1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_SIGFRAME_H
3 #define _ASM_X86_SIGFRAME_H
5 #include <uapi/asm/sigcontext.h>
6 #include <asm/siginfo.h>
7 #include <asm/ucontext.h>
8 #include <linux/compat.h>
11 #define sigframe_ia32 sigframe
12 #define rt_sigframe_ia32 rt_sigframe
13 #define ucontext_ia32 ucontext
14 #else /* !CONFIG_X86_32 */
16 #ifdef CONFIG_IA32_EMULATION
18 #endif /* CONFIG_IA32_EMULATION */
20 #endif /* CONFIG_X86_32 */
22 #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
23 struct sigframe_ia32 {
26 struct sigcontext_32 sc;
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.
35 struct _fpstate_32 fpstate_unused;
36 unsigned int extramask[1];
38 /* fp state follows here */
41 struct rt_sigframe_ia32 {
46 #ifdef CONFIG_IA32_EMULATION
47 compat_siginfo_t info;
48 #else /* !CONFIG_IA32_EMULATION */
50 #endif /* CONFIG_IA32_EMULATION */
51 struct ucontext_ia32 uc;
53 /* fp state follows here */
55 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) */
60 char __user *pretcode;
63 /* fp state follows here */
66 #ifdef CONFIG_X86_X32_ABI
69 unsigned int uc_flags;
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 */
77 struct rt_sigframe_x32 {
79 struct ucontext_x32 uc;
80 compat_siginfo_t info;
81 /* fp state follows here */
84 #endif /* CONFIG_X86_X32_ABI */
86 #endif /* CONFIG_X86_64 */
88 #endif /* _ASM_X86_SIGFRAME_H */