gcc/config/sparc/sol2.h

   1 /* Definitions of target machine for GCC, for SPARC running Solaris 2
   2    Copyright 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005,
   3    2006, 2007, 2008, 2010, 2011 Free Software Foundation, Inc.
   4    Contributed by Ron Guilmette (rfg@netcom.com).
   5    Additional changes by David V. Henkel-Wallace (gumby@cygnus.com).
   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 /* Solaris allows 64-bit out and global registers to be used in 32-bit mode.
  24    sparc_override_options will disable V8+ if either not generating V9 code
  25    or generating 64-bit code.  */
  26 #undef TARGET_DEFAULT
  27 #ifdef TARGET_64BIT_DEFAULT
  28 #define TARGET_DEFAULT \
  29   (MASK_V9 + MASK_64BIT + MASK_PTR64 + MASK_STACK_BIAS + \
  30    MASK_V8PLUS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
  31 #else
  32 #define TARGET_DEFAULT \
  33   (MASK_V8PLUS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
  34 #endif
  35
  36 /* The default code model used to be CM_MEDANY on Solaris
  37    but even Sun eventually found it to be quite wasteful
  38    and changed it to CM_MEDMID in the Studio 9 compiler.  */
  39 #undef SPARC_DEFAULT_CMODEL
  40 #define SPARC_DEFAULT_CMODEL CM_MEDMID
  41
  42 /* Select a format to encode pointers in exception handling data.  CODE
  43    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
  44    true if the symbol may be affected by dynamic relocations.
  45
  46    Some Solaris dynamic linkers don't handle unaligned section relative
  47    relocs properly, so force them to be aligned.  */
  48 #ifndef HAVE_AS_SPARC_UA_PCREL
  49 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \
  50   ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
  51 #endif
  52
  53 \f
  54
  55 /* Supposedly the same as vanilla sparc svr4, except for the stuff below: */
  56
  57 /* This is here rather than in sparc.h because it's not known what
  58    other assemblers will accept.  */
  59
  60 #ifndef USE_GAS
  61 #define AS_SPARC64_FLAG "-xarch=v9"
  62 #else
  63 #define AS_SPARC64_FLAG "-TSO -64 -Av9"
  64 #endif
  65
  66 #undef ASM_CPU32_DEFAULT_SPEC
  67 #define ASM_CPU32_DEFAULT_SPEC  ""
  68 #undef ASM_CPU64_DEFAULT_SPEC
  69 #define ASM_CPU64_DEFAULT_SPEC  AS_SPARC64_FLAG
  70
  71 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9
  72 #undef CPP_CPU64_DEFAULT_SPEC
  73 #define CPP_CPU64_DEFAULT_SPEC ""
  74 #undef ASM_CPU32_DEFAULT_SPEC
  75 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plus"
  76 #undef ASM_CPU_DEFAULT_SPEC
  77 #define ASM_CPU_DEFAULT_SPEC ASM_CPU32_DEFAULT_SPEC
  78 #endif
  79
  80 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
  81 #undef CPP_CPU64_DEFAULT_SPEC
  82 #define CPP_CPU64_DEFAULT_SPEC ""
  83 #undef ASM_CPU32_DEFAULT_SPEC
  84 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusa"
  85 #undef ASM_CPU64_DEFAULT_SPEC
  86 #define ASM_CPU64_DEFAULT_SPEC AS_SPARC64_FLAG "a"
  87 #undef ASM_CPU_DEFAULT_SPEC
  88 #define ASM_CPU_DEFAULT_SPEC ASM_CPU32_DEFAULT_SPEC
  89 #endif
  90
  91 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3
  92 #undef CPP_CPU64_DEFAULT_SPEC
  93 #define CPP_CPU64_DEFAULT_SPEC ""
  94 #undef ASM_CPU32_DEFAULT_SPEC
  95 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusb"
  96 #undef ASM_CPU64_DEFAULT_SPEC
  97 #define ASM_CPU64_DEFAULT_SPEC AS_SPARC64_FLAG "b"
  98 #undef ASM_CPU_DEFAULT_SPEC
  99 #define ASM_CPU_DEFAULT_SPEC ASM_CPU32_DEFAULT_SPEC
 100 #endif
 101
 102 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara
 103 #undef CPP_CPU64_DEFAULT_SPEC
 104 #define CPP_CPU64_DEFAULT_SPEC ""
 105 #undef ASM_CPU32_DEFAULT_SPEC
 106 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusb"
 107 #undef ASM_CPU64_DEFAULT_SPEC
 108 #define ASM_CPU64_DEFAULT_SPEC AS_SPARC64_FLAG "b"
 109 #undef ASM_CPU_DEFAULT_SPEC
 110 #define ASM_CPU_DEFAULT_SPEC ASM_CPU32_DEFAULT_SPEC
 111 #endif
 112
 113 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara2
 114 #undef CPP_CPU64_DEFAULT_SPEC
 115 #define CPP_CPU64_DEFAULT_SPEC ""
 116 #undef ASM_CPU32_DEFAULT_SPEC
 117 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusb"
 118 #undef ASM_CPU64_DEFAULT_SPEC
 119 #define ASM_CPU64_DEFAULT_SPEC AS_SPARC64_FLAG "b"
 120 #undef ASM_CPU_DEFAULT_SPEC
 121 #define ASM_CPU_DEFAULT_SPEC ASM_CPU32_DEFAULT_SPEC
 122 #endif
 123
 124 /* Both Sun as and GNU as understand -K PIC.  */
 125 #undef ASM_SPEC
 126 #define ASM_SPEC ASM_SPEC_BASE ASM_PIC_SPEC
 127
 128 #undef CPP_CPU_SPEC
 129 #define CPP_CPU_SPEC "\
 130 %{mcpu=sparclet|mcpu=tsc701:-D__sparclet__} \
 131 %{mcpu=sparclite|mcpu-f930|mcpu=f934:-D__sparclite__} \
 132 %{mcpu=v8:" DEF_ARCH32_SPEC("-D__sparcv8") "} \
 133 %{mcpu=supersparc:-D__supersparc__ " DEF_ARCH32_SPEC("-D__sparcv8") "} \
 134 %{mcpu=v9|mcpu=ultrasparc|mcpu=ultrasparc3|mcpu=niagara|mcpu=niagara2:" DEF_ARCH32_SPEC("-D__sparcv8") "} \
 135 %{!mcpu*:%(cpp_cpu_default)} \
 136 "
 137
 138 #undef CPP_CPU_DEFAULT_SPEC
 139 #define CPP_CPU_DEFAULT_SPEC \
 140 (DEFAULT_ARCH32_P ? "\
 141 %{m64:" CPP_CPU64_DEFAULT_SPEC "} \
 142 %{!m64:" CPP_CPU32_DEFAULT_SPEC "} \
 143 " : "\
 144 %{m32:" CPP_CPU32_DEFAULT_SPEC "} \
 145 %{!m32:" CPP_CPU64_DEFAULT_SPEC "} \
 146 ")
 147
 148 #undef CPP_ARCH32_SPEC
 149 #define CPP_ARCH32_SPEC ""
 150 #undef CPP_ARCH64_SPEC
 151 #define CPP_ARCH64_SPEC "-D__arch64__ -D__sparcv9"
 152
 153 #undef CPP_ARCH_SPEC
 154 #define CPP_ARCH_SPEC "\
 155 %{m32:%(cpp_arch32)} \
 156 %{m64:%(cpp_arch64)} \
 157 %{!m32:%{!m64:%(cpp_arch_default)}} \
 158 "
 159
 160 /* -mcpu=native handling only makes sense with compiler running on
 161    a SPARC chip.  */
 162 #if defined(__sparc__)
 163 extern const char *host_detect_local_cpu (int argc, const char **argv);
 164 # define EXTRA_SPEC_FUNCTIONS                                           \
 165   { "local_cpu_detect", host_detect_local_cpu },
 166
 167 # define MCPU_MTUNE_NATIVE_SPECS                                        \
 168    " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}"              \
 169    " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
 170 #else
 171 # define MCPU_MTUNE_NATIVE_SPECS ""
 172 #endif
 173
 174 #define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
 175
 176 #undef  CC1_SPEC
 177 #if DEFAULT_ARCH32_P
 178 #define CC1_SPEC "\
 179 %{m64:%{m32:%emay not use both -m32 and -m64}} \
 180 %{m64:-mptr64 -mstack-bias -mno-v8plus \
 181   %{!mcpu*:-%{!mv8plus:mcpu=v9}}} \
 182 "
 183 #else
 184 #define CC1_SPEC "\
 185 %{m32:%{m64:%emay not use both -m32 and -m64}} \
 186 %{m32:-mptr32 -mno-stack-bias \
 187   %{!mcpu*:%{!mv8plus:-mcpu=v9}}} \
 188 %{mv8plus:-m32 -mptr32 -mno-stack-bias \
 189   %{!mcpu*:-mcpu=v9}} \
 190 "
 191 #endif
 192
 193 /* Support for a compile-time default CPU, et cetera.  The rules are:
 194    --with-cpu is ignored if -mcpu is specified.
 195    --with-tune is ignored if -mtune is specified.
 196    --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu
 197      are specified.
 198    In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)}
 199    here, otherwise say -mcpu=v7 would be passed even when -m64.
 200    CC1_SPEC above takes care of this instead.  */
 201 #undef OPTION_DEFAULT_SPECS
 202 #if DEFAULT_ARCH32_P
 203 #define OPTION_DEFAULT_SPECS \
 204   {"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
 205   {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
 206   {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
 207 #else
 208 #define OPTION_DEFAULT_SPECS \
 209   {"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
 210   {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
 211   {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
 212 #endif
 213
 214 #undef ASM_CPU_SPEC
 215 #define ASM_CPU_SPEC "\
 216 %{mcpu=v9:" DEF_ARCH32_SPEC("-xarch=v8plus") DEF_ARCH64_SPEC(AS_SPARC64_FLAG) "} \
 217 %{mcpu=ultrasparc:" DEF_ARCH32_SPEC("-xarch=v8plusa") DEF_ARCH64_SPEC(AS_SPARC64_FLAG "a") "} \
 218 %{mcpu=ultrasparc3:" DEF_ARCH32_SPEC("-xarch=v8plusb") DEF_ARCH64_SPEC(AS_SPARC64_FLAG "b") "} \
 219 %{mcpu=niagara:" DEF_ARCH32_SPEC("-xarch=v8plusb") DEF_ARCH64_SPEC(AS_SPARC64_FLAG "b") "} \
 220 %{mcpu=niagara2:" DEF_ARCH32_SPEC("-xarch=v8plusb") DEF_ARCH64_SPEC(AS_SPARC64_FLAG "b") "} \
 221 %{!mcpu=niagara2:%{!mcpu=niagara:%{!mcpu=ultrasparc3:%{!mcpu=ultrasparc:%{!mcpu=v9:%{mcpu*:" DEF_ARCH32_SPEC("-xarch=v8") DEF_ARCH64_SPEC(AS_SPARC64_FLAG) "}}}}}} \
 222 %{!mcpu*:%(asm_cpu_default)} \
 223 "
 224
 225 #undef ASM_ARCH32_SPEC
 226 #define ASM_ARCH32_SPEC ""
 227
 228 #undef ASM_ARCH64_SPEC
 229 #define ASM_ARCH64_SPEC ""
 230
 231 #undef ASM_ARCH_DEFAULT_SPEC
 232 #define ASM_ARCH_DEFAULT_SPEC ""
 233
 234 #undef ASM_ARCH_SPEC
 235 #define ASM_ARCH_SPEC ""
 236
 237 #ifdef USE_GLD
 238 /* Since binutils 2.21, GNU ld supports new *_sol2 emulations to strictly
 239    follow the Solaris 2 ABI.  Prefer them if present.  */
 240 #ifdef HAVE_LD_SOL2_EMULATION
 241 #define ARCH32_EMULATION "elf32_sparc_sol2"
 242 #define ARCH64_EMULATION "elf64_sparc_sol2"
 243 #else
 244 #define ARCH32_EMULATION "elf32_sparc"
 245 #define ARCH64_EMULATION "elf64_sparc"
 246 #endif
 247 #endif
 248
 249 #define ARCH64_SUBDIR "sparcv9"
 250
 251 #define SUBTARGET_CPU_EXTRA_SPECS
 252
 253 \f
 254
 255 /* Register the Solaris-specific #pragma directives.  */
 256 #define REGISTER_TARGET_PRAGMAS() solaris_register_pragmas ()
 257
 258 #if defined(USE_GAS) && defined(HAVE_AS_TLS)
 259 /* Use GNU extensions to TLS support.  */
 260 #undef TARGET_SUN_TLS
 261 #undef TARGET_GNU_TLS
 262 #define TARGET_SUN_TLS 0
 263 #define TARGET_GNU_TLS 1
 264 #endif
 265
 266 #undef  LOCAL_LABEL_PREFIX
 267 #define LOCAL_LABEL_PREFIX  "."
 268
 269 /* The Solaris 2 assembler uses .skip, not .zero, so put this back.  */
 270 #undef ASM_OUTPUT_SKIP
 271 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 272   fprintf (FILE, "\t.skip %u\n", (int)(SIZE))
 273
 274 /* This is how to store into the string LABEL
 275    the symbol_ref name of an internal numbered label where
 276    PREFIX is the class of label and NUM is the number within the class.
 277    This is suitable for output with `assemble_name'.  */
 278
 279 #undef  ASM_GENERATE_INTERNAL_LABEL
 280 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 281   sprintf ((LABEL), "*.L%s%lu", (PREFIX), (unsigned long)(NUM))
 282
 283 /* The native TLS-enabled assembler requires the directive #tls_object
 284    to be put on objects in TLS sections (as of v7.1).  This is not
 285    required by GNU as but supported on SPARC.  */
 286 #undef  ASM_DECLARE_OBJECT_NAME
 287 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
 288   do                                                            \
 289     {                                                           \
 290       HOST_WIDE_INT size;                                       \
 291                                                                 \
 292       if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \
 293         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_object");   \
 294       else                                                      \
 295         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
 296                                                                 \
 297       size_directive_output = 0;                                \
 298       if (!flag_inhibit_size_directive                          \
 299           && (DECL) && DECL_SIZE (DECL))                        \
 300         {                                                       \
 301           size_directive_output = 1;                            \
 302           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 303           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 304         }                                                       \
 305                                                                 \
 306       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 307     }                                                           \
 308   while (0)
 309
 310 /* Output a simple call for .init/.fini.  */
 311 #define ASM_OUTPUT_CALL(FILE, FN)                                       \
 312   do                                                                    \
 313     {                                                                   \
 314       fprintf (FILE, "\tcall\t");                                       \
 315       targetm.asm_out.print_operand (FILE, XEXP (DECL_RTL (FN), 0), 0); \
 316       fprintf (FILE, "\n\tnop\n");                                      \
 317     }                                                                   \
 318   while (0)
 319
 320 #ifndef USE_GAS
 321 /* This is how to output an assembler line that says to advance
 322    the location counter to a multiple of 2**LOG bytes using the
 323    NOP instruction as padding.  The filler pattern doesn't work
 324    with GNU as. */
 325 #define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG)   \
 326   if ((LOG) != 0)                             \
 327     fprintf (FILE, "\t.align %d,0x1000000\n", (1<<(LOG)))
 328
 329 /* Use Solaris ELF section syntax with Sun as.  */
 330 #undef TARGET_ASM_NAMED_SECTION
 331 #define TARGET_ASM_NAMED_SECTION sparc_solaris_elf_asm_named_section
 332
 333 /* Sun as requires doublequoted section names on SPARC.  While GNU as
 334    supports that, too, we prefer the standard variant.  */
 335 #undef SECTION_NAME_FORMAT
 336 #define SECTION_NAME_FORMAT     "\"%s\""
 337 #endif /* !USE_GAS */
 338
 339 /* Undefine this so that attribute((init_priority)) works with GNU ld.  */
 340 #ifdef USE_GLD
 341 #undef CTORS_SECTION_ASM_OP
 342 #undef DTORS_SECTION_ASM_OP
 343 #endif
 344
 345 \f
 346
 347 /* Define for support of TFmode long double.
 348    SPARC ABI says that long double is 4 words.  */
 349 #define LONG_DOUBLE_TYPE_SIZE 128
 350
 351 /* Solaris's _Qp_* library routine implementation clobbers the output
 352    memory before the inputs are fully consumed.  */
 353
 354 #undef TARGET_BUGGY_QP_LIB
 355 #define TARGET_BUGGY_QP_LIB     1
 356
 357 #undef SUN_CONVERSION_LIBFUNCS
 358 #define SUN_CONVERSION_LIBFUNCS 1
 359
 360 #undef DITF_CONVERSION_LIBFUNCS
 361 #define DITF_CONVERSION_LIBFUNCS 1
 362
 363 #undef SUN_INTEGER_MULTIPLY_64
 364 #define SUN_INTEGER_MULTIPLY_64 1