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1 //===-- PPC.h - Top-level interface for PowerPC Target ----------*- 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 the entry points for global functions defined in the LLVM
11 // PowerPC back-end.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_TARGET_POWERPC_H
16 #define LLVM_TARGET_POWERPC_H
17 
18 #include "MCTargetDesc/PPCBaseInfo.h"
19 #include "MCTargetDesc/PPCMCTargetDesc.h"
20 #include <string>
21 
22 // GCC #defines PPC on Linux but we use it as our namespace name
23 #undef PPC
24 
25 namespace llvm {
26   class PPCTargetMachine;
27   class FunctionPass;
28   class formatted_raw_ostream;
29   class JITCodeEmitter;
30   class Target;
31   class MachineInstr;
32   class AsmPrinter;
33   class MCInst;
34   class TargetMachine;
35 
36   FunctionPass *createPPCBranchSelectionPass();
37   FunctionPass *createPPCISelDag(PPCTargetMachine &TM);
38   FunctionPass *createPPCJITCodeEmitterPass(PPCTargetMachine &TM,
39                                             JITCodeEmitter &MCE);
40   void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
41                                     AsmPrinter &AP, bool isDarwin);
42 
43   namespace PPCII {
44 
45   /// Target Operand Flag enum.
46   enum TOF {
47     //===------------------------------------------------------------------===//
48     // PPC Specific MachineOperand flags.
49     MO_NO_FLAG,
50 
51     /// MO_DARWIN_STUB - On a symbol operand "FOO", this indicates that the
52     /// reference is actually to the "FOO$stub" symbol.  This is used for calls
53     /// and jumps to external functions on Tiger and earlier.
54     MO_DARWIN_STUB = 1,
55 
56     /// MO_LO16, MO_HA16 - lo16(symbol) and ha16(symbol)
57     MO_LO16 = 4, MO_HA16 = 8,
58 
59     /// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
60     /// the function's picbase, e.g. lo16(symbol-picbase).
61     MO_PIC_FLAG = 16,
62 
63     /// MO_NLP_FLAG - If this bit is set, the symbol reference is actually to
64     /// the non_lazy_ptr for the global, e.g. lo16(symbol$non_lazy_ptr-picbase).
65     MO_NLP_FLAG = 32,
66 
67     /// MO_NLP_HIDDEN_FLAG - If this bit is set, the symbol reference is to a
68     /// symbol with hidden visibility.  This causes a different kind of
69     /// non-lazy-pointer to be generated.
70     MO_NLP_HIDDEN_FLAG = 64
71   };
72   } // end namespace PPCII
73 
74 } // end namespace llvm;
75 
76 #endif
77