[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / acpica / utstring.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, &quotient, 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
 *
 * RETURN:      None
 *
 * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
 *              sequences.
 *
 ******************************************************************************/

void acpi_ut_print_string(char *string, u8 max_length)
{
	u32 i;

	if (!string) {
		acpi_os_printf("<\"NULL STRING PTR\">");
		return;
	}

	acpi_os_printf("\"");
	for (i = 0; (i < max_length) && string[i]; 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
 *
 * 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(u32 name)
{
	u32 i;

	ACPI_FUNCTION_ENTRY();

	for (i = 0; i < ACPI_NAME_SIZE; i++) {
		if (!acpi_ut_valid_acpi_char
		    ((ACPI_CAST_PTR(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
Commit	Line	Data
42f8fb75 BM	1	/*******************************************************************************
	2	*
	3	* Module Name: utstring - Common functions for strings and characters
	4	*
	5	******************************************************************************/
	6
	7	/*
25f044e6	8	* Copyright (C) 2000 - 2013, Intel Corp.
42f8fb75 BM	9	* All rights reserved.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions, and the following disclaimer,
	16	* without modification.
	17	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	18	* substantially similar to the "NO WARRANTY" disclaimer below
	19	* ("Disclaimer") and any redistribution must be conditioned upon
	20	* including a substantially similar Disclaimer requirement for further
	21	* binary redistribution.
	22	* 3. Neither the names of the above-listed copyright holders nor the names
	23	* of any contributors may be used to endorse or promote products derived
	24	* from this software without specific prior written permission.
	25	*
	26	* Alternatively, this software may be distributed under the terms of the
	27	* GNU General Public License ("GPL") version 2 as published by the Free
	28	* Software Foundation.
	29	*
	30	* NO WARRANTY
	31	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	32	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	33	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	34	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	35	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	36	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	37	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	38	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	39	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	40	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	41	* POSSIBILITY OF SUCH DAMAGES.
	42	*/
	43
	44	#include <acpi/acpi.h>
	45	#include "accommon.h"
	46	#include "acnamesp.h"
	47
	48	#define _COMPONENT ACPI_UTILITIES
	49	ACPI_MODULE_NAME("utstring")
	50
	51	/*
	52	* Non-ANSI C library functions - strlwr, strupr, stricmp, and a 64-bit
	53	* version of strtoul.
	54	*/
	55	#ifdef ACPI_ASL_COMPILER
	56	/*******************************************************************************
	57	*
	58	* FUNCTION: acpi_ut_strlwr (strlwr)
	59	*
	60	* PARAMETERS: src_string - The source string to convert
	61	*
	62	* RETURN: None
	63	*
	64	* DESCRIPTION: Convert string to lowercase
	65	*
	66	* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
	67	*
	68	******************************************************************************/
	69	void acpi_ut_strlwr(char *src_string)
	70	{
	71	char *string;
	72
73	ACPI_FUNCTION_ENTRY();
74
75	if (!src_string) {
76	return;
77	}
78
79	/* Walk entire string, lowercasing the letters */
80
81	for (string = src_string; *string; string++) {
82	string = (char)ACPI_TOLOWER(string);
83	}
84
85	return;
86	}
87
88	/******************************************************************************
89	*
90	* FUNCTION: acpi_ut_stricmp (stricmp)
91	*
92	* PARAMETERS: string1 - first string to compare
93	* string2 - second string to compare
94	*
95	* RETURN: int that signifies string relationship. Zero means strings
96	* are equal.
97	*
98	* DESCRIPTION: Implementation of the non-ANSI stricmp function (compare
99	* strings with no case sensitivity)
100	*
101	******************************************************************************/
102
103	int acpi_ut_stricmp(char string1, char string2)
104	{
105	int c1;
106	int c2;
107
108	do {
109	c1 = tolower((int)*string1);
110	c2 = tolower((int)*string2);
111
112	string1++;
113	string2++;
114	}
115	while ((c1 == c2) && (c1));
116
117	return (c1 - c2);
118	}
119	#endif
120
121	/*******************************************************************************
122	*
123	* FUNCTION: acpi_ut_strupr (strupr)
124	*
125	* PARAMETERS: src_string - The source string to convert
126	*
127	* RETURN: None
128	*
129	* DESCRIPTION: Convert string to uppercase
130	*
131	* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
132	*
133	******************************************************************************/
134
135	void acpi_ut_strupr(char *src_string)
136	{
137	char *string;
138
139	ACPI_FUNCTION_ENTRY();
140
141	if (!src_string) {
142	return;
143	}
144
145	/* Walk entire string, uppercasing the letters */
146
147	for (string = src_string; *string; string++) {
148	string = (char)ACPI_TOUPPER(string);
149	}
150
151	return;
152	}
153
154	/*******************************************************************************
155	*
156	* FUNCTION: acpi_ut_strtoul64
157	*
158	* PARAMETERS: string - Null terminated string
159	* base - Radix of the string: 16 or ACPI_ANY_BASE;
160	* ACPI_ANY_BASE means 'in behalf of to_integer'
161	* ret_integer - Where the converted integer is returned
162	*
163	* RETURN: Status and Converted value
164	*
165	* DESCRIPTION: Convert a string into an unsigned value. Performs either a
166	* 32-bit or 64-bit conversion, depending on the current mode
167	* of the interpreter.
168	* NOTE: Does not support Octal strings, not needed.
169	*
170	******************************************************************************/
171
172	acpi_status acpi_ut_strtoul64(char string, u32 base, u64 ret_integer)
173	{
174	u32 this_digit = 0;
175	u64 return_value = 0;
176	u64 quotient;
177	u64 dividend;
178	u32 to_integer_op = (base == ACPI_ANY_BASE);
179	u32 mode32 = (acpi_gbl_integer_byte_width == 4);
180	u8 valid_digits = 0;
181	u8 sign_of0x = 0;
182	u8 term = 0;
183
184	ACPI_FUNCTION_TRACE_STR(ut_stroul64, string);
185
186	switch (base) {
187	case ACPI_ANY_BASE:
188	case 16:
189	break;
190
191	default:
192	/* Invalid Base */
193	return_ACPI_STATUS(AE_BAD_PARAMETER);
194	}
195
196	if (!string) {
197	goto error_exit;
198	}
199
200	/* Skip over any white space in the buffer */
201
202	while ((string) && (ACPI_IS_SPACE(string) \|\| *string == '\t')) {
203	string++;
204	}
205
206	if (to_integer_op) {
207	/*
208	* Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
209	* We need to determine if it is decimal or hexadecimal.
210	*/
211	if ((string == '0') && (ACPI_TOLOWER((string + 1)) == 'x')) {
212	sign_of0x = 1;
213	base = 16;
214
215	/* Skip over the leading '0x' */
216	string += 2;
217	} else {
218	base = 10;
219	}
220	}
221
222	/* Any string left? Check that '0x' is not followed by white space. */
223
224	if (!(string) \|\| ACPI_IS_SPACE(string) \|\| *string == '\t') {
225	if (to_integer_op) {
226	goto error_exit;
227	} else {
228	goto all_done;
229	}
230	}
231
232	/*
233	* Perform a 32-bit or 64-bit conversion, depending upon the current
234	* execution mode of the interpreter
235	*/
236	dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
237
238	/* Main loop: convert the string to a 32- or 64-bit integer */
239
240	while (*string) {
241	if (ACPI_IS_DIGIT(*string)) {
242
243	/* Convert ASCII 0-9 to Decimal value */
244
245	this_digit = ((u8)*string) - '0';
246	} else if (base == 10) {
247
248	/* Digit is out of range; possible in to_integer case only */
249
250	term = 1;
251	} else {
252	this_digit = (u8)ACPI_TOUPPER(*string);
253	if (ACPI_IS_XDIGIT((char)this_digit)) {
254
255	/* Convert ASCII Hex char to value */
256
257	this_digit = this_digit - 'A' + 10;
258	} else {
259	term = 1;
260	}
261	}
262
263	if (term) {
264	if (to_integer_op) {
265	goto error_exit;
266	} else {
267	break;
268	}
269	} else if ((valid_digits == 0) && (this_digit == 0)
270	&& !sign_of0x) {
271
272	/* Skip zeros */
273	string++;
274	continue;
275	}
276
277	valid_digits++;
278
279	if (sign_of0x
280	&& ((valid_digits > 16)
281	\|\| ((valid_digits > 8) && mode32))) {
282	/*
283	* This is to_integer operation case.
284	* No any restrictions for string-to-integer conversion,
285	* see ACPI spec.
286	*/
287	goto error_exit;
288	}
289
290	/* Divide the digit into the correct position */
291
292	(void)acpi_ut_short_divide((dividend - (u64)this_digit),
293	base, &quotient, NULL);
294
295	if (return_value > quotient) {
296	if (to_integer_op) {
297	goto error_exit;
298	} else {
299	break;
300	}
301	}
302
303	return_value *= base;
304	return_value += this_digit;
305	string++;
306	}
307
308	/* All done, normal exit */
309
310	all_done:
311
312	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
313	ACPI_FORMAT_UINT64(return_value)));
314
315	*ret_integer = return_value;
316	return_ACPI_STATUS(AE_OK);
317
318	error_exit:
319	/* Base was set/validated above */
320
321	if (base == 10) {
322	return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT);
323	} else {
324	return_ACPI_STATUS(AE_BAD_HEX_CONSTANT);
325	}
326	}
327
328	/*******************************************************************************
329	*
330	* FUNCTION: acpi_ut_print_string
331	*
332	* PARAMETERS: string - Null terminated ASCII string
333	* max_length - Maximum output length
334	*
335	* RETURN: None
336	*
337	* DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
338	* sequences.
339	*
340	******************************************************************************/
341
342	void acpi_ut_print_string(char *string, u8 max_length)
343	{
344	u32 i;
345
346	if (!string) {
347	acpi_os_printf("<\"NULL STRING PTR\">");
348	return;
349	}
350
351	acpi_os_printf("\"");
5e43bc68	352	for (i = 0; (i < max_length) && string[i]; i++) {
42f8fb75 BM	353
	354	/* Escape sequences */
	355
	356	switch (string[i]) {
	357	case 0x07:
	358	acpi_os_printf("\\a"); /* BELL */
	359	break;
	360
	361	case 0x08:
	362	acpi_os_printf("\\b"); /* BACKSPACE */
	363	break;
	364
	365	case 0x0C:
	366	acpi_os_printf("\\f"); /* FORMFEED */
	367	break;
	368
	369	case 0x0A:
	370	acpi_os_printf("\\n"); /* LINEFEED */
	371	break;
	372
	373	case 0x0D:
	374	acpi_os_printf("\\r"); /* CARRIAGE RETURN */
	375	break;
	376
	377	case 0x09:
	378	acpi_os_printf("\\t"); /* HORIZONTAL TAB */
	379	break;
	380
	381	case 0x0B:
	382	acpi_os_printf("\\v"); /* VERTICAL TAB */
	383	break;
	384
	385	case '\'': /* Single Quote */
	386	case '\"': /* Double Quote */
	387	case '\\': /* Backslash */
	388	acpi_os_printf("\\%c", (int)string[i]);
	389	break;
	390
	391	default:
	392
	393	/* Check for printable character or hex escape */
	394
	395	if (ACPI_IS_PRINT(string[i])) {
	396	/* This is a normal character */
	397
	398	acpi_os_printf("%c", (int)string[i]);
	399	} else {
	400	/* All others will be Hex escapes */
	401
	402	acpi_os_printf("\\x%2.2X", (s32) string[i]);
	403	}
	404	break;
	405	}
	406	}
	407	acpi_os_printf("\"");
	408
	409	if (i == max_length && string[i]) {
	410	acpi_os_printf("...");
	411	}
	412	}
	413
	414	/*******************************************************************************
	415	*
	416	* FUNCTION: acpi_ut_valid_acpi_char
417	*
418	* PARAMETERS: char - The character to be examined
419	* position - Byte position (0-3)
420	*
421	* RETURN: TRUE if the character is valid, FALSE otherwise
422	*
423	* DESCRIPTION: Check for a valid ACPI character. Must be one of:
424	* 1) Upper case alpha
425	* 2) numeric
426	* 3) underscore
427	*
428	* We allow a '!' as the last character because of the ASF! table
429	*
430	******************************************************************************/
431
432	u8 acpi_ut_valid_acpi_char(char character, u32 position)
433	{
434
435	if (!((character >= 'A' && character <= 'Z') \|\|
436	(character >= '0' && character <= '9') \|\| (character == '_'))) {
437
438	/* Allow a '!' in the last position */
439
440	if (character == '!' && position == 3) {
441	return (TRUE);
442	}
443
444	return (FALSE);
445	}
446
447	return (TRUE);
448	}
449
450	/*******************************************************************************
451	*
452	* FUNCTION: acpi_ut_valid_acpi_name
453	*
454	* PARAMETERS: name - The name to be examined
455	*
456	* RETURN: TRUE if the name is valid, FALSE otherwise
457	*
458	* DESCRIPTION: Check for a valid ACPI name. Each character must be one of:
459	* 1) Upper case alpha
460	* 2) numeric
461	* 3) underscore
462	*
463	******************************************************************************/
464
465	u8 acpi_ut_valid_acpi_name(u32 name)
466	{
467	u32 i;
468
469	ACPI_FUNCTION_ENTRY();
470
471	for (i = 0; i < ACPI_NAME_SIZE; i++) {
472	if (!acpi_ut_valid_acpi_char
473	((ACPI_CAST_PTR(char, &name))[i], i)) {
474	return (FALSE);
475	}
476	}
477
478	return (TRUE);
479	}
480
481	/*******************************************************************************
482	*
483	* FUNCTION: acpi_ut_repair_name
484	*
485	* PARAMETERS: name - The ACPI name to be repaired
486	*
487	* RETURN: Repaired version of the name
488	*
489	* DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
490	* return the new name. NOTE: the Name parameter must reside in
491	* read/write memory, cannot be a const.
492	*
493	* An ACPI Name must consist of valid ACPI characters. We will repair the name
494	* if necessary because we don't want to abort because of this, but we want
495	* all namespace names to be printable. A warning message is appropriate.
496	*
497	* This issue came up because there are in fact machines that exhibit
498	* this problem, and we want to be able to enable ACPI support for them,
499	* even though there are a few bad names.
500	*
501	******************************************************************************/
502
503	void acpi_ut_repair_name(char *name)
504	{
505	u32 i;
506	u8 found_bad_char = FALSE;
507	u32 original_name;
508
509	ACPI_FUNCTION_NAME(ut_repair_name);
510
511	ACPI_MOVE_NAME(&original_name, name);
512
513	/* Check each character in the name */
514
515	for (i = 0; i < ACPI_NAME_SIZE; i++) {
516	if (acpi_ut_valid_acpi_char(name[i], i)) {
517	continue;
518	}
519
520	/*
521	* Replace a bad character with something printable, yet technically
522	* still invalid. This prevents any collisions with existing "good"
523	* names in the namespace.
524	*/
525	name[i] = '*';
526	found_bad_char = TRUE;
527	}
528
529	if (found_bad_char) {
530
531	/* Report warning only if in strict mode or debug mode */
532
533	if (!acpi_gbl_enable_interpreter_slack) {
534	ACPI_WARNING((AE_INFO,
535	"Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
536	original_name, name));
537	} else {
538	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
539	"Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
540	original_name, name));
541	}
542	}
543	}
544
545	#if defined ACPI_ASL_COMPILER \|\| defined ACPI_EXEC_APP
546	/*******************************************************************************
547	*
548	* FUNCTION: ut_convert_backslashes
549	*
550	* PARAMETERS: pathname - File pathname string to be converted
551	*
552	* RETURN: Modifies the input Pathname
553	*
554	* DESCRIPTION: Convert all backslashes (0x5C) to forward slashes (0x2F) within
555	* the entire input file pathname string.
556	*
557	******************************************************************************/
558
559	void ut_convert_backslashes(char *pathname)
560	{
561
562	if (!pathname) {
563	return;
564	}
565
566	while (*pathname) {
567	if (*pathname == '\\') {
568	*pathname = '/';
569	}
570
571	pathname++;
572	}
573	}
574	#endif