gcc/config/sparc/netbsd-elf.h

   1 /* Definitions of target machine for GNU compiler, for ELF on NetBSD/sparc
   2    and NetBSD/sparc64.
   3    Copyright (C) 2002 Free Software Foundation, Inc.
   4    Contributed by Matthew Green (mrg@eterna.com.au).
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC 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 GNU CC 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 GNU CC; 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           NETBSD_OS_CPP_BUILTINS_LP64();                \
  30           builtin_define ("__sparc64__");               \
  31           builtin_define ("__sparc_v9__");              \
  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 /* Make sure this is undefined.  */
  44 #undef CPP_PREDEFINES
  45
  46 /* CPP defines used by all NetBSD targets.  */
  47 #undef CPP_SUBTARGET_SPEC
  48 #define CPP_SUBTARGET_SPEC "%(netbsd_cpp_spec)"
  49
  50 /* SIZE_TYPE and PTRDIFF_TYPE are wrong from sparc/sparc.h.  */
  51 #undef SIZE_TYPE
  52 #define SIZE_TYPE "long unsigned int"
  53
  54 #undef PTRDIFF_TYPE
  55 #define PTRDIFF_TYPE "long int"
  56
  57 #undef PREFERRED_DEBUGGING_TYPE
  58 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  59
  60 /* This is the char to use for continuation (in case we need to turn
  61    continuation back on).  */
  62 #undef DBX_CONTIN_CHAR
  63 #define DBX_CONTIN_CHAR '?'
  64
  65 #undef DBX_REGISTER_NUMBER
  66 #define DBX_REGISTER_NUMBER(REGNO) \
  67   (TARGET_FLAT && REGNO == HARD_FRAME_POINTER_REGNUM ? 31 : REGNO)
  68
  69 #undef  LOCAL_LABEL_PREFIX
  70 #define LOCAL_LABEL_PREFIX  "."
  71
  72 /* This is how to output a reference to an internal numbered label where
  73    PREFIX is the class of label and NUM is the number within the class.  */
  74
  75 #undef  ASM_OUTPUT_INTERNAL_LABELREF
  76 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)   \
  77   fprintf (FILE, ".L%s%d", PREFIX, NUM)
  78
  79 /* This is how to store into the string LABEL
  80    the symbol_ref name of an internal numbered label where
  81    PREFIX is the class of label and NUM is the number within the class.
  82    This is suitable for output with `assemble_name'.  */
  83
  84 #undef  ASM_GENERATE_INTERNAL_LABEL
  85 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  86   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  87
  88 #undef USER_LABEL_PREFIX
  89 #define USER_LABEL_PREFIX ""
  90
  91 #undef ASM_SPEC
  92 #define ASM_SPEC "%{fpic:-K PIC} %{fPIC:-K PIC} %{V} %{v:%{!V:-V}} \
  93 %{mlittle-endian:-EL} \
  94 %(asm_cpu) %(asm_arch) %(asm_relax)"
  95
  96 #undef STDC_0_IN_SYSTEM_HEADERS
  97
  98 /* Attempt to enable execute permissions on the stack.  */
  99 #define TRANSFER_FROM_TRAMPOLINE NETBSD_ENABLE_EXECUTE_STACK
 100
 101 #undef TARGET_VERSION
 102 #define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME);
 103
 104 /*
 105  * Clean up afterwards generic SPARC ELF configuration.
 106  */
 107
 108 /* FIXME: Aren't these supposed to be available for SPARC ELF?  */
 109 #undef MULDI3_LIBCALL
 110 #undef DIVDI3_LIBCALL
 111 #undef UDIVDI3_LIBCALL
 112 #undef MODDI3_LIBCALL
 113 #undef UMODDI3_LIBCALL
 114 #undef INIT_SUBTARGET_OPTABS
 115 #define INIT_SUBTARGET_OPTABS
 116
 117 /* Below here exists the merged NetBSD/sparc & NetBSD/sparc64 compiler
 118    description, allowing one to build 32 bit or 64 bit applications
 119    on either.  We define the sparc & sparc64 versions of things,
 120    occasionally a neutral version (should be the same as "netbsd-elf.h")
 121    and then based on SPARC_BI_ARCH, DEFAULT_ARCH32_P, and TARGET_CPU_DEFAULT,
 122    we choose the correct version.  */
 123
 124 /* We use the default NetBSD ELF STARTFILE_SPEC and ENDFILE_SPEC
 125    definitions, even for the SPARC_BI_ARCH compiler, because NetBSD does
 126    not have a default place to find these libraries..  */
 127
 128 /* Name the port(s).  */
 129 #define TARGET_NAME64     "NetBSD/sparc64 ELF"
 130 #define TARGET_NAME32     "NetBSD/sparc ELF"
 131
 132 /* TARGET_CPU_DEFAULT is set in Makefile.in.  We test for 64-bit default
 133    platform here.  */
 134
 135 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 136  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 137 /* A 64 bit v9 compiler with stack-bias,
 138    in a Medium/Low code model environment.  */
 139
 140 #undef TARGET_DEFAULT
 141 #define TARGET_DEFAULT \
 142   (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
 143    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
 144
 145 #undef SPARC_DEFAULT_CMODEL
 146 #define SPARC_DEFAULT_CMODEL CM_MEDANY
 147
 148 #endif
 149
 150 /* CC1_SPEC for NetBSD/sparc.  */
 151 #define CC1_SPEC32 \
 152  "%{sun4:} %{target:} \
 153   %{mcypress:-mcpu=cypress} \
 154   %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
 155   %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
 156   %{m32:%{m64:%emay not use both -m32 and -m64}} \
 157   %{m64: \
 158     -mptr64 -mstack-bias -mno-v8plus -mlong-double-128 \
 159     %{!mcpu*: \
 160       %{!mcypress: \
 161         %{!msparclite: \
 162           %{!mf930: \
 163             %{!mf934: \
 164               %{!mv8*: \
 165                 %{!msupersparc:-mcpu=ultrasparc}}}}}}} \
 166     %{!mno-vis:%{!mcpu=v9:-mvis}} \
 167     %{p:-mcmodel=medlow} \
 168     %{pg:-mcmodel=medlow}}"
 169
 170 #define CC1_SPEC64 \
 171  "%{sun4:} %{target:} \
 172   %{mcypress:-mcpu=cypress} \
 173   %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
 174   %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
 175   %{m32:%{m64:%emay not use both -m32 and -m64}} \
 176   %{m32: \
 177     -mptr32 -mno-stack-bias \
 178     %{!mlong-double-128:-mlong-double-64} \
 179     %{!mcpu*: \
 180       %{!mcypress: \
 181         %{!msparclite: \
 182           %{!mf930: \
 183             %{!mf934: \
 184               %{!mv8*: \
 185                 %{!msupersparc:-mcpu=cypress}}}}}}}} \
 186   %{!m32: \
 187     %{p:-mcmodel=medlow} \
 188     %{pg:-mcmodel=medlow}}"
 189
 190 /* Make sure we use the right output format.  Pick a default and then
 191    make sure -m32/-m64 switch to the right one.  */
 192
 193 #define LINK_ARCH32_SPEC "-m elf32_sparc"
 194
 195 #define LINK_ARCH64_SPEC "-m elf64_sparc"
 196
 197 #define LINK_ARCH_SPEC \
 198  "%{m32:%(link_arch32)} \
 199   %{m64:%(link_arch64)} \
 200   %{!m32:%{!m64:%(link_arch_default)}}"
 201
 202 #undef LINK_SPEC
 203 #define LINK_SPEC \
 204  "%(link_arch) \
 205   %{!mno-relax:%{!r:-relax}} \
 206   %(netbsd_link_spec)"
 207
 208 #define NETBSD_ENTRY_POINT "__start"
 209
 210 #if DEFAULT_ARCH32_P
 211 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH32_SPEC
 212 #else
 213 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH64_SPEC
 214 #endif
 215
 216 /* What extra spec entries do we need?  */
 217 #undef SUBTARGET_EXTRA_SPECS
 218 #define SUBTARGET_EXTRA_SPECS \
 219   { "link_arch32",              LINK_ARCH32_SPEC }, \
 220   { "link_arch64",              LINK_ARCH64_SPEC }, \
 221   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC }, \
 222   { "link_arch",                LINK_ARCH_SPEC }, \
 223   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC }, \
 224   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF }, \
 225   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 226
 227
 228 /* What extra switches do we need?  */
 229 #undef  SUBTARGET_SWITCHES
 230 #define SUBTARGET_SWITCHES \
 231   {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
 232   {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
 233
 234
 235 /* Build a compiler that supports -m32 and -m64?  */
 236
 237 #ifdef SPARC_BI_ARCH
 238
 239 #undef LONG_DOUBLE_TYPE_SIZE
 240 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 241
 242 #undef MAX_LONG_DOUBLE_TYPE_SIZE
 243 #define MAX_LONG_DOUBLE_TYPE_SIZE 128
 244
 245 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
 246 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 247 #else
 248 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 249 #endif
 250
 251 #undef  CC1_SPEC
 252 #if DEFAULT_ARCH32_P
 253 #define CC1_SPEC CC1_SPEC32
 254 #else
 255 #define CC1_SPEC CC1_SPEC64
 256 #endif
 257
 258 #if DEFAULT_ARCH32_P
 259 #define MULTILIB_DEFAULTS { "m32" }
 260 #else
 261 #define MULTILIB_DEFAULTS { "m64" }
 262 #endif
 263
 264 /* Name the port. */
 265 #undef TARGET_NAME
 266 #define TARGET_NAME     (DEFAULT_ARCH32_P ? TARGET_NAME32 : TARGET_NAME64)
 267
 268 #else   /* SPARC_BI_ARCH */
 269
 270 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 271  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 272
 273 #undef LONG_DOUBLE_TYPE_SIZE
 274 #define LONG_DOUBLE_TYPE_SIZE 128
 275
 276 #undef MAX_LONG_DOUBLE_TYPE_SIZE
 277 #define MAX_LONG_DOUBLE_TYPE_SIZE 128
 278
 279 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 280 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 281
 282 #undef  CC1_SPEC
 283 #define CC1_SPEC CC1_SPEC64
 284
 285 #undef TARGET_NAME
 286 #define TARGET_NAME     TARGET_NAME64
 287
 288 #else   /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 289         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 290
 291 /* A 32-bit only compiler.  NetBSD don't support 128 bit `long double'
 292    for 32-bit code, unlike Solaris.  */
 293
 294 #undef LONG_DOUBLE_TYPE_SIZE
 295 #define LONG_DOUBLE_TYPE_SIZE 64
 296
 297 #undef MAX_LONG_DOUBLE_TYPE_SIZE
 298 #define MAX_LONG_DOUBLE_TYPE_SIZE 64
 299
 300 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 301 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 302
 303 #undef  CC1_SPEC
 304 #define CC1_SPEC CC1_SPEC32
 305
 306 #undef TARGET_NAME
 307 #define TARGET_NAME     TARGET_NAME32
 308
 309 #endif  /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 310         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 311
 312 #endif  /* SPARC_BI_ARCH */
 313
 314 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 315 #undef CTORS_SECTION_ASM_OP
 316 #undef DTORS_SECTION_ASM_OP