/[gxemul]/trunk/TODO
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 4 by dpavlin, Mon Oct 8 16:18:00 2007 UTC revision 10 by dpavlin, Mon Oct 8 16:18:27 2007 UTC
# Line 1  Line 1 
1  $Id: TODO,v 1.127 2005/04/15 21:39:54 debug Exp $  $Id: TODO,v 1.139 2005/06/23 06:55:43 debug Exp $
2    
3  Here's a short list of what I have left to do on GXemul. This file is a mess.  Here's a short list of what I have left to do on GXemul. This file is a mess.
4  Order is random. Don't trust it to be up-to-date.  Order is random. Don't trust it to be up-to-date.
5    
   
6          Caches / memory hierarchies: (this is mostly MIPS-specific)          Caches / memory hierarchies: (this is mostly MIPS-specific)
7                  o)  MIPS coproc.c: bits in config registers should reflect                  o)  MIPS coproc.c: bits in config registers should reflect
8                      correct cache sizes for _all_ CPU types. (currently only                      correct cache sizes for _all_ CPU types. (currently only
# Line 27  Order is random. Don't trust it to be up Line 26  Order is random. Don't trust it to be up
26          Network layer:          Network layer:
27                  o)  Multiple networks per emulation, and let different                  o)  Multiple networks per emulation, and let different
28                      NICs in machines connect to different networks.                      NICs in machines connect to different networks.
                 o)  Network across multiple hosts.  
                 o)  Fixed MAC addresses for NICs, fixed IPv4 addresses if  
                     DHCP or RARP is used.  
29                  o)  many other issues: see src/net.c                  o)  many other issues: see src/net.c
30    
         Configure script:  
                 o)  Only enable Alpha prefetch on pca56 etc, not on ev4, ev5.  
                 o)  Use getopts?  
                 o)  X11 libs and headers via command line option?  
                 o)  Verify that the configure script, building and running  
                     the emulator works on some platforms:  
                         +)  Irix, AIX, QNX  
                         +)  MacOS X  (I've not tried this personally yet)  
                         +)  Ultrix using gcc? (Inside the emulator)  
   
31          CPU emulation:          CPU emulation:
32                  o)  Binary translation:                  o)  Binary translation:
33                          +)  use an Intermediate Representation!                          +)  use an Intermediate Representation!
# Line 50  Order is random. Don't trust it to be up Line 36  Order is random. Don't trust it to be up
36                          +)  on Alpha: don't assume pca56-like byte load/store?                          +)  on Alpha: don't assume pca56-like byte load/store?
37                          +)  write backends for UltraSparc and MIPS                          +)  write backends for UltraSparc and MIPS
38                          +)  see src/bintrans.c for more info                          +)  see src/bintrans.c for more info
39                    o)  Dynamic-but-not-binary translation?
40                  o)  All the non-MIPS modes need a bit of work.                  o)  All the non-MIPS modes need a bit of work.
41    
42          MIPS CPU emulation:          MIPS CPU emulation:
# Line 94  Order is random. Don't trust it to be up Line 81  Order is random. Don't trust it to be up
81                          +)  Own experiments with ycx2.                          +)  Own experiments with ycx2.
82    
83          Emulation of specific machines and devices:          Emulation of specific machines and devices:
                 o)  Clean up stuff to make it possible to emulate multiple  
                     (different) machines simultaneously.  
84                  o)  Use same clock for all emulations and machines.                  o)  Use same clock for all emulations and machines.
85                  o)  Clean up the device stuff (registering of devices etc)                  o)  Clean up the device stuff (registering of devices etc)
86                  o)  Various SCSI and IDE controllers                  o)  Various SCSI and IDE controllers
# Line 130  Order is random. Don't trust it to be up Line 115  Order is random. Don't trust it to be up
115                          x)  SMP / NUMA?  (SGI and various ARC machines)                          x)  SMP / NUMA?  (SGI and various ARC machines)
116                  o)  Playstation 2:                  o)  Playstation 2:
117                          Hardware:  OHCI usb controller, keyboard, ...                          Hardware:  OHCI usb controller, keyboard, ...
                 o)  Cobalt:  PCI and interrupt system, ethernet,  
                         harddisk controller(s)  
118                  o)  Less interesting platforms:                  o)  Less interesting platforms:
119                          o)  newsmips:                          o)  newsmips:
120                                  o)  NetBSD/newsmips, get it to detect a "real"                                  o)  NetBSD/newsmips, get it to detect a "real"
# Line 143  Order is random. Don't trust it to be up Line 126  Order is random. Don't trust it to be up
126                                  No FPU, but something as coproc 2.                                  No FPU, but something as coproc 2.
127                          o)  Nintendo 64, http://www.nintendo.com/systems/n64/n64_specs.jsp                          o)  Nintendo 64, http://www.nintendo.com/systems/n64/n64_specs.jsp
128                                  (R4300, 4MB RAM, really weird memory map)                                  (R4300, 4MB RAM, really weird memory map)
                 o)  non-MIPS  
129    
130          File/disk handling:          File/disk handling:
                 o)  More than one type of disk in a machine (say, IDE + FLOPPY,  
                     or SCSI + IDE); how to handle this nicely?  
131                  o)  Read function argument count and types from binaries? (ELF?)                  o)  Read function argument count and types from binaries? (ELF?)
                 o)  ELF: separate LE/BE (MIPS instruction format) from LSB/MSB  
                         (ELF structure format)?  
132                  o)  Better handling of tape files                  o)  Better handling of tape files
133    
134          Userland ABI emulation:          Userland ABI emulation:
# Line 159  Order is random. Don't trust it to be up Line 137  Order is random. Don't trust it to be up
137          Terminal based interactive debugger:          Terminal based interactive debugger:
138                  o)  see src/debugger.c                  o)  see src/debugger.c
139    
140          GDB interface? (Maybe not necessary; the built-in debugger feels          Terminal/console stuff:
141          more useful.)                  o)  allow emulated serial ports to be connected to the outside
142                        world in a more generic way, or even to other emulated
143          GUI, interactive debugger?  GTK+?  (The GUI _must be optional_!)                      machines(!)
                 o)  Breakpoints (complex expressions? combinations of register  
                         states, memory accesses and so on)  
                 o)  Instruction trace  
                 o)  Disassembly of RAM (_NOT_ the same as instruction trace)  
                 o)  Function call trace  
                 o)  Inspection of CPU registers/state, coprocessor  
                         registers/state, any device registers/state/contents  
                         o)  Framebuffers in windows / tabs.  
                         o)  Contents of RAM  
                 o)  "Start new emulation" should allow amount of  
                         RAM and nr of cpus to easily be specified.  
                         Multiple simultaneous machines should be possible.  
                 o)  Disk images.  
144    
145          Regression tests:          Regression tests:  (Should be totally rewritten.)
146                  o)  see tests/                  o)  see tests/
147    
148          Save state of the whole emulated machine, to be able to load it back          Save state of the whole emulated machine, to be able to load it back
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