Commits on Oct 31, 2014

1. Reorganize faulting stuff. Differentiate between arch- and OS-specifi… …

   …c defines.
   
   - Get rid of ArmMemTools.cpp and rename x64MemTools.cpp to MemTools.cpp.
     ArmMemTools was almost identical to the POSIX part of x64MemTools, and
     the two differences, (a) lack of sigaltstack, which I added to the
     latter recently, and (b) use of r10 to determine the fault address
     instead of info->si_addr (meaning it only works for specifically
     formatted JIT code), I don't think are necessary.  (Plus Android, see
     below.)
   
   - Rename Core/PowerPC/JitCommon/JitBackpatch.h to Core/MachineContext.h.
     It doesn't contain anything JIT-specific anymore, and e.g. locking
     will want to use faulting support regardless of whether any JIT is in
     use.
   
   - Get rid of different definitions of SContext for different
     architectures under __linux__, since this is POSIX.  The exception is
     of course Android being shitty; I moved the workaround definition from
     ArmMemTools.cpp to here.
   
   - Get rid of #ifdefs around EMM::InstallExceptionHandler and just
     provide an empty implementation for unsupported systems (i.e.
     _M_GENERIC really).  Added const bool g_exception_handlers_supported
     for future use; currently exception handlers are only used by the JIT,
     whose use implies non-M_GENERIC, but locking will change that.
   
   - Remove an unnecessary typedef.

   

   comex committed Oct 31, 2014
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