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authorGravatar Lioncash <mathew1800@gmail.com>2015-01-02 18:21:45 -0500
committerGravatar Lioncash <mathew1800@gmail.com>2015-01-02 18:29:30 -0500
commit3337b846204c3d18fde4e28ad1558f5e73532ccc (patch)
tree32689d9d8e3c8cb811682c9b025370fa0c332844 /src/core/arm/interpreter/armsupp.cpp
parent092a67cefbe5aa178b5f9b832fe274bce67f4d10 (diff)
dyncom: Implement SMLAD/SMUAD/SMLSD/SMUSD
Diffstat (limited to 'src/core/arm/interpreter/armsupp.cpp')
-rw-r--r--src/core/arm/interpreter/armsupp.cpp8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/core/arm/interpreter/armsupp.cpp b/src/core/arm/interpreter/armsupp.cpp
index 426b6783..eec34143 100644
--- a/src/core/arm/interpreter/armsupp.cpp
+++ b/src/core/arm/interpreter/armsupp.cpp
@@ -453,12 +453,14 @@ ARMul_AddOverflow (ARMul_State * state, ARMword a, ARMword b, ARMword result)
ASSIGNV (AddOverflow (a, b, result));
}
-/* Assigns the Q flag if the given result is considered an overflow from the addition of a and b */
-void ARMul_AddOverflowQ(ARMul_State* state, ARMword a, ARMword b)
+// Returns true if the Q flag should be set as a result of overflow.
+bool ARMul_AddOverflowQ(ARMword a, ARMword b)
{
u32 result = a + b;
if (((result ^ a) & (u32)0x80000000) && ((a ^ b) & (u32)0x80000000) == 0)
- SETQ;
+ return true;
+
+ return false;
}
/* Assigns the C flag after an subtraction of a and b to give result. */