sys_mem.c

来自「abstract rtos」· C语言 代码 · 共 75 行

#include "syscfg.h"

#ifdef __cplusplus
#if __cplusplus
extern "C"{
#endif 
#endif 



#include "sys/sys_pub.h"
#include "os/dmem_pub.h"
#include "os/assert_pub.h"






AOS_ASSERTFILE();



VOID* sys_mem_alloc( U32 nBytes  )
{
    return (VOID*)malloc( nBytes );
}

VOID sys_mem_free( VOID*ptr )
{
    free( ptr );
}

U32 sys_page_get( VOID**ppvStart, U32 *pulPageNum )
{
    U32 ulSartAddr;

    AOS_ASSERT( NULL != ppvStart && NULL != pulPageNum );
    if((ppvStart == NULL) || (pulPageNum == NULL))
    {
        return AOS_FAIL;
    }

    AOS_ASSERT(CONFIG_MEM_SIZE > 2*MEM_PAGE_SIZE );
    
    ulSartAddr = (U32)sys_mem_alloc(CONFIG_MEM_SIZE);
    if( NULL == ulSartAddr )
    {
         *pulPageNum = 0;
         return AOS_FAIL;
    }
    *pulPageNum = CONFIG_MEM_SIZE/MEM_PAGE_SIZE;
    
    if( ulSartAddr & (MEM_PAGE_SIZE-1) )
    {
        ulSartAddr >>= MEM_PAGE_ORDER;
        ulSartAddr++;
        ulSartAddr <<= MEM_PAGE_ORDER;
        (*pulPageNum)--;
        (*pulPageNum)--;
    }

	*ppvStart = (VOID*)ulSartAddr;

    return AOS_SUCC;
}



#ifdef __cplusplus
#if __cplusplus
}
#endif 
#endif