/**
INTN -> UINT32 conversion
Converts the value specified by Operand to a value specified by Result type
and stores the converted value into the caller allocated output buffer
specified by Result. The caller must pass in a Result buffer that is at
least as large as the Result type.
If Result is NULL, RETURN_INVALID_PARAMETER is returned.
If the conversion results in an overflow or an underflow condition, then
Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.
@param[in] Operand Operand to be converted to new type
@param[out] Result Pointer to the result of conversion
@retval RETURN_SUCCESS Successful conversion
@retval RETURN_BUFFER_TOO_SMALL Overflow
@retval RETURN_INVALID_PARAMETER Result is NULL
**/
RETURN_STATUS
EFIAPI
SafeIntnToUint32 (
IN INTN Operand,
OUT UINT32 *Result
)
{
RETURN_STATUS Status;
if (Result == NULL) {
return RETURN_INVALID_PARAMETER;
}
if (sizeof (UINTN) == sizeof (UINT32)) {
if (Operand >= 0) {
*Result = (UINT32)Operand;
Status = RETURN_SUCCESS;
} else {
*Result = UINT32_ERROR;
Status = RETURN_BUFFER_TOO_SMALL;
}
return Status;
}
return SafeInt64ToUint32 ((INT64)Operand, Result);
}
/**
INTN -> UINT32 conversion
Converts the value specified by Operand to a value specified by Result type
and stores the converted value into the caller allocated output buffer
specified by Result. The caller must pass in a Result buffer that is at
least as large as the Result type.
If Result is NULL, RETURN_INVALID_PARAMETER is returned.
If the conversion results in an overflow or an underflow condition, then
Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.
@param[in] Operand Operand to be converted to new type
@param[out] Result Pointer to the result of conversion
@retval RETURN_SUCCESS Successful conversion
@retval RETURN_BUFFER_TOO_SMALL Overflow
@retval RETURN_INVALID_PARAMETER Result is NULL
**/
RETURN_STATUS
EFIAPI
SafeIntnToUint32 (
IN INTN Operand,
OUT UINT32 *Result
)
{
return SafeInt64ToUint32 ((INT64)Operand, Result);
}
/**
INT64 -> UINTN conversion
Converts the value specified by Operand to a value specified by Result type
and stores the converted value into the caller allocated output buffer
specified by Result. The caller must pass in a Result buffer that is at
least as large as the Result type.
If Result is NULL, RETURN_INVALID_PARAMETER is returned.
If the conversion results in an overflow or an underflow condition, then
Result is set to UINTN_ERROR and RETURN_BUFFER_TOO_SMALL is returned.
@param[in] Operand Operand to be converted to new type
@param[out] Result Pointer to the result of conversion
@retval RETURN_SUCCESS Successful conversion
@retval RETURN_BUFFER_TOO_SMALL Overflow
@retval RETURN_INVALID_PARAMETER Result is NULL
**/
RETURN_STATUS
EFIAPI
SafeInt64ToUintn (
IN INT64 Operand,
OUT UINTN *Result
)
{
if (sizeof (UINTN) == sizeof (UINT32)) {
return SafeInt64ToUint32 (Operand, (UINT32 *)Result);
}
return SafeInt64ToUint64 (Operand, (UINT64 *)Result);
}
