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revise do-while assembly to make it clearer

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Thanks to @3p1phany, solves #33
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zhangfuxin
2022-11-20 08:03:46 +00:00
parent 11298b65f4
commit 8a979b5e5c
1 changed files with 11 additions and 12 deletions
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23
materials/chapter2/loop.S
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@@ -23,16 +23,15 @@ test_while:
addi.w $t0,$t0,1 addi.w $t0,$t0,1
b .L2 b .L2
test_dowhile: test_dowhile:
or $t0,$r0,$r0 // a : $a0
or $t3,$r0,$r0 // sum : $t0
.L2: // i : $t1
add.w $t1,$t3,$t0 or $t0,$r0,$r0
addi.w $t2,$t0,1 or $t1,$r0,$r0
or $t3,$t1,$r0 .L1:
or $t0,$t2,$r0 add.w $t0,$t0,$t1
blt $t2,$a0,.L2 addi.w $t1,$t1,1
or $a0,$t1,$r0 blt $t1,$a0,.L1
jr $ra or $a0,$t1,$r0
jr $ra