Changeset 8831 in vbox for trunk/src/VBox

Timestamp:

May 15, 2008 2:48:57 AM (17 years ago)

Author:

vboxsync

Message:

dtrace experiments.

File:

• trunk/src/VBox/VMM/VMMGC/TRPMGCHandlers.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMGC/TRPMGCHandlers.cpp

@@ -377 +377 @@
                 pRegFrame->eip += Cpu.opsize;
         }
+        /* Speed up dtrace and don't entrust invalid lock sequences to the recompiler. */
+        else if (Cpu.prefix & PREFIX_LOCK)
+        {
+            Log(("TRPMGCTrap06Handler: pc=%RGv op=%d\n", pRegFrame->eip, Cpu.pCurInstr->opcode));
+            /** @todo Clear this with PATM - it gets upset when returning VINF_EM_RAW_GUEST_TRAP on a patch address. */
+#ifdef DTRACE_EXPERIMENT
+            rc = TRPMForwardTrap(pVM, pRegFrame, 0x6, 0, TRPM_TRAP_NO_ERRORCODE, TRPM_TRAP);
+            Assert(rc == VINF_EM_RAW_GUEST_TRAP);
+#else
+            rc = VINF_EM_RAW_EMULATE_INSTR;
+#endif
+        }
+        /* Never generate a raw trap here; it might be an instruction, that requires emulation. */
         else
-            /* Never generate a raw trap here; it might be an instruction, that requires emulation. */
             rc = VINF_EM_RAW_EMULATE_INSTR;
     }