1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 1991, 1992 Linus Torvalds
4 * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
7 #ifndef _ASM_X86_STACKTRACE_H
8 #define _ASM_X86_STACKTRACE_H
10 #include <linux/uaccess.h>
11 #include <linux/ptrace.h>
12 #include <asm/switch_to.h>
21 STACK_TYPE_EXCEPTION_LAST = STACK_TYPE_EXCEPTION + N_EXCEPTION_STACKS-1,
26 unsigned long *begin, *end, *next_sp;
29 bool in_task_stack(unsigned long *stack, struct task_struct *task,
30 struct stack_info *info);
32 bool in_entry_stack(unsigned long *stack, struct stack_info *info);
34 int get_stack_info(unsigned long *stack, struct task_struct *task,
35 struct stack_info *info, unsigned long *visit_mask);
37 const char *stack_type_name(enum stack_type type);
39 static inline bool on_stack(struct stack_info *info, void *addr, size_t len)
41 void *begin = info->begin;
42 void *end = info->end;
44 return (info->type != STACK_TYPE_UNKNOWN &&
45 addr >= begin && addr < end &&
46 addr + len > begin && addr + len <= end);
50 #define STACKSLOTS_PER_LINE 8
52 #define STACKSLOTS_PER_LINE 4
55 #ifdef CONFIG_FRAME_POINTER
56 static inline unsigned long *
57 get_frame_pointer(struct task_struct *task, struct pt_regs *regs)
60 return (unsigned long *)regs->bp;
63 return __builtin_frame_address(0);
65 return &((struct inactive_task_frame *)task->thread.sp)->bp;
68 static inline unsigned long *
69 get_frame_pointer(struct task_struct *task, struct pt_regs *regs)
73 #endif /* CONFIG_FRAME_POINTER */
75 static inline unsigned long *
76 get_stack_pointer(struct task_struct *task, struct pt_regs *regs)
79 return (unsigned long *)kernel_stack_pointer(regs);
82 return __builtin_frame_address(0);
84 return (unsigned long *)task->thread.sp;
87 void show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
88 unsigned long *stack, char *log_lvl);
90 /* The form of the top of the frame on the stack */
92 struct stack_frame *next_frame;
93 unsigned long return_address;
96 struct stack_frame_ia32 {
101 static inline unsigned long caller_frame_pointer(void)
103 struct stack_frame *frame;
105 frame = __builtin_frame_address(0);
107 #ifdef CONFIG_FRAME_POINTER
108 frame = frame->next_frame;
111 return (unsigned long)frame;
114 void show_opcodes(struct pt_regs *regs, const char *loglvl);
115 void show_ip(struct pt_regs *regs, const char *loglvl);
116 #endif /* _ASM_X86_STACKTRACE_H */