Changeset 13708 in vbox

Timestamp:

Oct 31, 2008 10:26:14 AM (16 years ago)

Author:

vboxsync

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

38675

Message:

Skip the TB flush as that's rather expensive and not necessary for single instruction emulation.

Location:

trunk/src

Files:

• recompiler/VBoxRecompiler.c (modified) (2 diffs)
• recompiler_new/VBoxRecompiler.c (modified) (1 diff)

trunk/src/recompiler/VBoxRecompiler.c

@@ -730 +730 @@
 REMR3DECL(int) REMR3EmulateInstruction(PVM pVM)
 {
+    bool fFlushTBs;
+
     Log2(("REMR3EmulateInstruction: (cs:eip=%04x:%08x)\n", CPUMGetGuestCS(pVM), CPUMGetGuestEIP(pVM)));
 
@@ -738 +740 @@
         pVM->rem.s.Env.state |= CPU_RAW_HWACC;
 
+    /* Skip the TB flush as that's rather expensive and not necessary for single instruction emulation. */
+    fFlushTBs = pVM->rem.s.fFlushTBs;
+    pVM->rem.s.fFlushTBs = false;
+
     /*
      * Sync the state and enable single instruction / single stepping.
      */
     int rc = REMR3State(pVM);
+    pVM->rem.s.fFlushTBs = fFlushTBs;
     if (VBOX_SUCCESS(rc))
     {

trunk/src/recompiler_new/VBoxRecompiler.c

@@ -731 +731 @@
         pVM->rem.s.Env.state |= CPU_RAW_HWACC;
 
+    /* Skip the TB flush as that's rather expensive and not necessary for single instruction emulation. */
+    fFlushTBs = pVM->rem.s.fFlushTBs;
+    pVM->rem.s.fFlushTBs = false;
+
     /*
      * Sync the state and enable single instruction / single stepping.
      */
     rc = REMR3State(pVM);
+    pVM->rem.s.fFlushTBs = fFlushTBs;
     if (VBOX_SUCCESS(rc))
     {