| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| ATOMICDIR=$(dirname $0) |
| ARCH=$2 |
| |
| . ${ATOMICDIR}/atomic-tbl.sh |
| |
| #gen_template_fallback(template, meta, pfx, name, sfx, order, arch, atomic, int, args...) |
| gen_template_fallback() |
| { |
| local template="$1"; shift |
| local meta="$1"; shift |
| local pfx="$1"; shift |
| local name="$1"; shift |
| local sfx="$1"; shift |
| local order="$1"; shift |
| local arch="$1"; shift |
| local atomic="$1"; shift |
| local int="$1"; shift |
| |
| local atomicname="${arch}${atomic}_${pfx}${name}${sfx}${order}" |
| |
| local ret="$(gen_ret_type "${meta}" "${int}")" |
| local retstmt="$(gen_ret_stmt "${meta}")" |
| local params="$(gen_params "${int}" "${atomic}" "$@")" |
| local args="$(gen_args "$@")" |
| |
| if [ ! -z "${template}" ]; then |
| printf "#ifndef ${atomicname}\n" |
| . ${template} |
| printf "#define ${atomicname} ${atomicname}\n" |
| printf "#endif\n\n" |
| fi |
| } |
| |
| #gen_proto_fallback(meta, pfx, name, sfx, order, arch, atomic, int, args...) |
| gen_proto_fallback() |
| { |
| local meta="$1"; shift |
| local pfx="$1"; shift |
| local name="$1"; shift |
| local sfx="$1"; shift |
| local order="$1"; shift |
| |
| local tmpl="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")" |
| gen_template_fallback "${tmpl}" "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "$@" |
| } |
| |
| #gen_basic_fallbacks(basename) |
| gen_basic_fallbacks() |
| { |
| local basename="$1"; shift |
| cat << EOF |
| #define ${basename}_acquire ${basename} |
| #define ${basename}_release ${basename} |
| #define ${basename}_relaxed ${basename} |
| EOF |
| } |
| |
| #gen_proto_order_variants(meta, pfx, name, sfx, arch, atomic, int, args...) |
| gen_proto_order_variants() |
| { |
| local meta="$1"; shift |
| local pfx="$1"; shift |
| local name="$1"; shift |
| local sfx="$1"; shift |
| local arch="$1" |
| local atomic="$2" |
| |
| local basename="${arch}${atomic}_${pfx}${name}${sfx}" |
| |
| local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")" |
| |
| # If we don't have relaxed atomics, then we don't bother with ordering fallbacks |
| # read_acquire and set_release need to be templated, though |
| if ! meta_has_relaxed "${meta}"; then |
| gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@" |
| |
| if meta_has_acquire "${meta}"; then |
| gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@" |
| fi |
| |
| if meta_has_release "${meta}"; then |
| gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@" |
| fi |
| |
| return |
| fi |
| |
| printf "#ifndef ${basename}_relaxed\n" |
| |
| if [ ! -z "${template}" ]; then |
| printf "#ifdef ${basename}\n" |
| fi |
| |
| gen_basic_fallbacks "${basename}" |
| |
| if [ ! -z "${template}" ]; then |
| printf "#endif /* ${arch}${atomic}_${pfx}${name}${sfx} */\n\n" |
| gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@" |
| gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@" |
| gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@" |
| gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@" |
| fi |
| |
| printf "#else /* ${basename}_relaxed */\n\n" |
| |
| gen_template_fallback "${ATOMICDIR}/fallbacks/acquire" "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@" |
| gen_template_fallback "${ATOMICDIR}/fallbacks/release" "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@" |
| gen_template_fallback "${ATOMICDIR}/fallbacks/fence" "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@" |
| |
| printf "#endif /* ${basename}_relaxed */\n\n" |
| } |
| |
| gen_xchg_fallbacks() |
| { |
| local xchg="$1"; shift |
| cat <<EOF |
| #ifndef ${xchg}_relaxed |
| #define ${xchg}_relaxed ${xchg} |
| #define ${xchg}_acquire ${xchg} |
| #define ${xchg}_release ${xchg} |
| #else /* ${xchg}_relaxed */ |
| |
| #ifndef ${xchg}_acquire |
| #define ${xchg}_acquire(...) \\ |
| __atomic_op_acquire(${xchg}, __VA_ARGS__) |
| #endif |
| |
| #ifndef ${xchg}_release |
| #define ${xchg}_release(...) \\ |
| __atomic_op_release(${xchg}, __VA_ARGS__) |
| #endif |
| |
| #ifndef ${xchg} |
| #define ${xchg}(...) \\ |
| __atomic_op_fence(${xchg}, __VA_ARGS__) |
| #endif |
| |
| #endif /* ${xchg}_relaxed */ |
| |
| EOF |
| } |
| |
| cat << EOF |
| // SPDX-License-Identifier: GPL-2.0 |
| |
| // Generated by $0 |
| // DO NOT MODIFY THIS FILE DIRECTLY |
| |
| #ifndef _LINUX_ATOMIC_FALLBACK_H |
| #define _LINUX_ATOMIC_FALLBACK_H |
| |
| #include <linux/compiler.h> |
| |
| EOF |
| |
| for xchg in "${ARCH}xchg" "${ARCH}cmpxchg" "${ARCH}cmpxchg64"; do |
| gen_xchg_fallbacks "${xchg}" |
| done |
| |
| grep '^[a-z]' "$1" | while read name meta args; do |
| gen_proto "${meta}" "${name}" "${ARCH}" "atomic" "int" ${args} |
| done |
| |
| cat <<EOF |
| #ifdef CONFIG_GENERIC_ATOMIC64 |
| #include <asm-generic/atomic64.h> |
| #endif |
| |
| EOF |
| |
| grep '^[a-z]' "$1" | while read name meta args; do |
| gen_proto "${meta}" "${name}" "${ARCH}" "atomic64" "s64" ${args} |
| done |
| |
| cat <<EOF |
| #endif /* _LINUX_ATOMIC_FALLBACK_H */ |
| EOF |