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a0313320 | 1 | /* Output sdb-format symbol table information from GNU compiler. |
d353bf18 | 2 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
a0313320 | 3 | |
f12b58b3 | 4 | This file is part of GCC. |
a0313320 | 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. |
a0313320 | 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. | |
a0313320 | 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/>. */ | |
a0313320 | 19 | |
20 | /* mike@tredysvr.Tredydev.Unisys.COM says: | |
21 | I modified the struct.c example and have a nm of a .o resulting from the | |
22 | AT&T C compiler. From the example below I would conclude the following: | |
23 | ||
24 | 1. All .defs from structures are emitted as scanned. The example below | |
25 | clearly shows the symbol table entries for BoxRec2 are after the first | |
26 | function. | |
27 | ||
28 | 2. All functions and their locals (including statics) are emitted as scanned. | |
29 | ||
30 | 3. All nested unnamed union and structure .defs must be emitted before | |
31 | the structure in which they are nested. The AT&T assembler is a | |
32 | one pass beast as far as symbolics are concerned. | |
33 | ||
34 | 4. All structure .defs are emitted before the typedefs that refer to them. | |
35 | ||
36 | 5. All top level static and external variable definitions are moved to the | |
4bbea254 | 37 | end of file with all top level statics occurring first before externs. |
a0313320 | 38 | |
39 | 6. All undefined references are at the end of the file. | |
40 | */ | |
41 | ||
42 | #include "config.h" | |
1f3233d1 | 43 | #include "system.h" |
805e22b2 | 44 | #include "coretypes.h" |
45 | #include "tm.h" | |
1f3233d1 | 46 | #include "debug.h" |
b20a8bb4 | 47 | #include "alias.h" |
48 | #include "symtab.h" | |
1f3233d1 | 49 | #include "tree.h" |
9ed99284 | 50 | #include "varasm.h" |
51 | #include "stor-layout.h" | |
1f3233d1 | 52 | |
53 | static GTY(()) tree anonymous_types; | |
a0313320 | 54 | |
b1bd5ac9 | 55 | /* Counter to generate unique "names" for nameless struct members. */ |
56 | ||
57 | static GTY(()) int unnamed_struct_number; | |
58 | ||
73ae3ef7 | 59 | /* Declarations whose debug info was deferred till end of compilation. */ |
60 | ||
f1f41a6c | 61 | static GTY(()) vec<tree, va_gc> *deferred_global_decls; |
73ae3ef7 | 62 | |
ec4f62a9 | 63 | /* The C front end may call sdbout_symbol before sdbout_init runs. |
64 | We save all such decls in this list and output them when we get | |
65 | to sdbout_init. */ | |
66 | ||
67 | static GTY(()) tree preinit_symbols; | |
68 | static GTY(()) bool sdbout_initialized; | |
69 | ||
a0313320 | 70 | #ifdef SDB_DEBUGGING_INFO |
71 | ||
a0313320 | 72 | #include "rtl.h" |
a0313320 | 73 | #include "regs.h" |
74 | #include "flags.h" | |
75 | #include "insn-config.h" | |
76 | #include "reload.h" | |
77d71bdb | 77 | #include "output.h" |
0b205f4c | 78 | #include "diagnostic-core.h" |
5d0e87b7 | 79 | #include "tm_p.h" |
a0313320 | 80 | #include "gsyms.h" |
20325f61 | 81 | #include "langhooks.h" |
805e22b2 | 82 | #include "target.h" |
a0313320 | 83 | |
84 | /* 1 if PARM is passed to this function in memory. */ | |
85 | ||
86 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
e16ceb8e | 87 | (MEM_P (DECL_INCOMING_RTL (PARM))) |
a0313320 | 88 | |
89 | /* A C expression for the integer offset value of an automatic variable | |
90 | (C_AUTO) having address X (an RTX). */ | |
91 | #ifndef DEBUGGER_AUTO_OFFSET | |
92 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
93 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
94 | #endif | |
95 | ||
96 | /* A C expression for the integer offset value of an argument (C_ARG) | |
97 | having address X (an RTX). The nominal offset is OFFSET. */ | |
98 | #ifndef DEBUGGER_ARG_OFFSET | |
99 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) | |
100 | #endif | |
101 | ||
102 | /* Line number of beginning of current function, minus one. | |
103 | Negative means not in a function or not using sdb. */ | |
104 | ||
56f6686b | 105 | int sdb_begin_function_line = -1; |
a0313320 | 106 | |
a0313320 | 107 | |
108 | extern FILE *asm_out_file; | |
109 | ||
110 | extern tree current_function_decl; | |
111 | ||
744d3441 | 112 | #include "sdbout.h" |
a0313320 | 113 | |
3b8f8a40 | 114 | static void sdbout_init (const char *); |
115 | static void sdbout_finish (const char *); | |
116 | static void sdbout_start_source_file (unsigned int, const char *); | |
117 | static void sdbout_end_source_file (unsigned int); | |
118 | static void sdbout_begin_block (unsigned int, unsigned int); | |
119 | static void sdbout_end_block (unsigned int, unsigned int); | |
1488fe24 | 120 | static void sdbout_source_line (unsigned int, const char *, int, bool); |
3b8f8a40 | 121 | static void sdbout_end_epilogue (unsigned int, const char *); |
3a1c9df2 | 122 | static void sdbout_early_global_decl (tree); |
123 | static void sdbout_late_global_decl (tree); | |
3b8f8a40 | 124 | static void sdbout_begin_prologue (unsigned int, const char *); |
3b8f8a40 | 125 | static void sdbout_end_prologue (unsigned int, const char *); |
126 | static void sdbout_begin_function (tree); | |
127 | static void sdbout_end_function (unsigned int); | |
128 | static void sdbout_toplevel_data (tree); | |
3352ba19 | 129 | static void sdbout_label (rtx_code_label *); |
3b8f8a40 | 130 | static char *gen_fake_label (void); |
131 | static int plain_type (tree); | |
132 | static int template_name_p (tree); | |
133 | static void sdbout_record_type_name (tree); | |
134 | static int plain_type_1 (tree, int); | |
135 | static void sdbout_block (tree); | |
136 | static void sdbout_syms (tree); | |
d8c9779c | 137 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
3b8f8a40 | 138 | static void sdbout_queue_anonymous_type (tree); |
139 | static void sdbout_dequeue_anonymous_types (void); | |
d8c9779c | 140 | #endif |
3b8f8a40 | 141 | static void sdbout_type (tree); |
142 | static void sdbout_field_types (tree); | |
143 | static void sdbout_one_type (tree); | |
144 | static void sdbout_parms (tree); | |
145 | static void sdbout_reg_parms (tree); | |
a0313320 | 146 | |
3b8f8a40 | 147 | /* Random macros describing parts of SDB data. */ |
a0313320 | 148 | |
149 | /* Default value of delimiter is ";". */ | |
150 | #ifndef SDB_DELIM | |
151 | #define SDB_DELIM ";" | |
152 | #endif | |
153 | ||
154 | /* Maximum number of dimensions the assembler will allow. */ | |
155 | #ifndef SDB_MAX_DIM | |
156 | #define SDB_MAX_DIM 4 | |
157 | #endif | |
158 | ||
159 | #ifndef PUT_SDB_SCL | |
9af5ce0c | 160 | #define PUT_SDB_SCL(a) fprintf (asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM) |
a0313320 | 161 | #endif |
162 | ||
163 | #ifndef PUT_SDB_INT_VAL | |
77d71bdb | 164 | #define PUT_SDB_INT_VAL(a) \ |
165 | do { \ | |
85aa12f7 | 166 | fprintf (asm_out_file, "\t.val\t" HOST_WIDE_INT_PRINT_DEC "%s", \ |
167 | (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
77d71bdb | 168 | } while (0) |
169 | ||
a0313320 | 170 | #endif |
171 | ||
172 | #ifndef PUT_SDB_VAL | |
173 | #define PUT_SDB_VAL(a) \ | |
174 | ( fputs ("\t.val\t", asm_out_file), \ | |
175 | output_addr_const (asm_out_file, (a)), \ | |
176 | fprintf (asm_out_file, SDB_DELIM)) | |
177 | #endif | |
178 | ||
179 | #ifndef PUT_SDB_DEF | |
180 | #define PUT_SDB_DEF(a) \ | |
181 | do { fprintf (asm_out_file, "\t.def\t"); \ | |
3b8f8a40 | 182 | assemble_name (asm_out_file, a); \ |
a0313320 | 183 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
184 | #endif | |
185 | ||
186 | #ifndef PUT_SDB_PLAIN_DEF | |
9af5ce0c | 187 | #define PUT_SDB_PLAIN_DEF(a) \ |
188 | fprintf (asm_out_file, "\t.def\t.%s%s", a, SDB_DELIM) | |
a0313320 | 189 | #endif |
190 | ||
191 | #ifndef PUT_SDB_ENDEF | |
9af5ce0c | 192 | #define PUT_SDB_ENDEF fputs ("\t.endef\n", asm_out_file) |
a0313320 | 193 | #endif |
194 | ||
195 | #ifndef PUT_SDB_TYPE | |
9af5ce0c | 196 | #define PUT_SDB_TYPE(a) fprintf (asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM) |
a0313320 | 197 | #endif |
198 | ||
199 | #ifndef PUT_SDB_SIZE | |
77d71bdb | 200 | #define PUT_SDB_SIZE(a) \ |
201 | do { \ | |
85aa12f7 | 202 | fprintf (asm_out_file, "\t.size\t" HOST_WIDE_INT_PRINT_DEC "%s", \ |
203 | (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
9af5ce0c | 204 | } while (0) |
a0313320 | 205 | #endif |
206 | ||
207 | #ifndef PUT_SDB_START_DIM | |
9af5ce0c | 208 | #define PUT_SDB_START_DIM fprintf (asm_out_file, "\t.dim\t") |
a0313320 | 209 | #endif |
210 | ||
211 | #ifndef PUT_SDB_NEXT_DIM | |
9af5ce0c | 212 | #define PUT_SDB_NEXT_DIM(a) fprintf (asm_out_file, "%d,", a) |
a0313320 | 213 | #endif |
214 | ||
215 | #ifndef PUT_SDB_LAST_DIM | |
9af5ce0c | 216 | #define PUT_SDB_LAST_DIM(a) fprintf (asm_out_file, "%d%s", a, SDB_DELIM) |
a0313320 | 217 | #endif |
218 | ||
219 | #ifndef PUT_SDB_TAG | |
220 | #define PUT_SDB_TAG(a) \ | |
221 | do { fprintf (asm_out_file, "\t.tag\t"); \ | |
3de7e2d9 | 222 | assemble_name (asm_out_file, a); \ |
a0313320 | 223 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
224 | #endif | |
225 | ||
226 | #ifndef PUT_SDB_BLOCK_START | |
227 | #define PUT_SDB_BLOCK_START(LINE) \ | |
228 | fprintf (asm_out_file, \ | |
229 | "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
230 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
231 | #endif | |
232 | ||
233 | #ifndef PUT_SDB_BLOCK_END | |
234 | #define PUT_SDB_BLOCK_END(LINE) \ | |
235 | fprintf (asm_out_file, \ | |
236 | "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
237 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
238 | #endif | |
239 | ||
240 | #ifndef PUT_SDB_FUNCTION_START | |
241 | #define PUT_SDB_FUNCTION_START(LINE) \ | |
242 | fprintf (asm_out_file, \ | |
243 | "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
244 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
245 | #endif | |
246 | ||
247 | #ifndef PUT_SDB_FUNCTION_END | |
248 | #define PUT_SDB_FUNCTION_END(LINE) \ | |
249 | fprintf (asm_out_file, \ | |
250 | "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
251 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
252 | #endif | |
253 | ||
a0313320 | 254 | /* Return the sdb tag identifier string for TYPE |
1e625a2e | 255 | if TYPE has already been defined; otherwise return a null pointer. */ |
a0313320 | 256 | |
083fba85 | 257 | #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type) |
a0313320 | 258 | |
259 | /* Set the sdb tag identifier string for TYPE to NAME. */ | |
260 | ||
261 | #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \ | |
fb80456a | 262 | TYPE_SYMTAB_POINTER (TYPE) = (const char *)(NAME) |
a0313320 | 263 | |
264 | /* Return the name (a string) of the struct, union or enum tag | |
265 | described by the TREE_LIST node LINK. This is 0 for an anonymous one. */ | |
266 | ||
267 | #define TAG_NAME(link) \ | |
268 | (((link) && TREE_PURPOSE ((link)) \ | |
269 | && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \ | |
270 | ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0) | |
271 | ||
272 | /* Ensure we don't output a negative line number. */ | |
273 | #define MAKE_LINE_SAFE(line) \ | |
27d0c333 | 274 | if ((int) line <= sdb_begin_function_line) \ |
275 | line = sdb_begin_function_line + 1 | |
33d72cae | 276 | |
c140b944 | 277 | /* The debug hooks structure. */ |
e42f6423 | 278 | const struct gcc_debug_hooks sdb_debug_hooks = |
b896d81b | 279 | { |
2b49746a | 280 | sdbout_init, /* init */ |
281 | sdbout_finish, /* finish */ | |
3a1c9df2 | 282 | debug_nothing_void, /* early_finish */ |
47306a5d | 283 | debug_nothing_void, /* assembly_start */ |
2b49746a | 284 | debug_nothing_int_charstar, /* define */ |
285 | debug_nothing_int_charstar, /* undef */ | |
286 | sdbout_start_source_file, /* start_source_file */ | |
287 | sdbout_end_source_file, /* end_source_file */ | |
288 | sdbout_begin_block, /* begin_block */ | |
289 | sdbout_end_block, /* end_block */ | |
5493cb9a | 290 | debug_true_const_tree, /* ignore_block */ |
2b49746a | 291 | sdbout_source_line, /* source_line */ |
2b49746a | 292 | sdbout_begin_prologue, /* begin_prologue */ |
293 | debug_nothing_int_charstar, /* end_prologue */ | |
cfe7b52e | 294 | debug_nothing_int_charstar, /* begin_epilogue */ |
2b49746a | 295 | sdbout_end_epilogue, /* end_epilogue */ |
296 | sdbout_begin_function, /* begin_function */ | |
297 | sdbout_end_function, /* end_function */ | |
f2023823 | 298 | debug_nothing_tree, /* register_main_translation_unit */ |
2b49746a | 299 | debug_nothing_tree, /* function_decl */ |
3a1c9df2 | 300 | sdbout_early_global_decl, /* early_global_decl */ |
301 | sdbout_late_global_decl, /* late_global_decl */ | |
14173a2c | 302 | sdbout_symbol, /* type_decl */ |
df4d540f | 303 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
2b49746a | 304 | debug_nothing_tree, /* deferred_inline_function */ |
305 | debug_nothing_tree, /* outlining_inline_function */ | |
306 | sdbout_label, /* label */ | |
5923a5e7 | 307 | debug_nothing_int, /* handle_pch */ |
3352ba19 | 308 | debug_nothing_rtx_insn, /* var_location */ |
1897b881 | 309 | debug_nothing_void, /* switch_text_section */ |
8d17cbdd | 310 | debug_nothing_tree_tree, /* set_name */ |
929d2a90 | 311 | 0, /* start_end_main_source_file */ |
312 | TYPE_SYMTAB_IS_POINTER /* tree_type_symtab_field */ | |
b896d81b | 313 | }; |
a0313320 | 314 | |
315 | /* Return a unique string to name an anonymous type. */ | |
316 | ||
317 | static char * | |
3b8f8a40 | 318 | gen_fake_label (void) |
a0313320 | 319 | { |
320 | char label[10]; | |
321 | char *labelstr; | |
2c4067e8 | 322 | sprintf (label, ".%dfake", unnamed_struct_number); |
a0313320 | 323 | unnamed_struct_number++; |
92192583 | 324 | labelstr = xstrdup (label); |
a0313320 | 325 | return labelstr; |
326 | } | |
3b8f8a40 | 327 | |
a0313320 | 328 | /* Return the number which describes TYPE for SDB. |
329 | For pointers, etc., this function is recursive. | |
330 | Each record, union or enumeral type must already have had a | |
331 | tag number output. */ | |
332 | ||
333 | /* The number is given by d6d5d4d3d2d1bbbb | |
334 | where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array. | |
335 | Thus, char *foo () has bbbb=T_CHAR | |
336 | d1=D_FCN | |
337 | d2=D_PTR | |
338 | N_BTMASK= 017 1111 basic type field. | |
339 | N_TSHIFT= 2 derived type shift | |
340 | N_BTSHFT= 4 Basic type shift */ | |
341 | ||
342 | /* Produce the number that describes a pointer, function or array type. | |
343 | PREV is the number describing the target, value or element type. | |
344 | DT_type describes how to transform that type. */ | |
c41bf978 | 345 | #define PUSH_DERIVED_LEVEL(DT_type,PREV) \ |
47c251e5 | 346 | ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \ |
347 | | ((int) DT_type << (int) N_BTSHFT) \ | |
348 | | ((PREV) & (int) N_BTMASK)) | |
a0313320 | 349 | |
350 | /* Number of elements used in sdb_dims. */ | |
351 | static int sdb_n_dims = 0; | |
352 | ||
353 | /* Table of array dimensions of current type. */ | |
354 | static int sdb_dims[SDB_MAX_DIM]; | |
355 | ||
356 | /* Size of outermost array currently being processed. */ | |
357 | static int sdb_type_size = -1; | |
358 | ||
359 | static int | |
3b8f8a40 | 360 | plain_type (tree type) |
a0313320 | 361 | { |
d4e7442d | 362 | int val = plain_type_1 (type, 0); |
a0313320 | 363 | |
364 | /* If we have already saved up some array dimensions, print them now. */ | |
365 | if (sdb_n_dims > 0) | |
366 | { | |
367 | int i; | |
368 | PUT_SDB_START_DIM; | |
369 | for (i = sdb_n_dims - 1; i > 0; i--) | |
370 | PUT_SDB_NEXT_DIM (sdb_dims[i]); | |
371 | PUT_SDB_LAST_DIM (sdb_dims[0]); | |
372 | sdb_n_dims = 0; | |
373 | ||
374 | sdb_type_size = int_size_in_bytes (type); | |
375 | /* Don't kill sdb if type is not laid out or has variable size. */ | |
376 | if (sdb_type_size < 0) | |
377 | sdb_type_size = 0; | |
378 | } | |
379 | /* If we have computed the size of an array containing this type, | |
380 | print it now. */ | |
381 | if (sdb_type_size >= 0) | |
382 | { | |
383 | PUT_SDB_SIZE (sdb_type_size); | |
384 | sdb_type_size = -1; | |
385 | } | |
386 | return val; | |
387 | } | |
388 | ||
3d95713a | 389 | static int |
3b8f8a40 | 390 | template_name_p (tree name) |
3d95713a | 391 | { |
19cb6b50 | 392 | const char *ptr = IDENTIFIER_POINTER (name); |
3d95713a | 393 | while (*ptr && *ptr != '<') |
394 | ptr++; | |
395 | ||
396 | return *ptr != '\0'; | |
397 | } | |
398 | ||
a0313320 | 399 | static void |
3b8f8a40 | 400 | sdbout_record_type_name (tree type) |
a0313320 | 401 | { |
76ab50f8 | 402 | const char *name = 0; |
a0313320 | 403 | int no_name; |
404 | ||
405 | if (KNOWN_TYPE_TAG (type)) | |
406 | return; | |
407 | ||
408 | if (TYPE_NAME (type) != 0) | |
409 | { | |
410 | tree t = 0; | |
76ab50f8 | 411 | |
a0313320 | 412 | /* Find the IDENTIFIER_NODE for the type name. */ |
413 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7d494510 | 414 | t = TYPE_NAME (type); |
581197a9 | 415 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
a0313320 | 416 | { |
417 | t = DECL_NAME (TYPE_NAME (type)); | |
3d95713a | 418 | /* The DECL_NAME for templates includes "<>", which breaks |
419 | most assemblers. Use its assembler name instead, which | |
420 | has been mangled into being safe. */ | |
421 | if (t && template_name_p (t)) | |
422 | t = DECL_ASSEMBLER_NAME (TYPE_NAME (type)); | |
a0313320 | 423 | } |
a0313320 | 424 | |
425 | /* Now get the name as a string, or invent one. */ | |
3d95713a | 426 | if (t != NULL_TREE) |
a0313320 | 427 | name = IDENTIFIER_POINTER (t); |
428 | } | |
429 | ||
430 | no_name = (name == 0 || *name == 0); | |
431 | if (no_name) | |
432 | name = gen_fake_label (); | |
433 | ||
434 | SET_KNOWN_TYPE_TAG (type, name); | |
435 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
436 | if (no_name) | |
437 | sdbout_queue_anonymous_type (type); | |
438 | #endif | |
439 | } | |
440 | ||
d4e7442d | 441 | /* Return the .type value for type TYPE. |
442 | ||
443 | LEVEL indicates how many levels deep we have recursed into the type. | |
444 | The SDB debug format can only represent 6 derived levels of types. | |
445 | After that, we must output inaccurate debug info. We deliberately | |
446 | stop before the 7th level, so that ADA recursive types will not give an | |
447 | infinite loop. */ | |
448 | ||
a0313320 | 449 | static int |
3b8f8a40 | 450 | plain_type_1 (tree type, int level) |
a0313320 | 451 | { |
452 | if (type == 0) | |
453 | type = void_type_node; | |
d4e7442d | 454 | else if (type == error_mark_node) |
a0313320 | 455 | type = integer_type_node; |
d4e7442d | 456 | else |
457 | type = TYPE_MAIN_VARIANT (type); | |
a0313320 | 458 | |
459 | switch (TREE_CODE (type)) | |
460 | { | |
461 | case VOID_TYPE: | |
fa67d8e8 | 462 | case NULLPTR_TYPE: |
a0313320 | 463 | return T_VOID; |
37e26411 | 464 | case BOOLEAN_TYPE: |
a0313320 | 465 | case INTEGER_TYPE: |
466 | { | |
467 | int size = int_size_in_bytes (type) * BITS_PER_UNIT; | |
477f73a0 | 468 | |
469 | /* Carefully distinguish all the standard types of C, | |
470 | without messing up if the language is not C. | |
471 | Note that we check only for the names that contain spaces; | |
472 | other names might occur by coincidence in other languages. */ | |
473 | if (TYPE_NAME (type) != 0 | |
474 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
475 | && DECL_NAME (TYPE_NAME (type)) != 0 | |
476 | && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE) | |
477 | { | |
0d95286f | 478 | const char *const name |
fb1f4ef4 | 479 | = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); |
477f73a0 | 480 | |
220345e0 | 481 | if (!strcmp (name, "char")) |
482 | return T_CHAR; | |
477f73a0 | 483 | if (!strcmp (name, "unsigned char")) |
484 | return T_UCHAR; | |
485 | if (!strcmp (name, "signed char")) | |
486 | return T_CHAR; | |
220345e0 | 487 | if (!strcmp (name, "int")) |
488 | return T_INT; | |
477f73a0 | 489 | if (!strcmp (name, "unsigned int")) |
490 | return T_UINT; | |
491 | if (!strcmp (name, "short int")) | |
492 | return T_SHORT; | |
493 | if (!strcmp (name, "short unsigned int")) | |
494 | return T_USHORT; | |
495 | if (!strcmp (name, "long int")) | |
496 | return T_LONG; | |
497 | if (!strcmp (name, "long unsigned int")) | |
498 | return T_ULONG; | |
499 | } | |
500 | ||
220345e0 | 501 | if (size == INT_TYPE_SIZE) |
78a8ed03 | 502 | return (TYPE_UNSIGNED (type) ? T_UINT : T_INT); |
a0313320 | 503 | if (size == CHAR_TYPE_SIZE) |
78a8ed03 | 504 | return (TYPE_UNSIGNED (type) ? T_UCHAR : T_CHAR); |
a0313320 | 505 | if (size == SHORT_TYPE_SIZE) |
78a8ed03 | 506 | return (TYPE_UNSIGNED (type) ? T_USHORT : T_SHORT); |
35ede5b0 | 507 | if (size == LONG_TYPE_SIZE) |
78a8ed03 | 508 | return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); |
2a949ded | 509 | if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */ |
78a8ed03 | 510 | return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); |
a0313320 | 511 | return 0; |
512 | } | |
513 | ||
514 | case REAL_TYPE: | |
515 | { | |
ad31ad59 | 516 | int precision = TYPE_PRECISION (type); |
517 | if (precision == FLOAT_TYPE_SIZE) | |
a0313320 | 518 | return T_FLOAT; |
ad31ad59 | 519 | if (precision == DOUBLE_TYPE_SIZE) |
a0313320 | 520 | return T_DOUBLE; |
ad31ad59 | 521 | #ifdef EXTENDED_SDB_BASIC_TYPES |
522 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
523 | return T_LNGDBL; | |
997d68fe | 524 | #else |
525 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
526 | return T_DOUBLE; /* better than nothing */ | |
ad31ad59 | 527 | #endif |
a0313320 | 528 | return 0; |
529 | } | |
530 | ||
531 | case ARRAY_TYPE: | |
532 | { | |
533 | int m; | |
d4e7442d | 534 | if (level >= 6) |
535 | return T_VOID; | |
536 | else | |
537 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
a0313320 | 538 | if (sdb_n_dims < SDB_MAX_DIM) |
539 | sdb_dims[sdb_n_dims++] | |
540 | = (TYPE_DOMAIN (type) | |
5d844ba2 | 541 | && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0 |
542 | && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0 | |
35ec552a | 543 | && tree_fits_shwi_p (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) |
544 | && tree_fits_shwi_p (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) | |
fcb97e84 | 545 | ? (tree_to_shwi (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) |
546 | - tree_to_shwi (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) + 1) | |
a0313320 | 547 | : 0); |
5d844ba2 | 548 | |
a0313320 | 549 | return PUSH_DERIVED_LEVEL (DT_ARY, m); |
550 | } | |
551 | ||
552 | case RECORD_TYPE: | |
553 | case UNION_TYPE: | |
7f8a347a | 554 | case QUAL_UNION_TYPE: |
a0313320 | 555 | case ENUMERAL_TYPE: |
556 | { | |
fb80456a | 557 | const char *tag; |
a0313320 | 558 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
559 | sdbout_record_type_name (type); | |
560 | #endif | |
561 | #ifndef SDB_ALLOW_UNKNOWN_REFERENCES | |
562 | if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0) | |
563 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
564 | || TYPE_MODE (type) != VOIDmode | |
565 | #endif | |
566 | ) | |
567 | #endif | |
568 | { | |
569 | /* Output the referenced structure tag name | |
570 | only if the .def has already been finished. | |
571 | At least on 386, the Unix assembler | |
572 | cannot handle forward references to tags. */ | |
a92771b8 | 573 | /* But the 88100, it requires them, sigh... */ |
574 | /* And the MIPS requires unknown refs as well... */ | |
a0313320 | 575 | tag = KNOWN_TYPE_TAG (type); |
576 | PUT_SDB_TAG (tag); | |
577 | /* These 3 lines used to follow the close brace. | |
578 | However, a size of 0 without a tag implies a tag of 0, | |
579 | so if we don't know a tag, we can't mention the size. */ | |
580 | sdb_type_size = int_size_in_bytes (type); | |
581 | if (sdb_type_size < 0) | |
582 | sdb_type_size = 0; | |
583 | } | |
584 | return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT | |
585 | : (TREE_CODE (type) == UNION_TYPE) ? T_UNION | |
7f8a347a | 586 | : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION |
a0313320 | 587 | : T_ENUM); |
588 | } | |
589 | case POINTER_TYPE: | |
590 | case REFERENCE_TYPE: | |
591 | { | |
d4e7442d | 592 | int m; |
593 | if (level >= 6) | |
594 | return T_VOID; | |
595 | else | |
596 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
a0313320 | 597 | return PUSH_DERIVED_LEVEL (DT_PTR, m); |
598 | } | |
599 | case FUNCTION_TYPE: | |
600 | case METHOD_TYPE: | |
601 | { | |
d4e7442d | 602 | int m; |
603 | if (level >= 6) | |
604 | return T_VOID; | |
605 | else | |
606 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
a0313320 | 607 | return PUSH_DERIVED_LEVEL (DT_FCN, m); |
608 | } | |
609 | default: | |
610 | return 0; | |
611 | } | |
612 | } | |
3b8f8a40 | 613 | |
a0313320 | 614 | /* Output the symbols defined in block number DO_BLOCK. |
a0313320 | 615 | |
616 | This function works by walking the tree structure of blocks, | |
617 | counting blocks until it finds the desired block. */ | |
618 | ||
619 | static int do_block = 0; | |
620 | ||
a0313320 | 621 | static void |
3b8f8a40 | 622 | sdbout_block (tree block) |
a0313320 | 623 | { |
624 | while (block) | |
625 | { | |
626 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
627 | if (TREE_USED (block)) | |
628 | { | |
629 | /* When we reach the specified block, output its symbols. */ | |
5846cb0f | 630 | if (BLOCK_NUMBER (block) == do_block) |
631 | sdbout_syms (BLOCK_VARS (block)); | |
a0313320 | 632 | |
633 | /* If we are past the specified block, stop the scan. */ | |
5846cb0f | 634 | if (BLOCK_NUMBER (block) > do_block) |
a0313320 | 635 | return; |
636 | ||
a0313320 | 637 | /* Scan the blocks within this block. */ |
638 | sdbout_block (BLOCK_SUBBLOCKS (block)); | |
639 | } | |
640 | ||
641 | block = BLOCK_CHAIN (block); | |
642 | } | |
643 | } | |
3b8f8a40 | 644 | |
a0313320 | 645 | /* Call sdbout_symbol on each decl in the chain SYMS. */ |
646 | ||
647 | static void | |
3b8f8a40 | 648 | sdbout_syms (tree syms) |
a0313320 | 649 | { |
650 | while (syms) | |
651 | { | |
efb7ac84 | 652 | if (TREE_CODE (syms) != LABEL_DECL) |
653 | sdbout_symbol (syms, 1); | |
a0313320 | 654 | syms = TREE_CHAIN (syms); |
655 | } | |
656 | } | |
657 | ||
658 | /* Output SDB information for a symbol described by DECL. | |
659 | LOCAL is nonzero if the symbol is not file-scope. */ | |
660 | ||
661 | void | |
3b8f8a40 | 662 | sdbout_symbol (tree decl, int local) |
a0313320 | 663 | { |
a0313320 | 664 | tree type = TREE_TYPE (decl); |
665 | tree context = NULL_TREE; | |
666 | rtx value; | |
667 | int regno = -1; | |
fb1f4ef4 | 668 | const char *name; |
a0313320 | 669 | |
ec4f62a9 | 670 | /* If we are called before sdbout_init is run, just save the symbol |
671 | for later. */ | |
672 | if (!sdbout_initialized) | |
673 | { | |
674 | preinit_symbols = tree_cons (0, decl, preinit_symbols); | |
675 | return; | |
676 | } | |
677 | ||
b2ee5d20 | 678 | sdbout_one_type (type); |
679 | ||
a0313320 | 680 | switch (TREE_CODE (decl)) |
681 | { | |
682 | case CONST_DECL: | |
683 | /* Enum values are defined by defining the enum type. */ | |
684 | return; | |
685 | ||
686 | case FUNCTION_DECL: | |
687 | /* Don't mention a nested function under its parent. */ | |
688 | context = decl_function_context (decl); | |
689 | if (context == current_function_decl) | |
690 | return; | |
d9904a8e | 691 | /* Check DECL_INITIAL to distinguish declarations from definitions. |
692 | Don't output debug info here for declarations; they will have | |
693 | a DECL_INITIAL value of 0. */ | |
694 | if (! DECL_INITIAL (decl)) | |
a0313320 | 695 | return; |
e16ceb8e | 696 | if (!MEM_P (DECL_RTL (decl)) |
a0313320 | 697 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) |
698 | return; | |
699 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
700 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
701 | PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT); | |
702 | break; | |
703 | ||
704 | case TYPE_DECL: | |
705 | /* Done with tagged types. */ | |
706 | if (DECL_NAME (decl) == 0) | |
707 | return; | |
b2ee5d20 | 708 | if (DECL_IGNORED_P (decl)) |
709 | return; | |
2a9fdfe1 | 710 | /* Don't output intrinsic types. GAS chokes on SDB .def |
711 | statements that contain identifiers with embedded spaces | |
712 | (eg "unsigned long"). */ | |
713 | if (DECL_IS_BUILTIN (decl)) | |
714 | return; | |
a0313320 | 715 | |
716 | /* Output typedef name. */ | |
3d95713a | 717 | if (template_name_p (DECL_NAME (decl))) |
718 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
719 | else | |
720 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl))); | |
a0313320 | 721 | PUT_SDB_SCL (C_TPDEF); |
722 | break; | |
723 | ||
724 | case PARM_DECL: | |
725 | /* Parm decls go in their own separate chains | |
726 | and are output by sdbout_reg_parms and sdbout_parms. */ | |
04e579b6 | 727 | gcc_unreachable (); |
a0313320 | 728 | |
729 | case VAR_DECL: | |
730 | /* Don't mention a variable that is external. | |
731 | Let the file that defines it describe it. */ | |
2cf6e2c5 | 732 | if (DECL_EXTERNAL (decl)) |
a0313320 | 733 | return; |
734 | ||
b2ee5d20 | 735 | /* Ignore __FUNCTION__, etc. */ |
736 | if (DECL_IGNORED_P (decl)) | |
737 | return; | |
738 | ||
a0313320 | 739 | /* If there was an error in the declaration, don't dump core |
740 | if there is no RTL associated with the variable doesn't | |
741 | exist. */ | |
2f52aa25 | 742 | if (!DECL_RTL_SET_P (decl)) |
a0313320 | 743 | return; |
744 | ||
b081e1bb | 745 | value = DECL_RTL (decl); |
746 | ||
747 | if (!is_global_var (decl)) | |
748 | value = eliminate_regs (value, VOIDmode, NULL_RTX); | |
749 | ||
750 | SET_DECL_RTL (decl, value); | |
8d1c3ddc | 751 | #ifdef LEAF_REG_REMAP |
d5bf7b64 | 752 | if (crtl->uses_only_leaf_regs) |
b081e1bb | 753 | leaf_renumber_regs_insn (value); |
8d1c3ddc | 754 | #endif |
a0313320 | 755 | |
756 | /* Don't mention a variable at all | |
757 | if it was completely optimized into nothingness. | |
758 | ||
759 | If DECL was from an inline function, then its rtl | |
760 | is not identically the rtl that was used in this | |
761 | particular compilation. */ | |
8ad4c111 | 762 | if (REG_P (value)) |
a0313320 | 763 | { |
61ef2048 | 764 | regno = REGNO (value); |
a0313320 | 765 | if (regno >= FIRST_PSEUDO_REGISTER) |
a0313320 | 766 | return; |
767 | } | |
8d1c3ddc | 768 | else if (GET_CODE (value) == SUBREG) |
a0313320 | 769 | { |
a0313320 | 770 | while (GET_CODE (value) == SUBREG) |
701e46d0 | 771 | value = SUBREG_REG (value); |
8ad4c111 | 772 | if (REG_P (value)) |
a0313320 | 773 | { |
701e46d0 | 774 | if (REGNO (value) >= FIRST_PSEUDO_REGISTER) |
8d1c3ddc | 775 | return; |
a0313320 | 776 | } |
c6a6cdaa | 777 | regno = REGNO (alter_subreg (&value, true)); |
61ef2048 | 778 | SET_DECL_RTL (decl, value); |
a0313320 | 779 | } |
e8c015db | 780 | /* Don't output anything if an auto variable |
781 | gets RTL that is static. | |
782 | GAS version 2.2 can't handle such output. */ | |
e16ceb8e | 783 | else if (MEM_P (value) && CONSTANT_P (XEXP (value, 0)) |
e8c015db | 784 | && ! TREE_STATIC (decl)) |
785 | return; | |
a0313320 | 786 | |
787 | /* Emit any structure, union, or enum type that has not been output. | |
788 | This occurs for tag-less structs (et al) used to declare variables | |
789 | within functions. */ | |
790 | if (TREE_CODE (type) == ENUMERAL_TYPE | |
791 | || TREE_CODE (type) == RECORD_TYPE | |
7f8a347a | 792 | || TREE_CODE (type) == UNION_TYPE |
793 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
a0313320 | 794 | { |
4b72716d | 795 | if (COMPLETE_TYPE_P (type) /* not a forward reference */ |
a0313320 | 796 | && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */ |
797 | sdbout_one_type (type); | |
798 | } | |
799 | ||
800 | /* Defer SDB information for top-level initialized variables! */ | |
801 | if (! local | |
e16ceb8e | 802 | && MEM_P (value) |
a0313320 | 803 | && DECL_INITIAL (decl)) |
804 | return; | |
805 | ||
47b68a89 | 806 | /* C++ in 2.3 makes nameless symbols. That will be fixed later. |
807 | For now, avoid crashing. */ | |
808 | if (DECL_NAME (decl) == NULL_TREE) | |
809 | return; | |
810 | ||
a0313320 | 811 | /* Record the name for, starting a symtab entry. */ |
a9ffa672 | 812 | if (local) |
813 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
814 | else | |
815 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
a0313320 | 816 | |
e16ceb8e | 817 | if (MEM_P (value) |
a0313320 | 818 | && GET_CODE (XEXP (value, 0)) == SYMBOL_REF) |
819 | { | |
820 | PUT_SDB_DEF (name); | |
821 | if (TREE_PUBLIC (decl)) | |
822 | { | |
823 | PUT_SDB_VAL (XEXP (value, 0)); | |
40734805 | 824 | PUT_SDB_SCL (C_EXT); |
a0313320 | 825 | } |
826 | else | |
827 | { | |
828 | PUT_SDB_VAL (XEXP (value, 0)); | |
40734805 | 829 | PUT_SDB_SCL (C_STAT); |
a0313320 | 830 | } |
831 | } | |
832 | else if (regno >= 0) | |
833 | { | |
834 | PUT_SDB_DEF (name); | |
835 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno)); | |
836 | PUT_SDB_SCL (C_REG); | |
837 | } | |
e16ceb8e | 838 | else if (MEM_P (value) |
839 | && (MEM_P (XEXP (value, 0)) | |
8ad4c111 | 840 | || (REG_P (XEXP (value, 0)) |
13b1520b | 841 | && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM |
efb7ac84 | 842 | && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM))) |
a0313320 | 843 | /* If the value is indirect by memory or by a register |
844 | that isn't the frame pointer | |
845 | then it means the object is variable-sized and address through | |
846 | that register or stack slot. COFF has no way to represent this | |
847 | so all we can do is output the variable as a pointer. */ | |
848 | { | |
849 | PUT_SDB_DEF (name); | |
8ad4c111 | 850 | if (REG_P (XEXP (value, 0))) |
a0313320 | 851 | { |
852 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0)))); | |
853 | PUT_SDB_SCL (C_REG); | |
854 | } | |
855 | else | |
856 | { | |
857 | /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) | |
858 | (CONST_INT...)))). | |
859 | We want the value of that CONST_INT. */ | |
860 | /* Encore compiler hates a newline in a macro arg, it seems. */ | |
861 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
862 | (XEXP (XEXP (value, 0), 0))); | |
863 | PUT_SDB_SCL (C_AUTO); | |
864 | } | |
865 | ||
aa3c9856 | 866 | /* Effectively do build_pointer_type, but don't cache this type, |
867 | since it might be temporary whereas the type it points to | |
868 | might have been saved for inlining. */ | |
869 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
870 | type = make_node (POINTER_TYPE); | |
871 | TREE_TYPE (type) = TREE_TYPE (decl); | |
a0313320 | 872 | } |
e16ceb8e | 873 | else if (MEM_P (value) |
8cb85bca | 874 | && ((GET_CODE (XEXP (value, 0)) == PLUS |
8ad4c111 | 875 | && REG_P (XEXP (XEXP (value, 0), 0)) |
971ba038 | 876 | && CONST_INT_P (XEXP (XEXP (value, 0), 1))) |
8cb85bca | 877 | /* This is for variables which are at offset zero from |
878 | the frame pointer. This happens on the Alpha. | |
879 | Non-frame pointer registers are excluded above. */ | |
8ad4c111 | 880 | || (REG_P (XEXP (value, 0))))) |
a0313320 | 881 | { |
8cb85bca | 882 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
883 | or (MEM (REG...)). We want the value of that CONST_INT | |
884 | or zero. */ | |
a0313320 | 885 | PUT_SDB_DEF (name); |
886 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0))); | |
887 | PUT_SDB_SCL (C_AUTO); | |
888 | } | |
889 | else | |
890 | { | |
891 | /* It is something we don't know how to represent for SDB. */ | |
892 | return; | |
893 | } | |
894 | break; | |
99c14947 | 895 | |
896 | default: | |
897 | break; | |
a0313320 | 898 | } |
899 | PUT_SDB_TYPE (plain_type (type)); | |
900 | PUT_SDB_ENDEF; | |
901 | } | |
3b8f8a40 | 902 | |
a0313320 | 903 | /* Output SDB information for a top-level initialized variable |
904 | that has been delayed. */ | |
905 | ||
b29760a8 | 906 | static void |
3b8f8a40 | 907 | sdbout_toplevel_data (tree decl) |
a0313320 | 908 | { |
909 | tree type = TREE_TYPE (decl); | |
910 | ||
bd1802ca | 911 | if (DECL_IGNORED_P (decl)) |
912 | return; | |
913 | ||
04e579b6 | 914 | gcc_assert (TREE_CODE (decl) == VAR_DECL); |
915 | gcc_assert (MEM_P (DECL_RTL (decl))); | |
916 | gcc_assert (DECL_INITIAL (decl)); | |
a0313320 | 917 | |
918 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
919 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
920 | if (TREE_PUBLIC (decl)) | |
921 | { | |
922 | PUT_SDB_SCL (C_EXT); | |
923 | } | |
924 | else | |
925 | { | |
926 | PUT_SDB_SCL (C_STAT); | |
927 | } | |
928 | PUT_SDB_TYPE (plain_type (type)); | |
929 | PUT_SDB_ENDEF; | |
930 | } | |
3b8f8a40 | 931 | |
a0313320 | 932 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
933 | ||
a92771b8 | 934 | /* Machinery to record and output anonymous types. */ |
a0313320 | 935 | |
a0313320 | 936 | static void |
3b8f8a40 | 937 | sdbout_queue_anonymous_type (tree type) |
a0313320 | 938 | { |
d7c47c0e | 939 | anonymous_types = tree_cons (NULL_TREE, type, anonymous_types); |
a0313320 | 940 | } |
941 | ||
942 | static void | |
3b8f8a40 | 943 | sdbout_dequeue_anonymous_types (void) |
a0313320 | 944 | { |
19cb6b50 | 945 | tree types, link; |
a0313320 | 946 | |
947 | while (anonymous_types) | |
948 | { | |
949 | types = nreverse (anonymous_types); | |
950 | anonymous_types = NULL_TREE; | |
951 | ||
952 | for (link = types; link; link = TREE_CHAIN (link)) | |
953 | { | |
19cb6b50 | 954 | tree type = TREE_VALUE (link); |
a0313320 | 955 | |
3e3d68cf | 956 | if (type && ! TREE_ASM_WRITTEN (type)) |
a0313320 | 957 | sdbout_one_type (type); |
958 | } | |
959 | } | |
960 | } | |
961 | ||
962 | #endif | |
3b8f8a40 | 963 | |
a0313320 | 964 | /* Given a chain of ..._TYPE nodes, all of which have names, |
965 | output definitions of those names, as typedefs. */ | |
966 | ||
967 | void | |
3b8f8a40 | 968 | sdbout_types (tree types) |
a0313320 | 969 | { |
19cb6b50 | 970 | tree link; |
a0313320 | 971 | |
972 | for (link = types; link; link = TREE_CHAIN (link)) | |
973 | sdbout_one_type (link); | |
974 | ||
975 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
976 | sdbout_dequeue_anonymous_types (); | |
977 | #endif | |
978 | } | |
979 | ||
980 | static void | |
3b8f8a40 | 981 | sdbout_type (tree type) |
a0313320 | 982 | { |
a0313320 | 983 | if (type == error_mark_node) |
984 | type = integer_type_node; | |
985 | PUT_SDB_TYPE (plain_type (type)); | |
986 | } | |
987 | ||
988 | /* Output types of the fields of type TYPE, if they are structs. | |
989 | ||
990 | Formerly did not chase through pointer types, since that could be circular. | |
991 | They must come before TYPE, since forward refs are not allowed. | |
992 | Now james@bigtex.cactus.org says to try them. */ | |
993 | ||
994 | static void | |
3b8f8a40 | 995 | sdbout_field_types (tree type) |
a0313320 | 996 | { |
997 | tree tail; | |
997d68fe | 998 | |
a0313320 | 999 | for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail)) |
9d7fa7f0 | 1000 | /* This condition should match the one for emitting the actual |
1001 | members below. */ | |
347e6aec | 1002 | if (TREE_CODE (tail) == FIELD_DECL |
9d7fa7f0 | 1003 | && DECL_NAME (tail) |
1004 | && DECL_SIZE (tail) | |
cd4547bf | 1005 | && tree_fits_uhwi_p (DECL_SIZE (tail)) |
35ec552a | 1006 | && tree_fits_shwi_p (bit_position (tail))) |
347e6aec | 1007 | { |
1008 | if (POINTER_TYPE_P (TREE_TYPE (tail))) | |
1009 | sdbout_one_type (TREE_TYPE (TREE_TYPE (tail))); | |
1010 | else | |
1011 | sdbout_one_type (TREE_TYPE (tail)); | |
1012 | } | |
a0313320 | 1013 | } |
1014 | ||
1015 | /* Use this to put out the top level defined record and union types | |
1016 | for later reference. If this is a struct with a name, then put that | |
1017 | name out. Other unnamed structs will have .xxfake labels generated so | |
1018 | that they may be referred to later. | |
1019 | The label will be stored in the KNOWN_TYPE_TAG slot of a type. | |
1020 | It may NOT be called recursively. */ | |
1021 | ||
1022 | static void | |
3b8f8a40 | 1023 | sdbout_one_type (tree type) |
a0313320 | 1024 | { |
1ae11ad7 | 1025 | if (current_function_decl != NULL_TREE |
738a6bda | 1026 | && DECL_SECTION_NAME (current_function_decl) != NULL) |
1ae11ad7 | 1027 | ; /* Don't change section amid function. */ |
1028 | else | |
d641a4ab | 1029 | switch_to_section (current_function_section ()); |
a0313320 | 1030 | |
1031 | switch (TREE_CODE (type)) | |
1032 | { | |
1033 | case RECORD_TYPE: | |
1034 | case UNION_TYPE: | |
7f8a347a | 1035 | case QUAL_UNION_TYPE: |
a0313320 | 1036 | case ENUMERAL_TYPE: |
1037 | type = TYPE_MAIN_VARIANT (type); | |
1038 | /* Don't output a type twice. */ | |
1039 | if (TREE_ASM_WRITTEN (type)) | |
1040 | /* James said test TREE_ASM_BEING_WRITTEN here. */ | |
1041 | return; | |
1042 | ||
1043 | /* Output nothing if type is not yet defined. */ | |
4b72716d | 1044 | if (!COMPLETE_TYPE_P (type)) |
a0313320 | 1045 | return; |
1046 | ||
1047 | TREE_ASM_WRITTEN (type) = 1; | |
3b8f8a40 | 1048 | |
a0313320 | 1049 | /* This is reputed to cause trouble with the following case, |
ed689d5e | 1050 | but perhaps checking TYPE_SIZE above will fix it. */ |
a0313320 | 1051 | |
de44dcb9 | 1052 | /* Here is a testcase: |
a0313320 | 1053 | |
1054 | struct foo { | |
1055 | struct badstr *bbb; | |
1056 | } forwardref; | |
1057 | ||
1058 | typedef struct intermediate { | |
1059 | int aaaa; | |
1060 | } intermediate_ref; | |
1061 | ||
1062 | typedef struct badstr { | |
1063 | int ccccc; | |
1064 | } badtype; */ | |
1065 | ||
a0313320 | 1066 | /* This change, which ought to make better output, |
1067 | used to make the COFF assembler unhappy. | |
1068 | Changes involving KNOWN_TYPE_TAG may fix the problem. */ | |
1069 | /* Before really doing anything, output types we want to refer to. */ | |
1070 | /* Note that in version 1 the following two lines | |
1071 | are not used if forward references are in use. */ | |
1072 | if (TREE_CODE (type) != ENUMERAL_TYPE) | |
1073 | sdbout_field_types (type); | |
a0313320 | 1074 | |
1075 | /* Output a structure type. */ | |
1076 | { | |
1077 | int size = int_size_in_bytes (type); | |
ef2c4a29 | 1078 | int member_scl = 0; |
a0313320 | 1079 | tree tem; |
1080 | ||
1081 | /* Record the type tag, but not in its permanent place just yet. */ | |
1082 | sdbout_record_type_name (type); | |
1083 | ||
1084 | PUT_SDB_DEF (KNOWN_TYPE_TAG (type)); | |
1085 | ||
1086 | switch (TREE_CODE (type)) | |
1087 | { | |
1088 | case UNION_TYPE: | |
7f8a347a | 1089 | case QUAL_UNION_TYPE: |
a0313320 | 1090 | PUT_SDB_SCL (C_UNTAG); |
1091 | PUT_SDB_TYPE (T_UNION); | |
1092 | member_scl = C_MOU; | |
1093 | break; | |
1094 | ||
1095 | case RECORD_TYPE: | |
1096 | PUT_SDB_SCL (C_STRTAG); | |
1097 | PUT_SDB_TYPE (T_STRUCT); | |
1098 | member_scl = C_MOS; | |
1099 | break; | |
1100 | ||
1101 | case ENUMERAL_TYPE: | |
1102 | PUT_SDB_SCL (C_ENTAG); | |
1103 | PUT_SDB_TYPE (T_ENUM); | |
1104 | member_scl = C_MOE; | |
1105 | break; | |
99c14947 | 1106 | |
1107 | default: | |
1108 | break; | |
a0313320 | 1109 | } |
1110 | ||
1111 | PUT_SDB_SIZE (size); | |
1112 | PUT_SDB_ENDEF; | |
1113 | ||
efb7ac84 | 1114 | /* Print out the base class information with fields |
1115 | named after the types they hold. */ | |
734c98be | 1116 | /* This is only relevant to aggregate types. TYPE_BINFO is used |
7a0272bc | 1117 | for other purposes in an ENUMERAL_TYPE, so we must exclude that |
1118 | case. */ | |
f6cc6a08 | 1119 | if (TREE_CODE (type) != ENUMERAL_TYPE && TYPE_BINFO (type)) |
efb7ac84 | 1120 | { |
f6cc6a08 | 1121 | int i; |
1122 | tree binfo, child; | |
1123 | ||
1124 | for (binfo = TYPE_BINFO (type), i = 0; | |
1125 | BINFO_BASE_ITERATE (binfo, i, child); i++) | |
72d58909 | 1126 | { |
7a0272bc | 1127 | tree child_type = BINFO_TYPE (child); |
1128 | tree child_type_name; | |
48e1416a | 1129 | |
7a0272bc | 1130 | if (TYPE_NAME (child_type) == 0) |
1131 | continue; | |
1132 | if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE) | |
1133 | child_type_name = TYPE_NAME (child_type); | |
1134 | else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL) | |
1135 | { | |
1136 | child_type_name = DECL_NAME (TYPE_NAME (child_type)); | |
1137 | if (child_type_name && template_name_p (child_type_name)) | |
1138 | child_type_name | |
1139 | = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type)); | |
1140 | } | |
1141 | else | |
1142 | continue; | |
1143 | ||
7a0272bc | 1144 | PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name)); |
fcb97e84 | 1145 | PUT_SDB_INT_VAL (tree_to_shwi (BINFO_OFFSET (child))); |
7a0272bc | 1146 | PUT_SDB_SCL (member_scl); |
1147 | sdbout_type (BINFO_TYPE (child)); | |
1148 | PUT_SDB_ENDEF; | |
72d58909 | 1149 | } |
efb7ac84 | 1150 | } |
1151 | ||
21dda4ee | 1152 | /* Output the individual fields. */ |
a0313320 | 1153 | |
1154 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
eddf1356 | 1155 | { |
84a5a099 | 1156 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) |
d66fbe4c | 1157 | { |
1158 | tree value = TREE_VALUE (tem); | |
1159 | ||
1160 | if (TREE_CODE (value) == CONST_DECL) | |
1161 | value = DECL_INITIAL (value); | |
1162 | ||
35ec552a | 1163 | if (tree_fits_shwi_p (value)) |
d66fbe4c | 1164 | { |
1165 | PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem))); | |
fcb97e84 | 1166 | PUT_SDB_INT_VAL (tree_to_shwi (value)); |
d66fbe4c | 1167 | PUT_SDB_SCL (C_MOE); |
1168 | PUT_SDB_TYPE (T_MOE); | |
1169 | PUT_SDB_ENDEF; | |
1170 | } | |
1171 | } | |
eddf1356 | 1172 | } |
a0313320 | 1173 | else /* record or union type */ |
1174 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1175 | /* Output the name, type, position (in bits), size (in bits) | |
1176 | of each field. */ | |
1177 | ||
1178 | /* Omit here the nameless fields that are used to skip bits. | |
1179 | Also omit fields with variable size or position. | |
1180 | Also omit non FIELD_DECL nodes that GNU C++ may put here. */ | |
1181 | if (TREE_CODE (tem) == FIELD_DECL | |
9d7fa7f0 | 1182 | && DECL_NAME (tem) |
1183 | && DECL_SIZE (tem) | |
cd4547bf | 1184 | && tree_fits_uhwi_p (DECL_SIZE (tem)) |
35ec552a | 1185 | && tree_fits_shwi_p (bit_position (tem))) |
a0313320 | 1186 | { |
fb1f4ef4 | 1187 | const char *name; |
f318d84a | 1188 | |
a9ffa672 | 1189 | name = IDENTIFIER_POINTER (DECL_NAME (tem)); |
f318d84a | 1190 | PUT_SDB_DEF (name); |
a0313320 | 1191 | if (DECL_BIT_FIELD_TYPE (tem)) |
1192 | { | |
5d844ba2 | 1193 | PUT_SDB_INT_VAL (int_bit_position (tem)); |
a0313320 | 1194 | PUT_SDB_SCL (C_FIELD); |
1195 | sdbout_type (DECL_BIT_FIELD_TYPE (tem)); | |
6a0712d4 | 1196 | PUT_SDB_SIZE (tree_to_uhwi (DECL_SIZE (tem))); |
a0313320 | 1197 | } |
1198 | else | |
1199 | { | |
5d844ba2 | 1200 | PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT); |
a0313320 | 1201 | PUT_SDB_SCL (member_scl); |
1202 | sdbout_type (TREE_TYPE (tem)); | |
1203 | } | |
1204 | PUT_SDB_ENDEF; | |
1205 | } | |
21dda4ee | 1206 | /* Output end of a structure,union, or enumeral definition. */ |
a0313320 | 1207 | |
1208 | PUT_SDB_PLAIN_DEF ("eos"); | |
1209 | PUT_SDB_INT_VAL (size); | |
1210 | PUT_SDB_SCL (C_EOS); | |
1211 | PUT_SDB_TAG (KNOWN_TYPE_TAG (type)); | |
1212 | PUT_SDB_SIZE (size); | |
1213 | PUT_SDB_ENDEF; | |
1214 | break; | |
1215 | } | |
20167aff | 1216 | |
1217 | default: | |
1218 | break; | |
a0313320 | 1219 | } |
1220 | } | |
3b8f8a40 | 1221 | |
a0313320 | 1222 | /* The following two functions output definitions of function parameters. |
1223 | Each parameter gets a definition locating it in the parameter list. | |
1224 | Each parameter that is a register variable gets a second definition | |
1225 | locating it in the register. | |
1226 | ||
1227 | Printing or argument lists in gdb uses the definitions that | |
1228 | locate in the parameter list. But reference to the variable in | |
1229 | expressions uses preferentially the definition as a register. */ | |
1230 | ||
1231 | /* Output definitions, referring to storage in the parmlist, | |
1232 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
1233 | ||
1234 | static void | |
3b8f8a40 | 1235 | sdbout_parms (tree parms) |
a0313320 | 1236 | { |
1237 | for (; parms; parms = TREE_CHAIN (parms)) | |
7020833c | 1238 | if (DECL_NAME (parms) |
1239 | && TREE_TYPE (parms) != error_mark_node | |
1240 | && DECL_RTL_SET_P (parms) | |
1241 | && DECL_INCOMING_RTL (parms)) | |
a0313320 | 1242 | { |
1243 | int current_sym_value = 0; | |
fb1f4ef4 | 1244 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
a0313320 | 1245 | |
1246 | if (name == 0 || *name == 0) | |
1247 | name = gen_fake_label (); | |
1248 | ||
1249 | /* Perform any necessary register eliminations on the parameter's rtl, | |
1250 | so that the debugging output will be accurate. */ | |
0bc644e0 | 1251 | DECL_INCOMING_RTL (parms) |
46b5e7dc | 1252 | = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX); |
2f52aa25 | 1253 | SET_DECL_RTL (parms, |
46b5e7dc | 1254 | eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX)); |
a0313320 | 1255 | |
1256 | if (PARM_PASSED_IN_MEMORY (parms)) | |
1257 | { | |
1258 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
1259 | tree type; | |
1260 | ||
1261 | /* ??? Here we assume that the parm address is indexed | |
1262 | off the frame pointer or arg pointer. | |
1263 | If that is not true, we produce meaningless results, | |
1264 | but do not crash. */ | |
1265 | if (GET_CODE (addr) == PLUS | |
971ba038 | 1266 | && CONST_INT_P (XEXP (addr, 1))) |
a0313320 | 1267 | current_sym_value = INTVAL (XEXP (addr, 1)); |
1268 | else | |
1269 | current_sym_value = 0; | |
1270 | ||
8ad4c111 | 1271 | if (REG_P (DECL_RTL (parms)) |
a0313320 | 1272 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
1273 | type = DECL_ARG_TYPE (parms); | |
1274 | else | |
1275 | { | |
1276 | int original_sym_value = current_sym_value; | |
1277 | ||
1278 | /* This is the case where the parm is passed as an int or | |
1279 | double and it is converted to a char, short or float | |
1280 | and stored back in the parmlist. In this case, describe | |
1281 | the parm with the variable's declared type, and adjust | |
1282 | the address if the least significant bytes (which we are | |
1283 | using) are not the first ones. */ | |
51356f86 | 1284 | if (BYTES_BIG_ENDIAN |
1285 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
a0313320 | 1286 | current_sym_value += |
1287 | (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1288 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
51356f86 | 1289 | |
e16ceb8e | 1290 | if (MEM_P (DECL_RTL (parms)) |
a0313320 | 1291 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS |
1292 | && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1293 | == CONST_INT) | |
1294 | && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1295 | == current_sym_value)) | |
1296 | type = TREE_TYPE (parms); | |
1297 | else | |
1298 | { | |
1299 | current_sym_value = original_sym_value; | |
1300 | type = DECL_ARG_TYPE (parms); | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | PUT_SDB_DEF (name); | |
1305 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr)); | |
1306 | PUT_SDB_SCL (C_ARG); | |
1307 | PUT_SDB_TYPE (plain_type (type)); | |
1308 | PUT_SDB_ENDEF; | |
1309 | } | |
8ad4c111 | 1310 | else if (REG_P (DECL_RTL (parms))) |
a0313320 | 1311 | { |
1312 | rtx best_rtl; | |
1313 | /* Parm passed in registers and lives in registers or nowhere. */ | |
1314 | ||
1315 | /* If parm lives in a register, use that register; | |
1316 | pretend the parm was passed there. It would be more consistent | |
1317 | to describe the register where the parm was passed, | |
1318 | but in practice that register usually holds something else. */ | |
02e7a332 | 1319 | if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
a0313320 | 1320 | best_rtl = DECL_RTL (parms); |
1321 | /* If the parm lives nowhere, | |
1322 | use the register where it was passed. */ | |
1323 | else | |
1324 | best_rtl = DECL_INCOMING_RTL (parms); | |
1325 | ||
1326 | PUT_SDB_DEF (name); | |
1327 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl))); | |
1328 | PUT_SDB_SCL (C_REGPARM); | |
0d4e817b | 1329 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
a0313320 | 1330 | PUT_SDB_ENDEF; |
1331 | } | |
e16ceb8e | 1332 | else if (MEM_P (DECL_RTL (parms)) |
a0313320 | 1333 | && XEXP (DECL_RTL (parms), 0) != const0_rtx) |
1334 | { | |
1335 | /* Parm was passed in registers but lives on the stack. */ | |
1336 | ||
1337 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
1338 | in which case we want the value of that CONST_INT, | |
1339 | or (MEM (REG ...)) or (MEM (MEM ...)), | |
1340 | in which case we use a value of zero. */ | |
8ad4c111 | 1341 | if (REG_P (XEXP (DECL_RTL (parms), 0)) |
e16ceb8e | 1342 | || MEM_P (XEXP (DECL_RTL (parms), 0))) |
a0313320 | 1343 | current_sym_value = 0; |
1344 | else | |
1345 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
1346 | ||
1347 | /* Again, this assumes the offset is based on the arg pointer. */ | |
1348 | PUT_SDB_DEF (name); | |
1349 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, | |
1350 | XEXP (DECL_RTL (parms), 0))); | |
1351 | PUT_SDB_SCL (C_ARG); | |
0d4e817b | 1352 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
a0313320 | 1353 | PUT_SDB_ENDEF; |
1354 | } | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | /* Output definitions for the places where parms live during the function, | |
1359 | when different from where they were passed, when the parms were passed | |
1360 | in memory. | |
1361 | ||
1362 | It is not useful to do this for parms passed in registers | |
1363 | that live during the function in different registers, because it is | |
1364 | impossible to look in the passed register for the passed value, | |
1365 | so we use the within-the-function register to begin with. | |
1366 | ||
1367 | PARMS is a chain of PARM_DECL nodes. */ | |
1368 | ||
1369 | static void | |
3b8f8a40 | 1370 | sdbout_reg_parms (tree parms) |
a0313320 | 1371 | { |
1372 | for (; parms; parms = TREE_CHAIN (parms)) | |
7020833c | 1373 | if (DECL_NAME (parms) |
1374 | && TREE_TYPE (parms) != error_mark_node | |
1375 | && DECL_RTL_SET_P (parms) | |
1376 | && DECL_INCOMING_RTL (parms)) | |
a0313320 | 1377 | { |
fb1f4ef4 | 1378 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
a0313320 | 1379 | |
1380 | /* Report parms that live in registers during the function | |
1381 | but were passed in memory. */ | |
8ad4c111 | 1382 | if (REG_P (DECL_RTL (parms)) |
a0313320 | 1383 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER |
1384 | && PARM_PASSED_IN_MEMORY (parms)) | |
1385 | { | |
1386 | if (name == 0 || *name == 0) | |
1387 | name = gen_fake_label (); | |
1388 | PUT_SDB_DEF (name); | |
1389 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)))); | |
1390 | PUT_SDB_SCL (C_REG); | |
0d4e817b | 1391 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
a0313320 | 1392 | PUT_SDB_ENDEF; |
1393 | } | |
1394 | /* Report parms that live in memory but not where they were passed. */ | |
e16ceb8e | 1395 | else if (MEM_P (DECL_RTL (parms)) |
a0313320 | 1396 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS |
971ba038 | 1397 | && CONST_INT_P (XEXP (XEXP (DECL_RTL (parms), 0), 1)) |
a0313320 | 1398 | && PARM_PASSED_IN_MEMORY (parms) |
1399 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
1400 | { | |
1401 | #if 0 /* ??? It is not clear yet what should replace this. */ | |
1402 | int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
1403 | /* A parm declared char is really passed as an int, | |
1404 | so it occupies the least significant bytes. | |
1405 | On a big-endian machine those are not the low-numbered ones. */ | |
51356f86 | 1406 | if (BYTES_BIG_ENDIAN |
1407 | && offset != -1 | |
1408 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
a0313320 | 1409 | offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) |
1410 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
a0313320 | 1411 | if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} |
1412 | #endif | |
1413 | { | |
1414 | if (name == 0 || *name == 0) | |
1415 | name = gen_fake_label (); | |
1416 | PUT_SDB_DEF (name); | |
1417 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
1418 | (XEXP (DECL_RTL (parms), 0))); | |
1419 | PUT_SDB_SCL (C_AUTO); | |
1420 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
1421 | PUT_SDB_ENDEF; | |
1422 | } | |
1423 | } | |
1424 | } | |
1425 | } | |
3b8f8a40 | 1426 | |
3a1c9df2 | 1427 | /* Output early debug information for a global DECL. Called from |
1428 | rest_of_decl_compilation during parsing. */ | |
c37d72e9 | 1429 | |
1430 | static void | |
3a1c9df2 | 1431 | sdbout_early_global_decl (tree decl ATTRIBUTE_UNUSED) |
1432 | { | |
1433 | /* NYI for non-dwarf. */ | |
1434 | } | |
1435 | ||
1436 | /* Output late debug information for a global DECL after location | |
1437 | information is available. */ | |
1438 | ||
1439 | static void | |
1440 | sdbout_late_global_decl (tree decl) | |
c37d72e9 | 1441 | { |
1442 | if (TREE_CODE (decl) == VAR_DECL | |
9dcd5f30 | 1443 | && !DECL_EXTERNAL (decl) |
1444 | && DECL_RTL_SET_P (decl)) | |
c37d72e9 | 1445 | { |
1446 | /* The COFF linker can move initialized global vars to the end. | |
9dcd5f30 | 1447 | And that can screw up the symbol ordering. Defer those for |
1448 | sdbout_finish (). */ | |
1449 | if (!DECL_INITIAL (decl) || !TREE_PUBLIC (decl)) | |
c37d72e9 | 1450 | sdbout_symbol (decl, 0); |
73ae3ef7 | 1451 | else |
f1f41a6c | 1452 | vec_safe_push (deferred_global_decls, decl); |
c37d72e9 | 1453 | |
1454 | /* Output COFF information for non-global file-scope initialized | |
1455 | variables. */ | |
e16ceb8e | 1456 | if (DECL_INITIAL (decl) && MEM_P (DECL_RTL (decl))) |
c37d72e9 | 1457 | sdbout_toplevel_data (decl); |
1458 | } | |
1459 | } | |
9dcd5f30 | 1460 | |
1461 | /* Output initialized global vars at the end, in the order of | |
1462 | definition. See comment in sdbout_global_decl. */ | |
1463 | ||
1464 | static void | |
3b8f8a40 | 1465 | sdbout_finish (const char *main_filename ATTRIBUTE_UNUSED) |
9dcd5f30 | 1466 | { |
ec4f62a9 | 1467 | size_t i; |
67076d6d | 1468 | tree decl; |
9dcd5f30 | 1469 | |
f1f41a6c | 1470 | FOR_EACH_VEC_SAFE_ELT (deferred_global_decls, i, decl) |
67076d6d | 1471 | sdbout_symbol (decl, 0); |
9dcd5f30 | 1472 | } |
3b8f8a40 | 1473 | |
a0313320 | 1474 | /* Describe the beginning of an internal block within a function. |
1475 | Also output descriptions of variables defined in this block. | |
1476 | ||
1477 | N is the number of the block, by order of beginning, counting from 1, | |
1478 | and not counting the outermost (function top-level) block. | |
1479 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
1480 | if the count starts at 0 for the outermost one. */ | |
1481 | ||
1dff614c | 1482 | static void |
3b8f8a40 | 1483 | sdbout_begin_block (unsigned int line, unsigned int n) |
a0313320 | 1484 | { |
1485 | tree decl = current_function_decl; | |
1486 | MAKE_LINE_SAFE (line); | |
e7a5a9f6 | 1487 | |
1488 | /* The SCO compiler does not emit a separate block for the function level | |
c9185637 | 1489 | scope, so we avoid it here also. */ |
1490 | PUT_SDB_BLOCK_START (line - sdb_begin_function_line); | |
e7a5a9f6 | 1491 | |
a0313320 | 1492 | if (n == 1) |
1493 | { | |
1494 | /* Include the outermost BLOCK's variables in block 1. */ | |
5846cb0f | 1495 | do_block = BLOCK_NUMBER (DECL_INITIAL (decl)); |
a0313320 | 1496 | sdbout_block (DECL_INITIAL (decl)); |
1497 | } | |
1498 | /* If -g1, suppress all the internal symbols of functions | |
1499 | except for arguments. */ | |
1500 | if (debug_info_level != DINFO_LEVEL_TERSE) | |
1501 | { | |
a0313320 | 1502 | do_block = n; |
1503 | sdbout_block (DECL_INITIAL (decl)); | |
1504 | } | |
1505 | ||
1506 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1507 | sdbout_dequeue_anonymous_types (); | |
1508 | #endif | |
1509 | } | |
1510 | ||
1511 | /* Describe the end line-number of an internal block within a function. */ | |
1512 | ||
b9b7f8b4 | 1513 | static void |
3b8f8a40 | 1514 | sdbout_end_block (unsigned int line, unsigned int n ATTRIBUTE_UNUSED) |
a0313320 | 1515 | { |
1516 | MAKE_LINE_SAFE (line); | |
e7a5a9f6 | 1517 | |
1518 | /* The SCO compiler does not emit a separate block for the function level | |
c9185637 | 1519 | scope, so we avoid it here also. */ |
e7a5a9f6 | 1520 | if (n != 1) |
c9185637 | 1521 | PUT_SDB_BLOCK_END (line - sdb_begin_function_line); |
a0313320 | 1522 | } |
1523 | ||
b1bd5ac9 | 1524 | /* Output a line number symbol entry for source file FILENAME and line |
1525 | number LINE. */ | |
1526 | ||
b9b7f8b4 | 1527 | static void |
d01c707b | 1528 | sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED, |
1488fe24 | 1529 | int discriminator ATTRIBUTE_UNUSED, |
1530 | bool is_stmt ATTRIBUTE_UNUSED) | |
b9b7f8b4 | 1531 | { |
b9b7f8b4 | 1532 | /* COFF relative line numbers must be positive. */ |
27d0c333 | 1533 | if ((int) line > sdb_begin_function_line) |
b9b7f8b4 | 1534 | { |
e3b8b697 | 1535 | #ifdef SDB_OUTPUT_SOURCE_LINE |
1536 | SDB_OUTPUT_SOURCE_LINE (asm_out_file, line); | |
b9b7f8b4 | 1537 | #else |
1538 | fprintf (asm_out_file, "\t.ln\t%d\n", | |
1539 | ((sdb_begin_function_line > -1) | |
1540 | ? line - sdb_begin_function_line : 1)); | |
1541 | #endif | |
1542 | } | |
1543 | } | |
1544 | ||
a0313320 | 1545 | /* Output sdb info for the current function name. |
1546 | Called from assemble_start_function. */ | |
1547 | ||
f76df888 | 1548 | static void |
3b8f8a40 | 1549 | sdbout_begin_function (tree decl ATTRIBUTE_UNUSED) |
a0313320 | 1550 | { |
1551 | sdbout_symbol (current_function_decl, 0); | |
1552 | } | |
1553 | ||
c9185637 | 1554 | /* Called at beginning of function body after prologue. Record the |
1555 | function's starting line number, so we can output relative line numbers | |
1556 | for the other lines. Describe beginning of outermost block. Also | |
1557 | describe the parameter list. */ | |
a0313320 | 1558 | |
f76df888 | 1559 | static void |
3b8f8a40 | 1560 | sdbout_begin_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) |
f76df888 | 1561 | { |
e74e8242 | 1562 | sdbout_end_prologue (line, file); |
f76df888 | 1563 | } |
f76df888 | 1564 | |
1565 | static void | |
808ea0c9 | 1566 | sdbout_end_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) |
a0313320 | 1567 | { |
1568 | sdb_begin_function_line = line - 1; | |
1569 | PUT_SDB_FUNCTION_START (line); | |
1570 | sdbout_parms (DECL_ARGUMENTS (current_function_decl)); | |
1571 | sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl)); | |
1572 | } | |
1573 | ||
1574 | /* Called at end of function (before epilogue). | |
1575 | Describe end of outermost block. */ | |
1576 | ||
b9b7f8b4 | 1577 | static void |
3b8f8a40 | 1578 | sdbout_end_function (unsigned int line) |
a0313320 | 1579 | { |
1580 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1581 | sdbout_dequeue_anonymous_types (); | |
1582 | #endif | |
1583 | ||
1584 | MAKE_LINE_SAFE (line); | |
1585 | PUT_SDB_FUNCTION_END (line - sdb_begin_function_line); | |
1586 | ||
1587 | /* Indicate we are between functions, for line-number output. */ | |
1588 | sdb_begin_function_line = -1; | |
1589 | } | |
1590 | ||
1591 | /* Output sdb info for the absolute end of a function. | |
1592 | Called after the epilogue is output. */ | |
1593 | ||
b9b7f8b4 | 1594 | static void |
3b8f8a40 | 1595 | sdbout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, |
1596 | const char *file ATTRIBUTE_UNUSED) | |
a0313320 | 1597 | { |
96b529f2 | 1598 | const char *const name ATTRIBUTE_UNUSED |
b9b7f8b4 | 1599 | = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); |
1600 | ||
1601 | #ifdef PUT_SDB_EPILOGUE_END | |
1602 | PUT_SDB_EPILOGUE_END (name); | |
1603 | #else | |
1604 | fprintf (asm_out_file, "\t.def\t"); | |
1605 | assemble_name (asm_out_file, name); | |
1606 | fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", | |
1607 | SDB_DELIM, SDB_DELIM, SDB_DELIM); | |
1608 | #endif | |
a0313320 | 1609 | } |
1610 | ||
1611 | /* Output sdb info for the given label. Called only if LABEL_NAME (insn) | |
1612 | is present. */ | |
1613 | ||
b29760a8 | 1614 | static void |
3352ba19 | 1615 | sdbout_label (rtx_code_label *insn) |
a0313320 | 1616 | { |
1617 | PUT_SDB_DEF (LABEL_NAME (insn)); | |
1618 | PUT_SDB_VAL (insn); | |
1619 | PUT_SDB_SCL (C_LABEL); | |
1620 | PUT_SDB_TYPE (T_NULL); | |
1621 | PUT_SDB_ENDEF; | |
1622 | } | |
1623 | ||
33d72cae | 1624 | /* Change to reading from a new source file. */ |
1625 | ||
c140b944 | 1626 | static void |
3b8f8a40 | 1627 | sdbout_start_source_file (unsigned int line ATTRIBUTE_UNUSED, |
1628 | const char *filename ATTRIBUTE_UNUSED) | |
33d72cae | 1629 | { |
33d72cae | 1630 | } |
1631 | ||
1632 | /* Revert to reading a previous source file. */ | |
1633 | ||
c140b944 | 1634 | static void |
3b8f8a40 | 1635 | sdbout_end_source_file (unsigned int line ATTRIBUTE_UNUSED) |
33d72cae | 1636 | { |
33d72cae | 1637 | } |
1638 | ||
a9ffa672 | 1639 | /* Set up for SDB output at the start of compilation. */ |
1640 | ||
b896d81b | 1641 | static void |
3b8f8a40 | 1642 | sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED) |
a9ffa672 | 1643 | { |
ec4f62a9 | 1644 | tree t; |
1645 | ||
f1f41a6c | 1646 | vec_alloc (deferred_global_decls, 12); |
ec4f62a9 | 1647 | |
1648 | /* Emit debug information which was queued by sdbout_symbol before | |
1649 | we got here. */ | |
1650 | sdbout_initialized = true; | |
1651 | ||
1652 | for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t)) | |
1653 | sdbout_symbol (TREE_VALUE (t), 0); | |
1654 | preinit_symbols = 0; | |
a9ffa672 | 1655 | } |
1656 | ||
a0313320 | 1657 | #endif /* SDB_DEBUGGING_INFO */ |
1f3233d1 | 1658 | |
1659 | #include "gt-sdbout.h" |