]>
Commit | Line | Data |
---|---|---|
1a4d82fc JJ |
1 | //===-- PPCMCExpr.h - PPC specific MC expression classes --------*- C++ -*-===// |
2 | // | |
3 | // The LLVM Compiler Infrastructure | |
4 | // | |
5 | // This file is distributed under the University of Illinois Open Source | |
6 | // License. See LICENSE.TXT for details. | |
7 | // | |
8 | //===----------------------------------------------------------------------===// | |
9 | ||
10 | #ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H | |
11 | #define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H | |
12 | ||
13 | #include "llvm/MC/MCAsmLayout.h" | |
14 | #include "llvm/MC/MCExpr.h" | |
15 | #include "llvm/MC/MCValue.h" | |
16 | ||
17 | namespace llvm { | |
18 | ||
19 | class PPCMCExpr : public MCTargetExpr { | |
20 | public: | |
21 | enum VariantKind { | |
22 | VK_PPC_None, | |
23 | VK_PPC_LO, | |
24 | VK_PPC_HI, | |
25 | VK_PPC_HA, | |
26 | VK_PPC_HIGHER, | |
27 | VK_PPC_HIGHERA, | |
28 | VK_PPC_HIGHEST, | |
29 | VK_PPC_HIGHESTA | |
30 | }; | |
31 | ||
32 | private: | |
33 | const VariantKind Kind; | |
34 | const MCExpr *Expr; | |
35 | bool IsDarwin; | |
36 | ||
37 | int64_t EvaluateAsInt64(int64_t Value) const; | |
38 | ||
39 | explicit PPCMCExpr(VariantKind _Kind, const MCExpr *_Expr, | |
40 | bool _IsDarwin) | |
41 | : Kind(_Kind), Expr(_Expr), IsDarwin(_IsDarwin) {} | |
42 | ||
43 | public: | |
44 | /// @name Construction | |
45 | /// @{ | |
46 | ||
47 | static const PPCMCExpr *Create(VariantKind Kind, const MCExpr *Expr, | |
48 | bool isDarwin, MCContext &Ctx); | |
49 | ||
50 | static const PPCMCExpr *CreateLo(const MCExpr *Expr, | |
51 | bool isDarwin, MCContext &Ctx) { | |
52 | return Create(VK_PPC_LO, Expr, isDarwin, Ctx); | |
53 | } | |
54 | ||
55 | static const PPCMCExpr *CreateHi(const MCExpr *Expr, | |
56 | bool isDarwin, MCContext &Ctx) { | |
57 | return Create(VK_PPC_HI, Expr, isDarwin, Ctx); | |
58 | } | |
59 | ||
60 | static const PPCMCExpr *CreateHa(const MCExpr *Expr, | |
61 | bool isDarwin, MCContext &Ctx) { | |
62 | return Create(VK_PPC_HA, Expr, isDarwin, Ctx); | |
63 | } | |
64 | ||
65 | /// @} | |
66 | /// @name Accessors | |
67 | /// @{ | |
68 | ||
69 | /// getOpcode - Get the kind of this expression. | |
70 | VariantKind getKind() const { return Kind; } | |
71 | ||
72 | /// getSubExpr - Get the child of this expression. | |
73 | const MCExpr *getSubExpr() const { return Expr; } | |
74 | ||
75 | /// isDarwinSyntax - True if expression is to be printed using Darwin syntax. | |
76 | bool isDarwinSyntax() const { return IsDarwin; } | |
77 | ||
78 | ||
79 | /// @} | |
80 | ||
81 | void PrintImpl(raw_ostream &OS) const override; | |
82 | bool EvaluateAsRelocatableImpl(MCValue &Res, | |
83 | const MCAsmLayout *Layout, | |
84 | const MCFixup *Fixup) const override; | |
85 | void visitUsedExpr(MCStreamer &Streamer) const override; | |
86 | const MCSection *FindAssociatedSection() const override { | |
87 | return getSubExpr()->FindAssociatedSection(); | |
88 | } | |
89 | ||
90 | // There are no TLS PPCMCExprs at the moment. | |
91 | void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {} | |
92 | ||
93 | bool EvaluateAsConstant(int64_t &Res) const; | |
94 | ||
95 | static bool classof(const MCExpr *E) { | |
96 | return E->getKind() == MCExpr::Target; | |
97 | } | |
98 | }; | |
99 | } // end namespace llvm | |
100 | ||
101 | #endif |