sanchayanmaity/gem5
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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.

Browse source 
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
This commit is contained in:
Kevin Lim 2006-03-13 17:04:24 -05:00
parent af975813e5
commit f045b110cf
3 changed files with 12 additions and 24 deletions
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4
arch/alpha/ev5.cc
View file

@ -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));
}
}

12
arch/alpha/registerfile.hh
View file

@ -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

20
cpu/cpu_exec_context.cc
View file

@ -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);
}