vcpu.h

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/*
 * (c) 2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
 *          Alexander Warg <warg@os.inf.tu-dresden.de>
 *     economic rights: Technische Universität Dresden (Germany)
 *
 * This file is part of TUD:OS and distributed under the terms of the
 * GNU General Public License 2.
 * Please see the COPYING-GPL-2 file for details.
 *
 * As a special exception, you may use this file as part of a free software
 * library without restriction.  Specifically, if other files instantiate
 * templates or use macros or inline functions from this file, or you compile
 * this file and link it with other files to produce an executable, this
 * file does not by itself cause the resulting executable to be covered by
 * the GNU General Public License.  This exception does not however
 * invalidate any other reasons why the executable file might be covered by
 * the GNU General Public License.
 */
#pragma once
 
#include <l4/sys/types.h>
#include <l4/sys/__vcpu-arch.h>
 
typedef struct l4_vcpu_state_t
{
  l4_umword_t          version;       
  l4_umword_t          user_data[7];  
  l4_vcpu_regs_t       r;             
  l4_vcpu_ipc_regs_t   i;             
 
  l4_uint16_t          state;         
  l4_uint16_t          saved_state;   
  l4_uint16_t          sticky_flags;  
  l4_uint16_t          _reserved;     
 
  l4_cap_idx_t         user_task;     
 
  l4_umword_t          entry_sp;      
  l4_umword_t          entry_ip;      
  l4_umword_t          reserved_sp;   
  l4_vcpu_arch_state_t arch_state;    
} l4_vcpu_state_t;
 
enum L4_vcpu_state_flags
{
  L4_VCPU_F_IRQ         = 0x01,
 
  L4_VCPU_F_PAGE_FAULTS = 0x02,
 
  L4_VCPU_F_EXCEPTIONS  = 0x04,
 
  L4_VCPU_F_USER_MODE   = 0x20,
 
  L4_VCPU_F_FPU_ENABLED = 0x80,
};
 
enum L4_vcpu_sticky_flags
{
  L4_VCPU_SF_IRQ_PENDING = 0x01,
};
 
enum L4_vcpu_state_offset
{
  L4_VCPU_OFFSET_EXT_STATE = 0x400, 
  L4_VCPU_OFFSET_EXT_INFOS = 0x200, 
};
 
L4_INLINE int
l4_vcpu_check_version(l4_vcpu_state_t const *vcpu) L4_NOTHROW;
 
/* IMPLEMENTATION: ------------------------------------------------*/
 
L4_INLINE int
l4_vcpu_check_version(l4_vcpu_state_t const *vcpu) L4_NOTHROW
{
  return vcpu->version == L4_VCPU_STATE_VERSION;
}