//----------------------------------------------------
//Copyright (C), 2004-2009,  lst.
//版權(quán)所有 (C), 2004-2009,   lst.
//所屬模塊: 內(nèi)核模塊
//作者：lst
//版本：V1.0.0
//文件描述: 預(yù)加載操作系統(tǒng)
//其他說明:
//修訂歷史:
//    2. ...
//    1. 日期:
//       作者:
//       新版本號：
//       修改說明:
//------------------------------------------------------
#include "inc_os.h"
#include <string.h>
void sys_start(void);

extern uint8_t init_start[];
extern uint8_t init_limit[];
extern uint8_t text_preload_load_start[];
extern uint8_t text_preload_run_start[];
extern uint8_t text_preload_run_limit[];
extern uint8_t rodata_preload_load_start[];
extern uint8_t rodata_preload_run_start[];
extern uint8_t rodata_preload_run_limit[];
extern uint8_t rw_preload_load_start[];
extern uint8_t rw_preload_run_start[];
extern uint8_t rw_preload_run_limit[];
extern uint8_t zi_preload_start[];
extern uint8_t zi_preload_limit[];

//----預(yù)加載程序---------------------------------------------------------------
//功能：加載主加載器、中斷管理模塊，緊急代碼
//參數(shù): 無。
//返回: 無。
//----------------------------------------------------------------------------
//備注: 本函數(shù)移植關(guān)鍵，與開發(fā)系統(tǒng)有關(guān)，也與目標(biāo)硬件配置有關(guān)
void load_preload(void)
{
    uint8_t *src,*des;
    void (*volatile pl_1st)(void) = sys_start;

    if(text_preload_run_start != text_preload_load_start)       //拷貝代碼段
    {
        for(src=text_preload_load_start,des=text_preload_run_start;
                                        des<text_preload_run_limit;src++,des++)
            *des=*src;
    }
    if(rodata_preload_run_start != rodata_preload_load_start)   //拷貝只讀數(shù)據(jù)段
    {
        for(src=rodata_preload_load_start,des=rodata_preload_run_start;
                                    des<rodata_preload_run_limit;src++,des++)
            *des=*src;
    }
    if(rw_preload_run_start != rw_preload_load_start)       //拷貝初始化數(shù)據(jù)段
    {
        for(src=rw_preload_load_start,des=rw_preload_run_start;
                                    des<rw_preload_run_limit;src++,des++)
            *des=*src;
    }
    for(src=zi_preload_start;src<zi_preload_limit;src++)
        *src=0;

    pl_1st();
}