1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_UML_STACKTRACE_H
3 #define _ASM_UML_STACKTRACE_H
4
5 #include <linux/uaccess.h>
6 #include <linux/ptrace.h>
7
8 struct stack_frame {
9 struct stack_frame *next_frame;
10 unsigned long return_address;
11 };
12
13 struct stacktrace_ops {
14 void (*address)(void *data, unsigned long address, int reliable);
15 };
16
17 #ifdef CONFIG_FRAME_POINTER
18 static inline unsigned long
19 get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs)
20 {
21 if (!task || task == current)
22 return segv_regs ? PT_REGS_BP(segv_regs) : current_bp();
23 return KSTK_EBP(task);
24 }
25 #else
26 static inline unsigned long
27 get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs)
28 {
29 return 0;
30 }
31 #endif
32
33 static inline unsigned long
34 *get_stack_pointer(struct task_struct *task, struct pt_regs *segv_regs)
35 {
36 if (!task || task == current)
37 return segv_regs ? (unsigned long *)PT_REGS_SP(segv_regs) : current_sp();
38 return (unsigned long *)KSTK_ESP(task);
39 }
40
41 void dump_trace(struct task_struct *tsk, const struct stacktrace_ops *ops, void *data);
42
43 #endif /* _ASM_UML_STACKTRACE_H */
44
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