1 //===-- HexagonMCExpr.cpp - Hexagon specific MC expression classes
4 // The LLVM Compiler Infrastructure
6 // This file is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #include "HexagonMCExpr.h"
12 #include "llvm/BinaryFormat/ELF.h"
13 #include "llvm/MC/MCContext.h"
14 #include "llvm/MC/MCStreamer.h"
15 #include "llvm/MC/MCSymbolELF.h"
16 #include "llvm/MC/MCValue.h"
17 #include "llvm/Support/raw_ostream.h"
21 #define DEBUG_TYPE "hexagon-mcexpr"
23 HexagonMCExpr *HexagonMCExpr::create(MCExpr const *Expr, MCContext &Ctx) {
24 return new (Ctx) HexagonMCExpr(Expr);
27 bool HexagonMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
28 MCAsmLayout const *Layout,
29 MCFixup const *Fixup) const {
30 return Expr->evaluateAsRelocatable(Res, Layout, Fixup);
33 void HexagonMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
34 Streamer.visitUsedExpr(*Expr);
37 MCFragment *llvm::HexagonMCExpr::findAssociatedFragment() const {
38 return Expr->findAssociatedFragment();
41 static void fixELFSymbolsInTLSFixupsImpl(const MCExpr *Expr, MCAssembler &Asm) {
42 switch (Expr->getKind()) {
44 llvm_unreachable("Cannot handle nested target MCExpr");
46 case MCExpr::Constant:
49 case MCExpr::Binary: {
50 const MCBinaryExpr *be = cast<MCBinaryExpr>(Expr);
51 fixELFSymbolsInTLSFixupsImpl(be->getLHS(), Asm);
52 fixELFSymbolsInTLSFixupsImpl(be->getRHS(), Asm);
55 case MCExpr::SymbolRef: {
56 const MCSymbolRefExpr &symRef = *cast<MCSymbolRefExpr>(Expr);
57 switch (symRef.getKind()) {
60 case MCSymbolRefExpr::VK_Hexagon_GD_GOT:
61 case MCSymbolRefExpr::VK_Hexagon_LD_GOT:
62 case MCSymbolRefExpr::VK_Hexagon_GD_PLT:
63 case MCSymbolRefExpr::VK_Hexagon_LD_PLT:
64 case MCSymbolRefExpr::VK_Hexagon_IE:
65 case MCSymbolRefExpr::VK_Hexagon_IE_GOT:
66 case MCSymbolRefExpr::VK_TPREL:
69 cast<MCSymbolELF>(symRef.getSymbol()).setType(ELF::STT_TLS);
73 fixELFSymbolsInTLSFixupsImpl(cast<MCUnaryExpr>(Expr)->getSubExpr(), Asm);
78 void HexagonMCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {
79 auto expr = getExpr();
80 fixELFSymbolsInTLSFixupsImpl(expr, Asm);
83 MCExpr const *HexagonMCExpr::getExpr() const { return Expr; }
85 void HexagonMCExpr::setMustExtend(bool Val) {
86 assert((!Val || !MustNotExtend) && "Extension contradiction");
90 bool HexagonMCExpr::mustExtend() const { return MustExtend; }
91 void HexagonMCExpr::setMustNotExtend(bool Val) {
92 assert((!Val || !MustExtend) && "Extension contradiction");
95 bool HexagonMCExpr::mustNotExtend() const { return MustNotExtend; }
97 bool HexagonMCExpr::s27_2_reloc() const { return S27_2_reloc; }
98 void HexagonMCExpr::setS27_2_reloc(bool Val) {
102 bool HexagonMCExpr::classof(MCExpr const *E) {
103 return E->getKind() == MCExpr::Target;
106 HexagonMCExpr::HexagonMCExpr(MCExpr const *Expr)
107 : Expr(Expr), MustNotExtend(false), MustExtend(false), S27_2_reloc(false),
108 SignMismatch(false) {}
110 void HexagonMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
111 Expr->print(OS, MAI);
114 void HexagonMCExpr::setSignMismatch(bool Val) {
118 bool HexagonMCExpr::signMismatch() const {