int
AcpiUtToLower (
int c)
{
return (ACPI_IS_UPPER(c) ? ((c)+0x20) : (c));
}
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);
}
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,
acpi_integer *ret_integer)
{
u32 this_digit;
acpi_integer return_value = 0;
acpi_integer quotient;
ACPI_FUNCTION_TRACE ("ut_stroul64");
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)) == 'x')) {
base = 16;
++string;
}
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)) == 'x') {
string++;
}
/* 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 {
this_digit = (u8) ACPI_TOUPPER (*string);
if (ACPI_IS_UPPER ((char) this_digit)) {
/* Convert ASCII Hex char to value */
this_digit = this_digit - 'A' + 10;
}
else {
goto error_exit;
}
}
/* Check to see if digit is out of range */
if (this_digit >= base) {
goto error_exit;
}
/* 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;
}
*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);
}
}
