sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Reimplementation of some C library stuff, to avoid depending ---*/ |
| 4 | /*--- on libc.so. ---*/ |
| 5 | /*--- vg_mylibc.c ---*/ |
| 6 | /*--------------------------------------------------------------------*/ |
| 7 | |
| 8 | /* |
njn | c953984 | 2002-10-02 13:26:35 +0000 | [diff] [blame] | 9 | This file is part of Valgrind, an extensible x86 protected-mode |
| 10 | emulator for monitoring program execution on x86-Unixes. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 11 | |
nethercote | bb1c991 | 2004-01-04 16:43:23 +0000 | [diff] [blame] | 12 | Copyright (C) 2000-2004 Julian Seward |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 13 | jseward@acm.org |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 14 | |
| 15 | This program is free software; you can redistribute it and/or |
| 16 | modify it under the terms of the GNU General Public License as |
| 17 | published by the Free Software Foundation; either version 2 of the |
| 18 | License, or (at your option) any later version. |
| 19 | |
| 20 | This program is distributed in the hope that it will be useful, but |
| 21 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | General Public License for more details. |
| 24 | |
| 25 | You should have received a copy of the GNU General Public License |
| 26 | along with this program; if not, write to the Free Software |
| 27 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 28 | 02111-1307, USA. |
| 29 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 30 | The GNU General Public License is contained in the file COPYING. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 31 | */ |
| 32 | |
| 33 | #include "vg_include.h" |
| 34 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 35 | /* --------------------------------------------------------------------- |
| 36 | Wrappers around system calls, and other stuff, to do with signals. |
| 37 | ------------------------------------------------------------------ */ |
| 38 | |
| 39 | /* sigemptyset, sigfullset, sigaddset and sigdelset return 0 on |
| 40 | success and -1 on error. |
| 41 | */ |
| 42 | Int VG_(ksigfillset)( vki_ksigset_t* set ) |
| 43 | { |
| 44 | Int i; |
| 45 | if (set == NULL) |
| 46 | return -1; |
| 47 | for (i = 0; i < VKI_KNSIG_WORDS; i++) |
| 48 | set->ws[i] = 0xFFFFFFFF; |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | Int VG_(ksigemptyset)( vki_ksigset_t* set ) |
| 53 | { |
| 54 | Int i; |
| 55 | if (set == NULL) |
| 56 | return -1; |
| 57 | for (i = 0; i < VKI_KNSIG_WORDS; i++) |
| 58 | set->ws[i] = 0x0; |
| 59 | return 0; |
| 60 | } |
| 61 | |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 62 | Bool VG_(kisemptysigset)( vki_ksigset_t* set ) |
| 63 | { |
| 64 | Int i; |
| 65 | vg_assert(set != NULL); |
| 66 | for (i = 0; i < VKI_KNSIG_WORDS; i++) |
| 67 | if (set->ws[i] != 0x0) return False; |
| 68 | return True; |
| 69 | } |
| 70 | |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 71 | Bool VG_(kisfullsigset)( vki_ksigset_t* set ) |
| 72 | { |
| 73 | Int i; |
| 74 | vg_assert(set != NULL); |
| 75 | for (i = 0; i < VKI_KNSIG_WORDS; i++) |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 76 | if (set->ws[i] != (UInt)(~0x0)) return False; |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 77 | return True; |
| 78 | } |
| 79 | |
| 80 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 81 | Int VG_(ksigaddset)( vki_ksigset_t* set, Int signum ) |
| 82 | { |
| 83 | if (set == NULL) |
| 84 | return -1; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 85 | if (signum < 1 || signum > VKI_KNSIG) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 86 | return -1; |
| 87 | signum--; |
| 88 | set->ws[signum / VKI_KNSIG_BPW] |= (1 << (signum % VKI_KNSIG_BPW)); |
| 89 | return 0; |
| 90 | } |
| 91 | |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 92 | Int VG_(ksigdelset)( vki_ksigset_t* set, Int signum ) |
| 93 | { |
| 94 | if (set == NULL) |
| 95 | return -1; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 96 | if (signum < 1 || signum > VKI_KNSIG) |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 97 | return -1; |
| 98 | signum--; |
| 99 | set->ws[signum / VKI_KNSIG_BPW] &= ~(1 << (signum % VKI_KNSIG_BPW)); |
| 100 | return 0; |
| 101 | } |
| 102 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 103 | Int VG_(ksigismember) ( vki_ksigset_t* set, Int signum ) |
| 104 | { |
| 105 | if (set == NULL) |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 106 | return 0; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 107 | if (signum < 1 || signum > VKI_KNSIG) |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 108 | return 0; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 109 | signum--; |
| 110 | if (1 & ((set->ws[signum / VKI_KNSIG_BPW]) >> (signum % VKI_KNSIG_BPW))) |
| 111 | return 1; |
| 112 | else |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 117 | /* Add all signals in src to dst. */ |
| 118 | void VG_(ksigaddset_from_set)( vki_ksigset_t* dst, vki_ksigset_t* src ) |
| 119 | { |
| 120 | Int i; |
| 121 | vg_assert(dst != NULL && src != NULL); |
| 122 | for (i = 0; i < VKI_KNSIG_WORDS; i++) |
| 123 | dst->ws[i] |= src->ws[i]; |
| 124 | } |
| 125 | |
| 126 | /* Remove all signals in src from dst. */ |
| 127 | void VG_(ksigdelset_from_set)( vki_ksigset_t* dst, vki_ksigset_t* src ) |
| 128 | { |
| 129 | Int i; |
| 130 | vg_assert(dst != NULL && src != NULL); |
| 131 | for (i = 0; i < VKI_KNSIG_WORDS; i++) |
| 132 | dst->ws[i] &= ~(src->ws[i]); |
| 133 | } |
| 134 | |
| 135 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 136 | /* The functions sigaction, sigprocmask, sigpending and sigsuspend |
| 137 | return 0 on success and -1 on error. |
| 138 | */ |
| 139 | Int VG_(ksigprocmask)( Int how, |
| 140 | const vki_ksigset_t* set, |
| 141 | vki_ksigset_t* oldset) |
| 142 | { |
| 143 | Int res |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 144 | = VG_(do_syscall)(__NR_rt_sigprocmask, |
| 145 | how, (UInt)set, (UInt)oldset, |
| 146 | VKI_KNSIG_WORDS * VKI_BYTES_PER_WORD); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 147 | return VG_(is_kerror)(res) ? -1 : 0; |
| 148 | } |
| 149 | |
| 150 | |
| 151 | Int VG_(ksigaction) ( Int signum, |
| 152 | const vki_ksigaction* act, |
| 153 | vki_ksigaction* oldact) |
| 154 | { |
| 155 | Int res |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 156 | = VG_(do_syscall)(__NR_rt_sigaction, |
| 157 | signum, (UInt)act, (UInt)oldact, |
| 158 | VKI_KNSIG_WORDS * VKI_BYTES_PER_WORD); |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 159 | /* VG_(printf)("res = %d\n",res); */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 160 | return VG_(is_kerror)(res) ? -1 : 0; |
| 161 | } |
| 162 | |
| 163 | |
| 164 | Int VG_(ksigaltstack)( const vki_kstack_t* ss, vki_kstack_t* oss ) |
| 165 | { |
| 166 | Int res |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 167 | = VG_(do_syscall)(__NR_sigaltstack, (UInt)ss, (UInt)oss); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 168 | return VG_(is_kerror)(res) ? -1 : 0; |
| 169 | } |
| 170 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 171 | Int VG_(ksigtimedwait)( const vki_ksigset_t *set, vki_ksiginfo_t *info, |
| 172 | const struct vki_timespec *timeout ) |
| 173 | { |
| 174 | Int res = VG_(do_syscall)(__NR_rt_sigtimedwait, set, info, timeout, sizeof(*set)); |
| 175 | |
| 176 | return VG_(is_kerror)(res) ? -1 : res; |
| 177 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 178 | |
| 179 | Int VG_(ksignal)(Int signum, void (*sighandler)(Int)) |
| 180 | { |
| 181 | Int res; |
| 182 | vki_ksigaction sa; |
| 183 | sa.ksa_handler = sighandler; |
| 184 | sa.ksa_flags = VKI_SA_ONSTACK | VKI_SA_RESTART; |
| 185 | sa.ksa_restorer = NULL; |
| 186 | res = VG_(ksigemptyset)( &sa.ksa_mask ); |
| 187 | vg_assert(res == 0); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 188 | res = VG_(do_syscall)(__NR_rt_sigaction, |
| 189 | signum, (UInt)(&sa), (UInt)NULL, |
| 190 | VKI_KNSIG_WORDS * VKI_BYTES_PER_WORD); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 191 | return VG_(is_kerror)(res) ? -1 : 0; |
| 192 | } |
| 193 | |
| 194 | |
sewardj | dcaf312 | 2002-09-30 23:12:33 +0000 | [diff] [blame] | 195 | Int VG_(kkill)( Int pid, Int signo ) |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 196 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 197 | Int res = VG_(do_syscall)(__NR_kill, pid, signo); |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 198 | return VG_(is_kerror)(res) ? -1 : 0; |
| 199 | } |
| 200 | |
| 201 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 202 | Int VG_(ktkill)( Int tid, Int signo ) |
| 203 | { |
| 204 | Int ret = -VKI_ENOSYS; |
| 205 | |
| 206 | #ifdef __NR_tkill |
| 207 | ret = VG_(do_syscall)(__NR_tkill, tid, signo); |
| 208 | #endif /* __NR_tkill */ |
| 209 | |
| 210 | if (ret == -VKI_ENOSYS) |
| 211 | ret = VG_(do_syscall)(__NR_kill, tid, signo); |
| 212 | |
| 213 | return VG_(is_kerror)(ret) ? -1 : 0; |
| 214 | } |
| 215 | |
sewardj | dcaf312 | 2002-09-30 23:12:33 +0000 | [diff] [blame] | 216 | Int VG_(ksigpending) ( vki_ksigset_t* set ) |
sewardj | efbfcdf | 2002-06-19 17:35:45 +0000 | [diff] [blame] | 217 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 218 | Int res = VG_(do_syscall)(__NR_sigpending, (UInt)set); |
sewardj | efbfcdf | 2002-06-19 17:35:45 +0000 | [diff] [blame] | 219 | return VG_(is_kerror)(res) ? -1 : 0; |
| 220 | } |
| 221 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 222 | Int VG_(waitpid)(Int pid, Int *status, Int options) |
| 223 | { |
| 224 | Int ret = VG_(do_syscall)(__NR_wait4, pid, status, options, NULL); |
| 225 | |
| 226 | return VG_(is_kerror)(ret) ? -1 : ret; |
| 227 | } |
| 228 | |
| 229 | Int VG_(gettid)(void) |
| 230 | { |
| 231 | Int ret; |
| 232 | |
| 233 | ret = VG_(do_syscall)(__NR_gettid); |
| 234 | |
| 235 | if (ret == -VKI_ENOSYS) |
| 236 | ret = VG_(do_syscall)(__NR_getpid); |
| 237 | |
| 238 | return ret; |
| 239 | } |
| 240 | |
| 241 | |
sewardj | efbfcdf | 2002-06-19 17:35:45 +0000 | [diff] [blame] | 242 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 243 | /* --------------------------------------------------------------------- |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 244 | mmap/munmap, exit, fcntl |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 245 | ------------------------------------------------------------------ */ |
| 246 | |
| 247 | /* Returns -1 on failure. */ |
| 248 | void* VG_(mmap)( void* start, UInt length, |
| 249 | UInt prot, UInt flags, UInt fd, UInt offset) |
| 250 | { |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 251 | Addr res; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 252 | UInt args[6]; |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 253 | |
| 254 | if (!(flags & VKI_MAP_FIXED)) { |
| 255 | start = (void *)VG_(find_map_space)((Addr)start, length, !!(flags & VKI_MAP_CLIENT)); |
| 256 | if (start == 0) |
| 257 | return (void *)-1; |
| 258 | |
| 259 | flags |= VKI_MAP_FIXED; |
| 260 | } |
| 261 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 262 | args[0] = (UInt)start; |
| 263 | args[1] = length; |
| 264 | args[2] = prot; |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 265 | args[3] = flags & ~(VKI_MAP_NOSYMS|VKI_MAP_CLIENT); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 266 | args[4] = fd; |
| 267 | args[5] = offset; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 268 | res = VG_(do_syscall)(__NR_mmap, (UInt)(&(args[0])) ); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 269 | |
| 270 | if (!VG_(is_kerror)(res)) { |
| 271 | UInt sf_flags = SF_MMAP; |
| 272 | |
| 273 | if (flags & VKI_MAP_FIXED) |
| 274 | sf_flags |= SF_FIXED; |
| 275 | if (flags & VKI_MAP_SHARED) |
| 276 | sf_flags |= SF_SHARED; |
| 277 | if (!(flags & VKI_MAP_ANONYMOUS)) |
| 278 | sf_flags |= SF_FILE; |
| 279 | if (!(flags & VKI_MAP_CLIENT)) |
| 280 | sf_flags |= SF_VALGRIND; |
| 281 | if (flags & VKI_MAP_NOSYMS) |
| 282 | sf_flags |= SF_NOSYMS; |
| 283 | |
| 284 | /* placeholder - caller will update flags etc if they want */ |
| 285 | VG_(map_fd_segment)(res, length, prot, sf_flags, fd, offset, NULL); |
| 286 | |
| 287 | if (flags & VKI_MAP_CLIENT) { |
| 288 | if (res < VG_(client_base) || res >= VG_(client_end)) { |
| 289 | VG_(munmap)((void *)res, length); |
| 290 | res = -1; |
| 291 | } |
| 292 | } else { |
| 293 | if (res < VG_(valgrind_base) || res >= VG_(valgrind_end)) { |
| 294 | VG_(munmap)((void *)res, length); |
| 295 | res = -1; |
| 296 | } |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | |
| 301 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 302 | return VG_(is_kerror)(res) ? ((void*)(-1)) : (void*)res; |
| 303 | } |
| 304 | |
| 305 | /* Returns -1 on failure. */ |
| 306 | Int VG_(munmap)( void* start, Int length ) |
| 307 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 308 | Int res = VG_(do_syscall)(__NR_munmap, (UInt)start, (UInt)length ); |
fitzhardinge | 920d04e | 2003-12-20 18:19:50 +0000 | [diff] [blame] | 309 | if (!VG_(is_kerror)(res)) |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 310 | VG_(unmap_range)((Addr)start, length); |
| 311 | return VG_(is_kerror)(res) ? -1 : 0; |
| 312 | } |
| 313 | |
| 314 | Int VG_(mprotect)( void *start, Int length, UInt prot ) |
| 315 | { |
| 316 | Int res = VG_(do_syscall)(__NR_mprotect, (UInt)start, (UInt)length, prot ); |
| 317 | if (!VG_(is_kerror)(res)) |
| 318 | VG_(mprotect_range)((Addr)start, length, prot); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 319 | return VG_(is_kerror)(res) ? -1 : 0; |
| 320 | } |
| 321 | |
| 322 | void VG_(exit)( Int status ) |
| 323 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 324 | (void)VG_(do_syscall)(__NR_exit_group, (UInt)status ); |
| 325 | (void)VG_(do_syscall)(__NR_exit, (UInt)status ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 326 | /* Why are we still alive here? */ |
| 327 | /*NOTREACHED*/ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 328 | *(volatile Int *)0 = 'x'; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 329 | vg_assert(2+2 == 5); |
| 330 | } |
| 331 | |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 332 | /* Returns -1 on error. */ |
| 333 | Int VG_(fcntl) ( Int fd, Int cmd, Int arg ) |
| 334 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 335 | Int res = VG_(do_syscall)(__NR_fcntl, fd, cmd, arg); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 336 | return VG_(is_kerror)(res) ? -1 : res; |
| 337 | } |
| 338 | |
| 339 | /* Returns -1 on error. */ |
| 340 | Int VG_(select)( Int n, |
| 341 | vki_fd_set* readfds, |
| 342 | vki_fd_set* writefds, |
| 343 | vki_fd_set* exceptfds, |
| 344 | struct vki_timeval * timeout ) |
| 345 | { |
| 346 | Int res; |
| 347 | UInt args[5]; |
| 348 | args[0] = n; |
| 349 | args[1] = (UInt)readfds; |
| 350 | args[2] = (UInt)writefds; |
| 351 | args[3] = (UInt)exceptfds; |
| 352 | args[4] = (UInt)timeout; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 353 | res = VG_(do_syscall)(__NR_select, (UInt)(&(args[0])) ); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 354 | return VG_(is_kerror)(res) ? -1 : res; |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 355 | } |
| 356 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 357 | Int VG_(poll)( struct vki_pollfd *ufds, UInt nfds, Int timeout) |
| 358 | { |
| 359 | Int res = VG_(do_syscall)(__NR_poll, ufds, nfds, timeout); |
| 360 | |
| 361 | return res; |
| 362 | } |
| 363 | |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 364 | /* Returns -1 on error, 0 if ok, 1 if interrupted. */ |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 365 | Int VG_(nanosleep)( const struct vki_timespec *req, |
| 366 | struct vki_timespec *rem ) |
| 367 | { |
| 368 | Int res; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 369 | res = VG_(do_syscall)(__NR_nanosleep, (UInt)req, (UInt)rem); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 370 | if (res == -VKI_EINVAL) return -1; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 371 | if (res == -VKI_EINTR) return 1; |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 372 | return 0; |
| 373 | } |
| 374 | |
sewardj | b358620 | 2002-05-09 17:38:13 +0000 | [diff] [blame] | 375 | void* VG_(brk) ( void* end_data_segment ) |
| 376 | { |
| 377 | Int res; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 378 | res = VG_(do_syscall)(__NR_brk, (UInt)end_data_segment); |
sewardj | b358620 | 2002-05-09 17:38:13 +0000 | [diff] [blame] | 379 | return (void*)( VG_(is_kerror)(res) ? -1 : res ); |
| 380 | } |
| 381 | |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 382 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 383 | /* --------------------------------------------------------------------- |
| 384 | printf implementation. The key function, vg_vprintf(), emits chars |
| 385 | into a caller-supplied function. Distantly derived from: |
| 386 | |
| 387 | vprintf replacement for Checker. |
| 388 | Copyright 1993, 1994, 1995 Tristan Gingold |
| 389 | Written September 1993 Tristan Gingold |
| 390 | Tristan Gingold, 8 rue Parmentier, F-91120 PALAISEAU, FRANCE |
| 391 | |
| 392 | (Checker itself was GPL'd.) |
| 393 | ------------------------------------------------------------------ */ |
| 394 | |
| 395 | |
| 396 | /* Some flags. */ |
| 397 | #define VG_MSG_SIGNED 1 /* The value is signed. */ |
| 398 | #define VG_MSG_ZJUSTIFY 2 /* Must justify with '0'. */ |
| 399 | #define VG_MSG_LJUSTIFY 4 /* Must justify on the left. */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 400 | #define VG_MSG_PAREN 8 /* Parenthesize if present (for %y) */ |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 401 | #define VG_MSG_COMMA 16 /* Add commas to numbers (for %d, %u) */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 402 | |
| 403 | /* Copy a string into the buffer. */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 404 | static UInt |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 405 | myvprintf_str ( void(*send)(Char), Int flags, Int width, Char* str, |
| 406 | Bool capitalise ) |
| 407 | { |
| 408 | # define MAYBE_TOUPPER(ch) (capitalise ? VG_(toupper)(ch) : (ch)) |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 409 | UInt ret = 0; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 410 | Int i, extra; |
| 411 | Int len = VG_(strlen)(str); |
| 412 | |
| 413 | if (width == 0) { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 414 | ret += len; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 415 | for (i = 0; i < len; i++) |
| 416 | send(MAYBE_TOUPPER(str[i])); |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 417 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | if (len > width) { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 421 | ret += width; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 422 | for (i = 0; i < width; i++) |
| 423 | send(MAYBE_TOUPPER(str[i])); |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 424 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 425 | } |
| 426 | |
| 427 | extra = width - len; |
| 428 | if (flags & VG_MSG_LJUSTIFY) { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 429 | ret += extra; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 430 | for (i = 0; i < extra; i++) |
| 431 | send(' '); |
| 432 | } |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 433 | ret += len; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 434 | for (i = 0; i < len; i++) |
| 435 | send(MAYBE_TOUPPER(str[i])); |
| 436 | if (!(flags & VG_MSG_LJUSTIFY)) { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 437 | ret += extra; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 438 | for (i = 0; i < extra; i++) |
| 439 | send(' '); |
| 440 | } |
| 441 | |
| 442 | # undef MAYBE_TOUPPER |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 443 | |
| 444 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | /* Write P into the buffer according to these args: |
| 448 | * If SIGN is true, p is a signed. |
| 449 | * BASE is the base. |
| 450 | * If WITH_ZERO is true, '0' must be added. |
| 451 | * WIDTH is the width of the field. |
| 452 | */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 453 | static UInt |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 454 | myvprintf_int64 ( void(*send)(Char), Int flags, Int base, Int width, ULong p) |
| 455 | { |
| 456 | Char buf[40]; |
| 457 | Int ind = 0; |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 458 | Int i, nc = 0; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 459 | Bool neg = False; |
| 460 | Char *digits = "0123456789ABCDEF"; |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 461 | UInt ret = 0; |
| 462 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 463 | if (base < 2 || base > 16) |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 464 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 465 | |
| 466 | if ((flags & VG_MSG_SIGNED) && (Long)p < 0) { |
| 467 | p = - (Long)p; |
| 468 | neg = True; |
| 469 | } |
| 470 | |
| 471 | if (p == 0) |
| 472 | buf[ind++] = '0'; |
| 473 | else { |
| 474 | while (p > 0) { |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 475 | if (flags & VG_MSG_COMMA && 10 == base && |
| 476 | 0 == (ind-nc) % 3 && 0 != ind) |
| 477 | { |
| 478 | buf[ind++] = ','; |
| 479 | nc++; |
| 480 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 481 | buf[ind++] = digits[p % base]; |
| 482 | p /= base; |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 483 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | if (neg) |
| 487 | buf[ind++] = '-'; |
| 488 | |
| 489 | if (width > 0 && !(flags & VG_MSG_LJUSTIFY)) { |
| 490 | for(; ind < width; ind++) { |
| 491 | vg_assert(ind < 39); |
| 492 | buf[ind] = (flags & VG_MSG_ZJUSTIFY) ? '0': ' '; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | /* Reverse copy to buffer. */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 497 | ret += ind; |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 498 | for (i = ind -1; i >= 0; i--) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 499 | send(buf[i]); |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 500 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 501 | if (width > 0 && (flags & VG_MSG_LJUSTIFY)) { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 502 | for(; ind < width; ind++) { |
| 503 | ret++; |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 504 | send(' '); // Never pad with zeroes on RHS -- changes the value! |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 505 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 506 | } |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 507 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | |
| 511 | /* A simple vprintf(). */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 512 | UInt |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 513 | VG_(vprintf) ( void(*send)(Char), const Char *format, va_list vargs ) |
| 514 | { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 515 | UInt ret = 0; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 516 | int i; |
| 517 | int flags; |
| 518 | int width; |
| 519 | Bool is_long; |
| 520 | |
| 521 | /* We assume that vargs has already been initialised by the |
| 522 | caller, using va_start, and that the caller will similarly |
| 523 | clean up with va_end. |
| 524 | */ |
| 525 | |
| 526 | for (i = 0; format[i] != 0; i++) { |
| 527 | if (format[i] != '%') { |
| 528 | send(format[i]); |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 529 | ret++; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 530 | continue; |
| 531 | } |
| 532 | i++; |
| 533 | /* A '%' has been found. Ignore a trailing %. */ |
| 534 | if (format[i] == 0) |
| 535 | break; |
| 536 | if (format[i] == '%') { |
| 537 | /* `%%' is replaced by `%'. */ |
| 538 | send('%'); |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 539 | ret++; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 540 | continue; |
| 541 | } |
| 542 | flags = 0; |
| 543 | is_long = False; |
| 544 | width = 0; /* length of the field. */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 545 | if (format[i] == '(') { |
| 546 | flags |= VG_MSG_PAREN; |
| 547 | i++; |
| 548 | } |
njn | 607adfc | 2003-09-30 14:15:44 +0000 | [diff] [blame] | 549 | /* If ',' follows '%', commas will be inserted. */ |
| 550 | if (format[i] == ',') { |
| 551 | flags |= VG_MSG_COMMA; |
| 552 | i++; |
| 553 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 554 | /* If '-' follows '%', justify on the left. */ |
| 555 | if (format[i] == '-') { |
| 556 | flags |= VG_MSG_LJUSTIFY; |
| 557 | i++; |
| 558 | } |
| 559 | /* If '0' follows '%', pads will be inserted. */ |
| 560 | if (format[i] == '0') { |
| 561 | flags |= VG_MSG_ZJUSTIFY; |
| 562 | i++; |
| 563 | } |
| 564 | /* Compute the field length. */ |
| 565 | while (format[i] >= '0' && format[i] <= '9') { |
| 566 | width *= 10; |
| 567 | width += format[i++] - '0'; |
| 568 | } |
| 569 | while (format[i] == 'l') { |
| 570 | i++; |
| 571 | is_long = True; |
| 572 | } |
| 573 | |
| 574 | switch (format[i]) { |
| 575 | case 'd': /* %d */ |
| 576 | flags |= VG_MSG_SIGNED; |
| 577 | if (is_long) |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 578 | ret += myvprintf_int64(send, flags, 10, width, |
| 579 | (ULong)(va_arg (vargs, Long))); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 580 | else |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 581 | ret += myvprintf_int64(send, flags, 10, width, |
| 582 | (ULong)(va_arg (vargs, Int))); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 583 | break; |
| 584 | case 'u': /* %u */ |
| 585 | if (is_long) |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 586 | ret += myvprintf_int64(send, flags, 10, width, |
| 587 | (ULong)(va_arg (vargs, ULong))); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 588 | else |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 589 | ret += myvprintf_int64(send, flags, 10, width, |
| 590 | (ULong)(va_arg (vargs, UInt))); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 591 | break; |
| 592 | case 'p': /* %p */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 593 | ret += 2; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 594 | send('0'); |
| 595 | send('x'); |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 596 | ret += myvprintf_int64(send, flags, 16, width, |
| 597 | (ULong)((UInt)va_arg (vargs, void *))); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 598 | break; |
| 599 | case 'x': /* %x */ |
| 600 | if (is_long) |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 601 | ret += myvprintf_int64(send, flags, 16, width, |
| 602 | (ULong)(va_arg (vargs, ULong))); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 603 | else |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 604 | ret += myvprintf_int64(send, flags, 16, width, |
| 605 | (ULong)(va_arg (vargs, UInt))); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 606 | break; |
| 607 | case 'c': /* %c */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 608 | ret++; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 609 | send(va_arg (vargs, int)); |
| 610 | break; |
| 611 | case 's': case 'S': { /* %s */ |
| 612 | char *str = va_arg (vargs, char *); |
| 613 | if (str == (char*) 0) str = "(null)"; |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 614 | ret += myvprintf_str(send, flags, width, str, format[i]=='S'); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 615 | break; |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 616 | } |
| 617 | case 'y': { /* %y - print symbol */ |
| 618 | Char buf[100]; |
| 619 | Char *cp = buf; |
| 620 | Addr a = va_arg(vargs, Addr); |
| 621 | |
| 622 | if (flags & VG_MSG_PAREN) |
| 623 | *cp++ = '('; |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 624 | if (VG_(get_fnname_w_offset)(a, cp, sizeof(buf)-4)) { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 625 | if (flags & VG_MSG_PAREN) { |
| 626 | cp += VG_(strlen)(cp); |
| 627 | *cp++ = ')'; |
| 628 | *cp = '\0'; |
| 629 | } |
| 630 | ret += myvprintf_str(send, flags, width, buf, 0); |
| 631 | } |
| 632 | |
| 633 | break; |
| 634 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 635 | default: |
| 636 | break; |
| 637 | } |
| 638 | } |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 639 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 640 | } |
| 641 | |
| 642 | |
| 643 | /* A general replacement for printf(). Note that only low-level |
| 644 | debugging info should be sent via here. The official route is to |
| 645 | to use vg_message(). This interface is deprecated. |
| 646 | */ |
| 647 | static char myprintf_buf[100]; |
| 648 | static int n_myprintf_buf; |
| 649 | |
| 650 | static void add_to_myprintf_buf ( Char c ) |
| 651 | { |
| 652 | if (n_myprintf_buf >= 100-10 /*paranoia*/ ) { |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 653 | if (VG_(clo_logfile_fd) >= 0) { |
sewardj | 570f890 | 2002-11-03 11:44:36 +0000 | [diff] [blame] | 654 | VG_(send_bytes_to_logging_sink)( |
| 655 | myprintf_buf, VG_(strlen)(myprintf_buf) ); |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 656 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 657 | n_myprintf_buf = 0; |
| 658 | myprintf_buf[n_myprintf_buf] = 0; |
| 659 | } |
| 660 | myprintf_buf[n_myprintf_buf++] = c; |
| 661 | myprintf_buf[n_myprintf_buf] = 0; |
| 662 | } |
| 663 | |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 664 | UInt VG_(printf) ( const char *format, ... ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 665 | { |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 666 | UInt ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 667 | va_list vargs; |
| 668 | va_start(vargs,format); |
| 669 | |
| 670 | n_myprintf_buf = 0; |
| 671 | myprintf_buf[n_myprintf_buf] = 0; |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 672 | ret = VG_(vprintf) ( add_to_myprintf_buf, format, vargs ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 673 | |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 674 | if (n_myprintf_buf > 0 && VG_(clo_logfile_fd) >= 0) { |
sewardj | 570f890 | 2002-11-03 11:44:36 +0000 | [diff] [blame] | 675 | VG_(send_bytes_to_logging_sink)( myprintf_buf, n_myprintf_buf ); |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 676 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 677 | |
| 678 | va_end(vargs); |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 679 | |
| 680 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 681 | } |
| 682 | |
| 683 | |
| 684 | /* A general replacement for sprintf(). */ |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 685 | UInt VG_(sprintf) ( Char* buf, Char *format, ... ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 686 | { |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 687 | Int ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 688 | va_list vargs; |
sewardj | 1771e17 | 2002-11-13 22:06:35 +0000 | [diff] [blame] | 689 | Char *ptr = buf; |
| 690 | static void add_to_vg_sprintf_buf ( Char c ) |
| 691 | { |
| 692 | *ptr++ = c; |
| 693 | } |
| 694 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 695 | va_start(vargs,format); |
| 696 | |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 697 | ret = VG_(vprintf) ( add_to_vg_sprintf_buf, format, vargs ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 698 | add_to_vg_sprintf_buf(0); |
| 699 | |
| 700 | va_end(vargs); |
sewardj | 78e3cd9 | 2002-10-22 04:45:48 +0000 | [diff] [blame] | 701 | |
| 702 | vg_assert(VG_(strlen)(buf) == ret); |
| 703 | return ret; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | |
| 707 | /* --------------------------------------------------------------------- |
| 708 | Misc str* functions. |
| 709 | ------------------------------------------------------------------ */ |
| 710 | |
| 711 | Bool VG_(isspace) ( Char c ) |
| 712 | { |
| 713 | return (c == ' ' || c == '\n' || c == '\t' || c == 0); |
| 714 | } |
| 715 | |
njn | 7cf0bd3 | 2002-06-08 13:36:03 +0000 | [diff] [blame] | 716 | Bool VG_(isdigit) ( Char c ) |
| 717 | { |
| 718 | return (c >= '0' && c <= '9'); |
| 719 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 720 | |
| 721 | Int VG_(strlen) ( const Char* str ) |
| 722 | { |
| 723 | Int i = 0; |
| 724 | while (str[i] != 0) i++; |
| 725 | return i; |
| 726 | } |
| 727 | |
| 728 | |
| 729 | Long VG_(atoll) ( Char* str ) |
| 730 | { |
| 731 | Bool neg = False; |
| 732 | Long n = 0; |
| 733 | if (*str == '-') { str++; neg = True; }; |
| 734 | while (*str >= '0' && *str <= '9') { |
| 735 | n = 10*n + (Long)(*str - '0'); |
| 736 | str++; |
| 737 | } |
| 738 | if (neg) n = -n; |
| 739 | return n; |
| 740 | } |
| 741 | |
| 742 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 743 | Long VG_(atoll16) ( Char* str ) |
sewardj | a70ca3f | 2002-05-30 01:22:20 +0000 | [diff] [blame] | 744 | { |
| 745 | Bool neg = False; |
| 746 | Long n = 0; |
| 747 | if (*str == '-') { str++; neg = True; }; |
| 748 | while (True) { |
| 749 | if (*str >= '0' && *str <= '9') { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 750 | n = 16*n + (Long)(*str - '0'); |
sewardj | a70ca3f | 2002-05-30 01:22:20 +0000 | [diff] [blame] | 751 | } |
| 752 | else |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 753 | if (*str >= 'A' && *str <= 'F') { |
| 754 | n = 16*n + (Long)((*str - 'A') + 10); |
sewardj | a70ca3f | 2002-05-30 01:22:20 +0000 | [diff] [blame] | 755 | } |
| 756 | else |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 757 | if (*str >= 'a' && *str <= 'f') { |
| 758 | n = 16*n + (Long)((*str - 'a') + 10); |
| 759 | } |
| 760 | else { |
| 761 | break; |
| 762 | } |
| 763 | str++; |
| 764 | } |
| 765 | if (neg) n = -n; |
| 766 | return n; |
| 767 | } |
| 768 | |
| 769 | Long VG_(atoll36) ( UInt base, Char* str ) |
| 770 | { |
| 771 | Bool neg = False; |
| 772 | Long n = 0; |
| 773 | vg_assert(base >= 2 && base <= 36); |
| 774 | if (*str == '-') { str++; neg = True; }; |
| 775 | while (True) { |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 776 | if (*str >= '0' |
| 777 | && *str <= (Char)('9' - (10 - base))) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 778 | n = base*n + (Long)(*str - '0'); |
| 779 | } |
| 780 | else |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 781 | if (base > 10 && *str >= 'A' |
| 782 | && *str <= (Char)('Z' - (36 - base))) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 783 | n = base*n + (Long)((*str - 'A') + 10); |
| 784 | } |
| 785 | else |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 786 | if (base > 10 && *str >= 'a' |
| 787 | && *str <= (Char)('z' - (36 - base))) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 788 | n = base*n + (Long)((*str - 'a') + 10); |
sewardj | a70ca3f | 2002-05-30 01:22:20 +0000 | [diff] [blame] | 789 | } |
| 790 | else { |
| 791 | break; |
| 792 | } |
| 793 | str++; |
| 794 | } |
| 795 | if (neg) n = -n; |
| 796 | return n; |
| 797 | } |
| 798 | |
| 799 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 800 | Char* VG_(strcat) ( Char* dest, const Char* src ) |
| 801 | { |
| 802 | Char* dest_orig = dest; |
| 803 | while (*dest) dest++; |
| 804 | while (*src) *dest++ = *src++; |
| 805 | *dest = 0; |
| 806 | return dest_orig; |
| 807 | } |
| 808 | |
| 809 | |
| 810 | Char* VG_(strncat) ( Char* dest, const Char* src, Int n ) |
| 811 | { |
| 812 | Char* dest_orig = dest; |
| 813 | while (*dest) dest++; |
| 814 | while (*src && n > 0) { *dest++ = *src++; n--; } |
| 815 | *dest = 0; |
| 816 | return dest_orig; |
| 817 | } |
| 818 | |
| 819 | |
| 820 | Char* VG_(strpbrk) ( const Char* s, const Char* accept ) |
| 821 | { |
| 822 | const Char* a; |
| 823 | while (*s) { |
| 824 | a = accept; |
| 825 | while (*a) |
| 826 | if (*a++ == *s) |
| 827 | return (Char *) s; |
| 828 | s++; |
| 829 | } |
| 830 | return NULL; |
| 831 | } |
| 832 | |
| 833 | |
| 834 | Char* VG_(strcpy) ( Char* dest, const Char* src ) |
| 835 | { |
| 836 | Char* dest_orig = dest; |
| 837 | while (*src) *dest++ = *src++; |
| 838 | *dest = 0; |
| 839 | return dest_orig; |
| 840 | } |
| 841 | |
| 842 | |
| 843 | /* Copy bytes, not overrunning the end of dest and always ensuring |
| 844 | zero termination. */ |
| 845 | void VG_(strncpy_safely) ( Char* dest, const Char* src, Int ndest ) |
| 846 | { |
| 847 | Int i; |
| 848 | vg_assert(ndest > 0); |
| 849 | i = 0; |
| 850 | dest[i] = 0; |
| 851 | while (True) { |
| 852 | if (src[i] == 0) return; |
| 853 | if (i >= ndest-1) return; |
| 854 | dest[i] = src[i]; |
| 855 | i++; |
| 856 | dest[i] = 0; |
| 857 | } |
| 858 | } |
| 859 | |
| 860 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 861 | Char* VG_(strncpy) ( Char* dest, const Char* src, Int ndest ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 862 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 863 | Int i = 0; |
| 864 | while (True) { |
| 865 | if (i >= ndest) return dest; /* reached limit */ |
| 866 | dest[i] = src[i]; |
| 867 | if (src[i++] == 0) { |
| 868 | /* reached NUL; pad rest with zeroes as required */ |
| 869 | while (i < ndest) dest[i++] = 0; |
| 870 | return dest; |
| 871 | } |
| 872 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 873 | } |
| 874 | |
| 875 | |
| 876 | Int VG_(strcmp) ( const Char* s1, const Char* s2 ) |
| 877 | { |
| 878 | while (True) { |
| 879 | if (*s1 == 0 && *s2 == 0) return 0; |
| 880 | if (*s1 == 0) return -1; |
| 881 | if (*s2 == 0) return 1; |
| 882 | |
| 883 | if (*(UChar*)s1 < *(UChar*)s2) return -1; |
| 884 | if (*(UChar*)s1 > *(UChar*)s2) return 1; |
| 885 | |
| 886 | s1++; s2++; |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | |
| 891 | Int VG_(strcmp_ws) ( const Char* s1, const Char* s2 ) |
| 892 | { |
| 893 | while (True) { |
| 894 | if (VG_(isspace)(*s1) && VG_(isspace)(*s2)) return 0; |
| 895 | if (VG_(isspace)(*s1)) return -1; |
| 896 | if (VG_(isspace)(*s2)) return 1; |
| 897 | |
| 898 | if (*(UChar*)s1 < *(UChar*)s2) return -1; |
| 899 | if (*(UChar*)s1 > *(UChar*)s2) return 1; |
| 900 | |
| 901 | s1++; s2++; |
| 902 | } |
| 903 | } |
| 904 | |
| 905 | |
| 906 | Int VG_(strncmp) ( const Char* s1, const Char* s2, Int nmax ) |
| 907 | { |
| 908 | Int n = 0; |
| 909 | while (True) { |
| 910 | if (n >= nmax) return 0; |
| 911 | if (*s1 == 0 && *s2 == 0) return 0; |
| 912 | if (*s1 == 0) return -1; |
| 913 | if (*s2 == 0) return 1; |
| 914 | |
| 915 | if (*(UChar*)s1 < *(UChar*)s2) return -1; |
| 916 | if (*(UChar*)s1 > *(UChar*)s2) return 1; |
| 917 | |
| 918 | s1++; s2++; n++; |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | |
| 923 | Int VG_(strncmp_ws) ( const Char* s1, const Char* s2, Int nmax ) |
| 924 | { |
| 925 | Int n = 0; |
| 926 | while (True) { |
| 927 | if (n >= nmax) return 0; |
| 928 | if (VG_(isspace)(*s1) && VG_(isspace)(*s2)) return 0; |
| 929 | if (VG_(isspace)(*s1)) return -1; |
| 930 | if (VG_(isspace)(*s2)) return 1; |
| 931 | |
| 932 | if (*(UChar*)s1 < *(UChar*)s2) return -1; |
| 933 | if (*(UChar*)s1 > *(UChar*)s2) return 1; |
| 934 | |
| 935 | s1++; s2++; n++; |
| 936 | } |
| 937 | } |
| 938 | |
| 939 | |
| 940 | Char* VG_(strstr) ( const Char* haystack, Char* needle ) |
| 941 | { |
sewardj | 3984b85 | 2002-05-12 03:00:17 +0000 | [diff] [blame] | 942 | Int n; |
| 943 | if (haystack == NULL) |
| 944 | return NULL; |
| 945 | n = VG_(strlen)(needle); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 946 | while (True) { |
| 947 | if (haystack[0] == 0) |
| 948 | return NULL; |
| 949 | if (VG_(strncmp)(haystack, needle, n) == 0) |
| 950 | return (Char*)haystack; |
| 951 | haystack++; |
| 952 | } |
| 953 | } |
| 954 | |
| 955 | |
| 956 | Char* VG_(strchr) ( const Char* s, Char c ) |
| 957 | { |
| 958 | while (True) { |
| 959 | if (*s == c) return (Char*)s; |
| 960 | if (*s == 0) return NULL; |
| 961 | s++; |
| 962 | } |
| 963 | } |
| 964 | |
| 965 | |
sewardj | 7ab2aca | 2002-10-20 19:40:32 +0000 | [diff] [blame] | 966 | void* VG_(memcpy) ( void *dest, const void *src, Int sz ) |
| 967 | { |
| 968 | const Char *s = (const Char *)src; |
| 969 | Char *d = (Char *)dest; |
| 970 | vg_assert(sz >= 0); |
| 971 | |
| 972 | while (sz--) |
| 973 | *d++ = *s++; |
| 974 | |
| 975 | return dest; |
| 976 | } |
| 977 | |
| 978 | |
| 979 | void* VG_(memset) ( void *dest, Int c, Int sz ) |
| 980 | { |
| 981 | Char *d = (Char *)dest; |
| 982 | vg_assert(sz >= 0); |
| 983 | |
| 984 | while (sz--) |
| 985 | *d++ = c; |
| 986 | |
| 987 | return dest; |
| 988 | } |
| 989 | |
njn | 6d68e79 | 2003-02-24 10:49:08 +0000 | [diff] [blame] | 990 | Int VG_(memcmp) ( const void* s1, const void* s2, Int n ) |
| 991 | { |
| 992 | Int res; |
njn | fa4690b | 2003-02-24 21:43:05 +0000 | [diff] [blame] | 993 | UChar a0; |
| 994 | UChar b0; |
njn | 6d68e79 | 2003-02-24 10:49:08 +0000 | [diff] [blame] | 995 | vg_assert(n >= 0); |
| 996 | |
| 997 | while (n != 0) { |
njn | fa4690b | 2003-02-24 21:43:05 +0000 | [diff] [blame] | 998 | a0 = ((UChar *) s1)[0]; |
| 999 | b0 = ((UChar *) s2)[0]; |
njn | 6d68e79 | 2003-02-24 10:49:08 +0000 | [diff] [blame] | 1000 | s1 += 1; |
| 1001 | s2 += 1; |
| 1002 | res = a0 - b0; |
| 1003 | if (res != 0) |
| 1004 | return res; |
| 1005 | n -= 1; |
| 1006 | } |
| 1007 | return 0; |
| 1008 | } |
sewardj | 7ab2aca | 2002-10-20 19:40:32 +0000 | [diff] [blame] | 1009 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1010 | Char VG_(toupper) ( Char c ) |
| 1011 | { |
| 1012 | if (c >= 'a' && c <= 'z') |
| 1013 | return c + ('A' - 'a'); |
| 1014 | else |
| 1015 | return c; |
| 1016 | } |
| 1017 | |
| 1018 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1019 | /* Inline just for the wrapper VG_(strdup) below */ |
| 1020 | __inline__ Char* VG_(arena_strdup) ( ArenaId aid, const Char* s ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1021 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1022 | Int i; |
fitzhardinge | a772847 | 2003-12-16 01:48:38 +0000 | [diff] [blame] | 1023 | Int len; |
| 1024 | Char* res; |
| 1025 | |
| 1026 | if (s == NULL) |
| 1027 | return NULL; |
| 1028 | |
| 1029 | len = VG_(strlen)(s) + 1; |
| 1030 | res = VG_(arena_malloc) (aid, len); |
| 1031 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1032 | for (i = 0; i < len; i++) |
| 1033 | res[i] = s[i]; |
| 1034 | return res; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1035 | } |
| 1036 | |
nethercote | 7cc9c23 | 2004-01-21 15:08:04 +0000 | [diff] [blame] | 1037 | /* Wrapper to avoid exposing tools to ArenaId's */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1038 | Char* VG_(strdup) ( const Char* s ) |
| 1039 | { |
nethercote | 60f5b82 | 2004-01-26 17:24:42 +0000 | [diff] [blame] | 1040 | return VG_(arena_strdup) ( VG_AR_TOOL, s ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1041 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1042 | |
| 1043 | /* --------------------------------------------------------------------- |
| 1044 | A simple string matching routine, purloined from Hugs98. |
| 1045 | `*' matches any sequence of zero or more characters |
| 1046 | `?' matches any single character exactly |
| 1047 | `\c' matches the character c only (ignoring special chars) |
| 1048 | c matches the character c only |
| 1049 | ------------------------------------------------------------------ */ |
| 1050 | |
| 1051 | /* Keep track of recursion depth. */ |
| 1052 | static Int recDepth; |
| 1053 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1054 | static Bool string_match_wrk ( const Char* pat, const Char* str ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1055 | { |
sewardj | e54b69d | 2003-07-06 01:14:42 +0000 | [diff] [blame] | 1056 | vg_assert(recDepth >= 0 && recDepth < 500); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1057 | recDepth++; |
| 1058 | for (;;) { |
| 1059 | switch (*pat) { |
| 1060 | case '\0' : return (*str=='\0'); |
| 1061 | case '*' : do { |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 1062 | if (string_match_wrk(pat+1,str)) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1063 | recDepth--; |
| 1064 | return True; |
| 1065 | } |
| 1066 | } while (*str++); |
| 1067 | recDepth--; |
| 1068 | return False; |
| 1069 | case '?' : if (*str++=='\0') { |
| 1070 | recDepth--; |
| 1071 | return False; |
| 1072 | } |
| 1073 | pat++; |
| 1074 | break; |
| 1075 | case '\\' : if (*++pat == '\0') { |
| 1076 | recDepth--; |
| 1077 | return False; /* spurious trailing \ in pattern */ |
| 1078 | } |
| 1079 | /* falls through to ... */ |
| 1080 | default : if (*pat++ != *str++) { |
| 1081 | recDepth--; |
| 1082 | return False; |
| 1083 | } |
| 1084 | break; |
| 1085 | } |
| 1086 | } |
| 1087 | } |
| 1088 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1089 | Bool VG_(string_match) ( const Char* pat, const Char* str ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1090 | { |
| 1091 | Bool b; |
| 1092 | recDepth = 0; |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 1093 | b = string_match_wrk ( pat, str ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1094 | /* |
| 1095 | VG_(printf)("%s %s %s\n", |
| 1096 | b?"TRUE ":"FALSE", pat, str); |
| 1097 | */ |
| 1098 | return b; |
| 1099 | } |
| 1100 | |
| 1101 | |
| 1102 | /* --------------------------------------------------------------------- |
| 1103 | Assertery. |
| 1104 | ------------------------------------------------------------------ */ |
| 1105 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1106 | /* Fake up an ExeContext which is of our actual real CPU state, so we |
| 1107 | can print a stack trace. This isn't terribly useful in the case |
| 1108 | where we were killed by a signal, since we just get a backtrace |
| 1109 | into the signal handler. Also, it could be somewhat risky if we |
| 1110 | actully got the panic/exception within the execontext/stack |
| 1111 | dump/symtab code. But it's better than nothing. */ |
| 1112 | static inline ExeContext *get_real_execontext(Addr ret) |
| 1113 | { |
| 1114 | ExeContext *ec; |
fitzhardinge | a09a1b5 | 2003-11-07 23:09:48 +0000 | [diff] [blame] | 1115 | Addr esp, ebp; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1116 | Addr stacktop; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1117 | |
fitzhardinge | a09a1b5 | 2003-11-07 23:09:48 +0000 | [diff] [blame] | 1118 | asm("movl %%ebp, %0; movl %%esp, %1" : "=r" (ebp), "=r" (esp)); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1119 | stacktop = VG_(valgrind_end); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1120 | if (esp >= (Addr)&VG_(sigstack)[0] && esp < (Addr)&VG_(sigstack)[VG_STACK_SIZE_W]) |
| 1121 | stacktop = (Addr)&VG_(sigstack)[VG_STACK_SIZE_W]; |
| 1122 | |
| 1123 | ec = VG_(get_ExeContext2)(ret, ebp, esp, stacktop); |
| 1124 | |
| 1125 | return ec; |
| 1126 | } |
| 1127 | |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1128 | __attribute__ ((noreturn)) |
daywalker | 3222e0a | 2003-09-18 01:39:50 +0000 | [diff] [blame] | 1129 | static void report_and_quit ( const Char* report ) |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1130 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1131 | ExeContext *ec = get_real_execontext((Addr)__builtin_return_address(0)); |
| 1132 | VG_(pp_ExeContext)(ec); |
| 1133 | |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1134 | VG_(pp_sched_status)(); |
sewardj | 366ee1e | 2003-04-26 22:36:42 +0000 | [diff] [blame] | 1135 | VG_(printf)("\n"); |
| 1136 | VG_(printf)("Note: see also the FAQ.txt in the source distribution.\n"); |
| 1137 | VG_(printf)("It contains workarounds to several common problems.\n"); |
| 1138 | VG_(printf)("\n"); |
| 1139 | VG_(printf)("If that doesn't help, please report this bug to: %s\n\n", |
| 1140 | report); |
| 1141 | VG_(printf)("In the bug report, send all the above text, the valgrind\n"); |
sewardj | 96330bd | 2003-04-27 23:46:21 +0000 | [diff] [blame] | 1142 | VG_(printf)("version, and what Linux distro you are using. Thanks.\n\n"); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1143 | VG_(shutdown_logging)(); |
| 1144 | VG_(exit)(1); |
| 1145 | } |
| 1146 | |
| 1147 | __attribute__ ((noreturn)) |
daywalker | 3222e0a | 2003-09-18 01:39:50 +0000 | [diff] [blame] | 1148 | static void assert_fail ( const Char* expr, const Char* name, const Char* report, |
| 1149 | const Char* file, Int line, const Char* fn ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1150 | { |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 1151 | static Bool entered = False; |
| 1152 | if (entered) |
| 1153 | VG_(exit)(2); |
| 1154 | entered = True; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1155 | VG_(printf)("\n%s: %s:%d (%s): Assertion `%s' failed.\n", |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1156 | name, file, line, fn, expr ); |
| 1157 | report_and_quit(report); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1158 | } |
| 1159 | |
daywalker | 3222e0a | 2003-09-18 01:39:50 +0000 | [diff] [blame] | 1160 | void VG_(skin_assert_fail) ( const Char* expr, const Char* file, Int line, const Char* fn ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1161 | { |
njn | d04b7c6 | 2002-10-03 14:05:52 +0000 | [diff] [blame] | 1162 | assert_fail(expr, VG_(details).name, VG_(details).bug_reports_to, |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1163 | file, line, fn); |
| 1164 | } |
| 1165 | |
daywalker | 3222e0a | 2003-09-18 01:39:50 +0000 | [diff] [blame] | 1166 | void VG_(core_assert_fail) ( const Char* expr, const Char* file, Int line, const Char* fn ) |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1167 | { |
nethercote | 421281e | 2003-11-20 16:20:55 +0000 | [diff] [blame] | 1168 | assert_fail(expr, "valgrind", VG_BUGS_TO, file, line, fn); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1169 | } |
| 1170 | |
| 1171 | __attribute__ ((noreturn)) |
| 1172 | static void panic ( Char* name, Char* report, Char* str ) |
| 1173 | { |
| 1174 | VG_(printf)("\n%s: the `impossible' happened:\n %s\n", name, str); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1175 | VG_(printf)("Basic block ctr is approximately %llu\n", VG_(bbs_done) ); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1176 | report_and_quit(report); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1177 | } |
| 1178 | |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1179 | void VG_(core_panic) ( Char* str ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1180 | { |
nethercote | 421281e | 2003-11-20 16:20:55 +0000 | [diff] [blame] | 1181 | panic("valgrind", VG_BUGS_TO, str); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1182 | } |
| 1183 | |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1184 | void VG_(skin_panic) ( Char* str ) |
| 1185 | { |
njn | d04b7c6 | 2002-10-03 14:05:52 +0000 | [diff] [blame] | 1186 | panic(VG_(details).name, VG_(details).bug_reports_to, str); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1187 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1188 | |
njn | 13f0293 | 2003-04-30 20:23:58 +0000 | [diff] [blame] | 1189 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1190 | /* --------------------------------------------------------------------- |
| 1191 | Primitive support for reading files. |
| 1192 | ------------------------------------------------------------------ */ |
| 1193 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1194 | static inline Bool fd_exists(Int fd) |
| 1195 | { |
| 1196 | struct vki_stat st; |
| 1197 | |
| 1198 | return VG_(fstat)(fd, &st) == 0; |
| 1199 | } |
| 1200 | |
| 1201 | /* Move an fd into the Valgrind-safe range */ |
| 1202 | Int VG_(safe_fd)(Int oldfd) |
| 1203 | { |
| 1204 | Int newfd; |
| 1205 | |
fitzhardinge | b791a19 | 2003-12-18 07:22:44 +0000 | [diff] [blame] | 1206 | vg_assert(VG_(max_fd) != -1); |
| 1207 | |
fitzhardinge | f0046f2 | 2003-12-18 02:39:22 +0000 | [diff] [blame] | 1208 | newfd = VG_(fcntl)(oldfd, VKI_F_DUPFD, VG_(max_fd)+1); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1209 | if (newfd != -1) |
| 1210 | VG_(close)(oldfd); |
| 1211 | |
| 1212 | VG_(fcntl)(newfd, VKI_F_SETFD, VKI_FD_CLOEXEC); |
| 1213 | |
fitzhardinge | f0046f2 | 2003-12-18 02:39:22 +0000 | [diff] [blame] | 1214 | vg_assert(newfd > VG_(max_fd)); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1215 | return newfd; |
| 1216 | } |
| 1217 | |
| 1218 | |
| 1219 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1220 | /* Returns -1 on failure. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1221 | Int VG_(open) ( const Char* pathname, Int flags, Int mode ) |
| 1222 | { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1223 | Int fd; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1224 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1225 | /* (old comment, not sure if it still applies NJN 2002-sep-09) */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1226 | /* This gets a segmentation fault if pathname isn't a valid file. |
| 1227 | I don't know why. It seems like the call to open is getting |
| 1228 | intercepted and messed with by glibc ... */ |
| 1229 | /* fd = open( pathname, O_RDONLY ); */ |
| 1230 | /* ... so we go direct to the horse's mouth, which seems to work |
| 1231 | ok: */ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1232 | fd = VG_(do_syscall)(__NR_open, (UInt)pathname, flags, mode); |
njn | 4f9c934 | 2002-04-29 16:03:24 +0000 | [diff] [blame] | 1233 | /* VG_(printf)("result = %d\n", fd); */ |
jsgf | f3c3f1a | 2003-10-14 22:13:28 +0000 | [diff] [blame] | 1234 | /* return -ve error code */ |
njn | 4f9c934 | 2002-04-29 16:03:24 +0000 | [diff] [blame] | 1235 | return fd; |
| 1236 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1237 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1238 | Int VG_(pipe) ( Int fd[2] ) |
| 1239 | { |
| 1240 | Int ret = VG_(do_syscall)(__NR_pipe, fd); |
| 1241 | return VG_(is_kerror)(ret) ? -1 : 0; |
| 1242 | } |
| 1243 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1244 | void VG_(close) ( Int fd ) |
| 1245 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1246 | VG_(do_syscall)(__NR_close, fd); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1247 | } |
| 1248 | |
| 1249 | |
| 1250 | Int VG_(read) ( Int fd, void* buf, Int count) |
| 1251 | { |
| 1252 | Int res; |
| 1253 | /* res = read( fd, buf, count ); */ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1254 | res = VG_(do_syscall)(__NR_read, fd, (UInt)buf, count); |
| 1255 | /* return -ERRNO on error */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1256 | return res; |
| 1257 | } |
| 1258 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1259 | Int VG_(write) ( Int fd, const void* buf, Int count) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1260 | { |
| 1261 | Int res; |
| 1262 | /* res = write( fd, buf, count ); */ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1263 | res = VG_(do_syscall)(__NR_write, fd, (UInt)buf, count); |
| 1264 | /* return -ERRNO on error */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1265 | return res; |
| 1266 | } |
| 1267 | |
rjwalsh | f5f536f | 2003-11-17 17:45:00 +0000 | [diff] [blame] | 1268 | Int VG_(lseek) ( Int fd, Long offset, Int whence) |
| 1269 | { |
| 1270 | Int res; |
| 1271 | /* res = lseek( fd, offset, whence ); */ |
| 1272 | res = VG_(do_syscall)(__NR_lseek, fd, (UInt)offset, whence); |
| 1273 | if (VG_(is_kerror)(res)) res = -1; |
| 1274 | return res; |
| 1275 | } |
| 1276 | |
sewardj | b358620 | 2002-05-09 17:38:13 +0000 | [diff] [blame] | 1277 | Int VG_(stat) ( Char* file_name, struct vki_stat* buf ) |
| 1278 | { |
| 1279 | Int res; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1280 | res = VG_(do_syscall)(__NR_stat, (UInt)file_name, (UInt)buf); |
fitzhardinge | e1c06d8 | 2003-10-30 07:21:44 +0000 | [diff] [blame] | 1281 | return res; /* return -ve error */ |
njn | 4155712 | 2002-10-14 09:25:37 +0000 | [diff] [blame] | 1282 | } |
| 1283 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1284 | Int VG_(fstat) ( Int fd, struct vki_stat* buf ) |
| 1285 | { |
| 1286 | Int res; |
| 1287 | res = VG_(do_syscall)(__NR_fstat, (UInt)fd, (UInt)buf); |
| 1288 | return VG_(is_kerror)(res) ? (-1) : 0; |
| 1289 | } |
| 1290 | |
| 1291 | Int VG_(dup2) ( Int oldfd, Int newfd ) |
| 1292 | { |
| 1293 | Int res; |
| 1294 | res = VG_(do_syscall)(__NR_dup2, (UInt)oldfd, (UInt)newfd); |
| 1295 | return VG_(is_kerror)(res) ? (-1) : res; |
| 1296 | } |
| 1297 | |
njn | 4155712 | 2002-10-14 09:25:37 +0000 | [diff] [blame] | 1298 | Int VG_(rename) ( Char* old_name, Char* new_name ) |
| 1299 | { |
| 1300 | Int res; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1301 | res = VG_(do_syscall)(__NR_rename, (UInt)old_name, (UInt)new_name); |
njn | 4155712 | 2002-10-14 09:25:37 +0000 | [diff] [blame] | 1302 | return VG_(is_kerror)(res) ? (-1) : 0; |
sewardj | b358620 | 2002-05-09 17:38:13 +0000 | [diff] [blame] | 1303 | } |
| 1304 | |
njn | 4aca2d2 | 2002-10-04 10:29:38 +0000 | [diff] [blame] | 1305 | Int VG_(unlink) ( Char* file_name ) |
| 1306 | { |
| 1307 | Int res; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1308 | res = VG_(do_syscall)(__NR_unlink, (UInt)file_name); |
njn | 4155712 | 2002-10-14 09:25:37 +0000 | [diff] [blame] | 1309 | return VG_(is_kerror)(res) ? (-1) : 0; |
njn | 4aca2d2 | 2002-10-04 10:29:38 +0000 | [diff] [blame] | 1310 | } |
| 1311 | |
njn | 13f0293 | 2003-04-30 20:23:58 +0000 | [diff] [blame] | 1312 | /* Nb: we do not allow the Linux extension which malloc()s memory for the |
| 1313 | buffer if buf==NULL, because we don't want Linux calling malloc() */ |
| 1314 | Char* VG_(getcwd) ( Char* buf, Int size ) |
| 1315 | { |
| 1316 | Int res; |
| 1317 | vg_assert(buf != NULL); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1318 | res = VG_(do_syscall)(__NR_getcwd, (UInt)buf, (UInt)size); |
njn | 13f0293 | 2003-04-30 20:23:58 +0000 | [diff] [blame] | 1319 | return VG_(is_kerror)(res) ? ((Char*)NULL) : (Char*)res; |
| 1320 | } |
| 1321 | |
njn | 99ccf08 | 2003-09-30 13:51:23 +0000 | [diff] [blame] | 1322 | /* Alternative version that does allocate the memory. Easier to use. */ |
| 1323 | Bool VG_(getcwd_alloc) ( Char** out ) |
| 1324 | { |
| 1325 | UInt size = 4; |
| 1326 | |
| 1327 | *out = NULL; |
| 1328 | while (True) { |
| 1329 | *out = VG_(malloc)(size); |
| 1330 | if (NULL == VG_(getcwd)(*out, size)) { |
| 1331 | VG_(free)(*out); |
| 1332 | if (size > 65535) |
| 1333 | return False; |
| 1334 | size *= 2; |
| 1335 | } else { |
| 1336 | return True; |
| 1337 | } |
| 1338 | } |
| 1339 | } |
| 1340 | |
njn | 13f0293 | 2003-04-30 20:23:58 +0000 | [diff] [blame] | 1341 | |
| 1342 | /* --------------------------------------------------------------------- |
| 1343 | Misc functions looking for a proper home. |
| 1344 | ------------------------------------------------------------------ */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1345 | |
nethercote | ff9721d | 2004-01-26 17:10:01 +0000 | [diff] [blame] | 1346 | /* clone the environment */ |
| 1347 | Char **VG_(env_clone) ( Char **oldenv ) |
| 1348 | { |
| 1349 | Char **oldenvp; |
| 1350 | Char **newenvp; |
| 1351 | Char **newenv; |
| 1352 | Int envlen; |
| 1353 | |
| 1354 | for (oldenvp = oldenv; oldenvp && *oldenvp; oldenvp++); |
| 1355 | |
| 1356 | envlen = oldenvp - oldenv + 1; |
| 1357 | |
| 1358 | newenv = VG_(arena_malloc)(VG_AR_CORE, envlen * sizeof(Char **)); |
| 1359 | |
| 1360 | oldenvp = oldenv; |
| 1361 | newenvp = newenv; |
| 1362 | |
| 1363 | while (oldenvp && *oldenvp) { |
| 1364 | *newenvp++ = *oldenvp++; |
| 1365 | } |
| 1366 | |
| 1367 | *newenvp = *oldenvp; |
| 1368 | |
| 1369 | return newenv; |
| 1370 | } |
| 1371 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1372 | void VG_(env_unsetenv) ( Char **env, const Char *varname ) |
| 1373 | { |
| 1374 | Char **from; |
| 1375 | Char **to = NULL; |
| 1376 | Int len = VG_(strlen)(varname); |
| 1377 | |
| 1378 | for(from = to = env; from && *from; from++) { |
| 1379 | if (!(VG_(strncmp)(varname, *from, len) == 0 && (*from)[len] == '=')) { |
| 1380 | *to = *from; |
| 1381 | to++; |
| 1382 | } |
| 1383 | } |
| 1384 | *to = *from; |
| 1385 | } |
| 1386 | |
| 1387 | /* set the environment; returns the old env if a new one was allocated */ |
| 1388 | Char **VG_(env_setenv) ( Char ***envp, const Char* varname, const Char *val ) |
| 1389 | { |
| 1390 | Char **env = (*envp); |
| 1391 | Char **cpp; |
| 1392 | Int len = VG_(strlen)(varname); |
| 1393 | Char *valstr = VG_(arena_malloc)(VG_AR_CORE, len + VG_(strlen)(val) + 2); |
| 1394 | Char **oldenv = NULL; |
| 1395 | |
| 1396 | VG_(sprintf)(valstr, "%s=%s", varname, val); |
| 1397 | |
| 1398 | for(cpp = env; cpp && *cpp; cpp++) { |
| 1399 | if (VG_(strncmp)(varname, *cpp, len) == 0 && (*cpp)[len] == '=') { |
| 1400 | *cpp = valstr; |
| 1401 | return oldenv; |
| 1402 | } |
| 1403 | } |
| 1404 | |
| 1405 | if (env == NULL) { |
| 1406 | env = VG_(arena_malloc)(VG_AR_CORE, sizeof(Char **) * 2); |
| 1407 | env[0] = valstr; |
| 1408 | env[1] = NULL; |
| 1409 | |
| 1410 | *envp = env; |
| 1411 | |
| 1412 | } else { |
| 1413 | Int envlen = (cpp-env) + 2; |
| 1414 | Char **newenv = VG_(arena_malloc)(VG_AR_CORE, envlen * sizeof(Char **)); |
| 1415 | |
| 1416 | for(cpp = newenv; *env; ) |
| 1417 | *cpp++ = *env++; |
| 1418 | *cpp++ = valstr; |
| 1419 | *cpp++ = NULL; |
| 1420 | |
| 1421 | oldenv = *envp; |
| 1422 | |
| 1423 | *envp = newenv; |
| 1424 | } |
| 1425 | |
| 1426 | return oldenv; |
| 1427 | } |
| 1428 | |
| 1429 | Char* VG_(env_getenv) ( Char **env, Char* varname ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1430 | { |
| 1431 | Int i, n; |
| 1432 | n = VG_(strlen)(varname); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1433 | for (i = 0; env[i] != NULL; i++) { |
| 1434 | Char* s = env[i]; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1435 | if (VG_(strncmp)(varname, s, n) == 0 && s[n] == '=') { |
| 1436 | return & s[n+1]; |
| 1437 | } |
| 1438 | } |
| 1439 | return NULL; |
| 1440 | } |
| 1441 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1442 | /* We do getenv without libc's help by snooping around in |
| 1443 | VG_(client_envp) as determined at startup time. */ |
| 1444 | Char *VG_(getenv)(Char *varname) |
| 1445 | { |
| 1446 | return VG_(env_getenv)(VG_(client_envp), varname); |
| 1447 | } |
sewardj | 4cf0569 | 2002-10-27 20:28:29 +0000 | [diff] [blame] | 1448 | |
rjwalsh | f5f536f | 2003-11-17 17:45:00 +0000 | [diff] [blame] | 1449 | /* Support for getrlimit. */ |
| 1450 | Int VG_(getrlimit) (Int resource, struct vki_rlimit *rlim) |
| 1451 | { |
| 1452 | Int res; |
| 1453 | /* res = getrlimit( resource, rlim ); */ |
| 1454 | res = VG_(do_syscall)(__NR_getrlimit, (UInt)resource, (UInt)rlim); |
| 1455 | if(VG_(is_kerror)(res)) res = -1; |
| 1456 | return res; |
| 1457 | } |
| 1458 | |
| 1459 | |
fitzhardinge | f0046f2 | 2003-12-18 02:39:22 +0000 | [diff] [blame] | 1460 | /* Support for setrlimit. */ |
| 1461 | Int VG_(setrlimit) (Int resource, struct vki_rlimit *rlim) |
| 1462 | { |
| 1463 | Int res; |
| 1464 | /* res = setrlimit( resource, rlim ); */ |
| 1465 | res = VG_(do_syscall)(__NR_setrlimit, (UInt)resource, (UInt)rlim); |
| 1466 | if(VG_(is_kerror)(res)) res = -1; |
| 1467 | return res; |
| 1468 | } |
| 1469 | |
| 1470 | |
rjwalsh | f5f536f | 2003-11-17 17:45:00 +0000 | [diff] [blame] | 1471 | /* Support for getdents. */ |
| 1472 | Int VG_(getdents) (UInt fd, struct vki_dirent *dirp, UInt count) |
| 1473 | { |
| 1474 | Int res; |
| 1475 | /* res = getdents( fd, dirp, count ); */ |
| 1476 | res = VG_(do_syscall)(__NR_getdents, fd, (UInt)dirp, count); |
| 1477 | if (VG_(is_kerror)(res)) res = -1; |
| 1478 | return res; |
| 1479 | } |
| 1480 | |
| 1481 | /* Support for a readlink. */ |
| 1482 | Int VG_(readlink) (Char* path, Char* buf, UInt bufsiz) |
| 1483 | { |
| 1484 | Int res; |
| 1485 | /* res = readlink( path, buf, bufsiz ); */ |
| 1486 | res = VG_(do_syscall)(__NR_readlink, (UInt)path, (UInt)buf, bufsiz); |
| 1487 | if (VG_(is_kerror)(res)) res = -1; |
| 1488 | return res; |
| 1489 | } |
| 1490 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1491 | /* You'd be amazed how many places need to know the current pid. */ |
| 1492 | Int VG_(getpid) ( void ) |
| 1493 | { |
| 1494 | Int res; |
| 1495 | /* res = getpid(); */ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1496 | res = VG_(do_syscall)(__NR_getpid); |
| 1497 | return res; |
| 1498 | } |
| 1499 | |
| 1500 | Int VG_(getpgrp) ( void ) |
| 1501 | { |
| 1502 | Int res; |
| 1503 | /* res = getpgid(); */ |
| 1504 | res = VG_(do_syscall)(__NR_getpgrp); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1505 | return res; |
| 1506 | } |
| 1507 | |
sewardj | 4cf0569 | 2002-10-27 20:28:29 +0000 | [diff] [blame] | 1508 | Int VG_(getppid) ( void ) |
| 1509 | { |
| 1510 | Int res; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1511 | res = VG_(do_syscall)(__NR_getppid); |
sewardj | 4cf0569 | 2002-10-27 20:28:29 +0000 | [diff] [blame] | 1512 | return res; |
| 1513 | } |
| 1514 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1515 | Int VG_(setpgid) ( Int pid, Int pgrp ) |
| 1516 | { |
| 1517 | return VG_(do_syscall)(__NR_setpgid, pid, pgrp); |
| 1518 | } |
sewardj | 4cf0569 | 2002-10-27 20:28:29 +0000 | [diff] [blame] | 1519 | |
sewardj | e6a2524 | 2002-04-21 22:03:07 +0000 | [diff] [blame] | 1520 | /* Return -1 if error, else 0. NOTE does not indicate return code of |
| 1521 | child! */ |
| 1522 | Int VG_(system) ( Char* cmd ) |
| 1523 | { |
| 1524 | Int pid, res; |
sewardj | e6a2524 | 2002-04-21 22:03:07 +0000 | [diff] [blame] | 1525 | if (cmd == NULL) |
| 1526 | return 1; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1527 | pid = VG_(do_syscall)(__NR_fork); |
sewardj | e6a2524 | 2002-04-21 22:03:07 +0000 | [diff] [blame] | 1528 | if (VG_(is_kerror)(pid)) |
| 1529 | return -1; |
| 1530 | if (pid == 0) { |
| 1531 | /* child */ |
nethercote | ff9721d | 2004-01-26 17:10:01 +0000 | [diff] [blame] | 1532 | static Char** envp = NULL; |
sewardj | e6a2524 | 2002-04-21 22:03:07 +0000 | [diff] [blame] | 1533 | Char* argv[4]; |
nethercote | ff9721d | 2004-01-26 17:10:01 +0000 | [diff] [blame] | 1534 | |
| 1535 | if (envp == NULL) { |
| 1536 | Int i; |
| 1537 | Char* ld_preload_str = NULL; |
| 1538 | Char* ld_library_path_str = NULL; |
| 1539 | Char* buf; |
| 1540 | |
| 1541 | envp = VG_(env_clone)(VG_(client_envp)); |
| 1542 | |
| 1543 | for (i = 0; envp[i] != NULL; i++) { |
| 1544 | if (VG_(strncmp)(envp[i], "LD_PRELOAD=", 11) == 0) |
| 1545 | ld_preload_str = &envp[i][11]; |
| 1546 | if (VG_(strncmp)(envp[i], "LD_LIBRARY_PATH=", 16) == 0) |
| 1547 | ld_library_path_str = &envp[i][16]; |
| 1548 | } |
| 1549 | |
| 1550 | buf = VG_(arena_malloc)(VG_AR_CORE, VG_(strlen)(VG_(libdir)) + 20); |
| 1551 | |
| 1552 | VG_(sprintf)(buf, "%s*/vg_inject.so", VG_(libdir)); |
| 1553 | VG_(mash_colon_env)(ld_preload_str, buf); |
| 1554 | |
| 1555 | VG_(sprintf)(buf, "%s*/vgpreload_*.so", VG_(libdir)); |
| 1556 | VG_(mash_colon_env)(ld_preload_str, buf); |
| 1557 | |
| 1558 | VG_(sprintf)(buf, "%s*", VG_(libdir)); |
| 1559 | VG_(mash_colon_env)(ld_library_path_str, buf); |
| 1560 | |
| 1561 | VG_(env_unsetenv)(envp, VALGRINDCLO); |
| 1562 | |
| 1563 | VG_(arena_free)(VG_AR_CORE, buf); |
| 1564 | } |
| 1565 | |
sewardj | e6a2524 | 2002-04-21 22:03:07 +0000 | [diff] [blame] | 1566 | argv[0] = "/bin/sh"; |
| 1567 | argv[1] = "-c"; |
| 1568 | argv[2] = cmd; |
| 1569 | argv[3] = 0; |
nethercote | ff9721d | 2004-01-26 17:10:01 +0000 | [diff] [blame] | 1570 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1571 | (void)VG_(do_syscall)(__NR_execve, |
nethercote | ff9721d | 2004-01-26 17:10:01 +0000 | [diff] [blame] | 1572 | (UInt)"/bin/sh", (UInt)argv, (UInt)envp); |
| 1573 | |
sewardj | e6a2524 | 2002-04-21 22:03:07 +0000 | [diff] [blame] | 1574 | /* If we're still alive here, execve failed. */ |
| 1575 | return -1; |
| 1576 | } else { |
| 1577 | /* parent */ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1578 | res = VG_(do_syscall)(__NR_waitpid, pid, (UInt)NULL, 0); |
sewardj | e6a2524 | 2002-04-21 22:03:07 +0000 | [diff] [blame] | 1579 | if (VG_(is_kerror)(res)) { |
| 1580 | return -1; |
| 1581 | } else { |
| 1582 | return 0; |
| 1583 | } |
| 1584 | } |
| 1585 | } |
| 1586 | |
| 1587 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1588 | /* --------------------------------------------------------------------- |
fitzhardinge | 6687169 | 2004-01-25 03:32:58 +0000 | [diff] [blame] | 1589 | Support for a millisecond-granularity timer. |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1590 | ------------------------------------------------------------------ */ |
| 1591 | |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1592 | UInt VG_(read_millisecond_timer) ( void ) |
| 1593 | { |
fitzhardinge | 426f9e6 | 2004-01-25 03:44:18 +0000 | [diff] [blame] | 1594 | static ULong base = 0; |
fitzhardinge | 6687169 | 2004-01-25 03:32:58 +0000 | [diff] [blame] | 1595 | struct vki_timeval tv_now; |
| 1596 | ULong now; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1597 | Int res; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1598 | |
fitzhardinge | 6687169 | 2004-01-25 03:32:58 +0000 | [diff] [blame] | 1599 | res = VG_(do_syscall)(__NR_gettimeofday, (UInt)&tv_now, |
| 1600 | (UInt)NULL); |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1601 | |
fitzhardinge | 6687169 | 2004-01-25 03:32:58 +0000 | [diff] [blame] | 1602 | now = tv_now.tv_sec * 1000000ULL + tv_now.tv_usec; |
| 1603 | |
| 1604 | if (base == 0) |
| 1605 | base = now; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1606 | |
fitzhardinge | 6687169 | 2004-01-25 03:32:58 +0000 | [diff] [blame] | 1607 | return (now - base) / 1000; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1608 | } |
| 1609 | |
| 1610 | |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1611 | /* --------------------------------------------------------------------- |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1612 | Primitive support for bagging memory via mmap. |
| 1613 | ------------------------------------------------------------------ */ |
| 1614 | |
sewardj | e904795 | 2002-06-05 20:28:33 +0000 | [diff] [blame] | 1615 | void* VG_(get_memory_from_mmap) ( Int nBytes, Char* who ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1616 | { |
| 1617 | static UInt tot_alloc = 0; |
sewardj | 7c2020b | 2002-09-30 22:56:03 +0000 | [diff] [blame] | 1618 | void* p; |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1619 | |
| 1620 | #if 0 |
| 1621 | p = VG_(mmap)( (void *)VG_(valgrind_base), nBytes, |
| 1622 | VKI_PROT_READ | VKI_PROT_WRITE | VKI_PROT_EXEC, |
| 1623 | VKI_MAP_PRIVATE | VKI_MAP_ANONYMOUS, -1, 0 ); |
| 1624 | #else |
| 1625 | /* use brk, because it will definitely be in the valgrind address space */ |
| 1626 | { |
| 1627 | Char *b = VG_(brk)(0); |
| 1628 | |
| 1629 | p = (void *)PGROUNDUP(b); |
| 1630 | |
| 1631 | b = VG_(brk)(p + PGROUNDUP(nBytes)); |
| 1632 | |
| 1633 | if (b != (p + PGROUNDUP(nBytes))) |
| 1634 | p = (void *)-1; |
| 1635 | } |
| 1636 | #endif |
| 1637 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1638 | if (p != ((void*)(-1))) { |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1639 | vg_assert(p >= (void *)VG_(valgrind_mmap_end) && p < (void *)VG_(valgrind_end)); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1640 | tot_alloc += (UInt)nBytes; |
| 1641 | if (0) |
sewardj | e904795 | 2002-06-05 20:28:33 +0000 | [diff] [blame] | 1642 | VG_(printf)( |
| 1643 | "get_memory_from_mmap: %d tot, %d req = %p .. %p, caller %s\n", |
| 1644 | tot_alloc, nBytes, p, ((char*)p) + nBytes - 1, who ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1645 | return p; |
| 1646 | } |
sewardj | 7c2020b | 2002-09-30 22:56:03 +0000 | [diff] [blame] | 1647 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1648 | VG_(printf)("\n"); |
daywalker | b1db123 | 2003-09-26 00:26:07 +0000 | [diff] [blame] | 1649 | VG_(printf)("VG_(get_memory_from_mmap): %s's request for %d bytes failed.\n", |
| 1650 | who, nBytes); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1651 | VG_(printf)("VG_(get_memory_from_mmap): %d bytes already allocated.\n", |
| 1652 | tot_alloc); |
| 1653 | VG_(printf)("\n"); |
| 1654 | VG_(printf)("This may mean that you have run out of swap space,\n"); |
| 1655 | VG_(printf)("since running programs on valgrind increases their memory\n"); |
| 1656 | VG_(printf)("usage at least 3 times. You might want to use 'top'\n"); |
| 1657 | VG_(printf)("to determine whether you really have run out of swap.\n"); |
| 1658 | VG_(printf)("If so, you may be able to work around it by adding a\n"); |
| 1659 | VG_(printf)("temporary swap file -- this is easier than finding a\n"); |
| 1660 | VG_(printf)("new swap partition. Go ask your sysadmin(s) [politely!]\n"); |
| 1661 | VG_(printf)("\n"); |
| 1662 | VG_(printf)("VG_(get_memory_from_mmap): out of memory! Fatal! Bye!\n"); |
| 1663 | VG_(printf)("\n"); |
| 1664 | VG_(exit)(1); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1665 | } |
| 1666 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1667 | /* --------------------------------------------------------------------- |
| 1668 | Generally useful... |
| 1669 | ------------------------------------------------------------------ */ |
| 1670 | |
| 1671 | Int VG_(log2) ( Int x ) |
| 1672 | { |
| 1673 | Int i; |
| 1674 | /* Any more than 32 and we overflow anyway... */ |
| 1675 | for (i = 0; i < 32; i++) { |
| 1676 | if (1 << i == x) return i; |
| 1677 | } |
| 1678 | return -1; |
| 1679 | } |
| 1680 | |
| 1681 | |
njn | d3b0c5f | 2003-09-30 14:43:54 +0000 | [diff] [blame] | 1682 | // Generic shell sort. Like stdlib.h's qsort(). |
| 1683 | void VG_(ssort)( void* base, UInt nmemb, UInt size, |
| 1684 | Int (*compar)(void*, void*) ) |
| 1685 | { |
| 1686 | Int incs[14] = { 1, 4, 13, 40, 121, 364, 1093, 3280, |
| 1687 | 9841, 29524, 88573, 265720, |
| 1688 | 797161, 2391484 }; |
| 1689 | Int lo = 0; |
| 1690 | Int hi = nmemb-1; |
| 1691 | Int i, j, h, bigN, hp; |
| 1692 | |
| 1693 | bigN = hi - lo + 1; if (bigN < 2) return; |
| 1694 | hp = 0; while (hp < 14 && incs[hp] < bigN) hp++; hp--; |
| 1695 | vg_assert(0 <= hp && hp < 14); |
| 1696 | |
| 1697 | #define SORT \ |
| 1698 | for ( ; hp >= 0; hp--) { \ |
| 1699 | h = incs[hp]; \ |
njn | 92c5436 | 2003-10-15 14:00:35 +0000 | [diff] [blame] | 1700 | for (i = lo + h; i <= hi; i++) { \ |
njn | d3b0c5f | 2003-09-30 14:43:54 +0000 | [diff] [blame] | 1701 | ASSIGN(v,0, a,i); \ |
| 1702 | j = i; \ |
njn | 92c5436 | 2003-10-15 14:00:35 +0000 | [diff] [blame] | 1703 | while (COMPAR(a,(j-h), v,0) > 0) { \ |
njn | d3b0c5f | 2003-09-30 14:43:54 +0000 | [diff] [blame] | 1704 | ASSIGN(a,j, a,(j-h)); \ |
| 1705 | j = j - h; \ |
| 1706 | if (j <= (lo + h - 1)) break; \ |
| 1707 | } \ |
| 1708 | ASSIGN(a,j, v,0); \ |
njn | d3b0c5f | 2003-09-30 14:43:54 +0000 | [diff] [blame] | 1709 | } \ |
| 1710 | } |
| 1711 | |
| 1712 | // Specialised cases |
| 1713 | if (sizeof(UInt) == size) { |
| 1714 | |
| 1715 | #define ASSIGN(dst, dsti, src, srci) \ |
| 1716 | (dst)[(dsti)] = (src)[(srci)]; |
| 1717 | |
| 1718 | #define COMPAR(dst, dsti, src, srci) \ |
| 1719 | compar( (void*)(& (dst)[(dsti)]), (void*)(& (src)[(srci)]) ) |
| 1720 | |
| 1721 | UInt* a = (UInt*)base; |
| 1722 | UInt v[1]; |
| 1723 | |
| 1724 | SORT; |
| 1725 | |
| 1726 | } else if (sizeof(UShort) == size) { |
| 1727 | UShort* a = (UShort*)base; |
| 1728 | UShort v[1]; |
| 1729 | |
| 1730 | SORT; |
| 1731 | |
| 1732 | } else if (sizeof(UChar) == size) { |
| 1733 | UChar* a = (UChar*)base; |
| 1734 | UChar v[1]; |
| 1735 | |
| 1736 | SORT; |
| 1737 | |
| 1738 | #undef ASSIGN |
| 1739 | #undef COMPAR |
| 1740 | |
| 1741 | // General case |
| 1742 | } else { |
njn | 92c5436 | 2003-10-15 14:00:35 +0000 | [diff] [blame] | 1743 | char* a = base; |
| 1744 | char v[size]; // will be at least 'size' bytes |
njn | d3b0c5f | 2003-09-30 14:43:54 +0000 | [diff] [blame] | 1745 | |
| 1746 | #define ASSIGN(dst, dsti, src, srci) \ |
njn | 92c5436 | 2003-10-15 14:00:35 +0000 | [diff] [blame] | 1747 | VG_(memcpy)( &dst[size*(dsti)], &src[size*(srci)], size ); |
njn | d3b0c5f | 2003-09-30 14:43:54 +0000 | [diff] [blame] | 1748 | |
| 1749 | #define COMPAR(dst, dsti, src, srci) \ |
njn | 92c5436 | 2003-10-15 14:00:35 +0000 | [diff] [blame] | 1750 | compar( &dst[size*(dsti)], &src[size*(srci)] ) |
njn | d3b0c5f | 2003-09-30 14:43:54 +0000 | [diff] [blame] | 1751 | |
| 1752 | SORT; |
| 1753 | |
| 1754 | #undef ASSIGN |
| 1755 | #undef COMPAR |
| 1756 | } |
| 1757 | #undef SORT |
| 1758 | } |
| 1759 | |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1760 | /* --------------------------------------------------------------------- |
| 1761 | Gruesome hackery for connecting to a logging server over the network. |
| 1762 | This is all very Linux-kernel specific. |
| 1763 | ------------------------------------------------------------------ */ |
| 1764 | |
| 1765 | /* Various needed constants from the kernel iface (2.4), |
| 1766 | /usr/src/linux-2.4.9-31 */ |
| 1767 | |
| 1768 | /* kernel, ./include/linux/net.h */ |
rjwalsh | f5f536f | 2003-11-17 17:45:00 +0000 | [diff] [blame] | 1769 | #define SYS_SOCKET 1 /* sys_socket(2) */ |
| 1770 | #define SYS_CONNECT 3 /* sys_connect(2) */ |
| 1771 | #define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */ |
| 1772 | #define SYS_GETPEERNAME 7 /* sys_getpeername(2) */ |
| 1773 | #define SYS_SEND 9 /* sys_send(2) */ |
| 1774 | #define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */ |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1775 | |
| 1776 | typedef UInt __u32; |
| 1777 | |
| 1778 | /* Internet address. */ |
| 1779 | struct vki_in_addr { |
| 1780 | __u32 s_addr; |
| 1781 | }; |
| 1782 | |
| 1783 | /* kernel, include/linux/socket.h */ |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1784 | #define AF_INET 2 /* Internet IP Protocol */ |
sewardj | 570f890 | 2002-11-03 11:44:36 +0000 | [diff] [blame] | 1785 | #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1786 | |
| 1787 | /* kernel, ./include/asm-i386/socket.h */ |
| 1788 | #define SOCK_STREAM 1 /* stream (connection) socket */ |
| 1789 | |
| 1790 | /* kernel, /usr/src/linux-2.4.9-31/linux/include/in.h */ |
| 1791 | /* Structure describing an Internet (IP) socket address. */ |
| 1792 | #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ |
| 1793 | struct vki_sockaddr_in { |
| 1794 | vki_sa_family_t sin_family; /* Address family */ |
| 1795 | unsigned short int sin_port; /* Port number */ |
| 1796 | struct vki_in_addr sin_addr; /* Internet address */ |
| 1797 | |
| 1798 | /* Pad to size of `struct sockaddr'. */ |
| 1799 | unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) - |
| 1800 | sizeof(unsigned short int) - |
| 1801 | sizeof(struct vki_in_addr)]; |
| 1802 | }; |
| 1803 | |
| 1804 | |
| 1805 | static |
| 1806 | Int parse_inet_addr_and_port ( UChar* str, UInt* ip_addr, UShort* port ); |
| 1807 | |
| 1808 | static |
| 1809 | Int my_socket ( Int domain, Int type, Int protocol ); |
| 1810 | |
| 1811 | static |
| 1812 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, |
| 1813 | Int addrlen ); |
| 1814 | |
| 1815 | static |
| 1816 | UInt my_htonl ( UInt x ) |
| 1817 | { |
| 1818 | return |
| 1819 | (((x >> 24) & 0xFF) << 0) | (((x >> 16) & 0xFF) << 8) |
| 1820 | | (((x >> 8) & 0xFF) << 16) | (((x >> 0) & 0xFF) << 24); |
| 1821 | } |
| 1822 | |
| 1823 | static |
| 1824 | UShort my_htons ( UShort x ) |
| 1825 | { |
| 1826 | return |
| 1827 | (((x >> 8) & 0xFF) << 0) | (((x >> 0) & 0xFF) << 8); |
| 1828 | } |
| 1829 | |
| 1830 | |
| 1831 | /* The main function. |
| 1832 | |
| 1833 | Supplied string contains either an ip address "192.168.0.1" or |
| 1834 | an ip address and port pair, "192.168.0.1:1500". Parse these, |
| 1835 | and return: |
| 1836 | -1 if there is a parse error |
| 1837 | -2 if no parse error, but specified host:port cannot be opened |
| 1838 | the relevant file (socket) descriptor, otherwise. |
sewardj | 4f094a7 | 2002-11-05 23:37:35 +0000 | [diff] [blame] | 1839 | is used. |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1840 | */ |
| 1841 | Int VG_(connect_via_socket)( UChar* str ) |
| 1842 | { |
| 1843 | Int sd, res; |
| 1844 | struct vki_sockaddr_in servAddr; |
| 1845 | UInt ip = 0; |
sewardj | 4f094a7 | 2002-11-05 23:37:35 +0000 | [diff] [blame] | 1846 | UShort port = VG_CLO_DEFAULT_LOGPORT; |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1847 | Bool ok = parse_inet_addr_and_port(str, &ip, &port); |
| 1848 | if (!ok) |
| 1849 | return -1; |
| 1850 | |
| 1851 | if (0) |
| 1852 | VG_(printf)("ip = %d.%d.%d.%d, port %d\n", |
| 1853 | (ip >> 24) & 0xFF, (ip >> 16) & 0xFF, |
| 1854 | (ip >> 8) & 0xFF, ip & 0xFF, |
| 1855 | (UInt)port ); |
| 1856 | |
| 1857 | servAddr.sin_family = AF_INET; |
| 1858 | servAddr.sin_addr.s_addr = my_htonl(ip); |
| 1859 | servAddr.sin_port = my_htons(port); |
| 1860 | |
| 1861 | /* create socket */ |
| 1862 | sd = my_socket(AF_INET, SOCK_STREAM, 0 /* IPPROTO_IP ? */); |
| 1863 | if (sd < 0) { |
| 1864 | /* this shouldn't happen ... nevertheless */ |
| 1865 | return -2; |
| 1866 | } |
| 1867 | |
| 1868 | /* connect to server */ |
| 1869 | res = my_connect(sd, (struct vki_sockaddr_in *) &servAddr, |
| 1870 | sizeof(servAddr)); |
| 1871 | if (res < 0) { |
| 1872 | /* connection failed */ |
| 1873 | return -2; |
| 1874 | } |
| 1875 | |
| 1876 | return sd; |
| 1877 | } |
| 1878 | |
| 1879 | |
| 1880 | /* Let d = one or more digits. Accept either: |
| 1881 | d.d.d.d or d.d.d.d:d |
| 1882 | */ |
| 1883 | Int parse_inet_addr_and_port ( UChar* str, UInt* ip_addr, UShort* port ) |
| 1884 | { |
| 1885 | # define GET_CH ((*str) ? (*str++) : 0) |
| 1886 | UInt ipa, i, j, c, any; |
| 1887 | ipa = 0; |
| 1888 | for (i = 0; i < 4; i++) { |
| 1889 | j = 0; |
| 1890 | any = 0; |
| 1891 | while (1) { |
| 1892 | c = GET_CH; |
| 1893 | if (c < '0' || c > '9') break; |
| 1894 | j = 10 * j + (int)(c - '0'); |
| 1895 | any = 1; |
| 1896 | } |
| 1897 | if (any == 0 || j > 255) goto syntaxerr; |
| 1898 | ipa = (ipa << 8) + j; |
| 1899 | if (i <= 2 && c != '.') goto syntaxerr; |
| 1900 | } |
| 1901 | if (c == 0 || c == ':') |
| 1902 | *ip_addr = ipa; |
| 1903 | if (c == 0) goto ok; |
| 1904 | if (c != ':') goto syntaxerr; |
| 1905 | j = 0; |
| 1906 | any = 0; |
| 1907 | while (1) { |
| 1908 | c = GET_CH; |
| 1909 | if (c < '0' || c > '9') break; |
| 1910 | j = j * 10 + (int)(c - '0'); |
| 1911 | any = 1; |
| 1912 | if (j > 65535) goto syntaxerr; |
| 1913 | } |
| 1914 | if (any == 0 || c != 0) goto syntaxerr; |
sewardj | d222067 | 2002-11-13 19:41:41 +0000 | [diff] [blame] | 1915 | if (j < 1024) goto syntaxerr; |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1916 | *port = (UShort)j; |
| 1917 | ok: |
| 1918 | return 1; |
| 1919 | syntaxerr: |
| 1920 | return 0; |
| 1921 | # undef GET_CH |
| 1922 | } |
| 1923 | |
| 1924 | |
| 1925 | static |
| 1926 | Int my_socket ( Int domain, Int type, Int protocol ) |
| 1927 | { |
| 1928 | Int res; |
| 1929 | UInt args[3]; |
| 1930 | args[0] = domain; |
| 1931 | args[1] = type; |
| 1932 | args[2] = protocol; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1933 | res = VG_(do_syscall)(__NR_socketcall, SYS_SOCKET, (UInt)&args); |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1934 | if (VG_(is_kerror)(res)) |
| 1935 | res = -1; |
| 1936 | return res; |
| 1937 | } |
| 1938 | |
| 1939 | static |
| 1940 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, |
| 1941 | Int addrlen ) |
| 1942 | { |
| 1943 | Int res; |
| 1944 | UInt args[3]; |
| 1945 | args[0] = sockfd; |
| 1946 | args[1] = (UInt)serv_addr; |
| 1947 | args[2] = addrlen; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1948 | res = VG_(do_syscall)(__NR_socketcall, SYS_CONNECT, (UInt)&args); |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1949 | if (VG_(is_kerror)(res)) |
| 1950 | res = -1; |
| 1951 | return res; |
| 1952 | } |
| 1953 | |
| 1954 | Int VG_(write_socket)( Int sd, void *msg, Int count ) |
| 1955 | { |
| 1956 | /* This is actually send(). */ |
sewardj | 570f890 | 2002-11-03 11:44:36 +0000 | [diff] [blame] | 1957 | |
| 1958 | /* Requests not to send SIGPIPE on errors on stream oriented |
| 1959 | sockets when the other end breaks the connection. The EPIPE |
| 1960 | error is still returned. */ |
| 1961 | Int flags = MSG_NOSIGNAL; |
| 1962 | |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1963 | Int res; |
| 1964 | UInt args[4]; |
| 1965 | args[0] = sd; |
| 1966 | args[1] = (UInt)msg; |
| 1967 | args[2] = count; |
| 1968 | args[3] = flags; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1969 | res = VG_(do_syscall)(__NR_socketcall, SYS_SEND, (UInt)&args); |
sewardj | 73cf3bc | 2002-11-03 03:20:15 +0000 | [diff] [blame] | 1970 | if (VG_(is_kerror)(res)) |
| 1971 | res = -1; |
| 1972 | return res; |
| 1973 | } |
| 1974 | |
rjwalsh | f5f536f | 2003-11-17 17:45:00 +0000 | [diff] [blame] | 1975 | Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1976 | { |
| 1977 | Int res; |
| 1978 | UInt args[3]; |
| 1979 | args[0] = sd; |
| 1980 | args[1] = (UInt)name; |
| 1981 | args[2] = (UInt)namelen; |
| 1982 | res = VG_(do_syscall)(__NR_socketcall, SYS_GETSOCKNAME, (UInt)&args); |
| 1983 | if(VG_(is_kerror)(res)) |
| 1984 | res = -1; |
| 1985 | return res; |
| 1986 | } |
| 1987 | |
| 1988 | Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1989 | { |
| 1990 | Int res; |
| 1991 | UInt args[3]; |
| 1992 | args[0] = sd; |
| 1993 | args[1] = (UInt)name; |
| 1994 | args[2] = (UInt)namelen; |
| 1995 | res = VG_(do_syscall)(__NR_socketcall, SYS_GETPEERNAME, (UInt)&args); |
| 1996 | if(VG_(is_kerror)(res)) |
| 1997 | res = -1; |
| 1998 | return res; |
| 1999 | } |
| 2000 | |
| 2001 | Int VG_(getsockopt) ( Int sd, Int level, Int optname, void *optval, |
| 2002 | Int *optlen) |
| 2003 | { |
| 2004 | Int res; |
| 2005 | UInt args[5]; |
| 2006 | args[0] = sd; |
| 2007 | args[1] = (UInt)level; |
| 2008 | args[2] = (UInt)optname; |
| 2009 | args[3] = (UInt)optval; |
| 2010 | args[4] = (UInt)optlen; |
| 2011 | res = VG_(do_syscall)(__NR_socketcall, SYS_GETSOCKOPT, (UInt)&args); |
| 2012 | if(VG_(is_kerror)(res)) |
| 2013 | res = -1; |
| 2014 | return res; |
| 2015 | } |
| 2016 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2017 | |
| 2018 | /*--------------------------------------------------------------------*/ |
| 2019 | /*--- end vg_mylibc.c ---*/ |
| 2020 | /*--------------------------------------------------------------------*/ |