elf.5: Add description of .ctors and .dtors

Reviewed by:	kib
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D50536

share/man/man5/elf.5

@@ -22,7 +22,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd May 24, 2025
+.Dd May 26, 2025
 .Dt ELF 5
 .Os
 .Sh NAME
@@ -864,6 +864,13 @@ This section holds version control information.
 This section is of type
 .Sy SHT_PROGBITS .
 No attribute types are used.
+.It .ctors
+This legacy section holds pointers to initialization routines,
+executed before calling the main program entry point.
+This section is of type
+.Sy SHT_PROGBITS .
+The attributes used are
+.Sy SHF_ALLOC .
 .It .data
 This section holds initialized data that contribute to the program's
 memory image.
@@ -889,6 +896,13 @@ are unspecified.
 This section is of type
 .Sy SHT_PROGBITS .
 No attribute types are used.
+.It .dtors
+This legacy section holds pointers to finalization routines,
+executed when the program exits normally.
+This section is of type
+.Sy SHT_PROGBITS .
+The attributes used are
+.Sy SHF_ALLOC .
 .It .dynamic
 This section holds dynamic linking information.
 The section's attributes

share/man/man5/src.conf.5

@@ -1,5 +1,5 @@
 .\" DO NOT EDIT-- this file is @generated by tools/build/options/makeman.
-.Dd May 9, 2025
+.Dd May 26, 2025
 .Dt SRC.CONF 5
 .Os
 .Sh NAME