1/* Target definitions for GCC for Intel 80386 running Solaris 2
2   Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3   2004
4   Free Software Foundation, Inc.
5   Contributed by Fred Fish (fnf@cygnus.com).
6
7This file is part of GCC.
8
9GCC is free software; you can redistribute it and/or modify
10it under the terms of the GNU General Public License as published by
11the Free Software Foundation; either version 2, or (at your option)
12any later version.
13
14GCC is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with GCC; see the file COPYING.  If not, write to
21the Free Software Foundation, 51 Franklin Street, Fifth Floor,
22Boston, MA 02110-1301, USA.  */
23
24/* The Solaris 2.0 x86 linker botches alignment of code sections.
25   It tries to align to a 16 byte boundary by padding with 0x00000090
26   ints, rather than 0x90 bytes (nop).  This generates trash in the
27   ".init" section since the contribution from crtbegin.o is only 7
28   bytes.  The linker pads it to 16 bytes with a single 0x90 byte, and
29   two 0x00000090 ints, which generates a segmentation violation when
30   executed.  This macro forces the assembler to do the padding, since
31   it knows what it is doing.  */
32#define FORCE_CODE_SECTION_ALIGN  asm(ALIGN_ASM_OP "16");
33
34/* Old versions of the Solaris assembler can not handle the difference of
35   labels in different sections, so force DW_EH_PE_datarel.  */
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)				\
39	       | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4	\
40		  : DW_EH_PE_datarel))					\
41   : DW_EH_PE_absptr)
42
43/* The Solaris linker will not merge a read-only .eh_frame section
44   with a read-write .eh_frame section.  None of the encodings used
45   with non-PIC code require runtime relocations.  In 64-bit mode,
46   since there is no backwards compatibility issue, we use a read-only
47   section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame
48   section in order to be compatible with G++ for Solaris x86.  */
49#undef EH_TABLES_CAN_BE_READ_ONLY
50#define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
51
52/* Solaris 2/Intel as chokes on #line directives.  */
53#undef CPP_SPEC
54#define CPP_SPEC "%{.S:-P} %(cpp_subtarget)"
55
56/* FIXME: Removed -K PIC from generic Solaris 2 ASM_SPEC: the native assembler
57   gives many warnings: R_386_32 relocation is used for symbol ".text".  */
58#undef ASM_SPEC
59#define ASM_SPEC "\
60%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
61%(asm_cpu) \
62"
63
64#define ASM_CPU_SPEC ""
65
66#undef SUBTARGET_EXTRA_SPECS
67#define SUBTARGET_EXTRA_SPECS \
68  { "cpp_subtarget",	CPP_SUBTARGET_SPEC },	\
69  { "asm_cpu",		ASM_CPU_SPEC },		\
70  { "startfile_arch",	STARTFILE_ARCH_SPEC },	\
71  { "link_arch",	LINK_ARCH_SPEC }
72
73#undef LOCAL_LABEL_PREFIX
74#define LOCAL_LABEL_PREFIX "."
75
76/* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */
77#ifndef TARGET_BI_ARCH
78#undef ASM_QUAD
79#endif
80
81/* The Solaris assembler wants a .local for non-exported aliases.  */
82#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)	\
83  do {							\
84    const char *declname =				\
85      IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));	\
86    ASM_OUTPUT_DEF ((FILE), declname,			\
87		    IDENTIFIER_POINTER (TARGET));	\
88    if (! TREE_PUBLIC (DECL))				\
89      {							\
90	fprintf ((FILE), "%s", LOCAL_ASM_OP);		\
91	assemble_name ((FILE), declname);		\
92	fprintf ((FILE), "\n");				\
93      }							\
94  } while (0)
95
96/* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
97   the bits from config/sol2.c.  */
98#define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
99#define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
100
101/* Output a simple call for .init/.fini.  */
102#define ASM_OUTPUT_CALL(FILE, FN)				\
103  do								\
104    {								\
105      fprintf (FILE, "\tcall\t");				\
106      print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');	\
107      fprintf (FILE, "\n");					\
108    }								\
109  while (0)
110
111/* We do not need NT_VERSION notes.  */
112#undef X86_FILE_START_VERSION_DIRECTIVE
113#define X86_FILE_START_VERSION_DIRECTIVE false
114