process swtich in x86 real mode how to save/restore ss:esp

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descent
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process swtich in x86 real mode how to save/restore ss:esp

Post by descent »

I write a process switch in dos, it can work switch proc_a, proc_b, but I don't know how to save/restore ss:esp. In protected mode, iret/int will save/restore ss:esp in different privilege.

my code:
https://github.com/descent/process/blob ... /process.S

Any suggestions are welcome.
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Combuster
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Re: process swtich in x86 real mode how to save/restore ss:e

Post by Combuster »

Think about how you save all the other (segment) registers.
"Certainly avoid yourself. He is a newbie and might not realize it. You'll hate his code deeply a few years down the road." - Sortie
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