---

yaml
---
r: 120931
b: refs/heads/master
c: 4a61204
h: refs/heads/master
i:
  120929: a3db77f
  120927: 220cf25
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 15002fa9bf3a79ac9dcafba7ff308586936088b2
+refs/heads/master: 4a61204856e8b28e9f5489a7875cb3a60afd1e43

trunk/arch/x86/kernel/signal_32.c

@@ -45,6 +45,28 @@
 # define FIX_EFLAGS	__FIX_EFLAGS
 #endif
 
+static const struct {
+	u16 poplmovl;
+	u32 val;
+	u16 int80;
+} __attribute__((packed)) retcode = {
+	0xb858,		/* popl %eax; movl $..., %eax */
+	__NR_sigreturn,
+	0x80cd,		/* int $0x80 */
+};
+
+static const struct {
+	u8  movl;
+	u32 val;
+	u16 int80;
+	u8  pad;
+} __attribute__((packed)) rt_retcode = {
+	0xb8,		/* movl $..., %eax */
+	__NR_rt_sigreturn,
+	0x80cd,		/* int $0x80 */
+	0
+};
+
 /*
  * Atomically swap in the new signal mask, and wait for a signal.
  */
@@ -427,9 +449,7 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
 	 * reasons and because gdb uses it as a signature to notice
 	 * signal handler stack frames.
 	 */
-	err |= __put_user(0xb858, (short __user *)(frame->retcode+0));
-	err |= __put_user(__NR_sigreturn, (int __user *)(frame->retcode+2));
-	err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
+	err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode);
 
 	if (err)
 		return -EFAULT;
@@ -498,9 +518,7 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	 * reasons and because gdb uses it as a signature to notice
 	 * signal handler stack frames.
 	 */
-	err |= __put_user(0xb8, (char __user *)(frame->retcode+0));
-	err |= __put_user(__NR_rt_sigreturn, (int __user *)(frame->retcode+1));
-	err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
+	err |= __put_user(*((u64 *)&rt_retcode), (u64 *)frame->retcode);
 
 	if (err)
 		return -EFAULT;