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debugging/02_day/valgrind/valgrind-3.11.0/shared/vg_replace_strmem.c
jikim 0b589c7986 first commit
2015-12-13 22:34:58 +09:00

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/*--------------------------------------------------------------------*/
/*--- Replacements for strcpy(), memcpy() et al, which run on the ---*/
/*--- simulated CPU. ---*/
/*--- vg_replace_strmem.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind.
Copyright (C) 2000-2015 Julian Seward
jseward@acm.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
*/
#include "pub_tool_basics.h"
#include "pub_tool_poolalloc.h"
#include "pub_tool_hashtable.h"
#include "pub_tool_redir.h"
#include "pub_tool_tooliface.h"
#include "pub_tool_clreq.h"
/* ---------------------------------------------------------------------
We have our own versions of these functions for two reasons:
(a) it allows us to do overlap checking
(b) some of the normal versions are hyper-optimised, which fools
Memcheck and cause spurious value warnings. Our versions are
simpler.
(c) the glibc SSE-variants can read past the end of the input data
ranges. This can cause false-positive Memcheck / Helgrind / DRD
reports.
Note that overenthusiastic use of PLT bypassing by the glibc people also
means that we need to patch multiple versions of some of the functions to
our own implementations.
THEY RUN ON THE SIMD CPU!
------------------------------------------------------------------ */
/* Assignment of behavioural equivalence class tags: 2NNNP is intended
to be reserved for str/mem intercepts. Current usage:
20010 STRRCHR
20020 STRCHR
20030 STRCAT
20040 STRNCAT
20050 STRLCAT
20060 STRNLEN
20070 STRLEN
20080 STRCPY
20090 STRNCPY
20100 STRLCPY
20110 STRNCMP
20120 STRCASECMP
20130 STRNCASECMP
20140 STRCASECMP_L
20150 STRNCASECMP_L
20160 STRCMP
20170 MEMCHR
20180 MEMCPY if there's a conflict between memcpy and
20181 MEMMOVE memmove, prefer memmove
20190 MEMCMP
20200 STPCPY
20210 MEMSET
2022P unused (was previously MEMMOVE)
20230 BCOPY
20240 GLIBC25___MEMMOVE_CHK
20250 GLIBC232_STRCHRNUL
20260 GLIBC232_RAWMEMCHR
20270 GLIBC25___STRCPY_CHK
20280 GLIBC25___STPCPY_CHK
20290 GLIBC25_MEMPCPY
20300 GLIBC26___MEMCPY_CHK
20310 STRSTR
20320 STRPBRK
20330 STRCSPN
20340 STRSPN
20350 STRCASESTR
20360 MEMRCHR
20370 WCSLEN
20380 WCSCMP
20390 WCSCPY
20400 WCSCHR
20410 WCSRCHR
20420 STPNCPY
*/
#if defined(VGO_solaris)
/*
Detour functions in the libc and the runtime linker. If a function isn't
much optimized (and no overlap checking is necessary) then redir the
function only in the libc. This way we can keep stacktraces in the tests
consistent.
*/
#endif
/* Figure out if [dst .. dst+dstlen-1] overlaps with
[src .. src+srclen-1].
We assume that the address ranges do not wrap around
(which is safe since on Linux addresses >= 0xC0000000
are not accessible and the program will segfault in this
circumstance, presumably).
*/
static inline
Bool is_overlap ( void* dst, const void* src, SizeT dstlen, SizeT srclen )
{
Addr loS, hiS, loD, hiD;
if (dstlen == 0 || srclen == 0)
return False;
loS = (Addr)src;
loD = (Addr)dst;
hiS = loS + srclen - 1;
hiD = loD + dstlen - 1;
/* So figure out if [loS .. hiS] overlaps with [loD .. hiD]. */
if (loS < loD) {
return !(hiS < loD);
}
else if (loD < loS) {
return !(hiD < loS);
}
else {
/* They start at same place. Since we know neither of them has
zero length, they must overlap. */
return True;
}
}
/* Call here to exit if we can't continue. On Android we can't call
_exit for some reason, so we have to blunt-instrument it. */
__attribute__ ((__noreturn__))
static inline void my_exit ( int x )
{
# if defined(VGPV_arm_linux_android) || defined(VGPV_mips32_linux_android) \
|| defined(VGPV_arm64_linux_android)
__asm__ __volatile__(".word 0xFFFFFFFF");
while (1) {}
# elif defined(VGPV_x86_linux_android)
__asm__ __volatile__("ud2");
while (1) {}
# else
extern __attribute__ ((__noreturn__)) void _exit(int status);
_exit(x);
# endif
}
// This is a macro rather than a function because we don't want to have an
// extra function in the stack trace.
#ifndef RECORD_OVERLAP_ERROR
#define RECORD_OVERLAP_ERROR(s, src, dst, len) do { } while (0)
#endif
#ifndef VALGRIND_CHECK_VALUE_IS_DEFINED
#define VALGRIND_CHECK_VALUE_IS_DEFINED(__lvalue) 1
#endif
/*---------------------- strrchr ----------------------*/
#define STRRCHR(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20010,soname,fnname)( const char* s, int c ); \
char* VG_REPLACE_FUNCTION_EZU(20010,soname,fnname)( const char* s, int c ) \
{ \
HChar ch = (HChar)c; \
const HChar* p = s; \
const HChar* last = NULL; \
while (True) { \
if (*p == ch) last = p; \
if (*p == 0) return CONST_CAST(HChar *,last); \
p++; \
} \
}
// Apparently rindex() is the same thing as strrchr()
#if defined(VGO_linux)
STRRCHR(VG_Z_LIBC_SONAME, strrchr)
STRRCHR(VG_Z_LIBC_SONAME, rindex)
STRRCHR(VG_Z_LIBC_SONAME, __GI_strrchr)
STRRCHR(VG_Z_LIBC_SONAME, __strrchr_sse2)
STRRCHR(VG_Z_LIBC_SONAME, __strrchr_sse2_no_bsf)
STRRCHR(VG_Z_LIBC_SONAME, __strrchr_sse42)
STRRCHR(VG_Z_LD_LINUX_SO_2, rindex)
#if defined(VGPV_arm_linux_android) || defined(VGPV_x86_linux_android) \
|| defined(VGPV_mips32_linux_android)
STRRCHR(NONE, __dl_strrchr); /* in /system/bin/linker */
#endif
#elif defined(VGO_darwin)
//STRRCHR(VG_Z_LIBC_SONAME, strrchr)
//STRRCHR(VG_Z_LIBC_SONAME, rindex)
//STRRCHR(VG_Z_DYLD, strrchr)
//STRRCHR(VG_Z_DYLD, rindex)
STRRCHR(VG_Z_LIBC_SONAME, strrchr)
# if DARWIN_VERS >= DARWIN_10_9
STRRCHR(libsystemZucZddylib, strrchr)
# endif
#elif defined(VGO_solaris)
STRRCHR(VG_Z_LIBC_SONAME, strrchr)
STRRCHR(VG_Z_LIBC_SONAME, rindex)
STRRCHR(VG_Z_LD_SO_1, strrchr)
#endif
/*---------------------- strchr ----------------------*/
#define STRCHR(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20020,soname,fnname) ( const char* s, int c ); \
char* VG_REPLACE_FUNCTION_EZU(20020,soname,fnname) ( const char* s, int c ) \
{ \
HChar ch = (HChar)c ; \
const HChar* p = s; \
while (True) { \
if (*p == ch) return CONST_CAST(HChar *,p); \
if (*p == 0) return NULL; \
p++; \
} \
}
// Apparently index() is the same thing as strchr()
#if defined(VGO_linux)
STRCHR(VG_Z_LIBC_SONAME, strchr)
STRCHR(VG_Z_LIBC_SONAME, __GI_strchr)
STRCHR(VG_Z_LIBC_SONAME, __strchr_sse2)
STRCHR(VG_Z_LIBC_SONAME, __strchr_sse2_no_bsf)
STRCHR(VG_Z_LIBC_SONAME, index)
# if !defined(VGP_x86_linux)
STRCHR(VG_Z_LD_LINUX_SO_2, strchr)
STRCHR(VG_Z_LD_LINUX_SO_2, index)
STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, strchr)
STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, index)
# endif
#elif defined(VGO_darwin)
STRCHR(VG_Z_LIBC_SONAME, strchr)
# if DARWIN_VERS == DARWIN_10_9
STRCHR(libsystemZuplatformZddylib, _platform_strchr)
# endif
# if DARWIN_VERS >= DARWIN_10_10
/* _platform_strchr$VARIANT$Generic */
STRCHR(libsystemZuplatformZddylib, _platform_strchr$VARIANT$Generic)
/* _platform_strchr$VARIANT$Haswell */
STRCHR(libsystemZuplatformZddylib, _platform_strchr$VARIANT$Haswell)
# endif
#elif defined(VGO_solaris)
STRCHR(VG_Z_LIBC_SONAME, strchr)
STRCHR(VG_Z_LIBC_SONAME, index)
STRCHR(VG_Z_LD_SO_1, strchr)
#endif
/*---------------------- strcat ----------------------*/
#define STRCAT(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20030,soname,fnname) \
( char* dst, const char* src ); \
char* VG_REPLACE_FUNCTION_EZU(20030,soname,fnname) \
( char* dst, const char* src ) \
{ \
const HChar* src_orig = src; \
HChar* dst_orig = dst; \
while (*dst) dst++; \
while (*src) *dst++ = *src++; \
*dst = 0; \
\
/* This is a bit redundant, I think; any overlap and the strcat will */ \
/* go forever... or until a seg fault occurs. */ \
if (is_overlap(dst_orig, \
src_orig, \
(Addr)dst-(Addr)dst_orig+1, \
(Addr)src-(Addr)src_orig+1)) \
RECORD_OVERLAP_ERROR("strcat", dst_orig, src_orig, 0); \
\
return dst_orig; \
}
#if defined(VGO_linux)
STRCAT(VG_Z_LIBC_SONAME, strcat)
STRCAT(VG_Z_LIBC_SONAME, __GI_strcat)
#elif defined(VGO_darwin)
//STRCAT(VG_Z_LIBC_SONAME, strcat)
#elif defined(VGO_solaris)
STRCAT(VG_Z_LIBC_SONAME, strcat)
STRCAT(VG_Z_LD_SO_1, strcat)
#endif
/*---------------------- strncat ----------------------*/
#define STRNCAT(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20040,soname,fnname) \
( char* dst, const char* src, SizeT n ); \
char* VG_REPLACE_FUNCTION_EZU(20040,soname,fnname) \
( char* dst, const char* src, SizeT n ) \
{ \
const HChar* src_orig = src; \
HChar* dst_orig = dst; \
SizeT m = 0; \
\
while (*dst) dst++; \
while (m < n && *src) { m++; *dst++ = *src++; } /* concat <= n chars */ \
*dst = 0; /* always add null */ \
\
/* This checks for overlap after copying, unavoidable without */ \
/* pre-counting lengths... should be ok */ \
if (is_overlap(dst_orig, \
src_orig, \
(Addr)dst-(Addr)dst_orig+1, \
(Addr)src-(Addr)src_orig+1)) \
RECORD_OVERLAP_ERROR("strncat", dst_orig, src_orig, n); \
\
return dst_orig; \
}
#if defined(VGO_linux)
STRNCAT(VG_Z_LIBC_SONAME, strncat)
#elif defined(VGO_darwin)
//STRNCAT(VG_Z_LIBC_SONAME, strncat)
//STRNCAT(VG_Z_DYLD, strncat)
#elif defined(VGO_solaris)
STRNCAT(VG_Z_LIBC_SONAME, strncat)
#endif
/*---------------------- strlcat ----------------------*/
/* Append src to dst. n is the size of dst's buffer. dst is guaranteed
to be nul-terminated after the copy, unless n <= strlen(dst_orig).
Returns min(n, strlen(dst_orig)) + strlen(src_orig).
Truncation occurred if retval >= n.
*/
#define STRLCAT(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_EZU(20050,soname,fnname) \
( char* dst, const char* src, SizeT n ); \
SizeT VG_REPLACE_FUNCTION_EZU(20050,soname,fnname) \
( char* dst, const char* src, SizeT n ) \
{ \
const HChar* src_orig = src; \
HChar* dst_orig = dst; \
SizeT m = 0; \
\
while (m < n && *dst) { m++; dst++; } \
if (m < n) { \
/* Fill as far as dst_orig[n-2], then nul-terminate. */ \
while (m < n-1 && *src) { m++; *dst++ = *src++; } \
*dst = 0; \
} else { \
/* No space to copy anything to dst. m == n */ \
} \
/* Finish counting min(n, strlen(dst_orig)) + strlen(src_orig) */ \
while (*src) { m++; src++; } \
/* This checks for overlap after copying, unavoidable without */ \
/* pre-counting lengths... should be ok */ \
if (is_overlap(dst_orig, \
src_orig, \
(Addr)dst-(Addr)dst_orig+1, \
(Addr)src-(Addr)src_orig+1)) \
RECORD_OVERLAP_ERROR("strlcat", dst_orig, src_orig, n); \
\
return m; \
}
#if defined(VGO_linux)
#elif defined(VGO_darwin)
//STRLCAT(VG_Z_LIBC_SONAME, strlcat)
//STRLCAT(VG_Z_DYLD, strlcat)
STRLCAT(VG_Z_LIBC_SONAME, strlcat)
#elif defined(VGO_solaris)
STRLCAT(VG_Z_LIBC_SONAME, strlcat)
#endif
/*---------------------- strnlen ----------------------*/
#define STRNLEN(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_EZU(20060,soname,fnname) \
( const char* str, SizeT n ); \
SizeT VG_REPLACE_FUNCTION_EZU(20060,soname,fnname) \
( const char* str, SizeT n ) \
{ \
SizeT i = 0; \
while (i < n && str[i] != 0) i++; \
return i; \
}
#if defined(VGO_linux)
STRNLEN(VG_Z_LIBC_SONAME, strnlen)
STRNLEN(VG_Z_LIBC_SONAME, __GI_strnlen)
#elif defined(VGO_darwin)
# if DARWIN_VERS == DARWIN_10_9
STRNLEN(libsystemZucZddylib, strnlen)
# endif
#elif defined(VGO_solaris)
STRNLEN(VG_Z_LIBC_SONAME, strnlen)
#endif
/*---------------------- strlen ----------------------*/
// Note that this replacement often doesn't get used because gcc inlines
// calls to strlen() with its own built-in version. This can be very
// confusing if you aren't expecting it. Other small functions in
// this file may also be inline by gcc.
#define STRLEN(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_EZU(20070,soname,fnname) \
( const char* str ); \
SizeT VG_REPLACE_FUNCTION_EZU(20070,soname,fnname) \
( const char* str ) \
{ \
SizeT i = 0; \
while (str[i] != 0) i++; \
return i; \
}
#if defined(VGO_linux)
STRLEN(VG_Z_LIBC_SONAME, strlen)
STRLEN(VG_Z_LIBC_SONAME, __GI_strlen)
STRLEN(VG_Z_LIBC_SONAME, __strlen_sse2)
STRLEN(VG_Z_LIBC_SONAME, __strlen_sse2_no_bsf)
STRLEN(VG_Z_LIBC_SONAME, __strlen_sse42)
STRLEN(VG_Z_LD_LINUX_SO_2, strlen)
STRLEN(VG_Z_LD_LINUX_X86_64_SO_2, strlen)
# if defined(VGPV_arm_linux_android) \
|| defined(VGPV_x86_linux_android) \
|| defined(VGPV_mips32_linux_android)
STRLEN(NONE, __dl_strlen); /* in /system/bin/linker */
# endif
#elif defined(VGO_darwin)
STRLEN(VG_Z_LIBC_SONAME, strlen)
# if DARWIN_VERS >= DARWIN_10_9
STRLEN(libsystemZucZddylib, strlen)
# endif
#elif defined(VGO_solaris)
STRLEN(VG_Z_LIBC_SONAME, strlen)
STRLEN(VG_Z_LD_SO_1, strlen)
#endif
/*---------------------- strcpy ----------------------*/
#define STRCPY(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20080,soname,fnname) \
( char* dst, const char* src ); \
char* VG_REPLACE_FUNCTION_EZU(20080,soname,fnname) \
( char* dst, const char* src ) \
{ \
const HChar* src_orig = src; \
HChar* dst_orig = dst; \
\
while (*src) *dst++ = *src++; \
*dst = 0; \
\
/* This checks for overlap after copying, unavoidable without */ \
/* pre-counting length... should be ok */ \
if (is_overlap(dst_orig, \
src_orig, \
(Addr)dst-(Addr)dst_orig+1, \
(Addr)src-(Addr)src_orig+1)) \
RECORD_OVERLAP_ERROR("strcpy", dst_orig, src_orig, 0); \
\
return dst_orig; \
}
#if defined(VGO_linux)
STRCPY(VG_Z_LIBC_SONAME, strcpy)
STRCPY(VG_Z_LIBC_SONAME, __GI_strcpy)
#elif defined(VGO_darwin)
STRCPY(VG_Z_LIBC_SONAME, strcpy)
# if DARWIN_VERS == DARWIN_10_9
STRCPY(libsystemZucZddylib, strcpy)
# endif
#elif defined(VGO_solaris)
STRCPY(VG_Z_LIBC_SONAME, strcpy)
STRCPY(VG_Z_LD_SO_1, strcpy)
#endif
/*---------------------- strncpy ----------------------*/
#define STRNCPY(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20090,soname,fnname) \
( char* dst, const char* src, SizeT n ); \
char* VG_REPLACE_FUNCTION_EZU(20090,soname,fnname) \
( char* dst, const char* src, SizeT n ) \
{ \
const HChar* src_orig = src; \
HChar* dst_orig = dst; \
SizeT m = 0; \
\
while (m < n && *src) { m++; *dst++ = *src++; } \
/* Check for overlap after copying; all n bytes of dst are relevant, */ \
/* but only m+1 bytes of src if terminator was found */ \
if (is_overlap(dst_orig, src_orig, n, (m < n) ? m+1 : n)) \
RECORD_OVERLAP_ERROR("strncpy", dst, src, n); \
while (m++ < n) *dst++ = 0; /* must pad remainder with nulls */ \
\
return dst_orig; \
}
#if defined(VGO_linux)
STRNCPY(VG_Z_LIBC_SONAME, strncpy)
STRNCPY(VG_Z_LIBC_SONAME, __GI_strncpy)
STRNCPY(VG_Z_LIBC_SONAME, __strncpy_sse2)
STRNCPY(VG_Z_LIBC_SONAME, __strncpy_sse2_unaligned)
#elif defined(VGO_darwin)
STRNCPY(VG_Z_LIBC_SONAME, strncpy)
# if DARWIN_VERS >= DARWIN_10_9
STRNCPY(libsystemZucZddylib, strncpy)
# endif
#elif defined(VGO_solaris)
STRNCPY(VG_Z_LIBC_SONAME, strncpy)
STRNCPY(VG_Z_LD_SO_1, strncpy)
#endif
/*---------------------- strlcpy ----------------------*/
/* Copy up to n-1 bytes from src to dst. Then nul-terminate dst if n > 0.
Returns strlen(src). Does not zero-fill the remainder of dst. */
#define STRLCPY(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_EZU(20100,soname,fnname) \
( char* dst, const char* src, SizeT n ); \
SizeT VG_REPLACE_FUNCTION_EZU(20100,soname,fnname) \
( char* dst, const char* src, SizeT n ) \
{ \
const HChar* src_orig = src; \
HChar* dst_orig = dst; \
SizeT m = 0; \
\
STRLCPY_CHECK_FOR_DSTSIZE_ZERO \
\
while (m < n-1 && *src) { m++; *dst++ = *src++; } \
/* m non-nul bytes have now been copied, and m <= n-1. */ \
/* Check for overlap after copying; all n bytes of dst are relevant, */ \
/* but only m+1 bytes of src if terminator was found */ \
if (is_overlap(dst_orig, src_orig, n, (m < n) ? m+1 : n)) \
RECORD_OVERLAP_ERROR("strlcpy", dst, src, n); \
/* Nul-terminate dst. */ \
if (n > 0) *dst = 0; \
/* Finish counting strlen(src). */ \
while (*src) src++; \
return src - src_orig; \
}
#if defined(VGO_linux)
#if defined(VGPV_arm_linux_android) || defined(VGPV_x86_linux_android) \
|| defined(VGPV_mips32_linux_android)
#define STRLCPY_CHECK_FOR_DSTSIZE_ZERO
STRLCPY(VG_Z_LIBC_SONAME, strlcpy);
#endif
#elif defined(VGO_darwin)
#define STRLCPY_CHECK_FOR_DSTSIZE_ZERO
//STRLCPY(VG_Z_LIBC_SONAME, strlcpy)
//STRLCPY(VG_Z_DYLD, strlcpy)
STRLCPY(VG_Z_LIBC_SONAME, strlcpy)
#elif defined(VGO_solaris)
/* special case for n == 0 which is undocumented but heavily used */
#define STRLCPY_CHECK_FOR_DSTSIZE_ZERO \
if (n == 0) { \
while (*src) src++; \
return src - src_orig; \
}
STRLCPY(VG_Z_LIBC_SONAME, strlcpy)
#endif
/*---------------------- strncmp ----------------------*/
#define STRNCMP(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20110,soname,fnname) \
( const char* s1, const char* s2, SizeT nmax ); \
int VG_REPLACE_FUNCTION_EZU(20110,soname,fnname) \
( const char* s1, const char* s2, SizeT nmax ) \
{ \
SizeT n = 0; \
while (True) { \
if (n >= nmax) return 0; \
if (*s1 == 0 && *s2 == 0) return 0; \
if (*s1 == 0) return -1; \
if (*s2 == 0) return 1; \
\
if (*(const UChar*)s1 < *(const UChar*)s2) return -1; \
if (*(const UChar*)s1 > *(const UChar*)s2) return 1; \
\
s1++; s2++; n++; \
} \
}
#if defined(VGO_linux)
STRNCMP(VG_Z_LIBC_SONAME, strncmp)
STRNCMP(VG_Z_LIBC_SONAME, __GI_strncmp)
STRNCMP(VG_Z_LIBC_SONAME, __strncmp_sse2)
STRNCMP(VG_Z_LIBC_SONAME, __strncmp_sse42)
#elif defined(VGO_darwin)
STRNCMP(VG_Z_LIBC_SONAME, strncmp)
# if DARWIN_VERS >= DARWIN_10_9
STRNCMP(libsystemZuplatformZddylib, _platform_strncmp)
# endif
#elif defined(VGO_solaris)
STRNCMP(VG_Z_LIBC_SONAME, strncmp)
#endif
/*---------------------- strcasecmp ----------------------*/
#define STRCASECMP(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20120,soname,fnname) \
( const char* s1, const char* s2 ); \
int VG_REPLACE_FUNCTION_EZU(20120,soname,fnname) \
( const char* s1, const char* s2 ) \
{ \
extern int tolower(int); \
register UChar c1; \
register UChar c2; \
while (True) { \
c1 = tolower(*(const UChar *)s1); \
c2 = tolower(*(const UChar *)s2); \
if (c1 != c2) break; \
if (c1 == 0) break; \
s1++; s2++; \
} \
if ((UChar)c1 < (UChar)c2) return -1; \
if ((UChar)c1 > (UChar)c2) return 1; \
return 0; \
}
#if defined(VGO_linux)
# if !defined(VGPV_arm_linux_android) \
&& !defined(VGPV_x86_linux_android) \
&& !defined(VGPV_mips32_linux_android) \
&& !defined(VGPV_arm64_linux_android)
STRCASECMP(VG_Z_LIBC_SONAME, strcasecmp)
STRCASECMP(VG_Z_LIBC_SONAME, __GI_strcasecmp)
# endif
#elif defined(VGO_darwin)
//STRCASECMP(VG_Z_LIBC_SONAME, strcasecmp)
#elif defined(VGO_solaris)
STRCASECMP(VG_Z_LIBC_SONAME, strcasecmp)
#endif
/*---------------------- strncasecmp ----------------------*/
#define STRNCASECMP(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20130,soname,fnname) \
( const char* s1, const char* s2, SizeT nmax ); \
int VG_REPLACE_FUNCTION_EZU(20130,soname,fnname) \
( const char* s1, const char* s2, SizeT nmax ) \
{ \
extern int tolower(int); \
SizeT n = 0; \
while (True) { \
if (n >= nmax) return 0; \
if (*s1 == 0 && *s2 == 0) return 0; \
if (*s1 == 0) return -1; \
if (*s2 == 0) return 1; \
\
if (tolower(*(const UChar *)s1) \
< tolower(*(const UChar*)s2)) return -1; \
if (tolower(*(const UChar *)s1) \
> tolower(*(const UChar *)s2)) return 1; \
\
s1++; s2++; n++; \
} \
}
#if defined(VGO_linux)
# if !defined(VGPV_arm_linux_android) \
&& !defined(VGPV_x86_linux_android) \
&& !defined(VGPV_mips32_linux_android) \
&& !defined(VGPV_arm64_linux_android)
STRNCASECMP(VG_Z_LIBC_SONAME, strncasecmp)
STRNCASECMP(VG_Z_LIBC_SONAME, __GI_strncasecmp)
# endif
#elif defined(VGO_darwin)
//STRNCASECMP(VG_Z_LIBC_SONAME, strncasecmp)
//STRNCASECMP(VG_Z_DYLD, strncasecmp)
#elif defined(VGO_solaris)
STRNCASECMP(VG_Z_LIBC_SONAME, strncasecmp)
#endif
/*---------------------- strcasecmp_l ----------------------*/
#define STRCASECMP_L(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20140,soname,fnname) \
( const char* s1, const char* s2, void* locale ); \
int VG_REPLACE_FUNCTION_EZU(20140,soname,fnname) \
( const char* s1, const char* s2, void* locale ) \
{ \
extern int tolower_l(int, void*) __attribute__((weak)); \
register UChar c1; \
register UChar c2; \
while (True) { \
c1 = tolower_l(*(const UChar *)s1, locale); \
c2 = tolower_l(*(const UChar *)s2, locale); \
if (c1 != c2) break; \
if (c1 == 0) break; \
s1++; s2++; \
} \
if ((UChar)c1 < (UChar)c2) return -1; \
if ((UChar)c1 > (UChar)c2) return 1; \
return 0; \
}
#if defined(VGO_linux)
STRCASECMP_L(VG_Z_LIBC_SONAME, strcasecmp_l)
STRCASECMP_L(VG_Z_LIBC_SONAME, __GI_strcasecmp_l)
STRCASECMP_L(VG_Z_LIBC_SONAME, __GI___strcasecmp_l)
#elif defined(VGO_darwin)
//STRCASECMP_L(VG_Z_LIBC_SONAME, strcasecmp_l)
#elif defined(VGO_solaris)
#endif
/*---------------------- strncasecmp_l ----------------------*/
#define STRNCASECMP_L(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20150,soname,fnname) \
( const char* s1, const char* s2, SizeT nmax, void* locale ); \
int VG_REPLACE_FUNCTION_EZU(20150,soname,fnname) \
( const char* s1, const char* s2, SizeT nmax, void* locale ) \
{ \
extern int tolower_l(int, void*) __attribute__((weak)); \
SizeT n = 0; \
while (True) { \
if (n >= nmax) return 0; \
if (*s1 == 0 && *s2 == 0) return 0; \
if (*s1 == 0) return -1; \
if (*s2 == 0) return 1; \
\
if (tolower_l(*(const UChar *)s1, locale) \
< tolower_l(*(const UChar *)s2, locale)) return -1; \
if (tolower_l(*(const UChar *)s1, locale) \
> tolower_l(*(const UChar *)s2, locale)) return 1; \
\
s1++; s2++; n++; \
} \
}
#if defined(VGO_linux)
STRNCASECMP_L(VG_Z_LIBC_SONAME, strncasecmp_l)
STRNCASECMP_L(VG_Z_LIBC_SONAME, __GI_strncasecmp_l)
STRNCASECMP_L(VG_Z_LIBC_SONAME, __GI___strncasecmp_l)
#elif defined(VGO_darwin)
//STRNCASECMP_L(VG_Z_LIBC_SONAME, strncasecmp_l)
//STRNCASECMP_L(VG_Z_DYLD, strncasecmp_l)
#elif defined(VGO_solaris)
#endif
/*---------------------- strcmp ----------------------*/
#define STRCMP(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20160,soname,fnname) \
( const char* s1, const char* s2 ); \
int VG_REPLACE_FUNCTION_EZU(20160,soname,fnname) \
( const char* s1, const char* s2 ) \
{ \
register UChar c1; \
register UChar c2; \
while (True) { \
c1 = *(const UChar *)s1; \
c2 = *(const UChar *)s2; \
if (c1 != c2) break; \
if (c1 == 0) break; \
s1++; s2++; \
} \
if ((UChar)c1 < (UChar)c2) return -1; \
if ((UChar)c1 > (UChar)c2) return 1; \
return 0; \
}
#if defined(VGO_linux)
STRCMP(VG_Z_LIBC_SONAME, strcmp)
STRCMP(VG_Z_LIBC_SONAME, __GI_strcmp)
STRCMP(VG_Z_LIBC_SONAME, __strcmp_sse2)
STRCMP(VG_Z_LIBC_SONAME, __strcmp_sse42)
STRCMP(VG_Z_LD_LINUX_X86_64_SO_2, strcmp)
STRCMP(VG_Z_LD64_SO_1, strcmp)
# if defined(VGPV_arm_linux_android) || defined(VGPV_x86_linux_android) \
|| defined(VGPV_mips32_linux_android)
STRCMP(NONE, __dl_strcmp); /* in /system/bin/linker */
# endif
#elif defined(VGO_darwin)
STRCMP(VG_Z_LIBC_SONAME, strcmp)
# if DARWIN_VERS >= DARWIN_10_9
STRCMP(libsystemZuplatformZddylib, _platform_strcmp)
# endif
#elif defined(VGO_solaris)
STRCMP(VG_Z_LIBC_SONAME, strcmp)
STRCMP(VG_Z_LD_SO_1, strcmp)
#endif
/*---------------------- memchr ----------------------*/
#define MEMCHR(soname, fnname) \
void* VG_REPLACE_FUNCTION_EZU(20170,soname,fnname) \
(const void *s, int c, SizeT n); \
void* VG_REPLACE_FUNCTION_EZU(20170,soname,fnname) \
(const void *s, int c, SizeT n) \
{ \
SizeT i; \
UChar c0 = (UChar)c; \
const UChar* p = s; \
for (i = 0; i < n; i++) \
if (p[i] == c0) return CONST_CAST(void *,&p[i]); \
return NULL; \
}
#if defined(VGO_linux)
MEMCHR(VG_Z_LIBC_SONAME, memchr)
MEMCHR(VG_Z_LIBC_SONAME, __GI_memchr)
#elif defined(VGO_darwin)
# if DARWIN_VERS == DARWIN_10_9
MEMCHR(VG_Z_DYLD, memchr)
MEMCHR(libsystemZuplatformZddylib, _platform_memchr)
# endif
# if DARWIN_VERS >= DARWIN_10_10
MEMCHR(VG_Z_DYLD, memchr)
/* _platform_memchr$VARIANT$Generic */
MEMCHR(libsystemZuplatformZddylib, _platform_memchr$VARIANT$Generic)
/* _platform_memchr$VARIANT$Haswell */
MEMCHR(libsystemZuplatformZddylib, _platform_memchr$VARIANT$Haswell)
# endif
#elif defined(VGO_solaris)
MEMCHR(VG_Z_LIBC_SONAME, memchr)
#endif
/*---------------------- memrchr ----------------------*/
#define MEMRCHR(soname, fnname) \
void* VG_REPLACE_FUNCTION_EZU(20360,soname,fnname) \
(const void *s, int c, SizeT n); \
void* VG_REPLACE_FUNCTION_EZU(20360,soname,fnname) \
(const void *s, int c, SizeT n) \
{ \
SizeT i; \
UChar c0 = (UChar)c; \
const UChar* p = s; \
for (i = 0; i < n; i++) \
if (p[n-1-i] == c0) return CONST_CAST(void *,&p[n-1-i]); \
return NULL; \
}
#if defined(VGO_linux)
MEMRCHR(VG_Z_LIBC_SONAME, memrchr)
#elif defined(VGO_darwin)
//MEMRCHR(VG_Z_LIBC_SONAME, memrchr)
//MEMRCHR(VG_Z_DYLD, memrchr)
#elif defined(VGO_solaris)
#endif
/*---------------------- memcpy ----------------------*/
#define MEMMOVE_OR_MEMCPY(becTag, soname, fnname, do_ol_check) \
void* VG_REPLACE_FUNCTION_EZZ(becTag,soname,fnname) \
( void *dst, const void *src, SizeT len ); \
void* VG_REPLACE_FUNCTION_EZZ(becTag,soname,fnname) \
( void *dst, const void *src, SizeT len ) \
{ \
if (do_ol_check && is_overlap(dst, src, len, len)) \
RECORD_OVERLAP_ERROR("memcpy", dst, src, len); \
\
const Addr WS = sizeof(UWord); /* 8 or 4 */ \
const Addr WM = WS - 1; /* 7 or 3 */ \
\
if (len > 0) { \
if (dst < src || !is_overlap(dst, src, len, len)) { \
\
/* Copying backwards. */ \
SizeT n = len; \
Addr d = (Addr)dst; \
Addr s = (Addr)src; \
\
if (((s^d) & WM) == 0) { \
/* s and d have same UWord alignment. */ \
/* Pull up to a UWord boundary. */ \
while ((s & WM) != 0 && n >= 1) \
{ *(UChar*)d = *(UChar*)s; s += 1; d += 1; n -= 1; } \
/* Copy UWords. */ \
while (n >= WS) \
{ *(UWord*)d = *(UWord*)s; s += WS; d += WS; n -= WS; } \
if (n == 0) \
return dst; \
} \
if (((s|d) & 1) == 0) { \
/* Both are 16-aligned; copy what we can thusly. */ \
while (n >= 2) \
{ *(UShort*)d = *(UShort*)s; s += 2; d += 2; n -= 2; } \
} \
/* Copy leftovers, or everything if misaligned. */ \
while (n >= 1) \
{ *(UChar*)d = *(UChar*)s; s += 1; d += 1; n -= 1; } \
\
} else if (dst > src) { \
\
SizeT n = len; \
Addr d = ((Addr)dst) + n; \
Addr s = ((Addr)src) + n; \
\
/* Copying forwards. */ \
if (((s^d) & WM) == 0) { \
/* s and d have same UWord alignment. */ \
/* Back down to a UWord boundary. */ \
while ((s & WM) != 0 && n >= 1) \
{ s -= 1; d -= 1; *(UChar*)d = *(UChar*)s; n -= 1; } \
/* Copy UWords. */ \
while (n >= WS) \
{ s -= WS; d -= WS; *(UWord*)d = *(UWord*)s; n -= WS; } \
if (n == 0) \
return dst; \
} \
if (((s|d) & 1) == 0) { \
/* Both are 16-aligned; copy what we can thusly. */ \
while (n >= 2) \
{ s -= 2; d -= 2; *(UShort*)d = *(UShort*)s; n -= 2; } \
} \
/* Copy leftovers, or everything if misaligned. */ \
while (n >= 1) \
{ s -= 1; d -= 1; *(UChar*)d = *(UChar*)s; n -= 1; } \
\
} \
} \
\
return dst; \
}
#define MEMMOVE(soname, fnname) \
MEMMOVE_OR_MEMCPY(20181, soname, fnname, 0)
#define MEMCPY(soname, fnname) \
MEMMOVE_OR_MEMCPY(20180, soname, fnname, 1)
#if defined(VGO_linux)
/* For older memcpy we have to use memmove-like semantics and skip
the overlap check; sigh; see #275284. */
MEMMOVE(VG_Z_LIBC_SONAME, memcpyZAGLIBCZu2Zd2Zd5) /* memcpy@GLIBC_2.2.5 */
MEMCPY(VG_Z_LIBC_SONAME, memcpyZAZAGLIBCZu2Zd14) /* memcpy@@GLIBC_2.14 */
MEMCPY(VG_Z_LIBC_SONAME, memcpy) /* fallback case */
MEMCPY(VG_Z_LIBC_SONAME, __GI_memcpy)
MEMCPY(VG_Z_LIBC_SONAME, __memcpy_sse2)
MEMCPY(VG_Z_LD_SO_1, memcpy) /* ld.so.1 */
MEMCPY(VG_Z_LD64_SO_1, memcpy) /* ld64.so.1 */
/* icc9 blats these around all over the place. Not only in the main
executable but various .so's. They are highly tuned and read
memory beyond the source boundary (although work correctly and
never go across page boundaries), so give errors when run
natively, at least for misaligned source arg. Just intercepting
in the exe only until we understand more about the problem. See
http://bugs.kde.org/show_bug.cgi?id=139776
*/
MEMCPY(NONE, ZuintelZufastZumemcpy)
#elif defined(VGO_darwin)
# if DARWIN_VERS <= DARWIN_10_6
MEMCPY(VG_Z_LIBC_SONAME, memcpy)
# endif
MEMCPY(VG_Z_LIBC_SONAME, memcpyZDVARIANTZDsse3x) /* memcpy$VARIANT$sse3x */
MEMCPY(VG_Z_LIBC_SONAME, memcpyZDVARIANTZDsse42) /* memcpy$VARIANT$sse42 */
#elif defined(VGO_solaris)
MEMCPY(VG_Z_LIBC_SONAME, memcpy)
MEMCPY(VG_Z_LD_SO_1, memcpy)
#endif
/*---------------------- memcmp ----------------------*/
#define MEMCMP(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20190,soname,fnname) \
( const void *s1V, const void *s2V, SizeT n ); \
int VG_REPLACE_FUNCTION_EZU(20190,soname,fnname) \
( const void *s1V, const void *s2V, SizeT n ) \
{ \
const SizeT WS = sizeof(UWord); /* 8 or 4 */ \
const SizeT WM = WS - 1; /* 7 or 3 */ \
Addr s1A = (Addr)s1V; \
Addr s2A = (Addr)s2V; \
\
if (((s1A | s2A) & WM) == 0) { \
/* Both areas are word aligned. Skip over the */ \
/* equal prefix as fast as possible. */ \
while (n >= WS) { \
UWord w1 = *(UWord*)s1A; \
UWord w2 = *(UWord*)s2A; \
if (w1 != w2) break; \
s1A += WS; \
s2A += WS; \
n -= WS; \
} \
} \
\
const UChar* s1 = (const UChar*) s1A; \
const UChar* s2 = (const UChar*) s2A; \
\
while (n != 0) { \
UChar a0 = s1[0]; \
UChar b0 = s2[0]; \
s1 += 1; \
s2 += 1; \
int res = ((int)a0) - ((int)b0); \
if (res != 0) \
return res; \
n -= 1; \
} \
return 0; \
}
#if defined(VGO_linux)
MEMCMP(VG_Z_LIBC_SONAME, memcmp)
MEMCMP(VG_Z_LIBC_SONAME, __GI_memcmp)
MEMCMP(VG_Z_LIBC_SONAME, __memcmp_sse2)
MEMCMP(VG_Z_LIBC_SONAME, __memcmp_sse4_1)
MEMCMP(VG_Z_LIBC_SONAME, bcmp)
MEMCMP(VG_Z_LD_SO_1, bcmp)
#elif defined(VGO_darwin)
# if DARWIN_VERS >= DARWIN_10_9
MEMCMP(libsystemZuplatformZddylib, _platform_memcmp)
# endif
#elif defined(VGO_solaris)
MEMCMP(VG_Z_LIBC_SONAME, memcmp)
MEMCMP(VG_Z_LIBC_SONAME, bcmp)
MEMCMP(VG_Z_LD_SO_1, memcmp)
#endif
/*---------------------- stpcpy ----------------------*/
/* Copy SRC to DEST, returning the address of the terminating '\0' in
DEST. (minor variant of strcpy) */
#define STPCPY(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20200,soname,fnname) \
( char* dst, const char* src ); \
char* VG_REPLACE_FUNCTION_EZU(20200,soname,fnname) \
( char* dst, const char* src ) \
{ \
const HChar* src_orig = src; \
HChar* dst_orig = dst; \
\
while (*src) *dst++ = *src++; \
*dst = 0; \
\
/* This checks for overlap after copying, unavoidable without */ \
/* pre-counting length... should be ok */ \
if (is_overlap(dst_orig, \
src_orig, \
(Addr)dst-(Addr)dst_orig+1, \
(Addr)src-(Addr)src_orig+1)) \
RECORD_OVERLAP_ERROR("stpcpy", dst_orig, src_orig, 0); \
\
return dst; \
}
#if defined(VGO_linux)
STPCPY(VG_Z_LIBC_SONAME, stpcpy)
STPCPY(VG_Z_LIBC_SONAME, __GI_stpcpy)
STPCPY(VG_Z_LIBC_SONAME, __stpcpy_sse2)
STPCPY(VG_Z_LIBC_SONAME, __stpcpy_sse2_unaligned)
STPCPY(VG_Z_LD_LINUX_SO_2, stpcpy)
STPCPY(VG_Z_LD_LINUX_X86_64_SO_2, stpcpy)
#elif defined(VGO_darwin)
//STPCPY(VG_Z_LIBC_SONAME, stpcpy)
//STPCPY(VG_Z_DYLD, stpcpy)
#elif defined(VGO_solaris)
STPCPY(VG_Z_LIBC_SONAME, stpcpy)
#endif
/*---------------------- stpncpy ----------------------*/
#define STPNCPY(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20420,soname,fnname) \
( char* dst, const char* src, SizeT n ); \
char* VG_REPLACE_FUNCTION_EZU(20420,soname,fnname) \
( char* dst, const char* src, SizeT n ) \
{ \
const HChar* src_orig = src; \
HChar* dst_str = dst; \
SizeT m = 0; \
\
while (m < n && *src) { m++; *dst++ = *src++; } \
/* Check for overlap after copying; all n bytes of dst are relevant, */ \
/* but only m+1 bytes of src if terminator was found */ \
if (is_overlap(dst_str, src_orig, n, (m < n) ? m+1 : n)) \
RECORD_OVERLAP_ERROR("stpncpy", dst, src, n); \
dst_str = dst; \
while (m++ < n) *dst++ = 0; /* must pad remainder with nulls */ \
\
return dst_str; \
}
#if defined(VGO_linux)
STPNCPY(VG_Z_LIBC_SONAME, stpncpy)
#endif
/*---------------------- memset ----------------------*/
/* Why are we bothering to intercept this? It seems entirely
pointless. */
#define MEMSET(soname, fnname) \
void* VG_REPLACE_FUNCTION_EZU(20210,soname,fnname) \
(void *s, Int c, SizeT n); \
void* VG_REPLACE_FUNCTION_EZU(20210,soname,fnname) \
(void *s, Int c, SizeT n) \
{ \
if (sizeof(void*) == 8) { \
Addr a = (Addr)s; \
ULong c8 = (c & 0xFF); \
c8 = (c8 << 8) | c8; \
c8 = (c8 << 16) | c8; \
c8 = (c8 << 32) | c8; \
while ((a & 7) != 0 && n >= 1) \
{ *(UChar*)a = (UChar)c; a += 1; n -= 1; } \
while (n >= 8) \
{ *(ULong*)a = c8; a += 8; n -= 8; } \
while (n >= 1) \
{ *(UChar*)a = (UChar)c; a += 1; n -= 1; } \
return s; \
} else { \
Addr a = (Addr)s; \
UInt c4 = (c & 0xFF); \
c4 = (c4 << 8) | c4; \
c4 = (c4 << 16) | c4; \
while ((a & 3) != 0 && n >= 1) \
{ *(UChar*)a = (UChar)c; a += 1; n -= 1; } \
while (n >= 4) \
{ *(UInt*)a = c4; a += 4; n -= 4; } \
while (n >= 1) \
{ *(UChar*)a = (UChar)c; a += 1; n -= 1; } \
return s; \
} \
}
#if defined(VGO_linux)
MEMSET(VG_Z_LIBC_SONAME, memset)
#elif defined(VGO_darwin)
//MEMSET(VG_Z_LIBC_SONAME, memset)
//MEMSET(VG_Z_DYLD, memset)
MEMSET(VG_Z_LIBC_SONAME, memset)
#elif defined(VGO_solaris)
MEMSET(VG_Z_LIBC_SONAME, memset)
#endif
/*---------------------- memmove ----------------------*/
/* memmove -- use the MEMMOVE defn above. */
#if defined(VGO_linux)
MEMMOVE(VG_Z_LIBC_SONAME, memmove)
MEMMOVE(VG_Z_LIBC_SONAME, __GI_memmove)
/* See bug #349828 Override for ld64.so.1 like memcpy, because for some
arches MEMCPY_OK_FOR_FORWARD_MEMMOVE is set, which might cause memmove
to call memcpy. */
MEMMOVE(VG_Z_LD64_SO_1, memmove)
#elif defined(VGO_darwin)
# if DARWIN_VERS <= DARWIN_10_6
MEMMOVE(VG_Z_LIBC_SONAME, memmove)
# endif
MEMMOVE(VG_Z_LIBC_SONAME, memmoveZDVARIANTZDsse3x) /* memmove$VARIANT$sse3x */
MEMMOVE(VG_Z_LIBC_SONAME, memmoveZDVARIANTZDsse42) /* memmove$VARIANT$sse42 */
# if DARWIN_VERS >= DARWIN_10_9
/* _platform_memmove$VARIANT$Ivybridge */
MEMMOVE(libsystemZuplatformZddylib, ZuplatformZumemmoveZDVARIANTZDIvybridge)
# endif
#elif defined(VGO_solaris)
MEMMOVE(VG_Z_LIBC_SONAME, memmove)
MEMMOVE(VG_Z_LD_SO_1, memmove)
#endif
/*---------------------- bcopy ----------------------*/
#define BCOPY(soname, fnname) \
void VG_REPLACE_FUNCTION_EZU(20230,soname,fnname) \
(const void *srcV, void *dstV, SizeT n); \
void VG_REPLACE_FUNCTION_EZU(20230,soname,fnname) \
(const void *srcV, void *dstV, SizeT n) \
{ \
SizeT i; \
HChar* dst = dstV; \
const HChar* src = srcV; \
if (dst < src) { \
for (i = 0; i < n; i++) \
dst[i] = src[i]; \
} \
else \
if (dst > src) { \
for (i = 0; i < n; i++) \
dst[n-i-1] = src[n-i-1]; \
} \
}
#if defined(VGO_linux)
BCOPY(VG_Z_LIBC_SONAME, bcopy)
#elif defined(VGO_darwin)
//BCOPY(VG_Z_LIBC_SONAME, bcopy)
//BCOPY(VG_Z_DYLD, bcopy)
#elif defined(VGO_darwin)
BCOPY(VG_Z_LIBC_SONAME, bcopy)
#endif
/*-------------------- memmove_chk --------------------*/
/* glibc 2.5 variant of memmove which checks the dest is big enough.
There is no specific part of glibc that this is copied from. */
#define GLIBC25___MEMMOVE_CHK(soname, fnname) \
void* VG_REPLACE_FUNCTION_EZU(20240,soname,fnname) \
(void *dstV, const void *srcV, SizeT n, SizeT destlen); \
void* VG_REPLACE_FUNCTION_EZU(20240,soname,fnname) \
(void *dstV, const void *srcV, SizeT n, SizeT destlen) \
{ \
SizeT i; \
HChar* dst = dstV; \
const HChar* src = srcV; \
if (destlen < n) \
goto badness; \
if (dst < src) { \
for (i = 0; i < n; i++) \
dst[i] = src[i]; \
} \
else \
if (dst > src) { \
for (i = 0; i < n; i++) \
dst[n-i-1] = src[n-i-1]; \
} \
return dst; \
badness: \
VALGRIND_PRINTF_BACKTRACE( \
"*** memmove_chk: buffer overflow detected ***: " \
"program terminated\n"); \
my_exit(1); \
/*NOTREACHED*/ \
return NULL; \
}
#if defined(VGO_linux)
GLIBC25___MEMMOVE_CHK(VG_Z_LIBC_SONAME, __memmove_chk)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
#endif
/*-------------------- strchrnul --------------------*/
/* Find the first occurrence of C in S or the final NUL byte. */
#define GLIBC232_STRCHRNUL(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20250,soname,fnname) \
(const char* s, int c_in); \
char* VG_REPLACE_FUNCTION_EZU(20250,soname,fnname) \
(const char* s, int c_in) \
{ \
HChar c = (HChar) c_in; \
const HChar* char_ptr = s; \
while (1) { \
if (*char_ptr == 0) return CONST_CAST(HChar *,char_ptr); \
if (*char_ptr == c) return CONST_CAST(HChar *,char_ptr); \
char_ptr++; \
} \
}
#if defined(VGO_linux)
GLIBC232_STRCHRNUL(VG_Z_LIBC_SONAME, strchrnul)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
#endif
/*---------------------- rawmemchr ----------------------*/
/* Find the first occurrence of C in S. */
#define GLIBC232_RAWMEMCHR(soname, fnname) \
void* VG_REPLACE_FUNCTION_EZU(20260,soname,fnname) \
(const void* s, int c_in); \
void* VG_REPLACE_FUNCTION_EZU(20260,soname,fnname) \
(const void* s, int c_in) \
{ \
UChar c = (UChar) c_in; \
const UChar* char_ptr = s; \
while (1) { \
if (*char_ptr == c) return CONST_CAST(void *,char_ptr); \
char_ptr++; \
} \
}
#if defined (VGO_linux)
GLIBC232_RAWMEMCHR(VG_Z_LIBC_SONAME, rawmemchr)
GLIBC232_RAWMEMCHR(VG_Z_LIBC_SONAME, __GI___rawmemchr)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
#endif
/*---------------------- strcpy_chk ----------------------*/
/* glibc variant of strcpy that checks the dest is big enough.
Copied from glibc-2.5/debug/test-strcpy_chk.c. */
#define GLIBC25___STRCPY_CHK(soname,fnname) \
char* VG_REPLACE_FUNCTION_EZU(20270,soname,fnname) \
(char* dst, const char* src, SizeT len); \
char* VG_REPLACE_FUNCTION_EZU(20270,soname,fnname) \
(char* dst, const char* src, SizeT len) \
{ \
HChar* ret = dst; \
if (! len) \
goto badness; \
while ((*dst++ = *src++) != '\0') \
if (--len == 0) \
goto badness; \
return ret; \
badness: \
VALGRIND_PRINTF_BACKTRACE( \
"*** strcpy_chk: buffer overflow detected ***: " \
"program terminated\n"); \
my_exit(1); \
/*NOTREACHED*/ \
return NULL; \
}
#if defined(VGO_linux)
GLIBC25___STRCPY_CHK(VG_Z_LIBC_SONAME, __strcpy_chk)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
#endif
/*---------------------- stpcpy_chk ----------------------*/
/* glibc variant of stpcpy that checks the dest is big enough.
Copied from glibc-2.5/debug/test-stpcpy_chk.c. */
#define GLIBC25___STPCPY_CHK(soname,fnname) \
char* VG_REPLACE_FUNCTION_EZU(20280,soname,fnname) \
(char* dst, const char* src, SizeT len); \
char* VG_REPLACE_FUNCTION_EZU(20280,soname,fnname) \
(char* dst, const char* src, SizeT len) \
{ \
if (! len) \
goto badness; \
while ((*dst++ = *src++) != '\0') \
if (--len == 0) \
goto badness; \
return dst - 1; \
badness: \
VALGRIND_PRINTF_BACKTRACE( \
"*** stpcpy_chk: buffer overflow detected ***: " \
"program terminated\n"); \
my_exit(1); \
/*NOTREACHED*/ \
return NULL; \
}
#if defined(VGO_linux)
GLIBC25___STPCPY_CHK(VG_Z_LIBC_SONAME, __stpcpy_chk)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
#endif
/*---------------------- mempcpy ----------------------*/
/* mempcpy */
#define GLIBC25_MEMPCPY(soname, fnname) \
void* VG_REPLACE_FUNCTION_EZU(20290,soname,fnname) \
( void *dst, const void *src, SizeT len ); \
void* VG_REPLACE_FUNCTION_EZU(20290,soname,fnname) \
( void *dst, const void *src, SizeT len ) \
{ \
SizeT len_saved = len; \
\
if (len == 0) \
return dst; \
\
if (is_overlap(dst, src, len, len)) \
RECORD_OVERLAP_ERROR("mempcpy", dst, src, len); \
\
if ( dst > src ) { \
register HChar *d = (char *)dst + len - 1; \
register const HChar *s = (const char *)src + len - 1; \
while ( len-- ) { \
*d-- = *s--; \
} \
} else if ( dst < src ) { \
register HChar *d = dst; \
register const HChar *s = src; \
while ( len-- ) { \
*d++ = *s++; \
} \
} \
return (void*)( ((char*)dst) + len_saved ); \
}
#if defined(VGO_linux)
GLIBC25_MEMPCPY(VG_Z_LIBC_SONAME, mempcpy)
GLIBC25_MEMPCPY(VG_Z_LIBC_SONAME, __GI_mempcpy)
GLIBC25_MEMPCPY(VG_Z_LD_SO_1, mempcpy) /* ld.so.1 */
GLIBC25_MEMPCPY(VG_Z_LD_LINUX_SO_3, mempcpy) /* ld-linux.so.3 */
GLIBC25_MEMPCPY(VG_Z_LD_LINUX_X86_64_SO_2, mempcpy) /* ld-linux-x86-64.so.2 */
#elif defined(VGO_darwin)
//GLIBC25_MEMPCPY(VG_Z_LIBC_SONAME, mempcpy)
#elif defined(VGO_solaris)
#endif
/*-------------------- memcpy_chk --------------------*/
#define GLIBC26___MEMCPY_CHK(soname, fnname) \
void* VG_REPLACE_FUNCTION_EZU(20300,soname,fnname) \
(void* dst, const void* src, SizeT len, SizeT dstlen ); \
void* VG_REPLACE_FUNCTION_EZU(20300,soname,fnname) \
(void* dst, const void* src, SizeT len, SizeT dstlen ) \
{ \
register HChar *d; \
register const HChar *s; \
\
if (dstlen < len) goto badness; \
\
if (len == 0) \
return dst; \
\
if (is_overlap(dst, src, len, len)) \
RECORD_OVERLAP_ERROR("memcpy_chk", dst, src, len); \
\
if ( dst > src ) { \
d = (HChar *)dst + len - 1; \
s = (const HChar *)src + len - 1; \
while ( len-- ) { \
*d-- = *s--; \
} \
} else if ( dst < src ) { \
d = (HChar *)dst; \
s = (const HChar *)src; \
while ( len-- ) { \
*d++ = *s++; \
} \
} \
return dst; \
badness: \
VALGRIND_PRINTF_BACKTRACE( \
"*** memcpy_chk: buffer overflow detected ***: " \
"program terminated\n"); \
my_exit(1); \
/*NOTREACHED*/ \
return NULL; \
}
#if defined(VGO_linux)
GLIBC26___MEMCPY_CHK(VG_Z_LIBC_SONAME, __memcpy_chk)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
#endif
/*---------------------- strstr ----------------------*/
#define STRSTR(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20310,soname,fnname) \
(const char* haystack, const char* needle); \
char* VG_REPLACE_FUNCTION_EZU(20310,soname,fnname) \
(const char* haystack, const char* needle) \
{ \
const HChar* h = haystack; \
const HChar* n = needle; \
\
/* find the length of n, not including terminating zero */ \
UWord nlen = 0; \
while (n[nlen]) nlen++; \
\
/* if n is the empty string, match immediately. */ \
if (nlen == 0) return CONST_CAST(HChar *,h); \
\
/* assert(nlen >= 1); */ \
HChar n0 = n[0]; \
\
while (1) { \
const HChar hh = *h; \
if (hh == 0) return NULL; \
if (hh != n0) { h++; continue; } \
\
UWord i; \
for (i = 0; i < nlen; i++) { \
if (n[i] != h[i]) \
break; \
} \
/* assert(i >= 0 && i <= nlen); */ \
if (i == nlen) \
return CONST_CAST(HChar *,h); \
\
h++; \
} \
}
#if defined(VGO_linux)
STRSTR(VG_Z_LIBC_SONAME, strstr)
STRSTR(VG_Z_LIBC_SONAME, __strstr_sse2)
STRSTR(VG_Z_LIBC_SONAME, __strstr_sse42)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
STRSTR(VG_Z_LIBC_SONAME, strstr)
#endif
/*---------------------- strpbrk ----------------------*/
#define STRPBRK(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20320,soname,fnname) \
(const char* sV, const char* acceptV); \
char* VG_REPLACE_FUNCTION_EZU(20320,soname,fnname) \
(const char* sV, const char* acceptV) \
{ \
const HChar* s = sV; \
const HChar* accept = acceptV; \
\
/* find the length of 'accept', not including terminating zero */ \
UWord nacc = 0; \
while (accept[nacc]) nacc++; \
\
/* if n is the empty string, fail immediately. */ \
if (nacc == 0) return NULL; \
\
/* assert(nacc >= 1); */ \
while (1) { \
UWord i; \
HChar sc = *s; \
if (sc == 0) \
break; \
for (i = 0; i < nacc; i++) { \
if (sc == accept[i]) \
return CONST_CAST(HChar *,s); \
} \
s++; \
} \
\
return NULL; \
}
#if defined(VGO_linux)
STRPBRK(VG_Z_LIBC_SONAME, strpbrk)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
STRPBRK(VG_Z_LIBC_SONAME, strpbrk)
#endif
/*---------------------- strcspn ----------------------*/
#define STRCSPN(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_EZU(20330,soname,fnname) \
(const char* sV, const char* rejectV); \
SizeT VG_REPLACE_FUNCTION_EZU(20330,soname,fnname) \
(const char* sV, const char* rejectV) \
{ \
const HChar* s = sV; \
const HChar* reject = rejectV; \
\
/* find the length of 'reject', not including terminating zero */ \
UWord nrej = 0; \
while (reject[nrej]) nrej++; \
\
UWord len = 0; \
while (1) { \
UWord i; \
HChar sc = *s; \
if (sc == 0) \
break; \
for (i = 0; i < nrej; i++) { \
if (sc == reject[i]) \
break; \
} \
/* assert(i >= 0 && i <= nrej); */ \
if (i < nrej) \
break; \
s++; \
len++; \
} \
\
return len; \
}
#if defined(VGO_linux)
STRCSPN(VG_Z_LIBC_SONAME, strcspn)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
STRCSPN(VG_Z_LIBC_SONAME, strcspn)
#endif
/*---------------------- strspn ----------------------*/
#define STRSPN(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_EZU(20340,soname,fnname) \
(const char* sV, const char* acceptV); \
SizeT VG_REPLACE_FUNCTION_EZU(20340,soname,fnname) \
(const char* sV, const char* acceptV) \
{ \
const UChar* s = (const UChar *)sV; \
const UChar* accept = (const UChar *)acceptV; \
\
/* find the length of 'accept', not including terminating zero */ \
UWord nacc = 0; \
while (accept[nacc]) nacc++; \
if (nacc == 0) return 0; \
\
UWord len = 0; \
while (1) { \
UWord i; \
HChar sc = *s; \
if (sc == 0) \
break; \
for (i = 0; i < nacc; i++) { \
if (sc == accept[i]) \
break; \
} \
/* assert(i >= 0 && i <= nacc); */ \
if (i == nacc) \
break; \
s++; \
len++; \
} \
\
return len; \
}
#if defined(VGO_linux)
STRSPN(VG_Z_LIBC_SONAME, strspn)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
STRSPN(VG_Z_LIBC_SONAME, strspn)
#endif
/*---------------------- strcasestr ----------------------*/
#define STRCASESTR(soname, fnname) \
char* VG_REPLACE_FUNCTION_EZU(20350,soname,fnname) \
(const char* haystack, const char* needle); \
char* VG_REPLACE_FUNCTION_EZU(20350,soname,fnname) \
(const char* haystack, const char* needle) \
{ \
extern int tolower(int); \
const HChar* h = haystack; \
const HChar* n = needle; \
\
/* find the length of n, not including terminating zero */ \
UWord nlen = 0; \
while (n[nlen]) nlen++; \
\
/* if n is the empty string, match immediately. */ \
if (nlen == 0) return CONST_CAST(HChar *,h); \
\
/* assert(nlen >= 1); */ \
UChar n0 = tolower(n[0]); \
\
while (1) { \
UChar hh = tolower(*h); \
if (hh == 0) return NULL; \
if (hh != n0) { h++; continue; } \
\
UWord i; \
for (i = 0; i < nlen; i++) { \
if (tolower(n[i]) != tolower(h[i])) \
break; \
} \
/* assert(i >= 0 && i <= nlen); */ \
if (i == nlen) \
return CONST_CAST(HChar *,h); \
\
h++; \
} \
}
#if defined(VGO_linux)
# if !defined(VGPV_arm_linux_android) \
&& !defined(VGPV_x86_linux_android) \
&& !defined(VGPV_mips32_linux_android) \
&& !defined(VGPV_arm64_linux_android)
STRCASESTR(VG_Z_LIBC_SONAME, strcasestr)
# endif
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
STRCASESTR(VG_Z_LIBC_SONAME, strcasestr)
#endif
/*---------------------- wcslen ----------------------*/
// This is a wchar_t equivalent to strlen. Unfortunately
// we don't have wchar_t available here, but it looks like
// a 32 bit int on Linux. I don't know if that is also
// valid on MacOSX.
#define WCSLEN(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_EZU(20370,soname,fnname) \
( const UInt* str ); \
SizeT VG_REPLACE_FUNCTION_EZU(20370,soname,fnname) \
( const UInt* str ) \
{ \
SizeT i = 0; \
while (str[i] != 0) i++; \
return i; \
}
#if defined(VGO_linux)
WCSLEN(VG_Z_LIBC_SONAME, wcslen)
#elif defined(VGO_darwin)
#elif defined(VGO_solaris)
WCSLEN(VG_Z_LIBC_SONAME, wcslen)
#endif
/*---------------------- wcscmp ----------------------*/
// This is a wchar_t equivalent to strcmp. We don't
// have wchar_t available here, but in the GNU C Library
// wchar_t is always 32 bits wide and wcscmp uses signed
// comparison, not unsigned as in strcmp function.
#define WCSCMP(soname, fnname) \
int VG_REPLACE_FUNCTION_EZU(20380,soname,fnname) \
( const Int* s1, const Int* s2 ); \
int VG_REPLACE_FUNCTION_EZU(20380,soname,fnname) \
( const Int* s1, const Int* s2 ) \
{ \
register Int c1; \
register Int c2; \
while (True) { \
c1 = *s1; \
c2 = *s2; \
if (c1 != c2) break; \
if (c1 == 0) break; \
s1++; s2++; \
} \
if (c1 < c2) return -1; \
if (c1 > c2) return 1; \
return 0; \
}
#if defined(VGO_linux)
WCSCMP(VG_Z_LIBC_SONAME, wcscmp)
#endif
/*---------------------- wcscpy ----------------------*/
// This is a wchar_t equivalent to strcpy. We don't
// have wchar_t available here, but in the GNU C Library
// wchar_t is always 32 bits wide.
#define WCSCPY(soname, fnname) \
Int* VG_REPLACE_FUNCTION_EZU(20390,soname,fnname) \
( Int* dst, const Int* src ); \
Int* VG_REPLACE_FUNCTION_EZU(20390,soname,fnname) \
( Int* dst, const Int* src ) \
{ \
const Int* src_orig = src; \
Int* dst_orig = dst; \
\
while (*src) *dst++ = *src++; \
*dst = 0; \
\
/* This checks for overlap after copying, unavoidable without */ \
/* pre-counting length... should be ok */ \
if (is_overlap(dst_orig, \
src_orig, \
(Addr)dst-(Addr)dst_orig+1, \
(Addr)src-(Addr)src_orig+1)) \
RECORD_OVERLAP_ERROR("wcscpy", dst_orig, src_orig, 0); \
\
return dst_orig; \
}
#if defined(VGO_linux)
WCSCPY(VG_Z_LIBC_SONAME, wcscpy)
#endif
/*---------------------- wcschr ----------------------*/
// This is a wchar_t equivalent to strchr. We don't
// have wchar_t available here, but in the GNU C Library
// wchar_t is always 32 bits wide.
#define WCSCHR(soname, fnname) \
Int* VG_REPLACE_FUNCTION_EZU(20400,soname,fnname) ( const Int* s, Int c ); \
Int* VG_REPLACE_FUNCTION_EZU(20400,soname,fnname) ( const Int* s, Int c ) \
{ \
const Int* p = s; \
while (True) { \
if (*p == c) return CONST_CAST(Int *,p); \
if (*p == 0) return NULL; \
p++; \
} \
}
#if defined(VGO_linux)
WCSCHR(VG_Z_LIBC_SONAME, wcschr)
#endif
/*---------------------- wcsrchr ----------------------*/
// This is a wchar_t equivalent to strrchr. We don't
// have wchar_t available here, but in the GNU C Library
// wchar_t is always 32 bits wide.
#define WCSRCHR(soname, fnname) \
Int* VG_REPLACE_FUNCTION_EZU(20410,soname,fnname)( const Int* s, Int c ); \
Int* VG_REPLACE_FUNCTION_EZU(20410,soname,fnname)( const Int* s, Int c ) \
{ \
const Int* p = s; \
const Int* last = NULL; \
while (True) { \
if (*p == c) last = p; \
if (*p == 0) return CONST_CAST(Int *,last); \
p++; \
} \
}
#if defined(VGO_linux)
WCSRCHR(VG_Z_LIBC_SONAME, wcsrchr)
#endif
/*------------------------------------------------------------*/
/*--- Improve definedness checking of process environment ---*/
/*------------------------------------------------------------*/
#if defined(VGO_linux)
/* If these wind up getting generated via a macro, so that multiple
versions of each function exist (as above), use the _EZU variants
to assign equivalance class tags. */
/*---------------------- putenv ----------------------*/
int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, putenv) (char* string);
int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, putenv) (char* string)
{
OrigFn fn;
Word result;
const HChar* p = string;
VALGRIND_GET_ORIG_FN(fn);
/* Now by walking over the string we magically produce
traces when hitting undefined memory. */
if (p)
while (*p++)
__asm__ __volatile__("" ::: "memory");
CALL_FN_W_W(result, fn, string);
return result;
}
/*---------------------- unsetenv ----------------------*/
int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, unsetenv) (const char* name);
int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, unsetenv) (const char* name)
{
OrigFn fn;
Word result;
const HChar* p = name;
VALGRIND_GET_ORIG_FN(fn);
/* Now by walking over the string we magically produce
traces when hitting undefined memory. */
if (p)
while (*p++)
__asm__ __volatile__("" ::: "memory");
CALL_FN_W_W(result, fn, name);
return result;
}
/*---------------------- setenv ----------------------*/
/* setenv */
int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, setenv)
(const char* name, const char* value, int overwrite);
int VG_WRAP_FUNCTION_ZU(VG_Z_LIBC_SONAME, setenv)
(const char* name, const char* value, int overwrite)
{
OrigFn fn;
Word result;
const HChar* p;
VALGRIND_GET_ORIG_FN(fn);
/* Now by walking over the string we magically produce
traces when hitting undefined memory. */
if (name)
for (p = name; *p; p++)
__asm__ __volatile__("" ::: "memory");
if (value)
for (p = value; *p; p++)
__asm__ __volatile__("" ::: "memory");
(void) VALGRIND_CHECK_VALUE_IS_DEFINED (overwrite);
CALL_FN_W_WWW(result, fn, name, value, overwrite);
return result;
}
#endif /* defined(VGO_linux) */
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
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