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-rw-r--r--src/core/arm/dyncom/arm_dyncom_interpreter.cpp44
1 files changed, 43 insertions, 1 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
index 64335b9c2..e3a8b1f6e 100644
--- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
@@ -2369,7 +2369,25 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(smlal)(unsigned int inst, int index)
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smlalxy)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMLALXY"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(smlaw)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMLAW"); }
+
+ARM_INST_PTR INTERPRETER_TRANSLATE(smlaw)(unsigned int inst, int index)
+{
+ arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(smlad_inst));
+ smlad_inst* const inst_cream = (smlad_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->Ra = BITS(inst, 12, 15);
+ inst_cream->Rm = BITS(inst, 8, 11);
+ inst_cream->Rn = BITS(inst, 0, 3);
+ inst_cream->Rd = BITS(inst, 16, 19);
+ inst_cream->m = BIT(inst, 6);
+
+ return inst_base;
+}
ARM_INST_PTR INTERPRETER_TRANSLATE(smlald)(unsigned int inst, int index)
{
@@ -5552,7 +5570,31 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
SMLALXY_INST:
+
SMLAW_INST:
+ {
+ if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
+ smlad_inst* const inst_cream = (smlad_inst*)inst_base->component;
+
+ const u32 rm_val = RM;
+ const u32 rn_val = RN;
+ const u32 ra_val = cpu->Reg[inst_cream->Ra];
+ const bool high = (inst_cream->m == 1);
+
+ const s16 operand2 = (high) ? ((rm_val >> 16) & 0xFFFF) : (rm_val & 0xFFFF);
+ const s64 result = (s64)(s32)rn_val * (s64)(s32)operand2 + ((s64)(s32)ra_val << 16);
+
+ RD = (result & (0xFFFFFFFFFFFFFFFFLL >> 15)) >> 16;
+
+ if ((result >> 16) != (s32)RD)
+ cpu->Cpsr |= (1 << 27);
+ }
+
+ cpu->Reg[15] += GET_INST_SIZE(cpu);
+ INC_PC(sizeof(smlad_inst));
+ FETCH_INST;
+ GOTO_NEXT_INST;
+ }
SMLALD_INST:
SMLSLD_INST: