[PATCH 3/5] rust: helpers: Generify the definitions of rust_helper_*_cmpxchg*

[Boqun Feng]

To support atomic pointers, more cmpxchg helpers will be introduced,
hence define macros to generate these helpers to ease the introduction
of the future helpers.

Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
---
 rust/helpers/atomic_ext.c | 48 ++++++++++-----------------------------
 1 file changed, 12 insertions(+), 36 deletions(-)

diff --git a/rust/helpers/atomic_ext.c b/rust/helpers/atomic_ext.c
index c5f665bbe785..240218e2e708 100644
--- a/rust/helpers/atomic_ext.c
+++ b/rust/helpers/atomic_ext.c
@@ -67,42 +67,18 @@ GEN_XCHG_HELPERS(i16, s16)
  * The architectures that currently support Rust (x86_64, armv7,
  * arm64, riscv, and loongarch) satisfy these requirements.
  */
-__rust_helper bool rust_helper_atomic_i8_try_cmpxchg(s8 *ptr, s8 *old, s8 new)
-{
-       return try_cmpxchg(ptr, old, new);
-}
-
-__rust_helper bool rust_helper_atomic_i16_try_cmpxchg(s16 *ptr, s16 *old, s16 
new)
-{
-       return try_cmpxchg(ptr, old, new);
-}
-
-__rust_helper bool rust_helper_atomic_i8_try_cmpxchg_acquire(s8 *ptr, s8 *old, 
s8 new)
-{
-       return try_cmpxchg_acquire(ptr, old, new);
-}
-
-__rust_helper bool rust_helper_atomic_i16_try_cmpxchg_acquire(s16 *ptr, s16 
*old, s16 new)
-{
-       return try_cmpxchg_acquire(ptr, old, new);
-}
-
-__rust_helper bool rust_helper_atomic_i8_try_cmpxchg_release(s8 *ptr, s8 *old, 
s8 new)
-{
-       return try_cmpxchg_release(ptr, old, new);
-}
-
-__rust_helper bool rust_helper_atomic_i16_try_cmpxchg_release(s16 *ptr, s16 
*old, s16 new)
-{
-       return try_cmpxchg_release(ptr, old, new);
+#define GEN_TRY_CMPXCHG_HELPER(tname, type, suffix)                            
\
+__rust_helper bool                                                             
\
+rust_helper_atomic_##tname##_try_cmpxchg##suffix(type *ptr, type *old, type 
new)\
+{                                                                              
\
+       return try_cmpxchg##suffix(ptr, old, new);                              
\
 }
 
-__rust_helper bool rust_helper_atomic_i8_try_cmpxchg_relaxed(s8 *ptr, s8 *old, 
s8 new)
-{
-       return try_cmpxchg_relaxed(ptr, old, new);
-}
+#define GEN_TRY_CMPXCHG_HELPERS(tname, type)                                   
\
+       GEN_TRY_CMPXCHG_HELPER(tname, type, )                                   
\
+       GEN_TRY_CMPXCHG_HELPER(tname, type, _acquire)                           
\
+       GEN_TRY_CMPXCHG_HELPER(tname, type, _release)                           
\
+       GEN_TRY_CMPXCHG_HELPER(tname, type, _relaxed)                           
\
 
-__rust_helper bool rust_helper_atomic_i16_try_cmpxchg_relaxed(s16 *ptr, s16 
*old, s16 new)
-{
-       return try_cmpxchg_relaxed(ptr, old, new);
-}
+GEN_TRY_CMPXCHG_HELPERS(i8, s8)
+GEN_TRY_CMPXCHG_HELPERS(i16, s16)
-- 
2.51.0