73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
U0 BlkPoolAdd(CBlkPool *bp,CMemBlk *m,I64 pages512)
|
|
{//Add mem to BlkPool.
|
|
if (sys_mem_init_flag)
|
|
MemSet(m,sys_mem_init_val,pages512*512);
|
|
PUSHFD
|
|
CLI
|
|
while (LBts(&bp->locked_flags,BPlf_LOCKED))
|
|
PAUSE
|
|
m->next=bp->mem_free_lst;
|
|
m->pages=pages512;
|
|
m->mb_signature=MBS_UNUSED_SIGNATURE_VAL;
|
|
bp->alloced_u8s+=pages512<<PAGE_BITS;
|
|
bp->mem_free_lst=m;
|
|
LBtr(&bp->locked_flags,BPlf_LOCKED);
|
|
POPFD
|
|
}
|
|
|
|
U0 BlkPoolInit(CBlkPool *bp,I64 pages512)
|
|
{//Make mem chunk into a BlkPool.
|
|
I64 num;
|
|
CMemBlk *m;
|
|
MemSet(bp,0,sizeof(CBlkPool));
|
|
m=(bp(U8 *)+sizeof(CBlkPool)+PAGE_SIZE-1)&~(PAGE_SIZE-1);
|
|
num=(bp(U8 *)+pages512<<PAGE_BITS-m(U8 *))>>PAGE_BITS;
|
|
bp->alloced_u8s=(pages512-num)<<PAGE_BITS; //Compensate before num added.
|
|
BlkPoolAdd(bp,m,num);
|
|
}
|
|
|
|
U0 BlkPoolsInit()
|
|
{
|
|
I64 i,total,lo,hi,code_heap_limit;
|
|
CMemE820 *m20=SYS_MEM_E820;
|
|
Bool first=TRUE;
|
|
|
|
total=BIOSTotalMem;
|
|
|
|
if (total<=0x80000000)
|
|
code_heap_limit=total;
|
|
else if (total<=0x100000000)
|
|
code_heap_limit=total/4;
|
|
else
|
|
code_heap_limit=0x80000000;
|
|
|
|
i=code_heap_limit-0x1000000;
|
|
BlkPoolAdd(sys_code_bp,0x1000000,i>>PAGE_BITS);
|
|
sys_heap_limit=i+0x1000000-1;
|
|
|
|
if (code_heap_limit<total) {
|
|
while (m20->type) {
|
|
if (m20->type==1) {
|
|
lo=m20->base;
|
|
hi=m20->base+m20->len;
|
|
if (lo<code_heap_limit) {
|
|
if (hi>code_heap_limit)
|
|
lo=code_heap_limit;
|
|
else
|
|
hi=lo; //cancel
|
|
}
|
|
if (code_heap_limit<=lo<hi) {
|
|
if (first) {
|
|
BlkPoolInit(lo,(hi-lo)>>PAGE_BITS);
|
|
sys_data_bp=lo;
|
|
Fs->data_heap=HeapCtrlInit(,Fs,sys_data_bp);
|
|
first=FALSE;
|
|
} else
|
|
BlkPoolAdd(sys_data_bp,lo,(hi-lo)>>PAGE_BITS);
|
|
}
|
|
}
|
|
m20++;
|
|
}
|
|
}
|
|
}
|