/*******************************************************************************
* Copyright 2020 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/

#include "common_u8.hpp"
#include "jit_generator.hpp"

namespace mkldnn {
namespace impl {
namespace cpu {

jit_sse41_u8_copy_bn_kern::jit_sse41_u8_copy_bn_kern()
        : jit_generator(nullptr, U8_COPY_KERNEL_CODE_SIZE) {

#ifndef _WIN32
#define M rdi
#define N rsi
#define A rdx
#define LDA rcx
#define ALPHA r8
#define B r9

#define I rax
#define A1 r10
#define A2 r8
#define LDA3 r11

#else

#define M rcx
#define N rdx
#define A r8
#define LDA r9
#define ALPHA rax
#define B rdi

#define I rax
#define A1 rsi
#define A2 r10
#define LDA3 r11

#define ARG_ALPHA 40 + stacksize + rsp
#define ARG_B 48 + stacksize + rsp

#endif

    inLocalLabel();
    {

        Xbyak::Label l118;
        Xbyak::Label l126;
        Xbyak::Label l130;
        Xbyak::Label l140;
        Xbyak::Label l15c;
        Xbyak::Label l17c;
        Xbyak::Label l19c;
        Xbyak::Label l1b8;
        Xbyak::Label l1d0;
        Xbyak::Label l1e0;
        Xbyak::Label l20;
        Xbyak::Label l38;
        Xbyak::Label l70;
        Xbyak::Label l9c;
        Xbyak::Label lc8;
        Xbyak::Label lf8;

        preamble();
#ifdef _WIN32
        auto stacksize = get_size_of_abi_save_regs();
        mov(ALPHA, ptr[ARG_ALPHA]);
        mov(B, ptr[ARG_B]);
#endif

        mov(N, qword[N]);
        mov(M, qword[M]);
        mov(LDA, qword[LDA]);
        sub(A, -128);
        sub(B, -128);
        lea(LDA3, ptr[LDA + LDA * 2]);
        cmp(N, 0x2);
        jl(l126, T_NEAR);
        align(4);

        L(l20);
        mov(A1, A);
        lea(A2, ptr[A1 + LDA * 1]);
        lea(I, ptr[A1 + LDA * 2]);
        mov(A, I);
        mov(I, M);
        sar(I, 0x4);
        jle(l70, T_NEAR);
        align(4);

        L(l38);
        movdqu(xmm0, xword[A1 - 0x80]);
        sub(A1, -16);
        movdqu(xmm1, xword[A2 - 0x80]);
        sub(A2, -16);
        movdqa(xmm2, xmm0);
        punpckldq(xmm0, xmm1);
        punpckhdq(xmm2, xmm1);
        movdqu(xword[B - 0x80], xmm0);
        movdqu(xword[B - 0x70], xmm2);
        sub(B, -32);
        dec(I);
        jg(l38, T_NEAR);
        align(4);

        L(l70);
        test(M, 0x8);
        jle(l9c, T_NEAR);
        movq(xmm0, qword[A1 - 0x80]);
        sub(A1, -8);
        movq(xmm1, qword[A2 - 0x80]);
        sub(A2, -8);
        punpckldq(xmm0, xmm1);
        movdqu(xword[B - 0x80], xmm0);
        sub(B, -16);
        align(4);

        L(l9c);
        test(M, 0x4);
        jle(lc8, T_NEAR);
        movd(xmm0, dword[A1 - 0x80]);
        sub(A1, -4);
        movd(xmm1, dword[A2 - 0x80]);
        sub(A2, -4);
        punpckldq(xmm0, xmm1);
        movq(qword[B - 0x80], xmm0);
        sub(B, -8);
        align(4);

        L(lc8);
        test(M, 0x2);
        jle(lf8, T_NEAR);
        mov(ax, word[A1 - 0x80]);
        sub(A1, -2);
        pinsrw(xmm0, eax, 0x0);
        mov(ax, word[A2 - 0x80]);
        sub(A2, -2);
        pinsrw(xmm0, eax, 0x1);
        movd(dword[B - 0x80], xmm0);
        sub(B, -4);
        align(4);

        L(lf8);
        test(M, 0x1);
        jle(l118, T_NEAR);
        mov(al, byte[A1 - 0x80]);
        mov(byte[B - 0x80], al);
        mov(al, byte[A2 - 0x80]);
        mov(byte[B - 0x7f], al);
        sub(B, -2);
        align(4);

        L(l118);
        sub(N, 0x2);
        cmp(N, 0x2);
        jge(l20, T_NEAR);
        align(4);

        L(l126);
        cmp(N, 0x1);
        jl(l1e0, T_NEAR);
        align(4);

        L(l130);
        mov(A1, A);
        add(A, LDA);
        mov(I, M);
        sar(I, 0x4);
        jle(l15c, T_NEAR);
        align(4);

        L(l140);
        movdqu(xmm0, xword[A1 - 0x80]);
        sub(A1, -16);
        movdqu(xword[B - 0x80], xmm0);
        sub(B, -16);
        dec(I);
        jg(l140, T_NEAR);
        align(4);

        L(l15c);
        test(M, 0x8);
        jle(l17c, T_NEAR);
        movq(xmm0, qword[A1 - 0x80]);
        sub(A1, -8);
        movq(qword[B - 0x80], xmm0);
        sub(B, -8);
        align(4);

        L(l17c);
        test(M, 0x4);
        jle(l19c, T_NEAR);
        movd(xmm0, dword[A1 - 0x80]);
        sub(A1, -4);
        movd(dword[B - 0x80], xmm0);
        sub(B, -4);
        align(4);

        L(l19c);
        test(M, 0x2);
        jle(l1b8, T_NEAR);
        mov(ax, word[A1 - 0x80]);
        mov(word[B - 0x80], ax);
        sub(A1, -2);
        sub(B, -2);
        align(4);

        L(l1b8);
        test(M, 0x1);
        jle(l1d0, T_NEAR);
        mov(al, byte[A1 - 0x80]);
        mov(byte[B - 0x80], al);
        sub(B, -1);
        align(4);

        L(l1d0);
        sub(N, 0x1);
        cmp(N, 0x1);
        jge(l130, T_NEAR);
        align(4);

        L(l1e0);
        postamble();
    }
    outLocalLabel();

#undef M
#undef N
#undef A
#undef LDA
#undef ALPHA
#undef B
#undef I
#undef A1
#undef A2
#undef LDA3
#ifdef _WIN32
#undef ARG_ALPHA
#undef ARG_B
#endif
}

} // namespace cpu
} // namespace impl
} // namespace mkldnn
