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Add simple function-tracing support. Prints a message

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every time the committed PC changes from one symbol scope
to another.
Set function_trace=y on target CPU to enable.
To defer start, use function_trace_start=<tick>
(in addition to setting function_trace=y).

cpu/base_cpu.cc:
cpu/base_cpu.hh:
    Add simple function-tracing support.
cpu/simple_cpu/simple_cpu.cc:
    Add function_trace, function_trace_start params
    Call traceFunctions() on instruction completion
cpu/simple_cpu/simple_cpu.hh:
    Add function_trace, function_trace_start params

--HG--
extra : convert_revision : 8a7f84028ccbaee585253629007f32fc8eae35e1
This commit is contained in:
Steve Reinhardt
2004-11-16 17:20:38 -05:00
parent 34b2014463
commit c9b0204e28
4 changed files with 110 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
cpu/base_cpu.hh
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@@ -95,16 +95,18 @@ class BaseCPU : public SimObject
BaseCPU(const std::string &_name, int _number_of_threads, bool _def_reg,
Counter max_insts_any_thread, Counter max_insts_all_threads,
Counter max_loads_any_thread, Counter max_loads_all_threads,
System *_system, Tick freq);
System *_system, Tick freq,
bool _function_trace = false, Tick _function_trace_start = 0);
#else
BaseCPU(const std::string &_name, int _number_of_threads, bool _def_reg,
Counter max_insts_any_thread = 0,
Counter max_insts_all_threads = 0,
Counter max_loads_any_thread = 0,
Counter max_loads_all_threads = 0);
Counter max_loads_all_threads = 0,
bool _function_trace = false, Tick _function_trace_start = 0);
#endif
virtual ~BaseCPU() {}
virtual ~BaseCPU();
virtual void init();
virtual void regStats();
@@ -166,6 +168,23 @@ class BaseCPU : public SimObject
virtual Counter totalInstructions() const { return 0; }
// Function tracing
private:
bool functionTracingEnabled;
std::ostream *functionTraceStream;
Addr currentFunctionStart;
Addr currentFunctionEnd;
Tick functionEntryTick;
void enableFunctionTrace();
void traceFunctionsInternal(Addr pc);
protected:
void traceFunctions(Addr pc)
{
if (functionTracingEnabled)
traceFunctionsInternal(pc);
}
private:
static std::vector<BaseCPU *> cpuList; //!< Static global cpu list