小弟是ARM的初学者，在看别人的程序时候有以下一段代码不明白。
void drvLcd_ReadResInConstArea(UInt32 uiCJKFontIndex,UInt8 *pDes,UInt32 size)
{
UInt32 CJKOffset;
UInt32 SizeOfOPermanentCode;
UInt32 *AddressOffsetOfOdpRegion;
UInt32 *AddressOffsetOfConstRegion;
UInt32 result;
__weak extern unsigned int Image$$ISRAM_PERM_RO_CACHED$$Base;
__weak extern unsigned int Image$$ODP_RO_CACHED_UMW$$Base;
__weak extern unsigned int Image$$ODP_RO_UNCACHED_UMW$$Base;
__weak extern unsigned int Image$$ISRAM_PERM_RO_UNCACHED$$Length;
__weak extern unsigned int Image$$ISRAM_RW_UNCACHED$$Length;
__weak extern unsigned int Image$$ISRAM_PERM_RO_CACHED$$Length;
__weak extern unsigned int Image$$ISRAM_RW_CACHED$$Length;
__weak extern unsigned int Image$$INT_VECT_AND_CODE$$Length;
__weak extern unsigned int Image$$CONST_DATA$$Base;
if(pDes==NULL)
{
return ;
}
其中：__weak extern unsigned int Image$$ISRAM_PERM_RO_CACHED$$Base;不明白是什么意思。
请各位大哥多多指教。 |
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