forked from OSchip/llvm-project
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
//===-------------- ELF.cpp - JIT linker function for ELF -------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// ELF jit-link function.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/JITLink/ELF.h"
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#include "llvm/BinaryFormat/ELF.h"
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#include "llvm/ExecutionEngine/JITLink/ELF_x86_64.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include <cstring>
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using namespace llvm;
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#define DEBUG_TYPE "jitlink"
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namespace llvm {
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namespace jitlink {
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void jitLink_ELF(std::unique_ptr<JITLinkContext> Ctx) {
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// We don't want to do full ELF validation here. We just verify it is elf'ish.
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// Probably should parse into an elf header when we support more than x86 :)
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StringRef Data = Ctx->getObjectBuffer().getBuffer();
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if (Data.size() < llvm::ELF::EI_MAG3 + 1) {
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Ctx->notifyFailed(make_error<JITLinkError>("Truncated ELF buffer"));
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return;
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}
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if (!memcmp(Data.data(), llvm::ELF::ElfMagic, strlen(llvm::ELF::ElfMagic))) {
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if (Data.data()[llvm::ELF::EI_CLASS] == ELF::ELFCLASS64) {
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return jitLink_ELF_x86_64(std::move(Ctx));
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}
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}
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Ctx->notifyFailed(make_error<JITLinkError>("ELF magic not valid"));
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}
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} // end namespace jitlink
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} // end namespace llvm
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