| 424 | |
| 425 | |
| 426 | static ExprId ByteReverseRegister(LowLevelILFunction &il, uint32_t reg, size_t size) |
| 427 | { |
| 428 | ExprId swap = BN_INVALID_EXPR; |
| 429 | |
| 430 | for (size_t srcIndex = 0; srcIndex < size; srcIndex++) |
| 431 | { |
| 432 | ExprId extracted = il.Register(4, reg); |
| 433 | size_t dstIndex = size - srcIndex - 1; |
| 434 | |
| 435 | if (dstIndex > srcIndex) |
| 436 | { |
| 437 | ExprId mask = il.Const(4, 0xffull << (srcIndex * 8)); |
| 438 | extracted = il.And(4, extracted, mask); |
| 439 | extracted = il.ShiftLeft(4, extracted, il.Const(4, (dstIndex - srcIndex) * 8)); |
| 440 | } |
| 441 | else if (srcIndex > dstIndex) |
| 442 | { |
| 443 | ExprId mask = il.Const(4, 0xffull << (dstIndex * 8)); |
| 444 | extracted = il.LogicalShiftRight(4, extracted, il.Const(4, (srcIndex - dstIndex) * 8)); |
| 445 | extracted = il.And(4, extracted, mask); |
| 446 | } |
| 447 | |
| 448 | if (swap == BN_INVALID_EXPR) |
| 449 | swap = extracted; |
| 450 | else |
| 451 | swap = il.Or(4, swap, extracted); |
| 452 | } |
| 453 | |
| 454 | return swap; |
| 455 | } |
| 456 | |
| 457 | |
| 458 | static void ByteReversedLoad(LowLevelILFunction &il, struct cs_ppc* ppc, size_t size, size_t addressSize_a=4) |