1//===-- AVRMCExpr.h - AVR specific MC expression classes --------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_AVR_MCEXPR_H
10#define LLVM_AVR_MCEXPR_H
11
12#include "llvm/MC/MCExpr.h"
13
14#include "MCTargetDesc/AVRFixupKinds.h"
15
16namespace llvm {
17
18/// A expression in AVR machine code.
19class AVRMCExpr : public MCSpecifierExpr {
20public:
21 friend class AVRMCAsmInfo;
22 using Specifier = Spec;
23 /// Specifies the type of an expression.
24
25public:
26 /// Creates an AVR machine code expression.
27 static const AVRMCExpr *create(Specifier S, const MCExpr *Expr,
28 bool isNegated, MCContext &Ctx);
29
30 /// Gets the name of the expression.
31 const char *getName() const;
32 /// Gets the fixup which corresponds to the expression.
33 AVR::Fixups getFixupKind() const;
34 /// Evaluates the fixup as a constant value.
35 bool evaluateAsConstant(int64_t &Result) const;
36
37 bool isNegated() const { return Negated; }
38 void setNegated(bool negated = true) { Negated = negated; }
39
40public:
41 static Specifier parseSpecifier(StringRef Name);
42
43private:
44 int64_t evaluateAsInt64(int64_t Value) const;
45
46 bool Negated;
47
48private:
49 explicit AVRMCExpr(Specifier S, const MCExpr *Expr, bool Negated)
50 : MCSpecifierExpr(Expr, S), Negated(Negated) {}
51};
52
53} // end namespace llvm
54
55#endif // LLVM_AVR_MCEXPR_H
56