2 * arch/sh/mm/fault-nommu.c
4 * Copyright (C) 2002 - 2007 Paul Mundt
6 * Based on linux/arch/sh/mm/fault.c:
7 * Copyright (C) 1999 Niibe Yutaka
9 * Released under the terms of the GNU GPL v2.0.
11 #include <linux/kernel.h>
13 #include <linux/hardirq.h>
14 #include <linux/kprobes.h>
15 #include <asm/system.h>
16 #include <asm/ptrace.h>
20 * This routine handles page faults. It determines the address,
21 * and the problem, and then passes it off to one of the appropriate
24 asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
25 unsigned long writeaccess,
26 unsigned long address)
31 #if defined(CONFIG_SH_KGDB)
32 if (kgdb_nofault && kgdb_bus_err_hook)
37 * Oops. The kernel tried to access some bad page. We'll have to
38 * terminate things with extreme prejudice.
41 if (address < PAGE_SIZE) {
42 printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference");
44 printk(KERN_ALERT "Unable to handle kernel paging request");
47 printk(" at virtual address %08lx\n", address);
48 printk(KERN_ALERT "pc = %08lx\n", regs->pc);
50 die("Oops", regs, writeaccess);
54 asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
55 unsigned long writeaccess,
56 unsigned long address)
58 #if defined(CONFIG_SH_KGDB)
59 if (kgdb_nofault && kgdb_bus_err_hook)
63 return (address >= TASK_SIZE);