[RTEMS Project] #3640: Add support for ucontext.h methods

[RTEMS trac]

#3640: Add support for ucontext.h methods
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  Reporter:  Joel Sherrill  |      Owner:  Needs Funding
      Type:  enhancement    |     Status:  assigned
  Priority:  normal         |  Milestone:  Indefinite
 Component:  posix          |    Version:
  Severity:  normal         |   Keywords:  POSIX-Compliance
Blocked By:                 |   Blocking:
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 The ucontext functionality is technically obsolete from a POSIX standard
 perspective. Unfortunately, there is no comparable functionality left in
 current POSIX standards. Functionality should be based on the last version
 of POSIX this was included in. The implementation will have to be done for
 each architecture.

 API compliance tests exist for these methods. When supported update
 psxtests/Makefile.am

 When this is fixed, see #2832

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Ticket URL: <http://devel.rtems.org/ticket/3640>
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