gen-atomic-fallback.sh (47401d94947d507ff9f33fccf490baf47638fb69) gen-atomic-fallback.sh (f3e615b4db1fb7034f1d76dc307b77cc848f040e)
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4ATOMICDIR=$(dirname $0)
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4ATOMICDIR=$(dirname $0)
5ARCH=$2
6
7. ${ATOMICDIR}/atomic-tbl.sh
8
5
6. ${ATOMICDIR}/atomic-tbl.sh
7
9#gen_template_fallback(template, meta, pfx, name, sfx, order, arch, atomic, int, args...)
8#gen_template_fallback(template, meta, pfx, name, sfx, order, 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
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
18 local arch="$1"; shift
19 local atomic="$1"; shift
20 local int="$1"; shift
21
17 local atomic="$1"; shift
18 local int="$1"; shift
19
22 local atomicname="${arch}${atomic}_${pfx}${name}${sfx}${order}"
20 local atomicname="arch_${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} ${atomicname}\n"
33 printf "#endif\n\n"
34 fi
35}
36
21
22 local ret="$(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
37#gen_proto_fallback(meta, pfx, name, sfx, order, arch, atomic, int, args...)
35#gen_proto_fallback(meta, pfx, name, sfx, order, 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

--- 14 unchanged lines hidden (view full) ---

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
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

--- 14 unchanged lines hidden (view full) ---

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
68 local arch="$1"
69 local atomic="$2"
66 local atomic="$1"
70
67
71 local basename="${arch}${atomic}_${pfx}${name}${sfx}"
68 local basename="arch_${atomic}_${pfx}${name}${sfx}"
72
69
73 printf "#define arch_${basename}${order} ${basename}${order}\n"
70 printf "#define ${basename}${order} ${basename}${order}\n"
74}
75
71}
72
76#gen_proto_order_variants(meta, pfx, name, sfx, arch, atomic, int, args...)
73#gen_proto_order_variants(meta, pfx, name, sfx, 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
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
83 local arch="$1"
84 local atomic="$2"
80 local atomic="$1"
85
81
86 local basename="${arch}${atomic}_${pfx}${name}${sfx}"
82 local basename="arch_${atomic}_${pfx}${name}${sfx}"
87
88 local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
89
83
84 local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
85
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

--- 68 unchanged lines hidden (view full) ---

182 printf "#endif /* ${xchg}_relaxed */\n\n"
183}
184
185gen_try_cmpxchg_fallback()
186{
187 local order="$1"; shift;
188
189cat <<EOF
86 # If we don't have relaxed atomics, then we don't bother with ordering fallbacks
87 # read_acquire and set_release need to be templated, though
88 if ! meta_has_relaxed "${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

--- 68 unchanged lines hidden (view full) ---

162 printf "#endif /* ${xchg}_relaxed */\n\n"
163}
164
165gen_try_cmpxchg_fallback()
166{
167 local order="$1"; shift;
168
169cat <<EOF
190#ifndef ${ARCH}try_cmpxchg${order}
191#define ${ARCH}try_cmpxchg${order}(_ptr, _oldp, _new) \\
170#ifndef arch_try_cmpxchg${order}
171#define arch_try_cmpxchg${order}(_ptr, _oldp, _new) \\
192({ \\
193 typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \\
172({ \\
173 typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \\
194 ___r = ${ARCH}cmpxchg${order}((_ptr), ___o, (_new)); \\
174 ___r = arch_cmpxchg${order}((_ptr), ___o, (_new)); \\
195 if (unlikely(___r != ___o)) \\
196 *___op = ___r; \\
197 likely(___r == ___o); \\
198})
175 if (unlikely(___r != ___o)) \\
176 *___op = ___r; \\
177 likely(___r == ___o); \\
178})
199#endif /* ${ARCH}try_cmpxchg${order} */
179#endif /* arch_try_cmpxchg${order} */
200
201EOF
202}
203
204gen_try_cmpxchg_fallbacks()
205{
180
181EOF
182}
183
184gen_try_cmpxchg_fallbacks()
185{
206 printf "#ifndef ${ARCH}try_cmpxchg_relaxed\n"
207 printf "#ifdef ${ARCH}try_cmpxchg\n"
186 printf "#ifndef arch_try_cmpxchg_relaxed\n"
187 printf "#ifdef arch_try_cmpxchg\n"
208
188
209 gen_basic_fallbacks "${ARCH}try_cmpxchg"
189 gen_basic_fallbacks "arch_try_cmpxchg"
210
190
211 printf "#endif /* ${ARCH}try_cmpxchg */\n\n"
191 printf "#endif /* arch_try_cmpxchg */\n\n"
212
213 for order in "" "_acquire" "_release" "_relaxed"; do
214 gen_try_cmpxchg_fallback "${order}"
215 done
216
192
193 for order in "" "_acquire" "_release" "_relaxed"; do
194 gen_try_cmpxchg_fallback "${order}"
195 done
196
217 printf "#else /* ${ARCH}try_cmpxchg_relaxed */\n"
197 printf "#else /* arch_try_cmpxchg_relaxed */\n"
218
198
219 gen_order_fallbacks "${ARCH}try_cmpxchg"
199 gen_order_fallbacks "arch_try_cmpxchg"
220
200
221 printf "#endif /* ${ARCH}try_cmpxchg_relaxed */\n\n"
201 printf "#endif /* arch_try_cmpxchg_relaxed */\n\n"
222}
223
224cat << EOF
225// SPDX-License-Identifier: GPL-2.0
226
227// Generated by $0
228// DO NOT MODIFY THIS FILE DIRECTLY
229
230#ifndef _LINUX_ATOMIC_FALLBACK_H
231#define _LINUX_ATOMIC_FALLBACK_H
232
233#include <linux/compiler.h>
234
235EOF
236
202}
203
204cat << EOF
205// SPDX-License-Identifier: GPL-2.0
206
207// Generated by $0
208// DO NOT MODIFY THIS FILE DIRECTLY
209
210#ifndef _LINUX_ATOMIC_FALLBACK_H
211#define _LINUX_ATOMIC_FALLBACK_H
212
213#include <linux/compiler.h>
214
215EOF
216
237for xchg in "${ARCH}xchg" "${ARCH}cmpxchg" "${ARCH}cmpxchg64"; do
217for xchg in "arch_xchg" "arch_cmpxchg" "arch_cmpxchg64"; do
238 gen_xchg_fallbacks "${xchg}"
239done
240
241gen_try_cmpxchg_fallbacks
242
243grep '^[a-z]' "$1" | while read name meta args; do
218 gen_xchg_fallbacks "${xchg}"
219done
220
221gen_try_cmpxchg_fallbacks
222
223grep '^[a-z]' "$1" | while read name meta args; do
244 gen_proto "${meta}" "${name}" "${ARCH}" "atomic" "int" ${args}
224 gen_proto "${meta}" "${name}" "atomic" "int" ${args}
245done
246
247cat <<EOF
248#ifdef CONFIG_GENERIC_ATOMIC64
249#include <asm-generic/atomic64.h>
250#endif
251
252EOF
253
254grep '^[a-z]' "$1" | while read name meta args; do
225done
226
227cat <<EOF
228#ifdef CONFIG_GENERIC_ATOMIC64
229#include <asm-generic/atomic64.h>
230#endif
231
232EOF
233
234grep '^[a-z]' "$1" | while read name meta args; do
255 gen_proto "${meta}" "${name}" "${ARCH}" "atomic64" "s64" ${args}
235 gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
256done
257
258cat <<EOF
259#endif /* _LINUX_ATOMIC_FALLBACK_H */
260EOF
236done
237
238cat <<EOF
239#endif /* _LINUX_ATOMIC_FALLBACK_H */
240EOF