1# Copyright 1992, 1994, 1995, 1997, 2007, 2008, 2009, 2010, 2011
2# Free Software Foundation, Inc.
3
4# This program is free software; you can redistribute it and/or modify
5# it under the terms of the GNU General Public License as published by
6# the Free Software Foundation; either version 3 of the License, or
7# (at your option) any later version.
8#
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12# GNU General Public License for more details.
13#
14# You should have received a copy of the GNU General Public License
15# along with this program.  If not, see <http://www.gnu.org/licenses/>.
16
17# This file was written by Fred Fish. (fnf@cygnus.com)
18
19if $tracelevel then {
20	strace $tracelevel
21}
22
23
24set testfile "bitfields"
25set srcfile ${testfile}.c
26set binfile ${objdir}/${subdir}/${testfile}
27if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
28    untested bitfields.exp
29    return -1
30}
31
32#
33# Test bitfield locating and uniqueness.
34# For each member, set that member to 1 and verify that the member (and only
35# that member) is 1, then reset it back to 0.
36#
37
38proc bitfield_uniqueness {} {
39    global decimal
40    global hex
41    global gdb_prompt
42    global srcfile
43
44    if { ! [runto break1] } {
45	gdb_suppress_tests;
46    }
47
48    if [gdb_test "print flags" ".*uc = 1 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*"] {
49	gdb_suppress_tests;
50    }
51    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #1"] {
52	gdb_suppress_tests;
53    }
54    # Note that we check for s1 as either 1 or -1, so that failure to
55    # treat it correctly as a signed 1bit field (values 0 or -1) while
56    # printing its value does not cause a spurious failure.  We do the
57    # signedness preservation test later.
58    if [gdb_test "print flags" ".*uc = 0 .*, s1 = (1|-1), u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s1)"] {
59	gdb_suppress_tests;
60    }
61    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #2"] {
62	gdb_suppress_tests;
63    }
64    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u1)"] {
65	gdb_suppress_tests;
66    }
67    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #3"] {
68	gdb_suppress_tests;
69    }
70    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s2)"] {
71	gdb_suppress_tests;
72    }
73    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #4"] {
74	gdb_suppress_tests;
75    }
76    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 1, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u2)"] {
77	gdb_suppress_tests;
78    }
79    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #5"] {
80	gdb_suppress_tests;
81    }
82    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 1, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s3)"] {
83	gdb_suppress_tests;
84    }
85    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #6"] {
86	gdb_suppress_tests;
87    }
88    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 1, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u3)"] {
89	gdb_suppress_tests
90    }
91    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #7"] {
92	gdb_suppress_tests
93    }
94    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 1, u9 = 0, sc = 0.*" "bitfield uniqueness (s9)"] {
95	gdb_suppress_tests
96    }
97    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #8"] {
98	gdb_suppress_tests
99    }
100    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 1, sc = 0.*" "bitfield uniqueness (u9)"] {
101	gdb_suppress_tests
102    }
103    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #9"] {
104	gdb_suppress_tests
105    }
106    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 1.*" "bitfield uniqueness (sc)"] {
107	gdb_suppress_tests
108    }
109    # Hmmmm?
110    gdb_stop_suppressing_tests;
111}
112
113
114#
115# Test bitfield containment.
116# Fill alternating fields with all 1's and verify that none of the bits
117# "bleed over" to the other fields.
118#
119
120proc bitfield_containment {} {
121    global decimal
122    global hex
123    global gdb_prompt
124    global srcfile
125
126    delete_breakpoints
127
128    if { ![runto break2] } {
129	gdb_suppress_tests
130    }
131
132    if [gdb_test "print/x flags" "= {uc = 0xff, s1 = 0x0, u1 = 0x1, s2 = 0x0, u2 = 0x3, s3 = 0x0, u3 = 0x7, s9 = 0x0, u9 = 0x1ff, sc = 0x0}" "bitfield containment #1"] {
133	gdb_suppress_tests
134    }
135
136    if [gdb_test "cont" "Break.*break2 \\(\\) at .*$srcfile:$decimal.*" "continuing to break2"] {
137	gdb_suppress_tests
138    }
139
140    # If program is compiled with Sun CC, then these print out as their
141    # actual sizes; if compiled with gcc, they print out as 0xffffffff
142    # (which strikes me as bogus, but accept it at least for now).
143    if [gdb_test "print/x flags" "= {uc = 0x0, s1 = 0x(1|f*), u1 = 0x0, s2 = 0x(3|f*), u2 = 0x0, s3 = 0x(7|f*), u3 = 0x0, s9 = 0x(1ff|f*), u9 = 0x0, sc = 0xff}" "bitfield containment #2"] {
144	gdb_suppress_tests
145    }
146    gdb_stop_suppressing_tests;
147}
148
149# Test unsigned bitfields for unsignedness and range.
150# Fill the unsigned fields with the maximum positive value and verify that
151# the values are printed correctly.
152
153proc bitfield_unsignedness {} {
154    global decimal
155    global hex
156    global gdb_prompt
157    global srcfile
158
159    delete_breakpoints
160
161    if { ![runto break3] } {
162	gdb_suppress_tests
163    }
164
165    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 3, s3 = 0, u3 = 7, s9 = 0, u9 = 511, sc = 0.*" "unsigned bitfield ranges"] {
166	gdb_suppress_tests
167    }
168    gdb_stop_suppressing_tests;
169}
170
171#
172# Test signed bitfields for signedness and range.
173# Fill the signed fields with the maximum positive value, then the maximally
174# negative value, then -1, and verify in each case that the values are
175# printed correctly.
176#
177
178proc bitfield_signedness {} {
179    global decimal
180    global hex
181    global gdb_prompt
182    global srcfile
183
184    delete_breakpoints
185
186    if { ! [runto break4] } {
187	gdb_suppress_tests
188    }
189
190    if [gdb_test "print flags" "= {uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 3, u3 = 0, s9 = 255, u9 = 0, sc = 0 .*}" "signed bitfields, max positive values"] {
191	gdb_suppress_tests
192    }
193
194    if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #1"] {
195	gdb_suppress_tests
196    }
197
198    # Determine if the target has signed bitfields so we can xfail the
199    # the signed bitfield tests if it doesn't.
200    gdb_test_multiple "print i" "determining signed-ness of bitfields" {
201	-re ".* = -256.*$gdb_prompt $" {
202	    pass "determining signed-ness of bitfields"
203	}
204	-re ".* = 256.*$gdb_prompt $" {
205	    pass "determining signed-ness of bitfields"
206	    setup_xfail "*-*-*"
207	}
208	-re ".*$gdb_prompt $" {
209	    fail "determining signed-ness of bitfields"
210	    gdb_suppress_tests
211	}
212	default {
213	    fail "determining signed-ness of bitfields" ;
214	    gdb_suppress_tests;
215	}
216    }
217
218    if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -2, u2 = 0, s3 = -4, u3 = 0, s9 = -256, u9 = 0, sc = 0.*" "signed bitfields, max negative values"] {
219        gdb_suppress_tests
220    }
221
222    if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #2"] {
223	gdb_suppress_tests
224    }
225
226    if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -1, u2 = 0, s3 = -1, u3 = 0, s9 = -1, u9 = 0, sc = 0.*" "signed bitfields with -1"] {
227	gdb_suppress_tests
228    }
229    # Hmmmm???
230    gdb_stop_suppressing_tests;
231}
232
233# Test bitfields at non-zero offsets in a struct.
234
235proc bitfield_at_offset {} {
236    global decimal
237    global hex
238    global gdb_prompt
239    global srcfile
240
241    gdb_breakpoint break5
242    if [gdb_test "cont" "Break.*break5 \\(\\) at .*$srcfile:$decimal.*" "continuing to break5"] {
243	return
244    }
245
246    set one ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 5, s9 = 0, u9 = 0, sc = 0.*"
247    set two ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 3, s9 = 0, u9 = 0, sc = 0.*"
248    gdb_test "print container" "$one$two" "distinct bitfields in container"
249    gdb_test "print container.one.u3" ".* = 5"
250    gdb_test "print container.two.u3" ".* = 3"
251}
252
253gdb_start
254gdb_reinitialize_dir $srcdir/$subdir
255gdb_load ${binfile}
256
257gdb_test_no_output "set print sevenbit-strings"
258
259bitfield_uniqueness
260if [istarget "mips-idt-*"] then {
261    # Restart because IDT/SIM runs out of file descriptors.
262    gdb_exit
263    gdb_start
264    gdb_reinitialize_dir $srcdir/$subdir
265    gdb_load ${binfile}
266}
267bitfield_containment
268if [istarget "mips-idt-*"] then {
269    # Restart because IDT/SIM runs out of file descriptors.
270    gdb_exit
271    gdb_start
272    gdb_reinitialize_dir $srcdir/$subdir
273    gdb_load ${binfile}
274}
275bitfield_unsignedness
276if [istarget "mips-idt-*"] then {
277    # Restart because IDT/SIM runs out of file descriptors.
278    gdb_exit
279    gdb_start
280    gdb_reinitialize_dir $srcdir/$subdir
281    gdb_load ${binfile}
282}
283bitfield_signedness
284
285bitfield_at_offset
286