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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - arch/x86/include/asm/stacktrace.h
2 * Copyright (C) 1991, 1992 Linus Torvalds
3 * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
6 #ifndef _ASM_X86_STACKTRACE_H
7 #define _ASM_X86_STACKTRACE_H
9 #include <linux/uaccess.h>
10 #include <linux/ptrace.h>
12 extern int kstack_depth_to_print
;
15 struct stacktrace_ops
;
17 typedef unsigned long (*walk_stack_t
)(struct thread_info
*tinfo
,
20 const struct stacktrace_ops
*ops
,
26 print_context_stack(struct thread_info
*tinfo
,
27 unsigned long *stack
, unsigned long bp
,
28 const struct stacktrace_ops
*ops
, void *data
,
29 unsigned long *end
, int *graph
);
32 print_context_stack_bp(struct thread_info
*tinfo
,
33 unsigned long *stack
, unsigned long bp
,
34 const struct stacktrace_ops
*ops
, void *data
,
35 unsigned long *end
, int *graph
);
37 /* Generic stack tracer with callbacks */
39 struct stacktrace_ops
{
40 void (*address
)(void *data
, unsigned long address
, int reliable
);
41 /* On negative return stop dumping */
42 int (*stack
)(void *data
, char *name
);
43 walk_stack_t walk_stack
;
46 void dump_trace(struct task_struct
*tsk
, struct pt_regs
*regs
,
47 unsigned long *stack
, unsigned long bp
,
48 const struct stacktrace_ops
*ops
, void *data
);
51 #define STACKSLOTS_PER_LINE 8
52 #define get_bp(bp) asm("movl %%ebp, %0" : "=r" (bp) :)
54 #define STACKSLOTS_PER_LINE 4
55 #define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :)
58 #ifdef CONFIG_FRAME_POINTER
59 static inline unsigned long
60 stack_frame(struct task_struct
*task
, struct pt_regs
*regs
)
67 if (task
== current
) {
68 /* Grab bp right from our regs */
73 /* bp is the last reg pushed by switch_to */
74 return *(unsigned long *)task
->thread
.sp
;
77 static inline unsigned long
78 stack_frame(struct task_struct
*task
, struct pt_regs
*regs
)
85 show_trace_log_lvl(struct task_struct
*task
, struct pt_regs
*regs
,
86 unsigned long *stack
, unsigned long bp
, char *log_lvl
);
89 show_stack_log_lvl(struct task_struct
*task
, struct pt_regs
*regs
,
90 unsigned long *sp
, unsigned long bp
, char *log_lvl
);
92 extern unsigned int code_bytes
;
94 /* The form of the top of the frame on the stack */
96 struct stack_frame
*next_frame
;
97 unsigned long return_address
;
100 struct stack_frame_ia32
{
105 static inline unsigned long caller_frame_pointer(void)
107 struct stack_frame
*frame
;
111 #ifdef CONFIG_FRAME_POINTER
112 frame
= frame
->next_frame
;
115 return (unsigned long)frame
;
118 #endif /* _ASM_X86_STACKTRACE_H */