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1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4ATOMICDIR=$(dirname $0)
5
6. ${ATOMICDIR}/atomic-tbl.sh
7
8#gen_template_fallback(template, meta, pfx, name, sfx, order, atomic, int, args...)
9gen_template_fallback()
10{
11 local template="$1"; shift
12 local meta="$1"; shift
13 local pfx="$1"; shift
14 local name="$1"; shift
15 local sfx="$1"; shift
16 local order="$1"; shift
17 local atomic="$1"; shift
18 local int="$1"; shift
19
20 local atomicname="arch_${atomic}_${pfx}${name}${sfx}${order}"
21
22 local ret="$(gen_ret_type "${meta}" "${int}")"
23 local retstmt="$(gen_ret_stmt "${meta}")"
24 local params="$(gen_params "${int}" "${atomic}" "$@")"
25 local args="$(gen_args "$@")"
26
27 if [ ! -z "${template}" ]; then
28 printf "#ifndef ${atomicname}\n"
29 . ${template}
30 printf "#define ${atomicname} ${atomicname}\n"
31 printf "#endif\n\n"
32 fi
33}
34
35#gen_proto_fallback(meta, pfx, name, sfx, order, atomic, int, args...)
36gen_proto_fallback()
37{
38 local meta="$1"; shift
39 local pfx="$1"; shift
40 local name="$1"; shift
41 local sfx="$1"; shift
42 local order="$1"; shift
43
44 local tmpl="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
45 gen_template_fallback "${tmpl}" "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "$@"
46}
47
48#gen_basic_fallbacks(basename)
49gen_basic_fallbacks()
50{
51 local basename="$1"; shift
52cat << EOF
53#define ${basename}_acquire ${basename}
54#define ${basename}_release ${basename}
55#define ${basename}_relaxed ${basename}
56EOF
57}
58
59gen_proto_order_variant()
60{
61 local meta="$1"; shift
62 local pfx="$1"; shift
63 local name="$1"; shift
64 local sfx="$1"; shift
65 local order="$1"; shift
66 local atomic="$1"
67
68 local basename="arch_${atomic}_${pfx}${name}${sfx}"
69
70 printf "#define ${basename}${order} ${basename}${order}\n"
71}
72
73#gen_proto_order_variants(meta, pfx, name, sfx, atomic, int, args...)
74gen_proto_order_variants()
75{
76 local meta="$1"; shift
77 local pfx="$1"; shift
78 local name="$1"; shift
79 local sfx="$1"; shift
80 local atomic="$1"
81
82 local basename="arch_${atomic}_${pfx}${name}${sfx}"
83
84 local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
85
86 # If we don't have relaxed atomics, then we don't bother with ordering fallbacks
87 # read_acquire and set_release need to be templated, though
88 if ! meta_has_relaxed "${meta}"; then
89 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
90
91 if meta_has_acquire "${meta}"; then
92 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
93 fi
94
95 if meta_has_release "${meta}"; then
96 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
97 fi
98
99 return
100 fi
101
102 printf "#ifndef ${basename}_relaxed\n"
103
104 if [ ! -z "${template}" ]; then
105 printf "#ifdef ${basename}\n"
106 fi
107
108 gen_basic_fallbacks "${basename}"
109
110 if [ ! -z "${template}" ]; then
111 printf "#endif /* ${basename} */\n\n"
112 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
113 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
114 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
115 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
116 fi
117
118 printf "#else /* ${basename}_relaxed */\n\n"
119
120 gen_template_fallback "${ATOMICDIR}/fallbacks/acquire" "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
121 gen_template_fallback "${ATOMICDIR}/fallbacks/release" "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
122 gen_template_fallback "${ATOMICDIR}/fallbacks/fence" "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
123
124 printf "#endif /* ${basename}_relaxed */\n\n"
125}
126
127gen_order_fallbacks()
128{
129 local xchg="$1"; shift
130
131cat <<EOF
132
133#ifndef ${xchg}_acquire
134#define ${xchg}_acquire(...) \\
135 __atomic_op_acquire(${xchg}, __VA_ARGS__)
136#endif
137
138#ifndef ${xchg}_release
139#define ${xchg}_release(...) \\
140 __atomic_op_release(${xchg}, __VA_ARGS__)
141#endif
142
143#ifndef ${xchg}
144#define ${xchg}(...) \\
145 __atomic_op_fence(${xchg}, __VA_ARGS__)
146#endif
147
148EOF
149}
150
151gen_xchg_fallbacks()
152{
153 local xchg="$1"; shift
154 printf "#ifndef ${xchg}_relaxed\n"
155
156 gen_basic_fallbacks ${xchg}
157
158 printf "#else /* ${xchg}_relaxed */\n"
159
160 gen_order_fallbacks ${xchg}
161
162 printf "#endif /* ${xchg}_relaxed */\n\n"
163}
164
165gen_try_cmpxchg_fallback()
166{
167 local cmpxchg="$1"; shift;
168 local order="$1"; shift;
169
170cat <<EOF
171#ifndef arch_try_${cmpxchg}${order}
172#define arch_try_${cmpxchg}${order}(_ptr, _oldp, _new) \\
173({ \\
174 typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \\
175 ___r = arch_${cmpxchg}${order}((_ptr), ___o, (_new)); \\
176 if (unlikely(___r != ___o)) \\
177 *___op = ___r; \\
178 likely(___r == ___o); \\
179})
180#endif /* arch_try_${cmpxchg}${order} */
181
182EOF
183}
184
185gen_try_cmpxchg_fallbacks()
186{
187 local cmpxchg="$1"; shift;
188
189 printf "#ifndef arch_try_${cmpxchg}_relaxed\n"
190 printf "#ifdef arch_try_${cmpxchg}\n"
191
192 gen_basic_fallbacks "arch_try_${cmpxchg}"
193
194 printf "#endif /* arch_try_${cmpxchg} */\n\n"
195
196 for order in "" "_acquire" "_release" "_relaxed"; do
197 gen_try_cmpxchg_fallback "${cmpxchg}" "${order}"
198 done
199
200 printf "#else /* arch_try_${cmpxchg}_relaxed */\n"
201
202 gen_order_fallbacks "arch_try_${cmpxchg}"
203
204 printf "#endif /* arch_try_${cmpxchg}_relaxed */\n\n"
205}
206
207cat << EOF
208// SPDX-License-Identifier: GPL-2.0
209
210// Generated by $0
211// DO NOT MODIFY THIS FILE DIRECTLY
212
213#ifndef _LINUX_ATOMIC_FALLBACK_H
214#define _LINUX_ATOMIC_FALLBACK_H
215
216#include <linux/compiler.h>
217
218EOF
219
220for xchg in "arch_xchg" "arch_cmpxchg" "arch_cmpxchg64"; do
221 gen_xchg_fallbacks "${xchg}"
222done
223
224for cmpxchg in "cmpxchg" "cmpxchg64"; do
225 gen_try_cmpxchg_fallbacks "${cmpxchg}"
226done
227
228grep '^[a-z]' "$1" | while read name meta args; do
229 gen_proto "${meta}" "${name}" "atomic" "int" ${args}
230done
231
232cat <<EOF
233#ifdef CONFIG_GENERIC_ATOMIC64
234#include <asm-generic/atomic64.h>
235#endif
236
237EOF
238
239grep '^[a-z]' "$1" | while read name meta args; do
240 gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
241done
242
243cat <<EOF
244#endif /* _LINUX_ATOMIC_FALLBACK_H */
245EOF
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4ATOMICDIR=$(dirname $0)
5ARCH=$2
6
7. ${ATOMICDIR}/atomic-tbl.sh
8
9#gen_template_fallback(template, meta, pfx, name, sfx, order, arch, atomic, int, args...)
10gen_template_fallback()
11{
12 local template="$1"; shift
13 local meta="$1"; shift
14 local pfx="$1"; shift
15 local name="$1"; shift
16 local sfx="$1"; shift
17 local order="$1"; shift
18 local arch="$1"; shift
19 local atomic="$1"; shift
20 local int="$1"; shift
21
22 local atomicname="${arch}${atomic}_${pfx}${name}${sfx}${order}"
23
24 local ret="$(gen_ret_type "${meta}" "${int}")"
25 local retstmt="$(gen_ret_stmt "${meta}")"
26 local params="$(gen_params "${int}" "${atomic}" "$@")"
27 local args="$(gen_args "$@")"
28
29 if [ ! -z "${template}" ]; then
30 printf "#ifndef ${atomicname}\n"
31 . ${template}
32 printf "#define ${atomicname} ${atomicname}\n"
33 printf "#endif\n\n"
34 fi
35}
36
37#gen_proto_fallback(meta, pfx, name, sfx, order, arch, atomic, int, args...)
38gen_proto_fallback()
39{
40 local meta="$1"; shift
41 local pfx="$1"; shift
42 local name="$1"; shift
43 local sfx="$1"; shift
44 local order="$1"; shift
45
46 local tmpl="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
47 gen_template_fallback "${tmpl}" "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "$@"
48}
49
50#gen_basic_fallbacks(basename)
51gen_basic_fallbacks()
52{
53 local basename="$1"; shift
54cat << EOF
55#define ${basename}_acquire ${basename}
56#define ${basename}_release ${basename}
57#define ${basename}_relaxed ${basename}
58EOF
59}
60
61gen_proto_order_variant()
62{
63 local meta="$1"; shift
64 local pfx="$1"; shift
65 local name="$1"; shift
66 local sfx="$1"; shift
67 local order="$1"; shift
68 local arch="$1"
69 local atomic="$2"
70
71 local basename="${arch}${atomic}_${pfx}${name}${sfx}"
72
73 printf "#define arch_${basename}${order} ${basename}${order}\n"
74}
75
76#gen_proto_order_variants(meta, pfx, name, sfx, arch, atomic, int, args...)
77gen_proto_order_variants()
78{
79 local meta="$1"; shift
80 local pfx="$1"; shift
81 local name="$1"; shift
82 local sfx="$1"; shift
83 local arch="$1"
84 local atomic="$2"
85
86 local basename="${arch}${atomic}_${pfx}${name}${sfx}"
87
88 local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
89
90 if [ -z "$arch" ]; then
91 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
92
93 if meta_has_acquire "${meta}"; then
94 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
95 fi
96 if meta_has_release "${meta}"; then
97 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
98 fi
99 if meta_has_relaxed "${meta}"; then
100 gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
101 fi
102
103 echo ""
104 fi
105
106 # If we don't have relaxed atomics, then we don't bother with ordering fallbacks
107 # read_acquire and set_release need to be templated, though
108 if ! meta_has_relaxed "${meta}"; then
109 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
110
111 if meta_has_acquire "${meta}"; then
112 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
113 fi
114
115 if meta_has_release "${meta}"; then
116 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
117 fi
118
119 return
120 fi
121
122 printf "#ifndef ${basename}_relaxed\n"
123
124 if [ ! -z "${template}" ]; then
125 printf "#ifdef ${basename}\n"
126 fi
127
128 gen_basic_fallbacks "${basename}"
129
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" "$@"
136 fi
137
138 printf "#else /* ${basename}_relaxed */\n\n"
139
140 gen_template_fallback "${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}" "" "$@"
143
144 printf "#endif /* ${basename}_relaxed */\n\n"
145}
146
147gen_xchg_fallbacks()
148{
149 local xchg="$1"; shift
150cat <<EOF
151#ifndef ${xchg}_relaxed
152#define ${xchg}_relaxed ${xchg}
153#define ${xchg}_acquire ${xchg}
154#define ${xchg}_release ${xchg}
155#else /* ${xchg}_relaxed */
156
157#ifndef ${xchg}_acquire
158#define ${xchg}_acquire(...) \\
159 __atomic_op_acquire(${xchg}, __VA_ARGS__)
160#endif
161
162#ifndef ${xchg}_release
163#define ${xchg}_release(...) \\
164 __atomic_op_release(${xchg}, __VA_ARGS__)
165#endif
166
167#ifndef ${xchg}
168#define ${xchg}(...) \\
169 __atomic_op_fence(${xchg}, __VA_ARGS__)
170#endif
171
172#endif /* ${xchg}_relaxed */
173
174EOF
175}
176
177cat << EOF
178// SPDX-License-Identifier: GPL-2.0
179
180// Generated by $0
181// DO NOT MODIFY THIS FILE DIRECTLY
182
183#ifndef _LINUX_ATOMIC_FALLBACK_H
184#define _LINUX_ATOMIC_FALLBACK_H
185
186#include <linux/compiler.h>
187
188EOF
189
190for xchg in "${ARCH}xchg" "${ARCH}cmpxchg" "${ARCH}cmpxchg64"; do
191 gen_xchg_fallbacks "${xchg}"
192done
193
194grep '^[a-z]' "$1" | while read name meta args; do
195 gen_proto "${meta}" "${name}" "${ARCH}" "atomic" "int" ${args}
196done
197
198cat <<EOF
199#ifdef CONFIG_GENERIC_ATOMIC64
200#include <asm-generic/atomic64.h>
201#endif
202
203EOF
204
205grep '^[a-z]' "$1" | while read name meta args; do
206 gen_proto "${meta}" "${name}" "${ARCH}" "atomic64" "s64" ${args}
207done
208
209cat <<EOF
210#endif /* _LINUX_ATOMIC_FALLBACK_H */
211EOF