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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/LLVMContext.h"
#include "llvm/Linker.h"
#include "llvm/PassManager.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Assembly/Parser.h"
#include "llvm/Assembly/PrintModulePass.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/SourceMgr.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 LLVMRustAddPrintModulePass(LLVMPassManagerRef PMR,
LLVMModuleRef M,
const char* path) {
PassManager *PM = unwrap<PassManager>(PMR);
std::string ErrorInfo;
raw_fd_ostream OS(path, ErrorInfo, raw_fd_ostream::F_Binary);
formatted_raw_ostream FOS(OS);
PM->add(createPrintModulePass(&FOS));
PM->run(*unwrap(M));
}
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, Linker::DestroySource, &err)) {
LLVMRustError = err.c_str();
return false;
}
return true;
}
extern "C" void
LLVMRustWriteOutputFile(LLVMPassManagerRef PMR,
LLVMModuleRef M,
const char *triple,
const char *path,
TargetMachine::CodeGenFileType FileType,
CodeGenOpt::Level OptLevel,
bool EnableSegmentedStacks) {
InitializeAllTargets();
InitializeAllTargetMCs();
InitializeAllAsmPrinters();
InitializeAllAsmParsers();
TargetOptions Options;
Options.NoFramePointerElim = true;
Options.EnableSegmentedStacks = EnableSegmentedStacks;
std::string Err;
const Target *TheTarget = TargetRegistry::lookupTarget(triple, Err);
std::string FeaturesStr;
std::string Trip(triple);
std::string CPUStr("generic");
TargetMachine *Target =
TheTarget->createTargetMachine(Trip, CPUStr, FeaturesStr,
Options, Reloc::PIC_,
CodeModel::Default, OptLevel);
bool NoVerify = false;
PassManager *PM = unwrap<PassManager>(PMR);
std::string ErrorInfo;
raw_fd_ostream OS(path, ErrorInfo,
raw_fd_ostream::F_Binary);
formatted_raw_ostream FOS(OS);
bool foo = Target->addPassesToEmitFile(*PM, FOS, FileType, NoVerify);
assert(!foo);
(void)foo;
PM->run(*unwrap(M));
delete Target;
}
extern "C" LLVMModuleRef LLVMRustParseAssemblyFile(const char *Filename) {
SMDiagnostic d;
Module *m = ParseAssemblyFile(Filename, d, getGlobalContext());
if (m) {
return wrap(m);
} else {
LLVMRustError = d.getMessage().c_str();
return NULL;
}
}
extern "C" LLVMModuleRef LLVMRustParseBitcode(LLVMMemoryBufferRef MemBuf) {
LLVMModuleRef M;
return LLVMParseBitcode(MemBuf, &M, const_cast<char **>(&LLVMRustError))
? NULL : M;
}
extern "C" LLVMValueRef LLVMRustConstSmallInt(LLVMTypeRef IntTy, unsigned N,
LLVMBool SignExtend) {
return LLVMConstInt(IntTy, (unsigned long long)N, SignExtend);
}
extern "C" LLVMValueRef LLVMRustConstInt(LLVMTypeRef IntTy,
unsigned N_hi,
unsigned N_lo,
LLVMBool SignExtend) {
unsigned long long N = N_hi;
N <<= 32;
N |= N_lo;
return LLVMConstInt(IntTy, 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);
}
extern "C" LLVMValueRef LLVMGetOrInsertFunction(LLVMModuleRef M,
const char* Name,
LLVMTypeRef FunctionTy) {
return wrap(unwrap(M)->getOrInsertFunction(Name,
unwrap<FunctionType>(FunctionTy)));
}
extern "C" LLVMTypeRef LLVMMetadataTypeInContext(LLVMContextRef C) {
return wrap(Type::getMetadataTy(*unwrap(C)));
}
extern "C" LLVMTypeRef LLVMMetadataType(void) {
return LLVMMetadataTypeInContext(LLVMGetGlobalContext());
}
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