Subversion Repositories openrisc_2011-10-31

/* Definitions of target machine for GCC, for SPARC running Solaris 2

   Copyright 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005,

   2006, 2007, 2008, 2010 Free Software Foundation, Inc.

   Contributed by Ron Guilmette (rfg@netcom.com).

   Additional changes by David V. Henkel-Wallace (gumby@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/>.  */

/* Supposedly the same as vanilla sparc svr4, except for the stuff below: */

/* This is here rather than in sparc.h because it's not known what

   other assemblers will accept.  */

#if TARGET_CPU_DEFAULT == TARGET_CPU_v9

#undef ASM_CPU_DEFAULT_SPEC

#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plus"

#endif

#if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc

#undef ASM_CPU_DEFAULT_SPEC

#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusa"

#endif

#if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3

#undef ASM_CPU_DEFAULT_SPEC

#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusb"

#endif

#if TARGET_CPU_DEFAULT == TARGET_CPU_niagara

#undef ASM_CPU_DEFAULT_SPEC

#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusb"

#endif

#if TARGET_CPU_DEFAULT == TARGET_CPU_niagara2

#undef ASM_CPU_DEFAULT_SPEC

#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusb"

#endif

#undef ASM_CPU_SPEC

#define ASM_CPU_SPEC "\

%{mcpu=v9:-xarch=v8plus} \

%{mcpu=ultrasparc:-xarch=v8plusa} \

%{mcpu=ultrasparc3:-xarch=v8plusb} \

%{mcpu=niagara:-xarch=v8plusb} \

%{mcpu=niagara2:-xarch=v8plusb} \

%{!mcpu*:%(asm_cpu_default)} \

"

#undef SUBTARGET_EXTRA_SPECS

#define SUBTARGET_EXTRA_SPECS \

  { "startfile_arch",   STARTFILE_ARCH_SPEC },  \

  { "link_arch",        LINK_ARCH_SPEC }

/* However it appears that Solaris 2.0 uses the same reg numbering as

   the old BSD-style system did.  */

/* The Solaris 2 assembler uses .skip, not .zero, so put this back.  */

#undef ASM_OUTPUT_SKIP

#define ASM_OUTPUT_SKIP(FILE,SIZE)  \

  fprintf (FILE, "\t.skip %u\n", (int)(SIZE))

#undef  LOCAL_LABEL_PREFIX

#define LOCAL_LABEL_PREFIX  "."

/* This is how to store into the string LABEL

   the symbol_ref name of an internal numbered label where

   PREFIX is the class of label and NUM is the number within the class.

   This is suitable for output with `assemble_name'.  */

#undef  ASM_GENERATE_INTERNAL_LABEL

#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \

  sprintf ((LABEL), "*.L%s%lu", (PREFIX), (unsigned long)(NUM))

/* The native TLS-enabled assembler requires the directive #tls_object

   to be put on objects in TLS sections (as of v7.1).  This is not

   required by the GNU assembler but supported on SPARC.  */

#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_object");   \

      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)

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

#undef NO_DBX_BNSYM_ENSYM

#define NO_DBX_BNSYM_ENSYM 1

#undef  ENDFILE_SPEC

#define ENDFILE_SPEC \

  "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \

   crtend.o%s crtn.o%s"

/* Select a format to encode pointers in exception handling data.  CODE

   is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is

   true if the symbol may be affected by dynamic relocations.

   Some Solaris dynamic linkers don't handle unaligned section relative

   relocs properly, so force them to be aligned.  */

#ifndef HAVE_AS_SPARC_UA_PCREL

#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \

  ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)

#endif

/* Define for support of TFmode long double.

   SPARC ABI says that long double is 4 words.  */

#define LONG_DOUBLE_TYPE_SIZE 128

/* Solaris's _Qp_* library routine implementation clobbers the output

   memory before the inputs are fully consumed.  */

#undef TARGET_BUGGY_QP_LIB

#define TARGET_BUGGY_QP_LIB     1

#undef SUN_CONVERSION_LIBFUNCS

#define SUN_CONVERSION_LIBFUNCS 1

#undef DITF_CONVERSION_LIBFUNCS

#define DITF_CONVERSION_LIBFUNCS 1

#undef SUN_INTEGER_MULTIPLY_64

#define SUN_INTEGER_MULTIPLY_64 1

/* Solaris allows 64 bit out and global registers in 32 bit mode.

   sparc_override_options will disable V8+ if not generating V9 code.  */

#undef TARGET_DEFAULT

#define TARGET_DEFAULT (MASK_V8PLUS + MASK_APP_REGS + MASK_FPU \

                        + MASK_LONG_DOUBLE_128)

/* 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_TARGET_PRAGMAS() solaris_register_pragmas ()

/* 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), 0); \

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

    }                                                           \

  while (0)

/* Use Solaris ELF section syntax.  */

#undef TARGET_ASM_NAMED_SECTION

#define TARGET_ASM_NAMED_SECTION sparc_solaris_elf_asm_named_section

/* Solaris/SPARC as uses a non-standard .section/.pushsection syntax.

   While gas supports it, too, we prefer the standard variant.  */

#ifndef USE_GAS

#undef PUSHSECTION_FORMAT

#define PUSHSECTION_FORMAT      "\t.pushsection\t\"%s\"\n"

#endif

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