PowerPC: Reserve TCB space for EBB framework

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

diff --git a/ChangeLog b/ChangeLog
index f5292c5..8ba955a 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-06-17  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
+
+       * nptl/sysdeps/powerpc/tls.h (tcbhead_t): Add Event-Based Branch
+       fields.
+
 2013-06-17  Roland McGrath  <roland@hack.frob.com>
 
        * scripts/sysd-rules.awk: Sort sysd_rules_patterns by descending

diff --git a/nptl/sysdeps/powerpc/tls.h b/nptl/sysdeps/powerpc/tls.h
index 46dac9e..8e0ada6 100644 (file)
--- 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;