1 /* Output sdb-format symbol table information from GNU compiler.
2 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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 #include "coretypes.h"
52 static GTY(()) tree anonymous_types;
54 /* Counter for sdbout_source_line. */
56 static GTY(()) int sdbout_source_line_counter;
58 /* Counter to generate unique "names" for nameless struct members. */
60 static GTY(()) int unnamed_struct_number;
62 #ifdef SDB_DEBUGGING_INFO
67 #include "insn-config.h"
73 #include "langhooks.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;
100 extern FILE *asm_out_file;
102 extern tree current_function_decl;
106 static void sdbout_init (const char *);
107 static void sdbout_finish (const char *);
108 static void sdbout_start_source_file (unsigned int, const char *);
109 static void sdbout_end_source_file (unsigned int);
110 static void sdbout_begin_block (unsigned int, unsigned int);
111 static void sdbout_end_block (unsigned int, unsigned int);
112 static void sdbout_source_line (unsigned int, const char *);
113 static void sdbout_end_epilogue (unsigned int, const char *);
114 static void sdbout_global_decl (tree);
115 #ifndef MIPS_DEBUGGING_INFO
116 static void sdbout_begin_prologue (unsigned int, const char *);
118 static void sdbout_end_prologue (unsigned int, const char *);
119 static void sdbout_begin_function (tree);
120 static void sdbout_end_function (unsigned int);
121 static void sdbout_toplevel_data (tree);
122 static void sdbout_label (rtx);
123 static char *gen_fake_label (void);
124 static int plain_type (tree);
125 static int template_name_p (tree);
126 static void sdbout_record_type_name (tree);
127 static int plain_type_1 (tree, int);
128 static void sdbout_block (tree);
129 static void sdbout_syms (tree);
130 #ifdef SDB_ALLOW_FORWARD_REFERENCES
131 static void sdbout_queue_anonymous_type (tree);
132 static void sdbout_dequeue_anonymous_types (void);
134 static void sdbout_type (tree);
135 static void sdbout_field_types (tree);
136 static void sdbout_one_type (tree);
137 static void sdbout_parms (tree);
138 static void sdbout_reg_parms (tree);
139 static void sdbout_global_decl (tree);
141 /* Random macros describing parts of SDB data. */
143 /* Default value of delimiter is ";". */
145 #define SDB_DELIM ";"
148 /* Maximum number of dimensions the assembler will allow. */
150 #define SDB_MAX_DIM 4
154 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
157 #ifndef PUT_SDB_INT_VAL
158 #define PUT_SDB_INT_VAL(a) \
160 fprintf (asm_out_file, "\t.val\t" HOST_WIDE_INT_PRINT_DEC "%s", \
161 (HOST_WIDE_INT) (a), SDB_DELIM); \
167 #define PUT_SDB_VAL(a) \
168 ( fputs ("\t.val\t", asm_out_file), \
169 output_addr_const (asm_out_file, (a)), \
170 fprintf (asm_out_file, SDB_DELIM))
174 #define PUT_SDB_DEF(a) \
175 do { fprintf (asm_out_file, "\t.def\t"); \
176 assemble_name (asm_out_file, a); \
177 fprintf (asm_out_file, SDB_DELIM); } while (0)
180 #ifndef PUT_SDB_PLAIN_DEF
181 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
184 #ifndef PUT_SDB_ENDEF
185 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
189 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
193 #define PUT_SDB_SIZE(a) \
195 fprintf (asm_out_file, "\t.size\t" HOST_WIDE_INT_PRINT_DEC "%s", \
196 (HOST_WIDE_INT) (a), SDB_DELIM); \
200 #ifndef PUT_SDB_START_DIM
201 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
204 #ifndef PUT_SDB_NEXT_DIM
205 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
208 #ifndef PUT_SDB_LAST_DIM
209 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
213 #define PUT_SDB_TAG(a) \
214 do { fprintf (asm_out_file, "\t.tag\t"); \
215 assemble_name (asm_out_file, a); \
216 fprintf (asm_out_file, SDB_DELIM); } while (0)
219 #ifndef PUT_SDB_BLOCK_START
220 #define PUT_SDB_BLOCK_START(LINE) \
221 fprintf (asm_out_file, \
222 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
223 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
226 #ifndef PUT_SDB_BLOCK_END
227 #define PUT_SDB_BLOCK_END(LINE) \
228 fprintf (asm_out_file, \
229 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
230 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
233 #ifndef PUT_SDB_FUNCTION_START
234 #define PUT_SDB_FUNCTION_START(LINE) \
235 fprintf (asm_out_file, \
236 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
237 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
240 #ifndef PUT_SDB_FUNCTION_END
241 #define PUT_SDB_FUNCTION_END(LINE) \
242 fprintf (asm_out_file, \
243 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
244 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
247 #ifndef SDB_GENERATE_FAKE
248 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
249 sprintf ((BUFFER), ".%dfake", (NUMBER));
252 /* Return the sdb tag identifier string for TYPE
253 if TYPE has already been defined; otherwise return a null pointer. */
255 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
257 /* Set the sdb tag identifier string for TYPE to NAME. */
259 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
260 TYPE_SYMTAB_POINTER (TYPE) = (char *)(NAME)
262 /* Return the name (a string) of the struct, union or enum tag
263 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
265 #define TAG_NAME(link) \
266 (((link) && TREE_PURPOSE ((link)) \
267 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
268 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
270 /* Ensure we don't output a negative line number. */
271 #define MAKE_LINE_SAFE(line) \
272 if ((int) line <= sdb_begin_function_line) \
273 line = sdb_begin_function_line + 1
275 /* Perform linker optimization of merging header file definitions together
276 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a
277 post 960826 version of GAS. Nothing breaks with earlier versions of GAS,
278 the optimization just won't be done. The native assembler already has the
279 necessary support. */
281 #ifdef MIPS_DEBUGGING_INFO
283 #ifndef PUT_SDB_SRC_FILE
284 #define PUT_SDB_SRC_FILE(FILENAME) \
285 output_file_directive (asm_out_file, (FILENAME))
288 /* ECOFF linkers have an optimization that does the same kind of thing as
289 N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the
290 executable. To achieve this, GCC must output a .file for each file
293 /* This is a stack of input files. */
297 struct sdb_file *next;
301 /* This is the top of the stack. */
303 static struct sdb_file *current_file;
305 #endif /* MIPS_DEBUGGING_INFO */
307 /* The debug hooks structure. */
308 const struct gcc_debug_hooks sdb_debug_hooks =
310 sdbout_init, /* init */
311 sdbout_finish, /* finish */
312 debug_nothing_int_charstar, /* define */
313 debug_nothing_int_charstar, /* undef */
314 sdbout_start_source_file, /* start_source_file */
315 sdbout_end_source_file, /* end_source_file */
316 sdbout_begin_block, /* begin_block */
317 sdbout_end_block, /* end_block */
318 debug_true_tree, /* ignore_block */
319 sdbout_source_line, /* source_line */
320 #ifdef MIPS_DEBUGGING_INFO
321 /* Defer on MIPS systems so that parameter descriptions follow
323 debug_nothing_int_charstar, /* begin_prologue */
324 sdbout_end_prologue, /* end_prologue */
326 sdbout_begin_prologue, /* begin_prologue */
327 debug_nothing_int_charstar, /* end_prologue */
329 sdbout_end_epilogue, /* end_epilogue */
330 sdbout_begin_function, /* begin_function */
331 sdbout_end_function, /* end_function */
332 debug_nothing_tree, /* function_decl */
333 sdbout_global_decl, /* global_decl */
334 debug_nothing_tree_tree, /* imported_module_or_decl */
335 debug_nothing_tree, /* deferred_inline_function */
336 debug_nothing_tree, /* outlining_inline_function */
337 sdbout_label, /* label */
338 debug_nothing_int /* handle_pch */
341 /* Return a unique string to name an anonymous type. */
344 gen_fake_label (void)
348 SDB_GENERATE_FAKE (label, unnamed_struct_number);
349 unnamed_struct_number++;
350 labelstr = xstrdup (label);
354 /* Return the number which describes TYPE for SDB.
355 For pointers, etc., this function is recursive.
356 Each record, union or enumeral type must already have had a
357 tag number output. */
359 /* The number is given by d6d5d4d3d2d1bbbb
360 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
361 Thus, char *foo () has bbbb=T_CHAR
364 N_BTMASK= 017 1111 basic type field.
365 N_TSHIFT= 2 derived type shift
366 N_BTSHFT= 4 Basic type shift */
368 /* Produce the number that describes a pointer, function or array type.
369 PREV is the number describing the target, value or element type.
370 DT_type describes how to transform that type. */
371 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
372 ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \
373 | ((int) DT_type << (int) N_BTSHFT) \
374 | ((PREV) & (int) N_BTMASK))
376 /* Number of elements used in sdb_dims. */
377 static int sdb_n_dims = 0;
379 /* Table of array dimensions of current type. */
380 static int sdb_dims[SDB_MAX_DIM];
382 /* Size of outermost array currently being processed. */
383 static int sdb_type_size = -1;
386 plain_type (tree type)
388 int val = plain_type_1 (type, 0);
390 /* If we have already saved up some array dimensions, print them now. */
395 for (i = sdb_n_dims - 1; i > 0; i--)
396 PUT_SDB_NEXT_DIM (sdb_dims[i]);
397 PUT_SDB_LAST_DIM (sdb_dims[0]);
400 sdb_type_size = int_size_in_bytes (type);
401 /* Don't kill sdb if type is not laid out or has variable size. */
402 if (sdb_type_size < 0)
405 /* If we have computed the size of an array containing this type,
407 if (sdb_type_size >= 0)
409 PUT_SDB_SIZE (sdb_type_size);
416 template_name_p (tree name)
418 const char *ptr = IDENTIFIER_POINTER (name);
419 while (*ptr && *ptr != '<')
426 sdbout_record_type_name (tree type)
428 const char *name = 0;
431 if (KNOWN_TYPE_TAG (type))
434 if (TYPE_NAME (type) != 0)
438 /* Find the IDENTIFIER_NODE for the type name. */
439 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
440 t = TYPE_NAME (type);
441 else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
443 t = DECL_NAME (TYPE_NAME (type));
444 /* The DECL_NAME for templates includes "<>", which breaks
445 most assemblers. Use its assembler name instead, which
446 has been mangled into being safe. */
447 if (t && template_name_p (t))
448 t = DECL_ASSEMBLER_NAME (TYPE_NAME (type));
451 /* Now get the name as a string, or invent one. */
453 name = IDENTIFIER_POINTER (t);
456 no_name = (name == 0 || *name == 0);
458 name = gen_fake_label ();
460 SET_KNOWN_TYPE_TAG (type, name);
461 #ifdef SDB_ALLOW_FORWARD_REFERENCES
463 sdbout_queue_anonymous_type (type);
467 /* Return the .type value for type TYPE.
469 LEVEL indicates how many levels deep we have recursed into the type.
470 The SDB debug format can only represent 6 derived levels of types.
471 After that, we must output inaccurate debug info. We deliberately
472 stop before the 7th level, so that ADA recursive types will not give an
476 plain_type_1 (tree type, int level)
479 type = void_type_node;
480 else if (type == error_mark_node)
481 type = integer_type_node;
483 type = TYPE_MAIN_VARIANT (type);
485 switch (TREE_CODE (type))
492 int size = int_size_in_bytes (type) * BITS_PER_UNIT;
494 /* Carefully distinguish all the standard types of C,
495 without messing up if the language is not C.
496 Note that we check only for the names that contain spaces;
497 other names might occur by coincidence in other languages. */
498 if (TYPE_NAME (type) != 0
499 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
500 && DECL_NAME (TYPE_NAME (type)) != 0
501 && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE)
503 const char *const name
504 = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
506 if (!strcmp (name, "char"))
508 if (!strcmp (name, "unsigned char"))
510 if (!strcmp (name, "signed char"))
512 if (!strcmp (name, "int"))
514 if (!strcmp (name, "unsigned int"))
516 if (!strcmp (name, "short int"))
518 if (!strcmp (name, "short unsigned int"))
520 if (!strcmp (name, "long int"))
522 if (!strcmp (name, "long unsigned int"))
526 if (size == INT_TYPE_SIZE)
527 return (TREE_UNSIGNED (type) ? T_UINT : T_INT);
528 if (size == CHAR_TYPE_SIZE)
529 return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
530 if (size == SHORT_TYPE_SIZE)
531 return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT);
532 if (size == LONG_TYPE_SIZE)
533 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
534 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */
535 return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG);
541 int precision = TYPE_PRECISION (type);
542 if (precision == FLOAT_TYPE_SIZE)
544 if (precision == DOUBLE_TYPE_SIZE)
546 #ifdef EXTENDED_SDB_BASIC_TYPES
547 if (precision == LONG_DOUBLE_TYPE_SIZE)
550 if (precision == LONG_DOUBLE_TYPE_SIZE)
551 return T_DOUBLE; /* better than nothing */
562 m = plain_type_1 (TREE_TYPE (type), level+1);
563 if (sdb_n_dims < SDB_MAX_DIM)
564 sdb_dims[sdb_n_dims++]
565 = (TYPE_DOMAIN (type)
566 && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0
567 && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0
568 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0)
569 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0)
570 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0)
571 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1)
574 return PUSH_DERIVED_LEVEL (DT_ARY, m);
579 case QUAL_UNION_TYPE:
583 #ifdef SDB_ALLOW_FORWARD_REFERENCES
584 sdbout_record_type_name (type);
586 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
587 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
588 #ifdef SDB_ALLOW_FORWARD_REFERENCES
589 || TYPE_MODE (type) != VOIDmode
594 /* Output the referenced structure tag name
595 only if the .def has already been finished.
596 At least on 386, the Unix assembler
597 cannot handle forward references to tags. */
598 /* But the 88100, it requires them, sigh... */
599 /* And the MIPS requires unknown refs as well... */
600 tag = KNOWN_TYPE_TAG (type);
602 /* These 3 lines used to follow the close brace.
603 However, a size of 0 without a tag implies a tag of 0,
604 so if we don't know a tag, we can't mention the size. */
605 sdb_type_size = int_size_in_bytes (type);
606 if (sdb_type_size < 0)
609 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
610 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION
611 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION
621 m = plain_type_1 (TREE_TYPE (type), level+1);
622 return PUSH_DERIVED_LEVEL (DT_PTR, m);
631 m = plain_type_1 (TREE_TYPE (type), level+1);
632 return PUSH_DERIVED_LEVEL (DT_FCN, m);
639 /* Output the symbols defined in block number DO_BLOCK.
641 This function works by walking the tree structure of blocks,
642 counting blocks until it finds the desired block. */
644 static int do_block = 0;
647 sdbout_block (tree block)
651 /* Ignore blocks never expanded or otherwise marked as real. */
652 if (TREE_USED (block))
654 /* When we reach the specified block, output its symbols. */
655 if (BLOCK_NUMBER (block) == do_block)
656 sdbout_syms (BLOCK_VARS (block));
658 /* If we are past the specified block, stop the scan. */
659 if (BLOCK_NUMBER (block) > do_block)
662 /* Scan the blocks within this block. */
663 sdbout_block (BLOCK_SUBBLOCKS (block));
666 block = BLOCK_CHAIN (block);
670 /* Call sdbout_symbol on each decl in the chain SYMS. */
673 sdbout_syms (tree syms)
677 if (TREE_CODE (syms) != LABEL_DECL)
678 sdbout_symbol (syms, 1);
679 syms = TREE_CHAIN (syms);
683 /* Output SDB information for a symbol described by DECL.
684 LOCAL is nonzero if the symbol is not file-scope. */
687 sdbout_symbol (tree decl, int local)
689 tree type = TREE_TYPE (decl);
690 tree context = NULL_TREE;
695 sdbout_one_type (type);
697 switch (TREE_CODE (decl))
700 /* Enum values are defined by defining the enum type. */
704 /* Don't mention a nested function under its parent. */
705 context = decl_function_context (decl);
706 if (context == current_function_decl)
708 /* Check DECL_INITIAL to distinguish declarations from definitions.
709 Don't output debug info here for declarations; they will have
710 a DECL_INITIAL value of 0. */
711 if (! DECL_INITIAL (decl))
713 if (GET_CODE (DECL_RTL (decl)) != MEM
714 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
716 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
717 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
718 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
722 /* Done with tagged types. */
723 if (DECL_NAME (decl) == 0)
725 if (DECL_IGNORED_P (decl))
728 /* Output typedef name. */
729 if (template_name_p (DECL_NAME (decl)))
730 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
732 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
733 PUT_SDB_SCL (C_TPDEF);
737 /* Parm decls go in their own separate chains
738 and are output by sdbout_reg_parms and sdbout_parms. */
742 /* Don't mention a variable that is external.
743 Let the file that defines it describe it. */
744 if (DECL_EXTERNAL (decl))
747 /* Ignore __FUNCTION__, etc. */
748 if (DECL_IGNORED_P (decl))
751 /* If there was an error in the declaration, don't dump core
752 if there is no RTL associated with the variable doesn't
754 if (!DECL_RTL_SET_P (decl))
758 eliminate_regs (DECL_RTL (decl), 0, NULL_RTX));
759 #ifdef LEAF_REG_REMAP
760 if (current_function_uses_only_leaf_regs)
761 leaf_renumber_regs_insn (DECL_RTL (decl));
763 value = DECL_RTL (decl);
765 /* Don't mention a variable at all
766 if it was completely optimized into nothingness.
768 If DECL was from an inline function, then its rtl
769 is not identically the rtl that was used in this
770 particular compilation. */
771 if (GET_CODE (value) == REG)
773 regno = REGNO (value);
774 if (regno >= FIRST_PSEUDO_REGISTER)
777 else if (GET_CODE (value) == SUBREG)
779 while (GET_CODE (value) == SUBREG)
780 value = SUBREG_REG (value);
781 if (GET_CODE (value) == REG)
783 if (REGNO (value) >= FIRST_PSEUDO_REGISTER)
786 regno = REGNO (alter_subreg (&value));
787 SET_DECL_RTL (decl, value);
789 /* Don't output anything if an auto variable
790 gets RTL that is static.
791 GAS version 2.2 can't handle such output. */
792 else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0))
793 && ! TREE_STATIC (decl))
796 /* Emit any structure, union, or enum type that has not been output.
797 This occurs for tag-less structs (et al) used to declare variables
799 if (TREE_CODE (type) == ENUMERAL_TYPE
800 || TREE_CODE (type) == RECORD_TYPE
801 || TREE_CODE (type) == UNION_TYPE
802 || TREE_CODE (type) == QUAL_UNION_TYPE)
804 if (COMPLETE_TYPE_P (type) /* not a forward reference */
805 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
806 sdbout_one_type (type);
809 /* Defer SDB information for top-level initialized variables! */
811 && GET_CODE (value) == MEM
812 && DECL_INITIAL (decl))
815 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
816 For now, avoid crashing. */
817 if (DECL_NAME (decl) == NULL_TREE)
820 /* Record the name for, starting a symtab entry. */
822 name = IDENTIFIER_POINTER (DECL_NAME (decl));
824 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
826 if (GET_CODE (value) == MEM
827 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
830 if (TREE_PUBLIC (decl))
832 PUT_SDB_VAL (XEXP (value, 0));
837 PUT_SDB_VAL (XEXP (value, 0));
838 PUT_SDB_SCL (C_STAT);
844 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
847 else if (GET_CODE (value) == MEM
848 && (GET_CODE (XEXP (value, 0)) == MEM
849 || (GET_CODE (XEXP (value, 0)) == REG
850 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM
851 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
852 /* If the value is indirect by memory or by a register
853 that isn't the frame pointer
854 then it means the object is variable-sized and address through
855 that register or stack slot. COFF has no way to represent this
856 so all we can do is output the variable as a pointer. */
859 if (GET_CODE (XEXP (value, 0)) == REG)
861 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
866 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
868 We want the value of that CONST_INT. */
869 /* Encore compiler hates a newline in a macro arg, it seems. */
870 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
871 (XEXP (XEXP (value, 0), 0)));
872 PUT_SDB_SCL (C_AUTO);
875 /* Effectively do build_pointer_type, but don't cache this type,
876 since it might be temporary whereas the type it points to
877 might have been saved for inlining. */
878 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
879 type = make_node (POINTER_TYPE);
880 TREE_TYPE (type) = TREE_TYPE (decl);
882 else if (GET_CODE (value) == MEM
883 && ((GET_CODE (XEXP (value, 0)) == PLUS
884 && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG
885 && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT)
886 /* This is for variables which are at offset zero from
887 the frame pointer. This happens on the Alpha.
888 Non-frame pointer registers are excluded above. */
889 || (GET_CODE (XEXP (value, 0)) == REG)))
891 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
892 or (MEM (REG...)). We want the value of that CONST_INT
895 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
896 PUT_SDB_SCL (C_AUTO);
900 /* It is something we don't know how to represent for SDB. */
908 PUT_SDB_TYPE (plain_type (type));
912 /* Output SDB information for a top-level initialized variable
913 that has been delayed. */
916 sdbout_toplevel_data (tree decl)
918 tree type = TREE_TYPE (decl);
920 if (DECL_IGNORED_P (decl))
923 if (! (TREE_CODE (decl) == VAR_DECL
924 && GET_CODE (DECL_RTL (decl)) == MEM
925 && DECL_INITIAL (decl)))
928 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
929 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
930 if (TREE_PUBLIC (decl))
936 PUT_SDB_SCL (C_STAT);
938 PUT_SDB_TYPE (plain_type (type));
942 #ifdef SDB_ALLOW_FORWARD_REFERENCES
944 /* Machinery to record and output anonymous types. */
947 sdbout_queue_anonymous_type (tree type)
949 anonymous_types = tree_cons (NULL_TREE, type, anonymous_types);
953 sdbout_dequeue_anonymous_types (void)
957 while (anonymous_types)
959 types = nreverse (anonymous_types);
960 anonymous_types = NULL_TREE;
962 for (link = types; link; link = TREE_CHAIN (link))
964 tree type = TREE_VALUE (link);
966 if (type && ! TREE_ASM_WRITTEN (type))
967 sdbout_one_type (type);
974 /* Given a chain of ..._TYPE nodes, all of which have names,
975 output definitions of those names, as typedefs. */
978 sdbout_types (tree types)
982 for (link = types; link; link = TREE_CHAIN (link))
983 sdbout_one_type (link);
985 #ifdef SDB_ALLOW_FORWARD_REFERENCES
986 sdbout_dequeue_anonymous_types ();
991 sdbout_type (tree type)
993 if (type == error_mark_node)
994 type = integer_type_node;
995 PUT_SDB_TYPE (plain_type (type));
998 /* Output types of the fields of type TYPE, if they are structs.
1000 Formerly did not chase through pointer types, since that could be circular.
1001 They must come before TYPE, since forward refs are not allowed.
1002 Now james@bigtex.cactus.org says to try them. */
1005 sdbout_field_types (tree type)
1009 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
1010 /* This condition should match the one for emitting the actual
1012 if (TREE_CODE (tail) == FIELD_DECL
1015 && host_integerp (DECL_SIZE (tail), 1)
1016 && host_integerp (bit_position (tail), 0))
1018 if (POINTER_TYPE_P (TREE_TYPE (tail)))
1019 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
1021 sdbout_one_type (TREE_TYPE (tail));
1025 /* Use this to put out the top level defined record and union types
1026 for later reference. If this is a struct with a name, then put that
1027 name out. Other unnamed structs will have .xxfake labels generated so
1028 that they may be referred to later.
1029 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1030 It may NOT be called recursively. */
1033 sdbout_one_type (tree type)
1035 if (current_function_decl != NULL_TREE
1036 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE)
1037 ; /* Don't change section amid function. */
1041 switch (TREE_CODE (type))
1045 case QUAL_UNION_TYPE:
1047 type = TYPE_MAIN_VARIANT (type);
1048 /* Don't output a type twice. */
1049 if (TREE_ASM_WRITTEN (type))
1050 /* James said test TREE_ASM_BEING_WRITTEN here. */
1053 /* Output nothing if type is not yet defined. */
1054 if (!COMPLETE_TYPE_P (type))
1057 TREE_ASM_WRITTEN (type) = 1;
1059 /* This is reputed to cause trouble with the following case,
1060 but perhaps checking TYPE_SIZE above will fix it. */
1062 /* Here is a testcase:
1068 typedef struct intermediate {
1072 typedef struct badstr {
1076 /* This change, which ought to make better output,
1077 used to make the COFF assembler unhappy.
1078 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1079 /* Before really doing anything, output types we want to refer to. */
1080 /* Note that in version 1 the following two lines
1081 are not used if forward references are in use. */
1082 if (TREE_CODE (type) != ENUMERAL_TYPE)
1083 sdbout_field_types (type);
1085 /* Output a structure type. */
1087 int size = int_size_in_bytes (type);
1090 int i, n_baseclasses = 0;
1092 /* Record the type tag, but not in its permanent place just yet. */
1093 sdbout_record_type_name (type);
1095 PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
1097 switch (TREE_CODE (type))
1100 case QUAL_UNION_TYPE:
1101 PUT_SDB_SCL (C_UNTAG);
1102 PUT_SDB_TYPE (T_UNION);
1107 PUT_SDB_SCL (C_STRTAG);
1108 PUT_SDB_TYPE (T_STRUCT);
1113 PUT_SDB_SCL (C_ENTAG);
1114 PUT_SDB_TYPE (T_ENUM);
1122 PUT_SDB_SIZE (size);
1125 /* Print out the base class information with fields
1126 named after the types they hold. */
1127 /* This is only relevant to aggregate types. TYPE_BINFO is used
1128 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1130 if (TREE_CODE (type) != ENUMERAL_TYPE)
1132 if (TYPE_BINFO (type)
1133 && TYPE_BINFO_BASETYPES (type))
1134 n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
1135 for (i = 0; i < n_baseclasses; i++)
1137 tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)),
1139 tree child_type = BINFO_TYPE (child);
1140 tree child_type_name;
1141 if (TYPE_NAME (child_type) == 0)
1143 if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE)
1144 child_type_name = TYPE_NAME (child_type);
1145 else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL)
1147 child_type_name = DECL_NAME (TYPE_NAME (child_type));
1148 if (child_type_name && template_name_p (child_type_name))
1150 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type));
1155 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name));
1156 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0));
1157 PUT_SDB_SCL (member_scl);
1158 sdbout_type (BINFO_TYPE (child));
1163 /* Output the individual fields. */
1165 if (TREE_CODE (type) == ENUMERAL_TYPE)
1167 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1168 if (host_integerp (TREE_VALUE (tem), 0))
1170 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
1171 PUT_SDB_INT_VAL (tree_low_cst (TREE_VALUE (tem), 0));
1172 PUT_SDB_SCL (C_MOE);
1173 PUT_SDB_TYPE (T_MOE);
1177 else /* record or union type */
1178 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1179 /* Output the name, type, position (in bits), size (in bits)
1182 /* Omit here the nameless fields that are used to skip bits.
1183 Also omit fields with variable size or position.
1184 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1185 if (TREE_CODE (tem) == FIELD_DECL
1188 && host_integerp (DECL_SIZE (tem), 1)
1189 && host_integerp (bit_position (tem), 0))
1193 name = IDENTIFIER_POINTER (DECL_NAME (tem));
1195 if (DECL_BIT_FIELD_TYPE (tem))
1197 PUT_SDB_INT_VAL (int_bit_position (tem));
1198 PUT_SDB_SCL (C_FIELD);
1199 sdbout_type (DECL_BIT_FIELD_TYPE (tem));
1200 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1));
1204 PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT);
1205 PUT_SDB_SCL (member_scl);
1206 sdbout_type (TREE_TYPE (tem));
1210 /* Output end of a structure,union, or enumeral definition. */
1212 PUT_SDB_PLAIN_DEF ("eos");
1213 PUT_SDB_INT_VAL (size);
1214 PUT_SDB_SCL (C_EOS);
1215 PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
1216 PUT_SDB_SIZE (size);
1226 /* The following two functions output definitions of function parameters.
1227 Each parameter gets a definition locating it in the parameter list.
1228 Each parameter that is a register variable gets a second definition
1229 locating it in the register.
1231 Printing or argument lists in gdb uses the definitions that
1232 locate in the parameter list. But reference to the variable in
1233 expressions uses preferentially the definition as a register. */
1235 /* Output definitions, referring to storage in the parmlist,
1236 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1239 sdbout_parms (tree parms)
1241 for (; parms; parms = TREE_CHAIN (parms))
1242 if (DECL_NAME (parms))
1244 int current_sym_value = 0;
1245 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1247 if (name == 0 || *name == 0)
1248 name = gen_fake_label ();
1250 /* Perform any necessary register eliminations on the parameter's rtl,
1251 so that the debugging output will be accurate. */
1252 DECL_INCOMING_RTL (parms)
1253 = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
1254 SET_DECL_RTL (parms,
1255 eliminate_regs (DECL_RTL (parms), 0, NULL_RTX));
1257 if (PARM_PASSED_IN_MEMORY (parms))
1259 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1262 /* ??? Here we assume that the parm address is indexed
1263 off the frame pointer or arg pointer.
1264 If that is not true, we produce meaningless results,
1265 but do not crash. */
1266 if (GET_CODE (addr) == PLUS
1267 && GET_CODE (XEXP (addr, 1)) == CONST_INT)
1268 current_sym_value = INTVAL (XEXP (addr, 1));
1270 current_sym_value = 0;
1272 if (GET_CODE (DECL_RTL (parms)) == REG
1273 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1274 type = DECL_ARG_TYPE (parms);
1277 int original_sym_value = current_sym_value;
1279 /* This is the case where the parm is passed as an int or
1280 double and it is converted to a char, short or float
1281 and stored back in the parmlist. In this case, describe
1282 the parm with the variable's declared type, and adjust
1283 the address if the least significant bytes (which we are
1284 using) are not the first ones. */
1285 if (BYTES_BIG_ENDIAN
1286 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1287 current_sym_value +=
1288 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1289 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1291 if (GET_CODE (DECL_RTL (parms)) == MEM
1292 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1293 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1295 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1296 == current_sym_value))
1297 type = TREE_TYPE (parms);
1300 current_sym_value = original_sym_value;
1301 type = DECL_ARG_TYPE (parms);
1306 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
1307 PUT_SDB_SCL (C_ARG);
1308 PUT_SDB_TYPE (plain_type (type));
1311 else if (GET_CODE (DECL_RTL (parms)) == REG)
1314 /* Parm passed in registers and lives in registers or nowhere. */
1316 /* If parm lives in a register, use that register;
1317 pretend the parm was passed there. It would be more consistent
1318 to describe the register where the parm was passed,
1319 but in practice that register usually holds something else. */
1320 if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1321 best_rtl = DECL_RTL (parms);
1322 /* If the parm lives nowhere,
1323 use the register where it was passed. */
1325 best_rtl = DECL_INCOMING_RTL (parms);
1328 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl)));
1329 PUT_SDB_SCL (C_REGPARM);
1330 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1333 else if (GET_CODE (DECL_RTL (parms)) == MEM
1334 && XEXP (DECL_RTL (parms), 0) != const0_rtx)
1336 /* Parm was passed in registers but lives on the stack. */
1338 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1339 in which case we want the value of that CONST_INT,
1340 or (MEM (REG ...)) or (MEM (MEM ...)),
1341 in which case we use a value of zero. */
1342 if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
1343 || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
1344 current_sym_value = 0;
1346 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
1348 /* Again, this assumes the offset is based on the arg pointer. */
1350 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value,
1351 XEXP (DECL_RTL (parms), 0)));
1352 PUT_SDB_SCL (C_ARG);
1353 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1359 /* Output definitions for the places where parms live during the function,
1360 when different from where they were passed, when the parms were passed
1363 It is not useful to do this for parms passed in registers
1364 that live during the function in different registers, because it is
1365 impossible to look in the passed register for the passed value,
1366 so we use the within-the-function register to begin with.
1368 PARMS is a chain of PARM_DECL nodes. */
1371 sdbout_reg_parms (tree parms)
1373 for (; parms; parms = TREE_CHAIN (parms))
1374 if (DECL_NAME (parms))
1376 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1378 /* Report parms that live in registers during the function
1379 but were passed in memory. */
1380 if (GET_CODE (DECL_RTL (parms)) == REG
1381 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
1382 && PARM_PASSED_IN_MEMORY (parms))
1384 if (name == 0 || *name == 0)
1385 name = gen_fake_label ();
1387 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
1388 PUT_SDB_SCL (C_REG);
1389 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1392 /* Report parms that live in memory but not where they were passed. */
1393 else if (GET_CODE (DECL_RTL (parms)) == MEM
1394 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1395 && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
1396 && PARM_PASSED_IN_MEMORY (parms)
1397 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
1399 #if 0 /* ??? It is not clear yet what should replace this. */
1400 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
1401 /* A parm declared char is really passed as an int,
1402 so it occupies the least significant bytes.
1403 On a big-endian machine those are not the low-numbered ones. */
1404 if (BYTES_BIG_ENDIAN
1406 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1407 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1408 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1409 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
1412 if (name == 0 || *name == 0)
1413 name = gen_fake_label ();
1415 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1416 (XEXP (DECL_RTL (parms), 0)));
1417 PUT_SDB_SCL (C_AUTO);
1418 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1425 /* Output debug information for a global DECL. Called from toplev.c
1426 after compilation proper has finished. */
1429 sdbout_global_decl (tree decl)
1431 if (TREE_CODE (decl) == VAR_DECL
1432 && !DECL_EXTERNAL (decl)
1433 && DECL_RTL_SET_P (decl))
1435 /* The COFF linker can move initialized global vars to the end.
1436 And that can screw up the symbol ordering. Defer those for
1437 sdbout_finish (). */
1438 if (!DECL_INITIAL (decl) || !TREE_PUBLIC (decl))
1439 sdbout_symbol (decl, 0);
1441 /* Output COFF information for non-global file-scope initialized
1443 if (DECL_INITIAL (decl) && GET_CODE (DECL_RTL (decl)) == MEM)
1444 sdbout_toplevel_data (decl);
1448 /* Output initialized global vars at the end, in the order of
1449 definition. See comment in sdbout_global_decl. */
1452 sdbout_finish (const char *main_filename ATTRIBUTE_UNUSED)
1454 tree decl = (*lang_hooks.decls.getdecls) ();
1455 unsigned int len = list_length (decl);
1456 tree *vec = xmalloc (sizeof (tree) * len);
1459 /* Process the decls in reverse order--earliest first. Put them
1460 into VEC from back to front, then take out from front. */
1462 for (i = 0; i < len; i++, decl = TREE_CHAIN (decl))
1463 vec[len - i - 1] = decl;
1465 for (i = 0; i < len; i++)
1468 if (TREE_CODE (decl) == VAR_DECL
1469 && ! DECL_EXTERNAL (decl)
1470 && DECL_INITIAL (decl)
1471 && TREE_PUBLIC (decl)
1472 && DECL_RTL_SET_P (decl))
1473 sdbout_symbol (decl, 0);
1479 /* Describe the beginning of an internal block within a function.
1480 Also output descriptions of variables defined in this block.
1482 N is the number of the block, by order of beginning, counting from 1,
1483 and not counting the outermost (function top-level) block.
1484 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1485 if the count starts at 0 for the outermost one. */
1488 sdbout_begin_block (unsigned int line, unsigned int n)
1490 tree decl = current_function_decl;
1491 MAKE_LINE_SAFE (line);
1493 /* The SCO compiler does not emit a separate block for the function level
1494 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1495 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1496 #ifndef MIPS_DEBUGGING_INFO
1499 PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
1503 /* Include the outermost BLOCK's variables in block 1. */
1504 do_block = BLOCK_NUMBER (DECL_INITIAL (decl));
1505 sdbout_block (DECL_INITIAL (decl));
1507 /* If -g1, suppress all the internal symbols of functions
1508 except for arguments. */
1509 if (debug_info_level != DINFO_LEVEL_TERSE)
1512 sdbout_block (DECL_INITIAL (decl));
1515 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1516 sdbout_dequeue_anonymous_types ();
1520 /* Describe the end line-number of an internal block within a function. */
1523 sdbout_end_block (unsigned int line, unsigned int n ATTRIBUTE_UNUSED)
1525 MAKE_LINE_SAFE (line);
1527 /* The SCO compiler does not emit a separate block for the function level
1528 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1529 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1530 #ifndef MIPS_DEBUGGING_INFO
1533 PUT_SDB_BLOCK_END (line - sdb_begin_function_line);
1536 /* Output a line number symbol entry for source file FILENAME and line
1540 sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED)
1542 /* COFF relative line numbers must be positive. */
1543 if ((int) line > sdb_begin_function_line)
1545 #ifdef ASM_OUTPUT_SOURCE_LINE
1546 sdbout_source_line_counter += 1;
1547 ASM_OUTPUT_SOURCE_LINE (asm_out_file, line, sdbout_source_line_counter);
1549 fprintf (asm_out_file, "\t.ln\t%d\n",
1550 ((sdb_begin_function_line > -1)
1551 ? line - sdb_begin_function_line : 1));
1556 /* Output sdb info for the current function name.
1557 Called from assemble_start_function. */
1560 sdbout_begin_function (tree decl ATTRIBUTE_UNUSED)
1562 sdbout_symbol (current_function_decl, 0);
1565 /* Called at beginning of function body (before or after prologue,
1566 depending on MIPS_DEBUGGING_INFO). Record the function's starting
1567 line number, so we can output relative line numbers for the other
1568 lines. Describe beginning of outermost block. Also describe the
1571 #ifndef MIPS_DEBUGGING_INFO
1573 sdbout_begin_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED)
1575 sdbout_end_prologue (line, file);
1580 sdbout_end_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED)
1582 sdb_begin_function_line = line - 1;
1583 PUT_SDB_FUNCTION_START (line);
1584 sdbout_parms (DECL_ARGUMENTS (current_function_decl));
1585 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
1588 /* Called at end of function (before epilogue).
1589 Describe end of outermost block. */
1592 sdbout_end_function (unsigned int line)
1594 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1595 sdbout_dequeue_anonymous_types ();
1598 MAKE_LINE_SAFE (line);
1599 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
1601 /* Indicate we are between functions, for line-number output. */
1602 sdb_begin_function_line = -1;
1605 /* Output sdb info for the absolute end of a function.
1606 Called after the epilogue is output. */
1609 sdbout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED,
1610 const char *file ATTRIBUTE_UNUSED)
1612 const char *const name ATTRIBUTE_UNUSED
1613 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
1615 #ifdef PUT_SDB_EPILOGUE_END
1616 PUT_SDB_EPILOGUE_END (name);
1618 fprintf (asm_out_file, "\t.def\t");
1619 assemble_name (asm_out_file, name);
1620 fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n",
1621 SDB_DELIM, SDB_DELIM, SDB_DELIM);
1625 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1629 sdbout_label (rtx insn)
1631 PUT_SDB_DEF (LABEL_NAME (insn));
1633 PUT_SDB_SCL (C_LABEL);
1634 PUT_SDB_TYPE (T_NULL);
1638 /* Change to reading from a new source file. */
1641 sdbout_start_source_file (unsigned int line ATTRIBUTE_UNUSED,
1642 const char *filename ATTRIBUTE_UNUSED)
1644 #ifdef MIPS_DEBUGGING_INFO
1645 struct sdb_file *n = xmalloc (sizeof *n);
1647 n->next = current_file;
1650 PUT_SDB_SRC_FILE (filename);
1654 /* Revert to reading a previous source file. */
1657 sdbout_end_source_file (unsigned int line ATTRIBUTE_UNUSED)
1659 #ifdef MIPS_DEBUGGING_INFO
1660 struct sdb_file *next;
1662 next = current_file->next;
1663 free (current_file);
1664 current_file = next;
1665 PUT_SDB_SRC_FILE (current_file->name);
1669 /* Set up for SDB output at the start of compilation. */
1672 sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED)
1674 #ifdef MIPS_DEBUGGING_INFO
1675 current_file = xmalloc (sizeof *current_file);
1676 current_file->next = NULL;
1677 current_file->name = input_file_name;
1681 #else /* SDB_DEBUGGING_INFO */
1683 /* This should never be used, but its address is needed for comparisons. */
1684 const struct gcc_debug_hooks sdb_debug_hooks;
1686 #endif /* SDB_DEBUGGING_INFO */
1688 #include "gt-sdbout.h"