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diff --git a/include/gcc/s390x/ck_pr.h b/include/gcc/s390x/ck_pr.h
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+/*
+ * Copyright 2009-2015 Samy Al Bahra.
+ * Copyright 2017 Neale Ferguson
+ * 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_S390X_H
+#define CK_PR_S390X_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
+
+/*
+ * This bounces the hardware thread from low to medium
+ * priority. I am unsure of the benefits of this approach
+ * but it is used by the Linux kernel.
+ */
+CK_CC_INLINE static void
+ck_pr_stall(void)
+{
+ __sync_synchronize();
+ return;
+}
+
+#define CK_PR_FENCE(T) \
+ CK_CC_INLINE static void \
+ ck_pr_fence_strict_##T(void) \
+ { \
+ __sync_synchronize(); \
+ }
+
+/*
+ * These are derived from:
+ * http://www.ibm.com/developerworks/systems/articles/powerpc.html
+ */
+CK_PR_FENCE(atomic)
+CK_PR_FENCE(atomic_store)
+CK_PR_FENCE(atomic_load)
+CK_PR_FENCE(store_atomic)
+CK_PR_FENCE(load_atomic)
+CK_PR_FENCE(store)
+CK_PR_FENCE(store_load)
+CK_PR_FENCE(load)
+CK_PR_FENCE(load_store)
+CK_PR_FENCE(memory)
+CK_PR_FENCE(acquire)
+CK_PR_FENCE(release)
+CK_PR_FENCE(acqrel)
+CK_PR_FENCE(lock)
+CK_PR_FENCE(unlock)
+
+#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 "\t%0, %1\n" \
+ : "=r" (r) \
+ : "Q" (*(const C *)target) \
+ : "memory"); \
+ return (r); \
+ }
+
+CK_PR_LOAD(ptr, void, void *, uint64_t, "lg")
+
+#define CK_PR_LOAD_S(S, T, I) CK_PR_LOAD(S, T, T, T, I)
+
+CK_PR_LOAD_S(64, uint64_t, "lg")
+CK_PR_LOAD_S(32, uint32_t, "llgf")
+CK_PR_LOAD_S(16, uint16_t, "llgh")
+CK_PR_LOAD_S(8, uint8_t, "llgc")
+CK_PR_LOAD_S(uint, unsigned int, "llgf")
+CK_PR_LOAD_S(int, int, "llgf")
+CK_PR_LOAD_S(short, short, "lgh")
+CK_PR_LOAD_S(char, char, "lgb")
+#ifndef CK_PR_DISABLE_DOUBLE
+CK_CC_INLINE static double
+ck_pr_md_load_double(const double *target)
+{
+ double r;
+ __asm__ __volatile__("ld %0, %1\n"
+ : "=f" (r)
+ : "Q" (*(const double *)target)
+ : "memory");
+ return (r);
+}
+#endif
+
+#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 "\t%1, %0\n" \
+ : "=Q" (*(C *)target) \
+ : "r" (v) \
+ : "memory"); \
+ return; \
+ }
+
+CK_PR_STORE(ptr, void, const void *, uint64_t, "stg")
+
+#define CK_PR_STORE_S(S, T, I) CK_PR_STORE(S, T, T, T, I)
+
+CK_PR_STORE_S(64, uint64_t, "stg")
+CK_PR_STORE_S(32, uint32_t, "st")
+CK_PR_STORE_S(16, uint16_t, "sth")
+CK_PR_STORE_S(8, uint8_t, "stc")
+CK_PR_STORE_S(uint, unsigned int, "st")
+CK_PR_STORE_S(int, int, "st")
+CK_PR_STORE_S(short, short, "sth")
+CK_PR_STORE_S(char, char, "stc")
+#ifndef CK_PR_DISABLE_DOUBLE
+CK_CC_INLINE static void
+ck_pr_md_store_double(double *target, double v)
+{
+ __asm__ __volatile__(" std %1, %0\n"
+ : "=Q" (*(double *)target)
+ : "f" (v)
+ : "0", "memory");
+}
+#endif
+
+#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)
+{
+ *value = __sync_val_compare_and_swap(target,compare,set);
+ return (*value == compare);
+}
+
+CK_CC_INLINE static bool
+ck_pr_cas_ptr_value(void *target, void *compare, void *set, void *value)
+{
+ uintptr_t previous;
+
+ previous = __sync_val_compare_and_swap((uintptr_t *) target,
+ (uintptr_t) compare,
+ (uintptr_t) set);
+ *((uintptr_t *) value) = previous;
+ return (previous == (uintptr_t) compare);
+}
+
+CK_CC_INLINE static bool
+ck_pr_cas_64(uint64_t *target, uint64_t compare, uint64_t set)
+{
+ return(__sync_bool_compare_and_swap(target,compare,set));
+}
+
+CK_CC_INLINE static bool
+ck_pr_cas_ptr(void *target, void *compare, void *set)
+{
+ return(__sync_bool_compare_and_swap((uintptr_t *) target,
+ (uintptr_t) compare,
+ (uintptr_t) set));
+}
+
+#define CK_PR_CAS(N, T) \
+ CK_CC_INLINE static bool \
+ ck_pr_cas_##N##_value(T *target, T compare, T set, T *value) \
+ { \
+ *value = __sync_val_compare_and_swap(target, \
+ compare, \
+ set); \
+ return(*value == compare); \
+ } \
+ CK_CC_INLINE static bool \
+ ck_pr_cas_##N(T *target, T compare, T set) \
+ { \
+ return(__sync_bool_compare_and_swap(target, \
+ compare, \
+ set)); \
+ }
+
+CK_PR_CAS(32, uint32_t)
+CK_PR_CAS(uint, unsigned int)
+CK_PR_CAS(int, int)
+
+#undef CK_PR_CAS
+
+CK_CC_INLINE static void *
+ck_pr_fas_ptr(void *target, void *v)
+{
+ return((void *)__atomic_exchange_n((uintptr_t *) target, (uintptr_t) v, __ATOMIC_ACQUIRE));
+}
+
+#define CK_PR_FAS(N, M, T) \
+ CK_CC_INLINE static T \
+ ck_pr_fas_##N(M *target, T v) \
+ { \
+ return(__atomic_exchange_n(target, v, __ATOMIC_ACQUIRE)); \
+ }
+
+CK_PR_FAS(64, uint64_t, uint64_t)
+CK_PR_FAS(32, uint32_t, uint32_t)
+CK_PR_FAS(int, int, int)
+CK_PR_FAS(uint, unsigned int, unsigned int)
+
+#ifndef CK_PR_DISABLE_DOUBLE
+CK_CC_INLINE static double
+ck_pr_fas_double(double *target, double *v)
+{
+ double previous;
+
+ __asm__ __volatile__ (" lg 1,%2\n"
+ "0: lg 0,%1\n"
+ " csg 0,1,%1\n"
+ " jnz 0b\n"
+ " ldgr %0,0\n"
+ : "=f" (previous)
+ : "Q" (target), "Q" (v)
+ : "0", "1", "cc", "memory");
+ return (previous);
+}
+#endif
+
+#undef CK_PR_FAS
+
+/*
+ * Atomic store-only binary operations.
+ */
+#define CK_PR_BINARY(K, S, M, T) \
+ CK_CC_INLINE static void \
+ ck_pr_##K##_##S(M *target, T d) \
+ { \
+ d = __sync_fetch_and_##K((T *)target, d); \
+ return; \
+ }
+
+#define CK_PR_BINARY_S(K, S, T) CK_PR_BINARY(K, S, T, T)
+
+#define CK_PR_GENERATE(K) \
+ CK_PR_BINARY(K, ptr, void, void *) \
+ CK_PR_BINARY_S(K, char, char) \
+ CK_PR_BINARY_S(K, int, int) \
+ CK_PR_BINARY_S(K, uint, unsigned int) \
+ CK_PR_BINARY_S(K, 64, uint64_t) \
+ CK_PR_BINARY_S(K, 32, uint32_t) \
+ CK_PR_BINARY_S(K, 16, uint16_t) \
+ CK_PR_BINARY_S(K, 8, uint8_t)
+
+CK_PR_GENERATE(add)
+CK_PR_GENERATE(sub)
+CK_PR_GENERATE(and)
+CK_PR_GENERATE(or)
+CK_PR_GENERATE(xor)
+
+#undef CK_PR_GENERATE
+#undef CK_PR_BINARY_S
+#undef CK_PR_BINARY
+
+#define CK_PR_UNARY(S, M, T) \
+ CK_CC_INLINE static void \
+ ck_pr_inc_##S(M *target) \
+ { \
+ ck_pr_add_##S(target, (T)1); \
+ return; \
+ } \
+ CK_CC_INLINE static void \
+ ck_pr_dec_##S(M *target) \
+ { \
+ ck_pr_sub_##S(target, (T)1); \
+ return; \
+ }
+
+#define CK_PR_UNARY_X(S, M) \
+ CK_CC_INLINE static void \
+ ck_pr_not_##S(M *target) \
+ { \
+ M newval; \
+ do { \
+ newval = ~(*target); \
+ } while (!__sync_bool_compare_and_swap(target, \
+ *target, \
+ newval)); \
+ } \
+ CK_CC_INLINE static void \
+ ck_pr_neg_##S(M *target) \
+ { \
+ M newval; \
+ do { \
+ newval = -(*target); \
+ } while (!__sync_bool_compare_and_swap(target, \
+ *target, \
+ newval)); \
+ }
+
+#define CK_PR_UNARY_S(S, M) CK_PR_UNARY(S, M, M) \
+ CK_PR_UNARY_X(S, M)
+
+CK_PR_UNARY(ptr, void, void *)
+CK_PR_UNARY_S(char, char)
+CK_PR_UNARY_S(int, int)
+CK_PR_UNARY_S(uint, unsigned int)
+CK_PR_UNARY_S(64, uint64_t)
+CK_PR_UNARY_S(32, uint32_t)
+CK_PR_UNARY_S(16, uint16_t)
+CK_PR_UNARY_S(8, uint8_t)
+
+#undef CK_PR_UNARY_S
+#undef CK_PR_UNARY
+
+CK_CC_INLINE static void *
+ck_pr_faa_ptr(void *target, uintptr_t delta)
+{
+ uintptr_t previous;
+
+ previous = __sync_fetch_and_add((uintptr_t *) target, delta);
+
+ return (void *)(previous);
+}
+
+#define CK_PR_FAA(S, T) \
+ CK_CC_INLINE static T \
+ ck_pr_faa_##S(T *target, T delta) \
+ { \
+ T previous; \
+ \
+ previous = __sync_fetch_and_add(target, delta); \
+ \
+ return (previous); \
+ }
+
+CK_PR_FAA(64, uint64_t)
+CK_PR_FAA(32, uint32_t)
+CK_PR_FAA(uint, unsigned int)
+CK_PR_FAA(int, int)
+
+#undef CK_PR_FAA
+
+#endif /* CK_PR_S390X_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 09:29:01 +0000