sol2.h revision 169690 
151694Sroger/* Target definitions for GCC for Intel 80386 running Solaris 2
251694Sroger   Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
351694Sroger   2004
451694Sroger   Free Software Foundation, Inc.
551694Sroger   Contributed by Fred Fish (fnf@cygnus.com).
651694Sroger
751694SrogerThis file is part of GCC.
851694Sroger
951694SrogerGCC is free software; you can redistribute it and/or modify
1051694Srogerit under the terms of the GNU General Public License as published by
1152593Srogerthe Free Software Foundation; either version 2, or (at your option)
1251694Srogerany later version.
1351694Sroger
1451694SrogerGCC is distributed in the hope that it will be useful,
1551694Srogerbut WITHOUT ANY WARRANTY; without even the implied warranty of
16139749SimpMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1751694SrogerGNU General Public License for more details.
1851694Sroger
1951694SrogerYou should have received a copy of the GNU General Public License
2051694Srogeralong with GCC; see the file COPYING.  If not, write to
2151694Srogerthe Free Software Foundation, 51 Franklin Street, Fifth Floor,
2251694SrogerBoston, MA 02110-1301, USA.  */
2351694Sroger
2451694Sroger/* The Solaris 2.0 x86 linker botches alignment of code sections.
2551694Sroger   It tries to align to a 16 byte boundary by padding with 0x00000090
2651694Sroger   ints, rather than 0x90 bytes (nop).  This generates trash in the
2751694Sroger   ".init" section since the contribution from crtbegin.o is only 7
2851694Sroger   bytes.  The linker pads it to 16 bytes with a single 0x90 byte, and
2951694Sroger   two 0x00000090 ints, which generates a segmentation violation when
3051694Sroger   executed.  This macro forces the assembler to do the padding, since
3151694Sroger   it knows what it is doing.  */
3251694Sroger#define FORCE_CODE_SECTION_ALIGN  asm(ALIGN_ASM_OP "16");
3351694Sroger
3451694Sroger/* Old versions of the Solaris assembler can not handle the difference of
3551694Sroger   labels in different sections, so force DW_EH_PE_datarel.  */
3651694Sroger#undef ASM_PREFERRED_EH_DATA_FORMAT
3751694Sroger#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)			\
3851694Sroger  (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0)				\
3951694Sroger	       | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4	\
4051694Sroger		  : DW_EH_PE_datarel))					\
4151694Sroger   : DW_EH_PE_absptr)
4251694Sroger
4351694Sroger/* The Solaris linker will not merge a read-only .eh_frame section
4451694Sroger   with a read-write .eh_frame section.  None of the encodings used
4551694Sroger   with non-PIC code require runtime relocations.  In 64-bit mode,
4651694Sroger   since there is no backwards compatibility issue, we use a read-only
4751694Sroger   section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame
4851694Sroger   section in order to be compatible with G++ for Solaris x86.  */
4951694Sroger#undef EH_TABLES_CAN_BE_READ_ONLY
5051694Sroger#define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
5151694Sroger
5251694Sroger/* Solaris 2/Intel as chokes on #line directives.  */
5351694Sroger#undef CPP_SPEC
5451694Sroger#define CPP_SPEC "%{.S:-P} %(cpp_subtarget)"
5551694Sroger
5651694Sroger/* FIXME: Removed -K PIC from generic Solaris 2 ASM_SPEC: the native assembler
5751694Sroger   gives many warnings: R_386_32 relocation is used for symbol ".text".  */
5851694Sroger#undef ASM_SPEC
5951694Sroger#define ASM_SPEC "\
6051694Sroger%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
6151694Sroger%(asm_cpu) \
6251694Sroger"
6351694Sroger
6451694Sroger#define ASM_CPU_SPEC ""
6551694Sroger
6651694Sroger#undef SUBTARGET_EXTRA_SPECS
67118819Salex#define SUBTARGET_EXTRA_SPECS \
68118819Salex  { "cpp_subtarget",	CPP_SUBTARGET_SPEC },	\
69118819Salex  { "asm_cpu",		ASM_CPU_SPEC },		\
70118819Salex  { "startfile_arch",	STARTFILE_ARCH_SPEC },	\
71118819Salex  { "link_arch",	LINK_ARCH_SPEC }
72118819Salex
7351694Sroger#undef LOCAL_LABEL_PREFIX
7451694Sroger#define LOCAL_LABEL_PREFIX "."
7551694Sroger
7652593Sroger/* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */
7752593Sroger#ifndef TARGET_BI_ARCH
7852593Sroger#undef ASM_QUAD
7952593Sroger#endif
8052593Sroger
8152593Sroger/* The Solaris assembler wants a .local for non-exported aliases.  */
8252593Sroger#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)	\
8351694Sroger  do {							\
8451694Sroger    const char *declname =				\
8551694Sroger      IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));	\
8651694Sroger    ASM_OUTPUT_DEF ((FILE), declname,			\
8751694Sroger		    IDENTIFIER_POINTER (TARGET));	\
8851694Sroger    if (! TREE_PUBLIC (DECL))				\
8951694Sroger      {							\
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