diff options
| -rw-r--r-- | src/arch/arm/system.cc | 17 | ||||
| -rw-r--r-- | src/arch/arm/system.hh | 7 |
2 files changed, 22 insertions, 2 deletions
diff --git a/src/arch/arm/system.cc b/src/arch/arm/system.cc index 1fe706079..097a87b2b 100644 --- a/src/arch/arm/system.cc +++ b/src/arch/arm/system.cc @@ -225,6 +225,23 @@ ArmSystem::highestEL(ThreadContext *tc) return FullSystem? getArmSystem(tc)->highestEL() : EL1; } +bool +ArmSystem::haveEL(ThreadContext *tc, ExceptionLevel el) +{ + switch (el) { + case EL0: + case EL1: + return true; + case EL2: + return haveVirtualization(tc); + case EL3: + return haveSecurity(tc); + default: + warn("Unimplemented Exception Level\n"); + return false; + } +} + Addr ArmSystem::resetAddr64(ThreadContext *tc) { diff --git a/src/arch/arm/system.hh b/src/arch/arm/system.hh index b81ec05f9..46103f42c 100644 --- a/src/arch/arm/system.hh +++ b/src/arch/arm/system.hh @@ -259,8 +259,11 @@ class ArmSystem : public System */ static ExceptionLevel highestEL(ThreadContext *tc); - /** Returns the reset address if the highest implemented exception level for - * the system of a specific thread context is 64 bits (ARMv8) + /** Return true if the system implements a specific exception level */ + static bool haveEL(ThreadContext *tc, ExceptionLevel el); + + /** Returns the reset address if the highest implemented exception level + * for the system of a specific thread context is 64 bits (ARMv8) */ static Addr resetAddr64(ThreadContext *tc); |