diff options
Diffstat (limited to 'lib/libc/sys/ptrace.2')
| -rw-r--r-- | lib/libc/sys/ptrace.2 | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/lib/libc/sys/ptrace.2 b/lib/libc/sys/ptrace.2 index 8eb26dd9279b..b8968ebaa3da 100644 --- a/lib/libc/sys/ptrace.2 +++ b/lib/libc/sys/ptrace.2 @@ -2,7 +2,7 @@ .\" $NetBSD: ptrace.2,v 1.2 1995/02/27 12:35:37 cgd Exp $ .\" .\" This file is in the public domain. -.Dd August 29, 2016 +.Dd June 11, 2017 .Dt PTRACE 2 .Os .Sh NAME @@ -643,6 +643,26 @@ and .Fa data arguments are used the same as for .Dv PT_CONTINUE. +.It Dv PT_GET_SC_ARGS +For the thread which is stopped in either +.Dv PL_FLAG_SCE +or +.Dv PL_FLAG_SCX +state, that is, on entry or exit to a syscall, +this request fetches the syscall arguments. +.Pp +The arguments are copied out into the buffer pointed to by the +.Fa addr +pointer, sequentially. +Each syscall argument is stored as the machine word. +Kernel copies out as many arguments as the syscall accepts, +see the +.Va pl_syscall_narg +member of the +.Vt struct ptrace_lwpinfo , +but not more than the +.Fa data +bytes in total are copied. .It Dv PT_FOLLOW_FORK This request controls tracing for new child processes of a traced process. If |