1 /* Output sdb-format symbol table information from GNU compiler.
2 Copyright (C) 1988, 92-97, 1998 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* mike@tredysvr.Tredydev.Unisys.COM says:
22 I modified the struct.c example and have a nm of a .o resulting from the
23 AT&T C compiler. From the example below I would conclude the following:
25 1. All .defs from structures are emitted as scanned. The example below
26 clearly shows the symbol table entries for BoxRec2 are after the first
29 2. All functions and their locals (including statics) are emitted as scanned.
31 3. All nested unnamed union and structure .defs must be emitted before
32 the structure in which they are nested. The AT&T assembler is a
33 one pass beast as far as symbolics are concerned.
35 4. All structure .defs are emitted before the typedefs that refer to them.
37 5. All top level static and external variable definitions are moved to the
38 end of file with all top level statics occurring first before externs.
40 6. All undefined references are at the end of the file.
45 #ifdef SDB_DEBUGGING_INFO
53 #include "insn-config.h"
58 /* Mips systems use the SDB functions to dump out symbols, but do not
59 supply usable syms.h include files. Which syms.h file to use is a
60 target parameter so don't use the native one if we're cross compiling. */
62 #if defined(USG) && !defined(MIPS) && !defined (hpux) && !defined(_WIN32) && !defined(__linux__) && !defined(CROSS_COMPILE)
64 /* Use T_INT if we don't have T_VOID. */
72 /* #include <storclass.h> used to be this instead of syms.h. */
74 /* 1 if PARM is passed to this function in memory. */
76 #define PARM_PASSED_IN_MEMORY(PARM) \
77 (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
79 /* A C expression for the integer offset value of an automatic variable
80 (C_AUTO) having address X (an RTX). */
81 #ifndef DEBUGGER_AUTO_OFFSET
82 #define DEBUGGER_AUTO_OFFSET(X) \
83 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
86 /* A C expression for the integer offset value of an argument (C_ARG)
87 having address X (an RTX). The nominal offset is OFFSET. */
88 #ifndef DEBUGGER_ARG_OFFSET
89 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
92 /* Line number of beginning of current function, minus one.
93 Negative means not in a function or not using sdb. */
95 int sdb_begin_function_line
= -1;
97 /* Counter to generate unique "names" for nameless struct members. */
99 static int unnamed_struct_number
= 0;
101 extern FILE *asm_out_file
;
103 extern tree current_function_decl
;
107 static char *gen_fake_label
PROTO((void));
108 static int plain_type
PROTO((tree
));
109 static int template_name_p
PROTO((tree
));
110 static void sdbout_record_type_name
PROTO((tree
));
111 static int plain_type_1
PROTO((tree
, int));
112 static void sdbout_block
PROTO((tree
));
113 static void sdbout_syms
PROTO((tree
));
114 static void sdbout_queue_anonymous_type
PROTO((tree
));
115 static void sdbout_dequeue_anonymous_types
PROTO((void));
116 static void sdbout_type
PROTO((tree
));
117 static void sdbout_field_types
PROTO((tree
));
118 static void sdbout_one_type
PROTO((tree
));
119 static void sdbout_parms
PROTO((tree
));
120 static void sdbout_reg_parms
PROTO((tree
));
122 /* Define the default sizes for various types. */
124 #ifndef CHAR_TYPE_SIZE
125 #define CHAR_TYPE_SIZE BITS_PER_UNIT
128 #ifndef SHORT_TYPE_SIZE
129 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
132 #ifndef INT_TYPE_SIZE
133 #define INT_TYPE_SIZE BITS_PER_WORD
136 #ifndef LONG_TYPE_SIZE
137 #define LONG_TYPE_SIZE BITS_PER_WORD
140 #ifndef LONG_LONG_TYPE_SIZE
141 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
144 #ifndef FLOAT_TYPE_SIZE
145 #define FLOAT_TYPE_SIZE BITS_PER_WORD
148 #ifndef DOUBLE_TYPE_SIZE
149 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
152 #ifndef LONG_DOUBLE_TYPE_SIZE
153 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
156 /* Random macros describing parts of SDB data. */
158 /* Put something here if lines get too long */
161 /* Default value of delimiter is ";". */
163 #define SDB_DELIM ";"
166 /* Maximum number of dimensions the assembler will allow. */
168 #define SDB_MAX_DIM 4
172 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
175 #ifndef PUT_SDB_INT_VAL
176 #define PUT_SDB_INT_VAL(a) \
178 fputs ("\t.val\t", asm_out_file); \
179 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
180 fprintf (asm_out_file, "%s", SDB_DELIM); \
186 #define PUT_SDB_VAL(a) \
187 ( fputs ("\t.val\t", asm_out_file), \
188 output_addr_const (asm_out_file, (a)), \
189 fprintf (asm_out_file, SDB_DELIM))
193 #define PUT_SDB_DEF(a) \
194 do { fprintf (asm_out_file, "\t.def\t"); \
195 ASM_OUTPUT_LABELREF (asm_out_file, a); \
196 fprintf (asm_out_file, SDB_DELIM); } while (0)
199 #ifndef PUT_SDB_PLAIN_DEF
200 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
203 #ifndef PUT_SDB_ENDEF
204 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
208 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
212 #define PUT_SDB_SIZE(a) \
214 fputs ("\t.size\t", asm_out_file); \
215 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
216 fprintf (asm_out_file, "%s", SDB_DELIM); \
220 #ifndef PUT_SDB_START_DIM
221 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
224 #ifndef PUT_SDB_NEXT_DIM
225 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
228 #ifndef PUT_SDB_LAST_DIM
229 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
233 #define PUT_SDB_TAG(a) \
234 do { fprintf (asm_out_file, "\t.tag\t"); \
235 ASM_OUTPUT_LABELREF (asm_out_file, a); \
236 fprintf (asm_out_file, SDB_DELIM); } while (0)
239 #ifndef PUT_SDB_BLOCK_START
240 #define PUT_SDB_BLOCK_START(LINE) \
241 fprintf (asm_out_file, \
242 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
243 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
246 #ifndef PUT_SDB_BLOCK_END
247 #define PUT_SDB_BLOCK_END(LINE) \
248 fprintf (asm_out_file, \
249 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
250 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
253 #ifndef PUT_SDB_FUNCTION_START
254 #define PUT_SDB_FUNCTION_START(LINE) \
255 fprintf (asm_out_file, \
256 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
257 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
260 #ifndef PUT_SDB_FUNCTION_END
261 #define PUT_SDB_FUNCTION_END(LINE) \
262 fprintf (asm_out_file, \
263 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
264 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
267 #ifndef PUT_SDB_EPILOGUE_END
268 #define PUT_SDB_EPILOGUE_END(NAME) \
269 do { fprintf (asm_out_file, "\t.def\t"); \
270 ASM_OUTPUT_LABELREF (asm_out_file, NAME); \
271 fprintf (asm_out_file, \
272 "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", \
273 SDB_DELIM, SDB_DELIM, SDB_DELIM); } while (0)
276 #ifndef SDB_GENERATE_FAKE
277 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
278 sprintf ((BUFFER), ".%dfake", (NUMBER));
281 /* Return the sdb tag identifier string for TYPE
282 if TYPE has already been defined; otherwise return a null pointer. */
284 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
286 /* Set the sdb tag identifier string for TYPE to NAME. */
288 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
289 TYPE_SYMTAB_POINTER (TYPE) = (NAME)
291 /* Return the name (a string) of the struct, union or enum tag
292 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
294 #define TAG_NAME(link) \
295 (((link) && TREE_PURPOSE ((link)) \
296 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
297 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
299 /* Ensure we don't output a negative line number. */
300 #define MAKE_LINE_SAFE(line) \
301 if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1
303 /* Perform linker optimization of merging header file definitions together
304 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a
305 post 960826 version of GAS. Nothing breaks with earlier versions of GAS,
306 the optimization just won't be done. The native assembler already has the
307 necessary support. */
309 #ifdef MIPS_DEBUGGING_INFO
311 #ifndef PUT_SDB_SRC_FILE
312 #define PUT_SDB_SRC_FILE(FILENAME) \
313 output_file_directive (asm_out_file, (FILENAME))
316 /* ECOFF linkers have an optimization that does the same kind of thing as
317 N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the
318 executable. To achieve this, GCC must output a .file for each file
321 /* This is a stack of input files. */
325 struct sdb_file
*next
;
329 /* This is the top of the stack. */
331 static struct sdb_file
*current_file
;
333 #endif /* MIPS_DEBUGGING_INFO */
335 /* Set up for SDB output at the start of compilation. */
338 sdbout_init (asm_file
, input_file_name
, syms
)
340 char *input_file_name
;
343 #ifdef MIPS_DEBUGGING_INFO
344 current_file
= (struct sdb_file
*) xmalloc (sizeof *current_file
);
345 current_file
->next
= NULL
;
346 current_file
->name
= input_file_name
;
349 #ifdef RMS_QUICK_HACK_1
351 for (t
= syms
; t
; t
= TREE_CHAIN (t
))
352 if (DECL_NAME (t
) && IDENTIFIER_POINTER (DECL_NAME (t
)) != 0
353 && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t
)), "__vtbl_ptr_type"))
354 sdbout_symbol (t
, 0);
360 /* return the tag identifier for type
364 tag_of_ru_type (type
,link
)
367 if (TYPE_SYMTAB_ADDRESS (type
))
368 return TYPE_SYMTAB_ADDRESS (type
);
369 if (link
&& TREE_PURPOSE (link
)
370 && IDENTIFIER_POINTER (TREE_PURPOSE (link
)))
371 TYPE_SYMTAB_ADDRESS (type
) = IDENTIFIER_POINTER (TREE_PURPOSE (link
));
373 return (char *) TYPE_SYMTAB_ADDRESS (type
);
377 /* Return a unique string to name an anonymous type. */
384 SDB_GENERATE_FAKE (label
, unnamed_struct_number
);
385 unnamed_struct_number
++;
386 labelstr
= (char *) permalloc (strlen (label
) + 1);
387 strcpy (labelstr
, label
);
391 /* Return the number which describes TYPE for SDB.
392 For pointers, etc., this function is recursive.
393 Each record, union or enumeral type must already have had a
394 tag number output. */
396 /* The number is given by d6d5d4d3d2d1bbbb
397 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
398 Thus, char *foo () has bbbb=T_CHAR
401 N_BTMASK= 017 1111 basic type field.
402 N_TSHIFT= 2 derived type shift
403 N_BTSHFT= 4 Basic type shift */
405 /* Produce the number that describes a pointer, function or array type.
406 PREV is the number describing the target, value or element type.
407 DT_type describes how to transform that type. */
408 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
409 ((((PREV) & ~(int)N_BTMASK) << (int)N_TSHIFT) \
410 | ((int)DT_type << (int)N_BTSHFT) \
411 | ((PREV) & (int)N_BTMASK))
413 /* Number of elements used in sdb_dims. */
414 static int sdb_n_dims
= 0;
416 /* Table of array dimensions of current type. */
417 static int sdb_dims
[SDB_MAX_DIM
];
419 /* Size of outermost array currently being processed. */
420 static int sdb_type_size
= -1;
426 int val
= plain_type_1 (type
, 0);
428 /* If we have already saved up some array dimensions, print them now. */
433 for (i
= sdb_n_dims
- 1; i
> 0; i
--)
434 PUT_SDB_NEXT_DIM (sdb_dims
[i
]);
435 PUT_SDB_LAST_DIM (sdb_dims
[0]);
438 sdb_type_size
= int_size_in_bytes (type
);
439 /* Don't kill sdb if type is not laid out or has variable size. */
440 if (sdb_type_size
< 0)
443 /* If we have computed the size of an array containing this type,
445 if (sdb_type_size
>= 0)
447 PUT_SDB_SIZE (sdb_type_size
);
454 template_name_p (name
)
457 register char *ptr
= IDENTIFIER_POINTER (name
);
458 while (*ptr
&& *ptr
!= '<')
465 sdbout_record_type_name (type
)
471 if (KNOWN_TYPE_TAG (type
))
474 if (TYPE_NAME (type
) != 0)
477 /* Find the IDENTIFIER_NODE for the type name. */
478 if (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
)
479 t
= TYPE_NAME (type
);
480 else if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
482 t
= DECL_NAME (TYPE_NAME (type
));
483 /* The DECL_NAME for templates includes "<>", which breaks
484 most assemblers. Use its assembler name instead, which
485 has been mangled into being safe. */
486 if (t
&& template_name_p (t
))
487 t
= DECL_ASSEMBLER_NAME (TYPE_NAME (type
));
490 /* Now get the name as a string, or invent one. */
492 name
= IDENTIFIER_POINTER (t
);
495 no_name
= (name
== 0 || *name
== 0);
497 name
= gen_fake_label ();
499 SET_KNOWN_TYPE_TAG (type
, name
);
500 #ifdef SDB_ALLOW_FORWARD_REFERENCES
502 sdbout_queue_anonymous_type (type
);
506 /* Return the .type value for type TYPE.
508 LEVEL indicates how many levels deep we have recursed into the type.
509 The SDB debug format can only represent 6 derived levels of types.
510 After that, we must output inaccurate debug info. We deliberately
511 stop before the 7th level, so that ADA recursive types will not give an
515 plain_type_1 (type
, level
)
520 type
= void_type_node
;
521 else if (type
== error_mark_node
)
522 type
= integer_type_node
;
524 type
= TYPE_MAIN_VARIANT (type
);
526 switch (TREE_CODE (type
))
532 int size
= int_size_in_bytes (type
) * BITS_PER_UNIT
;
534 /* Carefully distinguish all the standard types of C,
535 without messing up if the language is not C.
536 Note that we check only for the names that contain spaces;
537 other names might occur by coincidence in other languages. */
538 if (TYPE_NAME (type
) != 0
539 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
540 && DECL_NAME (TYPE_NAME (type
)) != 0
541 && TREE_CODE (DECL_NAME (TYPE_NAME (type
))) == IDENTIFIER_NODE
)
543 char *name
= IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type
)));
545 if (!strcmp (name
, "char"))
547 if (!strcmp (name
, "unsigned char"))
549 if (!strcmp (name
, "signed char"))
551 if (!strcmp (name
, "int"))
553 if (!strcmp (name
, "unsigned int"))
555 if (!strcmp (name
, "short int"))
557 if (!strcmp (name
, "short unsigned int"))
559 if (!strcmp (name
, "long int"))
561 if (!strcmp (name
, "long unsigned int"))
565 if (size
== INT_TYPE_SIZE
)
566 return (TREE_UNSIGNED (type
) ? T_UINT
: T_INT
);
567 if (size
== CHAR_TYPE_SIZE
)
568 return (TREE_UNSIGNED (type
) ? T_UCHAR
: T_CHAR
);
569 if (size
== SHORT_TYPE_SIZE
)
570 return (TREE_UNSIGNED (type
) ? T_USHORT
: T_SHORT
);
571 if (size
== LONG_TYPE_SIZE
)
572 return (TREE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
573 if (size
== LONG_LONG_TYPE_SIZE
) /* better than nothing */
574 return (TREE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
580 int precision
= TYPE_PRECISION (type
);
581 if (precision
== FLOAT_TYPE_SIZE
)
583 if (precision
== DOUBLE_TYPE_SIZE
)
585 #ifdef EXTENDED_SDB_BASIC_TYPES
586 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
589 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
590 return T_DOUBLE
; /* better than nothing */
601 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
602 if (sdb_n_dims
< SDB_MAX_DIM
)
603 sdb_dims
[sdb_n_dims
++]
604 = (TYPE_DOMAIN (type
)
605 && TYPE_MAX_VALUE (TYPE_DOMAIN (type
))
606 && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type
))) == INTEGER_CST
607 && TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (type
))) == INTEGER_CST
608 ? (TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)))
609 - TREE_INT_CST_LOW (TYPE_MIN_VALUE (TYPE_DOMAIN (type
))) + 1)
611 return PUSH_DERIVED_LEVEL (DT_ARY
, m
);
616 case QUAL_UNION_TYPE
:
620 #ifdef SDB_ALLOW_FORWARD_REFERENCES
621 sdbout_record_type_name (type
);
623 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
624 if ((TREE_ASM_WRITTEN (type
) && KNOWN_TYPE_TAG (type
) != 0)
625 #ifdef SDB_ALLOW_FORWARD_REFERENCES
626 || TYPE_MODE (type
) != VOIDmode
631 /* Output the referenced structure tag name
632 only if the .def has already been finished.
633 At least on 386, the Unix assembler
634 cannot handle forward references to tags. */
635 /* But the 88100, it requires them, sigh... */
636 /* And the MIPS requires unknown refs as well... */
637 tag
= KNOWN_TYPE_TAG (type
);
639 /* These 3 lines used to follow the close brace.
640 However, a size of 0 without a tag implies a tag of 0,
641 so if we don't know a tag, we can't mention the size. */
642 sdb_type_size
= int_size_in_bytes (type
);
643 if (sdb_type_size
< 0)
646 return ((TREE_CODE (type
) == RECORD_TYPE
) ? T_STRUCT
647 : (TREE_CODE (type
) == UNION_TYPE
) ? T_UNION
648 : (TREE_CODE (type
) == QUAL_UNION_TYPE
) ? T_UNION
658 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
659 return PUSH_DERIVED_LEVEL (DT_PTR
, m
);
668 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
669 return PUSH_DERIVED_LEVEL (DT_FCN
, m
);
676 /* Output the symbols defined in block number DO_BLOCK.
677 Set NEXT_BLOCK_NUMBER to 0 before calling.
679 This function works by walking the tree structure of blocks,
680 counting blocks until it finds the desired block. */
682 static int do_block
= 0;
684 static int next_block_number
;
692 /* Ignore blocks never expanded or otherwise marked as real. */
693 if (TREE_USED (block
))
695 /* When we reach the specified block, output its symbols. */
696 if (next_block_number
== do_block
)
698 sdbout_syms (BLOCK_VARS (block
));
701 /* If we are past the specified block, stop the scan. */
702 if (next_block_number
> do_block
)
707 /* Scan the blocks within this block. */
708 sdbout_block (BLOCK_SUBBLOCKS (block
));
711 block
= BLOCK_CHAIN (block
);
715 /* Call sdbout_symbol on each decl in the chain SYMS. */
723 if (TREE_CODE (syms
) != LABEL_DECL
)
724 sdbout_symbol (syms
, 1);
725 syms
= TREE_CHAIN (syms
);
729 /* Output SDB information for a symbol described by DECL.
730 LOCAL is nonzero if the symbol is not file-scope. */
733 sdbout_symbol (decl
, local
)
737 tree type
= TREE_TYPE (decl
);
738 tree context
= NULL_TREE
;
743 sdbout_one_type (type
);
745 #if 0 /* This loses when functions are marked to be ignored,
746 which happens in the C++ front end. */
747 if (DECL_IGNORED_P (decl
))
751 switch (TREE_CODE (decl
))
754 /* Enum values are defined by defining the enum type. */
758 /* Don't mention a nested function under its parent. */
759 context
= decl_function_context (decl
);
760 if (context
== current_function_decl
)
762 /* Check DECL_INITIAL to distinguish declarations from definitions.
763 Don't output debug info here for declarations; they will have
764 a DECL_INITIAL value of 0. */
765 if (! DECL_INITIAL (decl
))
767 if (GET_CODE (DECL_RTL (decl
)) != MEM
768 || GET_CODE (XEXP (DECL_RTL (decl
), 0)) != SYMBOL_REF
)
770 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
771 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
772 PUT_SDB_SCL (TREE_PUBLIC (decl
) ? C_EXT
: C_STAT
);
776 /* Done with tagged types. */
777 if (DECL_NAME (decl
) == 0)
779 if (DECL_IGNORED_P (decl
))
782 /* Output typedef name. */
783 if (template_name_p (DECL_NAME (decl
)))
784 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
786 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl
)));
787 PUT_SDB_SCL (C_TPDEF
);
791 /* Parm decls go in their own separate chains
792 and are output by sdbout_reg_parms and sdbout_parms. */
796 /* Don't mention a variable that is external.
797 Let the file that defines it describe it. */
798 if (DECL_EXTERNAL (decl
))
801 /* Ignore __FUNCTION__, etc. */
802 if (DECL_IGNORED_P (decl
))
805 /* If there was an error in the declaration, don't dump core
806 if there is no RTL associated with the variable doesn't
808 if (DECL_RTL (decl
) == 0)
811 DECL_RTL (decl
) = eliminate_regs (DECL_RTL (decl
), 0, NULL_RTX
);
812 #ifdef LEAF_REG_REMAP
814 leaf_renumber_regs_insn (DECL_RTL (decl
));
816 value
= DECL_RTL (decl
);
818 /* Don't mention a variable at all
819 if it was completely optimized into nothingness.
821 If DECL was from an inline function, then its rtl
822 is not identically the rtl that was used in this
823 particular compilation. */
824 if (GET_CODE (value
) == REG
)
826 regno
= REGNO (DECL_RTL (decl
));
827 if (regno
>= FIRST_PSEUDO_REGISTER
)
830 else if (GET_CODE (value
) == SUBREG
)
833 while (GET_CODE (value
) == SUBREG
)
835 offset
+= SUBREG_WORD (value
);
836 value
= SUBREG_REG (value
);
838 if (GET_CODE (value
) == REG
)
840 regno
= REGNO (value
);
841 if (regno
>= FIRST_PSEUDO_REGISTER
)
845 alter_subreg (DECL_RTL (decl
));
846 value
= DECL_RTL (decl
);
848 /* Don't output anything if an auto variable
849 gets RTL that is static.
850 GAS version 2.2 can't handle such output. */
851 else if (GET_CODE (value
) == MEM
&& CONSTANT_P (XEXP (value
, 0))
852 && ! TREE_STATIC (decl
))
855 /* Emit any structure, union, or enum type that has not been output.
856 This occurs for tag-less structs (et al) used to declare variables
858 if (TREE_CODE (type
) == ENUMERAL_TYPE
859 || TREE_CODE (type
) == RECORD_TYPE
860 || TREE_CODE (type
) == UNION_TYPE
861 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
863 if (TYPE_SIZE (type
) != 0 /* not a forward reference */
864 && KNOWN_TYPE_TAG (type
) == 0) /* not yet declared */
865 sdbout_one_type (type
);
868 /* Defer SDB information for top-level initialized variables! */
870 && GET_CODE (value
) == MEM
871 && DECL_INITIAL (decl
))
874 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
875 For now, avoid crashing. */
876 if (DECL_NAME (decl
) == NULL_TREE
)
879 /* Record the name for, starting a symtab entry. */
880 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
));
882 if (GET_CODE (value
) == MEM
883 && GET_CODE (XEXP (value
, 0)) == SYMBOL_REF
)
886 if (TREE_PUBLIC (decl
))
888 PUT_SDB_VAL (XEXP (value
, 0));
893 PUT_SDB_VAL (XEXP (value
, 0));
894 PUT_SDB_SCL (C_STAT
);
900 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno
));
903 else if (GET_CODE (value
) == MEM
904 && (GET_CODE (XEXP (value
, 0)) == MEM
905 || (GET_CODE (XEXP (value
, 0)) == REG
906 && REGNO (XEXP (value
, 0)) != HARD_FRAME_POINTER_REGNUM
907 && REGNO (XEXP (value
, 0)) != STACK_POINTER_REGNUM
)))
908 /* If the value is indirect by memory or by a register
909 that isn't the frame pointer
910 then it means the object is variable-sized and address through
911 that register or stack slot. COFF has no way to represent this
912 so all we can do is output the variable as a pointer. */
915 if (GET_CODE (XEXP (value
, 0)) == REG
)
917 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value
, 0))));
922 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
924 We want the value of that CONST_INT. */
925 /* Encore compiler hates a newline in a macro arg, it seems. */
926 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
927 (XEXP (XEXP (value
, 0), 0)));
928 PUT_SDB_SCL (C_AUTO
);
931 type
= build_pointer_type (TREE_TYPE (decl
));
933 else if (GET_CODE (value
) == MEM
934 && ((GET_CODE (XEXP (value
, 0)) == PLUS
935 && GET_CODE (XEXP (XEXP (value
, 0), 0)) == REG
936 && GET_CODE (XEXP (XEXP (value
, 0), 1)) == CONST_INT
)
937 /* This is for variables which are at offset zero from
938 the frame pointer. This happens on the Alpha.
939 Non-frame pointer registers are excluded above. */
940 || (GET_CODE (XEXP (value
, 0)) == REG
)))
942 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
943 or (MEM (REG...)). We want the value of that CONST_INT
946 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value
, 0)));
947 PUT_SDB_SCL (C_AUTO
);
949 else if (GET_CODE (value
) == MEM
&& GET_CODE (XEXP (value
, 0)) == CONST
)
951 /* Handle an obscure case which can arise when optimizing and
952 when there are few available registers. (This is *always*
953 the case for i386/i486 targets). The DECL_RTL looks like
954 (MEM (CONST ...)) even though this variable is a local `auto'
955 or a local `register' variable. In effect, what has happened
956 is that the reload pass has seen that all assignments and
957 references for one such a local variable can be replaced by
958 equivalent assignments and references to some static storage
959 variable, thereby avoiding the need for a register. In such
960 cases we're forced to lie to debuggers and tell them that
961 this variable was itself `static'. */
963 PUT_SDB_VAL (XEXP (XEXP (value
, 0), 0));
964 PUT_SDB_SCL (C_STAT
);
968 /* It is something we don't know how to represent for SDB. */
976 PUT_SDB_TYPE (plain_type (type
));
980 /* Output SDB information for a top-level initialized variable
981 that has been delayed. */
984 sdbout_toplevel_data (decl
)
987 tree type
= TREE_TYPE (decl
);
989 if (DECL_IGNORED_P (decl
))
992 if (! (TREE_CODE (decl
) == VAR_DECL
993 && GET_CODE (DECL_RTL (decl
)) == MEM
994 && DECL_INITIAL (decl
)))
997 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
998 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
999 if (TREE_PUBLIC (decl
))
1001 PUT_SDB_SCL (C_EXT
);
1005 PUT_SDB_SCL (C_STAT
);
1007 PUT_SDB_TYPE (plain_type (type
));
1011 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1013 /* Machinery to record and output anonymous types. */
1015 static tree anonymous_types
;
1018 sdbout_queue_anonymous_type (type
)
1021 anonymous_types
= saveable_tree_cons (NULL_TREE
, type
, anonymous_types
);
1025 sdbout_dequeue_anonymous_types ()
1027 register tree types
, link
;
1029 while (anonymous_types
)
1031 types
= nreverse (anonymous_types
);
1032 anonymous_types
= NULL_TREE
;
1034 for (link
= types
; link
; link
= TREE_CHAIN (link
))
1036 register tree type
= TREE_VALUE (link
);
1038 if (type
&& ! TREE_ASM_WRITTEN (type
))
1039 sdbout_one_type (type
);
1046 /* Given a chain of ..._TYPE nodes, all of which have names,
1047 output definitions of those names, as typedefs. */
1050 sdbout_types (types
)
1051 register tree types
;
1055 for (link
= types
; link
; link
= TREE_CHAIN (link
))
1056 sdbout_one_type (link
);
1058 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1059 sdbout_dequeue_anonymous_types ();
1067 if (type
== error_mark_node
)
1068 type
= integer_type_node
;
1069 PUT_SDB_TYPE (plain_type (type
));
1072 /* Output types of the fields of type TYPE, if they are structs.
1074 Formerly did not chase through pointer types, since that could be circular.
1075 They must come before TYPE, since forward refs are not allowed.
1076 Now james@bigtex.cactus.org says to try them. */
1079 sdbout_field_types (type
)
1084 for (tail
= TYPE_FIELDS (type
); tail
; tail
= TREE_CHAIN (tail
))
1085 /* This condition should match the one for emitting the actual members
1087 if (TREE_CODE (tail
) == FIELD_DECL
1088 && DECL_NAME (tail
) != 0
1089 && TREE_CODE (DECL_SIZE (tail
)) == INTEGER_CST
1090 && TREE_CODE (DECL_FIELD_BITPOS (tail
)) == INTEGER_CST
)
1092 if (POINTER_TYPE_P (TREE_TYPE (tail
)))
1093 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail
)));
1095 sdbout_one_type (TREE_TYPE (tail
));
1099 /* Use this to put out the top level defined record and union types
1100 for later reference. If this is a struct with a name, then put that
1101 name out. Other unnamed structs will have .xxfake labels generated so
1102 that they may be referred to later.
1103 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1104 It may NOT be called recursively. */
1107 sdbout_one_type (type
)
1110 if (current_function_decl
!= NULL_TREE
1111 && DECL_SECTION_NAME (current_function_decl
) != NULL_TREE
)
1112 ; /* Don't change section amid function. */
1116 switch (TREE_CODE (type
))
1120 case QUAL_UNION_TYPE
:
1122 type
= TYPE_MAIN_VARIANT (type
);
1123 /* Don't output a type twice. */
1124 if (TREE_ASM_WRITTEN (type
))
1125 /* James said test TREE_ASM_BEING_WRITTEN here. */
1128 /* Output nothing if type is not yet defined. */
1129 if (TYPE_SIZE (type
) == 0)
1132 TREE_ASM_WRITTEN (type
) = 1;
1134 /* This is reputed to cause trouble with the following case,
1135 but perhaps checking TYPE_SIZE above will fix it. */
1137 /* Here is a test case:
1143 typedef struct intermediate {
1147 typedef struct badstr {
1152 TREE_ASM_BEING_WRITTEN (type
) = 1;
1154 /* This change, which ought to make better output,
1155 used to make the COFF assembler unhappy.
1156 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1157 /* Before really doing anything, output types we want to refer to. */
1158 /* Note that in version 1 the following two lines
1159 are not used if forward references are in use. */
1160 if (TREE_CODE (type
) != ENUMERAL_TYPE
)
1161 sdbout_field_types (type
);
1163 TREE_ASM_WRITTEN (type
) = 1;
1167 /* Output a structure type. */
1169 int size
= int_size_in_bytes (type
);
1172 int i
, n_baseclasses
= 0;
1174 /* Record the type tag, but not in its permanent place just yet. */
1175 sdbout_record_type_name (type
);
1177 PUT_SDB_DEF (KNOWN_TYPE_TAG (type
));
1179 switch (TREE_CODE (type
))
1182 case QUAL_UNION_TYPE
:
1183 PUT_SDB_SCL (C_UNTAG
);
1184 PUT_SDB_TYPE (T_UNION
);
1189 PUT_SDB_SCL (C_STRTAG
);
1190 PUT_SDB_TYPE (T_STRUCT
);
1195 PUT_SDB_SCL (C_ENTAG
);
1196 PUT_SDB_TYPE (T_ENUM
);
1204 PUT_SDB_SIZE (size
);
1207 /* Print out the base class information with fields
1208 named after the types they hold. */
1209 /* This is only relevent to aggregate types. TYPE_BINFO is used
1210 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1212 if (TREE_CODE (type
) != ENUMERAL_TYPE
)
1214 if (TYPE_BINFO (type
)
1215 && TYPE_BINFO_BASETYPES (type
))
1216 n_baseclasses
= TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type
));
1217 for (i
= 0; i
< n_baseclasses
; i
++)
1219 tree child
= TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type
)),
1221 tree child_type
= BINFO_TYPE (child
);
1222 tree child_type_name
;
1223 if (TYPE_NAME (child_type
) == 0)
1225 if (TREE_CODE (TYPE_NAME (child_type
)) == IDENTIFIER_NODE
)
1226 child_type_name
= TYPE_NAME (child_type
);
1227 else if (TREE_CODE (TYPE_NAME (child_type
)) == TYPE_DECL
)
1229 child_type_name
= DECL_NAME (TYPE_NAME (child_type
));
1230 if (child_type_name
&& template_name_p (child_type_name
))
1232 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type
));
1238 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name
));
1239 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (BINFO_OFFSET (child
)));
1240 PUT_SDB_SCL (member_scl
);
1241 sdbout_type (BINFO_TYPE (child
));
1246 /* output the individual fields */
1248 if (TREE_CODE (type
) == ENUMERAL_TYPE
)
1249 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
1251 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem
)));
1252 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (TREE_VALUE (tem
)));
1253 PUT_SDB_SCL (C_MOE
);
1254 PUT_SDB_TYPE (T_MOE
);
1258 else /* record or union type */
1259 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
1260 /* Output the name, type, position (in bits), size (in bits)
1263 /* Omit here the nameless fields that are used to skip bits.
1264 Also omit fields with variable size or position.
1265 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1266 if (TREE_CODE (tem
) == FIELD_DECL
1267 && DECL_NAME (tem
) != 0
1268 && TREE_CODE (DECL_SIZE (tem
)) == INTEGER_CST
1269 && TREE_CODE (DECL_FIELD_BITPOS (tem
)) == INTEGER_CST
)
1274 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem
));
1276 if (DECL_BIT_FIELD_TYPE (tem
))
1278 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem
)));
1279 PUT_SDB_SCL (C_FIELD
);
1280 sdbout_type (DECL_BIT_FIELD_TYPE (tem
));
1281 PUT_SDB_SIZE (TREE_INT_CST_LOW (DECL_SIZE (tem
)));
1285 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem
))
1287 PUT_SDB_SCL (member_scl
);
1288 sdbout_type (TREE_TYPE (tem
));
1292 /* output end of a structure,union, or enumeral definition */
1294 PUT_SDB_PLAIN_DEF ("eos");
1295 PUT_SDB_INT_VAL (size
);
1296 PUT_SDB_SCL (C_EOS
);
1297 PUT_SDB_TAG (KNOWN_TYPE_TAG (type
));
1298 PUT_SDB_SIZE (size
);
1308 /* The following two functions output definitions of function parameters.
1309 Each parameter gets a definition locating it in the parameter list.
1310 Each parameter that is a register variable gets a second definition
1311 locating it in the register.
1313 Printing or argument lists in gdb uses the definitions that
1314 locate in the parameter list. But reference to the variable in
1315 expressions uses preferentially the definition as a register. */
1317 /* Output definitions, referring to storage in the parmlist,
1318 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1321 sdbout_parms (parms
)
1324 for (; parms
; parms
= TREE_CHAIN (parms
))
1325 if (DECL_NAME (parms
))
1327 int current_sym_value
= 0;
1328 char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1330 if (name
== 0 || *name
== 0)
1331 name
= gen_fake_label ();
1333 /* Perform any necessary register eliminations on the parameter's rtl,
1334 so that the debugging output will be accurate. */
1335 DECL_INCOMING_RTL (parms
)
1336 = eliminate_regs (DECL_INCOMING_RTL (parms
), 0, NULL_RTX
);
1337 DECL_RTL (parms
) = eliminate_regs (DECL_RTL (parms
), 0, NULL_RTX
);
1339 if (PARM_PASSED_IN_MEMORY (parms
))
1341 rtx addr
= XEXP (DECL_INCOMING_RTL (parms
), 0);
1344 /* ??? Here we assume that the parm address is indexed
1345 off the frame pointer or arg pointer.
1346 If that is not true, we produce meaningless results,
1347 but do not crash. */
1348 if (GET_CODE (addr
) == PLUS
1349 && GET_CODE (XEXP (addr
, 1)) == CONST_INT
)
1350 current_sym_value
= INTVAL (XEXP (addr
, 1));
1352 current_sym_value
= 0;
1354 if (GET_CODE (DECL_RTL (parms
)) == REG
1355 && REGNO (DECL_RTL (parms
)) >= 0
1356 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1357 type
= DECL_ARG_TYPE (parms
);
1360 int original_sym_value
= current_sym_value
;
1362 /* This is the case where the parm is passed as an int or
1363 double and it is converted to a char, short or float
1364 and stored back in the parmlist. In this case, describe
1365 the parm with the variable's declared type, and adjust
1366 the address if the least significant bytes (which we are
1367 using) are not the first ones. */
1368 if (BYTES_BIG_ENDIAN
1369 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1370 current_sym_value
+=
1371 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1372 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1374 if (GET_CODE (DECL_RTL (parms
)) == MEM
1375 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1376 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1378 && (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1379 == current_sym_value
))
1380 type
= TREE_TYPE (parms
);
1383 current_sym_value
= original_sym_value
;
1384 type
= DECL_ARG_TYPE (parms
);
1389 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
, addr
));
1390 PUT_SDB_SCL (C_ARG
);
1391 PUT_SDB_TYPE (plain_type (type
));
1394 else if (GET_CODE (DECL_RTL (parms
)) == REG
)
1397 /* Parm passed in registers and lives in registers or nowhere. */
1399 /* If parm lives in a register, use that register;
1400 pretend the parm was passed there. It would be more consistent
1401 to describe the register where the parm was passed,
1402 but in practice that register usually holds something else. */
1403 if (REGNO (DECL_RTL (parms
)) >= 0
1404 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1405 best_rtl
= DECL_RTL (parms
);
1406 /* If the parm lives nowhere,
1407 use the register where it was passed. */
1409 best_rtl
= DECL_INCOMING_RTL (parms
);
1412 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl
)));
1413 PUT_SDB_SCL (C_REGPARM
);
1414 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1417 else if (GET_CODE (DECL_RTL (parms
)) == MEM
1418 && XEXP (DECL_RTL (parms
), 0) != const0_rtx
)
1420 /* Parm was passed in registers but lives on the stack. */
1422 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1423 in which case we want the value of that CONST_INT,
1424 or (MEM (REG ...)) or (MEM (MEM ...)),
1425 in which case we use a value of zero. */
1426 if (GET_CODE (XEXP (DECL_RTL (parms
), 0)) == REG
1427 || GET_CODE (XEXP (DECL_RTL (parms
), 0)) == MEM
)
1428 current_sym_value
= 0;
1430 current_sym_value
= INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1));
1432 /* Again, this assumes the offset is based on the arg pointer. */
1434 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
,
1435 XEXP (DECL_RTL (parms
), 0)));
1436 PUT_SDB_SCL (C_ARG
);
1437 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1443 /* Output definitions for the places where parms live during the function,
1444 when different from where they were passed, when the parms were passed
1447 It is not useful to do this for parms passed in registers
1448 that live during the function in different registers, because it is
1449 impossible to look in the passed register for the passed value,
1450 so we use the within-the-function register to begin with.
1452 PARMS is a chain of PARM_DECL nodes. */
1455 sdbout_reg_parms (parms
)
1458 for (; parms
; parms
= TREE_CHAIN (parms
))
1459 if (DECL_NAME (parms
))
1461 char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1463 /* Report parms that live in registers during the function
1464 but were passed in memory. */
1465 if (GET_CODE (DECL_RTL (parms
)) == REG
1466 && REGNO (DECL_RTL (parms
)) >= 0
1467 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
1468 && PARM_PASSED_IN_MEMORY (parms
))
1470 if (name
== 0 || *name
== 0)
1471 name
= gen_fake_label ();
1473 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms
))));
1474 PUT_SDB_SCL (C_REG
);
1475 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1478 /* Report parms that live in memory but not where they were passed. */
1479 else if (GET_CODE (DECL_RTL (parms
)) == MEM
1480 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1481 && GET_CODE (XEXP (XEXP (DECL_RTL (parms
), 0), 1)) == CONST_INT
1482 && PARM_PASSED_IN_MEMORY (parms
)
1483 && ! rtx_equal_p (DECL_RTL (parms
), DECL_INCOMING_RTL (parms
)))
1485 #if 0 /* ??? It is not clear yet what should replace this. */
1486 int offset
= DECL_OFFSET (parms
) / BITS_PER_UNIT
;
1487 /* A parm declared char is really passed as an int,
1488 so it occupies the least significant bytes.
1489 On a big-endian machine those are not the low-numbered ones. */
1490 if (BYTES_BIG_ENDIAN
1492 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1493 offset
+= (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1494 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1495 if (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1)) != offset
) {...}
1498 if (name
== 0 || *name
== 0)
1499 name
= gen_fake_label ();
1501 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1502 (XEXP (DECL_RTL (parms
), 0)));
1503 PUT_SDB_SCL (C_AUTO
);
1504 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1511 /* Describe the beginning of an internal block within a function.
1512 Also output descriptions of variables defined in this block.
1514 N is the number of the block, by order of beginning, counting from 1,
1515 and not counting the outermost (function top-level) block.
1516 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1517 if the count starts at 0 for the outermost one. */
1520 sdbout_begin_block (file
, line
, n
)
1525 tree decl
= current_function_decl
;
1526 MAKE_LINE_SAFE (line
);
1528 /* The SCO compiler does not emit a separate block for the function level
1529 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1530 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1531 #ifndef MIPS_DEBUGGING_INFO
1534 PUT_SDB_BLOCK_START (line
- sdb_begin_function_line
);
1538 /* Include the outermost BLOCK's variables in block 1. */
1539 next_block_number
= 0;
1541 sdbout_block (DECL_INITIAL (decl
));
1543 /* If -g1, suppress all the internal symbols of functions
1544 except for arguments. */
1545 if (debug_info_level
!= DINFO_LEVEL_TERSE
)
1547 next_block_number
= 0;
1549 sdbout_block (DECL_INITIAL (decl
));
1552 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1553 sdbout_dequeue_anonymous_types ();
1557 /* Describe the end line-number of an internal block within a function. */
1560 sdbout_end_block (file
, line
, n
)
1565 MAKE_LINE_SAFE (line
);
1567 /* The SCO compiler does not emit a separate block for the function level
1568 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1569 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1570 #ifndef MIPS_DEBUGGING_INFO
1573 PUT_SDB_BLOCK_END (line
- sdb_begin_function_line
);
1576 /* Output sdb info for the current function name.
1577 Called from assemble_start_function. */
1580 sdbout_mark_begin_function ()
1582 sdbout_symbol (current_function_decl
, 0);
1585 /* Called at beginning of function body (after prologue).
1586 Record the function's starting line number, so we can output
1587 relative line numbers for the other lines.
1588 Describe beginning of outermost block.
1589 Also describe the parameter list. */
1592 sdbout_begin_function (line
)
1595 sdb_begin_function_line
= line
- 1;
1596 PUT_SDB_FUNCTION_START (line
);
1597 sdbout_parms (DECL_ARGUMENTS (current_function_decl
));
1598 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl
));
1601 /* Called at end of function (before epilogue).
1602 Describe end of outermost block. */
1605 sdbout_end_function (line
)
1608 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1609 sdbout_dequeue_anonymous_types ();
1612 MAKE_LINE_SAFE (line
);
1613 PUT_SDB_FUNCTION_END (line
- sdb_begin_function_line
);
1615 /* Indicate we are between functions, for line-number output. */
1616 sdb_begin_function_line
= -1;
1619 /* Output sdb info for the absolute end of a function.
1620 Called after the epilogue is output. */
1623 sdbout_end_epilogue ()
1625 char *name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl
));
1626 PUT_SDB_EPILOGUE_END (name
);
1629 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1636 PUT_SDB_DEF (LABEL_NAME (insn
));
1638 PUT_SDB_SCL (C_LABEL
);
1639 PUT_SDB_TYPE (T_NULL
);
1643 /* Change to reading from a new source file. */
1646 sdbout_start_new_source_file (filename
)
1649 #ifdef MIPS_DEBUGGING_INFO
1650 struct sdb_file
*n
= (struct sdb_file
*) xmalloc (sizeof *n
);
1652 n
->next
= current_file
;
1655 PUT_SDB_SRC_FILE (filename
);
1659 /* Revert to reading a previous source file. */
1662 sdbout_resume_previous_source_file ()
1664 #ifdef MIPS_DEBUGGING_INFO
1665 struct sdb_file
*next
;
1667 next
= current_file
->next
;
1668 free (current_file
);
1669 current_file
= next
;
1670 PUT_SDB_SRC_FILE (current_file
->name
);
1674 #endif /* SDB_DEBUGGING_INFO */