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author | Lioncash <mathew1800@gmail.com> | 2014-12-22 07:09:42 +0100 |
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committer | Lioncash <mathew1800@gmail.com> | 2014-12-22 07:09:42 +0100 |
commit | 97f3e884d2543b293dba548791151b39469983ab (patch) | |
tree | ff2248a3cfc0c1ebfbfc2fa2424be1ab95b7f391 /src/core/arm/dyncom/arm_dyncom_interpreter.cpp | |
parent | Merge pull request #322 from chinhodado/master (diff) | |
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Diffstat (limited to 'src/core/arm/dyncom/arm_dyncom_interpreter.cpp')
-rw-r--r-- | src/core/arm/dyncom/arm_dyncom_interpreter.cpp | 94 |
1 files changed, 87 insertions, 7 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp index ae407585e..460001b1a 100644 --- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp +++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp @@ -2390,15 +2390,41 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(pld)(unsigned int inst, int index) return inst_base; } ARM_INST_PTR INTERPRETER_TRANSLATE(qadd)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QADD"); } -ARM_INST_PTR INTERPRETER_TRANSLATE(qadd16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QADD16"); } ARM_INST_PTR INTERPRETER_TRANSLATE(qadd8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QADD8"); } -ARM_INST_PTR INTERPRETER_TRANSLATE(qaddsubx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QADDSUBX"); } +ARM_INST_PTR INTERPRETER_TRANSLATE(qadd16)(unsigned int inst, int index) +{ + arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst)); + generic_arm_inst* const inst_cream = (generic_arm_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->op1 = BITS(inst, 20, 21); + inst_cream->op2 = BITS(inst, 5, 7); + + return inst_base; +} +ARM_INST_PTR INTERPRETER_TRANSLATE(qaddsubx)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(qadd16)(inst, index); +} ARM_INST_PTR INTERPRETER_TRANSLATE(qdadd)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QDADD"); } ARM_INST_PTR INTERPRETER_TRANSLATE(qdsub)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QDSUB"); } ARM_INST_PTR INTERPRETER_TRANSLATE(qsub)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QSUB"); } -ARM_INST_PTR INTERPRETER_TRANSLATE(qsub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QSUB16"); } ARM_INST_PTR INTERPRETER_TRANSLATE(qsub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QSUB8"); } -ARM_INST_PTR INTERPRETER_TRANSLATE(qsubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("QSUBADDX"); } +ARM_INST_PTR INTERPRETER_TRANSLATE(qsub16)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(qadd16)(inst, index); +} +ARM_INST_PTR INTERPRETER_TRANSLATE(qsubaddx)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(qadd16)(inst, index); +} ARM_INST_PTR INTERPRETER_TRANSLATE(rev)(unsigned int inst, int index) { arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(rev_inst)); @@ -5561,15 +5587,69 @@ unsigned InterpreterMainLoop(ARMul_State* state) GOTO_NEXT_INST; } QADD_INST: - QADD16_INST: QADD8_INST: + + QADD16_INST: QADDSUBX_INST: + QSUB16_INST: + QSUBADDX_INST: + { + INC_ICOUNTER; + if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { + generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component; + const s16 rm_lo = (RM & 0xFFFF); + const s16 rm_hi = ((RM >> 16) & 0xFFFF); + const s16 rn_lo = (RN & 0xFFFF); + const s16 rn_hi = ((RN >> 16) & 0xFFFF); + const u8 op2 = inst_cream->op2; + + s32 lo_result = 0; + s32 hi_result = 0; + + // QADD16 + if (op2 == 0x00) { + lo_result = (rn_lo + rm_lo); + hi_result = (rn_hi + rm_hi); + } + // QASX + else if (op2 == 0x01) { + lo_result = (rn_lo - rm_hi); + hi_result = (rn_hi + rm_lo); + } + // QSAX + else if (op2 == 0x02) { + lo_result = (rn_lo + rm_hi); + hi_result = (rn_hi - rm_lo); + } + // QSUB16 + else if (op2 == 0x03) { + lo_result = (rn_lo - rm_lo); + hi_result = (rn_hi - rm_hi); + } + + if (lo_result > 0x7FFF) + lo_result = 0x7FFF; + else if (lo_result < -0x8000) + lo_result = -0x8000; + + if (hi_result > 0x7FFF) + hi_result = 0x7FFF; + else if (hi_result < -0x8000) + hi_result = -0x8000; + + RD = (lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16); + } + + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(generic_arm_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } + QDADD_INST: QDSUB_INST: QSUB_INST: - QSUB16_INST: QSUB8_INST: - QSUBADDX_INST: REV_INST: { INC_ICOUNTER; |