From: Julian Seward <jseward@acm.org>
Date: Sun, 31 Dec 2006 18:55:56 +0000 (+0000)
Subject: Provide a replacement for mempcpy.
X-Git-Tag: svn/VALGRIND_3_3_0~446
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20b41c0c23d1c7fb7d73ee48c04c0465b716afa5;p=thirdparty%2Fvalgrind.git

Provide a replacement for mempcpy.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6469
---

diff --git a/memcheck/mc_replace_strmem.c b/memcheck/mc_replace_strmem.c
index f4aefcd0ab..69fb91f534 100644
--- a/memcheck/mc_replace_strmem.c
+++ b/memcheck/mc_replace_strmem.c
@@ -558,6 +558,42 @@ GLIBC232_RAWMEMCHR(m_libc_soname, rawmemchr)
 GLIBC25___STRCPY_CHK(m_libc_soname, __strcpy_chk)
 
 
+/* mempcpy */
+#define GLIBC25_MEMPCPY(soname, fnname) \
+   void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \
+            ( void *dst, const void *src, SizeT len ); \
+   void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \
+            ( void *dst, const void *src, SizeT len ) \
+   { \
+      register char *d; \
+      register char *s; \
+      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 ) { \
+         d = (char *)dst + len - 1; \
+         s = (char *)src + len - 1; \
+         while ( len-- ) { \
+            *d-- = *s--; \
+         } \
+      } else if ( dst < src ) { \
+         d = (char *)dst; \
+         s = (char *)src; \
+         while ( len-- ) { \
+            *d++ = *s++; \
+         } \
+      } \
+      return (void*)( ((char*)dst) + len_saved ); \
+   }
+
+GLIBC25_MEMPCPY(m_libc_soname, mempcpy)
+
+
 /*------------------------------------------------------------*/
 /*--- AIX stuff only after this point                      ---*/
 /*------------------------------------------------------------*/