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@/******************************************************************************
@ *
@ * Copyright (C) 2018 The Android Open Source Project
@ *
@ * 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.
@ *
@ *****************************************************************************
@ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
@*/
.code 32
.eabi_attribute 24, 1 @Tag_ABI_align_needed
.eabi_attribute 25, 1 @Tag_ABI_align_preserved
.text
.p2align 2
.global ixheaacd_shiftrountine_with_rnd
ixheaacd_shiftrountine_with_rnd:
STMFD sp!, {r4-r12, r14}
MOV r4, #0x1f
ADD r12, r2, r3, LSL #1
MOV r9, #0x8000
SUBS r3, r3, #1
BMI S_WITH_R_L6
S_WITH_R_L5:
LDR r5, [r1, r3, LSL #2]
LDR r7, [r0, r3, LSL #2]
LDR r14, [r0], #4
LDR r10, [r1], #4
ADD r6, r5, r7
SUB r5, r5, r7
ADD r7, r10, r14
SUB r4, r10, r14
MOVS r10, r4, ASR #0x15
CMNLT r10, #1
MOVLT r4, #0x80000000
MVNGT r4, #0x80000000
MOVEQ r4, r4, LSL #10
MOVS r10, r5, ASR #0x15
QADD r4, r4, r9
CMNLT r10, #1
MOV r4, r4, ASR #16
MOVLT r5, #0x80000000
MVNGT r5, #0x80000000
MOVEQ r5, r5, LSL #10
MOV r14, r3, lsl #1
MOVS r10, r6, ASR #0x15
QADD r5, r5, r9
CMNLT r10, #1
MOV r5, r5, ASR #16
MOVLT r6, #0x80000000
STRH r5, [r2, r14]
MVNGT r6, #0x80000000
MOVEQ r6, r6, LSL #10
MOVS r10, r7, ASR #0x15
QADD r6, r6, r9
CMNLT r10, #1
MOV r6, r6, ASR #16
MOVLT r7, #0x80000000
MVNGT r7, #0x80000000
MOVEQ r7, r7, LSL #10
QADD r7, r7, r9
STRH r4, [r2], #2
MOV r7, r7, ASR #16
STRH r7, [r12, r14]
SUBS r3, r3, #2
STRH r6, [r12], #2
BGE S_WITH_R_L5
S_WITH_R_L6:
LDMFD sp!, {r4-r12, r15}
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