sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Ptrcheck: a pointer-use checker. pc_intercepts.c ---*/ |
| 4 | /*--------------------------------------------------------------------*/ |
| 5 | |
| 6 | /* |
| 7 | This file is part of Ptrcheck, a Valgrind tool for checking pointer |
| 8 | use in programs. |
| 9 | |
sewardj | 03f8d3f | 2012-08-05 15:46:46 +0000 | [diff] [blame] | 10 | Copyright (C) 2003-2012 Nicholas Nethercote |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 11 | njn@valgrind.org |
| 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 | |
| 31 | /* Nothing actually in here. However it appears this file is needed |
| 32 | to make malloc intercepting work. (jrs, 2 july 08 -- not sure about |
| 33 | that). |
| 34 | */ |
| 35 | |
| 36 | #include "pub_tool_basics.h" |
| 37 | #include "pub_tool_hashtable.h" |
| 38 | #include "pub_tool_redir.h" |
| 39 | #include "pub_tool_tooliface.h" |
| 40 | #include "valgrind.h" |
| 41 | |
| 42 | |
| 43 | /* The following intercepts are copied verbatim from |
sewardj | dda0df8 | 2008-10-21 23:11:38 +0000 | [diff] [blame] | 44 | memcheck/mc_replace_strmem.c. If you copy more in, please keep |
| 45 | them in the same order as in mc_replace_strmem.c. */ |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 46 | |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 47 | |
sewardj | da387f2 | 2010-02-15 09:57:49 +0000 | [diff] [blame] | 48 | #define STRRCHR(soname, fnname) \ |
| 49 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* s, int c ); \ |
| 50 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* s, int c ) \ |
| 51 | { \ |
| 52 | UChar ch = (UChar)((UInt)c); \ |
| 53 | UChar* p = (UChar*)s; \ |
| 54 | UChar* last = NULL; \ |
| 55 | while (True) { \ |
| 56 | if (*p == ch) last = p; \ |
| 57 | if (*p == 0) return last; \ |
| 58 | p++; \ |
| 59 | } \ |
| 60 | } |
| 61 | |
| 62 | // Apparently rindex() is the same thing as strrchr() |
| 63 | STRRCHR(VG_Z_LIBC_SONAME, strrchr) |
| 64 | STRRCHR(VG_Z_LIBC_SONAME, rindex) |
| 65 | #if defined(VGO_linux) |
| 66 | STRRCHR(VG_Z_LIBC_SONAME, __GI_strrchr) |
| 67 | STRRCHR(VG_Z_LD_LINUX_SO_2, rindex) |
| 68 | #elif defined(VGO_darwin) |
| 69 | STRRCHR(VG_Z_DYLD, strrchr) |
| 70 | STRRCHR(VG_Z_DYLD, rindex) |
| 71 | #endif |
| 72 | |
| 73 | |
| 74 | #define STRCHR(soname, fnname) \ |
| 75 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* s, int c ); \ |
| 76 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* s, int c ) \ |
| 77 | { \ |
| 78 | UChar ch = (UChar)((UInt)c); \ |
| 79 | UChar* p = (UChar*)s; \ |
| 80 | while (True) { \ |
| 81 | if (*p == ch) return p; \ |
| 82 | if (*p == 0) return NULL; \ |
| 83 | p++; \ |
| 84 | } \ |
| 85 | } |
| 86 | |
| 87 | // Apparently index() is the same thing as strchr() |
| 88 | STRCHR(VG_Z_LIBC_SONAME, strchr) |
| 89 | STRCHR(VG_Z_LIBC_SONAME, index) |
| 90 | #if defined(VGO_linux) |
| 91 | STRCHR(VG_Z_LIBC_SONAME, __GI_strchr) |
| 92 | STRCHR(VG_Z_LD_LINUX_SO_2, strchr) |
| 93 | STRCHR(VG_Z_LD_LINUX_SO_2, index) |
| 94 | STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, strchr) |
| 95 | STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, index) |
| 96 | #elif defined(VGO_darwin) |
| 97 | STRCHR(VG_Z_DYLD, strchr) |
| 98 | STRCHR(VG_Z_DYLD, index) |
| 99 | #endif |
| 100 | |
| 101 | |
sewardj | 7e98c03 | 2009-01-26 00:06:43 +0000 | [diff] [blame] | 102 | #define STRNLEN(soname, fnname) \ |
| 103 | SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* str, SizeT n ); \ |
| 104 | SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* str, SizeT n ) \ |
| 105 | { \ |
| 106 | SizeT i = 0; \ |
| 107 | while (i < n && str[i] != 0) i++; \ |
| 108 | return i; \ |
| 109 | } |
| 110 | |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 111 | STRNLEN(VG_Z_LIBC_SONAME, strnlen) |
sewardj | 7e98c03 | 2009-01-26 00:06:43 +0000 | [diff] [blame] | 112 | |
| 113 | |
sewardj | dda0df8 | 2008-10-21 23:11:38 +0000 | [diff] [blame] | 114 | // Note that this replacement often doesn't get used because gcc inlines |
| 115 | // calls to strlen() with its own built-in version. This can be very |
| 116 | // confusing if you aren't expecting it. Other small functions in this file |
| 117 | // may also be inline by gcc. |
| 118 | #define STRLEN(soname, fnname) \ |
| 119 | SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ); \ |
| 120 | SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ) \ |
| 121 | { \ |
| 122 | SizeT i = 0; \ |
| 123 | while (str[i] != 0) i++; \ |
| 124 | return i; \ |
| 125 | } |
| 126 | |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 127 | STRLEN(VG_Z_LIBC_SONAME, strlen) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 128 | #if defined(VGO_linux) |
sewardj | 4eff11b | 2010-08-16 22:56:16 +0000 | [diff] [blame] | 129 | STRLEN(VG_Z_LIBC_SONAME, __GI_strlen) |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 130 | STRLEN(VG_Z_LD_LINUX_SO_2, strlen) |
| 131 | STRLEN(VG_Z_LD_LINUX_X86_64_SO_2, strlen) |
| 132 | STRLEN(VG_Z_LD_SO_1, strlen) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 133 | #endif |
sewardj | dda0df8 | 2008-10-21 23:11:38 +0000 | [diff] [blame] | 134 | |
| 135 | |
sewardj | 4eff11b | 2010-08-16 22:56:16 +0000 | [diff] [blame] | 136 | #define STRCPY(soname, fnname) \ |
| 137 | char* VG_REPLACE_FUNCTION_ZU(soname, fnname) ( char* dst, const char* src ); \ |
| 138 | char* VG_REPLACE_FUNCTION_ZU(soname, fnname) ( char* dst, const char* src ) \ |
| 139 | { \ |
| 140 | Char* dst_orig = dst; \ |
| 141 | \ |
| 142 | while (*src) *dst++ = *src++; \ |
| 143 | *dst = 0; \ |
| 144 | \ |
| 145 | return dst_orig; \ |
| 146 | } |
| 147 | |
| 148 | STRCPY(VG_Z_LIBC_SONAME, strcpy) |
| 149 | #if defined(VGO_linux) |
| 150 | STRCPY(VG_Z_LIBC_SONAME, __GI_strcpy) |
| 151 | #elif defined(VGO_darwin) |
| 152 | STRCPY(VG_Z_DYLD, strcpy) |
| 153 | #endif |
| 154 | |
| 155 | |
| 156 | #define STRNCMP(soname, fnname) \ |
| 157 | int VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 158 | ( const char* s1, const char* s2, SizeT nmax ); \ |
| 159 | int VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 160 | ( const char* s1, const char* s2, SizeT nmax ) \ |
| 161 | { \ |
| 162 | SizeT n = 0; \ |
| 163 | while (True) { \ |
| 164 | if (n >= nmax) return 0; \ |
| 165 | if (*s1 == 0 && *s2 == 0) return 0; \ |
| 166 | if (*s1 == 0) return -1; \ |
| 167 | if (*s2 == 0) return 1; \ |
| 168 | \ |
| 169 | if (*(unsigned char*)s1 < *(unsigned char*)s2) return -1; \ |
| 170 | if (*(unsigned char*)s1 > *(unsigned char*)s2) return 1; \ |
| 171 | \ |
| 172 | s1++; s2++; n++; \ |
| 173 | } \ |
| 174 | } |
| 175 | |
| 176 | STRNCMP(VG_Z_LIBC_SONAME, strncmp) |
| 177 | #if defined(VGO_linux) |
| 178 | STRNCMP(VG_Z_LIBC_SONAME, __GI_strncmp) |
| 179 | #elif defined(VGO_darwin) |
| 180 | STRNCMP(VG_Z_DYLD, strncmp) |
| 181 | #endif |
| 182 | |
| 183 | |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 184 | #define STRCMP(soname, fnname) \ |
| 185 | int VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 186 | ( const char* s1, const char* s2 ); \ |
| 187 | int VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 188 | ( const char* s1, const char* s2 ) \ |
| 189 | { \ |
| 190 | register unsigned char c1; \ |
| 191 | register unsigned char c2; \ |
| 192 | while (True) { \ |
| 193 | c1 = *(unsigned char *)s1; \ |
| 194 | c2 = *(unsigned char *)s2; \ |
| 195 | if (c1 != c2) break; \ |
| 196 | if (c1 == 0) break; \ |
| 197 | s1++; s2++; \ |
| 198 | } \ |
| 199 | if ((unsigned char)c1 < (unsigned char)c2) return -1; \ |
| 200 | if ((unsigned char)c1 > (unsigned char)c2) return 1; \ |
| 201 | return 0; \ |
| 202 | } |
| 203 | |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 204 | STRCMP(VG_Z_LIBC_SONAME, strcmp) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 205 | #if defined(VGO_linux) |
sewardj | 4eff11b | 2010-08-16 22:56:16 +0000 | [diff] [blame] | 206 | STRCMP(VG_Z_LIBC_SONAME, __GI_strcmp) |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 207 | STRCMP(VG_Z_LD_LINUX_X86_64_SO_2, strcmp) |
| 208 | STRCMP(VG_Z_LD64_SO_1, strcmp) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 209 | #endif |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 210 | |
| 211 | |
sewardj | da387f2 | 2010-02-15 09:57:49 +0000 | [diff] [blame] | 212 | #define MEMCHR(soname, fnname) \ |
| 213 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) (const void *s, int c, SizeT n); \ |
| 214 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) (const void *s, int c, SizeT n) \ |
| 215 | { \ |
| 216 | SizeT i; \ |
| 217 | UChar c0 = (UChar)c; \ |
| 218 | UChar* p = (UChar*)s; \ |
| 219 | for (i = 0; i < n; i++) \ |
| 220 | if (p[i] == c0) return (void*)(&p[i]); \ |
| 221 | return NULL; \ |
| 222 | } |
| 223 | |
| 224 | MEMCHR(VG_Z_LIBC_SONAME, memchr) |
| 225 | #if defined(VGO_darwin) |
| 226 | MEMCHR(VG_Z_DYLD, memchr) |
| 227 | #endif |
| 228 | |
| 229 | |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 230 | #define MEMCPY(soname, fnname) \ |
| 231 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
sewardj | 650cf76 | 2012-08-24 16:42:57 +0000 | [diff] [blame] | 232 | ( void *dst, const void *src, SizeT len ); \ |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 233 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
sewardj | 650cf76 | 2012-08-24 16:42:57 +0000 | [diff] [blame] | 234 | ( void *dst, const void *src, SizeT len ) \ |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 235 | { \ |
sewardj | 650cf76 | 2012-08-24 16:42:57 +0000 | [diff] [blame] | 236 | const Addr WS = sizeof(UWord); /* 8 or 4 */ \ |
| 237 | const Addr WM = WS - 1; /* 7 or 3 */ \ |
| 238 | \ |
| 239 | if (len > 0) { \ |
| 240 | if (dst < src) { \ |
| 241 | \ |
| 242 | /* Copying backwards. */ \ |
| 243 | SizeT n = len; \ |
| 244 | Addr d = (Addr)dst; \ |
| 245 | Addr s = (Addr)src; \ |
| 246 | \ |
| 247 | if (((s^d) & WM) == 0) { \ |
| 248 | /* s and d have same UWord alignment. */ \ |
| 249 | /* Pull up to a UWord boundary. */ \ |
| 250 | while ((s & WM) != 0 && n >= 1) \ |
| 251 | { *(UChar*)d = *(UChar*)s; s += 1; d += 1; n -= 1; } \ |
| 252 | /* Copy UWords. */ \ |
| 253 | while (n >= WS) \ |
| 254 | { *(UWord*)d = *(UWord*)s; s += WS; d += WS; n -= WS; } \ |
| 255 | if (n == 0) \ |
| 256 | return dst; \ |
| 257 | } \ |
| 258 | if (((s|d) & 1) == 0) { \ |
| 259 | /* Both are 16-aligned; copy what we can thusly. */ \ |
| 260 | while (n >= 2) \ |
| 261 | { *(UShort*)d = *(UShort*)s; s += 2; d += 2; n -= 2; } \ |
| 262 | } \ |
| 263 | /* Copy leftovers, or everything if misaligned. */ \ |
| 264 | while (n >= 1) \ |
| 265 | { *(UChar*)d = *(UChar*)s; s += 1; d += 1; n -= 1; } \ |
| 266 | \ |
| 267 | } else if (dst > src) { \ |
| 268 | \ |
| 269 | SizeT n = len; \ |
| 270 | Addr d = ((Addr)dst) + n; \ |
| 271 | Addr s = ((Addr)src) + n; \ |
| 272 | \ |
| 273 | /* Copying forwards. */ \ |
| 274 | if (((s^d) & WM) == 0) { \ |
| 275 | /* s and d have same UWord alignment. */ \ |
| 276 | /* Back down to a UWord boundary. */ \ |
| 277 | while ((s & WM) != 0 && n >= 1) \ |
| 278 | { s -= 1; d -= 1; *(UChar*)d = *(UChar*)s; n -= 1; } \ |
| 279 | /* Copy UWords. */ \ |
| 280 | while (n >= WS) \ |
| 281 | { s -= WS; d -= WS; *(UWord*)d = *(UWord*)s; n -= WS; } \ |
| 282 | if (n == 0) \ |
| 283 | return dst; \ |
| 284 | } \ |
| 285 | if (((s|d) & 1) == 0) { \ |
| 286 | /* Both are 16-aligned; copy what we can thusly. */ \ |
| 287 | while (n >= 2) \ |
| 288 | { s -= 2; d -= 2; *(UShort*)d = *(UShort*)s; n -= 2; } \ |
| 289 | } \ |
| 290 | /* Copy leftovers, or everything if misaligned. */ \ |
| 291 | while (n >= 1) \ |
| 292 | { s -= 1; d -= 1; *(UChar*)d = *(UChar*)s; n -= 1; } \ |
| 293 | \ |
| 294 | } \ |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 295 | } \ |
sewardj | 650cf76 | 2012-08-24 16:42:57 +0000 | [diff] [blame] | 296 | \ |
| 297 | return dst; \ |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 298 | } |
| 299 | |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 300 | MEMCPY(VG_Z_LIBC_SONAME, memcpy) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 301 | #if defined(VGO_linux) |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 302 | MEMCPY(VG_Z_LD_SO_1, memcpy) /* ld.so.1 */ |
| 303 | MEMCPY(VG_Z_LD64_SO_1, memcpy) /* ld64.so.1 */ |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 304 | #endif |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 305 | |
| 306 | |
sewardj | dda0df8 | 2008-10-21 23:11:38 +0000 | [diff] [blame] | 307 | /* Copy SRC to DEST, returning the address of the terminating '\0' in |
| 308 | DEST. (minor variant of strcpy) */ |
| 309 | #define STPCPY(soname, fnname) \ |
| 310 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) ( char* dst, const char* src ); \ |
| 311 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) ( char* dst, const char* src ) \ |
| 312 | { \ |
| 313 | while (*src) *dst++ = *src++; \ |
| 314 | *dst = 0; \ |
| 315 | \ |
| 316 | return dst; \ |
| 317 | } |
| 318 | |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 319 | STPCPY(VG_Z_LIBC_SONAME, stpcpy) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 320 | #if defined(VGO_linux) |
njn | e615466 | 2009-02-10 04:23:41 +0000 | [diff] [blame] | 321 | STPCPY(VG_Z_LD_LINUX_SO_2, stpcpy) |
| 322 | STPCPY(VG_Z_LD_LINUX_X86_64_SO_2, stpcpy) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 323 | #endif |
sewardj | dda0df8 | 2008-10-21 23:11:38 +0000 | [diff] [blame] | 324 | |
| 325 | |
sewardj | da387f2 | 2010-02-15 09:57:49 +0000 | [diff] [blame] | 326 | /* Find the first occurrence of C in S. */ |
| 327 | #define GLIBC232_RAWMEMCHR(soname, fnname) \ |
| 328 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) (const char* s, int c_in); \ |
| 329 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) (const char* s, int c_in) \ |
| 330 | { \ |
| 331 | unsigned char c = (unsigned char) c_in; \ |
| 332 | unsigned char* char_ptr = (unsigned char *)s; \ |
| 333 | while (1) { \ |
| 334 | if (*char_ptr == c) return char_ptr; \ |
| 335 | char_ptr++; \ |
| 336 | } \ |
| 337 | } |
| 338 | |
| 339 | GLIBC232_RAWMEMCHR(VG_Z_LIBC_SONAME, rawmemchr) |
| 340 | #if defined (VGO_linux) |
| 341 | GLIBC232_RAWMEMCHR(VG_Z_LIBC_SONAME, __GI___rawmemchr) |
| 342 | #endif |
| 343 | |
| 344 | |
sewardj | adf9e4d | 2010-08-20 18:25:15 +0000 | [diff] [blame] | 345 | #define STRSTR(soname, fnname) \ |
| 346 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 347 | (void* haystack, void* needle); \ |
| 348 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 349 | (void* haystack, void* needle) \ |
| 350 | { \ |
| 351 | UChar* h = (UChar*)haystack; \ |
| 352 | UChar* n = (UChar*)needle; \ |
| 353 | \ |
| 354 | /* find the length of n, not including terminating zero */ \ |
| 355 | UWord nlen = 0; \ |
| 356 | while (n[nlen]) nlen++; \ |
| 357 | \ |
| 358 | /* if n is the empty string, match immediately. */ \ |
| 359 | if (nlen == 0) return h; \ |
| 360 | \ |
| 361 | /* assert(nlen >= 1); */ \ |
| 362 | UChar n0 = n[0]; \ |
| 363 | \ |
| 364 | while (1) { \ |
| 365 | UChar hh = *h; \ |
| 366 | if (hh == 0) return NULL; \ |
| 367 | if (hh != n0) { h++; continue; } \ |
| 368 | \ |
| 369 | UWord i; \ |
| 370 | for (i = 0; i < nlen; i++) { \ |
| 371 | if (n[i] != h[i]) \ |
| 372 | break; \ |
| 373 | } \ |
| 374 | /* assert(i >= 0 && i <= nlen); */ \ |
| 375 | if (i == nlen) \ |
| 376 | return h; \ |
| 377 | \ |
| 378 | h++; \ |
| 379 | } \ |
| 380 | } |
| 381 | |
| 382 | #if defined(VGO_linux) |
| 383 | STRSTR(VG_Z_LIBC_SONAME, strstr) |
| 384 | #endif |
| 385 | |
| 386 | |
sewardj | 5446faa | 2010-08-21 09:04:38 +0000 | [diff] [blame] | 387 | #define STRPBRK(soname, fnname) \ |
| 388 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 389 | (void* sV, void* acceptV); \ |
| 390 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 391 | (void* sV, void* acceptV) \ |
| 392 | { \ |
| 393 | UChar* s = (UChar*)sV; \ |
| 394 | UChar* accept = (UChar*)acceptV; \ |
| 395 | \ |
| 396 | /* find the length of 'accept', not including terminating zero */ \ |
| 397 | UWord nacc = 0; \ |
| 398 | while (accept[nacc]) nacc++; \ |
| 399 | \ |
| 400 | /* if n is the empty string, fail immediately. */ \ |
| 401 | if (nacc == 0) return NULL; \ |
| 402 | \ |
| 403 | /* assert(nacc >= 1); */ \ |
| 404 | while (1) { \ |
| 405 | UWord i; \ |
| 406 | UChar sc = *s; \ |
| 407 | if (sc == 0) \ |
| 408 | break; \ |
| 409 | for (i = 0; i < nacc; i++) { \ |
| 410 | if (sc == accept[i]) \ |
| 411 | return s; \ |
| 412 | } \ |
| 413 | s++; \ |
| 414 | } \ |
| 415 | \ |
| 416 | return NULL; \ |
| 417 | } |
| 418 | |
| 419 | #if defined(VGO_linux) |
| 420 | STRPBRK(VG_Z_LIBC_SONAME, strpbrk) |
| 421 | #endif |
| 422 | |
| 423 | |
sewardj | 024598e | 2008-09-18 14:43:05 +0000 | [diff] [blame] | 424 | /*--------------------------------------------------------------------*/ |
| 425 | /*--- end pc_intercepts.c ---*/ |
| 426 | /*--------------------------------------------------------------------*/ |