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82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
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/*
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* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#include "linux/sched.h"
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#include "linux/kernel.h"
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#include "linux/module.h"
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#include "linux/kallsyms.h"
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#include "asm/page.h"
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#include "asm/processor.h"
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#include "sysrq.h"
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#include "user_util.h"
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void show_trace(unsigned long * stack)
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{
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/* XXX: Copy the CONFIG_FRAME_POINTER stack-walking backtrace from
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* arch/i386/kernel/traps.c, and then move this to sys-i386/sysrq.c.*/
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unsigned long addr;
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if (!stack) {
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stack = (unsigned long*) &stack;
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WARN_ON(1);
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}
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printk("Call Trace: \n");
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while (((long) stack & (THREAD_SIZE-1)) != 0) {
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addr = *stack;
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if (__kernel_text_address(addr)) {
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printk("%08lx: [<%08lx>]", (unsigned long) stack, addr);
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print_symbol(" %s", addr);
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printk("\n");
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}
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stack++;
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}
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printk("\n");
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}
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/*
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* stack dumps generator - this is used by arch-independent code.
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* And this is identical to i386 currently.
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*/
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void dump_stack(void)
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{
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unsigned long stack;
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show_trace(&stack);
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}
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EXPORT_SYMBOL(dump_stack);
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/*Stolen from arch/i386/kernel/traps.c */
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static int kstack_depth_to_print = 24;
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/* This recently started being used in arch-independent code too, as in
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* kernel/sched.c.*/
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void show_stack(struct task_struct *task, unsigned long *esp)
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{
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unsigned long *stack;
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int i;
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if (esp == NULL) {
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if (task != current) {
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esp = (unsigned long *) KSTK_ESP(task);
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/* Which one? No actual difference - just coding style.*/
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//esp = (unsigned long *) PT_REGS_IP(&task->thread.regs);
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} else {
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esp = (unsigned long *) &esp;
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}
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}
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stack = esp;
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for(i = 0; i < kstack_depth_to_print; i++) {
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if (kstack_end(stack))
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break;
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if (i && ((i % 8) == 0))
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printk("\n ");
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printk("%08lx ", *stack++);
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}
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show_trace(esp);
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}
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