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Commit 17f3324c authored by Michal Simek's avatar Michal Simek
Browse files

microblaze_mmu_v2: Traps MMU update 



Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 65504a47

arch/microblaze/include/asm/exceptions.h

+8 −16
Original line number Diff line number Diff line 
/*

 * 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);

arch/microblaze/kernel/traps.c

+34 −0
Original line number Diff line number Diff line
@@ -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