6 files changed, 17 insertions, 21 deletions

diff --git a/src/arch/mips/faults.cc b/src/arch/mips/faults.cc
index 524efa178..3076e0afe 100644
--- a/src/arch/mips/faults.cc
+++ b/src/arch/mips/faults.cc
@@ -29,6 +29,8 @@
  * Authors: Gabe Black
  *          Korey Sewell
  *          Jaidev Patwardhan
+ *          Zhengxing Li
+ *          Deyuan Guo
  */
 
 #include "arch/mips/faults.hh"
@@ -118,7 +120,7 @@ MipsFaultBase::setExceptionState(ThreadContext *tc, uint8_t excCode)
     DPRINTF(MipsPRA, "PC: %s\n", pc);
     bool delay_slot = pc.pc() + sizeof(MachInst) != pc.npc();
     tc->setMiscRegNoEffect(MISCREG_EPC,
-            pc.pc() - delay_slot ? sizeof(MachInst) : 0);
+            pc.pc() - (delay_slot ? sizeof(MachInst) : 0));
 
     // Set Cause_EXCCODE field
     CauseReg cause = tc->readMiscReg(MISCREG_CAUSE);
diff --git a/src/arch/mips/faults.hh b/src/arch/mips/faults.hh
index bce828ec1..b90c38e99 100644
--- a/src/arch/mips/faults.hh
+++ b/src/arch/mips/faults.hh
@@ -29,6 +29,8 @@
  * Authors: Gabe Black
  *          Korey Sewell
  *          Jaidev Patwardhan
+ *          Zhengxing Li
+ *          Deyuan Guo
  */
 
 #ifndef __MIPS_FAULTS_HH__
@@ -88,7 +90,7 @@ class MipsFaultBase : public FaultBase
     virtual FaultVect base(ThreadContext *tc) const
     {
         StatusReg status = tc->readMiscReg(MISCREG_STATUS);
-        if (status.bev)
+        if (!status.bev)
             return tc->readMiscReg(MISCREG_EBASE);
         else
             return 0xbfc00200;
@@ -167,7 +169,7 @@ class CoprocessorUnusableFault : public MipsFault<CoprocessorUnusableFault>
         if (FullSystem) {
             CauseReg cause = tc->readMiscReg(MISCREG_CAUSE);
             cause.ce = coProcID;
-            tc->setMiscReg(MISCREG_CAUSE, cause);
+            tc->setMiscRegNoEffect(MISCREG_CAUSE, cause);
         }
     }
 };
@@ -179,7 +181,8 @@ class InterruptFault : public MipsFault<InterruptFault>
     offset(ThreadContext *tc) const
     {
         CauseReg cause = tc->readMiscRegNoEffect(MISCREG_CAUSE);
-        return cause.iv ? 0x200 : 0x000;
+        // offset 0x200 for release 2, 0x180 for release 1.
+        return cause.iv ? 0x200 : 0x180;
     }
 };
 
@@ -251,9 +254,10 @@ class TlbFault : public AddressFault<T>
             StaticInstPtr inst = StaticInst::nullStaticInstPtr)
     {
         if (FullSystem) {
-            DPRINTF(MipsPRA, "Fault %s encountered.\n", name());
-            tc->pcState(this->vect(tc));
+            DPRINTF(MipsPRA, "Fault %s encountered.\n", this->name());
+            Addr vect = this->vect(tc);
             setTlbExceptionState(tc, this->code());
+            tc->pcState(vect);
         } else {
             AddressFault<T>::invoke(tc, inst);
         }
diff --git a/src/arch/mips/isa/decoder.isa b/src/arch/mips/isa/decoder.isa
index 193f050de..034133f96 100644
--- a/src/arch/mips/isa/decoder.isa
+++ b/src/arch/mips/isa/decoder.isa
@@ -1253,7 +1253,7 @@ decode OPCODE_HI default Unknown::unknown() {
                     //When rs=L1
                     //Note: "1. Format type L is legal only if 64-bit
                     //floating point operations are enabled."
-                    0x5: decode FUNCTION_HI {
+                    0x5: decode FUNCTION {
                         format FloatConvertOp {
                             0x20: cvt_s_l({{ val = Fs_ud; }}, ToSingle);
                             0x21: cvt_d_l({{ val = Fs_ud; }}, ToDouble);
diff --git a/src/arch/mips/linux/process.cc b/src/arch/mips/linux/process.cc
index 156d4ea05..0982e05cb 100644
--- a/src/arch/mips/linux/process.cc
+++ b/src/arch/mips/linux/process.cc
@@ -55,7 +55,7 @@ unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
 
     strcpy(name->sysname, "Linux");
     strcpy(name->nodename,"m5.eecs.umich.edu");
-    strcpy(name->release, "2.4.20");
+    strcpy(name->release, "2.6.35");
     strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
     strcpy(name->machine, "mips");
 
diff --git a/src/arch/mips/registers.hh b/src/arch/mips/registers.hh
index dce7858bf..d3cf1650d 100644
--- a/src/arch/mips/registers.hh
+++ b/src/arch/mips/registers.hh
@@ -55,7 +55,7 @@ const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs;        //HI & LO Regs
 const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;//
 
 const uint32_t MIPS32_QNAN = 0x7fbfffff;
-const uint64_t MIPS64_QNAN = ULL(0x7fbfffffffffffff);
+const uint64_t MIPS64_QNAN = ULL(0x7ff7ffffffffffff);
 
 enum FPControlRegNums {
    FLOATREG_FIR = NumFloatArchRegs,
diff --git a/src/arch/mips/tlb.cc b/src/arch/mips/tlb.cc
index 057fb5e76..d28ef8231 100644
--- a/src/arch/mips/tlb.cc
+++ b/src/arch/mips/tlb.cc
@@ -29,6 +29,8 @@
  * Authors: Nathan Binkert
  *          Steve Reinhardt
  *          Jaidev Patwardhan
+ *          Zhengxing Li
+ *          Deyuan Guo
  */
 
 #include <string>
@@ -310,18 +312,6 @@ Fault
 TLB::translateData(RequestPtr req, ThreadContext *tc, bool write)
 {
     if (!FullSystem) {
-        //@TODO: This should actually use TLB instead of going directly
-        //       to the page table in syscall mode.
-        /**
-         * Check for alignment faults
-         */
-        if (req->getVaddr() & (req->getSize() - 1)) {
-            DPRINTF(TLB, "Alignment Fault on %#x, size = %d", req->getVaddr(),
-                    req->getSize());
-            return new AddressErrorFault(req->getVaddr(), write);
-        }
-
-
         Process * p = tc->getProcessPtr();
 
         Fault fault = p->pTable->translate(req);