| 1 | |
| 2 | |
| 3 |
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| 4 | ATOMICDIR=$(dirname $0)
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| 5 |
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| 6 | . ${ATOMICDIR}/atomic-tbl.sh
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| 7 |
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| 8 | |
| 9 | gen_template_fallback()
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| 10 | {
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| 11 | local template="$1"; shift
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| 12 | local meta="$1"; shift
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| 13 | local pfx="$1"; shift
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| 14 | local name="$1"; shift
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| 15 | local sfx="$1"; shift
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| 16 | local order="$1"; shift
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| 17 | local atomic="$1"; shift
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| 18 | local int="$1"; shift
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| 19 |
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| 20 | local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
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| 21 |
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| 22 | local ret="$(gen_ret_type "${meta}" "${int}")"
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| 23 | local retstmt="$(gen_ret_stmt "${meta}")"
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| 24 | local params="$(gen_params "${int}" "${atomic}" "$@")"
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| 25 | local args="$(gen_args "$@")"
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| 26 |
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| 27 | if [ ! -z "${template}" ]; then
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| 28 | printf "#ifndef ${atomicname}\n"
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| 29 | . ${template}
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| 30 | printf "#define ${atomicname} ${atomicname}\n"
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| 31 | printf "#endif\n\n"
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| 32 | fi
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| 33 | }
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| 34 |
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| 35 | |
| 36 | gen_proto_fallback()
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| 37 | {
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| 38 | local meta="$1"; shift
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| 39 | local pfx="$1"; shift
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| 40 | local name="$1"; shift
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| 41 | local sfx="$1"; shift
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| 42 | local order="$1"; shift
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| 43 |
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| 44 | local tmpl="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
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| 45 | gen_template_fallback "${tmpl}" "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "$@"
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| 46 | }
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| 47 |
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| 48 | |
| 49 | gen_basic_fallbacks()
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| 50 | {
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| 51 | local basename="$1"; shift
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| 52 | cat << EOF
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| 53 | #define ${basename}_acquire ${basename}
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| 54 | #define ${basename}_release ${basename}
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| 55 | #define ${basename}_relaxed ${basename}
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| 56 | EOF
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| 57 | }
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| 58 |
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| 59 | |
| 60 | gen_proto_order_variants()
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| 61 | {
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| 62 | local meta="$1"; shift
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| 63 | local pfx="$1"; shift
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| 64 | local name="$1"; shift
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| 65 | local sfx="$1"; shift
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| 66 | local atomic="$1"
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| 67 |
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| 68 | local basename="${atomic}_${pfx}${name}${sfx}"
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| 69 |
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| 70 | local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
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| 71 |
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| 72 | |
| 73 | |
| 74 | if ! meta_has_relaxed "${meta}"; then
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| 75 | gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
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| 76 |
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| 77 | if meta_has_acquire "${meta}"; then
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| 78 | gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
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| 79 | fi
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| 80 |
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| 81 | if meta_has_release "${meta}"; then
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| 82 | gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
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| 83 | fi
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| 84 |
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| 85 | return
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| 86 | fi
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| 87 |
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| 88 | printf "#ifndef ${basename}_relaxed\n"
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| 89 |
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| 90 | if [ ! -z "${template}" ]; then
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| 91 | printf "#ifdef ${basename}\n"
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| 92 | fi
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| 93 |
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| 94 | gen_basic_fallbacks "${basename}"
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| 95 |
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| 96 | if [ ! -z "${template}" ]; then
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| 97 | printf "#endif /* ${atomic}_${pfx}${name}${sfx} */\n\n"
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| 98 | gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
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| 99 | gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
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| 100 | gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
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| 101 | gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
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| 102 | fi
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| 103 |
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| 104 | printf "#else /* ${basename}_relaxed */\n\n"
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| 105 |
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| 106 | gen_template_fallback "${ATOMICDIR}/fallbacks/acquire" "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
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| 107 | gen_template_fallback "${ATOMICDIR}/fallbacks/release" "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
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| 108 | gen_template_fallback "${ATOMICDIR}/fallbacks/fence" "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
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| 109 |
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| 110 | printf "#endif /* ${basename}_relaxed */\n\n"
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| 111 | }
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| 112 |
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| 113 | gen_xchg_fallbacks()
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| 114 | {
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| 115 | local xchg="$1"; shift
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| 116 | cat <<EOF
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| 117 | #ifndef ${xchg}_relaxed
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| 118 | #define ${xchg}_relaxed ${xchg}
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| 119 | #define ${xchg}_acquire ${xchg}
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| 120 | #define ${xchg}_release ${xchg}
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| 121 | #else /* ${xchg}_relaxed */
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| 122 |
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| 123 | #ifndef ${xchg}_acquire
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| 124 | #define ${xchg}_acquire(...) \\
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| 125 | __atomic_op_acquire(${xchg}, __VA_ARGS__)
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| 126 | #endif
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| 127 |
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| 128 | #ifndef ${xchg}_release
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| 129 | #define ${xchg}_release(...) \\
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| 130 | __atomic_op_release(${xchg}, __VA_ARGS__)
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| 131 | #endif
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| 132 |
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| 133 | #ifndef ${xchg}
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| 134 | #define ${xchg}(...) \\
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| 135 | __atomic_op_fence(${xchg}, __VA_ARGS__)
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| 136 | #endif
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| 137 |
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| 138 | #endif /* ${xchg}_relaxed */
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| 139 |
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| 140 | EOF
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| 141 | }
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| 142 |
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| 143 | cat << EOF
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| 144 | // SPDX-License-Identifier: GPL-2.0
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| 145 |
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| 146 | // Generated by $0
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| 147 | // DO NOT MODIFY THIS FILE DIRECTLY
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| 148 |
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| 149 | #ifndef _LINUX_ATOMIC_FALLBACK_H
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| 150 | #define _LINUX_ATOMIC_FALLBACK_H
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| 151 |
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| 152 | EOF
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| 153 |
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| 154 | for xchg in "xchg" "cmpxchg" "cmpxchg64"; do
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| 155 | gen_xchg_fallbacks "${xchg}"
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| 156 | done
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| 157 |
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| 158 | grep '^[a-z]' "$1" | while read name meta args; do
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| 159 | gen_proto "${meta}" "${name}" "atomic" "int" ${args}
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| 160 | done
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| 161 |
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| 162 | cat <<EOF
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| 163 | #define atomic_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c))
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| 164 | #define atomic_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c))
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| 165 |
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| 166 | #ifdef CONFIG_GENERIC_ATOMIC64
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| 167 | #include <asm-generic/atomic64.h>
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| 168 | #endif
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| 169 |
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| 170 | EOF
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| 171 |
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| 172 | grep '^[a-z]' "$1" | while read name meta args; do
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| 173 | gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
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| 174 | done
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| 175 |
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| 176 | cat <<EOF
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| 177 | #define atomic64_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c))
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| 178 | #define atomic64_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c))
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| 179 |
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| 180 | #endif /* _LINUX_ATOMIC_FALLBACK_H */
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| 181 | EOF
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