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52 lines
1.7 KiB
52 lines
1.7 KiB
/* |
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "asm.S" |
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function ff_ac3_compute_mantissa_size_arm, export=1 |
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push {r4-r8,lr} |
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ldm r0, {r4-r8} |
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mov r3, r0 |
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mov r0, #0 |
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1: |
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ldrb lr, [r1], #1 |
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subs r2, r2, #1 |
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blt 2f |
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cmp lr, #4 |
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bgt 3f |
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subs lr, lr, #1 |
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addlt r4, r4, #1 |
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addeq r5, r5, #1 |
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ble 1b |
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subs lr, lr, #2 |
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addlt r6, r6, #1 |
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addeq r7, r7, #1 |
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addgt r8, r8, #1 |
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b 1b |
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3: |
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cmp lr, #14 |
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sublt lr, lr, #1 |
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addgt r0, r0, #16 |
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addle r0, r0, lr |
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b 1b |
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2: |
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stm r3, {r4-r8} |
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pop {r4-r8,pc} |
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endfunc
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