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CPU: Add trace log to file support

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This commit is contained in:
Connor McLaughlin
2019-11-04 00:55:07 +10:00
parent 9de9cf3be2
commit 4a6f283484
3 changed files with 49 additions and 0 deletions
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38
src/core/cpu_core.cpp
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@ -6,7 +6,33 @@
Log_SetChannel(CPU::Core);
namespace CPU {
bool TRACE_EXECUTION = false;
bool LOG_EXECUTION = false;
void WriteToExecutionLog(const char* format, ...)
{
static std::FILE* log_file = nullptr;
static bool log_file_opened = false;
std::va_list ap;
va_start(ap, format);
if (!log_file_opened)
{
log_file = std::fopen("cpu_log.txt", "wb");
log_file_opened = true;
}
if (log_file)
{
std::vfprintf(log_file, format, ap);
std::fflush(log_file);
}
va_end(ap);
}
Core::Core() = default;
@ -495,6 +521,14 @@ static void PrintInstruction(u32 bits, u32 pc, Core* state)
std::printf("%08x: %08x %s\n", pc, bits, instr.GetCharArray());
}
static void LogInstruction(u32 bits, u32 pc, Core* state)
{
TinyString instr;
DisassembleInstruction(&instr, pc, bits, state);
WriteToExecutionLog("%08x: %08x %s\n", pc, bits, instr.GetCharArray());
}
static constexpr bool AddOverflow(u32 old_value, u32 add_value, u32 new_value)
{
return (((new_value ^ old_value) & (new_value ^ add_value)) & UINT32_C(0x80000000)) != 0;
@ -596,8 +630,12 @@ void Core::ExecuteInstruction()
}
#endif
#ifdef _DEBUG
if (TRACE_EXECUTION)
PrintInstruction(inst.bits, m_current_instruction_pc, this);
if (LOG_EXECUTION)
LogInstruction(inst.bits, m_current_instruction_pc, this);
#endif
switch (inst.op)
{