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, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4 Contributed by Fred Fish (fnf@cygnus.com).
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 /* The Solaris 2.0 x86 linker botches alignment of code sections.
23 It tries to align to a 16 byte boundary by padding with 0x00000090
24 ints, rather than 0x90 bytes (nop). This generates trash in the
25 ".init" section since the contribution from crtbegin.o is only 7
26 bytes. The linker pads it to 16 bytes with a single 0x90 byte, and
27 two 0x00000090 ints, which generates a segmentation violation when
28 executed. This macro forces the assembler to do the padding, since
29 it knows what it is doing. */
30 #define FORCE_CODE_SECTION_ALIGN asm(ALIGN_ASM_OP "16");
32 /* Old versions of the Solaris assembler can not handle the difference of
33 labels in different sections, so force DW_EH_PE_datarel. */
34 #undef ASM_PREFERRED_EH_DATA_FORMAT
35 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
36 (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0) \
37 | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4 \
38 : DW_EH_PE_datarel)) \
41 /* The Solaris linker will not merge a read-only .eh_frame section
42 with a read-write .eh_frame section. None of the encodings used
43 with non-PIC code require runtime relocations. In 64-bit mode,
44 since there is no backwards compatibility issue, we use a read-only
45 section for .eh_frame. In 32-bit mode, we use a writable .eh_frame
46 section in order to be compatible with G++ for Solaris x86. */
47 #undef EH_TABLES_CAN_BE_READ_ONLY
48 #define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
50 /* Solaris 2/Intel as chokes on #line directives. */
52 #define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"
54 /* FIXME: Removed -K PIC from generic Solaris 2 ASM_SPEC: the native assembler
55 gives many warnings: R_386_32 relocation is used for symbol ".text". */
57 #define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{Ym,*} -s %(asm_cpu)"
59 #define ASM_CPU_SPEC ""
61 #undef SUBTARGET_EXTRA_SPECS
62 #define SUBTARGET_EXTRA_SPECS \
63 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \
64 { "asm_cpu", ASM_CPU_SPEC }, \
65 { "startfile_arch", STARTFILE_ARCH_SPEC }, \
66 { "link_arch", LINK_ARCH_SPEC }
68 #undef LOCAL_LABEL_PREFIX
69 #define LOCAL_LABEL_PREFIX "."
71 /* The 32-bit Solaris assembler does not support .quad. Do not use it. */
72 #ifndef HAVE_AS_IX86_QUAD
76 /* The Solaris assembler wants a .local for non-exported aliases. */
77 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \
79 const char *declname = \
80 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
81 ASM_OUTPUT_DEF ((FILE), declname, \
82 IDENTIFIER_POINTER (TARGET)); \
83 if (! TREE_PUBLIC (DECL)) \
85 fprintf ((FILE), "%s", LOCAL_ASM_OP); \
86 assemble_name ((FILE), declname); \
87 fprintf ((FILE), "\n"); \
91 /* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
94 #define TARGET_SUN_TLS 1
96 /* The Sun assembler uses .tcomm for TLS common sections. */
97 #define TLS_COMMON_ASM_OP ".tcomm"
99 /* Similar to the Sun assembler on SPARC, the native assembler requires
100 TLS objects to be declared as @tls_obj (not @tls_object). Unlike SPARC,
101 gas doesn't understand this variant. */
103 #undef ASM_DECLARE_OBJECT_NAME
104 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
107 HOST_WIDE_INT size; \
109 if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL)) \
110 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj"); \
112 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
114 size_directive_output = 0; \
115 if (!flag_inhibit_size_directive \
116 && (DECL) && DECL_SIZE (DECL)) \
118 size_directive_output = 1; \
119 size = int_size_in_bytes (TREE_TYPE (DECL)); \
120 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
123 ASM_OUTPUT_LABEL (FILE, NAME); \
128 /* The Solaris assembler cannot grok .stabd directives. */
129 #undef NO_DBX_BNSYM_ENSYM
130 #define NO_DBX_BNSYM_ENSYM 1
132 /* Solaris-specific #pragmas are implemented on top of attributes. Hook in
133 the bits from config/sol2.c. */
134 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
135 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
137 /* Register the Solaris-specific #pragma directives. */
138 #define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()
140 /* Augment i386/unix.h version to return 8-byte vectors in memory, matching
141 Sun Studio compilers until version 12, the only ones supported on
143 #undef TARGET_SUBTARGET_DEFAULT
144 #define TARGET_SUBTARGET_DEFAULT \
145 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS)
147 /* Output a simple call for .init/.fini. */
148 #define ASM_OUTPUT_CALL(FILE, FN) \
151 fprintf (FILE, "\tcall\t"); \
152 ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P'); \
153 fprintf (FILE, "\n"); \
157 /* We do not need NT_VERSION notes. */
158 #undef X86_FILE_START_VERSION_DIRECTIVE
159 #define X86_FILE_START_VERSION_DIRECTIVE false
161 /* Static stack checking is supported by means of probes. */
162 #define STACK_CHECK_STATIC_BUILTIN 1
164 /* Only recent versions of Solaris 11 ld properly support hidden .gnu.linkonce
165 sections, so don't use them. */
166 #ifndef TARGET_GNU_LD
167 #define USE_HIDDEN_LINKONCE 0
170 /* Put all *tf routines in libgcc. */
171 #undef LIBGCC2_HAS_TF_MODE
172 #define LIBGCC2_HAS_TF_MODE 1
173 #define LIBGCC2_TF_CEXT q
177 #define SIZE_TYPE "unsigned int"
180 #define PTRDIFF_TYPE "int"
182 #define MD_UNWIND_SUPPORT "config/i386/sol2-unwind.h"