fix IR interpreter on big-endian machines.

hrydgard · May 5, 2018 · 0188d5c · 0188d5c
1 parent 3ed4294
commit 0188d5c
Show file tree

Hide file tree

Showing 2 changed files with 20 additions and 18 deletions.
diff --git a/Core/MIPS/IR/IRInterpreter.cpp b/Core/MIPS/IR/IRInterpreter.cpp
@@ -618,45 +618,47 @@ u32 IRInterpret(MIPSState *mips, const IRInst *inst, int count) {
 		case IROp::Mult:
 		{
 			s64 result = (s64)(s32)mips->r[inst->src1] * (s64)(s32)mips->r[inst->src2];
-			memcpy(&mips->lo, &result, 8);
+			mips->lo = (u32)result;
+			mips->hi = (u32)(result >> 32);
 			break;
 		}
 		case IROp::MultU:
 		{
 			u64 result = (u64)mips->r[inst->src1] * (u64)mips->r[inst->src2];
-			memcpy(&mips->lo, &result, 8);
+			mips->lo = (u32)result;
+			mips->hi = (u32)(result >> 32);
 			break;
 		}
 		case IROp::Madd:
 		{
-			s64 result;
-			memcpy(&result, &mips->lo, 8);
+			s64 result = (s64)((u64)mips->lo | ((u64)mips->hi << 32));
 			result += (s64)(s32)mips->r[inst->src1] * (s64)(s32)mips->r[inst->src2];
-			memcpy(&mips->lo, &result, 8);
+			mips->lo = (u32)result;
+			mips->hi = (u32)(result >> 32);
 			break;
 		}
 		case IROp::MaddU:
 		{
-			s64 result;
-			memcpy(&result, &mips->lo, 8);
+			s64 result = (s64)((u64)mips->lo | ((u64)mips->hi << 32));
 			result += (u64)mips->r[inst->src1] * (u64)mips->r[inst->src2];
-			memcpy(&mips->lo, &result, 8);
+			mips->lo = (u32)result;
+			mips->hi = (u32)(result >> 32);
 			break;
 		}
 		case IROp::Msub:
 		{
-			s64 result;
-			memcpy(&result, &mips->lo, 8);
+			s64 result = (s64)((u64)mips->lo | ((u64)mips->hi << 32));
 			result -= (s64)(s32)mips->r[inst->src1] * (s64)(s32)mips->r[inst->src2];
-			memcpy(&mips->lo, &result, 8);
+			mips->lo = (u32)result;
+			mips->hi = (u32)(result >> 32);
 			break;
 		}
 		case IROp::MsubU:
 		{
-			s64 result;
-			memcpy(&result, &mips->lo, 8);
+			s64 result = (s64)((u64)mips->lo | ((u64)mips->hi << 32));
 			result -= (u64)mips->r[inst->src1] * (u64)mips->r[inst->src2];
-			memcpy(&mips->lo, &result, 8);
+			mips->lo = (u32)result;
+			mips->hi = (u32)(result >> 32);
 			break;
 		}
 

diff --git a/Core/MemMap.h b/Core/MemMap.h
@@ -189,9 +189,9 @@ inline u32 ReadUnchecked_U32(const u32 address) {
 
 inline float ReadUnchecked_Float(const u32 address) {
 #ifdef MASKED_PSP_MEMORY
-	return *(float *)(base + (address & MEMVIEW32_MASK));
+	return *(float_le *)(base + (address & MEMVIEW32_MASK));
 #else
-	return *(float *)(base + address);
+	return *(float_le *)(base + address);
 #endif
 }
 
@@ -221,9 +221,9 @@ inline void WriteUnchecked_U32(u32 data, u32 address) {
 
 inline void WriteUnchecked_Float(float data, u32 address) {
 #ifdef MASKED_PSP_MEMORY
-	*(float *)(base + (address & MEMVIEW32_MASK)) = data;
+	*(float_le *)(base + (address & MEMVIEW32_MASK)) = data;
 #else
-	*(float *)(base + address) = data;
+	*(float_le *)(base + address) = data;
 #endif
 }