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| author | Jin Ma <jinma@linux.alibaba.com> | 2023-11-18 14:53:08 +0800 |
|---|---|---|
| committer | Nelson Chu <nelson@rivosinc.com> | 2023-11-23 09:31:25 +0800 |
| commit | 86fbfedd715df8a89d73374d70b1f068f95b450e (patch) | |
| tree | e569a7d8ff6b5cf8e154f295173d37a1772c4a27 /gas | |
| parent | da02021b59983145f7da0226afb46345cda5d9ef (diff) | |
| download | gdb-86fbfedd715df8a89d73374d70b1f068f95b450e.zip gdb-86fbfedd715df8a89d73374d70b1f068f95b450e.tar.gz gdb-86fbfedd715df8a89d73374d70b1f068f95b450e.tar.bz2 | |
RISC-V: Add T-Head VECTOR vendor extension.
T-Head has a range of vendor-specific instructions ([2]).
Therefore it makes sense to group them into smaller chunks
in form of vendor extensions.
This patch adds the "XTheadVector" extension, a collection of
T-Head-specific vector instructions. The 'th' prefix and the
"XTheadVector" extension are documented in a PR for the RISC-V
toolchain conventions ([1]).
Here are some things that need to be explained:
The "XTheadVector" extension is not a custom-extension, but
a non-standard non-conforming extension. The encoding space
of the "TheadVector" instructions overlaps with those of
the 'V' extension. This encoding space conflict is not on
purpose, but the result of issues in the past that have
been resolved since. Therefore, the "XTheadVector" extension
and the 'V' extension are in conflict.
[1] https://github.com/riscv-non-isa/riscv-toolchain-conventions/pull/19
[2] https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.3.0/xthead-2023-11-10-2.3.0.pdf
Co-developed-by: Lifang Xia <lifang_xia@linux.alibaba.com>
Co-developed-by: Christoph Müllner <christoph.muellner@vrull.eu>
bfd/ChangeLog:
* elfxx-riscv.c (riscv_parse_check_conflicts): The
"XTheadVector" extension and the 'V' extension are in conflict.
(riscv_multi_subset_supports): Likewise..
(riscv_multi_subset_supports_ext): Likewise.
gas/ChangeLog:
* doc/c-riscv.texi:
* testsuite/gas/riscv/x-thead-vector-fail.d: New test.
* testsuite/gas/riscv/x-thead-vector-fail.l: New test.
* testsuite/gas/riscv/x-thead-vector.s: New test.
include/ChangeLog:
* opcode/riscv.h (enum riscv_insn_class):
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/NEWS | 3 | ||||
| -rw-r--r-- | gas/doc/c-riscv.texi | 5 | ||||
| -rw-r--r-- | gas/testsuite/gas/riscv/x-thead-vector-fail.d | 3 | ||||
| -rw-r--r-- | gas/testsuite/gas/riscv/x-thead-vector-fail.l | 2 | ||||
| -rw-r--r-- | gas/testsuite/gas/riscv/x-thead-vector.s | 0 |
5 files changed, 13 insertions, 0 deletions
@@ -31,6 +31,9 @@ * Add support for Cortex-X4 for AArch64. +* Add support for various T-Head extensions (XTheadVector, XTheadZvlsseg + and XTheadZvamo) from version 2.3.0 of the T-Head ISA manual. + Changes in 2.41: * Add support for the KVX instruction set. diff --git a/gas/doc/c-riscv.texi b/gas/doc/c-riscv.texi index b235046..a7c9420 100644 --- a/gas/doc/c-riscv.texi +++ b/gas/doc/c-riscv.texi @@ -814,6 +814,11 @@ The XTheadSync extension provides instructions for multi-processor synchronizati It is documented in @url{https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.0.0/xthead-2022-09-05-2.0.0.pdf}. +@item XTheadVector +The XTheadVector extension provides instructions for thead vector. + +It is documented in @url{https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.3.0/xthead-2023-11-10-2.3.0.pdf}. + @item XVentanaCondOps XVentanaCondOps extension provides instructions for branchless sequences that perform conditional arithmetic, conditional diff --git a/gas/testsuite/gas/riscv/x-thead-vector-fail.d b/gas/testsuite/gas/riscv/x-thead-vector-fail.d new file mode 100644 index 0000000..ac99c3f --- /dev/null +++ b/gas/testsuite/gas/riscv/x-thead-vector-fail.d @@ -0,0 +1,3 @@ +#as: -march=rv64gcv_xtheadvector +#source: x-thead-vector.s +#error_output: x-thead-vector-fail.l diff --git a/gas/testsuite/gas/riscv/x-thead-vector-fail.l b/gas/testsuite/gas/riscv/x-thead-vector-fail.l new file mode 100644 index 0000000..7dd88e3 --- /dev/null +++ b/gas/testsuite/gas/riscv/x-thead-vector-fail.l @@ -0,0 +1,2 @@ +Assembler messages: +Error: `xtheadvector' is conflict with the `v' extension
\ No newline at end of file diff --git a/gas/testsuite/gas/riscv/x-thead-vector.s b/gas/testsuite/gas/riscv/x-thead-vector.s new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/gas/testsuite/gas/riscv/x-thead-vector.s |