257 строки
7.5 KiB
C
257 строки
7.5 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exoparg3 - AML execution - opcodes with 3 arguments
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2005, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/acinterp.h>
|
|
#include <acpi/acparser.h>
|
|
#include <acpi/amlcode.h>
|
|
|
|
|
|
#define _COMPONENT ACPI_EXECUTER
|
|
ACPI_MODULE_NAME ("exoparg3")
|
|
|
|
|
|
/*!
|
|
* Naming convention for AML interpreter execution routines.
|
|
*
|
|
* The routines that begin execution of AML opcodes are named with a common
|
|
* convention based upon the number of arguments, the number of target operands,
|
|
* and whether or not a value is returned:
|
|
*
|
|
* AcpiExOpcode_xA_yT_zR
|
|
*
|
|
* Where:
|
|
*
|
|
* xA - ARGUMENTS: The number of arguments (input operands) that are
|
|
* required for this opcode type (1 through 6 args).
|
|
* yT - TARGETS: The number of targets (output operands) that are required
|
|
* for this opcode type (0, 1, or 2 targets).
|
|
* zR - RETURN VALUE: Indicates whether this opcode type returns a value
|
|
* as the function return (0 or 1).
|
|
*
|
|
* The AcpiExOpcode* functions are called via the Dispatcher component with
|
|
* fully resolved operands.
|
|
!*/
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_opcode_3A_0T_0R
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Execute Triadic operator (3 operands)
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ex_opcode_3A_0T_0R (
|
|
struct acpi_walk_state *walk_state)
|
|
{
|
|
union acpi_operand_object **operand = &walk_state->operands[0];
|
|
struct acpi_signal_fatal_info *fatal;
|
|
acpi_status status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_0T_0R", acpi_ps_get_opcode_name (walk_state->opcode));
|
|
|
|
|
|
switch (walk_state->opcode) {
|
|
case AML_FATAL_OP: /* Fatal (fatal_type fatal_code fatal_arg) */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"fatal_op: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
|
|
(u32) operand[0]->integer.value,
|
|
(u32) operand[1]->integer.value,
|
|
(u32) operand[2]->integer.value));
|
|
|
|
fatal = ACPI_MEM_ALLOCATE (sizeof (struct acpi_signal_fatal_info));
|
|
if (fatal) {
|
|
fatal->type = (u32) operand[0]->integer.value;
|
|
fatal->code = (u32) operand[1]->integer.value;
|
|
fatal->argument = (u32) operand[2]->integer.value;
|
|
}
|
|
|
|
/*
|
|
* Always signal the OS!
|
|
*/
|
|
status = acpi_os_signal (ACPI_SIGNAL_FATAL, fatal);
|
|
|
|
/* Might return while OS is shutting down, just continue */
|
|
|
|
ACPI_MEM_FREE (fatal);
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
|
|
walk_state->opcode));
|
|
status = AE_AML_BAD_OPCODE;
|
|
goto cleanup;
|
|
}
|
|
|
|
|
|
cleanup:
|
|
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_opcode_3A_1T_1R
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Execute Triadic operator (3 operands)
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ex_opcode_3A_1T_1R (
|
|
struct acpi_walk_state *walk_state)
|
|
{
|
|
union acpi_operand_object **operand = &walk_state->operands[0];
|
|
union acpi_operand_object *return_desc = NULL;
|
|
char *buffer;
|
|
acpi_status status = AE_OK;
|
|
acpi_native_uint index;
|
|
acpi_size length;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_1T_1R", acpi_ps_get_opcode_name (walk_state->opcode));
|
|
|
|
|
|
switch (walk_state->opcode) {
|
|
case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
|
|
|
|
/*
|
|
* Create the return object. The Source operand is guaranteed to be
|
|
* either a String or a Buffer, so just use its type.
|
|
*/
|
|
return_desc = acpi_ut_create_internal_object (ACPI_GET_OBJECT_TYPE (operand[0]));
|
|
if (!return_desc) {
|
|
status = AE_NO_MEMORY;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Get the Integer values from the objects */
|
|
|
|
index = (acpi_native_uint) operand[1]->integer.value;
|
|
length = (acpi_size) operand[2]->integer.value;
|
|
|
|
/*
|
|
* If the index is beyond the length of the String/Buffer, or if the
|
|
* requested length is zero, return a zero-length String/Buffer
|
|
*/
|
|
if ((index < operand[0]->string.length) &&
|
|
(length > 0)) {
|
|
/* Truncate request if larger than the actual String/Buffer */
|
|
|
|
if ((index + length) >
|
|
operand[0]->string.length) {
|
|
length = (acpi_size) operand[0]->string.length - index;
|
|
}
|
|
|
|
/* Allocate a new buffer for the String/Buffer */
|
|
|
|
buffer = ACPI_MEM_CALLOCATE ((acpi_size) length + 1);
|
|
if (!buffer) {
|
|
status = AE_NO_MEMORY;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Copy the portion requested */
|
|
|
|
ACPI_MEMCPY (buffer, operand[0]->string.pointer + index,
|
|
length);
|
|
|
|
/* Set the length of the new String/Buffer */
|
|
|
|
return_desc->string.pointer = buffer;
|
|
return_desc->string.length = (u32) length;
|
|
}
|
|
|
|
/* Mark buffer initialized */
|
|
|
|
return_desc->buffer.flags |= AOPOBJ_DATA_VALID;
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
|
|
walk_state->opcode));
|
|
status = AE_AML_BAD_OPCODE;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Store the result in the target */
|
|
|
|
status = acpi_ex_store (return_desc, operand[3], walk_state);
|
|
|
|
cleanup:
|
|
|
|
/* Delete return object on error */
|
|
|
|
if (ACPI_FAILURE (status)) {
|
|
acpi_ut_remove_reference (return_desc);
|
|
}
|
|
|
|
/* Set the return object and exit */
|
|
|
|
if (!walk_state->result_obj) {
|
|
walk_state->result_obj = return_desc;
|
|
}
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
|