[thirdparty/gcc.git] / gcc / config / sparc / linux64.h

/* 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 \
    || TARGET_CPU_DEFAULT == TARGET_CPU_niagara2
/* 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
\f
#ifdef HAVE_AS_TLS
#undef TARGET_SUN_TLS
#undef TARGET_GNU_TLS
#define TARGET_SUN_TLS 0
#define TARGET_GNU_TLS 1
#endif
\f
/* 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)

/* Whether we have sincos that follows the GNU extension.  */
#define TARGET_HAS_SINCOS (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
Commit	Line	Data
	1	/* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF.
	2	Copyright 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006, 2007
	3	Free Software Foundation, Inc.
	4	Contributed by David S. Miller (davem@caip.rutgers.edu)
	5
	6	This file is part of GCC.
	7
	8	GCC is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 3, or (at your option)
	11	any later version.
	12
	13	GCC is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with GCC; see the file COPYING3. If not see
	20	<http://www.gnu.org/licenses/>. */
	21
	22	#define TARGET_OS_CPP_BUILTINS() \
	23	do \
	24	{ \
	25	builtin_define_std ("unix"); \
	26	builtin_define_std ("linux"); \
	27	builtin_define ("_LONGLONG"); \
	28	builtin_define ("__gnu_linux__"); \
	29	builtin_assert ("system=linux"); \
	30	builtin_assert ("system=unix"); \
	31	builtin_assert ("system=posix"); \
	32	if (TARGET_ARCH32 && TARGET_LONG_DOUBLE_128) \
	33	builtin_define ("__LONG_DOUBLE_128__"); \
	34	} \
	35	while (0)
	36
	37	/* Don't assume anything about the header files. */
	38	#define NO_IMPLICIT_EXTERN_C
	39
	40	#undef MD_EXEC_PREFIX
	41	#undef MD_STARTFILE_PREFIX
	42
	43	#if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
	44	\|\| TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc \
	45	\|\| TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 \
	46	\|\| TARGET_CPU_DEFAULT == TARGET_CPU_niagara \
	47	\|\| TARGET_CPU_DEFAULT == TARGET_CPU_niagara2
	48	/* A 64 bit v9 compiler with stack-bias,
	49	in a Medium/Low code model environment. */
	50
	51	#undef TARGET_DEFAULT
	52	#define TARGET_DEFAULT \
	53	(MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
	54	+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
	55	#endif
	56
	57	#undef ASM_CPU_DEFAULT_SPEC
	58	#define ASM_CPU_DEFAULT_SPEC "-Av9a"
	59
	60	/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
	61	the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
	62	provides part of the support for getting C++ file-scope static
	63	object constructed before entering `main'. */
	64
	65	#undef STARTFILE_SPEC
	66
	67	#ifdef HAVE_LD_PIE
	68	#define STARTFILE_SPEC \
	69	"%{!shared:%{pg\|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\
	70	crti.o%s %{static:crtbeginT.o%s;shared\|pie:crtbeginS.o%s;:crtbeginS.o%s}"
	71	#else
	72	#define STARTFILE_SPEC \
	73	"%{!shared:%{pg\|p:gcrt1.o%s;:crt1.o%s}}\
	74	crti.o%s %{static:crtbeginT.o%s;shared\|pie:crtbeginS.o%s;:crtbeginS.o%s}"
	75	#endif
	76
	77	/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
	78	the GNU/Linux magical crtend.o file (see crtstuff.c) which
	79	provides part of the support for getting C++ file-scope static
	80	object constructed before entering `main', followed by a normal
	81	GNU/Linux "finalizer" file, `crtn.o'. */
	82
	83	#undef ENDFILE_SPEC
	84
	85	#define ENDFILE_SPEC \
	86	"%{shared\|pie:crtendS.o%s;:crtend.o%s} crtn.o%s\
	87	%{ffast-math\|funsafe-math-optimizations:crtfastmath.o%s}"
	88
	89	/* The GNU C++ standard library requires that these macros be defined. */
	90	#undef CPLUSPLUS_CPP_SPEC
	91	#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
	92
	93	#undef TARGET_VERSION
	94	#define TARGET_VERSION fprintf (stderr, " (sparc64 GNU/Linux with ELF)");
	95
	96	/* The default code model. */
	97	#undef SPARC_DEFAULT_CMODEL
	98	#define SPARC_DEFAULT_CMODEL CM_MEDLOW
	99
	100	#undef WCHAR_TYPE
	101	#define WCHAR_TYPE "int"
	102
	103	#undef WCHAR_TYPE_SIZE
	104	#define WCHAR_TYPE_SIZE 32
	105
	106	/* Define for support of TFmode long double.
	107	SPARC ABI says that long double is 4 words. */
	108	#undef LONG_DOUBLE_TYPE_SIZE
	109	#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
	110
	111	/* Define this to set long double type size to use in libgcc2.c, which can
	112	not depend on target_flags. */
	113	#if defined(__arch64__) \|\| defined(__LONG_DOUBLE_128__)
	114	#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
	115	#else
	116	#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
	117	#endif
	118
	119	#undef CPP_SUBTARGET_SPEC
	120	#define CPP_SUBTARGET_SPEC "\
	121	%{posix:-D_POSIX_SOURCE} \
	122	%{pthread:-D_REENTRANT} \
	123	"
	124
	125	#undef LIB_SPEC
	126	#define LIB_SPEC \
	127	"%{pthread:-lpthread} \
	128	%{shared:-lc} \
	129	%{!shared: %{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
	130
	131	/* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support
	132	for the special GCC options -static and -shared, which allow us to
	133	link things in one of these three modes by applying the appropriate
	134	combinations of options at link-time. We like to support here for
	135	as many of the other GNU linker options as possible. But I don't
	136	have the time to search for those flags. I am sure how to add
	137	support for -soname shared_object_name. H.J.
	138
	139	I took out %{v:%{!V:-V}}. It is too much :-(. They can use
	140	-Wl,-V.
	141
	142	When the -shared link option is used a final link is not being
	143	done. */
	144
	145	/* If ELF is the default format, we should not use /lib/elf. */
	146
	147	#define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
	148	#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux.so.2"
	149	#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
	150	#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
	151	#if UCLIBC_DEFAULT
	152	#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
	153	#else
	154	#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
	155	#endif
	156	#define LINUX_DYNAMIC_LINKER32 \
	157	CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
	158	#define LINUX_DYNAMIC_LINKER64 \
	159	CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
	160
	161	#ifdef SPARC_BI_ARCH
	162
	163	#undef SUBTARGET_EXTRA_SPECS
	164	#define SUBTARGET_EXTRA_SPECS \
	165	{ "link_arch32", LINK_ARCH32_SPEC }, \
	166	{ "link_arch64", LINK_ARCH64_SPEC }, \
	167	{ "link_arch_default", LINK_ARCH_DEFAULT_SPEC }, \
	168	{ "link_arch", LINK_ARCH_SPEC },
	169
	170	#define LINK_ARCH32_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
	171	%{!shared: \
	172	%{!ibcs: \
	173	%{!static: \
	174	%{rdynamic:-export-dynamic} \
	175	%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \
	176	%{static:-static}}} \
	177	"
	178
	179	#define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \
	180	%{!shared: \
	181	%{!ibcs: \
	182	%{!static: \
	183	%{rdynamic:-export-dynamic} \
	184	%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}} \
	185	%{static:-static}}} \
	186	"
	187
	188	#define LINK_ARCH_SPEC "\
	189	%{m32:%(link_arch32)} \
	190	%{m64:%(link_arch64)} \
	191	%{!m32:%{!m64:%(link_arch_default)}} \
	192	"
	193
	194	#define LINK_ARCH_DEFAULT_SPEC \
	195	(DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC)
	196
	197	#undef LINK_SPEC
	198	#define LINK_SPEC "\
	199	%(link_arch) \
	200	%{mlittle-endian:-EL} \
	201	%{!mno-relax:%{!r:-relax}} \
	202	"
	203
	204	#undef CC1_SPEC
	205	#if DEFAULT_ARCH32_P
	206	#define CC1_SPEC "\
	207	%{sun4:} %{target:} \
	208	%{mcypress:-mcpu=cypress} \
	209	%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
	210	%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
	211	%{m32:%{m64:%emay not use both -m32 and -m64}} \
	212	%{m64:-mptr64 -mstack-bias -mlong-double-128 \
	213	%{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:-mcpu=ultrasparc}}}}}}} \
	214	%{!mno-vis:%{!mcpu=v9:-mvis}}} \
	215	"
	216	#else
	217	#define CC1_SPEC "\
	218	%{sun4:} %{target:} \
	219	%{mcypress:-mcpu=cypress} \
	220	%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
	221	%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
	222	%{m32:%{m64:%emay not use both -m32 and -m64}} \
	223	%{m32:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \
	224	%{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:-mcpu=cypress}}}}}}}} \
	225	%{!m32:%{!mcpu*:-mcpu=ultrasparc}} \
	226	%{!mno-vis:%{!m32:%{!mcpu=v9:-mvis}}} \
	227	"
	228	#endif
	229
	230	/* Support for a compile-time default CPU, et cetera. The rules are:
	231	--with-cpu is ignored if -mcpu is specified.
	232	--with-tune is ignored if -mtune is specified.
	233	--with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu
	234	are specified.
	235	In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)}
	236	here, otherwise say -mcpu=v7 would be passed even when -m64.
	237	CC1_SPEC above takes care of this instead. */
	238	#undef OPTION_DEFAULT_SPECS
	239	#if DEFAULT_ARCH32_P
	240	#define OPTION_DEFAULT_SPECS \
	241	{"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
	242	{"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
	243	{"float", "%{!msoft-float:%{!mhard-float:%{!fpu:%{!no-fpu:-m%(VALUE)-float}}}}" }
	244	#else
	245	#define OPTION_DEFAULT_SPECS \
	246	{"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
	247	{"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
	248	{"float", "%{!msoft-float:%{!mhard-float:%{!fpu:%{!no-fpu:-m%(VALUE)-float}}}}" }
	249	#endif
	250
	251	#if DEFAULT_ARCH32_P
	252	#define MULTILIB_DEFAULTS { "m32" }
	253	#else
	254	#define MULTILIB_DEFAULTS { "m64" }
	255	#endif
	256
	257	#else /* !SPARC_BI_ARCH */
	258
	259	#undef LINK_SPEC
	260	#define LINK_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \
	261	%{!shared: \
	262	%{!ibcs: \
	263	%{!static: \
	264	%{rdynamic:-export-dynamic} \
	265	%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}} \
	266	%{static:-static}}} \
	267	%{mlittle-endian:-EL} \
	268	%{!mno-relax:%{!r:-relax}} \
	269	"
	270
	271	#endif /* !SPARC_BI_ARCH */
	272
	273	/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
	274	It's safe to pass -s always, even if -g is not used. */
	275	#undef ASM_SPEC
	276	#define ASM_SPEC "\
	277	%{V} \
	278	%{v:%{!V:-V}} \
	279	%{!Qn:-Qy} \
	280	%{n} \
	281	%{T} \
	282	%{Ym,*} \
	283	%{Wa,:%} \
	284	-s %{fpic\|fPIC\|fpie\|fPIE:-K PIC} \
	285	%{mlittle-endian:-EL} \
	286	%(asm_cpu) %(asm_arch) %(asm_relax)"
	287
	288	/* Same as sparc.h */
	289	#undef DBX_REGISTER_NUMBER
	290	#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
	291
	292	#undef ASM_OUTPUT_ALIGNED_LOCAL
	293	#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
	294	do { \
	295	fputs ("\t.local\t", (FILE)); \
	296	assemble_name ((FILE), (NAME)); \
	297	putc ('\n', (FILE)); \
	298	ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
	299	} while (0)
	300
	301	#undef COMMON_ASM_OP
	302	#define COMMON_ASM_OP "\t.common\t"
	303
	304	#undef LOCAL_LABEL_PREFIX
	305	#define LOCAL_LABEL_PREFIX "."
	306
	307	/* This is how to store into the string LABEL
	308	the symbol_ref name of an internal numbered label where
	309	PREFIX is the class of label and NUM is the number within the class.
	310	This is suitable for output with `assemble_name'. */
	311
	312	#undef ASM_GENERATE_INTERNAL_LABEL
	313	#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
	314	sprintf (LABEL, "*.L%s%ld", PREFIX, (long)(NUM))
	315
	316	/* DWARF bits. */
	317
	318	/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
	319	Obviously the Dwarf2 folks haven't tried to actually build systems
	320	with their spec. On a 64-bit system, only 64-bit relocs become
	321	RELATIVE relocations. */
	322
	323	/* #define DWARF_OFFSET_SIZE PTR_SIZE */
	324
	325	#undef DITF_CONVERSION_LIBFUNCS
	326	#define DITF_CONVERSION_LIBFUNCS 1
	327
	328	#if defined(HAVE_LD_EH_FRAME_HDR)
	329	#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
	330	#endif
	331	\f
	332	#ifdef HAVE_AS_TLS
	333	#undef TARGET_SUN_TLS
	334	#undef TARGET_GNU_TLS
	335	#define TARGET_SUN_TLS 0
	336	#define TARGET_GNU_TLS 1
	337	#endif
	338	\f
	339	/* Don't be different from other Linux platforms in this regard. */
	340	#define HANDLE_PRAGMA_PACK_PUSH_POP
	341
	342	/* We use GNU ld so undefine this so that attribute((init_priority)) works. */
	343	#undef CTORS_SECTION_ASM_OP
	344	#undef DTORS_SECTION_ASM_OP
	345
	346	/* Determine whether the entire c99 runtime is present in the
	347	runtime library. */
	348	#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
	349
	350	/* Whether we have sincos that follows the GNU extension. */
	351	#define TARGET_HAS_SINCOS (OPTION_GLIBC)
	352
	353	#define TARGET_POSIX_IO
	354
	355	#undef LINK_GCC_C_SEQUENCE_SPEC
	356	#define LINK_GCC_C_SEQUENCE_SPEC \
	357	"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
	358
	359	/* Use --as-needed -lgcc_s for eh support. */
	360	#ifdef HAVE_LD_AS_NEEDED
	361	#define USE_LD_AS_NEEDED 1
	362	#endif
	363
	364	#define MD_UNWIND_SUPPORT "config/sparc/linux-unwind.h"
	365
	366	/* Linux currently uses RMO in uniprocessor mode, which is equivalent to
	367	TMO, and TMO in multiprocessor mode. But they reserve the right to
	368	change their minds. */
	369	#undef SPARC_RELAXED_ORDERING
	370	#define SPARC_RELAXED_ORDERING true
	371
	372	#undef NEED_INDICATE_EXEC_STACK
	373	#define NEED_INDICATE_EXEC_STACK 1
	374
	375	#ifdef TARGET_LIBC_PROVIDES_SSP
	376	/* sparc glibc provides __stack_chk_guard in [%g7 + 0x14],
	377	sparc64 glibc provides it at [%g7 + 0x28]. */
	378	#define TARGET_THREAD_SSP_OFFSET (TARGET_ARCH64 ? 0x28 : 0x14)
	379	#endif
	380
	381	/* Define if long doubles should be mangled as 'g'. */
	382	#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING