Subversion Repositories openrisc_2011-10-31

/* Target definitions for GCC for Intel 80386 running Solaris 2

   Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,

   2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

   Contributed by Fred Fish (fnf@cygnus.com).

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

/* The Solaris 2.0 x86 linker botches alignment of code sections.

   It tries to align to a 16 byte boundary by padding with 0x00000090

   ints, rather than 0x90 bytes (nop).  This generates trash in the

   ".init" section since the contribution from crtbegin.o is only 7

   bytes.  The linker pads it to 16 bytes with a single 0x90 byte, and

   two 0x00000090 ints, which generates a segmentation violation when

   executed.  This macro forces the assembler to do the padding, since

   it knows what it is doing.  */

#define FORCE_CODE_SECTION_ALIGN  asm(ALIGN_ASM_OP "16");

/* Old versions of the Solaris assembler can not handle the difference of

   labels in different sections, so force DW_EH_PE_datarel.  */

#undef ASM_PREFERRED_EH_DATA_FORMAT

#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                       \

  (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0)                          \

               | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4       \

                  : DW_EH_PE_datarel))                                  \

   : DW_EH_PE_absptr)

/* The Solaris linker will not merge a read-only .eh_frame section

   with a read-write .eh_frame section.  None of the encodings used

   with non-PIC code require runtime relocations.  In 64-bit mode,

   since there is no backwards compatibility issue, we use a read-only

   section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame

   section in order to be compatible with G++ for Solaris x86.  */

#undef EH_TABLES_CAN_BE_READ_ONLY

#define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)

/* Solaris 2/Intel as chokes on #line directives.  */

#undef CPP_SPEC

#define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"

/* FIXME: Removed -K PIC from generic Solaris 2 ASM_SPEC: the native assembler

   gives many warnings: R_386_32 relocation is used for symbol ".text".  */

#undef ASM_SPEC

#define ASM_SPEC "\

%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \

%(asm_cpu) \

"

#define ASM_CPU_SPEC ""

#undef SUBTARGET_EXTRA_SPECS

#define SUBTARGET_EXTRA_SPECS \

  { "cpp_subtarget",    CPP_SUBTARGET_SPEC },   \

  { "asm_cpu",          ASM_CPU_SPEC },         \

  { "startfile_arch",   STARTFILE_ARCH_SPEC },  \

  { "link_arch",        LINK_ARCH_SPEC }

#undef LOCAL_LABEL_PREFIX

#define LOCAL_LABEL_PREFIX "."

/* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */

#ifndef HAVE_AS_IX86_QUAD

#undef ASM_QUAD

#endif

/* The Solaris assembler wants a .local for non-exported aliases.  */

#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)   \

  do {                                                  \

    const char *declname =                              \

      IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));  \

    ASM_OUTPUT_DEF ((FILE), declname,                   \

                    IDENTIFIER_POINTER (TARGET));       \

    if (! TREE_PUBLIC (DECL))                           \

      {                                                 \

        fprintf ((FILE), "%s", LOCAL_ASM_OP);           \

        assemble_name ((FILE), declname);               \

        fprintf ((FILE), "\n");                         \

      }                                                 \

  } while (0)

/* Follow Sun requirements for TLS code sequences and use Sun assembler TLS

   syntax.  */

#undef TARGET_SUN_TLS

#define TARGET_SUN_TLS 1

/* The Sun assembler uses .tcomm for TLS common sections.  */

#define TLS_COMMON_ASM_OP ".tcomm"

/* Similar to the Sun assembler on SPARC, the native assembler requires

   TLS objects to be declared as @tls_obj (not @tls_object).  Unlike SPARC,

   gas doesn't understand this variant.  */

#ifndef USE_GAS

#undef  ASM_DECLARE_OBJECT_NAME

#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \

  do                                                            \

    {                                                           \

      HOST_WIDE_INT size;                                       \

                                                                \

      if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \

        ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj");      \

      else                                                      \

        ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \

                                                                \

      size_directive_output = 0;                                \

      if (!flag_inhibit_size_directive                          \

          && (DECL) && DECL_SIZE (DECL))                        \

        {                                                       \

          size_directive_output = 1;                            \

          size = int_size_in_bytes (TREE_TYPE (DECL));          \

          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \

        }                                                       \

                                                                \

      ASM_OUTPUT_LABEL (FILE, NAME);                            \

    }                                                           \

  while (0)

#endif

/* The Solaris assembler cannot grok .stabd directives.  */

#undef NO_DBX_BNSYM_ENSYM

#define NO_DBX_BNSYM_ENSYM 1

/* Solaris-specific #pragmas are implemented on top of attributes.  Hook in

   the bits from config/sol2.c.  */

#define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes

#define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE

/* Register the Solaris-specific #pragma directives.  */

#define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()

#undef SUBTARGET_RETURN_IN_MEMORY

#define SUBTARGET_RETURN_IN_MEMORY(TYPE, FNTYPE) \

        ix86_solaris_return_in_memory (TYPE, FNTYPE)

/* Output a simple call for .init/.fini.  */

#define ASM_OUTPUT_CALL(FILE, FN)                               \

  do                                                            \

    {                                                           \

      fprintf (FILE, "\tcall\t");                               \

      print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');       \

      fprintf (FILE, "\n");                                     \

    }                                                           \

  while (0)

/* We do not need NT_VERSION notes.  */

#undef X86_FILE_START_VERSION_DIRECTIVE

#define X86_FILE_START_VERSION_DIRECTIVE false

/* Only recent versions of Solaris 11 ld properly support hidden .gnu.linkonce

   sections, so don't use them.  */

#ifndef TARGET_GNU_LD

#define USE_HIDDEN_LINKONCE 0

#endif

/* Put all *tf routines in libgcc.  */

#undef LIBGCC2_HAS_TF_MODE

#define LIBGCC2_HAS_TF_MODE 1

#define LIBGCC2_TF_CEXT q

#define TF_SIZE 113

#define MD_UNWIND_SUPPORT "config/i386/sol2-unwind.h"