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, 2005, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
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"
53 static GTY(()) tree anonymous_types;
55 /* Counter to generate unique "names" for nameless struct members. */
57 static GTY(()) int unnamed_struct_number;
59 /* Declarations whose debug info was deferred till end of compilation. */
61 static GTY(()) varray_type deferred_global_decls;
63 /* The C front end may call sdbout_symbol before sdbout_init runs.
64 We save all such decls in this list and output them when we get
67 static GTY(()) tree preinit_symbols;
68 static GTY(()) bool sdbout_initialized;
70 #ifdef SDB_DEBUGGING_INFO
75 #include "insn-config.h"
81 #include "langhooks.h"
84 /* 1 if PARM is passed to this function in memory. */
86 #define PARM_PASSED_IN_MEMORY(PARM) \
87 (MEM_P (DECL_INCOMING_RTL (PARM)))
89 /* A C expression for the integer offset value of an automatic variable
90 (C_AUTO) having address X (an RTX). */
91 #ifndef DEBUGGER_AUTO_OFFSET
92 #define DEBUGGER_AUTO_OFFSET(X) \
93 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
96 /* A C expression for the integer offset value of an argument (C_ARG)
97 having address X (an RTX). The nominal offset is OFFSET. */
98 #ifndef DEBUGGER_ARG_OFFSET
99 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
102 /* Line number of beginning of current function, minus one.
103 Negative means not in a function or not using sdb. */
105 int sdb_begin_function_line = -1;
108 extern FILE *asm_out_file;
110 extern tree current_function_decl;
114 static void sdbout_init (const char *);
115 static void sdbout_finish (const char *);
116 static void sdbout_start_source_file (unsigned int, const char *);
117 static void sdbout_end_source_file (unsigned int);
118 static void sdbout_begin_block (unsigned int, unsigned int);
119 static void sdbout_end_block (unsigned int, unsigned int);
120 static void sdbout_source_line (unsigned int, const char *, int, bool);
121 static void sdbout_end_epilogue (unsigned int, const char *);
122 static void sdbout_global_decl (tree);
123 #ifndef MIPS_DEBUGGING_INFO
124 static void sdbout_begin_prologue (unsigned int, const char *);
126 static void sdbout_end_prologue (unsigned int, const char *);
127 static void sdbout_begin_function (tree);
128 static void sdbout_end_function (unsigned int);
129 static void sdbout_toplevel_data (tree);
130 static void sdbout_label (rtx);
131 static char *gen_fake_label (void);
132 static int plain_type (tree);
133 static int template_name_p (tree);
134 static void sdbout_record_type_name (tree);
135 static int plain_type_1 (tree, int);
136 static void sdbout_block (tree);
137 static void sdbout_syms (tree);
138 #ifdef SDB_ALLOW_FORWARD_REFERENCES
139 static void sdbout_queue_anonymous_type (tree);
140 static void sdbout_dequeue_anonymous_types (void);
142 static void sdbout_type (tree);
143 static void sdbout_field_types (tree);
144 static void sdbout_one_type (tree);
145 static void sdbout_parms (tree);
146 static void sdbout_reg_parms (tree);
147 static void sdbout_global_decl (tree);
149 /* Random macros describing parts of SDB data. */
151 /* Default value of delimiter is ";". */
153 #define SDB_DELIM ";"
156 /* Maximum number of dimensions the assembler will allow. */
158 #define SDB_MAX_DIM 4
162 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
165 #ifndef PUT_SDB_INT_VAL
166 #define PUT_SDB_INT_VAL(a) \
168 fprintf (asm_out_file, "\t.val\t" HOST_WIDE_INT_PRINT_DEC "%s", \
169 (HOST_WIDE_INT) (a), SDB_DELIM); \
175 #define PUT_SDB_VAL(a) \
176 ( fputs ("\t.val\t", asm_out_file), \
177 output_addr_const (asm_out_file, (a)), \
178 fprintf (asm_out_file, SDB_DELIM))
182 #define PUT_SDB_DEF(a) \
183 do { fprintf (asm_out_file, "\t.def\t"); \
184 assemble_name (asm_out_file, a); \
185 fprintf (asm_out_file, SDB_DELIM); } while (0)
188 #ifndef PUT_SDB_PLAIN_DEF
189 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
192 #ifndef PUT_SDB_ENDEF
193 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
197 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
201 #define PUT_SDB_SIZE(a) \
203 fprintf (asm_out_file, "\t.size\t" HOST_WIDE_INT_PRINT_DEC "%s", \
204 (HOST_WIDE_INT) (a), SDB_DELIM); \
208 #ifndef PUT_SDB_START_DIM
209 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
212 #ifndef PUT_SDB_NEXT_DIM
213 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
216 #ifndef PUT_SDB_LAST_DIM
217 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
221 #define PUT_SDB_TAG(a) \
222 do { fprintf (asm_out_file, "\t.tag\t"); \
223 assemble_name (asm_out_file, a); \
224 fprintf (asm_out_file, SDB_DELIM); } while (0)
227 #ifndef PUT_SDB_BLOCK_START
228 #define PUT_SDB_BLOCK_START(LINE) \
229 fprintf (asm_out_file, \
230 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
231 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
234 #ifndef PUT_SDB_BLOCK_END
235 #define PUT_SDB_BLOCK_END(LINE) \
236 fprintf (asm_out_file, \
237 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
238 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
241 #ifndef PUT_SDB_FUNCTION_START
242 #define PUT_SDB_FUNCTION_START(LINE) \
243 fprintf (asm_out_file, \
244 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
245 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
248 #ifndef PUT_SDB_FUNCTION_END
249 #define PUT_SDB_FUNCTION_END(LINE) \
250 fprintf (asm_out_file, \
251 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
252 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
255 /* Return the sdb tag identifier string for TYPE
256 if TYPE has already been defined; otherwise return a null pointer. */
258 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
260 /* Set the sdb tag identifier string for TYPE to NAME. */
262 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
263 TYPE_SYMTAB_POINTER (TYPE) = (const char *)(NAME)
265 /* Return the name (a string) of the struct, union or enum tag
266 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
268 #define TAG_NAME(link) \
269 (((link) && TREE_PURPOSE ((link)) \
270 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
271 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
273 /* Ensure we don't output a negative line number. */
274 #define MAKE_LINE_SAFE(line) \
275 if ((int) line <= sdb_begin_function_line) \
276 line = sdb_begin_function_line + 1
278 /* Perform linker optimization of merging header file definitions together
279 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a
280 post 960826 version of GAS. Nothing breaks with earlier versions of GAS,
281 the optimization just won't be done. The native assembler already has the
282 necessary support. */
284 #ifdef MIPS_DEBUGGING_INFO
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 /* The debug hooks structure. */
306 const struct gcc_debug_hooks sdb_debug_hooks =
308 sdbout_init, /* init */
309 sdbout_finish, /* finish */
310 debug_nothing_int_charstar, /* define */
311 debug_nothing_int_charstar, /* undef */
312 sdbout_start_source_file, /* start_source_file */
313 sdbout_end_source_file, /* end_source_file */
314 sdbout_begin_block, /* begin_block */
315 sdbout_end_block, /* end_block */
316 debug_true_const_tree, /* ignore_block */
317 sdbout_source_line, /* source_line */
318 #ifdef MIPS_DEBUGGING_INFO
319 /* Defer on MIPS systems so that parameter descriptions follow
321 debug_nothing_int_charstar, /* begin_prologue */
322 sdbout_end_prologue, /* end_prologue */
324 sdbout_begin_prologue, /* begin_prologue */
325 debug_nothing_int_charstar, /* end_prologue */
327 sdbout_end_epilogue, /* end_epilogue */
328 sdbout_begin_function, /* begin_function */
329 sdbout_end_function, /* end_function */
330 debug_nothing_tree, /* function_decl */
331 sdbout_global_decl, /* global_decl */
332 sdbout_symbol, /* type_decl */
333 debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */
334 debug_nothing_tree, /* deferred_inline_function */
335 debug_nothing_tree, /* outlining_inline_function */
336 sdbout_label, /* label */
337 debug_nothing_int, /* handle_pch */
338 debug_nothing_rtx, /* var_location */
339 debug_nothing_void, /* switch_text_section */
340 debug_nothing_tree, /* direct_call */
341 debug_nothing_tree_int, /* virtual_call_token */
342 debug_nothing_uid, /* virtual_call */
343 debug_nothing_tree_tree, /* set_name */
344 0 /* start_end_main_source_file */
347 /* Return a unique string to name an anonymous type. */
350 gen_fake_label (void)
354 sprintf (label, ".%dfake", unnamed_struct_number);
355 unnamed_struct_number++;
356 labelstr = xstrdup (label);
360 /* Return the number which describes TYPE for SDB.
361 For pointers, etc., this function is recursive.
362 Each record, union or enumeral type must already have had a
363 tag number output. */
365 /* The number is given by d6d5d4d3d2d1bbbb
366 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
367 Thus, char *foo () has bbbb=T_CHAR
370 N_BTMASK= 017 1111 basic type field.
371 N_TSHIFT= 2 derived type shift
372 N_BTSHFT= 4 Basic type shift */
374 /* Produce the number that describes a pointer, function or array type.
375 PREV is the number describing the target, value or element type.
376 DT_type describes how to transform that type. */
377 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
378 ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \
379 | ((int) DT_type << (int) N_BTSHFT) \
380 | ((PREV) & (int) N_BTMASK))
382 /* Number of elements used in sdb_dims. */
383 static int sdb_n_dims = 0;
385 /* Table of array dimensions of current type. */
386 static int sdb_dims[SDB_MAX_DIM];
388 /* Size of outermost array currently being processed. */
389 static int sdb_type_size = -1;
392 plain_type (tree type)
394 int val = plain_type_1 (type, 0);
396 /* If we have already saved up some array dimensions, print them now. */
401 for (i = sdb_n_dims - 1; i > 0; i--)
402 PUT_SDB_NEXT_DIM (sdb_dims[i]);
403 PUT_SDB_LAST_DIM (sdb_dims[0]);
406 sdb_type_size = int_size_in_bytes (type);
407 /* Don't kill sdb if type is not laid out or has variable size. */
408 if (sdb_type_size < 0)
411 /* If we have computed the size of an array containing this type,
413 if (sdb_type_size >= 0)
415 PUT_SDB_SIZE (sdb_type_size);
422 template_name_p (tree name)
424 const char *ptr = IDENTIFIER_POINTER (name);
425 while (*ptr && *ptr != '<')
432 sdbout_record_type_name (tree type)
434 const char *name = 0;
437 if (KNOWN_TYPE_TAG (type))
440 if (TYPE_NAME (type) != 0)
444 /* Find the IDENTIFIER_NODE for the type name. */
445 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
446 t = TYPE_NAME (type);
447 else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
449 t = DECL_NAME (TYPE_NAME (type));
450 /* The DECL_NAME for templates includes "<>", which breaks
451 most assemblers. Use its assembler name instead, which
452 has been mangled into being safe. */
453 if (t && template_name_p (t))
454 t = DECL_ASSEMBLER_NAME (TYPE_NAME (type));
457 /* Now get the name as a string, or invent one. */
459 name = IDENTIFIER_POINTER (t);
462 no_name = (name == 0 || *name == 0);
464 name = gen_fake_label ();
466 SET_KNOWN_TYPE_TAG (type, name);
467 #ifdef SDB_ALLOW_FORWARD_REFERENCES
469 sdbout_queue_anonymous_type (type);
473 /* Return the .type value for type TYPE.
475 LEVEL indicates how many levels deep we have recursed into the type.
476 The SDB debug format can only represent 6 derived levels of types.
477 After that, we must output inaccurate debug info. We deliberately
478 stop before the 7th level, so that ADA recursive types will not give an
482 plain_type_1 (tree type, int level)
485 type = void_type_node;
486 else if (type == error_mark_node)
487 type = integer_type_node;
489 type = TYPE_MAIN_VARIANT (type);
491 switch (TREE_CODE (type))
498 int size = int_size_in_bytes (type) * BITS_PER_UNIT;
500 /* Carefully distinguish all the standard types of C,
501 without messing up if the language is not C.
502 Note that we check only for the names that contain spaces;
503 other names might occur by coincidence in other languages. */
504 if (TYPE_NAME (type) != 0
505 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
506 && DECL_NAME (TYPE_NAME (type)) != 0
507 && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE)
509 const char *const name
510 = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
512 if (!strcmp (name, "char"))
514 if (!strcmp (name, "unsigned char"))
516 if (!strcmp (name, "signed char"))
518 if (!strcmp (name, "int"))
520 if (!strcmp (name, "unsigned int"))
522 if (!strcmp (name, "short int"))
524 if (!strcmp (name, "short unsigned int"))
526 if (!strcmp (name, "long int"))
528 if (!strcmp (name, "long unsigned int"))
532 if (size == INT_TYPE_SIZE)
533 return (TYPE_UNSIGNED (type) ? T_UINT : T_INT);
534 if (size == CHAR_TYPE_SIZE)
535 return (TYPE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
536 if (size == SHORT_TYPE_SIZE)
537 return (TYPE_UNSIGNED (type) ? T_USHORT : T_SHORT);
538 if (size == LONG_TYPE_SIZE)
539 return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG);
540 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */
541 return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG);
547 int precision = TYPE_PRECISION (type);
548 if (precision == FLOAT_TYPE_SIZE)
550 if (precision == DOUBLE_TYPE_SIZE)
552 #ifdef EXTENDED_SDB_BASIC_TYPES
553 if (precision == LONG_DOUBLE_TYPE_SIZE)
556 if (precision == LONG_DOUBLE_TYPE_SIZE)
557 return T_DOUBLE; /* better than nothing */
568 m = plain_type_1 (TREE_TYPE (type), level+1);
569 if (sdb_n_dims < SDB_MAX_DIM)
570 sdb_dims[sdb_n_dims++]
571 = (TYPE_DOMAIN (type)
572 && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0
573 && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0
574 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0)
575 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0)
576 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0)
577 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1)
580 return PUSH_DERIVED_LEVEL (DT_ARY, m);
585 case QUAL_UNION_TYPE:
589 #ifdef SDB_ALLOW_FORWARD_REFERENCES
590 sdbout_record_type_name (type);
592 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
593 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
594 #ifdef SDB_ALLOW_FORWARD_REFERENCES
595 || TYPE_MODE (type) != VOIDmode
600 /* Output the referenced structure tag name
601 only if the .def has already been finished.
602 At least on 386, the Unix assembler
603 cannot handle forward references to tags. */
604 /* But the 88100, it requires them, sigh... */
605 /* And the MIPS requires unknown refs as well... */
606 tag = KNOWN_TYPE_TAG (type);
608 /* These 3 lines used to follow the close brace.
609 However, a size of 0 without a tag implies a tag of 0,
610 so if we don't know a tag, we can't mention the size. */
611 sdb_type_size = int_size_in_bytes (type);
612 if (sdb_type_size < 0)
615 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
616 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION
617 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION
627 m = plain_type_1 (TREE_TYPE (type), level+1);
628 return PUSH_DERIVED_LEVEL (DT_PTR, m);
637 m = plain_type_1 (TREE_TYPE (type), level+1);
638 return PUSH_DERIVED_LEVEL (DT_FCN, m);
645 /* Output the symbols defined in block number DO_BLOCK.
647 This function works by walking the tree structure of blocks,
648 counting blocks until it finds the desired block. */
650 static int do_block = 0;
653 sdbout_block (tree block)
657 /* Ignore blocks never expanded or otherwise marked as real. */
658 if (TREE_USED (block))
660 /* When we reach the specified block, output its symbols. */
661 if (BLOCK_NUMBER (block) == do_block)
662 sdbout_syms (BLOCK_VARS (block));
664 /* If we are past the specified block, stop the scan. */
665 if (BLOCK_NUMBER (block) > do_block)
668 /* Scan the blocks within this block. */
669 sdbout_block (BLOCK_SUBBLOCKS (block));
672 block = BLOCK_CHAIN (block);
676 /* Call sdbout_symbol on each decl in the chain SYMS. */
679 sdbout_syms (tree syms)
683 if (TREE_CODE (syms) != LABEL_DECL)
684 sdbout_symbol (syms, 1);
685 syms = TREE_CHAIN (syms);
689 /* Output SDB information for a symbol described by DECL.
690 LOCAL is nonzero if the symbol is not file-scope. */
693 sdbout_symbol (tree decl, int local)
695 tree type = TREE_TYPE (decl);
696 tree context = NULL_TREE;
701 /* If we are called before sdbout_init is run, just save the symbol
703 if (!sdbout_initialized)
705 preinit_symbols = tree_cons (0, decl, preinit_symbols);
709 sdbout_one_type (type);
711 switch (TREE_CODE (decl))
714 /* Enum values are defined by defining the enum type. */
718 /* Don't mention a nested function under its parent. */
719 context = decl_function_context (decl);
720 if (context == current_function_decl)
722 /* Check DECL_INITIAL to distinguish declarations from definitions.
723 Don't output debug info here for declarations; they will have
724 a DECL_INITIAL value of 0. */
725 if (! DECL_INITIAL (decl))
727 if (!MEM_P (DECL_RTL (decl))
728 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
730 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
731 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
732 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
736 /* Done with tagged types. */
737 if (DECL_NAME (decl) == 0)
739 if (DECL_IGNORED_P (decl))
741 /* Don't output intrinsic types. GAS chokes on SDB .def
742 statements that contain identifiers with embedded spaces
743 (eg "unsigned long"). */
744 if (DECL_IS_BUILTIN (decl))
747 /* Output typedef name. */
748 if (template_name_p (DECL_NAME (decl)))
749 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
751 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
752 PUT_SDB_SCL (C_TPDEF);
756 /* Parm decls go in their own separate chains
757 and are output by sdbout_reg_parms and sdbout_parms. */
761 /* Don't mention a variable that is external.
762 Let the file that defines it describe it. */
763 if (DECL_EXTERNAL (decl))
766 /* Ignore __FUNCTION__, etc. */
767 if (DECL_IGNORED_P (decl))
770 /* If there was an error in the declaration, don't dump core
771 if there is no RTL associated with the variable doesn't
773 if (!DECL_RTL_SET_P (decl))
777 eliminate_regs (DECL_RTL (decl), VOIDmode, 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. */
792 regno = REGNO (value);
793 if (regno >= FIRST_PSEUDO_REGISTER)
796 else if (GET_CODE (value) == SUBREG)
798 while (GET_CODE (value) == SUBREG)
799 value = SUBREG_REG (value);
802 if (REGNO (value) >= FIRST_PSEUDO_REGISTER)
805 regno = REGNO (alter_subreg (&value));
806 SET_DECL_RTL (decl, value);
808 /* Don't output anything if an auto variable
809 gets RTL that is static.
810 GAS version 2.2 can't handle such output. */
811 else if (MEM_P (value) && CONSTANT_P (XEXP (value, 0))
812 && ! TREE_STATIC (decl))
815 /* Emit any structure, union, or enum type that has not been output.
816 This occurs for tag-less structs (et al) used to declare variables
818 if (TREE_CODE (type) == ENUMERAL_TYPE
819 || TREE_CODE (type) == RECORD_TYPE
820 || TREE_CODE (type) == UNION_TYPE
821 || TREE_CODE (type) == QUAL_UNION_TYPE)
823 if (COMPLETE_TYPE_P (type) /* not a forward reference */
824 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
825 sdbout_one_type (type);
828 /* Defer SDB information for top-level initialized variables! */
831 && DECL_INITIAL (decl))
834 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
835 For now, avoid crashing. */
836 if (DECL_NAME (decl) == NULL_TREE)
839 /* Record the name for, starting a symtab entry. */
841 name = IDENTIFIER_POINTER (DECL_NAME (decl));
843 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
846 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
849 if (TREE_PUBLIC (decl))
851 PUT_SDB_VAL (XEXP (value, 0));
856 PUT_SDB_VAL (XEXP (value, 0));
857 PUT_SDB_SCL (C_STAT);
863 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
866 else if (MEM_P (value)
867 && (MEM_P (XEXP (value, 0))
868 || (REG_P (XEXP (value, 0))
869 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM
870 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
871 /* If the value is indirect by memory or by a register
872 that isn't the frame pointer
873 then it means the object is variable-sized and address through
874 that register or stack slot. COFF has no way to represent this
875 so all we can do is output the variable as a pointer. */
878 if (REG_P (XEXP (value, 0)))
880 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
885 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
887 We want the value of that CONST_INT. */
888 /* Encore compiler hates a newline in a macro arg, it seems. */
889 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
890 (XEXP (XEXP (value, 0), 0)));
891 PUT_SDB_SCL (C_AUTO);
894 /* Effectively do build_pointer_type, but don't cache this type,
895 since it might be temporary whereas the type it points to
896 might have been saved for inlining. */
897 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
898 type = make_node (POINTER_TYPE);
899 TREE_TYPE (type) = TREE_TYPE (decl);
901 else if (MEM_P (value)
902 && ((GET_CODE (XEXP (value, 0)) == PLUS
903 && REG_P (XEXP (XEXP (value, 0), 0))
904 && CONST_INT_P (XEXP (XEXP (value, 0), 1)))
905 /* This is for variables which are at offset zero from
906 the frame pointer. This happens on the Alpha.
907 Non-frame pointer registers are excluded above. */
908 || (REG_P (XEXP (value, 0)))))
910 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
911 or (MEM (REG...)). We want the value of that CONST_INT
914 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
915 PUT_SDB_SCL (C_AUTO);
919 /* It is something we don't know how to represent for SDB. */
927 PUT_SDB_TYPE (plain_type (type));
931 /* Output SDB information for a top-level initialized variable
932 that has been delayed. */
935 sdbout_toplevel_data (tree decl)
937 tree type = TREE_TYPE (decl);
939 if (DECL_IGNORED_P (decl))
942 gcc_assert (TREE_CODE (decl) == VAR_DECL);
943 gcc_assert (MEM_P (DECL_RTL (decl)));
944 gcc_assert (DECL_INITIAL (decl));
946 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
947 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
948 if (TREE_PUBLIC (decl))
954 PUT_SDB_SCL (C_STAT);
956 PUT_SDB_TYPE (plain_type (type));
960 #ifdef SDB_ALLOW_FORWARD_REFERENCES
962 /* Machinery to record and output anonymous types. */
965 sdbout_queue_anonymous_type (tree type)
967 anonymous_types = tree_cons (NULL_TREE, type, anonymous_types);
971 sdbout_dequeue_anonymous_types (void)
975 while (anonymous_types)
977 types = nreverse (anonymous_types);
978 anonymous_types = NULL_TREE;
980 for (link = types; link; link = TREE_CHAIN (link))
982 tree type = TREE_VALUE (link);
984 if (type && ! TREE_ASM_WRITTEN (type))
985 sdbout_one_type (type);
992 /* Given a chain of ..._TYPE nodes, all of which have names,
993 output definitions of those names, as typedefs. */
996 sdbout_types (tree types)
1000 for (link = types; link; link = TREE_CHAIN (link))
1001 sdbout_one_type (link);
1003 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1004 sdbout_dequeue_anonymous_types ();
1009 sdbout_type (tree type)
1011 if (type == error_mark_node)
1012 type = integer_type_node;
1013 PUT_SDB_TYPE (plain_type (type));
1016 /* Output types of the fields of type TYPE, if they are structs.
1018 Formerly did not chase through pointer types, since that could be circular.
1019 They must come before TYPE, since forward refs are not allowed.
1020 Now james@bigtex.cactus.org says to try them. */
1023 sdbout_field_types (tree type)
1027 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
1028 /* This condition should match the one for emitting the actual
1030 if (TREE_CODE (tail) == FIELD_DECL
1033 && host_integerp (DECL_SIZE (tail), 1)
1034 && host_integerp (bit_position (tail), 0))
1036 if (POINTER_TYPE_P (TREE_TYPE (tail)))
1037 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
1039 sdbout_one_type (TREE_TYPE (tail));
1043 /* Use this to put out the top level defined record and union types
1044 for later reference. If this is a struct with a name, then put that
1045 name out. Other unnamed structs will have .xxfake labels generated so
1046 that they may be referred to later.
1047 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1048 It may NOT be called recursively. */
1051 sdbout_one_type (tree type)
1053 if (current_function_decl != NULL_TREE
1054 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE)
1055 ; /* Don't change section amid function. */
1057 switch_to_section (text_section);
1059 switch (TREE_CODE (type))
1063 case QUAL_UNION_TYPE:
1065 type = TYPE_MAIN_VARIANT (type);
1066 /* Don't output a type twice. */
1067 if (TREE_ASM_WRITTEN (type))
1068 /* James said test TREE_ASM_BEING_WRITTEN here. */
1071 /* Output nothing if type is not yet defined. */
1072 if (!COMPLETE_TYPE_P (type))
1075 TREE_ASM_WRITTEN (type) = 1;
1077 /* This is reputed to cause trouble with the following case,
1078 but perhaps checking TYPE_SIZE above will fix it. */
1080 /* Here is a testcase:
1086 typedef struct intermediate {
1090 typedef struct badstr {
1094 /* This change, which ought to make better output,
1095 used to make the COFF assembler unhappy.
1096 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1097 /* Before really doing anything, output types we want to refer to. */
1098 /* Note that in version 1 the following two lines
1099 are not used if forward references are in use. */
1100 if (TREE_CODE (type) != ENUMERAL_TYPE)
1101 sdbout_field_types (type);
1103 /* Output a structure type. */
1105 int size = int_size_in_bytes (type);
1109 /* Record the type tag, but not in its permanent place just yet. */
1110 sdbout_record_type_name (type);
1112 PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
1114 switch (TREE_CODE (type))
1117 case QUAL_UNION_TYPE:
1118 PUT_SDB_SCL (C_UNTAG);
1119 PUT_SDB_TYPE (T_UNION);
1124 PUT_SDB_SCL (C_STRTAG);
1125 PUT_SDB_TYPE (T_STRUCT);
1130 PUT_SDB_SCL (C_ENTAG);
1131 PUT_SDB_TYPE (T_ENUM);
1139 PUT_SDB_SIZE (size);
1142 /* Print out the base class information with fields
1143 named after the types they hold. */
1144 /* This is only relevant to aggregate types. TYPE_BINFO is used
1145 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1147 if (TREE_CODE (type) != ENUMERAL_TYPE && TYPE_BINFO (type))
1152 for (binfo = TYPE_BINFO (type), i = 0;
1153 BINFO_BASE_ITERATE (binfo, i, child); i++)
1155 tree child_type = BINFO_TYPE (child);
1156 tree child_type_name;
1158 if (TYPE_NAME (child_type) == 0)
1160 if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE)
1161 child_type_name = TYPE_NAME (child_type);
1162 else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL)
1164 child_type_name = DECL_NAME (TYPE_NAME (child_type));
1165 if (child_type_name && template_name_p (child_type_name))
1167 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type));
1172 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name));
1173 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0));
1174 PUT_SDB_SCL (member_scl);
1175 sdbout_type (BINFO_TYPE (child));
1180 /* Output the individual fields. */
1182 if (TREE_CODE (type) == ENUMERAL_TYPE)
1184 for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem))
1186 tree value = TREE_VALUE (tem);
1188 if (TREE_CODE (value) == CONST_DECL)
1189 value = DECL_INITIAL (value);
1191 if (host_integerp (value, 0))
1193 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
1194 PUT_SDB_INT_VAL (tree_low_cst (value, 0));
1195 PUT_SDB_SCL (C_MOE);
1196 PUT_SDB_TYPE (T_MOE);
1201 else /* record or union type */
1202 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1203 /* Output the name, type, position (in bits), size (in bits)
1206 /* Omit here the nameless fields that are used to skip bits.
1207 Also omit fields with variable size or position.
1208 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1209 if (TREE_CODE (tem) == FIELD_DECL
1212 && host_integerp (DECL_SIZE (tem), 1)
1213 && host_integerp (bit_position (tem), 0))
1217 name = IDENTIFIER_POINTER (DECL_NAME (tem));
1219 if (DECL_BIT_FIELD_TYPE (tem))
1221 PUT_SDB_INT_VAL (int_bit_position (tem));
1222 PUT_SDB_SCL (C_FIELD);
1223 sdbout_type (DECL_BIT_FIELD_TYPE (tem));
1224 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1));
1228 PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT);
1229 PUT_SDB_SCL (member_scl);
1230 sdbout_type (TREE_TYPE (tem));
1234 /* Output end of a structure,union, or enumeral definition. */
1236 PUT_SDB_PLAIN_DEF ("eos");
1237 PUT_SDB_INT_VAL (size);
1238 PUT_SDB_SCL (C_EOS);
1239 PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
1240 PUT_SDB_SIZE (size);
1250 /* The following two functions output definitions of function parameters.
1251 Each parameter gets a definition locating it in the parameter list.
1252 Each parameter that is a register variable gets a second definition
1253 locating it in the register.
1255 Printing or argument lists in gdb uses the definitions that
1256 locate in the parameter list. But reference to the variable in
1257 expressions uses preferentially the definition as a register. */
1259 /* Output definitions, referring to storage in the parmlist,
1260 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1263 sdbout_parms (tree parms)
1265 for (; parms; parms = TREE_CHAIN (parms))
1266 if (DECL_NAME (parms))
1268 int current_sym_value = 0;
1269 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1271 if (name == 0 || *name == 0)
1272 name = gen_fake_label ();
1274 /* Perform any necessary register eliminations on the parameter's rtl,
1275 so that the debugging output will be accurate. */
1276 DECL_INCOMING_RTL (parms)
1277 = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX);
1278 SET_DECL_RTL (parms,
1279 eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX));
1281 if (PARM_PASSED_IN_MEMORY (parms))
1283 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1286 /* ??? Here we assume that the parm address is indexed
1287 off the frame pointer or arg pointer.
1288 If that is not true, we produce meaningless results,
1289 but do not crash. */
1290 if (GET_CODE (addr) == PLUS
1291 && CONST_INT_P (XEXP (addr, 1)))
1292 current_sym_value = INTVAL (XEXP (addr, 1));
1294 current_sym_value = 0;
1296 if (REG_P (DECL_RTL (parms))
1297 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1298 type = DECL_ARG_TYPE (parms);
1301 int original_sym_value = current_sym_value;
1303 /* This is the case where the parm is passed as an int or
1304 double and it is converted to a char, short or float
1305 and stored back in the parmlist. In this case, describe
1306 the parm with the variable's declared type, and adjust
1307 the address if the least significant bytes (which we are
1308 using) are not the first ones. */
1309 if (BYTES_BIG_ENDIAN
1310 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1311 current_sym_value +=
1312 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1313 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1315 if (MEM_P (DECL_RTL (parms))
1316 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1317 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1319 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1320 == current_sym_value))
1321 type = TREE_TYPE (parms);
1324 current_sym_value = original_sym_value;
1325 type = DECL_ARG_TYPE (parms);
1330 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
1331 PUT_SDB_SCL (C_ARG);
1332 PUT_SDB_TYPE (plain_type (type));
1335 else if (REG_P (DECL_RTL (parms)))
1338 /* Parm passed in registers and lives in registers or nowhere. */
1340 /* If parm lives in a register, use that register;
1341 pretend the parm was passed there. It would be more consistent
1342 to describe the register where the parm was passed,
1343 but in practice that register usually holds something else. */
1344 if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1345 best_rtl = DECL_RTL (parms);
1346 /* If the parm lives nowhere,
1347 use the register where it was passed. */
1349 best_rtl = DECL_INCOMING_RTL (parms);
1352 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl)));
1353 PUT_SDB_SCL (C_REGPARM);
1354 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1357 else if (MEM_P (DECL_RTL (parms))
1358 && XEXP (DECL_RTL (parms), 0) != const0_rtx)
1360 /* Parm was passed in registers but lives on the stack. */
1362 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1363 in which case we want the value of that CONST_INT,
1364 or (MEM (REG ...)) or (MEM (MEM ...)),
1365 in which case we use a value of zero. */
1366 if (REG_P (XEXP (DECL_RTL (parms), 0))
1367 || MEM_P (XEXP (DECL_RTL (parms), 0)))
1368 current_sym_value = 0;
1370 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
1372 /* Again, this assumes the offset is based on the arg pointer. */
1374 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value,
1375 XEXP (DECL_RTL (parms), 0)));
1376 PUT_SDB_SCL (C_ARG);
1377 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1383 /* Output definitions for the places where parms live during the function,
1384 when different from where they were passed, when the parms were passed
1387 It is not useful to do this for parms passed in registers
1388 that live during the function in different registers, because it is
1389 impossible to look in the passed register for the passed value,
1390 so we use the within-the-function register to begin with.
1392 PARMS is a chain of PARM_DECL nodes. */
1395 sdbout_reg_parms (tree parms)
1397 for (; parms; parms = TREE_CHAIN (parms))
1398 if (DECL_NAME (parms))
1400 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1402 /* Report parms that live in registers during the function
1403 but were passed in memory. */
1404 if (REG_P (DECL_RTL (parms))
1405 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
1406 && PARM_PASSED_IN_MEMORY (parms))
1408 if (name == 0 || *name == 0)
1409 name = gen_fake_label ();
1411 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
1412 PUT_SDB_SCL (C_REG);
1413 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1416 /* Report parms that live in memory but not where they were passed. */
1417 else if (MEM_P (DECL_RTL (parms))
1418 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1419 && CONST_INT_P (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1420 && PARM_PASSED_IN_MEMORY (parms)
1421 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
1423 #if 0 /* ??? It is not clear yet what should replace this. */
1424 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
1425 /* A parm declared char is really passed as an int,
1426 so it occupies the least significant bytes.
1427 On a big-endian machine those are not the low-numbered ones. */
1428 if (BYTES_BIG_ENDIAN
1430 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1431 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1432 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1433 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
1436 if (name == 0 || *name == 0)
1437 name = gen_fake_label ();
1439 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1440 (XEXP (DECL_RTL (parms), 0)));
1441 PUT_SDB_SCL (C_AUTO);
1442 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1449 /* Output debug information for a global DECL. Called from toplev.c
1450 after compilation proper has finished. */
1453 sdbout_global_decl (tree decl)
1455 if (TREE_CODE (decl) == VAR_DECL
1456 && !DECL_EXTERNAL (decl)
1457 && DECL_RTL_SET_P (decl))
1459 /* The COFF linker can move initialized global vars to the end.
1460 And that can screw up the symbol ordering. Defer those for
1461 sdbout_finish (). */
1462 if (!DECL_INITIAL (decl) || !TREE_PUBLIC (decl))
1463 sdbout_symbol (decl, 0);
1465 VARRAY_PUSH_TREE (deferred_global_decls, decl);
1467 /* Output COFF information for non-global file-scope initialized
1469 if (DECL_INITIAL (decl) && MEM_P (DECL_RTL (decl)))
1470 sdbout_toplevel_data (decl);
1474 /* Output initialized global vars at the end, in the order of
1475 definition. See comment in sdbout_global_decl. */
1478 sdbout_finish (const char *main_filename ATTRIBUTE_UNUSED)
1482 for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_global_decls); i++)
1483 sdbout_symbol (VARRAY_TREE (deferred_global_decls, i), 0);
1486 /* Describe the beginning of an internal block within a function.
1487 Also output descriptions of variables defined in this block.
1489 N is the number of the block, by order of beginning, counting from 1,
1490 and not counting the outermost (function top-level) block.
1491 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1492 if the count starts at 0 for the outermost one. */
1495 sdbout_begin_block (unsigned int line, unsigned int n)
1497 tree decl = current_function_decl;
1498 MAKE_LINE_SAFE (line);
1500 /* The SCO compiler does not emit a separate block for the function level
1501 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1502 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1503 #ifndef MIPS_DEBUGGING_INFO
1506 PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
1510 /* Include the outermost BLOCK's variables in block 1. */
1511 do_block = BLOCK_NUMBER (DECL_INITIAL (decl));
1512 sdbout_block (DECL_INITIAL (decl));
1514 /* If -g1, suppress all the internal symbols of functions
1515 except for arguments. */
1516 if (debug_info_level != DINFO_LEVEL_TERSE)
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 (unsigned int line, unsigned 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 a line number symbol entry for source file FILENAME and line
1547 sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED,
1548 int discriminator ATTRIBUTE_UNUSED,
1549 bool is_stmt ATTRIBUTE_UNUSED)
1551 /* COFF relative line numbers must be positive. */
1552 if ((int) line > sdb_begin_function_line)
1554 #ifdef SDB_OUTPUT_SOURCE_LINE
1555 SDB_OUTPUT_SOURCE_LINE (asm_out_file, line);
1557 fprintf (asm_out_file, "\t.ln\t%d\n",
1558 ((sdb_begin_function_line > -1)
1559 ? line - sdb_begin_function_line : 1));
1564 /* Output sdb info for the current function name.
1565 Called from assemble_start_function. */
1568 sdbout_begin_function (tree decl ATTRIBUTE_UNUSED)
1570 sdbout_symbol (current_function_decl, 0);
1573 /* Called at beginning of function body (before or after prologue,
1574 depending on MIPS_DEBUGGING_INFO). Record the function's starting
1575 line number, so we can output relative line numbers for the other
1576 lines. Describe beginning of outermost block. Also describe the
1579 #ifndef MIPS_DEBUGGING_INFO
1581 sdbout_begin_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED)
1583 sdbout_end_prologue (line, file);
1588 sdbout_end_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED)
1590 sdb_begin_function_line = line - 1;
1591 PUT_SDB_FUNCTION_START (line);
1592 sdbout_parms (DECL_ARGUMENTS (current_function_decl));
1593 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
1596 /* Called at end of function (before epilogue).
1597 Describe end of outermost block. */
1600 sdbout_end_function (unsigned int line)
1602 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1603 sdbout_dequeue_anonymous_types ();
1606 MAKE_LINE_SAFE (line);
1607 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
1609 /* Indicate we are between functions, for line-number output. */
1610 sdb_begin_function_line = -1;
1613 /* Output sdb info for the absolute end of a function.
1614 Called after the epilogue is output. */
1617 sdbout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED,
1618 const char *file ATTRIBUTE_UNUSED)
1620 const char *const name ATTRIBUTE_UNUSED
1621 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
1623 #ifdef PUT_SDB_EPILOGUE_END
1624 PUT_SDB_EPILOGUE_END (name);
1626 fprintf (asm_out_file, "\t.def\t");
1627 assemble_name (asm_out_file, name);
1628 fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n",
1629 SDB_DELIM, SDB_DELIM, SDB_DELIM);
1633 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1637 sdbout_label (rtx insn)
1639 PUT_SDB_DEF (LABEL_NAME (insn));
1641 PUT_SDB_SCL (C_LABEL);
1642 PUT_SDB_TYPE (T_NULL);
1646 /* Change to reading from a new source file. */
1649 sdbout_start_source_file (unsigned int line ATTRIBUTE_UNUSED,
1650 const char *filename ATTRIBUTE_UNUSED)
1652 #ifdef MIPS_DEBUGGING_INFO
1653 struct sdb_file *n = XNEW (struct sdb_file);
1655 n->next = current_file;
1658 output_file_directive (asm_out_file, filename);
1662 /* Revert to reading a previous source file. */
1665 sdbout_end_source_file (unsigned int line ATTRIBUTE_UNUSED)
1667 #ifdef MIPS_DEBUGGING_INFO
1668 struct sdb_file *next;
1670 next = current_file->next;
1671 free (current_file);
1672 current_file = next;
1673 output_file_directive (asm_out_file, current_file->name);
1677 /* Set up for SDB output at the start of compilation. */
1680 sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED)
1684 #ifdef MIPS_DEBUGGING_INFO
1685 current_file = XNEW (struct sdb_file);
1686 current_file->next = NULL;
1687 current_file->name = input_file_name;
1690 VARRAY_TREE_INIT (deferred_global_decls, 12, "deferred_global_decls");
1692 /* Emit debug information which was queued by sdbout_symbol before
1694 sdbout_initialized = true;
1696 for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t))
1697 sdbout_symbol (TREE_VALUE (t), 0);
1698 preinit_symbols = 0;
1701 #else /* SDB_DEBUGGING_INFO */
1703 /* This should never be used, but its address is needed for comparisons. */
1704 const struct gcc_debug_hooks sdb_debug_hooks =
1710 0, /* start_source_file */
1711 0, /* end_source_file */
1712 0, /* begin_block */
1714 0, /* ignore_block */
1715 0, /* source_line */
1716 0, /* begin_prologue */
1717 0, /* end_prologue */
1718 0, /* end_epilogue */
1719 0, /* begin_function */
1720 0, /* end_function */
1721 0, /* function_decl */
1722 0, /* global_decl */
1724 0, /* imported_module_or_decl */
1725 0, /* deferred_inline_function */
1726 0, /* outlining_inline_function */
1729 0, /* var_location */
1730 0, /* switch_text_section */
1731 0, /* direct_call */
1732 0, /* virtual_call_token */
1733 0, /* virtual_call */
1735 0 /* start_end_main_source_file */
1739 #endif /* SDB_DEBUGGING_INFO */
1741 #include "gt-sdbout.h"