61 lines
808 B
ArmAsm
61 lines
808 B
ArmAsm
|
#include <asm.h>
|
||
|
|
|
||
|
|
# issue read command
|
||
|
|
#
|
||
|
|
# r3 dvdstruct
|
||
|
|
# r4 dst
|
||
|
|
# r5 cb
|
||
|
|
|
||
|
|
DVDInquiryAsync:
|
||
|
|
|
||
|
|
stwu %sp, -0x10(%sp)
|
||
|
|
mflr %r0
|
||
|
|
stw %r0, 8(%sp)
|
||
|
|
|
||
|
|
#update dvdstruct
|
||
|
|
|
||
|
|
li %r0, 0
|
||
|
|
stw %r0, 0x00(%r3)
|
||
|
|
stw %r0, 0x04(%r3)
|
||
|
|
stw %r0, 0x0C(%r3)
|
||
|
|
#offset
|
||
|
|
stw %r0, 0x10(%r3)
|
||
|
|
|
||
|
|
li %r0, 2
|
||
|
|
stw %r0, 0x08(%r3)
|
||
|
|
|
||
|
|
li %r0, 0x20
|
||
|
|
#TransferSize
|
||
|
|
stw %r0, 0x1C(%r3)
|
||
|
|
stw %r0, 0x20(%r3)
|
||
|
|
#size
|
||
|
|
stw %r0, 0x14(%r3)
|
||
|
|
|
||
|
|
#ptr
|
||
|
|
stw %r4, 0x18(%r3)
|
||
|
|
#cb
|
||
|
|
stw %r5, 0x28(%r3)
|
||
|
|
|
||
|
|
#Inquiry reply
|
||
|
|
|
||
|
|
li %r0, 0
|
||
|
|
dcbi %r0, %r4
|
||
|
|
|
||
|
|
li %r0, 0x0000
|
||
|
|
sth %r0, 0x02(%r4)
|
||
|
|
|
||
|
|
cmpwi %r5, 0
|
||
|
|
beq skip_cb
|
||
|
|
mtctr %r5
|
||
|
|
mr %r4, %r3
|
||
|
|
li %r3, 0x20
|
||
|
|
bctrl
|
||
|
|
|
||
|
|
skip_cb:
|
||
|
|
li %r3, 1
|
||
|
|
|
||
|
|
lwz %r0, 8(%sp)
|
||
|
|
mtlr %r0
|
||
|
|
addi %sp, %sp, 0x10
|
||
|
|
blr
|