693 lines
21 KiB
C
693 lines
21 KiB
C
/******************************************************************************
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*
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* Module Name: aslwalks.c - Miscellaneous analytical parse tree walks
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2015, 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/acparser.h>
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#include <contrib/dev/acpica/include/amlcode.h>
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslwalks")
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/*******************************************************************************
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*
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* FUNCTION: AnMethodTypingWalkEnd
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Ascending callback for typing walk. Complete the method
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* return analysis. Check methods for:
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* 1) Initialized local variables
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* 2) Valid arguments
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* 3) Return types
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*
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******************************************************************************/
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ACPI_STATUS
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AnMethodTypingWalkEnd (
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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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UINT32 ThisNodeBtype;
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switch (Op->Asl.ParseOpcode)
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{
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case PARSEOP_METHOD:
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Op->Asl.CompileFlags |= NODE_METHOD_TYPED;
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break;
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case PARSEOP_RETURN:
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if ((Op->Asl.Child) &&
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(Op->Asl.Child->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG))
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{
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ThisNodeBtype = AnGetBtype (Op->Asl.Child);
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if ((Op->Asl.Child->Asl.ParseOpcode == PARSEOP_METHODCALL) &&
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(ThisNodeBtype == (ACPI_UINT32_MAX -1)))
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{
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/*
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* The called method is untyped at this time (typically a
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* forward reference).
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*
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* Check for a recursive method call first.
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*/
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if (Op->Asl.ParentMethod != Op->Asl.Child->Asl.Node->Op)
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{
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/* We must type the method here */
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TrWalkParseTree (Op->Asl.Child->Asl.Node->Op,
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ASL_WALK_VISIT_UPWARD, NULL,
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AnMethodTypingWalkEnd, NULL);
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ThisNodeBtype = AnGetBtype (Op->Asl.Child);
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}
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}
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/* Returns a value, save the value type */
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if (Op->Asl.ParentMethod)
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{
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Op->Asl.ParentMethod->Asl.AcpiBtype |= ThisNodeBtype;
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}
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}
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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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/*******************************************************************************
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*
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* FUNCTION: AnOperandTypecheckWalkEnd
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Ascending callback for analysis walk. Complete method
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* return analysis.
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*
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******************************************************************************/
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ACPI_STATUS
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AnOperandTypecheckWalkEnd (
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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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const ACPI_OPCODE_INFO *OpInfo;
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UINT32 RuntimeArgTypes;
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UINT32 RuntimeArgTypes2;
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UINT32 RequiredBtypes;
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UINT32 ThisNodeBtype;
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UINT32 CommonBtypes;
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UINT32 OpcodeClass;
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ACPI_PARSE_OBJECT *ArgOp;
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UINT32 ArgType;
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switch (Op->Asl.AmlOpcode)
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{
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case AML_RAW_DATA_BYTE:
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case AML_RAW_DATA_WORD:
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case AML_RAW_DATA_DWORD:
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case AML_RAW_DATA_QWORD:
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case AML_RAW_DATA_BUFFER:
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case AML_RAW_DATA_CHAIN:
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case AML_PACKAGE_LENGTH:
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case AML_UNASSIGNED_OPCODE:
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case AML_DEFAULT_ARG_OP:
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/* Ignore the internal (compiler-only) AML opcodes */
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return (AE_OK);
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default:
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break;
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}
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OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
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if (!OpInfo)
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{
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return (AE_OK);
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}
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ArgOp = Op->Asl.Child;
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RuntimeArgTypes = OpInfo->RuntimeArgs;
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OpcodeClass = OpInfo->Class;
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#ifdef ASL_ERROR_NAMED_OBJECT_IN_WHILE
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/*
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* Update 11/2008: In practice, we can't perform this check. A simple
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* analysis is not sufficient. Also, it can cause errors when compiling
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* disassembled code because of the way Switch operators are implemented
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* (a While(One) loop with a named temp variable created within.)
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*/
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/*
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* If we are creating a named object, check if we are within a while loop
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* by checking if the parent is a WHILE op. This is a simple analysis, but
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* probably sufficient for many cases.
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*
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* Allow Scope(), Buffer(), and Package().
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*/
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if (((OpcodeClass == AML_CLASS_NAMED_OBJECT) && (Op->Asl.AmlOpcode != AML_SCOPE_OP)) ||
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((OpcodeClass == AML_CLASS_CREATE) && (OpInfo->Flags & AML_NSNODE)))
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{
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if (Op->Asl.Parent->Asl.AmlOpcode == AML_WHILE_OP)
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{
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AslError (ASL_ERROR, ASL_MSG_NAMED_OBJECT_IN_WHILE, Op, NULL);
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}
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}
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#endif
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/*
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* Special case for control opcodes IF/RETURN/WHILE since they
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* have no runtime arg list (at this time)
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*/
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switch (Op->Asl.AmlOpcode)
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{
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case AML_IF_OP:
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case AML_WHILE_OP:
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case AML_RETURN_OP:
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if (ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL)
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{
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/* Check for an internal method */
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if (AnIsInternalMethod (ArgOp))
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{
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return (AE_OK);
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}
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/* The lone arg is a method call, check it */
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RequiredBtypes = AnMapArgTypeToBtype (ARGI_INTEGER);
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if (Op->Asl.AmlOpcode == AML_RETURN_OP)
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{
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RequiredBtypes = 0xFFFFFFFF;
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}
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ThisNodeBtype = AnGetBtype (ArgOp);
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if (ThisNodeBtype == ACPI_UINT32_MAX)
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{
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return (AE_OK);
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}
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AnCheckMethodReturnValue (Op, OpInfo, ArgOp,
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RequiredBtypes, ThisNodeBtype);
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}
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return (AE_OK);
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case AML_EXTERNAL_OP:
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/*
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* Not really a "runtime" opcode since it used by disassembler only.
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* The parser will find any issues with the operands.
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*/
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return (AE_OK);
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default:
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break;
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}
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/* Ignore the non-executable opcodes */
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if (RuntimeArgTypes == ARGI_INVALID_OPCODE)
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{
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return (AE_OK);
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}
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switch (OpcodeClass)
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{
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case AML_CLASS_EXECUTE:
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case AML_CLASS_CREATE:
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case AML_CLASS_CONTROL:
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case AML_CLASS_RETURN_VALUE:
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/* TBD: Change class or fix typechecking for these */
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if ((Op->Asl.AmlOpcode == AML_BUFFER_OP) ||
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(Op->Asl.AmlOpcode == AML_PACKAGE_OP) ||
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(Op->Asl.AmlOpcode == AML_VAR_PACKAGE_OP))
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{
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break;
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}
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/* Reverse the runtime argument list */
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RuntimeArgTypes2 = 0;
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while ((ArgType = GET_CURRENT_ARG_TYPE (RuntimeArgTypes)))
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{
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RuntimeArgTypes2 <<= ARG_TYPE_WIDTH;
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RuntimeArgTypes2 |= ArgType;
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INCREMENT_ARG_LIST (RuntimeArgTypes);
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}
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while ((ArgType = GET_CURRENT_ARG_TYPE (RuntimeArgTypes2)))
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{
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RequiredBtypes = AnMapArgTypeToBtype (ArgType);
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if (!ArgOp)
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{
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AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
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"Null ArgOp in argument loop");
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AslAbort ();
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}
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ThisNodeBtype = AnGetBtype (ArgOp);
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if (ThisNodeBtype == ACPI_UINT32_MAX)
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{
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goto NextArgument;
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}
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/* Examine the arg based on the required type of the arg */
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switch (ArgType)
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{
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case ARGI_TARGETREF:
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if (ArgOp->Asl.ParseOpcode == PARSEOP_ZERO)
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{
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/* ZERO is the placeholder for "don't store result" */
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ThisNodeBtype = RequiredBtypes;
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break;
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}
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if (ArgOp->Asl.ParseOpcode == PARSEOP_INTEGER)
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{
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/*
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* This is the case where an original reference to a resource
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* descriptor field has been replaced by an (Integer) offset.
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* These named fields are supported at compile-time only;
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* the names are not passed to the interpreter (via the AML).
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*/
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if ((ArgOp->Asl.Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) ||
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(ArgOp->Asl.Node->Type == ACPI_TYPE_LOCAL_RESOURCE))
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{
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AslError (ASL_ERROR, ASL_MSG_RESOURCE_FIELD, ArgOp, NULL);
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}
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else
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{
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AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, NULL);
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}
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break;
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}
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if ((ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL) ||
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(ArgOp->Asl.ParseOpcode == PARSEOP_DEREFOF))
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{
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break;
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}
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ThisNodeBtype = RequiredBtypes;
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break;
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case ARGI_REFERENCE: /* References */
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case ARGI_INTEGER_REF:
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case ARGI_OBJECT_REF:
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case ARGI_DEVICE_REF:
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switch (ArgOp->Asl.ParseOpcode)
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{
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case PARSEOP_LOCAL0:
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case PARSEOP_LOCAL1:
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case PARSEOP_LOCAL2:
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case PARSEOP_LOCAL3:
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case PARSEOP_LOCAL4:
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case PARSEOP_LOCAL5:
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case PARSEOP_LOCAL6:
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case PARSEOP_LOCAL7:
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/* TBD: implement analysis of current value (type) of the local */
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/* For now, just treat any local as a typematch */
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/*ThisNodeBtype = RequiredBtypes;*/
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break;
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case PARSEOP_ARG0:
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case PARSEOP_ARG1:
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case PARSEOP_ARG2:
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case PARSEOP_ARG3:
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case PARSEOP_ARG4:
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case PARSEOP_ARG5:
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case PARSEOP_ARG6:
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/* Hard to analyze argument types, sow we won't */
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/* For now, just treat any arg as a typematch */
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/* ThisNodeBtype = RequiredBtypes; */
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break;
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case PARSEOP_DEBUG:
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case PARSEOP_REFOF:
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case PARSEOP_INDEX:
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default:
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break;
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}
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break;
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case ARGI_INTEGER:
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default:
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break;
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}
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CommonBtypes = ThisNodeBtype & RequiredBtypes;
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if (ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL)
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{
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if (AnIsInternalMethod (ArgOp))
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{
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return (AE_OK);
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}
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/* Check a method call for a valid return value */
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AnCheckMethodReturnValue (Op, OpInfo, ArgOp,
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RequiredBtypes, ThisNodeBtype);
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}
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/*
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* Now check if the actual type(s) match at least one
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* bit to the required type
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*/
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else if (!CommonBtypes)
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{
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/* No match -- this is a type mismatch error */
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AnFormatBtype (StringBuffer, ThisNodeBtype);
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AnFormatBtype (StringBuffer2, RequiredBtypes);
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sprintf (MsgBuffer, "[%s] found, %s operator requires [%s]",
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StringBuffer, OpInfo->Name, StringBuffer2);
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AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, MsgBuffer);
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}
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NextArgument:
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ArgOp = ArgOp->Asl.Next;
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INCREMENT_ARG_LIST (RuntimeArgTypes2);
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}
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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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/*******************************************************************************
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*
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* FUNCTION: AnOtherSemanticAnalysisWalkBegin
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Descending callback for the analysis walk. Checks for
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* miscellaneous issues in the code.
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*
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******************************************************************************/
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ACPI_STATUS
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AnOtherSemanticAnalysisWalkBegin (
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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_PARSE_OBJECT *ArgNode;
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ACPI_PARSE_OBJECT *PrevArgNode = NULL;
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const ACPI_OPCODE_INFO *OpInfo;
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ACPI_NAMESPACE_NODE *Node;
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OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
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/*
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* Determine if an execution class operator actually does something by
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* checking if it has a target and/or the function return value is used.
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* (Target is optional, so a standalone statement can actually do nothing.)
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*/
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if ((OpInfo->Class == AML_CLASS_EXECUTE) &&
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(OpInfo->Flags & AML_HAS_RETVAL) &&
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(!AnIsResultUsed (Op)))
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{
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if (OpInfo->Flags & AML_HAS_TARGET)
|
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{
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/*
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* Find the target node, it is always the last child. If the traget
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* is not specified in the ASL, a default node of type Zero was
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* created by the parser.
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*/
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ArgNode = Op->Asl.Child;
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while (ArgNode->Asl.Next)
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{
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PrevArgNode = ArgNode;
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ArgNode = ArgNode->Asl.Next;
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}
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|
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/* Divide() is the only weird case, it has two targets */
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|
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if (Op->Asl.AmlOpcode == AML_DIVIDE_OP)
|
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{
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if ((ArgNode->Asl.ParseOpcode == PARSEOP_ZERO) &&
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(PrevArgNode) &&
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(PrevArgNode->Asl.ParseOpcode == PARSEOP_ZERO))
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{
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AslError (ASL_ERROR, ASL_MSG_RESULT_NOT_USED,
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Op, Op->Asl.ExternalName);
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}
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}
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else if (ArgNode->Asl.ParseOpcode == PARSEOP_ZERO)
|
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{
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AslError (ASL_ERROR, ASL_MSG_RESULT_NOT_USED,
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Op, Op->Asl.ExternalName);
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}
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}
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else
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{
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/*
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* Has no target and the result is not used. Only a couple opcodes
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* can have this combination.
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*/
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switch (Op->Asl.ParseOpcode)
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{
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case PARSEOP_ACQUIRE:
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case PARSEOP_WAIT:
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case PARSEOP_LOADTABLE:
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break;
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default:
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AslError (ASL_ERROR, ASL_MSG_RESULT_NOT_USED,
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Op, Op->Asl.ExternalName);
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break;
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}
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}
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}
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|
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/*
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* Semantic checks for individual ASL operators
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*/
|
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switch (Op->Asl.ParseOpcode)
|
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{
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case PARSEOP_ACQUIRE:
|
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case PARSEOP_WAIT:
|
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/*
|
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* Emit a warning if the timeout parameter for these operators is not
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|
* ACPI_WAIT_FOREVER, and the result value from the operator is not
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* checked, meaning that a timeout could happen, but the code
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* would not know about it.
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*/
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/* First child is the namepath, 2nd child is timeout */
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ArgNode = Op->Asl.Child;
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ArgNode = ArgNode->Asl.Next;
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|
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/*
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* Check for the WAIT_FOREVER case - defined by the ACPI spec to be
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* 0xFFFF or greater
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*/
|
|
if (((ArgNode->Asl.ParseOpcode == PARSEOP_WORDCONST) ||
|
|
(ArgNode->Asl.ParseOpcode == PARSEOP_INTEGER)) &&
|
|
(ArgNode->Asl.Value.Integer >= (UINT64) ACPI_WAIT_FOREVER))
|
|
{
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* The operation could timeout. If the return value is not used
|
|
* (indicates timeout occurred), issue a warning
|
|
*/
|
|
if (!AnIsResultUsed (Op))
|
|
{
|
|
AslError (ASL_WARNING, ASL_MSG_TIMEOUT, ArgNode,
|
|
Op->Asl.ExternalName);
|
|
}
|
|
break;
|
|
|
|
case PARSEOP_CREATEFIELD:
|
|
/*
|
|
* Check for a zero Length (NumBits) operand. NumBits is the 3rd operand
|
|
*/
|
|
ArgNode = Op->Asl.Child;
|
|
ArgNode = ArgNode->Asl.Next;
|
|
ArgNode = ArgNode->Asl.Next;
|
|
|
|
if ((ArgNode->Asl.ParseOpcode == PARSEOP_ZERO) ||
|
|
((ArgNode->Asl.ParseOpcode == PARSEOP_INTEGER) &&
|
|
(ArgNode->Asl.Value.Integer == 0)))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_NON_ZERO, ArgNode, NULL);
|
|
}
|
|
break;
|
|
|
|
case PARSEOP_CONNECTION:
|
|
/*
|
|
* Ensure that the referenced operation region has the correct SPACE_ID.
|
|
* From the grammar/parser, we know the parent is a FIELD definition.
|
|
*/
|
|
ArgNode = Op->Asl.Parent; /* Field definition */
|
|
ArgNode = ArgNode->Asl.Child; /* First child is the OpRegion Name */
|
|
Node = ArgNode->Asl.Node; /* OpRegion namespace node */
|
|
if (!Node)
|
|
{
|
|
break;
|
|
}
|
|
|
|
ArgNode = Node->Op; /* OpRegion definition */
|
|
ArgNode = ArgNode->Asl.Child; /* First child is the OpRegion Name */
|
|
ArgNode = ArgNode->Asl.Next; /* Next peer is the SPACE_ID (what we want) */
|
|
|
|
/*
|
|
* The Connection() operator is only valid for the following operation
|
|
* region SpaceIds: GeneralPurposeIo and GenericSerialBus.
|
|
*/
|
|
if ((ArgNode->Asl.Value.Integer != ACPI_ADR_SPACE_GPIO) &&
|
|
(ArgNode->Asl.Value.Integer != ACPI_ADR_SPACE_GSBUS))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_CONNECTION_INVALID, Op, NULL);
|
|
}
|
|
break;
|
|
|
|
case PARSEOP_FIELD:
|
|
/*
|
|
* Ensure that fields for GeneralPurposeIo and GenericSerialBus
|
|
* contain at least one Connection() operator
|
|
*/
|
|
ArgNode = Op->Asl.Child; /* 1st child is the OpRegion Name */
|
|
Node = ArgNode->Asl.Node; /* OpRegion namespace node */
|
|
if (!Node)
|
|
{
|
|
break;
|
|
}
|
|
|
|
ArgNode = Node->Op; /* OpRegion definition */
|
|
ArgNode = ArgNode->Asl.Child; /* First child is the OpRegion Name */
|
|
ArgNode = ArgNode->Asl.Next; /* Next peer is the SPACE_ID (what we want) */
|
|
|
|
/* We are only interested in GeneralPurposeIo and GenericSerialBus */
|
|
|
|
if ((ArgNode->Asl.Value.Integer != ACPI_ADR_SPACE_GPIO) &&
|
|
(ArgNode->Asl.Value.Integer != ACPI_ADR_SPACE_GSBUS))
|
|
{
|
|
break;
|
|
}
|
|
|
|
ArgNode = Op->Asl.Child; /* 1st child is the OpRegion Name */
|
|
ArgNode = ArgNode->Asl.Next; /* AccessType */
|
|
ArgNode = ArgNode->Asl.Next; /* LockRule */
|
|
ArgNode = ArgNode->Asl.Next; /* UpdateRule */
|
|
ArgNode = ArgNode->Asl.Next; /* Start of FieldUnitList */
|
|
|
|
/* Walk the FieldUnitList */
|
|
|
|
while (ArgNode)
|
|
{
|
|
if (ArgNode->Asl.ParseOpcode == PARSEOP_CONNECTION)
|
|
{
|
|
break;
|
|
}
|
|
else if (ArgNode->Asl.ParseOpcode == PARSEOP_NAMESEG)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_CONNECTION_MISSING, ArgNode, NULL);
|
|
break;
|
|
}
|
|
|
|
ArgNode = ArgNode->Asl.Next;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|