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/* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF.

   Copyright 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006, 2007

   Free Software Foundation, Inc.

   Contributed by David S. Miller (davem@caip.rutgers.edu)

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 ("_LONGLONG");                     \

      builtin_define ("__gnu_linux__");                 \

      builtin_assert ("system=linux");                  \

      builtin_assert ("system=unix");                   \

      builtin_assert ("system=posix");                  \

      if (TARGET_ARCH32 && 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

#if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \

    || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc \

    || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 \

    || TARGET_CPU_DEFAULT == TARGET_CPU_niagara

/* A 64 bit v9 compiler with stack-bias,

   in a Medium/Low code model environment.  */

#undef TARGET_DEFAULT

#define TARGET_DEFAULT \

  (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \

   + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)

#endif

#undef ASM_CPU_DEFAULT_SPEC

#define ASM_CPU_DEFAULT_SPEC "-Av9a"

/* 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

#ifdef 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;:crtbeginS.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;:crtbeginS.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 \

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

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

/* 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, " (sparc64 GNU/Linux with ELF)");

/* The default code model.  */

#undef SPARC_DEFAULT_CMODEL

#define SPARC_DEFAULT_CMODEL CM_MEDLOW

#undef WCHAR_TYPE

#define WCHAR_TYPE "int"

#undef WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE 32

/* Define for support of TFmode long double.

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

#undef LONG_DOUBLE_TYPE_SIZE

#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.  */

#if defined(__arch64__) || defined(__LONG_DOUBLE_128__)

#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128

#else

#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64

#endif

#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_LINKER32 "/lib/ld-linux.so.2"

#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux.so.2"

#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"

#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-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_LINKER32 \

  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)

#define LINUX_DYNAMIC_LINKER64 \

  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)

#ifdef SPARC_BI_ARCH

#undef SUBTARGET_EXTRA_SPECS

#define SUBTARGET_EXTRA_SPECS \

  { "link_arch32",       LINK_ARCH32_SPEC },              \

  { "link_arch64",       LINK_ARCH64_SPEC },              \

  { "link_arch_default", LINK_ARCH_DEFAULT_SPEC },        \

  { "link_arch",         LINK_ARCH_SPEC },

#define LINK_ARCH32_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \

  %{!shared: \

    %{!ibcs: \

      %{!static: \

        %{rdynamic:-export-dynamic} \

        %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \

        %{static:-static}}} \

"

#define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \

  %{!shared: \

    %{!ibcs: \

      %{!static: \

        %{rdynamic:-export-dynamic} \

        %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}} \

        %{static:-static}}} \

"

#define LINK_ARCH_SPEC "\

%{m32:%(link_arch32)} \

%{m64:%(link_arch64)} \

%{!m32:%{!m64:%(link_arch_default)}} \

"

#define LINK_ARCH_DEFAULT_SPEC \

(DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC)

#undef  LINK_SPEC

#define LINK_SPEC "\

%(link_arch) \

%{mlittle-endian:-EL} \

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

"

#undef  CC1_SPEC

#if DEFAULT_ARCH32_P

#define CC1_SPEC "\

%{sun4:} %{target:} \

%{mcypress:-mcpu=cypress} \

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

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

%{m32:%{m64:%emay not use both -m32 and -m64}} \

%{m64:-mptr64 -mstack-bias -mlong-double-128 \

  %{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:-mcpu=ultrasparc}}}}}}} \

  %{!mno-vis:%{!mcpu=v9:-mvis}}} \

"

#else

#define CC1_SPEC "\

%{sun4:} %{target:} \

%{mcypress:-mcpu=cypress} \

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

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

%{m32:%{m64:%emay not use both -m32 and -m64}} \

%{m32:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \

  %{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:-mcpu=cypress}}}}}}}} \

%{!m32:%{!mcpu*:-mcpu=ultrasparc}} \

%{!mno-vis:%{!m32:%{!mcpu=v9:-mvis}}} \

"

#endif

/* Support for a compile-time default CPU, et cetera.  The rules are:

   --with-cpu is ignored if -mcpu is specified.

   --with-tune is ignored if -mtune is specified.

   --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu

     are specified.

   In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)}

   here, otherwise say -mcpu=v7 would be passed even when -m64.

   CC1_SPEC above takes care of this instead.  */

#undef OPTION_DEFAULT_SPECS

#if DEFAULT_ARCH32_P

#define OPTION_DEFAULT_SPECS \

  {"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \

  {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \

  {"float", "%{!msoft-float:%{!mhard-float:%{!fpu:%{!no-fpu:-m%(VALUE)-float}}}}" }

#else

#define OPTION_DEFAULT_SPECS \

  {"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \

  {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \

  {"float", "%{!msoft-float:%{!mhard-float:%{!fpu:%{!no-fpu:-m%(VALUE)-float}}}}" }

#endif

#if DEFAULT_ARCH32_P

#define MULTILIB_DEFAULTS { "m32" }

#else

#define MULTILIB_DEFAULTS { "m64" }

#endif

#else /* !SPARC_BI_ARCH */

#undef LINK_SPEC

#define LINK_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \

  %{!shared: \

    %{!ibcs: \

      %{!static: \

        %{rdynamic:-export-dynamic} \

        %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}} \

        %{static:-static}}} \

%{mlittle-endian:-EL} \

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

"

#endif /* !SPARC_BI_ARCH */

/* 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} \

%{mlittle-endian:-EL} \

%(asm_cpu) %(asm_arch) %(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))

/* DWARF bits.  */

/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.

   Obviously the Dwarf2 folks haven't tried to actually build systems

   with their spec.  On a 64-bit system, only 64-bit relocs become

   RELATIVE relocations.  */

/* #define DWARF_OFFSET_SIZE PTR_SIZE */

#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],

   sparc64 glibc provides it at [%g7 + 0x28].  */

#define TARGET_THREAD_SSP_OFFSET        (TARGET_ARCH64 ? 0x28 : 0x14)

#endif

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

#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING