Re: [Linux-ia64] patching sys_call_table from a module

[Don Dugger <n0ano@valinux.com>]

Chas-

Looking back at your last message I think you are compiling your
module with the wrong flags.  My kernel uses the flag
`-mconstant-gp' which I didn't see in your flags list.  In general,
you must compile your modules with the same flags that were
used to compile the kernel.

On Tue, Jul 03, 2001 at 04:53:56PM -0400, chas williams wrote:
> >where the first element truly points to the function and the second
> >element contains the GP value for the function.
> 
> ok. i see. so i can now set the syscall table to the 'real' location
> for the afs_syscall routine.  however, i still run into trouble
> when invoking the syscall:
> 
> >>IP;  a000000000034250 <[mysyscall].text.end+11/31>   <==> >>b0;  a0000000000340e0 <[mysyscall].text.start+20/40>
> >>b6;  e000000004402f60 <demine_args+0/a0>
> >>b7;  e0000000044157b0 <ia64_switch_to+b0/120>
> Trace; e00000000441a080 <show_stack+40/c0>
> Trace; e00000000441a840 <show_regs+740/780>
> Trace; e00000000442b830 <die_if_kernel+70/140>
> Trace; e000000004443fc0 <ia64_do_page_fault+760/800>
> Trace; e000000004415d00 <ia64_leave_kernel+0/2a0>
> Trace; a000000000034250 <[mysyscall].text.end+11/31>
> Trace; a0000000000340e0 <[mysyscall].text.start+20/40>
> Trace; a0000000000340e0 <[mysyscall].text.start+20/40>
> 
> i suspect that my afs_syscall() is trying to use the 'gp' which is
> probably not setup?
> 
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-- 
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
n0ano@valinux.com
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