1 //===-- Nios2MCExpr.cpp - Nios2 specific MC expression classes ------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "Nios2.h"
11
12 #include "Nios2MCExpr.h"
13 #include "llvm/MC/MCAsmInfo.h"
14 #include "llvm/MC/MCAssembler.h"
15 #include "llvm/MC/MCContext.h"
16 #include "llvm/MC/MCObjectStreamer.h"
17 #include "llvm/MC/MCSymbolELF.h"
18
19 using namespace llvm;
20
21 #define DEBUG_TYPE "nios2mcexpr"
22
create(Nios2MCExpr::Nios2ExprKind Kind,const MCExpr * Expr,MCContext & Ctx)23 const Nios2MCExpr *Nios2MCExpr::create(Nios2MCExpr::Nios2ExprKind Kind,
24 const MCExpr *Expr, MCContext &Ctx) {
25 return new (Ctx) Nios2MCExpr(Kind, Expr);
26 }
27
create(const MCSymbol * Symbol,Nios2MCExpr::Nios2ExprKind Kind,MCContext & Ctx)28 const Nios2MCExpr *Nios2MCExpr::create(const MCSymbol *Symbol,
29 Nios2MCExpr::Nios2ExprKind Kind,
30 MCContext &Ctx) {
31 const MCSymbolRefExpr *MCSym =
32 MCSymbolRefExpr::create(Symbol, MCSymbolRefExpr::VK_None, Ctx);
33 return new (Ctx) Nios2MCExpr(Kind, MCSym);
34 }
35
printImpl(raw_ostream & OS,const MCAsmInfo * MAI) const36 void Nios2MCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
37
38 switch (Kind) {
39 case CEK_None:
40 case CEK_Special:
41 llvm_unreachable("CEK_None and CEK_Special are invalid");
42 break;
43 case CEK_ABS_HI:
44 OS << "%hiadj";
45 break;
46 case CEK_ABS_LO:
47 OS << "%lo";
48 break;
49 }
50
51 OS << '(';
52 Expr->print(OS, MAI, true);
53 OS << ')';
54 }
55
evaluateAsRelocatableImpl(MCValue & Res,const MCAsmLayout * Layout,const MCFixup * Fixup) const56 bool Nios2MCExpr::evaluateAsRelocatableImpl(MCValue &Res,
57 const MCAsmLayout *Layout,
58 const MCFixup *Fixup) const {
59 return getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup);
60 }
61
visitUsedExpr(MCStreamer & Streamer) const62 void Nios2MCExpr::visitUsedExpr(MCStreamer &Streamer) const {
63 Streamer.visitUsedExpr(*getSubExpr());
64 }
65
fixELFSymbolsInTLSFixups(MCAssembler & Asm) const66 void Nios2MCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {
67 switch (getKind()) {
68 case CEK_None:
69 case CEK_Special:
70 llvm_unreachable("CEK_None and CEK_Special are invalid");
71 break;
72 case CEK_ABS_HI:
73 case CEK_ABS_LO:
74 break;
75 }
76 }
77