fix MmAllocateContiguous, implement polling AHCI driver.

build.bat

@@ -71,6 +71,7 @@ link %LFLAGS% /SUBSYSTEM:NATIVE /ENTRY:KernelMain /OUT:"bin\kernel.exe" ^
     /PDB:"bin\kernel.pdb" /EXPORT:MmAllocatePool /EXPORT:MmFreePool /EXPORT:IoRegisterFilesystem ^
     /EXPORT:KeSignalEvent /EXPORT:MmAllocateContiguous /EXPORT:ObDereferenceObject /EXPORT:KeEventCreate ^
     /EXPORT:KeWaitForEvent /EXPORT:KeClearEvent /EXPORT:MmGetPhysicalAddress /EXPORT:DbgPrint /EXPORT:KeIrqDispatch ^
+    /EXPORT:MmMapPage /EXPORT:MmSetPageProtect ^
     bin\hal.lib obj\ini_parser.obj obj\printf.obj obj\libc.obj obj\kernel\*.obj || exit /b 1
 
 :: ---- Compile syscall.dll ----