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e6676ca35f
* sysdeps/unix/sysv/linux/i386/sys/ucontext.h: Add definition of _fpreg and _fpstate and use it to define fpregset_t. * sysdeps/unix/sysv/linux/i386/sys/procfs.h (prgregset_t): Define using elf_gregset_t. (prfpregset_t): Define using elf_fpregset_t.
134 lines
3.0 KiB
C
134 lines
3.0 KiB
C
/* Copyright (C) 1997, 1998, 1999, 2000 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 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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/* We also need the definition of the userlevel data representation
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for the register contexts. */
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#include <sys/user.h>
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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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/* 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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GS = 0,
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# define GS GS
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FS,
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# define FS FS
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ES,
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# define ES ES
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DS,
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# define DS DS
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EDI,
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# define EDI EDI
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ESI,
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# define ESI ESI
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EBP,
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# define EBP EBP
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ESP,
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# define ESP ESP
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EBX,
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# define EBX EBX
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EDX,
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# define EDX EDX
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ECX,
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# define ECX ECX
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EAX,
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# define EAX EAX
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TRAPNO,
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# define TRAPNO TRAPNO
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ERR,
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# define ERR ERR
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EIP,
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# define EIP EIP
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CS,
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# define CS CS
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EFL,
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# define EFL EFL
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UESP,
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# define UESP UESP
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SS
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# define SS 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 _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 _fpstate
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{
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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 _fpreg _st[8];
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unsigned long int status;
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};
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/* Structure to describe FPU registers. */
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typedef struct _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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/* 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 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 _fpstate __fpregs_mem;
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} ucontext_t;
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#endif /* sys/ucontext.h */
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