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| author | Eduardo Habkost <ehabkost@redhat.com> | 2015-10-07 17:19:18 -0300 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2015-10-23 12:59:27 -0200 |
| commit | 462f8ed1f1eac189ef50d9586eae8af90dbe426f (patch) | |
| tree | e0dead45fad46e231ed61e963ffddeb25c05ef35 | |
| parent | d0052339236072bbf08c1d600c0906126b1ab258 (diff) | |
| download | focaccia-qemu-462f8ed1f1eac189ef50d9586eae8af90dbe426f.tar.gz focaccia-qemu-462f8ed1f1eac189ef50d9586eae8af90dbe426f.zip | |
target-i386: Ensure always-1 bits on DR6 can't be cleared
Bits 4-11 and 16-31 on DR6 are documented as always 1, so ensure they can't be cleared by software. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
| -rw-r--r-- | target-i386/bpt_helper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target-i386/bpt_helper.c b/target-i386/bpt_helper.c index 144cfd43fc..dac1b1a360 100644 --- a/target-i386/bpt_helper.c +++ b/target-i386/bpt_helper.c @@ -262,7 +262,7 @@ void helper_set_dr(CPUX86State *env, int reg, target_ulong t0) } /* fallthru */ case 6: - env->dr[6] = t0; + env->dr[6] = t0 | DR6_FIXED_1; return; case 5: if (env->cr[4] & CR4_DE_MASK) { |