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Re: Met Problem on Enable SystemTap on Android
Hi,
I recompile the kernel with cross-compiler "arm-none-linux-gnueabi-"
and "make ARCH=arm"
Now, I can get "helloworld.ko" from "helloworld.stp", however, when I
try to cross-compile "syscall_by_pid.stp", I got the following error
message:
./stap -c -gv -a arm -D OMAP_L25 -B
CROSS_COMPILE=~/Downloads/arm-2010q1/bin/arm-none-linux-gnueabi- -r
/home/lwan1/WORKING_DIRECTORY/kernel_1 -I
/data/systemtap-1.5-macharm/share/systemtap/tapset/ -R
/data/systemtap-1.5-macharm/share/systemtap/runtime/ -m
syscalls_by_pid ~/Downloads/syscalls_by_pid.stp -c "sleep 0.2"
WARNING: kernel release/architecture mismatch with host forces last-pass 4.
semantic error: unresolved arity-4 function: identifier
'_arch_ptrace_argstr' at
/data/systemtap-1.5-ubuntu/share/systemtap/tapset/aux_syscalls.stp:2234:9
??????? source: ??? retval=_arch_ptrace_argstr(request, pid, addr, data)
??????????????? ??? ?????? ^
Pass 2: analysis failed.? Try again with another '--vp 01' option.
I thought it was the problem of the tapset, so I reinstalled the
systemtap, but the problem is still there.
Any hint would be welcome.
Thanks.
Yours
Sincerely
2011/9/1 Turgis, Frederic <f-turgis@ti.com>
>
> >I tried to cross-compile the syscall_by_pid.stp
>
> There is an error at Pass1 => semantic error: ELF machine |x86_64 (code 62) mismatch with target arm in '/home/lwan1/WORKING_DIRECTORY/kernel/vmlinux' => it means you want to go for an ARM arch but your kernel has been compiled for x86_64. Try "file xxx/vmlinux", it will confirm.
>
> Have you compiled it yourself ? You then forgot the ARCH=arm and CROSS_COMPILE=arm-none-gnuxxxxx variables
>
>
> >So I tried the most simple script helloworld.stp, but it still
> >does not work.
>
> It is quite the same. It will try to compile for an ARM arch with kernel configuration set for x86_64. Therefore compilation flags interact in weird manner with headers.
>
>
> By the way, we use a 2010 toolchain or more recent, 2008 is quite old but shall still work.
> Texas Instruments France SA, 821 Avenue Jack Kilby, 06270 Villeneuve Loubet. 036 420 040 R.C.S Antibes. Capital de EUR 753.920
>
>
>