gcc/config/i386/sol2.h

   1 /* Target definitions for GCC for Intel 80386 running Solaris 2
   2    Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   3    2004, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
   4    Contributed by Fred Fish (fnf@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 /* Augment i386/unix.h version to return 8-byte vectors in memory, matching
  23    Sun Studio compilers until version 12, the only ones supported on
  24    Solaris 8 and 9.  */
  25 #undef TARGET_SUBTARGET_DEFAULT
  26 #define TARGET_SUBTARGET_DEFAULT \
  27         (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS)
  28
  29 /* Old versions of the Solaris assembler can not handle the difference of
  30    labels in different sections, so force DW_EH_PE_datarel.  */
  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
  38 /* The Solaris linker will not merge a read-only .eh_frame section
  39    with a read-write .eh_frame section.  None of the encodings used
  40    with non-PIC code require runtime relocations.  In 64-bit mode,
  41    since there is no backwards compatibility issue, we use a read-only
  42    section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame
  43    section in order to be compatible with G++ for Solaris x86.  */
  44 #undef EH_TABLES_CAN_BE_READ_ONLY
  45 #define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
  46
  47 /* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
  48    syntax.  */
  49 #undef TARGET_SUN_TLS
  50 #define TARGET_SUN_TLS 1
  51
  52 #undef  SIZE_TYPE
  53 #define SIZE_TYPE "unsigned int"
  54
  55 #undef  PTRDIFF_TYPE
  56 #define PTRDIFF_TYPE "int"
  57
  58 /* Solaris 2/Intel as chokes on #line directives before Solaris 10.  */
  59 #undef CPP_SPEC
  60 #define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"
  61
  62 #define ASM_CPU_DEFAULT_SPEC ""
  63
  64 #define ASM_CPU_SPEC ""
  65
  66 /* Don't include ASM_PIC_SPEC.  While the Solaris 8 and 9 assembler accepts
  67    -K PIC, it gives many warnings:
  68         R_386_32 relocation is used for symbol "<symbol>"
  69    GNU as doesn't recognize -K at all.  */
  70 #undef ASM_SPEC
  71 #define ASM_SPEC ASM_SPEC_BASE
  72
  73 #define SUBTARGET_CPU_EXTRA_SPECS \
  74   { "cpp_subtarget",     CPP_SUBTARGET_SPEC },          \
  75   { "asm_cpu",           ASM_CPU_SPEC },                \
  76   { "asm_cpu_default",   ASM_CPU_DEFAULT_SPEC },        \
  77
  78 #undef SUBTARGET_EXTRA_SPECS
  79 #define SUBTARGET_EXTRA_SPECS \
  80   { "startfile_arch",   STARTFILE_ARCH_SPEC },          \
  81   { "link_arch",        LINK_ARCH_SPEC },               \
  82   SUBTARGET_CPU_EXTRA_SPECS
  83
  84 /* Register the Solaris-specific #pragma directives.  */
  85 #define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()
  86
  87 #undef LOCAL_LABEL_PREFIX
  88 #define LOCAL_LABEL_PREFIX "."
  89
  90 /* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */
  91 #ifndef HAVE_AS_IX86_QUAD
  92 #undef ASM_QUAD
  93 #endif
  94
  95 /* The Solaris assembler wants a .local for non-exported aliases.  */
  96 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)   \
  97   do {                                                  \
  98     const char *declname =                              \
  99       IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));  \
 100     ASM_OUTPUT_DEF ((FILE), declname,                   \
 101                     IDENTIFIER_POINTER (TARGET));       \
 102     if (! TREE_PUBLIC (DECL))                           \
 103       {                                                 \
 104         fprintf ((FILE), "%s", LOCAL_ASM_OP);           \
 105         assemble_name ((FILE), declname);               \
 106         fprintf ((FILE), "\n");                         \
 107       }                                                 \
 108   } while (0)
 109
 110 #ifndef USE_GAS
 111 /* The Sun assembler uses .tcomm for TLS common sections.  */
 112 #define TLS_COMMON_ASM_OP ".tcomm"
 113
 114 /* Similar to the Sun assembler on SPARC, the native assembler requires
 115    TLS objects to be declared as @tls_obj (not @tls_object).  Unlike SPARC,
 116    gas doesn't understand this variant.  */
 117 #undef  ASM_DECLARE_OBJECT_NAME
 118 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
 119   do                                                            \
 120     {                                                           \
 121       HOST_WIDE_INT size;                                       \
 122                                                                 \
 123       if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \
 124         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj");      \
 125       else                                                      \
 126         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
 127                                                                 \
 128       size_directive_output = 0;                                \
 129       if (!flag_inhibit_size_directive                          \
 130           && (DECL) && DECL_SIZE (DECL))                        \
 131         {                                                       \
 132           size_directive_output = 1;                            \
 133           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 134           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 135         }                                                       \
 136                                                                 \
 137       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 138     }                                                           \
 139   while (0)
 140 #endif /* !USE_GAS */
 141
 142 /* Output a simple call for .init/.fini.  */
 143 #define ASM_OUTPUT_CALL(FILE, FN)                               \
 144   do                                                            \
 145     {                                                           \
 146       fprintf (FILE, "\tcall\t");                               \
 147       ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');  \
 148       fprintf (FILE, "\n");                                     \
 149     }                                                           \
 150   while (0)
 151
 152 #undef TARGET_ASM_NAMED_SECTION
 153 #define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section
 154
 155 /* We do not need NT_VERSION notes.  */
 156 #undef X86_FILE_START_VERSION_DIRECTIVE
 157 #define X86_FILE_START_VERSION_DIRECTIVE false
 158
 159 /* Only recent versions of Solaris 11 ld properly support hidden .gnu.linkonce
 160    sections, so don't use them.  */
 161 #ifndef USE_GLD
 162 #define USE_HIDDEN_LINKONCE 0
 163 #endif
 164
 165 /* Put all *tf routines in libgcc.  */
 166 #undef LIBGCC2_HAS_TF_MODE
 167 #define LIBGCC2_HAS_TF_MODE 1
 168 #define LIBGCC2_TF_CEXT q
 169 #define TF_SIZE 113