2002-01-19  Russell King <rmk@arm.linux.org.uk>	* fpa11.h - Add documentation	          - remove userRegisters pointer from this structure.	          - add new method to obtain integer register values.	* softfloat.c - Remove float128	* softfloat.h - Remove float128	* softfloat-specialize - Remove float128	* The FPA11 structure is not a kernel-specific data structure.	  It is used by users of ptrace to examine the values of the	  floating point registers.  Therefore, any changes to the	  FPA11 structure (size or position of elements contained	  within) have to be well thought out.	* Since 128-bit float requires the FPA11 structure to change	  size, it has been removed.  128-bit float is currently unused,	  and needs various things to be re-worked so that we won't	  overflow the available space in the task structure.	* The changes are designed to break any patch that goes on top	  of this code, so that the authors properly review their changes.1999-08-19  Scott Bambrough  <scottb@netwinder.org>	* fpmodule.c - Changed version number to 0.95	* fpa11.h - modified FPA11, FPREG structures	* fpa11.c - Changes due to FPA11, FPREG structure alterations.	* fpa11_cpdo.c - Changes due to FPA11, FPREG structure alterations.	* fpa11_cpdt.c - Changes due to FPA11, FPREG structure alterations.	* fpa11_cprt.c - Changes due to FPA11, FPREG structure alterations.	* single_cpdo.c - Changes due to FPA11, FPREG structure alterations.	* double_cpdo.c - Changes due to FPA11, FPREG structure alterations.	* extended_cpdo.c - Changes due to FPA11, FPREG structure alterations.	* I discovered several bugs.  First and worst is that the kernel	  passes in a pointer to the FPE's state area.	This is defined	  as a struct user_fp (see user.h).  This pointer was cast to a	  FPA11*.  Unfortunately FPA11 and user_fp are of different sizes;	  user_fp is smaller.  This meant that the FPE scribbled on things	  below its area, which is bad, as the area is in the thread_struct	  embedded in the process task structure.  Thus we were scribbling	  over one of the most important structures in the entire OS.	* user_fp and FPA11 have now been harmonized.  Most of the changes	  in the above code were dereferencing problems due to moving the	  register type out of FPREG, and getting rid of the union variable	  fpvalue.	* Second I noticed resetFPA11 was not always being called for a	  task.  This should happen on the first floating point exception	  that occurs.	It is controlled by init_flag in FPA11.  The	  comment in the code beside init_flag state the kernel guarantees	  this to be zero.  Not so.  I found that the kernel recycles task	  structures, and that recycled ones may not have init_flag zeroed.	  I couldn't even find anything that guarantees it is zeroed when	  when the task structure is initially allocated.  In any case	  I now initialize the entire FPE state in the thread structure to	  zero when allocated and recycled.  See alloc_task_struct() and	  flush_thread() in arch/arm/process.c.  The change to	  alloc_task_struct() may not be necessary, but I left it in for	  completeness (better safe than sorry).1998-11-23  Scott Bambrough  <scottb@netwinder.org>	* README.FPE - fix typo in description of lfm/sfm instructions	* NOTES - Added file to describe known bugs/problems 	* fpmodule.c - Changed version number to 0.941998-11-20  Scott Bambrough  <scottb@netwinder.org>	* README.FPE - fix description of URD, NRM instructions	* TODO - remove URD, NRM instructions from TODO list	* single_cpdo.c - implement URD, NRM	* double_cpdo.c - implement URD, NRM	* extended_cpdo.c - implement URD, NRM1998-11-19  Scott Bambrough  <scottb@netwinder.org>	* ChangeLog - Added this file to track changes made.	* fpa11.c - added code to initialize register types to typeNone	* fpa11_cpdt.c - fixed bug in storeExtended (typeExtended changed to	  typeDouble in switch statement)