Files
dolphin/Source/Core/Core/PowerPC/JitInterface.cpp
Lioncash d40022d6d0 JitInterface: Move explanatory comment of ClearSafe() to the function's prototype
Puts the comment in the header where it's more likely to be seen
initially. We can also remove the TODO, given doing nothing or returning
an error is what is generally done for the JIT interface if the JIT
instance isn't valid.
2018-08-27 13:04:05 -04:00

271 lines
6.4 KiB
C++

// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "Core/PowerPC/JitInterface.h"
#include <algorithm>
#include <cinttypes>
#include <cstdio>
#include <string>
#include <unordered_set>
#ifdef _WIN32
#include <windows.h>
#else
#include "Common/PerformanceCounter.h"
#endif
#include "Common/ChunkFile.h"
#include "Common/CommonTypes.h"
#include "Common/File.h"
#include "Common/MsgHandler.h"
#include "Core/Core.h"
#include "Core/PowerPC/CPUCoreBase.h"
#include "Core/PowerPC/CachedInterpreter/CachedInterpreter.h"
#include "Core/PowerPC/JitCommon/JitBase.h"
#include "Core/PowerPC/MMU.h"
#include "Core/PowerPC/PPCSymbolDB.h"
#include "Core/PowerPC/PowerPC.h"
#include "Core/PowerPC/Profiler.h"
#if _M_X86
#include "Core/PowerPC/Jit64/Jit.h"
#endif
#if _M_ARM_64
#include "Core/PowerPC/JitArm64/Jit.h"
#endif
namespace JitInterface
{
void DoState(PointerWrap& p)
{
if (g_jit && p.GetMode() == PointerWrap::MODE_READ)
g_jit->ClearCache();
}
CPUCoreBase* InitJitCore(PowerPC::CPUCore core)
{
switch (core)
{
#if _M_X86
case PowerPC::CPUCore::JIT64:
g_jit = new Jit64();
break;
#endif
#if _M_ARM_64
case PowerPC::CPUCore::JITARM64:
g_jit = new JitArm64();
break;
#endif
case PowerPC::CPUCore::CachedInterpreter:
g_jit = new CachedInterpreter();
break;
default:
PanicAlertT("The selected CPU emulation core (%d) is not available. "
"Please select a different CPU emulation core in the settings.",
static_cast<int>(core));
g_jit = nullptr;
return nullptr;
}
g_jit->Init();
return g_jit;
}
CPUCoreBase* GetCore()
{
return g_jit;
}
void SetProfilingState(ProfilingState state)
{
if (!g_jit)
return;
g_jit->jo.profile_blocks = state == ProfilingState::Enabled;
}
void WriteProfileResults(const std::string& filename)
{
Profiler::ProfileStats prof_stats;
GetProfileResults(&prof_stats);
File::IOFile f(filename, "w");
if (!f)
{
PanicAlert("Failed to open %s", filename.c_str());
return;
}
fprintf(f.GetHandle(), "origAddr\tblkName\trunCount\tcost\ttimeCost\tpercent\ttimePercent\tOvAlli"
"nBlkTime(ms)\tblkCodeSize\n");
for (auto& stat : prof_stats.block_stats)
{
std::string name = g_symbolDB.GetDescription(stat.addr);
double percent = 100.0 * (double)stat.cost / (double)prof_stats.cost_sum;
double timePercent = 100.0 * (double)stat.tick_counter / (double)prof_stats.timecost_sum;
fprintf(f.GetHandle(),
"%08x\t%s\t%" PRIu64 "\t%" PRIu64 "\t%" PRIu64 "\t%.2f\t%.2f\t%.2f\t%i\n", stat.addr,
name.c_str(), stat.run_count, stat.cost, stat.tick_counter, percent, timePercent,
(double)stat.tick_counter * 1000.0 / (double)prof_stats.countsPerSec, stat.block_size);
}
}
void GetProfileResults(Profiler::ProfileStats* prof_stats)
{
// Can't really do this with no g_jit core available
if (!g_jit)
return;
prof_stats->cost_sum = 0;
prof_stats->timecost_sum = 0;
prof_stats->block_stats.clear();
Core::State old_state = Core::GetState();
if (old_state == Core::State::Running)
Core::SetState(Core::State::Paused);
QueryPerformanceFrequency((LARGE_INTEGER*)&prof_stats->countsPerSec);
g_jit->GetBlockCache()->RunOnBlocks([&prof_stats](const JitBlock& block) {
const auto& data = block.profile_data;
u64 cost = data.downcountCounter;
u64 timecost = data.ticCounter;
// Todo: tweak.
if (data.runCount >= 1)
prof_stats->block_stats.emplace_back(block.effectiveAddress, cost, timecost, data.runCount,
block.codeSize);
prof_stats->cost_sum += cost;
prof_stats->timecost_sum += timecost;
});
sort(prof_stats->block_stats.begin(), prof_stats->block_stats.end());
if (old_state == Core::State::Running)
Core::SetState(Core::State::Running);
}
int GetHostCode(u32* address, const u8** code, u32* code_size)
{
if (!g_jit)
{
*code_size = 0;
return 1;
}
JitBlock* block = g_jit->GetBlockCache()->GetBlockFromStartAddress(*address, MSR.Hex);
if (!block)
{
for (int i = 0; i < 500; i++)
{
block = g_jit->GetBlockCache()->GetBlockFromStartAddress(*address - 4 * i, MSR.Hex);
if (block)
break;
}
if (block)
{
if (!(block->effectiveAddress <= *address &&
block->originalSize + block->effectiveAddress >= *address))
block = nullptr;
}
// Do not merge this "if" with the above - block_num changes inside it.
if (!block)
{
*code_size = 0;
return 2;
}
}
*code = block->checkedEntry;
*code_size = block->codeSize;
*address = block->effectiveAddress;
return 0;
}
bool HandleFault(uintptr_t access_address, SContext* ctx)
{
// Prevent nullptr dereference on a crash with no JIT present
if (!g_jit)
{
return false;
}
return g_jit->HandleFault(access_address, ctx);
}
bool HandleStackFault()
{
if (!g_jit)
{
return false;
}
return g_jit->HandleStackFault();
}
void ClearCache()
{
if (g_jit)
g_jit->ClearCache();
}
void ClearSafe()
{
if (g_jit)
g_jit->GetBlockCache()->Clear();
}
void InvalidateICache(u32 address, u32 size, bool forced)
{
if (g_jit)
g_jit->GetBlockCache()->InvalidateICache(address, size, forced);
}
void CompileExceptionCheck(ExceptionType type)
{
if (!g_jit)
return;
std::unordered_set<u32>* exception_addresses = nullptr;
switch (type)
{
case ExceptionType::FIFOWrite:
exception_addresses = &g_jit->js.fifoWriteAddresses;
break;
case ExceptionType::PairedQuantize:
exception_addresses = &g_jit->js.pairedQuantizeAddresses;
break;
case ExceptionType::SpeculativeConstants:
exception_addresses = &g_jit->js.noSpeculativeConstantsAddresses;
break;
}
if (PC != 0 && (exception_addresses->find(PC)) == (exception_addresses->end()))
{
if (type == ExceptionType::FIFOWrite)
{
// Check in case the code has been replaced since: do we need to do this?
const OpType optype = PPCTables::GetOpInfo(PowerPC::HostRead_U32(PC))->type;
if (optype != OpType::Store && optype != OpType::StoreFP && optype != OpType::StorePS)
return;
}
exception_addresses->insert(PC);
// Invalidate the JIT block so that it gets recompiled with the external exception check
// included.
g_jit->GetBlockCache()->InvalidateICache(PC, 4, true);
}
}
void Shutdown()
{
if (g_jit)
{
g_jit->Shutdown();
delete g_jit;
g_jit = nullptr;
}
}
}