diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2014-02-20 10:35:51 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-02-20 10:35:51 +0000 |
| commit | 99f678a679857d83b9709127b0f047551d7e3c45 (patch) | |
| tree | e80ef7fbb30cb547be519ce7e03240af44c6c6ac /target-arm/helper.c | |
| parent | 76e3e1bcaefe0da394f328854cb72f9449f23732 (diff) | |
target-arm: Restrict check_ap() use of S and R bits to v6 and earlier
The SCTLR bits S and R (8 and 9) only exist in ARMv6 and earlier.
In ARMv7 these bits RAZ, and in ARMv8 they are reassigned. Guard
the use of them in check_ap() so that we don't get incorrect results
for ARMv8 CPUs.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index d9e94f200d..13707a37a9 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -2767,6 +2767,9 @@ static inline int check_ap(CPUARMState *env, int ap, int domain_prot, switch (ap) { case 0: + if (arm_feature(env, ARM_FEATURE_V7)) { + return 0; + } if (access_type == 1) return 0; switch (env->cp15.c1_sys & (SCTLR_S | SCTLR_R)) { |