From 2921e2bd679949a7892d308b414e6a3b3c705260 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 21 Apr 2009 14:08:47 +0200 Subject: [PATCH] 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 --- arch/microblaze/include/asm/entry.h | 3 +++ arch/microblaze/include/asm/processor.h | 2 ++ 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 1019d88b812..e4c3aef884d 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 89aa3956929..9329029d261 100644 --- a/arch/microblaze/include/asm/processor.h +++ b/arch/microblaze/include/asm/processor.h @@ -15,6 +15,8 @@ #include #include #include +#include +#include # ifndef __ASSEMBLY__ /* from kernel/cpu/mb.c */ diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c index 3889cf45fa7..40d36931e36 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 */ -- 2.11.4.GIT