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