blob: ee35b45c6898eff406100a09ae55620111286e34 [file] [log] [blame]
Evan Chengbc153d42011-07-14 20:59:42 +00001//===-- PPCMCTargetDesc.h - PowerPC Target Descriptions ---------*- 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 provides PowerPC specific target descriptions.
11//
12//===----------------------------------------------------------------------===//
13
Benjamin Kramera7c40ef2014-08-13 16:26:38 +000014#ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H
15#define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H
Evan Chengbc153d42011-07-14 20:59:42 +000016
Rafael Espindolafb8ac2d2012-12-20 05:13:09 +000017// GCC #defines PPC on Linux but we use it as our namespace name
18#undef PPC
19
Rafael Espindola38a400d2011-12-22 01:57:09 +000020#include "llvm/Support/DataTypes.h"
Hal Finkel6e9110a2015-03-28 19:42:41 +000021#include "llvm/Support/MathExtras.h"
Rafael Espindola38a400d2011-12-22 01:57:09 +000022
Evan Chengbc153d42011-07-14 20:59:42 +000023namespace llvm {
Evan Cheng5928e692011-07-25 23:24:55 +000024class MCAsmBackend;
Evan Cheng61d4a202011-07-25 19:53:23 +000025class MCCodeEmitter;
26class MCContext;
27class MCInstrInfo;
Rafael Espindola38a400d2011-12-22 01:57:09 +000028class MCObjectWriter;
Jim Grosbachc3b04272012-05-15 17:35:52 +000029class MCRegisterInfo;
Evan Chengbc153d42011-07-14 20:59:42 +000030class MCSubtargetInfo;
Joel Jones373d7d32016-07-25 17:18:28 +000031class MCTargetOptions;
Evan Chengbc153d42011-07-14 20:59:42 +000032class Target;
Daniel Sanders50f17232015-09-15 16:17:27 +000033class Triple;
Evan Chengbc153d42011-07-14 20:59:42 +000034class StringRef;
Rafael Espindola5560a4c2015-04-14 22:14:34 +000035class raw_pwrite_stream;
Rafael Espindola38a400d2011-12-22 01:57:09 +000036class raw_ostream;
Evan Chengbc153d42011-07-14 20:59:42 +000037
38extern Target ThePPC32Target;
39extern Target ThePPC64Target;
Bill Schmidt0a9170d2013-07-26 01:35:43 +000040extern Target ThePPC64LETarget;
Eric Christopher0169e422015-03-10 22:03:14 +000041
Evan Cheng61d4a202011-07-25 19:53:23 +000042MCCodeEmitter *createPPCMCCodeEmitter(const MCInstrInfo &MCII,
Jim Grosbachc3b04272012-05-15 17:35:52 +000043 const MCRegisterInfo &MRI,
Evan Cheng61d4a202011-07-25 19:53:23 +000044 MCContext &Ctx);
45
Bill Wendling58e2d3d2013-09-09 02:37:14 +000046MCAsmBackend *createPPCAsmBackend(const Target &T, const MCRegisterInfo &MRI,
Joel Jones373d7d32016-07-25 17:18:28 +000047 const Triple &TT, StringRef CPU,
48 const MCTargetOptions &Options);
Rafael Espindola38a400d2011-12-22 01:57:09 +000049
Rafael Espindoladf7305a2015-04-09 17:10:57 +000050/// Construct an PPC ELF object writer.
Rafael Espindola5560a4c2015-04-14 22:14:34 +000051MCObjectWriter *createPPCELFObjectWriter(raw_pwrite_stream &OS, bool Is64Bit,
52 bool IsLittleEndian, uint8_t OSABI);
Rafael Espindoladf7305a2015-04-09 17:10:57 +000053/// Construct a PPC Mach-O object writer.
Rafael Espindola5560a4c2015-04-14 22:14:34 +000054MCObjectWriter *createPPCMachObjectWriter(raw_pwrite_stream &OS, bool Is64Bit,
David Fangb88cdf62013-08-08 20:14:40 +000055 uint32_t CPUType,
56 uint32_t CPUSubtype);
Hal Finkel6e9110a2015-03-28 19:42:41 +000057
Rafael Espindoladf7305a2015-04-09 17:10:57 +000058/// Returns true iff Val consists of one contiguous run of 1s with any number of
59/// 0s on either side. The 1s are allowed to wrap from LSB to MSB, so
60/// 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs. 0x0F0F0000 is not,
61/// since all 1s are not contiguous.
Hal Finkel6e9110a2015-03-28 19:42:41 +000062static inline bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME) {
63 if (!Val)
64 return false;
65
66 if (isShiftedMask_32(Val)) {
67 // look for the first non-zero bit
68 MB = countLeadingZeros(Val);
69 // look for the first zero bit after the run of ones
70 ME = countLeadingZeros((Val - 1) ^ Val);
71 return true;
72 } else {
73 Val = ~Val; // invert mask
74 if (isShiftedMask_32(Val)) {
75 // effectively look for the first zero bit
76 ME = countLeadingZeros(Val) - 1;
77 // effectively look for the first one bit after the run of zeros
78 MB = countLeadingZeros((Val - 1) ^ Val) + 1;
79 return true;
80 }
81 }
82 // no run present
83 return false;
84}
85
Alexander Kornienkof00654e2015-06-23 09:49:53 +000086} // End llvm namespace
Evan Chengbc153d42011-07-14 20:59:42 +000087
Sylvestre Ledru37ef20d2013-03-17 12:40:42 +000088// Generated files will use "namespace PPC". To avoid symbol clash,
89// undefine PPC here. PPC may be predefined on some hosts.
90#undef PPC
91
Evan Chengbc153d42011-07-14 20:59:42 +000092// Defines symbolic names for PowerPC registers. This defines a mapping from
93// register name to register number.
94//
95#define GET_REGINFO_ENUM
96#include "PPCGenRegisterInfo.inc"
97
98// Defines symbolic names for the PowerPC instructions.
99//
100#define GET_INSTRINFO_ENUM
101#include "PPCGenInstrInfo.inc"
102
103#define GET_SUBTARGETINFO_ENUM
104#include "PPCGenSubtargetInfo.inc"
105
106#endif