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From: Dejan Latinovic <Dejan.Latinovic@imgtec.com>
Date: Tue, 11 Mar 2014 18:16:39 +0100
Description: Fix unaligned memory access errors on MIPS systems
This patch fixes unaligned memory access errors on MIPS systems.
Debian-Bug:
--- a/src/core/typecast.c 2014-03-17 17:03:03.868239764 +0000
+++ b/src/core/typecast.c 2014-03-17 17:07:18.253726412 +0000
@@ -37,6 +37,28 @@ static void cast_##tsrc##_##tdst (void*
} \
}
+// Prototype of a generic type scale and cast function for unaligned memory access
+#define DEFINE_CASTUNALIGNED_FN(tsrc, tdst) \
+static void cast_##tsrc##_##tdst (void* restrict d, const void* restrict s, union gval sc, size_t len) \
+{ \
+ union dstdata \
+ { \
+ tdst Data; \
+ unsigned int intData[2]; \
+ }; \
+ const tsrc* src = s; \
+ union dstdata *dst = d; \
+ tdst scale = sc.val##tdst; \
+ while(len) \
+ { \
+ union dstdata dst_tmp; \
+ dst_tmp.Data = scale * ((tdst)(*src)); \
+ dst->intData[0] = dst_tmp.intData[0]; \
+ dst->intData[1] = dst_tmp.intData[1]; \
+ src++; dst++; \
+ len -= sizeof(*src); \
+ } \
+}
// Prototype of a generic type cast function
#define DEFINE_CASTNOSC_FN(tsrc, tdst) \
static void castnosc_##tsrc##_##tdst (void* restrict d, const void* restrict s, union gval sc, size_t len) \
@@ -60,7 +82,7 @@ static void identity(void* restrict d, c
// Declaration/definition of type cast and scale functions
DEFINE_CAST_FN(int32_t, int32_t)
-DEFINE_CAST_FN(int32_t, double)
+DEFINE_CASTUNALIGNED_FN(int32_t, double)
DEFINE_CAST_FN(double, int32_t)
DEFINE_CAST_FN(int32_t, float)
DEFINE_CAST_FN(float, int32_t)
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