1 /* Output dbx-format symbol table information from GNU compiler.
2 Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GCC.
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
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
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 /* Output dbx-format symbol table data.
24 This consists of many symbol table entries, each of them
25 a .stabs assembler pseudo-op with four operands:
26 a "name" which is really a description of one symbol and its type,
27 a "code", which is a symbol defined in stab.h whose name starts with N_,
28 an unused operand always 0,
29 and a "value" which is an address or an offset.
30 The name is enclosed in doublequote characters.
32 Each function, variable, typedef, and structure tag
33 has a symbol table entry to define it.
34 The beginning and end of each level of name scoping within
35 a function are also marked by special symbol table entries.
37 The "name" consists of the symbol name, a colon, a kind-of-symbol letter,
38 and a data type number. The data type number may be followed by
39 "=" and a type definition; normally this will happen the first time
40 the type number is mentioned. The type definition may refer to
41 other types by number, and those type numbers may be followed
42 by "=" and nested definitions.
44 This can make the "name" quite long.
45 When a name is more than 80 characters, we split the .stabs pseudo-op
46 into two .stabs pseudo-ops, both sharing the same "code" and "value".
47 The first one is marked as continued with a double-backslash at the
50 The kind-of-symbol letter distinguished function names from global
51 variables from file-scope variables from parameters from auto
52 variables in memory from typedef names from register variables.
55 The "code" is mostly redundant with the kind-of-symbol letter
56 that goes in the "name", but not entirely: for symbols located
57 in static storage, the "code" says which segment the address is in,
58 which controls how it is relocated.
60 The "value" for a symbol in static storage
61 is the core address of the symbol (actually, the assembler
62 label for the symbol). For a symbol located in a stack slot
63 it is the stack offset; for one in a register, the register number.
64 For a typedef symbol, it is zero.
66 If DEBUG_SYMS_TEXT is defined, all debugging symbols must be
67 output while in the text section.
69 For more on data type definitions, see `dbxout_type'. */
73 #include "coretypes.h"
80 #include "insn-config.h"
82 #include "output.h" /* ASM_OUTPUT_SOURCE_LINE may refer to sdb functions. */
90 #include "langhooks.h"
92 #ifdef XCOFF_DEBUGGING_INFO
96 #undef DBXOUT_DECR_NESTING
97 #define DBXOUT_DECR_NESTING \
98 if (--debug_nesting == 0 && symbol_queue_index > 0) \
99 { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); }
101 #undef DBXOUT_DECR_NESTING_AND_RETURN
102 #define DBXOUT_DECR_NESTING_AND_RETURN(x) \
103 do {--debug_nesting; return (x);} while (0)
106 #define ASM_STABS_OP "\t.stabs\t"
110 #define ASM_STABN_OP "\t.stabn\t"
113 #ifndef DBX_TYPE_DECL_STABS_CODE
114 #define DBX_TYPE_DECL_STABS_CODE N_LSYM
117 #ifndef DBX_STATIC_CONST_VAR_CODE
118 #define DBX_STATIC_CONST_VAR_CODE N_FUN
121 #ifndef DBX_REGPARM_STABS_CODE
122 #define DBX_REGPARM_STABS_CODE N_RSYM
125 #ifndef DBX_REGPARM_STABS_LETTER
126 #define DBX_REGPARM_STABS_LETTER 'P'
129 /* This is used for parameters passed by invisible reference in a register. */
130 #ifndef GDB_INV_REF_REGPARM_STABS_LETTER
131 #define GDB_INV_REF_REGPARM_STABS_LETTER 'a'
134 #ifndef DBX_MEMPARM_STABS_LETTER
135 #define DBX_MEMPARM_STABS_LETTER 'p'
138 #ifndef FILE_NAME_JOINER
139 #define FILE_NAME_JOINER "/"
142 /* GDB needs to know that the stabs were generated by GCC. We emit an
143 N_OPT stab at the beginning of the source file to indicate this.
144 The string is historical, and different on a very few targets. */
145 #ifndef STABS_GCC_MARKER
146 #define STABS_GCC_MARKER "gcc2_compiled."
149 enum typestatus
{TYPE_UNSEEN
, TYPE_XREF
, TYPE_DEFINED
};
151 /* Structure recording information about a C data type.
152 The status element says whether we have yet output
153 the definition of the type. TYPE_XREF says we have
154 output it as a cross-reference only.
155 The file_number and type_number elements are used if DBX_USE_BINCL
158 struct typeinfo
GTY(())
160 enum typestatus status
;
165 /* Vector recording information about C data types.
166 When we first notice a data type (a tree node),
167 we assign it a number using next_type_number.
168 That is its index in this vector. */
170 static GTY ((length ("typevec_len"))) struct typeinfo
*typevec
;
172 /* Number of elements of space allocated in `typevec'. */
174 static GTY(()) int typevec_len
;
176 /* In dbx output, each type gets a unique number.
177 This is the number for the next type output.
178 The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */
180 static GTY(()) int next_type_number
;
182 /* The C front end may call dbxout_symbol before dbxout_init runs.
183 We save all such decls in this list and output them when we get
186 static GTY(()) tree preinit_symbols
;
188 enum binclstatus
{BINCL_NOT_REQUIRED
, BINCL_PENDING
, BINCL_PROCESSED
};
190 /* When using N_BINCL in dbx output, each type number is actually a
191 pair of the file number and the type number within the file.
192 This is a stack of input files. */
196 struct dbx_file
*next
;
198 int next_type_number
;
199 enum binclstatus bincl_status
; /* Keep track of lazy bincl. */
200 const char *pending_bincl_name
; /* Name of bincl. */
201 struct dbx_file
*prev
; /* Chain to traverse all pending bincls. */
204 /* This is the top of the stack.
206 This is not saved for PCH, because restoring a PCH should not change it.
207 next_file_number does have to be saved, because the PCH may use some
208 file numbers; however, just before restoring a PCH, next_file_number
209 should always be 0 because we should not have needed any file numbers
212 #if (defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)) \
213 && defined (DBX_USE_BINCL)
214 static struct dbx_file
*current_file
;
217 /* This is the next file number to use. */
219 static GTY(()) int next_file_number
;
221 /* A counter for dbxout_function_end. */
223 static GTY(()) int scope_labelno
;
225 /* A counter for dbxout_source_line. */
227 static GTY(()) int dbxout_source_line_counter
;
229 /* Nonzero if we have actually used any of the GDB extensions
230 to the debugging format. The idea is that we use them for the
231 first time only if there's a strong reason, but once we have done that,
232 we use them whenever convenient. */
234 static GTY(()) int have_used_extensions
= 0;
236 /* Number for the next N_SOL filename stabs label. The number 0 is reserved
237 for the N_SO filename stabs label. */
239 static GTY(()) int source_label_number
= 1;
241 /* Last source file name mentioned in a NOTE insn. */
243 static GTY(()) const char *lastfile
;
245 /* Used by PCH machinery to detect if 'lastfile' should be reset to
247 static GTY(()) int lastfile_is_base
;
249 /* Typical USG systems don't have stab.h, and they also have
250 no use for DBX-format debugging info. */
252 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
255 /* If zero then there is no pending BINCL. */
256 static int pending_bincls
= 0;
259 /* The original input file name. */
260 static const char *base_input_file
;
262 /* Current working directory. */
264 static const char *cwd
;
266 #ifdef DEBUG_SYMS_TEXT
267 #define FORCE_TEXT function_section (current_function_decl);
274 #define STAB_CODE_TYPE enum __stab_debug_code
276 /* 1 if PARM is passed to this function in memory. */
278 #define PARM_PASSED_IN_MEMORY(PARM) \
279 (MEM_P (DECL_INCOMING_RTL (PARM)))
281 /* A C expression for the integer offset value of an automatic variable
282 (N_LSYM) having address X (an RTX). */
283 #ifndef DEBUGGER_AUTO_OFFSET
284 #define DEBUGGER_AUTO_OFFSET(X) \
285 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
288 /* A C expression for the integer offset value of an argument (N_PSYM)
289 having address X (an RTX). The nominal offset is OFFSET. */
290 #ifndef DEBUGGER_ARG_OFFSET
291 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
294 /* Stream for writing to assembler file. */
296 static FILE *asmfile
;
298 /* These variables are for dbxout_symbol to communicate to
299 dbxout_finish_symbol.
300 current_sym_code is the symbol-type-code, a symbol N_... define in stab.h.
301 current_sym_value and current_sym_addr are two ways to address the
302 value to store in the symtab entry.
303 current_sym_addr if nonzero represents the value as an rtx.
304 If that is zero, current_sym_value is used. This is used
305 when the value is an offset (such as for auto variables,
306 register variables and parms). */
308 static STAB_CODE_TYPE current_sym_code
;
309 static int current_sym_value
;
310 static rtx current_sym_addr
;
312 /* Number of chars of symbol-description generated so far for the
313 current symbol. Used by CHARS and CONTIN. */
315 static int current_sym_nchars
;
317 /* Report having output N chars of the current symbol-description. */
319 #define CHARS(N) (current_sym_nchars += (N))
321 /* Break the current symbol-description, generating a continuation,
322 if it has become long. */
324 #ifndef DBX_CONTIN_LENGTH
325 #define DBX_CONTIN_LENGTH 80
328 #if DBX_CONTIN_LENGTH > 0
330 do {if (current_sym_nchars > DBX_CONTIN_LENGTH) dbxout_continue ();} while (0)
332 #define CONTIN do { } while (0)
336 static void emit_bincl_stab (const char *c
);
337 static void emit_pending_bincls (void);
339 static inline void emit_pending_bincls_if_required (void);
341 static void dbxout_init (const char *);
342 static void dbxout_finish (const char *);
343 static void dbxout_start_source_file (unsigned, const char *);
344 static void dbxout_end_source_file (unsigned);
345 static void dbxout_typedefs (tree
);
346 static void dbxout_type_index (tree
);
347 #if DBX_CONTIN_LENGTH > 0
348 static void dbxout_continue (void);
350 static void dbxout_args (tree
);
351 static void dbxout_type_fields (tree
);
352 static void dbxout_type_method_1 (tree
, const char *);
353 static void dbxout_type_methods (tree
);
354 static void dbxout_range_type (tree
);
355 static void dbxout_type (tree
, int);
356 static bool print_int_cst_bounds_in_octal_p (tree
);
357 static void print_int_cst_octal (tree
);
358 static void print_octal (unsigned HOST_WIDE_INT
, int);
359 static void print_wide_int (HOST_WIDE_INT
);
360 static void dbxout_type_name (tree
);
361 static void dbxout_class_name_qualifiers (tree
);
362 static int dbxout_symbol_location (tree
, tree
, const char *, rtx
);
363 static void dbxout_symbol_name (tree
, const char *, int);
364 static void dbxout_prepare_symbol (tree
);
365 static void dbxout_finish_symbol (tree
);
366 static void dbxout_block (tree
, int, tree
);
367 static void dbxout_global_decl (tree
);
368 static void dbxout_type_decl (tree
, int);
369 static void dbxout_handle_pch (unsigned);
371 /* The debug hooks structure. */
372 #if defined (DBX_DEBUGGING_INFO)
374 static void dbxout_source_line (unsigned int, const char *);
375 static void dbxout_source_file (FILE *, const char *);
376 static void dbxout_function_end (void);
377 static void dbxout_begin_function (tree
);
378 static void dbxout_begin_block (unsigned, unsigned);
379 static void dbxout_end_block (unsigned, unsigned);
380 static void dbxout_function_decl (tree
);
382 const struct gcc_debug_hooks dbx_debug_hooks
=
386 debug_nothing_int_charstar
,
387 debug_nothing_int_charstar
,
388 dbxout_start_source_file
,
389 dbxout_end_source_file
,
392 debug_true_tree
, /* ignore_block */
393 dbxout_source_line
, /* source_line */
394 dbxout_source_line
, /* begin_prologue: just output
396 debug_nothing_int_charstar
, /* end_prologue */
397 debug_nothing_int_charstar
, /* end_epilogue */
398 #ifdef DBX_FUNCTION_FIRST
399 dbxout_begin_function
,
401 debug_nothing_tree
, /* begin_function */
403 debug_nothing_int
, /* end_function */
404 dbxout_function_decl
,
405 dbxout_global_decl
, /* global_decl */
406 dbxout_type_decl
, /* type_decl */
407 debug_nothing_tree_tree
, /* imported_module_or_decl */
408 debug_nothing_tree
, /* deferred_inline_function */
409 debug_nothing_tree
, /* outlining_inline_function */
410 debug_nothing_rtx
, /* label */
411 dbxout_handle_pch
, /* handle_pch */
412 debug_nothing_rtx
/* var_location */
414 #endif /* DBX_DEBUGGING_INFO */
416 #if defined (XCOFF_DEBUGGING_INFO)
417 const struct gcc_debug_hooks xcoff_debug_hooks
=
421 debug_nothing_int_charstar
,
422 debug_nothing_int_charstar
,
423 dbxout_start_source_file
,
424 dbxout_end_source_file
,
425 xcoffout_begin_block
,
427 debug_true_tree
, /* ignore_block */
428 xcoffout_source_line
,
429 xcoffout_begin_prologue
, /* begin_prologue */
430 debug_nothing_int_charstar
, /* end_prologue */
431 xcoffout_end_epilogue
,
432 debug_nothing_tree
, /* begin_function */
433 xcoffout_end_function
,
434 debug_nothing_tree
, /* function_decl */
435 dbxout_global_decl
, /* global_decl */
436 dbxout_type_decl
, /* type_decl */
437 debug_nothing_tree_tree
, /* imported_module_or_decl */
438 debug_nothing_tree
, /* deferred_inline_function */
439 debug_nothing_tree
, /* outlining_inline_function */
440 debug_nothing_rtx
, /* label */
441 dbxout_handle_pch
, /* handle_pch */
442 debug_nothing_rtx
/* var_location */
444 #endif /* XCOFF_DEBUGGING_INFO */
446 #if defined (DBX_DEBUGGING_INFO)
448 dbxout_function_end (void)
450 char lscope_label_name
[100];
452 function_section (current_function_decl
);
454 /* Convert Ltext into the appropriate format for local labels in case
455 the system doesn't insert underscores in front of user generated
457 ASM_GENERATE_INTERNAL_LABEL (lscope_label_name
, "Lscope", scope_labelno
);
458 targetm
.asm_out
.internal_label (asmfile
, "Lscope", scope_labelno
);
461 /* By convention, GCC will mark the end of a function with an N_FUN
462 symbol and an empty string. */
463 #ifdef DBX_OUTPUT_NFUN
464 DBX_OUTPUT_NFUN (asmfile
, lscope_label_name
, current_function_decl
);
466 fprintf (asmfile
, "%s\"\",%d,0,0,", ASM_STABS_OP
, N_FUN
);
467 assemble_name (asmfile
, lscope_label_name
);
469 assemble_name (asmfile
, XSTR (XEXP (DECL_RTL (current_function_decl
), 0), 0));
470 fprintf (asmfile
, "\n");
473 #endif /* DBX_DEBUGGING_INFO */
475 /* At the beginning of compilation, start writing the symbol table.
476 Initialize `typevec' and output the standard data types of C. */
479 dbxout_init (const char *input_file_name
)
481 char ltext_label_name
[100];
482 tree syms
= lang_hooks
.decls
.getdecls ();
484 asmfile
= asm_out_file
;
487 typevec
= ggc_calloc (typevec_len
, sizeof typevec
[0]);
489 /* Convert Ltext into the appropriate format for local labels in case
490 the system doesn't insert underscores in front of user generated
492 ASM_GENERATE_INTERNAL_LABEL (ltext_label_name
, "Ltext", 0);
494 /* Put the current working directory in an N_SO symbol. */
495 if (use_gnu_debug_info_extensions
)
497 if (!cwd
&& (cwd
= get_src_pwd ())
498 && (!*cwd
|| cwd
[strlen (cwd
) - 1] != '/'))
499 cwd
= concat (cwd
, FILE_NAME_JOINER
, NULL
);
502 #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
503 DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asmfile
, cwd
);
504 #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
505 fprintf (asmfile
, "%s", ASM_STABS_OP
);
506 output_quoted_string (asmfile
, cwd
);
507 fprintf (asmfile
, ",%d,0,0,", N_SO
);
508 assemble_name (asmfile
, ltext_label_name
);
509 fputc ('\n', asmfile
);
510 #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
514 #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME
515 DBX_OUTPUT_MAIN_SOURCE_FILENAME (asmfile
, input_file_name
);
516 #else /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */
517 /* We include outputting `Ltext:' here,
518 because that gives you a way to override it. */
519 /* Used to put `Ltext:' before the reference, but that loses on sun 4. */
520 fprintf (asmfile
, "%s", ASM_STABS_OP
);
521 output_quoted_string (asmfile
, input_file_name
);
522 fprintf (asmfile
, ",%d,0,0,", N_SO
);
523 assemble_name (asmfile
, ltext_label_name
);
524 fputc ('\n', asmfile
);
526 targetm
.asm_out
.internal_label (asmfile
, "Ltext", 0);
527 #endif /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */
529 #ifdef DBX_OUTPUT_GCC_MARKER
530 DBX_OUTPUT_GCC_MARKER (asmfile
);
532 /* Emit an N_OPT stab to indicate that this file was compiled by GCC. */
533 fprintf (asmfile
, "%s\"%s\",%d,0,0,0\n",
534 ASM_STABS_OP
, STABS_GCC_MARKER
, N_OPT
);
537 base_input_file
= lastfile
= input_file_name
;
539 next_type_number
= 1;
542 current_file
= xmalloc (sizeof *current_file
);
543 current_file
->next
= NULL
;
544 current_file
->file_number
= 0;
545 current_file
->next_type_number
= 1;
546 next_file_number
= 1;
547 current_file
->prev
= NULL
;
548 current_file
->bincl_status
= BINCL_NOT_REQUIRED
;
549 current_file
->pending_bincl_name
= NULL
;
552 /* Get all permanent types that have typedef names, and output them
553 all, except for those already output. Some language front ends
554 put these declarations in the top-level scope; some do not;
555 the latter are responsible for calling debug_hooks->type_decl from
556 their record_builtin_type function. */
557 dbxout_typedefs (syms
);
562 for (t
= nreverse (preinit_symbols
); t
; t
= TREE_CHAIN (t
))
563 dbxout_symbol (TREE_VALUE (t
), 0);
568 /* Output any typedef names for types described by TYPE_DECLs in SYMS. */
571 dbxout_typedefs (tree syms
)
573 for (; syms
!= NULL_TREE
; syms
= TREE_CHAIN (syms
))
575 if (TREE_CODE (syms
) == TYPE_DECL
)
577 tree type
= TREE_TYPE (syms
);
579 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
580 && COMPLETE_OR_VOID_TYPE_P (type
)
581 && ! TREE_ASM_WRITTEN (TYPE_NAME (type
)))
582 dbxout_symbol (TYPE_NAME (type
), 0);
588 /* Emit BINCL stab using given name. */
590 emit_bincl_stab (const char *name
)
592 fprintf (asmfile
, "%s", ASM_STABS_OP
);
593 output_quoted_string (asmfile
, name
);
594 fprintf (asmfile
, ",%d,0,0,0\n", N_BINCL
);
597 /* If there are pending bincls then it is time to emit all of them. */
600 emit_pending_bincls_if_required (void)
603 emit_pending_bincls ();
606 /* Emit all pending bincls. */
609 emit_pending_bincls (void)
611 struct dbx_file
*f
= current_file
;
613 /* Find first pending bincl. */
614 while (f
->bincl_status
== BINCL_PENDING
)
617 /* Now emit all bincls. */
622 if (f
->bincl_status
== BINCL_PENDING
)
624 emit_bincl_stab (f
->pending_bincl_name
);
626 /* Update file number and status. */
627 f
->file_number
= next_file_number
++;
628 f
->bincl_status
= BINCL_PROCESSED
;
630 if (f
== current_file
)
635 /* All pending bincls have been emitted. */
642 emit_pending_bincls_if_required (void) {}
645 /* Change to reading from a new source file. Generate a N_BINCL stab. */
648 dbxout_start_source_file (unsigned int line ATTRIBUTE_UNUSED
,
649 const char *filename ATTRIBUTE_UNUSED
)
652 struct dbx_file
*n
= xmalloc (sizeof *n
);
654 n
->next
= current_file
;
655 n
->next_type_number
= 1;
656 /* Do not assign file number now.
657 Delay it until we actually emit BINCL. */
660 current_file
->prev
= n
;
661 n
->bincl_status
= BINCL_PENDING
;
662 n
->pending_bincl_name
= filename
;
668 /* Revert to reading a previous source file. Generate a N_EINCL stab. */
671 dbxout_end_source_file (unsigned int line ATTRIBUTE_UNUSED
)
674 /* Emit EINCL stab only if BINCL is not pending. */
675 if (current_file
->bincl_status
== BINCL_PROCESSED
)
676 fprintf (asmfile
, "%s%d,0,0,0\n", ASM_STABN_OP
, N_EINCL
);
677 current_file
->bincl_status
= BINCL_NOT_REQUIRED
;
678 current_file
= current_file
->next
;
682 /* Handle a few odd cases that occur when trying to make PCH files work. */
685 dbxout_handle_pch (unsigned at_end
)
689 /* When using the PCH, this file will be included, so we need to output
691 dbxout_start_source_file (0, lastfile
);
693 /* The base file when using the PCH won't be the same as
694 the base file when it's being generated. */
699 /* ... and an EINCL. */
700 dbxout_end_source_file (0);
702 /* Deal with cases where 'lastfile' was never actually changed. */
703 lastfile_is_base
= lastfile
== NULL
;
707 #if defined (DBX_DEBUGGING_INFO)
708 /* Output debugging info to FILE to switch to sourcefile FILENAME. */
711 dbxout_source_file (FILE *file
, const char *filename
)
713 if (lastfile
== 0 && lastfile_is_base
)
715 lastfile
= base_input_file
;
716 lastfile_is_base
= 0;
719 if (filename
&& (lastfile
== 0 || strcmp (filename
, lastfile
)))
721 char ltext_label_name
[100];
723 ASM_GENERATE_INTERNAL_LABEL (ltext_label_name
, "Ltext",
724 source_label_number
);
725 fprintf (file
, "%s", ASM_STABS_OP
);
726 output_quoted_string (file
, filename
);
727 fprintf (asmfile
, ",%d,0,0,", N_SOL
);
728 assemble_name (asmfile
, ltext_label_name
);
729 fputc ('\n', asmfile
);
730 if (current_function_decl
!= NULL_TREE
731 && DECL_SECTION_NAME (current_function_decl
) != NULL_TREE
)
732 ; /* Don't change section amid function. */
735 if (!in_text_section () && !in_unlikely_text_section ())
738 targetm
.asm_out
.internal_label (file
, "Ltext", source_label_number
);
739 source_label_number
++;
744 /* Output a line number symbol entry for source file FILENAME and line
748 dbxout_source_line (unsigned int lineno
, const char *filename
)
750 dbxout_source_file (asmfile
, filename
);
752 #ifdef ASM_OUTPUT_SOURCE_LINE
753 dbxout_source_line_counter
+= 1;
754 ASM_OUTPUT_SOURCE_LINE (asmfile
, lineno
, dbxout_source_line_counter
);
756 fprintf (asmfile
, "%s%d,0,%d\n", ASM_STABD_OP
, N_SLINE
, lineno
);
760 /* Describe the beginning of an internal block within a function. */
763 dbxout_begin_block (unsigned int line ATTRIBUTE_UNUSED
, unsigned int n
)
765 emit_pending_bincls_if_required ();
766 targetm
.asm_out
.internal_label (asmfile
, "LBB", n
);
769 /* Describe the end line-number of an internal block within a function. */
772 dbxout_end_block (unsigned int line ATTRIBUTE_UNUSED
, unsigned int n
)
774 emit_pending_bincls_if_required ();
775 targetm
.asm_out
.internal_label (asmfile
, "LBE", n
);
778 /* Output dbx data for a function definition.
779 This includes a definition of the function name itself (a symbol),
780 definitions of the parameters (locating them in the parameter list)
781 and then output the block that makes up the function's body
782 (including all the auto variables of the function). */
785 dbxout_function_decl (tree decl
)
787 emit_pending_bincls_if_required ();
788 #ifndef DBX_FUNCTION_FIRST
789 dbxout_begin_function (decl
);
791 dbxout_block (DECL_INITIAL (decl
), 0, DECL_ARGUMENTS (decl
));
792 #ifdef DBX_OUTPUT_FUNCTION_END
793 DBX_OUTPUT_FUNCTION_END (asmfile
, decl
);
795 if (use_gnu_debug_info_extensions
796 #if defined(NO_DBX_FUNCTION_END)
797 && ! NO_DBX_FUNCTION_END
799 && targetm
.have_named_sections
)
800 dbxout_function_end ();
803 #endif /* DBX_DEBUGGING_INFO */
805 /* Debug information for a global DECL. Called from toplev.c after
806 compilation proper has finished. */
808 dbxout_global_decl (tree decl
)
810 if (TREE_CODE (decl
) == VAR_DECL
811 && ! DECL_EXTERNAL (decl
)
812 && DECL_RTL_SET_P (decl
)) /* Not necessary? */
814 int saved_tree_used
= TREE_USED (decl
);
815 TREE_USED (decl
) = 1;
816 dbxout_symbol (decl
, 0);
817 TREE_USED (decl
) = saved_tree_used
;
821 /* This is just a function-type adapter; dbxout_symbol does exactly
822 what we want but returns an int. */
824 dbxout_type_decl (tree decl
, int local
)
826 dbxout_symbol (decl
, local
);
829 /* At the end of compilation, finish writing the symbol table.
830 Unless you define DBX_OUTPUT_MAIN_SOURCE_FILE_END, the default is
834 dbxout_finish (const char *filename ATTRIBUTE_UNUSED
)
836 #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END
837 DBX_OUTPUT_MAIN_SOURCE_FILE_END (asmfile
, filename
);
838 #endif /* DBX_OUTPUT_MAIN_SOURCE_FILE_END */
843 /* Output the index of a type. */
846 dbxout_type_index (tree type
)
848 #ifndef DBX_USE_BINCL
849 fprintf (asmfile
, "%d", TYPE_SYMTAB_ADDRESS (type
));
852 struct typeinfo
*t
= &typevec
[TYPE_SYMTAB_ADDRESS (type
)];
853 fprintf (asmfile
, "(%d,%d)", t
->file_number
, t
->type_number
);
858 #if DBX_CONTIN_LENGTH > 0
859 /* Continue a symbol-description that gets too big.
860 End one symbol table entry with a double-backslash
861 and start a new one, eventually producing something like
862 .stabs "start......\\",code,0,value
863 .stabs "...rest",code,0,value */
866 dbxout_continue (void)
868 emit_pending_bincls_if_required ();
869 #ifdef DBX_CONTIN_CHAR
870 fprintf (asmfile
, "%c", DBX_CONTIN_CHAR
);
872 fprintf (asmfile
, "\\\\");
874 dbxout_finish_symbol (NULL_TREE
);
875 fprintf (asmfile
, "%s\"", ASM_STABS_OP
);
876 current_sym_nchars
= 0;
878 #endif /* DBX_CONTIN_LENGTH > 0 */
880 /* Subroutine of `dbxout_type'. Output the type fields of TYPE.
881 This must be a separate function because anonymous unions require
885 dbxout_type_fields (tree type
)
889 /* Output the name, type, position (in bits), size (in bits) of each
890 field that we can support. */
891 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
893 /* If one of the nodes is an error_mark or its type is then
895 if (tem
== error_mark_node
|| TREE_TYPE (tem
) == error_mark_node
)
898 /* Omit here local type decls until we know how to support them. */
899 if (TREE_CODE (tem
) == TYPE_DECL
900 /* Omit fields whose position or size are variable or too large to
902 || (TREE_CODE (tem
) == FIELD_DECL
903 && (! host_integerp (bit_position (tem
), 0)
905 || ! host_integerp (DECL_SIZE (tem
), 1)))
906 /* Omit here the nameless fields that are used to skip bits. */
907 || DECL_IGNORED_P (tem
))
910 else if (TREE_CODE (tem
) != CONST_DECL
)
912 /* Continue the line if necessary,
913 but not before the first field. */
914 if (tem
!= TYPE_FIELDS (type
))
919 fprintf (asmfile
, "%s:", IDENTIFIER_POINTER (DECL_NAME (tem
)));
920 CHARS (2 + IDENTIFIER_LENGTH (DECL_NAME (tem
)));
924 fprintf (asmfile
, ":");
928 if (use_gnu_debug_info_extensions
929 && (TREE_PRIVATE (tem
) || TREE_PROTECTED (tem
)
930 || TREE_CODE (tem
) != FIELD_DECL
))
932 have_used_extensions
= 1;
934 putc ((TREE_PRIVATE (tem
) ? '0'
935 : TREE_PROTECTED (tem
) ? '1' : '2'),
940 dbxout_type ((TREE_CODE (tem
) == FIELD_DECL
941 && DECL_BIT_FIELD_TYPE (tem
))
942 ? DECL_BIT_FIELD_TYPE (tem
) : TREE_TYPE (tem
), 0);
944 if (TREE_CODE (tem
) == VAR_DECL
)
946 if (TREE_STATIC (tem
) && use_gnu_debug_info_extensions
)
948 tree name
= DECL_ASSEMBLER_NAME (tem
);
950 have_used_extensions
= 1;
951 fprintf (asmfile
, ":%s;", IDENTIFIER_POINTER (name
));
952 CHARS (IDENTIFIER_LENGTH (name
) + 2);
956 /* If TEM is non-static, GDB won't understand it. */
957 fprintf (asmfile
, ",0,0;");
964 print_wide_int (int_bit_position (tem
));
966 print_wide_int (tree_low_cst (DECL_SIZE (tem
), 1));
974 /* Subroutine of `dbxout_type_methods'. Output debug info about the
975 method described DECL. DEBUG_NAME is an encoding of the method's
976 type signature. ??? We may be able to do without DEBUG_NAME altogether
980 dbxout_type_method_1 (tree decl
, const char *debug_name
)
984 if (TREE_CODE (TREE_TYPE (decl
)) == FUNCTION_TYPE
)
986 else /* it's a METHOD_TYPE. */
988 tree firstarg
= TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl
)));
989 /* A for normal functions.
990 B for `const' member functions.
991 C for `volatile' member functions.
992 D for `const volatile' member functions. */
993 if (TYPE_READONLY (TREE_TYPE (firstarg
)))
995 if (TYPE_VOLATILE (TREE_TYPE (firstarg
)))
998 if (DECL_VINDEX (decl
))
1004 fprintf (asmfile
, ":%s;%c%c%c", debug_name
,
1005 TREE_PRIVATE (decl
) ? '0'
1006 : TREE_PROTECTED (decl
) ? '1' : '2', c1
, c2
);
1007 CHARS (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl
)) + 6
1008 - (debug_name
- IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
))));
1010 if (DECL_VINDEX (decl
) && host_integerp (DECL_VINDEX (decl
), 0))
1012 print_wide_int (tree_low_cst (DECL_VINDEX (decl
), 0));
1013 putc (';', asmfile
);
1015 dbxout_type (DECL_CONTEXT (decl
), 0);
1016 fprintf (asmfile
, ";");
1021 /* Subroutine of `dbxout_type'. Output debug info about the methods defined
1025 dbxout_type_methods (tree type
)
1027 /* C++: put out the method names and their parameter lists */
1028 tree methods
= TYPE_METHODS (type
);
1032 char formatted_type_identifier_length
[16];
1033 int type_identifier_length
;
1035 if (methods
== NULL_TREE
)
1038 type_encoding
= DECL_NAME (TYPE_NAME (type
));
1041 /* C++: Template classes break some assumptions made by this code about
1042 the class names, constructor names, and encodings for assembler
1043 label names. For now, disable output of dbx info for them. */
1045 const char *ptr
= IDENTIFIER_POINTER (type_encoding
);
1046 /* This should use index. (mrs) */
1047 while (*ptr
&& *ptr
!= '<') ptr
++;
1058 type_identifier_length
= IDENTIFIER_LENGTH (type_encoding
);
1060 sprintf (formatted_type_identifier_length
, "%d", type_identifier_length
);
1062 if (TREE_CODE (methods
) != TREE_VEC
)
1064 else if (TREE_VEC_ELT (methods
, 0) != NULL_TREE
)
1065 fndecl
= TREE_VEC_ELT (methods
, 0);
1067 fndecl
= TREE_VEC_ELT (methods
, 1);
1071 int need_prefix
= 1;
1073 /* Group together all the methods for the same operation.
1074 These differ in the types of the arguments. */
1075 for (last
= NULL_TREE
;
1076 fndecl
&& (last
== NULL_TREE
|| DECL_NAME (fndecl
) == DECL_NAME (last
));
1077 fndecl
= TREE_CHAIN (fndecl
))
1078 /* Output the name of the field (after overloading), as
1079 well as the name of the field before overloading, along
1080 with its parameter list */
1082 /* This is the "mangled" name of the method.
1083 It encodes the argument types. */
1084 const char *debug_name
;
1086 /* Skip methods that aren't FUNCTION_DECLs. (In C++, these
1087 include TEMPLATE_DECLs.) The debugger doesn't know what
1088 to do with such entities anyhow. */
1089 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
1092 debug_name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl
));
1098 /* Also ignore abstract methods; those are only interesting to
1099 the DWARF backends. */
1100 if (DECL_IGNORED_P (fndecl
) || DECL_ABSTRACT (fndecl
))
1103 /* Redundantly output the plain name, since that's what gdb
1107 tree name
= DECL_NAME (fndecl
);
1108 fprintf (asmfile
, "%s::", IDENTIFIER_POINTER (name
));
1109 CHARS (IDENTIFIER_LENGTH (name
) + 2);
1113 dbxout_type (TREE_TYPE (fndecl
), 0);
1115 dbxout_type_method_1 (fndecl
, debug_name
);
1119 putc (';', asmfile
);
1125 /* Emit a "range" type specification, which has the form:
1126 "r<index type>;<lower bound>;<upper bound>;".
1127 TYPE is an INTEGER_TYPE. */
1130 dbxout_range_type (tree type
)
1132 fprintf (asmfile
, "r");
1133 if (TREE_TYPE (type
))
1134 dbxout_type (TREE_TYPE (type
), 0);
1135 else if (TREE_CODE (type
) != INTEGER_TYPE
)
1136 dbxout_type (type
, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */
1139 /* Traditionally, we made sure 'int' was type 1, and builtin types
1140 were defined to be sub-ranges of int. Unfortunately, this
1141 does not allow us to distinguish true sub-ranges from integer
1142 types. So, instead we define integer (non-sub-range) types as
1143 sub-ranges of themselves. This matters for Chill. If this isn't
1144 a subrange type, then we want to define it in terms of itself.
1145 However, in C, this may be an anonymous integer type, and we don't
1146 want to emit debug info referring to it. Just calling
1147 dbxout_type_index won't work anyways, because the type hasn't been
1148 defined yet. We make this work for both cases by checked to see
1149 whether this is a defined type, referring to it if it is, and using
1151 if (TYPE_SYMTAB_ADDRESS (type
) != 0)
1152 dbxout_type_index (type
);
1154 dbxout_type_index (integer_type_node
);
1157 if (TYPE_MIN_VALUE (type
) != 0
1158 && host_integerp (TYPE_MIN_VALUE (type
), 0))
1160 putc (';', asmfile
);
1162 if (print_int_cst_bounds_in_octal_p (type
))
1163 print_int_cst_octal (TYPE_MIN_VALUE (type
));
1165 print_wide_int (tree_low_cst (TYPE_MIN_VALUE (type
), 0));
1169 fprintf (asmfile
, ";0");
1173 if (TYPE_MAX_VALUE (type
) != 0
1174 && host_integerp (TYPE_MAX_VALUE (type
), 0))
1176 putc (';', asmfile
);
1178 if (print_int_cst_bounds_in_octal_p (type
))
1179 print_int_cst_octal (TYPE_MAX_VALUE (type
));
1181 print_wide_int (tree_low_cst (TYPE_MAX_VALUE (type
), 0));
1182 putc (';', asmfile
);
1187 fprintf (asmfile
, ";-1;");
1193 /* Output a reference to a type. If the type has not yet been
1194 described in the dbx output, output its definition now.
1195 For a type already defined, just refer to its definition
1196 using the type number.
1198 If FULL is nonzero, and the type has been described only with
1199 a forward-reference, output the definition now.
1200 If FULL is zero in this case, just refer to the forward-reference
1201 using the number previously allocated. */
1204 dbxout_type (tree type
, int full
)
1208 static int anonymous_type_number
= 0;
1210 if (TREE_CODE (type
) == VECTOR_TYPE
)
1211 /* The frontend feeds us a representation for the vector as a struct
1212 containing an array. Pull out the array type. */
1213 type
= TREE_TYPE (TYPE_FIELDS (TYPE_DEBUG_REPRESENTATION_TYPE (type
)));
1215 /* If there was an input error and we don't really have a type,
1216 avoid crashing and write something that is at least valid
1217 by assuming `int'. */
1218 if (type
== error_mark_node
)
1219 type
= integer_type_node
;
1222 if (TYPE_NAME (type
)
1223 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1224 && TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type
)))
1228 /* Try to find the "main variant" with the same name. */
1229 if (TYPE_NAME (type
) && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1230 && DECL_ORIGINAL_TYPE (TYPE_NAME (type
)))
1231 main_variant
= TREE_TYPE (TYPE_NAME (type
));
1233 main_variant
= TYPE_MAIN_VARIANT (type
);
1235 /* If we are not using extensions, stabs does not distinguish const and
1236 volatile, so there is no need to make them separate types. */
1237 if (!use_gnu_debug_info_extensions
)
1238 type
= main_variant
;
1240 if (TYPE_SYMTAB_ADDRESS (type
) == 0)
1242 /* Type has no dbx number assigned. Assign next available number. */
1243 TYPE_SYMTAB_ADDRESS (type
) = next_type_number
++;
1245 /* Make sure type vector is long enough to record about this type. */
1247 if (next_type_number
== typevec_len
)
1250 = ggc_realloc (typevec
, (typevec_len
* 2 * sizeof typevec
[0]));
1251 memset (typevec
+ typevec_len
, 0, typevec_len
* sizeof typevec
[0]);
1255 #ifdef DBX_USE_BINCL
1256 emit_pending_bincls_if_required ();
1257 typevec
[TYPE_SYMTAB_ADDRESS (type
)].file_number
1258 = current_file
->file_number
;
1259 typevec
[TYPE_SYMTAB_ADDRESS (type
)].type_number
1260 = current_file
->next_type_number
++;
1264 if (flag_debug_only_used_symbols
)
1266 if ((TREE_CODE (type
) == RECORD_TYPE
1267 || TREE_CODE (type
) == UNION_TYPE
1268 || TREE_CODE (type
) == QUAL_UNION_TYPE
1269 || TREE_CODE (type
) == ENUMERAL_TYPE
)
1270 && TYPE_STUB_DECL (type
)
1271 && TREE_CODE_CLASS (TREE_CODE (TYPE_STUB_DECL (type
))) == 'd'
1272 && ! DECL_IGNORED_P (TYPE_STUB_DECL (type
)))
1273 debug_queue_symbol (TYPE_STUB_DECL (type
));
1274 else if (TYPE_NAME (type
)
1275 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
1276 debug_queue_symbol (TYPE_NAME (type
));
1279 /* Output the number of this type, to refer to it. */
1280 dbxout_type_index (type
);
1282 #ifdef DBX_TYPE_DEFINED
1283 if (DBX_TYPE_DEFINED (type
))
1287 /* If this type's definition has been output or is now being output,
1290 switch (typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
)
1295 /* If we have already had a cross reference,
1296 and either that's all we want or that's the best we could do,
1297 don't repeat the cross reference.
1298 Sun dbx crashes if we do. */
1299 if (! full
|| !COMPLETE_TYPE_P (type
)
1300 /* No way in DBX fmt to describe a variable size. */
1301 || ! host_integerp (TYPE_SIZE (type
), 1))
1309 /* For systems where dbx output does not allow the `=xsNAME:' syntax,
1310 leave the type-number completely undefined rather than output
1311 a cross-reference. If we have already used GNU debug info extensions,
1312 then it is OK to output a cross reference. This is necessary to get
1313 proper C++ debug output. */
1314 if ((TREE_CODE (type
) == RECORD_TYPE
|| TREE_CODE (type
) == UNION_TYPE
1315 || TREE_CODE (type
) == QUAL_UNION_TYPE
1316 || TREE_CODE (type
) == ENUMERAL_TYPE
)
1317 && ! use_gnu_debug_info_extensions
)
1318 /* We must use the same test here as we use twice below when deciding
1319 whether to emit a cross-reference. */
1320 if ((TYPE_NAME (type
) != 0
1321 && ! (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1322 && DECL_IGNORED_P (TYPE_NAME (type
)))
1324 || !COMPLETE_TYPE_P (type
)
1325 /* No way in DBX fmt to describe a variable size. */
1326 || ! host_integerp (TYPE_SIZE (type
), 1))
1328 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_XREF
;
1333 /* Output a definition now. */
1335 fprintf (asmfile
, "=");
1338 /* Mark it as defined, so that if it is self-referent
1339 we will not get into an infinite recursion of definitions. */
1341 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_DEFINED
;
1343 /* If this type is a variant of some other, hand off. Types with
1344 different names are usefully distinguished. We only distinguish
1345 cv-qualified types if we're using extensions. */
1346 if (TYPE_READONLY (type
) > TYPE_READONLY (main_variant
))
1348 putc ('k', asmfile
);
1350 dbxout_type (build_type_variant (type
, 0, TYPE_VOLATILE (type
)), 0);
1353 else if (TYPE_VOLATILE (type
) > TYPE_VOLATILE (main_variant
))
1355 putc ('B', asmfile
);
1357 dbxout_type (build_type_variant (type
, TYPE_READONLY (type
), 0), 0);
1360 else if (main_variant
!= TYPE_MAIN_VARIANT (type
))
1362 if (flag_debug_only_used_symbols
)
1364 tree orig_type
= DECL_ORIGINAL_TYPE (TYPE_NAME (type
));
1366 if ((TREE_CODE (orig_type
) == RECORD_TYPE
1367 || TREE_CODE (orig_type
) == UNION_TYPE
1368 || TREE_CODE (orig_type
) == QUAL_UNION_TYPE
1369 || TREE_CODE (orig_type
) == ENUMERAL_TYPE
)
1370 && TYPE_STUB_DECL (orig_type
)
1371 && ! DECL_IGNORED_P (TYPE_STUB_DECL (orig_type
)))
1372 debug_queue_symbol (TYPE_STUB_DECL (orig_type
));
1374 /* 'type' is a typedef; output the type it refers to. */
1375 dbxout_type (DECL_ORIGINAL_TYPE (TYPE_NAME (type
)), 0);
1378 /* else continue. */
1380 switch (TREE_CODE (type
))
1384 /* For a void type, just define it as itself; ie, "5=5".
1385 This makes us consider it defined
1386 without saying what it is. The debugger will make it
1387 a void type when the reference is seen, and nothing will
1388 ever override that default. */
1389 dbxout_type_index (type
);
1393 if (type
== char_type_node
&& ! TYPE_UNSIGNED (type
))
1395 /* Output the type `char' as a subrange of itself!
1396 I don't understand this definition, just copied it
1397 from the output of pcc.
1398 This used to use `r2' explicitly and we used to
1399 take care to make sure that `char' was type number 2. */
1400 fprintf (asmfile
, "r");
1402 dbxout_type_index (type
);
1403 fprintf (asmfile
, ";0;127;");
1407 /* If this is a subtype of another integer type, always prefer to
1408 write it as a subtype. */
1409 else if (TREE_TYPE (type
) != 0
1410 && TREE_CODE (TREE_TYPE (type
)) == INTEGER_TYPE
)
1412 /* If the size is non-standard, say what it is if we can use
1415 if (use_gnu_debug_info_extensions
1416 && TYPE_PRECISION (type
) != TYPE_PRECISION (integer_type_node
))
1418 have_used_extensions
= 1;
1419 fprintf (asmfile
, "@s%d;", TYPE_PRECISION (type
));
1423 dbxout_range_type (type
);
1428 /* If the size is non-standard, say what it is if we can use
1431 if (use_gnu_debug_info_extensions
1432 && TYPE_PRECISION (type
) != TYPE_PRECISION (integer_type_node
))
1434 have_used_extensions
= 1;
1435 fprintf (asmfile
, "@s%d;", TYPE_PRECISION (type
));
1439 if (print_int_cst_bounds_in_octal_p (type
))
1441 fprintf (asmfile
, "r");
1444 /* If this type derives from another type, output type index of
1445 parent type. This is particularly important when parent type
1446 is an enumerated type, because not generating the parent type
1447 index would transform the definition of this enumerated type
1448 into a plain unsigned type. */
1449 if (TREE_TYPE (type
) != 0)
1450 dbxout_type_index (TREE_TYPE (type
));
1452 dbxout_type_index (type
);
1454 fprintf (asmfile
, ";");
1456 print_int_cst_octal (TYPE_MIN_VALUE (type
));
1457 fprintf (asmfile
, ";");
1459 print_int_cst_octal (TYPE_MAX_VALUE (type
));
1460 fprintf (asmfile
, ";");
1465 /* Output other integer types as subranges of `int'. */
1466 dbxout_range_type (type
);
1472 /* This used to say `r1' and we used to take care
1473 to make sure that `int' was type number 1. */
1474 fprintf (asmfile
, "r");
1476 dbxout_type_index (integer_type_node
);
1477 putc (';', asmfile
);
1479 print_wide_int (int_size_in_bytes (type
));
1480 fputs (";0;", asmfile
);
1485 if (use_gnu_debug_info_extensions
)
1487 have_used_extensions
= 1;
1488 fputs ("@s", asmfile
);
1490 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1491 fputs (";-20;", asmfile
);
1496 /* Output the type `char' as a subrange of itself.
1497 That is what pcc seems to do. */
1498 fprintf (asmfile
, "r");
1500 dbxout_type_index (char_type_node
);
1501 fprintf (asmfile
, ";0;%d;", TYPE_UNSIGNED (type
) ? 255 : 127);
1507 if (use_gnu_debug_info_extensions
)
1509 have_used_extensions
= 1;
1510 fputs ("@s", asmfile
);
1512 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1513 fputs (";-16;", asmfile
);
1516 else /* Define as enumeral type (False, True) */
1518 fprintf (asmfile
, "eFalse:0,True:1,;");
1524 putc ('d', asmfile
);
1526 dbxout_type (TREE_TYPE (type
), 0);
1530 /* Differs from the REAL_TYPE by its new data type number.
1531 R3 is NF_COMPLEX. We don't try to use any of the other NF_*
1532 codes since gdb doesn't care anyway. */
1534 if (TREE_CODE (TREE_TYPE (type
)) == REAL_TYPE
)
1536 fputs ("R3;", asmfile
);
1538 print_wide_int (2 * int_size_in_bytes (TREE_TYPE (type
)));
1539 fputs (";0;", asmfile
);
1544 /* Output a complex integer type as a structure,
1545 pending some other way to do it. */
1546 putc ('s', asmfile
);
1548 print_wide_int (int_size_in_bytes (type
));
1549 fprintf (asmfile
, "real:");
1552 dbxout_type (TREE_TYPE (type
), 0);
1553 fprintf (asmfile
, ",0,%d;", TYPE_PRECISION (TREE_TYPE (type
)));
1555 fprintf (asmfile
, "imag:");
1557 dbxout_type (TREE_TYPE (type
), 0);
1558 fprintf (asmfile
, ",%d,%d;;", TYPE_PRECISION (TREE_TYPE (type
)),
1559 TYPE_PRECISION (TREE_TYPE (type
)));
1565 if (use_gnu_debug_info_extensions
)
1567 have_used_extensions
= 1;
1568 fputs ("@s", asmfile
);
1570 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1571 putc (';', asmfile
);
1574 /* Check if a bitstring type, which in Chill is
1575 different from a [power]set. */
1576 if (TYPE_STRING_FLAG (type
))
1578 fprintf (asmfile
, "@S;");
1582 putc ('S', asmfile
);
1584 dbxout_type (TYPE_DOMAIN (type
), 0);
1588 /* Make arrays of packed bits look like bitstrings for chill. */
1589 if (TYPE_PACKED (type
) && use_gnu_debug_info_extensions
)
1591 have_used_extensions
= 1;
1592 fputs ("@s", asmfile
);
1594 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1595 fprintf (asmfile
, ";@S;S");
1597 dbxout_type (TYPE_DOMAIN (type
), 0);
1601 /* Output "a" followed by a range type definition
1602 for the index type of the array
1603 followed by a reference to the target-type.
1604 ar1;0;N;M for a C array of type M and size N+1. */
1605 /* Check if a character string type, which in Chill is
1606 different from an array of characters. */
1607 if (TYPE_STRING_FLAG (type
) && use_gnu_debug_info_extensions
)
1609 have_used_extensions
= 1;
1610 fprintf (asmfile
, "@S;");
1613 tem
= TYPE_DOMAIN (type
);
1616 fprintf (asmfile
, "ar");
1618 dbxout_type_index (integer_type_node
);
1619 fprintf (asmfile
, ";0;-1;");
1624 fprintf (asmfile
, "a");
1626 dbxout_range_type (tem
);
1629 dbxout_type (TREE_TYPE (type
), 0);
1634 case QUAL_UNION_TYPE
:
1636 tree binfo
= TYPE_BINFO (type
);
1638 /* Output a structure type. We must use the same test here as we
1639 use in the DBX_NO_XREFS case above. */
1640 if ((TYPE_NAME (type
) != 0
1641 && ! (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1642 && DECL_IGNORED_P (TYPE_NAME (type
)))
1644 || !COMPLETE_TYPE_P (type
)
1645 /* No way in DBX fmt to describe a variable size. */
1646 || ! host_integerp (TYPE_SIZE (type
), 1))
1648 /* If the type is just a cross reference, output one
1649 and mark the type as partially described.
1650 If it later becomes defined, we will output
1651 its real definition.
1652 If the type has a name, don't nest its definition within
1653 another type's definition; instead, output an xref
1654 and let the definition come when the name is defined. */
1655 fputs ((TREE_CODE (type
) == RECORD_TYPE
) ? "xs" : "xu", asmfile
);
1657 #if 0 /* This assertion is legitimately false in C++. */
1658 /* We shouldn't be outputting a reference to a type before its
1659 definition unless the type has a tag name.
1660 A typedef name without a tag name should be impossible. */
1661 if (TREE_CODE (TYPE_NAME (type
)) != IDENTIFIER_NODE
)
1664 if (TYPE_NAME (type
) != 0)
1665 dbxout_type_name (type
);
1668 fprintf (asmfile
, "$$%d", anonymous_type_number
++);
1672 fprintf (asmfile
, ":");
1674 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_XREF
;
1678 /* Identify record or union, and print its size. */
1679 putc (((TREE_CODE (type
) == RECORD_TYPE
) ? 's' : 'u'), asmfile
);
1681 print_wide_int (int_size_in_bytes (type
));
1687 VEC (tree
) *accesses
= BINFO_BASE_ACCESSES (binfo
);
1689 if (use_gnu_debug_info_extensions
)
1691 if (BINFO_N_BASE_BINFOS (binfo
))
1693 have_used_extensions
= 1;
1694 fprintf (asmfile
, "!%u,", BINFO_N_BASE_BINFOS (binfo
));
1698 for (i
= 0; BINFO_BASE_ITERATE (binfo
, i
, child
); i
++)
1700 tree access
= (accesses
? VEC_index (tree
, accesses
, i
)
1701 : access_public_node
);
1703 if (use_gnu_debug_info_extensions
)
1705 have_used_extensions
= 1;
1706 putc (BINFO_VIRTUAL_P (child
) ? '1' : '0', asmfile
);
1707 putc (access
== access_public_node
? '2' :
1708 (access
== access_protected_node
? '1' :'0'),
1711 if (BINFO_VIRTUAL_P (child
)
1712 && strcmp (lang_hooks
.name
, "GNU C++") == 0)
1713 /* For a virtual base, print the (negative)
1714 offset within the vtable where we must look
1715 to find the necessary adjustment. */
1717 (tree_low_cst (BINFO_VPTR_FIELD (child
), 0)
1720 print_wide_int (tree_low_cst (BINFO_OFFSET (child
), 0)
1722 putc (',', asmfile
);
1724 dbxout_type (BINFO_TYPE (child
), 0);
1725 putc (';', asmfile
);
1730 /* Print out the base class information with
1731 fields which have the same names at the types
1733 dbxout_type_name (BINFO_TYPE (child
));
1734 putc (':', asmfile
);
1736 dbxout_type (BINFO_TYPE (child
), full
);
1737 putc (',', asmfile
);
1739 print_wide_int (tree_low_cst (BINFO_OFFSET (child
), 0)
1741 putc (',', asmfile
);
1744 (tree_low_cst (TYPE_SIZE (BINFO_TYPE (child
)), 0)
1746 putc (';', asmfile
);
1753 /* Write out the field declarations. */
1754 dbxout_type_fields (type
);
1755 if (use_gnu_debug_info_extensions
&& TYPE_METHODS (type
) != NULL_TREE
)
1757 have_used_extensions
= 1;
1758 dbxout_type_methods (type
);
1761 putc (';', asmfile
);
1764 if (use_gnu_debug_info_extensions
&& TREE_CODE (type
) == RECORD_TYPE
1765 /* Avoid the ~ if we don't really need it--it confuses dbx. */
1766 && TYPE_VFIELD (type
))
1768 have_used_extensions
= 1;
1770 /* Tell GDB+ that it may keep reading. */
1771 putc ('~', asmfile
);
1774 /* We need to write out info about what field this class
1775 uses as its "main" vtable pointer field, because if this
1776 field is inherited from a base class, GDB cannot necessarily
1777 figure out which field it's using in time. */
1778 if (TYPE_VFIELD (type
))
1780 putc ('%', asmfile
);
1782 dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type
)), 0);
1785 putc (';', asmfile
);
1791 /* We must use the same test here as we use in the DBX_NO_XREFS case
1792 above. We simplify it a bit since an enum will never have a variable
1794 if ((TYPE_NAME (type
) != 0
1795 && ! (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1796 && DECL_IGNORED_P (TYPE_NAME (type
)))
1798 || !COMPLETE_TYPE_P (type
))
1800 fprintf (asmfile
, "xe");
1802 dbxout_type_name (type
);
1803 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_XREF
;
1804 putc (':', asmfile
);
1808 if (use_gnu_debug_info_extensions
1809 && TYPE_PRECISION (type
) != TYPE_PRECISION (integer_type_node
))
1811 fprintf (asmfile
, "@s%d;", TYPE_PRECISION (type
));
1815 putc ('e', asmfile
);
1817 for (tem
= TYPE_VALUES (type
); tem
; tem
= TREE_CHAIN (tem
))
1819 fprintf (asmfile
, "%s:", IDENTIFIER_POINTER (TREE_PURPOSE (tem
)));
1820 CHARS (IDENTIFIER_LENGTH (TREE_PURPOSE (tem
)) + 1);
1821 if (TREE_INT_CST_HIGH (TREE_VALUE (tem
)) == 0)
1822 print_wide_int (TREE_INT_CST_LOW (TREE_VALUE (tem
)));
1823 else if (TREE_INT_CST_HIGH (TREE_VALUE (tem
)) == -1
1824 && (HOST_WIDE_INT
) TREE_INT_CST_LOW (TREE_VALUE (tem
)) < 0)
1825 print_wide_int (TREE_INT_CST_LOW (TREE_VALUE (tem
)));
1827 print_int_cst_octal (TREE_VALUE (tem
));
1829 putc (',', asmfile
);
1831 if (TREE_CHAIN (tem
) != 0)
1835 putc (';', asmfile
);
1840 putc ('*', asmfile
);
1842 dbxout_type (TREE_TYPE (type
), 0);
1846 if (use_gnu_debug_info_extensions
)
1848 have_used_extensions
= 1;
1849 putc ('#', asmfile
);
1852 /* Write the argument types out longhand. */
1853 dbxout_type (TYPE_METHOD_BASETYPE (type
), 0);
1854 putc (',', asmfile
);
1856 dbxout_type (TREE_TYPE (type
), 0);
1857 dbxout_args (TYPE_ARG_TYPES (type
));
1858 putc (';', asmfile
);
1862 /* Treat it as a function type. */
1863 dbxout_type (TREE_TYPE (type
), 0);
1867 if (use_gnu_debug_info_extensions
)
1869 have_used_extensions
= 1;
1870 putc ('@', asmfile
);
1872 dbxout_type (TYPE_OFFSET_BASETYPE (type
), 0);
1873 putc (',', asmfile
);
1875 dbxout_type (TREE_TYPE (type
), 0);
1878 /* Should print as an int, because it is really just an offset. */
1879 dbxout_type (integer_type_node
, 0);
1882 case REFERENCE_TYPE
:
1883 if (use_gnu_debug_info_extensions
)
1884 have_used_extensions
= 1;
1885 putc (use_gnu_debug_info_extensions
? '&' : '*', asmfile
);
1887 dbxout_type (TREE_TYPE (type
), 0);
1891 putc ('f', asmfile
);
1893 dbxout_type (TREE_TYPE (type
), 0);
1901 /* Return nonzero if the given type represents an integer whose bounds
1902 should be printed in octal format. */
1905 print_int_cst_bounds_in_octal_p (tree type
)
1907 /* If we can use GDB extensions and the size is wider than a long
1908 (the size used by GDB to read them) or we may have trouble writing
1909 the bounds the usual way, write them in octal. Note the test is for
1910 the *target's* size of "long", not that of the host. The host test
1911 is just to make sure we can write it out in case the host wide int
1912 is narrower than the target "long".
1914 For unsigned types, we use octal if they are the same size or larger.
1915 This is because we print the bounds as signed decimal, and hence they
1916 can't span same size unsigned types. */
1918 if (use_gnu_debug_info_extensions
1919 && TYPE_MIN_VALUE (type
) != 0
1920 && TREE_CODE (TYPE_MIN_VALUE (type
)) == INTEGER_CST
1921 && TYPE_MAX_VALUE (type
) != 0
1922 && TREE_CODE (TYPE_MAX_VALUE (type
)) == INTEGER_CST
1923 && (TYPE_PRECISION (type
) > TYPE_PRECISION (integer_type_node
)
1924 || ((TYPE_PRECISION (type
) == TYPE_PRECISION (integer_type_node
))
1925 && TYPE_UNSIGNED (type
))
1926 || TYPE_PRECISION (type
) > HOST_BITS_PER_WIDE_INT
1927 || (TYPE_PRECISION (type
) == HOST_BITS_PER_WIDE_INT
1928 && TYPE_UNSIGNED (type
))))
1934 /* Print the value of integer constant C, in octal,
1935 handling double precision. */
1938 print_int_cst_octal (tree c
)
1940 unsigned HOST_WIDE_INT high
= TREE_INT_CST_HIGH (c
);
1941 unsigned HOST_WIDE_INT low
= TREE_INT_CST_LOW (c
);
1942 int excess
= (3 - (HOST_BITS_PER_WIDE_INT
% 3));
1943 unsigned int width
= TYPE_PRECISION (TREE_TYPE (c
));
1945 /* GDB wants constants with no extra leading "1" bits, so
1946 we need to remove any sign-extension that might be
1948 if (width
== HOST_BITS_PER_WIDE_INT
* 2)
1950 else if (width
> HOST_BITS_PER_WIDE_INT
)
1951 high
&= (((HOST_WIDE_INT
) 1 << (width
- HOST_BITS_PER_WIDE_INT
)) - 1);
1952 else if (width
== HOST_BITS_PER_WIDE_INT
)
1955 high
= 0, low
&= (((HOST_WIDE_INT
) 1 << width
) - 1);
1957 fprintf (asmfile
, "0");
1962 print_octal (high
, HOST_BITS_PER_WIDE_INT
/ 3);
1963 print_octal (low
, HOST_BITS_PER_WIDE_INT
/ 3);
1967 unsigned HOST_WIDE_INT beg
= high
>> excess
;
1968 unsigned HOST_WIDE_INT middle
1969 = ((high
& (((HOST_WIDE_INT
) 1 << excess
) - 1)) << (3 - excess
)
1970 | (low
>> (HOST_BITS_PER_WIDE_INT
/ 3 * 3)));
1971 unsigned HOST_WIDE_INT end
1972 = low
& (((unsigned HOST_WIDE_INT
) 1
1973 << (HOST_BITS_PER_WIDE_INT
/ 3 * 3))
1976 fprintf (asmfile
, "%o%01o", (int) beg
, (int) middle
);
1978 print_octal (end
, HOST_BITS_PER_WIDE_INT
/ 3);
1983 print_octal (unsigned HOST_WIDE_INT value
, int digits
)
1987 for (i
= digits
- 1; i
>= 0; i
--)
1988 fprintf (asmfile
, "%01o", (int) ((value
>> (3 * i
)) & 7));
1993 /* Output C in decimal while adjusting the number of digits written. */
1996 print_wide_int (HOST_WIDE_INT c
)
2000 fprintf (asmfile
, HOST_WIDE_INT_PRINT_DEC
, c
);
2011 /* Output the name of type TYPE, with no punctuation.
2012 Such names can be set up either by typedef declarations
2013 or by struct, enum and union tags. */
2016 dbxout_type_name (tree type
)
2019 if (TYPE_NAME (type
) == 0)
2021 if (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
)
2023 t
= TYPE_NAME (type
);
2025 else if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2027 t
= DECL_NAME (TYPE_NAME (type
));
2032 fprintf (asmfile
, "%s", IDENTIFIER_POINTER (t
));
2033 CHARS (IDENTIFIER_LENGTH (t
));
2036 /* Output leading leading struct or class names needed for qualifying
2037 type whose scope is limited to a struct or class. */
2040 dbxout_class_name_qualifiers (tree decl
)
2042 tree context
= decl_type_context (decl
);
2044 if (context
!= NULL_TREE
2045 && TREE_CODE(context
) == RECORD_TYPE
2046 && TYPE_NAME (context
) != 0
2047 && (TREE_CODE (TYPE_NAME (context
)) == IDENTIFIER_NODE
2048 || (DECL_NAME (TYPE_NAME (context
)) != 0)))
2050 tree name
= TYPE_NAME (context
);
2052 emit_pending_bincls_if_required ();
2054 if (TREE_CODE (name
) == TYPE_DECL
)
2056 dbxout_class_name_qualifiers (name
);
2057 name
= DECL_NAME (name
);
2059 fprintf (asmfile
, "%s::", IDENTIFIER_POINTER (name
));
2060 CHARS (IDENTIFIER_LENGTH (name
) + 2);
2064 /* Output a .stabs for the symbol defined by DECL,
2065 which must be a ..._DECL node in the normal namespace.
2066 It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL.
2067 LOCAL is nonzero if the scope is less than the entire file.
2068 Return 1 if a stabs might have been emitted. */
2071 dbxout_symbol (tree decl
, int local ATTRIBUTE_UNUSED
)
2073 tree type
= TREE_TYPE (decl
);
2074 tree context
= NULL_TREE
;
2077 /* "Intercept" dbxout_symbol() calls like we do all debug_hooks. */
2080 /* Ignore nameless syms, but don't ignore type tags. */
2082 if ((DECL_NAME (decl
) == 0 && TREE_CODE (decl
) != TYPE_DECL
)
2083 || DECL_IGNORED_P (decl
))
2084 DBXOUT_DECR_NESTING_AND_RETURN (0);
2086 /* If we are to generate only the symbols actually used then such
2087 symbol nodees are flagged with TREE_USED. Ignore any that
2088 aren't flaged as TREE_USED. */
2090 if (flag_debug_only_used_symbols
2091 && (!TREE_USED (decl
)
2092 && (TREE_CODE (decl
) != VAR_DECL
|| !DECL_INITIAL (decl
))))
2093 DBXOUT_DECR_NESTING_AND_RETURN (0);
2095 /* If dbxout_init has not yet run, queue this symbol for later. */
2098 preinit_symbols
= tree_cons (0, decl
, preinit_symbols
);
2099 DBXOUT_DECR_NESTING_AND_RETURN (0);
2102 if (flag_debug_only_used_symbols
)
2106 /* We now have a used symbol. We need to generate the info for
2107 the symbol's type in addition to the symbol itself. These
2108 type symbols are queued to be generated after were done with
2109 the symbol itself (done because the symbol's info is generated
2110 with fprintf's, etc. as it determines what's needed).
2112 Note, because the TREE_TYPE(type) might be something like a
2113 pointer to a named type we need to look for the first name
2114 we see following the TREE_TYPE chain. */
2117 while (POINTER_TYPE_P (t
))
2120 /* RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, and ENUMERAL_TYPE
2121 need special treatment. The TYPE_STUB_DECL field in these
2122 types generally represents the tag name type we want to
2123 output. In addition there could be a typedef type with
2124 a different name. In that case we also want to output
2127 if ((TREE_CODE (t
) == RECORD_TYPE
2128 || TREE_CODE (t
) == UNION_TYPE
2129 || TREE_CODE (t
) == QUAL_UNION_TYPE
2130 || TREE_CODE (t
) == ENUMERAL_TYPE
)
2131 && TYPE_STUB_DECL (t
)
2132 && TYPE_STUB_DECL (t
) != decl
2133 && TREE_CODE_CLASS (TREE_CODE (TYPE_STUB_DECL (t
))) == 'd'
2134 && ! DECL_IGNORED_P (TYPE_STUB_DECL (t
)))
2136 debug_queue_symbol (TYPE_STUB_DECL (t
));
2138 && TYPE_NAME (t
) != TYPE_STUB_DECL (t
)
2139 && TYPE_NAME (t
) != decl
2140 && TREE_CODE_CLASS (TREE_CODE (TYPE_NAME (t
))) == 'd')
2141 debug_queue_symbol (TYPE_NAME (t
));
2143 else if (TYPE_NAME (t
)
2144 && TYPE_NAME (t
) != decl
2145 && TREE_CODE_CLASS (TREE_CODE (TYPE_NAME (t
))) == 'd')
2146 debug_queue_symbol (TYPE_NAME (t
));
2149 emit_pending_bincls_if_required ();
2151 dbxout_prepare_symbol (decl
);
2153 /* The output will always start with the symbol name,
2154 so always count that in the length-output-so-far. */
2156 if (DECL_NAME (decl
) != 0)
2157 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (DECL_NAME (decl
));
2159 switch (TREE_CODE (decl
))
2162 /* Enum values are defined by defining the enum type. */
2166 if (DECL_RTL (decl
) == 0)
2167 DBXOUT_DECR_NESTING_AND_RETURN (0);
2168 if (DECL_EXTERNAL (decl
))
2170 /* Don't mention a nested function under its parent. */
2171 context
= decl_function_context (decl
);
2172 if (context
== current_function_decl
)
2174 if (!MEM_P (DECL_RTL (decl
))
2175 || GET_CODE (XEXP (DECL_RTL (decl
), 0)) != SYMBOL_REF
)
2179 fprintf (asmfile
, "%s\"%s:%c", ASM_STABS_OP
,
2180 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)),
2181 TREE_PUBLIC (decl
) ? 'F' : 'f');
2184 current_sym_code
= N_FUN
;
2185 current_sym_addr
= XEXP (DECL_RTL (decl
), 0);
2187 if (TREE_TYPE (type
))
2188 dbxout_type (TREE_TYPE (type
), 0);
2190 dbxout_type (void_type_node
, 0);
2192 /* For a nested function, when that function is compiled,
2193 mention the containing function name
2194 as well as (since dbx wants it) our own assembler-name. */
2196 fprintf (asmfile
, ",%s,%s",
2197 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)),
2198 IDENTIFIER_POINTER (DECL_NAME (context
)));
2200 dbxout_finish_symbol (decl
);
2204 /* Don't output the same typedef twice.
2205 And don't output what language-specific stuff doesn't want output. */
2206 if (TREE_ASM_WRITTEN (decl
) || TYPE_DECL_SUPPRESS_DEBUG (decl
))
2207 DBXOUT_DECR_NESTING_AND_RETURN (0);
2209 /* Don't output typedefs for types with magic type numbers (XCOFF). */
2210 #ifdef DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER
2212 int fundamental_type_number
=
2213 DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER (decl
);
2215 if (fundamental_type_number
!= 0)
2217 TREE_ASM_WRITTEN (decl
) = 1;
2218 TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl
)) = fundamental_type_number
;
2219 DBXOUT_DECR_NESTING_AND_RETURN (0);
2229 if (DECL_NAME (decl
))
2231 /* Nonzero means we must output a tag as well as a typedef. */
2234 /* Handle the case of a C++ structure or union
2235 where the TYPE_NAME is a TYPE_DECL
2236 which gives both a typedef name and a tag. */
2237 /* dbx requires the tag first and the typedef second. */
2238 if ((TREE_CODE (type
) == RECORD_TYPE
2239 || TREE_CODE (type
) == UNION_TYPE
2240 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
2241 && TYPE_NAME (type
) == decl
2242 && !(use_gnu_debug_info_extensions
&& have_used_extensions
)
2243 && !TREE_ASM_WRITTEN (TYPE_NAME (type
))
2244 /* Distinguish the implicit typedefs of C++
2245 from explicit ones that might be found in C. */
2246 && DECL_ARTIFICIAL (decl
)
2247 /* Do not generate a tag for incomplete records. */
2248 && COMPLETE_TYPE_P (type
)
2249 /* Do not generate a tag for records of variable size,
2250 since this type can not be properly described in the
2251 DBX format, and it confuses some tools such as objdump. */
2252 && host_integerp (TYPE_SIZE (type
), 1))
2254 tree name
= TYPE_NAME (type
);
2255 if (TREE_CODE (name
) == TYPE_DECL
)
2256 name
= DECL_NAME (name
);
2258 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2259 current_sym_value
= 0;
2260 current_sym_addr
= 0;
2261 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (name
);
2263 fprintf (asmfile
, "%s\"%s:T", ASM_STABS_OP
,
2264 IDENTIFIER_POINTER (name
));
2265 dbxout_type (type
, 1);
2266 dbxout_finish_symbol (NULL_TREE
);
2269 /* Output .stabs (or whatever) and leading double quote. */
2270 fprintf (asmfile
, "%s\"", ASM_STABS_OP
);
2272 if (use_gnu_debug_info_extensions
)
2274 /* Output leading class/struct qualifiers. */
2275 dbxout_class_name_qualifiers (decl
);
2278 /* Output typedef name. */
2279 fprintf (asmfile
, "%s:", IDENTIFIER_POINTER (DECL_NAME (decl
)));
2281 /* Short cut way to output a tag also. */
2282 if ((TREE_CODE (type
) == RECORD_TYPE
2283 || TREE_CODE (type
) == UNION_TYPE
2284 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
2285 && TYPE_NAME (type
) == decl
2286 /* Distinguish the implicit typedefs of C++
2287 from explicit ones that might be found in C. */
2288 && DECL_ARTIFICIAL (decl
))
2290 if (use_gnu_debug_info_extensions
&& have_used_extensions
)
2292 putc ('T', asmfile
);
2293 TREE_ASM_WRITTEN (TYPE_NAME (type
)) = 1;
2295 #if 0 /* Now we generate the tag for this case up above. */
2301 putc ('t', asmfile
);
2302 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2304 dbxout_type (type
, 1);
2305 dbxout_finish_symbol (decl
);
2309 /* Don't output a tag if this is an incomplete type. This prevents
2310 the sun4 Sun OS 4.x dbx from crashing. */
2312 if (tag_needed
&& TYPE_NAME (type
) != 0
2313 && (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
2314 || (DECL_NAME (TYPE_NAME (type
)) != 0))
2315 && COMPLETE_TYPE_P (type
)
2316 && !TREE_ASM_WRITTEN (TYPE_NAME (type
)))
2318 /* For a TYPE_DECL with no name, but the type has a name,
2320 This is what represents `struct foo' with no typedef. */
2321 /* In C++, the name of a type is the corresponding typedef.
2322 In C, it is an IDENTIFIER_NODE. */
2323 tree name
= TYPE_NAME (type
);
2324 if (TREE_CODE (name
) == TYPE_DECL
)
2325 name
= DECL_NAME (name
);
2327 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2328 current_sym_value
= 0;
2329 current_sym_addr
= 0;
2330 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (name
);
2332 fprintf (asmfile
, "%s\"%s:T", ASM_STABS_OP
,
2333 IDENTIFIER_POINTER (name
));
2334 dbxout_type (type
, 1);
2335 dbxout_finish_symbol (NULL_TREE
);
2339 /* If an enum type has no name, it cannot be referred to,
2340 but we must output it anyway, since the enumeration constants
2341 can be referred to. */
2342 if (!did_output
&& TREE_CODE (type
) == ENUMERAL_TYPE
)
2344 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2345 current_sym_value
= 0;
2346 current_sym_addr
= 0;
2347 current_sym_nchars
= 2;
2349 /* Some debuggers fail when given NULL names, so give this a
2350 harmless name of ` '. */
2351 fprintf (asmfile
, "%s\" :T", ASM_STABS_OP
);
2352 dbxout_type (type
, 1);
2353 dbxout_finish_symbol (NULL_TREE
);
2356 /* Prevent duplicate output of a typedef. */
2357 TREE_ASM_WRITTEN (decl
) = 1;
2362 /* Parm decls go in their own separate chains
2363 and are output by dbxout_reg_parms and dbxout_parms. */
2367 /* Named return value, treat like a VAR_DECL. */
2369 if (! DECL_RTL_SET_P (decl
))
2370 DBXOUT_DECR_NESTING_AND_RETURN (0);
2371 /* Don't mention a variable that is external.
2372 Let the file that defines it describe it. */
2373 if (DECL_EXTERNAL (decl
))
2376 /* If the variable is really a constant
2377 and not written in memory, inform the debugger. */
2378 if (TREE_STATIC (decl
) && TREE_READONLY (decl
)
2379 && DECL_INITIAL (decl
) != 0
2380 && host_integerp (DECL_INITIAL (decl
), 0)
2381 && ! TREE_ASM_WRITTEN (decl
)
2382 && (DECL_CONTEXT (decl
) == NULL_TREE
2383 || TREE_CODE (DECL_CONTEXT (decl
)) == BLOCK
))
2385 if (TREE_PUBLIC (decl
) == 0)
2387 /* The sun4 assembler does not grok this. */
2388 const char *name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
2390 if (TREE_CODE (TREE_TYPE (decl
)) == INTEGER_TYPE
2391 || TREE_CODE (TREE_TYPE (decl
)) == ENUMERAL_TYPE
)
2393 HOST_WIDE_INT ival
= tree_low_cst (DECL_INITIAL (decl
), 0);
2394 fprintf (asmfile
, "%s\"%s:c=i" HOST_WIDE_INT_PRINT_DEC
2396 ASM_STABS_OP
, name
, ival
, N_LSYM
);
2397 DBXOUT_DECR_NESTING
;
2400 else if (TREE_CODE (TREE_TYPE (decl
)) == REAL_TYPE
)
2402 /* Don't know how to do this yet. */
2406 /* else it is something we handle like a normal variable. */
2409 SET_DECL_RTL (decl
, eliminate_regs (DECL_RTL (decl
), 0, NULL_RTX
));
2410 #ifdef LEAF_REG_REMAP
2411 if (current_function_uses_only_leaf_regs
)
2412 leaf_renumber_regs_insn (DECL_RTL (decl
));
2415 result
= dbxout_symbol_location (decl
, type
, 0, DECL_RTL (decl
));
2421 DBXOUT_DECR_NESTING
;
2425 /* Output the stab for DECL, a VAR_DECL, RESULT_DECL or PARM_DECL.
2426 Add SUFFIX to its name, if SUFFIX is not 0.
2427 Describe the variable as residing in HOME
2428 (usually HOME is DECL_RTL (DECL), but not always).
2429 Returns 1 if the stab was really emitted. */
2432 dbxout_symbol_location (tree decl
, tree type
, const char *suffix
, rtx home
)
2437 emit_pending_bincls_if_required ();
2439 /* Don't mention a variable at all
2440 if it was completely optimized into nothingness.
2442 If the decl was from an inline function, then its rtl
2443 is not identically the rtl that was used in this
2444 particular compilation. */
2445 if (GET_CODE (home
) == SUBREG
)
2449 while (GET_CODE (value
) == SUBREG
)
2450 value
= SUBREG_REG (value
);
2453 if (REGNO (value
) >= FIRST_PSEUDO_REGISTER
)
2456 home
= alter_subreg (&home
);
2460 regno
= REGNO (home
);
2461 if (regno
>= FIRST_PSEUDO_REGISTER
)
2465 /* The kind-of-variable letter depends on where
2466 the variable is and on the scope of its name:
2467 G and N_GSYM for static storage and global scope,
2468 S for static storage and file scope,
2469 V for static storage and local scope,
2470 for those two, use N_LCSYM if data is in bss segment,
2471 N_STSYM if in data segment, N_FUN otherwise.
2472 (We used N_FUN originally, then changed to N_STSYM
2473 to please GDB. However, it seems that confused ld.
2474 Now GDB has been fixed to like N_FUN, says Kingdon.)
2475 no letter at all, and N_LSYM, for auto variable,
2476 r and N_RSYM for register variable. */
2479 && GET_CODE (XEXP (home
, 0)) == SYMBOL_REF
)
2481 if (TREE_PUBLIC (decl
))
2484 current_sym_code
= N_GSYM
;
2488 current_sym_addr
= XEXP (home
, 0);
2490 letter
= decl_function_context (decl
) ? 'V' : 'S';
2492 /* This should be the same condition as in assemble_variable, but
2493 we don't have access to dont_output_data here. So, instead,
2494 we rely on the fact that error_mark_node initializers always
2495 end up in bss for C++ and never end up in bss for C. */
2496 if (DECL_INITIAL (decl
) == 0
2497 || (!strcmp (lang_hooks
.name
, "GNU C++")
2498 && DECL_INITIAL (decl
) == error_mark_node
))
2499 current_sym_code
= N_LCSYM
;
2500 else if (DECL_IN_TEXT_SECTION (decl
))
2501 /* This is not quite right, but it's the closest
2502 of all the codes that Unix defines. */
2503 current_sym_code
= DBX_STATIC_CONST_VAR_CODE
;
2506 /* Some ports can transform a symbol ref into a label ref,
2507 because the symbol ref is too far away and has to be
2508 dumped into a constant pool. Alternatively, the symbol
2509 in the constant pool might be referenced by a different
2511 if (GET_CODE (current_sym_addr
) == SYMBOL_REF
2512 && CONSTANT_POOL_ADDRESS_P (current_sym_addr
))
2515 rtx tmp
= get_pool_constant_mark (current_sym_addr
, &marked
);
2517 if (GET_CODE (tmp
) == SYMBOL_REF
)
2519 current_sym_addr
= tmp
;
2520 if (CONSTANT_POOL_ADDRESS_P (current_sym_addr
))
2521 get_pool_constant_mark (current_sym_addr
, &marked
);
2525 else if (GET_CODE (tmp
) == LABEL_REF
)
2527 current_sym_addr
= tmp
;
2531 /* If all references to the constant pool were optimized
2532 out, we just ignore the symbol. */
2537 /* Ultrix `as' seems to need this. */
2538 #ifdef DBX_STATIC_STAB_DATA_SECTION
2541 current_sym_code
= N_STSYM
;
2545 else if (regno
>= 0)
2548 current_sym_code
= N_RSYM
;
2549 current_sym_value
= DBX_REGISTER_NUMBER (regno
);
2551 else if (MEM_P (home
)
2552 && (MEM_P (XEXP (home
, 0))
2553 || (REG_P (XEXP (home
, 0))
2554 && REGNO (XEXP (home
, 0)) != HARD_FRAME_POINTER_REGNUM
2555 && REGNO (XEXP (home
, 0)) != STACK_POINTER_REGNUM
2556 #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
2557 && REGNO (XEXP (home
, 0)) != ARG_POINTER_REGNUM
2560 /* If the value is indirect by memory or by a register
2561 that isn't the frame pointer
2562 then it means the object is variable-sized and address through
2563 that register or stack slot. DBX has no way to represent this
2564 so all we can do is output the variable as a pointer.
2565 If it's not a parameter, ignore it. */
2567 if (REG_P (XEXP (home
, 0)))
2570 current_sym_code
= N_RSYM
;
2571 if (REGNO (XEXP (home
, 0)) >= FIRST_PSEUDO_REGISTER
)
2573 current_sym_value
= DBX_REGISTER_NUMBER (REGNO (XEXP (home
, 0)));
2577 current_sym_code
= N_LSYM
;
2578 /* RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))).
2579 We want the value of that CONST_INT. */
2581 = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (home
, 0), 0));
2584 /* Effectively do build_pointer_type, but don't cache this type,
2585 since it might be temporary whereas the type it points to
2586 might have been saved for inlining. */
2587 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
2588 type
= make_node (POINTER_TYPE
);
2589 TREE_TYPE (type
) = TREE_TYPE (decl
);
2591 else if (MEM_P (home
)
2592 && REG_P (XEXP (home
, 0)))
2594 current_sym_code
= N_LSYM
;
2595 current_sym_value
= DEBUGGER_AUTO_OFFSET (XEXP (home
, 0));
2597 else if (MEM_P (home
)
2598 && GET_CODE (XEXP (home
, 0)) == PLUS
2599 && GET_CODE (XEXP (XEXP (home
, 0), 1)) == CONST_INT
)
2601 current_sym_code
= N_LSYM
;
2602 /* RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
2603 We want the value of that CONST_INT. */
2604 current_sym_value
= DEBUGGER_AUTO_OFFSET (XEXP (home
, 0));
2606 else if (MEM_P (home
)
2607 && GET_CODE (XEXP (home
, 0)) == CONST
)
2609 /* Handle an obscure case which can arise when optimizing and
2610 when there are few available registers. (This is *always*
2611 the case for i386/i486 targets). The RTL looks like
2612 (MEM (CONST ...)) even though this variable is a local `auto'
2613 or a local `register' variable. In effect, what has happened
2614 is that the reload pass has seen that all assignments and
2615 references for one such a local variable can be replaced by
2616 equivalent assignments and references to some static storage
2617 variable, thereby avoiding the need for a register. In such
2618 cases we're forced to lie to debuggers and tell them that
2619 this variable was itself `static'. */
2620 current_sym_code
= N_LCSYM
;
2622 current_sym_addr
= XEXP (XEXP (home
, 0), 0);
2624 else if (GET_CODE (home
) == CONCAT
)
2628 /* If TYPE is not a COMPLEX_TYPE (it might be a RECORD_TYPE,
2629 for example), then there is no easy way to figure out
2630 what SUBTYPE should be. So, we give up. */
2631 if (TREE_CODE (type
) != COMPLEX_TYPE
)
2634 subtype
= TREE_TYPE (type
);
2636 /* If the variable's storage is in two parts,
2637 output each as a separate stab with a modified name. */
2638 if (WORDS_BIG_ENDIAN
)
2639 dbxout_symbol_location (decl
, subtype
, "$imag", XEXP (home
, 0));
2641 dbxout_symbol_location (decl
, subtype
, "$real", XEXP (home
, 0));
2643 dbxout_prepare_symbol (decl
);
2645 if (WORDS_BIG_ENDIAN
)
2646 dbxout_symbol_location (decl
, subtype
, "$real", XEXP (home
, 1));
2648 dbxout_symbol_location (decl
, subtype
, "$imag", XEXP (home
, 1));
2652 /* Address might be a MEM, when DECL is a variable-sized object.
2653 Or it might be const0_rtx, meaning previous passes
2654 want us to ignore this variable. */
2657 /* Ok, start a symtab entry and output the variable name. */
2660 #ifdef DBX_STATIC_BLOCK_START
2661 DBX_STATIC_BLOCK_START (asmfile
, current_sym_code
);
2664 dbxout_symbol_name (decl
, suffix
, letter
);
2665 dbxout_type (type
, 0);
2666 dbxout_finish_symbol (decl
);
2668 #ifdef DBX_STATIC_BLOCK_END
2669 DBX_STATIC_BLOCK_END (asmfile
, current_sym_code
);
2674 /* Output the symbol name of DECL for a stabs, with suffix SUFFIX.
2675 Then output LETTER to indicate the kind of location the symbol has. */
2678 dbxout_symbol_name (tree decl
, const char *suffix
, int letter
)
2682 if (DECL_CONTEXT (decl
)
2683 && (TYPE_P (DECL_CONTEXT (decl
))
2684 || TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
))
2685 /* One slight hitch: if this is a VAR_DECL which is a class member
2686 or a namespace member, we must put out the mangled name instead of the
2687 DECL_NAME. Note also that static member (variable) names DO NOT begin
2688 with underscores in .stabs directives. */
2689 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
));
2691 /* ...but if we're function-local, we don't want to include the junk
2692 added by ASM_FORMAT_PRIVATE_NAME. */
2693 name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
2697 fprintf (asmfile
, "%s\"%s%s:", ASM_STABS_OP
, name
,
2698 (suffix
? suffix
: ""));
2701 putc (letter
, asmfile
);
2705 dbxout_prepare_symbol (tree decl ATTRIBUTE_UNUSED
)
2708 const char *filename
= DECL_SOURCE_FILE (decl
);
2710 dbxout_source_file (asmfile
, filename
);
2713 /* Initialize variables used to communicate each symbol's debug
2714 information to dbxout_finish_symbol with zeroes. */
2716 /* Cast avoids warning in old compilers. */
2717 current_sym_code
= (STAB_CODE_TYPE
) 0;
2718 current_sym_value
= 0;
2719 current_sym_addr
= 0;
2723 dbxout_finish_symbol (tree sym
)
2725 #ifdef DBX_FINISH_SYMBOL
2726 DBX_FINISH_SYMBOL (sym
);
2729 if (use_gnu_debug_info_extensions
&& sym
!= 0)
2730 line
= DECL_SOURCE_LINE (sym
);
2732 fprintf (asmfile
, "\",%d,0,%d,", current_sym_code
, line
);
2733 if (current_sym_addr
)
2734 output_addr_const (asmfile
, current_sym_addr
);
2736 fprintf (asmfile
, "%d", current_sym_value
);
2737 putc ('\n', asmfile
);
2741 /* Output definitions of all the decls in a chain. Return nonzero if
2742 anything was output */
2745 dbxout_syms (tree syms
)
2750 result
+= dbxout_symbol (syms
, 1);
2751 syms
= TREE_CHAIN (syms
);
2756 /* The following two functions output definitions of function parameters.
2757 Each parameter gets a definition locating it in the parameter list.
2758 Each parameter that is a register variable gets a second definition
2759 locating it in the register.
2761 Printing or argument lists in gdb uses the definitions that
2762 locate in the parameter list. But reference to the variable in
2763 expressions uses preferentially the definition as a register. */
2765 /* Output definitions, referring to storage in the parmlist,
2766 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
2769 dbxout_parms (tree parms
)
2773 emit_pending_bincls_if_required ();
2775 for (; parms
; parms
= TREE_CHAIN (parms
))
2776 if (DECL_NAME (parms
)
2777 && TREE_TYPE (parms
) != error_mark_node
2778 && DECL_RTL_SET_P (parms
)
2779 && DECL_INCOMING_RTL (parms
))
2781 dbxout_prepare_symbol (parms
);
2783 /* Perform any necessary register eliminations on the parameter's rtl,
2784 so that the debugging output will be accurate. */
2785 DECL_INCOMING_RTL (parms
)
2786 = eliminate_regs (DECL_INCOMING_RTL (parms
), 0, NULL_RTX
);
2787 SET_DECL_RTL (parms
, eliminate_regs (DECL_RTL (parms
), 0, NULL_RTX
));
2788 #ifdef LEAF_REG_REMAP
2789 if (current_function_uses_only_leaf_regs
)
2791 leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms
));
2792 leaf_renumber_regs_insn (DECL_RTL (parms
));
2796 if (PARM_PASSED_IN_MEMORY (parms
))
2798 rtx addr
= XEXP (DECL_INCOMING_RTL (parms
), 0);
2800 /* ??? Here we assume that the parm address is indexed
2801 off the frame pointer or arg pointer.
2802 If that is not true, we produce meaningless results,
2803 but do not crash. */
2804 if (GET_CODE (addr
) == PLUS
2805 && GET_CODE (XEXP (addr
, 1)) == CONST_INT
)
2806 current_sym_value
= INTVAL (XEXP (addr
, 1));
2808 current_sym_value
= 0;
2810 current_sym_code
= N_PSYM
;
2811 current_sym_addr
= 0;
2814 if (DECL_NAME (parms
))
2816 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (DECL_NAME (parms
));
2818 fprintf (asmfile
, "%s\"%s:%c", ASM_STABS_OP
,
2819 IDENTIFIER_POINTER (DECL_NAME (parms
)),
2820 DBX_MEMPARM_STABS_LETTER
);
2824 current_sym_nchars
= 8;
2825 fprintf (asmfile
, "%s\"(anon):%c", ASM_STABS_OP
,
2826 DBX_MEMPARM_STABS_LETTER
);
2829 /* It is quite tempting to use:
2831 dbxout_type (TREE_TYPE (parms), 0);
2833 as the next statement, rather than using DECL_ARG_TYPE(), so
2834 that gcc reports the actual type of the parameter, rather
2835 than the promoted type. This certainly makes GDB's life
2836 easier, at least for some ports. The change is a bad idea
2837 however, since GDB expects to be able access the type without
2838 performing any conversions. So for example, if we were
2839 passing a float to an unprototyped function, gcc will store a
2840 double on the stack, but if we emit a stab saying the type is a
2841 float, then gdb will only read in a single value, and this will
2842 produce an erroneous value. */
2843 dbxout_type (DECL_ARG_TYPE (parms
), 0);
2844 current_sym_value
= DEBUGGER_ARG_OFFSET (current_sym_value
, addr
);
2845 dbxout_finish_symbol (parms
);
2847 else if (REG_P (DECL_RTL (parms
)))
2850 char regparm_letter
;
2852 /* Parm passed in registers and lives in registers or nowhere. */
2854 current_sym_code
= DBX_REGPARM_STABS_CODE
;
2855 regparm_letter
= DBX_REGPARM_STABS_LETTER
;
2856 current_sym_addr
= 0;
2858 /* If parm lives in a register, use that register;
2859 pretend the parm was passed there. It would be more consistent
2860 to describe the register where the parm was passed,
2861 but in practice that register usually holds something else.
2863 If we use DECL_RTL, then we must use the declared type of
2864 the variable, not the type that it arrived in. */
2865 if (REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
2867 best_rtl
= DECL_RTL (parms
);
2868 parm_type
= TREE_TYPE (parms
);
2870 /* If the parm lives nowhere, use the register where it was
2871 passed. It is also better to use the declared type here. */
2874 best_rtl
= DECL_INCOMING_RTL (parms
);
2875 parm_type
= TREE_TYPE (parms
);
2877 current_sym_value
= DBX_REGISTER_NUMBER (REGNO (best_rtl
));
2880 if (DECL_NAME (parms
))
2882 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (DECL_NAME (parms
));
2883 fprintf (asmfile
, "%s\"%s:%c", ASM_STABS_OP
,
2884 IDENTIFIER_POINTER (DECL_NAME (parms
)),
2889 current_sym_nchars
= 8;
2890 fprintf (asmfile
, "%s\"(anon):%c", ASM_STABS_OP
,
2894 dbxout_type (parm_type
, 0);
2895 dbxout_finish_symbol (parms
);
2897 else if (MEM_P (DECL_RTL (parms
))
2898 && REG_P (XEXP (DECL_RTL (parms
), 0))
2899 && REGNO (XEXP (DECL_RTL (parms
), 0)) != HARD_FRAME_POINTER_REGNUM
2900 && REGNO (XEXP (DECL_RTL (parms
), 0)) != STACK_POINTER_REGNUM
2901 #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
2902 && REGNO (XEXP (DECL_RTL (parms
), 0)) != ARG_POINTER_REGNUM
2906 /* Parm was passed via invisible reference.
2907 That is, its address was passed in a register.
2908 Output it as if it lived in that register.
2909 The debugger will know from the type
2910 that it was actually passed by invisible reference. */
2912 char regparm_letter
;
2913 /* Parm passed in registers and lives in registers or nowhere. */
2915 current_sym_code
= DBX_REGPARM_STABS_CODE
;
2916 if (use_gnu_debug_info_extensions
)
2917 regparm_letter
= GDB_INV_REF_REGPARM_STABS_LETTER
;
2919 regparm_letter
= DBX_REGPARM_STABS_LETTER
;
2921 /* DECL_RTL looks like (MEM (REG...). Get the register number.
2922 If it is an unallocated pseudo-reg, then use the register where
2923 it was passed instead. */
2924 if (REGNO (XEXP (DECL_RTL (parms
), 0)) < FIRST_PSEUDO_REGISTER
)
2925 current_sym_value
= REGNO (XEXP (DECL_RTL (parms
), 0));
2927 current_sym_value
= REGNO (DECL_INCOMING_RTL (parms
));
2929 current_sym_addr
= 0;
2932 if (DECL_NAME (parms
))
2935 = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms
)));
2937 fprintf (asmfile
, "%s\"%s:%c", ASM_STABS_OP
,
2938 IDENTIFIER_POINTER (DECL_NAME (parms
)),
2943 current_sym_nchars
= 8;
2944 fprintf (asmfile
, "%s\"(anon):%c", ASM_STABS_OP
,
2948 dbxout_type (TREE_TYPE (parms
), 0);
2949 dbxout_finish_symbol (parms
);
2951 else if (MEM_P (DECL_RTL (parms
))
2952 && MEM_P (XEXP (DECL_RTL (parms
), 0)))
2954 /* Parm was passed via invisible reference, with the reference
2955 living on the stack. DECL_RTL looks like
2956 (MEM (MEM (PLUS (REG ...) (CONST_INT ...)))) or it
2957 could look like (MEM (MEM (REG))). */
2958 const char *const decl_name
= (DECL_NAME (parms
)
2959 ? IDENTIFIER_POINTER (DECL_NAME (parms
))
2961 if (REG_P (XEXP (XEXP (DECL_RTL (parms
), 0), 0)))
2962 current_sym_value
= 0;
2965 = INTVAL (XEXP (XEXP (XEXP (DECL_RTL (parms
), 0), 0), 1));
2966 current_sym_addr
= 0;
2967 current_sym_code
= N_PSYM
;
2970 fprintf (asmfile
, "%s\"%s:v", ASM_STABS_OP
, decl_name
);
2973 = DEBUGGER_ARG_OFFSET (current_sym_value
,
2974 XEXP (XEXP (DECL_RTL (parms
), 0), 0));
2975 dbxout_type (TREE_TYPE (parms
), 0);
2976 dbxout_finish_symbol (parms
);
2978 else if (MEM_P (DECL_RTL (parms
))
2979 && XEXP (DECL_RTL (parms
), 0) != const0_rtx
2980 /* ??? A constant address for a parm can happen
2981 when the reg it lives in is equiv to a constant in memory.
2982 Should make this not happen, after 2.4. */
2983 && ! CONSTANT_P (XEXP (DECL_RTL (parms
), 0)))
2985 /* Parm was passed in registers but lives on the stack. */
2987 current_sym_code
= N_PSYM
;
2988 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
2989 in which case we want the value of that CONST_INT,
2991 in which case we use a value of zero. */
2992 if (REG_P (XEXP (DECL_RTL (parms
), 0)))
2993 current_sym_value
= 0;
2996 = INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1));
2998 current_sym_addr
= 0;
3000 /* Make a big endian correction if the mode of the type of the
3001 parameter is not the same as the mode of the rtl. */
3002 if (BYTES_BIG_ENDIAN
3003 && TYPE_MODE (TREE_TYPE (parms
)) != GET_MODE (DECL_RTL (parms
))
3004 && GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms
))) < UNITS_PER_WORD
)
3006 current_sym_value
+=
3007 GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
)))
3008 - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms
)));
3012 if (DECL_NAME (parms
))
3015 = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms
)));
3017 fprintf (asmfile
, "%s\"%s:%c", ASM_STABS_OP
,
3018 IDENTIFIER_POINTER (DECL_NAME (parms
)),
3019 DBX_MEMPARM_STABS_LETTER
);
3023 current_sym_nchars
= 8;
3024 fprintf (asmfile
, "%s\"(anon):%c", ASM_STABS_OP
,
3025 DBX_MEMPARM_STABS_LETTER
);
3029 = DEBUGGER_ARG_OFFSET (current_sym_value
,
3030 XEXP (DECL_RTL (parms
), 0));
3031 dbxout_type (TREE_TYPE (parms
), 0);
3032 dbxout_finish_symbol (parms
);
3035 DBXOUT_DECR_NESTING
;
3038 /* Output definitions for the places where parms live during the function,
3039 when different from where they were passed, when the parms were passed
3042 It is not useful to do this for parms passed in registers
3043 that live during the function in different registers, because it is
3044 impossible to look in the passed register for the passed value,
3045 so we use the within-the-function register to begin with.
3047 PARMS is a chain of PARM_DECL nodes. */
3050 dbxout_reg_parms (tree parms
)
3054 for (; parms
; parms
= TREE_CHAIN (parms
))
3055 if (DECL_NAME (parms
) && PARM_PASSED_IN_MEMORY (parms
))
3057 dbxout_prepare_symbol (parms
);
3059 /* Report parms that live in registers during the function
3060 but were passed in memory. */
3061 if (REG_P (DECL_RTL (parms
))
3062 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
3063 dbxout_symbol_location (parms
, TREE_TYPE (parms
),
3064 0, DECL_RTL (parms
));
3065 else if (GET_CODE (DECL_RTL (parms
)) == CONCAT
)
3066 dbxout_symbol_location (parms
, TREE_TYPE (parms
),
3067 0, DECL_RTL (parms
));
3068 /* Report parms that live in memory but not where they were passed. */
3069 else if (MEM_P (DECL_RTL (parms
))
3070 && ! rtx_equal_p (DECL_RTL (parms
), DECL_INCOMING_RTL (parms
)))
3071 dbxout_symbol_location (parms
, TREE_TYPE (parms
),
3072 0, DECL_RTL (parms
));
3074 DBXOUT_DECR_NESTING
;
3077 /* Given a chain of ..._TYPE nodes (as come in a parameter list),
3078 output definitions of those names, in raw form */
3081 dbxout_args (tree args
)
3085 putc (',', asmfile
);
3086 dbxout_type (TREE_VALUE (args
), 0);
3088 args
= TREE_CHAIN (args
);
3092 /* Output everything about a symbol block (a BLOCK node
3093 that represents a scope level),
3094 including recursive output of contained blocks.
3096 BLOCK is the BLOCK node.
3097 DEPTH is its depth within containing symbol blocks.
3098 ARGS is usually zero; but for the outermost block of the
3099 body of a function, it is a chain of PARM_DECLs for the function parameters.
3100 We output definitions of all the register parms
3101 as if they were local variables of that block.
3103 If -g1 was used, we count blocks just the same, but output nothing
3104 except for the outermost block.
3106 Actually, BLOCK may be several blocks chained together.
3107 We handle them all in sequence. */
3110 dbxout_block (tree block
, int depth
, tree args
)
3114 #if DBX_BLOCKS_FUNCTION_RELATIVE
3115 const char *begin_label
;
3116 if (current_function_func_begin_label
!= NULL_TREE
)
3117 begin_label
= IDENTIFIER_POINTER (current_function_func_begin_label
);
3119 begin_label
= XSTR (XEXP (DECL_RTL (current_function_decl
), 0), 0);
3124 /* Ignore blocks never expanded or otherwise marked as real. */
3125 if (TREE_USED (block
) && TREE_ASM_WRITTEN (block
))
3129 /* In dbx format, the syms of a block come before the N_LBRAC.
3130 If nothing is output, we don't need the N_LBRAC, either. */
3132 if (debug_info_level
!= DINFO_LEVEL_TERSE
|| depth
== 0)
3133 did_output
= dbxout_syms (BLOCK_VARS (block
));
3135 dbxout_reg_parms (args
);
3137 /* Now output an N_LBRAC symbol to represent the beginning of
3138 the block. Use the block's tree-walk order to generate
3139 the assembler symbols LBBn and LBEn
3140 that final will define around the code in this block. */
3141 if (depth
> 0 && did_output
)
3144 blocknum
= BLOCK_NUMBER (block
);
3145 ASM_GENERATE_INTERNAL_LABEL (buf
, "LBB", blocknum
);
3147 if (BLOCK_HANDLER_BLOCK (block
))
3149 /* A catch block. Must precede N_LBRAC. */
3150 tree decl
= BLOCK_VARS (block
);
3153 fprintf (asmfile
, "%s\"%s:C1\",%d,0,0,", ASM_STABS_OP
,
3154 IDENTIFIER_POINTER (DECL_NAME (decl
)), N_CATCH
);
3155 assemble_name (asmfile
, buf
);
3156 fprintf (asmfile
, "\n");
3157 decl
= TREE_CHAIN (decl
);
3161 #ifdef DBX_OUTPUT_LBRAC
3162 DBX_OUTPUT_LBRAC (asmfile
, buf
);
3164 fprintf (asmfile
, "%s%d,0,0,", ASM_STABN_OP
, N_LBRAC
);
3165 assemble_name (asmfile
, buf
);
3166 #if DBX_BLOCKS_FUNCTION_RELATIVE
3167 putc ('-', asmfile
);
3168 assemble_name (asmfile
, begin_label
);
3170 fprintf (asmfile
, "\n");
3174 /* Output the subblocks. */
3175 dbxout_block (BLOCK_SUBBLOCKS (block
), depth
+ 1, NULL_TREE
);
3177 /* Refer to the marker for the end of the block. */
3178 if (depth
> 0 && did_output
)
3181 ASM_GENERATE_INTERNAL_LABEL (buf
, "LBE", blocknum
);
3182 #ifdef DBX_OUTPUT_RBRAC
3183 DBX_OUTPUT_RBRAC (asmfile
, buf
);
3185 fprintf (asmfile
, "%s%d,0,0,", ASM_STABN_OP
, N_RBRAC
);
3186 assemble_name (asmfile
, buf
);
3187 #if DBX_BLOCKS_FUNCTION_RELATIVE
3188 putc ('-', asmfile
);
3189 assemble_name (asmfile
, begin_label
);
3191 fprintf (asmfile
, "\n");
3195 block
= BLOCK_CHAIN (block
);
3199 /* Output the information about a function and its arguments and result.
3200 Usually this follows the function's code,
3201 but on some systems, it comes before. */
3203 #if defined (DBX_DEBUGGING_INFO)
3205 dbxout_begin_function (tree decl
)
3207 int saved_tree_used1
= TREE_USED (decl
);
3208 TREE_USED (decl
) = 1;
3209 if (DECL_NAME (DECL_RESULT (decl
)) != 0)
3211 int saved_tree_used2
= TREE_USED (DECL_RESULT (decl
));
3212 TREE_USED (DECL_RESULT (decl
)) = 1;
3213 dbxout_symbol (decl
, 0);
3214 TREE_USED (DECL_RESULT (decl
)) = saved_tree_used2
;
3217 dbxout_symbol (decl
, 0);
3218 TREE_USED (decl
) = saved_tree_used1
;
3220 dbxout_parms (DECL_ARGUMENTS (decl
));
3221 if (DECL_NAME (DECL_RESULT (decl
)) != 0)
3222 dbxout_symbol (DECL_RESULT (decl
), 1);
3224 #endif /* DBX_DEBUGGING_INFO */
3226 #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */
3228 #include "gt-dbxout.h"