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//===------ TargetProcessControl.cpp -- Target process control APIs -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ExecutionEngine/Orc/TargetProcessControl.h"
#include "llvm/ExecutionEngine/Orc/Core.h"
#include "llvm/ExecutionEngine/Orc/TargetProcess/TargetExecutionUtils.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/Process.h"
#include <mutex>
namespace llvm {
namespace orc {
TargetProcessControl::MemoryAccess::~MemoryAccess() {}
TargetProcessControl::~TargetProcessControl() {}
SelfTargetProcessControl::SelfTargetProcessControl(
std::shared_ptr<SymbolStringPool> SSP, Triple TargetTriple,
unsigned PageSize, std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr)
: TargetProcessControl(std::move(SSP)) {
OwnedMemMgr = std::move(MemMgr);
if (!OwnedMemMgr)
OwnedMemMgr = std::make_unique<jitlink::InProcessMemoryManager>();
this->TargetTriple = std::move(TargetTriple);
this->PageSize = PageSize;
this->MemMgr = OwnedMemMgr.get();
this->MemAccess = this;
if (this->TargetTriple.isOSBinFormatMachO())
GlobalManglingPrefix = '_';
}
Expected<std::unique_ptr<SelfTargetProcessControl>>
SelfTargetProcessControl::Create(
std::shared_ptr<SymbolStringPool> SSP,
std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr) {
auto PageSize = sys::Process::getPageSize();
if (!PageSize)
return PageSize.takeError();
Triple TT(sys::getProcessTriple());
return std::make_unique<SelfTargetProcessControl>(
std::move(SSP), std::move(TT), *PageSize, std::move(MemMgr));
}
Expected<tpctypes::DylibHandle>
SelfTargetProcessControl::loadDylib(const char *DylibPath) {
std::string ErrMsg;
auto Dylib = std::make_unique<sys::DynamicLibrary>(
sys::DynamicLibrary::getPermanentLibrary(DylibPath, &ErrMsg));
if (!Dylib->isValid())
return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode());
DynamicLibraries.push_back(std::move(Dylib));
return pointerToJITTargetAddress(DynamicLibraries.back().get());
}
Expected<std::vector<tpctypes::LookupResult>>
SelfTargetProcessControl::lookupSymbols(ArrayRef<LookupRequest> Request) {
std::vector<tpctypes::LookupResult> R;
for (auto &Elem : Request) {
auto *Dylib = jitTargetAddressToPointer<sys::DynamicLibrary *>(Elem.Handle);
assert(llvm::any_of(DynamicLibraries,
[=](const std::unique_ptr<sys::DynamicLibrary> &DL) {
return DL.get() == Dylib;
}) &&
"Invalid handle");
R.push_back(std::vector<JITTargetAddress>());
for (auto &KV : Elem.Symbols) {
auto &Sym = KV.first;
std::string Tmp((*Sym).data() + !!GlobalManglingPrefix,
(*Sym).size() - !!GlobalManglingPrefix);
void *Addr = Dylib->getAddressOfSymbol(Tmp.c_str());
if (!Addr && KV.second == SymbolLookupFlags::RequiredSymbol) {
// FIXME: Collect all failing symbols before erroring out.
SymbolNameVector MissingSymbols;
MissingSymbols.push_back(Sym);
return make_error<SymbolsNotFound>(std::move(MissingSymbols));
}
R.back().push_back(pointerToJITTargetAddress(Addr));
}
}
return R;
}
Expected<int32_t>
SelfTargetProcessControl::runAsMain(JITTargetAddress MainFnAddr,
ArrayRef<std::string> Args) {
using MainTy = int (*)(int, char *[]);
return orc::runAsMain(jitTargetAddressToFunction<MainTy>(MainFnAddr), Args);
}
Expected<tpctypes::WrapperFunctionResult>
SelfTargetProcessControl::runWrapper(JITTargetAddress WrapperFnAddr,
ArrayRef<uint8_t> ArgBuffer) {
using WrapperFnTy =
tpctypes::CWrapperFunctionResult (*)(const uint8_t *Data, uint64_t Size);
auto *WrapperFn = jitTargetAddressToFunction<WrapperFnTy>(WrapperFnAddr);
return WrapperFn(ArgBuffer.data(), ArgBuffer.size());
}
Error SelfTargetProcessControl::disconnect() { return Error::success(); }
void SelfTargetProcessControl::writeUInt8s(ArrayRef<tpctypes::UInt8Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint8_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeUInt16s(ArrayRef<tpctypes::UInt16Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint16_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeUInt32s(ArrayRef<tpctypes::UInt32Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint32_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeUInt64s(ArrayRef<tpctypes::UInt64Write> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
*jitTargetAddressToPointer<uint64_t *>(W.Address) = W.Value;
OnWriteComplete(Error::success());
}
void SelfTargetProcessControl::writeBuffers(ArrayRef<tpctypes::BufferWrite> Ws,
WriteResultFn OnWriteComplete) {
for (auto &W : Ws)
memcpy(jitTargetAddressToPointer<char *>(W.Address), W.Buffer.data(),
W.Buffer.size());
OnWriteComplete(Error::success());
}
} // end namespace orc
} // end namespace llvm
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