Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2001 - 2003 Jeff Dike (jdike@addtoit.com) | |
3 | * Licensed under the GPL | |
4 | */ | |
5 | ||
b3461034 | 6 | #include "linux/config.h" |
1da177e4 LT |
7 | #include "linux/kernel.h" |
8 | #include "linux/smp.h" | |
9 | #include "linux/sched.h" | |
b3461034 | 10 | #include "linux/kallsyms.h" |
1da177e4 LT |
11 | #include "asm/ptrace.h" |
12 | #include "sysrq.h" | |
13 | ||
b3461034 | 14 | /* This is declared by <linux/sched.h> */ |
1da177e4 LT |
15 | void show_regs(struct pt_regs *regs) |
16 | { | |
17 | printk("\n"); | |
18 | printk("EIP: %04lx:[<%08lx>] CPU: %d %s", | |
19 | 0xffff & PT_REGS_CS(regs), PT_REGS_IP(regs), | |
20 | smp_processor_id(), print_tainted()); | |
21 | if (PT_REGS_CS(regs) & 3) | |
22 | printk(" ESP: %04lx:%08lx", 0xffff & PT_REGS_SS(regs), | |
23 | PT_REGS_SP(regs)); | |
24 | printk(" EFLAGS: %08lx\n %s\n", PT_REGS_EFLAGS(regs), | |
25 | print_tainted()); | |
26 | printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n", | |
27 | PT_REGS_EAX(regs), PT_REGS_EBX(regs), | |
28 | PT_REGS_ECX(regs), | |
29 | PT_REGS_EDX(regs)); | |
30 | printk("ESI: %08lx EDI: %08lx EBP: %08lx", | |
31 | PT_REGS_ESI(regs), PT_REGS_EDI(regs), | |
32 | PT_REGS_EBP(regs)); | |
33 | printk(" DS: %04lx ES: %04lx\n", | |
34 | 0xffff & PT_REGS_DS(regs), | |
35 | 0xffff & PT_REGS_ES(regs)); | |
36 | ||
b3461034 | 37 | show_trace(NULL, (unsigned long *) ®s); |
1da177e4 | 38 | } |
b3461034 PBG |
39 | |
40 | /* Copied from i386. */ | |
41 | static inline int valid_stack_ptr(struct thread_info *tinfo, void *p) | |
42 | { | |
43 | return p > (void *)tinfo && | |
44 | p < (void *)tinfo + THREAD_SIZE - 3; | |
45 | } | |
46 | ||
47 | /* Adapted from i386 (we also print the address we read from). */ | |
48 | static inline unsigned long print_context_stack(struct thread_info *tinfo, | |
49 | unsigned long *stack, unsigned long ebp) | |
50 | { | |
51 | unsigned long addr; | |
52 | ||
53 | #ifdef CONFIG_FRAME_POINTER | |
54 | while (valid_stack_ptr(tinfo, (void *)ebp)) { | |
55 | addr = *(unsigned long *)(ebp + 4); | |
56 | printk("%08lx: [<%08lx>]", ebp + 4, addr); | |
57 | print_symbol(" %s", addr); | |
58 | printk("\n"); | |
59 | ebp = *(unsigned long *)ebp; | |
60 | } | |
61 | #else | |
62 | while (valid_stack_ptr(tinfo, stack)) { | |
63 | addr = *stack; | |
64 | if (__kernel_text_address(addr)) { | |
65 | printk("%08lx: [<%08lx>]", (unsigned long) stack, addr); | |
66 | print_symbol(" %s", addr); | |
67 | printk("\n"); | |
68 | } | |
69 | stack++; | |
70 | } | |
71 | #endif | |
72 | return ebp; | |
73 | } | |
74 | ||
75 | void show_trace(struct task_struct* task, unsigned long * stack) | |
76 | { | |
77 | unsigned long ebp; | |
78 | struct thread_info *context; | |
79 | ||
80 | /* Turn this into BUG_ON if possible. */ | |
81 | if (!stack) { | |
82 | stack = (unsigned long*) &stack; | |
83 | printk("show_trace: got NULL stack, implicit assumption task == current"); | |
84 | WARN_ON(1); | |
85 | } | |
86 | ||
87 | if (!task) | |
88 | task = current; | |
89 | ||
90 | if (task != current) { | |
fad1c45c | 91 | ebp = (unsigned long) KSTK_EBP(task); |
b3461034 PBG |
92 | } else { |
93 | asm ("movl %%ebp, %0" : "=r" (ebp) : ); | |
94 | } | |
95 | ||
96 | context = (struct thread_info *) | |
97 | ((unsigned long)stack & (~(THREAD_SIZE - 1))); | |
98 | print_context_stack(context, stack, ebp); | |
99 | ||
b3461034 PBG |
100 | printk("\n"); |
101 | } | |
102 |