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"
90 #include "langhooks.h"
92 #ifdef XCOFF_DEBUGGING_INFO
96 #define DBXOUT_DECR_NESTING \
97 if (--debug_nesting == 0 && symbol_queue_index > 0) \
98 { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); }
100 #define DBXOUT_DECR_NESTING_AND_RETURN(x) \
101 do {--debug_nesting; return (x);} while (0)
104 #define ASM_STABS_OP "\t.stabs\t"
108 #define ASM_STABN_OP "\t.stabn\t"
111 #ifndef DBX_TYPE_DECL_STABS_CODE
112 #define DBX_TYPE_DECL_STABS_CODE N_LSYM
115 #ifndef DBX_STATIC_CONST_VAR_CODE
116 #define DBX_STATIC_CONST_VAR_CODE N_FUN
119 #ifndef DBX_REGPARM_STABS_CODE
120 #define DBX_REGPARM_STABS_CODE N_RSYM
123 #ifndef DBX_REGPARM_STABS_LETTER
124 #define DBX_REGPARM_STABS_LETTER 'P'
127 #ifndef NO_DBX_FUNCTION_END
128 #define NO_DBX_FUNCTION_END 0
131 #ifndef NO_DBX_BNSYM_ENSYM
132 #define NO_DBX_BNSYM_ENSYM 0
135 #ifndef DBX_BLOCKS_FUNCTION_RELATIVE
136 #define DBX_BLOCKS_FUNCTION_RELATIVE 0
139 #ifndef DBX_LINES_FUNCTION_RELATIVE
140 #define DBX_LINES_FUNCTION_RELATIVE 0
143 enum typestatus
{TYPE_UNSEEN
, TYPE_XREF
, TYPE_DEFINED
};
145 /* Structure recording information about a C data type.
146 The status element says whether we have yet output
147 the definition of the type. TYPE_XREF says we have
148 output it as a cross-reference only.
149 The file_number and type_number elements are used if DBX_USE_BINCL
152 struct typeinfo
GTY(())
154 enum typestatus status
;
159 /* Vector recording information about C data types.
160 When we first notice a data type (a tree node),
161 we assign it a number using next_type_number.
162 That is its index in this vector. */
164 static GTY ((length ("typevec_len"))) struct typeinfo
*typevec
;
166 /* Number of elements of space allocated in `typevec'. */
168 static GTY(()) int typevec_len
;
170 /* In dbx output, each type gets a unique number.
171 This is the number for the next type output.
172 The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */
174 static GTY(()) int next_type_number
;
176 /* The C front end may call dbxout_symbol before dbxout_init runs.
177 We save all such decls in this list and output them when we get
180 static GTY(()) tree preinit_symbols
;
182 enum binclstatus
{BINCL_NOT_REQUIRED
, BINCL_PENDING
, BINCL_PROCESSED
};
184 /* When using N_BINCL in dbx output, each type number is actually a
185 pair of the file number and the type number within the file.
186 This is a stack of input files. */
190 struct dbx_file
*next
;
192 int next_type_number
;
193 enum binclstatus bincl_status
; /* Keep track of lazy bincl. */
194 const char *pending_bincl_name
; /* Name of bincl. */
195 struct dbx_file
*prev
; /* Chain to traverse all pending bincls. */
198 /* This is the top of the stack.
200 This is not saved for PCH, because restoring a PCH should not change it.
201 next_file_number does have to be saved, because the PCH may use some
202 file numbers; however, just before restoring a PCH, next_file_number
203 should always be 0 because we should not have needed any file numbers
206 #if (defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)) \
207 && defined (DBX_USE_BINCL)
208 static struct dbx_file
*current_file
;
211 /* This is the next file number to use. */
213 static GTY(()) int next_file_number
;
215 /* A counter for dbxout_function_end. */
217 static GTY(()) int scope_labelno
;
219 /* A counter for dbxout_source_line. */
221 static GTY(()) int dbxout_source_line_counter
;
223 /* Nonzero if we have actually used any of the GDB extensions
224 to the debugging format. The idea is that we use them for the
225 first time only if there's a strong reason, but once we have done that,
226 we use them whenever convenient. */
228 static GTY(()) int have_used_extensions
= 0;
230 /* Number for the next N_SOL filename stabs label. The number 0 is reserved
231 for the N_SO filename stabs label. */
233 static GTY(()) int source_label_number
= 1;
235 /* Last source file name mentioned in a NOTE insn. */
237 static GTY(()) const char *lastfile
;
239 /* Used by PCH machinery to detect if 'lastfile' should be reset to
241 static GTY(()) int lastfile_is_base
;
243 /* Typical USG systems don't have stab.h, and they also have
244 no use for DBX-format debugging info. */
246 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
249 /* If zero then there is no pending BINCL. */
250 static int pending_bincls
= 0;
253 /* The original input file name. */
254 static const char *base_input_file
;
256 #ifdef DEBUG_SYMS_TEXT
257 #define FORCE_TEXT function_section (current_function_decl);
264 #define STAB_CODE_TYPE enum __stab_debug_code
266 /* 1 if PARM is passed to this function in memory. */
268 #define PARM_PASSED_IN_MEMORY(PARM) \
269 (MEM_P (DECL_INCOMING_RTL (PARM)))
271 /* A C expression for the integer offset value of an automatic variable
272 (N_LSYM) having address X (an RTX). */
273 #ifndef DEBUGGER_AUTO_OFFSET
274 #define DEBUGGER_AUTO_OFFSET(X) \
275 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
278 /* A C expression for the integer offset value of an argument (N_PSYM)
279 having address X (an RTX). The nominal offset is OFFSET. */
280 #ifndef DEBUGGER_ARG_OFFSET
281 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
284 /* These variables are for dbxout_symbol to communicate to
285 dbxout_finish_symbol.
286 current_sym_code is the symbol-type-code, a symbol N_... define in stab.h.
287 current_sym_value and current_sym_addr are two ways to address the
288 value to store in the symtab entry.
289 current_sym_addr if nonzero represents the value as an rtx.
290 If that is zero, current_sym_value is used. This is used
291 when the value is an offset (such as for auto variables,
292 register variables and parms). */
294 static STAB_CODE_TYPE current_sym_code
;
295 static int current_sym_value
;
296 static rtx current_sym_addr
;
298 /* Number of chars of symbol-description generated so far for the
299 current symbol. Used by CHARS and CONTIN. */
301 static int current_sym_nchars
;
303 /* Report having output N chars of the current symbol-description. */
305 #define CHARS(N) (current_sym_nchars += (N))
307 /* Break the current symbol-description, generating a continuation,
308 if it has become long. */
310 #ifndef DBX_CONTIN_LENGTH
311 #define DBX_CONTIN_LENGTH 80
314 #if DBX_CONTIN_LENGTH > 0
316 do {if (current_sym_nchars > DBX_CONTIN_LENGTH) dbxout_continue ();} while (0)
318 #define CONTIN do { } while (0)
322 static void emit_bincl_stab (const char *c
);
323 static void emit_pending_bincls (void);
325 static inline void emit_pending_bincls_if_required (void);
327 static void dbxout_init (const char *);
328 #ifndef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
329 static unsigned int get_lang_number (void);
331 static void dbxout_finish (const char *);
332 static void dbxout_start_source_file (unsigned, const char *);
333 static void dbxout_end_source_file (unsigned);
334 static void dbxout_typedefs (tree
);
335 static void dbxout_type_index (tree
);
336 #if DBX_CONTIN_LENGTH > 0
337 static void dbxout_continue (void);
339 static void dbxout_args (tree
);
340 static void dbxout_type_fields (tree
);
341 static void dbxout_type_method_1 (tree
, const char *);
342 static void dbxout_type_methods (tree
);
343 static void dbxout_range_type (tree
);
344 static void dbxout_type (tree
, int);
345 static bool print_int_cst_bounds_in_octal_p (tree
);
346 static void print_int_cst_octal (tree
);
347 static void print_octal (unsigned HOST_WIDE_INT
, int);
348 static void print_wide_int (HOST_WIDE_INT
);
349 static void dbxout_type_name (tree
);
350 static void dbxout_class_name_qualifiers (tree
);
351 static int dbxout_symbol_location (tree
, tree
, const char *, rtx
);
352 static void dbxout_symbol_name (tree
, const char *, int);
353 static void dbxout_prepare_symbol (tree
);
354 static void dbxout_finish_symbol (tree
);
355 static void dbxout_block (tree
, int, tree
);
356 static void dbxout_global_decl (tree
);
357 static void dbxout_type_decl (tree
, int);
358 static void dbxout_handle_pch (unsigned);
360 /* The debug hooks structure. */
361 #if defined (DBX_DEBUGGING_INFO)
363 static void dbxout_source_line (unsigned int, const char *);
364 static void dbxout_begin_prologue (unsigned int, const char *);
365 static void dbxout_source_file (FILE *, const char *);
366 static void dbxout_function_end (void);
367 static void dbxout_begin_function (tree
);
368 static void dbxout_begin_block (unsigned, unsigned);
369 static void dbxout_end_block (unsigned, unsigned);
370 static void dbxout_function_decl (tree
);
372 const struct gcc_debug_hooks dbx_debug_hooks
=
376 debug_nothing_int_charstar
,
377 debug_nothing_int_charstar
,
378 dbxout_start_source_file
,
379 dbxout_end_source_file
,
382 debug_true_tree
, /* ignore_block */
383 dbxout_source_line
, /* source_line */
384 dbxout_begin_prologue
, /* begin_prologue */
385 debug_nothing_int_charstar
, /* end_prologue */
386 debug_nothing_int_charstar
, /* end_epilogue */
387 #ifdef DBX_FUNCTION_FIRST
388 dbxout_begin_function
,
390 debug_nothing_tree
, /* begin_function */
392 debug_nothing_int
, /* end_function */
393 dbxout_function_decl
,
394 dbxout_global_decl
, /* global_decl */
395 dbxout_type_decl
, /* type_decl */
396 debug_nothing_tree_tree
, /* imported_module_or_decl */
397 debug_nothing_tree
, /* deferred_inline_function */
398 debug_nothing_tree
, /* outlining_inline_function */
399 debug_nothing_rtx
, /* label */
400 dbxout_handle_pch
, /* handle_pch */
401 debug_nothing_rtx
/* var_location */
403 #endif /* DBX_DEBUGGING_INFO */
405 #if defined (XCOFF_DEBUGGING_INFO)
406 const struct gcc_debug_hooks xcoff_debug_hooks
=
410 debug_nothing_int_charstar
,
411 debug_nothing_int_charstar
,
412 dbxout_start_source_file
,
413 dbxout_end_source_file
,
414 xcoffout_begin_block
,
416 debug_true_tree
, /* ignore_block */
417 xcoffout_source_line
,
418 xcoffout_begin_prologue
, /* begin_prologue */
419 debug_nothing_int_charstar
, /* end_prologue */
420 xcoffout_end_epilogue
,
421 debug_nothing_tree
, /* begin_function */
422 xcoffout_end_function
,
423 debug_nothing_tree
, /* function_decl */
424 dbxout_global_decl
, /* global_decl */
425 dbxout_type_decl
, /* type_decl */
426 debug_nothing_tree_tree
, /* imported_module_or_decl */
427 debug_nothing_tree
, /* deferred_inline_function */
428 debug_nothing_tree
, /* outlining_inline_function */
429 debug_nothing_rtx
, /* label */
430 dbxout_handle_pch
, /* handle_pch */
431 debug_nothing_rtx
/* var_location */
433 #endif /* XCOFF_DEBUGGING_INFO */
435 #if defined (DBX_DEBUGGING_INFO)
437 dbxout_function_end (void)
439 char lscope_label_name
[100];
441 /* The Lscope label must be emitted even if we aren't doing anything
442 else; dbxout_block needs it. */
443 function_section (current_function_decl
);
445 /* Convert Ltext into the appropriate format for local labels in case
446 the system doesn't insert underscores in front of user generated
448 ASM_GENERATE_INTERNAL_LABEL (lscope_label_name
, "Lscope", scope_labelno
);
449 targetm
.asm_out
.internal_label (asm_out_file
, "Lscope", scope_labelno
);
452 /* The N_FUN tag at the end of the function is a GNU extension,
453 which may be undesirable, and is unnecessary if we do not have
455 if (!use_gnu_debug_info_extensions
456 || NO_DBX_FUNCTION_END
457 || !targetm
.have_named_sections
)
460 /* By convention, GCC will mark the end of a function with an N_FUN
461 symbol and an empty string. */
462 #ifdef DBX_OUTPUT_NFUN
463 DBX_OUTPUT_NFUN (asm_out_file
, lscope_label_name
, current_function_decl
);
465 fprintf (asm_out_file
, "%s\"\",%d,0,0,", ASM_STABS_OP
, N_FUN
);
466 assemble_name (asm_out_file
, lscope_label_name
);
467 putc ('-', asm_out_file
);
468 assemble_name (asm_out_file
, XSTR (XEXP (DECL_RTL (current_function_decl
), 0), 0));
469 fprintf (asm_out_file
, "\n");
472 if (!NO_DBX_BNSYM_ENSYM
&& !flag_debug_only_used_symbols
)
473 fprintf (asm_out_file
, "%s%d,0,0\n", ASM_STABD_OP
, N_ENSYM
);
475 #endif /* DBX_DEBUGGING_INFO */
477 #ifndef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
478 /* Get lang description for N_SO stab. */
481 get_lang_number (void)
483 const char *language_string
= lang_hooks
.name
;
485 if (strcmp (language_string
, "GNU C") == 0)
487 else if (strcmp (language_string
, "GNU C++") == 0)
489 else if (strcmp (language_string
, "GNU F77") == 0)
491 else if (strcmp (language_string
, "GNU F95") == 0)
492 return N_SO_FORTRAN90
; /* CHECKME */
493 else if (strcmp (language_string
, "GNU Pascal") == 0)
495 else if (strcmp (language_string
, "GNU Objective-C") == 0)
503 /* At the beginning of compilation, start writing the symbol table.
504 Initialize `typevec' and output the standard data types of C. */
507 dbxout_init (const char *input_file_name
)
509 char ltext_label_name
[100];
510 tree syms
= lang_hooks
.decls
.getdecls ();
513 typevec
= ggc_calloc (typevec_len
, sizeof typevec
[0]);
515 /* Convert Ltext into the appropriate format for local labels in case
516 the system doesn't insert underscores in front of user generated
518 ASM_GENERATE_INTERNAL_LABEL (ltext_label_name
, "Ltext", 0);
520 /* Put the current working directory in an N_SO symbol. */
521 if (use_gnu_debug_info_extensions
)
523 static const char *cwd
;
527 cwd
= get_src_pwd ();
530 else if (!IS_DIR_SEPARATOR (cwd
[strlen (cwd
) - 1]))
531 cwd
= concat (cwd
, "/", NULL
);
534 #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
535 DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asm_out_file
, cwd
);
536 #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
537 fprintf (asm_out_file
, "%s", ASM_STABS_OP
);
538 output_quoted_string (asm_out_file
, cwd
);
539 fprintf (asm_out_file
, ",%d,0,%d,", N_SO
, get_lang_number ());
540 assemble_name (asm_out_file
, ltext_label_name
);
541 fputc ('\n', asm_out_file
);
542 #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
545 #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME
546 DBX_OUTPUT_MAIN_SOURCE_FILENAME (asm_out_file
, input_file_name
);
547 #else /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */
548 /* We include outputting `Ltext:' here,
549 because that gives you a way to override it. */
550 /* Used to put `Ltext:' before the reference, but that loses on sun 4. */
551 fprintf (asm_out_file
, "%s", ASM_STABS_OP
);
552 output_quoted_string (asm_out_file
, input_file_name
);
553 fprintf (asm_out_file
, ",%d,0,%d,", N_SO
, get_lang_number ());
554 assemble_name (asm_out_file
, ltext_label_name
);
555 fputc ('\n', asm_out_file
);
557 targetm
.asm_out
.internal_label (asm_out_file
, "Ltext", 0);
558 #endif /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */
560 #ifdef DBX_OUTPUT_GCC_MARKER
561 DBX_OUTPUT_GCC_MARKER (asm_out_file
);
563 /* Emit an N_OPT stab to indicate that this file was compiled by GCC.
564 The string used is historical. */
565 fprintf (asm_out_file
, "%s\"gcc2_compiled.\",%d,0,0,0\n",
566 ASM_STABS_OP
, N_OPT
);
569 base_input_file
= lastfile
= input_file_name
;
571 next_type_number
= 1;
574 current_file
= xmalloc (sizeof *current_file
);
575 current_file
->next
= NULL
;
576 current_file
->file_number
= 0;
577 current_file
->next_type_number
= 1;
578 next_file_number
= 1;
579 current_file
->prev
= NULL
;
580 current_file
->bincl_status
= BINCL_NOT_REQUIRED
;
581 current_file
->pending_bincl_name
= NULL
;
584 /* Get all permanent types that have typedef names, and output them
585 all, except for those already output. Some language front ends
586 put these declarations in the top-level scope; some do not;
587 the latter are responsible for calling debug_hooks->type_decl from
588 their record_builtin_type function. */
589 dbxout_typedefs (syms
);
594 for (t
= nreverse (preinit_symbols
); t
; t
= TREE_CHAIN (t
))
595 dbxout_symbol (TREE_VALUE (t
), 0);
600 /* Output any typedef names for types described by TYPE_DECLs in SYMS. */
603 dbxout_typedefs (tree syms
)
605 for (; syms
!= NULL_TREE
; syms
= TREE_CHAIN (syms
))
607 if (TREE_CODE (syms
) == TYPE_DECL
)
609 tree type
= TREE_TYPE (syms
);
611 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
612 && COMPLETE_OR_VOID_TYPE_P (type
)
613 && ! TREE_ASM_WRITTEN (TYPE_NAME (type
)))
614 dbxout_symbol (TYPE_NAME (type
), 0);
620 /* Emit BINCL stab using given name. */
622 emit_bincl_stab (const char *name
)
624 fprintf (asm_out_file
, "%s", ASM_STABS_OP
);
625 output_quoted_string (asm_out_file
, name
);
626 fprintf (asm_out_file
, ",%d,0,0,0\n", N_BINCL
);
629 /* If there are pending bincls then it is time to emit all of them. */
632 emit_pending_bincls_if_required (void)
635 emit_pending_bincls ();
638 /* Emit all pending bincls. */
641 emit_pending_bincls (void)
643 struct dbx_file
*f
= current_file
;
645 /* Find first pending bincl. */
646 while (f
->bincl_status
== BINCL_PENDING
)
649 /* Now emit all bincls. */
654 if (f
->bincl_status
== BINCL_PENDING
)
656 emit_bincl_stab (f
->pending_bincl_name
);
658 /* Update file number and status. */
659 f
->file_number
= next_file_number
++;
660 f
->bincl_status
= BINCL_PROCESSED
;
662 if (f
== current_file
)
667 /* All pending bincls have been emitted. */
674 emit_pending_bincls_if_required (void) {}
677 /* Change to reading from a new source file. Generate a N_BINCL stab. */
680 dbxout_start_source_file (unsigned int line ATTRIBUTE_UNUSED
,
681 const char *filename ATTRIBUTE_UNUSED
)
684 struct dbx_file
*n
= xmalloc (sizeof *n
);
686 n
->next
= current_file
;
687 n
->next_type_number
= 1;
688 /* Do not assign file number now.
689 Delay it until we actually emit BINCL. */
692 current_file
->prev
= n
;
693 n
->bincl_status
= BINCL_PENDING
;
694 n
->pending_bincl_name
= filename
;
700 /* Revert to reading a previous source file. Generate a N_EINCL stab. */
703 dbxout_end_source_file (unsigned int line ATTRIBUTE_UNUSED
)
706 /* Emit EINCL stab only if BINCL is not pending. */
707 if (current_file
->bincl_status
== BINCL_PROCESSED
)
708 fprintf (asm_out_file
, "%s%d,0,0,0\n", ASM_STABN_OP
, N_EINCL
);
709 current_file
->bincl_status
= BINCL_NOT_REQUIRED
;
710 current_file
= current_file
->next
;
714 /* Handle a few odd cases that occur when trying to make PCH files work. */
717 dbxout_handle_pch (unsigned at_end
)
721 /* When using the PCH, this file will be included, so we need to output
723 dbxout_start_source_file (0, lastfile
);
725 /* The base file when using the PCH won't be the same as
726 the base file when it's being generated. */
731 /* ... and an EINCL. */
732 dbxout_end_source_file (0);
734 /* Deal with cases where 'lastfile' was never actually changed. */
735 lastfile_is_base
= lastfile
== NULL
;
739 #if defined (DBX_DEBUGGING_INFO)
740 /* Output debugging info to FILE to switch to sourcefile FILENAME. */
743 dbxout_source_file (FILE *file
, const char *filename
)
745 if (lastfile
== 0 && lastfile_is_base
)
747 lastfile
= base_input_file
;
748 lastfile_is_base
= 0;
751 if (filename
&& (lastfile
== 0 || strcmp (filename
, lastfile
)))
753 char ltext_label_name
[100];
755 ASM_GENERATE_INTERNAL_LABEL (ltext_label_name
, "Ltext",
756 source_label_number
);
757 fprintf (file
, "%s", ASM_STABS_OP
);
758 output_quoted_string (file
, filename
);
759 fprintf (asm_out_file
, ",%d,0,0,", N_SOL
);
760 assemble_name (asm_out_file
, ltext_label_name
);
761 fputc ('\n', asm_out_file
);
762 if (current_function_decl
!= NULL_TREE
763 && DECL_SECTION_NAME (current_function_decl
) != NULL_TREE
)
764 ; /* Don't change section amid function. */
767 if (!in_text_section () && !in_unlikely_text_section ())
770 targetm
.asm_out
.internal_label (file
, "Ltext", source_label_number
);
771 source_label_number
++;
776 /* Output N_BNSYM and line number symbol entry. */
779 dbxout_begin_prologue (unsigned int lineno
, const char *filename
)
781 if (use_gnu_debug_info_extensions
782 && !NO_DBX_FUNCTION_END
783 && !NO_DBX_BNSYM_ENSYM
784 && !flag_debug_only_used_symbols
)
785 fprintf (asm_out_file
, "%s%d,0,0\n", ASM_STABD_OP
, N_BNSYM
);
787 dbxout_source_line (lineno
, filename
);
790 /* Output a line number symbol entry for source file FILENAME and line
794 dbxout_source_line (unsigned int lineno
, const char *filename
)
796 dbxout_source_file (asm_out_file
, filename
);
798 #ifdef DBX_OUTPUT_SOURCE_LINE
799 dbxout_source_line_counter
+= 1;
800 DBX_OUTPUT_SOURCE_LINE (asm_out_file
, lineno
, dbxout_source_line_counter
);
802 if (DBX_LINES_FUNCTION_RELATIVE
)
805 dbxout_source_line_counter
+= 1;
807 ASM_GENERATE_INTERNAL_LABEL (label
, "LM", dbxout_source_line_counter
);
808 fprintf (asm_out_file
, "%s%d,0,%d,", ASM_STABN_OP
, N_SLINE
, lineno
);
809 assemble_name (asm_out_file
, label
);
810 putc ('-', asm_out_file
);
811 assemble_name (asm_out_file
,
812 XSTR (XEXP (DECL_RTL (current_function_decl
), 0), 0));
813 putc ('\n', asm_out_file
);
814 targetm
.asm_out
.internal_label (asm_out_file
, "LM",
815 dbxout_source_line_counter
);
818 fprintf (asm_out_file
, "%s%d,0,%d\n", ASM_STABD_OP
, N_SLINE
, lineno
);
822 /* Describe the beginning of an internal block within a function. */
825 dbxout_begin_block (unsigned int line ATTRIBUTE_UNUSED
, unsigned int n
)
827 emit_pending_bincls_if_required ();
828 targetm
.asm_out
.internal_label (asm_out_file
, "LBB", n
);
831 /* Describe the end line-number of an internal block within a function. */
834 dbxout_end_block (unsigned int line ATTRIBUTE_UNUSED
, unsigned int n
)
836 emit_pending_bincls_if_required ();
837 targetm
.asm_out
.internal_label (asm_out_file
, "LBE", n
);
840 /* Output dbx data for a function definition.
841 This includes a definition of the function name itself (a symbol),
842 definitions of the parameters (locating them in the parameter list)
843 and then output the block that makes up the function's body
844 (including all the auto variables of the function). */
847 dbxout_function_decl (tree decl
)
849 emit_pending_bincls_if_required ();
850 #ifndef DBX_FUNCTION_FIRST
851 dbxout_begin_function (decl
);
853 dbxout_block (DECL_INITIAL (decl
), 0, DECL_ARGUMENTS (decl
));
854 dbxout_function_end ();
857 #endif /* DBX_DEBUGGING_INFO */
859 /* Debug information for a global DECL. Called from toplev.c after
860 compilation proper has finished. */
862 dbxout_global_decl (tree decl
)
864 if (TREE_CODE (decl
) == VAR_DECL
865 && ! DECL_EXTERNAL (decl
)
866 && DECL_RTL_SET_P (decl
)) /* Not necessary? */
868 int saved_tree_used
= TREE_USED (decl
);
869 TREE_USED (decl
) = 1;
870 dbxout_symbol (decl
, 0);
871 TREE_USED (decl
) = saved_tree_used
;
875 /* This is just a function-type adapter; dbxout_symbol does exactly
876 what we want but returns an int. */
878 dbxout_type_decl (tree decl
, int local
)
880 dbxout_symbol (decl
, local
);
883 /* At the end of compilation, finish writing the symbol table.
884 The default is to call debug_free_queue but do nothing else. */
887 dbxout_finish (const char *filename ATTRIBUTE_UNUSED
)
889 #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END
890 DBX_OUTPUT_MAIN_SOURCE_FILE_END (asm_out_file
, filename
);
891 #elif defined DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
893 char letext_label
[100];
894 ASM_GENERATE_INTERNAL_LABEL (letext_label
, "Letext", 0);
895 fprintf (asm_out_file
, "%s\"\",%d,0,0,", ASM_STABS_OP
, N_SO
);
896 assemble_name (asm_out_file
, letext_label
);
897 putc ('\n', asm_out_file
);
898 targetm
.asm_out
.internal_label (asm_out_file
, "Letext", 0);
904 /* Output the index of a type. */
907 dbxout_type_index (tree type
)
909 #ifndef DBX_USE_BINCL
910 fprintf (asm_out_file
, "%d", TYPE_SYMTAB_ADDRESS (type
));
913 struct typeinfo
*t
= &typevec
[TYPE_SYMTAB_ADDRESS (type
)];
914 fprintf (asm_out_file
, "(%d,%d)", t
->file_number
, t
->type_number
);
919 #if DBX_CONTIN_LENGTH > 0
920 /* Continue a symbol-description that gets too big.
921 End one symbol table entry with a double-backslash
922 and start a new one, eventually producing something like
923 .stabs "start......\\",code,0,value
924 .stabs "...rest",code,0,value */
927 dbxout_continue (void)
929 emit_pending_bincls_if_required ();
930 #ifdef DBX_CONTIN_CHAR
931 fprintf (asm_out_file
, "%c", DBX_CONTIN_CHAR
);
933 fprintf (asm_out_file
, "\\\\");
935 dbxout_finish_symbol (NULL_TREE
);
936 fprintf (asm_out_file
, "%s\"", ASM_STABS_OP
);
937 current_sym_nchars
= 0;
939 #endif /* DBX_CONTIN_LENGTH > 0 */
941 /* Subroutine of `dbxout_type'. Output the type fields of TYPE.
942 This must be a separate function because anonymous unions require
946 dbxout_type_fields (tree type
)
950 /* Output the name, type, position (in bits), size (in bits) of each
951 field that we can support. */
952 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
954 /* If one of the nodes is an error_mark or its type is then
956 if (tem
== error_mark_node
|| TREE_TYPE (tem
) == error_mark_node
)
959 /* Omit here local type decls until we know how to support them. */
960 if (TREE_CODE (tem
) == TYPE_DECL
961 /* Omit fields whose position or size are variable or too large to
963 || (TREE_CODE (tem
) == FIELD_DECL
964 && (! host_integerp (bit_position (tem
), 0)
966 || ! host_integerp (DECL_SIZE (tem
), 1)))
967 /* Omit here the nameless fields that are used to skip bits. */
968 || DECL_IGNORED_P (tem
))
971 else if (TREE_CODE (tem
) != CONST_DECL
)
973 /* Continue the line if necessary,
974 but not before the first field. */
975 if (tem
!= TYPE_FIELDS (type
))
980 fprintf (asm_out_file
, "%s:", IDENTIFIER_POINTER (DECL_NAME (tem
)));
981 CHARS (2 + IDENTIFIER_LENGTH (DECL_NAME (tem
)));
985 fprintf (asm_out_file
, ":");
989 if (use_gnu_debug_info_extensions
990 && (TREE_PRIVATE (tem
) || TREE_PROTECTED (tem
)
991 || TREE_CODE (tem
) != FIELD_DECL
))
993 have_used_extensions
= 1;
994 putc ('/', asm_out_file
);
995 putc ((TREE_PRIVATE (tem
) ? '0'
996 : TREE_PROTECTED (tem
) ? '1' : '2'),
1001 dbxout_type ((TREE_CODE (tem
) == FIELD_DECL
1002 && DECL_BIT_FIELD_TYPE (tem
))
1003 ? DECL_BIT_FIELD_TYPE (tem
) : TREE_TYPE (tem
), 0);
1005 if (TREE_CODE (tem
) == VAR_DECL
)
1007 if (TREE_STATIC (tem
) && use_gnu_debug_info_extensions
)
1009 tree name
= DECL_ASSEMBLER_NAME (tem
);
1011 have_used_extensions
= 1;
1012 fprintf (asm_out_file
, ":%s;", IDENTIFIER_POINTER (name
));
1013 CHARS (IDENTIFIER_LENGTH (name
) + 2);
1017 /* If TEM is non-static, GDB won't understand it. */
1018 fprintf (asm_out_file
, ",0,0;");
1024 putc (',', asm_out_file
);
1025 print_wide_int (int_bit_position (tem
));
1026 putc (',', asm_out_file
);
1027 print_wide_int (tree_low_cst (DECL_SIZE (tem
), 1));
1028 putc (';', asm_out_file
);
1035 /* Subroutine of `dbxout_type_methods'. Output debug info about the
1036 method described DECL. DEBUG_NAME is an encoding of the method's
1037 type signature. ??? We may be able to do without DEBUG_NAME altogether
1041 dbxout_type_method_1 (tree decl
, const char *debug_name
)
1045 if (TREE_CODE (TREE_TYPE (decl
)) == FUNCTION_TYPE
)
1047 else /* it's a METHOD_TYPE. */
1049 tree firstarg
= TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl
)));
1050 /* A for normal functions.
1051 B for `const' member functions.
1052 C for `volatile' member functions.
1053 D for `const volatile' member functions. */
1054 if (TYPE_READONLY (TREE_TYPE (firstarg
)))
1056 if (TYPE_VOLATILE (TREE_TYPE (firstarg
)))
1059 if (DECL_VINDEX (decl
))
1065 fprintf (asm_out_file
, ":%s;%c%c%c", debug_name
,
1066 TREE_PRIVATE (decl
) ? '0'
1067 : TREE_PROTECTED (decl
) ? '1' : '2', c1
, c2
);
1068 CHARS (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl
)) + 6
1069 - (debug_name
- IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
))));
1071 if (DECL_VINDEX (decl
) && host_integerp (DECL_VINDEX (decl
), 0))
1073 print_wide_int (tree_low_cst (DECL_VINDEX (decl
), 0));
1074 putc (';', asm_out_file
);
1076 dbxout_type (DECL_CONTEXT (decl
), 0);
1077 fprintf (asm_out_file
, ";");
1082 /* Subroutine of `dbxout_type'. Output debug info about the methods defined
1086 dbxout_type_methods (tree type
)
1088 /* C++: put out the method names and their parameter lists */
1089 tree methods
= TYPE_METHODS (type
);
1093 char formatted_type_identifier_length
[16];
1094 int type_identifier_length
;
1096 if (methods
== NULL_TREE
)
1099 type_encoding
= DECL_NAME (TYPE_NAME (type
));
1101 type_identifier_length
= IDENTIFIER_LENGTH (type_encoding
);
1103 sprintf (formatted_type_identifier_length
, "%d", type_identifier_length
);
1105 if (TREE_CODE (methods
) != TREE_VEC
)
1107 else if (TREE_VEC_ELT (methods
, 0) != NULL_TREE
)
1108 fndecl
= TREE_VEC_ELT (methods
, 0);
1110 fndecl
= TREE_VEC_ELT (methods
, 1);
1114 int need_prefix
= 1;
1116 /* Group together all the methods for the same operation.
1117 These differ in the types of the arguments. */
1118 for (last
= NULL_TREE
;
1119 fndecl
&& (last
== NULL_TREE
|| DECL_NAME (fndecl
) == DECL_NAME (last
));
1120 fndecl
= TREE_CHAIN (fndecl
))
1121 /* Output the name of the field (after overloading), as
1122 well as the name of the field before overloading, along
1123 with its parameter list */
1125 /* This is the "mangled" name of the method.
1126 It encodes the argument types. */
1127 const char *debug_name
;
1129 /* Skip methods that aren't FUNCTION_DECLs. (In C++, these
1130 include TEMPLATE_DECLs.) The debugger doesn't know what
1131 to do with such entities anyhow. */
1132 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
1135 debug_name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl
));
1141 /* Also ignore abstract methods; those are only interesting to
1142 the DWARF backends. */
1143 if (DECL_IGNORED_P (fndecl
) || DECL_ABSTRACT (fndecl
))
1146 /* Redundantly output the plain name, since that's what gdb
1150 tree name
= DECL_NAME (fndecl
);
1151 fprintf (asm_out_file
, "%s::", IDENTIFIER_POINTER (name
));
1152 CHARS (IDENTIFIER_LENGTH (name
) + 2);
1156 dbxout_type (TREE_TYPE (fndecl
), 0);
1158 dbxout_type_method_1 (fndecl
, debug_name
);
1162 putc (';', asm_out_file
);
1168 /* Emit a "range" type specification, which has the form:
1169 "r<index type>;<lower bound>;<upper bound>;".
1170 TYPE is an INTEGER_TYPE. */
1173 dbxout_range_type (tree type
)
1175 fprintf (asm_out_file
, "r");
1176 if (TREE_TYPE (type
))
1177 dbxout_type (TREE_TYPE (type
), 0);
1178 else if (TREE_CODE (type
) != INTEGER_TYPE
)
1179 dbxout_type (type
, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */
1182 /* Traditionally, we made sure 'int' was type 1, and builtin types
1183 were defined to be sub-ranges of int. Unfortunately, this
1184 does not allow us to distinguish true sub-ranges from integer
1185 types. So, instead we define integer (non-sub-range) types as
1186 sub-ranges of themselves. This matters for Chill. If this isn't
1187 a subrange type, then we want to define it in terms of itself.
1188 However, in C, this may be an anonymous integer type, and we don't
1189 want to emit debug info referring to it. Just calling
1190 dbxout_type_index won't work anyways, because the type hasn't been
1191 defined yet. We make this work for both cases by checked to see
1192 whether this is a defined type, referring to it if it is, and using
1194 if (TYPE_SYMTAB_ADDRESS (type
) != 0)
1195 dbxout_type_index (type
);
1197 dbxout_type_index (integer_type_node
);
1200 if (TYPE_MIN_VALUE (type
) != 0
1201 && host_integerp (TYPE_MIN_VALUE (type
), 0))
1203 putc (';', asm_out_file
);
1205 if (print_int_cst_bounds_in_octal_p (type
))
1206 print_int_cst_octal (TYPE_MIN_VALUE (type
));
1208 print_wide_int (tree_low_cst (TYPE_MIN_VALUE (type
), 0));
1212 fprintf (asm_out_file
, ";0");
1216 if (TYPE_MAX_VALUE (type
) != 0
1217 && host_integerp (TYPE_MAX_VALUE (type
), 0))
1219 putc (';', asm_out_file
);
1221 if (print_int_cst_bounds_in_octal_p (type
))
1222 print_int_cst_octal (TYPE_MAX_VALUE (type
));
1224 print_wide_int (tree_low_cst (TYPE_MAX_VALUE (type
), 0));
1225 putc (';', asm_out_file
);
1230 fprintf (asm_out_file
, ";-1;");
1236 /* Output a reference to a type. If the type has not yet been
1237 described in the dbx output, output its definition now.
1238 For a type already defined, just refer to its definition
1239 using the type number.
1241 If FULL is nonzero, and the type has been described only with
1242 a forward-reference, output the definition now.
1243 If FULL is zero in this case, just refer to the forward-reference
1244 using the number previously allocated. */
1247 dbxout_type (tree type
, int full
)
1251 static int anonymous_type_number
= 0;
1253 if (TREE_CODE (type
) == VECTOR_TYPE
)
1254 /* The frontend feeds us a representation for the vector as a struct
1255 containing an array. Pull out the array type. */
1256 type
= TREE_TYPE (TYPE_FIELDS (TYPE_DEBUG_REPRESENTATION_TYPE (type
)));
1258 /* If there was an input error and we don't really have a type,
1259 avoid crashing and write something that is at least valid
1260 by assuming `int'. */
1261 if (type
== error_mark_node
)
1262 type
= integer_type_node
;
1265 if (TYPE_NAME (type
)
1266 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1267 && TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type
)))
1271 /* Try to find the "main variant" with the same name. */
1272 if (TYPE_NAME (type
) && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1273 && DECL_ORIGINAL_TYPE (TYPE_NAME (type
)))
1274 main_variant
= TREE_TYPE (TYPE_NAME (type
));
1276 main_variant
= TYPE_MAIN_VARIANT (type
);
1278 /* If we are not using extensions, stabs does not distinguish const and
1279 volatile, so there is no need to make them separate types. */
1280 if (!use_gnu_debug_info_extensions
)
1281 type
= main_variant
;
1283 if (TYPE_SYMTAB_ADDRESS (type
) == 0)
1285 /* Type has no dbx number assigned. Assign next available number. */
1286 TYPE_SYMTAB_ADDRESS (type
) = next_type_number
++;
1288 /* Make sure type vector is long enough to record about this type. */
1290 if (next_type_number
== typevec_len
)
1293 = ggc_realloc (typevec
, (typevec_len
* 2 * sizeof typevec
[0]));
1294 memset (typevec
+ typevec_len
, 0, typevec_len
* sizeof typevec
[0]);
1298 #ifdef DBX_USE_BINCL
1299 emit_pending_bincls_if_required ();
1300 typevec
[TYPE_SYMTAB_ADDRESS (type
)].file_number
1301 = current_file
->file_number
;
1302 typevec
[TYPE_SYMTAB_ADDRESS (type
)].type_number
1303 = current_file
->next_type_number
++;
1307 if (flag_debug_only_used_symbols
)
1309 if ((TREE_CODE (type
) == RECORD_TYPE
1310 || TREE_CODE (type
) == UNION_TYPE
1311 || TREE_CODE (type
) == QUAL_UNION_TYPE
1312 || TREE_CODE (type
) == ENUMERAL_TYPE
)
1313 && TYPE_STUB_DECL (type
)
1314 && DECL_P (TYPE_STUB_DECL (type
))
1315 && ! DECL_IGNORED_P (TYPE_STUB_DECL (type
)))
1316 debug_queue_symbol (TYPE_STUB_DECL (type
));
1317 else if (TYPE_NAME (type
)
1318 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
1319 debug_queue_symbol (TYPE_NAME (type
));
1322 /* Output the number of this type, to refer to it. */
1323 dbxout_type_index (type
);
1325 #ifdef DBX_TYPE_DEFINED
1326 if (DBX_TYPE_DEFINED (type
))
1330 /* If this type's definition has been output or is now being output,
1333 switch (typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
)
1338 /* If we have already had a cross reference,
1339 and either that's all we want or that's the best we could do,
1340 don't repeat the cross reference.
1341 Sun dbx crashes if we do. */
1342 if (! full
|| !COMPLETE_TYPE_P (type
)
1343 /* No way in DBX fmt to describe a variable size. */
1344 || ! host_integerp (TYPE_SIZE (type
), 1))
1352 /* For systems where dbx output does not allow the `=xsNAME:' syntax,
1353 leave the type-number completely undefined rather than output
1354 a cross-reference. If we have already used GNU debug info extensions,
1355 then it is OK to output a cross reference. This is necessary to get
1356 proper C++ debug output. */
1357 if ((TREE_CODE (type
) == RECORD_TYPE
|| TREE_CODE (type
) == UNION_TYPE
1358 || TREE_CODE (type
) == QUAL_UNION_TYPE
1359 || TREE_CODE (type
) == ENUMERAL_TYPE
)
1360 && ! use_gnu_debug_info_extensions
)
1361 /* We must use the same test here as we use twice below when deciding
1362 whether to emit a cross-reference. */
1363 if ((TYPE_NAME (type
) != 0
1364 && ! (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1365 && DECL_IGNORED_P (TYPE_NAME (type
)))
1367 || !COMPLETE_TYPE_P (type
)
1368 /* No way in DBX fmt to describe a variable size. */
1369 || ! host_integerp (TYPE_SIZE (type
), 1))
1371 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_XREF
;
1376 /* Output a definition now. */
1378 fprintf (asm_out_file
, "=");
1381 /* Mark it as defined, so that if it is self-referent
1382 we will not get into an infinite recursion of definitions. */
1384 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_DEFINED
;
1386 /* If this type is a variant of some other, hand off. Types with
1387 different names are usefully distinguished. We only distinguish
1388 cv-qualified types if we're using extensions. */
1389 if (TYPE_READONLY (type
) > TYPE_READONLY (main_variant
))
1391 putc ('k', asm_out_file
);
1393 dbxout_type (build_type_variant (type
, 0, TYPE_VOLATILE (type
)), 0);
1396 else if (TYPE_VOLATILE (type
) > TYPE_VOLATILE (main_variant
))
1398 putc ('B', asm_out_file
);
1400 dbxout_type (build_type_variant (type
, TYPE_READONLY (type
), 0), 0);
1403 else if (main_variant
!= TYPE_MAIN_VARIANT (type
))
1405 if (flag_debug_only_used_symbols
)
1407 tree orig_type
= DECL_ORIGINAL_TYPE (TYPE_NAME (type
));
1409 if ((TREE_CODE (orig_type
) == RECORD_TYPE
1410 || TREE_CODE (orig_type
) == UNION_TYPE
1411 || TREE_CODE (orig_type
) == QUAL_UNION_TYPE
1412 || TREE_CODE (orig_type
) == ENUMERAL_TYPE
)
1413 && TYPE_STUB_DECL (orig_type
)
1414 && ! DECL_IGNORED_P (TYPE_STUB_DECL (orig_type
)))
1415 debug_queue_symbol (TYPE_STUB_DECL (orig_type
));
1417 /* 'type' is a typedef; output the type it refers to. */
1418 dbxout_type (DECL_ORIGINAL_TYPE (TYPE_NAME (type
)), 0);
1421 /* else continue. */
1423 switch (TREE_CODE (type
))
1427 /* For a void type, just define it as itself; i.e., "5=5".
1428 This makes us consider it defined
1429 without saying what it is. The debugger will make it
1430 a void type when the reference is seen, and nothing will
1431 ever override that default. */
1432 dbxout_type_index (type
);
1436 if (type
== char_type_node
&& ! TYPE_UNSIGNED (type
))
1438 /* Output the type `char' as a subrange of itself!
1439 I don't understand this definition, just copied it
1440 from the output of pcc.
1441 This used to use `r2' explicitly and we used to
1442 take care to make sure that `char' was type number 2. */
1443 fprintf (asm_out_file
, "r");
1445 dbxout_type_index (type
);
1446 fprintf (asm_out_file
, ";0;127;");
1450 /* If this is a subtype of another integer type, always prefer to
1451 write it as a subtype. */
1452 else if (TREE_TYPE (type
) != 0
1453 && TREE_CODE (TREE_TYPE (type
)) == INTEGER_TYPE
)
1455 /* If the size is non-standard, say what it is if we can use
1458 if (use_gnu_debug_info_extensions
1459 && TYPE_PRECISION (type
) != TYPE_PRECISION (integer_type_node
))
1461 have_used_extensions
= 1;
1462 fprintf (asm_out_file
, "@s%d;", TYPE_PRECISION (type
));
1466 dbxout_range_type (type
);
1471 /* If the size is non-standard, say what it is if we can use
1474 if (use_gnu_debug_info_extensions
1475 && TYPE_PRECISION (type
) != TYPE_PRECISION (integer_type_node
))
1477 have_used_extensions
= 1;
1478 fprintf (asm_out_file
, "@s%d;", TYPE_PRECISION (type
));
1482 if (print_int_cst_bounds_in_octal_p (type
))
1484 fprintf (asm_out_file
, "r");
1487 /* If this type derives from another type, output type index of
1488 parent type. This is particularly important when parent type
1489 is an enumerated type, because not generating the parent type
1490 index would transform the definition of this enumerated type
1491 into a plain unsigned type. */
1492 if (TREE_TYPE (type
) != 0)
1493 dbxout_type_index (TREE_TYPE (type
));
1495 dbxout_type_index (type
);
1497 fprintf (asm_out_file
, ";");
1499 print_int_cst_octal (TYPE_MIN_VALUE (type
));
1500 fprintf (asm_out_file
, ";");
1502 print_int_cst_octal (TYPE_MAX_VALUE (type
));
1503 fprintf (asm_out_file
, ";");
1508 /* Output other integer types as subranges of `int'. */
1509 dbxout_range_type (type
);
1515 /* This used to say `r1' and we used to take care
1516 to make sure that `int' was type number 1. */
1517 fprintf (asm_out_file
, "r");
1519 dbxout_type_index (integer_type_node
);
1520 putc (';', asm_out_file
);
1522 print_wide_int (int_size_in_bytes (type
));
1523 fputs (";0;", asm_out_file
);
1528 if (use_gnu_debug_info_extensions
)
1530 have_used_extensions
= 1;
1531 fputs ("@s", asm_out_file
);
1533 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1534 fputs (";-20;", asm_out_file
);
1539 /* Output the type `char' as a subrange of itself.
1540 That is what pcc seems to do. */
1541 fprintf (asm_out_file
, "r");
1543 dbxout_type_index (char_type_node
);
1544 fprintf (asm_out_file
, ";0;%d;", TYPE_UNSIGNED (type
) ? 255 : 127);
1550 if (use_gnu_debug_info_extensions
)
1552 have_used_extensions
= 1;
1553 fputs ("@s", asm_out_file
);
1555 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1556 fputs (";-16;", asm_out_file
);
1559 else /* Define as enumeral type (False, True) */
1561 fprintf (asm_out_file
, "eFalse:0,True:1,;");
1567 putc ('d', asm_out_file
);
1569 dbxout_type (TREE_TYPE (type
), 0);
1573 /* Differs from the REAL_TYPE by its new data type number.
1574 R3 is NF_COMPLEX. We don't try to use any of the other NF_*
1575 codes since gdb doesn't care anyway. */
1577 if (TREE_CODE (TREE_TYPE (type
)) == REAL_TYPE
)
1579 fputs ("R3;", asm_out_file
);
1581 print_wide_int (2 * int_size_in_bytes (TREE_TYPE (type
)));
1582 fputs (";0;", asm_out_file
);
1587 /* Output a complex integer type as a structure,
1588 pending some other way to do it. */
1589 putc ('s', asm_out_file
);
1591 print_wide_int (int_size_in_bytes (type
));
1592 fprintf (asm_out_file
, "real:");
1595 dbxout_type (TREE_TYPE (type
), 0);
1596 fprintf (asm_out_file
, ",0,%d;", TYPE_PRECISION (TREE_TYPE (type
)));
1598 fprintf (asm_out_file
, "imag:");
1600 dbxout_type (TREE_TYPE (type
), 0);
1601 fprintf (asm_out_file
, ",%d,%d;;", TYPE_PRECISION (TREE_TYPE (type
)),
1602 TYPE_PRECISION (TREE_TYPE (type
)));
1608 if (use_gnu_debug_info_extensions
)
1610 have_used_extensions
= 1;
1611 fputs ("@s", asm_out_file
);
1613 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1614 putc (';', asm_out_file
);
1617 /* Check if a bitstring type, which in Chill is
1618 different from a [power]set. */
1619 if (TYPE_STRING_FLAG (type
))
1621 fprintf (asm_out_file
, "@S;");
1625 putc ('S', asm_out_file
);
1627 dbxout_type (TYPE_DOMAIN (type
), 0);
1631 /* Make arrays of packed bits look like bitstrings for chill. */
1632 if (TYPE_PACKED (type
) && use_gnu_debug_info_extensions
)
1634 have_used_extensions
= 1;
1635 fputs ("@s", asm_out_file
);
1637 print_wide_int (BITS_PER_UNIT
* int_size_in_bytes (type
));
1638 fprintf (asm_out_file
, ";@S;S");
1640 dbxout_type (TYPE_DOMAIN (type
), 0);
1644 /* Output "a" followed by a range type definition
1645 for the index type of the array
1646 followed by a reference to the target-type.
1647 ar1;0;N;M for a C array of type M and size N+1. */
1648 /* Check if a character string type, which in Chill is
1649 different from an array of characters. */
1650 if (TYPE_STRING_FLAG (type
) && use_gnu_debug_info_extensions
)
1652 have_used_extensions
= 1;
1653 fprintf (asm_out_file
, "@S;");
1656 tem
= TYPE_DOMAIN (type
);
1659 fprintf (asm_out_file
, "ar");
1661 dbxout_type_index (integer_type_node
);
1662 fprintf (asm_out_file
, ";0;-1;");
1667 fprintf (asm_out_file
, "a");
1669 dbxout_range_type (tem
);
1672 dbxout_type (TREE_TYPE (type
), 0);
1677 case QUAL_UNION_TYPE
:
1679 tree binfo
= TYPE_BINFO (type
);
1681 /* Output a structure type. We must use the same test here as we
1682 use in the DBX_NO_XREFS case above. */
1683 if ((TYPE_NAME (type
) != 0
1684 && ! (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1685 && DECL_IGNORED_P (TYPE_NAME (type
)))
1687 || !COMPLETE_TYPE_P (type
)
1688 /* No way in DBX fmt to describe a variable size. */
1689 || ! host_integerp (TYPE_SIZE (type
), 1))
1691 /* If the type is just a cross reference, output one
1692 and mark the type as partially described.
1693 If it later becomes defined, we will output
1694 its real definition.
1695 If the type has a name, don't nest its definition within
1696 another type's definition; instead, output an xref
1697 and let the definition come when the name is defined. */
1698 fputs ((TREE_CODE (type
) == RECORD_TYPE
) ? "xs" : "xu", asm_out_file
);
1700 if (TYPE_NAME (type
) != 0)
1701 dbxout_type_name (type
);
1704 fprintf (asm_out_file
, "$$%d", anonymous_type_number
++);
1708 fprintf (asm_out_file
, ":");
1710 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_XREF
;
1714 /* Identify record or union, and print its size. */
1715 putc (((TREE_CODE (type
) == RECORD_TYPE
) ? 's' : 'u'), asm_out_file
);
1717 print_wide_int (int_size_in_bytes (type
));
1723 VEC (tree
) *accesses
= BINFO_BASE_ACCESSES (binfo
);
1725 if (use_gnu_debug_info_extensions
)
1727 if (BINFO_N_BASE_BINFOS (binfo
))
1729 have_used_extensions
= 1;
1730 fprintf (asm_out_file
, "!%u,", BINFO_N_BASE_BINFOS (binfo
));
1734 for (i
= 0; BINFO_BASE_ITERATE (binfo
, i
, child
); i
++)
1736 tree access
= (accesses
? VEC_index (tree
, accesses
, i
)
1737 : access_public_node
);
1739 if (use_gnu_debug_info_extensions
)
1741 have_used_extensions
= 1;
1742 putc (BINFO_VIRTUAL_P (child
) ? '1' : '0', asm_out_file
);
1743 putc (access
== access_public_node
? '2' :
1744 (access
== access_protected_node
? '1' :'0'),
1747 if (BINFO_VIRTUAL_P (child
)
1748 && strcmp (lang_hooks
.name
, "GNU C++") == 0)
1749 /* For a virtual base, print the (negative)
1750 offset within the vtable where we must look
1751 to find the necessary adjustment. */
1753 (tree_low_cst (BINFO_VPTR_FIELD (child
), 0)
1756 print_wide_int (tree_low_cst (BINFO_OFFSET (child
), 0)
1758 putc (',', asm_out_file
);
1760 dbxout_type (BINFO_TYPE (child
), 0);
1761 putc (';', asm_out_file
);
1766 /* Print out the base class information with
1767 fields which have the same names at the types
1769 dbxout_type_name (BINFO_TYPE (child
));
1770 putc (':', asm_out_file
);
1772 dbxout_type (BINFO_TYPE (child
), full
);
1773 putc (',', asm_out_file
);
1775 print_wide_int (tree_low_cst (BINFO_OFFSET (child
), 0)
1777 putc (',', asm_out_file
);
1780 (tree_low_cst (TYPE_SIZE (BINFO_TYPE (child
)), 0)
1782 putc (';', asm_out_file
);
1789 /* Write out the field declarations. */
1790 dbxout_type_fields (type
);
1791 if (use_gnu_debug_info_extensions
&& TYPE_METHODS (type
) != NULL_TREE
)
1793 have_used_extensions
= 1;
1794 dbxout_type_methods (type
);
1797 putc (';', asm_out_file
);
1800 if (use_gnu_debug_info_extensions
&& TREE_CODE (type
) == RECORD_TYPE
1801 /* Avoid the ~ if we don't really need it--it confuses dbx. */
1802 && TYPE_VFIELD (type
))
1804 have_used_extensions
= 1;
1806 /* Tell GDB+ that it may keep reading. */
1807 putc ('~', asm_out_file
);
1810 /* We need to write out info about what field this class
1811 uses as its "main" vtable pointer field, because if this
1812 field is inherited from a base class, GDB cannot necessarily
1813 figure out which field it's using in time. */
1814 if (TYPE_VFIELD (type
))
1816 putc ('%', asm_out_file
);
1818 dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type
)), 0);
1821 putc (';', asm_out_file
);
1827 /* We must use the same test here as we use in the DBX_NO_XREFS case
1828 above. We simplify it a bit since an enum will never have a variable
1830 if ((TYPE_NAME (type
) != 0
1831 && ! (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
1832 && DECL_IGNORED_P (TYPE_NAME (type
)))
1834 || !COMPLETE_TYPE_P (type
))
1836 fprintf (asm_out_file
, "xe");
1838 dbxout_type_name (type
);
1839 typevec
[TYPE_SYMTAB_ADDRESS (type
)].status
= TYPE_XREF
;
1840 putc (':', asm_out_file
);
1844 if (use_gnu_debug_info_extensions
1845 && TYPE_PRECISION (type
) != TYPE_PRECISION (integer_type_node
))
1847 fprintf (asm_out_file
, "@s%d;", TYPE_PRECISION (type
));
1851 putc ('e', asm_out_file
);
1853 for (tem
= TYPE_VALUES (type
); tem
; tem
= TREE_CHAIN (tem
))
1855 fprintf (asm_out_file
, "%s:", IDENTIFIER_POINTER (TREE_PURPOSE (tem
)));
1856 CHARS (IDENTIFIER_LENGTH (TREE_PURPOSE (tem
)) + 1);
1857 if (TREE_INT_CST_HIGH (TREE_VALUE (tem
)) == 0)
1858 print_wide_int (TREE_INT_CST_LOW (TREE_VALUE (tem
)));
1859 else if (TREE_INT_CST_HIGH (TREE_VALUE (tem
)) == -1
1860 && (HOST_WIDE_INT
) TREE_INT_CST_LOW (TREE_VALUE (tem
)) < 0)
1861 print_wide_int (TREE_INT_CST_LOW (TREE_VALUE (tem
)));
1863 print_int_cst_octal (TREE_VALUE (tem
));
1865 putc (',', asm_out_file
);
1867 if (TREE_CHAIN (tem
) != 0)
1871 putc (';', asm_out_file
);
1876 putc ('*', asm_out_file
);
1878 dbxout_type (TREE_TYPE (type
), 0);
1882 if (use_gnu_debug_info_extensions
)
1884 have_used_extensions
= 1;
1885 putc ('#', asm_out_file
);
1888 /* Write the argument types out longhand. */
1889 dbxout_type (TYPE_METHOD_BASETYPE (type
), 0);
1890 putc (',', asm_out_file
);
1892 dbxout_type (TREE_TYPE (type
), 0);
1893 dbxout_args (TYPE_ARG_TYPES (type
));
1894 putc (';', asm_out_file
);
1898 /* Treat it as a function type. */
1899 dbxout_type (TREE_TYPE (type
), 0);
1903 if (use_gnu_debug_info_extensions
)
1905 have_used_extensions
= 1;
1906 putc ('@', asm_out_file
);
1908 dbxout_type (TYPE_OFFSET_BASETYPE (type
), 0);
1909 putc (',', asm_out_file
);
1911 dbxout_type (TREE_TYPE (type
), 0);
1914 /* Should print as an int, because it is really just an offset. */
1915 dbxout_type (integer_type_node
, 0);
1918 case REFERENCE_TYPE
:
1919 if (use_gnu_debug_info_extensions
)
1920 have_used_extensions
= 1;
1921 putc (use_gnu_debug_info_extensions
? '&' : '*', asm_out_file
);
1923 dbxout_type (TREE_TYPE (type
), 0);
1927 putc ('f', asm_out_file
);
1929 dbxout_type (TREE_TYPE (type
), 0);
1937 /* Return nonzero if the given type represents an integer whose bounds
1938 should be printed in octal format. */
1941 print_int_cst_bounds_in_octal_p (tree type
)
1943 /* If we can use GDB extensions and the size is wider than a long
1944 (the size used by GDB to read them) or we may have trouble writing
1945 the bounds the usual way, write them in octal. Note the test is for
1946 the *target's* size of "long", not that of the host. The host test
1947 is just to make sure we can write it out in case the host wide int
1948 is narrower than the target "long".
1950 For unsigned types, we use octal if they are the same size or larger.
1951 This is because we print the bounds as signed decimal, and hence they
1952 can't span same size unsigned types. */
1954 if (use_gnu_debug_info_extensions
1955 && TYPE_MIN_VALUE (type
) != 0
1956 && TREE_CODE (TYPE_MIN_VALUE (type
)) == INTEGER_CST
1957 && TYPE_MAX_VALUE (type
) != 0
1958 && TREE_CODE (TYPE_MAX_VALUE (type
)) == INTEGER_CST
1959 && (TYPE_PRECISION (type
) > TYPE_PRECISION (integer_type_node
)
1960 || ((TYPE_PRECISION (type
) == TYPE_PRECISION (integer_type_node
))
1961 && TYPE_UNSIGNED (type
))
1962 || TYPE_PRECISION (type
) > HOST_BITS_PER_WIDE_INT
1963 || (TYPE_PRECISION (type
) == HOST_BITS_PER_WIDE_INT
1964 && TYPE_UNSIGNED (type
))))
1970 /* Print the value of integer constant C, in octal,
1971 handling double precision. */
1974 print_int_cst_octal (tree c
)
1976 unsigned HOST_WIDE_INT high
= TREE_INT_CST_HIGH (c
);
1977 unsigned HOST_WIDE_INT low
= TREE_INT_CST_LOW (c
);
1978 int excess
= (3 - (HOST_BITS_PER_WIDE_INT
% 3));
1979 unsigned int width
= TYPE_PRECISION (TREE_TYPE (c
));
1981 /* GDB wants constants with no extra leading "1" bits, so
1982 we need to remove any sign-extension that might be
1984 if (width
== HOST_BITS_PER_WIDE_INT
* 2)
1986 else if (width
> HOST_BITS_PER_WIDE_INT
)
1987 high
&= (((HOST_WIDE_INT
) 1 << (width
- HOST_BITS_PER_WIDE_INT
)) - 1);
1988 else if (width
== HOST_BITS_PER_WIDE_INT
)
1991 high
= 0, low
&= (((HOST_WIDE_INT
) 1 << width
) - 1);
1993 fprintf (asm_out_file
, "0");
1998 print_octal (high
, HOST_BITS_PER_WIDE_INT
/ 3);
1999 print_octal (low
, HOST_BITS_PER_WIDE_INT
/ 3);
2003 unsigned HOST_WIDE_INT beg
= high
>> excess
;
2004 unsigned HOST_WIDE_INT middle
2005 = ((high
& (((HOST_WIDE_INT
) 1 << excess
) - 1)) << (3 - excess
)
2006 | (low
>> (HOST_BITS_PER_WIDE_INT
/ 3 * 3)));
2007 unsigned HOST_WIDE_INT end
2008 = low
& (((unsigned HOST_WIDE_INT
) 1
2009 << (HOST_BITS_PER_WIDE_INT
/ 3 * 3))
2012 fprintf (asm_out_file
, "%o%01o", (int) beg
, (int) middle
);
2014 print_octal (end
, HOST_BITS_PER_WIDE_INT
/ 3);
2019 print_octal (unsigned HOST_WIDE_INT value
, int digits
)
2023 for (i
= digits
- 1; i
>= 0; i
--)
2024 fprintf (asm_out_file
, "%01o", (int) ((value
>> (3 * i
)) & 7));
2029 /* Output C in decimal while adjusting the number of digits written. */
2032 print_wide_int (HOST_WIDE_INT c
)
2036 fprintf (asm_out_file
, HOST_WIDE_INT_PRINT_DEC
, c
);
2047 /* Output the name of type TYPE, with no punctuation.
2048 Such names can be set up either by typedef declarations
2049 or by struct, enum and union tags. */
2052 dbxout_type_name (tree type
)
2054 tree t
= TYPE_NAME (type
);
2057 switch (TREE_CODE (t
))
2059 case IDENTIFIER_NODE
:
2068 fprintf (asm_out_file
, "%s", IDENTIFIER_POINTER (t
));
2069 CHARS (IDENTIFIER_LENGTH (t
));
2072 /* Output leading leading struct or class names needed for qualifying
2073 type whose scope is limited to a struct or class. */
2076 dbxout_class_name_qualifiers (tree decl
)
2078 tree context
= decl_type_context (decl
);
2080 if (context
!= NULL_TREE
2081 && TREE_CODE(context
) == RECORD_TYPE
2082 && TYPE_NAME (context
) != 0
2083 && (TREE_CODE (TYPE_NAME (context
)) == IDENTIFIER_NODE
2084 || (DECL_NAME (TYPE_NAME (context
)) != 0)))
2086 tree name
= TYPE_NAME (context
);
2088 emit_pending_bincls_if_required ();
2090 if (TREE_CODE (name
) == TYPE_DECL
)
2092 dbxout_class_name_qualifiers (name
);
2093 name
= DECL_NAME (name
);
2095 fprintf (asm_out_file
, "%s::", IDENTIFIER_POINTER (name
));
2096 CHARS (IDENTIFIER_LENGTH (name
) + 2);
2100 /* Output a .stabs for the symbol defined by DECL,
2101 which must be a ..._DECL node in the normal namespace.
2102 It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL.
2103 LOCAL is nonzero if the scope is less than the entire file.
2104 Return 1 if a stabs might have been emitted. */
2107 dbxout_symbol (tree decl
, int local ATTRIBUTE_UNUSED
)
2109 tree type
= TREE_TYPE (decl
);
2110 tree context
= NULL_TREE
;
2113 /* "Intercept" dbxout_symbol() calls like we do all debug_hooks. */
2116 /* Ignore nameless syms, but don't ignore type tags. */
2118 if ((DECL_NAME (decl
) == 0 && TREE_CODE (decl
) != TYPE_DECL
)
2119 || DECL_IGNORED_P (decl
))
2120 DBXOUT_DECR_NESTING_AND_RETURN (0);
2122 /* If we are to generate only the symbols actually used then such
2123 symbol nodees are flagged with TREE_USED. Ignore any that
2124 aren't flaged as TREE_USED. */
2126 if (flag_debug_only_used_symbols
2127 && (!TREE_USED (decl
)
2128 && (TREE_CODE (decl
) != VAR_DECL
|| !DECL_INITIAL (decl
))))
2129 DBXOUT_DECR_NESTING_AND_RETURN (0);
2131 /* If dbxout_init has not yet run, queue this symbol for later. */
2134 preinit_symbols
= tree_cons (0, decl
, preinit_symbols
);
2135 DBXOUT_DECR_NESTING_AND_RETURN (0);
2138 if (flag_debug_only_used_symbols
)
2142 /* We now have a used symbol. We need to generate the info for
2143 the symbol's type in addition to the symbol itself. These
2144 type symbols are queued to be generated after were done with
2145 the symbol itself (done because the symbol's info is generated
2146 with fprintf's, etc. as it determines what's needed).
2148 Note, because the TREE_TYPE(type) might be something like a
2149 pointer to a named type we need to look for the first name
2150 we see following the TREE_TYPE chain. */
2153 while (POINTER_TYPE_P (t
))
2156 /* RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, and ENUMERAL_TYPE
2157 need special treatment. The TYPE_STUB_DECL field in these
2158 types generally represents the tag name type we want to
2159 output. In addition there could be a typedef type with
2160 a different name. In that case we also want to output
2163 if (TREE_CODE (t
) == RECORD_TYPE
2164 || TREE_CODE (t
) == UNION_TYPE
2165 || TREE_CODE (t
) == QUAL_UNION_TYPE
2166 || TREE_CODE (t
) == ENUMERAL_TYPE
)
2168 if (TYPE_STUB_DECL (t
)
2169 && TYPE_STUB_DECL (t
) != decl
2170 && DECL_P (TYPE_STUB_DECL (t
))
2171 && ! DECL_IGNORED_P (TYPE_STUB_DECL (t
)))
2173 debug_queue_symbol (TYPE_STUB_DECL (t
));
2175 && TYPE_NAME (t
) != TYPE_STUB_DECL (t
)
2176 && TYPE_NAME (t
) != decl
2177 && DECL_P (TYPE_NAME (t
)))
2178 debug_queue_symbol (TYPE_NAME (t
));
2181 else if (TYPE_NAME (t
)
2182 && TYPE_NAME (t
) != decl
2183 && DECL_P (TYPE_NAME (t
)))
2184 debug_queue_symbol (TYPE_NAME (t
));
2187 emit_pending_bincls_if_required ();
2189 dbxout_prepare_symbol (decl
);
2191 /* The output will always start with the symbol name,
2192 so always count that in the length-output-so-far. */
2194 if (DECL_NAME (decl
) != 0)
2195 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (DECL_NAME (decl
));
2197 switch (TREE_CODE (decl
))
2200 /* Enum values are defined by defining the enum type. */
2204 if (DECL_RTL (decl
) == 0)
2205 DBXOUT_DECR_NESTING_AND_RETURN (0);
2206 if (DECL_EXTERNAL (decl
))
2208 /* Don't mention a nested function under its parent. */
2209 context
= decl_function_context (decl
);
2210 if (context
== current_function_decl
)
2212 if (!MEM_P (DECL_RTL (decl
))
2213 || GET_CODE (XEXP (DECL_RTL (decl
), 0)) != SYMBOL_REF
)
2217 fprintf (asm_out_file
, "%s\"%s:%c", ASM_STABS_OP
,
2218 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)),
2219 TREE_PUBLIC (decl
) ? 'F' : 'f');
2222 current_sym_code
= N_FUN
;
2223 current_sym_addr
= XEXP (DECL_RTL (decl
), 0);
2225 if (TREE_TYPE (type
))
2226 dbxout_type (TREE_TYPE (type
), 0);
2228 dbxout_type (void_type_node
, 0);
2230 /* For a nested function, when that function is compiled,
2231 mention the containing function name
2232 as well as (since dbx wants it) our own assembler-name. */
2234 fprintf (asm_out_file
, ",%s,%s",
2235 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)),
2236 IDENTIFIER_POINTER (DECL_NAME (context
)));
2238 dbxout_finish_symbol (decl
);
2242 /* Don't output the same typedef twice.
2243 And don't output what language-specific stuff doesn't want output. */
2244 if (TREE_ASM_WRITTEN (decl
) || TYPE_DECL_SUPPRESS_DEBUG (decl
))
2245 DBXOUT_DECR_NESTING_AND_RETURN (0);
2247 /* Don't output typedefs for types with magic type numbers (XCOFF). */
2248 #ifdef DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER
2250 int fundamental_type_number
=
2251 DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER (decl
);
2253 if (fundamental_type_number
!= 0)
2255 TREE_ASM_WRITTEN (decl
) = 1;
2256 TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl
)) = fundamental_type_number
;
2257 DBXOUT_DECR_NESTING_AND_RETURN (0);
2267 if (DECL_NAME (decl
))
2269 /* Nonzero means we must output a tag as well as a typedef. */
2272 /* Handle the case of a C++ structure or union
2273 where the TYPE_NAME is a TYPE_DECL
2274 which gives both a typedef name and a tag. */
2275 /* dbx requires the tag first and the typedef second. */
2276 if ((TREE_CODE (type
) == RECORD_TYPE
2277 || TREE_CODE (type
) == UNION_TYPE
2278 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
2279 && TYPE_NAME (type
) == decl
2280 && !(use_gnu_debug_info_extensions
&& have_used_extensions
)
2281 && !TREE_ASM_WRITTEN (TYPE_NAME (type
))
2282 /* Distinguish the implicit typedefs of C++
2283 from explicit ones that might be found in C. */
2284 && DECL_ARTIFICIAL (decl
)
2285 /* Do not generate a tag for incomplete records. */
2286 && COMPLETE_TYPE_P (type
)
2287 /* Do not generate a tag for records of variable size,
2288 since this type can not be properly described in the
2289 DBX format, and it confuses some tools such as objdump. */
2290 && host_integerp (TYPE_SIZE (type
), 1))
2292 tree name
= TYPE_NAME (type
);
2293 if (TREE_CODE (name
) == TYPE_DECL
)
2294 name
= DECL_NAME (name
);
2296 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2297 current_sym_value
= 0;
2298 current_sym_addr
= 0;
2299 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (name
);
2301 fprintf (asm_out_file
, "%s\"%s:T", ASM_STABS_OP
,
2302 IDENTIFIER_POINTER (name
));
2303 dbxout_type (type
, 1);
2304 dbxout_finish_symbol (NULL_TREE
);
2307 /* Output .stabs (or whatever) and leading double quote. */
2308 fprintf (asm_out_file
, "%s\"", ASM_STABS_OP
);
2310 if (use_gnu_debug_info_extensions
)
2312 /* Output leading class/struct qualifiers. */
2313 dbxout_class_name_qualifiers (decl
);
2316 /* Output typedef name. */
2317 fprintf (asm_out_file
, "%s:", IDENTIFIER_POINTER (DECL_NAME (decl
)));
2319 /* Short cut way to output a tag also. */
2320 if ((TREE_CODE (type
) == RECORD_TYPE
2321 || TREE_CODE (type
) == UNION_TYPE
2322 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
2323 && TYPE_NAME (type
) == decl
2324 /* Distinguish the implicit typedefs of C++
2325 from explicit ones that might be found in C. */
2326 && DECL_ARTIFICIAL (decl
))
2328 if (use_gnu_debug_info_extensions
&& have_used_extensions
)
2330 putc ('T', asm_out_file
);
2331 TREE_ASM_WRITTEN (TYPE_NAME (type
)) = 1;
2335 putc ('t', asm_out_file
);
2336 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2338 dbxout_type (type
, 1);
2339 dbxout_finish_symbol (decl
);
2343 /* Don't output a tag if this is an incomplete type. This prevents
2344 the sun4 Sun OS 4.x dbx from crashing. */
2346 if (tag_needed
&& TYPE_NAME (type
) != 0
2347 && (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
2348 || (DECL_NAME (TYPE_NAME (type
)) != 0))
2349 && COMPLETE_TYPE_P (type
)
2350 && !TREE_ASM_WRITTEN (TYPE_NAME (type
)))
2352 /* For a TYPE_DECL with no name, but the type has a name,
2354 This is what represents `struct foo' with no typedef. */
2355 /* In C++, the name of a type is the corresponding typedef.
2356 In C, it is an IDENTIFIER_NODE. */
2357 tree name
= TYPE_NAME (type
);
2358 if (TREE_CODE (name
) == TYPE_DECL
)
2359 name
= DECL_NAME (name
);
2361 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2362 current_sym_value
= 0;
2363 current_sym_addr
= 0;
2364 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (name
);
2366 fprintf (asm_out_file
, "%s\"%s:T", ASM_STABS_OP
,
2367 IDENTIFIER_POINTER (name
));
2368 dbxout_type (type
, 1);
2369 dbxout_finish_symbol (NULL_TREE
);
2373 /* If an enum type has no name, it cannot be referred to,
2374 but we must output it anyway, since the enumeration constants
2375 can be referred to. */
2376 if (!did_output
&& TREE_CODE (type
) == ENUMERAL_TYPE
)
2378 current_sym_code
= DBX_TYPE_DECL_STABS_CODE
;
2379 current_sym_value
= 0;
2380 current_sym_addr
= 0;
2381 current_sym_nchars
= 2;
2383 /* Some debuggers fail when given NULL names, so give this a
2384 harmless name of ` '. */
2385 fprintf (asm_out_file
, "%s\" :T", ASM_STABS_OP
);
2386 dbxout_type (type
, 1);
2387 dbxout_finish_symbol (NULL_TREE
);
2390 /* Prevent duplicate output of a typedef. */
2391 TREE_ASM_WRITTEN (decl
) = 1;
2396 /* Parm decls go in their own separate chains
2397 and are output by dbxout_reg_parms and dbxout_parms. */
2401 /* Named return value, treat like a VAR_DECL. */
2403 if (! DECL_RTL_SET_P (decl
))
2404 DBXOUT_DECR_NESTING_AND_RETURN (0);
2405 /* Don't mention a variable that is external.
2406 Let the file that defines it describe it. */
2407 if (DECL_EXTERNAL (decl
))
2410 /* If the variable is really a constant
2411 and not written in memory, inform the debugger. */
2412 if (TREE_STATIC (decl
) && TREE_READONLY (decl
)
2413 && DECL_INITIAL (decl
) != 0
2414 && host_integerp (DECL_INITIAL (decl
), 0)
2415 && ! TREE_ASM_WRITTEN (decl
)
2416 && (DECL_CONTEXT (decl
) == NULL_TREE
2417 || TREE_CODE (DECL_CONTEXT (decl
)) == BLOCK
))
2419 if (TREE_PUBLIC (decl
) == 0)
2421 /* The sun4 assembler does not grok this. */
2422 const char *name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
2424 if (TREE_CODE (TREE_TYPE (decl
)) == INTEGER_TYPE
2425 || TREE_CODE (TREE_TYPE (decl
)) == ENUMERAL_TYPE
)
2427 HOST_WIDE_INT ival
= tree_low_cst (DECL_INITIAL (decl
), 0);
2428 fprintf (asm_out_file
, "%s\"%s:c=i" HOST_WIDE_INT_PRINT_DEC
2430 ASM_STABS_OP
, name
, ival
, N_LSYM
);
2431 DBXOUT_DECR_NESTING
;
2434 else if (TREE_CODE (TREE_TYPE (decl
)) == REAL_TYPE
)
2436 /* Don't know how to do this yet. */
2440 /* else it is something we handle like a normal variable. */
2443 SET_DECL_RTL (decl
, eliminate_regs (DECL_RTL (decl
), 0, NULL_RTX
));
2444 #ifdef LEAF_REG_REMAP
2445 if (current_function_uses_only_leaf_regs
)
2446 leaf_renumber_regs_insn (DECL_RTL (decl
));
2449 result
= dbxout_symbol_location (decl
, type
, 0, DECL_RTL (decl
));
2455 DBXOUT_DECR_NESTING
;
2459 /* Output the stab for DECL, a VAR_DECL, RESULT_DECL or PARM_DECL.
2460 Add SUFFIX to its name, if SUFFIX is not 0.
2461 Describe the variable as residing in HOME
2462 (usually HOME is DECL_RTL (DECL), but not always).
2463 Returns 1 if the stab was really emitted. */
2466 dbxout_symbol_location (tree decl
, tree type
, const char *suffix
, rtx home
)
2471 emit_pending_bincls_if_required ();
2473 /* Don't mention a variable at all
2474 if it was completely optimized into nothingness.
2476 If the decl was from an inline function, then its rtl
2477 is not identically the rtl that was used in this
2478 particular compilation. */
2479 if (GET_CODE (home
) == SUBREG
)
2483 while (GET_CODE (value
) == SUBREG
)
2484 value
= SUBREG_REG (value
);
2487 if (REGNO (value
) >= FIRST_PSEUDO_REGISTER
)
2490 home
= alter_subreg (&home
);
2494 regno
= REGNO (home
);
2495 if (regno
>= FIRST_PSEUDO_REGISTER
)
2499 /* The kind-of-variable letter depends on where
2500 the variable is and on the scope of its name:
2501 G and N_GSYM for static storage and global scope,
2502 S for static storage and file scope,
2503 V for static storage and local scope,
2504 for those two, use N_LCSYM if data is in bss segment,
2505 N_STSYM if in data segment, N_FUN otherwise.
2506 (We used N_FUN originally, then changed to N_STSYM
2507 to please GDB. However, it seems that confused ld.
2508 Now GDB has been fixed to like N_FUN, says Kingdon.)
2509 no letter at all, and N_LSYM, for auto variable,
2510 r and N_RSYM for register variable. */
2513 && GET_CODE (XEXP (home
, 0)) == SYMBOL_REF
)
2515 if (TREE_PUBLIC (decl
))
2518 current_sym_code
= N_GSYM
;
2522 current_sym_addr
= XEXP (home
, 0);
2524 letter
= decl_function_context (decl
) ? 'V' : 'S';
2526 /* This should be the same condition as in assemble_variable, but
2527 we don't have access to dont_output_data here. So, instead,
2528 we rely on the fact that error_mark_node initializers always
2529 end up in bss for C++ and never end up in bss for C. */
2530 if (DECL_INITIAL (decl
) == 0
2531 || (!strcmp (lang_hooks
.name
, "GNU C++")
2532 && DECL_INITIAL (decl
) == error_mark_node
))
2533 current_sym_code
= N_LCSYM
;
2534 else if (DECL_IN_TEXT_SECTION (decl
))
2535 /* This is not quite right, but it's the closest
2536 of all the codes that Unix defines. */
2537 current_sym_code
= DBX_STATIC_CONST_VAR_CODE
;
2540 /* Some ports can transform a symbol ref into a label ref,
2541 because the symbol ref is too far away and has to be
2542 dumped into a constant pool. Alternatively, the symbol
2543 in the constant pool might be referenced by a different
2545 if (GET_CODE (current_sym_addr
) == SYMBOL_REF
2546 && CONSTANT_POOL_ADDRESS_P (current_sym_addr
))
2549 rtx tmp
= get_pool_constant_mark (current_sym_addr
, &marked
);
2551 if (GET_CODE (tmp
) == SYMBOL_REF
)
2553 current_sym_addr
= tmp
;
2554 if (CONSTANT_POOL_ADDRESS_P (current_sym_addr
))
2555 get_pool_constant_mark (current_sym_addr
, &marked
);
2559 else if (GET_CODE (tmp
) == LABEL_REF
)
2561 current_sym_addr
= tmp
;
2565 /* If all references to the constant pool were optimized
2566 out, we just ignore the symbol. */
2571 /* Ultrix `as' seems to need this. */
2572 #ifdef DBX_STATIC_STAB_DATA_SECTION
2575 current_sym_code
= N_STSYM
;
2579 else if (regno
>= 0)
2582 current_sym_code
= N_RSYM
;
2583 current_sym_value
= DBX_REGISTER_NUMBER (regno
);
2585 else if (MEM_P (home
)
2586 && (MEM_P (XEXP (home
, 0))
2587 || (REG_P (XEXP (home
, 0))
2588 && REGNO (XEXP (home
, 0)) != HARD_FRAME_POINTER_REGNUM
2589 && REGNO (XEXP (home
, 0)) != STACK_POINTER_REGNUM
2590 #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
2591 && REGNO (XEXP (home
, 0)) != ARG_POINTER_REGNUM
2594 /* If the value is indirect by memory or by a register
2595 that isn't the frame pointer
2596 then it means the object is variable-sized and address through
2597 that register or stack slot. DBX has no way to represent this
2598 so all we can do is output the variable as a pointer.
2599 If it's not a parameter, ignore it. */
2601 if (REG_P (XEXP (home
, 0)))
2604 current_sym_code
= N_RSYM
;
2605 if (REGNO (XEXP (home
, 0)) >= FIRST_PSEUDO_REGISTER
)
2607 current_sym_value
= DBX_REGISTER_NUMBER (REGNO (XEXP (home
, 0)));
2611 current_sym_code
= N_LSYM
;
2612 /* RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))).
2613 We want the value of that CONST_INT. */
2615 = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (home
, 0), 0));
2618 /* Effectively do build_pointer_type, but don't cache this type,
2619 since it might be temporary whereas the type it points to
2620 might have been saved for inlining. */
2621 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
2622 type
= make_node (POINTER_TYPE
);
2623 TREE_TYPE (type
) = TREE_TYPE (decl
);
2625 else if (MEM_P (home
)
2626 && REG_P (XEXP (home
, 0)))
2628 current_sym_code
= N_LSYM
;
2629 current_sym_value
= DEBUGGER_AUTO_OFFSET (XEXP (home
, 0));
2631 else if (MEM_P (home
)
2632 && GET_CODE (XEXP (home
, 0)) == PLUS
2633 && GET_CODE (XEXP (XEXP (home
, 0), 1)) == CONST_INT
)
2635 current_sym_code
= N_LSYM
;
2636 /* RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
2637 We want the value of that CONST_INT. */
2638 current_sym_value
= DEBUGGER_AUTO_OFFSET (XEXP (home
, 0));
2640 else if (MEM_P (home
)
2641 && GET_CODE (XEXP (home
, 0)) == CONST
)
2643 /* Handle an obscure case which can arise when optimizing and
2644 when there are few available registers. (This is *always*
2645 the case for i386/i486 targets). The RTL looks like
2646 (MEM (CONST ...)) even though this variable is a local `auto'
2647 or a local `register' variable. In effect, what has happened
2648 is that the reload pass has seen that all assignments and
2649 references for one such a local variable can be replaced by
2650 equivalent assignments and references to some static storage
2651 variable, thereby avoiding the need for a register. In such
2652 cases we're forced to lie to debuggers and tell them that
2653 this variable was itself `static'. */
2654 current_sym_code
= N_LCSYM
;
2656 current_sym_addr
= XEXP (XEXP (home
, 0), 0);
2658 else if (GET_CODE (home
) == CONCAT
)
2662 /* If TYPE is not a COMPLEX_TYPE (it might be a RECORD_TYPE,
2663 for example), then there is no easy way to figure out
2664 what SUBTYPE should be. So, we give up. */
2665 if (TREE_CODE (type
) != COMPLEX_TYPE
)
2668 subtype
= TREE_TYPE (type
);
2670 /* If the variable's storage is in two parts,
2671 output each as a separate stab with a modified name. */
2672 if (WORDS_BIG_ENDIAN
)
2673 dbxout_symbol_location (decl
, subtype
, "$imag", XEXP (home
, 0));
2675 dbxout_symbol_location (decl
, subtype
, "$real", XEXP (home
, 0));
2677 dbxout_prepare_symbol (decl
);
2679 if (WORDS_BIG_ENDIAN
)
2680 dbxout_symbol_location (decl
, subtype
, "$real", XEXP (home
, 1));
2682 dbxout_symbol_location (decl
, subtype
, "$imag", XEXP (home
, 1));
2686 /* Address might be a MEM, when DECL is a variable-sized object.
2687 Or it might be const0_rtx, meaning previous passes
2688 want us to ignore this variable. */
2691 /* Ok, start a symtab entry and output the variable name. */
2694 #ifdef DBX_STATIC_BLOCK_START
2695 DBX_STATIC_BLOCK_START (asm_out_file
, current_sym_code
);
2698 dbxout_symbol_name (decl
, suffix
, letter
);
2699 dbxout_type (type
, 0);
2700 dbxout_finish_symbol (decl
);
2702 #ifdef DBX_STATIC_BLOCK_END
2703 DBX_STATIC_BLOCK_END (asm_out_file
, current_sym_code
);
2708 /* Output the symbol name of DECL for a stabs, with suffix SUFFIX.
2709 Then output LETTER to indicate the kind of location the symbol has. */
2712 dbxout_symbol_name (tree decl
, const char *suffix
, int letter
)
2716 if (DECL_CONTEXT (decl
)
2717 && (TYPE_P (DECL_CONTEXT (decl
))
2718 || TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
))
2719 /* One slight hitch: if this is a VAR_DECL which is a class member
2720 or a namespace member, we must put out the mangled name instead of the
2721 DECL_NAME. Note also that static member (variable) names DO NOT begin
2722 with underscores in .stabs directives. */
2723 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
));
2725 /* ...but if we're function-local, we don't want to include the junk
2726 added by ASM_FORMAT_PRIVATE_NAME. */
2727 name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
2731 fprintf (asm_out_file
, "%s\"%s%s:", ASM_STABS_OP
, name
,
2732 (suffix
? suffix
: ""));
2735 putc (letter
, asm_out_file
);
2739 dbxout_prepare_symbol (tree decl ATTRIBUTE_UNUSED
)
2741 /* Initialize variables used to communicate each symbol's debug
2742 information to dbxout_finish_symbol with zeroes. */
2744 /* Cast avoids warning in old compilers. */
2745 current_sym_code
= (STAB_CODE_TYPE
) 0;
2746 current_sym_value
= 0;
2747 current_sym_addr
= 0;
2751 dbxout_finish_symbol (tree sym
)
2753 #ifdef DBX_FINISH_SYMBOL
2754 DBX_FINISH_SYMBOL (asm_out_file
, sym
);
2757 if (use_gnu_debug_info_extensions
&& sym
!= 0)
2758 line
= DECL_SOURCE_LINE (sym
);
2760 fprintf (asm_out_file
, "\",%d,0,%d,", current_sym_code
, line
);
2761 if (current_sym_addr
)
2762 output_addr_const (asm_out_file
, current_sym_addr
);
2764 fprintf (asm_out_file
, "%d", current_sym_value
);
2765 putc ('\n', asm_out_file
);
2769 /* Output definitions of all the decls in a chain. Return nonzero if
2770 anything was output */
2773 dbxout_syms (tree syms
)
2778 result
+= dbxout_symbol (syms
, 1);
2779 syms
= TREE_CHAIN (syms
);
2784 /* The following two functions output definitions of function parameters.
2785 Each parameter gets a definition locating it in the parameter list.
2786 Each parameter that is a register variable gets a second definition
2787 locating it in the register.
2789 Printing or argument lists in gdb uses the definitions that
2790 locate in the parameter list. But reference to the variable in
2791 expressions uses preferentially the definition as a register. */
2793 /* Output definitions, referring to storage in the parmlist,
2794 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
2797 dbxout_parms (tree parms
)
2801 emit_pending_bincls_if_required ();
2803 for (; parms
; parms
= TREE_CHAIN (parms
))
2804 if (DECL_NAME (parms
)
2805 && TREE_TYPE (parms
) != error_mark_node
2806 && DECL_RTL_SET_P (parms
)
2807 && DECL_INCOMING_RTL (parms
))
2809 dbxout_prepare_symbol (parms
);
2811 /* Perform any necessary register eliminations on the parameter's rtl,
2812 so that the debugging output will be accurate. */
2813 DECL_INCOMING_RTL (parms
)
2814 = eliminate_regs (DECL_INCOMING_RTL (parms
), 0, NULL_RTX
);
2815 SET_DECL_RTL (parms
, eliminate_regs (DECL_RTL (parms
), 0, NULL_RTX
));
2816 #ifdef LEAF_REG_REMAP
2817 if (current_function_uses_only_leaf_regs
)
2819 leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms
));
2820 leaf_renumber_regs_insn (DECL_RTL (parms
));
2824 if (PARM_PASSED_IN_MEMORY (parms
))
2826 rtx addr
= XEXP (DECL_INCOMING_RTL (parms
), 0);
2828 /* ??? Here we assume that the parm address is indexed
2829 off the frame pointer or arg pointer.
2830 If that is not true, we produce meaningless results,
2831 but do not crash. */
2832 if (GET_CODE (addr
) == PLUS
2833 && GET_CODE (XEXP (addr
, 1)) == CONST_INT
)
2834 current_sym_value
= INTVAL (XEXP (addr
, 1));
2836 current_sym_value
= 0;
2838 current_sym_code
= N_PSYM
;
2839 current_sym_addr
= 0;
2842 if (DECL_NAME (parms
))
2844 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (DECL_NAME (parms
));
2845 fprintf (asm_out_file
, "%s\"%s:p", ASM_STABS_OP
,
2846 IDENTIFIER_POINTER (DECL_NAME (parms
)));
2850 current_sym_nchars
= 8;
2851 fprintf (asm_out_file
, "%s\"(anon):p", ASM_STABS_OP
);
2854 /* It is quite tempting to use:
2856 dbxout_type (TREE_TYPE (parms), 0);
2858 as the next statement, rather than using DECL_ARG_TYPE(), so
2859 that gcc reports the actual type of the parameter, rather
2860 than the promoted type. This certainly makes GDB's life
2861 easier, at least for some ports. The change is a bad idea
2862 however, since GDB expects to be able access the type without
2863 performing any conversions. So for example, if we were
2864 passing a float to an unprototyped function, gcc will store a
2865 double on the stack, but if we emit a stab saying the type is a
2866 float, then gdb will only read in a single value, and this will
2867 produce an erroneous value. */
2868 dbxout_type (DECL_ARG_TYPE (parms
), 0);
2869 current_sym_value
= DEBUGGER_ARG_OFFSET (current_sym_value
, addr
);
2870 dbxout_finish_symbol (parms
);
2872 else if (REG_P (DECL_RTL (parms
)))
2875 char regparm_letter
;
2877 /* Parm passed in registers and lives in registers or nowhere. */
2879 current_sym_code
= DBX_REGPARM_STABS_CODE
;
2880 regparm_letter
= DBX_REGPARM_STABS_LETTER
;
2881 current_sym_addr
= 0;
2883 /* If parm lives in a register, use that register;
2884 pretend the parm was passed there. It would be more consistent
2885 to describe the register where the parm was passed,
2886 but in practice that register usually holds something else.
2888 If we use DECL_RTL, then we must use the declared type of
2889 the variable, not the type that it arrived in. */
2890 if (REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
2892 best_rtl
= DECL_RTL (parms
);
2893 parm_type
= TREE_TYPE (parms
);
2895 /* If the parm lives nowhere, use the register where it was
2896 passed. It is also better to use the declared type here. */
2899 best_rtl
= DECL_INCOMING_RTL (parms
);
2900 parm_type
= TREE_TYPE (parms
);
2902 current_sym_value
= DBX_REGISTER_NUMBER (REGNO (best_rtl
));
2905 if (DECL_NAME (parms
))
2907 current_sym_nchars
= 2 + IDENTIFIER_LENGTH (DECL_NAME (parms
));
2908 fprintf (asm_out_file
, "%s\"%s:%c", ASM_STABS_OP
,
2909 IDENTIFIER_POINTER (DECL_NAME (parms
)),
2914 current_sym_nchars
= 8;
2915 fprintf (asm_out_file
, "%s\"(anon):%c", ASM_STABS_OP
,
2919 dbxout_type (parm_type
, 0);
2920 dbxout_finish_symbol (parms
);
2922 else if (MEM_P (DECL_RTL (parms
))
2923 && REG_P (XEXP (DECL_RTL (parms
), 0))
2924 && REGNO (XEXP (DECL_RTL (parms
), 0)) != HARD_FRAME_POINTER_REGNUM
2925 && REGNO (XEXP (DECL_RTL (parms
), 0)) != STACK_POINTER_REGNUM
2926 #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
2927 && REGNO (XEXP (DECL_RTL (parms
), 0)) != ARG_POINTER_REGNUM
2931 /* Parm was passed via invisible reference.
2932 That is, its address was passed in a register.
2933 Output it as if it lived in that register.
2934 The debugger will know from the type
2935 that it was actually passed by invisible reference. */
2937 char regparm_letter
;
2938 /* Parm passed in registers and lives in registers or nowhere. */
2940 current_sym_code
= DBX_REGPARM_STABS_CODE
;
2942 if (use_gnu_debug_info_extensions
)
2943 /* GDB likes this marked with a special letter. */
2944 regparm_letter
= 'a';
2946 regparm_letter
= DBX_REGPARM_STABS_LETTER
;
2948 /* DECL_RTL looks like (MEM (REG...). Get the register number.
2949 If it is an unallocated pseudo-reg, then use the register where
2950 it was passed instead. */
2951 if (REGNO (XEXP (DECL_RTL (parms
), 0)) < FIRST_PSEUDO_REGISTER
)
2952 current_sym_value
= REGNO (XEXP (DECL_RTL (parms
), 0));
2954 current_sym_value
= REGNO (DECL_INCOMING_RTL (parms
));
2956 current_sym_addr
= 0;
2959 if (DECL_NAME (parms
))
2962 = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms
)));
2964 fprintf (asm_out_file
, "%s\"%s:%c", ASM_STABS_OP
,
2965 IDENTIFIER_POINTER (DECL_NAME (parms
)),
2970 current_sym_nchars
= 8;
2971 fprintf (asm_out_file
, "%s\"(anon):%c", ASM_STABS_OP
,
2975 dbxout_type (TREE_TYPE (parms
), 0);
2976 dbxout_finish_symbol (parms
);
2978 else if (MEM_P (DECL_RTL (parms
))
2979 && MEM_P (XEXP (DECL_RTL (parms
), 0)))
2981 /* Parm was passed via invisible reference, with the reference
2982 living on the stack. DECL_RTL looks like
2983 (MEM (MEM (PLUS (REG ...) (CONST_INT ...)))) or it
2984 could look like (MEM (MEM (REG))). */
2985 const char *const decl_name
= (DECL_NAME (parms
)
2986 ? IDENTIFIER_POINTER (DECL_NAME (parms
))
2988 if (REG_P (XEXP (XEXP (DECL_RTL (parms
), 0), 0)))
2989 current_sym_value
= 0;
2992 = INTVAL (XEXP (XEXP (XEXP (DECL_RTL (parms
), 0), 0), 1));
2993 current_sym_addr
= 0;
2994 current_sym_code
= N_PSYM
;
2997 fprintf (asm_out_file
, "%s\"%s:v", ASM_STABS_OP
, decl_name
);
3000 = DEBUGGER_ARG_OFFSET (current_sym_value
,
3001 XEXP (XEXP (DECL_RTL (parms
), 0), 0));
3002 dbxout_type (TREE_TYPE (parms
), 0);
3003 dbxout_finish_symbol (parms
);
3005 else if (MEM_P (DECL_RTL (parms
))
3006 && XEXP (DECL_RTL (parms
), 0) != const0_rtx
3007 /* ??? A constant address for a parm can happen
3008 when the reg it lives in is equiv to a constant in memory.
3009 Should make this not happen, after 2.4. */
3010 && ! CONSTANT_P (XEXP (DECL_RTL (parms
), 0)))
3012 /* Parm was passed in registers but lives on the stack. */
3014 current_sym_code
= N_PSYM
;
3015 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
3016 in which case we want the value of that CONST_INT,
3018 in which case we use a value of zero. */
3019 if (REG_P (XEXP (DECL_RTL (parms
), 0)))
3020 current_sym_value
= 0;
3023 = INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1));
3025 current_sym_addr
= 0;
3027 /* Make a big endian correction if the mode of the type of the
3028 parameter is not the same as the mode of the rtl. */
3029 if (BYTES_BIG_ENDIAN
3030 && TYPE_MODE (TREE_TYPE (parms
)) != GET_MODE (DECL_RTL (parms
))
3031 && GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms
))) < UNITS_PER_WORD
)
3033 current_sym_value
+=
3034 GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
)))
3035 - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parms
)));
3039 if (DECL_NAME (parms
))
3042 = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms
)));
3044 fprintf (asm_out_file
, "%s\"%s:p", ASM_STABS_OP
,
3045 IDENTIFIER_POINTER (DECL_NAME (parms
)));
3049 current_sym_nchars
= 8;
3050 fprintf (asm_out_file
, "%s\"(anon):p", ASM_STABS_OP
);
3054 = DEBUGGER_ARG_OFFSET (current_sym_value
,
3055 XEXP (DECL_RTL (parms
), 0));
3056 dbxout_type (TREE_TYPE (parms
), 0);
3057 dbxout_finish_symbol (parms
);
3060 DBXOUT_DECR_NESTING
;
3063 /* Output definitions for the places where parms live during the function,
3064 when different from where they were passed, when the parms were passed
3067 It is not useful to do this for parms passed in registers
3068 that live during the function in different registers, because it is
3069 impossible to look in the passed register for the passed value,
3070 so we use the within-the-function register to begin with.
3072 PARMS is a chain of PARM_DECL nodes. */
3075 dbxout_reg_parms (tree parms
)
3079 for (; parms
; parms
= TREE_CHAIN (parms
))
3080 if (DECL_NAME (parms
) && PARM_PASSED_IN_MEMORY (parms
))
3082 dbxout_prepare_symbol (parms
);
3084 /* Report parms that live in registers during the function
3085 but were passed in memory. */
3086 if (REG_P (DECL_RTL (parms
))
3087 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
3088 dbxout_symbol_location (parms
, TREE_TYPE (parms
),
3089 0, DECL_RTL (parms
));
3090 else if (GET_CODE (DECL_RTL (parms
)) == CONCAT
)
3091 dbxout_symbol_location (parms
, TREE_TYPE (parms
),
3092 0, DECL_RTL (parms
));
3093 /* Report parms that live in memory but not where they were passed. */
3094 else if (MEM_P (DECL_RTL (parms
))
3095 && ! rtx_equal_p (DECL_RTL (parms
), DECL_INCOMING_RTL (parms
)))
3096 dbxout_symbol_location (parms
, TREE_TYPE (parms
),
3097 0, DECL_RTL (parms
));
3099 DBXOUT_DECR_NESTING
;
3102 /* Given a chain of ..._TYPE nodes (as come in a parameter list),
3103 output definitions of those names, in raw form */
3106 dbxout_args (tree args
)
3110 putc (',', asm_out_file
);
3111 dbxout_type (TREE_VALUE (args
), 0);
3113 args
= TREE_CHAIN (args
);
3117 /* Subroutine of dbxout_block. Emit an N_LBRAC stab referencing LABEL.
3118 BEGIN_LABEL is the name of the beginning of the function, which may
3121 dbx_output_lbrac (const char *label
,
3122 const char *begin_label ATTRIBUTE_UNUSED
)
3124 #ifdef DBX_OUTPUT_LBRAC
3125 DBX_OUTPUT_LBRAC (asm_out_file
, label
);
3127 fprintf (asm_out_file
, "%s%d,0,0,", ASM_STABN_OP
, N_LBRAC
);
3128 assemble_name (asm_out_file
, label
);
3129 if (DBX_BLOCKS_FUNCTION_RELATIVE
)
3131 putc ('-', asm_out_file
);
3132 assemble_name (asm_out_file
, begin_label
);
3134 fprintf (asm_out_file
, "\n");
3138 /* Subroutine of dbxout_block. Emit an N_RBRAC stab referencing LABEL.
3139 BEGIN_LABEL is the name of the beginning of the function, which may
3142 dbx_output_rbrac (const char *label
,
3143 const char *begin_label ATTRIBUTE_UNUSED
)
3145 #ifdef DBX_OUTPUT_RBRAC
3146 DBX_OUTPUT_RBRAC (asm_out_file
, label
);
3148 fprintf (asm_out_file
, "%s%d,0,0,", ASM_STABN_OP
, N_RBRAC
);
3149 assemble_name (asm_out_file
, label
);
3150 if (DBX_BLOCKS_FUNCTION_RELATIVE
)
3152 putc ('-', asm_out_file
);
3153 assemble_name (asm_out_file
, begin_label
);
3155 fprintf (asm_out_file
, "\n");
3159 /* Output everything about a symbol block (a BLOCK node
3160 that represents a scope level),
3161 including recursive output of contained blocks.
3163 BLOCK is the BLOCK node.
3164 DEPTH is its depth within containing symbol blocks.
3165 ARGS is usually zero; but for the outermost block of the
3166 body of a function, it is a chain of PARM_DECLs for the function parameters.
3167 We output definitions of all the register parms
3168 as if they were local variables of that block.
3170 If -g1 was used, we count blocks just the same, but output nothing
3171 except for the outermost block.
3173 Actually, BLOCK may be several blocks chained together.
3174 We handle them all in sequence. */
3177 dbxout_block (tree block
, int depth
, tree args
)
3179 const char *begin_label
;
3180 begin_label
= XSTR (XEXP (DECL_RTL (current_function_decl
), 0), 0);
3184 /* Ignore blocks never expanded or otherwise marked as real. */
3185 if (TREE_USED (block
) && TREE_ASM_WRITTEN (block
))
3188 int blocknum
= BLOCK_NUMBER (block
);
3190 /* In dbx format, the syms of a block come before the N_LBRAC.
3191 If nothing is output, we don't need the N_LBRAC, either. */
3193 if (debug_info_level
!= DINFO_LEVEL_TERSE
|| depth
== 0)
3194 did_output
= dbxout_syms (BLOCK_VARS (block
));
3196 dbxout_reg_parms (args
);
3198 /* Now output an N_LBRAC symbol to represent the beginning of
3199 the block. Use the block's tree-walk order to generate
3200 the assembler symbols LBBn and LBEn
3201 that final will define around the code in this block. */
3205 const char *scope_start
;
3208 /* The outermost block doesn't get LBB labels; use
3209 the function symbol. */
3210 scope_start
= begin_label
;
3213 ASM_GENERATE_INTERNAL_LABEL (buf
, "LBB", blocknum
);
3217 if (BLOCK_HANDLER_BLOCK (block
))
3219 /* A catch block. Must precede N_LBRAC. */
3220 tree decl
= BLOCK_VARS (block
);
3223 fprintf (asm_out_file
, "%s\"%s:C1\",%d,0,0,", ASM_STABS_OP
,
3224 IDENTIFIER_POINTER (DECL_NAME (decl
)), N_CATCH
);
3225 assemble_name (asm_out_file
, scope_start
);
3226 fprintf (asm_out_file
, "\n");
3227 decl
= TREE_CHAIN (decl
);
3230 dbx_output_lbrac (scope_start
, begin_label
);
3233 /* Output the subblocks. */
3234 dbxout_block (BLOCK_SUBBLOCKS (block
), depth
+ 1, NULL_TREE
);
3236 /* Refer to the marker for the end of the block. */
3241 /* The outermost block doesn't get LBE labels;
3242 use the "scope" label which will be emitted
3243 by dbxout_function_end. */
3244 ASM_GENERATE_INTERNAL_LABEL (buf
, "Lscope", scope_labelno
);
3246 ASM_GENERATE_INTERNAL_LABEL (buf
, "LBE", blocknum
);
3248 dbx_output_rbrac (buf
, begin_label
);
3251 block
= BLOCK_CHAIN (block
);
3255 /* Output the information about a function and its arguments and result.
3256 Usually this follows the function's code,
3257 but on some systems, it comes before. */
3259 #if defined (DBX_DEBUGGING_INFO)
3261 dbxout_begin_function (tree decl
)
3263 int saved_tree_used1
= TREE_USED (decl
);
3264 TREE_USED (decl
) = 1;
3265 if (DECL_NAME (DECL_RESULT (decl
)) != 0)
3267 int saved_tree_used2
= TREE_USED (DECL_RESULT (decl
));
3268 TREE_USED (DECL_RESULT (decl
)) = 1;
3269 dbxout_symbol (decl
, 0);
3270 TREE_USED (DECL_RESULT (decl
)) = saved_tree_used2
;
3273 dbxout_symbol (decl
, 0);
3274 TREE_USED (decl
) = saved_tree_used1
;
3276 dbxout_parms (DECL_ARGUMENTS (decl
));
3277 if (DECL_NAME (DECL_RESULT (decl
)) != 0)
3278 dbxout_symbol (DECL_RESULT (decl
), 1);
3280 #endif /* DBX_DEBUGGING_INFO */
3282 #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */
3284 #include "gt-dbxout.h"