$NetBSD: TODO.ptrace,v 1.20 2017/02/13 15:29:18 kamil Exp $ Items we (currently) plan to finish in the ptrace(2) field: - verify ppid of core dump generated with PT_DUMPCORE it must point to the real parent, not tracer - adapt OpenBSD regress test (regress/sys/ptrace/ptrace.c) for the ATF context - reiterate over FreeBSD tests and add missing ones if applicable - add new ptrace(2) calls to lock (suspend) and unlock LWP within a process - add PT_DUMPCORE tests in the ATF framework - add ATF tests for PT_WRITE_I and PIOD_WRITE_I - test mprotect restrictions - switch PT_WATCHPOINT* to PT_*ETDBREGS and document it, add ATF tests - add tests for the procfs interface covering all functions available on the same level as ptrace(2) - remove 4.4BSD tracing with /proc, restrict /proc to Linux compat, to be superseded with kevent tracing, the original purpose of /proc debugging is long gone (performance issues with PT_WRITE_* and PT_READ_*) - research kevent support for tracing a process over a file descriptor, this means alternative to wait(2)-based events with passing events over the kqueue API - signal handlers are global per application and they clash with GUI toolkits (and perhaps other libraries) - this is long term wishlist in GDB for Linux - the current approach is to fork and debug through GDB remote protocol (this is how it is done in LLDB) - add support for PT_STEP, PT_GETREGS, PT_SETREGS, PT_GETFPREGS, PT_SETFPREGS in all ports - add proper implementation of PTRACE_VFORK for vfork(2)-like events - add ATF tests for SIGCHLD - add si_code values for PT_SYSCALL: TRAP_SCE and TRAP_SCX - add ATF tests for PT_SYSCALL and PT_SYSCALLEMU - research support PT_SYSCALL & PT_STEP combined like in Linux - fix more calls for netbsd32 compat and of course: fix as many bugs as possible. Features in ELF, DWARF, CTF, DTrace are out of scope of the above list.