Add ryfs_get_file_list, bump version to 0.3.0

This commit is contained in:
Ry 2022-08-09 23:22:51 -07:00
parent c171e99680
commit 5845ea6e60
3 changed files with 49 additions and 1 deletions

View File

@ -67,6 +67,7 @@ ryfs_seek: jmp [0xF004500C]
ryfs_read: jmp [0xF0045010]
ryfs_read_whole_file: jmp [0xF0045014]
ryfs_get_size: jmp [0xF0045018]
ryfs_get_file_list: jmp [0xF004501C]
; memory copy/compare jump table
copy_memory_bytes: jmp [0xF0046000]

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@ -3,7 +3,7 @@
org 0xF0000000
const FOX32ROM_VERSION_MAJOR: 0
const FOX32ROM_VERSION_MINOR: 2
const FOX32ROM_VERSION_MINOR: 3
const FOX32ROM_VERSION_PATCH: 0
const SYSTEM_STACK: 0x01FFF800
@ -231,6 +231,7 @@ get_rom_version:
data.32 ryfs_read
data.32 ryfs_read_whole_file
data.32 ryfs_get_size
data.32 ryfs_get_file_list
; memory copy/compare jump table
org.pad 0xF0046000

View File

@ -317,3 +317,49 @@ ryfs_get_size_last_sector:
pop r2
pop r1
ret
; get a list of all files on disk
; format: "file1 extfile2 ext", etc.
; each file name is exactly 11 characters long, the buffer is not null-terminated
; inputs:
; r0: pointer to 341 byte buffer (max size) for file names (31 file entries * 11 chars)
; r1: disk ID
; outputs:
; r0: number of files
ryfs_get_file_list:
push r1
push r2
push r3
mov r3, r0
; load directory sector into temp buffer
mov r0, 1
mov r2, TEMP_SECTOR_BUF
call read_sector
mov r31, 31
mov r0, TEMP_SECTOR_BUF
add r0, 20 ; point to first file name
mov r1, r3
mov r3, 0 ; file counter
ryfs_get_file_list_loop:
; check if this file entry is filled
cmp.8 [r0], 0
ifz jmp ryfs_get_file_list_loop_next
; copy 11 bytes from [r0] to [r1]
mov r2, 11
call copy_memory_bytes
inc r3
ryfs_get_file_list_loop_next:
add r0, 16 ; point to next file entry
add r1, 11 ; increment the destination pointer
loop ryfs_get_file_list_loop
; return number of files
mov r0, r3
pop r3
pop r2
pop r1
ret