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
16 unsigned long *bp, *orig_sp;
24 void __unwind_start(struct unwind_state *state, struct task_struct *task,
25 struct pt_regs *regs, unsigned long *first_frame);
27 bool unwind_next_frame(struct unwind_state *state);
29 unsigned long unwind_get_return_address(struct unwind_state *state);
31 static inline bool unwind_done(struct unwind_state *state)
33 return state->stack_info.type == STACK_TYPE_UNKNOWN;
37 void unwind_start(struct unwind_state *state, struct task_struct *task,
38 struct pt_regs *regs, unsigned long *first_frame)
40 first_frame = first_frame ? : get_stack_pointer(task, regs);
42 __unwind_start(state, task, regs, first_frame);
45 #ifdef CONFIG_FRAME_POINTER
48 unsigned long *unwind_get_return_address_ptr(struct unwind_state *state)
50 if (unwind_done(state))
53 return state->regs ? &state->regs->ip : state->bp + 1;
56 static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
58 if (unwind_done(state))
64 #else /* !CONFIG_FRAME_POINTER */
67 unsigned long *unwind_get_return_address_ptr(struct unwind_state *state)
72 static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
77 #endif /* CONFIG_FRAME_POINTER */
79 #endif /* _ASM_X86_UNWIND_H */