[mirror_ubuntu-jammy-kernel.git] / arch / x86 / include / asm / sigcontext.h

#ifndef _ASM_X86_SIGCONTEXT_H
#define _ASM_X86_SIGCONTEXT_H

#include <linux/compiler.h>
#include <linux/types.h>

#define FP_XSTATE_MAGIC1	0x46505853U
#define FP_XSTATE_MAGIC2	0x46505845U
#define FP_XSTATE_MAGIC2_SIZE	sizeof(FP_XSTATE_MAGIC2)

/*
 * bytes 464..511 in the current 512byte layout of fxsave/fxrstor frame
 * are reserved for SW usage. On cpu's supporting xsave/xrstor, these bytes
 * are used to extended the fpstate pointer in the sigcontext, which now
 * includes the extended state information along with fpstate information.
 *
 * Presence of FP_XSTATE_MAGIC1 at the beginning of this SW reserved
 * area and FP_XSTATE_MAGIC2 at the end of memory layout
 * (extended_size - FP_XSTATE_MAGIC2_SIZE) indicates the presence of the
 * extended state information in the memory layout pointed by the fpstate
 * pointer in sigcontext.
 */
struct _fpx_sw_bytes {
	__u32 magic1;		/* FP_XSTATE_MAGIC1 */
	__u32 extended_size;	/* total size of the layout referred by
				 * fpstate pointer in the sigcontext.
				 */
	__u64 xstate_bv;
				/* feature bit mask (including fp/sse/extended
				 * state) that is present in the memory
				 * layout.
				 */
	__u32 xstate_size;	/* actual xsave state size, based on the
				 * features saved in the layout.
				 * 'extended_size' will be greater than
				 * 'xstate_size'.
				 */
	__u32 padding[7];	/*  for future use. */
};

#ifdef __i386__
/*
 * As documented in the iBCS2 standard..
 *
 * The first part of "struct _fpstate" is just the normal i387
 * hardware setup, the extra "status" word is used to save the
 * coprocessor status word before entering the handler.
 *
 * Pentium III FXSR, SSE support
 *	Gareth Hughes <gareth@valinux.com>, May 2000
 *
 * The FPU state data structure has had to grow to accommodate the
 * extended FPU state required by the Streaming SIMD Extensions.
 * There is no documented standard to accomplish this at the moment.
 */
struct _fpreg {
	unsigned short significand[4];
	unsigned short exponent;
};

struct _fpxreg {
	unsigned short significand[4];
	unsigned short exponent;
	unsigned short padding[3];
};

struct _xmmreg {
	unsigned long element[4];
};

struct _fpstate {
	/* Regular FPU environment */
	unsigned long	cw;
	unsigned long	sw;
	unsigned long	tag;
	unsigned long	ipoff;
	unsigned long	cssel;
	unsigned long	dataoff;
	unsigned long	datasel;
	struct _fpreg	_st[8];
	unsigned short	status;
	unsigned short	magic;		/* 0xffff = regular FPU data only */

	/* FXSR FPU environment */
	unsigned long	_fxsr_env[6];	/* FXSR FPU env is ignored */
	unsigned long	mxcsr;
	unsigned long	reserved;
	struct _fpxreg	_fxsr_st[8];	/* FXSR FPU reg data is ignored */
	struct _xmmreg	_xmm[8];
	unsigned long	padding1[44];

	union {
		unsigned long	padding2[12];
		struct _fpx_sw_bytes sw_reserved; /* represents the extended
						   * state info */
	};
};

#define X86_FXSR_MAGIC		0x0000

#ifdef __KERNEL__
struct sigcontext {
	unsigned short gs, __gsh;
	unsigned short fs, __fsh;
	unsigned short es, __esh;
	unsigned short ds, __dsh;
	unsigned long di;
	unsigned long si;
	unsigned long bp;
	unsigned long sp;
	unsigned long bx;
	unsigned long dx;
	unsigned long cx;
	unsigned long ax;
	unsigned long trapno;
	unsigned long err;
	unsigned long ip;
	unsigned short cs, __csh;
	unsigned long flags;
	unsigned long sp_at_signal;
	unsigned short ss, __ssh;

	/*
	 * fpstate is really (struct _fpstate *) or (struct _xstate *)
	 * depending on the FP_XSTATE_MAGIC1 encoded in the SW reserved
	 * bytes of (struct _fpstate) and FP_XSTATE_MAGIC2 present at the end
	 * of extended memory layout. See comments at the definition of
	 * (struct _fpx_sw_bytes)
	 */
	void __user *fpstate;		/* zero when no FPU/extended context */
	unsigned long oldmask;
	unsigned long cr2;
};
#else /* __KERNEL__ */
/*
 * User-space might still rely on the old definition:
 */
struct sigcontext {
	unsigned short gs, __gsh;
	unsigned short fs, __fsh;
	unsigned short es, __esh;
	unsigned short ds, __dsh;
	unsigned long edi;
	unsigned long esi;
	unsigned long ebp;
	unsigned long esp;
	unsigned long ebx;
	unsigned long edx;
	unsigned long ecx;
	unsigned long eax;
	unsigned long trapno;
	unsigned long err;
	unsigned long eip;
	unsigned short cs, __csh;
	unsigned long eflags;
	unsigned long esp_at_signal;
	unsigned short ss, __ssh;
	struct _fpstate __user *fpstate;
	unsigned long oldmask;
	unsigned long cr2;
};
#endif /* !__KERNEL__ */

#else /* __i386__ */

/* FXSAVE frame */
/* Note: reserved1/2 may someday contain valuable data. Always save/restore
   them when you change signal frames. */
struct _fpstate {
	__u16	cwd;
	__u16	swd;
	__u16	twd;		/* Note this is not the same as the
				   32bit/x87/FSAVE twd */
	__u16	fop;
	__u64	rip;
	__u64	rdp;
	__u32	mxcsr;
	__u32	mxcsr_mask;
	__u32	st_space[32];	/* 8*16 bytes for each FP-reg */
	__u32	xmm_space[64];	/* 16*16 bytes for each XMM-reg  */
	__u32	reserved2[12];
	union {
		__u32	reserved3[12];
		struct _fpx_sw_bytes sw_reserved; /* represents the extended
						   * state information */
	};
};

#ifdef __KERNEL__
struct sigcontext {
	unsigned long r8;
	unsigned long r9;
	unsigned long r10;
	unsigned long r11;
	unsigned long r12;
	unsigned long r13;
	unsigned long r14;
	unsigned long r15;
	unsigned long di;
	unsigned long si;
	unsigned long bp;
	unsigned long bx;
	unsigned long dx;
	unsigned long ax;
	unsigned long cx;
	unsigned long sp;
	unsigned long ip;
	unsigned long flags;
	unsigned short cs;
	unsigned short gs;
	unsigned short fs;
	unsigned short __pad0;
	unsigned long err;
	unsigned long trapno;
	unsigned long oldmask;
	unsigned long cr2;

	/*
	 * fpstate is really (struct _fpstate *) or (struct _xstate *)
	 * depending on the FP_XSTATE_MAGIC1 encoded in the SW reserved
	 * bytes of (struct _fpstate) and FP_XSTATE_MAGIC2 present at the end
	 * of extended memory layout. See comments at the definition of
	 * (struct _fpx_sw_bytes)
	 */
	void __user *fpstate;		/* zero when no FPU/extended context */
	unsigned long reserved1[8];
};
#else /* __KERNEL__ */
/*
 * User-space might still rely on the old definition:
 */
struct sigcontext {
	unsigned long r8;
	unsigned long r9;
	unsigned long r10;
	unsigned long r11;
	unsigned long r12;
	unsigned long r13;
	unsigned long r14;
	unsigned long r15;
	unsigned long rdi;
	unsigned long rsi;
	unsigned long rbp;
	unsigned long rbx;
	unsigned long rdx;
	unsigned long rax;
	unsigned long rcx;
	unsigned long rsp;
	unsigned long rip;
	unsigned long eflags;		/* RFLAGS */
	unsigned short cs;
	unsigned short gs;
	unsigned short fs;
	unsigned short __pad0;
	unsigned long err;
	unsigned long trapno;
	unsigned long oldmask;
	unsigned long cr2;
	struct _fpstate __user *fpstate;	/* zero when no FPU context */
	unsigned long reserved1[8];
};
#endif /* !__KERNEL__ */

#endif /* !__i386__ */

struct _xsave_hdr {
	__u64 xstate_bv;
	__u64 reserved1[2];
	__u64 reserved2[5];
};

struct _ymmh_state {
	/* 16 * 16 bytes for each YMMH-reg */
	__u32 ymmh_space[64];
};

/*
 * Extended state pointed by the fpstate pointer in the sigcontext.
 * In addition to the fpstate, information encoded in the xstate_hdr
 * indicates the presence of other extended state information
 * supported by the processor and OS.
 */
struct _xstate {
	struct _fpstate fpstate;
	struct _xsave_hdr xstate_hdr;
	struct _ymmh_state ymmh;
	/* new processor state extensions go here */
};

#endif /* _ASM_X86_SIGCONTEXT_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_SIGCONTEXT_H
1965aae3 PA	2	#define _ASM_X86_SIGCONTEXT_H
77129c5e TG	3
77129c5e TG	4	#include <linux/compiler.h>
e59afe6a	5	#include <linux/types.h>
77129c5e	6
bdd8caba SS	7	#define FP_XSTATE_MAGIC1 0x46505853U
	8	#define FP_XSTATE_MAGIC2 0x46505845U
	9	#define FP_XSTATE_MAGIC2_SIZE sizeof(FP_XSTATE_MAGIC2)
	10
	11	/*
	12	* bytes 464..511 in the current 512byte layout of fxsave/fxrstor frame
	13	* are reserved for SW usage. On cpu's supporting xsave/xrstor, these bytes
	14	* are used to extended the fpstate pointer in the sigcontext, which now
	15	* includes the extended state information along with fpstate information.
	16	*
	17	* Presence of FP_XSTATE_MAGIC1 at the beginning of this SW reserved
	18	* area and FP_XSTATE_MAGIC2 at the end of memory layout
	19	* (extended_size - FP_XSTATE_MAGIC2_SIZE) indicates the presence of the
	20	* extended state information in the memory layout pointed by the fpstate
	21	* pointer in sigcontext.
	22	*/
	23	struct _fpx_sw_bytes {
	24	__u32 magic1; /* FP_XSTATE_MAGIC1 */
	25	__u32 extended_size; /* total size of the layout referred by
	26	* fpstate pointer in the sigcontext.
	27	*/
	28	__u64 xstate_bv;
	29	/* feature bit mask (including fp/sse/extended
	30	* state) that is present in the memory
	31	* layout.
	32	*/
	33	__u32 xstate_size; /* actual xsave state size, based on the
	34	* features saved in the layout.
	35	* 'extended_size' will be greater than
	36	* 'xstate_size'.
	37	*/
	38	__u32 padding[7]; /* for future use. */
	39	};
	40
77129c5e TG	41	#ifdef __i386__
	42	/*
	43	* As documented in the iBCS2 standard..
	44	*
	45	* The first part of "struct _fpstate" is just the normal i387
	46	* hardware setup, the extra "status" word is used to save the
	47	* coprocessor status word before entering the handler.
	48	*
	49	* Pentium III FXSR, SSE support
	50	* Gareth Hughes <gareth@valinux.com>, May 2000
	51	*
	52	* The FPU state data structure has had to grow to accommodate the
	53	* extended FPU state required by the Streaming SIMD Extensions.
	54	* There is no documented standard to accomplish this at the moment.
	55	*/
	56	struct _fpreg {
	57	unsigned short significand[4];
	58	unsigned short exponent;
	59	};
	60
	61	struct _fpxreg {
	62	unsigned short significand[4];
	63	unsigned short exponent;
	64	unsigned short padding[3];
	65	};
	66
	67	struct _xmmreg {
	68	unsigned long element[4];
	69	};
	70
	71	struct _fpstate {
	72	/* Regular FPU environment */
	73	unsigned long cw;
	74	unsigned long sw;
	75	unsigned long tag;
	76	unsigned long ipoff;
	77	unsigned long cssel;
	78	unsigned long dataoff;
	79	unsigned long datasel;
	80	struct _fpreg _st[8];
	81	unsigned short status;
	82	unsigned short magic; /* 0xffff = regular FPU data only */
	83
	84	/* FXSR FPU environment */
	85	unsigned long _fxsr_env[6]; /* FXSR FPU env is ignored */
	86	unsigned long mxcsr;
	87	unsigned long reserved;
	88	struct _fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
	89	struct _xmmreg _xmm[8];
bdd8caba SS	90	unsigned long padding1[44];
	91
	92	union {
	93	unsigned long padding2[12];
	94	struct _fpx_sw_bytes sw_reserved; /* represents the extended
	95	* state info */
	96	};
77129c5e TG	97	};
	98
	99	#define X86_FXSR_MAGIC 0x0000
	100
1cdde191	101	#ifdef __KERNEL__
77129c5e TG	102	struct sigcontext {
	103	unsigned short gs, __gsh;
	104	unsigned short fs, __fsh;
	105	unsigned short es, __esh;
	106	unsigned short ds, __dsh;
742fa54a PA	107	unsigned long di;
	108	unsigned long si;
	109	unsigned long bp;
	110	unsigned long sp;
	111	unsigned long bx;
	112	unsigned long dx;
	113	unsigned long cx;
	114	unsigned long ax;
77129c5e TG	115	unsigned long trapno;
77129c5e TG	116	unsigned long err;
742fa54a	117	unsigned long ip;
77129c5e	118	unsigned short cs, __csh;
742fa54a PA	119	unsigned long flags;
742fa54a PA	120	unsigned long sp_at_signal;
77129c5e	121	unsigned short ss, __ssh;
bdd8caba SS	122
	123	/*
	124	* fpstate is really (struct _fpstate ) or (struct _xstate )
	125	* depending on the FP_XSTATE_MAGIC1 encoded in the SW reserved
	126	* bytes of (struct _fpstate) and FP_XSTATE_MAGIC2 present at the end
6070d81e	127	* of extended memory layout. See comments at the definition of
bdd8caba SS	128	* (struct _fpx_sw_bytes)
	129	*/
	130	void __user fpstate; / zero when no FPU/extended context */
77129c5e TG	131	unsigned long oldmask;
	132	unsigned long cr2;
	133	};
1cdde191 IM	134	#else /* __KERNEL__ */
	135	/*
	136	* User-space might still rely on the old definition:
	137	*/
	138	struct sigcontext {
	139	unsigned short gs, __gsh;
	140	unsigned short fs, __fsh;
	141	unsigned short es, __esh;
	142	unsigned short ds, __dsh;
	143	unsigned long edi;
	144	unsigned long esi;
	145	unsigned long ebp;
	146	unsigned long esp;
	147	unsigned long ebx;
	148	unsigned long edx;
	149	unsigned long ecx;
	150	unsigned long eax;
	151	unsigned long trapno;
	152	unsigned long err;
	153	unsigned long eip;
	154	unsigned short cs, __csh;
	155	unsigned long eflags;
	156	unsigned long esp_at_signal;
	157	unsigned short ss, __ssh;
af1fec15	158	struct _fpstate __user *fpstate;
1cdde191 IM	159	unsigned long oldmask;
	160	unsigned long cr2;
	161	};
	162	#endif /* !__KERNEL__ */
77129c5e TG	163
	164	#else /* __i386__ */
	165
	166	/* FXSAVE frame */
	167	/* Note: reserved1/2 may someday contain valuable data. Always save/restore
	168	them when you change signal frames. */
	169	struct _fpstate {
	170	__u16 cwd;
	171	__u16 swd;
af1fec15 JP	172	__u16 twd; /* Note this is not the same as the
af1fec15 JP	173	32bit/x87/FSAVE twd */
77129c5e TG	174	__u16 fop;
	175	__u64 rip;
	176	__u64 rdp;
	177	__u32 mxcsr;
	178	__u32 mxcsr_mask;
	179	__u32 st_space[32]; /* 816 bytes for each FP-reg /
	180	__u32 xmm_space[64]; /* 1616 bytes for each XMM-reg /
bdd8caba SS	181	__u32 reserved2[12];
	182	union {
	183	__u32 reserved3[12];
	184	struct _fpx_sw_bytes sw_reserved; /* represents the extended
	185	* state information */
	186	};
77129c5e TG	187	};
77129c5e TG	188
1cdde191	189	#ifdef __KERNEL__
77129c5e TG	190	struct sigcontext {
	191	unsigned long r8;
	192	unsigned long r9;
	193	unsigned long r10;
	194	unsigned long r11;
	195	unsigned long r12;
	196	unsigned long r13;
	197	unsigned long r14;
	198	unsigned long r15;
742fa54a PA	199	unsigned long di;
	200	unsigned long si;
	201	unsigned long bp;
	202	unsigned long bx;
	203	unsigned long dx;
	204	unsigned long ax;
	205	unsigned long cx;
	206	unsigned long sp;
	207	unsigned long ip;
	208	unsigned long flags;
77129c5e TG	209	unsigned short cs;
	210	unsigned short gs;
	211	unsigned short fs;
	212	unsigned short __pad0;
	213	unsigned long err;
	214	unsigned long trapno;
	215	unsigned long oldmask;
	216	unsigned long cr2;
bdd8caba SS	217
	218	/*
	219	* fpstate is really (struct _fpstate ) or (struct _xstate )
	220	* depending on the FP_XSTATE_MAGIC1 encoded in the SW reserved
	221	* bytes of (struct _fpstate) and FP_XSTATE_MAGIC2 present at the end
6070d81e	222	* of extended memory layout. See comments at the definition of
bdd8caba SS	223	* (struct _fpx_sw_bytes)
	224	*/
	225	void __user fpstate; / zero when no FPU/extended context */
77129c5e TG	226	unsigned long reserved1[8];
77129c5e TG	227	};
1cdde191 IM	228	#else /* __KERNEL__ */
	229	/*
	230	* User-space might still rely on the old definition:
	231	*/
	232	struct sigcontext {
	233	unsigned long r8;
	234	unsigned long r9;
	235	unsigned long r10;
	236	unsigned long r11;
	237	unsigned long r12;
	238	unsigned long r13;
	239	unsigned long r14;
	240	unsigned long r15;
	241	unsigned long rdi;
	242	unsigned long rsi;
	243	unsigned long rbp;
	244	unsigned long rbx;
	245	unsigned long rdx;
	246	unsigned long rax;
	247	unsigned long rcx;
	248	unsigned long rsp;
	249	unsigned long rip;
	250	unsigned long eflags; /* RFLAGS */
	251	unsigned short cs;
	252	unsigned short gs;
	253	unsigned short fs;
	254	unsigned short __pad0;
	255	unsigned long err;
	256	unsigned long trapno;
	257	unsigned long oldmask;
	258	unsigned long cr2;
	259	struct _fpstate __user fpstate; / zero when no FPU context */
	260	unsigned long reserved1[8];
	261	};
	262	#endif /* !__KERNEL__ */
77129c5e TG	263
	264	#endif /* !__i386__ */
	265
bdd8caba	266	struct _xsave_hdr {
26d809af IM	267	__u64 xstate_bv;
	268	__u64 reserved1[2];
	269	__u64 reserved2[5];
bdd8caba SS	270	};
bdd8caba SS	271
a30469e7 SS	272	struct _ymmh_state {
	273	/* 16 * 16 bytes for each YMMH-reg */
	274	__u32 ymmh_space[64];
	275	};
	276
bdd8caba SS	277	/*
	278	* Extended state pointed by the fpstate pointer in the sigcontext.
	279	* In addition to the fpstate, information encoded in the xstate_hdr
	280	* indicates the presence of other extended state information
	281	* supported by the processor and OS.
	282	*/
	283	struct _xstate {
	284	struct _fpstate fpstate;
	285	struct _xsave_hdr xstate_hdr;
a30469e7	286	struct _ymmh_state ymmh;
bdd8caba SS	287	/* new processor state extensions go here */
	288	};
	289
1965aae3	290	#endif /* _ASM_X86_SIGCONTEXT_H */