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 November 15, 2020 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 a Op Ar name/prefix | * 45Display both ASL operator and AML opcode name(s). 46.It Fl d 47Display iASL Preprocessor directives. 48.It Fl e Op Ar hex_value 49Decode ACPICA exception code. 50.It Fl g Op Ar name/prefix | * 51Display AML grammar element(s). 52.It Fl h 53Display help. 54.It Fl i Op Ar name/prefix | * 55Display ACPI/PNP Hardware ID(s). 56.It Fl k Op Ar name/prefix | * 57Display ASL non-operator keyword(s). 58.It Fl m Op Ar name/prefix | * 59Display AML opcode name(s). 60.It Fl o Op Ar hex_value 61Decode hex AML opcode. 62.It Fl p Op Ar name/prefix | * 63Display ASL predefined method name(s). 64.It Fl s Op Ar name/prefix | * 65Display ASL operator name(s). 66.It Fl t 67Display supported ACPI tables. 68.It Fl u 69Display ACPI-related UUIDs. 70.It Fl v 71Display version information. 72.It Fl vd 73Display build date and time. 74.It Fl x Op Ar hex_value 75Decode iASL exception code. 76.El 77.Pp 78If neither 79.Ar name/prefix 80nor 81.Ar hex_value 82are specified 83.Nm 84defaults to displaying all information available for the specified option. 85.Pp 86If a 87.Ar name/prefix 88but no options are specified 89.Nm 90defaults to finding ASL operator names if 91.Ar name/prefix 92does not start with an underscore, and to finding ASL predefined method 93names if 94.Ar name/prefix 95does start with an underscore. 96.Sh SEE ALSO 97.Xr acpi 4 , 98.Xr acpibin 8 , 99.Xr acpicall 8 , 100.Xr acpiconf 8 , 101.Xr acpidump 8 , 102.Xr acpiexec 8 , 103.Xr acpixtract 8 , 104.Xr iasl 8 105.Pp 106.Lk https://acpica.org/documentation/ 107.Sh AUTHORS 108The 109.Nm 110utility is provided by 111.Tn Intel 112as part of their 113.Sy ACPICA 114distribution. 115.Pp 116This manual page was written by 117.An Sascha Wildner . 118