If the kernel is 64-bit and the traced program is 32-bit, you'll want
to change your structure definition so that it reflects the bitness of
the traced program. This means that for pointers you should use a
uint32_t rather than a char * for example.
Adam
On Nov 3, 2008, at 4:44 AM, [EMAIL PROTECTED] wrote:
> Casting it explicitly as "uintptr_t" works for 64 bit program and
> not for 32 bit program.
>
> $CC -xarch=v9 sample.cpp
>
> $dtrace -s sample.d -c ./a.out
> dtrace: script 'sample.d' matched 1 probe
> CProgram: 20 30 ABCD
> dtrace: pid 2974 has exited
> CPU ID FUNCTION:NAME
> 0 47856 __1cEsub16FpnDxxx__v_:entry DTrace: 20 30
> DTrace: name=ABCD
>
>
> $CC sample.cpp
>
> $dtrace -s sample.d -c ./a.out
> dtrace: script 'sample.d' matched 1 probe
> CProgram: 20 30 ABCD
> dtrace: error on enabled probe ID 1 (ID 47856:
> pid2979:a.out:__1cEsub16FpnDxxx__v_:entry): invalid address
> (0x2872800000000) in action #4 at DIF offset 28
> dtrace: pid 2979 has exited
>
>
> $cat sample.d
> struct xxx
> {
> int yyy;
> int zzz;
> const char *name;
> };
>
> pid$target:a.out:*sub1*:entry
> {
> sp = (struct xxx *) copyin (arg0, sizeof (struct xxx));
> printf ("DTrace: %d %d \n", sp->yyy, sp->zzz);
> printf ("DTrace: name=%s\n", copyinstr((uintptr_t)sp->name));
> exit (0);
> }
>
>
>
--
Adam Leventhal, Fishworks http://blogs.sun.com/ahl
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