From: Tom Hughes <tom@compton.nu>
Date: Mon, 22 Mar 2004 19:46:29 +0000 (+0000)
Subject: Redirect _dl_sysinfo_int80, which is glibc's default system call
X-Git-Tag: svn/VALGRIND_2_1_2~171
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9f1434ff0ccc1b2e40531808348ba6818eb39e30;p=thirdparty%2Fvalgrind.git

Redirect _dl_sysinfo_int80, which is glibc's default system call
routine, to the routine in our trampoline page so that the
special sysinfo unwind hack in vg_execontext.c will kick in.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2334
---

diff --git a/coregrind/vg_symtab2.c b/coregrind/vg_symtab2.c
index 72be6fa373..634f1fc8a7 100644
--- a/coregrind/vg_symtab2.c
+++ b/coregrind/vg_symtab2.c
@@ -2193,6 +2193,13 @@ void VG_(setup_code_redirect_table) ( void )
 			    "soname:libpthread.so.0",	redirects[i].to);
    }
 
+   /* Redirect _dl_sysinfo_int80, which is glibc's default system call
+      routine, to the routine in our trampoline page so that the
+      special sysinfo unwind hack in vg_execontext.c will kick in.
+   */
+   VG_(add_redirect_addr)("soname:ld-linux.so.2", "_dl_sysinfo_int80",
+                          VG_(client_trampoline_code)+VG_(tramp_syscall_offset));
+   
    /* Overenthusiastic use of PLT bypassing by the glibc people also
       means we need to patch the following functions to our own
       implementations of said, in mac_replace_strmem.c.