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comparison gcc/config/i386/linux.h @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents b7f97abdc517
children 04ced10e8804
comparison
equal deleted inserted replaced
65:65488c3d617d 67:f6334be47118
1 /* Definitions for Intel 386 running Linux-based GNU systems with ELF format. 1 /* Definitions for Intel 386 running Linux-based GNU systems with ELF format.
2 Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2004, 2005, 2 Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2004, 2005,
3 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. 3 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4 Contributed by Eric Youngdale. 4 Contributed by Eric Youngdale.
5 Modified for stabs-in-ELF by H.J. Lu. 5 Modified for stabs-in-ELF by H.J. Lu.
6 6
7 This file is part of GCC. 7 This file is part of GCC.
8 8
83 #define CC1_SPEC "%(cc1_cpu) %{profile:-p}" 83 #define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
84 84
85 /* Provide a LINK_SPEC appropriate for Linux. Here we provide support 85 /* Provide a LINK_SPEC appropriate for Linux. Here we provide support
86 for the special GCC options -static and -shared, which allow us to 86 for the special GCC options -static and -shared, which allow us to
87 link things in one of these three modes by applying the appropriate 87 link things in one of these three modes by applying the appropriate
88 combinations of options at link-time. We like to support here for 88 combinations of options at link-time.
89 as many of the other GNU linker options as possible. But I don't
90 have the time to search for those flags. I am sure how to add
91 support for -soname shared_object_name. H.J.
92
93 I took out %{v:%{!V:-V}}. It is too much :-(. They can use
94 -Wl,-V.
95 89
96 When the -shared link option is used a final link is not being 90 When the -shared link option is used a final link is not being
97 done. */ 91 done. */
98
99 /* If ELF is the default format, we should not use /lib/elf. */
100 92
101 /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */ 93 /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
102 #define LINK_EMULATION "elf_i386" 94 #define LINK_EMULATION "elf_i386"
103 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" 95 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
104 96
105 #undef ASM_SPEC 97 #undef ASM_SPEC
106 #define ASM_SPEC \ 98 #define ASM_SPEC \
107 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} --32 \ 99 "--32 %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
108 %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
109 100
110 #undef SUBTARGET_EXTRA_SPECS 101 #undef SUBTARGET_EXTRA_SPECS
111 #define SUBTARGET_EXTRA_SPECS \ 102 #define SUBTARGET_EXTRA_SPECS \
112 { "link_emulation", LINK_EMULATION },\ 103 { "link_emulation", LINK_EMULATION },\
113 { "dynamic_linker", LINUX_DYNAMIC_LINKER } 104 { "dynamic_linker", LINUX_DYNAMIC_LINKER }
114 105
115 #undef LINK_SPEC 106 #undef LINK_SPEC
116 #define LINK_SPEC "-m %(link_emulation) %{shared:-shared} \ 107 #define LINK_SPEC "-m %(link_emulation) %{shared:-shared} \
117 %{!shared: \ 108 %{!shared: \
118 %{!ibcs: \ 109 %{!static: \
119 %{!static: \ 110 %{rdynamic:-export-dynamic} \
120 %{rdynamic:-export-dynamic} \ 111 -dynamic-linker %(dynamic_linker)} \
121 %{!dynamic-linker:-dynamic-linker %(dynamic_linker)}} \ 112 %{static:-static}}"
122 %{static:-static}}}"
123 113
124 /* Similar to standard Linux, but adding -ffast-math support. */ 114 /* Similar to standard Linux, but adding -ffast-math support. */
125 #undef ENDFILE_SPEC 115 #undef ENDFILE_SPEC
126 #define ENDFILE_SPEC \ 116 #define ENDFILE_SPEC \
127 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ 117 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
207 #define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h" 197 #define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h"
208 198
209 /* The stack pointer needs to be moved while checking the stack. */ 199 /* The stack pointer needs to be moved while checking the stack. */
210 #define STACK_CHECK_MOVING_SP 1 200 #define STACK_CHECK_MOVING_SP 1
211 201
202 /* Static stack checking is supported by means of probes. */
203 #define STACK_CHECK_STATIC_BUILTIN 1
204
212 /* This macro may be overridden in i386/k*bsd-gnu.h. */ 205 /* This macro may be overridden in i386/k*bsd-gnu.h. */
213 #define REG_NAME(reg) reg 206 #define REG_NAME(reg) reg
214 207
215 #ifdef TARGET_LIBC_PROVIDES_SSP 208 #ifdef TARGET_LIBC_PROVIDES_SSP
216 /* i386 glibc provides __stack_chk_guard in %gs:0x14. */ 209 /* i386 glibc provides __stack_chk_guard in %gs:0x14. */
217 #define TARGET_THREAD_SSP_OFFSET 0x14 210 #define TARGET_THREAD_SSP_OFFSET 0x14
211
212 /* We steal the last transactional memory word. */
213 #define TARGET_CAN_SPLIT_STACK
214 #define TARGET_THREAD_SPLIT_STACK_OFFSET 0x30
218 #endif 215 #endif