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/*
* Copyright 2009-2016 Samy Al Bahra.
* Copyright 2013-2016 Olivier Houchard.
* Copyright 2016 Alexey Kopytov.
* 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_AARCH64_LSE_H
#define CK_PR_AARCH64_LSE_H
#ifndef CK_PR_H
#error Do not include this file directly, use ck_pr.h
#endif
CK_CC_INLINE static bool
ck_pr_cas_64_2_value(uint64_t target[2], uint64_t compare[2], uint64_t set[2], uint64_t value[2])
{
uint64_t tmp1;
uint64_t tmp2;
register uint64_t x0 __asm__ ("x0") = compare[0];
register uint64_t x1 __asm__ ("x1") = compare[1];
register uint64_t x2 __asm__ ("x2") = set[0];
register uint64_t x3 __asm__ ("x3") = set[1];
__asm__ __volatile__("casp %0, %1, %4, %5, [%6];"
"eor %2, %0, %7;"
"eor %3, %1, %8;"
"orr %2, %2, %3;"
: "+&r" (x0), "+&r" (x1), "=&r" (tmp1), "=&r" (tmp2)
: "r" (x2), "r" (x3), "r" (target), "r" (compare[0]), "r" (compare[1])
: "memory");
value[0] = x0;
value[1] = x1;
return (!!tmp1);
}
CK_CC_INLINE static bool
ck_pr_cas_ptr_2_value(void *target, void *compare, void *set, void *value)
{
return (ck_pr_cas_64_2_value(CK_CPP_CAST(uint64_t *, target),
CK_CPP_CAST(uint64_t *, compare),
CK_CPP_CAST(uint64_t *, set),
CK_CPP_CAST(uint64_t *, value)));
}
CK_CC_INLINE static bool
ck_pr_cas_64_2(uint64_t target[2], uint64_t compare[2], uint64_t set[2])
{
register uint64_t x0 __asm__ ("x0") = compare[0];
register uint64_t x1 __asm__ ("x1") = compare[1];
register uint64_t x2 __asm__ ("x2") = set[0];
register uint64_t x3 __asm__ ("x3") = set[1];
__asm__ __volatile__("casp %0, %1, %2, %3, [%4];"
"eor %0, %0, %5;"
"eor %1, %1, %6;"
"orr %0, %0, %1;"
: "+&r" (x0), "+&r" (x1)
: "r" (x2), "r" (x3), "r" (target), "r" (compare[0]), "r" (compare[1])
: "memory");
return (!!x0);
}
CK_CC_INLINE static bool
ck_pr_cas_ptr_2(void *target, void *compare, void *set)
{
return (ck_pr_cas_64_2(CK_CPP_CAST(uint64_t *, target),
CK_CPP_CAST(uint64_t *, compare),
CK_CPP_CAST(uint64_t *, set)));
}
#define CK_PR_CAS(N, M, T, W, R) \
CK_CC_INLINE static bool \
ck_pr_cas_##N##_value(M *target, T compare, T set, M *value) \
{ \
*(T *)value = compare; \
__asm__ __volatile__( \
"cas" W " %" R "0, %" R "2, [%1];" \
: "+&r" (*(T *)value) \
: "r" (target), \
"r" (set) \
: "memory"); \
return (*(T *)value == compare); \
} \
CK_CC_INLINE static bool \
ck_pr_cas_##N(M *target, T compare, T set) \
{ \
T previous = compare; \
__asm__ __volatile__( \
"cas" W " %" R "0, %" R "2, [%1];" \
: "+&r" (previous) \
: "r" (target), \
"r" (set) \
: "memory"); \
return (previous == compare); \
}
CK_PR_CAS(ptr, void, void *, "", "")
#define CK_PR_CAS_S(N, M, W, R) CK_PR_CAS(N, M, M, W, R)
CK_PR_CAS_S(64, uint64_t, "", "")
#ifndef CK_PR_DISABLE_DOUBLE
CK_PR_CAS_S(double, double, "", "")
#endif
CK_PR_CAS_S(32, uint32_t, "", "w")
CK_PR_CAS_S(uint, unsigned int, "", "w")
CK_PR_CAS_S(int, int, "", "w")
CK_PR_CAS_S(16, uint16_t, "h", "w")
CK_PR_CAS_S(8, uint8_t, "b", "w")
CK_PR_CAS_S(short, short, "h", "w")
CK_PR_CAS_S(char, char, "b", "w")
#undef CK_PR_CAS_S
#undef CK_PR_CAS
#define CK_PR_FAS(N, M, T, W, R) \
CK_CC_INLINE static T \
ck_pr_fas_##N(M *target, T v) \
{ \
T previous; \
__asm__ __volatile__( \
"swp" W " %" R "2, %" R "0, [%1];" \
: "=&r" (previous) \
: "r" (target), \
"r" (v) \
: "memory"); \
return (previous); \
}
CK_PR_FAS(64, uint64_t, uint64_t, "", "")
CK_PR_FAS(32, uint32_t, uint32_t, "", "w")
CK_PR_FAS(ptr, void, void *, "", "")
CK_PR_FAS(int, int, int, "", "w")
CK_PR_FAS(uint, unsigned int, unsigned int, "", "w")
CK_PR_FAS(16, uint16_t, uint16_t, "h", "w")
CK_PR_FAS(8, uint8_t, uint8_t, "b", "w")
CK_PR_FAS(short, short, short, "h", "w")
CK_PR_FAS(char, char, char, "b", "w")
#undef CK_PR_FAS
#define CK_PR_UNARY(O, N, M, T, I, W, R, S) \
CK_CC_INLINE static void \
ck_pr_##O##_##N(M *target) \
{ \
__asm__ __volatile__(I ";" \
"st" S W " " R "0, [%0];" \
: \
: "r" (target) \
: "x0", "memory"); \
return; \
}
CK_PR_UNARY(inc, ptr, void, void *, "mov x0, 1", "", "x", "add")
CK_PR_UNARY(dec, ptr, void, void *, "mov x0, -1", "", "x", "add")
CK_PR_UNARY(not, ptr, void, void *, "mov x0, -1", "", "x", "eor")
CK_PR_UNARY(inc, 64, uint64_t, uint64_t, "mov x0, 1", "", "x", "add")
CK_PR_UNARY(dec, 64, uint64_t, uint64_t, "mov x0, -1", "", "x", "add")
CK_PR_UNARY(not, 64, uint64_t, uint64_t, "mov x0, -1", "", "x", "eor")
#define CK_PR_UNARY_S(S, T, W) \
CK_PR_UNARY(inc, S, T, T, "mov w0, 1", W, "w", "add") \
CK_PR_UNARY(dec, S, T, T, "mov w0, -1", W, "w", "add") \
CK_PR_UNARY(not, S, T, T, "mov w0, -1", W, "w", "eor") \
CK_PR_UNARY_S(32, uint32_t, "")
CK_PR_UNARY_S(uint, unsigned int, "")
CK_PR_UNARY_S(int, int, "")
CK_PR_UNARY_S(16, uint16_t, "h")
CK_PR_UNARY_S(8, uint8_t, "b")
CK_PR_UNARY_S(short, short, "h")
CK_PR_UNARY_S(char, char, "b")
#undef CK_PR_UNARY_S
#undef CK_PR_UNARY
#define CK_PR_BINARY(O, N, M, T, S, W, R, I) \
CK_CC_INLINE static void \
ck_pr_##O##_##N(M *target, T delta) \
{ \
__asm__ __volatile__(I ";" \
"st" S W " %" R "0, [%1];" \
: "+&r" (delta) \
: "r" (target) \
: "memory"); \
return; \
}
CK_PR_BINARY(and, ptr, void, uintptr_t, "clr", "", "", "mvn %0, %0")
CK_PR_BINARY(add, ptr, void, uintptr_t, "add", "", "", "")
CK_PR_BINARY(or, ptr, void, uintptr_t, "set", "", "", "")
CK_PR_BINARY(sub, ptr, void, uintptr_t, "add", "", "", "neg %0, %0")
CK_PR_BINARY(xor, ptr, void, uintptr_t, "eor", "", "", "")
CK_PR_BINARY(and, 64, uint64_t, uint64_t, "clr", "", "", "mvn %0, %0")
CK_PR_BINARY(add, 64, uint64_t, uint64_t, "add", "", "", "")
CK_PR_BINARY(or, 64, uint64_t, uint64_t, "set", "", "", "")
CK_PR_BINARY(sub, 64, uint64_t, uint64_t, "add", "", "", "neg %0, %0")
CK_PR_BINARY(xor, 64, uint64_t, uint64_t, "eor", "", "", "")
#define CK_PR_BINARY_S(S, T, W) \
CK_PR_BINARY(and, S, T, T, "clr", W, "w", "mvn %w0, %w0") \
CK_PR_BINARY(add, S, T, T, "add", W, "w", "") \
CK_PR_BINARY(or, S, T, T, "set", W, "w", "") \
CK_PR_BINARY(sub, S, T, T, "add", W, "w", "neg %w0, %w0") \
CK_PR_BINARY(xor, S, T, T, "eor", W, "w", "")
CK_PR_BINARY_S(32, uint32_t, "")
CK_PR_BINARY_S(uint, unsigned int, "")
CK_PR_BINARY_S(int, int, "")
CK_PR_BINARY_S(16, uint16_t, "h")
CK_PR_BINARY_S(8, uint8_t, "b")
CK_PR_BINARY_S(short, short, "h")
CK_PR_BINARY_S(char, char, "b")
#undef CK_PR_BINARY_S
#undef CK_PR_BINARY
CK_CC_INLINE static void *
ck_pr_faa_ptr(void *target, uintptr_t delta)
{
uintptr_t previous;
__asm__ __volatile__(
"ldadd %2, %0, [%1];"
: "=r" (previous)
: "r" (target),
"r" (delta)
: "memory");
return (void *)(previous);
}
CK_CC_INLINE static uint64_t
ck_pr_faa_64(uint64_t *target, uint64_t delta)
{
uint64_t previous;
__asm__ __volatile__(
"ldadd %2, %0, [%1];"
: "=r" (previous)
: "r" (target),
"r" (delta)
: "memory");
return (previous);
}
#define CK_PR_FAA(S, T, W) \
CK_CC_INLINE static T \
ck_pr_faa_##S(T *target, T delta) \
{ \
T previous; \
__asm__ __volatile__( \
"ldadd" W " %w2, %w0, [%1];" \
: "=r" (previous) \
: "r" (target), \
"r" (delta) \
: "memory"); \
return (previous); \
}
CK_PR_FAA(32, uint32_t, "")
CK_PR_FAA(uint, unsigned int, "")
CK_PR_FAA(int, int, "")
CK_PR_FAA(16, uint16_t, "h")
CK_PR_FAA(8, uint8_t, "b")
CK_PR_FAA(short, short, "h")
CK_PR_FAA(char, char, "b")
#undef CK_PR_FAA
#endif /* CK_PR_AARCH64_LSE_H */
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