Pedro Alves 0256a6ac4b Make the dcache (code/stack cache) handle line reading errors better
The dcache (code/stack cache) is supposed to be transparent, but it's
actually not in one case.  dcache tries to read chunks (cache lines)
at a time off of the target.  This may end up trying to read
unaccessible or unavailable memory.  Currently the caller gets an xfer
error in this case.  But if the specific bits of memory the caller
actually wanted are available and accessible, then the caller should
get the memory it wanted, not an error.

gdb/
2014-05-21  Pedro Alves  <palves@redhat.com>

	* dcache.c (dcache_read_memory_partial): If reading the cache line
	fails, fallback to reading just the memory the caller wanted.

gdb/testsuite/
2014-05-21  Pedro Alves  <palves@redhat.com>

	* gdb.base/dcache-line-read-error.c: New.
	* gdb.base/dcache-line-read-error.exp: New.
2014-05-21 13:58:16 +01:00
2014-05-21 09:31:09 +09:30
2014-03-12 15:02:00 +10:30
2010-09-27 21:01:18 +00:00
2007-02-13 15:25:58 +00:00
2010-01-09 21:11:44 +00:00
2014-02-06 11:01:57 +01:00
2010-01-09 21:11:44 +00:00
2010-01-09 21:11:44 +00:00

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.
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