Hi Liyuchao, I'm assuming you are referring to ARM ISA... BTI is appearing on your code but it's not implemented.
"A BTI instruction is used to guard against the execution of instructions that are not the intended target of a branch. Outside of a guarded memory region, a BTI instruction executes as a NOP. " (See here: https://developer.arm.com/documentation/100076/0100/a64-instruction-set-reference/a64-general-instructions/bti) My understanding is that if you are not trying to investigate how this guarding mechanism works (say, because you are investigating hardware security or whatever), you can simply ignore that instruction as if your code is outside of a guarded memory region. So in src/arch/arm/isa/formats/aarch64.isa you can find the bti instruction and return a NOP instead of an unimplemented instruction. Something like this: - return new WarnUnimplemented("bti", machInst); + return new NopInst(machInst); Recompile gem5 and check if it does the trick. _______________________________________________ gem5-users mailing list -- gem5-users@gem5.org To unsubscribe send an email to gem5-users-le...@gem5.org %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
