diff options
Diffstat (limited to 'src/arch/arm/isa/formats/misc.isa')
| -rw-r--r-- | src/arch/arm/isa/formats/misc.isa | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/src/arch/arm/isa/formats/misc.isa b/src/arch/arm/isa/formats/misc.isa index 4f1960b95..739741786 100644 --- a/src/arch/arm/isa/formats/misc.isa +++ b/src/arch/arm/isa/formats/misc.isa @@ -220,10 +220,22 @@ let {{ csprintf("miscreg crn:%d opc1:%d crm:%d opc2:%d %s unknown", crn, opc1, crm, opc2, isRead ? "read" : "write")); case MISCREG_IMPDEF_UNIMPL: - return new McrMrcImplDefined( - isRead ? "mrc implementation defined" : - "mcr implementation defined", - machInst, iss, MISCREG_IMPDEF_UNIMPL); + + if (miscRegInfo[miscReg][MISCREG_WARN_NOT_FAIL]) { + auto mnemonic = + csprintf("miscreg crn:%d opc1:%d crm:%d opc2:%d %s", + crn, opc1, crm, opc2, isRead ? "read" : "write"); + + return new WarnUnimplemented( + isRead ? "mrc implementation defined" : + "mcr implementation defined", + machInst, mnemonic + " treated as NOP"); + } else { + return new McrMrcImplDefined( + isRead ? "mrc implementation defined" : + "mcr implementation defined", + machInst, iss, MISCREG_IMPDEF_UNIMPL); + } case MISCREG_CP15ISB: return new Isb(machInst, iss); case MISCREG_CP15DSB: |