diff options
Diffstat (limited to 'src/arch/alpha/isa/decoder.isa')
| -rw-r--r-- | src/arch/alpha/isa/decoder.isa | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/arch/alpha/isa/decoder.isa b/src/arch/alpha/isa/decoder.isa index 93b941d72..852f483e0 100644 --- a/src/arch/alpha/isa/decoder.isa +++ b/src/arch/alpha/isa/decoder.isa @@ -745,7 +745,13 @@ decode OPCODE default Unknown::unknown() { 0: OpcdecFault::hw_mfpr(); format HwMoveIPR { 1: hw_mfpr({{ - Ra = xc->readMiscRegWithEffect(ipr_index, fault); + int miscRegIndex = IprToMiscRegIndex[ipr_index]; + if(miscRegIndex < 0 || + (miscRegIndex >= MinWriteOnlyIpr && + miscRegIndex <= MaxWriteOnlyIpr)) + fault = new UnimplementedOpcodeFault; + else + Ra = xc->readMiscRegWithEffect(ipr_index, fault); }}, IsIprAccess); } } @@ -754,7 +760,13 @@ decode OPCODE default Unknown::unknown() { 0: OpcdecFault::hw_mtpr(); format HwMoveIPR { 1: hw_mtpr({{ - xc->setMiscRegWithEffect(ipr_index, Ra); + int miscRegIndex = IprToMiscRegIndex[ipr_index]; + if(miscRegIndex < 0 || + (miscRegIndex >= MinReadOnlyIpr && + miscRegIndex <= MaxWriteOnlyIpr)) + fault = new UnimplementedOpcodeFault; + else + xc->setMiscRegWithEffect(ipr_index, Ra); if (traceData) { traceData->setData(Ra); } }}, IsIprAccess); } |