diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-03-20 16:18:35 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-03-20 16:18:35 +0000 |
| commit | 0e39d3f89b796dc3bc80409309c738a01d8c20d2 (patch) | |
| tree | c52fa6e1d7c498473f464d708d2c74b5a6b68dfe | |
| parent | 5389a9df5363a683ecf8b11fdfc2e6a657d5ad5d (diff) | |
x86: Add NULL check to lsl (Jan Kiszka)
According to the Intel specs, lsl performs a check against NULL for the
provided selector, just like lar does. helper_lar() includes the
corresponding code, helper_lsl() was lacking it so far.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6866 c046a42c-6fe2-441c-8c8c-71466251a162
| -rw-r--r-- | target-i386/op_helper.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c index 25e079b8fd..be092637a0 100644 --- a/target-i386/op_helper.c +++ b/target-i386/op_helper.c @@ -3241,6 +3241,8 @@ target_ulong helper_lsl(target_ulong selector1) selector = selector1 & 0xffff; eflags = helper_cc_compute_all(CC_OP); + if ((selector & 0xfffc) == 0) + goto fail; if (load_segment(&e1, &e2, selector) != 0) goto fail; rpl = selector & 3; |