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[PATCH 5/7] DOC and NEWS
- From: Yao Qi <yao at codesourcery dot com>
- To: <gdb-patches at sourceware dot org>
- Date: Fri, 20 Sep 2013 10:47:04 +0800
- Subject: [PATCH 5/7] DOC and NEWS
- Authentication-results: sourceware.org; auth=none
- References: <1378641807-24256-1-git-send-email-yao at codesourcery dot com> <1379645226-8719-1-git-send-email-yao at codesourcery dot com>
-V3: Mention "in remote debugging".
gdb:
2013-09-20 Yao Qi <yao@codesourcery.com>
* NEWS: Describe the default option of
"trust-readonly-sections" becomes "auto" and the related
changes.
gdb/doc:
2013-09-20 Yao Qi <yao@codesourcery.com>
* gdb.texinfo (File): Mention that user has
'set trust-readonly-sections off' to get updated contents if
they are modified. Explain the default option of
"trust-readonly-sections" is "auto".
---
gdb/NEWS | 5 +++++
gdb/doc/gdb.texinfo | 12 ++++++++++--
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/gdb/NEWS b/gdb/NEWS
index 5eb046b..5a70adc 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -3,6 +3,11 @@
*** Changes since GDB 7.6
+* The default value of option "trust-readonly-sections" is "auto". In
+ remote debugging, GDB will decide based on the target memory
+ protection features whether to read readonly sections from object
+ file instead of from the inferior's memory.
+
* The "maintenance print objfiles" command now takes an optional regexp.
* The "catch syscall" command now works on arm*-linux* targets.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index a8c854e..a26160e 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -16673,12 +16673,20 @@ out of the object file, rather than from the target program.
For some targets (notably embedded ones), this can be a significant
enhancement to debugging performance.
-The default is off.
+@item set trust-readonly-sections auto
+This is the default mode. In remote debugging, @value{GDBN} will
+decide based on the target memory protection features whether to
+read readonly sections from object file instead of from the inferior's
+memory, because the contents of the section in the inferior can't
+change.
@item set trust-readonly-sections off
Tell @value{GDBN} not to trust readonly sections. This means that
the contents of the section might change while the program is running,
-and must therefore be fetched from the target when needed.
+and must therefore be fetched from the target when needed. If you
+modified the code in the target program, you have to
+@code{set trust-readonly-sections off} to guarantee @value{GDBN} reads
+updated contents from the target program instead of object file.
@item show trust-readonly-sections
Show the current setting of trusting readonly sections.
--
1.7.7.6