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 #undef DBX_DEBUGGING_INFO
  28 #define DBX_DEBUGGING_INFO
  29
  30 /* Generate SDB debugging information by default. */
  31
  32 #ifndef PREFERRED_DEBUGGING_TYPE
  33 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
  34 #endif
  35
  36 /* Be function-relative for block and source line stab directives.  */
  37
  38 #undef DBX_BLOCKS_FUNCTION_RELATIVE
  39 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
  40
  41 /* but, to make this work, functions must appear prior to line info.  */
  42
  43 #undef DBX_FUNCTION_FIRST
  44 #define DBX_FUNCTION_FIRST
  45
  46 /* Generate a blank trailing N_SO to mark the end of the .o file, since
  47    we can't depend upon the linker to mark .o file boundaries with
  48    embedded stabs.  */
  49
  50 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
  51 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
  52   fprintf (FILE,                                                        \
  53            "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
  54
  55 /* Like block addresses, stabs line numbers are relative to the
  56    current function.  */
  57
  58 #undef ASM_OUTPUT_SOURCE_LINE
  59 #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE)                      \
  60 { if (write_symbols == SDB_DEBUG) {                             \
  61     fprintf ((FILE), "\t.ln\t%d\n",                             \
  62              ((sdb_begin_function_line > -1)                    \
  63               ? (LINE) - sdb_begin_function_line : 1));         \
  64   } else if (write_symbols == DBX_DEBUG) {                      \
  65     static int sym_lineno = 1;                                  \
  66     char buffer[256];                                           \
  67     ASM_GENERATE_INTERNAL_LABEL (buffer, "LM", sym_lineno);     \
  68     fprintf (FILE, ".stabn 68,0,%d,", LINE);                    \
  69     assemble_name (FILE, buffer);                               \
  70     putc ('-', FILE);                                           \
  71     assemble_name (FILE,                                        \
  72                    XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
  73     putc ('\n', FILE);                                          \
  74     ASM_OUTPUT_INTERNAL_LABEL (FILE, "LM", sym_lineno);         \
  75     sym_lineno++;                                               \
  76   } }
  77
  78 /* When generating stabs debugging, use N_BINCL entries.  */
  79
  80 #undef DBX_USE_BINCL
  81 #define DBX_USE_BINCL
  82
  83 /* There is no limit to the length of stabs strings.  */
  84
  85 #ifndef DBX_CONTIN_LENGTH
  86 #define DBX_CONTIN_LENGTH 0
  87 #endif