src/lib/csu/common, branch main FreeBSD source tree csu: Remove unused constant 2026-01-13T15:19:04+00:00 John Baldwin jhb@FreeBSD.org 2026-01-13T15:19:04+00:00 113dc9ed98874d15f4f43287dcb6d0f59633b19b This is no longer used after commit 99282790b7d01ec3c4072621d46a0d7302517ad4 moved ELF notes from C to assembly. Reviewed by: kib Fixes: 99282790b7d0 ("Remove the sed hack for ABI tag notes.") Sponsored by: AFRL, DARPA Differential Revision: https://reviews.freebsd.org/D54506 
This is no longer used after commit
99282790b7d01ec3c4072621d46a0d7302517ad4 moved ELF notes from C to
assembly.

Reviewed by:	kib
Fixes:		99282790b7d0 ("Remove the sed hack for ABI tag notes.")
Sponsored by:	AFRL, DARPA
Differential Revision:	https://reviews.freebsd.org/D54506
csu: drop support for GCJ 2025-04-18T18:59:19+00:00 Brooks Davis brooks@FreeBSD.org 2025-04-18T18:49:01+00:00 a60615d5be83ca050d4ddfbbb4411ca7a8a11486 Remove .jcr sections and related infrastructure. This has no impact on existing binaries and the toolchain remains capability of linking them, but would require different (or additional) csu files. GCC removed GCJ from trunk in on September 30, 2016. Our support came in with D17587 for compatibility with old object files. It was roughly contemporaneous with GCC 6.5, the last release with GCJ support. At this point we don't even have a compiler port capable of producing GCJ binaries so there is no need to carry this around any more. For reference see: https://en.wikipedia.org/wiki/GNU_Compiler_for_Java#History Reviewed by: kib, emaste Discussed with: imp Sponsored by: SRI International Differential Revision: https://reviews.freebsd.org/D49882 
Remove .jcr sections and related infrastructure.  This has no impact on
existing binaries and the toolchain remains capability of linking them,
but would require different (or additional) csu files.

GCC removed GCJ from trunk in on September 30, 2016.  Our support came
in with D17587 for compatibility with old object files.  It was roughly
contemporaneous with GCC 6.5, the last release with GCJ support.  At
this point we don't even have a compiler port capable of producing GCJ
binaries so there is no need to carry this around any more.

For reference see:
    https://en.wikipedia.org/wiki/GNU_Compiler_for_Java#History

Reviewed by:	kib, emaste
Discussed with:	imp
Sponsored by:	SRI International
Differential Revision:	https://reviews.freebsd.org/D49882
crtend: accurately check for the start of .ctors 2025-01-28T22:59:20+00:00 Konstantin Belousov kib@FreeBSD.org 2025-01-27T20:38:27+00:00 21502f9a926c7e0c24ce230bb029fde4bf570a14 For the hypothetic situation where crtbegin.o is not linked into the binary, but crtend.o is, which results in the missing starting sentinel in the ctors array, be careful to not iterate past the start of the section. Reviewed by: andrew, dim Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D48700 
For the hypothetic situation where crtbegin.o is not linked into the
binary, but crtend.o is, which results in the missing starting sentinel
in the ctors array, be careful to not iterate past the start of the
section.

Reviewed by:	andrew, dim
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D48700
crtbegin: accurately check for the end of .dtors 2025-01-28T22:59:20+00:00 Konstantin Belousov kib@FreeBSD.org 2025-01-27T19:21:20+00:00 6ee34bca48a9e0867d46b24a78855e225d46ddda not relying only on the end section marker, but also checking for the section size when iterating. Reported by: kargl Analyzed by: dim Reviewed by: andrew, dim Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D48700 
not relying only on the end section marker, but also checking for the
section size when iterating.

Reported by:	kargl
Analyzed by:	dim
Reviewed by:	andrew, dim
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D48700
csu: add the "Retain" flag to notes sections flag 2025-01-24T13:36:41+00:00 Konstantin Belousov kib@FreeBSD.org 2025-01-24T11:32:53+00:00 6700e2d963ff0475cc5cd444e92ce40855643084 It should make the notes immune against --gc-sections. Reported and tested by: bapt Sponsored by: The FreeBSD Foundation MFC after: 1 week 
It should make the notes immune against --gc-sections.

Reported and tested by:	bapt
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
lib: Automated cleanup of cdefs and other formatting 2023-11-27T05:23:59+00:00 Warner Losh imp@FreeBSD.org 2023-11-24T20:12:57+00:00 a2f733abcff64628b7771a47089628b7327a88bd Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/ Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/ Sponsored by: Netflix 
Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by:		Netflix
csu: Teach csu about PAC and BTI 2023-10-30T17:55:44+00:00 Andrew Turner andrew@FreeBSD.org 2023-10-12T10:03:37+00:00 522126fea72419fae344fbcb897b41588909308a Add the Branch Target Identification (BTI) note to libc assembly sources and Pointer Authentication Code (PAC) instructions to _init and _fini. _init and _fini may be called indirectly so need a BTI landing pad. As they are non-leaf functions use the appropriate PAC instruction that also guards against changing the link register. As all object files need the note for any binary using these object files we need to insert it in all asm files. Reviewed by: markj Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D42227 
Add the Branch Target Identification (BTI) note to libc assembly
sources and Pointer Authentication Code (PAC) instructions to _init and
_fini.

_init and _fini may be called indirectly so need a BTI landing pad. As
they are non-leaf functions use the appropriate PAC instruction that
also guards against changing the link register.

As all object files need the note for any binary using these object files
we need to insert it in all asm files.

Reviewed by:	markj
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D42227
Remove $FreeBSD$: one-line .c pattern 2023-08-16T17:54:42+00:00 Warner Losh imp@FreeBSD.org 2023-08-16T17:54:42+00:00 1d386b48a555f61cb7325543adbbb5c3f3407a66 Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/ 
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
Remove $FreeBSD$: two-line .h pattern 2023-08-16T17:54:16+00:00 Warner Losh imp@FreeBSD.org 2023-08-16T17:54:16+00:00 b3e7694832e81d7a904a10f525f8797b753bf0d3 Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/ 
Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12T16:44:03+00:00 Warner Losh imp@FreeBSD.org 2023-05-10T15:40:58+00:00 4d846d260e2b9a3d4d0a701462568268cbfe7a5b The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix 
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix