Re: [PATCH v2 1/6] BaseTools/CommonLib: avoid using 'native' word size in IP address handling

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 30/11/18 23:45, Ard Biesheuvel wrote:
> In the context of the BaseTools, there is no such thing as a native word
> size, given that the same set of tools may be used to build a firmware
> image consisting of both 32-bit and 64-bit modules.
> 
> So update StrToIpv4Address() and StrToIpv6Address() to use UINT64
> types instead of UINTN types when parsing strings.
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  BaseTools/Source/C/Common/CommonLib.c | 28 ++++++++++----------
>  1 file changed, 14 insertions(+), 14 deletions(-)
> 
> diff --git a/BaseTools/Source/C/Common/CommonLib.c b/BaseTools/Source/C/Common/CommonLib.c
> index 618aadac781a..7c559bc3c222 100644
> --- a/BaseTools/Source/C/Common/CommonLib.c
> +++ b/BaseTools/Source/C/Common/CommonLib.c
> @@ -1785,7 +1785,7 @@ StrToIpv4Address (
>  {
>    RETURN_STATUS          Status;
>    UINTN                  AddressIndex;
> -  UINTN                  Uintn;
> +  UINT64                 Uint64;
>    EFI_IPv4_ADDRESS       LocalAddress;
>    UINT8                  LocalPrefixLength;
>    CHAR16                 *Pointer;
> @@ -1812,7 +1812,7 @@ StrToIpv4Address (
>      //
>      // Get D or P.
>      //
> -    Status = StrDecimalToUintnS ((CONST CHAR16 *) Pointer, &Pointer, &Uintn);
> +    Status = StrDecimalToUint64S ((CONST CHAR16 *) Pointer, &Pointer, &Uint64);
>      if (RETURN_ERROR (Status)) {
>        return RETURN_UNSUPPORTED;
>      }
> @@ -1820,18 +1820,18 @@ StrToIpv4Address (
>        //
>        // It's P.
>        //
> -      if (Uintn > 32) {
> +      if (Uint64 > 32) {
>          return RETURN_UNSUPPORTED;
>        }
> -      LocalPrefixLength = (UINT8) Uintn;
> +      LocalPrefixLength = (UINT8) Uint64;
>      } else {
>        //
>        // It's D.
>        //
> -      if (Uintn > MAX_UINT8) {
> +      if (Uint64 > MAX_UINT8) {
>          return RETURN_UNSUPPORTED;
>        }
> -      LocalAddress.Addr[AddressIndex] = (UINT8) Uintn;
> +      LocalAddress.Addr[AddressIndex] = (UINT8) Uint64;
>        AddressIndex++;
>      }
>  
> @@ -1888,7 +1888,7 @@ StrToIpv6Address (
>  {
>    RETURN_STATUS          Status;
>    UINTN                  AddressIndex;
> -  UINTN                  Uintn;
> +  UINT64                 Uint64;
>    EFI_IPv6_ADDRESS       LocalAddress;
>    UINT8                  LocalPrefixLength;
>    CONST CHAR16           *Pointer;
> @@ -1969,7 +1969,7 @@ StrToIpv6Address (
>          //
>          // Get X.
>          //
> -        Status = StrHexToUintnS (Pointer, &End, &Uintn);
> +        Status = StrHexToUint64S (Pointer, &End, &Uint64);
>          if (RETURN_ERROR (Status) || End - Pointer > 4) {
>            //
>            // Number of hexadecimal digit characters is no more than 4.
> @@ -1978,24 +1978,24 @@ StrToIpv6Address (
>          }
>          Pointer = End;
>          //
> -        // Uintn won't exceed MAX_UINT16 if number of hexadecimal digit characters is no more than 4.
> +        // Uint64 won't exceed MAX_UINT16 if number of hexadecimal digit characters is no more than 4.
>          //
>          ASSERT (AddressIndex + 1 < ARRAY_SIZE (Address->Addr));
> -        LocalAddress.Addr[AddressIndex] = (UINT8) ((UINT16) Uintn >> 8);
> -        LocalAddress.Addr[AddressIndex + 1] = (UINT8) Uintn;
> +        LocalAddress.Addr[AddressIndex] = (UINT8) ((UINT16) Uint64 >> 8);
> +        LocalAddress.Addr[AddressIndex + 1] = (UINT8) Uint64;
>          AddressIndex += 2;
>        } else {
>          //
>          // Get P, then exit the loop.
>          //
> -        Status = StrDecimalToUintnS (Pointer, &End, &Uintn);
> -        if (RETURN_ERROR (Status) || End == Pointer || Uintn > 128) {
> +        Status = StrDecimalToUint64S (Pointer, &End, &Uint64);
> +        if (RETURN_ERROR (Status) || End == Pointer || Uint64 > 128) {
>            //
>            // Prefix length should not exceed 128.
>            //
>            return RETURN_UNSUPPORTED;
>          }
> -        LocalPrefixLength = (UINT8) Uintn;
> +        LocalPrefixLength = (UINT8) Uint64;
>          Pointer = End;
>          break;
>        }
>