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1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
609 lines
16 KiB
C
609 lines
16 KiB
C
/******************************************************************************
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*
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* Module Name: exoparg2 - AML execution - opcodes with 2 arguments
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acparser.h>
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#include <acpi/acinterp.h>
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#include <acpi/acevents.h>
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#include <acpi/amlcode.h>
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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME ("exoparg2")
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/*!
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* Naming convention for AML interpreter execution routines.
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*
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* The routines that begin execution of AML opcodes are named with a common
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* convention based upon the number of arguments, the number of target operands,
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* and whether or not a value is returned:
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*
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* AcpiExOpcode_xA_yT_zR
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*
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* Where:
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*
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* xA - ARGUMENTS: The number of arguments (input operands) that are
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* required for this opcode type (1 through 6 args).
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* yT - TARGETS: The number of targets (output operands) that are required
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* for this opcode type (0, 1, or 2 targets).
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* zR - RETURN VALUE: Indicates whether this opcode type returns a value
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* as the function return (0 or 1).
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*
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* The AcpiExOpcode* functions are called via the Dispatcher component with
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* fully resolved operands.
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!*/
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_opcode_2A_0T_0R
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*
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* PARAMETERS: walk_state - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute opcode with two arguments, no target, and no return
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* value.
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*
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* ALLOCATION: Deletes both operands
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*
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******************************************************************************/
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acpi_status
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acpi_ex_opcode_2A_0T_0R (
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struct acpi_walk_state *walk_state)
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{
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union acpi_operand_object **operand = &walk_state->operands[0];
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struct acpi_namespace_node *node;
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u32 value;
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_0T_0R",
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acpi_ps_get_opcode_name (walk_state->opcode));
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/* Examine the opcode */
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switch (walk_state->opcode) {
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case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */
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/* The first operand is a namespace node */
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node = (struct acpi_namespace_node *) operand[0];
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/* Second value is the notify value */
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value = (u32) operand[1]->integer.value;
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/* Notifies allowed on this object? */
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if (!acpi_ev_is_notify_object (node)) {
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Unexpected notify object type [%s]\n",
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acpi_ut_get_type_name (node->type)));
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status = AE_AML_OPERAND_TYPE;
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break;
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}
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#ifdef ACPI_GPE_NOTIFY_CHECK
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/*
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* GPE method wake/notify check. Here, we want to ensure that we
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* don't receive any "device_wake" Notifies from a GPE _Lxx or _Exx
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* GPE method during system runtime. If we do, the GPE is marked
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* as "wake-only" and disabled.
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*
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* 1) Is the Notify() value == device_wake?
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* 2) Is this a GPE deferred method? (An _Lxx or _Exx method)
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* 3) Did the original GPE happen at system runtime?
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* (versus during wake)
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*
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* If all three cases are true, this is a wake-only GPE that should
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* be disabled at runtime.
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*/
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if (value == 2) /* device_wake */ {
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status = acpi_ev_check_for_wake_only_gpe (walk_state->gpe_event_info);
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if (ACPI_FAILURE (status)) {
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/* AE_WAKE_ONLY_GPE only error, means ignore this notify */
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return_ACPI_STATUS (AE_OK)
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}
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}
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#endif
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/*
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* Dispatch the notify to the appropriate handler
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* NOTE: the request is queued for execution after this method
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* completes. The notify handlers are NOT invoked synchronously
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* from this thread -- because handlers may in turn run other
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* control methods.
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*/
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status = acpi_ev_queue_notify_request (node, value);
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break;
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default:
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ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_0T_0R: Unknown opcode %X\n",
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walk_state->opcode));
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status = AE_AML_BAD_OPCODE;
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}
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return_ACPI_STATUS (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_opcode_2A_2T_1R
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*
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* PARAMETERS: walk_state - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets
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* and one implicit return value.
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*
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******************************************************************************/
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acpi_status
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acpi_ex_opcode_2A_2T_1R (
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struct acpi_walk_state *walk_state)
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{
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union acpi_operand_object **operand = &walk_state->operands[0];
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union acpi_operand_object *return_desc1 = NULL;
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union acpi_operand_object *return_desc2 = NULL;
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acpi_status status;
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ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_2T_1R",
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acpi_ps_get_opcode_name (walk_state->opcode));
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/*
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* Execute the opcode
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*/
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switch (walk_state->opcode) {
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case AML_DIVIDE_OP: /* Divide (Dividend, Divisor, remainder_result quotient_result) */
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return_desc1 = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
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if (!return_desc1) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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return_desc2 = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
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if (!return_desc2) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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/* Quotient to return_desc1, remainder to return_desc2 */
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status = acpi_ut_divide (operand[0]->integer.value,
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operand[1]->integer.value,
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&return_desc1->integer.value,
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&return_desc2->integer.value);
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if (ACPI_FAILURE (status)) {
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goto cleanup;
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}
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break;
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default:
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ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_2T_1R: Unknown opcode %X\n",
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walk_state->opcode));
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status = AE_AML_BAD_OPCODE;
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goto cleanup;
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}
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/* Store the results to the target reference operands */
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status = acpi_ex_store (return_desc2, operand[2], walk_state);
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if (ACPI_FAILURE (status)) {
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goto cleanup;
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}
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status = acpi_ex_store (return_desc1, operand[3], walk_state);
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if (ACPI_FAILURE (status)) {
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goto cleanup;
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}
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/* Return the remainder */
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walk_state->result_obj = return_desc1;
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cleanup:
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/*
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* Since the remainder is not returned indirectly, remove a reference to
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* it. Only the quotient is returned indirectly.
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*/
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acpi_ut_remove_reference (return_desc2);
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if (ACPI_FAILURE (status)) {
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/* Delete the return object */
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acpi_ut_remove_reference (return_desc1);
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}
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return_ACPI_STATUS (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_opcode_2A_1T_1R
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*
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* PARAMETERS: walk_state - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute opcode with two arguments, one target, and a return
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* value.
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*
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******************************************************************************/
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acpi_status
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acpi_ex_opcode_2A_1T_1R (
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struct acpi_walk_state *walk_state)
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{
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union acpi_operand_object **operand = &walk_state->operands[0];
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union acpi_operand_object *return_desc = NULL;
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u32 index;
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acpi_status status = AE_OK;
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acpi_size length;
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ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_1T_1R",
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acpi_ps_get_opcode_name (walk_state->opcode));
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/*
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* Execute the opcode
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*/
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if (walk_state->op_info->flags & AML_MATH) {
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/* All simple math opcodes (add, etc.) */
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return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
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if (!return_desc) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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return_desc->integer.value = acpi_ex_do_math_op (walk_state->opcode,
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operand[0]->integer.value,
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operand[1]->integer.value);
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goto store_result_to_target;
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}
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switch (walk_state->opcode) {
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case AML_MOD_OP: /* Mod (Dividend, Divisor, remainder_result (ACPI 2.0) */
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return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
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if (!return_desc) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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/* return_desc will contain the remainder */
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status = acpi_ut_divide (operand[0]->integer.value,
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operand[1]->integer.value,
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NULL,
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&return_desc->integer.value);
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break;
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case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */
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status = acpi_ex_do_concatenate (operand[0], operand[1],
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&return_desc, walk_state);
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break;
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case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */
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/*
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* Input object is guaranteed to be a buffer at this point (it may have
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* been converted.) Copy the raw buffer data to a new object of type String.
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*/
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/*
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* Get the length of the new string. It is the smallest of:
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* 1) Length of the input buffer
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* 2) Max length as specified in the to_string operator
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* 3) Length of input buffer up to a zero byte (null terminator)
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*
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* NOTE: A length of zero is ok, and will create a zero-length, null
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* terminated string.
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*/
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length = 0;
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while ((length < operand[0]->buffer.length) &&
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(length < operand[1]->integer.value) &&
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(operand[0]->buffer.pointer[length])) {
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length++;
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if (length > ACPI_MAX_STRING_CONVERSION) {
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status = AE_AML_STRING_LIMIT;
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goto cleanup;
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}
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}
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/* Allocate a new string object */
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return_desc = acpi_ut_create_string_object (length);
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if (!return_desc) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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/* Copy the raw buffer data with no transform. NULL terminated already. */
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ACPI_MEMCPY (return_desc->string.pointer,
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operand[0]->buffer.pointer, length);
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break;
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case AML_CONCAT_RES_OP: /* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */
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status = acpi_ex_concat_template (operand[0], operand[1],
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&return_desc, walk_state);
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break;
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case AML_INDEX_OP: /* Index (Source Index Result) */
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/* Create the internal return object */
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return_desc = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_REFERENCE);
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if (!return_desc) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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index = (u32) operand[1]->integer.value;
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/*
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* At this point, the Source operand is a Package, Buffer, or String
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*/
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if (ACPI_GET_OBJECT_TYPE (operand[0]) == ACPI_TYPE_PACKAGE) {
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/* Object to be indexed is a Package */
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if (index >= operand[0]->package.count) {
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Index value (%X) beyond package end (%X)\n",
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index, operand[0]->package.count));
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status = AE_AML_PACKAGE_LIMIT;
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goto cleanup;
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}
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return_desc->reference.target_type = ACPI_TYPE_PACKAGE;
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return_desc->reference.object = operand[0];
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return_desc->reference.where = &operand[0]->package.elements [index];
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}
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else {
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/* Object to be indexed is a Buffer/String */
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if (index >= operand[0]->buffer.length) {
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Index value (%X) beyond end of buffer (%X)\n",
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index, operand[0]->buffer.length));
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status = AE_AML_BUFFER_LIMIT;
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goto cleanup;
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}
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return_desc->reference.target_type = ACPI_TYPE_BUFFER_FIELD;
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return_desc->reference.object = operand[0];
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}
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/*
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* Add a reference to the target package/buffer/string for the life
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* of the index.
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*/
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acpi_ut_add_reference (operand[0]);
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/* Complete the Index reference object */
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return_desc->reference.opcode = AML_INDEX_OP;
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return_desc->reference.offset = index;
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/* Store the reference to the Target */
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status = acpi_ex_store (return_desc, operand[2], walk_state);
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/* Return the reference */
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walk_state->result_obj = return_desc;
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goto cleanup;
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default:
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ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_1T_1R: Unknown opcode %X\n",
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walk_state->opcode));
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status = AE_AML_BAD_OPCODE;
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break;
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}
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store_result_to_target:
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if (ACPI_SUCCESS (status)) {
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/*
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* Store the result of the operation (which is now in return_desc) into
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* the Target descriptor.
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*/
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status = acpi_ex_store (return_desc, operand[2], walk_state);
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if (ACPI_FAILURE (status)) {
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goto cleanup;
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}
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if (!walk_state->result_obj) {
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walk_state->result_obj = return_desc;
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}
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}
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|
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cleanup:
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/* Delete return object on error */
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if (ACPI_FAILURE (status)) {
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acpi_ut_remove_reference (return_desc);
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}
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return_ACPI_STATUS (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_opcode_2A_0T_1R
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*
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* PARAMETERS: walk_state - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value
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*
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******************************************************************************/
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acpi_status
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acpi_ex_opcode_2A_0T_1R (
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struct acpi_walk_state *walk_state)
|
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{
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union acpi_operand_object **operand = &walk_state->operands[0];
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union acpi_operand_object *return_desc = NULL;
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acpi_status status = AE_OK;
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u8 logical_result = FALSE;
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ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_0T_1R",
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acpi_ps_get_opcode_name (walk_state->opcode));
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/* Create the internal return object */
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return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
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if (!return_desc) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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/*
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* Execute the Opcode
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*/
|
|
if (walk_state->op_info->flags & AML_LOGICAL_NUMERIC) /* logical_op (Operand0, Operand1) */ {
|
|
status = acpi_ex_do_logical_numeric_op (walk_state->opcode,
|
|
operand[0]->integer.value, operand[1]->integer.value,
|
|
&logical_result);
|
|
goto store_logical_result;
|
|
}
|
|
else if (walk_state->op_info->flags & AML_LOGICAL) /* logical_op (Operand0, Operand1) */ {
|
|
status = acpi_ex_do_logical_op (walk_state->opcode, operand[0],
|
|
operand[1], &logical_result);
|
|
goto store_logical_result;
|
|
}
|
|
|
|
|
|
switch (walk_state->opcode) {
|
|
case AML_ACQUIRE_OP: /* Acquire (mutex_object, Timeout) */
|
|
|
|
status = acpi_ex_acquire_mutex (operand[1], operand[0], walk_state);
|
|
if (status == AE_TIME) {
|
|
logical_result = TRUE; /* TRUE = Acquire timed out */
|
|
status = AE_OK;
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_WAIT_OP: /* Wait (event_object, Timeout) */
|
|
|
|
status = acpi_ex_system_wait_event (operand[1], operand[0]);
|
|
if (status == AE_TIME) {
|
|
logical_result = TRUE; /* TRUE, Wait timed out */
|
|
status = AE_OK;
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_0T_1R: Unknown opcode %X\n",
|
|
walk_state->opcode));
|
|
status = AE_AML_BAD_OPCODE;
|
|
goto cleanup;
|
|
}
|
|
|
|
|
|
store_logical_result:
|
|
/*
|
|
* Set return value to according to logical_result. logical TRUE (all ones)
|
|
* Default is FALSE (zero)
|
|
*/
|
|
if (logical_result) {
|
|
return_desc->integer.value = ACPI_INTEGER_MAX;
|
|
}
|
|
|
|
walk_state->result_obj = return_desc;
|
|
|
|
|
|
cleanup:
|
|
|
|
/* Delete return object on error */
|
|
|
|
if (ACPI_FAILURE (status)) {
|
|
acpi_ut_remove_reference (return_desc);
|
|
}
|
|
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
|