diff options
| -rw-r--r-- | src/core/arm/dyncom/arm_dyncom_interpreter.cpp | 44 |
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: |