X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=urcu%2Fuatomic_arch_x86.h;h=f57d46dd1f8cd876e8969ddb158e6267acd110c7;hb=985b35b18796edab591775098fef83a50a1e55ce;hp=e358be3673552dd9919ca6579e2c83071410157a;hpb=8760d94e0ef6d52260765a9246aaac073613055e;p=urcu.git

diff --git a/urcu/uatomic_arch_x86.h b/urcu/uatomic_arch_x86.h
index e358be3..f57d46d 100644
--- a/urcu/uatomic_arch_x86.h
+++ b/urcu/uatomic_arch_x86.h
@@ -23,22 +23,13 @@
 #include <urcu/compiler.h>
 #include <urcu/system.h>
 
+#define UATOMIC_HAS_ATOMIC_BYTE
+#define UATOMIC_HAS_ATOMIC_SHORT
+
 #ifdef __cplusplus
 extern "C" {
 #endif 
 
-#ifndef __SIZEOF_LONG__
-#if defined(__x86_64__) || defined(__amd64__)
-#define __SIZEOF_LONG__ 8
-#else
-#define __SIZEOF_LONG__ 4
-#endif
-#endif
-
-#ifndef BITS_PER_LONG
-#define BITS_PER_LONG	(__SIZEOF_LONG__ * 8)
-#endif
-
 /*
  * Derived from AO_compare_and_swap() and AO_test_and_set_full().
  */
@@ -48,7 +39,7 @@ struct __uatomic_dummy {
 };
 #define __hp(x)	((struct __uatomic_dummy *)(x))
 
-#define _uatomic_set(addr, v)	STORE_SHARED(*(addr), (v))
+#define _uatomic_set(addr, v)	CMM_STORE_SHARED(*(addr), (v))
 
 /* cmpxchg */
 
@@ -90,7 +81,7 @@ unsigned long __uatomic_cmpxchg(void *addr, unsigned long old,
 			: "memory");
 		return result;
 	}
-#if (BITS_PER_LONG == 64)
+#if (CAA_BITS_PER_LONG == 64)
 	case 8:
 	{
 		unsigned long result = old;
@@ -152,7 +143,7 @@ unsigned long __uatomic_exchange(void *addr, unsigned long val, int len)
 			: "memory");
 		return result;
 	}
-#if (BITS_PER_LONG == 64)
+#if (CAA_BITS_PER_LONG == 64)
 	case 8:
 	{
 		unsigned long result;
@@ -215,7 +206,7 @@ unsigned long __uatomic_add_return(void *addr, unsigned long val,
 			: "memory");
 		return result + (unsigned int)val;
 	}
-#if (BITS_PER_LONG == 64)
+#if (CAA_BITS_PER_LONG == 64)
 	case 8:
 	{
 		unsigned long result = val;
@@ -240,6 +231,60 @@ unsigned long __uatomic_add_return(void *addr, unsigned long val,
 						  (unsigned long)(v),	\
 						  sizeof(*(addr))))
 
+/* uatomic_or */
+
+static inline __attribute__((always_inline))
+void __uatomic_or(void *addr, unsigned long val, int len)
+{
+	switch (len) {
+	case 1:
+	{
+		__asm__ __volatile__(
+		"lock; orb %1, %0"
+			: "=m"(*__hp(addr))
+			: "iq" ((unsigned char)val)
+			: "memory");
+		return;
+	}
+	case 2:
+	{
+		__asm__ __volatile__(
+		"lock; orw %1, %0"
+			: "=m"(*__hp(addr))
+			: "ir" ((unsigned short)val)
+			: "memory");
+		return;
+	}
+	case 4:
+	{
+		__asm__ __volatile__(
+		"lock; orl %1, %0"
+			: "=m"(*__hp(addr))
+			: "ir" ((unsigned int)val)
+			: "memory");
+		return;
+	}
+#if (CAA_BITS_PER_LONG == 64)
+	case 8:
+	{
+		__asm__ __volatile__(
+		"lock; orq %1, %0"
+			: "=m"(*__hp(addr))
+			: "er" ((unsigned long)val)
+			: "memory");
+		return;
+	}
+#endif
+	}
+	/* generate an illegal instruction. Cannot catch this with linker tricks
+	 * when optimizations are disabled. */
+	__asm__ __volatile__("ud2");
+	return;
+}
+
+#define _uatomic_or(addr, v)						   \
+	(__uatomic_or((addr), (unsigned long)(v), sizeof(*(addr))))
+
 /* uatomic_add */
 
 static inline __attribute__((always_inline))
@@ -273,7 +318,7 @@ void __uatomic_add(void *addr, unsigned long val, int len)
 			: "memory");
 		return;
 	}
-#if (BITS_PER_LONG == 64)
+#if (CAA_BITS_PER_LONG == 64)
 	case 8:
 	{
 		__asm__ __volatile__(
@@ -328,7 +373,7 @@ void __uatomic_inc(void *addr, int len)
 			: "memory");
 		return;
 	}
-#if (BITS_PER_LONG == 64)
+#if (CAA_BITS_PER_LONG == 64)
 	case 8:
 	{
 		__asm__ __volatile__(
@@ -381,7 +426,7 @@ void __uatomic_dec(void *addr, int len)
 			: "memory");
 		return;
 	}
-#if (BITS_PER_LONG == 64)
+#if (CAA_BITS_PER_LONG == 64)
 	case 8:
 	{
 		__asm__ __volatile__(
@@ -401,7 +446,7 @@ void __uatomic_dec(void *addr, int len)
 
 #define _uatomic_dec(addr)	(__uatomic_dec((addr), sizeof(*(addr))))
 
-#if ((BITS_PER_LONG != 64) && defined(CONFIG_RCU_COMPAT_ARCH))
+#if ((CAA_BITS_PER_LONG != 64) && defined(CONFIG_RCU_COMPAT_ARCH))
 extern int __rcu_cas_avail;
 extern int __rcu_cas_init(void);
 
@@ -437,8 +482,15 @@ extern unsigned long _compat_uatomic_cmpxchg(void *addr, unsigned long old,
 						(unsigned long)(_new), 	       \
 						sizeof(*(addr))))
 
-extern unsigned long _compat_uatomic_xchg(void *addr,
-					  unsigned long _new, int len);
+extern unsigned long _compat_uatomic_or(void *addr,
+				        unsigned long _new, int len);
+#define compat_uatomic_or(addr, v)				       \
+	((__typeof__(*(addr))) _compat_uatomic_or((addr),	       \
+						  (unsigned long)(v),  \
+						  sizeof(*(addr))))
+
+extern unsigned long _compat_uatomic_add_return(void *addr,
+						unsigned long _new, int len);
 #define compat_uatomic_add_return(addr, v)				       \
 	((__typeof__(*(addr))) _compat_uatomic_add_return((addr),	       \
 						(unsigned long)(v), 	       \
@@ -463,6 +515,8 @@ extern unsigned long _compat_uatomic_xchg(void *addr,
 		UATOMIC_COMPAT(cmpxchg(addr, old, _new))
 #define uatomic_xchg(addr, v)			\
 		UATOMIC_COMPAT(xchg(addr, v))
+#define uatomic_or(addr, v)		\
+		UATOMIC_COMPAT(or(addr, v))
 #define uatomic_add_return(addr, v)		\
 		UATOMIC_COMPAT(add_return(addr, v))