gcc/config/i386/sol2.h

/* Target definitions for GCC for Intel 80386 running Solaris 2
   Copyright (C) 1993-2014 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/>.  */

/* Augment i386/unix.h version to return 8-byte vectors in memory, matching
   Sun Studio compilers until version 12, the only ones supported on
   Solaris 9.  */
#undef TARGET_SUBTARGET_DEFAULT
#define TARGET_SUBTARGET_DEFAULT \
	(MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS)

/* 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)

/* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
   syntax.  */
#undef TARGET_SUN_TLS
#define TARGET_SUN_TLS 1

#undef  SIZE_TYPE
#define SIZE_TYPE "unsigned int"

#undef  PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"

/* Solaris 2/Intel as chokes on #line directives before Solaris 10.  */
#undef CPP_SPEC
#define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"

#define ASM_CPU_DEFAULT_SPEC ""

#define ASM_CPU_SPEC ""
 
/* Don't include ASM_PIC_SPEC.  While the Solaris 9 assembler accepts
   -K PIC, it gives many warnings:
	R_386_32 relocation is used for symbol "<symbol>"
   GNU as doesn't recognize -K at all.  */
#undef ASM_SPEC
#define ASM_SPEC ASM_SPEC_BASE

#undef  ENDFILE_SPEC
#define ENDFILE_SPEC \
  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
   %{mpc32:crtprec32.o%s} \
   %{mpc64:crtprec64.o%s} \
   %{mpc80:crtprec80.o%s} \
   crtend.o%s crtn.o%s"

#define SUBTARGET_CPU_EXTRA_SPECS \
  { "cpp_subtarget",	 CPP_SUBTARGET_SPEC },		\
  { "asm_cpu",		 ASM_CPU_SPEC },		\
  { "asm_cpu_default",	 ASM_CPU_DEFAULT_SPEC },	\

#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
  { "startfile_arch",	STARTFILE_ARCH_SPEC },		\
  { "link_arch",	LINK_ARCH_SPEC },		\
  SUBTARGET_CPU_EXTRA_SPECS

/* Register the Solaris-specific #pragma directives.  */
#define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()

#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)

#ifndef USE_GAS
/* 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.  */
#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 /* !USE_GAS */

/* Output a simple call for .init/.fini.  */
#define ASM_OUTPUT_CALL(FILE, FN)				\
  do								\
    {								\
      fprintf (FILE, "\tcall\t");				\
      ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');	\
      fprintf (FILE, "\n");					\
    }								\
  while (0)

#undef TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section

#ifndef USE_GAS
/* Emit COMDAT group signature symbols for Sun as.  */
#undef TARGET_ASM_FILE_END
#define TARGET_ASM_FILE_END solaris_file_end
#endif

/* Unlike GNU ld, Sun ld doesn't coalesce .ctors.N/.dtors.N sections, so
   inhibit their creation.  Also cf. sparc/sysv4.h.  */
#ifndef USE_GLD
#define CTORS_SECTION_ASM_OP	"\t.section\t.ctors, \"aw\""
#define DTORS_SECTION_ASM_OP	"\t.section\t.dtors, \"aw\""
#endif

/* 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 USE_GLD
#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