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Commit | Line | Data |
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265cc84a | 1 | /* Output xcoff-format symbol table information from GNU compiler. |
aa335b76 | 2 | Copyright (C) 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, 2004 |
abf9af02 | 3 | Free Software Foundation, Inc. |
265cc84a | 4 | |
1322177d | 5 | This file is part of GCC. |
265cc84a | 6 | |
1322177d LB |
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 2, or (at your option) any later | |
10 | version. | |
265cc84a | 11 | |
1322177d LB |
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. | |
265cc84a MM |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
265cc84a | 21 | |
265cc84a MM |
22 | /* Output xcoff-format symbol table data. The main functionality is contained |
23 | in dbxout.c. This file implements the sdbout-like parts of the xcoff | |
24 | interface. Many functions are very similar to their counterparts in | |
25 | sdbout.c. */ | |
26 | ||
265cc84a | 27 | #include "config.h" |
670ee920 | 28 | #include "system.h" |
4977bab6 ZW |
29 | #include "coretypes.h" |
30 | #include "tm.h" | |
265cc84a MM |
31 | #include "tree.h" |
32 | #include "rtl.h" | |
33 | #include "flags.h" | |
296b8152 KG |
34 | #include "toplev.h" |
35 | #include "output.h" | |
951a525f | 36 | #include "ggc.h" |
772c5265 | 37 | #include "target.h" |
265cc84a MM |
38 | |
39 | #ifdef XCOFF_DEBUGGING_INFO | |
40 | ||
41 | /* This defines the C_* storage classes. */ | |
1d3f6c9f | 42 | #include "xcoff.h" |
f246a305 | 43 | #include "xcoffout.h" |
296b8152 | 44 | #include "dbxout.h" |
265cc84a | 45 | #include "gstab.h" |
265cc84a | 46 | |
265cc84a MM |
47 | /* Line number of beginning of current function, minus one. |
48 | Negative means not in a function or not using xcoff. */ | |
49 | ||
d12de8ce RK |
50 | static int xcoff_begin_function_line = -1; |
51 | static int xcoff_inlining = 0; | |
265cc84a MM |
52 | |
53 | /* Name of the current include file. */ | |
54 | ||
53cd5d6c | 55 | const char *xcoff_current_include_file; |
265cc84a MM |
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 | ||
53cd5d6c | 62 | static const char *xcoff_current_function_file; |
265cc84a MM |
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; | |
3fe49c00 JW |
70 | |
71 | /* Last source file name mentioned in a NOTE insn. */ | |
72 | ||
53cd5d6c | 73 | const char *xcoff_lastfile; |
265cc84a MM |
74 | \f |
75 | /* Macro definitions used below. */ | |
265cc84a | 76 | |
3fe49c00 | 77 | #define ABS_OR_RELATIVE_LINENO(LINENO) \ |
e02791a6 | 78 | ((xcoff_inlining) ? (LINENO) : (LINENO) - xcoff_begin_function_line) |
3fe49c00 JW |
79 | |
80 | /* Output source line numbers via ".line" rather than ".stabd". */ | |
a8d0467e | 81 | #define ASM_OUTPUT_SOURCE_LINE(FILE,LINENUM,COUNTER) \ |
c203e7fe KH |
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) | |
3fe49c00 | 88 | |
265cc84a MM |
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 | ||
2e1eedd6 | 101 | #define ASM_OUTPUT_LFE(FILE,LINENUM) \ |
c203e7fe KH |
102 | do \ |
103 | { \ | |
104 | fprintf (FILE, "\t.ef\t%d\n", (LINENUM)); \ | |
105 | xcoff_begin_function_line = -1; \ | |
106 | } \ | |
107 | while (0) | |
265cc84a MM |
108 | |
109 | #define ASM_OUTPUT_LBB(FILE,LINENUM,BLOCKNUM) \ | |
5c43aed8 | 110 | fprintf (FILE, "\t.bb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) |
265cc84a MM |
111 | |
112 | #define ASM_OUTPUT_LBE(FILE,LINENUM,BLOCKNUM) \ | |
5c43aed8 | 113 | fprintf (FILE, "\t.eb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) |
670ee920 | 114 | |
2e1eedd6 AJ |
115 | static void xcoffout_block (tree, int, tree); |
116 | static void xcoffout_source_file (FILE *, const char *, int); | |
265cc84a MM |
117 | \f |
118 | /* Support routines for XCOFF debugging info. */ | |
119 | ||
21d13d83 | 120 | struct xcoff_type_number |
265cc84a | 121 | { |
21d13d83 ZW |
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 }, | |
265cc84a | 134 | /* No such type "unsigned". */ |
21d13d83 ZW |
135 | { "long unsigned int", -10 }, /* fiddled to -32 if 64 bits */ |
136 | { "void", -11 }, | |
137 | { "float", -12 }, | |
138 | { "double", -13 }, | |
139 | { "long double", -14 }, | |
265cc84a | 140 | /* Pascal and Fortran types run from -15 to -29. */ |
21d13d83 ZW |
141 | { "wchar", -30 }, /* XXX Should be "wchar_t" ? */ |
142 | { "long long int", -31 }, | |
143 | { "long long unsigned int", -32 }, | |
0be37202 | 144 | /* Additional Fortran types run from -33 to -37. */ |
265cc84a MM |
145 | |
146 | /* ??? Should also handle built-in C++ and Obj-C types. There perhaps | |
147 | aren't any that C doesn't already have. */ | |
21d13d83 ZW |
148 | }; |
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 | { | |
f433554b | 155 | const char *name; |
21d13d83 ZW |
156 | size_t i; |
157 | ||
158 | /* Do not waste time searching the list for non-intrinsic types. */ | |
f433554b | 159 | if (DECL_NAME (decl) == 0 || DECL_SOURCE_LINE (decl) > 0) |
21d13d83 ZW |
160 | return 0; |
161 | ||
f433554b ZW |
162 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); |
163 | ||
21d13d83 ZW |
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; | |
265cc84a MM |
182 | } |
183 | ||
184 | /* Print an error message for unrecognized stab codes. */ | |
185 | ||
186 | #define UNKNOWN_STAB(STR) \ | |
1f978f5f | 187 | internal_error ("no sclass for %s stab (0x%x)\n", STR, stab) |
265cc84a MM |
188 | |
189 | /* Conversion routine from BSD stabs to AIX storage classes. */ | |
190 | ||
191 | int | |
2e1eedd6 | 192 | stab_to_sclass (int stab) |
265cc84a MM |
193 | { |
194 | switch (stab) | |
195 | { | |
196 | case N_GSYM: | |
197 | return C_GSYM; | |
198 | ||
199 | case N_FNAME: | |
abf9af02 | 200 | UNKNOWN_STAB ("N_FNAME"); |
265cc84a MM |
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: | |
abf9af02 | 210 | UNKNOWN_STAB ("N_MAIN"); |
265cc84a MM |
211 | |
212 | case N_RSYM: | |
213 | return C_RSYM; | |
214 | ||
215 | case N_SSYM: | |
abf9af02 | 216 | UNKNOWN_STAB ("N_SSYM"); |
265cc84a MM |
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: | |
abf9af02 | 231 | UNKNOWN_STAB ("N_SO"); |
265cc84a MM |
232 | |
233 | case N_SOL: | |
abf9af02 | 234 | UNKNOWN_STAB ("N_SOL"); |
265cc84a MM |
235 | |
236 | case N_SLINE: | |
abf9af02 | 237 | UNKNOWN_STAB ("N_SLINE"); |
265cc84a MM |
238 | |
239 | case N_DSLINE: | |
abf9af02 | 240 | UNKNOWN_STAB ("N_DSLINE"); |
265cc84a MM |
241 | |
242 | case N_BSLINE: | |
abf9af02 | 243 | UNKNOWN_STAB ("N_BSLINE"); |
265cc84a MM |
244 | |
245 | case N_BINCL: | |
abf9af02 | 246 | UNKNOWN_STAB ("N_BINCL"); |
265cc84a MM |
247 | |
248 | case N_EINCL: | |
abf9af02 | 249 | UNKNOWN_STAB ("N_EINCL"); |
265cc84a MM |
250 | |
251 | case N_EXCL: | |
abf9af02 | 252 | UNKNOWN_STAB ("N_EXCL"); |
265cc84a MM |
253 | |
254 | case N_LBRAC: | |
abf9af02 | 255 | UNKNOWN_STAB ("N_LBRAC"); |
265cc84a MM |
256 | |
257 | case N_RBRAC: | |
abf9af02 | 258 | UNKNOWN_STAB ("N_RBRAC"); |
265cc84a MM |
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: | |
abf9af02 | 268 | UNKNOWN_STAB ("N_LENG"); |
265cc84a MM |
269 | |
270 | case N_PC: | |
abf9af02 | 271 | UNKNOWN_STAB ("N_PC"); |
265cc84a MM |
272 | |
273 | case N_M2C: | |
abf9af02 | 274 | UNKNOWN_STAB ("N_M2C"); |
265cc84a MM |
275 | |
276 | case N_SCOPE: | |
abf9af02 | 277 | UNKNOWN_STAB ("N_SCOPE"); |
265cc84a MM |
278 | |
279 | case N_CATCH: | |
abf9af02 | 280 | UNKNOWN_STAB ("N_CATCH"); |
ad087b92 | 281 | |
ad087b92 ZW |
282 | case N_OPT: |
283 | UNKNOWN_STAB ("N_OPT"); | |
265cc84a MM |
284 | |
285 | default: | |
ad087b92 | 286 | UNKNOWN_STAB ("?"); |
abf9af02 | 287 | } |
265cc84a | 288 | } |
3fe49c00 | 289 | \f |
3fe49c00 JW |
290 | /* Output debugging info to FILE to switch to sourcefile FILENAME. |
291 | INLINE_P is true if this is from an inlined function. */ | |
292 | ||
0a336522 | 293 | static void |
2e1eedd6 | 294 | xcoffout_source_file (FILE *file, const char *filename, int inline_p) |
3fe49c00 JW |
295 | { |
296 | if (filename | |
297 | && (xcoff_lastfile == 0 || strcmp (filename, xcoff_lastfile) | |
e02791a6 RK |
298 | || (inline_p && ! xcoff_inlining) |
299 | || (! inline_p && xcoff_inlining))) | |
3fe49c00 JW |
300 | { |
301 | if (xcoff_current_include_file) | |
302 | { | |
303 | fprintf (file, "\t.ei\t"); | |
304 | output_quoted_string (file, xcoff_current_include_file); | |
305 | fprintf (file, "\n"); | |
306 | xcoff_current_include_file = NULL; | |
307 | } | |
abf9af02 | 308 | xcoff_inlining = inline_p; |
3fe49c00 JW |
309 | if (strcmp (main_input_filename, filename) || inline_p) |
310 | { | |
311 | fprintf (file, "\t.bi\t"); | |
312 | output_quoted_string (file, filename); | |
313 | fprintf (file, "\n"); | |
314 | xcoff_current_include_file = filename; | |
315 | } | |
3fe49c00 JW |
316 | xcoff_lastfile = filename; |
317 | } | |
318 | } | |
319 | ||
653e276c | 320 | /* Output a line number symbol entry for location (FILENAME, LINE). */ |
3fe49c00 JW |
321 | |
322 | void | |
2e1eedd6 | 323 | xcoffout_source_line (unsigned int line, const char *filename) |
3fe49c00 | 324 | { |
653e276c NB |
325 | bool inline_p = (strcmp (xcoff_current_function_file, filename) != 0 |
326 | || (int) line < xcoff_begin_function_line); | |
327 | ||
328 | xcoffout_source_file (asm_out_file, filename, inline_p); | |
3fe49c00 | 329 | |
a8d0467e | 330 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line, 0); |
3fe49c00 JW |
331 | } |
332 | \f | |
265cc84a | 333 | /* Output the symbols defined in block number DO_BLOCK. |
265cc84a MM |
334 | |
335 | This function works by walking the tree structure of blocks, | |
336 | counting blocks until it finds the desired block. */ | |
337 | ||
338 | static int do_block = 0; | |
339 | ||
265cc84a | 340 | static void |
2e1eedd6 | 341 | xcoffout_block (tree block, int depth, tree args) |
265cc84a MM |
342 | { |
343 | while (block) | |
344 | { | |
345 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
346 | if (TREE_USED (block)) | |
347 | { | |
348 | /* When we reach the specified block, output its symbols. */ | |
18c038b9 | 349 | if (BLOCK_NUMBER (block) == do_block) |
265cc84a MM |
350 | { |
351 | /* Output the syms of the block. */ | |
352 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
353 | dbxout_syms (BLOCK_VARS (block)); | |
354 | if (args) | |
355 | dbxout_reg_parms (args); | |
356 | ||
357 | /* We are now done with the block. Don't go to inner blocks. */ | |
358 | return; | |
359 | } | |
360 | /* If we are past the specified block, stop the scan. */ | |
18c038b9 | 361 | else if (BLOCK_NUMBER (block) >= do_block) |
265cc84a MM |
362 | return; |
363 | ||
265cc84a | 364 | /* Output the subblocks. */ |
c166a311 | 365 | xcoffout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
265cc84a MM |
366 | } |
367 | block = BLOCK_CHAIN (block); | |
368 | } | |
369 | } | |
370 | ||
371 | /* Describe the beginning of an internal block within a function. | |
372 | Also output descriptions of variables defined in this block. | |
373 | ||
374 | N is the number of the block, by order of beginning, counting from 1, | |
375 | and not counting the outermost (function top-level) block. | |
376 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
377 | if the count starts at 0 for the outermost one. */ | |
378 | ||
379 | void | |
2e1eedd6 | 380 | xcoffout_begin_block (unsigned int line, unsigned int n) |
265cc84a MM |
381 | { |
382 | tree decl = current_function_decl; | |
383 | ||
ced21a32 JW |
384 | /* The IBM AIX compiler does not emit a .bb for the function level scope, |
385 | so we avoid it here also. */ | |
386 | if (n != 1) | |
e2a12aca | 387 | ASM_OUTPUT_LBB (asm_out_file, line, n); |
265cc84a MM |
388 | |
389 | do_block = n; | |
265cc84a MM |
390 | xcoffout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); |
391 | } | |
392 | ||
393 | /* Describe the end line-number of an internal block within a function. */ | |
394 | ||
395 | void | |
2e1eedd6 | 396 | xcoffout_end_block (unsigned int line, unsigned int n) |
265cc84a | 397 | { |
ced21a32 | 398 | if (n != 1) |
e2a12aca | 399 | ASM_OUTPUT_LBE (asm_out_file, line, n); |
265cc84a MM |
400 | } |
401 | ||
c2a47e48 RK |
402 | /* Called at beginning of function (before prologue). |
403 | Declare function as needed for debugging. */ | |
404 | ||
405 | void | |
2e1eedd6 | 406 | xcoffout_declare_function (FILE *file, tree decl, const char *name) |
c2a47e48 | 407 | { |
c2a47e48 RK |
408 | int i; |
409 | ||
0a336522 KG |
410 | if (*name == '*') |
411 | name++; | |
4255aa9b RK |
412 | else |
413 | for (i = 0; name[i]; ++i) | |
414 | { | |
415 | if (name[i] == '[') | |
416 | { | |
703ad42b | 417 | char *n = alloca (i + 1); |
4255aa9b RK |
418 | strncpy (n, name, i); |
419 | n[i] = '\0'; | |
0a336522 | 420 | name = n; |
4255aa9b RK |
421 | break; |
422 | } | |
423 | } | |
c2a47e48 | 424 | |
9faa82d8 | 425 | /* Any pending .bi or .ei must occur before the .function pseudo op. |
ad3b4030 JW |
426 | Otherwise debuggers will think that the function is in the previous |
427 | file and/or at the wrong line number. */ | |
f31686a3 | 428 | xcoffout_source_file (file, DECL_SOURCE_FILE (decl), 0); |
c2a47e48 | 429 | dbxout_symbol (decl, 0); |
c81fc13e DE |
430 | |
431 | /* .function NAME, TOP, MAPPING, TYPE, SIZE | |
432 | 16 and 044 are placeholders for backwards compatibility */ | |
0a336522 KG |
433 | fprintf (file, "\t.function .%s,.%s,16,044,FE..%s-.%s\n", |
434 | name, name, name, name); | |
c2a47e48 RK |
435 | } |
436 | ||
653e276c | 437 | /* Called at beginning of function body (at start of prologue). |
265cc84a MM |
438 | Record the function's starting line number, so we can output |
439 | relative line numbers for the other lines. | |
440 | Record the file name that this function is contained in. */ | |
441 | ||
442 | void | |
2e1eedd6 AJ |
443 | xcoffout_begin_prologue (unsigned int line, |
444 | const char *file ATTRIBUTE_UNUSED) | |
265cc84a | 445 | { |
653e276c | 446 | ASM_OUTPUT_LFB (asm_out_file, line); |
aa630177 | 447 | dbxout_parms (DECL_ARGUMENTS (current_function_decl)); |
00a2e46c JW |
448 | |
449 | /* Emit the symbols for the outermost BLOCK's variables. sdbout.c does this | |
450 | in sdbout_begin_block, but there is no guarantee that there will be any | |
451 | inner block 1, so we must do it here. This gives a result similar to | |
452 | dbxout, so it does make some sense. */ | |
26a13c2b | 453 | do_block = BLOCK_NUMBER (DECL_INITIAL (current_function_decl)); |
00a2e46c JW |
454 | xcoffout_block (DECL_INITIAL (current_function_decl), 0, |
455 | DECL_ARGUMENTS (current_function_decl)); | |
456 | ||
a8d0467e | 457 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line, 0); |
265cc84a MM |
458 | } |
459 | ||
460 | /* Called at end of function (before epilogue). | |
461 | Describe end of outermost block. */ | |
462 | ||
463 | void | |
2e1eedd6 | 464 | xcoffout_end_function (unsigned int last_linenum) |
265cc84a | 465 | { |
e2a12aca | 466 | ASM_OUTPUT_LFE (asm_out_file, last_linenum); |
265cc84a MM |
467 | } |
468 | ||
469 | /* Output xcoff info for the absolute end of a function. | |
470 | Called after the epilogue is output. */ | |
471 | ||
472 | void | |
2e1eedd6 AJ |
473 | xcoffout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, |
474 | const char *file ATTRIBUTE_UNUSED) | |
265cc84a MM |
475 | { |
476 | /* We need to pass the correct function size to .function, otherwise, | |
477 | the xas assembler can't figure out the correct size for the function | |
478 | aux entry. So, we emit a label after the last instruction which can | |
6dc42e49 | 479 | be used by the .function pseudo op to calculate the function size. */ |
265cc84a | 480 | |
53cd5d6c | 481 | const char *fname = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); |
265cc84a MM |
482 | if (*fname == '*') |
483 | ++fname; | |
e2a12aca NB |
484 | fprintf (asm_out_file, "FE.."); |
485 | ASM_OUTPUT_LABEL (asm_out_file, fname); | |
265cc84a MM |
486 | } |
487 | #endif /* XCOFF_DEBUGGING_INFO */ |