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introduce convert-trace tool

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The input (taken on stdin) is a gem5.opt --debug-flags=MemoryAccess
trace (--format gem5), or a dump-trace output (--format dump) for easy
trace synthesis (for testing purposes).

gem5 format: Currently imports physical, not virtual memory addresses.
dump format: Currently ignores extended trace information.

Change-Id: Ic26a996d6fb9ce4175c855fadcbcff9ac9263888
This commit is contained in:
Horst Schirmeier
2013-09-08 22:16:08 +02:00
parent e4a5a7a592
commit 9cd40842d2
9 changed files with 285 additions and 1 deletions
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73
tools/convert-trace/DumpConverter.cc Normal file
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#include <sstream>
#include <string>
#include "util/Logger.hpp"
#include "comm/TracePlugin.pb.h"
#include "DumpConverter.hpp"
using namespace fail;
using std::stringstream;
using std::endl;
using std::hex;
using std::dec;
static Logger LOG("DumpConverter", true);
// TODO: convert extended trace information, too
bool DumpConverter::convert()
{
char buf[2048], dummy[1024];
int64_t prev_cycle = 0, cycle;
while (m_input.getline(buf, sizeof(buf))) {
Trace_Event ev;
// IP 1035c9 t=0
// MEM R 123abc width 4 IP 1035c9 t=1
// MEM W 123abc width 4 IP 1035c9 t=1
std::stringstream ss(buf);
std::string ev_type;
ss >> ev_type;
if (ev_type == "MEM") {
std::string accesstype;
uint64_t data_address;
uint32_t data_width;
ss >> accesstype >> hex >> data_address >> dummy >> dec >> data_width >> ev_type;
if (!ss) {
LOG << "input mismatch (1), input = " << buf << endl;
continue;
}
ev.set_memaddr(data_address);
ev.set_width(data_width);
ev.set_accesstype(accesstype == "R" ? ev.READ : ev.WRITE);
}
assert(ev_type == "IP");
uint64_t instr_address;
ss >> hex >> instr_address >> dummy;
if (!ss || dummy[0] != 't' || dummy[1] != '=') {
LOG << "input mismatch (2), input = " << buf << endl;
continue;
}
ev.set_ip(instr_address);
ss.clear();
ss.str(dummy + 2);
ss >> dec >> cycle;
if (!ss) {
LOG << "input mismatch (3), input = " << buf << endl;
continue;
}
if (cycle - prev_cycle > 0) {
ev.set_time_delta(cycle - prev_cycle);
prev_cycle = cycle;
} else if (cycle - prev_cycle < 0) {
LOG << "ignoring time discontinuity " << dec << prev_cycle << " -> " << cycle << endl;
prev_cycle = cycle;
}
m_ps.writeMessage(&ev);
}
return true;
}