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Groups > comp.lang.c > #76247

Re: Parsing a rotated stream of 64 bits

From Tim Rentsch <txr@alumni.caltech.edu>
Newsgroups comp.lang.c
Subject Re: Parsing a rotated stream of 64 bits
Date 2015-11-17 08:42 -0800
Organization A noiseless patient Spider
Message-ID <kfnegfoo9vo.fsf@x-alumni2.alumni.caltech.edu> (permalink)
References (6 earlier) <n1v2og$608$1@dont-email.me> <kfnegfuq9y3.fsf@x-alumni2.alumni.caltech.edu> <n24vll$2g8$1@dont-email.me> <kfn7flkowi4.fsf@x-alumni2.alumni.caltech.edu> <n2b1mb$1c3$1@dont-email.me>

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David Brown <david.brown@hesbynett.no> writes:

> On 15/11/15 02:57, Tim Rentsch wrote:
>> David Brown <david.brown@hesbynett.no> writes:
>>
>>> [snipping a lot]
>
>> Is there by chance an emulator, hopefully one that can report
>> simulated timings?  I'm pretty much flying blind in terms of
>> performance results.
>
> There is an open source AVR simulator, which is probably available
> in your apt-get repositories, and can work with the avr port of
> gdb.  I haven't used it myself.

After I posted I got a reference to simulavr, which is indeed
available using apt-get.  However the apt-get version appears to
be an old one, so I loaded something directly from the simulavr
website. The earlier version didn't work with what I was trying
to do, but the later one did, and it reported a cycle count which
is all I needed.

>> The -mmcu=atmega3250 was the key piece of information I needed
>> (ie, beside knowing about avr-gcc as the compiler to use).  Like
>> I said I ended up using -mmcu=attiny4313, but same diff.  Also in
>> the compiler I got it was -S to generate assembly, but that was
>> no problem since I'm used to it with gcc generally.
>
> "-S" asks gcc to generate an assembly file rather than to run the
> assembler directly, while "-Wa,-ahdl=test.lst" ask it to run the
> assembler but output an assembly listing file (with different
> options for things like macro expansion and other details).  Often
> the difference doesn't matter - but the "-Wa,-ahdl" method is
> neater when you want a listing file in addition to the normal
> object file.

Oh, I tried the "-Wa,-ahdl=test.lst" method, but it didn't
produce anything.  Rather than try to figure out what was
going on I just used -S, which was sufficient for my
purposes.

Thank you again for the help.

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Thread

Parsing a rotated stream of 64 bits pozz <pozzugno@gmail.com> - 2015-10-27 23:54 +0100
  Re: Parsing a rotated stream of 64 bits Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-27 17:37 -0700
  Re: Parsing a rotated stream of 64 bits Bartc <bc@freeuk.com> - 2015-10-28 01:27 +0000
  Re: Parsing a rotated stream of 64 bits Nobody <nobody@nowhere.invalid> - 2015-10-28 05:13 +0000
  Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-10-28 09:17 +0100
    Re: Parsing a rotated stream of 64 bits supercat@casperkitty.com - 2015-10-28 06:22 -0700
      Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-10-28 16:07 +0100
        Re: Parsing a rotated stream of 64 bits supercat@casperkitty.com - 2015-10-28 08:41 -0700
          Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-10-28 23:29 +0100
            Re: Parsing a rotated stream of 64 bits supercat@casperkitty.com - 2015-10-28 17:50 -0700
              Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-10-29 13:56 +0100
          Re: Parsing a rotated stream of 64 bits pozz <pozzugno@gmail.com> - 2015-10-29 09:48 +0100
    Re: Parsing a rotated stream of 64 bits pozz <pozzugno@gmail.com> - 2015-10-29 09:34 +0100
      Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-10-29 13:57 +0100
  Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-10-28 09:21 +0100
  Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-10-28 23:44 -0700
    Re: Parsing a rotated stream of 64 bits pozz <pozzugno@gmail.com> - 2015-10-29 09:28 +0100
      Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-10-30 09:18 -0700
        Re: Parsing a rotated stream of 64 bits pozz <pozzugno@gmail.com> - 2015-11-09 09:27 +0100
          Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-10 14:00 -0800
            Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-11-11 10:48 +0100
              Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-13 05:56 -0800
                Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-11-13 16:32 +0100
                Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-14 17:57 -0800
                Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-11-15 23:43 +0100
                Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-17 08:42 -0800
            Re: Parsing a rotated stream of 64 bits pozz <pozzugno@gmail.com> - 2015-11-13 14:58 +0100
              Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-15 12:02 -0800
                Re: Parsing a rotated stream of 64 bits pozz <pozzugno@gmail.com> - 2015-11-16 10:16 +0100
                Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-17 10:49 -0800
                Re: Parsing a rotated stream of 64 bits David Brown <david.brown@hesbynett.no> - 2015-11-17 23:34 +0100
                Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-20 16:04 -0800
    Re: Parsing a rotated stream of 64 bits Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-29 03:56 -0700
      Re: Parsing a rotated stream of 64 bits Tim Rentsch <txr@alumni.caltech.edu> - 2015-10-30 08:42 -0700
  Parsing a rotated stream of 64 bits asetofsymbols@gmail.com - 2015-11-16 03:03 -0800

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