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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [sparc/] [freebsd.h] - Blame information for rev 282

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1 282 jeremybenn
/* Definitions for Sun SPARC64 running FreeBSD using the ELF format
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   Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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   Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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#undef  SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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  { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
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/* FreeBSD needs the platform name (sparc64) defined.
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   Emacs needs to know if the arch is 64 or 32-bits.  */
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#undef  CPP_CPU64_DEFAULT_SPEC
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#define CPP_CPU64_DEFAULT_SPEC \
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  "-D__sparc64__ -D__sparc_v9__ -D__sparcv9 -D__arch64__"
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#define LINK_SPEC "%(link_arch)                                         \
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  %{!mno-relax:%{!r:-relax}}                                            \
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  %{p:%nconsider using `-pg' instead of `-p' with gprof(1)}             \
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  %{assert*} %{R*} %{rpath*} %{defsym*}                                 \
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  %{shared:-Bshareable %{h*} %{soname*}}                                \
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  %{symbolic:-Bsymbolic}                                                \
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  %{!shared:                                                            \
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    %{!static:                                                          \
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      %{rdynamic:-export-dynamic}                                       \
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      %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }}       \
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    %{static:-Bstatic}}"
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/************************[  Target stuff  ]***********************************/
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/* Define the actual types of some ANSI-mandated types.
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   Needs to agree with <machine/ansi.h>.  GCC defaults come from c-decl.c,
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   c-common.c, and config/<arch>/<arch>.h.  */
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/* Earlier headers may get this wrong for FreeBSD.
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   We use the GCC defaults instead.  */
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#undef WCHAR_TYPE
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#undef  WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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/* Define for support of TFmode long double.
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   SPARC ABI says that long double is 4 words.  */
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#undef  LONG_DOUBLE_TYPE_SIZE
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#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
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/* Define this to set long double type size to use in libgcc2.c, which can
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   not depend on target_flags.  */
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#if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
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#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
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#else
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#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
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#endif
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/* Definitions for 64-bit SPARC running systems with ELF. */
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#undef  TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (FreeBSD/sparc64 ELF)");
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#define TARGET_ELF              1
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/* XXX */
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/* A 64 bit v9 compiler with stack-bias,
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   in a Medium/mid code model environment.  */
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#undef  TARGET_DEFAULT
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#define TARGET_DEFAULT \
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  (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
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   + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
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   + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
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/* The default code model.  */
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#undef  SPARC_DEFAULT_CMODEL
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#define SPARC_DEFAULT_CMODEL    CM_MEDLOW
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#define ENABLE_EXECUTE_STACK                                            \
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  static int need_enable_exec_stack;                                    \
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  static void check_enabling(void) __attribute__ ((constructor));       \
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  static void check_enabling(void)                                      \
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  {                                                                     \
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    extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\
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    int prot = 0;                                                       \
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    size_t len = sizeof(prot);                                          \
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                                                                        \
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    sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0);              \
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    if (prot != 7)                                                      \
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      need_enable_exec_stack = 1;                                       \
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  }                                                                     \
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  extern void __enable_execute_stack (void *);                          \
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  void __enable_execute_stack (void *addr)                              \
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  {                                                                     \
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    if (!need_enable_exec_stack)                                        \
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      return;                                                           \
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    else {                                                              \
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      /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */                     \
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      if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0)                      \
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        perror ("mprotect of trampoline code");                         \
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    }                                                                   \
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  }
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/************************[  Assembler stuff  ]********************************/
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#undef  LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX  "."
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/* XXX2 */
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/* This is how to store into the string LABEL
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   the symbol_ref name of an internal numbered label where
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   PREFIX is the class of label and NUM is the number within the class.
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   This is suitable for output with `assemble_name'.  */
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#undef  ASM_GENERATE_INTERNAL_LABEL
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#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)                   \
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  sprintf (LABEL, "*.L%s%lu", PREFIX, (unsigned long)(NUM))
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/************************[  Debugger stuff  ]*********************************/
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/* This is the char to use for continuation (in case we need to turn
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   continuation back on).  */
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#undef  DBX_CONTIN_CHAR
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#define DBX_CONTIN_CHAR '?'
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/* DWARF bits.  */
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/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
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   Obviously the Dwarf2 folks havn't tried to actually build systems
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   with their spec.  On a 64-bit system, only 64-bit relocs become
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   RELATIVE relocations.  */
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/* #define DWARF_OFFSET_SIZE PTR_SIZE */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC                                            \
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  "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} "   \
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  FBSD_ENDFILE_SPEC
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/* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
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#undef CTORS_SECTION_ASM_OP
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#undef DTORS_SECTION_ASM_OP

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