gcc/config/sparc/freebsd.h

   1 /* Definitions for Sun SPARC64 running FreeBSD using the ELF format
   2    Copyright (C) 2001-2024 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 "%{" FPIE_OR_FPIC_SPEC ":-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.cc,
  60    c-common.cc, 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  SPARC_LONG_DOUBLE_TYPE_SIZE
  72 #define SPARC_LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
  73
  74 /* Definitions for 64-bit SPARC running systems with ELF. */
  75
  76 #define TARGET_ELF              1
  77
  78 /* XXX */
  79 /* A 64 bit v9 compiler with stack-bias,
  80    in a Medium/mid code model environment.  */
  81
  82 #undef  TARGET_DEFAULT
  83 #define TARGET_DEFAULT \
  84   (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
  85    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
  86    + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
  87
  88 /* The default code model.  */
  89 #undef  SPARC_DEFAULT_CMODEL
  90 #define SPARC_DEFAULT_CMODEL    CM_MEDLOW
  91
  92 #define HAVE_ENABLE_EXECUTE_STACK
  93
  94 /************************[  Assembler stuff  ]********************************/
  95
  96 #undef  LOCAL_LABEL_PREFIX
  97 #define LOCAL_LABEL_PREFIX  "."
  98
  99 /* XXX2 */
 100 /* This is how to store into the string LABEL
 101    the symbol_ref name of an internal numbered label where
 102    PREFIX is the class of label and NUM is the number within the class.
 103    This is suitable for output with `assemble_name'.  */
 104
 105 #undef  ASM_GENERATE_INTERNAL_LABEL
 106 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)                   \
 107   sprintf (LABEL, "*.L%s%lu", PREFIX, (unsigned long)(NUM))
 108
 109
 110 /************************[  Debugger stuff  ]*********************************/
 111
 112 /* DWARF bits.  */
 113
 114 /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
 115    Obviously the Dwarf2 folks havn't tried to actually build systems
 116    with their spec.  On a 64-bit system, only 64-bit relocs become
 117    RELATIVE relocations.  */
 118
 119 /* #define DWARF_OFFSET_SIZE PTR_SIZE */
 120
 121 #ifdef HAVE_AS_TLS
 122 #undef TARGET_SUN_TLS
 123 #undef TARGET_GNU_TLS
 124 #define TARGET_SUN_TLS 0
 125 #define TARGET_GNU_TLS 1
 126 #endif
 127
 128 #undef ENDFILE_SPEC
 129 #define ENDFILE_SPEC                                            \
 130   "%{Ofast|ffast-math|funsafe-math-optimizations:%{!shared:crtfastmath.o%s}} "  \
 131   FBSD_ENDFILE_SPEC
 132
 133 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 134 #undef CTORS_SECTION_ASM_OP
 135 #undef DTORS_SECTION_ASM_OP