[v4,0/4] target-riscv: support vector extension part 1

Message

LIU Zhiwei Feb. 10, 2020, 8:12 a.m. UTC

This is the first part of v4 patchset. The changelog of v4 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:

v4
  * adjust max vlen to 512 bits.
  * check maximum on elen(64bits).
  * check minimum on vlen(128bits).
  * check if rs1 is x0 in vsetvl/vsetvli.
  * use gen_goto_tb in vsetvli instead of exit_tb.
  * fixup fetch vlmax from rs2, not env->vext.type.
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):
  target/riscv: add vector extension field in CPURISCVState
  target/riscv: configure and turn on vector extension from command line
  target/riscv: support vector extension csr
  target/riscv: add vector configure instruction

 MAINTAINERS                             |  1 +
 target/riscv/Makefile.objs              |  2 +-
 target/riscv/cpu.c                      | 48 ++++++++++++++-
 target/riscv/cpu.h                      | 82 ++++++++++++++++++++++---
 target/riscv/cpu_bits.h                 | 15 +++++
 target/riscv/csr.c                      | 72 +++++++++++++++++++++-
 target/riscv/helper.h                   |  2 +
 target/riscv/insn32.decode              |  5 ++
 target/riscv/insn_trans/trans_rvv.inc.c | 69 +++++++++++++++++++++
 target/riscv/translate.c                | 17 ++++-
 target/riscv/vector_helper.c            | 49 +++++++++++++++
 11 files changed, 346 insertions(+), 16 deletions(-)
 create mode 100644 target/riscv/insn_trans/trans_rvv.inc.c
 create mode 100644 target/riscv/vector_helper.c