A minimal set of changes to make it work on Red Hat 9, at least in the
interim. All hats off to Graydon Hoare for this, plus to whoever
devised the LD_ASSUME_KERNEL trapdoor.
This does not provide NPTL support. Instead it turns out we can ask
for the old LinuxThreads interface to be used (wonderful!)
Other than that we have to deal with kernels with SYSINFO pages at the
top of memory. No big deal, apparently.
MERGE TO STABLE
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1508 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_memory.c b/coregrind/vg_memory.c
index f2429ec..7b83fa3 100644
--- a/coregrind/vg_memory.c
+++ b/coregrind/vg_memory.c
@@ -211,6 +211,15 @@
/* 4 */
VG_(init_dataseg_end_for_brk)();
+
+ /* kludge: some newer kernels place a "sysinfo" page up high, with
+ vsyscalls in it, and possibly some other stuff in the future. */
+ if (VG_(sysinfo_page_exists)) {
+ VG_(new_exe_segment)( VG_(sysinfo_page_addr), 4096 );
+ VG_TRACK( new_mem_startup, VG_(sysinfo_page_addr), 4096,
+ True, True, True );
+ }
+
}