Messages in this thread |  | | Date | Sun, 20 May 2001 23:38:26 +0100 (IST) | From | Dave Airlie <> | Subject | Re: [LV] start_thread question... |
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Okay I think I've gotten it solved most of the way, we weren't calling execve via the system call interface, so once I made it go via the system call and I fill out pc, sp and psl registers in start_thread, it seems to go further..
Thanks for all the help...
Dave.
On Sun, 20 May 2001, Kenn Humborg wrote:
> On Sun, May 20, 2001 at 05:24:48PM +0100, Dave Airlie wrote: > > > > I'm implementing start_thread for the VAX port and am wondering does > > start_thread have to return to load_elf_binary? I'm working on the init > > thread and what is happening is it is returning the whole way back to the > > execve caller .. which I know shouldn't happen..... > > > > so I suppose what I'm looking for is the point where the user space code > > gets control... is it when the registers are set in the start_thread? if > > so how does start_thread return.... > > > > On the VAX we have to call a return from interrupt to get to user space > > and I'm trying to figure out where this should happen... > > I haven't got time to look at this in detail, but you could > probably do it by frobbing the saved registers that will be > restored by the ret_from_syscall in entry.S. Do you have > a pt_regs *regs function argument at the right point? If > so, it should point to these saved registers. > > Later, > Kenn > >
-- David Airlie, Software Engineer http://www.skynet.ie/~airlied / airlied@skynet.ie pam_smb / Linux DecStation / Linux VAX / ILUG person
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