1//= LoongArchMCExpr.h - LoongArch 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// This file describes LoongArch-specific MCExprs, used for modifiers like
10// "%pc_hi20" or "%pc_lo12" etc.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_LIB_TARGET_LOONGARCH_MCTARGETDESC_LOONGARCHMCEXPR_H
15#define LLVM_LIB_TARGET_LOONGARCH_MCTARGETDESC_LOONGARCHMCEXPR_H
16
17#include "llvm/MC/MCExpr.h"
18
19namespace llvm {
20
21class StringRef;
22
23class LoongArchMCExpr : public MCTargetExpr {
24public:
25 enum VariantKind {
26 VK_LoongArch_None,
27 VK_LoongArch_CALL,
28 VK_LoongArch_CALL_PLT,
29 VK_LoongArch_B16,
30 VK_LoongArch_B21,
31 VK_LoongArch_B26,
32 VK_LoongArch_ABS_HI20,
33 VK_LoongArch_ABS_LO12,
34 VK_LoongArch_ABS64_LO20,
35 VK_LoongArch_ABS64_HI12,
36 VK_LoongArch_PCALA_HI20,
37 VK_LoongArch_PCALA_LO12,
38 VK_LoongArch_PCALA64_LO20,
39 VK_LoongArch_PCALA64_HI12,
40 VK_LoongArch_GOT_PC_HI20,
41 VK_LoongArch_GOT_PC_LO12,
42 VK_LoongArch_GOT64_PC_LO20,
43 VK_LoongArch_GOT64_PC_HI12,
44 VK_LoongArch_GOT_HI20,
45 VK_LoongArch_GOT_LO12,
46 VK_LoongArch_GOT64_LO20,
47 VK_LoongArch_GOT64_HI12,
48 VK_LoongArch_TLS_LE_HI20,
49 VK_LoongArch_TLS_LE_LO12,
50 VK_LoongArch_TLS_LE64_LO20,
51 VK_LoongArch_TLS_LE64_HI12,
52 VK_LoongArch_TLS_IE_PC_HI20,
53 VK_LoongArch_TLS_IE_PC_LO12,
54 VK_LoongArch_TLS_IE64_PC_LO20,
55 VK_LoongArch_TLS_IE64_PC_HI12,
56 VK_LoongArch_TLS_IE_HI20,
57 VK_LoongArch_TLS_IE_LO12,
58 VK_LoongArch_TLS_IE64_LO20,
59 VK_LoongArch_TLS_IE64_HI12,
60 VK_LoongArch_TLS_LD_PC_HI20,
61 VK_LoongArch_TLS_LD_HI20,
62 VK_LoongArch_TLS_GD_PC_HI20,
63 VK_LoongArch_TLS_GD_HI20,
64 VK_LoongArch_CALL36,
65 VK_LoongArch_TLS_DESC_PC_HI20,
66 VK_LoongArch_TLS_DESC_PC_LO12,
67 VK_LoongArch_TLS_DESC64_PC_LO20,
68 VK_LoongArch_TLS_DESC64_PC_HI12,
69 VK_LoongArch_TLS_DESC_HI20,
70 VK_LoongArch_TLS_DESC_LO12,
71 VK_LoongArch_TLS_DESC64_LO20,
72 VK_LoongArch_TLS_DESC64_HI12,
73 VK_LoongArch_TLS_DESC_LD,
74 VK_LoongArch_TLS_DESC_CALL,
75 VK_LoongArch_TLS_LE_HI20_R,
76 VK_LoongArch_TLS_LE_ADD_R,
77 VK_LoongArch_TLS_LE_LO12_R,
78 VK_LoongArch_PCREL20_S2,
79 VK_LoongArch_TLS_LD_PCREL20_S2,
80 VK_LoongArch_TLS_GD_PCREL20_S2,
81 VK_LoongArch_TLS_DESC_PCREL20_S2,
82 VK_LoongArch_Invalid // Must be the last item.
83 };
84
85private:
86 const MCExpr *Expr;
87 const VariantKind Kind;
88 const bool RelaxHint;
89
90 explicit LoongArchMCExpr(const MCExpr *Expr, VariantKind Kind, bool Hint)
91 : Expr(Expr), Kind(Kind), RelaxHint(Hint) {}
92
93public:
94 static const LoongArchMCExpr *create(const MCExpr *Expr, VariantKind Kind,
95 MCContext &Ctx, bool Hint = false);
96
97 VariantKind getKind() const { return Kind; }
98 const MCExpr *getSubExpr() const { return Expr; }
99 bool getRelaxHint() const { return RelaxHint; }
100
101 void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
102 bool evaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
103 const MCFixup *Fixup) const override;
104 void visitUsedExpr(MCStreamer &Streamer) const override;
105 MCFragment *findAssociatedFragment() const override {
106 return getSubExpr()->findAssociatedFragment();
107 }
108
109 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
110
111 static bool classof(const MCExpr *E) {
112 return E->getKind() == MCExpr::Target;
113 }
114
115 static StringRef getVariantKindName(VariantKind Kind);
116 static VariantKind getVariantKindForName(StringRef name);
117};
118
119} // end namespace llvm
120
121#endif
122