@/* | |
@ ** 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. | |
@ */ | |
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@ File: PrePostMDCT_v7.s | |
@ | |
@ Content: premdct and postmdct function armv7 assemble | |
@ | |
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.section .text | |
.global PreMDCT | |
PreMDCT: | |
stmdb sp!, {r4 - r11, lr} | |
add r9, r0, r1, lsl #2 | |
sub r3, r9, #32 | |
movs r1, r1, asr #2 | |
beq PreMDCT_END | |
PreMDCT_LOOP: | |
VLD4.I32 {d0, d2, d4, d6}, [r2]! @ cosa = *csptr++@ sina = *csptr++@ | |
VLD4.I32 {d1, d3, d5, d7}, [r2]! @ cosb = *csptr++@ sinb = *csptr++@ | |
VLD2.I32 {d8, d9, d10, d11}, [r0] @ tr1 = *(buf0 + 0)@ ti2 = *(buf0 + 1)@ | |
VLD2.I32 {d13, d15}, [r3]! @ tr2 = *(buf1 - 1)@ ti1 = *(buf1 + 0)@ | |
VLD2.I32 {d12, d14}, [r3]! @ tr2 = *(buf1 - 1)@ ti1 = *(buf1 + 0)@ | |
VREV64.32 Q8, Q7 | |
VREV64.32 Q9, Q6 | |
VQDMULH.S32 Q10, Q0, Q4 @ MULHIGH(cosa, tr1) | |
VQDMULH.S32 Q11, Q1, Q8 @ MULHIGH(sina, ti1) | |
VQDMULH.S32 Q12, Q0, Q8 @ MULHIGH(cosa, ti1) | |
VQDMULH.S32 Q13, Q1, Q4 @ MULHIGH(sina, tr1) | |
VADD.S32 Q0, Q10, Q11 @ *buf0++ = MULHIGH(cosa, tr1) + MULHIGH(sina, ti1)@ | |
VSUB.S32 Q1, Q12, Q13 @ *buf0++ = MULHIGH(cosa, ti1) - MULHIGH(sina, tr1)@ | |
VST2.I32 {d0, d1, d2, d3}, [r0]! | |
sub r3, r3, #32 | |
VQDMULH.S32 Q10, Q2, Q9 @ MULHIGH(cosb, tr2) | |
VQDMULH.S32 Q11, Q3, Q5 @ MULHIGH(sinb, ti2) | |
VQDMULH.S32 Q12, Q2, Q5 @ MULHIGH(cosb, ti2) | |
VQDMULH.S32 Q13, Q3, Q9 @ MULHIGH(sinb, tr2) | |
VADD.S32 Q0, Q10, Q11 @ MULHIGH(cosa, tr2) + MULHIGH(sina, ti2)@ | |
VSUB.S32 Q1, Q12, Q13 @ MULHIGH(cosa, ti2) - MULHIGH(sina, tr2)@ | |
VREV64.32 Q3, Q1 | |
VREV64.32 Q2, Q0 | |
VST2.I32 {d5, d7}, [r3]! | |
VST2.I32 {d4, d6}, [r3]! | |
subs r1, r1, #4 | |
sub r3, r3, #64 | |
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, #32 | |
movs r1, r1, asr #2 | |
beq PostMDCT_END | |
PostMDCT_LOOP: | |
VLD4.I32 {d0, d2, d4, d6}, [r2]! @ cosa = *csptr++@ sina = *csptr++@ | |
VLD4.I32 {d1, d3, d5, d7}, [r2]! @ cosb = *csptr++@ sinb = *csptr++@ | |
VLD2.I32 {d8, d9, d10, d11}, [r0] @ tr1 = *(zbuf1 + 0)@ ti1 = *(zbuf1 + 1)@ | |
VLD2.I32 {d13, d15}, [r3]! @ tr2 = *(zbuf2 - 1)@ ti2 = *(zbuf2 + 0)@ | |
VLD2.I32 {d12, d14}, [r3]! @ tr2 = *(zbuf2 - 1)@ ti2 = *(zbuf2 + 0)@ | |
VREV64.32 Q8, Q6 | |
VREV64.32 Q9, Q7 | |
VQDMULH.S32 Q10, Q0, Q4 @ MULHIGH(cosa, tr1) | |
VQDMULH.S32 Q11, Q1, Q5 @ MULHIGH(sina, ti1) | |
VQDMULH.S32 Q12, Q0, Q5 @ MULHIGH(cosa, ti1) | |
VQDMULH.S32 Q13, Q1, Q4 @ MULHIGH(sina, tr1) | |
VADD.S32 Q0, Q10, Q11 @ *buf0++ = MULHIGH(cosa, tr1) + MULHIGH(sina, ti1)@ | |
VSUB.S32 Q5, Q13, Q12 @ *buf1-- = MULHIGH(sina, tr1) - MULHIGH(cosa, ti1)@ | |
VQDMULH.S32 Q10, Q2, Q8 @ MULHIGH(cosb, tr2) | |
VQDMULH.S32 Q11, Q3, Q9 @ MULHIGH(sinb, ti2) | |
VQDMULH.S32 Q12, Q2, Q9 @ MULHIGH(cosb, ti2) | |
VQDMULH.S32 Q13, Q3, Q8 @ MULHIGH(sinb, tr2) | |
VADD.S32 Q4, Q10, Q11 @ *buf1-- = MULHIGH(cosa, tr2) + MULHIGH(sina, ti2)@ | |
VSUB.S32 Q1, Q13, Q12 @ *buf0++ = MULHIGH(sina, tr2) - MULHIGH(cosa, ti2)@ | |
VREV64.32 Q2, Q4 | |
VREV64.32 Q3, Q5 | |
sub r3, r3, #32 | |
VST2.I32 {d0, d1, d2, d3}, [r0]! | |
VST2.I32 {d5, d7}, [r3]! | |
VST2.I32 {d4, d6}, [r3]! | |
subs r1, r1, #4 | |
sub r3, r3, #64 | |
bne PostMDCT_LOOP | |
PostMDCT_END: | |
ldmia sp!, {r4 - r11, pc} | |
@ENDP @ |PostMDCT| | |
.end |