1*b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */
2970e51feSDaniel Walter #ifndef _ASM_UML_STACKTRACE_H
3970e51feSDaniel Walter #define _ASM_UML_STACKTRACE_H
4970e51feSDaniel Walter
5970e51feSDaniel Walter #include <linux/uaccess.h>
6970e51feSDaniel Walter #include <linux/ptrace.h>
7970e51feSDaniel Walter
8970e51feSDaniel Walter struct stack_frame {
9970e51feSDaniel Walter struct stack_frame *next_frame;
10970e51feSDaniel Walter unsigned long return_address;
11970e51feSDaniel Walter };
12970e51feSDaniel Walter
13970e51feSDaniel Walter struct stacktrace_ops {
14970e51feSDaniel Walter void (*address)(void *data, unsigned long address, int reliable);
15970e51feSDaniel Walter };
16970e51feSDaniel Walter
17970e51feSDaniel Walter #ifdef CONFIG_FRAME_POINTER
18970e51feSDaniel Walter static inline unsigned long
get_frame_pointer(struct task_struct * task,struct pt_regs * segv_regs)19970e51feSDaniel Walter get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs)
20970e51feSDaniel Walter {
21970e51feSDaniel Walter if (!task || task == current)
22970e51feSDaniel Walter return segv_regs ? PT_REGS_BP(segv_regs) : current_bp();
23970e51feSDaniel Walter return KSTK_EBP(task);
24970e51feSDaniel Walter }
25970e51feSDaniel Walter #else
26970e51feSDaniel Walter static inline unsigned long
get_frame_pointer(struct task_struct * task,struct pt_regs * segv_regs)27970e51feSDaniel Walter get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs)
28970e51feSDaniel Walter {
29970e51feSDaniel Walter return 0;
30970e51feSDaniel Walter }
31970e51feSDaniel Walter #endif
32970e51feSDaniel Walter
33970e51feSDaniel Walter static inline unsigned long
get_stack_pointer(struct task_struct * task,struct pt_regs * segv_regs)34970e51feSDaniel Walter *get_stack_pointer(struct task_struct *task, struct pt_regs *segv_regs)
35970e51feSDaniel Walter {
36970e51feSDaniel Walter if (!task || task == current)
37970e51feSDaniel Walter return segv_regs ? (unsigned long *)PT_REGS_SP(segv_regs) : current_sp();
38970e51feSDaniel Walter return (unsigned long *)KSTK_ESP(task);
39970e51feSDaniel Walter }
40970e51feSDaniel Walter
41970e51feSDaniel Walter void dump_trace(struct task_struct *tsk, const struct stacktrace_ops *ops, void *data);
42970e51feSDaniel Walter
43970e51feSDaniel Walter #endif /* _ASM_UML_STACKTRACE_H */
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