/* Configuration file for an m88k 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.  */

/* a.out with DBX. */
#define DBX_DEBUGGING_INFO
#define DEFAULT_GDB_EXTENSIONS 0

#include <aoutos.h>
#include <m88k/m88k.h>

/* <m88k/m88k.h> provided a wrong SET_ASM_OP */
#undef	SET_ASM_OP
#define	SET_ASM_OP	"equ"

/* <m88k/m88k.h> provided wrong SUPPORTS_WEAK and SUPPORTS_ONE_ONLY values */
#undef	SUPPORTS_WEAK
#undef	SUPPORTS_ONE_ONLY

#define	OBSD_HAS_CORRECT_ASM_OPS
#define	OBSD_OLD_GAS
#define	OBSD_NO_DYNAMIC_LIBRARIES

#include <openbsd.h>

/* Macros to be automatically defined.  */
#define CPP_PREDEFINES \
    "-D__m88k__ -D__unix__ -D__OpenBSD__ -Asystem(unix) -Asystem(OpenBSD) -Acpu(m88k) -Amachine(m88k)"

/* If -m88000 is in effect, add -Dmc88000; similarly for -m88100 and -m88110.
   However, reproduce the effect of -Dmc88100 previously in CPP_PREDEFINES.
   Here, the CPU_DEFAULT is assumed to be -m88100.  */
#undef	CPP_SPEC
#define	CPP_SPEC "%{m88000:-D__mc88000__} \
		  %{!m88000:%{m88100:%{m88110:-D__mc88000__}}} \
		  %{!m88000:%{!m88100:%{m88110:-D__mc88110__}}} \
		  %{!m88000:%{!m88110:%{!ansi:%{traditional:-Dmc88100}} \
		  -D__mc88100__ -D__mc88100}} %{posix:-D_POSIX_SOURCE} \
		  %{pthread:-D_REENTRANT}"

/* For the 88k, a float function returns a double in traditional
   mode (and a float in ansi mode).  */
#undef TRADITIONAL_RETURN_FLOAT

/* Layout of source language data types. */

/* This must agree with <machine/_types.h> */
#undef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"

#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long int"

#undef WCHAR_TYPE
#define WCHAR_TYPE "int"

#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32

/* Every structure or union's size must be a multiple of 2 bytes.  */
#undef STRUCTURE_SIZE_BOUNDARY
#define STRUCTURE_SIZE_BOUNDARY 16 

/* Due to the split instruction and data caches, trampolines must cause the
   data cache to be synced before attempting to execute the trampoline code.
   Under OpenBSD, this is done by invoking trap #451 with r2 and r3 set to
   the address of the trampoline area and its size, respectively.  */
#undef FINALIZE_TRAMPOLINE
#define FINALIZE_TRAMPOLINE(TRAMP)					\
  emit_library_call(gen_rtx_SYMBOL_REF (Pmode, "__dcache_sync"),	\
		    0, VOIDmode, 2, (TRAMP), Pmode,			\
		    GEN_INT (TRAMPOLINE_SIZE), Pmode)

#undef TRANSFER_FROM_TRAMPOLINE
#define TRANSFER_FROM_TRAMPOLINE					\
extern void __dcache_sync(int, int);					\
void									\
__dcache_sync (addr, len)						\
     int addr, len;							\
{									\
  /* r2 and r3 are set by the caller and need not be modified */	\
  __asm __volatile ("tb0 0, r0, 451");					\
}

/* problems occur if we're too liberal in preserve_subexpressions_p */
#define	BROKEN_PRESERVE_SUBEXPRESSIONS_P