mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-27 13:30:52 +00:00
144da35776
Add HVX support to the semantics generator Acked-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
250 lines
8.3 KiB
Python
Executable File
250 lines
8.3 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
##
|
|
## Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
|
|
##
|
|
## This program is free software; you can redistribute it and/or modify
|
|
## it under the terms of the GNU General Public License as published by
|
|
## the Free Software Foundation; either version 2 of the License, or
|
|
## (at your option) any later version.
|
|
##
|
|
## This program is distributed in the hope that it will be useful,
|
|
## but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
## GNU General Public License for more details.
|
|
##
|
|
## You should have received a copy of the GNU General Public License
|
|
## along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
##
|
|
|
|
import sys
|
|
import re
|
|
import string
|
|
|
|
behdict = {} # tag ->behavior
|
|
semdict = {} # tag -> semantics
|
|
attribdict = {} # tag -> attributes
|
|
macros = {} # macro -> macro information...
|
|
attribinfo = {} # Register information and misc
|
|
tags = [] # list of all tags
|
|
overrides = {} # tags with helper overrides
|
|
|
|
# We should do this as a hash for performance,
|
|
# but to keep order let's keep it as a list.
|
|
def uniquify(seq):
|
|
seen = set()
|
|
seen_add = seen.add
|
|
return [x for x in seq if x not in seen and not seen_add(x)]
|
|
|
|
regre = re.compile(
|
|
r"((?<!DUP)[MNORCPQXSGVZA])([stuvwxyzdefg]+)([.]?[LlHh]?)(\d+S?)")
|
|
immre = re.compile(r"[#]([rRsSuUm])(\d+)(?:[:](\d+))?")
|
|
reg_or_immre = \
|
|
re.compile(r"(((?<!DUP)[MNRCOPQXSGVZA])([stuvwxyzdefg]+)" + \
|
|
"([.]?[LlHh]?)(\d+S?))|([#]([rRsSuUm])(\d+)[:]?(\d+)?)")
|
|
relimmre = re.compile(r"[#]([rR])(\d+)(?:[:](\d+))?")
|
|
absimmre = re.compile(r"[#]([sSuUm])(\d+)(?:[:](\d+))?")
|
|
|
|
finished_macros = set()
|
|
|
|
def expand_macro_attribs(macro,allmac_re):
|
|
if macro.key not in finished_macros:
|
|
# Get a list of all things that might be macros
|
|
l = allmac_re.findall(macro.beh)
|
|
for submacro in l:
|
|
if not submacro: continue
|
|
if not macros[submacro]:
|
|
raise Exception("Couldn't find macro: <%s>" % l)
|
|
macro.attribs |= expand_macro_attribs(
|
|
macros[submacro], allmac_re)
|
|
finished_macros.add(macro.key)
|
|
return macro.attribs
|
|
|
|
# When qemu needs an attribute that isn't in the imported files,
|
|
# we'll add it here.
|
|
def add_qemu_macro_attrib(name, attrib):
|
|
macros[name].attribs.add(attrib)
|
|
|
|
immextre = re.compile(r'f(MUST_)?IMMEXT[(]([UuSsRr])')
|
|
def calculate_attribs():
|
|
add_qemu_macro_attrib('fREAD_PC', 'A_IMPLICIT_READS_PC')
|
|
add_qemu_macro_attrib('fTRAP', 'A_IMPLICIT_READS_PC')
|
|
add_qemu_macro_attrib('fWRITE_P0', 'A_WRITES_PRED_REG')
|
|
add_qemu_macro_attrib('fWRITE_P1', 'A_WRITES_PRED_REG')
|
|
add_qemu_macro_attrib('fWRITE_P2', 'A_WRITES_PRED_REG')
|
|
add_qemu_macro_attrib('fWRITE_P3', 'A_WRITES_PRED_REG')
|
|
add_qemu_macro_attrib('fSET_OVERFLOW', 'A_IMPLICIT_WRITES_USR')
|
|
add_qemu_macro_attrib('fSET_LPCFG', 'A_IMPLICIT_WRITES_USR')
|
|
|
|
# Recurse down macros, find attributes from sub-macros
|
|
macroValues = list(macros.values())
|
|
allmacros_restr = "|".join(set([ m.re.pattern for m in macroValues ]))
|
|
allmacros_re = re.compile(allmacros_restr)
|
|
for macro in macroValues:
|
|
expand_macro_attribs(macro,allmacros_re)
|
|
# Append attributes to all instructions
|
|
for tag in tags:
|
|
for macname in allmacros_re.findall(semdict[tag]):
|
|
if not macname: continue
|
|
macro = macros[macname]
|
|
attribdict[tag] |= set(macro.attribs)
|
|
# Figure out which instructions write predicate registers
|
|
tagregs = get_tagregs()
|
|
for tag in tags:
|
|
regs = tagregs[tag]
|
|
for regtype, regid, toss, numregs in regs:
|
|
if regtype == "P" and is_written(regid):
|
|
attribdict[tag].add('A_WRITES_PRED_REG')
|
|
|
|
def SEMANTICS(tag, beh, sem):
|
|
#print tag,beh,sem
|
|
behdict[tag] = beh
|
|
semdict[tag] = sem
|
|
attribdict[tag] = set()
|
|
tags.append(tag) # dicts have no order, this is for order
|
|
|
|
def ATTRIBUTES(tag, attribstring):
|
|
attribstring = \
|
|
attribstring.replace("ATTRIBS","").replace("(","").replace(")","")
|
|
if not attribstring:
|
|
return
|
|
attribs = attribstring.split(",")
|
|
for attrib in attribs:
|
|
attribdict[tag].add(attrib.strip())
|
|
|
|
class Macro(object):
|
|
__slots__ = ['key','name', 'beh', 'attribs', 're']
|
|
def __init__(self, name, beh, attribs):
|
|
self.key = name
|
|
self.name = name
|
|
self.beh = beh
|
|
self.attribs = set(attribs)
|
|
self.re = re.compile("\\b" + name + "\\b")
|
|
|
|
def MACROATTRIB(macname,beh,attribstring):
|
|
attribstring = attribstring.replace("(","").replace(")","")
|
|
if attribstring:
|
|
attribs = attribstring.split(",")
|
|
else:
|
|
attribs = []
|
|
macros[macname] = Macro(macname,beh,attribs)
|
|
|
|
def compute_tag_regs(tag):
|
|
return uniquify(regre.findall(behdict[tag]))
|
|
|
|
def compute_tag_immediates(tag):
|
|
return uniquify(immre.findall(behdict[tag]))
|
|
|
|
##
|
|
## tagregs is the main data structure we'll use
|
|
## tagregs[tag] will contain the registers used by an instruction
|
|
## Within each entry, we'll use the regtype and regid fields
|
|
## regtype can be one of the following
|
|
## C control register
|
|
## N new register value
|
|
## P predicate register
|
|
## R GPR register
|
|
## M modifier register
|
|
## Q HVX predicate vector
|
|
## V HVX vector register
|
|
## O HVX new vector register
|
|
## regid can be one of the following
|
|
## d, e destination register
|
|
## dd destination register pair
|
|
## s, t, u, v, w source register
|
|
## ss, tt, uu, vv source register pair
|
|
## x, y read-write register
|
|
## xx, yy read-write register pair
|
|
##
|
|
def get_tagregs():
|
|
return dict(zip(tags, list(map(compute_tag_regs, tags))))
|
|
|
|
def get_tagimms():
|
|
return dict(zip(tags, list(map(compute_tag_immediates, tags))))
|
|
|
|
def is_pair(regid):
|
|
return len(regid) == 2
|
|
|
|
def is_single(regid):
|
|
return len(regid) == 1
|
|
|
|
def is_written(regid):
|
|
return regid[0] in "dexy"
|
|
|
|
def is_writeonly(regid):
|
|
return regid[0] in "de"
|
|
|
|
def is_read(regid):
|
|
return regid[0] in "stuvwxy"
|
|
|
|
def is_readwrite(regid):
|
|
return regid[0] in "xy"
|
|
|
|
def is_scalar_reg(regtype):
|
|
return regtype in "RPC"
|
|
|
|
def is_hvx_reg(regtype):
|
|
return regtype in "VQ"
|
|
|
|
def is_old_val(regtype, regid, tag):
|
|
return regtype+regid+'V' in semdict[tag]
|
|
|
|
def is_new_val(regtype, regid, tag):
|
|
return regtype+regid+'N' in semdict[tag]
|
|
|
|
def need_slot(tag):
|
|
if ('A_CONDEXEC' in attribdict[tag] or
|
|
'A_STORE' in attribdict[tag] or
|
|
'A_LOAD' in attribdict[tag]):
|
|
return 1
|
|
else:
|
|
return 0
|
|
|
|
def need_part1(tag):
|
|
return re.compile(r"fPART1").search(semdict[tag])
|
|
|
|
def need_ea(tag):
|
|
return re.compile(r"\bEA\b").search(semdict[tag])
|
|
|
|
def skip_qemu_helper(tag):
|
|
return tag in overrides.keys()
|
|
|
|
def is_tmp_result(tag):
|
|
return ('A_CVI_TMP' in attribdict[tag] or
|
|
'A_CVI_TMP_DST' in attribdict[tag])
|
|
|
|
def is_new_result(tag):
|
|
return ('A_CVI_NEW' in attribdict[tag])
|
|
|
|
def imm_name(immlett):
|
|
return "%siV" % immlett
|
|
|
|
def read_semantics_file(name):
|
|
eval_line = ""
|
|
for line in open(name, 'rt').readlines():
|
|
if not line.startswith("#"):
|
|
eval_line += line
|
|
if line.endswith("\\\n"):
|
|
eval_line.rstrip("\\\n")
|
|
else:
|
|
eval(eval_line.strip())
|
|
eval_line = ""
|
|
|
|
def read_attribs_file(name):
|
|
attribre = re.compile(r'DEF_ATTRIB\(([A-Za-z0-9_]+), ([^,]*), ' +
|
|
r'"([A-Za-z0-9_\.]*)", "([A-Za-z0-9_\.]*)"\)')
|
|
for line in open(name, 'rt').readlines():
|
|
if not attribre.match(line):
|
|
continue
|
|
(attrib_base,descr,rreg,wreg) = attribre.findall(line)[0]
|
|
attrib_base = 'A_' + attrib_base
|
|
attribinfo[attrib_base] = {'rreg':rreg, 'wreg':wreg, 'descr':descr}
|
|
|
|
def read_overrides_file(name):
|
|
overridere = re.compile("#define fGEN_TCG_([A-Za-z0-9_]+)\(.*")
|
|
for line in open(name, 'rt').readlines():
|
|
if not overridere.match(line):
|
|
continue
|
|
tag = overridere.findall(line)[0]
|
|
overrides[tag] = True
|