diff options
Diffstat (limited to 'include/asm-x86_64/system.h')
| -rw-r--r-- | include/asm-x86_64/system.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-x86_64/system.h b/include/asm-x86_64/system.h index 6bf170bceae1..bd376bc8c4ab 100644 --- a/include/asm-x86_64/system.h +++ b/include/asm-x86_64/system.h | |||
| @@ -14,12 +14,13 @@ | |||
| 14 | #define __RESTORE(reg,offset) "movq (14-" #offset ")*8(%%rsp),%%" #reg "\n\t" | 14 | #define __RESTORE(reg,offset) "movq (14-" #offset ")*8(%%rsp),%%" #reg "\n\t" |
| 15 | 15 | ||
| 16 | /* frame pointer must be last for get_wchan */ | 16 | /* frame pointer must be last for get_wchan */ |
| 17 | #define SAVE_CONTEXT "pushq %%rbp ; movq %%rsi,%%rbp\n\t" | 17 | #define SAVE_CONTEXT "pushf ; pushq %%rbp ; movq %%rsi,%%rbp\n\t" |
| 18 | #define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp\n\t" | 18 | #define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp ; popf\t" |
| 19 | 19 | ||
| 20 | #define __EXTRA_CLOBBER \ | 20 | #define __EXTRA_CLOBBER \ |
| 21 | ,"rcx","rbx","rdx","r8","r9","r10","r11","r12","r13","r14","r15" | 21 | ,"rcx","rbx","rdx","r8","r9","r10","r11","r12","r13","r14","r15" |
| 22 | 22 | ||
| 23 | /* Save restore flags to clear handle leaking NT */ | ||
| 23 | #define switch_to(prev,next,last) \ | 24 | #define switch_to(prev,next,last) \ |
| 24 | asm volatile(SAVE_CONTEXT \ | 25 | asm volatile(SAVE_CONTEXT \ |
| 25 | "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */ \ | 26 | "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */ \ |