Mercurial > hg > CbC > CbC_gcc
annotate gcc/xcoffout.c @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:39:51 +0900 |
| parents | a06113de4d67 |
| children | f6334be47118 |
| rev | line source |
|---|---|
| 0 | 1 /* Output xcoff-format symbol table information from GNU compiler. |
| 2 Copyright (C) 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, 2004, | |
| 3 2007, 2008 Free Software Foundation, Inc. | |
| 4 | |
| 5 This file is part of GCC. | |
| 6 | |
| 7 GCC is free software; you can redistribute it and/or modify it under | |
| 8 the terms of the GNU General Public License as published by the Free | |
| 9 Software Foundation; either version 3, or (at your option) any later | |
| 10 version. | |
| 11 | |
| 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 /* Output xcoff-format symbol table data. The main functionality is contained | |
| 22 in dbxout.c. This file implements the sdbout-like parts of the xcoff | |
| 23 interface. Many functions are very similar to their counterparts in | |
| 24 sdbout.c. */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 #include "system.h" | |
| 28 #include "coretypes.h" | |
| 29 #include "tm.h" | |
| 30 #include "tree.h" | |
| 31 #include "rtl.h" | |
| 32 #include "flags.h" | |
| 33 #include "toplev.h" | |
| 34 #include "output.h" | |
| 35 #include "ggc.h" | |
| 36 #include "target.h" | |
| 37 #include "debug.h" | |
| 38 | |
| 39 #ifdef XCOFF_DEBUGGING_INFO | |
| 40 | |
| 41 /* This defines the C_* storage classes. */ | |
| 42 #include "xcoff.h" | |
| 43 #include "xcoffout.h" | |
| 44 #include "dbxout.h" | |
| 45 #include "gstab.h" | |
| 46 | |
| 47 /* Line number of beginning of current function, minus one. | |
| 48 Negative means not in a function or not using xcoff. */ | |
| 49 | |
| 50 static int xcoff_begin_function_line = -1; | |
| 51 static int xcoff_inlining = 0; | |
| 52 | |
| 53 /* Name of the current include file. */ | |
| 54 | |
| 55 const char *xcoff_current_include_file; | |
| 56 | |
| 57 /* Name of the current function file. This is the file the `.bf' is | |
| 58 emitted from. In case a line is emitted from a different file, | |
| 59 (by including that file of course), then the line number will be | |
| 60 absolute. */ | |
| 61 | |
| 62 static const char *xcoff_current_function_file; | |
| 63 | |
| 64 /* Names of bss and data sections. These should be unique names for each | |
| 65 compilation unit. */ | |
| 66 | |
| 67 char *xcoff_bss_section_name; | |
| 68 char *xcoff_private_data_section_name; | |
| 69 char *xcoff_read_only_section_name; | |
| 70 | |
| 71 /* Last source file name mentioned in a NOTE insn. */ | |
| 72 | |
| 73 const char *xcoff_lastfile; | |
| 74 | |
| 75 /* Macro definitions used below. */ | |
| 76 | |
| 77 #define ABS_OR_RELATIVE_LINENO(LINENO) \ | |
| 78 ((xcoff_inlining) ? (LINENO) : (LINENO) - xcoff_begin_function_line) | |
| 79 | |
| 80 /* Output source line numbers via ".line". */ | |
| 81 #define ASM_OUTPUT_LINE(FILE,LINENUM) \ | |
| 82 do \ | |
| 83 { \ | |
| 84 if (xcoff_begin_function_line >= 0) \ | |
| 85 fprintf (FILE, "\t.line\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)); \ | |
| 86 } \ | |
| 87 while (0) | |
| 88 | |
| 89 #define ASM_OUTPUT_LFB(FILE,LINENUM) \ | |
| 90 { \ | |
| 91 if (xcoff_begin_function_line == -1) \ | |
| 92 { \ | |
| 93 xcoff_begin_function_line = (LINENUM) - 1;\ | |
| 94 fprintf (FILE, "\t.bf\t%d\n", (LINENUM)); \ | |
| 95 } \ | |
| 96 xcoff_current_function_file \ | |
| 97 = (xcoff_current_include_file \ | |
| 98 ? xcoff_current_include_file : main_input_filename); \ | |
| 99 } | |
| 100 | |
| 101 #define ASM_OUTPUT_LFE(FILE,LINENUM) \ | |
| 102 do \ | |
| 103 { \ | |
| 104 fprintf (FILE, "\t.ef\t%d\n", (LINENUM)); \ | |
| 105 xcoff_begin_function_line = -1; \ | |
| 106 } \ | |
| 107 while (0) | |
| 108 | |
| 109 #define ASM_OUTPUT_LBB(FILE,LINENUM,BLOCKNUM) \ | |
| 110 fprintf (FILE, "\t.bb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) | |
| 111 | |
| 112 #define ASM_OUTPUT_LBE(FILE,LINENUM,BLOCKNUM) \ | |
| 113 fprintf (FILE, "\t.eb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) | |
| 114 | |
| 115 static void xcoffout_block (tree, int, tree); | |
| 116 static void xcoffout_source_file (FILE *, const char *, int); | |
| 117 | |
| 118 /* Support routines for XCOFF debugging info. */ | |
| 119 | |
| 120 struct xcoff_type_number | |
| 121 { | |
| 122 const char *name; | |
| 123 int number; | |
| 124 }; | |
| 125 static const struct xcoff_type_number xcoff_type_numbers[] = { | |
| 126 { "int", -1 }, | |
| 127 { "char", -2 }, | |
| 128 { "short int", -3 }, | |
| 129 { "long int", -4 }, /* fiddled to -31 if 64 bits */ | |
| 130 { "unsigned char", -5 }, | |
| 131 { "signed char", -6 }, | |
| 132 { "short unsigned int", -7 }, | |
| 133 { "unsigned int", -8 }, | |
| 134 /* No such type "unsigned". */ | |
| 135 { "long unsigned int", -10 }, /* fiddled to -32 if 64 bits */ | |
| 136 { "void", -11 }, | |
| 137 { "float", -12 }, | |
| 138 { "double", -13 }, | |
| 139 { "long double", -14 }, | |
| 140 /* Pascal and Fortran types run from -15 to -29. */ | |
| 141 { "wchar", -30 }, /* XXX Should be "wchar_t" ? */ | |
| 142 { "long long int", -31 }, | |
| 143 { "long long unsigned int", -32 }, | |
| 144 /* Additional Fortran types run from -33 to -37. */ | |
| 145 | |
| 146 /* ??? Should also handle built-in C++ and Obj-C types. There perhaps | |
| 147 aren't any that C doesn't already have. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
148 }; |
| 0 | 149 |
| 150 /* Returns an XCOFF fundamental type number for DECL (assumed to be a | |
| 151 TYPE_DECL), or 0 if dbxout.c should assign a type number normally. */ | |
| 152 int | |
| 153 xcoff_assign_fundamental_type_number (tree decl) | |
| 154 { | |
| 155 const char *name; | |
| 156 size_t i; | |
| 157 | |
| 158 /* Do not waste time searching the list for non-intrinsic types. */ | |
| 159 if (DECL_NAME (decl) == 0 || ! DECL_IS_BUILTIN (decl)) | |
| 160 return 0; | |
| 161 | |
| 162 name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
| 163 | |
| 164 /* Linear search, blech, but the list is too small to bother | |
| 165 doing anything else. */ | |
| 166 for (i = 0; i < ARRAY_SIZE (xcoff_type_numbers); i++) | |
| 167 if (!strcmp (xcoff_type_numbers[i].name, name)) | |
| 168 goto found; | |
| 169 return 0; | |
| 170 | |
| 171 found: | |
| 172 /* -4 and -10 should be replaced with -31 and -32, respectively, | |
| 173 when used for a 64-bit type. */ | |
| 174 if (int_size_in_bytes (TREE_TYPE (decl)) == 8) | |
| 175 { | |
| 176 if (xcoff_type_numbers[i].number == -4) | |
| 177 return -31; | |
| 178 if (xcoff_type_numbers[i].number == -10) | |
| 179 return -32; | |
| 180 } | |
| 181 return xcoff_type_numbers[i].number; | |
| 182 } | |
| 183 | |
| 184 /* Print an error message for unrecognized stab codes. */ | |
| 185 | |
| 186 #define UNKNOWN_STAB(STR) \ | |
| 187 internal_error ("no sclass for %s stab (0x%x)", STR, stab) | |
| 188 | |
| 189 /* Conversion routine from BSD stabs to AIX storage classes. */ | |
| 190 | |
| 191 int | |
| 192 stab_to_sclass (int stab) | |
| 193 { | |
| 194 switch (stab) | |
| 195 { | |
| 196 case N_GSYM: | |
| 197 return C_GSYM; | |
| 198 | |
| 199 case N_FNAME: | |
| 200 UNKNOWN_STAB ("N_FNAME"); | |
| 201 | |
| 202 case N_FUN: | |
| 203 return C_FUN; | |
| 204 | |
| 205 case N_STSYM: | |
| 206 case N_LCSYM: | |
| 207 return C_STSYM; | |
| 208 | |
| 209 case N_MAIN: | |
| 210 UNKNOWN_STAB ("N_MAIN"); | |
| 211 | |
| 212 case N_RSYM: | |
| 213 return C_RSYM; | |
| 214 | |
| 215 case N_SSYM: | |
| 216 UNKNOWN_STAB ("N_SSYM"); | |
| 217 | |
| 218 case N_RPSYM: | |
| 219 return C_RPSYM; | |
| 220 | |
| 221 case N_PSYM: | |
| 222 return C_PSYM; | |
| 223 case N_LSYM: | |
| 224 return C_LSYM; | |
| 225 case N_DECL: | |
| 226 return C_DECL; | |
| 227 case N_ENTRY: | |
| 228 return C_ENTRY; | |
| 229 | |
| 230 case N_SO: | |
| 231 UNKNOWN_STAB ("N_SO"); | |
| 232 | |
| 233 case N_SOL: | |
| 234 UNKNOWN_STAB ("N_SOL"); | |
| 235 | |
| 236 case N_SLINE: | |
| 237 UNKNOWN_STAB ("N_SLINE"); | |
| 238 | |
| 239 case N_DSLINE: | |
| 240 UNKNOWN_STAB ("N_DSLINE"); | |
| 241 | |
| 242 case N_BSLINE: | |
| 243 UNKNOWN_STAB ("N_BSLINE"); | |
| 244 | |
| 245 case N_BINCL: | |
| 246 UNKNOWN_STAB ("N_BINCL"); | |
| 247 | |
| 248 case N_EINCL: | |
| 249 UNKNOWN_STAB ("N_EINCL"); | |
| 250 | |
| 251 case N_EXCL: | |
| 252 UNKNOWN_STAB ("N_EXCL"); | |
| 253 | |
| 254 case N_LBRAC: | |
| 255 UNKNOWN_STAB ("N_LBRAC"); | |
| 256 | |
| 257 case N_RBRAC: | |
| 258 UNKNOWN_STAB ("N_RBRAC"); | |
| 259 | |
| 260 case N_BCOMM: | |
| 261 return C_BCOMM; | |
| 262 case N_ECOMM: | |
| 263 return C_ECOMM; | |
| 264 case N_ECOML: | |
| 265 return C_ECOML; | |
| 266 | |
| 267 case N_LENG: | |
| 268 UNKNOWN_STAB ("N_LENG"); | |
| 269 | |
| 270 case N_PC: | |
| 271 UNKNOWN_STAB ("N_PC"); | |
| 272 | |
| 273 case N_M2C: | |
| 274 UNKNOWN_STAB ("N_M2C"); | |
| 275 | |
| 276 case N_SCOPE: | |
| 277 UNKNOWN_STAB ("N_SCOPE"); | |
| 278 | |
| 279 case N_CATCH: | |
| 280 UNKNOWN_STAB ("N_CATCH"); | |
| 281 | |
| 282 case N_OPT: | |
| 283 UNKNOWN_STAB ("N_OPT"); | |
| 284 | |
| 285 default: | |
| 286 UNKNOWN_STAB ("?"); | |
| 287 } | |
| 288 } | |
| 289 | |
| 290 /* Output debugging info to FILE to switch to sourcefile FILENAME. | |
| 291 INLINE_P is true if this is from an inlined function. */ | |
| 292 | |
| 293 static void | |
| 294 xcoffout_source_file (FILE *file, const char *filename, int inline_p) | |
| 295 { | |
| 296 if (filename | |
| 297 && (xcoff_lastfile == 0 || strcmp (filename, xcoff_lastfile) | |
| 298 || (inline_p && ! xcoff_inlining) | |
| 299 || (! inline_p && xcoff_inlining))) | |
| 300 { | |
| 301 if (xcoff_current_include_file) | |
| 302 { | |
| 303 fprintf (file, "\t.ei\t"); | |
| 304 output_quoted_string (file, | |
| 305 remap_debug_filename (xcoff_current_include_file)); | |
| 306 fprintf (file, "\n"); | |
| 307 xcoff_current_include_file = NULL; | |
| 308 } | |
| 309 xcoff_inlining = inline_p; | |
| 310 if (strcmp (main_input_filename, filename) || inline_p) | |
| 311 { | |
| 312 fprintf (file, "\t.bi\t"); | |
| 313 output_quoted_string (file, remap_debug_filename (filename)); | |
| 314 fprintf (file, "\n"); | |
| 315 xcoff_current_include_file = filename; | |
| 316 } | |
| 317 xcoff_lastfile = filename; | |
| 318 } | |
| 319 } | |
| 320 | |
| 321 /* Output a line number symbol entry for location (FILENAME, LINE). */ | |
| 322 | |
| 323 void | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
324 xcoffout_source_line (unsigned int line, const char *filename, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
325 int discriminator ATTRIBUTE_UNUSED, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
326 bool is_stmt ATTRIBUTE_UNUSED) |
| 0 | 327 { |
| 328 bool inline_p = (strcmp (xcoff_current_function_file, filename) != 0 | |
| 329 || (int) line < xcoff_begin_function_line); | |
| 330 | |
| 331 xcoffout_source_file (asm_out_file, filename, inline_p); | |
| 332 | |
| 333 ASM_OUTPUT_LINE (asm_out_file, line); | |
| 334 } | |
| 335 | |
| 336 /* Output the symbols defined in block number DO_BLOCK. | |
| 337 | |
| 338 This function works by walking the tree structure of blocks, | |
| 339 counting blocks until it finds the desired block. */ | |
| 340 | |
| 341 static int do_block = 0; | |
| 342 | |
| 343 static void | |
| 344 xcoffout_block (tree block, int depth, tree args) | |
| 345 { | |
| 346 while (block) | |
| 347 { | |
| 348 /* Ignore blocks never expanded or otherwise marked as real. */ | |
| 349 if (TREE_USED (block)) | |
| 350 { | |
| 351 /* When we reach the specified block, output its symbols. */ | |
| 352 if (BLOCK_NUMBER (block) == do_block) | |
| 353 { | |
| 354 /* Output the syms of the block. */ | |
| 355 if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
| 356 dbxout_syms (BLOCK_VARS (block)); | |
| 357 if (args) | |
| 358 dbxout_reg_parms (args); | |
| 359 | |
| 360 /* We are now done with the block. Don't go to inner blocks. */ | |
| 361 return; | |
| 362 } | |
| 363 /* If we are past the specified block, stop the scan. */ | |
| 364 else if (BLOCK_NUMBER (block) >= do_block) | |
| 365 return; | |
| 366 | |
| 367 /* Output the subblocks. */ | |
| 368 xcoffout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); | |
| 369 } | |
| 370 block = BLOCK_CHAIN (block); | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 /* Describe the beginning of an internal block within a function. | |
| 375 Also output descriptions of variables defined in this block. | |
| 376 | |
| 377 N is the number of the block, by order of beginning, counting from 1, | |
| 378 and not counting the outermost (function top-level) block. | |
| 379 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
| 380 if the count starts at 0 for the outermost one. */ | |
| 381 | |
| 382 void | |
| 383 xcoffout_begin_block (unsigned int line, unsigned int n) | |
| 384 { | |
| 385 tree decl = current_function_decl; | |
| 386 | |
| 387 /* The IBM AIX compiler does not emit a .bb for the function level scope, | |
| 388 so we avoid it here also. */ | |
| 389 if (n != 1) | |
| 390 ASM_OUTPUT_LBB (asm_out_file, line, n); | |
| 391 | |
| 392 do_block = n; | |
| 393 xcoffout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); | |
| 394 } | |
| 395 | |
| 396 /* Describe the end line-number of an internal block within a function. */ | |
| 397 | |
| 398 void | |
| 399 xcoffout_end_block (unsigned int line, unsigned int n) | |
| 400 { | |
| 401 if (n != 1) | |
| 402 ASM_OUTPUT_LBE (asm_out_file, line, n); | |
| 403 } | |
| 404 | |
| 405 /* Called at beginning of function (before prologue). | |
| 406 Declare function as needed for debugging. */ | |
| 407 | |
| 408 void | |
| 409 xcoffout_declare_function (FILE *file, tree decl, const char *name) | |
| 410 { | |
| 411 size_t len; | |
| 412 | |
| 413 if (*name == '*') | |
| 414 name++; | |
| 415 len = strlen (name); | |
| 416 if (name[len - 1] == ']') | |
| 417 { | |
| 418 char *n = XALLOCAVEC (char, len - 3); | |
| 419 memcpy (n, name, len - 4); | |
| 420 n[len - 4] = '\0'; | |
| 421 name = n; | |
| 422 } | |
| 423 | |
| 424 /* Any pending .bi or .ei must occur before the .function pseudo op. | |
| 425 Otherwise debuggers will think that the function is in the previous | |
| 426 file and/or at the wrong line number. */ | |
| 427 xcoffout_source_file (file, DECL_SOURCE_FILE (decl), 0); | |
| 428 dbxout_symbol (decl, 0); | |
| 429 | |
| 430 /* .function NAME, TOP, MAPPING, TYPE, SIZE | |
| 431 16 and 044 are placeholders for backwards compatibility */ | |
| 432 fprintf (file, "\t.function .%s,.%s,16,044,FE..%s-.%s\n", | |
| 433 name, name, name, name); | |
| 434 } | |
| 435 | |
| 436 /* Called at beginning of function body (at start of prologue). | |
| 437 Record the function's starting line number, so we can output | |
| 438 relative line numbers for the other lines. | |
| 439 Record the file name that this function is contained in. */ | |
| 440 | |
| 441 void | |
| 442 xcoffout_begin_prologue (unsigned int line, | |
| 443 const char *file ATTRIBUTE_UNUSED) | |
| 444 { | |
| 445 ASM_OUTPUT_LFB (asm_out_file, line); | |
| 446 dbxout_parms (DECL_ARGUMENTS (current_function_decl)); | |
| 447 | |
| 448 /* Emit the symbols for the outermost BLOCK's variables. sdbout.c does this | |
| 449 in sdbout_begin_block, but there is no guarantee that there will be any | |
| 450 inner block 1, so we must do it here. This gives a result similar to | |
| 451 dbxout, so it does make some sense. */ | |
| 452 do_block = BLOCK_NUMBER (DECL_INITIAL (current_function_decl)); | |
| 453 xcoffout_block (DECL_INITIAL (current_function_decl), 0, | |
| 454 DECL_ARGUMENTS (current_function_decl)); | |
| 455 | |
| 456 ASM_OUTPUT_LINE (asm_out_file, line); | |
| 457 } | |
| 458 | |
| 459 /* Called at end of function (before epilogue). | |
| 460 Describe end of outermost block. */ | |
| 461 | |
| 462 void | |
| 463 xcoffout_end_function (unsigned int last_linenum) | |
| 464 { | |
| 465 ASM_OUTPUT_LFE (asm_out_file, last_linenum); | |
| 466 } | |
| 467 | |
| 468 /* Output xcoff info for the absolute end of a function. | |
| 469 Called after the epilogue is output. */ | |
| 470 | |
| 471 void | |
| 472 xcoffout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, | |
| 473 const char *file ATTRIBUTE_UNUSED) | |
| 474 { | |
| 475 /* We need to pass the correct function size to .function, otherwise, | |
| 476 the xas assembler can't figure out the correct size for the function | |
| 477 aux entry. So, we emit a label after the last instruction which can | |
| 478 be used by the .function pseudo op to calculate the function size. */ | |
| 479 | |
| 480 const char *fname = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); | |
| 481 if (*fname == '*') | |
| 482 ++fname; | |
| 483 fprintf (asm_out_file, "FE.."); | |
| 484 ASM_OUTPUT_LABEL (asm_out_file, fname); | |
| 485 } | |
| 486 #endif /* XCOFF_DEBUGGING_INFO */ |