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