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authorSergio Lopez <slp@redhat.com>2017-12-04 09:17:13 +0100
committerSergio Durigan Junior <sergiodj@redhat.com>2017-12-04 11:54:55 -0500
commit1e52e8495a074c9d1f7ef17f13b9060b76be6f41 (patch)
tree50ce2a06e4c6cba6281426c11145142e45b84729 /gdb/doc
parentafa840dcc021eaeb975dcde3bedbf46ea0511717 (diff)
downloadbinutils-gdb-1e52e8495a074c9d1f7ef17f13b9060b76be6f41.tar.gz
Document new {set,show} dump-excluded-mappings commands.
gdb/ChangeLog: 2017-11-29 Sergio Lopez <slp@redhat.com> * NEWS (Changes since GDB 8.0): Announce {set,show} dump_excluded_mappings commands. gdb/doc/ChangeLog: 2017-11-29 Sergio Lopez <slp@redhat.com> * gdb.texinfo (gcore): Mention new {set,show} dump-excluded-mappings commands. (set dump-excluded-mappings): Document new command.
Diffstat (limited to 'gdb/doc')
-rw-r--r--gdb/doc/gdb.texinfo14
1 files changed, 13 insertions, 1 deletions
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 689025feabd..1039f4c27bb 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -11594,7 +11594,9 @@ this writing, @sc{gnu}/Linux, FreeBSD, Solaris, and S390).
On @sc{gnu}/Linux, this command can take into account the value of the
file @file{/proc/@var{pid}/coredump_filter} when generating the core
-dump (@pxref{set use-coredump-filter}).
+dump (@pxref{set use-coredump-filter}), and by default honors the
+@code{VM_DONTDUMP} flag for mappings where it is present in the file
+@file{/proc/@var{pid}/smaps} (@pxref{set dump-excluded-mappings}).
@kindex set use-coredump-filter
@anchor{set use-coredump-filter}
@@ -11624,6 +11626,16 @@ value is currently @code{0x33}, which means that bits @code{0}
(anonymous private mappings), @code{1} (anonymous shared mappings),
@code{4} (ELF headers) and @code{5} (private huge pages) are active.
This will cause these memory mappings to be dumped automatically.
+
+@kindex set dump-excluded-mappings
+@anchor{set dump-excluded-mappings}
+@item set dump-excluded-mappings on
+@itemx set dump-excluded-mappings off
+If @code{on} is specified, @value{GDBN} will dump memory mappings
+marked with the @code{VM_DONTDUMP} flag. This flag is represented in
+the file @file{/proc/@var{pid}/smaps} with the acronym @code{dd}.
+
+The default value is @code{off}.
@end table
@node Character Sets