gcc/config/dbxcoff.h

   1 /* Definitions needed when using stabs embedded in COFF sections.
   2    Copyright (C) 1996 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   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)
   9 any later version.
  10
  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.
  15
  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, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* This file may be included by any COFF target which wishes to
  22    support -gstabs generating stabs in sections, as produced by gas
  23    and understood by gdb.  */
  24
  25 /* Output DBX (stabs) debugging information if doing -gstabs.  */
  26
  27 #define DBX_DEBUGGING_INFO 1
  28
  29 /* Generate SDB debugging information by default.  */
  30
  31 #ifndef PREFERRED_DEBUGGING_TYPE
  32 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
  33 #endif
  34
  35 /* Be function-relative for block and source line stab directives.  */
  36
  37 #undef DBX_BLOCKS_FUNCTION_RELATIVE
  38 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
  39
  40 /* but, to make this work, functions must appear prior to line info.  */
  41
  42 #undef DBX_FUNCTION_FIRST
  43 #define DBX_FUNCTION_FIRST
  44
  45 /* Generate a blank trailing N_SO to mark the end of the .o file, since
  46    we can't depend upon the linker to mark .o file boundaries with
  47    embedded stabs.  */
  48
  49 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
  50 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
  51   asm_fprintf (FILE,                                                    \
  52                "\t.text\n\t.stabs \"\",%d,0,0,%LLetext\n%LLetext:\n", N_SO)
  53
  54 /* Like block addresses, stabs line numbers are relative to the
  55    current function.  */
  56
  57 #undef ASM_OUTPUT_SOURCE_LINE
  58 #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE)                      \
  59 { if (write_symbols == SDB_DEBUG) {                             \
  60     fprintf ((FILE), "\t.ln\t%d\n",                             \
  61              ((sdb_begin_function_line > -1)                    \
  62               ? (LINE) - sdb_begin_function_line : 1));         \
  63   } else if (write_symbols == DBX_DEBUG) {                      \
  64     static int sym_lineno = 1;                                  \
  65     char buffer[256];                                           \
  66     ASM_GENERATE_INTERNAL_LABEL (buffer, "LM", sym_lineno);     \
  67     fprintf (FILE, ".stabn 68,0,%d,", LINE);                    \
  68     assemble_name (FILE, buffer);                               \
  69     putc ('-', FILE);                                           \
  70     assemble_name (FILE,                                        \
  71                    XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
  72     putc ('\n', FILE);                                          \
  73     (*targetm.asm_out.internal_label) (FILE, "LM", sym_lineno);         \
  74     sym_lineno++;                                               \
  75   } }
  76
  77 /* When generating stabs debugging, use N_BINCL entries.  */
  78
  79 #undef DBX_USE_BINCL
  80 #define DBX_USE_BINCL
  81
  82 /* There is no limit to the length of stabs strings.  */
  83
  84 #ifndef DBX_CONTIN_LENGTH
  85 #define DBX_CONTIN_LENGTH 0
  86 #endif