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>
The single cycle dual mac ABS insn was incorrectly decoding the mac1
part of the insn.
Once we fix the decode, update the gas tests to have the correct output.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
When assigning to a register half, the mac0 part of the mult insn
was not decoding properly. It would always show a full dreg instead
of the dreg low half.
Once we fix the disassembler, we have to update a few of the gas
tests as their previous expected output was incorrect.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The BYTEOP2M insn was part of the initial Blackfin designs, but never made
it into any actual silicon. So punt support for it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Fix const/volatile qualifiers of C++ types, PR c++/12328.
* c-typeprint.c (c_type_print_args): Update the function comment. New
variable param_type, initialize it. Remove const/volatile qualifiers
for language_cplus and !show_artificial. Use param_type.
gdb/testsuite/
Fix const/volatile qualifiers of C++ types, PR c++/12328.
* gdb.cp/overload-const.exp: New file.
* gdb.cp/overload-const.cc: New file.
* symtab.c (find_pc_sect_line): New variable objfile, initialize it
from S. Iterate S using ALL_OBJFILE_SYMTABS. Verify BV for each S.
* symtab.h (struct symtab) <next>: Comment extension.
There never was a "GP" register, so punt it from the decode map. It's
a hold over from a very old processor definition and never made it into
actual silicon.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The mmod field is decoded in a few places (gas/opcodes/sim), so move it to
a common place to avoid duplication.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
/:
PR binutils/12283
* MAINTAINERS (mkinstalldirs): Comes from Automake.
(move-if-change): Comes from gnulib.
* move-if-change: Import version from gnulib.
/:
Sync from GCC:
2011-02-12 Alexandre Oliva <aoliva@redhat.com>
PR lto/47225
* Makefile.def (lto-plugin): Double dash for enable-shared.
(configure-gcc): Depend on all-lto-plugin.
* Makefile.in: Rebuilt.
2011-02-11 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* configure.ac: Remove extra bracket.
* configure: Regenerate.
2011-02-06 Kai Tietz <kai.tietz@onevision.com>
PR lto/47225
* Makefile.def: Add dependency for install-gcc
on install-lto-plugin.
* Makfile.in: Regenerated
2011-01-25 Jakub Jelinek <jakub@redhat.com>
* configure.ac: If with_ppl is no, move setting with_cloog=no
after CLOOG_REQUESTED check.
* configure: Regenerated.
2011-01-25 Sebastian Pop <sebastian.pop@amd.com>
* configure.ac: Call AC_MSG_ERROR when PPL 0.11 is not present and
CLooG has been requested.
* configure: Regenerated.
2011-01-25 Sebastian Pop <sebastian.pop@amd.com>
* configure: Regenerated.
* configure.ac: Check for version 0.11 (or later revision) of PPL.
2011-01-25 Tobias Grosser <grosser@fim.uni-passau.de>
* configure: Regenerated.
* configure.ac: Use CLOOG_CHECK_VERSION(0,16,1).
2011-01-07 Jan Hubicka <jh@suse.cz>
PR lto/47225
* Makefile.in: Regenerate.
* Makefile.def (lto-plugin): Always pass enable-shared to the plugin
configure.
config/:
2011-01-25 Jakub Jelinek <jakub@redhat.com>
* cloog.m4 (CLOOG_REQUESTED): Use $2 if --without-cloog.
2011-01-10 Jan Hubicka <jh@suse.cz>
* bootstrap-lto.mk: -fuse-linker-plugin is default now;
pass -fno-lto to STAGEprofile.
A bunch of Blackfin-specific directives were lacking info on what they
actually do, so fill in the blanks. Further, the byte2/byte4 descriptions
were swapped.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* doc/as.texinfo: Refer to and include c-ppc.texi for PowerPC options.
(Overview <Target PowerPC options>): Add a number of missing options.
* doc/c-ppc.texi: Likewise. Add markup for use in manpage generation.
Mike Frysinger