diff --git a/src/pkg/syscall/zsyscall_linux_arm.go b/src/pkg/syscall/zsyscall_linux_arm.go
index b2e27c79659..71110857733 100644
--- a/src/pkg/syscall/zsyscall_linux_arm.go
+++ b/src/pkg/syscall/zsyscall_linux_arm.go
@@ -1,4 +1,4 @@
-// mksyscall.sh -l32 syscall_linux.go syscall_linux_arm.go
+// mksyscall.sh -b32 syscall_linux.go syscall_linux_arm.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
 package syscall
@@ -209,7 +209,7 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (errno int) {
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 func Fallocate(fd int, mode uint32, off int64, len int64) (errno int) {
-	_, _, e1 := Syscall6(SYS_FALLOCATE, uintptr(fd), uintptr(mode), uintptr(off), uintptr(off>>32), uintptr(len), uintptr(len>>32))
+	_, _, e1 := Syscall6(SYS_FALLOCATE, uintptr(fd), uintptr(mode), uintptr(off>>32), uintptr(off), uintptr(len>>32), uintptr(len))
 	errno = int(e1)
 	return
 }
@@ -604,7 +604,7 @@ func Sysinfo(info *Sysinfo_t) (errno int) {
 
 func Tee(rfd int, wfd int, len int, flags int) (n int64, errno int) {
 	r0, r1, e1 := Syscall6(SYS_TEE, uintptr(rfd), uintptr(wfd), uintptr(len), uintptr(flags), 0, 0)
-	n = int64(int64(r1)<<32 | int64(r0))
+	n = int64(int64(r0)<<32 | int64(r1))
 	errno = int(e1)
 	return
 }
@@ -881,7 +881,7 @@ func Fstatfs(fd int, buf *Statfs_t) (errno int) {
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 func Ftruncate(fd int, length int64) (errno int) {
-	_, _, e1 := Syscall(SYS_FTRUNCATE64, uintptr(fd), uintptr(length), uintptr(length>>32))
+	_, _, e1 := Syscall(SYS_FTRUNCATE64, uintptr(fd), uintptr(length>>32), uintptr(length))
 	errno = int(e1)
 	return
 }
@@ -1043,7 +1043,7 @@ func Statfs(path string, buf *Statfs_t) (errno int) {
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 func Truncate(path string, length int64) (errno int) {
-	_, _, e1 := Syscall(SYS_TRUNCATE64, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(length), uintptr(length>>32))
+	_, _, e1 := Syscall(SYS_TRUNCATE64, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(length>>32), uintptr(length))
 	errno = int(e1)
 	return
 }