ack/mach/z8000/libem/sar.s

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ArmAsm
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1985-01-08 11:48:43 +00:00
.define sar
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.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
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!R1 contains description address
!R3 contains element number
!base address is on stack
sar:
popl saveret, *RR14
sub R3, 0(R1)
ld R0, 4(R1) !nr of bytes per element
mult RR2, R0
add R3, *RR14
inc R15, $2
sra R0 !nr of words per element
jr EQ, 1f
ldir *RR2, *RR14, R0
jr 2f
1: pop R1, *RR14
ldb *RR2, RL1
2: ldl RR2, saveret
jp *RR2