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//===----------- OrcCBindings.cpp - C bindings for the Orc APIs -----------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "OrcCBindingsStack.h"
#include "llvm-c/OrcBindings.h"
#include "llvm/ExecutionEngine/JITEventListener.h"

using namespace llvm;

LLVMOrcJITStackRef LLVMOrcCreateInstance(LLVMTargetMachineRef TM) {
  TargetMachine *TM2(unwrap(TM));

  Triple T(TM2->getTargetTriple());

  auto IndirectStubsMgrBuilder =
      orc::createLocalIndirectStubsManagerBuilder(T);

  OrcCBindingsStack *JITStack =
      new OrcCBindingsStack(*TM2, std::move(IndirectStubsMgrBuilder));

  return wrap(JITStack);
}

const char *LLVMOrcGetErrorMsg(LLVMOrcJITStackRef JITStack) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  return J.getErrorMessage().c_str();
}

void LLVMOrcGetMangledSymbol(LLVMOrcJITStackRef JITStack, char **MangledName,
                             const char *SymbolName) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  std::string Mangled = J.mangle(SymbolName);
  *MangledName = new char[Mangled.size() + 1];
  strcpy(*MangledName, Mangled.c_str());
}

void LLVMOrcDisposeMangledSymbol(char *MangledName) { delete[] MangledName; }

LLVMErrorRef LLVMOrcCreateLazyCompileCallback(
    LLVMOrcJITStackRef JITStack, LLVMOrcTargetAddress *RetAddr,
    LLVMOrcLazyCompileCallbackFn Callback, void *CallbackCtx) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  if (auto Addr = J.createLazyCompileCallback(Callback, CallbackCtx)) {
    *RetAddr = *Addr;
    return LLVMErrorSuccess;
  } else
    return wrap(Addr.takeError());
}

LLVMErrorRef LLVMOrcCreateIndirectStub(LLVMOrcJITStackRef JITStack,
                                       const char *StubName,
                                       LLVMOrcTargetAddress InitAddr) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  return wrap(J.createIndirectStub(StubName, InitAddr));
}

LLVMErrorRef LLVMOrcSetIndirectStubPointer(LLVMOrcJITStackRef JITStack,
                                           const char *StubName,
                                           LLVMOrcTargetAddress NewAddr) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  return wrap(J.setIndirectStubPointer(StubName, NewAddr));
}

LLVMErrorRef LLVMOrcAddEagerlyCompiledIR(LLVMOrcJITStackRef JITStack,
                                         LLVMOrcModuleHandle *RetHandle,
                                         LLVMModuleRef Mod,
                                         LLVMOrcSymbolResolverFn SymbolResolver,
                                         void *SymbolResolverCtx) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  std::unique_ptr<Module> M(unwrap(Mod));
  if (auto Handle =
          J.addIRModuleEager(std::move(M), SymbolResolver, SymbolResolverCtx)) {
    *RetHandle = *Handle;
    return LLVMErrorSuccess;
  } else
    return wrap(Handle.takeError());
}

LLVMErrorRef LLVMOrcAddLazilyCompiledIR(LLVMOrcJITStackRef JITStack,
                                        LLVMOrcModuleHandle *RetHandle,
                                        LLVMModuleRef Mod,
                                        LLVMOrcSymbolResolverFn SymbolResolver,
                                        void *SymbolResolverCtx) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  std::unique_ptr<Module> M(unwrap(Mod));
  if (auto Handle =
          J.addIRModuleLazy(std::move(M), SymbolResolver, SymbolResolverCtx)) {
    *RetHandle = *Handle;
    return LLVMErrorSuccess;
  } else
    return wrap(Handle.takeError());
}

LLVMErrorRef LLVMOrcAddObjectFile(LLVMOrcJITStackRef JITStack,
                                  LLVMOrcModuleHandle *RetHandle,
                                  LLVMMemoryBufferRef Obj,
                                  LLVMOrcSymbolResolverFn SymbolResolver,
                                  void *SymbolResolverCtx) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  std::unique_ptr<MemoryBuffer> O(unwrap(Obj));
  if (auto Handle =
          J.addObject(std::move(O), SymbolResolver, SymbolResolverCtx)) {
    *RetHandle = *Handle;
    return LLVMErrorSuccess;
  } else
    return wrap(Handle.takeError());
}

LLVMErrorRef LLVMOrcRemoveModule(LLVMOrcJITStackRef JITStack,
                                 LLVMOrcModuleHandle H) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  return wrap(J.removeModule(H));
}

LLVMErrorRef LLVMOrcGetSymbolAddress(LLVMOrcJITStackRef JITStack,
                                     LLVMOrcTargetAddress *RetAddr,
                                     const char *SymbolName) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  if (auto Addr = J.findSymbolAddress(SymbolName, true)) {
    *RetAddr = *Addr;
    return LLVMErrorSuccess;
  } else
    return wrap(Addr.takeError());
}

LLVMErrorRef LLVMOrcGetSymbolAddressIn(LLVMOrcJITStackRef JITStack,
                                       LLVMOrcTargetAddress *RetAddr,
                                       LLVMOrcModuleHandle H,
                                       const char *SymbolName) {
  OrcCBindingsStack &J = *unwrap(JITStack);
  if (auto Addr = J.findSymbolAddressIn(H, SymbolName, true)) {
    *RetAddr = *Addr;
    return LLVMErrorSuccess;
  } else
    return wrap(Addr.takeError());
}

LLVMErrorRef LLVMOrcDisposeInstance(LLVMOrcJITStackRef JITStack) {
  auto *J = unwrap(JITStack);
  auto Err = J->shutdown();
  delete J;
  return wrap(std::move(Err));
}

void LLVMOrcRegisterJITEventListener(LLVMOrcJITStackRef JITStack, LLVMJITEventListenerRef L)
{
  unwrap(JITStack)->RegisterJITEventListener(unwrap(L));
}

void LLVMOrcUnregisterJITEventListener(LLVMOrcJITStackRef JITStack, LLVMJITEventListenerRef L)
{
  unwrap(JITStack)->UnregisterJITEventListener(unwrap(L));
}