[qemu-s390x] [PATCH v3 00/32] s390x/tcg: Vector Instruction Support Part 1

[David Hildenbrand]

This is the first part of vector instruction support for s390x. Parts
will be sent and reviewed piece by piece.

Part 1: Vector Support Instructions
Part 2: Vector Integer Instructions
Part 3: Vector String Instructions
Part 4: Vector Floating-Point Instructions

The current state can be found at (kept updated):
    https://github.com/davidhildenbrand/qemu/tree/vx
It is based on
    https://github.com/cohuck/qemu/tree/s390-next

With the current state I can boot Linux kernel + user space compiled with
SIMD support. This allows to boot distributions compiled exclusively for
z13, requiring SIMD support. Also, I have a growing set of tests for
kvm-unit-tests and tests/tcg which I cross-test on a real s390x system.

In this part, the basic infrastructure and all Vector Support Instructions
introduced with the "Vector Facility" are added. The Vector Extension
Facilities are not considered for now.

We make use of the existing gvec expansion + ool (out-of-line) support.
This will be heavily used especially for part 2 (Integer Instructions)
where we can actually reuse quite some existing gvec expansions.

v2 -> v3:
- "s390x/tcg: Utilities for vector instruction helpers"
-- inline helpers in header file
- "s390x/tcg: Implement VECTOR LOAD MULTIPLE"
-- optimize loading of last element
- "s390x/tcg: Implement VECTOR PACK *"
-- make the static funtion arrays const
- "s390x/tcg: Implement VECTOR REPLICATE"
-- use "tcg_gen_gvec_dup_mem"
- "s390x/tcg: Provide probe_write helper"
-- Add check for CONFIG_USER_ONLY
-- Optimize calculation of length
- Added r-b's

v1 -> v2:
- Basically address all wonderful review comments from Richard (too many
  to name them all)
- Probe write access to get rid of FIXMEs
- Heavily rework "s390x/tcg: Implement VECTOR PACK *"
-- Process cc and !cc separately.
-- Helper for VPK
- Don't use a temporary vector register (for now)
- Drop load_vec_element() and store_vec_element()
- Use ES_* instead of MO_*, will come in handy when we use ES_128 later
- .... many many other minor things

David Hildenbrand (32):
  s390x/tcg: Define vector instruction formats
  s390x/tcg: Check vector register instructions at central point
  s390x/tcg: Utilities for vector instruction helpers
  s390x/tcg: Implement VECTOR GATHER ELEMENT
  s390x/tcg: Implement VECTOR GENERATE BYTE MASK
  s390x/tcg: Implement VECTOR GENERATE MASK
  s390x/tcg: Implement VECTOR LOAD
  s390x/tcg: Implement VECTOR LOAD AND REPLICATE
  s390x/tcg: Implement VECTOR LOAD ELEMENT
  s390x/tcg: Implement VECTOR LOAD ELEMENT IMMEDIATE
  s390x/tcg: Implement VECTOR LOAD GR FROM VR ELEMENT
  s390x/tcg: Implement VECTOR LOAD LOGICAL ELEMENT AND ZERO
  s390x/tcg: Implement VECTOR LOAD MULTIPLE
  s390x/tcg: Implement VECTOR LOAD TO BLOCK BOUNDARY
  s390x/tcg: Implement VECTOR LOAD VR ELEMENT FROM GR
  s390x/tcg: Implement VECTOR LOAD VR FROM GRS DISJOINT
  s390x/tcg: Implement VECTOR LOAD WITH LENGTH
  s390x/tcg: Implement VECTOR MERGE (HIGH|LOW)
  s390x/tcg: Implement VECTOR PACK *
  s390x/tcg: Implement VECTOR PERMUTE
  s390x/tcg: Implement VECTOR PERMUTE DOUBLEWORD IMMEDIATE
  s390x/tcg: Implement VECTOR REPLICATE
  s390x/tcg: Implement VECTOR REPLICATE IMMEDIATE
  s390x/tcg: Implement VECTOR SCATTER ELEMENT
  s390x/tcg: Implement VECTOR SELECT
  s390x/tcg: Implement VECTOR SIGN EXTEND TO DOUBLEWORD
  s390x/tcg: Provide probe_write_access helper
  s390x/tcg: Implement VECTOR STORE
  s390x/tcg: Implement VECTOR STORE ELEMENT
  s390x/tcg: Implement VECTOR STORE MULTIPLE
  s390x/tcg: Implement VECTOR STORE WITH LENGTH
  s390x/tcg: Implement VECTOR UNPACK *

 target/s390x/Makefile.objs      |   1 +
 target/s390x/cpu.h              |   7 +
 target/s390x/helper.h           |  21 +
 target/s390x/insn-data.def      |  82 +++
 target/s390x/insn-format.def    |  25 +
 target/s390x/internal.h         |   2 +
 target/s390x/mem_helper.c       |  25 +
 target/s390x/translate.c        |  61 ++-
 target/s390x/translate_vx.inc.c | 935 ++++++++++++++++++++++++++++++++
 target/s390x/vec.h              | 101 ++++
 target/s390x/vec_helper.c       | 193 +++++++
 11 files changed, 1452 insertions(+), 1 deletion(-)
 create mode 100644 target/s390x/translate_vx.inc.c
 create mode 100644 target/s390x/vec.h
 create mode 100644 target/s390x/vec_helper.c

-- 
2.17.2