35 lines
594 B
ArmAsm
35 lines
594 B
ArmAsm
.macro xfer_in from, to
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move.w (%A0), (%A1)+
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nop
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nop
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nop
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.if \to-\from
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xfer_in "(\from+1)"
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.else
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.endif
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.endm
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;pragma parameter xfer_s_256(__A0, __A1)
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;void xfer_s_256(Ptr srcreg, Ptr destmem);
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xfer_256:
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movem.l %D0/%A1-%A2, -(%SP)
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xfer_256_loop:
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xfer_s_in 0, 255
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xfer_256_end:
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movem.l (%SP)+, %D0/%A1-%A2
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;pragma parameter xfer_s(__D0, __A0, __A1)
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;void xfer_s(uint8_t numBytes, Ptr srcreg, Ptr destmem);
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xfer:
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movem.l %D0/%A1-%A2, -(%SP)
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andi.l #0xFF, %D0
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subi.l #256, %D0
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neg.l %D0
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lsl.l #2, %D0
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addi.l #xfer_256, %D0
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movea.l %D0, %A2
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jmp %A2
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