Update for AMD64. Depend on %rdi (first syscall argument) being preserved

across a "syscall"-style syscall
2003-04-30 18:13:48 +00:00 · 2003-04-30 18:13:48 +00:00 · 2c555e9f24
commit 2c555e9f24
parent 44164f8178
1 changed files with 3 additions and 4 deletions
--- a/lib/libc/amd64/sys/pipe.S
+++ b/lib/libc/amd64/sys/pipe.S
@ -43,8 +43,7 @@ __FBSDID("$FreeBSD$");
 #include "SYS.h"

 SYSCALL(pipe)
-	movl	4(%esp),%ecx
-	movl	%eax,(%ecx)
-	movl	%edx,4(%ecx)
-	movl	$0,%eax
+	movl	%eax,(%rdi)	/* %rdi is preserved by syscall */
+	movl	%edx,4(%rdi)
+	movq	$0,%rax
 	ret