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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
ixheaacd_shiftrountine:
CMP r3, #0
STMFD sp!, {r4-r7, r12}
MOV r12, #0x1f
BGE SROUTINE_L1
RSB r3, r3, #0
CMP r3, r12
MOVGT r3, r12
SUBS r2, r2, #2
@ LDMMIFD sp!, {r4-r7, r12}
LDMFDMI sp!, {r4-r7, r12}
BXMI lr
SROUTINE_L2:
LDR r12, [r0, #0]
LDR r4, [r1, #0]
MOV r12, r12, ASR r3
MOV r4, r4, ASR r3
STR r12, [r0], #4
STR r4, [r1], #4
LDR r12, [r0, #0]
LDR r4, [r1, #0]
MOV r12, r12, ASR r3
MOV r4, r4, ASR r3
SUBS r2, r2, #2
STR r12, [r0], #4
STR r4, [r1], #4
BPL SROUTINE_L2
LDMFD sp!, {r4-r7, r12}
BX lr
SROUTINE_L1:
SUBS r4, r2, #2
RSB r2, r3, #0x1f
@ LDMMIFD sp!, {r4-r7, r12}
LDMFDMI sp!, {r4-r7, r12}
BXMI lr
SROUTINE_L3:
LDR r12, [r0, #0]
LDR r5, [r1, #0]
MOVS r7, r12, ASR r2
CMNLT r7, #1
MOVLT r6, #0x80000000
MVNGT r6, #0x80000000
MOVEQ r6, r12, LSL r3
MOVS r7, r5, ASR r2
CMNLT r7, #1
MOVLT r12, #0x80000000
MVNGT r12, #0x80000000
MOVEQ r12, r5, LSL r3
STR r6, [r0], #4
STR r12, [r1], #4
LDR r12, [r0, #0]
LDR r5, [r1, #0]
MOVS r7, r12, ASR r2
CMNLT r7, #1
MOVLT r6, #0x80000000
MVNGT r6, #0x80000000
MOVEQ r6, r12, LSL r3
MOVS r7, r5, ASR r2
CMNLT r7, #1
MOVLT r12, #0x80000000
MVNGT r12, #0x80000000
MOVEQ r12, r5, LSL r3
SUBS r4, r4, #2
STR r6, [r0], #4
STR r12, [r1], #4
BPL SROUTINE_L3
LDMFD sp!, {r4-r7, r12}
BX lr
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