sha256_sse4.cpp

// Copyright (c) 2017-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
//
// This is a translation to GCC extended asm syntax from YASM code by Intel
// (available at the bottom of this file).

#include <cstdlib>
#include <stdint.h>

#if defined(__x86_64__) || defined(__amd64__)

namespace sha256_sse4
{
void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks)
{
    static const uint32_t K256 alignas(16) [] = {
        0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
        0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
        0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
        0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
        0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
        0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
        0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
        0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
        0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
        0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
        0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
        0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
        0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
        0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
        0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
        0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
    };
    static const uint32_t FLIP_MASK alignas(16) [] = {0x00010203, 0x04050607, 0x08090a0b, 0x0c0d0e0f};
    static const uint32_t SHUF_00BA alignas(16) [] = {0x03020100, 0x0b0a0908, 0xffffffff, 0xffffffff};
    static const uint32_t SHUF_DC00 alignas(16) [] = {0xffffffff, 0xffffffff, 0x03020100, 0x0b0a0908};
    uint32_t a, b, c, d, f, g, h, y0, y1, y2;
    uint64_t tbl;
    uint64_t inp_end, inp;
    uint32_t xfer alignas(16) [4];

    __asm__ __volatile__(
        "shl    $0x6,%2;"
        "je     Ldone_hash_%=;"
        "add    %1,%2;"
        "mov    %2,%14;"
        "mov    (%0),%3;"
        "mov    0x4(%0),%4;"
        "mov    0x8(%0),%5;"
        "mov    0xc(%0),%6;"
        "mov    0x10(%0),%k2;"
        "mov    0x14(%0),%7;"
        "mov    0x18(%0),%8;"
        "mov    0x1c(%0),%9;"
        "movdqa %18,%%xmm12;"
        "movdqa %19,%%xmm10;"
        "movdqa %20,%%xmm11;"

        "Lloop0_%=:"
        "lea    %17,%13;"
        "movdqu (%1),%%xmm4;"
        "pshufb %%xmm12,%%xmm4;"
        "movdqu 0x10(%1),%%xmm5;"
        "pshufb %%xmm12,%%xmm5;"
        "movdqu 0x20(%1),%%xmm6;"
        "pshufb %%xmm12,%%xmm6;"
        "movdqu 0x30(%1),%%xmm7;"
        "pshufb %%xmm12,%%xmm7;"
        "mov    %1,%15;"
        "mov    $3,%1;"

        "Lloop1_%=:"
        "movdqa 0x0(%13),%%xmm9;"
        "paddd  %%xmm4,%%xmm9;"
        "movdqa %%xmm9,%16;"
        "movdqa %%xmm7,%%xmm0;"
        "mov    %k2,%10;"
        "ror    $0xe,%10;"
        "mov    %3,%11;"
        "palignr $0x4,%%xmm6,%%xmm0;"
        "ror    $0x9,%11;"
        "xor    %k2,%10;"
        "mov    %7,%12;"
        "ror    $0x5,%10;"
        "movdqa %%xmm5,%%xmm1;"
        "xor    %3,%11;"
        "xor    %8,%12;"
        "paddd  %%xmm4,%%xmm0;"
        "xor    %k2,%10;"
        "and    %k2,%12;"
        "ror    $0xb,%11;"
        "palignr $0x4,%%xmm4,%%xmm1;"
        "xor    %3,%11;"
        "ror    $0x6,%10;"
        "xor    %8,%12;"
        "movdqa %%xmm1,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    %16,%12;"
        "movdqa %%xmm1,%%xmm3;"
        "mov    %3,%10;"
        "add    %12,%9;"
        "mov    %3,%12;"
        "pslld  $0x19,%%xmm1;"
        "or     %5,%10;"
        "add    %9,%6;"
        "and    %5,%12;"
        "psrld  $0x7,%%xmm2;"
        "and    %4,%10;"
        "add    %11,%9;"
        "por    %%xmm2,%%xmm1;"
        "or     %12,%10;"
        "add    %10,%9;"
        "movdqa %%xmm3,%%xmm2;"
        "mov    %6,%10;"
        "mov    %9,%11;"
        "movdqa %%xmm3,%%xmm8;"
        "ror    $0xe,%10;"
        "xor    %6,%10;"
        "mov    %k2,%12;"
        "ror    $0x9,%11;"
        "pslld  $0xe,%%xmm3;"
        "xor    %9,%11;"
        "ror    $0x5,%10;"
        "xor    %7,%12;"
        "psrld  $0x12,%%xmm2;"
        "ror    $0xb,%11;"
        "xor    %6,%10;"
        "and    %6,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm1;"
        "xor    %9,%11;"
        "xor    %7,%12;"
        "psrld  $0x3,%%xmm8;"
        "add    %10,%12;"
        "add    4+%16,%12;"
        "ror    $0x2,%11;"
        "pxor   %%xmm2,%%xmm1;"
        "mov    %9,%10;"
        "add    %12,%8;"
        "mov    %9,%12;"
        "pxor   %%xmm8,%%xmm1;"
        "or     %4,%10;"
        "add    %8,%5;"
        "and    %4,%12;"
        "pshufd $0xfa,%%xmm7,%%xmm2;"
        "and    %3,%10;"
        "add    %11,%8;"
        "paddd  %%xmm1,%%xmm0;"
        "or     %12,%10;"
        "add    %10,%8;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %5,%10;"
        "mov    %8,%11;"
        "ror    $0xe,%10;"
        "movdqa %%xmm2,%%xmm8;"
        "xor    %5,%10;"
        "ror    $0x9,%11;"
        "mov    %6,%12;"
        "xor    %8,%11;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %k2,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %5,%10;"
        "and    %5,%12;"
        "psrld  $0xa,%%xmm8;"
        "ror    $0xb,%11;"
        "xor    %8,%11;"
        "xor    %k2,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm2;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    8+%16,%12;"
        "pxor   %%xmm2,%%xmm8;"
        "mov    %8,%10;"
        "add    %12,%7;"
        "mov    %8,%12;"
        "pshufb %%xmm10,%%xmm8;"
        "or     %3,%10;"
        "add    %7,%4;"
        "and    %3,%12;"
        "paddd  %%xmm8,%%xmm0;"
        "and    %9,%10;"
        "add    %11,%7;"
        "pshufd $0x50,%%xmm0,%%xmm2;"
        "or     %12,%10;"
        "add    %10,%7;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %4,%10;"
        "ror    $0xe,%10;"
        "mov    %7,%11;"
        "movdqa %%xmm2,%%xmm4;"
        "ror    $0x9,%11;"
        "xor    %4,%10;"
        "mov    %5,%12;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %7,%11;"
        "xor    %6,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %4,%10;"
        "and    %4,%12;"
        "ror    $0xb,%11;"
        "psrld  $0xa,%%xmm4;"
        "xor    %7,%11;"
        "ror    $0x6,%10;"
        "xor    %6,%12;"
        "pxor   %%xmm3,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    12+%16,%12;"
        "pxor   %%xmm2,%%xmm4;"
        "mov    %7,%10;"
        "add    %12,%k2;"
        "mov    %7,%12;"
        "pshufb %%xmm11,%%xmm4;"
        "or     %9,%10;"
        "add    %k2,%3;"
        "and    %9,%12;"
        "paddd  %%xmm0,%%xmm4;"
        "and    %8,%10;"
        "add    %11,%k2;"
        "or     %12,%10;"
        "add    %10,%k2;"
        "movdqa 0x10(%13),%%xmm9;"
        "paddd  %%xmm5,%%xmm9;"
        "movdqa %%xmm9,%16;"
        "movdqa %%xmm4,%%xmm0;"
        "mov    %3,%10;"
        "ror    $0xe,%10;"
        "mov    %k2,%11;"
        "palignr $0x4,%%xmm7,%%xmm0;"
        "ror    $0x9,%11;"
        "xor    %3,%10;"
        "mov    %4,%12;"
        "ror    $0x5,%10;"
        "movdqa %%xmm6,%%xmm1;"
        "xor    %k2,%11;"
        "xor    %5,%12;"
        "paddd  %%xmm5,%%xmm0;"
        "xor    %3,%10;"
        "and    %3,%12;"
        "ror    $0xb,%11;"
        "palignr $0x4,%%xmm5,%%xmm1;"
        "xor    %k2,%11;"
        "ror    $0x6,%10;"
        "xor    %5,%12;"
        "movdqa %%xmm1,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    %16,%12;"
        "movdqa %%xmm1,%%xmm3;"
        "mov    %k2,%10;"
        "add    %12,%6;"
        "mov    %k2,%12;"
        "pslld  $0x19,%%xmm1;"
        "or     %8,%10;"
        "add    %6,%9;"
        "and    %8,%12;"
        "psrld  $0x7,%%xmm2;"
        "and    %7,%10;"
        "add    %11,%6;"
        "por    %%xmm2,%%xmm1;"
        "or     %12,%10;"
        "add    %10,%6;"
        "movdqa %%xmm3,%%xmm2;"
        "mov    %9,%10;"
        "mov    %6,%11;"
        "movdqa %%xmm3,%%xmm8;"
        "ror    $0xe,%10;"
        "xor    %9,%10;"
        "mov    %3,%12;"
        "ror    $0x9,%11;"
        "pslld  $0xe,%%xmm3;"
        "xor    %6,%11;"
        "ror    $0x5,%10;"
        "xor    %4,%12;"
        "psrld  $0x12,%%xmm2;"
        "ror    $0xb,%11;"
        "xor    %9,%10;"
        "and    %9,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm1;"
        "xor    %6,%11;"
        "xor    %4,%12;"
        "psrld  $0x3,%%xmm8;"
        "add    %10,%12;"
        "add    4+%16,%12;"
        "ror    $0x2,%11;"
        "pxor   %%xmm2,%%xmm1;"
        "mov    %6,%10;"
        "add    %12,%5;"
        "mov    %6,%12;"
        "pxor   %%xmm8,%%xmm1;"
        "or     %7,%10;"
        "add    %5,%8;"
        "and    %7,%12;"
        "pshufd $0xfa,%%xmm4,%%xmm2;"
        "and    %k2,%10;"
        "add    %11,%5;"
        "paddd  %%xmm1,%%xmm0;"
        "or     %12,%10;"
        "add    %10,%5;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %8,%10;"
        "mov    %5,%11;"
        "ror    $0xe,%10;"
        "movdqa %%xmm2,%%xmm8;"
        "xor    %8,%10;"
        "ror    $0x9,%11;"
        "mov    %9,%12;"
        "xor    %5,%11;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %3,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %8,%10;"
        "and    %8,%12;"
        "psrld  $0xa,%%xmm8;"
        "ror    $0xb,%11;"
        "xor    %5,%11;"
        "xor    %3,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm2;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    8+%16,%12;"
        "pxor   %%xmm2,%%xmm8;"
        "mov    %5,%10;"
        "add    %12,%4;"
        "mov    %5,%12;"
        "pshufb %%xmm10,%%xmm8;"
        "or     %k2,%10;"
        "add    %4,%7;"
        "and    %k2,%12;"
        "paddd  %%xmm8,%%xmm0;"
        "and    %6,%10;"
        "add    %11,%4;"
        "pshufd $0x50,%%xmm0,%%xmm2;"
        "or     %12,%10;"
        "add    %10,%4;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %7,%10;"
        "ror    $0xe,%10;"
        "mov    %4,%11;"
        "movdqa %%xmm2,%%xmm5;"
        "ror    $0x9,%11;"
        "xor    %7,%10;"
        "mov    %8,%12;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %4,%11;"
        "xor    %9,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %7,%10;"
        "and    %7,%12;"
        "ror    $0xb,%11;"
        "psrld  $0xa,%%xmm5;"
        "xor    %4,%11;"
        "ror    $0x6,%10;"
        "xor    %9,%12;"
        "pxor   %%xmm3,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    12+%16,%12;"
        "pxor   %%xmm2,%%xmm5;"
        "mov    %4,%10;"
        "add    %12,%3;"
        "mov    %4,%12;"
        "pshufb %%xmm11,%%xmm5;"
        "or     %6,%10;"
        "add    %3,%k2;"
        "and    %6,%12;"
        "paddd  %%xmm0,%%xmm5;"
        "and    %5,%10;"
        "add    %11,%3;"
        "or     %12,%10;"
        "add    %10,%3;"
        "movdqa 0x20(%13),%%xmm9;"
        "paddd  %%xmm6,%%xmm9;"
        "movdqa %%xmm9,%16;"
        "movdqa %%xmm5,%%xmm0;"
        "mov    %k2,%10;"
        "ror    $0xe,%10;"
        "mov    %3,%11;"
        "palignr $0x4,%%xmm4,%%xmm0;"
        "ror    $0x9,%11;"
        "xor    %k2,%10;"
        "mov    %7,%12;"
        "ror    $0x5,%10;"
        "movdqa %%xmm7,%%xmm1;"
        "xor    %3,%11;"
        "xor    %8,%12;"
        "paddd  %%xmm6,%%xmm0;"
        "xor    %k2,%10;"
        "and    %k2,%12;"
        "ror    $0xb,%11;"
        "palignr $0x4,%%xmm6,%%xmm1;"
        "xor    %3,%11;"
        "ror    $0x6,%10;"
        "xor    %8,%12;"
        "movdqa %%xmm1,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    %16,%12;"
        "movdqa %%xmm1,%%xmm3;"
        "mov    %3,%10;"
        "add    %12,%9;"
        "mov    %3,%12;"
        "pslld  $0x19,%%xmm1;"
        "or     %5,%10;"
        "add    %9,%6;"
        "and    %5,%12;"
        "psrld  $0x7,%%xmm2;"
        "and    %4,%10;"
        "add    %11,%9;"
        "por    %%xmm2,%%xmm1;"
        "or     %12,%10;"
        "add    %10,%9;"
        "movdqa %%xmm3,%%xmm2;"
        "mov    %6,%10;"
        "mov    %9,%11;"
        "movdqa %%xmm3,%%xmm8;"
        "ror    $0xe,%10;"
        "xor    %6,%10;"
        "mov    %k2,%12;"
        "ror    $0x9,%11;"
        "pslld  $0xe,%%xmm3;"
        "xor    %9,%11;"
        "ror    $0x5,%10;"
        "xor    %7,%12;"
        "psrld  $0x12,%%xmm2;"
        "ror    $0xb,%11;"
        "xor    %6,%10;"
        "and    %6,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm1;"
        "xor    %9,%11;"
        "xor    %7,%12;"
        "psrld  $0x3,%%xmm8;"
        "add    %10,%12;"
        "add    4+%16,%12;"
        "ror    $0x2,%11;"
        "pxor   %%xmm2,%%xmm1;"
        "mov    %9,%10;"
        "add    %12,%8;"
        "mov    %9,%12;"
        "pxor   %%xmm8,%%xmm1;"
        "or     %4,%10;"
        "add    %8,%5;"
        "and    %4,%12;"
        "pshufd $0xfa,%%xmm5,%%xmm2;"
        "and    %3,%10;"
        "add    %11,%8;"
        "paddd  %%xmm1,%%xmm0;"
        "or     %12,%10;"
        "add    %10,%8;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %5,%10;"
        "mov    %8,%11;"
        "ror    $0xe,%10;"
        "movdqa %%xmm2,%%xmm8;"
        "xor    %5,%10;"
        "ror    $0x9,%11;"
        "mov    %6,%12;"
        "xor    %8,%11;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %k2,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %5,%10;"
        "and    %5,%12;"
        "psrld  $0xa,%%xmm8;"
        "ror    $0xb,%11;"
        "xor    %8,%11;"
        "xor    %k2,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm2;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    8+%16,%12;"
        "pxor   %%xmm2,%%xmm8;"
        "mov    %8,%10;"
        "add    %12,%7;"
        "mov    %8,%12;"
        "pshufb %%xmm10,%%xmm8;"
        "or     %3,%10;"
        "add    %7,%4;"
        "and    %3,%12;"
        "paddd  %%xmm8,%%xmm0;"
        "and    %9,%10;"
        "add    %11,%7;"
        "pshufd $0x50,%%xmm0,%%xmm2;"
        "or     %12,%10;"
        "add    %10,%7;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %4,%10;"
        "ror    $0xe,%10;"
        "mov    %7,%11;"
        "movdqa %%xmm2,%%xmm6;"
        "ror    $0x9,%11;"
        "xor    %4,%10;"
        "mov    %5,%12;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %7,%11;"
        "xor    %6,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %4,%10;"
        "and    %4,%12;"
        "ror    $0xb,%11;"
        "psrld  $0xa,%%xmm6;"
        "xor    %7,%11;"
        "ror    $0x6,%10;"
        "xor    %6,%12;"
        "pxor   %%xmm3,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    12+%16,%12;"
        "pxor   %%xmm2,%%xmm6;"
        "mov    %7,%10;"
        "add    %12,%k2;"
        "mov    %7,%12;"
        "pshufb %%xmm11,%%xmm6;"
        "or     %9,%10;"
        "add    %k2,%3;"
        "and    %9,%12;"
        "paddd  %%xmm0,%%xmm6;"
        "and    %8,%10;"
        "add    %11,%k2;"
        "or     %12,%10;"
        "add    %10,%k2;"
        "movdqa 0x30(%13),%%xmm9;"
        "paddd  %%xmm7,%%xmm9;"
        "movdqa %%xmm9,%16;"
        "add    $0x40,%13;"
        "movdqa %%xmm6,%%xmm0;"
        "mov    %3,%10;"
        "ror    $0xe,%10;"
        "mov    %k2,%11;"
        "palignr $0x4,%%xmm5,%%xmm0;"
        "ror    $0x9,%11;"
        "xor    %3,%10;"
        "mov    %4,%12;"
        "ror    $0x5,%10;"
        "movdqa %%xmm4,%%xmm1;"
        "xor    %k2,%11;"
        "xor    %5,%12;"
        "paddd  %%xmm7,%%xmm0;"
        "xor    %3,%10;"
        "and    %3,%12;"
        "ror    $0xb,%11;"
        "palignr $0x4,%%xmm7,%%xmm1;"
        "xor    %k2,%11;"
        "ror    $0x6,%10;"
        "xor    %5,%12;"
        "movdqa %%xmm1,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    %16,%12;"
        "movdqa %%xmm1,%%xmm3;"
        "mov    %k2,%10;"
        "add    %12,%6;"
        "mov    %k2,%12;"
        "pslld  $0x19,%%xmm1;"
        "or     %8,%10;"
        "add    %6,%9;"
        "and    %8,%12;"
        "psrld  $0x7,%%xmm2;"
        "and    %7,%10;"
        "add    %11,%6;"
        "por    %%xmm2,%%xmm1;"
        "or     %12,%10;"
        "add    %10,%6;"
        "movdqa %%xmm3,%%xmm2;"
        "mov    %9,%10;"
        "mov    %6,%11;"
        "movdqa %%xmm3,%%xmm8;"
        "ror    $0xe,%10;"
        "xor    %9,%10;"
        "mov    %3,%12;"
        "ror    $0x9,%11;"
        "pslld  $0xe,%%xmm3;"
        "xor    %6,%11;"
        "ror    $0x5,%10;"
        "xor    %4,%12;"
        "psrld  $0x12,%%xmm2;"
        "ror    $0xb,%11;"
        "xor    %9,%10;"
        "and    %9,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm1;"
        "xor    %6,%11;"
        "xor    %4,%12;"
        "psrld  $0x3,%%xmm8;"
        "add    %10,%12;"
        "add    4+%16,%12;"
        "ror    $0x2,%11;"
        "pxor   %%xmm2,%%xmm1;"
        "mov    %6,%10;"
        "add    %12,%5;"
        "mov    %6,%12;"
        "pxor   %%xmm8,%%xmm1;"
        "or     %7,%10;"
        "add    %5,%8;"
        "and    %7,%12;"
        "pshufd $0xfa,%%xmm6,%%xmm2;"
        "and    %k2,%10;"
        "add    %11,%5;"
        "paddd  %%xmm1,%%xmm0;"
        "or     %12,%10;"
        "add    %10,%5;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %8,%10;"
        "mov    %5,%11;"
        "ror    $0xe,%10;"
        "movdqa %%xmm2,%%xmm8;"
        "xor    %8,%10;"
        "ror    $0x9,%11;"
        "mov    %9,%12;"
        "xor    %5,%11;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %3,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %8,%10;"
        "and    %8,%12;"
        "psrld  $0xa,%%xmm8;"
        "ror    $0xb,%11;"
        "xor    %5,%11;"
        "xor    %3,%12;"
        "ror    $0x6,%10;"
        "pxor   %%xmm3,%%xmm2;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    8+%16,%12;"
        "pxor   %%xmm2,%%xmm8;"
        "mov    %5,%10;"
        "add    %12,%4;"
        "mov    %5,%12;"
        "pshufb %%xmm10,%%xmm8;"
        "or     %k2,%10;"
        "add    %4,%7;"
        "and    %k2,%12;"
        "paddd  %%xmm8,%%xmm0;"
        "and    %6,%10;"
        "add    %11,%4;"
        "pshufd $0x50,%%xmm0,%%xmm2;"
        "or     %12,%10;"
        "add    %10,%4;"
        "movdqa %%xmm2,%%xmm3;"
        "mov    %7,%10;"
        "ror    $0xe,%10;"
        "mov    %4,%11;"
        "movdqa %%xmm2,%%xmm7;"
        "ror    $0x9,%11;"
        "xor    %7,%10;"
        "mov    %8,%12;"
        "ror    $0x5,%10;"
        "psrlq  $0x11,%%xmm2;"
        "xor    %4,%11;"
        "xor    %9,%12;"
        "psrlq  $0x13,%%xmm3;"
        "xor    %7,%10;"
        "and    %7,%12;"
        "ror    $0xb,%11;"
        "psrld  $0xa,%%xmm7;"
        "xor    %4,%11;"
        "ror    $0x6,%10;"
        "xor    %9,%12;"
        "pxor   %%xmm3,%%xmm2;"
        "ror    $0x2,%11;"
        "add    %10,%12;"
        "add    12+%16,%12;"
        "pxor   %%xmm2,%%xmm7;"
        "mov    %4,%10;"
        "add    %12,%3;"
        "mov    %4,%12;"
        "pshufb %%xmm11,%%xmm7;"
        "or     %6,%10;"
        "add    %3,%k2;"
        "and    %6,%12;"
        "paddd  %%xmm0,%%xmm7;"
        "and    %5,%10;"
        "add    %11,%3;"
        "or     %12,%10;"
        "add    %10,%3;"
        "sub    $0x1,%1;"
        "jne    Lloop1_%=;"
        "mov    $0x2,%1;"

        "Lloop2_%=:"
        "paddd  0x0(%13),%%xmm4;"
        "movdqa %%xmm4,%16;"
        "mov    %k2,%10;"
        "ror    $0xe,%10;"
        "mov    %3,%11;"
        "xor    %k2,%10;"
        "ror    $0x9,%11;"
        "mov    %7,%12;"
        "xor    %3,%11;"
        "ror    $0x5,%10;"
        "xor    %8,%12;"
        "xor    %k2,%10;"
        "ror    $0xb,%11;"
        "and    %k2,%12;"
        "xor    %3,%11;"
        "ror    $0x6,%10;"
        "xor    %8,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    %16,%12;"
        "mov    %3,%10;"
        "add    %12,%9;"
        "mov    %3,%12;"
        "or     %5,%10;"
        "add    %9,%6;"
        "and    %5,%12;"
        "and    %4,%10;"
        "add    %11,%9;"
        "or     %12,%10;"
        "add    %10,%9;"
        "mov    %6,%10;"
        "ror    $0xe,%10;"
        "mov    %9,%11;"
        "xor    %6,%10;"
        "ror    $0x9,%11;"
        "mov    %k2,%12;"
        "xor    %9,%11;"
        "ror    $0x5,%10;"
        "xor    %7,%12;"
        "xor    %6,%10;"
        "ror    $0xb,%11;"
        "and    %6,%12;"
        "xor    %9,%11;"
        "ror    $0x6,%10;"
        "xor    %7,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    4+%16,%12;"
        "mov    %9,%10;"
        "add    %12,%8;"
        "mov    %9,%12;"
        "or     %4,%10;"
        "add    %8,%5;"
        "and    %4,%12;"
        "and    %3,%10;"
        "add    %11,%8;"
        "or     %12,%10;"
        "add    %10,%8;"
        "mov    %5,%10;"
        "ror    $0xe,%10;"
        "mov    %8,%11;"
        "xor    %5,%10;"
        "ror    $0x9,%11;"
        "mov    %6,%12;"
        "xor    %8,%11;"
        "ror    $0x5,%10;"
        "xor    %k2,%12;"
        "xor    %5,%10;"
        "ror    $0xb,%11;"
        "and    %5,%12;"
        "xor    %8,%11;"
        "ror    $0x6,%10;"
        "xor    %k2,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    8+%16,%12;"
        "mov    %8,%10;"
        "add    %12,%7;"
        "mov    %8,%12;"
        "or     %3,%10;"
        "add    %7,%4;"
        "and    %3,%12;"
        "and    %9,%10;"
        "add    %11,%7;"
        "or     %12,%10;"
        "add    %10,%7;"
        "mov    %4,%10;"
        "ror    $0xe,%10;"
        "mov    %7,%11;"
        "xor    %4,%10;"
        "ror    $0x9,%11;"
        "mov    %5,%12;"
        "xor    %7,%11;"
        "ror    $0x5,%10;"
        "xor    %6,%12;"
        "xor    %4,%10;"
        "ror    $0xb,%11;"
        "and    %4,%12;"
        "xor    %7,%11;"
        "ror    $0x6,%10;"
        "xor    %6,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    12+%16,%12;"
        "mov    %7,%10;"
        "add    %12,%k2;"
        "mov    %7,%12;"
        "or     %9,%10;"
        "add    %k2,%3;"
        "and    %9,%12;"
        "and    %8,%10;"
        "add    %11,%k2;"
        "or     %12,%10;"
        "add    %10,%k2;"
        "paddd  0x10(%13),%%xmm5;"
        "movdqa %%xmm5,%16;"
        "add    $0x20,%13;"
        "mov    %3,%10;"
        "ror    $0xe,%10;"
        "mov    %k2,%11;"
        "xor    %3,%10;"
        "ror    $0x9,%11;"
        "mov    %4,%12;"
        "xor    %k2,%11;"
        "ror    $0x5,%10;"
        "xor    %5,%12;"
        "xor    %3,%10;"
        "ror    $0xb,%11;"
        "and    %3,%12;"
        "xor    %k2,%11;"
        "ror    $0x6,%10;"
        "xor    %5,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    %16,%12;"
        "mov    %k2,%10;"
        "add    %12,%6;"
        "mov    %k2,%12;"
        "or     %8,%10;"
        "add    %6,%9;"
        "and    %8,%12;"
        "and    %7,%10;"
        "add    %11,%6;"
        "or     %12,%10;"
        "add    %10,%6;"
        "mov    %9,%10;"
        "ror    $0xe,%10;"
        "mov    %6,%11;"
        "xor    %9,%10;"
        "ror    $0x9,%11;"
        "mov    %3,%12;"
        "xor    %6,%11;"
        "ror    $0x5,%10;"
        "xor    %4,%12;"
        "xor    %9,%10;"
        "ror    $0xb,%11;"
        "and    %9,%12;"
        "xor    %6,%11;"
        "ror    $0x6,%10;"
        "xor    %4,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    4+%16,%12;"
        "mov    %6,%10;"
        "add    %12,%5;"
        "mov    %6,%12;"
        "or     %7,%10;"
        "add    %5,%8;"
        "and    %7,%12;"
        "and    %k2,%10;"
        "add    %11,%5;"
        "or     %12,%10;"
        "add    %10,%5;"
        "mov    %8,%10;"
        "ror    $0xe,%10;"
        "mov    %5,%11;"
        "xor    %8,%10;"
        "ror    $0x9,%11;"
        "mov    %9,%12;"
        "xor    %5,%11;"
        "ror    $0x5,%10;"
        "xor    %3,%12;"
        "xor    %8,%10;"
        "ror    $0xb,%11;"
        "and    %8,%12;"
        "xor    %5,%11;"
        "ror    $0x6,%10;"
        "xor    %3,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    8+%16,%12;"
        "mov    %5,%10;"
        "add    %12,%4;"
        "mov    %5,%12;"
        "or     %k2,%10;"
        "add    %4,%7;"
        "and    %k2,%12;"
        "and    %6,%10;"
        "add    %11,%4;"
        "or     %12,%10;"
        "add    %10,%4;"
        "mov    %7,%10;"
        "ror    $0xe,%10;"
        "mov    %4,%11;"
        "xor    %7,%10;"
        "ror    $0x9,%11;"
        "mov    %8,%12;"
        "xor    %4,%11;"
        "ror    $0x5,%10;"
        "xor    %9,%12;"
        "xor    %7,%10;"
        "ror    $0xb,%11;"
        "and    %7,%12;"
        "xor    %4,%11;"
        "ror    $0x6,%10;"
        "xor    %9,%12;"
        "add    %10,%12;"
        "ror    $0x2,%11;"
        "add    12+%16,%12;"
        "mov    %4,%10;"
        "add    %12,%3;"
        "mov    %4,%12;"
        "or     %6,%10;"
        "add    %3,%k2;"
        "and    %6,%12;"
        "and    %5,%10;"
        "add    %11,%3;"
        "or     %12,%10;"
        "add    %10,%3;"
        "movdqa %%xmm6,%%xmm4;"
        "movdqa %%xmm7,%%xmm5;"
        "sub    $0x1,%1;"
        "jne    Lloop2_%=;"
        "add    (%0),%3;"
        "mov    %3,(%0);"
        "add    0x4(%0),%4;"
        "mov    %4,0x4(%0);"
        "add    0x8(%0),%5;"
        "mov    %5,0x8(%0);"
        "add    0xc(%0),%6;"
        "mov    %6,0xc(%0);"
        "add    0x10(%0),%k2;"
        "mov    %k2,0x10(%0);"
        "add    0x14(%0),%7;"
        "mov    %7,0x14(%0);"
        "add    0x18(%0),%8;"
        "mov    %8,0x18(%0);"
        "add    0x1c(%0),%9;"
        "mov    %9,0x1c(%0);"
        "mov    %15,%1;"
        "add    $0x40,%1;"
        "cmp    %14,%1;"
        "jne    Lloop0_%=;"

        "Ldone_hash_%=:"

        : "+r"(s), "+r"(chunk), "+r"(blocks), "=r"(a), "=r"(b), "=r"(c), "=r"(d), /* e = chunk */ "=r"(f), "=r"(g), "=r"(h), "=r"(y0), "=r"(y1), "=r"(y2), "=r"(tbl), "+m"(inp_end), "+m"(inp), "+m"(xfer)
        : "m"(K256), "m"(FLIP_MASK), "m"(SHUF_00BA), "m"(SHUF_DC00)
        : "cc", "memory", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7", "xmm8", "xmm9", "xmm10", "xmm11", "xmm12"
   );
}
}

/*
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Copyright (c) 2012, Intel Corporation 
; 
; All rights reserved. 
; 
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are
; met: 
; 
; * Redistributions of source code must retain the above copyright
;   notice, this list of conditions and the following disclaimer.  
; 
; * Redistributions in binary form must reproduce the above copyright
;   notice, this list of conditions and the following disclaimer in the
;   documentation and/or other materials provided with the
;   distribution. 
; 
; * Neither the name of the Intel Corporation nor the names of its
;   contributors may be used to endorse or promote products derived from
;   this software without specific prior written permission. 
; 
; 
; THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION "AS IS" AND ANY
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; Example YASM command lines:
; Windows:  yasm -Xvc -f x64 -rnasm -pnasm -o sha256_sse4.obj -g cv8 sha256_sse4.asm
; Linux:    yasm -f x64 -f elf64 -X gnu -g dwarf2 -D LINUX -o sha256_sse4.o sha256_sse4.asm
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; This code is described in an Intel White-Paper:
; "Fast SHA-256 Implementations on Intel Architecture Processors"
;
; To find it, surf to https://www.intel.com/p/en_US/embedded
; and search for that title.
; The paper is expected to be released roughly at the end of April, 2012
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This code schedules 1 blocks at a time, with 4 lanes per block
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

%define	MOVDQ movdqu ;; assume buffers not aligned 

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Define Macros

; addm [mem], reg
; Add reg to mem using reg-mem add and store
%macro addm 2
    add	%2, %1
    mov	%1, %2
%endm

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

; COPY_XMM_AND_BSWAP xmm, [mem], byte_flip_mask
; Load xmm with mem and byte swap each dword
%macro COPY_XMM_AND_BSWAP 3
    MOVDQ %1, %2
    pshufb %1, %3
%endmacro

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

%define X0 xmm4
%define X1 xmm5
%define X2 xmm6
%define X3 xmm7

%define XTMP0 xmm0
%define XTMP1 xmm1
%define XTMP2 xmm2
%define XTMP3 xmm3
%define XTMP4 xmm8
%define XFER  xmm9

%define SHUF_00BA	xmm10 ; shuffle xBxA -> 00BA
%define SHUF_DC00	xmm11 ; shuffle xDxC -> DC00
%define BYTE_FLIP_MASK	xmm12
    
%ifdef LINUX
%define NUM_BLKS rdx	; 3rd arg
%define CTX	rsi	; 2nd arg
%define INP	rdi	; 1st arg

%define SRND	rdi	; clobbers INP
%define c	ecx
%define d 	r8d
%define e 	edx
%else
%define NUM_BLKS r8	; 3rd arg
%define CTX	rdx 	; 2nd arg
%define INP	rcx 	; 1st arg

%define SRND	rcx	; clobbers INP
%define c 	edi 
%define d	esi 
%define e 	r8d
    
%endif
%define TBL	rbp
%define a eax
%define b ebx

%define f r9d
%define g r10d
%define h r11d

%define y0 r13d
%define y1 r14d
%define y2 r15d



_INP_END_SIZE	equ 8
_INP_SIZE	equ 8
_XFER_SIZE	equ 8
%ifdef LINUX
_XMM_SAVE_SIZE	equ 0
%else
_XMM_SAVE_SIZE	equ 7*16
%endif
; STACK_SIZE plus pushes must be an odd multiple of 8
_ALIGN_SIZE	equ 8

_INP_END	equ 0
_INP		equ _INP_END  + _INP_END_SIZE
_XFER		equ _INP      + _INP_SIZE
_XMM_SAVE	equ _XFER     + _XFER_SIZE + _ALIGN_SIZE
STACK_SIZE	equ _XMM_SAVE + _XMM_SAVE_SIZE

; rotate_Xs
; Rotate values of symbols X0...X3
%macro rotate_Xs 0
%xdefine X_ X0
%xdefine X0 X1
%xdefine X1 X2
%xdefine X2 X3
%xdefine X3 X_
%endm

; ROTATE_ARGS
; Rotate values of symbols a...h
%macro ROTATE_ARGS 0
%xdefine TMP_ h
%xdefine h g
%xdefine g f
%xdefine f e
%xdefine e d
%xdefine d c
%xdefine c b
%xdefine b a
%xdefine a TMP_
%endm

%macro FOUR_ROUNDS_AND_SCHED 0
	;; compute s0 four at a time and s1 two at a time
	;; compute W[-16] + W[-7] 4 at a time
	movdqa	XTMP0, X3
    mov	y0, e		; y0 = e
    ror	y0, (25-11)	; y0 = e >> (25-11)
    mov	y1, a		; y1 = a
	palignr	XTMP0, X2, 4	; XTMP0 = W[-7]
    ror	y1, (22-13)	; y1 = a >> (22-13)
    xor	y0, e		; y0 = e ^ (e >> (25-11))
    mov	y2, f		; y2 = f
    ror	y0, (11-6)	; y0 = (e >> (11-6)) ^ (e >> (25-6))
	movdqa	XTMP1, X1
    xor	y1, a		; y1 = a ^ (a >> (22-13)
    xor	y2, g		; y2 = f^g
	paddd	XTMP0, X0	; XTMP0 = W[-7] + W[-16]
    xor	y0, e		; y0 = e ^ (e >> (11-6)) ^ (e >> (25-6))
    and	y2, e		; y2 = (f^g)&e
    ror	y1, (13-2)	; y1 = (a >> (13-2)) ^ (a >> (22-2))
	;; compute s0
	palignr	XTMP1, X0, 4	; XTMP1 = W[-15]
    xor	y1, a		; y1 = a ^ (a >> (13-2)) ^ (a >> (22-2))
    ror	y0, 6		; y0 = S1 = (e>>6) & (e>>11) ^ (e>>25)
    xor	y2, g		; y2 = CH = ((f^g)&e)^g
	movdqa	XTMP2, XTMP1	; XTMP2 = W[-15]
    ror	y1, 2		; y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22)
    add	y2, y0		; y2 = S1 + CH
    add	y2, [rsp + _XFER + 0*4]	; y2 = k + w + S1 + CH
	movdqa	XTMP3, XTMP1	; XTMP3 = W[-15]
    mov	y0, a		; y0 = a
    add	h, y2		; h = h + S1 + CH + k + w
    mov	y2, a		; y2 = a
	pslld	XTMP1, (32-7)
    or	y0, c		; y0 = a|c
    add	d, h		; d = d + h + S1 + CH + k + w
    and	y2, c		; y2 = a&c
	psrld	XTMP2, 7
    and	y0, b		; y0 = (a|c)&b
    add	h, y1		; h = h + S1 + CH + k + w + S0
	por	XTMP1, XTMP2	; XTMP1 = W[-15] ror 7
    or	y0, y2		; y0 = MAJ = (a|c)&b)|(a&c)
    add	h, y0		; h = h + S1 + CH + k + w + S0 + MAJ

ROTATE_ARGS
	movdqa	XTMP2, XTMP3	; XTMP2 = W[-15]
    mov	y0, e		; y0 = e
    mov	y1, a		; y1 = a
	movdqa	XTMP4, XTMP3	; XTMP4 = W[-15]
    ror	y0, (25-11)	; y0 = e >> (25-11)
    xor	y0, e		; y0 = e ^ (e >> (25-11))
    mov	y2, f		; y2 = f
    ror	y1, (22-13)	; y1 = a >> (22-13)
	pslld	XTMP3, (32-18)
    xor	y1, a		; y1 = a ^ (a >> (22-13)
    ror	y0, (11-6)	; y0 = (e >> (11-6)) ^ (e >> (25-6))
    xor	y2, g		; y2 = f^g
	psrld	XTMP2, 18
    ror	y1, (13-2)	; y1 = (a >> (13-2)) ^ (a >> (22-2))
    xor	y0, e		; y0 = e ^ (e >> (11-6)) ^ (e >> (25-6))
    and	y2, e		; y2 = (f^g)&e
    ror	y0, 6		; y0 = S1 = (e>>6) & (e>>11) ^ (e>>25)
	pxor	XTMP1, XTMP3
    xor	y1, a		; y1 = a ^ (a >> (13-2)) ^ (a >> (22-2))
    xor	y2, g		; y2 = CH = ((f^g)&e)^g
	psrld	XTMP4, 3	; XTMP4 = W[-15] >> 3
    add	y2, y0		; y2 = S1 + CH
    add	y2, [rsp + _XFER + 1*4]	; y2 = k + w + S1 + CH
    ror	y1, 2		; y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22)
	pxor	XTMP1, XTMP2	; XTMP1 = W[-15] ror 7 ^ W[-15] ror 18
    mov	y0, a		; y0 = a
    add	h, y2		; h = h + S1 + CH + k + w
    mov	y2, a		; y2 = a
	pxor	XTMP1, XTMP4	; XTMP1 = s0
    or	y0, c		; y0 = a|c
    add	d, h		; d = d + h + S1 + CH + k + w
    and	y2, c		; y2 = a&c
	;; compute low s1
	pshufd	XTMP2, X3, 11111010b	; XTMP2 = W[-2] {BBAA}
    and	y0, b		; y0 = (a|c)&b
    add	h, y1		; h = h + S1 + CH + k + w + S0
	paddd	XTMP0, XTMP1	; XTMP0 = W[-16] + W[-7] + s0
    or	y0, y2		; y0 = MAJ = (a|c)&b)|(a&c)
    add	h, y0		; h = h + S1 + CH + k + w + S0 + MAJ

ROTATE_ARGS
	movdqa	XTMP3, XTMP2	; XTMP3 = W[-2] {BBAA}
    mov	y0, e		; y0 = e
    mov	y1, a		; y1 = a
    ror	y0, (25-11)	; y0 = e >> (25-11)
	movdqa	XTMP4, XTMP2	; XTMP4 = W[-2] {BBAA}
    xor	y0, e		; y0 = e ^ (e >> (25-11))
    ror	y1, (22-13)	; y1 = a >> (22-13)
    mov	y2, f		; y2 = f
    xor	y1, a		; y1 = a ^ (a >> (22-13)
    ror	y0, (11-6)	; y0 = (e >> (11-6)) ^ (e >> (25-6))
	psrlq	XTMP2, 17	; XTMP2 = W[-2] ror 17 {xBxA}
    xor	y2, g		; y2 = f^g
	psrlq	XTMP3, 19	; XTMP3 = W[-2] ror 19 {xBxA}
    xor	y0, e		; y0 = e ^ (e >> (11-6)) ^ (e >> (25-6))
    and	y2, e		; y2 = (f^g)&e
	psrld	XTMP4, 10	; XTMP4 = W[-2] >> 10 {BBAA}
    ror	y1, (13-2)	; y1 = (a >> (13-2)) ^ (a >> (22-2))
    xor	y1, a		; y1 = a ^ (a >> (13-2)) ^ (a >> (22-2))
    xor	y2, g		; y2 = CH = ((f^g)&e)^g
    ror	y0, 6		; y0 = S1 = (e>>6) & (e>>11) ^ (e>>25)
	pxor	XTMP2, XTMP3
    add	y2, y0		; y2 = S1 + CH
    ror	y1, 2		; y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22)
    add	y2, [rsp + _XFER + 2*4]	; y2 = k + w + S1 + CH
	pxor	XTMP4, XTMP2	; XTMP4 = s1 {xBxA}
    mov	y0, a		; y0 = a
    add	h, y2		; h = h + S1 + CH + k + w
    mov	y2, a		; y2 = a
	pshufb	XTMP4, SHUF_00BA	; XTMP4 = s1 {00BA}
    or	y0, c		; y0 = a|c
    add	d, h		; d = d + h + S1 + CH + k + w
    and	y2, c		; y2 = a&c
	paddd	XTMP0, XTMP4	; XTMP0 = {..., ..., W[1], W[0]}
    and	y0, b		; y0 = (a|c)&b
    add	h, y1		; h = h + S1 + CH + k + w + S0
	;; compute high s1
	pshufd	XTMP2, XTMP0, 01010000b	; XTMP2 = W[-2] {DDCC}
    or	y0, y2		; y0 = MAJ = (a|c)&b)|(a&c)
    add	h, y0		; h = h + S1 + CH + k + w + S0 + MAJ

ROTATE_ARGS
	movdqa	XTMP3, XTMP2	; XTMP3 = W[-2] {DDCC}
    mov	y0, e		; y0 = e
    ror	y0, (25-11)	; y0 = e >> (25-11)
    mov	y1, a		; y1 = a
	movdqa	X0,    XTMP2	; X0    = W[-2] {DDCC}
    ror	y1, (22-13)	; y1 = a >> (22-13)
    xor	y0, e		; y0 = e ^ (e >> (25-11))
    mov	y2, f		; y2 = f
    ror	y0, (11-6)	; y0 = (e >> (11-6)) ^ (e >> (25-6))
	psrlq	XTMP2, 17	; XTMP2 = W[-2] ror 17 {xDxC}
    xor	y1, a		; y1 = a ^ (a >> (22-13)
    xor	y2, g		; y2 = f^g
	psrlq	XTMP3, 19	; XTMP3 = W[-2] ror 19 {xDxC}
    xor	y0, e		; y0 = e ^ (e >> (11-6)) ^ (e >> (25-6))
    and	y2, e		; y2 = (f^g)&e
    ror	y1, (13-2)	; y1 = (a >> (13-2)) ^ (a >> (22-2))
	psrld	X0,    10	; X0 = W[-2] >> 10 {DDCC}
    xor	y1, a		; y1 = a ^ (a >> (13-2)) ^ (a >> (22-2))
    ror	y0, 6		; y0 = S1 = (e>>6) & (e>>11) ^ (e>>25)
    xor	y2, g		; y2 = CH = ((f^g)&e)^g
	pxor	XTMP2, XTMP3
    ror	y1, 2		; y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22)
    add	y2, y0		; y2 = S1 + CH
    add	y2, [rsp + _XFER + 3*4]	; y2 = k + w + S1 + CH
	pxor	X0, XTMP2	; X0 = s1 {xDxC}
    mov	y0, a		; y0 = a
    add	h, y2		; h = h + S1 + CH + k + w
    mov	y2, a		; y2 = a
	pshufb	X0, SHUF_DC00	; X0 = s1 {DC00}
    or	y0, c		; y0 = a|c
    add	d, h		; d = d + h + S1 + CH + k + w
    and	y2, c		; y2 = a&c
	paddd	X0, XTMP0	; X0 = {W[3], W[2], W[1], W[0]}
    and	y0, b		; y0 = (a|c)&b
    add	h, y1		; h = h + S1 + CH + k + w + S0
    or	y0, y2		; y0 = MAJ = (a|c)&b)|(a&c)
    add	h, y0		; h = h + S1 + CH + k + w + S0 + MAJ

ROTATE_ARGS
rotate_Xs
%endm

;; input is [rsp + _XFER + %1 * 4]
%macro DO_ROUND 1
    mov	y0, e		; y0 = e
    ror	y0, (25-11)	; y0 = e >> (25-11)
    mov	y1, a		; y1 = a
    xor	y0, e		; y0 = e ^ (e >> (25-11))
    ror	y1, (22-13)	; y1 = a >> (22-13)
    mov	y2, f		; y2 = f
    xor	y1, a		; y1 = a ^ (a >> (22-13)
    ror	y0, (11-6)	; y0 = (e >> (11-6)) ^ (e >> (25-6))
    xor	y2, g		; y2 = f^g
    xor	y0, e		; y0 = e ^ (e >> (11-6)) ^ (e >> (25-6))
    ror	y1, (13-2)	; y1 = (a >> (13-2)) ^ (a >> (22-2))
    and	y2, e		; y2 = (f^g)&e
    xor	y1, a		; y1 = a ^ (a >> (13-2)) ^ (a >> (22-2))
    ror	y0, 6		; y0 = S1 = (e>>6) & (e>>11) ^ (e>>25)
    xor	y2, g		; y2 = CH = ((f^g)&e)^g
    add	y2, y0		; y2 = S1 + CH
    ror	y1, 2		; y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22)
    add	y2, [rsp + _XFER + %1 * 4]	; y2 = k + w + S1 + CH
    mov	y0, a		; y0 = a
    add	h, y2		; h = h + S1 + CH + k + w
    mov	y2, a		; y2 = a
    or	y0, c		; y0 = a|c
    add	d, h		; d = d + h + S1 + CH + k + w
    and	y2, c		; y2 = a&c
    and	y0, b		; y0 = (a|c)&b
    add	h, y1		; h = h + S1 + CH + k + w + S0
    or	y0, y2		; y0 = MAJ = (a|c)&b)|(a&c)
    add	h, y0		; h = h + S1 + CH + k + w + S0 + MAJ
    ROTATE_ARGS
%endm

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; void sha256_sse4(void *input_data, UINT32 digest[8], UINT64 num_blks)
;; arg 1 : pointer to input data
;; arg 2 : pointer to digest
;; arg 3 : Num blocks
section .text
global sha256_sse4
align 32
sha256_sse4:
    push	rbx
%ifndef LINUX
    push	rsi
    push	rdi
%endif
    push	rbp
    push	r13
    push	r14
    push	r15

    sub	rsp,STACK_SIZE
%ifndef LINUX
    movdqa	[rsp + _XMM_SAVE + 0*16],xmm6	
    movdqa	[rsp + _XMM_SAVE + 1*16],xmm7
    movdqa	[rsp + _XMM_SAVE + 2*16],xmm8	
    movdqa	[rsp + _XMM_SAVE + 3*16],xmm9	
    movdqa	[rsp + _XMM_SAVE + 4*16],xmm10
    movdqa	[rsp + _XMM_SAVE + 5*16],xmm11
    movdqa	[rsp + _XMM_SAVE + 6*16],xmm12
%endif

    shl	NUM_BLKS, 6	; convert to bytes
    jz	done_hash
    add	NUM_BLKS, INP	; pointer to end of data
    mov	[rsp + _INP_END], NUM_BLKS

    ;; load initial digest
    mov	a,[4*0 + CTX]
    mov	b,[4*1 + CTX]
    mov	c,[4*2 + CTX]
    mov	d,[4*3 + CTX]
    mov	e,[4*4 + CTX]
    mov	f,[4*5 + CTX]
    mov	g,[4*6 + CTX]
    mov	h,[4*7 + CTX]

    movdqa	BYTE_FLIP_MASK, [PSHUFFLE_BYTE_FLIP_MASK wrt rip]
    movdqa	SHUF_00BA, [_SHUF_00BA wrt rip]
    movdqa	SHUF_DC00, [_SHUF_DC00 wrt rip]

loop0:
    lea	TBL,[K256 wrt rip]

    ;; byte swap first 16 dwords
    COPY_XMM_AND_BSWAP	X0, [INP + 0*16], BYTE_FLIP_MASK
    COPY_XMM_AND_BSWAP	X1, [INP + 1*16], BYTE_FLIP_MASK
    COPY_XMM_AND_BSWAP	X2, [INP + 2*16], BYTE_FLIP_MASK
    COPY_XMM_AND_BSWAP	X3, [INP + 3*16], BYTE_FLIP_MASK
    
    mov	[rsp + _INP], INP

    ;; schedule 48 input dwords, by doing 3 rounds of 16 each
    mov	SRND, 3
align 16
loop1:
    movdqa	XFER, [TBL + 0*16]
    paddd	XFER, X0
    movdqa	[rsp + _XFER], XFER
    FOUR_ROUNDS_AND_SCHED

    movdqa	XFER, [TBL + 1*16]
    paddd	XFER, X0
    movdqa	[rsp + _XFER], XFER
    FOUR_ROUNDS_AND_SCHED

    movdqa	XFER, [TBL + 2*16]
    paddd	XFER, X0
    movdqa	[rsp + _XFER], XFER
    FOUR_ROUNDS_AND_SCHED

    movdqa	XFER, [TBL + 3*16]
    paddd	XFER, X0
    movdqa	[rsp + _XFER], XFER
    add	TBL, 4*16
    FOUR_ROUNDS_AND_SCHED

    sub	SRND, 1
    jne	loop1

    mov	SRND, 2
loop2:
    paddd	X0, [TBL + 0*16]
    movdqa	[rsp + _XFER], X0
    DO_ROUND	0
    DO_ROUND	1
    DO_ROUND	2
    DO_ROUND	3
    paddd	X1, [TBL + 1*16]
    movdqa	[rsp + _XFER], X1
    add	TBL, 2*16
    DO_ROUND	0
    DO_ROUND	1
    DO_ROUND	2
    DO_ROUND	3

    movdqa	X0, X2
    movdqa	X1, X3

    sub	SRND, 1
    jne	loop2

    addm	[4*0 + CTX],a
    addm	[4*1 + CTX],b
    addm	[4*2 + CTX],c
    addm	[4*3 + CTX],d
    addm	[4*4 + CTX],e
    addm	[4*5 + CTX],f
    addm	[4*6 + CTX],g
    addm	[4*7 + CTX],h

    mov	INP, [rsp + _INP]
    add	INP, 64
    cmp	INP, [rsp + _INP_END]
    jne	loop0

done_hash:
%ifndef LINUX
    movdqa	xmm6,[rsp + _XMM_SAVE + 0*16]
    movdqa	xmm7,[rsp + _XMM_SAVE + 1*16]
    movdqa	xmm8,[rsp + _XMM_SAVE + 2*16]
    movdqa	xmm9,[rsp + _XMM_SAVE + 3*16]
    movdqa	xmm10,[rsp + _XMM_SAVE + 4*16]
    movdqa	xmm11,[rsp + _XMM_SAVE + 5*16]
    movdqa	xmm12,[rsp + _XMM_SAVE + 6*16]
%endif

    add	rsp, STACK_SIZE

    pop	r15
    pop	r14
    pop	r13
    pop	rbp
%ifndef LINUX
    pop	rdi
    pop	rsi
%endif
    pop	rbx

    ret	
    

section .data
align 64
K256:
    dd	0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
    dd	0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
    dd	0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
    dd	0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
    dd	0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
    dd	0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
    dd	0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
    dd	0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
    dd	0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
    dd	0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
    dd	0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
    dd	0xd192e819,0xd6990624,0xf40e3585,0x106aa070
    dd	0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
    dd	0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
    dd	0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
    dd	0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2

PSHUFFLE_BYTE_FLIP_MASK: ddq 0x0c0d0e0f08090a0b0405060700010203

; shuffle xBxA -> 00BA
_SHUF_00BA:              ddq 0xFFFFFFFFFFFFFFFF0b0a090803020100

; shuffle xDxC -> DC00
_SHUF_DC00:              ddq 0x0b0a090803020100FFFFFFFFFFFFFFFF
*/

#endif