Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 1 | //===-- 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 Kramer | a7c40ef | 2014-08-13 16:26:38 +0000 | [diff] [blame] | 14 | #ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H |
| 15 | #define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H |
Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 16 | |
Rafael Espindola | fb8ac2d | 2012-12-20 05:13:09 +0000 | [diff] [blame] | 17 | // GCC #defines PPC on Linux but we use it as our namespace name |
| 18 | #undef PPC |
| 19 | |
Rafael Espindola | 38a400d | 2011-12-22 01:57:09 +0000 | [diff] [blame] | 20 | #include "llvm/Support/DataTypes.h" |
Hal Finkel | 6e9110a | 2015-03-28 19:42:41 +0000 | [diff] [blame] | 21 | #include "llvm/Support/MathExtras.h" |
Rafael Espindola | 38a400d | 2011-12-22 01:57:09 +0000 | [diff] [blame] | 22 | |
Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 23 | namespace llvm { |
Evan Cheng | 5928e69 | 2011-07-25 23:24:55 +0000 | [diff] [blame] | 24 | class MCAsmBackend; |
Evan Cheng | 61d4a20 | 2011-07-25 19:53:23 +0000 | [diff] [blame] | 25 | class MCCodeEmitter; |
| 26 | class MCContext; |
| 27 | class MCInstrInfo; |
Rafael Espindola | 38a400d | 2011-12-22 01:57:09 +0000 | [diff] [blame] | 28 | class MCObjectWriter; |
Jim Grosbach | c3b0427 | 2012-05-15 17:35:52 +0000 | [diff] [blame] | 29 | class MCRegisterInfo; |
Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 30 | class MCSubtargetInfo; |
Joel Jones | 373d7d3 | 2016-07-25 17:18:28 +0000 | [diff] [blame^] | 31 | class MCTargetOptions; |
Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 32 | class Target; |
Daniel Sanders | 50f1723 | 2015-09-15 16:17:27 +0000 | [diff] [blame] | 33 | class Triple; |
Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 34 | class StringRef; |
Rafael Espindola | 5560a4c | 2015-04-14 22:14:34 +0000 | [diff] [blame] | 35 | class raw_pwrite_stream; |
Rafael Espindola | 38a400d | 2011-12-22 01:57:09 +0000 | [diff] [blame] | 36 | class raw_ostream; |
Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 37 | |
| 38 | extern Target ThePPC32Target; |
| 39 | extern Target ThePPC64Target; |
Bill Schmidt | 0a9170d | 2013-07-26 01:35:43 +0000 | [diff] [blame] | 40 | extern Target ThePPC64LETarget; |
Eric Christopher | 0169e42 | 2015-03-10 22:03:14 +0000 | [diff] [blame] | 41 | |
Evan Cheng | 61d4a20 | 2011-07-25 19:53:23 +0000 | [diff] [blame] | 42 | MCCodeEmitter *createPPCMCCodeEmitter(const MCInstrInfo &MCII, |
Jim Grosbach | c3b0427 | 2012-05-15 17:35:52 +0000 | [diff] [blame] | 43 | const MCRegisterInfo &MRI, |
Evan Cheng | 61d4a20 | 2011-07-25 19:53:23 +0000 | [diff] [blame] | 44 | MCContext &Ctx); |
| 45 | |
Bill Wendling | 58e2d3d | 2013-09-09 02:37:14 +0000 | [diff] [blame] | 46 | MCAsmBackend *createPPCAsmBackend(const Target &T, const MCRegisterInfo &MRI, |
Joel Jones | 373d7d3 | 2016-07-25 17:18:28 +0000 | [diff] [blame^] | 47 | const Triple &TT, StringRef CPU, |
| 48 | const MCTargetOptions &Options); |
Rafael Espindola | 38a400d | 2011-12-22 01:57:09 +0000 | [diff] [blame] | 49 | |
Rafael Espindola | df7305a | 2015-04-09 17:10:57 +0000 | [diff] [blame] | 50 | /// Construct an PPC ELF object writer. |
Rafael Espindola | 5560a4c | 2015-04-14 22:14:34 +0000 | [diff] [blame] | 51 | MCObjectWriter *createPPCELFObjectWriter(raw_pwrite_stream &OS, bool Is64Bit, |
| 52 | bool IsLittleEndian, uint8_t OSABI); |
Rafael Espindola | df7305a | 2015-04-09 17:10:57 +0000 | [diff] [blame] | 53 | /// Construct a PPC Mach-O object writer. |
Rafael Espindola | 5560a4c | 2015-04-14 22:14:34 +0000 | [diff] [blame] | 54 | MCObjectWriter *createPPCMachObjectWriter(raw_pwrite_stream &OS, bool Is64Bit, |
David Fang | b88cdf6 | 2013-08-08 20:14:40 +0000 | [diff] [blame] | 55 | uint32_t CPUType, |
| 56 | uint32_t CPUSubtype); |
Hal Finkel | 6e9110a | 2015-03-28 19:42:41 +0000 | [diff] [blame] | 57 | |
Rafael Espindola | df7305a | 2015-04-09 17:10:57 +0000 | [diff] [blame] | 58 | /// 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 Finkel | 6e9110a | 2015-03-28 19:42:41 +0000 | [diff] [blame] | 62 | static 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 Kornienko | f00654e | 2015-06-23 09:49:53 +0000 | [diff] [blame] | 86 | } // End llvm namespace |
Evan Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 87 | |
Sylvestre Ledru | 37ef20d | 2013-03-17 12:40:42 +0000 | [diff] [blame] | 88 | // 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 Cheng | bc153d4 | 2011-07-14 20:59:42 +0000 | [diff] [blame] | 92 | // 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 |