1 @/***************************************************************************** 2 @* 3 @* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore 4 @* 5 @* Licensed under the Apache License, Version 2.0 (the "License"); 6 @* you may not use this file except in compliance with the License. 7 @* You may obtain a copy of the License at: 8 @* 9 @* http://www.apache.org/licenses/LICENSE-2.0 10 @* 11 @* Unless required by applicable law or agreed to in writing, software 12 @* distributed under the License is distributed on an "AS IS" BASIS, 13 @* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 @* See the License for the specific language governing permissions and 15 @* limitations under the License. 16 @* 17 @*****************************************************************************/ 18 @/** 19 @ ******************************************************************************* 20 @ * ,:file 21 @ * ihevc_mem_fns_neon.s 22 @ * 23 @ * ,:brief 24 @ * Contains function definitions for memory manipulation 25 @ * 26 @ * ,:author 27 @ * Naveen SR 28 @ * 29 @ * ,:par List of Functions: 30 @ * - ihevc_memcpy() 31 @ * - ihevc_memset_mul_8() 32 @ * - ihevc_memset_16bit_mul_8() 33 @ * 34 @ * ,:remarks 35 @ * None 36 @ * 37 @ ******************************************************************************* 38 @*/ 39 40 @/** 41 @******************************************************************************* 42 @* 43 @* ,:brief 44 @* memcpy of a 1d array 45 @* 46 @* ,:par Description: 47 @* Does memcpy of 8bit data from source to destination for 8,16 or 32 number of bytes 48 @* 49 @* ,:param[in] pu1_dst 50 @* UWORD8 pointer to the destination 51 @* 52 @* ,:param[in] pu1_src 53 @* UWORD8 pointer to the source 54 @* 55 @* ,:param[in] num_bytes 56 @* number of bytes to copy 57 @* ,:returns 58 @* 59 @* ,:remarks 60 @* None 61 @* 62 @******************************************************************************* 63 @*/ 64 @void ihevc_memcpy_mul_8(UWORD8 *pu1_dst, 65 @ UWORD8 *pu1_src, 66 @ UWORD8 num_bytes) 67 @**************Variables Vs Registers************************* 68 @ r0 => *pu1_dst 69 @ r1 => *pu1_src 70 @ r2 => num_bytes 71 72 .text 73 .p2align 2 74 75 76 77 78 .global ihevc_memcpy_mul_8_a9q 79 .type ihevc_memcpy_mul_8_a9q, %function 80 81 ihevc_memcpy_mul_8_a9q: 82 83 LOOP_NEON_MEMCPY_MUL_8: 84 @ Memcpy 8 bytes 85 VLD1.8 d0,[r1]! 86 VST1.8 d0,[r0]! 87 88 SUBS r2,r2,#8 89 BNE LOOP_NEON_MEMCPY_MUL_8 90 MOV PC,LR 91 92 93 94 @******************************************************************************* 95 @*/ 96 @void ihevc_memcpy(UWORD8 *pu1_dst, 97 @ UWORD8 *pu1_src, 98 @ UWORD8 num_bytes) 99 @**************Variables Vs Registers************************* 100 @ r0 => *pu1_dst 101 @ r1 => *pu1_src 102 @ r2 => num_bytes 103 104 105 106 .global ihevc_memcpy_a9q 107 .type ihevc_memcpy_a9q, %function 108 109 ihevc_memcpy_a9q: 110 SUBS r2,#8 111 BLT ARM_MEMCPY 112 LOOP_NEON_MEMCPY: 113 @ Memcpy 8 bytes 114 VLD1.8 d0,[r1]! 115 VST1.8 d0,[r0]! 116 117 SUBS r2,#8 118 BGE LOOP_NEON_MEMCPY 119 CMP r2,#-8 120 BXEQ LR 121 122 ARM_MEMCPY: 123 ADD r2,#8 124 125 LOOP_ARM_MEMCPY: 126 LDRB r3,[r1],#1 127 STRB r3,[r0],#1 128 SUBS r2,#1 129 BNE LOOP_ARM_MEMCPY 130 BX LR 131 132 133 134 135 @void ihevc_memset_mul_8(UWORD8 *pu1_dst, 136 @ UWORD8 value, 137 @ UWORD8 num_bytes) 138 @**************Variables Vs Registers************************* 139 @ r0 => *pu1_dst 140 @ r1 => value 141 @ r2 => num_bytes 142 143 .text 144 .p2align 2 145 146 147 148 .global ihevc_memset_mul_8_a9q 149 .type ihevc_memset_mul_8_a9q, %function 150 151 ihevc_memset_mul_8_a9q: 152 153 @ Assumptions: numbytes is either 8, 16 or 32 154 VDUP.8 d0,r1 155 LOOP_MEMSET_MUL_8: 156 @ Memset 8 bytes 157 VST1.8 d0,[r0]! 158 159 SUBS r2,r2,#8 160 BNE LOOP_MEMSET_MUL_8 161 162 BX LR 163 164 165 166 167 @void ihevc_memset(UWORD8 *pu1_dst, 168 @ UWORD8 value, 169 @ UWORD8 num_bytes) 170 @**************Variables Vs Registers************************* 171 @ r0 => *pu1_dst 172 @ r1 => value 173 @ r2 => num_bytes 174 175 176 177 .global ihevc_memset_a9q 178 .type ihevc_memset_a9q, %function 179 180 ihevc_memset_a9q: 181 SUBS r2,#8 182 BLT ARM_MEMSET 183 VDUP.8 d0,r1 184 LOOP_NEON_MEMSET: 185 @ Memcpy 8 bytes 186 VST1.8 d0,[r0]! 187 188 SUBS r2,#8 189 BGE LOOP_NEON_MEMSET 190 CMP r2,#-8 191 BXEQ LR 192 193 ARM_MEMSET: 194 ADD r2,#8 195 196 LOOP_ARM_MEMSET: 197 STRB r1,[r0],#1 198 SUBS r2,#1 199 BNE LOOP_ARM_MEMSET 200 BX LR 201 202 203 204 205 @void ihevc_memset_16bit_mul_8(UWORD16 *pu2_dst, 206 @ UWORD16 value, 207 @ UWORD8 num_words) 208 @**************Variables Vs Registers************************* 209 @ r0 => *pu2_dst 210 @ r1 => value 211 @ r2 => num_words 212 213 .text 214 .p2align 2 215 216 217 218 .global ihevc_memset_16bit_mul_8_a9q 219 .type ihevc_memset_16bit_mul_8_a9q, %function 220 221 ihevc_memset_16bit_mul_8_a9q: 222 223 @ Assumptions: num_words is either 8, 16 or 32 224 225 @ Memset 8 words 226 VDUP.16 d0,r1 227 LOOP_MEMSET_16BIT_MUL_8: 228 VST1.16 d0,[r0]! 229 VST1.16 d0,[r0]! 230 231 SUBS r2,r2,#8 232 BNE LOOP_MEMSET_16BIT_MUL_8 233 234 BX LR 235 236 237 238 239 @void ihevc_memset_16bit(UWORD16 *pu2_dst, 240 @ UWORD16 value, 241 @ UWORD8 num_words) 242 @**************Variables Vs Registers************************* 243 @ r0 => *pu2_dst 244 @ r1 => value 245 @ r2 => num_words 246 247 248 249 .global ihevc_memset_16bit_a9q 250 .type ihevc_memset_16bit_a9q, %function 251 252 ihevc_memset_16bit_a9q: 253 SUBS r2,#8 254 BLT ARM_MEMSET_16BIT 255 VDUP.16 d0,r1 256 LOOP_NEON_MEMSET_16BIT: 257 @ Memset 8 words 258 VST1.16 d0,[r0]! 259 VST1.16 d0,[r0]! 260 261 SUBS r2,#8 262 BGE LOOP_NEON_MEMSET_16BIT 263 CMP r2,#-8 264 BXEQ LR 265 266 ARM_MEMSET_16BIT: 267 ADD r2,#8 268 269 LOOP_ARM_MEMSET_16BIT: 270 STRH r1,[r0],#2 271 SUBS r2,#1 272 BNE LOOP_ARM_MEMSET_16BIT 273 BX LR 274 275 276 277 278 .section .note.GNU-stack,"",%progbits 279 280
