gcc/config/i386/sol2.h

   1 /* Target definitions for GCC for Intel 80386 running Solaris 2
   2    Copyright (C) 1993-2014 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 if so.  */
  30 #ifndef HAVE_AS_IX86_DIFF_SECT_DELTA
  31 #undef ASM_PREFERRED_EH_DATA_FORMAT
  32 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                       \
  33   (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0)                         \
  34                | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4       \
  35                   : DW_EH_PE_datarel))                                  \
  36    : DW_EH_PE_absptr)
  37 #endif
  38
  39 /* The Solaris linker will not merge a read-only .eh_frame section
  40    with a read-write .eh_frame section.  None of the encodings used
  41    with non-PIC code require runtime relocations.  In 64-bit mode,
  42    since there is no backwards compatibility issue, we use a read-only
  43    section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame
  44    section in order to be compatible with G++ for Solaris x86.  */
  45 #undef EH_TABLES_CAN_BE_READ_ONLY
  46 #define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
  47
  48 /* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
  49    syntax.  */
  50 #undef TARGET_SUN_TLS
  51 #define TARGET_SUN_TLS 1
  52
  53 #undef  SIZE_TYPE
  54 #define SIZE_TYPE "unsigned int"
  55
  56 #undef  PTRDIFF_TYPE
  57 #define PTRDIFF_TYPE "int"
  58
  59 /* Solaris 2/Intel as chokes on #line directives before Solaris 10.  */
  60 #undef CPP_SPEC
  61 #define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"
  62
  63 #define ASM_CPU_DEFAULT_SPEC ""
  64
  65 #define ASM_CPU_SPEC ""
  66
  67 /* Don't include ASM_PIC_SPEC.  While the Solaris 9 assembler accepts
  68    -K PIC, it gives many warnings:
  69         R_386_32 relocation is used for symbol "<symbol>"
  70    GNU as doesn't recognize -K at all.  */
  71 #undef ASM_SPEC
  72 #define ASM_SPEC ASM_SPEC_BASE
  73
  74 #undef  ENDFILE_SPEC
  75 #define ENDFILE_SPEC \
  76   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
  77    %{mpc32:crtprec32.o%s} \
  78    %{mpc64:crtprec64.o%s} \
  79    %{mpc80:crtprec80.o%s} \
  80    crtend.o%s crtn.o%s"
  81
  82 #define SUBTARGET_CPU_EXTRA_SPECS \
  83   { "cpp_subtarget",     CPP_SUBTARGET_SPEC },          \
  84   { "asm_cpu",           ASM_CPU_SPEC },                \
  85   { "asm_cpu_default",   ASM_CPU_DEFAULT_SPEC },        \
  86
  87 #undef SUBTARGET_EXTRA_SPECS
  88 #define SUBTARGET_EXTRA_SPECS \
  89   { "startfile_arch",   STARTFILE_ARCH_SPEC },          \
  90   { "link_arch",        LINK_ARCH_SPEC },               \
  91   SUBTARGET_CPU_EXTRA_SPECS
  92
  93 /* Register the Solaris-specific #pragma directives.  */
  94 #define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()
  95
  96 #undef LOCAL_LABEL_PREFIX
  97 #define LOCAL_LABEL_PREFIX "."
  98
  99 /* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */
 100 #ifndef HAVE_AS_IX86_QUAD
 101 #undef ASM_QUAD
 102 #endif
 103
 104 /* The Solaris assembler wants a .local for non-exported aliases.  */
 105 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)   \
 106   do {                                                  \
 107     const char *declname =                              \
 108       IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));  \
 109     ASM_OUTPUT_DEF ((FILE), declname,                   \
 110                     IDENTIFIER_POINTER (TARGET));       \
 111     if (! TREE_PUBLIC (DECL))                           \
 112       {                                                 \
 113         fprintf ((FILE), "%s", LOCAL_ASM_OP);           \
 114         assemble_name ((FILE), declname);               \
 115         fprintf ((FILE), "\n");                         \
 116       }                                                 \
 117   } while (0)
 118
 119 #ifndef USE_GAS
 120 /* The Sun assembler uses .tcomm for TLS common sections.  */
 121 #define TLS_COMMON_ASM_OP ".tcomm"
 122
 123 /* Similar to the Sun assembler on SPARC, the native assembler requires
 124    TLS objects to be declared as @tls_obj (not @tls_object).  Unlike SPARC,
 125    gas doesn't understand this variant.  */
 126 #undef  ASM_DECLARE_OBJECT_NAME
 127 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
 128   do                                                            \
 129     {                                                           \
 130       HOST_WIDE_INT size;                                       \
 131                                                                 \
 132       if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \
 133         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj");      \
 134       else                                                      \
 135         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
 136                                                                 \
 137       size_directive_output = 0;                                \
 138       if (!flag_inhibit_size_directive                          \
 139           && (DECL) && DECL_SIZE (DECL))                        \
 140         {                                                       \
 141           size_directive_output = 1;                            \
 142           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 143           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 144         }                                                       \
 145                                                                 \
 146       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 147     }                                                           \
 148   while (0)
 149 #endif /* !USE_GAS */
 150
 151 /* Output a simple call for .init/.fini.  */
 152 #define ASM_OUTPUT_CALL(FILE, FN)                               \
 153   do                                                            \
 154     {                                                           \
 155       fprintf (FILE, "\tcall\t");                               \
 156       ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');  \
 157       fprintf (FILE, "\n");                                     \
 158     }                                                           \
 159   while (0)
 160
 161 #undef TARGET_ASM_NAMED_SECTION
 162 #define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section
 163
 164 #ifndef USE_GAS
 165 /* Emit COMDAT group signature symbols for Sun as.  */
 166 #undef TARGET_ASM_FILE_END
 167 #define TARGET_ASM_FILE_END solaris_file_end
 168 #endif
 169
 170 /* Unlike GNU ld, Sun ld doesn't coalesce .ctors.N/.dtors.N sections, so
 171    inhibit their creation.  Also cf. sparc/sysv4.h.  */
 172 #ifndef USE_GLD
 173 #define CTORS_SECTION_ASM_OP    "\t.section\t.ctors, \"aw\""
 174 #define DTORS_SECTION_ASM_OP    "\t.section\t.dtors, \"aw\""
 175 #endif
 176
 177 /* We do not need NT_VERSION notes.  */
 178 #undef X86_FILE_START_VERSION_DIRECTIVE
 179 #define X86_FILE_START_VERSION_DIRECTIVE false
 180
 181 /* Only recent versions of Solaris 11 ld properly support hidden .gnu.linkonce
 182    sections, so don't use them.  */
 183 #ifndef USE_GLD
 184 #define USE_HIDDEN_LINKONCE 0
 185 #endif
 186
 187 /* Put all *tf routines in libgcc.  */
 188 #undef LIBGCC2_HAS_TF_MODE
 189 #define LIBGCC2_HAS_TF_MODE 1
 190 #define LIBGCC2_TF_CEXT q
 191 #define TF_SIZE 113