gcc/config/sparc/sol2.h

   1 /* Definitions of target machine for GCC, for SPARC running Solaris 2
   2    Copyright (C) 1992-2014 Free Software Foundation, Inc.
   3    Contributed by Ron Guilmette (rfg@netcom.com).
   4    Additional changes by David V. Henkel-Wallace (gumby@cygnus.com).
   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 3, 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 COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* Solaris allows 64-bit out and global registers to be used in 32-bit mode.
  23    sparc_override_options will disable V8+ if either not generating V9 code
  24    or generating 64-bit code.  */
  25 #undef TARGET_DEFAULT
  26 #ifdef TARGET_64BIT_DEFAULT
  27 #define TARGET_DEFAULT \
  28   (MASK_V9 + MASK_64BIT + MASK_PTR64 + MASK_STACK_BIAS + \
  29    MASK_V8PLUS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
  30 #else
  31 #define TARGET_DEFAULT \
  32   (MASK_V8PLUS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
  33 #endif
  34
  35 /* The default code model used to be CM_MEDANY on Solaris
  36    but even Sun eventually found it to be quite wasteful
  37    and changed it to CM_MEDMID in the Studio 9 compiler.  */
  38 #undef SPARC_DEFAULT_CMODEL
  39 #define SPARC_DEFAULT_CMODEL CM_MEDMID
  40
  41 /* Select a format to encode pointers in exception handling data.  CODE
  42    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
  43    true if the symbol may be affected by dynamic relocations.
  44
  45    Some Solaris dynamic linkers don't handle unaligned section relative
  46    relocs properly, so force them to be aligned.  */
  47 #ifndef HAVE_AS_SPARC_UA_PCREL
  48 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \
  49   ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
  50 #endif
  51
  52 \f
  53
  54 /* Supposedly the same as vanilla sparc svr4, except for the stuff below: */
  55
  56 /* If the assembler supports -xarch=sparc4, we switch to the explicit
  57    word size selection mechanism available both in GNU as and Sun as,
  58    for the Niagara4 and above configurations.  */
  59 #ifdef HAVE_AS_SPARC4
  60
  61 #define AS_SPARC32_FLAG ""
  62 #define AS_SPARC64_FLAG ""
  63
  64 #ifndef USE_GAS
  65 #undef ASM_ARCH32_SPEC
  66 #define ASM_ARCH32_SPEC "-m32"
  67 #undef ASM_ARCH64_SPEC
  68 #define ASM_ARCH64_SPEC "-m64"
  69 #endif
  70
  71 /* Both Sun as and GNU as understand -K PIC.  */
  72 #undef ASM_SPEC
  73 #define ASM_SPEC ASM_SPEC_BASE " %(asm_arch)" ASM_PIC_SPEC
  74
  75 #else /* HAVE_AS_SPARC4 */
  76
  77 #define AS_SPARC32_FLAG "-xarch=v8plus"
  78 #define AS_SPARC64_FLAG "-xarch=v9"
  79
  80 #undef AS_NIAGARA4_FLAG
  81 #define AS_NIAGARA4_FLAG AS_NIAGARA3_FLAG
  82
  83 #undef ASM_ARCH32_SPEC
  84 #define ASM_ARCH32_SPEC ""
  85
  86 #undef ASM_ARCH64_SPEC
  87 #define ASM_ARCH64_SPEC ""
  88
  89 #undef ASM_ARCH_DEFAULT_SPEC
  90 #define ASM_ARCH_DEFAULT_SPEC ""
  91
  92 #undef ASM_ARCH_SPEC
  93 #define ASM_ARCH_SPEC ""
  94
  95 /* Both Sun as and GNU as understand -K PIC.  */
  96 #undef ASM_SPEC
  97 #define ASM_SPEC ASM_SPEC_BASE ASM_PIC_SPEC
  98
  99 #endif /* HAVE_AS_SPARC4 */
 100
 101
 102 #undef ASM_CPU32_DEFAULT_SPEC
 103 #define ASM_CPU32_DEFAULT_SPEC  ""
 104 #undef ASM_CPU64_DEFAULT_SPEC
 105 #define ASM_CPU64_DEFAULT_SPEC  "-xarch=v9"
 106
 107 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9
 108 #undef CPP_CPU64_DEFAULT_SPEC
 109 #define CPP_CPU64_DEFAULT_SPEC ""
 110 #undef ASM_CPU32_DEFAULT_SPEC
 111 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plus"
 112 #endif
 113
 114 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 115 #undef CPP_CPU64_DEFAULT_SPEC
 116 #define CPP_CPU64_DEFAULT_SPEC ""
 117 #undef ASM_CPU32_DEFAULT_SPEC
 118 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusa"
 119 #undef ASM_CPU64_DEFAULT_SPEC
 120 #define ASM_CPU64_DEFAULT_SPEC "-xarch=v9a"
 121 #endif
 122
 123 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3
 124 #undef CPP_CPU64_DEFAULT_SPEC
 125 #define CPP_CPU64_DEFAULT_SPEC ""
 126 #undef ASM_CPU32_DEFAULT_SPEC
 127 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusb"
 128 #undef ASM_CPU64_DEFAULT_SPEC
 129 #define ASM_CPU64_DEFAULT_SPEC "-xarch=v9b"
 130 #endif
 131
 132 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara
 133 #undef CPP_CPU64_DEFAULT_SPEC
 134 #define CPP_CPU64_DEFAULT_SPEC ""
 135 #undef ASM_CPU32_DEFAULT_SPEC
 136 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusb"
 137 #undef ASM_CPU64_DEFAULT_SPEC
 138 #define ASM_CPU64_DEFAULT_SPEC "-xarch=v9b"
 139 #endif
 140
 141 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara2
 142 #undef CPP_CPU64_DEFAULT_SPEC
 143 #define CPP_CPU64_DEFAULT_SPEC ""
 144 #undef ASM_CPU32_DEFAULT_SPEC
 145 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plusb"
 146 #undef ASM_CPU64_DEFAULT_SPEC
 147 #define ASM_CPU64_DEFAULT_SPEC "-xarch=v9b"
 148 #endif
 149
 150 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara3
 151 #undef CPP_CPU64_DEFAULT_SPEC
 152 #define CPP_CPU64_DEFAULT_SPEC ""
 153 #undef ASM_CPU32_DEFAULT_SPEC
 154 #define ASM_CPU32_DEFAULT_SPEC "-xarch=v8plus" AS_NIAGARA3_FLAG
 155 #undef ASM_CPU64_DEFAULT_SPEC
 156 #define ASM_CPU64_DEFAULT_SPEC "-xarch=v9" AS_NIAGARA3_FLAG
 157 #endif
 158
 159 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara4
 160 #undef CPP_CPU64_DEFAULT_SPEC
 161 #define CPP_CPU64_DEFAULT_SPEC ""
 162 #undef ASM_CPU32_DEFAULT_SPEC
 163 #define ASM_CPU32_DEFAULT_SPEC AS_SPARC32_FLAG AS_NIAGARA4_FLAG
 164 #undef ASM_CPU64_DEFAULT_SPEC
 165 #define ASM_CPU64_DEFAULT_SPEC AS_SPARC64_FLAG AS_NIAGARA4_FLAG
 166 #endif
 167
 168 #undef CPP_CPU_SPEC
 169 #define CPP_CPU_SPEC "\
 170 %{mcpu=sparclet|mcpu=tsc701:-D__sparclet__} \
 171 %{mcpu=sparclite|mcpu-f930|mcpu=f934:-D__sparclite__} \
 172 %{mcpu=v8:" DEF_ARCH32_SPEC("-D__sparcv8") "} \
 173 %{mcpu=supersparc:-D__supersparc__ " DEF_ARCH32_SPEC("-D__sparcv8") "} \
 174 %{mcpu=v9|mcpu=ultrasparc|mcpu=ultrasparc3|mcpu=niagara|mcpu=niagara2|mcpu=niagara3|mcpu=niagara4:" DEF_ARCH32_SPEC("-D__sparcv8") "} \
 175 %{!mcpu*:%(cpp_cpu_default)} \
 176 "
 177
 178 #undef CPP_CPU_DEFAULT_SPEC
 179 #define CPP_CPU_DEFAULT_SPEC \
 180 (DEFAULT_ARCH32_P ? "\
 181 %{m64:" CPP_CPU64_DEFAULT_SPEC "} \
 182 %{!m64:" CPP_CPU32_DEFAULT_SPEC "} \
 183 " : "\
 184 %{m32:" CPP_CPU32_DEFAULT_SPEC "} \
 185 %{!m32:" CPP_CPU64_DEFAULT_SPEC "} \
 186 ")
 187
 188 #undef CPP_ARCH32_SPEC
 189 #define CPP_ARCH32_SPEC ""
 190 #undef CPP_ARCH64_SPEC
 191 #define CPP_ARCH64_SPEC "-D__arch64__ -D__sparcv9"
 192
 193 #undef CPP_ARCH_SPEC
 194 #define CPP_ARCH_SPEC "\
 195 %{m32:%(cpp_arch32)} \
 196 %{m64:%(cpp_arch64)} \
 197 %{!m32:%{!m64:%(cpp_arch_default)}} \
 198 "
 199
 200 /* -mcpu=native handling only makes sense with compiler running on
 201    a SPARC chip.  */
 202 #if defined(__sparc__) && defined(__SVR4)
 203 extern const char *host_detect_local_cpu (int argc, const char **argv);
 204 # define EXTRA_SPEC_FUNCTIONS                                           \
 205   { "local_cpu_detect", host_detect_local_cpu },
 206
 207 # define MCPU_MTUNE_NATIVE_SPECS                                        \
 208    " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}"              \
 209    " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
 210 #else
 211 # define MCPU_MTUNE_NATIVE_SPECS ""
 212 #endif
 213
 214 #define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
 215
 216 #undef  CC1_SPEC
 217 #if DEFAULT_ARCH32_P
 218 #define CC1_SPEC "\
 219 %{m64:%{m32:%emay not use both -m32 and -m64}} \
 220 %{m64:-mptr64 -mstack-bias -mno-v8plus \
 221   %{!mcpu*:-%{!mv8plus:mcpu=v9}}} \
 222 "
 223 #else
 224 #define CC1_SPEC "\
 225 %{m32:%{m64:%emay not use both -m32 and -m64}} \
 226 %{m32:-mptr32 -mno-stack-bias \
 227   %{!mcpu*:%{!mv8plus:-mcpu=v9}}} \
 228 %{mv8plus:-m32 -mptr32 -mno-stack-bias \
 229   %{!mcpu*:-mcpu=v9}} \
 230 "
 231 #endif
 232
 233 /* Support for a compile-time default CPU, et cetera.  The rules are:
 234    --with-cpu is ignored if -mcpu is specified.
 235    --with-tune is ignored if -mtune is specified.
 236    --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu
 237      are specified.
 238    In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)}
 239    here, otherwise say -mcpu=v7 would be passed even when -m64.
 240    CC1_SPEC above takes care of this instead.  */
 241 #undef OPTION_DEFAULT_SPECS
 242 #if DEFAULT_ARCH32_P
 243 #define OPTION_DEFAULT_SPECS \
 244   {"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
 245   {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
 246   {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
 247 #else
 248 #define OPTION_DEFAULT_SPECS \
 249   {"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
 250   {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
 251   {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
 252 #endif
 253
 254 #undef ASM_CPU_SPEC
 255 #define ASM_CPU_SPEC "\
 256 %{mcpu=v9:" DEF_ARCH32_SPEC("-xarch=v8plus") DEF_ARCH64_SPEC("-xarch=v9") "} \
 257 %{mcpu=ultrasparc:" DEF_ARCH32_SPEC("-xarch=v8plusa") DEF_ARCH64_SPEC("-xarch=v9a") "} \
 258 %{mcpu=ultrasparc3:" DEF_ARCH32_SPEC("-xarch=v8plusb") DEF_ARCH64_SPEC("-xarch=v9b") "} \
 259 %{mcpu=niagara:" DEF_ARCH32_SPEC("-xarch=v8plusb") DEF_ARCH64_SPEC("-xarch=v9b") "} \
 260 %{mcpu=niagara2:" DEF_ARCH32_SPEC("-xarch=v8plusb") DEF_ARCH64_SPEC("-xarch=v9b") "} \
 261 %{mcpu=niagara3:" DEF_ARCH32_SPEC("-xarch=v8plus" AS_NIAGARA3_FLAG) DEF_ARCH64_SPEC("-xarch=v9" AS_NIAGARA3_FLAG) "} \
 262 %{mcpu=niagara4:" DEF_ARCH32_SPEC(AS_SPARC32_FLAG AS_NIAGARA4_FLAG) DEF_ARCH64_SPEC(AS_SPARC64_FLAG AS_NIAGARA4_FLAG) "} \
 263 %{!mcpu=niagara4:%{!mcpu=niagara3:%{!mcpu=niagara2:%{!mcpu=niagara:%{!mcpu=ultrasparc3:%{!mcpu=ultrasparc:%{!mcpu=v9:%{mcpu*:" DEF_ARCH32_SPEC("-xarch=v8") DEF_ARCH64_SPEC("-xarch=v9") "}}}}}}}} \
 264 %{!mcpu*:%(asm_cpu_default)} \
 265 "
 266
 267 #ifdef USE_GLD
 268 /* Since binutils 2.21, GNU ld supports new *_sol2 emulations to strictly
 269    follow the Solaris 2 ABI.  Prefer them if present.  */
 270 #ifdef HAVE_LD_SOL2_EMULATION
 271 #define ARCH32_EMULATION "elf32_sparc_sol2"
 272 #define ARCH64_EMULATION "elf64_sparc_sol2"
 273 #else
 274 #define ARCH32_EMULATION "elf32_sparc"
 275 #define ARCH64_EMULATION "elf64_sparc"
 276 #endif
 277 #endif
 278
 279 #define ARCH64_SUBDIR "sparcv9"
 280
 281 #define SUBTARGET_CPU_EXTRA_SPECS
 282
 283 \f
 284
 285 /* Register the Solaris-specific #pragma directives.  */
 286 #define REGISTER_TARGET_PRAGMAS() solaris_register_pragmas ()
 287
 288 #if defined(USE_GAS) && defined(HAVE_AS_TLS)
 289 /* Use GNU extensions to TLS support.  */
 290 #undef TARGET_SUN_TLS
 291 #undef TARGET_GNU_TLS
 292 #define TARGET_SUN_TLS 0
 293 #define TARGET_GNU_TLS 1
 294 #endif
 295
 296 #undef  LOCAL_LABEL_PREFIX
 297 #define LOCAL_LABEL_PREFIX  "."
 298
 299 /* The Solaris 2 assembler uses .skip, not .zero, so put this back.  */
 300 #undef ASM_OUTPUT_SKIP
 301 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 302   fprintf (FILE, "\t.skip %u\n", (int)(SIZE))
 303
 304 /* This is how to store into the string LABEL
 305    the symbol_ref name of an internal numbered label where
 306    PREFIX is the class of label and NUM is the number within the class.
 307    This is suitable for output with `assemble_name'.  */
 308
 309 #undef  ASM_GENERATE_INTERNAL_LABEL
 310 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 311   sprintf ((LABEL), "*.L%s%lu", (PREFIX), (unsigned long)(NUM))
 312
 313 /* The native TLS-enabled assembler requires the directive #tls_object
 314    to be put on objects in TLS sections (as of v7.1).  This is not
 315    required by GNU as but supported on SPARC.  */
 316 #undef  ASM_DECLARE_OBJECT_NAME
 317 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
 318   do                                                            \
 319     {                                                           \
 320       HOST_WIDE_INT size;                                       \
 321                                                                 \
 322       if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \
 323         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_object");   \
 324       else                                                      \
 325         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
 326                                                                 \
 327       size_directive_output = 0;                                \
 328       if (!flag_inhibit_size_directive                          \
 329           && (DECL) && DECL_SIZE (DECL))                        \
 330         {                                                       \
 331           size_directive_output = 1;                            \
 332           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 333           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 334         }                                                       \
 335                                                                 \
 336       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 337     }                                                           \
 338   while (0)
 339
 340 /* Output a simple call for .init/.fini.  */
 341 #define ASM_OUTPUT_CALL(FILE, FN)                                       \
 342   do                                                                    \
 343     {                                                                   \
 344       fprintf (FILE, "\tcall\t");                                       \
 345       targetm.asm_out.print_operand (FILE, XEXP (DECL_RTL (FN), 0), 0); \
 346       fprintf (FILE, "\n\tnop\n");                                      \
 347     }                                                                   \
 348   while (0)
 349
 350 /* Solaris as has a bug: a .common directive in .tbss or .tdata section
 351    behaves as .tls_common rather than normal non-TLS .common.  */
 352 #undef  ASM_OUTPUT_ALIGNED_COMMON
 353 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
 354   do                                                                    \
 355     {                                                                   \
 356       if (TARGET_SUN_TLS                                                \
 357           && in_section                                                 \
 358           && ((in_section->common.flags & SECTION_TLS) == SECTION_TLS)) \
 359         switch_to_section (bss_section);                                \
 360       fprintf ((FILE), "%s", COMMON_ASM_OP);                            \
 361       assemble_name ((FILE), (NAME));                                   \
 362       fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",          \
 363                (SIZE), (ALIGN) / BITS_PER_UNIT);                        \
 364     }                                                                   \
 365   while (0)
 366
 367 #ifndef USE_GAS
 368 /* This is how to output an assembler line that says to advance
 369    the location counter to a multiple of 2**LOG bytes using the
 370    NOP instruction as padding.  The filler pattern doesn't work
 371    with GNU as. */
 372 #define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG)   \
 373   if ((LOG) != 0)                             \
 374     fprintf (FILE, "\t.align %d,0x1000000\n", (1<<(LOG)))
 375
 376 /* Use Solaris ELF section syntax with Sun as.  */
 377 #undef TARGET_ASM_NAMED_SECTION
 378 #define TARGET_ASM_NAMED_SECTION sparc_solaris_elf_asm_named_section
 379
 380 /* Sun as requires doublequoted section names on SPARC.  While GNU as
 381    supports that, too, we prefer the standard variant.  */
 382 #define SECTION_NAME_FORMAT     "\"%s\""
 383 #endif /* !USE_GAS */
 384
 385 /* Undefine this so that attribute((init_priority)) works with GNU ld.  */
 386 #ifdef USE_GLD
 387 #undef CTORS_SECTION_ASM_OP
 388 #undef DTORS_SECTION_ASM_OP
 389 #endif
 390
 391 \f
 392
 393 /* Define for support of TFmode long double.
 394    SPARC ABI says that long double is 4 words.  */
 395 #define LONG_DOUBLE_TYPE_SIZE 128
 396
 397 /* Solaris's _Qp_* library routine implementation clobbers the output
 398    memory before the inputs are fully consumed.  */
 399
 400 #undef TARGET_BUGGY_QP_LIB
 401 #define TARGET_BUGGY_QP_LIB     1
 402
 403 #undef SUN_CONVERSION_LIBFUNCS
 404 #define SUN_CONVERSION_LIBFUNCS 1
 405
 406 #undef DITF_CONVERSION_LIBFUNCS
 407 #define DITF_CONVERSION_LIBFUNCS 1
 408
 409 #undef SUN_INTEGER_MULTIPLY_64
 410 #define SUN_INTEGER_MULTIPLY_64 1
 411
 412 #undef SPARC_LOW_FE_EXCEPT_VALUES
 413 #define SPARC_LOW_FE_EXCEPT_VALUES 1