/* Definitions of target machine for GNU compiler.
   MIPS SDE version.
   Copyright (C) 2003, 2004
   Free Software Foundation, Inc.

This file is part of GCC.

GCC 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.

GCC 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 GCC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#define DRIVER_SELF_SPECS						\
  /* Make sure a -mips option is present.  This helps us to pick	\
     the right multilib, and also makes the later specs easier		\
     to write.  */							\
  MIPS_ISA_LEVEL_SPEC,							\
									\
  /* Infer the default float setting from -march.  */			\
  MIPS_ARCH_FLOAT_SPEC,							\
									\
  /* If no ABI option is specified, infer one from the ISA level	\
     or -mgp setting.  */						\
  "%{!mabi=*: %{" MIPS_32BIT_OPTION_SPEC ": -mabi=32;: -mabi=n32}}",	\
									\
  /* Remove a redundant -mfp64 for -mabi=n32; we want the !mfp64	\
     multilibs.  There's no need to check whether the architecture	\
     is 64-bit; cc1 will complain if it isn't.  */			\
  "%{mabi=n32: %<mfp64}",						\
									\
  /* Make sure that an endian option is always present.  This makes	\
     things like LINK_SPEC easier to write.  */				\
  "%{!EB:%{!EL:%(endian_spec)}}",					\
									\
  /* -mcode-xonly is a traditional alias for -mcode-readable=pcrel and	\
     -mno-data-in-code is a traditional alias for -mcode-readable=no.	\
     The latter trumps the former.  */					\
  "%{mno-data-in-code: -mcode-readable=no}",				\
  "%{!mcode-readable=no: %{mcode-xonly: -mcode-readable=pcrel}}",	\
  "%<mno-data-in-code %<mcode-xonly"

/* Use trap rather than break for all but MIPS I ISA.  Force -no-mips16,
   so that MIPS16 assembler code requires an explicit ".set mips16".
   Very little hand-written MIPS16 assembler exists, and some build
   systems expect code to be assembled as non-MIPS16 even if the
   prevailing compiler flags select -mips16.  */
#undef SUBTARGET_ASM_SPEC
#define SUBTARGET_ASM_SPEC "\
%{!mips1:--trap} \
%{fPIC|fpic|fPIE|fpie:%{!mips16*:-KPIC}} \
%{mips16:-no-mips16}"

#undef LINK_SPEC
#define LINK_SPEC "\
%(endian_spec) \
%{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \
%{bestGnum} \
%{shared} %{non_shared} %{call_shared} \
%{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \
%{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \
%{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}"

#undef DEFAULT_SIGNED_CHAR
#define DEFAULT_SIGNED_CHAR 0

/* SDE-MIPS won't ever support SDB or MIPS debugging info.  */
#undef SDB_DEBUGGING_INFO
#undef MIPS_DEBUGGING_INFO

/* Describe how we implement __builtin_eh_return.  */

/* At the moment, nothing appears to use more than 2 EH data registers.
   The chosen registers must not clash with the return register ($2),
   EH_RETURN_STACKADJ ($3), or MIPS_EPILOGUE_TEMP ($5), and they must
   be general MIPS16 registers.  Pick $6 and $7.  */
#undef EH_RETURN_DATA_REGNO
#define EH_RETURN_DATA_REGNO(N) \
  ((N) < 2 ? 7 - (N) : INVALID_REGNUM)

/* Use $5 as a temporary for both MIPS16 and non-MIPS16.  */
#undef MIPS_EPILOGUE_TEMP_REGNUM
#define MIPS_EPILOGUE_TEMP_REGNUM (GP_REG_FIRST + 5)

/* Using long will always be right for size_t and ptrdiff_t, since
   sizeof(long) must equal sizeof(void *), following from the setting
   of the -mlong64 option.  */
#undef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long int"

/* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
#define HANDLE_PRAGMA_PACK_PUSH_POP 1

/* Use standard ELF-style local labels (not '$' as on early Irix).  */
#undef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX "."

/* Use periods rather than dollar signs in special g++ assembler names.  */
#define NO_DOLLAR_IN_LABEL

/* Attach a special .ident directive to the end of the file to identify
   the version of GCC which compiled this code.  */
#undef IDENT_ASM_OP
#define IDENT_ASM_OP "\t.ident\t"

/* Output #ident string into the ELF .comment section, so it doesn't
   form part of the load image, and so that it can be stripped.  */
#undef ASM_OUTPUT_IDENT
#define ASM_OUTPUT_IDENT(STREAM, STRING) \
  fprintf (STREAM, "%s\"%s\"\n", IDENT_ASM_OP, STRING);

/* Currently we don't support 128bit long doubles, so for now we force
   n32 to be 64bit.  */
#undef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE 64

#ifdef IN_LIBGCC2
#undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
#endif

/* This version of _mcount does not pop 2 words from the stack.  */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABELNO)				\
  {									\
    fprintf (FILE, "\t.set\tnoat\n");					\
    /* MIPS16 code passes saved $ra in $v1 instead of $at.  */		\
    fprintf (FILE, "\tmove\t%s,%s\n",					\
	     reg_names[GP_REG_FIRST + (TARGET_MIPS16 ? 3 : 1)],		\
	     reg_names[GP_REG_FIRST + 31]);				\
    fprintf (FILE, "\tjal\t_mcount\n");					\
    fprintf (FILE, "\t.set\tat\n");					\
  }

/* Force all .init and .fini entries to be 32-bit, not mips16, so that
   in a mixed environment they are all the same mode. The crti.asm and
   crtn.asm files will also be compiled as 32-bit due to the
   -no-mips16 flag in SUBTARGET_ASM_SPEC above. */
#undef CRT_CALL_STATIC_FUNCTION
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
   asm (SECTION_OP "\n\
	.set push\n\
	.set nomips16\n\
	jal " USER_LABEL_PREFIX #FUNC "\n\
	.set pop\n\
	" TEXT_SECTION_ASM_OP);