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Name	Size	Permission
a.out.h	693 B	-rw-r--r--
auxvec.h	483 B	-rw-r--r--
bitsperlong.h	229 B	-rw-r--r--
boot.h	260 B	-rw-r--r--
bootparam.h	4.39 KB	-rw-r--r--
bpf_perf_event.h	40 B	-rw-r--r--
byteorder.h	137 B	-rw-r--r--
debugreg.h	3.15 KB	-rw-r--r--
e820.h	2.63 KB	-rw-r--r--
errno.h	31 B	-rw-r--r--
fcntl.h	31 B	-rw-r--r--
hw_breakpoint.h	6 B	-rw-r--r--
hyperv.h	12.98 KB	-rw-r--r--
ioctl.h	31 B	-rw-r--r--
ioctls.h	32 B	-rw-r--r--
ipcbuf.h	32 B	-rw-r--r--
ist.h	790 B	-rw-r--r--
kvm.h	6.81 KB	-rw-r--r--
kvm_para.h	2.8 KB	-rw-r--r--
kvm_perf.h	325 B	-rw-r--r--
ldt.h	963 B	-rw-r--r--
mce.h	1.22 KB	-rw-r--r--
mman.h	1.01 KB	-rw-r--r--
msgbuf.h	32 B	-rw-r--r--
msr-index.h	29.04 KB	-rw-r--r--
msr.h	283 B	-rw-r--r--
mtrr.h	4.06 KB	-rw-r--r--
param.h	31 B	-rw-r--r--
perf_regs.h	1.24 KB	-rw-r--r--
poll.h	30 B	-rw-r--r--
posix_types.h	161 B	-rw-r--r--
posix_types_32.h	702 B	-rw-r--r--
posix_types_64.h	546 B	-rw-r--r--
posix_types_x32.h	518 B	-rw-r--r--
prctl.h	190 B	-rw-r--r--
processor-flags.h	6.32 KB	-rw-r--r--
ptrace-abi.h	1.76 KB	-rw-r--r--
ptrace.h	1.17 KB	-rw-r--r--
resource.h	34 B	-rw-r--r--
sembuf.h	699 B	-rw-r--r--
setup.h	6 B	-rw-r--r--
shmbuf.h	32 B	-rw-r--r--
sigcontext.h	5.11 KB	-rw-r--r--
sigcontext32.h	1.64 KB	-rw-r--r--
siginfo.h	431 B	-rw-r--r--
signal.h	2.77 KB	-rw-r--r--
socket.h	32 B	-rw-r--r--
sockios.h	33 B	-rw-r--r--
stat.h	2.89 KB	-rw-r--r--
statfs.h	353 B	-rw-r--r--
svm.h	5.09 KB	-rw-r--r--
swab.h	661 B	-rw-r--r--
termbits.h	34 B	-rw-r--r--
termios.h	33 B	-rw-r--r--
types.h	113 B	-rw-r--r--
ucontext.h	339 B	-rw-r--r--
unistd.h	296 B	-rw-r--r--
unistd_32.h	9.37 KB	-rw-r--r--
unistd_64.h	8.59 KB	-rw-r--r--
unistd_x32.h	15.12 KB	-rw-r--r--
vm86.h	2.98 KB	-rw-r--r--
vmx.h	6.53 KB	-rw-r--r--
vsyscall.h	375 B	-rw-r--r--

Code Editor : sigcontext.h

#ifndef _ASM_X86_SIGCONTEXT_H
#define _ASM_X86_SIGCONTEXT_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

/*
 * 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 *fpstate;
	unsigned long oldmask;
	unsigned long cr2;
};

#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 */
	};
};

/*
 * User-space might still rely on the old definition:
 */
struct sigcontext {
	__u64 r8;
	__u64 r9;
	__u64 r10;
	__u64 r11;
	__u64 r12;
	__u64 r13;
	__u64 r14;
	__u64 r15;
	__u64 rdi;
	__u64 rsi;
	__u64 rbp;
	__u64 rbx;
	__u64 rdx;
	__u64 rax;
	__u64 rcx;
	__u64 rsp;
	__u64 rip;
	__u64 eflags;		/* RFLAGS */
	__u16 cs;
	__u16 gs;
	__u16 fs;
	__u16 __pad0;
	__u64 err;
	__u64 trapno;
	__u64 oldmask;
	__u64 cr2;
	struct _fpstate *fpstate;	/* zero when no FPU context */
#ifdef __ILP32__
	__u32 __fpstate_pad;
#endif
	__u64 reserved1[8];
};

#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 */

${this.title}

Code Editor : sigcontext.h