wfirmware.cpp

Go to the documentation of this file.

#include "precompiled.h"
#include "lib/sysdep/os/win/wfirmware.h"

#include "lib/sysdep/os/win/wutil.h"

namespace wfirmware {

TableIds GetTableIDs(Provider provider)
{
    WUTIL_FUNC(pEnumSystemFirmwareTables, UINT, (DWORD, PVOID, DWORD));
    WUTIL_IMPORT_KERNEL32(EnumSystemFirmwareTables, pEnumSystemFirmwareTables);
    if(!pEnumSystemFirmwareTables)
        return TableIds();

    const size_t tableIdsSize = pEnumSystemFirmwareTables(provider, 0, 0);
    ENSURE(tableIdsSize != 0);
    ENSURE(tableIdsSize % sizeof(TableId) == 0);
    TableIds tableIDs(DivideRoundUp(tableIdsSize, sizeof(TableId)), 0);

    const size_t bytesWritten = pEnumSystemFirmwareTables(provider, &tableIDs[0], (DWORD)tableIdsSize);
    ENSURE(bytesWritten == tableIdsSize);

    return tableIDs;
}


Table GetTable(Provider provider, TableId tableId)
{
    WUTIL_FUNC(pGetSystemFirmwareTable, UINT, (DWORD, DWORD, PVOID, DWORD));
    WUTIL_IMPORT_KERNEL32(GetSystemFirmwareTable, pGetSystemFirmwareTable);
    if(!pGetSystemFirmwareTable)
        return Table();

    const size_t tableSize = pGetSystemFirmwareTable(provider, tableId, 0, 0);
    if(tableSize == 0)
    {
        DEBUG_WARN_ERR(ERR::LOGIC);
        return Table();
    }

    Table table(tableSize, 0);
    const size_t bytesWritten = pGetSystemFirmwareTable(provider, tableId, &table[0], (DWORD)tableSize);
    ENSURE(bytesWritten == tableSize);

    return table;
}

}   // namespace wfirmware