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ibzmo 2020-12-20 10:32:11 +00:00
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31
reference/edgecases/sravref.txt
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@ -1,48 +1,43 @@
==SRAV Shift right arithmetic variable == ==SRA Shift right arithmetic ==
srav -2 // Will it be able to handle shifts greater than the highest 1 value sra -3 // Will it be able to handle shifts greater than the highest 1 value
ori $4,$0,6 ori $4,$0,16
ori $5,$0,16 sra $2,$4, 6
srav $2,$5,$4
jr $0 jr $0
ref = 0 ref = 0
34040006 34040010
34050010
00000008 00000008
00851007 00041183
srav - 3 // negative number - does it sign extened (negative) sra- 4 // negative number - does it sign extened (negative)
lui $4, 0xFFFF lui $4, 0xFFFF
ori $4, $4, 0x00FF ori $4, $4, 0x00FF
ori $5, $0, 4 sra $2, $4, 4
srav $2, $4, $5
jr $0 jr $0
ref = FFFFF00F (4294963215 / -4081) ref = FFFFF00F (4294963215 / -4081)
3c04ffff 3c04ffff
348400ff 348400ff
34050004
00000008 00000008
00A41007 00041103
srav - 4 // Does it sign extend 0s
sra - 5 // Does it sign extend 0s
lui $4, 0x0FFF lui $4, 0x0FFF
ori $4, $4, 0x00FF ori $4, $4, 0x00FF
ori $5, $0, 4 sra $2, $4, 4
srav $2, $4, $5
jr $0 jr $0
ref = 00FFF00F (16773135) ref = 00FFF00F (16773135)
3c040fff 3c040fff
348400ff 348400ff
34050004
00000008 00000008
00A41007 00041103