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a0313320 | 1 | /* Output sdb-format symbol table information from GNU compiler. |
ad565c04 | 2 | Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
cfe7b52e | 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 |
cfaf579d | 4 | Free Software Foundation, Inc. |
a0313320 | 5 | |
f12b58b3 | 6 | This file is part of GCC. |
a0313320 | 7 | |
f12b58b3 | 8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 10 | Software Foundation; either version 3, or (at your option) any later |
f12b58b3 | 11 | version. |
a0313320 | 12 | |
f12b58b3 | 13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
a0313320 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
a0313320 | 21 | |
22 | /* mike@tredysvr.Tredydev.Unisys.COM says: | |
23 | I modified the struct.c example and have a nm of a .o resulting from the | |
24 | AT&T C compiler. From the example below I would conclude the following: | |
25 | ||
26 | 1. All .defs from structures are emitted as scanned. The example below | |
27 | clearly shows the symbol table entries for BoxRec2 are after the first | |
28 | function. | |
29 | ||
30 | 2. All functions and their locals (including statics) are emitted as scanned. | |
31 | ||
32 | 3. All nested unnamed union and structure .defs must be emitted before | |
33 | the structure in which they are nested. The AT&T assembler is a | |
34 | one pass beast as far as symbolics are concerned. | |
35 | ||
36 | 4. All structure .defs are emitted before the typedefs that refer to them. | |
37 | ||
38 | 5. All top level static and external variable definitions are moved to the | |
4bbea254 | 39 | end of file with all top level statics occurring first before externs. |
a0313320 | 40 | |
41 | 6. All undefined references are at the end of the file. | |
42 | */ | |
43 | ||
44 | #include "config.h" | |
1f3233d1 | 45 | #include "system.h" |
805e22b2 | 46 | #include "coretypes.h" |
47 | #include "tm.h" | |
1f3233d1 | 48 | #include "debug.h" |
49 | #include "tree.h" | |
50 | #include "ggc.h" | |
67076d6d | 51 | #include "vec.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 | ||
67076d6d | 61 | static GTY(()) VEC(tree,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 *); |
122 | static void sdbout_global_decl (tree); | |
f76df888 | 123 | #ifndef MIPS_DEBUGGING_INFO |
3b8f8a40 | 124 | static void sdbout_begin_prologue (unsigned int, const char *); |
f76df888 | 125 | #endif |
3b8f8a40 | 126 | static void sdbout_end_prologue (unsigned int, const char *); |
127 | static void sdbout_begin_function (tree); | |
128 | static void sdbout_end_function (unsigned int); | |
129 | static void sdbout_toplevel_data (tree); | |
130 | static void sdbout_label (rtx); | |
131 | static char *gen_fake_label (void); | |
132 | static int plain_type (tree); | |
133 | static int template_name_p (tree); | |
134 | static void sdbout_record_type_name (tree); | |
135 | static int plain_type_1 (tree, int); | |
136 | static void sdbout_block (tree); | |
137 | static void sdbout_syms (tree); | |
d8c9779c | 138 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
3b8f8a40 | 139 | static void sdbout_queue_anonymous_type (tree); |
140 | static void sdbout_dequeue_anonymous_types (void); | |
d8c9779c | 141 | #endif |
3b8f8a40 | 142 | static void sdbout_type (tree); |
143 | static void sdbout_field_types (tree); | |
144 | static void sdbout_one_type (tree); | |
145 | static void sdbout_parms (tree); | |
146 | static void sdbout_reg_parms (tree); | |
147 | static void sdbout_global_decl (tree); | |
a0313320 | 148 | |
3b8f8a40 | 149 | /* Random macros describing parts of SDB data. */ |
a0313320 | 150 | |
151 | /* Default value of delimiter is ";". */ | |
152 | #ifndef SDB_DELIM | |
153 | #define SDB_DELIM ";" | |
154 | #endif | |
155 | ||
156 | /* Maximum number of dimensions the assembler will allow. */ | |
157 | #ifndef SDB_MAX_DIM | |
158 | #define SDB_MAX_DIM 4 | |
159 | #endif | |
160 | ||
161 | #ifndef PUT_SDB_SCL | |
162 | #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM) | |
163 | #endif | |
164 | ||
165 | #ifndef PUT_SDB_INT_VAL | |
77d71bdb | 166 | #define PUT_SDB_INT_VAL(a) \ |
167 | do { \ | |
85aa12f7 | 168 | fprintf (asm_out_file, "\t.val\t" HOST_WIDE_INT_PRINT_DEC "%s", \ |
169 | (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
77d71bdb | 170 | } while (0) |
171 | ||
a0313320 | 172 | #endif |
173 | ||
174 | #ifndef PUT_SDB_VAL | |
175 | #define PUT_SDB_VAL(a) \ | |
176 | ( fputs ("\t.val\t", asm_out_file), \ | |
177 | output_addr_const (asm_out_file, (a)), \ | |
178 | fprintf (asm_out_file, SDB_DELIM)) | |
179 | #endif | |
180 | ||
181 | #ifndef PUT_SDB_DEF | |
182 | #define PUT_SDB_DEF(a) \ | |
183 | do { fprintf (asm_out_file, "\t.def\t"); \ | |
3b8f8a40 | 184 | assemble_name (asm_out_file, a); \ |
a0313320 | 185 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
186 | #endif | |
187 | ||
188 | #ifndef PUT_SDB_PLAIN_DEF | |
189 | #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM) | |
190 | #endif | |
191 | ||
192 | #ifndef PUT_SDB_ENDEF | |
193 | #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file) | |
194 | #endif | |
195 | ||
196 | #ifndef PUT_SDB_TYPE | |
197 | #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM) | |
198 | #endif | |
199 | ||
200 | #ifndef PUT_SDB_SIZE | |
77d71bdb | 201 | #define PUT_SDB_SIZE(a) \ |
202 | do { \ | |
85aa12f7 | 203 | fprintf (asm_out_file, "\t.size\t" HOST_WIDE_INT_PRINT_DEC "%s", \ |
204 | (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
77d71bdb | 205 | } while(0) |
a0313320 | 206 | #endif |
207 | ||
208 | #ifndef PUT_SDB_START_DIM | |
209 | #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t") | |
210 | #endif | |
211 | ||
212 | #ifndef PUT_SDB_NEXT_DIM | |
213 | #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a) | |
214 | #endif | |
215 | ||
216 | #ifndef PUT_SDB_LAST_DIM | |
217 | #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM) | |
218 | #endif | |
219 | ||
220 | #ifndef PUT_SDB_TAG | |
221 | #define PUT_SDB_TAG(a) \ | |
222 | do { fprintf (asm_out_file, "\t.tag\t"); \ | |
3de7e2d9 | 223 | assemble_name (asm_out_file, a); \ |
a0313320 | 224 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
225 | #endif | |
226 | ||
227 | #ifndef PUT_SDB_BLOCK_START | |
228 | #define PUT_SDB_BLOCK_START(LINE) \ | |
229 | fprintf (asm_out_file, \ | |
230 | "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
231 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
232 | #endif | |
233 | ||
234 | #ifndef PUT_SDB_BLOCK_END | |
235 | #define PUT_SDB_BLOCK_END(LINE) \ | |
236 | fprintf (asm_out_file, \ | |
237 | "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
238 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
239 | #endif | |
240 | ||
241 | #ifndef PUT_SDB_FUNCTION_START | |
242 | #define PUT_SDB_FUNCTION_START(LINE) \ | |
243 | fprintf (asm_out_file, \ | |
244 | "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
245 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
246 | #endif | |
247 | ||
248 | #ifndef PUT_SDB_FUNCTION_END | |
249 | #define PUT_SDB_FUNCTION_END(LINE) \ | |
250 | fprintf (asm_out_file, \ | |
251 | "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
252 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
253 | #endif | |
254 | ||
a0313320 | 255 | /* Return the sdb tag identifier string for TYPE |
1e625a2e | 256 | if TYPE has already been defined; otherwise return a null pointer. */ |
a0313320 | 257 | |
083fba85 | 258 | #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type) |
a0313320 | 259 | |
260 | /* Set the sdb tag identifier string for TYPE to NAME. */ | |
261 | ||
262 | #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \ | |
fb80456a | 263 | TYPE_SYMTAB_POINTER (TYPE) = (const char *)(NAME) |
a0313320 | 264 | |
265 | /* Return the name (a string) of the struct, union or enum tag | |
266 | described by the TREE_LIST node LINK. This is 0 for an anonymous one. */ | |
267 | ||
268 | #define TAG_NAME(link) \ | |
269 | (((link) && TREE_PURPOSE ((link)) \ | |
270 | && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \ | |
271 | ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0) | |
272 | ||
273 | /* Ensure we don't output a negative line number. */ | |
274 | #define MAKE_LINE_SAFE(line) \ | |
27d0c333 | 275 | if ((int) line <= sdb_begin_function_line) \ |
276 | line = sdb_begin_function_line + 1 | |
33d72cae | 277 | |
278 | /* Perform linker optimization of merging header file definitions together | |
279 | for targets with MIPS_DEBUGGING_INFO defined. This won't work without a | |
280 | post 960826 version of GAS. Nothing breaks with earlier versions of GAS, | |
281 | the optimization just won't be done. The native assembler already has the | |
282 | necessary support. */ | |
283 | ||
284 | #ifdef MIPS_DEBUGGING_INFO | |
285 | ||
33d72cae | 286 | /* ECOFF linkers have an optimization that does the same kind of thing as |
287 | N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the | |
288 | executable. To achieve this, GCC must output a .file for each file | |
289 | name change. */ | |
290 | ||
291 | /* This is a stack of input files. */ | |
292 | ||
293 | struct sdb_file | |
294 | { | |
295 | struct sdb_file *next; | |
34c5b0f7 | 296 | const char *name; |
33d72cae | 297 | }; |
298 | ||
299 | /* This is the top of the stack. */ | |
300 | ||
301 | static struct sdb_file *current_file; | |
302 | ||
303 | #endif /* MIPS_DEBUGGING_INFO */ | |
3b8f8a40 | 304 | |
c140b944 | 305 | /* The debug hooks structure. */ |
e42f6423 | 306 | const struct gcc_debug_hooks sdb_debug_hooks = |
b896d81b | 307 | { |
2b49746a | 308 | sdbout_init, /* init */ |
309 | sdbout_finish, /* finish */ | |
47306a5d | 310 | debug_nothing_void, /* assembly_start */ |
2b49746a | 311 | debug_nothing_int_charstar, /* define */ |
312 | debug_nothing_int_charstar, /* undef */ | |
313 | sdbout_start_source_file, /* start_source_file */ | |
314 | sdbout_end_source_file, /* end_source_file */ | |
315 | sdbout_begin_block, /* begin_block */ | |
316 | sdbout_end_block, /* end_block */ | |
5493cb9a | 317 | debug_true_const_tree, /* ignore_block */ |
2b49746a | 318 | sdbout_source_line, /* source_line */ |
f76df888 | 319 | #ifdef MIPS_DEBUGGING_INFO |
320 | /* Defer on MIPS systems so that parameter descriptions follow | |
321 | function entry. */ | |
2b49746a | 322 | debug_nothing_int_charstar, /* begin_prologue */ |
323 | sdbout_end_prologue, /* end_prologue */ | |
f76df888 | 324 | #else |
2b49746a | 325 | sdbout_begin_prologue, /* begin_prologue */ |
326 | debug_nothing_int_charstar, /* end_prologue */ | |
f76df888 | 327 | #endif |
cfe7b52e | 328 | debug_nothing_int_charstar, /* begin_epilogue */ |
2b49746a | 329 | sdbout_end_epilogue, /* end_epilogue */ |
330 | sdbout_begin_function, /* begin_function */ | |
331 | sdbout_end_function, /* end_function */ | |
332 | debug_nothing_tree, /* function_decl */ | |
333 | sdbout_global_decl, /* global_decl */ | |
14173a2c | 334 | sdbout_symbol, /* type_decl */ |
df4d540f | 335 | debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ |
2b49746a | 336 | debug_nothing_tree, /* deferred_inline_function */ |
337 | debug_nothing_tree, /* outlining_inline_function */ | |
338 | sdbout_label, /* label */ | |
5923a5e7 | 339 | debug_nothing_int, /* handle_pch */ |
7a4afb3f | 340 | debug_nothing_rtx, /* var_location */ |
1897b881 | 341 | debug_nothing_void, /* switch_text_section */ |
d907ec51 | 342 | debug_nothing_tree, /* direct_call */ |
343 | debug_nothing_tree_int, /* virtual_call_token */ | |
b922281a | 344 | debug_nothing_rtx_rtx, /* copy_call_info */ |
d907ec51 | 345 | debug_nothing_uid, /* virtual_call */ |
8d17cbdd | 346 | debug_nothing_tree_tree, /* set_name */ |
929d2a90 | 347 | 0, /* start_end_main_source_file */ |
348 | TYPE_SYMTAB_IS_POINTER /* tree_type_symtab_field */ | |
b896d81b | 349 | }; |
a0313320 | 350 | |
351 | /* Return a unique string to name an anonymous type. */ | |
352 | ||
353 | static char * | |
3b8f8a40 | 354 | gen_fake_label (void) |
a0313320 | 355 | { |
356 | char label[10]; | |
357 | char *labelstr; | |
2c4067e8 | 358 | sprintf (label, ".%dfake", unnamed_struct_number); |
a0313320 | 359 | unnamed_struct_number++; |
92192583 | 360 | labelstr = xstrdup (label); |
a0313320 | 361 | return labelstr; |
362 | } | |
3b8f8a40 | 363 | |
a0313320 | 364 | /* Return the number which describes TYPE for SDB. |
365 | For pointers, etc., this function is recursive. | |
366 | Each record, union or enumeral type must already have had a | |
367 | tag number output. */ | |
368 | ||
369 | /* The number is given by d6d5d4d3d2d1bbbb | |
370 | where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array. | |
371 | Thus, char *foo () has bbbb=T_CHAR | |
372 | d1=D_FCN | |
373 | d2=D_PTR | |
374 | N_BTMASK= 017 1111 basic type field. | |
375 | N_TSHIFT= 2 derived type shift | |
376 | N_BTSHFT= 4 Basic type shift */ | |
377 | ||
378 | /* Produce the number that describes a pointer, function or array type. | |
379 | PREV is the number describing the target, value or element type. | |
380 | DT_type describes how to transform that type. */ | |
c41bf978 | 381 | #define PUSH_DERIVED_LEVEL(DT_type,PREV) \ |
47c251e5 | 382 | ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \ |
383 | | ((int) DT_type << (int) N_BTSHFT) \ | |
384 | | ((PREV) & (int) N_BTMASK)) | |
a0313320 | 385 | |
386 | /* Number of elements used in sdb_dims. */ | |
387 | static int sdb_n_dims = 0; | |
388 | ||
389 | /* Table of array dimensions of current type. */ | |
390 | static int sdb_dims[SDB_MAX_DIM]; | |
391 | ||
392 | /* Size of outermost array currently being processed. */ | |
393 | static int sdb_type_size = -1; | |
394 | ||
395 | static int | |
3b8f8a40 | 396 | plain_type (tree type) |
a0313320 | 397 | { |
d4e7442d | 398 | int val = plain_type_1 (type, 0); |
a0313320 | 399 | |
400 | /* If we have already saved up some array dimensions, print them now. */ | |
401 | if (sdb_n_dims > 0) | |
402 | { | |
403 | int i; | |
404 | PUT_SDB_START_DIM; | |
405 | for (i = sdb_n_dims - 1; i > 0; i--) | |
406 | PUT_SDB_NEXT_DIM (sdb_dims[i]); | |
407 | PUT_SDB_LAST_DIM (sdb_dims[0]); | |
408 | sdb_n_dims = 0; | |
409 | ||
410 | sdb_type_size = int_size_in_bytes (type); | |
411 | /* Don't kill sdb if type is not laid out or has variable size. */ | |
412 | if (sdb_type_size < 0) | |
413 | sdb_type_size = 0; | |
414 | } | |
415 | /* If we have computed the size of an array containing this type, | |
416 | print it now. */ | |
417 | if (sdb_type_size >= 0) | |
418 | { | |
419 | PUT_SDB_SIZE (sdb_type_size); | |
420 | sdb_type_size = -1; | |
421 | } | |
422 | return val; | |
423 | } | |
424 | ||
3d95713a | 425 | static int |
3b8f8a40 | 426 | template_name_p (tree name) |
3d95713a | 427 | { |
19cb6b50 | 428 | const char *ptr = IDENTIFIER_POINTER (name); |
3d95713a | 429 | while (*ptr && *ptr != '<') |
430 | ptr++; | |
431 | ||
432 | return *ptr != '\0'; | |
433 | } | |
434 | ||
a0313320 | 435 | static void |
3b8f8a40 | 436 | sdbout_record_type_name (tree type) |
a0313320 | 437 | { |
76ab50f8 | 438 | const char *name = 0; |
a0313320 | 439 | int no_name; |
440 | ||
441 | if (KNOWN_TYPE_TAG (type)) | |
442 | return; | |
443 | ||
444 | if (TYPE_NAME (type) != 0) | |
445 | { | |
446 | tree t = 0; | |
76ab50f8 | 447 | |
a0313320 | 448 | /* Find the IDENTIFIER_NODE for the type name. */ |
449 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7d494510 | 450 | t = TYPE_NAME (type); |
581197a9 | 451 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
a0313320 | 452 | { |
453 | t = DECL_NAME (TYPE_NAME (type)); | |
3d95713a | 454 | /* The DECL_NAME for templates includes "<>", which breaks |
455 | most assemblers. Use its assembler name instead, which | |
456 | has been mangled into being safe. */ | |
457 | if (t && template_name_p (t)) | |
458 | t = DECL_ASSEMBLER_NAME (TYPE_NAME (type)); | |
a0313320 | 459 | } |
a0313320 | 460 | |
461 | /* Now get the name as a string, or invent one. */ | |
3d95713a | 462 | if (t != NULL_TREE) |
a0313320 | 463 | name = IDENTIFIER_POINTER (t); |
464 | } | |
465 | ||
466 | no_name = (name == 0 || *name == 0); | |
467 | if (no_name) | |
468 | name = gen_fake_label (); | |
469 | ||
470 | SET_KNOWN_TYPE_TAG (type, name); | |
471 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
472 | if (no_name) | |
473 | sdbout_queue_anonymous_type (type); | |
474 | #endif | |
475 | } | |
476 | ||
d4e7442d | 477 | /* Return the .type value for type TYPE. |
478 | ||
479 | LEVEL indicates how many levels deep we have recursed into the type. | |
480 | The SDB debug format can only represent 6 derived levels of types. | |
481 | After that, we must output inaccurate debug info. We deliberately | |
482 | stop before the 7th level, so that ADA recursive types will not give an | |
483 | infinite loop. */ | |
484 | ||
a0313320 | 485 | static int |
3b8f8a40 | 486 | plain_type_1 (tree type, int level) |
a0313320 | 487 | { |
488 | if (type == 0) | |
489 | type = void_type_node; | |
d4e7442d | 490 | else if (type == error_mark_node) |
a0313320 | 491 | type = integer_type_node; |
d4e7442d | 492 | else |
493 | type = TYPE_MAIN_VARIANT (type); | |
a0313320 | 494 | |
495 | switch (TREE_CODE (type)) | |
496 | { | |
497 | case VOID_TYPE: | |
fa67d8e8 | 498 | case NULLPTR_TYPE: |
a0313320 | 499 | return T_VOID; |
37e26411 | 500 | case BOOLEAN_TYPE: |
a0313320 | 501 | case INTEGER_TYPE: |
502 | { | |
503 | int size = int_size_in_bytes (type) * BITS_PER_UNIT; | |
477f73a0 | 504 | |
505 | /* Carefully distinguish all the standard types of C, | |
506 | without messing up if the language is not C. | |
507 | Note that we check only for the names that contain spaces; | |
508 | other names might occur by coincidence in other languages. */ | |
509 | if (TYPE_NAME (type) != 0 | |
510 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
511 | && DECL_NAME (TYPE_NAME (type)) != 0 | |
512 | && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE) | |
513 | { | |
0d95286f | 514 | const char *const name |
fb1f4ef4 | 515 | = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); |
477f73a0 | 516 | |
220345e0 | 517 | if (!strcmp (name, "char")) |
518 | return T_CHAR; | |
477f73a0 | 519 | if (!strcmp (name, "unsigned char")) |
520 | return T_UCHAR; | |
521 | if (!strcmp (name, "signed char")) | |
522 | return T_CHAR; | |
220345e0 | 523 | if (!strcmp (name, "int")) |
524 | return T_INT; | |
477f73a0 | 525 | if (!strcmp (name, "unsigned int")) |
526 | return T_UINT; | |
527 | if (!strcmp (name, "short int")) | |
528 | return T_SHORT; | |
529 | if (!strcmp (name, "short unsigned int")) | |
530 | return T_USHORT; | |
531 | if (!strcmp (name, "long int")) | |
532 | return T_LONG; | |
533 | if (!strcmp (name, "long unsigned int")) | |
534 | return T_ULONG; | |
535 | } | |
536 | ||
220345e0 | 537 | if (size == INT_TYPE_SIZE) |
78a8ed03 | 538 | return (TYPE_UNSIGNED (type) ? T_UINT : T_INT); |
a0313320 | 539 | if (size == CHAR_TYPE_SIZE) |
78a8ed03 | 540 | return (TYPE_UNSIGNED (type) ? T_UCHAR : T_CHAR); |
a0313320 | 541 | if (size == SHORT_TYPE_SIZE) |
78a8ed03 | 542 | return (TYPE_UNSIGNED (type) ? T_USHORT : T_SHORT); |
35ede5b0 | 543 | if (size == LONG_TYPE_SIZE) |
78a8ed03 | 544 | return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); |
2a949ded | 545 | if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */ |
78a8ed03 | 546 | return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); |
a0313320 | 547 | return 0; |
548 | } | |
549 | ||
550 | case REAL_TYPE: | |
551 | { | |
ad31ad59 | 552 | int precision = TYPE_PRECISION (type); |
553 | if (precision == FLOAT_TYPE_SIZE) | |
a0313320 | 554 | return T_FLOAT; |
ad31ad59 | 555 | if (precision == DOUBLE_TYPE_SIZE) |
a0313320 | 556 | return T_DOUBLE; |
ad31ad59 | 557 | #ifdef EXTENDED_SDB_BASIC_TYPES |
558 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
559 | return T_LNGDBL; | |
997d68fe | 560 | #else |
561 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
562 | return T_DOUBLE; /* better than nothing */ | |
ad31ad59 | 563 | #endif |
a0313320 | 564 | return 0; |
565 | } | |
566 | ||
567 | case ARRAY_TYPE: | |
568 | { | |
569 | int m; | |
d4e7442d | 570 | if (level >= 6) |
571 | return T_VOID; | |
572 | else | |
573 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
a0313320 | 574 | if (sdb_n_dims < SDB_MAX_DIM) |
575 | sdb_dims[sdb_n_dims++] | |
576 | = (TYPE_DOMAIN (type) | |
5d844ba2 | 577 | && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0 |
578 | && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0 | |
579 | && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
580 | && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) | |
581 | ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
582 | - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1) | |
a0313320 | 583 | : 0); |
5d844ba2 | 584 | |
a0313320 | 585 | return PUSH_DERIVED_LEVEL (DT_ARY, m); |
586 | } | |
587 | ||
588 | case RECORD_TYPE: | |
589 | case UNION_TYPE: | |
7f8a347a | 590 | case QUAL_UNION_TYPE: |
a0313320 | 591 | case ENUMERAL_TYPE: |
592 | { | |
fb80456a | 593 | const char *tag; |
a0313320 | 594 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
595 | sdbout_record_type_name (type); | |
596 | #endif | |
597 | #ifndef SDB_ALLOW_UNKNOWN_REFERENCES | |
598 | if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0) | |
599 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
600 | || TYPE_MODE (type) != VOIDmode | |
601 | #endif | |
602 | ) | |
603 | #endif | |
604 | { | |
605 | /* Output the referenced structure tag name | |
606 | only if the .def has already been finished. | |
607 | At least on 386, the Unix assembler | |
608 | cannot handle forward references to tags. */ | |
a92771b8 | 609 | /* But the 88100, it requires them, sigh... */ |
610 | /* And the MIPS requires unknown refs as well... */ | |
a0313320 | 611 | tag = KNOWN_TYPE_TAG (type); |
612 | PUT_SDB_TAG (tag); | |
613 | /* These 3 lines used to follow the close brace. | |
614 | However, a size of 0 without a tag implies a tag of 0, | |
615 | so if we don't know a tag, we can't mention the size. */ | |
616 | sdb_type_size = int_size_in_bytes (type); | |
617 | if (sdb_type_size < 0) | |
618 | sdb_type_size = 0; | |
619 | } | |
620 | return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT | |
621 | : (TREE_CODE (type) == UNION_TYPE) ? T_UNION | |
7f8a347a | 622 | : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION |
a0313320 | 623 | : T_ENUM); |
624 | } | |
625 | case POINTER_TYPE: | |
626 | case REFERENCE_TYPE: | |
627 | { | |
d4e7442d | 628 | int m; |
629 | if (level >= 6) | |
630 | return T_VOID; | |
631 | else | |
632 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
a0313320 | 633 | return PUSH_DERIVED_LEVEL (DT_PTR, m); |
634 | } | |
635 | case FUNCTION_TYPE: | |
636 | case METHOD_TYPE: | |
637 | { | |
d4e7442d | 638 | int m; |
639 | if (level >= 6) | |
640 | return T_VOID; | |
641 | else | |
642 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
a0313320 | 643 | return PUSH_DERIVED_LEVEL (DT_FCN, m); |
644 | } | |
645 | default: | |
646 | return 0; | |
647 | } | |
648 | } | |
3b8f8a40 | 649 | |
a0313320 | 650 | /* Output the symbols defined in block number DO_BLOCK. |
a0313320 | 651 | |
652 | This function works by walking the tree structure of blocks, | |
653 | counting blocks until it finds the desired block. */ | |
654 | ||
655 | static int do_block = 0; | |
656 | ||
a0313320 | 657 | static void |
3b8f8a40 | 658 | sdbout_block (tree block) |
a0313320 | 659 | { |
660 | while (block) | |
661 | { | |
662 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
663 | if (TREE_USED (block)) | |
664 | { | |
665 | /* When we reach the specified block, output its symbols. */ | |
5846cb0f | 666 | if (BLOCK_NUMBER (block) == do_block) |
667 | sdbout_syms (BLOCK_VARS (block)); | |
a0313320 | 668 | |
669 | /* If we are past the specified block, stop the scan. */ | |
5846cb0f | 670 | if (BLOCK_NUMBER (block) > do_block) |
a0313320 | 671 | return; |
672 | ||
a0313320 | 673 | /* Scan the blocks within this block. */ |
674 | sdbout_block (BLOCK_SUBBLOCKS (block)); | |
675 | } | |
676 | ||
677 | block = BLOCK_CHAIN (block); | |
678 | } | |
679 | } | |
3b8f8a40 | 680 | |
a0313320 | 681 | /* Call sdbout_symbol on each decl in the chain SYMS. */ |
682 | ||
683 | static void | |
3b8f8a40 | 684 | sdbout_syms (tree syms) |
a0313320 | 685 | { |
686 | while (syms) | |
687 | { | |
efb7ac84 | 688 | if (TREE_CODE (syms) != LABEL_DECL) |
689 | sdbout_symbol (syms, 1); | |
a0313320 | 690 | syms = TREE_CHAIN (syms); |
691 | } | |
692 | } | |
693 | ||
694 | /* Output SDB information for a symbol described by DECL. | |
695 | LOCAL is nonzero if the symbol is not file-scope. */ | |
696 | ||
697 | void | |
3b8f8a40 | 698 | sdbout_symbol (tree decl, int local) |
a0313320 | 699 | { |
a0313320 | 700 | tree type = TREE_TYPE (decl); |
701 | tree context = NULL_TREE; | |
702 | rtx value; | |
703 | int regno = -1; | |
fb1f4ef4 | 704 | const char *name; |
a0313320 | 705 | |
ec4f62a9 | 706 | /* If we are called before sdbout_init is run, just save the symbol |
707 | for later. */ | |
708 | if (!sdbout_initialized) | |
709 | { | |
710 | preinit_symbols = tree_cons (0, decl, preinit_symbols); | |
711 | return; | |
712 | } | |
713 | ||
b2ee5d20 | 714 | sdbout_one_type (type); |
715 | ||
a0313320 | 716 | switch (TREE_CODE (decl)) |
717 | { | |
718 | case CONST_DECL: | |
719 | /* Enum values are defined by defining the enum type. */ | |
720 | return; | |
721 | ||
722 | case FUNCTION_DECL: | |
723 | /* Don't mention a nested function under its parent. */ | |
724 | context = decl_function_context (decl); | |
725 | if (context == current_function_decl) | |
726 | return; | |
d9904a8e | 727 | /* Check DECL_INITIAL to distinguish declarations from definitions. |
728 | Don't output debug info here for declarations; they will have | |
729 | a DECL_INITIAL value of 0. */ | |
730 | if (! DECL_INITIAL (decl)) | |
a0313320 | 731 | return; |
e16ceb8e | 732 | if (!MEM_P (DECL_RTL (decl)) |
a0313320 | 733 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) |
734 | return; | |
735 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
736 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
737 | PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT); | |
738 | break; | |
739 | ||
740 | case TYPE_DECL: | |
741 | /* Done with tagged types. */ | |
742 | if (DECL_NAME (decl) == 0) | |
743 | return; | |
b2ee5d20 | 744 | if (DECL_IGNORED_P (decl)) |
745 | return; | |
2a9fdfe1 | 746 | /* Don't output intrinsic types. GAS chokes on SDB .def |
747 | statements that contain identifiers with embedded spaces | |
748 | (eg "unsigned long"). */ | |
749 | if (DECL_IS_BUILTIN (decl)) | |
750 | return; | |
a0313320 | 751 | |
752 | /* Output typedef name. */ | |
3d95713a | 753 | if (template_name_p (DECL_NAME (decl))) |
754 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
755 | else | |
756 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl))); | |
a0313320 | 757 | PUT_SDB_SCL (C_TPDEF); |
758 | break; | |
759 | ||
760 | case PARM_DECL: | |
761 | /* Parm decls go in their own separate chains | |
762 | and are output by sdbout_reg_parms and sdbout_parms. */ | |
04e579b6 | 763 | gcc_unreachable (); |
a0313320 | 764 | |
765 | case VAR_DECL: | |
766 | /* Don't mention a variable that is external. | |
767 | Let the file that defines it describe it. */ | |
2cf6e2c5 | 768 | if (DECL_EXTERNAL (decl)) |
a0313320 | 769 | return; |
770 | ||
b2ee5d20 | 771 | /* Ignore __FUNCTION__, etc. */ |
772 | if (DECL_IGNORED_P (decl)) | |
773 | return; | |
774 | ||
a0313320 | 775 | /* If there was an error in the declaration, don't dump core |
776 | if there is no RTL associated with the variable doesn't | |
777 | exist. */ | |
2f52aa25 | 778 | if (!DECL_RTL_SET_P (decl)) |
a0313320 | 779 | return; |
780 | ||
40734805 | 781 | SET_DECL_RTL (decl, |
46b5e7dc | 782 | eliminate_regs (DECL_RTL (decl), VOIDmode, NULL_RTX)); |
8d1c3ddc | 783 | #ifdef LEAF_REG_REMAP |
b3b67b7c | 784 | if (current_function_uses_only_leaf_regs) |
8d1c3ddc | 785 | leaf_renumber_regs_insn (DECL_RTL (decl)); |
786 | #endif | |
787 | value = DECL_RTL (decl); | |
a0313320 | 788 | |
789 | /* Don't mention a variable at all | |
790 | if it was completely optimized into nothingness. | |
791 | ||
792 | If DECL was from an inline function, then its rtl | |
793 | is not identically the rtl that was used in this | |
794 | particular compilation. */ | |
8ad4c111 | 795 | if (REG_P (value)) |
a0313320 | 796 | { |
61ef2048 | 797 | regno = REGNO (value); |
a0313320 | 798 | if (regno >= FIRST_PSEUDO_REGISTER) |
a0313320 | 799 | return; |
800 | } | |
8d1c3ddc | 801 | else if (GET_CODE (value) == SUBREG) |
a0313320 | 802 | { |
a0313320 | 803 | while (GET_CODE (value) == SUBREG) |
701e46d0 | 804 | value = SUBREG_REG (value); |
8ad4c111 | 805 | if (REG_P (value)) |
a0313320 | 806 | { |
701e46d0 | 807 | if (REGNO (value) >= FIRST_PSEUDO_REGISTER) |
8d1c3ddc | 808 | return; |
a0313320 | 809 | } |
61ef2048 | 810 | regno = REGNO (alter_subreg (&value)); |
811 | SET_DECL_RTL (decl, value); | |
a0313320 | 812 | } |
e8c015db | 813 | /* Don't output anything if an auto variable |
814 | gets RTL that is static. | |
815 | GAS version 2.2 can't handle such output. */ | |
e16ceb8e | 816 | else if (MEM_P (value) && CONSTANT_P (XEXP (value, 0)) |
e8c015db | 817 | && ! TREE_STATIC (decl)) |
818 | return; | |
a0313320 | 819 | |
820 | /* Emit any structure, union, or enum type that has not been output. | |
821 | This occurs for tag-less structs (et al) used to declare variables | |
822 | within functions. */ | |
823 | if (TREE_CODE (type) == ENUMERAL_TYPE | |
824 | || TREE_CODE (type) == RECORD_TYPE | |
7f8a347a | 825 | || TREE_CODE (type) == UNION_TYPE |
826 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
a0313320 | 827 | { |
4b72716d | 828 | if (COMPLETE_TYPE_P (type) /* not a forward reference */ |
a0313320 | 829 | && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */ |
830 | sdbout_one_type (type); | |
831 | } | |
832 | ||
833 | /* Defer SDB information for top-level initialized variables! */ | |
834 | if (! local | |
e16ceb8e | 835 | && MEM_P (value) |
a0313320 | 836 | && DECL_INITIAL (decl)) |
837 | return; | |
838 | ||
47b68a89 | 839 | /* C++ in 2.3 makes nameless symbols. That will be fixed later. |
840 | For now, avoid crashing. */ | |
841 | if (DECL_NAME (decl) == NULL_TREE) | |
842 | return; | |
843 | ||
a0313320 | 844 | /* Record the name for, starting a symtab entry. */ |
a9ffa672 | 845 | if (local) |
846 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
847 | else | |
848 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
a0313320 | 849 | |
e16ceb8e | 850 | if (MEM_P (value) |
a0313320 | 851 | && GET_CODE (XEXP (value, 0)) == SYMBOL_REF) |
852 | { | |
853 | PUT_SDB_DEF (name); | |
854 | if (TREE_PUBLIC (decl)) | |
855 | { | |
856 | PUT_SDB_VAL (XEXP (value, 0)); | |
40734805 | 857 | PUT_SDB_SCL (C_EXT); |
a0313320 | 858 | } |
859 | else | |
860 | { | |
861 | PUT_SDB_VAL (XEXP (value, 0)); | |
40734805 | 862 | PUT_SDB_SCL (C_STAT); |
a0313320 | 863 | } |
864 | } | |
865 | else if (regno >= 0) | |
866 | { | |
867 | PUT_SDB_DEF (name); | |
868 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno)); | |
869 | PUT_SDB_SCL (C_REG); | |
870 | } | |
e16ceb8e | 871 | else if (MEM_P (value) |
872 | && (MEM_P (XEXP (value, 0)) | |
8ad4c111 | 873 | || (REG_P (XEXP (value, 0)) |
13b1520b | 874 | && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM |
efb7ac84 | 875 | && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM))) |
a0313320 | 876 | /* If the value is indirect by memory or by a register |
877 | that isn't the frame pointer | |
878 | then it means the object is variable-sized and address through | |
879 | that register or stack slot. COFF has no way to represent this | |
880 | so all we can do is output the variable as a pointer. */ | |
881 | { | |
882 | PUT_SDB_DEF (name); | |
8ad4c111 | 883 | if (REG_P (XEXP (value, 0))) |
a0313320 | 884 | { |
885 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0)))); | |
886 | PUT_SDB_SCL (C_REG); | |
887 | } | |
888 | else | |
889 | { | |
890 | /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) | |
891 | (CONST_INT...)))). | |
892 | We want the value of that CONST_INT. */ | |
893 | /* Encore compiler hates a newline in a macro arg, it seems. */ | |
894 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
895 | (XEXP (XEXP (value, 0), 0))); | |
896 | PUT_SDB_SCL (C_AUTO); | |
897 | } | |
898 | ||
aa3c9856 | 899 | /* Effectively do build_pointer_type, but don't cache this type, |
900 | since it might be temporary whereas the type it points to | |
901 | might have been saved for inlining. */ | |
902 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
903 | type = make_node (POINTER_TYPE); | |
904 | TREE_TYPE (type) = TREE_TYPE (decl); | |
a0313320 | 905 | } |
e16ceb8e | 906 | else if (MEM_P (value) |
8cb85bca | 907 | && ((GET_CODE (XEXP (value, 0)) == PLUS |
8ad4c111 | 908 | && REG_P (XEXP (XEXP (value, 0), 0)) |
971ba038 | 909 | && CONST_INT_P (XEXP (XEXP (value, 0), 1))) |
8cb85bca | 910 | /* This is for variables which are at offset zero from |
911 | the frame pointer. This happens on the Alpha. | |
912 | Non-frame pointer registers are excluded above. */ | |
8ad4c111 | 913 | || (REG_P (XEXP (value, 0))))) |
a0313320 | 914 | { |
8cb85bca | 915 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
916 | or (MEM (REG...)). We want the value of that CONST_INT | |
917 | or zero. */ | |
a0313320 | 918 | PUT_SDB_DEF (name); |
919 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0))); | |
920 | PUT_SDB_SCL (C_AUTO); | |
921 | } | |
922 | else | |
923 | { | |
924 | /* It is something we don't know how to represent for SDB. */ | |
925 | return; | |
926 | } | |
927 | break; | |
99c14947 | 928 | |
929 | default: | |
930 | break; | |
a0313320 | 931 | } |
932 | PUT_SDB_TYPE (plain_type (type)); | |
933 | PUT_SDB_ENDEF; | |
934 | } | |
3b8f8a40 | 935 | |
a0313320 | 936 | /* Output SDB information for a top-level initialized variable |
937 | that has been delayed. */ | |
938 | ||
b29760a8 | 939 | static void |
3b8f8a40 | 940 | sdbout_toplevel_data (tree decl) |
a0313320 | 941 | { |
942 | tree type = TREE_TYPE (decl); | |
943 | ||
bd1802ca | 944 | if (DECL_IGNORED_P (decl)) |
945 | return; | |
946 | ||
04e579b6 | 947 | gcc_assert (TREE_CODE (decl) == VAR_DECL); |
948 | gcc_assert (MEM_P (DECL_RTL (decl))); | |
949 | gcc_assert (DECL_INITIAL (decl)); | |
a0313320 | 950 | |
951 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
952 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
953 | if (TREE_PUBLIC (decl)) | |
954 | { | |
955 | PUT_SDB_SCL (C_EXT); | |
956 | } | |
957 | else | |
958 | { | |
959 | PUT_SDB_SCL (C_STAT); | |
960 | } | |
961 | PUT_SDB_TYPE (plain_type (type)); | |
962 | PUT_SDB_ENDEF; | |
963 | } | |
3b8f8a40 | 964 | |
a0313320 | 965 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
966 | ||
a92771b8 | 967 | /* Machinery to record and output anonymous types. */ |
a0313320 | 968 | |
a0313320 | 969 | static void |
3b8f8a40 | 970 | sdbout_queue_anonymous_type (tree type) |
a0313320 | 971 | { |
d7c47c0e | 972 | anonymous_types = tree_cons (NULL_TREE, type, anonymous_types); |
a0313320 | 973 | } |
974 | ||
975 | static void | |
3b8f8a40 | 976 | sdbout_dequeue_anonymous_types (void) |
a0313320 | 977 | { |
19cb6b50 | 978 | tree types, link; |
a0313320 | 979 | |
980 | while (anonymous_types) | |
981 | { | |
982 | types = nreverse (anonymous_types); | |
983 | anonymous_types = NULL_TREE; | |
984 | ||
985 | for (link = types; link; link = TREE_CHAIN (link)) | |
986 | { | |
19cb6b50 | 987 | tree type = TREE_VALUE (link); |
a0313320 | 988 | |
3e3d68cf | 989 | if (type && ! TREE_ASM_WRITTEN (type)) |
a0313320 | 990 | sdbout_one_type (type); |
991 | } | |
992 | } | |
993 | } | |
994 | ||
995 | #endif | |
3b8f8a40 | 996 | |
a0313320 | 997 | /* Given a chain of ..._TYPE nodes, all of which have names, |
998 | output definitions of those names, as typedefs. */ | |
999 | ||
1000 | void | |
3b8f8a40 | 1001 | sdbout_types (tree types) |
a0313320 | 1002 | { |
19cb6b50 | 1003 | tree link; |
a0313320 | 1004 | |
1005 | for (link = types; link; link = TREE_CHAIN (link)) | |
1006 | sdbout_one_type (link); | |
1007 | ||
1008 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1009 | sdbout_dequeue_anonymous_types (); | |
1010 | #endif | |
1011 | } | |
1012 | ||
1013 | static void | |
3b8f8a40 | 1014 | sdbout_type (tree type) |
a0313320 | 1015 | { |
a0313320 | 1016 | if (type == error_mark_node) |
1017 | type = integer_type_node; | |
1018 | PUT_SDB_TYPE (plain_type (type)); | |
1019 | } | |
1020 | ||
1021 | /* Output types of the fields of type TYPE, if they are structs. | |
1022 | ||
1023 | Formerly did not chase through pointer types, since that could be circular. | |
1024 | They must come before TYPE, since forward refs are not allowed. | |
1025 | Now james@bigtex.cactus.org says to try them. */ | |
1026 | ||
1027 | static void | |
3b8f8a40 | 1028 | sdbout_field_types (tree type) |
a0313320 | 1029 | { |
1030 | tree tail; | |
997d68fe | 1031 | |
a0313320 | 1032 | for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail)) |
9d7fa7f0 | 1033 | /* This condition should match the one for emitting the actual |
1034 | members below. */ | |
347e6aec | 1035 | if (TREE_CODE (tail) == FIELD_DECL |
9d7fa7f0 | 1036 | && DECL_NAME (tail) |
1037 | && DECL_SIZE (tail) | |
1038 | && host_integerp (DECL_SIZE (tail), 1) | |
1039 | && host_integerp (bit_position (tail), 0)) | |
347e6aec | 1040 | { |
1041 | if (POINTER_TYPE_P (TREE_TYPE (tail))) | |
1042 | sdbout_one_type (TREE_TYPE (TREE_TYPE (tail))); | |
1043 | else | |
1044 | sdbout_one_type (TREE_TYPE (tail)); | |
1045 | } | |
a0313320 | 1046 | } |
1047 | ||
1048 | /* Use this to put out the top level defined record and union types | |
1049 | for later reference. If this is a struct with a name, then put that | |
1050 | name out. Other unnamed structs will have .xxfake labels generated so | |
1051 | that they may be referred to later. | |
1052 | The label will be stored in the KNOWN_TYPE_TAG slot of a type. | |
1053 | It may NOT be called recursively. */ | |
1054 | ||
1055 | static void | |
3b8f8a40 | 1056 | sdbout_one_type (tree type) |
a0313320 | 1057 | { |
1ae11ad7 | 1058 | if (current_function_decl != NULL_TREE |
1059 | && DECL_SECTION_NAME (current_function_decl) != NULL_TREE) | |
1060 | ; /* Don't change section amid function. */ | |
1061 | else | |
2f14b1f9 | 1062 | switch_to_section (text_section); |
a0313320 | 1063 | |
1064 | switch (TREE_CODE (type)) | |
1065 | { | |
1066 | case RECORD_TYPE: | |
1067 | case UNION_TYPE: | |
7f8a347a | 1068 | case QUAL_UNION_TYPE: |
a0313320 | 1069 | case ENUMERAL_TYPE: |
1070 | type = TYPE_MAIN_VARIANT (type); | |
1071 | /* Don't output a type twice. */ | |
1072 | if (TREE_ASM_WRITTEN (type)) | |
1073 | /* James said test TREE_ASM_BEING_WRITTEN here. */ | |
1074 | return; | |
1075 | ||
1076 | /* Output nothing if type is not yet defined. */ | |
4b72716d | 1077 | if (!COMPLETE_TYPE_P (type)) |
a0313320 | 1078 | return; |
1079 | ||
1080 | TREE_ASM_WRITTEN (type) = 1; | |
3b8f8a40 | 1081 | |
a0313320 | 1082 | /* This is reputed to cause trouble with the following case, |
ed689d5e | 1083 | but perhaps checking TYPE_SIZE above will fix it. */ |
a0313320 | 1084 | |
de44dcb9 | 1085 | /* Here is a testcase: |
a0313320 | 1086 | |
1087 | struct foo { | |
1088 | struct badstr *bbb; | |
1089 | } forwardref; | |
1090 | ||
1091 | typedef struct intermediate { | |
1092 | int aaaa; | |
1093 | } intermediate_ref; | |
1094 | ||
1095 | typedef struct badstr { | |
1096 | int ccccc; | |
1097 | } badtype; */ | |
1098 | ||
a0313320 | 1099 | /* This change, which ought to make better output, |
1100 | used to make the COFF assembler unhappy. | |
1101 | Changes involving KNOWN_TYPE_TAG may fix the problem. */ | |
1102 | /* Before really doing anything, output types we want to refer to. */ | |
1103 | /* Note that in version 1 the following two lines | |
1104 | are not used if forward references are in use. */ | |
1105 | if (TREE_CODE (type) != ENUMERAL_TYPE) | |
1106 | sdbout_field_types (type); | |
a0313320 | 1107 | |
1108 | /* Output a structure type. */ | |
1109 | { | |
1110 | int size = int_size_in_bytes (type); | |
ef2c4a29 | 1111 | int member_scl = 0; |
a0313320 | 1112 | tree tem; |
1113 | ||
1114 | /* Record the type tag, but not in its permanent place just yet. */ | |
1115 | sdbout_record_type_name (type); | |
1116 | ||
1117 | PUT_SDB_DEF (KNOWN_TYPE_TAG (type)); | |
1118 | ||
1119 | switch (TREE_CODE (type)) | |
1120 | { | |
1121 | case UNION_TYPE: | |
7f8a347a | 1122 | case QUAL_UNION_TYPE: |
a0313320 | 1123 | PUT_SDB_SCL (C_UNTAG); |
1124 | PUT_SDB_TYPE (T_UNION); | |
1125 | member_scl = C_MOU; | |
1126 | break; | |
1127 | ||
1128 | case RECORD_TYPE: | |
1129 | PUT_SDB_SCL (C_STRTAG); | |
1130 | PUT_SDB_TYPE (T_STRUCT); | |
1131 | member_scl = C_MOS; | |
1132 | break; | |
1133 | ||
1134 | case ENUMERAL_TYPE: | |
1135 | PUT_SDB_SCL (C_ENTAG); | |
1136 | PUT_SDB_TYPE (T_ENUM); | |
1137 | member_scl = C_MOE; | |
1138 | break; | |
99c14947 | 1139 | |
1140 | default: | |
1141 | break; | |
a0313320 | 1142 | } |
1143 | ||
1144 | PUT_SDB_SIZE (size); | |
1145 | PUT_SDB_ENDEF; | |
1146 | ||
efb7ac84 | 1147 | /* Print out the base class information with fields |
1148 | named after the types they hold. */ | |
734c98be | 1149 | /* This is only relevant to aggregate types. TYPE_BINFO is used |
7a0272bc | 1150 | for other purposes in an ENUMERAL_TYPE, so we must exclude that |
1151 | case. */ | |
f6cc6a08 | 1152 | if (TREE_CODE (type) != ENUMERAL_TYPE && TYPE_BINFO (type)) |
efb7ac84 | 1153 | { |
f6cc6a08 | 1154 | int i; |
1155 | tree binfo, child; | |
1156 | ||
1157 | for (binfo = TYPE_BINFO (type), i = 0; | |
1158 | BINFO_BASE_ITERATE (binfo, i, child); i++) | |
72d58909 | 1159 | { |
7a0272bc | 1160 | tree child_type = BINFO_TYPE (child); |
1161 | tree child_type_name; | |
48e1416a | 1162 | |
7a0272bc | 1163 | if (TYPE_NAME (child_type) == 0) |
1164 | continue; | |
1165 | if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE) | |
1166 | child_type_name = TYPE_NAME (child_type); | |
1167 | else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL) | |
1168 | { | |
1169 | child_type_name = DECL_NAME (TYPE_NAME (child_type)); | |
1170 | if (child_type_name && template_name_p (child_type_name)) | |
1171 | child_type_name | |
1172 | = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type)); | |
1173 | } | |
1174 | else | |
1175 | continue; | |
1176 | ||
7a0272bc | 1177 | PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name)); |
5d844ba2 | 1178 | PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0)); |
7a0272bc | 1179 | PUT_SDB_SCL (member_scl); |
1180 | sdbout_type (BINFO_TYPE (child)); | |
1181 | PUT_SDB_ENDEF; | |
72d58909 | 1182 | } |
efb7ac84 | 1183 | } |
1184 | ||
21dda4ee | 1185 | /* Output the individual fields. */ |
a0313320 | 1186 | |
1187 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
eddf1356 | 1188 | { |
84a5a099 | 1189 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) |
d66fbe4c | 1190 | { |
1191 | tree value = TREE_VALUE (tem); | |
1192 | ||
1193 | if (TREE_CODE (value) == CONST_DECL) | |
1194 | value = DECL_INITIAL (value); | |
1195 | ||
1196 | if (host_integerp (value, 0)) | |
1197 | { | |
1198 | PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem))); | |
1199 | PUT_SDB_INT_VAL (tree_low_cst (value, 0)); | |
1200 | PUT_SDB_SCL (C_MOE); | |
1201 | PUT_SDB_TYPE (T_MOE); | |
1202 | PUT_SDB_ENDEF; | |
1203 | } | |
1204 | } | |
eddf1356 | 1205 | } |
a0313320 | 1206 | else /* record or union type */ |
1207 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1208 | /* Output the name, type, position (in bits), size (in bits) | |
1209 | of each field. */ | |
1210 | ||
1211 | /* Omit here the nameless fields that are used to skip bits. | |
1212 | Also omit fields with variable size or position. | |
1213 | Also omit non FIELD_DECL nodes that GNU C++ may put here. */ | |
1214 | if (TREE_CODE (tem) == FIELD_DECL | |
9d7fa7f0 | 1215 | && DECL_NAME (tem) |
1216 | && DECL_SIZE (tem) | |
5d844ba2 | 1217 | && host_integerp (DECL_SIZE (tem), 1) |
1218 | && host_integerp (bit_position (tem), 0)) | |
a0313320 | 1219 | { |
fb1f4ef4 | 1220 | const char *name; |
f318d84a | 1221 | |
a9ffa672 | 1222 | name = IDENTIFIER_POINTER (DECL_NAME (tem)); |
f318d84a | 1223 | PUT_SDB_DEF (name); |
a0313320 | 1224 | if (DECL_BIT_FIELD_TYPE (tem)) |
1225 | { | |
5d844ba2 | 1226 | PUT_SDB_INT_VAL (int_bit_position (tem)); |
a0313320 | 1227 | PUT_SDB_SCL (C_FIELD); |
1228 | sdbout_type (DECL_BIT_FIELD_TYPE (tem)); | |
5d844ba2 | 1229 | PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1)); |
a0313320 | 1230 | } |
1231 | else | |
1232 | { | |
5d844ba2 | 1233 | PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT); |
a0313320 | 1234 | PUT_SDB_SCL (member_scl); |
1235 | sdbout_type (TREE_TYPE (tem)); | |
1236 | } | |
1237 | PUT_SDB_ENDEF; | |
1238 | } | |
21dda4ee | 1239 | /* Output end of a structure,union, or enumeral definition. */ |
a0313320 | 1240 | |
1241 | PUT_SDB_PLAIN_DEF ("eos"); | |
1242 | PUT_SDB_INT_VAL (size); | |
1243 | PUT_SDB_SCL (C_EOS); | |
1244 | PUT_SDB_TAG (KNOWN_TYPE_TAG (type)); | |
1245 | PUT_SDB_SIZE (size); | |
1246 | PUT_SDB_ENDEF; | |
1247 | break; | |
1248 | } | |
20167aff | 1249 | |
1250 | default: | |
1251 | break; | |
a0313320 | 1252 | } |
1253 | } | |
3b8f8a40 | 1254 | |
a0313320 | 1255 | /* The following two functions output definitions of function parameters. |
1256 | Each parameter gets a definition locating it in the parameter list. | |
1257 | Each parameter that is a register variable gets a second definition | |
1258 | locating it in the register. | |
1259 | ||
1260 | Printing or argument lists in gdb uses the definitions that | |
1261 | locate in the parameter list. But reference to the variable in | |
1262 | expressions uses preferentially the definition as a register. */ | |
1263 | ||
1264 | /* Output definitions, referring to storage in the parmlist, | |
1265 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
1266 | ||
1267 | static void | |
3b8f8a40 | 1268 | sdbout_parms (tree parms) |
a0313320 | 1269 | { |
1270 | for (; parms; parms = TREE_CHAIN (parms)) | |
1271 | if (DECL_NAME (parms)) | |
1272 | { | |
1273 | int current_sym_value = 0; | |
fb1f4ef4 | 1274 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
a0313320 | 1275 | |
1276 | if (name == 0 || *name == 0) | |
1277 | name = gen_fake_label (); | |
1278 | ||
1279 | /* Perform any necessary register eliminations on the parameter's rtl, | |
1280 | so that the debugging output will be accurate. */ | |
0bc644e0 | 1281 | DECL_INCOMING_RTL (parms) |
46b5e7dc | 1282 | = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX); |
2f52aa25 | 1283 | SET_DECL_RTL (parms, |
46b5e7dc | 1284 | eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX)); |
a0313320 | 1285 | |
1286 | if (PARM_PASSED_IN_MEMORY (parms)) | |
1287 | { | |
1288 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
1289 | tree type; | |
1290 | ||
1291 | /* ??? Here we assume that the parm address is indexed | |
1292 | off the frame pointer or arg pointer. | |
1293 | If that is not true, we produce meaningless results, | |
1294 | but do not crash. */ | |
1295 | if (GET_CODE (addr) == PLUS | |
971ba038 | 1296 | && CONST_INT_P (XEXP (addr, 1))) |
a0313320 | 1297 | current_sym_value = INTVAL (XEXP (addr, 1)); |
1298 | else | |
1299 | current_sym_value = 0; | |
1300 | ||
8ad4c111 | 1301 | if (REG_P (DECL_RTL (parms)) |
a0313320 | 1302 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
1303 | type = DECL_ARG_TYPE (parms); | |
1304 | else | |
1305 | { | |
1306 | int original_sym_value = current_sym_value; | |
1307 | ||
1308 | /* This is the case where the parm is passed as an int or | |
1309 | double and it is converted to a char, short or float | |
1310 | and stored back in the parmlist. In this case, describe | |
1311 | the parm with the variable's declared type, and adjust | |
1312 | the address if the least significant bytes (which we are | |
1313 | using) are not the first ones. */ | |
51356f86 | 1314 | if (BYTES_BIG_ENDIAN |
1315 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
a0313320 | 1316 | current_sym_value += |
1317 | (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1318 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
51356f86 | 1319 | |
e16ceb8e | 1320 | if (MEM_P (DECL_RTL (parms)) |
a0313320 | 1321 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS |
1322 | && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1323 | == CONST_INT) | |
1324 | && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1325 | == current_sym_value)) | |
1326 | type = TREE_TYPE (parms); | |
1327 | else | |
1328 | { | |
1329 | current_sym_value = original_sym_value; | |
1330 | type = DECL_ARG_TYPE (parms); | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | PUT_SDB_DEF (name); | |
1335 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr)); | |
1336 | PUT_SDB_SCL (C_ARG); | |
1337 | PUT_SDB_TYPE (plain_type (type)); | |
1338 | PUT_SDB_ENDEF; | |
1339 | } | |
8ad4c111 | 1340 | else if (REG_P (DECL_RTL (parms))) |
a0313320 | 1341 | { |
1342 | rtx best_rtl; | |
1343 | /* Parm passed in registers and lives in registers or nowhere. */ | |
1344 | ||
1345 | /* If parm lives in a register, use that register; | |
1346 | pretend the parm was passed there. It would be more consistent | |
1347 | to describe the register where the parm was passed, | |
1348 | but in practice that register usually holds something else. */ | |
02e7a332 | 1349 | if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
a0313320 | 1350 | best_rtl = DECL_RTL (parms); |
1351 | /* If the parm lives nowhere, | |
1352 | use the register where it was passed. */ | |
1353 | else | |
1354 | best_rtl = DECL_INCOMING_RTL (parms); | |
1355 | ||
1356 | PUT_SDB_DEF (name); | |
1357 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl))); | |
1358 | PUT_SDB_SCL (C_REGPARM); | |
0d4e817b | 1359 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
a0313320 | 1360 | PUT_SDB_ENDEF; |
1361 | } | |
e16ceb8e | 1362 | else if (MEM_P (DECL_RTL (parms)) |
a0313320 | 1363 | && XEXP (DECL_RTL (parms), 0) != const0_rtx) |
1364 | { | |
1365 | /* Parm was passed in registers but lives on the stack. */ | |
1366 | ||
1367 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
1368 | in which case we want the value of that CONST_INT, | |
1369 | or (MEM (REG ...)) or (MEM (MEM ...)), | |
1370 | in which case we use a value of zero. */ | |
8ad4c111 | 1371 | if (REG_P (XEXP (DECL_RTL (parms), 0)) |
e16ceb8e | 1372 | || MEM_P (XEXP (DECL_RTL (parms), 0))) |
a0313320 | 1373 | current_sym_value = 0; |
1374 | else | |
1375 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
1376 | ||
1377 | /* Again, this assumes the offset is based on the arg pointer. */ | |
1378 | PUT_SDB_DEF (name); | |
1379 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, | |
1380 | XEXP (DECL_RTL (parms), 0))); | |
1381 | PUT_SDB_SCL (C_ARG); | |
0d4e817b | 1382 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
a0313320 | 1383 | PUT_SDB_ENDEF; |
1384 | } | |
1385 | } | |
1386 | } | |
1387 | ||
1388 | /* Output definitions for the places where parms live during the function, | |
1389 | when different from where they were passed, when the parms were passed | |
1390 | in memory. | |
1391 | ||
1392 | It is not useful to do this for parms passed in registers | |
1393 | that live during the function in different registers, because it is | |
1394 | impossible to look in the passed register for the passed value, | |
1395 | so we use the within-the-function register to begin with. | |
1396 | ||
1397 | PARMS is a chain of PARM_DECL nodes. */ | |
1398 | ||
1399 | static void | |
3b8f8a40 | 1400 | sdbout_reg_parms (tree parms) |
a0313320 | 1401 | { |
1402 | for (; parms; parms = TREE_CHAIN (parms)) | |
1403 | if (DECL_NAME (parms)) | |
1404 | { | |
fb1f4ef4 | 1405 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
a0313320 | 1406 | |
1407 | /* Report parms that live in registers during the function | |
1408 | but were passed in memory. */ | |
8ad4c111 | 1409 | if (REG_P (DECL_RTL (parms)) |
a0313320 | 1410 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER |
1411 | && PARM_PASSED_IN_MEMORY (parms)) | |
1412 | { | |
1413 | if (name == 0 || *name == 0) | |
1414 | name = gen_fake_label (); | |
1415 | PUT_SDB_DEF (name); | |
1416 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)))); | |
1417 | PUT_SDB_SCL (C_REG); | |
0d4e817b | 1418 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
a0313320 | 1419 | PUT_SDB_ENDEF; |
1420 | } | |
1421 | /* Report parms that live in memory but not where they were passed. */ | |
e16ceb8e | 1422 | else if (MEM_P (DECL_RTL (parms)) |
a0313320 | 1423 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS |
971ba038 | 1424 | && CONST_INT_P (XEXP (XEXP (DECL_RTL (parms), 0), 1)) |
a0313320 | 1425 | && PARM_PASSED_IN_MEMORY (parms) |
1426 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
1427 | { | |
1428 | #if 0 /* ??? It is not clear yet what should replace this. */ | |
1429 | int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
1430 | /* A parm declared char is really passed as an int, | |
1431 | so it occupies the least significant bytes. | |
1432 | On a big-endian machine those are not the low-numbered ones. */ | |
51356f86 | 1433 | if (BYTES_BIG_ENDIAN |
1434 | && offset != -1 | |
1435 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
a0313320 | 1436 | offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) |
1437 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
a0313320 | 1438 | if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} |
1439 | #endif | |
1440 | { | |
1441 | if (name == 0 || *name == 0) | |
1442 | name = gen_fake_label (); | |
1443 | PUT_SDB_DEF (name); | |
1444 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
1445 | (XEXP (DECL_RTL (parms), 0))); | |
1446 | PUT_SDB_SCL (C_AUTO); | |
1447 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
1448 | PUT_SDB_ENDEF; | |
1449 | } | |
1450 | } | |
1451 | } | |
1452 | } | |
3b8f8a40 | 1453 | |
c37d72e9 | 1454 | /* Output debug information for a global DECL. Called from toplev.c |
1455 | after compilation proper has finished. */ | |
1456 | ||
1457 | static void | |
3b8f8a40 | 1458 | sdbout_global_decl (tree decl) |
c37d72e9 | 1459 | { |
1460 | if (TREE_CODE (decl) == VAR_DECL | |
9dcd5f30 | 1461 | && !DECL_EXTERNAL (decl) |
1462 | && DECL_RTL_SET_P (decl)) | |
c37d72e9 | 1463 | { |
1464 | /* The COFF linker can move initialized global vars to the end. | |
9dcd5f30 | 1465 | And that can screw up the symbol ordering. Defer those for |
1466 | sdbout_finish (). */ | |
1467 | if (!DECL_INITIAL (decl) || !TREE_PUBLIC (decl)) | |
c37d72e9 | 1468 | sdbout_symbol (decl, 0); |
73ae3ef7 | 1469 | else |
67076d6d | 1470 | VEC_safe_push (tree, gc, deferred_global_decls, decl); |
c37d72e9 | 1471 | |
1472 | /* Output COFF information for non-global file-scope initialized | |
1473 | variables. */ | |
e16ceb8e | 1474 | if (DECL_INITIAL (decl) && MEM_P (DECL_RTL (decl))) |
c37d72e9 | 1475 | sdbout_toplevel_data (decl); |
1476 | } | |
1477 | } | |
9dcd5f30 | 1478 | |
1479 | /* Output initialized global vars at the end, in the order of | |
1480 | definition. See comment in sdbout_global_decl. */ | |
1481 | ||
1482 | static void | |
3b8f8a40 | 1483 | sdbout_finish (const char *main_filename ATTRIBUTE_UNUSED) |
9dcd5f30 | 1484 | { |
ec4f62a9 | 1485 | size_t i; |
67076d6d | 1486 | tree decl; |
9dcd5f30 | 1487 | |
48148244 | 1488 | FOR_EACH_VEC_ELT (tree, deferred_global_decls, i, decl) |
67076d6d | 1489 | sdbout_symbol (decl, 0); |
9dcd5f30 | 1490 | } |
3b8f8a40 | 1491 | |
a0313320 | 1492 | /* Describe the beginning of an internal block within a function. |
1493 | Also output descriptions of variables defined in this block. | |
1494 | ||
1495 | N is the number of the block, by order of beginning, counting from 1, | |
1496 | and not counting the outermost (function top-level) block. | |
1497 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
1498 | if the count starts at 0 for the outermost one. */ | |
1499 | ||
1dff614c | 1500 | static void |
3b8f8a40 | 1501 | sdbout_begin_block (unsigned int line, unsigned int n) |
a0313320 | 1502 | { |
1503 | tree decl = current_function_decl; | |
1504 | MAKE_LINE_SAFE (line); | |
e7a5a9f6 | 1505 | |
1506 | /* The SCO compiler does not emit a separate block for the function level | |
1507 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1508 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1509 | #ifndef MIPS_DEBUGGING_INFO | |
1510 | if (n != 1) | |
1511 | #endif | |
1512 | PUT_SDB_BLOCK_START (line - sdb_begin_function_line); | |
1513 | ||
a0313320 | 1514 | if (n == 1) |
1515 | { | |
1516 | /* Include the outermost BLOCK's variables in block 1. */ | |
5846cb0f | 1517 | do_block = BLOCK_NUMBER (DECL_INITIAL (decl)); |
a0313320 | 1518 | sdbout_block (DECL_INITIAL (decl)); |
1519 | } | |
1520 | /* If -g1, suppress all the internal symbols of functions | |
1521 | except for arguments. */ | |
1522 | if (debug_info_level != DINFO_LEVEL_TERSE) | |
1523 | { | |
a0313320 | 1524 | do_block = n; |
1525 | sdbout_block (DECL_INITIAL (decl)); | |
1526 | } | |
1527 | ||
1528 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1529 | sdbout_dequeue_anonymous_types (); | |
1530 | #endif | |
1531 | } | |
1532 | ||
1533 | /* Describe the end line-number of an internal block within a function. */ | |
1534 | ||
b9b7f8b4 | 1535 | static void |
3b8f8a40 | 1536 | sdbout_end_block (unsigned int line, unsigned int n ATTRIBUTE_UNUSED) |
a0313320 | 1537 | { |
1538 | MAKE_LINE_SAFE (line); | |
e7a5a9f6 | 1539 | |
1540 | /* The SCO compiler does not emit a separate block for the function level | |
1541 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1542 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1543 | #ifndef MIPS_DEBUGGING_INFO | |
1544 | if (n != 1) | |
1545 | #endif | |
a0313320 | 1546 | PUT_SDB_BLOCK_END (line - sdb_begin_function_line); |
1547 | } | |
1548 | ||
b1bd5ac9 | 1549 | /* Output a line number symbol entry for source file FILENAME and line |
1550 | number LINE. */ | |
1551 | ||
b9b7f8b4 | 1552 | static void |
d01c707b | 1553 | sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED, |
1488fe24 | 1554 | int discriminator ATTRIBUTE_UNUSED, |
1555 | bool is_stmt ATTRIBUTE_UNUSED) | |
b9b7f8b4 | 1556 | { |
b9b7f8b4 | 1557 | /* COFF relative line numbers must be positive. */ |
27d0c333 | 1558 | if ((int) line > sdb_begin_function_line) |
b9b7f8b4 | 1559 | { |
e3b8b697 | 1560 | #ifdef SDB_OUTPUT_SOURCE_LINE |
1561 | SDB_OUTPUT_SOURCE_LINE (asm_out_file, line); | |
b9b7f8b4 | 1562 | #else |
1563 | fprintf (asm_out_file, "\t.ln\t%d\n", | |
1564 | ((sdb_begin_function_line > -1) | |
1565 | ? line - sdb_begin_function_line : 1)); | |
1566 | #endif | |
1567 | } | |
1568 | } | |
1569 | ||
a0313320 | 1570 | /* Output sdb info for the current function name. |
1571 | Called from assemble_start_function. */ | |
1572 | ||
f76df888 | 1573 | static void |
3b8f8a40 | 1574 | sdbout_begin_function (tree decl ATTRIBUTE_UNUSED) |
a0313320 | 1575 | { |
1576 | sdbout_symbol (current_function_decl, 0); | |
1577 | } | |
1578 | ||
f76df888 | 1579 | /* Called at beginning of function body (before or after prologue, |
1580 | depending on MIPS_DEBUGGING_INFO). Record the function's starting | |
1581 | line number, so we can output relative line numbers for the other | |
1582 | lines. Describe beginning of outermost block. Also describe the | |
1583 | parameter list. */ | |
a0313320 | 1584 | |
f76df888 | 1585 | #ifndef MIPS_DEBUGGING_INFO |
1586 | static void | |
3b8f8a40 | 1587 | sdbout_begin_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) |
f76df888 | 1588 | { |
e74e8242 | 1589 | sdbout_end_prologue (line, file); |
f76df888 | 1590 | } |
1591 | #endif | |
1592 | ||
1593 | static void | |
808ea0c9 | 1594 | sdbout_end_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) |
a0313320 | 1595 | { |
1596 | sdb_begin_function_line = line - 1; | |
1597 | PUT_SDB_FUNCTION_START (line); | |
1598 | sdbout_parms (DECL_ARGUMENTS (current_function_decl)); | |
1599 | sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl)); | |
1600 | } | |
1601 | ||
1602 | /* Called at end of function (before epilogue). | |
1603 | Describe end of outermost block. */ | |
1604 | ||
b9b7f8b4 | 1605 | static void |
3b8f8a40 | 1606 | sdbout_end_function (unsigned int line) |
a0313320 | 1607 | { |
1608 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1609 | sdbout_dequeue_anonymous_types (); | |
1610 | #endif | |
1611 | ||
1612 | MAKE_LINE_SAFE (line); | |
1613 | PUT_SDB_FUNCTION_END (line - sdb_begin_function_line); | |
1614 | ||
1615 | /* Indicate we are between functions, for line-number output. */ | |
1616 | sdb_begin_function_line = -1; | |
1617 | } | |
1618 | ||
1619 | /* Output sdb info for the absolute end of a function. | |
1620 | Called after the epilogue is output. */ | |
1621 | ||
b9b7f8b4 | 1622 | static void |
3b8f8a40 | 1623 | sdbout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, |
1624 | const char *file ATTRIBUTE_UNUSED) | |
a0313320 | 1625 | { |
96b529f2 | 1626 | const char *const name ATTRIBUTE_UNUSED |
b9b7f8b4 | 1627 | = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); |
1628 | ||
1629 | #ifdef PUT_SDB_EPILOGUE_END | |
1630 | PUT_SDB_EPILOGUE_END (name); | |
1631 | #else | |
1632 | fprintf (asm_out_file, "\t.def\t"); | |
1633 | assemble_name (asm_out_file, name); | |
1634 | fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", | |
1635 | SDB_DELIM, SDB_DELIM, SDB_DELIM); | |
1636 | #endif | |
a0313320 | 1637 | } |
1638 | ||
1639 | /* Output sdb info for the given label. Called only if LABEL_NAME (insn) | |
1640 | is present. */ | |
1641 | ||
b29760a8 | 1642 | static void |
3b8f8a40 | 1643 | sdbout_label (rtx insn) |
a0313320 | 1644 | { |
1645 | PUT_SDB_DEF (LABEL_NAME (insn)); | |
1646 | PUT_SDB_VAL (insn); | |
1647 | PUT_SDB_SCL (C_LABEL); | |
1648 | PUT_SDB_TYPE (T_NULL); | |
1649 | PUT_SDB_ENDEF; | |
1650 | } | |
1651 | ||
33d72cae | 1652 | /* Change to reading from a new source file. */ |
1653 | ||
c140b944 | 1654 | static void |
3b8f8a40 | 1655 | sdbout_start_source_file (unsigned int line ATTRIBUTE_UNUSED, |
1656 | const char *filename ATTRIBUTE_UNUSED) | |
33d72cae | 1657 | { |
1658 | #ifdef MIPS_DEBUGGING_INFO | |
225ab426 | 1659 | struct sdb_file *n = XNEW (struct sdb_file); |
33d72cae | 1660 | |
1661 | n->next = current_file; | |
1662 | n->name = filename; | |
1663 | current_file = n; | |
e3b8b697 | 1664 | output_file_directive (asm_out_file, filename); |
33d72cae | 1665 | #endif |
1666 | } | |
1667 | ||
1668 | /* Revert to reading a previous source file. */ | |
1669 | ||
c140b944 | 1670 | static void |
3b8f8a40 | 1671 | sdbout_end_source_file (unsigned int line ATTRIBUTE_UNUSED) |
33d72cae | 1672 | { |
1673 | #ifdef MIPS_DEBUGGING_INFO | |
1674 | struct sdb_file *next; | |
1675 | ||
1676 | next = current_file->next; | |
1677 | free (current_file); | |
1678 | current_file = next; | |
e3b8b697 | 1679 | output_file_directive (asm_out_file, current_file->name); |
33d72cae | 1680 | #endif |
1681 | } | |
1682 | ||
a9ffa672 | 1683 | /* Set up for SDB output at the start of compilation. */ |
1684 | ||
b896d81b | 1685 | static void |
3b8f8a40 | 1686 | sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED) |
a9ffa672 | 1687 | { |
ec4f62a9 | 1688 | tree t; |
1689 | ||
a9ffa672 | 1690 | #ifdef MIPS_DEBUGGING_INFO |
225ab426 | 1691 | current_file = XNEW (struct sdb_file); |
a9ffa672 | 1692 | current_file->next = NULL; |
1693 | current_file->name = input_file_name; | |
1694 | #endif | |
73ae3ef7 | 1695 | |
67076d6d | 1696 | deferred_global_decls = VEC_alloc (tree, gc, 12); |
ec4f62a9 | 1697 | |
1698 | /* Emit debug information which was queued by sdbout_symbol before | |
1699 | we got here. */ | |
1700 | sdbout_initialized = true; | |
1701 | ||
1702 | for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t)) | |
1703 | sdbout_symbol (TREE_VALUE (t), 0); | |
1704 | preinit_symbols = 0; | |
a9ffa672 | 1705 | } |
1706 | ||
a0313320 | 1707 | #endif /* SDB_DEBUGGING_INFO */ |
1f3233d1 | 1708 | |
1709 | #include "gt-sdbout.h" |