diff options
Diffstat (limited to 'sys/contrib/dev/acpica/exoparg1.c')
| -rw-r--r-- | sys/contrib/dev/acpica/exoparg1.c | 1178 |
1 files changed, 1178 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/exoparg1.c b/sys/contrib/dev/acpica/exoparg1.c new file mode 100644 index 0000000..51f34af --- /dev/null +++ b/sys/contrib/dev/acpica/exoparg1.c @@ -0,0 +1,1178 @@ + +/****************************************************************************** + * + * Module Name: exoparg1 - AML execution - opcodes with 1 argument + * $Revision: 1.184 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2007, 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 __EXOPARG1_C__ + +#include <contrib/dev/acpica/acpi.h> +#include <contrib/dev/acpica/acparser.h> +#include <contrib/dev/acpica/acdispat.h> +#include <contrib/dev/acpica/acinterp.h> +#include <contrib/dev/acpica/amlcode.h> +#include <contrib/dev/acpica/acnamesp.h> + + +#define _COMPONENT ACPI_EXECUTER + ACPI_MODULE_NAME ("exoparg1") + + +/*! + * 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 (0 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_0A_0T_1R + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute operator with no operands, one return value + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExOpcode_0A_0T_1R ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status = AE_OK; + ACPI_OPERAND_OBJECT *ReturnDesc = NULL; + + + ACPI_FUNCTION_TRACE_STR (ExOpcode_0A_0T_1R, + AcpiPsGetOpcodeName (WalkState->Opcode)); + + + /* Examine the AML opcode */ + + switch (WalkState->Opcode) + { + case AML_TIMER_OP: /* Timer () */ + + /* Create a return object of type Integer */ + + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!ReturnDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + ReturnDesc->Integer.Value = AcpiOsGetTimer (); + break; + + default: /* Unknown opcode */ + + ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + break; + } + +Cleanup: + + /* Delete return object on error */ + + if ((ACPI_FAILURE (Status)) || WalkState->ResultObj) + { + AcpiUtRemoveReference (ReturnDesc); + WalkState->ResultObj = NULL; + } + else + { + /* Save the return value */ + + WalkState->ResultObj = ReturnDesc; + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExOpcode_1A_0T_0R + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on + * object stack + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExOpcode_1A_0T_0R ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R, + AcpiPsGetOpcodeName (WalkState->Opcode)); + + + /* Examine the AML opcode */ + + switch (WalkState->Opcode) + { + case AML_RELEASE_OP: /* Release (MutexObject) */ + + Status = AcpiExReleaseMutex (Operand[0], WalkState); + break; + + + case AML_RESET_OP: /* Reset (EventObject) */ + + Status = AcpiExSystemResetEvent (Operand[0]); + break; + + + case AML_SIGNAL_OP: /* Signal (EventObject) */ + + Status = AcpiExSystemSignalEvent (Operand[0]); + break; + + + case AML_SLEEP_OP: /* Sleep (MsecTime) */ + + Status = AcpiExSystemDoSuspend (Operand[0]->Integer.Value); + break; + + + case AML_STALL_OP: /* Stall (UsecTime) */ + + Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value); + break; + + + case AML_UNLOAD_OP: /* Unload (Handle) */ + + Status = AcpiExUnloadTable (Operand[0]); + break; + + + default: /* Unknown opcode */ + + ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + break; + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExOpcode_1A_1T_0R + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute opcode with one argument, one target, and no + * return value. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExOpcode_1A_1T_0R ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status = AE_OK; + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + + + ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_0R, + AcpiPsGetOpcodeName (WalkState->Opcode)); + + + /* Examine the AML opcode */ + + switch (WalkState->Opcode) + { + case AML_LOAD_OP: + + Status = AcpiExLoadOp (Operand[0], Operand[1], WalkState); + break; + + default: /* Unknown opcode */ + + ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + } + + +Cleanup: + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExOpcode_1A_1T_1R + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute opcode with one argument, one target, and a + * return value. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExOpcode_1A_1T_1R ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status = AE_OK; + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_OPERAND_OBJECT *ReturnDesc = NULL; + ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL; + UINT32 Temp32; + UINT32 i; + ACPI_INTEGER PowerOfTen; + ACPI_INTEGER Digit; + + + ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_1R, + AcpiPsGetOpcodeName (WalkState->Opcode)); + + + /* Examine the AML opcode */ + + 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: + + /* Create a return object of type Integer for these opcodes */ + + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!ReturnDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + switch (WalkState->Opcode) + { + case AML_BIT_NOT_OP: /* Not (Operand, Result) */ + + ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value; + break; + + + case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */ + + ReturnDesc->Integer.Value = Operand[0]->Integer.Value; + + /* + * Acpi specification describes Integer type as a little + * endian unsigned value, so this boundary condition is valid. + */ + for (Temp32 = 0; ReturnDesc->Integer.Value && + Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) + { + ReturnDesc->Integer.Value >>= 1; + } + + ReturnDesc->Integer.Value = Temp32; + break; + + + case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */ + + ReturnDesc->Integer.Value = Operand[0]->Integer.Value; + + /* + * The Acpi specification describes Integer type as a little + * endian unsigned value, so this boundary condition is valid. + */ + for (Temp32 = 0; ReturnDesc->Integer.Value && + Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) + { + ReturnDesc->Integer.Value <<= 1; + } + + /* Since the bit position is one-based, subtract from 33 (65) */ + + ReturnDesc->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 characters + * (if table is 32-bit, integer can hold 8 BCD characters) + * Convert each 4-bit BCD value + */ + PowerOfTen = 1; + ReturnDesc->Integer.Value = 0; + Digit = Operand[0]->Integer.Value; + + /* Convert each BCD digit (each is one nybble wide) */ + + for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++) + { + /* Get the least significant 4-bit BCD digit */ + + Temp32 = ((UINT32) Digit) & 0xF; + + /* Check the range of the digit */ + + if (Temp32 > 9) + { + ACPI_ERROR ((AE_INFO, + "BCD digit too large (not decimal): 0x%X", + Temp32)); + + Status = AE_AML_NUMERIC_OVERFLOW; + goto Cleanup; + } + + /* Sum the digit into the result with the current power of 10 */ + + ReturnDesc->Integer.Value += + (((ACPI_INTEGER) Temp32) * PowerOfTen); + + /* Shift to next BCD digit */ + + Digit >>= 4; + + /* Next power of 10 */ + + PowerOfTen *= 10; + } + break; + + + case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */ + + ReturnDesc->Integer.Value = 0; + Digit = Operand[0]->Integer.Value; + + /* Each BCD digit is one nybble wide */ + + for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++) + { + (void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32); + + /* + * Insert the BCD digit that resides in the + * remainder from above + */ + ReturnDesc->Integer.Value |= + (((ACPI_INTEGER) Temp32) << ACPI_MUL_4 (i)); + } + + /* Overflow if there is any data left in Digit */ + + if (Digit > 0) + { + ACPI_ERROR ((AE_INFO, + "Integer too large to convert to BCD: %8.8X%8.8X", + ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value))); + Status = AE_AML_NUMERIC_OVERFLOW; + goto Cleanup; + } + 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 *) Operand[0] == AcpiGbl_RootNode) + { + /* + * This means that the object does not exist in the namespace, + * return FALSE + */ + ReturnDesc->Integer.Value = 0; + goto Cleanup; + } + + /* Get the object reference, store it, and remove our reference */ + + Status = AcpiExGetObjectReference (Operand[0], + &ReturnDesc2, WalkState); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState); + AcpiUtRemoveReference (ReturnDesc2); + + /* The object exists in the namespace, return TRUE */ + + ReturnDesc->Integer.Value = ACPI_INTEGER_MAX; + goto Cleanup; + + + default: + /* No other opcodes get here */ + break; + } + 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. + */ + Status = AcpiExStore (Operand[0], Operand[1], WalkState); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* It is possible that the Store already produced a return object */ + + if (!WalkState->ResultObj) + { + /* + * Normally, we would remove a reference on the Operand[0] + * 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 = Operand[0]; + WalkState->Operands[0] = NULL; /* Prevent deletion */ + } + return_ACPI_STATUS (Status); + + + /* + * ACPI 2.0 Opcodes + */ + case AML_COPY_OP: /* Copy (Source, Target) */ + + Status = AcpiUtCopyIobjectToIobject (Operand[0], &ReturnDesc, + WalkState); + break; + + + case AML_TO_DECSTRING_OP: /* ToDecimalString (Data, Result) */ + + Status = AcpiExConvertToString (Operand[0], &ReturnDesc, + ACPI_EXPLICIT_CONVERT_DECIMAL); + if (ReturnDesc == Operand[0]) + { + /* No conversion performed, add ref to handle return value */ + AcpiUtAddReference (ReturnDesc); + } + break; + + + case AML_TO_HEXSTRING_OP: /* ToHexString (Data, Result) */ + + Status = AcpiExConvertToString (Operand[0], &ReturnDesc, + ACPI_EXPLICIT_CONVERT_HEX); + if (ReturnDesc == Operand[0]) + { + /* No conversion performed, add ref to handle return value */ + AcpiUtAddReference (ReturnDesc); + } + break; + + + case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */ + + Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc); + if (ReturnDesc == Operand[0]) + { + /* No conversion performed, add ref to handle return value */ + AcpiUtAddReference (ReturnDesc); + } + break; + + + case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */ + + Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc, + ACPI_ANY_BASE); + if (ReturnDesc == Operand[0]) + { + /* No conversion performed, add ref to handle return value */ + AcpiUtAddReference (ReturnDesc); + } + break; + + + case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */ + case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */ + + /* These are two obsolete opcodes */ + + ACPI_ERROR ((AE_INFO, + "%s is obsolete and not implemented", + AcpiPsGetOpcodeName (WalkState->Opcode))); + Status = AE_SUPPORT; + goto Cleanup; + + + default: /* Unknown opcode */ + + ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + } + + if (ACPI_SUCCESS (Status)) + { + /* Store the return value computed above into the target object */ + + Status = AcpiExStore (ReturnDesc, Operand[1], WalkState); + } + + +Cleanup: + + /* Delete return object on error */ + + if (ACPI_FAILURE (Status)) + { + AcpiUtRemoveReference (ReturnDesc); + } + + /* Save return object on success */ + + else if (!WalkState->ResultObj) + { + WalkState->ResultObj = ReturnDesc; + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExOpcode_1A_0T_1R + * + * PARAMETERS: WalkState - Current state (contains AML opcode) + * + * RETURN: Status + * + * DESCRIPTION: Execute opcode with one argument, no target, and a return value + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExOpcode_1A_0T_1R ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_OPERAND_OBJECT *TempDesc; + ACPI_OPERAND_OBJECT *ReturnDesc = NULL; + ACPI_STATUS Status = AE_OK; + UINT32 Type; + ACPI_INTEGER Value; + + + ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_1R, + AcpiPsGetOpcodeName (WalkState->Opcode)); + + + /* Examine the AML opcode */ + + switch (WalkState->Opcode) + { + case AML_LNOT_OP: /* LNot (Operand) */ + + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!ReturnDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* + * Set result to ONES (TRUE) if Value == 0. Note: + * ReturnDesc->Integer.Value is initially == 0 (FALSE) from above. + */ + if (!Operand[0]->Integer.Value) + { + ReturnDesc->Integer.Value = ACPI_INTEGER_MAX; + } + break; + + + case AML_DECREMENT_OP: /* Decrement (Operand) */ + case AML_INCREMENT_OP: /* Increment (Operand) */ + + /* + * Create a new integer. Can't just get the base integer and + * increment it because it may be an Arg or Field. + */ + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!ReturnDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* + * Since we are expecting a Reference operand, it can be either a + * NS Node or an internal object. + */ + TempDesc = Operand[0]; + if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND) + { + /* Internal reference object - prevent deletion */ + + AcpiUtAddReference (TempDesc); + } + + /* + * Convert the Reference operand to an Integer (This removes a + * reference on the Operand[0] object) + * + * NOTE: We use LNOT_OP here in order to force resolution of the + * reference operand to an actual integer. + */ + Status = AcpiExResolveOperands (AML_LNOT_OP, &TempDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + ACPI_EXCEPTION ((AE_INFO, Status, + "While resolving operands for [%s]", + AcpiPsGetOpcodeName (WalkState->Opcode))); + + goto Cleanup; + } + + /* + * TempDesc is now guaranteed to be an Integer object -- + * Perform the actual increment or decrement + */ + if (WalkState->Opcode == AML_INCREMENT_OP) + { + ReturnDesc->Integer.Value = TempDesc->Integer.Value +1; + } + else + { + ReturnDesc->Integer.Value = TempDesc->Integer.Value -1; + } + + /* Finished with this Integer object */ + + AcpiUtRemoveReference (TempDesc); + + /* + * Store the result back (indirectly) through the original + * Reference object + */ + Status = AcpiExStore (ReturnDesc, Operand[0], WalkState); + break; + + + case AML_TYPE_OP: /* ObjectType (SourceObject) */ + + /* + * Note: The operand is not resolved at this point because we want to + * get the associated object, not its value. For example, we don't + * want to resolve a FieldUnit to its value, we want the actual + * FieldUnit object. + */ + + /* Get the type of the base object */ + + Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* Allocate a descriptor to hold the type. */ + + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!ReturnDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + ReturnDesc->Integer.Value = Type; + break; + + + case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */ + + /* + * Note: The operand is not resolved at this point because we want to + * get the associated object, not its value. + */ + + /* Get the base object */ + + Status = AcpiExResolveMultiple (WalkState, + Operand[0], &Type, &TempDesc); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* + * The type of the base object must be integer, buffer, string, or + * package. All others are not supported. + * + * NOTE: Integer is not specifically supported by the ACPI spec, + * but is supported implicitly via implicit operand conversion. + * rather than bother with conversion, we just use the byte width + * global (4 or 8 bytes). + */ + switch (Type) + { + case ACPI_TYPE_INTEGER: + Value = AcpiGbl_IntegerByteWidth; + break; + + case ACPI_TYPE_BUFFER: + Value = TempDesc->Buffer.Length; + break; + + case ACPI_TYPE_STRING: + Value = TempDesc->String.Length; + break; + + case ACPI_TYPE_PACKAGE: + Value = TempDesc->Package.Count; + break; + + default: + ACPI_ERROR ((AE_INFO, + "Operand is not Buf/Int/Str/Pkg - found type %s", + AcpiUtGetTypeName (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 + */ + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!ReturnDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + ReturnDesc->Integer.Value = Value; + break; + + + case AML_REF_OF_OP: /* RefOf (SourceObject) */ + + Status = AcpiExGetObjectReference (Operand[0], &ReturnDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + break; + + + case AML_DEREF_OF_OP: /* DerefOf (ObjReference | String) */ + + /* Check for a method local or argument, or standalone String */ + + if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED) + { + TempDesc = AcpiNsGetAttachedObject ( + (ACPI_NAMESPACE_NODE *) Operand[0]); + if (TempDesc && + ((ACPI_GET_OBJECT_TYPE (TempDesc) == ACPI_TYPE_STRING) || + (ACPI_GET_OBJECT_TYPE (TempDesc) == ACPI_TYPE_LOCAL_REFERENCE))) + { + Operand[0] = TempDesc; + AcpiUtAddReference (TempDesc); + } + else + { + Status = AE_AML_OPERAND_TYPE; + goto Cleanup; + } + } + else + { + switch (ACPI_GET_OBJECT_TYPE (Operand[0])) + { + case ACPI_TYPE_LOCAL_REFERENCE: + /* + * This is a DerefOf (LocalX | ArgX) + * + * Must resolve/dereference the local/arg reference first + */ + switch (Operand[0]->Reference.Opcode) + { + case AML_LOCAL_OP: + case AML_ARG_OP: + + /* Set Operand[0] to the value of the local/arg */ + + Status = AcpiDsMethodDataGetValue ( + Operand[0]->Reference.Opcode, + Operand[0]->Reference.Offset, + WalkState, &TempDesc); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* + * Delete our reference to the input object and + * point to the object just retrieved + */ + AcpiUtRemoveReference (Operand[0]); + Operand[0] = TempDesc; + break; + + case AML_REF_OF_OP: + + /* Get the object to which the reference refers */ + + TempDesc = Operand[0]->Reference.Object; + AcpiUtRemoveReference (Operand[0]); + Operand[0] = TempDesc; + break; + + default: + + /* Must be an Index op - handled below */ + break; + } + break; + + case ACPI_TYPE_STRING: + break; + + default: + Status = AE_AML_OPERAND_TYPE; + goto Cleanup; + } + } + + if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED) + { + if (ACPI_GET_OBJECT_TYPE (Operand[0]) == ACPI_TYPE_STRING) + { + /* + * This is a DerefOf (String). The string is a reference + * to a named ACPI object. + * + * 1) Find the owning Node + * 2) Dereference the node to an actual object. Could be a + * Field, so we need to resolve the node to a value. + */ + Status = AcpiNsGetNode (WalkState->ScopeInfo->Scope.Node, + Operand[0]->String.Pointer, + ACPI_NS_SEARCH_PARENT, + ACPI_CAST_INDIRECT_PTR ( + ACPI_NAMESPACE_NODE, &ReturnDesc)); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + Status = AcpiExResolveNodeToValue ( + ACPI_CAST_INDIRECT_PTR ( + ACPI_NAMESPACE_NODE, &ReturnDesc), + WalkState); + goto Cleanup; + } + } + + /* Operand[0] may have changed from the code above */ + + if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED) + { + /* + * This is a DerefOf (ObjectReference) + * Get the actual object from the Node (This is the dereference). + * This case may only happen when a LocalX or ArgX is + * dereferenced above. + */ + ReturnDesc = AcpiNsGetAttachedObject ( + (ACPI_NAMESPACE_NODE *) Operand[0]); + AcpiUtAddReference (ReturnDesc); + } + else + { + /* + * This must be a reference object produced by either the + * Index() or RefOf() operator + */ + switch (Operand[0]->Reference.Opcode) + { + case AML_INDEX_OP: + + /* + * The target type for the Index operator must be + * either a Buffer or a Package + */ + switch (Operand[0]->Reference.TargetType) + { + case ACPI_TYPE_BUFFER_FIELD: + + TempDesc = Operand[0]->Reference.Object; + + /* + * 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! + */ + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); + if (!ReturnDesc) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* + * Since we are returning the value of the buffer at the + * indexed location, we don't need to add an additional + * reference to the buffer itself. + */ + ReturnDesc->Integer.Value = + TempDesc->Buffer.Pointer[Operand[0]->Reference.Offset]; + break; + + + case ACPI_TYPE_PACKAGE: + + /* + * Return the referenced element of the package. We must + * add another reference to the referenced object, however. + */ + ReturnDesc = *(Operand[0]->Reference.Where); + if (ReturnDesc) + { + AcpiUtAddReference (ReturnDesc); + } + break; + + + default: + + ACPI_ERROR ((AE_INFO, + "Unknown Index TargetType %X in obj %p", + Operand[0]->Reference.TargetType, Operand[0])); + Status = AE_AML_OPERAND_TYPE; + goto Cleanup; + } + break; + + + case AML_REF_OF_OP: + + ReturnDesc = Operand[0]->Reference.Object; + + if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) == + ACPI_DESC_TYPE_NAMED) + { + ReturnDesc = AcpiNsGetAttachedObject ( + (ACPI_NAMESPACE_NODE *) ReturnDesc); + } + + /* Add another reference to the object! */ + + AcpiUtAddReference (ReturnDesc); + break; + + + default: + ACPI_ERROR ((AE_INFO, + "Unknown opcode in reference(%p) - %X", + Operand[0], Operand[0]->Reference.Opcode)); + + Status = AE_TYPE; + goto Cleanup; + } + } + break; + + + default: + + ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", + WalkState->Opcode)); + Status = AE_AML_BAD_OPCODE; + goto Cleanup; + } + + +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); +} + |
