[LinuxBIOS] selection of compression algorithm
Ronald G Minnich
rminnich at lanl.gov
Thu May 25 23:16:17 CEST 2006
Carl-Daniel Hailfinger wrote:
> yhlu wrote:
>>just let the the uncompress take more parameter for the properties
>>buf, and every cpu find the correct buffer in RAM in BSP should be
>>OK...because the RAM on first node is ready at that time.
> How about
> int uncompress_generic(void *src, void *dst, void *buf, int bufsize);
> and uncompress_generic can assume that buf can be treated like RAM.
> If bufsize is too small, it can return an error. An additional function
> int needed_bufsize(void *src);
> could be written to compute the minimum buffer size for a given
> compressed image.
> What do you think?
int needed_bufsize(void *src);
good. And in most cases it is:
size = *(unsigned long *)src;
int uncompress_generic(void *src, void *dst, void *buf)
if the programmer is too stupid to call needed_bufsize, they're probably
too stupid to pass in a correct bufsize to this function, I think it is
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