1 //===-- SparcMCExpr.cpp - Sparc 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 // This file contains the implementation of the assembly expression modifiers 11 // accepted by the Sparc architecture (e.g. "%hi", "%lo", ...). 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "SparcMCExpr.h" 16 #include "llvm/MC/MCAssembler.h" 17 #include "llvm/MC/MCContext.h" 18 #include "llvm/MC/MCObjectStreamer.h" 19 #include "llvm/MC/MCSymbolELF.h" 20 #include "llvm/Object/ELF.h" 21 22 using namespace llvm; 23 24 #define DEBUG_TYPE "sparcmcexpr" 25 26 const SparcMCExpr* 27 SparcMCExpr::create(VariantKind Kind, const MCExpr *Expr, 28 MCContext &Ctx) { 29 return new (Ctx) SparcMCExpr(Kind, Expr); 30 } 31 32 void SparcMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const { 33 34 bool closeParen = printVariantKind(OS, Kind); 35 36 const MCExpr *Expr = getSubExpr(); 37 Expr->print(OS, MAI); 38 39 if (closeParen) 40 OS << ')'; 41 } 42 43 bool SparcMCExpr::printVariantKind(raw_ostream &OS, VariantKind Kind) 44 { 45 bool closeParen = true; 46 switch (Kind) { 47 case VK_Sparc_None: closeParen = false; break; 48 case VK_Sparc_LO: OS << "%lo("; break; 49 case VK_Sparc_HI: OS << "%hi("; break; 50 case VK_Sparc_H44: OS << "%h44("; break; 51 case VK_Sparc_M44: OS << "%m44("; break; 52 case VK_Sparc_L44: OS << "%l44("; break; 53 case VK_Sparc_HH: OS << "%hh("; break; 54 case VK_Sparc_HM: OS << "%hm("; break; 55 // FIXME: use %pc22/%pc10, if system assembler supports them. 56 case VK_Sparc_PC22: OS << "%hi("; break; 57 case VK_Sparc_PC10: OS << "%lo("; break; 58 // FIXME: use %got22/%got10, if system assembler supports them. 59 case VK_Sparc_GOT22: OS << "%hi("; break; 60 case VK_Sparc_GOT10: OS << "%lo("; break; 61 case VK_Sparc_WPLT30: closeParen = false; break; 62 case VK_Sparc_R_DISP32: OS << "%r_disp32("; break; 63 case VK_Sparc_TLS_GD_HI22: OS << "%tgd_hi22("; break; 64 case VK_Sparc_TLS_GD_LO10: OS << "%tgd_lo10("; break; 65 case VK_Sparc_TLS_GD_ADD: OS << "%tgd_add("; break; 66 case VK_Sparc_TLS_GD_CALL: OS << "%tgd_call("; break; 67 case VK_Sparc_TLS_LDM_HI22: OS << "%tldm_hi22("; break; 68 case VK_Sparc_TLS_LDM_LO10: OS << "%tldm_lo10("; break; 69 case VK_Sparc_TLS_LDM_ADD: OS << "%tldm_add("; break; 70 case VK_Sparc_TLS_LDM_CALL: OS << "%tldm_call("; break; 71 case VK_Sparc_TLS_LDO_HIX22: OS << "%tldo_hix22("; break; 72 case VK_Sparc_TLS_LDO_LOX10: OS << "%tldo_lox10("; break; 73 case VK_Sparc_TLS_LDO_ADD: OS << "%tldo_add("; break; 74 case VK_Sparc_TLS_IE_HI22: OS << "%tie_hi22("; break; 75 case VK_Sparc_TLS_IE_LO10: OS << "%tie_lo10("; break; 76 case VK_Sparc_TLS_IE_LD: OS << "%tie_ld("; break; 77 case VK_Sparc_TLS_IE_LDX: OS << "%tie_ldx("; break; 78 case VK_Sparc_TLS_IE_ADD: OS << "%tie_add("; break; 79 case VK_Sparc_TLS_LE_HIX22: OS << "%tle_hix22("; break; 80 case VK_Sparc_TLS_LE_LOX10: OS << "%tle_lox10("; break; 81 } 82 return closeParen; 83 } 84 85 SparcMCExpr::VariantKind SparcMCExpr::parseVariantKind(StringRef name) 86 { 87 return StringSwitch<SparcMCExpr::VariantKind>(name) 88 .Case("lo", VK_Sparc_LO) 89 .Case("hi", VK_Sparc_HI) 90 .Case("h44", VK_Sparc_H44) 91 .Case("m44", VK_Sparc_M44) 92 .Case("l44", VK_Sparc_L44) 93 .Case("hh", VK_Sparc_HH) 94 .Case("hm", VK_Sparc_HM) 95 .Case("pc22", VK_Sparc_PC22) 96 .Case("pc10", VK_Sparc_PC10) 97 .Case("got22", VK_Sparc_GOT22) 98 .Case("got10", VK_Sparc_GOT10) 99 .Case("r_disp32", VK_Sparc_R_DISP32) 100 .Case("tgd_hi22", VK_Sparc_TLS_GD_HI22) 101 .Case("tgd_lo10", VK_Sparc_TLS_GD_LO10) 102 .Case("tgd_add", VK_Sparc_TLS_GD_ADD) 103 .Case("tgd_call", VK_Sparc_TLS_GD_CALL) 104 .Case("tldm_hi22", VK_Sparc_TLS_LDM_HI22) 105 .Case("tldm_lo10", VK_Sparc_TLS_LDM_LO10) 106 .Case("tldm_add", VK_Sparc_TLS_LDM_ADD) 107 .Case("tldm_call", VK_Sparc_TLS_LDM_CALL) 108 .Case("tldo_hix22", VK_Sparc_TLS_LDO_HIX22) 109 .Case("tldo_lox10", VK_Sparc_TLS_LDO_LOX10) 110 .Case("tldo_add", VK_Sparc_TLS_LDO_ADD) 111 .Case("tie_hi22", VK_Sparc_TLS_IE_HI22) 112 .Case("tie_lo10", VK_Sparc_TLS_IE_LO10) 113 .Case("tie_ld", VK_Sparc_TLS_IE_LD) 114 .Case("tie_ldx", VK_Sparc_TLS_IE_LDX) 115 .Case("tie_add", VK_Sparc_TLS_IE_ADD) 116 .Case("tle_hix22", VK_Sparc_TLS_LE_HIX22) 117 .Case("tle_lox10", VK_Sparc_TLS_LE_LOX10) 118 .Default(VK_Sparc_None); 119 } 120 121 Sparc::Fixups SparcMCExpr::getFixupKind(SparcMCExpr::VariantKind Kind) { 122 switch (Kind) { 123 default: llvm_unreachable("Unhandled SparcMCExpr::VariantKind"); 124 case VK_Sparc_LO: return Sparc::fixup_sparc_lo10; 125 case VK_Sparc_HI: return Sparc::fixup_sparc_hi22; 126 case VK_Sparc_H44: return Sparc::fixup_sparc_h44; 127 case VK_Sparc_M44: return Sparc::fixup_sparc_m44; 128 case VK_Sparc_L44: return Sparc::fixup_sparc_l44; 129 case VK_Sparc_HH: return Sparc::fixup_sparc_hh; 130 case VK_Sparc_HM: return Sparc::fixup_sparc_hm; 131 case VK_Sparc_PC22: return Sparc::fixup_sparc_pc22; 132 case VK_Sparc_PC10: return Sparc::fixup_sparc_pc10; 133 case VK_Sparc_GOT22: return Sparc::fixup_sparc_got22; 134 case VK_Sparc_GOT10: return Sparc::fixup_sparc_got10; 135 case VK_Sparc_WPLT30: return Sparc::fixup_sparc_wplt30; 136 case VK_Sparc_TLS_GD_HI22: return Sparc::fixup_sparc_tls_gd_hi22; 137 case VK_Sparc_TLS_GD_LO10: return Sparc::fixup_sparc_tls_gd_lo10; 138 case VK_Sparc_TLS_GD_ADD: return Sparc::fixup_sparc_tls_gd_add; 139 case VK_Sparc_TLS_GD_CALL: return Sparc::fixup_sparc_tls_gd_call; 140 case VK_Sparc_TLS_LDM_HI22: return Sparc::fixup_sparc_tls_ldm_hi22; 141 case VK_Sparc_TLS_LDM_LO10: return Sparc::fixup_sparc_tls_ldm_lo10; 142 case VK_Sparc_TLS_LDM_ADD: return Sparc::fixup_sparc_tls_ldm_add; 143 case VK_Sparc_TLS_LDM_CALL: return Sparc::fixup_sparc_tls_ldm_call; 144 case VK_Sparc_TLS_LDO_HIX22: return Sparc::fixup_sparc_tls_ldo_hix22; 145 case VK_Sparc_TLS_LDO_LOX10: return Sparc::fixup_sparc_tls_ldo_lox10; 146 case VK_Sparc_TLS_LDO_ADD: return Sparc::fixup_sparc_tls_ldo_add; 147 case VK_Sparc_TLS_IE_HI22: return Sparc::fixup_sparc_tls_ie_hi22; 148 case VK_Sparc_TLS_IE_LO10: return Sparc::fixup_sparc_tls_ie_lo10; 149 case VK_Sparc_TLS_IE_LD: return Sparc::fixup_sparc_tls_ie_ld; 150 case VK_Sparc_TLS_IE_LDX: return Sparc::fixup_sparc_tls_ie_ldx; 151 case VK_Sparc_TLS_IE_ADD: return Sparc::fixup_sparc_tls_ie_add; 152 case VK_Sparc_TLS_LE_HIX22: return Sparc::fixup_sparc_tls_le_hix22; 153 case VK_Sparc_TLS_LE_LOX10: return Sparc::fixup_sparc_tls_le_lox10; 154 } 155 } 156 157 bool 158 SparcMCExpr::evaluateAsRelocatableImpl(MCValue &Res, 159 const MCAsmLayout *Layout, 160 const MCFixup *Fixup) const { 161 return getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup); 162 } 163 164 static void fixELFSymbolsInTLSFixupsImpl(const MCExpr *Expr, MCAssembler &Asm) { 165 switch (Expr->getKind()) { 166 case MCExpr::Target: 167 llvm_unreachable("Can't handle nested target expr!"); 168 break; 169 170 case MCExpr::Constant: 171 break; 172 173 case MCExpr::Binary: { 174 const MCBinaryExpr *BE = cast<MCBinaryExpr>(Expr); 175 fixELFSymbolsInTLSFixupsImpl(BE->getLHS(), Asm); 176 fixELFSymbolsInTLSFixupsImpl(BE->getRHS(), Asm); 177 break; 178 } 179 180 case MCExpr::SymbolRef: { 181 const MCSymbolRefExpr &SymRef = *cast<MCSymbolRefExpr>(Expr); 182 cast<MCSymbolELF>(SymRef.getSymbol()).setType(ELF::STT_TLS); 183 break; 184 } 185 186 case MCExpr::Unary: 187 fixELFSymbolsInTLSFixupsImpl(cast<MCUnaryExpr>(Expr)->getSubExpr(), Asm); 188 break; 189 } 190 191 } 192 193 void SparcMCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const { 194 switch(getKind()) { 195 default: return; 196 case VK_Sparc_TLS_GD_HI22: 197 case VK_Sparc_TLS_GD_LO10: 198 case VK_Sparc_TLS_GD_ADD: 199 case VK_Sparc_TLS_GD_CALL: 200 case VK_Sparc_TLS_LDM_HI22: 201 case VK_Sparc_TLS_LDM_LO10: 202 case VK_Sparc_TLS_LDM_ADD: 203 case VK_Sparc_TLS_LDM_CALL: 204 case VK_Sparc_TLS_LDO_HIX22: 205 case VK_Sparc_TLS_LDO_LOX10: 206 case VK_Sparc_TLS_LDO_ADD: 207 case VK_Sparc_TLS_IE_HI22: 208 case VK_Sparc_TLS_IE_LO10: 209 case VK_Sparc_TLS_IE_LD: 210 case VK_Sparc_TLS_IE_LDX: 211 case VK_Sparc_TLS_IE_ADD: 212 case VK_Sparc_TLS_LE_HIX22: 213 case VK_Sparc_TLS_LE_LOX10: break; 214 } 215 fixELFSymbolsInTLSFixupsImpl(getSubExpr(), Asm); 216 } 217 218 void SparcMCExpr::visitUsedExpr(MCStreamer &Streamer) const { 219 Streamer.visitUsedExpr(*getSubExpr()); 220 } 221