113 lines
2.9 KiB
ArmAsm
113 lines
2.9 KiB
ArmAsm
@/******************************************************************************
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@ *
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@ * Copyright (C) 2018 The Android Open Source Project
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@ *
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@ * Licensed under the Apache License, Version 2.0 (the "License");
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@ * you may not use this file except in compliance with the License.
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@ * You may obtain a copy of the License at:
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@ *
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@ * http://www.apache.org/licenses/LICENSE-2.0
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@ *
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@ * Unless required by applicable law or agreed to in writing, software
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@ * distributed under the License is distributed on an "AS IS" BASIS,
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@ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@ * See the License for the specific language governing permissions and
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@ * limitations under the License.
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@ *
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@ *****************************************************************************
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@ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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@*/
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.code 32
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.eabi_attribute 24, 1 @Tag_ABI_align_needed
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.eabi_attribute 25, 1 @Tag_ABI_align_preserved
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.text
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.p2align 2
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.global ixheaacd_shiftrountine_with_rnd
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.type ixheaacd_shiftrountine_with_rnd, %function
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ixheaacd_shiftrountine_with_rnd:
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STMFD sp!, {r4-r12, r14}
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MOV r4, #0x1f
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ADD r12, r2, r3, LSL #1
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MOV r9, #0x8000
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SUBS r3, r3, #1
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BMI S_WITH_R_L6
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S_WITH_R_L5:
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LDR r5, [r1, r3, LSL #2]
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LDR r7, [r0, r3, LSL #2]
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LDR r14, [r0], #4
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LDR r10, [r1], #4
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ADD r6, r5, r7
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SUB r5, r5, r7
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ADD r7, r10, r14
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SUB r4, r10, r14
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MOVS r10, r4, ASR #0x15
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CMNLT r10, #1
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MOVLT r4, #0x80000000
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MVNGT r4, #0x80000000
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MOVEQ r4, r4, LSL #10
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MOVS r10, r5, ASR #0x15
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QADD r4, r4, r9
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CMNLT r10, #1
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MOV r4, r4, ASR #16
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MOVLT r5, #0x80000000
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MVNGT r5, #0x80000000
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MOVEQ r5, r5, LSL #10
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MOV r14, r3, lsl #1
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MOVS r10, r6, ASR #0x15
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QADD r5, r5, r9
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CMNLT r10, #1
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MOV r5, r5, ASR #16
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MOVLT r6, #0x80000000
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STRH r5, [r2, r14]
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MVNGT r6, #0x80000000
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MOVEQ r6, r6, LSL #10
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MOVS r10, r7, ASR #0x15
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QADD r6, r6, r9
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CMNLT r10, #1
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MOV r6, r6, ASR #16
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MOVLT r7, #0x80000000
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MVNGT r7, #0x80000000
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MOVEQ r7, r7, LSL #10
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QADD r7, r7, r9
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STRH r4, [r2], #2
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MOV r7, r7, ASR #16
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STRH r7, [r12, r14]
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SUBS r3, r3, #2
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STRH r6, [r12], #2
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BGE S_WITH_R_L5
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S_WITH_R_L6:
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LDMFD sp!, {r4-r12, r15}
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