Add more infrastructure to be used for fixing #275284 (Valgrind
memcpy/memmove redirection stopped working in glibc 2.14/x86_64), but
don't fix the problem yet. Should be no end-user visible change.
* in m_redir.c, when processing redirection specifications, consider
all the names associated with an address, not just the primary name.
* add plumbing to support the notion of "behavioural equivalence class
tags" of redirect/wrap functions. These can be used by m_redir to
resolve some situations in which the available set of redirect
specifications causes some address to get redirected to two
different functions. (Framework is in place, but such resolution is
not implemented yet.)
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11984 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/include/valgrind.h b/include/valgrind.h
index fc572b6..cac4490 100644
--- a/include/valgrind.h
+++ b/include/valgrind.h
@@ -679,17 +679,20 @@
*/
/* Use these to write the name of your wrapper. NOTE: duplicates
- VG_WRAP_FUNCTION_Z{U,Z} in pub_tool_redir.h. */
+ VG_WRAP_FUNCTION_Z{U,Z} in pub_tool_redir.h. NOTE also: inserts
+ the default behaviour equivalance class tag "0000" into the name.
+ See pub_tool_redir.h for details -- normally you don't need to
+ think about this, though. */
/* Use an extra level of macroisation so as to ensure the soname/fnname
args are fully macro-expanded before pasting them together. */
#define VG_CONCAT4(_aa,_bb,_cc,_dd) _aa##_bb##_cc##_dd
#define I_WRAP_SONAME_FNNAME_ZU(soname,fnname) \
- VG_CONCAT4(_vgwZU_,soname,_,fnname)
+ VG_CONCAT4(_vgw0000ZU_,soname,_,fnname)
#define I_WRAP_SONAME_FNNAME_ZZ(soname,fnname) \
- VG_CONCAT4(_vgwZZ_,soname,_,fnname)
+ VG_CONCAT4(_vgw0000ZZ_,soname,_,fnname)
/* Use this macro from within a wrapper function to collect the
context (address and possibly other info) of the original function.