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946754ae | 1 | /* Output dbx-format symbol table information from GNU compiler. |
f1717362 | 2 | Copyright (C) 1987-2016 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" | |
7c29e30e | 74 | #include "rtl.h" |
946754ae | 75 | #include "tree.h" |
7c29e30e | 76 | #include "tm_p.h" |
77 | #include "stringpool.h" | |
7c29e30e | 78 | #include "insn-config.h" |
7c29e30e | 79 | #include "emit-rtl.h" |
80 | #include "cgraph.h" | |
81 | #include "diagnostic-core.h" | |
b20a8bb4 | 82 | #include "fold-const.h" |
9ed99284 | 83 | #include "varasm.h" |
84 | #include "stor-layout.h" | |
946754ae | 85 | #include "reload.h" |
e3b8b697 | 86 | #include "output.h" |
744d3441 | 87 | #include "dbxout.h" |
0e93a6ac | 88 | #include "toplev.h" |
b896d81b | 89 | #include "debug.h" |
218e3e4e | 90 | #include "common/common-target.h" |
d19bd1f0 | 91 | #include "langhooks.h" |
50a7abc5 | 92 | #include "expr.h" |
946754ae | 93 | |
439c05a0 | 94 | #ifdef XCOFF_DEBUGGING_INFO |
3d82b777 | 95 | #include "xcoffout.h" |
439c05a0 | 96 | #endif |
97 | ||
946754ae | 98 | #ifndef ASM_STABS_OP |
d0de818d | 99 | # ifdef XCOFF_DEBUGGING_INFO |
100 | # define ASM_STABS_OP "\t.stabx\t" | |
101 | # else | |
102 | # define ASM_STABS_OP "\t.stabs\t" | |
103 | # endif | |
946754ae | 104 | #endif |
105 | ||
106 | #ifndef ASM_STABN_OP | |
6ae8577b | 107 | #define ASM_STABN_OP "\t.stabn\t" |
946754ae | 108 | #endif |
109 | ||
d0de818d | 110 | #ifndef ASM_STABD_OP |
111 | #define ASM_STABD_OP "\t.stabd\t" | |
112 | #endif | |
113 | ||
98123cec | 114 | #ifndef DBX_TYPE_DECL_STABS_CODE |
115 | #define DBX_TYPE_DECL_STABS_CODE N_LSYM | |
439c05a0 | 116 | #endif |
117 | ||
118 | #ifndef DBX_STATIC_CONST_VAR_CODE | |
119 | #define DBX_STATIC_CONST_VAR_CODE N_FUN | |
120 | #endif | |
121 | ||
122 | #ifndef DBX_REGPARM_STABS_CODE | |
123 | #define DBX_REGPARM_STABS_CODE N_RSYM | |
124 | #endif | |
125 | ||
126 | #ifndef DBX_REGPARM_STABS_LETTER | |
127 | #define DBX_REGPARM_STABS_LETTER 'P' | |
128 | #endif | |
129 | ||
a3407969 | 130 | #ifndef NO_DBX_FUNCTION_END |
131 | #define NO_DBX_FUNCTION_END 0 | |
132 | #endif | |
133 | ||
7d6171f2 | 134 | #ifndef NO_DBX_BNSYM_ENSYM |
135 | #define NO_DBX_BNSYM_ENSYM 0 | |
136 | #endif | |
137 | ||
d0de818d | 138 | #ifndef NO_DBX_MAIN_SOURCE_DIRECTORY |
139 | #define NO_DBX_MAIN_SOURCE_DIRECTORY 0 | |
140 | #endif | |
141 | ||
e3b8b697 | 142 | #ifndef DBX_BLOCKS_FUNCTION_RELATIVE |
143 | #define DBX_BLOCKS_FUNCTION_RELATIVE 0 | |
144 | #endif | |
145 | ||
146 | #ifndef DBX_LINES_FUNCTION_RELATIVE | |
147 | #define DBX_LINES_FUNCTION_RELATIVE 0 | |
148 | #endif | |
149 | ||
d0de818d | 150 | #ifndef DBX_CONTIN_LENGTH |
151 | #define DBX_CONTIN_LENGTH 80 | |
152 | #endif | |
153 | ||
154 | #ifndef DBX_CONTIN_CHAR | |
155 | #define DBX_CONTIN_CHAR '\\' | |
156 | #endif | |
157 | ||
946754ae | 158 | enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED}; |
159 | ||
54ae7e56 | 160 | /* Structure recording information about a C data type. |
161 | The status element says whether we have yet output | |
162 | the definition of the type. TYPE_XREF says we have | |
163 | output it as a cross-reference only. | |
164 | The file_number and type_number elements are used if DBX_USE_BINCL | |
165 | is defined. */ | |
166 | ||
fb1e4f4a | 167 | struct GTY(()) typeinfo { |
54ae7e56 | 168 | enum typestatus status; |
54ae7e56 | 169 | int file_number; |
170 | int type_number; | |
54ae7e56 | 171 | }; |
172 | ||
173 | /* Vector recording information about C data types. | |
946754ae | 174 | When we first notice a data type (a tree node), |
175 | we assign it a number using next_type_number. | |
54ae7e56 | 176 | That is its index in this vector. */ |
946754ae | 177 | |
573aba85 | 178 | static GTY ((length ("typevec_len"))) struct typeinfo *typevec; |
946754ae | 179 | |
180 | /* Number of elements of space allocated in `typevec'. */ | |
181 | ||
573aba85 | 182 | static GTY(()) int typevec_len; |
946754ae | 183 | |
184 | /* In dbx output, each type gets a unique number. | |
185 | This is the number for the next type output. | |
186 | The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */ | |
187 | ||
573aba85 | 188 | static GTY(()) int next_type_number; |
54ae7e56 | 189 | |
73ae3ef7 | 190 | /* The C front end may call dbxout_symbol before dbxout_init runs. |
191 | We save all such decls in this list and output them when we get | |
192 | to dbxout_init. */ | |
193 | ||
194 | static GTY(()) tree preinit_symbols; | |
195 | ||
51cec339 | 196 | enum binclstatus {BINCL_NOT_REQUIRED, BINCL_PENDING, BINCL_PROCESSED}; |
197 | ||
54ae7e56 | 198 | /* When using N_BINCL in dbx output, each type number is actually a |
199 | pair of the file number and the type number within the file. | |
200 | This is a stack of input files. */ | |
201 | ||
65f52f4e | 202 | struct dbx_file |
54ae7e56 | 203 | { |
204 | struct dbx_file *next; | |
205 | int file_number; | |
206 | int next_type_number; | |
65f52f4e | 207 | enum binclstatus bincl_status; /* Keep track of lazy bincl. */ |
208 | const char *pending_bincl_name; /* Name of bincl. */ | |
209 | struct dbx_file *prev; /* Chain to traverse all pending bincls. */ | |
54ae7e56 | 210 | }; |
211 | ||
48e1416a | 212 | /* This is the top of the stack. |
213 | ||
65f52f4e | 214 | This is not saved for PCH, because restoring a PCH should not change it. |
215 | next_file_number does have to be saved, because the PCH may use some | |
216 | file numbers; however, just before restoring a PCH, next_file_number | |
217 | should always be 0 because we should not have needed any file numbers | |
218 | yet. */ | |
54ae7e56 | 219 | |
7bff8f28 | 220 | #if (defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)) \ |
221 | && defined (DBX_USE_BINCL) | |
65f52f4e | 222 | static struct dbx_file *current_file; |
14f1f66f | 223 | #endif |
54ae7e56 | 224 | |
225 | /* This is the next file number to use. */ | |
226 | ||
573aba85 | 227 | static GTY(()) int next_file_number; |
228 | ||
cf8e41a4 | 229 | /* A counter for dbxout_function_end. */ |
38ac91bf | 230 | |
cf8e41a4 | 231 | static GTY(()) int scope_labelno; |
38ac91bf | 232 | |
b1bd5ac9 | 233 | /* A counter for dbxout_source_line. */ |
234 | ||
235 | static GTY(()) int dbxout_source_line_counter; | |
236 | ||
573aba85 | 237 | /* Number for the next N_SOL filename stabs label. The number 0 is reserved |
238 | for the N_SO filename stabs label. */ | |
239 | ||
cf8e41a4 | 240 | static GTY(()) int source_label_number = 1; |
241 | ||
242 | /* Last source file name mentioned in a NOTE insn. */ | |
243 | ||
244 | static GTY(()) const char *lastfile; | |
245 | ||
246 | /* Used by PCH machinery to detect if 'lastfile' should be reset to | |
247 | base_input_file. */ | |
248 | static GTY(()) int lastfile_is_base; | |
249 | ||
250 | /* Typical USG systems don't have stab.h, and they also have | |
251 | no use for DBX-format debugging info. */ | |
252 | ||
253 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) | |
254 | ||
241af3cc | 255 | #ifdef DBX_USE_BINCL |
256 | /* If zero then there is no pending BINCL. */ | |
257 | static int pending_bincls = 0; | |
258 | #endif | |
259 | ||
cf8e41a4 | 260 | /* The original input file name. */ |
261 | static const char *base_input_file; | |
262 | ||
573aba85 | 263 | #ifdef DEBUG_SYMS_TEXT |
2f14b1f9 | 264 | #define FORCE_TEXT switch_to_section (current_function_section ()) |
573aba85 | 265 | #else |
266 | #define FORCE_TEXT | |
267 | #endif | |
268 | ||
269 | #include "gstab.h" | |
270 | ||
573aba85 | 271 | /* 1 if PARM is passed to this function in memory. */ |
272 | ||
273 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
e16ceb8e | 274 | (MEM_P (DECL_INCOMING_RTL (PARM))) |
54ae7e56 | 275 | |
573aba85 | 276 | /* A C expression for the integer offset value of an automatic variable |
277 | (N_LSYM) having address X (an RTX). */ | |
278 | #ifndef DEBUGGER_AUTO_OFFSET | |
279 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
280 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
281 | #endif | |
282 | ||
283 | /* A C expression for the integer offset value of an argument (N_PSYM) | |
7739e598 | 284 | having address X (an RTX). The nominal offset is OFFSET. |
285 | Note that we use OFFSET + 0 here to avoid the self-assign warning | |
286 | when the macro is called in a context like | |
287 | number = DEBUGGER_ARG_OFFSET(number, X) */ | |
573aba85 | 288 | #ifndef DEBUGGER_ARG_OFFSET |
7739e598 | 289 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET + 0) |
573aba85 | 290 | #endif |
291 | ||
d0de818d | 292 | /* This obstack holds the stab string currently being constructed. We |
293 | build it up here, then write it out, so we can split long lines up | |
294 | properly (see dbxout_finish_complex_stabs). */ | |
295 | static struct obstack stabstr_ob; | |
296 | static size_t stabstr_last_contin_point; | |
946754ae | 297 | |
b0eb97d5 | 298 | #ifdef DBX_USE_BINCL |
51cec339 | 299 | static void emit_bincl_stab (const char *c); |
300 | static void emit_pending_bincls (void); | |
2a3d2f63 | 301 | #endif |
51cec339 | 302 | static inline void emit_pending_bincls_if_required (void); |
303 | ||
8ec3a57b | 304 | static void dbxout_init (const char *); |
48e1416a | 305 | |
8ec3a57b | 306 | static void dbxout_finish (const char *); |
307 | static void dbxout_start_source_file (unsigned, const char *); | |
308 | static void dbxout_end_source_file (unsigned); | |
309 | static void dbxout_typedefs (tree); | |
8ec3a57b | 310 | static void dbxout_type_index (tree); |
8ec3a57b | 311 | static void dbxout_args (tree); |
312 | static void dbxout_type_fields (tree); | |
d0de818d | 313 | static void dbxout_type_method_1 (tree); |
8ec3a57b | 314 | static void dbxout_type_methods (tree); |
a9538d68 | 315 | static void dbxout_range_type (tree, tree, tree); |
8ec3a57b | 316 | static void dbxout_type (tree, int); |
a9538d68 | 317 | static bool print_int_cst_bounds_in_octal_p (tree, tree, tree); |
a12691f0 | 318 | static bool is_fortran (void); |
8ec3a57b | 319 | static void dbxout_type_name (tree); |
320 | static void dbxout_class_name_qualifiers (tree); | |
321 | static int dbxout_symbol_location (tree, tree, const char *, rtx); | |
322 | static void dbxout_symbol_name (tree, const char *, int); | |
c1e61953 | 323 | static void dbxout_common_name (tree, const char *, stab_code_type); |
a12691f0 | 324 | static const char *dbxout_common_check (tree, int *); |
3a1c9df2 | 325 | static void dbxout_early_global_decl (tree); |
326 | static void dbxout_late_global_decl (tree); | |
fdcda623 | 327 | static void dbxout_type_decl (tree, int); |
8ec3a57b | 328 | static void dbxout_handle_pch (unsigned); |
00e3fe44 | 329 | static void debug_free_queue (void); |
946754ae | 330 | \f |
c140b944 | 331 | /* The debug hooks structure. */ |
1dff614c | 332 | #if defined (DBX_DEBUGGING_INFO) |
333 | ||
1488fe24 | 334 | static void dbxout_source_line (unsigned int, const char *, int, bool); |
4ec92916 | 335 | static void dbxout_begin_prologue (unsigned int, const char *); |
d0de818d | 336 | static void dbxout_source_file (const char *); |
475c9f56 | 337 | static void dbxout_function_end (tree); |
8ec3a57b | 338 | static void dbxout_begin_function (tree); |
339 | static void dbxout_begin_block (unsigned, unsigned); | |
340 | static void dbxout_end_block (unsigned, unsigned); | |
341 | static void dbxout_function_decl (tree); | |
1dff614c | 342 | |
e42f6423 | 343 | const struct gcc_debug_hooks dbx_debug_hooks = |
b896d81b | 344 | { |
345 | dbxout_init, | |
c140b944 | 346 | dbxout_finish, |
47306a5d | 347 | debug_nothing_void, |
3a1c9df2 | 348 | debug_nothing_void, |
c140b944 | 349 | debug_nothing_int_charstar, |
350 | debug_nothing_int_charstar, | |
351 | dbxout_start_source_file, | |
1dff614c | 352 | dbxout_end_source_file, |
353 | dbxout_begin_block, | |
b9b7f8b4 | 354 | dbxout_end_block, |
5493cb9a | 355 | debug_true_const_tree, /* ignore_block */ |
2b49746a | 356 | dbxout_source_line, /* source_line */ |
4ec92916 | 357 | dbxout_begin_prologue, /* begin_prologue */ |
2b49746a | 358 | debug_nothing_int_charstar, /* end_prologue */ |
cfe7b52e | 359 | debug_nothing_int_charstar, /* begin_epilogue */ |
2b49746a | 360 | debug_nothing_int_charstar, /* end_epilogue */ |
f76df888 | 361 | #ifdef DBX_FUNCTION_FIRST |
362 | dbxout_begin_function, | |
363 | #else | |
2b49746a | 364 | debug_nothing_tree, /* begin_function */ |
f76df888 | 365 | #endif |
2b49746a | 366 | debug_nothing_int, /* end_function */ |
f2023823 | 367 | debug_nothing_tree, /* register_main_translation_unit */ |
c37d72e9 | 368 | dbxout_function_decl, |
3a1c9df2 | 369 | dbxout_early_global_decl, /* early_global_decl */ |
370 | dbxout_late_global_decl, /* late_global_decl */ | |
73ae3ef7 | 371 | dbxout_type_decl, /* type_decl */ |
df4d540f | 372 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
2b49746a | 373 | debug_nothing_tree, /* deferred_inline_function */ |
374 | debug_nothing_tree, /* outlining_inline_function */ | |
3352ba19 | 375 | debug_nothing_rtx_code_label, /* label */ |
5923a5e7 | 376 | dbxout_handle_pch, /* handle_pch */ |
3352ba19 | 377 | debug_nothing_rtx_insn, /* var_location */ |
b20f41dd | 378 | debug_nothing_tree, /* size_function */ |
1897b881 | 379 | debug_nothing_void, /* switch_text_section */ |
8d17cbdd | 380 | debug_nothing_tree_tree, /* set_name */ |
929d2a90 | 381 | 0, /* start_end_main_source_file */ |
382 | TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */ | |
b896d81b | 383 | }; |
1dff614c | 384 | #endif /* DBX_DEBUGGING_INFO */ |
385 | ||
386 | #if defined (XCOFF_DEBUGGING_INFO) | |
e42f6423 | 387 | const struct gcc_debug_hooks xcoff_debug_hooks = |
1dff614c | 388 | { |
389 | dbxout_init, | |
390 | dbxout_finish, | |
47306a5d | 391 | debug_nothing_void, |
3a1c9df2 | 392 | debug_nothing_void, |
1dff614c | 393 | debug_nothing_int_charstar, |
394 | debug_nothing_int_charstar, | |
395 | dbxout_start_source_file, | |
396 | dbxout_end_source_file, | |
397 | xcoffout_begin_block, | |
b9b7f8b4 | 398 | xcoffout_end_block, |
5493cb9a | 399 | debug_true_const_tree, /* ignore_block */ |
b9b7f8b4 | 400 | xcoffout_source_line, |
2b49746a | 401 | xcoffout_begin_prologue, /* begin_prologue */ |
402 | debug_nothing_int_charstar, /* end_prologue */ | |
cfe7b52e | 403 | debug_nothing_int_charstar, /* begin_epilogue */ |
b9b7f8b4 | 404 | xcoffout_end_epilogue, |
2b49746a | 405 | debug_nothing_tree, /* begin_function */ |
c37d72e9 | 406 | xcoffout_end_function, |
0eaf0c44 | 407 | debug_nothing_tree, /* register_main_translation_unit */ |
2b49746a | 408 | debug_nothing_tree, /* function_decl */ |
3a1c9df2 | 409 | dbxout_early_global_decl, /* early_global_decl */ |
410 | dbxout_late_global_decl, /* late_global_decl */ | |
73ae3ef7 | 411 | dbxout_type_decl, /* type_decl */ |
df4d540f | 412 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
2b49746a | 413 | debug_nothing_tree, /* deferred_inline_function */ |
414 | debug_nothing_tree, /* outlining_inline_function */ | |
3352ba19 | 415 | debug_nothing_rtx_code_label, /* label */ |
5923a5e7 | 416 | dbxout_handle_pch, /* handle_pch */ |
3352ba19 | 417 | debug_nothing_rtx_insn, /* var_location */ |
b20f41dd | 418 | debug_nothing_tree, /* size_function */ |
1897b881 | 419 | debug_nothing_void, /* switch_text_section */ |
9207eb25 | 420 | debug_nothing_tree_tree, /* set_name */ |
929d2a90 | 421 | 0, /* start_end_main_source_file */ |
422 | TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */ | |
1dff614c | 423 | }; |
424 | #endif /* XCOFF_DEBUGGING_INFO */ | |
b896d81b | 425 | \f |
d0de818d | 426 | /* Numeric formatting helper macro. Note that this does not handle |
427 | hexadecimal. */ | |
428 | #define NUMBER_FMT_LOOP(P, NUM, BASE) \ | |
429 | do \ | |
430 | { \ | |
431 | int digit = NUM % BASE; \ | |
432 | NUM /= BASE; \ | |
433 | *--P = digit + '0'; \ | |
434 | } \ | |
435 | while (NUM > 0) | |
436 | ||
437 | /* Utility: write a decimal integer NUM to asm_out_file. */ | |
438 | void | |
439 | dbxout_int (int num) | |
440 | { | |
441 | char buf[64]; | |
442 | char *p = buf + sizeof buf; | |
443 | unsigned int unum; | |
444 | ||
445 | if (num == 0) | |
446 | { | |
447 | putc ('0', asm_out_file); | |
448 | return; | |
449 | } | |
450 | if (num < 0) | |
451 | { | |
452 | putc ('-', asm_out_file); | |
453 | unum = -num; | |
454 | } | |
455 | else | |
456 | unum = num; | |
457 | ||
458 | NUMBER_FMT_LOOP (p, unum, 10); | |
459 | ||
460 | while (p < buf + sizeof buf) | |
461 | { | |
462 | putc (*p, asm_out_file); | |
463 | p++; | |
464 | } | |
465 | } | |
466 | ||
467 | \f | |
468 | /* Primitives for emitting simple stabs directives. All other stabs | |
469 | routines should use these functions instead of directly emitting | |
470 | stabs. They are exported because machine-dependent code may need | |
471 | to invoke them, e.g. in a DBX_OUTPUT_* macro whose definition | |
472 | forwards to code in CPU.c. */ | |
473 | ||
474 | /* The following functions should all be called immediately after one | |
475 | of the dbxout_begin_stab* functions (below). They write out | |
476 | various things as the value of a stab. */ | |
477 | ||
478 | /* Write out a literal zero as the value of a stab. */ | |
479 | void | |
480 | dbxout_stab_value_zero (void) | |
481 | { | |
482 | fputs ("0\n", asm_out_file); | |
483 | } | |
484 | ||
485 | /* Write out the label LABEL as the value of a stab. */ | |
486 | void | |
487 | dbxout_stab_value_label (const char *label) | |
488 | { | |
489 | assemble_name (asm_out_file, label); | |
490 | putc ('\n', asm_out_file); | |
491 | } | |
492 | ||
493 | /* Write out the difference of two labels, LABEL - BASE, as the value | |
494 | of a stab. */ | |
495 | void | |
496 | dbxout_stab_value_label_diff (const char *label, const char *base) | |
497 | { | |
498 | assemble_name (asm_out_file, label); | |
499 | putc ('-', asm_out_file); | |
500 | assemble_name (asm_out_file, base); | |
501 | putc ('\n', asm_out_file); | |
502 | } | |
503 | ||
504 | /* Write out an internal label as the value of a stab, and immediately | |
505 | emit that internal label. This should be used only when | |
506 | dbxout_stabd will not work. STEM is the name stem of the label, | |
507 | COUNTERP is a pointer to a counter variable which will be used to | |
508 | guarantee label uniqueness. */ | |
509 | void | |
510 | dbxout_stab_value_internal_label (const char *stem, int *counterp) | |
511 | { | |
512 | char label[100]; | |
513 | int counter = counterp ? (*counterp)++ : 0; | |
514 | ||
515 | ASM_GENERATE_INTERNAL_LABEL (label, stem, counter); | |
516 | dbxout_stab_value_label (label); | |
517 | targetm.asm_out.internal_label (asm_out_file, stem, counter); | |
518 | } | |
519 | ||
520 | /* Write out the difference between BASE and an internal label as the | |
521 | value of a stab, and immediately emit that internal label. STEM and | |
522 | COUNTERP are as for dbxout_stab_value_internal_label. */ | |
523 | void | |
524 | dbxout_stab_value_internal_label_diff (const char *stem, int *counterp, | |
525 | const char *base) | |
526 | { | |
527 | char label[100]; | |
528 | int counter = counterp ? (*counterp)++ : 0; | |
529 | ||
530 | ASM_GENERATE_INTERNAL_LABEL (label, stem, counter); | |
531 | dbxout_stab_value_label_diff (label, base); | |
532 | targetm.asm_out.internal_label (asm_out_file, stem, counter); | |
533 | } | |
534 | ||
535 | /* The following functions produce specific kinds of stab directives. */ | |
536 | ||
537 | /* Write a .stabd directive with type STYPE and desc SDESC to asm_out_file. */ | |
538 | void | |
539 | dbxout_stabd (int stype, int sdesc) | |
540 | { | |
541 | fputs (ASM_STABD_OP, asm_out_file); | |
542 | dbxout_int (stype); | |
543 | fputs (",0,", asm_out_file); | |
544 | dbxout_int (sdesc); | |
545 | putc ('\n', asm_out_file); | |
546 | } | |
547 | ||
548 | /* Write a .stabn directive with type STYPE. This function stops | |
549 | short of emitting the value field, which is the responsibility of | |
550 | the caller (normally it will be either a symbol or the difference | |
551 | of two symbols). */ | |
552 | ||
553 | void | |
554 | dbxout_begin_stabn (int stype) | |
555 | { | |
556 | fputs (ASM_STABN_OP, asm_out_file); | |
557 | dbxout_int (stype); | |
558 | fputs (",0,0,", asm_out_file); | |
559 | } | |
560 | ||
561 | /* Write a .stabn directive with type N_SLINE and desc LINE. As above, | |
562 | the value field is the responsibility of the caller. */ | |
563 | void | |
564 | dbxout_begin_stabn_sline (int lineno) | |
565 | { | |
566 | fputs (ASM_STABN_OP, asm_out_file); | |
567 | dbxout_int (N_SLINE); | |
568 | fputs (",0,", asm_out_file); | |
569 | dbxout_int (lineno); | |
570 | putc (',', asm_out_file); | |
571 | } | |
572 | ||
573 | /* Begin a .stabs directive with string "", type STYPE, and desc and | |
574 | other fields 0. The value field is the responsibility of the | |
575 | caller. This function cannot be used for .stabx directives. */ | |
576 | void | |
577 | dbxout_begin_empty_stabs (int stype) | |
578 | { | |
579 | fputs (ASM_STABS_OP, asm_out_file); | |
580 | fputs ("\"\",", asm_out_file); | |
581 | dbxout_int (stype); | |
582 | fputs (",0,0,", asm_out_file); | |
583 | } | |
584 | ||
585 | /* Begin a .stabs directive with string STR, type STYPE, and desc 0. | |
586 | The value field is the responsibility of the caller. */ | |
587 | void | |
588 | dbxout_begin_simple_stabs (const char *str, int stype) | |
589 | { | |
590 | fputs (ASM_STABS_OP, asm_out_file); | |
591 | output_quoted_string (asm_out_file, str); | |
592 | putc (',', asm_out_file); | |
593 | dbxout_int (stype); | |
594 | fputs (",0,0,", asm_out_file); | |
595 | } | |
596 | ||
597 | /* As above but use SDESC for the desc field. */ | |
598 | void | |
599 | dbxout_begin_simple_stabs_desc (const char *str, int stype, int sdesc) | |
600 | { | |
601 | fputs (ASM_STABS_OP, asm_out_file); | |
602 | output_quoted_string (asm_out_file, str); | |
603 | putc (',', asm_out_file); | |
604 | dbxout_int (stype); | |
605 | fputs (",0,", asm_out_file); | |
606 | dbxout_int (sdesc); | |
607 | putc (',', asm_out_file); | |
608 | } | |
609 | ||
610 | /* The next set of functions are entirely concerned with production of | |
611 | "complex" .stabs directives: that is, .stabs directives whose | |
612 | strings have to be constructed piecemeal. dbxout_type, | |
613 | dbxout_symbol, etc. use these routines heavily. The string is queued | |
614 | up in an obstack, then written out by dbxout_finish_complex_stabs, which | |
615 | is also responsible for splitting it up if it exceeds DBX_CONTIN_LENGTH. | |
616 | (You might think it would be more efficient to go straight to stdio | |
617 | when DBX_CONTIN_LENGTH is 0 (i.e. no length limit) but that turns | |
618 | out not to be the case, and anyway this needs fewer #ifdefs.) */ | |
619 | ||
620 | /* Begin a complex .stabs directive. If we can, write the initial | |
621 | ASM_STABS_OP to the asm_out_file. */ | |
622 | ||
623 | static void | |
624 | dbxout_begin_complex_stabs (void) | |
625 | { | |
626 | emit_pending_bincls_if_required (); | |
627 | FORCE_TEXT; | |
628 | fputs (ASM_STABS_OP, asm_out_file); | |
629 | putc ('"', asm_out_file); | |
630 | gcc_assert (stabstr_last_contin_point == 0); | |
631 | } | |
632 | ||
8a2df6f8 | 633 | /* As above, but do not force text or emit pending bincls. This is |
634 | used by dbxout_symbol_location, which needs to do something else. */ | |
635 | static void | |
636 | dbxout_begin_complex_stabs_noforcetext (void) | |
637 | { | |
638 | fputs (ASM_STABS_OP, asm_out_file); | |
639 | putc ('"', asm_out_file); | |
640 | gcc_assert (stabstr_last_contin_point == 0); | |
641 | } | |
642 | ||
d0de818d | 643 | /* Add CHR, a single character, to the string being built. */ |
644 | #define stabstr_C(chr) obstack_1grow (&stabstr_ob, chr) | |
645 | ||
646 | /* Add STR, a normal C string, to the string being built. */ | |
9af5ce0c | 647 | #define stabstr_S(str) obstack_grow (&stabstr_ob, str, strlen (str)) |
d0de818d | 648 | |
649 | /* Add the text of ID, an IDENTIFIER_NODE, to the string being built. */ | |
650 | #define stabstr_I(id) obstack_grow (&stabstr_ob, \ | |
651 | IDENTIFIER_POINTER (id), \ | |
652 | IDENTIFIER_LENGTH (id)) | |
653 | ||
654 | /* Add NUM, a signed decimal number, to the string being built. */ | |
655 | static void | |
656 | stabstr_D (HOST_WIDE_INT num) | |
657 | { | |
658 | char buf[64]; | |
659 | char *p = buf + sizeof buf; | |
660 | unsigned int unum; | |
661 | ||
662 | if (num == 0) | |
663 | { | |
664 | stabstr_C ('0'); | |
665 | return; | |
666 | } | |
667 | if (num < 0) | |
668 | { | |
669 | stabstr_C ('-'); | |
670 | unum = -num; | |
671 | } | |
672 | else | |
673 | unum = num; | |
674 | ||
675 | NUMBER_FMT_LOOP (p, unum, 10); | |
676 | ||
677 | obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p); | |
678 | } | |
679 | ||
680 | /* Add NUM, an unsigned decimal number, to the string being built. */ | |
681 | static void | |
682 | stabstr_U (unsigned HOST_WIDE_INT num) | |
683 | { | |
684 | char buf[64]; | |
685 | char *p = buf + sizeof buf; | |
686 | if (num == 0) | |
687 | { | |
688 | stabstr_C ('0'); | |
689 | return; | |
690 | } | |
691 | NUMBER_FMT_LOOP (p, num, 10); | |
692 | obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p); | |
693 | } | |
694 | ||
695 | /* Add CST, an INTEGER_CST tree, to the string being built as an | |
696 | unsigned octal number. This routine handles values which are | |
697 | larger than a single HOST_WIDE_INT. */ | |
698 | static void | |
699 | stabstr_O (tree cst) | |
700 | { | |
ab2c1de8 | 701 | int prec = TYPE_PRECISION (TREE_TYPE (cst)); |
e913b5cd | 702 | int res_pres = prec % 3; |
703 | int i; | |
704 | unsigned int digit; | |
d0de818d | 705 | |
706 | /* Leading zero for base indicator. */ | |
707 | stabstr_C ('0'); | |
708 | ||
709 | /* If the value is zero, the base indicator will serve as the value | |
710 | all by itself. */ | |
ab2c1de8 | 711 | if (wi::eq_p (cst, 0)) |
d0de818d | 712 | return; |
713 | ||
e913b5cd | 714 | /* GDB wants constants with no extra leading "1" bits, so |
715 | we need to remove any sign-extension that might be | |
716 | present. */ | |
717 | if (res_pres == 1) | |
d0de818d | 718 | { |
ab2c1de8 | 719 | digit = wi::extract_uhwi (cst, prec - 1, 1); |
e913b5cd | 720 | stabstr_C ('0' + digit); |
721 | } | |
722 | else if (res_pres == 2) | |
723 | { | |
ab2c1de8 | 724 | digit = wi::extract_uhwi (cst, prec - 2, 2); |
e913b5cd | 725 | stabstr_C ('0' + digit); |
d0de818d | 726 | } |
727 | ||
e913b5cd | 728 | prec -= res_pres; |
6558a2fd | 729 | for (i = prec - 3; i >= 0; i = i - 3) |
e913b5cd | 730 | { |
ab2c1de8 | 731 | digit = wi::extract_uhwi (cst, i, 3); |
e913b5cd | 732 | stabstr_C ('0' + digit); |
733 | } | |
d0de818d | 734 | } |
735 | ||
736 | /* Called whenever it is safe to break a stabs string into multiple | |
737 | .stabs directives. If the current string has exceeded the limit | |
738 | set by DBX_CONTIN_LENGTH, mark the current position in the buffer | |
739 | as a continuation point by inserting DBX_CONTIN_CHAR (doubled if | |
740 | it is a backslash) and a null character. */ | |
741 | static inline void | |
742 | stabstr_continue (void) | |
743 | { | |
744 | if (DBX_CONTIN_LENGTH > 0 | |
745 | && obstack_object_size (&stabstr_ob) - stabstr_last_contin_point | |
746 | > DBX_CONTIN_LENGTH) | |
747 | { | |
748 | if (DBX_CONTIN_CHAR == '\\') | |
749 | obstack_1grow (&stabstr_ob, '\\'); | |
750 | obstack_1grow (&stabstr_ob, DBX_CONTIN_CHAR); | |
751 | obstack_1grow (&stabstr_ob, '\0'); | |
752 | stabstr_last_contin_point = obstack_object_size (&stabstr_ob); | |
753 | } | |
754 | } | |
755 | #define CONTIN stabstr_continue () | |
756 | ||
757 | /* Macro subroutine of dbxout_finish_complex_stabs, which emits | |
758 | all of the arguments to the .stabs directive after the string. | |
759 | Overridden by xcoffout.h. CODE is the stabs code for this symbol; | |
760 | LINE is the source line to write into the desc field (in extended | |
8a2df6f8 | 761 | mode); SYM is the symbol itself. |
d0de818d | 762 | |
763 | ADDR, LABEL, and NUMBER are three different ways to represent the | |
764 | stabs value field. At most one of these should be nonzero. | |
765 | ||
766 | ADDR is used most of the time; it represents the value as an | |
767 | RTL address constant. | |
768 | ||
769 | LABEL is used (currently) only for N_CATCH stabs; it represents | |
770 | the value as a string suitable for assemble_name. | |
771 | ||
772 | NUMBER is used when the value is an offset from an implicit base | |
773 | pointer (e.g. for a stack variable), or an index (e.g. for a | |
774 | register variable). It represents the value as a decimal integer. */ | |
775 | ||
776 | #ifndef DBX_FINISH_STABS | |
8a2df6f8 | 777 | #define DBX_FINISH_STABS(SYM, CODE, LINE, ADDR, LABEL, NUMBER) \ |
778 | do { \ | |
d0de818d | 779 | int line_ = use_gnu_debug_info_extensions ? LINE : 0; \ |
780 | \ | |
781 | dbxout_int (CODE); \ | |
782 | fputs (",0,", asm_out_file); \ | |
783 | dbxout_int (line_); \ | |
784 | putc (',', asm_out_file); \ | |
785 | if (ADDR) \ | |
786 | output_addr_const (asm_out_file, ADDR); \ | |
787 | else if (LABEL) \ | |
788 | assemble_name (asm_out_file, LABEL); \ | |
789 | else \ | |
790 | dbxout_int (NUMBER); \ | |
791 | putc ('\n', asm_out_file); \ | |
792 | } while (0) | |
793 | #endif | |
794 | ||
795 | /* Finish the emission of a complex .stabs directive. When DBX_CONTIN_LENGTH | |
796 | is zero, this has only to emit the close quote and the remainder of | |
797 | the arguments. When it is nonzero, the string has been marshalled in | |
798 | stabstr_ob, and this routine is responsible for breaking it up into | |
799 | DBX_CONTIN_LENGTH-sized chunks. | |
800 | ||
801 | SYM is the DECL of the symbol under consideration; it is used only | |
802 | for its DECL_SOURCE_LINE. The other arguments are all passed directly | |
803 | to DBX_FINISH_STABS; see above for details. */ | |
48e1416a | 804 | |
d0de818d | 805 | static void |
c1e61953 | 806 | dbxout_finish_complex_stabs (tree sym, stab_code_type code, |
d0de818d | 807 | rtx addr, const char *label, int number) |
808 | { | |
16d1038e | 809 | int line ATTRIBUTE_UNUSED; |
d0de818d | 810 | char *str; |
811 | size_t len; | |
812 | ||
16d1038e | 813 | line = sym ? DECL_SOURCE_LINE (sym) : 0; |
d0de818d | 814 | if (DBX_CONTIN_LENGTH > 0) |
815 | { | |
816 | char *chunk; | |
817 | size_t chunklen; | |
818 | ||
819 | /* Nul-terminate the growing string, then get its size and | |
820 | address. */ | |
821 | obstack_1grow (&stabstr_ob, '\0'); | |
822 | ||
823 | len = obstack_object_size (&stabstr_ob); | |
4fac984f | 824 | chunk = str = XOBFINISH (&stabstr_ob, char *); |
d0de818d | 825 | |
826 | /* Within the buffer are a sequence of NUL-separated strings, | |
827 | each of which is to be written out as a separate stab | |
828 | directive. */ | |
829 | for (;;) | |
830 | { | |
831 | chunklen = strlen (chunk); | |
832 | fwrite (chunk, 1, chunklen, asm_out_file); | |
833 | fputs ("\",", asm_out_file); | |
834 | ||
835 | /* Must add an extra byte to account for the NUL separator. */ | |
836 | chunk += chunklen + 1; | |
837 | len -= chunklen + 1; | |
838 | ||
839 | /* Only put a line number on the last stab in the sequence. */ | |
8a2df6f8 | 840 | DBX_FINISH_STABS (sym, code, len == 0 ? line : 0, |
841 | addr, label, number); | |
d0de818d | 842 | if (len == 0) |
843 | break; | |
844 | ||
845 | fputs (ASM_STABS_OP, asm_out_file); | |
846 | putc ('"', asm_out_file); | |
847 | } | |
848 | stabstr_last_contin_point = 0; | |
849 | } | |
850 | else | |
851 | { | |
852 | /* No continuations - we can put the whole string out at once. | |
853 | It is faster to augment the string with the close quote and | |
854 | comma than to do a two-character fputs. */ | |
855 | obstack_grow (&stabstr_ob, "\",", 2); | |
856 | len = obstack_object_size (&stabstr_ob); | |
4fac984f | 857 | str = XOBFINISH (&stabstr_ob, char *); |
48e1416a | 858 | |
d0de818d | 859 | fwrite (str, 1, len, asm_out_file); |
8a2df6f8 | 860 | DBX_FINISH_STABS (sym, code, line, addr, label, number); |
d0de818d | 861 | } |
862 | obstack_free (&stabstr_ob, str); | |
863 | } | |
864 | ||
96df1423 | 865 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
d0de818d | 866 | |
7f146d20 | 867 | /* When -gused is used, emit debug info for only used symbols. But in |
868 | addition to the standard intercepted debug_hooks there are some | |
869 | direct calls into this file, i.e., dbxout_symbol, dbxout_parms, and | |
870 | dbxout_reg_params. Those routines may also be called from a higher | |
871 | level intercepted routine. So to prevent recording data for an inner | |
872 | call to one of these for an intercept, we maintain an intercept | |
873 | nesting counter (debug_nesting). We only save the intercepted | |
874 | arguments if the nesting is 1. */ | |
875 | static int debug_nesting = 0; | |
876 | ||
877 | static tree *symbol_queue; | |
878 | static int symbol_queue_index = 0; | |
879 | static int symbol_queue_size = 0; | |
880 | ||
881 | #define DBXOUT_DECR_NESTING \ | |
882 | if (--debug_nesting == 0 && symbol_queue_index > 0) \ | |
883 | { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); } | |
884 | ||
885 | #define DBXOUT_DECR_NESTING_AND_RETURN(x) \ | |
886 | do {--debug_nesting; return (x);} while (0) | |
887 | ||
96df1423 | 888 | #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */ |
889 | ||
890 | #if defined (DBX_DEBUGGING_INFO) | |
891 | ||
f6e3ef26 | 892 | static void |
888bd5c2 | 893 | dbxout_function_end (tree decl ATTRIBUTE_UNUSED) |
f6e3ef26 | 894 | { |
895 | char lscope_label_name[100]; | |
4f18499c | 896 | |
28a5f832 | 897 | /* The Lscope label must be emitted even if we aren't doing anything |
898 | else; dbxout_block needs it. */ | |
2f14b1f9 | 899 | switch_to_section (function_section (current_function_decl)); |
48e1416a | 900 | |
d0de818d | 901 | /* Convert Lscope into the appropriate format for local labels in case |
f6e3ef26 | 902 | the system doesn't insert underscores in front of user generated |
903 | labels. */ | |
ff1a5b4a | 904 | ASM_GENERATE_INTERNAL_LABEL (lscope_label_name, "Lscope", scope_labelno); |
905 | targetm.asm_out.internal_label (asm_out_file, "Lscope", scope_labelno); | |
f6e3ef26 | 906 | |
03f8fdbe | 907 | /* The N_FUN tag at the end of the function is a GNU extension, |
908 | which may be undesirable, and is unnecessary if we do not have | |
909 | named sections. */ | |
910 | if (!use_gnu_debug_info_extensions | |
911 | || NO_DBX_FUNCTION_END | |
218e3e4e | 912 | || !targetm_common.have_named_sections) |
03f8fdbe | 913 | return; |
914 | ||
f6e3ef26 | 915 | /* By convention, GCC will mark the end of a function with an N_FUN |
916 | symbol and an empty string. */ | |
1897b881 | 917 | if (flag_reorder_blocks_and_partition) |
918 | { | |
919 | dbxout_begin_empty_stabs (N_FUN); | |
48e1416a | 920 | dbxout_stab_value_label_diff (crtl->subsections.hot_section_end_label, |
abe32cce | 921 | crtl->subsections.hot_section_label); |
1897b881 | 922 | dbxout_begin_empty_stabs (N_FUN); |
48e1416a | 923 | dbxout_stab_value_label_diff (crtl->subsections.cold_section_end_label, |
abe32cce | 924 | crtl->subsections.cold_section_label); |
1897b881 | 925 | } |
926 | else | |
927 | { | |
a6e8892a | 928 | char begin_label[20]; |
929 | /* Reference current function start using LFBB. */ | |
ff1a5b4a | 930 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); |
1897b881 | 931 | dbxout_begin_empty_stabs (N_FUN); |
a6e8892a | 932 | dbxout_stab_value_label_diff (lscope_label_name, begin_label); |
1897b881 | 933 | } |
4ec92916 | 934 | |
7d6171f2 | 935 | if (!NO_DBX_BNSYM_ENSYM && !flag_debug_only_used_symbols) |
d0de818d | 936 | dbxout_stabd (N_ENSYM, 0); |
f6e3ef26 | 937 | } |
0c87a39e | 938 | #endif /* DBX_DEBUGGING_INFO */ |
f6e3ef26 | 939 | |
913910e0 | 940 | /* Get lang description for N_SO stab. */ |
d0de818d | 941 | static unsigned int ATTRIBUTE_UNUSED |
913910e0 | 942 | get_lang_number (void) |
943 | { | |
944 | const char *language_string = lang_hooks.name; | |
3a4a2292 | 945 | if (lang_GNU_C ()) |
913910e0 | 946 | return N_SO_C; |
3a4a2292 | 947 | else if (lang_GNU_CXX ()) |
913910e0 | 948 | return N_SO_CC; |
949 | else if (strcmp (language_string, "GNU F77") == 0) | |
950 | return N_SO_FORTRAN; | |
f36f9b8b | 951 | else if (lang_GNU_Fortran ()) |
913910e0 | 952 | return N_SO_FORTRAN90; /* CHECKME */ |
953 | else if (strcmp (language_string, "GNU Pascal") == 0) | |
954 | return N_SO_PASCAL; | |
955 | else if (strcmp (language_string, "GNU Objective-C") == 0) | |
956 | return N_SO_OBJC; | |
ddb5d39d | 957 | else if (strcmp (language_string, "GNU Objective-C++") == 0) |
958 | return N_SO_OBJCPLUS; | |
913910e0 | 959 | else |
960 | return 0; | |
961 | ||
962 | } | |
963 | ||
a12691f0 | 964 | static bool |
965 | is_fortran (void) | |
966 | { | |
967 | unsigned int lang = get_lang_number (); | |
968 | ||
969 | return (lang == N_SO_FORTRAN) || (lang == N_SO_FORTRAN90); | |
970 | } | |
971 | ||
946754ae | 972 | /* At the beginning of compilation, start writing the symbol table. |
973 | Initialize `typevec' and output the standard data types of C. */ | |
974 | ||
b896d81b | 975 | static void |
8ec3a57b | 976 | dbxout_init (const char *input_file_name) |
946754ae | 977 | { |
978 | char ltext_label_name[100]; | |
d0de818d | 979 | bool used_ltext_label_name = false; |
dc24ddbd | 980 | tree syms = lang_hooks.decls.getdecls (); |
5f1f2de5 | 981 | const char *mapped_name; |
946754ae | 982 | |
946754ae | 983 | typevec_len = 100; |
25a27413 | 984 | typevec = ggc_cleared_vec_alloc<typeinfo> (typevec_len); |
946754ae | 985 | |
d0de818d | 986 | /* stabstr_ob contains one string, which will be just fine with |
987 | 1-byte alignment. */ | |
988 | obstack_specify_allocation (&stabstr_ob, 0, 1, xmalloc, free); | |
989 | ||
946754ae | 990 | /* Convert Ltext into the appropriate format for local labels in case |
991 | the system doesn't insert underscores in front of user generated | |
992 | labels. */ | |
993 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
994 | ||
995 | /* Put the current working directory in an N_SO symbol. */ | |
d0de818d | 996 | if (use_gnu_debug_info_extensions && !NO_DBX_MAIN_SOURCE_DIRECTORY) |
439c05a0 | 997 | { |
52cae7bf | 998 | static const char *cwd; |
999 | ||
1000 | if (!cwd) | |
439c05a0 | 1001 | { |
52cae7bf | 1002 | cwd = get_src_pwd (); |
1003 | if (cwd[0] == '\0') | |
1004 | cwd = "/"; | |
1005 | else if (!IS_DIR_SEPARATOR (cwd[strlen (cwd) - 1])) | |
1006 | cwd = concat (cwd, "/", NULL); | |
5f1f2de5 | 1007 | cwd = remap_debug_filename (cwd); |
52cae7bf | 1008 | } |
946754ae | 1009 | #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY |
52cae7bf | 1010 | DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asm_out_file, cwd); |
946754ae | 1011 | #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
d0de818d | 1012 | dbxout_begin_simple_stabs_desc (cwd, N_SO, get_lang_number ()); |
1013 | dbxout_stab_value_label (ltext_label_name); | |
1014 | used_ltext_label_name = true; | |
946754ae | 1015 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
439c05a0 | 1016 | } |
946754ae | 1017 | |
5f1f2de5 | 1018 | mapped_name = remap_debug_filename (input_file_name); |
946754ae | 1019 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME |
5f1f2de5 | 1020 | DBX_OUTPUT_MAIN_SOURCE_FILENAME (asm_out_file, mapped_name); |
08c78c16 | 1021 | #else |
5f1f2de5 | 1022 | dbxout_begin_simple_stabs_desc (mapped_name, N_SO, get_lang_number ()); |
d0de818d | 1023 | dbxout_stab_value_label (ltext_label_name); |
1024 | used_ltext_label_name = true; | |
1025 | #endif | |
1026 | ||
1027 | if (used_ltext_label_name) | |
1028 | { | |
2f14b1f9 | 1029 | switch_to_section (text_section); |
d0de818d | 1030 | targetm.asm_out.internal_label (asm_out_file, "Ltext", 0); |
1031 | } | |
1032 | ||
52cae7bf | 1033 | /* Emit an N_OPT stab to indicate that this file was compiled by GCC. |
1034 | The string used is historical. */ | |
d0de818d | 1035 | #ifndef NO_DBX_GCC_MARKER |
1036 | dbxout_begin_simple_stabs ("gcc2_compiled.", N_OPT); | |
1037 | dbxout_stab_value_zero (); | |
08c78c16 | 1038 | #endif |
ec6884ea | 1039 | |
cf8e41a4 | 1040 | base_input_file = lastfile = input_file_name; |
946754ae | 1041 | |
1042 | next_type_number = 1; | |
946754ae | 1043 | |
54ae7e56 | 1044 | #ifdef DBX_USE_BINCL |
4c36ffe6 | 1045 | current_file = XNEW (struct dbx_file); |
54ae7e56 | 1046 | current_file->next = NULL; |
1047 | current_file->file_number = 0; | |
1048 | current_file->next_type_number = 1; | |
1049 | next_file_number = 1; | |
51cec339 | 1050 | current_file->prev = NULL; |
1051 | current_file->bincl_status = BINCL_NOT_REQUIRED; | |
1052 | current_file->pending_bincl_name = NULL; | |
54ae7e56 | 1053 | #endif |
1054 | ||
54bd1509 | 1055 | /* Get all permanent types that have typedef names, and output them |
1056 | all, except for those already output. Some language front ends | |
73ae3ef7 | 1057 | put these declarations in the top-level scope; some do not; |
1058 | the latter are responsible for calling debug_hooks->type_decl from | |
1059 | their record_builtin_type function. */ | |
946754ae | 1060 | dbxout_typedefs (syms); |
73ae3ef7 | 1061 | |
1062 | if (preinit_symbols) | |
1063 | { | |
1064 | tree t; | |
1065 | for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t)) | |
1066 | dbxout_symbol (TREE_VALUE (t), 0); | |
1067 | preinit_symbols = 0; | |
1068 | } | |
946754ae | 1069 | } |
1070 | ||
e9efa031 | 1071 | /* Output any typedef names for types described by TYPE_DECLs in SYMS. */ |
946754ae | 1072 | |
1073 | static void | |
8ec3a57b | 1074 | dbxout_typedefs (tree syms) |
946754ae | 1075 | { |
1767a056 | 1076 | for (; syms != NULL_TREE; syms = DECL_CHAIN (syms)) |
946754ae | 1077 | { |
946754ae | 1078 | if (TREE_CODE (syms) == TYPE_DECL) |
1079 | { | |
1080 | tree type = TREE_TYPE (syms); | |
1081 | if (TYPE_NAME (type) | |
1082 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
14ce540d | 1083 | && COMPLETE_OR_VOID_TYPE_P (type) |
946754ae | 1084 | && ! TREE_ASM_WRITTEN (TYPE_NAME (type))) |
1085 | dbxout_symbol (TYPE_NAME (type), 0); | |
1086 | } | |
1087 | } | |
1088 | } | |
1089 | ||
2a3d2f63 | 1090 | #ifdef DBX_USE_BINCL |
81d47035 | 1091 | /* Emit BINCL stab using given name. */ |
51cec339 | 1092 | static void |
1093 | emit_bincl_stab (const char *name) | |
1094 | { | |
d0de818d | 1095 | dbxout_begin_simple_stabs (name, N_BINCL); |
1096 | dbxout_stab_value_zero (); | |
51cec339 | 1097 | } |
1098 | ||
1099 | /* If there are pending bincls then it is time to emit all of them. */ | |
1100 | ||
1101 | static inline void | |
a046944b | 1102 | emit_pending_bincls_if_required (void) |
51cec339 | 1103 | { |
51cec339 | 1104 | if (pending_bincls) |
1105 | emit_pending_bincls (); | |
51cec339 | 1106 | } |
1107 | ||
1108 | /* Emit all pending bincls. */ | |
1109 | ||
1110 | static void | |
a046944b | 1111 | emit_pending_bincls (void) |
51cec339 | 1112 | { |
1113 | struct dbx_file *f = current_file; | |
1114 | ||
1115 | /* Find first pending bincl. */ | |
1116 | while (f->bincl_status == BINCL_PENDING) | |
1117 | f = f->next; | |
1118 | ||
1119 | /* Now emit all bincls. */ | |
1120 | f = f->prev; | |
1121 | ||
1122 | while (f) | |
1123 | { | |
1124 | if (f->bincl_status == BINCL_PENDING) | |
1125 | { | |
1126 | emit_bincl_stab (f->pending_bincl_name); | |
1127 | ||
1128 | /* Update file number and status. */ | |
1129 | f->file_number = next_file_number++; | |
1130 | f->bincl_status = BINCL_PROCESSED; | |
1131 | } | |
1132 | if (f == current_file) | |
1133 | break; | |
1134 | f = f->prev; | |
1135 | } | |
1136 | ||
1137 | /* All pending bincls have been emitted. */ | |
1138 | pending_bincls = 0; | |
1139 | } | |
1140 | ||
2a3d2f63 | 1141 | #else |
1142 | ||
1143 | static inline void | |
a046944b | 1144 | emit_pending_bincls_if_required (void) {} |
2a3d2f63 | 1145 | #endif |
1146 | ||
54ae7e56 | 1147 | /* Change to reading from a new source file. Generate a N_BINCL stab. */ |
1148 | ||
c140b944 | 1149 | static void |
8ec3a57b | 1150 | dbxout_start_source_file (unsigned int line ATTRIBUTE_UNUSED, |
1151 | const char *filename ATTRIBUTE_UNUSED) | |
54ae7e56 | 1152 | { |
1153 | #ifdef DBX_USE_BINCL | |
4c36ffe6 | 1154 | struct dbx_file *n = XNEW (struct dbx_file); |
54ae7e56 | 1155 | |
1156 | n->next = current_file; | |
54ae7e56 | 1157 | n->next_type_number = 1; |
48e1416a | 1158 | /* Do not assign file number now. |
51cec339 | 1159 | Delay it until we actually emit BINCL. */ |
1160 | n->file_number = 0; | |
1161 | n->prev = NULL; | |
1162 | current_file->prev = n; | |
1163 | n->bincl_status = BINCL_PENDING; | |
5f1f2de5 | 1164 | n->pending_bincl_name = remap_debug_filename (filename); |
51cec339 | 1165 | pending_bincls = 1; |
54ae7e56 | 1166 | current_file = n; |
54ae7e56 | 1167 | #endif |
1168 | } | |
1169 | ||
1170 | /* Revert to reading a previous source file. Generate a N_EINCL stab. */ | |
1171 | ||
c140b944 | 1172 | static void |
8ec3a57b | 1173 | dbxout_end_source_file (unsigned int line ATTRIBUTE_UNUSED) |
54ae7e56 | 1174 | { |
1175 | #ifdef DBX_USE_BINCL | |
51cec339 | 1176 | /* Emit EINCL stab only if BINCL is not pending. */ |
1177 | if (current_file->bincl_status == BINCL_PROCESSED) | |
d0de818d | 1178 | { |
1179 | dbxout_begin_stabn (N_EINCL); | |
1180 | dbxout_stab_value_zero (); | |
1181 | } | |
51cec339 | 1182 | current_file->bincl_status = BINCL_NOT_REQUIRED; |
573aba85 | 1183 | current_file = current_file->next; |
54ae7e56 | 1184 | #endif |
1185 | } | |
1186 | ||
cf8e41a4 | 1187 | /* Handle a few odd cases that occur when trying to make PCH files work. */ |
1188 | ||
1189 | static void | |
1190 | dbxout_handle_pch (unsigned at_end) | |
1191 | { | |
1192 | if (! at_end) | |
1193 | { | |
1194 | /* When using the PCH, this file will be included, so we need to output | |
1195 | a BINCL. */ | |
1196 | dbxout_start_source_file (0, lastfile); | |
1197 | ||
1198 | /* The base file when using the PCH won't be the same as | |
1199 | the base file when it's being generated. */ | |
1200 | lastfile = NULL; | |
1201 | } | |
1202 | else | |
1203 | { | |
6473f3f4 | 1204 | /* ... and an EINCL. */ |
cf8e41a4 | 1205 | dbxout_end_source_file (0); |
1206 | ||
1207 | /* Deal with cases where 'lastfile' was never actually changed. */ | |
1208 | lastfile_is_base = lastfile == NULL; | |
1209 | } | |
1210 | } | |
1211 | ||
0c87a39e | 1212 | #if defined (DBX_DEBUGGING_INFO) |
4ceb34b9 | 1213 | |
1214 | static void dbxout_block (tree, int, tree); | |
1215 | ||
946754ae | 1216 | /* Output debugging info to FILE to switch to sourcefile FILENAME. */ |
1217 | ||
b29760a8 | 1218 | static void |
d0de818d | 1219 | dbxout_source_file (const char *filename) |
946754ae | 1220 | { |
cf8e41a4 | 1221 | if (lastfile == 0 && lastfile_is_base) |
1222 | { | |
1223 | lastfile = base_input_file; | |
1224 | lastfile_is_base = 0; | |
1225 | } | |
1226 | ||
946754ae | 1227 | if (filename && (lastfile == 0 || strcmp (filename, lastfile))) |
1228 | { | |
d0de818d | 1229 | /* Don't change section amid function. */ |
1230 | if (current_function_decl == NULL_TREE) | |
2f14b1f9 | 1231 | switch_to_section (text_section); |
d0de818d | 1232 | |
5f1f2de5 | 1233 | dbxout_begin_simple_stabs (remap_debug_filename (filename), N_SOL); |
d0de818d | 1234 | dbxout_stab_value_internal_label ("Ltext", &source_label_number); |
946754ae | 1235 | lastfile = filename; |
1236 | } | |
1237 | } | |
1238 | ||
48e1416a | 1239 | /* Output N_BNSYM, line number symbol entry, and local symbol at |
a6e8892a | 1240 | function scope */ |
4ec92916 | 1241 | |
1242 | static void | |
1243 | dbxout_begin_prologue (unsigned int lineno, const char *filename) | |
1244 | { | |
a3407969 | 1245 | if (use_gnu_debug_info_extensions |
1246 | && !NO_DBX_FUNCTION_END | |
7d6171f2 | 1247 | && !NO_DBX_BNSYM_ENSYM |
a3407969 | 1248 | && !flag_debug_only_used_symbols) |
d0de818d | 1249 | dbxout_stabd (N_BNSYM, 0); |
4ec92916 | 1250 | |
ff1a5b4a | 1251 | /* pre-increment the scope counter */ |
1252 | scope_labelno++; | |
1253 | ||
1488fe24 | 1254 | dbxout_source_line (lineno, filename, 0, true); |
48e1416a | 1255 | /* Output function begin block at function scope, referenced |
a6e8892a | 1256 | by dbxout_block, dbxout_source_line and dbxout_function_end. */ |
1257 | emit_pending_bincls_if_required (); | |
1258 | targetm.asm_out.internal_label (asm_out_file, "LFBB", scope_labelno); | |
4ec92916 | 1259 | } |
1260 | ||
f76df888 | 1261 | /* Output a line number symbol entry for source file FILENAME and line |
1262 | number LINENO. */ | |
5e3b69f4 | 1263 | |
b9b7f8b4 | 1264 | static void |
d01c707b | 1265 | dbxout_source_line (unsigned int lineno, const char *filename, |
1488fe24 | 1266 | int discriminator ATTRIBUTE_UNUSED, |
1267 | bool is_stmt ATTRIBUTE_UNUSED) | |
5e3b69f4 | 1268 | { |
d0de818d | 1269 | dbxout_source_file (filename); |
5e3b69f4 | 1270 | |
e3b8b697 | 1271 | #ifdef DBX_OUTPUT_SOURCE_LINE |
e3b8b697 | 1272 | DBX_OUTPUT_SOURCE_LINE (asm_out_file, lineno, dbxout_source_line_counter); |
5e3b69f4 | 1273 | #else |
e3b8b697 | 1274 | if (DBX_LINES_FUNCTION_RELATIVE) |
1275 | { | |
a6e8892a | 1276 | char begin_label[20]; |
d0de818d | 1277 | dbxout_begin_stabn_sline (lineno); |
a6e8892a | 1278 | /* Reference current function start using LFBB. */ |
48e1416a | 1279 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); |
d0de818d | 1280 | dbxout_stab_value_internal_label_diff ("LM", &dbxout_source_line_counter, |
a6e8892a | 1281 | begin_label); |
e3b8b697 | 1282 | } |
1283 | else | |
d0de818d | 1284 | dbxout_stabd (N_SLINE, lineno); |
5e3b69f4 | 1285 | #endif |
1286 | } | |
1287 | ||
1dff614c | 1288 | /* Describe the beginning of an internal block within a function. */ |
1289 | ||
1290 | static void | |
8ec3a57b | 1291 | dbxout_begin_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n) |
1dff614c | 1292 | { |
51cec339 | 1293 | emit_pending_bincls_if_required (); |
e3b8b697 | 1294 | targetm.asm_out.internal_label (asm_out_file, "LBB", n); |
1dff614c | 1295 | } |
1296 | ||
1297 | /* Describe the end line-number of an internal block within a function. */ | |
1298 | ||
1299 | static void | |
8ec3a57b | 1300 | dbxout_end_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n) |
1dff614c | 1301 | { |
51cec339 | 1302 | emit_pending_bincls_if_required (); |
e3b8b697 | 1303 | targetm.asm_out.internal_label (asm_out_file, "LBE", n); |
1dff614c | 1304 | } |
1305 | ||
c37d72e9 | 1306 | /* Output dbx data for a function definition. |
1307 | This includes a definition of the function name itself (a symbol), | |
1308 | definitions of the parameters (locating them in the parameter list) | |
1309 | and then output the block that makes up the function's body | |
1310 | (including all the auto variables of the function). */ | |
1311 | ||
1312 | static void | |
8ec3a57b | 1313 | dbxout_function_decl (tree decl) |
c37d72e9 | 1314 | { |
51cec339 | 1315 | emit_pending_bincls_if_required (); |
c37d72e9 | 1316 | #ifndef DBX_FUNCTION_FIRST |
1317 | dbxout_begin_function (decl); | |
1318 | #endif | |
1319 | dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); | |
475c9f56 | 1320 | dbxout_function_end (decl); |
c37d72e9 | 1321 | } |
1322 | ||
1dff614c | 1323 | #endif /* DBX_DEBUGGING_INFO */ |
1324 | ||
3a1c9df2 | 1325 | static void |
1326 | dbxout_early_global_decl (tree decl ATTRIBUTE_UNUSED) | |
1327 | { | |
1328 | /* NYI for non-dwarf. */ | |
1329 | } | |
1330 | ||
397c7bc7 | 1331 | /* Debug information for a global DECL. Called from toplev.c after |
1332 | compilation proper has finished. */ | |
1333 | static void | |
3a1c9df2 | 1334 | dbxout_late_global_decl (tree decl) |
397c7bc7 | 1335 | { |
50a7abc5 | 1336 | if (TREE_CODE (decl) == VAR_DECL && !DECL_EXTERNAL (decl)) |
262444a6 | 1337 | { |
1338 | int saved_tree_used = TREE_USED (decl); | |
1339 | TREE_USED (decl) = 1; | |
1340 | dbxout_symbol (decl, 0); | |
1341 | TREE_USED (decl) = saved_tree_used; | |
1342 | } | |
1eefe280 | 1343 | } |
397c7bc7 | 1344 | |
73ae3ef7 | 1345 | /* This is just a function-type adapter; dbxout_symbol does exactly |
1346 | what we want but returns an int. */ | |
1347 | static void | |
1348 | dbxout_type_decl (tree decl, int local) | |
1349 | { | |
1350 | dbxout_symbol (decl, local); | |
1351 | } | |
1352 | ||
946754ae | 1353 | /* At the end of compilation, finish writing the symbol table. |
e3b8b697 | 1354 | The default is to call debug_free_queue but do nothing else. */ |
946754ae | 1355 | |
b896d81b | 1356 | static void |
8ec3a57b | 1357 | dbxout_finish (const char *filename ATTRIBUTE_UNUSED) |
946754ae | 1358 | { |
1359 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END | |
e3b8b697 | 1360 | DBX_OUTPUT_MAIN_SOURCE_FILE_END (asm_out_file, filename); |
1361 | #elif defined DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END | |
1362 | { | |
2f14b1f9 | 1363 | switch_to_section (text_section); |
d0de818d | 1364 | dbxout_begin_empty_stabs (N_SO); |
1365 | dbxout_stab_value_internal_label ("Letext", 0); | |
e3b8b697 | 1366 | } |
1367 | #endif | |
262444a6 | 1368 | debug_free_queue (); |
946754ae | 1369 | } |
1370 | ||
54ae7e56 | 1371 | /* Output the index of a type. */ |
1372 | ||
1373 | static void | |
8ec3a57b | 1374 | dbxout_type_index (tree type) |
54ae7e56 | 1375 | { |
1376 | #ifndef DBX_USE_BINCL | |
d0de818d | 1377 | stabstr_D (TYPE_SYMTAB_ADDRESS (type)); |
54ae7e56 | 1378 | #else |
1379 | struct typeinfo *t = &typevec[TYPE_SYMTAB_ADDRESS (type)]; | |
d0de818d | 1380 | stabstr_C ('('); |
1381 | stabstr_D (t->file_number); | |
1382 | stabstr_C (','); | |
1383 | stabstr_D (t->type_number); | |
1384 | stabstr_C (')'); | |
54ae7e56 | 1385 | #endif |
1386 | } | |
1387 | ||
946754ae | 1388 | \f |
00e3fe44 | 1389 | /* Generate the symbols for any queued up type symbols we encountered |
1390 | while generating the type info for some originally used symbol. | |
1391 | This might generate additional entries in the queue. Only when | |
1392 | the nesting depth goes to 0 is this routine called. */ | |
1393 | ||
1394 | static void | |
1395 | debug_flush_symbol_queue (void) | |
1396 | { | |
1397 | int i; | |
1398 | ||
1399 | /* Make sure that additionally queued items are not flushed | |
1400 | prematurely. */ | |
1401 | ||
1402 | ++debug_nesting; | |
1403 | ||
1404 | for (i = 0; i < symbol_queue_index; ++i) | |
1405 | { | |
1406 | /* If we pushed queued symbols then such symbols must be | |
1407 | output no matter what anyone else says. Specifically, | |
1408 | we need to make sure dbxout_symbol() thinks the symbol was | |
1409 | used and also we need to override TYPE_DECL_SUPPRESS_DEBUG | |
1410 | which may be set for outside reasons. */ | |
1411 | int saved_tree_used = TREE_USED (symbol_queue[i]); | |
1412 | int saved_suppress_debug = TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]); | |
1413 | TREE_USED (symbol_queue[i]) = 1; | |
1414 | TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = 0; | |
1415 | ||
1416 | #ifdef DBX_DEBUGGING_INFO | |
1417 | dbxout_symbol (symbol_queue[i], 0); | |
1418 | #endif | |
1419 | ||
1420 | TREE_USED (symbol_queue[i]) = saved_tree_used; | |
1421 | TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = saved_suppress_debug; | |
1422 | } | |
1423 | ||
1424 | symbol_queue_index = 0; | |
1425 | --debug_nesting; | |
1426 | } | |
1427 | ||
1428 | /* Queue a type symbol needed as part of the definition of a decl | |
1429 | symbol. These symbols are generated when debug_flush_symbol_queue() | |
1430 | is called. */ | |
d0de818d | 1431 | |
00e3fe44 | 1432 | static void |
1433 | debug_queue_symbol (tree decl) | |
1434 | { | |
1435 | if (symbol_queue_index >= symbol_queue_size) | |
1436 | { | |
1437 | symbol_queue_size += 10; | |
1438 | symbol_queue = XRESIZEVEC (tree, symbol_queue, symbol_queue_size); | |
1439 | } | |
1440 | ||
1441 | symbol_queue[symbol_queue_index++] = decl; | |
1442 | } | |
1443 | ||
1444 | /* Free symbol queue. */ | |
1445 | static void | |
1446 | debug_free_queue (void) | |
1447 | { | |
1448 | if (symbol_queue) | |
1449 | { | |
1450 | free (symbol_queue); | |
1451 | symbol_queue = NULL; | |
1452 | symbol_queue_size = 0; | |
1453 | } | |
1454 | } | |
1455 | \f | |
d0de818d | 1456 | /* Used in several places: evaluates to '0' for a private decl, |
1457 | '1' for a protected decl, '2' for a public decl. */ | |
1458 | #define DECL_ACCESSIBILITY_CHAR(DECL) \ | |
7ac958de | 1459 | (TREE_PRIVATE (DECL) ? '0' : TREE_PROTECTED (DECL) ? '1' : '2') |
d0de818d | 1460 | |
4bbea254 | 1461 | /* Subroutine of `dbxout_type'. Output the type fields of TYPE. |
946754ae | 1462 | This must be a separate function because anonymous unions require |
1463 | recursive calls. */ | |
1464 | ||
1465 | static void | |
8ec3a57b | 1466 | dbxout_type_fields (tree type) |
946754ae | 1467 | { |
1468 | tree tem; | |
5d844ba2 | 1469 | |
b264b33c | 1470 | /* Output the name, type, position (in bits), size (in bits) of each |
5d844ba2 | 1471 | field that we can support. */ |
1767a056 | 1472 | for (tem = TYPE_FIELDS (type); tem; tem = DECL_CHAIN (tem)) |
946754ae | 1473 | { |
af6ed417 | 1474 | /* If one of the nodes is an error_mark or its type is then |
1475 | return early. */ | |
da579dbb | 1476 | if (error_operand_p (tem)) |
11d99e06 | 1477 | return; |
1478 | ||
946754ae | 1479 | /* Omit here local type decls until we know how to support them. */ |
5d844ba2 | 1480 | if (TREE_CODE (tem) == TYPE_DECL |
26355ad6 | 1481 | /* Omit here the nameless fields that are used to skip bits. */ |
1482 | || DECL_IGNORED_P (tem) | |
5d844ba2 | 1483 | /* Omit fields whose position or size are variable or too large to |
1484 | represent. */ | |
1485 | || (TREE_CODE (tem) == FIELD_DECL | |
e913b5cd | 1486 | && (! tree_fits_shwi_p (bit_position (tem)) |
6460676e | 1487 | || ! DECL_SIZE (tem) |
e913b5cd | 1488 | || ! tree_fits_uhwi_p (DECL_SIZE (tem))))) |
61be0a71 | 1489 | continue; |
5d844ba2 | 1490 | |
c40b51de | 1491 | else if (TREE_CODE (tem) != CONST_DECL) |
946754ae | 1492 | { |
1493 | /* Continue the line if necessary, | |
1494 | but not before the first field. */ | |
1495 | if (tem != TYPE_FIELDS (type)) | |
5d844ba2 | 1496 | CONTIN; |
946754ae | 1497 | |
c40b51de | 1498 | if (DECL_NAME (tem)) |
d0de818d | 1499 | stabstr_I (DECL_NAME (tem)); |
1500 | stabstr_C (':'); | |
946754ae | 1501 | |
9cdc08c6 | 1502 | if (use_gnu_debug_info_extensions |
946754ae | 1503 | && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem) |
1504 | || TREE_CODE (tem) != FIELD_DECL)) | |
1505 | { | |
d0de818d | 1506 | stabstr_C ('/'); |
1507 | stabstr_C (DECL_ACCESSIBILITY_CHAR (tem)); | |
946754ae | 1508 | } |
1509 | ||
1510 | dbxout_type ((TREE_CODE (tem) == FIELD_DECL | |
1511 | && DECL_BIT_FIELD_TYPE (tem)) | |
9aa97f08 | 1512 | ? DECL_BIT_FIELD_TYPE (tem) : TREE_TYPE (tem), 0); |
946754ae | 1513 | |
1514 | if (TREE_CODE (tem) == VAR_DECL) | |
1515 | { | |
9cdc08c6 | 1516 | if (TREE_STATIC (tem) && use_gnu_debug_info_extensions) |
946754ae | 1517 | { |
d4b87fe5 | 1518 | tree name = DECL_ASSEMBLER_NAME (tem); |
1519 | ||
d0de818d | 1520 | stabstr_C (':'); |
1521 | stabstr_I (name); | |
1522 | stabstr_C (';'); | |
946754ae | 1523 | } |
1524 | else | |
d0de818d | 1525 | /* If TEM is non-static, GDB won't understand it. */ |
1526 | stabstr_S (",0,0;"); | |
946754ae | 1527 | } |
5d844ba2 | 1528 | else |
946754ae | 1529 | { |
d0de818d | 1530 | stabstr_C (','); |
1531 | stabstr_D (int_bit_position (tem)); | |
1532 | stabstr_C (','); | |
e913b5cd | 1533 | stabstr_D (tree_to_uhwi (DECL_SIZE (tem))); |
d0de818d | 1534 | stabstr_C (';'); |
946754ae | 1535 | } |
946754ae | 1536 | } |
1537 | } | |
1538 | } | |
1539 | \f | |
4bbea254 | 1540 | /* Subroutine of `dbxout_type_methods'. Output debug info about the |
d0de818d | 1541 | method described DECL. */ |
946754ae | 1542 | |
1543 | static void | |
d0de818d | 1544 | dbxout_type_method_1 (tree decl) |
946754ae | 1545 | { |
946754ae | 1546 | char c1 = 'A', c2; |
1547 | ||
1548 | if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE) | |
1549 | c2 = '?'; | |
1550 | else /* it's a METHOD_TYPE. */ | |
1551 | { | |
96704d5f | 1552 | tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))); |
946754ae | 1553 | /* A for normal functions. |
1554 | B for `const' member functions. | |
1555 | C for `volatile' member functions. | |
1556 | D for `const volatile' member functions. */ | |
1557 | if (TYPE_READONLY (TREE_TYPE (firstarg))) | |
1558 | c1 += 1; | |
1559 | if (TYPE_VOLATILE (TREE_TYPE (firstarg))) | |
1560 | c1 += 2; | |
1561 | ||
1562 | if (DECL_VINDEX (decl)) | |
1563 | c2 = '*'; | |
1564 | else | |
1565 | c2 = '.'; | |
1566 | } | |
1567 | ||
d0de818d | 1568 | /* ??? Output the mangled name, which contains an encoding of the |
1569 | method's type signature. May not be necessary anymore. */ | |
1570 | stabstr_C (':'); | |
1571 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
1572 | stabstr_C (';'); | |
1573 | stabstr_C (DECL_ACCESSIBILITY_CHAR (decl)); | |
1574 | stabstr_C (c1); | |
1575 | stabstr_C (c2); | |
5d844ba2 | 1576 | |
e913b5cd | 1577 | if (DECL_VINDEX (decl) && tree_fits_shwi_p (DECL_VINDEX (decl))) |
946754ae | 1578 | { |
e913b5cd | 1579 | stabstr_D (tree_to_shwi (DECL_VINDEX (decl))); |
d0de818d | 1580 | stabstr_C (';'); |
9aa97f08 | 1581 | dbxout_type (DECL_CONTEXT (decl), 0); |
d0de818d | 1582 | stabstr_C (';'); |
946754ae | 1583 | } |
1584 | } | |
1585 | \f | |
1586 | /* Subroutine of `dbxout_type'. Output debug info about the methods defined | |
1587 | in TYPE. */ | |
1588 | ||
1589 | static void | |
8ec3a57b | 1590 | dbxout_type_methods (tree type) |
946754ae | 1591 | { |
1592 | /* C++: put out the method names and their parameter lists */ | |
946754ae | 1593 | tree methods = TYPE_METHODS (type); |
19cb6b50 | 1594 | tree fndecl; |
1595 | tree last; | |
946754ae | 1596 | |
1597 | if (methods == NULL_TREE) | |
1598 | return; | |
1599 | ||
871b7da1 | 1600 | if (TREE_CODE (methods) != TREE_VEC) |
b23cec01 | 1601 | fndecl = methods; |
1602 | else if (TREE_VEC_ELT (methods, 0) != NULL_TREE) | |
946754ae | 1603 | fndecl = TREE_VEC_ELT (methods, 0); |
9cdc08c6 | 1604 | else |
1605 | fndecl = TREE_VEC_ELT (methods, 1); | |
946754ae | 1606 | |
946754ae | 1607 | while (fndecl) |
1608 | { | |
b769415e | 1609 | int need_prefix = 1; |
1610 | ||
d0bcb1eb | 1611 | /* Group together all the methods for the same operation. |
1612 | These differ in the types of the arguments. */ | |
946754ae | 1613 | for (last = NULL_TREE; |
1614 | fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last)); | |
1767a056 | 1615 | fndecl = DECL_CHAIN (fndecl)) |
946754ae | 1616 | /* Output the name of the field (after overloading), as |
1617 | well as the name of the field before overloading, along | |
1618 | with its parameter list */ | |
1619 | { | |
7e64c604 | 1620 | /* Skip methods that aren't FUNCTION_DECLs. (In C++, these |
1621 | include TEMPLATE_DECLs.) The debugger doesn't know what | |
1622 | to do with such entities anyhow. */ | |
1623 | if (TREE_CODE (fndecl) != FUNCTION_DECL) | |
1624 | continue; | |
1625 | ||
946754ae | 1626 | CONTIN; |
1627 | ||
1628 | last = fndecl; | |
d0bcb1eb | 1629 | |
8f80e66d | 1630 | /* Also ignore abstract methods; those are only interesting to |
1631 | the DWARF backends. */ | |
16d41ae2 | 1632 | if (DECL_IGNORED_P (fndecl) || DECL_ABSTRACT_P (fndecl)) |
d0bcb1eb | 1633 | continue; |
1634 | ||
b769415e | 1635 | /* Redundantly output the plain name, since that's what gdb |
1636 | expects. */ | |
1637 | if (need_prefix) | |
1638 | { | |
d0de818d | 1639 | stabstr_I (DECL_NAME (fndecl)); |
1640 | stabstr_S ("::"); | |
b769415e | 1641 | need_prefix = 0; |
1642 | } | |
1643 | ||
9aa97f08 | 1644 | dbxout_type (TREE_TYPE (fndecl), 0); |
d0de818d | 1645 | dbxout_type_method_1 (fndecl); |
946754ae | 1646 | } |
b769415e | 1647 | if (!need_prefix) |
d0de818d | 1648 | stabstr_C (';'); |
946754ae | 1649 | } |
1650 | } | |
bf503a12 | 1651 | |
1652 | /* Emit a "range" type specification, which has the form: | |
1653 | "r<index type>;<lower bound>;<upper bound>;". | |
a9538d68 | 1654 | TYPE is an INTEGER_TYPE, LOW and HIGH are the bounds. */ |
bf503a12 | 1655 | |
1656 | static void | |
a9538d68 | 1657 | dbxout_range_type (tree type, tree low, tree high) |
bf503a12 | 1658 | { |
d0de818d | 1659 | stabstr_C ('r'); |
a774577b | 1660 | if (TREE_TYPE (type)) |
9aa97f08 | 1661 | dbxout_type (TREE_TYPE (type), 0); |
0c688ce9 | 1662 | else if (TREE_CODE (type) != INTEGER_TYPE) |
9aa97f08 | 1663 | dbxout_type (type, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */ |
bf503a12 | 1664 | else |
1665 | { | |
255a4f1f | 1666 | /* Traditionally, we made sure 'int' was type 1, and builtin types |
1667 | were defined to be sub-ranges of int. Unfortunately, this | |
1668 | does not allow us to distinguish true sub-ranges from integer | |
1669 | types. So, instead we define integer (non-sub-range) types as | |
829f57e9 | 1670 | sub-ranges of themselves. This matters for Chill. If this isn't |
1671 | a subrange type, then we want to define it in terms of itself. | |
1672 | However, in C, this may be an anonymous integer type, and we don't | |
1673 | want to emit debug info referring to it. Just calling | |
1674 | dbxout_type_index won't work anyways, because the type hasn't been | |
1675 | defined yet. We make this work for both cases by checked to see | |
1676 | whether this is a defined type, referring to it if it is, and using | |
1677 | 'int' otherwise. */ | |
1678 | if (TYPE_SYMTAB_ADDRESS (type) != 0) | |
1679 | dbxout_type_index (type); | |
1680 | else | |
1681 | dbxout_type_index (integer_type_node); | |
bf503a12 | 1682 | } |
5d844ba2 | 1683 | |
d0de818d | 1684 | stabstr_C (';'); |
e913b5cd | 1685 | if (low && tree_fits_shwi_p (low)) |
9bf3e679 | 1686 | { |
a9538d68 | 1687 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
1688 | stabstr_O (low); | |
0989224f | 1689 | else |
e913b5cd | 1690 | stabstr_D (tree_to_shwi (low)); |
9bf3e679 | 1691 | } |
bf503a12 | 1692 | else |
d0de818d | 1693 | stabstr_C ('0'); |
5d844ba2 | 1694 | |
d0de818d | 1695 | stabstr_C (';'); |
e913b5cd | 1696 | if (high && tree_fits_shwi_p (high)) |
9bf3e679 | 1697 | { |
a9538d68 | 1698 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
1699 | stabstr_O (high); | |
0989224f | 1700 | else |
e913b5cd | 1701 | stabstr_D (tree_to_shwi (high)); |
d0de818d | 1702 | stabstr_C (';'); |
9bf3e679 | 1703 | } |
bf503a12 | 1704 | else |
d0de818d | 1705 | stabstr_S ("-1;"); |
bf503a12 | 1706 | } |
946754ae | 1707 | \f |
262444a6 | 1708 | |
946754ae | 1709 | /* Output a reference to a type. If the type has not yet been |
1710 | described in the dbx output, output its definition now. | |
1711 | For a type already defined, just refer to its definition | |
1712 | using the type number. | |
1713 | ||
1714 | If FULL is nonzero, and the type has been described only with | |
1715 | a forward-reference, output the definition now. | |
1716 | If FULL is zero in this case, just refer to the forward-reference | |
9aa97f08 | 1717 | using the number previously allocated. */ |
946754ae | 1718 | |
1719 | static void | |
8ec3a57b | 1720 | dbxout_type (tree type, int full) |
946754ae | 1721 | { |
c61d074f | 1722 | static int anonymous_type_number = 0; |
a9538d68 | 1723 | tree tem, main_variant, low, high; |
946754ae | 1724 | |
a9538d68 | 1725 | if (TREE_CODE (type) == INTEGER_TYPE) |
1726 | { | |
1727 | if (TREE_TYPE (type) == 0) | |
1728 | { | |
1729 | low = TYPE_MIN_VALUE (type); | |
1730 | high = TYPE_MAX_VALUE (type); | |
1731 | } | |
1732 | ||
1733 | else if (subrange_type_for_debug_p (type, &low, &high)) | |
1734 | ; | |
1735 | ||
1736 | /* If this is a subtype that should not be emitted as a subrange type, | |
1737 | use the base type. */ | |
1738 | else | |
1739 | { | |
1740 | type = TREE_TYPE (type); | |
1741 | low = TYPE_MIN_VALUE (type); | |
1742 | high = TYPE_MAX_VALUE (type); | |
1743 | } | |
1744 | } | |
1745 | ||
946754ae | 1746 | /* If there was an input error and we don't really have a type, |
1747 | avoid crashing and write something that is at least valid | |
1748 | by assuming `int'. */ | |
1749 | if (type == error_mark_node) | |
1750 | type = integer_type_node; | |
c48f961d | 1751 | else |
946754ae | 1752 | { |
946754ae | 1753 | if (TYPE_NAME (type) |
1754 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
ac3e80e4 | 1755 | && TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type))) |
946754ae | 1756 | full = 0; |
1757 | } | |
1758 | ||
1d971bfd | 1759 | /* Try to find the "main variant" with the same name. */ |
1760 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1761 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
1762 | main_variant = TREE_TYPE (TYPE_NAME (type)); | |
1763 | else | |
1764 | main_variant = TYPE_MAIN_VARIANT (type); | |
1765 | ||
1766 | /* If we are not using extensions, stabs does not distinguish const and | |
1767 | volatile, so there is no need to make them separate types. */ | |
1768 | if (!use_gnu_debug_info_extensions) | |
1769 | type = main_variant; | |
1770 | ||
946754ae | 1771 | if (TYPE_SYMTAB_ADDRESS (type) == 0) |
1772 | { | |
1773 | /* Type has no dbx number assigned. Assign next available number. */ | |
1774 | TYPE_SYMTAB_ADDRESS (type) = next_type_number++; | |
1775 | ||
1776 | /* Make sure type vector is long enough to record about this type. */ | |
1777 | ||
1778 | if (next_type_number == typevec_len) | |
1779 | { | |
364c0c59 | 1780 | typevec = GGC_RESIZEVEC (struct typeinfo, typevec, typevec_len * 2); |
f0af5a88 | 1781 | memset (typevec + typevec_len, 0, typevec_len * sizeof typevec[0]); |
946754ae | 1782 | typevec_len *= 2; |
1783 | } | |
54ae7e56 | 1784 | |
1785 | #ifdef DBX_USE_BINCL | |
51cec339 | 1786 | emit_pending_bincls_if_required (); |
37808e3a | 1787 | typevec[TYPE_SYMTAB_ADDRESS (type)].file_number |
1788 | = current_file->file_number; | |
1789 | typevec[TYPE_SYMTAB_ADDRESS (type)].type_number | |
1790 | = current_file->next_type_number++; | |
54ae7e56 | 1791 | #endif |
946754ae | 1792 | } |
1793 | ||
262444a6 | 1794 | if (flag_debug_only_used_symbols) |
1795 | { | |
1796 | if ((TREE_CODE (type) == RECORD_TYPE | |
1797 | || TREE_CODE (type) == UNION_TYPE | |
1798 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
1799 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
1800 | && TYPE_STUB_DECL (type) | |
ce45a448 | 1801 | && DECL_P (TYPE_STUB_DECL (type)) |
262444a6 | 1802 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (type))) |
1803 | debug_queue_symbol (TYPE_STUB_DECL (type)); | |
1804 | else if (TYPE_NAME (type) | |
1805 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
1806 | debug_queue_symbol (TYPE_NAME (type)); | |
1807 | } | |
8ec3a57b | 1808 | |
946754ae | 1809 | /* Output the number of this type, to refer to it. */ |
54ae7e56 | 1810 | dbxout_type_index (type); |
946754ae | 1811 | |
439c05a0 | 1812 | #ifdef DBX_TYPE_DEFINED |
1813 | if (DBX_TYPE_DEFINED (type)) | |
1814 | return; | |
1815 | #endif | |
1816 | ||
946754ae | 1817 | /* If this type's definition has been output or is now being output, |
1818 | that is all. */ | |
1819 | ||
54ae7e56 | 1820 | switch (typevec[TYPE_SYMTAB_ADDRESS (type)].status) |
946754ae | 1821 | { |
1822 | case TYPE_UNSEEN: | |
1823 | break; | |
1824 | case TYPE_XREF: | |
f10caba4 | 1825 | /* If we have already had a cross reference, |
1826 | and either that's all we want or that's the best we could do, | |
1827 | don't repeat the cross reference. | |
1828 | Sun dbx crashes if we do. */ | |
4b72716d | 1829 | if (! full || !COMPLETE_TYPE_P (type) |
f10caba4 | 1830 | /* No way in DBX fmt to describe a variable size. */ |
e913b5cd | 1831 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
946754ae | 1832 | return; |
1833 | break; | |
1834 | case TYPE_DEFINED: | |
1835 | return; | |
1836 | } | |
1837 | ||
1838 | #ifdef DBX_NO_XREFS | |
1839 | /* For systems where dbx output does not allow the `=xsNAME:' syntax, | |
1840 | leave the type-number completely undefined rather than output | |
7cac4c57 | 1841 | a cross-reference. If we have already used GNU debug info extensions, |
1842 | then it is OK to output a cross reference. This is necessary to get | |
1843 | proper C++ debug output. */ | |
1844 | if ((TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE | |
1845 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
1846 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
1847 | && ! use_gnu_debug_info_extensions) | |
5c579180 | 1848 | /* We must use the same test here as we use twice below when deciding |
1849 | whether to emit a cross-reference. */ | |
1850 | if ((TYPE_NAME (type) != 0 | |
1851 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1852 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
1853 | && !full) | |
4b72716d | 1854 | || !COMPLETE_TYPE_P (type) |
5c579180 | 1855 | /* No way in DBX fmt to describe a variable size. */ |
e913b5cd | 1856 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
946754ae | 1857 | { |
54ae7e56 | 1858 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
946754ae | 1859 | return; |
1860 | } | |
1861 | #endif | |
1862 | ||
1863 | /* Output a definition now. */ | |
d0de818d | 1864 | stabstr_C ('='); |
946754ae | 1865 | |
1866 | /* Mark it as defined, so that if it is self-referent | |
1867 | we will not get into an infinite recursion of definitions. */ | |
1868 | ||
54ae7e56 | 1869 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED; |
946754ae | 1870 | |
1d971bfd | 1871 | /* If this type is a variant of some other, hand off. Types with |
1872 | different names are usefully distinguished. We only distinguish | |
1873 | cv-qualified types if we're using extensions. */ | |
1874 | if (TYPE_READONLY (type) > TYPE_READONLY (main_variant)) | |
1875 | { | |
d0de818d | 1876 | stabstr_C ('k'); |
1d971bfd | 1877 | dbxout_type (build_type_variant (type, 0, TYPE_VOLATILE (type)), 0); |
1878 | return; | |
1879 | } | |
1880 | else if (TYPE_VOLATILE (type) > TYPE_VOLATILE (main_variant)) | |
1881 | { | |
d0de818d | 1882 | stabstr_C ('B'); |
1d971bfd | 1883 | dbxout_type (build_type_variant (type, TYPE_READONLY (type), 0), 0); |
1884 | return; | |
1885 | } | |
1886 | else if (main_variant != TYPE_MAIN_VARIANT (type)) | |
1887 | { | |
262444a6 | 1888 | if (flag_debug_only_used_symbols) |
1889 | { | |
1890 | tree orig_type = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
1891 | ||
8ec3a57b | 1892 | if ((TREE_CODE (orig_type) == RECORD_TYPE |
262444a6 | 1893 | || TREE_CODE (orig_type) == UNION_TYPE |
1894 | || TREE_CODE (orig_type) == QUAL_UNION_TYPE | |
1895 | || TREE_CODE (orig_type) == ENUMERAL_TYPE) | |
1896 | && TYPE_STUB_DECL (orig_type) | |
1897 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (orig_type))) | |
1898 | debug_queue_symbol (TYPE_STUB_DECL (orig_type)); | |
1899 | } | |
1d971bfd | 1900 | /* 'type' is a typedef; output the type it refers to. */ |
9aa97f08 | 1901 | dbxout_type (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), 0); |
4a4d93c2 | 1902 | return; |
1903 | } | |
1d971bfd | 1904 | /* else continue. */ |
4a4d93c2 | 1905 | |
946754ae | 1906 | switch (TREE_CODE (type)) |
1907 | { | |
1908 | case VOID_TYPE: | |
fa67d8e8 | 1909 | case NULLPTR_TYPE: |
946754ae | 1910 | case LANG_TYPE: |
0c6d8c36 | 1911 | /* For a void type, just define it as itself; i.e., "5=5". |
946754ae | 1912 | This makes us consider it defined |
1913 | without saying what it is. The debugger will make it | |
1914 | a void type when the reference is seen, and nothing will | |
1915 | ever override that default. */ | |
54ae7e56 | 1916 | dbxout_type_index (type); |
946754ae | 1917 | break; |
1918 | ||
1919 | case INTEGER_TYPE: | |
78a8ed03 | 1920 | if (type == char_type_node && ! TYPE_UNSIGNED (type)) |
54ae7e56 | 1921 | { |
1922 | /* Output the type `char' as a subrange of itself! | |
1923 | I don't understand this definition, just copied it | |
1924 | from the output of pcc. | |
1925 | This used to use `r2' explicitly and we used to | |
1926 | take care to make sure that `char' was type number 2. */ | |
d0de818d | 1927 | stabstr_C ('r'); |
54ae7e56 | 1928 | dbxout_type_index (type); |
d0de818d | 1929 | stabstr_S (";0;127;"); |
54ae7e56 | 1930 | } |
155b05dc | 1931 | |
1932 | /* If this is a subtype of another integer type, always prefer to | |
1933 | write it as a subtype. */ | |
1934 | else if (TREE_TYPE (type) != 0 | |
79433a4c | 1935 | && TREE_CODE (TREE_TYPE (type)) == INTEGER_TYPE) |
1eefe280 | 1936 | { |
153b0682 | 1937 | /* If the size is non-standard, say what it is if we can use |
1938 | GDB extensions. */ | |
1939 | ||
1940 | if (use_gnu_debug_info_extensions | |
1941 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
1942 | { | |
d0de818d | 1943 | stabstr_S ("@s"); |
1944 | stabstr_D (TYPE_PRECISION (type)); | |
1945 | stabstr_C (';'); | |
153b0682 | 1946 | } |
1947 | ||
a9538d68 | 1948 | dbxout_range_type (type, low, high); |
1eefe280 | 1949 | } |
155b05dc | 1950 | |
1951 | else | |
1eefe280 | 1952 | { |
155b05dc | 1953 | /* If the size is non-standard, say what it is if we can use |
1954 | GDB extensions. */ | |
1955 | ||
1956 | if (use_gnu_debug_info_extensions | |
1957 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
d4b87fe5 | 1958 | { |
d0de818d | 1959 | stabstr_S ("@s"); |
1960 | stabstr_D (TYPE_PRECISION (type)); | |
1961 | stabstr_C (';'); | |
d4b87fe5 | 1962 | } |
155b05dc | 1963 | |
a9538d68 | 1964 | if (print_int_cst_bounds_in_octal_p (type, low, high)) |
155b05dc | 1965 | { |
d0de818d | 1966 | stabstr_C ('r'); |
bdeba923 | 1967 | |
1968 | /* If this type derives from another type, output type index of | |
1969 | parent type. This is particularly important when parent type | |
1970 | is an enumerated type, because not generating the parent type | |
1971 | index would transform the definition of this enumerated type | |
1972 | into a plain unsigned type. */ | |
1973 | if (TREE_TYPE (type) != 0) | |
1974 | dbxout_type_index (TREE_TYPE (type)); | |
1975 | else | |
1976 | dbxout_type_index (type); | |
1977 | ||
d0de818d | 1978 | stabstr_C (';'); |
a9538d68 | 1979 | stabstr_O (low); |
d0de818d | 1980 | stabstr_C (';'); |
a9538d68 | 1981 | stabstr_O (high); |
d0de818d | 1982 | stabstr_C (';'); |
155b05dc | 1983 | } |
1984 | ||
1985 | else | |
1986 | /* Output other integer types as subranges of `int'. */ | |
a9538d68 | 1987 | dbxout_range_type (type, low, high); |
1eefe280 | 1988 | } |
155b05dc | 1989 | |
946754ae | 1990 | break; |
1991 | ||
1992 | case REAL_TYPE: | |
06f0b99c | 1993 | case FIXED_POINT_TYPE: |
946754ae | 1994 | /* This used to say `r1' and we used to take care |
1995 | to make sure that `int' was type number 1. */ | |
d0de818d | 1996 | stabstr_C ('r'); |
54ae7e56 | 1997 | dbxout_type_index (integer_type_node); |
d0de818d | 1998 | stabstr_C (';'); |
1999 | stabstr_D (int_size_in_bytes (type)); | |
2000 | stabstr_S (";0;"); | |
946754ae | 2001 | break; |
2002 | ||
f4267b6f | 2003 | case BOOLEAN_TYPE: |
2004 | if (use_gnu_debug_info_extensions) | |
4d3a9616 | 2005 | { |
d0de818d | 2006 | stabstr_S ("@s"); |
2007 | stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type)); | |
2008 | stabstr_S (";-16;"); | |
4d3a9616 | 2009 | } |
f4267b6f | 2010 | else /* Define as enumeral type (False, True) */ |
d0de818d | 2011 | stabstr_S ("eFalse:0,True:1,;"); |
b264b33c | 2012 | break; |
2013 | ||
b264b33c | 2014 | case COMPLEX_TYPE: |
6b6cb0d6 | 2015 | /* Differs from the REAL_TYPE by its new data type number. |
2016 | R3 is NF_COMPLEX. We don't try to use any of the other NF_* | |
2017 | codes since gdb doesn't care anyway. */ | |
b264b33c | 2018 | |
2019 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) | |
2020 | { | |
d0de818d | 2021 | stabstr_S ("R3;"); |
2022 | stabstr_D (2 * int_size_in_bytes (TREE_TYPE (type))); | |
2023 | stabstr_S (";0;"); | |
c99df4b3 | 2024 | } |
2025 | else | |
2026 | { | |
2027 | /* Output a complex integer type as a structure, | |
2028 | pending some other way to do it. */ | |
d0de818d | 2029 | stabstr_C ('s'); |
2030 | stabstr_D (int_size_in_bytes (type)); | |
d4b87fe5 | 2031 | |
d0de818d | 2032 | stabstr_S ("real:"); |
9aa97f08 | 2033 | dbxout_type (TREE_TYPE (type), 0); |
d0de818d | 2034 | stabstr_S (",0,"); |
2035 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2036 | ||
2037 | stabstr_S (";imag:"); | |
9aa97f08 | 2038 | dbxout_type (TREE_TYPE (type), 0); |
d0de818d | 2039 | stabstr_C (','); |
2040 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2041 | stabstr_C (','); | |
2042 | stabstr_D (TYPE_PRECISION (TREE_TYPE (type))); | |
2043 | stabstr_S (";;"); | |
c99df4b3 | 2044 | } |
b264b33c | 2045 | break; |
2046 | ||
946754ae | 2047 | case ARRAY_TYPE: |
1020180f | 2048 | /* Make arrays of packed bits look like bitstrings for chill. */ |
2049 | if (TYPE_PACKED (type) && use_gnu_debug_info_extensions) | |
2050 | { | |
d0de818d | 2051 | stabstr_S ("@s"); |
2052 | stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type)); | |
2053 | stabstr_S (";@S;S"); | |
9aa97f08 | 2054 | dbxout_type (TYPE_DOMAIN (type), 0); |
1020180f | 2055 | break; |
2056 | } | |
d4b87fe5 | 2057 | |
946754ae | 2058 | /* Output "a" followed by a range type definition |
2059 | for the index type of the array | |
2060 | followed by a reference to the target-type. | |
bf503a12 | 2061 | ar1;0;N;M for a C array of type M and size N+1. */ |
11aea978 | 2062 | /* Check if a character string type, which in Chill is |
a92771b8 | 2063 | different from an array of characters. */ |
11aea978 | 2064 | if (TYPE_STRING_FLAG (type) && use_gnu_debug_info_extensions) |
2065 | { | |
d0de818d | 2066 | stabstr_S ("@S;"); |
11aea978 | 2067 | } |
bf503a12 | 2068 | tem = TYPE_DOMAIN (type); |
2069 | if (tem == NULL) | |
54ae7e56 | 2070 | { |
d0de818d | 2071 | stabstr_S ("ar"); |
54ae7e56 | 2072 | dbxout_type_index (integer_type_node); |
d0de818d | 2073 | stabstr_S (";0;-1;"); |
54ae7e56 | 2074 | } |
bf503a12 | 2075 | else |
2076 | { | |
d0de818d | 2077 | stabstr_C ('a'); |
a9538d68 | 2078 | dbxout_range_type (tem, TYPE_MIN_VALUE (tem), TYPE_MAX_VALUE (tem)); |
bf503a12 | 2079 | } |
d4b87fe5 | 2080 | |
9aa97f08 | 2081 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2082 | break; |
2083 | ||
48cee64c | 2084 | case VECTOR_TYPE: |
2085 | /* Make vectors look like an array. */ | |
2086 | if (use_gnu_debug_info_extensions) | |
2087 | stabstr_S ("@V;"); | |
2088 | ||
2089 | /* Output "a" followed by a range type definition | |
2090 | for the index type of the array | |
2091 | followed by a reference to the target-type. | |
2092 | ar1;0;N;M for a C array of type M and size N+1. */ | |
2093 | stabstr_C ('a'); | |
2094 | dbxout_range_type (integer_type_node, size_zero_node, | |
2095 | size_int (TYPE_VECTOR_SUBPARTS (type) - 1)); | |
2096 | ||
2097 | dbxout_type (TREE_TYPE (type), 0); | |
2098 | break; | |
2099 | ||
946754ae | 2100 | case RECORD_TYPE: |
2101 | case UNION_TYPE: | |
7f8a347a | 2102 | case QUAL_UNION_TYPE: |
946754ae | 2103 | { |
f6cc6a08 | 2104 | tree binfo = TYPE_BINFO (type); |
946754ae | 2105 | |
5c579180 | 2106 | /* Output a structure type. We must use the same test here as we |
2107 | use in the DBX_NO_XREFS case above. */ | |
439c05a0 | 2108 | if ((TYPE_NAME (type) != 0 |
2109 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
2110 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
2111 | && !full) | |
4b72716d | 2112 | || !COMPLETE_TYPE_P (type) |
d0bcb1eb | 2113 | /* No way in DBX fmt to describe a variable size. */ |
e913b5cd | 2114 | || ! tree_fits_uhwi_p (TYPE_SIZE (type))) |
946754ae | 2115 | { |
2116 | /* If the type is just a cross reference, output one | |
2117 | and mark the type as partially described. | |
2118 | If it later becomes defined, we will output | |
2119 | its real definition. | |
2120 | If the type has a name, don't nest its definition within | |
2121 | another type's definition; instead, output an xref | |
2122 | and let the definition come when the name is defined. */ | |
d0de818d | 2123 | stabstr_S ((TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu"); |
48dcce25 | 2124 | if (TYPE_IDENTIFIER (type)) |
2125 | { | |
2126 | /* Note that the C frontend creates for anonymous variable | |
2127 | length records/unions TYPE_NAME with DECL_NAME NULL. */ | |
2128 | dbxout_type_name (type); | |
2129 | } | |
c61d074f | 2130 | else |
d4b87fe5 | 2131 | { |
d0de818d | 2132 | stabstr_S ("$$"); |
2133 | stabstr_D (anonymous_type_number++); | |
d4b87fe5 | 2134 | } |
2135 | ||
d0de818d | 2136 | stabstr_C (':'); |
54ae7e56 | 2137 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
946754ae | 2138 | break; |
2139 | } | |
946754ae | 2140 | |
946754ae | 2141 | /* Identify record or union, and print its size. */ |
d0de818d | 2142 | stabstr_C ((TREE_CODE (type) == RECORD_TYPE) ? 's' : 'u'); |
2143 | stabstr_D (int_size_in_bytes (type)); | |
946754ae | 2144 | |
f6cc6a08 | 2145 | if (binfo) |
946754ae | 2146 | { |
f6cc6a08 | 2147 | int i; |
2148 | tree child; | |
f1f41a6c | 2149 | vec<tree, va_gc> *accesses = BINFO_BASE_ACCESSES (binfo); |
48e1416a | 2150 | |
9cdc08c6 | 2151 | if (use_gnu_debug_info_extensions) |
946754ae | 2152 | { |
f6cc6a08 | 2153 | if (BINFO_N_BASE_BINFOS (binfo)) |
2154 | { | |
d0de818d | 2155 | stabstr_C ('!'); |
2156 | stabstr_U (BINFO_N_BASE_BINFOS (binfo)); | |
2157 | stabstr_C (','); | |
f6cc6a08 | 2158 | } |
946754ae | 2159 | } |
f6cc6a08 | 2160 | for (i = 0; BINFO_BASE_ITERATE (binfo, i, child); i++) |
946754ae | 2161 | { |
f1f41a6c | 2162 | tree access = (accesses ? (*accesses)[i] : access_public_node); |
f6cc6a08 | 2163 | |
2164 | if (use_gnu_debug_info_extensions) | |
2165 | { | |
d0de818d | 2166 | stabstr_C (BINFO_VIRTUAL_P (child) ? '1' : '0'); |
2167 | stabstr_C (access == access_public_node ? '2' : | |
2168 | access == access_protected_node | |
2169 | ? '1' :'0'); | |
f6cc6a08 | 2170 | if (BINFO_VIRTUAL_P (child) |
3a4a2292 | 2171 | && (lang_GNU_CXX () |
9e564f0b | 2172 | || strcmp (lang_hooks.name, "GNU Objective-C++") == 0)) |
f6cc6a08 | 2173 | /* For a virtual base, print the (negative) |
2174 | offset within the vtable where we must look | |
2175 | to find the necessary adjustment. */ | |
d0de818d | 2176 | stabstr_D |
e913b5cd | 2177 | (tree_to_shwi (BINFO_VPTR_FIELD (child)) |
f6cc6a08 | 2178 | * BITS_PER_UNIT); |
2179 | else | |
e913b5cd | 2180 | stabstr_D (tree_to_shwi (BINFO_OFFSET (child)) |
d0de818d | 2181 | * BITS_PER_UNIT); |
2182 | stabstr_C (','); | |
f6cc6a08 | 2183 | dbxout_type (BINFO_TYPE (child), 0); |
d0de818d | 2184 | stabstr_C (';'); |
f6cc6a08 | 2185 | } |
2186 | else | |
2187 | { | |
2188 | /* Print out the base class information with | |
2189 | fields which have the same names at the types | |
2190 | they hold. */ | |
2191 | dbxout_type_name (BINFO_TYPE (child)); | |
d0de818d | 2192 | stabstr_C (':'); |
f6cc6a08 | 2193 | dbxout_type (BINFO_TYPE (child), full); |
d0de818d | 2194 | stabstr_C (','); |
e913b5cd | 2195 | stabstr_D (tree_to_shwi (BINFO_OFFSET (child)) |
d0de818d | 2196 | * BITS_PER_UNIT); |
2197 | stabstr_C (','); | |
2198 | stabstr_D | |
e913b5cd | 2199 | (tree_to_shwi (TYPE_SIZE (BINFO_TYPE (child))) |
f6cc6a08 | 2200 | * BITS_PER_UNIT); |
d0de818d | 2201 | stabstr_C (';'); |
f6cc6a08 | 2202 | } |
946754ae | 2203 | } |
2204 | } | |
2205 | } | |
2206 | ||
946754ae | 2207 | /* Write out the field declarations. */ |
2208 | dbxout_type_fields (type); | |
9cdc08c6 | 2209 | if (use_gnu_debug_info_extensions && TYPE_METHODS (type) != NULL_TREE) |
946754ae | 2210 | { |
946754ae | 2211 | dbxout_type_methods (type); |
2212 | } | |
5d844ba2 | 2213 | |
d0de818d | 2214 | stabstr_C (';'); |
946754ae | 2215 | |
9cdc08c6 | 2216 | if (use_gnu_debug_info_extensions && TREE_CODE (type) == RECORD_TYPE |
946754ae | 2217 | /* Avoid the ~ if we don't really need it--it confuses dbx. */ |
2218 | && TYPE_VFIELD (type)) | |
2219 | { | |
946754ae | 2220 | |
946754ae | 2221 | /* We need to write out info about what field this class |
2222 | uses as its "main" vtable pointer field, because if this | |
2223 | field is inherited from a base class, GDB cannot necessarily | |
2224 | figure out which field it's using in time. */ | |
d0de818d | 2225 | stabstr_S ("~%"); |
2226 | dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0); | |
2227 | stabstr_C (';'); | |
946754ae | 2228 | } |
2229 | break; | |
2230 | ||
2231 | case ENUMERAL_TYPE: | |
5c579180 | 2232 | /* We must use the same test here as we use in the DBX_NO_XREFS case |
2233 | above. We simplify it a bit since an enum will never have a variable | |
2234 | size. */ | |
2235 | if ((TYPE_NAME (type) != 0 | |
2236 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
2237 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
2238 | && !full) | |
4b72716d | 2239 | || !COMPLETE_TYPE_P (type)) |
946754ae | 2240 | { |
d0de818d | 2241 | stabstr_S ("xe"); |
946754ae | 2242 | dbxout_type_name (type); |
54ae7e56 | 2243 | typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF; |
d0de818d | 2244 | stabstr_C (':'); |
946754ae | 2245 | return; |
2246 | } | |
1b99826f | 2247 | if (use_gnu_debug_info_extensions |
2248 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) | |
d4b87fe5 | 2249 | { |
d0de818d | 2250 | stabstr_S ("@s"); |
2251 | stabstr_D (TYPE_PRECISION (type)); | |
2252 | stabstr_C (';'); | |
d4b87fe5 | 2253 | } |
2254 | ||
d0de818d | 2255 | stabstr_C ('e'); |
946754ae | 2256 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) |
2257 | { | |
3f00a6c0 | 2258 | tree value = TREE_VALUE (tem); |
2259 | ||
d0de818d | 2260 | stabstr_I (TREE_PURPOSE (tem)); |
2261 | stabstr_C (':'); | |
2262 | ||
3f00a6c0 | 2263 | if (TREE_CODE (value) == CONST_DECL) |
2264 | value = DECL_INITIAL (value); | |
2265 | ||
ddb1be65 | 2266 | if (cst_and_fits_in_hwi (value)) |
f9ae6f95 | 2267 | stabstr_D (TREE_INT_CST_LOW (value)); |
01f7da0d | 2268 | else |
3f00a6c0 | 2269 | stabstr_O (value); |
d4b87fe5 | 2270 | |
d0de818d | 2271 | stabstr_C (','); |
946754ae | 2272 | if (TREE_CHAIN (tem) != 0) |
d4b87fe5 | 2273 | CONTIN; |
946754ae | 2274 | } |
d4b87fe5 | 2275 | |
d0de818d | 2276 | stabstr_C (';'); |
946754ae | 2277 | break; |
2278 | ||
2279 | case POINTER_TYPE: | |
d0de818d | 2280 | stabstr_C ('*'); |
9aa97f08 | 2281 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2282 | break; |
2283 | ||
2284 | case METHOD_TYPE: | |
9cdc08c6 | 2285 | if (use_gnu_debug_info_extensions) |
946754ae | 2286 | { |
d0de818d | 2287 | stabstr_C ('#'); |
9aa97f08 | 2288 | |
2289 | /* Write the argument types out longhand. */ | |
2290 | dbxout_type (TYPE_METHOD_BASETYPE (type), 0); | |
d0de818d | 2291 | stabstr_C (','); |
9aa97f08 | 2292 | dbxout_type (TREE_TYPE (type), 0); |
2293 | dbxout_args (TYPE_ARG_TYPES (type)); | |
d0de818d | 2294 | stabstr_C (';'); |
946754ae | 2295 | } |
2296 | else | |
d4b87fe5 | 2297 | /* Treat it as a function type. */ |
2298 | dbxout_type (TREE_TYPE (type), 0); | |
946754ae | 2299 | break; |
2300 | ||
2301 | case OFFSET_TYPE: | |
9cdc08c6 | 2302 | if (use_gnu_debug_info_extensions) |
946754ae | 2303 | { |
d0de818d | 2304 | stabstr_C ('@'); |
9aa97f08 | 2305 | dbxout_type (TYPE_OFFSET_BASETYPE (type), 0); |
d0de818d | 2306 | stabstr_C (','); |
9aa97f08 | 2307 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2308 | } |
2309 | else | |
d4b87fe5 | 2310 | /* Should print as an int, because it is really just an offset. */ |
2311 | dbxout_type (integer_type_node, 0); | |
946754ae | 2312 | break; |
2313 | ||
2314 | case REFERENCE_TYPE: | |
9cdc08c6 | 2315 | if (use_gnu_debug_info_extensions) |
d0de818d | 2316 | { |
d0de818d | 2317 | stabstr_C ('&'); |
2318 | } | |
2319 | else | |
2320 | stabstr_C ('*'); | |
9aa97f08 | 2321 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2322 | break; |
2323 | ||
2324 | case FUNCTION_TYPE: | |
d0de818d | 2325 | stabstr_C ('f'); |
9aa97f08 | 2326 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2327 | break; |
2328 | ||
058a1b7a | 2329 | case POINTER_BOUNDS_TYPE: |
2330 | /* No debug info for pointer bounds type supported yet. */ | |
2331 | break; | |
2332 | ||
946754ae | 2333 | default: |
fac0decd | 2334 | /* A C++ function with deduced return type can have a TEMPLATE_TYPE_PARM |
2335 | named 'auto' in its type. | |
2336 | No debug info for TEMPLATE_TYPE_PARM type supported yet. */ | |
2337 | if (lang_GNU_CXX ()) | |
2338 | { | |
2339 | tree name = TYPE_IDENTIFIER (type); | |
2340 | if (name == get_identifier ("auto") | |
2341 | || name == get_identifier ("decltype(auto)")) | |
2342 | break; | |
2343 | } | |
2344 | ||
7bd4f6b6 | 2345 | gcc_unreachable (); |
946754ae | 2346 | } |
2347 | } | |
2348 | ||
7ef5b942 | 2349 | /* Return nonzero if the given type represents an integer whose bounds |
0989224f | 2350 | should be printed in octal format. */ |
2351 | ||
2352 | static bool | |
a9538d68 | 2353 | print_int_cst_bounds_in_octal_p (tree type, tree low, tree high) |
0989224f | 2354 | { |
2355 | /* If we can use GDB extensions and the size is wider than a long | |
2356 | (the size used by GDB to read them) or we may have trouble writing | |
2357 | the bounds the usual way, write them in octal. Note the test is for | |
2358 | the *target's* size of "long", not that of the host. The host test | |
2359 | is just to make sure we can write it out in case the host wide int | |
2360 | is narrower than the target "long". | |
8ec3a57b | 2361 | |
0989224f | 2362 | For unsigned types, we use octal if they are the same size or larger. |
2363 | This is because we print the bounds as signed decimal, and hence they | |
2364 | can't span same size unsigned types. */ | |
2365 | ||
2366 | if (use_gnu_debug_info_extensions | |
a9538d68 | 2367 | && low && TREE_CODE (low) == INTEGER_CST |
2368 | && high && TREE_CODE (high) == INTEGER_CST | |
0989224f | 2369 | && (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node) |
2370 | || ((TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node)) | |
78a8ed03 | 2371 | && TYPE_UNSIGNED (type)) |
0989224f | 2372 | || TYPE_PRECISION (type) > HOST_BITS_PER_WIDE_INT |
2373 | || (TYPE_PRECISION (type) == HOST_BITS_PER_WIDE_INT | |
78a8ed03 | 2374 | && TYPE_UNSIGNED (type)))) |
0989224f | 2375 | return TRUE; |
2376 | else | |
2377 | return FALSE; | |
2378 | } | |
2379 | ||
946754ae | 2380 | /* Output the name of type TYPE, with no punctuation. |
2381 | Such names can be set up either by typedef declarations | |
2382 | or by struct, enum and union tags. */ | |
2383 | ||
2384 | static void | |
8ec3a57b | 2385 | dbxout_type_name (tree type) |
946754ae | 2386 | { |
7bd4f6b6 | 2387 | tree t = TYPE_NAME (type); |
48e1416a | 2388 | |
7bd4f6b6 | 2389 | gcc_assert (t); |
2390 | switch (TREE_CODE (t)) | |
946754ae | 2391 | { |
7bd4f6b6 | 2392 | case IDENTIFIER_NODE: |
2393 | break; | |
2394 | case TYPE_DECL: | |
2395 | t = DECL_NAME (t); | |
2396 | break; | |
2397 | default: | |
2398 | gcc_unreachable (); | |
946754ae | 2399 | } |
946754ae | 2400 | |
d0de818d | 2401 | stabstr_I (t); |
946754ae | 2402 | } |
d251e975 | 2403 | |
47ae02b7 | 2404 | /* Output leading struct or class names needed for qualifying type |
2405 | whose scope is limited to a struct or class. */ | |
d251e975 | 2406 | |
2407 | static void | |
8ec3a57b | 2408 | dbxout_class_name_qualifiers (tree decl) |
d251e975 | 2409 | { |
2410 | tree context = decl_type_context (decl); | |
2411 | ||
8ec3a57b | 2412 | if (context != NULL_TREE |
9af5ce0c | 2413 | && TREE_CODE (context) == RECORD_TYPE |
8ec3a57b | 2414 | && TYPE_NAME (context) != 0 |
d251e975 | 2415 | && (TREE_CODE (TYPE_NAME (context)) == IDENTIFIER_NODE |
2416 | || (DECL_NAME (TYPE_NAME (context)) != 0))) | |
2417 | { | |
2418 | tree name = TYPE_NAME (context); | |
2419 | ||
2420 | if (TREE_CODE (name) == TYPE_DECL) | |
2421 | { | |
2422 | dbxout_class_name_qualifiers (name); | |
2423 | name = DECL_NAME (name); | |
2424 | } | |
d0de818d | 2425 | stabstr_I (name); |
2426 | stabstr_S ("::"); | |
d251e975 | 2427 | } |
2428 | } | |
946754ae | 2429 | \f |
be770f90 | 2430 | /* This is a specialized subset of expand_expr for use by dbxout_symbol in |
2431 | evaluating DECL_VALUE_EXPR. In particular, we stop if we find decls that | |
f0b5f617 | 2432 | haven't been expanded, or if the expression is getting so complex we won't |
be770f90 | 2433 | be able to represent it in stabs anyway. Returns NULL on failure. */ |
2434 | ||
2435 | static rtx | |
2436 | dbxout_expand_expr (tree expr) | |
2437 | { | |
2438 | switch (TREE_CODE (expr)) | |
2439 | { | |
2440 | case VAR_DECL: | |
e845094d | 2441 | /* We can't handle emulated tls variables, because the address is an |
2442 | offset to the return value of __emutls_get_address, and there is no | |
2443 | way to express that in stabs. Also, there are name mangling issues | |
2444 | here. We end up with references to undefined symbols if we don't | |
2445 | disable debug info for these variables. */ | |
2446 | if (!targetm.have_tls && DECL_THREAD_LOCAL_P (expr)) | |
2447 | return NULL; | |
dc0bd85b | 2448 | if (TREE_STATIC (expr) |
2449 | && !TREE_ASM_WRITTEN (expr) | |
2450 | && !DECL_HAS_VALUE_EXPR_P (expr) | |
2451 | && !TREE_PUBLIC (expr) | |
2452 | && DECL_RTL_SET_P (expr) | |
2453 | && MEM_P (DECL_RTL (expr))) | |
2454 | { | |
2455 | /* If this is a var that might not be actually output, | |
2456 | return NULL, otherwise stabs might reference an undefined | |
2457 | symbol. */ | |
97221fd7 | 2458 | varpool_node *node = varpool_node::get (expr); |
02774f2d | 2459 | if (!node || !node->definition) |
dc0bd85b | 2460 | return NULL; |
2461 | } | |
e845094d | 2462 | /* FALLTHRU */ |
2463 | ||
be770f90 | 2464 | case PARM_DECL: |
4d5b4e6a | 2465 | case RESULT_DECL: |
be770f90 | 2466 | if (DECL_HAS_VALUE_EXPR_P (expr)) |
2467 | return dbxout_expand_expr (DECL_VALUE_EXPR (expr)); | |
2468 | /* FALLTHRU */ | |
2469 | ||
2470 | case CONST_DECL: | |
be770f90 | 2471 | return DECL_RTL_IF_SET (expr); |
2472 | ||
2473 | case INTEGER_CST: | |
2474 | return expand_expr (expr, NULL_RTX, VOIDmode, EXPAND_INITIALIZER); | |
2475 | ||
2476 | case COMPONENT_REF: | |
2477 | case ARRAY_REF: | |
2478 | case ARRAY_RANGE_REF: | |
2479 | case BIT_FIELD_REF: | |
2480 | { | |
3754d046 | 2481 | machine_mode mode; |
be770f90 | 2482 | HOST_WIDE_INT bitsize, bitpos; |
2483 | tree offset, tem; | |
292237f3 | 2484 | int unsignedp, reversep, volatilep = 0; |
be770f90 | 2485 | rtx x; |
2486 | ||
292237f3 | 2487 | tem = get_inner_reference (expr, &bitsize, &bitpos, &offset, &mode, |
2488 | &unsignedp, &reversep, &volatilep, true); | |
be770f90 | 2489 | |
2490 | x = dbxout_expand_expr (tem); | |
2491 | if (x == NULL || !MEM_P (x)) | |
2492 | return NULL; | |
2493 | if (offset != NULL) | |
2494 | { | |
e913b5cd | 2495 | if (!tree_fits_shwi_p (offset)) |
be770f90 | 2496 | return NULL; |
e913b5cd | 2497 | x = adjust_address_nv (x, mode, tree_to_shwi (offset)); |
be770f90 | 2498 | } |
2499 | if (bitpos != 0) | |
2500 | x = adjust_address_nv (x, mode, bitpos / BITS_PER_UNIT); | |
2501 | ||
2502 | return x; | |
2503 | } | |
2504 | ||
2505 | default: | |
2506 | return NULL; | |
2507 | } | |
2508 | } | |
2509 | ||
c8c04e0d | 2510 | /* Helper function for output_used_types. Queue one entry from the |
2511 | used types hash to be output. */ | |
2512 | ||
8f359205 | 2513 | bool |
2514 | output_used_types_helper (tree const &type, vec<tree> *types_p) | |
c8c04e0d | 2515 | { |
c8c04e0d | 2516 | if ((TREE_CODE (type) == RECORD_TYPE |
2517 | || TREE_CODE (type) == UNION_TYPE | |
2518 | || TREE_CODE (type) == QUAL_UNION_TYPE | |
2519 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
2520 | && TYPE_STUB_DECL (type) | |
2521 | && DECL_P (TYPE_STUB_DECL (type)) | |
2522 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (type))) | |
f1f41a6c | 2523 | types_p->quick_push (TYPE_STUB_DECL (type)); |
c8c04e0d | 2524 | else if (TYPE_NAME (type) |
2525 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
f1f41a6c | 2526 | types_p->quick_push (TYPE_NAME (type)); |
c8c04e0d | 2527 | |
8f359205 | 2528 | return true; |
c8c04e0d | 2529 | } |
2530 | ||
c32222a3 | 2531 | /* This is a qsort callback which sorts types and declarations into a |
2532 | predictable order (types, then declarations, sorted by UID | |
2533 | within). */ | |
2534 | ||
18247eca | 2535 | static int |
2536 | output_types_sort (const void *pa, const void *pb) | |
2537 | { | |
2538 | const tree lhs = *((const tree *)pa); | |
2539 | const tree rhs = *((const tree *)pb); | |
2540 | ||
2541 | if (TYPE_P (lhs)) | |
2542 | { | |
2543 | if (TYPE_P (rhs)) | |
2544 | return TYPE_UID (lhs) - TYPE_UID (rhs); | |
2545 | else | |
2546 | return 1; | |
2547 | } | |
2548 | else | |
2549 | { | |
2550 | if (TYPE_P (rhs)) | |
2551 | return -1; | |
2552 | else | |
2553 | return DECL_UID (lhs) - DECL_UID (rhs); | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | ||
c8c04e0d | 2558 | /* Force all types used by this function to be output in debug |
2559 | information. */ | |
c32222a3 | 2560 | |
c8c04e0d | 2561 | static void |
2562 | output_used_types (void) | |
2563 | { | |
2564 | if (cfun && cfun->used_types_hash) | |
18247eca | 2565 | { |
f1f41a6c | 2566 | vec<tree> types; |
18247eca | 2567 | int i; |
2568 | tree type; | |
2569 | ||
8f359205 | 2570 | types.create (cfun->used_types_hash->elements ()); |
2571 | cfun->used_types_hash->traverse<vec<tree> *, output_used_types_helper> | |
2572 | (&types); | |
18247eca | 2573 | |
2574 | /* Sort by UID to prevent dependence on hash table ordering. */ | |
f1f41a6c | 2575 | types.qsort (output_types_sort); |
18247eca | 2576 | |
f1f41a6c | 2577 | FOR_EACH_VEC_ELT (types, i, type) |
18247eca | 2578 | debug_queue_symbol (type); |
c32222a3 | 2579 | |
f1f41a6c | 2580 | types.release (); |
18247eca | 2581 | } |
c8c04e0d | 2582 | } |
2583 | ||
946754ae | 2584 | /* Output a .stabs for the symbol defined by DECL, |
2585 | which must be a ..._DECL node in the normal namespace. | |
2586 | It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL. | |
d0309f39 | 2587 | LOCAL is nonzero if the scope is less than the entire file. |
2588 | Return 1 if a stabs might have been emitted. */ | |
946754ae | 2589 | |
d0309f39 | 2590 | int |
8ec3a57b | 2591 | dbxout_symbol (tree decl, int local ATTRIBUTE_UNUSED) |
946754ae | 2592 | { |
946754ae | 2593 | tree type = TREE_TYPE (decl); |
2594 | tree context = NULL_TREE; | |
d0309f39 | 2595 | int result = 0; |
50a7abc5 | 2596 | rtx decl_rtl; |
946754ae | 2597 | |
262444a6 | 2598 | /* "Intercept" dbxout_symbol() calls like we do all debug_hooks. */ |
2599 | ++debug_nesting; | |
2600 | ||
946754ae | 2601 | /* Ignore nameless syms, but don't ignore type tags. */ |
2602 | ||
2603 | if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL) | |
2604 | || DECL_IGNORED_P (decl)) | |
262444a6 | 2605 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
2606 | ||
d01481af | 2607 | /* If we are to generate only the symbols actually used then such |
06b27565 | 2608 | symbol nodes are flagged with TREE_USED. Ignore any that |
f0b5f617 | 2609 | aren't flagged as TREE_USED. */ |
8ec3a57b | 2610 | |
73ae3ef7 | 2611 | if (flag_debug_only_used_symbols |
2612 | && (!TREE_USED (decl) | |
2613 | && (TREE_CODE (decl) != VAR_DECL || !DECL_INITIAL (decl)))) | |
2614 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2615 | ||
2616 | /* If dbxout_init has not yet run, queue this symbol for later. */ | |
2617 | if (!typevec) | |
2618 | { | |
2619 | preinit_symbols = tree_cons (0, decl, preinit_symbols); | |
2620 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2621 | } | |
2622 | ||
262444a6 | 2623 | if (flag_debug_only_used_symbols) |
2624 | { | |
2625 | tree t; | |
2626 | ||
262444a6 | 2627 | /* We now have a used symbol. We need to generate the info for |
2628 | the symbol's type in addition to the symbol itself. These | |
2629 | type symbols are queued to be generated after were done with | |
d0de818d | 2630 | the symbol itself (otherwise they would fight over the |
2631 | stabstr obstack). | |
262444a6 | 2632 | |
2633 | Note, because the TREE_TYPE(type) might be something like a | |
2634 | pointer to a named type we need to look for the first name | |
2635 | we see following the TREE_TYPE chain. */ | |
2636 | ||
8ec3a57b | 2637 | t = type; |
262444a6 | 2638 | while (POINTER_TYPE_P (t)) |
2639 | t = TREE_TYPE (t); | |
2640 | ||
2641 | /* RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, and ENUMERAL_TYPE | |
2642 | need special treatment. The TYPE_STUB_DECL field in these | |
2643 | types generally represents the tag name type we want to | |
2644 | output. In addition there could be a typedef type with | |
2645 | a different name. In that case we also want to output | |
2646 | that. */ | |
2647 | ||
4f51d5ad | 2648 | if (TREE_CODE (t) == RECORD_TYPE |
262444a6 | 2649 | || TREE_CODE (t) == UNION_TYPE |
2650 | || TREE_CODE (t) == QUAL_UNION_TYPE | |
2651 | || TREE_CODE (t) == ENUMERAL_TYPE) | |
262444a6 | 2652 | { |
4f51d5ad | 2653 | if (TYPE_STUB_DECL (t) |
2654 | && TYPE_STUB_DECL (t) != decl | |
2655 | && DECL_P (TYPE_STUB_DECL (t)) | |
2656 | && ! DECL_IGNORED_P (TYPE_STUB_DECL (t))) | |
2657 | { | |
2658 | debug_queue_symbol (TYPE_STUB_DECL (t)); | |
2659 | if (TYPE_NAME (t) | |
2660 | && TYPE_NAME (t) != TYPE_STUB_DECL (t) | |
2661 | && TYPE_NAME (t) != decl | |
2662 | && DECL_P (TYPE_NAME (t))) | |
2663 | debug_queue_symbol (TYPE_NAME (t)); | |
2664 | } | |
2665 | } | |
262444a6 | 2666 | else if (TYPE_NAME (t) |
2667 | && TYPE_NAME (t) != decl | |
ce45a448 | 2668 | && DECL_P (TYPE_NAME (t))) |
262444a6 | 2669 | debug_queue_symbol (TYPE_NAME (t)); |
2670 | } | |
946754ae | 2671 | |
51cec339 | 2672 | emit_pending_bincls_if_required (); |
2673 | ||
946754ae | 2674 | switch (TREE_CODE (decl)) |
2675 | { | |
2676 | case CONST_DECL: | |
2677 | /* Enum values are defined by defining the enum type. */ | |
2678 | break; | |
2679 | ||
2680 | case FUNCTION_DECL: | |
50a7abc5 | 2681 | decl_rtl = DECL_RTL_IF_SET (decl); |
2682 | if (!decl_rtl) | |
262444a6 | 2683 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
8fc7a3d0 | 2684 | if (DECL_EXTERNAL (decl)) |
946754ae | 2685 | break; |
2686 | /* Don't mention a nested function under its parent. */ | |
2687 | context = decl_function_context (decl); | |
2688 | if (context == current_function_decl) | |
2689 | break; | |
402946c1 | 2690 | /* Don't mention an inline instance of a nested function. */ |
2691 | if (context && DECL_FROM_INLINE (decl)) | |
2692 | break; | |
50a7abc5 | 2693 | if (!MEM_P (decl_rtl) |
2694 | || GET_CODE (XEXP (decl_rtl, 0)) != SYMBOL_REF) | |
946754ae | 2695 | break; |
946754ae | 2696 | |
c8c04e0d | 2697 | if (flag_debug_only_used_symbols) |
2698 | output_used_types (); | |
2699 | ||
d0de818d | 2700 | dbxout_begin_complex_stabs (); |
2701 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
2702 | stabstr_S (TREE_PUBLIC (decl) ? ":F" : ":f"); | |
d0309f39 | 2703 | result = 1; |
946754ae | 2704 | |
946754ae | 2705 | if (TREE_TYPE (type)) |
9aa97f08 | 2706 | dbxout_type (TREE_TYPE (type), 0); |
946754ae | 2707 | else |
9aa97f08 | 2708 | dbxout_type (void_type_node, 0); |
946754ae | 2709 | |
2710 | /* For a nested function, when that function is compiled, | |
2711 | mention the containing function name | |
2712 | as well as (since dbx wants it) our own assembler-name. */ | |
2713 | if (context != 0) | |
d0de818d | 2714 | { |
2715 | stabstr_C (','); | |
2716 | stabstr_I (DECL_ASSEMBLER_NAME (decl)); | |
2717 | stabstr_C (','); | |
2718 | stabstr_I (DECL_NAME (context)); | |
2719 | } | |
946754ae | 2720 | |
50a7abc5 | 2721 | dbxout_finish_complex_stabs (decl, N_FUN, XEXP (decl_rtl, 0), 0, 0); |
946754ae | 2722 | break; |
2723 | ||
2724 | case TYPE_DECL: | |
946754ae | 2725 | /* Don't output the same typedef twice. |
2726 | And don't output what language-specific stuff doesn't want output. */ | |
53aaa4b2 | 2727 | if (TREE_ASM_WRITTEN (decl) || TYPE_DECL_SUPPRESS_DEBUG (decl)) |
262444a6 | 2728 | DBXOUT_DECR_NESTING_AND_RETURN (0); |
946754ae | 2729 | |
73ae3ef7 | 2730 | /* Don't output typedefs for types with magic type numbers (XCOFF). */ |
2731 | #ifdef DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER | |
2732 | { | |
2733 | int fundamental_type_number = | |
2734 | DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER (decl); | |
2735 | ||
2736 | if (fundamental_type_number != 0) | |
2737 | { | |
2738 | TREE_ASM_WRITTEN (decl) = 1; | |
2739 | TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl)) = fundamental_type_number; | |
2740 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2741 | } | |
2742 | } | |
2743 | #endif | |
946754ae | 2744 | FORCE_TEXT; |
d0309f39 | 2745 | result = 1; |
1ecd86ea | 2746 | { |
2747 | int tag_needed = 1; | |
d78a5beb | 2748 | int did_output = 0; |
ef01e856 | 2749 | |
1ecd86ea | 2750 | if (DECL_NAME (decl)) |
2751 | { | |
2752 | /* Nonzero means we must output a tag as well as a typedef. */ | |
2753 | tag_needed = 0; | |
946754ae | 2754 | |
068adc53 | 2755 | /* Handle the case of a C++ structure or union |
2756 | where the TYPE_NAME is a TYPE_DECL | |
2757 | which gives both a typedef name and a tag. */ | |
2be77840 | 2758 | /* dbx requires the tag first and the typedef second. */ |
068adc53 | 2759 | if ((TREE_CODE (type) == RECORD_TYPE |
7f8a347a | 2760 | || TREE_CODE (type) == UNION_TYPE |
2761 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
068adc53 | 2762 | && TYPE_NAME (type) == decl |
04cb9ecc | 2763 | && !use_gnu_debug_info_extensions |
2be77840 | 2764 | && !TREE_ASM_WRITTEN (TYPE_NAME (type)) |
2765 | /* Distinguish the implicit typedefs of C++ | |
2766 | from explicit ones that might be found in C. */ | |
1eefe280 | 2767 | && DECL_ARTIFICIAL (decl) |
262444a6 | 2768 | /* Do not generate a tag for incomplete records. */ |
2769 | && COMPLETE_TYPE_P (type) | |
79433a4c | 2770 | /* Do not generate a tag for records of variable size, |
2771 | since this type can not be properly described in the | |
2772 | DBX format, and it confuses some tools such as objdump. */ | |
e913b5cd | 2773 | && tree_fits_uhwi_p (TYPE_SIZE (type))) |
068adc53 | 2774 | { |
48dcce25 | 2775 | tree name = TYPE_IDENTIFIER (type); |
068adc53 | 2776 | |
d0de818d | 2777 | dbxout_begin_complex_stabs (); |
2778 | stabstr_I (name); | |
2779 | stabstr_S (":T"); | |
9aa97f08 | 2780 | dbxout_type (type, 1); |
d0de818d | 2781 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, |
2782 | 0, 0, 0); | |
068adc53 | 2783 | } |
2784 | ||
d0de818d | 2785 | dbxout_begin_complex_stabs (); |
d251e975 | 2786 | |
04cb9ecc | 2787 | /* Output leading class/struct qualifiers. */ |
d251e975 | 2788 | if (use_gnu_debug_info_extensions) |
d0de818d | 2789 | dbxout_class_name_qualifiers (decl); |
d251e975 | 2790 | |
1ecd86ea | 2791 | /* Output typedef name. */ |
d0de818d | 2792 | stabstr_I (DECL_NAME (decl)); |
2793 | stabstr_C (':'); | |
ef01e856 | 2794 | |
1ecd86ea | 2795 | /* Short cut way to output a tag also. */ |
2796 | if ((TREE_CODE (type) == RECORD_TYPE | |
7f8a347a | 2797 | || TREE_CODE (type) == UNION_TYPE |
2798 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
3e5c6b4e | 2799 | && TYPE_NAME (type) == decl |
2800 | /* Distinguish the implicit typedefs of C++ | |
2801 | from explicit ones that might be found in C. */ | |
1eefe280 | 2802 | && DECL_ARTIFICIAL (decl)) |
1ecd86ea | 2803 | { |
04cb9ecc | 2804 | if (use_gnu_debug_info_extensions) |
1ecd86ea | 2805 | { |
d0de818d | 2806 | stabstr_C ('T'); |
1ecd86ea | 2807 | TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1; |
2808 | } | |
1ecd86ea | 2809 | } |
946754ae | 2810 | |
d0de818d | 2811 | stabstr_C ('t'); |
9aa97f08 | 2812 | dbxout_type (type, 1); |
d0de818d | 2813 | dbxout_finish_complex_stabs (decl, DBX_TYPE_DECL_STABS_CODE, |
2814 | 0, 0, 0); | |
d78a5beb | 2815 | did_output = 1; |
1ecd86ea | 2816 | } |
946754ae | 2817 | |
79433a4c | 2818 | /* Don't output a tag if this is an incomplete type. This prevents |
2819 | the sun4 Sun OS 4.x dbx from crashing. */ | |
dc891f3f | 2820 | |
06ce1380 | 2821 | if (tag_needed && TYPE_NAME (type) != 0 |
2822 | && (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE | |
2823 | || (DECL_NAME (TYPE_NAME (type)) != 0)) | |
4b72716d | 2824 | && COMPLETE_TYPE_P (type) |
1ecd86ea | 2825 | && !TREE_ASM_WRITTEN (TYPE_NAME (type))) |
2826 | { | |
2827 | /* For a TYPE_DECL with no name, but the type has a name, | |
2828 | output a tag. | |
2829 | This is what represents `struct foo' with no typedef. */ | |
2830 | /* In C++, the name of a type is the corresponding typedef. | |
2831 | In C, it is an IDENTIFIER_NODE. */ | |
48dcce25 | 2832 | tree name = TYPE_IDENTIFIER (type); |
1ecd86ea | 2833 | |
d0de818d | 2834 | dbxout_begin_complex_stabs (); |
2835 | stabstr_I (name); | |
2836 | stabstr_S (":T"); | |
9aa97f08 | 2837 | dbxout_type (type, 1); |
d0de818d | 2838 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, 0, 0, 0); |
d78a5beb | 2839 | did_output = 1; |
2840 | } | |
2841 | ||
d0de818d | 2842 | /* If an enum type has no name, it cannot be referred to, but |
2843 | we must output it anyway, to record the enumeration | |
2844 | constants. */ | |
2845 | ||
d78a5beb | 2846 | if (!did_output && TREE_CODE (type) == ENUMERAL_TYPE) |
2847 | { | |
d0de818d | 2848 | dbxout_begin_complex_stabs (); |
04c6b571 | 2849 | /* Some debuggers fail when given NULL names, so give this a |
d0de818d | 2850 | harmless name of " " (Why not "(anon)"?). */ |
2851 | stabstr_S (" :T"); | |
9aa97f08 | 2852 | dbxout_type (type, 1); |
d0de818d | 2853 | dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE, 0, 0, 0); |
1ecd86ea | 2854 | } |
2855 | ||
2856 | /* Prevent duplicate output of a typedef. */ | |
2857 | TREE_ASM_WRITTEN (decl) = 1; | |
2858 | break; | |
2859 | } | |
946754ae | 2860 | |
2861 | case PARM_DECL: | |
75f6aa15 | 2862 | if (DECL_HAS_VALUE_EXPR_P (decl)) |
2863 | decl = DECL_VALUE_EXPR (decl); | |
2864 | ||
2865 | /* PARM_DECLs go in their own separate chain and are output by | |
2866 | dbxout_reg_parms and dbxout_parms, except for those that are | |
2867 | disguised VAR_DECLs like Out parameters in Ada. */ | |
2868 | gcc_assert (TREE_CODE (decl) == VAR_DECL); | |
2869 | ||
2870 | /* ... fall through ... */ | |
946754ae | 2871 | |
2872 | case RESULT_DECL: | |
946754ae | 2873 | case VAR_DECL: |
946754ae | 2874 | /* Don't mention a variable that is external. |
2875 | Let the file that defines it describe it. */ | |
8fc7a3d0 | 2876 | if (DECL_EXTERNAL (decl)) |
946754ae | 2877 | break; |
2878 | ||
2879 | /* If the variable is really a constant | |
d0de818d | 2880 | and not written in memory, inform the debugger. |
2881 | ||
2882 | ??? Why do we skip emitting the type and location in this case? */ | |
946754ae | 2883 | if (TREE_STATIC (decl) && TREE_READONLY (decl) |
2884 | && DECL_INITIAL (decl) != 0 | |
e913b5cd | 2885 | && tree_fits_shwi_p (DECL_INITIAL (decl)) |
946754ae | 2886 | && ! TREE_ASM_WRITTEN (decl) |
a495b38a | 2887 | && (DECL_FILE_SCOPE_P (decl) |
901f0910 | 2888 | || TREE_CODE (DECL_CONTEXT (decl)) == BLOCK |
2889 | || TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
d0de818d | 2890 | && TREE_PUBLIC (decl) == 0) |
946754ae | 2891 | { |
d0de818d | 2892 | /* The sun4 assembler does not grok this. */ |
5d844ba2 | 2893 | |
d0de818d | 2894 | if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE |
2895 | || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE) | |
2896 | { | |
8c53c46c | 2897 | HOST_WIDE_INT ival = tree_to_shwi (DECL_INITIAL (decl)); |
d0de818d | 2898 | |
2899 | dbxout_begin_complex_stabs (); | |
901f0910 | 2900 | dbxout_symbol_name (decl, NULL, 'c'); |
2901 | stabstr_S ("=i"); | |
d0de818d | 2902 | stabstr_D (ival); |
2903 | dbxout_finish_complex_stabs (0, N_LSYM, 0, 0, 0); | |
2904 | DBXOUT_DECR_NESTING; | |
2905 | return 1; | |
946754ae | 2906 | } |
d0de818d | 2907 | else |
2908 | break; | |
946754ae | 2909 | } |
d0de818d | 2910 | /* else it is something we handle like a normal variable. */ |
946754ae | 2911 | |
901f0910 | 2912 | decl_rtl = dbxout_expand_expr (decl); |
2913 | if (!decl_rtl) | |
2914 | DBXOUT_DECR_NESTING_AND_RETURN (0); | |
2915 | ||
cc1bb56d | 2916 | if (!is_global_var (decl)) |
2917 | decl_rtl = eliminate_regs (decl_rtl, VOIDmode, NULL_RTX); | |
946754ae | 2918 | #ifdef LEAF_REG_REMAP |
d5bf7b64 | 2919 | if (crtl->uses_only_leaf_regs) |
50a7abc5 | 2920 | leaf_renumber_regs_insn (decl_rtl); |
946754ae | 2921 | #endif |
2922 | ||
50a7abc5 | 2923 | result = dbxout_symbol_location (decl, type, 0, decl_rtl); |
0dbd1c74 | 2924 | break; |
1eefe280 | 2925 | |
0dbd1c74 | 2926 | default: |
2927 | break; | |
3c5d2a1c | 2928 | } |
262444a6 | 2929 | DBXOUT_DECR_NESTING; |
d0309f39 | 2930 | return result; |
3c5d2a1c | 2931 | } |
2932 | \f | |
2933 | /* Output the stab for DECL, a VAR_DECL, RESULT_DECL or PARM_DECL. | |
2934 | Add SUFFIX to its name, if SUFFIX is not 0. | |
2935 | Describe the variable as residing in HOME | |
d0309f39 | 2936 | (usually HOME is DECL_RTL (DECL), but not always). |
2937 | Returns 1 if the stab was really emitted. */ | |
3c5d2a1c | 2938 | |
d0309f39 | 2939 | static int |
8ec3a57b | 2940 | dbxout_symbol_location (tree decl, tree type, const char *suffix, rtx home) |
3c5d2a1c | 2941 | { |
2942 | int letter = 0; | |
c1e61953 | 2943 | stab_code_type code; |
d0de818d | 2944 | rtx addr = 0; |
2945 | int number = 0; | |
3c5d2a1c | 2946 | int regno = -1; |
946754ae | 2947 | |
3c5d2a1c | 2948 | /* Don't mention a variable at all |
2949 | if it was completely optimized into nothingness. | |
1eefe280 | 2950 | |
9e042f31 | 2951 | If the decl was from an inline function, then its rtl |
3c5d2a1c | 2952 | is not identically the rtl that was used in this |
2953 | particular compilation. */ | |
aa6a7ab3 | 2954 | if (GET_CODE (home) == SUBREG) |
3c5d2a1c | 2955 | { |
2956 | rtx value = home; | |
701e46d0 | 2957 | |
3c5d2a1c | 2958 | while (GET_CODE (value) == SUBREG) |
701e46d0 | 2959 | value = SUBREG_REG (value); |
8ad4c111 | 2960 | if (REG_P (value)) |
946754ae | 2961 | { |
701e46d0 | 2962 | if (REGNO (value) >= FIRST_PSEUDO_REGISTER) |
d0309f39 | 2963 | return 0; |
946754ae | 2964 | } |
c6a6cdaa | 2965 | home = alter_subreg (&home, true); |
aa6a7ab3 | 2966 | } |
8ad4c111 | 2967 | if (REG_P (home)) |
aa6a7ab3 | 2968 | { |
2969 | regno = REGNO (home); | |
2970 | if (regno >= FIRST_PSEUDO_REGISTER) | |
2971 | return 0; | |
3c5d2a1c | 2972 | } |
2973 | ||
2974 | /* The kind-of-variable letter depends on where | |
2975 | the variable is and on the scope of its name: | |
2976 | G and N_GSYM for static storage and global scope, | |
2977 | S for static storage and file scope, | |
2978 | V for static storage and local scope, | |
2979 | for those two, use N_LCSYM if data is in bss segment, | |
2980 | N_STSYM if in data segment, N_FUN otherwise. | |
2981 | (We used N_FUN originally, then changed to N_STSYM | |
2982 | to please GDB. However, it seems that confused ld. | |
2983 | Now GDB has been fixed to like N_FUN, says Kingdon.) | |
2984 | no letter at all, and N_LSYM, for auto variable, | |
2985 | r and N_RSYM for register variable. */ | |
2986 | ||
d0de818d | 2987 | if (MEM_P (home) && GET_CODE (XEXP (home, 0)) == SYMBOL_REF) |
3c5d2a1c | 2988 | { |
2989 | if (TREE_PUBLIC (decl)) | |
946754ae | 2990 | { |
a12691f0 | 2991 | int offs; |
3c5d2a1c | 2992 | letter = 'G'; |
d0de818d | 2993 | code = N_GSYM; |
a12691f0 | 2994 | if (NULL != dbxout_common_check (decl, &offs)) |
2995 | { | |
2996 | letter = 'V'; | |
2997 | addr = 0; | |
2998 | number = offs; | |
2999 | } | |
946754ae | 3000 | } |
3c5d2a1c | 3001 | else |
946754ae | 3002 | { |
d0de818d | 3003 | addr = XEXP (home, 0); |
946754ae | 3004 | |
3c5d2a1c | 3005 | letter = decl_function_context (decl) ? 'V' : 'S'; |
946754ae | 3006 | |
a607ffb1 | 3007 | /* Some ports can transform a symbol ref into a label ref, |
3008 | because the symbol ref is too far away and has to be | |
3009 | dumped into a constant pool. Alternatively, the symbol | |
3010 | in the constant pool might be referenced by a different | |
3011 | symbol. */ | |
3012 | if (GET_CODE (addr) == SYMBOL_REF | |
3013 | && CONSTANT_POOL_ADDRESS_P (addr)) | |
3014 | { | |
3015 | bool marked; | |
3016 | rtx tmp = get_pool_constant_mark (addr, &marked); | |
3017 | ||
3018 | if (GET_CODE (tmp) == SYMBOL_REF) | |
3019 | { | |
3020 | addr = tmp; | |
3021 | if (CONSTANT_POOL_ADDRESS_P (addr)) | |
3022 | get_pool_constant_mark (addr, &marked); | |
3023 | else | |
3024 | marked = true; | |
3025 | } | |
3026 | else if (GET_CODE (tmp) == LABEL_REF) | |
3027 | { | |
3028 | addr = tmp; | |
3029 | marked = true; | |
3030 | } | |
3031 | ||
3032 | /* If all references to the constant pool were optimized | |
3033 | out, we just ignore the symbol. */ | |
3034 | if (!marked) | |
3035 | return 0; | |
3036 | } | |
3037 | ||
2def70a8 | 3038 | /* This should be the same condition as in assemble_variable, but |
3039 | we don't have access to dont_output_data here. So, instead, | |
3040 | we rely on the fact that error_mark_node initializers always | |
3041 | end up in bss for C++ and never end up in bss for C. */ | |
3042 | if (DECL_INITIAL (decl) == 0 | |
3a4a2292 | 3043 | || (lang_GNU_CXX () |
2def70a8 | 3044 | && DECL_INITIAL (decl) == error_mark_node)) |
a12691f0 | 3045 | { |
3046 | int offs; | |
3047 | code = N_LCSYM; | |
3048 | if (NULL != dbxout_common_check (decl, &offs)) | |
3049 | { | |
3050 | addr = 0; | |
3051 | number = offs; | |
3052 | letter = 'V'; | |
3053 | code = N_GSYM; | |
3054 | } | |
3055 | } | |
bcfbda84 | 3056 | else if (DECL_IN_TEXT_SECTION (decl)) |
3c5d2a1c | 3057 | /* This is not quite right, but it's the closest |
3058 | of all the codes that Unix defines. */ | |
d0de818d | 3059 | code = DBX_STATIC_CONST_VAR_CODE; |
3c5d2a1c | 3060 | else |
3061 | { | |
3062 | /* Ultrix `as' seems to need this. */ | |
946754ae | 3063 | #ifdef DBX_STATIC_STAB_DATA_SECTION |
2f14b1f9 | 3064 | switch_to_section (data_section); |
946754ae | 3065 | #endif |
d0de818d | 3066 | code = N_STSYM; |
946754ae | 3067 | } |
3068 | } | |
3c5d2a1c | 3069 | } |
3070 | else if (regno >= 0) | |
3071 | { | |
3072 | letter = 'r'; | |
d0de818d | 3073 | code = N_RSYM; |
3074 | number = DBX_REGISTER_NUMBER (regno); | |
3c5d2a1c | 3075 | } |
e16ceb8e | 3076 | else if (MEM_P (home) |
3077 | && (MEM_P (XEXP (home, 0)) | |
8ad4c111 | 3078 | || (REG_P (XEXP (home, 0)) |
bca4bea0 | 3079 | && REGNO (XEXP (home, 0)) != HARD_FRAME_POINTER_REGNUM |
3080 | && REGNO (XEXP (home, 0)) != STACK_POINTER_REGNUM | |
5ae82d58 | 3081 | #if !HARD_FRAME_POINTER_IS_ARG_POINTER |
bca4bea0 | 3082 | && REGNO (XEXP (home, 0)) != ARG_POINTER_REGNUM |
3083 | #endif | |
3084 | ))) | |
3c5d2a1c | 3085 | /* If the value is indirect by memory or by a register |
3086 | that isn't the frame pointer | |
3087 | then it means the object is variable-sized and address through | |
3088 | that register or stack slot. DBX has no way to represent this | |
3089 | so all we can do is output the variable as a pointer. | |
4ee9c684 | 3090 | If it's not a parameter, ignore it. */ |
3c5d2a1c | 3091 | { |
8ad4c111 | 3092 | if (REG_P (XEXP (home, 0))) |
946754ae | 3093 | { |
3094 | letter = 'r'; | |
d0de818d | 3095 | code = N_RSYM; |
756ab748 | 3096 | if (REGNO (XEXP (home, 0)) >= FIRST_PSEUDO_REGISTER) |
3097 | return 0; | |
d0de818d | 3098 | number = DBX_REGISTER_NUMBER (REGNO (XEXP (home, 0))); |
946754ae | 3099 | } |
3c5d2a1c | 3100 | else |
946754ae | 3101 | { |
d0de818d | 3102 | code = N_LSYM; |
3c5d2a1c | 3103 | /* RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))). |
946754ae | 3104 | We want the value of that CONST_INT. */ |
d0de818d | 3105 | number = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (home, 0), 0)); |
439c05a0 | 3106 | } |
3c5d2a1c | 3107 | |
3108 | /* Effectively do build_pointer_type, but don't cache this type, | |
3109 | since it might be temporary whereas the type it points to | |
3110 | might have been saved for inlining. */ | |
3111 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
3112 | type = make_node (POINTER_TYPE); | |
3113 | TREE_TYPE (type) = TREE_TYPE (decl); | |
3114 | } | |
e16ceb8e | 3115 | else if (MEM_P (home) |
8ad4c111 | 3116 | && REG_P (XEXP (home, 0))) |
3c5d2a1c | 3117 | { |
d0de818d | 3118 | code = N_LSYM; |
3119 | number = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); | |
3c5d2a1c | 3120 | } |
e16ceb8e | 3121 | else if (MEM_P (home) |
3c5d2a1c | 3122 | && GET_CODE (XEXP (home, 0)) == PLUS |
971ba038 | 3123 | && CONST_INT_P (XEXP (XEXP (home, 0), 1))) |
3c5d2a1c | 3124 | { |
d0de818d | 3125 | code = N_LSYM; |
3c5d2a1c | 3126 | /* RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
3127 | We want the value of that CONST_INT. */ | |
d0de818d | 3128 | number = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); |
3c5d2a1c | 3129 | } |
e16ceb8e | 3130 | else if (MEM_P (home) |
3c5d2a1c | 3131 | && GET_CODE (XEXP (home, 0)) == CONST) |
3132 | { | |
3133 | /* Handle an obscure case which can arise when optimizing and | |
3134 | when there are few available registers. (This is *always* | |
3135 | the case for i386/i486 targets). The RTL looks like | |
3136 | (MEM (CONST ...)) even though this variable is a local `auto' | |
3137 | or a local `register' variable. In effect, what has happened | |
3138 | is that the reload pass has seen that all assignments and | |
3139 | references for one such a local variable can be replaced by | |
3140 | equivalent assignments and references to some static storage | |
3141 | variable, thereby avoiding the need for a register. In such | |
3142 | cases we're forced to lie to debuggers and tell them that | |
3143 | this variable was itself `static'. */ | |
a12691f0 | 3144 | int offs; |
d0de818d | 3145 | code = N_LCSYM; |
3c5d2a1c | 3146 | letter = 'V'; |
a12691f0 | 3147 | if (NULL == dbxout_common_check (decl, &offs)) |
3148 | addr = XEXP (XEXP (home, 0), 0); | |
3149 | else | |
3150 | { | |
3151 | addr = 0; | |
3152 | number = offs; | |
3153 | code = N_GSYM; | |
3154 | } | |
3c5d2a1c | 3155 | } |
3156 | else if (GET_CODE (home) == CONCAT) | |
3157 | { | |
1ae99fd2 | 3158 | tree subtype; |
3159 | ||
3160 | /* If TYPE is not a COMPLEX_TYPE (it might be a RECORD_TYPE, | |
3161 | for example), then there is no easy way to figure out | |
3162 | what SUBTYPE should be. So, we give up. */ | |
3163 | if (TREE_CODE (type) != COMPLEX_TYPE) | |
3164 | return 0; | |
3165 | ||
3166 | subtype = TREE_TYPE (type); | |
3c5d2a1c | 3167 | |
3168 | /* If the variable's storage is in two parts, | |
3169 | output each as a separate stab with a modified name. */ | |
3170 | if (WORDS_BIG_ENDIAN) | |
3171 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 0)); | |
946754ae | 3172 | else |
3c5d2a1c | 3173 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 0)); |
946754ae | 3174 | |
3c5d2a1c | 3175 | if (WORDS_BIG_ENDIAN) |
3176 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 1)); | |
3177 | else | |
3178 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 1)); | |
d0309f39 | 3179 | return 1; |
3c5d2a1c | 3180 | } |
3181 | else | |
3182 | /* Address might be a MEM, when DECL is a variable-sized object. | |
3183 | Or it might be const0_rtx, meaning previous passes | |
3184 | want us to ignore this variable. */ | |
d0309f39 | 3185 | return 0; |
3c5d2a1c | 3186 | |
3187 | /* Ok, start a symtab entry and output the variable name. */ | |
8a2df6f8 | 3188 | emit_pending_bincls_if_required (); |
3189 | FORCE_TEXT; | |
439c05a0 | 3190 | |
3191 | #ifdef DBX_STATIC_BLOCK_START | |
d0de818d | 3192 | DBX_STATIC_BLOCK_START (asm_out_file, code); |
439c05a0 | 3193 | #endif |
3194 | ||
8a2df6f8 | 3195 | dbxout_begin_complex_stabs_noforcetext (); |
3c5d2a1c | 3196 | dbxout_symbol_name (decl, suffix, letter); |
9aa97f08 | 3197 | dbxout_type (type, 0); |
d0de818d | 3198 | dbxout_finish_complex_stabs (decl, code, addr, 0, number); |
439c05a0 | 3199 | |
3200 | #ifdef DBX_STATIC_BLOCK_END | |
d0de818d | 3201 | DBX_STATIC_BLOCK_END (asm_out_file, code); |
439c05a0 | 3202 | #endif |
d0309f39 | 3203 | return 1; |
3c5d2a1c | 3204 | } |
3205 | \f | |
3206 | /* Output the symbol name of DECL for a stabs, with suffix SUFFIX. | |
3207 | Then output LETTER to indicate the kind of location the symbol has. */ | |
3208 | ||
3209 | static void | |
8ec3a57b | 3210 | dbxout_symbol_name (tree decl, const char *suffix, int letter) |
3c5d2a1c | 3211 | { |
d0de818d | 3212 | tree name; |
b82967bc | 3213 | |
48e1416a | 3214 | if (DECL_CONTEXT (decl) |
cd3034ab | 3215 | && (TYPE_P (DECL_CONTEXT (decl)) |
3216 | || TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL)) | |
3217 | /* One slight hitch: if this is a VAR_DECL which is a class member | |
3218 | or a namespace member, we must put out the mangled name instead of the | |
b82967bc | 3219 | DECL_NAME. Note also that static member (variable) names DO NOT begin |
3220 | with underscores in .stabs directives. */ | |
d0de818d | 3221 | name = DECL_ASSEMBLER_NAME (decl); |
b82967bc | 3222 | else |
3223 | /* ...but if we're function-local, we don't want to include the junk | |
3224 | added by ASM_FORMAT_PRIVATE_NAME. */ | |
d0de818d | 3225 | name = DECL_NAME (decl); |
b82967bc | 3226 | |
d0de818d | 3227 | if (name) |
3228 | stabstr_I (name); | |
3229 | else | |
3230 | stabstr_S ("(anon)"); | |
3c5d2a1c | 3231 | |
d0de818d | 3232 | if (suffix) |
3233 | stabstr_S (suffix); | |
3234 | stabstr_C (':'); | |
d4b87fe5 | 3235 | if (letter) |
d0de818d | 3236 | stabstr_C (letter); |
946754ae | 3237 | } |
3238 | ||
a12691f0 | 3239 | |
3240 | /* Output the common block name for DECL in a stabs. | |
3241 | ||
3242 | Symbols in global common (.comm) get wrapped with an N_BCOMM/N_ECOMM pair | |
3243 | around each group of symbols in the same .comm area. The N_GSYM stabs | |
3244 | that are emitted only contain the offset in the common area. This routine | |
3245 | emits the N_BCOMM and N_ECOMM stabs. */ | |
3246 | ||
3247 | static void | |
c1e61953 | 3248 | dbxout_common_name (tree decl, const char *name, stab_code_type op) |
a12691f0 | 3249 | { |
3250 | dbxout_begin_complex_stabs (); | |
3251 | stabstr_S (name); | |
3252 | dbxout_finish_complex_stabs (decl, op, NULL_RTX, NULL, 0); | |
3253 | } | |
3254 | ||
3255 | /* Check decl to determine whether it is a VAR_DECL destined for storage in a | |
3256 | common area. If it is, the return value will be a non-null string giving | |
3257 | the name of the common storage block it will go into. If non-null, the | |
3258 | value is the offset into the common block for that symbol's storage. */ | |
3259 | ||
3260 | static const char * | |
3261 | dbxout_common_check (tree decl, int *value) | |
3262 | { | |
3263 | rtx home; | |
3264 | rtx sym_addr; | |
3265 | const char *name = NULL; | |
48e1416a | 3266 | |
e4eb345d | 3267 | /* If the decl isn't a VAR_DECL, or if it isn't static, or if |
a12691f0 | 3268 | it does not have a value (the offset into the common area), or if it |
3269 | is thread local (as opposed to global) then it isn't common, and shouldn't | |
3270 | be handled as such. | |
48e1416a | 3271 | |
a12691f0 | 3272 | ??? DECL_THREAD_LOCAL_P check prevents problems with improper .stabs |
3273 | for thread-local symbols. Can be handled via same mechanism as used | |
3274 | in dwarf2out.c. */ | |
3275 | if (TREE_CODE (decl) != VAR_DECL | |
9af5ce0c | 3276 | || !TREE_STATIC (decl) |
3277 | || !DECL_HAS_VALUE_EXPR_P (decl) | |
a12691f0 | 3278 | || DECL_THREAD_LOCAL_P (decl) |
3279 | || !is_fortran ()) | |
3280 | return NULL; | |
3281 | ||
48e1416a | 3282 | home = DECL_RTL (decl); |
a12691f0 | 3283 | if (home == NULL_RTX || GET_CODE (home) != MEM) |
3284 | return NULL; | |
3285 | ||
3286 | sym_addr = dbxout_expand_expr (DECL_VALUE_EXPR (decl)); | |
3287 | if (sym_addr == NULL_RTX || GET_CODE (sym_addr) != MEM) | |
3288 | return NULL; | |
3289 | ||
3290 | sym_addr = XEXP (sym_addr, 0); | |
3291 | if (GET_CODE (sym_addr) == CONST) | |
3292 | sym_addr = XEXP (sym_addr, 0); | |
3293 | if ((GET_CODE (sym_addr) == SYMBOL_REF || GET_CODE (sym_addr) == PLUS) | |
3294 | && DECL_INITIAL (decl) == 0) | |
3295 | { | |
3296 | ||
3297 | /* We have a sym that will go into a common area, meaning that it | |
3298 | will get storage reserved with a .comm/.lcomm assembler pseudo-op. | |
3299 | ||
3300 | Determine name of common area this symbol will be an offset into, | |
3301 | and offset into that area. Also retrieve the decl for the area | |
3302 | that the symbol is offset into. */ | |
3303 | tree cdecl = NULL; | |
3304 | ||
3305 | switch (GET_CODE (sym_addr)) | |
3306 | { | |
3307 | case PLUS: | |
971ba038 | 3308 | if (CONST_INT_P (XEXP (sym_addr, 0))) |
a12691f0 | 3309 | { |
3310 | name = | |
9af5ce0c | 3311 | targetm.strip_name_encoding (XSTR (XEXP (sym_addr, 1), 0)); |
a12691f0 | 3312 | *value = INTVAL (XEXP (sym_addr, 0)); |
3313 | cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 1)); | |
3314 | } | |
3315 | else | |
3316 | { | |
3317 | name = | |
9af5ce0c | 3318 | targetm.strip_name_encoding (XSTR (XEXP (sym_addr, 0), 0)); |
a12691f0 | 3319 | *value = INTVAL (XEXP (sym_addr, 1)); |
3320 | cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 0)); | |
3321 | } | |
3322 | break; | |
3323 | ||
3324 | case SYMBOL_REF: | |
9af5ce0c | 3325 | name = targetm.strip_name_encoding (XSTR (sym_addr, 0)); |
a12691f0 | 3326 | *value = 0; |
3327 | cdecl = SYMBOL_REF_DECL (sym_addr); | |
3328 | break; | |
3329 | ||
3330 | default: | |
3331 | error ("common symbol debug info is not structured as " | |
3332 | "symbol+offset"); | |
3333 | } | |
3334 | ||
3335 | /* Check area common symbol is offset into. If this is not public, then | |
3336 | it is not a symbol in a common block. It must be a .lcomm symbol, not | |
3337 | a .comm symbol. */ | |
9af5ce0c | 3338 | if (cdecl == NULL || !TREE_PUBLIC (cdecl)) |
a12691f0 | 3339 | name = NULL; |
3340 | } | |
3341 | else | |
3342 | name = NULL; | |
3343 | ||
3344 | return name; | |
3345 | } | |
3346 | ||
6ef828f9 | 3347 | /* Output definitions of all the decls in a chain. Return nonzero if |
d0309f39 | 3348 | anything was output */ |
946754ae | 3349 | |
d0309f39 | 3350 | int |
8ec3a57b | 3351 | dbxout_syms (tree syms) |
946754ae | 3352 | { |
d0309f39 | 3353 | int result = 0; |
a12691f0 | 3354 | const char *comm_prev = NULL; |
3355 | tree syms_prev = NULL; | |
3356 | ||
946754ae | 3357 | while (syms) |
3358 | { | |
a12691f0 | 3359 | int temp, copen, cclos; |
3360 | const char *comm_new; | |
3361 | ||
3362 | /* Check for common symbol, and then progression into a new/different | |
3363 | block of common symbols. Emit closing/opening common bracket if | |
3364 | necessary. */ | |
3365 | comm_new = dbxout_common_check (syms, &temp); | |
3366 | copen = comm_new != NULL | |
3367 | && (comm_prev == NULL || strcmp (comm_new, comm_prev)); | |
3368 | cclos = comm_prev != NULL | |
3369 | && (comm_new == NULL || strcmp (comm_new, comm_prev)); | |
3370 | if (cclos) | |
3371 | dbxout_common_name (syms_prev, comm_prev, N_ECOMM); | |
3372 | if (copen) | |
3373 | { | |
3374 | dbxout_common_name (syms, comm_new, N_BCOMM); | |
3375 | syms_prev = syms; | |
3376 | } | |
3377 | comm_prev = comm_new; | |
3378 | ||
d0309f39 | 3379 | result += dbxout_symbol (syms, 1); |
1767a056 | 3380 | syms = DECL_CHAIN (syms); |
946754ae | 3381 | } |
a12691f0 | 3382 | |
3383 | if (comm_prev != NULL) | |
3384 | dbxout_common_name (syms_prev, comm_prev, N_ECOMM); | |
3385 | ||
d0309f39 | 3386 | return result; |
946754ae | 3387 | } |
3388 | \f | |
3389 | /* The following two functions output definitions of function parameters. | |
3390 | Each parameter gets a definition locating it in the parameter list. | |
3391 | Each parameter that is a register variable gets a second definition | |
3392 | locating it in the register. | |
3393 | ||
3394 | Printing or argument lists in gdb uses the definitions that | |
3395 | locate in the parameter list. But reference to the variable in | |
3396 | expressions uses preferentially the definition as a register. */ | |
3397 | ||
3398 | /* Output definitions, referring to storage in the parmlist, | |
3399 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
3400 | ||
439c05a0 | 3401 | void |
8ec3a57b | 3402 | dbxout_parms (tree parms) |
946754ae | 3403 | { |
262444a6 | 3404 | ++debug_nesting; |
51cec339 | 3405 | emit_pending_bincls_if_required (); |
3406 | ||
1767a056 | 3407 | for (; parms; parms = DECL_CHAIN (parms)) |
043dbdf4 | 3408 | if (DECL_NAME (parms) |
3409 | && TREE_TYPE (parms) != error_mark_node | |
3410 | && DECL_RTL_SET_P (parms) | |
3411 | && DECL_INCOMING_RTL (parms)) | |
946754ae | 3412 | { |
d0de818d | 3413 | tree eff_type; |
3414 | char letter; | |
c1e61953 | 3415 | stab_code_type code; |
d0de818d | 3416 | int number; |
946754ae | 3417 | |
3418 | /* Perform any necessary register eliminations on the parameter's rtl, | |
3419 | so that the debugging output will be accurate. */ | |
3420 | DECL_INCOMING_RTL (parms) | |
b9c74b4d | 3421 | = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX); |
3422 | SET_DECL_RTL (parms, | |
3423 | eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX)); | |
946754ae | 3424 | #ifdef LEAF_REG_REMAP |
d5bf7b64 | 3425 | if (crtl->uses_only_leaf_regs) |
946754ae | 3426 | { |
3427 | leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms)); | |
3428 | leaf_renumber_regs_insn (DECL_RTL (parms)); | |
3429 | } | |
3430 | #endif | |
3431 | ||
3432 | if (PARM_PASSED_IN_MEMORY (parms)) | |
3433 | { | |
d0de818d | 3434 | rtx inrtl = XEXP (DECL_INCOMING_RTL (parms), 0); |
946754ae | 3435 | |
3436 | /* ??? Here we assume that the parm address is indexed | |
3437 | off the frame pointer or arg pointer. | |
3438 | If that is not true, we produce meaningless results, | |
3439 | but do not crash. */ | |
d0de818d | 3440 | if (GET_CODE (inrtl) == PLUS |
971ba038 | 3441 | && CONST_INT_P (XEXP (inrtl, 1))) |
d0de818d | 3442 | number = INTVAL (XEXP (inrtl, 1)); |
946754ae | 3443 | else |
d0de818d | 3444 | number = 0; |
3445 | ||
3446 | code = N_PSYM; | |
3447 | number = DEBUGGER_ARG_OFFSET (number, inrtl); | |
3448 | letter = 'p'; | |
3449 | ||
3450 | /* It is quite tempting to use TREE_TYPE (parms) instead | |
3451 | of DECL_ARG_TYPE (parms) for the eff_type, so that gcc | |
3452 | reports the actual type of the parameter, rather than | |
3453 | the promoted type. This certainly makes GDB's life | |
3454 | easier, at least for some ports. The change is a bad | |
3455 | idea however, since GDB expects to be able access the | |
3456 | type without performing any conversions. So for | |
3457 | example, if we were passing a float to an unprototyped | |
3458 | function, gcc will store a double on the stack, but if | |
3459 | we emit a stab saying the type is a float, then gdb | |
3460 | will only read in a single value, and this will produce | |
3461 | an erroneous value. */ | |
3462 | eff_type = DECL_ARG_TYPE (parms); | |
946754ae | 3463 | } |
8ad4c111 | 3464 | else if (REG_P (DECL_RTL (parms))) |
946754ae | 3465 | { |
3466 | rtx best_rtl; | |
52eab9d6 | 3467 | |
d0de818d | 3468 | /* Parm passed in registers and lives in registers or nowhere. */ |
3469 | code = DBX_REGPARM_STABS_CODE; | |
3470 | letter = DBX_REGPARM_STABS_LETTER; | |
3471 | ||
3472 | /* For parms passed in registers, it is better to use the | |
3473 | declared type of the variable, not the type it arrived in. */ | |
3474 | eff_type = TREE_TYPE (parms); | |
3475 | ||
3476 | /* If parm lives in a register, use that register; pretend | |
3477 | the parm was passed there. It would be more consistent | |
3478 | to describe the register where the parm was passed, but | |
3479 | in practice that register usually holds something else. | |
3480 | If the parm lives nowhere, use the register where it | |
3481 | was passed. */ | |
02e7a332 | 3482 | if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
d0de818d | 3483 | best_rtl = DECL_RTL (parms); |
ab26248e | 3484 | else if (GET_CODE (DECL_INCOMING_RTL (parms)) == PARALLEL) |
3485 | best_rtl = XEXP (XVECEXP (DECL_INCOMING_RTL (parms), 0, 0), 0); | |
946754ae | 3486 | else |
d0de818d | 3487 | best_rtl = DECL_INCOMING_RTL (parms); |
946754ae | 3488 | |
d0de818d | 3489 | number = DBX_REGISTER_NUMBER (REGNO (best_rtl)); |
946754ae | 3490 | } |
e16ceb8e | 3491 | else if (MEM_P (DECL_RTL (parms)) |
8ad4c111 | 3492 | && REG_P (XEXP (DECL_RTL (parms), 0)) |
cb8b8ba0 | 3493 | && REGNO (XEXP (DECL_RTL (parms), 0)) != HARD_FRAME_POINTER_REGNUM |
3494 | && REGNO (XEXP (DECL_RTL (parms), 0)) != STACK_POINTER_REGNUM | |
5ae82d58 | 3495 | #if !HARD_FRAME_POINTER_IS_ARG_POINTER |
cb8b8ba0 | 3496 | && REGNO (XEXP (DECL_RTL (parms), 0)) != ARG_POINTER_REGNUM |
3497 | #endif | |
3498 | ) | |
f10caba4 | 3499 | { |
3500 | /* Parm was passed via invisible reference. | |
3501 | That is, its address was passed in a register. | |
3502 | Output it as if it lived in that register. | |
3503 | The debugger will know from the type | |
5ac2bc37 | 3504 | that it was actually passed by invisible reference. */ |
52cae7bf | 3505 | |
d0de818d | 3506 | code = DBX_REGPARM_STABS_CODE; |
48e1416a | 3507 | |
d0de818d | 3508 | /* GDB likes this marked with a special letter. */ |
3509 | letter = (use_gnu_debug_info_extensions | |
3510 | ? 'a' : DBX_REGPARM_STABS_LETTER); | |
3511 | eff_type = TREE_TYPE (parms); | |
f10caba4 | 3512 | |
3bf2cac3 | 3513 | /* DECL_RTL looks like (MEM (REG...). Get the register number. |
3514 | If it is an unallocated pseudo-reg, then use the register where | |
d0de818d | 3515 | it was passed instead. |
3516 | ??? Why is DBX_REGISTER_NUMBER not used here? */ | |
3bf2cac3 | 3517 | |
d0de818d | 3518 | if (REGNO (XEXP (DECL_RTL (parms), 0)) < FIRST_PSEUDO_REGISTER) |
3519 | number = REGNO (XEXP (DECL_RTL (parms), 0)); | |
f10caba4 | 3520 | else |
d0de818d | 3521 | number = REGNO (DECL_INCOMING_RTL (parms)); |
f10caba4 | 3522 | } |
e16ceb8e | 3523 | else if (MEM_P (DECL_RTL (parms)) |
3524 | && MEM_P (XEXP (DECL_RTL (parms), 0))) | |
8c03ddcf | 3525 | { |
3526 | /* Parm was passed via invisible reference, with the reference | |
3527 | living on the stack. DECL_RTL looks like | |
eed9d2f3 | 3528 | (MEM (MEM (PLUS (REG ...) (CONST_INT ...)))) or it |
3529 | could look like (MEM (MEM (REG))). */ | |
d0de818d | 3530 | |
3531 | code = N_PSYM; | |
3532 | letter = 'v'; | |
3533 | eff_type = TREE_TYPE (parms); | |
3534 | ||
3535 | if (!REG_P (XEXP (XEXP (DECL_RTL (parms), 0), 0))) | |
3536 | number = INTVAL (XEXP (XEXP (XEXP (DECL_RTL (parms), 0), 0), 1)); | |
eed9d2f3 | 3537 | else |
d0de818d | 3538 | number = 0; |
3539 | ||
3540 | number = DEBUGGER_ARG_OFFSET (number, | |
3541 | XEXP (XEXP (DECL_RTL (parms), 0), 0)); | |
8c03ddcf | 3542 | } |
e16ceb8e | 3543 | else if (MEM_P (DECL_RTL (parms)) |
4394fe52 | 3544 | && XEXP (DECL_RTL (parms), 0) != const0_rtx |
3545 | /* ??? A constant address for a parm can happen | |
3546 | when the reg it lives in is equiv to a constant in memory. | |
3547 | Should make this not happen, after 2.4. */ | |
3548 | && ! CONSTANT_P (XEXP (DECL_RTL (parms), 0))) | |
946754ae | 3549 | { |
3550 | /* Parm was passed in registers but lives on the stack. */ | |
3551 | ||
d0de818d | 3552 | code = N_PSYM; |
3553 | letter = 'p'; | |
3554 | eff_type = TREE_TYPE (parms); | |
3555 | ||
946754ae | 3556 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), |
3557 | in which case we want the value of that CONST_INT, | |
8c03ddcf | 3558 | or (MEM (REG ...)), |
946754ae | 3559 | in which case we use a value of zero. */ |
d0de818d | 3560 | if (!REG_P (XEXP (DECL_RTL (parms), 0))) |
3561 | number = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
946754ae | 3562 | else |
d0de818d | 3563 | number = 0; |
946754ae | 3564 | |
c9452941 | 3565 | /* Make a big endian correction if the mode of the type of the |
3566 | parameter is not the same as the mode of the rtl. */ | |
3567 | if (BYTES_BIG_ENDIAN | |
3568 | && TYPE_MODE (TREE_TYPE (parms)) != GET_MODE (DECL_RTL (parms)) | |
3569 | && GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms))) < UNITS_PER_WORD) | |
d0de818d | 3570 | number += (GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))) |
3571 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms)))); | |
3572 | } | |
3573 | else | |
3574 | /* ??? We don't know how to represent this argument. */ | |
3575 | continue; | |
946754ae | 3576 | |
d0de818d | 3577 | dbxout_begin_complex_stabs (); |
48e1416a | 3578 | |
d0de818d | 3579 | if (DECL_NAME (parms)) |
3580 | { | |
3581 | stabstr_I (DECL_NAME (parms)); | |
3582 | stabstr_C (':'); | |
946754ae | 3583 | } |
d0de818d | 3584 | else |
3585 | stabstr_S ("(anon):"); | |
3586 | stabstr_C (letter); | |
3587 | dbxout_type (eff_type, 0); | |
3588 | dbxout_finish_complex_stabs (parms, code, 0, 0, number); | |
946754ae | 3589 | } |
262444a6 | 3590 | DBXOUT_DECR_NESTING; |
946754ae | 3591 | } |
3592 | ||
3593 | /* Output definitions for the places where parms live during the function, | |
3594 | when different from where they were passed, when the parms were passed | |
3595 | in memory. | |
3596 | ||
3597 | It is not useful to do this for parms passed in registers | |
3598 | that live during the function in different registers, because it is | |
3599 | impossible to look in the passed register for the passed value, | |
3600 | so we use the within-the-function register to begin with. | |
3601 | ||
3602 | PARMS is a chain of PARM_DECL nodes. */ | |
3603 | ||
439c05a0 | 3604 | void |
8ec3a57b | 3605 | dbxout_reg_parms (tree parms) |
946754ae | 3606 | { |
262444a6 | 3607 | ++debug_nesting; |
3608 | ||
1767a056 | 3609 | for (; parms; parms = DECL_CHAIN (parms)) |
ae399944 | 3610 | if (DECL_NAME (parms) && PARM_PASSED_IN_MEMORY (parms)) |
946754ae | 3611 | { |
946754ae | 3612 | /* Report parms that live in registers during the function |
3613 | but were passed in memory. */ | |
8ad4c111 | 3614 | if (REG_P (DECL_RTL (parms)) |
ae399944 | 3615 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
3c5d2a1c | 3616 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3617 | 0, DECL_RTL (parms)); | |
ae399944 | 3618 | else if (GET_CODE (DECL_RTL (parms)) == CONCAT) |
3c5d2a1c | 3619 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3620 | 0, DECL_RTL (parms)); | |
946754ae | 3621 | /* Report parms that live in memory but not where they were passed. */ |
e16ceb8e | 3622 | else if (MEM_P (DECL_RTL (parms)) |
946754ae | 3623 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) |
ae399944 | 3624 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
3625 | 0, DECL_RTL (parms)); | |
946754ae | 3626 | } |
262444a6 | 3627 | DBXOUT_DECR_NESTING; |
946754ae | 3628 | } |
3629 | \f | |
3630 | /* Given a chain of ..._TYPE nodes (as come in a parameter list), | |
3631 | output definitions of those names, in raw form */ | |
3632 | ||
b29760a8 | 3633 | static void |
8ec3a57b | 3634 | dbxout_args (tree args) |
946754ae | 3635 | { |
3636 | while (args) | |
3637 | { | |
d0de818d | 3638 | stabstr_C (','); |
9aa97f08 | 3639 | dbxout_type (TREE_VALUE (args), 0); |
946754ae | 3640 | args = TREE_CHAIN (args); |
3641 | } | |
3642 | } | |
3643 | \f | |
4ceb34b9 | 3644 | #if defined (DBX_DEBUGGING_INFO) |
3645 | ||
7850c77b | 3646 | /* Subroutine of dbxout_block. Emit an N_LBRAC stab referencing LABEL. |
3647 | BEGIN_LABEL is the name of the beginning of the function, which may | |
3648 | be required. */ | |
3649 | static void | |
3650 | dbx_output_lbrac (const char *label, | |
3651 | const char *begin_label ATTRIBUTE_UNUSED) | |
3652 | { | |
d0de818d | 3653 | dbxout_begin_stabn (N_LBRAC); |
e3b8b697 | 3654 | if (DBX_BLOCKS_FUNCTION_RELATIVE) |
d0de818d | 3655 | dbxout_stab_value_label_diff (label, begin_label); |
3656 | else | |
3657 | dbxout_stab_value_label (label); | |
7850c77b | 3658 | } |
3659 | ||
3660 | /* Subroutine of dbxout_block. Emit an N_RBRAC stab referencing LABEL. | |
3661 | BEGIN_LABEL is the name of the beginning of the function, which may | |
3662 | be required. */ | |
3663 | static void | |
3664 | dbx_output_rbrac (const char *label, | |
3665 | const char *begin_label ATTRIBUTE_UNUSED) | |
3666 | { | |
d0de818d | 3667 | dbxout_begin_stabn (N_RBRAC); |
e3b8b697 | 3668 | if (DBX_BLOCKS_FUNCTION_RELATIVE) |
d0de818d | 3669 | dbxout_stab_value_label_diff (label, begin_label); |
3670 | else | |
3671 | dbxout_stab_value_label (label); | |
7850c77b | 3672 | } |
3673 | ||
946754ae | 3674 | /* Output everything about a symbol block (a BLOCK node |
3675 | that represents a scope level), | |
3676 | including recursive output of contained blocks. | |
3677 | ||
3678 | BLOCK is the BLOCK node. | |
3679 | DEPTH is its depth within containing symbol blocks. | |
3680 | ARGS is usually zero; but for the outermost block of the | |
3681 | body of a function, it is a chain of PARM_DECLs for the function parameters. | |
3682 | We output definitions of all the register parms | |
3683 | as if they were local variables of that block. | |
3684 | ||
3685 | If -g1 was used, we count blocks just the same, but output nothing | |
3686 | except for the outermost block. | |
3687 | ||
3688 | Actually, BLOCK may be several blocks chained together. | |
3689 | We handle them all in sequence. */ | |
3690 | ||
3691 | static void | |
8ec3a57b | 3692 | dbxout_block (tree block, int depth, tree args) |
946754ae | 3693 | { |
a6e8892a | 3694 | char begin_label[20]; |
3695 | /* Reference current function start using LFBB. */ | |
3696 | ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno); | |
946754ae | 3697 | |
3698 | while (block) | |
3699 | { | |
3700 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
b26d0c9e | 3701 | if (TREE_USED (block) && TREE_ASM_WRITTEN (block)) |
946754ae | 3702 | { |
a1d829f8 | 3703 | int did_output; |
7850c77b | 3704 | int blocknum = BLOCK_NUMBER (block); |
a1d829f8 | 3705 | |
d0309f39 | 3706 | /* In dbx format, the syms of a block come before the N_LBRAC. |
6312a35e | 3707 | If nothing is output, we don't need the N_LBRAC, either. */ |
a1d829f8 | 3708 | did_output = 0; |
946754ae | 3709 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) |
a1d829f8 | 3710 | did_output = dbxout_syms (BLOCK_VARS (block)); |
946754ae | 3711 | if (args) |
3712 | dbxout_reg_parms (args); | |
946754ae | 3713 | |
3714 | /* Now output an N_LBRAC symbol to represent the beginning of | |
3715 | the block. Use the block's tree-walk order to generate | |
3716 | the assembler symbols LBBn and LBEn | |
3717 | that final will define around the code in this block. */ | |
7850c77b | 3718 | if (did_output) |
946754ae | 3719 | { |
3720 | char buf[20]; | |
7850c77b | 3721 | const char *scope_start; |
3722 | ||
3723 | if (depth == 0) | |
3724 | /* The outermost block doesn't get LBB labels; use | |
a6e8892a | 3725 | the LFBB local symbol emitted by dbxout_begin_prologue. */ |
7850c77b | 3726 | scope_start = begin_label; |
3727 | else | |
3728 | { | |
3729 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum); | |
3730 | scope_start = buf; | |
3731 | } | |
946754ae | 3732 | |
7850c77b | 3733 | dbx_output_lbrac (scope_start, begin_label); |
946754ae | 3734 | } |
946754ae | 3735 | |
946754ae | 3736 | /* Output the subblocks. */ |
4303221c | 3737 | dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
946754ae | 3738 | |
3739 | /* Refer to the marker for the end of the block. */ | |
7850c77b | 3740 | if (did_output) |
946754ae | 3741 | { |
7850c77b | 3742 | char buf[100]; |
3743 | if (depth == 0) | |
3744 | /* The outermost block doesn't get LBE labels; | |
3745 | use the "scope" label which will be emitted | |
3746 | by dbxout_function_end. */ | |
3747 | ASM_GENERATE_INTERNAL_LABEL (buf, "Lscope", scope_labelno); | |
3748 | else | |
3749 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum); | |
3750 | ||
3751 | dbx_output_rbrac (buf, begin_label); | |
946754ae | 3752 | } |
3753 | } | |
3754 | block = BLOCK_CHAIN (block); | |
3755 | } | |
3756 | } | |
3757 | ||
3758 | /* Output the information about a function and its arguments and result. | |
3759 | Usually this follows the function's code, | |
3760 | but on some systems, it comes before. */ | |
3761 | ||
3762 | static void | |
8ec3a57b | 3763 | dbxout_begin_function (tree decl) |
946754ae | 3764 | { |
475c9f56 | 3765 | int saved_tree_used1; |
3766 | ||
475c9f56 | 3767 | saved_tree_used1 = TREE_USED (decl); |
262444a6 | 3768 | TREE_USED (decl) = 1; |
3769 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
3770 | { | |
8ec3a57b | 3771 | int saved_tree_used2 = TREE_USED (DECL_RESULT (decl)); |
262444a6 | 3772 | TREE_USED (DECL_RESULT (decl)) = 1; |
3773 | dbxout_symbol (decl, 0); | |
3774 | TREE_USED (DECL_RESULT (decl)) = saved_tree_used2; | |
3775 | } | |
3776 | else | |
3777 | dbxout_symbol (decl, 0); | |
3778 | TREE_USED (decl) = saved_tree_used1; | |
3779 | ||
946754ae | 3780 | dbxout_parms (DECL_ARGUMENTS (decl)); |
3781 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
3782 | dbxout_symbol (DECL_RESULT (decl), 1); | |
3783 | } | |
0c87a39e | 3784 | #endif /* DBX_DEBUGGING_INFO */ |
946754ae | 3785 | |
02da6382 | 3786 | #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */ |
573aba85 | 3787 | |
b5369b7d | 3788 | /* Record an element in the table of global destructors. SYMBOL is |
3789 | a SYMBOL_REF of the function to be called; PRIORITY is a number | |
3790 | between 0 and MAX_INIT_PRIORITY. */ | |
3791 | ||
3792 | void | |
3793 | default_stabs_asm_out_destructor (rtx symbol ATTRIBUTE_UNUSED, | |
3794 | int priority ATTRIBUTE_UNUSED) | |
3795 | { | |
3796 | #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO | |
3797 | /* Tell GNU LD that this is part of the static destructor set. | |
3798 | This will work for any system that uses stabs, most usefully | |
3799 | aout systems. */ | |
3800 | dbxout_begin_simple_stabs ("___DTOR_LIST__", 22 /* N_SETT */); | |
3801 | dbxout_stab_value_label (XSTR (symbol, 0)); | |
3802 | #else | |
3803 | sorry ("global destructors not supported on this target"); | |
3804 | #endif | |
3805 | } | |
3806 | ||
3807 | /* Likewise for global constructors. */ | |
3808 | ||
3809 | void | |
3810 | default_stabs_asm_out_constructor (rtx symbol ATTRIBUTE_UNUSED, | |
3811 | int priority ATTRIBUTE_UNUSED) | |
3812 | { | |
3813 | #if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO | |
3814 | /* Tell GNU LD that this is part of the static destructor set. | |
3815 | This will work for any system that uses stabs, most usefully | |
3816 | aout systems. */ | |
3817 | dbxout_begin_simple_stabs ("___CTOR_LIST__", 22 /* N_SETT */); | |
3818 | dbxout_stab_value_label (XSTR (symbol, 0)); | |
3819 | #else | |
3820 | sorry ("global constructors not supported on this target"); | |
3821 | #endif | |
3822 | } | |
3823 | ||
573aba85 | 3824 | #include "gt-dbxout.h" |