453 lines
16 KiB
C
453 lines
16 KiB
C
/******************************************************************************
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*
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* Module Name: aeexception - Exception and signal handlers
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************
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*
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* Alternatively, you may choose to be licensed under the terms of the
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* following license:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Alternatively, you may choose to be licensed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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*****************************************************************************/
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#include "aecommon.h"
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#define _COMPONENT ACPI_TOOLS
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ACPI_MODULE_NAME ("aeexception")
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/* Local prototypes */
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static void
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AeDisplayMethodCallStack (
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void);
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/******************************************************************************
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*
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* FUNCTION: AeExceptionHandler
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*
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* PARAMETERS: Standard exception handler parameters
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*
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* RETURN: Status
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*
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* DESCRIPTION: System exception handler for AcpiExec utility. Called from
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* the core ACPICA code after any exception during method
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* execution.
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*
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*****************************************************************************/
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ACPI_STATUS
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AeExceptionHandler (
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ACPI_STATUS AmlStatus,
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ACPI_NAME Name,
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UINT16 Opcode,
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UINT32 AmlOffset,
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void *Context)
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{
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ACPI_STATUS NewAmlStatus = AmlStatus;
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ACPI_STATUS Status;
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ACPI_BUFFER ReturnObj;
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ACPI_OBJECT_LIST ArgList;
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ACPI_OBJECT Arg[3];
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const char *Exception;
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ACPI_HANDLE ErrHandle;
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Exception = AcpiFormatException (AmlStatus);
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AcpiOsPrintf (AE_PREFIX
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"Exception %s during execution\n", Exception);
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if (Name)
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{
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if (ACPI_COMPARE_NAME (&Name, ACPI_ROOT_PATHNAME))
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{
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AcpiOsPrintf (AE_PREFIX
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"Evaluating executable code at [%s]\n", ACPI_NAMESPACE_ROOT);
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}
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else
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{
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AcpiOsPrintf (AE_PREFIX
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"Evaluating Method or Node: [%4.4s]\n", (char *) &Name);
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}
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}
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/* Be terse about loop timeouts */
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if ((AmlStatus == AE_AML_LOOP_TIMEOUT) && AcpiGbl_AbortLoopOnTimeout)
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{
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AcpiOsPrintf (AE_PREFIX "Aborting loop after timeout\n");
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return (AE_OK);
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}
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AcpiOsPrintf ("\n" AE_PREFIX
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"AML Opcode [%s], Method Offset ~%5.5X\n",
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AcpiPsGetOpcodeName (Opcode), AmlOffset);
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/* Invoke the _ERR method if present */
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Status = AcpiGetHandle (NULL, "\\_ERR", &ErrHandle);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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/* Setup parameter object */
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ArgList.Count = 3;
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ArgList.Pointer = Arg;
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Arg[0].Type = ACPI_TYPE_INTEGER;
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Arg[0].Integer.Value = AmlStatus;
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Arg[1].Type = ACPI_TYPE_STRING;
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Arg[1].String.Pointer = ACPI_CAST_PTR (char, Exception);
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Arg[1].String.Length = strlen (Exception);
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Arg[2].Type = ACPI_TYPE_INTEGER;
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Arg[2].Integer.Value = AcpiOsGetThreadId();
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/* Setup return buffer */
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ReturnObj.Pointer = NULL;
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ReturnObj.Length = ACPI_ALLOCATE_BUFFER;
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Status = AcpiEvaluateObject (ErrHandle, NULL, &ArgList, &ReturnObj);
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if (ACPI_SUCCESS (Status))
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{
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if (ReturnObj.Pointer)
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{
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/* Override original status */
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NewAmlStatus = (ACPI_STATUS)
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((ACPI_OBJECT *) ReturnObj.Pointer)->Integer.Value;
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/* Free a buffer created via ACPI_ALLOCATE_BUFFER */
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AcpiOsFree (ReturnObj.Pointer);
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}
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}
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else if (Status != AE_NOT_FOUND)
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{
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AcpiOsPrintf (AE_PREFIX
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"Could not execute _ERR method, %s\n",
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AcpiFormatException (Status));
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}
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Cleanup:
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if (AcpiGbl_IgnoreErrors)
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{
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/* Global option to ignore all method errors, just return OK */
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NewAmlStatus = AE_OK;
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}
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if (NewAmlStatus != AmlStatus)
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{
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/* Request to override actual status with a different status */
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AcpiOsPrintf (AE_PREFIX
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"Exception override, new status %s\n\n",
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AcpiFormatException (NewAmlStatus));
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}
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return (NewAmlStatus);
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}
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/******************************************************************************
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*
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* FUNCTION: AeSignalHandler
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*
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* PARAMETERS: Sig
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*
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* RETURN: none
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*
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* DESCRIPTION: Master signal handler. Currently handles SIGINT (ctrl-c),
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* and SIGSEGV (Segment violation).
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*
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*****************************************************************************/
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void ACPI_SYSTEM_XFACE
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AeSignalHandler (
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int Sig)
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{
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fflush(stdout);
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AcpiOsPrintf ("\n" AE_PREFIX);
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switch (Sig)
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{
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case SIGINT:
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signal(Sig, SIG_IGN);
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AcpiOsPrintf ("<Control-C>\n");
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/* Abort the application if there are no methods executing */
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if (!AcpiGbl_MethodExecuting)
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{
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break;
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}
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/*
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* Abort the method(s). This will also dump the method call
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* stack so there is no need to do it here. The application
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* will then drop back into the debugger interface.
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*/
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AcpiGbl_AbortMethod = TRUE;
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AcpiOsPrintf (AE_PREFIX "Control Method Call Stack:\n");
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signal (SIGINT, AeSignalHandler);
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return;
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case SIGSEGV:
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AcpiOsPrintf ("Segmentation Fault\n");
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AeDisplayMethodCallStack ();
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break;
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default:
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AcpiOsPrintf ("Unknown Signal, %X\n", Sig);
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break;
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}
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/* Terminate application -- cleanup then exit */
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AcpiOsPrintf (AE_PREFIX "Terminating\n");
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(void) AcpiOsTerminate ();
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exit (0);
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}
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/******************************************************************************
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*
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* FUNCTION: AeDisplayMethodCallStack
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Display current method call stack, if possible.
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*
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* NOTE: Currently only called from a SIGSEGV, so AcpiExec is about
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* to terminate.
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*
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*****************************************************************************/
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static void
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AeDisplayMethodCallStack (
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void)
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{
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ACPI_WALK_STATE *WalkState;
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ACPI_THREAD_STATE *ThreadList = AcpiGbl_CurrentWalkList;
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char *FullPathname = NULL;
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if (!AcpiGbl_MethodExecuting)
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{
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AcpiOsPrintf (AE_PREFIX "No method is executing\n");
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return;
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}
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/*
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* Try to find the currently executing control method(s)
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*
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* Note: The following code may fault if the data structures are
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* in an indeterminate state when the interrupt occurs. However,
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* in practice, this works quite well and can provide very
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* valuable information.
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*
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* 1) Walk the global thread list
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*/
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while (ThreadList &&
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(ThreadList->DescriptorType == ACPI_DESC_TYPE_STATE_THREAD))
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{
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/* 2) Walk the walk state list for this thread */
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WalkState = ThreadList->WalkStateList;
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while (WalkState &&
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(WalkState->DescriptorType == ACPI_DESC_TYPE_WALK))
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{
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/* An executing control method */
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if (WalkState->MethodNode)
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{
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FullPathname = AcpiNsGetExternalPathname (
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WalkState->MethodNode);
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AcpiOsPrintf (AE_PREFIX
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"Executing Method: %s\n", FullPathname);
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}
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/* Execution of a deferred opcode/node */
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if (WalkState->DeferredNode)
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{
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FullPathname = AcpiNsGetExternalPathname (
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WalkState->DeferredNode);
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AcpiOsPrintf (AE_PREFIX
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"Evaluating deferred node: %s\n", FullPathname);
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}
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/* Get the currently executing AML opcode */
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if ((WalkState->Opcode != AML_INT_METHODCALL_OP) &&
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FullPathname)
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{
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AcpiOsPrintf (AE_PREFIX
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"Current AML Opcode in %s: [%s]-0x%4.4X at %p\n",
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FullPathname, AcpiPsGetOpcodeName (WalkState->Opcode),
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WalkState->Opcode, WalkState->Aml);
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}
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if (FullPathname)
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{
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ACPI_FREE (FullPathname);
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FullPathname = NULL;
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}
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WalkState = WalkState->Next;
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}
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ThreadList = ThreadList->Next;
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}
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}
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