UINT32
AcpiUtStrtoul (
const char *String,
char **Terminator,
UINT32 Base)
{
UINT32 converted = 0;
UINT32 index;
UINT32 sign;
const char *StringStart;
UINT32 ReturnValue = 0;
ACPI_STATUS Status = AE_OK;
/*
* Save the value of the pointer to the buffer's first
* character, save the current errno value, and then
* skip over any white space in the buffer:
*/
StringStart = String;
while (ACPI_IS_SPACE (*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 = NEGATIVE;
++String;
}
else if (*String == '+')
{
++String;
sign = POSITIVE;
}
else
{
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 (AcpiUtToLower (*(++String)) == 'x')
{
Base = 16;
++String;
}
else
{
Base = 8;
}
}
else
{
Base = 10;
}
}
else if (Base < 2 || Base > 36)
{
/*
* The specified Base parameter is not in the domain of
* this function:
*/
goto done;
}
/*
* 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' &&
AcpiUtToLower (*(++String)) == 'x')
{
String++;
}
/*
* Main loop: convert the string to an unsigned long:
*/
while (*String)
{
if (ACPI_IS_DIGIT (*String))
{
index = (UINT32) ((UINT8) *String - '0');
}
else
{
index = (UINT32) AcpiUtToUpper (*String);
if (ACPI_IS_UPPER (index))
{
index = index - 'A' + 10;
}
else
{
goto done;
}
}
if (index >= Base)
{
goto done;
}
/*
* Check to see if value is out of range:
*/
if (ReturnValue > ((ACPI_UINT32_MAX - (UINT32) index) /
(UINT32) Base))
{
Status = AE_ERROR;
ReturnValue = 0; /* reset */
}
else
{
ReturnValue *= Base;
ReturnValue += index;
converted = 1;
}
++String;
}
done:
/*
* If appropriate, update the caller's pointer to the next
* unconverted character in the buffer.
*/
if (Terminator)
{
if (converted == 0 && ReturnValue == 0 && String != NULL)
{
*Terminator = (char *) StringStart;
}
else
{
*Terminator = (char *) String;
}
}
if (Status == AE_ERROR)
{
ReturnValue = ACPI_UINT32_MAX;
}
/*
* If a minus sign was present, then "the conversion is negated":
*/
if (sign == NEGATIVE)
{
ReturnValue = (ACPI_UINT32_MAX - ReturnValue) + 1;
}
return (ReturnValue);
}
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);
}
}
acpi_status
acpi_ut_strtoul64 (
char *string,
u32 base,
acpi_integer *ret_integer)
{
u32 this_digit = 0;
acpi_integer return_value = 0;
acpi_integer quotient;
ACPI_FUNCTION_TRACE ("ut_stroul64");
if ((!string) || !(*string)) {
goto error_exit;
}
switch (base) {
case ACPI_ANY_BASE:
case 10:
case 16:
break;
default:
/* Invalid Base */
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Skip over any white space in the buffer */
while (ACPI_IS_SPACE (*string) || *string == '\t') {
string++;
}
/*
* If the input parameter Base is zero, then we need to
* determine if it is decimal or hexadecimal:
*/
if (base == 0) {
if ((*string == '0') &&
(ACPI_TOLOWER (*(string + 1)) == 'x')) {
base = 16;
string += 2;
}
else {
base = 10;
}
}
/*
* For hexadecimal base, skip over the leading
* 0 or 0x, if they are present.
*/
if ((base == 16) &&
(*string == '0') &&
(ACPI_TOLOWER (*(string + 1)) == 'x')) {
string += 2;
}
/* Any string left? */
if (!(*string)) {
goto error_exit;
}
/* Main loop: convert the string to a 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 */
goto error_exit;
}
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 {
/*
* We allow non-hex chars, just stop now, same as end-of-string.
* See ACPI spec, string-to-integer conversion.
*/
break;
}
}
/* Divide the digit into the correct position */
(void) acpi_ut_short_divide ((ACPI_INTEGER_MAX - (acpi_integer) this_digit),
base, "ient, NULL);
if (return_value > quotient) {
goto error_exit;
}
return_value *= base;
return_value += this_digit;
string++;
}
/* All done, normal exit */
*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);
}
}
ACPI_STATUS
AcpiUtStrtoul64 (
char *String,
UINT32 Base,
UINT64 *RetInteger)
{
UINT32 ThisDigit = 0;
UINT64 ReturnValue = 0;
UINT64 Quotient;
UINT64 Dividend;
UINT32 ToIntegerOp = (Base == ACPI_ANY_BASE);
UINT32 Mode32 = (AcpiGbl_IntegerByteWidth == 4);
UINT8 ValidDigits = 0;
UINT8 SignOf0x = 0;
UINT8 Term = 0;
ACPI_FUNCTION_TRACE_STR (UtStroul64, String);
switch (Base)
{
case ACPI_ANY_BASE:
case 16:
break;
default:
/* Invalid Base */
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
if (!String)
{
goto ErrorExit;
}
/* Skip over any white space in the buffer */
while ((*String) && (ACPI_IS_SPACE (*String) || *String == '\t'))
{
String++;
}
if (ToIntegerOp)
{
/*
* 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'))
{
SignOf0x = 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 (ToIntegerOp)
{
goto ErrorExit;
}
else
{
goto AllDone;
}
}
/*
* 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 */
ThisDigit = ((UINT8) *String) - '0';
}
else if (Base == 10)
{
/* Digit is out of range; possible in ToInteger case only */
Term = 1;
}
else
{
ThisDigit = (UINT8) ACPI_TOUPPER (*String);
if (ACPI_IS_XDIGIT ((char) ThisDigit))
{
/* Convert ASCII Hex char to value */
ThisDigit = ThisDigit - 'A' + 10;
}
else
{
Term = 1;
}
}
if (Term)
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
break;
}
}
else if ((ValidDigits == 0) && (ThisDigit == 0) && !SignOf0x)
{
/* Skip zeros */
String++;
continue;
}
ValidDigits++;
if (SignOf0x && ((ValidDigits > 16) || ((ValidDigits > 8) && Mode32)))
{
/*
* This is ToInteger operation case.
* No any restrictions for string-to-integer conversion,
* see ACPI spec.
*/
goto ErrorExit;
}
/* Divide the digit into the correct position */
(void) AcpiUtShortDivide ((Dividend - (UINT64) ThisDigit),
Base, &Quotient, NULL);
if (ReturnValue > Quotient)
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
break;
}
}
ReturnValue *= Base;
ReturnValue += ThisDigit;
String++;
}
/* All done, normal exit */
AllDone:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
ACPI_FORMAT_UINT64 (ReturnValue)));
*RetInteger = ReturnValue;
return_ACPI_STATUS (AE_OK);
ErrorExit:
/* Base was set/validated above */
if (Base == 10)
{
return_ACPI_STATUS (AE_BAD_DECIMAL_CONSTANT);
}
else
{
return_ACPI_STATUS (AE_BAD_HEX_CONSTANT);
}
}
ACPI_STATUS
AcpiUtStrtoul64 (
char *String,
UINT32 Base,
ACPI_INTEGER *RetInteger)
{
UINT32 Index;
ACPI_INTEGER ReturnValue = 0;
ACPI_STATUS Status = AE_OK;
ACPI_INTEGER Dividend;
ACPI_INTEGER Quotient;
*RetInteger = 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 (ACPI_IS_SPACE (*String) || *String == '\t')
{
++String;
}
/*
* 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 (ACPI_TOLOWER (*(++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' &&
ACPI_TOLOWER (*(++String)) == 'x')
{
String++;
}
/* Main loop: convert the string to an unsigned long */
while (*String)
{
if (ACPI_IS_DIGIT (*String))
{
Index = ((UINT8) *String) - '0';
}
else
{
Index = (UINT8) ACPI_TOUPPER (*String);
if (ACPI_IS_UPPER ((char) Index))
{
Index = Index - 'A' + 10;
}
else
{
goto ErrorExit;
}
}
if (Index >= Base)
{
goto ErrorExit;
}
/* Check to see if value is out of range: */
Dividend = ACPI_INTEGER_MAX - (ACPI_INTEGER) Index;
(void) AcpiUtShortDivide (&Dividend, Base, &Quotient, NULL);
if (ReturnValue > Quotient)
{
goto ErrorExit;
}
ReturnValue *= Base;
ReturnValue += Index;
++String;
}
*RetInteger = ReturnValue;
return (Status);
ErrorExit:
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);
}
