From 5ea09771be5b79c1951c3242374e1f483e7f8723 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Mon, 19 Sep 2011 06:17:21 -0700
Subject: MIPS: Use inheritance to consolidate class definitions.

---
 src/arch/mips/faults.cc | 58 ++++++++++---------------------------------------
 1 file changed, 11 insertions(+), 47 deletions(-)

(limited to 'src/arch/mips/faults.cc')

diff --git a/src/arch/mips/faults.cc b/src/arch/mips/faults.cc
index 11cc03d5f..d2c7ce85d 100644
--- a/src/arch/mips/faults.cc
+++ b/src/arch/mips/faults.cc
@@ -91,7 +91,7 @@ template <> FaultVals MipsFault<TlbInvalidFault>::vals =
 template <> FaultVals MipsFault<TlbRefillFault>::vals =
     { "TLB Refill Exception", 0x0180 };
 
-template <> FaultVals MipsFault<TLBModifiedFault>::vals =
+template <> FaultVals MipsFault<TlbModifiedFault>::vals =
     { "TLB Modified Exception", 0x0180 };
 
 template <> FaultVals MipsFault<DspStateDisabledFault>::vals =
@@ -184,21 +184,11 @@ BreakpointFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 }
 
 void
-TlbInvalidFault::invoke(ThreadContext *tc, StaticInstPtr inst)
+AddressErrorFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 {
     DPRINTF(MipsPRA, "%s encountered.\n", name());
-    setExceptionState(tc, store ? 0x3 : 0x2);
-
-    tc->setMiscRegNoEffect(MISCREG_BADVADDR, badVAddr);
-    EntryHiReg entryHi = tc->readMiscReg(MISCREG_ENTRYHI);
-    entryHi.asid = entryHiAsid;
-    entryHi.vpn2 = entryHiVPN2;
-    entryHi.vpn2x = entryHiVPN2X;
-    tc->setMiscRegNoEffect(MISCREG_ENTRYHI, entryHi);
-
-    ContextReg context = tc->readMiscReg(MISCREG_CONTEXT);
-    context.badVPN2 = contextBadVPN2;
-    tc->setMiscRegNoEffect(MISCREG_CONTEXT, context);
+    setExceptionState(tc, store ? 0x5 : 0x4);
+    tc->setMiscRegNoEffect(MISCREG_BADVADDR, vaddr);
 
     // Set new PC
     Addr HandlerBase;
@@ -208,12 +198,9 @@ TlbInvalidFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 }
 
 void
-AddressErrorFault::invoke(ThreadContext *tc, StaticInstPtr inst)
+TlbInvalidFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 {
-    DPRINTF(MipsPRA, "%s encountered.\n", name());
-    setExceptionState(tc, store ? 0x5 : 0x4);
-    tc->setMiscRegNoEffect(MISCREG_BADVADDR, vaddr);
-
+    setTlbExceptionState(tc, store ? 0x3 : 0x2);
     // Set new PC
     Addr HandlerBase;
     // Offset 0x180 - General Exception Vector
@@ -224,22 +211,11 @@ AddressErrorFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 void
 TlbRefillFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 {
-    DPRINTF(MipsPRA, "%s encountered (%x).\n", name(), MISCREG_BADVADDR);
-    setExceptionState(tc, store ? 0x3 : 0x2);
+    // Since handler depends on EXL bit, must check EXL bit before setting it!!
+    StatusReg status = tc->readMiscReg(MISCREG_STATUS);
 
-    Addr HandlerBase;
-    tc->setMiscRegNoEffect(MISCREG_BADVADDR, badVAddr);
-    EntryHiReg entryHi = tc->readMiscReg(MISCREG_ENTRYHI);
-    entryHi.asid = entryHiAsid;
-    entryHi.vpn2 = entryHiVPN2;
-    entryHi.vpn2x = entryHiVPN2X;
-    tc->setMiscRegNoEffect(MISCREG_ENTRYHI, entryHi);
-    ContextReg context = tc->readMiscReg(MISCREG_CONTEXT);
-    context.badVPN2 = contextBadVPN2;
-    tc->setMiscRegNoEffect(MISCREG_CONTEXT, context);
+    setTlbExceptionState(tc, store ? 0x3 : 0x2);
 
-    StatusReg status = tc->readMiscReg(MISCREG_STATUS);
-    // Since handler depends on EXL bit, must check EXL bit before setting it!!
     // See MIPS ARM Vol 3, Revision 2, Page 38
     if (status.exl == 1) {
         // Offset 0x180 - General Exception Vector
@@ -252,27 +228,15 @@ TlbRefillFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 }
 
 void
-TLBModifiedFault::invoke(ThreadContext *tc, StaticInstPtr inst)
+TlbModifiedFault::invoke(ThreadContext *tc, StaticInstPtr inst)
 {
-    DPRINTF(MipsPRA, "%s encountered.\n", name());
-    tc->setMiscRegNoEffect(MISCREG_BADVADDR, badVAddr);
-    EntryHiReg entryHi = tc->readMiscReg(MISCREG_ENTRYHI);
-    entryHi.asid = entryHiAsid;
-    entryHi.vpn2 = entryHiVPN2;
-    entryHi.vpn2x = entryHiVPN2X;
-    tc->setMiscRegNoEffect(MISCREG_ENTRYHI, entryHi);
-
-    ContextReg context = tc->readMiscReg(MISCREG_CONTEXT);
-    context.badVPN2 = contextBadVPN2;
-    tc->setMiscRegNoEffect(MISCREG_CONTEXT, context);
+    setTlbExceptionState(tc, 0x1);
 
     // Set new PC
     Addr HandlerBase;
     // Offset 0x180 - General Exception Vector
     HandlerBase = vect() + tc->readMiscReg(MISCREG_EBASE);
-    setExceptionState(tc, 0x1);
     setHandlerPC(HandlerBase, tc);
-
 }
 
 void
-- 
cgit v1.2.3