Changeset 50285 in vbox for trunk/src/VBox/VMM

Timestamp:

Jan 30, 2014 12:45:08 PM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

91932

Message:

VMM/HMVMXR0: Fix single-stepping over IO instructions (string I/O is a todo).

File:

• trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

@@ -10318 +10318 @@
                           == VMX_EXIT_QUALIFICATION_IO_DIRECTION_OUT);
     bool     fIOString = VMX_EXIT_QUALIFICATION_IO_IS_STRING(pVmxTransient->uExitQualification);
+    bool     fStepping = RT_BOOL(pMixedCtx->eflags.Bits.u1TF);
     AssertReturn(uIOWidth <= 3 && uIOWidth != 2, VERR_HMVMX_IPE_1);
 
@@ -10444 +10445 @@
          */
         if (fIOString)
+        {
+            /** @todo Single-step for INS/OUTS with REP prefix? */
             HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_RFLAGS);
+        }
+        else if (fStepping)
+            hmR0VmxSetPendingDebugXcpt(pVCpu, pMixedCtx);
 
         /*