MipsBaseInfo.h revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
1//===-- MipsBaseInfo.h - Top level definitions for MIPS MC ------*- 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// This file contains small standalone helper functions and enum definitions for
11// the Mips target useful for the compiler back-end and the MC libraries.
12//
13//===----------------------------------------------------------------------===//
14#ifndef MIPSBASEINFO_H
15#define MIPSBASEINFO_H
16
17#include "MipsFixupKinds.h"
18#include "MipsMCTargetDesc.h"
19#include "llvm/MC/MCExpr.h"
20#include "llvm/Support/DataTypes.h"
21#include "llvm/Support/ErrorHandling.h"
22
23namespace llvm {
24
25/// MipsII - This namespace holds all of the target specific flags that
26/// instruction info tracks.
27///
28namespace MipsII {
29  /// Target Operand Flag enum.
30  enum TOF {
31    //===------------------------------------------------------------------===//
32    // Mips Specific MachineOperand flags.
33
34    MO_NO_FLAG,
35
36    /// MO_GOT16 - Represents the offset into the global offset table at which
37    /// the address the relocation entry symbol resides during execution.
38    MO_GOT16,
39    MO_GOT,
40
41    /// MO_GOT_CALL - Represents the offset into the global offset table at
42    /// which the address of a call site relocation entry symbol resides
43    /// during execution. This is different from the above since this flag
44    /// can only be present in call instructions.
45    MO_GOT_CALL,
46
47    /// MO_GPREL - Represents the offset from the current gp value to be used
48    /// for the relocatable object file being produced.
49    MO_GPREL,
50
51    /// MO_ABS_HI/LO - Represents the hi or low part of an absolute symbol
52    /// address.
53    MO_ABS_HI,
54    MO_ABS_LO,
55
56    /// MO_TLSGD - Represents the offset into the global offset table at which
57    // the module ID and TSL block offset reside during execution (General
58    // Dynamic TLS).
59    MO_TLSGD,
60
61    /// MO_TLSLDM - Represents the offset into the global offset table at which
62    // the module ID and TSL block offset reside during execution (Local
63    // Dynamic TLS).
64    MO_TLSLDM,
65    MO_DTPREL_HI,
66    MO_DTPREL_LO,
67
68    /// MO_GOTTPREL - Represents the offset from the thread pointer (Initial
69    // Exec TLS).
70    MO_GOTTPREL,
71
72    /// MO_TPREL_HI/LO - Represents the hi and low part of the offset from
73    // the thread pointer (Local Exec TLS).
74    MO_TPREL_HI,
75    MO_TPREL_LO,
76
77    // N32/64 Flags.
78    MO_GPOFF_HI,
79    MO_GPOFF_LO,
80    MO_GOT_DISP,
81    MO_GOT_PAGE,
82    MO_GOT_OFST,
83
84    /// MO_HIGHER/HIGHEST - Represents the highest or higher half word of a
85    /// 64-bit symbol address.
86    MO_HIGHER,
87    MO_HIGHEST,
88
89    /// MO_GOT_HI16/LO16, MO_CALL_HI16/LO16 - Relocations used for large GOTs.
90    MO_GOT_HI16,
91    MO_GOT_LO16,
92    MO_CALL_HI16,
93    MO_CALL_LO16
94  };
95
96  enum {
97    //===------------------------------------------------------------------===//
98    // Instruction encodings.  These are the standard/most common forms for
99    // Mips instructions.
100    //
101
102    // Pseudo - This represents an instruction that is a pseudo instruction
103    // or one that has not been implemented yet.  It is illegal to code generate
104    // it, but tolerated for intermediate implementation stages.
105    Pseudo   = 0,
106
107    /// FrmR - This form is for instructions of the format R.
108    FrmR  = 1,
109    /// FrmI - This form is for instructions of the format I.
110    FrmI  = 2,
111    /// FrmJ - This form is for instructions of the format J.
112    FrmJ  = 3,
113    /// FrmFR - This form is for instructions of the format FR.
114    FrmFR = 4,
115    /// FrmFI - This form is for instructions of the format FI.
116    FrmFI = 5,
117    /// FrmOther - This form is for instructions that have no specific format.
118    FrmOther = 6,
119
120    FormMask = 15
121  };
122}
123}
124
125#endif
126