fix broken sigsetjmp on x86_64

diff --git a/src/signal/x86_64/sigsetjmp.s b/src/signal/x86_64/sigsetjmp.s
index 0a45078..ac02adb 100644 (file)
--- a/src/signal/x86_64/sigsetjmp.s
+++ b/src/signal/x86_64/sigsetjmp.s
@@ -1,11 +1,13 @@
 /* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */
 .global sigsetjmp
 sigsetjmp:
-       test %rsi,%rsi
-       jz 1f              /* if save == 0, just goto setjmp */
-       movq %rsi,64(%rdi) /* move save -> jmp_buf[8] */
-       addq $72,%rdi      /* add sizeof(jmp_buf) to rdi */
-       movl $0,%esi       /* arg2 = 0 */
-       movl $2,%edx       /* arg3 = 2 */
-       call sigprocmask   /* sigprocmask(jmp_buf, 0, 2) */
+       andl %esi,%esi
+       movq %rsi,64(%rdi)
+       jz 1f
+       pushq %rdi
+       leaq 72(%rdi),%rsi
+       xorl %edx,%edx
+       movl $2,%edi
+       call sigprocmask
+       popq %rdi
 1:     jmp setjmp