mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-09 20:14:09 +08:00
3a05be7575
ACPICA commit 795e136d2ac77c1c8b091fba019b5fe36a44a323 Fixes a problem with the merger of the two internal versions of this function. Make the maximum integer width (32-bit or 64-bit) a parameter to the function so that it no longer exclusively uses the integer width specified in the DSDT/SSDT. ACPICA BZ 1260 Link: https://github.com/acpica/acpica/commit/795e136d Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
556 lines
13 KiB
C
556 lines
13 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utnonansi - Non-ansi C library functions
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2016, Intel Corp.
|
|
* 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 "accommon.h"
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("utnonansi")
|
|
|
|
/*
|
|
* Non-ANSI C library functions - strlwr, strupr, stricmp, and a 64-bit
|
|
* version of strtoul.
|
|
*/
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_strlwr (strlwr)
|
|
*
|
|
* PARAMETERS: src_string - The source string to convert
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Convert a string to lowercase
|
|
*
|
|
******************************************************************************/
|
|
void acpi_ut_strlwr(char *src_string)
|
|
{
|
|
char *string;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
if (!src_string) {
|
|
return;
|
|
}
|
|
|
|
/* Walk entire string, lowercasing the letters */
|
|
|
|
for (string = src_string; *string; string++) {
|
|
*string = (char)tolower((int)*string);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_strupr (strupr)
|
|
*
|
|
* PARAMETERS: src_string - The source string to convert
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Convert a string to uppercase
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ut_strupr(char *src_string)
|
|
{
|
|
char *string;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
if (!src_string) {
|
|
return;
|
|
}
|
|
|
|
/* Walk entire string, uppercasing the letters */
|
|
|
|
for (string = src_string; *string; string++) {
|
|
*string = (char)toupper((int)*string);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_stricmp (stricmp)
|
|
*
|
|
* PARAMETERS: string1 - first string to compare
|
|
* string2 - second string to compare
|
|
*
|
|
* RETURN: int that signifies string relationship. Zero means strings
|
|
* are equal.
|
|
*
|
|
* DESCRIPTION: Case-insensitive string compare. Implementation of the
|
|
* non-ANSI stricmp function.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int acpi_ut_stricmp(char *string1, char *string2)
|
|
{
|
|
int c1;
|
|
int c2;
|
|
|
|
do {
|
|
c1 = tolower((int)*string1);
|
|
c2 = tolower((int)*string2);
|
|
|
|
string1++;
|
|
string2++;
|
|
}
|
|
while ((c1 == c2) && (c1));
|
|
|
|
return (c1 - c2);
|
|
}
|
|
|
|
#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION)
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_safe_strcpy, acpi_ut_safe_strcat, acpi_ut_safe_strncat
|
|
*
|
|
* PARAMETERS: Adds a "DestSize" parameter to each of the standard string
|
|
* functions. This is the size of the Destination buffer.
|
|
*
|
|
* RETURN: TRUE if the operation would overflow the destination buffer.
|
|
*
|
|
* DESCRIPTION: Safe versions of standard Clib string functions. Ensure that
|
|
* the result of the operation will not overflow the output string
|
|
* buffer.
|
|
*
|
|
* NOTE: These functions are typically only helpful for processing
|
|
* user input and command lines. For most ACPICA code, the
|
|
* required buffer length is precisely calculated before buffer
|
|
* allocation, so the use of these functions is unnecessary.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_ut_safe_strcpy(char *dest, acpi_size dest_size, char *source)
|
|
{
|
|
|
|
if (strlen(source) >= dest_size) {
|
|
return (TRUE);
|
|
}
|
|
|
|
strcpy(dest, source);
|
|
return (FALSE);
|
|
}
|
|
|
|
u8 acpi_ut_safe_strcat(char *dest, acpi_size dest_size, char *source)
|
|
{
|
|
|
|
if ((strlen(dest) + strlen(source)) >= dest_size) {
|
|
return (TRUE);
|
|
}
|
|
|
|
strcat(dest, source);
|
|
return (FALSE);
|
|
}
|
|
|
|
u8
|
|
acpi_ut_safe_strncat(char *dest,
|
|
acpi_size dest_size,
|
|
char *source, acpi_size max_transfer_length)
|
|
{
|
|
acpi_size actual_transfer_length;
|
|
|
|
actual_transfer_length = ACPI_MIN(max_transfer_length, strlen(source));
|
|
|
|
if ((strlen(dest) + actual_transfer_length) >= dest_size) {
|
|
return (TRUE);
|
|
}
|
|
|
|
strncat(dest, source, max_transfer_length);
|
|
return (FALSE);
|
|
}
|
|
#endif
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_strtoul64
|
|
*
|
|
* PARAMETERS: string - Null terminated string
|
|
* base - Radix of the string: 16 or 10 or
|
|
* ACPI_ANY_BASE
|
|
* max_integer_byte_width - Maximum allowable integer,in bytes:
|
|
* 4 or 8 (32 or 64 bits)
|
|
* ret_integer - Where the converted integer is
|
|
* returned
|
|
*
|
|
* RETURN: Status and Converted value
|
|
*
|
|
* DESCRIPTION: Convert a string into an unsigned value. Performs either a
|
|
* 32-bit or 64-bit conversion, depending on the input integer
|
|
* size (often the current mode of the interpreter).
|
|
*
|
|
* NOTES: Negative numbers are not supported, as they are not supported
|
|
* by ACPI.
|
|
*
|
|
* acpi_gbl_integer_byte_width should be set to the proper width.
|
|
* For the core ACPICA code, this width depends on the DSDT
|
|
* version. For iASL, the default byte width is always 8 for the
|
|
* parser, but error checking is performed later to flag cases
|
|
* where a 64-bit constant is defined in a 32-bit DSDT/SSDT.
|
|
*
|
|
* Does not support Octal strings, not needed at this time.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_strtoul64(char *string,
|
|
u32 base, u32 max_integer_byte_width, u64 *ret_integer)
|
|
{
|
|
u32 this_digit = 0;
|
|
u64 return_value = 0;
|
|
u64 quotient;
|
|
u64 dividend;
|
|
u8 valid_digits = 0;
|
|
u8 sign_of0x = 0;
|
|
u8 term = 0;
|
|
|
|
ACPI_FUNCTION_TRACE_STR(ut_strtoul64, string);
|
|
|
|
switch (base) {
|
|
case ACPI_ANY_BASE:
|
|
case 10:
|
|
case 16:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Invalid Base */
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (!string) {
|
|
goto error_exit;
|
|
}
|
|
|
|
/* Skip over any white space in the buffer */
|
|
|
|
while ((*string) && (isspace((int)*string) || *string == '\t')) {
|
|
string++;
|
|
}
|
|
|
|
if (base == ACPI_ANY_BASE) {
|
|
/*
|
|
* Base equal to ACPI_ANY_BASE means 'Either decimal or hex'.
|
|
* We need to determine if it is decimal or hexadecimal.
|
|
*/
|
|
if ((*string == '0') && (tolower((int)*(string + 1)) == 'x')) {
|
|
sign_of0x = 1;
|
|
base = 16;
|
|
|
|
/* Skip over the leading '0x' */
|
|
string += 2;
|
|
} else {
|
|
base = 10;
|
|
}
|
|
}
|
|
|
|
/* Any string left? Check that '0x' is not followed by white space. */
|
|
|
|
if (!(*string) || isspace((int)*string) || *string == '\t') {
|
|
if (base == ACPI_ANY_BASE) {
|
|
goto error_exit;
|
|
} else {
|
|
goto all_done;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Perform a 32-bit or 64-bit conversion, depending upon the input
|
|
* byte width
|
|
*/
|
|
dividend = (max_integer_byte_width <= ACPI_MAX32_BYTE_WIDTH) ?
|
|
ACPI_UINT32_MAX : ACPI_UINT64_MAX;
|
|
|
|
/* Main loop: convert the string to a 32- or 64-bit integer */
|
|
|
|
while (*string) {
|
|
if (isdigit((int)*string)) {
|
|
|
|
/* Convert ASCII 0-9 to Decimal value */
|
|
|
|
this_digit = ((u8)*string) - '0';
|
|
} else if (base == 10) {
|
|
|
|
/* Digit is out of range; possible in to_integer case only */
|
|
|
|
term = 1;
|
|
} else {
|
|
this_digit = (u8)toupper((int)*string);
|
|
if (isxdigit((int)this_digit)) {
|
|
|
|
/* Convert ASCII Hex char to value */
|
|
|
|
this_digit = this_digit - 'A' + 10;
|
|
} else {
|
|
term = 1;
|
|
}
|
|
}
|
|
|
|
if (term) {
|
|
if (base == ACPI_ANY_BASE) {
|
|
goto error_exit;
|
|
} else {
|
|
break;
|
|
}
|
|
} else if ((valid_digits == 0) && (this_digit == 0)
|
|
&& !sign_of0x) {
|
|
|
|
/* Skip zeros */
|
|
string++;
|
|
continue;
|
|
}
|
|
|
|
valid_digits++;
|
|
|
|
if (sign_of0x && ((valid_digits > 16) ||
|
|
((valid_digits > 8)
|
|
&& (max_integer_byte_width <=
|
|
ACPI_MAX32_BYTE_WIDTH)))) {
|
|
/*
|
|
* This is to_integer operation case.
|
|
* No restrictions for string-to-integer conversion,
|
|
* see ACPI spec.
|
|
*/
|
|
goto error_exit;
|
|
}
|
|
|
|
/* Divide the digit into the correct position */
|
|
|
|
(void)acpi_ut_short_divide((dividend - (u64)this_digit), base,
|
|
"ient, NULL);
|
|
|
|
if (return_value > quotient) {
|
|
if (base == ACPI_ANY_BASE) {
|
|
goto error_exit;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return_value *= base;
|
|
return_value += this_digit;
|
|
string++;
|
|
}
|
|
|
|
/* All done, normal exit */
|
|
|
|
all_done:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
|
|
ACPI_FORMAT_UINT64(return_value)));
|
|
|
|
*ret_integer = return_value;
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
error_exit:
|
|
|
|
/* Base was set/validated above (10 or 16) */
|
|
|
|
if (base == 10) {
|
|
return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT);
|
|
} else {
|
|
return_ACPI_STATUS(AE_BAD_HEX_CONSTANT);
|
|
}
|
|
}
|
|
|
|
#ifdef _OBSOLETE_FUNCTIONS
|
|
/* Removed: 01/2016 */
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: strtoul64
|
|
*
|
|
* PARAMETERS: string - Null terminated string
|
|
* terminater - Where a pointer to the terminating byte
|
|
* is returned
|
|
* base - Radix of the string
|
|
*
|
|
* RETURN: Converted value
|
|
*
|
|
* DESCRIPTION: Convert a string into an unsigned value.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status strtoul64(char *string, u32 base, u64 *ret_integer)
|
|
{
|
|
u32 index;
|
|
u32 sign;
|
|
u64 return_value = 0;
|
|
acpi_status status = AE_OK;
|
|
|
|
*ret_integer = 0;
|
|
|
|
switch (base) {
|
|
case 0:
|
|
case 8:
|
|
case 10:
|
|
case 16:
|
|
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* The specified Base parameter is not in the domain of
|
|
* this function:
|
|
*/
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Skip over any white space in the buffer: */
|
|
|
|
while (isspace((int)*string) || *string == '\t') {
|
|
++string;
|
|
}
|
|
|
|
/*
|
|
* The buffer may contain an optional plus or minus sign.
|
|
* If it does, then skip over it but remember what is was:
|
|
*/
|
|
if (*string == '-') {
|
|
sign = ACPI_SIGN_NEGATIVE;
|
|
++string;
|
|
} else if (*string == '+') {
|
|
++string;
|
|
sign = ACPI_SIGN_POSITIVE;
|
|
} else {
|
|
sign = ACPI_SIGN_POSITIVE;
|
|
}
|
|
|
|
/*
|
|
* If the input parameter Base is zero, then we need to
|
|
* determine if it is octal, decimal, or hexadecimal:
|
|
*/
|
|
if (base == 0) {
|
|
if (*string == '0') {
|
|
if (tolower((int)*(++string)) == 'x') {
|
|
base = 16;
|
|
++string;
|
|
} else {
|
|
base = 8;
|
|
}
|
|
} else {
|
|
base = 10;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* For octal and hexadecimal bases, skip over the leading
|
|
* 0 or 0x, if they are present.
|
|
*/
|
|
if (base == 8 && *string == '0') {
|
|
string++;
|
|
}
|
|
|
|
if (base == 16 && *string == '0' && tolower((int)*(++string)) == 'x') {
|
|
string++;
|
|
}
|
|
|
|
/* Main loop: convert the string to an unsigned long */
|
|
|
|
while (*string) {
|
|
if (isdigit((int)*string)) {
|
|
index = ((u8)*string) - '0';
|
|
} else {
|
|
index = (u8)toupper((int)*string);
|
|
if (isupper((int)index)) {
|
|
index = index - 'A' + 10;
|
|
} else {
|
|
goto error_exit;
|
|
}
|
|
}
|
|
|
|
if (index >= base) {
|
|
goto error_exit;
|
|
}
|
|
|
|
/* Check to see if value is out of range: */
|
|
|
|
if (return_value > ((ACPI_UINT64_MAX - (u64)index) / (u64)base)) {
|
|
goto error_exit;
|
|
} else {
|
|
return_value *= base;
|
|
return_value += index;
|
|
}
|
|
|
|
++string;
|
|
}
|
|
|
|
/* If a minus sign was present, then "the conversion is negated": */
|
|
|
|
if (sign == ACPI_SIGN_NEGATIVE) {
|
|
return_value = (ACPI_UINT32_MAX - return_value) + 1;
|
|
}
|
|
|
|
*ret_integer = return_value;
|
|
return (status);
|
|
|
|
error_exit:
|
|
switch (base) {
|
|
case 8:
|
|
|
|
status = AE_BAD_OCTAL_CONSTANT;
|
|
break;
|
|
|
|
case 10:
|
|
|
|
status = AE_BAD_DECIMAL_CONSTANT;
|
|
break;
|
|
|
|
case 16:
|
|
|
|
status = AE_BAD_HEX_CONSTANT;
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Base validated above */
|
|
|
|
break;
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
#endif
|