blob: 55b0389bce1d73fd6477b19f0a91f1eabcc991f6 (
plain)
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
|
# Copyright 2018-2020 Free Software Foundation, Inc.
# 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 3 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/>.
# Test DW_TAG_variant_part and DW_TAG_variant.
load_lib dwarf.exp
# This test can only be run on targets which support DWARF-2 and use
# gas.
if {![dwarf2_support]} {
return 0
}
standard_testfile .c .S
# Make some DWARF for the test.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
upvar cu_lang cu_lang
declare_labels uinteger_label float_label int8_label
declare_labels discr_1_label discr_2_label discr_3_label
declare_labels one_label two_label
# Creating a CU with 4-byte addresses lets this test link on
# both 32- and 64-bit machines.
cu { addr_size 4 } {
compile_unit {
{name file1.txt}
{language @DW_LANG_Rust}
} {
uinteger_label: DW_TAG_base_type {
{DW_AT_byte_size 4 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_unsigned}
{DW_AT_name {unsigned integer}}
}
int8_label: DW_TAG_base_type {
{DW_AT_byte_size 1 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name i8}
}
float_label: base_type {
{name float}
{encoding @DW_ATE_float}
{byte_size 4 DW_FORM_sdata}
}
one_label: structure_type {
{name One}
{byte_size 4 DW_FORM_sdata}
} {
member {
{name __0}
{type :$uinteger_label}
{data_member_location 0 data1}
}
}
two_label: structure_type {
{name Two}
{byte_size 4 DW_FORM_sdata}
} {
member {
{name __0}
{type :$float_label}
{data_member_location 0 data1}
}
}
structure_type {
{name Simple}
{byte_size 8 DW_FORM_sdata}
} {
variant_part {
{discr :$discr_1_label DW_FORM_ref4}
} {
discr_1_label: member {
{type :$uinteger_label}
{data_member_location 0 data1}
{artificial 1 DW_FORM_flag_present}
}
variant {
{discr_value 23 udata}
} {
member {
{type :$one_label}
{data_member_location 4 data1}
}
}
variant {
{discr_value 1 udata}
} {
member {
{type :$two_label}
{data_member_location 4 data1}
}
}
}
}
structure_type {
{name Defaulted}
{byte_size 8 DW_FORM_sdata}
} {
variant_part {
{discr :$discr_2_label DW_FORM_ref4}
} {
discr_2_label: member {
{type :$uinteger_label}
{data_member_location 0 data1}
{artificial 1 DW_FORM_flag_present}
}
variant {
} {
member {
{type :$one_label}
{data_member_location 4 data1}
}
}
variant {
{discr_value 1 udata}
} {
member {
{type :$two_label}
{data_member_location 4 data1}
}
}
}
}
structure_type {
{name Univariant}
{byte_size 8 DW_FORM_sdata}
} {
variant_part {
} {
variant {
} {
member {
{type :$one_label}
{data_member_location 4 data1}
}
}
}
}
# Rust won't emit a negative discriminant like this, but
# we want to test the code path anyway.
structure_type {
{name Negative}
{byte_size 8 DW_FORM_sdata}
} {
variant_part {
{discr :$discr_3_label DW_FORM_ref4}
} {
discr_3_label: member {
{type :$int8_label}
{data_member_location 0 data1}
{artificial 1 DW_FORM_flag_present}
}
variant {
{discr_value -1 sdata}
} {
member {
{type :$one_label}
{data_member_location 4 data1}
}
}
# Make this the default value so we'll see an
# incorrect result if we mishandle signed
# discriminants.
variant {
} {
member {
{type :$two_label}
{data_member_location 4 data1}
}
}
}
}
}
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] debug] } {
return -1
}
if ![runto func] {
return -1
}
# Get the values into history so we can use it from Rust.
gdb_test "print (void *) buffer" "\\\$1 = .void .. $hex .buffer."
gdb_test "print (void *) buffer2" "\\\$2 = .void .. $hex .buffer2."
gdb_test "set language rust"
gdb_test "print *(\$1 as *mut Simple)" " = One\\(23\\)" \
"print as Simple"
gdb_test "print *(\$1 as *mut Defaulted)" " = One\\(23\\)" \
"print as Defaulted"
gdb_test "print *(\$1 as *mut Univariant)" " = One\\(23\\)" \
"print as Univariant"
gdb_test "print *(\$2 as *mut Negative)" " = One\\(23\\)" \
"print as Negative"
|
