llvm-project/llvm/tools/lli/ChildTarget/ChildTarget.cpp

68 lines
1.6 KiB
C++

#include "llvm/ExecutionEngine/Orc/OrcABISupport.h"
#include "llvm/ExecutionEngine/Orc/OrcRemoteTargetServer.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/Process.h"
#include <sstream>
#include "../RemoteJITUtils.h"
using namespace llvm;
using namespace llvm::orc;
using namespace llvm::sys;
#ifdef __x86_64__
typedef OrcX86_64_SysV HostOrcArch;
#else
typedef OrcGenericABI HostOrcArch;
#endif
ExitOnError ExitOnErr;
int main(int argc, char *argv[]) {
if (argc != 3) {
errs() << "Usage: " << argv[0] << " <input fd> <output fd>\n";
return 1;
}
ExitOnErr.setBanner(std::string(argv[0]) + ":");
int InFD;
int OutFD;
{
std::istringstream InFDStream(argv[1]), OutFDStream(argv[2]);
InFDStream >> InFD;
OutFDStream >> OutFD;
}
if (sys::DynamicLibrary::LoadLibraryPermanently(nullptr)) {
errs() << "Error loading program symbols.\n";
return 1;
}
auto SymbolLookup = [](const std::string &Name) {
return RTDyldMemoryManager::getSymbolAddressInProcess(Name);
};
auto RegisterEHFrames = [](uint8_t *Addr, uint32_t Size) {
RTDyldMemoryManager::registerEHFramesInProcess(Addr, Size);
};
auto DeregisterEHFrames = [](uint8_t *Addr, uint32_t Size) {
RTDyldMemoryManager::deregisterEHFramesInProcess(Addr, Size);
};
FDRawChannel Channel(InFD, OutFD);
typedef remote::OrcRemoteTargetServer<FDRawChannel, HostOrcArch> JITServer;
JITServer Server(Channel, SymbolLookup, RegisterEHFrames, DeregisterEHFrames);
while (!Server.receivedTerminate())
ExitOnErr(Server.handleOne());
close(InFD);
close(OutFD);
return 0;
}