diff options
Diffstat (limited to 'sys/contrib/dev/acpica/exdyadic.c')
| -rw-r--r-- | sys/contrib/dev/acpica/exdyadic.c | 939 |
1 files changed, 939 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/exdyadic.c b/sys/contrib/dev/acpica/exdyadic.c new file mode 100644 index 0000000..ef434a2 --- /dev/null +++ b/sys/contrib/dev/acpica/exdyadic.c @@ -0,0 +1,939 @@ +/****************************************************************************** + * + * Module Name: exdyadic - ACPI AML execution for dyadic (2-operand) operators + * $Revision: 91 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __EXDYADIC_C__ + +#include "acpi.h" +#include "acparser.h" +#include "acnamesp.h" +#include "acinterp.h" +#include "acevents.h" +#include "amlcode.h" +#include "acdispat.h" + + +#define _COMPONENT ACPI_EXECUTER + MODULE_NAME ("exdyadic") + + +/******************************************************************************* + * + * FUNCTION: AcpiExDoConcatenate + * + * PARAMETERS: *ObjDesc - Object to be converted. Must be an + * Integer, Buffer, or String + * WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Concatenate two objects OF THE SAME TYPE. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDoConcatenate ( + ACPI_OPERAND_OBJECT *ObjDesc, + ACPI_OPERAND_OBJECT *ObjDesc2, + ACPI_OPERAND_OBJECT **ActualRetDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status; + UINT32 i; + ACPI_INTEGER ThisInteger; + ACPI_OPERAND_OBJECT *RetDesc; + NATIVE_CHAR *NewBuf; + UINT32 IntegerSize = sizeof (ACPI_INTEGER); + + + FUNCTION_ENTRY (); + + + /* + * There are three cases to handle: + * 1) Two Integers concatenated to produce a buffer + * 2) Two Strings concatenated to produce a string + * 3) Two Buffers concatenated to produce a buffer + */ + switch (ObjDesc->Common.Type) + { + case ACPI_TYPE_INTEGER: + + /* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */ + + if (WalkState->MethodNode->Flags & ANOBJ_DATA_WIDTH_32) + { + /* + * We are running a method that exists in a 32-bit ACPI table. + * Truncate the value to 32 bits by zeroing out the upper + * 32-bit field + */ + IntegerSize = sizeof (UINT32); + } + + /* Result of two integers is a buffer */ + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER); + if (!RetDesc) + { + return (AE_NO_MEMORY); + } + + /* Need enough space for two integers */ + + RetDesc->Buffer.Length = IntegerSize * 2; + NewBuf = ACPI_MEM_CALLOCATE (RetDesc->Buffer.Length); + if (!NewBuf) + { + REPORT_ERROR + (("ExDoConcatenate: Buffer allocation failure\n")); + Status = AE_NO_MEMORY; + goto Cleanup; + } + + RetDesc->Buffer.Pointer = (UINT8 *) NewBuf; + + /* Convert the first integer */ + + ThisInteger = ObjDesc->Integer.Value; + for (i = 0; i < IntegerSize; i++) + { + NewBuf[i] = (UINT8) ThisInteger; + ThisInteger >>= 8; + } + + /* Convert the second integer */ + + ThisInteger = ObjDesc2->Integer.Value; + for (; i < (IntegerSize * 2); i++) + { + NewBuf[i] = (UINT8) ThisInteger; + ThisInteger >>= 8; + } + + break; + + + case ACPI_TYPE_STRING: + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING); + if (!RetDesc) + { + return (AE_NO_MEMORY); + } + + /* Operand1 is string */ + + NewBuf = ACPI_MEM_ALLOCATE (ObjDesc->String.Length + + ObjDesc2->String.Length + 1); + if (!NewBuf) + { + REPORT_ERROR + (("ExDoConcatenate: String allocation failure\n")); + Status = AE_NO_MEMORY; + goto Cleanup; + } + + STRCPY (NewBuf, ObjDesc->String.Pointer); + STRCPY (NewBuf + ObjDesc->String.Length, + ObjDesc2->String.Pointer); + + /* Point the return object to the new string */ + + RetDesc->String.Pointer = NewBuf; + RetDesc->String.Length = ObjDesc->String.Length += + ObjDesc2->String.Length; + break; + + + case ACPI_TYPE_BUFFER: + + /* Operand1 is a buffer */ + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER); + if (!RetDesc) + { + return (AE_NO_MEMORY); + } + + NewBuf = ACPI_MEM_ALLOCATE (ObjDesc->Buffer.Length + + ObjDesc2->Buffer.Length); + if (!NewBuf) + { + REPORT_ERROR + (("ExDoConcatenate: Buffer allocation failure\n")); + Status = AE_NO_MEMORY; + goto Cleanup; + } + + MEMCPY (NewBuf, ObjDesc->Buffer.Pointer, + ObjDesc->Buffer.Length); + MEMCPY (NewBuf + ObjDesc->Buffer.Length, ObjDesc2->Buffer.Pointer, + ObjDesc2->Buffer.Length); + + /* + * Point the return object to the new buffer + */ + + RetDesc->Buffer.Pointer = (UINT8 *) NewBuf; + RetDesc->Buffer.Length = ObjDesc->Buffer.Length + + ObjDesc2->Buffer.Length; + break; + + default: + Status = AE_AML_INTERNAL; + RetDesc = NULL; + } + + + *ActualRetDesc = RetDesc; + return (AE_OK); + + +Cleanup: + + AcpiUtRemoveReference (RetDesc); + return (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDyadic1 + * + * PARAMETERS: WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 1 dyadic operator with numeric operands: + * NotifyOp + * + * ALLOCATION: Deletes both operands + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDyadic1 ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_NAMESPACE_NODE *Node; + ACPI_STATUS Status = AE_OK; + + + FUNCTION_TRACE_PTR ("ExDyadic1", WALK_OPERANDS); + + + + /* 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]; + Operand[0] = NULL; + + /* The node must refer to a device or thermal zone */ + + if (Node && Operand[1]) + { + switch (Node->Type) + { + case ACPI_TYPE_DEVICE: + case ACPI_TYPE_THERMAL: + + /* + * 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, + (UINT32) Operand[1]->Integer.Value); + break; + + default: + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unexpected notify object type %X\n", + Node->Type)); + + Status = AE_AML_OPERAND_TYPE; + break; + } + } + break; + + default: + + REPORT_ERROR (("AcpiExDyadic1: Unknown dyadic opcode %X\n", WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + } + + + /* Always delete both operands */ + + AcpiUtRemoveReference (Operand[1]); + AcpiUtRemoveReference (Operand[0]); + + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDyadic2R + * + * PARAMETERS: WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 2 dyadic operator with numeric operands and + * one or two result operands. + * + * ALLOCATION: Deletes one operand descriptor -- other remains on stack + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDyadic2R ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_OPERAND_OBJECT *RetDesc = NULL; + ACPI_OPERAND_OBJECT *RetDesc2 = NULL; + ACPI_STATUS Status = AE_OK; + + + FUNCTION_TRACE_U32 ("ExDyadic2R", WalkState->Opcode); + + + /* Create an internal return object if necessary */ + + switch (WalkState->Opcode) + { + case AML_ADD_OP: + case AML_BIT_AND_OP: + case AML_BIT_NAND_OP: + case AML_BIT_OR_OP: + case AML_BIT_NOR_OP: + case AML_BIT_XOR_OP: + case AML_DIVIDE_OP: + case AML_MOD_OP: + case AML_MULTIPLY_OP: + case AML_SHIFT_LEFT_OP: + case AML_SHIFT_RIGHT_OP: + case AML_SUBTRACT_OP: + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + break; + } + + + /* + * Execute the opcode + */ + switch (WalkState->Opcode) + { + + case AML_ADD_OP: /* Add (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value + + Operand[1]->Integer.Value; + break; + + + case AML_BIT_AND_OP: /* And (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value & + Operand[1]->Integer.Value; + break; + + + case AML_BIT_NAND_OP: /* NAnd (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = ~(Operand[0]->Integer.Value & + Operand[1]->Integer.Value); + break; + + + case AML_BIT_OR_OP: /* Or (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value | + Operand[1]->Integer.Value; + break; + + + case AML_BIT_NOR_OP: /* NOr (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = ~(Operand[0]->Integer.Value | + Operand[1]->Integer.Value); + break; + + + case AML_BIT_XOR_OP: /* XOr (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value ^ + Operand[1]->Integer.Value; + break; + + + case AML_DIVIDE_OP: /* Divide (Dividend, Divisor, RemainderResult QuotientRsult) */ + + if (!Operand[1]->Integer.Value) + { + REPORT_ERROR (("DivideOp: Divide by zero\n")); + + Status = AE_AML_DIVIDE_BY_ZERO; + goto Cleanup; + } + + RetDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc2) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* + * RetDesc2 will contain the quotient, + * RetDesc will contain the remainder + */ + Status = AcpiUtDivide (&Operand[0]->Integer.Value, &Operand[1]->Integer.Value, + &RetDesc2->Integer.Value, &RetDesc->Integer.Value); + + break; + + + case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */ + + if (!Operand[1]->Integer.Value) + { + REPORT_ERROR (("ModOp: Divide by zero\n")); + + Status = AE_AML_DIVIDE_BY_ZERO; + goto Cleanup; + } + + /* RetDesc will contain the remainder */ + + Status = AcpiUtDivide (&Operand[0]->Integer.Value, &Operand[1]->Integer.Value, + NULL, &RetDesc->Integer.Value); + + break; + + + case AML_MULTIPLY_OP: /* Multiply (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value * + Operand[1]->Integer.Value; + break; + + + case AML_SHIFT_LEFT_OP: /* ShiftLeft (Operand, ShiftCount, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value << + Operand[1]->Integer.Value; + break; + + + case AML_SHIFT_RIGHT_OP: /* ShiftRight (Operand, ShiftCount, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value >> + Operand[1]->Integer.Value; + break; + + + case AML_SUBTRACT_OP: /* Subtract (Operand1, Operand2, Result) */ + + RetDesc->Integer.Value = Operand[0]->Integer.Value - + Operand[1]->Integer.Value; + break; + + + case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */ + + /* + * Convert the second operand if necessary. The first operand + * determines the type of the second operand, (See the Data Types + * section of the ACPI specification.) Both object types are + * guaranteed to be either Integer/String/Buffer by the operand + * resolution mechanism above. + */ + switch (Operand[0]->Common.Type) + { + case ACPI_TYPE_INTEGER: + Status = AcpiExConvertToInteger (Operand[1], &Operand[1], WalkState); + break; + + case ACPI_TYPE_STRING: + Status = AcpiExConvertToString (Operand[1], &Operand[1], 16, ACPI_UINT32_MAX, WalkState); + break; + + case ACPI_TYPE_BUFFER: + Status = AcpiExConvertToBuffer (Operand[1], &Operand[1], WalkState); + break; + + default: + Status = AE_AML_INTERNAL; + } + + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* + * Both operands are now known to be the same object type + * (Both are Integer, String, or Buffer), and we can now perform the + * concatenation. + */ + Status = AcpiExDoConcatenate (Operand[0], Operand[1], &RetDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + break; + + + case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */ + + Status = AcpiExConvertToString (Operand[0], &RetDesc, 16, + (UINT32) Operand[1]->Integer.Value, WalkState); + break; + + + case AML_CONCAT_RES_OP: /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */ + + Status = AE_NOT_IMPLEMENTED; + goto Cleanup; + break; + + + default: + + REPORT_ERROR (("AcpiExDyadic2R: Unknown dyadic opcode %X\n", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + } + + + /* + * Store the result of the operation (which is now in Operand[0]) into + * the result descriptor, or the location pointed to by the result + * descriptor (Operand[2]). + */ + Status = AcpiExStore (RetDesc, Operand[2], WalkState); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + if (AML_DIVIDE_OP == WalkState->Opcode) + { + Status = AcpiExStore (RetDesc2, Operand[3], WalkState); + + /* + * Since the remainder is not returned, remove a reference to + * the object we created earlier + */ + AcpiUtRemoveReference (RetDesc); + WalkState->ResultObj = RetDesc2; + } + + else + { + WalkState->ResultObj = RetDesc; + } + + +Cleanup: + + /* Always delete the operands */ + + AcpiUtRemoveReference (Operand[0]); + AcpiUtRemoveReference (Operand[1]); + + + /* Delete return object on error */ + + if (ACPI_FAILURE (Status)) + { + /* On failure, delete the result ops */ + + AcpiUtRemoveReference (Operand[2]); + AcpiUtRemoveReference (Operand[3]); + + if (RetDesc) + { + /* And delete the internal return object */ + + AcpiUtRemoveReference (RetDesc); + RetDesc = NULL; + } + } + + /* Set the return object and exit */ + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDyadic2S + * + * PARAMETERS: WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 2 dyadic synchronization operator + * + * ALLOCATION: Deletes one operand descriptor -- other remains on stack + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDyadic2S ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_OPERAND_OBJECT *RetDesc = NULL; + ACPI_STATUS Status; + + + FUNCTION_TRACE_PTR ("ExDyadic2S", WALK_OPERANDS); + + + + /* Create the internal return object */ + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* Default return value is FALSE, operation did not time out */ + + RetDesc->Integer.Value = 0; + + + /* Examine the opcode */ + + switch (WalkState->Opcode) + { + + case AML_ACQUIRE_OP: /* Acquire (MutexObject, Timeout) */ + + Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState); + break; + + + case AML_WAIT_OP: /* Wait (EventObject, Timeout) */ + + Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]); + break; + + + default: + + REPORT_ERROR (("AcpiExDyadic2S: Unknown dyadic synchronization opcode %X\n", WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + } + + + /* + * Return a boolean indicating if operation timed out + * (TRUE) or not (FALSE) + */ + if (Status == AE_TIME) + { + RetDesc->Integer.Value = ACPI_INTEGER_MAX; /* TRUE, op timed out */ + Status = AE_OK; + } + + +Cleanup: + + /* Delete params */ + + AcpiUtRemoveReference (Operand[1]); + AcpiUtRemoveReference (Operand[0]); + + /* Delete return object on error */ + + if (ACPI_FAILURE (Status) && + (RetDesc)) + { + AcpiUtRemoveReference (RetDesc); + RetDesc = NULL; + } + + + /* Set the return object and exit */ + + WalkState->ResultObj = RetDesc; + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDyadic2 + * + * PARAMETERS: WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 2 dyadic operator with numeric operands and + * no result operands + * + * ALLOCATION: Deletes one operand descriptor -- other remains on stack + * containing result value + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDyadic2 ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_OPERAND_OBJECT *RetDesc = NULL; + ACPI_STATUS Status = AE_OK; + BOOLEAN Lboolean; + + + FUNCTION_TRACE_PTR ("ExDyadic2", WALK_OPERANDS); + + + /* Create the internal return object */ + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* + * Execute the WalkState->Opcode + */ + Lboolean = FALSE; + switch (WalkState->Opcode) + { + + case AML_LAND_OP: /* LAnd (Operand1, Operand2) */ + + Lboolean = (BOOLEAN) (Operand[0]->Integer.Value && + Operand[1]->Integer.Value); + break; + + + case AML_LEQUAL_OP: /* LEqual (Operand1, Operand2) */ + + Lboolean = (BOOLEAN) (Operand[0]->Integer.Value == + Operand[1]->Integer.Value); + break; + + + case AML_LGREATER_OP: /* LGreater (Operand1, Operand2) */ + + Lboolean = (BOOLEAN) (Operand[0]->Integer.Value > + Operand[1]->Integer.Value); + break; + + + case AML_LLESS_OP: /* LLess (Operand1, Operand2) */ + + Lboolean = (BOOLEAN) (Operand[0]->Integer.Value < + Operand[1]->Integer.Value); + break; + + + case AML_LOR_OP: /* LOr (Operand1, Operand2) */ + + Lboolean = (BOOLEAN) (Operand[0]->Integer.Value || + Operand[1]->Integer.Value); + break; + + + case AML_COPY_OP: /* Copy (Source, Target) (ACPI 2.0) */ + + Status = AE_NOT_IMPLEMENTED; + goto Cleanup; + break; + + + default: + + REPORT_ERROR (("AcpiExDyadic2: Unknown dyadic opcode %X\n", WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + break; + } + + + /* Set return value to logical TRUE (all ones) or FALSE (zero) */ + + if (Lboolean) + { + RetDesc->Integer.Value = ACPI_INTEGER_MAX; + } + else + { + RetDesc->Integer.Value = 0; + } + + +Cleanup: + + /* Always delete operands */ + + AcpiUtRemoveReference (Operand[0]); + AcpiUtRemoveReference (Operand[1]); + + + /* Delete return object on error */ + + if (ACPI_FAILURE (Status) && + (RetDesc)) + { + AcpiUtRemoveReference (RetDesc); + RetDesc = NULL; + } + + + /* Set the return object and exit */ + + WalkState->ResultObj = RetDesc; + return_ACPI_STATUS (Status); +} + + |
