diff options
Diffstat (limited to 'src/arch/arm/ArmISA.py')
| -rw-r--r-- | src/arch/arm/ArmISA.py | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/arch/arm/ArmISA.py b/src/arch/arm/ArmISA.py index 7956570bd..78dd04330 100644 --- a/src/arch/arm/ArmISA.py +++ b/src/arch/arm/ArmISA.py @@ -1,4 +1,4 @@ -# Copyright (c) 2012-2013, 2015-2016 ARM Limited +# Copyright (c) 2012-2013, 2015-2016, 2018 ARM Limited # All rights reserved. # # The license below extends only to copyright in the software and shall @@ -111,3 +111,9 @@ class ArmISA(SimObject): # Reserved for future expansion id_aa64mmfr1_el1 = Param.UInt64(0x0000000000000000, "AArch64 Memory Model Feature Register 1") + + # Any access (read/write) to an unimplemented + # Implementation Defined registers is not causing an Undefined Instruction. + # It is rather executed as a NOP. + impdef_nop = Param.Bool(False, + "Any access to a MISCREG_IMPDEF_UNIMPL register is executed as NOP") |