1.\" 2.\" Copyright (c) 2014 The DragonFly Project. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in 12.\" the documentation and/or other materials provided with the 13.\" distribution. 14.\" 3. Neither the name of The DragonFly Project nor the names of its 15.\" contributors may be used to endorse or promote products derived 16.\" from this software without specific, prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 24.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 28.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.Dd April 10, 2014 32.Dt ACPIHELP 8 33.Os 34.Sh NAME 35.Nm acpihelp 36.Nd help utility for ASL operators, AML opcodes, and ACPI predefined names 37.Sh SYNOPSIS 38.Nm 39.Op Ar option ... 40.Op Ar name_prefix | hex_value 41.Sh DESCRIPTION 42The following options are supported: 43.Bl -tag -width indent 44.It Fl e Op Ar hex_value 45Decode ACPICA exception code. 46.It Fl h 47Display help. 48.It Fl i 49Display known ACPI Device IDs (_HID). 50.It Fl k Op Ar name_prefix 51Find/Display ASL non-operator keyword(s). 52.It Fl m Op Ar name_prefix 53Find/Display AML opcode name(s). 54.It Fl o Op Ar hex_value 55Decode hex AML opcode. 56.It Fl p Op Ar name_prefix 57Find/Display ASL predefined method name(s). 58.It Fl s Op Ar name_prefix 59Find/Display ASL operator name(s). 60.It Fl v 61Display version information. 62.El 63.Pp 64If neither 65.Ar name_prefix 66nor 67.Ar hex_value 68are specified 69.Nm 70defaults to displaying all information available for the specified option. 71.Pp 72If a 73.Ar name_prefix 74but no options are specified 75.Nm 76defaults to finding ASL operator names if 77.Ar name_prefix 78does not start with an underscore, and to finding ASL predefined method 79names if 80.Ar name_prefix 81does start with an underscore. 82.Sh SEE ALSO 83.Xr acpi 4 , 84.Xr acpibin 8 , 85.Xr acpiconf 8 , 86.Xr acpidump 8 , 87.Xr acpiexec 8 , 88.Xr acpinames 8 , 89.Xr acpixtract 8 , 90.Xr iasl 8 91.Pp 92.Lk https://acpica.org/documentation/ 93.Sh AUTHORS 94The 95.Nm 96utility is provided by 97.Tn Intel 98as part of their 99.Sy ACPICA 100distribution. 101.Pp 102This manual page was written by 103.An Sascha Wildner . 104