/*
* Copyright ( c ) 2003 - 2011 Hewlett - Packard Development Company , L . P .
*
* Permission is hereby granted , free of charge , to any person obtaining a copy
* of this software and associated documentation files ( the " Software " ) , to deal
* in the Software without restriction , including without limitation the rights
* to use , copy , modify , merge , publish , distribute , sublicense , and / or sell
* copies of the Software , and to permit persons to whom the Software is
* furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM , DAMAGES OR OTHER
* LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE , ARISING FROM ,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE .
*/
#include "../all_atomic_load_store.h"
#include "../all_acquire_release_volatile.h"
#include "../test_and_set_t_is_char.h"
#ifdef _ILP32
/* 32-bit HP/UX code. */
/* This requires pointer "swizzling". Pointers need to be expanded */
/* to 64 bits using the addp4 instruction before use. This makes it */
/* hard to share code, but we try anyway. */
# define AO_LEN "4"
/* We assume that addr always appears in argument position 1 in asm */
/* code. If it is clobbered due to swizzling, we also need it in */
/* second position. Any later arguments are referenced symbolically, */
/* so that we don't have to worry about their position. This requires*/
/* gcc 3.1, but you shouldn't be using anything older than that on */
/* IA64 anyway. */
/* The AO_MASK macro is a workaround for the fact that HP/UX gcc */
/* appears to otherwise store 64-bit pointers in ar.ccv, i.e. it */
/* doesn't appear to clear high bits in a pointer value we pass into */
/* assembly code, even if it is supposedly of type AO_t. */
# define AO_IN_ADDR "1" (addr)
# define AO_OUT_ADDR , "=r" (addr)
# define AO_SWIZZLE "addp4 %1=0,%1;;\n"
# define AO_MASK(ptr) __asm__ __volatile__("zxt4 %1=%1" : "=r" (ptr) : "0" (ptr))
#else
# define AO_LEN "8"
# define AO_IN_ADDR "r" (addr)
# define AO_OUT_ADDR
# define AO_SWIZZLE
# define AO_MASK(ptr) /* empty */
#endif /* !_ILP32 */
AO_INLINE void
AO_nop_full(void )
{
__asm__ __volatile__("mf" : : : "memory" );
}
#define AO_HAVE_nop_full
#ifndef AO_PREFER_GENERALIZED
AO_INLINE AO_t
AO_fetch_and_add1_acquire (volatile AO_t *addr)
{
AO_t result;
__asm__ __volatile__ (AO_SWIZZLE
"fetchadd" AO_LEN ".acq %0=[%1],1" :
"=r" (result) AO_OUT_ADDR: AO_IN_ADDR :"memory" );
return result;
}
#define AO_HAVE_fetch_and_add1_acquire
AO_INLINE AO_t
AO_fetch_and_add1_release (volatile AO_t *addr)
{
AO_t result;
__asm__ __volatile__ (AO_SWIZZLE
"fetchadd" AO_LEN ".rel %0=[%1],1" :
"=r" (result) AO_OUT_ADDR: AO_IN_ADDR :"memory" );
return result;
}
#define AO_HAVE_fetch_and_add1_release
AO_INLINE AO_t
AO_fetch_and_sub1_acquire (volatile AO_t *addr)
{
AO_t result;
__asm__ __volatile__ (AO_SWIZZLE
"fetchadd" AO_LEN ".acq %0=[%1],-1" :
"=r" (result) AO_OUT_ADDR: AO_IN_ADDR :"memory" );
return result;
}
#define AO_HAVE_fetch_and_sub1_acquire
AO_INLINE AO_t
AO_fetch_and_sub1_release (volatile AO_t *addr)
{
AO_t result;
__asm__ __volatile__ (AO_SWIZZLE
"fetchadd" AO_LEN ".rel %0=[%1],-1" :
"=r" (result) AO_OUT_ADDR: AO_IN_ADDR :"memory" );
return result;
}
#define AO_HAVE_fetch_and_sub1_release
#endif /* !AO_PREFER_GENERALIZED */
AO_INLINE AO_t
AO_fetch_compare_and_swap_acquire(volatile AO_t *addr, AO_t old, AO_t new_val)
{
AO_t fetched_val;
AO_MASK(old);
__asm__ __volatile__(AO_SWIZZLE
"mov ar.ccv=%[old] ;; cmpxchg" AO_LEN
".acq %0=[%1],%[new_val],ar.ccv"
: "=r" (fetched_val) AO_OUT_ADDR
: AO_IN_ADDR, [new_val]"r" (new_val), [old]"r" (old)
: "memory" );
return fetched_val;
}
#define AO_HAVE_fetch_compare_and_swap_acquire
AO_INLINE AO_t
AO_fetch_compare_and_swap_release(volatile AO_t *addr, AO_t old, AO_t new_val)
{
AO_t fetched_val;
AO_MASK(old);
__asm__ __volatile__(AO_SWIZZLE
"mov ar.ccv=%[old] ;; cmpxchg" AO_LEN
".rel %0=[%1],%[new_val],ar.ccv"
: "=r" (fetched_val) AO_OUT_ADDR
: AO_IN_ADDR, [new_val]"r" (new_val), [old]"r" (old)
: "memory" );
return fetched_val;
}
#define AO_HAVE_fetch_compare_and_swap_release
AO_INLINE unsigned char
AO_char_fetch_compare_and_swap_acquire(volatile unsigned char *addr,
unsigned char old, unsigned char new_val)
{
unsigned char fetched_val;
__asm__ __volatile__(AO_SWIZZLE
"mov ar.ccv=%[old] ;; cmpxchg1.acq %0=[%1],%[new_val],ar.ccv"
: "=r" (fetched_val) AO_OUT_ADDR
: AO_IN_ADDR, [new_val]"r" (new_val), [old]"r" ((AO_t)old)
: "memory" );
return fetched_val;
}
#define AO_HAVE_char_fetch_compare_and_swap_acquire
AO_INLINE unsigned char
AO_char_fetch_compare_and_swap_release(volatile unsigned char *addr,
unsigned char old, unsigned char new_val)
{
unsigned char fetched_val;
__asm__ __volatile__(AO_SWIZZLE
"mov ar.ccv=%[old] ;; cmpxchg1.rel %0=[%1],%[new_val],ar.ccv"
: "=r" (fetched_val) AO_OUT_ADDR
: AO_IN_ADDR, [new_val]"r" (new_val), [old]"r" ((AO_t)old)
: "memory" );
return fetched_val;
}
#define AO_HAVE_char_fetch_compare_and_swap_release
AO_INLINE unsigned short
AO_short_fetch_compare_and_swap_acquire(volatile unsigned short *addr,
unsigned short old, unsigned short new_val)
{
unsigned short fetched_val;
__asm__ __volatile__(AO_SWIZZLE
"mov ar.ccv=%[old] ;; cmpxchg2.acq %0=[%1],%[new_val],ar.ccv"
: "=r" (fetched_val) AO_OUT_ADDR
: AO_IN_ADDR, [new_val]"r" (new_val), [old]"r" ((AO_t)old)
: "memory" );
return fetched_val;
}
#define AO_HAVE_short_fetch_compare_and_swap_acquire
AO_INLINE unsigned short
AO_short_fetch_compare_and_swap_release(volatile unsigned short *addr,
unsigned short old, unsigned short new_val)
{
unsigned short fetched_val;
__asm__ __volatile__(AO_SWIZZLE
"mov ar.ccv=%[old] ;; cmpxchg2.rel %0=[%1],%[new_val],ar.ccv"
: "=r" (fetched_val) AO_OUT_ADDR
: AO_IN_ADDR, [new_val]"r" (new_val), [old]"r" ((AO_t)old)
: "memory" );
return fetched_val;
}
#define AO_HAVE_short_fetch_compare_and_swap_release
#ifdef _ILP32
# define AO_T_IS_INT
/* TODO: Add compare_double_and_swap_double for the _ILP32 case. */
#else
# ifndef AO_PREFER_GENERALIZED
AO_INLINE unsigned int
AO_int_fetch_and_add1_acquire(volatile unsigned int *addr)
{
unsigned int result;
__asm__ __volatile__("fetchadd4.acq %0=[%1],1"
: "=r" (result) : AO_IN_ADDR
: "memory" );
return result;
}
# define AO_HAVE_int_fetch_and_add1_acquire
AO_INLINE unsigned int
AO_int_fetch_and_add1_release(volatile unsigned int *addr)
{
unsigned int result;
__asm__ __volatile__("fetchadd4.rel %0=[%1],1"
: "=r" (result) : AO_IN_ADDR
: "memory" );
return result;
}
# define AO_HAVE_int_fetch_and_add1_release
AO_INLINE unsigned int
AO_int_fetch_and_sub1_acquire(volatile unsigned int *addr)
{
unsigned int result;
__asm__ __volatile__("fetchadd4.acq %0=[%1],-1"
: "=r" (result) : AO_IN_ADDR
: "memory" );
return result;
}
# define AO_HAVE_int_fetch_and_sub1_acquire
AO_INLINE unsigned int
AO_int_fetch_and_sub1_release(volatile unsigned int *addr)
{
unsigned int result;
__asm__ __volatile__("fetchadd4.rel %0=[%1],-1"
: "=r" (result) : AO_IN_ADDR
: "memory" );
return result;
}
# define AO_HAVE_int_fetch_and_sub1_release
# endif /* !AO_PREFER_GENERALIZED */
AO_INLINE unsigned int
AO_int_fetch_compare_and_swap_acquire(volatile unsigned int *addr,
unsigned int old, unsigned int new_val)
{
unsigned int fetched_val;
__asm__ __volatile__("mov ar.ccv=%3 ;; cmpxchg4.acq %0=[%1],%2,ar.ccv"
: "=r" (fetched_val)
: AO_IN_ADDR, "r" (new_val), "r" ((AO_t)old)
: "memory" );
return fetched_val;
}
# define AO_HAVE_int_fetch_compare_and_swap_acquire
AO_INLINE unsigned int
AO_int_fetch_compare_and_swap_release(volatile unsigned int *addr,
unsigned int old, unsigned int new_val)
{
unsigned int fetched_val;
__asm__ __volatile__("mov ar.ccv=%3 ;; cmpxchg4.rel %0=[%1],%2,ar.ccv"
: "=r" (fetched_val)
: AO_IN_ADDR, "r" (new_val), "r" ((AO_t)old)
: "memory" );
return fetched_val;
}
# define AO_HAVE_int_fetch_compare_and_swap_release
#endif /* !_ILP32 */
/* TODO: Add compare_and_swap_double as soon as there is widely */
/* available hardware that implements it. */
#undef AO_IN_ADDR
#undef AO_LEN
#undef AO_MASK
#undef AO_OUT_ADDR
#undef AO_SWIZZLE
Messung V0.5 in Prozent C=93 H=100 G=96
¤ Dauer der Verarbeitung: 0.5 Sekunden
¤
*© Formatika GbR, Deutschland