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/*
* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/config.h"
#include "linux/sched.h"
#include "linux/kernel.h"
#include "linux/module.h"
#include "linux/kallsyms.h"
#include "asm/page.h"
#include "asm/processor.h"
#include "sysrq.h"
#include "user_util.h"
/* Catch non-i386 SUBARCH's. */
#if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT)
void show_trace(struct task_struct *task, unsigned long * stack)
{
unsigned long addr;
if (!stack) {
stack = (unsigned long*) &stack;
WARN_ON(1);
}
printk("Call Trace: \n");
while (((long) stack & (THREAD_SIZE-1)) != 0) {
addr = *stack;
if (__kernel_text_address(addr)) {
printk("%08lx: [<%08lx>]", (unsigned long) stack, addr);
print_symbol(" %s", addr);
printk("\n");
}
stack++;
}
printk("\n");
}
#endif
/*
* stack dumps generator - this is used by arch-independent code.
* And this is identical to i386 currently.
*/
void dump_stack(void)
{
unsigned long stack;
show_trace(current, &stack);
}
EXPORT_SYMBOL(dump_stack);
/*Stolen from arch/i386/kernel/traps.c */
static int kstack_depth_to_print = 24;
/* This recently started being used in arch-independent code too, as in
* kernel/sched.c.*/
void show_stack(struct task_struct *task, unsigned long *esp)
{
unsigned long *stack;
int i;
if (esp == NULL) {
if (task != current && task != NULL) {
/* XXX: Isn't this bogus? I.e. isn't this the
* *userspace* stack of this task? If not so, use this
* even when task == current (as in i386).
*/
esp = (unsigned long *) KSTK_ESP(task);
/* Which one? No actual difference - just coding style.*/
//esp = (unsigned long *) PT_REGS_IP(&task->thread.regs);
} else {
esp = (unsigned long *) &esp;
}
}
stack = esp;
for(i = 0; i < kstack_depth_to_print; i++) {
if (kstack_end(stack))
break;
if (i && ((i % 8) == 0))
printk("\n ");
printk("%08lx ", *stack++);
}
printk("Call Trace: \n");
show_trace(current, esp);
}
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