linux_dsm_epyc7002/drivers/acpi/parser/psutils.c
Robert Moore 44f6c01242 ACPICA 20050408 from Bob Moore
Fixed three cases in the interpreter where an "index"
argument to an ASL function was still (internally) 32
bits instead of the required 64 bits.  This was the Index
argument to the Index, Mid, and Match operators.

The "strupr" function is now permanently local
(acpi_ut_strupr), since this is not a POSIX-defined
function and not present in most kernel-level C
libraries. References to the C library strupr function
have been removed from the headers.

Completed the deployment of static
functions/prototypes. All prototypes with the static
attribute have been moved from the headers to the owning
C file.

ACPICA 20050329 from Bob Moore

An error is now generated if an attempt is made to create
a Buffer Field of length zero (A CreateField with a length
operand of zero.)

The interpreter now issues a warning whenever executable
code at the module level is detected during ACPI table
load. This will give some idea of the prevalence of this
type of code.

Implemented support for references to named objects (other
than control methods) within package objects.

Enhanced package object output for the debug
object. Package objects are now completely dumped, showing
all elements.

Enhanced miscellaneous object output for the debug
object. Any object can now be written to the debug object
(for example, a device object can be written, and the type
of the object will be displayed.)

The "static" qualifier has been added to all local
functions across the core subsystem.

The number of "long" lines (> 80 chars) within the source
has been significantly reduced, by about 1/3.

Cleaned up all header files to ensure that all CA/iASL
functions are prototyped (even static functions) and the
formatting is consistent.

Two new header files have been added, acopcode.h and
acnames.h.

Removed several obsolete functions that were no longer
used.

Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-12 00:08:52 -04:00

307 lines
7.7 KiB
C

/******************************************************************************
*
* Module Name: psutils - Parser miscellaneous utilities (Parser only)
*
*****************************************************************************/
/*
* 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/acparser.h>
#include <acpi/amlcode.h>
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME ("psutils")
/*******************************************************************************
*
* FUNCTION: acpi_ps_create_scope_op
*
* PARAMETERS: None
*
* RETURN: A new Scope object, null on failure
*
* DESCRIPTION: Create a Scope and associated namepath op with the root name
*
******************************************************************************/
union acpi_parse_object *
acpi_ps_create_scope_op (
void)
{
union acpi_parse_object *scope_op;
scope_op = acpi_ps_alloc_op (AML_SCOPE_OP);
if (!scope_op) {
return (NULL);
}
scope_op->named.name = ACPI_ROOT_NAME;
return (scope_op);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_init_op
*
* PARAMETERS: Op - A newly allocated Op object
* Opcode - Opcode to store in the Op
*
* RETURN: None
*
* DESCRIPTION: Initialize a parse (Op) object
*
******************************************************************************/
void
acpi_ps_init_op (
union acpi_parse_object *op,
u16 opcode)
{
ACPI_FUNCTION_ENTRY ();
op->common.data_type = ACPI_DESC_TYPE_PARSER;
op->common.aml_opcode = opcode;
ACPI_DISASM_ONLY_MEMBERS (ACPI_STRNCPY (op->common.aml_op_name,
(acpi_ps_get_opcode_info (opcode))->name,
sizeof (op->common.aml_op_name)));
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_alloc_op
*
* PARAMETERS: Opcode - Opcode that will be stored in the new Op
*
* RETURN: Pointer to the new Op, null on failure
*
* DESCRIPTION: Allocate an acpi_op, choose op type (and thus size) based on
* opcode. A cache of opcodes is available for the pure
* GENERIC_OP, since this is by far the most commonly used.
*
******************************************************************************/
union acpi_parse_object*
acpi_ps_alloc_op (
u16 opcode)
{
union acpi_parse_object *op;
const struct acpi_opcode_info *op_info;
u8 flags = ACPI_PARSEOP_GENERIC;
ACPI_FUNCTION_ENTRY ();
op_info = acpi_ps_get_opcode_info (opcode);
/* Determine type of parse_op required */
if (op_info->flags & AML_DEFER) {
flags = ACPI_PARSEOP_DEFERRED;
}
else if (op_info->flags & AML_NAMED) {
flags = ACPI_PARSEOP_NAMED;
}
else if (opcode == AML_INT_BYTELIST_OP) {
flags = ACPI_PARSEOP_BYTELIST;
}
/* Allocate the minimum required size object */
if (flags == ACPI_PARSEOP_GENERIC) {
/* The generic op (default) is by far the most common (16 to 1) */
op = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_PSNODE);
}
else {
/* Extended parseop */
op = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_PSNODE_EXT);
}
/* Initialize the Op */
if (op) {
acpi_ps_init_op (op, opcode);
op->common.flags = flags;
}
return (op);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_free_op
*
* PARAMETERS: Op - Op to be freed
*
* RETURN: None.
*
* DESCRIPTION: Free an Op object. Either put it on the GENERIC_OP cache list
* or actually free it.
*
******************************************************************************/
void
acpi_ps_free_op (
union acpi_parse_object *op)
{
ACPI_FUNCTION_NAME ("ps_free_op");
if (op->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Free retval op: %p\n", op));
}
if (op->common.flags & ACPI_PARSEOP_GENERIC) {
acpi_ut_release_to_cache (ACPI_MEM_LIST_PSNODE, op);
}
else {
acpi_ut_release_to_cache (ACPI_MEM_LIST_PSNODE_EXT, op);
}
}
#ifdef ACPI_ENABLE_OBJECT_CACHE
/*******************************************************************************
*
* FUNCTION: acpi_ps_delete_parse_cache
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Free all objects that are on the parse cache list.
*
******************************************************************************/
void
acpi_ps_delete_parse_cache (
void)
{
ACPI_FUNCTION_TRACE ("ps_delete_parse_cache");
acpi_ut_delete_generic_cache (ACPI_MEM_LIST_PSNODE);
acpi_ut_delete_generic_cache (ACPI_MEM_LIST_PSNODE_EXT);
return_VOID;
}
#endif
/*******************************************************************************
*
* FUNCTION: Utility functions
*
* DESCRIPTION: Low level character and object functions
*
******************************************************************************/
/*
* Is "c" a namestring lead character?
*/
u8
acpi_ps_is_leading_char (
u32 c)
{
return ((u8) (c == '_' || (c >= 'A' && c <= 'Z')));
}
/*
* Is "c" a namestring prefix character?
*/
u8
acpi_ps_is_prefix_char (
u32 c)
{
return ((u8) (c == '\\' || c == '^'));
}
/*
* Get op's name (4-byte name segment) or 0 if unnamed
*/
#ifdef ACPI_FUTURE_USAGE
u32
acpi_ps_get_name (
union acpi_parse_object *op)
{
/* The "generic" object has no name associated with it */
if (op->common.flags & ACPI_PARSEOP_GENERIC) {
return (0);
}
/* Only the "Extended" parse objects have a name */
return (op->named.name);
}
#endif /* ACPI_FUTURE_USAGE */
/*
* Set op's name
*/
void
acpi_ps_set_name (
union acpi_parse_object *op,
u32 name)
{
/* The "generic" object has no name associated with it */
if (op->common.flags & ACPI_PARSEOP_GENERIC) {
return;
}
op->named.name = name;
}