commit 2921e2bd679949a7892d308b414e6a3b3c705260
author Michal Simek <monstr@monstr.eu> Tue Apr 21 14:08:47 2009 +0200
committer Michal Simek <monstr@monstr.eu> Thu Apr 23 16:27:33 2009 +0200
tree 4be639979e46583a1c6e2d12b26a78b989a8c49c
parent 6dfb79aa114ac69032f3931235ffc90799e9630b

microblaze: Add STATE_SAVE_ARG_SPACE for noMMU kernel too

For noMMU kernel this change nothing bring but this change
helps with MMU synchronization.

Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/kernel/signal.c

diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 3889cf4..40d3693 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -178,7 +178,9 @@
 
 asmlinkage int sys_sigreturn(struct pt_regs *regs)
 {
-	struct sigframe *frame = (struct sigframe *)regs->r1;
+	struct sigframe *frame =
+			(struct sigframe *)(regs->r1 + STATE_SAVE_ARG_SPACE);
+
 	sigset_t set;
 	int rval;
 
@@ -209,7 +211,9 @@
 
 asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
 {
-	struct rt_sigframe *frame = (struct rt_sigframe *)regs->r1;
+	struct rt_sigframe *frame =
+			(struct rt_sigframe *)(regs->r1 + STATE_SAVE_ARG_SPACE);
+
 	sigset_t set;
 	stack_t st;
 	int rval;
@@ -336,7 +340,8 @@
 		goto give_sigsegv;
 
 	/* Set up registers for signal handler */
-	regs->r1 = (unsigned long) frame;
+	regs->r1 = (unsigned long) frame - STATE_SAVE_ARG_SPACE;
+
 	/* Signal handler args: */
 	regs->r5 = signal; /* Arg 0: signum */
 	regs->r6 = (unsigned long) &frame->sc; /* arg 1: sigcontext */
@@ -414,7 +419,8 @@
 		goto give_sigsegv;
 
 	/* Set up registers for signal handler */
-	regs->r1 = (unsigned long) frame;
+	regs->r1 = (unsigned long) frame - STATE_SAVE_ARG_SPACE;
+
 	/* Signal handler args: */
 	regs->r5 = signal; /* arg 0: signum */
 	regs->r6 = (unsigned long) &frame->info; /* arg 1: siginfo */