The Tor Browser: media/libvpx/vp8/encoder/x86/fwalsh

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

1 ;

     2 ;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.

3 ;

     4 ;  Use of this source code is governed by a BSD-style license

     5 ;  that can be found in the LICENSE file in the root of the source

     6 ;  tree. An additional intellectual property rights grant can be found

     7 ;  in the file PATENTS.  All contributing project authors may

     8 ;  be found in the AUTHORS file in the root of the source tree.

9 ;

    12 %include "vpx_ports/x86_abi_support.asm"

    14 ;void vp8_short_walsh4x4_sse2(short *input, short *output, int pitch)

    15 global sym(vp8_short_walsh4x4_sse2) PRIVATE

    16 sym(vp8_short_walsh4x4_sse2):

    17     push        rbp

    18     mov         rbp, rsp

    19     SHADOW_ARGS_TO_STACK 3

    20     SAVE_XMM 7

    21     GET_GOT     rbx

    22     push        rsi

    23     push        rdi

    24     ; end prolog

    26     mov     rsi, arg(0)           ; input

    27     mov     rdi, arg(1)           ; output

    28     movsxd  rdx, dword ptr arg(2) ; pitch

    30     ; first for loop

    31     movq    xmm0, MMWORD PTR [rsi]           ; load input

    32     movq    xmm1, MMWORD PTR [rsi + rdx]

    33     lea     rsi,  [rsi + rdx*2]

    34     movq    xmm2, MMWORD PTR [rsi]

    35     movq    xmm3, MMWORD PTR [rsi + rdx]

    37     punpcklwd xmm0,  xmm1

    38     punpcklwd xmm2,  xmm3

    40     movdqa    xmm1, xmm0

    41     punpckldq xmm0, xmm2           ; ip[1] ip[0]

    42     punpckhdq xmm1, xmm2           ; ip[3] ip[2]

    44     movdqa    xmm2, xmm0

    45     paddw     xmm0, xmm1

    46     psubw     xmm2, xmm1

    48     psllw     xmm0, 2              ; d1  a1

    49     psllw     xmm2, 2              ; c1  b1

    51     movdqa    xmm1, xmm0

    52     punpcklqdq xmm0, xmm2          ; b1  a1

    53     punpckhqdq xmm1, xmm2          ; c1  d1

    55     pxor      xmm6, xmm6

    56     movq      xmm6, xmm0

    57     pxor      xmm7, xmm7

    58     pcmpeqw   xmm7, xmm6

    59     paddw     xmm7, [GLOBAL(c1)]

    61     movdqa    xmm2, xmm0

    62     paddw     xmm0, xmm1           ; b1+c1  a1+d1

    63     psubw     xmm2, xmm1           ; b1-c1  a1-d1

    64     paddw     xmm0, xmm7           ; b1+c1  a1+d1+(a1!=0)

    66     ; second for loop

    67     ; input: 13  9  5  1 12  8  4  0 (xmm0)

    68     ;        14 10  6  2 15 11  7  3 (xmm2)

    69     ; after shuffle:

    70     ;        13  5  9  1 12  4  8  0 (xmm0)

    71     ;        14  6 10  2 15  7 11  3 (xmm1)

    72     pshuflw   xmm3, xmm0, 0xd8

    73     pshufhw   xmm0, xmm3, 0xd8

    74     pshuflw   xmm3, xmm2, 0xd8

    75     pshufhw   xmm1, xmm3, 0xd8

    77     movdqa    xmm2, xmm0

    78     pmaddwd   xmm0, [GLOBAL(c1)]    ; d11 a11 d10 a10

    79     pmaddwd   xmm2, [GLOBAL(cn1)]   ; c11 b11 c10 b10

    80     movdqa    xmm3, xmm1

    81     pmaddwd   xmm1, [GLOBAL(c1)]    ; d12 a12 d13 a13

    82     pmaddwd   xmm3, [GLOBAL(cn1)]   ; c12 b12 c13 b13

    84     pshufd    xmm4, xmm0, 0xd8      ; d11 d10 a11 a10

    85     pshufd    xmm5, xmm2, 0xd8      ; c11 c10 b11 b10

    86     pshufd    xmm6, xmm1, 0x72      ; d13 d12 a13 a12

    87     pshufd    xmm7, xmm3, 0x72      ; c13 c12 b13 b12

    89     movdqa    xmm0, xmm4

    90     punpcklqdq xmm0, xmm5           ; b11 b10 a11 a10

    91     punpckhqdq xmm4, xmm5           ; c11 c10 d11 d10

    92     movdqa    xmm1, xmm6

    93     punpcklqdq xmm1, xmm7           ; b13 b12 a13 a12

    94     punpckhqdq xmm6, xmm7           ; c13 c12 d13 d12

    96     movdqa    xmm2, xmm0

    97     paddd     xmm0, xmm4            ; b21 b20 a21 a20

    98     psubd     xmm2, xmm4            ; c21 c20 d21 d20

    99     movdqa    xmm3, xmm1

   100     paddd     xmm1, xmm6            ; b23 b22 a23 a22

   101     psubd     xmm3, xmm6            ; c23 c22 d23 d22

   103     pxor      xmm4, xmm4

   104     movdqa    xmm5, xmm4

   105     pcmpgtd   xmm4, xmm0

   106     pcmpgtd   xmm5, xmm2

   107     pand      xmm4, [GLOBAL(cd1)]

   108     pand      xmm5, [GLOBAL(cd1)]

   110     pxor      xmm6, xmm6

   111     movdqa    xmm7, xmm6

   112     pcmpgtd   xmm6, xmm1

   113     pcmpgtd   xmm7, xmm3

   114     pand      xmm6, [GLOBAL(cd1)]

   115     pand      xmm7, [GLOBAL(cd1)]

   117     paddd     xmm0, xmm4

   118     paddd     xmm2, xmm5

   119     paddd     xmm0, [GLOBAL(cd3)]

   120     paddd     xmm2, [GLOBAL(cd3)]

   121     paddd     xmm1, xmm6

   122     paddd     xmm3, xmm7

   123     paddd     xmm1, [GLOBAL(cd3)]

   124     paddd     xmm3, [GLOBAL(cd3)]

   126     psrad     xmm0, 3

   127     psrad     xmm1, 3

   128     psrad     xmm2, 3

   129     psrad     xmm3, 3

   130     movdqa    xmm4, xmm0

   131     punpcklqdq xmm0, xmm1           ; a23 a22 a21 a20

   132     punpckhqdq xmm4, xmm1           ; b23 b22 b21 b20

   133     movdqa    xmm5, xmm2

   134     punpckhqdq xmm2, xmm3           ; c23 c22 c21 c20

   135     punpcklqdq xmm5, xmm3           ; d23 d22 d21 d20

   137     packssdw  xmm0, xmm4            ; b23 b22 b21 b20 a23 a22 a21 a20

   138     packssdw  xmm2, xmm5            ; d23 d22 d21 d20 c23 c22 c21 c20

   140     movdqa  XMMWORD PTR [rdi], xmm0

   141     movdqa  XMMWORD PTR [rdi + 16], xmm2

   143     ; begin epilog

   144     pop rdi

   145     pop rsi

   146     RESTORE_GOT

   147     RESTORE_XMM

   148     UNSHADOW_ARGS

   149     pop         rbp

   150     ret

   152 SECTION_RODATA

   153 align 16

   154 c1:

   155     dw 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001

   156 align 16

   157 cn1:

   158     dw 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff

   159 align 16

   160 cd1:

   161     dd 0x00000001, 0x00000001, 0x00000001, 0x00000001

   162 align 16

   163 cd3:

   164     dd 0x00000003, 0x00000003, 0x00000003, 0x00000003

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