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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>
This commit is contained in:
Peter Maydell 2014-02-20 10:35:51 +00:00
parent 76e3e1bcae
commit 99f678a679
1 changed files with 3 additions and 0 deletions
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3
target-arm/helper.c
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@ -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)) {