forked from Minki/linux
0fb3adf809
Was 256 bytes max. The original purpose of this constraint was to limit the amount of debug output. However, the string function in question (UtPrintString) is now used for the disassembler also, where 256 bytes is insufficient. Reported by RehabMan@GitHub. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Acked-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
587 lines
14 KiB
C
587 lines
14 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utstring - Common functions for strings and characters
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2013, 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"
|
|
#include "acnamesp.h"
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("utstring")
|
|
|
|
/*
|
|
* Non-ANSI C library functions - strlwr, strupr, stricmp, and a 64-bit
|
|
* version of strtoul.
|
|
*/
|
|
#ifdef ACPI_ASL_COMPILER
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_strlwr (strlwr)
|
|
*
|
|
* PARAMETERS: src_string - The source string to convert
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Convert string to lowercase
|
|
*
|
|
* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
|
|
*
|
|
******************************************************************************/
|
|
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)ACPI_TOLOWER(*string);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 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: Implementation of the non-ANSI stricmp function (compare
|
|
* strings with no case sensitivity)
|
|
*
|
|
******************************************************************************/
|
|
|
|
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);
|
|
}
|
|
#endif
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_strupr (strupr)
|
|
*
|
|
* PARAMETERS: src_string - The source string to convert
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Convert string to uppercase
|
|
*
|
|
* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
|
|
*
|
|
******************************************************************************/
|
|
|
|
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)ACPI_TOUPPER(*string);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_strtoul64
|
|
*
|
|
* PARAMETERS: string - Null terminated string
|
|
* base - Radix of the string: 16 or ACPI_ANY_BASE;
|
|
* ACPI_ANY_BASE means 'in behalf of to_integer'
|
|
* 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 current mode
|
|
* of the interpreter.
|
|
* NOTE: Does not support Octal strings, not needed.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer)
|
|
{
|
|
u32 this_digit = 0;
|
|
u64 return_value = 0;
|
|
u64 quotient;
|
|
u64 dividend;
|
|
u32 to_integer_op = (base == ACPI_ANY_BASE);
|
|
u32 mode32 = (acpi_gbl_integer_byte_width == 4);
|
|
u8 valid_digits = 0;
|
|
u8 sign_of0x = 0;
|
|
u8 term = 0;
|
|
|
|
ACPI_FUNCTION_TRACE_STR(ut_stroul64, string);
|
|
|
|
switch (base) {
|
|
case ACPI_ANY_BASE:
|
|
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) && (ACPI_IS_SPACE(*string) || *string == '\t')) {
|
|
string++;
|
|
}
|
|
|
|
if (to_integer_op) {
|
|
/*
|
|
* Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
|
|
* We need to determine if it is decimal or hexadecimal.
|
|
*/
|
|
if ((*string == '0') && (ACPI_TOLOWER(*(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) || ACPI_IS_SPACE(*string) || *string == '\t') {
|
|
if (to_integer_op) {
|
|
goto error_exit;
|
|
} else {
|
|
goto all_done;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Perform a 32-bit or 64-bit conversion, depending upon the current
|
|
* execution mode of the interpreter
|
|
*/
|
|
dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
|
|
|
|
/* Main loop: convert the string to a 32- or 64-bit integer */
|
|
|
|
while (*string) {
|
|
if (ACPI_IS_DIGIT(*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)ACPI_TOUPPER(*string);
|
|
if (ACPI_IS_XDIGIT((char)this_digit)) {
|
|
|
|
/* Convert ASCII Hex char to value */
|
|
|
|
this_digit = this_digit - 'A' + 10;
|
|
} else {
|
|
term = 1;
|
|
}
|
|
}
|
|
|
|
if (term) {
|
|
if (to_integer_op) {
|
|
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) && mode32))) {
|
|
/*
|
|
* This is to_integer operation case.
|
|
* No any 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 (to_integer_op) {
|
|
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 */
|
|
|
|
if (base == 10) {
|
|
return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT);
|
|
} else {
|
|
return_ACPI_STATUS(AE_BAD_HEX_CONSTANT);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_print_string
|
|
*
|
|
* PARAMETERS: string - Null terminated ASCII string
|
|
* max_length - Maximum output length. Used to constrain the
|
|
* length of strings during debug output only.
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
|
|
* sequences.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ut_print_string(char *string, u16 max_length)
|
|
{
|
|
u32 i;
|
|
|
|
if (!string) {
|
|
acpi_os_printf("<\"NULL STRING PTR\">");
|
|
return;
|
|
}
|
|
|
|
acpi_os_printf("\"");
|
|
for (i = 0; string[i] && (i < max_length); i++) {
|
|
|
|
/* Escape sequences */
|
|
|
|
switch (string[i]) {
|
|
case 0x07:
|
|
|
|
acpi_os_printf("\\a"); /* BELL */
|
|
break;
|
|
|
|
case 0x08:
|
|
|
|
acpi_os_printf("\\b"); /* BACKSPACE */
|
|
break;
|
|
|
|
case 0x0C:
|
|
|
|
acpi_os_printf("\\f"); /* FORMFEED */
|
|
break;
|
|
|
|
case 0x0A:
|
|
|
|
acpi_os_printf("\\n"); /* LINEFEED */
|
|
break;
|
|
|
|
case 0x0D:
|
|
|
|
acpi_os_printf("\\r"); /* CARRIAGE RETURN */
|
|
break;
|
|
|
|
case 0x09:
|
|
|
|
acpi_os_printf("\\t"); /* HORIZONTAL TAB */
|
|
break;
|
|
|
|
case 0x0B:
|
|
|
|
acpi_os_printf("\\v"); /* VERTICAL TAB */
|
|
break;
|
|
|
|
case '\'': /* Single Quote */
|
|
case '\"': /* Double Quote */
|
|
case '\\': /* Backslash */
|
|
|
|
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
|
|
*
|
|
* PARAMETERS: name - The name to be examined. Does not have to
|
|
* be NULL terminated string.
|
|
*
|
|
* 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
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_ut_valid_acpi_name(char *name)
|
|
{
|
|
u32 i;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
for (i = 0; i < ACPI_NAME_SIZE; i++) {
|
|
if (!acpi_ut_valid_acpi_char(name[i], i)) {
|
|
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
|