diff options
Diffstat (limited to 'src/core/arm')
| -rw-r--r-- | src/core/arm/dyncom/arm_dyncom_interpreter.cpp | 63 |
1 files changed, 61 insertions, 2 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp index a66560af2..cecb81237 100644 --- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp +++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp @@ -2551,7 +2551,22 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(ssat)(unsigned int inst, int index) return inst_base; } -ARM_INST_PTR INTERPRETER_TRANSLATE(ssat16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSAT16"); } +ARM_INST_PTR INTERPRETER_TRANSLATE(ssat16)(unsigned int inst, int index) +{ + arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(ssat_inst)); + ssat_inst* const inst_cream = (ssat_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->Rn = BITS(inst, 0, 3); + inst_cream->Rd = BITS(inst, 12, 15); + inst_cream->sat_imm = BITS(inst, 16, 19); + + return inst_base; +} ARM_INST_PTR INTERPRETER_TRANSLATE(ssub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSUB8"); } ARM_INST_PTR INTERPRETER_TRANSLATE(ssub16)(unsigned int inst, int index) { @@ -3157,7 +3172,10 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(usat)(unsigned int inst, int index) { return INTERPRETER_TRANSLATE(ssat)(inst, index); } -ARM_INST_PTR INTERPRETER_TRANSLATE(usat16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USAT16"); } +ARM_INST_PTR INTERPRETER_TRANSLATE(usat16)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(ssat16)(inst, index); +} ARM_INST_PTR INTERPRETER_TRANSLATE(usub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USUB16"); } ARM_INST_PTR INTERPRETER_TRANSLATE(usub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USUB8"); } ARM_INST_PTR INTERPRETER_TRANSLATE(usubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USUBADDX"); } @@ -5575,6 +5593,26 @@ unsigned InterpreterMainLoop(ARMul_State* state) { } SSAT16_INST: + { + if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { + ssat_inst* const inst_cream = (ssat_inst*)inst_base->component; + const u8 saturate_to = inst_cream->sat_imm; + + bool sat1 = false; + bool sat2 = false; + + RD = (ARMul_SignedSatQ((s16)RN, saturate_to, &sat1) & 0xFFFF) | + ARMul_SignedSatQ((s32)RN >> 16, saturate_to, &sat2) << 16; + + if (sat1 || sat2) + cpu->Cpsr |= (1 << 27); + } + + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(ssat_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } SSUB8_INST: STC_INST: { @@ -6355,6 +6393,27 @@ unsigned InterpreterMainLoop(ARMul_State* state) { } USAT16_INST: + { + if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { + ssat_inst* const inst_cream = (ssat_inst*)inst_base->component; + const u8 saturate_to = inst_cream->sat_imm; + + bool sat1 = false; + bool sat2 = false; + + RD = (ARMul_UnsignedSatQ((s16)RN, saturate_to, &sat1) & 0xFFFF) | + ARMul_UnsignedSatQ((s32)RN >> 16, saturate_to, &sat2) << 16; + + if (sat1 || sat2) + cpu->Cpsr |= (1 << 27); + } + + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(ssat_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } + USUB16_INST: USUB8_INST: USUBADDX_INST: |