1@ This file was created from a .asm file 2@ using the ads2gas.pl script. 3 .syntax unified 4@ 5@ Copyright (c) 2013 The WebM project authors. All Rights Reserved. 6@ 7@ Use of this source code is governed by a BSD-style license and patent 8@ grant that can be found in the LICENSE file in the root of the source 9@ tree. All contributing project authors may be found in the AUTHORS 10@ file in the root of the source tree. 11@ 12 13 14 .global vpx_idct4x4_1_add_neon 15 .type vpx_idct4x4_1_add_neon, function 16 .arm 17 .eabi_attribute 24, 1 @Tag_ABI_align_needed 18 .eabi_attribute 25, 1 @Tag_ABI_align_preserved 19 20.text 21.p2align 2 22 23@void vpx_idct4x4_1_add_neon(int16_t *input, uint8_t *dest, int stride) 24@ 25@ r0 int16_t input 26@ r1 uint8_t *dest 27@ r2 int stride) 28 29_vpx_idct4x4_1_add_neon: 30 vpx_idct4x4_1_add_neon: @ PROC 31 ldrsh r0, [r0] 32 33 @ cospi_16_64 = 11585 34 movw r12, #0x2d41 35 36 @ out = dct_const_round_shift(input[0] * cospi_16_64) 37 mul r0, r0, r12 @ input[0] * cospi_16_64 38 add r0, r0, #0x2000 @ +(1 << ((DCT_CONST_BITS) - 1)) 39 asr r0, r0, #14 @ >> DCT_CONST_BITS 40 41 @ out = dct_const_round_shift(out * cospi_16_64) 42 mul r0, r0, r12 @ out * cospi_16_64 43 mov r12, r1 @ save dest 44 add r0, r0, #0x2000 @ +(1 << ((DCT_CONST_BITS) - 1)) 45 asr r0, r0, #14 @ >> DCT_CONST_BITS 46 47 @ a1 = ROUND_POWER_OF_TWO(out, 4) 48 add r0, r0, #8 @ + (1 <<((4) - 1)) 49 asr r0, r0, #4 @ >> 4 50 51 vdup.s16 q0, r0 @ duplicate a1 52 53 vld1.32 {d2[0]}, [r1], r2 54 vld1.32 {d2[1]}, [r1], r2 55 vld1.32 {d4[0]}, [r1], r2 56 vld1.32 {d4[1]}, [r1] 57 58 vaddw.u8 q8, q0, d2 @ dest[x] + a1 59 vaddw.u8 q9, q0, d4 60 61 vqmovun.s16 d6, q8 @ clip_pixel 62 vqmovun.s16 d7, q9 63 64 vst1.32 {d6[0]}, [r12], r2 65 vst1.32 {d6[1]}, [r12], r2 66 vst1.32 {d7[0]}, [r12], r2 67 vst1.32 {d7[1]}, [r12] 68 69 bx lr 70 .size vpx_idct4x4_1_add_neon, .-vpx_idct4x4_1_add_neon @ ENDP @ |vpx_idct4x4_1_add_neon| 71 72 .section .note.GNU-stack,"",%progbits 73