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(lemmy.world)
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this post was submitted on 21 May 2024
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return from subroutine, int3 would be something relating to interrupts off the top of my head.Int3 is a special single-byte (CC, if I recall correctly) form of the INT instruction (which is CD imm8, I think) to raise an interrupt. Interrupt #3 is the debugging interrupt, so by overwriting any instruction with CC, you place a breakpoint there.