Commit Graph

75 Commits

Author SHA1 Message Date
b7e2a8e886 use bx rel addressing for fat32_state in SearchFATDIR 2024-10-18 07:58:09 -04:00
94c2a1626d correct some field sizes 2024-10-18 07:57:42 -04:00
48f0de8f7b clean up 2024-10-18 07:30:23 -04:00
b606e28958 clean up of comments 2024-10-18 07:30:14 -04:00
45aeb9b3d0 ClusterToLBA to fastcall
cleanup of NextCluster
2024-10-17 20:36:05 -04:00
046821ff7a add fastcall-ish macro for light functions
only does a stack frame setup with no locals space
2024-10-17 20:35:12 -04:00
508bf1aa55 update a few missed fields and correct ALIGN on FSInfoPrinter
disable bad cluster jmp for now
2024-10-17 14:34:23 -04:00
ccf846909a update field name 2024-10-17 14:33:42 -04:00
9d4479bd86 clear dh and al 2024-10-17 14:17:15 -04:00
2b3ab1dc3a changed informational strings 2024-10-17 14:15:49 -04:00
85a8f0da1c rewrite InitFATDriver to use si/di/bx relative addresses 2024-10-17 10:34:32 -04:00
b5cc1c9ec1 move fsinfo just for my easy reading 2024-10-17 10:33:52 -04:00
e12ea89fda changing names of values to match spec more
also added prototype for FS info printer that will print some basic santity check type info.
2024-10-17 07:50:37 -04:00
e33f010f73 added carry and divz checks across the fat32 code
also use the pointers we have in bss to our saved data
2024-10-16 11:58:57 -04:00
c9f4b18d2b some debuging text for fat32 stuff 2024-10-15 20:37:49 -04:00
e680620148 remove some redundant reloads of si
use xchg to swap si/di instead of the stack
uninline ClusterToLBA call
2024-10-15 20:01:24 -04:00
56e8081118 magic debug before touching anything in error printer 2024-10-15 13:31:51 -04:00
5f9567d44e include disk signature and reserved bytes in part table struct 2024-10-15 12:51:34 -04:00
2020408e8d ha ha ha, again! 2024-10-15 12:51:02 -04:00
4660882edb change entry points (again) 2024-10-14 17:58:43 -04:00
f683b8fd17 16 KiB stage2 2024-10-14 17:58:30 -04:00
56c18d8457 correct drive_num argument on read_disk_raw 2024-10-14 13:18:41 -04:00
cfda93048b replace text documentation with markdown 2024-10-14 10:44:44 -04:00
c49de28a15 use bochs magic breakpoints in the error printer
makes it easier to get a good state to do some investigating before reseting.
2024-10-13 20:53:13 -04:00
cd833184da use bx addressing in read_disk_raw 2024-10-13 20:51:16 -04:00
f51d8b4142 initial work on a macro to call read_disk_raw 2024-10-13 16:37:52 -04:00
3693eca940 add reserved space for jmp short init at the start, technically this is part of the bpb anyways 2024-10-13 16:37:29 -04:00
a383f7cfb4 remove defs for memory locations (moving to bss) 2024-10-13 16:36:55 -04:00
eb97aac673 relocate code sections to end up with stage2 starting at 0x500 2024-10-12 22:14:47 -04:00
c60bad1066 reduced stage2 to 24KiB 2024-10-12 22:13:12 -04:00
050f90517a follow standard proceedure and reallocate the mbr to 0x600 2024-10-12 21:21:43 -04:00
555cf1271b partially roll back changing the segment to 0x07E0 2024-10-12 20:25:04 -04:00
b49b2bae68 correct typo 2024-10-12 15:39:16 -04:00
5abbfa4d15 definition corrections in part table stuff 2024-10-12 15:39:04 -04:00
ac6ad77249 renamed mem.inc and removed unused items 2024-10-12 15:38:24 -04:00
bc89850c00 first version of kmemcpy5/kmemset4 2024-10-12 14:48:26 -04:00
12fc8a1e37 use NASM defined size value from structure macro 2024-10-12 12:58:32 -04:00
baa146bef5 BIOSMemoryMap is a location in bss now, use lea 2024-10-12 12:58:16 -04:00
5a74cd86ad moved stuff that is only referenced in Stage2 to stage2 bss 2024-10-12 12:55:29 -04:00
9cde0333e6 remove PRINT_FUNC macro...this isn't it chief 2024-10-12 11:27:55 -04:00
a3f0684c85 added bochs debug wrappers 2024-10-11 19:03:27 -04:00
a8da6eef72 split e820 bios call documentation to its own file under docs/ 2024-10-11 17:20:53 -04:00
d9e46f5571 correct src size in op 2024-10-11 16:52:57 -04:00
0250d9351d inlined ClusterToLBA
removed caller save kludge for now
init first_root_dir_sector from ebpb data
2024-10-11 15:55:24 -04:00
e8fb22c826 somewhat of a cludge, but added a macro to save all caller saved regs 2024-10-11 14:25:01 -04:00
3a819a685a use kmemset to 0 out fat32_state in InitFATDriver 2024-10-11 13:00:45 -04:00
5ccd2fb12f reduce proceedure local storage to 16 bytes 2024-10-11 12:59:36 -04:00
d88b1bcb70 use gs for vesa framebuffer (was fs) 2024-10-08 20:23:16 -04:00
09d33086a0 converted error handler to a 16bit far jump
optimized the early error printer a bit to save some bytes
removed DEBUG_HCF macro
2024-10-08 08:53:30 -04:00
8e05e071e8 renamed files to show code vs defs
files that actually include code should be in .nasm files
defines/macros/non-code should be in .inc files
2024-10-07 20:41:15 -04:00