intrinsics: Remove unused definitions

inc/intrinsics.h

@@ -80,85 +80,6 @@ struct exception_frame {
  * confirmed on Cortex-M3. */
 #define IRQ_restore(oldpri) write_special(basepri, (oldpri))
 
-static inline uint16_t _rev16(uint16_t x)
-{
-    uint16_t result;
-    asm volatile ("rev16 %0,%1" : "=r" (result) : "r" (x));
-    return result;
-}
-
-static inline uint32_t _rev32(uint32_t x)
-{
-    uint32_t result;
-    asm volatile ("rev %0,%1" : "=r" (result) : "r" (x));
-    return result;
-}
-
-static inline uint32_t _rbit32(uint32_t x)
-{
-    uint32_t result;
-    asm volatile ("rbit %0,%1" : "=r" (result) : "r" (x));
-    return result;
-}
-
-extern void __bad_cmpxchg(volatile void *ptr, int size);
-
-static always_inline unsigned long __cmpxchg(
-    volatile void *ptr, unsigned long old, unsigned long new, int size)
-{
-    unsigned long oldval, res;
-
-    switch (size) {
-    case 1:
-        do {
-            asm volatile("    ldrexb %1,[%2]      \n"
-                         "    movs   %0,#0        \n"
-                         "    cmp    %1,%3        \n"
-                         "    it     eq           \n"
-                         "    strexbeq %0,%4,[%2] \n"
-                         : "=&r" (res), "=&r" (oldval)
-                         : "r" (ptr), "Ir" (old), "r" (new)
-                         : "memory", "cc");
-        } while (res);
-        break;
-    case 2:
-        do {
-            asm volatile("    ldrexh %1,[%2]      \n"
-                         "    movs   %0,#0        \n"
-                         "    cmp    %1,%3        \n"
-                         "    it     eq           \n"
-                         "    strexheq %0,%4,[%2] \n"
-                         : "=&r" (res), "=&r" (oldval)
-                         : "r" (ptr), "Ir" (old), "r" (new)
-                         : "memory", "cc");
-        } while (res);
-        break;
-    case 4:
-        do {
-            asm volatile("    ldrex  %1,[%2]      \n"
-                         "    movs   %0,#0        \n"
-                         "    cmp    %1,%3        \n"
-                         "    it     eq           \n"
-                         "    strexeq %0,%4,[%2]  \n"
-                         : "=&r" (res), "=&r" (oldval)
-                         : "r" (ptr), "Ir" (old), "r" (new)
-                         : "memory", "cc");
-        } while (res);
-        break;
-    default:
-        __bad_cmpxchg(ptr, size);
-        oldval = 0;
-    }
-
-    return oldval;
-}
-
-#define cmpxchg(ptr,o,n)                                \
-    ((__typeof__(*(ptr)))__cmpxchg((ptr),               \
-                                   (unsigned long)(o),  \
-                                   (unsigned long)(n),  \
-                                   sizeof(*(ptr))))
-
 /* Cortex initialisation */
 void cortex_init(void);