blob: f9e02b31a97af3dde7bb23437013d6e628b85761 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#include "linux/sched.h"
7#include "linux/kernel.h"
8#include "linux/module.h"
9#include "linux/kallsyms.h"
10#include "asm/page.h"
11#include "asm/processor.h"
12#include "sysrq.h"
13#include "user_util.h"
14
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070015/* Catch non-i386 SUBARCH's. */
16#if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT)
17void show_trace(struct task_struct *task, unsigned long * stack)
Linus Torvalds1da177e2005-04-16 15:20:36 -070018{
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 unsigned long addr;
20
21 if (!stack) {
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070022 stack = (unsigned long*) &stack;
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 WARN_ON(1);
24 }
25
26 printk("Call Trace: \n");
27 while (((long) stack & (THREAD_SIZE-1)) != 0) {
28 addr = *stack;
29 if (__kernel_text_address(addr)) {
30 printk("%08lx: [<%08lx>]", (unsigned long) stack, addr);
31 print_symbol(" %s", addr);
32 printk("\n");
33 }
34 stack++;
35 }
36 printk("\n");
37}
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070038#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
40/*
41 * stack dumps generator - this is used by arch-independent code.
42 * And this is identical to i386 currently.
43 */
44void dump_stack(void)
45{
46 unsigned long stack;
47
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070048 show_trace(current, &stack);
Linus Torvalds1da177e2005-04-16 15:20:36 -070049}
50EXPORT_SYMBOL(dump_stack);
51
52/*Stolen from arch/i386/kernel/traps.c */
Jeff Dike0d0d0ed2007-02-10 01:44:15 -080053static const int kstack_depth_to_print = 24;
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
55/* This recently started being used in arch-independent code too, as in
56 * kernel/sched.c.*/
57void show_stack(struct task_struct *task, unsigned long *esp)
58{
59 unsigned long *stack;
60 int i;
61
62 if (esp == NULL) {
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070063 if (task != current && task != NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 esp = (unsigned long *) KSTK_ESP(task);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 } else {
66 esp = (unsigned long *) &esp;
67 }
68 }
69
70 stack = esp;
71 for(i = 0; i < kstack_depth_to_print; i++) {
72 if (kstack_end(stack))
73 break;
74 if (i && ((i % 8) == 0))
75 printk("\n ");
76 printk("%08lx ", *stack++);
77 }
78
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070079 printk("Call Trace: \n");
Allan Gravesfad1c452005-10-04 14:53:52 -040080 show_trace(task, esp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070081}