2013-01-11 05:08:51 -07:00
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/*******************************************************************************
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*
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* Module Name: utstring - Common functions for strings and characters
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*
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******************************************************************************/
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/*
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2013-01-24 22:38:56 -07:00
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* Copyright (C) 2000 - 2013, Intel Corp.
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2013-01-11 05:08:51 -07:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utstring")
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/*
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* Non-ANSI C library functions - strlwr, strupr, stricmp, and a 64-bit
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* version of strtoul.
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*/
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#ifdef ACPI_ASL_COMPILER
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_strlwr (strlwr)
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*
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* PARAMETERS: src_string - The source string to convert
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert string to lowercase
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*
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* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
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*
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******************************************************************************/
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void acpi_ut_strlwr(char *src_string)
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{
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char *string;
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ACPI_FUNCTION_ENTRY();
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if (!src_string) {
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return;
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}
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/* Walk entire string, lowercasing the letters */
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for (string = src_string; *string; string++) {
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*string = (char)ACPI_TOLOWER(*string);
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}
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return;
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_ut_stricmp (stricmp)
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*
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* PARAMETERS: string1 - first string to compare
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* string2 - second string to compare
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*
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* RETURN: int that signifies string relationship. Zero means strings
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* are equal.
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*
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* DESCRIPTION: Implementation of the non-ANSI stricmp function (compare
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* strings with no case sensitivity)
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*
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******************************************************************************/
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int acpi_ut_stricmp(char *string1, char *string2)
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{
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int c1;
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int c2;
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do {
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c1 = tolower((int)*string1);
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c2 = tolower((int)*string2);
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string1++;
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string2++;
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}
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while ((c1 == c2) && (c1));
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return (c1 - c2);
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}
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#endif
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_strupr (strupr)
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*
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* PARAMETERS: src_string - The source string to convert
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert string to uppercase
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*
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* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
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*
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******************************************************************************/
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void acpi_ut_strupr(char *src_string)
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{
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char *string;
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ACPI_FUNCTION_ENTRY();
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if (!src_string) {
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return;
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}
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/* Walk entire string, uppercasing the letters */
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for (string = src_string; *string; string++) {
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*string = (char)ACPI_TOUPPER(*string);
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}
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return;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_strtoul64
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*
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* PARAMETERS: string - Null terminated string
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* base - Radix of the string: 16 or ACPI_ANY_BASE;
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* ACPI_ANY_BASE means 'in behalf of to_integer'
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* ret_integer - Where the converted integer is returned
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*
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* RETURN: Status and Converted value
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*
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* DESCRIPTION: Convert a string into an unsigned value. Performs either a
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* 32-bit or 64-bit conversion, depending on the current mode
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* of the interpreter.
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* NOTE: Does not support Octal strings, not needed.
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*
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******************************************************************************/
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acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer)
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{
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u32 this_digit = 0;
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u64 return_value = 0;
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u64 quotient;
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u64 dividend;
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u32 to_integer_op = (base == ACPI_ANY_BASE);
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u32 mode32 = (acpi_gbl_integer_byte_width == 4);
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u8 valid_digits = 0;
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u8 sign_of0x = 0;
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u8 term = 0;
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ACPI_FUNCTION_TRACE_STR(ut_stroul64, string);
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switch (base) {
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case ACPI_ANY_BASE:
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case 16:
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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break;
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default:
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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/* Invalid Base */
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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if (!string) {
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goto error_exit;
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}
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/* Skip over any white space in the buffer */
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while ((*string) && (ACPI_IS_SPACE(*string) || *string == '\t')) {
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string++;
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}
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if (to_integer_op) {
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/*
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* Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
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* We need to determine if it is decimal or hexadecimal.
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*/
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if ((*string == '0') && (ACPI_TOLOWER(*(string + 1)) == 'x')) {
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sign_of0x = 1;
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base = 16;
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/* Skip over the leading '0x' */
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string += 2;
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} else {
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base = 10;
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}
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}
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/* Any string left? Check that '0x' is not followed by white space. */
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if (!(*string) || ACPI_IS_SPACE(*string) || *string == '\t') {
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if (to_integer_op) {
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goto error_exit;
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} else {
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goto all_done;
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}
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}
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/*
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* Perform a 32-bit or 64-bit conversion, depending upon the current
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* execution mode of the interpreter
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*/
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dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
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/* Main loop: convert the string to a 32- or 64-bit integer */
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while (*string) {
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if (ACPI_IS_DIGIT(*string)) {
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/* Convert ASCII 0-9 to Decimal value */
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this_digit = ((u8)*string) - '0';
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} else if (base == 10) {
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/* Digit is out of range; possible in to_integer case only */
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term = 1;
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} else {
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this_digit = (u8)ACPI_TOUPPER(*string);
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if (ACPI_IS_XDIGIT((char)this_digit)) {
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/* Convert ASCII Hex char to value */
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this_digit = this_digit - 'A' + 10;
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} else {
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term = 1;
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}
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}
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if (term) {
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if (to_integer_op) {
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goto error_exit;
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} else {
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break;
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}
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} else if ((valid_digits == 0) && (this_digit == 0)
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&& !sign_of0x) {
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/* Skip zeros */
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string++;
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continue;
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}
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valid_digits++;
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if (sign_of0x
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&& ((valid_digits > 16)
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|| ((valid_digits > 8) && mode32))) {
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/*
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* This is to_integer operation case.
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* No any restrictions for string-to-integer conversion,
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* see ACPI spec.
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*/
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goto error_exit;
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}
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/* Divide the digit into the correct position */
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(void)acpi_ut_short_divide((dividend - (u64)this_digit),
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base, "ient, NULL);
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if (return_value > quotient) {
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if (to_integer_op) {
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goto error_exit;
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} else {
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break;
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}
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}
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return_value *= base;
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return_value += this_digit;
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string++;
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}
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/* All done, normal exit */
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all_done:
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
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ACPI_FORMAT_UINT64(return_value)));
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*ret_integer = return_value;
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return_ACPI_STATUS(AE_OK);
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error_exit:
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/* Base was set/validated above */
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if (base == 10) {
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return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT);
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} else {
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return_ACPI_STATUS(AE_BAD_HEX_CONSTANT);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_print_string
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*
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* PARAMETERS: string - Null terminated ASCII string
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* max_length - Maximum output length
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*
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* RETURN: None
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*
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* DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
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* sequences.
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*
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******************************************************************************/
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void acpi_ut_print_string(char *string, u8 max_length)
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{
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u32 i;
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if (!string) {
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acpi_os_printf("<\"NULL STRING PTR\">");
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return;
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}
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acpi_os_printf("\"");
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for (i = 0; string[i] && (i < max_length); i++) {
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/* Escape sequences */
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switch (string[i]) {
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case 0x07:
|
2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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acpi_os_printf("\\a"); /* BELL */
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break;
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case 0x08:
|
2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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acpi_os_printf("\\b"); /* BACKSPACE */
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break;
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case 0x0C:
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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acpi_os_printf("\\f"); /* FORMFEED */
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break;
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case 0x0A:
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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acpi_os_printf("\\n"); /* LINEFEED */
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break;
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case 0x0D:
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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acpi_os_printf("\\r"); /* CARRIAGE RETURN */
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break;
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case 0x09:
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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acpi_os_printf("\\t"); /* HORIZONTAL TAB */
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break;
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case 0x0B:
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2013-06-07 18:58:14 -06:00
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2013-01-11 05:08:51 -07:00
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acpi_os_printf("\\v"); /* VERTICAL TAB */
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break;
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case '\'': /* Single Quote */
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case '\"': /* Double Quote */
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|
|
case '\\': /* Backslash */
|
2013-06-07 18:58:14 -06:00
|
|
|
|
2013-01-11 05:08:51 -07:00
|
|
|
acpi_os_printf("\\%c", (int)string[i]);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
|
|
|
/* Check for printable character or hex escape */
|
|
|
|
|
|
|
|
if (ACPI_IS_PRINT(string[i])) {
|
|
|
|
/* This is a normal character */
|
|
|
|
|
|
|
|
acpi_os_printf("%c", (int)string[i]);
|
|
|
|
} else {
|
|
|
|
/* All others will be Hex escapes */
|
|
|
|
|
|
|
|
acpi_os_printf("\\x%2.2X", (s32) string[i]);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
acpi_os_printf("\"");
|
|
|
|
|
|
|
|
if (i == max_length && string[i]) {
|
|
|
|
acpi_os_printf("...");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ut_valid_acpi_char
|
|
|
|
*
|
|
|
|
* PARAMETERS: char - The character to be examined
|
|
|
|
* position - Byte position (0-3)
|
|
|
|
*
|
|
|
|
* RETURN: TRUE if the character is valid, FALSE otherwise
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Check for a valid ACPI character. Must be one of:
|
|
|
|
* 1) Upper case alpha
|
|
|
|
* 2) numeric
|
|
|
|
* 3) underscore
|
|
|
|
*
|
|
|
|
* We allow a '!' as the last character because of the ASF! table
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
u8 acpi_ut_valid_acpi_char(char character, u32 position)
|
|
|
|
{
|
|
|
|
|
|
|
|
if (!((character >= 'A' && character <= 'Z') ||
|
|
|
|
(character >= '0' && character <= '9') || (character == '_'))) {
|
|
|
|
|
|
|
|
/* Allow a '!' in the last position */
|
|
|
|
|
|
|
|
if (character == '!' && position == 3) {
|
|
|
|
return (TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ut_valid_acpi_name
|
|
|
|
*
|
2013-06-07 18:59:44 -06:00
|
|
|
* PARAMETERS: name - The name to be examined. Does not have to
|
|
|
|
* be NULL terminated string.
|
2013-01-11 05:08:51 -07:00
|
|
|
*
|
|
|
|
* RETURN: TRUE if the name is valid, FALSE otherwise
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Check for a valid ACPI name. Each character must be one of:
|
|
|
|
* 1) Upper case alpha
|
|
|
|
* 2) numeric
|
|
|
|
* 3) underscore
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
2013-06-07 18:59:44 -06:00
|
|
|
u8 acpi_ut_valid_acpi_name(char *name)
|
2013-01-11 05:08:51 -07:00
|
|
|
{
|
|
|
|
u32 i;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
|
|
|
|
for (i = 0; i < ACPI_NAME_SIZE; i++) {
|
2013-06-07 18:59:44 -06:00
|
|
|
if (!acpi_ut_valid_acpi_char(name[i], i)) {
|
2013-01-11 05:08:51 -07:00
|
|
|
return (FALSE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ut_repair_name
|
|
|
|
*
|
|
|
|
* PARAMETERS: name - The ACPI name to be repaired
|
|
|
|
*
|
|
|
|
* RETURN: Repaired version of the name
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
|
|
|
|
* return the new name. NOTE: the Name parameter must reside in
|
|
|
|
* read/write memory, cannot be a const.
|
|
|
|
*
|
|
|
|
* An ACPI Name must consist of valid ACPI characters. We will repair the name
|
|
|
|
* if necessary because we don't want to abort because of this, but we want
|
|
|
|
* all namespace names to be printable. A warning message is appropriate.
|
|
|
|
*
|
|
|
|
* This issue came up because there are in fact machines that exhibit
|
|
|
|
* this problem, and we want to be able to enable ACPI support for them,
|
|
|
|
* even though there are a few bad names.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
void acpi_ut_repair_name(char *name)
|
|
|
|
{
|
|
|
|
u32 i;
|
|
|
|
u8 found_bad_char = FALSE;
|
|
|
|
u32 original_name;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_NAME(ut_repair_name);
|
|
|
|
|
|
|
|
ACPI_MOVE_NAME(&original_name, name);
|
|
|
|
|
|
|
|
/* Check each character in the name */
|
|
|
|
|
|
|
|
for (i = 0; i < ACPI_NAME_SIZE; i++) {
|
|
|
|
if (acpi_ut_valid_acpi_char(name[i], i)) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Replace a bad character with something printable, yet technically
|
|
|
|
* still invalid. This prevents any collisions with existing "good"
|
|
|
|
* names in the namespace.
|
|
|
|
*/
|
|
|
|
name[i] = '*';
|
|
|
|
found_bad_char = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (found_bad_char) {
|
|
|
|
|
|
|
|
/* Report warning only if in strict mode or debug mode */
|
|
|
|
|
|
|
|
if (!acpi_gbl_enable_interpreter_slack) {
|
|
|
|
ACPI_WARNING((AE_INFO,
|
|
|
|
"Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
|
|
|
|
original_name, name));
|
|
|
|
} else {
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
|
"Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
|
|
|
|
original_name, name));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#if defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: ut_convert_backslashes
|
|
|
|
*
|
|
|
|
* PARAMETERS: pathname - File pathname string to be converted
|
|
|
|
*
|
|
|
|
* RETURN: Modifies the input Pathname
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Convert all backslashes (0x5C) to forward slashes (0x2F) within
|
|
|
|
* the entire input file pathname string.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
void ut_convert_backslashes(char *pathname)
|
|
|
|
{
|
|
|
|
|
|
|
|
if (!pathname) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (*pathname) {
|
|
|
|
if (*pathname == '\\') {
|
|
|
|
*pathname = '/';
|
|
|
|
}
|
|
|
|
|
|
|
|
pathname++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|