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clear Next cluster data in bss on every NextCluster call

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This commit is contained in:
Elaina Claus
2024-10-19 10:54:58 -04:00
parent d98786072c
commit 6ff9a2307f
1 changed files with 16 additions and 4 deletions
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20
include/fat32/FAT32_SYS.inc
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@@ -89,10 +89,12 @@ FSInfoPrinter:
__CDECL16_ENTRY __CDECL16_ENTRY
.func: .func:
;info we want to print to validate we are loading stuff from the disk correctly ;info we want to print to validate we are loading stuff from the disk correctly
; BPB Info ; boot_drive # (i.e 0x80)
; BS_OEMName = ident_8 ; active/bootable partition info (lba_start, lba_length, part_type)
; BPB_BytsPerSec = bytes_per_sector_16 ; BPB Info: BS_OEMName = ident_8, BPB_BytsPerSec = bytes_per_sector_16, BPB_SecPerClus = sectors_per_cluster_8
; BPB_SecPerClus = sectors_per_cluster_8 ; eBPB info: FATSz_dword, volid, vol label
;
; print entire FAT32 state
; ;
.endp: .endp:
__CDECL16_EXIT __CDECL16_EXIT
@@ -220,6 +222,16 @@ NextCluster:
__CDECL16_ENTRY __CDECL16_ENTRY
.func: .func:
print_string NextFATCluster_info print_string NextFATCluster_info
mov ax, FAT32_NextClusterData_t_size
push ax ; length
xor ax, ax
push ax ; init with zero
mov ax, fat32_nc_data
push ax ; address of structure
call kmemset
sub sp, 0x6
mov edx, dword [bp + 4] mov edx, dword [bp + 4]
mov si, fat32_nc_data ; instead of push/pop and moving the data back mov si, fat32_nc_data ; instead of push/pop and moving the data back
mov di, fat32_bpb ; load si & di then use xchg mov di, fat32_bpb ; load si & di then use xchg