/****************************************************************************** * * Module Name: exconvrt - Object conversion routines * $Revision: 49 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2003, 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. * *****************************************************************************/ /* $DragonFly: src/sys/contrib/dev/acpica/Attic/exconvrt.c,v 1.1 2003/09/24 03:32:15 drhodus Exp $ */ #define __EXCONVRT_C__ #include "acpi.h" #include "acinterp.h" #include "amlcode.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exconvrt") /******************************************************************************* * * FUNCTION: AcpiExConvertToInteger * * PARAMETERS: *ObjDesc - Object to be converted. Must be an * Integer, Buffer, or String * WalkState - Current method state * * RETURN: Status * * DESCRIPTION: Convert an ACPI Object to an integer. * ******************************************************************************/ ACPI_STATUS AcpiExConvertToInteger ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_OPERAND_OBJECT **ResultDesc, ACPI_WALK_STATE *WalkState) { UINT32 i; ACPI_OPERAND_OBJECT *RetDesc; UINT32 Count; UINT8 *Pointer; ACPI_INTEGER Result; ACPI_STATUS Status; ACPI_FUNCTION_TRACE_PTR ("ExConvertToInteger", ObjDesc); switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) { case ACPI_TYPE_INTEGER: *ResultDesc = ObjDesc; return_ACPI_STATUS (AE_OK); case ACPI_TYPE_STRING: Pointer = (UINT8 *) ObjDesc->String.Pointer; Count = ObjDesc->String.Length; break; case ACPI_TYPE_BUFFER: Pointer = ObjDesc->Buffer.Pointer; Count = ObjDesc->Buffer.Length; break; default: return_ACPI_STATUS (AE_TYPE); } /* * Convert the buffer/string to an integer. Note that both buffers and * strings are treated as raw data - we don't convert ascii to hex for * strings. * * There are two terminating conditions for the loop: * 1) The size of an integer has been reached, or * 2) The end of the buffer or string has been reached */ Result = 0; /* Transfer no more than an integer's worth of data */ if (Count > AcpiGbl_IntegerByteWidth) { Count = AcpiGbl_IntegerByteWidth; } /* * String conversion is different than Buffer conversion */ switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) { case ACPI_TYPE_STRING: /* * Convert string to an integer * String must be hexadecimal as per the ACPI specification */ Status = AcpiUtStrtoul64 ((char *) Pointer, 16, &Result); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } break; case ACPI_TYPE_BUFFER: /* * Buffer conversion - we simply grab enough raw data from the * buffer to fill an integer */ for (i = 0; i < Count; i++) { /* * Get next byte and shift it into the Result. * Little endian is used, meaning that the first byte of the buffer * is the LSB of the integer */ Result |= (((ACPI_INTEGER) Pointer[i]) << (i * 8)); } break; default: /* No other types can get here */ break; } /* * Create a new integer */ RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); if (!RetDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Save the Result */ RetDesc->Integer.Value = Result; /* * If we are about to overwrite the original object on the operand stack, * we must remove a reference on the original object because we are * essentially removing it from the stack. */ if (*ResultDesc == ObjDesc) { if (WalkState->Opcode != AML_STORE_OP) { AcpiUtRemoveReference (ObjDesc); } } *ResultDesc = RetDesc; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiExConvertToBuffer * * PARAMETERS: *ObjDesc - Object to be converted. Must be an * Integer, Buffer, or String * WalkState - Current method state * * RETURN: Status * * DESCRIPTION: Convert an ACPI Object to a Buffer * ******************************************************************************/ ACPI_STATUS AcpiExConvertToBuffer ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_OPERAND_OBJECT **ResultDesc, ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT *RetDesc; UINT32 i; UINT8 *NewBuf; ACPI_FUNCTION_TRACE_PTR ("ExConvertToBuffer", ObjDesc); switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) { case ACPI_TYPE_BUFFER: /* No conversion necessary */ *ResultDesc = ObjDesc; return_ACPI_STATUS (AE_OK); case ACPI_TYPE_INTEGER: /* * Create a new Buffer object. * Need enough space for one integer */ RetDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth); if (!RetDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Copy the integer to the buffer */ NewBuf = RetDesc->Buffer.Pointer; for (i = 0; i < AcpiGbl_IntegerByteWidth; i++) { NewBuf[i] = (UINT8) (ObjDesc->Integer.Value >> (i * 8)); } break; case ACPI_TYPE_STRING: /* * Create a new Buffer object * Size will be the string length */ RetDesc = AcpiUtCreateBufferObject ((ACPI_SIZE) ObjDesc->String.Length); if (!RetDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Copy the string to the buffer */ NewBuf = RetDesc->Buffer.Pointer; ACPI_STRNCPY ((char *) NewBuf, (char *) ObjDesc->String.Pointer, ObjDesc->String.Length); break; default: return_ACPI_STATUS (AE_TYPE); } /* Mark buffer initialized */ RetDesc->Common.Flags |= AOPOBJ_DATA_VALID; /* * If we are about to overwrite the original object on the operand stack, * we must remove a reference on the original object because we are * essentially removing it from the stack. */ if (*ResultDesc == ObjDesc) { if (WalkState->Opcode != AML_STORE_OP) { AcpiUtRemoveReference (ObjDesc); } } *ResultDesc = RetDesc; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiExConvertAscii * * PARAMETERS: Integer - Value to be converted * Base - 10 or 16 * String - Where the string is returned * DataWidth - Size of data item to be converted * * RETURN: Actual string length * * DESCRIPTION: Convert an ACPI Integer to a hex or decimal string * ******************************************************************************/ UINT32 AcpiExConvertToAscii ( ACPI_INTEGER Integer, UINT32 Base, UINT8 *String, UINT8 DataWidth) { UINT32 i; UINT32 j; UINT32 k = 0; char HexDigit; ACPI_INTEGER Digit; UINT32 Remainder; UINT32 Length; BOOLEAN LeadingZero; ACPI_FUNCTION_ENTRY (); if (DataWidth < sizeof (ACPI_INTEGER)) { LeadingZero = FALSE; Length = DataWidth; } else { LeadingZero = TRUE; Length = sizeof (ACPI_INTEGER); } switch (Base) { case 10: Remainder = 0; for (i = ACPI_MAX_DECIMAL_DIGITS; i > 0 ; i--) { /* Divide by nth factor of 10 */ Digit = Integer; for (j = 1; j < i; j++) { (void) AcpiUtShortDivide (&Digit, 10, &Digit, &Remainder); } /* Create the decimal digit */ if (Digit != 0) { LeadingZero = FALSE; } if (!LeadingZero) { String[k] = (UINT8) (ACPI_ASCII_ZERO + Remainder); k++; } } break; case 16: /* Copy the integer to the buffer */ for (i = 0, j = ((Length * 2) -1); i < (Length * 2); i++, j--) { HexDigit = AcpiUtHexToAsciiChar (Integer, (j * 4)); if (HexDigit != ACPI_ASCII_ZERO) { LeadingZero = FALSE; } if (!LeadingZero) { String[k] = (UINT8) HexDigit; k++; } } break; default: break; } /* * Since leading zeros are supressed, we must check for the case where * the integer equals 0. * * Finally, null terminate the string and return the length */ if (!k) { String [0] = ACPI_ASCII_ZERO; k = 1; } String [k] = 0; return (k); } /******************************************************************************* * * FUNCTION: AcpiExConvertToString * * PARAMETERS: *ObjDesc - Object to be converted. Must be an * Integer, Buffer, or String * WalkState - Current method state * * RETURN: Status * * DESCRIPTION: Convert an ACPI Object to a string * ******************************************************************************/ ACPI_STATUS AcpiExConvertToString ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_OPERAND_OBJECT **ResultDesc, UINT32 Base, UINT32 MaxLength, ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT *RetDesc; UINT32 i; UINT32 StringLength; UINT8 *NewBuf; UINT8 *Pointer; ACPI_FUNCTION_TRACE_PTR ("ExConvertToString", ObjDesc); switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) { case ACPI_TYPE_STRING: if (MaxLength >= ObjDesc->String.Length) { *ResultDesc = ObjDesc; return_ACPI_STATUS (AE_OK); } else { /* Must copy the string first and then truncate it */ return_ACPI_STATUS (AE_NOT_IMPLEMENTED); } case ACPI_TYPE_INTEGER: StringLength = AcpiGbl_IntegerByteWidth * 2; if (Base == 10) { StringLength = ACPI_MAX_DECIMAL_DIGITS; } /* * Create a new String */ RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING); if (!RetDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Need enough space for one ASCII integer plus null terminator */ NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1); if (!NewBuf) { ACPI_REPORT_ERROR (("ExConvertToString: Buffer allocation failure\n")); AcpiUtRemoveReference (RetDesc); return_ACPI_STATUS (AE_NO_MEMORY); } /* Convert */ i = AcpiExConvertToAscii (ObjDesc->Integer.Value, Base, NewBuf, sizeof (ACPI_INTEGER)); /* Null terminate at the correct place */ if (MaxLength < i) { NewBuf[MaxLength] = 0; RetDesc->String.Length = MaxLength; } else { NewBuf [i] = 0; RetDesc->String.Length = i; } RetDesc->Buffer.Pointer = NewBuf; break; case ACPI_TYPE_BUFFER: /* Find the string length */ Pointer = ObjDesc->Buffer.Pointer; for (StringLength = 0; StringLength < ObjDesc->Buffer.Length; StringLength++) { /* Exit on null terminator */ if (!Pointer[StringLength]) { break; } } if (MaxLength > ACPI_MAX_STRING_CONVERSION) { if (StringLength > ACPI_MAX_STRING_CONVERSION) { return_ACPI_STATUS (AE_AML_STRING_LIMIT); } } /* * Create a new string object */ RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING); if (!RetDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* String length is the lesser of the Max or the actual length */ if (MaxLength < StringLength) { StringLength = MaxLength; } NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1); if (!NewBuf) { ACPI_REPORT_ERROR (("ExConvertToString: Buffer allocation failure\n")); AcpiUtRemoveReference (RetDesc); return_ACPI_STATUS (AE_NO_MEMORY); } /* Copy the appropriate number of buffer characters */ ACPI_MEMCPY (NewBuf, Pointer, StringLength); /* Null terminate */ NewBuf [StringLength] = 0; RetDesc->Buffer.Pointer = NewBuf; RetDesc->String.Length = StringLength; break; default: return_ACPI_STATUS (AE_TYPE); } /* * If we are about to overwrite the original object on the operand stack, * we must remove a reference on the original object because we are * essentially removing it from the stack. */ if (*ResultDesc == ObjDesc) { if (WalkState->Opcode != AML_STORE_OP) { AcpiUtRemoveReference (ObjDesc); } } *ResultDesc = RetDesc; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiExConvertToTargetType * * PARAMETERS: DestinationType - Current type of the destination * SourceDesc - Source object to be converted. * WalkState - Current method state * * RETURN: Status * * DESCRIPTION: Implements "implicit conversion" rules for storing an object. * ******************************************************************************/ ACPI_STATUS AcpiExConvertToTargetType ( ACPI_OBJECT_TYPE DestinationType, ACPI_OPERAND_OBJECT *SourceDesc, ACPI_OPERAND_OBJECT **ResultDesc, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE ("ExConvertToTargetType"); /* Default behavior */ *ResultDesc = SourceDesc; /* * If required by the target, * perform implicit conversion on the source before we store it. */ switch (GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs)) { case ARGI_SIMPLE_TARGET: case ARGI_FIXED_TARGET: case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */ switch (DestinationType) { case ACPI_TYPE_LOCAL_REGION_FIELD: /* * Named field can always handle conversions */ break; default: /* No conversion allowed for these types */ if (DestinationType != ACPI_GET_OBJECT_TYPE (SourceDesc)) { ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Explicit operator, will store (%s) over existing type (%s)\n", AcpiUtGetObjectTypeName (SourceDesc), AcpiUtGetTypeName (DestinationType))); Status = AE_TYPE; } } break; case ARGI_TARGETREF: switch (DestinationType) { case ACPI_TYPE_INTEGER: case ACPI_TYPE_BUFFER_FIELD: case ACPI_TYPE_LOCAL_BANK_FIELD: case ACPI_TYPE_LOCAL_INDEX_FIELD: /* * These types require an Integer operand. We can convert * a Buffer or a String to an Integer if necessary. */ Status = AcpiExConvertToInteger (SourceDesc, ResultDesc, WalkState); break; case ACPI_TYPE_STRING: /* * The operand must be a String. We can convert an * Integer or Buffer if necessary */ Status = AcpiExConvertToString (SourceDesc, ResultDesc, 16, ACPI_UINT32_MAX, WalkState); break; case ACPI_TYPE_BUFFER: /* * The operand must be a Buffer. We can convert an * Integer or String if necessary */ Status = AcpiExConvertToBuffer (SourceDesc, ResultDesc, WalkState); break; default: Status = AE_AML_INTERNAL; break; } break; case ARGI_REFERENCE: /* * CreateXxxxField cases - we are storing the field object into the name */ break; default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Target type ID 0x%X Op %s DestType %s\n", GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs), WalkState->OpInfo->Name, AcpiUtGetTypeName (DestinationType))); Status = AE_AML_INTERNAL; } /* * Source-to-Target conversion semantics: * * If conversion to the target type cannot be performed, then simply * overwrite the target with the new object and type. */ if (Status == AE_TYPE) { Status = AE_OK; } return_ACPI_STATUS (Status); }