diff options
Diffstat (limited to 'src/arch/arm/isa/formats/mem.isa')
| -rw-r--r-- | src/arch/arm/isa/formats/mem.isa | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/arch/arm/isa/formats/mem.isa b/src/arch/arm/isa/formats/mem.isa index 41706c48d..5d389458c 100644 --- a/src/arch/arm/isa/formats/mem.isa +++ b/src/arch/arm/isa/formats/mem.isa @@ -255,6 +255,36 @@ def format ArmSyncMem() {{ } }}; +def format Thumb32SrsRfe() {{ + decode_block = ''' + { + if (bits(machInst, 20) == 1) { + const bool add = (bits(machInst, 24, 23) == 0x3); + // post == add + const bool wb = (bits(machInst, 21) == 1); + const IntRegIndex rn = + (IntRegIndex)(uint32_t)bits(machInst, 19, 16); + if (!add && !wb) { + return new %(rfe)s(machInst, rn, RfeOp::DecrementBefore, wb); + } else if (add && !wb) { + return new %(rfe_u)s(machInst, rn, RfeOp::IncrementAfter, wb); + } else if (!add && wb) { + return new %(rfe_w)s(machInst, rn, RfeOp::DecrementBefore, wb); + } else { + return new %(rfe_uw)s(machInst, rn, RfeOp::IncrementAfter, wb); + } + } else { + return new WarnUnimplemented("srs", machInst); + } + } + ''' % { + "rfe" : "RFE_" + loadImmClassName(False, False, False, 8), + "rfe_u" : "RFE_" + loadImmClassName(True, True, False, 8), + "rfe_w" : "RFE_" + loadImmClassName(False, False, True, 8), + "rfe_uw" : "RFE_" + loadImmClassName(True, True, True, 8) + } +}}; + def format Thumb32LdrStrDExTbh() {{ decode_block = ''' { |