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/*
* Copyright 2009, 2010 Samy Al Bahra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef CK_PR_SPARCV9_H
#define CK_PR_SPARCV9_H
#ifndef CK_PR_H
#error Do not include this file directly, use ck_pr.h
#endif
#include <ck_cc.h>
#include <ck_md.h>
/*
* The following represent supported atomic operations.
* These operations may be emulated.
*/
#include "ck_f_pr.h"
/*
* Minimum interface requirement met.
*/
#define CK_F_PR
/*
* Order loads at the least.
*/
CK_CC_INLINE static void
ck_pr_stall(void)
{
__asm__ __volatile__("membar #LoadLoad" ::: "memory");
return;
}
#define CK_PR_FENCE(T, I) \
CK_CC_INLINE static void \
ck_pr_fence_strict_##T(void) \
{ \
__asm__ __volatile__(I ::: "memory"); \
}
/*
* Atomic operations are treated as both load and store
* operations on SPARCv9.
*/
CK_PR_FENCE(atomic, "membar #StoreStore")
CK_PR_FENCE(atomic_store, "membar #StoreStore")
CK_PR_FENCE(atomic_load, "membar #StoreLoad")
CK_PR_FENCE(store_atomic, "membar #StoreStore")
CK_PR_FENCE(load_atomic, "membar #LoadStore")
CK_PR_FENCE(store, "membar #StoreStore")
CK_PR_FENCE(store_load, "membar #StoreLoad")
CK_PR_FENCE(load, "membar #LoadLoad")
CK_PR_FENCE(load_store, "membar #LoadStore")
CK_PR_FENCE(memory, "membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad")
CK_PR_FENCE(acquire, "membar #LoadLoad | #LoadStore")
CK_PR_FENCE(release, "membar #LoadStore | #StoreStore")
CK_PR_FENCE(acqrel, "membar #LoadLoad | #LoadStore | #StoreStore")
CK_PR_FENCE(lock, "membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad")
CK_PR_FENCE(unlock, "membar #LoadStore | #StoreStore")
#undef CK_PR_FENCE
#define CK_PR_LOAD(S, M, T, C, I) \
CK_CC_INLINE static T \
ck_pr_md_load_##S(const M *target) \
{ \
T r; \
__asm__ __volatile__(I " [%1], %0" \
: "=&r" (r) \
: "r" (target) \
: "memory"); \
return (r); \
}
CK_PR_LOAD(ptr, void, void *, uint64_t, "ldx")
#define CK_PR_LOAD_S(S, T, I) CK_PR_LOAD(S, T, T, T, I)
CK_PR_LOAD_S(64, uint64_t, "ldx")
CK_PR_LOAD_S(32, uint32_t, "lduw")
CK_PR_LOAD_S(uint, unsigned int, "lduw")
CK_PR_LOAD_S(double, double, "ldx")
CK_PR_LOAD_S(int, int, "ldsw")
#undef CK_PR_LOAD_S
#undef CK_PR_LOAD
#define CK_PR_STORE(S, M, T, C, I) \
CK_CC_INLINE static void \
ck_pr_md_store_##S(M *target, T v) \
{ \
__asm__ __volatile__(I " %0, [%1]" \
: \
: "r" (v), \
"r" (target) \
: "memory"); \
return; \
}
CK_PR_STORE(ptr, void, const void *, uint64_t, "stx")
#define CK_PR_STORE_S(S, T, I) CK_PR_STORE(S, T, T, T, I)
CK_PR_STORE_S(8, uint8_t, "stub")
CK_PR_STORE_S(64, uint64_t, "stx")
CK_PR_STORE_S(32, uint32_t, "stuw")
CK_PR_STORE_S(uint, unsigned int, "stuw")
CK_PR_STORE_S(double, double, "stx")
CK_PR_STORE_S(int, int, "stsw")
#undef CK_PR_STORE_S
#undef CK_PR_STORE
CK_CC_INLINE static bool
ck_pr_cas_64_value(uint64_t *target, uint64_t compare, uint64_t set, uint64_t *value)
{
__asm__ __volatile__("casx [%1], %2, %0"
: "+&r" (set)
: "r" (target),
"r" (compare)
: "memory");
*value = set;
return (compare == set);
}
CK_CC_INLINE static bool
ck_pr_cas_64(uint64_t *target, uint64_t compare, uint64_t set)
{
__asm__ __volatile__("casx [%1], %2, %0"
: "+&r" (set)
: "r" (target),
"r" (compare)
: "memory");
return (compare == set);
}
CK_CC_INLINE static bool
ck_pr_cas_ptr(void *target, void *compare, void *set)
{
return ck_pr_cas_64(target, (uint64_t)compare, (uint64_t)set);
}
CK_CC_INLINE static bool
ck_pr_cas_ptr_value(void *target, void *compare, void *set, void *previous)
{
return ck_pr_cas_64_value(target, (uint64_t)compare, (uint64_t)set, previous);
}
#define CK_PR_CAS(N, T) \
CK_CC_INLINE static bool \
ck_pr_cas_##N##_value(T *target, T compare, T set, T *value) \
{ \
__asm__ __volatile__("cas [%1], %2, %0" \
: "+&r" (set) \
: "r" (target), \
"r" (compare) \
: "memory"); \
*value = set; \
return (compare == set); \
} \
CK_CC_INLINE static bool \
ck_pr_cas_##N(T *target, T compare, T set) \
{ \
__asm__ __volatile__("cas [%1], %2, %0" \
: "+&r" (set) \
: "r" (target), \
"r" (compare) \
: "memory"); \
return (compare == set); \
}
CK_PR_CAS(32, uint32_t)
CK_PR_CAS(uint, unsigned int)
CK_PR_CAS(int, int)
#undef CK_PR_CAS
#define CK_PR_FAS(N, T) \
CK_CC_INLINE static T \
ck_pr_fas_##N(T *target, T update) \
{ \
\
__asm__ __volatile__("swap [%1], %0" \
: "+&r" (update) \
: "r" (target) \
: "memory"); \
return (update); \
}
CK_PR_FAS(int, int)
CK_PR_FAS(uint, unsigned int)
CK_PR_FAS(32, uint32_t)
#undef CK_PR_FAS
#endif /* CK_PR_SPARCV9_H */
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