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Fix divu testcases and add divu-5 testcase

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Updated the edgecase ref file
This commit is contained in:
jl7719 2020-12-19 05:37:54 +00:00
parent 88eadf4f27
commit 9aa405120f
7 changed files with 50 additions and 41 deletions
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8
inputs/divu/divu-3.instr.txt
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@ -1,7 +1,7 @@
3c04ffff 3c04FFFF
34a4fffc 3484FFFC
3c05ffff 3c05ffff
34a5fffe 34A5FFFE
0085001B 0085001B
00001012 00001010
00000008 00000008

2
inputs/divu/divu-3.ref.txt
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@ -1 +1 @@
2 4294967292

6
inputs/divu/divu-4.instr.txt
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@ -1,6 +1,6 @@
34040004 34040004
3c05ffff 3c05FFFF
34a5fffe 34A5FFFC
0085001B 0085001B
00001012 00001010
00000008 00000008

2
inputs/divu/divu-4.ref.txt
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@ -1 +1 @@
2 4

9
inputs/divu/divu-5.instr.txt Normal file
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@ -0,0 +1,9 @@
3404FF00
3484FF04
340500FF
34A500FF
0085001A
00002010
00002812
00851021
00000008

1
inputs/divu/divu-5.ref.txt Normal file
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@ -0,0 +1 @@
260

63
reference/edgecases/divurefneedsfixing.txt
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@ -20,61 +20,63 @@ ref file = 2
00851021 00851021
00000008 00000008
divu - 3 // -ve/-ve divu - 3 // check if unsigned despite MSB=1
lui $4, $0, 65535 lui $4, $0, 0xFFFF
ori $4, $4, -4 ori $4, $4, 0xFFFC
lui $5, $0, 65535 lui $5, $0, 0xFFFF
ori $5, $0, -2 ori $5, $5, 0xFFFE
divu $4, $5 divu $4, $5
mflo $2 mfhi $2 // look at remainder
jr $0 jr $0
reg file = 2 reg file = 4294967292 (0xFFFFFFFC)
3c04ffff 3c04FFFF
34a4fffc 3484FFFC
3c05ffff 3c05ffff
34a5fffe 34A5FFFE
0085001B 0085001B
00001012 00001010
00000008 00000008
divu - 4 // +ve/-ve divu - 4 // +ve/(-ve value if signed but unsigned div here)
ori $4, $0, 4 ori $4, $0, 0x4
lui $5, $0, 65535 (All 1s 16 bits) lui $5, $0, 0xFFFF
ori $5, $5, -2 ori $5, $5, 0xFFFC
divu $4, $5 divu $4, $5
mflo $2 mfhi $2
jr $0 jr $0
reg file = -2 reg file = 4 (0x4)
34040004 34040004
3c05ffff 3c05FFFF
3405fffe 34A5FFFC
0085001A 0085001B
00001012 00001010
00000008 00000008
divu - 5 // is it seperating quotients & remainders correctly - when dealing with negatives divu - 5 // is it seperating quotients & remainders correctly
ori $4, $0, 4 lui $4, $0, 0xFF00
lui $4, $4, 65535 ori $4, $4, 0xFF04
ori $5, $0, 3 lui $5, $0, 0x00FF
lui $5, $5, 65535 ori $5, $5, 0x00FF
divu $4, $5 divu $4, $5
mfhi $4 mfhi $4
mflo $5 mflo $5
addu $2,$4,$5 addu $2,$4,$5
jr $0 jr $0
ref file = 2 - as we are adding -1 and -1 using addu ref file = 256 (remainder) + 4 (quotient)
34040004 3404FF00
34050003 3484FF04
340500FF
34A500FF
0085001A 0085001A
00002010 00002010
00002812 00002812
@ -85,6 +87,3 @@ ref file = 2 - as we are adding -1 and -1 using addu