1 /* Output dbx-format symbol table information from GNU compiler.
2 Copyright (C) 1987, 1988, 1992 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Output dbx-format symbol table data.
22 This consists of many symbol table entries, each of them
23 a .stabs assembler pseudo-op with four operands:
24 a "name" which is really a description of one symbol and its type,
25 a "code", which is a symbol defined in stab.h whose name starts with N_,
26 an unused operand always 0,
27 and a "value" which is an address or an offset.
28 The name is enclosed in doublequote characters.
30 Each function, variable, typedef, and structure tag
31 has a symbol table entry to define it.
32 The beginning and end of each level of name scoping within
33 a function are also marked by special symbol table entries.
35 The "name" consists of the symbol name, a colon, a kind-of-symbol letter,
36 and a data type number. The data type number may be followed by
37 "=" and a type definition; normally this will happen the first time
38 the type number is mentioned. The type definition may refer to
39 other types by number, and those type numbers may be followed
40 by "=" and nested definitions.
42 This can make the "name" quite long.
43 When a name is more than 80 characters, we split the .stabs pseudo-op
44 into two .stabs pseudo-ops, both sharing the same "code" and "value".
45 The first one is marked as continued with a double-backslash at the
48 The kind-of-symbol letter distinguished function names from global
49 variables from file-scope variables from parameters from auto
50 variables in memory from typedef names from register variables.
53 The "code" is mostly redundant with the kind-of-symbol letter
54 that goes in the "name", but not entirely: for symbols located
55 in static storage, the "code" says which segment the address is in,
56 which controls how it is relocated.
58 The "value" for a symbol in static storage
59 is the core address of the symbol (actually, the assembler
60 label for the symbol). For a symbol located in a stack slot
61 it is the stack offset; for one in a register, the register number.
62 For a typedef symbol, it is zero.
64 If DEBUG_SYMS_TEXT is defined, all debugging symbols must be
65 output while in the text section.
67 For more on data type definitions, see `dbxout_type'. */
69 /* Include these first, because they may define MIN and MAX. */
78 #include "insn-config.h"
81 #include "output.h" /* ASM_OUTPUT_SOURCE_LINE may refer to sdb functions. */
87 #ifdef XCOFF_DEBUGGING_INFO
92 #define ASM_STABS_OP ".stabs"
96 #define ASM_STABN_OP ".stabn"
99 #ifndef DBX_TYPE_DECL_STABS_CODE
100 #define DBX_TYPE_DECL_STABS_CODE N_LSYM
103 #ifndef DBX_STATIC_CONST_VAR_CODE
104 #define DBX_STATIC_CONST_VAR_CODE N_FUN
107 #ifndef DBX_REGPARM_STABS_CODE
108 #define DBX_REGPARM_STABS_CODE N_RSYM
111 #ifndef DBX_REGPARM_STABS_LETTER
112 #define DBX_REGPARM_STABS_LETTER 'P'
115 #ifndef DBX_MEMPARM_STABS_LETTER
116 #define DBX_MEMPARM_STABS_LETTER 'p'
119 /* Nonzero means if the type has methods, only output debugging
120 information if methods are actually written to the asm file. */
122 static int flag_minimal_debug = 1;
124 /* Nonzero if we have actually used any of the GDB extensions
125 to the debugging format. The idea is that we use them for the
126 first time only if there's a strong reason, but once we have done that,
127 we use them whenever convenient. */
129 static int have_used_extensions = 0;
133 /* Typical USG systems don't have stab.h, and they also have
134 no use for DBX-format debugging info. */
136 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
138 #ifdef DEBUG_SYMS_TEXT
139 #define FORCE_TEXT text_section ();
144 #if defined (USG) || defined (NO_STAB_H)
145 #include "gstab.h" /* If doing DBX on sysV, use our own stab.h. */
147 #include <stab.h> /* On BSD, use the system's stab.h. */
149 /* This is a GNU extension we need to reference in this file. */
156 #define STAB_CODE_TYPE enum __stab_debug_code
158 #define STAB_CODE_TYPE int
161 /* 1 if PARM is passed to this function in memory. */
163 #define PARM_PASSED_IN_MEMORY(PARM) \
164 (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
166 /* A C expression for the integer offset value of an automatic variable
167 (N_LSYM) having address X (an RTX). */
168 #ifndef DEBUGGER_AUTO_OFFSET
169 #define DEBUGGER_AUTO_OFFSET(X) \
170 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
173 /* A C expression for the integer offset value of an argument (N_PSYM)
174 having address X (an RTX). The nominal offset is OFFSET. */
175 #ifndef DEBUGGER_ARG_OFFSET
176 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
179 /* Stream for writing to assembler file. */
181 static FILE *asmfile;
183 /* Last source file name mentioned in a NOTE insn. */
185 static char *lastfile;
187 /* Current working directory. */
191 enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED};
193 /* Vector recording the status of describing C data types.
194 When we first notice a data type (a tree node),
195 we assign it a number using next_type_number.
196 That is its index in this vector.
197 The vector element says whether we have yet output
198 the definition of the type. TYPE_XREF says we have
199 output it as a cross-reference only. */
201 enum typestatus *typevec;
203 /* Number of elements of space allocated in `typevec'. */
205 static int typevec_len;
207 /* In dbx output, each type gets a unique number.
208 This is the number for the next type output.
209 The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */
211 static int next_type_number;
213 /* In dbx output, we must assign symbol-blocks id numbers
214 in the order in which their beginnings are encountered.
215 We output debugging info that refers to the beginning and
216 end of the ranges of code in each block
217 with assembler labels LBBn and LBEn, where n is the block number.
218 The labels are generated in final, which assigns numbers to the
219 blocks in the same way. */
221 static int next_block_number;
223 /* These variables are for dbxout_symbol to communicate to
224 dbxout_finish_symbol.
225 current_sym_code is the symbol-type-code, a symbol N_... define in stab.h.
226 current_sym_value and current_sym_addr are two ways to address the
227 value to store in the symtab entry.
228 current_sym_addr if nonzero represents the value as an rtx.
229 If that is zero, current_sym_value is used. This is used
230 when the value is an offset (such as for auto variables,
231 register variables and parms). */
233 static STAB_CODE_TYPE current_sym_code;
234 static int current_sym_value;
235 static rtx current_sym_addr;
237 /* Number of chars of symbol-description generated so far for the
238 current symbol. Used by CHARS and CONTIN. */
240 static int current_sym_nchars;
242 /* Report having output N chars of the current symbol-description. */
244 #define CHARS(N) (current_sym_nchars += (N))
246 /* Break the current symbol-description, generating a continuation,
247 if it has become long. */
249 #ifndef DBX_CONTIN_LENGTH
250 #define DBX_CONTIN_LENGTH 80
253 #if DBX_CONTIN_LENGTH > 0
255 do {if (current_sym_nchars > DBX_CONTIN_LENGTH) dbxout_continue ();} while (0)
260 void dbxout_types ();
262 void dbxout_symbol ();
263 static void dbxout_type_name ();
264 static void dbxout_type ();
265 static void dbxout_typedefs ();
266 static void dbxout_prepare_symbol ();
267 static void dbxout_finish_symbol ();
268 static void dbxout_continue ();
269 static void print_int_cst_octal ();
270 static void print_octal ();
272 #if 0 /* Not clear we will actually need this. */
274 /* Return the absolutized filename for the given relative
275 filename. Note that if that filename is already absolute, it may
276 still be returned in a modified form because this routine also
277 eliminates redundant slashes and single dots and eliminates double
278 dots to get a shortest possible filename from the given input
279 filename. The absolutization of relative filenames is made by
280 assuming that the given filename is to be taken as relative to
281 the first argument (cwd) or to the current directory if cwd is
285 abspath (rel_filename)
288 /* Setup the current working directory as needed. */
290 = (char *) alloca (strlen (cwd) + strlen (rel_filename) + 1);
291 char *endp = abs_buffer;
295 /* Copy the filename (possibly preceded by the current working
296 directory name) into the absolutization buffer. */
301 if (rel_filename[0] != '/')
304 while (*endp++ = *src_p++)
306 *(endp-1) = '/'; /* overwrite null */
308 src_p = rel_filename;
309 while (*endp++ = *src_p++)
314 /* Now make a copy of abs_buffer into abs_buffer, shortening the
315 filename (by taking out slashes and dots) as we go. */
317 outp = inp = abs_buffer;
318 *outp++ = *inp++; /* copy first slash */
323 else if (inp[0] == '/' && outp[-1] == '/')
328 else if (inp[0] == '.' && outp[-1] == '/')
332 else if (inp[1] == '/')
337 else if ((inp[1] == '.') && (inp[2] == 0 || inp[2] == '/'))
339 inp += (inp[2] == '/') ? 3 : 2;
341 while (outp >= abs_buffer && *outp != '/')
343 if (outp < abs_buffer)
345 /* Catch cases like /.. where we try to backup to a
346 point above the absolute root of the logical file
349 fprintf (stderr, "%s: invalid file name: %s\n",
350 pname, rel_filename);
360 /* On exit, make sure that there is a trailing null, and make sure that
361 the last character of the returned string is *not* a slash. */
367 /* Make a copy (in the heap) of the stuff left in the absolutization
368 buffer and return a pointer to the copy. */
370 value = (char *) oballoc (strlen (abs_buffer) + 1);
371 strcpy (value, abs_buffer);
376 /* At the beginning of compilation, start writing the symbol table.
377 Initialize `typevec' and output the standard data types of C. */
380 dbxout_init (asm_file, input_file_name, syms)
382 char *input_file_name;
385 char ltext_label_name[100];
390 typevec = (enum typestatus *) xmalloc (typevec_len * sizeof typevec[0]);
391 bzero (typevec, typevec_len * sizeof typevec[0]);
393 /* Convert Ltext into the appropriate format for local labels in case
394 the system doesn't insert underscores in front of user generated
396 ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0);
398 /* Put the current working directory in an N_SO symbol. */
399 #ifndef DBX_WORKING_DIRECTORY /* Only some versions of DBX want this,
400 but GDB always does. */
401 if (use_gnu_debug_info_extensions)
404 if (cwd || (cwd = getpwd ()))
406 #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
407 DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asmfile, cwd);
408 #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
409 fprintf (asmfile, "%s \"%s/\",%d,0,0,%s\n", ASM_STABS_OP,
410 cwd, N_SO, <ext_label_name[1]);
411 #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
415 #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME
416 /* This should NOT be DBX_OUTPUT_SOURCE_FILENAME. That
417 would give us an N_SOL, and we want an N_SO. */
418 DBX_OUTPUT_MAIN_SOURCE_FILENAME (asmfile, input_file_name);
419 #else /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */
420 /* We include outputting `Ltext:' here,
421 because that gives you a way to override it. */
422 /* Used to put `Ltext:' before the reference, but that loses on sun 4. */
423 fprintf (asmfile, "%s \"%s\",%d,0,0,%s\n", ASM_STABS_OP, input_file_name,
424 N_SO, <ext_label_name[1]);
426 ASM_OUTPUT_INTERNAL_LABEL (asmfile, "Ltext", 0);
427 #endif /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */
429 /* Possibly output something to inform GDB that this compilation was by
430 GCC. It's easier for GDB to parse it when after the N_SO's. This
431 is used in Solaris 2. */
432 #ifdef ASM_IDENTIFY_GCC_AFTER_SOURCE
433 ASM_IDENTIFY_GCC_AFTER_SOURCE (asmfile);
436 lastfile = input_file_name;
438 next_type_number = 1;
439 next_block_number = 2;
441 /* Make sure that types `int' and `char' have numbers 1 and 2.
442 Definitions of other integer types will refer to those numbers.
443 (Actually it should no longer matter what their numbers are.
444 Also, if any types with tags have been defined, dbxout_symbol
445 will output them first, so the numbers won't be 1 and 2. That
446 happens in C++. So it's a good thing it should no longer matter). */
448 #ifdef DBX_OUTPUT_STANDARD_TYPES
449 DBX_OUTPUT_STANDARD_TYPES (syms);
451 dbxout_symbol (TYPE_NAME (integer_type_node), 0);
452 dbxout_symbol (TYPE_NAME (char_type_node), 0);
455 /* Get all permanent types that have typedef names,
456 and output them all, except for those already output. */
458 dbxout_typedefs (syms);
461 /* Output any typedef names for types described by TYPE_DECLs in SYMS,
462 in the reverse order from that which is found in SYMS. */
465 dbxout_typedefs (syms)
470 dbxout_typedefs (TREE_CHAIN (syms));
471 if (TREE_CODE (syms) == TYPE_DECL)
473 tree type = TREE_TYPE (syms);
475 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
476 && ! TREE_ASM_WRITTEN (TYPE_NAME (type)))
477 dbxout_symbol (TYPE_NAME (type), 0);
482 /* Output debugging info to FILE to switch to sourcefile FILENAME. */
485 dbxout_source_file (file, filename)
489 char ltext_label_name[100];
491 if (filename && (lastfile == 0 || strcmp (filename, lastfile)))
493 #ifdef DBX_OUTPUT_SOURCE_FILENAME
494 DBX_OUTPUT_SOURCE_FILENAME (file, filename);
496 ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0);
497 fprintf (file, "%s \"%s\",%d,0,0,%s\n", ASM_STABS_OP,
498 filename, N_SOL, <ext_label_name[1]);
504 /* Output a line number symbol entry into output stream FILE,
505 for source file FILENAME and line number LINENO. */
508 dbxout_source_line (file, filename, lineno)
513 dbxout_source_file (file, filename);
515 #ifdef ASM_OUTPUT_SOURCE_LINE
516 ASM_OUTPUT_SOURCE_LINE (file, lineno);
518 fprintf (file, "\t%s %d,0,%d\n", ASM_STABD_OP, N_SLINE, lineno);
522 /* At the end of compilation, finish writing the symbol table.
523 Unless you define DBX_OUTPUT_MAIN_SOURCE_FILE_END, the default is
527 dbxout_finish (file, filename)
531 #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END
532 DBX_OUTPUT_MAIN_SOURCE_FILE_END (file, filename);
533 #endif /* DBX_OUTPUT_MAIN_SOURCE_FILE_END */
536 /* Continue a symbol-description that gets too big.
537 End one symbol table entry with a double-backslash
538 and start a new one, eventually producing something like
539 .stabs "start......\\",code,0,value
540 .stabs "...rest",code,0,value */
545 #ifdef DBX_CONTIN_CHAR
546 fprintf (asmfile, "%c", DBX_CONTIN_CHAR);
548 fprintf (asmfile, "\\\\");
550 dbxout_finish_symbol (NULL_TREE);
551 fprintf (asmfile, "%s \"", ASM_STABS_OP);
552 current_sym_nchars = 0;
555 /* Subroutine of `dbxout_type'. Output the type fields of TYPE.
556 This must be a separate function because anonymous unions require
560 dbxout_type_fields (type)
564 /* Output the name, type, position (in bits), size (in bits) of each
566 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
568 /* For nameless subunions and subrecords, treat their fields as ours. */
569 if (DECL_NAME (tem) == NULL_TREE
570 && (TREE_CODE (TREE_TYPE (tem)) == UNION_TYPE
571 || TREE_CODE (TREE_TYPE (tem)) == RECORD_TYPE))
572 dbxout_type_fields (TREE_TYPE (tem));
573 /* Omit here local type decls until we know how to support them. */
574 else if (TREE_CODE (tem) == TYPE_DECL)
576 /* Omit here the nameless fields that are used to skip bits. */
577 else if (DECL_NAME (tem) != 0 && TREE_CODE (tem) != CONST_DECL)
579 /* Continue the line if necessary,
580 but not before the first field. */
581 if (tem != TYPE_FIELDS (type))
584 if (use_gnu_debug_info_extensions
585 && flag_minimal_debug
586 && TREE_CODE (tem) == FIELD_DECL
587 && DECL_VIRTUAL_P (tem)
588 && DECL_ASSEMBLER_NAME (tem))
590 have_used_extensions = 1;
591 CHARS (3 + IDENTIFIER_LENGTH (DECL_NAME (TYPE_NAME (DECL_FCONTEXT (tem)))));
592 fputs (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)), asmfile);
593 dbxout_type (DECL_FCONTEXT (tem), 0, 0);
594 fprintf (asmfile, ":");
595 dbxout_type (TREE_TYPE (tem), 0, 0);
596 fprintf (asmfile, ",%d;",
597 TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)));
601 fprintf (asmfile, "%s:", IDENTIFIER_POINTER (DECL_NAME (tem)));
602 CHARS (2 + IDENTIFIER_LENGTH (DECL_NAME (tem)));
604 if (use_gnu_debug_info_extensions
605 && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem)
606 || TREE_CODE (tem) != FIELD_DECL))
608 have_used_extensions = 1;
610 putc ((TREE_PRIVATE (tem) ? '0'
611 : TREE_PROTECTED (tem) ? '1' : '2'),
616 dbxout_type ((TREE_CODE (tem) == FIELD_DECL
617 && DECL_BIT_FIELD_TYPE (tem))
618 ? DECL_BIT_FIELD_TYPE (tem)
619 : TREE_TYPE (tem), 0, 0);
621 if (TREE_CODE (tem) == VAR_DECL)
623 if (TREE_STATIC (tem) && use_gnu_debug_info_extensions)
625 char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem));
626 have_used_extensions = 1;
627 fprintf (asmfile, ":%s;", name);
628 CHARS (strlen (name));
632 /* If TEM is non-static, GDB won't understand it. */
633 fprintf (asmfile, ",0,0;");
636 else if (TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST)
638 fprintf (asmfile, ",%d,%d;",
639 TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)),
640 TREE_INT_CST_LOW (DECL_SIZE (tem)));
643 /* This has yet to be implemented. */
650 /* Subroutine of `dbxout_type_methods'. Output debug info about the
651 method described DECL. DEBUG_NAME is an encoding of the method's
652 type signature. ??? We may be able to do without DEBUG_NAME altogether
656 dbxout_type_method_1 (decl, debug_name)
660 tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl)));
663 if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE)
665 else /* it's a METHOD_TYPE. */
667 /* A for normal functions.
668 B for `const' member functions.
669 C for `volatile' member functions.
670 D for `const volatile' member functions. */
671 if (TYPE_READONLY (TREE_TYPE (firstarg)))
673 if (TYPE_VOLATILE (TREE_TYPE (firstarg)))
676 if (DECL_VINDEX (decl))
682 fprintf (asmfile, ":%s;%c%c%c", debug_name,
683 TREE_PRIVATE (decl) ? '0' : TREE_PROTECTED (decl) ? '1' : '2', c1, c2);
684 CHARS (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl)) + 6
685 - (debug_name - IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))));
686 if (DECL_VINDEX (decl))
688 fprintf (asmfile, "%d;",
689 TREE_INT_CST_LOW (DECL_VINDEX (decl)));
690 dbxout_type (DECL_CONTEXT (decl), 0, 0);
691 fprintf (asmfile, ";");
696 /* Subroutine of `dbxout_type'. Output debug info about the methods defined
700 dbxout_type_methods (type)
703 /* C++: put out the method names and their parameter lists */
704 tree methods = TYPE_METHODS (type);
706 register tree fndecl;
708 char formatted_type_identifier_length[16];
709 register int type_identifier_length;
711 if (methods == NULL_TREE)
714 type_encoding = DECL_NAME (TYPE_NAME (type));
716 /* C++: Template classes break some assumptions made by this code about
717 the class names, constructor names, and encodings for assembler
718 label names. For now, disable output of dbx info for them. */
720 char *ptr = IDENTIFIER_POINTER (type_encoding);
721 /* This should use index. (mrs) */
722 while (*ptr && *ptr != '<') ptr++;
729 #ifdef HAVE_TEMPLATES
730 if (warn_template_debugging)
731 warning ("dbx info for template class methods not yet supported");
738 type_identifier_length = IDENTIFIER_LENGTH (type_encoding);
740 sprintf(formatted_type_identifier_length, "%d", type_identifier_length);
742 if (TREE_CODE (methods) == FUNCTION_DECL)
744 else if (TREE_VEC_ELT (methods, 0) != NULL_TREE)
745 fndecl = TREE_VEC_ELT (methods, 0);
747 fndecl = TREE_VEC_ELT (methods, 1);
751 tree name = DECL_NAME (fndecl);
754 /* Group together all the methods for the same operation.
755 These differ in the types of the arguments. */
756 for (last = NULL_TREE;
757 fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last));
758 fndecl = TREE_CHAIN (fndecl))
759 /* Output the name of the field (after overloading), as
760 well as the name of the field before overloading, along
761 with its parameter list */
763 /* This is the "mangled" name of the method.
764 It encodes the argument types. */
765 char *debug_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl));
772 if (DECL_IGNORED_P (fndecl))
775 if (flag_minimal_debug)
777 /* Detect ordinary methods because their mangled names
778 start with the operation name. */
779 if (!strncmp (IDENTIFIER_POINTER (name), debug_name,
780 IDENTIFIER_LENGTH (name)))
782 debug_name += IDENTIFIER_LENGTH (name);
783 if (debug_name[0] == '_' && debug_name[1] == '_')
785 char *method_name = debug_name + 2;
786 char *length_ptr = formatted_type_identifier_length;
787 /* Get past const and volatile qualifiers. */
788 while (*method_name == 'C' || *method_name == 'V')
790 /* Skip digits for length of type_encoding. */
791 while (*method_name == *length_ptr && *length_ptr)
792 length_ptr++, method_name++;
793 if (! strncmp (method_name,
794 IDENTIFIER_POINTER (type_encoding),
795 type_identifier_length))
796 method_name += type_identifier_length;
797 debug_name = method_name;
800 /* Detect constructors by their style of name mangling. */
801 else if (debug_name[0] == '_' && debug_name[1] == '_')
803 char *ctor_name = debug_name + 2;
804 char *length_ptr = formatted_type_identifier_length;
805 while (*ctor_name == 'C' || *ctor_name == 'V')
807 /* Skip digits for length of type_encoding. */
808 while (*ctor_name == *length_ptr && *length_ptr)
809 length_ptr++, ctor_name++;
810 if (!strncmp (IDENTIFIER_POINTER (type_encoding), ctor_name,
811 type_identifier_length))
812 debug_name = ctor_name + type_identifier_length;
814 /* The other alternative is a destructor. */
818 /* Output the operation name just once, for the first method
822 fprintf (asmfile, "%s::", IDENTIFIER_POINTER (name));
823 CHARS (IDENTIFIER_LENGTH (name) + 2);
828 dbxout_type (TREE_TYPE (fndecl), 0, destructor);
830 dbxout_type_method_1 (fndecl, debug_name);
840 /* Emit a "range" type specification, which has the form:
841 "r<index type>;<lower bound>;<upper bound>;".
842 TYPE is an INTEGER_TYPE. */
845 dbxout_range_type (type)
848 fprintf (asmfile, "r");
849 if (TREE_TYPE (type) && TREE_CODE (TREE_TYPE(type)) != INTEGER_TYPE)
850 dbxout_type (TREE_TYPE (type), 0, 0);
853 /* This used to say `r1' and we used to take care
854 to make sure that `int' was type number 1. */
855 fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (integer_type_node));
857 if (TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST)
858 fprintf (asmfile, ";%d",
859 TREE_INT_CST_LOW (TYPE_MIN_VALUE (type)));
861 fprintf (asmfile, ";0");
862 if (TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST)
863 fprintf (asmfile, ";%d;",
864 TREE_INT_CST_LOW (TYPE_MAX_VALUE (type)));
866 fprintf (asmfile, ";-1;");
869 /* Output a reference to a type. If the type has not yet been
870 described in the dbx output, output its definition now.
871 For a type already defined, just refer to its definition
872 using the type number.
874 If FULL is nonzero, and the type has been described only with
875 a forward-reference, output the definition now.
876 If FULL is zero in this case, just refer to the forward-reference
877 using the number previously allocated.
879 If SHOW_ARG_TYPES is nonzero, we output a description of the argument
880 types for a METHOD_TYPE. */
883 dbxout_type (type, full, show_arg_types)
889 static int anonymous_type_number = 0;
891 /* If there was an input error and we don't really have a type,
892 avoid crashing and write something that is at least valid
893 by assuming `int'. */
894 if (type == error_mark_node)
895 type = integer_type_node;
898 type = TYPE_MAIN_VARIANT (type);
900 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
901 && DECL_IGNORED_P (TYPE_NAME (type)))
905 if (TYPE_SYMTAB_ADDRESS (type) == 0)
907 /* Type has no dbx number assigned. Assign next available number. */
908 TYPE_SYMTAB_ADDRESS (type) = next_type_number++;
910 /* Make sure type vector is long enough to record about this type. */
912 if (next_type_number == typevec_len)
914 typevec = (enum typestatus *) xrealloc (typevec, typevec_len * 2 * sizeof typevec[0]);
915 bzero (typevec + typevec_len, typevec_len * sizeof typevec[0]);
920 /* Output the number of this type, to refer to it. */
921 fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type));
924 #ifdef DBX_TYPE_DEFINED
925 if (DBX_TYPE_DEFINED (type))
929 /* If this type's definition has been output or is now being output,
932 switch (typevec[TYPE_SYMTAB_ADDRESS (type)])
937 /* If we have already had a cross reference,
938 and either that's all we want or that's the best we could do,
939 don't repeat the cross reference.
940 Sun dbx crashes if we do. */
941 if (! full || TYPE_SIZE (type) == 0
942 /* No way in DBX fmt to describe a variable size. */
943 || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST)
951 /* For systems where dbx output does not allow the `=xsNAME:' syntax,
952 leave the type-number completely undefined rather than output
953 a cross-reference. */
954 if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE
955 || TREE_CODE (type) == ENUMERAL_TYPE)
957 if ((TYPE_NAME (type) != 0 && !full)
958 || TYPE_SIZE (type) == 0)
960 typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF;
965 /* Output a definition now. */
967 fprintf (asmfile, "=");
970 /* Mark it as defined, so that if it is self-referent
971 we will not get into an infinite recursion of definitions. */
973 typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_DEFINED;
975 switch (TREE_CODE (type))
979 /* For a void type, just define it as itself; ie, "5=5".
980 This makes us consider it defined
981 without saying what it is. The debugger will make it
982 a void type when the reference is seen, and nothing will
983 ever override that default. */
984 fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type));
989 if (type == char_type_node && ! TREE_UNSIGNED (type))
990 /* Output the type `char' as a subrange of itself!
991 I don't understand this definition, just copied it
992 from the output of pcc.
993 This used to use `r2' explicitly and we used to
994 take care to make sure that `char' was type number 2. */
995 fprintf (asmfile, "r%d;0;127;", TYPE_SYMTAB_ADDRESS (type));
996 else if (use_gnu_debug_info_extensions && TYPE_PRECISION (type) > BITS_PER_WORD)
998 /* This used to say `r1' and we used to take care
999 to make sure that `int' was type number 1. */
1000 fprintf (asmfile, "r%d;", TYPE_SYMTAB_ADDRESS (integer_type_node));
1001 print_int_cst_octal (TYPE_MIN_VALUE (type));
1002 fprintf (asmfile, ";");
1003 print_int_cst_octal (TYPE_MAX_VALUE (type));
1004 fprintf (asmfile, ";");
1006 else /* Output other integer types as subranges of `int'. */
1007 dbxout_range_type (type);
1012 /* This used to say `r1' and we used to take care
1013 to make sure that `int' was type number 1. */
1014 fprintf (asmfile, "r%d;%d;0;", TYPE_SYMTAB_ADDRESS (integer_type_node),
1015 TREE_INT_CST_LOW (size_in_bytes (type)));
1020 /* Output the type `char' as a subrange of itself.
1021 That is what pcc seems to do. */
1022 fprintf (asmfile, "r%d;0;%d;", TYPE_SYMTAB_ADDRESS (char_type_node),
1023 TREE_UNSIGNED (type) ? 255 : 127);
1027 case BOOLEAN_TYPE: /* Define as enumeral type (False, True) */
1028 fprintf (asmfile, "eFalse:0,True:1,;");
1033 putc ('d', asmfile);
1035 dbxout_type (TREE_TYPE (type), 0, 0);
1039 /* Differs from the REAL_TYPE by its new data type number */
1041 if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE)
1043 fprintf (asmfile, "r%d;%d;0;",
1044 TYPE_SYMTAB_ADDRESS (type),
1045 TREE_INT_CST_LOW (size_in_bytes (TREE_TYPE (type))));
1046 CHARS (15); /* The number is probably incorrect here. */
1048 abort (); /* What to do with CSImode complex? */
1052 putc ('S', asmfile);
1054 dbxout_type (TREE_TYPE (type), 0, 0);
1058 /* Output "a" followed by a range type definition
1059 for the index type of the array
1060 followed by a reference to the target-type.
1061 ar1;0;N;M for a C array of type M and size N+1. */
1062 tem = TYPE_DOMAIN (type);
1064 fprintf(asmfile, "ar%d;0;-1",
1065 TYPE_SYMTAB_ADDRESS (integer_type_node));
1068 fprintf(asmfile, "a");
1069 dbxout_range_type (tem);
1072 dbxout_type (TREE_TYPE (type), 0, 0);
1078 int i, n_baseclasses = 0;
1080 if (TYPE_BINFO (type) != 0 && TYPE_BINFO_BASETYPES (type) != 0)
1081 n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
1083 /* Output a structure type. */
1084 if ((TYPE_NAME (type) != 0
1085 #if 0 /* Tiemann says this creates output tha "confuses GDB".
1086 Too bad the info is so vague. Hope this doesn't lose. */
1087 && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
1088 && DECL_IGNORED_P (TYPE_NAME (type)))
1091 || TYPE_SIZE (type) == 0
1092 /* No way in DBX fmt to describe a variable size. */
1093 || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST)
1095 /* If the type is just a cross reference, output one
1096 and mark the type as partially described.
1097 If it later becomes defined, we will output
1098 its real definition.
1099 If the type has a name, don't nest its definition within
1100 another type's definition; instead, output an xref
1101 and let the definition come when the name is defined. */
1102 fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu");
1104 #if 0 /* This assertion is legitimately false in C++. */
1105 /* We shouldn't be outputting a reference to a type before its
1106 definition unless the type has a tag name.
1107 A typedef name without a tag name should be impossible. */
1108 if (TREE_CODE (TYPE_NAME (type)) != IDENTIFIER_NODE)
1111 if (TYPE_NAME (type) != 0)
1112 dbxout_type_name (type);
1114 fprintf (asmfile, "$$%d", anonymous_type_number++);
1115 fprintf (asmfile, ":");
1116 typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF;
1119 tem = size_in_bytes (type);
1121 /* Identify record or union, and print its size. */
1122 fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "s%d" : "u%d",
1123 TREE_INT_CST_LOW (tem));
1125 if (use_gnu_debug_info_extensions)
1129 have_used_extensions = 1;
1130 fprintf (asmfile, "!%d,", n_baseclasses);
1134 for (i = 0; i < n_baseclasses; i++)
1136 tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i);
1137 if (use_gnu_debug_info_extensions)
1139 have_used_extensions = 1;
1140 putc (TREE_VIA_VIRTUAL (child) ? '1'
1143 putc (TREE_VIA_PUBLIC (child) ? '2'
1146 fprintf (asmfile, "%d,",
1147 TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT);
1149 dbxout_type (BINFO_TYPE (child), 0, 0);
1150 putc (';', asmfile);
1154 /* Print out the base class information with fields
1155 which have the same names at the types they hold. */
1156 dbxout_type_name (BINFO_TYPE (child));
1157 putc (':', asmfile);
1158 dbxout_type (BINFO_TYPE (child), full, 0);
1159 fprintf (asmfile, ",%d,%d;",
1160 TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT,
1161 TREE_INT_CST_LOW (DECL_SIZE (TYPE_NAME (BINFO_TYPE (child)))) * BITS_PER_UNIT);
1169 /* Write out the field declarations. */
1170 dbxout_type_fields (type);
1171 if (use_gnu_debug_info_extensions && TYPE_METHODS (type) != NULL_TREE)
1173 have_used_extensions = 1;
1174 dbxout_type_methods (type);
1176 putc (';', asmfile);
1178 if (use_gnu_debug_info_extensions && TREE_CODE (type) == RECORD_TYPE
1179 /* Avoid the ~ if we don't really need it--it confuses dbx. */
1180 && TYPE_VFIELD (type))
1182 have_used_extensions = 1;
1184 /* Tell GDB+ that it may keep reading. */
1185 putc ('~', asmfile);
1187 /* We need to write out info about what field this class
1188 uses as its "main" vtable pointer field, because if this
1189 field is inherited from a base class, GDB cannot necessarily
1190 figure out which field it's using in time. */
1191 if (TYPE_VFIELD (type))
1193 putc ('%', asmfile);
1194 dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0, 0);
1196 putc (';', asmfile);
1202 if ((TYPE_NAME (type) != 0 && !full
1203 && (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
1204 && ! DECL_IGNORED_P (TYPE_NAME (type))))
1205 || TYPE_SIZE (type) == 0)
1207 fprintf (asmfile, "xe");
1209 dbxout_type_name (type);
1210 typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF;
1211 fprintf (asmfile, ":");
1214 #ifdef DBX_OUTPUT_ENUM
1215 DBX_OUTPUT_ENUM (asmfile, type);
1217 putc ('e', asmfile);
1219 for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem))
1221 fprintf (asmfile, "%s:%d,", IDENTIFIER_POINTER (TREE_PURPOSE (tem)),
1222 TREE_INT_CST_LOW (TREE_VALUE (tem)));
1223 CHARS (11 + IDENTIFIER_LENGTH (TREE_PURPOSE (tem)));
1224 if (TREE_CHAIN (tem) != 0)
1227 putc (';', asmfile);
1233 putc ('*', asmfile);
1235 dbxout_type (TREE_TYPE (type), 0, 0);
1239 if (use_gnu_debug_info_extensions)
1241 have_used_extensions = 1;
1242 putc ('#', asmfile);
1244 if (flag_minimal_debug && !show_arg_types)
1246 /* Normally, just output the return type.
1247 The argument types are encoded in the method name. */
1248 putc ('#', asmfile);
1249 dbxout_type (TREE_TYPE (type), 0, 0);
1250 putc (';', asmfile);
1255 /* When outputting destructors, we need to write
1256 the argument types out longhand. */
1257 dbxout_type (TYPE_METHOD_BASETYPE (type), 0, 0);
1258 putc (',', asmfile);
1260 dbxout_type (TREE_TYPE (type), 0, 0);
1261 dbxout_args (TYPE_ARG_TYPES (type));
1262 putc (';', asmfile);
1268 /* Treat it as a function type. */
1269 dbxout_type (TREE_TYPE (type), 0, 0);
1274 if (use_gnu_debug_info_extensions)
1276 have_used_extensions = 1;
1277 putc ('@', asmfile);
1279 dbxout_type (TYPE_OFFSET_BASETYPE (type), 0, 0);
1280 putc (',', asmfile);
1282 dbxout_type (TREE_TYPE (type), 0, 0);
1286 /* Should print as an int, because it is really
1288 dbxout_type (integer_type_node, 0, 0);
1292 case REFERENCE_TYPE:
1293 if (use_gnu_debug_info_extensions)
1294 have_used_extensions = 1;
1295 putc (use_gnu_debug_info_extensions ? '&' : '*', asmfile);
1297 dbxout_type (TREE_TYPE (type), 0, 0);
1301 putc ('f', asmfile);
1303 dbxout_type (TREE_TYPE (type), 0, 0);
1311 /* Print the value of integer constant C, in octal,
1312 handling double precision. */
1315 print_int_cst_octal (c)
1318 unsigned HOST_WIDE_INT high = TREE_INT_CST_HIGH (c);
1319 unsigned HOST_WIDE_INT low = TREE_INT_CST_LOW (c);
1320 int excess = (3 - (HOST_BITS_PER_WIDE_INT % 3));
1322 fprintf (asmfile, "0");
1326 print_octal (high, HOST_BITS_PER_WIDE_INT / 3);
1327 print_octal (low, HOST_BITS_PER_WIDE_INT / 3);
1331 unsigned HOST_WIDE_INT beg = high >> excess;
1332 unsigned HOST_WIDE_INT middle
1333 = ((high & (((HOST_WIDE_INT) 1 << excess) - 1)) << (3 - excess)
1334 | (low >> (HOST_BITS_PER_WIDE_INT / 3 * 3)));
1335 unsigned HOST_WIDE_INT end
1336 = low & (((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 3 * 3)) - 1);
1337 fprintf (asmfile, "%o%01o", beg, middle);
1338 print_octal (end, HOST_BITS_PER_WIDE_INT / 3);
1343 print_octal (value, digits)
1344 unsigned HOST_WIDE_INT value;
1349 for (i = digits - 1; i >= 0; i--)
1350 fprintf (asmfile, "%01o", ((value >> (3 * i)) & 7));
1353 /* Output the name of type TYPE, with no punctuation.
1354 Such names can be set up either by typedef declarations
1355 or by struct, enum and union tags. */
1358 dbxout_type_name (type)
1362 if (TYPE_NAME (type) == 0)
1364 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
1366 t = TYPE_NAME (type);
1368 else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
1370 t = DECL_NAME (TYPE_NAME (type));
1375 fprintf (asmfile, "%s", IDENTIFIER_POINTER (t));
1376 CHARS (IDENTIFIER_LENGTH (t));
1379 /* Output a .stabs for the symbol defined by DECL,
1380 which must be a ..._DECL node in the normal namespace.
1381 It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL.
1382 LOCAL is nonzero if the scope is less than the entire file. */
1385 dbxout_symbol (decl, local)
1390 tree type = TREE_TYPE (decl);
1391 tree context = NULL_TREE;
1394 /* Cast avoids warning in old compilers. */
1395 current_sym_code = (STAB_CODE_TYPE) 0;
1396 current_sym_value = 0;
1397 current_sym_addr = 0;
1399 /* Ignore nameless syms, but don't ignore type tags. */
1401 if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL)
1402 || DECL_IGNORED_P (decl))
1405 dbxout_prepare_symbol (decl);
1407 /* The output will always start with the symbol name,
1408 so always count that in the length-output-so-far. */
1410 if (DECL_NAME (decl) != 0)
1411 current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (decl));
1413 switch (TREE_CODE (decl))
1416 /* Enum values are defined by defining the enum type. */
1420 if (DECL_RTL (decl) == 0)
1422 if (DECL_EXTERNAL (decl))
1424 /* Don't mention a nested function under its parent. */
1425 context = decl_function_context (decl);
1426 if (context == current_function_decl)
1428 if (GET_CODE (DECL_RTL (decl)) != MEM
1429 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
1433 fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP,
1434 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)),
1435 TREE_PUBLIC (decl) ? 'F' : 'f');
1437 current_sym_code = N_FUN;
1438 current_sym_addr = XEXP (DECL_RTL (decl), 0);
1440 if (TREE_TYPE (type))
1441 dbxout_type (TREE_TYPE (type), 0, 0);
1443 dbxout_type (void_type_node, 0, 0);
1445 /* For a nested function, when that function is compiled,
1446 mention the containing function name
1447 as well as (since dbx wants it) our own assembler-name. */
1449 fprintf (asmfile, ",%s,%s",
1450 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)),
1451 IDENTIFIER_POINTER (DECL_NAME (context)));
1453 dbxout_finish_symbol (decl);
1458 /* This seems all wrong. Outputting most kinds of types gives no name
1459 at all. A true definition gives no name; a cross-ref for a
1460 structure can give the tag name, but not a type name.
1461 It seems that no typedef name is defined by outputting a type. */
1463 /* If this typedef name was defined by outputting the type,
1464 don't duplicate it. */
1465 if (typevec[TYPE_SYMTAB_ADDRESS (type)] == TYPE_DEFINED
1466 && TYPE_NAME (TREE_TYPE (decl)) == decl)
1469 /* Don't output the same typedef twice.
1470 And don't output what language-specific stuff doesn't want output. */
1471 if (TREE_ASM_WRITTEN (decl) || DECL_IGNORED_P (decl))
1480 if (DECL_NAME (decl))
1482 /* Nonzero means we must output a tag as well as a typedef. */
1485 /* Handle the case of a C++ structure or union
1486 where the TYPE_NAME is a TYPE_DECL
1487 which gives both a typedef name and a tag. */
1488 /* dbx requires the tag first and the typedef second. */
1489 if ((TREE_CODE (type) == RECORD_TYPE
1490 || TREE_CODE (type) == UNION_TYPE)
1491 && TYPE_NAME (type) == decl
1492 && !(use_gnu_debug_info_extensions && have_used_extensions)
1493 && !TREE_ASM_WRITTEN (TYPE_NAME (type))
1494 /* Distinguish the implicit typedefs of C++
1495 from explicit ones that might be found in C. */
1496 && DECL_SOURCE_LINE (decl) == 0)
1498 tree name = TYPE_NAME (type);
1499 if (TREE_CODE (name) == TYPE_DECL)
1500 name = DECL_NAME (name);
1502 current_sym_code = DBX_TYPE_DECL_STABS_CODE;
1503 current_sym_value = 0;
1504 current_sym_addr = 0;
1505 current_sym_nchars = 2 + IDENTIFIER_LENGTH (name);
1507 fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP,
1508 IDENTIFIER_POINTER (name));
1509 dbxout_type (type, 1, 0);
1510 dbxout_finish_symbol (NULL_TREE);
1513 /* Output typedef name. */
1514 fprintf (asmfile, "%s \"%s:", ASM_STABS_OP,
1515 IDENTIFIER_POINTER (DECL_NAME (decl)));
1517 /* Short cut way to output a tag also. */
1518 if ((TREE_CODE (type) == RECORD_TYPE
1519 || TREE_CODE (type) == UNION_TYPE)
1520 && TYPE_NAME (type) == decl)
1522 if (use_gnu_debug_info_extensions && have_used_extensions)
1524 putc ('T', asmfile);
1525 TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1;
1527 #if 0 /* Now we generate the tag for this case up above. */
1533 putc ('t', asmfile);
1534 current_sym_code = DBX_TYPE_DECL_STABS_CODE;
1536 dbxout_type (type, 1, 0);
1537 dbxout_finish_symbol (decl);
1541 /* Don't output a tag if this is an incomplete type (TYPE_SIZE is
1542 zero). This prevents the sun4 Sun OS 4.x dbx from crashing. */
1544 if (tag_needed && TYPE_NAME (type) != 0 && TYPE_SIZE (type) != 0
1545 && !TREE_ASM_WRITTEN (TYPE_NAME (type)))
1547 /* For a TYPE_DECL with no name, but the type has a name,
1549 This is what represents `struct foo' with no typedef. */
1550 /* In C++, the name of a type is the corresponding typedef.
1551 In C, it is an IDENTIFIER_NODE. */
1552 tree name = TYPE_NAME (type);
1553 if (TREE_CODE (name) == TYPE_DECL)
1554 name = DECL_NAME (name);
1556 current_sym_code = DBX_TYPE_DECL_STABS_CODE;
1557 current_sym_value = 0;
1558 current_sym_addr = 0;
1559 current_sym_nchars = 2 + IDENTIFIER_LENGTH (name);
1561 fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP,
1562 IDENTIFIER_POINTER (name));
1563 dbxout_type (type, 1, 0);
1564 dbxout_finish_symbol (NULL_TREE);
1568 /* If an enum type has no name, it cannot be referred to,
1569 but we must output it anyway, since the enumeration constants
1570 can be referred to. */
1571 if (!did_output && TREE_CODE (type) == ENUMERAL_TYPE)
1573 current_sym_code = DBX_TYPE_DECL_STABS_CODE;
1574 current_sym_value = 0;
1575 current_sym_addr = 0;
1576 current_sym_nchars = 2;
1578 /* Some debuggers fail when given NULL names, so give this a
1579 harmless name of ` '. */
1580 fprintf (asmfile, "%s \" :T", ASM_STABS_OP);
1581 dbxout_type (type, 1, 0);
1582 dbxout_finish_symbol (NULL_TREE);
1585 /* Prevent duplicate output of a typedef. */
1586 TREE_ASM_WRITTEN (decl) = 1;
1591 /* Parm decls go in their own separate chains
1592 and are output by dbxout_reg_parms and dbxout_parms. */
1596 /* Named return value, treat like a VAR_DECL. */
1598 if (DECL_RTL (decl) == 0)
1600 /* Don't mention a variable that is external.
1601 Let the file that defines it describe it. */
1602 if (DECL_EXTERNAL (decl))
1605 /* If the variable is really a constant
1606 and not written in memory, inform the debugger. */
1607 if (TREE_STATIC (decl) && TREE_READONLY (decl)
1608 && DECL_INITIAL (decl) != 0
1609 && ! TREE_ASM_WRITTEN (decl)
1610 && (DECL_FIELD_CONTEXT (decl) == NULL_TREE
1611 || TREE_CODE (DECL_FIELD_CONTEXT (decl)) == BLOCK))
1613 if (TREE_PUBLIC (decl) == 0)
1615 /* The sun4 assembler does not grok this. */
1616 char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
1617 if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE
1618 || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE)
1620 HOST_WIDE_INT ival = TREE_INT_CST_LOW (DECL_INITIAL (decl));
1621 #ifdef DBX_OUTPUT_CONSTANT_SYMBOL
1622 DBX_OUTPUT_CONSTANT_SYMBOL (asmfile, name, ival);
1624 fprintf (asmfile, "%s \"%s:c=i%d\",0x%x,0,0,0\n",
1625 ASM_STABS_OP, name, ival, N_LSYM);
1629 else if (TREE_CODE (TREE_TYPE (decl)) == REAL_TYPE)
1631 /* don't know how to do this yet. */
1635 /* else it is something we handle like a normal variable. */
1638 DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, 0);
1639 #ifdef LEAF_REG_REMAP
1641 leaf_renumber_regs_insn (DECL_RTL (decl));
1644 /* Don't mention a variable at all
1645 if it was completely optimized into nothingness.
1647 If DECL was from an inline function, then it's rtl
1648 is not identically the rtl that was used in this
1649 particular compilation. */
1650 if (GET_CODE (DECL_RTL (decl)) == REG)
1652 regno = REGNO (DECL_RTL (decl));
1653 if (regno >= FIRST_PSEUDO_REGISTER)
1656 else if (GET_CODE (DECL_RTL (decl)) == SUBREG)
1658 rtx value = DECL_RTL (decl);
1660 while (GET_CODE (value) == SUBREG)
1662 offset += SUBREG_WORD (value);
1663 value = SUBREG_REG (value);
1665 if (GET_CODE (value) == REG)
1667 regno = REGNO (value);
1668 if (regno >= FIRST_PSEUDO_REGISTER)
1672 alter_subreg (DECL_RTL (decl));
1675 /* The kind-of-variable letter depends on where
1676 the variable is and on the scope of its name:
1677 G and N_GSYM for static storage and global scope,
1678 S for static storage and file scope,
1679 V for static storage and local scope,
1680 for those two, use N_LCSYM if data is in bss segment,
1681 N_STSYM if in data segment, N_FUN otherwise.
1682 (We used N_FUN originally, then changed to N_STSYM
1683 to please GDB. However, it seems that confused ld.
1684 Now GDB has been fixed to like N_FUN, says Kingdon.)
1685 no letter at all, and N_LSYM, for auto variable,
1686 r and N_RSYM for register variable. */
1688 if (GET_CODE (DECL_RTL (decl)) == MEM
1689 && GET_CODE (XEXP (DECL_RTL (decl), 0)) == SYMBOL_REF)
1691 if (TREE_PUBLIC (decl))
1694 current_sym_code = N_GSYM;
1698 current_sym_addr = XEXP (DECL_RTL (decl), 0);
1700 letter = decl_function_context (decl) ? 'V' : 'S';
1702 if (!DECL_INITIAL (decl))
1703 current_sym_code = N_LCSYM;
1704 else if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl))
1705 /* This is not quite right, but it's the closest
1706 of all the codes that Unix defines. */
1707 current_sym_code = DBX_STATIC_CONST_VAR_CODE;
1710 /* Ultrix `as' seems to need this. */
1711 #ifdef DBX_STATIC_STAB_DATA_SECTION
1714 current_sym_code = N_STSYM;
1718 else if (regno >= 0)
1721 current_sym_code = N_RSYM;
1722 current_sym_value = DBX_REGISTER_NUMBER (regno);
1724 else if (GET_CODE (DECL_RTL (decl)) == MEM
1725 && (GET_CODE (XEXP (DECL_RTL (decl), 0)) == MEM
1726 || (GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG
1727 && REGNO (XEXP (DECL_RTL (decl), 0)) != FRAME_POINTER_REGNUM)))
1728 /* If the value is indirect by memory or by a register
1729 that isn't the frame pointer
1730 then it means the object is variable-sized and address through
1731 that register or stack slot. DBX has no way to represent this
1732 so all we can do is output the variable as a pointer.
1733 If it's not a parameter, ignore it.
1734 (VAR_DECLs like this can be made by integrate.c.) */
1736 if (GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG)
1739 current_sym_code = N_RSYM;
1740 current_sym_value = DBX_REGISTER_NUMBER (REGNO (XEXP (DECL_RTL (decl), 0)));
1744 current_sym_code = N_LSYM;
1745 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))).
1746 We want the value of that CONST_INT. */
1748 = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (DECL_RTL (decl), 0), 0));
1751 /* Effectively do build_pointer_type, but don't cache this type,
1752 since it might be temporary whereas the type it points to
1753 might have been saved for inlining. */
1754 /* Don't use REFERENCE_TYPE because dbx can't handle that. */
1755 type = make_node (POINTER_TYPE);
1756 TREE_TYPE (type) = TREE_TYPE (decl);
1758 else if (GET_CODE (DECL_RTL (decl)) == MEM
1759 && GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG)
1761 current_sym_code = N_LSYM;
1762 current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (decl), 0));
1764 else if (GET_CODE (DECL_RTL (decl)) == MEM
1765 && GET_CODE (XEXP (DECL_RTL (decl), 0)) == PLUS
1766 && GET_CODE (XEXP (XEXP (DECL_RTL (decl), 0), 1)) == CONST_INT)
1768 current_sym_code = N_LSYM;
1769 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
1770 We want the value of that CONST_INT. */
1771 current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (decl), 0));
1773 else if (GET_CODE (DECL_RTL (decl)) == MEM
1774 && GET_CODE (XEXP (DECL_RTL (decl), 0)) == CONST)
1776 /* Handle an obscure case which can arise when optimizing and
1777 when there are few available registers. (This is *always*
1778 the case for i386/i486 targets). The DECL_RTL looks like
1779 (MEM (CONST ...)) even though this variable is a local `auto'
1780 or a local `register' variable. In effect, what has happened
1781 is that the reload pass has seen that all assignments and
1782 references for one such a local variable can be replaced by
1783 equivalent assignments and references to some static storage
1784 variable, thereby avoiding the need for a register. In such
1785 cases we're forced to lie to debuggers and tell them that
1786 this variable was itself `static'. */
1787 current_sym_code = N_LCSYM;
1789 current_sym_addr = XEXP (XEXP (DECL_RTL (decl), 0), 0);
1792 /* Address might be a MEM, when DECL is a variable-sized object.
1793 Or it might be const0_rtx, meaning previous passes
1794 want us to ignore this variable. */
1797 /* Ok, start a symtab entry and output the variable name. */
1800 #ifdef DBX_STATIC_BLOCK_START
1801 DBX_STATIC_BLOCK_START (asmfile, current_sym_code);
1804 /* One slight hitch: if this is a VAR_DECL which is a static
1805 class member, we must put out the mangled name instead of the
1809 /* Note also that static member (variable) names DO NOT begin
1810 with underscores in .stabs directives. */
1811 if (DECL_LANG_SPECIFIC (decl))
1812 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
1814 name = IDENTIFIER_POINTER (DECL_NAME (decl));
1815 fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, name);
1817 if (letter) putc (letter, asmfile);
1818 dbxout_type (type, 0, 0);
1819 dbxout_finish_symbol (decl);
1821 #ifdef DBX_STATIC_BLOCK_END
1822 DBX_STATIC_BLOCK_END (asmfile, current_sym_code);
1829 dbxout_prepare_symbol (decl)
1833 char *filename = DECL_SOURCE_FILE (decl);
1835 dbxout_source_file (asmfile, filename);
1840 dbxout_finish_symbol (sym)
1843 #ifdef DBX_FINISH_SYMBOL
1844 DBX_FINISH_SYMBOL (sym);
1847 if (use_gnu_debug_info_extensions && sym != 0)
1848 line = DECL_SOURCE_LINE (sym);
1850 fprintf (asmfile, "\",%d,0,%d,", current_sym_code, line);
1851 if (current_sym_addr)
1852 output_addr_const (asmfile, current_sym_addr);
1854 fprintf (asmfile, "%d", current_sym_value);
1855 putc ('\n', asmfile);
1859 /* Output definitions of all the decls in a chain. */
1867 dbxout_symbol (syms, 1);
1868 syms = TREE_CHAIN (syms);
1872 /* The following two functions output definitions of function parameters.
1873 Each parameter gets a definition locating it in the parameter list.
1874 Each parameter that is a register variable gets a second definition
1875 locating it in the register.
1877 Printing or argument lists in gdb uses the definitions that
1878 locate in the parameter list. But reference to the variable in
1879 expressions uses preferentially the definition as a register. */
1881 /* Output definitions, referring to storage in the parmlist,
1882 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1885 dbxout_parms (parms)
1888 for (; parms; parms = TREE_CHAIN (parms))
1889 if (DECL_NAME (parms) && TREE_TYPE (parms) != error_mark_node)
1891 dbxout_prepare_symbol (parms);
1893 /* Perform any necessary register eliminations on the parameter's rtl,
1894 so that the debugging output will be accurate. */
1895 DECL_INCOMING_RTL (parms)
1896 = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
1897 DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX);
1898 #ifdef LEAF_REG_REMAP
1901 leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms));
1902 leaf_renumber_regs_insn (DECL_RTL (parms));
1906 if (PARM_PASSED_IN_MEMORY (parms))
1908 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1910 /* ??? Here we assume that the parm address is indexed
1911 off the frame pointer or arg pointer.
1912 If that is not true, we produce meaningless results,
1913 but do not crash. */
1914 if (GET_CODE (addr) == PLUS
1915 && GET_CODE (XEXP (addr, 1)) == CONST_INT)
1916 current_sym_value = INTVAL (XEXP (addr, 1));
1918 current_sym_value = 0;
1920 current_sym_code = N_PSYM;
1921 current_sym_addr = 0;
1924 if (DECL_NAME (parms))
1926 current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms));
1928 fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP,
1929 IDENTIFIER_POINTER (DECL_NAME (parms)),
1930 DBX_MEMPARM_STABS_LETTER);
1934 current_sym_nchars = 8;
1935 fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP,
1936 DBX_MEMPARM_STABS_LETTER);
1939 if (GET_CODE (DECL_RTL (parms)) == REG
1940 && REGNO (DECL_RTL (parms)) >= 0
1941 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1942 dbxout_type (DECL_ARG_TYPE (parms), 0, 0);
1945 int original_value = current_sym_value;
1947 /* This is the case where the parm is passed as an int or double
1948 and it is converted to a char, short or float and stored back
1949 in the parmlist. In this case, describe the parm
1950 with the variable's declared type, and adjust the address
1951 if the least significant bytes (which we are using) are not
1953 #if BYTES_BIG_ENDIAN
1954 if (TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1955 current_sym_value += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1956 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1959 if (GET_CODE (DECL_RTL (parms)) == MEM
1960 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1961 && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
1962 && INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == current_sym_value)
1963 dbxout_type (TREE_TYPE (parms), 0, 0);
1966 current_sym_value = original_value;
1967 dbxout_type (DECL_ARG_TYPE (parms), 0, 0);
1970 current_sym_value = DEBUGGER_ARG_OFFSET (current_sym_value, addr);
1971 dbxout_finish_symbol (parms);
1973 else if (GET_CODE (DECL_RTL (parms)) == REG)
1976 char regparm_letter;
1977 /* Parm passed in registers and lives in registers or nowhere. */
1979 current_sym_code = DBX_REGPARM_STABS_CODE;
1980 regparm_letter = DBX_REGPARM_STABS_LETTER;
1981 current_sym_addr = 0;
1983 /* If parm lives in a register, use that register;
1984 pretend the parm was passed there. It would be more consistent
1985 to describe the register where the parm was passed,
1986 but in practice that register usually holds something else. */
1987 if (REGNO (DECL_RTL (parms)) >= 0
1988 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1989 best_rtl = DECL_RTL (parms);
1990 /* If the parm lives nowhere,
1991 use the register where it was passed. */
1993 best_rtl = DECL_INCOMING_RTL (parms);
1994 current_sym_value = DBX_REGISTER_NUMBER (REGNO (best_rtl));
1997 if (DECL_NAME (parms))
1999 current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms));
2000 fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP,
2001 IDENTIFIER_POINTER (DECL_NAME (parms)),
2006 current_sym_nchars = 8;
2007 fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP,
2011 dbxout_type (DECL_ARG_TYPE (parms), 0, 0);
2012 dbxout_finish_symbol (parms);
2014 else if (GET_CODE (DECL_RTL (parms)) == MEM
2015 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG)
2016 /* && rtx_equal_p (XEXP (DECL_RTL (parms), 0),
2017 DECL_INCOMING_RTL (parms))) */
2019 /* Parm was passed via invisible reference.
2020 That is, its address was passed in a register.
2021 Output it as if it lived in that register.
2022 The debugger will know from the type
2023 that it was actually passed by invisible reference. */
2025 char regparm_letter;
2026 /* Parm passed in registers and lives in registers or nowhere. */
2028 current_sym_code = DBX_REGPARM_STABS_CODE;
2029 regparm_letter = DBX_REGPARM_STABS_LETTER;
2031 /* DECL_RTL looks like (MEM (REG...). Get the register number. */
2032 current_sym_value = REGNO (XEXP (DECL_RTL (parms), 0));
2033 current_sym_addr = 0;
2036 if (DECL_NAME (parms))
2038 current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms)));
2040 fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP,
2041 IDENTIFIER_POINTER (DECL_NAME (parms)),
2042 DBX_REGPARM_STABS_LETTER);
2046 current_sym_nchars = 8;
2047 fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP,
2048 DBX_REGPARM_STABS_LETTER);
2051 dbxout_type (TREE_TYPE (parms), 0, 0);
2052 dbxout_finish_symbol (parms);
2054 else if (GET_CODE (DECL_RTL (parms)) == MEM
2055 && XEXP (DECL_RTL (parms), 0) != const0_rtx)
2057 /* Parm was passed in registers but lives on the stack. */
2059 current_sym_code = N_PSYM;
2060 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
2061 in which case we want the value of that CONST_INT,
2062 or (MEM (REG ...)) or (MEM (MEM ...)),
2063 in which case we use a value of zero. */
2064 if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
2065 || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
2066 current_sym_value = 0;
2068 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
2069 current_sym_addr = 0;
2072 if (DECL_NAME (parms))
2074 current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms)));
2076 fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP,
2077 IDENTIFIER_POINTER (DECL_NAME (parms)),
2078 DBX_MEMPARM_STABS_LETTER);
2082 current_sym_nchars = 8;
2083 fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP,
2084 DBX_MEMPARM_STABS_LETTER);
2088 = DEBUGGER_ARG_OFFSET (current_sym_value,
2089 XEXP (DECL_RTL (parms), 0));
2090 dbxout_type (TREE_TYPE (parms), 0, 0);
2091 dbxout_finish_symbol (parms);
2096 /* Output definitions for the places where parms live during the function,
2097 when different from where they were passed, when the parms were passed
2100 It is not useful to do this for parms passed in registers
2101 that live during the function in different registers, because it is
2102 impossible to look in the passed register for the passed value,
2103 so we use the within-the-function register to begin with.
2105 PARMS is a chain of PARM_DECL nodes. */
2108 dbxout_reg_parms (parms)
2111 for (; parms; parms = TREE_CHAIN (parms))
2112 if (DECL_NAME (parms))
2114 dbxout_prepare_symbol (parms);
2116 /* Report parms that live in registers during the function
2117 but were passed in memory. */
2118 if (GET_CODE (DECL_RTL (parms)) == REG
2119 && REGNO (DECL_RTL (parms)) >= 0
2120 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
2121 && PARM_PASSED_IN_MEMORY (parms))
2123 current_sym_code = N_RSYM;
2124 current_sym_value = DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)));
2125 current_sym_addr = 0;
2128 if (DECL_NAME (parms))
2130 current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms));
2131 fprintf (asmfile, "%s \"%s:r", ASM_STABS_OP,
2132 IDENTIFIER_POINTER (DECL_NAME (parms)));
2136 current_sym_nchars = 8;
2137 fprintf (asmfile, "%s \"(anon):r", ASM_STABS_OP);
2139 dbxout_type (TREE_TYPE (parms), 0, 0);
2140 dbxout_finish_symbol (parms);
2142 /* Report parms that live in memory but not where they were passed. */
2143 else if (GET_CODE (DECL_RTL (parms)) == MEM
2144 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
2145 && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
2146 && PARM_PASSED_IN_MEMORY (parms)
2147 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
2149 #if 0 /* ??? It is not clear yet what should replace this. */
2150 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
2151 /* A parm declared char is really passed as an int,
2152 so it occupies the least significant bytes.
2153 On a big-endian machine those are not the low-numbered ones. */
2154 #if BYTES_BIG_ENDIAN
2155 if (offset != -1 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
2156 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
2157 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
2159 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
2161 current_sym_code = N_LSYM;
2162 current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (parms), 0));
2163 current_sym_addr = 0;
2165 if (DECL_NAME (parms))
2167 current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms));
2168 fprintf (asmfile, "%s \"%s:", ASM_STABS_OP,
2169 IDENTIFIER_POINTER (DECL_NAME (parms)));
2173 current_sym_nchars = 8;
2174 fprintf (asmfile, "%s \"(anon):", ASM_STABS_OP);
2176 dbxout_type (TREE_TYPE (parms), 0, 0);
2177 dbxout_finish_symbol (parms);
2180 else if (GET_CODE (DECL_RTL (parms)) == MEM
2181 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG)
2183 /* Parm was passed via invisible reference.
2184 That is, its address was passed in a register.
2185 Output it as if it lived in that register.
2186 The debugger will know from the type
2187 that it was actually passed by invisible reference. */
2189 current_sym_code = N_RSYM;
2191 /* DECL_RTL looks like (MEM (REG...). Get the register number. */
2192 current_sym_value = REGNO (XEXP (DECL_RTL (parms), 0));
2193 current_sym_addr = 0;
2196 if (DECL_NAME (parms))
2198 current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms)));
2200 fprintf (asmfile, "%s \"%s:r", ASM_STABS_OP,
2201 IDENTIFIER_POINTER (DECL_NAME (parms)));
2205 current_sym_nchars = 8;
2206 fprintf (asmfile, "%s \"(anon):r", ASM_STABS_OP);
2209 dbxout_type (TREE_TYPE (parms), 0, 0);
2210 dbxout_finish_symbol (parms);
2216 /* Given a chain of ..._TYPE nodes (as come in a parameter list),
2217 output definitions of those names, in raw form */
2225 putc (',', asmfile);
2226 dbxout_type (TREE_VALUE (args), 0, 0);
2228 args = TREE_CHAIN (args);
2232 /* Given a chain of ..._TYPE nodes,
2233 find those which have typedef names and output those names.
2234 This is to ensure those types get output. */
2237 dbxout_types (types)
2238 register tree types;
2242 if (TYPE_NAME (types)
2243 && TREE_CODE (TYPE_NAME (types)) == TYPE_DECL
2244 && ! TREE_ASM_WRITTEN (TYPE_NAME (types)))
2245 dbxout_symbol (TYPE_NAME (types), 1);
2246 types = TREE_CHAIN (types);
2250 /* Output everything about a symbol block (a BLOCK node
2251 that represents a scope level),
2252 including recursive output of contained blocks.
2254 BLOCK is the BLOCK node.
2255 DEPTH is its depth within containing symbol blocks.
2256 ARGS is usually zero; but for the outermost block of the
2257 body of a function, it is a chain of PARM_DECLs for the function parameters.
2258 We output definitions of all the register parms
2259 as if they were local variables of that block.
2261 If -g1 was used, we count blocks just the same, but output nothing
2262 except for the outermost block.
2264 Actually, BLOCK may be several blocks chained together.
2265 We handle them all in sequence. */
2268 dbxout_block (block, depth, args)
2269 register tree block;
2277 /* Ignore blocks never expanded or otherwise marked as real. */
2278 if (TREE_USED (block))
2280 #ifndef DBX_LBRAC_FIRST
2281 /* In dbx format, the syms of a block come before the N_LBRAC. */
2282 if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0)
2283 dbxout_syms (BLOCK_VARS (block));
2285 dbxout_reg_parms (args);
2288 /* Now output an N_LBRAC symbol to represent the beginning of
2289 the block. Use the block's tree-walk order to generate
2290 the assembler symbols LBBn and LBEn
2291 that final will define around the code in this block. */
2292 if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE)
2295 blocknum = next_block_number++;
2296 ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum);
2298 if (BLOCK_HANDLER_BLOCK (block))
2300 /* A catch block. Must precede N_LBRAC. */
2301 tree decl = BLOCK_VARS (block);
2304 #ifdef DBX_OUTPUT_CATCH
2305 DBX_OUTPUT_CATCH (asmfile, decl, buf);
2307 fprintf (asmfile, "%s \"%s:C1\",%d,0,0,", ASM_STABS_OP,
2308 IDENTIFIER_POINTER (DECL_NAME (decl)), N_CATCH);
2309 assemble_name (asmfile, buf);
2310 fprintf (asmfile, "\n");
2312 decl = TREE_CHAIN (decl);
2316 #ifdef DBX_OUTPUT_LBRAC
2317 DBX_OUTPUT_LBRAC (asmfile, buf);
2319 fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_LBRAC);
2320 assemble_name (asmfile, buf);
2321 #if DBX_BLOCKS_FUNCTION_RELATIVE
2322 fputc ('-', asmfile);
2323 assemble_name (asmfile, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)));
2325 fprintf (asmfile, "\n");
2329 /* Count blocks the same way regardless of debug_info_level. */
2330 next_block_number++;
2332 #ifdef DBX_LBRAC_FIRST
2333 /* On some weird machines, the syms of a block
2334 come after the N_LBRAC. */
2335 if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0)
2336 dbxout_syms (BLOCK_VARS (block));
2338 dbxout_reg_parms (args);
2341 /* Output the subblocks. */
2342 dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE);
2344 /* Refer to the marker for the end of the block. */
2345 if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE)
2348 ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum);
2349 #ifdef DBX_OUTPUT_RBRAC
2350 DBX_OUTPUT_RBRAC (asmfile, buf);
2352 fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_RBRAC);
2353 assemble_name (asmfile, buf);
2354 #if DBX_BLOCKS_FUNCTION_RELATIVE
2355 fputc ('-', asmfile);
2356 assemble_name (asmfile, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)));
2358 fprintf (asmfile, "\n");
2362 block = BLOCK_CHAIN (block);
2366 /* Output the information about a function and its arguments and result.
2367 Usually this follows the function's code,
2368 but on some systems, it comes before. */
2371 dbxout_really_begin_function (decl)
2374 dbxout_symbol (decl, 0);
2375 dbxout_parms (DECL_ARGUMENTS (decl));
2376 if (DECL_NAME (DECL_RESULT (decl)) != 0)
2377 dbxout_symbol (DECL_RESULT (decl), 1);
2380 /* Called at beginning of output of function definition. */
2383 dbxout_begin_function (decl)
2386 #ifdef DBX_FUNCTION_FIRST
2387 dbxout_really_begin_function (decl);
2391 /* Output dbx data for a function definition.
2392 This includes a definition of the function name itself (a symbol),
2393 definitions of the parameters (locating them in the parameter list)
2394 and then output the block that makes up the function's body
2395 (including all the auto variables of the function). */
2398 dbxout_function (decl)
2401 #ifndef DBX_FUNCTION_FIRST
2402 dbxout_really_begin_function (decl);
2404 dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl));
2405 #ifdef DBX_OUTPUT_FUNCTION_END
2406 DBX_OUTPUT_FUNCTION_END (asmfile, decl);
2409 #endif /* DBX_DEBUGGING_INFO */