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microblaze: Remove r0_ram pointer and PTO alignment

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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>
This commit is contained in:
Michal Simek 2011-01-31 15:10:04 +01:00
parent d8748e73e8
commit 6e83557c38
7 changed files with 157 additions and 200 deletions
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4
arch/microblaze/kernel/signal.c
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@ -93,7 +93,7 @@ static int restore_sigcontext(struct pt_regs *regs,
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 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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 */