| /****************************************************************************** |
| * |
| * Module Name: exoparg3 - AML execution - opcodes with 3 arguments |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2015, 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. |
| */ |
| |
| #include <contrib/dev/acpica/include/acpi.h> |
| #include <contrib/dev/acpica/include/accommon.h> |
| #include <contrib/dev/acpica/include/acinterp.h> |
| #include <contrib/dev/acpica/include/acparser.h> |
| #include <contrib/dev/acpica/include/amlcode.h> |
| |
| |
| #define _COMPONENT ACPI_EXECUTER |
| ACPI_MODULE_NAME ("exoparg3") |
| |
| |
| /*! |
| * 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_3A_0T_0R |
| * |
| * PARAMETERS: WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Execute Triadic operator (3 operands) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExOpcode_3A_0T_0R ( |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| ACPI_SIGNAL_FATAL_INFO *Fatal; |
| ACPI_STATUS Status = AE_OK; |
| |
| |
| ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_0T_0R, |
| AcpiPsGetOpcodeName (WalkState->Opcode)); |
| |
| |
| switch (WalkState->Opcode) |
| { |
| case AML_FATAL_OP: /* Fatal (FatalType FatalCode FatalArg) */ |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| "FatalOp: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n", |
| (UINT32) Operand[0]->Integer.Value, |
| (UINT32) Operand[1]->Integer.Value, |
| (UINT32) Operand[2]->Integer.Value)); |
| |
| Fatal = ACPI_ALLOCATE (sizeof (ACPI_SIGNAL_FATAL_INFO)); |
| if (Fatal) |
| { |
| Fatal->Type = (UINT32) Operand[0]->Integer.Value; |
| Fatal->Code = (UINT32) Operand[1]->Integer.Value; |
| Fatal->Argument = (UINT32) Operand[2]->Integer.Value; |
| } |
| |
| /* Always signal the OS! */ |
| |
| Status = AcpiOsSignal (ACPI_SIGNAL_FATAL, Fatal); |
| |
| /* Might return while OS is shutting down, just continue */ |
| |
| ACPI_FREE (Fatal); |
| goto Cleanup; |
| |
| case AML_EXTERNAL_OP: |
| /* |
| * If the interpreter sees this opcode, just ignore it. The External |
| * op is intended for use by disassemblers in order to properly |
| * disassemble control method invocations. The opcode or group of |
| * opcodes should be surrounded by an "if (0)" clause to ensure that |
| * AML interpreters never see the opcode. |
| */ |
| Status = AE_OK; |
| goto Cleanup; |
| |
| default: |
| |
| ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", |
| WalkState->Opcode)); |
| Status = AE_AML_BAD_OPCODE; |
| goto Cleanup; |
| } |
| |
| |
| Cleanup: |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExOpcode_3A_1T_1R |
| * |
| * PARAMETERS: WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Execute Triadic operator (3 operands) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExOpcode_3A_1T_1R ( |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| ACPI_OPERAND_OBJECT *ReturnDesc = NULL; |
| char *Buffer = NULL; |
| ACPI_STATUS Status = AE_OK; |
| UINT64 Index; |
| ACPI_SIZE Length; |
| |
| |
| ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_1T_1R, |
| AcpiPsGetOpcodeName (WalkState->Opcode)); |
| |
| |
| switch (WalkState->Opcode) |
| { |
| case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */ |
| /* |
| * Create the return object. The Source operand is guaranteed to be |
| * either a String or a Buffer, so just use its type. |
| */ |
| ReturnDesc = AcpiUtCreateInternalObject ( |
| (Operand[0])->Common.Type); |
| if (!ReturnDesc) |
| { |
| Status = AE_NO_MEMORY; |
| goto Cleanup; |
| } |
| |
| /* Get the Integer values from the objects */ |
| |
| Index = Operand[1]->Integer.Value; |
| Length = (ACPI_SIZE) Operand[2]->Integer.Value; |
| |
| /* |
| * If the index is beyond the length of the String/Buffer, or if the |
| * requested length is zero, return a zero-length String/Buffer |
| */ |
| if (Index >= Operand[0]->String.Length) |
| { |
| Length = 0; |
| } |
| |
| /* Truncate request if larger than the actual String/Buffer */ |
| |
| else if ((Index + Length) > Operand[0]->String.Length) |
| { |
| Length = (ACPI_SIZE) Operand[0]->String.Length - |
| (ACPI_SIZE) Index; |
| } |
| |
| /* Strings always have a sub-pointer, not so for buffers */ |
| |
| switch ((Operand[0])->Common.Type) |
| { |
| case ACPI_TYPE_STRING: |
| |
| /* Always allocate a new buffer for the String */ |
| |
| Buffer = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) Length + 1); |
| if (!Buffer) |
| { |
| Status = AE_NO_MEMORY; |
| goto Cleanup; |
| } |
| break; |
| |
| case ACPI_TYPE_BUFFER: |
| |
| /* If the requested length is zero, don't allocate a buffer */ |
| |
| if (Length > 0) |
| { |
| /* Allocate a new buffer for the Buffer */ |
| |
| Buffer = ACPI_ALLOCATE_ZEROED (Length); |
| if (!Buffer) |
| { |
| Status = AE_NO_MEMORY; |
| goto Cleanup; |
| } |
| } |
| break; |
| |
| default: /* Should not happen */ |
| |
| Status = AE_AML_OPERAND_TYPE; |
| goto Cleanup; |
| } |
| |
| if (Buffer) |
| { |
| /* We have a buffer, copy the portion requested */ |
| |
| memcpy (Buffer, Operand[0]->String.Pointer + Index, |
| Length); |
| } |
| |
| /* Set the length of the new String/Buffer */ |
| |
| ReturnDesc->String.Pointer = Buffer; |
| ReturnDesc->String.Length = (UINT32) Length; |
| |
| /* Mark buffer initialized */ |
| |
| ReturnDesc->Buffer.Flags |= AOPOBJ_DATA_VALID; |
| break; |
| |
| default: |
| |
| ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", |
| WalkState->Opcode)); |
| Status = AE_AML_BAD_OPCODE; |
| goto Cleanup; |
| } |
| |
| /* Store the result in the target */ |
| |
| Status = AcpiExStore (ReturnDesc, Operand[3], WalkState); |
| |
| Cleanup: |
| |
| /* Delete return object on error */ |
| |
| if (ACPI_FAILURE (Status) || WalkState->ResultObj) |
| { |
| AcpiUtRemoveReference (ReturnDesc); |
| WalkState->ResultObj = NULL; |
| } |
| |
| /* Set the return object and exit */ |
| |
| else |
| { |
| WalkState->ResultObj = ReturnDesc; |
| } |
| return_ACPI_STATUS (Status); |
| } |