Changes in kernel/arch/arm32/src/atomic.c [133461c:c5429fe] in mainline

File:

• kernel/arch/arm32/src/atomic.c (modified) (6 diffs)

kernel/arch/arm32/src/atomic.c

@@ -38 +38 @@
 #include <arch/asm.h>
 
-unsigned __atomic_fetch_add_4(volatile void *mem0, unsigned val, int model)
+unsigned __atomic_fetch_add_4(volatile unsigned *mem, unsigned val, int model)
 {
-        volatile unsigned *mem = mem0;
-
         /*
          * This implementation is for UP pre-ARMv6 systems where we do not have
@@ -53 +51 @@
 }
 
-unsigned __atomic_fetch_sub_4(volatile void *mem0, unsigned val, int model)
+unsigned __atomic_fetch_sub_4(volatile unsigned *mem, unsigned val, int model)
 {
-        volatile unsigned *mem = mem0;
-
         ipl_t ipl = interrupts_disable();
         unsigned ret = *mem;
@@ -71 +67 @@
  * returns the previous value of \a *ptr.
  */
-unsigned __sync_val_compare_and_swap_4(volatile void *ptr0, unsigned expected,
-    unsigned new_val)
+void *__sync_val_compare_and_swap_4(void **ptr, void *expected, void *new_val)
 {
-        volatile unsigned *ptr = ptr0;
-
         /*
          * Using an interrupt disabling spinlock might still lead to deadlock
@@ -85 +78 @@
         irq_spinlock_lock(&cas_lock, true);
 
-        unsigned cur_val = *ptr;
+        void *cur_val = *ptr;
 
         if (cur_val == expected) {
@@ -103 +96 @@
 /* Naive implementations of the newer intrinsics. */
 
-_Bool __atomic_compare_exchange_4(volatile void *mem, void *expected0,
-    unsigned desired, _Bool weak, int success, int failure)
+_Bool __atomic_compare_exchange_4(void **mem, void **expected, void *desired, _Bool weak, int success, int failure)
 {
-        unsigned *expected = expected0;
-
         (void) weak;
         (void) success;
         (void) failure;
 
-        unsigned old = *expected;
-        unsigned new = __sync_val_compare_and_swap_4(mem, old, desired);
+        void *old = *expected;
+        void *new = __sync_val_compare_and_swap_4(mem, old, desired);
         if (old == new) {
                 return 1;
@@ -122 +112 @@
 }
 
-unsigned __atomic_exchange_4(volatile void *mem0, unsigned val, int model)
+void *__atomic_exchange_4(void **mem, void *val, int model)
 {
-        volatile unsigned *mem = mem0;
-
         (void) model;
 
         irq_spinlock_lock(&cas_lock, true);
-        unsigned old = *mem;
+        void *old = *mem;
         *mem = val;
         irq_spinlock_unlock(&cas_lock, true);