[PATCH v3 4/6] Use LWP IDs with ptrace register requests on FreeBSD.

[Pedro Alves]

On 01/18/2016 02:27 AM, John Baldwin wrote:
> This allows gdb to fetch per-thread registers for multi-threaded FreeBSD
> processes.
> 
> Export get_ptrace_pid() from inf-ptrace.c and use it to determine the PID
> to pass to ptrace in pan-BSD native targets.  NetBSD and OpenBSD also accept
> LWP IDs for ptrace requests to fetch per-thread state.
> 
> gdb/ChangeLog:
> 
> 	* amd64bsd-nat.c (amd64bsd_fetch_inferior_registers): Use
> 	get_ptrace_pid.
> 	(amd64bsd_store_inferior_registers): Use get_ptrace_pid.
> 	(amd64bsd_dr_get): Use get_ptrace_pid.
> 	(amd64bsd_dr_set): Use get_ptrace_pid.
> 	* i386bsd-nat.c (i386bsd_fetch_inferior_registers): Use get_ptrace_pid.
> 	(i386bsd_store_inferior_registers): Use get_ptrace_pid.
> 	(i386bsd_dr_get): Use get_ptrace_pid.
> 	(i386bsd_dr_set): Use get_ptrace_pid.
> 	* inf-ptrace.c (get_ptrace_pid): Export.
> 	* inf-ptrace.h (get_ptrace_pid): Declare.
> 	* ppcfbsd-nat.c (ppcfbsd_fetch_inferior_registers): Use lwp id.
> 	(ppcfbsd_store_inferior_registers): Use lwp id.

LGTM.

Thanks,
Pedro Alves