title: What are the meaning of the items in the "alignment trap" error message?
body: <p>During my debugging, I got the following error message.</p>
  <blockquote>
  <p><code>Alignment trap: my_main (29858) PC=0x00170ad8 Instr=0xe5960008 Address=0x00f28daa FSR 0x0f3</code></p>
  </blockquote>
  <p>I've looked around a bit and found a lot of information on this <a href="http://www.rt-embedded.com/blog/archives/resolving-alignment-traps/" rel="nofollow noreferrer"><s>(broken link)</s></a> <a href="https://web.archive.org/web/20140220080000/http://www.rt-embedded.com/blog/archives/resolving-alignment-traps/" rel="nofollow noreferrer">real-time embedded website </a>.
  So now I know what <code>PC</code> and <code>Instr</code> refers to, but I still haven't found anything about the <code>Address</code> and <code>FSR</code> part.</p>
  <p>What is <code>FSR</code>? What address does <code>Address</code> refer to? According to <code>proc/xxxx/maps</code> that address is even outside the scope of my program. Does anybody know what the last two items mean? I need information on these to solve this alignment problem.</p>
  <p>MAP output</p>
  <pre><code>00008000-001fe000 r-xp 00000000 03:02 16204      /home/myuser/my_main
  00205000-00248000 rw-p 001f5000 03:02 16204      /home/myuser/my_main
  00248000-00299000 rwxp 00248000 00:00 0
  40000000-40018000 r-xp 00000000 03:01 2095       /lib/ld-2.3.3.so
  40018000-4001b000 rw-p 40018000 00:00 0
  4001f000-40020000 r--p 00017000 03:01 2095       /lib/ld-2.3.3.so
  40020000-40021000 rw-p 00018000 03:01 2095       /lib/ld-2.3.3.so
  40021000-40023000 r-xp 00000000 03:01 15724      /usr/lib/libem7.so.1.0.1
  40023000-40029000 ---p 00002000 03:01 15724      /usr/lib/libem7.so.1.0.1
  40029000-4002b000 rw-p 00000000 03:01 15724      /usr/lib/libem7.so.1.0.1
  4002b000-40031000 r-xp 00000000 03:01 2057       /lib/tls/librt-2.3.3.so
  40031000-40033000 ---p 00006000 03:01 2057       /lib/tls/librt-2.3.3.so
  40033000-40038000 rw-p 00000000 03:01 2057       /lib/tls/librt-2.3.3.so
  40038000-40039000 r--p 00005000 03:01 2057       /lib/tls/librt-2.3.3.so
  40039000-4003a000 rw-p 00006000 03:01 2057       /lib/tls/librt-2.3.3.so
  4003a000-4004a000 r-xp 00000000 03:01 2060       /lib/tls/libpthread-2.3.3.so
  4004a000-40051000 rw-p 00008000 03:01 2060       /lib/tls/libpthread-2.3.3.so
  40051000-40052000 r--p 0000f000 03:01 2060       /lib/tls/libpthread-2.3.3.so
  40052000-40053000 rw-p 00010000 03:01 2060       /lib/tls/libpthread-2.3.3.so
  40053000-40055000 rw-p 40053000 00:00 0
  40055000-4010e000 r-xp 00000000 03:01 15703      /usr/lib/libstdc++.so.6.0.3
  4010e000-40115000 ---p 000b9000 03:01 15703      /usr/lib/libstdc++.so.6.0.3
  40115000-40119000 rw-p 000b8000 03:01 15703      /usr/lib/libstdc++.so.6.0.3
  40119000-4011f000 rw-p 40119000 00:00 0
  4011f000-401b7000 r-xp 00000000 03:01 2076       /lib/tls/libm-2.3.3.so
  401b7000-401be000 rw-p 00090000 03:01 2076       /lib/tls/libm-2.3.3.so
  401be000-401bf000 r--p 00097000 03:01 2076       /lib/tls/libm-2.3.3.so
  401bf000-401c0000 rw-p 00098000 03:01 2076       /lib/tls/libm-2.3.3.so
  401c0000-401c8000 r-xp 00000000 03:01 2005       /lib/libgcc_s.so.1
  401c8000-401c9000 rw-p 00008000 03:01 2005       /lib/libgcc_s.so.1
  401c9000-402cb000 r-xp 00000000 03:01 2078       /lib/tls/libc-2.3.3.so
  402cb000-402d1000 ---p 00102000 03:01 2078       /lib/tls/libc-2.3.3.so
  402d1000-402d2000 rw-p 00100000 03:01 2078       /lib/tls/libc-2.3.3.so
  402d2000-402d4000 r--p 00101000 03:01 2078       /lib/tls/libc-2.3.3.so
  402d4000-402d6000 rw-p 00103000 03:01 2078       /lib/tls/libc-2.3.3.so
  402d6000-402d8000 rw-p 402d6000 00:00 0
  402d8000-402e5000 rw-s 00000000 00:07 0          /SYSV12345678 (deleted)
  402e5000-402e6000 ---p 402e5000 00:00 0
  402e6000-402f5000 rwxp 402e6000 00:00 0
  403c1000-4049d000 rw-p 403c1000 00:00 0
  7efeb000-7f000000 rwxp 7efeb000 00:00 0
  </code></pre>