/* Copyright (C) 2001-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _SYS_UCONTEXT_H

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#define _SYS_UCONTEXT_H 1

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#include <features.h>

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#include <bits/types.h>

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#include <bits/types/sigset_t.h>

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#include <bits/types/stack_t.h>

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#ifdef __USE_MISC

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# define __ctx(fld) fld

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#else

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# define __ctx(fld) __ ## fld

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#endif

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#ifdef __x86_64__

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/* Type for general register. */

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__extension__ typedef long long int greg_t;

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/* Number of general registers. */

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#define __NGREG 23

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#ifdef __USE_MISC

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# define NGREG __NGREG

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#endif

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/* Container for all general registers. */

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typedef greg_t gregset_t[__NGREG];

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#ifdef __USE_GNU

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/* Number of each register in the `gregset_t' array. */

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enum

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{

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REG_R8 = 0,

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# define REG_R8 REG_R8

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REG_R9,

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# define REG_R9 REG_R9

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REG_R10,

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# define REG_R10 REG_R10

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REG_R11,

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# define REG_R11 REG_R11

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REG_R12,

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# define REG_R12 REG_R12

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REG_R13,

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# define REG_R13 REG_R13

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REG_R14,

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# define REG_R14 REG_R14

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REG_R15,

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# define REG_R15 REG_R15

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REG_RDI,

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# define REG_RDI REG_RDI

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REG_RSI,

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# define REG_RSI REG_RSI

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REG_RBP,

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# define REG_RBP REG_RBP

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REG_RBX,

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# define REG_RBX REG_RBX

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REG_RDX,

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# define REG_RDX REG_RDX

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REG_RAX,

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# define REG_RAX REG_RAX

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REG_RCX,

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# define REG_RCX REG_RCX

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REG_RSP,

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# define REG_RSP REG_RSP

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REG_RIP,

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# define REG_RIP REG_RIP

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REG_EFL,

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# define REG_EFL REG_EFL

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REG_CSGSFS, /* Actually short cs, gs, fs, __pad0. */

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# define REG_CSGSFS REG_CSGSFS

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REG_ERR,

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# define REG_ERR REG_ERR

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REG_TRAPNO,

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# define REG_TRAPNO REG_TRAPNO

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REG_OLDMASK,

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# define REG_OLDMASK REG_OLDMASK

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REG_CR2

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# define REG_CR2 REG_CR2

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};

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#endif

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struct _libc_fpxreg

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{

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unsigned short int __ctx(significand)[4];

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unsigned short int __ctx(exponent);

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unsigned short int __glibc_reserved1[3];

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};

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struct _libc_xmmreg

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{

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__uint32_t __ctx(element)[4];

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};

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struct _libc_fpstate

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{

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/* 64-bit FXSAVE format. */

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__uint16_t __ctx(cwd);

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__uint16_t __ctx(swd);

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__uint16_t __ctx(ftw);

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__uint16_t __ctx(fop);

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__uint64_t __ctx(rip);

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__uint64_t __ctx(rdp);

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__uint32_t __ctx(mxcsr);

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__uint32_t __ctx(mxcr_mask);

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struct _libc_fpxreg _st[8];

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struct _libc_xmmreg _xmm[16];

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__uint32_t __glibc_reserved1[24];

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};

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/* Structure to describe FPU registers. */

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typedef struct _libc_fpstate *fpregset_t;

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/* Context to describe whole processor state. */

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typedef struct

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{

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gregset_t __ctx(gregs);

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/* Note that fpregs is a pointer. */

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fpregset_t __ctx(fpregs);

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__extension__ unsigned long long __reserved1 [8];

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} mcontext_t;

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/* Userlevel context. */

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typedef struct ucontext_t

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{

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unsigned long int __ctx(uc_flags);

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struct ucontext_t *uc_link;

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stack_t uc_stack;

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mcontext_t uc_mcontext;

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sigset_t uc_sigmask;

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struct _libc_fpstate __fpregs_mem;

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__extension__ unsigned long long int __ssp[4];

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} ucontext_t;

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#else /* !__x86_64__ */

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/* Type for general register. */

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typedef int greg_t;

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/* Number of general registers. */

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#define __NGREG 19

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#ifdef __USE_MISC

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# define NGREG __NGREG

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#endif

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/* Container for all general registers. */

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typedef greg_t gregset_t[__NGREG];

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#ifdef __USE_GNU

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/* Number of each register is the `gregset_t' array. */

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enum

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{

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REG_GS = 0,

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# define REG_GS REG_GS

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REG_FS,

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# define REG_FS REG_FS

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REG_ES,

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# define REG_ES REG_ES

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REG_DS,

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# define REG_DS REG_DS

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REG_EDI,

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# define REG_EDI REG_EDI

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REG_ESI,

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# define REG_ESI REG_ESI

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REG_EBP,

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# define REG_EBP REG_EBP

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REG_ESP,

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# define REG_ESP REG_ESP

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REG_EBX,

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# define REG_EBX REG_EBX

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REG_EDX,

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# define REG_EDX REG_EDX

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REG_ECX,

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# define REG_ECX REG_ECX

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REG_EAX,

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# define REG_EAX REG_EAX

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REG_TRAPNO,

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# define REG_TRAPNO REG_TRAPNO

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REG_ERR,

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# define REG_ERR REG_ERR

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REG_EIP,

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# define REG_EIP REG_EIP

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REG_CS,

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# define REG_CS REG_CS

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REG_EFL,

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# define REG_EFL REG_EFL

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REG_UESP,

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# define REG_UESP REG_UESP

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REG_SS

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# define REG_SS REG_SS

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};

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#endif

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/* Definitions taken from the kernel headers. */

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struct _libc_fpreg

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{

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unsigned short int __ctx(significand)[4];

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unsigned short int __ctx(exponent);

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};

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struct _libc_fpstate

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{

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unsigned long int __ctx(cw);

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unsigned long int __ctx(sw);

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unsigned long int __ctx(tag);

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unsigned long int __ctx(ipoff);

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unsigned long int __ctx(cssel);

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unsigned long int __ctx(dataoff);

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unsigned long int __ctx(datasel);

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struct _libc_fpreg _st[8];

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unsigned long int __ctx(status);

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};

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/* Structure to describe FPU registers. */

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typedef struct _libc_fpstate *fpregset_t;

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/* Context to describe whole processor state. */

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typedef struct

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{

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gregset_t __ctx(gregs);

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/* Due to Linux's history we have to use a pointer here. The SysV/i386

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ABI requires a struct with the values. */

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fpregset_t __ctx(fpregs);

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unsigned long int __ctx(oldmask);

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unsigned long int __ctx(cr2);

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} mcontext_t;

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/* Userlevel context. */

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typedef struct ucontext_t

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{

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unsigned long int __ctx(uc_flags);

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struct ucontext_t *uc_link;

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stack_t uc_stack;

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mcontext_t uc_mcontext;

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sigset_t uc_sigmask;

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struct _libc_fpstate __fpregs_mem;

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unsigned long int __ssp[4];

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} ucontext_t;

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#endif /* !__x86_64__ */

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#undef __ctx

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#endif /* sys/ucontext.h */

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