gcc/config/i386/sol2.h

   1 /* Target definitions for GCC for Intel 80386 running Solaris 2
   2    Copyright (C) 1993-2013 Free Software Foundation, Inc.
   3    Contributed by Fred Fish (fnf@cygnus.com).
   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 /* Augment i386/unix.h version to return 8-byte vectors in memory, matching
  22    Sun Studio compilers until version 12, the only ones supported on
  23    Solaris 9.  */
  24 #undef TARGET_SUBTARGET_DEFAULT
  25 #define TARGET_SUBTARGET_DEFAULT \
  26         (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS)
  27
  28 /* Old versions of the Solaris assembler can not handle the difference of
  29    labels in different sections, so force DW_EH_PE_datarel.  */
  30 #undef ASM_PREFERRED_EH_DATA_FORMAT
  31 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                       \
  32   (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0)                         \
  33                | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4       \
  34                   : DW_EH_PE_datarel))                                  \
  35    : DW_EH_PE_absptr)
  36
  37 /* The Solaris linker will not merge a read-only .eh_frame section
  38    with a read-write .eh_frame section.  None of the encodings used
  39    with non-PIC code require runtime relocations.  In 64-bit mode,
  40    since there is no backwards compatibility issue, we use a read-only
  41    section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame
  42    section in order to be compatible with G++ for Solaris x86.  */
  43 #undef EH_TABLES_CAN_BE_READ_ONLY
  44 #define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
  45
  46 /* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
  47    syntax.  */
  48 #undef TARGET_SUN_TLS
  49 #define TARGET_SUN_TLS 1
  50
  51 #undef  SIZE_TYPE
  52 #define SIZE_TYPE "unsigned int"
  53
  54 #undef  PTRDIFF_TYPE
  55 #define PTRDIFF_TYPE "int"
  56
  57 /* Solaris 2/Intel as chokes on #line directives before Solaris 10.  */
  58 #undef CPP_SPEC
  59 #define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"
  60
  61 #define ASM_CPU_DEFAULT_SPEC ""
  62
  63 #define ASM_CPU_SPEC ""
  64
  65 /* Don't include ASM_PIC_SPEC.  While the Solaris 9 assembler accepts
  66    -K PIC, it gives many warnings:
  67         R_386_32 relocation is used for symbol "<symbol>"
  68    GNU as doesn't recognize -K at all.  */
  69 #undef ASM_SPEC
  70 #define ASM_SPEC ASM_SPEC_BASE
  71
  72 #undef  ENDFILE_SPEC
  73 #define ENDFILE_SPEC \
  74   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
  75    %{mpc32:crtprec32.o%s} \
  76    %{mpc64:crtprec64.o%s} \
  77    %{mpc80:crtprec80.o%s} \
  78    crtend.o%s crtn.o%s"
  79
  80 #define SUBTARGET_CPU_EXTRA_SPECS \
  81   { "cpp_subtarget",     CPP_SUBTARGET_SPEC },          \
  82   { "asm_cpu",           ASM_CPU_SPEC },                \
  83   { "asm_cpu_default",   ASM_CPU_DEFAULT_SPEC },        \
  84
  85 #undef SUBTARGET_EXTRA_SPECS
  86 #define SUBTARGET_EXTRA_SPECS \
  87   { "startfile_arch",   STARTFILE_ARCH_SPEC },          \
  88   { "link_arch",        LINK_ARCH_SPEC },               \
  89   SUBTARGET_CPU_EXTRA_SPECS
  90
  91 /* Register the Solaris-specific #pragma directives.  */
  92 #define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()
  93
  94 #undef LOCAL_LABEL_PREFIX
  95 #define LOCAL_LABEL_PREFIX "."
  96
  97 /* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */
  98 #ifndef HAVE_AS_IX86_QUAD
  99 #undef ASM_QUAD
 100 #endif
 101
 102 /* The Solaris assembler wants a .local for non-exported aliases.  */
 103 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)   \
 104   do {                                                  \
 105     const char *declname =                              \
 106       IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));  \
 107     ASM_OUTPUT_DEF ((FILE), declname,                   \
 108                     IDENTIFIER_POINTER (TARGET));       \
 109     if (! TREE_PUBLIC (DECL))                           \
 110       {                                                 \
 111         fprintf ((FILE), "%s", LOCAL_ASM_OP);           \
 112         assemble_name ((FILE), declname);               \
 113         fprintf ((FILE), "\n");                         \
 114       }                                                 \
 115   } while (0)
 116
 117 #ifndef USE_GAS
 118 /* The Sun assembler uses .tcomm for TLS common sections.  */
 119 #define TLS_COMMON_ASM_OP ".tcomm"
 120
 121 /* Similar to the Sun assembler on SPARC, the native assembler requires
 122    TLS objects to be declared as @tls_obj (not @tls_object).  Unlike SPARC,
 123    gas doesn't understand this variant.  */
 124 #undef  ASM_DECLARE_OBJECT_NAME
 125 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
 126   do                                                            \
 127     {                                                           \
 128       HOST_WIDE_INT size;                                       \
 129                                                                 \
 130       if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \
 131         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj");      \
 132       else                                                      \
 133         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
 134                                                                 \
 135       size_directive_output = 0;                                \
 136       if (!flag_inhibit_size_directive                          \
 137           && (DECL) && DECL_SIZE (DECL))                        \
 138         {                                                       \
 139           size_directive_output = 1;                            \
 140           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 141           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 142         }                                                       \
 143                                                                 \
 144       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 145     }                                                           \
 146   while (0)
 147 #endif /* !USE_GAS */
 148
 149 /* Output a simple call for .init/.fini.  */
 150 #define ASM_OUTPUT_CALL(FILE, FN)                               \
 151   do                                                            \
 152     {                                                           \
 153       fprintf (FILE, "\tcall\t");                               \
 154       ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');  \
 155       fprintf (FILE, "\n");                                     \
 156     }                                                           \
 157   while (0)
 158
 159 #undef TARGET_ASM_NAMED_SECTION
 160 #define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section
 161
 162 #ifndef USE_GAS
 163 /* Emit COMDAT group signature symbols for Sun as.  */
 164 #undef TARGET_ASM_FILE_END
 165 #define TARGET_ASM_FILE_END solaris_file_end
 166 #endif
 167
 168 /* Unlike GNU ld, Sun ld doesn't coalesce .ctors.N/.dtors.N sections, so
 169    inhibit their creation.  Also cf. sparc/sysv4.h.  */
 170 #ifndef USE_GLD
 171 #define CTORS_SECTION_ASM_OP    "\t.section\t.ctors, \"aw\""
 172 #define DTORS_SECTION_ASM_OP    "\t.section\t.dtors, \"aw\""
 173 #endif
 174
 175 /* We do not need NT_VERSION notes.  */
 176 #undef X86_FILE_START_VERSION_DIRECTIVE
 177 #define X86_FILE_START_VERSION_DIRECTIVE false
 178
 179 /* Only recent versions of Solaris 11 ld properly support hidden .gnu.linkonce
 180    sections, so don't use them.  */
 181 #ifndef USE_GLD
 182 #define USE_HIDDEN_LINKONCE 0
 183 #endif
 184
 185 /* Put all *tf routines in libgcc.  */
 186 #undef LIBGCC2_HAS_TF_MODE
 187 #define LIBGCC2_HAS_TF_MODE 1
 188 #define LIBGCC2_TF_CEXT q
 189 #define TF_SIZE 113