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Commit c3f4986f authored by Ingo Molnar's avatar Ingo Molnar
Browse files

x86/headers: Clean up uapi/asm/sigcontext32.h 



Clean up sigcontext32.h a bit:

 - use consistent and readable vertical spacing
 - fix, harmonize and extend comments

No field name has been changed, user-space might be relying on
them.

Acked-by: default avatarMikko Rapeli <mikko.rapeli@iki.fi>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1441438363-9999-3-git-send-email-mingo@kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent b76cb6c8

arch/x86/include/uapi/asm/sigcontext32.h

+58 −52
Original line number Original line Diff line number Diff line 
#ifndef _ASM_X86_SIGCONTEXT32_H

#ifndef _ASM_X86_SIGCONTEXT32_H

#define _ASM_X86_SIGCONTEXT32_H

#define _ASM_X86_SIGCONTEXT32_H





/* Signal context definitions for compat 32-bit programs: */



#include <linux/types.h>

#include <linux/types.h>





#include <asm/sigcontext.h>

#include <asm/sigcontext.h>





/* signal context for 32bit programs. */

/* 10-byte legacy floating point register: */



#define X86_FXSR_MAGIC		0x0000



struct _fpreg {

struct _fpreg {

	unsigned short			significand[4];

	unsigned short			significand[4];

	unsigned short			exponent;

	unsigned short			exponent;

};

};





/* 16-byte floating point register: */

struct _fpxreg {

struct _fpxreg {

	unsigned short			significand[4];

	unsigned short			significand[4];

	unsigned short			exponent;

	unsigned short			exponent;

	unsigned short			padding[3];

	unsigned short			padding[3];

};

};





/* 16-byte XMM vector register: */

struct _xmmreg {

struct _xmmreg {

	__u32	element[4];

	__u32	element[4];

};

};





/* FSAVE frame with extensions */

#define X86_FXSR_MAGIC			0x0000



/* FXSAVE frame: FSAVE frame with extensions */

struct _fpstate_ia32 {

struct _fpstate_ia32 {

	/* Regular FPU environment */

	/* Regular FPU environment: */

	__u32				cw;

	__u32				cw;

	__u32				sw;

	__u32				sw;

	__u32	tag;	/* not compatible to 64bit twd */

	__u32				tag;		/* Not compatible with the 64-bit frame */

	__u32				ipoff;

	__u32				ipoff;

	__u32				cssel;

	__u32				cssel;

	__u32				dataoff;

	__u32				dataoff;

	__u32				datasel;

	__u32				datasel;

	struct _fpreg			_st[8];

	struct _fpreg			_st[8];

	unsigned short			status;

	unsigned short			status;

	unsigned short	magic;		/* 0xffff = regular FPU data only */

	unsigned short			magic;		/* 0xffff: regular FPU data only */

							/* 0x0000: FXSR data */





	/* FXSR FPU environment */

	/* Extended FXSR FPU environment: */

	__u32				_fxsr_env[6];

	__u32				_fxsr_env[6];

	__u32				mxcsr;

	__u32				mxcsr;

	__u32				reserved;

	__u32				reserved;

	struct _fpxreg			_fxsr_st[8];

	struct _fpxreg			_fxsr_st[8];

	struct _xmmreg	_xmm[8];	/* It's actually 16 */

	struct _xmmreg			_xmm[8];	/* The first  8 XMM registers */

	__u32	padding[44];

	__u32				padding[44];	/* The second 8 XMM registers plus padding */

	union {

	union {

		__u32			padding2[12];

		__u32			padding2[12];

		/* Might encode xstate extensions, see asm/sigcontext.h: */

		struct _fpx_sw_bytes	sw_reserved;

		struct _fpx_sw_bytes	sw_reserved;

	};

	};

};

};





/* 32-bit compat sigcontext: */

struct sigcontext_ia32 {

struct sigcontext_ia32 {

       unsigned short			gs, __gsh;

       unsigned short			gs, __gsh;

       unsigned short			fs, __fsh;

       unsigned short			fs, __fsh;
@@ -71,7 +77,7 @@ struct sigcontext_ia32 { 
       unsigned int			flags;

       unsigned int			flags;

       unsigned int			sp_at_signal;

       unsigned int			sp_at_signal;

       unsigned short			ss, __ssh;

       unsigned short			ss, __ssh;

       unsigned int fpstate;		/* really (struct _fpstate_ia32 *) */

       unsigned int			fpstate;	/* Pointer to 'struct _fpstate_ia32' */

       unsigned int			oldmask;

       unsigned int			oldmask;

       unsigned int			cr2;

       unsigned int			cr2;

};

};