Re: [Qemu-devel] [PATCH v6 02/11] Add uleb encoding/decoding functions

[Avi Kivity]

On 01/25/2012 01:26 PM, Orit Wasserman wrote:
> Implement Unsigned Little Endian Base 128.
>
>  
> +/* ULEB128 */
> +int uleb128_encode_small(uint8_t *out, uint32_t n);
> +int uleb128_decode_small(const uint8 *in, uint32_t *n);
> +
>  #endif
> diff --git a/savevm.c b/savevm.c
> index 80be1ff..304db31 100644
> --- a/savevm.c
> +++ b/savevm.c
> @@ -2297,3 +2297,29 @@ void vmstate_register_ram_global(MemoryRegion *mr)
>  {
>      vmstate_register_ram(mr, NULL);
>  }
> +
> +/* ULEB128 */
> +int uleb128_encode_small(uint8_t *out, uint32_t n)
> +{

assert(n <= 0x3fff);

> +    if (n < 0x80) {
> +        *out++ = n;
> +        return 1;
> +    } else {
> +        *out++ = (n & 0x7f) | 0x80;
> +        *out++ = n >> 7;

return 2?

> +    }
> +    return 0;
> +}
> +
> +int uleb128_decode_small(const uint8 *in, uint32_t *n)
> +{
> +    if (!(*in & 0x80)) {
> +        *n = *in++;
> +        return 1;
> +    } else {
> +        *n = *in++ & 0x7f;

assert(!(*in & 0x80));

> +        *n |= *in++ << 7;
> +        return 0;

return 2?

> +    }
> +}
> +


-- 
error compiling committee.c: too many arguments to function