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From: "chrisj at rtems dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug sim/13160] bfin simulator does not build on Darwin
Date: Tue, 10 Mar 2015 05:42:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=13160

--- Comment #6 from Chris Johns <chrisj at rtems dot org> ---
(In reply to Mike Frysinger from comment #5)
> (In reply to Chris Johns from comment #4)
> 
> my guess is you're copying & pasting the command from your terminal and that
> isn't preserving the tabs.  instead you're pasting a command that uses
> spaces.  

Nice guess. Using C-v<tab> worked.

> you want something like:
> bfin-elf-objdump -d -z linux-fixed-code.o | \
>   sed -n -e 's:^[^\t]*\t:0x:' -e '/^0x/{s:\t.*::;s: *$:,:;s: :, 0x:g;p}'

I think \t is a GNU extension.

> i don't know why that's failing as, afaict, the code is POSIX compliant. 
> maybe Darwin has a crappy implementation ?  i've tried `sed --posix` and
> `minised` and `busybox sed` and they all work (well, almost ... minised
> doesn't handle tabs correctly).

The sed looks similar to FreeBSD. It also fails in the same way.

> 
> maybe it can't handle a nested print ?  what if you combine it with the s:
> bfin-elf-objdump -d -z linux-fixed-code.o | \
>   sed -n -e 's:^[^\t]*\t:0x:' -e '/^0x/{s:\t.*::;s: *$:,:;s: :, 0x:gp}'
> 
> if that still fails, try unrolling it:
> bfin-elf-objdump -d -z linux-fixed-code.o | \
>   sed -n -e 's:^[^\t]*\t:0x:' -e '/^0x/{s:\t.*::;s: *$:,:;s: :, 0x:g;
> p
> }'

Ah ok, thanks for posting this. The following seems this works on MacOS and
FreeBSD ...

sed -n -e 's:^[^      ]*      :0x:' -e '/^0x/{s:      .*::;s: *$:,:g;p;}'
../../../binutils-gdb/sim/bfin/linux-fixed-code.h.dis 

This is with <tab> characters and a ';' after the 'p'.

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