This patchset implements the vector extension for RISC-V on QEMU.
You can also find the patchset and all *test cases* in
my repo(https://github.com/romanheros/qemu.git branch:vector-upstream-v8).
All the test cases are in the directory qemu/tests/riscv/vector/. They are
riscv64 linux user mode programs.
You can test the patchset by the script qemu/tests/riscv/vector/runcase.sh.
Features:
* support specification riscv-v-spec-0.7.1.(https://github.com/riscv/riscv-v-spec/releases/tag/0.7.1/)
* support basic vector extension.
* support Zvlsseg.
* support Zvamo.
* not support Zvediv as it is changing.
* SLEN always equals VLEN.
* element width support 8bit, 16bit, 32bit, 64bit.
Changelog:
v8
* support different float rounding modes for vector instructions.
* use lastest released TCG GVEC DUP IR.
* set RV_VLEN_MAX to 256 bits, as GVEC IR uses simd_desc.
v7
* move vl == 0 check to translation time by add a global cpu_vl.
* implement vector element inline load and store function by TCG IR.
* based on vec_element_load(store), implement some permutation instructions.
* implement rsubs GVEC IR.
* fixup vsmul, vmfne, vfmerge, vslidedown.
* some other small bugs and indentation errors.
v6
* use gvec_dup Gvec IR to accellerate move and merge.
* a better way to implement fixed point instructions.
* a global check when vl == 0.
* limit some macros to only one inline function call.
* fixup sew error when use Gvec IR.
* fixup bugs for corner cases.
v5
* fixup a bug in tb flags.
v4
* no change
v3
* move check code from execution-time to translation-time
* use a continous memory block for vector register description.
* vector registers as direct fields in RISCVCPUState.
* support VLEN configure from qemu command line.
* support ELEN configure from qemu command line.
* support vector specification version configure from qemu command line.
* probe pages before real load or store access.
* use probe_page_check for no-fault operations in linux user mode.
* generation atomic exit exception when in parallel environment.
* fixup a lot of concrete bugs.
V2
* use float16_compare{_quiet}
* only use GETPC() in outer most helper
* add ctx.ext_v Property
LIU Zhiwei (62):
target/riscv: add vector extension field in CPURISCVState
target/riscv: implementation-defined constant parameters
target/riscv: support vector extension csr
target/riscv: add vector configure instruction
target/riscv: add an internals.h header
target/riscv: add vector stride load and store instructions
target/riscv: add vector index load and store instructions
target/riscv: add fault-only-first unit stride load
target/riscv: add vector amo operations
target/riscv: vector single-width integer add and subtract
target/riscv: vector widening integer add and subtract
target/riscv: vector integer add-with-carry / subtract-with-borrow
instructions
target/riscv: vector bitwise logical instructions
target/riscv: vector single-width bit shift instructions
target/riscv: vector narrowing integer right shift instructions
target/riscv: vector integer comparison instructions
target/riscv: vector integer min/max instructions
target/riscv: vector single-width integer multiply instructions
target/riscv: vector integer divide instructions
target/riscv: vector widening integer multiply instructions
target/riscv: vector single-width integer multiply-add instructions
target/riscv: vector widening integer multiply-add instructions
target/riscv: vector integer merge and move instructions
target/riscv: vector single-width saturating add and subtract
target/riscv: vector single-width averaging add and subtract
target/riscv: vector single-width fractional multiply with rounding
and saturation
target/riscv: vector widening saturating scaled multiply-add
target/riscv: vector single-width scaling shift instructions
target/riscv: vector narrowing fixed-point clip instructions
target/riscv: Update fp_status when float rounding mode changes
target/riscv: vector single-width floating-point add/subtract
instructions
target/riscv: vector widening floating-point add/subtract instructions
target/riscv: vector single-width floating-point multiply/divide
instructions
target/riscv: vector widening floating-point multiply
target/riscv: vector single-width floating-point fused multiply-add
instructions
target/riscv: vector widening floating-point fused multiply-add
instructions
target/riscv: vector floating-point square-root instruction
target/riscv: vector floating-point min/max instructions
target/riscv: vector floating-point sign-injection instructions
target/riscv: vector floating-point compare instructions
target/riscv: vector floating-point classify instructions
target/riscv: vector floating-point merge instructions
target/riscv: vector floating-point/integer type-convert instructions
target/riscv: widening floating-point/integer type-convert
instructions
target/riscv: narrowing floating-point/integer type-convert
instructions
target/riscv: vector single-width integer reduction instructions
target/riscv: vector wideing integer reduction instructions
target/riscv: vector single-width floating-point reduction
instructions
target/riscv: vector widening floating-point reduction instructions
target/riscv: vector mask-register logical instructions
target/riscv: vector mask population count vmpopc
target/riscv: vmfirst find-first-set mask bit
target/riscv: set-X-first mask bit
target/riscv: vector iota instruction
target/riscv: vector element index instruction
target/riscv: integer extract instruction
target/riscv: integer scalar move instruction
target/riscv: floating-point scalar move instructions
target/riscv: vector slide instructions
target/riscv: vector register gather instruction
target/riscv: vector compress instruction
target/riscv: configure and turn on vector extension from command line
target/riscv/Makefile.objs | 2 +-
target/riscv/cpu.c | 49 +
target/riscv/cpu.h | 82 +-
target/riscv/cpu_bits.h | 15 +
target/riscv/csr.c | 82 +-
target/riscv/fpu_helper.c | 52 +-
target/riscv/helper.h | 1068 +++++
target/riscv/insn32-64.decode | 11 +
target/riscv/insn32.decode | 372 ++
target/riscv/insn_trans/trans_rvv.inc.c | 2884 +++++++++++++
target/riscv/internals.h | 44 +
target/riscv/translate.c | 27 +-
target/riscv/vector_helper.c | 4898 +++++++++++++++++++++++
13 files changed, 9537 insertions(+), 49 deletions(-)
create mode 100644 target/riscv/insn_trans/trans_rvv.inc.c
create mode 100644 target/riscv/internals.h
create mode 100644 target/riscv/vector_helper.c
--
2.23.0