diff options
Diffstat (limited to 'sys/contrib/dev/acpica/exmonad.c')
| -rw-r--r-- | sys/contrib/dev/acpica/exmonad.c | 1083 |
1 files changed, 1083 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/exmonad.c b/sys/contrib/dev/acpica/exmonad.c new file mode 100644 index 0000000..3e6a969 --- /dev/null +++ b/sys/contrib/dev/acpica/exmonad.c @@ -0,0 +1,1083 @@ + +/****************************************************************************** + * + * Module Name: exmonad - ACPI AML execution for monadic (1 operand) operators + * $Revision: 113 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 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 __EXMONAD_C__ + +#include "acpi.h" +#include "acparser.h" +#include "acdispat.h" +#include "acinterp.h" +#include "amlcode.h" +#include "acnamesp.h" + + +#define _COMPONENT ACPI_EXECUTER + MODULE_NAME ("exmonad") + + +/******************************************************************************* + * + * FUNCTION: AcpiExGetObjectReference + * + * PARAMETERS: ObjDesc - Create a reference to this object + * RetDesc - Where to store the reference + * + * RETURN: Status + * + * DESCRIPTION: Obtain and return a "reference" to the target object + * Common code for the RefOfOp and the CondRefOfOp. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiExGetObjectReference ( + ACPI_OPERAND_OBJECT *ObjDesc, + ACPI_OPERAND_OBJECT **RetDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status = AE_OK; + + + FUNCTION_TRACE_PTR ("ExGetObjectReference", ObjDesc); + + + if (VALID_DESCRIPTOR_TYPE (ObjDesc, ACPI_DESC_TYPE_INTERNAL)) + { + if (ObjDesc->Common.Type != INTERNAL_TYPE_REFERENCE) + { + *RetDesc = NULL; + Status = AE_TYPE; + goto Cleanup; + } + + /* + * Not a Name -- an indirect name pointer would have + * been converted to a direct name pointer in AcpiExResolveOperands + */ + switch (ObjDesc->Reference.Opcode) + { + case AML_LOCAL_OP: + case AML_ARG_OP: + + *RetDesc = (void *) AcpiDsMethodDataGetNode (ObjDesc->Reference.Opcode, + ObjDesc->Reference.Offset, WalkState); + break; + + default: + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(Internal) Unknown Ref subtype %02x\n", + ObjDesc->Reference.Opcode)); + *RetDesc = NULL; + Status = AE_AML_INTERNAL; + goto Cleanup; + } + + } + + else if (VALID_DESCRIPTOR_TYPE (ObjDesc, ACPI_DESC_TYPE_NAMED)) + { + /* Must be a named object; Just return the Node */ + + *RetDesc = ObjDesc; + } + + else + { + *RetDesc = NULL; + Status = AE_TYPE; + } + + +Cleanup: + + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p Ref=%p\n", ObjDesc, *RetDesc)); + return_ACPI_STATUS (Status); +} + +#define ObjDesc Operand[0] +#define ResDesc Operand[1] + + +/******************************************************************************* + * + * FUNCTION: AcpiExMonadic1 + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on + * object stack + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExMonadic1 ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_STATUS Status; + + + FUNCTION_TRACE_PTR ("ExMonadic1", WALK_OPERANDS); + + + /* Examine the opcode */ + + switch (WalkState->Opcode) + { + case AML_RELEASE_OP: /* Release (MutexObject) */ + + Status = AcpiExReleaseMutex (ObjDesc, WalkState); + break; + + + case AML_RESET_OP: /* Reset (EventObject) */ + + Status = AcpiExSystemResetEvent (ObjDesc); + break; + + + case AML_SIGNAL_OP: /* Signal (EventObject) */ + + Status = AcpiExSystemSignalEvent (ObjDesc); + break; + + + case AML_SLEEP_OP: /* Sleep (MsecTime) */ + + AcpiExSystemDoSuspend ((UINT32) ObjDesc->Integer.Value); + break; + + + case AML_STALL_OP: /* Stall (UsecTime) */ + + AcpiExSystemDoStall ((UINT32) ObjDesc->Integer.Value); + break; + + + default: /* Unknown opcode */ + + REPORT_ERROR (("AcpiExMonadic1: Unknown monadic opcode %X\n", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + break; + } + + + /* Always delete the operand */ + + AcpiUtRemoveReference (ObjDesc); + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExMonadic2R + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 2 monadic operator with numeric operand and + * result operand on operand stack + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExMonadic2R ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status = AE_OK; + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_OPERAND_OBJECT *RetDesc = NULL; + ACPI_OPERAND_OBJECT *RetDesc2 = NULL; + UINT32 Temp32; + UINT32 i; + UINT32 j; + ACPI_INTEGER Digit; + + + FUNCTION_TRACE_PTR ("ExMonadic2R", WALK_OPERANDS); + + + + + /* Create a return object of type NUMBER for most opcodes */ + + switch (WalkState->Opcode) + { + case AML_BIT_NOT_OP: + case AML_FIND_SET_LEFT_BIT_OP: + case AML_FIND_SET_RIGHT_BIT_OP: + case AML_FROM_BCD_OP: + case AML_TO_BCD_OP: + case AML_COND_REF_OF_OP: + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + break; + } + + + switch (WalkState->Opcode) + { + + case AML_BIT_NOT_OP: /* Not (Operand, Result) */ + + RetDesc->Integer.Value = ~ObjDesc->Integer.Value; + break; + + + case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */ + + + RetDesc->Integer.Value = ObjDesc->Integer.Value; + + /* + * Acpi specification describes Integer type as a little + * endian unsigned value, so this boundary condition is valid. + */ + for (Temp32 = 0; RetDesc->Integer.Value && Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) + { + RetDesc->Integer.Value >>= 1; + } + + RetDesc->Integer.Value = Temp32; + break; + + + case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */ + + + RetDesc->Integer.Value = ObjDesc->Integer.Value; + + /* + * The Acpi specification describes Integer type as a little + * endian unsigned value, so this boundary condition is valid. + */ + for (Temp32 = 0; RetDesc->Integer.Value && Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) + { + RetDesc->Integer.Value <<= 1; + } + + /* Since returns must be 1-based, subtract from 33 (65) */ + + RetDesc->Integer.Value = Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32; + break; + + + case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */ + + /* + * The 64-bit ACPI integer can hold 16 4-bit BCD integers + */ + RetDesc->Integer.Value = 0; + for (i = 0; i < ACPI_MAX_BCD_DIGITS; i++) + { + /* Get one BCD digit */ + + Digit = (ACPI_INTEGER) ((ObjDesc->Integer.Value >> (i * 4)) & 0xF); + + /* Check the range of the digit */ + + if (Digit > 9) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "BCD digit too large: \n", + Digit)); + Status = AE_AML_NUMERIC_OVERFLOW; + goto Cleanup; + } + + if (Digit > 0) + { + /* Sum into the result with the appropriate power of 10 */ + + for (j = 0; j < i; j++) + { + Digit *= 10; + } + + RetDesc->Integer.Value += Digit; + } + } + break; + + + case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */ + + if (ObjDesc->Integer.Value > ACPI_MAX_BCD_VALUE) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "BCD overflow: %d\n", + ObjDesc->Integer.Value)); + Status = AE_AML_NUMERIC_OVERFLOW; + goto Cleanup; + } + + RetDesc->Integer.Value = 0; + for (i = 0; i < ACPI_MAX_BCD_DIGITS; i++) + { + /* Divide by nth factor of 10 */ + + Temp32 = 0; + Digit = ObjDesc->Integer.Value; + for (j = 0; j < i; j++) + { + AcpiUtShortDivide (&Digit, 10, &Digit, &Temp32); + } + + /* Create the BCD digit from the remainder above */ + + if (Digit > 0) + { + RetDesc->Integer.Value += (Temp32 << (i * 4)); + } + } + break; + + + case AML_COND_REF_OF_OP: /* CondRefOf (SourceObject, Result) */ + + /* + * This op is a little strange because the internal return value is + * different than the return value stored in the result descriptor + * (There are really two return values) + */ + if ((ACPI_NAMESPACE_NODE *) ObjDesc == AcpiGbl_RootNode) + { + /* + * This means that the object does not exist in the namespace, + * return FALSE + */ + RetDesc->Integer.Value = 0; + + /* + * Must delete the result descriptor since there is no reference + * being returned + */ + AcpiUtRemoveReference (ResDesc); + goto Cleanup; + } + + /* Get the object reference and store it */ + + Status = AcpiExGetObjectReference (ObjDesc, &RetDesc2, WalkState); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + Status = AcpiExStore (RetDesc2, ResDesc, WalkState); + + /* The object exists in the namespace, return TRUE */ + + RetDesc->Integer.Value = ACPI_INTEGER_MAX; + goto Cleanup; + break; + + + case AML_STORE_OP: /* Store (Source, Target) */ + + /* + * A store operand is typically a number, string, buffer or lvalue + * Be careful about deleting the source object, + * since the object itself may have been stored. + */ + Temp32 = ObjDesc->Common.ReferenceCount; + Status = AcpiExStore (ObjDesc, ResDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + /* On failure, just delete the ObjDesc */ + + AcpiUtRemoveReference (ObjDesc); + return_ACPI_STATUS (Status); + } + +#if 0 + if ((ObjDesc->Common.ReferenceCount > Temp32) && + (!AcpiDsIsResultUsed (WalkState->Op, WalkState))) + { + ObjDesc->Common.ReferenceCount++; + } +#endif + + /* + * Normally, we would remove a reference on the ObjDesc parameter; + * But since it is being used as the internal return object + * (meaning we would normally increment it), the two cancel out, + * and we simply don't do anything. + */ + WalkState->ResultObj = ObjDesc; + return_ACPI_STATUS (Status); + break; + + + /* + * ACPI 2.0 Opcodes + */ + case AML_TO_DECSTRING_OP: /* ToDecimalString (Data, Result) */ + + Status = AcpiExConvertToString (ObjDesc, &RetDesc, 10, ACPI_UINT32_MAX, WalkState); + break; + + + case AML_TO_HEXSTRING_OP: /* ToHexString (Data, Result) */ + + Status = AcpiExConvertToString (ObjDesc, &RetDesc, 16, ACPI_UINT32_MAX, WalkState); + break; + + + case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */ + + Status = AcpiExConvertToBuffer (ObjDesc, &RetDesc, WalkState); + break; + + + case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */ + + Status = AcpiExConvertToInteger (ObjDesc, &RetDesc, WalkState); + break; + + + /* + * These are two obsolete opcodes + */ + case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */ + case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */ + + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s is unimplemented\n", + AcpiPsGetOpcodeName (WalkState->Opcode))); + Status = AE_SUPPORT; + goto Cleanup; + break; + + + default: /* Unknown opcode */ + + REPORT_ERROR (("AcpiExMonadic2R: Unknown monadic opcode %X\n", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + } + + + /* + * Store the return value computed above into the result object + */ + Status = AcpiExStore (RetDesc, ResDesc, WalkState); + + +Cleanup: + /* Always delete the operand object */ + + AcpiUtRemoveReference (ObjDesc); + + /* Delete return object(s) on error */ + + if (ACPI_FAILURE (Status)) + { + AcpiUtRemoveReference (ResDesc); /* Result descriptor */ + if (RetDesc) + { + AcpiUtRemoveReference (RetDesc); + RetDesc = NULL; + } + } + + /* Set the return object and exit */ + + WalkState->ResultObj = RetDesc; + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExMonadic2 + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 2 monadic operator with numeric operand: + * DerefOfOp, RefOfOp, SizeOfOp, TypeOp, IncrementOp, + * DecrementOp, LNotOp, + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExMonadic2 ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_OPERAND_OBJECT *TmpDesc; + ACPI_OPERAND_OBJECT *RetDesc = NULL; + ACPI_STATUS Status = AE_OK; + UINT32 Type; + ACPI_INTEGER Value; + + + FUNCTION_TRACE_PTR ("ExMonadic2", WALK_OPERANDS); + + + + + /* Get the operand and decode the opcode */ + + switch (WalkState->Opcode) + { + + case AML_LNOT_OP: /* LNot (Operand) */ + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + RetDesc->Integer.Value = !ObjDesc->Integer.Value; + break; + + + case AML_DECREMENT_OP: /* Decrement (Operand) */ + case AML_INCREMENT_OP: /* Increment (Operand) */ + + /* + * Since we are expecting an Reference on the top of the stack, it + * can be either an Node or an internal object. + * + * TBD: [Future] This may be the prototype code for all cases where + * a Reference is expected!! 10/99 + */ + if (VALID_DESCRIPTOR_TYPE (ObjDesc, ACPI_DESC_TYPE_NAMED)) + { + RetDesc = ObjDesc; + } + + else + { + /* + * Duplicate the Reference in a new object so that we can resolve it + * without destroying the original Reference object + */ + RetDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_REFERENCE); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + RetDesc->Reference.Opcode = ObjDesc->Reference.Opcode; + RetDesc->Reference.Offset = ObjDesc->Reference.Offset; + RetDesc->Reference.Object = ObjDesc->Reference.Object; + } + + + /* + * Convert the RetDesc Reference to a Number + * (This deletes the original RetDesc object) + */ + Status = AcpiExResolveOperands (AML_LNOT_OP, &RetDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s: bad operand(s) %s\n", + AcpiPsGetOpcodeName (WalkState->Opcode), AcpiFormatException(Status))); + + goto Cleanup; + } + + /* Do the actual increment or decrement */ + + if (AML_INCREMENT_OP == WalkState->Opcode) + { + RetDesc->Integer.Value++; + } + else + { + RetDesc->Integer.Value--; + } + + /* Store the result back in the original descriptor */ + + Status = AcpiExStore (RetDesc, ObjDesc, WalkState); + + /* Objdesc was just deleted (because it is an Reference) */ + + ObjDesc = NULL; + + break; + + + case AML_TYPE_OP: /* ObjectType (SourceObject) */ + + if (INTERNAL_TYPE_REFERENCE == ObjDesc->Common.Type) + { + /* + * Not a Name -- an indirect name pointer would have + * been converted to a direct name pointer in ResolveOperands + */ + switch (ObjDesc->Reference.Opcode) + { + case AML_ZERO_OP: + case AML_ONE_OP: + case AML_ONES_OP: + case AML_REVISION_OP: + + /* Constants are of type Number */ + + Type = ACPI_TYPE_INTEGER; + break; + + + case AML_DEBUG_OP: + + /* Per 1.0b spec, Debug object is of type "DebugObject" */ + + Type = ACPI_TYPE_DEBUG_OBJECT; + break; + + + case AML_INDEX_OP: + + /* Get the type of this reference (index into another object) */ + + Type = ObjDesc->Reference.TargetType; + if (Type == ACPI_TYPE_PACKAGE) + { + /* + * The main object is a package, we want to get the type + * of the individual package element that is referenced by + * the index. + */ + Type = (*(ObjDesc->Reference.Where))->Common.Type; + } + + break; + + + case AML_LOCAL_OP: + case AML_ARG_OP: + + Type = AcpiDsMethodDataGetType (ObjDesc->Reference.Opcode, + ObjDesc->Reference.Offset, WalkState); + break; + + + default: + + REPORT_ERROR (("AcpiExMonadic2/TypeOp: Internal error - Unknown Reference subtype %X\n", + ObjDesc->Reference.Opcode)); + Status = AE_AML_INTERNAL; + goto Cleanup; + } + } + + else + { + /* + * It's not a Reference, so it must be a direct name pointer. + */ + Type = AcpiNsGetType ((ACPI_NAMESPACE_NODE *) ObjDesc); + + /* Convert internal types to external types */ + + switch (Type) + { + case INTERNAL_TYPE_REGION_FIELD: + case INTERNAL_TYPE_BANK_FIELD: + case INTERNAL_TYPE_INDEX_FIELD: + + Type = ACPI_TYPE_FIELD_UNIT; + } + + } + + /* Allocate a descriptor to hold the type. */ + + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + RetDesc->Integer.Value = Type; + break; + + + case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */ + + if (VALID_DESCRIPTOR_TYPE (ObjDesc, ACPI_DESC_TYPE_NAMED)) + { + ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) ObjDesc); + } + + if (!ObjDesc) + { + Value = 0; + } + + else + { + switch (ObjDesc->Common.Type) + { + + case ACPI_TYPE_BUFFER: + + Value = ObjDesc->Buffer.Length; + break; + + + case ACPI_TYPE_STRING: + + Value = ObjDesc->String.Length; + break; + + + case ACPI_TYPE_PACKAGE: + + Value = ObjDesc->Package.Count; + break; + + case INTERNAL_TYPE_REFERENCE: + + Value = 4; + break; + + default: + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Not Buf/Str/Pkg - found type %X\n", + ObjDesc->Common.Type)); + Status = AE_AML_OPERAND_TYPE; + goto Cleanup; + } + } + + /* + * Now that we have the size of the object, create a result + * object to hold the value + */ + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + RetDesc->Integer.Value = Value; + break; + + + case AML_REF_OF_OP: /* RefOf (SourceObject) */ + + Status = AcpiExGetObjectReference (ObjDesc, &RetDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + break; + + + case AML_DEREF_OF_OP: /* DerefOf (ObjReference) */ + + /* Check for a method local or argument */ + + if (!VALID_DESCRIPTOR_TYPE (ObjDesc, ACPI_DESC_TYPE_NAMED)) + { + /* + * Must resolve/dereference the local/arg reference first + */ + switch (ObjDesc->Reference.Opcode) + { + /* Set ObjDesc to the value of the local/arg */ + + case AML_LOCAL_OP: + case AML_ARG_OP: + + AcpiDsMethodDataGetValue (ObjDesc->Reference.Opcode, + ObjDesc->Reference.Offset, WalkState, &TmpDesc); + + /* + * Delete our reference to the input object and + * point to the object just retrieved + */ + AcpiUtRemoveReference (ObjDesc); + ObjDesc = TmpDesc; + break; + + default: + + /* Index op - handled below */ + break; + } + } + + + /* ObjDesc may have changed from the code above */ + + if (VALID_DESCRIPTOR_TYPE (ObjDesc, ACPI_DESC_TYPE_NAMED)) + { + /* Get the actual object from the Node (This is the dereference) */ + + RetDesc = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Object; + + /* Returning a pointer to the object, add another reference! */ + + AcpiUtAddReference (RetDesc); + } + + else + { + /* + * This must be a reference object produced by the Index + * ASL operation -- check internal opcode + */ + if ((ObjDesc->Reference.Opcode != AML_INDEX_OP) && + (ObjDesc->Reference.Opcode != AML_REF_OF_OP)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown opcode in ref(%p) - %X\n", + ObjDesc, ObjDesc->Reference.Opcode)); + + Status = AE_TYPE; + goto Cleanup; + } + + + switch (ObjDesc->Reference.Opcode) + { + case AML_INDEX_OP: + + /* + * Supported target types for the Index operator are + * 1) A Buffer + * 2) A Package + */ + if (ObjDesc->Reference.TargetType == ACPI_TYPE_BUFFER_FIELD) + { + /* + * The target is a buffer, we must create a new object that + * contains one element of the buffer, the element pointed + * to by the index. + * + * NOTE: index into a buffer is NOT a pointer to a + * sub-buffer of the main buffer, it is only a pointer to a + * single element (byte) of the buffer! + */ + RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!RetDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + TmpDesc = ObjDesc->Reference.Object; + RetDesc->Integer.Value = + TmpDesc->Buffer.Pointer[ObjDesc->Reference.Offset]; + + /* TBD: [Investigate] (see below) Don't add an additional + * ref! + */ + } + + else if (ObjDesc->Reference.TargetType == ACPI_TYPE_PACKAGE) + { + /* + * The target is a package, we want to return the referenced + * element of the package. We must add another reference to + * this object, however. + */ + RetDesc = *(ObjDesc->Reference.Where); + if (!RetDesc) + { + /* + * We can't return a NULL dereferenced value. This is + * an uninitialized package element and is thus a + * severe error. + */ + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "NULL package element obj %p\n", + ObjDesc)); + Status = AE_AML_UNINITIALIZED_ELEMENT; + goto Cleanup; + } + + AcpiUtAddReference (RetDesc); + } + + else + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown TargetType %X in obj %p\n", + ObjDesc->Reference.TargetType, ObjDesc)); + Status = AE_AML_OPERAND_TYPE; + goto Cleanup; + } + + break; + + + case AML_REF_OF_OP: + + RetDesc = ObjDesc->Reference.Object; + + /* Add another reference to the object! */ + + AcpiUtAddReference (RetDesc); + break; + } + } + + break; + + + default: + + REPORT_ERROR (("AcpiExMonadic2: Unknown monadic opcode %X\n", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + } + + +Cleanup: + + if (ObjDesc) + { + AcpiUtRemoveReference (ObjDesc); + } + + /* Delete return object on error */ + + if (ACPI_FAILURE (Status) && + (RetDesc)) + { + AcpiUtRemoveReference (RetDesc); + RetDesc = NULL; + } + + WalkState->ResultObj = RetDesc; + return_ACPI_STATUS (Status); +} + |
