From 573d59441e420f02fd7cf3e31158258f5eee3ab1 Mon Sep 17 00:00:00 2001
From: Lisa Hsu <hsul@eecs.umich.edu>
Date: Fri, 15 Dec 2006 13:05:46 -0500
Subject: [PATCH] some small general fixes to make everythign work nicely with
 other ISAs, now we can merge back with newmem. exetrace.cc: wrap this
 variable between FULL_SYSTEM #ifs mmaped_ipr.hh: fix for build
 miscregfile.cc: fixes for HPSTATE access during SE mode

src/arch/sparc/miscregfile.cc:
    fixes for HPSTATE access during SE mode
src/arch/mips/mmaped_ipr.hh:
    fix for build
src/cpu/exetrace.cc:
    wrap this variable between FULL_SYSTEM #ifs

--HG--
extra : convert_revision : c5b9d56ab99018a91d04de47ba1d5ca7768590bb
---
 src/arch/mips/mmaped_ipr.hh   |  3 ++-
 src/arch/sparc/miscregfile.cc | 18 ++++++++++++++----
 src/cpu/exetrace.cc           |  2 ++
 3 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/src/arch/mips/mmaped_ipr.hh b/src/arch/mips/mmaped_ipr.hh
index 041c76fdc..fa82a645c 100644
--- a/src/arch/mips/mmaped_ipr.hh
+++ b/src/arch/mips/mmaped_ipr.hh
@@ -37,8 +37,10 @@
  * ISA-specific helper functions for memory mapped IPR accesses.
  */
 
+#include "base/misc.hh"
 #include "mem/packet.hh"
 
+class ThreadContext;
 
 namespace MipsISA
 {
@@ -48,7 +50,6 @@ handleIprRead(ThreadContext *xc, Packet *pkt)
     panic("No implementation for handleIprRead in MIPS\n");
 }
 
-
 inline Tick
 handleIprWrite(ThreadContext *xc, Packet *pkt)
 {
diff --git a/src/arch/sparc/miscregfile.cc b/src/arch/sparc/miscregfile.cc
index 5bc11aae6..53559c072 100644
--- a/src/arch/sparc/miscregfile.cc
+++ b/src/arch/sparc/miscregfile.cc
@@ -341,7 +341,6 @@ MiscReg MiscRegFile::readRegWithEffect(int miscReg, ThreadContext * tc)
       case MISCREG_SOFTINT:
       case MISCREG_TICK_CMPR:
       case MISCREG_STICK_CMPR:
-      case MISCREG_HPSTATE:
       case MISCREG_HINTP:
       case MISCREG_HTSTATE:
       case MISCREG_HTBA:
@@ -357,9 +356,16 @@ MiscReg MiscRegFile::readRegWithEffect(int miscReg, ThreadContext * tc)
       case MISCREG_QUEUE_NRES_ERROR_HEAD:
       case MISCREG_QUEUE_NRES_ERROR_TAIL:
 #if FULL_SYSTEM
+      case MISCREG_HPSTATE:
         return readFSRegWithEffect(miscReg, tc);
 #else
-        panic("Accessing Fullsystem register is SE mode\n");
+      case MISCREG_HPSTATE:
+        //HPSTATE is special because because sometimes in privilege checks for instructions
+        //it will read HPSTATE to make sure the priv. level is ok
+        //So, we'll just have to tell it it isn't, instead of panicing.
+        return 0;
+
+      panic("Accessing Fullsystem register %s in SE mode\n",getMiscRegName(miscReg));
 #endif
 
     }
@@ -633,7 +639,6 @@ void MiscRegFile::setRegWithEffect(int miscReg,
       case MISCREG_SOFTINT:
       case MISCREG_TICK_CMPR:
       case MISCREG_STICK_CMPR:
-      case MISCREG_HPSTATE:
       case MISCREG_HINTP:
       case MISCREG_HTSTATE:
       case MISCREG_HTBA:
@@ -649,10 +654,15 @@ void MiscRegFile::setRegWithEffect(int miscReg,
       case MISCREG_QUEUE_NRES_ERROR_HEAD:
       case MISCREG_QUEUE_NRES_ERROR_TAIL:
 #if FULL_SYSTEM
+      case MISCREG_HPSTATE:
         setFSRegWithEffect(miscReg, val, tc);
         return;
 #else
-        panic("Accessing Fullsystem register is SE mode\n");
+      case MISCREG_HPSTATE:
+        //HPSTATE is special because normal trap processing saves HPSTATE when
+        //it goes into a trap, and restores it when it returns.
+        return;
+      panic("Accessing Fullsystem register %s to %#x in SE mode\n", getMiscRegName(miscReg), val);
 #endif
     }
     setReg(miscReg, val);
diff --git a/src/cpu/exetrace.cc b/src/cpu/exetrace.cc
index 316716540..3fe40b4c1 100644
--- a/src/cpu/exetrace.cc
+++ b/src/cpu/exetrace.cc
@@ -57,7 +57,9 @@
 using namespace std;
 using namespace TheISA;
 
+#if THE_ISA == SPARC_ISA && FULL_SYSTEM
 static int diffcount = 0;
+#endif
 
 namespace Trace {
 SharedData *shared_data = NULL;
-- 
2.30.2