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/* Copyright (C) 2001-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <signal.h>
/* We need the signal context definitions even if they are not used
included in <signal.h>. */
#include <bits/sigcontext.h>
#ifdef __x86_64__
/* Type for general register. */
__extension__ typedef long long int greg_t;
/* Number of general registers. */
#define NGREG 23
/* Container for all general registers. */
typedef greg_t gregset_t[NGREG];
#ifdef __USE_GNU
/* Number of each register in the `gregset_t' array. */
enum
{
REG_R8 = 0,
# define REG_R8 REG_R8
REG_R9,
# define REG_R9 REG_R9
REG_R10,
# define REG_R10 REG_R10
REG_R11,
# define REG_R11 REG_R11
REG_R12,
# define REG_R12 REG_R12
REG_R13,
# define REG_R13 REG_R13
REG_R14,
# define REG_R14 REG_R14
REG_R15,
# define REG_R15 REG_R15
REG_RDI,
# define REG_RDI REG_RDI
REG_RSI,
# define REG_RSI REG_RSI
REG_RBP,
# define REG_RBP REG_RBP
REG_RBX,
# define REG_RBX REG_RBX
REG_RDX,
# define REG_RDX REG_RDX
REG_RAX,
# define REG_RAX REG_RAX
REG_RCX,
# define REG_RCX REG_RCX
REG_RSP,
# define REG_RSP REG_RSP
REG_RIP,
# define REG_RIP REG_RIP
REG_EFL,
# define REG_EFL REG_EFL
REG_CSGSFS, /* Actually short cs, gs, fs, __pad0. */
# define REG_CSGSFS REG_CSGSFS
REG_ERR,
# define REG_ERR REG_ERR
REG_TRAPNO,
# define REG_TRAPNO REG_TRAPNO
REG_OLDMASK,
# define REG_OLDMASK REG_OLDMASK
REG_CR2
# define REG_CR2 REG_CR2
};
#endif
struct _libc_fpxreg
{
unsigned short int significand[4];
unsigned short int exponent;
unsigned short int padding[3];
};
struct _libc_xmmreg
{
__uint32_t element[4];
};
struct _libc_fpstate
{
/* 64-bit FXSAVE format. */
__uint16_t cwd;
__uint16_t swd;
__uint16_t ftw;
__uint16_t fop;
__uint64_t rip;
__uint64_t rdp;
__uint32_t mxcsr;
__uint32_t mxcr_mask;
struct _libc_fpxreg _st[8];
struct _libc_xmmreg _xmm[16];
__uint32_t padding[24];
};
/* Structure to describe FPU registers. */
typedef struct _libc_fpstate *fpregset_t;
/* Context to describe whole processor state. */
typedef struct
{
gregset_t gregs;
/* Note that fpregs is a pointer. */
fpregset_t fpregs;
__extension__ unsigned long long __reserved1 [8];
} mcontext_t;
/* Userlevel context. */
typedef struct ucontext
{
unsigned long int uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
__sigset_t uc_sigmask;
struct _libc_fpstate __fpregs_mem;
} ucontext_t;
#else /* !__x86_64__ */
/* Type for general register. */
typedef int greg_t;
/* Number of general registers. */
#define NGREG 19
/* Container for all general registers. */
typedef greg_t gregset_t[NGREG];
#ifdef __USE_GNU
/* Number of each register is the `gregset_t' array. */
enum
{
REG_GS = 0,
# define REG_GS REG_GS
REG_FS,
# define REG_FS REG_FS
REG_ES,
# define REG_ES REG_ES
REG_DS,
# define REG_DS REG_DS
REG_EDI,
# define REG_EDI REG_EDI
REG_ESI,
# define REG_ESI REG_ESI
REG_EBP,
# define REG_EBP REG_EBP
REG_ESP,
# define REG_ESP REG_ESP
REG_EBX,
# define REG_EBX REG_EBX
REG_EDX,
# define REG_EDX REG_EDX
REG_ECX,
# define REG_ECX REG_ECX
REG_EAX,
# define REG_EAX REG_EAX
REG_TRAPNO,
# define REG_TRAPNO REG_TRAPNO
REG_ERR,
# define REG_ERR REG_ERR
REG_EIP,
# define REG_EIP REG_EIP
REG_CS,
# define REG_CS REG_CS
REG_EFL,
# define REG_EFL REG_EFL
REG_UESP,
# define REG_UESP REG_UESP
REG_SS
# define REG_SS REG_SS
};
#endif
/* Definitions taken from the kernel headers. */
struct _libc_fpreg
{
unsigned short int significand[4];
unsigned short int exponent;
};
struct _libc_fpstate
{
unsigned long int cw;
unsigned long int sw;
unsigned long int tag;
unsigned long int ipoff;
unsigned long int cssel;
unsigned long int dataoff;
unsigned long int datasel;
struct _libc_fpreg _st[8];
unsigned long int status;
};
/* Structure to describe FPU registers. */
typedef struct _libc_fpstate *fpregset_t;
/* Context to describe whole processor state. */
typedef struct
{
gregset_t gregs;
/* Due to Linux's history we have to use a pointer here. The SysV/i386
ABI requires a struct with the values. */
fpregset_t fpregs;
unsigned long int oldmask;
unsigned long int cr2;
} mcontext_t;
/* Userlevel context. */
typedef struct ucontext
{
unsigned long int uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
__sigset_t uc_sigmask;
struct _libc_fpstate __fpregs_mem;
} ucontext_t;
#endif /* !__x86_64__ */
#endif /* sys/ucontext.h */