1 files changed, 48 insertions, 0 deletions
diff --git a/src/arch/arm/isa/insts/misc.isa b/src/arch/arm/isa/insts/misc.isa
index 64bff6cb1..7f9a5c171 100644
--- a/src/arch/arm/isa/insts/misc.isa
+++ b/src/arch/arm/isa/insts/misc.isa
@@ -468,6 +468,54 @@ let {{
     decoder_output += BasicConstructor.subst(nopIop)
     exec_output += PredOpExecute.subst(nopIop)
 
+    yieldIop = InstObjParams("yield", "YieldInst", "PredOp", \
+            { "code" : "", "predicate_test" : predicateTest })
+    header_output += BasicDeclare.subst(yieldIop)
+    decoder_output += BasicConstructor.subst(yieldIop)
+    exec_output += PredOpExecute.subst(yieldIop)
+
+    wfeCode = '''
+#if FULL_SYSTEM
+    if (SevMailbox)
+        SevMailbox = 0;
+    else
+        PseudoInst::quiesce(xc->tcBase());
+#endif
+    '''
+    wfeIop = InstObjParams("wfe", "WfeInst", "PredOp", \
+            { "code" : wfeCode, "predicate_test" : predicateTest },
+            ["IsNonSpeculative", "IsQuiesce"])
+    header_output += BasicDeclare.subst(wfeIop)
+    decoder_output += BasicConstructor.subst(wfeIop)
+    exec_output += PredOpExecute.subst(wfeIop)
+
+    wfiCode = '''
+#if FULL_SYSTEM
+    PseudoInst::quiesce(xc->tcBase());
+#endif
+    '''
+    wfiIop = InstObjParams("wfi", "WfiInst", "PredOp", \
+            { "code" : wfiCode, "predicate_test" : predicateTest },
+            ["IsNonSpeculative", "IsQuiesce"])
+    header_output += BasicDeclare.subst(wfiIop)
+    decoder_output += BasicConstructor.subst(wfiIop)
+    exec_output += PredOpExecute.subst(wfiIop)
+
+    sevCode = '''
+    // Need a way for O3 to not scoreboard these accesses as pipe flushes.
+    System *sys = xc->tcBase()->getSystemPtr();
+    for (int x = 0; x < sys->numContexts(); x++) {
+        ThreadContext *oc = sys->getThreadContext(x);
+        oc->setMiscReg(MISCREG_SEV_MAILBOX, 1);
+    }
+    '''
+    sevIop = InstObjParams("sev", "SevInst", "PredOp", \
+            { "code" : sevCode, "predicate_test" : predicateTest },
+            ["IsNonSpeculative", "IsQuiesce"])
+    header_output += BasicDeclare.subst(sevIop)
+    decoder_output += BasicConstructor.subst(sevIop)
+    exec_output += PredOpExecute.subst(sevIop)
+
     itIop = InstObjParams("it", "ItInst", "PredOp", \
             { "code" : "Itstate = machInst.newItstate;",
               "predicate_test" : predicateTest })