2018-03-14 23:13:07 +00:00
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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2005-04-16 22:20:36 +00:00
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/******************************************************************************
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*
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* Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
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*
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2018-01-04 18:06:38 +00:00
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* Copyright (C) 2000 - 2018, Intel Corp.
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2005-04-16 22:20:36 +00:00
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*
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2018-03-14 23:13:07 +00:00
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*****************************************************************************/
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2005-04-16 22:20:36 +00:00
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#include <acpi/acpi.h>
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2009-01-09 05:30:03 +00:00
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#include "accommon.h"
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#include "acinterp.h"
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#include "amlcode.h"
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2005-04-16 22:20:36 +00:00
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#define _COMPONENT ACPI_EXECUTER
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2005-08-05 04:44:28 +00:00
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ACPI_MODULE_NAME("exmisc")
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2005-04-16 22:20:36 +00:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_get_object_reference
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*
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* PARAMETERS: obj_desc - Create a reference to this object
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* return_desc - Where to store the reference
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* walk_state - Current state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Obtain and return a "reference" to the target object
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* Common code for the ref_of_op and the cond_ref_of_op.
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*
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******************************************************************************/
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acpi_status
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2005-08-05 04:44:28 +00:00
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acpi_ex_get_object_reference(union acpi_operand_object *obj_desc,
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union acpi_operand_object **return_desc,
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struct acpi_walk_state *walk_state)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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union acpi_operand_object *reference_obj;
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union acpi_operand_object *referenced_obj;
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2005-04-16 22:20:36 +00:00
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ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-21 21:15:00 +00:00
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ACPI_FUNCTION_TRACE_PTR(ex_get_object_reference, obj_desc);
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2005-04-16 22:20:36 +00:00
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*return_desc = NULL;
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2005-08-05 04:44:28 +00:00
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switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
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2005-04-16 22:20:36 +00:00
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case ACPI_DESC_TYPE_OPERAND:
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2009-02-18 06:44:03 +00:00
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if (obj_desc->common.type != ACPI_TYPE_LOCAL_REFERENCE) {
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2005-08-05 04:44:28 +00:00
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return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
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2005-04-16 22:20:36 +00:00
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}
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/*
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* Must be a reference to a Local or Arg
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*/
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2008-09-27 03:08:41 +00:00
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switch (obj_desc->reference.class) {
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case ACPI_REFCLASS_LOCAL:
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case ACPI_REFCLASS_ARG:
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case ACPI_REFCLASS_DEBUG:
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2005-04-16 22:20:36 +00:00
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/* The referenced object is the pseudo-node for the local/arg */
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referenced_obj = obj_desc->reference.object;
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break;
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default:
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2015-12-29 05:55:05 +00:00
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ACPI_ERROR((AE_INFO, "Invalid Reference Class 0x%2.2X",
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2008-09-27 03:08:41 +00:00
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obj_desc->reference.class));
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2015-12-29 05:55:05 +00:00
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return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
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2005-04-16 22:20:36 +00:00
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}
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break;
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case ACPI_DESC_TYPE_NAMED:
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/*
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* A named reference that has already been resolved to a Node
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*/
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referenced_obj = obj_desc;
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break;
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default:
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2010-03-05 09:56:40 +00:00
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ACPI_ERROR((AE_INFO, "Invalid descriptor type 0x%X",
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2006-01-27 21:43:00 +00:00
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ACPI_GET_DESCRIPTOR_TYPE(obj_desc)));
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2005-08-05 04:44:28 +00:00
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return_ACPI_STATUS(AE_TYPE);
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2005-04-16 22:20:36 +00:00
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}
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/* Create a new reference object */
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2005-08-05 04:44:28 +00:00
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reference_obj =
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acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE);
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2005-04-16 22:20:36 +00:00
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if (!reference_obj) {
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2005-08-05 04:44:28 +00:00
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return_ACPI_STATUS(AE_NO_MEMORY);
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2005-04-16 22:20:36 +00:00
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}
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2008-09-27 03:08:41 +00:00
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reference_obj->reference.class = ACPI_REFCLASS_REFOF;
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2005-04-16 22:20:36 +00:00
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reference_obj->reference.object = referenced_obj;
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*return_desc = reference_obj;
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2005-08-05 04:44:28 +00:00
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"Object %p Type [%s], returning Reference %p\n",
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obj_desc, acpi_ut_get_object_type_name(obj_desc),
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*return_desc));
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2005-04-16 22:20:36 +00:00
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2005-08-05 04:44:28 +00:00
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return_ACPI_STATUS(AE_OK);
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2005-04-16 22:20:36 +00:00
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_do_math_op
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*
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2012-07-12 01:40:10 +00:00
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* PARAMETERS: opcode - AML opcode
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* integer0 - Integer operand #0
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* integer1 - Integer operand #1
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2005-04-16 22:20:36 +00:00
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*
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* RETURN: Integer result of the operation
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*
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* DESCRIPTION: Execute a math AML opcode. The purpose of having all of the
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* math functions here is to prevent a lot of pointer dereferencing
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* to obtain the operands.
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*
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******************************************************************************/
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2010-01-21 02:06:32 +00:00
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u64 acpi_ex_do_math_op(u16 opcode, u64 integer0, u64 integer1)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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ACPI_FUNCTION_ENTRY();
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2005-04-16 22:20:36 +00:00
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switch (opcode) {
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2005-08-05 04:44:28 +00:00
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case AML_ADD_OP: /* Add (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (integer0 + integer1);
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2005-08-05 04:44:28 +00:00
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case AML_BIT_AND_OP: /* And (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (integer0 & integer1);
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2005-08-05 04:44:28 +00:00
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case AML_BIT_NAND_OP: /* NAnd (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (~(integer0 & integer1));
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2005-08-05 04:44:28 +00:00
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case AML_BIT_OR_OP: /* Or (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (integer0 | integer1);
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2005-08-05 04:44:28 +00:00
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case AML_BIT_NOR_OP: /* NOr (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (~(integer0 | integer1));
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2005-08-05 04:44:28 +00:00
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case AML_BIT_XOR_OP: /* XOr (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (integer0 ^ integer1);
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2005-08-05 04:44:28 +00:00
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case AML_MULTIPLY_OP: /* Multiply (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (integer0 * integer1);
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2005-08-05 04:44:28 +00:00
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case AML_SHIFT_LEFT_OP: /* shift_left (Operand, shift_count, Result) */
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2005-04-16 22:20:36 +00:00
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2006-05-26 20:36:00 +00:00
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/*
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* We need to check if the shiftcount is larger than the integer bit
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* width since the behavior of this is not well-defined in the C language.
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*/
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if (integer1 >= acpi_gbl_integer_bit_width) {
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return (0);
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}
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2005-04-16 22:20:36 +00:00
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return (integer0 << integer1);
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2005-08-05 04:44:28 +00:00
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case AML_SHIFT_RIGHT_OP: /* shift_right (Operand, shift_count, Result) */
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2005-04-16 22:20:36 +00:00
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2006-05-26 20:36:00 +00:00
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/*
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* We need to check if the shiftcount is larger than the integer bit
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* width since the behavior of this is not well-defined in the C language.
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*/
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if (integer1 >= acpi_gbl_integer_bit_width) {
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return (0);
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}
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2005-04-16 22:20:36 +00:00
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return (integer0 >> integer1);
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2005-08-05 04:44:28 +00:00
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case AML_SUBTRACT_OP: /* Subtract (Integer0, Integer1, Result) */
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2005-04-16 22:20:36 +00:00
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return (integer0 - integer1);
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default:
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return (0);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_do_logical_numeric_op
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*
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2012-07-12 01:40:10 +00:00
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* PARAMETERS: opcode - AML opcode
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* integer0 - Integer operand #0
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* integer1 - Integer operand #1
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2005-04-16 22:20:36 +00:00
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* logical_result - TRUE/FALSE result of the operation
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute a logical "Numeric" AML opcode. For these Numeric
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* operators (LAnd and LOr), both operands must be integers.
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*
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* Note: cleanest machine code seems to be produced by the code
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* below, rather than using statements of the form:
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* Result = (Integer0 && Integer1);
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*
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******************************************************************************/
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acpi_status
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2005-08-05 04:44:28 +00:00
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acpi_ex_do_logical_numeric_op(u16 opcode,
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2010-01-21 02:06:32 +00:00
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u64 integer0, u64 integer1, u8 *logical_result)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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acpi_status status = AE_OK;
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u8 local_result = FALSE;
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2005-04-16 22:20:36 +00:00
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ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-21 21:15:00 +00:00
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ACPI_FUNCTION_TRACE(ex_do_logical_numeric_op);
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2005-04-16 22:20:36 +00:00
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switch (opcode) {
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2017-04-26 08:18:40 +00:00
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case AML_LOGICAL_AND_OP: /* LAnd (Integer0, Integer1) */
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2005-04-16 22:20:36 +00:00
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if (integer0 && integer1) {
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local_result = TRUE;
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}
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break;
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2017-04-26 08:18:40 +00:00
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case AML_LOGICAL_OR_OP: /* LOr (Integer0, Integer1) */
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2005-04-16 22:20:36 +00:00
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if (integer0 || integer1) {
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local_result = TRUE;
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}
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break;
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default:
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2013-06-08 00:58:14 +00:00
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2017-08-03 06:27:28 +00:00
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ACPI_ERROR((AE_INFO,
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"Invalid numeric logical opcode: %X", opcode));
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2005-04-16 22:20:36 +00:00
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status = AE_AML_INTERNAL;
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break;
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}
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/* Return the logical result and status */
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*logical_result = local_result;
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2005-08-05 04:44:28 +00:00
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return_ACPI_STATUS(status);
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2005-04-16 22:20:36 +00:00
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_do_logical_op
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*
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2012-07-12 01:40:10 +00:00
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* PARAMETERS: opcode - AML opcode
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* operand0 - operand #0
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* operand1 - operand #1
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2005-04-16 22:20:36 +00:00
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* logical_result - TRUE/FALSE result of the operation
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*
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* RETURN: Status
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*
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|
|
* DESCRIPTION: Execute a logical AML opcode. The purpose of having all of the
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|
|
|
* functions here is to prevent a lot of pointer dereferencing
|
|
|
|
* to obtain the operands and to simplify the generation of the
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* logical value. For the Numeric operators (LAnd and LOr), both
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* operands must be integers. For the other logical operators,
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* 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
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ex_do_logical_op(u16 opcode,
|
|
|
|
union acpi_operand_object *operand0,
|
|
|
|
union acpi_operand_object *operand1, u8 * logical_result)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
union acpi_operand_object *local_operand1 = operand1;
|
2010-01-21 02:06:32 +00:00
|
|
|
u64 integer0;
|
|
|
|
u64 integer1;
|
2005-08-05 04:44:28 +00:00
|
|
|
u32 length0;
|
|
|
|
u32 length1;
|
|
|
|
acpi_status status = AE_OK;
|
|
|
|
u8 local_result = FALSE;
|
|
|
|
int compare;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-21 21:15:00 +00:00
|
|
|
ACPI_FUNCTION_TRACE(ex_do_logical_op);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
2012-10-31 02:26:55 +00:00
|
|
|
* Convert the second operand if necessary. The first operand
|
2005-04-16 22:20:36 +00:00
|
|
|
* 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.
|
|
|
|
*/
|
2009-02-18 06:44:03 +00:00
|
|
|
switch (operand0->common.type) {
|
2005-04-16 22:20:36 +00:00
|
|
|
case ACPI_TYPE_INTEGER:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2016-09-07 06:14:30 +00:00
|
|
|
status = acpi_ex_convert_to_integer(operand1, &local_operand1,
|
2017-09-20 02:00:36 +00:00
|
|
|
ACPI_IMPLICIT_CONVERSION);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ACPI_TYPE_STRING:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2015-12-29 05:54:36 +00:00
|
|
|
status =
|
|
|
|
acpi_ex_convert_to_string(operand1, &local_operand1,
|
|
|
|
ACPI_IMPLICIT_CONVERT_HEX);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
status = acpi_ex_convert_to_buffer(operand1, &local_operand1);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2017-08-03 06:27:28 +00:00
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
"Invalid object type for logical operator: %X",
|
|
|
|
operand0->common.type));
|
2005-04-16 22:20:36 +00:00
|
|
|
status = AE_AML_INTERNAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
if (ACPI_FAILURE(status)) {
|
2005-04-16 22:20:36 +00:00
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Two cases: 1) Both Integers, 2) Both Strings or Buffers
|
|
|
|
*/
|
2009-02-18 06:44:03 +00:00
|
|
|
if (operand0->common.type == ACPI_TYPE_INTEGER) {
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* 1) Both operands are of type integer
|
|
|
|
* Note: local_operand1 may have changed above
|
|
|
|
*/
|
|
|
|
integer0 = operand0->integer.value;
|
|
|
|
integer1 = local_operand1->integer.value;
|
|
|
|
|
|
|
|
switch (opcode) {
|
2017-04-26 08:18:40 +00:00
|
|
|
case AML_LOGICAL_EQUAL_OP: /* LEqual (Operand0, Operand1) */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (integer0 == integer1) {
|
|
|
|
local_result = TRUE;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2017-04-26 08:18:40 +00:00
|
|
|
case AML_LOGICAL_GREATER_OP: /* LGreater (Operand0, Operand1) */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (integer0 > integer1) {
|
|
|
|
local_result = TRUE;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2017-04-26 08:18:40 +00:00
|
|
|
case AML_LOGICAL_LESS_OP: /* LLess (Operand0, Operand1) */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (integer0 < integer1) {
|
|
|
|
local_result = TRUE;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2017-08-03 06:27:28 +00:00
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
"Invalid comparison opcode: %X", opcode));
|
2005-04-16 22:20:36 +00:00
|
|
|
status = AE_AML_INTERNAL;
|
|
|
|
break;
|
|
|
|
}
|
2005-08-05 04:44:28 +00:00
|
|
|
} else {
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* 2) Both operands are Strings or both are Buffers
|
|
|
|
* Note: Code below takes advantage of common Buffer/String
|
|
|
|
* object fields. local_operand1 may have changed above. Use
|
|
|
|
* memcmp to handle nulls in buffers.
|
|
|
|
*/
|
|
|
|
length0 = operand0->buffer.length;
|
|
|
|
length1 = local_operand1->buffer.length;
|
|
|
|
|
|
|
|
/* Lexicographic compare: compare the data bytes */
|
|
|
|
|
2015-07-01 06:45:11 +00:00
|
|
|
compare = memcmp(operand0->buffer.pointer,
|
|
|
|
local_operand1->buffer.pointer,
|
|
|
|
(length0 > length1) ? length1 : length0);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
switch (opcode) {
|
2017-04-26 08:18:40 +00:00
|
|
|
case AML_LOGICAL_EQUAL_OP: /* LEqual (Operand0, Operand1) */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* Length and all bytes must be equal */
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
if ((length0 == length1) && (compare == 0)) {
|
2006-10-02 04:00:00 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* Length and all bytes match ==> TRUE */
|
|
|
|
|
|
|
|
local_result = TRUE;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2017-04-26 08:18:40 +00:00
|
|
|
case AML_LOGICAL_GREATER_OP: /* LGreater (Operand0, Operand1) */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (compare > 0) {
|
|
|
|
local_result = TRUE;
|
2005-08-05 04:44:28 +00:00
|
|
|
goto cleanup; /* TRUE */
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
if (compare < 0) {
|
2005-08-05 04:44:28 +00:00
|
|
|
goto cleanup; /* FALSE */
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Bytes match (to shortest length), compare lengths */
|
|
|
|
|
|
|
|
if (length0 > length1) {
|
|
|
|
local_result = TRUE;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2017-04-26 08:18:40 +00:00
|
|
|
case AML_LOGICAL_LESS_OP: /* LLess (Operand0, Operand1) */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (compare > 0) {
|
2005-08-05 04:44:28 +00:00
|
|
|
goto cleanup; /* FALSE */
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
if (compare < 0) {
|
|
|
|
local_result = TRUE;
|
2005-08-05 04:44:28 +00:00
|
|
|
goto cleanup; /* TRUE */
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Bytes match (to shortest length), compare lengths */
|
|
|
|
|
|
|
|
if (length0 < length1) {
|
|
|
|
local_result = TRUE;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2017-08-03 06:27:28 +00:00
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
"Invalid comparison opcode: %X", opcode));
|
2005-04-16 22:20:36 +00:00
|
|
|
status = AE_AML_INTERNAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-10-29 01:30:02 +00:00
|
|
|
cleanup:
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* New object was created if implicit conversion performed - delete */
|
|
|
|
|
|
|
|
if (local_operand1 != operand1) {
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ut_remove_reference(local_operand1);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Return the logical result and status */
|
|
|
|
|
|
|
|
*logical_result = local_result;
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|