diff options
Diffstat (limited to 'src/cpu/exetrace.cc')
-rw-r--r-- | src/cpu/exetrace.cc | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/cpu/exetrace.cc b/src/cpu/exetrace.cc index 9d85311bb..80b144e85 100644 --- a/src/cpu/exetrace.cc +++ b/src/cpu/exetrace.cc @@ -33,6 +33,8 @@ #include <fstream> #include <iomanip> +#include <sys/ipc.h> +#include <sys/shm.h> #include "arch/regfile.hh" #include "base/loader/symtab.hh" @@ -44,10 +46,15 @@ //XXX This is temporary #include "arch/isa_specific.hh" +#include "cpu/m5legion_interface.h" using namespace std; using namespace TheISA; +namespace Trace { +SharedData *shared_data = NULL; +} + //////////////////////////////////////////////////////////////////////// // // Methods for the InstRecord object @@ -60,6 +67,7 @@ Trace::InstRecord::dump(ostream &outs) if (flags[PRINT_REG_DELTA]) { #if THE_ISA == SPARC_ISA +#if 0 //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()) @@ -121,6 +129,7 @@ Trace::InstRecord::dump(ostream &outs) outs << endl; } #endif +#endif } else if (flags[INTEL_FORMAT]) { #if FULL_SYSTEM @@ -222,6 +231,65 @@ Trace::InstRecord::dump(ostream &outs) // outs << endl; } + // Compare + if (flags[LEGION_LOCKSTEP]) + { + bool compared = false; + bool diffPC = false; + bool diffInst = false; + bool diffRegs = false; + + while (!compared) { + if (shared_data->flags == OWN_M5) { + if (shared_data->pc != PC) + diffPC = true; + if (shared_data->instruction != staticInst->machInst) + diffInst = true; + for (int i = 0; i < TheISA::NumIntRegs; i++) { + if (thread->readIntReg(i) != shared_data->intregs[i]) + diffRegs = true; + } + + if (diffPC || diffInst || diffRegs ) { + outs << "Differences found between M5 and Legion:"; + if (diffPC) + outs << " PC"; + if (diffInst) + outs << " Instruction"; + if (diffRegs) + outs << " IntRegs"; + outs << endl; + + outs << "M5 PC: " << setw(20) << "0x" << hex << PC; + outs << "Legion PC: " << setw(20) << "0x" << hex << + shared_data->pc << endl; + + + + outs << "M5 Instruction: " << staticInst->machInst << "(" + << staticInst->disassemble(PC, debugSymbolTable) + << ")" << "Legion Instruction: " << + shared_data->instruction << "(" + /*<< legionInst->disassemble(shared_data->pc, + debugSymbolTable)*/ + << ")" << endl; + + for (int i = 0; i < TheISA::NumIntRegs; i++) { + outs << setw(16) << "0x" << hex << thread->readIntReg(i) + << setw(16) << "0x" << hex << shared_data->intregs[i]; + + if (thread->readIntReg(i) != shared_data->intregs[i]) + outs << "<--- Different"; + outs << endl; + } + } + + compared = true; + shared_data->flags = OWN_LEGION; + } + } + + } } @@ -271,6 +339,9 @@ 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"); @@ -296,7 +367,28 @@ Trace::InstRecord::setParams() 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(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); + + } } void |