From: Duje Mihanović <duje.mihanovic@skole.hr>
Date: Sat, 30 Apr 2022 14:35:18 +0000 (+0200)
Subject: Fixes and improvements to FAT32 driver
X-Git-Tag: 0.1.0~10
X-Git-Url: http://git.dujemihanovic.xyz/posts?a=commitdiff_plain;h=2a70d72730b91905543e5d5e850bc00cf43bc5e6;hp=2a70d72730b91905543e5d5e850bc00cf43bc5e6;p=nameless-os.git

Fixes and improvements to FAT32 driver

* Fix issue where multiple clusters would be loaded 0x800 apart rather than
  contiguously.
* Get rid of some global variables, saving space.
* si points to the start LBA address rather than the partition table entry,
  saving a bit of space as we no longer need to use offsets.
* In read_cluster_chain, drop push/popad as they in fact do not
  save the upper 16 bytes of the registers. Instead, just push
  and pops the registers that are used.
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