1 #ifndef _ASM_X86_UNWIND_H
2 #define _ASM_X86_UNWIND_H
4 #include <linux/sched.h>
5 #include <linux/ftrace.h>
6 #include <asm/ptrace.h>
7 #include <asm/stacktrace.h>
10 struct stack_info stack_info;
11 unsigned long stack_mask;
12 struct task_struct *task;
14 #ifdef CONFIG_FRAME_POINTER
22 void __unwind_start(struct unwind_state *state, struct task_struct *task,
23 struct pt_regs *regs, unsigned long *first_frame);
25 bool unwind_next_frame(struct unwind_state *state);
27 unsigned long unwind_get_return_address(struct unwind_state *state);
29 static inline bool unwind_done(struct unwind_state *state)
31 return state->stack_info.type == STACK_TYPE_UNKNOWN;
35 void unwind_start(struct unwind_state *state, struct task_struct *task,
36 struct pt_regs *regs, unsigned long *first_frame)
38 first_frame = first_frame ? : get_stack_pointer(task, regs);
40 __unwind_start(state, task, regs, first_frame);
43 #ifdef CONFIG_FRAME_POINTER
46 unsigned long *unwind_get_return_address_ptr(struct unwind_state *state)
48 if (unwind_done(state))
51 return state->regs ? &state->regs->ip : state->bp + 1;
54 static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
56 if (unwind_done(state))
62 #else /* !CONFIG_FRAME_POINTER */
65 unsigned long *unwind_get_return_address_ptr(struct unwind_state *state)
70 static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
75 #endif /* CONFIG_FRAME_POINTER */
77 #endif /* _ASM_X86_UNWIND_H */