[PATCH 00/13] Add support for the T-Head vendor extensions
Christoph Muellner
christoph.muellner@vrull.eu
Tue Sep 6 12:22:00 GMT 2022
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 a PR for 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 instruction
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.
To enable the extensions above, the following two methods are possible:
* add the extension to the arch string (e.g.
* -march=rv64gc_xtheadcmo_xtheadsync)
* implicitly select the extensions via CPU selection (e.g.
* -mcpu=thead-c910)
The patchset attempts to minimize code changes in generic/infrastructure
code. All patches in this series come with tests to avoid future regressions.
Christoph Müllner (13):
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
riscv: gas: Add command line option '-mcpu=' to specify the CPU
riscv: Add T-Head entries for the -mcpu= flag
bfd/elfxx-riscv.c | 39 ++-
gas/config/tc-riscv.c | 127 +++++++
gas/doc/c-riscv.texi | 70 ++++
gas/testsuite/gas/riscv/mcpu-fail-unknown.d | 3 +
gas/testsuite/gas/riscv/mcpu-fail-unknown.l | 2 +
gas/testsuite/gas/riscv/mcpu-ok-c906.d | 6 +
gas/testsuite/gas/riscv/mcpu-ok-c910.d | 6 +
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 | 44 +++
opcodes/riscv-opc.c | 155 +++++++++
55 files changed, 1394 insertions(+), 2 deletions(-)
create mode 100644 gas/testsuite/gas/riscv/mcpu-fail-unknown.d
create mode 100644 gas/testsuite/gas/riscv/mcpu-fail-unknown.l
create mode 100644 gas/testsuite/gas/riscv/mcpu-ok-c906.d
create mode 100644 gas/testsuite/gas/riscv/mcpu-ok-c910.d
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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