src/libexec/rtld-elf/Makefile, branch release/4.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2000-03-20T08:47:53+00:00

'RELENG_4_0_0_RELEASE'.

This commit was manufactured to restore the state of the 4.0-RELEASE image.
Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.

Add a manual page for the ELF dynamic linker. I initially created

2000-01-29T03:16:54+00:00

rtld.1 by means of a repository copy from "src/libexec/rtld-aout/rtld.1".
Then I edited it to make it (more) accurate for the ELF dynamic
linker.

Add a new function dllockinit() for registering thread locking

1999-12-27T04:44:04+00:00

functions to be used by the dynamic linker.  This can be called by
threads packages at start-up time.  I will add the call to libc_r
soon.

Also add a default locking method that is used up until dllockinit()
is called.  The default method works by blocking SIGVTALRM, SIGPROF,
and SIGALRM in critical sections.  It is based on the observation
that most user-space threads packages implement thread preemption
with one of these signals (usually SIGVTALRM).

The dynamic linker has never been reentrant, but it became less
reentrant in revision 1.34 of "src/libexec/rtld-elf/rtld.c".
Starting with that revision, multiple threads each doing lazy
binding could interfere with each other.  The usual symptom was
that a symbol was falsely reported as undefined at start-up time.
It was rare but not unseen.  This commit fixes it.

$Id$ -> $FreeBSD$

1999-08-28T00:22:10+00:00

Add a MAINTAINER line naming myself. We control the vertical. We

1999-07-09T16:27:43+00:00

control the horizontal.

Eliminate all machine-dependent code from the main source body and

1999-04-09T00:28:43+00:00

the Makefile, and move it down into the architecture-specific
subdirectories.

Eliminate an asm() statement for the i386.

Make the dynamic linker work if it is built as an executable instead
of as a shared library.  See i386/Makefile.inc to find out how to
do it.  Note, this change is not enabled and it might never be
enabled.  But it might be useful in the future.  Building the
dynamic linker as an executable should make it start up faster,
because it won't have any relocations.  But in practice I suspect
the difference is negligible.

- Set the system immutable flag when installing ld.so to avoid people

1999-02-15T05:02:54+00:00

  accidentally clobbering it.

Submitted by:	numberous people on -current

Add alpha support.

1998-09-04T19:03:57+00:00

Submitted by: John Birrell  (with extra hacks by me)
Obtained from: Probably NetBSD

Add "-C" to INSTALLFLAGS to install atomically. An elf->elf

1998-08-17T04:59:15+00:00

installworld dies at this point otherwise, leaving the system
without a dynamic linker.

Add GDB support. The method and some of the code came from NetBSD's elf

1998-04-30T07:48:02+00:00

runtime linker.