| @/* |
| @ ** Copyright 2003-2010, VisualOn, Inc. |
| @ ** |
| @ ** Licensed under the Apache License, Version 2.0 (the "License"); |
| @ ** you may not use this file except in compliance with the License. |
| @ ** You may obtain a copy of the License at |
| @ ** |
| @ ** http://www.apache.org/licenses/LICENSE-2.0 |
| @ ** |
| @ ** Unless required by applicable law or agreed to in writing, software |
| @ ** distributed under the License is distributed on an "AS IS" BASIS, |
| @ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| @ ** See the License for the specific language governing permissions and |
| @ ** limitations under the License. |
| @ */ |
| |
| @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| @ File: PrePostMDCT_v5.s |
| @ |
| @ Content: premdct and postmdct function armv5 assemble |
| @ |
| @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| |
| .section .text |
| .global PreMDCT |
| |
| PreMDCT: |
| stmdb sp!, {r4 - r11, lr} |
| |
| add r9, r0, r1, lsl #2 |
| sub r3, r9, #8 |
| |
| movs r1, r1, asr #2 |
| beq PreMDCT_END |
| |
| PreMDCT_LOOP: |
| ldr r8, [r2], #4 |
| ldr r9, [r2], #4 |
| |
| ldrd r4, [r0] |
| ldrd r6, [r3] |
| |
| smull r14, r11, r4, r8 @ MULHIGH(tr1, cosa) |
| smull r10, r12, r7, r8 @ MULHIGH(ti1, cosa) |
| |
| smull r14, r8, r7, r9 @ MULHIGH(ti1, sina) |
| smull r7, r10, r4, r9 @ MULHIGH(tr1, sina) |
| |
| add r11, r11, r8 @ MULHIGH(cosa, tr1) + MULHIGH(sina, ti1)@ |
| sub r7, r12, r10 @ MULHIGH(ti1, cosa) - MULHIGH(tr1, sina) |
| |
| ldr r8, [r2], #4 |
| ldr r9, [r2], #4 |
| |
| smull r14, r4, r6, r8 @ MULHIGH(tr2, cosa) |
| smull r10, r12, r5, r8 @ MULHIGH(ti2, cosa) |
| |
| smull r14, r8, r5, r9 @ MULHIGH(ti2, sina) |
| smull r5, r10, r6, r9 @ MULHIGH(tr2, sina) |
| |
| add r8, r8, r4 |
| sub r9, r12, r10 |
| |
| mov r6, r11 |
| |
| strd r6, [r0] |
| strd r8, [r3] |
| |
| subs r1, r1, #1 |
| sub r3, r3, #8 |
| add r0, r0, #8 |
| bne PreMDCT_LOOP |
| |
| PreMDCT_END: |
| ldmia sp!, {r4 - r11, pc} |
| @ENDP @ |PreMDCT| |
| |
| .section .text |
| .global PostMDCT |
| |
| PostMDCT: |
| stmdb sp!, {r4 - r11, lr} |
| |
| add r9, r0, r1, lsl #2 |
| sub r3, r9, #8 |
| |
| movs r1, r1, asr #2 |
| beq PostMDCT_END |
| |
| PostMDCT_LOOP: |
| ldr r8, [r2], #4 |
| ldr r9, [r2], #4 |
| |
| ldrd r4, [r0] |
| ldrd r6, [r3] |
| |
| smull r14, r11, r4, r8 @ MULHIGH(tr1, cosa) |
| smull r10, r12, r5, r8 @ MULHIGH(ti1, cosa) |
| |
| smull r14, r8, r5, r9 @ MULHIGH(ti1, sina) |
| smull r5, r10, r4, r9 @ MULHIGH(tr1, sina) |
| |
| add r4, r11, r8 @ MULHIGH(cosa, tr1) + MULHIGH(sina, ti1)@ |
| sub r11, r10, r12 @ MULHIGH(ti1, cosa) - MULHIGH(tr1, sina)@ |
| |
| ldr r8, [r2], #4 @ |
| ldr r9, [r2], #4 |
| |
| smull r14, r5, r6, r8 @ MULHIGH(tr2, cosa) |
| smull r10, r12, r7, r8 @ MULHIGH(ti2, cosa) |
| |
| smull r14, r8, r7, r9 @ MULHIGH(ti2, sina) |
| smull r7, r10, r6, r9 @ MULHIGH(tr2, sina) |
| |
| add r6, r8, r5 @ MULHIGH(cosb, tr2) + MULHIGH(sinb, ti2)@ |
| sub r5, r10, r12 @ MULHIGH(sinb, tr2) - MULHIGH(cosb, ti2)@ |
| |
| mov r7, r11 |
| |
| strd r4, [r0] |
| strd r6, [r3] |
| |
| subs r1, r1, #1 |
| sub r3, r3, #8 |
| add r0, r0, #8 |
| bne PostMDCT_LOOP |
| |
| PostMDCT_END: |
| ldmia sp!, {r4 - r11, pc} |
| @ENDP @ |PostMDCT| |
| .end |
