/****************************************************************************
 *
 * (c) Copyright 2001,2008, EMB system, All Rights Reserved.
 * THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF EMB SYSTEM, INC.
 * The copyright notice above does not evidence any actual or intended
 * publication of such source code. 
 *
 *  Subsystem:   EMOS
 *  File:        emos_cpu.h
 *  Author:      zenf zhao
 *  Description: embedded software system queue management implement
 *
 ****************************************************************************/
#ifndef  _EMOS_CPU_H_
#define  _EMOS_CPU_H_
#include    <stdio.h>
#include    <string.h>
#include    <ctype.h>
#include    <stdlib.h>
#include    "emos_inc.h"

#define EMOS_CPU_MINGW_MODE
//#define CPU_80X86_BCC


#ifdef CPU_80X86_BCC
#include    <stdio.h>
#include    <string.h>
#include    <ctype.h>
#include    <stdlib.h>
#include    <setjmp.h>

/* *********************************************************************************************************
*  Intel 80x86 (Real-Mode, Large Model)
*
* Method #1:  Disable/Enable interrupts using simple instructions.  After critical section, interrupts
*             will be enabled even if they were disabled before entering the critical section.  You MUST
*             change the constant in OS_CPU_A.ASM, function OSIntCtxSw() from 10 to 8.
*
* Method #2:  Disable/Enable interrupts by preserving the state of interrupts.  In other words, if 
*             interrupts were disabled before entering the critical section, they will be disabled when
*             leaving the critical section.  You MUST change the constant in OS_CPU_A.ASM, function 
*             OSIntCtxSw() from 8 to 10.
**********************************************************************************************************/
#ifdef EMOS_SIMULATION 
#define  EMOS_ENTER_CRITICAL()     printf("take interrupt\r\n")
#define  EMOS_EXIT_CRITICAL()      printf("give interrupt\r\n")
#else
#define  EMOS_CRITICAL_METHOD    2
#if      EMOS_CRITICAL_METHOD == 1
#define  EMOS_ENTER_CRITICAL()    asm  CLI                /* Disable interrupts                            */
#define  EMOS_EXIT_CRITICAL()     asm  STI                /* Enable  interrupts                            */
#endif

#if      EMOS_CRITICAL_METHOD == 2
#define  EMOS_ENTER_CRITICAL()    asm {PUSHF; CLI}        /* Disable interrupts                            */
#define  EMOS_EXIT_CRITICAL()     asm  POPF               /* Enable  interrupts                            */
#endif
#endif

/**********************************************************************************************************
*                           Intel 80x86 (Real-Mode, Large Model) Miscellaneous
**********************************************************************************************************/
/* Stack grows from HIGH to LOW memory on 80x86  */
#define  CPU_STK_GROWTH         1          

/* Interrupt vector # used for context switch    */
#define  EMOS_ISR_NUM           0x80

#ifdef EMOS_SIMULATION                     
#define  EMOS_TASK_SW()         printf("emos interrupt gen\r\n") 
#else
#define  EMOS_TASK_SW()         asm  INT   EMOS_ISR_NUM
#endif


/* Counter used to invoke DOS's tick handler every 'n' ticks  */
extern  uint8  gEmosTickDosCtr;       

/*end of define CPU_80X86*/
#endif 


#ifdef EMOS_CPU_MINGW_MODE
#include <windows.h>

//#define _WIN32_WINNT          0x0400 
#define  EMOS_CPU_EXT           extern
#define  CPU_STK_GROWTH         1  

#define  EMOS_TASK_SW()         SetEvent(gEmosCtxSwW32Event)
EMOS_CPU_EXT  CRITICAL_SECTION  gEmosCriticalSection;
EMOS_CPU_EXT  HANDLE            gEmosCtxSwW32Event;


void     EMOS_SLEEP();  /* Recommend to insert call of this function in Idle task */
void     EMOS_STOP();

void     EMOS_INIT_CRITICAL();
void     EMOS_ENTER_CRITICAL();
void     EMOS_EXIT_CRITICAL();

void     emosStartHighRdy();
void     emosIntCtxSw();
void     emosInitHookBegin(void);

typedef struct {
    void    *pData;
    uint16   opt;
    void    (*task)(void*);
    HANDLE   handle;
    uint32   id;
    int      exit;
} EMOS_EMU_STK;
#endif




#endif
/*
 * Please add "$" around "Id" and "Log".
 * $Id$
 * $Log$
 *
 */