diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-02-16 11:43:40 -0800 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-02-21 16:07:00 +0000 |
| commit | 7eeb4c2ce8dc0a5655526f3f39bd5d6cc02efb39 (patch) | |
| tree | 0386f0226dccc4af3d3dd48dd26b5ba304dec4f8 /target | |
| parent | 528dc354b6f3aa82d65141cc60bc0e725e6cae98 (diff) | |
target/arm: Use bit 55 explicitly for pauth
The psuedocode in aarch64/functions/pac/auth/Auth and
aarch64/functions/pac/strip/Strip always uses bit 55 for
extfield and do not consider if the current regime has 2 ranges.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200216194343.21331-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/pauth_helper.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/target/arm/pauth_helper.c b/target/arm/pauth_helper.c index 9746e32bf8..b909630317 100644 --- a/target/arm/pauth_helper.c +++ b/target/arm/pauth_helper.c @@ -320,7 +320,8 @@ static uint64_t pauth_addpac(CPUARMState *env, uint64_t ptr, uint64_t modifier, static uint64_t pauth_original_ptr(uint64_t ptr, ARMVAParameters param) { - uint64_t extfield = -param.select; + /* Note that bit 55 is used whether or not the regime has 2 ranges. */ + uint64_t extfield = sextract64(ptr, 55, 1); int bot_pac_bit = 64 - param.tsz; int top_pac_bit = 64 - 8 * param.tbi; |