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[v4,0/4] Add BHRB Facility Support

Message ID 20240328192356.2144086-1-milesg@linux.vnet.ibm.com
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Series Add BHRB Facility Support | expand

Message

Glenn Miles March 28, 2024, 7:23 p.m. UTC 
This is a series of patches for adding support for the Branch History
Rolling Buffer (BHRB) facility.  This was added to the Power ISA
starting with version 2.07.  Changes were subsequently made in version
3.1 to limit BHRB recording to instructions run in problem state only
and to add a control bit to disable recording (MMCRA[BHRBRD]).

Changes from previous version:
 - Rebased on latest master head (req'd changing cpu_env to tcg_env)
 - Fixed compiler errors for non ppc64-softmmu targets
 - Fixed compiler errors from compiling on 32-bit platforms

Glenn Miles (4):
  target/ppc: Add new hflags to support BHRB
  target/ppc: Add recording of taken branches to BHRB
  target/ppc: Add clrbhrb and mfbhrbe instructions
  target/ppc: Add migration support for BHRB

 target/ppc/cpu.h                       |  24 ++++++
 target/ppc/cpu_init.c                  |  41 +++++++++-
 target/ppc/helper.h                    |   8 ++
 target/ppc/helper_regs.c               |  37 +++++++++
 target/ppc/insn32.decode               |   8 ++
 target/ppc/machine.c                   |  23 +++++-
 target/ppc/misc_helper.c               |  50 ++++++++++++
 target/ppc/power8-pmu-regs.c.inc       |   5 ++
 target/ppc/power8-pmu.c                |  48 +++++++++++-
 target/ppc/power8-pmu.h                |  11 ++-
 target/ppc/spr_common.h                |   1 +
 target/ppc/translate.c                 | 102 +++++++++++++++++++++++--
 target/ppc/translate/bhrb-impl.c.inc   |  43 +++++++++++
 target/ppc/translate/branch-impl.c.inc |   2 +-
 14 files changed, 386 insertions(+), 17 deletions(-)
 create mode 100644 target/ppc/translate/bhrb-impl.c.inc