blob: 12064284bc4e538a69b66c7c475df4ed19613ac9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_UNWIND_USER_H
#define _ASM_X86_UNWIND_USER_H
#ifdef CONFIG_HAVE_UNWIND_USER_FP
#include <asm/ptrace.h>
#include <asm/uprobes.h>
#define ARCH_INIT_USER_FP_FRAME(ws) \
.cfa_off = 2*(ws), \
.ra_off = -1*(ws), \
.fp_off = -2*(ws), \
.use_fp = true,
#define ARCH_INIT_USER_FP_ENTRY_FRAME(ws) \
.cfa_off = 1*(ws), \
.ra_off = -1*(ws), \
.fp_off = 0, \
.use_fp = false,
static inline int unwind_user_word_size(struct pt_regs *regs)
{
/* We can't unwind VM86 stacks */
if (regs->flags & X86_VM_MASK)
return 0;
#ifdef CONFIG_X86_64
if (!user_64bit_mode(regs))
return sizeof(int);
#endif
return sizeof(long);
}
static inline bool unwind_user_at_function_start(struct pt_regs *regs)
{
return is_uprobe_at_func_entry(regs);
}
#endif /* CONFIG_HAVE_UNWIND_USER_FP */
#endif /* _ASM_X86_UNWIND_USER_H */
|
