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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-01-30 13:31:08 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:31:08 +0100
commit0a3b4d151a8e57f50ce5a12c7ea5ec9965cf0b5a (patch)
treed052ba5e4b35484a78d613d3af42e4026b2fc192 /include/asm-x86/system_64.h
parent833d8469b102365f427f7791e79ec1843ff5f164 (diff)
x86: move switch_to macro to system.h
This patch moves the switch_to() macro to system.h As those macros are fundamentally different between i386 and x86_64, they are enclosed around an ifdef. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/system_64.h')
-rw-r--r--include/asm-x86/system_64.h43
1 files changed, 0 insertions, 43 deletions
diff --git a/include/asm-x86/system_64.h b/include/asm-x86/system_64.h
index 9def35eb75e..97fa251ccb2 100644
--- a/include/asm-x86/system_64.h
+++ b/include/asm-x86/system_64.h
@@ -4,49 +4,6 @@
#include <asm/segment.h>
#include <asm/cmpxchg.h>
-#ifdef __KERNEL__
-
-/* entries in ARCH_DLINFO: */
-#ifdef CONFIG_IA32_EMULATION
-# define AT_VECTOR_SIZE_ARCH 2
-#else
-# define AT_VECTOR_SIZE_ARCH 1
-#endif
-
-#define __SAVE(reg,offset) "movq %%" #reg ",(14-" #offset ")*8(%%rsp)\n\t"
-#define __RESTORE(reg,offset) "movq (14-" #offset ")*8(%%rsp),%%" #reg "\n\t"
-
-/* frame pointer must be last for get_wchan */
-#define SAVE_CONTEXT "pushf ; pushq %%rbp ; movq %%rsi,%%rbp\n\t"
-#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp ; popf\t"
-
-#define __EXTRA_CLOBBER \
- ,"rcx","rbx","rdx","r8","r9","r10","r11","r12","r13","r14","r15"
-
-/* Save restore flags to clear handle leaking NT */
-#define switch_to(prev,next,last) \
- asm volatile(SAVE_CONTEXT \
- "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */ \
- "movq %P[threadrsp](%[next]),%%rsp\n\t" /* restore RSP */ \
- "call __switch_to\n\t" \
- ".globl thread_return\n" \
- "thread_return:\n\t" \
- "movq %%gs:%P[pda_pcurrent],%%rsi\n\t" \
- "movq %P[thread_info](%%rsi),%%r8\n\t" \
- LOCK_PREFIX "btr %[tif_fork],%P[ti_flags](%%r8)\n\t" \
- "movq %%rax,%%rdi\n\t" \
- "jc ret_from_fork\n\t" \
- RESTORE_CONTEXT \
- : "=a" (last) \
- : [next] "S" (next), [prev] "D" (prev), \
- [threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \
- [ti_flags] "i" (offsetof(struct thread_info, flags)),\
- [tif_fork] "i" (TIF_FORK), \
- [thread_info] "i" (offsetof(struct task_struct, stack)), \
- [pda_pcurrent] "i" (offsetof(struct x8664_pda, pcurrent)) \
- : "memory", "cc" __EXTRA_CLOBBER)
-
-#endif /* __KERNEL__ */
static inline unsigned long read_cr8(void)
{