linux-imx

#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

# helpers for dealing with atomics.tbl

​

#meta_in(meta, match)

meta_in()

{

    case "$1" in

    [$2]) return 0;;

    esac

​

    return 1

}

​

#meta_has_ret(meta)

meta_has_ret()

{

    meta_in "$1" "bBiIfFlR"

}

​

#meta_has_acquire(meta)

meta_has_acquire()

{

    meta_in "$1" "BFIlR"

}

​

#meta_has_release(meta)

meta_has_release()

{

    meta_in "$1" "BFIRs"

}

​

#meta_has_relaxed(meta)

meta_has_relaxed()

{

    meta_in "$1" "BFIR"

}

​

#find_fallback_template(pfx, name, sfx, order)

find_fallback_template()

{

    local pfx="$1"; shift

    local name="$1"; shift

    local sfx="$1"; shift

    local order="$1"; shift

​

    local base=""

    local file=""

​

    # We may have fallbacks for a specific case (e.g. read_acquire()), or

    # an entire class, e.g. *inc*().

    #

    # Start at the most specific, and fall back to the most general. Once

    # we find a specific fallback, don't bother looking for more.

    for base in "${pfx}${name}${sfx}${order}" "${name}"; do

        file="${ATOMICDIR}/fallbacks/${base}"

​

        if [ -f "${file}" ]; then

            printf "${file}"

            break

        fi

    done

}

​

#gen_ret_type(meta, int)

gen_ret_type() {

    local meta="$1"; shift

    local int="$1"; shift

​

    case "${meta}" in

    [sv]) printf "void";;

    [bB]) printf "bool";;

    [aiIfFlR]) printf "${int}";;

    esac

}

​

#gen_ret_stmt(meta)

gen_ret_stmt()

{

    if meta_has_ret "${meta}"; then

        printf "return ";

    fi

}

​

# gen_param_name(arg)

gen_param_name()

{

    # strip off the leading 'c' for 'cv'

    local name="${1#c}"

    printf "${name#*:}"

}

​