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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
//----------------------------------------------------------
// SuperPMI-Shim.cpp - thin shim for the jit
//----------------------------------------------------------
#include "standardpch.h"
#include "superpmi-shim-simple.h"
#include "runtimedetails.h"
#include "coreclrcallbacks.h"
#include "icorjitcompiler.h"
#include "errorhandling.h"
#include "logging.h"
#include "spmiutil.h"
#include "jithost.h"
HMODULE g_hRealJit = 0; //We leak this currently (could do the proper shutdown in process_detach)
WCHAR* g_realJitPath = nullptr; //We leak this (could do the proper shutdown in process_detach)
char* g_logFilePath = nullptr; //We *don't* leak this, hooray!
WCHAR* g_HomeDirectory = nullptr;
WCHAR* g_DefaultRealJitPath = nullptr;
void SetDefaultPaths()
{
if (g_HomeDirectory == nullptr)
{
g_HomeDirectory = GetEnvironmentVariableWithDefaultW(W("HOME"), W("."));
}
if (g_DefaultRealJitPath == nullptr)
{
size_t len = wcslen(g_HomeDirectory) + 1 + wcslen(DEFAULT_REAL_JIT_NAME_W) + 1;
g_DefaultRealJitPath = new WCHAR[len];
wcscpy_s(g_DefaultRealJitPath, len, g_HomeDirectory);
wcscat_s(g_DefaultRealJitPath, len, DIRECTORY_SEPARATOR_STR_W);
wcscat_s(g_DefaultRealJitPath, len, DEFAULT_REAL_JIT_NAME_W);
}
}
void SetLibName()
{
if (g_realJitPath == nullptr)
{
g_realJitPath = GetEnvironmentVariableWithDefaultW(W("SuperPMIShimPath"), g_DefaultRealJitPath);
}
}
// TODO: this only works for ANSI file paths...
void SetLogFilePath()
{
if (g_logFilePath == nullptr)
{
// If the environment variable isn't set, we don't enable file logging
g_logFilePath = GetEnvironmentVariableWithDefaultA("SuperPMIShimLogFilePath", nullptr);
}
}
extern "C"
BOOL
#ifndef FEATURE_PAL
APIENTRY
#endif // !FEATURE_PAL
DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
#ifdef FEATURE_PAL
if (0 != PAL_InitializeDLL())
{
fprintf(stderr, "Error: Fail to PAL_InitializeDLL\n");
exit(1);
}
#endif // FEATURE_PAL
Logger::Initialize();
SetLogFilePath();
Logger::OpenLogFile(g_logFilePath);
break;
case DLL_PROCESS_DETACH:
Logger::Shutdown();
delete[] g_logFilePath;
g_logFilePath = nullptr;
break;
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
break;
}
return TRUE;
}
// Exported via def file
extern "C"
void __stdcall jitStartup(ICorJitHost* host)
{
SetDefaultPaths();
SetLibName();
//Load Library
if (g_hRealJit == 0)
{
g_hRealJit = ::LoadLibraryW(g_realJitPath);
if (g_hRealJit == 0)
{
LogError("getJit() - LoadLibrary failed to load '%ws' (0x%08x)", g_realJitPath, ::GetLastError());
return;
}
}
// Get the required entrypoint
PjitStartup pnjitStartup = (PjitStartup)::GetProcAddress(g_hRealJit, "jitStartup");
if (pnjitStartup == nullptr)
{
// This portion of the interface is not used by the JIT under test.
g_ourJitHost = nullptr;
return;
}
g_ourJitHost = new JitHost(host);
pnjitStartup(g_ourJitHost);
}
//Exported via def file
extern "C"
ICorJitCompiler* __stdcall getJit()
{
DWORD dwRetVal = 0;
PgetJit pngetJit;
interceptor_ICJC *pJitInstance = nullptr;
ICorJitCompiler *tICJI = nullptr;
SetDefaultPaths();
SetLibName();
//Load Library
if(g_hRealJit == 0)
{
g_hRealJit = ::LoadLibraryW(g_realJitPath);
if(g_hRealJit == 0)
{
LogError("getJit() - LoadLibrary failed to load '%ws' (0x%08x)", g_realJitPath, ::GetLastError());
return nullptr;
}
}
//get the required entrypoints
pngetJit = (PgetJit)::GetProcAddress(g_hRealJit, "getJit");
if(pngetJit == 0)
{
LogError("getJit() - GetProcAddress 'getJit' failed (0x%08x)", ::GetLastError());
return nullptr;
}
tICJI = pngetJit();
if(tICJI == nullptr)
{
LogError("getJit() - pngetJit gave us null");
return nullptr;
}
pJitInstance = new interceptor_ICJC();
pJitInstance->original_ICorJitCompiler = tICJI;
return pJitInstance;
}
//Exported via def file
extern "C"
void __stdcall sxsJitStartup(CoreClrCallbacks const & original_cccallbacks)
{
PsxsJitStartup pnsxsJitStartup;
SetDefaultPaths();
SetLibName();
//Load Library
if(g_hRealJit == 0)
{
g_hRealJit = ::LoadLibraryW(g_realJitPath);
if(g_hRealJit == 0)
{
LogError("sxsJitStartup() - LoadLibrary failed to load '%ws' (0x%08x)", g_realJitPath, ::GetLastError());
return;
}
}
//get entry point
pnsxsJitStartup = (PsxsJitStartup)::GetProcAddress(g_hRealJit, "sxsJitStartup");
if(pnsxsJitStartup == 0)
{
LogError("sxsJitStartup() - GetProcAddress 'sxsJitStartup' failed (0x%08x)", ::GetLastError());
return;
}
//Setup CoreClrCallbacks and call sxsJitStartup
original_CoreClrCallbacks = new CoreClrCallbacks();
original_CoreClrCallbacks->m_hmodCoreCLR = original_cccallbacks.m_hmodCoreCLR;
original_CoreClrCallbacks->m_pfnIEE = original_cccallbacks.m_pfnIEE;
original_CoreClrCallbacks->m_pfnGetCORSystemDirectory = original_cccallbacks.m_pfnGetCORSystemDirectory;
original_CoreClrCallbacks->m_pfnGetCLRFunction = original_cccallbacks.m_pfnGetCLRFunction;
CoreClrCallbacks *temp = new CoreClrCallbacks();
temp->m_hmodCoreCLR = original_cccallbacks.m_hmodCoreCLR;
temp->m_pfnIEE = IEE_t;
temp->m_pfnGetCORSystemDirectory = original_cccallbacks.m_pfnGetCORSystemDirectory;
temp->m_pfnGetCLRFunction = GetCLRFunction;
pnsxsJitStartup(*temp);
}
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