/****************************************************************************** * * Module Name: exoparg2 - AML execution - opcodes with 2 arguments * *****************************************************************************/ /* * Copyright (C) 2000 - 2013, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. */ #define __EXOPARG2_C__ #include #include #include #include #include #include #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exoparg2") /*! * Naming convention for AML interpreter execution routines. * * The routines that begin execution of AML opcodes are named with a common * convention based upon the number of arguments, the number of target operands, * and whether or not a value is returned: * * AcpiExOpcode_xA_yT_zR * * Where: * * xA - ARGUMENTS: The number of arguments (input operands) that are * required for this opcode type (1 through 6 args). * yT - TARGETS: The number of targets (output operands) that are required * for this opcode type (0, 1, or 2 targets). * zR - RETURN VALUE: Indicates whether this opcode type returns a value * as the function return (0 or 1). * * The AcpiExOpcode* functions are called via the Dispatcher component with * fully resolved operands. !*/ /******************************************************************************* * * FUNCTION: AcpiExOpcode_2A_0T_0R * * PARAMETERS: WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Execute opcode with two arguments, no target, and no return * value. * * ALLOCATION: Deletes both operands * ******************************************************************************/ ACPI_STATUS AcpiExOpcode_2A_0T_0R ( ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_NAMESPACE_NODE *Node; UINT32 Value; ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R, AcpiPsGetOpcodeName (WalkState->Opcode)); /* Examine the opcode */ switch (WalkState->Opcode) { case AML_NOTIFY_OP: /* Notify (NotifyObject, NotifyValue) */ /* The first operand is a namespace node */ Node = (ACPI_NAMESPACE_NODE *) Operand[0]; /* Second value is the notify value */ Value = (UINT32) Operand[1]->Integer.Value; /* Are notifies allowed on this object? */ if (!AcpiEvIsNotifyObject (Node)) { ACPI_ERROR ((AE_INFO, "Unexpected notify object type [%s]", AcpiUtGetTypeName (Node->Type))); Status = AE_AML_OPERAND_TYPE; break; } /* * Dispatch the notify to the appropriate handler * NOTE: the request is queued for execution after this method * completes. The notify handlers are NOT invoked synchronously * from this thread -- because handlers may in turn run other * control methods. */ Status = AcpiEvQueueNotifyRequest (Node, Value); break; default: ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", WalkState->Opcode)); Status = AE_AML_BAD_OPCODE; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExOpcode_2A_2T_1R * * PARAMETERS: WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets * and one implicit return value. * ******************************************************************************/ ACPI_STATUS AcpiExOpcode_2A_2T_1R ( ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_OPERAND_OBJECT *ReturnDesc1 = NULL; ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL; ACPI_STATUS Status; ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_2T_1R, AcpiPsGetOpcodeName (WalkState->Opcode)); /* Execute the opcode */ switch (WalkState->Opcode) { case AML_DIVIDE_OP: /* Divide (Dividend, Divisor, RemainderResult QuotientResult) */ ReturnDesc1 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); if (!ReturnDesc1) { Status = AE_NO_MEMORY; goto Cleanup; } ReturnDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); if (!ReturnDesc2) { Status = AE_NO_MEMORY; goto Cleanup; } /* Quotient to ReturnDesc1, remainder to ReturnDesc2 */ Status = AcpiUtDivide (Operand[0]->Integer.Value, Operand[1]->Integer.Value, &ReturnDesc1->Integer.Value, &ReturnDesc2->Integer.Value); if (ACPI_FAILURE (Status)) { goto Cleanup; } break; default: ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", WalkState->Opcode)); Status = AE_AML_BAD_OPCODE; goto Cleanup; } /* Store the results to the target reference operands */ Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState); if (ACPI_FAILURE (Status)) { goto Cleanup; } Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState); if (ACPI_FAILURE (Status)) { goto Cleanup; } Cleanup: /* * Since the remainder is not returned indirectly, remove a reference to * it. Only the quotient is returned indirectly. */ AcpiUtRemoveReference (ReturnDesc2); if (ACPI_FAILURE (Status)) { /* Delete the return object */ AcpiUtRemoveReference (ReturnDesc1); } /* Save return object (the remainder) on success */ else { WalkState->ResultObj = ReturnDesc1; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExOpcode_2A_1T_1R * * PARAMETERS: WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Execute opcode with two arguments, one target, and a return * value. * ******************************************************************************/ ACPI_STATUS AcpiExOpcode_2A_1T_1R ( ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_OPERAND_OBJECT *ReturnDesc = NULL; UINT64 Index; ACPI_STATUS Status = AE_OK; ACPI_SIZE Length = 0; ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R, AcpiPsGetOpcodeName (WalkState->Opcode)); /* Execute the opcode */ if (WalkState->OpInfo->Flags & AML_MATH) { /* All simple math opcodes (add, etc.) */ ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } ReturnDesc->Integer.Value = AcpiExDoMathOp (WalkState->Opcode, Operand[0]->Integer.Value, Operand[1]->Integer.Value); goto StoreResultToTarget; } switch (WalkState->Opcode) { case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */ ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* ReturnDesc will contain the remainder */ Status = AcpiUtDivide (Operand[0]->Integer.Value, Operand[1]->Integer.Value, NULL, &ReturnDesc->Integer.Value); break; case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */ Status = AcpiExDoConcatenate (Operand[0], Operand[1], &ReturnDesc, WalkState); break; case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */ /* * Input object is guaranteed to be a buffer at this point (it may have * been converted.) Copy the raw buffer data to a new object of * type String. */ /* * Get the length of the new string. It is the smallest of: * 1) Length of the input buffer * 2) Max length as specified in the ToString operator * 3) Length of input buffer up to a zero byte (null terminator) * * NOTE: A length of zero is ok, and will create a zero-length, null * terminated string. */ while ((Length < Operand[0]->Buffer.Length) && (Length < Operand[1]->Integer.Value) && (Operand[0]->Buffer.Pointer[Length])) { Length++; } /* Allocate a new string object */ ReturnDesc = AcpiUtCreateStringObject (Length); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* * Copy the raw buffer data with no transform. * (NULL terminated already) */ ACPI_MEMCPY (ReturnDesc->String.Pointer, Operand[0]->Buffer.Pointer, Length); break; case AML_CONCAT_RES_OP: /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */ Status = AcpiExConcatTemplate (Operand[0], Operand[1], &ReturnDesc, WalkState); break; case AML_INDEX_OP: /* Index (Source Index Result) */ /* Create the internal return object */ ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* Initialize the Index reference object */ Index = Operand[1]->Integer.Value; ReturnDesc->Reference.Value = (UINT32) Index; ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX; /* * At this point, the Source operand is a String, Buffer, or Package. * Verify that the index is within range. */ switch ((Operand[0])->Common.Type) { case ACPI_TYPE_STRING: if (Index >= Operand[0]->String.Length) { Length = Operand[0]->String.Length; Status = AE_AML_STRING_LIMIT; } ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD; break; case ACPI_TYPE_BUFFER: if (Index >= Operand[0]->Buffer.Length) { Length = Operand[0]->Buffer.Length; Status = AE_AML_BUFFER_LIMIT; } ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD; break; case ACPI_TYPE_PACKAGE: if (Index >= Operand[0]->Package.Count) { Length = Operand[0]->Package.Count; Status = AE_AML_PACKAGE_LIMIT; } ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE; ReturnDesc->Reference.Where = &Operand[0]->Package.Elements [Index]; break; default: Status = AE_AML_INTERNAL; goto Cleanup; } /* Failure means that the Index was beyond the end of the object */ if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Index (0x%X%8.8X) is beyond end of object (length 0x%X)", ACPI_FORMAT_UINT64 (Index), (UINT32) Length)); goto Cleanup; } /* * Save the target object and add a reference to it for the life * of the index */ ReturnDesc->Reference.Object = Operand[0]; AcpiUtAddReference (Operand[0]); /* Store the reference to the Target */ Status = AcpiExStore (ReturnDesc, Operand[2], WalkState); /* Return the reference */ WalkState->ResultObj = ReturnDesc; goto Cleanup; default: ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", WalkState->Opcode)); Status = AE_AML_BAD_OPCODE; break; } StoreResultToTarget: if (ACPI_SUCCESS (Status)) { /* * Store the result of the operation (which is now in ReturnDesc) into * the Target descriptor. */ Status = AcpiExStore (ReturnDesc, Operand[2], WalkState); if (ACPI_FAILURE (Status)) { goto Cleanup; } if (!WalkState->ResultObj) { WalkState->ResultObj = ReturnDesc; } } Cleanup: /* Delete return object on error */ if (ACPI_FAILURE (Status)) { AcpiUtRemoveReference (ReturnDesc); WalkState->ResultObj = NULL; } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExOpcode_2A_0T_1R * * PARAMETERS: WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value * ******************************************************************************/ ACPI_STATUS AcpiExOpcode_2A_0T_1R ( ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_OPERAND_OBJECT *ReturnDesc = NULL; ACPI_STATUS Status = AE_OK; BOOLEAN LogicalResult = FALSE; ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_1R, AcpiPsGetOpcodeName (WalkState->Opcode)); /* Create the internal return object */ ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* Execute the Opcode */ if (WalkState->OpInfo->Flags & AML_LOGICAL_NUMERIC) { /* LogicalOp (Operand0, Operand1) */ Status = AcpiExDoLogicalNumericOp (WalkState->Opcode, Operand[0]->Integer.Value, Operand[1]->Integer.Value, &LogicalResult); goto StoreLogicalResult; } else if (WalkState->OpInfo->Flags & AML_LOGICAL) { /* LogicalOp (Operand0, Operand1) */ Status = AcpiExDoLogicalOp (WalkState->Opcode, Operand[0], Operand[1], &LogicalResult); goto StoreLogicalResult; } switch (WalkState->Opcode) { case AML_ACQUIRE_OP: /* Acquire (MutexObject, Timeout) */ Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState); if (Status == AE_TIME) { LogicalResult = TRUE; /* TRUE = Acquire timed out */ Status = AE_OK; } break; case AML_WAIT_OP: /* Wait (EventObject, Timeout) */ Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]); if (Status == AE_TIME) { LogicalResult = TRUE; /* TRUE, Wait timed out */ Status = AE_OK; } break; default: ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", WalkState->Opcode)); Status = AE_AML_BAD_OPCODE; goto Cleanup; } StoreLogicalResult: /* * Set return value to according to LogicalResult. logical TRUE (all ones) * Default is FALSE (zero) */ if (LogicalResult) { ReturnDesc->Integer.Value = ACPI_UINT64_MAX; } Cleanup: /* Delete return object on error */ if (ACPI_FAILURE (Status)) { AcpiUtRemoveReference (ReturnDesc); } /* Save return object on success */ else { WalkState->ResultObj = ReturnDesc; } return_ACPI_STATUS (Status); }