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/* Configuration file for an m68k OpenBSD target.
Copyright (C) 1999 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, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* m68k is an old configuration that does not yet use the TARGET_CPU_DEFAULT
framework. */
#define TARGET_DEFAULT (MASK_BITFIELD | MASK_68881 | MASK_68020)
#include <m68k/m68k.h>
/* Get generic OpenBSD definitions. */
#define OBSD_OLD_GAS
#include <openbsd.h>
/* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified.
This will control the use of inline 68881 insns in certain macros. */
#undef CPP_SPEC
#define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__ -D__HAVE_FPU__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_POSIX_THREADS}"
/* Run-time target specifications. */
#define CPP_PREDEFINES "-D__unix__ -D__m68k__ -D__mc68000__ -D__mc68020__ -D__OpenBSD__ -Asystem=unix -Asystem=OpenBSD -Acpu=m68k -Amachine=m68k"
/* m68k as needs to know about the processor subtype. */
#undef ASM_SPEC
#define ASM_SPEC "%| %{m68030} %{m68040} %{m68060} %{fpic:-k} %{fPIC:-k -K}"
/* Layout of source language data types. */
/* This must agree with <machine/ansi.h> */
#undef SIZE_TYPE
#define SIZE_TYPE "unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
/* Storage layout. */
/* Every structure or union's size must be a multiple of 2 bytes. */
#define STRUCTURE_SIZE_BOUNDARY 16
/* Specific options for DBX Output. */
/* This is BSD, so it wants DBX format. */
#define DBX_DEBUGGING_INFO
/* Do not break .stabs pseudos into continuations. */
#define DBX_CONTIN_LENGTH 0
/* This is the char to use for continuation (in case we need to turn
continuation back on). */
#define DBX_CONTIN_CHAR '?'
/* Stack & calling: aggregate returns. */
/* Don't default to pcc-struct-return, because gcc is the only compiler, and
we want to retain compatibility with older gcc versions. */
#define DEFAULT_PCC_STRUCT_RETURN 0
/* Assembler format: exception region output. */
/* All configurations that don't use elf must be explicit about not using
dwarf unwind information. egcs doesn't try too hard to check internal
configuration files... */
#define DWARF2_UNWIND_INFO 0
/* TODO: ASM_OUTPUT_MI_THUNK is busted. I need to figure out
what bra func@PLTPC means under linux, and find the corresponding
construction for our gas/pic setup. */
#if 0
/* Taken from linux.h. Processor dependent optimized code to handle C++
multiple inheritance vtable lookup. */
/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
Used for C++ multiple inheritance. */
#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
do { \
if (DELTA > 0 && DELTA <= 8) \
asm_fprintf (FILE, "\taddq.l %I%d,4(%Rsp)\n", DELTA); \
else if (DELTA < 0 && DELTA >= -8) \
asm_fprintf (FILE, "\tsubq.l %I%d,4(%Rsp)\n", -DELTA); \
else \
asm_fprintf (FILE, "\tadd.l %I%d,4(%Rsp)\n", DELTA); \
\
if (flag_pic) \
{ \
fprintf (FILE, "\tbra.l "); \
assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
fprintf (FILE, "@PLTPC\n"); \
} \
else \
{ \
fprintf (FILE, "\tjmp "); \
assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
fprintf (FILE, "\n"); \
} \
} while (0)
#endif
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