1 files changed, 39 insertions, 0 deletions
diff --git a/libc/kernel/arch-x86/asm/atomic_32.h b/libc/kernel/arch-x86/asm/atomic_32.h
new file mode 100644
index 0000000..677aac8
--- /dev/null
+++ b/libc/kernel/arch-x86/asm/atomic_32.h
@@ -0,0 +1,39 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __ARCH_I386_ATOMIC__
+#define __ARCH_I386_ATOMIC__
+
+#include <linux/compiler.h>
+#include <asm/processor.h>
+#include <asm/cmpxchg.h>
+
+typedef struct { int counter; } atomic_t;
+
+#define ATOMIC_INIT(i) { (i) }
+
+#define atomic_read(v) ((v)->counter)
+
+#define atomic_set(v,i) (((v)->counter) = (i))
+
+#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), (new)))
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+#define atomic_inc_return(v) (atomic_add_return(1,v))
+#define atomic_dec_return(v) (atomic_sub_return(1,v))
+#define atomic_clear_mask(mask, addr)  __asm__ __volatile__(LOCK_PREFIX "andl %0,%1"  : : "r" (~(mask)),"m" (*addr) : "memory")
+#define atomic_set_mask(mask, addr)  __asm__ __volatile__(LOCK_PREFIX "orl %0,%1"  : : "r" (mask),"m" (*(addr)) : "memory")
+#define smp_mb__before_atomic_dec() barrier()
+#define smp_mb__after_atomic_dec() barrier()
+#define smp_mb__before_atomic_inc() barrier()
+#define smp_mb__after_atomic_inc() barrier()
+#include <asm-generic/atomic.h>
+#endif