Commit Graph

27 Commits

Author SHA1 Message Date
Joel Brobecker
61baf725ec update copyright year range in GDB files
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.

gdb/ChangeLog:

        Update copyright year range in all GDB files.
2017-01-01 10:52:34 +04:00
Mike Frysinger
1ac72f0659 sim: convert to bfd_endian
Rather than re-invent endian defines, as well as maintain our own list
of OS & arch-specific includes, punt all that logic in favor of the bfd
ones already set up and maintained elsewhere.  We already rely on the
bfd library, so leveraging the endian aspect should be fine.
2016-01-03 00:18:07 -05:00
Joel Brobecker
618f726fcb GDB copyright headers update after running GDB's copyright.py script.
gdb/ChangeLog:

        Update year range in copyright notice of all files.
2016-01-01 08:43:22 +04:00
Mike Frysinger
83034798de sim: trace: centralize the system tracing
First we convert the ETRACE_P to STRACE_EVENTS_P.  This means we move from
using the sim_events.trace storage to the common sim_state_base.trace_data
array.  With that deleted, the common trace init code can be simplified so
the sim state works the same as the sim cpu.
2015-06-11 10:39:43 -04:00
Joel Brobecker
32d0add0a6 Update year range in copyright notice of all files owned by the GDB project.
gdb/ChangeLog:

        Update year range in copyright notice of all files.
2015-01-01 13:32:14 +04:00
Joel Brobecker
ecd75fc8ee Update Copyright year range in all files maintained by GDB. 2014-01-01 07:54:24 +04:00
Joel Brobecker
8acc9f485b Update years in copyright notice for the GDB files.
Two modifications:
  1. The addition of 2013 to the copyright year range for every file;
  2. The use of a single year range, instead of potentially multiple
     year ranges, as approved by the FSF.
2013-01-01 06:41:43 +00:00
Joel Brobecker
c5a5708100 Copyright year update in most files of the GDB Project.
gdb/ChangeLog:

        Copyright year update in most files of the GDB Project.
2012-01-04 08:28:28 +00:00
Mike Frysinger
028f651542 sim: common: trim trailing whitespace 2011-03-15 03:16:17 +00:00
Mike Frysinger
891e7fb179 sim: change to 64bit time keeping to avoid 32bit overflows
The sim-events code jumps through some hoops to avoid using 64bit math
to manage the current time.  One fundamental assumption here is that by
constantly scheduling the sim poll event a short time into the future,
the 64bit difference will always fall into a signed 32bit value.  This
does work most of the time, except for when processing the sim poll event
itself.

Normally, sim_events_process() will dequeue the sim poll event, update
the current time (time_from_event) according to the next pending event,
process the sim poll event (which will then requeue the sim poll event),
and then continue on.

The problem here of course is that the current time is updated in that
small window before the sim poll event gets a chance to reschedule itself.
So if the 64bit difference between the current time and the next event
does not fit into the signed 32bit value, time_from_event overflows, and
the internal assert at the end of update_time_from_event() triggers.

Since attempts at tweaking sim_events_process() logic introduced other
subtle bugs (due to tangled assumptions between most pieces of the sim
time keeping code), change the time_from_event to a real 64bit value.
Tests on my system between a 32bit ELF and a 64bit ELF show no practical
difference (it's all lost in the system noise).  Basically, I booted a
Linux kernel to userspace and then paniced it; this gave me a constant
sample size of about 18 million insns.

This was noticed when simulating Blackfin Das U-Boot.  The simulated core
timer is given the max unsigned timeout value possible on a 32bit processor
(0xffffffff).  This timeout value is used directly to schedule a hw event
in the sim future (the IRQ firing).  Once the sim poll event is kicked off,
the next pending event is the core timer event which is more than 2^31
ticks in the future, and the sim aborts with:
sim-events.c:435: assertion failed - current_time == sim_events_time (sd)

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-02-14 04:58:12 +00:00
Joel Brobecker
7b6bb8daac run copyright.sh for 2011. 2011-01-01 15:34:07 +00:00
Joel Brobecker
dc3cf14f35 Update copyright notices to add year 2010. 2010-01-01 10:03:36 +00:00
Joel Brobecker
e4d013fc0f Update the copyright notice of some of the files I missed
in the previous copyright update.
2009-01-14 10:53:10 +00:00
Daniel Jacobowitz
9b254dd1ce Updated copyright notices for most files. 2008-01-01 22:53:26 +00:00
Joel Brobecker
4744ac1bb0 Switch the license of all files explicitly copyright the FSF
to GPLv3.
2007-08-24 14:30:15 +00:00
Daniel Jacobowitz
6aba47ca06 Copyright updates for 2007. 2007-01-09 17:59:20 +00:00
Andrew Cagney
b85e4829fa 2002-11-22 Andrew Cagney <ac131313@redhat.com>
* dv-core.c: Update copyright.  sim/common contributed to the FSF.
	* dv-glue.c, dv-pal.c, hw-base.c, hw-base.h, hw-device.c: Ditto.
	* hw-device.h, hw-handles.c, hw-handles.h: Ditto.
	* hw-instances.c, hw-instances.h, hw-properties.c: Ditto.
	* hw-properties.h, hw-tree.c, hw-tree.h, sim-alu.h: Ditto.
	* sim-basics.h, sim-bits.c, sim-bits.h, sim-config.c: Ditto.
	* sim-config.h, sim-core.c, sim-core.h, sim-endian.c: Ditto.
	* sim-endian.h, sim-events.c, sim-events.h, sim-inline.c: Ditto.
	* sim-inline.h, sim-io.c, sim-io.h, sim-n-bits.h: Ditto.
	* sim-n-core.h, sim-n-endian.h, sim-types.h: Ditto.
2002-11-23 01:12:05 +00:00
Chris Demetriou
6439295f61 2002-02-10 Chris Demetriou <cgd@broadcom.com>
* callback.c: Fix some spelling errors.
        * hw-device.h: Likewise.
        * hw-tree.c: Likewise.
        * sim-abort.c: Likewise.
        * sim-alu.h: Likewise.
        * sim-core.h: Likewise.
        * sim-events.c: Likewise.
        * sim-events.h: Likewise.
        * sim-fpu.h: Likewise.
        * sim-profile.h: Likewise.
        * sim-utils.c: Likewise.
2002-02-10 23:11:37 +00:00
Andrew Cagney
38e64f358e 2000-06-25 Stephane Carrez <Stephane.Carrez@worldnet.fr>
* sim-events.c (sim_events_remain_time): New function returning
        the time that remains before the event is raised.
        * hw-events.c (hw_event_remain_time): Likewise.
        * sim-events.h (sim_events_remain_time): Declare.
        * hw-events.h (hw_event_remain_time): Declare.
2000-07-27 11:37:34 +00:00
Stan Shebs
c906108c21 Initial creation of sourceware repository 1999-04-16 01:35:26 +00:00
Stan Shebs
071ea11e85 Initial creation of sourceware repository 1999-04-16 01:34:07 +00:00
Andrew Cagney
fdd64f952d Add support for suspending/resumeing the simulator in sim-modules.
Use in sim-events.
1997-09-03 07:26:11 +00:00
Andrew Cagney
f90b720ba1 Passify GCC. Convert 0x0LL to something more portable in the FP code. 1997-08-30 00:02:19 +00:00
Andrew Cagney
50a2a69182 Watchpoint interface. 1997-05-21 06:54:13 +00:00
Andrew Cagney
f03b093cd3 o Implement generic halt/restart/abort module.
Use in tic80 and d30v simulators.
o	Add signal hook to sim-core module
1997-05-19 03:42:33 +00:00
Andrew Cagney
c445af5a2b c80 simulator fixes. 1997-05-12 04:57:49 +00:00
Andrew Cagney
231de1b8db remove defunct variable from event struct 1997-03-17 16:26:35 +00:00