From: Frank Chang <frank.chang@sifive.com>
Zfh - Half width floating point
Zfhmin - Subset of half width floating point
Zfh, Zfhmin v0.1 is now in public review period and is required by
RVV extension:
https://groups.google.com/a/groups.riscv.org/g/isa-dev/c/63gDCinXTwE/m/871Wm9XIBQAJ
Zfh, Zfhmin can be enabled with -cpu option: Zfh=true and Zfhmin=true
respectively.
The port is available at:
https://github.com/sifive/qemu/tree/zfh-upstream-v5
Note: This patchset depends on another patchset listed in Based-on
section below so it is not able to be built unless the patchset
is applied.
Changelog:
v5:
* Rebase on riscv-to-apply.next.
v4:
* Spilt Zfh, Zfhmin cpu properties related changes into individual
patches.
v3:
* Use the renamed softfloat min/max APIs: *_minimum_number()
and *_maximum_number().
* Pick softfloat min/max APIs based on CPU privilege spec version.
* Add braces for if statements in REQUIRE_ZFH() and
REQUIRE_ZFH_OR_ZFHMIN().
* Rearrange the positions of Zfh and Zfhmin cpu properties.
v2:
* Use {get,dest}_gpr APIs.
* Add Zfhmin extension.
Based-on: <20211021160847.2748577-1-frank.chang@sifive.com>
Frank Chang (3):
target/riscv: zfh: add Zfh cpu property
target/riscv: zfh: implement zfhmin extension
target/riscv: zfh: add Zfhmin cpu property
Kito Cheng (5):
target/riscv: zfh: half-precision load and store
target/riscv: zfh: half-precision computational
target/riscv: zfh: half-precision convert and move
target/riscv: zfh: half-precision floating-point compare
target/riscv: zfh: half-precision floating-point classify
target/riscv/cpu.c | 2 +
target/riscv/cpu.h | 2 +
target/riscv/fpu_helper.c | 180 ++++++++
target/riscv/helper.h | 29 ++
target/riscv/insn32.decode | 38 ++
target/riscv/insn_trans/trans_rvzfh.c.inc | 537 ++++++++++++++++++++++
target/riscv/internals.h | 16 +
target/riscv/translate.c | 20 +
8 files changed, 824 insertions(+)
create mode 100644 target/riscv/insn_trans/trans_rvzfh.c.inc
--
2.25.1
Hi Alistair,
Is this one able to be merged to v6.2.0 as the soft feature freeze is due today (2021-11-02).
I think this series has gotten all Reviewed-by.
Thanks,
Frank Chang