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 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) 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, "char"))
536 if (!strcmp (name, "unsigned char"))
538 if (!strcmp (name, "signed char"))
540 if (!strcmp (name, "int"))
542 if (!strcmp (name, "unsigned int"))
544 if (!strcmp (name, "short int"))
546 if (!strcmp (name, "short unsigned int"))
548 if (!strcmp (name, "long int"))
550 if (!strcmp (name, "long unsigned int"))
554 if (size == INT_TYPE_SIZE)
555 return (TREE_UNSIGNED (type) ? T_UINT : T_INT);
556 if (size == CHAR_TYPE_SIZE)
557 return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
558 if (size == SHORT_TYPE_SIZE)
559 return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT);
560 if (size == LONG_TYPE_SIZE)
561 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
562 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */
563 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
569 int precision = TYPE_PRECISION (type);
570 if (precision == FLOAT_TYPE_SIZE)
572 if (precision == DOUBLE_TYPE_SIZE)
574 #ifdef EXTENDED_SDB_BASIC_TYPES
575 if (precision == LONG_DOUBLE_TYPE_SIZE)
587 m = plain_type_1 (TREE_TYPE (type), level+1);
588 if (sdb_n_dims < SDB_MAX_DIM)
589 sdb_dims[sdb_n_dims++]
590 = (TYPE_DOMAIN (type)
591 && TYPE_MAX_VALUE (TYPE_DOMAIN (type))
592 && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST
593 && TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST
594 ? (TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type)))
595 - TREE_INT_CST_LOW (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) + 1)
597 return PUSH_DERIVED_LEVEL (DT_ARY, m);
602 case QUAL_UNION_TYPE:
606 #ifdef SDB_ALLOW_FORWARD_REFERENCES
607 sdbout_record_type_name (type);
609 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
610 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
611 #ifdef SDB_ALLOW_FORWARD_REFERENCES
612 || TYPE_MODE (type) != VOIDmode
617 /* Output the referenced structure tag name
618 only if the .def has already been finished.
619 At least on 386, the Unix assembler
620 cannot handle forward references to tags. */
621 /* But the 88100, it requires them, sigh... */
622 /* And the MIPS requires unknown refs as well... */
623 tag = KNOWN_TYPE_TAG (type);
625 /* These 3 lines used to follow the close brace.
626 However, a size of 0 without a tag implies a tag of 0,
627 so if we don't know a tag, we can't mention the size. */
628 sdb_type_size = int_size_in_bytes (type);
629 if (sdb_type_size < 0)
632 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
633 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION
634 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION
644 m = plain_type_1 (TREE_TYPE (type), level+1);
645 return PUSH_DERIVED_LEVEL (DT_PTR, m);
654 m = plain_type_1 (TREE_TYPE (type), level+1);
655 return PUSH_DERIVED_LEVEL (DT_FCN, m);
662 /* Output the symbols defined in block number DO_BLOCK.
663 Set NEXT_BLOCK_NUMBER to 0 before calling.
665 This function works by walking the tree structure of blocks,
666 counting blocks until it finds the desired block. */
668 static int do_block = 0;
670 static int next_block_number;
678 /* Ignore blocks never expanded or otherwise marked as real. */
679 if (TREE_USED (block))
681 /* When we reach the specified block, output its symbols. */
682 if (next_block_number == do_block)
684 sdbout_syms (BLOCK_VARS (block));
687 /* If we are past the specified block, stop the scan. */
688 if (next_block_number > do_block)
693 /* Scan the blocks within this block. */
694 sdbout_block (BLOCK_SUBBLOCKS (block));
697 block = BLOCK_CHAIN (block);
701 /* Call sdbout_symbol on each decl in the chain SYMS. */
709 if (TREE_CODE (syms) != LABEL_DECL)
710 sdbout_symbol (syms, 1);
711 syms = TREE_CHAIN (syms);
715 /* Output SDB information for a symbol described by DECL.
716 LOCAL is nonzero if the symbol is not file-scope. */
719 sdbout_symbol (decl, local)
723 tree type = TREE_TYPE (decl);
724 tree context = NULL_TREE;
729 sdbout_one_type (type);
731 #if 0 /* This loses when functions are marked to be ignored,
732 which happens in the C++ front end. */
733 if (DECL_IGNORED_P (decl))
737 switch (TREE_CODE (decl))
740 /* Enum values are defined by defining the enum type. */
744 /* Don't mention a nested function under its parent. */
745 context = decl_function_context (decl);
746 if (context == current_function_decl)
748 /* Check DECL_INITIAL to distinguish declarations from definitions.
749 Don't output debug info here for declarations; they will have
750 a DECL_INITIAL value of 0. */
751 if (! DECL_INITIAL (decl))
753 if (GET_CODE (DECL_RTL (decl)) != MEM
754 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
756 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
757 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
758 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
762 /* Done with tagged types. */
763 if (DECL_NAME (decl) == 0)
765 if (DECL_IGNORED_P (decl))
768 /* Output typedef name. */
769 if (template_name_p (DECL_NAME (decl)))
770 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
772 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
773 PUT_SDB_SCL (C_TPDEF);
777 /* Parm decls go in their own separate chains
778 and are output by sdbout_reg_parms and sdbout_parms. */
782 /* Don't mention a variable that is external.
783 Let the file that defines it describe it. */
784 if (DECL_EXTERNAL (decl))
787 /* Ignore __FUNCTION__, etc. */
788 if (DECL_IGNORED_P (decl))
791 /* If there was an error in the declaration, don't dump core
792 if there is no RTL associated with the variable doesn't
794 if (DECL_RTL (decl) == 0)
797 DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX);
798 #ifdef LEAF_REG_REMAP
800 leaf_renumber_regs_insn (DECL_RTL (decl));
802 value = DECL_RTL (decl);
804 /* Don't mention a variable at all
805 if it was completely optimized into nothingness.
807 If DECL was from an inline function, then its rtl
808 is not identically the rtl that was used in this
809 particular compilation. */
810 if (GET_CODE (value) == REG)
812 regno = REGNO (DECL_RTL (decl));
813 if (regno >= FIRST_PSEUDO_REGISTER)
816 else if (GET_CODE (value) == SUBREG)
819 while (GET_CODE (value) == SUBREG)
821 offset += SUBREG_WORD (value);
822 value = SUBREG_REG (value);
824 if (GET_CODE (value) == REG)
826 regno = REGNO (value);
827 if (regno >= FIRST_PSEUDO_REGISTER)
831 alter_subreg (DECL_RTL (decl));
832 value = DECL_RTL (decl);
834 /* Don't output anything if an auto variable
835 gets RTL that is static.
836 GAS version 2.2 can't handle such output. */
837 else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0))
838 && ! TREE_STATIC (decl))
841 /* Emit any structure, union, or enum type that has not been output.
842 This occurs for tag-less structs (et al) used to declare variables
844 if (TREE_CODE (type) == ENUMERAL_TYPE
845 || TREE_CODE (type) == RECORD_TYPE
846 || TREE_CODE (type) == UNION_TYPE
847 || TREE_CODE (type) == QUAL_UNION_TYPE)
849 if (TYPE_SIZE (type) != 0 /* not a forward reference */
850 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
851 sdbout_one_type (type);
854 /* Defer SDB information for top-level initialized variables! */
856 && GET_CODE (value) == MEM
857 && DECL_INITIAL (decl))
860 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
861 For now, avoid crashing. */
862 if (DECL_NAME (decl) == NULL_TREE)
865 /* Record the name for, starting a symtab entry. */
866 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
868 if (GET_CODE (value) == MEM
869 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
872 if (TREE_PUBLIC (decl))
874 PUT_SDB_VAL (XEXP (value, 0));
879 PUT_SDB_VAL (XEXP (value, 0));
880 PUT_SDB_SCL (C_STAT);
886 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
889 else if (GET_CODE (value) == MEM
890 && (GET_CODE (XEXP (value, 0)) == MEM
891 || (GET_CODE (XEXP (value, 0)) == REG
892 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM
893 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
894 /* If the value is indirect by memory or by a register
895 that isn't the frame pointer
896 then it means the object is variable-sized and address through
897 that register or stack slot. COFF has no way to represent this
898 so all we can do is output the variable as a pointer. */
901 if (GET_CODE (XEXP (value, 0)) == REG)
903 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
908 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
910 We want the value of that CONST_INT. */
911 /* Encore compiler hates a newline in a macro arg, it seems. */
912 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
913 (XEXP (XEXP (value, 0), 0)));
914 PUT_SDB_SCL (C_AUTO);
917 type = build_pointer_type (TREE_TYPE (decl));
919 else if (GET_CODE (value) == MEM
920 && ((GET_CODE (XEXP (value, 0)) == PLUS
921 && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG
922 && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT)
923 /* This is for variables which are at offset zero from
924 the frame pointer. This happens on the Alpha.
925 Non-frame pointer registers are excluded above. */
926 || (GET_CODE (XEXP (value, 0)) == REG)))
928 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
929 or (MEM (REG...)). We want the value of that CONST_INT
932 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
933 PUT_SDB_SCL (C_AUTO);
935 else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST)
937 /* Handle an obscure case which can arise when optimizing and
938 when there are few available registers. (This is *always*
939 the case for i386/i486 targets). The DECL_RTL looks like
940 (MEM (CONST ...)) even though this variable is a local `auto'
941 or a local `register' variable. In effect, what has happened
942 is that the reload pass has seen that all assignments and
943 references for one such a local variable can be replaced by
944 equivalent assignments and references to some static storage
945 variable, thereby avoiding the need for a register. In such
946 cases we're forced to lie to debuggers and tell them that
947 this variable was itself `static'. */
949 PUT_SDB_VAL (XEXP (XEXP (value, 0), 0));
950 PUT_SDB_SCL (C_STAT);
954 /* It is something we don't know how to represent for SDB. */
962 PUT_SDB_TYPE (plain_type (type));
966 /* Output SDB information for a top-level initialized variable
967 that has been delayed. */
970 sdbout_toplevel_data (decl)
973 tree type = TREE_TYPE (decl);
975 if (DECL_IGNORED_P (decl))
978 if (! (TREE_CODE (decl) == VAR_DECL
979 && GET_CODE (DECL_RTL (decl)) == MEM
980 && DECL_INITIAL (decl)))
983 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
984 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
985 if (TREE_PUBLIC (decl))
991 PUT_SDB_SCL (C_STAT);
993 PUT_SDB_TYPE (plain_type (type));
997 #ifdef SDB_ALLOW_FORWARD_REFERENCES
999 /* Machinery to record and output anonymous types. */
1001 static tree anonymous_types;
1004 sdbout_queue_anonymous_type (type)
1007 anonymous_types = saveable_tree_cons (NULL_TREE, type, anonymous_types);
1011 sdbout_dequeue_anonymous_types ()
1013 register tree types, link;
1015 while (anonymous_types)
1017 types = nreverse (anonymous_types);
1018 anonymous_types = NULL_TREE;
1020 for (link = types; link; link = TREE_CHAIN (link))
1022 register tree type = TREE_VALUE (link);
1024 if (type && ! TREE_ASM_WRITTEN (type))
1025 sdbout_one_type (type);
1032 /* Given a chain of ..._TYPE nodes, all of which have names,
1033 output definitions of those names, as typedefs. */
1036 sdbout_types (types)
1037 register tree types;
1041 for (link = types; link; link = TREE_CHAIN (link))
1042 sdbout_one_type (link);
1044 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1045 sdbout_dequeue_anonymous_types ();
1053 if (type == error_mark_node)
1054 type = integer_type_node;
1055 PUT_SDB_TYPE (plain_type (type));
1058 /* Output types of the fields of type TYPE, if they are structs.
1060 Formerly did not chase through pointer types, since that could be circular.
1061 They must come before TYPE, since forward refs are not allowed.
1062 Now james@bigtex.cactus.org says to try them. */
1065 sdbout_field_types (type)
1069 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
1070 if (TREE_CODE (TREE_TYPE (tail)) == POINTER_TYPE)
1071 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
1073 sdbout_one_type (TREE_TYPE (tail));
1076 /* Use this to put out the top level defined record and union types
1077 for later reference. If this is a struct with a name, then put that
1078 name out. Other unnamed structs will have .xxfake labels generated so
1079 that they may be referred to later.
1080 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1081 It may NOT be called recursively. */
1084 sdbout_one_type (type)
1087 if (current_function_decl != NULL_TREE
1088 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE)
1089 ; /* Don't change section amid function. */
1093 switch (TREE_CODE (type))
1097 case QUAL_UNION_TYPE:
1099 type = TYPE_MAIN_VARIANT (type);
1100 /* Don't output a type twice. */
1101 if (TREE_ASM_WRITTEN (type))
1102 /* James said test TREE_ASM_BEING_WRITTEN here. */
1105 /* Output nothing if type is not yet defined. */
1106 if (TYPE_SIZE (type) == 0)
1109 TREE_ASM_WRITTEN (type) = 1;
1111 /* This is reputed to cause trouble with the following case,
1112 but perhaps checking TYPE_SIZE above will fix it. */
1114 /* Here is a test case:
1120 typedef struct intermediate {
1124 typedef struct badstr {
1129 TREE_ASM_BEING_WRITTEN (type) = 1;
1131 /* This change, which ought to make better output,
1132 used to make the COFF assembler unhappy.
1133 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1134 /* Before really doing anything, output types we want to refer to. */
1135 /* Note that in version 1 the following two lines
1136 are not used if forward references are in use. */
1137 if (TREE_CODE (type) != ENUMERAL_TYPE)
1138 sdbout_field_types (type);
1140 TREE_ASM_WRITTEN (type) = 1;
1144 /* Output a structure type. */
1146 int size = int_size_in_bytes (type);
1149 int i, n_baseclasses = 0;
1151 /* Record the type tag, but not in its permanent place just yet. */
1152 sdbout_record_type_name (type);
1154 PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
1156 switch (TREE_CODE (type))
1159 case QUAL_UNION_TYPE:
1160 PUT_SDB_SCL (C_UNTAG);
1161 PUT_SDB_TYPE (T_UNION);
1166 PUT_SDB_SCL (C_STRTAG);
1167 PUT_SDB_TYPE (T_STRUCT);
1172 PUT_SDB_SCL (C_ENTAG);
1173 PUT_SDB_TYPE (T_ENUM);
1181 PUT_SDB_SIZE (size);
1184 /* Print out the base class information with fields
1185 named after the types they hold. */
1186 if (TYPE_BINFO (type)
1187 && TYPE_BINFO_BASETYPES (type))
1188 n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
1189 for (i = 0; i < n_baseclasses; i++)
1191 tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i);
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_INT_CST_LOW (BINFO_OFFSET (child)));
1211 PUT_SDB_SCL (member_scl);
1212 sdbout_type (BINFO_TYPE (child));
1216 /* output the individual fields */
1218 if (TREE_CODE (type) == ENUMERAL_TYPE)
1219 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1221 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
1222 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (TREE_VALUE (tem)));
1223 PUT_SDB_SCL (C_MOE);
1224 PUT_SDB_TYPE (T_MOE);
1228 else /* record or union type */
1229 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1230 /* Output the name, type, position (in bits), size (in bits)
1233 /* Omit here the nameless fields that are used to skip bits.
1234 Also omit fields with variable size or position.
1235 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1236 if (TREE_CODE (tem) == FIELD_DECL
1237 && DECL_NAME (tem) != 0
1238 && TREE_CODE (DECL_SIZE (tem)) == INTEGER_CST
1239 && TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST)
1244 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem));
1246 if (DECL_BIT_FIELD_TYPE (tem))
1248 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)));
1249 PUT_SDB_SCL (C_FIELD);
1250 sdbout_type (DECL_BIT_FIELD_TYPE (tem));
1251 PUT_SDB_SIZE (TREE_INT_CST_LOW (DECL_SIZE (tem)));
1255 PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))
1257 PUT_SDB_SCL (member_scl);
1258 sdbout_type (TREE_TYPE (tem));
1262 /* output end of a structure,union, or enumeral definition */
1264 PUT_SDB_PLAIN_DEF ("eos");
1265 PUT_SDB_INT_VAL (size);
1266 PUT_SDB_SCL (C_EOS);
1267 PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
1268 PUT_SDB_SIZE (size);
1278 /* The following two functions output definitions of function parameters.
1279 Each parameter gets a definition locating it in the parameter list.
1280 Each parameter that is a register variable gets a second definition
1281 locating it in the register.
1283 Printing or argument lists in gdb uses the definitions that
1284 locate in the parameter list. But reference to the variable in
1285 expressions uses preferentially the definition as a register. */
1287 /* Output definitions, referring to storage in the parmlist,
1288 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1291 sdbout_parms (parms)
1294 for (; parms; parms = TREE_CHAIN (parms))
1295 if (DECL_NAME (parms))
1297 int current_sym_value = 0;
1298 char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1300 if (name == 0 || *name == 0)
1301 name = gen_fake_label ();
1303 /* Perform any necessary register eliminations on the parameter's rtl,
1304 so that the debugging output will be accurate. */
1305 DECL_INCOMING_RTL (parms)
1306 = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
1307 DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX);
1309 if (PARM_PASSED_IN_MEMORY (parms))
1311 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1314 /* ??? Here we assume that the parm address is indexed
1315 off the frame pointer or arg pointer.
1316 If that is not true, we produce meaningless results,
1317 but do not crash. */
1318 if (GET_CODE (addr) == PLUS
1319 && GET_CODE (XEXP (addr, 1)) == CONST_INT)
1320 current_sym_value = INTVAL (XEXP (addr, 1));
1322 current_sym_value = 0;
1324 if (GET_CODE (DECL_RTL (parms)) == REG
1325 && REGNO (DECL_RTL (parms)) >= 0
1326 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1327 type = DECL_ARG_TYPE (parms);
1330 int original_sym_value = current_sym_value;
1332 /* This is the case where the parm is passed as an int or
1333 double and it is converted to a char, short or float
1334 and stored back in the parmlist. In this case, describe
1335 the parm with the variable's declared type, and adjust
1336 the address if the least significant bytes (which we are
1337 using) are not the first ones. */
1338 if (BYTES_BIG_ENDIAN
1339 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1340 current_sym_value +=
1341 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1342 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1344 if (GET_CODE (DECL_RTL (parms)) == MEM
1345 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1346 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1348 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1349 == current_sym_value))
1350 type = TREE_TYPE (parms);
1353 current_sym_value = original_sym_value;
1354 type = DECL_ARG_TYPE (parms);
1359 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
1360 PUT_SDB_SCL (C_ARG);
1361 PUT_SDB_TYPE (plain_type (type));
1364 else if (GET_CODE (DECL_RTL (parms)) == REG)
1367 /* Parm passed in registers and lives in registers or nowhere. */
1369 /* If parm lives in a register, use that register;
1370 pretend the parm was passed there. It would be more consistent
1371 to describe the register where the parm was passed,
1372 but in practice that register usually holds something else. */
1373 if (REGNO (DECL_RTL (parms)) >= 0
1374 && 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)) >= 0
1437 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
1438 && PARM_PASSED_IN_MEMORY (parms))
1440 if (name == 0 || *name == 0)
1441 name = gen_fake_label ();
1443 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
1444 PUT_SDB_SCL (C_REG);
1445 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1448 /* Report parms that live in memory but not where they were passed. */
1449 else if (GET_CODE (DECL_RTL (parms)) == MEM
1450 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1451 && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
1452 && PARM_PASSED_IN_MEMORY (parms)
1453 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
1455 #if 0 /* ??? It is not clear yet what should replace this. */
1456 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
1457 /* A parm declared char is really passed as an int,
1458 so it occupies the least significant bytes.
1459 On a big-endian machine those are not the low-numbered ones. */
1460 if (BYTES_BIG_ENDIAN
1462 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1463 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1464 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1465 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
1468 if (name == 0 || *name == 0)
1469 name = gen_fake_label ();
1471 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1472 (XEXP (DECL_RTL (parms), 0)));
1473 PUT_SDB_SCL (C_AUTO);
1474 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1481 /* Describe the beginning of an internal block within a function.
1482 Also output descriptions of variables defined in this block.
1484 N is the number of the block, by order of beginning, counting from 1,
1485 and not counting the outermost (function top-level) block.
1486 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1487 if the count starts at 0 for the outermost one. */
1490 sdbout_begin_block (file, line, n)
1495 tree decl = current_function_decl;
1496 MAKE_LINE_SAFE (line);
1498 /* The SCO compiler does not emit a separate block for the function level
1499 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1500 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1501 #ifndef MIPS_DEBUGGING_INFO
1504 PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
1508 /* Include the outermost BLOCK's variables in block 1. */
1509 next_block_number = 0;
1511 sdbout_block (DECL_INITIAL (decl));
1513 /* If -g1, suppress all the internal symbols of functions
1514 except for arguments. */
1515 if (debug_info_level != DINFO_LEVEL_TERSE)
1517 next_block_number = 0;
1519 sdbout_block (DECL_INITIAL (decl));
1522 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1523 sdbout_dequeue_anonymous_types ();
1527 /* Describe the end line-number of an internal block within a function. */
1530 sdbout_end_block (file, line, n)
1535 MAKE_LINE_SAFE (line);
1537 /* The SCO compiler does not emit a separate block for the function level
1538 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1539 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1540 #ifndef MIPS_DEBUGGING_INFO
1543 PUT_SDB_BLOCK_END (line - sdb_begin_function_line);
1546 /* Output sdb info for the current function name.
1547 Called from assemble_start_function. */
1550 sdbout_mark_begin_function ()
1552 sdbout_symbol (current_function_decl, 0);
1555 /* Called at beginning of function body (after prologue).
1556 Record the function's starting line number, so we can output
1557 relative line numbers for the other lines.
1558 Describe beginning of outermost block.
1559 Also describe the parameter list. */
1562 sdbout_begin_function (line)
1565 sdb_begin_function_line = line - 1;
1566 PUT_SDB_FUNCTION_START (line);
1567 sdbout_parms (DECL_ARGUMENTS (current_function_decl));
1568 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
1571 /* Called at end of function (before epilogue).
1572 Describe end of outermost block. */
1575 sdbout_end_function (line)
1578 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1579 sdbout_dequeue_anonymous_types ();
1582 MAKE_LINE_SAFE (line);
1583 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
1585 /* Indicate we are between functions, for line-number output. */
1586 sdb_begin_function_line = -1;
1589 /* Output sdb info for the absolute end of a function.
1590 Called after the epilogue is output. */
1593 sdbout_end_epilogue ()
1595 char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
1596 PUT_SDB_EPILOGUE_END (name);
1599 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1606 PUT_SDB_DEF (LABEL_NAME (insn));
1608 PUT_SDB_SCL (C_LABEL);
1609 PUT_SDB_TYPE (T_NULL);
1613 /* Change to reading from a new source file. */
1616 sdbout_start_new_source_file (filename)
1619 #ifdef MIPS_DEBUGGING_INFO
1620 struct sdb_file *n = (struct sdb_file *) xmalloc (sizeof *n);
1622 n->next = current_file;
1625 PUT_SDB_SRC_FILE (filename);
1629 /* Revert to reading a previous source file. */
1632 sdbout_resume_previous_source_file ()
1634 #ifdef MIPS_DEBUGGING_INFO
1635 struct sdb_file *next;
1637 next = current_file->next;
1638 free (current_file);
1639 current_file = next;
1640 PUT_SDB_SRC_FILE (current_file->name);
1644 #endif /* SDB_DEBUGGING_INFO */