diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/arch/arm/isa/decoder/thumb.isa | 2 | ||||
-rw-r--r-- | src/arch/arm/isa/formats/data.isa | 260 |
2 files changed, 261 insertions, 1 deletions
diff --git a/src/arch/arm/isa/decoder/thumb.isa b/src/arch/arm/isa/decoder/thumb.isa index 781e467cf..b76599232 100644 --- a/src/arch/arm/isa/decoder/thumb.isa +++ b/src/arch/arm/isa/decoder/thumb.isa @@ -179,7 +179,7 @@ 0x1: decode HTOPCODE_8_7 { 0x2: Thumb32MulMulAccAndAbsDiff::thumb32MulMulAccAndAbsDiff(); 0x3: Thumb32LongMulMulAccAndDiv::thumb32LongMulMulAccAndDiv(); - default: WarnUnimpl::Data_processing_register(); + default: Thumb32DataProcReg::thumb32DataProcReg(); } default: decode HTOPCODE_9_8 { 0x2: decode LTOPCODE_4 { diff --git a/src/arch/arm/isa/formats/data.isa b/src/arch/arm/isa/formats/data.isa index 217f1364b..dc78a5770 100644 --- a/src/arch/arm/isa/formats/data.isa +++ b/src/arch/arm/isa/formats/data.isa @@ -460,6 +460,266 @@ def format ArmSatAddSub() {{ ''' }}; +def format Thumb32DataProcReg() {{ + decode_block = ''' + { + const uint32_t op1 = bits(machInst, 23, 20); + const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16); + const uint32_t op2 = bits(machInst, 7, 4); + if (bits(op1, 3) != 1) { + if (op2 == 0) { + IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 11, 8); + IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); + switch (bits(op1, 2, 0)) { + case 0x0: + return new MovRegReg(machInst, rd, + INTREG_ZERO, rn, rm, LSL); + case 0x1: + return new MovRegRegCc(machInst, rd, + INTREG_ZERO, rn, rm, LSL); + case 0x2: + return new MovRegReg(machInst, rd, + INTREG_ZERO, rn, rm, LSR); + case 0x3: + return new MovRegRegCc(machInst, rd, + INTREG_ZERO, rn, rm, LSR); + case 0x4: + return new MovRegReg(machInst, rd, + INTREG_ZERO, rn, rm, ASR); + case 0x5: + return new MovRegRegCc(machInst, rd, + INTREG_ZERO, rn, rm, ASR); + case 0x6: + return new MovRegReg(machInst, rd, + INTREG_ZERO, rn, rm, ROR); + case 0x7: + return new MovRegRegCc(machInst, rd, + INTREG_ZERO, rn, rm, ROR); + } + } + switch (bits(op1, 2, 0)) { + case 0x0: + if (rn == 0xf) { + return new WarnUnimplemented("sxth", machInst); + } else { + return new WarnUnimplemented("sxtah", machInst); + } + case 0x1: + if (rn == 0xf) { + return new WarnUnimplemented("uxth", machInst); + } else { + return new WarnUnimplemented("uxtah", machInst); + } + case 0x2: + if (rn == 0xf) { + return new WarnUnimplemented("sxtb16", machInst); + } else { + return new WarnUnimplemented("sxtab16", machInst); + } + case 0x3: + if (rn == 0xf) { + return new WarnUnimplemented("uxtb16", machInst); + } else { + return new WarnUnimplemented("uxtab16", machInst); + } + case 0x4: + if (rn == 0xf) { + return new WarnUnimplemented("sxtb", machInst); + } else { + return new WarnUnimplemented("sxtab", machInst); + } + case 0x5: + if (rn == 0xf) { + return new WarnUnimplemented("uxtb", machInst); + } else { + return new WarnUnimplemented("uxtab", machInst); + } + default: + return new Unknown(machInst); + } + } else { + if (bits(op2, 3) == 0) { + if (bits(op2, 2) == 0x0) { + const uint32_t op1 = bits(machInst, 22, 20); + const uint32_t op2 = bits(machInst, 5, 4); + switch (op2) { + case 0x0: + switch (op1) { + case 0x1: + return new WarnUnimplemented("sadd16", machInst); + case 0x2: + return new WarnUnimplemented("sasx", machInst); + case 0x6: + return new WarnUnimplemented("ssax", machInst); + case 0x5: + return new WarnUnimplemented("ssub16", machInst); + case 0x0: + return new WarnUnimplemented("sadd8", machInst); + case 0x4: + return new WarnUnimplemented("ssub8", machInst); + } + break; + case 0x1: + { + IntRegIndex rn = + (IntRegIndex)(uint32_t)bits(machInst, 19, 16); + IntRegIndex rd = + (IntRegIndex)(uint32_t)bits(machInst, 11, 8); + IntRegIndex rm = + (IntRegIndex)(uint32_t)bits(machInst, 3, 0); + switch (op1) { + case 0x1: + return new Qadd16Reg(machInst, rd, + rn, rm, 0, LSL); + case 0x2: + return new QasxReg(machInst, rd, + rn, rm, 0, LSL); + case 0x6: + return new QsaxReg(machInst, rd, + rn, rm, 0, LSL); + case 0x5: + return new Qsub16Reg(machInst, rd, + rn, rm, 0, LSL); + case 0x0: + return new Qsub8Reg(machInst, rd, + rn, rm, 0, LSL); + case 0x4: + return new Qsub8Reg(machInst, rd, + rn, rm, 0, LSL); + } + } + break; + case 0x2: + switch (op1) { + case 0x1: + return new WarnUnimplemented("shadd16", machInst); + case 0x2: + return new WarnUnimplemented("shasx", machInst); + case 0x6: + return new WarnUnimplemented("shsax", machInst); + case 0x5: + return new WarnUnimplemented("shsub16", machInst); + case 0x0: + return new WarnUnimplemented("shadd8", machInst); + case 0x4: + return new WarnUnimplemented("shsub8", machInst); + } + break; + } + } else { + const uint32_t op1 = bits(machInst, 22, 20); + const uint32_t op2 = bits(machInst, 5, 4); + switch (op2) { + case 0x0: + switch (op1) { + case 0x1: + return new WarnUnimplemented("uadd16", machInst); + case 0x2: + return new WarnUnimplemented("uasx", machInst); + case 0x6: + return new WarnUnimplemented("usax", machInst); + case 0x5: + return new WarnUnimplemented("usub16", machInst); + case 0x0: + return new WarnUnimplemented("uadd8", machInst); + case 0x4: + return new WarnUnimplemented("usub8", machInst); + } + break; + case 0x1: + switch (op1) { + case 0x1: + return new WarnUnimplemented("uqadd16", machInst); + case 0x2: + return new WarnUnimplemented("uqasx", machInst); + case 0x6: + return new WarnUnimplemented("uqsax", machInst); + case 0x5: + return new WarnUnimplemented("uqsub16", machInst); + case 0x0: + return new WarnUnimplemented("uqadd8", machInst); + case 0x4: + return new WarnUnimplemented("uqsub8", machInst); + } + break; + case 0x2: + switch (op1) { + case 0x1: + return new WarnUnimplemented("uhadd16", machInst); + case 0x2: + return new WarnUnimplemented("uhasx", machInst); + case 0x6: + return new WarnUnimplemented("uhsax", machInst); + case 0x5: + return new WarnUnimplemented("uhsub16", machInst); + case 0x0: + return new WarnUnimplemented("uhadd8", machInst); + case 0x4: + return new WarnUnimplemented("uhsub8", machInst); + } + break; + } + } + } else if (bits(op1, 3, 2) == 0x2 && bits(op2, 3, 2) == 0x2) { + const uint32_t op1 = bits(machInst, 21, 20); + const uint32_t op2 = bits(machInst, 5, 4); + switch (op1) { + case 0x0: + { + IntRegIndex rd = + (IntRegIndex)(uint32_t)bits(machInst, 11, 8); + IntRegIndex rm = + (IntRegIndex)(uint32_t)bits(machInst, 3, 0); + switch (op2) { + case 0x0: + return new QaddRegCc(machInst, rd, + rm, rn, 0, LSL); + case 0x1: + return new QdaddRegCc(machInst, rd, + rm, rn, 0, LSL); + case 0x2: + return new QsubRegCc(machInst, rd, + rm, rn, 0, LSL); + case 0x3: + return new QdsubRegCc(machInst, rd, + rm, rn, 0, LSL); + } + } + break; + case 0x1: + { + IntRegIndex rd = + (IntRegIndex)(uint32_t)bits(machInst, 11, 8); + IntRegIndex rm = rn; + switch (op2) { + case 0x0: + return new Rev(machInst, rd, rm); + case 0x1: + return new Rev16(machInst, rd, rm); + case 0x2: + return new WarnUnimplemented("rbit", machInst); + case 0x3: + return new Revsh(machInst, rd, rm); + } + } + break; + case 0x2: + if (op2 == 0) { + return new WarnUnimplemented("sel", machInst); + } + break; + case 0x3: + if (op2 == 0) { + return new WarnUnimplemented("clz", machInst); + } + } + } + return new Unknown(machInst); + } + } + ''' +}}; + def format Thumb16ShiftAddSubMoveCmp() {{ decode_block = ''' { |