yading@11: /*
yading@11:  * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #ifndef AVUTIL_ARM_INTMATH_H
yading@11: #define AVUTIL_ARM_INTMATH_H
yading@11: 
yading@11: #include <stdint.h>
yading@11: 
yading@11: #include "config.h"
yading@11: #include "libavutil/attributes.h"
yading@11: 
yading@11: #if HAVE_INLINE_ASM
yading@11: 
yading@11: #if HAVE_ARMV6_INLINE
yading@11: 
yading@11: #define av_clip_uint8 av_clip_uint8_arm
yading@11: static av_always_inline av_const unsigned av_clip_uint8_arm(int a)
yading@11: {
yading@11:     unsigned x;
yading@11:     __asm__ ("usat %0, #8,  %1" : "=r"(x) : "r"(a));
yading@11:     return x;
yading@11: }
yading@11: 
yading@11: #define av_clip_int8 av_clip_int8_arm
yading@11: static av_always_inline av_const int av_clip_int8_arm(int a)
yading@11: {
yading@11:     int x;
yading@11:     __asm__ ("ssat %0, #8,  %1" : "=r"(x) : "r"(a));
yading@11:     return x;
yading@11: }
yading@11: 
yading@11: #define av_clip_uint16 av_clip_uint16_arm
yading@11: static av_always_inline av_const unsigned av_clip_uint16_arm(int a)
yading@11: {
yading@11:     unsigned x;
yading@11:     __asm__ ("usat %0, #16, %1" : "=r"(x) : "r"(a));
yading@11:     return x;
yading@11: }
yading@11: 
yading@11: #define av_clip_int16 av_clip_int16_arm
yading@11: static av_always_inline av_const int av_clip_int16_arm(int a)
yading@11: {
yading@11:     int x;
yading@11:     __asm__ ("ssat %0, #16, %1" : "=r"(x) : "r"(a));
yading@11:     return x;
yading@11: }
yading@11: 
yading@11: #define av_clip_uintp2 av_clip_uintp2_arm
yading@11: static av_always_inline av_const unsigned av_clip_uintp2_arm(int a, int p)
yading@11: {
yading@11:     unsigned x;
yading@11:     __asm__ ("usat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p));
yading@11:     return x;
yading@11: }
yading@11: 
yading@11: #define av_sat_add32 av_sat_add32_arm
yading@11: static av_always_inline int av_sat_add32_arm(int a, int b)
yading@11: {
yading@11:     int r;
yading@11:     __asm__ ("qadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
yading@11:     return r;
yading@11: }
yading@11: 
yading@11: #define av_sat_dadd32 av_sat_dadd32_arm
yading@11: static av_always_inline int av_sat_dadd32_arm(int a, int b)
yading@11: {
yading@11:     int r;
yading@11:     __asm__ ("qdadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
yading@11:     return r;
yading@11: }
yading@11: 
yading@11: #endif /* HAVE_ARMV6_INLINE */
yading@11: 
yading@11: #if HAVE_ASM_MOD_Q
yading@11: 
yading@11: #define av_clipl_int32 av_clipl_int32_arm
yading@11: static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a)
yading@11: {
yading@11:     int x, y;
yading@11:     __asm__ ("adds   %1, %R2, %Q2, lsr #31  \n\t"
yading@11:              "itet   ne                     \n\t"
yading@11:              "mvnne  %1, #1<<31             \n\t"
yading@11:              "moveq  %0, %Q2                \n\t"
yading@11:              "eorne  %0, %1,  %R2, asr #31  \n\t"
yading@11:              : "=r"(x), "=&r"(y) : "r"(a) : "cc");
yading@11:     return x;
yading@11: }
yading@11: 
yading@11: #endif /* HAVE_ASM_MOD_Q */
yading@11: 
yading@11: #endif /* HAVE_INLINE_ASM */
yading@11: 
yading@11: #endif /* AVUTIL_ARM_INTMATH_H */