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Commit | Line | Data |
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265cc84a | 1 | /* Output xcoff-format symbol table information from GNU compiler. |
c203e7fe | 2 | Copyright (C) 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2002 |
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" |
265cc84a MM |
29 | #include "tree.h" |
30 | #include "rtl.h" | |
31 | #include "flags.h" | |
296b8152 KG |
32 | #include "toplev.h" |
33 | #include "output.h" | |
951a525f | 34 | #include "ggc.h" |
772c5265 | 35 | #include "target.h" |
265cc84a MM |
36 | |
37 | #ifdef XCOFF_DEBUGGING_INFO | |
38 | ||
39 | /* This defines the C_* storage classes. */ | |
7719ffbf | 40 | #include "dbxstclass.h" |
f246a305 | 41 | #include "xcoffout.h" |
296b8152 | 42 | #include "dbxout.h" |
265cc84a | 43 | #include "gstab.h" |
265cc84a | 44 | |
265cc84a MM |
45 | /* Line number of beginning of current function, minus one. |
46 | Negative means not in a function or not using xcoff. */ | |
47 | ||
d12de8ce RK |
48 | static int xcoff_begin_function_line = -1; |
49 | static int xcoff_inlining = 0; | |
265cc84a MM |
50 | |
51 | /* Name of the current include file. */ | |
52 | ||
53cd5d6c | 53 | const char *xcoff_current_include_file; |
265cc84a MM |
54 | |
55 | /* Name of the current function file. This is the file the `.bf' is | |
56 | emitted from. In case a line is emitted from a different file, | |
57 | (by including that file of course), then the line number will be | |
58 | absolute. */ | |
59 | ||
53cd5d6c | 60 | static const char *xcoff_current_function_file; |
265cc84a MM |
61 | |
62 | /* Names of bss and data sections. These should be unique names for each | |
63 | compilation unit. */ | |
64 | ||
65 | char *xcoff_bss_section_name; | |
66 | char *xcoff_private_data_section_name; | |
67 | char *xcoff_read_only_section_name; | |
3fe49c00 JW |
68 | |
69 | /* Last source file name mentioned in a NOTE insn. */ | |
70 | ||
53cd5d6c | 71 | const char *xcoff_lastfile; |
265cc84a MM |
72 | \f |
73 | /* Macro definitions used below. */ | |
265cc84a | 74 | |
3fe49c00 | 75 | #define ABS_OR_RELATIVE_LINENO(LINENO) \ |
e02791a6 | 76 | ((xcoff_inlining) ? (LINENO) : (LINENO) - xcoff_begin_function_line) |
3fe49c00 JW |
77 | |
78 | /* Output source line numbers via ".line" rather than ".stabd". */ | |
c203e7fe KH |
79 | #define ASM_OUTPUT_SOURCE_LINE(FILE,LINENUM) \ |
80 | do \ | |
81 | { \ | |
82 | if (xcoff_begin_function_line >= 0) \ | |
83 | fprintf (FILE, "\t.line\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)); \ | |
84 | } \ | |
85 | while (0) | |
3fe49c00 | 86 | |
265cc84a MM |
87 | #define ASM_OUTPUT_LFB(FILE,LINENUM) \ |
88 | { \ | |
89 | if (xcoff_begin_function_line == -1) \ | |
90 | { \ | |
91 | xcoff_begin_function_line = (LINENUM) - 1;\ | |
92 | fprintf (FILE, "\t.bf\t%d\n", (LINENUM)); \ | |
93 | } \ | |
94 | xcoff_current_function_file \ | |
95 | = (xcoff_current_include_file \ | |
96 | ? xcoff_current_include_file : main_input_filename); \ | |
97 | } | |
98 | ||
c203e7fe KH |
99 | #define ASM_OUTPUT_LFE(FILE,LINENUM) \ |
100 | do \ | |
101 | { \ | |
102 | fprintf (FILE, "\t.ef\t%d\n", (LINENUM)); \ | |
103 | xcoff_begin_function_line = -1; \ | |
104 | } \ | |
105 | while (0) | |
265cc84a MM |
106 | |
107 | #define ASM_OUTPUT_LBB(FILE,LINENUM,BLOCKNUM) \ | |
5c43aed8 | 108 | fprintf (FILE, "\t.bb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) |
265cc84a MM |
109 | |
110 | #define ASM_OUTPUT_LBE(FILE,LINENUM,BLOCKNUM) \ | |
5c43aed8 | 111 | fprintf (FILE, "\t.eb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) |
670ee920 | 112 | |
0a336522 | 113 | static void assign_type_number PARAMS ((tree, const char *, int)); |
957e4763 | 114 | static void xcoffout_block PARAMS ((tree, int, tree)); |
0a336522 | 115 | static void xcoffout_source_file PARAMS ((FILE *, const char *, int)); |
265cc84a MM |
116 | \f |
117 | /* Support routines for XCOFF debugging info. */ | |
118 | ||
119 | /* Assign NUMBER as the stabx type number for the type described by NAME. | |
120 | Search all decls in the list SYMS to find the type NAME. */ | |
121 | ||
122 | static void | |
123 | assign_type_number (syms, name, number) | |
124 | tree syms; | |
0a336522 | 125 | const char *name; |
265cc84a MM |
126 | int number; |
127 | { | |
128 | tree decl; | |
129 | ||
130 | for (decl = syms; decl; decl = TREE_CHAIN (decl)) | |
a8ccbf53 MS |
131 | if (DECL_NAME (decl) |
132 | && strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)), name) == 0) | |
265cc84a MM |
133 | { |
134 | TREE_ASM_WRITTEN (decl) = 1; | |
135 | TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl)) = number; | |
136 | } | |
137 | } | |
138 | ||
139 | /* Setup gcc primitive types to use the XCOFF built-in type numbers where | |
140 | possible. */ | |
141 | ||
142 | void | |
143 | xcoff_output_standard_types (syms) | |
144 | tree syms; | |
145 | { | |
146 | /* Handle built-in C types here. */ | |
147 | ||
d12de8ce | 148 | assign_type_number (syms, "int", -1); |
265cc84a MM |
149 | assign_type_number (syms, "char", -2); |
150 | assign_type_number (syms, "short int", -3); | |
0be37202 | 151 | assign_type_number (syms, "long int", (TARGET_64BIT ? -31 : -4)); |
265cc84a MM |
152 | assign_type_number (syms, "unsigned char", -5); |
153 | assign_type_number (syms, "signed char", -6); | |
154 | assign_type_number (syms, "short unsigned int", -7); | |
d12de8ce | 155 | assign_type_number (syms, "unsigned int", -8); |
265cc84a | 156 | /* No such type "unsigned". */ |
0be37202 | 157 | assign_type_number (syms, "long unsigned int", (TARGET_64BIT ? -32 : -10)); |
265cc84a MM |
158 | assign_type_number (syms, "void", -11); |
159 | assign_type_number (syms, "float", -12); | |
160 | assign_type_number (syms, "double", -13); | |
161 | assign_type_number (syms, "long double", -14); | |
162 | /* Pascal and Fortran types run from -15 to -29. */ | |
0be37202 RK |
163 | assign_type_number (syms, "wchar", -30); |
164 | assign_type_number (syms, "long long int", -31); | |
165 | assign_type_number (syms, "long long unsigned int", -32); | |
166 | /* Additional Fortran types run from -33 to -37. */ | |
265cc84a MM |
167 | |
168 | /* ??? Should also handle built-in C++ and Obj-C types. There perhaps | |
169 | aren't any that C doesn't already have. */ | |
170 | } | |
171 | ||
172 | /* Print an error message for unrecognized stab codes. */ | |
173 | ||
174 | #define UNKNOWN_STAB(STR) \ | |
1f978f5f | 175 | internal_error ("no sclass for %s stab (0x%x)\n", STR, stab) |
265cc84a MM |
176 | |
177 | /* Conversion routine from BSD stabs to AIX storage classes. */ | |
178 | ||
179 | int | |
180 | stab_to_sclass (stab) | |
181 | int stab; | |
182 | { | |
183 | switch (stab) | |
184 | { | |
185 | case N_GSYM: | |
186 | return C_GSYM; | |
187 | ||
188 | case N_FNAME: | |
abf9af02 | 189 | UNKNOWN_STAB ("N_FNAME"); |
265cc84a MM |
190 | |
191 | case N_FUN: | |
192 | return C_FUN; | |
193 | ||
194 | case N_STSYM: | |
195 | case N_LCSYM: | |
196 | return C_STSYM; | |
197 | ||
198 | case N_MAIN: | |
abf9af02 | 199 | UNKNOWN_STAB ("N_MAIN"); |
265cc84a MM |
200 | |
201 | case N_RSYM: | |
202 | return C_RSYM; | |
203 | ||
204 | case N_SSYM: | |
abf9af02 | 205 | UNKNOWN_STAB ("N_SSYM"); |
265cc84a MM |
206 | |
207 | case N_RPSYM: | |
208 | return C_RPSYM; | |
209 | ||
210 | case N_PSYM: | |
211 | return C_PSYM; | |
212 | case N_LSYM: | |
213 | return C_LSYM; | |
214 | case N_DECL: | |
215 | return C_DECL; | |
216 | case N_ENTRY: | |
217 | return C_ENTRY; | |
218 | ||
219 | case N_SO: | |
abf9af02 | 220 | UNKNOWN_STAB ("N_SO"); |
265cc84a MM |
221 | |
222 | case N_SOL: | |
abf9af02 | 223 | UNKNOWN_STAB ("N_SOL"); |
265cc84a MM |
224 | |
225 | case N_SLINE: | |
abf9af02 | 226 | UNKNOWN_STAB ("N_SLINE"); |
265cc84a MM |
227 | |
228 | case N_DSLINE: | |
abf9af02 | 229 | UNKNOWN_STAB ("N_DSLINE"); |
265cc84a MM |
230 | |
231 | case N_BSLINE: | |
abf9af02 | 232 | UNKNOWN_STAB ("N_BSLINE"); |
265cc84a MM |
233 | |
234 | case N_BINCL: | |
abf9af02 | 235 | UNKNOWN_STAB ("N_BINCL"); |
265cc84a MM |
236 | |
237 | case N_EINCL: | |
abf9af02 | 238 | UNKNOWN_STAB ("N_EINCL"); |
265cc84a MM |
239 | |
240 | case N_EXCL: | |
abf9af02 | 241 | UNKNOWN_STAB ("N_EXCL"); |
265cc84a MM |
242 | |
243 | case N_LBRAC: | |
abf9af02 | 244 | UNKNOWN_STAB ("N_LBRAC"); |
265cc84a MM |
245 | |
246 | case N_RBRAC: | |
abf9af02 | 247 | UNKNOWN_STAB ("N_RBRAC"); |
265cc84a MM |
248 | |
249 | case N_BCOMM: | |
250 | return C_BCOMM; | |
251 | case N_ECOMM: | |
252 | return C_ECOMM; | |
253 | case N_ECOML: | |
254 | return C_ECOML; | |
255 | ||
256 | case N_LENG: | |
abf9af02 | 257 | UNKNOWN_STAB ("N_LENG"); |
265cc84a MM |
258 | |
259 | case N_PC: | |
abf9af02 | 260 | UNKNOWN_STAB ("N_PC"); |
265cc84a MM |
261 | |
262 | case N_M2C: | |
abf9af02 | 263 | UNKNOWN_STAB ("N_M2C"); |
265cc84a MM |
264 | |
265 | case N_SCOPE: | |
abf9af02 | 266 | UNKNOWN_STAB ("N_SCOPE"); |
265cc84a MM |
267 | |
268 | case N_CATCH: | |
abf9af02 | 269 | UNKNOWN_STAB ("N_CATCH"); |
ad087b92 | 270 | |
ad087b92 ZW |
271 | case N_OPT: |
272 | UNKNOWN_STAB ("N_OPT"); | |
265cc84a MM |
273 | |
274 | default: | |
ad087b92 | 275 | UNKNOWN_STAB ("?"); |
abf9af02 | 276 | } |
265cc84a | 277 | } |
3fe49c00 | 278 | \f |
3fe49c00 JW |
279 | /* Output debugging info to FILE to switch to sourcefile FILENAME. |
280 | INLINE_P is true if this is from an inlined function. */ | |
281 | ||
0a336522 | 282 | static void |
3fe49c00 JW |
283 | xcoffout_source_file (file, filename, inline_p) |
284 | FILE *file; | |
53cd5d6c | 285 | const char *filename; |
3fe49c00 JW |
286 | int inline_p; |
287 | { | |
288 | if (filename | |
289 | && (xcoff_lastfile == 0 || strcmp (filename, xcoff_lastfile) | |
e02791a6 RK |
290 | || (inline_p && ! xcoff_inlining) |
291 | || (! inline_p && xcoff_inlining))) | |
3fe49c00 JW |
292 | { |
293 | if (xcoff_current_include_file) | |
294 | { | |
295 | fprintf (file, "\t.ei\t"); | |
296 | output_quoted_string (file, xcoff_current_include_file); | |
297 | fprintf (file, "\n"); | |
298 | xcoff_current_include_file = NULL; | |
299 | } | |
abf9af02 | 300 | xcoff_inlining = inline_p; |
3fe49c00 JW |
301 | if (strcmp (main_input_filename, filename) || inline_p) |
302 | { | |
303 | fprintf (file, "\t.bi\t"); | |
304 | output_quoted_string (file, filename); | |
305 | fprintf (file, "\n"); | |
306 | xcoff_current_include_file = filename; | |
307 | } | |
3fe49c00 JW |
308 | xcoff_lastfile = filename; |
309 | } | |
310 | } | |
311 | ||
653e276c | 312 | /* Output a line number symbol entry for location (FILENAME, LINE). */ |
3fe49c00 JW |
313 | |
314 | void | |
653e276c NB |
315 | xcoffout_source_line (line, filename) |
316 | unsigned int line; | |
53cd5d6c | 317 | const char *filename; |
3fe49c00 | 318 | { |
653e276c NB |
319 | bool inline_p = (strcmp (xcoff_current_function_file, filename) != 0 |
320 | || (int) line < xcoff_begin_function_line); | |
321 | ||
322 | xcoffout_source_file (asm_out_file, filename, inline_p); | |
3fe49c00 | 323 | |
653e276c | 324 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line); |
3fe49c00 JW |
325 | } |
326 | \f | |
265cc84a | 327 | /* Output the symbols defined in block number DO_BLOCK. |
265cc84a MM |
328 | |
329 | This function works by walking the tree structure of blocks, | |
330 | counting blocks until it finds the desired block. */ | |
331 | ||
332 | static int do_block = 0; | |
333 | ||
265cc84a MM |
334 | static void |
335 | xcoffout_block (block, depth, args) | |
b3694847 | 336 | tree block; |
265cc84a MM |
337 | int depth; |
338 | tree args; | |
339 | { | |
340 | while (block) | |
341 | { | |
342 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
343 | if (TREE_USED (block)) | |
344 | { | |
345 | /* When we reach the specified block, output its symbols. */ | |
18c038b9 | 346 | if (BLOCK_NUMBER (block) == do_block) |
265cc84a MM |
347 | { |
348 | /* Output the syms of the block. */ | |
349 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
350 | dbxout_syms (BLOCK_VARS (block)); | |
351 | if (args) | |
352 | dbxout_reg_parms (args); | |
353 | ||
354 | /* We are now done with the block. Don't go to inner blocks. */ | |
355 | return; | |
356 | } | |
357 | /* If we are past the specified block, stop the scan. */ | |
18c038b9 | 358 | else if (BLOCK_NUMBER (block) >= do_block) |
265cc84a MM |
359 | return; |
360 | ||
265cc84a | 361 | /* Output the subblocks. */ |
c166a311 | 362 | xcoffout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
265cc84a MM |
363 | } |
364 | block = BLOCK_CHAIN (block); | |
365 | } | |
366 | } | |
367 | ||
368 | /* Describe the beginning of an internal block within a function. | |
369 | Also output descriptions of variables defined in this block. | |
370 | ||
371 | N is the number of the block, by order of beginning, counting from 1, | |
372 | and not counting the outermost (function top-level) block. | |
373 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
374 | if the count starts at 0 for the outermost one. */ | |
375 | ||
376 | void | |
e2a12aca NB |
377 | xcoffout_begin_block (line, n) |
378 | unsigned int line; | |
379 | unsigned int n; | |
265cc84a MM |
380 | { |
381 | tree decl = current_function_decl; | |
382 | ||
ced21a32 JW |
383 | /* The IBM AIX compiler does not emit a .bb for the function level scope, |
384 | so we avoid it here also. */ | |
385 | if (n != 1) | |
e2a12aca | 386 | ASM_OUTPUT_LBB (asm_out_file, line, n); |
265cc84a MM |
387 | |
388 | do_block = n; | |
265cc84a MM |
389 | xcoffout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); |
390 | } | |
391 | ||
392 | /* Describe the end line-number of an internal block within a function. */ | |
393 | ||
394 | void | |
e2a12aca NB |
395 | xcoffout_end_block (line, n) |
396 | unsigned int line; | |
397 | unsigned int n; | |
265cc84a | 398 | { |
ced21a32 | 399 | if (n != 1) |
e2a12aca | 400 | ASM_OUTPUT_LBE (asm_out_file, line, n); |
265cc84a MM |
401 | } |
402 | ||
c2a47e48 RK |
403 | /* Called at beginning of function (before prologue). |
404 | Declare function as needed for debugging. */ | |
405 | ||
406 | void | |
407 | xcoffout_declare_function (file, decl, name) | |
408 | FILE *file; | |
409 | tree decl; | |
53cd5d6c | 410 | const char *name; |
c2a47e48 | 411 | { |
c2a47e48 RK |
412 | int i; |
413 | ||
0a336522 KG |
414 | if (*name == '*') |
415 | name++; | |
4255aa9b RK |
416 | else |
417 | for (i = 0; name[i]; ++i) | |
418 | { | |
419 | if (name[i] == '[') | |
420 | { | |
0a336522 | 421 | char *n = (char *) alloca (i + 1); |
4255aa9b RK |
422 | strncpy (n, name, i); |
423 | n[i] = '\0'; | |
0a336522 | 424 | name = n; |
4255aa9b RK |
425 | break; |
426 | } | |
427 | } | |
c2a47e48 | 428 | |
9faa82d8 | 429 | /* Any pending .bi or .ei must occur before the .function pseudo op. |
ad3b4030 JW |
430 | Otherwise debuggers will think that the function is in the previous |
431 | file and/or at the wrong line number. */ | |
3fe49c00 | 432 | xcoffout_source_file (file, DECL_SOURCE_FILE (decl), 0); |
c2a47e48 | 433 | dbxout_symbol (decl, 0); |
c81fc13e DE |
434 | |
435 | /* .function NAME, TOP, MAPPING, TYPE, SIZE | |
436 | 16 and 044 are placeholders for backwards compatibility */ | |
0a336522 KG |
437 | fprintf (file, "\t.function .%s,.%s,16,044,FE..%s-.%s\n", |
438 | name, name, name, name); | |
c2a47e48 RK |
439 | } |
440 | ||
653e276c | 441 | /* Called at beginning of function body (at start of prologue). |
265cc84a MM |
442 | Record the function's starting line number, so we can output |
443 | relative line numbers for the other lines. | |
444 | Record the file name that this function is contained in. */ | |
445 | ||
446 | void | |
653e276c NB |
447 | xcoffout_begin_prologue (line, file) |
448 | unsigned int line; | |
449 | const char *file ATTRIBUTE_UNUSED; | |
265cc84a | 450 | { |
653e276c | 451 | ASM_OUTPUT_LFB (asm_out_file, line); |
aa630177 | 452 | dbxout_parms (DECL_ARGUMENTS (current_function_decl)); |
00a2e46c JW |
453 | |
454 | /* Emit the symbols for the outermost BLOCK's variables. sdbout.c does this | |
455 | in sdbout_begin_block, but there is no guarantee that there will be any | |
456 | inner block 1, so we must do it here. This gives a result similar to | |
457 | dbxout, so it does make some sense. */ | |
26a13c2b | 458 | do_block = BLOCK_NUMBER (DECL_INITIAL (current_function_decl)); |
00a2e46c JW |
459 | xcoffout_block (DECL_INITIAL (current_function_decl), 0, |
460 | DECL_ARGUMENTS (current_function_decl)); | |
461 | ||
653e276c | 462 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line); |
265cc84a MM |
463 | } |
464 | ||
465 | /* Called at end of function (before epilogue). | |
466 | Describe end of outermost block. */ | |
467 | ||
468 | void | |
e2a12aca NB |
469 | xcoffout_end_function (last_linenum) |
470 | unsigned int last_linenum; | |
265cc84a | 471 | { |
e2a12aca | 472 | ASM_OUTPUT_LFE (asm_out_file, last_linenum); |
265cc84a MM |
473 | } |
474 | ||
475 | /* Output xcoff info for the absolute end of a function. | |
476 | Called after the epilogue is output. */ | |
477 | ||
478 | void | |
e2a12aca | 479 | xcoffout_end_epilogue () |
265cc84a MM |
480 | { |
481 | /* We need to pass the correct function size to .function, otherwise, | |
482 | the xas assembler can't figure out the correct size for the function | |
483 | aux entry. So, we emit a label after the last instruction which can | |
6dc42e49 | 484 | be used by the .function pseudo op to calculate the function size. */ |
265cc84a | 485 | |
53cd5d6c | 486 | const char *fname = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); |
265cc84a MM |
487 | if (*fname == '*') |
488 | ++fname; | |
e2a12aca NB |
489 | fprintf (asm_out_file, "FE.."); |
490 | ASM_OUTPUT_LABEL (asm_out_file, fname); | |
265cc84a MM |
491 | } |
492 | #endif /* XCOFF_DEBUGGING_INFO */ |