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@@ -8,9 +8,12 @@
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* you need to test for the feature in boot_cpu_data.
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*/
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-#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr))))
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+#define xchg(ptr, v) \
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+ ((__typeof__(*(ptr)))__xchg((unsigned long)(v), (ptr), sizeof(*(ptr))))
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-struct __xchg_dummy { unsigned long a[100]; };
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+struct __xchg_dummy {
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+ unsigned long a[100];
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+};
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#define __xg(x) ((struct __xchg_dummy *)(x))
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/*
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@@ -27,72 +30,74 @@ struct __xchg_dummy { unsigned long a[100]; };
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* of the instruction set reference 24319102.pdf. We need
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* the reader side to see the coherent 64bit value.
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*/
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-static inline void __set_64bit (unsigned long long * ptr,
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- unsigned int low, unsigned int high)
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+static inline void __set_64bit(unsigned long long *ptr,
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+ unsigned int low, unsigned int high)
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{
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- __asm__ __volatile__ (
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- "\n1:\t"
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- "movl (%0), %%eax\n\t"
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- "movl 4(%0), %%edx\n\t"
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- LOCK_PREFIX "cmpxchg8b (%0)\n\t"
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- "jnz 1b"
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- : /* no outputs */
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- : "D"(ptr),
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- "b"(low),
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- "c"(high)
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- : "ax","dx","memory");
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+ asm volatile("\n1:\t"
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+ "movl (%0), %%eax\n\t"
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+ "movl 4(%0), %%edx\n\t"
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+ LOCK_PREFIX "cmpxchg8b (%0)\n\t"
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+ "jnz 1b"
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+ : /* no outputs */
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+ : "D"(ptr),
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+ "b"(low),
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+ "c"(high)
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+ : "ax", "dx", "memory");
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}
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-static inline void __set_64bit_constant (unsigned long long *ptr,
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- unsigned long long value)
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+static inline void __set_64bit_constant(unsigned long long *ptr,
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+ unsigned long long value)
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{
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- __set_64bit(ptr,(unsigned int)(value), (unsigned int)((value)>>32ULL));
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+ __set_64bit(ptr, (unsigned int)value, (unsigned int)(value >> 32));
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}
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-#define ll_low(x) *(((unsigned int*)&(x))+0)
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-#define ll_high(x) *(((unsigned int*)&(x))+1)
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-static inline void __set_64bit_var (unsigned long long *ptr,
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- unsigned long long value)
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+#define ll_low(x) *(((unsigned int *)&(x)) + 0)
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+#define ll_high(x) *(((unsigned int *)&(x)) + 1)
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+
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+static inline void __set_64bit_var(unsigned long long *ptr,
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+ unsigned long long value)
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{
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- __set_64bit(ptr,ll_low(value), ll_high(value));
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+ __set_64bit(ptr, ll_low(value), ll_high(value));
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}
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-#define set_64bit(ptr,value) \
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-(__builtin_constant_p(value) ? \
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- __set_64bit_constant(ptr, value) : \
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- __set_64bit_var(ptr, value) )
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+#define set_64bit(ptr, value) \
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+ (__builtin_constant_p((value)) \
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+ ? __set_64bit_constant((ptr), (value)) \
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+ : __set_64bit_var((ptr), (value)))
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-#define _set_64bit(ptr,value) \
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-(__builtin_constant_p(value) ? \
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- __set_64bit(ptr, (unsigned int)(value), (unsigned int)((value)>>32ULL) ) : \
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- __set_64bit(ptr, ll_low(value), ll_high(value)) )
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+#define _set_64bit(ptr, value) \
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+ (__builtin_constant_p(value) \
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+ ? __set_64bit(ptr, (unsigned int)(value), \
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+ (unsigned int)((value) >> 32)) \
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+ : __set_64bit(ptr, ll_low((value)), ll_high((value))))
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/*
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* Note: no "lock" prefix even on SMP: xchg always implies lock anyway
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* Note 2: xchg has side effect, so that attribute volatile is necessary,
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* but generally the primitive is invalid, *ptr is output argument. --ANK
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*/
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-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
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+static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
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+ int size)
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{
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switch (size) {
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- case 1:
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- __asm__ __volatile__("xchgb %b0,%1"
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- :"=q" (x)
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- :"m" (*__xg(ptr)), "0" (x)
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- :"memory");
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- break;
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- case 2:
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- __asm__ __volatile__("xchgw %w0,%1"
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- :"=r" (x)
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- :"m" (*__xg(ptr)), "0" (x)
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- :"memory");
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- break;
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- case 4:
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- __asm__ __volatile__("xchgl %0,%1"
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- :"=r" (x)
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- :"m" (*__xg(ptr)), "0" (x)
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- :"memory");
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- break;
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+ case 1:
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+ asm volatile("xchgb %b0,%1"
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+ : "=q" (x)
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+ : "m" (*__xg(ptr)), "0" (x)
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+ : "memory");
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+ break;
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+ case 2:
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+ asm volatile("xchgw %w0,%1"
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+ : "=r" (x)
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+ : "m" (*__xg(ptr)), "0" (x)
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+ : "memory");
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+ break;
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+ case 4:
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+ asm volatile("xchgl %0,%1"
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+ : "=r" (x)
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+ : "m" (*__xg(ptr)), "0" (x)
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+ : "memory");
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+ break;
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}
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return x;
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}
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@@ -105,24 +110,27 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz
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#ifdef CONFIG_X86_CMPXCHG
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#define __HAVE_ARCH_CMPXCHG 1
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-#define cmpxchg(ptr, o, n) \
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- ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \
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- (unsigned long)(n), sizeof(*(ptr))))
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-#define sync_cmpxchg(ptr, o, n) \
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- ((__typeof__(*(ptr)))__sync_cmpxchg((ptr), (unsigned long)(o), \
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- (unsigned long)(n), sizeof(*(ptr))))
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-#define cmpxchg_local(ptr, o, n) \
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- ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
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- (unsigned long)(n), sizeof(*(ptr))))
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+#define cmpxchg(ptr, o, n) \
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+ ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \
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+ (unsigned long)(n), \
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+ sizeof(*(ptr))))
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+#define sync_cmpxchg(ptr, o, n) \
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+ ((__typeof__(*(ptr)))__sync_cmpxchg((ptr), (unsigned long)(o), \
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+ (unsigned long)(n), \
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+ sizeof(*(ptr))))
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+#define cmpxchg_local(ptr, o, n) \
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+ ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
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+ (unsigned long)(n), \
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+ sizeof(*(ptr))))
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#endif
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#ifdef CONFIG_X86_CMPXCHG64
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-#define cmpxchg64(ptr, o, n) \
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- ((__typeof__(*(ptr)))__cmpxchg64((ptr), (unsigned long long)(o), \
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- (unsigned long long)(n)))
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-#define cmpxchg64_local(ptr, o, n) \
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- ((__typeof__(*(ptr)))__cmpxchg64_local((ptr), (unsigned long long)(o),\
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- (unsigned long long)(n)))
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+#define cmpxchg64(ptr, o, n) \
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+ ((__typeof__(*(ptr)))__cmpxchg64((ptr), (unsigned long long)(o), \
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+ (unsigned long long)(n)))
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+#define cmpxchg64_local(ptr, o, n) \
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+ ((__typeof__(*(ptr)))__cmpxchg64_local((ptr), (unsigned long long)(o), \
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+ (unsigned long long)(n)))
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#endif
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static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
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@@ -131,22 +139,22 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
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unsigned long prev;
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switch (size) {
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case 1:
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- __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
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- : "=a"(prev)
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- : "q"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile(LOCK_PREFIX "cmpxchgb %b1,%2"
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+ : "=a"(prev)
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+ : "q"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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case 2:
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- __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
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- : "=a"(prev)
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- : "r"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile(LOCK_PREFIX "cmpxchgw %w1,%2"
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+ : "=a"(prev)
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+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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case 4:
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- __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2"
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- : "=a"(prev)
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- : "r"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile(LOCK_PREFIX "cmpxchgl %1,%2"
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+ : "=a"(prev)
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+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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}
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return old;
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@@ -158,85 +166,88 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
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* isn't.
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*/
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static inline unsigned long __sync_cmpxchg(volatile void *ptr,
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- unsigned long old,
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- unsigned long new, int size)
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+ unsigned long old,
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+ unsigned long new, int size)
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{
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unsigned long prev;
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switch (size) {
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case 1:
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- __asm__ __volatile__("lock; cmpxchgb %b1,%2"
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- : "=a"(prev)
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- : "q"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile("lock; cmpxchgb %b1,%2"
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+ : "=a"(prev)
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+ : "q"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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case 2:
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- __asm__ __volatile__("lock; cmpxchgw %w1,%2"
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- : "=a"(prev)
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- : "r"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile("lock; cmpxchgw %w1,%2"
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+ : "=a"(prev)
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+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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case 4:
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- __asm__ __volatile__("lock; cmpxchgl %1,%2"
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- : "=a"(prev)
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- : "r"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile("lock; cmpxchgl %1,%2"
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+ : "=a"(prev)
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+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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}
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return old;
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}
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static inline unsigned long __cmpxchg_local(volatile void *ptr,
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- unsigned long old, unsigned long new, int size)
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+ unsigned long old,
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+ unsigned long new, int size)
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{
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unsigned long prev;
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switch (size) {
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case 1:
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- __asm__ __volatile__("cmpxchgb %b1,%2"
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- : "=a"(prev)
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- : "q"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile("cmpxchgb %b1,%2"
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+ : "=a"(prev)
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+ : "q"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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case 2:
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- __asm__ __volatile__("cmpxchgw %w1,%2"
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- : "=a"(prev)
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- : "r"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile("cmpxchgw %w1,%2"
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+ : "=a"(prev)
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+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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case 4:
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- __asm__ __volatile__("cmpxchgl %1,%2"
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- : "=a"(prev)
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- : "r"(new), "m"(*__xg(ptr)), "0"(old)
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- : "memory");
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+ asm volatile("cmpxchgl %1,%2"
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+ : "=a"(prev)
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+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
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+ : "memory");
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return prev;
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}
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return old;
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}
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static inline unsigned long long __cmpxchg64(volatile void *ptr,
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- unsigned long long old, unsigned long long new)
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+ unsigned long long old,
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+ unsigned long long new)
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{
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unsigned long long prev;
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- __asm__ __volatile__(LOCK_PREFIX "cmpxchg8b %3"
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- : "=A"(prev)
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- : "b"((unsigned long)new),
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- "c"((unsigned long)(new >> 32)),
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- "m"(*__xg(ptr)),
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- "0"(old)
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- : "memory");
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+ asm volatile(LOCK_PREFIX "cmpxchg8b %3"
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+ : "=A"(prev)
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+ : "b"((unsigned long)new),
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+ "c"((unsigned long)(new >> 32)),
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+ "m"(*__xg(ptr)),
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+ "0"(old)
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+ : "memory");
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return prev;
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}
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static inline unsigned long long __cmpxchg64_local(volatile void *ptr,
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- unsigned long long old, unsigned long long new)
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+ unsigned long long old,
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+ unsigned long long new)
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{
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unsigned long long prev;
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- __asm__ __volatile__("cmpxchg8b %3"
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- : "=A"(prev)
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- : "b"((unsigned long)new),
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- "c"((unsigned long)(new >> 32)),
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- "m"(*__xg(ptr)),
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- "0"(old)
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- : "memory");
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+ asm volatile("cmpxchg8b %3"
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+ : "=A"(prev)
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+ : "b"((unsigned long)new),
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+ "c"((unsigned long)(new >> 32)),
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+ "m"(*__xg(ptr)),
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+ "0"(old)
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+ : "memory");
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return prev;
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}
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@@ -252,7 +263,7 @@ extern unsigned long cmpxchg_386_u16(volatile void *, u16, u16);
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extern unsigned long cmpxchg_386_u32(volatile void *, u32, u32);
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static inline unsigned long cmpxchg_386(volatile void *ptr, unsigned long old,
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- unsigned long new, int size)
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+ unsigned long new, int size)
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{
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switch (size) {
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case 1:
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