CVS commit: src

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

Module Name:    src
Committed By:   kamil
Date:           Tue Dec 24 14:51:00 UTC 2019

Modified Files:
        src/external/gpl3/gdb/dist/gdb: nbsd-nat.c
        src/sys/arch/alpha/include: ptrace.h
        src/sys/arch/hppa/include: ptrace.h
        src/sys/arch/powerpc/include: ptrace.h
        src/sys/arch/sh3/include: ptrace.h
        src/sys/arch/sparc/include: ptrace.h
        src/sys/compat/netbsd32: netbsd32.h netbsd32_ptrace.c
        src/sys/kern: core_elf32.c sys_ptrace.c sys_ptrace_common.c
        src/sys/sys: ptrace.h
        src/tests/lib/libc/sys: t_ptrace_wait.c

Log Message:
Introduce PT_LWPSTATUS + PT_LWPNEXT, obsolete PT_LWPINFO

PT_LWPINFO is a legacy ptrace(2) operation that was originally intended
to retrieve the thread (LWP) information inside a traced process.

It has a number of flaws and is confused with PT_LWPINFO from FreeBSD.

PT_LWPSTATUS and PT_LWPNEXT address the problems (shortly by: rename,
removal of pl_event) and introduces new features: signal context
(pl_sigpend, pl_sigmask), LWP name (pl_name), LWP TLS base address
(pl_private). The private pointer was so far missing information for
a debugger.

PT_LWPSTATUS@nnn is now shipped with core(5) files and contain LWP specific
information, so far missed in the core(5) files.

PT_LWPSTATUS retrieves LWP information for the prompted thread.
PT_LWPNEXT retrieves LWP information for the next thread, borrowing the
semantics from NetBSD specific PT_LWPINFO.

PT_LWPINFO is namespaced with __LEGACY_PT_LWPINFO and still available for
the foreseeable future, without plans of removing it.

Add ATF tests for PT_LWPSTATUS + PT_LWPNEXT.

Keep ATF tests for PT_LWPINFO.

Switch GDB to new API.

Proposed on tech-kern@.


To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/external/gpl3/gdb/dist/gdb/nbsd-nat.c
cvs rdiff -u -r1.10 -r1.11 src/sys/arch/alpha/include/ptrace.h
cvs rdiff -u -r1.9 -r1.10 src/sys/arch/hppa/include/ptrace.h
cvs rdiff -u -r1.15 -r1.16 src/sys/arch/powerpc/include/ptrace.h
cvs rdiff -u -r1.16 -r1.17 src/sys/arch/sh3/include/ptrace.h
cvs rdiff -u -r1.14 -r1.15 src/sys/arch/sparc/include/ptrace.h
cvs rdiff -u -r1.131 -r1.132 src/sys/compat/netbsd32/netbsd32.h
cvs rdiff -u -r1.7 -r1.8 src/sys/compat/netbsd32/netbsd32_ptrace.c
cvs rdiff -u -r1.60 -r1.61 src/sys/kern/core_elf32.c
cvs rdiff -u -r1.5 -r1.6 src/sys/kern/sys_ptrace.c
cvs rdiff -u -r1.73 -r1.74 src/sys/kern/sys_ptrace_common.c
cvs rdiff -u -r1.67 -r1.68 src/sys/sys/ptrace.h
cvs rdiff -u -r1.142 -r1.143 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.