187 lines
3.3 KiB
Bash
Executable File
187 lines
3.3 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# helpers for dealing with atomics.tbl
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#meta_in(meta, match)
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meta_in()
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{
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case "$1" in
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[$2]) return 0;;
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esac
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return 1
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}
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#meta_has_ret(meta)
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meta_has_ret()
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{
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meta_in "$1" "bBiIfFlR"
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}
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#meta_has_acquire(meta)
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meta_has_acquire()
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{
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meta_in "$1" "BFIlR"
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}
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#meta_has_release(meta)
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meta_has_release()
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{
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meta_in "$1" "BFIRs"
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}
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#meta_has_relaxed(meta)
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meta_has_relaxed()
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{
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meta_in "$1" "BFIR"
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}
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#find_fallback_template(pfx, name, sfx, order)
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find_fallback_template()
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{
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local pfx="$1"; shift
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local name="$1"; shift
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local sfx="$1"; shift
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local order="$1"; shift
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local base=""
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local file=""
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# We may have fallbacks for a specific case (e.g. read_acquire()), or
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# an entire class, e.g. *inc*().
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#
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# Start at the most specific, and fall back to the most general. Once
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# we find a specific fallback, don't bother looking for more.
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for base in "${pfx}${name}${sfx}${order}" "${name}"; do
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file="${ATOMICDIR}/fallbacks/${base}"
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if [ -f "${file}" ]; then
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printf "${file}"
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break
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fi
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done
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}
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#gen_ret_type(meta, int)
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gen_ret_type() {
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local meta="$1"; shift
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local int="$1"; shift
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case "${meta}" in
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[sv]) printf "void";;
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[bB]) printf "bool";;
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[aiIfFlR]) printf "${int}";;
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esac
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}
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#gen_ret_stmt(meta)
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gen_ret_stmt()
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{
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if meta_has_ret "${meta}"; then
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printf "return ";
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fi
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}
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# gen_param_name(arg)
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gen_param_name()
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{
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# strip off the leading 'c' for 'cv'
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local name="${1#c}"
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printf "${name#*:}"
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}
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# gen_param_type(arg, int, atomic)
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gen_param_type()
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{
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local type="${1%%:*}"; shift
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local int="$1"; shift
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local atomic="$1"; shift
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case "${type}" in
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i) type="${int} ";;
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p) type="${int} *";;
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v) type="${atomic}_t *";;
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cv) type="const ${atomic}_t *";;
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esac
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printf "${type}"
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}
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#gen_param(arg, int, atomic)
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gen_param()
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{
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local arg="$1"; shift
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local int="$1"; shift
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local atomic="$1"; shift
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local name="$(gen_param_name "${arg}")"
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local type="$(gen_param_type "${arg}" "${int}" "${atomic}")"
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printf "${type}${name}"
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}
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#gen_params(int, atomic, arg...)
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gen_params()
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{
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local int="$1"; shift
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local atomic="$1"; shift
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while [ "$#" -gt 0 ]; do
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gen_param "$1" "${int}" "${atomic}"
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[ "$#" -gt 1 ] && printf ", "
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shift;
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done
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}
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#gen_args(arg...)
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gen_args()
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{
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while [ "$#" -gt 0 ]; do
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printf "$(gen_param_name "$1")"
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[ "$#" -gt 1 ] && printf ", "
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shift;
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done
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}
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#gen_proto_order_variants(meta, pfx, name, sfx, ...)
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gen_proto_order_variants()
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{
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local meta="$1"; shift
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local pfx="$1"; shift
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local name="$1"; shift
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local sfx="$1"; shift
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gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
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if meta_has_acquire "${meta}"; then
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gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
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fi
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if meta_has_release "${meta}"; then
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gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
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fi
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if meta_has_relaxed "${meta}"; then
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gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
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fi
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}
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#gen_proto_variants(meta, name, ...)
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gen_proto_variants()
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{
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local meta="$1"; shift
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local name="$1"; shift
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local pfx=""
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local sfx=""
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meta_in "${meta}" "fF" && pfx="fetch_"
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meta_in "${meta}" "R" && sfx="_return"
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gen_proto_order_variants "${meta}" "${pfx}" "${name}" "${sfx}" "$@"
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}
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#gen_proto(meta, ...)
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gen_proto() {
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local meta="$1"; shift
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for m in $(echo "${meta}" | grep -o .); do
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gen_proto_variants "${m}" "$@"
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done
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}
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