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iocoder
 Post subject: Re: [Solved] OS crashes on paging enable
PostPosted: Sun Jun 04, 2017 9:53 am 
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Joined: Sun Oct 18, 2009 5:47 pm
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Location: Alexandria, Egypt | Ottawa, Canada
BluCode wrote:
It turns out that I didn't set esp and ebp in pm, just sp and bp in real mode. I set them in pm and now all is well, although ebp is slightly lower than I set it to, which is weird. (0x7bf3 instead of 0x7bff).


GCC alters the value of EBP during runtime:

What is the use of “push %ebp; movl %esp, %ebp” generated by GCC for x86?
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BluCode
 Post subject: Re: [Solved] OS crashes on paging enable
PostPosted: Sun Jun 04, 2017 10:05 am 
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I see, that explains it. Thanks for all your help with this.
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