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)
23 struct 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
41 struct 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
59 struct 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
68 struct 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
77 struct 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
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