6acd300375
With a fix for http://lab.llvm.org:8011/builders/clang-cmake-armv8-lld/builds/3636 Also trims some unneeded dependencies.
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
//===- X86_64.cpp ---------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Target.h"
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#include "lld/Common/ErrorHandler.h"
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#include "llvm/BinaryFormat/MachO.h"
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#include "llvm/Support/Endian.h"
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using namespace llvm::MachO;
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using namespace llvm::support::endian;
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using namespace lld;
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using namespace lld::macho;
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namespace {
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struct X86_64 : TargetInfo {
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X86_64();
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uint64_t getImplicitAddend(const uint8_t *loc, uint8_t type) const override;
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void relocateOne(uint8_t *loc, uint8_t type, uint64_t val) const override;
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};
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X86_64::X86_64() {
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cpuType = CPU_TYPE_X86_64;
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cpuSubtype = CPU_SUBTYPE_X86_64_ALL;
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}
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uint64_t X86_64::getImplicitAddend(const uint8_t *loc, uint8_t type) const {
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switch (type) {
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case X86_64_RELOC_SIGNED:
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return read32le(loc);
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default:
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error("TODO: Unhandled relocation type " + std::to_string(type));
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return 0;
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}
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}
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void X86_64::relocateOne(uint8_t *loc, uint8_t type, uint64_t val) const {
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switch (type) {
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case X86_64_RELOC_SIGNED:
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// This type is only used for pc-relative relocations, so offset by 4 since
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// the RIP has advanced by 4 at this point.
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write32le(loc, val - 4);
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break;
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default:
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llvm_unreachable(
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"getImplicitAddend should have flagged all unhandled relocation types");
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}
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}
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} // namespace
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TargetInfo *macho::createX86_64TargetInfo() {
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static X86_64 t;
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return &t;
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}
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