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
|
#!/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
import hex_common
##
## Helpers for gen_helper_function
##
def gen_decl_ea(f):
f.write(" uint32_t EA;\n")
def gen_helper_return_type(f,regtype,regid,regno):
if regno > 1 : f.write(", ")
f.write("int32_t")
def gen_helper_return_type_pair(f,regtype,regid,regno):
if regno > 1 : f.write(", ")
f.write("int64_t")
def gen_helper_arg(f,regtype,regid,regno):
if regno > 0 : f.write(", " )
f.write("int32_t %s%sV" % (regtype,regid))
def gen_helper_arg_new(f,regtype,regid,regno):
if regno >= 0 : f.write(", " )
f.write("int32_t %s%sN" % (regtype,regid))
def gen_helper_arg_pair(f,regtype,regid,regno):
if regno >= 0 : f.write(", ")
f.write("int64_t %s%sV" % (regtype,regid))
def gen_helper_arg_opn(f,regtype,regid,i,tag):
if (hex_common.is_pair(regid)):
gen_helper_arg_pair(f,regtype,regid,i)
elif (hex_common.is_single(regid)):
if hex_common.is_old_val(regtype, regid, tag):
gen_helper_arg(f,regtype,regid,i)
elif hex_common.is_new_val(regtype, regid, tag):
gen_helper_arg_new(f,regtype,regid,i)
else:
print("Bad register parse: ",regtype,regid,toss,numregs)
else:
print("Bad register parse: ",regtype,regid,toss,numregs)
def gen_helper_arg_imm(f,immlett):
f.write(", int32_t %s" % (hex_common.imm_name(immlett)))
def gen_helper_dest_decl(f,regtype,regid,regno,subfield=""):
f.write(" int32_t %s%sV%s = 0;\n" % \
(regtype,regid,subfield))
def gen_helper_dest_decl_pair(f,regtype,regid,regno,subfield=""):
f.write(" int64_t %s%sV%s = 0;\n" % \
(regtype,regid,subfield))
def gen_helper_dest_decl_opn(f,regtype,regid,i):
if (hex_common.is_pair(regid)):
gen_helper_dest_decl_pair(f,regtype,regid,i)
elif (hex_common.is_single(regid)):
gen_helper_dest_decl(f,regtype,regid,i)
else:
print("Bad register parse: ",regtype,regid,toss,numregs)
def gen_helper_return(f,regtype,regid,regno):
f.write(" return %s%sV;\n" % (regtype,regid))
def gen_helper_return_pair(f,regtype,regid,regno):
f.write(" return %s%sV;\n" % (regtype,regid))
def gen_helper_return_opn(f, regtype, regid, i):
if (hex_common.is_pair(regid)):
gen_helper_return_pair(f,regtype,regid,i)
elif (hex_common.is_single(regid)):
gen_helper_return(f,regtype,regid,i)
else:
print("Bad register parse: ",regtype,regid,toss,numregs)
##
## Generate the TCG code to call the helper
## For A2_add: Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;}
## We produce:
## int32_t HELPER(A2_add)(CPUHexagonState *env, int32_t RsV, int32_t RtV)
## {
## uint32_t slot __attribute__(unused)) = 4;
## int32_t RdV = 0;
## { RdV=RsV+RtV;}
## COUNT_HELPER(A2_add);
## return RdV;
## }
##
def gen_helper_function(f, tag, tagregs, tagimms):
regs = tagregs[tag]
imms = tagimms[tag]
numresults = 0
numscalarresults = 0
numscalarreadwrite = 0
for regtype,regid,toss,numregs in regs:
if (hex_common.is_written(regid)):
numresults += 1
if (hex_common.is_scalar_reg(regtype)):
numscalarresults += 1
if (hex_common.is_readwrite(regid)):
if (hex_common.is_scalar_reg(regtype)):
numscalarreadwrite += 1
if (numscalarresults > 1):
## The helper is bogus when there is more than one result
f.write("void HELPER(%s)(CPUHexagonState *env) { BOGUS_HELPER(%s); }\n"
% (tag, tag))
else:
## The return type of the function is the type of the destination
## register
i=0
for regtype,regid,toss,numregs in regs:
if (hex_common.is_written(regid)):
if (hex_common.is_pair(regid)):
gen_helper_return_type_pair(f,regtype,regid,i)
elif (hex_common.is_single(regid)):
gen_helper_return_type(f,regtype,regid,i)
else:
print("Bad register parse: ",regtype,regid,toss,numregs)
i += 1
if (numscalarresults == 0):
f.write("void")
f.write(" HELPER(%s)(CPUHexagonState *env" % tag)
i = 1
## Arguments to the helper function are the source regs and immediates
for regtype,regid,toss,numregs in regs:
if (hex_common.is_read(regid)):
gen_helper_arg_opn(f,regtype,regid,i,tag)
i += 1
for immlett,bits,immshift in imms:
gen_helper_arg_imm(f,immlett)
i += 1
if hex_common.need_slot(tag):
if i > 0: f.write(", ")
f.write("uint32_t slot")
i += 1
if hex_common.need_part1(tag):
if i > 0: f.write(", ")
f.write("uint32_t part1")
f.write(")\n{\n")
if (not hex_common.need_slot(tag)):
f.write(" uint32_t slot __attribute__((unused)) = 4;\n" )
if hex_common.need_ea(tag): gen_decl_ea(f)
## Declare the return variable
i=0
for regtype,regid,toss,numregs in regs:
if (hex_common.is_writeonly(regid)):
gen_helper_dest_decl_opn(f,regtype,regid,i)
i += 1
if 'A_FPOP' in hex_common.attribdict[tag]:
f.write(' arch_fpop_start(env);\n');
f.write(" %s\n" % hex_common.semdict[tag])
if 'A_FPOP' in hex_common.attribdict[tag]:
f.write(' arch_fpop_end(env);\n');
## Save/return the return variable
for regtype,regid,toss,numregs in regs:
if (hex_common.is_written(regid)):
gen_helper_return_opn(f, regtype, regid, i)
f.write("}\n\n")
## End of the helper definition
def main():
hex_common.read_semantics_file(sys.argv[1])
hex_common.read_attribs_file(sys.argv[2])
hex_common.read_overrides_file(sys.argv[3])
hex_common.calculate_attribs()
tagregs = hex_common.get_tagregs()
tagimms = hex_common.get_tagimms()
with open(sys.argv[4], 'w') as f:
for tag in hex_common.tags:
## Skip the priv instructions
if ( "A_PRIV" in hex_common.attribdict[tag] ) :
continue
## Skip the guest instructions
if ( "A_GUEST" in hex_common.attribdict[tag] ) :
continue
## Skip the diag instructions
if ( tag == "Y6_diag" ) :
continue
if ( tag == "Y6_diag0" ) :
continue
if ( tag == "Y6_diag1" ) :
continue
if ( hex_common.skip_qemu_helper(tag) ):
continue
gen_helper_function(f, tag, tagregs, tagimms)
if __name__ == "__main__":
main()
|
