Files
gem5/util/cpt_upgraders/riscv-vext.py
Bobby R. Bruce ddf6cb88e4 misc: Run pre-commit run --all-files
This is reflect the updates made to black when running `pre-commit
autoupdate`.

Change-Id: Ifb7fea117f354c7f02f26926a5afdf7d67bc5919
2023-10-10 14:01:58 -07:00

85 lines
3.6 KiB
Python

# Copyright (c) 2023 Barcelona Supercomputing Center (BSC)
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
def upgrader(cpt):
"""
Update the checkpoint to support initial RVV implemtation.
The updater is taking the following steps.
1) Set vector registers to occupy 1280 bytes (40regs * 32bytes)
2) Clear vector_element, vector_predicate and matrix registers
3) Add RVV misc registers in the checkpoint
"""
for sec in cpt.sections():
import re
# Search for all XC sections
if re.search(".*processor.*\.core.*\.xc.*", sec):
# Updating RVV vector registers (dummy values)
# Assuming VLEN = 256 bits (32 bytes)
mr = cpt.get(sec, "regs.vector").split()
if len(mr) <= 8:
cpt.set(sec, "regs.vector", " ".join("0" for i in range(1280)))
# Updating RVV vector element (dummy values)
cpt.set(sec, "regs.vector_element", "")
# Updating RVV vector predicate (dummy values)
cpt.set(sec, "regs.vector_predicate", "")
# Updating RVV matrix (dummy values)
cpt.set(sec, "regs.matrix", "")
# Search for all ISA sections
if re.search(".*processor.*\.core.*\.isa$", sec):
# Updating RVV misc registers (dummy values)
mr = cpt.get(sec, "miscRegFile").split()
if len(mr) == 164:
print(
"MISCREG_* RVV registers already seem " "to be inserted."
)
else:
# Add dummy value for MISCREG_VSTART
mr.insert(121, 0)
# Add dummy value for MISCREG_VXSAT
mr.insert(121, 0)
# Add dummy value for MISCREG_VXRM
mr.insert(121, 0)
# Add dummy value for MISCREG_VCSR
mr.insert(121, 0)
# Add dummy value for MISCREG_VL
mr.insert(121, 0)
# Add dummy value for MISCREG_VTYPE
mr.insert(121, 0)
# Add dummy value for MISCREG_VLENB
mr.insert(121, 0)
cpt.set(sec, "miscRegFile", " ".join(str(x) for x in mr))
legacy_version = 17