ia64/linux-2.6.18-xen.hg

view arch/cris/arch-v10/kernel/traps.c @ 647:a5bb490065f6

Fix the build after public header sync.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Aug 13 14:01:49 2008 +0100 (2008-08-13)
parents 831230e53067
children
line source
1 /* $Id: traps.c,v 1.4 2005/04/24 18:47:55 starvik Exp $
2 *
3 * linux/arch/cris/arch-v10/traps.c
4 *
5 * Heler functions for trap handlers
6 *
7 * Copyright (C) 2000-2002 Axis Communications AB
8 *
9 * Authors: Bjorn Wesen
10 * Hans-Peter Nilsson
11 *
12 */
14 #include <linux/ptrace.h>
15 #include <asm/uaccess.h>
16 #include <asm/arch/sv_addr_ag.h>
18 extern int raw_printk(const char *fmt, ...);
20 void
21 show_registers(struct pt_regs * regs)
22 {
23 /* We either use rdusp() - the USP register, which might not
24 correspond to the current process for all cases we're called,
25 or we use the current->thread.usp, which is not up to date for
26 the current process. Experience shows we want the USP
27 register. */
28 unsigned long usp = rdusp();
30 raw_printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
31 regs->irp, regs->srp, regs->dccr, usp, regs->mof );
32 raw_printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
33 regs->r0, regs->r1, regs->r2, regs->r3);
34 raw_printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n",
35 regs->r4, regs->r5, regs->r6, regs->r7);
36 raw_printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n",
37 regs->r8, regs->r9, regs->r10, regs->r11);
38 raw_printk("r12: %08lx r13: %08lx oR10: %08lx sp: %08lx\n",
39 regs->r12, regs->r13, regs->orig_r10, regs);
40 raw_printk("R_MMU_CAUSE: %08lx\n", (unsigned long)*R_MMU_CAUSE);
41 raw_printk("Process %s (pid: %d, stackpage=%08lx)\n",
42 current->comm, current->pid, (unsigned long)current);
44 /*
45 * When in-kernel, we also print out the stack and code at the
46 * time of the fault..
47 */
48 if (! user_mode(regs)) {
49 int i;
51 show_stack(NULL, (unsigned long*)usp);
53 /* Dump kernel stack if the previous dump wasn't one. */
54 if (usp != 0)
55 show_stack (NULL, NULL);
57 raw_printk("\nCode: ");
58 if(regs->irp < PAGE_OFFSET)
59 goto bad;
61 /* Often enough the value at regs->irp does not point to
62 the interesting instruction, which is most often the
63 _previous_ instruction. So we dump at an offset large
64 enough that instruction decoding should be in sync at
65 the interesting point, but small enough to fit on a row
66 (sort of). We point out the regs->irp location in a
67 ksymoops-friendly way by wrapping the byte for that
68 address in parentheses. */
69 for(i = -12; i < 12; i++)
70 {
71 unsigned char c;
72 if(__get_user(c, &((unsigned char*)regs->irp)[i])) {
73 bad:
74 raw_printk(" Bad IP value.");
75 break;
76 }
78 if (i == 0)
79 raw_printk("(%02x) ", c);
80 else
81 raw_printk("%02x ", c);
82 }
83 raw_printk("\n");
84 }
85 }
87 /* Called from entry.S when the watchdog has bitten
88 * We print out something resembling an oops dump, and if
89 * we have the nice doggy development flag set, we halt here
90 * instead of rebooting.
91 */
93 extern void reset_watchdog(void);
94 extern void stop_watchdog(void);
97 void
98 watchdog_bite_hook(struct pt_regs *regs)
99 {
100 #ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
101 local_irq_disable();
102 stop_watchdog();
103 show_registers(regs);
104 while(1) /* nothing */;
105 #else
106 show_registers(regs);
107 #endif
108 }
110 /* This is normally the 'Oops' routine */
111 void
112 die_if_kernel(const char * str, struct pt_regs * regs, long err)
113 {
114 if(user_mode(regs))
115 return;
117 #ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
118 /* This printout might take too long and trigger the
119 * watchdog normally. If we're in the nice doggy
120 * development mode, stop the watchdog during printout.
121 */
122 stop_watchdog();
123 #endif
125 raw_printk("%s: %04lx\n", str, err & 0xffff);
127 show_registers(regs);
129 #ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
130 reset_watchdog();
131 #endif
132 do_exit(SIGSEGV);
133 }
135 void arch_enable_nmi(void)
136 {
137 asm volatile("setf m");
138 }