void CMyByteArray::ReallocateDataSpace( size_t szAddition )
{
//只有此条件才会分配空间,也即调用此函数前必须检测空间剩余
//assert(GetSpaceLeft()<szAddition);
//计算除去剩余空间后还应增加的空间大小
size_t left = szAddition - GetSpaceLeft();
//按分配粒度计算块数及剩余
size_t nBlocks = left / GetGranularity();
size_t cbRemain = left - nBlocks*GetGranularity();
if(cbRemain) ++nBlocks;
//计算新空间并重新分配
size_t newDataSize = m_iDataSize + nBlocks*GetGranularity();
void* pData = (void*)new char[newDataSize];
//复制原来的数据到新空间
//memcpy支持第3个参数传0吗?
if(GetSpaceUsed()) memcpy(pData,m_pData,GetSpaceUsed());
if(m_pData) delete[] m_pData;
m_pData = pData;
m_iDataSize = newDataSize;
}
static void GenerateLabel (unsigned Flags, unsigned Addr)
/* Generate a label in pass one if requested */
{
/* Generate labels in pass #1, and only if we don't have a label already */
if (Pass == 1 && !HaveLabel (Addr) &&
/* Check if we must create a label */
((Flags & flGenLabel) != 0 ||
((Flags & flUseLabel) != 0 && Addr >= CodeStart && Addr <= CodeEnd))) {
/* As a special case, handle ranges with tables or similar. Within
* such a range with a granularity > 1, do only generate dependent
* labels for all addresses but the first one. Be sure to generate
* a label for the start of the range, however.
*/
attr_t Style = GetStyleAttr (Addr);
unsigned Granularity = GetGranularity (Style);
if (Granularity == 1) {
/* Just add the label */
AddIntLabel (Addr);
} else {
/* THIS CODE IS A MESS AND WILL FAIL ON SEVERAL CONDITIONS! ### */
/* Search for the start of the range or the last non dependent
* label in the range.
*/
unsigned Offs;
attr_t LabelAttr;
unsigned LabelAddr = Addr;
while (LabelAddr > CodeStart) {
if (Style != GetStyleAttr (LabelAddr-1)) {
/* End of range reached */
break;
}
--LabelAddr;
LabelAttr = GetLabelAttr (LabelAddr);
if ((LabelAttr & (atIntLabel|atExtLabel)) != 0) {
/* The address has an internal or external label */
break;
}
}
/* If the proposed label address doesn't have a label, define one */
if ((GetLabelAttr (LabelAddr) & (atIntLabel|atExtLabel)) == 0) {
AddIntLabel (LabelAddr);
}
/* Create the label */
Offs = Addr - LabelAddr;
if (Offs == 0) {
AddIntLabel (Addr);
} else {
AddDepLabel (Addr, atIntLabel, GetLabelName (LabelAddr), Offs);
}
}
}
}