1 /* Output sdb-format symbol table information from GNU compiler.
2 Copyright (C) 1988-2013 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* mike@tredysvr.Tredydev.Unisys.COM says:
21 I modified the struct.c example and have a nm of a .o resulting from the
22 AT&T C compiler. From the example below I would conclude the following:
24 1. All .defs from structures are emitted as scanned. The example below
25 clearly shows the symbol table entries for BoxRec2 are after the first
28 2. All functions and their locals (including statics) are emitted as scanned.
30 3. All nested unnamed union and structure .defs must be emitted before
31 the structure in which they are nested. The AT&T assembler is a
32 one pass beast as far as symbolics are concerned.
34 4. All structure .defs are emitted before the typedefs that refer to them.
36 5. All top level static and external variable definitions are moved to the
37 end of file with all top level statics occurring first before externs.
39 6. All undefined references are at the end of the file.
44 #include "coretypes.h"
51 static GTY(()) tree anonymous_types
;
53 /* Counter to generate unique "names" for nameless struct members. */
55 static GTY(()) int unnamed_struct_number
;
57 /* Declarations whose debug info was deferred till end of compilation. */
59 static GTY(()) vec
<tree
, va_gc
> *deferred_global_decls
;
61 /* The C front end may call sdbout_symbol before sdbout_init runs.
62 We save all such decls in this list and output them when we get
65 static GTY(()) tree preinit_symbols
;
66 static GTY(()) bool sdbout_initialized
;
68 #ifdef SDB_DEBUGGING_INFO
73 #include "insn-config.h"
76 #include "diagnostic-core.h"
79 #include "langhooks.h"
82 /* 1 if PARM is passed to this function in memory. */
84 #define PARM_PASSED_IN_MEMORY(PARM) \
85 (MEM_P (DECL_INCOMING_RTL (PARM)))
87 /* A C expression for the integer offset value of an automatic variable
88 (C_AUTO) having address X (an RTX). */
89 #ifndef DEBUGGER_AUTO_OFFSET
90 #define DEBUGGER_AUTO_OFFSET(X) \
91 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
94 /* A C expression for the integer offset value of an argument (C_ARG)
95 having address X (an RTX). The nominal offset is OFFSET. */
96 #ifndef DEBUGGER_ARG_OFFSET
97 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
100 /* Line number of beginning of current function, minus one.
101 Negative means not in a function or not using sdb. */
103 int sdb_begin_function_line
= -1;
106 extern FILE *asm_out_file
;
108 extern tree current_function_decl
;
112 static void sdbout_init (const char *);
113 static void sdbout_finish (const char *);
114 static void sdbout_start_source_file (unsigned int, const char *);
115 static void sdbout_end_source_file (unsigned int);
116 static void sdbout_begin_block (unsigned int, unsigned int);
117 static void sdbout_end_block (unsigned int, unsigned int);
118 static void sdbout_source_line (unsigned int, const char *, int, bool);
119 static void sdbout_end_epilogue (unsigned int, const char *);
120 static void sdbout_global_decl (tree
);
121 static void sdbout_begin_prologue (unsigned int, const char *);
122 static void sdbout_end_prologue (unsigned int, const char *);
123 static void sdbout_begin_function (tree
);
124 static void sdbout_end_function (unsigned int);
125 static void sdbout_toplevel_data (tree
);
126 static void sdbout_label (rtx
);
127 static char *gen_fake_label (void);
128 static int plain_type (tree
);
129 static int template_name_p (tree
);
130 static void sdbout_record_type_name (tree
);
131 static int plain_type_1 (tree
, int);
132 static void sdbout_block (tree
);
133 static void sdbout_syms (tree
);
134 #ifdef SDB_ALLOW_FORWARD_REFERENCES
135 static void sdbout_queue_anonymous_type (tree
);
136 static void sdbout_dequeue_anonymous_types (void);
138 static void sdbout_type (tree
);
139 static void sdbout_field_types (tree
);
140 static void sdbout_one_type (tree
);
141 static void sdbout_parms (tree
);
142 static void sdbout_reg_parms (tree
);
143 static void sdbout_global_decl (tree
);
145 /* Random macros describing parts of SDB data. */
147 /* Default value of delimiter is ";". */
149 #define SDB_DELIM ";"
152 /* Maximum number of dimensions the assembler will allow. */
154 #define SDB_MAX_DIM 4
158 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
161 #ifndef PUT_SDB_INT_VAL
162 #define PUT_SDB_INT_VAL(a) \
164 fprintf (asm_out_file, "\t.val\t" HOST_WIDE_INT_PRINT_DEC "%s", \
165 (HOST_WIDE_INT) (a), SDB_DELIM); \
171 #define PUT_SDB_VAL(a) \
172 ( fputs ("\t.val\t", asm_out_file), \
173 output_addr_const (asm_out_file, (a)), \
174 fprintf (asm_out_file, SDB_DELIM))
178 #define PUT_SDB_DEF(a) \
179 do { fprintf (asm_out_file, "\t.def\t"); \
180 assemble_name (asm_out_file, a); \
181 fprintf (asm_out_file, SDB_DELIM); } while (0)
184 #ifndef PUT_SDB_PLAIN_DEF
185 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
188 #ifndef PUT_SDB_ENDEF
189 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
193 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
197 #define PUT_SDB_SIZE(a) \
199 fprintf (asm_out_file, "\t.size\t" HOST_WIDE_INT_PRINT_DEC "%s", \
200 (HOST_WIDE_INT) (a), SDB_DELIM); \
204 #ifndef PUT_SDB_START_DIM
205 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
208 #ifndef PUT_SDB_NEXT_DIM
209 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
212 #ifndef PUT_SDB_LAST_DIM
213 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
217 #define PUT_SDB_TAG(a) \
218 do { fprintf (asm_out_file, "\t.tag\t"); \
219 assemble_name (asm_out_file, a); \
220 fprintf (asm_out_file, SDB_DELIM); } while (0)
223 #ifndef PUT_SDB_BLOCK_START
224 #define PUT_SDB_BLOCK_START(LINE) \
225 fprintf (asm_out_file, \
226 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
227 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
230 #ifndef PUT_SDB_BLOCK_END
231 #define PUT_SDB_BLOCK_END(LINE) \
232 fprintf (asm_out_file, \
233 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
234 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
237 #ifndef PUT_SDB_FUNCTION_START
238 #define PUT_SDB_FUNCTION_START(LINE) \
239 fprintf (asm_out_file, \
240 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
241 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
244 #ifndef PUT_SDB_FUNCTION_END
245 #define PUT_SDB_FUNCTION_END(LINE) \
246 fprintf (asm_out_file, \
247 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
248 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
251 /* Return the sdb tag identifier string for TYPE
252 if TYPE has already been defined; otherwise return a null pointer. */
254 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
256 /* Set the sdb tag identifier string for TYPE to NAME. */
258 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
259 TYPE_SYMTAB_POINTER (TYPE) = (const char *)(NAME)
261 /* Return the name (a string) of the struct, union or enum tag
262 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
264 #define TAG_NAME(link) \
265 (((link) && TREE_PURPOSE ((link)) \
266 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
267 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
269 /* Ensure we don't output a negative line number. */
270 #define MAKE_LINE_SAFE(line) \
271 if ((int) line <= sdb_begin_function_line) \
272 line = sdb_begin_function_line + 1
274 /* The debug hooks structure. */
275 const struct gcc_debug_hooks sdb_debug_hooks
=
277 sdbout_init
, /* init */
278 sdbout_finish
, /* finish */
279 debug_nothing_void
, /* assembly_start */
280 debug_nothing_int_charstar
, /* define */
281 debug_nothing_int_charstar
, /* undef */
282 sdbout_start_source_file
, /* start_source_file */
283 sdbout_end_source_file
, /* end_source_file */
284 sdbout_begin_block
, /* begin_block */
285 sdbout_end_block
, /* end_block */
286 debug_true_const_tree
, /* ignore_block */
287 sdbout_source_line
, /* source_line */
288 sdbout_begin_prologue
, /* begin_prologue */
289 debug_nothing_int_charstar
, /* end_prologue */
290 debug_nothing_int_charstar
, /* begin_epilogue */
291 sdbout_end_epilogue
, /* end_epilogue */
292 sdbout_begin_function
, /* begin_function */
293 sdbout_end_function
, /* end_function */
294 debug_nothing_tree
, /* function_decl */
295 sdbout_global_decl
, /* global_decl */
296 sdbout_symbol
, /* type_decl */
297 debug_nothing_tree_tree_tree_bool
, /* imported_module_or_decl */
298 debug_nothing_tree
, /* deferred_inline_function */
299 debug_nothing_tree
, /* outlining_inline_function */
300 sdbout_label
, /* label */
301 debug_nothing_int
, /* handle_pch */
302 debug_nothing_rtx
, /* var_location */
303 debug_nothing_void
, /* switch_text_section */
304 debug_nothing_tree_tree
, /* set_name */
305 0, /* start_end_main_source_file */
306 TYPE_SYMTAB_IS_POINTER
/* tree_type_symtab_field */
309 /* Return a unique string to name an anonymous type. */
312 gen_fake_label (void)
316 sprintf (label
, ".%dfake", unnamed_struct_number
);
317 unnamed_struct_number
++;
318 labelstr
= xstrdup (label
);
322 /* Return the number which describes TYPE for SDB.
323 For pointers, etc., this function is recursive.
324 Each record, union or enumeral type must already have had a
325 tag number output. */
327 /* The number is given by d6d5d4d3d2d1bbbb
328 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
329 Thus, char *foo () has bbbb=T_CHAR
332 N_BTMASK= 017 1111 basic type field.
333 N_TSHIFT= 2 derived type shift
334 N_BTSHFT= 4 Basic type shift */
336 /* Produce the number that describes a pointer, function or array type.
337 PREV is the number describing the target, value or element type.
338 DT_type describes how to transform that type. */
339 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
340 ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \
341 | ((int) DT_type << (int) N_BTSHFT) \
342 | ((PREV) & (int) N_BTMASK))
344 /* Number of elements used in sdb_dims. */
345 static int sdb_n_dims
= 0;
347 /* Table of array dimensions of current type. */
348 static int sdb_dims
[SDB_MAX_DIM
];
350 /* Size of outermost array currently being processed. */
351 static int sdb_type_size
= -1;
354 plain_type (tree type
)
356 int val
= plain_type_1 (type
, 0);
358 /* If we have already saved up some array dimensions, print them now. */
363 for (i
= sdb_n_dims
- 1; i
> 0; i
--)
364 PUT_SDB_NEXT_DIM (sdb_dims
[i
]);
365 PUT_SDB_LAST_DIM (sdb_dims
[0]);
368 sdb_type_size
= int_size_in_bytes (type
);
369 /* Don't kill sdb if type is not laid out or has variable size. */
370 if (sdb_type_size
< 0)
373 /* If we have computed the size of an array containing this type,
375 if (sdb_type_size
>= 0)
377 PUT_SDB_SIZE (sdb_type_size
);
384 template_name_p (tree name
)
386 const char *ptr
= IDENTIFIER_POINTER (name
);
387 while (*ptr
&& *ptr
!= '<')
394 sdbout_record_type_name (tree type
)
396 const char *name
= 0;
399 if (KNOWN_TYPE_TAG (type
))
402 if (TYPE_NAME (type
) != 0)
406 /* Find the IDENTIFIER_NODE for the type name. */
407 if (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
)
408 t
= TYPE_NAME (type
);
409 else if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
411 t
= DECL_NAME (TYPE_NAME (type
));
412 /* The DECL_NAME for templates includes "<>", which breaks
413 most assemblers. Use its assembler name instead, which
414 has been mangled into being safe. */
415 if (t
&& template_name_p (t
))
416 t
= DECL_ASSEMBLER_NAME (TYPE_NAME (type
));
419 /* Now get the name as a string, or invent one. */
421 name
= IDENTIFIER_POINTER (t
);
424 no_name
= (name
== 0 || *name
== 0);
426 name
= gen_fake_label ();
428 SET_KNOWN_TYPE_TAG (type
, name
);
429 #ifdef SDB_ALLOW_FORWARD_REFERENCES
431 sdbout_queue_anonymous_type (type
);
435 /* Return the .type value for type TYPE.
437 LEVEL indicates how many levels deep we have recursed into the type.
438 The SDB debug format can only represent 6 derived levels of types.
439 After that, we must output inaccurate debug info. We deliberately
440 stop before the 7th level, so that ADA recursive types will not give an
444 plain_type_1 (tree type
, int level
)
447 type
= void_type_node
;
448 else if (type
== error_mark_node
)
449 type
= integer_type_node
;
451 type
= TYPE_MAIN_VARIANT (type
);
453 switch (TREE_CODE (type
))
461 int size
= int_size_in_bytes (type
) * BITS_PER_UNIT
;
463 /* Carefully distinguish all the standard types of C,
464 without messing up if the language is not C.
465 Note that we check only for the names that contain spaces;
466 other names might occur by coincidence in other languages. */
467 if (TYPE_NAME (type
) != 0
468 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
469 && DECL_NAME (TYPE_NAME (type
)) != 0
470 && TREE_CODE (DECL_NAME (TYPE_NAME (type
))) == IDENTIFIER_NODE
)
472 const char *const name
473 = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type
)));
475 if (!strcmp (name
, "char"))
477 if (!strcmp (name
, "unsigned char"))
479 if (!strcmp (name
, "signed char"))
481 if (!strcmp (name
, "int"))
483 if (!strcmp (name
, "unsigned int"))
485 if (!strcmp (name
, "short int"))
487 if (!strcmp (name
, "short unsigned int"))
489 if (!strcmp (name
, "long int"))
491 if (!strcmp (name
, "long unsigned int"))
495 if (size
== INT_TYPE_SIZE
)
496 return (TYPE_UNSIGNED (type
) ? T_UINT
: T_INT
);
497 if (size
== CHAR_TYPE_SIZE
)
498 return (TYPE_UNSIGNED (type
) ? T_UCHAR
: T_CHAR
);
499 if (size
== SHORT_TYPE_SIZE
)
500 return (TYPE_UNSIGNED (type
) ? T_USHORT
: T_SHORT
);
501 if (size
== LONG_TYPE_SIZE
)
502 return (TYPE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
503 if (size
== LONG_LONG_TYPE_SIZE
) /* better than nothing */
504 return (TYPE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
510 int precision
= TYPE_PRECISION (type
);
511 if (precision
== FLOAT_TYPE_SIZE
)
513 if (precision
== DOUBLE_TYPE_SIZE
)
515 #ifdef EXTENDED_SDB_BASIC_TYPES
516 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
519 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
520 return T_DOUBLE
; /* better than nothing */
531 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
532 if (sdb_n_dims
< SDB_MAX_DIM
)
533 sdb_dims
[sdb_n_dims
++]
534 = (TYPE_DOMAIN (type
)
535 && TYPE_MIN_VALUE (TYPE_DOMAIN (type
)) != 0
536 && TYPE_MAX_VALUE (TYPE_DOMAIN (type
)) != 0
537 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)), 0)
538 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type
)), 0)
539 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)), 0)
540 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type
)), 0) + 1)
543 return PUSH_DERIVED_LEVEL (DT_ARY
, m
);
548 case QUAL_UNION_TYPE
:
552 #ifdef SDB_ALLOW_FORWARD_REFERENCES
553 sdbout_record_type_name (type
);
555 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
556 if ((TREE_ASM_WRITTEN (type
) && KNOWN_TYPE_TAG (type
) != 0)
557 #ifdef SDB_ALLOW_FORWARD_REFERENCES
558 || TYPE_MODE (type
) != VOIDmode
563 /* Output the referenced structure tag name
564 only if the .def has already been finished.
565 At least on 386, the Unix assembler
566 cannot handle forward references to tags. */
567 /* But the 88100, it requires them, sigh... */
568 /* And the MIPS requires unknown refs as well... */
569 tag
= KNOWN_TYPE_TAG (type
);
571 /* These 3 lines used to follow the close brace.
572 However, a size of 0 without a tag implies a tag of 0,
573 so if we don't know a tag, we can't mention the size. */
574 sdb_type_size
= int_size_in_bytes (type
);
575 if (sdb_type_size
< 0)
578 return ((TREE_CODE (type
) == RECORD_TYPE
) ? T_STRUCT
579 : (TREE_CODE (type
) == UNION_TYPE
) ? T_UNION
580 : (TREE_CODE (type
) == QUAL_UNION_TYPE
) ? T_UNION
590 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
591 return PUSH_DERIVED_LEVEL (DT_PTR
, m
);
600 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
601 return PUSH_DERIVED_LEVEL (DT_FCN
, m
);
608 /* Output the symbols defined in block number DO_BLOCK.
610 This function works by walking the tree structure of blocks,
611 counting blocks until it finds the desired block. */
613 static int do_block
= 0;
616 sdbout_block (tree block
)
620 /* Ignore blocks never expanded or otherwise marked as real. */
621 if (TREE_USED (block
))
623 /* When we reach the specified block, output its symbols. */
624 if (BLOCK_NUMBER (block
) == do_block
)
625 sdbout_syms (BLOCK_VARS (block
));
627 /* If we are past the specified block, stop the scan. */
628 if (BLOCK_NUMBER (block
) > do_block
)
631 /* Scan the blocks within this block. */
632 sdbout_block (BLOCK_SUBBLOCKS (block
));
635 block
= BLOCK_CHAIN (block
);
639 /* Call sdbout_symbol on each decl in the chain SYMS. */
642 sdbout_syms (tree syms
)
646 if (TREE_CODE (syms
) != LABEL_DECL
)
647 sdbout_symbol (syms
, 1);
648 syms
= TREE_CHAIN (syms
);
652 /* Output SDB information for a symbol described by DECL.
653 LOCAL is nonzero if the symbol is not file-scope. */
656 sdbout_symbol (tree decl
, int local
)
658 tree type
= TREE_TYPE (decl
);
659 tree context
= NULL_TREE
;
664 /* If we are called before sdbout_init is run, just save the symbol
666 if (!sdbout_initialized
)
668 preinit_symbols
= tree_cons (0, decl
, preinit_symbols
);
672 sdbout_one_type (type
);
674 switch (TREE_CODE (decl
))
677 /* Enum values are defined by defining the enum type. */
681 /* Don't mention a nested function under its parent. */
682 context
= decl_function_context (decl
);
683 if (context
== current_function_decl
)
685 /* Check DECL_INITIAL to distinguish declarations from definitions.
686 Don't output debug info here for declarations; they will have
687 a DECL_INITIAL value of 0. */
688 if (! DECL_INITIAL (decl
))
690 if (!MEM_P (DECL_RTL (decl
))
691 || GET_CODE (XEXP (DECL_RTL (decl
), 0)) != SYMBOL_REF
)
693 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
694 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
695 PUT_SDB_SCL (TREE_PUBLIC (decl
) ? C_EXT
: C_STAT
);
699 /* Done with tagged types. */
700 if (DECL_NAME (decl
) == 0)
702 if (DECL_IGNORED_P (decl
))
704 /* Don't output intrinsic types. GAS chokes on SDB .def
705 statements that contain identifiers with embedded spaces
706 (eg "unsigned long"). */
707 if (DECL_IS_BUILTIN (decl
))
710 /* Output typedef name. */
711 if (template_name_p (DECL_NAME (decl
)))
712 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
714 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl
)));
715 PUT_SDB_SCL (C_TPDEF
);
719 /* Parm decls go in their own separate chains
720 and are output by sdbout_reg_parms and sdbout_parms. */
724 /* Don't mention a variable that is external.
725 Let the file that defines it describe it. */
726 if (DECL_EXTERNAL (decl
))
729 /* Ignore __FUNCTION__, etc. */
730 if (DECL_IGNORED_P (decl
))
733 /* If there was an error in the declaration, don't dump core
734 if there is no RTL associated with the variable doesn't
736 if (!DECL_RTL_SET_P (decl
))
740 eliminate_regs (DECL_RTL (decl
), VOIDmode
, NULL_RTX
));
741 #ifdef LEAF_REG_REMAP
742 if (crtl
->uses_only_leaf_regs
)
743 leaf_renumber_regs_insn (DECL_RTL (decl
));
745 value
= DECL_RTL (decl
);
747 /* Don't mention a variable at all
748 if it was completely optimized into nothingness.
750 If DECL was from an inline function, then its rtl
751 is not identically the rtl that was used in this
752 particular compilation. */
755 regno
= REGNO (value
);
756 if (regno
>= FIRST_PSEUDO_REGISTER
)
759 else if (GET_CODE (value
) == SUBREG
)
761 while (GET_CODE (value
) == SUBREG
)
762 value
= SUBREG_REG (value
);
765 if (REGNO (value
) >= FIRST_PSEUDO_REGISTER
)
768 regno
= REGNO (alter_subreg (&value
, true));
769 SET_DECL_RTL (decl
, value
);
771 /* Don't output anything if an auto variable
772 gets RTL that is static.
773 GAS version 2.2 can't handle such output. */
774 else if (MEM_P (value
) && CONSTANT_P (XEXP (value
, 0))
775 && ! TREE_STATIC (decl
))
778 /* Emit any structure, union, or enum type that has not been output.
779 This occurs for tag-less structs (et al) used to declare variables
781 if (TREE_CODE (type
) == ENUMERAL_TYPE
782 || TREE_CODE (type
) == RECORD_TYPE
783 || TREE_CODE (type
) == UNION_TYPE
784 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
786 if (COMPLETE_TYPE_P (type
) /* not a forward reference */
787 && KNOWN_TYPE_TAG (type
) == 0) /* not yet declared */
788 sdbout_one_type (type
);
791 /* Defer SDB information for top-level initialized variables! */
794 && DECL_INITIAL (decl
))
797 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
798 For now, avoid crashing. */
799 if (DECL_NAME (decl
) == NULL_TREE
)
802 /* Record the name for, starting a symtab entry. */
804 name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
806 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
));
809 && GET_CODE (XEXP (value
, 0)) == SYMBOL_REF
)
812 if (TREE_PUBLIC (decl
))
814 PUT_SDB_VAL (XEXP (value
, 0));
819 PUT_SDB_VAL (XEXP (value
, 0));
820 PUT_SDB_SCL (C_STAT
);
826 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno
));
829 else if (MEM_P (value
)
830 && (MEM_P (XEXP (value
, 0))
831 || (REG_P (XEXP (value
, 0))
832 && REGNO (XEXP (value
, 0)) != HARD_FRAME_POINTER_REGNUM
833 && REGNO (XEXP (value
, 0)) != STACK_POINTER_REGNUM
)))
834 /* If the value is indirect by memory or by a register
835 that isn't the frame pointer
836 then it means the object is variable-sized and address through
837 that register or stack slot. COFF has no way to represent this
838 so all we can do is output the variable as a pointer. */
841 if (REG_P (XEXP (value
, 0)))
843 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value
, 0))));
848 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
850 We want the value of that CONST_INT. */
851 /* Encore compiler hates a newline in a macro arg, it seems. */
852 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
853 (XEXP (XEXP (value
, 0), 0)));
854 PUT_SDB_SCL (C_AUTO
);
857 /* Effectively do build_pointer_type, but don't cache this type,
858 since it might be temporary whereas the type it points to
859 might have been saved for inlining. */
860 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
861 type
= make_node (POINTER_TYPE
);
862 TREE_TYPE (type
) = TREE_TYPE (decl
);
864 else if (MEM_P (value
)
865 && ((GET_CODE (XEXP (value
, 0)) == PLUS
866 && REG_P (XEXP (XEXP (value
, 0), 0))
867 && CONST_INT_P (XEXP (XEXP (value
, 0), 1)))
868 /* This is for variables which are at offset zero from
869 the frame pointer. This happens on the Alpha.
870 Non-frame pointer registers are excluded above. */
871 || (REG_P (XEXP (value
, 0)))))
873 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
874 or (MEM (REG...)). We want the value of that CONST_INT
877 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value
, 0)));
878 PUT_SDB_SCL (C_AUTO
);
882 /* It is something we don't know how to represent for SDB. */
890 PUT_SDB_TYPE (plain_type (type
));
894 /* Output SDB information for a top-level initialized variable
895 that has been delayed. */
898 sdbout_toplevel_data (tree decl
)
900 tree type
= TREE_TYPE (decl
);
902 if (DECL_IGNORED_P (decl
))
905 gcc_assert (TREE_CODE (decl
) == VAR_DECL
);
906 gcc_assert (MEM_P (DECL_RTL (decl
)));
907 gcc_assert (DECL_INITIAL (decl
));
909 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
910 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
911 if (TREE_PUBLIC (decl
))
917 PUT_SDB_SCL (C_STAT
);
919 PUT_SDB_TYPE (plain_type (type
));
923 #ifdef SDB_ALLOW_FORWARD_REFERENCES
925 /* Machinery to record and output anonymous types. */
928 sdbout_queue_anonymous_type (tree type
)
930 anonymous_types
= tree_cons (NULL_TREE
, type
, anonymous_types
);
934 sdbout_dequeue_anonymous_types (void)
938 while (anonymous_types
)
940 types
= nreverse (anonymous_types
);
941 anonymous_types
= NULL_TREE
;
943 for (link
= types
; link
; link
= TREE_CHAIN (link
))
945 tree type
= TREE_VALUE (link
);
947 if (type
&& ! TREE_ASM_WRITTEN (type
))
948 sdbout_one_type (type
);
955 /* Given a chain of ..._TYPE nodes, all of which have names,
956 output definitions of those names, as typedefs. */
959 sdbout_types (tree types
)
963 for (link
= types
; link
; link
= TREE_CHAIN (link
))
964 sdbout_one_type (link
);
966 #ifdef SDB_ALLOW_FORWARD_REFERENCES
967 sdbout_dequeue_anonymous_types ();
972 sdbout_type (tree type
)
974 if (type
== error_mark_node
)
975 type
= integer_type_node
;
976 PUT_SDB_TYPE (plain_type (type
));
979 /* Output types of the fields of type TYPE, if they are structs.
981 Formerly did not chase through pointer types, since that could be circular.
982 They must come before TYPE, since forward refs are not allowed.
983 Now james@bigtex.cactus.org says to try them. */
986 sdbout_field_types (tree type
)
990 for (tail
= TYPE_FIELDS (type
); tail
; tail
= TREE_CHAIN (tail
))
991 /* This condition should match the one for emitting the actual
993 if (TREE_CODE (tail
) == FIELD_DECL
996 && host_integerp (DECL_SIZE (tail
), 1)
997 && host_integerp (bit_position (tail
), 0))
999 if (POINTER_TYPE_P (TREE_TYPE (tail
)))
1000 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail
)));
1002 sdbout_one_type (TREE_TYPE (tail
));
1006 /* Use this to put out the top level defined record and union types
1007 for later reference. If this is a struct with a name, then put that
1008 name out. Other unnamed structs will have .xxfake labels generated so
1009 that they may be referred to later.
1010 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1011 It may NOT be called recursively. */
1014 sdbout_one_type (tree type
)
1016 if (current_function_decl
!= NULL_TREE
1017 && DECL_SECTION_NAME (current_function_decl
) != NULL_TREE
)
1018 ; /* Don't change section amid function. */
1020 switch_to_section (current_function_section ());
1022 switch (TREE_CODE (type
))
1026 case QUAL_UNION_TYPE
:
1028 type
= TYPE_MAIN_VARIANT (type
);
1029 /* Don't output a type twice. */
1030 if (TREE_ASM_WRITTEN (type
))
1031 /* James said test TREE_ASM_BEING_WRITTEN here. */
1034 /* Output nothing if type is not yet defined. */
1035 if (!COMPLETE_TYPE_P (type
))
1038 TREE_ASM_WRITTEN (type
) = 1;
1040 /* This is reputed to cause trouble with the following case,
1041 but perhaps checking TYPE_SIZE above will fix it. */
1043 /* Here is a testcase:
1049 typedef struct intermediate {
1053 typedef struct badstr {
1057 /* This change, which ought to make better output,
1058 used to make the COFF assembler unhappy.
1059 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1060 /* Before really doing anything, output types we want to refer to. */
1061 /* Note that in version 1 the following two lines
1062 are not used if forward references are in use. */
1063 if (TREE_CODE (type
) != ENUMERAL_TYPE
)
1064 sdbout_field_types (type
);
1066 /* Output a structure type. */
1068 int size
= int_size_in_bytes (type
);
1072 /* Record the type tag, but not in its permanent place just yet. */
1073 sdbout_record_type_name (type
);
1075 PUT_SDB_DEF (KNOWN_TYPE_TAG (type
));
1077 switch (TREE_CODE (type
))
1080 case QUAL_UNION_TYPE
:
1081 PUT_SDB_SCL (C_UNTAG
);
1082 PUT_SDB_TYPE (T_UNION
);
1087 PUT_SDB_SCL (C_STRTAG
);
1088 PUT_SDB_TYPE (T_STRUCT
);
1093 PUT_SDB_SCL (C_ENTAG
);
1094 PUT_SDB_TYPE (T_ENUM
);
1102 PUT_SDB_SIZE (size
);
1105 /* Print out the base class information with fields
1106 named after the types they hold. */
1107 /* This is only relevant to aggregate types. TYPE_BINFO is used
1108 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1110 if (TREE_CODE (type
) != ENUMERAL_TYPE
&& TYPE_BINFO (type
))
1115 for (binfo
= TYPE_BINFO (type
), i
= 0;
1116 BINFO_BASE_ITERATE (binfo
, i
, child
); i
++)
1118 tree child_type
= BINFO_TYPE (child
);
1119 tree child_type_name
;
1121 if (TYPE_NAME (child_type
) == 0)
1123 if (TREE_CODE (TYPE_NAME (child_type
)) == IDENTIFIER_NODE
)
1124 child_type_name
= TYPE_NAME (child_type
);
1125 else if (TREE_CODE (TYPE_NAME (child_type
)) == TYPE_DECL
)
1127 child_type_name
= DECL_NAME (TYPE_NAME (child_type
));
1128 if (child_type_name
&& template_name_p (child_type_name
))
1130 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type
));
1135 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name
));
1136 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child
), 0));
1137 PUT_SDB_SCL (member_scl
);
1138 sdbout_type (BINFO_TYPE (child
));
1143 /* Output the individual fields. */
1145 if (TREE_CODE (type
) == ENUMERAL_TYPE
)
1147 for (tem
= TYPE_VALUES (type
); tem
; tem
= TREE_CHAIN (tem
))
1149 tree value
= TREE_VALUE (tem
);
1151 if (TREE_CODE (value
) == CONST_DECL
)
1152 value
= DECL_INITIAL (value
);
1154 if (host_integerp (value
, 0))
1156 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem
)));
1157 PUT_SDB_INT_VAL (tree_low_cst (value
, 0));
1158 PUT_SDB_SCL (C_MOE
);
1159 PUT_SDB_TYPE (T_MOE
);
1164 else /* record or union type */
1165 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
1166 /* Output the name, type, position (in bits), size (in bits)
1169 /* Omit here the nameless fields that are used to skip bits.
1170 Also omit fields with variable size or position.
1171 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1172 if (TREE_CODE (tem
) == FIELD_DECL
1175 && host_integerp (DECL_SIZE (tem
), 1)
1176 && host_integerp (bit_position (tem
), 0))
1180 name
= IDENTIFIER_POINTER (DECL_NAME (tem
));
1182 if (DECL_BIT_FIELD_TYPE (tem
))
1184 PUT_SDB_INT_VAL (int_bit_position (tem
));
1185 PUT_SDB_SCL (C_FIELD
);
1186 sdbout_type (DECL_BIT_FIELD_TYPE (tem
));
1187 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem
), 1));
1191 PUT_SDB_INT_VAL (int_bit_position (tem
) / BITS_PER_UNIT
);
1192 PUT_SDB_SCL (member_scl
);
1193 sdbout_type (TREE_TYPE (tem
));
1197 /* Output end of a structure,union, or enumeral definition. */
1199 PUT_SDB_PLAIN_DEF ("eos");
1200 PUT_SDB_INT_VAL (size
);
1201 PUT_SDB_SCL (C_EOS
);
1202 PUT_SDB_TAG (KNOWN_TYPE_TAG (type
));
1203 PUT_SDB_SIZE (size
);
1213 /* The following two functions output definitions of function parameters.
1214 Each parameter gets a definition locating it in the parameter list.
1215 Each parameter that is a register variable gets a second definition
1216 locating it in the register.
1218 Printing or argument lists in gdb uses the definitions that
1219 locate in the parameter list. But reference to the variable in
1220 expressions uses preferentially the definition as a register. */
1222 /* Output definitions, referring to storage in the parmlist,
1223 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1226 sdbout_parms (tree parms
)
1228 for (; parms
; parms
= TREE_CHAIN (parms
))
1229 if (DECL_NAME (parms
)
1230 && TREE_TYPE (parms
) != error_mark_node
1231 && DECL_RTL_SET_P (parms
)
1232 && DECL_INCOMING_RTL (parms
))
1234 int current_sym_value
= 0;
1235 const char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1237 if (name
== 0 || *name
== 0)
1238 name
= gen_fake_label ();
1240 /* Perform any necessary register eliminations on the parameter's rtl,
1241 so that the debugging output will be accurate. */
1242 DECL_INCOMING_RTL (parms
)
1243 = eliminate_regs (DECL_INCOMING_RTL (parms
), VOIDmode
, NULL_RTX
);
1244 SET_DECL_RTL (parms
,
1245 eliminate_regs (DECL_RTL (parms
), VOIDmode
, NULL_RTX
));
1247 if (PARM_PASSED_IN_MEMORY (parms
))
1249 rtx addr
= XEXP (DECL_INCOMING_RTL (parms
), 0);
1252 /* ??? Here we assume that the parm address is indexed
1253 off the frame pointer or arg pointer.
1254 If that is not true, we produce meaningless results,
1255 but do not crash. */
1256 if (GET_CODE (addr
) == PLUS
1257 && CONST_INT_P (XEXP (addr
, 1)))
1258 current_sym_value
= INTVAL (XEXP (addr
, 1));
1260 current_sym_value
= 0;
1262 if (REG_P (DECL_RTL (parms
))
1263 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1264 type
= DECL_ARG_TYPE (parms
);
1267 int original_sym_value
= current_sym_value
;
1269 /* This is the case where the parm is passed as an int or
1270 double and it is converted to a char, short or float
1271 and stored back in the parmlist. In this case, describe
1272 the parm with the variable's declared type, and adjust
1273 the address if the least significant bytes (which we are
1274 using) are not the first ones. */
1275 if (BYTES_BIG_ENDIAN
1276 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1277 current_sym_value
+=
1278 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1279 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1281 if (MEM_P (DECL_RTL (parms
))
1282 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1283 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1285 && (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1286 == current_sym_value
))
1287 type
= TREE_TYPE (parms
);
1290 current_sym_value
= original_sym_value
;
1291 type
= DECL_ARG_TYPE (parms
);
1296 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
, addr
));
1297 PUT_SDB_SCL (C_ARG
);
1298 PUT_SDB_TYPE (plain_type (type
));
1301 else if (REG_P (DECL_RTL (parms
)))
1304 /* Parm passed in registers and lives in registers or nowhere. */
1306 /* If parm lives in a register, use that register;
1307 pretend the parm was passed there. It would be more consistent
1308 to describe the register where the parm was passed,
1309 but in practice that register usually holds something else. */
1310 if (REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1311 best_rtl
= DECL_RTL (parms
);
1312 /* If the parm lives nowhere,
1313 use the register where it was passed. */
1315 best_rtl
= DECL_INCOMING_RTL (parms
);
1318 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl
)));
1319 PUT_SDB_SCL (C_REGPARM
);
1320 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1323 else if (MEM_P (DECL_RTL (parms
))
1324 && XEXP (DECL_RTL (parms
), 0) != const0_rtx
)
1326 /* Parm was passed in registers but lives on the stack. */
1328 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1329 in which case we want the value of that CONST_INT,
1330 or (MEM (REG ...)) or (MEM (MEM ...)),
1331 in which case we use a value of zero. */
1332 if (REG_P (XEXP (DECL_RTL (parms
), 0))
1333 || MEM_P (XEXP (DECL_RTL (parms
), 0)))
1334 current_sym_value
= 0;
1336 current_sym_value
= INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1));
1338 /* Again, this assumes the offset is based on the arg pointer. */
1340 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
,
1341 XEXP (DECL_RTL (parms
), 0)));
1342 PUT_SDB_SCL (C_ARG
);
1343 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1349 /* Output definitions for the places where parms live during the function,
1350 when different from where they were passed, when the parms were passed
1353 It is not useful to do this for parms passed in registers
1354 that live during the function in different registers, because it is
1355 impossible to look in the passed register for the passed value,
1356 so we use the within-the-function register to begin with.
1358 PARMS is a chain of PARM_DECL nodes. */
1361 sdbout_reg_parms (tree parms
)
1363 for (; parms
; parms
= TREE_CHAIN (parms
))
1364 if (DECL_NAME (parms
)
1365 && TREE_TYPE (parms
) != error_mark_node
1366 && DECL_RTL_SET_P (parms
)
1367 && DECL_INCOMING_RTL (parms
))
1369 const char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1371 /* Report parms that live in registers during the function
1372 but were passed in memory. */
1373 if (REG_P (DECL_RTL (parms
))
1374 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
1375 && PARM_PASSED_IN_MEMORY (parms
))
1377 if (name
== 0 || *name
== 0)
1378 name
= gen_fake_label ();
1380 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms
))));
1381 PUT_SDB_SCL (C_REG
);
1382 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1385 /* Report parms that live in memory but not where they were passed. */
1386 else if (MEM_P (DECL_RTL (parms
))
1387 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1388 && CONST_INT_P (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1389 && PARM_PASSED_IN_MEMORY (parms
)
1390 && ! rtx_equal_p (DECL_RTL (parms
), DECL_INCOMING_RTL (parms
)))
1392 #if 0 /* ??? It is not clear yet what should replace this. */
1393 int offset
= DECL_OFFSET (parms
) / BITS_PER_UNIT
;
1394 /* A parm declared char is really passed as an int,
1395 so it occupies the least significant bytes.
1396 On a big-endian machine those are not the low-numbered ones. */
1397 if (BYTES_BIG_ENDIAN
1399 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1400 offset
+= (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1401 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1402 if (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1)) != offset
) {...}
1405 if (name
== 0 || *name
== 0)
1406 name
= gen_fake_label ();
1408 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1409 (XEXP (DECL_RTL (parms
), 0)));
1410 PUT_SDB_SCL (C_AUTO
);
1411 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1418 /* Output debug information for a global DECL. Called from toplev.c
1419 after compilation proper has finished. */
1422 sdbout_global_decl (tree decl
)
1424 if (TREE_CODE (decl
) == VAR_DECL
1425 && !DECL_EXTERNAL (decl
)
1426 && DECL_RTL_SET_P (decl
))
1428 /* The COFF linker can move initialized global vars to the end.
1429 And that can screw up the symbol ordering. Defer those for
1430 sdbout_finish (). */
1431 if (!DECL_INITIAL (decl
) || !TREE_PUBLIC (decl
))
1432 sdbout_symbol (decl
, 0);
1434 vec_safe_push (deferred_global_decls
, decl
);
1436 /* Output COFF information for non-global file-scope initialized
1438 if (DECL_INITIAL (decl
) && MEM_P (DECL_RTL (decl
)))
1439 sdbout_toplevel_data (decl
);
1443 /* Output initialized global vars at the end, in the order of
1444 definition. See comment in sdbout_global_decl. */
1447 sdbout_finish (const char *main_filename ATTRIBUTE_UNUSED
)
1452 FOR_EACH_VEC_SAFE_ELT (deferred_global_decls
, i
, decl
)
1453 sdbout_symbol (decl
, 0);
1456 /* Describe the beginning of an internal block within a function.
1457 Also output descriptions of variables defined in this block.
1459 N is the number of the block, by order of beginning, counting from 1,
1460 and not counting the outermost (function top-level) block.
1461 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1462 if the count starts at 0 for the outermost one. */
1465 sdbout_begin_block (unsigned int line
, unsigned int n
)
1467 tree decl
= current_function_decl
;
1468 MAKE_LINE_SAFE (line
);
1470 /* The SCO compiler does not emit a separate block for the function level
1471 scope, so we avoid it here also. */
1472 PUT_SDB_BLOCK_START (line
- sdb_begin_function_line
);
1476 /* Include the outermost BLOCK's variables in block 1. */
1477 do_block
= BLOCK_NUMBER (DECL_INITIAL (decl
));
1478 sdbout_block (DECL_INITIAL (decl
));
1480 /* If -g1, suppress all the internal symbols of functions
1481 except for arguments. */
1482 if (debug_info_level
!= DINFO_LEVEL_TERSE
)
1485 sdbout_block (DECL_INITIAL (decl
));
1488 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1489 sdbout_dequeue_anonymous_types ();
1493 /* Describe the end line-number of an internal block within a function. */
1496 sdbout_end_block (unsigned int line
, unsigned int n ATTRIBUTE_UNUSED
)
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. */
1503 PUT_SDB_BLOCK_END (line
- sdb_begin_function_line
);
1506 /* Output a line number symbol entry for source file FILENAME and line
1510 sdbout_source_line (unsigned int line
, const char *filename ATTRIBUTE_UNUSED
,
1511 int discriminator ATTRIBUTE_UNUSED
,
1512 bool is_stmt ATTRIBUTE_UNUSED
)
1514 /* COFF relative line numbers must be positive. */
1515 if ((int) line
> sdb_begin_function_line
)
1517 #ifdef SDB_OUTPUT_SOURCE_LINE
1518 SDB_OUTPUT_SOURCE_LINE (asm_out_file
, line
);
1520 fprintf (asm_out_file
, "\t.ln\t%d\n",
1521 ((sdb_begin_function_line
> -1)
1522 ? line
- sdb_begin_function_line
: 1));
1527 /* Output sdb info for the current function name.
1528 Called from assemble_start_function. */
1531 sdbout_begin_function (tree decl ATTRIBUTE_UNUSED
)
1533 sdbout_symbol (current_function_decl
, 0);
1536 /* Called at beginning of function body after prologue. Record the
1537 function's starting line number, so we can output relative line numbers
1538 for the other lines. Describe beginning of outermost block. Also
1539 describe the parameter list. */
1542 sdbout_begin_prologue (unsigned int line
, const char *file ATTRIBUTE_UNUSED
)
1544 sdbout_end_prologue (line
, file
);
1548 sdbout_end_prologue (unsigned int line
, const char *file ATTRIBUTE_UNUSED
)
1550 sdb_begin_function_line
= line
- 1;
1551 PUT_SDB_FUNCTION_START (line
);
1552 sdbout_parms (DECL_ARGUMENTS (current_function_decl
));
1553 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl
));
1556 /* Called at end of function (before epilogue).
1557 Describe end of outermost block. */
1560 sdbout_end_function (unsigned int line
)
1562 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1563 sdbout_dequeue_anonymous_types ();
1566 MAKE_LINE_SAFE (line
);
1567 PUT_SDB_FUNCTION_END (line
- sdb_begin_function_line
);
1569 /* Indicate we are between functions, for line-number output. */
1570 sdb_begin_function_line
= -1;
1573 /* Output sdb info for the absolute end of a function.
1574 Called after the epilogue is output. */
1577 sdbout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED
,
1578 const char *file ATTRIBUTE_UNUSED
)
1580 const char *const name ATTRIBUTE_UNUSED
1581 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl
));
1583 #ifdef PUT_SDB_EPILOGUE_END
1584 PUT_SDB_EPILOGUE_END (name
);
1586 fprintf (asm_out_file
, "\t.def\t");
1587 assemble_name (asm_out_file
, name
);
1588 fprintf (asm_out_file
, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n",
1589 SDB_DELIM
, SDB_DELIM
, SDB_DELIM
);
1593 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1597 sdbout_label (rtx insn
)
1599 PUT_SDB_DEF (LABEL_NAME (insn
));
1601 PUT_SDB_SCL (C_LABEL
);
1602 PUT_SDB_TYPE (T_NULL
);
1606 /* Change to reading from a new source file. */
1609 sdbout_start_source_file (unsigned int line ATTRIBUTE_UNUSED
,
1610 const char *filename ATTRIBUTE_UNUSED
)
1614 /* Revert to reading a previous source file. */
1617 sdbout_end_source_file (unsigned int line ATTRIBUTE_UNUSED
)
1621 /* Set up for SDB output at the start of compilation. */
1624 sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED
)
1628 vec_alloc (deferred_global_decls
, 12);
1630 /* Emit debug information which was queued by sdbout_symbol before
1632 sdbout_initialized
= true;
1634 for (t
= nreverse (preinit_symbols
); t
; t
= TREE_CHAIN (t
))
1635 sdbout_symbol (TREE_VALUE (t
), 0);
1636 preinit_symbols
= 0;
1639 #endif /* SDB_DEBUGGING_INFO */
1641 #include "gt-sdbout.h"