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    <div class="moz-cite-prefix">On 9/23/2013 1:45 AM, Eli Friedman
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAJdarcFZd-P+pQXsQ_jwLbrY3LDHjiCHULN8c67ypRgx7ibXHQ@mail.gmail.com"
      type="cite">
      <div dir="ltr">On Sun, Sep 22, 2013 at 9:43 PM, Shankar Easwaran <span
          dir="ltr"><<a moz-do-not-send="true"
            href="mailto:shankare@codeaurora.org" target="_blank">shankare@codeaurora.org</a>></span>
        wrote:<br>
        <div class="gmail_extra">
          <div class="gmail_quote">
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div alink="#EE0000" bgcolor="#ffffff" link="#0B6CDA"
                text="#000000" vlink="#551A8B"> Hi Eli,<br>
                <br>
                Slightly changed the example :-<br>
                <br>
                .section somedata<br>
                .Ltmpa:<br>
                .word 100<br>
                .Ltmpb:<br>
                .word 60<br>
                .Ltmpc:<br>
                .word 40<br>
                .Ltmpd:<br>
                .word   (.Ltmpa-.Ltmpb)-.Ltmpc<br>
                <br>
                The GNU assembler properly handles the above.<br>
                <br>
                $as -c x.s -o x.o<br>
                $readelf -x 4 x.o<br>
                <br>
                Hex dump of section 'somedata':<br>
                 NOTE: This section has relocations against it, but
                these have NOT been applied to this dump.<br>
                  0x00000000 64003c00 28000000                  
                d.<.(...<br>
                                                                     <font
                  color="#ff0000">^^^^ (Calculated properly too!)</font><br>
                With clang/llvm-mc <br>
                <br>
                $ llvm-mc -filetype=obj x.s -o x.o
                <div class="im"><br>
                  LLVM ERROR: expected relocatable expression<br>
                  <br>
                </div>
                Looks like llvm-mc is more restrictive ?<br>
                <br>
                <br>
              </div>
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            <div><br>
            </div>
            <div>Emitting the relocation in question requires *negating*
              the address of a variable.  I could be wrong, but I'm
              pretty sure there isn't any way to represent that in ELF.<br>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    Sorry for not setting context here. These variables are all local
    variables, is there a need to create a relocation ?<br>
    <br>
    Thanks<br>
    <br>
    Shankar Easwaran<br>
    <pre class="moz-signature" cols="72">-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation</pre>
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