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Annotation of src/sys/ddb/TODO, Revision 1.11.6.4

1.11.6.4! skrll       1: $NetBSD: TODO,v 1.11.6.3 2004/09/21 13:26:24 skrll Exp $
1.1       jhawk       2:
                      3: In rough order.
                      4:
                      5: Bugs to be fixed:
                      6:
1.3       jhawk       7: done   command history sometimes gets slightly confused
1.1       jhawk       8:
                      9: 2.     uvm_fault()s can loop infinitely (kern/10016)
                     10:
1.7       jmc        11: done   examine /m (hex + character dump) doesn't work.
1.1       jhawk      12:
                     13: 4.     "dot", "next", and "last" are not set properly and are usually
                     14:        the same.
                     15:
1.7       jmc        16: 5.     The vax port supports decimal pids in "kill", etc. This should be
1.1       jhawk      17:        MI or not exist at all.
                     18:
                     19: 6.     double-quote delimitted strings don't work in "print", nor do
                     20:        multiple arguments (like the manpage says)
                     21:
                     22: Features to be implemented:
                     23:
                     24: 1.     Have "ps" print pids with a 0t prefix to reduce radix
1.4       jhawk      25:        confusion. This is very ugly...needs thought.
1.1       jhawk      26:
1.4       jhawk      27: done   "set" should display the old value as "write" does.
1.1       jhawk      28:
                     29: 3.     Support 64-bit longs in "write". /L or /q? both? long versus quad?
                     30:
                     31: 4.     Note only some radixes are supported.
                     32:
                     33: 5.     Allow a mechanism for DDB to not fail under X (on the i386).
1.10      simonb     34:        Probably just skip DDB in such cases.
1.1       jhawk      35:
                     36: 6.     Enable DDB in GENERIC on all architectures not starved for
                     37:        space.
                     38:
1.6       eeh        39: done   Numbers starting with [a-f] should work, but symbols
1.1       jhawk      40:        of the same name should have priority.
                     41:
                     42: 8.     Implement the unimplemented C operators, especially bitwise-OR (|).
                     43:
                     44: 9.     "cond" -- conditionally execute a specified command on a breakpoint.
                     45:        from Mach.
                     46:
                     47: 10.    macros ("macro", "dmacro", "show macro"). from Mach.
                     48:
                     49: 11.    !! command repitition (mostly unnecessary, just for consistency).
                     50:        from Mach.
                     51:
                     52: 12.    "continue" should honor _count as a number of breakpoints to ignore,
                     53:        just as ",5:c" ignores 5 breakpoints in adb.
                     54:
                     55: 13.    There should be a "step over" command (like :e in adb) that sets
                     56:        a breakpoint at the next instruction if the current instruction
                     57:        is a call (or jump?).
                     58:
                     59: 14.    Specification of up to 4 ASCII chars as a 32-bit number
                     60:        in an expression, like ' in adb:
                     61:             'cccc'          ASCII value of up to 4 characters.
                     62:        I'm not sure what character to use for this, if the single-quote
                     63:        is used for ditto, and the double-quote for strings in "print".
                     64:
                     65: 15.    Add crossreference of gdb/ddb commands to manpage. i.e.
                     66:        ddb "next" ~= gdb "finish".
                     67:
                     68: 16.    Correct "ditto" to be a single-quote? Or something else?
                     69:
                     70: 17.    option? To not lose system time when in ddb [reset clock on exit?]
                     71:
                     72: 18.    Consider an XSERVER_DDB option [is it worth it?]
                     73:
                     74: 19.    Eliminate vestigal DDB-specific kprintf() format specifiers
                     75:
                     76: 20.    Figure out what's up with "ed_style"
                     77:
                     78: 21.    Some sort of "immediate" step-in, step-over keybindings, like [
                     79:        and ] in kadb (but not in adb):
                     80:             [           Like :e in adb(1), but requires only  one  keys-
                     81:                         troke and no RETURN character.
1.10      simonb     82:
1.1       jhawk      83:             ]           Like :s in adb(1), but requires only  one  keys-
                     84:                         troke and no RETURN character.
                     85:        Does this make people queasy?
                     86:
                     87: 22.    "search" should display useful output (by default? with /v?)
                     88:        indicating success/failure rather than simply setting "dot".
                     89:        Perhaps verbose by default unless called from a macro (ugh?).
                     90:
                     91: 23.    kern/9544, some symbolic representation of boot flags
                     92:        suitable for documentation (esp. for RB_NOSYNC).
                     93:
                     94: 24.    Soren requests in-band symbol table storage for ddb.
                     95:        "dbsym"? Needs investigation/thought.
                     96:
                     97: 25.    Support multiple address spaces (e.g. io space).
                     98:        Suggested by eeh in <Pine.NEB.4.21.0005250944210.25299-100000@ehorvath>
                     99:
                    100: 26.    Expand help to provide usage/synopsis per-command.
                    101:
                    102: 27.    Ensure MD commands have consistent names and factor out
                    103:        common code.
1.5       jhawk     104:
                    105: 28.    Some way to track symbol table failures, since the message buffer
                    106:        isn't available when we detect them.
1.8       jhawk     107:
                    108: 29.    Make "workXX" variables work.
1.9       jhawk     109:
                    110: 30.    Write ddb(9) to document how ports should implement the debugger,
                    111:        and the canonical solution to some niggling annoying issues.
1.11      scw       112:
                    113: 31.    Add support for cpus where sizeof(register_t) is not necessarily
                    114:        the same as sizeof(void *). This is the case on SH5 using the
1.11.6.1  skrll     115:        ILP32 ABI. On this CPU db_expr_t is, necessarily, 64-bits.
1.11      scw       116:        Unfortunately, in ILP32 mode, ddb will only display the low 32-bits
                    117:        of any expression, including registers...
1.11.6.4! skrll     118:
        !           119: done   Add support for duplicating all ddb output to the message buffer for
        !           120:        those unlucky souls that don't have a serial console.
        !           121: