TODO

   1 short term:
   2 ----------
   3 - debug option in 'configure' script + disable -fomit-frame-pointer
   4 - Precise VGA timings for old games/demos (malc patch)
   5 - merge PIC spurious interrupt patch
   6 - merge Solaris patch
   7 - warning for OS/2: must not use 128 MB memory (merge bochs cmos patch ?)
   8 - config file (at least for windows/Mac OS X)
   9 - commit message if execution of code in IO memory
  10 - update doc: PCI infos.
  11 - VNC patch + Synaptic patch.
  12 - basic VGA optimizations
  13 - physical memory cache (reduce qemu-fast address space size to about 32 MB)
  14 - better code fetch (different exception handling + CS.limit support)
  15 - do not resize vga if invalid size.
  16 - avoid looping if only exceptions
  17 - cycle counter for all archs
  18 - TLB code protection support for PPC
  19 - see openMosix Doc
  20 - disable SMC handling for ARM/SPARC/PPC (not finished)
  21 - see undefined flags for BTx insn
  22 - user/kernel PUSHL/POPL in helper.c
  23 - keyboard output buffer filling timing emulation
  24 - return UD exception if LOCK prefix incorrectly used
  25 - test ldt limit < 7 ?
  26 - tests for each target CPU
  27 - fix CCOP optimisation
  28 - fix all remaining thread lock issues (must put TBs in a specific invalid
  29   state, find a solution for tb_flush()).
  30 - fix arm fpu rounding (at least for float->integer conversions)
  31 - SMP support
  32
  33 ppc specific:
  34 ------------
  35 - TLB invalidate not needed if msr_pr changes
  36 - SPR_ENCODE() not useful
  37 - enable shift optimizations ?
  38
  39 lower priority:
  40 --------------
  41 - more friendly BIOS (logo)
  42 - int15 ah=86: use better timing
  43 - suppress shift_mem ops
  44 - fix some 16 bit sp push/pop overflow (pusha/popa, lcall lret)
  45 - optimize FPU operations (evaluate x87 stack pointer statically)
  46 - add IPC syscalls
  47 - use -msoft-float on ARM
  48 - use kernel traps for unaligned accesses on ARM ?
  49 - handle rare page fault cases (in particular if page fault in helpers or
  50   in syscall emulation code).
  51 - fix thread stack freeing (use kernel 2.5.x CLONE_CHILD_CLEARTID)
  52 - more syscalls (in particular all 64 bit ones, IPCs, fix 64 bit
  53   issues, fix 16 bit uid issues)
  54 - use page_unprotect_range in every suitable syscall to handle all
  55   cases of self modifying code.
  56 - use gcc as a backend to generate better code (easy to do by using
  57   op-i386.c operations as local inline functions).