diff options
Diffstat (limited to 'src/core/arm/interpreter/armsupp.cpp')
| -rw-r--r-- | src/core/arm/interpreter/armsupp.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/core/arm/interpreter/armsupp.cpp b/src/core/arm/interpreter/armsupp.cpp index 30519f216..6774f8a74 100644 --- a/src/core/arm/interpreter/armsupp.cpp +++ b/src/core/arm/interpreter/armsupp.cpp @@ -227,8 +227,9 @@ ARMul_CPSRAltered (ARMul_State * state) //state->Cpsr &= ~CBIT; ASSIGNV ((state->Cpsr & VBIT) != 0); //state->Cpsr &= ~VBIT; - ASSIGNS ((state->Cpsr & SBIT) != 0); - //state->Cpsr &= ~SBIT; + ASSIGNQ ((state->Cpsr & QBIT) != 0); + //state->Cpsr &= ~QBIT; + state->GEFlag = (state->Cpsr & 0x000F0000); #ifdef MODET ASSIGNT ((state->Cpsr & TBIT) != 0); //state->Cpsr &= ~TBIT; @@ -443,6 +444,14 @@ 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) +{ + u32 result = a + b; + if (((result ^ a) & (u32)0x80000000) && ((a ^ b) & (u32)0x80000000) == 0) + SETQ; +} + /* Assigns the C flag after an subtraction of a and b to give result. */ void |