mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-04 05:17:07 +00:00
MC: clang-format MCSymbol.h, NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237297 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
@@ -19,166 +19,154 @@
|
||||
#include "llvm/Support/Compiler.h"
|
||||
|
||||
namespace llvm {
|
||||
class MCExpr;
|
||||
class MCSection;
|
||||
class MCContext;
|
||||
class raw_ostream;
|
||||
class MCExpr;
|
||||
class MCSection;
|
||||
class MCContext;
|
||||
class raw_ostream;
|
||||
|
||||
/// MCSymbol - Instances of this class represent a symbol name in the MC file,
|
||||
/// and MCSymbols are created and uniqued by the MCContext class. MCSymbols
|
||||
/// should only be constructed with valid names for the object file.
|
||||
///
|
||||
/// If the symbol is defined/emitted into the current translation unit, the
|
||||
/// Section member is set to indicate what section it lives in. Otherwise, if
|
||||
/// it is a reference to an external entity, it has a null section.
|
||||
class MCSymbol {
|
||||
// Special sentinal value for the absolute pseudo section.
|
||||
//
|
||||
// FIXME: Use a PointerInt wrapper for this?
|
||||
static const MCSection *AbsolutePseudoSection;
|
||||
/// MCSymbol - Instances of this class represent a symbol name in the MC file,
|
||||
/// and MCSymbols are created and uniqued by the MCContext class. MCSymbols
|
||||
/// should only be constructed with valid names for the object file.
|
||||
///
|
||||
/// If the symbol is defined/emitted into the current translation unit, the
|
||||
/// Section member is set to indicate what section it lives in. Otherwise, if
|
||||
/// it is a reference to an external entity, it has a null section.
|
||||
class MCSymbol {
|
||||
// Special sentinal value for the absolute pseudo section.
|
||||
//
|
||||
// FIXME: Use a PointerInt wrapper for this?
|
||||
static const MCSection *AbsolutePseudoSection;
|
||||
|
||||
/// Name - The name of the symbol. The referred-to string data is actually
|
||||
/// held by the StringMap that lives in MCContext.
|
||||
StringRef Name;
|
||||
/// Name - The name of the symbol. The referred-to string data is actually
|
||||
/// held by the StringMap that lives in MCContext.
|
||||
StringRef Name;
|
||||
|
||||
/// Section - The section the symbol is defined in. This is null for
|
||||
/// undefined symbols, and the special AbsolutePseudoSection value for
|
||||
/// absolute symbols. If this is a variable symbol, this caches the
|
||||
/// variable value's section.
|
||||
mutable const MCSection *Section;
|
||||
/// Section - The section the symbol is defined in. This is null for
|
||||
/// undefined symbols, and the special AbsolutePseudoSection value for
|
||||
/// absolute symbols. If this is a variable symbol, this caches the
|
||||
/// variable value's section.
|
||||
mutable const MCSection *Section;
|
||||
|
||||
/// Value - If non-null, the value for a variable symbol.
|
||||
const MCExpr *Value;
|
||||
/// Value - If non-null, the value for a variable symbol.
|
||||
const MCExpr *Value;
|
||||
|
||||
/// IsTemporary - True if this is an assembler temporary label, which
|
||||
/// typically does not survive in the .o file's symbol table. Usually
|
||||
/// "Lfoo" or ".foo".
|
||||
unsigned IsTemporary : 1;
|
||||
/// IsTemporary - True if this is an assembler temporary label, which
|
||||
/// typically does not survive in the .o file's symbol table. Usually
|
||||
/// "Lfoo" or ".foo".
|
||||
unsigned IsTemporary : 1;
|
||||
|
||||
/// \brief True if this symbol can be redefined.
|
||||
unsigned IsRedefinable : 1;
|
||||
/// \brief True if this symbol can be redefined.
|
||||
unsigned IsRedefinable : 1;
|
||||
|
||||
/// IsUsed - True if this symbol has been used.
|
||||
mutable unsigned IsUsed : 1;
|
||||
/// IsUsed - True if this symbol has been used.
|
||||
mutable unsigned IsUsed : 1;
|
||||
|
||||
private: // MCContext creates and uniques these.
|
||||
friend class MCExpr;
|
||||
friend class MCContext;
|
||||
MCSymbol(StringRef name, bool isTemporary)
|
||||
: Name(name), Section(nullptr), Value(nullptr),
|
||||
IsTemporary(isTemporary), IsRedefinable(false), IsUsed(false) {}
|
||||
private: // MCContext creates and uniques these.
|
||||
friend class MCExpr;
|
||||
friend class MCContext;
|
||||
MCSymbol(StringRef name, bool isTemporary)
|
||||
: Name(name), Section(nullptr), Value(nullptr), IsTemporary(isTemporary),
|
||||
IsRedefinable(false), IsUsed(false) {}
|
||||
|
||||
MCSymbol(const MCSymbol&) = delete;
|
||||
void operator=(const MCSymbol&) = delete;
|
||||
const MCSection *getSectionPtr() const {
|
||||
if (Section || !Value)
|
||||
return Section;
|
||||
return Section = Value->FindAssociatedSection();
|
||||
}
|
||||
|
||||
public:
|
||||
/// getName - Get the symbol name.
|
||||
StringRef getName() const { return Name; }
|
||||
|
||||
/// \name Accessors
|
||||
/// @{
|
||||
|
||||
/// isTemporary - Check if this is an assembler temporary symbol.
|
||||
bool isTemporary() const { return IsTemporary; }
|
||||
|
||||
/// isUsed - Check if this is used.
|
||||
bool isUsed() const { return IsUsed; }
|
||||
void setUsed(bool Value) const { IsUsed = Value; }
|
||||
|
||||
/// \brief Check if this symbol is redefinable.
|
||||
bool isRedefinable() const { return IsRedefinable; }
|
||||
/// \brief Mark this symbol as redefinable.
|
||||
void setRedefinable(bool Value) { IsRedefinable = Value; }
|
||||
/// \brief Prepare this symbol to be redefined.
|
||||
void redefineIfPossible() {
|
||||
if (IsRedefinable) {
|
||||
Value = nullptr;
|
||||
Section = nullptr;
|
||||
IsRedefinable = false;
|
||||
}
|
||||
}
|
||||
|
||||
/// @}
|
||||
/// \name Associated Sections
|
||||
/// @{
|
||||
|
||||
/// isDefined - Check if this symbol is defined (i.e., it has an address).
|
||||
///
|
||||
/// Defined symbols are either absolute or in some section.
|
||||
bool isDefined() const {
|
||||
return getSectionPtr() != nullptr;
|
||||
}
|
||||
|
||||
/// isInSection - Check if this symbol is defined in some section (i.e., it
|
||||
/// is defined but not absolute).
|
||||
bool isInSection() const {
|
||||
return isDefined() && !isAbsolute();
|
||||
}
|
||||
|
||||
/// isUndefined - Check if this symbol undefined (i.e., implicitly defined).
|
||||
bool isUndefined() const {
|
||||
return !isDefined();
|
||||
}
|
||||
|
||||
/// isAbsolute - Check if this is an absolute symbol.
|
||||
bool isAbsolute() const {
|
||||
return getSectionPtr() == AbsolutePseudoSection;
|
||||
}
|
||||
|
||||
/// getSection - Get the section associated with a defined, non-absolute
|
||||
/// symbol.
|
||||
const MCSection &getSection() const {
|
||||
assert(isInSection() && "Invalid accessor!");
|
||||
return *getSectionPtr();
|
||||
}
|
||||
|
||||
/// setSection - Mark the symbol as defined in the section \p S.
|
||||
void setSection(const MCSection &S) {
|
||||
assert(!isVariable() && "Cannot set section of variable");
|
||||
Section = &S;
|
||||
}
|
||||
|
||||
/// setUndefined - Mark the symbol as undefined.
|
||||
void setUndefined() {
|
||||
Section = nullptr;
|
||||
}
|
||||
|
||||
/// @}
|
||||
/// \name Variable Symbols
|
||||
/// @{
|
||||
|
||||
/// isVariable - Check if this is a variable symbol.
|
||||
bool isVariable() const {
|
||||
return Value != nullptr;
|
||||
}
|
||||
|
||||
/// getVariableValue() - Get the value for variable symbols.
|
||||
const MCExpr *getVariableValue() const {
|
||||
assert(isVariable() && "Invalid accessor!");
|
||||
IsUsed = true;
|
||||
return Value;
|
||||
}
|
||||
|
||||
void setVariableValue(const MCExpr *Value);
|
||||
|
||||
/// @}
|
||||
|
||||
/// print - Print the value to the stream \p OS.
|
||||
void print(raw_ostream &OS) const;
|
||||
|
||||
/// dump - Print the value to stderr.
|
||||
void dump() const;
|
||||
};
|
||||
|
||||
inline raw_ostream &operator<<(raw_ostream &OS, const MCSymbol &Sym) {
|
||||
Sym.print(OS);
|
||||
return OS;
|
||||
MCSymbol(const MCSymbol &) = delete;
|
||||
void operator=(const MCSymbol &) = delete;
|
||||
const MCSection *getSectionPtr() const {
|
||||
if (Section || !Value)
|
||||
return Section;
|
||||
return Section = Value->FindAssociatedSection();
|
||||
}
|
||||
|
||||
public:
|
||||
/// getName - Get the symbol name.
|
||||
StringRef getName() const { return Name; }
|
||||
|
||||
/// \name Accessors
|
||||
/// @{
|
||||
|
||||
/// isTemporary - Check if this is an assembler temporary symbol.
|
||||
bool isTemporary() const { return IsTemporary; }
|
||||
|
||||
/// isUsed - Check if this is used.
|
||||
bool isUsed() const { return IsUsed; }
|
||||
void setUsed(bool Value) const { IsUsed = Value; }
|
||||
|
||||
/// \brief Check if this symbol is redefinable.
|
||||
bool isRedefinable() const { return IsRedefinable; }
|
||||
/// \brief Mark this symbol as redefinable.
|
||||
void setRedefinable(bool Value) { IsRedefinable = Value; }
|
||||
/// \brief Prepare this symbol to be redefined.
|
||||
void redefineIfPossible() {
|
||||
if (IsRedefinable) {
|
||||
Value = nullptr;
|
||||
Section = nullptr;
|
||||
IsRedefinable = false;
|
||||
}
|
||||
}
|
||||
|
||||
/// @}
|
||||
/// \name Associated Sections
|
||||
/// @{
|
||||
|
||||
/// isDefined - Check if this symbol is defined (i.e., it has an address).
|
||||
///
|
||||
/// Defined symbols are either absolute or in some section.
|
||||
bool isDefined() const { return getSectionPtr() != nullptr; }
|
||||
|
||||
/// isInSection - Check if this symbol is defined in some section (i.e., it
|
||||
/// is defined but not absolute).
|
||||
bool isInSection() const { return isDefined() && !isAbsolute(); }
|
||||
|
||||
/// isUndefined - Check if this symbol undefined (i.e., implicitly defined).
|
||||
bool isUndefined() const { return !isDefined(); }
|
||||
|
||||
/// isAbsolute - Check if this is an absolute symbol.
|
||||
bool isAbsolute() const { return getSectionPtr() == AbsolutePseudoSection; }
|
||||
|
||||
/// getSection - Get the section associated with a defined, non-absolute
|
||||
/// symbol.
|
||||
const MCSection &getSection() const {
|
||||
assert(isInSection() && "Invalid accessor!");
|
||||
return *getSectionPtr();
|
||||
}
|
||||
|
||||
/// setSection - Mark the symbol as defined in the section \p S.
|
||||
void setSection(const MCSection &S) {
|
||||
assert(!isVariable() && "Cannot set section of variable");
|
||||
Section = &S;
|
||||
}
|
||||
|
||||
/// setUndefined - Mark the symbol as undefined.
|
||||
void setUndefined() { Section = nullptr; }
|
||||
|
||||
/// @}
|
||||
/// \name Variable Symbols
|
||||
/// @{
|
||||
|
||||
/// isVariable - Check if this is a variable symbol.
|
||||
bool isVariable() const { return Value != nullptr; }
|
||||
|
||||
/// getVariableValue() - Get the value for variable symbols.
|
||||
const MCExpr *getVariableValue() const {
|
||||
assert(isVariable() && "Invalid accessor!");
|
||||
IsUsed = true;
|
||||
return Value;
|
||||
}
|
||||
|
||||
void setVariableValue(const MCExpr *Value);
|
||||
|
||||
/// @}
|
||||
|
||||
/// print - Print the value to the stream \p OS.
|
||||
void print(raw_ostream &OS) const;
|
||||
|
||||
/// dump - Print the value to stderr.
|
||||
void dump() const;
|
||||
};
|
||||
|
||||
inline raw_ostream &operator<<(raw_ostream &OS, const MCSymbol &Sym) {
|
||||
Sym.print(OS);
|
||||
return OS;
|
||||
}
|
||||
} // end namespace llvm
|
||||
|
||||
#endif
|
||||
|
||||
Reference in New Issue
Block a user