projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | void show_trace(unsigned long * stack) | |
| 16 | { | |
| 17 | /* XXX: Copy the CONFIG_FRAME_POINTER stack-walking backtrace from | |
| 18 | * arch/i386/kernel/traps.c, and then move this to sys-i386/sysrq.c.*/ | |
| 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 | ||
| 39 | /* | |
| 40 | * stack dumps generator - this is used by arch-independent code. | |
| 41 | * And this is identical to i386 currently. | |
| 42 | */ | |
| 43 | void dump_stack(void) | |
| 44 | { | |
| 45 | unsigned long stack; | |
| 46 | ||
| 47 | show_trace(&stack); | |
| 48 | } | |
| 49 | EXPORT_SYMBOL(dump_stack); | |
| 50 | ||
| 51 | /*Stolen from arch/i386/kernel/traps.c */ | |
| 52 | static int kstack_depth_to_print = 24; | |
| 53 | ||
| 54 | /* This recently started being used in arch-independent code too, as in | |
| 55 | * kernel/sched.c.*/ | |
| 56 | void show_stack(struct task_struct *task, unsigned long *esp) | |
| 57 | { | |
| 58 | unsigned long *stack; | |
| 59 | int i; | |
| 60 | ||
| 61 | if (esp == NULL) { | |
| 62 | if (task != current) { | |
| 63 | esp = (unsigned long *) KSTK_ESP(task); | |
| 64 | /* Which one? No actual difference - just coding style.*/ | |
| 65 | //esp = (unsigned long *) PT_REGS_IP(&task->thread.regs); | |
| 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 | show_trace(esp); | |
| 81 | } |