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 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 #ifdef SDB_DEBUGGING_INFO
53 #include "insn-config.h"
62 /* 1 if PARM is passed to this function in memory. */
64 #define PARM_PASSED_IN_MEMORY(PARM) \
65 (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
67 /* A C expression for the integer offset value of an automatic variable
68 (C_AUTO) having address X (an RTX). */
69 #ifndef DEBUGGER_AUTO_OFFSET
70 #define DEBUGGER_AUTO_OFFSET(X) \
71 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
74 /* A C expression for the integer offset value of an argument (C_ARG)
75 having address X (an RTX). The nominal offset is OFFSET. */
76 #ifndef DEBUGGER_ARG_OFFSET
77 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
80 /* Line number of beginning of current function, minus one.
81 Negative means not in a function or not using sdb. */
83 int sdb_begin_function_line
= -1;
85 /* Counter to generate unique "names" for nameless struct members. */
87 static int unnamed_struct_number
= 0;
89 extern FILE *asm_out_file
;
91 extern tree current_function_decl
;
95 static void sdbout_init
PARAMS ((const char *));
96 static void sdbout_finish
PARAMS ((const char *));
97 static void sdbout_start_source_file
PARAMS ((unsigned int, const char *));
98 static void sdbout_end_source_file
PARAMS ((unsigned int));
99 static void sdbout_begin_block
PARAMS ((unsigned int, unsigned int));
100 static void sdbout_end_block
PARAMS ((unsigned int, unsigned int));
101 static void sdbout_source_line
PARAMS ((unsigned int, const char *));
102 static void sdbout_end_epilogue
PARAMS ((void));
103 static void sdbout_global_decl
PARAMS ((tree
));
104 #ifndef MIPS_DEBUGGING_INFO
105 static void sdbout_begin_prologue
PARAMS ((unsigned int, const char *));
107 static void sdbout_end_prologue
PARAMS ((unsigned int));
108 static void sdbout_begin_function
PARAMS ((tree
));
109 static void sdbout_end_function
PARAMS ((unsigned int));
110 static void sdbout_toplevel_data
PARAMS ((tree
));
111 static void sdbout_label
PARAMS ((rtx
));
112 static char *gen_fake_label
PARAMS ((void));
113 static int plain_type
PARAMS ((tree
));
114 static int template_name_p
PARAMS ((tree
));
115 static void sdbout_record_type_name
PARAMS ((tree
));
116 static int plain_type_1
PARAMS ((tree
, int));
117 static void sdbout_block
PARAMS ((tree
));
118 static void sdbout_syms
PARAMS ((tree
));
119 #ifdef SDB_ALLOW_FORWARD_REFERENCES
120 static void sdbout_queue_anonymous_type
PARAMS ((tree
));
121 static void sdbout_dequeue_anonymous_types
PARAMS ((void));
123 static void sdbout_type
PARAMS ((tree
));
124 static void sdbout_field_types
PARAMS ((tree
));
125 static void sdbout_one_type
PARAMS ((tree
));
126 static void sdbout_parms
PARAMS ((tree
));
127 static void sdbout_reg_parms
PARAMS ((tree
));
128 static void sdbout_global_decl
PARAMS ((tree
));
130 /* Random macros describing parts of SDB data. */
132 /* Put something here if lines get too long */
135 /* Default value of delimiter is ";". */
137 #define SDB_DELIM ";"
140 /* Maximum number of dimensions the assembler will allow. */
142 #define SDB_MAX_DIM 4
146 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
149 #ifndef PUT_SDB_INT_VAL
150 #define PUT_SDB_INT_VAL(a) \
152 fputs ("\t.val\t", asm_out_file); \
153 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
154 fprintf (asm_out_file, "%s", SDB_DELIM); \
160 #define PUT_SDB_VAL(a) \
161 ( fputs ("\t.val\t", asm_out_file), \
162 output_addr_const (asm_out_file, (a)), \
163 fprintf (asm_out_file, SDB_DELIM))
167 #define PUT_SDB_DEF(a) \
168 do { fprintf (asm_out_file, "\t.def\t"); \
169 assemble_name (asm_out_file, a); \
170 fprintf (asm_out_file, SDB_DELIM); } while (0)
173 #ifndef PUT_SDB_PLAIN_DEF
174 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
177 #ifndef PUT_SDB_ENDEF
178 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
182 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
186 #define PUT_SDB_SIZE(a) \
188 fputs ("\t.size\t", asm_out_file); \
189 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \
190 fprintf (asm_out_file, "%s", SDB_DELIM); \
194 #ifndef PUT_SDB_START_DIM
195 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
198 #ifndef PUT_SDB_NEXT_DIM
199 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
202 #ifndef PUT_SDB_LAST_DIM
203 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
207 #define PUT_SDB_TAG(a) \
208 do { fprintf (asm_out_file, "\t.tag\t"); \
209 assemble_name (asm_out_file, a); \
210 fprintf (asm_out_file, SDB_DELIM); } while (0)
213 #ifndef PUT_SDB_BLOCK_START
214 #define PUT_SDB_BLOCK_START(LINE) \
215 fprintf (asm_out_file, \
216 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
217 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
220 #ifndef PUT_SDB_BLOCK_END
221 #define PUT_SDB_BLOCK_END(LINE) \
222 fprintf (asm_out_file, \
223 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
224 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
227 #ifndef PUT_SDB_FUNCTION_START
228 #define PUT_SDB_FUNCTION_START(LINE) \
229 fprintf (asm_out_file, \
230 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
231 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
234 #ifndef PUT_SDB_FUNCTION_END
235 #define PUT_SDB_FUNCTION_END(LINE) \
236 fprintf (asm_out_file, \
237 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
238 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
241 #ifndef SDB_GENERATE_FAKE
242 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
243 sprintf ((BUFFER), ".%dfake", (NUMBER));
246 /* Return the sdb tag identifier string for TYPE
247 if TYPE has already been defined; otherwise return a null pointer. */
249 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type)
251 /* Set the sdb tag identifier string for TYPE to NAME. */
253 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
254 TYPE_SYMTAB_POINTER (TYPE) = (NAME)
256 /* Return the name (a string) of the struct, union or enum tag
257 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
259 #define TAG_NAME(link) \
260 (((link) && TREE_PURPOSE ((link)) \
261 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
262 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
264 /* Ensure we don't output a negative line number. */
265 #define MAKE_LINE_SAFE(line) \
266 if ((int) line <= sdb_begin_function_line) \
267 line = sdb_begin_function_line + 1
269 /* Perform linker optimization of merging header file definitions together
270 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a
271 post 960826 version of GAS. Nothing breaks with earlier versions of GAS,
272 the optimization just won't be done. The native assembler already has the
273 necessary support. */
275 #ifdef MIPS_DEBUGGING_INFO
277 #ifndef PUT_SDB_SRC_FILE
278 #define PUT_SDB_SRC_FILE(FILENAME) \
279 output_file_directive (asm_out_file, (FILENAME))
282 /* ECOFF linkers have an optimization that does the same kind of thing as
283 N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the
284 executable. To achieve this, GCC must output a .file for each file
287 /* This is a stack of input files. */
291 struct sdb_file
*next
;
295 /* This is the top of the stack. */
297 static struct sdb_file
*current_file
;
299 #endif /* MIPS_DEBUGGING_INFO */
301 /* The debug hooks structure. */
302 struct gcc_debug_hooks sdb_debug_hooks
=
304 sdbout_init
, /* init */
305 sdbout_finish
, /* finish */
306 debug_nothing_int_charstar
, /* define */
307 debug_nothing_int_charstar
, /* undef */
308 sdbout_start_source_file
, /* start_source_file */
309 sdbout_end_source_file
, /* end_source_file */
310 sdbout_begin_block
, /* begin_block */
311 sdbout_end_block
, /* end_block */
312 debug_true_tree
, /* ignore_block */
313 sdbout_source_line
, /* source_line */
314 #ifdef MIPS_DEBUGGING_INFO
315 /* Defer on MIPS systems so that parameter descriptions follow
317 debug_nothing_int_charstar
, /* begin_prologue */
318 sdbout_end_prologue
, /* end_prologue */
320 sdbout_begin_prologue
, /* begin_prologue */
321 debug_nothing_int
, /* end_prologue */
323 sdbout_end_epilogue
, /* end_epilogue */
324 sdbout_begin_function
, /* begin_function */
325 sdbout_end_function
, /* end_function */
326 debug_nothing_tree
, /* function_decl */
327 sdbout_global_decl
, /* global_decl */
328 debug_nothing_tree
, /* deferred_inline_function */
329 debug_nothing_tree
, /* outlining_inline_function */
335 /* return the tag identifier for type
339 tag_of_ru_type (type
,link
)
342 if (TYPE_SYMTAB_ADDRESS (type
))
343 return TYPE_SYMTAB_ADDRESS (type
);
344 if (link
&& TREE_PURPOSE (link
)
345 && IDENTIFIER_POINTER (TREE_PURPOSE (link
)))
346 TYPE_SYMTAB_ADDRESS (type
) = IDENTIFIER_POINTER (TREE_PURPOSE (link
));
348 return (char *) TYPE_SYMTAB_ADDRESS (type
);
352 /* Return a unique string to name an anonymous type. */
359 SDB_GENERATE_FAKE (label
, unnamed_struct_number
);
360 unnamed_struct_number
++;
361 labelstr
= (char *) permalloc (strlen (label
) + 1);
362 strcpy (labelstr
, label
);
366 /* Return the number which describes TYPE for SDB.
367 For pointers, etc., this function is recursive.
368 Each record, union or enumeral type must already have had a
369 tag number output. */
371 /* The number is given by d6d5d4d3d2d1bbbb
372 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
373 Thus, char *foo () has bbbb=T_CHAR
376 N_BTMASK= 017 1111 basic type field.
377 N_TSHIFT= 2 derived type shift
378 N_BTSHFT= 4 Basic type shift */
380 /* Produce the number that describes a pointer, function or array type.
381 PREV is the number describing the target, value or element type.
382 DT_type describes how to transform that type. */
383 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
384 ((((PREV) & ~(int)N_BTMASK) << (int)N_TSHIFT) \
385 | ((int)DT_type << (int)N_BTSHFT) \
386 | ((PREV) & (int)N_BTMASK))
388 /* Number of elements used in sdb_dims. */
389 static int sdb_n_dims
= 0;
391 /* Table of array dimensions of current type. */
392 static int sdb_dims
[SDB_MAX_DIM
];
394 /* Size of outermost array currently being processed. */
395 static int sdb_type_size
= -1;
401 int val
= plain_type_1 (type
, 0);
403 /* If we have already saved up some array dimensions, print them now. */
408 for (i
= sdb_n_dims
- 1; i
> 0; i
--)
409 PUT_SDB_NEXT_DIM (sdb_dims
[i
]);
410 PUT_SDB_LAST_DIM (sdb_dims
[0]);
413 sdb_type_size
= int_size_in_bytes (type
);
414 /* Don't kill sdb if type is not laid out or has variable size. */
415 if (sdb_type_size
< 0)
418 /* If we have computed the size of an array containing this type,
420 if (sdb_type_size
>= 0)
422 PUT_SDB_SIZE (sdb_type_size
);
429 template_name_p (name
)
432 register const char *ptr
= IDENTIFIER_POINTER (name
);
433 while (*ptr
&& *ptr
!= '<')
440 sdbout_record_type_name (type
)
446 if (KNOWN_TYPE_TAG (type
))
449 if (TYPE_NAME (type
) != 0)
452 /* Find the IDENTIFIER_NODE for the type name. */
453 if (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
)
454 t
= TYPE_NAME (type
);
455 else if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
457 t
= DECL_NAME (TYPE_NAME (type
));
458 /* The DECL_NAME for templates includes "<>", which breaks
459 most assemblers. Use its assembler name instead, which
460 has been mangled into being safe. */
461 if (t
&& template_name_p (t
))
462 t
= DECL_ASSEMBLER_NAME (TYPE_NAME (type
));
465 /* Now get the name as a string, or invent one. */
467 name
= IDENTIFIER_POINTER (t
);
470 no_name
= (name
== 0 || *name
== 0);
472 name
= gen_fake_label ();
474 SET_KNOWN_TYPE_TAG (type
, name
);
475 #ifdef SDB_ALLOW_FORWARD_REFERENCES
477 sdbout_queue_anonymous_type (type
);
481 /* Return the .type value for type TYPE.
483 LEVEL indicates how many levels deep we have recursed into the type.
484 The SDB debug format can only represent 6 derived levels of types.
485 After that, we must output inaccurate debug info. We deliberately
486 stop before the 7th level, so that ADA recursive types will not give an
490 plain_type_1 (type
, level
)
495 type
= void_type_node
;
496 else if (type
== error_mark_node
)
497 type
= integer_type_node
;
499 type
= TYPE_MAIN_VARIANT (type
);
501 switch (TREE_CODE (type
))
508 int size
= int_size_in_bytes (type
) * BITS_PER_UNIT
;
510 /* Carefully distinguish all the standard types of C,
511 without messing up if the language is not C.
512 Note that we check only for the names that contain spaces;
513 other names might occur by coincidence in other languages. */
514 if (TYPE_NAME (type
) != 0
515 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
516 && DECL_NAME (TYPE_NAME (type
)) != 0
517 && TREE_CODE (DECL_NAME (TYPE_NAME (type
))) == IDENTIFIER_NODE
)
519 const char *const name
520 = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type
)));
522 if (!strcmp (name
, "char"))
524 if (!strcmp (name
, "unsigned char"))
526 if (!strcmp (name
, "signed char"))
528 if (!strcmp (name
, "int"))
530 if (!strcmp (name
, "unsigned int"))
532 if (!strcmp (name
, "short int"))
534 if (!strcmp (name
, "short unsigned int"))
536 if (!strcmp (name
, "long int"))
538 if (!strcmp (name
, "long unsigned int"))
542 if (size
== INT_TYPE_SIZE
)
543 return (TREE_UNSIGNED (type
) ? T_UINT
: T_INT
);
544 if (size
== CHAR_TYPE_SIZE
)
545 return (TREE_UNSIGNED (type
) ? T_UCHAR
: T_CHAR
);
546 if (size
== SHORT_TYPE_SIZE
)
547 return (TREE_UNSIGNED (type
) ? T_USHORT
: T_SHORT
);
548 if (size
== LONG_TYPE_SIZE
)
549 return (TREE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
550 if (size
== LONG_LONG_TYPE_SIZE
) /* better than nothing */
551 return (TREE_UNSIGNED (type
) ? T_ULONG
: T_LONG
);
557 int precision
= TYPE_PRECISION (type
);
558 if (precision
== FLOAT_TYPE_SIZE
)
560 if (precision
== DOUBLE_TYPE_SIZE
)
562 #ifdef EXTENDED_SDB_BASIC_TYPES
563 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
566 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
567 return T_DOUBLE
; /* better than nothing */
578 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
579 if (sdb_n_dims
< SDB_MAX_DIM
)
580 sdb_dims
[sdb_n_dims
++]
581 = (TYPE_DOMAIN (type
)
582 && TYPE_MIN_VALUE (TYPE_DOMAIN (type
)) != 0
583 && TYPE_MAX_VALUE (TYPE_DOMAIN (type
)) != 0
584 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)), 0)
585 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type
)), 0)
586 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)), 0)
587 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type
)), 0) + 1)
590 return PUSH_DERIVED_LEVEL (DT_ARY
, m
);
595 case QUAL_UNION_TYPE
:
599 #ifdef SDB_ALLOW_FORWARD_REFERENCES
600 sdbout_record_type_name (type
);
602 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
603 if ((TREE_ASM_WRITTEN (type
) && KNOWN_TYPE_TAG (type
) != 0)
604 #ifdef SDB_ALLOW_FORWARD_REFERENCES
605 || TYPE_MODE (type
) != VOIDmode
610 /* Output the referenced structure tag name
611 only if the .def has already been finished.
612 At least on 386, the Unix assembler
613 cannot handle forward references to tags. */
614 /* But the 88100, it requires them, sigh... */
615 /* And the MIPS requires unknown refs as well... */
616 tag
= KNOWN_TYPE_TAG (type
);
618 /* These 3 lines used to follow the close brace.
619 However, a size of 0 without a tag implies a tag of 0,
620 so if we don't know a tag, we can't mention the size. */
621 sdb_type_size
= int_size_in_bytes (type
);
622 if (sdb_type_size
< 0)
625 return ((TREE_CODE (type
) == RECORD_TYPE
) ? T_STRUCT
626 : (TREE_CODE (type
) == UNION_TYPE
) ? T_UNION
627 : (TREE_CODE (type
) == QUAL_UNION_TYPE
) ? T_UNION
637 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
638 return PUSH_DERIVED_LEVEL (DT_PTR
, m
);
647 m
= plain_type_1 (TREE_TYPE (type
), level
+1);
648 return PUSH_DERIVED_LEVEL (DT_FCN
, m
);
655 /* Output the symbols defined in block number DO_BLOCK.
657 This function works by walking the tree structure of blocks,
658 counting blocks until it finds the desired block. */
660 static int do_block
= 0;
668 /* Ignore blocks never expanded or otherwise marked as real. */
669 if (TREE_USED (block
))
671 /* When we reach the specified block, output its symbols. */
672 if (BLOCK_NUMBER (block
) == do_block
)
673 sdbout_syms (BLOCK_VARS (block
));
675 /* If we are past the specified block, stop the scan. */
676 if (BLOCK_NUMBER (block
) > do_block
)
679 /* Scan the blocks within this block. */
680 sdbout_block (BLOCK_SUBBLOCKS (block
));
683 block
= BLOCK_CHAIN (block
);
687 /* Call sdbout_symbol on each decl in the chain SYMS. */
695 if (TREE_CODE (syms
) != LABEL_DECL
)
696 sdbout_symbol (syms
, 1);
697 syms
= TREE_CHAIN (syms
);
701 /* Output SDB information for a symbol described by DECL.
702 LOCAL is nonzero if the symbol is not file-scope. */
705 sdbout_symbol (decl
, local
)
709 tree type
= TREE_TYPE (decl
);
710 tree context
= NULL_TREE
;
715 sdbout_one_type (type
);
717 #if 0 /* This loses when functions are marked to be ignored,
718 which happens in the C++ front end. */
719 if (DECL_IGNORED_P (decl
))
723 switch (TREE_CODE (decl
))
726 /* Enum values are defined by defining the enum type. */
730 /* Don't mention a nested function under its parent. */
731 context
= decl_function_context (decl
);
732 if (context
== current_function_decl
)
734 /* Check DECL_INITIAL to distinguish declarations from definitions.
735 Don't output debug info here for declarations; they will have
736 a DECL_INITIAL value of 0. */
737 if (! DECL_INITIAL (decl
))
739 if (GET_CODE (DECL_RTL (decl
)) != MEM
740 || GET_CODE (XEXP (DECL_RTL (decl
), 0)) != SYMBOL_REF
)
742 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
743 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
744 PUT_SDB_SCL (TREE_PUBLIC (decl
) ? C_EXT
: C_STAT
);
748 /* Done with tagged types. */
749 if (DECL_NAME (decl
) == 0)
751 if (DECL_IGNORED_P (decl
))
754 /* Output typedef name. */
755 if (template_name_p (DECL_NAME (decl
)))
756 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
758 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl
)));
759 PUT_SDB_SCL (C_TPDEF
);
763 /* Parm decls go in their own separate chains
764 and are output by sdbout_reg_parms and sdbout_parms. */
768 /* Don't mention a variable that is external.
769 Let the file that defines it describe it. */
770 if (DECL_EXTERNAL (decl
))
773 /* Ignore __FUNCTION__, etc. */
774 if (DECL_IGNORED_P (decl
))
777 /* If there was an error in the declaration, don't dump core
778 if there is no RTL associated with the variable doesn't
780 if (!DECL_RTL_SET_P (decl
))
784 eliminate_regs (DECL_RTL (decl
), 0, NULL_RTX
));
785 #ifdef LEAF_REG_REMAP
786 if (current_function_uses_only_leaf_regs
)
787 leaf_renumber_regs_insn (DECL_RTL (decl
));
789 value
= DECL_RTL (decl
);
791 /* Don't mention a variable at all
792 if it was completely optimized into nothingness.
794 If DECL was from an inline function, then its rtl
795 is not identically the rtl that was used in this
796 particular compilation. */
797 if (GET_CODE (value
) == REG
)
799 regno
= REGNO (DECL_RTL (decl
));
800 if (regno
>= FIRST_PSEUDO_REGISTER
)
803 else if (GET_CODE (value
) == SUBREG
)
805 while (GET_CODE (value
) == SUBREG
)
806 value
= SUBREG_REG (value
);
807 if (GET_CODE (value
) == REG
)
809 if (REGNO (value
) >= FIRST_PSEUDO_REGISTER
)
812 regno
= REGNO (alter_subreg (DECL_RTL (decl
)));
813 value
= DECL_RTL (decl
);
815 /* Don't output anything if an auto variable
816 gets RTL that is static.
817 GAS version 2.2 can't handle such output. */
818 else if (GET_CODE (value
) == MEM
&& CONSTANT_P (XEXP (value
, 0))
819 && ! TREE_STATIC (decl
))
822 /* Emit any structure, union, or enum type that has not been output.
823 This occurs for tag-less structs (et al) used to declare variables
825 if (TREE_CODE (type
) == ENUMERAL_TYPE
826 || TREE_CODE (type
) == RECORD_TYPE
827 || TREE_CODE (type
) == UNION_TYPE
828 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
830 if (COMPLETE_TYPE_P (type
) /* not a forward reference */
831 && KNOWN_TYPE_TAG (type
) == 0) /* not yet declared */
832 sdbout_one_type (type
);
835 /* Defer SDB information for top-level initialized variables! */
837 && GET_CODE (value
) == MEM
838 && DECL_INITIAL (decl
))
841 /* C++ in 2.3 makes nameless symbols. That will be fixed later.
842 For now, avoid crashing. */
843 if (DECL_NAME (decl
) == NULL_TREE
)
846 /* Record the name for, starting a symtab entry. */
848 name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
850 name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
));
852 if (GET_CODE (value
) == MEM
853 && GET_CODE (XEXP (value
, 0)) == SYMBOL_REF
)
856 if (TREE_PUBLIC (decl
))
858 PUT_SDB_VAL (XEXP (value
, 0));
863 PUT_SDB_VAL (XEXP (value
, 0));
864 PUT_SDB_SCL (C_STAT
);
870 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno
));
873 else if (GET_CODE (value
) == MEM
874 && (GET_CODE (XEXP (value
, 0)) == MEM
875 || (GET_CODE (XEXP (value
, 0)) == REG
876 && REGNO (XEXP (value
, 0)) != HARD_FRAME_POINTER_REGNUM
877 && REGNO (XEXP (value
, 0)) != STACK_POINTER_REGNUM
)))
878 /* If the value is indirect by memory or by a register
879 that isn't the frame pointer
880 then it means the object is variable-sized and address through
881 that register or stack slot. COFF has no way to represent this
882 so all we can do is output the variable as a pointer. */
885 if (GET_CODE (XEXP (value
, 0)) == REG
)
887 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value
, 0))));
892 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
894 We want the value of that CONST_INT. */
895 /* Encore compiler hates a newline in a macro arg, it seems. */
896 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
897 (XEXP (XEXP (value
, 0), 0)));
898 PUT_SDB_SCL (C_AUTO
);
901 /* Effectively do build_pointer_type, but don't cache this type,
902 since it might be temporary whereas the type it points to
903 might have been saved for inlining. */
904 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
905 type
= make_node (POINTER_TYPE
);
906 TREE_TYPE (type
) = TREE_TYPE (decl
);
908 else if (GET_CODE (value
) == MEM
909 && ((GET_CODE (XEXP (value
, 0)) == PLUS
910 && GET_CODE (XEXP (XEXP (value
, 0), 0)) == REG
911 && GET_CODE (XEXP (XEXP (value
, 0), 1)) == CONST_INT
)
912 /* This is for variables which are at offset zero from
913 the frame pointer. This happens on the Alpha.
914 Non-frame pointer registers are excluded above. */
915 || (GET_CODE (XEXP (value
, 0)) == REG
)))
917 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
918 or (MEM (REG...)). We want the value of that CONST_INT
921 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value
, 0)));
922 PUT_SDB_SCL (C_AUTO
);
924 else if (GET_CODE (value
) == MEM
&& GET_CODE (XEXP (value
, 0)) == CONST
)
926 /* Handle an obscure case which can arise when optimizing and
927 when there are few available registers. (This is *always*
928 the case for i386/i486 targets). The DECL_RTL looks like
929 (MEM (CONST ...)) even though this variable is a local `auto'
930 or a local `register' variable. In effect, what has happened
931 is that the reload pass has seen that all assignments and
932 references for one such a local variable can be replaced by
933 equivalent assignments and references to some static storage
934 variable, thereby avoiding the need for a register. In such
935 cases we're forced to lie to debuggers and tell them that
936 this variable was itself `static'. */
938 PUT_SDB_VAL (XEXP (XEXP (value
, 0), 0));
939 PUT_SDB_SCL (C_STAT
);
943 /* It is something we don't know how to represent for SDB. */
951 PUT_SDB_TYPE (plain_type (type
));
955 /* Output SDB information for a top-level initialized variable
956 that has been delayed. */
959 sdbout_toplevel_data (decl
)
962 tree type
= TREE_TYPE (decl
);
964 if (DECL_IGNORED_P (decl
))
967 if (! (TREE_CODE (decl
) == VAR_DECL
968 && GET_CODE (DECL_RTL (decl
)) == MEM
969 && DECL_INITIAL (decl
)))
972 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
)));
973 PUT_SDB_VAL (XEXP (DECL_RTL (decl
), 0));
974 if (TREE_PUBLIC (decl
))
980 PUT_SDB_SCL (C_STAT
);
982 PUT_SDB_TYPE (plain_type (type
));
986 #ifdef SDB_ALLOW_FORWARD_REFERENCES
988 /* Machinery to record and output anonymous types. */
990 static tree anonymous_types
;
993 sdbout_queue_anonymous_type (type
)
996 anonymous_types
= tree_cons (NULL_TREE
, type
, anonymous_types
);
1000 sdbout_dequeue_anonymous_types ()
1002 register tree types
, link
;
1004 while (anonymous_types
)
1006 types
= nreverse (anonymous_types
);
1007 anonymous_types
= NULL_TREE
;
1009 for (link
= types
; link
; link
= TREE_CHAIN (link
))
1011 register tree type
= TREE_VALUE (link
);
1013 if (type
&& ! TREE_ASM_WRITTEN (type
))
1014 sdbout_one_type (type
);
1021 /* Given a chain of ..._TYPE nodes, all of which have names,
1022 output definitions of those names, as typedefs. */
1025 sdbout_types (types
)
1026 register tree types
;
1030 for (link
= types
; link
; link
= TREE_CHAIN (link
))
1031 sdbout_one_type (link
);
1033 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1034 sdbout_dequeue_anonymous_types ();
1042 if (type
== error_mark_node
)
1043 type
= integer_type_node
;
1044 PUT_SDB_TYPE (plain_type (type
));
1047 /* Output types of the fields of type TYPE, if they are structs.
1049 Formerly did not chase through pointer types, since that could be circular.
1050 They must come before TYPE, since forward refs are not allowed.
1051 Now james@bigtex.cactus.org says to try them. */
1054 sdbout_field_types (type
)
1059 for (tail
= TYPE_FIELDS (type
); tail
; tail
= TREE_CHAIN (tail
))
1060 /* This condition should match the one for emitting the actual
1062 if (TREE_CODE (tail
) == FIELD_DECL
1065 && host_integerp (DECL_SIZE (tail
), 1)
1066 && host_integerp (bit_position (tail
), 0))
1068 if (POINTER_TYPE_P (TREE_TYPE (tail
)))
1069 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail
)));
1071 sdbout_one_type (TREE_TYPE (tail
));
1075 /* Use this to put out the top level defined record and union types
1076 for later reference. If this is a struct with a name, then put that
1077 name out. Other unnamed structs will have .xxfake labels generated so
1078 that they may be referred to later.
1079 The label will be stored in the KNOWN_TYPE_TAG slot of a type.
1080 It may NOT be called recursively. */
1083 sdbout_one_type (type
)
1086 if (current_function_decl
!= NULL_TREE
1087 && DECL_SECTION_NAME (current_function_decl
) != NULL_TREE
)
1088 ; /* Don't change section amid function. */
1092 switch (TREE_CODE (type
))
1096 case QUAL_UNION_TYPE
:
1098 type
= TYPE_MAIN_VARIANT (type
);
1099 /* Don't output a type twice. */
1100 if (TREE_ASM_WRITTEN (type
))
1101 /* James said test TREE_ASM_BEING_WRITTEN here. */
1104 /* Output nothing if type is not yet defined. */
1105 if (!COMPLETE_TYPE_P (type
))
1108 TREE_ASM_WRITTEN (type
) = 1;
1110 /* This is reputed to cause trouble with the following case,
1111 but perhaps checking TYPE_SIZE above will fix it. */
1113 /* Here is a test case:
1119 typedef struct intermediate {
1123 typedef struct badstr {
1128 TREE_ASM_BEING_WRITTEN (type
) = 1;
1130 /* This change, which ought to make better output,
1131 used to make the COFF assembler unhappy.
1132 Changes involving KNOWN_TYPE_TAG may fix the problem. */
1133 /* Before really doing anything, output types we want to refer to. */
1134 /* Note that in version 1 the following two lines
1135 are not used if forward references are in use. */
1136 if (TREE_CODE (type
) != ENUMERAL_TYPE
)
1137 sdbout_field_types (type
);
1139 TREE_ASM_WRITTEN (type
) = 1;
1143 /* Output a structure type. */
1145 int size
= int_size_in_bytes (type
);
1148 int i
, n_baseclasses
= 0;
1150 /* Record the type tag, but not in its permanent place just yet. */
1151 sdbout_record_type_name (type
);
1153 PUT_SDB_DEF (KNOWN_TYPE_TAG (type
));
1155 switch (TREE_CODE (type
))
1158 case QUAL_UNION_TYPE
:
1159 PUT_SDB_SCL (C_UNTAG
);
1160 PUT_SDB_TYPE (T_UNION
);
1165 PUT_SDB_SCL (C_STRTAG
);
1166 PUT_SDB_TYPE (T_STRUCT
);
1171 PUT_SDB_SCL (C_ENTAG
);
1172 PUT_SDB_TYPE (T_ENUM
);
1180 PUT_SDB_SIZE (size
);
1183 /* Print out the base class information with fields
1184 named after the types they hold. */
1185 /* This is only relevent to aggregate types. TYPE_BINFO is used
1186 for other purposes in an ENUMERAL_TYPE, so we must exclude that
1188 if (TREE_CODE (type
) != ENUMERAL_TYPE
)
1190 if (TYPE_BINFO (type
)
1191 && TYPE_BINFO_BASETYPES (type
))
1192 n_baseclasses
= TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type
));
1193 for (i
= 0; i
< n_baseclasses
; i
++)
1195 tree child
= TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type
)),
1197 tree child_type
= BINFO_TYPE (child
);
1198 tree child_type_name
;
1199 if (TYPE_NAME (child_type
) == 0)
1201 if (TREE_CODE (TYPE_NAME (child_type
)) == IDENTIFIER_NODE
)
1202 child_type_name
= TYPE_NAME (child_type
);
1203 else if (TREE_CODE (TYPE_NAME (child_type
)) == TYPE_DECL
)
1205 child_type_name
= DECL_NAME (TYPE_NAME (child_type
));
1206 if (child_type_name
&& template_name_p (child_type_name
))
1208 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type
));
1214 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name
));
1215 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child
), 0));
1216 PUT_SDB_SCL (member_scl
);
1217 sdbout_type (BINFO_TYPE (child
));
1222 /* output the individual fields */
1224 if (TREE_CODE (type
) == ENUMERAL_TYPE
)
1226 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
1227 if (host_integerp (TREE_VALUE (tem
), 0))
1229 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem
)));
1230 PUT_SDB_INT_VAL (tree_low_cst (TREE_VALUE (tem
), 0));
1231 PUT_SDB_SCL (C_MOE
);
1232 PUT_SDB_TYPE (T_MOE
);
1236 else /* record or union type */
1237 for (tem
= TYPE_FIELDS (type
); tem
; tem
= TREE_CHAIN (tem
))
1238 /* Output the name, type, position (in bits), size (in bits)
1241 /* Omit here the nameless fields that are used to skip bits.
1242 Also omit fields with variable size or position.
1243 Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1244 if (TREE_CODE (tem
) == FIELD_DECL
1247 && host_integerp (DECL_SIZE (tem
), 1)
1248 && host_integerp (bit_position (tem
), 0))
1253 name
= IDENTIFIER_POINTER (DECL_NAME (tem
));
1255 if (DECL_BIT_FIELD_TYPE (tem
))
1257 PUT_SDB_INT_VAL (int_bit_position (tem
));
1258 PUT_SDB_SCL (C_FIELD
);
1259 sdbout_type (DECL_BIT_FIELD_TYPE (tem
));
1260 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem
), 1));
1264 PUT_SDB_INT_VAL (int_bit_position (tem
) / BITS_PER_UNIT
);
1265 PUT_SDB_SCL (member_scl
);
1266 sdbout_type (TREE_TYPE (tem
));
1270 /* output end of a structure,union, or enumeral definition */
1272 PUT_SDB_PLAIN_DEF ("eos");
1273 PUT_SDB_INT_VAL (size
);
1274 PUT_SDB_SCL (C_EOS
);
1275 PUT_SDB_TAG (KNOWN_TYPE_TAG (type
));
1276 PUT_SDB_SIZE (size
);
1286 /* The following two functions output definitions of function parameters.
1287 Each parameter gets a definition locating it in the parameter list.
1288 Each parameter that is a register variable gets a second definition
1289 locating it in the register.
1291 Printing or argument lists in gdb uses the definitions that
1292 locate in the parameter list. But reference to the variable in
1293 expressions uses preferentially the definition as a register. */
1295 /* Output definitions, referring to storage in the parmlist,
1296 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1299 sdbout_parms (parms
)
1302 for (; parms
; parms
= TREE_CHAIN (parms
))
1303 if (DECL_NAME (parms
))
1305 int current_sym_value
= 0;
1306 const char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1308 if (name
== 0 || *name
== 0)
1309 name
= gen_fake_label ();
1311 /* Perform any necessary register eliminations on the parameter's rtl,
1312 so that the debugging output will be accurate. */
1313 DECL_INCOMING_RTL (parms
)
1314 = eliminate_regs (DECL_INCOMING_RTL (parms
), 0, NULL_RTX
);
1315 SET_DECL_RTL (parms
,
1316 eliminate_regs (DECL_RTL (parms
), 0, NULL_RTX
));
1318 if (PARM_PASSED_IN_MEMORY (parms
))
1320 rtx addr
= XEXP (DECL_INCOMING_RTL (parms
), 0);
1323 /* ??? Here we assume that the parm address is indexed
1324 off the frame pointer or arg pointer.
1325 If that is not true, we produce meaningless results,
1326 but do not crash. */
1327 if (GET_CODE (addr
) == PLUS
1328 && GET_CODE (XEXP (addr
, 1)) == CONST_INT
)
1329 current_sym_value
= INTVAL (XEXP (addr
, 1));
1331 current_sym_value
= 0;
1333 if (GET_CODE (DECL_RTL (parms
)) == REG
1334 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1335 type
= DECL_ARG_TYPE (parms
);
1338 int original_sym_value
= current_sym_value
;
1340 /* This is the case where the parm is passed as an int or
1341 double and it is converted to a char, short or float
1342 and stored back in the parmlist. In this case, describe
1343 the parm with the variable's declared type, and adjust
1344 the address if the least significant bytes (which we are
1345 using) are not the first ones. */
1346 if (BYTES_BIG_ENDIAN
1347 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1348 current_sym_value
+=
1349 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1350 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1352 if (GET_CODE (DECL_RTL (parms
)) == MEM
1353 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1354 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1356 && (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1))
1357 == current_sym_value
))
1358 type
= TREE_TYPE (parms
);
1361 current_sym_value
= original_sym_value
;
1362 type
= DECL_ARG_TYPE (parms
);
1367 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
, addr
));
1368 PUT_SDB_SCL (C_ARG
);
1369 PUT_SDB_TYPE (plain_type (type
));
1372 else if (GET_CODE (DECL_RTL (parms
)) == REG
)
1375 /* Parm passed in registers and lives in registers or nowhere. */
1377 /* If parm lives in a register, use that register;
1378 pretend the parm was passed there. It would be more consistent
1379 to describe the register where the parm was passed,
1380 but in practice that register usually holds something else. */
1381 if (REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
)
1382 best_rtl
= DECL_RTL (parms
);
1383 /* If the parm lives nowhere,
1384 use the register where it was passed. */
1386 best_rtl
= DECL_INCOMING_RTL (parms
);
1389 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl
)));
1390 PUT_SDB_SCL (C_REGPARM
);
1391 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1394 else if (GET_CODE (DECL_RTL (parms
)) == MEM
1395 && XEXP (DECL_RTL (parms
), 0) != const0_rtx
)
1397 /* Parm was passed in registers but lives on the stack. */
1399 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1400 in which case we want the value of that CONST_INT,
1401 or (MEM (REG ...)) or (MEM (MEM ...)),
1402 in which case we use a value of zero. */
1403 if (GET_CODE (XEXP (DECL_RTL (parms
), 0)) == REG
1404 || GET_CODE (XEXP (DECL_RTL (parms
), 0)) == MEM
)
1405 current_sym_value
= 0;
1407 current_sym_value
= INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1));
1409 /* Again, this assumes the offset is based on the arg pointer. */
1411 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value
,
1412 XEXP (DECL_RTL (parms
), 0)));
1413 PUT_SDB_SCL (C_ARG
);
1414 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1420 /* Output definitions for the places where parms live during the function,
1421 when different from where they were passed, when the parms were passed
1424 It is not useful to do this for parms passed in registers
1425 that live during the function in different registers, because it is
1426 impossible to look in the passed register for the passed value,
1427 so we use the within-the-function register to begin with.
1429 PARMS is a chain of PARM_DECL nodes. */
1432 sdbout_reg_parms (parms
)
1435 for (; parms
; parms
= TREE_CHAIN (parms
))
1436 if (DECL_NAME (parms
))
1438 const char *name
= IDENTIFIER_POINTER (DECL_NAME (parms
));
1440 /* Report parms that live in registers during the function
1441 but were passed in memory. */
1442 if (GET_CODE (DECL_RTL (parms
)) == REG
1443 && REGNO (DECL_RTL (parms
)) < FIRST_PSEUDO_REGISTER
1444 && PARM_PASSED_IN_MEMORY (parms
))
1446 if (name
== 0 || *name
== 0)
1447 name
= gen_fake_label ();
1449 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms
))));
1450 PUT_SDB_SCL (C_REG
);
1451 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1454 /* Report parms that live in memory but not where they were passed. */
1455 else if (GET_CODE (DECL_RTL (parms
)) == MEM
1456 && GET_CODE (XEXP (DECL_RTL (parms
), 0)) == PLUS
1457 && GET_CODE (XEXP (XEXP (DECL_RTL (parms
), 0), 1)) == CONST_INT
1458 && PARM_PASSED_IN_MEMORY (parms
)
1459 && ! rtx_equal_p (DECL_RTL (parms
), DECL_INCOMING_RTL (parms
)))
1461 #if 0 /* ??? It is not clear yet what should replace this. */
1462 int offset
= DECL_OFFSET (parms
) / BITS_PER_UNIT
;
1463 /* A parm declared char is really passed as an int,
1464 so it occupies the least significant bytes.
1465 On a big-endian machine those are not the low-numbered ones. */
1466 if (BYTES_BIG_ENDIAN
1468 && TREE_TYPE (parms
) != DECL_ARG_TYPE (parms
))
1469 offset
+= (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms
)))
1470 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms
))));
1471 if (INTVAL (XEXP (XEXP (DECL_RTL (parms
), 0), 1)) != offset
) {...}
1474 if (name
== 0 || *name
== 0)
1475 name
= gen_fake_label ();
1477 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1478 (XEXP (DECL_RTL (parms
), 0)));
1479 PUT_SDB_SCL (C_AUTO
);
1480 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms
)));
1487 /* Output debug information for a global DECL. Called from toplev.c
1488 after compilation proper has finished. */
1491 sdbout_global_decl (decl
)
1494 if (TREE_CODE (decl
) == VAR_DECL
1495 && !DECL_EXTERNAL (decl
)
1496 && DECL_RTL_SET_P (decl
))
1498 /* The COFF linker can move initialized global vars to the end.
1499 And that can screw up the symbol ordering. Defer those for
1500 sdbout_finish (). */
1501 if (!DECL_INITIAL (decl
) || !TREE_PUBLIC (decl
))
1502 sdbout_symbol (decl
, 0);
1504 /* Output COFF information for non-global file-scope initialized
1506 if (DECL_INITIAL (decl
) && GET_CODE (DECL_RTL (decl
)) == MEM
)
1507 sdbout_toplevel_data (decl
);
1511 /* Output initialized global vars at the end, in the order of
1512 definition. See comment in sdbout_global_decl. */
1515 sdbout_finish (main_filename
)
1516 const char *main_filename ATTRIBUTE_UNUSED
;
1518 tree decl
= getdecls ();
1519 unsigned int len
= list_length (decl
);
1520 tree
*vec
= (tree
*) xmalloc (sizeof (tree
) * len
);
1523 /* Process the decls in reverse order--earliest first. Put them
1524 into VEC from back to front, then take out from front. */
1526 for (i
= 0; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
1527 vec
[len
- i
- 1] = decl
;
1529 for (i
= 0; i
< len
; i
++)
1532 if (TREE_CODE (decl
) == VAR_DECL
1533 && ! DECL_EXTERNAL (decl
)
1534 && DECL_INITIAL (decl
)
1535 && TREE_PUBLIC (decl
)
1536 && DECL_RTL_SET_P (decl
))
1537 sdbout_symbol (decl
, 0);
1543 /* Describe the beginning of an internal block within a function.
1544 Also output descriptions of variables defined in this block.
1546 N is the number of the block, by order of beginning, counting from 1,
1547 and not counting the outermost (function top-level) block.
1548 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1549 if the count starts at 0 for the outermost one. */
1552 sdbout_begin_block (line
, n
)
1556 tree decl
= current_function_decl
;
1557 MAKE_LINE_SAFE (line
);
1559 /* The SCO compiler does not emit a separate block for the function level
1560 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1561 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1562 #ifndef MIPS_DEBUGGING_INFO
1565 PUT_SDB_BLOCK_START (line
- sdb_begin_function_line
);
1569 /* Include the outermost BLOCK's variables in block 1. */
1570 do_block
= BLOCK_NUMBER (DECL_INITIAL (decl
));
1571 sdbout_block (DECL_INITIAL (decl
));
1573 /* If -g1, suppress all the internal symbols of functions
1574 except for arguments. */
1575 if (debug_info_level
!= DINFO_LEVEL_TERSE
)
1578 sdbout_block (DECL_INITIAL (decl
));
1581 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1582 sdbout_dequeue_anonymous_types ();
1586 /* Describe the end line-number of an internal block within a function. */
1589 sdbout_end_block (line
, n
)
1591 unsigned int n ATTRIBUTE_UNUSED
;
1593 MAKE_LINE_SAFE (line
);
1595 /* The SCO compiler does not emit a separate block for the function level
1596 scope, so we avoid it here also. However, mips ECOFF compilers do emit
1597 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */
1598 #ifndef MIPS_DEBUGGING_INFO
1601 PUT_SDB_BLOCK_END (line
- sdb_begin_function_line
);
1605 sdbout_source_line (line
, filename
)
1607 const char *filename ATTRIBUTE_UNUSED
;
1609 /* COFF relative line numbers must be positive. */
1610 if ((int) line
> sdb_begin_function_line
)
1612 #ifdef ASM_OUTPUT_SOURCE_LINE
1613 ASM_OUTPUT_SOURCE_LINE (asm_out_file
, line
);
1615 fprintf (asm_out_file
, "\t.ln\t%d\n",
1616 ((sdb_begin_function_line
> -1)
1617 ? line
- sdb_begin_function_line
: 1));
1622 /* Output sdb info for the current function name.
1623 Called from assemble_start_function. */
1626 sdbout_begin_function (decl
)
1627 tree decl ATTRIBUTE_UNUSED
;
1629 sdbout_symbol (current_function_decl
, 0);
1632 /* Called at beginning of function body (before or after prologue,
1633 depending on MIPS_DEBUGGING_INFO). Record the function's starting
1634 line number, so we can output relative line numbers for the other
1635 lines. Describe beginning of outermost block. Also describe the
1638 #ifndef MIPS_DEBUGGING_INFO
1640 sdbout_begin_prologue (line
, file
)
1642 const char *file ATTRIBUTE_UNUSED
;
1644 sdbout_end_prologue (line
);
1649 sdbout_end_prologue (line
)
1652 sdb_begin_function_line
= line
- 1;
1653 PUT_SDB_FUNCTION_START (line
);
1654 sdbout_parms (DECL_ARGUMENTS (current_function_decl
));
1655 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl
));
1658 /* Called at end of function (before epilogue).
1659 Describe end of outermost block. */
1662 sdbout_end_function (line
)
1665 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1666 sdbout_dequeue_anonymous_types ();
1669 MAKE_LINE_SAFE (line
);
1670 PUT_SDB_FUNCTION_END (line
- sdb_begin_function_line
);
1672 /* Indicate we are between functions, for line-number output. */
1673 sdb_begin_function_line
= -1;
1676 /* Output sdb info for the absolute end of a function.
1677 Called after the epilogue is output. */
1680 sdbout_end_epilogue ()
1682 const char *const name
1683 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl
));
1685 #ifdef PUT_SDB_EPILOGUE_END
1686 PUT_SDB_EPILOGUE_END (name
);
1688 fprintf (asm_out_file
, "\t.def\t");
1689 assemble_name (asm_out_file
, name
);
1690 fprintf (asm_out_file
, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n",
1691 SDB_DELIM
, SDB_DELIM
, SDB_DELIM
);
1695 /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1702 PUT_SDB_DEF (LABEL_NAME (insn
));
1704 PUT_SDB_SCL (C_LABEL
);
1705 PUT_SDB_TYPE (T_NULL
);
1709 /* Change to reading from a new source file. */
1712 sdbout_start_source_file (line
, filename
)
1713 unsigned int line ATTRIBUTE_UNUSED
;
1714 const char *filename ATTRIBUTE_UNUSED
;
1716 #ifdef MIPS_DEBUGGING_INFO
1717 struct sdb_file
*n
= (struct sdb_file
*) xmalloc (sizeof *n
);
1719 n
->next
= current_file
;
1722 PUT_SDB_SRC_FILE (filename
);
1726 /* Revert to reading a previous source file. */
1729 sdbout_end_source_file (line
)
1730 unsigned int line ATTRIBUTE_UNUSED
;
1732 #ifdef MIPS_DEBUGGING_INFO
1733 struct sdb_file
*next
;
1735 next
= current_file
->next
;
1736 free (current_file
);
1737 current_file
= next
;
1738 PUT_SDB_SRC_FILE (current_file
->name
);
1742 /* Set up for SDB output at the start of compilation. */
1745 sdbout_init (input_file_name
)
1746 const char *input_file_name ATTRIBUTE_UNUSED
;
1748 #ifdef MIPS_DEBUGGING_INFO
1749 current_file
= (struct sdb_file
*) xmalloc (sizeof *current_file
);
1750 current_file
->next
= NULL
;
1751 current_file
->name
= input_file_name
;
1754 #ifdef RMS_QUICK_HACK_1
1756 for (t
= getdecls (); t
; t
= TREE_CHAIN (t
))
1757 if (DECL_NAME (t
) && IDENTIFIER_POINTER (DECL_NAME (t
)) != 0
1758 && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t
)), "__vtbl_ptr_type"))
1759 sdbout_symbol (t
, 0);
1762 #ifdef SDB_ALLOW_FORWARD_REFERENCES
1763 ggc_add_tree_root (&anonymous_types
, 1);
1767 #endif /* SDB_DEBUGGING_INFO */