sha256_sse4.cpp

// Copyright (c) 2017-present 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).

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

#include <cstdint>
#include <cstdlib>

namespace sha256_sse4
{
void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks)
#if defined(__clang__)
  /*
  clang is unable to compile this with -O0 and -fsanitize=address.
  See upstream bug: https://github.com/llvm/llvm-project/issues/92182.
  This also fails to compile with -O2, -fcf-protection & -fsanitize=address.
  See https://github.com/bitcoin/bitcoin/issues/31913.
  */
#if __has_feature(address_sanitizer)
  __attribute__((no_sanitize("address")))
#endif
#endif
{
    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