gcc/config/sparc/freebsd.h

   1 /* Definitions for Sun SPARC64 running FreeBSD using the ELF format
   2    Copyright (C) 2001-2013 Free Software Foundation, Inc.
   3    Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #undef  SUBTARGET_EXTRA_SPECS
  22 #define SUBTARGET_EXTRA_SPECS \
  23   { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
  24
  25 /* FreeBSD needs the platform name (sparc64) defined.
  26    Emacs etc needs to know if the arch is 64 or 32-bits.
  27    This also selects which targets are available via -mcpu.  */
  28
  29 #undef  FBSD_TARGET_CPU_CPP_BUILTINS
  30 #define FBSD_TARGET_CPU_CPP_BUILTINS()          \
  31   do                                            \
  32     {                                           \
  33       builtin_define ("__sparc64__");           \
  34       builtin_define ("__sparc__");             \
  35       builtin_define ("__sparc_v9__");          \
  36       builtin_define ("__sparcv9");             \
  37     }                                           \
  38   while (0)
  39
  40 #undef ASM_SPEC
  41 #define ASM_SPEC "%{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu)"
  42
  43 #define LINK_SPEC "%(link_arch)                                         \
  44   %{!mno-relax:%{!r:-relax}}                                            \
  45   %{p:%nconsider using '-pg' instead of '-p' with gprof(1)}             \
  46   %{assert*} %{R*} %{rpath*} %{defsym*}                                 \
  47   %{shared:-Bshareable %{h*} %{soname*}}                                \
  48   %{symbolic:-Bsymbolic}                                                \
  49   %{!shared:                                                            \
  50     %{!static:                                                          \
  51       %{rdynamic:-export-dynamic}                                       \
  52       -dynamic-linker %(fbsd_dynamic_linker) }  \
  53     %{static:-Bstatic}}"
  54
  55
  56 /************************[  Target stuff  ]***********************************/
  57
  58 /* Define the actual types of some ANSI-mandated types.
  59    Needs to agree with <machine/ansi.h>.  GCC defaults come from c-decl.c,
  60    c-common.c, and config/<arch>/<arch>.h.  */
  61
  62 /* Earlier headers may get this wrong for FreeBSD.
  63    We use the GCC defaults instead.  */
  64 #undef WCHAR_TYPE
  65
  66 #undef  WCHAR_TYPE_SIZE
  67 #define WCHAR_TYPE_SIZE 32
  68
  69 /* Define for support of TFmode long double.
  70    SPARC ABI says that long double is 4 words.  */
  71 #undef  LONG_DOUBLE_TYPE_SIZE
  72 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
  73
  74 /* Define this to set long double type size to use in libgcc2.c, which can
  75    not depend on target_flags.  */
  76 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
  77 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
  78 #else
  79 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
  80 #endif
  81
  82 /* Definitions for 64-bit SPARC running systems with ELF. */
  83
  84 #define TARGET_ELF              1
  85
  86 /* XXX */
  87 /* A 64 bit v9 compiler with stack-bias,
  88    in a Medium/mid code model environment.  */
  89
  90 #undef  TARGET_DEFAULT
  91 #define TARGET_DEFAULT \
  92   (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
  93    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
  94    + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
  95
  96 /* The default code model.  */
  97 #undef  SPARC_DEFAULT_CMODEL
  98 #define SPARC_DEFAULT_CMODEL    CM_MEDLOW
  99
 100 #define HAVE_ENABLE_EXECUTE_STACK
 101
 102 /************************[  Assembler stuff  ]********************************/
 103
 104 #undef  LOCAL_LABEL_PREFIX
 105 #define LOCAL_LABEL_PREFIX  "."
 106
 107 /* XXX2 */
 108 /* This is how to store into the string LABEL
 109    the symbol_ref name of an internal numbered label where
 110    PREFIX is the class of label and NUM is the number within the class.
 111    This is suitable for output with `assemble_name'.  */
 112
 113 #undef  ASM_GENERATE_INTERNAL_LABEL
 114 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)                   \
 115   sprintf (LABEL, "*.L%s%lu", PREFIX, (unsigned long)(NUM))
 116
 117
 118 /************************[  Debugger stuff  ]*********************************/
 119
 120 /* This is the char to use for continuation (in case we need to turn
 121    continuation back on).  */
 122
 123 #undef  DBX_CONTIN_CHAR
 124 #define DBX_CONTIN_CHAR '?'
 125
 126 /* DWARF bits.  */
 127
 128 /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
 129    Obviously the Dwarf2 folks havn't tried to actually build systems
 130    with their spec.  On a 64-bit system, only 64-bit relocs become
 131    RELATIVE relocations.  */
 132
 133 /* #define DWARF_OFFSET_SIZE PTR_SIZE */
 134
 135 #ifdef HAVE_AS_TLS
 136 #undef TARGET_SUN_TLS
 137 #undef TARGET_GNU_TLS
 138 #define TARGET_SUN_TLS 0
 139 #define TARGET_GNU_TLS 1
 140 #endif
 141
 142 #undef ENDFILE_SPEC
 143 #define ENDFILE_SPEC                                            \
 144   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} "     \
 145   FBSD_ENDFILE_SPEC
 146
 147 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 148 #undef CTORS_SECTION_ASM_OP
 149 #undef DTORS_SECTION_ASM_OP