* @brief A VMX-compatible equivalent of memcpy function in C for physical memory * * @param Destination * @param Source * @param Num * @param HasError * @return VOID */
| 450 | * @return VOID |
| 451 | */ |
| 452 | VOID |
| 453 | ScriptEngineFunctionMemcpyPa(UINT64 Destination, UINT64 Source, UINT32 Num, BOOL * HasError) |
| 454 | { |
| 455 | UINT64 PrevReadLen = 0; |
| 456 | BYTE MovingBuffer[DebuggerScriptEngineMemcpyMovingBufferSize] = {0}; |
| 457 | |
| 458 | #ifdef SCRIPT_ENGINE_USER_MODE |
| 459 | |
| 460 | // |
| 461 | // Show an error message in user-mode |
| 462 | // |
| 463 | ShowMessages("err, using physical address functions (memcpy_pa) is not possible in user-mode\n"); |
| 464 | return; |
| 465 | |
| 466 | #endif // SCRIPT_ENGINE_USER_MODE |
| 467 | |
| 468 | #ifdef SCRIPT_ENGINE_KERNEL_MODE |
| 469 | |
| 470 | // |
| 471 | // Check the destination address (physical) |
| 472 | // |
| 473 | if (!CheckAddressPhysical(Destination)) |
| 474 | { |
| 475 | *HasError = TRUE; |
| 476 | return; |
| 477 | } |
| 478 | |
| 479 | // |
| 480 | // Check the source address (physical) |
| 481 | // |
| 482 | if (!CheckAddressPhysical(Source)) |
| 483 | { |
| 484 | *HasError = TRUE; |
| 485 | return; |
| 486 | } |
| 487 | |
| 488 | // |
| 489 | // Address is valid, perform the memcpy in kernel-mode (VMX-root mode) |
| 490 | // |
| 491 | while (Num > 0) |
| 492 | { |
| 493 | // |
| 494 | // Check the target buffer size |
| 495 | // |
| 496 | if (Num > DebuggerScriptEngineMemcpyMovingBufferSize) |
| 497 | { |
| 498 | // |
| 499 | // *** The size of read buffer is greater to maximum the moving buffer size *** |
| 500 | // |
| 501 | |
| 502 | // |
| 503 | // Read memory into the buffer |
| 504 | // |
| 505 | MemoryMapperReadMemorySafeByPhysicalAddress(Source + PrevReadLen, (UINT64)MovingBuffer, DebuggerScriptEngineMemcpyMovingBufferSize); |
| 506 | |
| 507 | // |
| 508 | // Write the moving buffer into the target buffer |
| 509 | // |
no test coverage detected