[PATCH v3 0/4] RISC-V: support vector extension part 1

[LIU Zhiwei]

This is the first part of v3 patchset. The changelog of v3 is only coverd
the part1.

Features:
  * support specification riscv-v-spec-0.7.1.
  * support basic vector extension.                                             
   
  * support Zvlsseg.                                                            
   
  * support Zvamo.                                                              
   
  * not support Zvediv as it is changing.
  * fixed SLEN 128bit.
  * element width support 8bit, 16bit, 32bit, 64bit.

Changelog:
v3
  * support VLEN configure from qemu command line.
  * support ELEN configure from qemu command line.
  * support vector specification version configure from qemu command line.
  * only default on for "any" cpu, others turn on from command line.
  * use a continous memory block for vector register description.
V2
  * use float16_compare{_quiet}
  * only use GETPC() in outer most helper
  * add ctx.ext_v Property

LIU Zhiwei (4):
  RISC-V: add vector extension field in CPURISCVState
  RISC-V: configure and turn on vector extension from command line
  RISC-V: support vector extension csr
  RISC-V: add vector extension configure instruction

 target/riscv/Makefile.objs              |  2 +-
 target/riscv/cpu.c                      | 43 +++++++++++-
 target/riscv/cpu.h                      | 77 ++++++++++++++++++---
 target/riscv/cpu_bits.h                 | 15 ++++
 target/riscv/csr.c                      | 92 +++++++++++++++++--------
 target/riscv/helper.h                   |  2 +
 target/riscv/insn32.decode              |  5 ++
 target/riscv/insn_trans/trans_rvv.inc.c | 52 ++++++++++++++
 target/riscv/translate.c                | 17 ++++-
 target/riscv/vector_helper.c            | 51 ++++++++++++++
 10 files changed, 314 insertions(+), 42 deletions(-)
 create mode 100644 target/riscv/insn_trans/trans_rvv.inc.c
 create mode 100644 target/riscv/vector_helper.c

-- 
2.23.0