On 04/14/2010 03:37 PM, Jan Kiszka wrote:
Avi Kivity wrote:
On 04/14/2010 03:11 PM, Jan Kiszka wrote:
When a fault triggers a task switch, the error code, if it exists, has
to be pushed on the new task's stack. Implement the missing bits.
@@ -2416,12 +2417,23 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt,
ops->set_cached_descriptor(&next_tss_desc, VCPU_SREG_TR, ctxt->vcpu);
ops->set_segment_selector(tss_selector, VCPU_SREG_TR, ctxt->vcpu);
+ if (ret == X86EMUL_CONTINUE&& has_error_code) {
+ struct decode_cache *c =&ctxt->decode;
+
+ c->op_bytes = c->ad_bytes = (next_tss_desc.type& 8) ? 4 : 2;
Don't these depend on the attributes of the segment as well?
Not on the segment, but actually on the gate size. Will fix.
The TSS descriptor (gate doesn't have a size). But isn't it possible to
have a 32-bit TSS with a 16-bit CS/SS?
--
error compiling committee.c: too many arguments to function
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