From 98297bf675da669930bacf6d0c08bc4d1a34df3e Mon Sep 17 00:00:00 2001
From: Nicolas Blanc <nicolas.blanc@intel.com>
Date: Fri, 5 Apr 2013 09:15:56 +0200
Subject: [PATCH] Documentation for the remove-symbol-file command.

2013-10-29  Nicolas Blanc  <nicolas.blanc@intel.com>

	* NEWS: Add description of the remove-symbol-file command.
gdb/doc
	* gdb.texinfo (Commands to Specify Files): Add description
	of the remove-symbol-file command.

Signed-off-by: Nicolas Blanc <nicolas.blanc@intel.com>
---
 gdb/NEWS            |  6 ++++++
 gdb/doc/gdb.texinfo | 26 ++++++++++++++++++++++++--
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/gdb/NEWS b/gdb/NEWS
index 6eb5090..efeda68 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -74,6 +74,12 @@ maint set|show per-command time
 maint set|show per-command symtab
   Enable display of per-command gdb resource usage.
 
+remove-symbol-file FILENAME
+remove-symbol-file -a ADDRESS
+  Remove a symbol file added via add-symbol-file.  The file to remove
+  can be identified by its filename or by an address that lies within
+  the boundaries of this symbol file in memory.
+
 * New options
 
 set debug symfile off|on
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 32516ae..28e6ff9 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -16718,8 +16718,9 @@ section name and base address for that section.  You can specify any
 The symbol table of the file @var{filename} is added to the symbol table
 originally read with the @code{symbol-file} command.  You can use the
 @code{add-symbol-file} command any number of times; the new symbol data
-thus read keeps adding to the old.  To discard all old symbol data
-instead, use the @code{symbol-file} command without any arguments.
+thus read is kept in addition to the old.
+
+Changes can be reverted using the command @code{remove-symbol-file}.
 
 @cindex relocatable object files, reading symbols from
 @cindex object files, relocatable, reading symbols from
@@ -16757,6 +16758,27 @@ way.
 
 @code{add-symbol-file} does not repeat if you press @key{RET} after using it.
 
+@kindex remove-symbol-file
+@item remove-symbol-file @var{filename}
+@item remove-symbol-file -a @var{address}
+Remove a symbol file added via the @code{add-symbol-file} command.  The
+file to remove can be identified by its @var{filename} or by an @var{address}
+that lies within the boundaries of this symbol file in memory.  Example:
+
+@smallexample
+(gdb) add-symbol-file /home/user/gdb/mylib.so 0x7ffff7ff9480
+add symbol table from file "/home/user/gdb/mylib.so" at
+    .text_addr = 0x7ffff7ff9480
+(y or n) y
+Reading symbols from /home/user/gdb/mylib.so...done.
+(gdb) remove-symbol-file -a 0x7ffff7ff9480
+Remove symbol table from file "/home/user/gdb/mylib.so"? (y or n) y
+(gdb)
+@end smallexample
+
+
+@code{remove-symbol-file} does not repeat if you press @key{RET} after using it.
+
 @kindex add-symbol-file-from-memory
 @cindex @code{syscall DSO}
 @cindex load symbols from memory
-- 
2.7.4