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/* Definitions for Intel 386 running system V, using dbx-in-coff encapsulation.
Copyright (C) 1992 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "i386/svr3gas.h"
/* We do not want to output SDB debugging information. */
#undef SDB_DEBUGGING_INFO
/* We want to output DBX debugging information. */
#define DBX_DEBUGGING_INFO
/* Compensate for botch in dbxout_init/dbxout_source_file which
unconditionally drops the first character from ltext_label_name */
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER))
/* With the current gas, .align N aligns to an N-byte boundary.
This is done to be compatible with the system assembler.
You have specify -DOTHER_ALIGN wenn building gas-1.38.1. */
#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
/* Align labels, etc. at 4-byte boundaries.
For the 486, align to 16-byte boundary for sake of cache. */
#undef ASM_OUTPUT_ALIGN_CODE
#define ASM_OUTPUT_ALIGN_CODE(FILE) \
fprintf ((FILE), "\t.align %d,0x90\n", \
TARGET_486 ? 16 : 4); /* Use log of 16 or log of 4 as arg. */
/* Align start of loop at 4-byte boundary. */
#undef ASM_OUTPUT_LOOP_ALIGN
#define ASM_OUTPUT_LOOP_ALIGN(FILE) \
fprintf ((FILE), "\t.align 4,0x90\n");
/* Additional overrides needed for dbx-in-coff gas, mostly taken from pbb.h */
/* Although the gas we use can create .ctor and .dtor sections from N_SETT
stabs, it does not support section directives, so we need to have the loader
define the lists.
*/
#define CTOR_LISTS_DEFINED_EXTERNALLY
/* similar to default, but allows for the table defined by ld with svr3.ifile.
nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0.
The old check is left in so that the same macro can be used if and when
a future version of gas does support section directives. */
#define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \
if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \
for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \
for (i = nptrs; i >= 1; i--) \
__DTOR_LIST__[i] (); }
/* Use crt1.o as a startup file and crtn.o as a closing file. */
/*
* The loader directive file svr3.ifile defines how to merge the constructor
* sections into the data section. Also, since gas only puts out those
* sections in response to N_SETT stabs, and does not (yet) have a
* ".sections" directive, svr3.ifile also defines the list symbols
* __DTOR_LIST__ and __CTOR_LIST__.
*/
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!r:%{!z:svr3.ifile%s}%{z:svr3z.ifile%s}}\
%{pg:gcrt1.o%s}%{!pg:%{posix:%{p:mcrtp1.o%s}%{!p:crtp1.o%s}}%{!posix:%{p:mcrt1.o%s}%{!p:crt1.o%s}}} \
%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp}"
#define ENDFILE_SPEC "crtn.o%s"
#undef LIB_SPEC
#define LIB_SPEC "%{posix:-lcposix} %{shlib:-lc_s} -lc -lg"
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