1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef __ARCH_I386_ATOMIC__ 20 #define __ARCH_I386_ATOMIC__ 21 #include <linux/compiler.h> 22 #include <asm/processor.h> 23 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 24 #include <asm/cmpxchg.h> 25 typedef struct { int counter; } atomic_t; 26 #define ATOMIC_INIT(i) { (i) } 27 #define atomic_read(v) ((v)->counter) 28 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 29 #define atomic_set(v,i) (((v)->counter) = (i)) 30 #define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new))) 31 #define atomic_xchg(v, new) (xchg(&((v)->counter), (new))) 32 #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) 33 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 34 #define atomic_inc_return(v) (atomic_add_return(1,v)) 35 #define atomic_dec_return(v) (atomic_sub_return(1,v)) 36 #define atomic_clear_mask(mask, addr) __asm__ __volatile__(LOCK_PREFIX "andl %0,%1" : : "r" (~(mask)),"m" (*addr) : "memory") 37 #define atomic_set_mask(mask, addr) __asm__ __volatile__(LOCK_PREFIX "orl %0,%1" : : "r" (mask),"m" (*(addr)) : "memory") 38 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 39 #define smp_mb__before_atomic_dec() barrier() 40 #define smp_mb__after_atomic_dec() barrier() 41 #define smp_mb__before_atomic_inc() barrier() 42 #define smp_mb__after_atomic_inc() barrier() 43 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 44 #include <asm-generic/atomic.h> 45 #endif 46
