[PATCH v2 00/11] Add support for the T-Head vendor extensions
Christoph Müllner
christoph.muellner@vrull.eu
Thu Sep 22 14:06:02 GMT 2022
On Thu, Sep 22, 2022 at 3:55 PM Nelson Chu <nelson@rivosinc.com> wrote:
> 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.
>
I don't have write access, but Philipp Tomsich will push changes upstream
later today.
Thank you for the review!
>
> 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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