1 /* 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 15 /* Catch non-i386 SUBARCH's. */ 16 #if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT) 17 void show_trace(struct task_struct *task, unsigned long * stack) 18 { 19 unsigned long addr; 20 21 if (!stack) { 22 stack = (unsigned long*) &stack; 23 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 } 38 #endif 39 40 /* 41 * stack dumps generator - this is used by arch-independent code. 42 * And this is identical to i386 currently. 43 */ 44 void dump_stack(void) 45 { 46 unsigned long stack; 47 48 show_trace(current, &stack); 49 } 50 EXPORT_SYMBOL(dump_stack); 51 52 /*Stolen from arch/i386/kernel/traps.c */ 53 static int kstack_depth_to_print = 24; 54 55 /* This recently started being used in arch-independent code too, as in 56 * kernel/sched.c.*/ 57 void show_stack(struct task_struct *task, unsigned long *esp) 58 { 59 unsigned long *stack; 60 int i; 61 62 if (esp == NULL) { 63 if (task != current && task != NULL) { 64 esp = (unsigned long *) KSTK_ESP(task); 65 } 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 79 printk("Call Trace: \n"); 80 show_trace(task, esp); 81 } 82