Subversion Repositories openrisc_2011-10-31

/* Definitions for MIPS running Linux-based GNU systems with ELF format.

   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,

   2007, 2008 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 3, 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 COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#undef WCHAR_TYPE

#define WCHAR_TYPE "int"

#undef WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE 32

#undef ASM_DECLARE_OBJECT_NAME

#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name

#undef TARGET_VERSION

#if TARGET_ENDIAN_DEFAULT == 0

#define TARGET_VERSION fprintf (stderr, " (MIPSel GNU/Linux with ELF)");

#else

#define TARGET_VERSION fprintf (stderr, " (MIPS GNU/Linux with ELF)");

#endif

#undef MD_EXEC_PREFIX

#undef MD_STARTFILE_PREFIX

/* If we don't set MASK_ABICALLS, we can't default to PIC.  */

#undef TARGET_DEFAULT

#define TARGET_DEFAULT MASK_ABICALLS

#define TARGET_OS_CPP_BUILTINS()                                \

  do {                                                          \

    LINUX_TARGET_OS_CPP_BUILTINS();                             \

    /* The GNU C++ standard library requires this.  */          \

    if (c_dialect_cxx ())                                       \

      builtin_define ("_GNU_SOURCE");                           \

  } while (0)

#undef SUBTARGET_CPP_SPEC

#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"

/* A standard GNU/Linux mapping.  On most targets, it is included in

   CC1_SPEC itself by config/linux.h, but mips.h overrides CC1_SPEC

   and provides this hook instead.  */

#undef SUBTARGET_CC1_SPEC

#define SUBTARGET_CC1_SPEC "%{profile:-p}"

/* From iris5.h */

/* -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

#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"

/* Borrowed from sparc/linux.h */

#undef LINK_SPEC

#define LINK_SPEC \

 "%(endian_spec) \

  %{shared:-shared} \

  %{!shared: \

    %{!ibcs: \

      %{!static: \

        %{rdynamic:-export-dynamic} \

        %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \

        %{static:-static}}}"

#undef SUBTARGET_ASM_SPEC

#define SUBTARGET_ASM_SPEC \

  "%{!mno-abicalls:%{mplt:-call_nonpic;:-KPIC}}"

/* The MIPS assembler has different syntax for .set. We set it to

   .dummy to trap any errors.  */

#undef SET_ASM_OP

#define SET_ASM_OP "\t.dummy\t"

#undef ASM_OUTPUT_DEF

#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                              \

 do {                                                                   \

        fputc ( '\t', FILE);                                            \

        assemble_name (FILE, LABEL1);                                   \

        fputs ( " = ", FILE);                                           \

        assemble_name (FILE, LABEL2);                                   \

        fputc ( '\n', FILE);                                            \

 } while (0)

/* The glibc _mcount stub will save $v0 for us.  Don't mess with saving

   it, since ASM_OUTPUT_REG_PUSH/ASM_OUTPUT_REG_POP do not work in the

   presence of $gp-relative calls.  */

#undef ASM_OUTPUT_REG_PUSH

#undef ASM_OUTPUT_REG_POP

#undef LIB_SPEC

#define LIB_SPEC "\

%{pthread:-lpthread} \

%{shared:-lc} \

%{!shared: \

  %{profile:-lc_p} %{!profile:-lc}}"

#define MD_UNWIND_SUPPORT "config/mips/linux-unwind.h"

#ifdef HAVE_AS_NO_SHARED

/* Default to -mno-shared for non-PIC.  */

# define NO_SHARED_SPECS \

  "%{mshared|mno-shared|fpic|fPIC|fpie|fPIE:;:-mno-shared}"

#else

# define NO_SHARED_SPECS ""

#endif

/* -march=native handling only makes sense with compiler running on

   a MIPS chip.  */

#if defined(__mips__)

extern const char *host_detect_local_cpu (int argc, const char **argv);

# define EXTRA_SPEC_FUNCTIONS \

  { "local_cpu_detect", host_detect_local_cpu },

# define MARCH_MTUNE_NATIVE_SPECS                               \

  " %{march=native:%<march=native %:local_cpu_detect(arch)}"    \

  " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"

#else

# define MARCH_MTUNE_NATIVE_SPECS ""

#endif

#define LINUX_DRIVER_SELF_SPECS \

  NO_SHARED_SPECS                                                       \

  MARCH_MTUNE_NATIVE_SPECS,                                             \

  /* -mplt has no effect without -mno-shared.  Simplify later           \

     specs handling by removing a redundant option.  */                 \

  "%{!mno-shared:%<mplt}",                                              \

  /* -mplt likewise has no effect for -mabi=64 without -msym32.  */     \

  "%{mabi=64:%{!msym32:%<mplt}}"

#undef DRIVER_SELF_SPECS

#define DRIVER_SELF_SPECS \

  BASE_DRIVER_SELF_SPECS, \

  LINUX_DRIVER_SELF_SPECS