673 lines
17 KiB
C
673 lines
17 KiB
C
/******************************************************************************
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*
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* Module Name: dmextern - Support for External() ASL statements
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2011, Intel Corp.
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* All rights reserved.
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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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* Alternatively, this software may be distributed 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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* NO WARRANTY
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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 MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "acpi.h"
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#include "accommon.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#include "acdisasm.h"
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/*
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* This module is used for application-level code (iASL disassembler) only.
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*
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* It contains the code to create and emit any necessary External() ASL
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* statements for the module being disassembled.
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*/
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#define _COMPONENT ACPI_CA_DISASSEMBLER
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ACPI_MODULE_NAME ("dmextern")
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/*
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* This table maps ACPI_OBJECT_TYPEs to the corresponding ASL
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* ObjectTypeKeyword. Used to generate typed external declarations
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*/
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static const char *AcpiGbl_DmTypeNames[] =
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{
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/* 00 */ "", /* Type ANY */
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/* 01 */ ", IntObj",
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/* 02 */ ", StrObj",
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/* 03 */ ", BuffObj",
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/* 04 */ ", PkgObj",
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/* 05 */ ", FieldUnitObj",
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/* 06 */ ", DeviceObj",
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/* 07 */ ", EventObj",
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/* 08 */ ", MethodObj",
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/* 09 */ ", MutexObj",
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/* 10 */ ", OpRegionObj",
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/* 11 */ ", PowerResObj",
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/* 12 */ ", ProcessorObj",
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/* 13 */ ", ThermalZoneObj",
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/* 14 */ ", BuffFieldObj",
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/* 15 */ ", DDBHandleObj",
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/* 16 */ "", /* Debug object */
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/* 17 */ ", FieldUnitObj",
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/* 18 */ ", FieldUnitObj",
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/* 19 */ ", FieldUnitObj"
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};
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/* Local prototypes */
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static const char *
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AcpiDmGetObjectTypeName (
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ACPI_OBJECT_TYPE Type);
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static char *
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AcpiDmNormalizeParentPrefix (
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ACPI_PARSE_OBJECT *Op,
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char *Path);
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmGetObjectTypeName
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*
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* PARAMETERS: Type - An ACPI_OBJECT_TYPE
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*
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* RETURN: Pointer to a string
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*
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* DESCRIPTION: Map an object type to the ASL object type string.
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*
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******************************************************************************/
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static const char *
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AcpiDmGetObjectTypeName (
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ACPI_OBJECT_TYPE Type)
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{
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if (Type == ACPI_TYPE_LOCAL_SCOPE)
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{
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Type = ACPI_TYPE_DEVICE;
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}
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else if (Type > ACPI_TYPE_LOCAL_INDEX_FIELD)
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{
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return ("");
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}
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return (AcpiGbl_DmTypeNames[Type]);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmNormalizeParentPrefix
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*
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* PARAMETERS: Op - Parse op
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* Path - Path with parent prefix
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*
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* RETURN: The full pathname to the object (from the namespace root)
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*
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* DESCRIPTION: Returns the full pathname of a path with parent prefix
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* The caller must free the fullpath returned.
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*
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******************************************************************************/
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static char *
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AcpiDmNormalizeParentPrefix (
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ACPI_PARSE_OBJECT *Op,
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char *Path)
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{
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ACPI_NAMESPACE_NODE *Node;
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char *Fullpath;
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char *ParentPath;
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ACPI_SIZE Length;
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/* Search upwards in the parse tree until we reach a namespace node */
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while (Op)
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{
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if (Op->Common.Node)
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{
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break;
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}
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Op = Op->Common.Parent;
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}
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if (!Op)
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{
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return (NULL);
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}
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/*
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* Find the actual parent node for the reference:
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* Remove all carat prefixes from the input path.
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* There may be multiple parent prefixes (For example, ^^^M000)
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*/
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Node = Op->Common.Node;
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while (Node && (*Path == (UINT8) AML_PARENT_PREFIX))
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{
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Node = Node->Parent;
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Path++;
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}
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if (!Node)
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{
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return (NULL);
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}
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/* Get the full pathname for the parent node */
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ParentPath = AcpiNsGetExternalPathname (Node);
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if (!ParentPath)
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{
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return (NULL);
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}
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Length = (ACPI_STRLEN (ParentPath) + ACPI_STRLEN (Path) + 1);
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if (ParentPath[1])
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{
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/*
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* If ParentPath is not just a simple '\', increment the length
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* for the required dot separator (ParentPath.Path)
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*/
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Length++;
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}
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Fullpath = ACPI_ALLOCATE_ZEROED (Length);
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if (!Fullpath)
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{
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goto Cleanup;
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}
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/*
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* Concatenate parent fullpath and path. For example,
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* parent fullpath "\_SB_", Path "^INIT", Fullpath "\_SB_.INIT"
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*
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* Copy the parent path
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*/
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ACPI_STRCAT (Fullpath, ParentPath);
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/* Add dot separator (don't need dot if parent fullpath is a single "\") */
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if (ParentPath[1])
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{
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ACPI_STRCAT (Fullpath, ".");
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}
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/* Copy child path (carat parent prefix(es) were skipped above) */
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ACPI_STRCAT (Fullpath, Path);
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Cleanup:
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ACPI_FREE (ParentPath);
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return (Fullpath);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmAddToExternalFileList
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*
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* PARAMETERS: PathList - Single path or list separated by comma
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*
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* RETURN: None
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*
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* DESCRIPTION: Add external files to global list
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDmAddToExternalFileList (
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char *PathList)
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{
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ACPI_EXTERNAL_FILE *ExternalFile;
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char *Path;
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char *TmpPath;
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if (!PathList)
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{
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return (AE_OK);
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}
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Path = strtok (PathList, ",");
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while (Path)
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{
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TmpPath = ACPI_ALLOCATE_ZEROED (ACPI_STRLEN (Path) + 1);
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if (!TmpPath)
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{
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return (AE_NO_MEMORY);
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}
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ACPI_STRCPY (TmpPath, Path);
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ExternalFile = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_FILE));
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if (!ExternalFile)
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{
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ACPI_FREE (TmpPath);
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return (AE_NO_MEMORY);
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}
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ExternalFile->Path = TmpPath;
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if (AcpiGbl_ExternalFileList)
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{
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ExternalFile->Next = AcpiGbl_ExternalFileList;
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}
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AcpiGbl_ExternalFileList = ExternalFile;
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Path = strtok (NULL, ",");
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmClearExternalFileList
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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: Clear the external file list
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*
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******************************************************************************/
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void
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AcpiDmClearExternalFileList (
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void)
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{
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ACPI_EXTERNAL_FILE *NextExternal;
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while (AcpiGbl_ExternalFileList)
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{
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NextExternal = AcpiGbl_ExternalFileList->Next;
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ACPI_FREE (AcpiGbl_ExternalFileList->Path);
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ACPI_FREE (AcpiGbl_ExternalFileList);
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AcpiGbl_ExternalFileList = NextExternal;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmAddToExternalList
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*
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* PARAMETERS: Op - Current parser Op
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* Path - Internal (AML) path to the object
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* Type - ACPI object type to be added
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* Value - Arg count if adding a Method object
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*
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* RETURN: None
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*
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* DESCRIPTION: Insert a new name into the global list of Externals which
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* will in turn be later emitted as an External() declaration
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* in the disassembled output.
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*
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******************************************************************************/
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void
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AcpiDmAddToExternalList (
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ACPI_PARSE_OBJECT *Op,
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char *Path,
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UINT8 Type,
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UINT32 Value)
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{
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char *ExternalPath;
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char *Fullpath = NULL;
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ACPI_EXTERNAL_LIST *NewExternal;
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ACPI_EXTERNAL_LIST *NextExternal;
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ACPI_EXTERNAL_LIST *PrevExternal = NULL;
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ACPI_STATUS Status;
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if (!Path)
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{
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return;
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}
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/* Externalize the ACPI path */
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Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
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NULL, &ExternalPath);
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if (ACPI_FAILURE (Status))
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{
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return;
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}
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/* Get the full pathname from root if "Path" has a parent prefix */
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if (*Path == (UINT8) AML_PARENT_PREFIX)
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{
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Fullpath = AcpiDmNormalizeParentPrefix (Op, ExternalPath);
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if (Fullpath)
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{
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/* Set new external path */
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ACPI_FREE (ExternalPath);
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ExternalPath = Fullpath;
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}
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}
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/* Check all existing externals to ensure no duplicates */
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NextExternal = AcpiGbl_ExternalList;
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while (NextExternal)
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{
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if (!ACPI_STRCMP (ExternalPath, NextExternal->Path))
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{
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/* Duplicate method, check that the Value (ArgCount) is the same */
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if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
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(NextExternal->Value != Value))
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{
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ACPI_ERROR ((AE_INFO,
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"Argument count mismatch for method %s %u %u",
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NextExternal->Path, NextExternal->Value, Value));
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}
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/* Allow upgrade of type from ANY */
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else if (NextExternal->Type == ACPI_TYPE_ANY)
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{
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NextExternal->Type = Type;
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NextExternal->Value = Value;
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}
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ACPI_FREE (ExternalPath);
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return;
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}
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NextExternal = NextExternal->Next;
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}
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/* Allocate and init a new External() descriptor */
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NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
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if (!NewExternal)
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{
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ACPI_FREE (ExternalPath);
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return;
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}
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NewExternal->Path = ExternalPath;
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NewExternal->Type = Type;
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NewExternal->Value = Value;
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NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath);
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/* Was the external path with parent prefix normalized to a fullpath? */
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if (Fullpath == ExternalPath)
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{
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/* Get new internal path */
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Status = AcpiNsInternalizeName (ExternalPath, &Path);
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if (ACPI_FAILURE (Status))
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{
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ACPI_FREE (ExternalPath);
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ACPI_FREE (NewExternal);
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return;
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}
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/* Set flag to indicate External->InternalPath need to be freed */
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NewExternal->Flags |= ACPI_IPATH_ALLOCATED;
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}
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NewExternal->InternalPath = Path;
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/* Link the new descriptor into the global list, ordered by string length */
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NextExternal = AcpiGbl_ExternalList;
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while (NextExternal)
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{
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if (NewExternal->Length <= NextExternal->Length)
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{
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if (PrevExternal)
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{
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PrevExternal->Next = NewExternal;
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}
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else
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{
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AcpiGbl_ExternalList = NewExternal;
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}
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NewExternal->Next = NextExternal;
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return;
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}
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PrevExternal = NextExternal;
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NextExternal = NextExternal->Next;
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}
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if (PrevExternal)
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{
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PrevExternal->Next = NewExternal;
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}
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else
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{
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AcpiGbl_ExternalList = NewExternal;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmAddExternalsToNamespace
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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: Add all externals to the namespace. Allows externals to be
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* "resolved".
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*
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******************************************************************************/
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void
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AcpiDmAddExternalsToNamespace (
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void)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_OPERAND_OBJECT *MethodDesc;
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ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
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while (External)
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{
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/* Add the external name (object) into the namespace */
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Status = AcpiNsLookup (NULL, External->InternalPath, External->Type,
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ACPI_IMODE_LOAD_PASS1,
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ACPI_NS_EXTERNAL | ACPI_NS_DONT_OPEN_SCOPE,
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NULL, &Node);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"while adding external to namespace [%s]",
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External->Path));
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}
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else if (External->Type == ACPI_TYPE_METHOD)
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{
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/* For methods, we need to save the argument count */
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MethodDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
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MethodDesc->Method.ParamCount = (UINT8) External->Value;
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Node->Object = MethodDesc;
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}
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External = External->Next;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmGetExternalMethodCount
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*
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* PARAMETERS: None
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*
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* RETURN: The number of control method externals in the external list
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*
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* DESCRIPTION: Return the number of method externals that have been generated.
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* If any control method externals have been found, we must
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* re-parse the entire definition block with the new information
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* (number of arguments for the methods.) This is limitation of
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* AML, we don't know the number of arguments from the control
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* method invocation itself.
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*
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******************************************************************************/
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UINT32
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AcpiDmGetExternalMethodCount (
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void)
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{
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ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
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UINT32 Count = 0;
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while (External)
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{
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if (External->Type == ACPI_TYPE_METHOD)
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{
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Count++;
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}
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External = External->Next;
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}
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return (Count);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmClearExternalList
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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: Free the entire External info list
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*
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******************************************************************************/
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void
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AcpiDmClearExternalList (
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void)
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{
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ACPI_EXTERNAL_LIST *NextExternal;
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while (AcpiGbl_ExternalList)
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{
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NextExternal = AcpiGbl_ExternalList->Next;
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ACPI_FREE (AcpiGbl_ExternalList->Path);
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ACPI_FREE (AcpiGbl_ExternalList);
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AcpiGbl_ExternalList = NextExternal;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmEmitExternals
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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: Emit an External() ASL statement for each of the externals in
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* the global external info list.
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*
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******************************************************************************/
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void
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AcpiDmEmitExternals (
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void)
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{
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ACPI_EXTERNAL_LIST *NextExternal;
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if (!AcpiGbl_ExternalList)
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{
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return;
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}
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/*
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* Walk the list of externals (unresolved references)
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* found during the AML parsing
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*/
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while (AcpiGbl_ExternalList)
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{
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AcpiOsPrintf (" External (%s%s",
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AcpiGbl_ExternalList->Path,
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AcpiDmGetObjectTypeName (AcpiGbl_ExternalList->Type));
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if (AcpiGbl_ExternalList->Type == ACPI_TYPE_METHOD)
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{
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AcpiOsPrintf (") // %u Arguments\n",
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AcpiGbl_ExternalList->Value);
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}
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else
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{
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AcpiOsPrintf (")\n");
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}
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/* Free this external info block and move on to next external */
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NextExternal = AcpiGbl_ExternalList->Next;
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if (AcpiGbl_ExternalList->Flags & ACPI_IPATH_ALLOCATED)
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{
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ACPI_FREE (AcpiGbl_ExternalList->InternalPath);
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}
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ACPI_FREE (AcpiGbl_ExternalList->Path);
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ACPI_FREE (AcpiGbl_ExternalList);
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AcpiGbl_ExternalList = NextExternal;
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}
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AcpiOsPrintf ("\n");
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}
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