dyncom: Implement UQADD8, UQADD16, UQSUB8, UQSUB16, UQASX, and UQSAX.

3 files changed, 102 insertions, 12 deletions

diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
index 9b355fc6e..7306794fe 100644
--- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
@@ -3249,12 +3249,44 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(blx_1_thumb)(unsigned int tinst, int index)
         return inst_base;
 }
 
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd16)(unsigned int inst, int index)   { UNIMPLEMENTED_INSTRUCTION("UQADD16"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd8)(unsigned int inst, int index)    { UNIMPLEMENTED_INSTRUCTION("UQADD8"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqaddsubx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQADDSUBX"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub16)(unsigned int inst, int index)   { UNIMPLEMENTED_INSTRUCTION("UQSUB16"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub8)(unsigned int inst, int index)    { UNIMPLEMENTED_INSTRUCTION("UQSUB8"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqsubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQSUBADDX"); }
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd8)(unsigned int inst, int index)
+{
+        arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst));
+        generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
+
+        inst_base->cond     = BITS(inst, 28, 31);
+        inst_base->idx      = index;
+        inst_base->br       = NON_BRANCH;
+        inst_base->load_r15 = 0;
+
+        inst_cream->Rm  = BITS(inst, 0, 3);
+        inst_cream->Rn  = BITS(inst, 16, 19);
+        inst_cream->Rd  = BITS(inst, 12, 15);
+        inst_cream->op1 = BITS(inst, 20, 21);
+        inst_cream->op2 = BITS(inst, 5, 7);
+
+        return inst_base;
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd16)(unsigned int inst, int index)
+{
+        return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqaddsubx)(unsigned int inst, int index)
+{
+        return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub8)(unsigned int inst, int index)
+{
+        return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub16)(unsigned int inst, int index)
+{
+        return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqsubaddx)(unsigned int inst, int index)
+{
+        return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
 ARM_INST_PTR INTERPRETER_TRANSLATE(usad8)(unsigned int inst, int index)     { UNIMPLEMENTED_INSTRUCTION("USAD8"); }
 ARM_INST_PTR INTERPRETER_TRANSLATE(usada8)(unsigned int inst, int index)    { UNIMPLEMENTED_INSTRUCTION("USADA8"); }
 ARM_INST_PTR INTERPRETER_TRANSLATE(usat)(unsigned int inst, int index)      { UNIMPLEMENTED_INSTRUCTION("USAT"); }
@@ -6876,12 +6908,69 @@ unsigned InterpreterMainLoop(ARMul_State* state)
                 goto DISPATCH;
         }
 
-        UQADD16_INST:
         UQADD8_INST:
+        UQADD16_INST:
         UQADDSUBX_INST:
-        UQSUB16_INST:
         UQSUB8_INST:
+        UQSUB16_INST:
         UQSUBADDX_INST:
+        {
+                INC_ICOUNTER;
+
+                if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
+                        generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
+
+                        const u8 op2 = inst_cream->op2;
+                        const u32 rm_val = RM;
+                        const u32 rn_val = RN;
+
+                        u16 lo_val = 0;
+                        u16 hi_val = 0;
+                        
+                        // UQADD16
+                        if (op2 == 0x00) {
+                                lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, rm_val & 0xFFFF);
+                                hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+                        }
+                        // UQASX
+                        else if (op2 == 0x01) {
+                                lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+                                hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
+                        }
+                        // UQSAX
+                        else if (op2 == 0x02) {
+                                lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+                                hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
+                        }
+                        // UQSUB16
+                        else if (op2 == 0x03) {
+                                lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, rm_val & 0xFFFF);
+                                hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+                        }
+                        // UQADD8
+                        else if (op2 == 0x04) {
+                                lo_val = ARMul_UnsignedSaturatedAdd8(rn_val, rm_val) |
+                                         ARMul_UnsignedSaturatedAdd8(rn_val >> 8,  rm_val >> 8) << 8;
+                                hi_val = ARMul_UnsignedSaturatedAdd8(rn_val >> 16, rm_val >> 16) |
+                                         ARMul_UnsignedSaturatedAdd8(rn_val >> 24, rm_val >> 24) << 8;
+                        }
+                        // UQSUB8
+                        else {
+                                lo_val = ARMul_UnsignedSaturatedSub8(rn_val, rm_val) |
+                                         ARMul_UnsignedSaturatedSub8(rn_val >> 8,  rm_val >> 8) << 8;
+                                hi_val = ARMul_UnsignedSaturatedSub8(rn_val >> 16, rm_val >> 16) |
+                                         ARMul_UnsignedSaturatedSub8(rn_val >> 24, rm_val >> 24) << 8;
+                        }
+                        
+                        RD = ((lo_val & 0xFFFF) | hi_val << 16);
+                }
+
+                cpu->Reg[15] += GET_INST_SIZE(cpu);
+                INC_PC(sizeof(generic_arm_inst));
+                FETCH_INST;
+                GOTO_NEXT_INST;
+        }
+
         USAD8_INST:
         USADA8_INST:
         USAT_INST:
diff --git a/src/core/arm/skyeye_common/armdefs.h b/src/core/arm/skyeye_common/armdefs.h
index 34eb5aaf7..5b6e5f8cd 100644
--- a/src/core/arm/skyeye_common/armdefs.h
+++ b/src/core/arm/skyeye_common/armdefs.h
@@ -790,6 +790,11 @@ extern void ARMul_FixSPSR(ARMul_State*, ARMword, ARMword);
 extern void ARMul_ConsolePrint(ARMul_State*, const char*, ...);
 extern void ARMul_SelectProcessor(ARMul_State*, unsigned);
 
+extern u8 ARMul_UnsignedSaturatedAdd8(u8, u8);
+extern u16 ARMul_UnsignedSaturatedAdd16(u16, u16);
+extern u8 ARMul_UnsignedSaturatedSub8(u8, u8);
+extern u16 ARMul_UnsignedSaturatedSub16(u16, u16);
+
 #define DIFF_LOG 0
 #define SAVE_LOG 0
 
diff --git a/src/core/arm/skyeye_common/armemu.h b/src/core/arm/skyeye_common/armemu.h
index 0b87dd39c..3ea14b5a3 100644
--- a/src/core/arm/skyeye_common/armemu.h
+++ b/src/core/arm/skyeye_common/armemu.h
@@ -603,10 +603,6 @@ extern void ARMul_MSRCpsr (ARMul_State *, ARMword, ARMword);
 extern void ARMul_SubOverflow (ARMul_State *, ARMword, ARMword, ARMword);
 extern void ARMul_AddOverflow (ARMul_State *, ARMword, ARMword, ARMword);
 extern void ARMul_AddOverflowQ(ARMul_State*, ARMword, ARMword);
-extern u8 ARMul_UnsignedSaturatedAdd8(u8, u8);
-extern u16 ARMul_UnsignedSaturatedAdd16(u16, u16);
-extern u8 ARMul_UnsignedSaturatedSub8(u8, u8);
-extern u16 ARMul_UnsignedSaturatedSub16(u16, u16);
 extern void ARMul_SubCarry (ARMul_State *, ARMword, ARMword, ARMword);
 extern void ARMul_AddCarry (ARMul_State *, ARMword, ARMword, ARMword);
 extern tdstate ARMul_ThumbDecode (ARMul_State *, ARMword, ARMword, ARMword *);