diff options
| -rw-r--r-- | src/target/armv8.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/target/armv8.c b/src/target/armv8.c index b622dc9..1767470 100644 --- a/src/target/armv8.c +++ b/src/target/armv8.c @@ -315,6 +315,11 @@ static int armv8_read_reg(struct armv8_common *armv8, int regnum, uint64_t *regv value_64 = value; break; case ARMV8_ELR_EL1: + if (curel < SYSTEM_CUREL_EL1) { + LOG_DEBUG("ELR_EL1 not accessible in EL%u", curel); + retval = ERROR_FAIL; + break; + } retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_ELR_EL1, 0), &value_64); break; @@ -463,6 +468,11 @@ static int armv8_write_reg(struct armv8_common *armv8, int regnum, uint64_t valu break; /* registers clobbered by taking exception in debug state */ case ARMV8_ELR_EL1: + if (curel < SYSTEM_CUREL_EL1) { + LOG_DEBUG("ELR_EL1 not accessible in EL%u", curel); + retval = ERROR_FAIL; + break; + } retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MSR_GP(SYSTEM_ELR_EL1, 0), value_64); break; |