utstrtoul64.c revision 1.1.1.1.2.2
1 1.1.1.1.2.2 skrll /******************************************************************************* 2 1.1.1.1.2.2 skrll * 3 1.1.1.1.2.2 skrll * Module Name: utstrtoul64 - string to 64-bit integer support 4 1.1.1.1.2.2 skrll * 5 1.1.1.1.2.2 skrll ******************************************************************************/ 6 1.1.1.1.2.2 skrll 7 1.1.1.1.2.2 skrll /* 8 1.1.1.1.2.2 skrll * Copyright (C) 2000 - 2016, Intel Corp. 9 1.1.1.1.2.2 skrll * All rights reserved. 10 1.1.1.1.2.2 skrll * 11 1.1.1.1.2.2 skrll * Redistribution and use in source and binary forms, with or without 12 1.1.1.1.2.2 skrll * modification, are permitted provided that the following conditions 13 1.1.1.1.2.2 skrll * are met: 14 1.1.1.1.2.2 skrll * 1. Redistributions of source code must retain the above copyright 15 1.1.1.1.2.2 skrll * notice, this list of conditions, and the following disclaimer, 16 1.1.1.1.2.2 skrll * without modification. 17 1.1.1.1.2.2 skrll * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.1.1.1.2.2 skrll * substantially similar to the "NO WARRANTY" disclaimer below 19 1.1.1.1.2.2 skrll * ("Disclaimer") and any redistribution must be conditioned upon 20 1.1.1.1.2.2 skrll * including a substantially similar Disclaimer requirement for further 21 1.1.1.1.2.2 skrll * binary redistribution. 22 1.1.1.1.2.2 skrll * 3. Neither the names of the above-listed copyright holders nor the names 23 1.1.1.1.2.2 skrll * of any contributors may be used to endorse or promote products derived 24 1.1.1.1.2.2 skrll * from this software without specific prior written permission. 25 1.1.1.1.2.2 skrll * 26 1.1.1.1.2.2 skrll * Alternatively, this software may be distributed under the terms of the 27 1.1.1.1.2.2 skrll * GNU General Public License ("GPL") version 2 as published by the Free 28 1.1.1.1.2.2 skrll * Software Foundation. 29 1.1.1.1.2.2 skrll * 30 1.1.1.1.2.2 skrll * NO WARRANTY 31 1.1.1.1.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.1.1.1.2.2 skrll * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.1.1.1.2.2 skrll * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.1.1.1.2.2 skrll * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.1.1.1.2.2 skrll * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1.1.1.2.2 skrll * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1.1.1.2.2 skrll * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1.1.1.2.2 skrll * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.1.1.1.2.2 skrll * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.1.1.1.2.2 skrll * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.1.1.1.2.2 skrll * POSSIBILITY OF SUCH DAMAGES. 42 1.1.1.1.2.2 skrll */ 43 1.1.1.1.2.2 skrll 44 1.1.1.1.2.2 skrll #include "acpi.h" 45 1.1.1.1.2.2 skrll #include "accommon.h" 46 1.1.1.1.2.2 skrll 47 1.1.1.1.2.2 skrll 48 1.1.1.1.2.2 skrll /******************************************************************************* 49 1.1.1.1.2.2 skrll * 50 1.1.1.1.2.2 skrll * The functions in this module satisfy the need for 64-bit string-to-integer 51 1.1.1.1.2.2 skrll * conversions on both 32-bit and 64-bit platforms. 52 1.1.1.1.2.2 skrll * 53 1.1.1.1.2.2 skrll ******************************************************************************/ 54 1.1.1.1.2.2 skrll 55 1.1.1.1.2.2 skrll #define _COMPONENT ACPI_UTILITIES 56 1.1.1.1.2.2 skrll ACPI_MODULE_NAME ("utstrtoul64") 57 1.1.1.1.2.2 skrll 58 1.1.1.1.2.2 skrll /* Local prototypes */ 59 1.1.1.1.2.2 skrll 60 1.1.1.1.2.2 skrll static UINT64 61 1.1.1.1.2.2 skrll AcpiUtStrtoulBase10 ( 62 1.1.1.1.2.2 skrll char *String, 63 1.1.1.1.2.2 skrll UINT32 Flags); 64 1.1.1.1.2.2 skrll 65 1.1.1.1.2.2 skrll static UINT64 66 1.1.1.1.2.2 skrll AcpiUtStrtoulBase16 ( 67 1.1.1.1.2.2 skrll char *String, 68 1.1.1.1.2.2 skrll UINT32 Flags); 69 1.1.1.1.2.2 skrll 70 1.1.1.1.2.2 skrll 71 1.1.1.1.2.2 skrll /******************************************************************************* 72 1.1.1.1.2.2 skrll * 73 1.1.1.1.2.2 skrll * String conversion rules as written in the ACPI specification. The error 74 1.1.1.1.2.2 skrll * conditions and behavior are different depending on the type of conversion. 75 1.1.1.1.2.2 skrll * 76 1.1.1.1.2.2 skrll * 77 1.1.1.1.2.2 skrll * Implicit data type conversion: string-to-integer 78 1.1.1.1.2.2 skrll * -------------------------------------------------- 79 1.1.1.1.2.2 skrll * 80 1.1.1.1.2.2 skrll * Base is always 16. This is the ACPI_STRTOUL_BASE16 case. 81 1.1.1.1.2.2 skrll * 82 1.1.1.1.2.2 skrll * Example: 83 1.1.1.1.2.2 skrll * Add ("BA98", Arg0, Local0) 84 1.1.1.1.2.2 skrll * 85 1.1.1.1.2.2 skrll * The integer is initialized to the value zero. 86 1.1.1.1.2.2 skrll * The ASCII string is interpreted as a hexadecimal constant. 87 1.1.1.1.2.2 skrll * 88 1.1.1.1.2.2 skrll * 1) A "0x" prefix is not allowed. However, ACPICA allows this for 89 1.1.1.1.2.2 skrll * compatibility with previous ACPICA. (NO ERROR) 90 1.1.1.1.2.2 skrll * 91 1.1.1.1.2.2 skrll * 2) Terminates when the size of an integer is reached (32 or 64 bits). 92 1.1.1.1.2.2 skrll * (NO ERROR) 93 1.1.1.1.2.2 skrll * 94 1.1.1.1.2.2 skrll * 3) The first non-hex character terminates the conversion without error. 95 1.1.1.1.2.2 skrll * (NO ERROR) 96 1.1.1.1.2.2 skrll * 97 1.1.1.1.2.2 skrll * 4) Conversion of a null (zero-length) string to an integer is not 98 1.1.1.1.2.2 skrll * allowed. However, ACPICA allows this for compatibility with previous 99 1.1.1.1.2.2 skrll * ACPICA. This conversion returns the value 0. (NO ERROR) 100 1.1.1.1.2.2 skrll * 101 1.1.1.1.2.2 skrll * 102 1.1.1.1.2.2 skrll * Explicit data type conversion: ToInteger() with string operand 103 1.1.1.1.2.2 skrll * --------------------------------------------------------------- 104 1.1.1.1.2.2 skrll * 105 1.1.1.1.2.2 skrll * Base is either 10 (default) or 16 (with 0x prefix) 106 1.1.1.1.2.2 skrll * 107 1.1.1.1.2.2 skrll * Examples: 108 1.1.1.1.2.2 skrll * ToInteger ("1000") 109 1.1.1.1.2.2 skrll * ToInteger ("0xABCD") 110 1.1.1.1.2.2 skrll * 111 1.1.1.1.2.2 skrll * 1) Can be (must be) either a decimal or hexadecimal numeric string. 112 1.1.1.1.2.2 skrll * A hex value must be prefixed by "0x" or it is interpreted as a decimal. 113 1.1.1.1.2.2 skrll * 114 1.1.1.1.2.2 skrll * 2) The value must not exceed the maximum of an integer value. ACPI spec 115 1.1.1.1.2.2 skrll * states the behavior is "unpredictable", so ACPICA matches the behavior 116 1.1.1.1.2.2 skrll * of the implicit conversion case.(NO ERROR) 117 1.1.1.1.2.2 skrll * 118 1.1.1.1.2.2 skrll * 3) Behavior on the first non-hex character is not specified by the ACPI 119 1.1.1.1.2.2 skrll * spec, so ACPICA matches the behavior of the implicit conversion case 120 1.1.1.1.2.2 skrll * and terminates. (NO ERROR) 121 1.1.1.1.2.2 skrll * 122 1.1.1.1.2.2 skrll * 4) A null (zero-length) string is illegal. 123 1.1.1.1.2.2 skrll * However, ACPICA allows this for compatibility with previous ACPICA. 124 1.1.1.1.2.2 skrll * This conversion returns the value 0. (NO ERROR) 125 1.1.1.1.2.2 skrll * 126 1.1.1.1.2.2 skrll ******************************************************************************/ 127 1.1.1.1.2.2 skrll 128 1.1.1.1.2.2 skrll 129 1.1.1.1.2.2 skrll /******************************************************************************* 130 1.1.1.1.2.2 skrll * 131 1.1.1.1.2.2 skrll * FUNCTION: AcpiUtStrtoul64 132 1.1.1.1.2.2 skrll * 133 1.1.1.1.2.2 skrll * PARAMETERS: String - Null terminated input string 134 1.1.1.1.2.2 skrll * Flags - Conversion info, see below 135 1.1.1.1.2.2 skrll * ReturnValue - Where the converted integer is 136 1.1.1.1.2.2 skrll * returned 137 1.1.1.1.2.2 skrll * 138 1.1.1.1.2.2 skrll * RETURN: Status and Converted value 139 1.1.1.1.2.2 skrll * 140 1.1.1.1.2.2 skrll * DESCRIPTION: Convert a string into an unsigned value. Performs either a 141 1.1.1.1.2.2 skrll * 32-bit or 64-bit conversion, depending on the input integer 142 1.1.1.1.2.2 skrll * size in Flags (often the current mode of the interpreter). 143 1.1.1.1.2.2 skrll * 144 1.1.1.1.2.2 skrll * Values for Flags: 145 1.1.1.1.2.2 skrll * ACPI_STRTOUL_32BIT - Max integer value is 32 bits 146 1.1.1.1.2.2 skrll * ACPI_STRTOUL_64BIT - Max integer value is 64 bits 147 1.1.1.1.2.2 skrll * ACPI_STRTOUL_BASE16 - Input string is hexadecimal. Default 148 1.1.1.1.2.2 skrll * is 10/16 based on string prefix (0x). 149 1.1.1.1.2.2 skrll * 150 1.1.1.1.2.2 skrll * NOTES: 151 1.1.1.1.2.2 skrll * Negative numbers are not supported, as they are not supported by ACPI. 152 1.1.1.1.2.2 skrll * 153 1.1.1.1.2.2 skrll * Supports only base 16 or base 10 strings/values. Does not 154 1.1.1.1.2.2 skrll * support Octal strings, as these are not supported by ACPI. 155 1.1.1.1.2.2 skrll * 156 1.1.1.1.2.2 skrll * Current users of this support: 157 1.1.1.1.2.2 skrll * 158 1.1.1.1.2.2 skrll * Interpreter - Implicit and explicit conversions, GPE method names 159 1.1.1.1.2.2 skrll * Debugger - Command line input string conversion 160 1.1.1.1.2.2 skrll * iASL - Main parser, conversion of constants to integers 161 1.1.1.1.2.2 skrll * iASL - Data Table Compiler parser (constant math expressions) 162 1.1.1.1.2.2 skrll * iASL - Preprocessor (constant math expressions) 163 1.1.1.1.2.2 skrll * AcpiDump - Input table addresses 164 1.1.1.1.2.2 skrll * AcpiExec - Testing of the AcpiUtStrtoul64 function 165 1.1.1.1.2.2 skrll * 166 1.1.1.1.2.2 skrll * Note concerning callers: 167 1.1.1.1.2.2 skrll * AcpiGbl_IntegerByteWidth can be used to set the 32/64 limit. If used, 168 1.1.1.1.2.2 skrll * this global should be set to the proper width. For the core ACPICA code, 169 1.1.1.1.2.2 skrll * this width depends on the DSDT version. For iASL, the default byte 170 1.1.1.1.2.2 skrll * width is always 8 for the parser, but error checking is performed later 171 1.1.1.1.2.2 skrll * to flag cases where a 64-bit constant is defined in a 32-bit DSDT/SSDT. 172 1.1.1.1.2.2 skrll * 173 1.1.1.1.2.2 skrll ******************************************************************************/ 174 1.1.1.1.2.2 skrll 175 1.1.1.1.2.2 skrll ACPI_STATUS 176 1.1.1.1.2.2 skrll AcpiUtStrtoul64 ( 177 1.1.1.1.2.2 skrll char *String, 178 1.1.1.1.2.2 skrll UINT32 Flags, 179 1.1.1.1.2.2 skrll UINT64 *ReturnValue) 180 1.1.1.1.2.2 skrll { 181 1.1.1.1.2.2 skrll ACPI_STATUS Status = AE_OK; 182 1.1.1.1.2.2 skrll UINT32 Base; 183 1.1.1.1.2.2 skrll 184 1.1.1.1.2.2 skrll 185 1.1.1.1.2.2 skrll ACPI_FUNCTION_TRACE_STR (UtStrtoul64, String); 186 1.1.1.1.2.2 skrll 187 1.1.1.1.2.2 skrll 188 1.1.1.1.2.2 skrll /* Parameter validation */ 189 1.1.1.1.2.2 skrll 190 1.1.1.1.2.2 skrll if (!String || !ReturnValue) 191 1.1.1.1.2.2 skrll { 192 1.1.1.1.2.2 skrll return_ACPI_STATUS (AE_BAD_PARAMETER); 193 1.1.1.1.2.2 skrll } 194 1.1.1.1.2.2 skrll 195 1.1.1.1.2.2 skrll *ReturnValue = 0; 196 1.1.1.1.2.2 skrll 197 1.1.1.1.2.2 skrll /* Check for zero-length string, returns 0 */ 198 1.1.1.1.2.2 skrll 199 1.1.1.1.2.2 skrll if (*String == 0) 200 1.1.1.1.2.2 skrll { 201 1.1.1.1.2.2 skrll return_ACPI_STATUS (AE_OK); 202 1.1.1.1.2.2 skrll } 203 1.1.1.1.2.2 skrll 204 1.1.1.1.2.2 skrll /* Skip over any white space at start of string */ 205 1.1.1.1.2.2 skrll 206 1.1.1.1.2.2 skrll while (isspace ((int) *String)) 207 1.1.1.1.2.2 skrll { 208 1.1.1.1.2.2 skrll String++; 209 1.1.1.1.2.2 skrll } 210 1.1.1.1.2.2 skrll 211 1.1.1.1.2.2 skrll /* End of string? return 0 */ 212 1.1.1.1.2.2 skrll 213 1.1.1.1.2.2 skrll if (*String == 0) 214 1.1.1.1.2.2 skrll { 215 1.1.1.1.2.2 skrll return_ACPI_STATUS (AE_OK); 216 1.1.1.1.2.2 skrll } 217 1.1.1.1.2.2 skrll 218 1.1.1.1.2.2 skrll /* 219 1.1.1.1.2.2 skrll * 1) The "0x" prefix indicates base 16. Per the ACPI specification, 220 1.1.1.1.2.2 skrll * the "0x" prefix is only allowed for implicit (non-strict) conversions. 221 1.1.1.1.2.2 skrll * However, we always allow it for compatibility with older ACPICA. 222 1.1.1.1.2.2 skrll */ 223 1.1.1.1.2.2 skrll if ((*String == ACPI_ASCII_ZERO) && 224 1.1.1.1.2.2 skrll (tolower ((int) *(String + 1)) == 'x')) 225 1.1.1.1.2.2 skrll { 226 1.1.1.1.2.2 skrll String += 2; /* Go past the 0x */ 227 1.1.1.1.2.2 skrll if (*String == 0) 228 1.1.1.1.2.2 skrll { 229 1.1.1.1.2.2 skrll return_ACPI_STATUS (AE_OK); /* Return value 0 */ 230 1.1.1.1.2.2 skrll } 231 1.1.1.1.2.2 skrll 232 1.1.1.1.2.2 skrll Base = 16; 233 1.1.1.1.2.2 skrll } 234 1.1.1.1.2.2 skrll 235 1.1.1.1.2.2 skrll /* 2) Force to base 16 (implicit conversion case) */ 236 1.1.1.1.2.2 skrll 237 1.1.1.1.2.2 skrll else if (Flags & ACPI_STRTOUL_BASE16) 238 1.1.1.1.2.2 skrll { 239 1.1.1.1.2.2 skrll Base = 16; 240 1.1.1.1.2.2 skrll } 241 1.1.1.1.2.2 skrll 242 1.1.1.1.2.2 skrll /* 3) Default fallback is to Base 10 */ 243 1.1.1.1.2.2 skrll 244 1.1.1.1.2.2 skrll else 245 1.1.1.1.2.2 skrll { 246 1.1.1.1.2.2 skrll Base = 10; 247 1.1.1.1.2.2 skrll } 248 1.1.1.1.2.2 skrll 249 1.1.1.1.2.2 skrll /* Skip all leading zeros */ 250 1.1.1.1.2.2 skrll 251 1.1.1.1.2.2 skrll while (*String == ACPI_ASCII_ZERO) 252 1.1.1.1.2.2 skrll { 253 1.1.1.1.2.2 skrll String++; 254 1.1.1.1.2.2 skrll if (*String == 0) 255 1.1.1.1.2.2 skrll { 256 1.1.1.1.2.2 skrll return_ACPI_STATUS (AE_OK); /* Return value 0 */ 257 1.1.1.1.2.2 skrll } 258 1.1.1.1.2.2 skrll } 259 1.1.1.1.2.2 skrll 260 1.1.1.1.2.2 skrll /* Perform the base 16 or 10 conversion */ 261 1.1.1.1.2.2 skrll 262 1.1.1.1.2.2 skrll if (Base == 16) 263 1.1.1.1.2.2 skrll { 264 1.1.1.1.2.2 skrll *ReturnValue = AcpiUtStrtoulBase16 (String, Flags); 265 1.1.1.1.2.2 skrll } 266 1.1.1.1.2.2 skrll else 267 1.1.1.1.2.2 skrll { 268 1.1.1.1.2.2 skrll *ReturnValue = AcpiUtStrtoulBase10 (String, Flags); 269 1.1.1.1.2.2 skrll } 270 1.1.1.1.2.2 skrll 271 1.1.1.1.2.2 skrll return_ACPI_STATUS (Status); 272 1.1.1.1.2.2 skrll } 273 1.1.1.1.2.2 skrll 274 1.1.1.1.2.2 skrll 275 1.1.1.1.2.2 skrll /******************************************************************************* 276 1.1.1.1.2.2 skrll * 277 1.1.1.1.2.2 skrll * FUNCTION: AcpiUtStrtoulBase10 278 1.1.1.1.2.2 skrll * 279 1.1.1.1.2.2 skrll * PARAMETERS: String - Null terminated input string 280 1.1.1.1.2.2 skrll * Flags - Conversion info 281 1.1.1.1.2.2 skrll * 282 1.1.1.1.2.2 skrll * RETURN: 64-bit converted integer 283 1.1.1.1.2.2 skrll * 284 1.1.1.1.2.2 skrll * DESCRIPTION: Performs a base 10 conversion of the input string to an 285 1.1.1.1.2.2 skrll * integer value, either 32 or 64 bits. 286 1.1.1.1.2.2 skrll * Note: String must be valid and non-null. 287 1.1.1.1.2.2 skrll * 288 1.1.1.1.2.2 skrll ******************************************************************************/ 289 1.1.1.1.2.2 skrll 290 1.1.1.1.2.2 skrll static UINT64 291 1.1.1.1.2.2 skrll AcpiUtStrtoulBase10 ( 292 1.1.1.1.2.2 skrll char *String, 293 1.1.1.1.2.2 skrll UINT32 Flags) 294 1.1.1.1.2.2 skrll { 295 1.1.1.1.2.2 skrll int AsciiDigit; 296 1.1.1.1.2.2 skrll UINT64 NextValue; 297 1.1.1.1.2.2 skrll UINT64 ReturnValue = 0; 298 1.1.1.1.2.2 skrll 299 1.1.1.1.2.2 skrll 300 1.1.1.1.2.2 skrll /* Main loop: convert each ASCII byte in the input string */ 301 1.1.1.1.2.2 skrll 302 1.1.1.1.2.2 skrll while (*String) 303 1.1.1.1.2.2 skrll { 304 1.1.1.1.2.2 skrll AsciiDigit = *String; 305 1.1.1.1.2.2 skrll if (!isdigit (AsciiDigit)) 306 1.1.1.1.2.2 skrll { 307 1.1.1.1.2.2 skrll /* Not ASCII 0-9, terminate */ 308 1.1.1.1.2.2 skrll 309 1.1.1.1.2.2 skrll goto Exit; 310 1.1.1.1.2.2 skrll } 311 1.1.1.1.2.2 skrll 312 1.1.1.1.2.2 skrll /* Convert and insert (add) the decimal digit */ 313 1.1.1.1.2.2 skrll 314 1.1.1.1.2.2 skrll NextValue = 315 1.1.1.1.2.2 skrll (ReturnValue * 10) + (AsciiDigit - ACPI_ASCII_ZERO); 316 1.1.1.1.2.2 skrll 317 1.1.1.1.2.2 skrll /* Check for overflow (32 or 64 bit) - return current converted value */ 318 1.1.1.1.2.2 skrll 319 1.1.1.1.2.2 skrll if (((Flags & ACPI_STRTOUL_32BIT) && (NextValue > ACPI_UINT32_MAX)) || 320 1.1.1.1.2.2 skrll (NextValue < ReturnValue)) /* 64-bit overflow case */ 321 1.1.1.1.2.2 skrll { 322 1.1.1.1.2.2 skrll goto Exit; 323 1.1.1.1.2.2 skrll } 324 1.1.1.1.2.2 skrll 325 1.1.1.1.2.2 skrll ReturnValue = NextValue; 326 1.1.1.1.2.2 skrll String++; 327 1.1.1.1.2.2 skrll } 328 1.1.1.1.2.2 skrll 329 1.1.1.1.2.2 skrll Exit: 330 1.1.1.1.2.2 skrll return (ReturnValue); 331 1.1.1.1.2.2 skrll } 332 1.1.1.1.2.2 skrll 333 1.1.1.1.2.2 skrll 334 1.1.1.1.2.2 skrll /******************************************************************************* 335 1.1.1.1.2.2 skrll * 336 1.1.1.1.2.2 skrll * FUNCTION: AcpiUtStrtoulBase16 337 1.1.1.1.2.2 skrll * 338 1.1.1.1.2.2 skrll * PARAMETERS: String - Null terminated input string 339 1.1.1.1.2.2 skrll * Flags - conversion info 340 1.1.1.1.2.2 skrll * 341 1.1.1.1.2.2 skrll * RETURN: 64-bit converted integer 342 1.1.1.1.2.2 skrll * 343 1.1.1.1.2.2 skrll * DESCRIPTION: Performs a base 16 conversion of the input string to an 344 1.1.1.1.2.2 skrll * integer value, either 32 or 64 bits. 345 1.1.1.1.2.2 skrll * Note: String must be valid and non-null. 346 1.1.1.1.2.2 skrll * 347 1.1.1.1.2.2 skrll ******************************************************************************/ 348 1.1.1.1.2.2 skrll 349 1.1.1.1.2.2 skrll static UINT64 350 1.1.1.1.2.2 skrll AcpiUtStrtoulBase16 ( 351 1.1.1.1.2.2 skrll char *String, 352 1.1.1.1.2.2 skrll UINT32 Flags) 353 1.1.1.1.2.2 skrll { 354 1.1.1.1.2.2 skrll int AsciiDigit; 355 1.1.1.1.2.2 skrll UINT32 ValidDigits = 1; 356 1.1.1.1.2.2 skrll UINT64 ReturnValue = 0; 357 1.1.1.1.2.2 skrll 358 1.1.1.1.2.2 skrll 359 1.1.1.1.2.2 skrll /* Main loop: convert each ASCII byte in the input string */ 360 1.1.1.1.2.2 skrll 361 1.1.1.1.2.2 skrll while (*String) 362 1.1.1.1.2.2 skrll { 363 1.1.1.1.2.2 skrll /* Check for overflow (32 or 64 bit) - return current converted value */ 364 1.1.1.1.2.2 skrll 365 1.1.1.1.2.2 skrll if ((ValidDigits > 16) || 366 1.1.1.1.2.2 skrll ((ValidDigits > 8) && (Flags & ACPI_STRTOUL_32BIT))) 367 1.1.1.1.2.2 skrll { 368 1.1.1.1.2.2 skrll goto Exit; 369 1.1.1.1.2.2 skrll } 370 1.1.1.1.2.2 skrll 371 1.1.1.1.2.2 skrll AsciiDigit = *String; 372 1.1.1.1.2.2 skrll if (!isxdigit (AsciiDigit)) 373 1.1.1.1.2.2 skrll { 374 1.1.1.1.2.2 skrll /* Not Hex ASCII A-F, a-f, or 0-9, terminate */ 375 1.1.1.1.2.2 skrll 376 1.1.1.1.2.2 skrll goto Exit; 377 1.1.1.1.2.2 skrll } 378 1.1.1.1.2.2 skrll 379 1.1.1.1.2.2 skrll /* Convert and insert the hex digit */ 380 1.1.1.1.2.2 skrll 381 1.1.1.1.2.2 skrll ReturnValue = 382 1.1.1.1.2.2 skrll (ReturnValue << 4) | AcpiUtAsciiCharToHex (AsciiDigit); 383 1.1.1.1.2.2 skrll 384 1.1.1.1.2.2 skrll String++; 385 1.1.1.1.2.2 skrll ValidDigits++; 386 1.1.1.1.2.2 skrll } 387 1.1.1.1.2.2 skrll 388 1.1.1.1.2.2 skrll Exit: 389 1.1.1.1.2.2 skrll return (ReturnValue); 390 1.1.1.1.2.2 skrll } 391
Indexes created Tue Oct 21 12:09:54 GMT 2025