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