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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [i386/] [sol2.h] - Blame information for rev 282

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1 282 jeremybenn
/* Target definitions for GCC for Intel 80386 running Solaris 2
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   Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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   2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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   Contributed by Fred Fish (fnf@cygnus.com).
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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/* The Solaris 2.0 x86 linker botches alignment of code sections.
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   It tries to align to a 16 byte boundary by padding with 0x00000090
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   ints, rather than 0x90 bytes (nop).  This generates trash in the
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   ".init" section since the contribution from crtbegin.o is only 7
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   bytes.  The linker pads it to 16 bytes with a single 0x90 byte, and
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   two 0x00000090 ints, which generates a segmentation violation when
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   executed.  This macro forces the assembler to do the padding, since
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   it knows what it is doing.  */
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#define FORCE_CODE_SECTION_ALIGN  asm(ALIGN_ASM_OP "16");
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/* Old versions of the Solaris assembler can not handle the difference of
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   labels in different sections, so force DW_EH_PE_datarel.  */
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#undef ASM_PREFERRED_EH_DATA_FORMAT
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#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                       \
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  (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0)                          \
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               | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4       \
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                  : DW_EH_PE_datarel))                                  \
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   : DW_EH_PE_absptr)
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/* The Solaris linker will not merge a read-only .eh_frame section
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   with a read-write .eh_frame section.  None of the encodings used
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   with non-PIC code require runtime relocations.  In 64-bit mode,
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   since there is no backwards compatibility issue, we use a read-only
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   section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame
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   section in order to be compatible with G++ for Solaris x86.  */
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#undef EH_TABLES_CAN_BE_READ_ONLY
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#define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
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/* Solaris 2/Intel as chokes on #line directives.  */
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#undef CPP_SPEC
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#define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"
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/* FIXME: Removed -K PIC from generic Solaris 2 ASM_SPEC: the native assembler
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   gives many warnings: R_386_32 relocation is used for symbol ".text".  */
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#undef ASM_SPEC
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#define ASM_SPEC "\
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%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
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%(asm_cpu) \
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"
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#define ASM_CPU_SPEC ""
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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  { "cpp_subtarget",    CPP_SUBTARGET_SPEC },   \
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  { "asm_cpu",          ASM_CPU_SPEC },         \
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  { "startfile_arch",   STARTFILE_ARCH_SPEC },  \
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  { "link_arch",        LINK_ARCH_SPEC }
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX "."
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/* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */
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#ifndef HAVE_AS_IX86_QUAD
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#undef ASM_QUAD
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#endif
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/* The Solaris assembler wants a .local for non-exported aliases.  */
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#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)   \
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  do {                                                  \
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    const char *declname =                              \
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      IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));  \
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    ASM_OUTPUT_DEF ((FILE), declname,                   \
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                    IDENTIFIER_POINTER (TARGET));       \
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    if (! TREE_PUBLIC (DECL))                           \
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      {                                                 \
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        fprintf ((FILE), "%s", LOCAL_ASM_OP);           \
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        assemble_name ((FILE), declname);               \
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        fprintf ((FILE), "\n");                         \
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      }                                                 \
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  } while (0)
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/* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
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   syntax.  */
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#undef TARGET_SUN_TLS
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#define TARGET_SUN_TLS 1
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/* The Sun assembler uses .tcomm for TLS common sections.  */
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#define TLS_COMMON_ASM_OP ".tcomm"
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/* Similar to the Sun assembler on SPARC, the native assembler requires
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   TLS objects to be declared as @tls_obj (not @tls_object).  Unlike SPARC,
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   gas doesn't understand this variant.  */
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#ifndef USE_GAS
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#undef  ASM_DECLARE_OBJECT_NAME
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#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
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  do                                                            \
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    {                                                           \
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      HOST_WIDE_INT size;                                       \
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                                                                \
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      if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \
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        ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj");      \
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      else                                                      \
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        ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
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                                                                \
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      size_directive_output = 0;                                \
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      if (!flag_inhibit_size_directive                          \
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          && (DECL) && DECL_SIZE (DECL))                        \
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        {                                                       \
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          size_directive_output = 1;                            \
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          size = int_size_in_bytes (TREE_TYPE (DECL));          \
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          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
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        }                                                       \
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                                                                \
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      ASM_OUTPUT_LABEL (FILE, NAME);                            \
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    }                                                           \
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  while (0)
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#endif
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/* The Solaris assembler cannot grok .stabd directives.  */
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#undef NO_DBX_BNSYM_ENSYM
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#define NO_DBX_BNSYM_ENSYM 1
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/* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
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   the bits from config/sol2.c.  */
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#define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
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#define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
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/* Register the Solaris-specific #pragma directives.  */
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#define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()
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#undef SUBTARGET_RETURN_IN_MEMORY
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#define SUBTARGET_RETURN_IN_MEMORY(TYPE, FNTYPE) \
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        ix86_solaris_return_in_memory (TYPE, FNTYPE)
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/* Output a simple call for .init/.fini.  */
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#define ASM_OUTPUT_CALL(FILE, FN)                               \
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  do                                                            \
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    {                                                           \
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      fprintf (FILE, "\tcall\t");                               \
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      print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');       \
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      fprintf (FILE, "\n");                                     \
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    }                                                           \
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  while (0)
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/* We do not need NT_VERSION notes.  */
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#undef X86_FILE_START_VERSION_DIRECTIVE
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#define X86_FILE_START_VERSION_DIRECTIVE false
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/* Only recent versions of Solaris 11 ld properly support hidden .gnu.linkonce
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   sections, so don't use them.  */
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#ifndef TARGET_GNU_LD
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#define USE_HIDDEN_LINKONCE 0
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#endif
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/* Put all *tf routines in libgcc.  */
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#undef LIBGCC2_HAS_TF_MODE
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#define LIBGCC2_HAS_TF_MODE 1
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#define LIBGCC2_TF_CEXT q
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#define TF_SIZE 113
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#define MD_UNWIND_SUPPORT "config/i386/sol2-unwind.h"

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