122 lines
4.0 KiB
Plaintext
122 lines
4.0 KiB
Plaintext
$NetBSD: TODO,v 1.17 2005/12/11 12:20:53 christos Exp $
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In rough order.
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Bugs to be fixed:
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done command history sometimes gets slightly confused
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2. uvm_fault()s can loop infinitely (kern/10016)
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done examine /m (hex + character dump) doesn't work.
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4. "dot", "next", and "last" are not set properly and are usually
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the same.
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5. The vax port supports decimal pids in "trace", etc. This should be
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MI or not exist at all.
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6. double-quote delimited strings don't work in "print", nor do
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multiple arguments (like the manpage says)
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Features to be implemented:
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dead Have "ps" print pids with a 0t prefix to reduce radix
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confusion. This is very ugly...needs thought.
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done "set" should display the old value as "write" does.
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3. Support 64-bit longs in "write". /L or /q? both? long versus quad?
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4. Note only some radixes are supported.
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5. Allow a mechanism for DDB to not fail under X (on the i386).
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Probably just skip DDB in such cases.
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6. Enable DDB in GENERIC on all architectures not starved for
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space.
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done Numbers starting with [a-f] should work, but symbols
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of the same name should have priority.
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8. Implement the unimplemented C operators, especially bitwise-OR (|).
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9. "cond" -- conditionally execute a specified command on a breakpoint.
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from Mach.
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10. macros ("macro", "dmacro", "show macro"). from Mach.
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11. !! command repitition (mostly unnecessary, just for consistency).
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from Mach.
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12. "continue" should honor _count as a number of breakpoints to ignore,
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just as ",5:c" ignores 5 breakpoints in adb.
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13. There should be a "step over" command (like :e in adb) that sets
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a breakpoint at the next instruction if the current instruction
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is a call (or jump?).
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14. Specification of up to 4 ASCII chars as a 32-bit number
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in an expression, like ' in adb:
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'cccc' ASCII value of up to 4 characters.
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I'm not sure what character to use for this, if the single-quote
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is used for ditto, and the double-quote for strings in "print".
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15. Add crossreference of gdb/ddb commands to manpage. i.e.
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ddb "next" ~= gdb "finish".
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16. Correct "ditto" to be a single-quote? Or something else?
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17. option? To not lose system time when in ddb [reset clock on exit?]
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18. Consider an XSERVER_DDB option [is it worth it?]
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19. Eliminate vestigal DDB-specific kprintf() format specifiers
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20. Figure out what's up with "ed_style"
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21. Some sort of "immediate" step-in, step-over keybindings, like [
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and ] in kadb (but not in adb):
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[ Like :e in adb(1), but requires only one keys-
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troke and no RETURN character.
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] Like :s in adb(1), but requires only one keys-
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troke and no RETURN character.
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Does this make people queasy?
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22. "search" should display useful output (by default? with /v?)
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indicating success/failure rather than simply setting "dot".
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Perhaps verbose by default unless called from a macro (ugh?).
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23. kern/9544, some symbolic representation of boot flags
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suitable for documentation (esp. for RB_NOSYNC).
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24. Soren requests in-band symbol table storage for ddb.
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"dbsym"? Needs investigation/thought.
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25. Support multiple address spaces (e.g. io space).
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Suggested by eeh in <Pine.NEB.4.21.0005250944210.25299-100000@ehorvath>
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26. Expand help to provide usage/synopsis per-command.
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27. Ensure MD commands have consistent names and factor out
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common code.
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28. Some way to track symbol table failures, since the message buffer
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isn't available when we detect them.
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29. Make "workXX" variables work.
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30. Write ddb(9) to document how ports should implement the debugger,
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and the canonical solution to some niggling annoying issues.
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31. Add support for cpus where sizeof(register_t) is not necessarily
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the same as sizeof(void *). This is the case on SH5 using the
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ILP32 ABI. On this CPU db_expr_t is, necessarily, 64-bits.
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Unfortunately, in ILP32 mode, ddb will only display the low 32-bits
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of any expression, including registers...
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done Add support for duplicating all ddb output to the message buffer for
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those unlucky souls that don't have a serial console.
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