patch-2.4.6 linux/drivers/acpi/interpreter/amnames.c
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- Lines: 396
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.5/linux/drivers/acpi/interpreter/amnames.c
- Orig date:
Mon Jan 22 13:23:42 2001
diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/interpreter/amnames.c linux/drivers/acpi/interpreter/amnames.c
@@ -1,395 +0,0 @@
-
-/******************************************************************************
- *
- * Module Name: amnames - interpreter/scanner name load/execute
- * $Revision: 73 $
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000, 2001 R. Byron Moore
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include "acpi.h"
-#include "acinterp.h"
-#include "amlcode.h"
-#include "acnamesp.h"
-
-#define _COMPONENT INTERPRETER
- MODULE_NAME ("amnames")
-
-
-/* AML Package Length encodings */
-
-#define ACPI_AML_PACKAGE_TYPE1 0x40
-#define ACPI_AML_PACKAGE_TYPE2 0x4000
-#define ACPI_AML_PACKAGE_TYPE3 0x400000
-#define ACPI_AML_PACKAGE_TYPE4 0x40000000
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_allocate_name_string
- *
- * PARAMETERS: Prefix_count - Count of parent levels. Special cases:
- * (-1) = root, 0 = none
- * Num_name_segs - count of 4-character name segments
- *
- * RETURN: A pointer to the allocated string segment. This segment must
- * be deleted by the caller.
- *
- * DESCRIPTION: Allocate a buffer for a name string. Ensure allocated name
- * string is long enough, and set up prefix if any.
- *
- ******************************************************************************/
-
-NATIVE_CHAR *
-acpi_aml_allocate_name_string (
- u32 prefix_count,
- u32 num_name_segs)
-{
- NATIVE_CHAR *temp_ptr;
- NATIVE_CHAR *name_string;
- u32 size_needed;
-
-
- /*
- * Allow room for all \ and ^ prefixes, all segments, and a Multi_name_prefix.
- * Also, one byte for the null terminator.
- * This may actually be somewhat longer than needed.
- */
-
- if (prefix_count == (u32) -1) {
- /* Special case for root */
-
- size_needed = 1 + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1;
- }
- else {
- size_needed = prefix_count + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1;
- }
-
- /*
- * Allocate a buffer for the name.
- * This buffer must be deleted by the caller!
- */
-
- name_string = acpi_cm_allocate (size_needed);
- if (!name_string) {
- REPORT_ERROR (("Aml_allocate_name_string: name allocation failure\n"));
- return (NULL);
- }
-
- temp_ptr = name_string;
-
- /* Set up Root or Parent prefixes if needed */
-
- if (prefix_count == (u32) -1) {
- *temp_ptr++ = AML_ROOT_PREFIX;
- }
-
- else {
- while (prefix_count--) {
- *temp_ptr++ = AML_PARENT_PREFIX;
- }
- }
-
-
- /* Set up Dual or Multi prefixes if needed */
-
- if (num_name_segs > 2) {
- /* Set up multi prefixes */
-
- *temp_ptr++ = AML_MULTI_NAME_PREFIX_OP;
- *temp_ptr++ = (char) num_name_segs;
- }
-
- else if (2 == num_name_segs) {
- /* Set up dual prefixes */
-
- *temp_ptr++ = AML_DUAL_NAME_PREFIX;
- }
-
- /*
- * Terminate string following prefixes. Acpi_aml_exec_name_segment() will
- * append the segment(s)
- */
-
- *temp_ptr = 0;
-
- return (name_string);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_exec_name_segment
- *
- * PARAMETERS: Interpreter_mode - Current running mode (load1/Load2/Exec)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute a name segment (4 bytes)
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_exec_name_segment (
- u8 **in_aml_address,
- NATIVE_CHAR *name_string)
-{
- u8 *aml_address = *in_aml_address;
- ACPI_STATUS status = AE_OK;
- u32 index;
- NATIVE_CHAR char_buf[5];
-
-
- /*
- * If first character is a digit, then we know that we aren't looking at a
- * valid name segment
- */
-
- char_buf[0] = *aml_address;
-
- if ('0' <= char_buf[0] && char_buf[0] <= '9') {
- return (AE_CTRL_PENDING);
- }
-
- for (index = 4;
- (index > 0) && (acpi_cm_valid_acpi_character (*aml_address));
- --index)
- {
- char_buf[4 - index] = *aml_address++;
- }
-
-
- /* Valid name segment */
-
- if (0 == index) {
- /* Found 4 valid characters */
-
- char_buf[4] = '\0';
-
- if (name_string) {
- STRCAT (name_string, char_buf);
- }
-
- }
-
- else if (4 == index) {
- /*
- * First character was not a valid name character,
- * so we are looking at something other than a name.
- */
- status = AE_CTRL_PENDING;
- }
-
- else {
- /* Segment started with one or more valid characters, but fewer than 4 */
-
- status = AE_AML_BAD_NAME;
- }
-
- *in_aml_address = aml_address;
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_get_name_string
- *
- * PARAMETERS: Data_type - Data type to be associated with this name
- *
- * RETURN: Status
- *
- * DESCRIPTION: Get a name, including any prefixes.
- *
- ******************************************************************************/
-
-
-ACPI_STATUS
-acpi_aml_get_name_string (
- OBJECT_TYPE_INTERNAL data_type,
- u8 *in_aml_address,
- NATIVE_CHAR **out_name_string,
- u32 *out_name_length)
-{
- ACPI_STATUS status = AE_OK;
- u8 *aml_address = in_aml_address;
- NATIVE_CHAR *name_string = NULL;
- u32 num_segments;
- u32 prefix_count = 0;
- u8 prefix = 0;
- u8 has_prefix = FALSE;
-
-
- if (INTERNAL_TYPE_DEF_FIELD == data_type ||
- INTERNAL_TYPE_BANK_FIELD == data_type ||
- INTERNAL_TYPE_INDEX_FIELD == data_type)
- {
- /* Disallow prefixes for types associated with field names */
-
- name_string = acpi_aml_allocate_name_string (0, 1);
- if (!name_string) {
- status = AE_NO_MEMORY;
- }
- else {
- status = acpi_aml_exec_name_segment (&aml_address, name_string);
- }
- }
-
- else {
- /*
- * Data_type is not a field name.
- * Examine first character of name for root or parent prefix operators
- */
-
- switch (*aml_address)
- {
-
- case AML_ROOT_PREFIX:
-
- prefix = *aml_address++;
- /*
- * Remember that we have a Root_prefix --
- * see comment in Acpi_aml_allocate_name_string()
- */
- prefix_count = (u32) -1;
- has_prefix = TRUE;
- break;
-
-
- case AML_PARENT_PREFIX:
-
- /* Increment past possibly multiple parent prefixes */
-
- do
- {
- prefix = *aml_address++;
- ++prefix_count;
-
- } while (*aml_address == AML_PARENT_PREFIX);
- has_prefix = TRUE;
- break;
-
-
- default:
-
- break;
- }
-
-
- /* Examine first character of name for name segment prefix operator */
-
- switch (*aml_address)
- {
-
- case AML_DUAL_NAME_PREFIX:
-
- prefix = *aml_address++;
- name_string = acpi_aml_allocate_name_string (prefix_count, 2);
- if (!name_string) {
- status = AE_NO_MEMORY;
- break;
- }
-
- /* Indicate that we processed a prefix */
- has_prefix = TRUE;
-
- status = acpi_aml_exec_name_segment (&aml_address, name_string);
- if (ACPI_SUCCESS (status)) {
- status = acpi_aml_exec_name_segment (&aml_address, name_string);
- }
- break;
-
-
- case AML_MULTI_NAME_PREFIX_OP:
-
- prefix = *aml_address++;
- /* Fetch count of segments remaining in name path */
-
- num_segments = *aml_address++;
-
- name_string = acpi_aml_allocate_name_string (prefix_count, num_segments);
- if (!name_string) {
- status = AE_NO_MEMORY;
- break;
- }
-
- /* Indicate that we processed a prefix */
- has_prefix = TRUE;
-
- while (num_segments &&
- (status = acpi_aml_exec_name_segment (&aml_address, name_string)) == AE_OK)
- {
- --num_segments;
- }
-
- break;
-
-
- case 0:
-
- /* Null_name valid as of 8-12-98 ASL/AML Grammar Update */
-
-
- /* Consume the NULL byte */
-
- aml_address++;
- name_string = acpi_aml_allocate_name_string (prefix_count, 0);
- if (!name_string) {
- status = AE_NO_MEMORY;
- break;
- }
-
- break;
-
-
- default:
-
- /* Name segment string */
-
- name_string = acpi_aml_allocate_name_string (prefix_count, 1);
- if (!name_string) {
- status = AE_NO_MEMORY;
- break;
- }
-
- status = acpi_aml_exec_name_segment (&aml_address, name_string);
- break;
-
- } /* Switch (Peek_op ()) */
- }
-
-
- if (AE_CTRL_PENDING == status && has_prefix) {
- /* Ran out of segments after processing a prefix */
-
- REPORT_ERROR (
- ("Aml_do_name: Malformed Name at %p\n", name_string));
- status = AE_AML_BAD_NAME;
- }
-
-
- *out_name_string = name_string;
- *out_name_length = (u32) (aml_address - in_aml_address);
-
- return (status);
-}
-
-
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