[PATCH RESEND v3 0/8] VDIV/VMOD Implementation

[Lucas Mateus Castro(alqotel)]

From: "Lucas Mateus Castro (alqotel)" <lucas.araujo@eldorado.org.br>

Based-on: https://gitlab.com/danielhb/qemu/-/tree/ppc-next

This patch series is an implementation of the vector divide, vector
divide extended and vector modulo instructions from PowerISA 3.1. These
are the last instructions left to be implemented from 3.1

For this resend I've rebased the patch on ppc-next, dropped one patch
that was already added as part of another patch series and added
Resolves to the last patch to the issue of implementing the ISA
instructions.

The first patch are Matheus' patch, used here since the divs256 and
divu256 functions use int128_urshift.

Patches without review: 1, 3, 4 and 7

v3 changes:
    - Divided DO_VDIV_VMOD macro in 4 different new macros
    - Turned TRANS_VDIV_VMOD into a function and the instructions are
      now implemented with the TRANS macro and do_vdiv_vmod function
    - Moved clz128 to int128.h

v2 changes:
    - Dropped int128_lshift patch
    - Added missing int_min/-1 check
    - Changed invalid division to a division by 1
    - Created new macro responsible for invalid division check
      (replacing DIV_VEC, REM_VEC and the check in dives_i32/diveu_i32)
    - Turned GVecGen3 array into single element

Lucas Mateus Castro (alqotel) (8):
  target/ppc: Implemented vector divide instructions
  target/ppc: Implemented vector divide quadword
  target/ppc: Implemented vector divide extended word
  host-utils: Implemented unsigned 256-by-128 division
  host-utils: Implemented signed 256-by-128 division
  target/ppc: Implemented remaining vector divide extended
  target/ppc: Implemented vector module word/doubleword
  target/ppc: Implemented vector module quadword

 include/qemu/host-utils.h           |   3 +
 include/qemu/int128.h               |  38 ++++++
 target/ppc/helper.h                 |   8 ++
 target/ppc/insn32.decode            |  23 ++++
 target/ppc/int_helper.c             | 106 ++++++++++++++++
 target/ppc/translate/vmx-impl.c.inc | 151 +++++++++++++++++++++++
 util/host-utils.c                   | 180 ++++++++++++++++++++++++++++
 7 files changed, 509 insertions(+)

-- 
2.31.1