fbd2c6be23
Remove entries:
- research support PT_SYSCALL & PT_STEP combined like in Linux
- GDB Remote Protocol expects a case with a step with a signal to be sent,
this is currently unsupported on NetBSD
Implemented as PT_SETSTEP and PT_CLEARSTEP.
Remove:
- support QPassSignals (PT_SET_SIGPASS/PT_GET_SIGPASS) in the kernel, a way to
stop routing a set of signals to tracer as they are uninteresting - GDB and
LLDB expect this feature
This interface has been abandoned and will be handled on the debugger level.
Sponsored by <The NetBSD Foundation>
34 lines
1.7 KiB
Plaintext
34 lines
1.7 KiB
Plaintext
$NetBSD: TODO.ptrace,v 1.28 2017/04/08 01:08:36 kamil Exp $
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Items we (currently) plan to finish in the ptrace(2) field:
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- verify ppid of core dump generated with PT_DUMPCORE
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it must point to the real parent, not tracer
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- adapt OpenBSD regress test (regress/sys/ptrace/ptrace.c) for the ATF context
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- reiterate over FreeBSD tests and add missing ones if applicable
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- add PT_DUMPCORE tests in the ATF framework
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- add ATF tests for PT_WRITE_I and PIOD_WRITE_I - test mprotect restrictions
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- add tests for the procfs interface covering all functions available on the
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same level as ptrace(2)
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- remove 4.4BSD tracing with /proc, restrict /proc to Linux compat, to be
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superseded with kevent tracing, the original purpose of /proc debugging is
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long gone (performance issues with PT_WRITE_* and PT_READ_*)
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- research kevent support for tracing a process over a file descriptor,
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this means alternative to wait(2)-based events with passing events over the
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kqueue API - signal handlers are global per application and they clash with
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GUI toolkits (and perhaps other libraries) - this is long term wishlist in
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GDB for Linux - the current approach is to fork and debug through GDB remote
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protocol (this is how it is done in LLDB)
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- add support for PT_STEP, PT_GETREGS, PT_SETREGS, PT_GETFPREGS, PT_SETFPREGS
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in all ports
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- add proper implementation of PTRACE_VFORK for vfork(2)-like events
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- add ATF tests for SIGCHLD
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- fix more calls for netbsd32 compat
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- research ipkdb(4)
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- research kgdb(4)
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- check 64-bit debugger on 64-bit kernel tracing capabilities of 32-bit tracee
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and of course: fix as many bugs as possible.
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Features in ELF, DWARF, CTF, DTrace are out of scope of the above list.
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