From f045b110cf1db6f9fc70589532b48d9cca339897 Mon Sep 17 00:00:00 2001
From: Kevin Lim <ktlim@umich.edu>
Date: Mon, 13 Mar 2006 17:04:24 -0500
Subject: [PATCH] Have a copyRegs function defined in the ISA that copies
 registers from one ExecContext to another ExecContext.  This makes it easier
 for anything that needs to copy architected registers to do so in an ISA
 independent fashion.

arch/alpha/ev5.cc:
    copyIprs now copies from a source ExecContext to a destination ExecContext.
arch/alpha/registerfile.hh:
    Have ISA specific functions to copy all architected registers from one ExecContext to another.
cpu/cpu_exec_context.cc:
    Call the ISA in order to copy any architected registers.

--HG--
extra : convert_revision : 056cc3b3a9f345535d5a57c6524b114bbd5ae3c8
---
 arch/alpha/ev5.cc          |  4 ++--
 arch/alpha/registerfile.hh | 12 ++++++++----
 cpu/cpu_exec_context.cc    | 20 ++------------------
 3 files changed, 12 insertions(+), 24 deletions(-)

diff --git a/arch/alpha/ev5.cc b/arch/alpha/ev5.cc
index 019e83dd4..6d45edbff 100644
--- a/arch/alpha/ev5.cc
+++ b/arch/alpha/ev5.cc
@@ -542,10 +542,10 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
 }
 
 void
-AlphaISA::MiscRegFile::copyIprs(ExecContext *xc)
+AlphaISA::copyIprs(ExecContext *src, ExecContext *dest)
 {
     for (int i = IPR_Base_DepTag; i < NumInternalProcRegs; ++i) {
-        ipr[i] = xc->readMiscReg(i);
+        dest->setMiscReg(i, src->readMiscReg(i));
     }
 }
 
diff --git a/arch/alpha/registerfile.hh b/arch/alpha/registerfile.hh
index c2fb56ec1..6bdab78f5 100644
--- a/arch/alpha/registerfile.hh
+++ b/arch/alpha/registerfile.hh
@@ -34,6 +34,7 @@
 #include "sim/faults.hh"
 
 class Checkpoint;
+class ExecContext;
 
 namespace AlphaISA
 {
@@ -67,8 +68,6 @@ namespace AlphaISA
         Fault setRegWithEffect(int misc_reg, const MiscReg &val,
                                ExecContext *xc);
 
-        void copyMiscRegs(ExecContext *xc);
-
 #if FULL_SYSTEM
       protected:
         typedef uint64_t InternalProcReg;
@@ -79,8 +78,6 @@ namespace AlphaISA
         InternalProcReg readIpr(int idx, Fault &fault, ExecContext *xc);
 
         Fault setIpr(int idx, InternalProcReg val, ExecContext *xc);
-
-        void copyIprs(ExecContext *xc);
 #endif
         friend class RegFile;
     };
@@ -105,6 +102,13 @@ namespace AlphaISA
         void unserialize(Checkpoint *cp, const std::string &section);
     };
 
+    void copyRegs(ExecContext *src, ExecContext *dest);
+
+    void copyMiscRegs(ExecContext *src, ExecContext *dest);
+
+#if FULL_SYSTEM
+    void copyIprs(ExecContext *src, ExecContext *dest);
+#endif
 } // namespace AlphaISA
 
 #endif
diff --git a/cpu/cpu_exec_context.cc b/cpu/cpu_exec_context.cc
index 2ad9571ce..0a3dc5675 100644
--- a/cpu/cpu_exec_context.cc
+++ b/cpu/cpu_exec_context.cc
@@ -28,6 +28,7 @@
 
 #include <string>
 
+#include "arch/isa_traits.hh"
 #include "cpu/base.hh"
 #include "cpu/cpu_exec_context.hh"
 #include "cpu/exec_context.hh"
@@ -269,23 +270,6 @@ CPUExecContext::regStats(const string &name)
 void
 CPUExecContext::copyArchRegs(ExecContext *xc)
 {
-    // First loop through the integer registers.
-    for (int i = 0; i < TheISA::NumIntRegs; ++i) {
-        setIntReg(i, xc->readIntReg(i));
-    }
-
-    // Then loop through the floating point registers.
-    for (int i = 0; i < TheISA::NumFloatRegs; ++i) {
-        setFloatRegDouble(i, xc->readFloatRegDouble(i));
-        setFloatRegInt(i, xc->readFloatRegInt(i));
-    }
-
-    // Copy misc. registers
-    regs.miscRegs.copyMiscRegs(xc);
-
-    // Lastly copy PC/NPC
-    setPC(xc->readPC());
-    setNextPC(xc->readNextPC());
-    setNextNPC(xc->readNextNPC());
+    TheISA::copyRegs(xc, proxy);
 }