Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20180814' into...

Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20180814' into staging

target-arm queue:
 * Implement more of ARMv6-M support
 * Support direct execution from non-RAM regions;
   use this to implmeent execution from small (<1K) MPU regions
 * GICv2: implement the virtualization extensions
 * support a virtualization-capable GICv2 in the virt and
   xlnx-zynqmp boards
 * arm: Fix return code of arm_load_elf() so we can detect
   failure to load the file correctly
 * Implement HCR_EL2.TGE ("trap general exceptions") bit
 * Implement tailchaining for M profile cores
 * Fix bugs in SVE compare, saturating add/sub, WHILE, MOVZ

# gpg: Signature made Tue 14 Aug 2018 17:23:38 BST
# gpg:                using RSA key 3C2525ED14360CDE
# 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-20180814: (45 commits)
  target/arm: Fix typo in helper_sve_movz_d
  target/arm: Reorganize SVE WHILE
  target/arm: Fix typo in do_sat_addsub_64
  target/arm: Fix sign of sve_cmpeq_ppzw/sve_cmpne_ppzw
  target/arm: Implement tailchaining for M profile cores
  target/arm: Restore M-profile CONTROL.SPSEL before any tailchaining
  target/arm: Initialize exc_secure correctly in do_v7m_exception_exit()
  target/arm: Improve exception-taken logging
  target/arm: Treat SCTLR_EL1.M as if it were zero when HCR_EL2.TGE is set
  target/arm: Provide accessor functions for HCR_EL2.{IMO, FMO, AMO}
  target/arm: Honour HCR_EL2.TGE when raising synchronous exceptions
  target/arm: Honour HCR_EL2.TGE and MDCR_EL2.TDE in debug register access checks
  target/arm: Mask virtual interrupts if HCR_EL2.TGE is set
  arm: Fix return code of arm_load_elf
  arm/virt: Add support for GICv2 virtualization extensions
  xlnx-zynqmp: Improve GIC wiring and MMIO mapping
  intc/arm_gic: Improve traces
  intc/arm_gic: Implement maintenance interrupt generation
  intc/arm_gic: Implement gic_update_virt() function
  intc/arm_gic: Implement the virtual interface registers
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>