[PATCH 00/18] Initial Prefixed Instruction support

[Jordan Niethe]

A future revision of the ISA will introduce prefixed instructions. A
prefixed instruction is composed of a 4-byte prefix followed by a
4-byte suffix.

All prefixes have the major opcode 1. A prefix will never be a valid
word instruction. A suffix may be an existing word instruction or a new
instruction.

The new instruction formats are:
    * Eight-Byte Load/Store Instructions
    * Eight-Byte Register-to-Register Instructions
    * Modified Load/Store Instructions
    * Modified Register-to-Register Instructions

This series enables prefixed instructions and extends the instruction
emulation to support them. Then the places where prefixed instructions
might need to be emulated are updated.

A future series will add prefixed instruction support to guests running
in KVM.

Alistair Popple (1):
  powerpc: Enable Prefixed Instructions

Jordan Niethe (17):
  powerpc: Add BOUNDARY SRR1 bit for future ISA version
  powerpc: Add PREFIXED SRR1 bit for future ISA version
  powerpc: Rename Bit 35 of SRR1 to indicate new purpose
  powerpc sstep: Prepare to support prefixed instructions
  powerpc sstep: Add support for prefixed integer load/stores
  powerpc sstep: Add support for prefixed floating-point load/stores
  powerpc sstep: Add support for prefixed VSX load/stores
  powerpc sstep: Add support for prefixed fixed-point arithmetic
  powerpc: Support prefixed instructions in alignment handler
  powerpc/traps: Check for prefixed instructions in
    facility_unavailable_exception()
  powerpc/xmon: Add initial support for prefixed instructions
  powerpc/xmon: Dump prefixed instructions
  powerpc/kprobes: Support kprobes on prefixed instructions
  powerpc/uprobes: Add support for prefixed instructions
  powerpc/hw_breakpoints: Initial support for prefixed instructions
  powerpc: Add prefix support to mce_find_instr_ea_and_pfn()
  powerpc/fault: Use analyse_instr() to check for store with updates to
    sp

 arch/powerpc/include/asm/kprobes.h    |   5 +-
 arch/powerpc/include/asm/ppc-opcode.h |   3 +
 arch/powerpc/include/asm/reg.h        |   7 +-
 arch/powerpc/include/asm/sstep.h      |   8 +-
 arch/powerpc/include/asm/uaccess.h    |  30 +++++
 arch/powerpc/include/asm/uprobes.h    |  18 ++-
 arch/powerpc/kernel/align.c           |   8 +-
 arch/powerpc/kernel/dt_cpu_ftrs.c     |  23 ++++
 arch/powerpc/kernel/hw_breakpoint.c   |   8 +-
 arch/powerpc/kernel/kprobes.c         |  46 +++++--
 arch/powerpc/kernel/mce_power.c       |   6 +-
 arch/powerpc/kernel/optprobes.c       |  31 +++--
 arch/powerpc/kernel/optprobes_head.S  |   6 +
 arch/powerpc/kernel/traps.c           |  18 ++-
 arch/powerpc/kernel/uprobes.c         |   4 +-
 arch/powerpc/kvm/book3s_hv_nested.c   |   2 +-
 arch/powerpc/kvm/book3s_hv_rm_mmu.c   |   2 +-
 arch/powerpc/kvm/emulate_loadstore.c  |   2 +-
 arch/powerpc/lib/sstep.c              | 180 +++++++++++++++++++++++++-
 arch/powerpc/lib/test_emulate_step.c  |  30 ++---
 arch/powerpc/mm/fault.c               |  39 ++----
 arch/powerpc/xmon/xmon.c              | 132 +++++++++++++++----
 22 files changed, 490 insertions(+), 118 deletions(-)

-- 
2.20.1