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))
533 int size = int_size_in_bytes (type) * BITS_PER_UNIT;
535 /* Carefully distinguish all the standard types of C,
536 without messing up if the language is not C.
537 Note that we check only for the names that contain spaces;
538 other names might occur by coincidence in other languages. */
539 if (TYPE_NAME (type) != 0
540 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
541 && DECL_NAME (TYPE_NAME (type)) != 0
542 && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE)
544 char *name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
546 if (!strcmp (name, "char"))
548 if (!strcmp (name, "unsigned char"))
550 if (!strcmp (name, "signed char"))
552 if (!strcmp (name, "int"))
554 if (!strcmp (name, "unsigned int"))
556 if (!strcmp (name, "short int"))
558 if (!strcmp (name, "short unsigned int"))
560 if (!strcmp (name, "long int"))
562 if (!strcmp (name, "long unsigned int"))
566 if (size == INT_TYPE_SIZE)
567 return (TREE_UNSIGNED (type) ? T_UINT : T_INT);
568 if (size == CHAR_TYPE_SIZE)
569 return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
570 if (size == SHORT_TYPE_SIZE)
571 return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT);
572 if (size == LONG_TYPE_SIZE)
573 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
574 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */
575 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
581 int precision = TYPE_PRECISION (type);
582 if (precision == FLOAT_TYPE_SIZE)
584 if (precision == DOUBLE_TYPE_SIZE)
586 #ifdef EXTENDED_SDB_BASIC_TYPES
587 if (precision == LONG_DOUBLE_TYPE_SIZE)
590 if (precision == LONG_DOUBLE_TYPE_SIZE)
591 return T_DOUBLE; /* better than nothing */
602 m = plain_type_1 (TREE_TYPE (type), level+1);
603 if (sdb_n_dims < SDB_MAX_DIM)
604 sdb_dims[sdb_n_dims++]
605 = (TYPE_DOMAIN (type)
606 && TYPE_MAX_VALUE (TYPE_DOMAIN (type))
607 && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST
608 && TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST
609 ? (TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type)))
610 - TREE_INT_CST_LOW (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) + 1)
612 return PUSH_DERIVED_LEVEL (DT_ARY, m);
617 case QUAL_UNION_TYPE:
621 #ifdef SDB_ALLOW_FORWARD_REFERENCES
622 sdbout_record_type_name (type);
624 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
625 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
626 #ifdef SDB_ALLOW_FORWARD_REFERENCES
627 || TYPE_MODE (type) != VOIDmode
632 /* Output the referenced structure tag name
633 only if the .def has already been finished.
634 At least on 386, the Unix assembler
635 cannot handle forward references to tags. */
636 /* But the 88100, it requires them, sigh... */
637 /* And the MIPS requires unknown refs as well... */
638 tag = KNOWN_TYPE_TAG (type);
640 /* These 3 lines used to follow the close brace.
641 However, a size of 0 without a tag implies a tag of 0,
642 so if we don't know a tag, we can't mention the size. */
643 sdb_type_size = int_size_in_bytes (type);
644 if (sdb_type_size < 0)
647 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
648 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION
649 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION
659 m = plain_type_1 (TREE_TYPE (type), level+1);
660 return PUSH_DERIVED_LEVEL (DT_PTR, m);
669 m = plain_type_1 (TREE_TYPE (type), level+1);
670 return PUSH_DERIVED_LEVEL (DT_FCN, m);
677 /* Output the symbols defined in block number DO_BLOCK.
678 Set NEXT_BLOCK_NUMBER to 0 before calling.
680 This function works by walking the tree structure of blocks,
681 counting blocks until it finds the desired block. */
683 static int do_block = 0;
685 static int next_block_number;
693 /* Ignore blocks never expanded or otherwise marked as real. */
694 if (TREE_USED (block))
696 /* When we reach the specified block, output its symbols. */
697 if (next_block_number == do_block)
699 sdbout_syms (BLOCK_VARS (block));
702 /* If we are past the specified block, stop the scan. */
703 if (next_block_number > do_block)
708 /* Scan the blocks within this block. */
709 sdbout_block (BLOCK_SUBBLOCKS (block));
712 block = BLOCK_CHAIN (block);
716 /* Call sdbout_symbol on each decl in the chain SYMS. */
724 if (TREE_CODE (syms) != LABEL_DECL)
725 sdbout_symbol (syms, 1);
726 syms = TREE_CHAIN (syms);
730 /* Output SDB information for a symbol described by DECL.
731 LOCAL is nonzero if the symbol is not file-scope. */
734 sdbout_symbol (decl, local)
738 tree type = TREE_TYPE (decl);
739 tree context = NULL_TREE;
744 sdbout_one_type (type);
746 #if 0 /* This loses when functions are marked to be ignored,
747 which happens in the C++ front end. */
748 if (DECL_IGNORED_P (decl))
752 switch (TREE_CODE (decl))
755 /* Enum values are defined by defining the enum type. */
759 /* Don't mention a nested function under its parent. */
760 context = decl_function_context (decl);
761 if (context == current_function_decl)
763 /* Check DECL_INITIAL to distinguish declarations from definitions.
764 Don't output debug info here for declarations; they will have
765 a DECL_INITIAL value of 0. */
766 if (! DECL_INITIAL (decl))
768 if (GET_CODE (DECL_RTL (decl)) != MEM
769 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
771 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
772 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
773 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
777 /* Done with tagged types. */
778 if (DECL_NAME (decl) == 0)
780 if (DECL_IGNORED_P (decl))
783 /* Output typedef name. */
784 if (template_name_p (DECL_NAME (decl)))
785 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
787 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
788 PUT_SDB_SCL (C_TPDEF);
792 /* Parm decls go in their own separate chains
793 and are output by sdbout_reg_parms and sdbout_parms. */
797 /* Don't mention a variable that is external.
798 Let the file that defines it describe it. */
799 if (DECL_EXTERNAL (decl))
802 /* Ignore __FUNCTION__, etc. */
803 if (DECL_IGNORED_P (decl))
806 /* If there was an error in the declaration, don't dump core
807 if there is no RTL associated with the variable doesn't
809 if (DECL_RTL (decl) == 0)
812 DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX);
813 #ifdef LEAF_REG_REMAP
815 leaf_renumber_regs_insn (DECL_RTL (decl));
817 value = DECL_RTL (decl);
819 /* Don't mention a variable at all
820 if it was completely optimized into nothingness.
822 If DECL was from an inline function, then its rtl
823 is not identically the rtl that was used in this
824 particular compilation. */
825 if (GET_CODE (value) == REG)
827 regno = REGNO (DECL_RTL (decl));
828 if (regno >= FIRST_PSEUDO_REGISTER)
831 else if (GET_CODE (value) == SUBREG)
834 while (GET_CODE (value) == SUBREG)
836 offset += SUBREG_WORD (value);
837 value = SUBREG_REG (value);
839 if (GET_CODE (value) == REG)
841 regno = REGNO (value);
842 if (regno >= FIRST_PSEUDO_REGISTER)
846 alter_subreg (DECL_RTL (decl));
847 value = DECL_RTL (decl);
849 /* Don't output anything if an auto variable
850 gets RTL that is static.
851 GAS version 2.2 can't handle such output. */
852 else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0))
853 && ! TREE_STATIC (decl))
856 /* Emit any structure, union, or enum type that has not been output.
857 This occurs for tag-less structs (et al) used to declare variables
859 if (TREE_CODE (type) == ENUMERAL_TYPE
860 || TREE_CODE (type) == RECORD_TYPE
861 || TREE_CODE (type) == UNION_TYPE
862 || TREE_CODE (type) == QUAL_UNION_TYPE)
864 if (TYPE_SIZE (type) != 0 /* not a forward reference */
865 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
866 sdbout_one_type (type);
869 /* Defer SDB information for top-level initialized variables! */
871 && GET_CODE (value) == MEM
872 && DECL_INITIAL (decl))
875 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
876 For now, avoid crashing. */
877 if (DECL_NAME (decl) == NULL_TREE)
880 /* Record the name for, starting a symtab entry. */
881 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
883 if (GET_CODE (value) == MEM
884 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
887 if (TREE_PUBLIC (decl))
889 PUT_SDB_VAL (XEXP (value, 0));
894 PUT_SDB_VAL (XEXP (value, 0));
895 PUT_SDB_SCL (C_STAT);
901 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
904 else if (GET_CODE (value) == MEM
905 && (GET_CODE (XEXP (value, 0)) == MEM
906 || (GET_CODE (XEXP (value, 0)) == REG
907 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM
908 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
909 /* If the value is indirect by memory or by a register
910 that isn't the frame pointer
911 then it means the object is variable-sized and address through
912 that register or stack slot. COFF has no way to represent this
913 so all we can do is output the variable as a pointer. */
916 if (GET_CODE (XEXP (value, 0)) == REG)
918 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
923 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
925 We want the value of that CONST_INT. */
926 /* Encore compiler hates a newline in a macro arg, it seems. */
927 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
928 (XEXP (XEXP (value, 0), 0)));
929 PUT_SDB_SCL (C_AUTO);
932 type = build_pointer_type (TREE_TYPE (decl));
934 else if (GET_CODE (value) == MEM
935 && ((GET_CODE (XEXP (value, 0)) == PLUS
936 && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG
937 && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT)
938 /* This is for variables which are at offset zero from
939 the frame pointer. This happens on the Alpha.
940 Non-frame pointer registers are excluded above. */
941 || (GET_CODE (XEXP (value, 0)) == REG)))
943 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
944 or (MEM (REG...)). We want the value of that CONST_INT
947 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
948 PUT_SDB_SCL (C_AUTO);
950 else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST)
952 /* Handle an obscure case which can arise when optimizing and
953 when there are few available registers. (This is *always*
954 the case for i386/i486 targets). The DECL_RTL looks like
955 (MEM (CONST ...)) even though this variable is a local `auto'
956 or a local `register' variable. In effect, what has happened
957 is that the reload pass has seen that all assignments and
958 references for one such a local variable can be replaced by
959 equivalent assignments and references to some static storage
960 variable, thereby avoiding the need for a register. In such
961 cases we're forced to lie to debuggers and tell them that
962 this variable was itself `static'. */
964 PUT_SDB_VAL (XEXP (XEXP (value, 0), 0));
965 PUT_SDB_SCL (C_STAT);
969 /* It is something we don't know how to represent for SDB. */
977 PUT_SDB_TYPE (plain_type (type));
981 /* Output SDB information for a top-level initialized variable
982 that has been delayed. */
985 sdbout_toplevel_data (decl)
988 tree type = TREE_TYPE (decl);
990 if (DECL_IGNORED_P (decl))
993 if (! (TREE_CODE (decl) == VAR_DECL
994 && GET_CODE (DECL_RTL (decl)) == MEM
995 && DECL_INITIAL (decl)))
998 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
999 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
1000 if (TREE_PUBLIC (decl))
1002 PUT_SDB_SCL (C_EXT);
1006 PUT_SDB_SCL (C_STAT);
1008 PUT_SDB_TYPE (plain_type (type));
1012 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1014 /* Machinery to record and output anonymous types. */
1016 static tree anonymous_types;
1019 sdbout_queue_anonymous_type (type)
1022 anonymous_types = saveable_tree_cons (NULL_TREE, type, anonymous_types);
1026 sdbout_dequeue_anonymous_types ()
1028 register tree types, link;
1030 while (anonymous_types)
1032 types = nreverse (anonymous_types);
1033 anonymous_types = NULL_TREE;
1035 for (link = types; link; link = TREE_CHAIN (link))
1037 register tree type = TREE_VALUE (link);
1039 if (type && ! TREE_ASM_WRITTEN (type))
1040 sdbout_one_type (type);
1047 /* Given a chain of ..._TYPE nodes, all of which have names,
1048 output definitions of those names, as typedefs. */
1051 sdbout_types (types)
1052 register tree types;
1056 for (link = types; link; link = TREE_CHAIN (link))
1057 sdbout_one_type (link);
1059 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1060 sdbout_dequeue_anonymous_types ();
1068 if (type == error_mark_node)
1069 type = integer_type_node;
1070 PUT_SDB_TYPE (plain_type (type));
1073 /* Output types of the fields of type TYPE, if they are structs.
1075 Formerly did not chase through pointer types, since that could be circular.
1076 They must come before TYPE, since forward refs are not allowed.
1077 Now james@bigtex.cactus.org says to try them. */
1080 sdbout_field_types (type)
1085 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
1086 /* This condition should match the one for emitting the actual members
1088 if (TREE_CODE (tail) == FIELD_DECL
1089 && DECL_NAME (tail) != 0
1090 && TREE_CODE (DECL_SIZE (tail)) == INTEGER_CST
1091 && TREE_CODE (DECL_FIELD_BITPOS (tail)) == INTEGER_CST)
1093 if (POINTER_TYPE_P (TREE_TYPE (tail)))
1094 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
1096 sdbout_one_type (TREE_TYPE (tail));
1100 /* Use this to put out the top level defined record and union types
1101 for later reference. If this is a struct with a name, then put that
1102 name out. Other unnamed structs will have .xxfake labels generated so
1103 that they may be referred to later.
1104 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1105 It may NOT be called recursively. */
1108 sdbout_one_type (type)
1111 if (current_function_decl != NULL_TREE
1112 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE)
1113 ; /* Don't change section amid function. */
1117 switch (TREE_CODE (type))
1121 case QUAL_UNION_TYPE:
1123 type = TYPE_MAIN_VARIANT (type);
1124 /* Don't output a type twice. */
1125 if (TREE_ASM_WRITTEN (type))
1126 /* James said test TREE_ASM_BEING_WRITTEN here. */
1129 /* Output nothing if type is not yet defined. */
1130 if (TYPE_SIZE (type) == 0)
1133 TREE_ASM_WRITTEN (type) = 1;
1135 /* This is reputed to cause trouble with the following case,
1136 but perhaps checking TYPE_SIZE above will fix it. */
1138 /* Here is a test case:
1144 typedef struct intermediate {
1148 typedef struct badstr {
1153 TREE_ASM_BEING_WRITTEN (type) = 1;
1155 /* This change, which ought to make better output,
1156 used to make the COFF assembler unhappy.
1157 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1158 /* Before really doing anything, output types we want to refer to. */
1159 /* Note that in version 1 the following two lines
1160 are not used if forward references are in use. */
1161 if (TREE_CODE (type) != ENUMERAL_TYPE)
1162 sdbout_field_types (type);
1164 TREE_ASM_WRITTEN (type) = 1;
1168 /* Output a structure type. */
1170 int size = int_size_in_bytes (type);
1173 int i, n_baseclasses = 0;
1175 /* Record the type tag, but not in its permanent place just yet. */
1176 sdbout_record_type_name (type);
1178 PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
1180 switch (TREE_CODE (type))
1183 case QUAL_UNION_TYPE:
1184 PUT_SDB_SCL (C_UNTAG);
1185 PUT_SDB_TYPE (T_UNION);
1190 PUT_SDB_SCL (C_STRTAG);
1191 PUT_SDB_TYPE (T_STRUCT);
1196 PUT_SDB_SCL (C_ENTAG);
1197 PUT_SDB_TYPE (T_ENUM);
1205 PUT_SDB_SIZE (size);
1208 /* Print out the base class information with fields
1209 named after the types they hold. */
1210 /* This is only relevent to aggregate types. TYPE_BINFO is used
1211 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1213 if (TREE_CODE (type) != ENUMERAL_TYPE)
1215 if (TYPE_BINFO (type)
1216 && TYPE_BINFO_BASETYPES (type))
1217 n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
1218 for (i = 0; i < n_baseclasses; i++)
1220 tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)),
1222 tree child_type = BINFO_TYPE (child);
1223 tree child_type_name;
1224 if (TYPE_NAME (child_type) == 0)
1226 if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE)
1227 child_type_name = TYPE_NAME (child_type);
1228 else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL)
1230 child_type_name = DECL_NAME (TYPE_NAME (child_type));
1231 if (child_type_name && template_name_p (child_type_name))
1233 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type));
1239 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name));
1240 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (BINFO_OFFSET (child)));
1241 PUT_SDB_SCL (member_scl);
1242 sdbout_type (BINFO_TYPE (child));
1247 /* output the individual fields */
1249 if (TREE_CODE (type) == ENUMERAL_TYPE)
1250 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1252 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
1253 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (TREE_VALUE (tem)));
1254 PUT_SDB_SCL (C_MOE);
1255 PUT_SDB_TYPE (T_MOE);
1259 else /* record or union type */
1260 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1261 /* Output the name, type, position (in bits), size (in bits)
1264 /* Omit here the nameless fields that are used to skip bits.
1265 Also omit fields with variable size or position.
1266 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1267 if (TREE_CODE (tem) == FIELD_DECL
1268 && DECL_NAME (tem) != 0
1269 && TREE_CODE (DECL_SIZE (tem)) == INTEGER_CST
1270 && TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST)
1275 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem));
1277 if (DECL_BIT_FIELD_TYPE (tem))
1279 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)));
1280 PUT_SDB_SCL (C_FIELD);
1281 sdbout_type (DECL_BIT_FIELD_TYPE (tem));
1282 PUT_SDB_SIZE (TREE_INT_CST_LOW (DECL_SIZE (tem)));
1286 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))
1288 PUT_SDB_SCL (member_scl);
1289 sdbout_type (TREE_TYPE (tem));
1293 /* output end of a structure,union, or enumeral definition */
1295 PUT_SDB_PLAIN_DEF ("eos");
1296 PUT_SDB_INT_VAL (size);
1297 PUT_SDB_SCL (C_EOS);
1298 PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
1299 PUT_SDB_SIZE (size);
1309 /* The following two functions output definitions of function parameters.
1310 Each parameter gets a definition locating it in the parameter list.
1311 Each parameter that is a register variable gets a second definition
1312 locating it in the register.
1314 Printing or argument lists in gdb uses the definitions that
1315 locate in the parameter list. But reference to the variable in
1316 expressions uses preferentially the definition as a register. */
1318 /* Output definitions, referring to storage in the parmlist,
1319 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1322 sdbout_parms (parms)
1325 for (; parms; parms = TREE_CHAIN (parms))
1326 if (DECL_NAME (parms))
1328 int current_sym_value = 0;
1329 char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1331 if (name == 0 || *name == 0)
1332 name = gen_fake_label ();
1334 /* Perform any necessary register eliminations on the parameter's rtl,
1335 so that the debugging output will be accurate. */
1336 DECL_INCOMING_RTL (parms)
1337 = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
1338 DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX);
1340 if (PARM_PASSED_IN_MEMORY (parms))
1342 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1345 /* ??? Here we assume that the parm address is indexed
1346 off the frame pointer or arg pointer.
1347 If that is not true, we produce meaningless results,
1348 but do not crash. */
1349 if (GET_CODE (addr) == PLUS
1350 && GET_CODE (XEXP (addr, 1)) == CONST_INT)
1351 current_sym_value = INTVAL (XEXP (addr, 1));
1353 current_sym_value = 0;
1355 if (GET_CODE (DECL_RTL (parms)) == REG
1356 && REGNO (DECL_RTL (parms)) >= 0
1357 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1358 type = DECL_ARG_TYPE (parms);
1361 int original_sym_value = current_sym_value;
1363 /* This is the case where the parm is passed as an int or
1364 double and it is converted to a char, short or float
1365 and stored back in the parmlist. In this case, describe
1366 the parm with the variable's declared type, and adjust
1367 the address if the least significant bytes (which we are
1368 using) are not the first ones. */
1369 if (BYTES_BIG_ENDIAN
1370 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1371 current_sym_value +=
1372 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1373 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1375 if (GET_CODE (DECL_RTL (parms)) == MEM
1376 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1377 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1379 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1380 == current_sym_value))
1381 type = TREE_TYPE (parms);
1384 current_sym_value = original_sym_value;
1385 type = DECL_ARG_TYPE (parms);
1390 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
1391 PUT_SDB_SCL (C_ARG);
1392 PUT_SDB_TYPE (plain_type (type));
1395 else if (GET_CODE (DECL_RTL (parms)) == REG)
1398 /* Parm passed in registers and lives in registers or nowhere. */
1400 /* If parm lives in a register, use that register;
1401 pretend the parm was passed there. It would be more consistent
1402 to describe the register where the parm was passed,
1403 but in practice that register usually holds something else. */
1404 if (REGNO (DECL_RTL (parms)) >= 0
1405 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1406 best_rtl = DECL_RTL (parms);
1407 /* If the parm lives nowhere,
1408 use the register where it was passed. */
1410 best_rtl = DECL_INCOMING_RTL (parms);
1413 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl)));
1414 PUT_SDB_SCL (C_REGPARM);
1415 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1418 else if (GET_CODE (DECL_RTL (parms)) == MEM
1419 && XEXP (DECL_RTL (parms), 0) != const0_rtx)
1421 /* Parm was passed in registers but lives on the stack. */
1423 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1424 in which case we want the value of that CONST_INT,
1425 or (MEM (REG ...)) or (MEM (MEM ...)),
1426 in which case we use a value of zero. */
1427 if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
1428 || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
1429 current_sym_value = 0;
1431 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
1433 /* Again, this assumes the offset is based on the arg pointer. */
1435 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value,
1436 XEXP (DECL_RTL (parms), 0)));
1437 PUT_SDB_SCL (C_ARG);
1438 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1444 /* Output definitions for the places where parms live during the function,
1445 when different from where they were passed, when the parms were passed
1448 It is not useful to do this for parms passed in registers
1449 that live during the function in different registers, because it is
1450 impossible to look in the passed register for the passed value,
1451 so we use the within-the-function register to begin with.
1453 PARMS is a chain of PARM_DECL nodes. */
1456 sdbout_reg_parms (parms)
1459 for (; parms; parms = TREE_CHAIN (parms))
1460 if (DECL_NAME (parms))
1462 char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1464 /* Report parms that live in registers during the function
1465 but were passed in memory. */
1466 if (GET_CODE (DECL_RTL (parms)) == REG
1467 && REGNO (DECL_RTL (parms)) >= 0
1468 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
1469 && PARM_PASSED_IN_MEMORY (parms))
1471 if (name == 0 || *name == 0)
1472 name = gen_fake_label ();
1474 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
1475 PUT_SDB_SCL (C_REG);
1476 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1479 /* Report parms that live in memory but not where they were passed. */
1480 else if (GET_CODE (DECL_RTL (parms)) == MEM
1481 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1482 && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
1483 && PARM_PASSED_IN_MEMORY (parms)
1484 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
1486 #if 0 /* ??? It is not clear yet what should replace this. */
1487 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
1488 /* A parm declared char is really passed as an int,
1489 so it occupies the least significant bytes.
1490 On a big-endian machine those are not the low-numbered ones. */
1491 if (BYTES_BIG_ENDIAN
1493 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1494 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1495 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1496 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
1499 if (name == 0 || *name == 0)
1500 name = gen_fake_label ();
1502 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1503 (XEXP (DECL_RTL (parms), 0)));
1504 PUT_SDB_SCL (C_AUTO);
1505 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1512 /* Describe the beginning of an internal block within a function.
1513 Also output descriptions of variables defined in this block.
1515 N is the number of the block, by order of beginning, counting from 1,
1516 and not counting the outermost (function top-level) block.
1517 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1518 if the count starts at 0 for the outermost one. */
1521 sdbout_begin_block (file, line, n)
1526 tree decl = current_function_decl;
1527 MAKE_LINE_SAFE (line);
1529 /* The SCO compiler does not emit a separate block for the function level
1530 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1531 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1532 #ifndef MIPS_DEBUGGING_INFO
1535 PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
1539 /* Include the outermost BLOCK's variables in block 1. */
1540 next_block_number = 0;
1542 sdbout_block (DECL_INITIAL (decl));
1544 /* If -g1, suppress all the internal symbols of functions
1545 except for arguments. */
1546 if (debug_info_level != DINFO_LEVEL_TERSE)
1548 next_block_number = 0;
1550 sdbout_block (DECL_INITIAL (decl));
1553 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1554 sdbout_dequeue_anonymous_types ();
1558 /* Describe the end line-number of an internal block within a function. */
1561 sdbout_end_block (file, line, n)
1566 MAKE_LINE_SAFE (line);
1568 /* The SCO compiler does not emit a separate block for the function level
1569 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1570 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1571 #ifndef MIPS_DEBUGGING_INFO
1574 PUT_SDB_BLOCK_END (line - sdb_begin_function_line);
1577 /* Output sdb info for the current function name.
1578 Called from assemble_start_function. */
1581 sdbout_mark_begin_function ()
1583 sdbout_symbol (current_function_decl, 0);
1586 /* Called at beginning of function body (after prologue).
1587 Record the function's starting line number, so we can output
1588 relative line numbers for the other lines.
1589 Describe beginning of outermost block.
1590 Also describe the parameter list. */
1593 sdbout_begin_function (line)
1596 sdb_begin_function_line = line - 1;
1597 PUT_SDB_FUNCTION_START (line);
1598 sdbout_parms (DECL_ARGUMENTS (current_function_decl));
1599 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
1602 /* Called at end of function (before epilogue).
1603 Describe end of outermost block. */
1606 sdbout_end_function (line)
1609 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1610 sdbout_dequeue_anonymous_types ();
1613 MAKE_LINE_SAFE (line);
1614 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
1616 /* Indicate we are between functions, for line-number output. */
1617 sdb_begin_function_line = -1;
1620 /* Output sdb info for the absolute end of a function.
1621 Called after the epilogue is output. */
1624 sdbout_end_epilogue ()
1626 char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
1627 PUT_SDB_EPILOGUE_END (name);
1630 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1637 PUT_SDB_DEF (LABEL_NAME (insn));
1639 PUT_SDB_SCL (C_LABEL);
1640 PUT_SDB_TYPE (T_NULL);
1644 /* Change to reading from a new source file. */
1647 sdbout_start_new_source_file (filename)
1650 #ifdef MIPS_DEBUGGING_INFO
1651 struct sdb_file *n = (struct sdb_file *) xmalloc (sizeof *n);
1653 n->next = current_file;
1656 PUT_SDB_SRC_FILE (filename);
1660 /* Revert to reading a previous source file. */
1663 sdbout_resume_previous_source_file ()
1665 #ifdef MIPS_DEBUGGING_INFO
1666 struct sdb_file *next;
1668 next = current_file->next;
1669 free (current_file);
1670 current_file = next;
1671 PUT_SDB_SRC_FILE (current_file->name);
1675 #endif /* SDB_DEBUGGING_INFO */