*/
void MM_PageFault(Uint Addr, Uint ErrorCode, tRegs *Regs)
{
- ENTER("xAddr bErrorCode", Addr, ErrorCode);
+ //ENTER("xAddr bErrorCode", Addr, ErrorCode);
// -- Check for COW --
if( gaPageDir [Addr>>22] & PF_PRESENT
gaPageTable[Addr>>12] &= PF_USER;
gaPageTable[Addr>>12] |= paddr|PF_PRESENT|PF_WRITE;
INVLPG( Addr & ~0xFFF );
- LEAVE('-');
+ //LEAVE('-')
return;
}
MM_DumpTables(0, -1);
Panic("Page Fault at 0x%x\n", Regs->eip);
- LEAVE('-');
}
/**
}
// Check if the page is already allocated
else if( gaPageTable[ VAddr >> 12 ] != 0 ) {
- Warning("MM_Allocate - Allocating to used address");
+ Warning("MM_Allocate - Allocating to used address (%p)", VAddr);
return gaPageTable[ VAddr >> 12 ] & ~0xFFF;
}
if( Flags & MM_PFLAG_KERNEL ) *ent &= ~PF_USER;
else *ent |= PF_USER;
}
+
+ // Copy-On-Write
+ if( Mask & MM_PFLAG_COW )
+ {
+ if( Flags & MM_PFLAG_COW ) {
+ *ent &= ~PF_WRITE;
+ *ent |= PF_COW;
+ }
+ else {
+ *ent &= ~PF_COW;
+ *ent |= PF_WRITE;
+ }
+ }
}
/**