Signed-off-by: NRichard Henderson <rth@twiddle.net>

Signed-off-by: NRichard Henderson <rth@twiddle.net>

For linux, page 0 is mapped as an execute-only gateway.  A gateway
page is a special bit in the page table that allows a B,GATE insn
within that page to raise processor permissions.  This is how system
calls are implemented for HPPA.

Rather than actually map anything here, or handle permissions at all,
implement the semantics of the actual linux syscall entry points.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Signed-off-by: NRichard Henderson <rth@twiddle.net>

Signed-off-by: NRichard Henderson <rth@twiddle.net>

The HPPA cpu has a unique form of predicated execution in which
almost any instruction can set the PSW[N] (or "nullify") bit,
which suppresses execution (and even decoding) of the following
instruction.  Execution of a nullified insn clears the PSW[N] bit.

This adds a generic framework for branching over nullified insns,
or for sufficiently simple insns, transforming the writeback of
the result to a conditional move.  In the process, we want to be
able to represent PSW[N] as a TCG condition, which implies management
of the related tcg temps.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

This is just about the minimum required to enable compilation
without actually executing any instructions.  This contains the
HPPACPU structure and the required callbacks, the gdbstub, the
basic translation loop, and a translate_one function that always
results in an illegal instruction.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Like the original MIPS, HPPA has the MSB of an SNaN set.
However, it has different rules for silencing an SNaN:
(1) msb is cleared and (2) msb-1 must be set if the fraction
is now zero, and (implementation defined) may be set always.
I haven't checked real hardware but chose the set always
alternative because it's easy and within spec.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Including support for the atomic memory op syscalls.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Signed-off-by: NRichard Henderson <rth@twiddle.net>

The cpu.h structure that these manipulate hasn't been defined
yet, but we haven't enabled compilation yet either.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Signed-off-by: NRichard Henderson <rth@twiddle.net>

Which is primarily a re-definition of errno numbers.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Signed-off-by: NRichard Henderson <rth@twiddle.net>

Signed-off-by: NRichard Henderson <rth@twiddle.net>

Split this out into a "cpu/sockbits.h" file now,
like we ought to do for all of the other targets.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Add F_GETLK, F_SETLK, F_SETLKW, F_GETOWN, F_SETOWN, F_SETSIG, F_GETSIG,
F_GETLK64, F_SETLK64 and F_SETLKW64 for hppa.
Signed-off-by: NHelge Deller <deller@gmx.de>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

With definitions for generic, alpha and mips taken from 4.9-rc2.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Mirror syscall_defs.h for the element type of struct timeval
and struct timespec, even though that's not 100% accurate for
each guest.
Signed-off-by: NHelge Deller <deller@gmx.de>
[rth: Changed the MK_ARRAY types as per above; added ioctl.h entries.]
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Some architectures (ppc, alpha, sparc, parisc, sh and xtensa) define the
BSD TIOCSTART and TIOCSTOP ioctls in their kernel headers to provide
compatibility to other operating systems.

Those ioctls are not implemented in Linux, nevertheless, bash will use
this ioctl if it's available on those architectures.

To avoid false warnings, add code to simply ignore those ioctls.
Signed-off-by: NHelge Deller <deller@gmx.de>
Message-Id: <20161206152403.GA6651@ls3530>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

HPPA is a (the) stack-grows-up target, and supporting that requires
rearranging how we compute addresses while laying out the initial
program stack.  In addition, hppa32 requires 64-byte stack alignment
so parameterize that as well.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

This reverts commit d41f3c3c.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

First set of s390x patches for 2.9:
- rework of the zpci code, giving us proper multibus support
- introduction of the 2.9 machine
- fixes and improvements

# gpg: Signature made Fri 20 Jan 2017 09:11:58 GMT
# gpg:                using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20170120-v2:
  virtio-ccw: fix ring sizing
  s390x/pci: merge msix init functions
  s390x/pci: handle PCIBridge bus number
  s390x/pci: use hashtable to look up zpci via fh
  s390x/pci: PCI multibus bridge handling
  s390x/pci: optimize calling s390_get_phb()
  s390x/pci: change the device array to a list
  s390x/pci: dynamically allocate iommu
  s390x/pci: make S390PCIIOMMU inherit Object
  s390x/kvm: use kvm_gsi_routing_enabled in flic
  s390x: add compat machine for 2.9
  s390x: remove double compat statement
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

# gpg: Signature made Fri 20 Jan 2017 02:58:57 GMT
# gpg:                using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  tap: fix memory leak on failure in net_init_tap()
  hw/pci: use-after-free in pci_nic_init_nofail when nic device fails to initialize
  hw/net/dp8393x: Avoid unintentional sign extensions on addresses
  m68k: QOMify the MCF Fast Ethernet Controller device
  net: optimize checksum computation
  docs: Fix description of the sentence
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

virtio, vhost, pc: fixes, features

writeable fw cfg blobs which will be used for guest to host
communication
fixes and cleanups all over the place
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 19 Jan 2017 21:08:04 GMT
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  virtio: force VIRTIO_F_IOMMU_PLATFORM
  virtio: fix up max size checks
  vhost: drop VHOST_F_DEVICE_IOTLB
  update-linux-headers.sh: support __bitwise
  virtio_crypto: header update
  pci_regs: update to latest linux
  virtio-mmio: switch to linux headers
  virtio_mmio: add standard header file
  virtio: drop an obsolete comment
  fw-cfg: bump "x-file-slots" to 0x20 for 2.9+ machine types
  pc: Add 2.9 machine-types
  fw-cfg: turn FW_CFG_FILE_SLOTS into a device property
  fw-cfg: support writeable blobs
  vhost_net: device IOTLB support
  virtio: disable notifications again after poll succeeded
  Revert "virtio: turn vq->notification into a nested counter"
  virtio-net: enable ioeventfd even if vhost=off
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Error reporting patches for 2017-01-19

# gpg: Signature made Thu 19 Jan 2017 14:51:17 GMT
# gpg:                using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-error-2017-01-19:
  error: Report certain hints on stderr when no monitor
  error: error_setg_errno(): errno gets preserved
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target-arm queue:
 * support virtualization in GICv3
 * enable EL2 in AArch64 CPU models
 * allow EL2 to be enabled on 'virt' board via -machine virtualization=on
 * aspeed: SMC improvements
 * m25p80: support die erase command
 * m25p80: Add Quad Page Program 4byte
 * m25p80: Improve 1GiB Micron flash definition
 * arm: Uniquely name imx25 I2C buses

# gpg: Signature made Fri 20 Jan 2017 11:31:53 GMT
# gpg:                using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20170120: (36 commits)
  hw/arm/virt: Add board property to enable EL2
  target-arm: Enable EL2 feature bit on A53 and A57
  target/arm/psci.c: If EL2 implemented, start CPUs in EL2
  hw/arm/virt-acpi-build: use SMC if booting in EL2
  hw/arm/virt: Support using SMC for PSCI
  hw/intc/arm_gicv3: Implement EL2 traps for CPU i/f regs
  hw/intc/arm_gicv3: Implement gicv3_cpuif_virt_update()
  hw/intc/arm_gicv3: Implement ICV_ registers EOIR and IAR
  hw/intc/arm_gicv3: Implement ICV_ HPPIR, DIR and RPR registers
  hw/intc/arm_gicv3: Implement ICV_ registers which are just accessors
  hw/intc/arm_gicv3: Add accessors for ICH_ system registers
  hw/intc/gicv3: Add data fields for virtualization support
  hw/intc/gicv3: Add defines for ICH system register fields
  target-arm: Add ARMCPU fields for GIC CPU i/f config
  hw/arm/virt: Wire VIRQ, VFIQ, maintenance irq lines from GIC to CPU
  target-arm: Expose output GPIO line for VCPU maintenance interrupt
  hw/intc/arm_gic: Add external IRQ lines for VIRQ and VFIQ
  hw/intc/arm_gicv3: Add external IRQ lines for VIRQ and VFIQ
  hw/arm/virt-acpi - reserve ECAM space as PNP0C02 device
  arm: virt: Fix segmentation fault when specifying an unsupported CPU
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Add a board level property to the virt board which will
enable EL2 on the CPU if the user asks for it. The
default is not to provide EL2. If EL2 is enabled then
we will use SMC as our PSCI conduit, and report the
virtualization support in the GICv3 device tree node
and the ACPI tables.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NAndrew Jones <drjones@redhat.com>
Reviewed-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1483977924-14522-19-git-send-email-peter.maydell@linaro.org

Enable the ARM_FEATURE_EL2 bit on Cortex-A52 and
Cortex-A57, since this is all now sufficiently implemented
to work with the GICv3. We provide the usual CPU property
to disable it for backwards compatibility with the older
virt boards.

In this commit, we disable the EL2 feature on the
virt and ZynpMP boards, so there is no overall effect.
Another commit will expose a board-level property to
allow the user to enable EL2.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NAndrew Jones <drjones@redhat.com>
Reviewed-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: NAlistair Francis <alistair.francis@xilinx.com>
Message-id: 1483977924-14522-18-git-send-email-peter.maydell@linaro.org

The PSCI spec states that a CPU_ON call should cause the new
CPU to be started in the highest implemented Non-secure
exception level. We were incorrectly starting it at the
exception level of the caller, which happens to be correct
if EL2 is not implemented. Implement the correct logic
as described in the PSCI 1.0 spec section 6.4:
 * if EL2 exists and SCR_EL3.HCE is set: start in EL2
 * otherwise start in EL1
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: NAndrew Jones <drjones@redhat.com>
Tested-by: NAndrew Jones <drjones@redhat.com>
Message-id: 1483977924-14522-17-git-send-email-peter.maydell@linaro.org

Signed-off-by: NAndrew Jones <drjones@redhat.com>
Acked-by: NAlistair Francis <alistair.francis@xilinx.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-16-git-send-email-peter.maydell@linaro.org
[PMM: look at vms->psci_conduit rather than vms->virt
 to decide whether to use HVC or SMC, and report no
 PSCI support at all for the 'PSCI disabled' case]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

If we are giving the guest a CPU with EL2, it is likely to
want to use the HVC instruction itself, for instance for
providing PSCI to inner guest VMs. This makes using HVC
as the PSCI conduit for the outer QEMU a bad idea. We will
want to use SMC instead is this case: this makes sense
because QEMU's PSCI implementation is effectively an
emulation of functionality provided by EL3 firmware.

Add code to support selecting the PSCI conduit to use,
rather than hardcoding use of HVC.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: NAndrew Jones <drjones@redhat.com>
Message-id: 1483977924-14522-15-git-send-email-peter.maydell@linaro.org

Implement the architecturally required traps from NS EL1
to EL2 for the CPU interface registers. These fall into
several different groups:
 * group-0-only registers all trap if ICH_HRC_EL2.TALL0 is set
   (exactly the registers covered by gicv3_fiq_access())
 * group-1-only registers all trap if ICH_HRC_EL2.TALL1 is set
   (exactly the registers covered by gicv3_irq_access())
 * DIR traps if ICH_HCR_EL2.TC or ICH_HCR_EL2.TDIR are set
 * PMR, RPR, CTLR trap if ICH_HCR_EL2.TC is set
 * SGI0R, SGI1R, ASGI1R trap if ICH_HCR_EL2.TC is set or
   if HCR_EL2.IMO or HCR_EL2.FMO are set

We split DIR and the SGI registers out into their own access
functions, leaving the existing gicv3_irqfiq_access() just
handling PMR, RPR and CTLR.

This commit doesn't implement support for trapping on
HSTR_EL2.T12 for the 32-bit registers, as we don't implement
any of those per-coprocessor trap bits currently and
probably will want to do those in some more centralized way.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-14-git-send-email-peter.maydell@linaro.org

Implement the function which signals virtual interrupts to the
CPU as appropriate following CPU interface state changes.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-13-git-send-email-peter.maydell@linaro.org

Implement the two remaining ICV_ registers: EOIR and IAR.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-12-git-send-email-peter.maydell@linaro.org

Implement the the ICV_ registers HPPIR, DIR and RPR.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-11-git-send-email-peter.maydell@linaro.org

If the HCR_EL2.IMO or FMO bits are set, accesses to ICC_
system registers are redirected to be accesses to ICV_
registers (the guest-visible interface to the virtual
interrupt controller). Implement this behaviour for the
ICV_ registers which are simple accessors to the underlying
register state.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-10-git-send-email-peter.maydell@linaro.org

The GICv3 virtualization interface includes system registers
accessible only to the hypervisor which form the control
interface for interrupt virtualization. Implement these
registers.

The function gicv3_cpuif_virt_update() which determines
whether it needs to signal vIRQ, vFIQ or a maintenance
interrupt is introduced here as a stub function -- its
implementation will be added in a subsequent commit.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-9-git-send-email-peter.maydell@linaro.org

As the first step in adding support for the virtualization
extensions to the GICv3 emulation:
 * add the necessary data fields to the state structures
 * add the fields to the migration state, as a subsection
   which is only present if virtualization is enabled

The use of a subsection means we retain migration
compatibility as EL2 is not enabled on any CPUs currently.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NAlistair Francis <alistair.francis@xilinx.com>
Message-id: 1483977924-14522-8-git-send-email-peter.maydell@linaro.org