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-rw-r--r--target-mips/dsp_helper.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/target-mips/dsp_helper.c b/target-mips/dsp_helper.c
index 4870e3dbbc..aed4c637c3 100644
--- a/target-mips/dsp_helper.c
+++ b/target-mips/dsp_helper.c
@@ -20,6 +20,28 @@
#include "cpu.h"
#include "helper.h"
+/* As the byte ordering doesn't matter, i.e. all columns are treated
+ identically, these unions can be used directly. */
+typedef union {
+ uint8_t ub[4];
+ int8_t sb[4];
+ uint16_t uh[2];
+ int16_t sh[2];
+ uint32_t uw[1];
+ int32_t sw[1];
+} DSP32Value;
+
+typedef union {
+ uint8_t ub[8];
+ int8_t sb[8];
+ uint16_t uh[4];
+ int16_t sh[4];
+ uint32_t uw[2];
+ int32_t sw[2];
+ uint64_t ul[1];
+ int64_t sl[1];
+} DSP64Value;
+
/*** MIPS DSP internal functions begin ***/
#define MIPSDSP_ABS(x) (((x) >= 0) ? x : -x)
#define MIPSDSP_OVERFLOW(a, b, c, d) (!(!((a ^ b ^ -1) & (a ^ c) & d)))