microblaze: Remove r0_ram pointer and PTO alignment
r0_ram pool was used for saving/restoring register
content if hw exception happen. This poll was replaced by
pt_pool_space with PT_SIZE size.
Based on this change SAVE_STATE_ARG_SPACE was removed which
caused that PTO offset is zero that's why is also removed.
r0_ram space was used as scratchpad by v850. In early
Microblaze Linux developing phase was this part of code
blindly copied.
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index d8d3bb3..580d052 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -93,7 +93,7 @@
asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
{
struct rt_sigframe __user *frame =
- (struct rt_sigframe __user *)(regs->r1 + STATE_SAVE_ARG_SPACE);
+ (struct rt_sigframe __user *)(regs->r1);
sigset_t set;
int rval;
@@ -247,7 +247,7 @@
goto give_sigsegv;
/* Set up registers for signal handler */
- regs->r1 = (unsigned long) frame - STATE_SAVE_ARG_SPACE;
+ regs->r1 = (unsigned long) frame;
/* Signal handler args: */
regs->r5 = signal; /* arg 0: signum */