| 428 | |
| 429 | #ifdef _MSC_VER |
| 430 | __declspec(naked) |
| 431 | #else |
| 432 | __attribute__ ((noinline)) |
| 433 | #endif |
| 434 | void Twofish::AsmEncrypt(const byte* inBlock, byte* outBlock) const |
| 435 | { |
| 436 | PROLOG() |
| 437 | |
| 438 | #ifdef OLD_GCC_OFFSET |
| 439 | AS2( add edi, 60 ) // k_ |
| 440 | #else |
| 441 | AS2( add edi, 56 ) // k_ |
| 442 | #endif |
| 443 | |
| 444 | AS2( mov ebp, edi ) |
| 445 | |
| 446 | AS2( mov eax, DWORD PTR [esi] ) // a |
| 447 | AS2( movd mm0, edi ) // store k_ |
| 448 | AS2( mov ebx, DWORD PTR [esi + 4] ) // b |
| 449 | AS2( add ebp, 160 ) // s_[0] |
| 450 | AS2( mov ecx, DWORD PTR [esi + 8] ) // c |
| 451 | AS2( movd mm1, ebp ) // store s_ |
| 452 | AS2( mov edx, DWORD PTR [esi + 12] ) // d |
| 453 | |
| 454 | AS2( xor eax, DWORD PTR [edi] ) // k_[0] |
| 455 | AS2( xor ebx, DWORD PTR [edi + 4] ) // [1] |
| 456 | AS2( xor ecx, DWORD PTR [edi + 8] ) // [2] |
| 457 | AS2( xor edx, DWORD PTR [edi + 12] ) // [3] |
| 458 | |
| 459 | |
| 460 | ASMENCROUND( 0, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 461 | ASMENCROUND( 1, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 462 | ASMENCROUND( 2, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 463 | ASMENCROUND( 3, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 464 | ASMENCROUND( 4, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 465 | ASMENCROUND( 5, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 466 | ASMENCROUND( 6, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 467 | ASMENCROUND( 7, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 468 | ASMENCROUND( 8, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 469 | ASMENCROUND( 9, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 470 | ASMENCROUND(10, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 471 | ASMENCROUND(11, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 472 | ASMENCROUND(12, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 473 | ASMENCROUND(13, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 474 | ASMENCROUND(14, eax, al, ah, ebx, bl, bh, ecx, edx) |
| 475 | ASMENCROUND(15, ecx, cl, ch, edx, dl, dh, eax, ebx) |
| 476 | |
| 477 | |
| 478 | AS2( movd ebp, mm6 ) |
| 479 | AS2( movd esi, mm0 ) // k_ |
| 480 | #ifdef __GNUC__ |
| 481 | AS2( movd edi, mm3 ) // outBlock |
| 482 | #else |
| 483 | AS2( mov edi, [ebp + 12] ) // outBlock |
| 484 | #endif |
| 485 | |
| 486 | AS2( xor ecx, DWORD PTR [esi + 16] ) // k_[4] |
| 487 | AS2( xor edx, DWORD PTR [esi + 20] ) // k_[5] |