ack/mach/ns/libem/los.s

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ArmAsm
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.define .los
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.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
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.sect .text
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.los:
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movd tos, r3
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movd tos, r0
movd tos, r1
cmpqd 1, r0
beq 1f
cmpqd 2, r0
beq 2f
addd r0, r1
3:
addqd -4, r1
movd 0(r1), tos
acbd -4, r0, 3b
4:
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movd r3, tos
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ret 0
1:
movzbd 0(r1), tos
br 4b
2:
movzwd 0(r1), tos
br 4b