gcc/config/sol2.h

   1 /* Operating system specific defines to be used when targeting GCC for any
   2    Solaris 2 system.
   3    Copyright 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011, 2012
   4    Free Software Foundation, Inc.
   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 /* We are compiling for Solaris 2 now.  */
  23 #define TARGET_SOLARIS 1
  24
  25 /* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t.  */
  26 #undef WCHAR_TYPE
  27 #define WCHAR_TYPE "long int"
  28
  29 #undef WCHAR_TYPE_SIZE
  30 #define WCHAR_TYPE_SIZE BITS_PER_WORD
  31
  32 /* Solaris 2 uses a wint_t different from the default. This is required
  33    by the SCD 2.4.1, p. 6-83, Figure 6-66.  */
  34 #undef  WINT_TYPE
  35 #define WINT_TYPE "long int"
  36
  37 #undef  WINT_TYPE_SIZE
  38 #define WINT_TYPE_SIZE BITS_PER_WORD
  39
  40 #define SIG_ATOMIC_TYPE "int"
  41
  42 /* ??? This definition of int8_t follows the system header but does
  43    not conform to C99.  Likewise int_fast8_t, int_least8_t.  */
  44 #define INT8_TYPE "char"
  45 #define INT16_TYPE "short int"
  46 #define INT32_TYPE "int"
  47 #define INT64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  48 #define UINT8_TYPE "unsigned char"
  49 #define UINT16_TYPE "short unsigned int"
  50 #define UINT32_TYPE "unsigned int"
  51 #define UINT64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  52
  53 #define INT_LEAST8_TYPE "char"
  54 #define INT_LEAST16_TYPE "short int"
  55 #define INT_LEAST32_TYPE "int"
  56 #define INT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  57 #define UINT_LEAST8_TYPE "unsigned char"
  58 #define UINT_LEAST16_TYPE "short unsigned int"
  59 #define UINT_LEAST32_TYPE "unsigned int"
  60 #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  61
  62 #define INT_FAST8_TYPE "char"
  63 #define INT_FAST16_TYPE "int"
  64 #define INT_FAST32_TYPE "int"
  65 #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  66 #define UINT_FAST8_TYPE "unsigned char"
  67 #define UINT_FAST16_TYPE "unsigned int"
  68 #define UINT_FAST32_TYPE "unsigned int"
  69 #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  70
  71 #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
  72 #define UINTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
  73
  74 #undef CPP_SUBTARGET_SPEC
  75 #define CPP_SUBTARGET_SPEC "\
  76 %{pthreads|pthread:-D_REENTRANT -D_PTHREADS}"
  77
  78 /* Names to predefine in the preprocessor for this target machine.  */
  79 #define TARGET_SUB_OS_CPP_BUILTINS()
  80 #define TARGET_OS_CPP_BUILTINS()                        \
  81     do {                                                \
  82         builtin_define_std ("unix");                    \
  83         builtin_define_std ("sun");                     \
  84         builtin_define ("__svr4__");                    \
  85         builtin_define ("__SVR4");                      \
  86         builtin_assert ("system=unix");                 \
  87         builtin_assert ("system=svr4");                 \
  88         /* For C++ we need to add some additional macro \
  89            definitions required by the C++ standard     \
  90            library.  */                                 \
  91         if (c_dialect_cxx ())                           \
  92           {                                             \
  93             builtin_define ("__STDC_VERSION__=199901L");\
  94             builtin_define ("_XOPEN_SOURCE=600");       \
  95             builtin_define ("_LARGEFILE_SOURCE=1");     \
  96             builtin_define ("_LARGEFILE64_SOURCE=1");   \
  97             builtin_define ("__EXTENSIONS__");          \
  98           }                                             \
  99         TARGET_SUB_OS_CPP_BUILTINS();                   \
 100     } while (0)
 101
 102 #define SUBTARGET_OVERRIDE_OPTIONS                      \
 103   do {                                                  \
 104     solaris_override_options ();                        \
 105   } while (0)
 106
 107
 108 /* It's safe to pass -s always, even if -g is not used.  Those options are
 109    handled by both Sun as and GNU as.  */
 110 #define ASM_SPEC_BASE \
 111 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{Ym,*} -s %(asm_cpu)"
 112
 113 #define ASM_PIC_SPEC " %{fpic|fpie|fPIC|fPIE:-K PIC}"
 114
 115 #undef LIB_SPEC
 116 #define LIB_SPEC \
 117   "%{!symbolic:\
 118      %{pthreads|pthread:-lpthread} \
 119      %{pthreads|pthread|fprofile-generate*:" LIB_TLS_SPEC "} \
 120      %{p|pg:-ldl} -lc}"
 121
 122 #ifndef CROSS_DIRECTORY_STRUCTURE
 123 #undef MD_EXEC_PREFIX
 124 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
 125
 126 #undef MD_STARTFILE_PREFIX
 127 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
 128 #endif
 129
 130 #undef STARTFILE_ARCH32_SPEC
 131 #define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \
 132                             %{!ansi:values-Xa.o%s}"
 133
 134 #undef STARTFILE_ARCH_SPEC
 135 #define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC
 136
 137 /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.  */
 138 #undef STARTFILE_SPEC
 139 #define STARTFILE_SPEC "%{!shared: \
 140                          %{!symbolic: \
 141                           %{p:mcrt1.o%s} \
 142                           %{!p: \
 143                             %{pg:gcrt1.o%s gmon.o%s} \
 144                             %{!pg:crt1.o%s}}}} \
 145                         crti.o%s %(startfile_arch) \
 146                         crtbegin.o%s"
 147
 148 #undef  ENDFILE_SPEC
 149 #define ENDFILE_SPEC \
 150   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 151    crtend.o%s crtn.o%s"
 152
 153 #undef LINK_ARCH32_SPEC_BASE
 154 #define LINK_ARCH32_SPEC_BASE \
 155   "%{G:-G} \
 156    %{YP,*} \
 157    %{R*} \
 158    %{!YP,*:%{p|pg:-Y P,%R/usr/ccs/lib/libp:%R/usr/lib/libp:%R/usr/ccs/lib:%R/lib:%R/usr/lib} \
 159            %{!p:%{!pg:-Y P,%R/usr/ccs/lib:%R/lib:%R/usr/lib}}}"
 160
 161 #undef LINK_ARCH32_SPEC
 162 #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE
 163
 164 #undef LINK_ARCH_SPEC
 165 #define LINK_ARCH_SPEC LINK_ARCH32_SPEC
 166
 167 #ifndef USE_GLD
 168 /* With Sun ld, -rdynamic is a no-op.  */
 169 #define RDYNAMIC_SPEC ""
 170 #else
 171 /* GNU ld needs --export-dynamic to implement -rdynamic.  */
 172 #define RDYNAMIC_SPEC "--export-dynamic"
 173 #endif
 174
 175 #undef  LINK_SPEC
 176 #define LINK_SPEC \
 177   "%{h*} %{v:-V} \
 178    %{!shared:%{!static:%{rdynamic: " RDYNAMIC_SPEC "}}} \
 179    %{static:-dn -Bstatic} \
 180    %{shared:-G -dy %{!mimpure-text:-z text}} \
 181    %{symbolic:-Bsymbolic -G -dy -z text} \
 182    %(link_arch) \
 183    %{Qy:} %{!Qn:-Qy}"
 184
 185 #ifdef USE_GLD
 186 /* Solaris 11 build 135+ implements dl_iterate_phdr.  GNU ld needs
 187    --eh-frame-hdr to create the required .eh_frame_hdr sections.  */
 188 #if defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
 189 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
 190 #endif /* HAVE_LD_EH_FRAME && TARGET_DL_ITERATE_PHDR */
 191 #endif
 192
 193 #ifndef USE_GLD
 194 /* The default MFLIB_SPEC is GNU ld specific.  */
 195 #define MFLIB_SPEC ""
 196 #endif
 197
 198 /* collect2.c can only parse GNU nm -n output.  Solaris nm needs -png to
 199    produce the same format.  */
 200 #define NM_FLAGS "-png"
 201 \f
 202 /* The system headers under Solaris 2 are C++-aware since 2.0.  */
 203 #define NO_IMPLICIT_EXTERN_C
 204
 205 #define STDC_0_IN_SYSTEM_HEADERS 1
 206
 207 /* Support Solaris-specific format checking for cmn_err.  */
 208 #define TARGET_N_FORMAT_TYPES 1
 209 #define TARGET_FORMAT_TYPES solaris_format_types
 210
 211 /* #pragma init and #pragma fini are implemented on top of init and
 212    fini attributes.  */
 213 #define SOLARIS_ATTRIBUTE_TABLE                                         \
 214   { "init",      0, 0, true,  false,  false, NULL, false },             \
 215   { "fini",      0, 0, true,  false,  false, NULL, false }
 216
 217 /* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
 218    the bits from config/sol2.c.  */
 219 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
 220 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
 221
 222 /* Allow macro expansion in #pragma pack.  */
 223 #define HANDLE_PRAGMA_PACK_WITH_EXPANSION
 224
 225 #define TARGET_CXX_DECL_MANGLING_CONTEXT solaris_cxx_decl_mangling_context
 226
 227 /* Solaris/x86 as and gas support unquoted section names.  */
 228 #define SECTION_NAME_FORMAT     "%s"
 229
 230 /* This is how to declare the size of a function.  For Solaris, we output
 231    any .init or .fini entries here.  */
 232 #undef ASM_DECLARE_FUNCTION_SIZE
 233 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \
 234   do                                                            \
 235     {                                                           \
 236       if (!flag_inhibit_size_directive)                         \
 237         ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \
 238       solaris_output_init_fini (FILE, DECL);                    \
 239     }                                                           \
 240   while (0)
 241
 242 /* Solaris as has a bug: a .common directive in .tbss or .tdata section
 243    behaves as .tls_common rather than normal non-TLS .common.  */
 244 #undef  ASM_OUTPUT_ALIGNED_COMMON
 245 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
 246   do                                                                    \
 247     {                                                                   \
 248       if (TARGET_SUN_TLS                                                \
 249           && in_section                                                 \
 250           && ((in_section->common.flags & SECTION_TLS) == SECTION_TLS)) \
 251         switch_to_section (bss_section);                                \
 252       fprintf ((FILE), "%s", COMMON_ASM_OP);                            \
 253       assemble_name ((FILE), (NAME));                                   \
 254       fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",          \
 255                (SIZE), (ALIGN) / BITS_PER_UNIT);                        \
 256     }                                                                   \
 257   while (0)
 258
 259 #ifndef USE_GAS
 260 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 261 #define TARGET_ASM_ASSEMBLE_VISIBILITY solaris_assemble_visibility
 262
 263 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
 264
 265 /* The Solaris assembler cannot grok .stabd directives.  */
 266 #undef NO_DBX_BNSYM_ENSYM
 267 #define NO_DBX_BNSYM_ENSYM 1
 268 #endif
 269
 270 #ifndef USE_GLD
 271 /* The Solaris linker doesn't understand constructor priorities.  */
 272 #undef SUPPORTS_INIT_PRIORITY
 273 #define SUPPORTS_INIT_PRIORITY 0
 274 #endif
 275
 276 /* Solaris has an implementation of __enable_execute_stack.  */
 277 #define HAVE_ENABLE_EXECUTE_STACK
 278
 279 /* Static stack checking is supported by means of probes.  */
 280 #define STACK_CHECK_STATIC_BUILTIN 1
 281
 282 #define TARGET_POSIX_IO
 283
 284 extern GTY(()) tree solaris_pending_aligns;
 285 extern GTY(()) tree solaris_pending_inits;
 286 extern GTY(()) tree solaris_pending_finis;