X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fsetjmp%2Fx86_64%2Flongjmp.s;h=1b2661c3e5a948a0d957ca84ebf17043b3993ed5;hb=c5f4b2dfea320356f69445dc1adf8f73596a3c36;hp=bb88afa16ccd90005f7348b2391e4638f99334c9;hpb=59b64ff686cef2a87e9552658b2c8d2531f87176;p=musl

diff --git a/src/setjmp/x86_64/longjmp.s b/src/setjmp/x86_64/longjmp.s
index bb88afa1..1b2661c3 100644
--- a/src/setjmp/x86_64/longjmp.s
+++ b/src/setjmp/x86_64/longjmp.s
@@ -5,11 +5,9 @@
 .type longjmp,@function
 _longjmp:
 longjmp:
-	mov %esi,%eax           /* val will be longjmp return */
-	test %esi,%esi
-	jnz 1f
-	inc %eax                /* if val==0, val=1 per longjmp semantics */
-1:
+	xor %eax,%eax
+	cmp $1,%esi             /* CF = val ? 0 : 1 */
+	adc %esi,%eax           /* eax = val + !val */
 	mov (%rdi),%rbx         /* rdi is the jmp_buf, restore regs from it */
 	mov 8(%rdi),%rbp
 	mov 16(%rdi),%r12