gcc/config/i386/svr3dbx.h

   1 /* Definitions for Intel 386 running system V, using dbx-in-coff encapsulation.
   2    Copyright (C) 1992, 1995 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 #include "i386/svr3gas.h"
  22
  23 /* We do not want to output SDB debugging information.  */
  24
  25 #undef SDB_DEBUGGING_INFO
  26
  27 /* We want to output DBX debugging information.  */
  28
  29 #define DBX_DEBUGGING_INFO
  30
  31 /* Compensate for botch in dbxout_init/dbxout_source_file which
  32    unconditionally drops the first character from ltext_label_name */
  33
  34 #undef ASM_GENERATE_INTERNAL_LABEL
  35 #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER)  \
  36     sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER))
  37
  38 /* With the current gas, .align N aligns to an N-byte boundary.
  39    This is done to be compatible with the system assembler.
  40    You must specify -DOTHER_ALIGN when building gas-1.38.1.  */
  41
  42 #undef ASM_OUTPUT_ALIGN
  43 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
  44      if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
  45
  46 /* Align labels, etc. at 4-byte boundaries.
  47    For the 486, align to 16-byte boundary for sake of cache.  */
  48
  49 #undef ASM_OUTPUT_ALIGN_CODE
  50 #define ASM_OUTPUT_ALIGN_CODE(FILE)                     \
  51      fprintf ((FILE), "\t.align %d,0x90\n",             \
  52               1 << i386_align_jumps)
  53
  54 /* Align start of loop at 4-byte boundary.  */
  55
  56 #undef ASM_OUTPUT_LOOP_ALIGN
  57 #define ASM_OUTPUT_LOOP_ALIGN(FILE) \
  58      fprintf ((FILE), "\t.align %d,0x90\n", 1 << i386_align_loops);
  59
  60
  61 /* Additional overrides needed for dbx-in-coff gas, mostly taken from pbb.h */
  62
  63 /* Although the gas we use can create .ctor and .dtor sections from N_SETT
  64    stabs, it does not support section directives, so we need to have the loader
  65    define the lists.
  66  */
  67 #define CTOR_LISTS_DEFINED_EXTERNALLY
  68
  69 /* Use crt1.o as a startup file and crtn.o as a closing file.  */
  70 /*
  71  * The loader directive file svr3.ifile defines how to merge the constructor
  72  * sections into the data section.  Also, since gas only puts out those
  73  * sections in response to N_SETT stabs, and does not (yet) have a
  74  * ".sections" directive, svr3.ifile also defines the list symbols
  75  * __DTOR_LIST__ and __CTOR_LIST__.
  76  */
  77 #undef STARTFILE_SPEC
  78 #define STARTFILE_SPEC \
  79   "%{!r:%{!z:svr3.ifile%s}%{z:svr3z.ifile%s}}\
  80    %{pg:gcrt1.o%s}%{!pg:%{posix:%{p:mcrtp1.o%s}%{!p:crtp1.o%s}}%{!posix:%{p:mcrt1.o%s}%{!p:crt1.o%s}}} \
  81    %{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp}"
  82
  83 #define ENDFILE_SPEC "crtn.o%s"
  84
  85 #undef LIB_SPEC
  86 #define LIB_SPEC "%{posix:-lcposix} %{shlib:-lc_s} -lc -lg"