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3 Commits

Author SHA1 Message Date
Xuan Hu
461520d0ab ext: Update softfloat to 3d full version 
* Add all softfloat source files without any change.
* Remove useless file softfloat.mk.in, since gem5 use Scons.
* Add `use_fast_int64` in SConscript to distinguish src of two strategies for data
  larger than 64 bits.
  * The SoftFloat library uses two strategies to handle data larger than 64bit. One is
    spliting data into `fast_int64`, and the other is using pointer. Two strategies
    are distinguished by macro `SOFTFLOAT_FAST_INT64`. But not all "*.c" files are
    guarded by this macro, which leads to including useless files in compiling progress
    and compiling error. `use_fast_int64` used in SConscript can exclude unnecessary
    files.

Change-Id: I7cec10412c00a35c247299cd92d83cdee9066410
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/66552
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
 2023-03-28 10:47:18 +00:00
ksco
53009f9e69 arch-riscv: Add Zfh extension 
This commit adds RISC-V Zfh 1.0 (half-precision IEEE 754 binary16 floating
point) extension to gem5. Include the following commands:

* FLH / FSH
* FMADD.H / FMSUB.H / FNMSUB.H / FNMADD.H
* FADD.H / FSUB.H / FMUL.H / FDIV.H
* FSQRT.H
* FSGNJ.H / FSGNJN.H / FSGNJX.H
* FMIN.H / FMAX.H
* FCVT.S.H / FCVT.H.S
* FCVT.D.H / FCVT.H.D
* FCVT.W.H / FCVT.H.W
* FCVT.WU.H / FCVT.H.WU
* FMV.X.H / FMV.H.X
* FEQ.H / FLT.H / FLE.H
* FCLASS.H
* FCVT.L.H / FCVT.H.L
* FCVT.LU.H / FCVT.H.LU

Change-Id: Id7870fdfa1aa8b840706c3ba2cab8eeaf008880f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/60029
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
 2022-05-27 01:22:31 +00:00
kai.ren
3a9d0de609 ext: Add SoftFloat Library to ext directory 
This patch adds Softfloat library for supporting RISCV
float operation implement.

Using SoftFloat Package to reinplement Riscv FPops.

Jira Issue: https://gem5.atlassian.net/browse/GEM5-373

Change-Id: Ic96e6c8adec0713bdbd744d581c750034b88246c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39357
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
 2021-02-19 02:26:13 +00:00