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Mark braced-groups within expressions with __extension__ #4

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Mark braced-groups within expressions with __extension__ #4

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4 changes: 4 additions & 0 deletions urcu-bp.h
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,7 @@ extern int rcu_read_ongoing(void);

extern void *rcu_dereference_sym_bp(void *p);
#define rcu_dereference_bp(p) \
__extension__ \
({ \
__typeof__(p) _________p1 = URCU_FORCE_CAST(__typeof__(p), \
rcu_dereference_sym_bp(URCU_FORCE_CAST(void *, p))); \
Expand All @@ -102,6 +103,7 @@ extern void *rcu_dereference_sym_bp(void *p);

extern void *rcu_cmpxchg_pointer_sym_bp(void **p, void *old, void *_new);
#define rcu_cmpxchg_pointer_bp(p, old, _new) \
__extension__ \
({ \
__typeof__(*(p)) _________pold = (old); \
__typeof__(*(p)) _________pnew = (_new); \
Expand All @@ -114,6 +116,7 @@ extern void *rcu_cmpxchg_pointer_sym_bp(void **p, void *old, void *_new);

extern void *rcu_xchg_pointer_sym_bp(void **p, void *v);
#define rcu_xchg_pointer_bp(p, v) \
__extension__ \
({ \
__typeof__(*(p)) _________pv = (v); \
__typeof__(*(p)) _________p1 = URCU_FORCE_CAST(__typeof__(*(p)),\
Expand All @@ -124,6 +127,7 @@ extern void *rcu_xchg_pointer_sym_bp(void **p, void *v);

extern void *rcu_set_pointer_sym_bp(void **p, void *v);
#define rcu_set_pointer_bp(p, v) \
__extension__ \
({ \
__typeof__(*(p)) _________pv = (v); \
__typeof__(*(p)) _________p1 = URCU_FORCE_CAST(__typeof__(*(p)), \
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3 changes: 3 additions & 0 deletions urcu-pointer.h
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Expand Up @@ -66,6 +66,7 @@ extern "C" {

extern void *rcu_dereference_sym(void *p);
#define rcu_dereference(p) \
__extension__ \
({ \
__typeof__(p) _________p1 = URCU_FORCE_CAST(__typeof__(p), \
rcu_dereference_sym(URCU_FORCE_CAST(void *, p))); \
Expand All @@ -74,6 +75,7 @@ extern void *rcu_dereference_sym(void *p);

extern void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new);
#define rcu_cmpxchg_pointer(p, old, _new) \
__extension__ \
({ \
__typeof__(*(p)) _________pold = (old); \
__typeof__(*(p)) _________pnew = (_new); \
Expand All @@ -86,6 +88,7 @@ extern void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new);

extern void *rcu_xchg_pointer_sym(void **p, void *v);
#define rcu_xchg_pointer(p, v) \
__extension__ \
({ \
__typeof__(*(p)) _________pv = (v); \
__typeof__(*(p)) _________p1 = URCU_FORCE_CAST(__typeof__(*(p)), \
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3 changes: 3 additions & 0 deletions urcu/arch/ppc.h
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Expand Up @@ -58,20 +58,23 @@ extern "C" {
#define cmm_smp_wmb() __asm__ __volatile__ (LWSYNC_OPCODE:::"memory")

#define mftbl() \
__extension__ \
({ \
unsigned long rval; \
__asm__ __volatile__ ("mftbl %0" : "=r" (rval)); \
rval; \
})

#define mftbu() \
__extension__ \
({ \
unsigned long rval; \
__asm__ __volatile__ ("mftbu %0" : "=r" (rval)); \
rval; \
})

#define mftb() \
__extension__ \
({ \
unsigned long long rval; \
__asm__ __volatile__ ("mftb %0" : "=r" (rval)); \
Expand Down
1 change: 1 addition & 0 deletions urcu/compiler.h
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Expand Up @@ -64,6 +64,7 @@
* @member: name of the field within the object.
*/
#define caa_container_of(ptr, type, member) \
__extension__ \
({ \
const __typeof__(((type *) NULL)->member) * __ptr = (ptr); \
(type *)((char *)__ptr - offsetof(type, member)); \
Expand Down
6 changes: 5 additions & 1 deletion urcu/static/urcu-pointer.h
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Expand Up @@ -64,7 +64,9 @@ extern "C" {
* meets the 10-line criterion in LGPL, allowing this function to be
* expanded directly in non-LGPL code.
*/
#define _rcu_dereference(p) ({ \
#define _rcu_dereference(p) \
__extension__ \
({ \
__typeof__(p) _________p1 = CMM_LOAD_SHARED(p); \
cmm_smp_read_barrier_depends(); \
(_________p1); \
Expand All @@ -82,6 +84,7 @@ extern "C" {
* expanded directly in non-LGPL code.
*/
#define _rcu_cmpxchg_pointer(p, old, _new) \
__extension__ \
({ \
__typeof__(*p) _________pold = (old); \
__typeof__(*p) _________pnew = (_new); \
Expand All @@ -101,6 +104,7 @@ extern "C" {
* expanded directly in non-LGPL code.
*/
#define _rcu_xchg_pointer(p, v) \
__extension__ \
({ \
__typeof__(*p) _________pv = (v); \
if (!__builtin_constant_p(v) || \
Expand Down
4 changes: 3 additions & 1 deletion urcu/system.h
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@
* Load a data from shared memory, doing a cache flush if required.
*/
#define CMM_LOAD_SHARED(p) \
__extension__ \
({ \
cmm_smp_rmc(); \
_CMM_LOAD_SHARED(p); \
Expand All @@ -41,13 +42,14 @@
* Identify a shared store. A cmm_smp_wmc() or cmm_smp_mc() should
* follow the store.
*/
#define _CMM_STORE_SHARED(x, v) ({ CMM_ACCESS_ONCE(x) = (v); })
#define _CMM_STORE_SHARED(x, v) __extension__ ({ CMM_ACCESS_ONCE(x) = (v); })

/*
* Store v into x, where x is located in shared memory. Performs the
* required cache flush after writing. Returns v.
*/
#define CMM_STORE_SHARED(x, v) \
__extension__ \
({ \
__typeof__(x) _v = _CMM_STORE_SHARED(x, v); \
cmm_smp_wmc(); \
Expand Down