[RTEMS Project] #4076: i386: bad asm in smp mode

[RTEMS trac]

#4076: i386: bad asm in smp mode
---------------------------+--------------------------
  Reporter:  Gedare Bloom  |      Owner:  Gedare Bloom
      Type:  defect        |     Status:  assigned
  Priority:  normal        |  Milestone:  5.1
 Component:  arch/i386     |    Version:  5
  Severity:  normal        |   Keywords:
Blocked By:                |   Blocking:
---------------------------+--------------------------
 A note for me (or someone) to make the fix outlined on the mailing list,
 and apply to the 5 branch.

 > > cpukit/score/cpu/i386/include/rtems/asm.h:157   movb
 > > imps_apic_cpu_map(\REG),\REG        /* CPU ID in REG */
 > >
 > > The assembler is right to complain. movb has to target one of the
 > > 1-byte mnemonics, so this should be %al for the LSB of %eax. One needs
 > > to check through this logic carefully, but I think the right thing to
 > > do here is:
 > > movzbl     imps_apic_cpu_map(\REG),\REG
 > >
 > > That should do the trick. Can you test it locally?
 >
 > Sure! Builds fine and testsuite testing reveals:

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Ticket URL: <http://devel.rtems.org/ticket/4076>
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