/****************************************************************************** * * Module Name: dswexec - Dispatcher method execution callbacks; * dispatch to interpreter. * $Revision: 89 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * *****************************************************************************/ #define __DSWEXEC_C__ #include "acpi.h" #include "acparser.h" #include "amlcode.h" #include "acdispat.h" #include "acinterp.h" #include "acnamesp.h" #include "acdebug.h" #define _COMPONENT ACPI_DISPATCHER ACPI_MODULE_NAME ("dswexec") /* * Dispatch table for opcode classes */ ACPI_EXECUTE_OP AcpiGbl_OpTypeDispatch [] = { AcpiExOpcode_1A_0T_0R, AcpiExOpcode_1A_0T_1R, AcpiExOpcode_1A_1T_0R, AcpiExOpcode_1A_1T_1R, AcpiExOpcode_2A_0T_0R, AcpiExOpcode_2A_0T_1R, AcpiExOpcode_2A_1T_1R, AcpiExOpcode_2A_2T_1R, AcpiExOpcode_3A_0T_0R, AcpiExOpcode_3A_1T_1R, AcpiExOpcode_6A_0T_1R}; /***************************************************************************** * * FUNCTION: AcpiDsGetPredicateValue * * PARAMETERS: WalkState - Current state of the parse tree walk * * RETURN: Status * * DESCRIPTION: Get the result of a predicate evaluation * ****************************************************************************/ ACPI_STATUS AcpiDsGetPredicateValue ( ACPI_WALK_STATE *WalkState, ACPI_OPERAND_OBJECT *ResultObj) { ACPI_STATUS Status = AE_OK; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_FUNCTION_TRACE_PTR ("DsGetPredicateValue", WalkState); WalkState->ControlState->Common.State = 0; if (ResultObj) { Status = AcpiDsResultPop (&ObjDesc, WalkState); if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not get result from predicate evaluation, %s\n", AcpiFormatException (Status))); return_ACPI_STATUS (Status); } } else { Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ObjDesc = WalkState->Operands [0]; } if (!ObjDesc) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No predicate ObjDesc=%p State=%p\n", ObjDesc, WalkState)); return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* * Result of predicate evaluation currently must * be a number */ if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Bad predicate (not a number) ObjDesc=%p State=%p Type=%X\n", ObjDesc, WalkState, ObjDesc->Common.Type)); Status = AE_AML_OPERAND_TYPE; goto Cleanup; } /* Truncate the predicate to 32-bits if necessary */ AcpiExTruncateFor32bitTable (ObjDesc, WalkState); /* * Save the result of the predicate evaluation on * the control stack */ if (ObjDesc->Integer.Value) { WalkState->ControlState->Common.Value = TRUE; } else { /* * Predicate is FALSE, we will just toss the * rest of the package */ WalkState->ControlState->Common.Value = FALSE; Status = AE_CTRL_FALSE; } Cleanup: ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", WalkState->ControlState->Common.Value, WalkState->Op)); /* Break to debugger to display result */ ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (ObjDesc, WalkState)); /* * Delete the predicate result object (we know that * we don't need it anymore) */ AcpiUtRemoveReference (ObjDesc); WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL; return_ACPI_STATUS (Status); } /***************************************************************************** * * FUNCTION: AcpiDsExecBeginOp * * PARAMETERS: WalkState - Current state of the parse tree walk * OutOp - Return op if a new one is created * * RETURN: Status * * DESCRIPTION: Descending callback used during the execution of control * methods. This is where most operators and operands are * dispatched to the interpreter. * ****************************************************************************/ ACPI_STATUS AcpiDsExecBeginOp ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT **OutOp) { ACPI_PARSE_OBJECT *Op; ACPI_STATUS Status = AE_OK; UINT32 OpcodeClass; ACPI_FUNCTION_TRACE_PTR ("DsExecBeginOp", WalkState); Op = WalkState->Op; if (!Op) { Status = AcpiDsLoad2BeginOp (WalkState, OutOp); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Op = *OutOp; WalkState->Op = Op; WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Opcode); WalkState->Opcode = Op->Opcode; if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType)) { ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op)); AcpiDsScopeStackPop (WalkState); } } if (Op == WalkState->Origin) { if (OutOp) { *OutOp = Op; } return_ACPI_STATUS (AE_OK); } /* * If the previous opcode was a conditional, this opcode * must be the beginning of the associated predicate. * Save this knowledge in the current scope descriptor */ if ((WalkState->ControlState) && (WalkState->ControlState->Common.State == ACPI_CONTROL_CONDITIONAL_EXECUTING)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Exec predicate Op=%p State=%p\n", Op, WalkState)); WalkState->ControlState->Common.State = ACPI_CONTROL_PREDICATE_EXECUTING; /* Save start of predicate */ WalkState->ControlState->Control.PredicateOp = Op; } OpcodeClass = WalkState->OpInfo->Class; /* We want to send namepaths to the load code */ if (Op->Opcode == AML_INT_NAMEPATH_OP) { OpcodeClass = AML_CLASS_NAMED_OBJECT; } /* * Handle the opcode based upon the opcode type */ switch (OpcodeClass) { case AML_CLASS_CONTROL: Status = AcpiDsResultStackPush (WalkState); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiDsExecBeginControlOp (WalkState, Op); break; case AML_CLASS_NAMED_OBJECT: if (WalkState->WalkType == ACPI_WALK_METHOD) { /* * Found a named object declaration during method * execution; we must enter this object into the * namespace. The created object is temporary and * will be deleted upon completion of the execution * of this method. */ Status = AcpiDsLoad2BeginOp (WalkState, NULL); } if (Op->Opcode == AML_REGION_OP) { Status = AcpiDsResultStackPush (WalkState); } break; case AML_CLASS_EXECUTE: case AML_CLASS_CREATE: /* most operators with arguments */ /* Start a new result/operand state */ Status = AcpiDsResultStackPush (WalkState); break; default: break; } /* Nothing to do here during method execution */ return_ACPI_STATUS (Status); } /***************************************************************************** * * FUNCTION: AcpiDsExecEndOp * * PARAMETERS: WalkState - Current state of the parse tree walk * Op - Op that has been just been completed in the * walk; Arguments have now been evaluated. * * RETURN: Status * * DESCRIPTION: Ascending callback used during the execution of control * methods. The only thing we really need to do here is to * notice the beginning of IF, ELSE, and WHILE blocks. * ****************************************************************************/ ACPI_STATUS AcpiDsExecEndOp ( ACPI_WALK_STATE *WalkState) { ACPI_PARSE_OBJECT *Op; ACPI_STATUS Status = AE_OK; UINT32 OpType; UINT32 OpClass; ACPI_PARSE_OBJECT *NextOp; ACPI_PARSE_OBJECT *FirstArg; UINT32 i; ACPI_FUNCTION_TRACE_PTR ("DsExecEndOp", WalkState); Op = WalkState->Op; OpType = WalkState->OpInfo->Type; OpClass = WalkState->OpInfo->Class; if (OpClass == AML_CLASS_UNKNOWN) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown opcode %X\n", Op->Opcode)); return_ACPI_STATUS (AE_NOT_IMPLEMENTED); } FirstArg = Op->Value.Arg; /* Init the walk state */ WalkState->NumOperands = 0; WalkState->ReturnDesc = NULL; WalkState->ResultObj = NULL; /* Call debugger for single step support (DEBUG build only) */ ACPI_DEBUGGER_EXEC (Status = AcpiDbSingleStep (WalkState, Op, OpClass)); ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (Status)) {return_ACPI_STATUS (Status);}); /* Decode the Opcode Class */ switch (OpClass) { case AML_CLASS_ARGUMENT: /* constants, literals, etc. -- do nothing */ break; case AML_CLASS_EXECUTE: /* most operators with arguments */ /* Build resolved operand stack */ Status = AcpiDsCreateOperands (WalkState, FirstArg); if (ACPI_FAILURE (Status)) { goto Cleanup; } /* Done with this result state (Now that operand stack is built) */ Status = AcpiDsResultStackPop (WalkState); if (ACPI_FAILURE (Status)) { goto Cleanup; } /* Resolve all operands */ Status = AcpiExResolveOperands (WalkState->Opcode, &(WalkState->Operands [WalkState->NumOperands -1]), WalkState); if (ACPI_SUCCESS (Status)) { ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE, AcpiPsGetOpcodeName (WalkState->Opcode), WalkState->NumOperands, "after ExResolveOperands"); /* * Dispatch the request to the appropriate interpreter handler * routine. There is one routine per opcode "type" based upon the * number of opcode arguments and return type. */ Status = AcpiGbl_OpTypeDispatch [OpType] (WalkState); } else { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "[%s]: Could not resolve operands, %s\n", AcpiPsGetOpcodeName (WalkState->Opcode), AcpiFormatException (Status))); } /* Always delete the argument objects and clear the operand stack */ for (i = 0; i < WalkState->NumOperands; i++) { /* * Remove a reference to all operands, including both * "Arguments" and "Targets". */ AcpiUtRemoveReference (WalkState->Operands[i]); WalkState->Operands[i] = NULL; } WalkState->NumOperands = 0; /* * If a result object was returned from above, push it on the * current result stack */ if (ACPI_SUCCESS (Status) && WalkState->ResultObj) { Status = AcpiDsResultPush (WalkState->ResultObj, WalkState); } break; default: switch (OpType) { case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ /* 1 Operand, 0 ExternalResult, 0 InternalResult */ Status = AcpiDsExecEndControlOp (WalkState, Op); AcpiDsResultStackPop (WalkState); break; case AML_TYPE_METHOD_CALL: ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method invocation, Op=%p\n", Op)); /* * (AML_METHODCALL) Op->Value->Arg->Node contains * the method Node pointer */ /* NextOp points to the op that holds the method name */ NextOp = FirstArg; /* NextOp points to first argument op */ NextOp = NextOp->Next; /* * Get the method's arguments and put them on the operand stack */ Status = AcpiDsCreateOperands (WalkState, NextOp); if (ACPI_FAILURE (Status)) { break; } /* * Since the operands will be passed to another control method, * we must resolve all local references here (Local variables, * arguments to *this* method, etc.) */ Status = AcpiDsResolveOperands (WalkState); if (ACPI_FAILURE (Status)) { break; } /* * Tell the walk loop to preempt this running method and * execute the new method */ Status = AE_CTRL_TRANSFER; /* * Return now; we don't want to disturb anything, * especially the operand count! */ return_ACPI_STATUS (Status); case AML_TYPE_CREATE_FIELD: ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Executing CreateField Buffer/Index Op=%p\n", Op)); Status = AcpiDsLoad2EndOp (WalkState); if (ACPI_FAILURE (Status)) { break; } Status = AcpiDsEvalBufferFieldOperands (WalkState, Op); break; case AML_TYPE_NAMED_FIELD: case AML_TYPE_NAMED_COMPLEX: case AML_TYPE_NAMED_SIMPLE: case AML_TYPE_NAMED_NO_OBJ: Status = AcpiDsLoad2EndOp (WalkState); if (ACPI_FAILURE (Status)) { break; } if (Op->Opcode == AML_REGION_OP) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Executing OpRegion Address/Length Op=%p\n", Op)); Status = AcpiDsEvalRegionOperands (WalkState, Op); if (ACPI_FAILURE (Status)) { break; } Status = AcpiDsResultStackPop (WalkState); } break; case AML_TYPE_UNDEFINED: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Undefined opcode type Op=%p\n", Op)); return_ACPI_STATUS (AE_NOT_IMPLEMENTED); case AML_TYPE_BOGUS: ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Internal opcode=%X type Op=%p\n", WalkState->Opcode, Op)); break; default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p\n", OpClass, OpType, Op->Opcode, Op)); Status = AE_NOT_IMPLEMENTED; break; } } /* * ACPI 2.0 support for 64-bit integers: Truncate numeric * result value if we are executing from a 32-bit ACPI table */ AcpiExTruncateFor32bitTable (WalkState->ResultObj, WalkState); /* * Check if we just completed the evaluation of a * conditional predicate */ if ((WalkState->ControlState) && (WalkState->ControlState->Common.State == ACPI_CONTROL_PREDICATE_EXECUTING) && (WalkState->ControlState->Control.PredicateOp == Op)) { Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj); WalkState->ResultObj = NULL; } Cleanup: if (WalkState->ResultObj) { /* Break to debugger to display result */ ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (WalkState->ResultObj, WalkState)); /* * Delete the result op if and only if: * Parent will not use the result -- such as any * non-nested type2 op in a method (parent will be method) */ AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState); } /* Always clear the object stack */ WalkState->NumOperands = 0; return_ACPI_STATUS (Status); }