1 files changed, 31 insertions, 0 deletions
diff --git a/libc/kernel/arch-x86/asm/cmpxchg_32.h b/libc/kernel/arch-x86/asm/cmpxchg_32.h
new file mode 100644
index 0000000..3632f4c
--- /dev/null
+++ b/libc/kernel/arch-x86/asm/cmpxchg_32.h
@@ -0,0 +1,31 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 __ASM_CMPXCHG_H
+#define __ASM_CMPXCHG_H
+
+#include <linux/bitops.h>  
+
+#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr))))
+
+struct __xchg_dummy { unsigned long a[100]; };
+#define __xg(x) ((struct __xchg_dummy *)(x))
+
+#define ll_low(x) *(((unsigned int*)&(x))+0)
+#define ll_high(x) *(((unsigned int*)&(x))+1)
+#define set_64bit(ptr,value)  (__builtin_constant_p(value) ?   __set_64bit_constant(ptr, value) :   __set_64bit_var(ptr, value) )
+#define _set_64bit(ptr,value)  (__builtin_constant_p(value) ?   __set_64bit(ptr, (unsigned int)(value), (unsigned int)((value)>>32ULL) ) :   __set_64bit(ptr, ll_low(value), ll_high(value)) )
+
+#define cmpxchg(ptr,o,n)  ({   __typeof__(*(ptr)) __ret;   if (likely(boot_cpu_data.x86 > 3))   __ret = __cmpxchg((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   else   __ret = cmpxchg_386((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   __ret;  })
+#define cmpxchg_local(ptr,o,n)  ({   __typeof__(*(ptr)) __ret;   if (likely(boot_cpu_data.x86 > 3))   __ret = __cmpxchg_local((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   else   __ret = cmpxchg_386((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   __ret;  })
+#define cmpxchg64(ptr,o,n)  ((__typeof__(*(ptr)))__cmpxchg64((ptr),(unsigned long long)(o),  (unsigned long long)(n)))
+#define cmpxchg64_local(ptr,o,n)  ((__typeof__(*(ptr)))__cmpxchg64_local((ptr),(unsigned long long)(o),  (unsigned long long)(n)))
+#endif