ack/mach/vax4/libem/xor.s

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.sect .text; .sect .rom; .sect .data; .sect .bss; .sect .text
.define .xor
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! $Header$
! bytes in r0
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.xor:
movl (sp)+,r2
addl3 r0,sp,r1
ashl $-2,r0,r0
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I1:
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xorl2 (sp)+,(r1)+
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sobgtr r0,I1
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jmp (r2)