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120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
//===-- HexagonMCExpr.cpp - Hexagon specific MC expression classes
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//----------===//
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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 "HexagonMCExpr.h"
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#include "llvm/BinaryFormat/ELF.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSymbolELF.h"
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#include "llvm/MC/MCValue.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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#define DEBUG_TYPE "hexagon-mcexpr"
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HexagonMCExpr *HexagonMCExpr::create(MCExpr const *Expr, MCContext &Ctx) {
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return new (Ctx) HexagonMCExpr(Expr);
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}
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bool HexagonMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
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MCAsmLayout const *Layout,
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MCFixup const *Fixup) const {
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return Expr->evaluateAsRelocatable(Res, Layout, Fixup);
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}
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void HexagonMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
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Streamer.visitUsedExpr(*Expr);
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}
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MCFragment *llvm::HexagonMCExpr::findAssociatedFragment() const {
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return Expr->findAssociatedFragment();
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}
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static void fixELFSymbolsInTLSFixupsImpl(const MCExpr *Expr, MCAssembler &Asm) {
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switch (Expr->getKind()) {
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case MCExpr::Target:
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llvm_unreachable("Cannot handle nested target MCExpr");
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break;
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case MCExpr::Constant:
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break;
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case MCExpr::Binary: {
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const MCBinaryExpr *be = cast<MCBinaryExpr>(Expr);
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fixELFSymbolsInTLSFixupsImpl(be->getLHS(), Asm);
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fixELFSymbolsInTLSFixupsImpl(be->getRHS(), Asm);
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break;
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}
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case MCExpr::SymbolRef: {
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const MCSymbolRefExpr &symRef = *cast<MCSymbolRefExpr>(Expr);
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switch (symRef.getKind()) {
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default:
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return;
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case MCSymbolRefExpr::VK_Hexagon_GD_GOT:
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case MCSymbolRefExpr::VK_Hexagon_LD_GOT:
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case MCSymbolRefExpr::VK_Hexagon_GD_PLT:
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case MCSymbolRefExpr::VK_Hexagon_LD_PLT:
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case MCSymbolRefExpr::VK_Hexagon_IE:
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case MCSymbolRefExpr::VK_Hexagon_IE_GOT:
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case MCSymbolRefExpr::VK_TPREL:
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break;
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}
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cast<MCSymbolELF>(symRef.getSymbol()).setType(ELF::STT_TLS);
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break;
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}
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case MCExpr::Unary:
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fixELFSymbolsInTLSFixupsImpl(cast<MCUnaryExpr>(Expr)->getSubExpr(), Asm);
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break;
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}
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}
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void HexagonMCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {
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auto expr = getExpr();
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fixELFSymbolsInTLSFixupsImpl(expr, Asm);
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}
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MCExpr const *HexagonMCExpr::getExpr() const { return Expr; }
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void HexagonMCExpr::setMustExtend(bool Val) {
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assert((!Val || !MustNotExtend) && "Extension contradiction");
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MustExtend = Val;
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}
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bool HexagonMCExpr::mustExtend() const { return MustExtend; }
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void HexagonMCExpr::setMustNotExtend(bool Val) {
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assert((!Val || !MustExtend) && "Extension contradiction");
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MustNotExtend = Val;
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}
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bool HexagonMCExpr::mustNotExtend() const { return MustNotExtend; }
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bool HexagonMCExpr::s27_2_reloc() const { return S27_2_reloc; }
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void HexagonMCExpr::setS27_2_reloc(bool Val) {
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S27_2_reloc = Val;
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}
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bool HexagonMCExpr::classof(MCExpr const *E) {
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return E->getKind() == MCExpr::Target;
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}
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HexagonMCExpr::HexagonMCExpr(MCExpr const *Expr)
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: Expr(Expr), MustNotExtend(false), MustExtend(false), S27_2_reloc(false),
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SignMismatch(false) {}
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void HexagonMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
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Expr->print(OS, MAI);
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}
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void HexagonMCExpr::setSignMismatch(bool Val) {
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SignMismatch = Val;
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}
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bool HexagonMCExpr::signMismatch() const {
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return SignMismatch;
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}
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