[Bug binutils/31096] nm for mips32 (native or cross-compiled) shows 32bit addresses as sign-extended 64bit addresses

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31096

Nick Clifton <nickc at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |nickc at redhat dot com

--- Comment #1 from Nick Clifton <nickc at redhat dot com> ---
Hi Nicolas,

  This is actually expected behaviour.

  The MIPS architecture uses a signed address space, and tools configured to
support the MIPS are aware of this.  Hence the mips-linux-gnu-nm tool displays
a signed address.  Some tools however can be used on architectures for which
they were not configured.  Nm is one of these tools.  So if you use
x86_64-linux-gnu-nm on a MIPS binary, it will be able to display the symbols,
but it will display their addresses as unsigned values, since that is how the
x86_64 architecture treats its addresses.

  Basically if you want to discover information about MIPS binaries, use tools
that are configured to support the MIPS architecture.

  Note - it is still possible to use cross tools, they just need to support the
MIPS.  So for example if you build the binutils on an x86_64 host and use the
"--enable-targets=all" configure option, then they will be able to correctly
handle MIPS binaries, as well as x86_64 binaries and indeed most other
architectures as well.

  Does this make sense ?

Cheers
  Nick

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