1 /* 2 * Copyright (C) 2007-2008 ARM Limited 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 * 16 */ 17 /* 18 * 19 */ 20 21 .eabi_attribute 24, 1 22 .eabi_attribute 25, 1 23 24 .arm 25 .fpu neon 26 .text 27 28 .extern armVCM4P10_CAVLCCoeffTokenTables 29 .extern armVCM4P10_SuffixToLevel 30 .extern armVCM4P10_CAVLCTotalZeros2x2Tables 31 .extern armVCM4P10_CAVLCTotalZeroTables 32 .extern armVCM4P10_CAVLCRunBeforeTables 33 .extern armVCM4P10_ZigZag_2x2 34 .extern armVCM4P10_ZigZag_4x4 35 36 .hidden armVCM4P10_CAVLCCoeffTokenTables 37 .hidden armVCM4P10_SuffixToLevel 38 .hidden armVCM4P10_CAVLCTotalZeros2x2Tables 39 .hidden armVCM4P10_CAVLCTotalZeroTables 40 .hidden armVCM4P10_CAVLCRunBeforeTables 41 .hidden armVCM4P10_ZigZag_2x2 42 .hidden armVCM4P10_ZigZag_4x4 43 44 .global armVCM4P10_DecodeCoeffsToPair 45 .func armVCM4P10_DecodeCoeffsToPair 46 armVCM4P10_DecodeCoeffsToPair: 47 PUSH {r4-r12,lr} 48 SUB sp,sp,#0x40 49 LDR r10,[r0,#0] 50 LDR r12,[r1,#0] 51 LDR r6, .LarmVCM4P10_CAVLCCoeffTokenTables 52 P0: ADD r6, pc 53 LDR r4,[sp,#0x68] 54 LDRB r9,[r10,#2] 55 LDRB r8,[r10,#1] 56 LDRB r11,[r10],#3 57 ADD r12,r12,#8 58 LDR r6,[r6,r4,LSL #2] 59 ORR r9,r9,r8,LSL #8 60 ORR r11,r9,r11,LSL #16 61 LSLS r8,r11,r12 62 MOVS r7,#0x1e 63 AND r7,r7,r8,LSR #27 64 SUBS r12,r12,#8 65 L0x44: 66 BCC L1 67 LDRB r8,[r10],#1 68 L1: 69 LDRH r7,[r6,r7] 70 ADDCC r12,r12,#8 71 ADD r12,r12,#4 72 ORRCS r11,r8,r11,LSL #8 73 LSRS r8,r7,#1 74 BCS L0x74 75 LSLS r8,r11,r12 76 SUBS r12,r12,#0xa 77 ADD r7,r7,r8,LSR #29 78 BIC r7,r7,#1 79 B L0x44 80 L0x74: 81 SUB r12,r12,r7,LSR #13 82 BIC r7,r8,#0xf000 83 LSRS r5,r7,#2 84 STRB r5,[r2,#0] 85 BEQ L0x344 86 CMP r7,#0x44 87 BGE L0x33c 88 STR r0,[sp,#0] 89 STR r1,[sp,#4] 90 STR r3,[sp,#8] 91 ANDS r1,r7,#3 92 ADD r2,sp,#0xc 93 BEQ L0xd8 94 MOV r0,r1 95 L0xac: 96 LSLS r7,r11,r12 97 SUBS r12,r12,#7 98 BCC L2 99 LDRB r8,[r10],#1 100 L2: 101 ADDCC r12,r12,#8 102 LSR r7,r7,#31 103 ORRCS r11,r8,r11,LSL #8 104 SUBS r0,r0,#1 105 MOV r8,#1 106 SUB r8,r8,r7,LSL #1 107 STRH r8,[r2],#2 108 BGT L0xac 109 L0xd8: 110 SUBS r0,r5,r1 111 BEQ L0x1b8 112 MOV r4,#1 113 CMP r5,#0xa 114 MOVLE r4,#0 115 CMP r1,#3 116 MOVLT r1,#4 117 MOVGE r1,#2 118 MOVGE r4,#0 119 L0xfc: 120 LSLS r7,r11,r12 121 CLZ r7,r7 122 ADD r12,r12,r7 123 SUBS r12,r12,#7 124 BCC L3 125 LDRB r8,[r10],#1 126 ORR r11,r8,r11,LSL #8 127 SUBS r12,r12,#8 128 BCC L3 129 LDRB r8,[r10],#1 130 L3: 131 ADDCC r12,r12,#8 132 ORRCS r11,r8,r11,LSL #8 133 CMP r7,#0x10 134 BGE L0x33c 135 MOVS lr,r4 136 TEQEQ r7,#0xe 137 MOVEQ lr,#4 138 TEQ r7,#0xf 139 MOVEQ lr,#0xc 140 TEQEQ r4,#0 141 ADDEQ r7,r7,#0xf 142 TEQ lr,#0 143 BEQ L0x184 144 LSL r3,r11,r12 145 ADD r12,r12,lr 146 SUBS r12,r12,#8 147 RSB r9,lr,#0x20 148 BCC L4 149 LDRB r8,[r10],#1 150 ORR r11,r8,r11,LSL #8 151 SUBS r12,r12,#8 152 BCC L4 153 LDRB r8,[r10],#1 154 L4: 155 ADDCC r12,r12,#8 156 LSR r3,r3,r9 157 ORRCS r11,r8,r11,LSL #8 158 LSL r7,r7,r4 159 ADD r7,r3,r7 160 L0x184: 161 ADD r7,r7,r1 162 MOV r1,#2 163 LSRS r8,r7,#1 164 RSBCS r8,r8,#0 165 STRH r8,[r2],#2 166 LDR r9, .LarmVCM4P10_SuffixToLevel 167 P1: ADD r9, pc 168 LDRSB r8,[r9,r4] 169 TEQ r4,#0 170 MOVEQ r4,#1 171 CMP r7,r8 172 ADDCS r4,r4,#1 173 SUBS r0,r0,#1 174 BGT L0xfc 175 L0x1b8: 176 LDR r8,[sp,#0x6c] 177 SUB r0,r5,#1 178 SUBS r1,r8,r5 179 ADD r4,sp,#0x2c 180 MOV lr,r5 181 SUB lr,lr,#1 182 BEQ L0x2b0 183 TEQ r8,#4 184 LDREQ r6, .LarmVCM4P10_CAVLCTotalZeros2x2Tables 185 LDRNE r6, .LarmVCM4P10_CAVLCTotalZeroTables 186 P2: ADD r6, pc 187 LDR r6,[r6,r5,LSL #2] 188 LSLS r8,r11,r12 189 MOVS r7,#0x1e 190 AND r7,r7,r8,LSR #27 191 SUBS r12,r12,#8 192 L0x1f4: 193 BCC L5 194 LDRB r8,[r10],#1 195 L5: 196 LDRH r7,[r6,r7] 197 ADDCC r12,r12,#8 198 ADD r12,r12,#4 199 ORRCS r11,r8,r11,LSL #8 200 LSRS r8,r7,#1 201 BCS L0x224 202 LSLS r8,r11,r12 203 SUBS r12,r12,#0xa 204 ADD r7,r7,r8,LSR #29 205 BIC r7,r7,#1 206 B L0x1f4 207 L0x224: 208 SUB r12,r12,r7,LSR #13 209 BIC r7,r8,#0xf000 210 CMP r7,#0x10 211 BGE L0x33c 212 LDR r3, .LarmVCM4P10_CAVLCRunBeforeTables 213 P3: ADD r3, pc 214 ADD r4,sp,#0x2c 215 MOVS r1,r7 216 ADD lr,lr,r1 217 BEQ L0x2b0 218 L0x248: 219 SUBS r0,r0,#1 220 LDR r6,[r3,r1,LSL #2] 221 BLT L0x2bc 222 LSLS r8,r11,r12 223 MOVS r7,#0xe 224 AND r7,r7,r8,LSR #28 225 SUBS r12,r12,#8 226 L0x264: 227 BCC L6 228 LDRB r8,[r10],#1 229 L6: 230 LDRH r7,[r6,r7] 231 ADDCC r12,r12,#8 232 ADD r12,r12,#3 233 ORRCS r11,r8,r11,LSL #8 234 LSRS r8,r7,#1 235 BCS L0x294 236 LSLS r8,r11,r12 237 SUBS r12,r12,#9 238 ADD r7,r7,r8,LSR #29 239 BIC r7,r7,#1 240 B L0x264 241 L0x294: 242 SUB r12,r12,r7,LSR #13 243 BIC r7,r8,#0xf000 244 CMP r7,#0xf 245 BGE L0x33c 246 SUBS r1,r1,r7 247 STRB r7,[r4],#1 248 BGT L0x248 249 L0x2b0: 250 SUBS r0,r0,#1 251 BLT L7 252 STRB r1,[r4],#1 253 L7: 254 BGT L0x2b0 255 L0x2bc: 256 STRB r1,[r4],#1 257 LDR r8,[sp,#0x6c] 258 TEQ r8,#0xf 259 ADDEQ lr,lr,#1 260 SUB r4,r4,r5 261 SUB r2,r2,r5 262 SUB r2,r2,r5 263 LDR r3,[sp,#8] 264 LDR r0,[r3,#0] 265 TEQ r8,#4 266 LDREQ r6, .LarmVCM4P10_ZigZag_2x2 267 LDRNE r6, .LarmVCM4P10_ZigZag_4x4 268 P4: ADD r6, pc 269 L0x2ec: 270 LDRB r9,[r4],#1 271 LDRB r8,[r6,lr] 272 SUB lr,lr,#1 273 SUB lr,lr,r9 274 LDRSH r9,[r2],#2 275 SUBS r5,r5,#1 276 ORREQ r8,r8,#0x20 277 ADD r1,r9,#0x80 278 CMP r1,#0x100 279 ORRCS r8,r8,#0x10 280 TEQ r5,#0 281 STRB r8,[r0],#1 282 STRB r9,[r0],#1 283 LSR r9,r9,#8 284 BCC L8 285 STRB r9,[r0],#1 286 L8: 287 BNE L0x2ec 288 STR r0,[r3,#0] 289 LDR r0,[sp,#0] 290 LDR r1,[sp,#4] 291 B L0x344 292 L0x33c: 293 MVN r0,#1 294 B L0x35c 295 L0x344: 296 ADD r10,r10,r12,LSR #3 297 AND r12,r12,#7 298 SUB r10,r10,#4 299 STR r12,[r1,#0] 300 STR r10,[r0,#0] 301 MOV r0,#0 302 L0x35c: 303 ADD sp,sp,#0x40 304 POP {r4-r12,pc} 305 .endfunc 306 307 .LarmVCM4P10_CAVLCCoeffTokenTables: 308 .word armVCM4P10_CAVLCCoeffTokenTables-(P0+8) 309 .LarmVCM4P10_SuffixToLevel: 310 .word armVCM4P10_SuffixToLevel-(P1+8) 311 .LarmVCM4P10_CAVLCTotalZeros2x2Tables: 312 .word (armVCM4P10_CAVLCTotalZeros2x2Tables - 4)-(P2+8) 313 .LarmVCM4P10_CAVLCTotalZeroTables: 314 .word (armVCM4P10_CAVLCTotalZeroTables - 4)-(P2+8) 315 .LarmVCM4P10_CAVLCRunBeforeTables: 316 .word (armVCM4P10_CAVLCRunBeforeTables - 4)-(P3+8) 317 .LarmVCM4P10_ZigZag_2x2: 318 .word armVCM4P10_ZigZag_2x2-(P4+8) 319 .LarmVCM4P10_ZigZag_4x4: 320 .word armVCM4P10_ZigZag_4x4-(P4+8) 321 322 .end 323
