aboutsummaryrefslogtreecommitdiffstats
path: root/lib/MC/MCExpr.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/MC/MCExpr.cpp')
-rw-r--r--lib/MC/MCExpr.cpp91
1 files changed, 62 insertions, 29 deletions
diff --git a/lib/MC/MCExpr.cpp b/lib/MC/MCExpr.cpp
index f724716..6e648b2 100644
--- a/lib/MC/MCExpr.cpp
+++ b/lib/MC/MCExpr.cpp
@@ -49,12 +49,8 @@ void MCExpr::print(raw_ostream &OS) const {
else
OS << Sym;
- if (SRE.getKind() != MCSymbolRefExpr::VK_None) {
- if (SRE.getMCAsmInfo().useParensForSymbolVariant())
- OS << '(' << MCSymbolRefExpr::getVariantKindName(SRE.getKind()) << ')';
- else
- OS << '@' << MCSymbolRefExpr::getVariantKindName(SRE.getKind());
- }
+ if (SRE.getKind() != MCSymbolRefExpr::VK_None)
+ SRE.printVariantKind(OS);
return;
}
@@ -150,6 +146,15 @@ const MCConstantExpr *MCConstantExpr::Create(int64_t Value, MCContext &Ctx) {
/* *** */
+MCSymbolRefExpr::MCSymbolRefExpr(const MCSymbol *Symbol, VariantKind Kind,
+ const MCAsmInfo *MAI)
+ : MCExpr(MCExpr::SymbolRef), Kind(Kind),
+ UseParensForSymbolVariant(MAI->useParensForSymbolVariant()),
+ HasSubsectionsViaSymbols(MAI->hasSubsectionsViaSymbols()),
+ Symbol(Symbol) {
+ assert(Symbol);
+}
+
const MCSymbolRefExpr *MCSymbolRefExpr::Create(const MCSymbol *Sym,
VariantKind Kind,
MCContext &Ctx) {
@@ -247,6 +252,7 @@ StringRef MCSymbolRefExpr::getVariantKindName(VariantKind Kind) {
case VK_PPC_GOT_TLSLD_HI: return "got@tlsld@h";
case VK_PPC_GOT_TLSLD_HA: return "got@tlsld@ha";
case VK_PPC_TLSLD: return "tlsld";
+ case VK_PPC_LOCAL: return "local";
case VK_Mips_GPREL: return "GPREL";
case VK_Mips_GOT_CALL: return "GOT_CALL";
case VK_Mips_GOT16: return "GOT16";
@@ -273,7 +279,7 @@ StringRef MCSymbolRefExpr::getVariantKindName(VariantKind Kind) {
case VK_Mips_CALL_LO16: return "CALL_LO16";
case VK_Mips_PCREL_HI16: return "PCREL_HI16";
case VK_Mips_PCREL_LO16: return "PCREL_LO16";
- case VK_COFF_IMGREL32: return "IMGREL32";
+ case VK_COFF_IMGREL32: return "IMGREL";
}
llvm_unreachable("Invalid variant kind");
}
@@ -442,6 +448,13 @@ MCSymbolRefExpr::getVariantKindForName(StringRef Name) {
.Default(VK_Invalid);
}
+void MCSymbolRefExpr::printVariantKind(raw_ostream &OS) const {
+ if (UseParensForSymbolVariant)
+ OS << '(' << MCSymbolRefExpr::getVariantKindName(getKind()) << ')';
+ else
+ OS << '@' << MCSymbolRefExpr::getVariantKindName(getKind());
+}
+
/* *** */
void MCTargetExpr::anchor() {}
@@ -467,9 +480,27 @@ bool MCExpr::EvaluateAsAbsolute(int64_t &Res, const MCAssembler &Asm) const {
return EvaluateAsAbsolute(Res, &Asm, nullptr, nullptr);
}
+int64_t MCExpr::evaluateKnownAbsolute(const MCAsmLayout &Layout) const {
+ int64_t Res;
+ bool Abs =
+ evaluateAsAbsolute(Res, &Layout.getAssembler(), &Layout, nullptr, true);
+ (void)Abs;
+ assert(Abs && "Not actually absolute");
+ return Res;
+}
+
bool MCExpr::EvaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm,
const MCAsmLayout *Layout,
const SectionAddrMap *Addrs) const {
+ // FIXME: The use if InSet = Addrs is a hack. Setting InSet causes us
+ // absolutize differences across sections and that is what the MachO writer
+ // uses Addrs for.
+ return evaluateAsAbsolute(Res, Asm, Layout, Addrs, Addrs);
+}
+
+bool MCExpr::evaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm,
+ const MCAsmLayout *Layout,
+ const SectionAddrMap *Addrs, bool InSet) const {
MCValue Value;
// Fast path constants.
@@ -478,12 +509,8 @@ bool MCExpr::EvaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm,
return true;
}
- // FIXME: The use if InSet = Addrs is a hack. Setting InSet causes us
- // absolutize differences across sections and that is what the MachO writer
- // uses Addrs for.
- bool IsRelocatable =
- EvaluateAsRelocatableImpl(Value, Asm, Layout, Addrs, /*InSet*/ Addrs,
- /*ForceVarExpansion*/ false);
+ bool IsRelocatable = EvaluateAsRelocatableImpl(
+ Value, Asm, Layout, nullptr, Addrs, InSet, /*ForceVarExpansion*/ false);
// Record the current value.
Res = Value.getConstant();
@@ -632,27 +659,31 @@ static bool EvaluateSymbolicAdd(const MCAssembler *Asm,
}
bool MCExpr::EvaluateAsRelocatable(MCValue &Res,
- const MCAsmLayout *Layout) const {
+ const MCAsmLayout *Layout,
+ const MCFixup *Fixup) const {
MCAssembler *Assembler = Layout ? &Layout->getAssembler() : nullptr;
- return EvaluateAsRelocatableImpl(Res, Assembler, Layout, nullptr, false,
- /*ForceVarExpansion*/ false);
+ return EvaluateAsRelocatableImpl(Res, Assembler, Layout, Fixup, nullptr,
+ false, /*ForceVarExpansion*/ false);
}
-bool MCExpr::EvaluateAsValue(MCValue &Res, const MCAsmLayout *Layout) const {
+bool MCExpr::EvaluateAsValue(MCValue &Res, const MCAsmLayout *Layout,
+ const MCFixup *Fixup) const {
MCAssembler *Assembler = Layout ? &Layout->getAssembler() : nullptr;
- return EvaluateAsRelocatableImpl(Res, Assembler, Layout, nullptr, false,
- /*ForceVarExpansion*/ true);
+ return EvaluateAsRelocatableImpl(Res, Assembler, Layout, Fixup, nullptr,
+ false, /*ForceVarExpansion*/ true);
}
bool MCExpr::EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
const MCAsmLayout *Layout,
+ const MCFixup *Fixup,
const SectionAddrMap *Addrs, bool InSet,
bool ForceVarExpansion) const {
++stats::MCExprEvaluate;
switch (getKind()) {
case Target:
- return cast<MCTargetExpr>(this)->EvaluateAsRelocatableImpl(Res, Layout);
+ return cast<MCTargetExpr>(this)->EvaluateAsRelocatableImpl(Res, Layout,
+ Fixup);
case Constant:
Res = MCValue::get(cast<MCConstantExpr>(this)->getValue());
@@ -661,16 +692,15 @@ bool MCExpr::EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
case SymbolRef: {
const MCSymbolRefExpr *SRE = cast<MCSymbolRefExpr>(this);
const MCSymbol &Sym = SRE->getSymbol();
- const MCAsmInfo &MCAsmInfo = SRE->getMCAsmInfo();
// Evaluate recursively if this is a variable.
if (Sym.isVariable() && SRE->getKind() == MCSymbolRefExpr::VK_None) {
if (Sym.getVariableValue()->EvaluateAsRelocatableImpl(
- Res, Asm, Layout, Addrs, true, ForceVarExpansion)) {
+ Res, Asm, Layout, Fixup, Addrs, true, ForceVarExpansion)) {
const MCSymbolRefExpr *A = Res.getSymA();
const MCSymbolRefExpr *B = Res.getSymB();
- if (MCAsmInfo.hasSubsectionsViaSymbols()) {
+ if (SRE->hasSubsectionsViaSymbols()) {
// FIXME: This is small hack. Given
// a = b + 4
// .long a
@@ -697,8 +727,9 @@ bool MCExpr::EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
const MCUnaryExpr *AUE = cast<MCUnaryExpr>(this);
MCValue Value;
- if (!AUE->getSubExpr()->EvaluateAsRelocatableImpl(Value, Asm, Layout, Addrs,
- InSet, ForceVarExpansion))
+ if (!AUE->getSubExpr()->EvaluateAsRelocatableImpl(Value, Asm, Layout,
+ Fixup, Addrs, InSet,
+ ForceVarExpansion))
return false;
switch (AUE->getOpcode()) {
@@ -731,10 +762,12 @@ bool MCExpr::EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
const MCBinaryExpr *ABE = cast<MCBinaryExpr>(this);
MCValue LHSValue, RHSValue;
- if (!ABE->getLHS()->EvaluateAsRelocatableImpl(LHSValue, Asm, Layout, Addrs,
- InSet, ForceVarExpansion) ||
- !ABE->getRHS()->EvaluateAsRelocatableImpl(RHSValue, Asm, Layout, Addrs,
- InSet, ForceVarExpansion))
+ if (!ABE->getLHS()->EvaluateAsRelocatableImpl(LHSValue, Asm, Layout,
+ Fixup, Addrs, InSet,
+ ForceVarExpansion) ||
+ !ABE->getRHS()->EvaluateAsRelocatableImpl(RHSValue, Asm, Layout,
+ Fixup, Addrs, InSet,
+ ForceVarExpansion))
return false;
// We only support a few operations on non-constant expressions, handle
generated by cgit v1.1 at 2024-05-17 21:17:59 +0000