1 /* 2 * Copyright (C) 2001 Jeff Dike (jdike@karaya.com) 3 * Licensed under the GPL 4 */ 5 6 #include "linux/config.h" 7 #include "linux/sched.h" 8 #include "linux/kernel.h" 9 #include "linux/module.h" 10 #include "linux/kallsyms.h" 11 #include "asm/page.h" 12 #include "asm/processor.h" 13 #include "sysrq.h" 14 #include "user_util.h" 15 16 /* Catch non-i386 SUBARCH's. */ 17 #if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT) 18 void show_trace(struct task_struct *task, unsigned long * stack) 19 { 20 unsigned long addr; 21 22 if (!stack) { 23 stack = (unsigned long*) &stack; 24 WARN_ON(1); 25 } 26 27 printk("Call Trace: \n"); 28 while (((long) stack & (THREAD_SIZE-1)) != 0) { 29 addr = *stack; 30 if (__kernel_text_address(addr)) { 31 printk("%08lx: [<%08lx>]", (unsigned long) stack, addr); 32 print_symbol(" %s", addr); 33 printk("\n"); 34 } 35 stack++; 36 } 37 printk("\n"); 38 } 39 #endif 40 41 /* 42 * stack dumps generator - this is used by arch-independent code. 43 * And this is identical to i386 currently. 44 */ 45 void dump_stack(void) 46 { 47 unsigned long stack; 48 49 show_trace(current, &stack); 50 } 51 EXPORT_SYMBOL(dump_stack); 52 53 /*Stolen from arch/i386/kernel/traps.c */ 54 static int kstack_depth_to_print = 24; 55 56 /* This recently started being used in arch-independent code too, as in 57 * kernel/sched.c.*/ 58 void show_stack(struct task_struct *task, unsigned long *esp) 59 { 60 unsigned long *stack; 61 int i; 62 63 if (esp == NULL) { 64 if (task != current && task != NULL) { 65 esp = (unsigned long *) KSTK_ESP(task); 66 } else { 67 esp = (unsigned long *) &esp; 68 } 69 } 70 71 stack = esp; 72 for(i = 0; i < kstack_depth_to_print; i++) { 73 if (kstack_end(stack)) 74 break; 75 if (i && ((i % 8) == 0)) 76 printk("\n "); 77 printk("%08lx ", *stack++); 78 } 79 80 printk("Call Trace: \n"); 81 show_trace(task, esp); 82 } 83