forked from Imagelibrary/binutils-gdb
a67a9faef0
Say GDB wants to access the inferior process's memory. The current remote general thread is 3, but GDB's switched to thread 2. Because both threads are of the same process, GDB skips making the remote thread be thread 2 as well (sending an Hg packet) before accessing memory (remote.c:set_general_process). However, if thread 3 has exited meanwhile, thread 3 no longer exists on the server and gdbserver points current_thread to NULL. The result is the memory access fails, even through the process still exists. Fix this by making prepare_to_access memory select the thread to access memory through. gdb/gdbserver/ChangeLog: 2015-11-30 Pedro Alves <palves@redhat.com> * mem-break.c (check_gdb_bp_preconditions): Remove current_thread check. (set_gdb_breakpoint): If prepare_to_access_memory fails, set *ERR to -1. * target.c (struct thread_search): New structure. (thread_search_callback): New function. (prev_general_thread): New global. (prepare_to_access_memory, done_accessing_memory): New functions. * target.h (prepare_to_access_memory, done_accessing_memory): Replace macros with function declarations.
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.