diosmios/asm/CARDCheckAsync.S

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ArmAsm
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#include <asm.h>
#
# r3 Channel
# r4 cb( chan, res )
CARDCheck:
mflr %r0
stw %r0, 4(%sp)
stwu %sp, -0x10(%sp)
cmpwi %r3, 0
beq CARDPresent
cmpwi %r4, 0
beq NoCardNoCB
mtctr %r4
li %r4, -3
bctrl
NoCardNoCB:
li %r3, -3
b end
CARDPresent:
cmpwi %r4, 0
beq CardNoCB
mtctr %r4
li %r4, 0
bctrl
CardNoCB:
li %r3, 0
end:
lwz %r0, 0x14(%sp)
addi %sp, %sp, 0x10
mtlr %r0
blr