195857638SErik Schmauss // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 295b482a8SLen Brown /****************************************************************************** 395b482a8SLen Brown * 495b482a8SLen Brown * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes 595b482a8SLen Brown * 6*612c2932SBob Moore * Copyright (C) 2000 - 2023, Intel Corp. 795b482a8SLen Brown * 895857638SErik Schmauss *****************************************************************************/ 995b482a8SLen Brown 1095b482a8SLen Brown #include <acpi/acpi.h> 11e2f7a777SLen Brown #include "accommon.h" 12e2f7a777SLen Brown #include "acinterp.h" 13e2f7a777SLen Brown #include "amlcode.h" 1495b482a8SLen Brown 1595b482a8SLen Brown #define _COMPONENT ACPI_EXECUTER 1695b482a8SLen Brown ACPI_MODULE_NAME("exmisc") 1795b482a8SLen Brown 1895b482a8SLen Brown /******************************************************************************* 1995b482a8SLen Brown * 2095b482a8SLen Brown * FUNCTION: acpi_ex_get_object_reference 2195b482a8SLen Brown * 2295b482a8SLen Brown * PARAMETERS: obj_desc - Create a reference to this object 2395b482a8SLen Brown * return_desc - Where to store the reference 2495b482a8SLen Brown * walk_state - Current state 2595b482a8SLen Brown * 2695b482a8SLen Brown * RETURN: Status 2795b482a8SLen Brown * 2895b482a8SLen Brown * DESCRIPTION: Obtain and return a "reference" to the target object 2995b482a8SLen Brown * Common code for the ref_of_op and the cond_ref_of_op. 3095b482a8SLen Brown * 3195b482a8SLen Brown ******************************************************************************/ 3295b482a8SLen Brown acpi_status 3395b482a8SLen Brown acpi_ex_get_object_reference(union acpi_operand_object *obj_desc, 3495b482a8SLen Brown union acpi_operand_object **return_desc, 3595b482a8SLen Brown struct acpi_walk_state *walk_state) 3695b482a8SLen Brown { 3795b482a8SLen Brown union acpi_operand_object *reference_obj; 3895b482a8SLen Brown union acpi_operand_object *referenced_obj; 3995b482a8SLen Brown 4095b482a8SLen Brown ACPI_FUNCTION_TRACE_PTR(ex_get_object_reference, obj_desc); 4195b482a8SLen Brown 4295b482a8SLen Brown *return_desc = NULL; 4395b482a8SLen Brown 4495b482a8SLen Brown switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) { 4595b482a8SLen Brown case ACPI_DESC_TYPE_OPERAND: 4695b482a8SLen Brown 473371c19cSBob Moore if (obj_desc->common.type != ACPI_TYPE_LOCAL_REFERENCE) { 4895b482a8SLen Brown return_ACPI_STATUS(AE_AML_OPERAND_TYPE); 4995b482a8SLen Brown } 5095b482a8SLen Brown 5195b482a8SLen Brown /* 5295b482a8SLen Brown * Must be a reference to a Local or Arg 5395b482a8SLen Brown */ 5495b482a8SLen Brown switch (obj_desc->reference.class) { 5595b482a8SLen Brown case ACPI_REFCLASS_LOCAL: 5695b482a8SLen Brown case ACPI_REFCLASS_ARG: 5795b482a8SLen Brown case ACPI_REFCLASS_DEBUG: 5895b482a8SLen Brown 5995b482a8SLen Brown /* The referenced object is the pseudo-node for the local/arg */ 6095b482a8SLen Brown 6195b482a8SLen Brown referenced_obj = obj_desc->reference.object; 6295b482a8SLen Brown break; 6395b482a8SLen Brown 6495b482a8SLen Brown default: 6595b482a8SLen Brown 66395ec731SBob Moore ACPI_ERROR((AE_INFO, "Invalid Reference Class 0x%2.2X", 6795b482a8SLen Brown obj_desc->reference.class)); 68395ec731SBob Moore return_ACPI_STATUS(AE_AML_OPERAND_TYPE); 6995b482a8SLen Brown } 7095b482a8SLen Brown break; 7195b482a8SLen Brown 7295b482a8SLen Brown case ACPI_DESC_TYPE_NAMED: 7395b482a8SLen Brown /* 7495b482a8SLen Brown * A named reference that has already been resolved to a Node 7595b482a8SLen Brown */ 7695b482a8SLen Brown referenced_obj = obj_desc; 7795b482a8SLen Brown break; 7895b482a8SLen Brown 7995b482a8SLen Brown default: 8095b482a8SLen Brown 81f6a22b0bSBob Moore ACPI_ERROR((AE_INFO, "Invalid descriptor type 0x%X", 8295b482a8SLen Brown ACPI_GET_DESCRIPTOR_TYPE(obj_desc))); 8395b482a8SLen Brown return_ACPI_STATUS(AE_TYPE); 8495b482a8SLen Brown } 8595b482a8SLen Brown 8695b482a8SLen Brown /* Create a new reference object */ 8795b482a8SLen Brown 8895b482a8SLen Brown reference_obj = 8995b482a8SLen Brown acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); 9095b482a8SLen Brown if (!reference_obj) { 9195b482a8SLen Brown return_ACPI_STATUS(AE_NO_MEMORY); 9295b482a8SLen Brown } 9395b482a8SLen Brown 9495b482a8SLen Brown reference_obj->reference.class = ACPI_REFCLASS_REFOF; 9595b482a8SLen Brown reference_obj->reference.object = referenced_obj; 9695b482a8SLen Brown *return_desc = reference_obj; 9795b482a8SLen Brown 9895b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_EXEC, 9995b482a8SLen Brown "Object %p Type [%s], returning Reference %p\n", 10095b482a8SLen Brown obj_desc, acpi_ut_get_object_type_name(obj_desc), 10195b482a8SLen Brown *return_desc)); 10295b482a8SLen Brown 10395b482a8SLen Brown return_ACPI_STATUS(AE_OK); 10495b482a8SLen Brown } 10595b482a8SLen Brown 10695b482a8SLen Brown /******************************************************************************* 10795b482a8SLen Brown * 10895b482a8SLen Brown * FUNCTION: acpi_ex_do_math_op 10995b482a8SLen Brown * 110ba494beeSBob Moore * PARAMETERS: opcode - AML opcode 111ba494beeSBob Moore * integer0 - Integer operand #0 112ba494beeSBob Moore * integer1 - Integer operand #1 11395b482a8SLen Brown * 11495b482a8SLen Brown * RETURN: Integer result of the operation 11595b482a8SLen Brown * 11695b482a8SLen Brown * DESCRIPTION: Execute a math AML opcode. The purpose of having all of the 11795b482a8SLen Brown * math functions here is to prevent a lot of pointer dereferencing 11895b482a8SLen Brown * to obtain the operands. 11995b482a8SLen Brown * 12095b482a8SLen Brown ******************************************************************************/ 12195b482a8SLen Brown 1225df7e6cbSBob Moore u64 acpi_ex_do_math_op(u16 opcode, u64 integer0, u64 integer1) 12395b482a8SLen Brown { 12495b482a8SLen Brown 12595b482a8SLen Brown ACPI_FUNCTION_ENTRY(); 12695b482a8SLen Brown 12795b482a8SLen Brown switch (opcode) { 12895b482a8SLen Brown case AML_ADD_OP: /* Add (Integer0, Integer1, Result) */ 12995b482a8SLen Brown 13095b482a8SLen Brown return (integer0 + integer1); 13195b482a8SLen Brown 13295b482a8SLen Brown case AML_BIT_AND_OP: /* And (Integer0, Integer1, Result) */ 13395b482a8SLen Brown 13495b482a8SLen Brown return (integer0 & integer1); 13595b482a8SLen Brown 13695b482a8SLen Brown case AML_BIT_NAND_OP: /* NAnd (Integer0, Integer1, Result) */ 13795b482a8SLen Brown 13895b482a8SLen Brown return (~(integer0 & integer1)); 13995b482a8SLen Brown 14095b482a8SLen Brown case AML_BIT_OR_OP: /* Or (Integer0, Integer1, Result) */ 14195b482a8SLen Brown 14295b482a8SLen Brown return (integer0 | integer1); 14395b482a8SLen Brown 14495b482a8SLen Brown case AML_BIT_NOR_OP: /* NOr (Integer0, Integer1, Result) */ 14595b482a8SLen Brown 14695b482a8SLen Brown return (~(integer0 | integer1)); 14795b482a8SLen Brown 14895b482a8SLen Brown case AML_BIT_XOR_OP: /* XOr (Integer0, Integer1, Result) */ 14995b482a8SLen Brown 15095b482a8SLen Brown return (integer0 ^ integer1); 15195b482a8SLen Brown 15295b482a8SLen Brown case AML_MULTIPLY_OP: /* Multiply (Integer0, Integer1, Result) */ 15395b482a8SLen Brown 15495b482a8SLen Brown return (integer0 * integer1); 15595b482a8SLen Brown 15695b482a8SLen Brown case AML_SHIFT_LEFT_OP: /* shift_left (Operand, shift_count, Result) */ 15795b482a8SLen Brown 15895b482a8SLen Brown /* 15995b482a8SLen Brown * We need to check if the shiftcount is larger than the integer bit 16095b482a8SLen Brown * width since the behavior of this is not well-defined in the C language. 16195b482a8SLen Brown */ 16295b482a8SLen Brown if (integer1 >= acpi_gbl_integer_bit_width) { 16395b482a8SLen Brown return (0); 16495b482a8SLen Brown } 16595b482a8SLen Brown return (integer0 << integer1); 16695b482a8SLen Brown 16795b482a8SLen Brown case AML_SHIFT_RIGHT_OP: /* shift_right (Operand, shift_count, Result) */ 16895b482a8SLen Brown 16995b482a8SLen Brown /* 17095b482a8SLen Brown * We need to check if the shiftcount is larger than the integer bit 17195b482a8SLen Brown * width since the behavior of this is not well-defined in the C language. 17295b482a8SLen Brown */ 17395b482a8SLen Brown if (integer1 >= acpi_gbl_integer_bit_width) { 17495b482a8SLen Brown return (0); 17595b482a8SLen Brown } 17695b482a8SLen Brown return (integer0 >> integer1); 17795b482a8SLen Brown 17895b482a8SLen Brown case AML_SUBTRACT_OP: /* Subtract (Integer0, Integer1, Result) */ 17995b482a8SLen Brown 18095b482a8SLen Brown return (integer0 - integer1); 18195b482a8SLen Brown 18295b482a8SLen Brown default: 18395b482a8SLen Brown 18495b482a8SLen Brown return (0); 18595b482a8SLen Brown } 18695b482a8SLen Brown } 18795b482a8SLen Brown 18895b482a8SLen Brown /******************************************************************************* 18995b482a8SLen Brown * 19095b482a8SLen Brown * FUNCTION: acpi_ex_do_logical_numeric_op 19195b482a8SLen Brown * 192ba494beeSBob Moore * PARAMETERS: opcode - AML opcode 193ba494beeSBob Moore * integer0 - Integer operand #0 194ba494beeSBob Moore * integer1 - Integer operand #1 19595b482a8SLen Brown * logical_result - TRUE/FALSE result of the operation 19695b482a8SLen Brown * 19795b482a8SLen Brown * RETURN: Status 19895b482a8SLen Brown * 19995b482a8SLen Brown * DESCRIPTION: Execute a logical "Numeric" AML opcode. For these Numeric 20095b482a8SLen Brown * operators (LAnd and LOr), both operands must be integers. 20195b482a8SLen Brown * 20295b482a8SLen Brown * Note: cleanest machine code seems to be produced by the code 20395b482a8SLen Brown * below, rather than using statements of the form: 20495b482a8SLen Brown * Result = (Integer0 && Integer1); 20595b482a8SLen Brown * 20695b482a8SLen Brown ******************************************************************************/ 20795b482a8SLen Brown 20895b482a8SLen Brown acpi_status 20995b482a8SLen Brown acpi_ex_do_logical_numeric_op(u16 opcode, 2105df7e6cbSBob Moore u64 integer0, u64 integer1, u8 *logical_result) 21195b482a8SLen Brown { 21295b482a8SLen Brown acpi_status status = AE_OK; 21395b482a8SLen Brown u8 local_result = FALSE; 21495b482a8SLen Brown 21595b482a8SLen Brown ACPI_FUNCTION_TRACE(ex_do_logical_numeric_op); 21695b482a8SLen Brown 21795b482a8SLen Brown switch (opcode) { 2189ff5a21aSBob Moore case AML_LOGICAL_AND_OP: /* LAnd (Integer0, Integer1) */ 21995b482a8SLen Brown 22095b482a8SLen Brown if (integer0 && integer1) { 22195b482a8SLen Brown local_result = TRUE; 22295b482a8SLen Brown } 22395b482a8SLen Brown break; 22495b482a8SLen Brown 2259ff5a21aSBob Moore case AML_LOGICAL_OR_OP: /* LOr (Integer0, Integer1) */ 22695b482a8SLen Brown 22795b482a8SLen Brown if (integer0 || integer1) { 22895b482a8SLen Brown local_result = TRUE; 22995b482a8SLen Brown } 23095b482a8SLen Brown break; 23195b482a8SLen Brown 23295b482a8SLen Brown default: 2331d1ea1b7SChao Guan 234376a588cSBob Moore ACPI_ERROR((AE_INFO, 235376a588cSBob Moore "Invalid numeric logical opcode: %X", opcode)); 23695b482a8SLen Brown status = AE_AML_INTERNAL; 23795b482a8SLen Brown break; 23895b482a8SLen Brown } 23995b482a8SLen Brown 24095b482a8SLen Brown /* Return the logical result and status */ 24195b482a8SLen Brown 24295b482a8SLen Brown *logical_result = local_result; 24395b482a8SLen Brown return_ACPI_STATUS(status); 24495b482a8SLen Brown } 24595b482a8SLen Brown 24695b482a8SLen Brown /******************************************************************************* 24795b482a8SLen Brown * 24895b482a8SLen Brown * FUNCTION: acpi_ex_do_logical_op 24995b482a8SLen Brown * 250ba494beeSBob Moore * PARAMETERS: opcode - AML opcode 251ba494beeSBob Moore * operand0 - operand #0 252ba494beeSBob Moore * operand1 - operand #1 25395b482a8SLen Brown * logical_result - TRUE/FALSE result of the operation 25495b482a8SLen Brown * 25595b482a8SLen Brown * RETURN: Status 25695b482a8SLen Brown * 25795b482a8SLen Brown * DESCRIPTION: Execute a logical AML opcode. The purpose of having all of the 25895b482a8SLen Brown * functions here is to prevent a lot of pointer dereferencing 25995b482a8SLen Brown * to obtain the operands and to simplify the generation of the 26095b482a8SLen Brown * logical value. For the Numeric operators (LAnd and LOr), both 26195b482a8SLen Brown * operands must be integers. For the other logical operators, 26295b482a8SLen Brown * operands can be any combination of Integer/String/Buffer. The 26395b482a8SLen Brown * first operand determines the type to which the second operand 26495b482a8SLen Brown * will be converted. 26595b482a8SLen Brown * 26695b482a8SLen Brown * Note: cleanest machine code seems to be produced by the code 26795b482a8SLen Brown * below, rather than using statements of the form: 26895b482a8SLen Brown * Result = (Operand0 == Operand1); 26995b482a8SLen Brown * 27095b482a8SLen Brown ******************************************************************************/ 27195b482a8SLen Brown 27295b482a8SLen Brown acpi_status 27395b482a8SLen Brown acpi_ex_do_logical_op(u16 opcode, 27495b482a8SLen Brown union acpi_operand_object *operand0, 27595b482a8SLen Brown union acpi_operand_object *operand1, u8 * logical_result) 27695b482a8SLen Brown { 27795b482a8SLen Brown union acpi_operand_object *local_operand1 = operand1; 2785df7e6cbSBob Moore u64 integer0; 2795df7e6cbSBob Moore u64 integer1; 28095b482a8SLen Brown u32 length0; 28195b482a8SLen Brown u32 length1; 28295b482a8SLen Brown acpi_status status = AE_OK; 28395b482a8SLen Brown u8 local_result = FALSE; 28495b482a8SLen Brown int compare; 28595b482a8SLen Brown 28695b482a8SLen Brown ACPI_FUNCTION_TRACE(ex_do_logical_op); 28795b482a8SLen Brown 28895b482a8SLen Brown /* 28995b482a8SLen Brown * Convert the second operand if necessary. The first operand 29095b482a8SLen Brown * determines the type of the second operand, (See the Data Types 29195b482a8SLen Brown * section of the ACPI 3.0+ specification.) Both object types are 29295b482a8SLen Brown * guaranteed to be either Integer/String/Buffer by the operand 29395b482a8SLen Brown * resolution mechanism. 29495b482a8SLen Brown */ 2953371c19cSBob Moore switch (operand0->common.type) { 29695b482a8SLen Brown case ACPI_TYPE_INTEGER: 2971d1ea1b7SChao Guan 2985ebd2eaaSBob Moore status = acpi_ex_convert_to_integer(operand1, &local_operand1, 299fe97d287SBob Moore ACPI_IMPLICIT_CONVERSION); 30095b482a8SLen Brown break; 30195b482a8SLen Brown 30295b482a8SLen Brown case ACPI_TYPE_STRING: 3031d1ea1b7SChao Guan 3041fad8738SBob Moore status = 3051fad8738SBob Moore acpi_ex_convert_to_string(operand1, &local_operand1, 30695b482a8SLen Brown ACPI_IMPLICIT_CONVERT_HEX); 30795b482a8SLen Brown break; 30895b482a8SLen Brown 30995b482a8SLen Brown case ACPI_TYPE_BUFFER: 3101d1ea1b7SChao Guan 31195b482a8SLen Brown status = acpi_ex_convert_to_buffer(operand1, &local_operand1); 31295b482a8SLen Brown break; 31395b482a8SLen Brown 31495b482a8SLen Brown default: 3151d1ea1b7SChao Guan 316376a588cSBob Moore ACPI_ERROR((AE_INFO, 317376a588cSBob Moore "Invalid object type for logical operator: %X", 318376a588cSBob Moore operand0->common.type)); 31995b482a8SLen Brown status = AE_AML_INTERNAL; 32095b482a8SLen Brown break; 32195b482a8SLen Brown } 32295b482a8SLen Brown 32395b482a8SLen Brown if (ACPI_FAILURE(status)) { 32495b482a8SLen Brown goto cleanup; 32595b482a8SLen Brown } 32695b482a8SLen Brown 32795b482a8SLen Brown /* 32895b482a8SLen Brown * Two cases: 1) Both Integers, 2) Both Strings or Buffers 32995b482a8SLen Brown */ 3303371c19cSBob Moore if (operand0->common.type == ACPI_TYPE_INTEGER) { 33195b482a8SLen Brown /* 33295b482a8SLen Brown * 1) Both operands are of type integer 33395b482a8SLen Brown * Note: local_operand1 may have changed above 33495b482a8SLen Brown */ 33595b482a8SLen Brown integer0 = operand0->integer.value; 33695b482a8SLen Brown integer1 = local_operand1->integer.value; 33795b482a8SLen Brown 33895b482a8SLen Brown switch (opcode) { 3399ff5a21aSBob Moore case AML_LOGICAL_EQUAL_OP: /* LEqual (Operand0, Operand1) */ 34095b482a8SLen Brown 34195b482a8SLen Brown if (integer0 == integer1) { 34295b482a8SLen Brown local_result = TRUE; 34395b482a8SLen Brown } 34495b482a8SLen Brown break; 34595b482a8SLen Brown 3469ff5a21aSBob Moore case AML_LOGICAL_GREATER_OP: /* LGreater (Operand0, Operand1) */ 34795b482a8SLen Brown 34895b482a8SLen Brown if (integer0 > integer1) { 34995b482a8SLen Brown local_result = TRUE; 35095b482a8SLen Brown } 35195b482a8SLen Brown break; 35295b482a8SLen Brown 3539ff5a21aSBob Moore case AML_LOGICAL_LESS_OP: /* LLess (Operand0, Operand1) */ 35495b482a8SLen Brown 35595b482a8SLen Brown if (integer0 < integer1) { 35695b482a8SLen Brown local_result = TRUE; 35795b482a8SLen Brown } 35895b482a8SLen Brown break; 35995b482a8SLen Brown 36095b482a8SLen Brown default: 3611d1ea1b7SChao Guan 362376a588cSBob Moore ACPI_ERROR((AE_INFO, 363376a588cSBob Moore "Invalid comparison opcode: %X", opcode)); 36495b482a8SLen Brown status = AE_AML_INTERNAL; 36595b482a8SLen Brown break; 36695b482a8SLen Brown } 36795b482a8SLen Brown } else { 36895b482a8SLen Brown /* 36995b482a8SLen Brown * 2) Both operands are Strings or both are Buffers 37095b482a8SLen Brown * Note: Code below takes advantage of common Buffer/String 37195b482a8SLen Brown * object fields. local_operand1 may have changed above. Use 37295b482a8SLen Brown * memcmp to handle nulls in buffers. 37395b482a8SLen Brown */ 37495b482a8SLen Brown length0 = operand0->buffer.length; 37595b482a8SLen Brown length1 = local_operand1->buffer.length; 37695b482a8SLen Brown 37795b482a8SLen Brown /* Lexicographic compare: compare the data bytes */ 37895b482a8SLen Brown 3794fa4616eSBob Moore compare = memcmp(operand0->buffer.pointer, 38095b482a8SLen Brown local_operand1->buffer.pointer, 38195b482a8SLen Brown (length0 > length1) ? length1 : length0); 38295b482a8SLen Brown 38395b482a8SLen Brown switch (opcode) { 3849ff5a21aSBob Moore case AML_LOGICAL_EQUAL_OP: /* LEqual (Operand0, Operand1) */ 38595b482a8SLen Brown 38695b482a8SLen Brown /* Length and all bytes must be equal */ 38795b482a8SLen Brown 38895b482a8SLen Brown if ((length0 == length1) && (compare == 0)) { 38995b482a8SLen Brown 39095b482a8SLen Brown /* Length and all bytes match ==> TRUE */ 39195b482a8SLen Brown 39295b482a8SLen Brown local_result = TRUE; 39395b482a8SLen Brown } 39495b482a8SLen Brown break; 39595b482a8SLen Brown 3969ff5a21aSBob Moore case AML_LOGICAL_GREATER_OP: /* LGreater (Operand0, Operand1) */ 39795b482a8SLen Brown 39895b482a8SLen Brown if (compare > 0) { 39995b482a8SLen Brown local_result = TRUE; 40095b482a8SLen Brown goto cleanup; /* TRUE */ 40195b482a8SLen Brown } 40295b482a8SLen Brown if (compare < 0) { 40395b482a8SLen Brown goto cleanup; /* FALSE */ 40495b482a8SLen Brown } 40595b482a8SLen Brown 40695b482a8SLen Brown /* Bytes match (to shortest length), compare lengths */ 40795b482a8SLen Brown 40895b482a8SLen Brown if (length0 > length1) { 40995b482a8SLen Brown local_result = TRUE; 41095b482a8SLen Brown } 41195b482a8SLen Brown break; 41295b482a8SLen Brown 4139ff5a21aSBob Moore case AML_LOGICAL_LESS_OP: /* LLess (Operand0, Operand1) */ 41495b482a8SLen Brown 41595b482a8SLen Brown if (compare > 0) { 41695b482a8SLen Brown goto cleanup; /* FALSE */ 41795b482a8SLen Brown } 41895b482a8SLen Brown if (compare < 0) { 41995b482a8SLen Brown local_result = TRUE; 42095b482a8SLen Brown goto cleanup; /* TRUE */ 42195b482a8SLen Brown } 42295b482a8SLen Brown 42395b482a8SLen Brown /* Bytes match (to shortest length), compare lengths */ 42495b482a8SLen Brown 42595b482a8SLen Brown if (length0 < length1) { 42695b482a8SLen Brown local_result = TRUE; 42795b482a8SLen Brown } 42895b482a8SLen Brown break; 42995b482a8SLen Brown 43095b482a8SLen Brown default: 4311d1ea1b7SChao Guan 432376a588cSBob Moore ACPI_ERROR((AE_INFO, 433376a588cSBob Moore "Invalid comparison opcode: %X", opcode)); 43495b482a8SLen Brown status = AE_AML_INTERNAL; 43595b482a8SLen Brown break; 43695b482a8SLen Brown } 43795b482a8SLen Brown } 43895b482a8SLen Brown 43995b482a8SLen Brown cleanup: 44095b482a8SLen Brown 44195b482a8SLen Brown /* New object was created if implicit conversion performed - delete */ 44295b482a8SLen Brown 44395b482a8SLen Brown if (local_operand1 != operand1) { 44495b482a8SLen Brown acpi_ut_remove_reference(local_operand1); 44595b482a8SLen Brown } 44695b482a8SLen Brown 44795b482a8SLen Brown /* Return the logical result and status */ 44895b482a8SLen Brown 44995b482a8SLen Brown *logical_result = local_result; 45095b482a8SLen Brown return_ACPI_STATUS(status); 45195b482a8SLen Brown } 452