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Commit | Line | Data |
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265cc84a | 1 | /* Output xcoff-format symbol table information from GNU compiler. |
abf9af02 KH |
2 | Copyright (C) 1992, 1994, 1995, 1997, 1998, 1999, 2000 |
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" |
265cc84a MM |
35 | |
36 | #ifdef XCOFF_DEBUGGING_INFO | |
37 | ||
38 | /* This defines the C_* storage classes. */ | |
7719ffbf | 39 | #include "dbxstclass.h" |
f246a305 | 40 | #include "xcoffout.h" |
296b8152 | 41 | #include "dbxout.h" |
265cc84a | 42 | #include "gstab.h" |
265cc84a | 43 | |
265cc84a MM |
44 | /* Line number of beginning of current function, minus one. |
45 | Negative means not in a function or not using xcoff. */ | |
46 | ||
d12de8ce RK |
47 | static int xcoff_begin_function_line = -1; |
48 | static int xcoff_inlining = 0; | |
265cc84a MM |
49 | |
50 | /* Name of the current include file. */ | |
51 | ||
53cd5d6c | 52 | const char *xcoff_current_include_file; |
265cc84a MM |
53 | |
54 | /* Name of the current function file. This is the file the `.bf' is | |
55 | emitted from. In case a line is emitted from a different file, | |
56 | (by including that file of course), then the line number will be | |
57 | absolute. */ | |
58 | ||
53cd5d6c | 59 | static const char *xcoff_current_function_file; |
265cc84a MM |
60 | |
61 | /* Names of bss and data sections. These should be unique names for each | |
62 | compilation unit. */ | |
63 | ||
64 | char *xcoff_bss_section_name; | |
65 | char *xcoff_private_data_section_name; | |
66 | char *xcoff_read_only_section_name; | |
3fe49c00 JW |
67 | |
68 | /* Last source file name mentioned in a NOTE insn. */ | |
69 | ||
53cd5d6c | 70 | const char *xcoff_lastfile; |
265cc84a MM |
71 | \f |
72 | /* Macro definitions used below. */ | |
265cc84a | 73 | |
3fe49c00 | 74 | #define ABS_OR_RELATIVE_LINENO(LINENO) \ |
e02791a6 | 75 | ((xcoff_inlining) ? (LINENO) : (LINENO) - xcoff_begin_function_line) |
3fe49c00 JW |
76 | |
77 | /* Output source line numbers via ".line" rather than ".stabd". */ | |
78 | #define ASM_OUTPUT_SOURCE_LINE(FILE,LINENUM) \ | |
79 | do { \ | |
80 | if (xcoff_begin_function_line >= 0) \ | |
81 | fprintf (FILE, "\t.line\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)); \ | |
82 | } while (0) | |
83 | ||
265cc84a MM |
84 | #define ASM_OUTPUT_LFB(FILE,LINENUM) \ |
85 | { \ | |
86 | if (xcoff_begin_function_line == -1) \ | |
87 | { \ | |
88 | xcoff_begin_function_line = (LINENUM) - 1;\ | |
89 | fprintf (FILE, "\t.bf\t%d\n", (LINENUM)); \ | |
90 | } \ | |
91 | xcoff_current_function_file \ | |
92 | = (xcoff_current_include_file \ | |
93 | ? xcoff_current_include_file : main_input_filename); \ | |
94 | } | |
95 | ||
96 | #define ASM_OUTPUT_LFE(FILE,LINENUM) \ | |
97 | do { \ | |
9509444c | 98 | fprintf (FILE, "\t.ef\t%d\n", (LINENUM)); \ |
265cc84a MM |
99 | xcoff_begin_function_line = -1; \ |
100 | } while (0) | |
101 | ||
102 | #define ASM_OUTPUT_LBB(FILE,LINENUM,BLOCKNUM) \ | |
5c43aed8 | 103 | fprintf (FILE, "\t.bb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) |
265cc84a MM |
104 | |
105 | #define ASM_OUTPUT_LBE(FILE,LINENUM,BLOCKNUM) \ | |
5c43aed8 | 106 | fprintf (FILE, "\t.eb\t%d\n", ABS_OR_RELATIVE_LINENO (LINENUM)) |
670ee920 | 107 | |
0a336522 | 108 | static void assign_type_number PARAMS ((tree, const char *, int)); |
957e4763 | 109 | static void xcoffout_block PARAMS ((tree, int, tree)); |
0a336522 | 110 | static void xcoffout_source_file PARAMS ((FILE *, const char *, int)); |
265cc84a MM |
111 | \f |
112 | /* Support routines for XCOFF debugging info. */ | |
113 | ||
114 | /* Assign NUMBER as the stabx type number for the type described by NAME. | |
115 | Search all decls in the list SYMS to find the type NAME. */ | |
116 | ||
117 | static void | |
118 | assign_type_number (syms, name, number) | |
119 | tree syms; | |
0a336522 | 120 | const char *name; |
265cc84a MM |
121 | int number; |
122 | { | |
123 | tree decl; | |
124 | ||
125 | for (decl = syms; decl; decl = TREE_CHAIN (decl)) | |
a8ccbf53 MS |
126 | if (DECL_NAME (decl) |
127 | && strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)), name) == 0) | |
265cc84a MM |
128 | { |
129 | TREE_ASM_WRITTEN (decl) = 1; | |
130 | TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl)) = number; | |
131 | } | |
132 | } | |
133 | ||
134 | /* Setup gcc primitive types to use the XCOFF built-in type numbers where | |
135 | possible. */ | |
136 | ||
137 | void | |
138 | xcoff_output_standard_types (syms) | |
139 | tree syms; | |
140 | { | |
141 | /* Handle built-in C types here. */ | |
142 | ||
d12de8ce | 143 | assign_type_number (syms, "int", -1); |
265cc84a MM |
144 | assign_type_number (syms, "char", -2); |
145 | assign_type_number (syms, "short int", -3); | |
0be37202 | 146 | assign_type_number (syms, "long int", (TARGET_64BIT ? -31 : -4)); |
265cc84a MM |
147 | assign_type_number (syms, "unsigned char", -5); |
148 | assign_type_number (syms, "signed char", -6); | |
149 | assign_type_number (syms, "short unsigned int", -7); | |
d12de8ce | 150 | assign_type_number (syms, "unsigned int", -8); |
265cc84a | 151 | /* No such type "unsigned". */ |
0be37202 | 152 | assign_type_number (syms, "long unsigned int", (TARGET_64BIT ? -32 : -10)); |
265cc84a MM |
153 | assign_type_number (syms, "void", -11); |
154 | assign_type_number (syms, "float", -12); | |
155 | assign_type_number (syms, "double", -13); | |
156 | assign_type_number (syms, "long double", -14); | |
157 | /* Pascal and Fortran types run from -15 to -29. */ | |
0be37202 RK |
158 | assign_type_number (syms, "wchar", -30); |
159 | assign_type_number (syms, "long long int", -31); | |
160 | assign_type_number (syms, "long long unsigned int", -32); | |
161 | /* Additional Fortran types run from -33 to -37. */ | |
265cc84a MM |
162 | |
163 | /* ??? Should also handle built-in C++ and Obj-C types. There perhaps | |
164 | aren't any that C doesn't already have. */ | |
165 | } | |
166 | ||
167 | /* Print an error message for unrecognized stab codes. */ | |
168 | ||
169 | #define UNKNOWN_STAB(STR) \ | |
ad087b92 | 170 | internal_error ("No sclass for %s stab (0x%x)\n", STR, stab) |
265cc84a MM |
171 | |
172 | /* Conversion routine from BSD stabs to AIX storage classes. */ | |
173 | ||
174 | int | |
175 | stab_to_sclass (stab) | |
176 | int stab; | |
177 | { | |
178 | switch (stab) | |
179 | { | |
180 | case N_GSYM: | |
181 | return C_GSYM; | |
182 | ||
183 | case N_FNAME: | |
abf9af02 | 184 | UNKNOWN_STAB ("N_FNAME"); |
265cc84a MM |
185 | |
186 | case N_FUN: | |
187 | return C_FUN; | |
188 | ||
189 | case N_STSYM: | |
190 | case N_LCSYM: | |
191 | return C_STSYM; | |
192 | ||
193 | case N_MAIN: | |
abf9af02 | 194 | UNKNOWN_STAB ("N_MAIN"); |
265cc84a MM |
195 | |
196 | case N_RSYM: | |
197 | return C_RSYM; | |
198 | ||
199 | case N_SSYM: | |
abf9af02 | 200 | UNKNOWN_STAB ("N_SSYM"); |
265cc84a MM |
201 | |
202 | case N_RPSYM: | |
203 | return C_RPSYM; | |
204 | ||
205 | case N_PSYM: | |
206 | return C_PSYM; | |
207 | case N_LSYM: | |
208 | return C_LSYM; | |
209 | case N_DECL: | |
210 | return C_DECL; | |
211 | case N_ENTRY: | |
212 | return C_ENTRY; | |
213 | ||
214 | case N_SO: | |
abf9af02 | 215 | UNKNOWN_STAB ("N_SO"); |
265cc84a MM |
216 | |
217 | case N_SOL: | |
abf9af02 | 218 | UNKNOWN_STAB ("N_SOL"); |
265cc84a MM |
219 | |
220 | case N_SLINE: | |
abf9af02 | 221 | UNKNOWN_STAB ("N_SLINE"); |
265cc84a MM |
222 | |
223 | case N_DSLINE: | |
abf9af02 | 224 | UNKNOWN_STAB ("N_DSLINE"); |
265cc84a MM |
225 | |
226 | case N_BSLINE: | |
abf9af02 | 227 | UNKNOWN_STAB ("N_BSLINE"); |
265cc84a MM |
228 | |
229 | case N_BINCL: | |
abf9af02 | 230 | UNKNOWN_STAB ("N_BINCL"); |
265cc84a MM |
231 | |
232 | case N_EINCL: | |
abf9af02 | 233 | UNKNOWN_STAB ("N_EINCL"); |
265cc84a MM |
234 | |
235 | case N_EXCL: | |
abf9af02 | 236 | UNKNOWN_STAB ("N_EXCL"); |
265cc84a MM |
237 | |
238 | case N_LBRAC: | |
abf9af02 | 239 | UNKNOWN_STAB ("N_LBRAC"); |
265cc84a MM |
240 | |
241 | case N_RBRAC: | |
abf9af02 | 242 | UNKNOWN_STAB ("N_RBRAC"); |
265cc84a MM |
243 | |
244 | case N_BCOMM: | |
245 | return C_BCOMM; | |
246 | case N_ECOMM: | |
247 | return C_ECOMM; | |
248 | case N_ECOML: | |
249 | return C_ECOML; | |
250 | ||
251 | case N_LENG: | |
abf9af02 | 252 | UNKNOWN_STAB ("N_LENG"); |
265cc84a MM |
253 | |
254 | case N_PC: | |
abf9af02 | 255 | UNKNOWN_STAB ("N_PC"); |
265cc84a MM |
256 | |
257 | case N_M2C: | |
abf9af02 | 258 | UNKNOWN_STAB ("N_M2C"); |
265cc84a MM |
259 | |
260 | case N_SCOPE: | |
abf9af02 | 261 | UNKNOWN_STAB ("N_SCOPE"); |
265cc84a MM |
262 | |
263 | case N_CATCH: | |
abf9af02 | 264 | UNKNOWN_STAB ("N_CATCH"); |
ad087b92 | 265 | |
ad087b92 ZW |
266 | case N_OPT: |
267 | UNKNOWN_STAB ("N_OPT"); | |
265cc84a MM |
268 | |
269 | default: | |
ad087b92 | 270 | UNKNOWN_STAB ("?"); |
abf9af02 | 271 | } |
265cc84a | 272 | } |
3fe49c00 | 273 | \f |
3fe49c00 JW |
274 | /* Output debugging info to FILE to switch to sourcefile FILENAME. |
275 | INLINE_P is true if this is from an inlined function. */ | |
276 | ||
0a336522 | 277 | static void |
3fe49c00 JW |
278 | xcoffout_source_file (file, filename, inline_p) |
279 | FILE *file; | |
53cd5d6c | 280 | const char *filename; |
3fe49c00 JW |
281 | int inline_p; |
282 | { | |
283 | if (filename | |
284 | && (xcoff_lastfile == 0 || strcmp (filename, xcoff_lastfile) | |
e02791a6 RK |
285 | || (inline_p && ! xcoff_inlining) |
286 | || (! inline_p && xcoff_inlining))) | |
3fe49c00 JW |
287 | { |
288 | if (xcoff_current_include_file) | |
289 | { | |
290 | fprintf (file, "\t.ei\t"); | |
291 | output_quoted_string (file, xcoff_current_include_file); | |
292 | fprintf (file, "\n"); | |
293 | xcoff_current_include_file = NULL; | |
294 | } | |
abf9af02 | 295 | xcoff_inlining = inline_p; |
3fe49c00 JW |
296 | if (strcmp (main_input_filename, filename) || inline_p) |
297 | { | |
298 | fprintf (file, "\t.bi\t"); | |
299 | output_quoted_string (file, filename); | |
300 | fprintf (file, "\n"); | |
301 | xcoff_current_include_file = filename; | |
302 | } | |
3fe49c00 JW |
303 | xcoff_lastfile = filename; |
304 | } | |
305 | } | |
306 | ||
653e276c | 307 | /* Output a line number symbol entry for location (FILENAME, LINE). */ |
3fe49c00 JW |
308 | |
309 | void | |
653e276c NB |
310 | xcoffout_source_line (line, filename) |
311 | unsigned int line; | |
53cd5d6c | 312 | const char *filename; |
3fe49c00 | 313 | { |
653e276c NB |
314 | bool inline_p = (strcmp (xcoff_current_function_file, filename) != 0 |
315 | || (int) line < xcoff_begin_function_line); | |
316 | ||
317 | xcoffout_source_file (asm_out_file, filename, inline_p); | |
3fe49c00 | 318 | |
653e276c | 319 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line); |
3fe49c00 JW |
320 | } |
321 | \f | |
265cc84a | 322 | /* Output the symbols defined in block number DO_BLOCK. |
265cc84a MM |
323 | |
324 | This function works by walking the tree structure of blocks, | |
325 | counting blocks until it finds the desired block. */ | |
326 | ||
327 | static int do_block = 0; | |
328 | ||
265cc84a MM |
329 | static void |
330 | xcoffout_block (block, depth, args) | |
b3694847 | 331 | tree block; |
265cc84a MM |
332 | int depth; |
333 | tree args; | |
334 | { | |
335 | while (block) | |
336 | { | |
337 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
338 | if (TREE_USED (block)) | |
339 | { | |
340 | /* When we reach the specified block, output its symbols. */ | |
18c038b9 | 341 | if (BLOCK_NUMBER (block) == do_block) |
265cc84a MM |
342 | { |
343 | /* Output the syms of the block. */ | |
344 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
345 | dbxout_syms (BLOCK_VARS (block)); | |
346 | if (args) | |
347 | dbxout_reg_parms (args); | |
348 | ||
349 | /* We are now done with the block. Don't go to inner blocks. */ | |
350 | return; | |
351 | } | |
352 | /* If we are past the specified block, stop the scan. */ | |
18c038b9 | 353 | else if (BLOCK_NUMBER (block) >= do_block) |
265cc84a MM |
354 | return; |
355 | ||
265cc84a | 356 | /* Output the subblocks. */ |
c166a311 | 357 | xcoffout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
265cc84a MM |
358 | } |
359 | block = BLOCK_CHAIN (block); | |
360 | } | |
361 | } | |
362 | ||
363 | /* Describe the beginning of an internal block within a function. | |
364 | Also output descriptions of variables defined in this block. | |
365 | ||
366 | N is the number of the block, by order of beginning, counting from 1, | |
367 | and not counting the outermost (function top-level) block. | |
368 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
369 | if the count starts at 0 for the outermost one. */ | |
370 | ||
371 | void | |
e2a12aca NB |
372 | xcoffout_begin_block (line, n) |
373 | unsigned int line; | |
374 | unsigned int n; | |
265cc84a MM |
375 | { |
376 | tree decl = current_function_decl; | |
377 | ||
ced21a32 JW |
378 | /* The IBM AIX compiler does not emit a .bb for the function level scope, |
379 | so we avoid it here also. */ | |
380 | if (n != 1) | |
e2a12aca | 381 | ASM_OUTPUT_LBB (asm_out_file, line, n); |
265cc84a MM |
382 | |
383 | do_block = n; | |
265cc84a MM |
384 | xcoffout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); |
385 | } | |
386 | ||
387 | /* Describe the end line-number of an internal block within a function. */ | |
388 | ||
389 | void | |
e2a12aca NB |
390 | xcoffout_end_block (line, n) |
391 | unsigned int line; | |
392 | unsigned int n; | |
265cc84a | 393 | { |
ced21a32 | 394 | if (n != 1) |
e2a12aca | 395 | ASM_OUTPUT_LBE (asm_out_file, line, n); |
265cc84a MM |
396 | } |
397 | ||
c2a47e48 RK |
398 | /* Called at beginning of function (before prologue). |
399 | Declare function as needed for debugging. */ | |
400 | ||
401 | void | |
402 | xcoffout_declare_function (file, decl, name) | |
403 | FILE *file; | |
404 | tree decl; | |
53cd5d6c | 405 | const char *name; |
c2a47e48 | 406 | { |
c2a47e48 RK |
407 | int i; |
408 | ||
0a336522 KG |
409 | if (*name == '*') |
410 | name++; | |
4255aa9b RK |
411 | else |
412 | for (i = 0; name[i]; ++i) | |
413 | { | |
414 | if (name[i] == '[') | |
415 | { | |
0a336522 | 416 | char *n = (char *) alloca (i + 1); |
4255aa9b RK |
417 | strncpy (n, name, i); |
418 | n[i] = '\0'; | |
0a336522 | 419 | name = n; |
4255aa9b RK |
420 | break; |
421 | } | |
422 | } | |
c2a47e48 | 423 | |
9faa82d8 | 424 | /* Any pending .bi or .ei must occur before the .function pseudo op. |
ad3b4030 JW |
425 | Otherwise debuggers will think that the function is in the previous |
426 | file and/or at the wrong line number. */ | |
3fe49c00 | 427 | xcoffout_source_file (file, DECL_SOURCE_FILE (decl), 0); |
c2a47e48 | 428 | dbxout_symbol (decl, 0); |
c81fc13e DE |
429 | |
430 | /* .function NAME, TOP, MAPPING, TYPE, SIZE | |
431 | 16 and 044 are placeholders for backwards compatibility */ | |
0a336522 KG |
432 | fprintf (file, "\t.function .%s,.%s,16,044,FE..%s-.%s\n", |
433 | name, name, name, name); | |
c2a47e48 RK |
434 | } |
435 | ||
653e276c | 436 | /* Called at beginning of function body (at start of prologue). |
265cc84a MM |
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 | |
653e276c NB |
442 | xcoffout_begin_prologue (line, file) |
443 | 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 | ||
653e276c | 457 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line); |
265cc84a MM |
458 | } |
459 | ||
460 | /* Called at end of function (before epilogue). | |
461 | Describe end of outermost block. */ | |
462 | ||
463 | void | |
e2a12aca NB |
464 | xcoffout_end_function (last_linenum) |
465 | unsigned int last_linenum; | |
265cc84a | 466 | { |
e2a12aca | 467 | ASM_OUTPUT_LFE (asm_out_file, last_linenum); |
265cc84a MM |
468 | } |
469 | ||
470 | /* Output xcoff info for the absolute end of a function. | |
471 | Called after the epilogue is output. */ | |
472 | ||
473 | void | |
e2a12aca | 474 | xcoffout_end_epilogue () |
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 */ |