1 /* Output sdb-format symbol table information from GNU compiler.
2 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
3 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* mike@tredysvr.Tredydev.Unisys.COM says:
23 I modified the struct.c example and have a nm of a .o resulting from the
24 AT&T C compiler. From the example below I would conclude the following:
26 1. All .defs from structures are emitted as scanned. The example below
27 clearly shows the symbol table entries for BoxRec2 are after the first
30 2. All functions and their locals (including statics) are emitted as scanned.
32 3. All nested unnamed union and structure .defs must be emitted before
33 the structure in which they are nested. The AT&T assembler is a
34 one pass beast as far as symbolics are concerned.
36 4. All structure .defs are emitted before the typedefs that refer to them.
38 5. All top level static and external variable definitions are moved to the
39 end of file with all top level statics occurring first before externs.
41 6. All undefined references are at the end of the file.
46 #ifdef SDB_DEBUGGING_INFO
54 #include "insn-config.h"
60 /* Mips systems use the SDB functions to dump out symbols, but do not
61 supply usable syms.h include files. Which syms.h file to use is a
62 target parameter so don't use the native one if we're cross compiling. */
64 #if defined(USG) && !defined(MIPS) && !defined (hpux) && !defined(_WIN32) && !defined(__linux__) && !defined(__INTERIX) && !defined(CROSS_COMPILE)
66 /* Use T_INT if we don't have T_VOID. */
74 /* #include <storclass.h> used to be this instead of syms.h. */
76 /* 1 if PARM is passed to this function in memory. */
78 #define PARM_PASSED_IN_MEMORY(PARM) \
79 (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
81 /* A C expression for the integer offset value of an automatic variable
82 (C_AUTO) having address X (an RTX). */
83 #ifndef DEBUGGER_AUTO_OFFSET
84 #define DEBUGGER_AUTO_OFFSET(X) \
85 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
88 /* A C expression for the integer offset value of an argument (C_ARG)
89 having address X (an RTX). The nominal offset is OFFSET. */
90 #ifndef DEBUGGER_ARG_OFFSET
91 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
94 /* Line number of beginning of current function, minus one.
95 Negative means not in a function or not using sdb. */
97 int sdb_begin_function_line = -1;
99 /* Counter to generate unique "names" for nameless struct members. */
101 static int unnamed_struct_number = 0;
103 extern FILE *asm_out_file;
105 extern tree current_function_decl;
109 static char *gen_fake_label PARAMS ((void));
110 static int plain_type PARAMS ((tree));
111 static int template_name_p PARAMS ((tree));
112 static void sdbout_record_type_name PARAMS ((tree));
113 static int plain_type_1 PARAMS ((tree, int));
114 static void sdbout_block PARAMS ((tree));
115 static void sdbout_syms PARAMS ((tree));
116 #ifdef SDB_ALLOW_FORWARD_REFERENCES
117 static void sdbout_queue_anonymous_type PARAMS ((tree));
118 static void sdbout_dequeue_anonymous_types PARAMS ((void));
120 static void sdbout_type PARAMS ((tree));
121 static void sdbout_field_types PARAMS ((tree));
122 static void sdbout_one_type PARAMS ((tree));
123 static void sdbout_parms PARAMS ((tree));
124 static void sdbout_reg_parms PARAMS ((tree));
126 /* Random macros describing parts of SDB data. */
128 /* Put something here if lines get too long */
131 /* Default value of delimiter is ";". */
133 #define SDB_DELIM ";"
136 /* Maximum number of dimensions the assembler will allow. */
138 #define SDB_MAX_DIM 4
142 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
145 #ifndef PUT_SDB_INT_VAL
146 #define PUT_SDB_INT_VAL(a) \
148 fputs ("\t.val\t", asm_out_file); \
149 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
150 fprintf (asm_out_file, "%s", SDB_DELIM); \
156 #define PUT_SDB_VAL(a) \
157 ( fputs ("\t.val\t", asm_out_file), \
158 output_addr_const (asm_out_file, (a)), \
159 fprintf (asm_out_file, SDB_DELIM))
163 #define PUT_SDB_DEF(a) \
164 do { fprintf (asm_out_file, "\t.def\t"); \
165 ASM_OUTPUT_LABELREF (asm_out_file, a); \
166 fprintf (asm_out_file, SDB_DELIM); } while (0)
169 #ifndef PUT_SDB_PLAIN_DEF
170 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
173 #ifndef PUT_SDB_ENDEF
174 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
178 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
182 #define PUT_SDB_SIZE(a) \
184 fputs ("\t.size\t", asm_out_file); \
185 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
186 fprintf (asm_out_file, "%s", SDB_DELIM); \
190 #ifndef PUT_SDB_START_DIM
191 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
194 #ifndef PUT_SDB_NEXT_DIM
195 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
198 #ifndef PUT_SDB_LAST_DIM
199 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
203 #define PUT_SDB_TAG(a) \
204 do { fprintf (asm_out_file, "\t.tag\t"); \
205 ASM_OUTPUT_LABELREF (asm_out_file, a); \
206 fprintf (asm_out_file, SDB_DELIM); } while (0)
209 #ifndef PUT_SDB_BLOCK_START
210 #define PUT_SDB_BLOCK_START(LINE) \
211 fprintf (asm_out_file, \
212 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
213 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
216 #ifndef PUT_SDB_BLOCK_END
217 #define PUT_SDB_BLOCK_END(LINE) \
218 fprintf (asm_out_file, \
219 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
220 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
223 #ifndef PUT_SDB_FUNCTION_START
224 #define PUT_SDB_FUNCTION_START(LINE) \
225 fprintf (asm_out_file, \
226 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
227 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
230 #ifndef PUT_SDB_FUNCTION_END
231 #define PUT_SDB_FUNCTION_END(LINE) \
232 fprintf (asm_out_file, \
233 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
234 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
237 #ifndef PUT_SDB_EPILOGUE_END
238 #define PUT_SDB_EPILOGUE_END(NAME) \
239 do { fprintf (asm_out_file, "\t.def\t"); \
240 ASM_OUTPUT_LABELREF (asm_out_file, NAME); \
241 fprintf (asm_out_file, \
242 "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", \
243 SDB_DELIM, SDB_DELIM, SDB_DELIM); } while (0)
246 #ifndef SDB_GENERATE_FAKE
247 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
248 sprintf ((BUFFER), ".%dfake", (NUMBER));
251 /* Return the sdb tag identifier string for TYPE
252 if TYPE has already been defined; otherwise return a null pointer. */
254 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
256 /* Set the sdb tag identifier string for TYPE to NAME. */
258 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
259 TYPE_SYMTAB_POINTER (TYPE) = (NAME)
261 /* Return the name (a string) of the struct, union or enum tag
262 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
264 #define TAG_NAME(link) \
265 (((link) && TREE_PURPOSE ((link)) \
266 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
267 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
269 /* Ensure we don't output a negative line number. */
270 #define MAKE_LINE_SAFE(line) \
271 if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1
273 /* Perform linker optimization of merging header file definitions together
274 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a
275 post 960826 version of GAS. Nothing breaks with earlier versions of GAS,
276 the optimization just won't be done. The native assembler already has the
277 necessary support. */
279 #ifdef MIPS_DEBUGGING_INFO
281 #ifndef PUT_SDB_SRC_FILE
282 #define PUT_SDB_SRC_FILE(FILENAME) \
283 output_file_directive (asm_out_file, (FILENAME))
286 /* ECOFF linkers have an optimization that does the same kind of thing as
287 N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the
288 executable. To achieve this, GCC must output a .file for each file
291 /* This is a stack of input files. */
295 struct sdb_file *next;
299 /* This is the top of the stack. */
301 static struct sdb_file *current_file;
303 #endif /* MIPS_DEBUGGING_INFO */
305 /* Set up for SDB output at the start of compilation. */
308 sdbout_init (asm_file, input_file_name, syms)
309 FILE *asm_file ATTRIBUTE_UNUSED;
310 const char *input_file_name ATTRIBUTE_UNUSED;
311 tree syms ATTRIBUTE_UNUSED;
313 #ifdef MIPS_DEBUGGING_INFO
314 current_file = (struct sdb_file *) xmalloc (sizeof *current_file);
315 current_file->next = NULL;
316 current_file->name = input_file_name;
319 #ifdef RMS_QUICK_HACK_1
321 for (t = syms; t; t = TREE_CHAIN (t))
322 if (DECL_NAME (t) && IDENTIFIER_POINTER (DECL_NAME (t)) != 0
323 && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t)), "__vtbl_ptr_type"))
324 sdbout_symbol (t, 0);
330 /* return the tag identifier for type
334 tag_of_ru_type (type,link)
337 if (TYPE_SYMTAB_ADDRESS (type))
338 return TYPE_SYMTAB_ADDRESS (type);
339 if (link && TREE_PURPOSE (link)
340 && IDENTIFIER_POINTER (TREE_PURPOSE (link)))
341 TYPE_SYMTAB_ADDRESS (type) = IDENTIFIER_POINTER (TREE_PURPOSE (link));
343 return (char *) TYPE_SYMTAB_ADDRESS (type);
347 /* Return a unique string to name an anonymous type. */
354 SDB_GENERATE_FAKE (label, unnamed_struct_number);
355 unnamed_struct_number++;
356 labelstr = (char *) permalloc (strlen (label) + 1);
357 strcpy (labelstr, label);
361 /* Return the number which describes TYPE for SDB.
362 For pointers, etc., this function is recursive.
363 Each record, union or enumeral type must already have had a
364 tag number output. */
366 /* The number is given by d6d5d4d3d2d1bbbb
367 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
368 Thus, char *foo () has bbbb=T_CHAR
371 N_BTMASK= 017 1111 basic type field.
372 N_TSHIFT= 2 derived type shift
373 N_BTSHFT= 4 Basic type shift */
375 /* Produce the number that describes a pointer, function or array type.
376 PREV is the number describing the target, value or element type.
377 DT_type describes how to transform that type. */
378 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
379 ((((PREV) & ~(int)N_BTMASK) << (int)N_TSHIFT) \
380 | ((int)DT_type << (int)N_BTSHFT) \
381 | ((PREV) & (int)N_BTMASK))
383 /* Number of elements used in sdb_dims. */
384 static int sdb_n_dims = 0;
386 /* Table of array dimensions of current type. */
387 static int sdb_dims[SDB_MAX_DIM];
389 /* Size of outermost array currently being processed. */
390 static int sdb_type_size = -1;
396 int val = plain_type_1 (type, 0);
398 /* If we have already saved up some array dimensions, print them now. */
403 for (i = sdb_n_dims - 1; i > 0; i--)
404 PUT_SDB_NEXT_DIM (sdb_dims[i]);
405 PUT_SDB_LAST_DIM (sdb_dims[0]);
408 sdb_type_size = int_size_in_bytes (type);
409 /* Don't kill sdb if type is not laid out or has variable size. */
410 if (sdb_type_size < 0)
413 /* If we have computed the size of an array containing this type,
415 if (sdb_type_size >= 0)
417 PUT_SDB_SIZE (sdb_type_size);
424 template_name_p (name)
427 register char *ptr = IDENTIFIER_POINTER (name);
428 while (*ptr && *ptr != '<')
435 sdbout_record_type_name (type)
441 if (KNOWN_TYPE_TAG (type))
444 if (TYPE_NAME (type) != 0)
447 /* Find the IDENTIFIER_NODE for the type name. */
448 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
449 t = TYPE_NAME (type);
450 else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
452 t = DECL_NAME (TYPE_NAME (type));
453 /* The DECL_NAME for templates includes "<>", which breaks
454 most assemblers. Use its assembler name instead, which
455 has been mangled into being safe. */
456 if (t && template_name_p (t))
457 t = DECL_ASSEMBLER_NAME (TYPE_NAME (type));
460 /* Now get the name as a string, or invent one. */
462 name = IDENTIFIER_POINTER (t);
465 no_name = (name == 0 || *name == 0);
467 name = gen_fake_label ();
469 SET_KNOWN_TYPE_TAG (type, name);
470 #ifdef SDB_ALLOW_FORWARD_REFERENCES
472 sdbout_queue_anonymous_type (type);
476 /* Return the .type value for type TYPE.
478 LEVEL indicates how many levels deep we have recursed into the type.
479 The SDB debug format can only represent 6 derived levels of types.
480 After that, we must output inaccurate debug info. We deliberately
481 stop before the 7th level, so that ADA recursive types will not give an
485 plain_type_1 (type, level)
490 type = void_type_node;
491 else if (type == error_mark_node)
492 type = integer_type_node;
494 type = TYPE_MAIN_VARIANT (type);
496 switch (TREE_CODE (type))
503 int size = int_size_in_bytes (type) * BITS_PER_UNIT;
505 /* Carefully distinguish all the standard types of C,
506 without messing up if the language is not C.
507 Note that we check only for the names that contain spaces;
508 other names might occur by coincidence in other languages. */
509 if (TYPE_NAME (type) != 0
510 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
511 && DECL_NAME (TYPE_NAME (type)) != 0
512 && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE)
514 char *name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
516 if (!strcmp (name, "char"))
518 if (!strcmp (name, "unsigned char"))
520 if (!strcmp (name, "signed char"))
522 if (!strcmp (name, "int"))
524 if (!strcmp (name, "unsigned int"))
526 if (!strcmp (name, "short int"))
528 if (!strcmp (name, "short unsigned int"))
530 if (!strcmp (name, "long int"))
532 if (!strcmp (name, "long unsigned int"))
536 if (size == INT_TYPE_SIZE)
537 return (TREE_UNSIGNED (type) ? T_UINT : T_INT);
538 if (size == CHAR_TYPE_SIZE)
539 return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
540 if (size == SHORT_TYPE_SIZE)
541 return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT);
542 if (size == LONG_TYPE_SIZE)
543 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
544 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */
545 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
551 int precision = TYPE_PRECISION (type);
552 if (precision == FLOAT_TYPE_SIZE)
554 if (precision == DOUBLE_TYPE_SIZE)
556 #ifdef EXTENDED_SDB_BASIC_TYPES
557 if (precision == LONG_DOUBLE_TYPE_SIZE)
560 if (precision == LONG_DOUBLE_TYPE_SIZE)
561 return T_DOUBLE; /* better than nothing */
572 m = plain_type_1 (TREE_TYPE (type), level+1);
573 if (sdb_n_dims < SDB_MAX_DIM)
574 sdb_dims[sdb_n_dims++]
575 = (TYPE_DOMAIN (type)
576 && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0
577 && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0
578 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0)
579 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0)
580 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0)
581 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1)
584 return PUSH_DERIVED_LEVEL (DT_ARY, m);
589 case QUAL_UNION_TYPE:
593 #ifdef SDB_ALLOW_FORWARD_REFERENCES
594 sdbout_record_type_name (type);
596 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
597 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
598 #ifdef SDB_ALLOW_FORWARD_REFERENCES
599 || TYPE_MODE (type) != VOIDmode
604 /* Output the referenced structure tag name
605 only if the .def has already been finished.
606 At least on 386, the Unix assembler
607 cannot handle forward references to tags. */
608 /* But the 88100, it requires them, sigh... */
609 /* And the MIPS requires unknown refs as well... */
610 tag = KNOWN_TYPE_TAG (type);
612 /* These 3 lines used to follow the close brace.
613 However, a size of 0 without a tag implies a tag of 0,
614 so if we don't know a tag, we can't mention the size. */
615 sdb_type_size = int_size_in_bytes (type);
616 if (sdb_type_size < 0)
619 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
620 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION
621 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION
631 m = plain_type_1 (TREE_TYPE (type), level+1);
632 return PUSH_DERIVED_LEVEL (DT_PTR, m);
641 m = plain_type_1 (TREE_TYPE (type), level+1);
642 return PUSH_DERIVED_LEVEL (DT_FCN, m);
649 /* Output the symbols defined in block number DO_BLOCK.
651 This function works by walking the tree structure of blocks,
652 counting blocks until it finds the desired block. */
654 static int do_block = 0;
662 /* Ignore blocks never expanded or otherwise marked as real. */
663 if (TREE_USED (block))
665 /* When we reach the specified block, output its symbols. */
666 if (BLOCK_NUMBER (block) == do_block)
667 sdbout_syms (BLOCK_VARS (block));
669 /* If we are past the specified block, stop the scan. */
670 if (BLOCK_NUMBER (block) > do_block)
673 /* Scan the blocks within this block. */
674 sdbout_block (BLOCK_SUBBLOCKS (block));
677 block = BLOCK_CHAIN (block);
681 /* Call sdbout_symbol on each decl in the chain SYMS. */
689 if (TREE_CODE (syms) != LABEL_DECL)
690 sdbout_symbol (syms, 1);
691 syms = TREE_CHAIN (syms);
695 /* Output SDB information for a symbol described by DECL.
696 LOCAL is nonzero if the symbol is not file-scope. */
699 sdbout_symbol (decl, local)
703 tree type = TREE_TYPE (decl);
704 tree context = NULL_TREE;
709 sdbout_one_type (type);
711 #if 0 /* This loses when functions are marked to be ignored,
712 which happens in the C++ front end. */
713 if (DECL_IGNORED_P (decl))
717 switch (TREE_CODE (decl))
720 /* Enum values are defined by defining the enum type. */
724 /* Don't mention a nested function under its parent. */
725 context = decl_function_context (decl);
726 if (context == current_function_decl)
728 /* Check DECL_INITIAL to distinguish declarations from definitions.
729 Don't output debug info here for declarations; they will have
730 a DECL_INITIAL value of 0. */
731 if (! DECL_INITIAL (decl))
733 if (GET_CODE (DECL_RTL (decl)) != MEM
734 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
736 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
737 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
738 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
742 /* Done with tagged types. */
743 if (DECL_NAME (decl) == 0)
745 if (DECL_IGNORED_P (decl))
748 /* Output typedef name. */
749 if (template_name_p (DECL_NAME (decl)))
750 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
752 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
753 PUT_SDB_SCL (C_TPDEF);
757 /* Parm decls go in their own separate chains
758 and are output by sdbout_reg_parms and sdbout_parms. */
762 /* Don't mention a variable that is external.
763 Let the file that defines it describe it. */
764 if (DECL_EXTERNAL (decl))
767 /* Ignore __FUNCTION__, etc. */
768 if (DECL_IGNORED_P (decl))
771 /* If there was an error in the declaration, don't dump core
772 if there is no RTL associated with the variable doesn't
774 if (DECL_RTL (decl) == 0)
777 DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX);
778 #ifdef LEAF_REG_REMAP
779 if (current_function_uses_only_leaf_regs)
780 leaf_renumber_regs_insn (DECL_RTL (decl));
782 value = DECL_RTL (decl);
784 /* Don't mention a variable at all
785 if it was completely optimized into nothingness.
787 If DECL was from an inline function, then its rtl
788 is not identically the rtl that was used in this
789 particular compilation. */
790 if (GET_CODE (value) == REG)
792 regno = REGNO (DECL_RTL (decl));
793 if (regno >= FIRST_PSEUDO_REGISTER)
796 else if (GET_CODE (value) == SUBREG)
799 while (GET_CODE (value) == SUBREG)
801 offset += SUBREG_WORD (value);
802 value = SUBREG_REG (value);
804 if (GET_CODE (value) == REG)
806 regno = REGNO (value);
807 if (regno >= FIRST_PSEUDO_REGISTER)
811 alter_subreg (DECL_RTL (decl));
812 value = DECL_RTL (decl);
814 /* Don't output anything if an auto variable
815 gets RTL that is static.
816 GAS version 2.2 can't handle such output. */
817 else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0))
818 && ! TREE_STATIC (decl))
821 /* Emit any structure, union, or enum type that has not been output.
822 This occurs for tag-less structs (et al) used to declare variables
824 if (TREE_CODE (type) == ENUMERAL_TYPE
825 || TREE_CODE (type) == RECORD_TYPE
826 || TREE_CODE (type) == UNION_TYPE
827 || TREE_CODE (type) == QUAL_UNION_TYPE)
829 if (COMPLETE_TYPE_P (type) /* not a forward reference */
830 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
831 sdbout_one_type (type);
834 /* Defer SDB information for top-level initialized variables! */
836 && GET_CODE (value) == MEM
837 && DECL_INITIAL (decl))
840 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
841 For now, avoid crashing. */
842 if (DECL_NAME (decl) == NULL_TREE)
845 /* Record the name for, starting a symtab entry. */
846 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
848 if (GET_CODE (value) == MEM
849 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
852 if (TREE_PUBLIC (decl))
854 PUT_SDB_VAL (XEXP (value, 0));
859 PUT_SDB_VAL (XEXP (value, 0));
860 PUT_SDB_SCL (C_STAT);
866 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
869 else if (GET_CODE (value) == MEM
870 && (GET_CODE (XEXP (value, 0)) == MEM
871 || (GET_CODE (XEXP (value, 0)) == REG
872 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM
873 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
874 /* If the value is indirect by memory or by a register
875 that isn't the frame pointer
876 then it means the object is variable-sized and address through
877 that register or stack slot. COFF has no way to represent this
878 so all we can do is output the variable as a pointer. */
881 if (GET_CODE (XEXP (value, 0)) == REG)
883 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
888 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
890 We want the value of that CONST_INT. */
891 /* Encore compiler hates a newline in a macro arg, it seems. */
892 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
893 (XEXP (XEXP (value, 0), 0)));
894 PUT_SDB_SCL (C_AUTO);
897 /* Effectively do build_pointer_type, but don't cache this type,
898 since it might be temporary whereas the type it points to
899 might have been saved for inlining. */
900 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
901 type = make_node (POINTER_TYPE);
902 TREE_TYPE (type) = TREE_TYPE (decl);
904 else if (GET_CODE (value) == MEM
905 && ((GET_CODE (XEXP (value, 0)) == PLUS
906 && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG
907 && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT)
908 /* This is for variables which are at offset zero from
909 the frame pointer. This happens on the Alpha.
910 Non-frame pointer registers are excluded above. */
911 || (GET_CODE (XEXP (value, 0)) == REG)))
913 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
914 or (MEM (REG...)). We want the value of that CONST_INT
917 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
918 PUT_SDB_SCL (C_AUTO);
920 else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST)
922 /* Handle an obscure case which can arise when optimizing and
923 when there are few available registers. (This is *always*
924 the case for i386/i486 targets). The DECL_RTL looks like
925 (MEM (CONST ...)) even though this variable is a local `auto'
926 or a local `register' variable. In effect, what has happened
927 is that the reload pass has seen that all assignments and
928 references for one such a local variable can be replaced by
929 equivalent assignments and references to some static storage
930 variable, thereby avoiding the need for a register. In such
931 cases we're forced to lie to debuggers and tell them that
932 this variable was itself `static'. */
934 PUT_SDB_VAL (XEXP (XEXP (value, 0), 0));
935 PUT_SDB_SCL (C_STAT);
939 /* It is something we don't know how to represent for SDB. */
947 PUT_SDB_TYPE (plain_type (type));
951 /* Output SDB information for a top-level initialized variable
952 that has been delayed. */
955 sdbout_toplevel_data (decl)
958 tree type = TREE_TYPE (decl);
960 if (DECL_IGNORED_P (decl))
963 if (! (TREE_CODE (decl) == VAR_DECL
964 && GET_CODE (DECL_RTL (decl)) == MEM
965 && DECL_INITIAL (decl)))
968 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
969 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
970 if (TREE_PUBLIC (decl))
976 PUT_SDB_SCL (C_STAT);
978 PUT_SDB_TYPE (plain_type (type));
982 #ifdef SDB_ALLOW_FORWARD_REFERENCES
984 /* Machinery to record and output anonymous types. */
986 static tree anonymous_types;
989 sdbout_queue_anonymous_type (type)
992 anonymous_types = saveable_tree_cons (NULL_TREE, type, anonymous_types);
996 sdbout_dequeue_anonymous_types ()
998 register tree types, link;
1000 while (anonymous_types)
1002 types = nreverse (anonymous_types);
1003 anonymous_types = NULL_TREE;
1005 for (link = types; link; link = TREE_CHAIN (link))
1007 register tree type = TREE_VALUE (link);
1009 if (type && ! TREE_ASM_WRITTEN (type))
1010 sdbout_one_type (type);
1017 /* Given a chain of ..._TYPE nodes, all of which have names,
1018 output definitions of those names, as typedefs. */
1021 sdbout_types (types)
1022 register tree types;
1026 for (link = types; link; link = TREE_CHAIN (link))
1027 sdbout_one_type (link);
1029 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1030 sdbout_dequeue_anonymous_types ();
1038 if (type == error_mark_node)
1039 type = integer_type_node;
1040 PUT_SDB_TYPE (plain_type (type));
1043 /* Output types of the fields of type TYPE, if they are structs.
1045 Formerly did not chase through pointer types, since that could be circular.
1046 They must come before TYPE, since forward refs are not allowed.
1047 Now james@bigtex.cactus.org says to try them. */
1050 sdbout_field_types (type)
1055 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
1056 /* This condition should match the one for emitting the actual members
1058 if (TREE_CODE (tail) == FIELD_DECL
1059 && DECL_NAME (tail) != 0
1060 && ! host_integerp (DECL_SIZE (tail), 1)
1061 && ! host_integerp (bit_position (tail), 0))
1063 if (POINTER_TYPE_P (TREE_TYPE (tail)))
1064 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
1066 sdbout_one_type (TREE_TYPE (tail));
1070 /* Use this to put out the top level defined record and union types
1071 for later reference. If this is a struct with a name, then put that
1072 name out. Other unnamed structs will have .xxfake labels generated so
1073 that they may be referred to later.
1074 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1075 It may NOT be called recursively. */
1078 sdbout_one_type (type)
1081 if (current_function_decl != NULL_TREE
1082 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE)
1083 ; /* Don't change section amid function. */
1087 switch (TREE_CODE (type))
1091 case QUAL_UNION_TYPE:
1093 type = TYPE_MAIN_VARIANT (type);
1094 /* Don't output a type twice. */
1095 if (TREE_ASM_WRITTEN (type))
1096 /* James said test TREE_ASM_BEING_WRITTEN here. */
1099 /* Output nothing if type is not yet defined. */
1100 if (!COMPLETE_TYPE_P (type))
1103 TREE_ASM_WRITTEN (type) = 1;
1105 /* This is reputed to cause trouble with the following case,
1106 but perhaps checking TYPE_SIZE above will fix it. */
1108 /* Here is a test case:
1114 typedef struct intermediate {
1118 typedef struct badstr {
1123 TREE_ASM_BEING_WRITTEN (type) = 1;
1125 /* This change, which ought to make better output,
1126 used to make the COFF assembler unhappy.
1127 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1128 /* Before really doing anything, output types we want to refer to. */
1129 /* Note that in version 1 the following two lines
1130 are not used if forward references are in use. */
1131 if (TREE_CODE (type) != ENUMERAL_TYPE)
1132 sdbout_field_types (type);
1134 TREE_ASM_WRITTEN (type) = 1;
1138 /* Output a structure type. */
1140 int size = int_size_in_bytes (type);
1143 int i, n_baseclasses = 0;
1145 /* Record the type tag, but not in its permanent place just yet. */
1146 sdbout_record_type_name (type);
1148 PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
1150 switch (TREE_CODE (type))
1153 case QUAL_UNION_TYPE:
1154 PUT_SDB_SCL (C_UNTAG);
1155 PUT_SDB_TYPE (T_UNION);
1160 PUT_SDB_SCL (C_STRTAG);
1161 PUT_SDB_TYPE (T_STRUCT);
1166 PUT_SDB_SCL (C_ENTAG);
1167 PUT_SDB_TYPE (T_ENUM);
1175 PUT_SDB_SIZE (size);
1178 /* Print out the base class information with fields
1179 named after the types they hold. */
1180 /* This is only relevent to aggregate types. TYPE_BINFO is used
1181 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1183 if (TREE_CODE (type) != ENUMERAL_TYPE)
1185 if (TYPE_BINFO (type)
1186 && TYPE_BINFO_BASETYPES (type))
1187 n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
1188 for (i = 0; i < n_baseclasses; i++)
1190 tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)),
1192 tree child_type = BINFO_TYPE (child);
1193 tree child_type_name;
1194 if (TYPE_NAME (child_type) == 0)
1196 if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE)
1197 child_type_name = TYPE_NAME (child_type);
1198 else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL)
1200 child_type_name = DECL_NAME (TYPE_NAME (child_type));
1201 if (child_type_name && template_name_p (child_type_name))
1203 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type));
1209 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name));
1210 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0));
1211 PUT_SDB_SCL (member_scl);
1212 sdbout_type (BINFO_TYPE (child));
1217 /* output the individual fields */
1219 if (TREE_CODE (type) == ENUMERAL_TYPE)
1221 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1222 if (host_integerp (TREE_VALUE (tem), 0))
1224 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
1225 PUT_SDB_INT_VAL (tree_low_cst (TREE_VALUE (tem), 0));
1226 PUT_SDB_SCL (C_MOE);
1227 PUT_SDB_TYPE (T_MOE);
1231 else /* record or union type */
1232 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1233 /* Output the name, type, position (in bits), size (in bits)
1236 /* Omit here the nameless fields that are used to skip bits.
1237 Also omit fields with variable size or position.
1238 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1239 if (TREE_CODE (tem) == FIELD_DECL
1240 && DECL_NAME (tem) != 0
1241 && host_integerp (DECL_SIZE (tem), 1)
1242 && host_integerp (bit_position (tem), 0))
1247 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem));
1249 if (DECL_BIT_FIELD_TYPE (tem))
1251 PUT_SDB_INT_VAL (int_bit_position (tem));
1252 PUT_SDB_SCL (C_FIELD);
1253 sdbout_type (DECL_BIT_FIELD_TYPE (tem));
1254 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1));
1258 PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT);
1259 PUT_SDB_SCL (member_scl);
1260 sdbout_type (TREE_TYPE (tem));
1264 /* output end of a structure,union, or enumeral definition */
1266 PUT_SDB_PLAIN_DEF ("eos");
1267 PUT_SDB_INT_VAL (size);
1268 PUT_SDB_SCL (C_EOS);
1269 PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
1270 PUT_SDB_SIZE (size);
1280 /* The following two functions output definitions of function parameters.
1281 Each parameter gets a definition locating it in the parameter list.
1282 Each parameter that is a register variable gets a second definition
1283 locating it in the register.
1285 Printing or argument lists in gdb uses the definitions that
1286 locate in the parameter list. But reference to the variable in
1287 expressions uses preferentially the definition as a register. */
1289 /* Output definitions, referring to storage in the parmlist,
1290 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1293 sdbout_parms (parms)
1296 for (; parms; parms = TREE_CHAIN (parms))
1297 if (DECL_NAME (parms))
1299 int current_sym_value = 0;
1300 char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1302 if (name == 0 || *name == 0)
1303 name = gen_fake_label ();
1305 /* Perform any necessary register eliminations on the parameter's rtl,
1306 so that the debugging output will be accurate. */
1307 DECL_INCOMING_RTL (parms)
1308 = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
1309 DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX);
1311 if (PARM_PASSED_IN_MEMORY (parms))
1313 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1316 /* ??? Here we assume that the parm address is indexed
1317 off the frame pointer or arg pointer.
1318 If that is not true, we produce meaningless results,
1319 but do not crash. */
1320 if (GET_CODE (addr) == PLUS
1321 && GET_CODE (XEXP (addr, 1)) == CONST_INT)
1322 current_sym_value = INTVAL (XEXP (addr, 1));
1324 current_sym_value = 0;
1326 if (GET_CODE (DECL_RTL (parms)) == REG
1327 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1328 type = DECL_ARG_TYPE (parms);
1331 int original_sym_value = current_sym_value;
1333 /* This is the case where the parm is passed as an int or
1334 double and it is converted to a char, short or float
1335 and stored back in the parmlist. In this case, describe
1336 the parm with the variable's declared type, and adjust
1337 the address if the least significant bytes (which we are
1338 using) are not the first ones. */
1339 if (BYTES_BIG_ENDIAN
1340 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1341 current_sym_value +=
1342 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1343 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1345 if (GET_CODE (DECL_RTL (parms)) == MEM
1346 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1347 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1349 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1350 == current_sym_value))
1351 type = TREE_TYPE (parms);
1354 current_sym_value = original_sym_value;
1355 type = DECL_ARG_TYPE (parms);
1360 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
1361 PUT_SDB_SCL (C_ARG);
1362 PUT_SDB_TYPE (plain_type (type));
1365 else if (GET_CODE (DECL_RTL (parms)) == REG)
1368 /* Parm passed in registers and lives in registers or nowhere. */
1370 /* If parm lives in a register, use that register;
1371 pretend the parm was passed there. It would be more consistent
1372 to describe the register where the parm was passed,
1373 but in practice that register usually holds something else. */
1374 if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1375 best_rtl = DECL_RTL (parms);
1376 /* If the parm lives nowhere,
1377 use the register where it was passed. */
1379 best_rtl = DECL_INCOMING_RTL (parms);
1382 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl)));
1383 PUT_SDB_SCL (C_REGPARM);
1384 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1387 else if (GET_CODE (DECL_RTL (parms)) == MEM
1388 && XEXP (DECL_RTL (parms), 0) != const0_rtx)
1390 /* Parm was passed in registers but lives on the stack. */
1392 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1393 in which case we want the value of that CONST_INT,
1394 or (MEM (REG ...)) or (MEM (MEM ...)),
1395 in which case we use a value of zero. */
1396 if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
1397 || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
1398 current_sym_value = 0;
1400 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
1402 /* Again, this assumes the offset is based on the arg pointer. */
1404 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value,
1405 XEXP (DECL_RTL (parms), 0)));
1406 PUT_SDB_SCL (C_ARG);
1407 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1413 /* Output definitions for the places where parms live during the function,
1414 when different from where they were passed, when the parms were passed
1417 It is not useful to do this for parms passed in registers
1418 that live during the function in different registers, because it is
1419 impossible to look in the passed register for the passed value,
1420 so we use the within-the-function register to begin with.
1422 PARMS is a chain of PARM_DECL nodes. */
1425 sdbout_reg_parms (parms)
1428 for (; parms; parms = TREE_CHAIN (parms))
1429 if (DECL_NAME (parms))
1431 char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1433 /* Report parms that live in registers during the function
1434 but were passed in memory. */
1435 if (GET_CODE (DECL_RTL (parms)) == REG
1436 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
1437 && PARM_PASSED_IN_MEMORY (parms))
1439 if (name == 0 || *name == 0)
1440 name = gen_fake_label ();
1442 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
1443 PUT_SDB_SCL (C_REG);
1444 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1447 /* Report parms that live in memory but not where they were passed. */
1448 else if (GET_CODE (DECL_RTL (parms)) == MEM
1449 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1450 && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
1451 && PARM_PASSED_IN_MEMORY (parms)
1452 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
1454 #if 0 /* ??? It is not clear yet what should replace this. */
1455 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
1456 /* A parm declared char is really passed as an int,
1457 so it occupies the least significant bytes.
1458 On a big-endian machine those are not the low-numbered ones. */
1459 if (BYTES_BIG_ENDIAN
1461 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1462 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1463 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1464 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
1467 if (name == 0 || *name == 0)
1468 name = gen_fake_label ();
1470 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1471 (XEXP (DECL_RTL (parms), 0)));
1472 PUT_SDB_SCL (C_AUTO);
1473 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1480 /* Describe the beginning of an internal block within a function.
1481 Also output descriptions of variables defined in this block.
1483 N is the number of the block, by order of beginning, counting from 1,
1484 and not counting the outermost (function top-level) block.
1485 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1486 if the count starts at 0 for the outermost one. */
1489 sdbout_begin_block (file, line, n)
1490 FILE *file ATTRIBUTE_UNUSED;
1494 tree decl = current_function_decl;
1495 MAKE_LINE_SAFE (line);
1497 /* The SCO compiler does not emit a separate block for the function level
1498 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1499 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1500 #ifndef MIPS_DEBUGGING_INFO
1503 PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
1507 /* Include the outermost BLOCK's variables in block 1. */
1508 do_block = BLOCK_NUMBER (DECL_INITIAL (decl));
1509 sdbout_block (DECL_INITIAL (decl));
1511 /* If -g1, suppress all the internal symbols of functions
1512 except for arguments. */
1513 if (debug_info_level != DINFO_LEVEL_TERSE)
1516 sdbout_block (DECL_INITIAL (decl));
1519 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1520 sdbout_dequeue_anonymous_types ();
1524 /* Describe the end line-number of an internal block within a function. */
1527 sdbout_end_block (file, line, n)
1528 FILE *file ATTRIBUTE_UNUSED;
1530 int n ATTRIBUTE_UNUSED;
1532 MAKE_LINE_SAFE (line);
1534 /* The SCO compiler does not emit a separate block for the function level
1535 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1536 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1537 #ifndef MIPS_DEBUGGING_INFO
1540 PUT_SDB_BLOCK_END (line - sdb_begin_function_line);
1543 /* Output sdb info for the current function name.
1544 Called from assemble_start_function. */
1547 sdbout_mark_begin_function ()
1549 sdbout_symbol (current_function_decl, 0);
1552 /* Called at beginning of function body (after prologue).
1553 Record the function's starting line number, so we can output
1554 relative line numbers for the other lines.
1555 Describe beginning of outermost block.
1556 Also describe the parameter list. */
1559 sdbout_begin_function (line)
1562 sdb_begin_function_line = line - 1;
1563 PUT_SDB_FUNCTION_START (line);
1564 sdbout_parms (DECL_ARGUMENTS (current_function_decl));
1565 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
1568 /* Called at end of function (before epilogue).
1569 Describe end of outermost block. */
1572 sdbout_end_function (line)
1575 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1576 sdbout_dequeue_anonymous_types ();
1579 MAKE_LINE_SAFE (line);
1580 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
1582 /* Indicate we are between functions, for line-number output. */
1583 sdb_begin_function_line = -1;
1586 /* Output sdb info for the absolute end of a function.
1587 Called after the epilogue is output. */
1590 sdbout_end_epilogue ()
1592 char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
1593 PUT_SDB_EPILOGUE_END (name);
1596 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1603 PUT_SDB_DEF (LABEL_NAME (insn));
1605 PUT_SDB_SCL (C_LABEL);
1606 PUT_SDB_TYPE (T_NULL);
1610 /* Change to reading from a new source file. */
1613 sdbout_start_new_source_file (filename)
1614 const char *filename ATTRIBUTE_UNUSED;
1616 #ifdef MIPS_DEBUGGING_INFO
1617 struct sdb_file *n = (struct sdb_file *) xmalloc (sizeof *n);
1619 n->next = current_file;
1622 PUT_SDB_SRC_FILE (filename);
1626 /* Revert to reading a previous source file. */
1629 sdbout_resume_previous_source_file ()
1631 #ifdef MIPS_DEBUGGING_INFO
1632 struct sdb_file *next;
1634 next = current_file->next;
1635 free (current_file);
1636 current_file = next;
1637 PUT_SDB_SRC_FILE (current_file->name);
1641 #endif /* SDB_DEBUGGING_INFO */