Make libc_r check the kern.usrstack sysctl instead of using internal

kernel #defines to figure out where the stack is located.  This stops
libc_r from exploding when the kernel is compiled with a different
KVM size.  IMHO this is all kinda bogus, it would be better to just
check %esp and work from that.

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/libc_r/uthread/pthread_private.h b/lib/libc_r/uthread/pthread_private.h
index 9af2090..151fd03 100644
--- a/lib/libc_r/uthread/pthread_private.h
+++ b/lib/libc_r/uthread/pthread_private.h
@@ -881,6 +881,13 @@ struct pthread {
  * Global variables for the uthread kernel.
  */
 
+SCLASS void *_usrstack
+#ifdef GLOBAL_PTHREAD_PRIVATE
+= (void *) USRSTACK;
+#else
+;
+#endif
+
 /* Kernel thread structure used when there are no running threads: */
 SCLASS struct pthread   _thread_kern_thread;