1 files changed, 183 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/ExecutionEngine/Orc/ExecutorProcessControl.cpp b/contrib/llvm-project/llvm/lib/ExecutionEngine/Orc/ExecutorProcessControl.cpp
new file mode 100644
index 000000000000..7d86d125d1db
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/ExecutionEngine/Orc/ExecutorProcessControl.cpp
@@ -0,0 +1,183 @@
+//===---- ExecutorProcessControl.cpp -- Executor 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/ExecutorProcessControl.h"
+
+#include "llvm/ExecutionEngine/Orc/Core.h"
+#include "llvm/ExecutionEngine/Orc/TargetProcess/TargetExecutionUtils.h"
+#include "llvm/Support/FormatVariadic.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Process.h"
+
+#define DEBUG_TYPE "orc"
+
+namespace llvm {
+namespace orc {
+
+ExecutorProcessControl::MemoryAccess::~MemoryAccess() {}
+
+ExecutorProcessControl::~ExecutorProcessControl() {}
+
+SelfExecutorProcessControl::SelfExecutorProcessControl(
+    std::shared_ptr<SymbolStringPool> SSP, Triple TargetTriple,
+    unsigned PageSize, std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr)
+    : ExecutorProcessControl(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;
+  this->JDI = {ExecutorAddress::fromPtr(jitDispatchViaWrapperFunctionManager),
+               ExecutorAddress::fromPtr(this)};
+  if (this->TargetTriple.isOSBinFormatMachO())
+    GlobalManglingPrefix = '_';
+}
+
+Expected<std::unique_ptr<SelfExecutorProcessControl>>
+SelfExecutorProcessControl::Create(
+    std::shared_ptr<SymbolStringPool> SSP,
+    std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr) {
+
+  if (!SSP)
+    SSP = std::make_shared<SymbolStringPool>();
+
+  auto PageSize = sys::Process::getPageSize();
+  if (!PageSize)
+    return PageSize.takeError();
+
+  Triple TT(sys::getProcessTriple());
+
+  return std::make_unique<SelfExecutorProcessControl>(
+      std::move(SSP), std::move(TT), *PageSize, std::move(MemMgr));
+}
+
+Expected<tpctypes::DylibHandle>
+SelfExecutorProcessControl::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>>
+SelfExecutorProcessControl::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>
+SelfExecutorProcessControl::runAsMain(JITTargetAddress MainFnAddr,
+                                      ArrayRef<std::string> Args) {
+  using MainTy = int (*)(int, char *[]);
+  return orc::runAsMain(jitTargetAddressToFunction<MainTy>(MainFnAddr), Args);
+}
+
+void SelfExecutorProcessControl::callWrapperAsync(
+    SendResultFunction SendResult, JITTargetAddress WrapperFnAddr,
+    ArrayRef<char> ArgBuffer) {
+  using WrapperFnTy =
+      shared::detail::CWrapperFunctionResult (*)(const char *Data, size_t Size);
+  auto *WrapperFn = jitTargetAddressToFunction<WrapperFnTy>(WrapperFnAddr);
+  SendResult(WrapperFn(ArgBuffer.data(), ArgBuffer.size()));
+}
+
+Error SelfExecutorProcessControl::disconnect() { return Error::success(); }
+
+void SelfExecutorProcessControl::writeUInt8s(ArrayRef<tpctypes::UInt8Write> Ws,
+                                             WriteResultFn OnWriteComplete) {
+  for (auto &W : Ws)
+    *jitTargetAddressToPointer<uint8_t *>(W.Address) = W.Value;
+  OnWriteComplete(Error::success());
+}
+
+void SelfExecutorProcessControl::writeUInt16s(
+    ArrayRef<tpctypes::UInt16Write> Ws, WriteResultFn OnWriteComplete) {
+  for (auto &W : Ws)
+    *jitTargetAddressToPointer<uint16_t *>(W.Address) = W.Value;
+  OnWriteComplete(Error::success());
+}
+
+void SelfExecutorProcessControl::writeUInt32s(
+    ArrayRef<tpctypes::UInt32Write> Ws, WriteResultFn OnWriteComplete) {
+  for (auto &W : Ws)
+    *jitTargetAddressToPointer<uint32_t *>(W.Address) = W.Value;
+  OnWriteComplete(Error::success());
+}
+
+void SelfExecutorProcessControl::writeUInt64s(
+    ArrayRef<tpctypes::UInt64Write> Ws, WriteResultFn OnWriteComplete) {
+  for (auto &W : Ws)
+    *jitTargetAddressToPointer<uint64_t *>(W.Address) = W.Value;
+  OnWriteComplete(Error::success());
+}
+
+void SelfExecutorProcessControl::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());
+}
+
+shared::detail::CWrapperFunctionResult
+SelfExecutorProcessControl::jitDispatchViaWrapperFunctionManager(
+    void *Ctx, const void *FnTag, const char *Data, size_t Size) {
+
+  LLVM_DEBUG({
+    dbgs() << "jit-dispatch call with tag " << FnTag << " and " << Size
+           << " byte payload.\n";
+  });
+
+  std::promise<shared::WrapperFunctionResult> ResultP;
+  auto ResultF = ResultP.get_future();
+  static_cast<SelfExecutorProcessControl *>(Ctx)
+      ->getExecutionSession()
+      .runJITDispatchHandler(
+          [ResultP = std::move(ResultP)](
+              shared::WrapperFunctionResult Result) mutable {
+            ResultP.set_value(std::move(Result));
+          },
+          pointerToJITTargetAddress(FnTag), {Data, Size});
+
+  return ResultF.get().release();
+}
+
+} // end namespace orc
+} // end namespace llvm