[PATCH v2 00/11] Add support for the T-Head vendor extensions
Nelson Chu
nelson@rivosinc.com
Thu Sep 22 13:55:35 GMT 2022
On Sun, Sep 18, 2022 at 3:24 PM Christoph Muellner
<christoph.muellner@vrull.eu> wrote:
>
> From: Christoph Müllner <christoph.muellner@vrull.eu>
>
> This series introduces support for the T-Head vendor extensions,
> which are implemented e.g. in the XuanTie C906 and XuanTie C910
> processors:
> * XTheadBa
> * XTheadBb
> * XTheadBs
> * XTheadCmo
> * XTheadCondMov
> * XTheadFMemIdx
> * XTheadMac
> * XTheadMemIdx
> * XTheadMemPair
> * XTheadSync
>
> The xthead* extensions are documented here:
> https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.0.0/xthead-2022-09-05-2.0.0.pdf
>
> The "th." instruction prefix prevents future conflicts with standard
> extensions and has been documentented in the RISC-V toolchain conventions:
> https://github.com/riscv-non-isa/riscv-toolchain-conventions/pull/19
>
> The goal of this patchset is to provide access to these instructions
> so that compilers/users can optimize SW accordingly.
>
> Note, that the T-Head vendor extensions do not contain all
> vendor-specific functionality of the T-Head SoCs (e.g. no vendor-specific
> CSRs are included). Instead the extensions cover coherent functionality,
> that is exposed to S and U mode.
>
> The patchset attempts to minimize code changes in generic/infrastructure code.
> All patches in this series come with tests to avoid future regressions.
>
> v2:
> * Drop -mcpu= support patches
> * Add extensions to riscv_multi_subset_supports_ext
> * Rename operand 'L' to 'Xl'
Thanks for updating these.
> Christoph Müllner (11):
> RISC-V: Add generic support for vendor extensions
> RISC-V: Add T-Head CMO vendor extension
> RISC-V: Add T-Head SYNC vendor extension
> RISC-V: Add support for arbitrary immediate encoding formats
> RISC-V: Add T-Head Bitmanip vendor extension
> RISC-V: Add T-Head CondMov vendor extension
> RISC-V: Add T-Head MAC vendor extension
> RISC-V: Add T-Head FMemIdx vendor extension
> RISC-V: Add T-Head MemIdx vendor extension
> RISC-V: Add support for literal instruction arguments
> RISC-V: Add T-Head MemPair vendor extension
Looks good to me, I had heard from many people that we need the
support of t-head vendor extensions for al long time, so please commit
them if you think it's time.
Thanks for all your contribution
Nelson
> bfd/elfxx-riscv.c | 59 +++-
> gas/config/tc-riscv.c | 84 +++++
> gas/doc/c-riscv.texi | 63 ++++
> gas/testsuite/gas/riscv/x-thead-ba-fail.d | 3 +
> gas/testsuite/gas/riscv/x-thead-ba-fail.l | 3 +
> gas/testsuite/gas/riscv/x-thead-ba-fail.s | 3 +
> gas/testsuite/gas/riscv/x-thead-ba.d | 13 +
> gas/testsuite/gas/riscv/x-thead-ba.s | 6 +
> gas/testsuite/gas/riscv/x-thead-bb-fail.d | 3 +
> gas/testsuite/gas/riscv/x-thead-bb-fail.l | 7 +
> gas/testsuite/gas/riscv/x-thead-bb-fail.s | 7 +
> gas/testsuite/gas/riscv/x-thead-bb.d | 30 ++
> gas/testsuite/gas/riscv/x-thead-bb.s | 22 ++
> gas/testsuite/gas/riscv/x-thead-bs-fail.d | 3 +
> gas/testsuite/gas/riscv/x-thead-bs-fail.l | 3 +
> gas/testsuite/gas/riscv/x-thead-bs-fail.s | 3 +
> gas/testsuite/gas/riscv/x-thead-bs.d | 14 +
> gas/testsuite/gas/riscv/x-thead-bs.s | 6 +
> gas/testsuite/gas/riscv/x-thead-cmo-fail.d | 3 +
> gas/testsuite/gas/riscv/x-thead-cmo-fail.l | 22 ++
> gas/testsuite/gas/riscv/x-thead-cmo-fail.s | 22 ++
> gas/testsuite/gas/riscv/x-thead-cmo.d | 30 ++
> gas/testsuite/gas/riscv/x-thead-cmo.s | 22 ++
> gas/testsuite/gas/riscv/x-thead-condmov.d | 11 +
> gas/testsuite/gas/riscv/x-thead-condmov.s | 3 +
> .../gas/riscv/x-thead-fmemidx-fail.d | 3 +
> .../gas/riscv/x-thead-fmemidx-fail.l | 18 +
> .../gas/riscv/x-thead-fmemidx-fail.s | 17 +
> gas/testsuite/gas/riscv/x-thead-fmemidx.d | 25 ++
> gas/testsuite/gas/riscv/x-thead-fmemidx.s | 17 +
> gas/testsuite/gas/riscv/x-thead-mac.d | 15 +
> gas/testsuite/gas/riscv/x-thead-mac.s | 7 +
> gas/testsuite/gas/riscv/x-thead-memidx-fail.d | 3 +
> gas/testsuite/gas/riscv/x-thead-memidx-fail.l | 14 +
> gas/testsuite/gas/riscv/x-thead-memidx-fail.s | 14 +
> gas/testsuite/gas/riscv/x-thead-memidx.d | 53 +++
> gas/testsuite/gas/riscv/x-thead-memidx.s | 48 +++
> .../gas/riscv/x-thead-mempair-fail.d | 3 +
> .../gas/riscv/x-thead-mempair-fail.l | 30 ++
> .../gas/riscv/x-thead-mempair-fail.s | 30 ++
> gas/testsuite/gas/riscv/x-thead-mempair.d | 14 +
> gas/testsuite/gas/riscv/x-thead-mempair.s | 6 +
> gas/testsuite/gas/riscv/x-thead-sync-fail.d | 3 +
> gas/testsuite/gas/riscv/x-thead-sync-fail.l | 6 +
> gas/testsuite/gas/riscv/x-thead-sync-fail.s | 6 +
> gas/testsuite/gas/riscv/x-thead-sync.d | 14 +
> gas/testsuite/gas/riscv/x-thead-sync.s | 6 +
> include/opcode/riscv-opc.h | 326 ++++++++++++++++++
> include/opcode/riscv.h | 27 ++
> opcodes/riscv-dis.c | 43 +++
> opcodes/riscv-opc.c | 155 +++++++++
> 51 files changed, 1346 insertions(+), 2 deletions(-)
> create mode 100644 gas/testsuite/gas/riscv/x-thead-ba-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-ba-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-ba-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-ba.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-ba.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bb-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bb-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bb-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bb.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bb.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bs-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bs-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bs-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bs.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-bs.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-cmo-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-cmo-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-cmo-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-cmo.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-cmo.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-condmov.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-condmov.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-fmemidx-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-fmemidx-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-fmemidx-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-fmemidx.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-fmemidx.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-mac.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-mac.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-memidx-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-memidx-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-memidx-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-memidx.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-memidx.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-mempair-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-mempair-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-mempair-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-mempair.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-mempair.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-sync-fail.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-sync-fail.l
> create mode 100644 gas/testsuite/gas/riscv/x-thead-sync-fail.s
> create mode 100644 gas/testsuite/gas/riscv/x-thead-sync.d
> create mode 100644 gas/testsuite/gas/riscv/x-thead-sync.s
>
> --
> 2.37.2
>
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