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 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, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, 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 #undef PREFERRED_DEBUGGING_TYPE
  55 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  56
  57 /* This is the char to use for continuation (in case we need to turn
  58    continuation back on).  */
  59 #undef DBX_CONTIN_CHAR
  60 #define DBX_CONTIN_CHAR '?'
  61
  62 #undef  LOCAL_LABEL_PREFIX
  63 #define LOCAL_LABEL_PREFIX  "."
  64
  65 /* This is how to output a reference to an internal numbered label where
  66    PREFIX is the class of label and NUM is the number within the class.  */
  67
  68 #undef  ASM_OUTPUT_INTERNAL_LABELREF
  69 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)   \
  70   fprintf (FILE, ".L%s%d", PREFIX, NUM)
  71
  72 /* This is how to store into the string LABEL
  73    the symbol_ref name of an internal numbered label where
  74    PREFIX is the class of label and NUM is the number within the class.
  75    This is suitable for output with `assemble_name'.  */
  76
  77 #undef  ASM_GENERATE_INTERNAL_LABEL
  78 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  79   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  80
  81 #undef USER_LABEL_PREFIX
  82 #define USER_LABEL_PREFIX ""
  83
  84 #undef ASM_SPEC
  85 #define ASM_SPEC "%{fpic|fPIC|fpie|fPIE:-K PIC} %{V} %{v:%{!V:-V}} \
  86 %{mlittle-endian:-EL} \
  87 %(asm_cpu) %(asm_arch) %(asm_relax)"
  88
  89 #undef STDC_0_IN_SYSTEM_HEADERS
  90
  91 /* Attempt to enable execute permissions on the stack.  */
  92 #define TRANSFER_FROM_TRAMPOLINE NETBSD_ENABLE_EXECUTE_STACK
  93
  94 #undef TARGET_VERSION
  95 #define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME);
  96
  97 /* Below here exists the merged NetBSD/sparc & NetBSD/sparc64 compiler
  98    description, allowing one to build 32 bit or 64 bit applications
  99    on either.  We define the sparc & sparc64 versions of things,
 100    occasionally a neutral version (should be the same as "netbsd-elf.h")
 101    and then based on SPARC_BI_ARCH, DEFAULT_ARCH32_P, and TARGET_CPU_DEFAULT,
 102    we choose the correct version.  */
 103
 104 /* We use the default NetBSD ELF STARTFILE_SPEC and ENDFILE_SPEC
 105    definitions, even for the SPARC_BI_ARCH compiler, because NetBSD does
 106    not have a default place to find these libraries..  */
 107
 108 /* Name the port(s).  */
 109 #define TARGET_NAME64     "NetBSD/sparc64 ELF"
 110 #define TARGET_NAME32     "NetBSD/sparc ELF"
 111
 112 /* TARGET_CPU_DEFAULT is set in Makefile.in.  We test for 64-bit default
 113    platform here.  */
 114
 115 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 116  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 117 /* A 64 bit v9 compiler with stack-bias,
 118    in a Medium/Low code model environment.  */
 119
 120 #undef TARGET_DEFAULT
 121 #define TARGET_DEFAULT \
 122   (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
 123    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
 124
 125 #undef SPARC_DEFAULT_CMODEL
 126 #define SPARC_DEFAULT_CMODEL CM_MEDANY
 127
 128 #endif
 129
 130 /* CC1_SPEC for NetBSD/sparc.  */
 131 #define CC1_SPEC32 \
 132  "%{sun4:} %{target:} \
 133   %{mcypress:-mcpu=cypress} \
 134   %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
 135   %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
 136   %{m32:%{m64:%emay not use both -m32 and -m64}} \
 137   %{m64: \
 138     -mptr64 -mstack-bias -mno-v8plus -mlong-double-128 \
 139     %{!mcpu*: \
 140       %{!mcypress: \
 141         %{!msparclite: \
 142           %{!mf930: \
 143             %{!mf934: \
 144               %{!mv8*: \
 145                 %{!msupersparc:-mcpu=ultrasparc}}}}}}} \
 146     %{!mno-vis:%{!mcpu=v9:-mvis}} \
 147     %{p:-mcmodel=medlow} \
 148     %{pg:-mcmodel=medlow}}"
 149
 150 #define CC1_SPEC64 \
 151  "%{sun4:} %{target:} \
 152   %{mcypress:-mcpu=cypress} \
 153   %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
 154   %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
 155   %{m32:%{m64:%emay not use both -m32 and -m64}} \
 156   %{m32: \
 157     -mptr32 -mno-stack-bias \
 158     %{!mlong-double-128:-mlong-double-64} \
 159     %{!mcpu*: \
 160       %{!mcypress: \
 161         %{!msparclite: \
 162           %{!mf930: \
 163             %{!mf934: \
 164               %{!mv8*: \
 165                 %{!msupersparc:-mcpu=cypress}}}}}}}} \
 166   %{!m32: \
 167     %{p:-mcmodel=medlow} \
 168     %{pg:-mcmodel=medlow}}"
 169
 170 /* Make sure we use the right output format.  Pick a default and then
 171    make sure -m32/-m64 switch to the right one.  */
 172
 173 #define LINK_ARCH32_SPEC "-m elf32_sparc"
 174
 175 #define LINK_ARCH64_SPEC "-m elf64_sparc"
 176
 177 #define LINK_ARCH_SPEC \
 178  "%{m32:%(link_arch32)} \
 179   %{m64:%(link_arch64)} \
 180   %{!m32:%{!m64:%(link_arch_default)}}"
 181
 182 #undef LINK_SPEC
 183 #define LINK_SPEC \
 184  "%(link_arch) \
 185   %{!mno-relax:%{!r:-relax}} \
 186   %(netbsd_link_spec)"
 187
 188 #define NETBSD_ENTRY_POINT "__start"
 189
 190 #if DEFAULT_ARCH32_P
 191 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH32_SPEC
 192 #else
 193 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH64_SPEC
 194 #endif
 195
 196 /* What extra spec entries do we need?  */
 197 #undef SUBTARGET_EXTRA_SPECS
 198 #define SUBTARGET_EXTRA_SPECS \
 199   { "link_arch32",              LINK_ARCH32_SPEC }, \
 200   { "link_arch64",              LINK_ARCH64_SPEC }, \
 201   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC }, \
 202   { "link_arch",                LINK_ARCH_SPEC }, \
 203   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC }, \
 204   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF }, \
 205   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 206
 207
 208 /* What extra switches do we need?  */
 209 #undef  SUBTARGET_SWITCHES
 210 #define SUBTARGET_SWITCHES \
 211   {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
 212   {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
 213
 214
 215 /* Build a compiler that supports -m32 and -m64?  */
 216
 217 #ifdef SPARC_BI_ARCH
 218
 219 #undef LONG_DOUBLE_TYPE_SIZE
 220 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 221
 222 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
 223 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 224 #else
 225 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 226 #endif
 227
 228 #undef  CC1_SPEC
 229 #if DEFAULT_ARCH32_P
 230 #define CC1_SPEC CC1_SPEC32
 231 #else
 232 #define CC1_SPEC CC1_SPEC64
 233 #endif
 234
 235 #if DEFAULT_ARCH32_P
 236 #define MULTILIB_DEFAULTS { "m32" }
 237 #else
 238 #define MULTILIB_DEFAULTS { "m64" }
 239 #endif
 240
 241 /* Name the port.  */
 242 #undef TARGET_NAME
 243 #define TARGET_NAME     (DEFAULT_ARCH32_P ? TARGET_NAME32 : TARGET_NAME64)
 244
 245 #else   /* SPARC_BI_ARCH */
 246
 247 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 248  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 249
 250 #undef LONG_DOUBLE_TYPE_SIZE
 251 #define LONG_DOUBLE_TYPE_SIZE 128
 252
 253 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 254 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 255
 256 #undef  CC1_SPEC
 257 #define CC1_SPEC CC1_SPEC64
 258
 259 #undef TARGET_NAME
 260 #define TARGET_NAME     TARGET_NAME64
 261
 262 #else   /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 263         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 264
 265 /* A 32-bit only compiler.  NetBSD don't support 128 bit `long double'
 266    for 32-bit code, unlike Solaris.  */
 267
 268 #undef LONG_DOUBLE_TYPE_SIZE
 269 #define LONG_DOUBLE_TYPE_SIZE 64
 270
 271 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 272 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 273
 274 #undef  CC1_SPEC
 275 #define CC1_SPEC CC1_SPEC32
 276
 277 #undef TARGET_NAME
 278 #define TARGET_NAME     TARGET_NAME32
 279
 280 #endif  /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 281         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 282
 283 #endif  /* SPARC_BI_ARCH */
 284
 285 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 286 #undef CTORS_SECTION_ASM_OP
 287 #undef DTORS_SECTION_ASM_OP