diff options
Diffstat (limited to 'src/arch/arm/isa')
| -rw-r--r-- | src/arch/arm/isa/decoder/arm.isa | 2 | ||||
| -rw-r--r-- | src/arch/arm/isa/formats/data.isa | 116 |
2 files changed, 117 insertions, 1 deletions
diff --git a/src/arch/arm/isa/decoder/arm.isa b/src/arch/arm/isa/decoder/arm.isa index 54572c041..bfb89b22a 100644 --- a/src/arch/arm/isa/decoder/arm.isa +++ b/src/arch/arm/isa/decoder/arm.isa @@ -158,7 +158,7 @@ format DataOp { 0x3: decode OPCODE_4 { 0: AddrMode2::addrMode2(False); 1: decode OPCODE_24_23 { - 0x0: WarnUnimpl::parallel_add_subtract_instructions(); + 0x0: ArmParallelAddSubtract::armParallelAddSubtract(); 0x1: decode MEDIA_OPCODE { 0x8: decode MISC_OPCODE { 0x1, 0x9: WarnUnimpl::pkhbt(); diff --git a/src/arch/arm/isa/formats/data.isa b/src/arch/arm/isa/formats/data.isa index eb36699c2..355a41038 100644 --- a/src/arch/arm/isa/formats/data.isa +++ b/src/arch/arm/isa/formats/data.isa @@ -124,6 +124,122 @@ def format ArmDataProcReg() {{ ''' }}; +def format ArmParallelAddSubtract() {{ + decode_block=''' + { + const uint32_t op1 = bits(machInst, 21, 20); + const uint32_t op2 = bits(machInst, 7, 5); + const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16); + const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12); + const IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); + if (bits(machInst, 22) == 0) { + switch (op1) { + case 0x1: + switch (op2) { + case 0x0: + return new WarnUnimplemented("sadd16", machInst); + case 0x1: + return new WarnUnimplemented("sasx", machInst); + case 0x2: + return new WarnUnimplemented("ssax", machInst); + case 0x3: + return new WarnUnimplemented("ssub16", machInst); + case 0x4: + return new WarnUnimplemented("sadd8", machInst); + case 0x7: + return new WarnUnimplemented("ssub8", machInst); + } + break; + case 0x2: + switch (op2) { + case 0x0: + return new Qadd16Reg(machInst, rd, rn, rm, 0, LSL); + case 0x1: + return new QasxReg(machInst, rd, rn, rm, 0, LSL); + case 0x2: + return new QsaxReg(machInst, rd, rn, rm, 0, LSL); + case 0x3: + return new Qsub16Reg(machInst, rd, rn, rm, 0, LSL); + case 0x4: + return new Qadd8Reg(machInst, rd, rn, rm, 0, LSL); + case 0x7: + return new Qsub8Reg(machInst, rd, rn, rm, 0, LSL); + } + break; + case 0x3: + switch (op2) { + case 0x0: + return new WarnUnimplemented("shadd16", machInst); + case 0x1: + return new WarnUnimplemented("shasx", machInst); + case 0x2: + return new WarnUnimplemented("shsax", machInst); + case 0x3: + return new WarnUnimplemented("shsub16", machInst); + case 0x4: + return new WarnUnimplemented("shadd8", machInst); + case 0x7: + return new WarnUnimplemented("shsub8", machInst); + } + break; + } + } else { + switch (op1) { + case 0x1: + switch (op2) { + case 0x0: + return new WarnUnimplemented("uadd16", machInst); + case 0x1: + return new WarnUnimplemented("uasx", machInst); + case 0x2: + return new WarnUnimplemented("usax", machInst); + case 0x3: + return new WarnUnimplemented("usub16", machInst); + case 0x4: + return new WarnUnimplemented("uadd8", machInst); + case 0x7: + return new WarnUnimplemented("usub8", machInst); + } + break; + case 0x2: + switch (op2) { + case 0x0: + return new WarnUnimplemented("uqadd16", machInst); + case 0x1: + return new WarnUnimplemented("uqasx", machInst); + case 0x2: + return new WarnUnimplemented("uqsax", machInst); + case 0x3: + return new WarnUnimplemented("uqsub16", machInst); + case 0x4: + return new WarnUnimplemented("uqadd8", machInst); + case 0x7: + return new WarnUnimplemented("uqsub8", machInst); + } + break; + case 0x3: + switch (op2) { + case 0x0: + return new WarnUnimplemented("uhadd16", machInst); + case 0x1: + return new WarnUnimplemented("uhasx", machInst); + case 0x2: + return new WarnUnimplemented("uhsax", machInst); + case 0x3: + return new WarnUnimplemented("uhsub16", machInst); + case 0x4: + return new WarnUnimplemented("uhadd8", machInst); + case 0x7: + return new WarnUnimplemented("uhsub8", machInst); + } + break; + } + } + return new Unknown(machInst); + } + ''' +}}; + def format ArmDataProcImm() {{ pclr = ''' return new %(className)ssImmPclr(machInst, %(dest)s, |