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T32SIM: Integrating Tracing feature of the T32SIM.

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After each simulator break, T32Tracer retrieves the latest (16)
trace records from the T32. Memory address and value can now
be evaluated easily from the trace record.

TODO:Nevertheless we still have to traverse the trace to
find the instruction causing the access.
This commit is contained in:
Martin Hoffmann
2013-03-21 17:59:21 +01:00
parent 4e8098a636
commit b8e706b1a5
17 changed files with 270 additions and 26 deletions
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19
debuggers/t32/src/main.cc
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@ -22,6 +22,7 @@
#include "util/optionparser/optionparser_ext.hpp"
#include "T32Connector.hpp"
#include "T32Tracer.hpp"
#include "t32config.hpp"
#include "sal/MemoryInstruction.hpp"
#include "util/Disassembler.hpp"
@ -54,7 +55,6 @@ int main(int argc, char** argv){
option::Option options[stats.options_max], buffer[stats.buffer_max];
option::Parser parse(usage, argc, argv, options, buffer);
return 0;
if (parse.error()){
cerr << "Error parsing arguments." << endl;
return 1;
@ -101,18 +101,27 @@ int main(int argc, char** argv){
MemoryInstruction mem;
address_t ip;
// Enable T32 Tracer (if available)
T32Tracer tr("/tmp/tr.x"); // TODO configurable trace file path
tr.setup(); // enable and configure tracing.
while(1) {
// Start execution (with next timeout, if any)
t32.go();
// Wait for debugger to stop.
while( t32.isRunning() ) {}
// Evaluate state.
t32.test();// TODO
// Call appropriate callback of the SimulatorController.
ip = fail::simulator.getCPU(0).getInstructionPointer();
fail::simulator.onBreakpoint(&fail::simulator.getCPU(0), ip , fail::ANY_ADDR);
if( meminstruction.eval(ip, mem) ) {
fail::simulator.onMemoryAccess(&fail::simulator.getCPU(0), mem.getAddress(), mem.getWidth(), mem.isWriteAccess(), ip );
// Evaluate tracing result, handle memory access event..
if((tr.evaluate() > 0) && (tr.wasDataAccess())){
// TODO: step back in trace and find program counter of the according instruction.
// ip = XXX;
fail::simulator.onMemoryAccess(&fail::simulator.getCPU(0), tr.getLatestRecord().getAddress(), /* TODO access width: */ 4, tr.getLatestRecord().isDataWrite(), ip );
tr.dump();
}
}