diff options
Diffstat (limited to 'tapset/atomic.stp')
| -rw-r--r-- | tapset/atomic.stp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tapset/atomic.stp b/tapset/atomic.stp index ab20eb5e..a295af65 100644 --- a/tapset/atomic.stp +++ b/tapset/atomic.stp @@ -6,6 +6,18 @@ // Public License (GPL); either version 2, or (at your option) any // later version. +function atomic_read:long(addr:long) +%{ /* pure */ + atomic_t *a = (atomic_t *)(long)THIS->addr; + + /* We call deref() here to ensure the memory is valid to read. + * Note the result is thrown away, then we use the "real" + * atomic read function now that we know the address is safe. */ + (void)deref(sizeof(*a), a); + THIS->__retvalue = atomic_read(a); + CATCH_DEREF_FAULT(); +%} + function atomic_long_read:long(addr:long) %{ /* pure */ #ifdef ATOMIC_LONG_INIT |