISION (type)); | |
2259 | stabstr_C (';'); | |
d4b87fe5 | 2260 | } |
2261 | ||
d0de818d | 2262 | stabstr_C ('e'); |
946754ae | 2263 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) |
2264 | { | |
3f00a6c0 | 2265 | tree value = TREE_VALUE (tem); |
2266 | ||
d0de818d | 2267 | stabstr_I (TREE_PURPOSE (tem)); |
2268 | stabstr_C (':'); | |
2269 | ||
3f00a6c0 | 2270 | if (TREE_CODE (value) == CONST_DECL) |
2271 | value = DECL_INITIAL (value); | |
2272 | ||
ddb1be65 | 2273 | if (cst_and_fits_in_hwi (value)) |
f9ae6f95 | 2274 | stabstr_D (TREE_INT_CST_LOW (value)); |
01f7da0d | 2275 | else |
3f00a6c0 | 2276 | stabstr_O (value); |
d4b87fe5 | 2277 | |
d0de818d | 2278 | stabstr_C (','); |
946754ae | 2279 | if (TREE_CHAIN (tem) != 0) |
d4b87fe5 | 2280 | CONTIN; |
946754ae | 2281 | } |
d4b87fe5 | 2282 | |
d0de818d | 2283 | stabstr_C (';'); |
946754ae | 2284 | break; |
2285 | ||
2286 | case POINTER_TYPE: | |
d0de818d | 2287 | stabstr_C ('*'); |
9aa97f08 | 2288 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2289 | break; |
2290 | ||
2291 | case METHOD_TYPE: | |
9cdc08c6 | 2292 | if (use_gnu_debug_info_extensions) |
946754ae | 2293 | { |
d0de818d | 2294 | stabstr_C ('#'); |
9aa97f08 | 2295 | |
2296 | /* Write the argument types out longhand. */ | |
2297 | dbxout_type (TYPE_METHOD_BASETYPE (type), 0); | |
d0de818d | 2298 | stabstr_C (','); |
9aa97f08 | 2299 | dbxout_type (TREE_TYPE (type), 0); |
2300 | dbxout_args (TYPE_ARG_TYPES (type)); | |
d0de818d | 2301 | stabstr_C (';'); |
946754ae | 2302 | } |
2303 | else | |
d4b87fe5 | 2304 | /* Treat it as a function type. */ |
2305 | dbxout_type (TREE_TYPE (type), 0); | |
946754ae | 2306 | break; |
2307 | ||
2308 | case OFFSET_TYPE: | |
9cdc08c6 | 2309 | if (use_gnu_debug_info_extensions) |
946754ae | 2310 | { |
d0de818d | 2311 | stabstr_C ('@'); |
9aa97f08 | 2312 | dbxout_type (TYPE_OFFSET_BASETYPE (type), 0); |
d0de818d | 2313 | stabstr_C (','); |
9aa97f08 | 2314 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2315 | } |
2316 | else | |
d4b87fe5 | 2317 | /* Should print as an int, because it is really just an offset. */ |
2318 | dbxout_type (integer_type_node, 0); | |
946754ae | 2319 | break; |
2320 | ||
2321 | case REFERENCE_TYPE: | |
9cdc08c6 | 2322 | if (use_gnu_debug_info_extensions) |
d0de818d | 2323 | { |
d0de818d | 2324 | stabstr_C ('&'); |
2325 | } | |
2326 | else | |
2327 | stabstr_C ('*'); | |
9aa97f08 | 2328 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2329 | break; |
2330 | ||
2331 | case FUNCTION_TYPE: | |
d0de818d | 2332 | stabstr_C ('f'); |
9aa97f08 | 2333 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2334 | break; |
2335 | ||
058a1b7a | 2336 | case POINTER_BOUNDS_TYPE: |
2337 | /* No debug info for pointer bounds type supported yet. */ | |
2338 | break; | |
2339 | ||
946754ae | 2340 | default: |
fac0decd | 2341 | /* A C++ function with deduced return type can have a TEMPLATE_TYPE_PARM |
2342 | named 'auto' in its type. | |
2343 | No debug info for TEMPLATE_TYPE_PARM type supported yet. */ | |
2344 | if (lang_GNU_CXX ()) | |
2345 | { | |
2346 | tree name = TYPE_IDENTIFIER (type); | |
2347 | if (name == get_identifier ("auto") | |
2348 | || name == get_identifier ("decltype(auto)")) | |
2349 | break; | |
2350 | } | |
2351 | ||
7bd4f6b6 | 2352 | gcc_unreachable (); |
946754ae | 2353 | } |
2354 | } | |
2355 | ||
7ef5b942 | 2356 | /* Return nonzero if the given type represents an integer whose bounds |
0989224f | 2357 | should be printed in octal format. */ |
2358 | ||
2359 | static bool | |
a9538d68 | 2360 | print_int_cst_bounds_in_octal_p (tree type, tree low, tree high) |
0989224f | 2361 | { |
2362 | /* If we can use GDB extensions and the size is wider than a long | |
2363 | (the size used by GDB to read them) or we may have trouble writing | |
2364 | the bounds the usual way, write them in octal. Note the test is for | |
2365 | the *target's* size of "long", not that of the host. The host test | |
2366 | is just to make sure we can write it out in case the host wide int | |
2367 | is narrower than the target "long". | |
8ec3a57b | 2368 | |
0989224f | 2369 | For unsigned types, we use octal if they are the same size or larger. |
2370 | This is because we print the bounds as signed decimal, and hence they | |
2371 | can't span same size unsigned types. */ | |
2372 | ||
2373 | if (use_gnu_debug_info_extensions | |
a9538d68 | 2374 | && low && TREE_CODE (low) == INTEGER_CST |
2375 | && high && TREE_CODE (high) == INTEGER_CST | |
0989224f | 2376 | && (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node) |
2377 | || ((TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node)) | |
78a8ed03 | 2378 | && TYPE_UNSIGNED (type)) |
0989224f | 2379 | || TYPE_PRECISION (type) > HOST_BITS_PER_WIDE_INT |
2380 | || (TYPE_PRECISION (type) == HOST_BITS_PER_WIDE_INT | |
78a8ed03 | 2381 | && TYPE_UNSIGNED (type)))) |
0989224f | 2382 | return TRUE; |
2383 | else | |
2384 | return FALSE; | |
2385 | } | |
2386 | ||
946754ae | 2387 | /* Output the name of type TYPE, with no punctuation. |
2388 | Such names can be set up either by typedef declarations | |
2389 | or by struct, enum and union tags. */ | |
2390 | ||
2391 | static void | |
8ec3a57b | 2392 | dbxout_type_name (tree type) |
946754ae | 2393 | { |
7bd4f6b6 | 2394 | tree t = TYPE_NAME (type); |
48e1416a | 2395 | |
7bd4f6b6 | 2396 | gcc_assert (t); |
2397 | switch (TREE_CODE (t)) | |
946754ae | 2398 | { |
7bd4f6b6 | 2399 | case IDENTIFIER_NODE: |
2400 | break; | |
2401 | case TYPE_DECL: | |
2402 | t = DECL_NAME (t); | |
2403 | break; | |
2404 | default: | |
2405 | gcc_unreachable (); | |
946754ae | 2406 | } |
946754ae | 2407 | |
d0de818d | 2408 | stabstr_I (t); |
946754ae | 2409 | } |
d251e975 | 2410 | |
47ae02b7 | 2411 | /* Output leading struct or class names needed for qualifying type |
2412 | whose scope is limited to a struct or class. */ | |
d251e975 | 2413 | |
2414 | static void | |
8ec3a57b | 2415 | dbxout_class_name_qualifiers (tree decl) |
d251e975 | 2416 | { |
2417 | tree context = decl_type_context (decl); | |
2418 | ||
8ec3a57b | 2419 | if (context != NULL_TREE |
9af5ce0c | 2420 | && TREE_CODE (context) == RECORD_TYPE |
8ec3a57b | 2421 | && TYPE_NAME (context) != 0 |
d251e975 | 2422 | && (TREE_CODE (TYPE_NAME (context)) == IDENTIFIER_NODE |
2423 | || (DECL_NAME (TYPE_NAME (context)) != 0))) | |
2424 | { | |
2425 | tree name = TYPE_NAME (context); | |
2426 | ||
2427 | if (TREE_CODE (name) == TYPE_DECL) | |
2428 | { | |
2429 | dbxout_class_name_qualifiers (name); | |
2430 | name = DECL_NAME (name); | |
2431 | } | |
d0de818d | 2432 | stabstr_I (name); |
2433 | stabstr_S ("::"); | |
d251e975 | 2434 | } |
2435 | } | |
946754ae | 2436 | \f |
be770f90 | 2437 | /* This is a specialized subset of expand_expr for use by dbxout_symbol in |
2438 | evaluating DECL_VALUE_EXPR. In particular, we stop if we find decls that | |
f0b5f617 | 2439 | haven't been expanded, or if the expression is getting so complex we won't |
be770f90 | 2440 | be able to represent it in stabs anyway. Returns NULL on failure. */ |
2441 | ||
2442 | static rtx | |
2443 | dbxout_expand_expr (tree expr) | |
2444 | { | |
2445 | switch (TREE_CODE (expr)) | |
2446 | { | |
2447 | case VAR_DECL: | |
e845094d | 2448 | /* We can't handle emulated tls variables, because the address is an |
2449 | offset to the return value of __emutls_get_address, and there is no | |
2450 | way to express that in stabs. Also, there are name mangling issues | |
2451 | here. We end up with references to undefined symbols if we don't | |
2452 | disable debug info for these variables. */ | |
2453 | if (!targetm.have_tls && DECL_THREAD_LOCAL_P (expr)) | |
2454 | return NULL; | |
dc0bd85b | 2455 | if (TREE_STATIC (expr) |
2456 | && !TREE_ASM_WRITTEN (expr) | |
2457 | && !DECL_HAS_VALUE_EXPR_P (expr) | |
2458 | && !TREE_PUBLIC (expr) | |
2459 | && DECL_RTL_SET_P (expr) | |
2460 | && MEM_P (DECL_RTL (expr))) | |
2461 | { | |
2462 | /* If this is a var that might not be actually output, | |
2463 | return NULL, otherwise stabs might reference an undefined | |
2464 | symbol. */ | |
97221fd7 | 2465 | varpool_node *node = varpool_node::get (expr); |
02774f2d | 2466 | if (!node || !node->definition) |
dc0bd85b | 2467 | return NULL; |
2468 | } | |
e845094d | 2469 | /* FALLTHRU */ |
2470 | ||
be770f90 | 2471 | case PARM_DECL: |
4d5b4e6a | 2472 | case RESULT_DECL: |
be770f90 | 2473 | if (DECL_HAS_VALUE_EXPR_P (expr)) |
2474 | return dbxout_expand_expr (DECL_VALUE_EXPR (expr)); | |
2475 | /* FALLTHRU */ | |
2476 | ||
2477 | case CONST_DECL: | |
be770f90 | 2478 | return DECL_RTL_IF_SET (expr); |
2479 | ||
2480 | case INTEGER_CST: | |
2481 | return expand_expr (expr, NULL_RTX, VOIDmode, EXPAND_INITIALIZER); | |
2482 | ||
2483 | case COMPONENT_REF: | |
2484 | case ARRAY_REF: | |
2485 | case ARRAY_RANGE_REF: | |
2486 | case BIT_FIELD_REF: | |
2487 | { | |
3754d046 | 2488 | machine_mode mode; |
be770f90 | 2489 | HOST_WIDE_INT bitsize, bitpos; |
2490 | tree offset, tem; | |
2491 | int volatilep = 0, unsignedp = 0; | |
2492 | rtx x; | |
2493 | ||
2494 | tem = get_inner_reference (expr, &bitsize, &bitpos, &offset, | |
2495 | &mode, &unsignedp, &volatilep, true); | |
2496 | ||
2497 | x = dbxout_expand_expr (tem); | |
2498 | if (x == NULL || !MEM_P (x)) | |
2499 | return NULL; | |
2500 | if (offset != NULL) | |
2501 | { | |
e913b5cd | 2502 | if (!tree_fits_shwi_p (offset)) |
be770f90 | 2503 | return NULL; |
e913b5cd | 2504 | x = adjust_address_nv (x, mode, tree_to_shwi (offset)); |
be770f90 | 2505 | } |
2506 | if (bitpos != 0) | |
2507 | x = adjust_address_nv (x, mode, bitpos / BITS_PER_UNIT); | |
2508 | ||
2509 | return x; | |
2510 | } | |
2511 | ||
2512 | default: | |
2513 | return NULL; | |
2514 | } | |
2515 | } | |
2516 | ||
c8c04e0d | 2517 | /* Helper function for output_used_types. Queue one entry from the |
2518 | used types hash to be output. */ | |
2519 | ||
8f359205 | 2520 | bool |
2521 | output_used_types_helper (tree const &type, vec<tree> *types_p) | |
c8c04e0d | 2522 | { |
c8c04e0d | 2523 | if ((TREE_CODE (type) == RECORD_TYPE |
2524 | || TREE_CODE (type) == UNION_TYPE | |
2525 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
2526 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
2527 | && TYPE_STUB_DECL (type) | |
2528 | && DECL_P (TYPE_STUB_DECL (type)) | |
2529 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (type))) | |
f1f41a6c | 2530 | types_p->quick_push (TYPE_STUB_DECL (type)); |
c8c04e0d | 2531 | else if (TYPE_NAME (type) |
2532 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
f1f41a6c | 2533 | types_p->quick_push (TYPE_NAME (type)); |
c8c04e0d | 2534 | |
8f359205 | 2535 | return true; |
c8c04e0d | 2536 | } |
2537 | ||
c32222a3 | 2538 | /* This is a qsort callback which sorts types and declarations into a |
2539 | predictable order (types, then declarations, sorted by UID | |
2540 | within). */ | |
2541 | ||
18247eca | 2542 | static int |
2543 | output_types_sort (const void *pa, const void *pb) | |
2544 | { | |
2545 | const tree lhs = *((const tree *)pa); | |
2546 | const tree rhs = *((const tree *)pb); | |
2547 | ||
2548 | if (TYPE_P (lhs)) | |
2549 | { | |
2550 | if (TYPE_P (rhs)) | |
2551 | return TYPE_UID (lhs) - TYPE_UID (rhs); | |
2552 | else | |
2553 | return 1; | |
2554 | } | |
2555 | else | |
2556 | { | |
2557 | if (TYPE_P (rhs)) | |
2558 | return -1; | |
2559 | else | |
2560 | return DECL_UID (lhs) - DECL_UID (rhs); | |
2561 | } | |
2562 | } | |
2563 | ||
2564 | ||
c8c04e0d | 2565 | /* Force all types used by this function to be output in debug |
2566 | information. */ | |
c32222a3 | 2567 | |
c8c04e0d | 2568 | static void |
2569 | output_used_types (void) | |
2570 | { | |
2571 | if (cfun && cfun->used_types_hash) | |
18247eca | 2572 | { |
f1f41a6c | 2573 | vec<tree> types; |
18247eca | 2574 | int i; |
2575 | tree type; | |
2576 | ||
8f359205 | 2577 | types.create (cfun->used_types_hash->elements ()); |
2578 | cfun->used_types_hash->traverse<vec<tree> *, output_used_types_helper> | |
2579 | (&types); | |
18247eca | 2580 | |
2581 | /* Sort by UID to prevent dependence on hash table ordering. */ | |
f1f41a6c | 2582 | types.qsort (output_types_sort); |
18247eca | 2583 | |
f1f41a6c | 2584 | FOR_EACH_VEC_ELT (types, i, type) |
18247eca | 2585 | debug_queue_symbol (type); |
c32222a3 | 2586 | |
f1f41a6c | 2587 | types.release (); |
18247eca | 2588 | } |
c8c04e0d | 2589 | } |
2590 | ||
946754ae | 2591 | /* Output a .stabs for the symbol defined by DECL, |
2592 | which must be a ..._DECL node in the normal namespace. | |
2593 | It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL. | |
d0309f39 | 2594 | LOCAL is nonzero if the scope is less than the entire file. |
2595 | Return 1 if a stabs might have been emitted. */ | |
946754ae | 2596 | |
d0309f39 | 2597 | int |
8ec3a57b | 2598 | dbxout_symbol (tree decl, int local ATTRIBUTE_UNUSED) |
946754ae | 2599 | { |
946754ae | 2600 | tree type = TREE_TYPE (decl); |
2601 | tree context = NULL_TREE; | |
d0309f39 | 2602 | int result = 0; |
50a7abc5 | 2603 | rtx decl_rtl; |
946754ae | 2604 | |
262444a6 | 2605 | /* "Intercept" dbxout_symbol() calls like we do all debug_hooks. */ |
2606 | ++debug_nesting; | |
2607 | ||
946754ae | 2608 | /* Ignore nameless syms, but don't ignore type tags. */ |
2609 | ||
2610 | if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL) | |
2611 | || DECL_IGNORED_P (decl)) | |
262444a6 | 2612 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
2613 | ||
d01481af | 2614 | /* If we are to generate only the symbols actually used then such |
06b27565 | 2615 | symbol nodes are flagged with TREE_USED. Ignore any that |
f0b5f617 | 2616 | aren't flagged as TREE_USED. */ |
8ec3a57b | 2617 | |
73ae3ef7 | 2618 | if (flag_debug_only_used_symbols |
2619 | && (!TREE_USED (decl) | |
2620 | && (TREE_CODE (decl) != VAR_DECL || !DECL_INITIAL (decl)))) | |
2621 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2622 | ||
2623 | /* If dbxout_init has not yet run, queue this symbol for later. */ | |
2624 | if (!typevec) | |
2625 | { | |
2626 | preinit_symbols = tree_cons (0, decl, preinit_symbols); | |
2627 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2628 | } | |
2629 | ||
262444a6 | 2630 | if (flag_debug_only_used_symbols) |
2631 | { | |
2632 | tree t; | |
2633 | ||
262444a6 | 2634 | /* We now have a used symbol. We need to generate the info for |
2635 | the symbol's type in addition to the symbol itself. These | |
2636 | type symbols are queued to be generated after were done with | |
d0de818d | 2637 | the symbol itself (otherwise they would fight over the |
2638 | stabstr obstack). | |
262444a6 | 2639 | |
2640 | Note, because the TREE_TYPE(type) might be something like a | |
2641 | pointer to a named type we need to look for the first name | |
2642 | we see following the TREE_TYPE chain. */ | |
2643 | ||
8ec3a57b | 2644 | t = type; |
262444a6 | 2645 | while (POINTER_TYPE_P (t)) |
2646 | t = TREE_TYPE (t); | |
2647 | ||
2648 | /* RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, and ENUMERAL_TYPE | |
2649 | need special treatment. The TYPE_STUB_DECL field in these | |
2650 | types generally represents the tag name type we want to | |
2651 | output. In addition there could be a typedef type with | |
2652 | a different name. In that case we also want to output | |
2653 | that. */ | |
2654 | ||
4f51d5ad | 2655 | if (TREE_CODE (t) == RECORD_TYPE |
262444a6 | 2656 | || TREE_CODE (t) == UNION_TYPE |
2657 | || TREE_CODE (t) == QUAL_UNION_TYPE | |
2658 | || TREE_CODE (t) == ENUMERAL_TYPE) | |
262444a6 | 2659 | { |
4f51d5ad | 2660 | if (TYPE_STUB_DECL (t) |
2661 | && TYPE_STUB_DECL (t) != decl | |
2662 | && DECL_P (TYPE_STUB_DECL (t)) | |
2663 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (t))) | |
2664 | { | |
2665 | debug_queue_symbol (TYPE_STUB_DECL (t)); | |
2666 | if (TYPE_NAME (t) | |
2667 | && TYPE_NAME (t) != TYPE_STUB_DECL (t) | |
2668 | && TYPE_NAME (t) != decl | |
2669 | && DECL_P (TYPE_NAME (t))) | |
2670 | debug_queue_symbol (TYPE_NAME (t)); | |
2671 | } | |
2672 | } | |
262444a6 | 2673 | else if (TYPE_NAME (t) |
2674 | && TYPE_NAME (t) != decl | |
ce45a448 | 2675 | && DECL_P (TYPE_NAME (t))) |
262444a6 | 2676 | debug_queue_symbol (TYPE_NAME (t)); |
2677 | } | |
946754ae | 2678 | |
51cec339 | 2679 | emit_pending_bincls_if_required (); |
2680 | ||
946754ae | 2681 | switch (TREE_CODE (decl)) |
2682 | { | |
2683 | case CONST_DECL: | |
2684 | /* Enum values are defined by defining the enum type. */ | |
2685 | break; | |
2686 | ||
2687 | case FUNCTION_DECL: | |
50a7abc5 | 2688 | decl_rtl = DECL_RTL_IF_SET (decl); |
2689 | if (!decl_rtl) | |
262444a6 | 2690 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
8fc7a3d0 | 2691 | if (DECL_EXTERNAL (decl)) |
946754ae | 2692 | break; |
2693 | /* Don't mention a nested function under its parent. */ | |
2694 | context = decl_function_context (decl); | |
2695 | if (context == current_function_decl) | |
2696 | break; | |
402946c1 | 2697 | /* Don't mention an inline instance of a nested function. */ |
2698 | if (context && DECL_FROM_INLINE (decl)) | |
2699 | break; | |
50a7abc5 | 2700 | if (!MEM_P (decl_rtl) |
2701 | || GET_CODE (XEXP (decl_rtl, 0)) != SYMBOL_REF) | |
946754ae | 2702 | break; |
946754ae | 2703 | |
c8c04e0d | 2704 | if (flag_debug_only_used_symbols) |
2705 | output_used_types (); | |
2706 | ||
d0de818d | 2707 | dbxout_begin_complex_stabs (); |
2708 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
2709 | stabstr_S (TREE_PUBLIC (decl) ? ":F" : ":f"); | |
d0309f39 | 2710 | result = 1; |
946754ae | 2711 | |
946754ae | 2712 | if (TREE_TYPE (type)) |
9aa97f08 | 2713 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2714 | else |
9aa97f08 | 2715 | dbxout_type (void_type_node, 0); |
946754ae | 2716 | |
2717 | /* For a nested function, when that function is compiled, | |
2718 | mention the containing function name | |
2719 | as well as (since dbx wants it) our own assembler-name. */ | |
2720 | if (context != 0) | |
d0de818d | 2721 | { |
2722 | stabstr_C (','); | |
2723 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
2724 | stabstr_C (','); | |
2725 | stabstr_I (DECL_NAME (context)); | |
2726 | } | |
946754ae | 2727 | |
50a7abc5 | 2728 | dbxout_finish_complex_stabs (decl, N_FUN, XEXP (decl_rtl, 0), 0, 0); |
946754ae | 2729 | break; |
2730 | ||
2731 | case TYPE_DECL: | |
946754ae | 2732 | /* Don't output the same typedef twice. |
2733 | And don't output what language-specific stuff doesn't want output. */ | |
53aaa4b2 | 2734 | if (TREE_ASM_WRITTEN (decl) || TYPE_DECL_SUPPRESS_DEBUG (decl)) |
262444a6 | 2735 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
946754ae | 2736 | |
73ae3ef7 | 2737 | /* Don't output typedefs for types with magic type numbers (XCOFF). */ |
2738 | #ifdef DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER | |
2739 | { | |
2740 | int fundamental_type_number = | |
2741 | DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER (decl); | |
2742 | ||
2743 | if (fundamental_type_number != 0) | |
2744 | { | |
2745 | TREE_ASM_WRITTEN (decl) = 1; | |
2746 | TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl)) = fundamental_type_number; | |
2747 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2748 | } | |
2749 | } | |
2750 | #endif | |
946754ae | 2751 | FORCE_TEXT; |
d0309f39 | 2752 | result = 1; |
1ecd86ea | 2753 | { |
2754 | int tag_needed = 1; | |
d78a5beb | 2755 | int did_output = 0; |
ef01e856 | 2756 | |
1ecd86ea | 2757 | if (DECL_NAME (decl)) |
2758 | { | |
2759 | /* Nonzero means we must output a tag as well as a typedef. */ | |
2760 | tag_needed = 0; | |
946754ae | 2761 | |
068adc53 | 2762 | /* Handle the case of a C++ structure or union |
2763 | where the TYPE_NAME is a TYPE_DECL | |
2764 | which gives both a typedef name and a tag. */ | |
2be77840 | 2765 | /* dbx requires the tag first and the typedef second. */ |
068adc53 | 2766 | if ((TREE_CODE (type) == RECORD_TYPE |
7f8a347a | 2767 | || TREE_CODE (type) == UNION_TYPE |
2768 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
068adc53 | 2769 | && TYPE_NAME (type) == decl |
04cb9ecc | 2770 | && !use_gnu_debug_info_extensions |
2be77840 | 2771 | && !TREE_ASM_WRITTEN (TYPE_NAME (type)) |
2772 | /* Distinguish the implicit typedefs of C++ | |
2773 | from explicit ones that might be found in C. */ | |
1eefe280 | 2774 | && DECL_ARTIFICIAL (decl) |
262444a6 | 2775 | /* Do not generate a tag for incomplete records. */ |
2776 | && COMPLETE_TYPE_P (type) | |
79433a4c | 2777 | /* Do not generate a tag for records of variable size, |
2778 | since this type can not be properly described in the | |
2779 | DBX format, and it confuses some tools such as objdump. */ | |
e913b5cd | 2780 | && tree_fits_uhwi_p (TYPE_SIZE (type))) |
068adc53 | 2781 | { |
48dcce25 | 2782 | tree name = TYPE_IDENTIFIER (type); |
068adc53 | 2783 | |
d0de818d | 2784 | dbxout_begin_complex_stabs (); |
2785 | stabstr_I (name); | |
2786 | stabstr_S (":T"); | |
9aa97f08 | 2787 | dbxout_type (type, 1); |
d0de818d | 2788 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, |
2789 | 0, 0, 0); | |
068adc53 | 2790 | } |
2791 | ||
d0de818d | 2792 | dbxout_begin_complex_stabs (); |
d251e975 | 2793 | |
04cb9ecc | 2794 | /* Output leading class/struct qualifiers. */ |
d251e975 | 2795 | if (use_gnu_debug_info_extensions) |
d0de818d | 2796 | dbxout_class_name_qualifiers (decl); |
d251e975 | 2797 | |
1ecd86ea | 2798 | /* Output typedef name. */ |
d0de818d | 2799 | stabstr_I (DECL_NAME (decl)); |
2800 | stabstr_C (':'); | |
ef01e856 | 2801 | |
1ecd86ea | 2802 | /* Short cut way to output a tag also. */ |
2803 | if ((TREE_CODE (type) == RECORD_TYPE | |
7f8a347a | 2804 | || TREE_CODE (type) == UNION_TYPE |
2805 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
3e5c6b4e | 2806 | && TYPE_NAME (type) == decl |
2807 | /* Distinguish the implicit typedefs of C++ | |
2808 | from explicit ones that might be found in C. */ | |
1eefe280 | 2809 | && DECL_ARTIFICIAL (decl)) |
1ecd86ea | 2810 | { |
04cb9ecc | 2811 | if (use_gnu_debug_info_extensions) |
1ecd86ea | 2812 | { |
d0de818d | 2813 | stabstr_C ('T'); |
1ecd86ea | 2814 | TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1; |
2815 | } | |
1ecd86ea | 2816 | } |
946754ae | 2817 | |
d0de818d | 2818 | stabstr_C ('t'); |
9aa97f08 | 2819 | dbxout_type (type, 1); |
d0de818d | 2820 | dbxout_finish_complex_stabs (decl, DBX_TYPE_DECL_STABS_CODE, |
2821 | 0, 0, 0); | |
d78a5beb | 2822 | did_output = 1; |
1ecd86ea | 2823 | } |
946754ae | 2824 | |
79433a4c | 2825 | /* Don't output a tag if this is an incomplete type. This prevents |
2826 | the sun4 Sun OS 4.x dbx from crashing. */ | |
dc891f3f | 2827 | |
06ce1380 | 2828 | if (tag_needed && TYPE_NAME (type) != 0 |
2829 | && (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE | |
2830 | || (DECL_NAME (TYPE_NAME (type)) != 0)) | |
4b72716d | 2831 | && COMPLETE_TYPE_P (type) |
1ecd86ea | 2832 | && !TREE_ASM_WRITTEN (TYPE_NAME (type))) |
2833 | { | |
2834 | /* For a TYPE_DECL with no name, but the type has a name, | |
2835 | output a tag. | |
2836 | This is what represents `struct foo' with no typedef. */ | |
2837 | /* In C++, the name of a type is the corresponding typedef. | |
2838 | In C, it is an IDENTIFIER_NODE. */ | |
48dcce25 | 2839 | tree name = TYPE_IDENTIFIER (type); |
1ecd86ea | 2840 | |
d0de818d | 2841 | dbxout_begin_complex_stabs (); |
2842 | stabstr_I (name); | |
2843 | stabstr_S (":T"); | |
9aa97f08 | 2844 | dbxout_type (type, 1); |
d0de818d | 2845 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, 0, 0, 0); |
d78a5beb | 2846 | did_output = 1; |
2847 | } | |
2848 | ||
d0de818d | 2849 | /* If an enum type has no name, it cannot be referred to, but |
2850 | we must output it anyway, to record the enumeration | |
2851 | constants. */ | |
2852 | ||
d78a5beb | 2853 | if (!did_output && TREE_CODE (type) == ENUMERAL_TYPE) |
2854 | { | |
d0de818d | 2855 | dbxout_begin_complex_stabs (); |
04c6b571 | 2856 | /* Some debuggers fail when given NULL names, so give this a |
d0de818d | 2857 | harmless name of " " (Why not "(anon)"?). */ |
2858 | stabstr_S (" :T"); | |
9aa97f08 | 2859 | dbxout_type (type, 1); |
d0de818d | 2860 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, 0, 0, 0); |
1ecd86ea | 2861 | } |
2862 | ||
2863 | /* Prevent duplicate output of a typedef. */ | |
2864 | TREE_ASM_WRITTEN (decl) = 1; | |
2865 | break; | |
2866 | } | |
946754ae | 2867 | |
2868 | case PARM_DECL: | |
75f6aa15 | 2869 | if (DECL_HAS_VALUE_EXPR_P (decl)) |
2870 | decl = DECL_VALUE_EXPR (decl); | |
2871 | ||
2872 | /* PARM_DECLs go in their own separate chain and are output by | |
2873 | dbxout_reg_parms and dbxout_parms, except for those that are | |
2874 | disguised VAR_DECLs like Out parameters in Ada. */ | |
2875 | gcc_assert (TREE_CODE (decl) == VAR_DECL); | |
2876 | ||
2877 | /* ... fall through ... */ | |
946754ae | 2878 | |
2879 | case RESULT_DECL: | |
946754ae | 2880 | case VAR_DECL: |
946754ae | 2881 | /* Don't mention a variable that is external. |
2882 | Let the file that defines it describe it. */ | |
8fc7a3d0 | 2883 | if (DECL_EXTERNAL (decl)) |
946754ae | 2884 | break; |
2885 | ||
2886 | /* If the variable is really a constant | |
d0de818d | 2887 | and not written in memory, inform the debugger. |
2888 | ||
2889 | ??? Why do we skip emitting the type and location in this case? */ | |
946754ae | 2890 | if (TREE_STATIC (decl) && TREE_READONLY (decl) |
2891 | && DECL_INITIAL (decl) != 0 | |
e913b5cd | 2892 | && tree_fits_shwi_p (DECL_INITIAL (decl)) |
946754ae | 2893 | && ! TREE_ASM_WRITTEN (decl) |
a495b38a | 2894 | && (DECL_FILE_SCOPE_P (decl) |
901f0910 | 2895 | || TREE_CODE (DECL_CONTEXT (decl)) == BLOCK |
2896 | || TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
d0de818d | 2897 | && TREE_PUBLIC (decl) == 0) |
946754ae | 2898 | { |
d0de818d | 2899 | /* The sun4 assembler does not grok this. */ |
5d844ba2 | 2900 | |
d0de818d | 2901 | if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE |
2902 | || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE) | |
2903 | { | |
8c53c46c | 2904 | HOST_WIDE_INT ival = tree_to_shwi (DECL_INITIAL (decl)); |
d0de818d | 2905 | |
2906 | dbxout_begin_complex_stabs (); | |
901f0910 | 2907 | dbxout_symbol_name (decl, NULL, 'c'); |
2908 | stabstr_S ("=i"); | |
d0de818d | 2909 | stabstr_D (ival); |
2910 | dbxout_finish_complex_stabs (0, N_LSYM, 0, 0, 0); | |
2911 | DBXOUT_DECR_NESTING; | |
2912 | return 1; | |
946754ae | 2913 | } |
d0de818d | 2914 | else |
2915 | break; | |
946754ae | 2916 | } |
d0de818d | 2917 | /* else it is something we handle like a normal variable. */ |
946754ae | 2918 | |
901f0910 | 2919 | decl_rtl = dbxout_expand_expr (decl); |
2920 | if (!decl_rtl) | |
2921 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2922 | ||
cc1bb56d | 2923 | if (!is_global_var (decl)) |
2924 | decl_rtl = eliminate_regs (decl_rtl, VOIDmode, NULL_RTX); | |
946754ae | 2925 | #ifdef LEAF_REG_REMAP |
d5bf7b64 | 2926 | if (crtl->uses_only_leaf_regs) |
50a7abc5 | 2927 | leaf_renumber_regs_insn (decl_rtl); |
946754ae | 2928 | #endif |
2929 | ||
50a7abc5 | 2930 | result = dbxout_symbol_location (decl, type, 0, decl_rtl); |
0dbd1c74 | 2931 | break; |
1eefe280 | 2932 | |
0dbd1c74 | 2933 | default: |
2934 | break; | |
3c5d2a1c | 2935 | } |
262444a6 | 2936 | DBXOUT_DECR_NESTING; |
d0309f39 | 2937 | return result; |
3c5d2a1c | 2938 | } |
2939 | \f | |
2940 | /* Output the stab for DECL, a VAR_DECL, RESULT_DECL or PARM_DECL. | |
2941 | Add SUFFIX to its name, if SUFFIX is not 0. | |
2942 | Describe the variable as residing in HOME | |
d0309f39 | 2943 | (usually HOME is DECL_RTL (DECL), but not always). |
2944 | Returns 1 if the stab was really emitted. */ | |
3c5d2a1c | 2945 | |
d0309f39 | 2946 | static int |
8ec3a57b | 2947 | dbxout_symbol_location (tree decl, tree type, const char *suffix, rtx home) |
3c5d2a1c | 2948 | { |
2949 | int letter = 0; | |
c1e61953 | 2950 | stab_code_type code; |
d0de818d | 2951 | rtx addr = 0; |
2952 | int number = 0; | |
3c5d2a1c | 2953 | int regno = -1; |
946754ae | 2954 | |
3c5d2a1c | 2955 | /* Don't mention a variable at all |
2956 | if it was completely optimized into nothingness. | |
1eefe280 | 2957 | |
9e042f31 | 2958 | If the decl was from an inline function, then its rtl |
3c5d2a1c | 2959 | is not identically the rtl that was used in this |
2960 | particular compilation. */ | |
aa6a7ab3 | 2961 | if (GET_CODE (home) == SUBREG) |
3c5d2a1c | 2962 | { |
2963 | rtx value = home; | |
701e46d0 | 2964 | |
3c5d2a1c | 2965 | while (GET_CODE (value) == SUBREG) |
701e46d0 | 2966 | value = SUBREG_REG (value); |
8ad4c111 | 2967 | if (REG_P (value)) |
946754ae | 2968 | { |
701e46d0 | 2969 | if (REGNO (value) >= FIRST_PSEUDO_REGISTER) |
d0309f39 | 2970 | return 0; |
946754ae | 2971 | } |
c6a6cdaa | 2972 | home = alter_subreg (&home, true); |
aa6a7ab3 | 2973 | } |
8ad4c111 | 2974 | if (REG_P (home)) |
aa6a7ab3 | 2975 | { |
2976 | regno = REGNO (home); | |
2977 | if (regno >= FIRST_PSEUDO_REGISTER) | |
2978 | return 0; | |
3c5d2a1c | 2979 | } |
2980 | ||
2981 | /* The kind-of-variable letter depends on where | |
2982 | the variable is and on the scope of its name: | |
2983 | G and N_GSYM for static storage and global scope, | |
2984 | S for static storage and file scope, | |
2985 | V for static storage and local scope, | |
2986 | for those two, use N_LCSYM if data is in bss segment, | |
2987 | N_STSYM if in data segment, N_FUN otherwise. | |
2988 | (We used N_FUN originally, then changed to N_STSYM | |
2989 | to please GDB. However, it seems that confused ld. | |
2990 | Now GDB has been fixed to like N_FUN, says Kingdon.) | |
2991 | no letter at all, and N_LSYM, for auto variable, | |
2992 | r and N_RSYM for register variable. */ | |
2993 | ||
d0de818d | 2994 | if (MEM_P (home) && GET_CODE (XEXP (home, 0)) == SYMBOL_REF) |
3c5d2a1c | 2995 | { |
2996 | if (TREE_PUBLIC (decl)) | |
946754ae | 2997 | { |
a12691f0 | 2998 | int offs; |
3c5d2a1c | 2999 | letter = 'G'; |
d0de818d | 3000 | code = N_GSYM; |
a12691f0 | 3001 | if (NULL != dbxout_common_check (decl, &offs)) |
3002 | { | |
3003 | letter = 'V'; | |
3004 | addr = 0; | |
3005 | number = offs; | |
3006 | } | |
946754ae | 3007 | } |
3c5d2a1c | 3008 | else |
946754ae | 3009 | { |
d0de818d | 3010 | addr = XEXP (home, 0); |
946754ae | 3011 | |
3c5d2a1c | 3012 | letter = decl_function_context (decl) ? 'V' : 'S'; |
946754ae | 3013 | |
a607ffb1 | 3014 | /* Some ports can transform a symbol ref into a label ref, |
3015 | because the symbol ref is too far away and has to be | |
3016 | dumped into a constant pool. Alternatively, the symbol | |
3017 | in the constant pool might be referenced by a different | |
3018 | symbol. */ | |
3019 | if (GET_CODE (addr) == SYMBOL_REF | |
3020 | && CONSTANT_POOL_ADDRESS_P (addr)) | |
3021 | { | |
3022 | bool marked; | |
3023 | rtx tmp = get_pool_constant_mark (addr, &marked); | |
3024 | ||
3025 | if (GET_CODE (tmp) == SYMBOL_REF) | |
3026 | { | |
3027 | addr = tmp; | |
3028 | if (CONSTANT_POOL_ADDRESS_P (addr)) | |
3029 | get_pool_constant_mark (addr, &marked); | |
3030 | else | |
3031 | marked = true; | |
3032 | } | |
3033 | else if (GET_CODE (tmp) == LABEL_REF) | |
3034 | { | |
3035 | addr = tmp; | |
3036 | marked = true; | |
3037 | } | |
3038 | ||
3039 | /* If all references to the constant pool were optimized | |
3040 | out, we just ignore the symbol. */ | |
3041 | if (!marked) | |
3042 | return 0; | |
3043 | } | |
3044 | ||
2def70a8 | 3045 | /* This should be the same condition as in assemble_variable, but |
3046 | we don't have access to dont_output_data here. So, instead, | |
3047 | we rely on the fact that error_mark_node initializers always | |
3048 | end up in bss for C++ and never end up in bss for C. */ | |
3049 | if (DECL_INITIAL (decl) == 0 | |
3a4a2292 | 3050 | || (lang_GNU_CXX () |
2def70a8 | 3051 | && DECL_INITIAL (decl) == error_mark_node)) |
a12691f0 | 3052 | { |
3053 | int offs; | |
3054 | code = N_LCSYM; | |
3055 | if (NULL != dbxout_common_check (decl, &offs)) | |
3056 | { | |
3057 | addr = 0; | |
3058 | number = offs; | |
3059 | letter = 'V'; | |
3060 | code = N_GSYM; | |
3061 | } | |
3062 | } | |
bcfbda84 | 3063 | else if (DECL_IN_TEXT_SECTION (decl)) |
3c5d2a1c | 3064 | /* This is not quite right, but it's the closest |
3065 | of all the codes that Unix defines. */ | |
d0de818d | 3066 | code = DBX_STATIC_CONST_VAR_CODE; |
3c5d2a1c | 3067 | else |
3068 | { | |
3069 | /* Ultrix `as' seems to need this. */ | |
946754ae | 3070 | #ifdef DBX_STATIC_STAB_DATA_SECTION |
2f14b1f9 | 3071 | switch_to_section (data_section); |
946754ae | 3072 | #endif |
d0de818d | 3073 | code = N_STSYM; |
946754ae | 3074 | } |
3075 | } | |
3c5d2a1c | 3076 | } |
3077 | else if (regno >= 0) | |
3078 | { | |
3079 | letter = 'r'; | |
d0de818d | 3080 | code = N_RSYM; |
3081 | number = DBX_REGISTER_NUMBER (regno); | |
3c5d2a1c | 3082 | } |
e16ceb8e | 3083 | else if (MEM_P (home) |
3084 | && (MEM_P (XEXP (home, 0)) | |
8ad4c111 | 3085 | || (REG_P (XEXP (home, 0)) |
bca4bea0 | 3086 | && REGNO (XEXP (home, 0)) != HARD_FRAME_POINTER_REGNUM |
3087 | && REGNO (XEXP (home, 0)) != STACK_POINTER_REGNUM | |
5ae82d58 | 3088 | #if !HARD_FRAME_POINTER_IS_ARG_POINTER |
bca4bea0 | 3089 | && REGNO (XEXP (home, 0)) != ARG_POINTER_REGNUM |
3090 | #endif | |
3091 | ))) | |
3c5d2a1c | 3092 | /* If the value is indirect by memory or by a register |
3093 | that isn't the frame pointer | |
3094 | then it means the object is variable-sized and address through | |
3095 | that register or stack slot. DBX has no way to represent this | |
3096 | so all we can do is output the variable as a pointer. | |
4ee9c684 | 3097 | If it's not a parameter, ignore it. */ |
3c5d2a1c | 3098 | { |
8ad4c111 | 3099 | if (REG_P (XEXP (home, 0))) |
946754ae | 3100 | { |
3101 | letter = 'r'; | |
d0de818d | 3102 | code = N_RSYM; |
756ab748 | 3103 | if (REGNO (XEXP (home, 0)) >= FIRST_PSEUDO_REGISTER) |
3104 | return 0; | |
d0de818d | 3105 | number = DBX_REGISTER_NUMBER (REGNO (XEXP (home, 0))); |
946754ae | 3106 | } |
3c5d2a1c | 3107 | else |
946754ae | 3108 | { |
d0de818d | 3109 | code = N_LSYM; |
3c5d2a1c | 3110 | /* RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))). |
946754ae | 3111 | We want the value of that CONST_INT. */ |
d0de818d | 3112 | number = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (home, 0), 0)); |
439c05a0 | 3113 | } |
3c5d2a1c | 3114 | |
3115 | /* Effectively do build_pointer_type, but don't cache this type, | |
3116 | since it might be temporary whereas the type it points to | |
3117 | might have been saved for inlining. */ | |
3118 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
3119 | type = make_node (POINTER_TYPE); | |
3120 | TREE_TYPE (type) = TREE_TYPE (decl); | |
3121 | } | |
e16ceb8e | 3122 | else if (MEM_P (home) |
8ad4c111 | 3123 | && REG_P (XEXP (home, 0))) |
3c5d2a1c | 3124 | { |
d0de818d | 3125 | code = N_LSYM; |
3126 | number = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); | |
3c5d2a1c | 3127 | } |
e16ceb8e | 3128 | else if (MEM_P (home) |
3c5d2a1c | 3129 | && GET_CODE (XEXP (home, 0)) == PLUS |
971ba038 | 3130 | && CONST_INT_P (XEXP (XEXP (home, 0), 1))) |
3c5d2a1c | 3131 | { |
d0de818d | 3132 | code = N_LSYM; |
3c5d2a1c | 3133 | /* RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
3134 | We want the value of that CONST_INT. */ | |
d0de818d | 3135 | number = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); |
3c5d2a1c | 3136 | } |
e16ceb8e | 3137 | else if (MEM_P (home) |
3c5d2a1c | 3138 | && GET_CODE (XEXP (home, 0)) == CONST) |
3139 | { | |
3140 | /* Handle an obscure case which can arise when optimizing and | |
3141 | when there are few available registers. (This is *always* | |
3142 | the case for i386/i486 targets). The RTL looks like | |
3143 | (MEM (CONST ...)) even though this variable is a local `auto' | |
3144 | or a local `register' variable. In effect, what has happened | |
3145 | is that the reload pass has seen that all assignments and | |
3146 | references for one such a local variable can be replaced by | |
3147 | equivalent assignments and references to some static storage | |
3148 | variable, thereby avoiding the need for a register. In such | |
3149 | cases we're forced to lie to debuggers and tell them that | |
3150 | this variable was itself `static'. */ | |
a12691f0 | 3151 | int offs; |
d0de818d | 3152 | code = N_LCSYM; |
3c5d2a1c | 3153 | letter = 'V'; |
a12691f0 | 3154 | if (NULL == dbxout_common_check (decl, &offs)) |
3155 | addr = XEXP (XEXP (home, 0), 0); | |
3156 | else | |
3157 | { | |
3158 | addr = 0; | |
3159 | number = offs; | |
3160 | code = N_GSYM; | |
3161 | } | |
3c5d2a1c | 3162 | } |
3163 | else if (GET_CODE (home) == CONCAT) | |
3164 | { | |
1ae99fd2 | 3165 | tree subtype; |
3166 | ||
3167 | /* If TYPE is not a COMPLEX_TYPE (it might be a RECORD_TYPE, | |
3168 | for example), then there is no easy way to figure out | |
3169 | what SUBTYPE should be. So, we give up. */ | |
3170 | if (TREE_CODE (type) != COMPLEX_TYPE) | |
3171 | return 0; | |
3172 | ||
3173 | subtype = TREE_TYPE (type); | |
3c5d2a1c | 3174 | |
3175 | /* If the variable's storage is in two parts, | |
3176 | output each as a separate stab with a modified name. */ | |
3177 | if (WORDS_BIG_ENDIAN) | |
3178 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 0)); | |
946754ae | 3179 | else |
3c5d2a1c | 3180 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 0)); |
946754ae | 3181 | |
3c5d2a1c | 3182 | if (WORDS_BIG_ENDIAN) |
3183 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 1)); | |
3184 | else | |
3185 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 1)); | |
d0309f39 | 3186 | return 1; |
3c5d2a1c | 3187 | } |
3188 | else | |
3189 | /* Address might be a MEM, when DECL is a variable-sized object. | |
3190 | Or it might be const0_rtx, meaning previous passes | |
3191 | want us to ignore this variable. */ | |
d0309f39 | 3192 | return 0; |
3c5d2a1c | 3193 | |
3194 | /* Ok, start a symtab entry and output the variable name. */ | |
8a2df6f8 | 3195 | emit_pending_bincls_if_required (); |
3196 | FORCE_TEXT; | |
439c05a0 | 3197 | |
3198 | #ifdef DBX_STATIC_BLOCK_START | |
d0de818d | 3199 | DBX_STATIC_BLOCK_START (asm_out_file, code); |
439c05a0 | 3200 | #endif |
3201 | ||
8a2df6f8 | 3202 | dbxout_begin_complex_stabs_noforcetext (); |
3c5d2a1c | 3203 | dbxout_symbol_name (decl, suffix, letter); |
9aa97f08 | 3204 | dbxout_type (type, 0); |
d0de818d | 3205 | dbxout_finish_complex_stabs (decl, code, addr, 0, number); |
439c05a0 | 3206 | |
3207 | #ifdef DBX_STATIC_BLOCK_END | |
d0de818d | 3208 | DBX_STATIC_BLOCK_END (asm_out_file, code); |
439c05a0 | 3209 | #endif |
d0309f39 | 3210 | return 1; |
3c5d2a1c | 3211 | } |
3212 | \f | |
3213 | /* Output the symbol name of DECL for a stabs, with suffix SUFFIX. | |
3214 | Then output LETTER to indicate the kind of location the symbol has. */ | |
3215 | ||
3216 | static void | |
8ec3a57b | 3217 | dbxout_symbol_name (tree decl, const char *suffix, int letter) |
3c5d2a1c | 3218 | { |
d0de818d | 3219 | tree name; |
b82967bc | 3220 | |
48e1416a | 3221 | if (DECL_CONTEXT (decl) |
cd3034ab | 3222 | && (TYPE_P (DECL_CONTEXT (decl)) |
3223 | || TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL)) | |
3224 | /* One slight hitch: if this is a VAR_DECL which is a class member | |
3225 | or a namespace member, we must put out the mangled name instead of the | |
b82967bc | 3226 | DECL_NAME. Note also that static member (variable) names DO NOT begin |
3227 | with underscores in .stabs directives. */ | |
d0de818d | 3228 | name = DECL_ASSEMBLER_NAME (decl); |
b82967bc | 3229 | else |
3230 | /* ...but if we're function-local, we don't want to include the junk | |
3231 | added by ASM_FORMAT_PRIVATE_NAME. */ | |
d0de818d | 3232 | name = DECL_NAME (decl); |
b82967bc | 3233 | |
d0de818d | 3234 | if (name) |
3235 | stabstr_I (name); | |
3236 | else | |
3237 | stabstr_S ("(anon)"); | |
3c5d2a1c | 3238 | |
d0de818d | 3239 | if (suffix) |
3240 | stabstr_S (suffix); | |
3241 | stabstr_C (':'); | |
d4b87fe5 | 3242 | if (letter) |
d0de818d | 3243 | stabstr_C (letter); |
946754ae | 3244 | } |
3245 | ||
a12691f0 | 3246 | |
3247 | /* Output the common block name for DECL in a stabs. | |
3248 | ||
3249 | Symbols in global common (.comm) get wrapped with an N_BCOMM/N_ECOMM pair | |
3250 | around each group of symbols in the same .comm area. The N_GSYM stabs | |
3251 | that are emitted only contain the offset in the common area. This routine | |
3252 | emits the N_BCOMM and N_ECOMM stabs. */ | |
3253 | ||
3254 | static void | |
c1e61953 | 3255 | dbxout_common_name (tree decl, const char *name, stab_code_type op) |
a12691f0 | 3256 | { |
3257 | dbxout_begin_complex_stabs (); | |
3258 | stabstr_S (name); | |
3259 | dbxout_finish_complex_stabs (decl, op, NULL_RTX, NULL, 0); | |
3260 | } | |
3261 | ||
3262 | /* Check decl to determine whether it is a VAR_DECL destined for storage in a | |
3263 | common area. If it is, the return value will be a non-null string giving | |
3264 | the name of the common storage block it will go into. If non-null, the | |
3265 | value is the offset into the common block for that symbol's storage. */ | |
3266 | ||
3267 | static const char * | |
3268 | dbxout_common_check (tree decl, int *value) | |
3269 | { | |
3270 | rtx home; | |
3271 | rtx sym_addr; | |
3272 | const char *name = NULL; | |
48e1416a | 3273 | |
e4eb345d | 3274 | /* If the decl isn't a VAR_DECL, or if it isn't static, or if |
a12691f0 | 3275 | it does not have a value (the offset into the common area), or if it |
3276 | is thread local (as opposed to global) then it isn't common, and shouldn't | |
3277 | be handled as such. | |
48e1416a | 3278 | |
a12691f0 | 3279 | ??? DECL_THREAD_LOCAL_P check prevents problems with improper .stabs |
3280 | for thread-local symbols. Can be handled via same mechanism as used | |
3281 | in dwarf2out.c. */ | |
3282 | if (TREE_CODE (decl) != VAR_DECL | |
9af5ce0c | 3283 | || !TREE_STATIC (decl) |
3284 | || !DECL_HAS_VALUE_EXPR_P (decl) | |
a12691f0 | 3285 | || DECL_THREAD_LOCAL_P (decl) |
3286 | || !is_fortran ()) | |
3287 | return NULL; | |
3288 | ||
48e1416a | 3289 | home = DECL_RTL (decl); |
a12691f0 | 3290 | if (home == NULL_RTX || GET_CODE (home) != MEM) |
3291 | return NULL; | |
3292 | ||
3293 | sym_addr = dbxout_expand_expr (DECL_VALUE_EXPR (decl)); | |
3294 | if (sym_addr == NULL_RTX || GET_CODE (sym_addr) != MEM) | |
3295 | return NULL; | |
3296 | ||
3297 | sym_addr = XEXP (sym_addr, 0); | |
3298 | if (GET_CODE (sym_addr) == CONST) | |
3299 | sym_addr = XEXP (sym_addr, 0); | |
3300 | if ((GET_CODE (sym_addr) == SYMBOL_REF || GET_CODE (sym_addr) == PLUS) | |
3301 | && DECL_INITIAL (decl) == 0) | |
3302 | { | |
3303 | ||
3304 | /* We have a sym that will go into a common area, meaning that it | |
3305 | will get storage reserved with a .comm/.lcomm assembler pseudo-op. | |
3306 | ||
3307 | Determine name of common area this symbol will be an offset into, | |
3308 | and offset into that area. Also retrieve the decl for the area | |
3309 | that the symbol is offset into. */ | |
3310 | tree cdecl = NULL; | |
3311 | ||
3312 | switch (GET_CODE (sym_addr)) | |
3313 | { | |
3314 | case PLUS: | |
971ba038 | 3315 | if (CONST_INT_P (XEXP (sym_addr, 0))) |
a12691f0 | 3316 | { |
3317 | name = | |
9af5ce0c | 3318 | targetm.strip_name_encoding (XSTR (XEXP (sym_addr, 1), 0)); |
a12691f0 | 3319 | *value = INTVAL (XEXP (sym_addr, 0)); |
3320 | cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 1)); | |
3321 | } | |
3322 | else | |
3323 | { | |
3324 | name = | |
9af5ce0c | 3325 | targetm.strip_name_encoding (XSTR (XEXP (sym_addr, 0), 0)); |
a12691f0 | 3326 | *value = INTVAL (XEXP (sym_addr, 1)); |
3327 | cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 0)); | |
3328 | } | |
3329 | break; | |
3330 | ||
3331 | case SYMBOL_REF: | |
9af5ce0c | 3332 | name = targetm.strip_name_encoding (XSTR (sym_addr, 0)); |
a12691f0 | 3333 | *value = 0; |
3334 | cdecl = SYMBOL_REF_DECL (sym_addr); | |
3335 | break; | |
3336 | ||
3337 | default: | |
3338 | error ("common symbol debug info is not structured as " | |
3339 | "symbol+offset"); | |
3340 | } | |
3341 | ||
3342 | /* Check area common symbol is offset into. If this is not public, then | |
3343 | it is not a symbol in a common block. It must be a .lcomm symbol, not | |
3344 | a .comm symbol. */ | |
9af5ce0c | 3345 | if (cdecl == NULL || !TREE_PUBLIC (cdecl)) |
a12691f0 | 3346 | name = NULL; |
3347 | } | |
3348 | else | |
3349 | name = NULL; | |
3350 | ||
3351 | return name; | |
3352 | } | |
3353 | ||
6ef828f9 | 3354 | /* Output definitions of all the decls in a chain. Return nonzero if |
d0309f39 | 3355 | anything was output */ |
946754ae | 3356 | |
d0309f39 | 3357 | int |
8ec3a57b | 3358 | dbxout_syms (tree syms) |
946754ae | 3359 | { |
d0309f39 | 3360 | int result = 0; |
a12691f0 | 3361 | const char *comm_prev = NULL; |
3362 | tree syms_prev = NULL; | |
3363 | ||
946754ae | 3364 | while (syms) |
3365 | { | |
a12691f0 | 3366 | int temp, copen, cclos; |
3367 | const char *comm_new; | |
3368 | ||
3369 | /* Check for common symbol, and then progression into a new/different | |
3370 | block of common symbols. Emit closing/opening common bracket if | |
3371 | necessary. */ | |
3372 | comm_new = dbxout_common_check (syms, &temp); | |
3373 | copen = comm_new != NULL | |
3374 | && (comm_prev == NULL || strcmp (comm_new, comm_prev)); | |
3375 | cclos = comm_prev != NULL | |
3376 | && (comm_new == NULL || strcmp (comm_new, comm_prev)); | |
3377 | if (cclos) | |
3378 | dbxout_common_name (syms_prev, comm_prev, N_ECOMM); | |
3379 | if (copen) | |
3380 | { | |
3381 | dbxout_common_name (syms, comm_new, N_BCOMM); | |
3382 | syms_prev = syms; | |
3383 | } | |
3384 | comm_prev = comm_new; | |
3385 | ||
d0309f39 | 3386 | result += dbxout_symbol (syms, 1); |
1767a056 | 3387 | syms = DECL_CHAIN (syms); |
946754ae | 3388 | } |
a12691f0 | 3389 | |
3390 | if (comm_prev != NULL) | |
3391 | dbxout_common_name (syms_prev, comm_prev, N_ECOMM); | |
3392 | ||
d0309f39 | 3393 | return result; |
946754ae | 3394 | } |
3395 | \f | |
3396 | /* The following two functions output definitions of function parameters. | |
3397 | Each parameter gets a definition locating it in the parameter list. | |
3398 | Each parameter that is a register variable gets a second definition | |
3399 | locating it in the register. | |
3400 | ||
3401 | Printing or argument lists in gdb uses the definitions that | |
3402 | locate in the parameter list. But reference to the variable in | |
3403 | expressions uses preferentially the definition as a register. */ | |
3404 | ||
3405 | /* Output definitions, referring to storage in the parmlist, | |
3406 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
3407 | ||
439c05a0 | 3408 | void |
8ec3a57b | 3409 | dbxout_parms (tree parms) |
946754ae | 3410 | { |
262444a6 | 3411 | ++debug_nesting; |
51cec339 | 3412 | emit_pending_bincls_if_required (); |
3413 | ||
1767a056 | 3414 | for (; parms; parms = DECL_CHAIN (parms)) |
043dbdf4 | 3415 | if (DECL_NAME (parms) |
3416 | && TREE_TYPE (parms) != error_mark_node | |
3417 | && DECL_RTL_SET_P (parms) | |
3418 | && DECL_INCOMING_RTL (parms)) | |
946754ae | 3419 | { |
d0de818d | 3420 | tree eff_type; |
3421 | char letter; | |
c1e61953 | 3422 | stab_code_type code; |
d0de818d | 3423 | int number; |
946754ae | 3424 | |
3425 | /* Perform any necessary register eliminations on the parameter's rtl, | |
3426 | so that the debugging output will be accurate. */ | |
3427 | DECL_INCOMING_RTL (parms) | |
b9c74b4d | 3428 | = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX); |
3429 | SET_DECL_RTL (parms, | |
3430 | eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX)); | |
946754ae | 3431 | #ifdef LEAF_REG_REMAP |
d5bf7b64 | 3432 | if (crtl->uses_only_leaf_regs) |
946754ae | 3433 | { |
3434 | leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms)); | |
3435 | leaf_renumber_regs_insn (DECL_RTL (parms)); | |
3436 | } | |
3437 | #endif | |
3438 | ||
3439 | if (PARM_PASSED_IN_MEMORY (parms)) | |
3440 | { | |
d0de818d | 3441 | rtx inrtl = XEXP (DECL_INCOMING_RTL (parms), 0); |
946754ae | 3442 | |
3443 | /* ??? Here we assume that the parm address is indexed | |
3444 | off the frame pointer or arg pointer. | |
3445 | If that is not true, we produce meaningless results, | |
3446 | but do not crash. */ | |
d0de818d | 3447 | if (GET_CODE (inrtl) == PLUS |
971ba038 | 3448 | && CONST_INT_P (XEXP (inrtl, 1))) |
d0de818d | 3449 | number = INTVAL (XEXP (inrtl, 1)); |
946754ae | 3450 | else |
d0de818d | 3451 | number = 0; |
3452 | ||
3453 | code = N_PSYM; | |
3454 | number = DEBUGGER_ARG_OFFSET (number, inrtl); | |
3455 | letter = 'p'; | |
3456 | ||
3457 | /* It is quite tempting to use TREE_TYPE (parms) instead | |
3458 | of DECL_ARG_TYPE (parms) for the eff_type, so that gcc | |
3459 | reports the actual type of the parameter, rather than | |
3460 | the promoted type. This certainly makes GDB's life | |
3461 | easier, at least for some ports. The change is a bad | |
3462 | idea however, since GDB expects to be able access the | |
3463 | type without performing any conversions. So for | |
3464 | example, if we were passing a float to an unprototyped | |
3465 | function, gcc will store a double on the stack, but if | |
3466 | we emit a stab saying the type is a float, then gdb | |
3467 | will only read in a single value, and this will produce | |
3468 | an erroneous value. */ | |
3469 | eff_type = DECL_ARG_TYPE (parms); | |
946754ae | 3470 | } |
8ad4c111 | 3471 | else if (REG_P (DECL_RTL (parms))) |
946754ae | 3472 | { |
3473 | rtx best_rtl; | |
52eab9d6 | 3474 | |
d0de818d | 3475 | /* Parm passed in registers and lives in registers or nowhere. */ |
3476 | code = DBX_REGPARM_STABS_CODE; | |
3477 | letter = DBX_REGPARM_STABS_LETTER; | |
3478 | ||
3479 | /* For parms passed in registers, it is better to use the | |
3480 | declared type of the variable, not the type it arrived in. */ | |
3481 | eff_type = TREE_TYPE (parms); | |
3482 | ||
3483 | /* If parm lives in a register, use that register; pretend | |
3484 | the parm was passed there. It would be more consistent | |
3485 | to describe the register where the parm was passed, but | |
3486 | in practice that register usually holds something else. | |
3487 | If the parm lives nowhere, use the register where it | |
3488 | was passed. */ | |
02e7a332 | 3489 | if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
d0de818d | 3490 | best_rtl = DECL_RTL (parms); |
ab26248e | 3491 | else if (GET_CODE (DECL_INCOMING_RTL (parms)) == PARALLEL) |
3492 | best_rtl = XEXP (XVECEXP (DECL_INCOMING_RTL (parms), 0, 0), 0); | |
946754ae | 3493 | else |
d0de818d | 3494 | best_rtl = DECL_INCOMING_RTL (parms); |
946754ae | 3495 | |
d0de818d | 3496 | number = DBX_REGISTER_NUMBER (REGNO (best_rtl)); |
946754ae | 3497 | } |
e16ceb8e | 3498 | else if (MEM_P (DECL_RTL (parms)) |
8ad4c111 | 3499 | && REG_P (XEXP (DECL_RTL (parms), 0)) |
cb8b8ba0 | 3500 | && REGNO (XEXP (DECL_RTL (parms), 0)) != HARD_FRAME_POINTER_REGNUM |
3501 | && REGNO (XEXP (DECL_RTL (parms), 0)) != STACK_POINTER_REGNUM | |
5ae82d58 | 3502 | #if !HARD_FRAME_POINTER_IS_ARG_POINTER |
cb8b8ba0 | 3503 | && REGNO (XEXP (DECL_RTL (parms), 0)) != ARG_POINTER_REGNUM |
3504 | #endif | |
3505 | ) | |
f10caba4 | 3506 | { |
3507 | /* Parm was passed via invisible reference. | |
3508 | That is, its address was passed in a register. | |
3509 | Output it as if it lived in that register. | |
3510 | The debugger will know from the type | |
5ac2bc37 | 3511 | that it was actually passed by invisible reference. */ |
52cae7bf | 3512 | |
d0de818d | 3513 | code = DBX_REGPARM_STABS_CODE; |
48e1416a | 3514 | |
d0de818d | 3515 | /* GDB likes this marked with a special letter. */ |
3516 | letter = (use_gnu_debug_info_extensions | |
3517 | ? 'a' : DBX_REGPARM_STABS_LETTER); | |
3518 | eff_type = TREE_TYPE (parms); | |
f10caba4 | 3519 | |
3bf2cac3 | 3520 | /* DECL_RTL looks like (MEM (REG...). Get the register number. |
3521 | If it is an unallocated pseudo-reg, then use the register where | |
d0de818d | 3522 | it was passed instead. |
3523 | ??? Why is DBX_REGISTER_NUMBER not used here? */ | |
3bf2cac3 | 3524 | |
d0de818d | 3525 | if (REGNO (XEXP (DECL_RTL (parms), 0)) < FIRST_PSEUDO_REGISTER) |
3526 | number = REGNO (XEXP (DECL_RTL (parms), 0)); | |
f10caba4 | 3527 | else |
d0de818d | 3528 | number = REGNO (DECL_INCOMING_RTL (parms)); |
f10caba4 | 3529 | } |
e16ceb8e | 3530 | else if (MEM_P (DECL_RTL (parms)) |
3531 | && MEM_P (XEXP (DECL_RTL (parms), 0))) | |
8c03ddcf | 3532 | { |
3533 | /* Parm was passed via invisible reference, with the reference | |
3534 | living on the stack. DECL_RTL looks like | |
eed9d2f3 | 3535 | (MEM (MEM (PLUS (REG ...) (CONST_INT ...)))) or it |
3536 | could look like (MEM (MEM (REG))). */ | |
d0de818d | 3537 | |
3538 | code = N_PSYM; | |
3539 | letter = 'v'; | |
3540 | eff_type = TREE_TYPE (parms); | |
3541 | ||
3542 | if (!REG_P (XEXP (XEXP (DECL_RTL (parms), 0), 0))) | |
3543 | number = INTVAL (XEXP (XEXP (XEXP (DECL_RTL (parms), 0), 0), 1)); | |
eed9d2f3 | 3544 | else |
d0de818d | 3545 | number = 0; |
3546 | ||
3547 | number = DEBUGGER_ARG_OFFSET (number, | |
3548 | XEXP (XEXP (DECL_RTL (parms), 0), 0)); | |
8c03ddcf | 3549 | } |
e16ceb8e | 3550 | else if (MEM_P (DECL_RTL (parms)) |
4394fe52 | 3551 | && XEXP (DECL_RTL (parms), 0) != const0_rtx |
3552 | /* ??? A constant address for a parm can happen | |
3553 | when the reg it lives in is equiv to a constant in memory. | |
3554 | Should make this not happen, after 2.4. */ | |
3555 | && ! CONSTANT_P (XEXP (DECL_RTL (parms), 0))) | |
946754ae | 3556 | { |
3557 | /* Parm was passed in registers but lives on the stack. */ | |
3558 | ||
d0de818d | 3559 | code = N_PSYM; |
3560 | letter = 'p'; | |
3561 | eff_type = TREE_TYPE (parms); | |
3562 | ||
946754ae | 3563 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), |
3564 | in which case we want the value of that CONST_INT, | |
8c03ddcf | 3565 | or (MEM (REG ...)), |
946754ae | 3566 | in which case we use a value of zero. */ |
d0de818d | 3567 | if (!REG_P (XEXP (DECL_RTL (parms), 0))) |
3568 | number = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
946754ae | 3569 | else |
d0de818d | 3570 | number = 0; |
946754ae | 3571 | |
c9452941 | 3572 | /* Make a big endian correction if the mode of the type of the |
3573 | parameter is not the same as the mode of the rtl. */ | |
3574 | if (BYTES_BIG_ENDIAN | |
3575 | && TYPE_MODE (TREE_TYPE (parms)) != GET_MODE (DECL_RTL (parms)) | |
3576 | && GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms))) < UNITS_PER_WORD) | |
d0de818d | 3577 | number += (GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))) |
3578 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms)))); | |
3579 | } | |
3580 | else | |
3581 | /* ??? We don't know how to represent this argument. */ | |
3582 | continue; | |
946754ae | 3583 | |
d0de818d | 3584 | dbxout_begin_complex_stabs (); |
48e1416a | 3585 | |
d0de818d | 3586 | if (DECL_NAME (parms)) |
3587 | { | |
3588 | stabstr_I (DECL_NAME (parms)); | |
3589 | stabstr_C (':'); | |
946754ae | 3590 | } |
d0de818d | 3591 | else |
3592 | stabstr_S ("(anon):"); | |
3593 | stabstr_C (letter); | |
3594 | dbxout_type (eff_type, 0); | |
3595 | dbxout_finish_complex_stabs (parms, code, 0, 0, number); | |
946754ae | 3596 | } |
262444a6 | 3597 | DBXOUT_DECR_NESTING; |
946754ae | 3598 | } |
3599 | ||
3600 | /* Output definitions for the places where parms live during the function, | |
3601 | when different from where they were passed, when the parms were passed | |
3602 | in memory. | |
3603 | ||
3604 | It is not useful to do this for parms passed in registers | |
3605 | that live during the function in different registers, because it is | |
3606 | impossible to look in the passed register for the passed value, | |
3607 | so we use the within-the-function register to begin with. | |
3608 | ||
3609 | PARMS is a chain of PARM_DECL nodes. */ | |
3610 | ||
439c05a0 | 3611 | void |
8ec3a57b | 3612 | dbxout_reg_parms (tree parms) |
946754ae | 3613 | { |
262444a6 | 3614 | ++debug_nesting; |
3615 | ||
1767a056 | 3616 | for (; parms; parms = DECL_CHAIN (parms)) |
ae399944 | 3617 | if (DECL_NAME (parms) && PARM_PASSED_IN_MEMORY (parms)) |
946754ae | 3618 | { |
946754ae | 3619 | /* Report parms that live in registers during the function |
3620 | but were passed in memory. */ | |
8ad4c111 | 3621 | if (REG_P (DECL_RTL (parms)) |
ae399944 | 3622 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
3c5d2a1c | 3623 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3624 | 0, DECL_RTL (parms)); | |
ae399944 | 3625 | else if (GET_CODE (DECL_RTL (parms)) == CONCAT) |
3c5d2a1c | 3626 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3627 | 0, DECL_RTL (parms)); | |
946754ae | 3628 | /* Report parms that live in memory but not where they were passed. */ |
e16ceb8e | 3629 | else if (MEM_P (DECL_RTL (parms)) |
946754ae | 3630 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) |
ae399944 | 3631 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3632 | 0, DECL_RTL (parms)); | |
946754ae | 3633 | } |
262444a6 | 3634 | DBXOUT_DECR_NESTING; |
946754ae | 3635 | } |
3636 | \f | |
3637 | /* Given a chain of ..._TYPE nodes (as come in a parameter list), | |
3638 | output definitions of those names, in raw form */ | |
3639 | ||
b29760a8 | 3640 | static void |
8ec3a57b | 3641 | dbxout_args (tree args) |
946754ae | 3642 | { |
3643 | while (args) | |
3644 | { | |
d0de818d | 3645 | stabstr_C (','); |
9aa97f08 | 3646 | dbxout_type (TREE_VALUE (args), 0); |
946754ae | 3647 | args = TREE_CHAIN (args); |
3648 | } | |
3649 | } | |
3650 | \f | |
4ceb34b9 | 3651 | #if defined (DBX_DEBUGGING_INFO) |
3652 | ||
7850c77b | 3653 | /* Subroutine of dbxout_block. Emit an N_LBRAC stab referencing LABEL. |
3654 | BEGIN_LABEL is the name of the beginning of the function, which may | |
3655 | be required. */ | |
3656 | static void | |
3657 | dbx_output_lbrac (const char *label, | |
3658 | const char *begin_label ATTRIBUTE_UNUSED) | |
3659 | { | |
d0de818d | 3660 | dbxout_begin_stabn (N_LBRAC); |
e3b8b697 | 3661 | if (DBX_BLOCKS_FUNCTION_RELATIVE) |
d0de818d | 3662 | dbxout_stab_value_label_diff (label, begin_label); |
3663 | else | |
3664 | dbxout_stab_value_label (label); | |
7850c77b | 3665 | } |
3666 | ||
3667 | /* Subroutine of dbxout_block. Emit an N_RBRAC stab referencing LABEL. | |
3668 | BEGIN_LABEL is the name of the beginning of the function, which may | |
3669 | be required. */ | |
3670 | static void | |
3671 | dbx_output_rbrac (const char *label, | |
3672 | const char *begin_label ATTRIBUTE_UNUSED) | |
3673 | { | |
d0de818d | 3674 | dbxout_begin_stabn (N_RBRAC); |
e3b8b697 | 3675 | if (DBX_BLOCKS_FUNCTION_RELATIVE) |
d0de818d | 3676 | dbxout_stab_value_label_diff (label, begin_label); |
3677 | else | |
3678 | dbxout_stab_value_label (label); | |
7850c77b | 3679 | } |
3680 | ||
946754ae | 3681 | /* Output everything about a symbol block (a BLOCK node |
3682 | that represents a scope level), | |
3683 | including recursive output of contained blocks. | |
3684 | ||
3685 | BLOCK is the BLOCK node. | |
3686 | DEPTH is its depth within containing symbol blocks. | |
3687 | ARGS is usually zero; but for the outermost block of the | |
3688 | body of a function, it is a chain of PARM_DECLs for the function parameters. | |
3689 | We output definitions of all the register parms | |
3690 | as if they were local variables of that block. | |
3691 | ||
3692 | If -g1 was used, we count blocks just the same, but output nothing | |
3693 | except for the outermost block. | |
3694 | ||
3695 | Actually, BLOCK may be several blocks chained together. | |
3696 | We handle them all in sequence. */ | |
3697 | ||
3698 | static void | |
8ec3a57b | 3699 | dbxout_block (tree block, int depth, tree args) |
946754ae | 3700 | { |
a6e8892a | 3701 | char begin_label[20]; |
3702 | /* Reference current function start using LFBB. */ | |
3703 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); | |
946754ae | 3704 | |
3705 | while (block) | |
3706 | { | |
3707 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
b26d0c9e | 3708 | if (TREE_USED (block) && TREE_ASM_WRITTEN (block)) |
946754ae | 3709 | { |
a1d829f8 | 3710 | int did_output; |
7850c77b | 3711 | int blocknum = BLOCK_NUMBER (block); |
a1d829f8 | 3712 | |
d0309f39 | 3713 | /* In dbx format, the syms of a block come before the N_LBRAC. |
6312a35e | 3714 | If nothing is output, we don't need the N_LBRAC, either. */ |
a1d829f8 | 3715 | did_output = 0; |
946754ae | 3716 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) |
a1d829f8 | 3717 | did_output = dbxout_syms (BLOCK_VARS (block)); |
946754ae | 3718 | if (args) |
3719 | dbxout_reg_parms (args); | |
946754ae | 3720 | |
3721 | /* Now output an N_LBRAC symbol to represent the beginning of | |
3722 | the block. Use the block's tree-walk order to generate | |
3723 | the assembler symbols LBBn and LBEn | |
3724 | that final will define around the code in this block. */ | |
7850c77b | 3725 | if (did_output) |
946754ae | 3726 | { |
3727 | char buf[20]; | |
7850c77b | 3728 | const char *scope_start; |
3729 | ||
3730 | if (depth == 0) | |
3731 | /* The outermost block doesn't get LBB labels; use | |
a6e8892a | 3732 | the LFBB local symbol emitted by dbxout_begin_prologue. */ |
7850c77b | 3733 | scope_start = begin_label; |
3734 | else | |
3735 | { | |
3736 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum); | |
3737 | scope_start = buf; | |
3738 | } | |
946754ae | 3739 | |
7850c77b | 3740 | dbx_output_lbrac (scope_start, begin_label); |
946754ae | 3741 | } |
946754ae | 3742 | |
946754ae | 3743 | /* Output the subblocks. */ |
4303221c | 3744 | dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
946754ae | 3745 | |
3746 | /* Refer to the marker for the end of the block. */ | |
7850c77b | 3747 | if (did_output) |
946754ae | 3748 | { |
7850c77b | 3749 | char buf[100]; |
3750 | if (depth == 0) | |
3751 | /* The outermost block doesn't get LBE labels; | |
3752 | use the "scope" label which will be emitted | |
3753 | by dbxout_function_end. */ | |
3754 | ASM_GENERATE_INTERNAL_LABEL (buf, "Lscope", scope_labelno); | |
3755 | else | |
3756 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum); | |
3757 | ||
3758 | dbx_output_rbrac (buf, begin_label); | |
946754ae | 3759 | } |
3760 | } | |
3761 | block = BLOCK_CHAIN (block); | |
3762 | } | |
3763 | } | |
3764 | ||
3765 | /* Output the information about a function and its arguments and result. | |
3766 | Usually this follows the function's code, | |
3767 | but on some systems, it comes before. */ | |
3768 | ||
3769 | static void | |
8ec3a57b | 3770 | dbxout_begin_function (tree decl) |
946754ae | 3771 | { |
475c9f56 | 3772 | int saved_tree_used1; |
3773 | ||
475c9f56 | 3774 | saved_tree_used1 = TREE_USED (decl); |
262444a6 | 3775 | TREE_USED (decl) = 1; |
3776 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
3777 | { | |
8ec3a57b | 3778 | int saved_tree_used2 = TREE_USED (DECL_RESULT (decl)); |
262444a6 | 3779 | TREE_USED (DECL_RESULT (decl)) = 1; |
3780 | dbxout_symbol (decl, 0); | |
3781 | TREE_USED (DECL_RESULT (decl)) = saved_tree_used2; | |
3782 | } | |
3783 | else | |
3784 | dbxout_symbol (decl, 0); | |
3785 | TREE_USED (decl) = saved_tree_used1; | |
3786 | ||
946754ae | 3787 | dbxout_parms (DECL_ARGUMENTS (decl)); |
3788 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
3789 | dbxout_symbol (DECL_RESULT (decl), 1); | |
3790 | } | |
0c87a39e | 3791 | #endif /* DBX_DEBUGGING_INFO */ |
946754ae | 3792 | |
02da6382 | 3793 | #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */ |
573aba85 | 3794 | |
b5369b7d | 3795 | /* Record an element in the table of global destructors. SYMBOL is |
3796 | a SYMBOL_REF of the function to be called; PRIORITY is a number | |
3797 | between 0 and MAX_INIT_PRIORITY. */ | |
3798 | ||
3799 | void | |
3800 | default_stabs_asm_out_destructor (rtx symbol ATTRIBUTE_UNUSED, | |
3801 | int priority ATTRIBUTE_UNUSED) | |
3802 | { | |
3803 | #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO | |
3804 | /* Tell GNU LD that this is part of the static destructor set. | |
3805 | This will work for any system that uses stabs, most usefully | |
3806 | aout systems. */ | |
3807 | dbxout_begin_simple_stabs ("___DTOR_LIST__", 22 /* N_SETT */); | |
3808 | dbxout_stab_value_label (XSTR (symbol, 0)); | |
3809 | #else | |
3810 | sorry ("global destructors not supported on this target"); | |
3811 | #endif | |
3812 | } | |
3813 | ||
3814 | /* Likewise for global constructors. */ | |
3815 | ||
3816 | void | |
3817 | default_stabs_asm_out_constructor (rtx symbol ATTRIBUTE_UNUSED, | |
3818 | int priority ATTRIBUTE_UNUSED) | |
3819 | { | |
3820 | #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO | |
3821 | /* Tell GNU LD that this is part of the static destructor set. | |
3822 | This will work for any system that uses stabs, most usefully | |
3823 | aout systems. */ | |
3824 | dbxout_begin_simple_stabs ("___CTOR_LIST__", 22 /* N_SETT */); | |
3825 | dbxout_stab_value_label (XSTR (symbol, 0)); | |
3826 | #else | |
3827 | sorry ("global constructors not supported on this target"); | |
3828 | #endif | |
3829 | } | |
3830 | ||
573aba85 | 3831 | #include "gt-dbxout.h" |