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@/*
@ ** 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.
@ */
@
@void Pred_lt4(
@ Word16 exc[], /* in/out: excitation buffer */
@ Word16 T0, /* input : integer pitch lag */
@ Word16 frac, /* input : fraction of lag */
@ Word16 L_subfr /* input : subframe size */
@ )
@******************************
@ ARM Register
@******************************
@ r0 --- exc[]
@ r1 --- T0
@ r2 --- frac
@ r3 --- L_subfr
.section .text
.global pred_lt4_asm
.extern inter4_2
.hidden inter4_2
pred_lt4_asm:
STMFD r13!, {r4 - r12, r14}
RSB r4, r1, #0 @-T0
RSB r2, r2, #0 @frac = -frac
ADD r5, r0, r4, LSL #1 @x = exc - T0
CMP r2, #0
ADDLT r2, r2, #4 @frac += UP_SAMP
SUBLT r5, r5, #2 @x--
SUB r5, r5, #30 @x -= 15
RSB r4, r2, #3 @k = 3 - frac
ADRL r8, Table
LDR r6, [r8]
ADD r6, r8
MOV r8, r4, LSL #6
@MOV r7, #0 @j = 0
ADD r8, r6, r8 @ptr2 = &(inter4_2[k][0])
MOV r1, r5
MOV r5, #0x8000
MOV r14, #21
@ used register
@r0 --- exc[] r1 --- x r7 --- j r8 --- ptr2 r5 --- 0x8000
THREE_LOOP:
@MOV r1, r5 @ptr1 = x
MOV r2, r8 @ptr = ptr2
LDR r3, [r2], #4 @h[0], h[1]
LDRSH r4, [r1], #2 @x[0]
LDRSH r6, [r1], #2 @x[1]
LDRSH r9, [r1], #2 @x[2]
SMULBB r10, r4, r3 @x[0] * h[0]
SMULBB r11, r6, r3 @x[1] * h[0]
SMULBB r12, r9, r3 @x[2] * h[0]
LDRSH r4, [r1], #2 @x[3]
SMLABT r10, r6, r3, r10 @x[1] * h[1]
SMLABT r11, r9, r3, r11 @x[2] * h[1]
SMLABT r12, r4, r3, r12 @x[3] * h[1]
LDR r3, [r2], #4 @h[2], h[3]
LDRSH r6, [r1], #2 @x[4]
SMLABB r10, r9, r3, r10 @x[2] * h[2]
SMLABB r11, r4, r3, r11 @x[3] * h[2]
SMLABB r12, r6, r3, r12 @x[4] * h[2]
LDRSH r9, [r1], #2 @x[5]
SMLABT r10, r4, r3, r10 @x[3] * h[3]
SMLABT r11, r6, r3, r11 @x[4] * h[3]
SMLABT r12, r9, r3, r12 @x[5] * h[3]
LDR r3, [r2], #4 @h[4], h[5]
LDRSH r4, [r1], #2 @x[6]
SMLABB r10, r6, r3, r10 @x[4] * h[4]
SMLABB r11, r9, r3, r11 @x[5] * h[4]
SMLABB r12, r4, r3, r12 @x[6] * h[4]
LDRSH r6, [r1], #2 @x[7]
SMLABT r10, r9, r3, r10 @x[5] * h[5]
SMLABT r11, r4, r3, r11 @x[6] * h[5]
SMLABT r12, r6, r3, r12 @x[7] * h[5]
LDR r3, [r2], #4 @h[6], h[7]
LDRSH r9, [r1], #2 @x[8]
SMLABB r10, r4, r3, r10 @x[6] * h[6]
SMLABB r11, r6, r3, r11 @x[7] * h[6]
SMLABB r12, r9, r3, r12 @x[8] * h[6]
LDRSH r4, [r1], #2 @x[9]
SMLABT r10, r6, r3, r10 @x[7] * h[7]
SMLABT r11, r9, r3, r11 @x[8] * h[7]
SMLABT r12, r4, r3, r12 @x[9] * h[7]
LDR r3, [r2], #4 @h[8], h[9]
LDRSH r6, [r1], #2 @x[10]
SMLABB r10, r9, r3, r10 @x[8] * h[8]
SMLABB r11, r4, r3, r11 @x[9] * h[8]
SMLABB r12, r6, r3, r12 @x[10] * h[8]
LDRSH r9, [r1], #2 @x[11]
SMLABT r10, r4, r3, r10 @x[9] * h[9]
SMLABT r11, r6, r3, r11 @x[10] * h[9]
SMLABT r12, r9, r3, r12 @x[11] * h[9]
LDR r3, [r2], #4 @h[10], h[11]
LDRSH r4, [r1], #2 @x[12]
SMLABB r10, r6, r3, r10 @x[10] * h[10]
SMLABB r11, r9, r3, r11 @x[11] * h[10]
SMLABB r12, r4, r3, r12 @x[12] * h[10]
LDRSH r6, [r1], #2 @x[13]
SMLABT r10, r9, r3, r10 @x[11] * h[11]
SMLABT r11, r4, r3, r11 @x[12] * h[11]
SMLABT r12, r6, r3, r12 @x[13] * h[11]
LDR r3, [r2], #4 @h[12], h[13]
LDRSH r9, [r1], #2 @x[14]
SMLABB r10, r4, r3, r10 @x[12] * h[12]
SMLABB r11, r6, r3, r11 @x[13] * h[12]
SMLABB r12, r9, r3, r12 @x[14] * h[12]
LDRSH r4, [r1], #2 @x[15]
SMLABT r10, r6, r3, r10 @x[13] * h[13]
SMLABT r11, r9, r3, r11 @x[14] * h[13]
SMLABT r12, r4, r3, r12 @x[15] * h[13]
LDR r3, [r2], #4 @h[14], h[15]
LDRSH r6, [r1], #2 @x[16]
SMLABB r10, r9, r3, r10 @x[14] * h[14]
SMLABB r11, r4, r3, r11 @x[15] * h[14]
SMLABB r12, r6, r3, r12 @x[16] * h[14]
LDRSH r9, [r1], #2 @x[17]
SMLABT r10, r4, r3, r10 @x[15] * h[15]
SMLABT r11, r6, r3, r11 @x[16] * h[15]
SMLABT r12, r9, r3, r12 @x[17] * h[15]
LDR r3, [r2], #4 @h[16], h[17]
LDRSH r4, [r1], #2 @x[18]
SMLABB r10, r6, r3, r10 @x[16] * h[16]
SMLABB r11, r9, r3, r11 @x[17] * h[16]
SMLABB r12, r4, r3, r12 @x[18] * h[16]
LDRSH r6, [r1], #2 @x[19]
SMLABT r10, r9, r3, r10 @x[17] * h[17]
SMLABT r11, r4, r3, r11 @x[18] * h[17]
SMLABT r12, r6, r3, r12 @x[19] * h[17]
LDR r3, [r2], #4 @h[18], h[19]
LDRSH r9, [r1], #2 @x[20]
SMLABB r10, r4, r3, r10 @x[18] * h[18]
SMLABB r11, r6, r3, r11 @x[19] * h[18]
SMLABB r12, r9, r3, r12 @x[20] * h[18]
LDRSH r4, [r1], #2 @x[21]
SMLABT r10, r6, r3, r10 @x[19] * h[19]
SMLABT r11, r9, r3, r11 @x[20] * h[19]
SMLABT r12, r4, r3, r12 @x[21] * h[19]
LDR r3, [r2], #4 @h[20], h[21]
LDRSH r6, [r1], #2 @x[22]
SMLABB r10, r9, r3, r10 @x[20] * h[20]
SMLABB r11, r4, r3, r11 @x[21] * h[20]
SMLABB r12, r6, r3, r12 @x[22] * h[20]
LDRSH r9, [r1], #2 @x[23]
SMLABT r10, r4, r3, r10 @x[21] * h[21]
SMLABT r11, r6, r3, r11 @x[22] * h[21]
SMLABT r12, r9, r3, r12 @x[23] * h[21]
LDR r3, [r2], #4 @h[22], h[23]
LDRSH r4, [r1], #2 @x[24]
SMLABB r10, r6, r3, r10 @x[22] * h[22]
SMLABB r11, r9, r3, r11 @x[23] * h[22]
SMLABB r12, r4, r3, r12 @x[24] * h[22]
LDRSH r6, [r1], #2 @x[25]
SMLABT r10, r9, r3, r10 @x[23] * h[23]
SMLABT r11, r4, r3, r11 @x[24] * h[23]
SMLABT r12, r6, r3, r12 @x[25] * h[23]
LDR r3, [r2], #4 @h[24], h[25]
LDRSH r9, [r1], #2 @x[26]
SMLABB r10, r4, r3, r10 @x[24] * h[24]
SMLABB r11, r6, r3, r11 @x[25] * h[24]
SMLABB r12, r9, r3, r12 @x[26] * h[24]
LDRSH r4, [r1], #2 @x[27]
SMLABT r10, r6, r3, r10 @x[25] * h[25]
SMLABT r11, r9, r3, r11 @x[26] * h[25]
SMLABT r12, r4, r3, r12 @x[27] * h[25]
LDR r3, [r2], #4 @h[26], h[27]
LDRSH r6, [r1], #2 @x[28]
SMLABB r10, r9, r3, r10 @x[26] * h[26]
SMLABB r11, r4, r3, r11 @x[27] * h[26]
SMLABB r12, r6, r3, r12 @x[28] * h[26]
LDRSH r9, [r1], #2 @x[29]
SMLABT r10, r4, r3, r10 @x[27] * h[27]
SMLABT r11, r6, r3, r11 @x[28] * h[27]
SMLABT r12, r9, r3, r12 @x[29] * h[27]
LDR r3, [r2], #4 @h[28], h[29]
LDRSH r4, [r1], #2 @x[30]
SMLABB r10, r6, r3, r10 @x[28] * h[28]
SMLABB r11, r9, r3, r11 @x[29] * h[28]
SMLABB r12, r4, r3, r12 @x[30] * h[28]
LDRSH r6, [r1], #2 @x[31]
SMLABT r10, r9, r3, r10 @x[29] * h[29]
SMLABT r11, r4, r3, r11 @x[30] * h[29]
SMLABT r12, r6, r3, r12 @x[31] * h[29]
LDR r3, [r2], #4 @h[30], h[31]
LDRSH r9, [r1], #2 @x[32]
SMLABB r10, r4, r3, r10 @x[30] * h[30]
SMLABB r11, r6, r3, r11 @x[31] * h[30]
SMLABB r12, r9, r3, r12 @x[32] * h[30]
LDRSH r4, [r1], #-60 @x[33]
SMLABT r10, r6, r3, r10 @x[31] * h[31]
SMLABT r11, r9, r3, r11 @x[32] * h[31]
SMLABT r12, r4, r3, r12 @x[33] * h[31]
@SSAT r10, #32, r10, LSL #2
@SSAT r11, #32, r11, LSL #2
@SSAT r12, #32, r12, LSL #2
MOV r10, r10, LSL #1
MOV r11, r11, LSL #1
MOV r12, r12, LSL #1
QADD r10, r10, r10
QADD r11, r11, r11
QADD r12, r12, r12
QADD r10, r10, r5
QADD r11, r11, r5
QADD r12, r12, r5
SUBS r14, r14, #1
MOV r10, r10, ASR #16
MOV r11, r11, ASR #16
MOV r12, r12, ASR #16
STRH r10, [r0], #2
STRH r11, [r0], #2
STRH r12, [r0], #2
BNE THREE_LOOP
MOV r2, r8 @ptr = ptr2
Last2LOOP:
LDR r3, [r2], #4 @h[0], h[1]
LDRSH r4, [r1], #2 @x[0]
LDRSH r6, [r1], #2 @x[1]
LDRSH r9, [r1], #2 @x[2]
SMULBB r10, r4, r3 @x[0] * h[0]
SMULBB r11, r6, r3 @x[1] * h[0]
SMLABT r10, r6, r3, r10 @x[1] * h[1]
SMLABT r11, r9, r3, r11 @x[2] * h[1]
LDR r3, [r2], #4 @h[2], h[3]
LDRSH r4, [r1], #2 @x[3]
LDRSH r6, [r1], #2 @x[4]
SMLABB r10, r9, r3, r10 @x[2] * h[2]
SMLABB r11, r4, r3, r11 @x[3] * h[2]
SMLABT r10, r4, r3, r10 @x[3] * h[3]
SMLABT r11, r6, r3, r11 @x[4] * h[3]
LDR r3, [r2], #4 @h[4], h[5]
LDRSH r9, [r1], #2 @x[5]
LDRSH r4, [r1], #2 @x[6]
SMLABB r10, r6, r3, r10 @x[4] * h[4]
SMLABB r11, r9, r3, r11 @x[5] * h[4]
SMLABT r10, r9, r3, r10 @x[5] * h[5]
SMLABT r11, r4, r3, r11 @x[6] * h[5]
LDR r3, [r2], #4 @h[6], h[7]
LDRSH r6, [r1], #2 @x[7]
LDRSH r9, [r1], #2 @x[8]
SMLABB r10, r4, r3, r10 @x[6] * h[6]
SMLABB r11, r6, r3, r11 @x[7] * h[6]
SMLABT r10, r6, r3, r10 @x[7] * h[7]
SMLABT r11, r9, r3, r11 @x[8] * h[7]
LDR r3, [r2], #4 @h[8], h[9]
LDRSH r4, [r1], #2 @x[9]
LDRSH r6, [r1], #2 @x[10]
SMLABB r10, r9, r3, r10 @x[8] * h[8]
SMLABB r11, r4, r3, r11 @x[9] * h[8]
SMLABT r10, r4, r3, r10 @x[9] * h[9]
SMLABT r11, r6, r3, r11 @x[10] * h[9]
LDR r3, [r2], #4 @h[10], h[11]
LDRSH r9, [r1], #2 @x[11]
LDRSH r4, [r1], #2 @x[12]
SMLABB r10, r6, r3, r10 @x[10] * h[10]
SMLABB r11, r9, r3, r11 @x[11] * h[10]
SMLABT r10, r9, r3, r10 @x[11] * h[11]
SMLABT r11, r4, r3, r11 @x[12] * h[11]
LDR r3, [r2], #4 @h[12], h[13]
LDRSH r6, [r1], #2 @x[13]
LDRSH r9, [r1], #2 @x[14]
SMLABB r10, r4, r3, r10 @x[12] * h[12]
SMLABB r11, r6, r3, r11 @x[13] * h[12]
SMLABT r10, r6, r3, r10 @x[13] * h[13]
SMLABT r11, r9, r3, r11 @x[14] * h[13]
LDR r3, [r2], #4 @h[14], h[15]
LDRSH r4, [r1], #2 @x[15]
LDRSH r6, [r1], #2 @x[16]
SMLABB r10, r9, r3, r10 @x[14] * h[14]
SMLABB r11, r4, r3, r11 @x[15] * h[14]
SMLABT r10, r4, r3, r10 @x[15] * h[15]
SMLABT r11, r6, r3, r11 @x[16] * h[15]
LDR r3, [r2], #4 @h[16], h[17]
LDRSH r9, [r1], #2 @x[17]
LDRSH r4, [r1], #2 @x[18]
SMLABB r10, r6, r3, r10 @x[16] * h[16]
SMLABB r11, r9, r3, r11 @x[17] * h[16]
SMLABT r10, r9, r3, r10 @x[17] * h[17]
SMLABT r11, r4, r3, r11 @x[18] * h[17]
LDR r3, [r2], #4 @h[18], h[19]
LDRSH r6, [r1], #2 @x[19]
LDRSH r9, [r1], #2 @x[20]
SMLABB r10, r4, r3, r10 @x[18] * h[18]
SMLABB r11, r6, r3, r11 @x[19] * h[18]
SMLABT r10, r6, r3, r10 @x[19] * h[19]
SMLABT r11, r9, r3, r11 @x[20] * h[19]
LDR r3, [r2], #4 @h[20], h[21]
LDRSH r4, [r1], #2 @x[21]
LDRSH r6, [r1], #2 @x[22]
SMLABB r10, r9, r3, r10 @x[20] * h[20]
SMLABB r11, r4, r3, r11 @x[21] * h[20]
SMLABT r10, r4, r3, r10 @x[21] * h[21]
SMLABT r11, r6, r3, r11 @x[22] * h[21]
LDR r3, [r2], #4 @h[22], h[23]
LDRSH r9, [r1], #2 @x[23]
LDRSH r4, [r1], #2 @x[24]
SMLABB r10, r6, r3, r10 @x[22] * h[22]
SMLABB r11, r9, r3, r11 @x[23] * h[22]
SMLABT r10, r9, r3, r10 @x[23] * h[23]
SMLABT r11, r4, r3, r11 @x[24] * h[23]
LDR r3, [r2], #4 @h[24], h[25]
LDRSH r6, [r1], #2 @x[25]
LDRSH r9, [r1], #2 @x[26]
SMLABB r10, r4, r3, r10 @x[24] * h[24]
SMLABB r11, r6, r3, r11 @x[25] * h[24]
SMLABT r10, r6, r3, r10 @x[25] * h[25]
SMLABT r11, r9, r3, r11 @x[26] * h[25]
LDR r3, [r2], #4 @h[26], h[27]
LDRSH r4, [r1], #2 @x[27]
LDRSH r6, [r1], #2 @x[28]
SMLABB r10, r9, r3, r10 @x[26] * h[26]
SMLABB r11, r4, r3, r11 @x[27] * h[26]
SMLABT r10, r4, r3, r10 @x[27] * h[27]
SMLABT r11, r6, r3, r11 @x[28] * h[27]
LDR r3, [r2], #4 @h[28], h[29]
LDRSH r9, [r1], #2 @x[29]
LDRSH r4, [r1], #2 @x[30]
SMLABB r10, r6, r3, r10 @x[28] * h[28]
SMLABB r11, r9, r3, r11 @x[29] * h[28]
SMLABT r10, r9, r3, r10 @x[29] * h[29]
SMLABT r11, r4, r3, r11 @x[30] * h[29]
LDR r3, [r2], #4 @h[30], h[31]
LDRSH r6, [r1], #2 @x[31]
LDRSH r9, [r1], #2 @x[32]
SMLABB r10, r4, r3, r10 @x[30] * h[30]
SMLABB r11, r6, r3, r11 @x[31] * h[30]
SMLABT r10, r6, r3, r10 @x[31] * h[31]
SMLABT r11, r9, r3, r11 @x[32] * h[31]
@SSAT r10, #32, r10, LSL #2
@SSAT r11, #32, r11, LSL #2
MOV r10, r10, LSL #1
MOV r11, r11, LSL #1
QADD r10, r10, r10
QADD r11, r11, r11
QADD r10, r10, r5
QADD r11, r11, r5
MOV r10, r10, ASR #16
MOV r11, r11, ASR #16
STRH r10, [r0], #2
STRH r11, [r0], #2
pred_lt4_end:
LDMFD r13!, {r4 - r12, r15}
Table:
.word inter4_2-Table
@ENDFUNC
.END
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