| ; |
| ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| ; |
| ; Use of this source code is governed by a BSD-style license |
| ; that can be found in the LICENSE file in the root of the source |
| ; tree. An additional intellectual property rights grant can be found |
| ; in the file PATENTS. All contributing project authors may |
| ; be found in the AUTHORS file in the root of the source tree. |
| ; |
| |
| |
| %include "vpx_ports/x86_abi_support.asm" |
| |
| ;void vp8_short_fdct4x4_mmx(short *input, short *output, int pitch) |
| global sym(vp8_short_fdct4x4_mmx) |
| sym(vp8_short_fdct4x4_mmx): |
| push rbp |
| mov rbp, rsp |
| SHADOW_ARGS_TO_STACK 3 |
| GET_GOT rbx |
| push rsi |
| push rdi |
| ; end prolog |
| |
| mov rsi, arg(0) ; input |
| mov rdi, arg(1) ; output |
| |
| movsxd rax, dword ptr arg(2) ;pitch |
| |
| lea rcx, [rsi + rax*2] |
| ; read the input data |
| movq mm0, [rsi] |
| movq mm1, [rsi + rax] |
| |
| movq mm2, [rcx] |
| movq mm4, [rcx + rax] |
| |
| ; transpose for the first stage |
| movq mm3, mm0 ; 00 01 02 03 |
| movq mm5, mm2 ; 20 21 22 23 |
| |
| punpcklwd mm0, mm1 ; 00 10 01 11 |
| punpckhwd mm3, mm1 ; 02 12 03 13 |
| |
| punpcklwd mm2, mm4 ; 20 30 21 31 |
| punpckhwd mm5, mm4 ; 22 32 23 33 |
| |
| movq mm1, mm0 ; 00 10 01 11 |
| punpckldq mm0, mm2 ; 00 10 20 30 |
| |
| punpckhdq mm1, mm2 ; 01 11 21 31 |
| |
| movq mm2, mm3 ; 02 12 03 13 |
| punpckldq mm2, mm5 ; 02 12 22 32 |
| |
| punpckhdq mm3, mm5 ; 03 13 23 33 |
| |
| ; mm0 0 |
| ; mm1 1 |
| ; mm2 2 |
| ; mm3 3 |
| |
| ; first stage |
| movq mm5, mm0 |
| movq mm4, mm1 |
| |
| paddw mm0, mm3 ; a1 = 0 + 3 |
| paddw mm1, mm2 ; b1 = 1 + 2 |
| |
| psubw mm4, mm2 ; c1 = 1 - 2 |
| psubw mm5, mm3 ; d1 = 0 - 3 |
| |
| psllw mm5, 3 |
| psllw mm4, 3 |
| |
| psllw mm0, 3 |
| psllw mm1, 3 |
| |
| ; output 0 and 2 |
| movq mm2, mm0 ; a1 |
| |
| paddw mm0, mm1 ; op[0] = a1 + b1 |
| psubw mm2, mm1 ; op[2] = a1 - b1 |
| |
| ; output 1 and 3 |
| ; interleave c1, d1 |
| movq mm1, mm5 ; d1 |
| punpcklwd mm1, mm4 ; c1 d1 |
| punpckhwd mm5, mm4 ; c1 d1 |
| |
| movq mm3, mm1 |
| movq mm4, mm5 |
| |
| pmaddwd mm1, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352 |
| pmaddwd mm4, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352 |
| |
| pmaddwd mm3, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352 |
| pmaddwd mm5, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352 |
| |
| paddd mm1, MMWORD PTR[GLOBAL(_14500)] |
| paddd mm4, MMWORD PTR[GLOBAL(_14500)] |
| paddd mm3, MMWORD PTR[GLOBAL(_7500)] |
| paddd mm5, MMWORD PTR[GLOBAL(_7500)] |
| |
| psrad mm1, 12 ; (c1 * 2217 + d1 * 5352 + 14500)>>12 |
| psrad mm4, 12 ; (c1 * 2217 + d1 * 5352 + 14500)>>12 |
| psrad mm3, 12 ; (d1 * 2217 - c1 * 5352 + 7500)>>12 |
| psrad mm5, 12 ; (d1 * 2217 - c1 * 5352 + 7500)>>12 |
| |
| packssdw mm1, mm4 ; op[1] |
| packssdw mm3, mm5 ; op[3] |
| |
| ; done with vertical |
| ; transpose for the second stage |
| movq mm4, mm0 ; 00 10 20 30 |
| movq mm5, mm2 ; 02 12 22 32 |
| |
| punpcklwd mm0, mm1 ; 00 01 10 11 |
| punpckhwd mm4, mm1 ; 20 21 30 31 |
| |
| punpcklwd mm2, mm3 ; 02 03 12 13 |
| punpckhwd mm5, mm3 ; 22 23 32 33 |
| |
| movq mm1, mm0 ; 00 01 10 11 |
| punpckldq mm0, mm2 ; 00 01 02 03 |
| |
| punpckhdq mm1, mm2 ; 01 22 12 13 |
| |
| movq mm2, mm4 ; 20 31 30 31 |
| punpckldq mm2, mm5 ; 20 21 22 23 |
| |
| punpckhdq mm4, mm5 ; 30 31 32 33 |
| |
| ; mm0 0 |
| ; mm1 1 |
| ; mm2 2 |
| ; mm3 4 |
| |
| movq mm5, mm0 |
| movq mm3, mm1 |
| |
| paddw mm0, mm4 ; a1 = 0 + 3 |
| paddw mm1, mm2 ; b1 = 1 + 2 |
| |
| psubw mm3, mm2 ; c1 = 1 - 2 |
| psubw mm5, mm4 ; d1 = 0 - 3 |
| |
| pxor mm6, mm6 ; zero out for compare |
| |
| pcmpeqw mm6, mm5 ; d1 != 0 |
| |
| pandn mm6, MMWORD PTR[GLOBAL(_cmp_mask)] ; clear upper, |
| ; and keep bit 0 of lower |
| |
| ; output 0 and 2 |
| movq mm2, mm0 ; a1 |
| |
| paddw mm0, mm1 ; a1 + b1 |
| psubw mm2, mm1 ; a1 - b1 |
| |
| paddw mm0, MMWORD PTR[GLOBAL(_7w)] |
| paddw mm2, MMWORD PTR[GLOBAL(_7w)] |
| |
| psraw mm0, 4 ; op[0] = (a1 + b1 + 7)>>4 |
| psraw mm2, 4 ; op[8] = (a1 - b1 + 7)>>4 |
| |
| movq MMWORD PTR[rdi + 0 ], mm0 |
| movq MMWORD PTR[rdi + 16], mm2 |
| |
| ; output 1 and 3 |
| ; interleave c1, d1 |
| movq mm1, mm5 ; d1 |
| punpcklwd mm1, mm3 ; c1 d1 |
| punpckhwd mm5, mm3 ; c1 d1 |
| |
| movq mm3, mm1 |
| movq mm4, mm5 |
| |
| pmaddwd mm1, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352 |
| pmaddwd mm4, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352 |
| |
| pmaddwd mm3, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352 |
| pmaddwd mm5, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352 |
| |
| paddd mm1, MMWORD PTR[GLOBAL(_12000)] |
| paddd mm4, MMWORD PTR[GLOBAL(_12000)] |
| paddd mm3, MMWORD PTR[GLOBAL(_51000)] |
| paddd mm5, MMWORD PTR[GLOBAL(_51000)] |
| |
| psrad mm1, 16 ; (c1 * 2217 + d1 * 5352 + 14500)>>16 |
| psrad mm4, 16 ; (c1 * 2217 + d1 * 5352 + 14500)>>16 |
| psrad mm3, 16 ; (d1 * 2217 - c1 * 5352 + 7500)>>16 |
| psrad mm5, 16 ; (d1 * 2217 - c1 * 5352 + 7500)>>16 |
| |
| packssdw mm1, mm4 ; op[4] |
| packssdw mm3, mm5 ; op[12] |
| |
| paddw mm1, mm6 ; op[4] += (d1!=0) |
| |
| movq MMWORD PTR[rdi + 8 ], mm1 |
| movq MMWORD PTR[rdi + 24], mm3 |
| |
| ; begin epilog |
| pop rdi |
| pop rsi |
| RESTORE_GOT |
| UNSHADOW_ARGS |
| pop rbp |
| ret |
| |
| SECTION_RODATA |
| align 8 |
| _5352_2217: |
| dw 5352 |
| dw 2217 |
| dw 5352 |
| dw 2217 |
| align 8 |
| _2217_neg5352: |
| dw 2217 |
| dw -5352 |
| dw 2217 |
| dw -5352 |
| align 8 |
| _cmp_mask: |
| times 4 dw 1 |
| align 8 |
| _7w: |
| times 4 dw 7 |
| align 8 |
| _14500: |
| times 2 dd 14500 |
| align 8 |
| _7500: |
| times 2 dd 7500 |
| align 8 |
| _12000: |
| times 2 dd 12000 |
| align 8 |
| _51000: |
| times 2 dd 51000 |
