diff options
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index c41cbb7278..424dc52848 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -2328,7 +2328,10 @@ void helper_invlpg(target_ulong addr) void helper_rdtsc(void) { uint64_t val; - + + if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { + raise_exception(EXCP0D_GPF); + } val = cpu_get_tsc(env); EAX = (uint32_t)(val); EDX = (uint32_t)(val >> 32); |