Changeset 1125 in vbox for trunk/src/VBox/VMM/PATM/VMMAll

Timestamp:

Mar 1, 2007 12:30:38 PM (18 years ago)

Author:

vboxsync

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

19022

Message:

Forward iret to V86 code to our trap handler for emulation.

File:

• trunk/src/VBox/VMM/PATM/VMMAll/PATMAll.cpp (modified) (1 diff)

trunk/src/VBox/VMM/PATM/VMMAll/PATMAll.cpp

@@ -586 +586 @@
                 return VINF_PATM_PENDING_IRQ_AFTER_IRET;
 
+            case PATM_ACTION_DO_V86_IRET:
+            {
+                Log(("PATMGC: Do iret to V86 code; eip=%VGv\n", pRegFrame->eip));
+                Assert(pVM->patm.s.CTXSUFF(pGCState)->Restore.uFlags == (PATM_RESTORE_EAX|PATM_RESTORE_ECX));
+                Assert(pVM->patm.s.CTXSUFF(pGCState)->fPIF == 0);
+
+                pRegFrame->eax = pVM->patm.s.CTXSUFF(pGCState)->Restore.uEAX;
+                pRegFrame->ecx = pVM->patm.s.CTXSUFF(pGCState)->Restore.uECX;
+                pVM->patm.s.CTXSUFF(pGCState)->Restore.uFlags = 0;
+
+                /* We are no longer executing PATM code; set PIF again. */
+                pVM->patm.s.CTXSUFF(pGCState)->fPIF = 1;
+                rc = EMInterpretIret(pVM, pRegFrame);
+                if (VBOX_SUCCESS(rc))
+                    STAM_COUNTER_INC(&pVM->patm.s.StatEmulIret); 
+                else 
+                    STAM_COUNTER_INC(&pVM->patm.s.StatEmulIretFailed); 
+                return rc;
+            }
+
 #ifdef DEBUG
             case PATM_ACTION_LOG_CLI: