[Bug translator/10977] New: Getting the address size used in a module

[Bug translator/10977] New: Getting the address size used in a module

[mjw at redhat dot com]

It would be convenient to be able to get the address size used in a module as a
special constant so one doesn't have to add preprocessor trickery.

Maybe something like @address_size which would represent the address_size from
the current Dwarf Compilation Unit header.

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           Summary: Getting the address size used in a module
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mjw at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10977

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[Bug translator/10977] Getting the address size used in a module

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2009-11-18 17:10 -------
If this need not be a compile-time literal/constant, then you could add
something like this into the tapset:

function kernel_arch_bits:long () %{ THIS->__retvalue = (int64_t) sizeof(long); %}


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[Bug translator/10977] Getting the address size used in a module

[mjw at redhat dot com]

------- Additional Comments From mjw at redhat dot com  2009-11-18 18:11 -------
Nice idea. But I need it for the use space module.

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[Bug translator/10977] Getting the address size used in a module

[jistone at redhat dot com]

------- Additional Comments From jistone at redhat dot com  2009-11-18 19:15 -------
How about (probing_32bit_app() ? 4 : 8) ?

That function doesn't yet exist on all archs, but we can make it...

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http://sourceware.org/bugzilla/show_bug.cgi?id=10977

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[Bug translator/10977] Getting the address size used in a module

[mjw at redhat dot com]

------- Additional Comments From mjw at redhat dot com  2009-11-18 20:00 -------
(In reply to comment #3)
> How about (probing_32bit_app() ? 4 : 8) ?
> 
> That function doesn't yet exist on all archs, but we can make it...

O! Didn't know we already had that. Yes, that would definitely be helpful if it
was available on all architectures.

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