Mercurial > hg > CbC > CbC_gcc
comparison gcc/config/i386/sol2.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children | 58ad6c70ea60 |
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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 Free Software Foundation, Inc. | |
4 Contributed by Fred Fish (fnf@cygnus.com). | |
5 | |
6 This file is part of GCC. | |
7 | |
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) | |
11 any later version. | |
12 | |
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. | |
17 | |
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/>. */ | |
21 | |
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"); | |
31 | |
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)) \ | |
39 : DW_EH_PE_absptr) | |
40 | |
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) | |
49 | |
50 /* Solaris 2/Intel as chokes on #line directives. */ | |
51 #undef CPP_SPEC | |
52 #define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)" | |
53 | |
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". */ | |
56 #undef ASM_SPEC | |
57 #define ASM_SPEC "\ | |
58 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \ | |
59 %(asm_cpu) \ | |
60 " | |
61 | |
62 #define ASM_CPU_SPEC "" | |
63 | |
64 #undef SUBTARGET_EXTRA_SPECS | |
65 #define SUBTARGET_EXTRA_SPECS \ | |
66 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \ | |
67 { "asm_cpu", ASM_CPU_SPEC }, \ | |
68 { "startfile_arch", STARTFILE_ARCH_SPEC }, \ | |
69 { "link_arch", LINK_ARCH_SPEC } | |
70 | |
71 #undef LOCAL_LABEL_PREFIX | |
72 #define LOCAL_LABEL_PREFIX "." | |
73 | |
74 /* The 32-bit Solaris assembler does not support .quad. Do not use it. */ | |
75 #ifndef TARGET_BI_ARCH | |
76 #undef ASM_QUAD | |
77 #endif | |
78 | |
79 /* The Solaris assembler wants a .local for non-exported aliases. */ | |
80 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \ | |
81 do { \ | |
82 const char *declname = \ | |
83 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \ | |
84 ASM_OUTPUT_DEF ((FILE), declname, \ | |
85 IDENTIFIER_POINTER (TARGET)); \ | |
86 if (! TREE_PUBLIC (DECL)) \ | |
87 { \ | |
88 fprintf ((FILE), "%s", LOCAL_ASM_OP); \ | |
89 assemble_name ((FILE), declname); \ | |
90 fprintf ((FILE), "\n"); \ | |
91 } \ | |
92 } while (0) | |
93 | |
94 /* Solaris-specific #pragmas are implemented on top of attributes. Hook in | |
95 the bits from config/sol2.c. */ | |
96 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes | |
97 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE | |
98 | |
99 /* Register the Solaris-specific #pragma directives. */ | |
100 #define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas () | |
101 | |
102 /* Output a simple call for .init/.fini. */ | |
103 #define ASM_OUTPUT_CALL(FILE, FN) \ | |
104 do \ | |
105 { \ | |
106 fprintf (FILE, "\tcall\t"); \ | |
107 print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P'); \ | |
108 fprintf (FILE, "\n"); \ | |
109 } \ | |
110 while (0) | |
111 | |
112 /* We do not need NT_VERSION notes. */ | |
113 #undef X86_FILE_START_VERSION_DIRECTIVE | |
114 #define X86_FILE_START_VERSION_DIRECTIVE false |