Small Data

Small data available access range

Data Type	Range	#Elements	Size
char	[-256,255]	512	512 bytes
short	[-256,510]	383	766 bytes
int	[-256,1020]	319	1276 bytes

The lower limit depends on the possibility to access byte-aligned datum, hence, it is hard connected to the range of s9 short immediate (i.e., -256). Any other access can be done using address-scaling feature of the load/store instructions.

The number of elements which we can fit in sdata section highly depends on the data alignment properties. For example if we use only 4 byte datum, 1 byte aligned, we can fit up to 128 elements in the section.