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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT | ||
// file at the top-level directory of this distribution and at | ||
// http://rust-lang.org/COPYRIGHT. | ||
// | ||
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | ||
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | ||
// option. This file may not be copied, modified, or distributed | ||
// except according to those terms. | ||
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#include "rustllvm.h" | ||
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#include "llvm/ExecutionEngine/SectionMemoryManager.h" | ||
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using namespace llvm; | ||
using namespace llvm::sys; | ||
using namespace llvm::object; | ||
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class RustJITMemoryManager : public SectionMemoryManager | ||
{ | ||
typedef SectionMemoryManager Base; | ||
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const void *morestack; | ||
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public: | ||
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RustJITMemoryManager(const void *morestack_ptr) | ||
: morestack(morestack_ptr) | ||
{} | ||
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uint64_t getSymbolAddress(const std::string &Name) override | ||
{ | ||
if (Name == "__morestack" || Name == "___morestack") | ||
return reinterpret_cast<uint64_t>(morestack); | ||
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return Base::getSymbolAddress(Name); | ||
} | ||
}; | ||
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DEFINE_SIMPLE_CONVERSION_FUNCTIONS(RustJITMemoryManager, LLVMRustJITMemoryManagerRef) | ||
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extern "C" LLVMRustJITMemoryManagerRef LLVMRustCreateJITMemoryManager(void *morestack) | ||
{ | ||
return wrap(new RustJITMemoryManager(morestack)); | ||
} | ||
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extern "C" LLVMBool LLVMRustLoadDynamicLibrary(const char *path) | ||
{ | ||
std::string err; | ||
DynamicLibrary lib = DynamicLibrary::getPermanentLibrary(path, &err); | ||
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if (!lib.isValid()) | ||
LLVMRustSetLastError(err.c_str()); | ||
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return lib.isValid(); | ||
} | ||
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// Calls LLVMAddModule; | ||
// exists for consistency with LLVMExecutionEngineRemoveModule | ||
extern "C" void LLVMExecutionEngineAddModule( | ||
LLVMExecutionEngineRef eeref, LLVMModuleRef mref) | ||
{ | ||
LLVMAddModule(eeref, mref); | ||
} | ||
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// LLVMRemoveModule exists in LLVM's C bindings, | ||
// but it requires pointless parameters | ||
extern "C" LLVMBool LLVMExecutionEngineRemoveModule( | ||
LLVMExecutionEngineRef eeref, LLVMModuleRef mref) | ||
{ | ||
ExecutionEngine *ee = unwrap(eeref); | ||
Module *m = unwrap(mref); | ||
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return ee->removeModule(m); | ||
} | ||
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extern "C" LLVMExecutionEngineRef LLVMBuildExecutionEngine( | ||
LLVMModuleRef mod, LLVMRustJITMemoryManagerRef mref) | ||
{ | ||
// These are necessary for code generation to work properly. | ||
InitializeNativeTarget(); | ||
InitializeNativeTargetAsmPrinter(); | ||
InitializeNativeTargetAsmParser(); | ||
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std::unique_ptr<Module> m(unwrap(mod)); | ||
RustJITMemoryManager *mm = unwrap(mref); | ||
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std::string error_str; | ||
TargetOptions options; | ||
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options.JITEmitDebugInfo = true; | ||
options.NoFramePointerElim = true; | ||
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ExecutionEngine *ee = EngineBuilder(std::move(m)) | ||
.setEngineKind(EngineKind::JIT) | ||
.setErrorStr(&error_str) | ||
.setMCJITMemoryManager(mm) | ||
.setTargetOptions(options) | ||
.create(); | ||
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if (!ee) | ||
LLVMRustSetLastError(error_str.c_str()); | ||
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return wrap(ee); | ||
} | ||
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extern "C" void LLVMExecutionEngineFinalizeObject(LLVMExecutionEngineRef eeref) | ||
{ | ||
ExecutionEngine *ee = unwrap(eeref); | ||
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ee->finalizeObject(); | ||
} |
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