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by xenadu02 3505 days ago
I thought Linux uses sysenter/sysexit, not int 0x80/iret?

Still a good tutorial; there is no magic, it's all just software.
2 comments
conductor 3505 days ago
You are right, Linux uses INT 0x80 on x86 only when the SYSCALL/SYSENTER and SYSRET/SYSEXIT instructions are not available.
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brenns10 3505 days ago
Yes, I have a few inaccuracies I'm correcting right now. That is one of them.
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