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It's not a theoretical consideration. It's quite common for BIOS and firmware code to clobber registers that it isn't supposed to; see the code I mentioned in t
by JoshTriplett 6y ago
It's not a theoretical consideration. It's quite common for BIOS and firmware code to clobber registers that it isn't supposed to; see the code I mentioned in the Linux kernel, which arose through real-world bugs that were incredibly hard to debug.
- josephcsible 6y agoBut where do you draw the line? What if it clobbers the stack pointer?
- JoshTriplett 6y agoThen it won't be able to return at all, and people will notice more quickly.