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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 10:53:49 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 10:53:49 -0400
commitb581af5110ab62db3a33f86ea7531d5f898a520c (patch)
treeeef312788928ad26ab5687438903bf19f6aaa207 /arch/x86/include/asm/system.h
parentffaf854b011bde97d63955a71232a20fe4382a38 (diff)
parent53f824520b6d84ca5b4a8fd71addc91dbf64357e (diff)
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86/i386: Put aligned stack-canary in percpu shared_aligned section x86/i386: Make sure stack-protector segment base is cache aligned x86: Detect stack protector for i386 builds on x86_64 x86: allow "=rm" in native_save_fl() x86: properly annotate alternatives.c x86: Introduce GDT_ENTRY_INIT(), initialize bad_bios_desc statically x86, 32-bit: Use generic sys_pipe() x86: Introduce GDT_ENTRY_INIT(), fix APM x86: Introduce GDT_ENTRY_INIT() x86: Introduce set_desc_base() and set_desc_limit() x86: Remove unused patch_espfix_desc() x86: Use get_desc_base()
Diffstat (limited to 'arch/x86/include/asm/system.h')
-rw-r--r--arch/x86/include/asm/system.h29
1 files changed, 1 insertions, 28 deletions
diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h
index 643c59b4bc6e..f08f97374892 100644
--- a/arch/x86/include/asm/system.h
+++ b/arch/x86/include/asm/system.h
@@ -31,7 +31,7 @@ void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p,
31 "movl %P[task_canary](%[next]), %%ebx\n\t" \ 31 "movl %P[task_canary](%[next]), %%ebx\n\t" \
32 "movl %%ebx, "__percpu_arg([stack_canary])"\n\t" 32 "movl %%ebx, "__percpu_arg([stack_canary])"\n\t"
33#define __switch_canary_oparam \ 33#define __switch_canary_oparam \
34 , [stack_canary] "=m" (per_cpu_var(stack_canary)) 34 , [stack_canary] "=m" (per_cpu_var(stack_canary.canary))
35#define __switch_canary_iparam \ 35#define __switch_canary_iparam \
36 , [task_canary] "i" (offsetof(struct task_struct, stack_canary)) 36 , [task_canary] "i" (offsetof(struct task_struct, stack_canary))
37#else /* CC_STACKPROTECTOR */ 37#else /* CC_STACKPROTECTOR */
@@ -150,33 +150,6 @@ do { \
150#endif 150#endif
151 151
152#ifdef __KERNEL__ 152#ifdef __KERNEL__
153#define _set_base(addr, base) do { unsigned long __pr; \
154__asm__ __volatile__ ("movw %%dx,%1\n\t" \
155 "rorl $16,%%edx\n\t" \
156 "movb %%dl,%2\n\t" \
157 "movb %%dh,%3" \
158 :"=&d" (__pr) \
159 :"m" (*((addr)+2)), \
160 "m" (*((addr)+4)), \
161 "m" (*((addr)+7)), \
162 "0" (base) \
163 ); } while (0)
164
165#define _set_limit(addr, limit) do { unsigned long __lr; \
166__asm__ __volatile__ ("movw %%dx,%1\n\t" \
167 "rorl $16,%%edx\n\t" \
168 "movb %2,%%dh\n\t" \
169 "andb $0xf0,%%dh\n\t" \
170 "orb %%dh,%%dl\n\t" \
171 "movb %%dl,%2" \
172 :"=&d" (__lr) \
173 :"m" (*(addr)), \
174 "m" (*((addr)+6)), \
175 "0" (limit) \
176 ); } while (0)
177
178#define set_base(ldt, base) _set_base(((char *)&(ldt)) , (base))
179#define set_limit(ldt, limit) _set_limit(((char *)&(ldt)) , ((limit)-1))
180 153
181extern void native_load_gs_index(unsigned); 154extern void native_load_gs_index(unsigned);
182 155