diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/executer/exmisc.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/executer/exmisc.c | 643 |
1 files changed, 643 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/executer/exmisc.c b/sys/contrib/dev/acpica/components/executer/exmisc.c new file mode 100644 index 000000000000..d05eea88a3ad --- /dev/null +++ b/sys/contrib/dev/acpica/components/executer/exmisc.c @@ -0,0 +1,643 @@ +/****************************************************************************** + * + * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2020, 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. + * + ***************************************************************************** + * + * Alternatively, you may choose to be licensed under the terms of the + * following license: + * + * 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. + * + * 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 MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * 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 DAMAGE. + * + * Alternatively, you may choose to be licensed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + *****************************************************************************/ + +#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/amlcode.h> + + +#define _COMPONENT ACPI_EXECUTER + ACPI_MODULE_NAME ("exmisc") + + +/******************************************************************************* + * + * FUNCTION: AcpiExGetObjectReference + * + * PARAMETERS: ObjDesc - Create a reference to this object + * ReturnDesc - Where to store the reference + * WalkState - Current state + * + * RETURN: Status + * + * DESCRIPTION: Obtain and return a "reference" to the target object + * Common code for the RefOfOp and the CondRefOfOp. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExGetObjectReference ( + ACPI_OPERAND_OBJECT *ObjDesc, + ACPI_OPERAND_OBJECT **ReturnDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT *ReferenceObj; + ACPI_OPERAND_OBJECT *ReferencedObj; + + + ACPI_FUNCTION_TRACE_PTR (ExGetObjectReference, ObjDesc); + + + *ReturnDesc = NULL; + + switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc)) + { + case ACPI_DESC_TYPE_OPERAND: + + if (ObjDesc->Common.Type != ACPI_TYPE_LOCAL_REFERENCE) + { + return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + } + + /* + * Must be a reference to a Local or Arg + */ + switch (ObjDesc->Reference.Class) + { + case ACPI_REFCLASS_LOCAL: + case ACPI_REFCLASS_ARG: + case ACPI_REFCLASS_DEBUG: + + /* The referenced object is the pseudo-node for the local/arg */ + + ReferencedObj = ObjDesc->Reference.Object; + break; + + default: + + ACPI_ERROR ((AE_INFO, "Invalid Reference Class 0x%2.2X", + ObjDesc->Reference.Class)); + return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + } + break; + + case ACPI_DESC_TYPE_NAMED: + /* + * A named reference that has already been resolved to a Node + */ + ReferencedObj = ObjDesc; + break; + + default: + + ACPI_ERROR ((AE_INFO, "Invalid descriptor type 0x%X", + ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))); + return_ACPI_STATUS (AE_TYPE); + } + + + /* Create a new reference object */ + + ReferenceObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); + if (!ReferenceObj) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + ReferenceObj->Reference.Class = ACPI_REFCLASS_REFOF; + ReferenceObj->Reference.Object = ReferencedObj; + *ReturnDesc = ReferenceObj; + + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, + "Object %p Type [%s], returning Reference %p\n", + ObjDesc, AcpiUtGetObjectTypeName (ObjDesc), *ReturnDesc)); + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDoMathOp + * + * PARAMETERS: Opcode - AML opcode + * Integer0 - Integer operand #0 + * Integer1 - Integer operand #1 + * + * RETURN: Integer result of the operation + * + * DESCRIPTION: Execute a math AML opcode. The purpose of having all of the + * math functions here is to prevent a lot of pointer dereferencing + * to obtain the operands. + * + ******************************************************************************/ + +UINT64 +AcpiExDoMathOp ( + UINT16 Opcode, + UINT64 Integer0, + UINT64 Integer1) +{ + + ACPI_FUNCTION_ENTRY (); + + + switch (Opcode) + { + case AML_ADD_OP: /* Add (Integer0, Integer1, Result) */ + + return (Integer0 + Integer1); + + case AML_BIT_AND_OP: /* And (Integer0, Integer1, Result) */ + + return (Integer0 & Integer1); + + case AML_BIT_NAND_OP: /* NAnd (Integer0, Integer1, Result) */ + + return (~(Integer0 & Integer1)); + + case AML_BIT_OR_OP: /* Or (Integer0, Integer1, Result) */ + + return (Integer0 | Integer1); + + case AML_BIT_NOR_OP: /* NOr (Integer0, Integer1, Result) */ + + return (~(Integer0 | Integer1)); + + case AML_BIT_XOR_OP: /* XOr (Integer0, Integer1, Result) */ + + return (Integer0 ^ Integer1); + + case AML_MULTIPLY_OP: /* Multiply (Integer0, Integer1, Result) */ + + return (Integer0 * Integer1); + + case AML_SHIFT_LEFT_OP: /* ShiftLeft (Operand, ShiftCount, Result)*/ + + /* + * We need to check if the shiftcount is larger than the integer bit + * width since the behavior of this is not well-defined in the C language. + */ + if (Integer1 >= AcpiGbl_IntegerBitWidth) + { + return (0); + } + return (Integer0 << Integer1); + + case AML_SHIFT_RIGHT_OP: /* ShiftRight (Operand, ShiftCount, Result) */ + + /* + * We need to check if the shiftcount is larger than the integer bit + * width since the behavior of this is not well-defined in the C language. + */ + if (Integer1 >= AcpiGbl_IntegerBitWidth) + { + return (0); + } + return (Integer0 >> Integer1); + + case AML_SUBTRACT_OP: /* Subtract (Integer0, Integer1, Result) */ + + return (Integer0 - Integer1); + + default: + + return (0); + } +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDoLogicalNumericOp + * + * PARAMETERS: Opcode - AML opcode + * Integer0 - Integer operand #0 + * Integer1 - Integer operand #1 + * LogicalResult - TRUE/FALSE result of the operation + * + * RETURN: Status + * + * DESCRIPTION: Execute a logical "Numeric" AML opcode. For these Numeric + * operators (LAnd and LOr), both operands must be integers. + * + * Note: cleanest machine code seems to be produced by the code + * below, rather than using statements of the form: + * Result = (Integer0 && Integer1); + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDoLogicalNumericOp ( + UINT16 Opcode, + UINT64 Integer0, + UINT64 Integer1, + BOOLEAN *LogicalResult) +{ + ACPI_STATUS Status = AE_OK; + BOOLEAN LocalResult = FALSE; + + + ACPI_FUNCTION_TRACE (ExDoLogicalNumericOp); + + + switch (Opcode) + { + case AML_LOGICAL_AND_OP: /* LAnd (Integer0, Integer1) */ + + if (Integer0 && Integer1) + { + LocalResult = TRUE; + } + break; + + case AML_LOGICAL_OR_OP: /* LOr (Integer0, Integer1) */ + + if (Integer0 || Integer1) + { + LocalResult = TRUE; + } + break; + + default: + + ACPI_ERROR ((AE_INFO, + "Invalid numeric logical opcode: %X", Opcode)); + Status = AE_AML_INTERNAL; + break; + } + + /* Return the logical result and status */ + + *LogicalResult = LocalResult; + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDoLogicalOp + * + * PARAMETERS: Opcode - AML opcode + * Operand0 - operand #0 + * Operand1 - operand #1 + * LogicalResult - TRUE/FALSE result of the operation + * + * RETURN: Status + * + * DESCRIPTION: Execute a logical AML opcode. The purpose of having all of the + * functions here is to prevent a lot of pointer dereferencing + * to obtain the operands and to simplify the generation of the + * logical value. For the Numeric operators (LAnd and LOr), both + * operands must be integers. For the other logical operators, + * operands can be any combination of Integer/String/Buffer. The + * first operand determines the type to which the second operand + * will be converted. + * + * Note: cleanest machine code seems to be produced by the code + * below, rather than using statements of the form: + * Result = (Operand0 == Operand1); + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDoLogicalOp ( + UINT16 Opcode, + ACPI_OPERAND_OBJECT *Operand0, + ACPI_OPERAND_OBJECT *Operand1, + BOOLEAN *LogicalResult) +{ + ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1; + UINT64 Integer0; + UINT64 Integer1; + UINT32 Length0; + UINT32 Length1; + ACPI_STATUS Status = AE_OK; + BOOLEAN LocalResult = FALSE; + int Compare; + + + ACPI_FUNCTION_TRACE (ExDoLogicalOp); + + + /* + * Convert the second operand if necessary. The first operand + * determines the type of the second operand, (See the Data Types + * section of the ACPI 3.0+ specification.) Both object types are + * guaranteed to be either Integer/String/Buffer by the operand + * resolution mechanism. + */ + switch (Operand0->Common.Type) + { + case ACPI_TYPE_INTEGER: + + Status = AcpiExConvertToInteger (Operand1, &LocalOperand1, + ACPI_IMPLICIT_CONVERSION); + break; + + case ACPI_TYPE_STRING: + + Status = AcpiExConvertToString ( + Operand1, &LocalOperand1, ACPI_IMPLICIT_CONVERT_HEX); + break; + + case ACPI_TYPE_BUFFER: + + Status = AcpiExConvertToBuffer (Operand1, &LocalOperand1); + break; + + default: + + ACPI_ERROR ((AE_INFO, + "Invalid object type for logical operator: %X", + Operand0->Common.Type)); + Status = AE_AML_INTERNAL; + break; + } + + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* + * Two cases: 1) Both Integers, 2) Both Strings or Buffers + */ + if (Operand0->Common.Type == ACPI_TYPE_INTEGER) + { + /* + * 1) Both operands are of type integer + * Note: LocalOperand1 may have changed above + */ + Integer0 = Operand0->Integer.Value; + Integer1 = LocalOperand1->Integer.Value; + + switch (Opcode) + { + case AML_LOGICAL_EQUAL_OP: /* LEqual (Operand0, Operand1) */ + + if (Integer0 == Integer1) + { + LocalResult = TRUE; + } + break; + + case AML_LOGICAL_GREATER_OP: /* LGreater (Operand0, Operand1) */ + + if (Integer0 > Integer1) + { + LocalResult = TRUE; + } + break; + + case AML_LOGICAL_LESS_OP: /* LLess (Operand0, Operand1) */ + + if (Integer0 < Integer1) + { + LocalResult = TRUE; + } + break; + + default: + + ACPI_ERROR ((AE_INFO, + "Invalid comparison opcode: %X", Opcode)); + Status = AE_AML_INTERNAL; + break; + } + } + else + { + /* + * 2) Both operands are Strings or both are Buffers + * Note: Code below takes advantage of common Buffer/String + * object fields. LocalOperand1 may have changed above. Use + * memcmp to handle nulls in buffers. + */ + Length0 = Operand0->Buffer.Length; + Length1 = LocalOperand1->Buffer.Length; + + /* Lexicographic compare: compare the data bytes */ + + Compare = memcmp (Operand0->Buffer.Pointer, + LocalOperand1->Buffer.Pointer, + (Length0 > Length1) ? Length1 : Length0); + + switch (Opcode) + { + case AML_LOGICAL_EQUAL_OP: /* LEqual (Operand0, Operand1) */ + + /* Length and all bytes must be equal */ + + if ((Length0 == Length1) && + (Compare == 0)) + { + /* Length and all bytes match ==> TRUE */ + + LocalResult = TRUE; + } + break; + + case AML_LOGICAL_GREATER_OP: /* LGreater (Operand0, Operand1) */ + + if (Compare > 0) + { + LocalResult = TRUE; + goto Cleanup; /* TRUE */ + } + if (Compare < 0) + { + goto Cleanup; /* FALSE */ + } + + /* Bytes match (to shortest length), compare lengths */ + + if (Length0 > Length1) + { + LocalResult = TRUE; + } + break; + + case AML_LOGICAL_LESS_OP: /* LLess (Operand0, Operand1) */ + + if (Compare > 0) + { + goto Cleanup; /* FALSE */ + } + if (Compare < 0) + { + LocalResult = TRUE; + goto Cleanup; /* TRUE */ + } + + /* Bytes match (to shortest length), compare lengths */ + + if (Length0 < Length1) + { + LocalResult = TRUE; + } + break; + + default: + + ACPI_ERROR ((AE_INFO, + "Invalid comparison opcode: %X", Opcode)); + Status = AE_AML_INTERNAL; + break; + } + } + +Cleanup: + + /* New object was created if implicit conversion performed - delete */ + + if (LocalOperand1 != Operand1) + { + AcpiUtRemoveReference (LocalOperand1); + } + + /* Return the logical result and status */ + + *LogicalResult = LocalResult; + return_ACPI_STATUS (Status); +} |