Mesa (master): util: Add util_memcpy_cpu_to_le32() v3
Tom Stellard
tstellar at kemper.freedesktop.org
Mon Jul 28 15:21:35 UTC 2014
Module: Mesa
Branch: master
Commit: f0e0737922061f0eb38d5016c40d86226ee40e61
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=f0e0737922061f0eb38d5016c40d86226ee40e61
Author: Tom Stellard <thomas.stellard at amd.com>
Date: Fri Jul 18 15:55:08 2014 -0400
util: Add util_memcpy_cpu_to_le32() v3
v2:
- Preserve word boundaries.
v3:
- Use const and restrict.
- Fix indentation.
Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>
---
src/gallium/auxiliary/util/u_math.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index b9ed197..f6dcb22 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -812,6 +812,23 @@ util_bswap16(uint16_t n)
(n << 8);
}
+static INLINE void*
+util_memcpy_cpu_to_le32(void * restrict dest, const void * restrict src, size_t n)
+{
+#ifdef PIPE_ARCH_BIG_ENDIAN
+ size_t i, e;
+ asset(n % 4 == 0);
+
+ for (i = 0, e = n / 4; i < e; i++) {
+ uint32_t * restrict d = (uint32_t* restrict)dest;
+ const uint32_t * restrict s = (const uint32_t* restrict)src;
+ d[i] = util_bswap32(s[i]);
+ }
+ return dest;
+#else
+ return memcpy(dest, src, n);
+#endif
+}
/**
* Clamp X to [MIN, MAX].
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