LLVM 17.0.0git
AVRMCExpr.h
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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
15
16namespace llvm {
17
18/// A expression in AVR machine code.
19class AVRMCExpr : public MCTargetExpr {
20public:
21 /// Specifies the type of an expression.
24
25 VK_AVR_HI8, ///< Corresponds to `hi8()`.
26 VK_AVR_LO8, ///< Corresponds to `lo8()`.
27 VK_AVR_HH8, ///< Corresponds to `hlo8() and hh8()`.
28 VK_AVR_HHI8, ///< Corresponds to `hhi8()`.
29
30 VK_AVR_PM, ///< Corresponds to `pm()`, reference to program memory.
31 VK_AVR_PM_LO8, ///< Corresponds to `pm_lo8()`.
32 VK_AVR_PM_HI8, ///< Corresponds to `pm_hi8()`.
33 VK_AVR_PM_HH8, ///< Corresponds to `pm_hh8()`.
34
35 VK_AVR_LO8_GS, ///< Corresponds to `lo8(gs())`.
36 VK_AVR_HI8_GS, ///< Corresponds to `hi8(gs())`.
37 VK_AVR_GS, ///< Corresponds to `gs()`.
38 };
39
40public:
41 /// Creates an AVR machine code expression.
42 static const AVRMCExpr *create(VariantKind Kind, const MCExpr *Expr,
43 bool isNegated, MCContext &Ctx);
44
45 /// Gets the type of the expression.
46 VariantKind getKind() const { return Kind; }
47 /// Gets the name of the expression.
48 const char *getName() const;
49 const MCExpr *getSubExpr() const { return SubExpr; }
50 /// Gets the fixup which corresponds to the expression.
52 /// Evaluates the fixup as a constant value.
53 bool evaluateAsConstant(int64_t &Result) const;
54
55 bool isNegated() const { return Negated; }
56 void setNegated(bool negated = true) { Negated = negated; }
57
58 void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
59 bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
60 const MCFixup *Fixup) const override;
61
62 void visitUsedExpr(MCStreamer &streamer) const override;
63
66 }
67
68 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
69
70 static bool classof(const MCExpr *E) {
71 return E->getKind() == MCExpr::Target;
72 }
73
74public:
76
77private:
78 int64_t evaluateAsInt64(int64_t Value) const;
79
80 const VariantKind Kind;
81 const MCExpr *SubExpr;
82 bool Negated;
83
84private:
85 explicit AVRMCExpr(VariantKind Kind, const MCExpr *Expr, bool Negated)
86 : Kind(Kind), SubExpr(Expr), Negated(Negated) {}
87 ~AVRMCExpr() = default;
88};
89
90} // end namespace llvm
91
92#endif // LLVM_AVR_MCEXPR_H
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
std::string Name
PowerPC TLS Dynamic Call Fixup
A expression in AVR machine code.
Definition: AVRMCExpr.h:19
static const AVRMCExpr * create(VariantKind Kind, const MCExpr *Expr, bool isNegated, MCContext &Ctx)
Creates an AVR machine code expression.
Definition: AVRMCExpr.cpp:38
void setNegated(bool negated=true)
Definition: AVRMCExpr.h:56
MCFragment * findAssociatedFragment() const override
Definition: AVRMCExpr.h:64
void visitUsedExpr(MCStreamer &streamer) const override
Definition: AVRMCExpr.cpp:193
bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout, const MCFixup *Fixup) const override
Definition: AVRMCExpr.cpp:71
static VariantKind getKindByName(StringRef Name)
Definition: AVRMCExpr.cpp:209
AVR::Fixups getFixupKind() const
Gets the fixup which corresponds to the expression.
Definition: AVRMCExpr.cpp:149
bool evaluateAsConstant(int64_t &Result) const
Evaluates the fixup as a constant value.
Definition: AVRMCExpr.cpp:54
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override
Definition: AVRMCExpr.h:68
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override
Definition: AVRMCExpr.cpp:43
static bool classof(const MCExpr *E)
Definition: AVRMCExpr.h:70
VariantKind getKind() const
Gets the type of the expression.
Definition: AVRMCExpr.h:46
const MCExpr * getSubExpr() const
Definition: AVRMCExpr.h:49
VariantKind
Specifies the type of an expression.
Definition: AVRMCExpr.h:22
@ VK_AVR_PM_LO8
Corresponds to pm_lo8().
Definition: AVRMCExpr.h:31
@ VK_AVR_LO8
Corresponds to lo8().
Definition: AVRMCExpr.h:26
@ VK_AVR_PM_HI8
Corresponds to pm_hi8().
Definition: AVRMCExpr.h:32
@ VK_AVR_PM
Corresponds to pm(), reference to program memory.
Definition: AVRMCExpr.h:30
@ VK_AVR_HHI8
Corresponds to hhi8().
Definition: AVRMCExpr.h:28
@ VK_AVR_HI8_GS
Corresponds to hi8(gs()).
Definition: AVRMCExpr.h:36
@ VK_AVR_HH8
Corresponds to hlo8() and hh8().
Definition: AVRMCExpr.h:27
@ VK_AVR_LO8_GS
Corresponds to lo8(gs()).
Definition: AVRMCExpr.h:35
@ VK_AVR_PM_HH8
Corresponds to pm_hh8().
Definition: AVRMCExpr.h:33
@ VK_AVR_GS
Corresponds to gs().
Definition: AVRMCExpr.h:37
@ VK_AVR_HI8
Corresponds to hi8().
Definition: AVRMCExpr.h:25
bool isNegated() const
Definition: AVRMCExpr.h:55
const char * getName() const
Gets the name of the expression.
Definition: AVRMCExpr.cpp:197
This class is intended to be used as a base class for asm properties and features specific to the tar...
Definition: MCAsmInfo.h:56
Encapsulates the layout of an assembly file at a particular point in time.
Definition: MCAsmLayout.h:28
Context object for machine code objects.
Definition: MCContext.h:76
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
@ Target
Target specific expression.
Definition: MCExpr.h:42
MCFragment * findAssociatedFragment() const
Find the "associated section" for this expression, which is currently defined as the absolute section...
Definition: MCExpr.cpp:987
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:71
Streaming machine code generation interface.
Definition: MCStreamer.h:212
This is an extension point for target-specific MCExpr subclasses to implement.
Definition: MCExpr.h:645
This represents an "assembler immediate".
Definition: MCValue.h:36
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
LLVM Value Representation.
Definition: Value.h:74
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
Fixups
The set of supported fixups.
Definition: AVRFixupKinds.h:26
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18