Archipelago » qemu

short term:

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- physical memory cache (reduce qemu-fast address space size to about 32 MB)

- better code fetch (different exception handling + CS.limit support)

- do not resize vga if invalid size.

- avoid looping if only exceptions

- handle fast timers + add explicit clocks

- cycle counter for all archs

- TLB code protection support for PPC

- add sysenter/sysexit and fxsr for L4 pistachio 686

- basic VGA optimizations

- disable SMC handling for ARM/SPARC/PPC (not finished)

- see undefined flags for BTx insn

- user/kernel PUSHL/POPL in helper.c

- keyboard output buffer filling timing emulation

- return UD exception if LOCK prefix incorrectly used

- test ldt limit < 7 ?

- tests for each target CPU

- fix CCOP optimisation

- fix all remaining thread lock issues (must put TBs in a specific invalid

  state, find a solution for tb_flush()).

- fix arm fpu rounding (at least for float->integer conversions)

- SMP support

lower priority:

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- HDD geometry in CMOS (not used except for very old DOS programs)

- suppress shift_mem ops

- fix some 16 bit sp push/pop overflow (pusha/popa, lcall lret)

- sysenter/sysexit emulation

- optimize FPU operations (evaluate x87 stack pointer statically)

- add IPC syscalls

- use -msoft-float on ARM

- use kernel traps for unaligned accesses on ARM ?

- handle rare page fault cases (in particular if page fault in heplers or

  in syscall emulation code).

- fix thread stack freeing (use kernel 2.5.x CLONE_CHILD_CLEARTID)

- more syscalls (in particular all 64 bit ones, IPCs, fix 64 bit

  issues, fix 16 bit uid issues)

- use page_unprotect_range in every suitable syscall to handle all

  cases of self modifying code.

- use gcc as a backend to generate better code (easy to do by using

  op-i386.c operations as local inline functions).

- add SSE2/MMX operations