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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
//===- PPC.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 "Symbols.h"
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#include "Target.h"
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#include "lld/Common/ErrorHandler.h"
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#include "llvm/Support/Endian.h"
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using namespace llvm;
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using namespace llvm::support::endian;
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using namespace llvm::ELF;
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using namespace lld;
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using namespace lld::elf;
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namespace {
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class PPC final : public TargetInfo {
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public:
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PPC();
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void relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const override;
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RelExpr getRelExpr(RelType Type, const Symbol &S,
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const uint8_t *Loc) const override;
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};
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} // namespace
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PPC::PPC() {
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NoneRel = R_PPC_NONE;
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GotBaseSymOff = 0x8000;
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GotBaseSymInGotPlt = false;
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}
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RelExpr PPC::getRelExpr(RelType Type, const Symbol &S,
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const uint8_t *Loc) const {
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switch (Type) {
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case R_PPC_REL14:
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case R_PPC_REL24:
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case R_PPC_REL32:
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return R_PC;
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case R_PPC_PLTREL24:
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return R_PLT_PC;
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default:
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return R_ABS;
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}
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}
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void PPC::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
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switch (Type) {
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case R_PPC_ADDR16_HA:
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write16be(Loc, (Val + 0x8000) >> 16);
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break;
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case R_PPC_ADDR16_HI:
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write16be(Loc, Val >> 16);
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break;
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case R_PPC_ADDR16_LO:
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write16be(Loc, Val);
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break;
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case R_PPC_ADDR32:
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case R_PPC_REL32:
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write32be(Loc, Val);
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break;
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case R_PPC_REL14:
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write32be(Loc, read32be(Loc) | (Val & 0xFFFC));
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break;
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case R_PPC_PLTREL24:
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case R_PPC_REL24:
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write32be(Loc, read32be(Loc) | (Val & 0x3FFFFFC));
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break;
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default:
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error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type));
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}
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}
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TargetInfo *elf::getPPCTargetInfo() {
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static PPC Target;
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return &Target;
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}
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