/*
* Copyright (c) 2001-2005 The Regents of The University of Michigan
* 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
* Lisa Hsu
* Nathan Binkert
* Steve Raasch
*/
#include <fstream>
#include <iomanip>
#include <sys/ipc.h>
#include <sys/shm.h>
#include "arch/regfile.hh"
#include "arch/utility.hh"
#include "base/loader/symtab.hh"
#include "config/full_system.hh"
#include "cpu/base.hh"
#include "cpu/exetrace.hh"
#include "cpu/static_inst.hh"
#include "sim/param.hh"
#include "sim/system.hh"
#if FULL_SYSTEM
#include "arch/tlb.hh"
#endif
//XXX This is temporary
#include "arch/isa_specific.hh"
#include "cpu/m5legion_interface.h"
using namespace std;
using namespace TheISA;
#if THE_ISA == SPARC_ISA && FULL_SYSTEM
static int diffcount = 0;
#endif
namespace Trace {
SharedData *shared_data = NULL;
}
////////////////////////////////////////////////////////////////////////
//
// Methods for the InstRecord object
//
#if THE_ISA == SPARC_ISA
inline char * genCenteredLabel(int length, char * buffer, char * label)
{
int labelLength = strlen(label);
assert(labelLength <= length);
int leftPad = (length - labelLength) / 2;
int rightPad = length - leftPad - labelLength;
char format[64];
sprintf(format, "%%%ds%%s%%%ds", leftPad, rightPad);
sprintf(buffer, format, "", label, "");
return buffer;
}
inline void printRegPair(ostream & os, char const * title, uint64_t a, uint64_t b)
{
ccprintf(os, " %16s | %#018x %s %#-018x \n",
title, a, (a == b) ? "|" : "X", b);
}
inline void printColumnLabels(ostream & os)
{
static char * regLabel = genCenteredLabel(16, new char[17], "Register");
static char * m5Label = genCenteredLabel(18, new char[18], "M5");
static char * legionLabel = genCenteredLabel(18, new char[18], "Legion");
ccprintf(os, " %s | %s | %s \n", regLabel, m5Label, legionLabel);
ccprintf(os, "--------------------+-----------------------+-----------------------\n");
}
inline void printSectionHeader(ostream & os, char * name)
{
char sectionString[70];
genCenteredLabel(69, sectionString, name);
ccprintf(os, "====================================================================\n");
ccprintf(os, "%69s\n", sectionString);
ccprintf(os, "====================================================================\n");
}
inline void printLevelHeader(ostream & os, int level)
{
char sectionString[70];
char levelName[70];
sprintf(levelName, "Trap stack level %d", level);
genCenteredLabel(69, sectionString, levelName);
ccprintf(os, "====================================================================\n");
ccprintf(os, "%69s\n", sectionString);
ccprintf(os, "====================================================================\n");
}
#endif
void
Trace::InstRecord::dump(ostream &outs)
{
if (flags[PRINT_REG_DELTA])
{
#if THE_ISA == SPARC_ISA
//Don't print what happens for each micro-op, just print out
//once at the last op, and for regular instructions.
if(!staticInst->isMicroOp() || staticInst->isLastMicroOp())
{
static uint64_t regs[32] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0};
static uint64_t ccr = 0;
static uint64_t y = 0;
static uint64_t floats[32];
uint64_t newVal;
static const char * prefixes[4] = {"G", "O", "L", "I"};
outs << hex;
outs << "PC = " << thread->readNextPC();
outs << " NPC = " << thread->readNextNPC();
newVal = thread->readMiscReg(SparcISA::MISCREG_CCR);
if(newVal != ccr)
{
outs << " CCR = " << newVal;
ccr = newVal;
}
newVal = thread->readMiscReg(SparcISA::MISCREG_Y);
if(newVal != y)
{
outs << " Y = " << newVal;
y = newVal;
}
for(int y = 0; y < 4; y++)
{
for(int x = 0; x < 8; x++)
{
int index = x + 8 * y;
newVal = thread->readIntReg(index);
if(regs[index] != newVal)
{
outs << " " << prefixes[y] << dec << x << " = " << hex << newVal;
regs[index] = newVal;
}
}
}
for(int y = 0; y < 32; y++)
{
newVal = thread->readFloatRegBits(2 * y, 64);
if(floats[y] != newVal)
{
outs << " F" << dec << (2 * y) << " = " << hex << newVal;
floats[y] = newVal;
}
}
outs << dec << endl;
}
#endif
}
else if (flags[INTEL_FORMAT]) {
#if FULL_SYSTEM
bool is_trace_system = (thread->getCpuPtr()->system->name() == trace_system);
#else
bool is_trace_system = true;
#endif
if (is_trace_system) {
ccprintf(outs, "%7d ) ", cycle);
outs << "0x" << hex << PC << ":\t";
if (staticInst->isLoad()) {
outs << "<RD 0x" << hex << addr;
outs << ">";
} else if (staticInst->isStore()) {
outs << "<WR 0x" << hex << addr;
outs << ">";
}
outs << endl;
}
} else {
if (flags[PRINT_CYCLE])
ccprintf(outs, "%7d: ", cycle);
outs << thread->getCpuPtr()->name() << " ";
if (flags[TRACE_MISSPEC])
outs << (misspeculating ? "-" : "+") << " ";
if (flags[PRINT_THREAD_NUM])
outs << "T" << thread->getThreadNum() << " : ";
std::string sym_str;
Addr sym_addr;
if (debugSymbolTable
&& debugSymbolTable->findNearestSymbol(PC, sym_str, sym_addr)
&& flags[PC_SYMBOL]) {
if (PC != sym_addr)
sym_str += csprintf("+%d", PC - sym_addr);
outs << "@" << sym_str << " : ";
}
else {
outs << "0x" << hex << PC << " : ";
}
//
// Print decoded instruction
//
#if defined(__GNUC__) && (__GNUC__ < 3)
// There's a bug in gcc 2.x library that prevents setw()
// from working properly on strings
string mc(staticInst->disassemble(PC, debugSymbolTable));
while (mc.length() < 26)
mc += " ";
outs << mc;
#else
outs << setw(26) << left << staticInst->disassemble(PC, debugSymbolTable);
#endif
outs << " : ";
if (flags[PRINT_OP_CLASS]) {
outs << opClassStrings[staticInst->opClass()] << " : ";
}
if (flags[PRINT_RESULT_DATA] && data_status != DataInvalid) {
outs << " D=";
#if 0
if (data_status == DataDouble)
ccprintf(outs, "%f", data.as_double);
else
ccprintf(outs, "%#018x", data.as_int);
#else
ccprintf(outs, "%#018x", data.as_int);
#endif
}
if (flags[PRINT_EFF_ADDR] && addr_valid)
outs << " A=0x" << hex << addr;
if (flags[PRINT_INT_REGS] && regs_valid) {
for (int i = 0; i < TheISA::NumIntRegs;)
for (int j = i + 1; i <= j; i++)
ccprintf(outs, "r%02d = %#018x%s", i,
iregs->regs.readReg(i),
((i == j) ? "\n" : " "));
outs << "\n";
}
if (flags[PRINT_FETCH_SEQ] && fetch_seq_valid)
outs << " FetchSeq=" << dec << fetch_seq;
if (flags[PRINT_CP_SEQ] && cp_seq_valid)
outs << " CPSeq=" << dec << cp_seq;
//
// End of line...
//
outs << endl;
}
#if THE_ISA == SPARC_ISA && FULL_SYSTEM
// Compare
if (flags[LEGION_LOCKSTEP])
{
bool compared = false;
bool diffPC = false;
bool diffCC = false;
bool diffInst = false;
bool diffRegs = false;
bool diffTpc = false;
bool diffTnpc = false;
bool diffTstate = false;
bool diffTt = false;
bool diffTba = false;
bool diffHpstate = false;
bool diffHtstate = false;
bool diffHtba = false;
bool diffPstate = false;
bool diffY = false;
bool diffCcr = false;
bool diffTl = false;
bool diffGl = false;
bool diffAsi = false;
bool diffPil = false;
bool diffCwp = false;
bool diffCansave = false;
bool diffCanrestore = false;
bool diffOtherwin = false;
bool diffCleanwin = false;
bool diffTlb = false;
Addr m5Pc, lgnPc;
if(!staticInst->isMicroOp() || staticInst->isLastMicroOp()) {
while (!compared) {
if (shared_data->flags == OWN_M5) {
m5Pc = PC & TheISA::PAddrImplMask;
lgnPc = shared_data->pc & TheISA::PAddrImplMask;
if (lgnPc != m5Pc)
diffPC = true;
if (shared_data->cycle_count !=
thread->getCpuPtr()->instCount())
diffCC = true;
if (shared_data->instruction !=
(SparcISA::MachInst)staticInst->machInst) {
diffInst = true;
}
for (int i = 0; i < TheISA::NumIntArchRegs; i++) {
if (thread->readIntReg(i) != shared_data->intregs[i]) {
diffRegs = true;
}
}
uint64_t oldTl = thread->readMiscReg(MISCREG_TL);
if (oldTl != shared_data->tl)
diffTl = true;
for (int i = 1; i <= MaxTL; i++) {
thread->setMiscReg(MISCREG_TL, i);
if (thread->readMiscReg(MISCREG_TPC) !=
shared_data->tpc[i-1])
diffTpc = true;
if (thread->readMiscReg(MISCREG_TNPC) !=
shared_data->tnpc[i-1])
diffTnpc = true;
if (thread->readMiscReg(MISCREG_TSTATE) !=
shared_data->tstate[i-1])
diffTstate = true;
if (thread->readMiscReg(MISCREG_TT) !=
shared_data->tt[i-1])
diffTt = true;
if (thread->readMiscReg(MISCREG_HTSTATE) !=
shared_data->htstate[i-1])
diffHtstate = true;
}
thread->setMiscReg(MISCREG_TL, oldTl);
if(shared_data->tba != thread->readMiscReg(MISCREG_TBA))
diffTba = true;
//When the hpstate register is read by an instruction,
//legion has bit 11 set. When it's in storage, it doesn't.
//Since we don't directly support seperate interpretations
//of the registers like that, the bit is always set to 1 and
//we just don't compare it. It's not supposed to matter
//anyway.
if((shared_data->hpstate | (1 << 11)) != thread->readMiscReg(MISCREG_HPSTATE))
diffHpstate = true;
if(shared_data->htba != thread->readMiscReg(MISCREG_HTBA))
diffHtba = true;
if(shared_data->pstate != thread->readMiscReg(MISCREG_PSTATE))
diffPstate = true;
if(shared_data->y != thread->readMiscReg(MISCREG_Y))
diffY = true;
if(shared_data->ccr != thread->readMiscReg(MISCREG_CCR))
diffCcr = true;
if(shared_data->gl != thread->readMiscReg(MISCREG_GL))
diffGl = true;
if(shared_data->asi != thread->readMiscReg(MISCREG_ASI))
diffAsi = true;
if(shared_data->pil != thread->readMiscReg(MISCREG_PIL))
diffPil = true;
if(shared_data->cwp != thread->readMiscReg(MISCREG_CWP))
diffCwp = true;
if(shared_data->cansave != thread->readMiscReg(MISCREG_CANSAVE))
diffCansave = true;
if(shared_data->canrestore !=
thread->readMiscReg(MISCREG_CANRESTORE))
diffCanrestore = true;
if(shared_data->otherwin != thread->readMiscReg(MISCREG_OTHERWIN))
diffOtherwin = true;
if(shared_data->cleanwin != thread->readMiscReg(MISCREG_CLEANWIN))
diffCleanwin = true;
for (int i = 0; i < 64; i++) {
if (shared_data->itb[i] != thread->getITBPtr()->TteRead(i))
diffTlb = true;
if (shared_data->dtb[i] != thread->getDTBPtr()->TteRead(i))
diffTlb = true;
}
if ((diffPC || diffCC || diffInst || diffRegs || diffTpc ||
diffTnpc || diffTstate || diffTt || diffHpstate ||
diffHtstate || diffHtba || diffPstate || diffY ||
diffCcr || diffTl || diffGl || diffAsi || diffPil ||
diffCwp || diffCansave || diffCanrestore ||
diffOtherwin || diffCleanwin || diffTlb)
&& !((staticInst->machInst & 0xC1F80000) == 0x81D00000)
&& !(((staticInst->machInst & 0xC0000000) == 0xC0000000)
&& shared_data->tl == thread->readMiscReg(MISCREG_TL) + 1)
) {
outs << "Differences found between M5 and Legion:";
if (diffPC)
outs << " [PC]";
if (diffCC)
outs << " [CC]";
if (diffInst)
outs << " [Instruction]";
if (diffRegs)
outs << " [IntRegs]";
if (diffTpc)
outs << " [Tpc]";
if (diffTnpc)
outs << " [Tnpc]";
if (diffTstate)
outs << " [Tstate]";
if (diffTt)
outs << " [Tt]";
if (diffHpstate)
outs << " [Hpstate]";
if (diffHtstate)
outs << " [Htstate]";
if (diffHtba)
outs << " [Htba]";
if (diffPstate)
outs << " [Pstate]";
if (diffY)
outs << " [Y]";
if (diffCcr)
outs << " [Ccr]";
if (diffTl)
outs << " [Tl]";
if (diffGl)
outs << " [Gl]";
if (diffAsi)
outs << " [Asi]";
if (diffPil)
outs << " [Pil]";
if (diffCwp)
outs << " [Cwp]";
if (diffCansave)
outs << " [Cansave]";
if (diffCanrestore)
outs << " [Canrestore]";
if (diffOtherwin)
outs << " [Otherwin]";
if (diffCleanwin)
outs << " [Cleanwin]";
if (diffTlb)
outs << " [Tlb]";
outs << endl << endl;
outs << right << setfill(' ') << setw(15)
<< "M5 PC: " << "0x"<< setw(16) << setfill('0')
<< hex << m5Pc << endl;
outs << setfill(' ') << setw(15)
<< "Legion PC: " << "0x"<< setw(16) << setfill('0') << hex
<< lgnPc << endl << endl;
outs << right << setfill(' ') << setw(15)
<< "M5 CC: " << "0x"<< setw(16) << setfill('0')
<< hex << thread->getCpuPtr()->instCount() << endl;
outs << setfill(' ') << setw(15)
<< "Legion CC: " << "0x"<< setw(16) << setfill('0') << hex
<< shared_data->cycle_count << endl << endl;
outs << setfill(' ') << setw(15)
<< "M5 Inst: " << "0x"<< setw(8)
<< setfill('0') << hex << staticInst->machInst
<< staticInst->disassemble(m5Pc, debugSymbolTable)
<< endl;
StaticInstPtr legionInst =
StaticInst::decode(makeExtMI(shared_data->instruction,
thread));
outs << setfill(' ') << setw(15)
<< " Legion Inst: "
<< "0x" << setw(8) << setfill('0') << hex
<< shared_data->instruction
<< legionInst->disassemble(lgnPc, debugSymbolTable)
<< endl << endl;
printSectionHeader(outs, "General State");
printColumnLabels(outs);
printRegPair(outs, "HPstate",
thread->readMiscReg(MISCREG_HPSTATE),
shared_data->hpstate | (1 << 11));
printRegPair(outs, "Htba",
thread->readMiscReg(MISCREG_HTBA),
shared_data->htba);
printRegPair(outs, "Pstate",
thread->readMiscReg(MISCREG_PSTATE),
shared_data->pstate);
printRegPair(outs, "Y",
thread->readMiscReg(MISCREG_Y),
shared_data->y);
printRegPair(outs, "Ccr",
thread->readMiscReg(MISCREG_CCR),
shared_data->ccr);
printRegPair(outs, "Tl",
thread->readMiscReg(MISCREG_TL),
shared_data->tl);
printRegPair(outs, "Gl",
thread->readMiscReg(MISCREG_GL),
shared_data->gl);
printRegPair(outs, "Asi",
thread->readMiscReg(MISCREG_ASI),
shared_data->asi);
printRegPair(outs, "Pil",
thread->readMiscReg(MISCREG_PIL),
shared_data->pil);
printRegPair(outs, "Cwp",
thread->readMiscReg(MISCREG_CWP),
shared_data->cwp);
printRegPair(outs, "Cansave",
thread->readMiscReg(MISCREG_CANSAVE),
shared_data->cansave);
printRegPair(outs, "Canrestore",
thread->readMiscReg(MISCREG_CANRESTORE),
shared_data->canrestore);
printRegPair(outs, "Otherwin",
thread->readMiscReg(MISCREG_OTHERWIN),
shared_data->otherwin);
printRegPair(outs, "Cleanwin",
thread->readMiscReg(MISCREG_CLEANWIN),
shared_data->cleanwin);
outs << endl;
for (int i = 1; i <= MaxTL; i++) {
printLevelHeader(outs, i);
printColumnLabels(outs);
thread->setMiscReg(MISCREG_TL, i);
printRegPair(outs, "Tpc",
thread->readMiscReg(MISCREG_TPC),
shared_data->tpc[i-1]);
printRegPair(outs, "Tnpc",
thread->readMiscReg(MISCREG_TNPC),
shared_data->tnpc[i-1]);
printRegPair(outs, "Tstate",
thread->readMiscReg(MISCREG_TSTATE),
shared_data->tstate[i-1]);
printRegPair(outs, "Tt",
thread->readMiscReg(MISCREG_TT),
shared_data->tt[i-1]);
printRegPair(outs, "Htstate",
thread->readMiscReg(MISCREG_HTSTATE),
shared_data->htstate[i-1]);
}
thread->setMiscReg(MISCREG_TL, oldTl);
outs << endl;
printSectionHeader(outs, "General Purpose Registers");
static const char * regtypes[4] = {"%g", "%o", "%l", "%i"};
for(int y = 0; y < 4; y++)
{
for(int x = 0; x < 8; x++)
{
char label[8];
sprintf(label, "%s%d", regtypes[y], x);
printRegPair(outs, label,
thread->readIntReg(y*8+x),
shared_data->intregs[y*8+x]);
/*outs << regtypes[y] << x << " " ;
outs << "0x" << hex << setw(16)
<< thread->readIntReg(y*8+x);
if (thread->readIntReg(y*8 + x)
!= shared_data->intregs[y*8+x])
outs << " X ";
else
outs << " | ";
outs << "0x" << setw(16) << hex
<< shared_data->intregs[y*8+x]
<< endl;*/
}
}
printColumnLabels(outs);
char label[8];
for (int x = 0; x < 64; x++) {
if (shared_data->itb[x] != ULL(0xFFFFFFFFFFFFFFFF) ||
thread->getITBPtr()->TteRead(x) != ULL(0xFFFFFFFFFFFFFFFF)) {
sprintf(label, "I-TLB:%02d", x);
printRegPair(outs, label, thread->getITBPtr()->TteRead(x), shared_data->itb[x]);
}
}
for (int x = 0; x < 64; x++) {
if (shared_data->dtb[x] != ULL(0xFFFFFFFFFFFFFFFF) ||
thread->getDTBPtr()->TteRead(x) != ULL(0xFFFFFFFFFFFFFFFF)) {
sprintf(label, "D-TLB:%02d", x);
printRegPair(outs, label, thread->getDTBPtr()->TteRead(x), shared_data->dtb[x]);
}
}
thread->getITBPtr()->dumpAll();
thread->getDTBPtr()->dumpAll();
diffcount++;
if (diffcount > 2)
fatal("Differences found between Legion and M5\n");
}
compared = true;
shared_data->flags = OWN_LEGION;
}
} // while
} // if not microop
}
#endif
}
vector<bool> Trace::InstRecord::flags(NUM_BITS);
string Trace::InstRecord::trace_system;
////////////////////////////////////////////////////////////////////////
//
// Parameter space for per-cycle execution address tracing options.
// Derive from ParamContext so we can override checkParams() function.
//
class ExecutionTraceParamContext : public ParamContext
{
public:
ExecutionTraceParamContext(const string &_iniSection)
: ParamContext(_iniSection)
{
}
void checkParams(); // defined at bottom of file
};
ExecutionTraceParamContext exeTraceParams("exetrace");
Param<bool> exe_trace_spec(&exeTraceParams, "speculative",
"capture speculative instructions", true);
Param<bool> exe_trace_print_cycle(&exeTraceParams, "print_cycle",
"print cycle number", true);
Param<bool> exe_trace_print_opclass(&exeTraceParams, "print_opclass",
"print op class", true);
Param<bool> exe_trace_print_thread(&exeTraceParams, "print_thread",
"print thread number", true);
Param<bool> exe_trace_print_effaddr(&exeTraceParams, "print_effaddr",
"print effective address", true);
Param<bool> exe_trace_print_data(&exeTraceParams, "print_data",
"print result data", true);
Param<bool> exe_trace_print_iregs(&exeTraceParams, "print_iregs",
"print all integer regs", false);
Param<bool> exe_trace_print_fetchseq(&exeTraceParams, "print_fetchseq",
"print fetch sequence number", false);
Param<bool> exe_trace_print_cp_seq(&exeTraceParams, "print_cpseq",
"print correct-path sequence number", false);
Param<bool> exe_trace_print_reg_delta(&exeTraceParams, "print_reg_delta",
"print which registers changed to what", false);
Param<bool> exe_trace_pc_symbol(&exeTraceParams, "pc_symbol",
"Use symbols for the PC if available", true);
Param<bool> exe_trace_intel_format(&exeTraceParams, "intel_format",
"print trace in intel compatible format", false);
Param<bool> exe_trace_legion_lockstep(&exeTraceParams, "legion_lockstep",
"Compare sim state to legion state every cycle",
false);
Param<string> exe_trace_system(&exeTraceParams, "trace_system",
"print trace of which system (client or server)",
"client");
//
// Helper function for ExecutionTraceParamContext::checkParams() just
// to get us into the InstRecord namespace
//
void
Trace::InstRecord::setParams()
{
flags[TRACE_MISSPEC] = exe_trace_spec;
flags[PRINT_CYCLE] = exe_trace_print_cycle;
flags[PRINT_OP_CLASS] = exe_trace_print_opclass;
flags[PRINT_THREAD_NUM] = exe_trace_print_thread;
flags[PRINT_RESULT_DATA] = exe_trace_print_effaddr;
flags[PRINT_EFF_ADDR] = exe_trace_print_data;
flags[PRINT_INT_REGS] = exe_trace_print_iregs;
flags[PRINT_FETCH_SEQ] = exe_trace_print_fetchseq;
flags[PRINT_CP_SEQ] = exe_trace_print_cp_seq;
flags[PRINT_REG_DELTA] = exe_trace_print_reg_delta;
flags[PC_SYMBOL] = exe_trace_pc_symbol;
flags[INTEL_FORMAT] = exe_trace_intel_format;
flags[LEGION_LOCKSTEP] = exe_trace_legion_lockstep;
trace_system = exe_trace_system;
// If were going to be in lockstep with Legion
// Setup shared memory, and get otherwise ready
if (flags[LEGION_LOCKSTEP]) {
int shmfd = shmget('M' << 24 | getuid(), sizeof(SharedData), 0777);
if (shmfd < 0)
fatal("Couldn't get shared memory fd. Is Legion running?");
shared_data = (SharedData*)shmat(shmfd, NULL, SHM_RND);
if (shared_data == (SharedData*)-1)
fatal("Couldn't allocate shared memory");
if (shared_data->flags != OWN_M5)
fatal("Shared memory has invalid owner");
if (shared_data->version != VERSION)
fatal("Shared Data is wrong version! M5: %d Legion: %d", VERSION,
shared_data->version);
// step legion forward one cycle so we can get register values
shared_data->flags = OWN_LEGION;
}
}
void
ExecutionTraceParamContext::checkParams()
{
Trace::InstRecord::setParams();
}