6b1f1eba9d
The fix for tools/convert-trace/Gem5Converter.cc repairs a real issue which caused a runtime warning to never be displayed. Change-Id: I5d94acdbffc99d5f2a78f047062c011c6f8ab4e3
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
#include <sstream>
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#include <string>
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#include "util/Logger.hpp"
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#include "comm/TracePlugin.pb.h"
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#include "Gem5Converter.hpp"
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using namespace fail;
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using std::stringstream;
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using std::endl;
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using std::hex;
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using std::dec;
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static Logger LOG("Gem5Converter", true);
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bool Gem5Converter::convert()
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{
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char buf[2048], dummy[2048];
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int64_t prev_cycle = 0, cycle;
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uint64_t cur_ip = 0;
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bool ifetch_seen = false;
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while (m_input.getline(buf, sizeof(buf))) {
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Trace_Event ev;
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// reset ifetch_seen in case we're getting multiple concatenated gem5 traces
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if (strstr(buf, "http://gem5.org")) {
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ifetch_seen = false;
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continue;
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}
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if (!strstr(buf, "system.physmem") || strstr(buf, "access wrote")) {
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continue;
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}
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// 5000: system.physmem: access wrote 4 bytes to address f7ee8
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// 5000: system.physmem: Write of size 4 on address 0xf7ee8 data 0x61190
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// 6000: system.physmem: IFetch of size 4 on address 0xd58 data 0xe59f000c
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// 6000: system.physmem: Read of size 4 on address 0xd6c data 0x8e2c
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// 161000: system.physmem: 00000000 4c 69 6e 75 78 00 00 00 00 00 00 00 00 00 00 00 Linux
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std::stringstream ss(buf);
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std::string access_type;
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unsigned access_width;
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uint64_t access_address;
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ss >> dec >> cycle >> dummy >> dummy >> access_type
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>> dummy >> dummy >> dec >> access_width
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>> dummy >> dummy >> hex >> access_address;
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if (!ss) {
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if (ifetch_seen && access_type.c_str()[0] != '0') {
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LOG << "input mismatch, input = " << buf << endl;
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}
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continue;
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}
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if (cycle - prev_cycle > 0) {
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ev.set_time_delta(cycle - prev_cycle);
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prev_cycle = cycle;
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} else if (cycle - prev_cycle < 0) {
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LOG << "ignoring time discontinuity " << dec << prev_cycle << " -> " << cycle << endl;
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prev_cycle = cycle;
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}
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if (access_type == "IFetch") {
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ifetch_seen = true;
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cur_ip = access_address;
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ev.set_ip(cur_ip);
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//LOG << "ip = " << hex << cur_ip << endl;
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} else {
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bool is_read;
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if (access_type == "Read") {
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is_read = true;
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} else if (access_type == "Write") {
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is_read = false;
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} else if (access_type.c_str()[0] == '0') {
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continue;
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} else {
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LOG << "input mismatch, input = " << buf << endl;
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continue;
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}
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if (!ifetch_seen) {
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// skip all accesses before the first ifetch
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continue;
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}
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ev.set_ip(cur_ip);
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ev.set_memaddr(access_address);
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ev.set_width(access_width);
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ev.set_accesstype(is_read ? ev.READ : ev.WRITE);
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//cout << "ip = " << hex << cur_ip << " mem " << access_address << " " << access_width << " " << (is_read ? 'R' : 'W') << endl;
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}
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m_ps.writeMessage(&ev);
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}
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return true;
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}
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