diff options
Diffstat (limited to 'target-arm/op_helper.c')
| -rw-r--r-- | target-arm/op_helper.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c index cfdbc8da94..538887ce0c 100644 --- a/target-arm/op_helper.c +++ b/target-arm/op_helper.c @@ -468,6 +468,14 @@ void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val) uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode) { + if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_SYS) { + /* SRS instruction is UNPREDICTABLE from System mode; we UNDEF. + * Other UNPREDICTABLE and UNDEF cases were caught at translate time. + */ + raise_exception(env, EXCP_UDEF, syn_uncategorized(), + exception_target_el(env)); + } + if ((env->uncached_cpsr & CPSR_M) == mode) { return env->regs[13]; } else { |