mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-13 20:32:21 +00:00
c72c617a4e
compile on windows. This patch was contributed by Paolo Invernizzi. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16539 91177308-0d34-0410-b5e6-96231b3b80d8
97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
//===-- DynamicLinker.cpp - Implement DynamicLinker interface -------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Lightweight interface to dynamic library linking and loading, and dynamic
|
|
// symbol lookup functionality, in whatever form the operating system
|
|
// provides it.
|
|
//
|
|
// Possible future extensions include support for the HPUX shl_load()
|
|
// interface, and the Mac OS X NSLinkModule() interface.
|
|
//
|
|
// Note that we assume that if dlopen() is available, then dlsym() is too.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/DynamicLinker.h"
|
|
#include "llvm/Config/dlfcn.h"
|
|
#include "llvm/Config/windows.h"
|
|
#include <vector>
|
|
#include <cassert>
|
|
#include <cstdio>
|
|
using namespace llvm;
|
|
|
|
#if defined(HAVE_WINDOWS_H)
|
|
// getLoadedLibs - Keep track of the shared objects that are loaded into the
|
|
// process address space, as the windows GetProcAddress function does not
|
|
// automatically search an entire address space, it only searches a specific
|
|
// object.
|
|
static std::vector<HMODULE> &getLoadedLibHandles() {
|
|
static std::vector<HMODULE> *LoadedLibHandles = 0;
|
|
if (LoadedLibHandles == 0) {
|
|
LoadedLibHandles = new std::vector<HMODULE>();
|
|
if (HMODULE H = GetModuleHandle(NULL)) // JIT symbols
|
|
LoadedLibHandles->push_back(H);
|
|
if (HMODULE MH = GetModuleHandle("cygwin1.dll")) // Cygwin symbols OR
|
|
LoadedLibHandles->push_back(MH);
|
|
else if (HMODULE MH = GetModuleHandle("msvcr80.dll")) // VC++ symbols
|
|
LoadedLibHandles->push_back(MH);
|
|
}
|
|
return *LoadedLibHandles;
|
|
}
|
|
#endif
|
|
|
|
bool llvm::LinkDynamicObject(const char *filename, std::string *ErrorMessage) {
|
|
#if defined(HAVE_WINDOWS_H)
|
|
if (HMODULE Handle = LoadLibrary(filename)) {
|
|
// Allow GetProcAddress in this module
|
|
getLoadedLibHandles().push_back(Handle);
|
|
return false;
|
|
}
|
|
if (ErrorMessage) {
|
|
char Buffer[100];
|
|
// FIXME: This should use FormatMessage
|
|
sprintf(Buffer, "Windows error code %d\n", GetLastError());
|
|
*ErrorMessage = Buffer;
|
|
}
|
|
return true;
|
|
#elif defined (HAVE_DLOPEN)
|
|
if (dlopen (filename, RTLD_NOW | RTLD_GLOBAL) == 0) {
|
|
if (ErrorMessage) *ErrorMessage = dlerror ();
|
|
return true;
|
|
}
|
|
return false;
|
|
#else
|
|
assert (0 && "Dynamic object linking not implemented for this platform");
|
|
#endif
|
|
}
|
|
|
|
void *llvm::GetAddressOfSymbol(const char *symbolName) {
|
|
#if defined(HAVE_WINDOWS_H)
|
|
std::vector<HMODULE> &LH = getLoadedLibHandles();
|
|
for (unsigned i = 0, e = LH.size(); i != e; ++i)
|
|
if (void *Val = (void*)GetProcAddress(LH[i], symbolName))
|
|
return Val;
|
|
return 0;
|
|
#elif defined(HAVE_DLOPEN)
|
|
# ifdef RTLD_DEFAULT
|
|
return dlsym (RTLD_DEFAULT, symbolName);
|
|
# else
|
|
static void* CurHandle = dlopen(0, RTLD_LAZY);
|
|
return dlsym(CurHandle, symbolName);
|
|
# endif
|
|
#else
|
|
assert (0 && "Dynamic symbol lookup not implemented for this platform");
|
|
#endif
|
|
}
|
|
|
|
// soft, cushiony C++ interface.
|
|
void *llvm::GetAddressOfSymbol(const std::string &symbolName) {
|
|
return GetAddressOfSymbol(symbolName.c_str());
|
|
}
|