Now that the code_gen_buffer is constrained to not cross 256mb
regions, we are assured that we can use J to reach another TB.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Use the same table to fold comparisons as with setcond.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Emitting a single branch instead of (up to) 3, using setcond2
to generate the composite compare.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The original code results in one too many insns per zero
present in the input. And since comparing 64-bit numbers
vs zero is common...
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Using tcg_unsigned_cond and tcg_high_cond.
Also, move the function up in the file for future cleanups.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Use the same table to fold comparisons as with setcond.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Use a table to fold comparisons to less-than.
Also, move the function up in the file for futher simplifications.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Most opcodes fall in to one of a couple of patterns.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Since we must use ADDUI, we would generate incorrect code for -32768.
Leaving off subtract of +32768 makes things easier for a follow-on patch.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
At the same time, tidy deposit by introducing tcg_out_opc_bf.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
T0 is an argument register for the n32 and n64 abis. T9 is the call
address register for the abis, and is more directly under the control
of the backend.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Use these instead of hard-coding the registers to use for temporaries.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Use FP (also known as S8) as a normal call-saved register.
Include T0 in the allocation order and call-clobbered list
even though it's currently used as a TCG temporary.
Put the argument registers at the end of the allocation order.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
In addition, fill delay slots calling the helpers and tail
call to the store helpers.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
At the same time, tidy up the call helpers, avoiding a memory reference.
Split out several subroutines. Use TCGMemOp constants. Make endianness
selectable at runtime.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
For userland builds calls will normally be in range,
and for the exit_tb opcode the branch to the epilogue.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This assures us use of J for exit_tb and goto_tb, and JAL for calling
into the generated bswap helpers.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Choosing good addresses for them means we can use JAL for helper calls.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Bailing out when PK11_FindGenericObjects() returns null ensures the
loop that follows it executes at least once. The "loop did not
execute" test right after it is useless. Drop it.
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Bonus: hushes up Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
We suppress some code when we got unexpected status and assertion
checking is off:
assert(card_status == VCARD_DONE);
if (card_status == VCARD_DONE) {
int size = MIN(*receive_buf_len, response->b_total_len);
memcpy(receive_buf, response->b_data, size);
*receive_buf_len = size;
}
Such "recovery" is of dubious value even when it works. This one
doesn't: it fails to assign to receive_buf[] and *receive_buf_len,
which the callers expect.
Make the code unconditional.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The 'name' option silently failed when used in config files
( http://lists.gnu.org/archive/html/qemu-devel/2014-04/msg00378.html )
-readconfig stores the configuration read in QemuOpts. Command line
option parsing should do the same, and no more. In particular it should
not act upon the option. That needs to be done separately, where both
command line and -readconfig settings are visible in QemuOpts.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reported-by: William Dauchy <william@gandi.net>
Tested-by: William Dauchy <william@gandi.net>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(mjt: added commit message by ambru@ and subject prefix)
When libtool support was added to configure, the new temporary files
were left out of the list of files cleaned up on exit; this results
in a lot of stale .lo files being left around in /tmp. Worse, libtool
creates a /tmp/.libs directory which we can't easily clean up.
Put all our temporary files in a single temporary directory created
as a subdirectory of the build directory, so we can easily clean it up,
and don't need fragile or complicated code for creation to avoid it
clashing with temporary directories from other instances of QEMU
configure or being subject to attack from adversaries who can write
to /tmp.
Since the temporaries now live in the build tree, we have no
need to jump through hoops with a trap handler to try to remove
them when configure exits; this fixes some weird bugs where hitting
^C during a configure run wouldn't actually make it stop, because
we would run the trap handler but then not stop. (It is possible
to get the trap handler semantics right but it is convoluted largely
because of bugs in dash, so it is simpler to just avoid it.)
Note that "temporary files go in the build directory, not /tmp" is
the way autoconf behaves.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Calling dma_bdrv_unmap() twice is not necessary and may cause
potential problems if some code changes.
Signed-off-by: Jules Wang <junqing.wang@cs2c.com.cn>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Replace fprintf(stderr,...) with error_report() in the file
arch_init.c. The trailing "\n"s of the @fmt argument have been removed
because @fmt of error_report() should not contain newline.
Signed-off-by: Le Tan <tamlokveer@gmail.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Saravanakumar <saravanakumar.punith@gmail.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
We have an unfortunate naming clash between the functions
ldl_p, stl_p, etc defined in bswap.h (which have semantics
"load/store in host endianness") and the #defines of the same
name in cpu-all.h (which have the semantics "load/store in
target endianness").
Fortunately it turns out that the only users of the bswap.h
functions are all within bswap.h itself, so we can simply
rename them to include a _he_ infix for "host endianness".
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The configure option --with-gtkabi=3.0 is still supported, but no longer
needed when GTK+-2.0 is missing. When no GTK+ ABI is selected by the
user, configure first tries 2.0, then 3.0.
For some platforms (e.g. Windows) newer binaries of GTK+ are only
available for GTK+ 3.0. Now building on these platforms is a little bit
easier.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Otherwise, the nbd client may hang waiting for the server response.
Signed-off-by: Hani Benhabiles <hani@linux.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The code in qemu_init_child_watch() wasn't clearing the 'struct
sigaction' before passing it to sigaction(); this meant that we
would block a random set of signals while executing the SIGCHLD
handler. Initialize properly by using memset() on the struct,
as we do in similar cases elsewhere.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This patch replaces g_malloc() in libcacard into g_new()
or g_new0() where appropriate (removing some init-to-zero
surrounding code), g_malloc+memcpy into g_memdup() and the
like.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Alon Levy <alevy@redhat.com>
Broken since dddbb2e1e3.
Do all the rest of the things that tcg_out_op did before
and after the big switch statement.
Signed-off-by: Richard Henderson <rth@twiddle.net>
* remotes/qmp-unstable/queue/qmp:
qapi: zero-initialize all QMP command parameters
scripts/qapi.py: Avoid syntax not supported by Python 2.4
doc: add "setup" to list of migration states
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- Enable irqfds on s390 via the new adapter interrupt routing type.
As a prereq, fix the kvm enable_cap helpers for some compilers and
split the s390 flic into kvm and non-kvm parts.
- Enable software and hardware debugging support on s390. This needs a
kernel headers update.
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Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20140520' into staging
some s390 patches:
- Enable irqfds on s390 via the new adapter interrupt routing type.
As a prereq, fix the kvm enable_cap helpers for some compilers and
split the s390 flic into kvm and non-kvm parts.
- Enable software and hardware debugging support on s390. This needs a
kernel headers update.
# gpg: Signature made Tue 20 May 2014 12:30:54 BST using RSA key ID C6F02FAF
# gpg: Can't check signature: public key not found
* remotes/cohuck/tags/s390x-20140520:
s390x/kvm: hw debugging support via guest PER facility
s390x/kvm: software breakpoint support
s390x: remove duplicate definitions of DIAG 501
linux-headers: update
s390x/virtio-ccw: wire up irq routing and irqfds
s390x/virtio-ccw: reference-counted indicators
s390x: add I/O adapter registration
s390x: split flic into kvm and non-kvm parts
kvm: Fix enable_cap helpers on older gcc
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* remotes/bonzini/scsi-next:
megasas: remove buildtime strings
block: iscsi build fix if LIBISCSI_FEATURE_IOVECTOR is not defined
virtio-scsi: Plug memory leak on virtio_scsi_push_event() error path
scsi: Document intentional fall through in scsi_req_length()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In general QMP command parameter values are specified by consumers of the
QMP/HMP interface, but in the case of optional parameters these values may
be left uninitialized.
It is considered a bug for code to make use of optional parameters that have
not been flagged as being present by the marshalling code (via corresponding
has_<parameter> parameter), however our marshalling code will still pass
these uninitialized values on to the corresponding QMP function (to then
be ignored). Some compilers (clang in particular) consider this unsafe
however, and generate warnings as a result. As reported by Peter Maydell:
This is something clang's -fsanitize=undefined spotted. The
code generated by qapi-commands.py in qmp-marshal.c for
qmp_marshal_* functions where there are some optional
arguments looks like this:
bool has_force = false;
bool force;
mi = qmp_input_visitor_new_strict(QOBJECT(args));
v = qmp_input_get_visitor(mi);
visit_type_str(v, &device, "device", errp);
visit_start_optional(v, &has_force, "force", errp);
if (has_force) {
visit_type_bool(v, &force, "force", errp);
}
visit_end_optional(v, errp);
qmp_input_visitor_cleanup(mi);
if (error_is_set(errp)) {
goto out;
}
qmp_eject(device, has_force, force, errp);
In the case where has_force is false, we never initialize
force, but then we use it by passing it to qmp_eject.
I imagine we don't then actually use the value, but clang
complains in particular for 'bool' variables because the value
that ends up being loaded from memory for 'force' is not either
0 or 1 (being uninitialized stack contents).
Fix this by initializing all QMP command parameters to {0} in the
marshalling code prior to passing them on to the QMP functions.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
The Python "except Foo as x" syntax was only introduced in
Python 2.6, but we aim to support Python 2.4 and later.
Use the old-style "except Foo, x" syntax instead, thus
fixing configure/compile on systems with older Python.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
