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| author | Michal Simek <monstr@monstr.eu> | 2009-04-21 14:08:47 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2009-04-23 16:27:33 +0200 |
| commit | 2921e2bd679949a7892d308b414e6a3b3c705260 (patch) | |
| tree | 4be639979e46583a1c6e2d12b26a78b989a8c49c | |
| parent | microblaze: Do not check use_dcache (diff) | |
| download | linux-2921e2bd679949a7892d308b414e6a3b3c705260.tar.xz linux-2921e2bd679949a7892d308b414e6a3b3c705260.zip | |
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>
| -rw-r--r-- | arch/microblaze/include/asm/entry.h | 3 | ||||
| -rw-r--r-- | arch/microblaze/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/microblaze/kernel/signal.c | 14 |
3 files changed, 15 insertions, 4 deletions
diff --git a/arch/microblaze/include/asm/entry.h b/arch/microblaze/include/asm/entry.h index 1019d88b8129..e4c3aef884df 100644 --- a/arch/microblaze/include/asm/entry.h +++ b/arch/microblaze/include/asm/entry.h @@ -31,4 +31,7 @@ DECLARE_PER_CPU(unsigned int, R11_SAVE); /* Temp variable for entry */ DECLARE_PER_CPU(unsigned int, CURRENT_SAVE); /* Saved current pointer */ # endif /* __ASSEMBLY__ */ +/* noMMU hasn't any space for args */ +# define STATE_SAVE_ARG_SPACE (0) + #endif /* _ASM_MICROBLAZE_ENTRY_H */ diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h index 89aa3956929b..9329029d2614 100644 --- a/arch/microblaze/include/asm/processor.h +++ b/arch/microblaze/include/asm/processor.h @@ -15,6 +15,8 @@ #include <asm/setup.h> #include <asm/registers.h> #include <asm/segment.h> +#include <asm/entry.h> +#include <asm/current.h> # ifndef __ASSEMBLY__ /* from kernel/cpu/mb.c */ diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c index 3889cf45fa71..40d36931e363 100644 --- a/arch/microblaze/kernel/signal.c +++ b/arch/microblaze/kernel/signal.c @@ -178,7 +178,9 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc, int *rval_p) 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 @@ badframe: 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 @@ static void setup_frame(int sig, struct k_sigaction *ka, 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 @@ 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; + 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 */ |