Mercurial > hg > CbC > CbC_gcc
annotate gcc/xcoffout.c @ 129:002ebcbc1eb4
remove test_env
| author | mir3636 |
|---|---|
| date | Tue, 15 May 2018 18:45:25 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| 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, | |
|
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parents:
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changeset
|
3 2007, 2008, 2010 Free Software Foundation, Inc. |
| 0 | 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" | |
|
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f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
|
33 #include "diagnostic-core.h" |
| 0 | 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 { \ | |
|
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parents:
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changeset
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84 /* Make sure we're in a function and prevent output of .line 0, as \ |
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f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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85 line # 0 is meant for symbol addresses in xcoff. Additionally, \ |
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f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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86 line numbers are 'unsigned short' in 32-bit mode. */ \ |
| 0 | 87 if (xcoff_begin_function_line >= 0) \ |
|
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88 { \ |
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89 int lno = ABS_OR_RELATIVE_LINENO (LINENUM); \ |
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f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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90 if (lno > 0 && (TARGET_64BIT || lno <= (int)USHRT_MAX)) \ |
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f6334be47118
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parents:
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91 fprintf (FILE, "\t.line\t%d\n", lno); \ |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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92 } \ |
| 0 | 93 } \ |
| 94 while (0) | |
| 95 | |
| 96 #define ASM_OUTPUT_LFB(FILE,LINENUM) \ | |
| 97 { \ | |
| 98 if (xcoff_begin_function_line == -1) \ | |
| 99 { \ | |
| 100 xcoff_begin_function_line = (LINENUM) - 1;\ | |
| 101 fprintf (FILE, "\t.bf\t%d\n", (LINENUM)); \ | |
| 102 } \ | |
| 103 xcoff_current_function_file \ | |
| 104 = (xcoff_current_include_file \ | |
| 105 ? xcoff_current_include_file : main_input_filename); \ | |
| 106 } | |
| 107 | |
| 108 #define ASM_OUTPUT_LFE(FILE,LINENUM) \ | |
| 109 do \ | |
| 110 { \ | |
| 111 fprintf (FILE, "\t.ef\t%d\n", (LINENUM)); \ | |
| 112 xcoff_begin_function_line = -1; \ | |
| 113 } \ | |
| 114 while (0) | |
| 115 | |
| 116 #define ASM_OUTPUT_LBB(FILE,LINENUM,BLOCKNUM) \ | |
| 117 fprintf (FILE, "\t.bb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) | |
| 118 | |
| 119 #define ASM_OUTPUT_LBE(FILE,LINENUM,BLOCKNUM) \ | |
| 120 fprintf (FILE, "\t.eb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) | |
| 121 | |
| 122 static void xcoffout_block (tree, int, tree); | |
| 123 static void xcoffout_source_file (FILE *, const char *, int); | |
| 124 | |
| 125 /* Support routines for XCOFF debugging info. */ | |
| 126 | |
| 127 struct xcoff_type_number | |
| 128 { | |
| 129 const char *name; | |
| 130 int number; | |
| 131 }; | |
| 132 static const struct xcoff_type_number xcoff_type_numbers[] = { | |
| 133 { "int", -1 }, | |
| 134 { "char", -2 }, | |
| 135 { "short int", -3 }, | |
| 136 { "long int", -4 }, /* fiddled to -31 if 64 bits */ | |
| 137 { "unsigned char", -5 }, | |
| 138 { "signed char", -6 }, | |
| 139 { "short unsigned int", -7 }, | |
| 140 { "unsigned int", -8 }, | |
| 141 /* No such type "unsigned". */ | |
| 142 { "long unsigned int", -10 }, /* fiddled to -32 if 64 bits */ | |
| 143 { "void", -11 }, | |
| 144 { "float", -12 }, | |
| 145 { "double", -13 }, | |
| 146 { "long double", -14 }, | |
| 147 /* Pascal and Fortran types run from -15 to -29. */ | |
| 148 { "wchar", -30 }, /* XXX Should be "wchar_t" ? */ | |
| 149 { "long long int", -31 }, | |
| 150 { "long long unsigned int", -32 }, | |
| 151 /* Additional Fortran types run from -33 to -37. */ | |
| 152 | |
| 153 /* ??? Should also handle built-in C++ and Obj-C types. There perhaps | |
| 154 aren't any that C doesn't already have. */ | |
|
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155 }; |
| 0 | 156 |
| 157 /* Returns an XCOFF fundamental type number for DECL (assumed to be a | |
| 158 TYPE_DECL), or 0 if dbxout.c should assign a type number normally. */ | |
| 159 int | |
| 160 xcoff_assign_fundamental_type_number (tree decl) | |
| 161 { | |
| 162 const char *name; | |
| 163 size_t i; | |
| 164 | |
| 165 /* Do not waste time searching the list for non-intrinsic types. */ | |
| 166 if (DECL_NAME (decl) == 0 || ! DECL_IS_BUILTIN (decl)) | |
| 167 return 0; | |
| 168 | |
| 169 name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
| 170 | |
| 171 /* Linear search, blech, but the list is too small to bother | |
| 172 doing anything else. */ | |
| 173 for (i = 0; i < ARRAY_SIZE (xcoff_type_numbers); i++) | |
| 174 if (!strcmp (xcoff_type_numbers[i].name, name)) | |
| 175 goto found; | |
| 176 return 0; | |
| 177 | |
| 178 found: | |
| 179 /* -4 and -10 should be replaced with -31 and -32, respectively, | |
| 180 when used for a 64-bit type. */ | |
| 181 if (int_size_in_bytes (TREE_TYPE (decl)) == 8) | |
| 182 { | |
| 183 if (xcoff_type_numbers[i].number == -4) | |
| 184 return -31; | |
| 185 if (xcoff_type_numbers[i].number == -10) | |
| 186 return -32; | |
| 187 } | |
| 188 return xcoff_type_numbers[i].number; | |
| 189 } | |
| 190 | |
| 191 /* Print an error message for unrecognized stab codes. */ | |
| 192 | |
| 193 #define UNKNOWN_STAB(STR) \ | |
| 194 internal_error ("no sclass for %s stab (0x%x)", STR, stab) | |
| 195 | |
| 196 /* Conversion routine from BSD stabs to AIX storage classes. */ | |
| 197 | |
| 198 int | |
| 199 stab_to_sclass (int stab) | |
| 200 { | |
| 201 switch (stab) | |
| 202 { | |
| 203 case N_GSYM: | |
| 204 return C_GSYM; | |
| 205 | |
| 206 case N_FNAME: | |
| 207 UNKNOWN_STAB ("N_FNAME"); | |
| 208 | |
| 209 case N_FUN: | |
| 210 return C_FUN; | |
| 211 | |
| 212 case N_STSYM: | |
| 213 case N_LCSYM: | |
| 214 return C_STSYM; | |
| 215 | |
| 216 case N_MAIN: | |
| 217 UNKNOWN_STAB ("N_MAIN"); | |
| 218 | |
| 219 case N_RSYM: | |
| 220 return C_RSYM; | |
| 221 | |
| 222 case N_SSYM: | |
| 223 UNKNOWN_STAB ("N_SSYM"); | |
| 224 | |
| 225 case N_RPSYM: | |
| 226 return C_RPSYM; | |
| 227 | |
| 228 case N_PSYM: | |
| 229 return C_PSYM; | |
| 230 case N_LSYM: | |
| 231 return C_LSYM; | |
| 232 case N_DECL: | |
| 233 return C_DECL; | |
| 234 case N_ENTRY: | |
| 235 return C_ENTRY; | |
| 236 | |
| 237 case N_SO: | |
| 238 UNKNOWN_STAB ("N_SO"); | |
| 239 | |
| 240 case N_SOL: | |
| 241 UNKNOWN_STAB ("N_SOL"); | |
| 242 | |
| 243 case N_SLINE: | |
| 244 UNKNOWN_STAB ("N_SLINE"); | |
| 245 | |
| 246 case N_DSLINE: | |
| 247 UNKNOWN_STAB ("N_DSLINE"); | |
| 248 | |
| 249 case N_BSLINE: | |
| 250 UNKNOWN_STAB ("N_BSLINE"); | |
| 251 | |
| 252 case N_BINCL: | |
| 253 UNKNOWN_STAB ("N_BINCL"); | |
| 254 | |
| 255 case N_EINCL: | |
| 256 UNKNOWN_STAB ("N_EINCL"); | |
| 257 | |
| 258 case N_EXCL: | |
| 259 UNKNOWN_STAB ("N_EXCL"); | |
| 260 | |
| 261 case N_LBRAC: | |
| 262 UNKNOWN_STAB ("N_LBRAC"); | |
| 263 | |
| 264 case N_RBRAC: | |
| 265 UNKNOWN_STAB ("N_RBRAC"); | |
| 266 | |
| 267 case N_BCOMM: | |
| 268 return C_BCOMM; | |
| 269 case N_ECOMM: | |
| 270 return C_ECOMM; | |
| 271 case N_ECOML: | |
| 272 return C_ECOML; | |
| 273 | |
| 274 case N_LENG: | |
| 275 UNKNOWN_STAB ("N_LENG"); | |
| 276 | |
| 277 case N_PC: | |
| 278 UNKNOWN_STAB ("N_PC"); | |
| 279 | |
| 280 case N_M2C: | |
| 281 UNKNOWN_STAB ("N_M2C"); | |
| 282 | |
| 283 case N_SCOPE: | |
| 284 UNKNOWN_STAB ("N_SCOPE"); | |
| 285 | |
| 286 case N_CATCH: | |
| 287 UNKNOWN_STAB ("N_CATCH"); | |
| 288 | |
| 289 case N_OPT: | |
| 290 UNKNOWN_STAB ("N_OPT"); | |
| 291 | |
| 292 default: | |
| 293 UNKNOWN_STAB ("?"); | |
| 294 } | |
| 295 } | |
| 296 | |
| 297 /* Output debugging info to FILE to switch to sourcefile FILENAME. | |
| 298 INLINE_P is true if this is from an inlined function. */ | |
| 299 | |
| 300 static void | |
| 301 xcoffout_source_file (FILE *file, const char *filename, int inline_p) | |
| 302 { | |
| 303 if (filename | |
| 304 && (xcoff_lastfile == 0 || strcmp (filename, xcoff_lastfile) | |
| 305 || (inline_p && ! xcoff_inlining) | |
| 306 || (! inline_p && xcoff_inlining))) | |
| 307 { | |
| 308 if (xcoff_current_include_file) | |
| 309 { | |
| 310 fprintf (file, "\t.ei\t"); | |
| 311 output_quoted_string (file, | |
| 312 remap_debug_filename (xcoff_current_include_file)); | |
| 313 fprintf (file, "\n"); | |
| 314 xcoff_current_include_file = NULL; | |
| 315 } | |
| 316 xcoff_inlining = inline_p; | |
| 317 if (strcmp (main_input_filename, filename) || inline_p) | |
| 318 { | |
| 319 fprintf (file, "\t.bi\t"); | |
| 320 output_quoted_string (file, remap_debug_filename (filename)); | |
| 321 fprintf (file, "\n"); | |
| 322 xcoff_current_include_file = filename; | |
| 323 } | |
| 324 xcoff_lastfile = filename; | |
| 325 } | |
| 326 } | |
| 327 | |
| 328 /* Output a line number symbol entry for location (FILENAME, LINE). */ | |
| 329 | |
| 330 void | |
|
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331 xcoffout_source_line (unsigned int line, const char *filename, |
|
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332 int discriminator ATTRIBUTE_UNUSED, |
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333 bool is_stmt ATTRIBUTE_UNUSED) |
| 0 | 334 { |
| 335 bool inline_p = (strcmp (xcoff_current_function_file, filename) != 0 | |
| 336 || (int) line < xcoff_begin_function_line); | |
| 337 | |
| 338 xcoffout_source_file (asm_out_file, filename, inline_p); | |
| 339 | |
| 340 ASM_OUTPUT_LINE (asm_out_file, line); | |
| 341 } | |
| 342 | |
| 343 /* Output the symbols defined in block number DO_BLOCK. | |
| 344 | |
| 345 This function works by walking the tree structure of blocks, | |
| 346 counting blocks until it finds the desired block. */ | |
| 347 | |
| 348 static int do_block = 0; | |
| 349 | |
| 350 static void | |
| 351 xcoffout_block (tree block, int depth, tree args) | |
| 352 { | |
| 353 while (block) | |
| 354 { | |
| 355 /* Ignore blocks never expanded or otherwise marked as real. */ | |
| 356 if (TREE_USED (block)) | |
| 357 { | |
| 358 /* When we reach the specified block, output its symbols. */ | |
| 359 if (BLOCK_NUMBER (block) == do_block) | |
| 360 { | |
| 361 /* Output the syms of the block. */ | |
| 362 if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
| 363 dbxout_syms (BLOCK_VARS (block)); | |
| 364 if (args) | |
| 365 dbxout_reg_parms (args); | |
| 366 | |
| 367 /* We are now done with the block. Don't go to inner blocks. */ | |
| 368 return; | |
| 369 } | |
| 370 /* If we are past the specified block, stop the scan. */ | |
| 371 else if (BLOCK_NUMBER (block) >= do_block) | |
| 372 return; | |
| 373 | |
| 374 /* Output the subblocks. */ | |
| 375 xcoffout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); | |
| 376 } | |
| 377 block = BLOCK_CHAIN (block); | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 /* Describe the beginning of an internal block within a function. | |
| 382 Also output descriptions of variables defined in this block. | |
| 383 | |
| 384 N is the number of the block, by order of beginning, counting from 1, | |
| 385 and not counting the outermost (function top-level) block. | |
| 386 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
| 387 if the count starts at 0 for the outermost one. */ | |
| 388 | |
| 389 void | |
| 390 xcoffout_begin_block (unsigned int line, unsigned int n) | |
| 391 { | |
| 392 tree decl = current_function_decl; | |
| 393 | |
| 394 /* The IBM AIX compiler does not emit a .bb for the function level scope, | |
| 395 so we avoid it here also. */ | |
| 396 if (n != 1) | |
| 397 ASM_OUTPUT_LBB (asm_out_file, line, n); | |
| 398 | |
| 399 do_block = n; | |
| 400 xcoffout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); | |
| 401 } | |
| 402 | |
| 403 /* Describe the end line-number of an internal block within a function. */ | |
| 404 | |
| 405 void | |
| 406 xcoffout_end_block (unsigned int line, unsigned int n) | |
| 407 { | |
| 408 if (n != 1) | |
| 409 ASM_OUTPUT_LBE (asm_out_file, line, n); | |
| 410 } | |
| 411 | |
| 412 /* Called at beginning of function (before prologue). | |
| 413 Declare function as needed for debugging. */ | |
| 414 | |
| 415 void | |
| 416 xcoffout_declare_function (FILE *file, tree decl, const char *name) | |
| 417 { | |
| 418 size_t len; | |
| 419 | |
| 420 if (*name == '*') | |
| 421 name++; | |
| 422 len = strlen (name); | |
| 423 if (name[len - 1] == ']') | |
| 424 { | |
| 425 char *n = XALLOCAVEC (char, len - 3); | |
| 426 memcpy (n, name, len - 4); | |
| 427 n[len - 4] = '\0'; | |
| 428 name = n; | |
| 429 } | |
| 430 | |
| 431 /* Any pending .bi or .ei must occur before the .function pseudo op. | |
| 432 Otherwise debuggers will think that the function is in the previous | |
| 433 file and/or at the wrong line number. */ | |
| 434 xcoffout_source_file (file, DECL_SOURCE_FILE (decl), 0); | |
| 435 dbxout_symbol (decl, 0); | |
| 436 | |
| 437 /* .function NAME, TOP, MAPPING, TYPE, SIZE | |
| 438 16 and 044 are placeholders for backwards compatibility */ | |
| 439 fprintf (file, "\t.function .%s,.%s,16,044,FE..%s-.%s\n", | |
| 440 name, name, name, name); | |
| 441 } | |
| 442 | |
| 443 /* Called at beginning of function body (at start of prologue). | |
| 444 Record the function's starting line number, so we can output | |
| 445 relative line numbers for the other lines. | |
| 446 Record the file name that this function is contained in. */ | |
| 447 | |
| 448 void | |
| 449 xcoffout_begin_prologue (unsigned int line, | |
| 450 const char *file ATTRIBUTE_UNUSED) | |
| 451 { | |
| 452 ASM_OUTPUT_LFB (asm_out_file, line); | |
| 453 dbxout_parms (DECL_ARGUMENTS (current_function_decl)); | |
| 454 | |
| 455 /* Emit the symbols for the outermost BLOCK's variables. sdbout.c does this | |
| 456 in sdbout_begin_block, but there is no guarantee that there will be any | |
| 457 inner block 1, so we must do it here. This gives a result similar to | |
| 458 dbxout, so it does make some sense. */ | |
| 459 do_block = BLOCK_NUMBER (DECL_INITIAL (current_function_decl)); | |
| 460 xcoffout_block (DECL_INITIAL (current_function_decl), 0, | |
| 461 DECL_ARGUMENTS (current_function_decl)); | |
| 462 | |
| 463 ASM_OUTPUT_LINE (asm_out_file, line); | |
| 464 } | |
| 465 | |
| 466 /* Called at end of function (before epilogue). | |
| 467 Describe end of outermost block. */ | |
| 468 | |
| 469 void | |
| 470 xcoffout_end_function (unsigned int last_linenum) | |
| 471 { | |
| 472 ASM_OUTPUT_LFE (asm_out_file, last_linenum); | |
| 473 } | |
| 474 | |
| 475 /* Output xcoff info for the absolute end of a function. | |
| 476 Called after the epilogue is output. */ | |
| 477 | |
| 478 void | |
| 479 xcoffout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, | |
| 480 const char *file ATTRIBUTE_UNUSED) | |
| 481 { | |
| 482 /* We need to pass the correct function size to .function, otherwise, | |
| 483 the xas assembler can't figure out the correct size for the function | |
| 484 aux entry. So, we emit a label after the last instruction which can | |
| 485 be used by the .function pseudo op to calculate the function size. */ | |
| 486 | |
| 487 const char *fname = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); | |
| 488 if (*fname == '*') | |
| 489 ++fname; | |
| 490 fprintf (asm_out_file, "FE.."); | |
| 491 ASM_OUTPUT_LABEL (asm_out_file, fname); | |
| 492 } | |
| 493 #endif /* XCOFF_DEBUGGING_INFO */ |