1 2 /*---------------------------------------------------------------*/ 3 /*--- begin libvex_basictypes.h ---*/ 4 /*---------------------------------------------------------------*/ 5 6 /* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2004-2011 OpenWorks LLP 11 info (at) open-works.net 12 13 This program is free software; you can redistribute it and/or 14 modify it under the terms of the GNU General Public License as 15 published by the Free Software Foundation; either version 2 of the 16 License, or (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, but 19 WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 26 02110-1301, USA. 27 28 The GNU General Public License is contained in the file COPYING. 29 30 Neither the names of the U.S. Department of Energy nor the 31 University of California nor the names of its contributors may be 32 used to endorse or promote products derived from this software 33 without prior written permission. 34 */ 35 36 #ifndef __LIBVEX_BASICTYPES_H 37 #define __LIBVEX_BASICTYPES_H 38 39 /* It is important that the sizes of the following data types (on the 40 host) are as stated. LibVEX_Init therefore checks these at 41 startup. */ 42 43 /* Always 8 bits. */ 44 typedef unsigned char UChar; 45 typedef signed char Char; 46 typedef char HChar; /* signfulness depends on host */ 47 /* Only to be used for printf etc 48 format strings */ 49 50 /* Always 16 bits. */ 51 typedef unsigned short UShort; 52 typedef signed short Short; 53 54 /* Always 32 bits. */ 55 typedef unsigned int UInt; 56 typedef signed int Int; 57 58 /* Always 64 bits. */ 59 typedef unsigned long long int ULong; 60 typedef signed long long int Long; 61 62 /* Always 128 bits. */ 63 typedef UInt U128[4]; 64 65 /* A union for doing 128-bit vector primitives conveniently. */ 66 typedef 67 union { 68 UChar w8[16]; 69 UShort w16[8]; 70 UInt w32[4]; 71 ULong w64[2]; 72 } 73 V128; 74 75 /* Floating point. */ 76 typedef float Float; /* IEEE754 single-precision (32-bit) value */ 77 typedef double Double; /* IEEE754 double-precision (64-bit) value */ 78 79 /* Bool is always 8 bits. */ 80 typedef unsigned char Bool; 81 #define True ((Bool)1) 82 #define False ((Bool)0) 83 84 /* Use this to coerce the result of a C comparison to a Bool. This is 85 useful when compiling with Intel icc with ultra-paranoid 86 compilation flags (-Wall). */ 87 static inline Bool toBool ( Int x ) { 88 Int r = (x == 0) ? False : True; 89 return (Bool)r; 90 } 91 static inline UChar toUChar ( Int x ) { 92 x &= 0xFF; 93 return (UChar)x; 94 } 95 static inline HChar toHChar ( Int x ) { 96 x &= 0xFF; 97 return (HChar)x; 98 } 99 static inline UShort toUShort ( Int x ) { 100 x &= 0xFFFF; 101 return (UShort)x; 102 } 103 static inline Short toShort ( Int x ) { 104 x &= 0xFFFF; 105 return (Short)x; 106 } 107 static inline UInt toUInt ( Long x ) { 108 x &= 0xFFFFFFFFLL; 109 return (UInt)x; 110 } 111 112 /* 32/64 bit addresses. */ 113 typedef UInt Addr32; 114 typedef ULong Addr64; 115 116 /* Something which has the same size as void* on the host. That is, 117 it is 32 bits on a 32-bit host and 64 bits on a 64-bit host, and so 118 it can safely be coerced to and from a pointer type on the host 119 machine. */ 120 typedef unsigned long HWord; 121 122 123 /* This is so useful it should be visible absolutely everywhere. */ 124 #if !defined(offsetof) 125 # define offsetof(type,memb) ((Int)(HWord)&((type*)0)->memb) 126 #endif 127 128 129 /* We need to know the host word size in order to write Ptr_to_ULong 130 and ULong_to_Ptr in a way that doesn't cause compilers to complain. 131 These functions allow us to cast pointers to and from 64-bit 132 integers without complaints from compilers, regardless of the host 133 word size. 134 135 Also set up VEX_REGPARM. 136 */ 137 138 #undef VEX_HOST_WORDSIZE 139 #undef VEX_REGPARM 140 141 /* The following 4 work OK for Linux. */ 142 #if defined(__x86_64__) 143 # define VEX_HOST_WORDSIZE 8 144 # define VEX_REGPARM(_n) /* */ 145 146 #elif defined(__i386__) 147 # define VEX_HOST_WORDSIZE 4 148 # define VEX_REGPARM(_n) __attribute__((regparm(_n))) 149 150 #elif defined(__powerpc__) && defined(__powerpc64__) 151 # define VEX_HOST_WORDSIZE 8 152 # define VEX_REGPARM(_n) /* */ 153 154 #elif defined(__powerpc__) && !defined(__powerpc64__) 155 # define VEX_HOST_WORDSIZE 4 156 # define VEX_REGPARM(_n) /* */ 157 158 #elif defined(__arm__) 159 # define VEX_HOST_WORDSIZE 4 160 # define VEX_REGPARM(_n) /* */ 161 162 #elif defined(_AIX) && !defined(__64BIT__) 163 # define VEX_HOST_WORDSIZE 4 164 # define VEX_REGPARM(_n) /* */ 165 166 #elif defined(_AIX) && defined(__64BIT__) 167 # define VEX_HOST_WORDSIZE 8 168 # define VEX_REGPARM(_n) /* */ 169 170 #elif defined(__s390x__) 171 # define VEX_HOST_WORDSIZE 8 172 # define VEX_REGPARM(_n) /* */ 173 174 #else 175 # error "Vex: Fatal: Can't establish the host architecture" 176 #endif 177 178 179 #if VEX_HOST_WORDSIZE == 8 180 static inline ULong Ptr_to_ULong ( void* p ) { 181 return (ULong)p; 182 } 183 static inline void* ULong_to_Ptr ( ULong n ) { 184 return (void*)n; 185 } 186 #elif VEX_HOST_WORDSIZE == 4 187 static inline ULong Ptr_to_ULong ( void* p ) { 188 UInt w = (UInt)p; 189 return (ULong)w; 190 } 191 static inline void* ULong_to_Ptr ( ULong n ) { 192 UInt w = (UInt)n; 193 return (void*)w; 194 } 195 #else 196 # error "Vex: Fatal: Can't define Ptr_to_ULong / ULong_to_Ptr" 197 #endif 198 199 200 #endif /* ndef __LIBVEX_BASICTYPES_H */ 201 202 /*---------------------------------------------------------------*/ 203 /*--- libvex_basictypes.h ---*/ 204 /*---------------------------------------------------------------*/ 205
