/* Definitions of target machine for GNU compiler,
   for Sun SPARC-V9 on a hypothetical elf format machine.
   Copyright (C) 1994 Free Software Foundation, Inc.
   Contributed by Doug Evans, dje@cygnus.com.

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.  */

/* This is a v9 only compiler.  -mv8 is not expected to work.  If you want
   a v8/v9 compiler, this isn't the place to do it.  */
/* ??? Until real v9 machines exist, all of this is subject to change.  */
/* ??? This file should really be called sp64-sol2.h or some such but that
   would be a bit misleading since no such machines exist yet.  The current
   name is also misleading since the term "elf" is more properly applied to
   embedded configurations.  */

#define SPARCV9 /* See sparc.h.  */

/* ??? We're taking the scheme of including another file and then overriding
   the values we don't like a bit too far here.  The alternative is to more or
   less duplicate all of svr4.h, sparc/sysv4.h, and sparc/sol2.h here
   (suitably cleaned up).  Until real sparc64 machines exist, it's not clear
   which is better.  */

#include "sparc/sol2.h"

/* A v9 compiler with stack-bias, 32 bit integers and 64 bit pointers,
   in a Medium/Anywhere code model environment.  */

#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
  (MASK_V9 + MASK_STACK_BIAS + MASK_MEDANY + MASK_PTR64 + MASK_HARD_QUAD + MASK_EPILOGUE + MASK_FPU)

#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
 "-Dsun -Dsparc -Dunix -D__svr4__ -D__sparc_v9__ \
  -Asystem(unix) -Asystem(svr4) -Acpu(sparc64) -Amachine(sparc64)"

#undef CPP_SPEC
#define CPP_SPEC "\
%{mint64:-D__INT_MAX__=9223372036854775807LL -D__LONG_MAX__=9223372036854775807LL} \
%{mlong64:-D__LONG_MAX__=9223372036854775807LL} \
"

#undef MD_EXEC_PREFIX
#undef MD_STARTFILE_PREFIX

/* Use the default (for now).  */
#undef STARTFILE_SPEC

/* Use the default (for now).  */
#undef LIB_SPEC

/* This is taken from sol2.h.  */
#undef LINK_SPEC
#define LINK_SPEC "\
%{!nostdlib:%{!r*:%{!e*:-e _start}}} \
%{h*} %{V} %{v:%{!V:-V}} \
%{b} %{Wl,*:%*} \
%{static:-dn -Bstatic} \
%{shared:-G -dy} \
%{symbolic:-Bsymbolic -G -dy} \
%{G:-G} \
%{YP,*} \
%{R*} \
%{Qy:} %{!Qn:-Qy} \
"

/* Unfortunately, svr4.h redefines these so we have to restore them to
   their original values in sparc.h.  */
/* ??? It might be possible to eventually get svr4.h to do the right thing.  */

#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long long int"

#undef SIZE_TYPE
#define SIZE_TYPE "long long unsigned int"

/* ??? This should be 32 bits for v9 but what can we do?  */
#undef WCHAR_TYPE
#define WCHAR_TYPE "short unsigned int"

#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 16

/* ??? Disabled for v9 as the current implementation of the Medium/Anywhere
   code model needs this in the data segment (still true?).  Let's hope the
   assembler is fixed.  */
#undef JUMP_TABLES_IN_TEXT_SECTION

/* System V Release 4 uses DWARF debugging info.
   GDB doesn't support 64 bit stabs yet and the desired debug format is DWARF
   anyway so it is the default.  */

#define DWARF_DEBUGGING_INFO
#define DBX_DEBUGGING_INFO

#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG

/* Define the names of various pseudo-ops used by the Sparc/svr4 assembler.
   ??? If ints are 64 bits then UNALIGNED_INT_ASM_OP (defined elsewhere) is
   misnamed.  These should all refer to explicit sizes (half/word/xword?),
   anything other than short/int/long/etc.  */

#define UNALIGNED_LONGLONG_ASM_OP	".uaxword"

/* DWARF stuff.  */

#define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL)				\
 do {	fprintf ((FILE), "\t%s\t", UNALIGNED_LONGLONG_ASM_OP);		\
	assemble_name (FILE, LABEL);					\
	fprintf (FILE, "\n");						\
  } while (0)

#define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX)				\
  do {									\
    fprintf ((FILE), "\t%s\t", UNALIGNED_LONGLONG_ASM_OP);		\
    output_addr_const ((FILE), (RTX));					\
    fputc ('\n', (FILE));						\
  } while (0)

/* ??? Not sure if this should be 4 or 8 bytes.  4 works for now.  */
#define ASM_OUTPUT_DWARF_REF(FILE,LABEL)				\
 do {	fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP);		\
	assemble_name (FILE, LABEL);					\
	fprintf (FILE, "\n");						\
  } while (0)
