CVS commit: src

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Sat Apr  8 00:25:50 UTC 2017

Modified Files:
        src/sys/arch/amd64/include: ptrace.h
        src/sys/arch/arc/include: ptrace.h
        src/sys/arch/arm/include: ptrace.h
        src/sys/arch/hppa/include: ptrace.h
        src/sys/arch/ia64/include: ptrace.h
        src/sys/arch/m68k/include: ptrace.h
        src/sys/arch/mips/include: ptrace.h
        src/sys/arch/powerpc/include: ptrace.h
        src/sys/arch/sh3/include: ptrace.h
        src/sys/arch/vax/include: ptrace.h
        src/sys/kern: sys_ptrace_common.c
        src/sys/sys: lwp.h
        src/tests/lib/libc/sys: t_ptrace_wait.c

Log Message:
Add new ptrace(2) API: PT_SETSTEP & PT_CLEARSTEP

These operations allow to mark thread as a single-stepping one.

This allows to i.a.:
 - single step and emit a signal (PT_SETSTEP & PT_CONTINUE)
 - single step and trace syscall entry and exit (PT_SETSTEP & PT_SYSCALL)

The former is useful for debuggers like GDB or LLDB. The latter can be used
to singlestep a usermode kernel. These examples don't limit use-cases of
this interface.

Define PT_*STEP only for platforms defining PT_STEP.

Add new ATF tests setstep[1234].

These ptrace(2) operations first appeared in FreeBSD.

Sponsored by <The NetBSD Foundation>


To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/sys/arch/amd64/include/ptrace.h
cvs rdiff -u -r1.4 -r1.5 src/sys/arch/arc/include/ptrace.h
cvs rdiff -u -r1.9 -r1.10 src/sys/arch/arm/include/ptrace.h
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/hppa/include/ptrace.h
cvs rdiff -u -r1.3 -r1.4 src/sys/arch/ia64/include/ptrace.h
cvs rdiff -u -r1.10 -r1.11 src/sys/arch/m68k/include/ptrace.h
cvs rdiff -u -r1.14 -r1.15 src/sys/arch/mips/include/ptrace.h
cvs rdiff -u -r1.12 -r1.13 src/sys/arch/powerpc/include/ptrace.h
cvs rdiff -u -r1.12 -r1.13 src/sys/arch/sh3/include/ptrace.h
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/vax/include/ptrace.h
cvs rdiff -u -r1.20 -r1.21 src/sys/kern/sys_ptrace_common.c
cvs rdiff -u -r1.172 -r1.173 src/sys/sys/lwp.h
cvs rdiff -u -r1.1 -r1.2 src/tests/lib/libc/sys/t_ptrace_wait.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.