mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
85046901b8
of being unable to search for symbols in an EXE. It will also allow other existing hacks to be improved. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25805 91177308-0d34-0410-b5e6-96231b3b80d8
133 lines
3.9 KiB
C++
133 lines
3.9 KiB
C++
//===- Win32/DynamicLibrary.cpp - Win32 DL Implementation -------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by Jeff Cohen and is distributed under the
|
|
// University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file provides the Win32 specific implementation of DynamicLibrary.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Win32.h"
|
|
|
|
#ifdef __MINGW32__
|
|
#include <imagehlp.h>
|
|
#else
|
|
#include <dbghelp.h>
|
|
#endif
|
|
|
|
#pragma comment(lib, "dbghelp.lib")
|
|
|
|
namespace llvm {
|
|
using namespace sys;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
//=== WARNING: Implementation here must contain only Win32 specific code
|
|
//=== and must not be UNIX code.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static std::vector<HMODULE> OpenedHandles;
|
|
|
|
extern "C" {
|
|
static BOOL CALLBACK ELM_Callback(PSTR ModuleName,
|
|
ULONG ModuleBase,
|
|
ULONG ModuleSize,
|
|
PVOID UserContext)
|
|
{
|
|
// Ignore VC++ runtimes prior to 7.1. Somehow some of them get loaded
|
|
// into the process.
|
|
if (stricmp(ModuleName, "msvci70") != 0 &&
|
|
stricmp(ModuleName, "msvcirt") != 0 &&
|
|
stricmp(ModuleName, "msvcp50") != 0 &&
|
|
stricmp(ModuleName, "msvcp60") != 0 &&
|
|
stricmp(ModuleName, "msvcp70") != 0 &&
|
|
stricmp(ModuleName, "msvcr70") != 0 &&
|
|
stricmp(ModuleName, "msvcrt") != 0 &&
|
|
stricmp(ModuleName, "msvcrt20") != 0 &&
|
|
stricmp(ModuleName, "msvcrt40") != 0) {
|
|
OpenedHandles.push_back((HMODULE)ModuleBase);
|
|
}
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
DynamicLibrary::DynamicLibrary() : handle(0) {
|
|
handle = GetModuleHandle(NULL);
|
|
OpenedHandles.push_back((HMODULE)handle);
|
|
}
|
|
|
|
DynamicLibrary::DynamicLibrary(const char*filename) : handle(0) {
|
|
HMODULE a_handle = LoadLibrary(filename);
|
|
|
|
if (a_handle == 0)
|
|
ThrowError(std::string(filename) + ": Can't open : ");
|
|
|
|
handle = a_handle;
|
|
OpenedHandles.push_back(a_handle);
|
|
}
|
|
|
|
DynamicLibrary::~DynamicLibrary() {
|
|
if (handle == 0)
|
|
return;
|
|
|
|
// GetModuleHandle() does not increment the ref count, so we must not free
|
|
// the handle to the executable.
|
|
if (handle != GetModuleHandle(NULL))
|
|
FreeLibrary((HMODULE)handle);
|
|
handle = 0;
|
|
|
|
for (std::vector<HMODULE>::iterator I = OpenedHandles.begin(),
|
|
E = OpenedHandles.end(); I != E; ++I) {
|
|
if (*I == handle) {
|
|
// Note: don't use the swap/pop_back trick here. Order is important.
|
|
OpenedHandles.erase(I);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DynamicLibrary::LoadLibraryPermanently(const char* filename) {
|
|
if (filename) {
|
|
HMODULE a_handle = LoadLibrary(filename);
|
|
|
|
if (a_handle == 0)
|
|
ThrowError(std::string(filename) + ": Can't open : ");
|
|
|
|
OpenedHandles.push_back(a_handle);
|
|
} else {
|
|
// When no file is specified, enumerate all DLLs and EXEs in the
|
|
// process.
|
|
EnumerateLoadedModules(GetCurrentProcess(), ELM_Callback, 0);
|
|
}
|
|
|
|
// Because we don't remember the handle, we will never free it; hence,
|
|
// it is loaded permanently.
|
|
}
|
|
|
|
void* DynamicLibrary::SearchForAddressOfSymbol(const char* symbolName) {
|
|
// First check symbols added via AddSymbol().
|
|
std::map<std::string, void *>::iterator I = g_symbols.find(symbolName);
|
|
if (I != g_symbols.end())
|
|
return I->second;
|
|
|
|
// Now search the libraries.
|
|
for (std::vector<HMODULE>::iterator I = OpenedHandles.begin(),
|
|
E = OpenedHandles.end(); I != E; ++I) {
|
|
FARPROC ptr = GetProcAddress((HMODULE)*I, symbolName);
|
|
if (ptr)
|
|
return (void *) ptr;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void *DynamicLibrary::GetAddressOfSymbol(const char *symbolName) {
|
|
assert(handle != 0 && "Invalid DynamicLibrary handle");
|
|
return (void *) GetProcAddress((HMODULE)handle, symbolName);
|
|
}
|
|
|
|
}
|
|
|