get_methods

#!/bin/sh
# Usage: ./get_methods [acpiexec options] dsdt.dat ssdt1.dat ... > methods.txt
# When ran without parameters, it will read all .dat files from the current
# directory and store a list of methods in methods.txt
# A useful acpiexec option is "-di", this prevents _INI from being called and
# should be used when get_method appears to hang (acpiexec is then looping and
# sleeping).
#
# Requires `acpiexec` from ACPICA to be installed.

has_file=false
for arg; do
	case $arg in
	-*) ;;
	*)
		has_file=true
		break
		;;
	esac
done

output=
if ! $has_file; then
	set -- "$@" *.dat
	output=methods.txt
fi
{
	acpiexec -b methods "$@" | awk '/^$/{s=0};s==1{print $1};/^Objects of type \[Method\]/{s=1}'
	[ -z "$ALL" ] || acpiexec -b Predefined "$@" | awk '/^\\/{print $1}'
} | sort -u | {
	[ -n "$output" ] && tee "$output" >/dev/null || cat
}