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      1 //===-- MipsMCSymbolRefExpr.cpp - Mips 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 #define DEBUG_TYPE "mipsmcsymbolrefexpr"
     11 #include "MipsMCSymbolRefExpr.h"
     12 #include "llvm/MC/MCAssembler.h"
     13 #include "llvm/MC/MCContext.h"
     14 #include "llvm/MC/MCSymbol.h"
     15 using namespace llvm;
     16 
     17 const MipsMCSymbolRefExpr*
     18 MipsMCSymbolRefExpr::Create(VariantKind Kind, const MCSymbol *Symbol,
     19                             int Offset, MCContext &Ctx) {
     20   return new (Ctx) MipsMCSymbolRefExpr(Kind, Symbol, Offset);
     21 }
     22 
     23 void MipsMCSymbolRefExpr::PrintImpl(raw_ostream &OS) const {
     24   switch (Kind) {
     25   default: assert(0 && "Invalid kind!");
     26   case VK_Mips_None:     break;
     27   case VK_Mips_GPREL:    OS << "%gp_rel("; break;
     28   case VK_Mips_GOT_CALL: OS << "%call16("; break;
     29   case VK_Mips_GOT:      OS << "%got(";    break;
     30   case VK_Mips_ABS_HI:   OS << "%hi(";     break;
     31   case VK_Mips_ABS_LO:   OS << "%lo(";     break;
     32   case VK_Mips_TLSGD:    OS << "%tlsgd(";  break;
     33   case VK_Mips_GOTTPREL: OS << "%gottprel("; break;
     34   case VK_Mips_TPREL_HI: OS << "%tprel_hi("; break;
     35   case VK_Mips_TPREL_LO: OS << "%tprel_lo("; break;
     36   case VK_Mips_GPOFF_HI: OS << "%hi(%neg(%gp_rel("; break;
     37   case VK_Mips_GPOFF_LO: OS << "%lo(%neg(%gp_rel("; break;
     38   case VK_Mips_GOT_DISP: OS << "%got_disp("; break;
     39   case VK_Mips_GOT_PAGE: OS << "%got_page("; break;
     40   case VK_Mips_GOT_OFST: OS << "%got_ofst("; break;
     41   }
     42 
     43   OS << *Symbol;
     44 
     45   if (Offset) {
     46     if (Offset > 0)
     47       OS << '+';
     48     OS << Offset;
     49   }
     50 
     51   if (Kind == VK_Mips_GPOFF_HI || Kind == VK_Mips_GPOFF_LO)
     52     OS << ")))";
     53   else if (Kind != VK_Mips_None)
     54     OS << ')';
     55 }
     56 
     57 bool
     58 MipsMCSymbolRefExpr::EvaluateAsRelocatableImpl(MCValue &Res,
     59                                               const MCAsmLayout *Layout) const {
     60   return false;
     61 }
     62 
     63 void MipsMCSymbolRefExpr::AddValueSymbols(MCAssembler *Asm) const {
     64   Asm->getOrCreateSymbolData(*Symbol);
     65 }
     66 
     67 const MCSection *MipsMCSymbolRefExpr::FindAssociatedSection() const {
     68   return Symbol->isDefined() ? &Symbol->getSection() : NULL;
     69 }
     70 
     71