Mercurial > hg > CbC > CbC_gcc
annotate gcc/xcoffout.c @ 56:3c8a44c06a95
Added tag gcc-4.4.5 for changeset 77e2b8dfacca
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
---|---|
date | Fri, 12 Feb 2010 23:41:23 +0900 |
parents | 77e2b8dfacca |
children | f6334be47118 |
rev | line source |
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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 */ |