setjmp: optimize x86 longjmp epilogues

[musl] / src / setjmp / x86_64 / longjmp.s

diff --git a/src/setjmp/x86_64/longjmp.s b/src/setjmp/x86_64/longjmp.s
index e709aca..bb88afa 100644 (file)
--- a/src/setjmp/x86_64/longjmp.s
+++ b/src/setjmp/x86_64/longjmp.s
@@ -16,7 +16,5 @@ longjmp:
        mov 24(%rdi),%r13
        mov 32(%rdi),%r14
        mov 40(%rdi),%r15
-       mov 48(%rdi),%rdx       /* this ends up being the stack pointer */
-       mov %rdx,%rsp
-       mov 56(%rdi),%rdx       /* this is the instruction pointer */
-       jmp *%rdx               /* goto saved address without altering rsp */
+       mov 48(%rdi),%rsp
+       jmp *56(%rdi)           /* goto saved address without altering rsp */