gcc/config/sparc/netbsd-elf.h

   1 /* Definitions of target machine for GCC, for ELF on NetBSD/sparc
   2    and NetBSD/sparc64.
   3    Copyright (C) 2002, 2003, 2004, 2005, 2007, 2010, 2011
   4    Free Software Foundation, Inc.
   5    Contributed by Matthew Green (mrg@eterna.com.au).
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 3, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 #define TARGET_OS_CPP_BUILTINS()                        \
  24   do                                                    \
  25     {                                                   \
  26       NETBSD_OS_CPP_BUILTINS_ELF();                     \
  27       if (TARGET_ARCH64)                                \
  28         {                                               \
  29           builtin_define ("__sparc64__");               \
  30           builtin_define ("__sparc_v9__");              \
  31           builtin_define ("__sparcv9");                 \
  32         }                                               \
  33       else                                              \
  34         builtin_define ("__sparc");                     \
  35       builtin_define ("__sparc__");                     \
  36     }                                                   \
  37   while (0)
  38
  39 /* CPP defines used by all NetBSD targets.  */
  40 #undef CPP_SUBTARGET_SPEC
  41 #define CPP_SUBTARGET_SPEC "%(netbsd_cpp_spec)"
  42
  43 /* SIZE_TYPE and PTRDIFF_TYPE are wrong from sparc/sparc.h.  */
  44 #undef SIZE_TYPE
  45 #define SIZE_TYPE "long unsigned int"
  46
  47 #undef PTRDIFF_TYPE
  48 #define PTRDIFF_TYPE "long int"
  49
  50 /* This is the char to use for continuation (in case we need to turn
  51    continuation back on).  */
  52 #undef DBX_CONTIN_CHAR
  53 #define DBX_CONTIN_CHAR '?'
  54
  55 #undef  LOCAL_LABEL_PREFIX
  56 #define LOCAL_LABEL_PREFIX  "."
  57
  58 /* This is how to store into the string LABEL
  59    the symbol_ref name of an internal numbered label where
  60    PREFIX is the class of label and NUM is the number within the class.
  61    This is suitable for output with `assemble_name'.  */
  62
  63 #undef  ASM_GENERATE_INTERNAL_LABEL
  64 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  65   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  66
  67 #undef USER_LABEL_PREFIX
  68 #define USER_LABEL_PREFIX ""
  69
  70 #undef ASM_SPEC
  71 #define ASM_SPEC "%{fpic|fPIC|fpie|fPIE:-K PIC} \
  72 %{mlittle-endian:-EL} \
  73 %(asm_cpu) %(asm_arch) %(asm_relax)"
  74
  75 #undef STDC_0_IN_SYSTEM_HEADERS
  76
  77 #define HAVE_ENABLE_EXECUTE_STACK
  78
  79 /* Below here exists the merged NetBSD/sparc & NetBSD/sparc64 compiler
  80    description, allowing one to build 32-bit or 64-bit applications
  81    on either.  We define the sparc & sparc64 versions of things,
  82    occasionally a neutral version (should be the same as "netbsd-elf.h")
  83    and then based on SPARC_BI_ARCH, DEFAULT_ARCH32_P, and TARGET_CPU_DEFAULT,
  84    we choose the correct version.  */
  85
  86 /* We use the default NetBSD ELF STARTFILE_SPEC and ENDFILE_SPEC
  87    definitions, even for the SPARC_BI_ARCH compiler, because NetBSD does
  88    not have a default place to find these libraries..  */
  89
  90 /* TARGET_CPU_DEFAULT is set in Makefile.in.  We test for 64-bit default
  91    platform here.  */
  92
  93 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
  94  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
  95 /* A 64 bit v9 compiler with stack-bias,
  96    in a Medium/Low code model environment.  */
  97
  98 #undef TARGET_DEFAULT
  99 #define TARGET_DEFAULT \
 100   (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
 101    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
 102
 103 #undef SPARC_DEFAULT_CMODEL
 104 #define SPARC_DEFAULT_CMODEL CM_MEDANY
 105
 106 #endif
 107
 108 /* CC1_SPEC for NetBSD/sparc.  */
 109 #define CC1_SPEC32 \
 110  "%{m32:%{m64:%emay not use both -m32 and -m64}} \
 111   %{m64: \
 112     -mptr64 -mstack-bias -mno-v8plus -mlong-double-128 \
 113     %{!mcpu*:%{!mv8plus:-mcpu=ultrasparc}} \
 114     %{!mno-vis:%{!mcpu=v9:-mvis}} \
 115     %{p:-mcmodel=medlow} \
 116     %{pg:-mcmodel=medlow}}"
 117
 118 #define CC1_SPEC64 \
 119  "%{m32:%{m64:%emay not use both -m32 and -m64}} \
 120   %{m32: \
 121     -mptr32 -mno-stack-bias \
 122     %{!mlong-double-128:-mlong-double-64} \
 123     %{!mcpu*:%{!mv8plus:-mcpu=cypress}}} \
 124   %{!m32: \
 125     %{p:-mcmodel=medlow} \
 126     %{pg:-mcmodel=medlow}}"
 127
 128 /* Make sure we use the right output format.  Pick a default and then
 129    make sure -m32/-m64 switch to the right one.  */
 130
 131 #define LINK_ARCH32_SPEC "-m elf32_sparc"
 132
 133 #define LINK_ARCH64_SPEC "-m elf64_sparc"
 134
 135 #define LINK_ARCH_SPEC \
 136  "%{m32:%(link_arch32)} \
 137   %{m64:%(link_arch64)} \
 138   %{!m32:%{!m64:%(link_arch_default)}}"
 139
 140 #undef LINK_SPEC
 141 #define LINK_SPEC \
 142  "%(link_arch) \
 143   %{!mno-relax:%{!r:-relax}} \
 144   %(netbsd_link_spec)"
 145
 146 #define NETBSD_ENTRY_POINT "__start"
 147
 148 #if DEFAULT_ARCH32_P
 149 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH32_SPEC
 150 #else
 151 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH64_SPEC
 152 #endif
 153
 154 /* What extra spec entries do we need?  */
 155 #undef SUBTARGET_EXTRA_SPECS
 156 #define SUBTARGET_EXTRA_SPECS \
 157   { "link_arch32",              LINK_ARCH32_SPEC }, \
 158   { "link_arch64",              LINK_ARCH64_SPEC }, \
 159   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC }, \
 160   { "link_arch",                LINK_ARCH_SPEC }, \
 161   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC }, \
 162   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF }, \
 163   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 164
 165
 166 /* Build a compiler that supports -m32 and -m64?  */
 167
 168 #ifdef SPARC_BI_ARCH
 169
 170 #undef LONG_DOUBLE_TYPE_SIZE
 171 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 172
 173 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
 174 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 175 #else
 176 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 177 #endif
 178
 179 #undef  CC1_SPEC
 180 #if DEFAULT_ARCH32_P
 181 #define CC1_SPEC CC1_SPEC32
 182 #else
 183 #define CC1_SPEC CC1_SPEC64
 184 #endif
 185
 186 #if DEFAULT_ARCH32_P
 187 #define MULTILIB_DEFAULTS { "m32" }
 188 #else
 189 #define MULTILIB_DEFAULTS { "m64" }
 190 #endif
 191
 192 #else   /* SPARC_BI_ARCH */
 193
 194 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 195  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 196
 197 #undef LONG_DOUBLE_TYPE_SIZE
 198 #define LONG_DOUBLE_TYPE_SIZE 128
 199
 200 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 201 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 202
 203 #undef  CC1_SPEC
 204 #define CC1_SPEC CC1_SPEC64
 205
 206 #else   /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 207         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 208
 209 /* A 32-bit only compiler.  NetBSD don't support 128 bit `long double'
 210    for 32-bit code, unlike Solaris.  */
 211
 212 #undef LONG_DOUBLE_TYPE_SIZE
 213 #define LONG_DOUBLE_TYPE_SIZE 64
 214
 215 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 216 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 217
 218 #undef  CC1_SPEC
 219 #define CC1_SPEC CC1_SPEC32
 220
 221 #endif  /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 222         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 223
 224 #endif  /* SPARC_BI_ARCH */
 225
 226 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 227 #undef CTORS_SECTION_ASM_OP
 228 #undef DTORS_SECTION_ASM_OP