Clarify thread-localness in the wake of rfork's removal

3 files changed, 28 insertions, 18 deletions

diff --git a/lib/libarch/amd64/amd64_get_fsbase.2 b/lib/libarch/amd64/amd64_get_fsbase.2
index c15c78598e1..73b525e8ab2 100644
--- a/lib/libarch/amd64/amd64_get_fsbase.2
+++ b/lib/libarch/amd64/amd64_get_fsbase.2
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: amd64_get_fsbase.2,v 1.1 2011/04/05 21:14:00 guenther Exp $
+.\"	$OpenBSD: amd64_get_fsbase.2,v 1.2 2012/04/12 14:34:45 guenther Exp $
 .\"	$NetBSD: i386_get_ioperm.2,v 1.3 1996/02/27 22:57:17 jtc Exp $
 .\"
 .\" Copyright (c) 1996 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: April 5 2011 $
+.Dd $Mdocdate: April 12 2012 $
 .Dt AMD64_GET_FSBASE 2 amd64
 .Os
 .Sh NAME
@@ -52,10 +52,11 @@ referenced by
 sets the base address of the %fs segment to the address
 .Fa base .
 .Pp
-When rfork(RFPROC | RFTHREAD) is used, the segment base address
-for the above calls is a per-thread value.
-When a new thread is created,
-it inherits the base from the thread that created it.
+The segment base address is local to each thread.
+The initial thread of a new process inherits its segment base address
+from the parent thread.
+.Fn __tfork
+sets the initial segment base address for threads that it creates.
 .Pp
 .Sy Note:
 Code using the
@@ -81,6 +82,9 @@ will fail if:
 .Fa base
 points outside the process's allocated address space.
 .El
+.Sh SEE ALSO
+.Xr fork 2 ,
+.Xr __tfork 2
 .Sh WARNING
 The ELF Thread-Local Storage ABI reserves %fs for its own use and
 requires that the dynamic linker and thread library set it to
diff --git a/lib/libarch/i386/i386_get_fsbase.2 b/lib/libarch/i386/i386_get_fsbase.2
index 13519f043a1..c0451e8213b 100644
--- a/lib/libarch/i386/i386_get_fsbase.2
+++ b/lib/libarch/i386/i386_get_fsbase.2
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: i386_get_fsbase.2,v 1.1 2011/03/12 04:12:29 guenther Exp $
+.\"	$OpenBSD: i386_get_fsbase.2,v 1.2 2012/04/12 14:34:45 guenther Exp $
 .\"	$NetBSD: i386_get_ioperm.2,v 1.3 1996/02/27 22:57:17 jtc Exp $
 .\"
 .\" Copyright (c) 1996 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: March 12 2011 $
+.Dd $Mdocdate: April 12 2012 $
 .Dt I386_GET_FSBASE 2 i386
 .Os
 .Sh NAME
@@ -53,10 +53,11 @@ sets the base address of the segment that, by default, is referenced
 by %fs to the address
 .Fa base .
 .Pp
-When rfork(RFPROC | RFTHREAD) is used, the segment base address
-for the above calls is a per-thread value.
-When a new thread is created,
-it inherits the base from the thread that created it.
+The segment base address is local to each thread.
+The initial thread of a new process inherits its segment base address
+from the parent thread.
+.Fn __tfork
+sets the initial segment base address for threads that it creates.
 .Pp
 .Sy Note:
 Code using the
@@ -83,6 +84,8 @@ will fail if:
 points outside the process's allocated address space.
 .El
 .Sh SEE ALSO
+.Xr fork 2 ,
+.Xr __tfork 2
 .Rs
 .%A Intel
 .%T i386 Microprocessor Programmer's Reference Manual
diff --git a/lib/libarch/i386/i386_get_gsbase.2 b/lib/libarch/i386/i386_get_gsbase.2
index dfccbdcde02..3db82c63a2d 100644
--- a/lib/libarch/i386/i386_get_gsbase.2
+++ b/lib/libarch/i386/i386_get_gsbase.2
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: i386_get_gsbase.2,v 1.1 2011/03/12 04:12:29 guenther Exp $
+.\"	$OpenBSD: i386_get_gsbase.2,v 1.2 2012/04/12 14:34:45 guenther Exp $
 .\"	$NetBSD: i386_get_ioperm.2,v 1.3 1996/02/27 22:57:17 jtc Exp $
 .\"
 .\" Copyright (c) 1996 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: March 12 2011 $
+.Dd $Mdocdate: April 12 2012 $
 .Dt I386_GET_GSBASE 2 i386
 .Os
 .Sh NAME
@@ -53,10 +53,11 @@ sets the base address of the segment that, by default, is referenced
 by %gs to the address
 .Fa base .
 .Pp
-When rfork(RFPROC | RFTHREAD) is used, the segment base address
-for the above calls is a per-thread value.
-When a new thread is created,
-it inherits the base from the thread that created it.
+The segment base address is local to each thread.
+The initial thread of a new process inherits its segment base address
+from the parent thread.
+.Fn __tfork
+sets the initial segment base address for threads that it creates.
 .Pp
 .Sy Note:
 Code using the
@@ -83,6 +84,8 @@ will fail if:
 points outside the process's allocated address space.
 .El
 .Sh SEE ALSO
+.Xr fork 2 ,
+.Xr __tfork 2
 .Rs
 .%A Intel
 .%T i386 Microprocessor Programmer's Reference Manual