From 944bfde6b34a27f2438e38f7d870532ed6c0447a Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Fri, 27 Oct 2006 01:36:42 -0400
Subject: Clean up MiscRegFile

--HG--
extra : convert_revision : 3bc792596c99df3a5c2c82da58b801a63ccf6ddb
---
 src/arch/sparc/miscregfile.cc | 65 ++++---------------------------------------
 src/arch/sparc/miscregfile.hh | 28 ++++---------------
 2 files changed, 11 insertions(+), 82 deletions(-)

(limited to 'src/arch')

diff --git a/src/arch/sparc/miscregfile.cc b/src/arch/sparc/miscregfile.cc
index ada3c18e7..bf4572878 100644
--- a/src/arch/sparc/miscregfile.cc
+++ b/src/arch/sparc/miscregfile.cc
@@ -202,78 +202,27 @@ MiscReg MiscRegFile::readReg(int miscReg)
     }
 }
 
-MiscReg MiscRegFile::readRegWithEffect(int miscReg,
-        Fault &fault, ThreadContext * tc)
+MiscReg MiscRegFile::readRegWithEffect(int miscReg, ThreadContext * tc)
 {
-    fault = NoFault;
     switch (miscReg) {
-        case MISCREG_Y:
-        case MISCREG_CCR:
-        case MISCREG_ASI:
-          return readReg(miscReg);
-
         case MISCREG_TICK:
         case MISCREG_PRIVTICK:
-          // Check  for reading privilege
-          if (tickFields.npt && !isNonPriv()) {
-              fault = new PrivilegedAction;
-              return 0;
-          }
           return tc->getCpuPtr()->curCycle() - tickFields.counter |
               tickFields.npt << 63;
         case MISCREG_FPRS:
-          fault = new UnimpFault("FPU not implemented\n");
-          return 0;
+          panic("FPU not implemented\n");
         case MISCREG_PCR:
-          fault = new UnimpFault("Performance Instrumentation not impl\n");
-          return 0;
         case MISCREG_PIC:
-          fault = new UnimpFault("Performance Instrumentation not impl\n");
-          return 0;
-        case MISCREG_GSR:
-          return readReg(miscReg);
-
-        /** Privilged Registers */
-        case MISCREG_TPC:
-        case MISCREG_TNPC:
-        case MISCREG_TSTATE:
-        case MISCREG_TT:
-          if (tl == 0) {
-              fault = new IllegalInstruction;
-              return 0;
-          } // NOTE THE FALL THROUGH!
-        case MISCREG_PSTATE:
-        case MISCREG_TL:
-          return readReg(miscReg);
-
-        case MISCREG_TBA:
-          return readReg(miscReg) & ULL(~0x7FFF);
-
-        case MISCREG_PIL:
-
-        case MISCREG_CWP:
-        case MISCREG_CANSAVE:
-        case MISCREG_CANRESTORE:
-        case MISCREG_CLEANWIN:
-        case MISCREG_OTHERWIN:
-        case MISCREG_WSTATE:
-        case MISCREG_GL:
-          return readReg(miscReg);
+          panic("Performance Instrumentation not impl\n");
 
         /** Floating Point Status Register */
         case MISCREG_FSR:
           panic("Floating Point not implemented\n");
-        default:
-#if FULL_SYSTEM
-          return readFSRegWithEffect(miscReg, fault, tc);
-#else
-          fault = new IllegalInstruction;
-          return 0;
-#endif
     }
+    return readReg(miscReg);
 }
 
-Fault MiscRegFile::setReg(int miscReg, const MiscReg &val)
+void MiscRegFile::setReg(int miscReg, const MiscReg &val)
 {
     switch (miscReg) {
         case MISCREG_Y:
@@ -386,10 +335,9 @@ Fault MiscRegFile::setReg(int miscReg, const MiscReg &val)
         default:
           panic("Miscellaneous register %d not implemented\n", miscReg);
     }
-    return NoFault;
 }
 
-Fault MiscRegFile::setRegWithEffect(int miscReg,
+void MiscRegFile::setRegWithEffect(int miscReg,
         const MiscReg &val, ThreadContext * tc)
 {
     const uint64_t Bit64 = (1ULL << 63);
@@ -412,7 +360,6 @@ Fault MiscRegFile::setRegWithEffect(int miscReg,
           break;
     }
     setReg(miscReg, val);
-    return NoFault;
 }
 
 void MiscRegFile::serialize(std::ostream & os)
diff --git a/src/arch/sparc/miscregfile.hh b/src/arch/sparc/miscregfile.hh
index 0d81dae1e..771cb1ed6 100644
--- a/src/arch/sparc/miscregfile.hh
+++ b/src/arch/sparc/miscregfile.hh
@@ -365,31 +365,13 @@ namespace SparcISA
             reset();
         }
 
-        /** read a value out of an either an SE or FS IPR. No checking is done
-         * about SE vs. FS as this is mostly used to copy the regfile. Thus more
-         * register are copied that are necessary for FS. However this prevents
-         * a bunch of ifdefs and is rarely called so is not performance
-         * criticial. */
         MiscReg readReg(int miscReg);
 
-        /** Read a value from an IPR. Only the SE iprs are here and the rest
-         * are are readFSRegWithEffect (which is called by readRegWithEffect()).
-         * Checking is done for permission based on state bits in the miscreg
-         * file. */
-        MiscReg readRegWithEffect(int miscReg, Fault &fault, ThreadContext *tc);
-
-        /** write a value into an either an SE or FS IPR. No checking is done
-         * about SE vs. FS as this is mostly used to copy the regfile. Thus more
-         * register are copied that are necessary for FS. However this prevents
-         * a bunch of ifdefs and is rarely called so is not performance
-         * criticial.*/
-        Fault setReg(int miscReg, const MiscReg &val);
-
-        /** Write a value into an IPR. Only the SE iprs are here and the rest
-         * are are setFSRegWithEffect (which is called by setRegWithEffect()).
-         * Checking is done for permission based on state bits in the miscreg
-         * file. */
-        Fault setRegWithEffect(int miscReg,
+        MiscReg readRegWithEffect(int miscReg, ThreadContext *tc);
+
+        void setReg(int miscReg, const MiscReg &val);
+
+        void setRegWithEffect(int miscReg,
                 const MiscReg &val, ThreadContext * tc);
 
         void serialize(std::ostream & os);
-- 
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