mirror of https://github.com/F-Stack/f-stack.git
242 lines
6.6 KiB
C
242 lines
6.6 KiB
C
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/******************************************************************************
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*
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* Module Name: aslprune - Parse tree prune utility
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2016, 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 <contrib/dev/acpica/compiler/aslcompiler.h>
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#include "aslcompiler.y.h"
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#include <contrib/dev/acpica/include/acapps.h>
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslprune")
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/* Local prototypes */
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static ACPI_STATUS
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PrTreePruneWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static void
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PrPrintObjectAtLevel (
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UINT32 Level,
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const char *ObjectName);
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/* Structure used for the pruning parse tree walk */
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typedef struct acpi_prune_info
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{
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UINT32 PruneLevel;
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UINT16 ParseOpcode;
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UINT16 Count;
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} ACPI_PRUNE_INFO;
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/*******************************************************************************
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*
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* FUNCTION: AslPruneParseTree
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*
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* PARAMETERS: PruneDepth - Number of levels to prune
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* Type - Prune type (Device, Method, etc.)
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*
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* RETURN: None
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*
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* DESCRIPTION: Prune off one or more levels of the ASL parse tree
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*
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******************************************************************************/
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void
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AslPruneParseTree (
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UINT32 PruneDepth,
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UINT32 Type)
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{
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ACPI_PRUNE_INFO PruneObj;
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PruneObj.PruneLevel = PruneDepth;
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PruneObj.Count = 0;
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switch (Type)
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{
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case 0:
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PruneObj.ParseOpcode = (UINT16) PARSEOP_DEVICE;
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break;
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case 1:
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PruneObj.ParseOpcode = (UINT16) PARSEOP_METHOD;
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break;
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case 2:
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PruneObj.ParseOpcode = (UINT16) PARSEOP_IF;
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break;
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default:
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AcpiOsPrintf ("Unsupported type: %u\n", Type);
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return;
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}
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AcpiOsPrintf ("Pruning parse tree, from depth %u\n",
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PruneDepth);
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AcpiOsPrintf ("\nRemoving Objects:\n");
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TrWalkParseTree (Gbl_ParseTreeRoot, ASL_WALK_VISIT_DOWNWARD,
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PrTreePruneWalk, NULL, ACPI_CAST_PTR (void, &PruneObj));
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AcpiOsPrintf ("\n%u Total Objects Removed\n", PruneObj.Count);
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}
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/*******************************************************************************
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*
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* FUNCTION: PrPrintObjectAtLevel
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*
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* PARAMETERS: Level - Current nesting level
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* ObjectName - ACPI name for the object
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*
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* RETURN: None
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*
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* DESCRIPTION: Print object name with indent
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*
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******************************************************************************/
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static void
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PrPrintObjectAtLevel (
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UINT32 Level,
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const char *ObjectName)
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{
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UINT32 i;
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for (i = 0; i < Level; i++)
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{
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AcpiOsPrintf (" ");
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}
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AcpiOsPrintf ("[%s] at Level [%u]\n", ObjectName, Level);
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}
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/*******************************************************************************
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*
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* FUNCTION: PrTreePruneWalk
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*
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* PARAMETERS: Parse tree walk callback
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*
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* RETURN: Status
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*
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* DESCRIPTION: Prune off one or more levels of the ASL parse tree
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*
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* Current objects that can be pruned are: Devices, Methods, and If/Else
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* blocks.
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*
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******************************************************************************/
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static ACPI_STATUS
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PrTreePruneWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context)
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{
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ACPI_PRUNE_INFO *PruneObj = (ACPI_PRUNE_INFO *) Context;
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/* We only care about objects below the Prune Level threshold */
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if (Level <= PruneObj->PruneLevel)
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{
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return (AE_OK);
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}
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if ((Op->Asl.ParseOpcode != PruneObj->ParseOpcode) &&
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!(Op->Asl.ParseOpcode == PARSEOP_ELSE &&
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PruneObj->ParseOpcode == PARSEOP_IF))
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{
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return (AE_OK);
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}
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switch (Op->Asl.ParseOpcode)
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{
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case PARSEOP_METHOD:
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AcpiOsPrintf ("Method");
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PrPrintObjectAtLevel (Level, Op->Asl.Child->Asl.Value.Name);
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Op->Asl.Child->Asl.Next->Asl.Next->Asl.Next->Asl.Next->Asl.Next->Asl.Next = NULL;
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PruneObj->Count++;
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break;
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case PARSEOP_DEVICE:
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AcpiOsPrintf ("Device");
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PrPrintObjectAtLevel (Level, Op->Asl.Child->Asl.Value.Name);
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Op->Asl.Child->Asl.Next = NULL;
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PruneObj->Count++;
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break;
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case PARSEOP_IF:
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case PARSEOP_ELSE:
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if (Op->Asl.ParseOpcode == PARSEOP_ELSE)
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{
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PrPrintObjectAtLevel(Level, "Else");
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Op->Asl.Child = NULL;
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}
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else
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{
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PrPrintObjectAtLevel(Level, "If");
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Op->Asl.Child->Asl.Next = NULL;
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}
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PruneObj->Count++;
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break;
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default:
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break;
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}
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return (AE_OK);
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}
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