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//===- RustWrapper.cpp - Rust wrapper for core functions --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines alternate interfaces to core functions that are more
// readily callable by Rust's FFI.
//
//===----------------------------------------------------------------------===//
#include "llvm/Linker.h"
#include "llvm/PassManager.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetSelect.h"
#include "llvm/Target/TargetRegistry.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Host.h"
#include "llvm-c/Core.h"
#include "llvm-c/BitReader.h"
#include "llvm-c/Object.h"
#include <cstdlib>
using namespace llvm;
static const char *LLVMRustError;
extern "C" LLVMMemoryBufferRef
LLVMRustCreateMemoryBufferWithContentsOfFile(const char *Path) {
LLVMMemoryBufferRef MemBuf = NULL;
LLVMCreateMemoryBufferWithContentsOfFile(Path, &MemBuf,
const_cast<char **>(&LLVMRustError));
return MemBuf;
}
extern "C" const char *LLVMRustGetLastError(void) {
return LLVMRustError;
}
extern "C" void LLVMAddBasicAliasAnalysisPass(LLVMPassManagerRef PM);
extern "C" void LLVMAddStandardModulePasses(LLVMPassManagerRef PM,
unsigned int OptimizationLevel, bool OptimizeSize, bool UnitAtATime,
bool UnrollLoops, bool SimplifyLibCalls,
unsigned int InliningThreshold);
int *RustHackToFetchPassesO = (int*)LLVMAddBasicAliasAnalysisPass;
int *RustHackToFetchPasses2O = (int*)LLVMAddStandardModulePasses;
enum LLVMCodeGenFileType {
LLVMAssemblyFile,
LLVMObjectFile,
LLVMNullFile // Do not emit any output.
};
extern "C" bool LLVMLinkModules(LLVMModuleRef Dest, LLVMModuleRef Src) {
static std::string err;
// For some strange reason, unwrap() doesn't work here. "No matching
// function" error.
Module *DM = reinterpret_cast<Module *>(Dest);
Module *SM = reinterpret_cast<Module *>(Src);
if (Linker::LinkModules(DM, SM, &err)) {
LLVMRustError = err.c_str();
return false;
}
return true;
}
extern "C" void LLVMRustWriteOutputFile(LLVMPassManagerRef PMR,
LLVMModuleRef M,
const char *triple,
const char *path,
LLVMCodeGenFileType FileType) {
// Set compilation options.
llvm::NoFramePointerElim = true;
InitializeAllTargets();
InitializeAllAsmPrinters();
InitializeAllAsmParsers();
TargetMachine::setRelocationModel(Reloc::PIC_);
std::string Err;
const Target *TheTarget = TargetRegistry::lookupTarget(triple, Err);
std::string FeaturesStr;
TargetMachine *Target = TheTarget->createTargetMachine(triple, FeaturesStr);
bool NoVerify = false;
CodeGenOpt::Level OLvl = CodeGenOpt::Default;
PassManager *PM = unwrap<PassManager>(PMR);
std::string ErrorInfo;
raw_fd_ostream OS(path, ErrorInfo,
raw_fd_ostream::F_Binary);
formatted_raw_ostream FOS(OS);
TargetMachine::CodeGenFileType FileType2 =
static_cast<TargetMachine::CodeGenFileType>(FileType);
bool foo = Target->addPassesToEmitFile(*PM, FOS, FileType2, OLvl, NoVerify);
assert(!foo);
(void)foo;
PM->run(*unwrap(M));
delete Target;
}
extern "C" LLVMModuleRef LLVMRustParseBitcode(LLVMMemoryBufferRef MemBuf) {
LLVMModuleRef M;
return LLVMParseBitcode(MemBuf, &M, const_cast<char **>(&LLVMRustError))
? NULL : M;
}
extern "C" const char *LLVMRustGetHostTriple(void)
{
static std::string str = llvm::sys::getHostTriple();
return str.c_str();
}
extern "C" LLVMValueRef LLVMRustConstSmallInt(LLVMTypeRef IntTy, unsigned N,
LLVMBool SignExtend) {
return LLVMConstInt(IntTy, (unsigned long long)N, SignExtend);
}
extern bool llvm::TimePassesIsEnabled;
extern "C" void LLVMRustEnableTimePasses() {
TimePassesIsEnabled = true;
}
extern "C" void LLVMRustPrintPassTimings() {
raw_fd_ostream OS (2, false); // stderr.
TimerGroup::printAll(OS);
}
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