diff options
| author | Sergey Fedorov <s.fedorov@samsung.com> | 2013-12-10 10:41:49 +0400 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2013-12-10 13:28:50 +0000 |
| commit | 74f1c6ddec8dc7566d9b75574bb006214cc7d3b4 (patch) | |
| tree | 1b47961cab29209d0bf40ff19ecb1343b33bf5ac | |
| parent | 09f7813522238555b77ec2b9f2d3bc20d6e3c796 (diff) | |
target-arm: fix TTBCR write masking
Current implementation is not accurate according to ARMv7-AR reference
manual. See "B4.1.153 TTBCR, Translation Table Base Control Register,
VMSA | TTBCR format when using the Long-descriptor translation table
format". When LPAE feature is supported, EAE, bit[31] selects
translation descriptor format and, therefore, TTBCR format.
Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1386657709-23399-1-git-send-email-s.fedorov@samsung.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target-arm/helper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 8ec4cb1cd1..5e5e5aad2b 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -1173,7 +1173,7 @@ static int vmsa_ttbcr_raw_write(CPUARMState *env, const ARMCPRegInfo *ri, { int maskshift = extract32(value, 0, 3); - if (arm_feature(env, ARM_FEATURE_LPAE)) { + if (arm_feature(env, ARM_FEATURE_LPAE) && (value & (1 << 31))) { value &= ~((7 << 19) | (3 << 14) | (0xf << 3)); } else { value &= 7; |