X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Fuatomic%2Fx86.h;fp=urcu%2Fuatomic%2Fx86.h;h=0000000000000000000000000000000000000000;hp=129a2f5670385880870912235a14a63a6d0ea99e;hb=6893800a4d1cc14dff0395ddcd660a5138db183d;hpb=a59f39055b5ecb77b68cf78b9839aa9e8e4ec332

diff --git a/urcu/uatomic/x86.h b/urcu/uatomic/x86.h
deleted file mode 100644
index 129a2f5..0000000
--- a/urcu/uatomic/x86.h
+++ /dev/null
@@ -1,629 +0,0 @@
-#ifndef _URCU_ARCH_UATOMIC_X86_H
-#define _URCU_ARCH_UATOMIC_X86_H
-
-/*
- * Copyright (c) 1991-1994 by Xerox Corporation.  All rights reserved.
- * Copyright (c) 1996-1999 by Silicon Graphics.  All rights reserved.
- * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P.
- * Copyright (c) 2009      Mathieu Desnoyers
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose,  provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
- *
- * Code inspired from libuatomic_ops-1.2, inherited in part from the
- * Boehm-Demers-Weiser conservative garbage collector.
- */
-
-#include <urcu/compiler.h>
-#include <urcu/system.h>
-
-#define UATOMIC_HAS_ATOMIC_BYTE
-#define UATOMIC_HAS_ATOMIC_SHORT
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Derived from AO_compare_and_swap() and AO_test_and_set_full().
- */
-
-struct __uatomic_dummy {
-	unsigned long v[10];
-};
-#define __hp(x)	((struct __uatomic_dummy *)(x))
-
-#define _uatomic_set(addr, v)	((void) CMM_STORE_SHARED(*(addr), (v)))
-
-/* cmpxchg */
-
-static inline __attribute__((always_inline))
-unsigned long __uatomic_cmpxchg(void *addr, unsigned long old,
-			      unsigned long _new, int len)
-{
-	switch (len) {
-	case 1:
-	{
-		unsigned char result = old;
-
-		__asm__ __volatile__(
-		"lock; cmpxchgb %2, %1"
-			: "+a"(result), "+m"(*__hp(addr))
-			: "q"((unsigned char)_new)
-			: "memory");
-		return result;
-	}
-	case 2:
-	{
-		unsigned short result = old;
-
-		__asm__ __volatile__(
-		"lock; cmpxchgw %2, %1"
-			: "+a"(result), "+m"(*__hp(addr))
-			: "r"((unsigned short)_new)
-			: "memory");
-		return result;
-	}
-	case 4:
-	{
-		unsigned int result = old;
-
-		__asm__ __volatile__(
-		"lock; cmpxchgl %2, %1"
-			: "+a"(result), "+m"(*__hp(addr))
-			: "r"((unsigned int)_new)
-			: "memory");
-		return result;
-	}
-#if (CAA_BITS_PER_LONG == 64)
-	case 8:
-	{
-		unsigned long result = old;
-
-		__asm__ __volatile__(
-		"lock; cmpxchgq %2, %1"
-			: "+a"(result), "+m"(*__hp(addr))
-			: "r"((unsigned long)_new)
-			: "memory");
-		return result;
-	}
-#endif
-	}
-	/*
-	 * generate an illegal instruction. Cannot catch this with
-	 * linker tricks when optimizations are disabled.
-	 */
-	__asm__ __volatile__("ud2");
-	return 0;
-}
-
-#define _uatomic_cmpxchg(addr, old, _new)				      \
-	((__typeof__(*(addr))) __uatomic_cmpxchg((addr),		      \
-						caa_cast_long_keep_sign(old), \
-						caa_cast_long_keep_sign(_new),\
-						sizeof(*(addr))))
-
-/* xchg */
-
-static inline __attribute__((always_inline))
-unsigned long __uatomic_exchange(void *addr, unsigned long val, int len)
-{
-	/* Note: the "xchg" instruction does not need a "lock" prefix. */
-	switch (len) {
-	case 1:
-	{
-		unsigned char result;
-		__asm__ __volatile__(
-		"xchgb %0, %1"
-			: "=q"(result), "+m"(*__hp(addr))
-			: "0" ((unsigned char)val)
-			: "memory");
-		return result;
-	}
-	case 2:
-	{
-		unsigned short result;
-		__asm__ __volatile__(
-		"xchgw %0, %1"
-			: "=r"(result), "+m"(*__hp(addr))
-			: "0" ((unsigned short)val)
-			: "memory");
-		return result;
-	}
-	case 4:
-	{
-		unsigned int result;
-		__asm__ __volatile__(
-		"xchgl %0, %1"
-			: "=r"(result), "+m"(*__hp(addr))
-			: "0" ((unsigned int)val)
-			: "memory");
-		return result;
-	}
-#if (CAA_BITS_PER_LONG == 64)
-	case 8:
-	{
-		unsigned long result;
-		__asm__ __volatile__(
-		"xchgq %0, %1"
-			: "=r"(result), "+m"(*__hp(addr))
-			: "0" ((unsigned long)val)
-			: "memory");
-		return result;
-	}
-#endif
-	}
-	/*
-	 * generate an illegal instruction. Cannot catch this with
-	 * linker tricks when optimizations are disabled.
-	 */
-	__asm__ __volatile__("ud2");
-	return 0;
-}
-
-#define _uatomic_xchg(addr, v)						      \
-	((__typeof__(*(addr))) __uatomic_exchange((addr),		      \
-						caa_cast_long_keep_sign(v),   \
-						sizeof(*(addr))))
-
-/* uatomic_add_return */
-
-static inline __attribute__((always_inline))
-unsigned long __uatomic_add_return(void *addr, unsigned long val,
-				 int len)
-{
-	switch (len) {
-	case 1:
-	{
-		unsigned char result = val;
-
-		__asm__ __volatile__(
-		"lock; xaddb %1, %0"
-			: "+m"(*__hp(addr)), "+q" (result)
-			:
-			: "memory");
-		return result + (unsigned char)val;
-	}
-	case 2:
-	{
-		unsigned short result = val;
-
-		__asm__ __volatile__(
-		"lock; xaddw %1, %0"
-			: "+m"(*__hp(addr)), "+r" (result)
-			:
-			: "memory");
-		return result + (unsigned short)val;
-	}
-	case 4:
-	{
-		unsigned int result = val;
-
-		__asm__ __volatile__(
-		"lock; xaddl %1, %0"
-			: "+m"(*__hp(addr)), "+r" (result)
-			:
-			: "memory");
-		return result + (unsigned int)val;
-	}
-#if (CAA_BITS_PER_LONG == 64)
-	case 8:
-	{
-		unsigned long result = val;
-
-		__asm__ __volatile__(
-		"lock; xaddq %1, %0"
-			: "+m"(*__hp(addr)), "+r" (result)
-			:
-			: "memory");
-		return result + (unsigned long)val;
-	}
-#endif
-	}
-	/*
-	 * generate an illegal instruction. Cannot catch this with
-	 * linker tricks when optimizations are disabled.
-	 */
-	__asm__ __volatile__("ud2");
-	return 0;
-}
-
-#define _uatomic_add_return(addr, v)					    \
-	((__typeof__(*(addr))) __uatomic_add_return((addr),		    \
-						caa_cast_long_keep_sign(v), \
-						sizeof(*(addr))))
-
-/* uatomic_and */
-
-static inline __attribute__((always_inline))
-void __uatomic_and(void *addr, unsigned long val, int len)
-{
-	switch (len) {
-	case 1:
-	{
-		__asm__ __volatile__(
-		"lock; andb %1, %0"
-			: "=m"(*__hp(addr))
-			: "iq" ((unsigned char)val)
-			: "memory");
-		return;
-	}
-	case 2:
-	{
-		__asm__ __volatile__(
-		"lock; andw %1, %0"
-			: "=m"(*__hp(addr))
-			: "ir" ((unsigned short)val)
-			: "memory");
-		return;
-	}
-	case 4:
-	{
-		__asm__ __volatile__(
-		"lock; andl %1, %0"
-			: "=m"(*__hp(addr))
-			: "ir" ((unsigned int)val)
-			: "memory");
-		return;
-	}
-#if (CAA_BITS_PER_LONG == 64)
-	case 8:
-	{
-		__asm__ __volatile__(
-		"lock; andq %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_and(addr, v)						   \
-	(__uatomic_and((addr), caa_cast_long_keep_sign(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), caa_cast_long_keep_sign(v), sizeof(*(addr))))
-
-/* uatomic_add */
-
-static inline __attribute__((always_inline))
-void __uatomic_add(void *addr, unsigned long val, int len)
-{
-	switch (len) {
-	case 1:
-	{
-		__asm__ __volatile__(
-		"lock; addb %1, %0"
-			: "=m"(*__hp(addr))
-			: "iq" ((unsigned char)val)
-			: "memory");
-		return;
-	}
-	case 2:
-	{
-		__asm__ __volatile__(
-		"lock; addw %1, %0"
-			: "=m"(*__hp(addr))
-			: "ir" ((unsigned short)val)
-			: "memory");
-		return;
-	}
-	case 4:
-	{
-		__asm__ __volatile__(
-		"lock; addl %1, %0"
-			: "=m"(*__hp(addr))
-			: "ir" ((unsigned int)val)
-			: "memory");
-		return;
-	}
-#if (CAA_BITS_PER_LONG == 64)
-	case 8:
-	{
-		__asm__ __volatile__(
-		"lock; addq %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_add(addr, v)						   \
-	(__uatomic_add((addr), caa_cast_long_keep_sign(v), sizeof(*(addr))))
-
-
-/* uatomic_inc */
-
-static inline __attribute__((always_inline))
-void __uatomic_inc(void *addr, int len)
-{
-	switch (len) {
-	case 1:
-	{
-		__asm__ __volatile__(
-		"lock; incb %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-	case 2:
-	{
-		__asm__ __volatile__(
-		"lock; incw %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-	case 4:
-	{
-		__asm__ __volatile__(
-		"lock; incl %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-#if (CAA_BITS_PER_LONG == 64)
-	case 8:
-	{
-		__asm__ __volatile__(
-		"lock; incq %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-#endif
-	}
-	/* generate an illegal instruction. Cannot catch this with linker tricks
-	 * when optimizations are disabled. */
-	__asm__ __volatile__("ud2");
-	return;
-}
-
-#define _uatomic_inc(addr)	(__uatomic_inc((addr), sizeof(*(addr))))
-
-/* uatomic_dec */
-
-static inline __attribute__((always_inline))
-void __uatomic_dec(void *addr, int len)
-{
-	switch (len) {
-	case 1:
-	{
-		__asm__ __volatile__(
-		"lock; decb %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-	case 2:
-	{
-		__asm__ __volatile__(
-		"lock; decw %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-	case 4:
-	{
-		__asm__ __volatile__(
-		"lock; decl %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-#if (CAA_BITS_PER_LONG == 64)
-	case 8:
-	{
-		__asm__ __volatile__(
-		"lock; decq %0"
-			: "=m"(*__hp(addr))
-			:
-			: "memory");
-		return;
-	}
-#endif
-	}
-	/*
-	 * generate an illegal instruction. Cannot catch this with
-	 * linker tricks when optimizations are disabled.
-	 */
-	__asm__ __volatile__("ud2");
-	return;
-}
-
-#define _uatomic_dec(addr)	(__uatomic_dec((addr), sizeof(*(addr))))
-
-#if ((CAA_BITS_PER_LONG != 64) && defined(CONFIG_RCU_COMPAT_ARCH))
-extern int __rcu_cas_avail;
-extern int __rcu_cas_init(void);
-
-#define UATOMIC_COMPAT(insn)							\
-	((caa_likely(__rcu_cas_avail > 0))						\
-	? (_uatomic_##insn)							\
-		: ((caa_unlikely(__rcu_cas_avail < 0)				\
-			? ((__rcu_cas_init() > 0)				\
-				? (_uatomic_##insn)				\
-				: (compat_uatomic_##insn))			\
-			: (compat_uatomic_##insn))))
-
-/*
- * We leave the return value so we don't break the ABI, but remove the
- * return value from the API.
- */
-extern unsigned long _compat_uatomic_set(void *addr,
-					 unsigned long _new, int len);
-#define compat_uatomic_set(addr, _new)				     	       \
-	((void) _compat_uatomic_set((addr),				       \
-				caa_cast_long_keep_sign(_new),		       \
-				sizeof(*(addr))))
-
-
-extern unsigned long _compat_uatomic_xchg(void *addr,
-					  unsigned long _new, int len);
-#define compat_uatomic_xchg(addr, _new)					       \
-	((__typeof__(*(addr))) _compat_uatomic_xchg((addr),		       \
-						caa_cast_long_keep_sign(_new), \
-						sizeof(*(addr))))
-
-extern unsigned long _compat_uatomic_cmpxchg(void *addr, unsigned long old,
-					     unsigned long _new, int len);
-#define compat_uatomic_cmpxchg(addr, old, _new)				       \
-	((__typeof__(*(addr))) _compat_uatomic_cmpxchg((addr),		       \
-						caa_cast_long_keep_sign(old),  \
-						caa_cast_long_keep_sign(_new), \
-						sizeof(*(addr))))
-
-extern void _compat_uatomic_and(void *addr, unsigned long _new, int len);
-#define compat_uatomic_and(addr, v)				       \
-	(_compat_uatomic_and((addr),				       \
-			caa_cast_long_keep_sign(v),		       \
-			sizeof(*(addr))))
-
-extern void _compat_uatomic_or(void *addr, unsigned long _new, int len);
-#define compat_uatomic_or(addr, v)				       \
-	(_compat_uatomic_or((addr),				       \
-			  caa_cast_long_keep_sign(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),     	    \
-						caa_cast_long_keep_sign(v), \
-						sizeof(*(addr))))
-
-#define compat_uatomic_add(addr, v)					       \
-		((void)compat_uatomic_add_return((addr), (v)))
-#define compat_uatomic_inc(addr)					       \
-		(compat_uatomic_add((addr), 1))
-#define compat_uatomic_dec(addr)					       \
-		(compat_uatomic_add((addr), -1))
-
-#else
-#define UATOMIC_COMPAT(insn)	(_uatomic_##insn)
-#endif
-
-/* Read is atomic even in compat mode */
-#define uatomic_set(addr, v)			\
-		UATOMIC_COMPAT(set(addr, v))
-
-#define uatomic_cmpxchg(addr, old, _new)	\
-		UATOMIC_COMPAT(cmpxchg(addr, old, _new))
-#define uatomic_xchg(addr, v)			\
-		UATOMIC_COMPAT(xchg(addr, v))
-
-#define uatomic_and(addr, v)		\
-		UATOMIC_COMPAT(and(addr, v))
-#define cmm_smp_mb__before_uatomic_and()	cmm_barrier()
-#define cmm_smp_mb__after_uatomic_and()		cmm_barrier()
-
-#define uatomic_or(addr, v)		\
-		UATOMIC_COMPAT(or(addr, v))
-#define cmm_smp_mb__before_uatomic_or()		cmm_barrier()
-#define cmm_smp_mb__after_uatomic_or()		cmm_barrier()
-
-#define uatomic_add_return(addr, v)		\
-		UATOMIC_COMPAT(add_return(addr, v))
-
-#define uatomic_add(addr, v)	UATOMIC_COMPAT(add(addr, v))
-#define cmm_smp_mb__before_uatomic_add()	cmm_barrier()
-#define cmm_smp_mb__after_uatomic_add()		cmm_barrier()
-
-#define uatomic_inc(addr)	UATOMIC_COMPAT(inc(addr))
-#define cmm_smp_mb__before_uatomic_inc()	cmm_barrier()
-#define cmm_smp_mb__after_uatomic_inc()		cmm_barrier()
-
-#define uatomic_dec(addr)	UATOMIC_COMPAT(dec(addr))
-#define cmm_smp_mb__before_uatomic_dec()	cmm_barrier()
-#define cmm_smp_mb__after_uatomic_dec()		cmm_barrier()
-
-#ifdef __cplusplus
-}
-#endif
-
-#include <urcu/uatomic/generic.h>
-
-#endif /* _URCU_ARCH_UATOMIC_X86_H */