#ifndef LLVM_MC_MCVALUE_H
#define LLVM_MC_MCVALUE_H
-#include "llvm/Support/DataTypes.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/DataTypes.h"
#include <cassert>
namespace llvm {
-class MCSymbol;
+class MCAsmInfo;
+class raw_ostream;
-/// MCValue - This represents an "assembler immediate". In its most general
-/// form, this can hold "SymbolA - SymbolB + imm64". Not all targets supports
-/// relocations of this general form, but we need to represent this anyway.
+/// \brief This represents an "assembler immediate".
+///
+/// In its most general form, this can hold ":Kind:(SymbolA - SymbolB +
+/// imm64)". Not all targets supports relocations of this general form, but we
+/// need to represent this anyway.
+///
+/// In general both SymbolA and SymbolB will also have a modifier
+/// analogous to the top-level Kind. Current targets are not expected
+/// to make use of both though. The choice comes down to whether
+/// relocation modifiers apply to the closest symbol or the whole
+/// expression.
///
/// In the general form, SymbolB can only be defined if SymbolA is, and both
/// must be in the same (non-external) section. The latter constraint is not
/// Note that this class must remain a simple POD value class, because we need
/// it to live in unions etc.
class MCValue {
- MCSymbol *SymA, *SymB;
+ const MCSymbolRefExpr *SymA, *SymB;
int64_t Cst;
+ uint32_t RefKind;
public:
int64_t getConstant() const { return Cst; }
- MCSymbol *getSymA() const { return SymA; }
- MCSymbol *getSymB() const { return SymB; }
+ const MCSymbolRefExpr *getSymA() const { return SymA; }
+ const MCSymbolRefExpr *getSymB() const { return SymB; }
+ uint32_t getRefKind() const { return RefKind; }
- /// isAbsolute - Is this an absolute (as opposed to relocatable) value.
+ /// \brief Is this an absolute (as opposed to relocatable) value.
bool isAbsolute() const { return !SymA && !SymB; }
- /// getAssociatedSection - For relocatable values, return the section the
- /// value is associated with.
- ///
- /// @result - The value's associated section, or null for external or constant
- /// values.
- MCSection *getAssociatedSection() const {
- return SymA ? SymA->getSection() : 0;
- }
+ /// \brief Print the value to the stream \p OS.
+ void print(raw_ostream &OS) const;
- static MCValue get(MCSymbol *SymA, MCSymbol *SymB = 0, int64_t Val = 0) {
+ /// \brief Print the value to stderr.
+ void dump() const;
+
+ MCSymbolRefExpr::VariantKind getAccessVariant() const;
+
+ static MCValue get(const MCSymbolRefExpr *SymA,
+ const MCSymbolRefExpr *SymB = nullptr,
+ int64_t Val = 0, uint32_t RefKind = 0) {
MCValue R;
assert((!SymB || SymA) && "Invalid relocatable MCValue!");
R.Cst = Val;
R.SymA = SymA;
R.SymB = SymB;
+ R.RefKind = RefKind;
return R;
}
-
+
static MCValue get(int64_t Val) {
MCValue R;
R.Cst = Val;
- R.SymA = 0;
- R.SymB = 0;
+ R.SymA = nullptr;
+ R.SymB = nullptr;
+ R.RefKind = 0;
return R;
}
-
+
};
} // end namespace llvm