The total size of umd0: is in blocks.

Therefore sceIoLseek(umd0:, 0, 2) should return the number of blocks, not
the number of bytes, in the iso.

Looks like this may help Zero no Kiseki.
Merge pull request #5081 from unknownbrackets/io-minor

The total size of umd0: is in blocks
softgpu: rotate uvs in throughmode.
softgpu: detect a vram-relative display addr.
Merge pull request #5083 from unknownbrackets/softgpu

Rotate UVs and fix crash in softgpu
Jump to function on pressing return in the function list
Merge pull request #5084 from Kingcom/Debugger

Jump to function on pressing return in the function list
Fix a few minor typos.