gem5/src/cpu/inorder/inorder_dyn_inst.cc
Andreas Hansson b6aa6d55eb clang/gcc: Fix compilation issues with clang 3.0 and gcc 4.6
This patch addresses a number of minor issues that cause problems when
compiling with clang >= 3.0 and gcc >= 4.6. Most importantly, it
avoids using the deprecated ext/hash_map and instead uses
unordered_map (and similarly so for the hash_set). To make use of the
new STL containers, g++ and clang has to be invoked with "-std=c++0x",
and this is now added for all gcc versions >= 4.6, and for clang >=
3.0. For gcc >= 4.3 and <= 4.5 and clang <= 3.0 we use the tr1
unordered_map to avoid the deprecation warning.

The addition of c++0x in turn causes a few problems, as the
compiler is more stringent and adds a number of new warnings. Below,
the most important issues are enumerated:

1) the use of namespaces is more strict, e.g. for isnan, and all
   headers opening the entire namespace std are now fixed.

2) another other issue caused by the more stringent compiler is the
   narrowing of the embedded python, which used to be a char array,
   and is now unsigned char since there were values larger than 128.

3) a particularly odd issue that arose with the new c++0x behaviour is
   found in range.hh, where the operator< causes gcc to complain about
   the template type parsing (the "<" is interpreted as the beginning
   of a template argument), and the problem seems to be related to the
   begin/end members introduced for the range-type iteration, which is
   a new feature in c++11.

As a minor update, this patch also fixes the build flags for the clang
debug target that used to be shared with gcc and incorrectly use
"-ggdb".
2012-04-14 05:43:31 -04:00

593 lines
17 KiB
C++

/*
* Copyright (c) 2007 MIPS Technologies, 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: Korey Sewell
*
*/
#include <iostream>
#include <set>
#include <sstream>
#include <string>
#include "base/bigint.hh"
#include "base/cp_annotate.hh"
#include "base/cprintf.hh"
#include "base/trace.hh"
#include "config/the_isa.hh"
#include "cpu/inorder/cpu.hh"
#include "cpu/inorder/inorder_dyn_inst.hh"
#include "cpu/exetrace.hh"
#include "debug/InOrderDynInst.hh"
#include "mem/request.hh"
#include "sim/fault_fwd.hh"
#include "sim/full_system.hh"
using namespace std;
using namespace TheISA;
using namespace ThePipeline;
InOrderDynInst::InOrderDynInst(InOrderCPU *cpu,
InOrderThreadState *state,
InstSeqNum seq_num,
ThreadID tid,
unsigned _asid)
: seqNum(seq_num), squashSeqNum(0), threadNumber(tid), asid(_asid),
virtProcNumber(0), staticInst(NULL), traceData(NULL), cpu(cpu),
thread(state), fault(NoFault), memData(NULL), loadData(0),
storeData(0), effAddr(0), physEffAddr(0), memReqFlags(0),
readyRegs(0), pc(0), predPC(0), memAddr(0), nextStage(0),
memTime(0), splitMemData(NULL), splitMemReq(NULL), totalSize(0),
split2ndSize(0), split2ndAddr(0), split2ndAccess(false),
split2ndDataPtr(NULL), split2ndFlags(0), splitInst(false),
splitFinishCnt(0), split2ndStoreDataPtr(NULL), splitInstSked(false),
inFrontEnd(true), frontSked(NULL), backSked(NULL),
squashingStage(0), predictTaken(false), procDelaySlotOnMispred(false),
fetchMemReq(NULL), dataMemReq(NULL), instEffAddr(0), eaCalcDone(false),
lqIdx(0), sqIdx(0), onInstList(false)
{
for(int i = 0; i < MaxInstSrcRegs; i++) {
_readySrcRegIdx[i] = false;
_srcRegIdx[i] = 0;
}
for(int j = 0; j < MaxInstDestRegs; j++) {
_destRegIdx[j] = 0;
_prevDestRegIdx[j] = 0;
}
++instcount;
DPRINTF(InOrderDynInst, "DynInst: [tid:%i] [sn:%lli] Instruction created."
" (active insts: %i)\n", threadNumber, seqNum, instcount);
}
int InOrderDynInst::instcount = 0;
int
InOrderDynInst::cpuId()
{
return cpu->cpuId();
}
void
InOrderDynInst::setStaticInst(StaticInstPtr si)
{
staticInst = si;
for (int i = 0; i < this->staticInst->numDestRegs(); i++) {
_destRegIdx[i] = this->staticInst->destRegIdx(i);
}
for (int i = 0; i < this->staticInst->numSrcRegs(); i++) {
_srcRegIdx[i] = this->staticInst->srcRegIdx(i);
this->_readySrcRegIdx[i] = 0;
}
}
void
InOrderDynInst::initVars()
{
inFrontEnd = true;
fetchMemReq = NULL;
dataMemReq = NULL;
splitMemData = NULL;
split2ndAddr = 0;
split2ndAccess = false;
splitInst = false;
splitInstSked = false;
splitFinishCnt = 0;
effAddr = 0;
physEffAddr = 0;
readyRegs = 0;
nextStage = 0;
status.reset();
memAddrReady = false;
eaCalcDone = false;
predictTaken = false;
procDelaySlotOnMispred = false;
lqIdx = -1;
sqIdx = -1;
// Also make this a parameter, or perhaps get it from xc or cpu.
asid = 0;
virtProcNumber = 0;
// Initialize the fault to be NoFault.
fault = NoFault;
// Make sure to have the renamed register entries set to the same
// as the normal register entries. It will allow the IQ to work
// without any modifications.
if (this->staticInst) {
for (int i = 0; i < this->staticInst->numDestRegs(); i++) {
_destRegIdx[i] = this->staticInst->destRegIdx(i);
}
for (int i = 0; i < this->staticInst->numSrcRegs(); i++) {
_srcRegIdx[i] = this->staticInst->srcRegIdx(i);
this->_readySrcRegIdx[i] = 0;
}
}
// Update Instruction Count for this instruction
if (instcount > 100) {
fatal("Number of Active Instructions in CPU is too high. "
"(Not Dereferencing Ptrs. Correctly?)\n");
}
}
void
InOrderDynInst::resetInstCount()
{
instcount = 0;
}
InOrderDynInst::~InOrderDynInst()
{
if (traceData)
delete traceData;
if (splitMemData)
delete [] splitMemData;
fault = NoFault;
--instcount;
DPRINTF(InOrderDynInst, "DynInst: [tid:%i] [sn:%lli] Instruction destroyed"
" (active insts: %i)\n", threadNumber, seqNum, instcount);
}
void
InOrderDynInst::setStaticInst(StaticInstPtr &static_inst)
{
this->staticInst = static_inst;
// Make sure to have the renamed register entries set to the same
// as the normal register entries. It will allow the IQ to work
// without any modifications.
if (this->staticInst) {
for (int i = 0; i < this->staticInst->numDestRegs(); i++) {
_destRegIdx[i] = this->staticInst->destRegIdx(i);
}
for (int i = 0; i < this->staticInst->numSrcRegs(); i++) {
_srcRegIdx[i] = this->staticInst->srcRegIdx(i);
this->_readySrcRegIdx[i] = 0;
}
}
}
Fault
InOrderDynInst::execute()
{
// @todo: Pretty convoluted way to avoid squashing from happening
// when using the TC during an instruction's execution
// (specifically for instructions that have side-effects that use
// the TC). Fix this.
bool in_syscall = this->thread->inSyscall;
this->thread->inSyscall = true;
this->fault = this->staticInst->execute(this, this->traceData);
this->thread->inSyscall = in_syscall;
return this->fault;
}
Fault
InOrderDynInst::calcEA()
{
this->fault = this->staticInst->eaComp(this, this->traceData);
return this->fault;
}
Fault
InOrderDynInst::initiateAcc()
{
// @todo: Pretty convoluted way to avoid squashing from happening
// when using the TC during an instruction's execution
// (specifically for instructions that have side-effects that use
// the TC). Fix this.
bool in_syscall = this->thread->inSyscall;
this->thread->inSyscall = true;
this->fault = this->staticInst->initiateAcc(this, this->traceData);
this->thread->inSyscall = in_syscall;
return this->fault;
}
Fault
InOrderDynInst::completeAcc(Packet *pkt)
{
this->fault = this->staticInst->completeAcc(pkt, this, this->traceData);
return this->fault;
}
Fault
InOrderDynInst::memAccess()
{
return initiateAcc();
}
Fault
InOrderDynInst::hwrei()
{
#if THE_ISA == ALPHA_ISA
// Can only do a hwrei when in pal mode.
if (!(this->instAddr() & 0x3))
return new AlphaISA::UnimplementedOpcodeFault;
// Set the next PC based on the value of the EXC_ADDR IPR.
AlphaISA::PCState pc = this->pcState();
pc.npc(this->cpu->readMiscRegNoEffect(AlphaISA::IPR_EXC_ADDR,
this->threadNumber));
this->pcState(pc);
if (CPA::available()) {
ThreadContext *tc = this->cpu->tcBase(this->threadNumber);
CPA::cpa()->swAutoBegin(tc, this->nextInstAddr());
}
// Tell CPU to clear any state it needs to if a hwrei is taken.
this->cpu->hwrei(this->threadNumber);
#endif
return NoFault;
}
void
InOrderDynInst::trap(Fault fault)
{
this->cpu->trap(fault, this->threadNumber, this);
}
bool
InOrderDynInst::simPalCheck(int palFunc)
{
#if THE_ISA != ALPHA_ISA
panic("simPalCheck called, but PAL only exists in Alpha!\n");
#endif
return this->cpu->simPalCheck(palFunc, this->threadNumber);
}
void
InOrderDynInst::syscall(int64_t callnum)
{
if (FullSystem)
panic("Syscall emulation isn't available in FS mode.\n");
syscallNum = callnum;
cpu->syscallContext(NoFault, this->threadNumber, this);
}
void
InOrderDynInst::setSquashInfo(unsigned stage_num)
{
squashingStage = stage_num;
// If it's a fault, then we need to squash
// the faulting instruction too. Squash
// functions squash above a seqNum, so we
// decrement here for that case
if (fault != NoFault) {
squashSeqNum = seqNum - 1;
return;
} else
squashSeqNum = seqNum;
#if ISA_HAS_DELAY_SLOT
if (staticInst && isControl()) {
TheISA::PCState nextPC = pc;
TheISA::advancePC(nextPC, staticInst);
// Check to see if we should squash after the
// branch or after a branch delay slot.
if (pc.nextInstAddr() == pc.instAddr() + sizeof(MachInst))
squashSeqNum = seqNum + 1;
else
squashSeqNum = seqNum;
}
#endif
}
void
InOrderDynInst::releaseReq(ResourceRequest* req)
{
std::list<ResourceRequest*>::iterator list_it = reqList.begin();
std::list<ResourceRequest*>::iterator list_end = reqList.end();
while(list_it != list_end) {
if((*list_it)->getResIdx() == req->getResIdx() &&
(*list_it)->getSlot() == req->getSlot()) {
DPRINTF(InOrderDynInst, "[tid:%u]: [sn:%i] Done with request "
"to %s.\n", threadNumber, seqNum, req->res->name());
reqList.erase(list_it);
return;
}
list_it++;
}
panic("Releasing Res. Request That Isnt There!\n");
}
/** Records an integer source register being set to a value. */
void
InOrderDynInst::setIntSrc(int idx, uint64_t val)
{
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] [src:%i] Int being set "
"to %#x.\n", threadNumber, seqNum, idx, val);
instSrc[idx].intVal = val;
}
/** Records an fp register being set to a value. */
void
InOrderDynInst::setFloatSrc(int idx, FloatReg val)
{
instSrc[idx].fpVal.f = val;
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] [src:%i] FP being set "
"to %x, %08f...%08f\n", threadNumber, seqNum, idx,
instSrc[idx].fpVal.i, instSrc[idx].fpVal.f, val);
}
/** Records an fp register being set to an integer value. */
void
InOrderDynInst::setFloatRegBitsSrc(int idx, FloatRegBits val)
{
instSrc[idx].fpVal.i = val;
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] [src:%i] FPBits being set "
"to %x, %08f...%x\n", threadNumber, seqNum, idx,
instSrc[idx].fpVal.i, instSrc[idx].fpVal.f, val);
}
/** Reads a integer register. */
IntReg
InOrderDynInst::readIntRegOperand(const StaticInst *si, int idx, ThreadID tid)
{
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] [src:%i] IntVal read as %#x.\n",
threadNumber, seqNum, idx, instSrc[idx].intVal);
return instSrc[idx].intVal;
}
/** Reads a FP register. */
FloatReg
InOrderDynInst::readFloatRegOperand(const StaticInst *si, int idx)
{
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] [src:%i] FPVal being read "
"as %x, %08f.\n", threadNumber, seqNum, idx,
instSrc[idx].fpVal.i, instSrc[idx].fpVal.f);
return instSrc[idx].fpVal.f;
}
/** Reads a FP register as a integer. */
FloatRegBits
InOrderDynInst::readFloatRegOperandBits(const StaticInst *si, int idx)
{
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] [src:%i] FPBits being read "
"as %x, %08f.\n", threadNumber, seqNum, idx,
instSrc[idx].fpVal.i, instSrc[idx].fpVal.f);
return instSrc[idx].fpVal.i;
}
/** Reads a miscellaneous register. */
MiscReg
InOrderDynInst::readMiscReg(int misc_reg)
{
return this->cpu->readMiscReg(misc_reg, threadNumber);
}
/** Reads a misc. register, including any side-effects the read
* might have as defined by the architecture.
*/
MiscReg
InOrderDynInst::readMiscRegOperand(const StaticInst *si, int idx)
{
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] Misc. Reg Source Value %i"
" read as %#x.\n", threadNumber, seqNum, idx,
instSrc[idx].intVal);
return instSrc[idx].intVal;
}
/** Sets a misc. register, including any side-effects the write
* might have as defined by the architecture.
*/
void
InOrderDynInst::setMiscRegOperand(const StaticInst *si, int idx,
const MiscReg &val)
{
instResult[idx].type = Integer;
instResult[idx].res.intVal = val;
instResult[idx].tick = curTick();
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] Setting Misc Reg. Operand %i "
"being set to %#x.\n", threadNumber, seqNum, idx, val);
}
MiscReg
InOrderDynInst::readRegOtherThread(unsigned reg_idx, ThreadID tid)
{
if (tid == -1) {
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
}
}
/** Sets a Integer register. */
void
InOrderDynInst::setIntRegOperand(const StaticInst *si, int idx, IntReg val)
{
instResult[idx].type = Integer;
instResult[idx].res.intVal = val;
instResult[idx].tick = curTick();
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] Setting Result Int Reg. %i "
"being set to %#x (result-tick:%i).\n",
threadNumber, seqNum, idx, val, instResult[idx].tick);
}
/** Sets a FP register. */
void
InOrderDynInst::setFloatRegOperand(const StaticInst *si, int idx, FloatReg val)
{
instResult[idx].type = Float;
instResult[idx].res.fpVal.f = val;
instResult[idx].tick = curTick();
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] Result Float Reg. %i "
"being set to %#x, %08f (result-tick:%i).\n",
threadNumber, seqNum, idx, val, val, instResult[idx].tick);
}
/** Sets a FP register as a integer. */
void
InOrderDynInst::setFloatRegOperandBits(const StaticInst *si, int idx,
FloatRegBits val)
{
instResult[idx].type = FloatBits;
instResult[idx].res.fpVal.i = val;
instResult[idx].tick = curTick();
DPRINTF(InOrderDynInst, "[tid:%i]: [sn:%i] Result Float Reg. Bits %i "
"being set to %#x (result-tick:%i).\n",
threadNumber, seqNum, idx, val, instResult[idx].tick);
}
/** Sets a misc. register, including any side-effects the write
* might have as defined by the architecture.
*/
/* Alter this if/when wanting to *speculate* on Miscellaneous registers */
void
InOrderDynInst::setMiscReg(int misc_reg, const MiscReg &val)
{
this->cpu->setMiscReg(misc_reg, val, threadNumber);
}
void
InOrderDynInst::setRegOtherThread(unsigned reg_idx, const MiscReg &val,
ThreadID tid)
{
if (tid == InvalidThreadID) {
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
}
}
void
InOrderDynInst::deallocateContext(int thread_num)
{
this->cpu->deallocateContext(thread_num);
}
Fault
InOrderDynInst::readMem(Addr addr, uint8_t *data,
unsigned size, unsigned flags)
{
return cpu->read(this, addr, data, size, flags);
}
Fault
InOrderDynInst::writeMem(uint8_t *data, unsigned size,
Addr addr, unsigned flags, uint64_t *res)
{
return cpu->write(this, data, size, addr, flags, res);
}
void
InOrderDynInst::dump()
{
cprintf("T%d : %#08d `", threadNumber, pc.instAddr());
cout << staticInst->disassemble(pc.instAddr());
cprintf("'\n");
}
void
InOrderDynInst::dump(std::string &outstring)
{
std::ostringstream s;
s << "T" << threadNumber << " : " << pc << " "
<< staticInst->disassemble(pc.instAddr());
outstring = s.str();
}