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Pedro Alves 9bcbdca808 PR remote/21188: Fix remote serial timeout
As Gareth McMullin <gareth@blacksphere.co.nz> reports at
<https://sourceware.org/ml/gdb-patches/2017-02/msg00560.html>, the
timeout mechanism in ser-unix.c was broken by commit 048094acc
("target remote: Don't rely on immediate_quit (introduce quit
handlers)").

Instead of applying a local fix, and since we now finally always use
interrupt_select [1], let's get rid of hardwire_readchar entirely, and
use ser_base_readchar instead, which has similar timeout handling,
except for the bug.

Smoke tested with:

 $ socat -d -d pty,raw,echo=0 pty,raw,echo=0
 2017/03/14 14:08:13 socat[4994] N PTY is /dev/pts/14
 2017/03/14 14:08:13 socat[4994] N PTY is /dev/pts/15
 2017/03/14 14:08:13 socat[4994] N starting data transfer loop with FDs [3,3] and [5,5]
 $ gdbserver /dev/pts/14 PROG
 $ gdb PROG -ex "tar rem /dev/pts/15"

and then a few continues/ctrl-c's, plus killing gdbserver and socat.

[1] - See FIXME comments being removed.

gdb/ChangeLog:
2017-03-17  Pedro Alves  <palves@redhat.com>

	PR remote/21188
	* ser-base.c (ser_base_wait_for): Add comment.
	(do_ser_base_readchar): Improve comment based on the ser-unix.c's
	version.
	* ser-unix.c (hardwire_raw): Remove reference to
	scb->current_timeout.
	(wait_for, do_hardwire_readchar, hardwire_readchar): Delete.
	(hardwire_ops): Install ser_base_readchar instead of
	hardwire_readchar.
	* serial.h (struct serial) <current_timeout, timeout_remaining>:
	Remove fields.
2017-03-17 16:08:12 +00:00
bfd Automatic date update in version.in 2017-03-17 00:00:34 +00:00
binutils Add support for a GNU BUILD note type to record the enum size. 2017-03-16 16:44:55 +00:00
config
cpu
elfcpp
etc
gas gas/arc: Limit special handling of t/nt flag to ARCv2 2017-03-16 10:07:22 +00:00
gdb PR remote/21188: Fix remote serial timeout 2017-03-17 16:08:12 +00:00
gold Mips: Fix TLS LDM GOT entry. 2017-03-15 16:51:35 -07:00
gprof
include Add support for a GNU BUILD note type to record the enum size. 2017-03-16 16:44:55 +00:00
intl
ld ld sec64k test fix 2017-03-17 19:08:55 +10:30
libdecnumber
libiberty Merge libiberty: Initialize d_printing in all cplus_demangle_fill_* functions. 2017-03-13 20:51:42 +01:00
opcodes E6500 spr mnemonics 2017-03-17 19:09:15 +10:30
readline
sim Fix umulh and smulh bugs. Fix bugs in last week's sumov.s testsuite. 2017-03-03 13:10:45 -08:00
texinfo
zlib Sync ZLIB with FSF GCC sources, bringing in version 1.2.11. 2017-02-20 12:52:22 +00:00
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		   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.