cvs commit: src/sys/amd64/amd64 exception.S

[Peter Wemm]

peter       2005-05-21 00:02:13 UTC

  FreeBSD src repository

  Modified files:
    sys/amd64/amd64      exception.S 
  Log:
  For non-profiling kernels, there were two symbols assigned to the same
  address.  One was alltraps_with_regs_pushed, the other was calltrap.
  
  When the stack tracer walks up, it looks for magic symbol names to
  determine how to parse non-standard stack frames, such as a trapframe.
  It was looking for "calltrap".  Which of the two symbols you got depended
  on things like Phase of moon, etc.  If you were unlucky, you got a
  garbage stack trace for things like 'debug.trace_on_panic', which would
  completely hide the actual source of the problem.
  
  Revision  Changes    Path
  1.122     +4 -2      src/sys/amd64/amd64/exception.S