History log of /freebsd/libexec/rtld-elf/amd64/rtld_start.S (Results 1 – 25 of 28)
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Revision tags: release/14.0.0
# b3e76948 16-Aug-2023 Warner Losh <imp@FreeBSD.org>

Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/


# 3bdf6808 01-Jul-2023 Dmitry Chagin <dchagin@FreeBSD.org>

rtld: Add a stop indicator to rtld_start to satisfy unwinders on x86_64

The right unwinding stop indicator should be CFI-undefined PC.
https://dwarfstd.org/doc/Dwarf3.pdf - page 118:
If a Return Add

rtld: Add a stop indicator to rtld_start to satisfy unwinders on x86_64

The right unwinding stop indicator should be CFI-undefined PC.
https://dwarfstd.org/doc/Dwarf3.pdf - page 118:
If a Return Address register is defined in the virtual unwind table,
and its rule is undefined (for example, by DW_CFA_undefined), then
there is no return address and no call address, and the virtual
unwind of stack activations is complete.

That is allows gdb and libunwind successfully stop when unwinding stack
from global constructors and destructors.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D40794

show more ...


Revision tags: release/13.2.0, release/12.4.0, release/13.1.0, release/12.3.0, release/13.0.0, release/12.2.0, release/11.4.0, release/12.1.0, release/11.3.0, release/12.0.0, release/11.2.0, release/10.4.0, release/11.1.0
# 721fc9d8 16-Jan-2017 Dimitry Andric <dim@FreeBSD.org>

Merge ^/head r312207 through r312308.


# a61b4567 16-Jan-2017 Enji Cooper <ngie@FreeBSD.org>

MFhead@r312305


# ebf89346 16-Jan-2017 Ed Maste <emaste@FreeBSD.org>

rtld: do not rely on a populated GOT on amd64

On rela architectures GNU BFD ld and gold store the relocation addend
in GOT entries (in addition to the relocation's r_addend field).
rtld previously r

rtld: do not rely on a populated GOT on amd64

On rela architectures GNU BFD ld and gold store the relocation addend
in GOT entries (in addition to the relocation's r_addend field).
rtld previously relied on this to access its own _DYNAMIC symbol in
order to apply its own relocations.

However, recording addends in the GOT is not specified by the ABI,
and some versions of LLVM's LLD linker leave the GOT uninitialized on
rela architectures.

BFD ld does not populate the GOT on sparc64, and sparc64 rtld has a
machine-dependent rtld_dynamic_addr() function that returns the
_DYNAMIC address. Use the same approach on amd64, obtaining the %rip-
relative _DYNAMIC address following a suggestion from Rafael Espíndola.

Architectures other than amd64 should be addressed in future work.

PR: 214972
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D9180

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Revision tags: release/11.0.1, release/11.0.0, release/10.3.0, release/10.2.0
# 416ba5c7 22-Jun-2015 Navdeep Parhar <np@FreeBSD.org>

Catch up with HEAD (r280229-r284686).


# 98e0ffae 27-May-2015 Simon J. Gerraty <sjg@FreeBSD.org>

Merge sync of head


# 7263c8c0 22-Apr-2015 Glen Barber <gjb@FreeBSD.org>

MFH: r280643-r281852

Sponsored by: The FreeBSD Foundation


# 4bf53d0b 04-Apr-2015 Baptiste Daroussin <bapt@FreeBSD.org>

Merge from HEAD


# 0c4f9ecd 29-Mar-2015 Konstantin Belousov <kib@FreeBSD.org>

Change compiler setting to make default visibility of the symbols for
rtld on x86 to be hidden. This is a micro-optimization, which allows
intrinsic references inside rtld to be handled without indi

Change compiler setting to make default visibility of the symbols for
rtld on x86 to be hidden. This is a micro-optimization, which allows
intrinsic references inside rtld to be handled without indirection
through PLT. The visibility of rtld symbols for other objects in the
symbol namespace is controlled by a version script.

Reviewed by: kan, jilles
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks

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Revision tags: release/10.1.0, release/9.3.0
# 6cec9cad 03-Jun-2014 Peter Grehan <grehan@FreeBSD.org>

MFC @ r266724

An SVM update will follow this.


# 3b8f0845 28-Apr-2014 Simon J. Gerraty <sjg@FreeBSD.org>

Merge head


# 84e51a1b 23-Apr-2014 Alan Somers <asomers@FreeBSD.org>

IFC @264767


# 8cc56634 15-Apr-2014 Konstantin Belousov <kib@FreeBSD.org>

Add dwarf annotations to the amd64 _rtld_bind_start to allow debuggers
to unwind around the calls from PLT to binder.

Sponsored by: The FreeBSD Foundation
MFC after: 1 week


Revision tags: release/10.0.0, release/9.2.0, release/8.4.0, release/9.1.0, release/8.3.0_cvs, release/8.3.0
# 8fa0b743 23-Jan-2012 Xin LI <delphij@FreeBSD.org>

IFC @230489 (pending review).


Revision tags: release/9.0.0
# 70d8f36a 27-Oct-2011 Peter Grehan <grehan@FreeBSD.org>

IFC @ r226824


# 36daf049 16-Oct-2011 Eitan Adler <eadler@FreeBSD.org>

- change "is is" to "is" or "it is"
- change "the the" to "the"

Approved by: lstewart
Approved by: sahil (mentor)
MFC after: 3 days


Revision tags: release/7.4.0_cvs, release/8.2.0_cvs, release/7.4.0, release/8.2.0
# 3ad6376e 07-Jan-2011 Konstantin Belousov <kib@FreeBSD.org>

Add section .note.GNU-stack for assembly files used by 386 and amd64.


Revision tags: release/8.1.0_cvs, release/8.1.0, release/7.3.0_cvs, release/7.3.0, release/8.0.0_cvs, release/8.0.0, release/7.2.0_cvs, release/7.2.0, release/7.1.0_cvs, release/7.1.0, release/6.4.0_cvs, release/6.4.0, release/7.0.0_cvs, release/7.0.0, release/6.3.0_cvs, release/6.3.0, release/6.2.0_cvs, release/6.2.0, release/5.5.0_cvs, release/5.5.0, release/6.1.0_cvs, release/6.1.0, release/6.0.0_cvs, release/6.0.0, release/5.4.0_cvs, release/5.4.0, release/4.11.0_cvs, release/4.11.0, release/5.3.0_cvs, release/5.3.0, release/4.10.0_cvs, release/4.10.0
# c707fea1 21-Mar-2004 Peter Wemm <peter@FreeBSD.org>

More stack alignment fixes. Arrange so we call _rtld() in ld-elf.so.1
with the correct alignment. This is important because this calls to
library static constructors are made from here. The bug in

More stack alignment fixes. Arrange so we call _rtld() in ld-elf.so.1
with the correct alignment. This is important because this calls to
library static constructors are made from here. The bug in the old crt*.s
files hid this because in this case, two wrongs do indeed make a right.
Also, call _rtld_bind() with the correct alignment, because it calls back
into the pthread library locking functions. If things happen just
the wrong way, we get a SIG10 due to the broken stack alignment.

show more ...


Revision tags: release/5.2.1_cvs, release/5.2.1, release/5.2.0_cvs, release/5.2.0, release/4.9.0_cvs, release/4.9.0, release/5.1.0_cvs, release/5.1.0
# 9783a12b 24-May-2003 Peter Wemm <peter@FreeBSD.org>

Initial pass at supporting shared libraries on amd64. There are still
a few missing relocation types in amd64/reloc.c, but I have not found
any of them in use yet. :-)

Approved by: re (amd64/* bla

Initial pass at supporting shared libraries on amd64. There are still
a few missing relocation types in amd64/reloc.c, but I have not found
any of them in use yet. :-)

Approved by: re (amd64/* blanket)

show more ...


Revision tags: release/4.8.0_cvs, release/4.8.0, release/5.0.0_cvs, release/5.0.0, release/4.7.0_cvs, release/4.6.2_cvs, release/4.6.2, release/4.6.1, release/4.6.0_cvs, release/4.5.0_cvs, release/4.4.0_cvs, release/4.3.0_cvs, release/4.3.0, release/4.2.0, release/4.1.1_cvs, release/4.1.0, release/3.5.0_cvs, release/4.0.0_cvs, release/3.4.0_cvs, release/3.3.0_cvs
# 7f3dea24 28-Aug-1999 Peter Wemm <peter@FreeBSD.org>

$Id$ -> $FreeBSD$


Revision tags: release/3.2.0, release/3.1.0, release/3.0.0, release/2.2.8
# 13575fc4 04-Sep-1998 Doug Rabson <dfr@FreeBSD.org>

Add alpha support.

Submitted by: John Birrell <jb@cimlogic.com.au> (with extra hacks by me)
Obtained from: Probably NetBSD


Revision tags: release/2.2.7, release/2.2.6
# 3124c3e0 07-Mar-1998 John Polstra <jdp@FreeBSD.org>

Import the ELF dynamic linker. This is the ElfKit version with
quite a few enhancements and bug fixes. There are still some known
deficiencies, but it should be adequate to get us started with ELF.

Import the ELF dynamic linker. This is the ElfKit version with
quite a few enhancements and bug fixes. There are still some known
deficiencies, but it should be adequate to get us started with ELF.

Submitted by: John Polstra <jdp@polstra.com>

show more ...


Revision tags: release/8.1.0_cvs, release/8.1.0, release/7.3.0_cvs, release/7.3.0, release/8.0.0_cvs, release/8.0.0, release/7.2.0_cvs, release/7.2.0, release/7.1.0_cvs, release/7.1.0, release/6.4.0_cvs, release/6.4.0, release/7.0.0_cvs, release/7.0.0, release/6.3.0_cvs, release/6.3.0, release/6.2.0_cvs, release/6.2.0, release/5.5.0_cvs, release/5.5.0, release/6.1.0_cvs, release/6.1.0, release/6.0.0_cvs, release/6.0.0, release/5.4.0_cvs, release/5.4.0, release/4.11.0_cvs, release/4.11.0, release/5.3.0_cvs, release/5.3.0, release/4.10.0_cvs, release/4.10.0
# c707fea1 21-Mar-2004 Peter Wemm <peter@FreeBSD.org>

More stack alignment fixes. Arrange so we call _rtld() in ld-elf.so.1
with the correct alignment. This is important because this calls to
library static constructors are made from here. The bug in

More stack alignment fixes. Arrange so we call _rtld() in ld-elf.so.1
with the correct alignment. This is important because this calls to
library static constructors are made from here. The bug in the old crt*.s
files hid this because in this case, two wrongs do indeed make a right.
Also, call _rtld_bind() with the correct alignment, because it calls back
into the pthread library locking functions. If things happen just
the wrong way, we get a SIG10 due to the broken stack alignment.

show more ...


Revision tags: release/5.2.1_cvs, release/5.2.1, release/5.2.0_cvs, release/5.2.0, release/4.9.0_cvs, release/4.9.0, release/5.1.0_cvs, release/5.1.0
# 9783a12b 24-May-2003 Peter Wemm <peter@FreeBSD.org>

Initial pass at supporting shared libraries on amd64. There are still
a few missing relocation types in amd64/reloc.c, but I have not found
any of them in use yet. :-)

Approved by: re (amd64/* bla

Initial pass at supporting shared libraries on amd64. There are still
a few missing relocation types in amd64/reloc.c, but I have not found
any of them in use yet. :-)

Approved by: re (amd64/* blanket)

show more ...


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