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elf.5: start documenting ELF note sections

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I intend to document FreeBSD's ELF notes (see review D23982), but start
with a section documenting the format of the note section itself.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Ed Maste 2020-03-11 18:15:18 +00:00
parent e6db0f0409
commit 311223e017
1 changed files with 21 additions and 1 deletions
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22
share/man/man5/elf.5
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@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd December 18, 2005
.Dd March 11, 2020
.Dt ELF 5
.Os
.Sh NAME
@ -1276,6 +1276,26 @@ member.
This member specifies a constant addend used to compute the value to be
stored into the relocatable field.
.El
.Ss Note Section
ELF note sections consist of entries with the following format.
.Bl -column -offset indent "Sy Field" "Sy Size" "Sy Description"
.It Sy Field Ta Sy Size Ta Sy Description
.It namesz Ta 32 bits Ta Size of "name"
.It descsz Ta 32 bits Ta Size of "desc"
.It type Ta 32 bits Ta OS-dependent note type
.It name Ta namesz Ta Null-terminated originator name
.It desc Ta descsz Ta OS-dependent note data
.El
.Pp
The
.Sy name
and
.Sy desc
fields are padded to ensure 4-byte alignemnt.
.Sy namesz
and
.Sy descsz
specify the unpadded length.
.Sh SEE ALSO
.Xr as 1 ,
.Xr gdb 1 ,