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teak-llvm/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCExpr.cpp
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo 
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

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//===-- SparcMCExpr.cpp - Sparc specific MC expression classes --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains the implementation of the assembly expression modifiers
// accepted by the Sparc architecture (e.g. "%hi", "%lo", ...).
//
//===----------------------------------------------------------------------===//
#include "SparcMCExpr.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCSymbolELF.h"
using namespace llvm;
#define DEBUG_TYPE "sparcmcexpr"
const SparcMCExpr*
SparcMCExpr::create(VariantKind Kind, const MCExpr *Expr,
MCContext &Ctx) {
return new (Ctx) SparcMCExpr(Kind, Expr);
}
void SparcMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
bool closeParen = printVariantKind(OS, Kind);
const MCExpr *Expr = getSubExpr();
Expr->print(OS, MAI);
if (closeParen)
OS << ')';
}
bool SparcMCExpr::printVariantKind(raw_ostream &OS, VariantKind Kind)
{
bool closeParen = true;
switch (Kind) {
case VK_Sparc_None: closeParen = false; break;
case VK_Sparc_LO: OS << "%lo("; break;
case VK_Sparc_HI: OS << "%hi("; break;
case VK_Sparc_H44: OS << "%h44("; break;
case VK_Sparc_M44: OS << "%m44("; break;
case VK_Sparc_L44: OS << "%l44("; break;
case VK_Sparc_HH: OS << "%hh("; break;
case VK_Sparc_HM: OS << "%hm("; break;
// FIXME: use %pc22/%pc10, if system assembler supports them.
case VK_Sparc_PC22: OS << "%hi("; break;
case VK_Sparc_PC10: OS << "%lo("; break;
// FIXME: use %got22/%got10, if system assembler supports them.
case VK_Sparc_GOT22: OS << "%hi("; break;
case VK_Sparc_GOT10: OS << "%lo("; break;
case VK_Sparc_GOT13: closeParen = false; break;
case VK_Sparc_13: closeParen = false; break;
case VK_Sparc_WPLT30: closeParen = false; break;
case VK_Sparc_R_DISP32: OS << "%r_disp32("; break;
case VK_Sparc_TLS_GD_HI22: OS << "%tgd_hi22("; break;
case VK_Sparc_TLS_GD_LO10: OS << "%tgd_lo10("; break;
case VK_Sparc_TLS_GD_ADD: OS << "%tgd_add("; break;
case VK_Sparc_TLS_GD_CALL: OS << "%tgd_call("; break;
case VK_Sparc_TLS_LDM_HI22: OS << "%tldm_hi22("; break;
case VK_Sparc_TLS_LDM_LO10: OS << "%tldm_lo10("; break;
case VK_Sparc_TLS_LDM_ADD: OS << "%tldm_add("; break;
case VK_Sparc_TLS_LDM_CALL: OS << "%tldm_call("; break;
case VK_Sparc_TLS_LDO_HIX22: OS << "%tldo_hix22("; break;
case VK_Sparc_TLS_LDO_LOX10: OS << "%tldo_lox10("; break;
case VK_Sparc_TLS_LDO_ADD: OS << "%tldo_add("; break;
case VK_Sparc_TLS_IE_HI22: OS << "%tie_hi22("; break;
case VK_Sparc_TLS_IE_LO10: OS << "%tie_lo10("; break;
case VK_Sparc_TLS_IE_LD: OS << "%tie_ld("; break;
case VK_Sparc_TLS_IE_LDX: OS << "%tie_ldx("; break;
case VK_Sparc_TLS_IE_ADD: OS << "%tie_add("; break;
case VK_Sparc_TLS_LE_HIX22: OS << "%tle_hix22("; break;
case VK_Sparc_TLS_LE_LOX10: OS << "%tle_lox10("; break;
}
return closeParen;
}
SparcMCExpr::VariantKind SparcMCExpr::parseVariantKind(StringRef name)
{
return StringSwitch<SparcMCExpr::VariantKind>(name)
.Case("lo", VK_Sparc_LO)
.Case("hi", VK_Sparc_HI)
.Case("h44", VK_Sparc_H44)
.Case("m44", VK_Sparc_M44)
.Case("l44", VK_Sparc_L44)
.Case("hh", VK_Sparc_HH)
.Case("hm", VK_Sparc_HM)
.Case("pc22", VK_Sparc_PC22)
.Case("pc10", VK_Sparc_PC10)
.Case("got22", VK_Sparc_GOT22)
.Case("got10", VK_Sparc_GOT10)
.Case("got13", VK_Sparc_GOT13)
.Case("r_disp32", VK_Sparc_R_DISP32)
.Case("tgd_hi22", VK_Sparc_TLS_GD_HI22)
.Case("tgd_lo10", VK_Sparc_TLS_GD_LO10)
.Case("tgd_add", VK_Sparc_TLS_GD_ADD)
.Case("tgd_call", VK_Sparc_TLS_GD_CALL)
.Case("tldm_hi22", VK_Sparc_TLS_LDM_HI22)
.Case("tldm_lo10", VK_Sparc_TLS_LDM_LO10)
.Case("tldm_add", VK_Sparc_TLS_LDM_ADD)
.Case("tldm_call", VK_Sparc_TLS_LDM_CALL)
.Case("tldo_hix22", VK_Sparc_TLS_LDO_HIX22)
.Case("tldo_lox10", VK_Sparc_TLS_LDO_LOX10)
.Case("tldo_add", VK_Sparc_TLS_LDO_ADD)
.Case("tie_hi22", VK_Sparc_TLS_IE_HI22)
.Case("tie_lo10", VK_Sparc_TLS_IE_LO10)
.Case("tie_ld", VK_Sparc_TLS_IE_LD)
.Case("tie_ldx", VK_Sparc_TLS_IE_LDX)
.Case("tie_add", VK_Sparc_TLS_IE_ADD)
.Case("tle_hix22", VK_Sparc_TLS_LE_HIX22)
.Case("tle_lox10", VK_Sparc_TLS_LE_LOX10)
.Default(VK_Sparc_None);
}
Sparc::Fixups SparcMCExpr::getFixupKind(SparcMCExpr::VariantKind Kind) {
switch (Kind) {
default: llvm_unreachable("Unhandled SparcMCExpr::VariantKind");
case VK_Sparc_LO: return Sparc::fixup_sparc_lo10;
case VK_Sparc_HI: return Sparc::fixup_sparc_hi22;
case VK_Sparc_H44: return Sparc::fixup_sparc_h44;
case VK_Sparc_M44: return Sparc::fixup_sparc_m44;
case VK_Sparc_L44: return Sparc::fixup_sparc_l44;
case VK_Sparc_HH: return Sparc::fixup_sparc_hh;
case VK_Sparc_HM: return Sparc::fixup_sparc_hm;
case VK_Sparc_PC22: return Sparc::fixup_sparc_pc22;
case VK_Sparc_PC10: return Sparc::fixup_sparc_pc10;
case VK_Sparc_GOT22: return Sparc::fixup_sparc_got22;
case VK_Sparc_GOT10: return Sparc::fixup_sparc_got10;
case VK_Sparc_GOT13: return Sparc::fixup_sparc_got13;
case VK_Sparc_13: return Sparc::fixup_sparc_13;
case VK_Sparc_WPLT30: return Sparc::fixup_sparc_wplt30;
case VK_Sparc_TLS_GD_HI22: return Sparc::fixup_sparc_tls_gd_hi22;
case VK_Sparc_TLS_GD_LO10: return Sparc::fixup_sparc_tls_gd_lo10;
case VK_Sparc_TLS_GD_ADD: return Sparc::fixup_sparc_tls_gd_add;
case VK_Sparc_TLS_GD_CALL: return Sparc::fixup_sparc_tls_gd_call;
case VK_Sparc_TLS_LDM_HI22: return Sparc::fixup_sparc_tls_ldm_hi22;
case VK_Sparc_TLS_LDM_LO10: return Sparc::fixup_sparc_tls_ldm_lo10;
case VK_Sparc_TLS_LDM_ADD: return Sparc::fixup_sparc_tls_ldm_add;
case VK_Sparc_TLS_LDM_CALL: return Sparc::fixup_sparc_tls_ldm_call;
case VK_Sparc_TLS_LDO_HIX22: return Sparc::fixup_sparc_tls_ldo_hix22;
case VK_Sparc_TLS_LDO_LOX10: return Sparc::fixup_sparc_tls_ldo_lox10;
case VK_Sparc_TLS_LDO_ADD: return Sparc::fixup_sparc_tls_ldo_add;
case VK_Sparc_TLS_IE_HI22: return Sparc::fixup_sparc_tls_ie_hi22;
case VK_Sparc_TLS_IE_LO10: return Sparc::fixup_sparc_tls_ie_lo10;
case VK_Sparc_TLS_IE_LD: return Sparc::fixup_sparc_tls_ie_ld;
case VK_Sparc_TLS_IE_LDX: return Sparc::fixup_sparc_tls_ie_ldx;
case VK_Sparc_TLS_IE_ADD: return Sparc::fixup_sparc_tls_ie_add;
case VK_Sparc_TLS_LE_HIX22: return Sparc::fixup_sparc_tls_le_hix22;
case VK_Sparc_TLS_LE_LOX10: return Sparc::fixup_sparc_tls_le_lox10;
}
}
bool
SparcMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
const MCAsmLayout *Layout,
const MCFixup *Fixup) const {
return getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup);
}
static void fixELFSymbolsInTLSFixupsImpl(const MCExpr *Expr, MCAssembler &Asm) {
switch (Expr->getKind()) {
case MCExpr::Target:
llvm_unreachable("Can't handle nested target expr!");
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);
cast<MCSymbolELF>(SymRef.getSymbol()).setType(ELF::STT_TLS);
break;
}
case MCExpr::Unary:
fixELFSymbolsInTLSFixupsImpl(cast<MCUnaryExpr>(Expr)->getSubExpr(), Asm);
break;
}
}
void SparcMCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {
switch(getKind()) {
default: return;
case VK_Sparc_TLS_GD_CALL:
case VK_Sparc_TLS_LDM_CALL: {
// The corresponding relocations reference __tls_get_addr, as they call it,
// but this is only implicit; we must explicitly add it to our symbol table
// to bind it for these uses.
MCSymbol *Symbol = Asm.getContext().getOrCreateSymbol("__tls_get_addr");
Asm.registerSymbol(*Symbol);
auto ELFSymbol = cast<MCSymbolELF>(Symbol);
if (!ELFSymbol->isBindingSet()) {
ELFSymbol->setBinding(ELF::STB_GLOBAL);
ELFSymbol->setExternal(true);
}
LLVM_FALLTHROUGH;
}
case VK_Sparc_TLS_GD_HI22:
case VK_Sparc_TLS_GD_LO10:
case VK_Sparc_TLS_GD_ADD:
case VK_Sparc_TLS_LDM_HI22:
case VK_Sparc_TLS_LDM_LO10:
case VK_Sparc_TLS_LDM_ADD:
case VK_Sparc_TLS_LDO_HIX22:
case VK_Sparc_TLS_LDO_LOX10:
case VK_Sparc_TLS_LDO_ADD:
case VK_Sparc_TLS_IE_HI22:
case VK_Sparc_TLS_IE_LO10:
case VK_Sparc_TLS_IE_LD:
case VK_Sparc_TLS_IE_LDX:
case VK_Sparc_TLS_IE_ADD:
case VK_Sparc_TLS_LE_HIX22:
case VK_Sparc_TLS_LE_LOX10: break;
}
fixELFSymbolsInTLSFixupsImpl(getSubExpr(), Asm);
}
void SparcMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
Streamer.visitUsedExpr(*getSubExpr());
}
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