text: /*
   * Loongson SIMD optimized idctdsp
   *
   * Copyright (c) 2015 Loongson Technology Corporation Limited
   * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
   *
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * FFmpeg is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with FFmpeg; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #include "idctdsp_mips.h"
  #include "constants.h"
  #include "libavutil/mips/mmiutils.h"
  
  void ff_put_pixels_clamped_mmi(const int16_t *block,
          uint8_t *av_restrict pixels, ptrdiff_t line_size)
  {
      double ftmp[8];
      mips_reg addr[1];
      DECLARE_VAR_ALL64;
      DECLARE_VAR_ADDRT;
  
      __asm__ volatile (
          MMI_LDC1(%[ftmp0], %[block], 0x00)
          MMI_LDC1(%[ftmp1], %[block], 0x08)
          MMI_LDC1(%[ftmp2], %[block], 0x10)
          MMI_LDC1(%[ftmp3], %[block], 0x18)
          MMI_LDC1(%[ftmp4], %[block], 0x20)
          MMI_LDC1(%[ftmp5], %[block], 0x28)
          MMI_LDC1(%[ftmp6], %[block], 0x30)
          MMI_LDC1(%[ftmp7], %[block], 0x38)
          PTR_ADDU   "%[addr0],   %[pixels],      %[line_size]            \n\t"
          "packushb   %[ftmp0],   %[ftmp0],       %[ftmp1]                \n\t"
          "packushb   %[ftmp2],   %[ftmp2],       %[ftmp3]                \n\t"
          "packushb   %[ftmp4],   %[ftmp4],       %[ftmp5]                \n\t"
          "packushb   %[ftmp6],   %[ftmp6],       %[ftmp7]                \n\t"
          MMI_SDC1(%[ftmp0], %[pixels], 0x00)
          MMI_SDC1(%[ftmp2], %[addr0], 0x00)
          MMI_SDXC1(%[ftmp4], %[addr0], %[line_size], 0x00)
          MMI_SDXC1(%[ftmp6], %[pixels], %[line_sizex3], 0x00)
          : [ftmp0]"=&f"(ftmp[0]),            [ftmp1]"=&f"(ftmp[1]),
            [ftmp2]"=&f"(ftmp[2]),            [ftmp3]"=&f"(ftmp[3]),
            [ftmp4]"=&f"(ftmp[4]),            [ftmp5]"=&f"(ftmp[5]),
            [ftmp6]"=&f"(ftmp[6]),            [ftmp7]"=&f"(ftmp[7]),
            RESTRICT_ASM_ALL64
            RESTRICT_ASM_ADDRT
            [addr0]"=&r"(addr[0]),
            [pixels]"+&r"(pixels)
          : [line_size]"r"((mips_reg)line_size),
            [line_sizex3]"r"((mips_reg)(line_size*3)),
            [block]"r"(block)
          : "memory"
      );
  
      pixels += line_size*4;
      block += 32;
  
      __asm__ volatile (
          MMI_LDC1(%[ftmp0], %[block], 0x00)
          MMI_LDC1(%[ftmp1], %[block], 0x08)
          MMI_LDC1(%[ftmp2], %[block], 0x10)
          MMI_LDC1(%[ftmp3], %[block], 0x18)
          MMI_LDC1(%[ftmp4], %[block], 0x20)
          MMI_LDC1(%[ftmp5], %[block], 0x28)
          MMI_LDC1(%[ftmp6], %[block], 0x30)
          MMI_LDC1(%[ftmp7], %[block], 0x38)
          PTR_ADDU   "%[addr0],   %[pixels],      %[line_size]            \n\t"
          "packushb   %[ftmp0],   %[ftmp0],       %[ftmp1]                \n\t"
          "packushb   %[ftmp2],   %[ftmp2],       %[ftmp3]                \n\t"
          "packushb   %[ftmp4],   %[ftmp4],       %[ftmp5]                \n\t"
          "packushb   %[ftmp6],   %[ftmp6],       %[ftmp7]                \n\t"
          MMI_SDC1(%[ftmp0], %[pixels], 0x00)
          MMI_SDC1(%[ftmp2], %[addr0], 0x00)
          MMI_SDXC1(%[ftmp4], %[addr0], %[line_size], 0x00)
          MMI_SDXC1(%[ftmp6], %[pixels], %[line_sizex3], 0x00)
          : [ftmp0]"=&f"(ftmp[0]),            [ftmp1]"=&f"(ftmp[1]),
            [ftmp2]"=&f"(ftmp[2]),            [ftmp3]"=&f"(ftmp[3]),
            [ftmp4]"=&f"(ftmp[4]),            [ftmp5]"=&f"(ftmp[5]),
            [ftmp6]"=&f"(ftmp[6]),            [ftmp7]"=&f"(ftmp[7]),
            RESTRICT_ASM_ALL64
            RESTRICT_ASM_ADDRT
            [addr0]"=&r"(addr[0]),
            [pixels]"+&r"(pixels)
          : [line_size]"r"((mips_reg)line_size),
            [line_sizex3]"r"((mips_reg)(line_size*3)),
            [block]"r"(block)
          : "memory"
      );
  }
  
  void ff_put_signed_pixels_clamped_mmi(const int16_t *block,
      uint8_t *av_restrict pixels, ptrdiff_t line_size)
  {
      int64_t line_skip = line_size;
      int64_t line_skip3 = 0;
      double ftmp[5];
      mips_reg addr[1];
      DECLARE_VAR_ALL64;
      DECLARE_VAR_ADDRT;
  
      __asm__ volatile (
          PTR_ADDU   "%[line_skip3],  %[line_skip],   %[line_skip]        \n\t"
          MMI_LDC1(%[ftmp1], %[block], 0x00)
          MMI_LDC1(%[ftmp0], %[block], 0x08)
          "packsshb   %[ftmp1],       %[ftmp1],       %[ftmp0]            \n\t"
          MMI_LDC1(%[ftmp2], %[block], 0x10)
          MMI_LDC1(%[ftmp0], %[block], 0x18)
          "packsshb   %[ftmp2],       %[ftmp2],       %[ftmp0]            \n\t"
          MMI_LDC1(%[ftmp3], %[block], 0x20)
          MMI_LDC1(%[ftmp0], %[block], 0x28)
          "packsshb   %[ftmp3],       %[ftmp3],       %[ftmp0]            \n\t"
          MMI_LDC1(%[ftmp4], %[block], 0x30)
          MMI_LDC1(%[ftmp0], %[block], 0x38)
          "packsshb   %[ftmp4],       %[ftmp4],       %[ftmp0]            \n\t"
          "paddb      %[ftmp1],       %[ftmp1],       %[ff_pb_80]         \n\t"
          "paddb      %[ftmp2],       %[ftmp2],       %[ff_pb_80]         \n\t"
          "paddb      %[ftmp3],       %[ftmp3],       %[ff_pb_80]         \n\t"
          "paddb      %[ftmp4],       %[ftmp4],       %[ff_pb_80]         \n\t"
          MMI_SDC1(%[ftmp1], %[pixels], 0x00)
          MMI_SDXC1(%[ftmp2], %[pixels], %[line_skip], 0x00)
          MMI_SDXC1(%[ftmp3], %[pixels], %[line_skip3], 0x00)
          PTR_ADDU   "%[line_skip3],  %[line_skip3],  %[line_skip]        \n\t"
          MMI_SDXC1(%[ftmp4], %[pixels], %[line_skip3], 0x00)
          PTR_ADDU   "%[addr0],       %[line_skip3],  %[line_skip]        \n\t"
          PTR_ADDU   "%[pixels],      %[pixels],      %[addr0]            \n\t"
          MMI_LDC1(%[ftmp1], %[block], 0x40)
          MMI_LDC1(%[ftmp0], %[block], 0x48)
          "packsshb   %[ftmp1],       %[ftmp1],       %[ftmp0]            \n\t"
          MMI_LDC1(%[ftmp2], %[block], 0x50)
          MMI_LDC1(%[ftmp0], %[block], 0x58)
          "packsshb   %[ftmp2],       %[ftmp2],       %[ftmp0]            \n\t"
          MMI_LDC1(%[ftmp3], %[block], 0x60)
          MMI_LDC1(%[ftmp0], %[block], 0x68)
          "packsshb   %[ftmp3],       %[ftmp3],       %[ftmp0]            \n\t"
          MMI_LDC1(%[ftmp4], %[block], 0x70)
          MMI_LDC1(%[ftmp0], %[block], 0x78)
          "packsshb   %[ftmp4],       %[ftmp4],       %[ftmp0]            \n\t"
          "paddb      %[ftmp1],       %[ftmp1],       %[ff_pb_80]         \n\t"
          "paddb      %[ftmp2],       %[ftmp2],       %[ff_pb_80]         \n\t"
          "paddb      %[ftmp3],       %[ftmp3],       %[ff_pb_80]         \n\t"
          "paddb      %[ftmp4],       %[ftmp4],       %[ff_pb_80]         \n\t"
          MMI_SDC1(%[ftmp1], %[pixels], 0x00)
          MMI_SDXC1(%[ftmp2], %[pixels], %[line_skip], 0x00)
          PTR_ADDU   "%[addr0],       %[line_skip],   %[line_skip]        \n\t"
          MMI_SDXC1(%[ftmp3], %[pixels], %[addr0], 0x00)
          MMI_SDXC1(%[ftmp4], %[pixels], %[line_skip3], 0x00)
          : [ftmp0]"=&f"(ftmp[0]),            [ftmp1]"=&f"(ftmp[1]),
            [ftmp2]"=&f"(ftmp[2]),            [ftmp3]"=&f"(ftmp[3]),
            [ftmp4]"=&f"(ftmp[4]),
            RESTRICT_ASM_ALL64
            RESTRICT_ASM_ADDRT
            [addr0]"=&r"(addr[0]),
            [pixels]"+&r"(pixels),            [line_skip3]"+&r"(line_skip3)
          : [block]"r"(block),
            [line_skip]"r"((mips_reg)line_skip),
            [ff_pb_80]"f"(ff_pb_80)
          : "memory"
      );
  }
  
  void ff_add_pixels_clamped_mmi(const int16_t *block,
          uint8_t *av_restrict pixels, ptrdiff_t line_size)
  {
      double ftmp[8];
      uint64_t tmp[1];
      mips_reg addr[1];
      DECLARE_VAR_ALL64;
      DECLARE_VAR_ADDRT;
  
      __asm__ volatile (
          "li         %[tmp0],    0x04                                    \n\t"
          "xor        %[ftmp0],   %[ftmp0],       %[ftmp0]                \n\t"
          "1:                                                             \n\t"
          MMI_LDC1(%[ftmp1], %[block], 0x00)
          MMI_LDC1(%[ftmp2], %[block], 0x08)
          MMI_LDC1(%[ftmp3], %[block], 0x10)
          MMI_LDC1(%[ftmp4], %[block], 0x18)
          MMI_LDC1(%[ftmp5], %[pixels], 0x00)
          MMI_LDXC1(%[ftmp6], %[pixels], %[line_size], 0x00)
          "mov.d      %[ftmp7],   %[ftmp5]                                \n\t"
          "punpcklbh  %[ftmp5],   %[ftmp5],       %[ftmp0]                \n\t"
          "punpckhbh  %[ftmp7],   %[ftmp7],       %[ftmp0]                \n\t"
          "paddh      %[ftmp1],   %[ftmp1],       %[ftmp5]                \n\t"
          "paddh      %[ftmp2],   %[ftmp2],       %[ftmp7]                \n\t"
          "mov.d      %[ftmp7],   %[ftmp6]                                \n\t"
          "punpcklbh  %[ftmp6],   %[ftmp6],       %[ftmp0]                \n\t"
          "punpckhbh  %[ftmp7],   %[ftmp7],       %[ftmp0]                \n\t"
          "paddh      %[ftmp3],   %[ftmp3],       %[ftmp6]                \n\t"
          "paddh      %[ftmp4],   %[ftmp4],       %[ftmp7]                \n\t"
          "packushb   %[ftmp1],   %[ftmp1],       %[ftmp2]                \n\t"
          "packushb   %[ftmp3],   %[ftmp3],       %[ftmp4]                \n\t"
          MMI_SDC1(%[ftmp1], %[pixels], 0x00)
          MMI_SDXC1(%[ftmp3], %[pixels], %[line_size], 0x00)
          "addi       %[tmp0],    %[tmp0],        -0x01                   \n\t"
          PTR_ADDIU  "%[block],   %[block],       0x20                    \n\t"
          PTR_ADDU   "%[pixels],  %[pixels],      %[line_size]            \n\t"
          PTR_ADDU   "%[pixels],  %[pixels],      %[line_size]            \n\t"
          "bnez       %[tmp0],    1b"
          : [ftmp0]"=&f"(ftmp[0]),            [ftmp1]"=&f"(ftmp[1]),
            [ftmp2]"=&f"(ftmp[2]),            [ftmp3]"=&f"(ftmp[3]),
            [ftmp4]"=&f"(ftmp[4]),            [ftmp5]"=&f"(ftmp[5]),
            [ftmp6]"=&f"(ftmp[6]),            [ftmp7]"=&f"(ftmp[7]),
            [tmp0]"=&r"(tmp[0]),
            RESTRICT_ASM_ALL64
            RESTRICT_ASM_ADDRT
            [addr0]"=&r"(addr[0]),
            [pixels]"+&r"(pixels),            [block]"+&r"(block)
          : [line_size]"r"((mips_reg)line_size)
          : "memory"
      );
  }
  