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-rw-r--r--freebsd/sys/contrib/ck/include/gcc/arm/ck_pr.h563
1 files changed, 563 insertions, 0 deletions
diff --git a/freebsd/sys/contrib/ck/include/gcc/arm/ck_pr.h b/freebsd/sys/contrib/ck/include/gcc/arm/ck_pr.h
new file mode 100644
index 00000000..b1f36997
--- /dev/null
+++ b/freebsd/sys/contrib/ck/include/gcc/arm/ck_pr.h
@@ -0,0 +1,563 @@
+/*
+ * Copyright 2009-2015 Samy Al Bahra.
+ * Copyright 2013-2015 Olivier Houchard.
+ * 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_ARM_H
+#define CK_PR_ARM_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
+
+CK_CC_INLINE static void
+ck_pr_stall(void)
+{
+
+ __asm__ __volatile__("" ::: "memory");
+ return;
+}
+
+#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__)
+#define CK_ISB __asm __volatile("isb" : : "r" (0) : "memory")
+#define CK_DMB __asm __volatile("dmb" : : "r" (0) : "memory")
+#define CK_DSB __asm __volatile("dsb" : : "r" (0) : "memory")
+/* FreeBSD's toolchain doesn't accept dmb st, so use the opcode instead */
+#if defined(__FreeBSD__) && !defined(__rtems__)
+#define CK_DMB_ST __asm __volatile(".word 0xf57ff05e" : : "r" (0) : "memory")
+#else
+#define CK_DMB_ST __asm __volatile("dmb st" : : "r" (0) : "memory")
+#endif /* __FreeBSD__ */
+#else
+/* armv6 doesn't have dsb/dmb/isb, and no way to wait only for stores */
+#define CK_ISB \
+ __asm __volatile("mcr p15, 0, %0, c7, c5, 4" : : "r" (0) : "memory")
+#define CK_DSB \
+ __asm __volatile("mcr p15, 0, %0, c7, c10, 4" : : "r" (0) : "memory")
+#define CK_DMB \
+ __asm __volatile("mcr p15, 0, %0, c7, c10, 5" : : "r" (0) : "memory")
+#define CK_DMB_ST CK_DMB
+#endif
+
+#define CK_PR_FENCE(T, I) \
+ CK_CC_INLINE static void \
+ ck_pr_fence_strict_##T(void) \
+ { \
+ I; \
+ }
+
+CK_PR_FENCE(atomic, CK_DMB_ST)
+CK_PR_FENCE(atomic_store, CK_DMB_ST)
+CK_PR_FENCE(atomic_load, CK_DMB_ST)
+CK_PR_FENCE(store_atomic, CK_DMB_ST)
+CK_PR_FENCE(load_atomic, CK_DMB)
+CK_PR_FENCE(store, CK_DMB_ST)
+CK_PR_FENCE(store_load, CK_DMB)
+CK_PR_FENCE(load, CK_DMB)
+CK_PR_FENCE(load_store, CK_DMB)
+CK_PR_FENCE(memory, CK_DMB)
+CK_PR_FENCE(acquire, CK_DMB)
+CK_PR_FENCE(release, CK_DMB)
+CK_PR_FENCE(acqrel, CK_DMB)
+CK_PR_FENCE(lock, CK_DMB)
+CK_PR_FENCE(unlock, CK_DMB)
+
+#undef CK_PR_FENCE
+
+#undef CK_ISB
+#undef CK_DSB
+#undef CK_DMB
+#undef CK_DMB_ST
+
+#define CK_PR_LOAD(S, M, T, C, I) \
+ CK_CC_INLINE static T \
+ ck_pr_md_load_##S(const M *target) \
+ { \
+ long r = 0; \
+ __asm__ __volatile__(I " %0, [%1];" \
+ : "=r" (r) \
+ : "r" (target) \
+ : "memory"); \
+ return ((T)r); \
+ }
+
+CK_PR_LOAD(ptr, void, void *, uint32_t, "ldr")
+
+#define CK_PR_LOAD_S(S, T, I) CK_PR_LOAD(S, T, T, T, I)
+
+CK_PR_LOAD_S(32, uint32_t, "ldr")
+CK_PR_LOAD_S(16, uint16_t, "ldrh")
+CK_PR_LOAD_S(8, uint8_t, "ldrb")
+CK_PR_LOAD_S(uint, unsigned int, "ldr")
+CK_PR_LOAD_S(int, int, "ldr")
+CK_PR_LOAD_S(short, short, "ldrh")
+CK_PR_LOAD_S(char, char, "ldrb")
+
+#undef CK_PR_LOAD_S
+#undef CK_PR_LOAD
+
+#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__)
+
+#define CK_PR_DOUBLE_LOAD(T, N) \
+CK_CC_INLINE static T \
+ck_pr_md_load_##N(const T *target) \
+{ \
+ register T ret; \
+ \
+ __asm __volatile("ldrexd %0, [%1]" \
+ : "=&r" (ret) \
+ : "r" (target) \
+ : "memory", "cc"); \
+ return (ret); \
+}
+
+CK_PR_DOUBLE_LOAD(uint64_t, 64)
+#ifndef CK_PR_DISABLE_DOUBLE
+CK_PR_DOUBLE_LOAD(double, double)
+#endif
+#undef CK_PR_DOUBLE_LOAD
+#endif
+
+#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 " %1, [%0]" \
+ : \
+ : "r" (target), \
+ "r" (v) \
+ : "memory"); \
+ return; \
+ }
+
+CK_PR_STORE(ptr, void, const void *, uint32_t, "str")
+
+#define CK_PR_STORE_S(S, T, I) CK_PR_STORE(S, T, T, T, I)
+
+CK_PR_STORE_S(32, uint32_t, "str")
+CK_PR_STORE_S(16, uint16_t, "strh")
+CK_PR_STORE_S(8, uint8_t, "strb")
+CK_PR_STORE_S(uint, unsigned int, "str")
+CK_PR_STORE_S(int, int, "str")
+CK_PR_STORE_S(short, short, "strh")
+CK_PR_STORE_S(char, char, "strb")
+
+#undef CK_PR_STORE_S
+#undef CK_PR_STORE
+
+#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__)
+
+#define CK_PR_DOUBLE_STORE(T, N) \
+CK_CC_INLINE static void \
+ck_pr_md_store_##N(const T *target, T value) \
+{ \
+ T tmp; \
+ uint32_t flag; \
+ __asm __volatile("1: \n" \
+ "ldrexd %0, [%2]\n" \
+ "strexd %1, %3, [%2]\n" \
+ "teq %1, #0\n" \
+ "it ne \n" \
+ "bne 1b\n" \
+ : "=&r" (tmp), "=&r" (flag) \
+ : "r" (target), "r" (value) \
+ : "memory", "cc"); \
+}
+
+CK_PR_DOUBLE_STORE(uint64_t, 64)
+#ifndef CK_PR_DISABLE_DOUBLE
+CK_PR_DOUBLE_STORE(double, double)
+#endif
+
+#undef CK_PR_DOUBLE_STORE
+
+#define CK_PR_DOUBLE_CAS_VALUE(T, N) \
+CK_CC_INLINE static bool \
+ck_pr_cas_##N##_value(T *target, T compare, T set, T *value) \
+{ \
+ T previous; \
+ int tmp; \
+ \
+ __asm__ __volatile__("1:" \
+ "ldrexd %0, [%4];" \
+ "cmp %Q0, %Q2;" \
+ "ittt eq;" \
+ "cmpeq %R0, %R2;" \
+ "strexdeq %1, %3, [%4];" \
+ "cmpeq %1, #1;" \
+ "beq 1b;" \
+ :"=&r" (previous), "=&r" (tmp) \
+ : "r" (compare), "r" (set) , \
+ "r"(target) \
+ : "memory", "cc"); \
+ *value = previous; \
+ return (*value == compare); \
+}
+
+CK_PR_DOUBLE_CAS_VALUE(uint64_t, 64)
+#ifndef CK_PR_DISABLE_DOUBLE
+CK_PR_DOUBLE_CAS_VALUE(double, double)
+#endif
+
+#undef CK_PR_DOUBLE_CAS_VALUE
+
+CK_CC_INLINE static bool
+ck_pr_cas_ptr_2_value(void *target, void *compare, void *set, void *value)
+{
+ uint32_t *_compare = CK_CPP_CAST(uint32_t *, compare);
+ uint32_t *_set = CK_CPP_CAST(uint32_t *, set);
+ uint64_t __compare = ((uint64_t)_compare[0]) | ((uint64_t)_compare[1] << 32);
+ uint64_t __set = ((uint64_t)_set[0]) | ((uint64_t)_set[1] << 32);
+
+ return (ck_pr_cas_64_value(CK_CPP_CAST(uint64_t *, target),
+ __compare,
+ __set,
+ CK_CPP_CAST(uint64_t *, value)));
+}
+
+#define CK_PR_DOUBLE_CAS(T, N) \
+CK_CC_INLINE static bool \
+ck_pr_cas_##N(T *target, T compare, T set) \
+{ \
+ int ret; \
+ T tmp; \
+ \
+ __asm__ __volatile__("1:" \
+ "mov %0, #0;" \
+ "ldrexd %1, [%4];" \
+ "cmp %Q1, %Q2;" \
+ "itttt eq;" \
+ "cmpeq %R1, %R2;" \
+ "strexdeq %1, %3, [%4];" \
+ "moveq %0, #1;" \
+ "cmpeq %1, #1;" \
+ "beq 1b;" \
+ : "=&r" (ret), "=&r" (tmp) \
+ : "r" (compare), "r" (set) , \
+ "r"(target) \
+ : "memory", "cc"); \
+ \
+ return (ret); \
+}
+
+CK_PR_DOUBLE_CAS(uint64_t, 64)
+#ifndef CK_PR_DISABLE_DOUBLE
+CK_PR_DOUBLE_CAS(double, double)
+#endif
+
+CK_CC_INLINE static bool
+ck_pr_cas_ptr_2(void *target, void *compare, void *set)
+{
+ uint32_t *_compare = CK_CPP_CAST(uint32_t *, compare);
+ uint32_t *_set = CK_CPP_CAST(uint32_t *, set);
+ uint64_t __compare = ((uint64_t)_compare[0]) | ((uint64_t)_compare[1] << 32);
+ uint64_t __set = ((uint64_t)_set[0]) | ((uint64_t)_set[1] << 32);
+ return (ck_pr_cas_64(CK_CPP_CAST(uint64_t *, target),
+ __compare,
+ __set));
+}
+
+#endif
+
+CK_CC_INLINE static bool
+ck_pr_cas_ptr_value(void *target, void *compare, void *set, void *value)
+{
+ void *previous, *tmp;
+ __asm__ __volatile__("1:"
+ "ldrex %0, [%2];"
+ "cmp %0, %4;"
+ "itt eq;"
+ "strexeq %1, %3, [%2];"
+ "cmpeq %1, #1;"
+ "beq 1b;"
+ : "=&r" (previous),
+ "=&r" (tmp)
+ : "r" (target),
+ "r" (set),
+ "r" (compare)
+ : "memory", "cc");
+ *(void **)value = previous;
+ return (previous == compare);
+}
+
+CK_CC_INLINE static bool
+ck_pr_cas_ptr(void *target, void *compare, void *set)
+{
+ void *previous, *tmp;
+ __asm__ __volatile__("1:"
+ "ldrex %0, [%2];"
+ "cmp %0, %4;"
+ "itt eq;"
+ "strexeq %1, %3, [%2];"
+ "cmpeq %1, #1;"
+ "beq 1b;"
+ : "=&r" (previous),
+ "=&r" (tmp)
+ : "r" (target),
+ "r" (set),
+ "r" (compare)
+ : "memory", "cc");
+ return (previous == compare);
+}
+
+#define CK_PR_CAS(N, T, W) \
+ CK_CC_INLINE static bool \
+ ck_pr_cas_##N##_value(T *target, T compare, T set, T *value) \
+ { \
+ T previous = 0, tmp = 0; \
+ __asm__ __volatile__("1:" \
+ "ldrex" W " %0, [%2];" \
+ "cmp %0, %4;" \
+ "itt eq;" \
+ "strex" W "eq %1, %3, [%2];" \
+ "cmpeq %1, #1;" \
+ "beq 1b;" \
+ /* \
+ * Using "+&" instead of "=&" to avoid bogus \
+ * clang warnings. \
+ */ \
+ : "+&r" (previous), \
+ "+&r" (tmp) \
+ : "r" (target), \
+ "r" (set), \
+ "r" (compare) \
+ : "memory", "cc"); \
+ *value = previous; \
+ return (previous == compare); \
+ } \
+ CK_CC_INLINE static bool \
+ ck_pr_cas_##N(T *target, T compare, T set) \
+ { \
+ T previous = 0, tmp = 0; \
+ __asm__ __volatile__("1:" \
+ "ldrex" W " %0, [%2];" \
+ "cmp %0, %4;" \
+ "itt eq;" \
+ "strex" W "eq %1, %3, [%2];" \
+ "cmpeq %1, #1;" \
+ "beq 1b;" \
+ : "+&r" (previous), \
+ "+&r" (tmp) \
+ : "r" (target), \
+ "r" (set), \
+ "r" (compare) \
+ : "memory", "cc"); \
+ return (previous == compare); \
+ }
+
+CK_PR_CAS(32, uint32_t, "")
+CK_PR_CAS(uint, unsigned int, "")
+CK_PR_CAS(int, int, "")
+CK_PR_CAS(16, uint16_t, "h")
+CK_PR_CAS(8, uint8_t, "b")
+CK_PR_CAS(short, short, "h")
+CK_PR_CAS(char, char, "b")
+
+
+#undef CK_PR_CAS
+
+#define CK_PR_FAS(N, M, T, W) \
+ CK_CC_INLINE static T \
+ ck_pr_fas_##N(M *target, T v) \
+ { \
+ T previous = 0; \
+ T tmp = 0; \
+ __asm__ __volatile__("1:" \
+ "ldrex" W " %0, [%2];" \
+ "strex" W " %1, %3, [%2];" \
+ "cmp %1, #0;" \
+ "bne 1b;" \
+ : "+&r" (previous), \
+ "+&r" (tmp) \
+ : "r" (target), \
+ "r" (v) \
+ : "memory", "cc"); \
+ return (previous); \
+ }
+
+CK_PR_FAS(32, uint32_t, uint32_t, "")
+CK_PR_FAS(ptr, void, void *, "")
+CK_PR_FAS(int, int, int, "")
+CK_PR_FAS(uint, unsigned int, unsigned int, "")
+CK_PR_FAS(16, uint16_t, uint16_t, "h")
+CK_PR_FAS(8, uint8_t, uint8_t, "b")
+CK_PR_FAS(short, short, short, "h")
+CK_PR_FAS(char, char, char, "b")
+
+
+#undef CK_PR_FAS
+
+#define CK_PR_UNARY(O, N, M, T, I, W) \
+ CK_CC_INLINE static void \
+ ck_pr_##O##_##N(M *target) \
+ { \
+ T previous = 0; \
+ T tmp = 0; \
+ __asm__ __volatile__("1:" \
+ "ldrex" W " %0, [%2];" \
+ I ";" \
+ "strex" W " %1, %0, [%2];" \
+ "cmp %1, #0;" \
+ "bne 1b;" \
+ : "+&r" (previous), \
+ "+&r" (tmp) \
+ : "r" (target) \
+ : "memory", "cc"); \
+ return; \
+ }
+
+CK_PR_UNARY(inc, ptr, void, void *, "add %0, %0, #1", "")
+CK_PR_UNARY(dec, ptr, void, void *, "sub %0, %0, #1", "")
+CK_PR_UNARY(not, ptr, void, void *, "mvn %0, %0", "")
+CK_PR_UNARY(neg, ptr, void, void *, "neg %0, %0", "")
+
+#define CK_PR_UNARY_S(S, T, W) \
+ CK_PR_UNARY(inc, S, T, T, "add %0, %0, #1", W) \
+ CK_PR_UNARY(dec, S, T, T, "sub %0, %0, #1", W) \
+ CK_PR_UNARY(not, S, T, T, "mvn %0, %0", W) \
+ CK_PR_UNARY(neg, S, T, T, "neg %0, %0", W) \
+
+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, I, W) \
+ CK_CC_INLINE static void \
+ ck_pr_##O##_##N(M *target, T delta) \
+ { \
+ T previous = 0; \
+ T tmp = 0; \
+ __asm__ __volatile__("1:" \
+ "ldrex" W " %0, [%2];" \
+ I " %0, %0, %3;" \
+ "strex" W " %1, %0, [%2];" \
+ "cmp %1, #0;" \
+ "bne 1b;" \
+ : "+&r" (previous), \
+ "+&r" (tmp) \
+ : "r" (target), \
+ "r" (delta) \
+ : "memory", "cc"); \
+ return; \
+ }
+
+CK_PR_BINARY(and, ptr, void, uintptr_t, "and", "")
+CK_PR_BINARY(add, ptr, void, uintptr_t, "add", "")
+CK_PR_BINARY(or, ptr, void, uintptr_t, "orr", "")
+CK_PR_BINARY(sub, ptr, void, uintptr_t, "sub", "")
+CK_PR_BINARY(xor, ptr, void, uintptr_t, "eor", "")
+
+#define CK_PR_BINARY_S(S, T, W) \
+ CK_PR_BINARY(and, S, T, T, "and", W) \
+ CK_PR_BINARY(add, S, T, T, "add", W) \
+ CK_PR_BINARY(or, S, T, T, "orr", W) \
+ CK_PR_BINARY(sub, S, T, T, "sub", W) \
+ CK_PR_BINARY(xor, S, T, T, "eor", 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, r, tmp;
+
+ __asm__ __volatile__("1:"
+ "ldrex %0, [%3];"
+ "add %1, %4, %0;"
+ "strex %2, %1, [%3];"
+ "cmp %2, #0;"
+ "bne 1b;"
+ : "=&r" (previous),
+ "=&r" (r),
+ "=&r" (tmp)
+ : "r" (target),
+ "r" (delta)
+ : "memory", "cc");
+
+ return (void *)(previous);
+}
+
+#define CK_PR_FAA(S, T, W) \
+ CK_CC_INLINE static T \
+ ck_pr_faa_##S(T *target, T delta) \
+ { \
+ T previous = 0, r = 0, tmp = 0; \
+ __asm__ __volatile__("1:" \
+ "ldrex" W " %0, [%3];" \
+ "add %1, %4, %0;" \
+ "strex" W " %2, %1, [%3];" \
+ "cmp %2, #0;" \
+ "bne 1b;" \
+ : "+&r" (previous), \
+ "+&r" (r), \
+ "+&r" (tmp) \
+ : "r" (target), \
+ "r" (delta) \
+ : "memory", "cc"); \
+ 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_ARM_H */
+
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