sol2.h revision 122180 
1/* Target definitions for GNU compiler for Intel 80386 running Solaris 2
2   Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
3   Free Software Foundation, Inc.
4   Contributed by Fred Fish (fnf@cygnus.com).
5
6This file is part of GNU CC.
7
8GNU CC is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2, or (at your option)
11any later version.
12
13GNU CC is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GNU CC; see the file COPYING.  If not, write to
20the Free Software Foundation, 59 Temple Place - Suite 330,
21Boston, MA 02111-1307, USA.  */
22
23/* The Solaris 2.0 x86 linker botches alignment of code sections.
24   It tries to align to a 16 byte boundary by padding with 0x00000090
25   ints, rather than 0x90 bytes (nop).  This generates trash in the
26   ".init" section since the contribution from crtbegin.o is only 7
27   bytes.  The linker pads it to 16 bytes with a single 0x90 byte, and
28   two 0x00000090 ints, which generates a segmentation violation when
29   executed.  This macro forces the assembler to do the padding, since
30   it knows what it is doing.  */
31#define FORCE_CODE_SECTION_ALIGN  asm(ALIGN_ASM_OP "16");
32
33/* Select a format to encode pointers in exception handling data.  CODE
34   is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
35   true if the symbol may be affected by dynamic relocations.  */
36#undef ASM_PREFERRED_EH_DATA_FORMAT
37#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)			\
38  (flag_pic ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_datarel	\
39   : DW_EH_PE_absptr)
40
41/* Solaris 2/Intel as chokes on #line directives.  */
42#undef CPP_SPEC
43#define CPP_SPEC "%{.S:-P} %(cpp_subtarget)"
44
45/* FIXME: Removed -K PIC from generic Solaris 2 ASM_SPEC: the native assembler
46   gives many warnings: R_386_32 relocation is used for symbol ".text".  */
47#undef ASM_SPEC
48#define ASM_SPEC "\
49%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
50%(asm_cpu) \
51"
52
53#define ASM_CPU_SPEC ""
54
55#undef SUBTARGET_EXTRA_SPECS
56#define SUBTARGET_EXTRA_SPECS \
57  { "cpp_subtarget",	CPP_SUBTARGET_SPEC },	\
58  { "asm_cpu",		ASM_CPU_SPEC },		\
59  { "startfile_arch",	STARTFILE_ARCH_SPEC },	\
60  { "link_arch",	LINK_ARCH_SPEC }
61
62#undef LOCAL_LABEL_PREFIX
63#define LOCAL_LABEL_PREFIX "."
64
65/* The Solaris assembler does not support .quad.  Do not use it.  */
66#undef ASM_QUAD
67