sewardj | b8b79ad | 2008-03-03 01:35:41 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Misc simple stuff lacking a better home. misc.c ---*/ |
| 4 | /*--------------------------------------------------------------------*/ |
| 5 | |
| 6 | /* |
| 7 | This file is part of Valgrind, a dynamic binary instrumentation |
| 8 | framework. |
| 9 | |
sewardj | 0f157dd | 2013-10-18 14:27:36 +0000 | [diff] [blame] | 10 | Copyright (C) 2008-2013 OpenWorks LLP |
sewardj | b8b79ad | 2008-03-03 01:35:41 +0000 | [diff] [blame] | 11 | info@open-works.co.uk |
| 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., 59 Temple Place, Suite 330, Boston, MA |
| 26 | 02111-1307, 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 | #include "pub_core_basics.h" |
| 37 | #include "pub_core_libcbase.h" |
| 38 | #include "pub_core_libcassert.h" |
| 39 | #include "pub_core_mallocfree.h" |
| 40 | #include "pub_core_xarray.h" |
| 41 | |
| 42 | #include "priv_misc.h" /* self */ |
| 43 | |
| 44 | |
florian | 54fe202 | 2012-10-27 23:07:42 +0000 | [diff] [blame] | 45 | void* ML_(dinfo_zalloc) ( const HChar* cc, SizeT szB ) { |
sewardj | b8b79ad | 2008-03-03 01:35:41 +0000 | [diff] [blame] | 46 | void* v; |
| 47 | vg_assert(szB > 0); |
sewardj | 9c606bd | 2008-09-18 18:12:50 +0000 | [diff] [blame] | 48 | v = VG_(arena_malloc)( VG_AR_DINFO, cc, szB ); |
sewardj | b8b79ad | 2008-03-03 01:35:41 +0000 | [diff] [blame] | 49 | VG_(memset)(v, 0, szB); |
| 50 | return v; |
| 51 | } |
| 52 | |
philippe | 0b9d064 | 2014-06-30 19:47:24 +0000 | [diff] [blame] | 53 | void ML_(dinfo_shrink_block)( void* ptr, SizeT szB ) { |
| 54 | VG_(arena_realloc_shrink)( VG_AR_DINFO, ptr, szB ); |
| 55 | } |
| 56 | |
sewardj | b8b79ad | 2008-03-03 01:35:41 +0000 | [diff] [blame] | 57 | void ML_(dinfo_free) ( void* v ) { |
| 58 | VG_(arena_free)( VG_AR_DINFO, v ); |
| 59 | } |
| 60 | |
florian | 1636d33 | 2012-11-15 04:27:04 +0000 | [diff] [blame] | 61 | HChar* ML_(dinfo_strdup) ( const HChar* cc, const HChar* str ) { |
sewardj | 9c606bd | 2008-09-18 18:12:50 +0000 | [diff] [blame] | 62 | return VG_(arena_strdup)( VG_AR_DINFO, cc, str ); |
| 63 | } |
| 64 | |
florian | 518850b | 2014-10-22 22:25:30 +0000 | [diff] [blame] | 65 | void* ML_(dinfo_memdup) ( const HChar* cc, const void* str, SizeT nStr ) { |
florian | 1636d33 | 2012-11-15 04:27:04 +0000 | [diff] [blame] | 66 | void* dst = VG_(arena_malloc)( VG_AR_DINFO, cc, nStr ); |
sewardj | 9c606bd | 2008-09-18 18:12:50 +0000 | [diff] [blame] | 67 | VG_(memcpy)(dst, str, nStr); |
| 68 | return dst; |
sewardj | b8b79ad | 2008-03-03 01:35:41 +0000 | [diff] [blame] | 69 | } |
| 70 | |
florian | 46cc045 | 2014-10-25 19:20:38 +0000 | [diff] [blame] | 71 | void* ML_(dinfo_realloc) ( const HChar* cc, void* ptr, SizeT new_size ) { |
| 72 | void* dst = VG_(arena_realloc)( VG_AR_DINFO, cc, ptr, new_size ); |
| 73 | vg_assert(dst); |
| 74 | return dst; |
| 75 | } |
| 76 | |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 77 | static inline Bool host_is_little_endian ( void ) { |
| 78 | UInt x = 0x76543210; |
| 79 | UChar* p = (UChar*)(&x); |
| 80 | return toBool(*p == 0x10); |
| 81 | } |
| 82 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 83 | Short ML_(readUAS_Short)( const UChar* data ) { |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 84 | Short r = 0; |
| 85 | if (host_is_little_endian()) { |
| 86 | r = data[0] |
| 87 | | ( ((UInt)data[1]) << 8 ); |
| 88 | } else { |
| 89 | r = data[1] |
| 90 | | ( ((UInt)data[0]) << 8 ); |
| 91 | } |
| 92 | return r; |
| 93 | } |
| 94 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 95 | Int ML_(readUAS_Int) ( const UChar* data ) { |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 96 | Int r = 0; |
| 97 | if (host_is_little_endian()) { |
| 98 | r = data[0] |
| 99 | | ( ((UInt)data[1]) << 8 ) |
| 100 | | ( ((UInt)data[2]) << 16 ) |
| 101 | | ( ((UInt)data[3]) << 24 ); |
| 102 | } else { |
| 103 | r = data[3] |
| 104 | | ( ((UInt)data[2]) << 8 ) |
| 105 | | ( ((UInt)data[1]) << 16 ) |
| 106 | | ( ((UInt)data[0]) << 24 ); |
| 107 | } |
| 108 | return r; |
| 109 | } |
| 110 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 111 | Long ML_(readUAS_Long) ( const UChar* data ) { |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 112 | Long r = 0; |
| 113 | if (host_is_little_endian()) { |
| 114 | r = data[0] |
| 115 | | ( ((ULong)data[1]) << 8 ) |
| 116 | | ( ((ULong)data[2]) << 16 ) |
| 117 | | ( ((ULong)data[3]) << 24 ) |
| 118 | | ( ((ULong)data[4]) << 32 ) |
| 119 | | ( ((ULong)data[5]) << 40 ) |
| 120 | | ( ((ULong)data[6]) << 48 ) |
| 121 | | ( ((ULong)data[7]) << 56 ); |
| 122 | } else { |
| 123 | r = data[7] |
| 124 | | ( ((ULong)data[6]) << 8 ) |
| 125 | | ( ((ULong)data[5]) << 16 ) |
| 126 | | ( ((ULong)data[4]) << 24 ) |
| 127 | | ( ((ULong)data[3]) << 32 ) |
| 128 | | ( ((ULong)data[2]) << 40 ) |
| 129 | | ( ((ULong)data[1]) << 48 ) |
| 130 | | ( ((ULong)data[0]) << 56 ); |
| 131 | } |
| 132 | return r; |
| 133 | } |
| 134 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 135 | UShort ML_(readUAS_UShort) ( const UChar* data ) { |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 136 | UInt r = 0; |
| 137 | if (host_is_little_endian()) { |
| 138 | r = data[0] |
| 139 | | ( ((UInt)data[1]) << 8 ); |
| 140 | } else { |
| 141 | r = data[1] |
| 142 | | ( ((UInt)data[0]) << 8 ); |
| 143 | } |
| 144 | return r; |
| 145 | } |
| 146 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 147 | UChar *ML_(writeUAS_UShort) ( UChar* ptr, UShort val ) { |
tom | 86781fa | 2011-10-05 08:48:07 +0000 | [diff] [blame] | 148 | if (host_is_little_endian()) { |
| 149 | ptr[0] = val & 0xff; |
| 150 | ptr[1] = ( val >> 8 ) & 0xff; |
| 151 | } else { |
| 152 | ptr[0] = ( val >> 8 ) & 0xff; |
| 153 | ptr[1] = val & 0xff; |
| 154 | } |
| 155 | return ptr + sizeof(UShort); |
| 156 | } |
| 157 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 158 | UWord ML_(readUAS_UWord) ( const UChar* data ) { |
tom | 86781fa | 2011-10-05 08:48:07 +0000 | [diff] [blame] | 159 | if (sizeof(UWord) == sizeof(UInt)) { |
| 160 | return ML_(read_UInt)(data); |
| 161 | } else if (sizeof(UWord) == sizeof(ULong)) { |
| 162 | return ML_(read_ULong)(data); |
| 163 | } else { |
| 164 | vg_assert(0); |
| 165 | } |
| 166 | } |
| 167 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 168 | UInt ML_(readUAS_UInt) ( const UChar* data ) { |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 169 | UInt r = 0; |
| 170 | if (host_is_little_endian()) { |
| 171 | r = data[0] |
| 172 | | ( ((UInt)data[1]) << 8 ) |
| 173 | | ( ((UInt)data[2]) << 16 ) |
| 174 | | ( ((UInt)data[3]) << 24 ); |
| 175 | } else { |
| 176 | r = data[3] |
| 177 | | ( ((UInt)data[2]) << 8 ) |
| 178 | | ( ((UInt)data[1]) << 16 ) |
| 179 | | ( ((UInt)data[0]) << 24 ); |
| 180 | } |
| 181 | return r; |
| 182 | } |
| 183 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 184 | UChar* ML_(writeUAS_UInt) ( UChar* ptr, UInt val ) { |
tom | 86781fa | 2011-10-05 08:48:07 +0000 | [diff] [blame] | 185 | if (host_is_little_endian()) { |
| 186 | ptr[0] = val & 0xff; |
| 187 | ptr[1] = ( val >> 8 ) & 0xff; |
| 188 | ptr[2] = ( val >> 16 ) & 0xff; |
| 189 | ptr[3] = ( val >> 24 ) & 0xff; |
| 190 | } else { |
| 191 | ptr[0] = ( val >> 24 ) & 0xff; |
| 192 | ptr[1] = ( val >> 16 ) & 0xff; |
| 193 | ptr[2] = ( val >> 8 ) & 0xff; |
| 194 | ptr[3] = val & 0xff; |
| 195 | } |
| 196 | return ptr + sizeof(UInt); |
| 197 | } |
| 198 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 199 | ULong ML_(readUAS_ULong) ( const UChar* data ) { |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 200 | ULong r = 0; |
| 201 | if (host_is_little_endian()) { |
| 202 | r = data[0] |
| 203 | | ( ((ULong)data[1]) << 8 ) |
| 204 | | ( ((ULong)data[2]) << 16 ) |
| 205 | | ( ((ULong)data[3]) << 24 ) |
| 206 | | ( ((ULong)data[4]) << 32 ) |
| 207 | | ( ((ULong)data[5]) << 40 ) |
| 208 | | ( ((ULong)data[6]) << 48 ) |
| 209 | | ( ((ULong)data[7]) << 56 ); |
| 210 | } else { |
| 211 | r = data[7] |
| 212 | | ( ((ULong)data[6]) << 8 ) |
| 213 | | ( ((ULong)data[5]) << 16 ) |
| 214 | | ( ((ULong)data[4]) << 24 ) |
| 215 | | ( ((ULong)data[3]) << 32 ) |
| 216 | | ( ((ULong)data[2]) << 40 ) |
| 217 | | ( ((ULong)data[1]) << 48 ) |
| 218 | | ( ((ULong)data[0]) << 56 ); |
| 219 | } |
| 220 | return r; |
| 221 | } |
| 222 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 223 | UChar* ML_(writeUAS_ULong) ( UChar* ptr, ULong val ) { |
tom | 86781fa | 2011-10-05 08:48:07 +0000 | [diff] [blame] | 224 | if (host_is_little_endian()) { |
| 225 | ptr[0] = val & 0xff; |
| 226 | ptr[1] = ( val >> 8 ) & 0xff; |
| 227 | ptr[2] = ( val >> 16 ) & 0xff; |
| 228 | ptr[3] = ( val >> 24 ) & 0xff; |
| 229 | ptr[4] = ( val >> 32 ) & 0xff; |
| 230 | ptr[5] = ( val >> 40 ) & 0xff; |
| 231 | ptr[6] = ( val >> 48 ) & 0xff; |
| 232 | ptr[7] = ( val >> 56 ) & 0xff; |
| 233 | } else { |
| 234 | ptr[0] = ( val >> 56 ) & 0xff; |
| 235 | ptr[1] = ( val >> 48 ) & 0xff; |
| 236 | ptr[2] = ( val >> 40 ) & 0xff; |
| 237 | ptr[3] = ( val >> 32 ) & 0xff; |
| 238 | ptr[4] = ( val >> 24 ) & 0xff; |
| 239 | ptr[5] = ( val >> 16 ) & 0xff; |
| 240 | ptr[6] = ( val >> 8 ) & 0xff; |
| 241 | ptr[7] = val & 0xff; |
| 242 | } |
| 243 | return ptr + sizeof(ULong); |
| 244 | } |
| 245 | |
tom | d32fb2b | 2011-10-02 10:20:12 +0000 | [diff] [blame] | 246 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 247 | Addr ML_(readUAS_Addr) ( const UChar* data ) { |
tom | fd892fc | 2011-10-02 12:12:38 +0000 | [diff] [blame] | 248 | if (sizeof(Addr) == sizeof(UInt)) { |
| 249 | return ML_(read_UInt)(data); |
| 250 | } else if (sizeof(Addr) == sizeof(ULong)) { |
| 251 | return ML_(read_ULong)(data); |
| 252 | } else { |
| 253 | vg_assert(0); |
| 254 | } |
| 255 | } |
| 256 | |
philippe | c474069 | 2015-05-25 20:15:25 +0000 | [diff] [blame] | 257 | UChar* ML_(writeUAS_Addr) ( UChar* ptr, Addr val ) { |
tom | 86781fa | 2011-10-05 08:48:07 +0000 | [diff] [blame] | 258 | if (sizeof(Addr) == sizeof(UInt)) { |
| 259 | return ML_(write_UInt)(ptr, val); |
| 260 | } else if (sizeof(Addr) == sizeof(ULong)) { |
| 261 | return ML_(write_ULong)(ptr, val); |
| 262 | } else { |
| 263 | vg_assert(0); |
| 264 | } |
| 265 | } |
| 266 | |
sewardj | b8b79ad | 2008-03-03 01:35:41 +0000 | [diff] [blame] | 267 | /*--------------------------------------------------------------------*/ |
| 268 | /*--- end misc.c ---*/ |
| 269 | /*--------------------------------------------------------------------*/ |