| /****************************************************************************** |
| * |
| * Module Name: exconcat - Concatenate-type AML operators |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2020, 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. |
| * |
| * 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 "acpi.h" |
| #include "accommon.h" |
| #include "acinterp.h" |
| #include "amlresrc.h" |
| |
| |
| #define _COMPONENT ACPI_EXECUTER |
| ACPI_MODULE_NAME ("exconcat") |
| |
| /* Local Prototypes */ |
| |
| static ACPI_STATUS |
| AcpiExConvertToObjectTypeString ( |
| ACPI_OPERAND_OBJECT *ObjDesc, |
| ACPI_OPERAND_OBJECT **ResultDesc); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExDoConcatenate |
| * |
| * PARAMETERS: Operand0 - First source object |
| * Operand1 - Second source object |
| * ActualReturnDesc - Where to place the return object |
| * WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Concatenate two objects with the ACPI-defined conversion |
| * rules as necessary. |
| * NOTE: |
| * Per the ACPI spec (up to 6.1), Concatenate only supports Integer, |
| * String, and Buffer objects. However, we support all objects here |
| * as an extension. This improves the usefulness of both Concatenate |
| * and the Printf/Fprintf macros. The extension returns a string |
| * describing the object type for the other objects. |
| * 02/2016. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExDoConcatenate ( |
| ACPI_OPERAND_OBJECT *Operand0, |
| ACPI_OPERAND_OBJECT *Operand1, |
| ACPI_OPERAND_OBJECT **ActualReturnDesc, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_OPERAND_OBJECT *LocalOperand0 = Operand0; |
| ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1; |
| ACPI_OPERAND_OBJECT *TempOperand1 = NULL; |
| ACPI_OPERAND_OBJECT *ReturnDesc; |
| char *Buffer; |
| ACPI_OBJECT_TYPE Operand0Type; |
| ACPI_OBJECT_TYPE Operand1Type; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (ExDoConcatenate); |
| |
| |
| /* Operand 0 preprocessing */ |
| |
| switch (Operand0->Common.Type) |
| { |
| case ACPI_TYPE_INTEGER: |
| case ACPI_TYPE_STRING: |
| case ACPI_TYPE_BUFFER: |
| |
| Operand0Type = Operand0->Common.Type; |
| break; |
| |
| default: |
| |
| /* For all other types, get the "object type" string */ |
| |
| Status = AcpiExConvertToObjectTypeString ( |
| Operand0, &LocalOperand0); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto Cleanup; |
| } |
| |
| Operand0Type = ACPI_TYPE_STRING; |
| break; |
| } |
| |
| /* Operand 1 preprocessing */ |
| |
| switch (Operand1->Common.Type) |
| { |
| case ACPI_TYPE_INTEGER: |
| case ACPI_TYPE_STRING: |
| case ACPI_TYPE_BUFFER: |
| |
| Operand1Type = Operand1->Common.Type; |
| break; |
| |
| default: |
| |
| /* For all other types, get the "object type" string */ |
| |
| Status = AcpiExConvertToObjectTypeString ( |
| Operand1, &LocalOperand1); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto Cleanup; |
| } |
| |
| Operand1Type = ACPI_TYPE_STRING; |
| break; |
| } |
| |
| /* |
| * Convert the second operand if necessary. The first operand (0) |
| * determines the type of the second operand (1) (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. |
| */ |
| switch (Operand0Type) |
| { |
| case ACPI_TYPE_INTEGER: |
| |
| Status = AcpiExConvertToInteger (LocalOperand1, &TempOperand1, |
| ACPI_IMPLICIT_CONVERSION); |
| break; |
| |
| case ACPI_TYPE_BUFFER: |
| |
| Status = AcpiExConvertToBuffer (LocalOperand1, &TempOperand1); |
| break; |
| |
| case ACPI_TYPE_STRING: |
| |
| switch (Operand1Type) |
| { |
| case ACPI_TYPE_INTEGER: |
| case ACPI_TYPE_STRING: |
| case ACPI_TYPE_BUFFER: |
| |
| /* Other types have already been converted to string */ |
| |
| Status = AcpiExConvertToString ( |
| LocalOperand1, &TempOperand1, ACPI_IMPLICIT_CONVERT_HEX); |
| break; |
| |
| default: |
| |
| Status = AE_OK; |
| break; |
| } |
| break; |
| |
| default: |
| |
| ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X", |
| Operand0->Common.Type)); |
| Status = AE_AML_INTERNAL; |
| } |
| |
| if (ACPI_FAILURE (Status)) |
| { |
| goto Cleanup; |
| } |
| |
| /* Take care with any newly created operand objects */ |
| |
| if ((LocalOperand1 != Operand1) && |
| (LocalOperand1 != TempOperand1)) |
| { |
| AcpiUtRemoveReference (LocalOperand1); |
| } |
| |
| LocalOperand1 = TempOperand1; |
| |
| /* |
| * Both operands are now known to be the same object type |
| * (Both are Integer, String, or Buffer), and we can now perform |
| * the concatenation. |
| * |
| * There are three cases to handle, as per the ACPI spec: |
| * |
| * 1) Two Integers concatenated to produce a new Buffer |
| * 2) Two Strings concatenated to produce a new String |
| * 3) Two Buffers concatenated to produce a new Buffer |
| */ |
| switch (Operand0Type) |
| { |
| case ACPI_TYPE_INTEGER: |
| |
| /* Result of two Integers is a Buffer */ |
| /* Need enough buffer space for two integers */ |
| |
| ReturnDesc = AcpiUtCreateBufferObject ( |
| (ACPI_SIZE) ACPI_MUL_2 (AcpiGbl_IntegerByteWidth)); |
| if (!ReturnDesc) |
| { |
| Status = AE_NO_MEMORY; |
| goto Cleanup; |
| } |
| |
| Buffer = (char *) ReturnDesc->Buffer.Pointer; |
| |
| /* Copy the first integer, LSB first */ |
| |
| memcpy (Buffer, &Operand0->Integer.Value, |
| AcpiGbl_IntegerByteWidth); |
| |
| /* Copy the second integer (LSB first) after the first */ |
| |
| memcpy (Buffer + AcpiGbl_IntegerByteWidth, |
| &LocalOperand1->Integer.Value, AcpiGbl_IntegerByteWidth); |
| break; |
| |
| case ACPI_TYPE_STRING: |
| |
| /* Result of two Strings is a String */ |
| |
| ReturnDesc = AcpiUtCreateStringObject ( |
| ((ACPI_SIZE) LocalOperand0->String.Length + |
| LocalOperand1->String.Length)); |
| if (!ReturnDesc) |
| { |
| Status = AE_NO_MEMORY; |
| goto Cleanup; |
| } |
| |
| Buffer = ReturnDesc->String.Pointer; |
| |
| /* Concatenate the strings */ |
| |
| strcpy (Buffer, LocalOperand0->String.Pointer); |
| strcat (Buffer, LocalOperand1->String.Pointer); |
| break; |
| |
| case ACPI_TYPE_BUFFER: |
| |
| /* Result of two Buffers is a Buffer */ |
| |
| ReturnDesc = AcpiUtCreateBufferObject ( |
| ((ACPI_SIZE) Operand0->Buffer.Length + |
| LocalOperand1->Buffer.Length)); |
| if (!ReturnDesc) |
| { |
| Status = AE_NO_MEMORY; |
| goto Cleanup; |
| } |
| |
| Buffer = (char *) ReturnDesc->Buffer.Pointer; |
| |
| /* Concatenate the buffers */ |
| |
| memcpy (Buffer, Operand0->Buffer.Pointer, |
| Operand0->Buffer.Length); |
| memcpy (Buffer + Operand0->Buffer.Length, |
| LocalOperand1->Buffer.Pointer, |
| LocalOperand1->Buffer.Length); |
| break; |
| |
| default: |
| |
| /* Invalid object type, should not happen here */ |
| |
| ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X", |
| Operand0->Common.Type)); |
| Status = AE_AML_INTERNAL; |
| goto Cleanup; |
| } |
| |
| *ActualReturnDesc = ReturnDesc; |
| |
| Cleanup: |
| if (LocalOperand0 != Operand0) |
| { |
| AcpiUtRemoveReference (LocalOperand0); |
| } |
| |
| if (LocalOperand1 != Operand1) |
| { |
| AcpiUtRemoveReference (LocalOperand1); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExConvertToObjectTypeString |
| * |
| * PARAMETERS: ObjDesc - Object to be converted |
| * ReturnDesc - Where to place the return object |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Convert an object of arbitrary type to a string object that |
| * contains the namestring for the object. Used for the |
| * concatenate operator. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiExConvertToObjectTypeString ( |
| ACPI_OPERAND_OBJECT *ObjDesc, |
| ACPI_OPERAND_OBJECT **ResultDesc) |
| { |
| ACPI_OPERAND_OBJECT *ReturnDesc; |
| const char *TypeString; |
| |
| |
| TypeString = AcpiUtGetTypeName (ObjDesc->Common.Type); |
| |
| ReturnDesc = AcpiUtCreateStringObject ( |
| ((ACPI_SIZE) strlen (TypeString) + 9)); /* 9 For "[ Object]" */ |
| if (!ReturnDesc) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| strcpy (ReturnDesc->String.Pointer, "["); |
| strcat (ReturnDesc->String.Pointer, TypeString); |
| strcat (ReturnDesc->String.Pointer, " Object]"); |
| |
| *ResultDesc = ReturnDesc; |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExConcatTemplate |
| * |
| * PARAMETERS: Operand0 - First source object |
| * Operand1 - Second source object |
| * ActualReturnDesc - Where to place the return object |
| * WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Concatenate two resource templates |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExConcatTemplate ( |
| ACPI_OPERAND_OBJECT *Operand0, |
| ACPI_OPERAND_OBJECT *Operand1, |
| ACPI_OPERAND_OBJECT **ActualReturnDesc, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_STATUS Status; |
| ACPI_OPERAND_OBJECT *ReturnDesc; |
| UINT8 *NewBuf; |
| UINT8 *EndTag; |
| ACPI_SIZE Length0; |
| ACPI_SIZE Length1; |
| ACPI_SIZE NewLength; |
| |
| |
| ACPI_FUNCTION_TRACE (ExConcatTemplate); |
| |
| |
| /* |
| * Find the EndTag descriptor in each resource template. |
| * Note1: returned pointers point TO the EndTag, not past it. |
| * Note2: zero-length buffers are allowed; treated like one EndTag |
| */ |
| |
| /* Get the length of the first resource template */ |
| |
| Status = AcpiUtGetResourceEndTag (Operand0, &EndTag); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Length0 = ACPI_PTR_DIFF (EndTag, Operand0->Buffer.Pointer); |
| |
| /* Get the length of the second resource template */ |
| |
| Status = AcpiUtGetResourceEndTag (Operand1, &EndTag); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Length1 = ACPI_PTR_DIFF (EndTag, Operand1->Buffer.Pointer); |
| |
| /* Combine both lengths, minimum size will be 2 for EndTag */ |
| |
| NewLength = Length0 + Length1 + sizeof (AML_RESOURCE_END_TAG); |
| |
| /* Create a new buffer object for the result (with one EndTag) */ |
| |
| ReturnDesc = AcpiUtCreateBufferObject (NewLength); |
| if (!ReturnDesc) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| /* |
| * Copy the templates to the new buffer, 0 first, then 1 follows. One |
| * EndTag descriptor is copied from Operand1. |
| */ |
| NewBuf = ReturnDesc->Buffer.Pointer; |
| memcpy (NewBuf, Operand0->Buffer.Pointer, Length0); |
| memcpy (NewBuf + Length0, Operand1->Buffer.Pointer, Length1); |
| |
| /* Insert EndTag and set the checksum to zero, means "ignore checksum" */ |
| |
| NewBuf[NewLength - 1] = 0; |
| NewBuf[NewLength - 2] = ACPI_RESOURCE_NAME_END_TAG | 1; |
| |
| /* Return the completed resource template */ |
| |
| *ActualReturnDesc = ReturnDesc; |
| return_ACPI_STATUS (AE_OK); |
| } |
