Looped rebooting OS

[Joe Barrett]

I'm in the process of setting up user memory mapping (yes I'm far
behind, I've had the flu for the last week) and I think I've got
everything set up properly in Load_User_Program & Create_User_Context,
but when I run the OS, it reboots itself right after it finishes calling
Start_User_Program in Spawn().

Has anyone else run into this problem and found a solution?

Thanks,
Joe

[Iulian Neamtiu]

You mean it bochs enters an endless loop where it starts GeekOS up to
spawning the shell and then reboots and soo on ? That's very strange.

Does
$ cat bochs.out
report anything meaningful ?

Iulian

Post by Joe Barrett
I'm in the process of setting up user memory mapping (yes I'm far
behind, I've had the flu for the last week) and I think I've got
everything set up properly in Load_User_Program & Create_User_Context,
but when I run the OS, it reboots itself right after it finishes calling
Start_User_Program in Spawn().
Has anyone else run into this problem and found a solution?
Thanks,
Joe

[Joe Barrett]

I've got my Load_User_Program set up so that, while it's running through
each segment, it creates the page table entry [using Create_PT_Entry],
allocates the necessary page using Alloc_Pageable_Page( [created PT
entry], USER_VM_START + segmentStart + [specific page] ) and then I
memcpy the data into it.

However, the OS still reboots right after it launches the shell - and
bochs.out contains this:

00010316975e[HD ] device set to 1 which does not exist
00018098155e[HD ] device set to 1 which does not exist
00018098221e[HD ] device set to 1 which does not exist
00019295010e[CPU ] exception(): 3rd (14) exception with no resolution,
shutdown status is 00h, resetting

I'm not exactly sure what that means, except that it can't be good.
Does anyone have advice?

Thanks,
Joe