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Merge remote-tracking branch 'remotes/riscv/tags/riscv-qemu-2.13-pull-20180506' into staging
RISC-V: QEMU 2.13 Privileged ISA emulation updates
Several code cleanups, minor specification conformance changes,
fixes to make ROM read-only and add device-tree size checks.
* Honour privileged ISA v1.10 counter enable CSRs.
* Implements WARL behavior for CSRs that don't support writes
* Past behavior of raising traps was non-conformant
with the RISC-V Privileged ISA Specification v1.10.
* Allow S-mode access to sstatus.MXR when priv ISA >= v1.10
* Sets mtval/stval to zero on exceptions without addresses
* Past behavior of leaving the last value was non-conformant
with the RISC-V Privileged ISA Specition v1.10. mtval/stval
must be set on all exceptions; to zero if not supported.
* Make ROMs read-only and implement device-tree size checks
* Uses memory_region_init_rom and rom_add_blob_fixed_as
* Adds hexidecimal instruction bytes to disassembly output.
* Fixes missing break statement for rv128 disassembly.
* Several code cleanups
* Replacing hard-coded constants with enums
* Dead-code elimination
This is an incremental pull that contains 20 reviewed changes out
of 38 changes currently queued in the qemu-2.13-for-upstream branch.
# gpg: Signature made Sun 06 May 2018 00:27:37 BST
# gpg: using DSA key 6BF1D7B357EF3E4F
# gpg: Good signature from "Michael Clark <michaeljclark@mac.com>"
# gpg: aka "Michael Clark <mjc@sifive.com>"
# gpg: aka "Michael Clark <michael@metaparadigm.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 7C99 930E B17C D8BA 073D 5EFA 6BF1 D7B3 57EF 3E4F
* remotes/riscv/tags/riscv-qemu-2.13-pull-20180506:
RISC-V: Mark ROM read-only after copying in code
RISC-V: No traps on writes to misa,minstret,mcycle
RISC-V: Make mtvec/stvec ignore vectored traps
RISC-V: Add mcycle/minstret support for -icount auto
RISC-V: Use [ms]counteren CSRs when priv ISA >= v1.10
RISC-V: Allow S-mode mxr access when priv ISA >= v1.10
RISC-V: Clear mtval/stval on exceptions without info
RISC-V: Hardwire satp to 0 for no-mmu case
RISC-V: Update E and I extension order
RISC-V: Remove erroneous comment from translate.c
RISC-V: Remove EM_RISCV ELF_MACHINE indirection
RISC-V: Make virt header comment title consistent
RISC-V: Make some header guards more specific
RISC-V: Fix missing break statement in disassembler
RISC-V: Include instruction hex in disassembly
RISC-V: Remove unused class definitions
RISC-V: Remove identity_translate from load_elf
RISC-V: Use ROM base address and size from memmap
RISC-V: Make virt board description match spike
RISC-V: Replace hardcoded constants with enum values
Signed-off-by: 
Peter Maydell <peter.maydell@linaro.org>