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#ifdef CONFIG_IA32_EMULATION
37 unsigned int extramask[_COMPAT_NSIG_WORDS-1];
38#else /* !CONFIG_IA32_EMULATION */
39 unsigned long extramask[_NSIG_WORDS-1];
40#endif /* CONFIG_IA32_EMULATION */
41 char retcode[8];
42 /* fp state follows here */
43};
44
45struct rt_sigframe_ia32 {
46 u32 pretcode;
47 int sig;
48 u32 pinfo;
49 u32 puc;
50#ifdef CONFIG_IA32_EMULATION
51 compat_siginfo_t info;
52#else /* !CONFIG_IA32_EMULATION */
53 struct siginfo info;
54#endif /* CONFIG_IA32_EMULATION */
55 struct ucontext_ia32 uc;
56 char retcode[8];
57 /* fp state follows here */
58};
59#endif /* defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) */
60
61#ifdef CONFIG_X86_64
62
63struct rt_sigframe {
64 char __user *pretcode;
65 struct ucontext uc;
66 struct siginfo info;
67 /* fp state follows here */
68};
69
70#ifdef CONFIG_X86_X32_ABI
71
72struct ucontext_x32 {
73 unsigned int uc_flags;
74 unsigned int uc_link;
75 compat_stack_t uc_stack;
76 unsigned int uc__pad0; /* needed for alignment */
77 struct sigcontext uc_mcontext; /* the 64-bit sigcontext type */
78 compat_sigset_t uc_sigmask; /* mask last for extensibility */
79};
80
81struct rt_sigframe_x32 {
82 u64 pretcode;
83 struct ucontext_x32 uc;
84 compat_siginfo_t info;
85 /* fp state follows here */
86};
87
88#endif /* CONFIG_X86_X32_ABI */
89
90#endif /* CONFIG_X86_64 */
91
92#endif /* _ASM_X86_SIGFRAME_H */
93