1bdd1243dSDimitry Andric //===-- XtensaMCObjectWriter.cpp - Xtensa ELF writer ----------------------===//
2bdd1243dSDimitry Andric //
3bdd1243dSDimitry Andric // The LLVM Compiler Infrastructure
4bdd1243dSDimitry Andric //
5bdd1243dSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
6bdd1243dSDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
7bdd1243dSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8bdd1243dSDimitry Andric //
9bdd1243dSDimitry Andric //===----------------------------------------------------------------------===//
10bdd1243dSDimitry Andric
11bdd1243dSDimitry Andric #include "MCTargetDesc/XtensaMCTargetDesc.h"
12bdd1243dSDimitry Andric #include "llvm/ADT/STLExtras.h"
13bdd1243dSDimitry Andric #include "llvm/BinaryFormat/ELF.h"
14bdd1243dSDimitry Andric #include "llvm/MC/MCELFObjectWriter.h"
15bdd1243dSDimitry Andric #include "llvm/MC/MCExpr.h"
16bdd1243dSDimitry Andric #include "llvm/MC/MCFixup.h"
17bdd1243dSDimitry Andric #include "llvm/MC/MCObjectWriter.h"
18bdd1243dSDimitry Andric #include "llvm/MC/MCValue.h"
19bdd1243dSDimitry Andric #include "llvm/Support/ErrorHandling.h"
20bdd1243dSDimitry Andric #include <cassert>
21bdd1243dSDimitry Andric #include <cstdint>
22bdd1243dSDimitry Andric
23bdd1243dSDimitry Andric using namespace llvm;
24bdd1243dSDimitry Andric
25bdd1243dSDimitry Andric namespace {
26bdd1243dSDimitry Andric class XtensaObjectWriter : public MCELFObjectTargetWriter {
27bdd1243dSDimitry Andric public:
28bdd1243dSDimitry Andric XtensaObjectWriter(uint8_t OSABI);
29bdd1243dSDimitry Andric
30bdd1243dSDimitry Andric virtual ~XtensaObjectWriter();
31bdd1243dSDimitry Andric
32bdd1243dSDimitry Andric protected:
33bdd1243dSDimitry Andric unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
34bdd1243dSDimitry Andric const MCFixup &Fixup, bool IsPCRel) const override;
35*5f757f3fSDimitry Andric bool needsRelocateWithSymbol(const MCValue &Val, const MCSymbol &Sym,
36bdd1243dSDimitry Andric unsigned Type) const override;
37bdd1243dSDimitry Andric };
38bdd1243dSDimitry Andric } // namespace
39bdd1243dSDimitry Andric
XtensaObjectWriter(uint8_t OSABI)40bdd1243dSDimitry Andric XtensaObjectWriter::XtensaObjectWriter(uint8_t OSABI)
41bdd1243dSDimitry Andric : MCELFObjectTargetWriter(false, OSABI, ELF::EM_XTENSA,
42bdd1243dSDimitry Andric /*HasRelocationAddend=*/true) {}
43bdd1243dSDimitry Andric
~XtensaObjectWriter()44bdd1243dSDimitry Andric XtensaObjectWriter::~XtensaObjectWriter() {}
45bdd1243dSDimitry Andric
getRelocType(MCContext & Ctx,const MCValue & Target,const MCFixup & Fixup,bool IsPCRel) const46bdd1243dSDimitry Andric unsigned XtensaObjectWriter::getRelocType(MCContext &Ctx, const MCValue &Target,
47bdd1243dSDimitry Andric const MCFixup &Fixup,
48bdd1243dSDimitry Andric bool IsPCRel) const {
49bdd1243dSDimitry Andric
50bdd1243dSDimitry Andric switch ((unsigned)Fixup.getKind()) {
51bdd1243dSDimitry Andric case FK_Data_4:
52bdd1243dSDimitry Andric return ELF::R_XTENSA_32;
53bdd1243dSDimitry Andric default:
54bdd1243dSDimitry Andric return ELF::R_XTENSA_SLOT0_OP;
55bdd1243dSDimitry Andric }
56bdd1243dSDimitry Andric }
57bdd1243dSDimitry Andric
58bdd1243dSDimitry Andric std::unique_ptr<MCObjectTargetWriter>
createXtensaObjectWriter(uint8_t OSABI,bool IsLittleEndian)59bdd1243dSDimitry Andric llvm::createXtensaObjectWriter(uint8_t OSABI, bool IsLittleEndian) {
60bdd1243dSDimitry Andric return std::make_unique<XtensaObjectWriter>(OSABI);
61bdd1243dSDimitry Andric }
62bdd1243dSDimitry Andric
needsRelocateWithSymbol(const MCValue &,const MCSymbol &,unsigned Type) const63*5f757f3fSDimitry Andric bool XtensaObjectWriter::needsRelocateWithSymbol(const MCValue &,
64*5f757f3fSDimitry Andric const MCSymbol &,
65bdd1243dSDimitry Andric unsigned Type) const {
66bdd1243dSDimitry Andric return false;
67bdd1243dSDimitry Andric }
68