bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Replacements for strcpy(), memcpy() et al, which run on the ---*/ |
| 4 | /*--- simulated CPU. ---*/ |
philippe | f2a68aa | 2014-07-16 21:16:10 +0000 | [diff] [blame] | 5 | /*--- vg_replace_strmem.c ---*/ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 6 | /*--------------------------------------------------------------------*/ |
| 7 | |
| 8 | /* |
| 9 | This file is part of Valgrind. |
| 10 | |
sewardj | b3a1e4b | 2015-08-21 11:32:26 +0000 | [diff] [blame] | 11 | Copyright (C) 2000-2015 Julian Seward |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 12 | jseward@acm.org |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or |
| 15 | modify it under the terms of the GNU General Public License as |
| 16 | published by the Free Software Foundation; either version 2 of the |
| 17 | License, or (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, but |
| 20 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 22 | General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 27 | 02111-1307, USA. |
| 28 | |
| 29 | The GNU General Public License is contained in the file COPYING. |
| 30 | */ |
| 31 | |
| 32 | #include "pub_tool_basics.h" |
| 33 | #include "pub_tool_poolalloc.h" |
| 34 | #include "pub_tool_hashtable.h" |
| 35 | #include "pub_tool_redir.h" |
| 36 | #include "pub_tool_tooliface.h" |
| 37 | #include "pub_tool_clreq.h" |
| 38 | |
| 39 | /* --------------------------------------------------------------------- |
| 40 | We have our own versions of these functions for two reasons: |
| 41 | (a) it allows us to do overlap checking |
| 42 | (b) some of the normal versions are hyper-optimised, which fools |
| 43 | Memcheck and cause spurious value warnings. Our versions are |
| 44 | simpler. |
| 45 | (c) the glibc SSE-variants can read past the end of the input data |
| 46 | ranges. This can cause false-positive Memcheck / Helgrind / DRD |
| 47 | reports. |
| 48 | |
| 49 | Note that overenthusiastic use of PLT bypassing by the glibc people also |
| 50 | means that we need to patch multiple versions of some of the functions to |
| 51 | our own implementations. |
| 52 | |
| 53 | THEY RUN ON THE SIMD CPU! |
| 54 | ------------------------------------------------------------------ */ |
| 55 | |
| 56 | /* Assignment of behavioural equivalence class tags: 2NNNP is intended |
| 57 | to be reserved for str/mem intercepts. Current usage: |
| 58 | |
| 59 | 20010 STRRCHR |
| 60 | 20020 STRCHR |
| 61 | 20030 STRCAT |
| 62 | 20040 STRNCAT |
| 63 | 20050 STRLCAT |
| 64 | 20060 STRNLEN |
| 65 | 20070 STRLEN |
| 66 | 20080 STRCPY |
| 67 | 20090 STRNCPY |
| 68 | 20100 STRLCPY |
| 69 | 20110 STRNCMP |
| 70 | 20120 STRCASECMP |
| 71 | 20130 STRNCASECMP |
| 72 | 20140 STRCASECMP_L |
| 73 | 20150 STRNCASECMP_L |
| 74 | 20160 STRCMP |
| 75 | 20170 MEMCHR |
| 76 | |
| 77 | 20180 MEMCPY if there's a conflict between memcpy and |
| 78 | 20181 MEMMOVE memmove, prefer memmove |
| 79 | |
| 80 | 20190 MEMCMP |
| 81 | 20200 STPCPY |
| 82 | 20210 MEMSET |
| 83 | 2022P unused (was previously MEMMOVE) |
| 84 | 20230 BCOPY |
| 85 | 20240 GLIBC25___MEMMOVE_CHK |
| 86 | 20250 GLIBC232_STRCHRNUL |
| 87 | 20260 GLIBC232_RAWMEMCHR |
| 88 | 20270 GLIBC25___STRCPY_CHK |
| 89 | 20280 GLIBC25___STPCPY_CHK |
| 90 | 20290 GLIBC25_MEMPCPY |
| 91 | 20300 GLIBC26___MEMCPY_CHK |
| 92 | 20310 STRSTR |
| 93 | 20320 STRPBRK |
| 94 | 20330 STRCSPN |
| 95 | 20340 STRSPN |
| 96 | 20350 STRCASESTR |
| 97 | 20360 MEMRCHR |
| 98 | 20370 WCSLEN |
| 99 | 20380 WCSCMP |
| 100 | 20390 WCSCPY |
| 101 | 20400 WCSCHR |
| 102 | 20410 WCSRCHR |
| 103 | 20420 STPNCPY |
| 104 | */ |
| 105 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 106 | #if defined(VGO_solaris) |
| 107 | /* |
| 108 | Detour functions in the libc and the runtime linker. If a function isn't |
| 109 | much optimized (and no overlap checking is necessary) then redir the |
| 110 | function only in the libc. This way we can keep stacktraces in the tests |
| 111 | consistent. |
| 112 | */ |
| 113 | #endif |
| 114 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 115 | |
| 116 | /* Figure out if [dst .. dst+dstlen-1] overlaps with |
| 117 | [src .. src+srclen-1]. |
| 118 | We assume that the address ranges do not wrap around |
| 119 | (which is safe since on Linux addresses >= 0xC0000000 |
| 120 | are not accessible and the program will segfault in this |
| 121 | circumstance, presumably). |
| 122 | */ |
| 123 | static inline |
| 124 | Bool is_overlap ( void* dst, const void* src, SizeT dstlen, SizeT srclen ) |
| 125 | { |
| 126 | Addr loS, hiS, loD, hiD; |
| 127 | |
| 128 | if (dstlen == 0 || srclen == 0) |
| 129 | return False; |
| 130 | |
| 131 | loS = (Addr)src; |
| 132 | loD = (Addr)dst; |
| 133 | hiS = loS + srclen - 1; |
| 134 | hiD = loD + dstlen - 1; |
| 135 | |
| 136 | /* So figure out if [loS .. hiS] overlaps with [loD .. hiD]. */ |
| 137 | if (loS < loD) { |
| 138 | return !(hiS < loD); |
| 139 | } |
| 140 | else if (loD < loS) { |
| 141 | return !(hiD < loS); |
| 142 | } |
| 143 | else { |
| 144 | /* They start at same place. Since we know neither of them has |
| 145 | zero length, they must overlap. */ |
| 146 | return True; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | |
| 151 | /* Call here to exit if we can't continue. On Android we can't call |
| 152 | _exit for some reason, so we have to blunt-instrument it. */ |
| 153 | __attribute__ ((__noreturn__)) |
| 154 | static inline void my_exit ( int x ) |
| 155 | { |
dejanj | 9c6b05d | 2013-12-27 09:06:55 +0000 | [diff] [blame] | 156 | # if defined(VGPV_arm_linux_android) || defined(VGPV_mips32_linux_android) \ |
sewardj | 26ed419 | 2014-11-04 17:44:21 +0000 | [diff] [blame] | 157 | || defined(VGPV_arm64_linux_android) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 158 | __asm__ __volatile__(".word 0xFFFFFFFF"); |
| 159 | while (1) {} |
| 160 | # elif defined(VGPV_x86_linux_android) |
| 161 | __asm__ __volatile__("ud2"); |
| 162 | while (1) {} |
| 163 | # else |
| 164 | extern __attribute__ ((__noreturn__)) void _exit(int status); |
| 165 | _exit(x); |
| 166 | # endif |
| 167 | } |
| 168 | |
| 169 | |
| 170 | // This is a macro rather than a function because we don't want to have an |
| 171 | // extra function in the stack trace. |
| 172 | #ifndef RECORD_OVERLAP_ERROR |
| 173 | #define RECORD_OVERLAP_ERROR(s, src, dst, len) do { } while (0) |
| 174 | #endif |
| 175 | #ifndef VALGRIND_CHECK_VALUE_IS_DEFINED |
| 176 | #define VALGRIND_CHECK_VALUE_IS_DEFINED(__lvalue) 1 |
| 177 | #endif |
| 178 | |
| 179 | |
| 180 | /*---------------------- strrchr ----------------------*/ |
| 181 | |
| 182 | #define STRRCHR(soname, fnname) \ |
| 183 | char* VG_REPLACE_FUNCTION_EZU(20010,soname,fnname)( const char* s, int c ); \ |
| 184 | char* VG_REPLACE_FUNCTION_EZU(20010,soname,fnname)( const char* s, int c ) \ |
| 185 | { \ |
| 186 | HChar ch = (HChar)c; \ |
| 187 | const HChar* p = s; \ |
| 188 | const HChar* last = NULL; \ |
| 189 | while (True) { \ |
| 190 | if (*p == ch) last = p; \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 191 | if (*p == 0) return CONST_CAST(HChar *,last); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 192 | p++; \ |
| 193 | } \ |
| 194 | } |
| 195 | |
| 196 | // Apparently rindex() is the same thing as strrchr() |
| 197 | #if defined(VGO_linux) |
| 198 | STRRCHR(VG_Z_LIBC_SONAME, strrchr) |
| 199 | STRRCHR(VG_Z_LIBC_SONAME, rindex) |
| 200 | STRRCHR(VG_Z_LIBC_SONAME, __GI_strrchr) |
| 201 | STRRCHR(VG_Z_LIBC_SONAME, __strrchr_sse2) |
| 202 | STRRCHR(VG_Z_LIBC_SONAME, __strrchr_sse2_no_bsf) |
| 203 | STRRCHR(VG_Z_LIBC_SONAME, __strrchr_sse42) |
| 204 | STRRCHR(VG_Z_LD_LINUX_SO_2, rindex) |
dejanj | 9c6b05d | 2013-12-27 09:06:55 +0000 | [diff] [blame] | 205 | #if defined(VGPV_arm_linux_android) || defined(VGPV_x86_linux_android) \ |
| 206 | || defined(VGPV_mips32_linux_android) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 207 | STRRCHR(NONE, __dl_strrchr); /* in /system/bin/linker */ |
| 208 | #endif |
| 209 | |
| 210 | #elif defined(VGO_darwin) |
| 211 | //STRRCHR(VG_Z_LIBC_SONAME, strrchr) |
| 212 | //STRRCHR(VG_Z_LIBC_SONAME, rindex) |
| 213 | //STRRCHR(VG_Z_DYLD, strrchr) |
| 214 | //STRRCHR(VG_Z_DYLD, rindex) |
| 215 | STRRCHR(VG_Z_LIBC_SONAME, strrchr) |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 216 | # if DARWIN_VERS >= DARWIN_10_9 |
sewardj | eb86dda | 2014-10-17 15:07:37 +0000 | [diff] [blame] | 217 | STRRCHR(libsystemZucZddylib, strrchr) |
| 218 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 219 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 220 | #elif defined(VGO_solaris) |
| 221 | STRRCHR(VG_Z_LIBC_SONAME, strrchr) |
| 222 | STRRCHR(VG_Z_LIBC_SONAME, rindex) |
| 223 | STRRCHR(VG_Z_LD_SO_1, strrchr) |
| 224 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 225 | #endif |
| 226 | |
| 227 | |
| 228 | /*---------------------- strchr ----------------------*/ |
| 229 | |
| 230 | #define STRCHR(soname, fnname) \ |
| 231 | char* VG_REPLACE_FUNCTION_EZU(20020,soname,fnname) ( const char* s, int c ); \ |
| 232 | char* VG_REPLACE_FUNCTION_EZU(20020,soname,fnname) ( const char* s, int c ) \ |
| 233 | { \ |
| 234 | HChar ch = (HChar)c ; \ |
| 235 | const HChar* p = s; \ |
| 236 | while (True) { \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 237 | if (*p == ch) return CONST_CAST(HChar *,p); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 238 | if (*p == 0) return NULL; \ |
| 239 | p++; \ |
| 240 | } \ |
| 241 | } |
| 242 | |
| 243 | // Apparently index() is the same thing as strchr() |
| 244 | #if defined(VGO_linux) |
| 245 | STRCHR(VG_Z_LIBC_SONAME, strchr) |
| 246 | STRCHR(VG_Z_LIBC_SONAME, __GI_strchr) |
| 247 | STRCHR(VG_Z_LIBC_SONAME, __strchr_sse2) |
| 248 | STRCHR(VG_Z_LIBC_SONAME, __strchr_sse2_no_bsf) |
| 249 | STRCHR(VG_Z_LIBC_SONAME, index) |
| 250 | # if !defined(VGP_x86_linux) |
| 251 | STRCHR(VG_Z_LD_LINUX_SO_2, strchr) |
| 252 | STRCHR(VG_Z_LD_LINUX_SO_2, index) |
| 253 | STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, strchr) |
| 254 | STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, index) |
| 255 | # endif |
| 256 | |
| 257 | #elif defined(VGO_darwin) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 258 | STRCHR(VG_Z_LIBC_SONAME, strchr) |
sewardj | c3e09f6 | 2014-06-21 09:40:19 +0000 | [diff] [blame] | 259 | # if DARWIN_VERS == DARWIN_10_9 |
| 260 | STRCHR(libsystemZuplatformZddylib, _platform_strchr) |
| 261 | # endif |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 262 | # if DARWIN_VERS >= DARWIN_10_10 |
rhyskidd | 9951323 | 2015-03-26 10:14:25 +0000 | [diff] [blame] | 263 | /* _platform_strchr$VARIANT$Generic */ |
| 264 | STRCHR(libsystemZuplatformZddylib, _platform_strchr$VARIANT$Generic) |
rhyskidd | e4fcda3 | 2015-08-29 07:42:40 +0000 | [diff] [blame] | 265 | /* _platform_strchr$VARIANT$Haswell */ |
rhyskidd | 366cefb | 2015-05-14 13:03:08 +0000 | [diff] [blame] | 266 | STRCHR(libsystemZuplatformZddylib, _platform_strchr$VARIANT$Haswell) |
rhyskidd | 9951323 | 2015-03-26 10:14:25 +0000 | [diff] [blame] | 267 | # endif |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 268 | |
| 269 | #elif defined(VGO_solaris) |
| 270 | STRCHR(VG_Z_LIBC_SONAME, strchr) |
| 271 | STRCHR(VG_Z_LIBC_SONAME, index) |
| 272 | STRCHR(VG_Z_LD_SO_1, strchr) |
| 273 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 274 | #endif |
| 275 | |
| 276 | |
| 277 | /*---------------------- strcat ----------------------*/ |
| 278 | |
| 279 | #define STRCAT(soname, fnname) \ |
| 280 | char* VG_REPLACE_FUNCTION_EZU(20030,soname,fnname) \ |
| 281 | ( char* dst, const char* src ); \ |
| 282 | char* VG_REPLACE_FUNCTION_EZU(20030,soname,fnname) \ |
| 283 | ( char* dst, const char* src ) \ |
| 284 | { \ |
| 285 | const HChar* src_orig = src; \ |
| 286 | HChar* dst_orig = dst; \ |
| 287 | while (*dst) dst++; \ |
| 288 | while (*src) *dst++ = *src++; \ |
| 289 | *dst = 0; \ |
| 290 | \ |
| 291 | /* This is a bit redundant, I think; any overlap and the strcat will */ \ |
| 292 | /* go forever... or until a seg fault occurs. */ \ |
| 293 | if (is_overlap(dst_orig, \ |
| 294 | src_orig, \ |
| 295 | (Addr)dst-(Addr)dst_orig+1, \ |
| 296 | (Addr)src-(Addr)src_orig+1)) \ |
| 297 | RECORD_OVERLAP_ERROR("strcat", dst_orig, src_orig, 0); \ |
| 298 | \ |
| 299 | return dst_orig; \ |
| 300 | } |
| 301 | |
| 302 | #if defined(VGO_linux) |
| 303 | STRCAT(VG_Z_LIBC_SONAME, strcat) |
| 304 | STRCAT(VG_Z_LIBC_SONAME, __GI_strcat) |
| 305 | |
| 306 | #elif defined(VGO_darwin) |
| 307 | //STRCAT(VG_Z_LIBC_SONAME, strcat) |
| 308 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 309 | #elif defined(VGO_solaris) |
| 310 | STRCAT(VG_Z_LIBC_SONAME, strcat) |
| 311 | STRCAT(VG_Z_LD_SO_1, strcat) |
| 312 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 313 | #endif |
| 314 | |
| 315 | |
| 316 | /*---------------------- strncat ----------------------*/ |
| 317 | |
| 318 | #define STRNCAT(soname, fnname) \ |
| 319 | char* VG_REPLACE_FUNCTION_EZU(20040,soname,fnname) \ |
| 320 | ( char* dst, const char* src, SizeT n ); \ |
| 321 | char* VG_REPLACE_FUNCTION_EZU(20040,soname,fnname) \ |
| 322 | ( char* dst, const char* src, SizeT n ) \ |
| 323 | { \ |
| 324 | const HChar* src_orig = src; \ |
| 325 | HChar* dst_orig = dst; \ |
| 326 | SizeT m = 0; \ |
| 327 | \ |
| 328 | while (*dst) dst++; \ |
| 329 | while (m < n && *src) { m++; *dst++ = *src++; } /* concat <= n chars */ \ |
| 330 | *dst = 0; /* always add null */ \ |
| 331 | \ |
| 332 | /* This checks for overlap after copying, unavoidable without */ \ |
| 333 | /* pre-counting lengths... should be ok */ \ |
| 334 | if (is_overlap(dst_orig, \ |
| 335 | src_orig, \ |
| 336 | (Addr)dst-(Addr)dst_orig+1, \ |
| 337 | (Addr)src-(Addr)src_orig+1)) \ |
| 338 | RECORD_OVERLAP_ERROR("strncat", dst_orig, src_orig, n); \ |
| 339 | \ |
| 340 | return dst_orig; \ |
| 341 | } |
| 342 | |
| 343 | #if defined(VGO_linux) |
| 344 | STRNCAT(VG_Z_LIBC_SONAME, strncat) |
| 345 | |
| 346 | #elif defined(VGO_darwin) |
| 347 | //STRNCAT(VG_Z_LIBC_SONAME, strncat) |
| 348 | //STRNCAT(VG_Z_DYLD, strncat) |
| 349 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 350 | #elif defined(VGO_solaris) |
| 351 | STRNCAT(VG_Z_LIBC_SONAME, strncat) |
| 352 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 353 | #endif |
| 354 | |
| 355 | |
| 356 | /*---------------------- strlcat ----------------------*/ |
| 357 | |
| 358 | /* Append src to dst. n is the size of dst's buffer. dst is guaranteed |
| 359 | to be nul-terminated after the copy, unless n <= strlen(dst_orig). |
| 360 | Returns min(n, strlen(dst_orig)) + strlen(src_orig). |
| 361 | Truncation occurred if retval >= n. |
| 362 | */ |
| 363 | #define STRLCAT(soname, fnname) \ |
| 364 | SizeT VG_REPLACE_FUNCTION_EZU(20050,soname,fnname) \ |
| 365 | ( char* dst, const char* src, SizeT n ); \ |
| 366 | SizeT VG_REPLACE_FUNCTION_EZU(20050,soname,fnname) \ |
| 367 | ( char* dst, const char* src, SizeT n ) \ |
| 368 | { \ |
| 369 | const HChar* src_orig = src; \ |
| 370 | HChar* dst_orig = dst; \ |
| 371 | SizeT m = 0; \ |
| 372 | \ |
| 373 | while (m < n && *dst) { m++; dst++; } \ |
| 374 | if (m < n) { \ |
| 375 | /* Fill as far as dst_orig[n-2], then nul-terminate. */ \ |
| 376 | while (m < n-1 && *src) { m++; *dst++ = *src++; } \ |
| 377 | *dst = 0; \ |
| 378 | } else { \ |
| 379 | /* No space to copy anything to dst. m == n */ \ |
| 380 | } \ |
| 381 | /* Finish counting min(n, strlen(dst_orig)) + strlen(src_orig) */ \ |
| 382 | while (*src) { m++; src++; } \ |
| 383 | /* This checks for overlap after copying, unavoidable without */ \ |
| 384 | /* pre-counting lengths... should be ok */ \ |
| 385 | if (is_overlap(dst_orig, \ |
| 386 | src_orig, \ |
| 387 | (Addr)dst-(Addr)dst_orig+1, \ |
| 388 | (Addr)src-(Addr)src_orig+1)) \ |
| 389 | RECORD_OVERLAP_ERROR("strlcat", dst_orig, src_orig, n); \ |
| 390 | \ |
| 391 | return m; \ |
| 392 | } |
| 393 | |
| 394 | #if defined(VGO_linux) |
| 395 | |
| 396 | #elif defined(VGO_darwin) |
| 397 | //STRLCAT(VG_Z_LIBC_SONAME, strlcat) |
| 398 | //STRLCAT(VG_Z_DYLD, strlcat) |
| 399 | STRLCAT(VG_Z_LIBC_SONAME, strlcat) |
| 400 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 401 | #elif defined(VGO_solaris) |
| 402 | STRLCAT(VG_Z_LIBC_SONAME, strlcat) |
| 403 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 404 | #endif |
| 405 | |
| 406 | |
| 407 | /*---------------------- strnlen ----------------------*/ |
| 408 | |
| 409 | #define STRNLEN(soname, fnname) \ |
| 410 | SizeT VG_REPLACE_FUNCTION_EZU(20060,soname,fnname) \ |
| 411 | ( const char* str, SizeT n ); \ |
| 412 | SizeT VG_REPLACE_FUNCTION_EZU(20060,soname,fnname) \ |
| 413 | ( const char* str, SizeT n ) \ |
| 414 | { \ |
| 415 | SizeT i = 0; \ |
| 416 | while (i < n && str[i] != 0) i++; \ |
| 417 | return i; \ |
| 418 | } |
| 419 | |
| 420 | #if defined(VGO_linux) |
| 421 | STRNLEN(VG_Z_LIBC_SONAME, strnlen) |
| 422 | STRNLEN(VG_Z_LIBC_SONAME, __GI_strnlen) |
| 423 | |
| 424 | #elif defined(VGO_darwin) |
sewardj | aec49a4 | 2014-06-23 16:03:45 +0000 | [diff] [blame] | 425 | # if DARWIN_VERS == DARWIN_10_9 |
| 426 | STRNLEN(libsystemZucZddylib, strnlen) |
| 427 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 428 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 429 | #elif defined(VGO_solaris) |
| 430 | STRNLEN(VG_Z_LIBC_SONAME, strnlen) |
| 431 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 432 | #endif |
| 433 | |
| 434 | |
| 435 | /*---------------------- strlen ----------------------*/ |
| 436 | |
| 437 | // Note that this replacement often doesn't get used because gcc inlines |
| 438 | // calls to strlen() with its own built-in version. This can be very |
| 439 | // confusing if you aren't expecting it. Other small functions in |
| 440 | // this file may also be inline by gcc. |
| 441 | |
| 442 | #define STRLEN(soname, fnname) \ |
| 443 | SizeT VG_REPLACE_FUNCTION_EZU(20070,soname,fnname) \ |
| 444 | ( const char* str ); \ |
| 445 | SizeT VG_REPLACE_FUNCTION_EZU(20070,soname,fnname) \ |
| 446 | ( const char* str ) \ |
| 447 | { \ |
| 448 | SizeT i = 0; \ |
| 449 | while (str[i] != 0) i++; \ |
| 450 | return i; \ |
| 451 | } |
| 452 | |
| 453 | #if defined(VGO_linux) |
| 454 | STRLEN(VG_Z_LIBC_SONAME, strlen) |
| 455 | STRLEN(VG_Z_LIBC_SONAME, __GI_strlen) |
| 456 | STRLEN(VG_Z_LIBC_SONAME, __strlen_sse2) |
| 457 | STRLEN(VG_Z_LIBC_SONAME, __strlen_sse2_no_bsf) |
| 458 | STRLEN(VG_Z_LIBC_SONAME, __strlen_sse42) |
| 459 | STRLEN(VG_Z_LD_LINUX_SO_2, strlen) |
| 460 | STRLEN(VG_Z_LD_LINUX_X86_64_SO_2, strlen) |
sewardj | 26ed419 | 2014-11-04 17:44:21 +0000 | [diff] [blame] | 461 | # if defined(VGPV_arm_linux_android) \ |
| 462 | || defined(VGPV_x86_linux_android) \ |
dejanj | 9c6b05d | 2013-12-27 09:06:55 +0000 | [diff] [blame] | 463 | || defined(VGPV_mips32_linux_android) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 464 | STRLEN(NONE, __dl_strlen); /* in /system/bin/linker */ |
| 465 | # endif |
| 466 | |
| 467 | #elif defined(VGO_darwin) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 468 | STRLEN(VG_Z_LIBC_SONAME, strlen) |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 469 | # if DARWIN_VERS >= DARWIN_10_9 |
sewardj | c3e09f6 | 2014-06-21 09:40:19 +0000 | [diff] [blame] | 470 | STRLEN(libsystemZucZddylib, strlen) |
| 471 | # endif |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 472 | |
| 473 | #elif defined(VGO_solaris) |
| 474 | STRLEN(VG_Z_LIBC_SONAME, strlen) |
| 475 | STRLEN(VG_Z_LD_SO_1, strlen) |
| 476 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 477 | #endif |
| 478 | |
| 479 | |
| 480 | /*---------------------- strcpy ----------------------*/ |
| 481 | |
| 482 | #define STRCPY(soname, fnname) \ |
| 483 | char* VG_REPLACE_FUNCTION_EZU(20080,soname,fnname) \ |
| 484 | ( char* dst, const char* src ); \ |
| 485 | char* VG_REPLACE_FUNCTION_EZU(20080,soname,fnname) \ |
| 486 | ( char* dst, const char* src ) \ |
| 487 | { \ |
| 488 | const HChar* src_orig = src; \ |
| 489 | HChar* dst_orig = dst; \ |
| 490 | \ |
| 491 | while (*src) *dst++ = *src++; \ |
| 492 | *dst = 0; \ |
| 493 | \ |
| 494 | /* This checks for overlap after copying, unavoidable without */ \ |
| 495 | /* pre-counting length... should be ok */ \ |
| 496 | if (is_overlap(dst_orig, \ |
| 497 | src_orig, \ |
| 498 | (Addr)dst-(Addr)dst_orig+1, \ |
| 499 | (Addr)src-(Addr)src_orig+1)) \ |
| 500 | RECORD_OVERLAP_ERROR("strcpy", dst_orig, src_orig, 0); \ |
| 501 | \ |
| 502 | return dst_orig; \ |
| 503 | } |
| 504 | |
| 505 | #if defined(VGO_linux) |
| 506 | STRCPY(VG_Z_LIBC_SONAME, strcpy) |
| 507 | STRCPY(VG_Z_LIBC_SONAME, __GI_strcpy) |
| 508 | |
| 509 | #elif defined(VGO_darwin) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 510 | STRCPY(VG_Z_LIBC_SONAME, strcpy) |
sewardj | aec49a4 | 2014-06-23 16:03:45 +0000 | [diff] [blame] | 511 | # if DARWIN_VERS == DARWIN_10_9 |
| 512 | STRCPY(libsystemZucZddylib, strcpy) |
| 513 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 514 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 515 | #elif defined(VGO_solaris) |
| 516 | STRCPY(VG_Z_LIBC_SONAME, strcpy) |
| 517 | STRCPY(VG_Z_LD_SO_1, strcpy) |
| 518 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 519 | #endif |
| 520 | |
| 521 | |
| 522 | /*---------------------- strncpy ----------------------*/ |
| 523 | |
| 524 | #define STRNCPY(soname, fnname) \ |
| 525 | char* VG_REPLACE_FUNCTION_EZU(20090,soname,fnname) \ |
| 526 | ( char* dst, const char* src, SizeT n ); \ |
| 527 | char* VG_REPLACE_FUNCTION_EZU(20090,soname,fnname) \ |
| 528 | ( char* dst, const char* src, SizeT n ) \ |
| 529 | { \ |
| 530 | const HChar* src_orig = src; \ |
| 531 | HChar* dst_orig = dst; \ |
| 532 | SizeT m = 0; \ |
| 533 | \ |
| 534 | while (m < n && *src) { m++; *dst++ = *src++; } \ |
| 535 | /* Check for overlap after copying; all n bytes of dst are relevant, */ \ |
| 536 | /* but only m+1 bytes of src if terminator was found */ \ |
| 537 | if (is_overlap(dst_orig, src_orig, n, (m < n) ? m+1 : n)) \ |
| 538 | RECORD_OVERLAP_ERROR("strncpy", dst, src, n); \ |
| 539 | while (m++ < n) *dst++ = 0; /* must pad remainder with nulls */ \ |
| 540 | \ |
| 541 | return dst_orig; \ |
| 542 | } |
| 543 | |
| 544 | #if defined(VGO_linux) |
| 545 | STRNCPY(VG_Z_LIBC_SONAME, strncpy) |
| 546 | STRNCPY(VG_Z_LIBC_SONAME, __GI_strncpy) |
| 547 | STRNCPY(VG_Z_LIBC_SONAME, __strncpy_sse2) |
| 548 | STRNCPY(VG_Z_LIBC_SONAME, __strncpy_sse2_unaligned) |
| 549 | |
| 550 | #elif defined(VGO_darwin) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 551 | STRNCPY(VG_Z_LIBC_SONAME, strncpy) |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 552 | # if DARWIN_VERS >= DARWIN_10_9 |
sewardj | aec49a4 | 2014-06-23 16:03:45 +0000 | [diff] [blame] | 553 | STRNCPY(libsystemZucZddylib, strncpy) |
| 554 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 555 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 556 | #elif defined(VGO_solaris) |
| 557 | STRNCPY(VG_Z_LIBC_SONAME, strncpy) |
| 558 | STRNCPY(VG_Z_LD_SO_1, strncpy) |
| 559 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 560 | #endif |
| 561 | |
| 562 | |
| 563 | /*---------------------- strlcpy ----------------------*/ |
| 564 | |
| 565 | /* Copy up to n-1 bytes from src to dst. Then nul-terminate dst if n > 0. |
| 566 | Returns strlen(src). Does not zero-fill the remainder of dst. */ |
| 567 | #define STRLCPY(soname, fnname) \ |
| 568 | SizeT VG_REPLACE_FUNCTION_EZU(20100,soname,fnname) \ |
| 569 | ( char* dst, const char* src, SizeT n ); \ |
| 570 | SizeT VG_REPLACE_FUNCTION_EZU(20100,soname,fnname) \ |
| 571 | ( char* dst, const char* src, SizeT n ) \ |
| 572 | { \ |
| 573 | const HChar* src_orig = src; \ |
| 574 | HChar* dst_orig = dst; \ |
| 575 | SizeT m = 0; \ |
| 576 | \ |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 577 | STRLCPY_CHECK_FOR_DSTSIZE_ZERO \ |
| 578 | \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 579 | while (m < n-1 && *src) { m++; *dst++ = *src++; } \ |
| 580 | /* m non-nul bytes have now been copied, and m <= n-1. */ \ |
| 581 | /* Check for overlap after copying; all n bytes of dst are relevant, */ \ |
| 582 | /* but only m+1 bytes of src if terminator was found */ \ |
| 583 | if (is_overlap(dst_orig, src_orig, n, (m < n) ? m+1 : n)) \ |
| 584 | RECORD_OVERLAP_ERROR("strlcpy", dst, src, n); \ |
| 585 | /* Nul-terminate dst. */ \ |
| 586 | if (n > 0) *dst = 0; \ |
| 587 | /* Finish counting strlen(src). */ \ |
| 588 | while (*src) src++; \ |
| 589 | return src - src_orig; \ |
| 590 | } |
| 591 | |
| 592 | #if defined(VGO_linux) |
| 593 | |
dejanj | 9c6b05d | 2013-12-27 09:06:55 +0000 | [diff] [blame] | 594 | #if defined(VGPV_arm_linux_android) || defined(VGPV_x86_linux_android) \ |
| 595 | || defined(VGPV_mips32_linux_android) |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 596 | #define STRLCPY_CHECK_FOR_DSTSIZE_ZERO |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 597 | STRLCPY(VG_Z_LIBC_SONAME, strlcpy); |
| 598 | #endif |
| 599 | |
| 600 | #elif defined(VGO_darwin) |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 601 | #define STRLCPY_CHECK_FOR_DSTSIZE_ZERO |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 602 | //STRLCPY(VG_Z_LIBC_SONAME, strlcpy) |
| 603 | //STRLCPY(VG_Z_DYLD, strlcpy) |
| 604 | STRLCPY(VG_Z_LIBC_SONAME, strlcpy) |
| 605 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 606 | #elif defined(VGO_solaris) |
| 607 | /* special case for n == 0 which is undocumented but heavily used */ |
| 608 | #define STRLCPY_CHECK_FOR_DSTSIZE_ZERO \ |
| 609 | if (n == 0) { \ |
| 610 | while (*src) src++; \ |
| 611 | return src - src_orig; \ |
| 612 | } |
| 613 | |
| 614 | STRLCPY(VG_Z_LIBC_SONAME, strlcpy) |
| 615 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 616 | #endif |
| 617 | |
| 618 | |
| 619 | /*---------------------- strncmp ----------------------*/ |
| 620 | |
| 621 | #define STRNCMP(soname, fnname) \ |
| 622 | int VG_REPLACE_FUNCTION_EZU(20110,soname,fnname) \ |
| 623 | ( const char* s1, const char* s2, SizeT nmax ); \ |
| 624 | int VG_REPLACE_FUNCTION_EZU(20110,soname,fnname) \ |
| 625 | ( const char* s1, const char* s2, SizeT nmax ) \ |
| 626 | { \ |
| 627 | SizeT n = 0; \ |
| 628 | while (True) { \ |
| 629 | if (n >= nmax) return 0; \ |
| 630 | if (*s1 == 0 && *s2 == 0) return 0; \ |
| 631 | if (*s1 == 0) return -1; \ |
| 632 | if (*s2 == 0) return 1; \ |
| 633 | \ |
| 634 | if (*(const UChar*)s1 < *(const UChar*)s2) return -1; \ |
| 635 | if (*(const UChar*)s1 > *(const UChar*)s2) return 1; \ |
| 636 | \ |
| 637 | s1++; s2++; n++; \ |
| 638 | } \ |
| 639 | } |
| 640 | |
| 641 | #if defined(VGO_linux) |
| 642 | STRNCMP(VG_Z_LIBC_SONAME, strncmp) |
| 643 | STRNCMP(VG_Z_LIBC_SONAME, __GI_strncmp) |
| 644 | STRNCMP(VG_Z_LIBC_SONAME, __strncmp_sse2) |
| 645 | STRNCMP(VG_Z_LIBC_SONAME, __strncmp_sse42) |
| 646 | |
| 647 | #elif defined(VGO_darwin) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 648 | STRNCMP(VG_Z_LIBC_SONAME, strncmp) |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 649 | # if DARWIN_VERS >= DARWIN_10_9 |
sewardj | 798e95b | 2014-06-25 11:17:46 +0000 | [diff] [blame] | 650 | STRNCMP(libsystemZuplatformZddylib, _platform_strncmp) |
| 651 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 652 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 653 | #elif defined(VGO_solaris) |
| 654 | STRNCMP(VG_Z_LIBC_SONAME, strncmp) |
| 655 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 656 | #endif |
| 657 | |
| 658 | |
| 659 | /*---------------------- strcasecmp ----------------------*/ |
| 660 | |
| 661 | #define STRCASECMP(soname, fnname) \ |
| 662 | int VG_REPLACE_FUNCTION_EZU(20120,soname,fnname) \ |
| 663 | ( const char* s1, const char* s2 ); \ |
| 664 | int VG_REPLACE_FUNCTION_EZU(20120,soname,fnname) \ |
| 665 | ( const char* s1, const char* s2 ) \ |
| 666 | { \ |
| 667 | extern int tolower(int); \ |
| 668 | register UChar c1; \ |
| 669 | register UChar c2; \ |
| 670 | while (True) { \ |
| 671 | c1 = tolower(*(const UChar *)s1); \ |
| 672 | c2 = tolower(*(const UChar *)s2); \ |
| 673 | if (c1 != c2) break; \ |
| 674 | if (c1 == 0) break; \ |
| 675 | s1++; s2++; \ |
| 676 | } \ |
| 677 | if ((UChar)c1 < (UChar)c2) return -1; \ |
| 678 | if ((UChar)c1 > (UChar)c2) return 1; \ |
| 679 | return 0; \ |
| 680 | } |
| 681 | |
| 682 | #if defined(VGO_linux) |
sewardj | 26ed419 | 2014-11-04 17:44:21 +0000 | [diff] [blame] | 683 | # if !defined(VGPV_arm_linux_android) \ |
| 684 | && !defined(VGPV_x86_linux_android) \ |
| 685 | && !defined(VGPV_mips32_linux_android) \ |
| 686 | && !defined(VGPV_arm64_linux_android) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 687 | STRCASECMP(VG_Z_LIBC_SONAME, strcasecmp) |
| 688 | STRCASECMP(VG_Z_LIBC_SONAME, __GI_strcasecmp) |
| 689 | # endif |
| 690 | |
| 691 | #elif defined(VGO_darwin) |
| 692 | //STRCASECMP(VG_Z_LIBC_SONAME, strcasecmp) |
| 693 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 694 | #elif defined(VGO_solaris) |
| 695 | STRCASECMP(VG_Z_LIBC_SONAME, strcasecmp) |
| 696 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 697 | #endif |
| 698 | |
| 699 | |
| 700 | /*---------------------- strncasecmp ----------------------*/ |
| 701 | |
| 702 | #define STRNCASECMP(soname, fnname) \ |
| 703 | int VG_REPLACE_FUNCTION_EZU(20130,soname,fnname) \ |
| 704 | ( const char* s1, const char* s2, SizeT nmax ); \ |
| 705 | int VG_REPLACE_FUNCTION_EZU(20130,soname,fnname) \ |
| 706 | ( const char* s1, const char* s2, SizeT nmax ) \ |
| 707 | { \ |
| 708 | extern int tolower(int); \ |
| 709 | SizeT n = 0; \ |
| 710 | while (True) { \ |
| 711 | if (n >= nmax) return 0; \ |
| 712 | if (*s1 == 0 && *s2 == 0) return 0; \ |
| 713 | if (*s1 == 0) return -1; \ |
| 714 | if (*s2 == 0) return 1; \ |
| 715 | \ |
| 716 | if (tolower(*(const UChar *)s1) \ |
| 717 | < tolower(*(const UChar*)s2)) return -1; \ |
| 718 | if (tolower(*(const UChar *)s1) \ |
| 719 | > tolower(*(const UChar *)s2)) return 1; \ |
| 720 | \ |
| 721 | s1++; s2++; n++; \ |
| 722 | } \ |
| 723 | } |
| 724 | |
| 725 | #if defined(VGO_linux) |
sewardj | 26ed419 | 2014-11-04 17:44:21 +0000 | [diff] [blame] | 726 | # if !defined(VGPV_arm_linux_android) \ |
| 727 | && !defined(VGPV_x86_linux_android) \ |
| 728 | && !defined(VGPV_mips32_linux_android) \ |
| 729 | && !defined(VGPV_arm64_linux_android) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 730 | STRNCASECMP(VG_Z_LIBC_SONAME, strncasecmp) |
| 731 | STRNCASECMP(VG_Z_LIBC_SONAME, __GI_strncasecmp) |
| 732 | # endif |
| 733 | |
| 734 | #elif defined(VGO_darwin) |
| 735 | //STRNCASECMP(VG_Z_LIBC_SONAME, strncasecmp) |
| 736 | //STRNCASECMP(VG_Z_DYLD, strncasecmp) |
| 737 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 738 | #elif defined(VGO_solaris) |
| 739 | STRNCASECMP(VG_Z_LIBC_SONAME, strncasecmp) |
| 740 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 741 | #endif |
| 742 | |
| 743 | |
| 744 | /*---------------------- strcasecmp_l ----------------------*/ |
| 745 | |
| 746 | #define STRCASECMP_L(soname, fnname) \ |
| 747 | int VG_REPLACE_FUNCTION_EZU(20140,soname,fnname) \ |
| 748 | ( const char* s1, const char* s2, void* locale ); \ |
| 749 | int VG_REPLACE_FUNCTION_EZU(20140,soname,fnname) \ |
| 750 | ( const char* s1, const char* s2, void* locale ) \ |
| 751 | { \ |
| 752 | extern int tolower_l(int, void*) __attribute__((weak)); \ |
| 753 | register UChar c1; \ |
| 754 | register UChar c2; \ |
| 755 | while (True) { \ |
| 756 | c1 = tolower_l(*(const UChar *)s1, locale); \ |
| 757 | c2 = tolower_l(*(const UChar *)s2, locale); \ |
| 758 | if (c1 != c2) break; \ |
| 759 | if (c1 == 0) break; \ |
| 760 | s1++; s2++; \ |
| 761 | } \ |
| 762 | if ((UChar)c1 < (UChar)c2) return -1; \ |
| 763 | if ((UChar)c1 > (UChar)c2) return 1; \ |
| 764 | return 0; \ |
| 765 | } |
| 766 | |
| 767 | #if defined(VGO_linux) |
| 768 | STRCASECMP_L(VG_Z_LIBC_SONAME, strcasecmp_l) |
| 769 | STRCASECMP_L(VG_Z_LIBC_SONAME, __GI_strcasecmp_l) |
| 770 | STRCASECMP_L(VG_Z_LIBC_SONAME, __GI___strcasecmp_l) |
| 771 | |
| 772 | #elif defined(VGO_darwin) |
| 773 | //STRCASECMP_L(VG_Z_LIBC_SONAME, strcasecmp_l) |
| 774 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 775 | #elif defined(VGO_solaris) |
| 776 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 777 | #endif |
| 778 | |
| 779 | |
| 780 | /*---------------------- strncasecmp_l ----------------------*/ |
| 781 | |
| 782 | #define STRNCASECMP_L(soname, fnname) \ |
| 783 | int VG_REPLACE_FUNCTION_EZU(20150,soname,fnname) \ |
| 784 | ( const char* s1, const char* s2, SizeT nmax, void* locale ); \ |
| 785 | int VG_REPLACE_FUNCTION_EZU(20150,soname,fnname) \ |
| 786 | ( const char* s1, const char* s2, SizeT nmax, void* locale ) \ |
| 787 | { \ |
| 788 | extern int tolower_l(int, void*) __attribute__((weak)); \ |
| 789 | SizeT n = 0; \ |
| 790 | while (True) { \ |
| 791 | if (n >= nmax) return 0; \ |
| 792 | if (*s1 == 0 && *s2 == 0) return 0; \ |
| 793 | if (*s1 == 0) return -1; \ |
| 794 | if (*s2 == 0) return 1; \ |
| 795 | \ |
| 796 | if (tolower_l(*(const UChar *)s1, locale) \ |
| 797 | < tolower_l(*(const UChar *)s2, locale)) return -1; \ |
| 798 | if (tolower_l(*(const UChar *)s1, locale) \ |
| 799 | > tolower_l(*(const UChar *)s2, locale)) return 1; \ |
| 800 | \ |
| 801 | s1++; s2++; n++; \ |
| 802 | } \ |
| 803 | } |
| 804 | |
| 805 | #if defined(VGO_linux) |
| 806 | STRNCASECMP_L(VG_Z_LIBC_SONAME, strncasecmp_l) |
| 807 | STRNCASECMP_L(VG_Z_LIBC_SONAME, __GI_strncasecmp_l) |
| 808 | STRNCASECMP_L(VG_Z_LIBC_SONAME, __GI___strncasecmp_l) |
| 809 | |
| 810 | #elif defined(VGO_darwin) |
| 811 | //STRNCASECMP_L(VG_Z_LIBC_SONAME, strncasecmp_l) |
| 812 | //STRNCASECMP_L(VG_Z_DYLD, strncasecmp_l) |
| 813 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 814 | #elif defined(VGO_solaris) |
| 815 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 816 | #endif |
| 817 | |
| 818 | |
| 819 | /*---------------------- strcmp ----------------------*/ |
| 820 | |
| 821 | #define STRCMP(soname, fnname) \ |
| 822 | int VG_REPLACE_FUNCTION_EZU(20160,soname,fnname) \ |
| 823 | ( const char* s1, const char* s2 ); \ |
| 824 | int VG_REPLACE_FUNCTION_EZU(20160,soname,fnname) \ |
| 825 | ( const char* s1, const char* s2 ) \ |
| 826 | { \ |
| 827 | register UChar c1; \ |
| 828 | register UChar c2; \ |
| 829 | while (True) { \ |
| 830 | c1 = *(const UChar *)s1; \ |
| 831 | c2 = *(const UChar *)s2; \ |
| 832 | if (c1 != c2) break; \ |
| 833 | if (c1 == 0) break; \ |
| 834 | s1++; s2++; \ |
| 835 | } \ |
| 836 | if ((UChar)c1 < (UChar)c2) return -1; \ |
| 837 | if ((UChar)c1 > (UChar)c2) return 1; \ |
| 838 | return 0; \ |
| 839 | } |
| 840 | |
| 841 | #if defined(VGO_linux) |
| 842 | STRCMP(VG_Z_LIBC_SONAME, strcmp) |
| 843 | STRCMP(VG_Z_LIBC_SONAME, __GI_strcmp) |
| 844 | STRCMP(VG_Z_LIBC_SONAME, __strcmp_sse2) |
| 845 | STRCMP(VG_Z_LIBC_SONAME, __strcmp_sse42) |
| 846 | STRCMP(VG_Z_LD_LINUX_X86_64_SO_2, strcmp) |
| 847 | STRCMP(VG_Z_LD64_SO_1, strcmp) |
dejanj | 9c6b05d | 2013-12-27 09:06:55 +0000 | [diff] [blame] | 848 | # if defined(VGPV_arm_linux_android) || defined(VGPV_x86_linux_android) \ |
| 849 | || defined(VGPV_mips32_linux_android) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 850 | STRCMP(NONE, __dl_strcmp); /* in /system/bin/linker */ |
| 851 | # endif |
| 852 | |
| 853 | #elif defined(VGO_darwin) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 854 | STRCMP(VG_Z_LIBC_SONAME, strcmp) |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 855 | # if DARWIN_VERS >= DARWIN_10_9 |
sewardj | c3e09f6 | 2014-06-21 09:40:19 +0000 | [diff] [blame] | 856 | STRCMP(libsystemZuplatformZddylib, _platform_strcmp) |
| 857 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 858 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 859 | #elif defined(VGO_solaris) |
| 860 | STRCMP(VG_Z_LIBC_SONAME, strcmp) |
| 861 | STRCMP(VG_Z_LD_SO_1, strcmp) |
| 862 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 863 | #endif |
| 864 | |
| 865 | |
| 866 | /*---------------------- memchr ----------------------*/ |
| 867 | |
| 868 | #define MEMCHR(soname, fnname) \ |
| 869 | void* VG_REPLACE_FUNCTION_EZU(20170,soname,fnname) \ |
| 870 | (const void *s, int c, SizeT n); \ |
| 871 | void* VG_REPLACE_FUNCTION_EZU(20170,soname,fnname) \ |
| 872 | (const void *s, int c, SizeT n) \ |
| 873 | { \ |
| 874 | SizeT i; \ |
| 875 | UChar c0 = (UChar)c; \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 876 | const UChar* p = s; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 877 | for (i = 0; i < n; i++) \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 878 | if (p[i] == c0) return CONST_CAST(void *,&p[i]); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 879 | return NULL; \ |
| 880 | } |
| 881 | |
| 882 | #if defined(VGO_linux) |
| 883 | MEMCHR(VG_Z_LIBC_SONAME, memchr) |
| 884 | MEMCHR(VG_Z_LIBC_SONAME, __GI_memchr) |
| 885 | |
| 886 | #elif defined(VGO_darwin) |
sewardj | aec49a4 | 2014-06-23 16:03:45 +0000 | [diff] [blame] | 887 | # if DARWIN_VERS == DARWIN_10_9 |
sewardj | 798e95b | 2014-06-25 11:17:46 +0000 | [diff] [blame] | 888 | MEMCHR(VG_Z_DYLD, memchr) |
sewardj | aec49a4 | 2014-06-23 16:03:45 +0000 | [diff] [blame] | 889 | MEMCHR(libsystemZuplatformZddylib, _platform_memchr) |
| 890 | # endif |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 891 | # if DARWIN_VERS >= DARWIN_10_10 |
sewardj | a95abea | 2014-11-19 09:14:07 +0000 | [diff] [blame] | 892 | MEMCHR(VG_Z_DYLD, memchr) |
sewardj | 312bcb1 | 2014-11-07 00:08:13 +0000 | [diff] [blame] | 893 | /* _platform_memchr$VARIANT$Generic */ |
| 894 | MEMCHR(libsystemZuplatformZddylib, _platform_memchr$VARIANT$Generic) |
rhyskidd | e4fcda3 | 2015-08-29 07:42:40 +0000 | [diff] [blame] | 895 | /* _platform_memchr$VARIANT$Haswell */ |
| 896 | MEMCHR(libsystemZuplatformZddylib, _platform_memchr$VARIANT$Haswell) |
sewardj | 312bcb1 | 2014-11-07 00:08:13 +0000 | [diff] [blame] | 897 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 898 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 899 | #elif defined(VGO_solaris) |
| 900 | MEMCHR(VG_Z_LIBC_SONAME, memchr) |
| 901 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 902 | #endif |
| 903 | |
| 904 | |
| 905 | /*---------------------- memrchr ----------------------*/ |
| 906 | |
| 907 | #define MEMRCHR(soname, fnname) \ |
| 908 | void* VG_REPLACE_FUNCTION_EZU(20360,soname,fnname) \ |
| 909 | (const void *s, int c, SizeT n); \ |
| 910 | void* VG_REPLACE_FUNCTION_EZU(20360,soname,fnname) \ |
| 911 | (const void *s, int c, SizeT n) \ |
| 912 | { \ |
| 913 | SizeT i; \ |
| 914 | UChar c0 = (UChar)c; \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 915 | const UChar* p = s; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 916 | for (i = 0; i < n; i++) \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 917 | if (p[n-1-i] == c0) return CONST_CAST(void *,&p[n-1-i]); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 918 | return NULL; \ |
| 919 | } |
| 920 | |
| 921 | #if defined(VGO_linux) |
| 922 | MEMRCHR(VG_Z_LIBC_SONAME, memrchr) |
| 923 | |
| 924 | #elif defined(VGO_darwin) |
| 925 | //MEMRCHR(VG_Z_LIBC_SONAME, memrchr) |
| 926 | //MEMRCHR(VG_Z_DYLD, memrchr) |
| 927 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 928 | #elif defined(VGO_solaris) |
| 929 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 930 | #endif |
| 931 | |
| 932 | |
| 933 | /*---------------------- memcpy ----------------------*/ |
| 934 | |
| 935 | #define MEMMOVE_OR_MEMCPY(becTag, soname, fnname, do_ol_check) \ |
| 936 | void* VG_REPLACE_FUNCTION_EZZ(becTag,soname,fnname) \ |
| 937 | ( void *dst, const void *src, SizeT len ); \ |
| 938 | void* VG_REPLACE_FUNCTION_EZZ(becTag,soname,fnname) \ |
| 939 | ( void *dst, const void *src, SizeT len ) \ |
| 940 | { \ |
| 941 | if (do_ol_check && is_overlap(dst, src, len, len)) \ |
| 942 | RECORD_OVERLAP_ERROR("memcpy", dst, src, len); \ |
| 943 | \ |
| 944 | const Addr WS = sizeof(UWord); /* 8 or 4 */ \ |
| 945 | const Addr WM = WS - 1; /* 7 or 3 */ \ |
| 946 | \ |
| 947 | if (len > 0) { \ |
| 948 | if (dst < src || !is_overlap(dst, src, len, len)) { \ |
| 949 | \ |
| 950 | /* Copying backwards. */ \ |
| 951 | SizeT n = len; \ |
| 952 | Addr d = (Addr)dst; \ |
| 953 | Addr s = (Addr)src; \ |
| 954 | \ |
| 955 | if (((s^d) & WM) == 0) { \ |
| 956 | /* s and d have same UWord alignment. */ \ |
| 957 | /* Pull up to a UWord boundary. */ \ |
| 958 | while ((s & WM) != 0 && n >= 1) \ |
| 959 | { *(UChar*)d = *(UChar*)s; s += 1; d += 1; n -= 1; } \ |
| 960 | /* Copy UWords. */ \ |
| 961 | while (n >= WS) \ |
| 962 | { *(UWord*)d = *(UWord*)s; s += WS; d += WS; n -= WS; } \ |
| 963 | if (n == 0) \ |
| 964 | return dst; \ |
| 965 | } \ |
| 966 | if (((s|d) & 1) == 0) { \ |
| 967 | /* Both are 16-aligned; copy what we can thusly. */ \ |
| 968 | while (n >= 2) \ |
| 969 | { *(UShort*)d = *(UShort*)s; s += 2; d += 2; n -= 2; } \ |
| 970 | } \ |
| 971 | /* Copy leftovers, or everything if misaligned. */ \ |
| 972 | while (n >= 1) \ |
| 973 | { *(UChar*)d = *(UChar*)s; s += 1; d += 1; n -= 1; } \ |
| 974 | \ |
| 975 | } else if (dst > src) { \ |
| 976 | \ |
| 977 | SizeT n = len; \ |
| 978 | Addr d = ((Addr)dst) + n; \ |
| 979 | Addr s = ((Addr)src) + n; \ |
| 980 | \ |
| 981 | /* Copying forwards. */ \ |
| 982 | if (((s^d) & WM) == 0) { \ |
| 983 | /* s and d have same UWord alignment. */ \ |
| 984 | /* Back down to a UWord boundary. */ \ |
| 985 | while ((s & WM) != 0 && n >= 1) \ |
| 986 | { s -= 1; d -= 1; *(UChar*)d = *(UChar*)s; n -= 1; } \ |
| 987 | /* Copy UWords. */ \ |
| 988 | while (n >= WS) \ |
| 989 | { s -= WS; d -= WS; *(UWord*)d = *(UWord*)s; n -= WS; } \ |
| 990 | if (n == 0) \ |
| 991 | return dst; \ |
| 992 | } \ |
| 993 | if (((s|d) & 1) == 0) { \ |
| 994 | /* Both are 16-aligned; copy what we can thusly. */ \ |
| 995 | while (n >= 2) \ |
| 996 | { s -= 2; d -= 2; *(UShort*)d = *(UShort*)s; n -= 2; } \ |
| 997 | } \ |
| 998 | /* Copy leftovers, or everything if misaligned. */ \ |
| 999 | while (n >= 1) \ |
| 1000 | { s -= 1; d -= 1; *(UChar*)d = *(UChar*)s; n -= 1; } \ |
| 1001 | \ |
| 1002 | } \ |
| 1003 | } \ |
| 1004 | \ |
| 1005 | return dst; \ |
| 1006 | } |
| 1007 | |
| 1008 | #define MEMMOVE(soname, fnname) \ |
| 1009 | MEMMOVE_OR_MEMCPY(20181, soname, fnname, 0) |
| 1010 | |
| 1011 | #define MEMCPY(soname, fnname) \ |
| 1012 | MEMMOVE_OR_MEMCPY(20180, soname, fnname, 1) |
| 1013 | |
| 1014 | #if defined(VGO_linux) |
| 1015 | /* For older memcpy we have to use memmove-like semantics and skip |
| 1016 | the overlap check; sigh; see #275284. */ |
| 1017 | MEMMOVE(VG_Z_LIBC_SONAME, memcpyZAGLIBCZu2Zd2Zd5) /* memcpy@GLIBC_2.2.5 */ |
| 1018 | MEMCPY(VG_Z_LIBC_SONAME, memcpyZAZAGLIBCZu2Zd14) /* memcpy@@GLIBC_2.14 */ |
| 1019 | MEMCPY(VG_Z_LIBC_SONAME, memcpy) /* fallback case */ |
| 1020 | MEMCPY(VG_Z_LIBC_SONAME, __GI_memcpy) |
| 1021 | MEMCPY(VG_Z_LIBC_SONAME, __memcpy_sse2) |
| 1022 | MEMCPY(VG_Z_LD_SO_1, memcpy) /* ld.so.1 */ |
| 1023 | MEMCPY(VG_Z_LD64_SO_1, memcpy) /* ld64.so.1 */ |
| 1024 | /* icc9 blats these around all over the place. Not only in the main |
| 1025 | executable but various .so's. They are highly tuned and read |
| 1026 | memory beyond the source boundary (although work correctly and |
| 1027 | never go across page boundaries), so give errors when run |
| 1028 | natively, at least for misaligned source arg. Just intercepting |
| 1029 | in the exe only until we understand more about the problem. See |
| 1030 | http://bugs.kde.org/show_bug.cgi?id=139776 |
| 1031 | */ |
| 1032 | MEMCPY(NONE, ZuintelZufastZumemcpy) |
| 1033 | |
| 1034 | #elif defined(VGO_darwin) |
| 1035 | # if DARWIN_VERS <= DARWIN_10_6 |
| 1036 | MEMCPY(VG_Z_LIBC_SONAME, memcpy) |
| 1037 | # endif |
| 1038 | MEMCPY(VG_Z_LIBC_SONAME, memcpyZDVARIANTZDsse3x) /* memcpy$VARIANT$sse3x */ |
| 1039 | MEMCPY(VG_Z_LIBC_SONAME, memcpyZDVARIANTZDsse42) /* memcpy$VARIANT$sse42 */ |
| 1040 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1041 | #elif defined(VGO_solaris) |
| 1042 | MEMCPY(VG_Z_LIBC_SONAME, memcpy) |
| 1043 | MEMCPY(VG_Z_LD_SO_1, memcpy) |
| 1044 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1045 | #endif |
| 1046 | |
| 1047 | |
| 1048 | /*---------------------- memcmp ----------------------*/ |
| 1049 | |
| 1050 | #define MEMCMP(soname, fnname) \ |
| 1051 | int VG_REPLACE_FUNCTION_EZU(20190,soname,fnname) \ |
| 1052 | ( const void *s1V, const void *s2V, SizeT n ); \ |
| 1053 | int VG_REPLACE_FUNCTION_EZU(20190,soname,fnname) \ |
| 1054 | ( const void *s1V, const void *s2V, SizeT n ) \ |
| 1055 | { \ |
sewardj | 094b991 | 2015-02-04 18:46:11 +0000 | [diff] [blame] | 1056 | const SizeT WS = sizeof(UWord); /* 8 or 4 */ \ |
| 1057 | const SizeT WM = WS - 1; /* 7 or 3 */ \ |
sewardj | 11e20f7 | 2015-02-04 17:52:42 +0000 | [diff] [blame] | 1058 | Addr s1A = (Addr)s1V; \ |
| 1059 | Addr s2A = (Addr)s2V; \ |
| 1060 | \ |
| 1061 | if (((s1A | s2A) & WM) == 0) { \ |
| 1062 | /* Both areas are word aligned. Skip over the */ \ |
| 1063 | /* equal prefix as fast as possible. */ \ |
| 1064 | while (n >= WS) { \ |
| 1065 | UWord w1 = *(UWord*)s1A; \ |
| 1066 | UWord w2 = *(UWord*)s2A; \ |
| 1067 | if (w1 != w2) break; \ |
| 1068 | s1A += WS; \ |
| 1069 | s2A += WS; \ |
| 1070 | n -= WS; \ |
| 1071 | } \ |
| 1072 | } \ |
| 1073 | \ |
| 1074 | const UChar* s1 = (const UChar*) s1A; \ |
| 1075 | const UChar* s2 = (const UChar*) s2A; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1076 | \ |
| 1077 | while (n != 0) { \ |
sewardj | 11e20f7 | 2015-02-04 17:52:42 +0000 | [diff] [blame] | 1078 | UChar a0 = s1[0]; \ |
| 1079 | UChar b0 = s2[0]; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1080 | s1 += 1; \ |
| 1081 | s2 += 1; \ |
sewardj | 11e20f7 | 2015-02-04 17:52:42 +0000 | [diff] [blame] | 1082 | int res = ((int)a0) - ((int)b0); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1083 | if (res != 0) \ |
| 1084 | return res; \ |
| 1085 | n -= 1; \ |
| 1086 | } \ |
| 1087 | return 0; \ |
| 1088 | } |
| 1089 | |
| 1090 | #if defined(VGO_linux) |
| 1091 | MEMCMP(VG_Z_LIBC_SONAME, memcmp) |
| 1092 | MEMCMP(VG_Z_LIBC_SONAME, __GI_memcmp) |
| 1093 | MEMCMP(VG_Z_LIBC_SONAME, __memcmp_sse2) |
| 1094 | MEMCMP(VG_Z_LIBC_SONAME, __memcmp_sse4_1) |
| 1095 | MEMCMP(VG_Z_LIBC_SONAME, bcmp) |
| 1096 | MEMCMP(VG_Z_LD_SO_1, bcmp) |
| 1097 | |
| 1098 | #elif defined(VGO_darwin) |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 1099 | # if DARWIN_VERS >= DARWIN_10_9 |
sewardj | aec49a4 | 2014-06-23 16:03:45 +0000 | [diff] [blame] | 1100 | MEMCMP(libsystemZuplatformZddylib, _platform_memcmp) |
| 1101 | # endif |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1102 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1103 | #elif defined(VGO_solaris) |
| 1104 | MEMCMP(VG_Z_LIBC_SONAME, memcmp) |
| 1105 | MEMCMP(VG_Z_LIBC_SONAME, bcmp) |
| 1106 | MEMCMP(VG_Z_LD_SO_1, memcmp) |
| 1107 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1108 | #endif |
| 1109 | |
| 1110 | |
| 1111 | /*---------------------- stpcpy ----------------------*/ |
| 1112 | |
| 1113 | /* Copy SRC to DEST, returning the address of the terminating '\0' in |
| 1114 | DEST. (minor variant of strcpy) */ |
| 1115 | #define STPCPY(soname, fnname) \ |
| 1116 | char* VG_REPLACE_FUNCTION_EZU(20200,soname,fnname) \ |
| 1117 | ( char* dst, const char* src ); \ |
| 1118 | char* VG_REPLACE_FUNCTION_EZU(20200,soname,fnname) \ |
| 1119 | ( char* dst, const char* src ) \ |
| 1120 | { \ |
| 1121 | const HChar* src_orig = src; \ |
| 1122 | HChar* dst_orig = dst; \ |
| 1123 | \ |
| 1124 | while (*src) *dst++ = *src++; \ |
| 1125 | *dst = 0; \ |
| 1126 | \ |
| 1127 | /* This checks for overlap after copying, unavoidable without */ \ |
| 1128 | /* pre-counting length... should be ok */ \ |
| 1129 | if (is_overlap(dst_orig, \ |
| 1130 | src_orig, \ |
| 1131 | (Addr)dst-(Addr)dst_orig+1, \ |
| 1132 | (Addr)src-(Addr)src_orig+1)) \ |
| 1133 | RECORD_OVERLAP_ERROR("stpcpy", dst_orig, src_orig, 0); \ |
| 1134 | \ |
| 1135 | return dst; \ |
| 1136 | } |
| 1137 | |
| 1138 | #if defined(VGO_linux) |
| 1139 | STPCPY(VG_Z_LIBC_SONAME, stpcpy) |
| 1140 | STPCPY(VG_Z_LIBC_SONAME, __GI_stpcpy) |
| 1141 | STPCPY(VG_Z_LIBC_SONAME, __stpcpy_sse2) |
| 1142 | STPCPY(VG_Z_LIBC_SONAME, __stpcpy_sse2_unaligned) |
| 1143 | STPCPY(VG_Z_LD_LINUX_SO_2, stpcpy) |
| 1144 | STPCPY(VG_Z_LD_LINUX_X86_64_SO_2, stpcpy) |
| 1145 | |
| 1146 | #elif defined(VGO_darwin) |
| 1147 | //STPCPY(VG_Z_LIBC_SONAME, stpcpy) |
| 1148 | //STPCPY(VG_Z_DYLD, stpcpy) |
| 1149 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1150 | #elif defined(VGO_solaris) |
| 1151 | STPCPY(VG_Z_LIBC_SONAME, stpcpy) |
| 1152 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1153 | #endif |
| 1154 | |
| 1155 | |
| 1156 | /*---------------------- stpncpy ----------------------*/ |
| 1157 | |
| 1158 | #define STPNCPY(soname, fnname) \ |
| 1159 | char* VG_REPLACE_FUNCTION_EZU(20420,soname,fnname) \ |
| 1160 | ( char* dst, const char* src, SizeT n ); \ |
| 1161 | char* VG_REPLACE_FUNCTION_EZU(20420,soname,fnname) \ |
| 1162 | ( char* dst, const char* src, SizeT n ) \ |
| 1163 | { \ |
| 1164 | const HChar* src_orig = src; \ |
| 1165 | HChar* dst_str = dst; \ |
| 1166 | SizeT m = 0; \ |
| 1167 | \ |
| 1168 | while (m < n && *src) { m++; *dst++ = *src++; } \ |
| 1169 | /* Check for overlap after copying; all n bytes of dst are relevant, */ \ |
| 1170 | /* but only m+1 bytes of src if terminator was found */ \ |
| 1171 | if (is_overlap(dst_str, src_orig, n, (m < n) ? m+1 : n)) \ |
| 1172 | RECORD_OVERLAP_ERROR("stpncpy", dst, src, n); \ |
| 1173 | dst_str = dst; \ |
| 1174 | while (m++ < n) *dst++ = 0; /* must pad remainder with nulls */ \ |
| 1175 | \ |
| 1176 | return dst_str; \ |
| 1177 | } |
| 1178 | |
| 1179 | #if defined(VGO_linux) |
| 1180 | STPNCPY(VG_Z_LIBC_SONAME, stpncpy) |
| 1181 | #endif |
| 1182 | |
| 1183 | |
| 1184 | /*---------------------- memset ----------------------*/ |
| 1185 | |
| 1186 | /* Why are we bothering to intercept this? It seems entirely |
| 1187 | pointless. */ |
| 1188 | |
| 1189 | #define MEMSET(soname, fnname) \ |
| 1190 | void* VG_REPLACE_FUNCTION_EZU(20210,soname,fnname) \ |
| 1191 | (void *s, Int c, SizeT n); \ |
| 1192 | void* VG_REPLACE_FUNCTION_EZU(20210,soname,fnname) \ |
| 1193 | (void *s, Int c, SizeT n) \ |
| 1194 | { \ |
| 1195 | if (sizeof(void*) == 8) { \ |
| 1196 | Addr a = (Addr)s; \ |
| 1197 | ULong c8 = (c & 0xFF); \ |
| 1198 | c8 = (c8 << 8) | c8; \ |
| 1199 | c8 = (c8 << 16) | c8; \ |
| 1200 | c8 = (c8 << 32) | c8; \ |
| 1201 | while ((a & 7) != 0 && n >= 1) \ |
| 1202 | { *(UChar*)a = (UChar)c; a += 1; n -= 1; } \ |
| 1203 | while (n >= 8) \ |
| 1204 | { *(ULong*)a = c8; a += 8; n -= 8; } \ |
| 1205 | while (n >= 1) \ |
| 1206 | { *(UChar*)a = (UChar)c; a += 1; n -= 1; } \ |
| 1207 | return s; \ |
| 1208 | } else { \ |
| 1209 | Addr a = (Addr)s; \ |
| 1210 | UInt c4 = (c & 0xFF); \ |
| 1211 | c4 = (c4 << 8) | c4; \ |
| 1212 | c4 = (c4 << 16) | c4; \ |
| 1213 | while ((a & 3) != 0 && n >= 1) \ |
| 1214 | { *(UChar*)a = (UChar)c; a += 1; n -= 1; } \ |
| 1215 | while (n >= 4) \ |
| 1216 | { *(UInt*)a = c4; a += 4; n -= 4; } \ |
| 1217 | while (n >= 1) \ |
| 1218 | { *(UChar*)a = (UChar)c; a += 1; n -= 1; } \ |
| 1219 | return s; \ |
| 1220 | } \ |
| 1221 | } |
| 1222 | |
| 1223 | #if defined(VGO_linux) |
| 1224 | MEMSET(VG_Z_LIBC_SONAME, memset) |
| 1225 | |
| 1226 | #elif defined(VGO_darwin) |
| 1227 | //MEMSET(VG_Z_LIBC_SONAME, memset) |
| 1228 | //MEMSET(VG_Z_DYLD, memset) |
| 1229 | MEMSET(VG_Z_LIBC_SONAME, memset) |
| 1230 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1231 | #elif defined(VGO_solaris) |
| 1232 | MEMSET(VG_Z_LIBC_SONAME, memset) |
| 1233 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1234 | #endif |
| 1235 | |
| 1236 | |
| 1237 | /*---------------------- memmove ----------------------*/ |
| 1238 | |
| 1239 | /* memmove -- use the MEMMOVE defn above. */ |
| 1240 | |
| 1241 | #if defined(VGO_linux) |
| 1242 | MEMMOVE(VG_Z_LIBC_SONAME, memmove) |
| 1243 | MEMMOVE(VG_Z_LIBC_SONAME, __GI_memmove) |
mjw | b97cf8e | 2015-07-07 13:01:39 +0000 | [diff] [blame] | 1244 | /* See bug #349828 Override for ld64.so.1 like memcpy, because for some |
| 1245 | arches MEMCPY_OK_FOR_FORWARD_MEMMOVE is set, which might cause memmove |
| 1246 | to call memcpy. */ |
| 1247 | MEMMOVE(VG_Z_LD64_SO_1, memmove) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1248 | |
| 1249 | #elif defined(VGO_darwin) |
| 1250 | # if DARWIN_VERS <= DARWIN_10_6 |
| 1251 | MEMMOVE(VG_Z_LIBC_SONAME, memmove) |
| 1252 | # endif |
| 1253 | MEMMOVE(VG_Z_LIBC_SONAME, memmoveZDVARIANTZDsse3x) /* memmove$VARIANT$sse3x */ |
| 1254 | MEMMOVE(VG_Z_LIBC_SONAME, memmoveZDVARIANTZDsse42) /* memmove$VARIANT$sse42 */ |
rhyskidd | 9090d2f | 2015-07-08 13:46:57 +0000 | [diff] [blame] | 1255 | # if DARWIN_VERS >= DARWIN_10_9 |
sewardj | 312bcb1 | 2014-11-07 00:08:13 +0000 | [diff] [blame] | 1256 | /* _platform_memmove$VARIANT$Ivybridge */ |
sewardj | eb86dda | 2014-10-17 15:07:37 +0000 | [diff] [blame] | 1257 | MEMMOVE(libsystemZuplatformZddylib, ZuplatformZumemmoveZDVARIANTZDIvybridge) |
| 1258 | # endif |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1259 | |
| 1260 | #elif defined(VGO_solaris) |
| 1261 | MEMMOVE(VG_Z_LIBC_SONAME, memmove) |
| 1262 | MEMMOVE(VG_Z_LD_SO_1, memmove) |
| 1263 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1264 | #endif |
| 1265 | |
| 1266 | |
| 1267 | /*---------------------- bcopy ----------------------*/ |
| 1268 | |
| 1269 | #define BCOPY(soname, fnname) \ |
| 1270 | void VG_REPLACE_FUNCTION_EZU(20230,soname,fnname) \ |
| 1271 | (const void *srcV, void *dstV, SizeT n); \ |
| 1272 | void VG_REPLACE_FUNCTION_EZU(20230,soname,fnname) \ |
| 1273 | (const void *srcV, void *dstV, SizeT n) \ |
| 1274 | { \ |
| 1275 | SizeT i; \ |
| 1276 | HChar* dst = dstV; \ |
| 1277 | const HChar* src = srcV; \ |
| 1278 | if (dst < src) { \ |
| 1279 | for (i = 0; i < n; i++) \ |
| 1280 | dst[i] = src[i]; \ |
| 1281 | } \ |
| 1282 | else \ |
| 1283 | if (dst > src) { \ |
| 1284 | for (i = 0; i < n; i++) \ |
| 1285 | dst[n-i-1] = src[n-i-1]; \ |
| 1286 | } \ |
| 1287 | } |
| 1288 | |
| 1289 | #if defined(VGO_linux) |
| 1290 | BCOPY(VG_Z_LIBC_SONAME, bcopy) |
| 1291 | |
| 1292 | #elif defined(VGO_darwin) |
| 1293 | //BCOPY(VG_Z_LIBC_SONAME, bcopy) |
| 1294 | //BCOPY(VG_Z_DYLD, bcopy) |
| 1295 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1296 | #elif defined(VGO_darwin) |
| 1297 | BCOPY(VG_Z_LIBC_SONAME, bcopy) |
| 1298 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1299 | #endif |
| 1300 | |
| 1301 | |
| 1302 | /*-------------------- memmove_chk --------------------*/ |
| 1303 | |
| 1304 | /* glibc 2.5 variant of memmove which checks the dest is big enough. |
| 1305 | There is no specific part of glibc that this is copied from. */ |
| 1306 | #define GLIBC25___MEMMOVE_CHK(soname, fnname) \ |
| 1307 | void* VG_REPLACE_FUNCTION_EZU(20240,soname,fnname) \ |
| 1308 | (void *dstV, const void *srcV, SizeT n, SizeT destlen); \ |
| 1309 | void* VG_REPLACE_FUNCTION_EZU(20240,soname,fnname) \ |
| 1310 | (void *dstV, const void *srcV, SizeT n, SizeT destlen) \ |
| 1311 | { \ |
| 1312 | SizeT i; \ |
| 1313 | HChar* dst = dstV; \ |
| 1314 | const HChar* src = srcV; \ |
| 1315 | if (destlen < n) \ |
| 1316 | goto badness; \ |
| 1317 | if (dst < src) { \ |
| 1318 | for (i = 0; i < n; i++) \ |
| 1319 | dst[i] = src[i]; \ |
| 1320 | } \ |
| 1321 | else \ |
| 1322 | if (dst > src) { \ |
| 1323 | for (i = 0; i < n; i++) \ |
| 1324 | dst[n-i-1] = src[n-i-1]; \ |
| 1325 | } \ |
| 1326 | return dst; \ |
| 1327 | badness: \ |
| 1328 | VALGRIND_PRINTF_BACKTRACE( \ |
| 1329 | "*** memmove_chk: buffer overflow detected ***: " \ |
| 1330 | "program terminated\n"); \ |
florian | 77ae999 | 2015-08-09 20:29:18 +0000 | [diff] [blame] | 1331 | my_exit(1); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1332 | /*NOTREACHED*/ \ |
| 1333 | return NULL; \ |
| 1334 | } |
| 1335 | |
| 1336 | #if defined(VGO_linux) |
| 1337 | GLIBC25___MEMMOVE_CHK(VG_Z_LIBC_SONAME, __memmove_chk) |
| 1338 | |
| 1339 | #elif defined(VGO_darwin) |
| 1340 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1341 | #elif defined(VGO_solaris) |
| 1342 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1343 | #endif |
| 1344 | |
| 1345 | |
| 1346 | /*-------------------- strchrnul --------------------*/ |
| 1347 | |
| 1348 | /* Find the first occurrence of C in S or the final NUL byte. */ |
| 1349 | #define GLIBC232_STRCHRNUL(soname, fnname) \ |
| 1350 | char* VG_REPLACE_FUNCTION_EZU(20250,soname,fnname) \ |
| 1351 | (const char* s, int c_in); \ |
| 1352 | char* VG_REPLACE_FUNCTION_EZU(20250,soname,fnname) \ |
| 1353 | (const char* s, int c_in) \ |
| 1354 | { \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1355 | HChar c = (HChar) c_in; \ |
| 1356 | const HChar* char_ptr = s; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1357 | while (1) { \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1358 | if (*char_ptr == 0) return CONST_CAST(HChar *,char_ptr); \ |
| 1359 | if (*char_ptr == c) return CONST_CAST(HChar *,char_ptr); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1360 | char_ptr++; \ |
| 1361 | } \ |
| 1362 | } |
| 1363 | |
| 1364 | #if defined(VGO_linux) |
| 1365 | GLIBC232_STRCHRNUL(VG_Z_LIBC_SONAME, strchrnul) |
| 1366 | |
| 1367 | #elif defined(VGO_darwin) |
| 1368 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1369 | #elif defined(VGO_solaris) |
| 1370 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1371 | #endif |
| 1372 | |
| 1373 | |
| 1374 | /*---------------------- rawmemchr ----------------------*/ |
| 1375 | |
| 1376 | /* Find the first occurrence of C in S. */ |
| 1377 | #define GLIBC232_RAWMEMCHR(soname, fnname) \ |
florian | 1ef205b | 2014-10-22 12:06:22 +0000 | [diff] [blame] | 1378 | void* VG_REPLACE_FUNCTION_EZU(20260,soname,fnname) \ |
| 1379 | (const void* s, int c_in); \ |
| 1380 | void* VG_REPLACE_FUNCTION_EZU(20260,soname,fnname) \ |
| 1381 | (const void* s, int c_in) \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1382 | { \ |
florian | 1ef205b | 2014-10-22 12:06:22 +0000 | [diff] [blame] | 1383 | UChar c = (UChar) c_in; \ |
| 1384 | const UChar* char_ptr = s; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1385 | while (1) { \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1386 | if (*char_ptr == c) return CONST_CAST(void *,char_ptr); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1387 | char_ptr++; \ |
| 1388 | } \ |
| 1389 | } |
| 1390 | |
| 1391 | #if defined (VGO_linux) |
| 1392 | GLIBC232_RAWMEMCHR(VG_Z_LIBC_SONAME, rawmemchr) |
| 1393 | GLIBC232_RAWMEMCHR(VG_Z_LIBC_SONAME, __GI___rawmemchr) |
| 1394 | |
| 1395 | #elif defined(VGO_darwin) |
| 1396 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1397 | #elif defined(VGO_solaris) |
| 1398 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1399 | #endif |
| 1400 | |
| 1401 | |
| 1402 | /*---------------------- strcpy_chk ----------------------*/ |
| 1403 | |
| 1404 | /* glibc variant of strcpy that checks the dest is big enough. |
| 1405 | Copied from glibc-2.5/debug/test-strcpy_chk.c. */ |
| 1406 | #define GLIBC25___STRCPY_CHK(soname,fnname) \ |
| 1407 | char* VG_REPLACE_FUNCTION_EZU(20270,soname,fnname) \ |
| 1408 | (char* dst, const char* src, SizeT len); \ |
| 1409 | char* VG_REPLACE_FUNCTION_EZU(20270,soname,fnname) \ |
| 1410 | (char* dst, const char* src, SizeT len) \ |
| 1411 | { \ |
| 1412 | HChar* ret = dst; \ |
| 1413 | if (! len) \ |
| 1414 | goto badness; \ |
| 1415 | while ((*dst++ = *src++) != '\0') \ |
| 1416 | if (--len == 0) \ |
| 1417 | goto badness; \ |
| 1418 | return ret; \ |
| 1419 | badness: \ |
| 1420 | VALGRIND_PRINTF_BACKTRACE( \ |
| 1421 | "*** strcpy_chk: buffer overflow detected ***: " \ |
| 1422 | "program terminated\n"); \ |
florian | 77ae999 | 2015-08-09 20:29:18 +0000 | [diff] [blame] | 1423 | my_exit(1); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1424 | /*NOTREACHED*/ \ |
| 1425 | return NULL; \ |
| 1426 | } |
| 1427 | |
| 1428 | #if defined(VGO_linux) |
| 1429 | GLIBC25___STRCPY_CHK(VG_Z_LIBC_SONAME, __strcpy_chk) |
| 1430 | |
| 1431 | #elif defined(VGO_darwin) |
| 1432 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1433 | #elif defined(VGO_solaris) |
| 1434 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1435 | #endif |
| 1436 | |
| 1437 | |
| 1438 | /*---------------------- stpcpy_chk ----------------------*/ |
| 1439 | |
| 1440 | /* glibc variant of stpcpy that checks the dest is big enough. |
| 1441 | Copied from glibc-2.5/debug/test-stpcpy_chk.c. */ |
| 1442 | #define GLIBC25___STPCPY_CHK(soname,fnname) \ |
| 1443 | char* VG_REPLACE_FUNCTION_EZU(20280,soname,fnname) \ |
| 1444 | (char* dst, const char* src, SizeT len); \ |
| 1445 | char* VG_REPLACE_FUNCTION_EZU(20280,soname,fnname) \ |
| 1446 | (char* dst, const char* src, SizeT len) \ |
| 1447 | { \ |
| 1448 | if (! len) \ |
| 1449 | goto badness; \ |
| 1450 | while ((*dst++ = *src++) != '\0') \ |
| 1451 | if (--len == 0) \ |
| 1452 | goto badness; \ |
| 1453 | return dst - 1; \ |
| 1454 | badness: \ |
| 1455 | VALGRIND_PRINTF_BACKTRACE( \ |
| 1456 | "*** stpcpy_chk: buffer overflow detected ***: " \ |
| 1457 | "program terminated\n"); \ |
florian | 77ae999 | 2015-08-09 20:29:18 +0000 | [diff] [blame] | 1458 | my_exit(1); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1459 | /*NOTREACHED*/ \ |
| 1460 | return NULL; \ |
| 1461 | } |
| 1462 | |
| 1463 | #if defined(VGO_linux) |
| 1464 | GLIBC25___STPCPY_CHK(VG_Z_LIBC_SONAME, __stpcpy_chk) |
| 1465 | |
| 1466 | #elif defined(VGO_darwin) |
| 1467 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1468 | #elif defined(VGO_solaris) |
| 1469 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1470 | #endif |
| 1471 | |
| 1472 | |
| 1473 | /*---------------------- mempcpy ----------------------*/ |
| 1474 | |
| 1475 | /* mempcpy */ |
| 1476 | #define GLIBC25_MEMPCPY(soname, fnname) \ |
| 1477 | void* VG_REPLACE_FUNCTION_EZU(20290,soname,fnname) \ |
| 1478 | ( void *dst, const void *src, SizeT len ); \ |
| 1479 | void* VG_REPLACE_FUNCTION_EZU(20290,soname,fnname) \ |
| 1480 | ( void *dst, const void *src, SizeT len ) \ |
| 1481 | { \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1482 | SizeT len_saved = len; \ |
| 1483 | \ |
| 1484 | if (len == 0) \ |
| 1485 | return dst; \ |
| 1486 | \ |
| 1487 | if (is_overlap(dst, src, len, len)) \ |
| 1488 | RECORD_OVERLAP_ERROR("mempcpy", dst, src, len); \ |
| 1489 | \ |
| 1490 | if ( dst > src ) { \ |
florian | 09041e4 | 2014-10-21 17:15:14 +0000 | [diff] [blame] | 1491 | register HChar *d = (char *)dst + len - 1; \ |
| 1492 | register const HChar *s = (const char *)src + len - 1; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1493 | while ( len-- ) { \ |
| 1494 | *d-- = *s--; \ |
| 1495 | } \ |
| 1496 | } else if ( dst < src ) { \ |
florian | 09041e4 | 2014-10-21 17:15:14 +0000 | [diff] [blame] | 1497 | register HChar *d = dst; \ |
| 1498 | register const HChar *s = src; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1499 | while ( len-- ) { \ |
| 1500 | *d++ = *s++; \ |
| 1501 | } \ |
| 1502 | } \ |
| 1503 | return (void*)( ((char*)dst) + len_saved ); \ |
| 1504 | } |
| 1505 | |
| 1506 | #if defined(VGO_linux) |
| 1507 | GLIBC25_MEMPCPY(VG_Z_LIBC_SONAME, mempcpy) |
mjw | a9176d9 | 2015-01-13 16:10:20 +0000 | [diff] [blame] | 1508 | GLIBC25_MEMPCPY(VG_Z_LIBC_SONAME, __GI_mempcpy) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1509 | GLIBC25_MEMPCPY(VG_Z_LD_SO_1, mempcpy) /* ld.so.1 */ |
bart | f2d8663 | 2014-03-15 12:47:28 +0000 | [diff] [blame] | 1510 | GLIBC25_MEMPCPY(VG_Z_LD_LINUX_SO_3, mempcpy) /* ld-linux.so.3 */ |
| 1511 | GLIBC25_MEMPCPY(VG_Z_LD_LINUX_X86_64_SO_2, mempcpy) /* ld-linux-x86-64.so.2 */ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1512 | |
| 1513 | #elif defined(VGO_darwin) |
| 1514 | //GLIBC25_MEMPCPY(VG_Z_LIBC_SONAME, mempcpy) |
| 1515 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1516 | #elif defined(VGO_solaris) |
| 1517 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1518 | #endif |
| 1519 | |
| 1520 | |
| 1521 | /*-------------------- memcpy_chk --------------------*/ |
| 1522 | |
| 1523 | #define GLIBC26___MEMCPY_CHK(soname, fnname) \ |
| 1524 | void* VG_REPLACE_FUNCTION_EZU(20300,soname,fnname) \ |
| 1525 | (void* dst, const void* src, SizeT len, SizeT dstlen ); \ |
| 1526 | void* VG_REPLACE_FUNCTION_EZU(20300,soname,fnname) \ |
| 1527 | (void* dst, const void* src, SizeT len, SizeT dstlen ) \ |
| 1528 | { \ |
| 1529 | register HChar *d; \ |
| 1530 | register const HChar *s; \ |
| 1531 | \ |
| 1532 | if (dstlen < len) goto badness; \ |
| 1533 | \ |
| 1534 | if (len == 0) \ |
| 1535 | return dst; \ |
| 1536 | \ |
| 1537 | if (is_overlap(dst, src, len, len)) \ |
| 1538 | RECORD_OVERLAP_ERROR("memcpy_chk", dst, src, len); \ |
| 1539 | \ |
| 1540 | if ( dst > src ) { \ |
| 1541 | d = (HChar *)dst + len - 1; \ |
| 1542 | s = (const HChar *)src + len - 1; \ |
| 1543 | while ( len-- ) { \ |
| 1544 | *d-- = *s--; \ |
| 1545 | } \ |
| 1546 | } else if ( dst < src ) { \ |
| 1547 | d = (HChar *)dst; \ |
| 1548 | s = (const HChar *)src; \ |
| 1549 | while ( len-- ) { \ |
| 1550 | *d++ = *s++; \ |
| 1551 | } \ |
| 1552 | } \ |
| 1553 | return dst; \ |
| 1554 | badness: \ |
| 1555 | VALGRIND_PRINTF_BACKTRACE( \ |
| 1556 | "*** memcpy_chk: buffer overflow detected ***: " \ |
| 1557 | "program terminated\n"); \ |
florian | 77ae999 | 2015-08-09 20:29:18 +0000 | [diff] [blame] | 1558 | my_exit(1); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1559 | /*NOTREACHED*/ \ |
| 1560 | return NULL; \ |
| 1561 | } |
| 1562 | |
| 1563 | #if defined(VGO_linux) |
| 1564 | GLIBC26___MEMCPY_CHK(VG_Z_LIBC_SONAME, __memcpy_chk) |
| 1565 | |
| 1566 | #elif defined(VGO_darwin) |
| 1567 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1568 | #elif defined(VGO_solaris) |
| 1569 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1570 | #endif |
| 1571 | |
| 1572 | |
| 1573 | /*---------------------- strstr ----------------------*/ |
| 1574 | |
| 1575 | #define STRSTR(soname, fnname) \ |
| 1576 | char* VG_REPLACE_FUNCTION_EZU(20310,soname,fnname) \ |
| 1577 | (const char* haystack, const char* needle); \ |
| 1578 | char* VG_REPLACE_FUNCTION_EZU(20310,soname,fnname) \ |
| 1579 | (const char* haystack, const char* needle) \ |
| 1580 | { \ |
| 1581 | const HChar* h = haystack; \ |
| 1582 | const HChar* n = needle; \ |
| 1583 | \ |
| 1584 | /* find the length of n, not including terminating zero */ \ |
| 1585 | UWord nlen = 0; \ |
| 1586 | while (n[nlen]) nlen++; \ |
| 1587 | \ |
| 1588 | /* if n is the empty string, match immediately. */ \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1589 | if (nlen == 0) return CONST_CAST(HChar *,h); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1590 | \ |
| 1591 | /* assert(nlen >= 1); */ \ |
| 1592 | HChar n0 = n[0]; \ |
| 1593 | \ |
| 1594 | while (1) { \ |
| 1595 | const HChar hh = *h; \ |
| 1596 | if (hh == 0) return NULL; \ |
| 1597 | if (hh != n0) { h++; continue; } \ |
| 1598 | \ |
| 1599 | UWord i; \ |
| 1600 | for (i = 0; i < nlen; i++) { \ |
| 1601 | if (n[i] != h[i]) \ |
| 1602 | break; \ |
| 1603 | } \ |
| 1604 | /* assert(i >= 0 && i <= nlen); */ \ |
| 1605 | if (i == nlen) \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1606 | return CONST_CAST(HChar *,h); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1607 | \ |
| 1608 | h++; \ |
| 1609 | } \ |
| 1610 | } |
| 1611 | |
| 1612 | #if defined(VGO_linux) |
| 1613 | STRSTR(VG_Z_LIBC_SONAME, strstr) |
| 1614 | STRSTR(VG_Z_LIBC_SONAME, __strstr_sse2) |
| 1615 | STRSTR(VG_Z_LIBC_SONAME, __strstr_sse42) |
| 1616 | |
| 1617 | #elif defined(VGO_darwin) |
| 1618 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1619 | #elif defined(VGO_solaris) |
| 1620 | STRSTR(VG_Z_LIBC_SONAME, strstr) |
| 1621 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1622 | #endif |
| 1623 | |
| 1624 | |
| 1625 | /*---------------------- strpbrk ----------------------*/ |
| 1626 | |
| 1627 | #define STRPBRK(soname, fnname) \ |
| 1628 | char* VG_REPLACE_FUNCTION_EZU(20320,soname,fnname) \ |
| 1629 | (const char* sV, const char* acceptV); \ |
| 1630 | char* VG_REPLACE_FUNCTION_EZU(20320,soname,fnname) \ |
| 1631 | (const char* sV, const char* acceptV) \ |
| 1632 | { \ |
| 1633 | const HChar* s = sV; \ |
| 1634 | const HChar* accept = acceptV; \ |
| 1635 | \ |
| 1636 | /* find the length of 'accept', not including terminating zero */ \ |
| 1637 | UWord nacc = 0; \ |
| 1638 | while (accept[nacc]) nacc++; \ |
| 1639 | \ |
| 1640 | /* if n is the empty string, fail immediately. */ \ |
| 1641 | if (nacc == 0) return NULL; \ |
| 1642 | \ |
| 1643 | /* assert(nacc >= 1); */ \ |
| 1644 | while (1) { \ |
| 1645 | UWord i; \ |
| 1646 | HChar sc = *s; \ |
| 1647 | if (sc == 0) \ |
| 1648 | break; \ |
| 1649 | for (i = 0; i < nacc; i++) { \ |
| 1650 | if (sc == accept[i]) \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1651 | return CONST_CAST(HChar *,s); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1652 | } \ |
| 1653 | s++; \ |
| 1654 | } \ |
| 1655 | \ |
| 1656 | return NULL; \ |
| 1657 | } |
| 1658 | |
| 1659 | #if defined(VGO_linux) |
| 1660 | STRPBRK(VG_Z_LIBC_SONAME, strpbrk) |
| 1661 | |
| 1662 | #elif defined(VGO_darwin) |
| 1663 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1664 | #elif defined(VGO_solaris) |
| 1665 | STRPBRK(VG_Z_LIBC_SONAME, strpbrk) |
| 1666 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1667 | #endif |
| 1668 | |
| 1669 | |
| 1670 | /*---------------------- strcspn ----------------------*/ |
| 1671 | |
| 1672 | #define STRCSPN(soname, fnname) \ |
| 1673 | SizeT VG_REPLACE_FUNCTION_EZU(20330,soname,fnname) \ |
| 1674 | (const char* sV, const char* rejectV); \ |
| 1675 | SizeT VG_REPLACE_FUNCTION_EZU(20330,soname,fnname) \ |
| 1676 | (const char* sV, const char* rejectV) \ |
| 1677 | { \ |
| 1678 | const HChar* s = sV; \ |
| 1679 | const HChar* reject = rejectV; \ |
| 1680 | \ |
| 1681 | /* find the length of 'reject', not including terminating zero */ \ |
| 1682 | UWord nrej = 0; \ |
| 1683 | while (reject[nrej]) nrej++; \ |
| 1684 | \ |
| 1685 | UWord len = 0; \ |
| 1686 | while (1) { \ |
| 1687 | UWord i; \ |
| 1688 | HChar sc = *s; \ |
| 1689 | if (sc == 0) \ |
| 1690 | break; \ |
| 1691 | for (i = 0; i < nrej; i++) { \ |
| 1692 | if (sc == reject[i]) \ |
| 1693 | break; \ |
| 1694 | } \ |
| 1695 | /* assert(i >= 0 && i <= nrej); */ \ |
| 1696 | if (i < nrej) \ |
| 1697 | break; \ |
| 1698 | s++; \ |
| 1699 | len++; \ |
| 1700 | } \ |
| 1701 | \ |
| 1702 | return len; \ |
| 1703 | } |
| 1704 | |
| 1705 | #if defined(VGO_linux) |
| 1706 | STRCSPN(VG_Z_LIBC_SONAME, strcspn) |
| 1707 | |
| 1708 | #elif defined(VGO_darwin) |
| 1709 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1710 | #elif defined(VGO_solaris) |
| 1711 | STRCSPN(VG_Z_LIBC_SONAME, strcspn) |
| 1712 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1713 | #endif |
| 1714 | |
| 1715 | |
| 1716 | /*---------------------- strspn ----------------------*/ |
| 1717 | |
| 1718 | #define STRSPN(soname, fnname) \ |
| 1719 | SizeT VG_REPLACE_FUNCTION_EZU(20340,soname,fnname) \ |
| 1720 | (const char* sV, const char* acceptV); \ |
| 1721 | SizeT VG_REPLACE_FUNCTION_EZU(20340,soname,fnname) \ |
| 1722 | (const char* sV, const char* acceptV) \ |
| 1723 | { \ |
| 1724 | const UChar* s = (const UChar *)sV; \ |
| 1725 | const UChar* accept = (const UChar *)acceptV; \ |
| 1726 | \ |
| 1727 | /* find the length of 'accept', not including terminating zero */ \ |
| 1728 | UWord nacc = 0; \ |
| 1729 | while (accept[nacc]) nacc++; \ |
| 1730 | if (nacc == 0) return 0; \ |
| 1731 | \ |
| 1732 | UWord len = 0; \ |
| 1733 | while (1) { \ |
| 1734 | UWord i; \ |
| 1735 | HChar sc = *s; \ |
| 1736 | if (sc == 0) \ |
| 1737 | break; \ |
| 1738 | for (i = 0; i < nacc; i++) { \ |
| 1739 | if (sc == accept[i]) \ |
| 1740 | break; \ |
| 1741 | } \ |
| 1742 | /* assert(i >= 0 && i <= nacc); */ \ |
| 1743 | if (i == nacc) \ |
| 1744 | break; \ |
| 1745 | s++; \ |
| 1746 | len++; \ |
| 1747 | } \ |
| 1748 | \ |
| 1749 | return len; \ |
| 1750 | } |
| 1751 | |
| 1752 | #if defined(VGO_linux) |
| 1753 | STRSPN(VG_Z_LIBC_SONAME, strspn) |
| 1754 | |
| 1755 | #elif defined(VGO_darwin) |
| 1756 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1757 | #elif defined(VGO_solaris) |
| 1758 | STRSPN(VG_Z_LIBC_SONAME, strspn) |
| 1759 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1760 | #endif |
| 1761 | |
| 1762 | |
| 1763 | /*---------------------- strcasestr ----------------------*/ |
| 1764 | |
| 1765 | #define STRCASESTR(soname, fnname) \ |
| 1766 | char* VG_REPLACE_FUNCTION_EZU(20350,soname,fnname) \ |
| 1767 | (const char* haystack, const char* needle); \ |
| 1768 | char* VG_REPLACE_FUNCTION_EZU(20350,soname,fnname) \ |
| 1769 | (const char* haystack, const char* needle) \ |
| 1770 | { \ |
| 1771 | extern int tolower(int); \ |
| 1772 | const HChar* h = haystack; \ |
| 1773 | const HChar* n = needle; \ |
| 1774 | \ |
| 1775 | /* find the length of n, not including terminating zero */ \ |
| 1776 | UWord nlen = 0; \ |
| 1777 | while (n[nlen]) nlen++; \ |
| 1778 | \ |
| 1779 | /* if n is the empty string, match immediately. */ \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1780 | if (nlen == 0) return CONST_CAST(HChar *,h); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1781 | \ |
| 1782 | /* assert(nlen >= 1); */ \ |
| 1783 | UChar n0 = tolower(n[0]); \ |
| 1784 | \ |
| 1785 | while (1) { \ |
| 1786 | UChar hh = tolower(*h); \ |
| 1787 | if (hh == 0) return NULL; \ |
| 1788 | if (hh != n0) { h++; continue; } \ |
| 1789 | \ |
| 1790 | UWord i; \ |
| 1791 | for (i = 0; i < nlen; i++) { \ |
| 1792 | if (tolower(n[i]) != tolower(h[i])) \ |
| 1793 | break; \ |
| 1794 | } \ |
| 1795 | /* assert(i >= 0 && i <= nlen); */ \ |
| 1796 | if (i == nlen) \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1797 | return CONST_CAST(HChar *,h); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1798 | \ |
| 1799 | h++; \ |
| 1800 | } \ |
| 1801 | } |
| 1802 | |
| 1803 | #if defined(VGO_linux) |
sewardj | 26ed419 | 2014-11-04 17:44:21 +0000 | [diff] [blame] | 1804 | # if !defined(VGPV_arm_linux_android) \ |
| 1805 | && !defined(VGPV_x86_linux_android) \ |
| 1806 | && !defined(VGPV_mips32_linux_android) \ |
| 1807 | && !defined(VGPV_arm64_linux_android) |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1808 | STRCASESTR(VG_Z_LIBC_SONAME, strcasestr) |
| 1809 | # endif |
| 1810 | |
| 1811 | #elif defined(VGO_darwin) |
| 1812 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1813 | #elif defined(VGO_solaris) |
| 1814 | STRCASESTR(VG_Z_LIBC_SONAME, strcasestr) |
| 1815 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1816 | #endif |
| 1817 | |
| 1818 | |
| 1819 | /*---------------------- wcslen ----------------------*/ |
| 1820 | |
| 1821 | // This is a wchar_t equivalent to strlen. Unfortunately |
| 1822 | // we don't have wchar_t available here, but it looks like |
| 1823 | // a 32 bit int on Linux. I don't know if that is also |
| 1824 | // valid on MacOSX. |
| 1825 | |
| 1826 | #define WCSLEN(soname, fnname) \ |
| 1827 | SizeT VG_REPLACE_FUNCTION_EZU(20370,soname,fnname) \ |
| 1828 | ( const UInt* str ); \ |
| 1829 | SizeT VG_REPLACE_FUNCTION_EZU(20370,soname,fnname) \ |
| 1830 | ( const UInt* str ) \ |
| 1831 | { \ |
| 1832 | SizeT i = 0; \ |
| 1833 | while (str[i] != 0) i++; \ |
| 1834 | return i; \ |
| 1835 | } |
| 1836 | |
| 1837 | #if defined(VGO_linux) |
| 1838 | WCSLEN(VG_Z_LIBC_SONAME, wcslen) |
| 1839 | |
| 1840 | #elif defined(VGO_darwin) |
| 1841 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1842 | #elif defined(VGO_solaris) |
| 1843 | WCSLEN(VG_Z_LIBC_SONAME, wcslen) |
| 1844 | |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1845 | #endif |
| 1846 | |
| 1847 | /*---------------------- wcscmp ----------------------*/ |
| 1848 | |
| 1849 | // This is a wchar_t equivalent to strcmp. We don't |
| 1850 | // have wchar_t available here, but in the GNU C Library |
| 1851 | // wchar_t is always 32 bits wide and wcscmp uses signed |
| 1852 | // comparison, not unsigned as in strcmp function. |
| 1853 | |
| 1854 | #define WCSCMP(soname, fnname) \ |
| 1855 | int VG_REPLACE_FUNCTION_EZU(20380,soname,fnname) \ |
| 1856 | ( const Int* s1, const Int* s2 ); \ |
| 1857 | int VG_REPLACE_FUNCTION_EZU(20380,soname,fnname) \ |
| 1858 | ( const Int* s1, const Int* s2 ) \ |
| 1859 | { \ |
| 1860 | register Int c1; \ |
| 1861 | register Int c2; \ |
| 1862 | while (True) { \ |
| 1863 | c1 = *s1; \ |
| 1864 | c2 = *s2; \ |
| 1865 | if (c1 != c2) break; \ |
| 1866 | if (c1 == 0) break; \ |
| 1867 | s1++; s2++; \ |
| 1868 | } \ |
| 1869 | if (c1 < c2) return -1; \ |
| 1870 | if (c1 > c2) return 1; \ |
| 1871 | return 0; \ |
| 1872 | } |
| 1873 | |
| 1874 | #if defined(VGO_linux) |
| 1875 | WCSCMP(VG_Z_LIBC_SONAME, wcscmp) |
| 1876 | #endif |
| 1877 | |
| 1878 | /*---------------------- wcscpy ----------------------*/ |
| 1879 | |
| 1880 | // This is a wchar_t equivalent to strcpy. We don't |
| 1881 | // have wchar_t available here, but in the GNU C Library |
| 1882 | // wchar_t is always 32 bits wide. |
| 1883 | |
| 1884 | #define WCSCPY(soname, fnname) \ |
| 1885 | Int* VG_REPLACE_FUNCTION_EZU(20390,soname,fnname) \ |
| 1886 | ( Int* dst, const Int* src ); \ |
| 1887 | Int* VG_REPLACE_FUNCTION_EZU(20390,soname,fnname) \ |
| 1888 | ( Int* dst, const Int* src ) \ |
| 1889 | { \ |
| 1890 | const Int* src_orig = src; \ |
| 1891 | Int* dst_orig = dst; \ |
| 1892 | \ |
| 1893 | while (*src) *dst++ = *src++; \ |
| 1894 | *dst = 0; \ |
| 1895 | \ |
| 1896 | /* This checks for overlap after copying, unavoidable without */ \ |
| 1897 | /* pre-counting length... should be ok */ \ |
| 1898 | if (is_overlap(dst_orig, \ |
| 1899 | src_orig, \ |
| 1900 | (Addr)dst-(Addr)dst_orig+1, \ |
| 1901 | (Addr)src-(Addr)src_orig+1)) \ |
| 1902 | RECORD_OVERLAP_ERROR("wcscpy", dst_orig, src_orig, 0); \ |
| 1903 | \ |
| 1904 | return dst_orig; \ |
| 1905 | } |
| 1906 | |
| 1907 | #if defined(VGO_linux) |
| 1908 | WCSCPY(VG_Z_LIBC_SONAME, wcscpy) |
| 1909 | #endif |
| 1910 | |
| 1911 | |
| 1912 | /*---------------------- wcschr ----------------------*/ |
| 1913 | |
| 1914 | // This is a wchar_t equivalent to strchr. We don't |
| 1915 | // have wchar_t available here, but in the GNU C Library |
| 1916 | // wchar_t is always 32 bits wide. |
| 1917 | |
| 1918 | #define WCSCHR(soname, fnname) \ |
| 1919 | Int* VG_REPLACE_FUNCTION_EZU(20400,soname,fnname) ( const Int* s, Int c ); \ |
| 1920 | Int* VG_REPLACE_FUNCTION_EZU(20400,soname,fnname) ( const Int* s, Int c ) \ |
| 1921 | { \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1922 | const Int* p = s; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1923 | while (True) { \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1924 | if (*p == c) return CONST_CAST(Int *,p); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1925 | if (*p == 0) return NULL; \ |
| 1926 | p++; \ |
| 1927 | } \ |
| 1928 | } |
| 1929 | |
| 1930 | #if defined(VGO_linux) |
| 1931 | WCSCHR(VG_Z_LIBC_SONAME, wcschr) |
| 1932 | #endif |
| 1933 | /*---------------------- wcsrchr ----------------------*/ |
| 1934 | |
| 1935 | // This is a wchar_t equivalent to strrchr. We don't |
| 1936 | // have wchar_t available here, but in the GNU C Library |
| 1937 | // wchar_t is always 32 bits wide. |
| 1938 | |
| 1939 | #define WCSRCHR(soname, fnname) \ |
| 1940 | Int* VG_REPLACE_FUNCTION_EZU(20410,soname,fnname)( const Int* s, Int c ); \ |
| 1941 | Int* VG_REPLACE_FUNCTION_EZU(20410,soname,fnname)( const Int* s, Int c ) \ |
| 1942 | { \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1943 | const Int* p = s; \ |
| 1944 | const Int* last = NULL; \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1945 | while (True) { \ |
| 1946 | if (*p == c) last = p; \ |
florian | 70a5de1 | 2014-10-22 12:53:16 +0000 | [diff] [blame] | 1947 | if (*p == 0) return CONST_CAST(Int *,last); \ |
bart | 9c7779b | 2013-11-24 17:48:13 +0000 | [diff] [blame] | 1948 | p++; \ |
| 1949 | } \ |
| 1950 | } |
| 1951 | |
| 1952 | #if defined(VGO_linux) |
| 1953 | WCSRCHR(VG_Z_LIBC_SONAME, wcsrchr) |
| 1954 | #endif |
| 1955 | |
| 1956 | /*------------------------------------------------------------*/ |
| 1957 | /*--- Improve definedness checking of process environment ---*/ |
| 1958 | /*------------------------------------------------------------*/ |
| 1959 | |
| 1960 | #if defined(VGO_linux) |
| 1961 | |
| 1962 | /* If these wind up getting generated via a macro, so that multiple |
| 1963 | versions of each function exist (as above), use the _EZU variants |
| 1964 | to assign equivalance class tags. */ |
| 1965 | |
| 1966 | /*---------------------- putenv ----------------------*/ |
| 1967 | |
| 1968 | int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, putenv) (char* string); |
| 1969 | int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, putenv) (char* string) |
| 1970 | { |
| 1971 | OrigFn fn; |
| 1972 | Word result; |
| 1973 | const HChar* p = string; |
| 1974 | VALGRIND_GET_ORIG_FN(fn); |
| 1975 | /* Now by walking over the string we magically produce |
| 1976 | traces when hitting undefined memory. */ |
| 1977 | if (p) |
| 1978 | while (*p++) |
| 1979 | __asm__ __volatile__("" ::: "memory"); |
| 1980 | CALL_FN_W_W(result, fn, string); |
| 1981 | return result; |
| 1982 | } |
| 1983 | |
| 1984 | |
| 1985 | /*---------------------- unsetenv ----------------------*/ |
| 1986 | |
| 1987 | int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, unsetenv) (const char* name); |
| 1988 | int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, unsetenv) (const char* name) |
| 1989 | { |
| 1990 | OrigFn fn; |
| 1991 | Word result; |
| 1992 | const HChar* p = name; |
| 1993 | VALGRIND_GET_ORIG_FN(fn); |
| 1994 | /* Now by walking over the string we magically produce |
| 1995 | traces when hitting undefined memory. */ |
| 1996 | if (p) |
| 1997 | while (*p++) |
| 1998 | __asm__ __volatile__("" ::: "memory"); |
| 1999 | CALL_FN_W_W(result, fn, name); |
| 2000 | return result; |
| 2001 | } |
| 2002 | |
| 2003 | |
| 2004 | /*---------------------- setenv ----------------------*/ |
| 2005 | |
| 2006 | /* setenv */ |
| 2007 | int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, setenv) |
| 2008 | (const char* name, const char* value, int overwrite); |
| 2009 | int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, setenv) |
| 2010 | (const char* name, const char* value, int overwrite) |
| 2011 | { |
| 2012 | OrigFn fn; |
| 2013 | Word result; |
| 2014 | const HChar* p; |
| 2015 | VALGRIND_GET_ORIG_FN(fn); |
| 2016 | /* Now by walking over the string we magically produce |
| 2017 | traces when hitting undefined memory. */ |
| 2018 | if (name) |
| 2019 | for (p = name; *p; p++) |
| 2020 | __asm__ __volatile__("" ::: "memory"); |
| 2021 | if (value) |
| 2022 | for (p = value; *p; p++) |
| 2023 | __asm__ __volatile__("" ::: "memory"); |
| 2024 | (void) VALGRIND_CHECK_VALUE_IS_DEFINED (overwrite); |
| 2025 | CALL_FN_W_WWW(result, fn, name, value, overwrite); |
| 2026 | return result; |
| 2027 | } |
| 2028 | |
| 2029 | #endif /* defined(VGO_linux) */ |
| 2030 | |
| 2031 | /*--------------------------------------------------------------------*/ |
| 2032 | /*--- end ---*/ |
| 2033 | /*--------------------------------------------------------------------*/ |