From ea66f252a8fa92dcb0efb54c805071e91e149e13 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A5ns=20Rullg=C3=A5rd?= <mans@mansr.com>
Date: Tue, 15 Jul 2008 19:05:49 +0000
Subject: [PATCH] ARM: ARMv6 optimised bswap_16/32
Originally committed as revision 14239 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavutil/bswap.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavutil/bswap.h b/libavutil/bswap.h
index b35fb516133..e1aa3f433ef 100644
--- a/libavutil/bswap.h
+++ b/libavutil/bswap.h
@@ -40,6 +40,8 @@ static av_always_inline av_const uint16_t bswap_16(uint16_t x)
asm("rorw $8, %0" : "+r"(x));
#elif defined(ARCH_SH4)
asm("swap.b %0,%0" : "=r"(x) : "0"(x));
+#elif defined(HAVE_ARMV6)
+ asm("rev16 %0, %0" : "+r"(x));
#else
x= (x>>8) | (x<<8);
#endif
@@ -62,6 +64,8 @@ static av_always_inline av_const uint32_t bswap_32(uint32_t x)
"swap.w %0,%0\n"
"swap.b %0,%0\n"
: "=r"(x) : "0"(x));
+#elif defined(HAVE_ARMV6)
+ asm("rev %0, %0" : "+r"(x));
#elif defined(ARCH_ARM)
uint32_t t;
asm ("eor %1, %0, %0, ror #16 \n\t"
--
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