Mercurial > hg > CbC > CbC_gcc
annotate gcc/sdbout.c @ 64:d9bee9007a48
Added tag gcc-4.6-20100522 for changeset b7f97abdc517
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 24 May 2010 12:48:09 +0900 |
| parents | b7f97abdc517 |
| children | f6334be47118 |
| rev | line source |
|---|---|
| 0 | 1 /* Output sdb-format symbol table information from GNU compiler. |
| 2 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, | |
|
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3 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 |
| 0 | 4 Free Software Foundation, Inc. |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 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 | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 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. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 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 | |
| 39 end of file with all top level statics occurring first before externs. | |
| 40 | |
| 41 6. All undefined references are at the end of the file. | |
| 42 */ | |
| 43 | |
| 44 #include "config.h" | |
| 45 #include "system.h" | |
| 46 #include "coretypes.h" | |
| 47 #include "tm.h" | |
| 48 #include "debug.h" | |
| 49 #include "tree.h" | |
| 50 #include "ggc.h" | |
|
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51 #include "vec.h" |
| 0 | 52 |
| 53 static GTY(()) tree anonymous_types; | |
| 54 | |
| 55 /* Counter to generate unique "names" for nameless struct members. */ | |
| 56 | |
| 57 static GTY(()) int unnamed_struct_number; | |
| 58 | |
| 59 /* Declarations whose debug info was deferred till end of compilation. */ | |
| 60 | |
|
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61 static GTY(()) VEC(tree,gc) *deferred_global_decls; |
| 0 | 62 |
| 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 | |
| 70 #ifdef SDB_DEBUGGING_INFO | |
| 71 | |
| 72 #include "rtl.h" | |
| 73 #include "regs.h" | |
| 74 #include "flags.h" | |
| 75 #include "insn-config.h" | |
| 76 #include "reload.h" | |
| 77 #include "output.h" | |
| 78 #include "toplev.h" | |
| 79 #include "tm_p.h" | |
| 80 #include "gsyms.h" | |
| 81 #include "langhooks.h" | |
| 82 #include "target.h" | |
| 83 | |
| 84 /* 1 if PARM is passed to this function in memory. */ | |
| 85 | |
| 86 #define PARM_PASSED_IN_MEMORY(PARM) \ | |
| 87 (MEM_P (DECL_INCOMING_RTL (PARM))) | |
| 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 | |
| 105 int sdb_begin_function_line = -1; | |
| 106 | |
| 107 | |
| 108 extern FILE *asm_out_file; | |
| 109 | |
| 110 extern tree current_function_decl; | |
| 111 | |
| 112 #include "sdbout.h" | |
| 113 | |
| 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); | |
|
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120 static void sdbout_source_line (unsigned int, const char *, int, bool); |
| 0 | 121 static void sdbout_end_epilogue (unsigned int, const char *); |
| 122 static void sdbout_global_decl (tree); | |
| 123 #ifndef MIPS_DEBUGGING_INFO | |
| 124 static void sdbout_begin_prologue (unsigned int, const char *); | |
| 125 #endif | |
| 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); | |
| 138 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 139 static void sdbout_queue_anonymous_type (tree); | |
| 140 static void sdbout_dequeue_anonymous_types (void); | |
| 141 #endif | |
| 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); | |
| 148 | |
| 149 /* Random macros describing parts of SDB data. */ | |
| 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 | |
| 166 #define PUT_SDB_INT_VAL(a) \ | |
| 167 do { \ | |
| 168 fprintf (asm_out_file, "\t.val\t" HOST_WIDE_INT_PRINT_DEC "%s", \ | |
| 169 (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
| 170 } while (0) | |
| 171 | |
| 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"); \ | |
| 184 assemble_name (asm_out_file, a); \ | |
| 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 | |
| 201 #define PUT_SDB_SIZE(a) \ | |
| 202 do { \ | |
| 203 fprintf (asm_out_file, "\t.size\t" HOST_WIDE_INT_PRINT_DEC "%s", \ | |
| 204 (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
| 205 } while(0) | |
| 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"); \ | |
| 223 assemble_name (asm_out_file, a); \ | |
| 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 | |
| 255 /* Return the sdb tag identifier string for TYPE | |
| 256 if TYPE has already been defined; otherwise return a null pointer. */ | |
| 257 | |
| 258 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type) | |
| 259 | |
| 260 /* Set the sdb tag identifier string for TYPE to NAME. */ | |
| 261 | |
| 262 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \ | |
| 263 TYPE_SYMTAB_POINTER (TYPE) = (const char *)(NAME) | |
| 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) \ | |
| 275 if ((int) line <= sdb_begin_function_line) \ | |
| 276 line = sdb_begin_function_line + 1 | |
| 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 | |
| 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; | |
| 296 const char *name; | |
| 297 }; | |
| 298 | |
| 299 /* This is the top of the stack. */ | |
| 300 | |
| 301 static struct sdb_file *current_file; | |
| 302 | |
| 303 #endif /* MIPS_DEBUGGING_INFO */ | |
| 304 | |
| 305 /* The debug hooks structure. */ | |
| 306 const struct gcc_debug_hooks sdb_debug_hooks = | |
| 307 { | |
| 308 sdbout_init, /* init */ | |
| 309 sdbout_finish, /* finish */ | |
| 36 | 310 debug_nothing_void, /* assembly_start */ |
| 0 | 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 */ | |
| 317 debug_true_const_tree, /* ignore_block */ | |
| 318 sdbout_source_line, /* source_line */ | |
| 319 #ifdef MIPS_DEBUGGING_INFO | |
| 320 /* Defer on MIPS systems so that parameter descriptions follow | |
| 321 function entry. */ | |
| 322 debug_nothing_int_charstar, /* begin_prologue */ | |
| 323 sdbout_end_prologue, /* end_prologue */ | |
| 324 #else | |
| 325 sdbout_begin_prologue, /* begin_prologue */ | |
| 326 debug_nothing_int_charstar, /* end_prologue */ | |
| 327 #endif | |
| 328 sdbout_end_epilogue, /* end_epilogue */ | |
| 329 sdbout_begin_function, /* begin_function */ | |
| 330 sdbout_end_function, /* end_function */ | |
| 331 debug_nothing_tree, /* function_decl */ | |
| 332 sdbout_global_decl, /* global_decl */ | |
| 333 sdbout_symbol, /* type_decl */ | |
| 334 debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ | |
| 335 debug_nothing_tree, /* deferred_inline_function */ | |
| 336 debug_nothing_tree, /* outlining_inline_function */ | |
| 337 sdbout_label, /* label */ | |
| 338 debug_nothing_int, /* handle_pch */ | |
| 339 debug_nothing_rtx, /* var_location */ | |
| 340 debug_nothing_void, /* switch_text_section */ | |
|
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77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
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341 debug_nothing_tree, /* direct_call */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
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342 debug_nothing_tree_int, /* virtual_call_token */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
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343 debug_nothing_rtx_rtx, /* copy_call_info */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
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344 debug_nothing_uid, /* virtual_call */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
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345 debug_nothing_tree_tree, /* set_name */ |
| 0 | 346 0 /* start_end_main_source_file */ |
| 347 }; | |
| 348 | |
| 349 /* Return a unique string to name an anonymous type. */ | |
| 350 | |
| 351 static char * | |
| 352 gen_fake_label (void) | |
| 353 { | |
| 354 char label[10]; | |
| 355 char *labelstr; | |
| 356 sprintf (label, ".%dfake", unnamed_struct_number); | |
| 357 unnamed_struct_number++; | |
| 358 labelstr = xstrdup (label); | |
| 359 return labelstr; | |
| 360 } | |
| 361 | |
| 362 /* Return the number which describes TYPE for SDB. | |
| 363 For pointers, etc., this function is recursive. | |
| 364 Each record, union or enumeral type must already have had a | |
| 365 tag number output. */ | |
| 366 | |
| 367 /* The number is given by d6d5d4d3d2d1bbbb | |
| 368 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array. | |
| 369 Thus, char *foo () has bbbb=T_CHAR | |
| 370 d1=D_FCN | |
| 371 d2=D_PTR | |
| 372 N_BTMASK= 017 1111 basic type field. | |
| 373 N_TSHIFT= 2 derived type shift | |
| 374 N_BTSHFT= 4 Basic type shift */ | |
| 375 | |
| 376 /* Produce the number that describes a pointer, function or array type. | |
| 377 PREV is the number describing the target, value or element type. | |
| 378 DT_type describes how to transform that type. */ | |
| 379 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \ | |
| 380 ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \ | |
| 381 | ((int) DT_type << (int) N_BTSHFT) \ | |
| 382 | ((PREV) & (int) N_BTMASK)) | |
| 383 | |
| 384 /* Number of elements used in sdb_dims. */ | |
| 385 static int sdb_n_dims = 0; | |
| 386 | |
| 387 /* Table of array dimensions of current type. */ | |
| 388 static int sdb_dims[SDB_MAX_DIM]; | |
| 389 | |
| 390 /* Size of outermost array currently being processed. */ | |
| 391 static int sdb_type_size = -1; | |
| 392 | |
| 393 static int | |
| 394 plain_type (tree type) | |
| 395 { | |
| 396 int val = plain_type_1 (type, 0); | |
| 397 | |
| 398 /* If we have already saved up some array dimensions, print them now. */ | |
| 399 if (sdb_n_dims > 0) | |
| 400 { | |
| 401 int i; | |
| 402 PUT_SDB_START_DIM; | |
| 403 for (i = sdb_n_dims - 1; i > 0; i--) | |
| 404 PUT_SDB_NEXT_DIM (sdb_dims[i]); | |
| 405 PUT_SDB_LAST_DIM (sdb_dims[0]); | |
| 406 sdb_n_dims = 0; | |
| 407 | |
| 408 sdb_type_size = int_size_in_bytes (type); | |
| 409 /* Don't kill sdb if type is not laid out or has variable size. */ | |
| 410 if (sdb_type_size < 0) | |
| 411 sdb_type_size = 0; | |
| 412 } | |
| 413 /* If we have computed the size of an array containing this type, | |
| 414 print it now. */ | |
| 415 if (sdb_type_size >= 0) | |
| 416 { | |
| 417 PUT_SDB_SIZE (sdb_type_size); | |
| 418 sdb_type_size = -1; | |
| 419 } | |
| 420 return val; | |
| 421 } | |
| 422 | |
| 423 static int | |
| 424 template_name_p (tree name) | |
| 425 { | |
| 426 const char *ptr = IDENTIFIER_POINTER (name); | |
| 427 while (*ptr && *ptr != '<') | |
| 428 ptr++; | |
| 429 | |
| 430 return *ptr != '\0'; | |
| 431 } | |
| 432 | |
| 433 static void | |
| 434 sdbout_record_type_name (tree type) | |
| 435 { | |
| 436 const char *name = 0; | |
| 437 int no_name; | |
| 438 | |
| 439 if (KNOWN_TYPE_TAG (type)) | |
| 440 return; | |
| 441 | |
| 442 if (TYPE_NAME (type) != 0) | |
| 443 { | |
| 444 tree t = 0; | |
| 445 | |
| 446 /* Find the IDENTIFIER_NODE for the type name. */ | |
| 447 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
| 448 t = TYPE_NAME (type); | |
| 449 else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
| 450 { | |
| 451 t = DECL_NAME (TYPE_NAME (type)); | |
| 452 /* The DECL_NAME for templates includes "<>", which breaks | |
| 453 most assemblers. Use its assembler name instead, which | |
| 454 has been mangled into being safe. */ | |
| 455 if (t && template_name_p (t)) | |
| 456 t = DECL_ASSEMBLER_NAME (TYPE_NAME (type)); | |
| 457 } | |
| 458 | |
| 459 /* Now get the name as a string, or invent one. */ | |
| 460 if (t != NULL_TREE) | |
| 461 name = IDENTIFIER_POINTER (t); | |
| 462 } | |
| 463 | |
| 464 no_name = (name == 0 || *name == 0); | |
| 465 if (no_name) | |
| 466 name = gen_fake_label (); | |
| 467 | |
| 468 SET_KNOWN_TYPE_TAG (type, name); | |
| 469 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 470 if (no_name) | |
| 471 sdbout_queue_anonymous_type (type); | |
| 472 #endif | |
| 473 } | |
| 474 | |
| 475 /* Return the .type value for type TYPE. | |
| 476 | |
| 477 LEVEL indicates how many levels deep we have recursed into the type. | |
| 478 The SDB debug format can only represent 6 derived levels of types. | |
| 479 After that, we must output inaccurate debug info. We deliberately | |
| 480 stop before the 7th level, so that ADA recursive types will not give an | |
| 481 infinite loop. */ | |
| 482 | |
| 483 static int | |
| 484 plain_type_1 (tree type, int level) | |
| 485 { | |
| 486 if (type == 0) | |
| 487 type = void_type_node; | |
| 488 else if (type == error_mark_node) | |
| 489 type = integer_type_node; | |
| 490 else | |
| 491 type = TYPE_MAIN_VARIANT (type); | |
| 492 | |
| 493 switch (TREE_CODE (type)) | |
| 494 { | |
| 495 case VOID_TYPE: | |
| 496 return T_VOID; | |
| 497 case BOOLEAN_TYPE: | |
| 498 case INTEGER_TYPE: | |
| 499 { | |
| 500 int size = int_size_in_bytes (type) * BITS_PER_UNIT; | |
| 501 | |
| 502 /* Carefully distinguish all the standard types of C, | |
| 503 without messing up if the language is not C. | |
| 504 Note that we check only for the names that contain spaces; | |
| 505 other names might occur by coincidence in other languages. */ | |
| 506 if (TYPE_NAME (type) != 0 | |
| 507 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
| 508 && DECL_NAME (TYPE_NAME (type)) != 0 | |
| 509 && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE) | |
| 510 { | |
| 511 const char *const name | |
| 512 = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); | |
| 513 | |
| 514 if (!strcmp (name, "char")) | |
| 515 return T_CHAR; | |
| 516 if (!strcmp (name, "unsigned char")) | |
| 517 return T_UCHAR; | |
| 518 if (!strcmp (name, "signed char")) | |
| 519 return T_CHAR; | |
| 520 if (!strcmp (name, "int")) | |
| 521 return T_INT; | |
| 522 if (!strcmp (name, "unsigned int")) | |
| 523 return T_UINT; | |
| 524 if (!strcmp (name, "short int")) | |
| 525 return T_SHORT; | |
| 526 if (!strcmp (name, "short unsigned int")) | |
| 527 return T_USHORT; | |
| 528 if (!strcmp (name, "long int")) | |
| 529 return T_LONG; | |
| 530 if (!strcmp (name, "long unsigned int")) | |
| 531 return T_ULONG; | |
| 532 } | |
| 533 | |
| 534 if (size == INT_TYPE_SIZE) | |
| 535 return (TYPE_UNSIGNED (type) ? T_UINT : T_INT); | |
| 536 if (size == CHAR_TYPE_SIZE) | |
| 537 return (TYPE_UNSIGNED (type) ? T_UCHAR : T_CHAR); | |
| 538 if (size == SHORT_TYPE_SIZE) | |
| 539 return (TYPE_UNSIGNED (type) ? T_USHORT : T_SHORT); | |
| 540 if (size == LONG_TYPE_SIZE) | |
| 541 return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
| 542 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */ | |
| 543 return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
| 544 return 0; | |
| 545 } | |
| 546 | |
| 547 case REAL_TYPE: | |
| 548 { | |
| 549 int precision = TYPE_PRECISION (type); | |
| 550 if (precision == FLOAT_TYPE_SIZE) | |
| 551 return T_FLOAT; | |
| 552 if (precision == DOUBLE_TYPE_SIZE) | |
| 553 return T_DOUBLE; | |
| 554 #ifdef EXTENDED_SDB_BASIC_TYPES | |
| 555 if (precision == LONG_DOUBLE_TYPE_SIZE) | |
| 556 return T_LNGDBL; | |
| 557 #else | |
| 558 if (precision == LONG_DOUBLE_TYPE_SIZE) | |
| 559 return T_DOUBLE; /* better than nothing */ | |
| 560 #endif | |
| 561 return 0; | |
| 562 } | |
| 563 | |
| 564 case ARRAY_TYPE: | |
| 565 { | |
| 566 int m; | |
| 567 if (level >= 6) | |
| 568 return T_VOID; | |
| 569 else | |
| 570 m = plain_type_1 (TREE_TYPE (type), level+1); | |
| 571 if (sdb_n_dims < SDB_MAX_DIM) | |
| 572 sdb_dims[sdb_n_dims++] | |
| 573 = (TYPE_DOMAIN (type) | |
| 574 && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0 | |
| 575 && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0 | |
| 576 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
| 577 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) | |
| 578 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
| 579 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1) | |
| 580 : 0); | |
| 581 | |
| 582 return PUSH_DERIVED_LEVEL (DT_ARY, m); | |
| 583 } | |
| 584 | |
| 585 case RECORD_TYPE: | |
| 586 case UNION_TYPE: | |
| 587 case QUAL_UNION_TYPE: | |
| 588 case ENUMERAL_TYPE: | |
| 589 { | |
| 590 const char *tag; | |
| 591 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 592 sdbout_record_type_name (type); | |
| 593 #endif | |
| 594 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES | |
| 595 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0) | |
| 596 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 597 || TYPE_MODE (type) != VOIDmode | |
| 598 #endif | |
| 599 ) | |
| 600 #endif | |
| 601 { | |
| 602 /* Output the referenced structure tag name | |
| 603 only if the .def has already been finished. | |
| 604 At least on 386, the Unix assembler | |
| 605 cannot handle forward references to tags. */ | |
| 606 /* But the 88100, it requires them, sigh... */ | |
| 607 /* And the MIPS requires unknown refs as well... */ | |
| 608 tag = KNOWN_TYPE_TAG (type); | |
| 609 PUT_SDB_TAG (tag); | |
| 610 /* These 3 lines used to follow the close brace. | |
| 611 However, a size of 0 without a tag implies a tag of 0, | |
| 612 so if we don't know a tag, we can't mention the size. */ | |
| 613 sdb_type_size = int_size_in_bytes (type); | |
| 614 if (sdb_type_size < 0) | |
| 615 sdb_type_size = 0; | |
| 616 } | |
| 617 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT | |
| 618 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION | |
| 619 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION | |
| 620 : T_ENUM); | |
| 621 } | |
| 622 case POINTER_TYPE: | |
| 623 case REFERENCE_TYPE: | |
| 624 { | |
| 625 int m; | |
| 626 if (level >= 6) | |
| 627 return T_VOID; | |
| 628 else | |
| 629 m = plain_type_1 (TREE_TYPE (type), level+1); | |
| 630 return PUSH_DERIVED_LEVEL (DT_PTR, m); | |
| 631 } | |
| 632 case FUNCTION_TYPE: | |
| 633 case METHOD_TYPE: | |
| 634 { | |
| 635 int m; | |
| 636 if (level >= 6) | |
| 637 return T_VOID; | |
| 638 else | |
| 639 m = plain_type_1 (TREE_TYPE (type), level+1); | |
| 640 return PUSH_DERIVED_LEVEL (DT_FCN, m); | |
| 641 } | |
| 642 default: | |
| 643 return 0; | |
| 644 } | |
| 645 } | |
| 646 | |
| 647 /* Output the symbols defined in block number DO_BLOCK. | |
| 648 | |
| 649 This function works by walking the tree structure of blocks, | |
| 650 counting blocks until it finds the desired block. */ | |
| 651 | |
| 652 static int do_block = 0; | |
| 653 | |
| 654 static void | |
| 655 sdbout_block (tree block) | |
| 656 { | |
| 657 while (block) | |
| 658 { | |
| 659 /* Ignore blocks never expanded or otherwise marked as real. */ | |
| 660 if (TREE_USED (block)) | |
| 661 { | |
| 662 /* When we reach the specified block, output its symbols. */ | |
| 663 if (BLOCK_NUMBER (block) == do_block) | |
| 664 sdbout_syms (BLOCK_VARS (block)); | |
| 665 | |
| 666 /* If we are past the specified block, stop the scan. */ | |
| 667 if (BLOCK_NUMBER (block) > do_block) | |
| 668 return; | |
| 669 | |
| 670 /* Scan the blocks within this block. */ | |
| 671 sdbout_block (BLOCK_SUBBLOCKS (block)); | |
| 672 } | |
| 673 | |
| 674 block = BLOCK_CHAIN (block); | |
| 675 } | |
| 676 } | |
| 677 | |
| 678 /* Call sdbout_symbol on each decl in the chain SYMS. */ | |
| 679 | |
| 680 static void | |
| 681 sdbout_syms (tree syms) | |
| 682 { | |
| 683 while (syms) | |
| 684 { | |
| 685 if (TREE_CODE (syms) != LABEL_DECL) | |
| 686 sdbout_symbol (syms, 1); | |
| 687 syms = TREE_CHAIN (syms); | |
| 688 } | |
| 689 } | |
| 690 | |
| 691 /* Output SDB information for a symbol described by DECL. | |
| 692 LOCAL is nonzero if the symbol is not file-scope. */ | |
| 693 | |
| 694 void | |
| 695 sdbout_symbol (tree decl, int local) | |
| 696 { | |
| 697 tree type = TREE_TYPE (decl); | |
| 698 tree context = NULL_TREE; | |
| 699 rtx value; | |
| 700 int regno = -1; | |
| 701 const char *name; | |
| 702 | |
| 703 /* If we are called before sdbout_init is run, just save the symbol | |
| 704 for later. */ | |
| 705 if (!sdbout_initialized) | |
| 706 { | |
| 707 preinit_symbols = tree_cons (0, decl, preinit_symbols); | |
| 708 return; | |
| 709 } | |
| 710 | |
| 711 sdbout_one_type (type); | |
| 712 | |
| 713 switch (TREE_CODE (decl)) | |
| 714 { | |
| 715 case CONST_DECL: | |
| 716 /* Enum values are defined by defining the enum type. */ | |
| 717 return; | |
| 718 | |
| 719 case FUNCTION_DECL: | |
| 720 /* Don't mention a nested function under its parent. */ | |
| 721 context = decl_function_context (decl); | |
| 722 if (context == current_function_decl) | |
| 723 return; | |
| 724 /* Check DECL_INITIAL to distinguish declarations from definitions. | |
| 725 Don't output debug info here for declarations; they will have | |
| 726 a DECL_INITIAL value of 0. */ | |
| 727 if (! DECL_INITIAL (decl)) | |
| 728 return; | |
| 729 if (!MEM_P (DECL_RTL (decl)) | |
| 730 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) | |
| 731 return; | |
| 732 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
| 733 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
| 734 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT); | |
| 735 break; | |
| 736 | |
| 737 case TYPE_DECL: | |
| 738 /* Done with tagged types. */ | |
| 739 if (DECL_NAME (decl) == 0) | |
| 740 return; | |
| 741 if (DECL_IGNORED_P (decl)) | |
| 742 return; | |
| 743 /* Don't output intrinsic types. GAS chokes on SDB .def | |
| 744 statements that contain identifiers with embedded spaces | |
| 745 (eg "unsigned long"). */ | |
| 746 if (DECL_IS_BUILTIN (decl)) | |
| 747 return; | |
| 748 | |
| 749 /* Output typedef name. */ | |
| 750 if (template_name_p (DECL_NAME (decl))) | |
| 751 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
| 752 else | |
| 753 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl))); | |
| 754 PUT_SDB_SCL (C_TPDEF); | |
| 755 break; | |
| 756 | |
| 757 case PARM_DECL: | |
| 758 /* Parm decls go in their own separate chains | |
| 759 and are output by sdbout_reg_parms and sdbout_parms. */ | |
| 760 gcc_unreachable (); | |
| 761 | |
| 762 case VAR_DECL: | |
| 763 /* Don't mention a variable that is external. | |
| 764 Let the file that defines it describe it. */ | |
| 765 if (DECL_EXTERNAL (decl)) | |
| 766 return; | |
| 767 | |
| 768 /* Ignore __FUNCTION__, etc. */ | |
| 769 if (DECL_IGNORED_P (decl)) | |
| 770 return; | |
| 771 | |
| 772 /* If there was an error in the declaration, don't dump core | |
| 773 if there is no RTL associated with the variable doesn't | |
| 774 exist. */ | |
| 775 if (!DECL_RTL_SET_P (decl)) | |
| 776 return; | |
| 777 | |
| 778 SET_DECL_RTL (decl, | |
|
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
779 eliminate_regs (DECL_RTL (decl), VOIDmode, NULL_RTX)); |
| 0 | 780 #ifdef LEAF_REG_REMAP |
| 781 if (current_function_uses_only_leaf_regs) | |
| 782 leaf_renumber_regs_insn (DECL_RTL (decl)); | |
| 783 #endif | |
| 784 value = DECL_RTL (decl); | |
| 785 | |
| 786 /* Don't mention a variable at all | |
| 787 if it was completely optimized into nothingness. | |
| 788 | |
| 789 If DECL was from an inline function, then its rtl | |
| 790 is not identically the rtl that was used in this | |
| 791 particular compilation. */ | |
| 792 if (REG_P (value)) | |
| 793 { | |
| 794 regno = REGNO (value); | |
| 795 if (regno >= FIRST_PSEUDO_REGISTER) | |
| 796 return; | |
| 797 } | |
| 798 else if (GET_CODE (value) == SUBREG) | |
| 799 { | |
| 800 while (GET_CODE (value) == SUBREG) | |
| 801 value = SUBREG_REG (value); | |
| 802 if (REG_P (value)) | |
| 803 { | |
| 804 if (REGNO (value) >= FIRST_PSEUDO_REGISTER) | |
| 805 return; | |
| 806 } | |
| 807 regno = REGNO (alter_subreg (&value)); | |
| 808 SET_DECL_RTL (decl, value); | |
| 809 } | |
| 810 /* Don't output anything if an auto variable | |
| 811 gets RTL that is static. | |
| 812 GAS version 2.2 can't handle such output. */ | |
| 813 else if (MEM_P (value) && CONSTANT_P (XEXP (value, 0)) | |
| 814 && ! TREE_STATIC (decl)) | |
| 815 return; | |
| 816 | |
| 817 /* Emit any structure, union, or enum type that has not been output. | |
| 818 This occurs for tag-less structs (et al) used to declare variables | |
| 819 within functions. */ | |
| 820 if (TREE_CODE (type) == ENUMERAL_TYPE | |
| 821 || TREE_CODE (type) == RECORD_TYPE | |
| 822 || TREE_CODE (type) == UNION_TYPE | |
| 823 || TREE_CODE (type) == QUAL_UNION_TYPE) | |
| 824 { | |
| 825 if (COMPLETE_TYPE_P (type) /* not a forward reference */ | |
| 826 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */ | |
| 827 sdbout_one_type (type); | |
| 828 } | |
| 829 | |
| 830 /* Defer SDB information for top-level initialized variables! */ | |
| 831 if (! local | |
| 832 && MEM_P (value) | |
| 833 && DECL_INITIAL (decl)) | |
| 834 return; | |
| 835 | |
| 836 /* C++ in 2.3 makes nameless symbols. That will be fixed later. | |
| 837 For now, avoid crashing. */ | |
| 838 if (DECL_NAME (decl) == NULL_TREE) | |
| 839 return; | |
| 840 | |
| 841 /* Record the name for, starting a symtab entry. */ | |
| 842 if (local) | |
| 843 name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
| 844 else | |
| 845 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
| 846 | |
| 847 if (MEM_P (value) | |
| 848 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF) | |
| 849 { | |
| 850 PUT_SDB_DEF (name); | |
| 851 if (TREE_PUBLIC (decl)) | |
| 852 { | |
| 853 PUT_SDB_VAL (XEXP (value, 0)); | |
| 854 PUT_SDB_SCL (C_EXT); | |
| 855 } | |
| 856 else | |
| 857 { | |
| 858 PUT_SDB_VAL (XEXP (value, 0)); | |
| 859 PUT_SDB_SCL (C_STAT); | |
| 860 } | |
| 861 } | |
| 862 else if (regno >= 0) | |
| 863 { | |
| 864 PUT_SDB_DEF (name); | |
| 865 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno)); | |
| 866 PUT_SDB_SCL (C_REG); | |
| 867 } | |
| 868 else if (MEM_P (value) | |
| 869 && (MEM_P (XEXP (value, 0)) | |
| 870 || (REG_P (XEXP (value, 0)) | |
| 871 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM | |
| 872 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM))) | |
| 873 /* If the value is indirect by memory or by a register | |
| 874 that isn't the frame pointer | |
| 875 then it means the object is variable-sized and address through | |
| 876 that register or stack slot. COFF has no way to represent this | |
| 877 so all we can do is output the variable as a pointer. */ | |
| 878 { | |
| 879 PUT_SDB_DEF (name); | |
| 880 if (REG_P (XEXP (value, 0))) | |
| 881 { | |
| 882 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0)))); | |
| 883 PUT_SDB_SCL (C_REG); | |
| 884 } | |
| 885 else | |
| 886 { | |
| 887 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) | |
| 888 (CONST_INT...)))). | |
| 889 We want the value of that CONST_INT. */ | |
| 890 /* Encore compiler hates a newline in a macro arg, it seems. */ | |
| 891 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
| 892 (XEXP (XEXP (value, 0), 0))); | |
| 893 PUT_SDB_SCL (C_AUTO); | |
| 894 } | |
| 895 | |
| 896 /* Effectively do build_pointer_type, but don't cache this type, | |
| 897 since it might be temporary whereas the type it points to | |
| 898 might have been saved for inlining. */ | |
| 899 /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
| 900 type = make_node (POINTER_TYPE); | |
| 901 TREE_TYPE (type) = TREE_TYPE (decl); | |
| 902 } | |
| 903 else if (MEM_P (value) | |
| 904 && ((GET_CODE (XEXP (value, 0)) == PLUS | |
| 905 && REG_P (XEXP (XEXP (value, 0), 0)) | |
|
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
906 && CONST_INT_P (XEXP (XEXP (value, 0), 1))) |
| 0 | 907 /* This is for variables which are at offset zero from |
| 908 the frame pointer. This happens on the Alpha. | |
| 909 Non-frame pointer registers are excluded above. */ | |
| 910 || (REG_P (XEXP (value, 0))))) | |
| 911 { | |
| 912 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) | |
| 913 or (MEM (REG...)). We want the value of that CONST_INT | |
| 914 or zero. */ | |
| 915 PUT_SDB_DEF (name); | |
| 916 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0))); | |
| 917 PUT_SDB_SCL (C_AUTO); | |
| 918 } | |
| 919 else | |
| 920 { | |
| 921 /* It is something we don't know how to represent for SDB. */ | |
| 922 return; | |
| 923 } | |
| 924 break; | |
| 925 | |
| 926 default: | |
| 927 break; | |
| 928 } | |
| 929 PUT_SDB_TYPE (plain_type (type)); | |
| 930 PUT_SDB_ENDEF; | |
| 931 } | |
| 932 | |
| 933 /* Output SDB information for a top-level initialized variable | |
| 934 that has been delayed. */ | |
| 935 | |
| 936 static void | |
| 937 sdbout_toplevel_data (tree decl) | |
| 938 { | |
| 939 tree type = TREE_TYPE (decl); | |
| 940 | |
| 941 if (DECL_IGNORED_P (decl)) | |
| 942 return; | |
| 943 | |
| 944 gcc_assert (TREE_CODE (decl) == VAR_DECL); | |
| 945 gcc_assert (MEM_P (DECL_RTL (decl))); | |
| 946 gcc_assert (DECL_INITIAL (decl)); | |
| 947 | |
| 948 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
| 949 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
| 950 if (TREE_PUBLIC (decl)) | |
| 951 { | |
| 952 PUT_SDB_SCL (C_EXT); | |
| 953 } | |
| 954 else | |
| 955 { | |
| 956 PUT_SDB_SCL (C_STAT); | |
| 957 } | |
| 958 PUT_SDB_TYPE (plain_type (type)); | |
| 959 PUT_SDB_ENDEF; | |
| 960 } | |
| 961 | |
| 962 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 963 | |
| 964 /* Machinery to record and output anonymous types. */ | |
| 965 | |
| 966 static void | |
| 967 sdbout_queue_anonymous_type (tree type) | |
| 968 { | |
| 969 anonymous_types = tree_cons (NULL_TREE, type, anonymous_types); | |
| 970 } | |
| 971 | |
| 972 static void | |
| 973 sdbout_dequeue_anonymous_types (void) | |
| 974 { | |
| 975 tree types, link; | |
| 976 | |
| 977 while (anonymous_types) | |
| 978 { | |
| 979 types = nreverse (anonymous_types); | |
| 980 anonymous_types = NULL_TREE; | |
| 981 | |
| 982 for (link = types; link; link = TREE_CHAIN (link)) | |
| 983 { | |
| 984 tree type = TREE_VALUE (link); | |
| 985 | |
| 986 if (type && ! TREE_ASM_WRITTEN (type)) | |
| 987 sdbout_one_type (type); | |
| 988 } | |
| 989 } | |
| 990 } | |
| 991 | |
| 992 #endif | |
| 993 | |
| 994 /* Given a chain of ..._TYPE nodes, all of which have names, | |
| 995 output definitions of those names, as typedefs. */ | |
| 996 | |
| 997 void | |
| 998 sdbout_types (tree types) | |
| 999 { | |
| 1000 tree link; | |
| 1001 | |
| 1002 for (link = types; link; link = TREE_CHAIN (link)) | |
| 1003 sdbout_one_type (link); | |
| 1004 | |
| 1005 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 1006 sdbout_dequeue_anonymous_types (); | |
| 1007 #endif | |
| 1008 } | |
| 1009 | |
| 1010 static void | |
| 1011 sdbout_type (tree type) | |
| 1012 { | |
| 1013 if (type == error_mark_node) | |
| 1014 type = integer_type_node; | |
| 1015 PUT_SDB_TYPE (plain_type (type)); | |
| 1016 } | |
| 1017 | |
| 1018 /* Output types of the fields of type TYPE, if they are structs. | |
| 1019 | |
| 1020 Formerly did not chase through pointer types, since that could be circular. | |
| 1021 They must come before TYPE, since forward refs are not allowed. | |
| 1022 Now james@bigtex.cactus.org says to try them. */ | |
| 1023 | |
| 1024 static void | |
| 1025 sdbout_field_types (tree type) | |
| 1026 { | |
| 1027 tree tail; | |
| 1028 | |
| 1029 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail)) | |
| 1030 /* This condition should match the one for emitting the actual | |
| 1031 members below. */ | |
| 1032 if (TREE_CODE (tail) == FIELD_DECL | |
| 1033 && DECL_NAME (tail) | |
| 1034 && DECL_SIZE (tail) | |
| 1035 && host_integerp (DECL_SIZE (tail), 1) | |
| 1036 && host_integerp (bit_position (tail), 0)) | |
| 1037 { | |
| 1038 if (POINTER_TYPE_P (TREE_TYPE (tail))) | |
| 1039 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail))); | |
| 1040 else | |
| 1041 sdbout_one_type (TREE_TYPE (tail)); | |
| 1042 } | |
| 1043 } | |
| 1044 | |
| 1045 /* Use this to put out the top level defined record and union types | |
| 1046 for later reference. If this is a struct with a name, then put that | |
| 1047 name out. Other unnamed structs will have .xxfake labels generated so | |
| 1048 that they may be referred to later. | |
| 1049 The label will be stored in the KNOWN_TYPE_TAG slot of a type. | |
| 1050 It may NOT be called recursively. */ | |
| 1051 | |
| 1052 static void | |
| 1053 sdbout_one_type (tree type) | |
| 1054 { | |
| 1055 if (current_function_decl != NULL_TREE | |
| 1056 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE) | |
| 1057 ; /* Don't change section amid function. */ | |
| 1058 else | |
| 1059 switch_to_section (text_section); | |
| 1060 | |
| 1061 switch (TREE_CODE (type)) | |
| 1062 { | |
| 1063 case RECORD_TYPE: | |
| 1064 case UNION_TYPE: | |
| 1065 case QUAL_UNION_TYPE: | |
| 1066 case ENUMERAL_TYPE: | |
| 1067 type = TYPE_MAIN_VARIANT (type); | |
| 1068 /* Don't output a type twice. */ | |
| 1069 if (TREE_ASM_WRITTEN (type)) | |
| 1070 /* James said test TREE_ASM_BEING_WRITTEN here. */ | |
| 1071 return; | |
| 1072 | |
| 1073 /* Output nothing if type is not yet defined. */ | |
| 1074 if (!COMPLETE_TYPE_P (type)) | |
| 1075 return; | |
| 1076 | |
| 1077 TREE_ASM_WRITTEN (type) = 1; | |
| 1078 | |
| 1079 /* This is reputed to cause trouble with the following case, | |
| 1080 but perhaps checking TYPE_SIZE above will fix it. */ | |
| 1081 | |
| 1082 /* Here is a testcase: | |
| 1083 | |
| 1084 struct foo { | |
| 1085 struct badstr *bbb; | |
| 1086 } forwardref; | |
| 1087 | |
| 1088 typedef struct intermediate { | |
| 1089 int aaaa; | |
| 1090 } intermediate_ref; | |
| 1091 | |
| 1092 typedef struct badstr { | |
| 1093 int ccccc; | |
| 1094 } badtype; */ | |
| 1095 | |
| 1096 /* This change, which ought to make better output, | |
| 1097 used to make the COFF assembler unhappy. | |
| 1098 Changes involving KNOWN_TYPE_TAG may fix the problem. */ | |
| 1099 /* Before really doing anything, output types we want to refer to. */ | |
| 1100 /* Note that in version 1 the following two lines | |
| 1101 are not used if forward references are in use. */ | |
| 1102 if (TREE_CODE (type) != ENUMERAL_TYPE) | |
| 1103 sdbout_field_types (type); | |
| 1104 | |
| 1105 /* Output a structure type. */ | |
| 1106 { | |
| 1107 int size = int_size_in_bytes (type); | |
| 1108 int member_scl = 0; | |
| 1109 tree tem; | |
| 1110 | |
| 1111 /* Record the type tag, but not in its permanent place just yet. */ | |
| 1112 sdbout_record_type_name (type); | |
| 1113 | |
| 1114 PUT_SDB_DEF (KNOWN_TYPE_TAG (type)); | |
| 1115 | |
| 1116 switch (TREE_CODE (type)) | |
| 1117 { | |
| 1118 case UNION_TYPE: | |
| 1119 case QUAL_UNION_TYPE: | |
| 1120 PUT_SDB_SCL (C_UNTAG); | |
| 1121 PUT_SDB_TYPE (T_UNION); | |
| 1122 member_scl = C_MOU; | |
| 1123 break; | |
| 1124 | |
| 1125 case RECORD_TYPE: | |
| 1126 PUT_SDB_SCL (C_STRTAG); | |
| 1127 PUT_SDB_TYPE (T_STRUCT); | |
| 1128 member_scl = C_MOS; | |
| 1129 break; | |
| 1130 | |
| 1131 case ENUMERAL_TYPE: | |
| 1132 PUT_SDB_SCL (C_ENTAG); | |
| 1133 PUT_SDB_TYPE (T_ENUM); | |
| 1134 member_scl = C_MOE; | |
| 1135 break; | |
| 1136 | |
| 1137 default: | |
| 1138 break; | |
| 1139 } | |
| 1140 | |
| 1141 PUT_SDB_SIZE (size); | |
| 1142 PUT_SDB_ENDEF; | |
| 1143 | |
| 1144 /* Print out the base class information with fields | |
| 1145 named after the types they hold. */ | |
| 1146 /* This is only relevant to aggregate types. TYPE_BINFO is used | |
| 1147 for other purposes in an ENUMERAL_TYPE, so we must exclude that | |
| 1148 case. */ | |
| 1149 if (TREE_CODE (type) != ENUMERAL_TYPE && TYPE_BINFO (type)) | |
| 1150 { | |
| 1151 int i; | |
| 1152 tree binfo, child; | |
| 1153 | |
| 1154 for (binfo = TYPE_BINFO (type), i = 0; | |
| 1155 BINFO_BASE_ITERATE (binfo, i, child); i++) | |
| 1156 { | |
| 1157 tree child_type = BINFO_TYPE (child); | |
| 1158 tree child_type_name; | |
|
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1159 |
| 0 | 1160 if (TYPE_NAME (child_type) == 0) |
| 1161 continue; | |
| 1162 if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE) | |
| 1163 child_type_name = TYPE_NAME (child_type); | |
| 1164 else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL) | |
| 1165 { | |
| 1166 child_type_name = DECL_NAME (TYPE_NAME (child_type)); | |
| 1167 if (child_type_name && template_name_p (child_type_name)) | |
| 1168 child_type_name | |
| 1169 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type)); | |
| 1170 } | |
| 1171 else | |
| 1172 continue; | |
| 1173 | |
| 1174 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name)); | |
| 1175 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0)); | |
| 1176 PUT_SDB_SCL (member_scl); | |
| 1177 sdbout_type (BINFO_TYPE (child)); | |
| 1178 PUT_SDB_ENDEF; | |
| 1179 } | |
| 1180 } | |
| 1181 | |
| 1182 /* Output the individual fields. */ | |
| 1183 | |
| 1184 if (TREE_CODE (type) == ENUMERAL_TYPE) | |
| 1185 { | |
| 1186 for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) | |
| 1187 { | |
| 1188 tree value = TREE_VALUE (tem); | |
| 1189 | |
| 1190 if (TREE_CODE (value) == CONST_DECL) | |
| 1191 value = DECL_INITIAL (value); | |
| 1192 | |
| 1193 if (host_integerp (value, 0)) | |
| 1194 { | |
| 1195 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem))); | |
| 1196 PUT_SDB_INT_VAL (tree_low_cst (value, 0)); | |
| 1197 PUT_SDB_SCL (C_MOE); | |
| 1198 PUT_SDB_TYPE (T_MOE); | |
| 1199 PUT_SDB_ENDEF; | |
| 1200 } | |
| 1201 } | |
| 1202 } | |
| 1203 else /* record or union type */ | |
| 1204 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
| 1205 /* Output the name, type, position (in bits), size (in bits) | |
| 1206 of each field. */ | |
| 1207 | |
| 1208 /* Omit here the nameless fields that are used to skip bits. | |
| 1209 Also omit fields with variable size or position. | |
| 1210 Also omit non FIELD_DECL nodes that GNU C++ may put here. */ | |
| 1211 if (TREE_CODE (tem) == FIELD_DECL | |
| 1212 && DECL_NAME (tem) | |
| 1213 && DECL_SIZE (tem) | |
| 1214 && host_integerp (DECL_SIZE (tem), 1) | |
| 1215 && host_integerp (bit_position (tem), 0)) | |
| 1216 { | |
| 1217 const char *name; | |
| 1218 | |
| 1219 name = IDENTIFIER_POINTER (DECL_NAME (tem)); | |
| 1220 PUT_SDB_DEF (name); | |
| 1221 if (DECL_BIT_FIELD_TYPE (tem)) | |
| 1222 { | |
| 1223 PUT_SDB_INT_VAL (int_bit_position (tem)); | |
| 1224 PUT_SDB_SCL (C_FIELD); | |
| 1225 sdbout_type (DECL_BIT_FIELD_TYPE (tem)); | |
| 1226 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1)); | |
| 1227 } | |
| 1228 else | |
| 1229 { | |
| 1230 PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT); | |
| 1231 PUT_SDB_SCL (member_scl); | |
| 1232 sdbout_type (TREE_TYPE (tem)); | |
| 1233 } | |
| 1234 PUT_SDB_ENDEF; | |
| 1235 } | |
| 1236 /* Output end of a structure,union, or enumeral definition. */ | |
| 1237 | |
| 1238 PUT_SDB_PLAIN_DEF ("eos"); | |
| 1239 PUT_SDB_INT_VAL (size); | |
| 1240 PUT_SDB_SCL (C_EOS); | |
| 1241 PUT_SDB_TAG (KNOWN_TYPE_TAG (type)); | |
| 1242 PUT_SDB_SIZE (size); | |
| 1243 PUT_SDB_ENDEF; | |
| 1244 break; | |
|
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1245 } |
| 0 | 1246 |
|
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1247 default: |
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1248 break; |
| 0 | 1249 } |
| 1250 } | |
| 1251 | |
| 1252 /* The following two functions output definitions of function parameters. | |
| 1253 Each parameter gets a definition locating it in the parameter list. | |
| 1254 Each parameter that is a register variable gets a second definition | |
| 1255 locating it in the register. | |
| 1256 | |
| 1257 Printing or argument lists in gdb uses the definitions that | |
| 1258 locate in the parameter list. But reference to the variable in | |
| 1259 expressions uses preferentially the definition as a register. */ | |
| 1260 | |
| 1261 /* Output definitions, referring to storage in the parmlist, | |
| 1262 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
| 1263 | |
| 1264 static void | |
| 1265 sdbout_parms (tree parms) | |
| 1266 { | |
| 1267 for (; parms; parms = TREE_CHAIN (parms)) | |
| 1268 if (DECL_NAME (parms)) | |
| 1269 { | |
| 1270 int current_sym_value = 0; | |
| 1271 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); | |
| 1272 | |
| 1273 if (name == 0 || *name == 0) | |
| 1274 name = gen_fake_label (); | |
| 1275 | |
| 1276 /* Perform any necessary register eliminations on the parameter's rtl, | |
| 1277 so that the debugging output will be accurate. */ | |
| 1278 DECL_INCOMING_RTL (parms) | |
|
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1279 = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX); |
| 0 | 1280 SET_DECL_RTL (parms, |
|
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1281 eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX)); |
| 0 | 1282 |
| 1283 if (PARM_PASSED_IN_MEMORY (parms)) | |
| 1284 { | |
| 1285 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
| 1286 tree type; | |
| 1287 | |
| 1288 /* ??? Here we assume that the parm address is indexed | |
| 1289 off the frame pointer or arg pointer. | |
| 1290 If that is not true, we produce meaningless results, | |
| 1291 but do not crash. */ | |
| 1292 if (GET_CODE (addr) == PLUS | |
|
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1293 && CONST_INT_P (XEXP (addr, 1))) |
| 0 | 1294 current_sym_value = INTVAL (XEXP (addr, 1)); |
| 1295 else | |
| 1296 current_sym_value = 0; | |
| 1297 | |
| 1298 if (REG_P (DECL_RTL (parms)) | |
| 1299 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
| 1300 type = DECL_ARG_TYPE (parms); | |
| 1301 else | |
| 1302 { | |
| 1303 int original_sym_value = current_sym_value; | |
| 1304 | |
| 1305 /* This is the case where the parm is passed as an int or | |
| 1306 double and it is converted to a char, short or float | |
| 1307 and stored back in the parmlist. In this case, describe | |
| 1308 the parm with the variable's declared type, and adjust | |
| 1309 the address if the least significant bytes (which we are | |
| 1310 using) are not the first ones. */ | |
| 1311 if (BYTES_BIG_ENDIAN | |
| 1312 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
| 1313 current_sym_value += | |
| 1314 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
| 1315 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
| 1316 | |
| 1317 if (MEM_P (DECL_RTL (parms)) | |
| 1318 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
| 1319 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
| 1320 == CONST_INT) | |
| 1321 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
| 1322 == current_sym_value)) | |
| 1323 type = TREE_TYPE (parms); | |
| 1324 else | |
| 1325 { | |
| 1326 current_sym_value = original_sym_value; | |
| 1327 type = DECL_ARG_TYPE (parms); | |
| 1328 } | |
| 1329 } | |
| 1330 | |
| 1331 PUT_SDB_DEF (name); | |
| 1332 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr)); | |
| 1333 PUT_SDB_SCL (C_ARG); | |
| 1334 PUT_SDB_TYPE (plain_type (type)); | |
| 1335 PUT_SDB_ENDEF; | |
| 1336 } | |
| 1337 else if (REG_P (DECL_RTL (parms))) | |
| 1338 { | |
| 1339 rtx best_rtl; | |
| 1340 /* Parm passed in registers and lives in registers or nowhere. */ | |
| 1341 | |
| 1342 /* If parm lives in a register, use that register; | |
| 1343 pretend the parm was passed there. It would be more consistent | |
| 1344 to describe the register where the parm was passed, | |
| 1345 but in practice that register usually holds something else. */ | |
| 1346 if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
| 1347 best_rtl = DECL_RTL (parms); | |
| 1348 /* If the parm lives nowhere, | |
| 1349 use the register where it was passed. */ | |
| 1350 else | |
| 1351 best_rtl = DECL_INCOMING_RTL (parms); | |
| 1352 | |
| 1353 PUT_SDB_DEF (name); | |
| 1354 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl))); | |
| 1355 PUT_SDB_SCL (C_REGPARM); | |
| 1356 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1357 PUT_SDB_ENDEF; | |
| 1358 } | |
| 1359 else if (MEM_P (DECL_RTL (parms)) | |
| 1360 && XEXP (DECL_RTL (parms), 0) != const0_rtx) | |
| 1361 { | |
| 1362 /* Parm was passed in registers but lives on the stack. */ | |
| 1363 | |
| 1364 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
| 1365 in which case we want the value of that CONST_INT, | |
| 1366 or (MEM (REG ...)) or (MEM (MEM ...)), | |
| 1367 in which case we use a value of zero. */ | |
| 1368 if (REG_P (XEXP (DECL_RTL (parms), 0)) | |
| 1369 || MEM_P (XEXP (DECL_RTL (parms), 0))) | |
| 1370 current_sym_value = 0; | |
| 1371 else | |
| 1372 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
| 1373 | |
| 1374 /* Again, this assumes the offset is based on the arg pointer. */ | |
| 1375 PUT_SDB_DEF (name); | |
| 1376 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, | |
| 1377 XEXP (DECL_RTL (parms), 0))); | |
| 1378 PUT_SDB_SCL (C_ARG); | |
| 1379 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1380 PUT_SDB_ENDEF; | |
| 1381 } | |
| 1382 } | |
| 1383 } | |
| 1384 | |
| 1385 /* Output definitions for the places where parms live during the function, | |
| 1386 when different from where they were passed, when the parms were passed | |
| 1387 in memory. | |
| 1388 | |
| 1389 It is not useful to do this for parms passed in registers | |
| 1390 that live during the function in different registers, because it is | |
| 1391 impossible to look in the passed register for the passed value, | |
| 1392 so we use the within-the-function register to begin with. | |
| 1393 | |
| 1394 PARMS is a chain of PARM_DECL nodes. */ | |
| 1395 | |
| 1396 static void | |
| 1397 sdbout_reg_parms (tree parms) | |
| 1398 { | |
| 1399 for (; parms; parms = TREE_CHAIN (parms)) | |
| 1400 if (DECL_NAME (parms)) | |
| 1401 { | |
| 1402 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); | |
| 1403 | |
| 1404 /* Report parms that live in registers during the function | |
| 1405 but were passed in memory. */ | |
| 1406 if (REG_P (DECL_RTL (parms)) | |
| 1407 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER | |
| 1408 && PARM_PASSED_IN_MEMORY (parms)) | |
| 1409 { | |
| 1410 if (name == 0 || *name == 0) | |
| 1411 name = gen_fake_label (); | |
| 1412 PUT_SDB_DEF (name); | |
| 1413 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)))); | |
| 1414 PUT_SDB_SCL (C_REG); | |
| 1415 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1416 PUT_SDB_ENDEF; | |
| 1417 } | |
| 1418 /* Report parms that live in memory but not where they were passed. */ | |
| 1419 else if (MEM_P (DECL_RTL (parms)) | |
| 1420 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
|
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1421 && CONST_INT_P (XEXP (XEXP (DECL_RTL (parms), 0), 1)) |
| 0 | 1422 && PARM_PASSED_IN_MEMORY (parms) |
| 1423 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
| 1424 { | |
| 1425 #if 0 /* ??? It is not clear yet what should replace this. */ | |
| 1426 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
| 1427 /* A parm declared char is really passed as an int, | |
| 1428 so it occupies the least significant bytes. | |
| 1429 On a big-endian machine those are not the low-numbered ones. */ | |
| 1430 if (BYTES_BIG_ENDIAN | |
| 1431 && offset != -1 | |
| 1432 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
| 1433 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
| 1434 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
| 1435 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} | |
| 1436 #endif | |
| 1437 { | |
| 1438 if (name == 0 || *name == 0) | |
| 1439 name = gen_fake_label (); | |
| 1440 PUT_SDB_DEF (name); | |
| 1441 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
| 1442 (XEXP (DECL_RTL (parms), 0))); | |
| 1443 PUT_SDB_SCL (C_AUTO); | |
| 1444 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1445 PUT_SDB_ENDEF; | |
| 1446 } | |
| 1447 } | |
| 1448 } | |
| 1449 } | |
| 1450 | |
| 1451 /* Output debug information for a global DECL. Called from toplev.c | |
| 1452 after compilation proper has finished. */ | |
| 1453 | |
| 1454 static void | |
| 1455 sdbout_global_decl (tree decl) | |
| 1456 { | |
| 1457 if (TREE_CODE (decl) == VAR_DECL | |
| 1458 && !DECL_EXTERNAL (decl) | |
| 1459 && DECL_RTL_SET_P (decl)) | |
| 1460 { | |
| 1461 /* The COFF linker can move initialized global vars to the end. | |
| 1462 And that can screw up the symbol ordering. Defer those for | |
| 1463 sdbout_finish (). */ | |
| 1464 if (!DECL_INITIAL (decl) || !TREE_PUBLIC (decl)) | |
| 1465 sdbout_symbol (decl, 0); | |
| 1466 else | |
|
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1467 VEC_safe_push (tree, gc, deferred_global_decls, decl); |
| 0 | 1468 |
| 1469 /* Output COFF information for non-global file-scope initialized | |
| 1470 variables. */ | |
| 1471 if (DECL_INITIAL (decl) && MEM_P (DECL_RTL (decl))) | |
| 1472 sdbout_toplevel_data (decl); | |
| 1473 } | |
| 1474 } | |
| 1475 | |
| 1476 /* Output initialized global vars at the end, in the order of | |
| 1477 definition. See comment in sdbout_global_decl. */ | |
| 1478 | |
| 1479 static void | |
| 1480 sdbout_finish (const char *main_filename ATTRIBUTE_UNUSED) | |
| 1481 { | |
| 1482 size_t i; | |
|
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1483 tree decl; |
| 0 | 1484 |
|
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1485 for (i = 0; VEC_iterate (tree, deferred_global_decls, i, decl); i++) |
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1486 sdbout_symbol (decl, 0); |
| 0 | 1487 } |
| 1488 | |
| 1489 /* Describe the beginning of an internal block within a function. | |
| 1490 Also output descriptions of variables defined in this block. | |
| 1491 | |
| 1492 N is the number of the block, by order of beginning, counting from 1, | |
| 1493 and not counting the outermost (function top-level) block. | |
| 1494 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
| 1495 if the count starts at 0 for the outermost one. */ | |
| 1496 | |
| 1497 static void | |
| 1498 sdbout_begin_block (unsigned int line, unsigned int n) | |
| 1499 { | |
| 1500 tree decl = current_function_decl; | |
| 1501 MAKE_LINE_SAFE (line); | |
| 1502 | |
| 1503 /* The SCO compiler does not emit a separate block for the function level | |
| 1504 scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
| 1505 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
| 1506 #ifndef MIPS_DEBUGGING_INFO | |
| 1507 if (n != 1) | |
| 1508 #endif | |
| 1509 PUT_SDB_BLOCK_START (line - sdb_begin_function_line); | |
| 1510 | |
| 1511 if (n == 1) | |
| 1512 { | |
| 1513 /* Include the outermost BLOCK's variables in block 1. */ | |
| 1514 do_block = BLOCK_NUMBER (DECL_INITIAL (decl)); | |
| 1515 sdbout_block (DECL_INITIAL (decl)); | |
| 1516 } | |
| 1517 /* If -g1, suppress all the internal symbols of functions | |
| 1518 except for arguments. */ | |
| 1519 if (debug_info_level != DINFO_LEVEL_TERSE) | |
| 1520 { | |
| 1521 do_block = n; | |
| 1522 sdbout_block (DECL_INITIAL (decl)); | |
| 1523 } | |
| 1524 | |
| 1525 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 1526 sdbout_dequeue_anonymous_types (); | |
| 1527 #endif | |
| 1528 } | |
| 1529 | |
| 1530 /* Describe the end line-number of an internal block within a function. */ | |
| 1531 | |
| 1532 static void | |
| 1533 sdbout_end_block (unsigned int line, unsigned int n ATTRIBUTE_UNUSED) | |
| 1534 { | |
| 1535 MAKE_LINE_SAFE (line); | |
| 1536 | |
| 1537 /* The SCO compiler does not emit a separate block for the function level | |
| 1538 scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
| 1539 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
| 1540 #ifndef MIPS_DEBUGGING_INFO | |
| 1541 if (n != 1) | |
| 1542 #endif | |
| 1543 PUT_SDB_BLOCK_END (line - sdb_begin_function_line); | |
| 1544 } | |
| 1545 | |
| 1546 /* Output a line number symbol entry for source file FILENAME and line | |
| 1547 number LINE. */ | |
| 1548 | |
| 1549 static void | |
|
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1550 sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED, |
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1551 int discriminator ATTRIBUTE_UNUSED, |
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1552 bool is_stmt ATTRIBUTE_UNUSED) |
| 0 | 1553 { |
| 1554 /* COFF relative line numbers must be positive. */ | |
| 1555 if ((int) line > sdb_begin_function_line) | |
| 1556 { | |
| 1557 #ifdef SDB_OUTPUT_SOURCE_LINE | |
| 1558 SDB_OUTPUT_SOURCE_LINE (asm_out_file, line); | |
| 1559 #else | |
| 1560 fprintf (asm_out_file, "\t.ln\t%d\n", | |
| 1561 ((sdb_begin_function_line > -1) | |
| 1562 ? line - sdb_begin_function_line : 1)); | |
| 1563 #endif | |
| 1564 } | |
| 1565 } | |
| 1566 | |
| 1567 /* Output sdb info for the current function name. | |
| 1568 Called from assemble_start_function. */ | |
| 1569 | |
| 1570 static void | |
| 1571 sdbout_begin_function (tree decl ATTRIBUTE_UNUSED) | |
| 1572 { | |
| 1573 sdbout_symbol (current_function_decl, 0); | |
| 1574 } | |
| 1575 | |
| 1576 /* Called at beginning of function body (before or after prologue, | |
| 1577 depending on MIPS_DEBUGGING_INFO). Record the function's starting | |
| 1578 line number, so we can output relative line numbers for the other | |
| 1579 lines. Describe beginning of outermost block. Also describe the | |
| 1580 parameter list. */ | |
| 1581 | |
| 1582 #ifndef MIPS_DEBUGGING_INFO | |
| 1583 static void | |
| 1584 sdbout_begin_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) | |
| 1585 { | |
| 1586 sdbout_end_prologue (line, file); | |
| 1587 } | |
| 1588 #endif | |
| 1589 | |
| 1590 static void | |
| 1591 sdbout_end_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) | |
| 1592 { | |
| 1593 sdb_begin_function_line = line - 1; | |
| 1594 PUT_SDB_FUNCTION_START (line); | |
| 1595 sdbout_parms (DECL_ARGUMENTS (current_function_decl)); | |
| 1596 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl)); | |
| 1597 } | |
| 1598 | |
| 1599 /* Called at end of function (before epilogue). | |
| 1600 Describe end of outermost block. */ | |
| 1601 | |
| 1602 static void | |
| 1603 sdbout_end_function (unsigned int line) | |
| 1604 { | |
| 1605 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 1606 sdbout_dequeue_anonymous_types (); | |
| 1607 #endif | |
| 1608 | |
| 1609 MAKE_LINE_SAFE (line); | |
| 1610 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line); | |
| 1611 | |
| 1612 /* Indicate we are between functions, for line-number output. */ | |
| 1613 sdb_begin_function_line = -1; | |
| 1614 } | |
| 1615 | |
| 1616 /* Output sdb info for the absolute end of a function. | |
| 1617 Called after the epilogue is output. */ | |
| 1618 | |
| 1619 static void | |
| 1620 sdbout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, | |
| 1621 const char *file ATTRIBUTE_UNUSED) | |
| 1622 { | |
| 1623 const char *const name ATTRIBUTE_UNUSED | |
| 1624 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); | |
| 1625 | |
| 1626 #ifdef PUT_SDB_EPILOGUE_END | |
| 1627 PUT_SDB_EPILOGUE_END (name); | |
| 1628 #else | |
| 1629 fprintf (asm_out_file, "\t.def\t"); | |
| 1630 assemble_name (asm_out_file, name); | |
| 1631 fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", | |
| 1632 SDB_DELIM, SDB_DELIM, SDB_DELIM); | |
| 1633 #endif | |
| 1634 } | |
| 1635 | |
| 1636 /* Output sdb info for the given label. Called only if LABEL_NAME (insn) | |
| 1637 is present. */ | |
| 1638 | |
| 1639 static void | |
| 1640 sdbout_label (rtx insn) | |
| 1641 { | |
| 1642 PUT_SDB_DEF (LABEL_NAME (insn)); | |
| 1643 PUT_SDB_VAL (insn); | |
| 1644 PUT_SDB_SCL (C_LABEL); | |
| 1645 PUT_SDB_TYPE (T_NULL); | |
| 1646 PUT_SDB_ENDEF; | |
| 1647 } | |
| 1648 | |
| 1649 /* Change to reading from a new source file. */ | |
| 1650 | |
| 1651 static void | |
| 1652 sdbout_start_source_file (unsigned int line ATTRIBUTE_UNUSED, | |
| 1653 const char *filename ATTRIBUTE_UNUSED) | |
| 1654 { | |
| 1655 #ifdef MIPS_DEBUGGING_INFO | |
| 1656 struct sdb_file *n = XNEW (struct sdb_file); | |
| 1657 | |
| 1658 n->next = current_file; | |
| 1659 n->name = filename; | |
| 1660 current_file = n; | |
| 1661 output_file_directive (asm_out_file, filename); | |
| 1662 #endif | |
| 1663 } | |
| 1664 | |
| 1665 /* Revert to reading a previous source file. */ | |
| 1666 | |
| 1667 static void | |
| 1668 sdbout_end_source_file (unsigned int line ATTRIBUTE_UNUSED) | |
| 1669 { | |
| 1670 #ifdef MIPS_DEBUGGING_INFO | |
| 1671 struct sdb_file *next; | |
| 1672 | |
| 1673 next = current_file->next; | |
| 1674 free (current_file); | |
| 1675 current_file = next; | |
| 1676 output_file_directive (asm_out_file, current_file->name); | |
| 1677 #endif | |
| 1678 } | |
| 1679 | |
| 1680 /* Set up for SDB output at the start of compilation. */ | |
| 1681 | |
| 1682 static void | |
| 1683 sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED) | |
| 1684 { | |
| 1685 tree t; | |
| 1686 | |
| 1687 #ifdef MIPS_DEBUGGING_INFO | |
| 1688 current_file = XNEW (struct sdb_file); | |
| 1689 current_file->next = NULL; | |
| 1690 current_file->name = input_file_name; | |
| 1691 #endif | |
| 1692 | |
|
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1693 deferred_global_decls = VEC_alloc (tree, gc, 12); |
| 0 | 1694 |
| 1695 /* Emit debug information which was queued by sdbout_symbol before | |
| 1696 we got here. */ | |
| 1697 sdbout_initialized = true; | |
| 1698 | |
| 1699 for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t)) | |
| 1700 sdbout_symbol (TREE_VALUE (t), 0); | |
| 1701 preinit_symbols = 0; | |
| 1702 } | |
| 1703 | |
| 1704 #else /* SDB_DEBUGGING_INFO */ | |
| 1705 | |
| 1706 /* This should never be used, but its address is needed for comparisons. */ | |
|
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1707 const struct gcc_debug_hooks sdb_debug_hooks = |
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1708 { |
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1709 0, /* init */ |
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1710 0, /* finish */ |
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1711 0, /* assembly_start */ |
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1712 0, /* define */ |
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1713 0, /* undef */ |
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1714 0, /* start_source_file */ |
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1715 0, /* end_source_file */ |
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1716 0, /* begin_block */ |
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1717 0, /* end_block */ |
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1718 0, /* ignore_block */ |
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1719 0, /* source_line */ |
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1720 0, /* begin_prologue */ |
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1721 0, /* end_prologue */ |
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1722 0, /* end_epilogue */ |
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1723 0, /* begin_function */ |
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1724 0, /* end_function */ |
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1725 0, /* function_decl */ |
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1726 0, /* global_decl */ |
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1727 0, /* type_decl */ |
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1728 0, /* imported_module_or_decl */ |
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1729 0, /* deferred_inline_function */ |
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1730 0, /* outlining_inline_function */ |
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1731 0, /* label */ |
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1732 0, /* handle_pch */ |
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1733 0, /* var_location */ |
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1734 0, /* switch_text_section */ |
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1735 0, /* direct_call */ |
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1736 0, /* virtual_call_token */ |
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1737 0, /* copy_call_info */ |
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1738 0, /* virtual_call */ |
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1739 0, /* set_name */ |
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1740 0 /* start_end_main_source_file */ |
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1741 }; |
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1742 |
| 0 | 1743 |
| 1744 #endif /* SDB_DEBUGGING_INFO */ | |
| 1745 | |
| 1746 #include "gt-sdbout.h" |