isa: Add isa_address_space_io()

This function permits to retrieve ISA IO address space.
It will be usefull when we need to pass IO address space as argument.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
hw/apm.c: Replace register_ioport_*

Replace all register_ioport_*() with a MemoryRegion.
This permits to use the new Memory stuff like listeners.

Moreover, the PCI device is added as an argument for apm_init(),
so we can register IO inside the PCI IO address space.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
[AF: Rebased onto hwaddr and q35]
Signed-off-by: Andreas Färber <afaerber@suse.de>
hw/cirrus_vga.c: Replace register_ioport_*

Replace all register_ioport_*() with the new Memory API.
This permits to use the new Memory stuff like listeners.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
[AF: Rebased onto hwaddr]
Signed-off-by: Andreas Färber <afaerber@suse.de>
serial: Replace register_ioport_*

Replace all register_ioport_*() with a MemoryRegion.
This permits to use the new Memory stuff like listeners.

For more flexibility, the IO address space is passed as an argument.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
[AF: Rebased onto serial split]
Signed-off-by: Andreas Färber <afaerber@suse.de>
hw/pc.c: Replace register_ioport_*

Replace all register_ioport_*() with portio_*() or a MemoryRegion.
This permits to use the new Memory stuff like listeners.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
[AF: Rebased onto hwaddr]
Signed-off-by: Andreas Färber <afaerber@suse.de>
hw/dma.c: Replace register_ioport_*

Replace all register_ioport_*() with the new Memory API functions.
This permits to use the new Memory stuff like listeners.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
[AF: Rebased onto hwaddr]
Signed-off-by: Andreas Färber <afaerber@suse.de>
xilinx_axienet: Implement R_IS behaviour

The interrupt status register R_IS is the standard clear-on-write behaviour.
This was unimplemented and defaulting to updating the register to the written
value. Implemented clear-on-write.

Reported-by: Jason Wu <huanyu@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
xilinx_uartlite: suppress "cannot receive message"

This message is not an error condition, its just informing the user that
the device is corking the uart traffic to not drop characters.

Reported-by: Jason Wu <huanyu@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
xilinx_uartlite: Accept input after rx FIFO pop

The device return false from the can receive function when the FIFO is
full. This mean the device should check for buffered input whenever a byte is
popped from the FIFO.

Reported-by: Jason Wu <huanyu@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
target-mips: Fix incorrect code and test for INSV

Content of register rs should be shifted for pos before applying a mask.
This change contains both fix for the instruction and to the existing test.

Signed-off-by: Petar Jovanovic <petarj@mips.com>
Reviewed-by: Eric Johnson <ericj@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
target-mips: Fix incorrect shift for SHILO and SHILOV

helper_shilo has not been shifting an accumulator value correctly for negative
values in 'shift' field. Minor optimization for shift=0 case.
This change also adds tests that will trigger issue and check for regressions.

Signed-off-by: Petar Jovanovic <petarj@mips.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Eric Johnson <ericj@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
exec: Advise huge pages for the TCG code gen buffer

After allocating 32MB or more contiguous memory, huge pages
would seem to be ideal.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
curses: Remove OpenBSD workaround

I removed the same sort of workaround for OpenBSD within the
configure script with commit 4dcc3f5876fa638d5c35bd47be3b717ea74cc2e7
but didn't bother to grep further to come across this same chunk
of code in the curses code itself. So the following diff removes
the same workaround chunk within the curses code.

Signed-off-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
tcg/tcg.h: Duplicate global TCG gen_opc_ arrays into TCGContext.

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
TCG: Use gen_opc_pc from context instead of global variable.

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
TCG: Use gen_opc_icount from context instead of global variable.

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
TCG: Use gen_opc_instr_start from context instead of global variable.

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
TCG: Remove unused global gen_opc_ arrays.

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
pixman: require 0.18.4 or newer

When older versions are found the internal pixman version is prefered.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
HACKING: List areas where we may rely on impdef C behaviour

Add a section to HACKING saying which version of the C spec
we use and describing the bits of implementation defined C
compiler behaviour which C code in QEMU is allowed to rely on.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>