patch-2.4.6 linux/drivers/acpi/interpreter/amnames.c

• 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);
-}
-
-