gnu/dist/gcc4/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 Free Software Foundation, Inc.
   4    Contributed by Matthew Green (mrg@eterna.com.au).
   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 2, 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 COPYING.  If not, write to
  20 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  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 /* Make sure these are undefined.  */
  40 #undef MD_EXEC_PREFIX
  41 #undef MD_STARTFILE_PREFIX
  42
  43 /* CPP defines used by all NetBSD targets.  */
  44 #undef CPP_SUBTARGET_SPEC
  45 #define CPP_SUBTARGET_SPEC "%(netbsd_cpp_spec)"
  46
  47 /* SIZE_TYPE and PTRDIFF_TYPE are wrong from sparc/sparc.h.  */
  48 #undef SIZE_TYPE
  49 #define SIZE_TYPE "long unsigned int"
  50
  51 #undef PTRDIFF_TYPE
  52 #define PTRDIFF_TYPE "long int"
  53
  54 /* This is the char to use for continuation (in case we need to turn
  55    continuation back on).  */
  56 #undef DBX_CONTIN_CHAR
  57 #define DBX_CONTIN_CHAR '?'
  58
  59 #undef  LOCAL_LABEL_PREFIX
  60 #define LOCAL_LABEL_PREFIX  "."
  61
  62 /* This is how to store into the string LABEL
  63    the symbol_ref name of an internal numbered label where
  64    PREFIX is the class of label and NUM is the number within the class.
  65    This is suitable for output with `assemble_name'.  */
  66
  67 #undef  ASM_GENERATE_INTERNAL_LABEL
  68 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  69   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  70
  71 #undef USER_LABEL_PREFIX
  72 #define USER_LABEL_PREFIX ""
  73
  74 #undef ASM_SPEC
  75 #define ASM_SPEC "%{fpic|fPIC|fpie|fPIE:-K PIC} %{V} %{v:%{!V:-V}} \
  76 %{mlittle-endian:-EL} \
  77 %(asm_cpu) %(asm_arch) %(asm_relax)"
  78
  79 #undef STDC_0_IN_SYSTEM_HEADERS
  80
  81 /* Attempt to enable execute permissions on the stack.  */
  82 #define ENABLE_EXECUTE_STACK NETBSD_ENABLE_EXECUTE_STACK
  83
  84 #undef TARGET_VERSION
  85 #define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME);
  86
  87 /* Below here exists the merged NetBSD/sparc & NetBSD/sparc64 compiler
  88    description, allowing one to build 32 bit or 64 bit applications
  89    on either.  We define the sparc & sparc64 versions of things,
  90    occasionally a neutral version (should be the same as "netbsd-elf.h")
  91    and then based on SPARC_BI_ARCH, DEFAULT_ARCH32_P, and TARGET_CPU_DEFAULT,
  92    we choose the correct version.  */
  93
  94 /* We use the default NetBSD ELF STARTFILE_SPEC and ENDFILE_SPEC
  95    definitions, even for the SPARC_BI_ARCH compiler, because NetBSD does
  96    not have a default place to find these libraries..  */
  97
  98 /* Name the port(s).  */
  99 #define TARGET_NAME64     "NetBSD/sparc64 ELF"
 100 #define TARGET_NAME32     "NetBSD/sparc ELF"
 101
 102 /* TARGET_CPU_DEFAULT is set in Makefile.in.  We test for 64-bit default
 103    platform here.  */
 104
 105 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 106  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 107 /* A 64 bit v9 compiler with stack-bias,
 108    in a Medium/Low code model environment.  */
 109
 110 #undef TARGET_DEFAULT
 111 #define TARGET_DEFAULT \
 112   (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
 113    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
 114
 115 #undef SPARC_DEFAULT_CMODEL
 116 #define SPARC_DEFAULT_CMODEL CM_MEDLOW
 117
 118 #endif
 119
 120 /* CC1_SPEC for NetBSD/sparc.  */
 121 #define CC1_SPEC32 \
 122  "%{sun4:} %{target:} \
 123   %{mcypress:-mcpu=cypress} \
 124   %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
 125   %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
 126   %{m32:%{m64:%emay not use both -m32 and -m64}} \
 127   %{m64: \
 128     -mptr64 -mstack-bias -mno-v8plus -mlong-double-128 \
 129     %{!mcpu*: \
 130       %{!mcypress: \
 131         %{!msparclite: \
 132           %{!mf930: \
 133             %{!mf934: \
 134               %{!mv8*: \
 135                 %{!msupersparc:-mcpu=ultrasparc}}}}}}} \
 136     %{!mno-vis:%{!mcpu=v9:-mvis}}}" \
 137   NETBSD_CC1_AND_CC1PLUS_SPEC
 138
 139 #define CC1_SPEC64 \
 140  "%{sun4:} %{target:} \
 141   %{mcypress:-mcpu=cypress} \
 142   %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
 143   %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
 144   %{m32:%{m64:%emay not use both -m32 and -m64}} \
 145   %{m32: \
 146     -mptr32 -mno-stack-bias \
 147     %{!mlong-double-128:-mlong-double-64} \
 148     %{!mcpu*: \
 149       %{!mcypress: \
 150         %{!msparclite: \
 151           %{!mf930: \
 152             %{!mf934: \
 153               %{!mv8*: \
 154                 %{!msupersparc:-mcpu=cypress}}}}}}}}" \
 155   NETBSD_CC1_AND_CC1PLUS_SPEC
 156
 157 /* Make sure we use the right output format.  Pick a default and then
 158    make sure -m32/-m64 switch to the right one.  */
 159
 160 #define LINK_ARCH32_SPEC "-m elf32_sparc"
 161
 162 #define LINK_ARCH64_SPEC "-m elf64_sparc"
 163
 164 #define LINK_ARCH_SPEC \
 165  "%{m32:%(link_arch32)} \
 166   %{m64:%(link_arch64)} \
 167   %{!m32:%{!m64:%(link_arch_default)}}"
 168
 169 #undef LINK_SPEC
 170 #define LINK_SPEC \
 171  "%(link_arch) \
 172   %{!mno-relax:%{!r:-relax}} \
 173   %(netbsd_link_spec)"
 174
 175 #define NETBSD_ENTRY_POINT "__start"
 176
 177 #if DEFAULT_ARCH32_P
 178 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH32_SPEC
 179 #else
 180 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH64_SPEC
 181 #endif
 182
 183 /* What extra spec entries do we need?  */
 184 #undef SUBTARGET_EXTRA_SPECS
 185 #define SUBTARGET_EXTRA_SPECS \
 186   { "link_arch32",              LINK_ARCH32_SPEC }, \
 187   { "link_arch64",              LINK_ARCH64_SPEC }, \
 188   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC }, \
 189   { "link_arch",                LINK_ARCH_SPEC }, \
 190   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC }, \
 191   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF }, \
 192   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 193
 194
 195 /* Build a compiler that supports -m32 and -m64?  */
 196
 197 #ifdef SPARC_BI_ARCH
 198
 199 #undef LONG_DOUBLE_TYPE_SIZE
 200 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 201
 202 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
 203 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 204 #else
 205 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 206 #endif
 207
 208 #undef  CC1_SPEC
 209 #if DEFAULT_ARCH32_P
 210 #define CC1_SPEC CC1_SPEC32
 211 #else
 212 #define CC1_SPEC CC1_SPEC64
 213 #endif
 214
 215 #if DEFAULT_ARCH32_P
 216 #define MULTILIB_DEFAULTS { "m32" }
 217 #else
 218 #define MULTILIB_DEFAULTS { "m64" }
 219 #endif
 220
 221 /* Name the port.  */
 222 #undef TARGET_NAME
 223 #define TARGET_NAME     (DEFAULT_ARCH32_P ? TARGET_NAME32 : TARGET_NAME64)
 224
 225 #else   /* SPARC_BI_ARCH */
 226
 227 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 228  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 229
 230 #undef LONG_DOUBLE_TYPE_SIZE
 231 #define LONG_DOUBLE_TYPE_SIZE 128
 232
 233 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 234 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 235
 236 #undef  CC1_SPEC
 237 #define CC1_SPEC CC1_SPEC64
 238
 239 #undef TARGET_NAME
 240 #define TARGET_NAME     TARGET_NAME64
 241
 242 #else   /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 243         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 244
 245 /* A 32-bit only compiler.  NetBSD don't support 128 bit `long double'
 246    for 32-bit code, unlike Solaris.  */
 247
 248 #undef LONG_DOUBLE_TYPE_SIZE
 249 #define LONG_DOUBLE_TYPE_SIZE 64
 250
 251 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 252 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 253
 254 #undef  CC1_SPEC
 255 #define CC1_SPEC CC1_SPEC32
 256
 257 #undef TARGET_NAME
 258 #define TARGET_NAME     TARGET_NAME32
 259
 260 #endif  /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 261         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 262
 263 #endif  /* SPARC_BI_ARCH */
 264
 265 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 266 #undef CTORS_SECTION_ASM_OP
 267 #undef DTORS_SECTION_ASM_OP