SPIM MIPS32 simulator warning: Error: MIPS32 Rev 2 instruction is not implemented.

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tevian

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Hello!

I have generated an assembly file for AES encryption using MIPS32 compiler.
When I use SPIM simulator it gives me the following error:
spim: (parser) Warning: MIPS32 Rev 2 instruction is not implemented. Instruction ignored. on line 712 of file AES_main.s
seb $3,$2

I understand it has something to do with seb, but I am not sure what is the workaround to avoid this.

Hoping to hear some suggestions soon!

TIA

Tevian
 

If you are using gcc -march=mips32 should prevent compiler from generating mips32r2 instructions.
 

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