Function SetRegValue

hyperdbg/script-eval/code/Regs.c:1002–2022

* @brief Set the register value * * @param GuestRegs * @param RegisterId * @param Value * * @return BOOLEAN */

 * @return BOOLEAN
 */
BOOLEAN
SetRegValue(PGUEST_REGS GuestRegs, UINT32 RegisterId, UINT64 Value)
{
    BOOLEAN Result = TRUE;

    switch (RegisterId)
    {
    case REGISTER_RAX:
        GuestRegs->rax = Value;

        break;

    case REGISTER_EAX:
        GuestRegs->rax = (GuestRegs->rax & UPPER_32_BITS) | (Value & LOWER_32_BITS);

        break;

    case REGISTER_AX:
        GuestRegs->rax = (GuestRegs->rax & UPPER_48_BITS) | (Value & LOWER_16_BITS);

        break;

    case REGISTER_AH:
        GuestRegs->rax = (GuestRegs->rax & UPPER_48_BITS_AND_LOWER_8_BITS) | ((Value << 8) & SECOND_LOWER_8_BITS);

        break;

    case REGISTER_AL:
        GuestRegs->rax = (GuestRegs->rax & UPPER_56_BITS) | (Value & LOWER_8_BITS);

        break;

    case REGISTER_RCX:
        GuestRegs->rcx = Value;

        break;
    case REGISTER_ECX:
        GuestRegs->rcx = (GuestRegs->rcx & UPPER_32_BITS) | (Value & LOWER_32_BITS);

        break;

    case REGISTER_CX:
        GuestRegs->rcx = (GuestRegs->rcx & UPPER_48_BITS) | (Value & LOWER_16_BITS);

        break;

    case REGISTER_CH:
        GuestRegs->rcx = (GuestRegs->rcx & UPPER_48_BITS_AND_LOWER_8_BITS) | ((Value << 8) & SECOND_LOWER_8_BITS);

        break;

    case REGISTER_CL:
        GuestRegs->rcx = (GuestRegs->rcx & UPPER_56_BITS) | (Value & LOWER_8_BITS);

        break;
    case REGISTER_RDX:
        GuestRegs->rdx = Value;