1 /*****************************************************************************
2 * asm.S: arm utility macros
3 *****************************************************************************
4 * Copyright (C) 2008-2011 x264 project
6 * Authors: Mans Rullgard <mans@mansr.com>
7 * David Conrad <lessen42@gmail.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
23 * This program is also available under a commercial proprietary license.
24 * For more information, contact us at licensing@x264.com.
25 *****************************************************************************/
41 .macro require8, val=1
42 ELF .eabi_attribute 24, \val
45 .macro preserve8, val=1
46 ELF .eabi_attribute 25, \val
50 .global EXTERN_ASM\name
54 ELF .type \name, %function
60 #if HAVE_ARMV6T2 && !defined(PIC)
61 movw \rd, #:lower16:\val
62 movt \rd, #:upper16:\val
68 .macro movconst rd, val
70 movw \rd, #:lower16:\val
72 movt \rd, #:upper16:\val
79 #define FENC_STRIDE 16
80 #define FDEC_STRIDE 32
82 .macro HORIZ_ADD dest, a, b
90 .macro SUMSUB_AB sum, diff, a, b
92 vsub.s16 \diff, \a, \b
95 .macro SUMSUB_ABCD s1, d1, s2, d2, a, b, c, d
96 SUMSUB_AB \s1, \d1, \a, \b
97 SUMSUB_AB \s2, \d2, \c, \d
105 // dist = distance in elements (0 for vertical pass, 1/2 for horizontal passes)
106 // op = sumsub/amax (sum and diff / maximum of absolutes)
107 // d1/2 = destination registers
108 // s1/2 = source registers
109 .macro HADAMARD dist, op, d1, d2, s1, s2
116 SUMSUB_AB \d1, \d2, \s1, \s2
120 vmax.s16 \d1, \s1, \s2
124 .macro TRANSPOSE8x8 r0 r1 r2 r3 r4 r5 r6 r7
139 .macro TRANSPOSE4x4 r0 r1 r2 r3
146 .macro TRANSPOSE4x4_16 d0 d1 d2 d3