M CHANGES → CHANGES

@@ -31,6 +31,7 @@ - GBA: Fix Iridion II savetype
  - Libretro: Fix aspect ratio
  - Qt: Fix some potential crashes with the gamepad mapping
  - Debugger: Fix watchpoints in gdb
+ - ARM7: Fix decoding of some ARM ALU instructions with shifters
 Misc:
  - Qt: Window size command line options are now supported
  - Qt: Increase usability of key mapper

M src/arm/decoder-arm.c → src/arm/decoder-arm.c

@@ -11,9 +11,9 @@ #include "isa-inlines.h"
 
 #define ADDR_MODE_1_SHIFT(OP) \
 	info->op3.reg = opcode & 0x0000000F; \
+	info->op3.shifterOp = ARM_SHIFT_ ## OP; \
 	info->operandFormat |= ARM_OPERAND_REGISTER_3; \
 	if (opcode & 0x00000010) { \
-		info->op3.shifterOp = ARM_SHIFT_ ## OP; \
 		info->op3.shifterReg = (opcode >> 8) & 0xF; \
 		++info->iCycles; \
 		info->operandFormat |= ARM_OPERAND_SHIFT_REGISTER_3; \
@@ -101,11 +101,13 @@ ARM_OPERAND_REGISTER_2; \
 		info->affectsCPSR = S; \
 		SHIFTER; \
 		if (SKIPPED == 1) { \
-			info->operandFormat >>= 8; \
 			info->op1 = info->op2; \
 			info->op2 = info->op3; \
+			info->operandFormat >>= 8; \
 		} else if (SKIPPED == 2) { \
-			info->operandFormat &= ~ARM_OPERAND_2; \
+			info->op2 = info->op3; \
+			info->operandFormat |= info->operandFormat >>= 8; \
+			info->operandFormat &= ~ARM_OPERAND_3; \
 		} \
 		if (info->op1.reg == ARM_PC) { \
 			info->branchType = ARM_BRANCH_INDIRECT; \