Merge pull request #371 from lioncash/vfp

vfp: Implement VMOVBRRSS

src/core/arm/skyeye_common/vfp/vfp.cpp

@@ -141,7 +141,7 @@ unsigned VFPMRRC(ARMul_State* state, unsigned type, u32 instr, u32* value1, u32*
     {
         if (CoProc == 10 && (OPC_1 & 0xD) == 1)
         {
-            VFP_DEBUG_UNIMPLEMENTED(VMOVBRRSS);
+            VMOVBRRSS(state, BIT(20), Rt, Rt2, BIT(5)<<4|CRm, value1, value2);
             return ARMul_DONE;
         }
 
@@ -175,7 +175,7 @@ unsigned VFPMCRR(ARMul_State* state, unsigned type, u32 instr, u32 value1, u32 v
     {
         if (CoProc == 10 && (OPC_1 & 0xD) == 1)
         {
-            VFP_DEBUG_UNIMPLEMENTED(VMOVBRRSS);
+            VMOVBRRSS(state, BIT(20), Rt, Rt2, BIT(5)<<4|CRm, &value1, &value2);
             return ARMul_DONE;
         }
 
@@ -504,6 +504,22 @@ void VMOVBRRD(ARMul_State* state, ARMword to_arm, ARMword t, ARMword t2, ARMword
         state->ExtReg[n*2] = *value1;
     }
 }
+void VMOVBRRSS(ARMul_State* state, ARMword to_arm, ARMword t, ARMword t2, ARMword n, ARMword* value1, ARMword* value2)
+{
+    DBG("VMOV(BRRSS) :\n");
+    if (to_arm)
+    {
+        DBG("\tr[%d-%d] <= s[%d-%d]=[%x-%x]\n", t2, t, n+1, n, state->ExtReg[n+1], state->ExtReg[n]);
+        *value1 = state->ExtReg[n+0];
+        *value2 = state->ExtReg[n+1];
+    }
+    else
+    {
+        DBG("\ts[%d-%d] <= r[%d-%d]=[%x-%x]\n", n+1, n, t2, t, *value2, *value1);
+        state->ExtReg[n+0] = *value1;
+        state->ExtReg[n+1] = *value2;
+    }
+}
 
 /* ----------- MCR ------------ */
 void VMSR(ARMul_State* state, ARMword reg, ARMword Rt)

src/core/arm/skyeye_common/vfp/vfp.h

@@ -97,6 +97,7 @@ u32 vfp_double_cpdo(ARMul_State* state, u32 inst, u32 fpscr);
 void VMRS(ARMul_State * state, ARMword reg, ARMword Rt, ARMword *value);
 void VMOVBRS(ARMul_State * state, ARMword to_arm, ARMword t, ARMword n, ARMword *value);
 void VMOVBRRD(ARMul_State * state, ARMword to_arm, ARMword t, ARMword t2, ARMword n, ARMword *value1, ARMword *value2);
+void VMOVBRRSS(ARMul_State* state, ARMword to_arm, ARMword t, ARMword t2, ARMword n, ARMword* value1, ARMword* value2);
 void VMOVI(ARMul_State * state, ARMword single, ARMword d, ARMword imm);
 void VMOVR(ARMul_State * state, ARMword single, ARMword d, ARMword imm);
 /* MCR */

src/core/arm/skyeye_common/vfp/vfpinstr.cpp

@@ -2712,9 +2712,10 @@ VMOVBRRSS_INST:
 	if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
 		CHECK_VFP_ENABLED;
 
-		vmovbrrss_inst *inst_cream = (vmovbrrss_inst *)inst_base->component;
+		vmovbrrss_inst* const inst_cream = (vmovbrrss_inst*)inst_base->component;
 
-		VFP_DEBUG_UNIMPLEMENTED(VMOVBRRSS);
+		VMOVBRRSS(cpu, inst_cream->to_arm, inst_cream->t, inst_cream->t2, inst_cream->m,
+		         &cpu->Reg[inst_cream->t], &cpu->Reg[inst_cream->t2]);
 	}
 	cpu->Reg[15] += GET_INST_SIZE(cpu);
 	INC_PC(sizeof(vmovbrrss_inst));
@@ -2729,15 +2730,29 @@ DYNCOM_FILL_ACTION(vmovbrrss),
 int DYNCOM_TAG(vmovbrrss)(cpu_t *cpu, addr_t pc, uint32_t instr, tag_t *tag, addr_t *new_pc, addr_t *next_pc)
 {
 	int instr_size = INSTR_SIZE;
-	DBG("\t\tin %s instruction is not implemented.\n", __FUNCTION__);
+
-	arm_tag_trap(cpu, pc, instr, tag, new_pc, next_pc);
+	arm_tag_continue(cpu, pc, instr, tag, new_pc, next_pc);
+	if (instr >> 28 != 0xE)
+		*tag |= TAG_CONDITIONAL;
+
 	return instr_size;
 }
 #endif
 #ifdef VFP_DYNCOM_TRANS
-int DYNCOM_TRANS(vmovbrrss)(cpu_t *cpu, uint32_t instr, BasicBlock *bb, addr_t pc){
+int DYNCOM_TRANS(vmovbrrss)(cpu_t *cpu, uint32_t instr, BasicBlock *bb, addr_t pc)
-	DBG("\t\tin %s instruction is not implemented.\n", __FUNCTION__);
+{
-	arch_arm_undef(cpu, bb, instr);
+	int to_arm   = BIT(20) == 1;
+	int t        = BITS(12, 15);
+	int t2       = BITS(16, 19);
+	int n        = BIT(5)<<4 | BITS(0, 3);
+	if (to_arm) {
+		LET(t, IBITCAST32(FR32(n + 0)));
+		LET(t2, IBITCAST32(FR32(n + 1)));
+	}
+	else {
+		LETFPS(n + 0, FPBITCAST32(R(t)));
+		LETFPS(n + 1, FPBITCAST32(R(t2)));
+	}
 	return No_exp;
 }
 #endif