2 # SPDX-License-Identifier: GPL-2.0
4 ATOMICDIR=$(dirname $0)
7 . ${ATOMICDIR}/atomic-tbl.sh
9 #gen_template_fallback(template, meta, pfx, name, sfx, order, arch, atomic, int, args...)
10 gen_template_fallback()
12 local template="$1"; shift
13 local meta="$1"; shift
15 local name="$1"; shift
17 local order="$1"; shift
18 local arch="$1"; shift
19 local atomic="$1"; shift
22 local atomicname="${arch}${atomic}_${pfx}${name}${sfx}${order}"
24 local ret="$(gen_ret_type "${meta}" "${int}")"
25 local retstmt="$(gen_ret_stmt "${meta}")"
26 local params="$(gen_params "${int}" "${atomic}" "$@")"
27 local args="$(gen_args "$@")"
29 if [ ! -z "${template}" ]; then
30 printf "#ifndef ${atomicname}\n"
32 printf "#define ${atomicname} ${atomicname}\n"
37 #gen_proto_fallback(meta, pfx, name, sfx, order, arch, atomic, int, args...)
40 local meta="$1"; shift
42 local name="$1"; shift
44 local order="$1"; shift
46 local tmpl="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
47 gen_template_fallback "${tmpl}" "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "$@"
50 #gen_basic_fallbacks(basename)
53 local basename="$1"; shift
55 #define ${basename}_acquire ${basename}
56 #define ${basename}_release ${basename}
57 #define ${basename}_relaxed ${basename}
61 gen_proto_order_variant()
63 local meta="$1"; shift
65 local name="$1"; shift
67 local order="$1"; shift
71 local basename="${arch}${atomic}_${pfx}${name}${sfx}"
73 printf "#define arch_${basename}${order} ${basename}${order}\n"
76 #gen_proto_order_variants(meta, pfx, name, sfx, arch, atomic, int, args...)
77 gen_proto_order_variants()
79 local meta="$1"; shift
81 local name="$1"; shift
86 local basename="${arch}${atomic}_${pfx}${name}${sfx}"
88 local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
90 if [ -z "$arch" ]; then
91 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
93 if meta_has_acquire "${meta}"; then
94 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
96 if meta_has_release "${meta}"; then
97 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
99 if meta_has_relaxed "${meta}"; then
100 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
106 # If we don't have relaxed atomics, then we don't bother with ordering fallbacks
107 # read_acquire and set_release need to be templated, though
108 if ! meta_has_relaxed "${meta}"; then
109 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
111 if meta_has_acquire "${meta}"; then
112 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
115 if meta_has_release "${meta}"; then
116 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
122 printf "#ifndef ${basename}_relaxed\n"
124 if [ ! -z "${template}" ]; then
125 printf "#ifdef ${basename}\n"
128 gen_basic_fallbacks "${basename}"
130 if [ ! -z "${template}" ]; then
131 printf "#endif /* ${arch}${atomic}_${pfx}${name}${sfx} */\n\n"
132 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
133 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
134 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
135 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
138 printf "#else /* ${basename}_relaxed */\n\n"
140 gen_template_fallback "${ATOMICDIR}/fallbacks/acquire" "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
141 gen_template_fallback "${ATOMICDIR}/fallbacks/release" "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
142 gen_template_fallback "${ATOMICDIR}/fallbacks/fence" "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
144 printf "#endif /* ${basename}_relaxed */\n\n"
149 local xchg="$1"; shift
151 #ifndef ${xchg}_relaxed
152 #define ${xchg}_relaxed ${xchg}
153 #define ${xchg}_acquire ${xchg}
154 #define ${xchg}_release ${xchg}
155 #else /* ${xchg}_relaxed */
157 #ifndef ${xchg}_acquire
158 #define ${xchg}_acquire(...) \\
159 __atomic_op_acquire(${xchg}, __VA_ARGS__)
162 #ifndef ${xchg}_release
163 #define ${xchg}_release(...) \\
164 __atomic_op_release(${xchg}, __VA_ARGS__)
168 #define ${xchg}(...) \\
169 __atomic_op_fence(${xchg}, __VA_ARGS__)
172 #endif /* ${xchg}_relaxed */
178 // SPDX-License-Identifier: GPL-2.0
181 // DO NOT MODIFY THIS FILE DIRECTLY
183 #ifndef _LINUX_ATOMIC_FALLBACK_H
184 #define _LINUX_ATOMIC_FALLBACK_H
186 #include <linux/compiler.h>
190 for xchg in "${ARCH}xchg" "${ARCH}cmpxchg" "${ARCH}cmpxchg64"; do
191 gen_xchg_fallbacks "${xchg}"
194 grep '^[a-z]' "$1" | while read name meta args; do
195 gen_proto "${meta}" "${name}" "${ARCH}" "atomic" "int" ${args}
199 #ifdef CONFIG_GENERIC_ATOMIC64
200 #include <asm-generic/atomic64.h>
205 grep '^[a-z]' "$1" | while read name meta args; do
206 gen_proto "${meta}" "${name}" "${ARCH}" "atomic64" "s64" ${args}
210 #endif /* _LINUX_ATOMIC_FALLBACK_H */