1 /* Output sdb-format symbol table information from GNU compiler.
2 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
3 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* mike@tredysvr.Tredydev.Unisys.COM says:
23 I modified the struct.c example and have a nm of a .o resulting from the
24 AT&T C compiler. From the example below I would conclude the following:
26 1. All .defs from structures are emitted as scanned. The example below
27 clearly shows the symbol table entries for BoxRec2 are after the first
30 2. All functions and their locals (including statics) are emitted as scanned.
32 3. All nested unnamed union and structure .defs must be emitted before
33 the structure in which they are nested. The AT&T assembler is a
34 one pass beast as far as symbolics are concerned.
36 4. All structure .defs are emitted before the typedefs that refer to them.
38 5. All top level static and external variable definitions are moved to the
39 end of file with all top level statics occurring first before externs.
41 6. All undefined references are at the end of the file.
46 #ifdef SDB_DEBUGGING_INFO
54 #include "insn-config.h"
60 /* Mips systems use the SDB functions to dump out symbols, but do not
61 supply usable syms.h include files. Which syms.h file to use is a
62 target parameter so don't use the native one if we're cross compiling. */
64 #if defined(USG) && !defined(MIPS) && !defined (hpux) && !defined(_WIN32) && !defined(__linux__) && !defined(__INTERIX) && !defined(CROSS_COMPILE)
66 /* Use T_INT if we don't have T_VOID. */
74 /* #include <storclass.h> used to be this instead of syms.h. */
76 /* 1 if PARM is passed to this function in memory. */
78 #define PARM_PASSED_IN_MEMORY(PARM) \
79 (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
81 /* A C expression for the integer offset value of an automatic variable
82 (C_AUTO) having address X (an RTX). */
83 #ifndef DEBUGGER_AUTO_OFFSET
84 #define DEBUGGER_AUTO_OFFSET(X) \
85 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
88 /* A C expression for the integer offset value of an argument (C_ARG)
89 having address X (an RTX). The nominal offset is OFFSET. */
90 #ifndef DEBUGGER_ARG_OFFSET
91 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
94 /* Line number of beginning of current function, minus one.
95 Negative means not in a function or not using sdb. */
97 int sdb_begin_function_line
= -1;
99 /* Counter to generate unique "names" for nameless struct members. */
101 static int unnamed_struct_number
= 0;
103 extern FILE *asm_out_file
;
105 extern tree current_function_decl
;
109 static char *gen_fake_label
PARAMS ((void));
110 static int plain_type
PARAMS ((tree
));
111 static int template_name_p
PARAMS ((tree
));
112 static void sdbout_record_type_name
PARAMS ((tree
));
113 static int plain_type_1
PARAMS ((tree
, int));
114 static void sdbout_block
PARAMS ((tree
));
115 static void sdbout_syms
PARAMS ((tree
));
116 #ifdef SDB_ALLOW_FORWARD_REFERENCES
117 static void sdbout_queue_anonymous_type
PARAMS ((tree
));
118 static void sdbout_dequeue_anonymous_types
PARAMS ((void));
120 static void sdbout_type
PARAMS ((tree
));
121 static void sdbout_field_types
PARAMS ((tree
));
122 static void sdbout_one_type
PARAMS ((tree
));
123 static void sdbout_parms
PARAMS ((tree
));
124 static void sdbout_reg_parms
PARAMS ((tree
));
126 /* Random macros describing parts of SDB data. */
128 /* Put something here if lines get too long */
131 /* Default value of delimiter is ";". */
133 #define SDB_DELIM ";"
136 /* Maximum number of dimensions the assembler will allow. */
138 #define SDB_MAX_DIM 4
142 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
145 #ifndef PUT_SDB_INT_VAL
146 #define PUT_SDB_INT_VAL(a) \
148 fputs ("\t.val\t", asm_out_file); \
149 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
150 fprintf (asm_out_file, "%s", SDB_DELIM); \
156 #define PUT_SDB_VAL(a) \
157 ( fputs ("\t.val\t", asm_out_file), \
158 output_addr_const (asm_out_file, (a)), \
159 fprintf (asm_out_file, SDB_DELIM))
163 #define PUT_SDB_DEF(a) \
168 do { fprintf (asm_out_file
, "\t.def\t"); \
169 assemble_name (asm_out_file
, a
); \
170 fprintf (asm_out_file
, SDB_DELIM
); } while (0)
174 #ifndef PUT_SDB_PLAIN_DEF
175 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
178 #ifndef PUT_SDB_ENDEF
179 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
183 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
187 #define PUT_SDB_SIZE(a) \
189 fputs ("\t.size\t", asm_out_file); \
190 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
191 fprintf (asm_out_file, "%s", SDB_DELIM); \
195 #ifndef PUT_SDB_START_DIM
196 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
199 #ifndef PUT_SDB_NEXT_DIM
200 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
203 #ifndef PUT_SDB_LAST_DIM
204 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
208 #define PUT_SDB_TAG(a) \
209 do { fprintf (asm_out_file, "\t.tag\t"); \
210 assemble_name (asm_out_file, a); \
211 fprintf (asm_out_file, SDB_DELIM); } while (0)
214 #ifndef PUT_SDB_BLOCK_START
215 #define PUT_SDB_BLOCK_START(LINE) \
216 fprintf (asm_out_file, \
217 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
218 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
221 #ifndef PUT_SDB_BLOCK_END
222 #define PUT_SDB_BLOCK_END(LINE) \
223 fprintf (asm_out_file, \
224 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
225 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
228 #ifndef PUT_SDB_FUNCTION_START
229 #define PUT_SDB_FUNCTION_START(LINE) \
230 fprintf (asm_out_file, \
231 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
232 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
235 #ifndef PUT_SDB_FUNCTION_END
236 #define PUT_SDB_FUNCTION_END(LINE) \
237 fprintf (asm_out_file, \
238 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
239 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
242 #ifndef PUT_SDB_EPILOGUE_END
243 #define PUT_SDB_EPILOGUE_END(NAME) \
244 do { fprintf (asm_out_file, "\t.def\t"); \
245 assemble_name (asm_out_file, NAME); \
246 fprintf (asm_out_file, \
247 "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", \
248 SDB_DELIM, SDB_DELIM, SDB_DELIM); } while (0)
251 #ifndef SDB_GENERATE_FAKE
252 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
253 sprintf ((BUFFER), ".%dfake", (NUMBER));
256 /* Return the sdb tag identifier string for TYPE
257 if TYPE has already been defined; otherwise return a null pointer. */
259 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
261 /* Set the sdb tag identifier string for TYPE to NAME. */
263 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
264 TYPE_SYMTAB_POINTER (TYPE) = (NAME)
266 /* Return the name (a string) of the struct, union or enum tag
267 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
269 #define TAG_NAME(link) \
270 (((link) && TREE_PURPOSE ((link)) \
271 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
272 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
274 /* Ensure we don't output a negative line number. */
275 #define MAKE_LINE_SAFE(line) \
276 if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1
278 /* Perform linker optimization of merging header file definitions together
279 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a
280 post 960826 version of GAS. Nothing breaks with earlier versions of GAS,
281 the optimization just won't be done. The native assembler already has the
282 necessary support. */
284 #ifdef MIPS_DEBUGGING_INFO
286 #ifndef PUT_SDB_SRC_FILE
287 #define PUT_SDB_SRC_FILE(FILENAME) \
288 output_file_directive (asm_out_file, (FILENAME))
291 /* ECOFF linkers have an optimization that does the same kind of thing as
292 N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the
293 executable. To achieve this, GCC must output a .file for each file
296 /* This is a stack of input files. */
300 struct sdb_file
*next
;
304 /* This is the top of the stack. */
306 static struct sdb_file
*current_file
;
308 #endif /* MIPS_DEBUGGING_INFO */
310 /* Set up for SDB output at the start of compilation. */
313 sdbout_init (asm_file
, input_file_name
, syms
)
314 FILE *asm_file ATTRIBUTE_UNUSED
;
315 const char *input_file_name ATTRIBUTE_UNUSED
;
316 tree syms ATTRIBUTE_UNUSED
;
318 #ifdef MIPS_DEBUGGING_INFO
319 current_file
= (struct sdb_file
*) xmalloc (sizeof *current_file
);
320 current_file
->next
= NULL
;
321 current_file
->name
= input_file_name
;
324 #ifdef RMS_QUICK_HACK_1
326 for (t
= syms
; t
; t
= TREE_CHAIN (t
))
327 if (DECL_NAME (t
) && IDENTIFIER_POINTER (DECL_NAME (t
)) != 0
328 && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t
)), "__vtbl_ptr_type"))
329 sdbout_symbol (t
, 0);
335 /* return the tag identifier for type
339 tag_of_ru_type (type
,link
)
342 if (TYPE_SYMTAB_ADDRESS (type
))
343 return TYPE_SYMTAB_ADDRESS (type
);
344 if (link
&& TREE_PURPOSE (link
)
345 && IDENTIFIER_POINTER (TREE_PURPOSE (link
)))
346 TYPE_SYMTAB_ADDRESS (type
) = IDENTIFIER_POINTER (TREE_PURPOSE (link
));
348 return (char *) TYPE_SYMTAB_ADDRESS (type
);
352 /* Return a unique string to name an anonymous type. */
359 SDB_GENERATE_FAKE (label
, unnamed_struct_number
);
360 unnamed_struct_number
++;
361 labelstr
= (char *) permalloc (strlen (label
) + 1);
362 strcpy (labelstr
, label
);
366 /* Return the number which describes TYPE for SDB.
367 For pointers, etc., this function is recursive.
368 Each record, union or enumeral type must already have had a
369 tag number output. */
371 /* The number is given by d6d5d4d3d2d1bbbb
372 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
373 Thus, char *foo () has bbbb=T_CHAR
376 N_BTMASK= 017 1111 basic type field.
377 N_TSHIFT= 2 derived type shift
378 N_BTSHFT= 4 Basic type shift */
380 /* Produce the number that describes a pointer, function or array type.
381 PREV is the number describing the target, value or element type.
382 DT_type describes how to transform that type. */
383 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
384 ((((PREV) & ~(int)N_BTMASK) << (int)N_TSHIFT) \
385 | ((int)DT_type << (int)N_BTSHFT) \
386 | ((PREV) & (int)N_BTMASK))
388 /* Number of elements used in sdb_dims. */
389 static int sdb_n_dims
= 0;
391 /* Table of array dimensions of current type. */
392 static int sdb_dims
[SDB_MAX_DIM
];
394 /* Size of outermost array currently being processed. */
395 static int sdb_type_size
= -1;
401 int val
= plain_type_1 (type
, 0);
403 /* If we have already saved up some array dimensions, print them now. */
408 for (i
= sdb_n_dims
- 1; i
> 0; i
--)
409 PUT_SDB_NEXT_DIM (sdb_dims
[i
]);
410 PUT_SDB_LAST_DIM (sdb_dims
[0]);
413 sdb_type_size
= int_size_in_bytes (type
);
414 /* Don't kill sdb if type is not laid out or has variable size. */
415 if (sdb_type_size
< 0)
418 /* If we have computed the size of an array containing this type,
420 if (sdb_type_size
>= 0)
422 PUT_SDB_SIZE (sdb_type_size
);
429 template_name_p (name
)
432 register const char *ptr
= IDENTIFIER_POINTER (name
);
433 while (*ptr
&& *ptr
!= '<')
440 sdbout_record_type_name (type
)
443 const char *name
= 0;
446 if (KNOWN_TYPE_TAG (type
))
449 if (TYPE_NAME (type
) != 0)
452 /* Find the IDENTIFIER_NODE for the type name. */
453 if (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
)
454 t
= TYPE_NAME (type
);
455 else if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
457 t
= DECL_NAME (TYPE_NAME (type
));
458 /* The DECL_NAME for templates includes "<>", which breaks
459 most assemblers. Use its assembler name instead, which
460 has been mangled into being safe. */
461 if (t
&& template_name_p (t
))
462 t
= DECL_ASSEMBLER_NAME (TYPE_NAME (type
));
465 /* Now get the name as a string, or invent one. */
467 name
= IDENTIFIER_POINTER (t
);
470 no_name
= (name
== 0 || *name
== 0);
472 name
= gen_fake_label ();
474 SET_KNOWN_TYPE_TAG (type
, name
);
475 #ifdef SDB_ALLOW_FORWARD_REFERENCES
477 sdbout_queue_anonymous_type (type
);
481 /* Return the .type value for type TYPE.
483 LEVEL indicates how many levels deep we have recursed into the type.
484 The SDB debug format can only represent 6 derived levels of types.
485 After that, we must output inaccurate debug info. We deliberately
486 stop before the 7th level, so that ADA recursive types will not give an
490 plain_type_1 (type
, level
)
495 type
= void_type_node
;
496 else if (type
== error_mark_node
)
497 type
= integer_type_node
;
499 type
= TYPE_MAIN_VARIANT (type
);
501 switch (TREE_CODE (type
))
508 int size
= int_size_in_bytes (type
) * BITS_PER_UNIT
;
510 /* Carefully distinguish all the standard types of C,
511 without messing up if the language is not C.
512 Note that we check only for the names that contain spaces;
513 other names might occur by coincidence in other languages. */
514 if (TYPE_NAME (type
) != 0
515 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
516 && DECL_NAME (TYPE_NAME (type
)) != 0
517 && TREE_CODE (DECL_NAME (TYPE_NAME (type
))) == IDENTIFIER_NODE
)
520 = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type
)));
522 if (!strcmp (name
, "char"))
524 if (!strcmp (name
, "unsigned char"))
526 if (!strcmp (name
, "signed char"))
528 if (!strcmp (name
, "int"))
530 if (!strcmp (name
, "unsigned int"))
532 if (!strcmp (name
, "short int"))
534 if (!strcmp (name
, "short unsigned int"))
536 if (!strcmp (name
, "long int"))
538 if (!strcmp (name
, "long unsigned int"))
542 if (size
== INT_TYPE_SIZE
)
543 return (TREE_UNSIGNED (type
) ? T_UINT
: T_INT
);
544 if (size
== CHAR_TYPE_SIZE
)
545 return (TREE_UNSIGNED (type
) ? T_UCHAR
: T_CHAR
);
546 if (size
== SHORT_TYPE_SIZE
)
547 return (TREE_UNSIGNED (type
) ? T_USHORT
: T_SHORT
);
548 if (size
== LONG_TYPE_SIZE
)
549 return (TREE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
550 if (size
== LONG_LONG_TYPE_SIZE
) /* better than nothing */
551 return (TREE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
557 int precision
= TYPE_PRECISION (type
);
558 if (precision
== FLOAT_TYPE_SIZE
)
560 if (precision
== DOUBLE_TYPE_SIZE
)
562 #ifdef EXTENDED_SDB_BASIC_TYPES
563 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
566 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
567 return T_DOUBLE
; /* better than nothing */
578 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
579 if (sdb_n_dims
< SDB_MAX_DIM
)
580 sdb_dims
[sdb_n_dims
++]
581 = (TYPE_DOMAIN (type
)
582 && TYPE_MIN_VALUE (TYPE_DOMAIN (type
)) != 0
583 && TYPE_MAX_VALUE (TYPE_DOMAIN (type
)) != 0
584 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)), 0)
585 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type
)), 0)
586 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)), 0)
587 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type
)), 0) + 1)
590 return PUSH_DERIVED_LEVEL (DT_ARY
, m
);
595 case QUAL_UNION_TYPE
:
599 #ifdef SDB_ALLOW_FORWARD_REFERENCES
600 sdbout_record_type_name (type
);
602 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
603 if ((TREE_ASM_WRITTEN (type
) && KNOWN_TYPE_TAG (type
) != 0)
604 #ifdef SDB_ALLOW_FORWARD_REFERENCES
605 || TYPE_MODE (type
) != VOIDmode
610 /* Output the referenced structure tag name
611 only if the .def has already been finished.
612 At least on 386, the Unix assembler
613 cannot handle forward references to tags. */
614 /* But the 88100, it requires them, sigh... */
615 /* And the MIPS requires unknown refs as well... */
616 tag
= KNOWN_TYPE_TAG (type
);
618 /* These 3 lines used to follow the close brace.
619 However, a size of 0 without a tag implies a tag of 0,
620 so if we don't know a tag, we can't mention the size. */
621 sdb_type_size
= int_size_in_bytes (type
);
622 if (sdb_type_size
< 0)
625 return ((TREE_CODE (type
) == RECORD_TYPE
) ? T_STRUCT
626 : (TREE_CODE (type
) == UNION_TYPE
) ? T_UNION
627 : (TREE_CODE (type
) == QUAL_UNION_TYPE
) ? T_UNION
637 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
638 return PUSH_DERIVED_LEVEL (DT_PTR
, m
);
647 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
648 return PUSH_DERIVED_LEVEL (DT_FCN
, m
);
655 /* Output the symbols defined in block number DO_BLOCK.
657 This function works by walking the tree structure of blocks,
658 counting blocks until it finds the desired block. */
660 static int do_block
= 0;
668 /* Ignore blocks never expanded or otherwise marked as real. */
669 if (TREE_USED (block
))
671 /* When we reach the specified block, output its symbols. */
672 if (BLOCK_NUMBER (block
) == do_block
)
673 sdbout_syms (BLOCK_VARS (block
));
675 /* If we are past the specified block, stop the scan. */
676 if (BLOCK_NUMBER (block
) > do_block
)
679 /* Scan the blocks within this block. */
680 sdbout_block (BLOCK_SUBBLOCKS (block
));
683 block
= BLOCK_CHAIN (block
);
687 /* Call sdbout_symbol on each decl in the chain SYMS. */
695 if (TREE_CODE (syms
) != LABEL_DECL
)
696 sdbout_symbol (syms
, 1);
697 syms
= TREE_CHAIN (syms
);
701 /* Output SDB information for a symbol described by DECL.
702 LOCAL is nonzero if the symbol is not file-scope. */
705 sdbout_symbol (decl
, local
)
709 tree type
= TREE_TYPE (decl
);
710 tree context
= NULL_TREE
;
715 sdbout_one_type (type
);
717 #if 0 /* This loses when functions are marked to be ignored,
718 which happens in the C++ front end. */
719 if (DECL_IGNORED_P (decl
))
723 switch (TREE_CODE (decl
))
726 /* Enum values are defined by defining the enum type. */
730 /* Don't mention a nested function under its parent. */
731 context
= decl_function_context (decl
);
732 if (context
== current_function_decl
)
734 /* Check DECL_INITIAL to distinguish declarations from definitions.
735 Don't output debug info here for declarations; they will have
736 a DECL_INITIAL value of 0. */
737 if (! DECL_INITIAL (decl
))
739 if (GET_CODE (DECL_RTL (decl
)) != MEM
740 || GET_CODE (XEXP (DECL_RTL (decl
), 0)) != SYMBOL_REF
)
742 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
743 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
744 PUT_SDB_SCL (TREE_PUBLIC (decl
) ? C_EXT
: C_STAT
);
748 /* Done with tagged types. */
749 if (DECL_NAME (decl
) == 0)
751 if (DECL_IGNORED_P (decl
))
754 /* Output typedef name. */
755 if (template_name_p (DECL_NAME (decl
)))
756 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
758 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl
)));
759 PUT_SDB_SCL (C_TPDEF
);
763 /* Parm decls go in their own separate chains
764 and are output by sdbout_reg_parms and sdbout_parms. */
768 /* Don't mention a variable that is external.
769 Let the file that defines it describe it. */
770 if (DECL_EXTERNAL (decl
))
773 /* Ignore __FUNCTION__, etc. */
774 if (DECL_IGNORED_P (decl
))
777 /* If there was an error in the declaration, don't dump core
778 if there is no RTL associated with the variable doesn't
780 if (DECL_RTL (decl
) == 0)
783 DECL_RTL (decl
) = eliminate_regs (DECL_RTL (decl
), 0, NULL_RTX
);
784 #ifdef LEAF_REG_REMAP
785 if (current_function_uses_only_leaf_regs
)
786 leaf_renumber_regs_insn (DECL_RTL (decl
));
788 value
= DECL_RTL (decl
);
790 /* Don't mention a variable at all
791 if it was completely optimized into nothingness.
793 If DECL was from an inline function, then its rtl
794 is not identically the rtl that was used in this
795 particular compilation. */
796 if (GET_CODE (value
) == REG
)
798 regno
= REGNO (DECL_RTL (decl
));
799 if (regno
>= FIRST_PSEUDO_REGISTER
)
802 else if (GET_CODE (value
) == SUBREG
)
805 while (GET_CODE (value
) == SUBREG
)
807 offset
+= SUBREG_WORD (value
);
808 value
= SUBREG_REG (value
);
810 if (GET_CODE (value
) == REG
)
812 regno
= REGNO (value
);
813 if (regno
>= FIRST_PSEUDO_REGISTER
)
817 alter_subreg (DECL_RTL (decl
));
818 value
= DECL_RTL (decl
);
820 /* Don't output anything if an auto variable
821 gets RTL that is static.
822 GAS version 2.2 can't handle such output. */
823 else if (GET_CODE (value
) == MEM
&& CONSTANT_P (XEXP (value
, 0))
824 && ! TREE_STATIC (decl
))
827 /* Emit any structure, union, or enum type that has not been output.
828 This occurs for tag-less structs (et al) used to declare variables
830 if (TREE_CODE (type
) == ENUMERAL_TYPE
831 || TREE_CODE (type
) == RECORD_TYPE
832 || TREE_CODE (type
) == UNION_TYPE
833 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
835 if (COMPLETE_TYPE_P (type
) /* not a forward reference */
836 && KNOWN_TYPE_TAG (type
) == 0) /* not yet declared */
837 sdbout_one_type (type
);
840 /* Defer SDB information for top-level initialized variables! */
842 && GET_CODE (value
) == MEM
843 && DECL_INITIAL (decl
))
846 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
847 For now, avoid crashing. */
848 if (DECL_NAME (decl
) == NULL_TREE
)
851 /* Record the name for, starting a symtab entry. */
852 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
));
854 if (GET_CODE (value
) == MEM
855 && GET_CODE (XEXP (value
, 0)) == SYMBOL_REF
)
858 if (TREE_PUBLIC (decl
))
860 PUT_SDB_VAL (XEXP (value
, 0));
865 PUT_SDB_VAL (XEXP (value
, 0));
866 PUT_SDB_SCL (C_STAT
);
872 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno
));
875 else if (GET_CODE (value
) == MEM
876 && (GET_CODE (XEXP (value
, 0)) == MEM
877 || (GET_CODE (XEXP (value
, 0)) == REG
878 && REGNO (XEXP (value
, 0)) != HARD_FRAME_POINTER_REGNUM
879 && REGNO (XEXP (value
, 0)) != STACK_POINTER_REGNUM
)))
880 /* If the value is indirect by memory or by a register
881 that isn't the frame pointer
882 then it means the object is variable-sized and address through
883 that register or stack slot. COFF has no way to represent this
884 so all we can do is output the variable as a pointer. */
887 if (GET_CODE (XEXP (value
, 0)) == REG
)
889 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value
, 0))));
894 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
896 We want the value of that CONST_INT. */
897 /* Encore compiler hates a newline in a macro arg, it seems. */
898 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
899 (XEXP (XEXP (value
, 0), 0)));
900 PUT_SDB_SCL (C_AUTO
);
903 /* Effectively do build_pointer_type, but don't cache this type,
904 since it might be temporary whereas the type it points to
905 might have been saved for inlining. */
906 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
907 type
= make_node (POINTER_TYPE
);
908 TREE_TYPE (type
) = TREE_TYPE (decl
);
910 else if (GET_CODE (value
) == MEM
911 && ((GET_CODE (XEXP (value
, 0)) == PLUS
912 && GET_CODE (XEXP (XEXP (value
, 0), 0)) == REG
913 && GET_CODE (XEXP (XEXP (value
, 0), 1)) == CONST_INT
)
914 /* This is for variables which are at offset zero from
915 the frame pointer. This happens on the Alpha.
916 Non-frame pointer registers are excluded above. */
917 || (GET_CODE (XEXP (value
, 0)) == REG
)))
919 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
920 or (MEM (REG...)). We want the value of that CONST_INT
923 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value
, 0)));
924 PUT_SDB_SCL (C_AUTO
);
926 else if (GET_CODE (value
) == MEM
&& GET_CODE (XEXP (value
, 0)) == CONST
)
928 /* Handle an obscure case which can arise when optimizing and
929 when there are few available registers. (This is *always*
930 the case for i386/i486 targets). The DECL_RTL looks like
931 (MEM (CONST ...)) even though this variable is a local `auto'
932 or a local `register' variable. In effect, what has happened
933 is that the reload pass has seen that all assignments and
934 references for one such a local variable can be replaced by
935 equivalent assignments and references to some static storage
936 variable, thereby avoiding the need for a register. In such
937 cases we're forced to lie to debuggers and tell them that
938 this variable was itself `static'. */
940 PUT_SDB_VAL (XEXP (XEXP (value
, 0), 0));
941 PUT_SDB_SCL (C_STAT
);
945 /* It is something we don't know how to represent for SDB. */
953 PUT_SDB_TYPE (plain_type (type
));
957 /* Output SDB information for a top-level initialized variable
958 that has been delayed. */
961 sdbout_toplevel_data (decl
)
964 tree type
= TREE_TYPE (decl
);
966 if (DECL_IGNORED_P (decl
))
969 if (! (TREE_CODE (decl
) == VAR_DECL
970 && GET_CODE (DECL_RTL (decl
)) == MEM
971 && DECL_INITIAL (decl
)))
974 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
975 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
976 if (TREE_PUBLIC (decl
))
982 PUT_SDB_SCL (C_STAT
);
984 PUT_SDB_TYPE (plain_type (type
));
988 #ifdef SDB_ALLOW_FORWARD_REFERENCES
990 /* Machinery to record and output anonymous types. */
992 static tree anonymous_types
;
995 sdbout_queue_anonymous_type (type
)
998 anonymous_types
= tree_cons (NULL_TREE
, type
, anonymous_types
);
1002 sdbout_dequeue_anonymous_types ()
1004 register tree types
, link
;
1006 while (anonymous_types
)
1008 types
= nreverse (anonymous_types
);
1009 anonymous_types
= NULL_TREE
;
1011 for (link
= types
; link
; link
= TREE_CHAIN (link
))
1013 register tree type
= TREE_VALUE (link
);
1015 if (type
&& ! TREE_ASM_WRITTEN (type
))
1016 sdbout_one_type (type
);
1023 /* Given a chain of ..._TYPE nodes, all of which have names,
1024 output definitions of those names, as typedefs. */
1027 sdbout_types (types
)
1028 register tree types
;
1032 for (link
= types
; link
; link
= TREE_CHAIN (link
))
1033 sdbout_one_type (link
);
1035 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1036 sdbout_dequeue_anonymous_types ();
1044 if (type
== error_mark_node
)
1045 type
= integer_type_node
;
1046 PUT_SDB_TYPE (plain_type (type
));
1049 /* Output types of the fields of type TYPE, if they are structs.
1051 Formerly did not chase through pointer types, since that could be circular.
1052 They must come before TYPE, since forward refs are not allowed.
1053 Now james@bigtex.cactus.org says to try them. */
1056 sdbout_field_types (type
)
1061 for (tail
= TYPE_FIELDS (type
); tail
; tail
= TREE_CHAIN (tail
))
1062 /* This condition should match the one for emitting the actual members
1064 if (TREE_CODE (tail
) == FIELD_DECL
1065 && DECL_NAME (tail
) != 0
1066 && ! host_integerp (DECL_SIZE (tail
), 1)
1067 && ! host_integerp (bit_position (tail
), 0))
1069 if (POINTER_TYPE_P (TREE_TYPE (tail
)))
1070 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail
)));
1072 sdbout_one_type (TREE_TYPE (tail
));
1076 /* Use this to put out the top level defined record and union types
1077 for later reference. If this is a struct with a name, then put that
1078 name out. Other unnamed structs will have .xxfake labels generated so
1079 that they may be referred to later.
1080 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1081 It may NOT be called recursively. */
1084 sdbout_one_type (type
)
1087 if (current_function_decl
!= NULL_TREE
1088 && DECL_SECTION_NAME (current_function_decl
) != NULL_TREE
)
1089 ; /* Don't change section amid function. */
1093 switch (TREE_CODE (type
))
1097 case QUAL_UNION_TYPE
:
1099 type
= TYPE_MAIN_VARIANT (type
);
1100 /* Don't output a type twice. */
1101 if (TREE_ASM_WRITTEN (type
))
1102 /* James said test TREE_ASM_BEING_WRITTEN here. */
1105 /* Output nothing if type is not yet defined. */
1106 if (!COMPLETE_TYPE_P (type
))
1109 TREE_ASM_WRITTEN (type
) = 1;
1111 /* This is reputed to cause trouble with the following case,
1112 but perhaps checking TYPE_SIZE above will fix it. */
1114 /* Here is a test case:
1120 typedef struct intermediate {
1124 typedef struct badstr {
1129 TREE_ASM_BEING_WRITTEN (type
) = 1;
1131 /* This change, which ought to make better output,
1132 used to make the COFF assembler unhappy.
1133 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1134 /* Before really doing anything, output types we want to refer to. */
1135 /* Note that in version 1 the following two lines
1136 are not used if forward references are in use. */
1137 if (TREE_CODE (type
) != ENUMERAL_TYPE
)
1138 sdbout_field_types (type
);
1140 TREE_ASM_WRITTEN (type
) = 1;
1144 /* Output a structure type. */
1146 int size
= int_size_in_bytes (type
);
1149 int i
, n_baseclasses
= 0;
1151 /* Record the type tag, but not in its permanent place just yet. */
1152 sdbout_record_type_name (type
);
1154 PUT_SDB_DEF (KNOWN_TYPE_TAG (type
));
1156 switch (TREE_CODE (type
))
1159 case QUAL_UNION_TYPE
:
1160 PUT_SDB_SCL (C_UNTAG
);
1161 PUT_SDB_TYPE (T_UNION
);
1166 PUT_SDB_SCL (C_STRTAG
);
1167 PUT_SDB_TYPE (T_STRUCT
);
1172 PUT_SDB_SCL (C_ENTAG
);
1173 PUT_SDB_TYPE (T_ENUM
);
1181 PUT_SDB_SIZE (size
);
1184 /* Print out the base class information with fields
1185 named after the types they hold. */
1186 /* This is only relevent to aggregate types. TYPE_BINFO is used
1187 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1189 if (TREE_CODE (type
) != ENUMERAL_TYPE
)
1191 if (TYPE_BINFO (type
)
1192 && TYPE_BINFO_BASETYPES (type
))
1193 n_baseclasses
= TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type
));
1194 for (i
= 0; i
< n_baseclasses
; i
++)
1196 tree child
= TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type
)),
1198 tree child_type
= BINFO_TYPE (child
);
1199 tree child_type_name
;
1200 if (TYPE_NAME (child_type
) == 0)
1202 if (TREE_CODE (TYPE_NAME (child_type
)) == IDENTIFIER_NODE
)
1203 child_type_name
= TYPE_NAME (child_type
);
1204 else if (TREE_CODE (TYPE_NAME (child_type
)) == TYPE_DECL
)
1206 child_type_name
= DECL_NAME (TYPE_NAME (child_type
));
1207 if (child_type_name
&& template_name_p (child_type_name
))
1209 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type
));
1215 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name
));
1216 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child
), 0));
1217 PUT_SDB_SCL (member_scl
);
1218 sdbout_type (BINFO_TYPE (child
));
1223 /* output the individual fields */
1225 if (TREE_CODE (type
) == ENUMERAL_TYPE
)
1227 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
1228 if (host_integerp (TREE_VALUE (tem
), 0))
1230 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem
)));
1231 PUT_SDB_INT_VAL (tree_low_cst (TREE_VALUE (tem
), 0));
1232 PUT_SDB_SCL (C_MOE
);
1233 PUT_SDB_TYPE (T_MOE
);
1237 else /* record or union type */
1238 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
1239 /* Output the name, type, position (in bits), size (in bits)
1242 /* Omit here the nameless fields that are used to skip bits.
1243 Also omit fields with variable size or position.
1244 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1245 if (TREE_CODE (tem
) == FIELD_DECL
1246 && DECL_NAME (tem
) != 0
1247 && host_integerp (DECL_SIZE (tem
), 1)
1248 && host_integerp (bit_position (tem
), 0))
1253 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem
));
1255 if (DECL_BIT_FIELD_TYPE (tem
))
1257 PUT_SDB_INT_VAL (int_bit_position (tem
));
1258 PUT_SDB_SCL (C_FIELD
);
1259 sdbout_type (DECL_BIT_FIELD_TYPE (tem
));
1260 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem
), 1));
1264 PUT_SDB_INT_VAL (int_bit_position (tem
) / BITS_PER_UNIT
);
1265 PUT_SDB_SCL (member_scl
);
1266 sdbout_type (TREE_TYPE (tem
));
1270 /* output end of a structure,union, or enumeral definition */
1272 PUT_SDB_PLAIN_DEF ("eos");
1273 PUT_SDB_INT_VAL (size
);
1274 PUT_SDB_SCL (C_EOS
);
1275 PUT_SDB_TAG (KNOWN_TYPE_TAG (type
));
1276 PUT_SDB_SIZE (size
);
1286 /* The following two functions output definitions of function parameters.
1287 Each parameter gets a definition locating it in the parameter list.
1288 Each parameter that is a register variable gets a second definition
1289 locating it in the register.
1291 Printing or argument lists in gdb uses the definitions that
1292 locate in the parameter list. But reference to the variable in
1293 expressions uses preferentially the definition as a register. */
1295 /* Output definitions, referring to storage in the parmlist,
1296 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1299 sdbout_parms (parms
)
1302 for (; parms
; parms
= TREE_CHAIN (parms
))
1303 if (DECL_NAME (parms
))
1305 int current_sym_value
= 0;
1306 const char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1308 if (name
== 0 || *name
== 0)
1309 name
= gen_fake_label ();
1311 /* Perform any necessary register eliminations on the parameter's rtl,
1312 so that the debugging output will be accurate. */
1313 DECL_INCOMING_RTL (parms
)
1314 = eliminate_regs (DECL_INCOMING_RTL (parms
), 0, NULL_RTX
);
1315 DECL_RTL (parms
) = eliminate_regs (DECL_RTL (parms
), 0, NULL_RTX
);
1317 if (PARM_PASSED_IN_MEMORY (parms
))
1319 rtx addr
= XEXP (DECL_INCOMING_RTL (parms
), 0);
1322 /* ??? Here we assume that the parm address is indexed
1323 off the frame pointer or arg pointer.
1324 If that is not true, we produce meaningless results,
1325 but do not crash. */
1326 if (GET_CODE (addr
) == PLUS
1327 && GET_CODE (XEXP (addr
, 1)) == CONST_INT
)
1328 current_sym_value
= INTVAL (XEXP (addr
, 1));
1330 current_sym_value
= 0;
1332 if (GET_CODE (DECL_RTL (parms
)) == REG
1333 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1334 type
= DECL_ARG_TYPE (parms
);
1337 int original_sym_value
= current_sym_value
;
1339 /* This is the case where the parm is passed as an int or
1340 double and it is converted to a char, short or float
1341 and stored back in the parmlist. In this case, describe
1342 the parm with the variable's declared type, and adjust
1343 the address if the least significant bytes (which we are
1344 using) are not the first ones. */
1345 if (BYTES_BIG_ENDIAN
1346 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1347 current_sym_value
+=
1348 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1349 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1351 if (GET_CODE (DECL_RTL (parms
)) == MEM
1352 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1353 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1355 && (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1356 == current_sym_value
))
1357 type
= TREE_TYPE (parms
);
1360 current_sym_value
= original_sym_value
;
1361 type
= DECL_ARG_TYPE (parms
);
1366 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
, addr
));
1367 PUT_SDB_SCL (C_ARG
);
1368 PUT_SDB_TYPE (plain_type (type
));
1371 else if (GET_CODE (DECL_RTL (parms
)) == REG
)
1374 /* Parm passed in registers and lives in registers or nowhere. */
1376 /* If parm lives in a register, use that register;
1377 pretend the parm was passed there. It would be more consistent
1378 to describe the register where the parm was passed,
1379 but in practice that register usually holds something else. */
1380 if (REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1381 best_rtl
= DECL_RTL (parms
);
1382 /* If the parm lives nowhere,
1383 use the register where it was passed. */
1385 best_rtl
= DECL_INCOMING_RTL (parms
);
1388 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl
)));
1389 PUT_SDB_SCL (C_REGPARM
);
1390 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1393 else if (GET_CODE (DECL_RTL (parms
)) == MEM
1394 && XEXP (DECL_RTL (parms
), 0) != const0_rtx
)
1396 /* Parm was passed in registers but lives on the stack. */
1398 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1399 in which case we want the value of that CONST_INT,
1400 or (MEM (REG ...)) or (MEM (MEM ...)),
1401 in which case we use a value of zero. */
1402 if (GET_CODE (XEXP (DECL_RTL (parms
), 0)) == REG
1403 || GET_CODE (XEXP (DECL_RTL (parms
), 0)) == MEM
)
1404 current_sym_value
= 0;
1406 current_sym_value
= INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1));
1408 /* Again, this assumes the offset is based on the arg pointer. */
1410 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
,
1411 XEXP (DECL_RTL (parms
), 0)));
1412 PUT_SDB_SCL (C_ARG
);
1413 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1419 /* Output definitions for the places where parms live during the function,
1420 when different from where they were passed, when the parms were passed
1423 It is not useful to do this for parms passed in registers
1424 that live during the function in different registers, because it is
1425 impossible to look in the passed register for the passed value,
1426 so we use the within-the-function register to begin with.
1428 PARMS is a chain of PARM_DECL nodes. */
1431 sdbout_reg_parms (parms
)
1434 for (; parms
; parms
= TREE_CHAIN (parms
))
1435 if (DECL_NAME (parms
))
1437 const char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1439 /* Report parms that live in registers during the function
1440 but were passed in memory. */
1441 if (GET_CODE (DECL_RTL (parms
)) == REG
1442 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
1443 && PARM_PASSED_IN_MEMORY (parms
))
1445 if (name
== 0 || *name
== 0)
1446 name
= gen_fake_label ();
1448 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms
))));
1449 PUT_SDB_SCL (C_REG
);
1450 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1453 /* Report parms that live in memory but not where they were passed. */
1454 else if (GET_CODE (DECL_RTL (parms
)) == MEM
1455 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1456 && GET_CODE (XEXP (XEXP (DECL_RTL (parms
), 0), 1)) == CONST_INT
1457 && PARM_PASSED_IN_MEMORY (parms
)
1458 && ! rtx_equal_p (DECL_RTL (parms
), DECL_INCOMING_RTL (parms
)))
1460 #if 0 /* ??? It is not clear yet what should replace this. */
1461 int offset
= DECL_OFFSET (parms
) / BITS_PER_UNIT
;
1462 /* A parm declared char is really passed as an int,
1463 so it occupies the least significant bytes.
1464 On a big-endian machine those are not the low-numbered ones. */
1465 if (BYTES_BIG_ENDIAN
1467 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1468 offset
+= (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1469 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1470 if (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1)) != offset
) {...}
1473 if (name
== 0 || *name
== 0)
1474 name
= gen_fake_label ();
1476 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1477 (XEXP (DECL_RTL (parms
), 0)));
1478 PUT_SDB_SCL (C_AUTO
);
1479 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1486 /* Describe the beginning of an internal block within a function.
1487 Also output descriptions of variables defined in this block.
1489 N is the number of the block, by order of beginning, counting from 1,
1490 and not counting the outermost (function top-level) block.
1491 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1492 if the count starts at 0 for the outermost one. */
1495 sdbout_begin_block (file
, line
, n
)
1496 FILE *file ATTRIBUTE_UNUSED
;
1500 tree decl
= current_function_decl
;
1501 MAKE_LINE_SAFE (line
);
1503 /* The SCO compiler does not emit a separate block for the function level
1504 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1505 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1506 #ifndef MIPS_DEBUGGING_INFO
1509 PUT_SDB_BLOCK_START (line
- sdb_begin_function_line
);
1513 /* Include the outermost BLOCK's variables in block 1. */
1514 do_block
= BLOCK_NUMBER (DECL_INITIAL (decl
));
1515 sdbout_block (DECL_INITIAL (decl
));
1517 /* If -g1, suppress all the internal symbols of functions
1518 except for arguments. */
1519 if (debug_info_level
!= DINFO_LEVEL_TERSE
)
1522 sdbout_block (DECL_INITIAL (decl
));
1525 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1526 sdbout_dequeue_anonymous_types ();
1530 /* Describe the end line-number of an internal block within a function. */
1533 sdbout_end_block (file
, line
, n
)
1534 FILE *file ATTRIBUTE_UNUSED
;
1536 int n ATTRIBUTE_UNUSED
;
1538 MAKE_LINE_SAFE (line
);
1540 /* The SCO compiler does not emit a separate block for the function level
1541 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1542 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1543 #ifndef MIPS_DEBUGGING_INFO
1546 PUT_SDB_BLOCK_END (line
- sdb_begin_function_line
);
1549 /* Output sdb info for the current function name.
1550 Called from assemble_start_function. */
1553 sdbout_mark_begin_function ()
1555 sdbout_symbol (current_function_decl
, 0);
1558 /* Called at beginning of function body (after prologue).
1559 Record the function's starting line number, so we can output
1560 relative line numbers for the other lines.
1561 Describe beginning of outermost block.
1562 Also describe the parameter list. */
1565 sdbout_begin_function (line
)
1568 sdb_begin_function_line
= line
- 1;
1569 PUT_SDB_FUNCTION_START (line
);
1570 sdbout_parms (DECL_ARGUMENTS (current_function_decl
));
1571 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl
));
1574 /* Called at end of function (before epilogue).
1575 Describe end of outermost block. */
1578 sdbout_end_function (line
)
1581 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1582 sdbout_dequeue_anonymous_types ();
1585 MAKE_LINE_SAFE (line
);
1586 PUT_SDB_FUNCTION_END (line
- sdb_begin_function_line
);
1588 /* Indicate we are between functions, for line-number output. */
1589 sdb_begin_function_line
= -1;
1592 /* Output sdb info for the absolute end of a function.
1593 Called after the epilogue is output. */
1596 sdbout_end_epilogue ()
1598 PUT_SDB_EPILOGUE_END
1599 (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl
)));
1602 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1609 PUT_SDB_DEF (LABEL_NAME (insn
));
1611 PUT_SDB_SCL (C_LABEL
);
1612 PUT_SDB_TYPE (T_NULL
);
1616 /* Change to reading from a new source file. */
1619 sdbout_start_new_source_file (filename
)
1620 const char *filename ATTRIBUTE_UNUSED
;
1622 #ifdef MIPS_DEBUGGING_INFO
1623 struct sdb_file
*n
= (struct sdb_file
*) xmalloc (sizeof *n
);
1625 n
->next
= current_file
;
1628 PUT_SDB_SRC_FILE (filename
);
1632 /* Revert to reading a previous source file. */
1635 sdbout_resume_previous_source_file ()
1637 #ifdef MIPS_DEBUGGING_INFO
1638 struct sdb_file
*next
;
1640 next
= current_file
->next
;
1641 free (current_file
);
1642 current_file
= next
;
1643 PUT_SDB_SRC_FILE (current_file
->name
);
1647 #endif /* SDB_DEBUGGING_INFO */