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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 picflag.m4 high bit set in comment 2017-01-05 00:02:57 +10:30
cpu Add fall through comment to source in cpu/ 2016-10-06 22:48:37 +10:30
elfcpp Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
etc update-copyright.py for binutils 2017-01-05 00:03:07 +10:30
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 Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
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
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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 Improve MinGW support in Readline 2016-09-17 11:50:37 +03:00
sim Fix umulh and smulh bugs. Fix bugs in last week's sumov.s testsuite. 2017-03-03 13:10:45 -08:00
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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,
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If you have more than one compiler on your system, it is often best to
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	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

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the Free Software Foundation, Inc.  See the file COPYING or
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