diff options
Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/arm/dyncom/arm_dyncom_interpreter.cpp | 61 |
1 files changed, 58 insertions, 3 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp index f2ea0e9dd..7ba82503d 100644 --- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp +++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp @@ -2766,7 +2766,29 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(sxtab)(unsigned int inst, int index){ return inst_base; } -ARM_INST_PTR INTERPRETER_TRANSLATE(sxtab16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SXTAB16"); } + +ARM_INST_PTR INTERPRETER_TRANSLATE(sxtab16)(unsigned int inst, int index) +{ + arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(sxtab_inst)); + sxtab_inst* const inst_cream = (sxtab_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->rotate = BITS(inst, 10, 11); + + return inst_base; +} +ARM_INST_PTR INTERPRETER_TRANSLATE(sxtb16)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(sxtab16)(inst, index); +} + ARM_INST_PTR INTERPRETER_TRANSLATE(sxtah)(unsigned int inst, int index){ LOG_WARNING(Core_ARM11, "SXTAH untested"); arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(sxtah_inst)); @@ -2784,7 +2806,7 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(sxtah)(unsigned int inst, int index){ return inst_base; } -ARM_INST_PTR INTERPRETER_TRANSLATE(sxtb16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SXTB16"); } + ARM_INST_PTR INTERPRETER_TRANSLATE(teq)(unsigned int inst, int index) { arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(teq_inst)); @@ -5896,7 +5918,40 @@ unsigned InterpreterMainLoop(ARMul_State* state) { FETCH_INST; GOTO_NEXT_INST; } + SXTAB16_INST: + SXTB16_INST: + { + if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { + sxtab_inst* const inst_cream = (sxtab_inst*)inst_base->component; + + const u8 rotation = inst_cream->rotate * 8; + u32 rm_val = RM; + u32 rn_val = RN; + + if (rotation) + rm_val = ((rm_val << (32 - rotation)) | (rm_val >> rotation)); + + // SXTB16 + if (inst_cream->Rn == 15) { + u32 lo = (u32)(s8)rm_val; + u32 hi = (u32)(s8)(rm_val >> 16); + RD = (lo | (hi << 16)); + } + // SXTAB16 + else { + u32 lo = (rn_val & 0xFFFF) + (u32)(s8)(rm_val & 0xFF); + u32 hi = ((rn_val >> 16) & 0xFFFF) + (u32)(s8)((rm_val >> 16) & 0xFF); + RD = (lo | (hi << 16)); + } + } + + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(sxtab_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } + SXTAH_INST: { sxtah_inst *inst_cream = (sxtah_inst *)inst_base->component; @@ -5915,7 +5970,7 @@ unsigned InterpreterMainLoop(ARMul_State* state) { FETCH_INST; GOTO_NEXT_INST; } - SXTB16_INST: + TEQ_INST: { if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { |