gcc/config/sol2.h

   1 /* Operating system specific defines to be used when targeting GCC for any
   2    Solaris 2 system.
   3    Copyright (C) 2002-2014 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* We are compiling for Solaris 2 now.  */
  22 #define TARGET_SOLARIS 1
  23
  24 /* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t.  */
  25 #undef WCHAR_TYPE
  26 #define WCHAR_TYPE "long int"
  27
  28 #undef WCHAR_TYPE_SIZE
  29 #define WCHAR_TYPE_SIZE BITS_PER_WORD
  30
  31 /* Solaris 2 uses a wint_t different from the default. This is required
  32    by the SCD 2.4.1, p. 6-83, Figure 6-66.  */
  33 #undef  WINT_TYPE
  34 #define WINT_TYPE "long int"
  35
  36 #undef  WINT_TYPE_SIZE
  37 #define WINT_TYPE_SIZE BITS_PER_WORD
  38
  39 #define SIG_ATOMIC_TYPE "int"
  40
  41 /* ??? This definition of int8_t follows the system header but does
  42    not conform to C99.  Likewise int_fast8_t, int_least8_t.  */
  43 #define INT8_TYPE "char"
  44 #define INT16_TYPE "short int"
  45 #define INT32_TYPE "int"
  46 #define INT64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  47 #define UINT8_TYPE "unsigned char"
  48 #define UINT16_TYPE "short unsigned int"
  49 #define UINT32_TYPE "unsigned int"
  50 #define UINT64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  51
  52 #define INT_LEAST8_TYPE "char"
  53 #define INT_LEAST16_TYPE "short int"
  54 #define INT_LEAST32_TYPE "int"
  55 #define INT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  56 #define UINT_LEAST8_TYPE "unsigned char"
  57 #define UINT_LEAST16_TYPE "short unsigned int"
  58 #define UINT_LEAST32_TYPE "unsigned int"
  59 #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  60
  61 #define INT_FAST8_TYPE "char"
  62 #define INT_FAST16_TYPE "int"
  63 #define INT_FAST32_TYPE "int"
  64 #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  65 #define UINT_FAST8_TYPE "unsigned char"
  66 #define UINT_FAST16_TYPE "unsigned int"
  67 #define UINT_FAST32_TYPE "unsigned int"
  68 #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  69
  70 #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
  71 #define UINTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
  72
  73 #undef CPP_SUBTARGET_SPEC
  74 #define CPP_SUBTARGET_SPEC "\
  75 %{pthreads|pthread:-D_REENTRANT -D_PTHREADS}"
  76
  77 /* Names to predefine in the preprocessor for this target machine.  */
  78 #define TARGET_SUB_OS_CPP_BUILTINS()
  79 #define TARGET_OS_CPP_BUILTINS()                        \
  80     do {                                                \
  81         builtin_define_std ("unix");                    \
  82         builtin_define_std ("sun");                     \
  83         builtin_define ("__svr4__");                    \
  84         builtin_define ("__SVR4");                      \
  85         builtin_assert ("system=unix");                 \
  86         builtin_assert ("system=svr4");                 \
  87         /* For C++ we need to add some additional macro \
  88            definitions required by the C++ standard     \
  89            library.  */                                 \
  90         if (c_dialect_cxx ())                           \
  91           {                                             \
  92             builtin_define ("__STDC_VERSION__=199901L");\
  93             builtin_define ("_XOPEN_SOURCE=600");       \
  94             builtin_define ("_LARGEFILE_SOURCE=1");     \
  95             builtin_define ("_LARGEFILE64_SOURCE=1");   \
  96             builtin_define ("__EXTENSIONS__");          \
  97           }                                             \
  98         TARGET_SUB_OS_CPP_BUILTINS();                   \
  99     } while (0)
 100
 101 #define SUBTARGET_OVERRIDE_OPTIONS                      \
 102   do {                                                  \
 103     solaris_override_options ();                        \
 104   } while (0)
 105
 106
 107 /* It's safe to pass -s always, even if -g is not used.  Those options are
 108    handled by both Sun as and GNU as.  */
 109 #define ASM_SPEC_BASE \
 110 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{Ym,*} -s %(asm_cpu)"
 111
 112 #define ASM_PIC_SPEC " %{fpic|fpie|fPIC|fPIE:-K PIC}"
 113
 114 #undef LIB_SPEC
 115 #define LIB_SPEC \
 116   "%{!symbolic:\
 117      %{pthreads|pthread:-lpthread} \
 118      %{p|pg:-ldl} -lc}"
 119
 120 #ifndef CROSS_DIRECTORY_STRUCTURE
 121 #undef MD_EXEC_PREFIX
 122 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
 123
 124 #undef MD_STARTFILE_PREFIX
 125 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
 126 #endif
 127
 128 #undef STARTFILE_ARCH32_SPEC
 129 #define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \
 130                             %{!ansi:values-Xa.o%s}"
 131
 132 #undef STARTFILE_ARCH_SPEC
 133 #define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC
 134
 135 /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.  */
 136 #undef STARTFILE_SPEC
 137 #define STARTFILE_SPEC "%{!shared: \
 138                          %{!symbolic: \
 139                           %{p:mcrt1.o%s} \
 140                           %{!p: \
 141                             %{pg:gcrt1.o%s gmon.o%s} \
 142                             %{!pg:crt1.o%s}}}} \
 143                         crti.o%s %(startfile_arch) \
 144                         crtbegin.o%s"
 145
 146 #undef  ENDFILE_SPEC
 147 #define ENDFILE_SPEC \
 148   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 149    crtend.o%s crtn.o%s"
 150
 151 #undef LINK_ARCH32_SPEC_BASE
 152 #define LINK_ARCH32_SPEC_BASE \
 153   "%{G:-G} \
 154    %{YP,*} \
 155    %{R*} \
 156    %{!YP,*:%{p|pg:-Y P,%R/usr/ccs/lib/libp:%R/usr/lib/libp:%R/usr/ccs/lib:%R/lib:%R/usr/lib} \
 157            %{!p:%{!pg:-Y P,%R/usr/ccs/lib:%R/lib:%R/usr/lib}}}"
 158
 159 #undef LINK_ARCH32_SPEC
 160 #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE
 161
 162 #undef LINK_ARCH_SPEC
 163 #define LINK_ARCH_SPEC LINK_ARCH32_SPEC
 164
 165 /* C++11 programs need -lrt for nanosleep.  */
 166 #define TIME_LIBRARY "rt"
 167
 168 #ifndef USE_GLD
 169 /* With Sun ld, -rdynamic is a no-op.  */
 170 #define RDYNAMIC_SPEC ""
 171 #else
 172 /* GNU ld needs --export-dynamic to implement -rdynamic.  */
 173 #define RDYNAMIC_SPEC "--export-dynamic"
 174 #endif
 175
 176 #ifndef USE_GLD
 177 /* With Sun ld, use mapfile to enforce direct binding to libgcc_s unwinder.  */
 178 #define LINK_LIBGCC_MAPFILE_SPEC \
 179   "%{shared|shared-libgcc:-M %slibgcc-unwind.map}"
 180 #else
 181 /* GNU ld doesn't support direct binding.  */
 182 #define LINK_LIBGCC_MAPFILE_SPEC ""
 183 #endif
 184
 185 #undef  LINK_SPEC
 186 #define LINK_SPEC \
 187   "%{h*} %{v:-V} \
 188    %{!shared:%{!static:%{rdynamic: " RDYNAMIC_SPEC "}}} \
 189    %{static:-dn -Bstatic} \
 190    %{shared:-G -dy %{!mimpure-text:-z text}} " LINK_LIBGCC_MAPFILE_SPEC " \
 191    %{symbolic:-Bsymbolic -G -dy -z text} \
 192    %(link_arch) \
 193    %{Qy:} %{!Qn:-Qy}"
 194
 195 /* Use --as-needed/-z ignore -lgcc_s for eh support.  */
 196 #ifdef HAVE_LD_AS_NEEDED
 197 #define USE_LD_AS_NEEDED 1
 198 #endif
 199
 200 #ifdef USE_GLD
 201 /* Solaris 11 build 135+ implements dl_iterate_phdr.  GNU ld needs
 202    --eh-frame-hdr to create the required .eh_frame_hdr sections.  */
 203 #if defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
 204 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
 205 #endif /* HAVE_LD_EH_FRAME && TARGET_DL_ITERATE_PHDR */
 206 #endif
 207
 208 /* collect2.c can only parse GNU nm -n output.  Solaris nm needs -png to
 209    produce the same format.  */
 210 #define NM_FLAGS "-png"
 211 \f
 212 /* The system headers under Solaris 2 are C++-aware since 2.0.  */
 213 #define NO_IMPLICIT_EXTERN_C
 214
 215 #define STDC_0_IN_SYSTEM_HEADERS 1
 216
 217 /* Support Solaris-specific format checking for cmn_err.  */
 218 #define TARGET_N_FORMAT_TYPES 1
 219 #define TARGET_FORMAT_TYPES solaris_format_types
 220
 221 /* #pragma init and #pragma fini are implemented on top of init and
 222    fini attributes.  */
 223 #define SOLARIS_ATTRIBUTE_TABLE                                         \
 224   { "init",      0, 0, true,  false,  false, NULL, false },             \
 225   { "fini",      0, 0, true,  false,  false, NULL, false }
 226
 227 /* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
 228    the bits from config/sol2.c.  */
 229 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
 230 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
 231
 232 /* Allow macro expansion in #pragma pack.  */
 233 #define HANDLE_PRAGMA_PACK_WITH_EXPANSION
 234
 235 #define TARGET_CXX_DECL_MANGLING_CONTEXT solaris_cxx_decl_mangling_context
 236
 237 /* Solaris/x86 as and gas support unquoted section names.  */
 238 #define SECTION_NAME_FORMAT     "%s"
 239
 240 /* This is how to declare the size of a function.  For Solaris, we output
 241    any .init or .fini entries here.  */
 242 #undef ASM_DECLARE_FUNCTION_SIZE
 243 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \
 244   do                                                            \
 245     {                                                           \
 246       if (!flag_inhibit_size_directive)                         \
 247         ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \
 248       solaris_output_init_fini (FILE, DECL);                    \
 249     }                                                           \
 250   while (0)
 251
 252 /* Solaris as has a bug: a .common directive in .tbss or .tdata section
 253    behaves as .tls_common rather than normal non-TLS .common.  */
 254 #undef  ASM_OUTPUT_ALIGNED_COMMON
 255 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
 256   do                                                                    \
 257     {                                                                   \
 258       if (TARGET_SUN_TLS                                                \
 259           && in_section                                                 \
 260           && ((in_section->common.flags & SECTION_TLS) == SECTION_TLS)) \
 261         switch_to_section (bss_section);                                \
 262       fprintf ((FILE), "%s", COMMON_ASM_OP);                            \
 263       assemble_name ((FILE), (NAME));                                   \
 264       fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",          \
 265                (SIZE), (ALIGN) / BITS_PER_UNIT);                        \
 266     }                                                                   \
 267   while (0)
 268
 269 #ifndef USE_GAS
 270 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 271 #define TARGET_ASM_ASSEMBLE_VISIBILITY solaris_assemble_visibility
 272
 273 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
 274
 275 /* The Solaris assembler cannot grok .stabd directives.  */
 276 #undef NO_DBX_BNSYM_ENSYM
 277 #define NO_DBX_BNSYM_ENSYM 1
 278 #endif
 279
 280 #ifndef USE_GLD
 281 /* The Solaris linker doesn't understand constructor priorities.  */
 282 #undef SUPPORTS_INIT_PRIORITY
 283 #define SUPPORTS_INIT_PRIORITY 0
 284 #endif
 285
 286 /* Solaris has an implementation of __enable_execute_stack.  */
 287 #define HAVE_ENABLE_EXECUTE_STACK
 288
 289 /* Static stack checking is supported by means of probes.  */
 290 #define STACK_CHECK_STATIC_BUILTIN 1
 291
 292 #define TARGET_POSIX_IO
 293
 294 #undef TARGET_LIBC_HAS_FUNCTION
 295 #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
 296
 297 extern GTY(()) tree solaris_pending_aligns;
 298 extern GTY(()) tree solaris_pending_inits;
 299 extern GTY(()) tree solaris_pending_finis;