mirror of git://sourceware.org/git/glibc.git
161 lines
3.6 KiB
C
161 lines
3.6 KiB
C
/* Copyright (C) 2001 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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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 <signal.h>
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/* We need the signal context definitions even if they are not used
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included in <signal.h>. */
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#include <bits/sigcontext.h>
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/* Type for general register. */
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typedef long int greg_t;
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/* Number of general registers. */
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#define NGREG 27
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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_GSFS = 0,
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# define REG_GSFS REG_GSFS
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REG_ESDS,
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# define REG_ESDS REG_ESDS
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REG_R8,
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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_RSP,
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# define REG_RSP REG_RSP
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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_RCX,
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# define REG_RCX REG_RCX
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REG_RAX,
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# define REG_RAX REG_RAX
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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_RIP,
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# define REG_RIP REG_RIP
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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_URSP,
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# define REG_URSP REG_URSP
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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 significand[4];
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unsigned short int exponent;
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};
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struct _libc_fpxreg
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{
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unsigned short int significand[4];
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unsigned short int exponent;
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unsigned short int padding[3];
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};
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struct _libc_xmmreg
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{
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unsigned long int element[4];
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};
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struct _libc_fpstate
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{
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/* Regular FPU environment. */
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unsigned long int cw;
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unsigned long int sw;
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unsigned long int tag;
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unsigned long int ipoff;
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unsigned long int cssel;
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unsigned long int dataoff;
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unsigned long int datasel;
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struct _libc_fpreg _st[16];
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unsigned short int status;
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unsigned short int magic;
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/* FXSR FPU environment. */
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unsigned long int _fxsr_env[6];
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unsigned long int mxcsr;
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unsigned long int reserved;
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struct _libc_fpxreg _fxsr_st[8];
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struct _libc_xmmreg _xmm[16];
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unsigned long int padding[32];
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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 gregs;
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fpregset_t fpregs;
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unsigned long int oldmask;
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unsigned long int cr2;
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} mcontext_t;
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/* Userlevel context. */
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typedef struct ucontext
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{
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unsigned long int uc_flags;
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struct ucontext *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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} ucontext_t;
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#endif /* sys/ucontext.h */
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