於 2021年10月15日 週五 下午3:48寫道： > From: Frank Chang > > This patchset implements the vector extension v1.0 for RISC-V on QEMU. > > RVV v1.0 spec is now fronzen for public review: > https://github.com/riscv/riscv-v-spec/releases/tag/v1.0 > > The port is available here: > https://github.com/sifive/qemu/tree/rvv-1.0-upstream-v8 > > RVV v1.0 can be enabled with -cpu option: v=true and specify vext_spec > option to v1.0 (i.e. vext_spec=v1.0) > > Note: This patchset depends on other patchsets listed in Based-on > section below so it is not able to be built unless those patchsets > are applied. > > Changelog: > > v8 > * Use {get,dest}_gpr APIs. > * remove vector AMO instructions. > * rename vpopc.m to vcpop.m. > * rename vle1.v and vse1.v to vlm.v and vsm.v. > * rename vmandnot.mm and vmornot.mm to vmandn.mm and vmorn.mm. > > v7 > * remove hardcoded GDB vector registers list. > * add vsetivli instruction. > * add vle1.v and vse1.v instructions. > > v6 > * add vector floating-point reciprocal estimate instruction. > * add vector floating-point reciprocal square-root estimate instruction. > * update check rules for segment register groups, each segment register > group has to follow overlap rules. > * update viota.m instruction check rules. > > v5 > * refactor RVV v1.0 check functions. > (Thanks to Richard Henderson's bitwise tricks.) > * relax RV_VLEN_MAX to 1024-bits. > * implement vstart CSR's behaviors. > * trigger illegal instruction exception if frm is not valid for > vector floating-point instructions. > * rebase on riscv-to-apply.next. > > v4 > * remove explicit float flmul variable in DisasContext. > * replace floating-point calculations with shift operations to > improve performance. > * relax RV_VLEN_MAX to 512-bits. > > v3 > * apply nan-box helpers from Richard Henderson. > * remove fp16 api changes as they are sent independently in another > pathcset by Chih-Min Chao. > * remove all tail elements clear functions as tail elements can > retain unchanged for either VTA set to undisturbed or agnostic. > * add fp16 nan-box check generator function. > * add floating-point rounding mode enum. > * replace flmul arithmetic with shifts to avoid floating-point > conversions. > * add Zvqmac extension. > * replace gdbstub vector register xml files with dynamic generator. > * bumped to RVV v1.0. > * RVV v1.0 related changes: > * add vlre.v and vsr.v vector whole register > load/store instructions > * add vrgatherei16 instruction. > * rearranged bits in vtype to make vlmul bits into a contiguous > field. > > v2 > * drop v0.7.1 support. > * replace invisible return check macros with functions. > * move mark_vs_dirty() to translators. > * add SSTATUS_VS flag for s-mode. > * nan-box scalar fp register for floating-point operations. > * add gdbstub files for vector registers to allow system-mode > debugging with GDB. > > Based-on: <20211015065500.3850513-1-frank.chang@sifive.com> > Based-on: <20211015070307.3860984-1-frank.chang@sifive.com> > > Frank Chang (73): > target/riscv: fix TB_FLAGS bits overlapping bug for rvv/rvh > target/riscv: drop vector 0.7.1 and add 1.0 support > target/riscv: Use FIELD_EX32() to extract wd field > target/riscv: rvv-1.0: introduce writable misa.v field > target/riscv: rvv-1.0: add translation-time vector context status > target/riscv: rvv-1.0: remove rvv related codes from fcsr registers > target/riscv: rvv-1.0: check MSTATUS_VS when accessing vector csr > registers > target/riscv: rvv-1.0: remove MLEN calculations > target/riscv: rvv-1.0: add fractional LMUL > target/riscv: rvv-1.0: add VMA and VTA > target/riscv: rvv-1.0: update check functions > target/riscv: introduce more imm value modes in translator functions > target/riscv: rvv:1.0: add translation-time nan-box helper function > target/riscv: rvv-1.0: remove amo operations instructions > target/riscv: rvv-1.0: configure instructions > target/riscv: rvv-1.0: stride load and store instructions > target/riscv: rvv-1.0: index load and store instructions > target/riscv: rvv-1.0: fix address index overflow bug of indexed > load/store insns > target/riscv: rvv-1.0: fault-only-first unit stride load > target/riscv: rvv-1.0: load/store whole register instructions > target/riscv: rvv-1.0: update vext_max_elems() for load/store insns > target/riscv: rvv-1.0: take fractional LMUL into vector max elements > calculation > target/riscv: rvv-1.0: floating-point square-root instruction > target/riscv: rvv-1.0: floating-point classify instructions > target/riscv: rvv-1.0: count population in mask instruction > target/riscv: rvv-1.0: find-first-set mask bit instruction > target/riscv: rvv-1.0: set-X-first mask bit instructions > target/riscv: rvv-1.0: iota instruction > target/riscv: rvv-1.0: element index instruction > target/riscv: rvv-1.0: allow load element with sign-extended > target/riscv: rvv-1.0: register gather instructions > target/riscv: rvv-1.0: integer scalar move instructions > target/riscv: rvv-1.0: floating-point move instruction > target/riscv: rvv-1.0: floating-point scalar move instructions > target/riscv: rvv-1.0: whole register move instructions > target/riscv: rvv-1.0: integer extension instructions > target/riscv: rvv-1.0: single-width averaging add and subtract > instructions > target/riscv: rvv-1.0: single-width bit shift instructions > target/riscv: rvv-1.0: integer add-with-carry/subtract-with-borrow > target/riscv: rvv-1.0: narrowing integer right shift instructions > target/riscv: rvv-1.0: widening integer multiply-add instructions > target/riscv: rvv-1.0: single-width saturating add and subtract > instructions > target/riscv: rvv-1.0: integer comparison instructions > target/riscv: rvv-1.0: floating-point compare instructions > target/riscv: rvv-1.0: mask-register logical instructions > target/riscv: rvv-1.0: slide instructions > target/riscv: rvv-1.0: floating-point slide instructions > target/riscv: rvv-1.0: narrowing fixed-point clip instructions > target/riscv: rvv-1.0: single-width floating-point reduction > target/riscv: rvv-1.0: widening floating-point reduction instructions > target/riscv: rvv-1.0: single-width scaling shift instructions > target/riscv: rvv-1.0: remove widening saturating scaled multiply-add > target/riscv: rvv-1.0: remove vmford.vv and vmford.vf > target/riscv: rvv-1.0: remove integer extract instruction > target/riscv: rvv-1.0: floating-point min/max instructions > target/riscv: introduce floating-point rounding mode enum > target/riscv: rvv-1.0: floating-point/integer type-convert > instructions > target/riscv: rvv-1.0: widening floating-point/integer type-convert > target/riscv: add "set round to odd" rounding mode helper function > target/riscv: rvv-1.0: narrowing floating-point/integer type-convert > target/riscv: rvv-1.0: relax RV_VLEN_MAX to 1024-bits > target/riscv: rvv-1.0: implement vstart CSR > target/riscv: rvv-1.0: trigger illegal instruction exception if frm is > not valid > target/riscv: rvv-1.0: set mstatus.SD bit when writing vector CSRs > target/riscv: rvv-1.0: floating-point reciprocal square-root estimate > instruction > target/riscv: rvv-1.0: floating-point reciprocal estimate instruction > target/riscv: set mstatus.SD bit when writing fp CSRs > target/riscv: rvv-1.0: rename r2_zimm to r2_zimm11 > target/riscv: rvv-1.0: add vsetivli instruction > target/riscv: rvv-1.0: add evl parameter to vext_ldst_us() > target/riscv: rvv-1.0: add vector unit-stride mask load/store insns > target/riscv: rvv-1.0: rename vmandnot.mm and vmornot.mm to vmandn.mm > and vmorn.mm > target/riscv: rvv-1.0: update opivv_vadc_check() comment > > Greentime Hu (1): > target/riscv: rvv-1.0: add vlenb register > > Hsiangkai Wang (1): > target/riscv: gdb: support vector registers for rv64 & rv32 > > LIU Zhiwei (3): > target/riscv: rvv-1.0: add mstatus VS field > target/riscv: rvv-1.0: add sstatus VS field > target/riscv: rvv-1.0: add vcsr register > > target/riscv/cpu.c | 12 +- > target/riscv/cpu.h | 85 +- > target/riscv/cpu_bits.h | 10 + > target/riscv/cpu_helper.c | 15 +- > target/riscv/csr.c | 92 +- > target/riscv/fpu_helper.c | 17 +- > target/riscv/gdbstub.c | 184 ++ > target/riscv/helper.h | 435 ++- > target/riscv/insn32.decode | 294 +- > target/riscv/insn_trans/trans_rvv.c.inc | 2423 +++++++++------ > target/riscv/internals.h | 24 +- > target/riscv/translate.c | 74 +- > target/riscv/vector_helper.c | 3601 ++++++++++++----------- > 13 files changed, 4176 insertions(+), 3090 deletions(-) > > -- > 2.25.1 > > > I notice that there are couple of unexpected patches being incldued in this series: * [PATCH 18/76] target/riscv: rvv-1.0: configure instructions * [PATCH 19/76] target/riscv: rvv-1.0: stride load and store instructions * [PATCH 20/76] target/riscv: rvv-1.0: index load and store instructions * [PATCH 21/76] target/riscv: rvv-1.0: fix address index overflow bug of indexed load/store insns * [PATCH 22/76] target/riscv: rvv-1.0: fault-only-first unit stride load * [PATCH 23/76] target/riscv: rvv-1.0: amo operations It's probably because I had dirty content in my directory which I didn't aware of :( Please ignore them. Or I can resend the patchset if that's more convenient to review. Sorry for the confusion. Regards, Frank Chang