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microblaze_mmu_v2: Traps MMU update

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Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2009-05-26 16:30:27 +02:00
parent 65504a47e0
commit 17f3324c3e
2 changed files with 42 additions and 16 deletions
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24
arch/microblaze/include/asm/exceptions.h
View file

@ -1,8 +1,8 @@
/*
* Preliminary support for HW exception handing for Microblaze
*
* Copyright (C) 2008 Michal Simek
* Copyright (C) 2008 PetaLogix
* Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
* Copyright (C) 2008-2009 PetaLogix
* Copyright (C) 2005 John Williams <jwilliams@itee.uq.edu.au>
*
* This file is subject to the terms and conditions of the GNU General
@ -64,21 +64,13 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
void die(const char *str, struct pt_regs *fp, long err);
void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr);
#if defined(CONFIG_XMON)
extern void xmon(struct pt_regs *regs);
extern int xmon_bpt(struct pt_regs *regs);
extern int xmon_sstep(struct pt_regs *regs);
extern int xmon_iabr_match(struct pt_regs *regs);
extern int xmon_dabr_match(struct pt_regs *regs);
extern void (*xmon_fault_handler)(struct pt_regs *regs);
#ifdef CONFIG_MMU
void __bug(const char *file, int line, void *data);
int bad_trap(int trap_num, struct pt_regs *regs);
int debug_trap(struct pt_regs *regs);
#endif /* CONFIG_MMU */
void (*debugger)(struct pt_regs *regs) = xmon;
int (*debugger_bpt)(struct pt_regs *regs) = xmon_bpt;
int (*debugger_sstep)(struct pt_regs *regs) = xmon_sstep;
int (*debugger_iabr_match)(struct pt_regs *regs) = xmon_iabr_match;
int (*debugger_dabr_match)(struct pt_regs *regs) = xmon_dabr_match;
void (*debugger_fault_handler)(struct pt_regs *regs);
#elif defined(CONFIG_KGDB)
#if defined(CONFIG_KGDB)
void (*debugger)(struct pt_regs *regs);
int (*debugger_bpt)(struct pt_regs *regs);
int (*debugger_sstep)(struct pt_regs *regs);

34
arch/microblaze/kernel/traps.c
View file

@ -97,3 +97,37 @@ void dump_stack(void)
show_stack(NULL, NULL);
}
EXPORT_SYMBOL(dump_stack);
#ifdef CONFIG_MMU
void __bug(const char *file, int line, void *data)
{
if (data)
printk(KERN_CRIT "kernel BUG at %s:%d (data = %p)!\n",
file, line, data);
else
printk(KERN_CRIT "kernel BUG at %s:%d!\n", file, line);
machine_halt();
}
int bad_trap(int trap_num, struct pt_regs *regs)
{
printk(KERN_CRIT
"unimplemented trap %d called at 0x%08lx, pid %d!\n",
trap_num, regs->pc, current->pid);
return -ENOSYS;
}
int debug_trap(struct pt_regs *regs)
{
int i;
printk(KERN_CRIT "debug trap\n");
for (i = 0; i < 32; i++) {
/* printk("r%i:%08X\t",i,regs->gpr[i]); */
if ((i % 4) == 3)
printk(KERN_CRIT "\n");
}
printk(KERN_CRIT "pc:%08lX\tmsr:%08lX\n", regs->pc, regs->msr);
return -ENOSYS;
}
#endif