6c9deb7201
Added 2007 copyright to all module headers and signons. This affects virtually every file in the ACPICA core subsystem, iASL compiler, and the utilities. Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
264 lines
8.1 KiB
C
264 lines
8.1 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: psscope - Parser scope stack management routines
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2007, 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/acparser.h>
|
|
|
|
#define _COMPONENT ACPI_PARSER
|
|
ACPI_MODULE_NAME("psscope")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_get_parent_scope
|
|
*
|
|
* PARAMETERS: parser_state - Current parser state object
|
|
*
|
|
* RETURN: Pointer to an Op object
|
|
*
|
|
* DESCRIPTION: Get parent of current op being parsed
|
|
*
|
|
******************************************************************************/
|
|
union acpi_parse_object *acpi_ps_get_parent_scope(struct acpi_parse_state
|
|
*parser_state)
|
|
{
|
|
|
|
return (parser_state->scope->parse_scope.op);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_has_completed_scope
|
|
*
|
|
* PARAMETERS: parser_state - Current parser state object
|
|
*
|
|
* RETURN: Boolean, TRUE = scope completed.
|
|
*
|
|
* DESCRIPTION: Is parsing of current argument complete? Determined by
|
|
* 1) AML pointer is at or beyond the end of the scope
|
|
* 2) The scope argument count has reached zero.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_ps_has_completed_scope(struct acpi_parse_state * parser_state)
|
|
{
|
|
|
|
return ((u8)
|
|
((parser_state->aml >= parser_state->scope->parse_scope.arg_end
|
|
|| !parser_state->scope->parse_scope.arg_count)));
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_init_scope
|
|
*
|
|
* PARAMETERS: parser_state - Current parser state object
|
|
* Root - the Root Node of this new scope
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Allocate and init a new scope object
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ps_init_scope(struct acpi_parse_state * parser_state,
|
|
union acpi_parse_object * root_op)
|
|
{
|
|
union acpi_generic_state *scope;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ps_init_scope, root_op);
|
|
|
|
scope = acpi_ut_create_generic_state();
|
|
if (!scope) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
scope->common.descriptor_type = ACPI_DESC_TYPE_STATE_RPSCOPE;
|
|
scope->parse_scope.op = root_op;
|
|
scope->parse_scope.arg_count = ACPI_VAR_ARGS;
|
|
scope->parse_scope.arg_end = parser_state->aml_end;
|
|
scope->parse_scope.pkg_end = parser_state->aml_end;
|
|
|
|
parser_state->scope = scope;
|
|
parser_state->start_op = root_op;
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_push_scope
|
|
*
|
|
* PARAMETERS: parser_state - Current parser state object
|
|
* Op - Current op to be pushed
|
|
* remaining_args - List of args remaining
|
|
* arg_count - Fixed or variable number of args
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Push current op to begin parsing its argument
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ps_push_scope(struct acpi_parse_state *parser_state,
|
|
union acpi_parse_object *op,
|
|
u32 remaining_args, u32 arg_count)
|
|
{
|
|
union acpi_generic_state *scope;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ps_push_scope, op);
|
|
|
|
scope = acpi_ut_create_generic_state();
|
|
if (!scope) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
scope->common.descriptor_type = ACPI_DESC_TYPE_STATE_PSCOPE;
|
|
scope->parse_scope.op = op;
|
|
scope->parse_scope.arg_list = remaining_args;
|
|
scope->parse_scope.arg_count = arg_count;
|
|
scope->parse_scope.pkg_end = parser_state->pkg_end;
|
|
|
|
/* Push onto scope stack */
|
|
|
|
acpi_ut_push_generic_state(&parser_state->scope, scope);
|
|
|
|
if (arg_count == ACPI_VAR_ARGS) {
|
|
|
|
/* Multiple arguments */
|
|
|
|
scope->parse_scope.arg_end = parser_state->pkg_end;
|
|
} else {
|
|
/* Single argument */
|
|
|
|
scope->parse_scope.arg_end = ACPI_TO_POINTER(ACPI_MAX_PTR);
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_pop_scope
|
|
*
|
|
* PARAMETERS: parser_state - Current parser state object
|
|
* Op - Where the popped op is returned
|
|
* arg_list - Where the popped "next argument" is
|
|
* returned
|
|
* arg_count - Count of objects in arg_list
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Return to parsing a previous op
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
acpi_ps_pop_scope(struct acpi_parse_state *parser_state,
|
|
union acpi_parse_object **op, u32 * arg_list, u32 * arg_count)
|
|
{
|
|
union acpi_generic_state *scope = parser_state->scope;
|
|
|
|
ACPI_FUNCTION_TRACE(ps_pop_scope);
|
|
|
|
/* Only pop the scope if there is in fact a next scope */
|
|
|
|
if (scope->common.next) {
|
|
scope = acpi_ut_pop_generic_state(&parser_state->scope);
|
|
|
|
/* Return to parsing previous op */
|
|
|
|
*op = scope->parse_scope.op;
|
|
*arg_list = scope->parse_scope.arg_list;
|
|
*arg_count = scope->parse_scope.arg_count;
|
|
parser_state->pkg_end = scope->parse_scope.pkg_end;
|
|
|
|
/* All done with this scope state structure */
|
|
|
|
acpi_ut_delete_generic_state(scope);
|
|
} else {
|
|
/* Empty parse stack, prepare to fetch next opcode */
|
|
|
|
*op = NULL;
|
|
*arg_list = 0;
|
|
*arg_count = 0;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
|
"Popped Op %p Args %X\n", *op, *arg_count));
|
|
return_VOID;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_cleanup_scope
|
|
*
|
|
* PARAMETERS: parser_state - Current parser state object
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Destroy available list, remaining stack levels, and return
|
|
* root scope
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ps_cleanup_scope(struct acpi_parse_state *parser_state)
|
|
{
|
|
union acpi_generic_state *scope;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ps_cleanup_scope, parser_state);
|
|
|
|
if (!parser_state) {
|
|
return_VOID;
|
|
}
|
|
|
|
/* Delete anything on the scope stack */
|
|
|
|
while (parser_state->scope) {
|
|
scope = acpi_ut_pop_generic_state(&parser_state->scope);
|
|
acpi_ut_delete_generic_state(scope);
|
|
}
|
|
|
|
return_VOID;
|
|
}
|