diff options
author | Lioncash <mathew1800@gmail.com> | 2015-01-02 18:21:45 -0500 |
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committer | Lioncash <mathew1800@gmail.com> | 2015-01-02 18:29:30 -0500 |
commit | 3337b846204c3d18fde4e28ad1558f5e73532ccc (patch) | |
tree | 32689d9d8e3c8cb811682c9b025370fa0c332844 /src/core/arm/interpreter/armsupp.cpp | |
parent | 092a67cefbe5aa178b5f9b832fe274bce67f4d10 (diff) |
dyncom: Implement SMLAD/SMUAD/SMLSD/SMUSD
Diffstat (limited to 'src/core/arm/interpreter/armsupp.cpp')
-rw-r--r-- | src/core/arm/interpreter/armsupp.cpp | 8 |
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. */ |