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

   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006,

   2007 Free Software Foundation, Inc.

   Contributed by Eddie C. Dost (ecd@skynet.be)

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/>.  */

#define TARGET_OS_CPP_BUILTINS()                \

  do                                            \

    {                                           \

      builtin_define_std ("unix");              \

      builtin_define_std ("linux");             \

      builtin_define ("__gnu_linux__");         \

      builtin_assert ("system=linux");          \

      builtin_assert ("system=unix");           \

      builtin_assert ("system=posix");          \

      if (TARGET_LONG_DOUBLE_128)               \

        builtin_define ("__LONG_DOUBLE_128__"); \

    }                                           \

  while (0)

/* Don't assume anything about the header files.  */

#define NO_IMPLICIT_EXTERN_C

#undef MD_EXEC_PREFIX

#undef MD_STARTFILE_PREFIX

/* Provide a STARTFILE_SPEC appropriate for GNU/Linux.  Here we add

   the GNU/Linux magical crtbegin.o file (see crtstuff.c) which

   provides part of the support for getting C++ file-scope static

   object constructed before entering `main'.  */

#undef  STARTFILE_SPEC

#if defined HAVE_LD_PIE

#define STARTFILE_SPEC \

  "%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\

   crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"

#else

#define STARTFILE_SPEC \

  "%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\

   crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"

#endif

/* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on

   the GNU/Linux magical crtend.o file (see crtstuff.c) which

   provides part of the support for getting C++ file-scope static

   object constructed before entering `main', followed by a normal

   GNU/Linux "finalizer" file, `crtn.o'.  */

#undef  ENDFILE_SPEC

#define ENDFILE_SPEC \

  "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \

   %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"

/* This is for -profile to use -lc_p instead of -lc.  */

#undef  CC1_SPEC

#define CC1_SPEC "%{profile:-p} \

%{sun4:} %{target:} \

%{mcypress:-mcpu=cypress} \

%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \

%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \

"

/* The GNU C++ standard library requires that these macros be defined.  */

#undef CPLUSPLUS_CPP_SPEC

#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"

#undef TARGET_VERSION

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

#undef SIZE_TYPE

#define SIZE_TYPE "unsigned int"

#undef PTRDIFF_TYPE

#define PTRDIFF_TYPE "int"

#undef WCHAR_TYPE

#define WCHAR_TYPE "int"

#undef WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE 32

#undef CPP_SUBTARGET_SPEC

#define CPP_SUBTARGET_SPEC \

"%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"

#undef LIB_SPEC

#define LIB_SPEC \

  "%{pthread:-lpthread} \

   %{shared:-lc} \

   %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"

/* Provide a LINK_SPEC appropriate for GNU/Linux.  Here we provide support

   for the special GCC options -static and -shared, which allow us to

   link things in one of these three modes by applying the appropriate

   combinations of options at link-time. We like to support here for

   as many of the other GNU linker options as possible. But I don't

   have the time to search for those flags. I am sure how to add

   support for -soname shared_object_name. H.J.

   I took out %{v:%{!V:-V}}. It is too much :-(. They can use

   -Wl,-V.

   When the -shared link option is used a final link is not being

   done.  */

/* If ELF is the default format, we should not use /lib/elf.  */

#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"

#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"

#if UCLIBC_DEFAULT

#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"

#else

#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"

#endif

#define LINUX_DYNAMIC_LINKER \

  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)

#undef  LINK_SPEC

#define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \

  %{!mno-relax:%{!r:-relax}} \

  %{!shared: \

    %{!ibcs: \

      %{!static: \

        %{rdynamic:-export-dynamic} \

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

        %{static:-static}}}"

/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).

   It's safe to pass -s always, even if -g is not used.  */

#undef ASM_SPEC

#define ASM_SPEC \

  "%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \

   %{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu) %(asm_relax)"

/* Same as sparc.h */

#undef DBX_REGISTER_NUMBER

#define DBX_REGISTER_NUMBER(REGNO) (REGNO)

#undef ASM_OUTPUT_ALIGNED_LOCAL

#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \

do {                                                                    \

  fputs ("\t.local\t", (FILE));         \

  assemble_name ((FILE), (NAME));                                       \

  putc ('\n', (FILE));                                                  \

  ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN);                  \

} while (0)

#undef COMMON_ASM_OP

#define COMMON_ASM_OP "\t.common\t"

#undef  LOCAL_LABEL_PREFIX

#define LOCAL_LABEL_PREFIX  "."

/* This is how to store into the string LABEL

   the symbol_ref name of an internal numbered label where

   PREFIX is the class of label and NUM is the number within the class.

   This is suitable for output with `assemble_name'.  */

#undef  ASM_GENERATE_INTERNAL_LABEL

#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \

  sprintf (LABEL, "*.L%s%ld", PREFIX, (long)(NUM))

/* Define for support of TFmode long double.

   SPARC ABI says that long double is 4 words.  */

#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)

/* Define this to set long double type size to use in libgcc2.c, which can

   not depend on target_flags.  */

#ifdef __LONG_DOUBLE_128__

#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128

#else

#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64

#endif

#undef DITF_CONVERSION_LIBFUNCS

#define DITF_CONVERSION_LIBFUNCS 1

#if defined(HAVE_LD_EH_FRAME_HDR)

#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "

#endif

#ifdef HAVE_AS_TLS

#undef TARGET_SUN_TLS

#undef TARGET_GNU_TLS

#define TARGET_SUN_TLS 0

#define TARGET_GNU_TLS 1

#endif

/* Don't be different from other Linux platforms in this regard.  */

#define HANDLE_PRAGMA_PACK_PUSH_POP

/* We use GNU ld so undefine this so that attribute((init_priority)) works.  */

#undef CTORS_SECTION_ASM_OP

#undef DTORS_SECTION_ASM_OP

/* Determine whether the entire c99 runtime is present in the

   runtime library.  */

#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)

#define TARGET_POSIX_IO

#undef LINK_GCC_C_SEQUENCE_SPEC

#define LINK_GCC_C_SEQUENCE_SPEC \

  "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"

/* Use --as-needed -lgcc_s for eh support.  */

#ifdef HAVE_LD_AS_NEEDED

#define USE_LD_AS_NEEDED 1

#endif

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

/* Linux currently uses RMO in uniprocessor mode, which is equivalent to

   TMO, and TMO in multiprocessor mode.  But they reserve the right to

   change their minds.  */

#undef SPARC_RELAXED_ORDERING

#define SPARC_RELAXED_ORDERING true

#undef NEED_INDICATE_EXEC_STACK

#define NEED_INDICATE_EXEC_STACK 1

#ifdef TARGET_LIBC_PROVIDES_SSP

/* sparc glibc provides __stack_chk_guard in [%g7 + 0x14].  */

#define TARGET_THREAD_SSP_OFFSET        0x14

#endif

/* Define if long doubles should be mangled as 'g'.  */

#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING