cregit-Linux how code gets into the kernel

Release 4.14 arch/x86/include/asm/sigframe.h

/* 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;
#ifdef CONFIG_IA32_EMULATION
	
unsigned int extramask[_COMPAT_NSIG_WORDS-1];
#else /* !CONFIG_IA32_EMULATION */
	
unsigned long extramask[_NSIG_WORDS-1];
#endif /* CONFIG_IA32_EMULATION */
	
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 */

#endif /* _ASM_X86_SIGFRAME_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Hiroshi Shimamoto9941.08%430.77%
Richard Henderson5522.82%17.69%
Brian Gerst3313.69%17.69%
Harvey Harrison239.54%17.69%
H. Peter Anvin229.13%17.69%
Suresh B. Siddha52.07%17.69%
Ingo Molnar31.24%323.08%
Greg Kroah-Hartman10.41%17.69%
Total241100.00%13100.00%
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