1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_SIGFRAME_H
3#define _ASM_X86_SIGFRAME_H
4
5#include <uapi/asm/sigcontext.h>
6#include <asm/siginfo.h>
7#include <asm/ucontext.h>
8#include <linux/compat.h>
9
10#ifdef CONFIG_X86_32
11#define sigframe_ia32 sigframe
12#define rt_sigframe_ia32 rt_sigframe
13#define ucontext_ia32 ucontext
14#else /* !CONFIG_X86_32 */
15
16#ifdef CONFIG_IA32_EMULATION
17#include <asm/ia32.h>
18#endif /* CONFIG_IA32_EMULATION */
19
20#endif /* CONFIG_X86_32 */
21
22#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
23struct sigframe_ia32 {
24 u32 pretcode;
25 int sig;
26 struct sigcontext_32 sc;
27 /*
28 * fpstate is unused. fpstate is moved/allocated after
29 * retcode[] below. This movement allows to have the FP state and the
30 * future state extensions (xsave) stay together.
31 * And at the same time retaining the unused fpstate, prevents changing
32 * the offset of extramask[] in the sigframe and thus prevent any
33 * legacy application accessing/modifying it.
34 */
35 struct _fpstate_32 fpstate_unused;
36 unsigned int extramask[1];
37 char retcode[8];
38 /* fp state follows here */
39};
40
41struct rt_sigframe_ia32 {
42 u32 pretcode;
43 int sig;
44 u32 pinfo;
45 u32 puc;
46#ifdef CONFIG_IA32_EMULATION
47 compat_siginfo_t info;
48#else /* !CONFIG_IA32_EMULATION */
49 struct siginfo info;
50#endif /* CONFIG_IA32_EMULATION */
51 struct ucontext_ia32 uc;
52 char retcode[8];
53 /* fp state follows here */
54};
55#endif /* defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) */
56
57#ifdef CONFIG_X86_64
58
59struct rt_sigframe {
60 char __user *pretcode;
61 struct ucontext uc;
62 struct siginfo info;
63 /* fp state follows here */
64};
65
66#ifdef CONFIG_X86_X32_ABI
67
68struct ucontext_x32 {
69 unsigned int uc_flags;
70 unsigned int uc_link;
71 compat_stack_t uc_stack;
72 unsigned int uc__pad0; /* needed for alignment */
73 struct sigcontext uc_mcontext; /* the 64-bit sigcontext type */
74 compat_sigset_t uc_sigmask; /* mask last for extensibility */
75};
76
77struct rt_sigframe_x32 {
78 u64 pretcode;
79 struct ucontext_x32 uc;
80 compat_siginfo_t info;
81 /* fp state follows here */
82};
83
84#endif /* CONFIG_X86_X32_ABI */
85
86#endif /* CONFIG_X86_64 */
87
88#endif /* _ASM_X86_SIGFRAME_H */
89