We recently had a QEMU decodetree hackathon at our org focusing on moving
instructions to decodetree specification. I have consolidated the patches
generated out of this effort in this series. Though I have done a round
of review on all of them, might share some more review comments later.

The checkpatch.pl script emits false error for a couple of patches which
are of the following nature :

TRANS(STWAT, do_st_atomic, DEF_MEMOP(MO_UL))

static bool trans_LDAT(DisasContext *ctx, arg_LDAT *a)
                                                    ^
I see this happening in the last pointer argument in function
definitions after macros (like TRANS(..) in this case).

Gitlab CI : https://gitlab.com/rathc/qemu/-/pipelines/2776338293
This series was originally posted as an RFC. Link to the same :
https://lore.kernel.org/qemu-devel/20260520160728.2283628-1-rathc@linux.ibm.com/

Changes from RFC :
- Incorporated all the review comments received in the RFC as of 19th
August 2026.
- Retained all the 'Reviewed-by's and 'Tested-by's received.
- Patch 22 is a new patch introduced.

Aboorva Devarajan (3):
  target/ppc: Move vector merge instructions to decodetree
  target/ppc: Move vector pack instructions to decodetree
  target/ppc: Move GPR atomic load/store instructions to decodetree

Amit Machhiwal (2):
  target/ppc: Move fixed-point Shift insns to decodetree
  target/ppc: Move fixed-point byte-reversal store insns to decodetree

Chinmay Rath (1):
  target/ppc: make do_ea_calc_ra available for 32 bit builds

Mukesh Kumar Chaurasiya (IBM) (2):
  target/ppc: convert slw, srw instruction via decode spec
  target/ppc: convert sraw[i] instruction via decode spec

Nikhil Kumar Singh (3):
  target/ppc: Migrate extswsli to decodetree
  target/ppc: Migrate atomic loads to decodetree
  target/ppc: Convert cache instructions to decodetree

Ojaswin Mujoo (7):
  target/ppc: Move isync instruction to decodetree.
  target/ppc: Convert b{a, l, la} to decode tree
  target/ppc: move various conditional branch insns to decodetree
  target/ppc: Fix TRANS* macro variadic arguments handling
  target/ppc: Move wait instruction to decodetree
  target/ppc: Move sleep & friends to decodetree
  target/ppc: Refactor sleep and its variants to use a common helper

Shivang Upadhyay (4):
  target/ppc: Move Condition Register access instructions to decodetree.
  target/ppc: Move Condition Register logical instructions to
    decodetree.
  target/ppc: Move Fixed-Point Load/Store String instructions to
    decodetree.
  target/ppc: Move VMX integer arithmetic and BCD instructions to
    decodetree.

Shivani Nittor (1):
  target/ppc: Convert mcrf to decode tree

Tanushree Shah (2):
  target/ppc: Move rlwimi, rlwinm instructions to decodetree
  target/ppc: Move lmw, stmw instructions to decodetree

Utkarsh Verma (1):
  target/ppc: Move st{b, h, w, d, q}cx instructions to decodetree

Vishal Chourasia (3):
  target/ppc: Move mfmsr, mtmsr[d] instructions to decodetree
  target/ppc: Move byte-reverse instructions to decodetree
  target/ppc: Move system call and rfi instructions to decodetree

 target/ppc/helper.h                           |  100 +-
 target/ppc/insn32.decode                      |  254 ++
 target/ppc/int_helper.c                       |   76 +-
 target/ppc/internal.h                         |    7 -
 target/ppc/mem_helper.c                       |   18 +-
 target/ppc/tcg-excp_helper.c                  |   10 +-
 target/ppc/translate.c                        | 2289 +++--------------
 target/ppc/translate/branch-impl.c.inc        |  181 ++
 target/ppc/translate/fixedpoint-impl.c.inc    |  936 +++++++
 target/ppc/translate/misc-impl.c.inc          |  170 ++
 .../ppc/translate/processor-ctrl-impl.c.inc   |   30 +
 target/ppc/translate/storage-ctrl-impl.c.inc  |  117 +
 target/ppc/translate/vmx-impl.c.inc           |  373 ++-
 target/ppc/translate/vmx-ops.c.inc            |   41 -
 14 files changed, 2362 insertions(+), 2240 deletions(-)

-- 
2.55.0