thread-state.h

Real-time microkernel 小巧灵活的实时微内核

/* i386 thread state.
   Copyright 1999, 2000, 2001, 2002 Johan Rydberg, [e-mail].

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#ifndef __rtmk_i386_thread_state_h
#define __rtmk_i386_thread_state_h 1

#define THREAD_STATE_FLAVOR_I386_CPU	1
#define THREAD_STATE_FLAVOR_I386_LDT	2

/* This structure corresponds to the state of user registers
   as saved upon kernel entry.  It lives in the pcb.
   It is also pushed onto the stack for exceptions in the kernel.  */
struct thread_state_i386_cpu
{
  unsigned int  gs;
  unsigned int  fs;
  unsigned int  es;
  unsigned int  ds;
  unsigned int  edi;
  unsigned int  esi;
  unsigned int  ebp;
  unsigned int  cr2;    /* kernel esp stored by pusha -
                           we save cr2 here later */
  unsigned int  ebx;
  unsigned int  edx;
  unsigned int  ecx;
  unsigned int  eax;
  unsigned int  trapno;
  unsigned int  err;
  unsigned int  eip;
  unsigned int  cs;
  unsigned int  efl;
  unsigned int  uesp;
  unsigned int  ss;

  struct {
      unsigned int v86_es;  /* virtual 8086 segment registers */
      unsigned int v86_ds;
      unsigned int v86_fs;
      unsigned int v86_gs;
  } v86_segs;
};

typedef struct thread_state_i386_cpu thread_state_i386_cpu_t;

struct thread_state_i386_ldt
  {
    unsigned int offset;
    unsigned int size;
  };

typedef struct thread_state_i386_ldt thread_state_i386_ldt_t;

#endif /* thread-state.h */