2014-07-08 10:07:00 +08:00
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/******************************************************************************
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*
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* Module Name: utprint - Formatted printing routines
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*
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*****************************************************************************/
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/*
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2015-02-05 15:20:45 +08:00
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* Copyright (C) 2000 - 2015, Intel Corp.
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2014-07-08 10:07:00 +08:00
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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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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utprint")
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#define ACPI_FORMAT_SIGN 0x01
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#define ACPI_FORMAT_SIGN_PLUS 0x02
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#define ACPI_FORMAT_SIGN_PLUS_SPACE 0x04
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#define ACPI_FORMAT_ZERO 0x08
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#define ACPI_FORMAT_LEFT 0x10
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#define ACPI_FORMAT_UPPER 0x20
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#define ACPI_FORMAT_PREFIX 0x40
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/* Local prototypes */
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static acpi_size
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acpi_ut_bound_string_length(const char *string, acpi_size count);
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static char *acpi_ut_bound_string_output(char *string, const char *end, char c);
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static char *acpi_ut_format_number(char *string,
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char *end,
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u64 number,
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u8 base, s32 width, s32 precision, u8 type);
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static char *acpi_ut_put_number(char *string, u64 number, u8 base, u8 upper);
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2014-07-08 10:08:13 +08:00
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/* Module globals */
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static const char acpi_gbl_lower_hex_digits[] = "0123456789abcdef";
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static const char acpi_gbl_upper_hex_digits[] = "0123456789ABCDEF";
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2014-07-08 10:07:00 +08:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_bound_string_length
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*
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* PARAMETERS: string - String with boundary
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* count - Boundary of the string
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*
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2014-07-08 10:08:13 +08:00
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* RETURN: Length of the string. Less than or equal to Count.
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2014-07-08 10:07:00 +08:00
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*
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* DESCRIPTION: Calculate the length of a string with boundary.
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*
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******************************************************************************/
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static acpi_size
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acpi_ut_bound_string_length(const char *string, acpi_size count)
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{
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u32 length = 0;
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while (*string && count) {
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length++;
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string++;
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count--;
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}
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return (length);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_bound_string_output
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*
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* PARAMETERS: string - String with boundary
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* end - Boundary of the string
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* c - Character to be output to the string
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*
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* RETURN: Updated position for next valid character
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*
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* DESCRIPTION: Output a character into a string with boundary check.
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*
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******************************************************************************/
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static char *acpi_ut_bound_string_output(char *string, const char *end, char c)
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{
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if (string < end) {
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*string = c;
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}
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2014-07-08 10:08:13 +08:00
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++string;
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2014-07-08 10:07:00 +08:00
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return (string);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_put_number
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*
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* PARAMETERS: string - Buffer to hold reverse-ordered string
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* number - Integer to be converted
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* base - Base of the integer
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* upper - Whether or not using upper cased digits
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*
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* RETURN: Updated position for next valid character
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*
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* DESCRIPTION: Convert an integer into a string, note that, the string holds a
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* reversed ordered number without the trailing zero.
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*
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******************************************************************************/
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static char *acpi_ut_put_number(char *string, u64 number, u8 base, u8 upper)
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{
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const char *digits;
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u64 digit_index;
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char *pos;
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pos = string;
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2014-07-08 10:08:13 +08:00
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digits = upper ? acpi_gbl_upper_hex_digits : acpi_gbl_lower_hex_digits;
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2014-07-08 10:07:00 +08:00
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if (number == 0) {
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*(pos++) = '0';
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} else {
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while (number) {
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(void)acpi_ut_divide(number, base, &number,
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&digit_index);
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*(pos++) = digits[digit_index];
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}
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}
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2014-07-08 10:08:13 +08:00
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/* *(Pos++) = '0'; */
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2014-07-08 10:07:00 +08:00
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return (pos);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_scan_number
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*
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* PARAMETERS: string - String buffer
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* number_ptr - Where the number is returned
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*
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* RETURN: Updated position for next valid character
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*
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* DESCRIPTION: Scan a string for a decimal integer.
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*
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******************************************************************************/
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const char *acpi_ut_scan_number(const char *string, u64 *number_ptr)
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{
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u64 number = 0;
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while (ACPI_IS_DIGIT(*string)) {
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number *= 10;
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number += *(string++) - '0';
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}
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2014-07-08 10:08:13 +08:00
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*number_ptr = number;
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2014-07-08 10:07:00 +08:00
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return (string);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_print_number
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*
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* PARAMETERS: string - String buffer
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* number - The number to be converted
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*
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* RETURN: Updated position for next valid character
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*
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* DESCRIPTION: Print a decimal integer into a string.
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*
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******************************************************************************/
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const char *acpi_ut_print_number(char *string, u64 number)
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{
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char ascii_string[20];
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const char *pos1;
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char *pos2;
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pos1 = acpi_ut_put_number(ascii_string, number, 10, FALSE);
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pos2 = string;
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while (pos1 != ascii_string) {
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*(pos2++) = *(--pos1);
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}
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2014-07-08 10:08:13 +08:00
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*pos2 = 0;
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2014-07-08 10:07:00 +08:00
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return (string);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_format_number
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*
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* PARAMETERS: string - String buffer with boundary
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* end - Boundary of the string
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* number - The number to be converted
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* base - Base of the integer
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* width - Field width
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* precision - Precision of the integer
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* type - Special printing flags
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*
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* RETURN: Updated position for next valid character
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*
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* DESCRIPTION: Print an integer into a string with any base and any precision.
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*
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******************************************************************************/
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static char *acpi_ut_format_number(char *string,
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char *end,
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u64 number,
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u8 base, s32 width, s32 precision, u8 type)
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{
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2014-07-30 12:20:26 +08:00
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char *pos;
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2014-07-08 10:07:00 +08:00
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char sign;
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char zero;
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u8 need_prefix;
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u8 upper;
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s32 i;
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char reversed_string[66];
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2014-07-08 10:08:13 +08:00
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/* Parameter validation */
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2014-07-08 10:07:00 +08:00
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if (base < 2 || base > 16) {
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2014-07-08 10:08:13 +08:00
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return (NULL);
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2014-07-08 10:07:00 +08:00
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}
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2014-07-08 10:08:13 +08:00
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2014-07-08 10:07:00 +08:00
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if (type & ACPI_FORMAT_LEFT) {
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type &= ~ACPI_FORMAT_ZERO;
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}
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need_prefix = ((type & ACPI_FORMAT_PREFIX)
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&& base != 10) ? TRUE : FALSE;
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upper = (type & ACPI_FORMAT_UPPER) ? TRUE : FALSE;
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zero = (type & ACPI_FORMAT_ZERO) ? '0' : ' ';
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/* Calculate size according to sign and prefix */
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sign = '\0';
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if (type & ACPI_FORMAT_SIGN) {
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if ((s64) number < 0) {
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sign = '-';
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number = -(s64) number;
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width--;
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} else if (type & ACPI_FORMAT_SIGN_PLUS) {
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sign = '+';
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width--;
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} else if (type & ACPI_FORMAT_SIGN_PLUS_SPACE) {
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sign = ' ';
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width--;
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}
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}
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if (need_prefix) {
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width--;
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if (base == 16) {
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width--;
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}
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}
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/* Generate full string in reverse order */
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2014-07-30 12:20:26 +08:00
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pos = acpi_ut_put_number(reversed_string, number, base, upper);
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i = ACPI_PTR_DIFF(pos, reversed_string);
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2014-07-08 10:07:00 +08:00
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/* Printing 100 using %2d gives "100", not "00" */
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if (i > precision) {
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precision = i;
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}
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2014-07-08 10:08:13 +08:00
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2014-07-08 10:07:00 +08:00
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width -= precision;
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/* Output the string */
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if (!(type & (ACPI_FORMAT_ZERO | ACPI_FORMAT_LEFT))) {
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while (--width >= 0) {
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string = acpi_ut_bound_string_output(string, end, ' ');
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}
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}
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if (sign) {
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string = acpi_ut_bound_string_output(string, end, sign);
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}
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if (need_prefix) {
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string = acpi_ut_bound_string_output(string, end, '0');
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if (base == 16) {
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string = acpi_ut_bound_string_output(string, end,
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upper ? 'X' : 'x');
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}
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}
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if (!(type & ACPI_FORMAT_LEFT)) {
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while (--width >= 0) {
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string = acpi_ut_bound_string_output(string, end, zero);
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}
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}
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2014-07-08 10:08:13 +08:00
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2014-07-08 10:07:00 +08:00
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while (i <= --precision) {
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string = acpi_ut_bound_string_output(string, end, '0');
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}
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while (--i >= 0) {
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string = acpi_ut_bound_string_output(string, end,
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reversed_string[i]);
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}
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while (--width >= 0) {
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string = acpi_ut_bound_string_output(string, end, ' ');
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}
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return (string);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_vsnprintf
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*
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* PARAMETERS: string - String with boundary
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* size - Boundary of the string
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* format - Standard printf format
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* args - Argument list
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*
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2014-07-08 10:08:13 +08:00
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* RETURN: Number of bytes actually written.
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2014-07-08 10:07:00 +08:00
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*
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* DESCRIPTION: Formatted output to a string using argument list pointer.
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*
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******************************************************************************/
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int
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acpi_ut_vsnprintf(char *string,
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acpi_size size, const char *format, va_list args)
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{
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u8 base = 10;
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u8 type = 0;
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s32 width = -1;
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s32 precision = -1;
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char qualifier = 0;
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u64 number;
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char *pos;
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char *end;
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char c;
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const char *s;
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const void *p;
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s32 length;
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int i;
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pos = string;
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end = string + size;
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for (; *format; ++format) {
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if (*format != '%') {
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|
|
pos = acpi_ut_bound_string_output(pos, end, *format);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Process sign */
|
|
|
|
|
|
|
|
do {
|
|
|
|
++format;
|
|
|
|
if (*format == '#') {
|
|
|
|
type |= ACPI_FORMAT_PREFIX;
|
|
|
|
} else if (*format == '0') {
|
|
|
|
type |= ACPI_FORMAT_ZERO;
|
|
|
|
} else if (*format == '+') {
|
|
|
|
type |= ACPI_FORMAT_SIGN_PLUS;
|
|
|
|
} else if (*format == ' ') {
|
|
|
|
type |= ACPI_FORMAT_SIGN_PLUS_SPACE;
|
|
|
|
} else if (*format == '-') {
|
|
|
|
type |= ACPI_FORMAT_LEFT;
|
|
|
|
} else {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} while (1);
|
|
|
|
|
|
|
|
/* Process width */
|
|
|
|
|
2014-07-30 12:21:07 +08:00
|
|
|
width = -1;
|
2014-07-08 10:07:00 +08:00
|
|
|
if (ACPI_IS_DIGIT(*format)) {
|
|
|
|
format = acpi_ut_scan_number(format, &number);
|
|
|
|
width = (s32) number;
|
|
|
|
} else if (*format == '*') {
|
|
|
|
++format;
|
|
|
|
width = va_arg(args, int);
|
|
|
|
if (width < 0) {
|
|
|
|
width = -width;
|
|
|
|
type |= ACPI_FORMAT_LEFT;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Process precision */
|
|
|
|
|
2014-07-30 12:21:07 +08:00
|
|
|
precision = -1;
|
2014-07-08 10:07:00 +08:00
|
|
|
if (*format == '.') {
|
|
|
|
++format;
|
|
|
|
if (ACPI_IS_DIGIT(*format)) {
|
|
|
|
format = acpi_ut_scan_number(format, &number);
|
|
|
|
precision = (s32) number;
|
|
|
|
} else if (*format == '*') {
|
|
|
|
++format;
|
|
|
|
precision = va_arg(args, int);
|
|
|
|
}
|
|
|
|
if (precision < 0) {
|
|
|
|
precision = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Process qualifier */
|
|
|
|
|
2014-07-30 12:21:07 +08:00
|
|
|
qualifier = -1;
|
2014-07-08 10:07:00 +08:00
|
|
|
if (*format == 'h' || *format == 'l' || *format == 'L') {
|
|
|
|
qualifier = *format;
|
|
|
|
++format;
|
2014-07-08 10:08:13 +08:00
|
|
|
|
2014-07-08 10:07:00 +08:00
|
|
|
if (qualifier == 'l' && *format == 'l') {
|
|
|
|
qualifier = 'L';
|
|
|
|
++format;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (*format) {
|
|
|
|
case '%':
|
|
|
|
|
|
|
|
pos = acpi_ut_bound_string_output(pos, end, '%');
|
|
|
|
continue;
|
|
|
|
|
|
|
|
case 'c':
|
|
|
|
|
|
|
|
if (!(type & ACPI_FORMAT_LEFT)) {
|
|
|
|
while (--width > 0) {
|
|
|
|
pos =
|
|
|
|
acpi_ut_bound_string_output(pos,
|
|
|
|
end,
|
|
|
|
' ');
|
|
|
|
}
|
|
|
|
}
|
2014-07-08 10:08:13 +08:00
|
|
|
|
2014-07-08 10:07:00 +08:00
|
|
|
c = (char)va_arg(args, int);
|
|
|
|
pos = acpi_ut_bound_string_output(pos, end, c);
|
2014-07-08 10:08:13 +08:00
|
|
|
|
2014-07-08 10:07:00 +08:00
|
|
|
while (--width > 0) {
|
|
|
|
pos =
|
|
|
|
acpi_ut_bound_string_output(pos, end, ' ');
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
|
|
|
|
case 's':
|
|
|
|
|
|
|
|
s = va_arg(args, char *);
|
|
|
|
if (!s) {
|
|
|
|
s = "<NULL>";
|
|
|
|
}
|
|
|
|
length = acpi_ut_bound_string_length(s, precision);
|
|
|
|
if (!(type & ACPI_FORMAT_LEFT)) {
|
|
|
|
while (length < width--) {
|
|
|
|
pos =
|
|
|
|
acpi_ut_bound_string_output(pos,
|
|
|
|
end,
|
|
|
|
' ');
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for (i = 0; i < length; ++i) {
|
|
|
|
pos = acpi_ut_bound_string_output(pos, end, *s);
|
|
|
|
++s;
|
|
|
|
}
|
|
|
|
while (length < width--) {
|
|
|
|
pos =
|
|
|
|
acpi_ut_bound_string_output(pos, end, ' ');
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
|
|
|
|
case 'o':
|
|
|
|
|
|
|
|
base = 8;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'X':
|
|
|
|
|
|
|
|
type |= ACPI_FORMAT_UPPER;
|
|
|
|
|
|
|
|
case 'x':
|
|
|
|
|
|
|
|
base = 16;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'd':
|
|
|
|
case 'i':
|
|
|
|
|
|
|
|
type |= ACPI_FORMAT_SIGN;
|
|
|
|
|
|
|
|
case 'u':
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'p':
|
|
|
|
|
|
|
|
if (width == -1) {
|
|
|
|
width = 2 * sizeof(void *);
|
|
|
|
type |= ACPI_FORMAT_ZERO;
|
|
|
|
}
|
2014-07-08 10:08:13 +08:00
|
|
|
|
2014-07-08 10:07:00 +08:00
|
|
|
p = va_arg(args, void *);
|
|
|
|
pos = acpi_ut_format_number(pos, end,
|
2014-07-08 10:08:13 +08:00
|
|
|
ACPI_TO_INTEGER(p), 16,
|
|
|
|
width, precision, type);
|
2014-07-08 10:07:00 +08:00
|
|
|
continue;
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
|
|
|
pos = acpi_ut_bound_string_output(pos, end, '%');
|
|
|
|
if (*format) {
|
|
|
|
pos =
|
|
|
|
acpi_ut_bound_string_output(pos, end,
|
|
|
|
*format);
|
|
|
|
} else {
|
|
|
|
--format;
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (qualifier == 'L') {
|
|
|
|
number = va_arg(args, u64);
|
|
|
|
if (type & ACPI_FORMAT_SIGN) {
|
|
|
|
number = (s64) number;
|
|
|
|
}
|
|
|
|
} else if (qualifier == 'l') {
|
|
|
|
number = va_arg(args, unsigned long);
|
|
|
|
if (type & ACPI_FORMAT_SIGN) {
|
|
|
|
number = (s32) number;
|
|
|
|
}
|
|
|
|
} else if (qualifier == 'h') {
|
|
|
|
number = (u16)va_arg(args, int);
|
|
|
|
if (type & ACPI_FORMAT_SIGN) {
|
|
|
|
number = (s16) number;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
number = va_arg(args, unsigned int);
|
|
|
|
if (type & ACPI_FORMAT_SIGN) {
|
|
|
|
number = (signed int)number;
|
|
|
|
}
|
|
|
|
}
|
2014-07-08 10:08:13 +08:00
|
|
|
|
2014-07-08 10:07:00 +08:00
|
|
|
pos = acpi_ut_format_number(pos, end, number, base,
|
|
|
|
width, precision, type);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (size > 0) {
|
|
|
|
if (pos < end) {
|
|
|
|
*pos = '\0';
|
|
|
|
} else {
|
|
|
|
end[-1] = '\0';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (ACPI_PTR_DIFF(pos, string));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ut_snprintf
|
|
|
|
*
|
|
|
|
* PARAMETERS: string - String with boundary
|
|
|
|
* size - Boundary of the string
|
|
|
|
* Format, ... - Standard printf format
|
|
|
|
*
|
2014-07-08 10:08:13 +08:00
|
|
|
* RETURN: Number of bytes actually written.
|
2014-07-08 10:07:00 +08:00
|
|
|
*
|
|
|
|
* DESCRIPTION: Formatted output to a string.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
int acpi_ut_snprintf(char *string, acpi_size size, const char *format, ...)
|
|
|
|
{
|
|
|
|
va_list args;
|
|
|
|
int length;
|
|
|
|
|
|
|
|
va_start(args, format);
|
|
|
|
length = acpi_ut_vsnprintf(string, size, format, args);
|
|
|
|
va_end(args);
|
|
|
|
|
|
|
|
return (length);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef ACPI_APPLICATION
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ut_file_vprintf
|
|
|
|
*
|
|
|
|
* PARAMETERS: file - File descriptor
|
|
|
|
* format - Standard printf format
|
|
|
|
* args - Argument list
|
|
|
|
*
|
2014-07-08 10:08:13 +08:00
|
|
|
* RETURN: Number of bytes actually written.
|
2014-07-08 10:07:00 +08:00
|
|
|
*
|
|
|
|
* DESCRIPTION: Formatted output to a file using argument list pointer.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
int acpi_ut_file_vprintf(ACPI_FILE file, const char *format, va_list args)
|
|
|
|
{
|
|
|
|
acpi_cpu_flags flags;
|
|
|
|
int length;
|
|
|
|
|
|
|
|
flags = acpi_os_acquire_lock(acpi_gbl_print_lock);
|
|
|
|
length = acpi_ut_vsnprintf(acpi_gbl_print_buffer,
|
|
|
|
sizeof(acpi_gbl_print_buffer), format, args);
|
2014-07-08 10:08:13 +08:00
|
|
|
|
2014-07-08 10:07:00 +08:00
|
|
|
(void)acpi_os_write_file(file, acpi_gbl_print_buffer, length, 1);
|
|
|
|
acpi_os_release_lock(acpi_gbl_print_lock, flags);
|
|
|
|
|
|
|
|
return (length);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ut_file_printf
|
|
|
|
*
|
|
|
|
* PARAMETERS: file - File descriptor
|
|
|
|
* Format, ... - Standard printf format
|
|
|
|
*
|
2014-07-08 10:08:13 +08:00
|
|
|
* RETURN: Number of bytes actually written.
|
2014-07-08 10:07:00 +08:00
|
|
|
*
|
|
|
|
* DESCRIPTION: Formatted output to a file.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
int acpi_ut_file_printf(ACPI_FILE file, const char *format, ...)
|
|
|
|
{
|
|
|
|
va_list args;
|
|
|
|
int length;
|
|
|
|
|
|
|
|
va_start(args, format);
|
|
|
|
length = acpi_ut_file_vprintf(file, format, args);
|
|
|
|
va_end(args);
|
|
|
|
|
|
|
|
return (length);
|
|
|
|
}
|
|
|
|
#endif
|