diff options
Diffstat (limited to 'backends/platform/ds/arm9/source/fat/io_dldi.s')
| -rw-r--r-- | backends/platform/ds/arm9/source/fat/io_dldi.s | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/backends/platform/ds/arm9/source/fat/io_dldi.s b/backends/platform/ds/arm9/source/fat/io_dldi.s new file mode 100644 index 0000000000..8d21522baf --- /dev/null +++ b/backends/platform/ds/arm9/source/fat/io_dldi.s @@ -0,0 +1,70 @@ +@--------------------------------------------------------------------------------- + .align 4 + .arm + .global _io_dldi +@--------------------------------------------------------------------------------- +.equ FEATURE_MEDIUM_CANREAD, 0x00000001 +.equ FEATURE_MEDIUM_CANWRITE, 0x00000002 +.equ FEATURE_SLOT_GBA, 0x00000010 +.equ FEATURE_SLOT_NDS, 0x00000020 + + +@--------------------------------------------------------------------------------- +@ Driver patch file standard header -- 16 bytes + .word 0xBF8DA5ED @ Magic number to identify this region + .asciz " Chishm" @ Identifying Magic string (8 bytes with null terminator) + .byte 0x01 @ Version number + .byte 0x0F @32KiB @ Log [base-2] of the size of this driver in bytes. + .byte 0x00 @ Sections to fix + .byte 0x0F @32KiB @ Log [base-2] of the allocated space in bytes. + +@--------------------------------------------------------------------------------- +@ Text identifier - can be anything up to 47 chars + terminating null -- 16 bytes + .align 4 + .asciz "Default (No interface)" + +@--------------------------------------------------------------------------------- +@ Offsets to important sections within the data -- 32 bytes + .align 6 + .word 0x00000000 @ data start + .word 0x00000000 @ data end + .word 0x00000000 @ Interworking glue start -- Needs address fixing + .word 0x00000000 @ Interworking glue end + .word 0x00000000 @ GOT start -- Needs address fixing + .word 0x00000000 @ GOT end + .word 0x00000000 @ bss start -- Needs setting to zero + .word 0x00000000 @ bss end + +@--------------------------------------------------------------------------------- +@ IO_INTERFACE data -- 32 bytes +_io_dldi: + .ascii "DLDI" @ ioType + .word 0x00000000 @ Features + .word _DLDI_startup @ + .word _DLDI_isInserted @ + .word _DLDI_readSectors @ Function pointers to standard device driver functions + .word _DLDI_writeSectors @ + .word _DLDI_clearStatus @ + .word _DLDI_shutdown @ + +@--------------------------------------------------------------------------------- + +_DLDI_startup: +_DLDI_isInserted: +_DLDI_readSectors: +_DLDI_writeSectors: +_DLDI_clearStatus: +_DLDI_shutdown: + mov r0, #0x00 @ Return false for every function + bx lr + + + +@--------------------------------------------------------------------------------- + .align + .pool + +.space 32632 @ Fill to 32KiB + + .end +@--------------------------------------------------------------------------------- |