[Bug 1001468] eCos GNU tools 4.6.2

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--- Comment #28 from Sergei Gavrikov <sergei.gavrikov@gmail.com> 2012-03-03 19:46:17 GMT ---
At the end I found that bug 49641.  I missed it, because STMIA is THUMB
instruction :-) and I never force such option:

  cdl_option CYGHWR_THUMB {
      user_value 1
  };

Well, is unreal config for me, but:

    CC    ip_input.c
  /tmp/cceuQCd7.s: Assembler messages:
  /tmp/cceuQCd7.s:834: Warning: value stored for r3 is UNKNOWN

disassemble output with objdump:

  /tmp/t/net/bsd_tcpip/current/src/sys/netinet/net_bsd_tcpip_ip_icmp.o:
     6:    c30c          stmia    r3!, {r2, r3}

I checked that GCC 4.6.3 does not produce such error(s) with the same
eCos config.

So, if someone build applications with '-mthumb' then in theory he can
catch the GCC bug #49641 if it was used arm-eabi GCC 4.6.{1,2}.

Thus, IMHO, we have to switch to GCC-4.6.3 code base.

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