1 /* Output sdb-format symbol table information from GNU compiler.
2 Copyright (C) 1988, 92, 93, 94, 95, 96, 1997 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"
56 /* Mips systems use the SDB functions to dump out symbols, but do not
57 supply usable syms.h include files. Which syms.h file to use is a
58 target parameter so don't use the native one if we're cross compiling. */
60 #if defined(USG) && !defined(MIPS) && !defined (hpux) && !defined(_WIN32) && !defined(__linux__) && !defined(CROSS_COMPILE)
62 /* Use T_INT if we don't have T_VOID. */
70 /* #include <storclass.h> used to be this instead of syms.h. */
72 /* 1 if PARM is passed to this function in memory. */
74 #define PARM_PASSED_IN_MEMORY(PARM) \
75 (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
77 /* A C expression for the integer offset value of an automatic variable
78 (C_AUTO) having address X (an RTX). */
79 #ifndef DEBUGGER_AUTO_OFFSET
80 #define DEBUGGER_AUTO_OFFSET(X) \
81 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
84 /* A C expression for the integer offset value of an argument (C_ARG)
85 having address X (an RTX). The nominal offset is OFFSET. */
86 #ifndef DEBUGGER_ARG_OFFSET
87 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
90 /* Line number of beginning of current function, minus one.
91 Negative means not in a function or not using sdb. */
93 int sdb_begin_function_line = -1;
95 /* Counter to generate unique "names" for nameless struct members. */
97 static int unnamed_struct_number = 0;
99 extern FILE *asm_out_file;
101 extern tree current_function_decl;
104 void sdbout_symbol ();
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 sbdout_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) fprintf (asm_out_file, "\t.val\t%d%s", (a), SDB_DELIM)
180 #define PUT_SDB_VAL(a) \
181 ( fputs ("\t.val\t", asm_out_file), \
182 output_addr_const (asm_out_file, (a)), \
183 fprintf (asm_out_file, SDB_DELIM))
187 #define PUT_SDB_DEF(a) \
188 do { fprintf (asm_out_file, "\t.def\t"); \
189 ASM_OUTPUT_LABELREF (asm_out_file, a); \
190 fprintf (asm_out_file, SDB_DELIM); } while (0)
193 #ifndef PUT_SDB_PLAIN_DEF
194 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
197 #ifndef PUT_SDB_ENDEF
198 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
202 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
206 #define PUT_SDB_SIZE(a) fprintf(asm_out_file, "\t.size\t%d%s", a, SDB_DELIM)
209 #ifndef PUT_SDB_START_DIM
210 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
213 #ifndef PUT_SDB_NEXT_DIM
214 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
217 #ifndef PUT_SDB_LAST_DIM
218 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
222 #define PUT_SDB_TAG(a) \
223 do { fprintf (asm_out_file, "\t.tag\t"); \
224 ASM_OUTPUT_LABELREF (asm_out_file, a); \
225 fprintf (asm_out_file, SDB_DELIM); } while (0)
228 #ifndef PUT_SDB_BLOCK_START
229 #define PUT_SDB_BLOCK_START(LINE) \
230 fprintf (asm_out_file, \
231 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
232 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
235 #ifndef PUT_SDB_BLOCK_END
236 #define PUT_SDB_BLOCK_END(LINE) \
237 fprintf (asm_out_file, \
238 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
239 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
242 #ifndef PUT_SDB_FUNCTION_START
243 #define PUT_SDB_FUNCTION_START(LINE) \
244 fprintf (asm_out_file, \
245 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
246 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
249 #ifndef PUT_SDB_FUNCTION_END
250 #define PUT_SDB_FUNCTION_END(LINE) \
251 fprintf (asm_out_file, \
252 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
253 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
256 #ifndef PUT_SDB_EPILOGUE_END
257 #define PUT_SDB_EPILOGUE_END(NAME) \
258 do { fprintf (asm_out_file, "\t.def\t"); \
259 ASM_OUTPUT_LABELREF (asm_out_file, NAME); \
260 fprintf (asm_out_file, \
261 "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", \
262 SDB_DELIM, SDB_DELIM, SDB_DELIM); } while (0)
265 #ifndef SDB_GENERATE_FAKE
266 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
267 sprintf ((BUFFER), ".%dfake", (NUMBER));
270 /* Return the sdb tag identifier string for TYPE
271 if TYPE has already been defined; otherwise return a null pointer. */
273 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
275 /* Set the sdb tag identifier string for TYPE to NAME. */
277 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
278 TYPE_SYMTAB_POINTER (TYPE) = (NAME)
280 /* Return the name (a string) of the struct, union or enum tag
281 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
283 #define TAG_NAME(link) \
284 (((link) && TREE_PURPOSE ((link)) \
285 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
286 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
288 /* Ensure we don't output a negative line number. */
289 #define MAKE_LINE_SAFE(line) \
290 if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1
292 /* Perform linker optimization of merging header file definitions together
293 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a
294 post 960826 version of GAS. Nothing breaks with earlier versions of GAS,
295 the optimization just won't be done. The native assembler already has the
296 necessary support. */
298 #ifdef MIPS_DEBUGGING_INFO
300 #ifndef PUT_SDB_SRC_FILE
301 #define PUT_SDB_SRC_FILE(FILENAME) \
302 output_file_directive (asm_out_file, (FILENAME))
305 /* ECOFF linkers have an optimization that does the same kind of thing as
306 N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the
307 executable. To achieve this, GCC must output a .file for each file
310 /* This is a stack of input files. */
314 struct sdb_file *next;
318 /* This is the top of the stack. */
320 static struct sdb_file *current_file;
322 #endif /* MIPS_DEBUGGING_INFO */
324 /* Set up for SDB output at the start of compilation. */
327 sdbout_init (asm_file, input_file_name, syms)
329 char *input_file_name;
332 #ifdef MIPS_DEBUGGING_INFO
333 current_file = (struct sdb_file *) xmalloc (sizeof *current_file);
334 current_file->next = NULL;
335 current_file->name = input_file_name;
338 #ifdef RMS_QUICK_HACK_1
340 for (t = syms; t; t = TREE_CHAIN (t))
341 if (DECL_NAME (t) && IDENTIFIER_POINTER (DECL_NAME (t)) != 0
342 && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t)), "__vtbl_ptr_type"))
343 sdbout_symbol (t, 0);
349 /* return the tag identifier for type
353 tag_of_ru_type (type,link)
356 if (TYPE_SYMTAB_ADDRESS (type))
357 return TYPE_SYMTAB_ADDRESS (type);
358 if (link && TREE_PURPOSE (link)
359 && IDENTIFIER_POINTER (TREE_PURPOSE (link)))
360 TYPE_SYMTAB_ADDRESS (type) = IDENTIFIER_POINTER (TREE_PURPOSE (link));
362 return (char *) TYPE_SYMTAB_ADDRESS (type);
366 /* Return a unique string to name an anonymous type. */
373 SDB_GENERATE_FAKE (label, unnamed_struct_number);
374 unnamed_struct_number++;
375 labelstr = (char *) permalloc (strlen (label) + 1);
376 strcpy (labelstr, label);
380 /* Return the number which describes TYPE for SDB.
381 For pointers, etc., this function is recursive.
382 Each record, union or enumeral type must already have had a
383 tag number output. */
385 /* The number is given by d6d5d4d3d2d1bbbb
386 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
387 Thus, char *foo () has bbbb=T_CHAR
390 N_BTMASK= 017 1111 basic type field.
391 N_TSHIFT= 2 derived type shift
392 N_BTSHFT= 4 Basic type shift */
394 /* Produce the number that describes a pointer, function or array type.
395 PREV is the number describing the target, value or element type.
396 DT_type describes how to transform that type. */
397 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
398 ((((PREV) & ~(int)N_BTMASK) << (int)N_TSHIFT) \
399 | ((int)DT_type << (int)N_BTSHFT) \
400 | ((PREV) & (int)N_BTMASK))
402 /* Number of elements used in sdb_dims. */
403 static int sdb_n_dims = 0;
405 /* Table of array dimensions of current type. */
406 static int sdb_dims[SDB_MAX_DIM];
408 /* Size of outermost array currently being processed. */
409 static int sdb_type_size = -1;
415 int val = plain_type_1 (type, 0);
417 /* If we have already saved up some array dimensions, print them now. */
422 for (i = sdb_n_dims - 1; i > 0; i--)
423 PUT_SDB_NEXT_DIM (sdb_dims[i]);
424 PUT_SDB_LAST_DIM (sdb_dims[0]);
427 sdb_type_size = int_size_in_bytes (type);
428 /* Don't kill sdb if type is not laid out or has variable size. */
429 if (sdb_type_size < 0)
432 /* If we have computed the size of an array containing this type,
434 if (sdb_type_size >= 0)
436 PUT_SDB_SIZE (sdb_type_size);
443 template_name_p (name)
446 register char *ptr = IDENTIFIER_POINTER (name);
447 while (*ptr && *ptr != '<')
454 sdbout_record_type_name (type)
460 if (KNOWN_TYPE_TAG (type))
463 if (TYPE_NAME (type) != 0)
466 /* Find the IDENTIFIER_NODE for the type name. */
467 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
468 t = TYPE_NAME (type);
469 else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
471 t = DECL_NAME (TYPE_NAME (type));
472 /* The DECL_NAME for templates includes "<>", which breaks
473 most assemblers. Use its assembler name instead, which
474 has been mangled into being safe. */
475 if (t && template_name_p (t))
476 t = DECL_ASSEMBLER_NAME (TYPE_NAME (type));
479 /* Now get the name as a string, or invent one. */
481 name = IDENTIFIER_POINTER (t);
484 no_name = (name == 0 || *name == 0);
486 name = gen_fake_label ();
488 SET_KNOWN_TYPE_TAG (type, name);
489 #ifdef SDB_ALLOW_FORWARD_REFERENCES
491 sdbout_queue_anonymous_type (type);
495 /* Return the .type value for type TYPE.
497 LEVEL indicates how many levels deep we have recursed into the type.
498 The SDB debug format can only represent 6 derived levels of types.
499 After that, we must output inaccurate debug info. We deliberately
500 stop before the 7th level, so that ADA recursive types will not give an
504 plain_type_1 (type, level)
509 type = void_type_node;
510 else if (type == error_mark_node)
511 type = integer_type_node;
513 type = TYPE_MAIN_VARIANT (type);
515 switch (TREE_CODE (type))
521 int size = int_size_in_bytes (type) * BITS_PER_UNIT;
523 /* Carefully distinguish all the standard types of C,
524 without messing up if the language is not C.
525 Note that we check only for the names that contain spaces;
526 other names might occur by coincidence in other languages. */
527 if (TYPE_NAME (type) != 0
528 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
529 && DECL_NAME (TYPE_NAME (type)) != 0
530 && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE)
532 char *name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
534 if (!strcmp (name, "unsigned char"))
536 if (!strcmp (name, "signed char"))
538 if (!strcmp (name, "unsigned int"))
540 if (!strcmp (name, "short int"))
542 if (!strcmp (name, "short unsigned int"))
544 if (!strcmp (name, "long int"))
546 if (!strcmp (name, "long unsigned int"))
550 if (size == CHAR_TYPE_SIZE)
551 return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
552 if (size == SHORT_TYPE_SIZE)
553 return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT);
554 if (size == INT_TYPE_SIZE)
555 return (TREE_UNSIGNED (type) ? T_UINT : T_INT);
556 if (size == LONG_TYPE_SIZE)
557 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
558 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */
559 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
565 int precision = TYPE_PRECISION (type);
566 if (precision == FLOAT_TYPE_SIZE)
568 if (precision == DOUBLE_TYPE_SIZE)
570 #ifdef EXTENDED_SDB_BASIC_TYPES
571 if (precision == LONG_DOUBLE_TYPE_SIZE)
583 m = plain_type_1 (TREE_TYPE (type), level+1);
584 if (sdb_n_dims < SDB_MAX_DIM)
585 sdb_dims[sdb_n_dims++]
586 = (TYPE_DOMAIN (type)
587 && TYPE_MAX_VALUE (TYPE_DOMAIN (type))
588 && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST
589 && TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST
590 ? (TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type)))
591 - TREE_INT_CST_LOW (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) + 1)
593 return PUSH_DERIVED_LEVEL (DT_ARY, m);
598 case QUAL_UNION_TYPE:
602 #ifdef SDB_ALLOW_FORWARD_REFERENCES
603 sdbout_record_type_name (type);
605 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
606 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
607 #ifdef SDB_ALLOW_FORWARD_REFERENCES
608 || TYPE_MODE (type) != VOIDmode
613 /* Output the referenced structure tag name
614 only if the .def has already been finished.
615 At least on 386, the Unix assembler
616 cannot handle forward references to tags. */
617 /* But the 88100, it requires them, sigh... */
618 /* And the MIPS requires unknown refs as well... */
619 tag = KNOWN_TYPE_TAG (type);
621 /* These 3 lines used to follow the close brace.
622 However, a size of 0 without a tag implies a tag of 0,
623 so if we don't know a tag, we can't mention the size. */
624 sdb_type_size = int_size_in_bytes (type);
625 if (sdb_type_size < 0)
628 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
629 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION
630 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION
640 m = plain_type_1 (TREE_TYPE (type), level+1);
641 return PUSH_DERIVED_LEVEL (DT_PTR, m);
650 m = plain_type_1 (TREE_TYPE (type), level+1);
651 return PUSH_DERIVED_LEVEL (DT_FCN, m);
658 /* Output the symbols defined in block number DO_BLOCK.
659 Set NEXT_BLOCK_NUMBER to 0 before calling.
661 This function works by walking the tree structure of blocks,
662 counting blocks until it finds the desired block. */
664 static int do_block = 0;
666 static int next_block_number;
674 /* Ignore blocks never expanded or otherwise marked as real. */
675 if (TREE_USED (block))
677 /* When we reach the specified block, output its symbols. */
678 if (next_block_number == do_block)
680 sdbout_syms (BLOCK_VARS (block));
683 /* If we are past the specified block, stop the scan. */
684 if (next_block_number > do_block)
689 /* Scan the blocks within this block. */
690 sdbout_block (BLOCK_SUBBLOCKS (block));
693 block = BLOCK_CHAIN (block);
697 /* Call sdbout_symbol on each decl in the chain SYMS. */
705 if (TREE_CODE (syms) != LABEL_DECL)
706 sdbout_symbol (syms, 1);
707 syms = TREE_CHAIN (syms);
711 /* Output SDB information for a symbol described by DECL.
712 LOCAL is nonzero if the symbol is not file-scope. */
715 sdbout_symbol (decl, local)
719 tree type = TREE_TYPE (decl);
720 tree context = NULL_TREE;
725 sdbout_one_type (type);
727 #if 0 /* This loses when functions are marked to be ignored,
728 which happens in the C++ front end. */
729 if (DECL_IGNORED_P (decl))
733 switch (TREE_CODE (decl))
736 /* Enum values are defined by defining the enum type. */
740 /* Don't mention a nested function under its parent. */
741 context = decl_function_context (decl);
742 if (context == current_function_decl)
744 /* Check DECL_INITIAL to distinguish declarations from definitions.
745 Don't output debug info here for declarations; they will have
746 a DECL_INITIAL value of 0. */
747 if (! DECL_INITIAL (decl))
749 if (GET_CODE (DECL_RTL (decl)) != MEM
750 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
752 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
753 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
754 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
758 /* Done with tagged types. */
759 if (DECL_NAME (decl) == 0)
761 if (DECL_IGNORED_P (decl))
764 /* Output typedef name. */
765 if (template_name_p (DECL_NAME (decl)))
766 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
768 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
769 PUT_SDB_SCL (C_TPDEF);
773 /* Parm decls go in their own separate chains
774 and are output by sdbout_reg_parms and sdbout_parms. */
778 /* Don't mention a variable that is external.
779 Let the file that defines it describe it. */
780 if (DECL_EXTERNAL (decl))
783 /* Ignore __FUNCTION__, etc. */
784 if (DECL_IGNORED_P (decl))
787 /* If there was an error in the declaration, don't dump core
788 if there is no RTL associated with the variable doesn't
790 if (DECL_RTL (decl) == 0)
793 DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX);
794 #ifdef LEAF_REG_REMAP
796 leaf_renumber_regs_insn (DECL_RTL (decl));
798 value = DECL_RTL (decl);
800 /* Don't mention a variable at all
801 if it was completely optimized into nothingness.
803 If DECL was from an inline function, then its rtl
804 is not identically the rtl that was used in this
805 particular compilation. */
806 if (GET_CODE (value) == REG)
808 regno = REGNO (DECL_RTL (decl));
809 if (regno >= FIRST_PSEUDO_REGISTER)
812 else if (GET_CODE (value) == SUBREG)
815 while (GET_CODE (value) == SUBREG)
817 offset += SUBREG_WORD (value);
818 value = SUBREG_REG (value);
820 if (GET_CODE (value) == REG)
822 regno = REGNO (value);
823 if (regno >= FIRST_PSEUDO_REGISTER)
827 alter_subreg (DECL_RTL (decl));
828 value = DECL_RTL (decl);
830 /* Don't output anything if an auto variable
831 gets RTL that is static.
832 GAS version 2.2 can't handle such output. */
833 else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0))
834 && ! TREE_STATIC (decl))
837 /* Emit any structure, union, or enum type that has not been output.
838 This occurs for tag-less structs (et al) used to declare variables
840 if (TREE_CODE (type) == ENUMERAL_TYPE
841 || TREE_CODE (type) == RECORD_TYPE
842 || TREE_CODE (type) == UNION_TYPE
843 || TREE_CODE (type) == QUAL_UNION_TYPE)
845 if (TYPE_SIZE (type) != 0 /* not a forward reference */
846 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
847 sdbout_one_type (type);
850 /* Defer SDB information for top-level initialized variables! */
852 && GET_CODE (value) == MEM
853 && DECL_INITIAL (decl))
856 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
857 For now, avoid crashing. */
858 if (DECL_NAME (decl) == NULL_TREE)
861 /* Record the name for, starting a symtab entry. */
862 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
864 if (GET_CODE (value) == MEM
865 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
868 if (TREE_PUBLIC (decl))
870 PUT_SDB_VAL (XEXP (value, 0));
875 PUT_SDB_VAL (XEXP (value, 0));
876 PUT_SDB_SCL (C_STAT);
882 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
885 else if (GET_CODE (value) == MEM
886 && (GET_CODE (XEXP (value, 0)) == MEM
887 || (GET_CODE (XEXP (value, 0)) == REG
888 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM
889 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
890 /* If the value is indirect by memory or by a register
891 that isn't the frame pointer
892 then it means the object is variable-sized and address through
893 that register or stack slot. COFF has no way to represent this
894 so all we can do is output the variable as a pointer. */
897 if (GET_CODE (XEXP (value, 0)) == REG)
899 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
904 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
906 We want the value of that CONST_INT. */
907 /* Encore compiler hates a newline in a macro arg, it seems. */
908 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
909 (XEXP (XEXP (value, 0), 0)));
910 PUT_SDB_SCL (C_AUTO);
913 type = build_pointer_type (TREE_TYPE (decl));
915 else if (GET_CODE (value) == MEM
916 && ((GET_CODE (XEXP (value, 0)) == PLUS
917 && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG
918 && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT)
919 /* This is for variables which are at offset zero from
920 the frame pointer. This happens on the Alpha.
921 Non-frame pointer registers are excluded above. */
922 || (GET_CODE (XEXP (value, 0)) == REG)))
924 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
925 or (MEM (REG...)). We want the value of that CONST_INT
928 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
929 PUT_SDB_SCL (C_AUTO);
931 else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST)
933 /* Handle an obscure case which can arise when optimizing and
934 when there are few available registers. (This is *always*
935 the case for i386/i486 targets). The DECL_RTL looks like
936 (MEM (CONST ...)) even though this variable is a local `auto'
937 or a local `register' variable. In effect, what has happened
938 is that the reload pass has seen that all assignments and
939 references for one such a local variable can be replaced by
940 equivalent assignments and references to some static storage
941 variable, thereby avoiding the need for a register. In such
942 cases we're forced to lie to debuggers and tell them that
943 this variable was itself `static'. */
945 PUT_SDB_VAL (XEXP (XEXP (value, 0), 0));
946 PUT_SDB_SCL (C_STAT);
950 /* It is something we don't know how to represent for SDB. */
955 PUT_SDB_TYPE (plain_type (type));
959 /* Output SDB information for a top-level initialized variable
960 that has been delayed. */
963 sdbout_toplevel_data (decl)
966 tree type = TREE_TYPE (decl);
968 if (DECL_IGNORED_P (decl))
971 if (! (TREE_CODE (decl) == VAR_DECL
972 && GET_CODE (DECL_RTL (decl)) == MEM
973 && DECL_INITIAL (decl)))
976 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
977 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
978 if (TREE_PUBLIC (decl))
984 PUT_SDB_SCL (C_STAT);
986 PUT_SDB_TYPE (plain_type (type));
990 #ifdef SDB_ALLOW_FORWARD_REFERENCES
992 /* Machinery to record and output anonymous types. */
994 static tree anonymous_types;
997 sdbout_queue_anonymous_type (type)
1000 anonymous_types = saveable_tree_cons (NULL_TREE, type, anonymous_types);
1004 sdbout_dequeue_anonymous_types ()
1006 register tree types, link;
1008 while (anonymous_types)
1010 types = nreverse (anonymous_types);
1011 anonymous_types = NULL_TREE;
1013 for (link = types; link; link = TREE_CHAIN (link))
1015 register tree type = TREE_VALUE (link);
1017 if (type && ! TREE_ASM_WRITTEN (type))
1018 sdbout_one_type (type);
1025 /* Given a chain of ..._TYPE nodes, all of which have names,
1026 output definitions of those names, as typedefs. */
1029 sdbout_types (types)
1030 register tree types;
1034 for (link = types; link; link = TREE_CHAIN (link))
1035 sdbout_one_type (link);
1037 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1038 sdbout_dequeue_anonymous_types ();
1046 if (type == error_mark_node)
1047 type = integer_type_node;
1048 PUT_SDB_TYPE (plain_type (type));
1051 /* Output types of the fields of type TYPE, if they are structs.
1053 Formerly did not chase through pointer types, since that could be circular.
1054 They must come before TYPE, since forward refs are not allowed.
1055 Now james@bigtex.cactus.org says to try them. */
1058 sdbout_field_types (type)
1062 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
1063 if (TREE_CODE (TREE_TYPE (tail)) == POINTER_TYPE)
1064 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
1066 sdbout_one_type (TREE_TYPE (tail));
1069 /* Use this to put out the top level defined record and union types
1070 for later reference. If this is a struct with a name, then put that
1071 name out. Other unnamed structs will have .xxfake labels generated so
1072 that they may be referred to later.
1073 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1074 It may NOT be called recursively. */
1077 sdbout_one_type (type)
1080 if (current_function_decl != NULL_TREE
1081 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE)
1082 ; /* Don't change section amid function. */
1086 switch (TREE_CODE (type))
1090 case QUAL_UNION_TYPE:
1092 type = TYPE_MAIN_VARIANT (type);
1093 /* Don't output a type twice. */
1094 if (TREE_ASM_WRITTEN (type))
1095 /* James said test TREE_ASM_BEING_WRITTEN here. */
1098 /* Output nothing if type is not yet defined. */
1099 if (TYPE_SIZE (type) == 0)
1102 TREE_ASM_WRITTEN (type) = 1;
1104 /* This is reputed to cause trouble with the following case,
1105 but perhaps checking TYPE_SIZE above will fix it. */
1107 /* Here is a test case:
1113 typedef struct intermediate {
1117 typedef struct badstr {
1122 TREE_ASM_BEING_WRITTEN (type) = 1;
1124 /* This change, which ought to make better output,
1125 used to make the COFF assembler unhappy.
1126 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1127 /* Before really doing anything, output types we want to refer to. */
1128 /* Note that in version 1 the following two lines
1129 are not used if forward references are in use. */
1130 if (TREE_CODE (type) != ENUMERAL_TYPE)
1131 sdbout_field_types (type);
1133 TREE_ASM_WRITTEN (type) = 1;
1137 /* Output a structure type. */
1139 int size = int_size_in_bytes (type);
1142 int i, n_baseclasses = 0;
1144 /* Record the type tag, but not in its permanent place just yet. */
1145 sdbout_record_type_name (type);
1147 PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
1149 switch (TREE_CODE (type))
1152 case QUAL_UNION_TYPE:
1153 PUT_SDB_SCL (C_UNTAG);
1154 PUT_SDB_TYPE (T_UNION);
1159 PUT_SDB_SCL (C_STRTAG);
1160 PUT_SDB_TYPE (T_STRUCT);
1165 PUT_SDB_SCL (C_ENTAG);
1166 PUT_SDB_TYPE (T_ENUM);
1171 PUT_SDB_SIZE (size);
1174 /* Print out the base class information with fields
1175 named after the types they hold. */
1176 if (TYPE_BINFO (type)
1177 && TYPE_BINFO_BASETYPES (type))
1178 n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
1179 for (i = 0; i < n_baseclasses; i++)
1181 tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i);
1182 tree child_type = BINFO_TYPE (child);
1183 tree child_type_name;
1184 if (TYPE_NAME (child_type) == 0)
1186 if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE)
1187 child_type_name = TYPE_NAME (child_type);
1188 else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL)
1190 child_type_name = DECL_NAME (TYPE_NAME (child_type));
1191 if (child_type_name && template_name_p (child_type_name))
1193 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type));
1199 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name));
1200 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (BINFO_OFFSET (child)));
1201 PUT_SDB_SCL (member_scl);
1202 sdbout_type (BINFO_TYPE (child));
1206 /* output the individual fields */
1208 if (TREE_CODE (type) == ENUMERAL_TYPE)
1209 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1211 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
1212 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (TREE_VALUE (tem)));
1213 PUT_SDB_SCL (C_MOE);
1214 PUT_SDB_TYPE (T_MOE);
1218 else /* record or union type */
1219 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1220 /* Output the name, type, position (in bits), size (in bits)
1223 /* Omit here the nameless fields that are used to skip bits.
1224 Also omit fields with variable size or position.
1225 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1226 if (TREE_CODE (tem) == FIELD_DECL
1227 && DECL_NAME (tem) != 0
1228 && TREE_CODE (DECL_SIZE (tem)) == INTEGER_CST
1229 && TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST)
1234 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem));
1236 if (DECL_BIT_FIELD_TYPE (tem))
1238 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)));
1239 PUT_SDB_SCL (C_FIELD);
1240 sdbout_type (DECL_BIT_FIELD_TYPE (tem));
1241 PUT_SDB_SIZE (TREE_INT_CST_LOW (DECL_SIZE (tem)));
1245 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))
1247 PUT_SDB_SCL (member_scl);
1248 sdbout_type (TREE_TYPE (tem));
1252 /* output end of a structure,union, or enumeral definition */
1254 PUT_SDB_PLAIN_DEF ("eos");
1255 PUT_SDB_INT_VAL (size);
1256 PUT_SDB_SCL (C_EOS);
1257 PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
1258 PUT_SDB_SIZE (size);
1265 /* The following two functions output definitions of function parameters.
1266 Each parameter gets a definition locating it in the parameter list.
1267 Each parameter that is a register variable gets a second definition
1268 locating it in the register.
1270 Printing or argument lists in gdb uses the definitions that
1271 locate in the parameter list. But reference to the variable in
1272 expressions uses preferentially the definition as a register. */
1274 /* Output definitions, referring to storage in the parmlist,
1275 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1278 sdbout_parms (parms)
1281 for (; parms; parms = TREE_CHAIN (parms))
1282 if (DECL_NAME (parms))
1284 int current_sym_value = 0;
1285 char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1287 if (name == 0 || *name == 0)
1288 name = gen_fake_label ();
1290 /* Perform any necessary register eliminations on the parameter's rtl,
1291 so that the debugging output will be accurate. */
1292 DECL_INCOMING_RTL (parms)
1293 = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
1294 DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX);
1296 if (PARM_PASSED_IN_MEMORY (parms))
1298 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1301 /* ??? Here we assume that the parm address is indexed
1302 off the frame pointer or arg pointer.
1303 If that is not true, we produce meaningless results,
1304 but do not crash. */
1305 if (GET_CODE (addr) == PLUS
1306 && GET_CODE (XEXP (addr, 1)) == CONST_INT)
1307 current_sym_value = INTVAL (XEXP (addr, 1));
1309 current_sym_value = 0;
1311 if (GET_CODE (DECL_RTL (parms)) == REG
1312 && REGNO (DECL_RTL (parms)) >= 0
1313 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1314 type = DECL_ARG_TYPE (parms);
1317 int original_sym_value = current_sym_value;
1319 /* This is the case where the parm is passed as an int or
1320 double and it is converted to a char, short or float
1321 and stored back in the parmlist. In this case, describe
1322 the parm with the variable's declared type, and adjust
1323 the address if the least significant bytes (which we are
1324 using) are not the first ones. */
1325 if (BYTES_BIG_ENDIAN
1326 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1327 current_sym_value +=
1328 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1329 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1331 if (GET_CODE (DECL_RTL (parms)) == MEM
1332 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1333 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1335 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1336 == current_sym_value))
1337 type = TREE_TYPE (parms);
1340 current_sym_value = original_sym_value;
1341 type = DECL_ARG_TYPE (parms);
1346 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
1347 PUT_SDB_SCL (C_ARG);
1348 PUT_SDB_TYPE (plain_type (type));
1351 else if (GET_CODE (DECL_RTL (parms)) == REG)
1354 /* Parm passed in registers and lives in registers or nowhere. */
1356 /* If parm lives in a register, use that register;
1357 pretend the parm was passed there. It would be more consistent
1358 to describe the register where the parm was passed,
1359 but in practice that register usually holds something else. */
1360 if (REGNO (DECL_RTL (parms)) >= 0
1361 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1362 best_rtl = DECL_RTL (parms);
1363 /* If the parm lives nowhere,
1364 use the register where it was passed. */
1366 best_rtl = DECL_INCOMING_RTL (parms);
1369 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl)));
1370 PUT_SDB_SCL (C_REGPARM);
1371 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1374 else if (GET_CODE (DECL_RTL (parms)) == MEM
1375 && XEXP (DECL_RTL (parms), 0) != const0_rtx)
1377 /* Parm was passed in registers but lives on the stack. */
1379 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1380 in which case we want the value of that CONST_INT,
1381 or (MEM (REG ...)) or (MEM (MEM ...)),
1382 in which case we use a value of zero. */
1383 if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
1384 || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
1385 current_sym_value = 0;
1387 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
1389 /* Again, this assumes the offset is based on the arg pointer. */
1391 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value,
1392 XEXP (DECL_RTL (parms), 0)));
1393 PUT_SDB_SCL (C_ARG);
1394 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1400 /* Output definitions for the places where parms live during the function,
1401 when different from where they were passed, when the parms were passed
1404 It is not useful to do this for parms passed in registers
1405 that live during the function in different registers, because it is
1406 impossible to look in the passed register for the passed value,
1407 so we use the within-the-function register to begin with.
1409 PARMS is a chain of PARM_DECL nodes. */
1412 sdbout_reg_parms (parms)
1415 for (; parms; parms = TREE_CHAIN (parms))
1416 if (DECL_NAME (parms))
1418 char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1420 /* Report parms that live in registers during the function
1421 but were passed in memory. */
1422 if (GET_CODE (DECL_RTL (parms)) == REG
1423 && REGNO (DECL_RTL (parms)) >= 0
1424 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
1425 && PARM_PASSED_IN_MEMORY (parms))
1427 if (name == 0 || *name == 0)
1428 name = gen_fake_label ();
1430 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
1431 PUT_SDB_SCL (C_REG);
1432 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1435 /* Report parms that live in memory but not where they were passed. */
1436 else if (GET_CODE (DECL_RTL (parms)) == MEM
1437 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1438 && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
1439 && PARM_PASSED_IN_MEMORY (parms)
1440 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
1442 #if 0 /* ??? It is not clear yet what should replace this. */
1443 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
1444 /* A parm declared char is really passed as an int,
1445 so it occupies the least significant bytes.
1446 On a big-endian machine those are not the low-numbered ones. */
1447 if (BYTES_BIG_ENDIAN
1449 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1450 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1451 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1452 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
1455 if (name == 0 || *name == 0)
1456 name = gen_fake_label ();
1458 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1459 (XEXP (DECL_RTL (parms), 0)));
1460 PUT_SDB_SCL (C_AUTO);
1461 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1468 /* Describe the beginning of an internal block within a function.
1469 Also output descriptions of variables defined in this block.
1471 N is the number of the block, by order of beginning, counting from 1,
1472 and not counting the outermost (function top-level) block.
1473 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1474 if the count starts at 0 for the outermost one. */
1477 sdbout_begin_block (file, line, n)
1482 tree decl = current_function_decl;
1483 MAKE_LINE_SAFE (line);
1485 /* The SCO compiler does not emit a separate block for the function level
1486 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1487 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1488 #ifndef MIPS_DEBUGGING_INFO
1491 PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
1495 /* Include the outermost BLOCK's variables in block 1. */
1496 next_block_number = 0;
1498 sdbout_block (DECL_INITIAL (decl));
1500 /* If -g1, suppress all the internal symbols of functions
1501 except for arguments. */
1502 if (debug_info_level != DINFO_LEVEL_TERSE)
1504 next_block_number = 0;
1506 sdbout_block (DECL_INITIAL (decl));
1509 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1510 sdbout_dequeue_anonymous_types ();
1514 /* Describe the end line-number of an internal block within a function. */
1517 sdbout_end_block (file, line, n)
1522 MAKE_LINE_SAFE (line);
1524 /* The SCO compiler does not emit a separate block for the function level
1525 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1526 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1527 #ifndef MIPS_DEBUGGING_INFO
1530 PUT_SDB_BLOCK_END (line - sdb_begin_function_line);
1533 /* Output sdb info for the current function name.
1534 Called from assemble_start_function. */
1537 sdbout_mark_begin_function ()
1539 sdbout_symbol (current_function_decl, 0);
1542 /* Called at beginning of function body (after prologue).
1543 Record the function's starting line number, so we can output
1544 relative line numbers for the other lines.
1545 Describe beginning of outermost block.
1546 Also describe the parameter list. */
1549 sdbout_begin_function (line)
1552 sdb_begin_function_line = line - 1;
1553 PUT_SDB_FUNCTION_START (line);
1554 sdbout_parms (DECL_ARGUMENTS (current_function_decl));
1555 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
1558 /* Called at end of function (before epilogue).
1559 Describe end of outermost block. */
1562 sdbout_end_function (line)
1565 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1566 sdbout_dequeue_anonymous_types ();
1569 MAKE_LINE_SAFE (line);
1570 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
1572 /* Indicate we are between functions, for line-number output. */
1573 sdb_begin_function_line = -1;
1576 /* Output sdb info for the absolute end of a function.
1577 Called after the epilogue is output. */
1580 sdbout_end_epilogue ()
1582 char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
1583 PUT_SDB_EPILOGUE_END (name);
1586 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1593 PUT_SDB_DEF (LABEL_NAME (insn));
1595 PUT_SDB_SCL (C_LABEL);
1596 PUT_SDB_TYPE (T_NULL);
1600 /* Change to reading from a new source file. */
1603 sdbout_start_new_source_file (filename)
1606 #ifdef MIPS_DEBUGGING_INFO
1607 struct sdb_file *n = (struct sdb_file *) xmalloc (sizeof *n);
1609 n->next = current_file;
1612 PUT_SDB_SRC_FILE (filename);
1616 /* Revert to reading a previous source file. */
1619 sdbout_resume_previous_source_file ()
1621 #ifdef MIPS_DEBUGGING_INFO
1622 struct sdb_file *next;
1624 next = current_file->next;
1625 free (current_file);
1626 current_file = next;
1627 PUT_SDB_SRC_FILE (current_file->name);
1631 #endif /* SDB_DEBUGGING_INFO */