ack/mach/mips/libem/bls4.s

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444 B
ArmAsm
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#
.sect .text; .sect .rom; .sect .data; .sect .bss
/* Does a block move of words between non-overlapping buffers.
* Stack: ( src dst len -- )
*/
.sect .text
.define .bls4
.bls4:
lw r4, 0(sp) ! r4=len
lw r5, 4(sp) ! r5=dst
lw r6, 8(sp) ! r6=src
addiu sp, sp, 12
srl r4, r4, 2 ! convert len to words
1:
beq r4, zero, 2f
nop
lw at, 0(r6)
sw at, 0(r5)
addiu r6, r6, 4
addiu r5, r5, 4
addiu r4, r4, -1
b 1b
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nop
2:
jr ra
nop