Function ScriptEngineExecute

hyperdbg/script-eval/code/ScriptEngineEval.c:296–2410

* @brief Execute the script buffer * * @param GuestRegs General purpose registers * @param ActionDetail Detail of the specific action * @param ScriptGeneralRegisters of core specific (and global) variable holders * @param CodeBuffer The script buffer to be executed * @param Indx Script Buffer index * @param ErrorOperator Error in operator * @return BOOL */

 * @return BOOL
 */
BOOL
ScriptEngineExecute(PGUEST_REGS                      GuestRegs,
                    ACTION_BUFFER *                  ActionDetail,
                    PSCRIPT_ENGINE_GENERAL_REGISTERS ScriptGeneralRegisters,
                    SYMBOL_BUFFER *                  CodeBuffer,
                    UINT64 *                         Indx,
                    SYMBOL *                         ErrorOperator)
{
    PSYMBOL Operator;
    PSYMBOL Src0;
    PSYMBOL Src1;
    PSYMBOL Src2;

    PSYMBOL Des;
    UINT64  SrcVal0;
    UINT64  SrcVal1;
    UINT64  SrcVal2;

    UINT64 DesVal;
    BOOL   HasError = FALSE;

    Operator = (PSYMBOL)((unsigned long long)CodeBuffer->Head +
                         (unsigned long long)(*Indx * sizeof(SYMBOL)));

    *ErrorOperator = *Operator;

    *Indx = *Indx + 1;

    if (Operator->Type != SYMBOL_SEMANTIC_RULE_TYPE)
    {
#ifdef SCRIPT_ENGINE_USER_MODE
        ShowMessages("err, expecting operator type\n");
        return HasError;
#endif // SCRIPT_ENGINE_USER_MODE
    };

    switch (Operator->Value)
    {
    case FUNC_ED:

        Src0 = (PSYMBOL)((unsigned long long)CodeBuffer->Head +
                         (unsigned long long)(*Indx * sizeof(SYMBOL)));

        *Indx = *Indx + 1;

        SrcVal0 =
            GetValue(GuestRegs, ActionDetail, ScriptGeneralRegisters, Src0, FALSE);

        Src1 = (PSYMBOL)((unsigned long long)CodeBuffer->Head +
                         (unsigned long long)(*Indx * sizeof(SYMBOL)));

        *Indx = *Indx + 1;

        SrcVal1 =
            GetValue(GuestRegs, ActionDetail, ScriptGeneralRegisters, Src1, FALSE);

        Des = (PSYMBOL)((unsigned long long)CodeBuffer->Head +
                        (unsigned long long)(*Indx * sizeof(SYMBOL)));