/*
* Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved
*
* The license below extends only to copyright in the software and shall
*/
#include "arch/arm/insts/misc.hh"
+#include "cpu/reg_class.hh"
std::string
MrsOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
ss << ", ";
bool foundPsr = false;
for (unsigned i = 0; i < numSrcRegs(); i++) {
- int idx = srcRegIdx(i);
- if (idx < Ctrl_Base_DepTag) {
+ RegIndex idx = srcRegIdx(i);
+ RegIndex rel_idx;
+ if (regIdxToClass(idx, &rel_idx) != MiscRegClass) {
continue;
}
- idx -= Ctrl_Base_DepTag;
- if (idx == MISCREG_CPSR) {
+ if (rel_idx == MISCREG_CPSR) {
ss << "cpsr";
foundPsr = true;
break;
}
- if (idx == MISCREG_SPSR) {
+ if (rel_idx == MISCREG_SPSR) {
ss << "spsr";
foundPsr = true;
break;
/*
* Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved
*
* The license below extends only to copyright in the software and shall
#include "base/loader/symtab.hh"
#include "base/condcodes.hh"
#include "base/cprintf.hh"
+#include "cpu/reg_class.hh"
namespace ArmISA
{
void
ArmStaticInst::printReg(std::ostream &os, int reg) const
{
- if (reg < FP_Base_DepTag) {
- switch (reg) {
+ RegIndex rel_reg;
+
+ switch (regIdxToClass(reg, &rel_reg)) {
+ case IntRegClass:
+ switch (rel_reg) {
case PCReg:
ccprintf(os, "pc");
break;
ccprintf(os, "r%d", reg);
break;
}
- } else if (reg < Ctrl_Base_DepTag) {
- ccprintf(os, "f%d", reg - FP_Base_DepTag);
- } else {
- reg -= Ctrl_Base_DepTag;
- assert(reg < NUM_MISCREGS);
- ccprintf(os, "%s", ArmISA::miscRegName[reg]);
+ break;
+ case FloatRegClass:
+ ccprintf(os, "f%d", rel_reg);
+ break;
+ case MiscRegClass:
+ assert(rel_reg < NUM_MISCREGS);
+ ccprintf(os, "%s", ArmISA::miscRegName[rel_reg]);
+ break;
}
}
/*
* Copyright (c) 2009 The University of Edinburgh
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
#include "arch/power/insts/static_inst.hh"
+#include "cpu/reg_class.hh"
using namespace PowerISA;
void
PowerStaticInst::printReg(std::ostream &os, int reg) const
{
- if (reg < FP_Base_DepTag) {
- ccprintf(os, "r%d", reg);
- } else if (reg < Ctrl_Base_DepTag) {
- ccprintf(os, "f%d", reg - FP_Base_DepTag);
- } else {
- switch (reg - Ctrl_Base_DepTag) {
- case 0: ccprintf(os, "cr"); break;
- case 1: ccprintf(os, "xer"); break;
- case 2: ccprintf(os, "lr"); break;
- case 3: ccprintf(os, "ctr"); break;
- default: ccprintf(os, "unknown_reg");
+ RegIndex rel_reg;
+
+ switch (regIdxToClass(reg, &rel_reg)) {
+ case IntRegClass:
+ ccprintf(os, "r%d", rel_reg);
+ break;
+ case FloatRegClass:
+ ccprintf(os, "f%d", rel_reg);
+ break;
+ case MiscRegClass:
+ switch (rel_reg) {
+ case 0: ccprintf(os, "cr"); break;
+ case 1: ccprintf(os, "xer"); break;
+ case 2: ccprintf(os, "lr"); break;
+ case 3: ccprintf(os, "ctr"); break;
+ default: ccprintf(os, "unknown_reg");
+ break;
}
}
}
/*
* Copyright (c) 2007 The Hewlett-Packard Development Company
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved.
*
* The license below extends only to copyright in the software and shall
#include "arch/x86/insts/static_inst.hh"
#include "arch/x86/regs/segment.hh"
+#include "cpu/reg_class.hh"
namespace X86ISA
{
static const char * microFormats[9] =
{"", "t%db", "t%dw", "", "t%dd", "", "", "", "t%d"};
- if (reg < FP_Base_DepTag) {
+ RegIndex rel_reg;
+
+ switch (regIdxToClass(reg, &rel_reg)) {
+ case IntRegClass: {
const char * suffix = "";
- bool fold = reg & IntFoldBit;
- reg &= ~IntFoldBit;
+ bool fold = rel_reg & IntFoldBit;
+ rel_reg &= ~IntFoldBit;
if(fold)
suffix = "h";
- else if(reg < 8 && size == 1)
+ else if(rel_reg < 8 && size == 1)
suffix = "l";
- switch (reg) {
+ switch (rel_reg) {
case INTREG_RAX:
ccprintf(os, abcdFormats[size], "a");
break;
ccprintf(os, longFormats[size], "15");
break;
default:
- ccprintf(os, microFormats[size], reg - NUM_INTREGS);
+ ccprintf(os, microFormats[size], rel_reg - NUM_INTREGS);
}
ccprintf(os, suffix);
- } else if (reg < Ctrl_Base_DepTag) {
- int fpindex = reg - FP_Base_DepTag;
- if(fpindex < NumMMXRegs) {
- ccprintf(os, "%%mmx%d", reg - FP_Base_DepTag);
+ break;
+ }
+
+ case FloatRegClass: {
+ if (rel_reg < NumMMXRegs) {
+ ccprintf(os, "%%mmx%d", rel_reg);
return;
}
- fpindex -= NumMMXRegs;
- if(fpindex < NumXMMRegs * 2) {
- ccprintf(os, "%%xmm%d_%s", fpindex / 2,
- (fpindex % 2) ? "high": "low");
+ rel_reg -= NumMMXRegs;
+ if (rel_reg < NumXMMRegs * 2) {
+ ccprintf(os, "%%xmm%d_%s", rel_reg / 2,
+ (rel_reg % 2) ? "high": "low");
return;
}
- fpindex -= NumXMMRegs * 2;
- if(fpindex < NumMicroFpRegs) {
- ccprintf(os, "%%ufp%d", fpindex);
+ rel_reg -= NumXMMRegs * 2;
+ if (rel_reg < NumMicroFpRegs) {
+ ccprintf(os, "%%ufp%d", rel_reg);
return;
}
- fpindex -= NumMicroFpRegs;
- ccprintf(os, "%%st(%d)", fpindex);
- } else {
- switch (reg - Ctrl_Base_DepTag) {
+ rel_reg -= NumMicroFpRegs;
+ ccprintf(os, "%%st(%d)", rel_reg);
+ break;
+ }
+
+ case MiscRegClass:
+ switch (rel_reg) {
default:
- ccprintf(os, "%%ctrl%d", reg - Ctrl_Base_DepTag);
+ ccprintf(os, "%%ctrl%d", rel_reg);
}
+ break;
}
}
Source('pc_event.cc')
Source('profile.cc')
Source('quiesce_event.cc')
+Source('reg_class.cc')
Source('static_inst.cc')
Source('simple_thread.cc')
Source('thread_context.cc')
/*
* Copyright (c) 2011 ARM Limited
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved
*
* The license below extends only to copyright in the software and shall
#include "config/the_isa.hh"
#include "cpu/base_dyn_inst.hh"
#include "cpu/exetrace.hh"
+#include "cpu/reg_class.hh"
#include "cpu/simple_thread.hh"
#include "cpu/static_inst.hh"
#include "cpu/thread_context.hh"
// so do the fix-up then start with the next dest reg;
if (start_idx >= 0) {
RegIndex idx = inst->destRegIdx(start_idx);
- if (idx < TheISA::FP_Base_DepTag) {
+ switch (regIdxToClass(idx)) {
+ case IntRegClass:
thread->setIntReg(idx, mismatch_val);
- } else if (idx < TheISA::Ctrl_Base_DepTag) {
+ break;
+ case FloatRegClass:
thread->setFloatRegBits(idx, mismatch_val);
- } else if (idx < TheISA::Max_DepTag) {
+ break;
+ case MiscRegClass:
thread->setMiscReg(idx - TheISA::Ctrl_Base_DepTag,
mismatch_val);
+ break;
}
}
start_idx++;
for (int i = start_idx; i < inst->numDestRegs(); i++) {
RegIndex idx = inst->destRegIdx(i);
inst->template popResult<uint64_t>(res);
- if (idx < TheISA::FP_Base_DepTag) {
+ switch (regIdxToClass(idx)) {
+ case IntRegClass:
thread->setIntReg(idx, res);
- } else if (idx < TheISA::Ctrl_Base_DepTag) {
+ break;
+ case FloatRegClass:
thread->setFloatRegBits(idx, res);
- } else if (idx < TheISA::Max_DepTag) {
+ break;
+ case MiscRegClass:
// Try to get the proper misc register index for ARM here...
thread->setMiscReg(idx - TheISA::Ctrl_Base_DepTag, res);
- } // else Register is out of range...
+ break;
+ // else Register is out of range...
+ }
}
}
/*
* Copyright (c) 2012 ARM Limited
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved
*
* The license below extends only to copyright in the software and shall
#include "cpu/base.hh"
#include "cpu/exetrace.hh"
#include "cpu/quiesce_event.hh"
+#include "cpu/reg_class.hh"
#include "cpu/simple_thread.hh"
#include "cpu/thread_context.hh"
#include "debug/Activity.hh"
RegIndex
InOrderCPU::flattenRegIdx(RegIndex reg_idx, RegType ®_type, ThreadID tid)
{
- if (reg_idx < FP_Base_DepTag) {
+ RegIndex rel_idx;
+
+ switch (regIdxToClass(reg_idx, &rel_idx)) {
+ case IntRegClass:
reg_type = IntType;
- return isa[tid]->flattenIntIndex(reg_idx);
- } else if (reg_idx < Ctrl_Base_DepTag) {
+ return isa[tid]->flattenIntIndex(rel_idx);
+
+ case FloatRegClass:
reg_type = FloatType;
- reg_idx -= FP_Base_DepTag;
- return isa[tid]->flattenFloatIndex(reg_idx);
- } else {
+ return isa[tid]->flattenFloatIndex(rel_idx);
+
+ case MiscRegClass:
reg_type = MiscType;
- return reg_idx - TheISA::Ctrl_Base_DepTag;
+ return rel_idx;
+
+ default:
+ panic("register %d out of range\n", reg_idx);
}
}
tid = TheISA::getTargetThread(tcBase(tid));
}
- if (reg_idx < FP_Base_DepTag) {
+ RegIndex rel_idx;
+
+ switch (regIdxToClass(reg_idx, &rel_idx)) {
+ case IntRegClass:
// Integer Register File
- return readIntReg(reg_idx, tid);
- } else if (reg_idx < Ctrl_Base_DepTag) {
+ return readIntReg(rel_idx, tid);
+
+ case FloatRegClass:
// Float Register File
- reg_idx -= FP_Base_DepTag;
- return readFloatRegBits(reg_idx, tid);
- } else {
- reg_idx -= Ctrl_Base_DepTag;
- return readMiscReg(reg_idx, tid); // Misc. Register File
+ return readFloatRegBits(rel_idx, tid);
+
+ case MiscRegClass:
+ return readMiscReg(rel_idx, tid); // Misc. Register File
+
+ default:
+ panic("register %d out of range\n", reg_idx);
}
}
+
void
InOrderCPU::setRegOtherThread(unsigned reg_idx, const MiscReg &val,
ThreadID tid)
tid = TheISA::getTargetThread(tcBase(tid));
}
- if (reg_idx < FP_Base_DepTag) { // Integer Register File
- setIntReg(reg_idx, val, tid);
- } else if (reg_idx < Ctrl_Base_DepTag) { // Float Register File
- reg_idx -= FP_Base_DepTag;
- setFloatRegBits(reg_idx, val, tid);
- } else {
- reg_idx -= Ctrl_Base_DepTag;
- setMiscReg(reg_idx, val, tid); // Misc. Register File
+ RegIndex rel_idx;
+
+ switch (regIdxToClass(reg_idx, &rel_idx)) {
+ case IntRegClass:
+ setIntReg(rel_idx, val, tid);
+ break;
+
+ case FloatRegClass:
+ setFloatRegBits(rel_idx, val, tid);
+ break;
+
+ case MiscRegClass:
+ setMiscReg(rel_idx, val, tid); // Misc. Register File
+ break;
}
}
/*
* Copyright (c) 2012-2013 ARM Limited
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved
*
* The license below extends only to copyright in the software and shall
#include "cpu/o3/rename_map.hh"
#include "cpu/activity.hh"
#include "cpu/base.hh"
+#include "cpu/reg_class.hh"
#include "cpu/simple_thread.hh"
#include "cpu/timebuf.hh"
#include "mem/packet.hh"
RegType inline getRegType(RegIndex reg_idx)
{
- if (reg_idx < TheISA::FP_Base_DepTag)
+ switch (regIdxToClass(reg_idx)) {
+ case IntRegClass:
return IntType;
- else if (reg_idx < TheISA::Ctrl_Base_DepTag)
+
+ case FloatRegClass:
return FloatType;
- else
+
+ case MiscRegClass:
return MiscType;
+
+ default:
+ panic("register %d out of range\n", reg_idx);
+ }
}
RegIndex flattenRegIdx(RegIndex reg_idx, RegType ®_type, ThreadID tid);
/*
* Copyright (c) 2007 MIPS Technologies, Inc.
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include "cpu/inorder/cpu.hh"
#include "cpu/inorder/inorder_dyn_inst.hh"
#include "cpu/exetrace.hh"
+#include "cpu/reg_class.hh"
#include "debug/InOrderDynInst.hh"
#include "mem/request.hh"
#include "sim/fault_fwd.hh"
tid = TheISA::getTargetThread(this->cpu->tcBase(threadNumber));
}
- if (reg_idx < FP_Base_DepTag) { // Integer Register File
- return this->cpu->readIntReg(reg_idx, tid);
- } else if (reg_idx < Ctrl_Base_DepTag) { // Float Register File
- reg_idx -= FP_Base_DepTag;
- return this->cpu->readFloatRegBits(reg_idx, tid);
- } else {
- reg_idx -= Ctrl_Base_DepTag;
- return this->cpu->readMiscReg(reg_idx, tid); // Misc. Register File
+ RegIndex rel_idx;
+
+ switch (regIdxToClass(reg_idx, &rel_idx)) {
+ case IntRegClass:
+ return this->cpu->readIntReg(rel_idx, tid);
+
+ case FloatRegClass:
+ return this->cpu->readFloatRegBits(rel_idx, tid);
+
+ case MiscRegClass:
+ return this->cpu->readMiscReg(rel_idx, tid); // Misc. Register File
+
+ default:
+ panic("register %d out of range\n", reg_idx);
+
}
}
tid = TheISA::getTargetThread(this->cpu->tcBase(threadNumber));
}
- if (reg_idx < FP_Base_DepTag) { // Integer Register File
- this->cpu->setIntReg(reg_idx, val, tid);
- } else if (reg_idx < Ctrl_Base_DepTag) { // Float Register File
- reg_idx -= FP_Base_DepTag;
- this->cpu->setFloatRegBits(reg_idx, val, tid);
- } else {
- reg_idx -= Ctrl_Base_DepTag;
- this->cpu->setMiscReg(reg_idx, val, tid); // Misc. Register File
+ RegIndex rel_idx;
+
+ switch (regIdxToClass(reg_idx, &rel_idx)) {
+ case IntRegClass:
+ this->cpu->setIntReg(rel_idx, val, tid);
+ break;
+
+ case FloatRegClass:
+ this->cpu->setFloatRegBits(rel_idx, val, tid);
+ break;
+
+ case MiscRegClass:
+ this->cpu->setMiscReg(rel_idx, val, tid); // Misc. Register File
+ break;
}
}
/*
* Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved
*
* The license below extends only to copyright in the software and shall
#include "cpu/o3/isa_specific.hh"
#include "cpu/base_dyn_inst.hh"
#include "cpu/inst_seq.hh"
+#include "cpu/reg_class.hh"
class Packet;
for (int idx = 0; idx < this->numDestRegs(); idx++) {
PhysRegIndex prev_phys_reg = this->prevDestRegIdx(idx);
- TheISA::RegIndex original_dest_reg = this->staticInst->destRegIdx(idx);
- if (original_dest_reg < TheISA::FP_Base_DepTag)
- this->setIntRegOperand(this->staticInst.get(), idx, this->cpu->readIntReg(prev_phys_reg));
- else if (original_dest_reg < TheISA::Ctrl_Base_DepTag)
- this->setFloatRegOperandBits(this->staticInst.get(), idx, this->cpu->readFloatRegBits(prev_phys_reg));
+ TheISA::RegIndex original_dest_reg =
+ this->staticInst->destRegIdx(idx);
+ switch (regIdxToClass(original_dest_reg)) {
+ case IntRegClass:
+ this->setIntRegOperand(this->staticInst.get(), idx,
+ this->cpu->readIntReg(prev_phys_reg));
+ break;
+ case FloatRegClass:
+ this->setFloatRegOperandBits(this->staticInst.get(), idx,
+ this->cpu->readFloatRegBits(prev_phys_reg));
+ break;
+ case MiscRegClass:
+ // no need to forward misc reg values
+ break;
+ }
}
}
/** Calls hardware return from error interrupt. */
/*
* Copyright (c) 2010-2012 ARM Limited
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
* All rights reserved.
*
* The license below extends only to copyright in the software and shall
#include "arch/registers.hh"
#include "config/the_isa.hh"
#include "cpu/o3/rename.hh"
+#include "cpu/reg_class.hh"
#include "debug/Activity.hh"
#include "debug/Rename.hh"
#include "debug/O3PipeView.hh"
for (int src_idx = 0; src_idx < num_src_regs; src_idx++) {
RegIndex src_reg = inst->srcRegIdx(src_idx);
RegIndex flat_src_reg = src_reg;
- if (src_reg < TheISA::FP_Base_DepTag) {
+ switch (regIdxToClass(src_reg)) {
+ case IntRegClass:
flat_src_reg = inst->tcBase()->flattenIntIndex(src_reg);
DPRINTF(Rename, "Flattening index %d to %d.\n",
(int)src_reg, (int)flat_src_reg);
- } else if (src_reg < TheISA::Ctrl_Base_DepTag) {
+ break;
+
+ case FloatRegClass:
src_reg = src_reg - TheISA::FP_Base_DepTag;
flat_src_reg = inst->tcBase()->flattenFloatIndex(src_reg);
DPRINTF(Rename, "Flattening index %d to %d.\n",
(int)src_reg, (int)flat_src_reg);
flat_src_reg += TheISA::NumIntRegs;
- } else if (src_reg < TheISA::Max_DepTag) {
+ break;
+
+ case MiscRegClass:
flat_src_reg = src_reg - TheISA::Ctrl_Base_DepTag +
TheISA::NumFloatRegs + TheISA::NumIntRegs;
DPRINTF(Rename, "Adjusting reg index from %d to %d.\n",
src_reg, flat_src_reg);
- } else {
+ break;
+
+ default:
panic("Reg index is out of bound: %d.", src_reg);
}
for (int dest_idx = 0; dest_idx < num_dest_regs; dest_idx++) {
RegIndex dest_reg = inst->destRegIdx(dest_idx);
RegIndex flat_dest_reg = dest_reg;
- if (dest_reg < TheISA::FP_Base_DepTag) {
+ switch (regIdxToClass(dest_reg)) {
+ case IntRegClass:
// Integer registers are flattened.
flat_dest_reg = inst->tcBase()->flattenIntIndex(dest_reg);
DPRINTF(Rename, "Flattening index %d to %d.\n",
(int)dest_reg, (int)flat_dest_reg);
- } else if (dest_reg < TheISA::Ctrl_Base_DepTag) {
+ break;
+
+ case FloatRegClass:
dest_reg = dest_reg - TheISA::FP_Base_DepTag;
flat_dest_reg = inst->tcBase()->flattenFloatIndex(dest_reg);
DPRINTF(Rename, "Flattening index %d to %d.\n",
(int)dest_reg, (int)flat_dest_reg);
flat_dest_reg += TheISA::NumIntRegs;
- } else if (dest_reg < TheISA::Max_DepTag) {
+ break;
+
+ case MiscRegClass:
// Floating point and Miscellaneous registers need their indexes
// adjusted to account for the expanded number of flattened int regs.
flat_dest_reg = dest_reg - TheISA::Ctrl_Base_DepTag +
TheISA::NumIntRegs + TheISA::NumFloatRegs;
DPRINTF(Rename, "Adjusting reg index from %d to %d.\n",
dest_reg, flat_dest_reg);
- } else {
+ break;
+
+ default:
panic("Reg index is out of bound: %d.", dest_reg);
}
rename_result = renameMap[tid]->rename(flat_dest_reg);
//Mark Scoreboard entry as not ready
- if (dest_reg < TheISA::Ctrl_Base_DepTag)
+ if (regIdxToClass(dest_reg) != MiscRegClass)
scoreboard->unsetReg(rename_result.first);
DPRINTF(Rename, "[tid:%u]: Renaming arch reg %i to physical "
--- /dev/null
+/*
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
+ * All rights reserved
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Steve Reinhardt
+ */
+
+#include "cpu/reg_class.hh"
+
+const char *RegClassStrings[] = {
+ "IntRegClass",
+ "FloatRegClass",
+ "MiscRegClass"
+};
--- /dev/null
+/*
+ * Copyright (c) 2013 Advanced Micro Devices, Inc.
+ * All rights reserved
+ *.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Steve Reinhardt
+ */
+
+#ifndef __CPU__REG_CLASS_HH__
+#define __CPU__REG_CLASS_HH__
+
+#include <cassert>
+#include <cstddef>
+
+#include "arch/registers.hh"
+#include "config/the_isa.hh"
+
+/// Enumerate the classes of registers.
+enum RegClass {
+ IntRegClass, ///< Integer register
+ FloatRegClass, ///< Floating-point register
+ MiscRegClass ///< Control (misc) register
+};
+
+/// Number of register classes. This value is not part of the enum,
+/// because putting it there makes the compiler complain about
+/// unhandled cases in some switch statements.
+const int NumRegClasses = MiscRegClass + 1;
+
+/**
+ * Map a 'unified' architectural register index to its register class.
+ * The unified architectural register index space is used to represent
+ * all architectural register identifiers in a single contiguous
+ * index space. See http://gem5.org/Register_Indexing.
+ *
+ * @param reg_idx Unified-space register index
+ * @param rel_reg_idx Optional output param pointer; if non-NULL, location
+ * will be written with the relative register index for reg_idx
+ *
+ * @return Register class of reg_idx
+ */
+inline
+RegClass regIdxToClass(TheISA::RegIndex reg_idx,
+ TheISA::RegIndex *rel_reg_idx = NULL)
+{
+ assert(reg_idx < TheISA::Max_DepTag);
+ RegClass cl;
+ int offset;
+
+ if (reg_idx < TheISA::FP_Base_DepTag) {
+ cl = IntRegClass;
+ offset = 0;
+ } else if (reg_idx < TheISA::Ctrl_Base_DepTag) {
+ cl = FloatRegClass;
+ offset = TheISA::FP_Base_DepTag;
+ } else {
+ cl = MiscRegClass;
+ offset = TheISA::Ctrl_Base_DepTag;
+ }
+
+ if (rel_reg_idx)
+ *rel_reg_idx = reg_idx - offset;
+ return cl;
+}
+
+/// Map enum values to strings for debugging
+extern const char *RegClassStrings[];
+
+
+#endif // __CPU__REG_CLASS_HH__
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