1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
#!/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
|
