Add {get,set}_field macros (simliar to ehci) to read and update
some bits of a word. Put them into use for updating pls (port
link state) values. Also add a enum for pls values.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add pixman submodule as fallback for old distros.
Picking version 0.18.4. This is shipped by rhel6
and also the minimum version needed by spice so this
should serve well as baseline.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
With both text (curses) and graphics (vnc/sdl/spice/...) display active
vga text mode emulation fails to update both correctly. Depending on
whenever vga_update_text() or vga_draw_text() happens to be called first
only the text display or only the graphics display will see display
resolution changes and full redraws.
Fix it by calling both text/gfx resize functions in both code paths and
keep track of full screen redraws needed in VGACommonState fields.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Stop abusing displaysurface fields for text mode displays.
(bpp = 0, width = cols, height = lines).
Add flags to displaystate indicating whenever text mode display
(curses) or gfx mode displays (sdl, vnc, ...) are present.
Add separate displaychangelistener callbacks for text / gfx mode
resize & updates.
This allows to enable gfx and txt diplays at the same time and also
paves the way for more cleanups in the future.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When adding DisplayChangeListeners the set_mouse and cursor_define
callbacks have been left in DisplayState for some reason. Fix it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Also change the way the gui_timer is initialized: each time a
displaychangelistener is registered or unregistered we'll check
whether we need a timer (due to dpy_refresh callback being present)
and if so setup a timer, otherwise zap it. This way the gui timer
works correctly with displaychangelisteners coming and going.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
A couple of places in xics.c open-coded the same logic as is already
implemented in ics_valid_irq(). This patch fixes the code duplication.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Throughout xics.c 'nr' is used to refer to a global interrupt number, and
'server' is used to refer to an interrupt server number (i.e. CPU number).
Except in icp_set_mfrr(), where 'nr' is used as a server number. Fix this
confusing inconsistency.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
This patch adds some extra FPU state to CPUPPCState. Specifically,
fpscr is extended to a target_ulong bits, since some recent (64 bit)
CPUs now have more status bits than fit inside 32 bits. Also, we add
the 32 VSR registers present on CPUs with VSX (these extend the
standard FP regs, which together with the Altivec/VMX registers form a
64 x 128bit register file for VSX).
We don't actually support the instructions using these extra registers
in TCG yet, but we still need a place to store the state so we can
sync it with KVM and savevm/loadvm it. This patch updates the savevm
code to not fail on the extended state, but also does not actually
save it - that's a project for another patch.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
We change the storage of the VPA information to explicitly use fixed
size integer types which will make life easier for syncing this data with
KVM, which we will need in future.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: fix commit message]
Signed-off-by: Alexander Graf <agraf@suse.de>
This reverts commit a178274efa.
Contrary to that commit's message, the users of old_portio are not all
gone. In particular VGA still uses it via portio_list_add().
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Some guest operating systems' drivers (Mac OS X in particular) fail to
properly initialize the Receive Address registers (probably expecting
them to be pre-initialized by an earlier component, such as a specific
proprietary BIOS). This patch pre-initializes the RA registers, allowing
OS X networking to function properly. Other guest operating systems are
not affected, and free to (re)initialize these registers during boot.
[According to the datasheet the Address Valid bits in the RA registers
are cleared on PCI or software reset. This patch adds the NIC's MAC
address and sets Address Valid on reset. So we diverge from real
hardware behavior here. -- Stefan]
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The netdev_del command crashes when given a -net device, because it
calls qemu_opts_del(NULL).
Check that this is a -netdev before attempting to delete it and the
QemuOpts.
Note the subtle change from qemu_find_opts_err("netdev", errp) to
qemu_find_opts_err("netdev", NULL). Since "netdev" is a built in
options group and we don't check for NULL return anyway, there's no use
in passing errp here.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Fix the problem that can not delete the udp socket.
It's caused by passing "udp" model to net_socket_udp_init,
but we do not have "udp" model in our model list.
Pass the right model "socket" to init function.
https://bugs.launchpad.net/qemu/+bug/1073585?comments=all
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Real HW always treats RX ring with RDH == RDT as empty.
Emulation is supposed to behave the same.
Reported-by: Chris Webb <chris.webb@elastichosts.com>
Reported-by: Richard Davies <richard.davies@elastichosts.com>
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
If the guest uses a TLBWI instruction for upgrading permissions, we
don't need to flush the extra TLBs. This improve boot time performance
by about 10%.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Use the deposit op instead of and hardcoded bit field insertion. It
allows the host to emit the corresponding instruction if available.
At the same time remove the (lsb > msb) test. The MIPS64R2 instruction
set manual says "Because of the instruction format, lsb can never be
greater than msb, so there is no UNPREDICATABLE case for this
instruction."
(Bug reported as LP:1071149.)
Cc: Никита Канунников <n.kanunnikov@sbtcom.ru>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The result of a division by 0, or a division of INT_MIN by -1 in the
signed case, is unpredictable. Just replace 0 by 1 in that case so that
it doesn't trigger a floating point exception on the host.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Avoid the branches in movn/movz implementation and replace them with
movcond. Also update a wrong command.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Store conditional operations only need local temps in user mode. Fix
the code to use temp local only in user mode, this spares two memory
stores in system mode.
At the same time remove a wrong a wrong copied & pasted comment,
store operations don't have a register destination.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Load/store from helpers should be avoided as they are quite
inefficient. Rewrite unaligned loads instructions using TCG and
aligned loads. The number of actual loads operations to implement
an unaligned load instruction is reduced from up to 8 to 1.
Note: As we can't rely on shift by 32 or 64 undefined behaviour,
the code loads already shift by one constants.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
load/store microMIPS helpers are reinventing the wheel. Call do_lw,
do_ll, do_sw and do_sl instead of using a macro calling the cpu_*
load/store functions.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Load/store operations use macros for historical reasons. Now that there
is no point in keeping them, replace them by direct calls to qemu_ld/st.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Rework *raise_exception*() functions so that they can be called from
other helpers, passing the return address as an argument.
Use do_raise_exception() function in update_fcr31() to correctly restore
the CPU state after an FPU exception.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
softfloat already has a few constants defined, use them instead of
redefining them in target-mips.
Rename FLOAT_SNAN32 and FLOAT_SNAN64 to FP_TO_INT32_OVERFLOW and
FP_TO_INT64_OVERFLOW as even if they have the same value, they are
technically different (and defined differently in the MIPS ISA).
Remove the unused constants.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Instead of accessing the flags from the floating point control
register after updating it, read the softfloat flags.
This is just code cleanup and should not change the behaviour.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
For each FPU instruction that can trigger an FPU exception, to call
call update_fcr31() after.
Remove the manual NaN assignment in case of float to float operation, as
softfloat is already taking care of that. However for float to int
operation, the value has to be changed to the MIPS one. In the cvtpw_ps
case, the two registers have to be handled separately to guarantee
a correct final value in both registers.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Instead of clearing the softfloat exception flags before each floating
point instruction, reset them to 0 in update_fcr31() when an exception
is detected.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Use the new softfloat floatXX_muladd() functions to implement the madd,
msub, nmadd and nmsub instructions. At the same time replace the name of
the helpers by the name of the instruction, as the only reason for the
previous names was to keep the macros simple.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Add a pickNaNMulAdd function for MIPS, implementing NaN propagation
rules for MIPS fused multiply-add instructions.
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
When the CPU state after a possible retranslation is going to be handled
through code retranslation, we don't need to save the CPU state before.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
When the CPU state is restored through retranslation after an exception,
btarget should also be restored.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Commit 9c43b68de6 do not correctly check
for dead outputs when they need to be synced to memory in case of
half-dead operations.
Fix that by applying the same pattern than for the default case.
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Mark helper functions that raise exceptions, but otherwise do not
change TCG register state, with TCG_CALL_NO_WG.
Signed-off-by: Richard Henderson <rth@twiddle.net>
As the block layer may decide to flush bottom-halfs while the machine is
still initializing (e.g. to read geometry data from the disk), our
postponed open event may be processed before the last frontend
registered with a muxed chardev.
Until the semantics of BHs have been clarified, use an expired timer to
achieve the same effect (suggested by Paolo Bonzini). This requires to
perform the alarm timer initialization earlier as otherwise timer
subsystem can be used before being ready.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
All switch() decoding instruction have a default entry, so it is possible
to have unused enum entries. Remove conditional definitions of MIPS64
opcode enums, as it only makes the code less readable.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
