cvs commit: src/sys/ia64/ia64 trap.c

[Marcel Moolenaar]

marcel      2007-05-21 05:11:43 UTC

  FreeBSD src repository

  Modified files:
    sys/ia64/ia64        trap.c 
  Log:
  When speculation fails (as determined by the chk instruction) the
  processor is to jump to recovery code. This branching behaviour
  may not be implemented by the processor and a Speculative Operation
  fault is raised. The OS is responsible to emulate the branch.
  Implement this, because GCC 4.2 uses advanced loads regularly.
  
  Revision  Changes    Path
  1.127     +13 -1     src/sys/ia64/ia64/trap.c