Work around a problem somewhere with binutils (?) on arm, hopefully without
breaking any other arch this time.

Fix breakage caused by alphabetically sorting SRCS: rtld_start.S must come first!
The previous version made all shared binaries dump core.

Import arm bits for rtld-elf.

Obtained from: NetBSD

Add initial support for compiling a special 32 bit version of
ld-elf.so.1 on 64 bit systems. Most of this involves using alternate
paths, environment variables and diagnostic messages.

The build gl

Add initial support for compiling a special 32 bit version of
ld-elf.so.1 on 64 bit systems. Most of this involves using alternate
paths, environment variables and diagnostic messages.

The build glue is seperate.

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Retire the WITH_LIBMAP compile knob; libmap is now a standard feature.

Forgot one instance of ld-elf.so.1. Convert to ${PROG}

Pointed out by: obrien

Don't forget to honor DESTDIR. Also switch over to using PROG instead of
the binary name directly.

Don't forget to chflags noschg the existing binary so we can symlink
over it safely.

Pointed out by: yosimoto@waishi.jp

As long threatened, stage 2 of making a dynamically-linked root a reality.
Install rtld into /libexec.

Set CSTD to gnu99. We can only use on of the gnu?9 C languages.
We can't use c89 due to use of 'inline', and c99 produces bad code.

Allow threading libraries to register their own locking
implementation in case default one provided by rtld is
not suitable.

Consolidate various identical MD lock implementation into
a single file u

Allow threading libraries to register their own locking
implementation in case default one provided by rtld is
not suitable.

Consolidate various identical MD lock implementation into
a single file using appropriate machine/atomic.h.

Approved by: re (scottl)

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Dynamic object dependency mapping: libmap.

This is an optional feature, disabled by default.

This will be useful to people testing the various POSIX threading
libraries under -CURRENT but can easil

Dynamic object dependency mapping: libmap.

This is an optional feature, disabled by default.

This will be useful to people testing the various POSIX threading
libraries under -CURRENT but can easily serve other needs.

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Advertize rtld(1) as ld.so(1) in manual pages world

Dillon's recent commits to the dynamic linker without running them
by me first have given me a good excuse to drop my MAINTAINERship.

MFC after: 1 week

Use new backup feature of install(1).

- Backout botched attempt to intoduce MANSECT feature.
- MAN[1-9] -> MAN.

We shouldn't use cp to save the old ld-elf.so.1. Use the sanctioned tool
${INSTALL} with -C -p instead.

When installing the dynamic linker, save the previous version in
"ld-elf.so.1.old". The dynamic linker is a critical component of
the system, and it is difficult to recover if it is damaged and
ther

When installing the dynamic linker, save the previous version in
"ld-elf.so.1.old". The dynamic linker is a critical component of
the system, and it is difficult to recover if it is damaged and
there isn't a working backup available. For instance, parts of
the toolchain such as the assembler are dynamically linked, making
it impossible to build a new dynamic linker if the installed one
doesn't work.

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Fixed missing DPADDs.

Fixed some style bugs (some usual ones for LDADD, and misformatting of
$FreeBSD$).

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

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

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Add a new function dllockinit() for registering thread locking
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
soo

Add a new function dllockinit() for registering thread locking
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.

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$Id$ -> $FreeBSD$

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

Eliminate all machine-dependent code from the main source body and
the Makefile, and move it down into the architecture-specific
subdirectories.

Eliminate an asm() statement for the i386.

Make the

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

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

Submitted by: numberous people on -current