From 0ee7f1e5f9ad22b1b4406d53ccd740721afd67ba Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Tue, 8 Jan 2013 14:52:16 +0400
Subject: [PATCH] Add TODO items about missing double-wide operations for some
 targets

* src/atomic_ops/sysdeps/gcc/mips.h: Add TODO items (about double-wide
operations like load/store and CAS).
* src/atomic_ops/sysdeps/gcc/powerpc.h: Likewise.
* src/atomic_ops/sysdeps/gcc/s390.h: Likewise.
* src/atomic_ops/sysdeps/msftc/arm.h: Likewise.
---
 src/atomic_ops/sysdeps/gcc/mips.h    | 2 +-
 src/atomic_ops/sysdeps/gcc/powerpc.h | 2 ++
 src/atomic_ops/sysdeps/gcc/s390.h    | 2 +-
 src/atomic_ops/sysdeps/msftc/arm.h   | 2 +-
 4 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/atomic_ops/sysdeps/gcc/mips.h b/src/atomic_ops/sysdeps/gcc/mips.h
index a0afb95..10bb571 100644
--- a/src/atomic_ops/sysdeps/gcc/mips.h
+++ b/src/atomic_ops/sysdeps/gcc/mips.h
@@ -163,7 +163,7 @@ AO_fetch_compare_and_swap(volatile AO_t *addr, AO_t old, AO_t new_val)
 #define AO_HAVE_fetch_compare_and_swap
 
 /* #include "../standard_ao_double_t.h" */
-/* TODO: implement AO_compare_double_and_swap_double if available.      */
+/* TODO: Implement double-wide operations if available. */
 
 /* CAS primitives with acquire, release and full semantics are  */
 /* generated automatically (and AO_int_... primitives are       */
diff --git a/src/atomic_ops/sysdeps/gcc/powerpc.h b/src/atomic_ops/sysdeps/gcc/powerpc.h
index 275a277..94e83e7 100644
--- a/src/atomic_ops/sysdeps/gcc/powerpc.h
+++ b/src/atomic_ops/sysdeps/gcc/powerpc.h
@@ -355,3 +355,5 @@ AO_fetch_and_add_full(volatile AO_t *addr, AO_t incr) {
 #else
 # define AO_T_IS_INT
 #endif
+
+/* TODO: Implement double-wide operations if available. */
diff --git a/src/atomic_ops/sysdeps/gcc/s390.h b/src/atomic_ops/sysdeps/gcc/s390.h
index 6dc65dd..b3026e6 100644
--- a/src/atomic_ops/sysdeps/gcc/s390.h
+++ b/src/atomic_ops/sysdeps/gcc/s390.h
@@ -61,4 +61,4 @@ AO_INLINE int AO_compare_and_swap_full(volatile AO_t *addr,
 
 /* TODO: implement AO_fetch_compare_and_swap.   */
 
-/* TODO: Add double-wide compare-and-swap for 32-bit executables.       */
+/* TODO: Add double-wide operations for 32-bit executables.       */
diff --git a/src/atomic_ops/sysdeps/msftc/arm.h b/src/atomic_ops/sysdeps/msftc/arm.h
index 5a96ee7..c0195ec 100644
--- a/src/atomic_ops/sysdeps/msftc/arm.h
+++ b/src/atomic_ops/sysdeps/msftc/arm.h
@@ -76,7 +76,7 @@ AO_store_full(volatile AO_t *addr, AO_t value)
 #define AO_HAVE_store_full
 
 /* #include "../standard_ao_double_t.h" */
-/* TODO: implement AO_compare_double_and_swap_double (similar to x86).  */
+/* TODO: implement double-wide operations (similar to x86).  */
 
 #else /* _M_ARM < 6 */
 
-- 
2.50.0