/* Definitions for MIPS systems running BSD as target machine for GNU compiler.
   Copyright (C) 1993, 1995 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.  */

/* We settle for little endian for now */

#define TARGET_ENDIAN_DEFAULT 0

#ifndef CROSS_COMPILE
/* Look for the G++ include files in the system-defined place.  */

#undef GPLUSPLUS_INCLUDE_DIR
#define GPLUSPLUS_INCLUDE_DIR "/usr/include/g++"

/* Under OpenBSD, the normal location of the various *crt*.o files is the
   /usr/lib directory.  */

#undef STANDARD_STARTFILE_PREFIX
#define STANDARD_STARTFILE_PREFIX "/usr/lib/"
#endif

/* Provide a LINK_SPEC appropriate for OpenBSD.  Here we provide support
   for the special GCC options -static, -assert, and -nostdlib.  */

#undef LINK_SPEC
#define LINK_SPEC \
  "%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \
   %{bestGnum} %{shared} %{non_shared} \
   %{call_shared} %{no_archive} %{exact_version} \
   %{!shared: %{!non_shared: %{!call_shared: -non_shared}}} \
   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.so} \
   %{!nostdlib:%{!r*:%{!e*:-e __start}}} -dc -dp \
   %{static:-Bstatic} %{!static:-Bdynamic} %{assert*}"

/* We have atexit(3).  */

#define HAVE_ATEXIT

/* Implicit library calls should use memcpy, not bcopy, etc.  */

#define TARGET_MEM_FUNCTIONS

/* Define mips-specific OpenBSD predefines... */
#ifndef CPP_PREDEFINES
#define CPP_PREDEFINES "-D__ANSI_COMPAT \
-DMIPSEL -DR3000 -DSYSTYPE_BSD -D_SYSTYPE_BSD -D__OpenBSD__ -Dmips \
-D__NO_LEADING_UNDERSCORES__ -D__GP_SUPPORT__ \
-Dunix -D_R3000 \
-Asystem(unix) -Asystem(OpenBSD) -Amachine(mips)"
#endif

#ifndef CC1_SPEC
#define CC1_SPEC "\
%{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \
%{mips1:-mfp32 -mgp32}%{mips2:-mfp32 -mgp32}\
%{mips3:%{!msingle-float:%{!m4650:-mfp64}} -mgp64} \
%{mips4:%{!msingle-float:%{!m4650:-mfp64}} -mgp64} \
%{mfp64:%{msingle-float:%emay not use both -mfp64 and -msingle-float}} \
%{mfp64:%{m4650:%emay not use both -mfp64 and -m4650}} \
%{m4650:-mcpu=r4650} \
%{G*} %{EB:-meb} %{EL:-mel} %{EB:%{EL:%emay not use both -EB and -EL}} \
%{pic-none:   -mno-half-pic} \
%{pic-lib:    -mhalf-pic} \
%{pic-extern: -mhalf-pic} \
%{pic-calls:  -mhalf-pic} \
%{save-temps: } \
%{!mno-abicalls:    -mabicalls}"
#endif

#define SUBTARGET_ASM_SPEC "%{fPIC:-KPIC}"

#ifndef CPP_SPEC
#define CPP_SPEC "\
%{posix:-D_POSIX_SOURCE} \
%{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
%{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
%{mips3:-U__mips -D__mips=3 -D__mips64} \
%{mgp32:-U__mips64} %{mgp64:-D__mips64}"
#endif

#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"

#undef LIB_SPEC
#define LIB_SPEC "%{p:-lprof1} %{pg:-lprof1} -lc crtn.o%s"
#define STARTFILE_SPEC \
   "%{!shared:%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}}"

#ifndef MACHINE_TYPE
#define MACHINE_TYPE "OpenBSD/mips"
#endif

#define TARGET_DEFAULT MASK_GAS
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG

#define LOCAL_LABEL_PREFIX	"."

/* -G is incompatible with -KPIC which is the default, so only allow objects
   in the small data section if the user explicitly asks for it.  */
#undef MIPS_DEFAULT_GVALUE
#define MIPS_DEFAULT_GVALUE 0

#include "mips/mips.h"

/*
 * Some imports from svr4.h in support of shared libraries.
 * Currently, we need the DECLARE_OBJECT_SIZE stuff.
 */

/* Define the strings used for the special svr4 .type and .size directives.
   These strings generally do not vary from one system running svr4 to
   another, but if a given system (e.g. m88k running svr) needs to use
   different pseudo-op names for these, they may be overridden in the
   file which includes this one.  */

#undef TYPE_ASM_OP
#undef SIZE_ASM_OP
#undef WEAK_ASM_OP
#define TYPE_ASM_OP	".type"
#define SIZE_ASM_OP	".size"
#define WEAK_ASM_OP	".weak"

/* The following macro defines the format used to output the second
   operand of the .type assembler directive.  Different svr4 assemblers
   expect various different forms for this operand.  The one given here
   is just a default.  You may need to override it in your machine-
   specific tm.h file (depending upon the particulars of your assembler).  */

#undef TYPE_OPERAND_FMT
#define TYPE_OPERAND_FMT	"@%s"

/* Write the extra assembler code needed to declare a function's result.
   Most svr4 assemblers don't require any special declaration of the
   result value, but there are exceptions.  */

#ifndef ASM_DECLARE_RESULT
#define ASM_DECLARE_RESULT(FILE, RESULT)
#endif

/* These macros generate the special .type and .size directives which
   are used to set the corresponding fields of the linker symbol table
   entries in an ELF object file under SVR4.  These macros also output
   the starting labels for the relevant functions/objects.  */

/* Write the extra assembler code needed to declare a function properly.
   Some svr4 assemblers need to also have something extra said about the
   function's return value.  We allow for that here.  */

#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)			\
  do {									\
    extern FILE *asm_out_text_file;					\
									\
    if (TARGET_GP_OPT)							\
      {									\
	int align;							\
	STREAM = asm_out_text_file;					\
	/* Output ALIGN again to the new stream. XXX  */		\
	align = floor_log2 (FUNCTION_BOUNDARY / BITS_PER_UNIT);		\
	if (align > 0)							\
	  {								\
	    if (output_bytecode)					\
	      BC_OUTPUT_ALIGN (STREAM, align);				\
	    else							\
	      ASM_OUTPUT_ALIGN (STREAM, align);				\
	  }								\
      }									\
    fprintf (STREAM, "\t%s\t ", TYPE_ASM_OP);				\
    assemble_name (STREAM, NAME);					\
    putc (',', STREAM);							\
    fprintf (STREAM, TYPE_OPERAND_FMT, "function");			\
    putc ('\n', STREAM);						\
    ASM_DECLARE_RESULT (STREAM, DECL_RESULT (DECL));			\
    HALF_PIC_DECLARE (NAME);						\
  } while (0)

/* Assemble generic sections. */
/* Write the extra assembler code needed to declare an object properly.  */

#undef ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)			\
  do {									\
    fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);				\
    assemble_name (FILE, NAME);						\
    putc (',', FILE);							\
    fprintf (FILE, TYPE_OPERAND_FMT, "object");				\
    putc ('\n', FILE);							\
    size_directive_output = 0;						\
    if (!flag_inhibit_size_directive && DECL_SIZE (DECL))		\
      {									\
	size_directive_output = 1;					\
	fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);				\
	assemble_name (FILE, NAME);					\
	fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL)));	\
      }									\
    ASM_OUTPUT_LABEL(FILE, NAME);					\
  } while (0)

/* Output the size directive for a decl in rest_of_decl_compilation
   in the case where we did not do so before the initializer.
   Once we find the error_mark_node, we know that the value of
   size_directive_output was set
   by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */

#undef ASM_FINISH_DECLARE_OBJECT
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)	 \
do {									 \
     char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);			 \
     if (!flag_inhibit_size_directive && DECL_SIZE (DECL)		 \
         && ! AT_END && TOP_LEVEL					 \
	 && DECL_INITIAL (DECL) == error_mark_node			 \
	 && !size_directive_output)					 \
       {								 \
	 size_directive_output = 1;					 \
	 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);			 \
	 assemble_name (FILE, name);					 \
	 fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
       }								 \
   } while (0)

/* This is how to declare the size of a function.  */

#undef ASM_DECLARE_FUNCTION_SIZE
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)			\
  do {									\
    if (!flag_inhibit_size_directive)					\
      {									\
        char label[256];						\
	static int labelno;						\
	labelno++;							\
	ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno);		\
	ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno);		\
	fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);				\
	assemble_name (FILE, (FNAME));					\
        fprintf (FILE, ",");						\
	assemble_name (FILE, label);					\
        fprintf (FILE, "-");						\
	assemble_name (FILE, (FNAME));					\
	putc ('\n', FILE);						\
      }									\
  } while (0)

/* Since gas and gld are standard on OpenBSD, we don't need these */
#undef ASM_FINAL_SPEC
#undef STARTFILE_SPEC

