18 lines
226 B
ArmAsm
18 lines
226 B
ArmAsm
.define exg
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!size (bytes) in R0
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exg:
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ldm savereg, R4, $10
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ldl RR2, RR14
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inc R3, $2
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ldl RR4, RR2
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add R5, R0
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sra R0
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1: ld R1, *RR2
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ex R1, *RR4
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ld *RR4, R1
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inc R3, $2
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inc R5, $2
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djnz R0, 1b
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ldm R4, savereg, $10
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ret
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