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 [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 | |