xref: /freebsd-10.0-release/contrib/gcc/config/i386/sol2.h

/* Target definitions for GNU compiler for Intel 80386 running Solaris 2
   Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
   Free Software Foundation, Inc.
   Contributed by Fred Fish (fnf@cygnus.com).

This file is part of GNU CC.

GNU CC 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 2, or (at your option)
any later version.

GNU CC 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 GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* 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");

/* 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.  */
#undef ASM_PREFERRED_EH_DATA_FORMAT
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)			\
  (flag_pic ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_datarel	\
   : DW_EH_PE_absptr)

/* Solaris 2/Intel as chokes on #line directives.  */
#undef CPP_SPEC
#define CPP_SPEC "%{.S:-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 Solaris assembler does not support .quad.  Do not use it.  */
#undef ASM_QUAD