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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_SIGFRAME_H
#define _ASM_X86_SIGFRAME_H
#include <uapi/asm/sigcontext.h>
#include <asm/siginfo.h>
#include <asm/ucontext.h>
#include <linux/compat.h>
#ifdef CONFIG_X86_32
#define sigframe_ia32 sigframe
#define rt_sigframe_ia32 rt_sigframe
#define ucontext_ia32 ucontext
#else /* !CONFIG_X86_32 */
#ifdef CONFIG_IA32_EMULATION
#include <asm/ia32.h>
#endif /* CONFIG_IA32_EMULATION */
#endif /* CONFIG_X86_32 */
#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
struct sigframe_ia32 {
u32 pretcode;
int sig;
struct sigcontext_32 sc;
/*
* fpstate is unused. fpstate is moved/allocated after
* retcode[] below. This movement allows to have the FP state and the
* future state extensions (xsave) stay together.
* And at the same time retaining the unused fpstate, prevents changing
* the offset of extramask[] in the sigframe and thus prevent any
* legacy application accessing/modifying it.
*/
struct _fpstate_32 fpstate_unused;
unsigned int extramask[1];
char retcode[8];
/* fp state follows here */
};
struct rt_sigframe_ia32 {
u32 pretcode;
int sig;
u32 pinfo;
u32 puc;
#ifdef CONFIG_IA32_EMULATION
compat_siginfo_t info;
#else /* !CONFIG_IA32_EMULATION */
struct siginfo info;
#endif /* CONFIG_IA32_EMULATION */
struct ucontext_ia32 uc;
char retcode[8];
/* fp state follows here */
};
#endif /* defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) */
#ifdef CONFIG_X86_64
struct rt_sigframe {
char __user *pretcode;
struct ucontext uc;
struct siginfo info;
/* fp state follows here */
};
#ifdef CONFIG_X86_X32_ABI
struct ucontext_x32 {
unsigned int uc_flags;
unsigned int uc_link;
compat_stack_t uc_stack;
unsigned int uc__pad0; /* needed for alignment */
struct sigcontext uc_mcontext; /* the 64-bit sigcontext type */
compat_sigset_t uc_sigmask; /* mask last for extensibility */
};
struct rt_sigframe_x32 {
u64 pretcode;
struct ucontext_x32 uc;
compat_siginfo_t info;
/* fp state follows here */
};
#endif /* CONFIG_X86_X32_ABI */
#endif /* CONFIG_X86_64 */
void __init init_sigframe_size(void);
#endif /* _ASM_X86_SIGFRAME_H */
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