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| author |  bunnei <bunneidev@gmail.com> | 2014-12-28 11:57:25 -0500 |
|---|---|---|
| committer | bunnei <bunneidev@gmail.com> | 2014-12-28 11:57:25 -0500 |
| commit | 762f16c4ad84d50490c7a1db9d636e6c41c8aa09 (patch) | |
| tree | bc8c7c383f85f593b1a30cb6e7c857ddc19c91ff /src/core/arm/interpreter/armsupp.cpp | |
| parent | 3422d81f053578e2a6806dc9ffa33c50f2c0b66d (diff) | |
| parent | 059c65a27af538cba40aa43d2eeb3a544661a9b8 (diff) | |
Merge pull request #354 from lioncash/usaduflow
armemu: Fix underflows in USAD8/USADA8
Diffstat (limited to 'src/core/arm/interpreter/armsupp.cpp')
| -rw-r--r-- | src/core/arm/interpreter/armsupp.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/core/arm/interpreter/armsupp.cpp b/src/core/arm/interpreter/armsupp.cpp index 186b1bd7..8f158e2c 100644 --- a/src/core/arm/interpreter/armsupp.cpp +++ b/src/core/arm/interpreter/armsupp.cpp @@ -392,6 +392,15 @@ ARMul_NthReg (ARMword instr, unsigned number) return (bit - 1); } +/* Unsigned sum of absolute difference */ +u8 ARMul_UnsignedAbsoluteDifference(u8 left, u8 right) +{ + if (left > right) + return left - right; + + return right - left; +} + /* Assigns the N and Z flags depending on the value of result. */ void |