diff options
Diffstat (limited to 'target/arm/pauth_helper.c')
| -rw-r--r-- | target/arm/pauth_helper.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/target/arm/pauth_helper.c b/target/arm/pauth_helper.c index b909630317..6dbab03768 100644 --- a/target/arm/pauth_helper.c +++ b/target/arm/pauth_helper.c @@ -300,7 +300,11 @@ static uint64_t pauth_addpac(CPUARMState *env, uint64_t ptr, uint64_t modifier, */ test = sextract64(ptr, bot_bit, top_bit - bot_bit); if (test != 0 && test != -1) { - pac ^= MAKE_64BIT_MASK(top_bit - 1, 1); + /* + * Note that our top_bit is one greater than the pseudocode's + * version, hence "- 2" here. + */ + pac ^= MAKE_64BIT_MASK(top_bit - 2, 1); } /* |