Fix FAT32 entry offsets for fragmented file chains

This commit is contained in:
2026-10-07 18:31:47 +03:00
parent d76bcc5bd1
commit 0e300bf5fd
4 changed files with 457 additions and 308 deletions
+295 -295
View File
@@ -1,294 +1,294 @@
body_end: EQU 0x00001FAE
cmkf_open_stream: EQU 0x00001F79
cmkf_final: EQU 0x00001F63
cmkf_buildlfn: EQU 0x00001F47
cmkf_entry: EQU 0x00001F05
cmkf_havecl: EQU 0x00001ED7
cmkf_alloc: EQU 0x00001EC1
cmkf_havelen: EQU 0x00001EA8
cmkf_lendone: EQU 0x00001E9F
cmkf_lenloop: EQU 0x00001E92
core_mkfile: EQU 0x00001E77
cmkf_len_lo: EQU 0x00001E75
cmkf_len_hi: EQU 0x00001E73
cmkd_final: EQU 0x00001E5E
cmkd_buildlfn: EQU 0x00001E42
cmkd_ownentry: EQU 0x00001E0F
dotdot_name: EQU 0x00001F95
cmkd_dot_ok: EQU 0x00001DC3
dot_name: EQU 0x00001F8A
clear_dir_entry: EQU 0x00001FA0
cmkd_dots: EQU 0x00001D6F
cmkd_zf: EQU 0x00001D59
cmkd_have_cl: EQU 0x00001D2B
cmkd_alloc: EQU 0x00001D15
cmkd_toolong: EQU 0x00001CF4
cmkd_lendone: EQU 0x00001CF8
core_mkdir: EQU 0x00001CE7
cmk_sec_lo: EQU 0x00001CE5
cmk_sec_hi: EQU 0x00001CE3
cmk_cluster_lo: EQU 0x00001CE1
cmk_cluster_hi: EQU 0x00001CDF
cmk_name_ptr: EQU 0x00001CDD
sv512_nowrap: EQU 0x00001CD9
lv512_nowrap: EQU 0x00001CAC
lv512_advance: EQU 0x00001C96
lv512_eoc: EQU 0x00001CB9
lv512_done: EQU 0x00001CB0
lv512_loop: EQU 0x00001C75
core_load512: EQU 0x00001C6A
lv512_count: EQU 0x00001C69
lv512_off: EQU 0x00001C67
lv512_page: EQU 0x00001C66
sv512_advance: EQU 0x00001CC3
sv512_eoc: EQU 0x00001C5C
sv512_done: EQU 0x00001C53
sv512_loop: EQU 0x00001C32
core_save512: EQU 0x00001C27
sv512_count: EQU 0x00001C26
body_end: EQU 0x00001FAA
cmkf_open_stream: EQU 0x00001F75
cmkf_final: EQU 0x00001F5F
cmkf_buildlfn: EQU 0x00001F43
cmkf_entry: EQU 0x00001F01
cmkf_havecl: EQU 0x00001ED3
cmkf_alloc: EQU 0x00001EBD
cmkf_havelen: EQU 0x00001EA4
cmkf_lendone: EQU 0x00001E9B
cmkf_lenloop: EQU 0x00001E8E
core_mkfile: EQU 0x00001E73
cmkf_len_lo: EQU 0x00001E71
cmkf_len_hi: EQU 0x00001E6F
cmkd_final: EQU 0x00001E5A
cmkd_buildlfn: EQU 0x00001E3E
cmkd_ownentry: EQU 0x00001E0B
dotdot_name: EQU 0x00001F91
cmkd_dot_ok: EQU 0x00001DBF
dot_name: EQU 0x00001F86
clear_dir_entry: EQU 0x00001F9C
cmkd_dots: EQU 0x00001D6B
cmkd_zf: EQU 0x00001D55
cmkd_have_cl: EQU 0x00001D27
cmkd_alloc: EQU 0x00001D11
cmkd_toolong: EQU 0x00001CF0
cmkd_lendone: EQU 0x00001CF4
core_mkdir: EQU 0x00001CE3
cmk_sec_lo: EQU 0x00001CE1
cmk_sec_hi: EQU 0x00001CDF
cmk_cluster_lo: EQU 0x00001CDD
cmk_cluster_hi: EQU 0x00001CDB
cmk_name_ptr: EQU 0x00001CD9
sv512_nowrap: EQU 0x00001CD5
lv512_nowrap: EQU 0x00001CA8
lv512_advance: EQU 0x00001C92
lv512_eoc: EQU 0x00001CB5
lv512_done: EQU 0x00001CAC
lv512_loop: EQU 0x00001C71
core_load512: EQU 0x00001C66
lv512_count: EQU 0x00001C65
lv512_off: EQU 0x00001C63
lv512_page: EQU 0x00001C62
sv512_advance: EQU 0x00001CBF
sv512_eoc: EQU 0x00001C58
sv512_done: EQU 0x00001C4F
sv512_loop: EQU 0x00001C2E
core_save512: EQU 0x00001C23
sv512_count: EQU 0x00001C22
page1_port: EQU 0x000011AF
core_fentry: EQU 0x00001C12
core_setdir: EQU 0x00001C05
core_setroot: EQU 0x00001BF8
active_dir_lo: EQU 0x00001BF6
active_dir_hi: EQU 0x00001BF4
fbn_tm_yes: EQU 0x00001BB6
fbn_tm_short: EQU 0x00001BA4
fbn_acc_null: EQU 0x00001B76
fbn_acc_pad: EQU 0x00001B81
fbn_acc_charloop: EQU 0x00001B4A
fbn_acc_mul: EQU 0x00001B3A
fbn_acc_mul_done: EQU 0x00001B40
fbn_matched_setrun: EQU 0x00001B0B
fbn_matched_norun: EQU 0x00001B08
fbn_accumulate_lfn: EQU 0x00001B11
fbn_lfn_cont: EQU 0x00001AD2
fbn_next: EQU 0x00001ADD
fbn_matched: EQU 0x00001AF6
fbn_try_match: EQU 0x00001B84
fbn_is_lfn: EQU 0x00001AC4
fbn_deleted: EQU 0x00001AD7
fbn_notfound_pop: EQU 0x00001AF3
fbn_entloop: EQU 0x00001AA3
fbn_notfound: EQU 0x00001AF4
fbn_sector_loop: EQU 0x00001A83
find_by_name: EQU 0x00001A73
fbn_match_run_start_lo: EQU 0x00001A71
fbn_match_index_lo: EQU 0x00001A6F
fbn_run_start_lo: EQU 0x00001A6D
fbn_cur_index_lo: EQU 0x00001A6B
fbn_render_buf: EQU 0x00001A5E
fbn_attr: EQU 0x00001A5D
fbn_size_lo: EQU 0x00001A5B
fbn_size_hi: EQU 0x00001A59
fbn_cluster_hi: EQU 0x00001A55
fbn_acc_dest: EQU 0x00001A53
fbn_lfn_seen: EQU 0x00001A52
fbn_lfn_checksum: EQU 0x00001A51
fbn_lfn_buf: EQU 0x000019E8
fbn_name_ptr: EQU 0x000019E6
rsn_ext: EQU 0x000019D8
rsn_done: EQU 0x000019E2
rsn_ext_prep: EQU 0x000019CD
rsn_base_skip: EQU 0x000019CA
rsn_base: EQU 0x000019BE
render_shortname: EQU 0x000019BB
seci_eq: EQU 0x000019B9
seci_ne: EQU 0x000019B6
str_eq_ci: EQU 0x000019A3
to_upper: EQU 0x0000199A
wne_w_skip_write: EQU 0x00001991
wne_w_notinrange: EQU 0x00001963
wne_w_entloop: EQU 0x0000192D
wne_w_fail: EQU 0x00001997
wne_w_continue: EQU 0x000018F8
wne_w_done: EQU 0x000018F6
wne_w_sector_loop: EQU 0x000018E1
write_name_entries: EQU 0x000018D8
wne_w_this_sec_lo: EQU 0x000018D6
wne_w_this_sec_hi: EQU 0x000018D4
wne_w_dirty: EQU 0x000018D3
wne_w_entcount: EQU 0x000018D2
wne_w_entptr: EQU 0x000018D0
ffr_no_hi_carry: EQU 0x00001850
ffr_free_cont: EQU 0x00001819
ffr_advance_index: EQU 0x0000183A
ffr_free: EQU 0x00001803
ffr_entloop: EQU 0x000017F4
ffr_fail: EQU 0x0000185D
ffr_grow_dir: EQU 0x00001860
ffr_have_sector: EQU 0x000017DC
ffr_sector_loop: EQU 0x000017CD
find_free_run: EQU 0x000017BD
wne_free_index_lo: EQU 0x000017BB
wne_free_index_hi: EQU 0x000017B9
cmkd_lenloop: EQU 0x00001CEC
wne_cur_index_lo: EQU 0x000017B7
wne_cur_index_hi: EQU 0x000017B5
wne_run_start_lo: EQU 0x000017B3
wne_run_start_hi: EQU 0x000017B1
wne_run_len: EQU 0x000017B0
ble_char_nextk: EQU 0x0000177D
ble_char_hi0: EQU 0x0000177B
ble_char_have: EQU 0x00001761
ble_char_isreal: EQU 0x00001757
ble_char_isnull: EQU 0x00001760
ble_lfn_next: EQU 0x00001780
ble_charloop: EQU 0x00001738
ble_mul13done: EQU 0x00001733
ble_mul13: EQU 0x00001728
ble_seqset: EQU 0x0000170A
ble_notlast: EQU 0x00001709
ble_lfn_done: EQU 0x00001787
ble_lfn_loop: EQU 0x000016D2
ble_divdone: EQU 0x000016BB
ble_divloop: EQU 0x000016B0
ble_multi: EQU 0x000016A7
build_lfn_entries: EQU 0x00001682
ble_entry_ptr: EQU 0x00001680
ble_charpos: EQU 0x0000167E
ble_j: EQU 0x0000167D
ble_checksum: EQU 0x0000167C
ble_lfn_count: EQU 0x0000167B
ble_name_ptr: EQU 0x00001679
lfn_char_dest: EQU 0x0000166C
wne_slot_count: EQU 0x0000166B
wne_entries_buf: EQU 0x0000154B
core_fentry: EQU 0x00001C0E
core_setdir: EQU 0x00001C01
core_setroot: EQU 0x00001BF4
active_dir_lo: EQU 0x00001BF2
active_dir_hi: EQU 0x00001BF0
fbn_tm_yes: EQU 0x00001BB2
fbn_tm_short: EQU 0x00001BA0
fbn_acc_null: EQU 0x00001B72
fbn_acc_pad: EQU 0x00001B7D
fbn_acc_charloop: EQU 0x00001B46
fbn_acc_mul: EQU 0x00001B36
fbn_acc_mul_done: EQU 0x00001B3C
fbn_matched_setrun: EQU 0x00001B07
fbn_matched_norun: EQU 0x00001B04
fbn_accumulate_lfn: EQU 0x00001B0D
fbn_lfn_cont: EQU 0x00001ACE
fbn_next: EQU 0x00001AD9
fbn_matched: EQU 0x00001AF2
fbn_try_match: EQU 0x00001B80
fbn_is_lfn: EQU 0x00001AC0
fbn_deleted: EQU 0x00001AD3
fbn_notfound_pop: EQU 0x00001AEF
fbn_entloop: EQU 0x00001A9F
fbn_notfound: EQU 0x00001AF0
fbn_sector_loop: EQU 0x00001A7F
find_by_name: EQU 0x00001A6F
fbn_match_run_start_lo: EQU 0x00001A6D
fbn_match_index_lo: EQU 0x00001A6B
fbn_run_start_lo: EQU 0x00001A69
fbn_cur_index_lo: EQU 0x00001A67
fbn_render_buf: EQU 0x00001A5A
fbn_attr: EQU 0x00001A59
fbn_size_lo: EQU 0x00001A57
fbn_size_hi: EQU 0x00001A55
fbn_cluster_hi: EQU 0x00001A51
fbn_acc_dest: EQU 0x00001A4F
fbn_lfn_seen: EQU 0x00001A4E
fbn_lfn_checksum: EQU 0x00001A4D
fbn_lfn_buf: EQU 0x000019E4
fbn_name_ptr: EQU 0x000019E2
rsn_ext: EQU 0x000019D4
rsn_done: EQU 0x000019DE
rsn_ext_prep: EQU 0x000019C9
rsn_base_skip: EQU 0x000019C6
rsn_base: EQU 0x000019BA
render_shortname: EQU 0x000019B7
seci_eq: EQU 0x000019B5
seci_ne: EQU 0x000019B2
str_eq_ci: EQU 0x0000199F
to_upper: EQU 0x00001996
wne_w_skip_write: EQU 0x0000198D
wne_w_notinrange: EQU 0x0000195F
wne_w_entloop: EQU 0x00001929
wne_w_fail: EQU 0x00001993
wne_w_continue: EQU 0x000018F4
wne_w_done: EQU 0x000018F2
wne_w_sector_loop: EQU 0x000018DD
write_name_entries: EQU 0x000018D4
wne_w_this_sec_lo: EQU 0x000018D2
wne_w_this_sec_hi: EQU 0x000018D0
wne_w_dirty: EQU 0x000018CF
wne_w_entcount: EQU 0x000018CE
wne_w_entptr: EQU 0x000018CC
ffr_no_hi_carry: EQU 0x0000184C
ffr_free_cont: EQU 0x00001815
ffr_advance_index: EQU 0x00001836
ffr_free: EQU 0x000017FF
ffr_entloop: EQU 0x000017F0
ffr_fail: EQU 0x00001859
ffr_grow_dir: EQU 0x0000185C
ffr_have_sector: EQU 0x000017D8
ffr_sector_loop: EQU 0x000017C9
find_free_run: EQU 0x000017B9
wne_free_index_lo: EQU 0x000017B7
wne_free_index_hi: EQU 0x000017B5
cmkd_lenloop: EQU 0x00001CE8
wne_cur_index_lo: EQU 0x000017B3
wne_cur_index_hi: EQU 0x000017B1
wne_run_start_lo: EQU 0x000017AF
wne_run_start_hi: EQU 0x000017AD
wne_run_len: EQU 0x000017AC
ble_char_nextk: EQU 0x00001779
ble_char_hi0: EQU 0x00001777
ble_char_have: EQU 0x0000175D
ble_char_isreal: EQU 0x00001753
ble_char_isnull: EQU 0x0000175C
ble_lfn_next: EQU 0x0000177C
ble_charloop: EQU 0x00001734
ble_mul13done: EQU 0x0000172F
ble_mul13: EQU 0x00001724
ble_seqset: EQU 0x00001706
ble_notlast: EQU 0x00001705
ble_lfn_done: EQU 0x00001783
ble_lfn_loop: EQU 0x000016CE
ble_divdone: EQU 0x000016B7
ble_divloop: EQU 0x000016AC
ble_multi: EQU 0x000016A3
build_lfn_entries: EQU 0x0000167E
ble_entry_ptr: EQU 0x0000167C
ble_charpos: EQU 0x0000167A
ble_j: EQU 0x00001679
ble_checksum: EQU 0x00001678
ble_lfn_count: EQU 0x00001677
ble_name_ptr: EQU 0x00001675
lfn_char_dest: EQU 0x00001668
wne_slot_count: EQU 0x00001667
wne_entries_buf: EQU 0x00001547
wne_max_lfn: EQU 0x00000008
btd_done: EQU 0x0000153F
btd_loop: EQU 0x00001536
gus_have_candidate: EQU 0x00001515
bin_to_2dig: EQU 0x00001534
gus_try_1digit: EQU 0x000014FD
gus_try: EQU 0x000014D8
gus_ok: EQU 0x00001532
gus_needs_suffix: EQU 0x000014D3
generate_unique_shortname: EQU 0x000014B4
gus_suffix: EQU 0x000014B3
fn83_ext_full: EQU 0x000014A5
fn83_ext_bad: EQU 0x000014AC
fn83_ext_loop: EQU 0x00001487
fn83_ext_go: EQU 0x00001470
fn83_base_full: EQU 0x00001455
fn83_base_bad: EQU 0x0000145C
fn83_ext: EQU 0x00001463
fn83_base_loop: EQU 0x00001436
fn83_have_baselen: EQU 0x0000142B
fn83_scan_next: EQU 0x000013E9
fn83_scandone: EQU 0x000013ED
fn83_scan: EQU 0x000013DD
filter_name_to_83: EQU 0x000013D2
fn83_charbuf: EQU 0x000013D1
sn_base_len: EQU 0x000013CF
sn_dot_pos: EQU 0x000013CD
sn_name_len: EQU 0x000013CB
sn_needs_lfn: EQU 0x000013CA
sn_ext: EQU 0x000013C7
sn_base: EQU 0x000013BF
cc_symyes: EQU 0x000013BA
cc_no: EQU 0x000013BD
cc_symloop: EQU 0x000013B0
cc_sym: EQU 0x000013AC
cc_yes: EQU 0x000013BB
cc_dig: EQU 0x000013A4
cc_up: EQU 0x0000139C
classify_char: EQU 0x00001392
cc_symbols: EQU 0x00001381
lfnck_loop: EQU 0x0000137B
lfn_checksum: EQU 0x00001378
stamp_dir_entry_datetime: EQU 0x00001162
rtc_to_fat_datetime: EQU 0x000010E6
rtc_cached: EQU 0x000010E5
fat_time: EQU 0x000010E3
fat_date: EQU 0x000010E1
bcd_to_bin: EQU 0x000010CC
rtc_field_to_bin: EQU 0x000010C0
rtc_dm: EQU 0x000010BF
rtc_year: EQU 0x0000104E
rtc_month: EQU 0x0000104D
rtc_date: EQU 0x0000104C
rtc_hour: EQU 0x0000104B
rtc_min: EQU 0x0000104A
rtc_sec: EQU 0x00001049
sv512_off: EQU 0x00001C24
sv512_page: EQU 0x00001C23
strm_write_have2: EQU 0x00001034
stream_write_sector_from: EQU 0x00000FD0
read_rtc_datetime: EQU 0x0000104F
strm_write_have: EQU 0x00000FBB
stream_write_sector: EQU 0x00000F4D
stream_read_sector_to: EQU 0x00000D32
stream_data_save: EQU 0x00000D4D
strm_read_eoc: EQU 0x00000D2F
stream_read_sector: EQU 0x00000CFC
strm_adv_same: EQU 0x00000CF6
strm_adv_cross: EQU 0x00000CCF
strm_adv_test_z: EQU 0x00000CC7
strm_advance: EQU 0x00000CBA
strm_calc_sector: EQU 0x00000C92
strm_open_nz: EQU 0x00000C7E
stream_open: EQU 0x00000C64
strm_sector_lo: EQU 0x00000C62
strm_sector_hi: EQU 0x00000C60
stream_eoc: EQU 0x00000C5F
stream_sec_in_cluster: EQU 0x00000C5E
stream_cluster_lo: EQU 0x00000C5C
stream_cluster_hi: EQU 0x00000C5A
wde_next: EQU 0x00000C29
wde_slot: EQU 0x00000C3A
wde_entloop: EQU 0x00000C09
wde_fail: EQU 0x00000C57
wde_sec_loop: EQU 0x00000BF4
wde_cluster: EQU 0x00000BDF
write_dir_entry: EQU 0x00000BDF
wde_slotptr: EQU 0x00000BDD
wde_sector_lo: EQU 0x00000BDB
wde_sector_hi: EQU 0x00000BD9
wde_remaining: EQU 0x00000BD8
dir_entry_buf: EQU 0x00000BB8
zfc_loop: EQU 0x00000BA6
zfc_fail: EQU 0x00000BB5
zero_fill_cluster: EQU 0x00000B80
zfc_remaining: EQU 0x00000B7F
ffc_nowrap: EQU 0x00000B70
ffc_nsv2: EQU 0x00000B4A
ffc_nsv: EQU 0x00000B44
ffc_entnext: EQU 0x00000B54
ffc_entloop: EQU 0x00000B0D
ffc_fail: EQU 0x00000B7C
ffc_from2: EQU 0x00000AC3
ffc_scan: EQU 0x00000AD2
ffc_use_hint: EQU 0x00000AA9
find_free_cluster: EQU 0x00000A8E
next_search_valid: EQU 0x00000A89
ffc_sectors_read: EQU 0x00000A87
ffc_count: EQU 0x00000A86
ffc_ptr: EQU 0x00000A84
free_cluster_lo: EQU 0x00000A82
free_cluster_hi: EQU 0x00000A80
next_search_hi: EQU 0x00000A8A
next_search_lo: EQU 0x00000A8C
wfi_skip_count: EQU 0x00000A64
write_fsinfo_hint: EQU 0x00000A29
read_fsinfo_hint: EQU 0x000009CA
fsinfo_valid: EQU 0x000009C9
fsinfo_hint_lo: EQU 0x000009C7
fsinfo_hint_hi: EQU 0x000009C5
wfe_loop: EQU 0x0000098E
wfe_fail: EQU 0x000009C0
write_fat_entry: EQU 0x0000093F
wfe_sector_lo: EQU 0x0000093D
wfe_sector_hi: EQU 0x0000093B
wfe_remaining: EQU 0x0000093A
new_val_lo: EQU 0x00000938
new_val_hi: EQU 0x00000936
gnc_have_next: EQU 0x00000925
gnc_end: EQU 0x0000091F
nxt_hi: EQU 0x000008D8
nxt_lo: EQU 0x000008D6
ctf_bad: EQU 0x000008D2
ctf_shr: EQU 0x00000883
cluster_to_fatpos: EQU 0x00000875
btd_done: EQU 0x0000153B
btd_loop: EQU 0x00001532
gus_have_candidate: EQU 0x00001511
bin_to_2dig: EQU 0x00001530
gus_try_1digit: EQU 0x000014F9
gus_try: EQU 0x000014D4
gus_ok: EQU 0x0000152E
gus_needs_suffix: EQU 0x000014CF
generate_unique_shortname: EQU 0x000014B0
gus_suffix: EQU 0x000014AF
fn83_ext_full: EQU 0x000014A1
fn83_ext_bad: EQU 0x000014A8
fn83_ext_loop: EQU 0x00001483
fn83_ext_go: EQU 0x0000146C
fn83_base_full: EQU 0x00001451
fn83_base_bad: EQU 0x00001458
fn83_ext: EQU 0x0000145F
fn83_base_loop: EQU 0x00001432
fn83_have_baselen: EQU 0x00001427
fn83_scan_next: EQU 0x000013E5
fn83_scandone: EQU 0x000013E9
fn83_scan: EQU 0x000013D9
filter_name_to_83: EQU 0x000013CE
fn83_charbuf: EQU 0x000013CD
sn_base_len: EQU 0x000013CB
sn_dot_pos: EQU 0x000013C9
sn_name_len: EQU 0x000013C7
sn_needs_lfn: EQU 0x000013C6
sn_ext: EQU 0x000013C3
sn_base: EQU 0x000013BB
cc_symyes: EQU 0x000013B6
cc_no: EQU 0x000013B9
cc_symloop: EQU 0x000013AC
cc_sym: EQU 0x000013A8
cc_yes: EQU 0x000013B7
cc_dig: EQU 0x000013A0
cc_up: EQU 0x00001398
classify_char: EQU 0x0000138E
cc_symbols: EQU 0x0000137D
lfnck_loop: EQU 0x00001377
lfn_checksum: EQU 0x00001374
stamp_dir_entry_datetime: EQU 0x0000115D
rtc_to_fat_datetime: EQU 0x000010E1
rtc_cached: EQU 0x000010E0
fat_time: EQU 0x000010DE
fat_date: EQU 0x000010DC
bcd_to_bin: EQU 0x000010C7
rtc_field_to_bin: EQU 0x000010BB
rtc_dm: EQU 0x000010BA
rtc_year: EQU 0x00001049
rtc_month: EQU 0x00001048
rtc_date: EQU 0x00001047
rtc_hour: EQU 0x00001046
rtc_min: EQU 0x00001045
rtc_sec: EQU 0x00001044
sv512_off: EQU 0x00001C20
sv512_page: EQU 0x00001C1F
strm_write_have2: EQU 0x0000102F
stream_write_sector_from: EQU 0x00000FCB
read_rtc_datetime: EQU 0x0000104A
strm_write_have: EQU 0x00000FB6
stream_write_sector: EQU 0x00000F48
stream_read_sector_to: EQU 0x00000D2D
stream_data_save: EQU 0x00000D48
strm_read_eoc: EQU 0x00000D2A
stream_read_sector: EQU 0x00000CF7
strm_adv_same: EQU 0x00000CF1
strm_adv_cross: EQU 0x00000CCA
strm_adv_test_z: EQU 0x00000CC2
strm_advance: EQU 0x00000CB5
strm_calc_sector: EQU 0x00000C8D
strm_open_nz: EQU 0x00000C79
stream_open: EQU 0x00000C5F
strm_sector_lo: EQU 0x00000C5D
strm_sector_hi: EQU 0x00000C5B
stream_eoc: EQU 0x00000C5A
stream_sec_in_cluster: EQU 0x00000C59
stream_cluster_lo: EQU 0x00000C57
stream_cluster_hi: EQU 0x00000C55
wde_next: EQU 0x00000C24
wde_slot: EQU 0x00000C35
wde_entloop: EQU 0x00000C04
wde_fail: EQU 0x00000C52
wde_sec_loop: EQU 0x00000BEF
wde_cluster: EQU 0x00000BDA
write_dir_entry: EQU 0x00000BDA
wde_slotptr: EQU 0x00000BD8
wde_sector_lo: EQU 0x00000BD6
wde_sector_hi: EQU 0x00000BD4
wde_remaining: EQU 0x00000BD3
dir_entry_buf: EQU 0x00000BB3
zfc_loop: EQU 0x00000BA1
zfc_fail: EQU 0x00000BB0
zero_fill_cluster: EQU 0x00000B7B
zfc_remaining: EQU 0x00000B7A
ffc_nowrap: EQU 0x00000B6B
ffc_nsv2: EQU 0x00000B45
ffc_nsv: EQU 0x00000B3F
ffc_entnext: EQU 0x00000B4F
ffc_entloop: EQU 0x00000B08
ffc_fail: EQU 0x00000B77
ffc_from2: EQU 0x00000AC1
ffc_scan: EQU 0x00000AD0
ffc_use_hint: EQU 0x00000AA7
find_free_cluster: EQU 0x00000A8C
next_search_valid: EQU 0x00000A87
ffc_sectors_read: EQU 0x00000A85
ffc_count: EQU 0x00000A84
ffc_ptr: EQU 0x00000A82
free_cluster_lo: EQU 0x00000A80
free_cluster_hi: EQU 0x00000A7E
next_search_hi: EQU 0x00000A88
next_search_lo: EQU 0x00000A8A
wfi_skip_count: EQU 0x00000A62
write_fsinfo_hint: EQU 0x00000A27
read_fsinfo_hint: EQU 0x000009C8
fsinfo_valid: EQU 0x000009C7
fsinfo_hint_lo: EQU 0x000009C5
fsinfo_hint_hi: EQU 0x000009C3
wfe_loop: EQU 0x0000098C
wfe_fail: EQU 0x000009BE
write_fat_entry: EQU 0x00000940
wfe_sector_lo: EQU 0x0000093E
wfe_sector_hi: EQU 0x0000093C
wfe_remaining: EQU 0x0000093B
new_val_lo: EQU 0x00000939
new_val_hi: EQU 0x00000937
gnc_have_next: EQU 0x00000926
gnc_end: EQU 0x00000920
nxt_hi: EQU 0x000008DC
nxt_lo: EQU 0x000008DA
ctf_bad: EQU 0x000008D6
ctf_shr: EQU 0x00000884
cluster_to_fatpos: EQU 0x00000876
gnc_inoff: EQU 0x00000874
gnc_fatsec_lo: EQU 0x00000872
gnc_fatsec_hi: EQU 0x00000870
@@ -302,8 +302,8 @@ c2s_prod_hi: EQU 0x00000805
c2s_prod_lo: EQU 0x00000803
c2s_hi: EQU 0x00000801
c2s_lo: EQU 0x000007FF
chain_ended: EQU 0x000008D5
get_next_cluster: EQU 0x000008DA
chain_ended: EQU 0x000008D9
get_next_cluster: EQU 0x000008DE
fza_next: EQU 0x000007E9
fza_inc_loop: EQU 0x000007E1
fza_done: EQU 0x000007FC
@@ -324,7 +324,7 @@ fz_loop: EQU 0x0000075A
find_zifi: EQU 0x00000755
target_name: EQU 0x0000074A
zifi_size: EQU 0x00000748
fbn_acc_nocs: EQU 0x00001B25
fbn_acc_nocs: EQU 0x00001B21
zifi_size_hi: EQU 0x00000746
zifi_cluster: EQU 0x00000744
zifi_cluster_hi: EQU 0x00000742
@@ -348,7 +348,7 @@ fatsz32_lo: EQU 0x00000726
fatsz32_hi: EQU 0x00000728
sectors_per_cluster: EQU 0x00000725
num_fats: EQU 0x00000724
fsinfo_sector: EQU 0x000009C3
fsinfo_sector: EQU 0x000009C1
reserved_sectors: EQU 0x00000722
total_sectors_hi: EQU 0x0000071C
total_sectors_lo: EQU 0x0000071A
@@ -394,7 +394,7 @@ dma_send_ext: EQU 0x0000015F
dma_wait: EQU 0x00000179
dma_recv_ext: EQU 0x00000143
dma_set_addr_ext: EQU 0x0000012D
sdbuf: EQU 0x00001178
sdbuf: EQU 0x00001174
set_dma_sdbuf: EQU 0x00000121
dma_xfer_page: EQU 0x00000120
dma_xfer_off: EQU 0x0000011E
@@ -431,4 +431,4 @@ sdinit_fail: EQU 0x000000A4
cycl: EQU 0x000002AC
csh: EQU 0x00000245
sdinit: EQU 0x00000000
fbn_cluster_lo: EQU 0x00001A57
fbn_cluster_lo: EQU 0x00001A53
+153
View File
@@ -0,0 +1,153 @@
"""Run assembled driver routines with an in-memory block device.
Requires Python package z80 and a fresh body build with --sym=body_syms_new.txt.
Run: python tests/test_fat_offsets.py
SPI/DMA sector I/O is intercepted; FAT traversal and LOAD512 execute as Z80 code.
"""
from pathlib import Path
import re
import z80
ROOT = Path(__file__).resolve().parents[1]
SYMS = dict((name, int(value, 16)) for name, value in re.findall(
r"^(\w+): EQU 0x([0-9A-Fa-f]+)$",
(ROOT / 'body_syms_new.txt').read_text(), re.M))
BODY = (ROOT / 'zc_sd_driver_body.bin').read_bytes()
class Driver:
def __init__(self):
self.m = z80.Z80Machine()
self.m.set_memory_block(0, BODY)
self.disk = {}
self.ram = bytearray(256 * 16384)
self.hooks = {SYMS[n]: n for n in
('sdread_lba', 'sdread_lba_to', 'sdwrite_lba', 'write_fsinfo_hint')}
for address in [0xff00, *self.hooks]:
self.m.set_breakpoint(address)
self.put('reserved_sectors', 32)
self.put('fatsz32_lo', 64)
self.put('addtop_lo', 17)
self.put('data_start_lo', 1000)
self.put('sectors_per_cluster', 2, 1)
self.put('num_fats', 2, 1)
def put(self, name, value, size=2):
self.m.set_memory_block(SYMS[name], value.to_bytes(size, 'little'))
def get(self, name, size=2):
return int.from_bytes(self.m.memory[SYMS[name]:SYMS[name]+size], 'little')
def cluster(self, value):
self.put('cur_cluster_lo', value & 65535)
self.put('cur_cluster_hi', value >> 16)
def fat(self, cluster, value):
sector, offset = divmod(cluster * 4, 512)
block = self.disk.setdefault(49 + sector, bytearray(512))
block[offset:offset+4] = value.to_bytes(4, 'little')
def call(self, name):
self.m.sp = 0xfef0
self.m.set_memory_block(self.m.sp, b'\x00\xff')
self.m.pc = SYMS[name]
for _ in range(10000):
self.m.ticks_to_stop = 100000
self.m.run()
if self.m.pc == 0xff00:
return self.m.a
hook = self.hooks.get(self.m.pc)
if not hook:
continue
if hook != 'write_fsinfo_hint':
lba = int.from_bytes(self.m.memory[SYMS['lba_arg']:SYMS['lba_arg']+4], 'big')
if hook == 'sdwrite_lba':
p = SYMS['sdbuf']
self.disk[lba] = bytearray(self.m.memory[p:p+512])
elif hook == 'sdread_lba':
self.m.set_memory_block(SYMS['sdbuf'], self.disk[lba])
# Real sdread_lba resets the DMA destination to sdbuf.
self.put('dma_xfer_page', 15, 1)
self.put('dma_xfer_off', SYMS['sdbuf'])
else:
dest = self.get('dma_xfer_page', 1)*16384 + (self.get('dma_xfer_off') & 16383)
self.ram[dest:dest+512] = self.disk[lba]
self.m.af = 0x0040 # A=0, Z=1 (successful sector I/O)
self.m.pc = int.from_bytes(self.m.memory[self.m.sp:self.m.sp+2], 'little')
self.m.sp += 2
raise AssertionError(f'{name}: execution did not return')
def test_offsets_and_links():
d = Driver()
for n in range(128):
d.fat(256+n, 2000+n)
for n in range(128):
d.cluster(256+n)
assert d.call('cluster_to_fatpos') == 0
assert d.get('gnc_fatsec_lo') == 34
assert d.get('gnc_inoff') == n*4, n
d.call('get_next_cluster')
assert d.get('chain_ended', 1) == 0
assert d.get('cur_cluster_lo') == 2000+n, n
for n in (65535, 65536, 0x123456):
d.put('fatsz32_lo', 65535)
d.cluster(n)
assert d.call('cluster_to_fatpos') == 0
sector = d.get('gnc_fatsec_lo') | d.get('gnc_fatsec_hi') << 16
assert sector == 32 + n//128
assert d.get('gnc_inoff') == (n % 128)*4
def test_write_and_allocation():
for n in range(128):
d = Driver()
original = bytearray(b'\x55\x55\x55\xa5'*128)
d.disk[51] = original[:]
d.cluster(256+n)
d.put('new_val_lo', 0x3456)
d.put('new_val_hi', 0x0123)
assert d.call('write_fat_entry') == 0
expected = original[:]
expected[n*4:n*4+4] = b'\x56\x34\x23\xa1'
assert d.disk[51] == expected, n
assert d.disk[115] == expected, n
for start, free in ((319, 320), (320, 321), (356, 357), (383, 384)):
d = Driver()
for n in range(256, 512):
d.fat(n, 0x0fffffff)
d.fat(free, 0)
d.put('next_search_valid', 1, 1)
d.put('next_search_lo', start)
assert d.call('find_free_cluster') == 0
assert d.get('free_cluster_lo') == free, (start, free)
def test_fragmented_load():
d = Driver()
chain = [319, 500, 320, 1023, 384, 383, 356, 256] * 1
# 40 non-adjacent clusters, 40 KiB: crosses FAT sectors and RAM pages.
chain += [1300 + n*137 for n in range(32)]
expected = bytearray()
for index, cluster in enumerate(chain):
d.fat(cluster, chain[index+1] if index+1 < len(chain) else 0x0fffffff)
for sector in range(2):
data = bytearray((index*19 + sector*71 + i) % 256 for i in range(512))
d.disk[1017+(cluster-2)*2+sector] = data
expected.extend(data)
d.cluster(chain[0])
d.call('stream_open')
d.m.c, d.m.hl = 32, 0x4000
for count in (13, 27, 40):
d.m.b = count
assert d.call('core_load512') == 0
assert d.ram[32*16384:32*16384+len(expected)] == expected
assert (d.m.c, d.m.hl) == (34, 0x6000)
d.m.b = 1
assert d.call('core_load512') == 15
if __name__ == '__main__':
for test in (test_offsets_and_links, test_write_and_allocation, test_fragmented_load):
test()
print(f'PASS: {test.__name__}')
+9 -13
View File
@@ -1278,7 +1278,7 @@ gnc_hi dw 0
gnc_lo dw 0
gnc_fatsec_hi dw 0
gnc_fatsec_lo dw 0
gnc_inoff db 0
gnc_inoff dw 0 ; FAT32 entry offset: 0..508, needs 9 bits
cluster_to_fatpos
ld hl,(cur_cluster_hi)
@@ -1317,9 +1317,11 @@ ctf_shr ld hl,(gnc_hi)
ld hl,(cur_cluster_lo)
ld a,l
and #7f
add a,a
add a,a
ld (gnc_inoff),a
ld l,a
ld h,0
add hl,hl
add hl,hl
ld (gnc_inoff),hl
xor a
ret
@@ -1350,9 +1352,7 @@ get_next_cluster
or a
jr nz,gnc_end
ld a,(gnc_inoff)
ld l,a
ld h,0
ld hl,(gnc_inoff)
ld de,sdbuf
add hl,de
ld a,(hl)
@@ -1435,9 +1435,7 @@ write_fat_entry
or a
jr nz,wfe_fail
ld a,(gnc_inoff)
ld l,a
ld h,0
ld hl,(gnc_inoff)
ld de,sdbuf
add hl,de
ld a,(new_val_lo)
@@ -1693,9 +1691,7 @@ ffc_scan call cluster_to_fatpos
inc hl
ld (ffc_sectors_read),hl
ld a,(gnc_inoff)
ld l,a
ld h,0
ld hl,(gnc_inoff)
ld de,sdbuf
add hl,de
ld (ffc_ptr),hl