PowerPC: Reserve TCB space for EBB framework

This patch reserves four pointer to be used in future Event-Based
Branch framework for PowerPC.

1 files changed, 5 insertions, 0 deletions

diff --git a/nptl/sysdeps/powerpc/tls.h b/nptl/sysdeps/powerpc/tls.h
index 46dac9e9f3..8e0ada6bfa 100644
--- a/nptl/sysdeps/powerpc/tls.h
+++ b/nptl/sysdeps/powerpc/tls.h
@@ -61,6 +61,11 @@ typedef union dtv
    are private.  */
 typedef struct
 {
+  /* Reservation for the Event-Based Branching ABI.  */
+  uintptr_t ebb_handler;
+  uintptr_t ebb_ctx_pointer;
+  uintptr_t ebb_reserved1;
+  uintptr_t ebb_reserved2;
   uintptr_t pointer_guard;
   uintptr_t stack_guard;
   dtv_t *dtv;