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[gdb/testsuite] Add test-case gold-gdb-index.exp
[deliverable/binutils-gdb.git] / gdb / testsuite / gdb.base / structs.exp
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e53890ae
AC		 1# This testcase is part of GDB, the GNU debugger.
2
b811d2c2 3# Copyright 1996-2020 Free Software Foundation, Inc.
74cf1395
JM		 4
5# This program is free software; you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
e22f8b7c 7# the Free Software Foundation; either version 3 of the License, or
74cf1395 8# (at your option) any later version.
e22f8b7c 9#
74cf1395
JM		 10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13# GNU General Public License for more details.
e22f8b7c 14#
74cf1395 15# You should have received a copy of the GNU General Public License
e22f8b7c 16# along with this program. If not, see <http://www.gnu.org/licenses/>.
74cf1395 17
74cf1395 18
e53890ae
AC		 19# Some targets can't call functions, so don't even bother with this
20# test.
21
22if [target_info exists gdb,cannot_call_functions] {
bc6c7af4 23 unsupported "this target can not call functions"
e53890ae
AC		 24 continue
25}
26
0ab77f5f 27standard_testfile .c
74cf1395 28
8b7dbdc9
JK		 29# Regex matching any value of `char' type like: a = 65 'A'
30set anychar_re {-?[0-9]{1,3} '(.|\\([0-7]{3}|[a-z]|\\|'))'}
31
e53890ae
AC		 32# Create and source the file that provides information about the
33# compiler used to compile the test case.
853d6e5b 34
4c93b1db 35if [get_compiler_info] {
ae59b1da 36 return -1
853d6e5b
AC		 37}
38
62df7e21
YQ		 39set skip_float_test [gdb_skip_float_test]
40
e53890ae
AC		 41# Compile a variant of structs.c using TYPES to specify the type of
42# the first N struct elements (the remaining elements take the type of
43# the last TYPES field). Run the compmiled program up to "main".
44# Also updates the global "testfile" to reflect the most recent build.
853d6e5b 45
8b7dbdc9 46set first 1
e53890ae
AC		 47proc start_structs_test { types } {
48 global testfile
49 global srcfile
50 global binfile
e53890ae
AC		 51 global subdir
52 global srcdir
53 global gdb_prompt
8b7dbdc9
JK		 54 global anychar_re
55 global first
e53890ae
AC		 56
57 # Create the additional flags
58 set flags "debug"
59 set testfile "structs"
60 set n 0
61 for {set n 0} {$n<[llength ${types}]} {incr n} {
62 set m [I2A ${n}]
63 set t [lindex ${types} $n]
64 lappend flags "additional_flags=-Dt${m}=${t}"
65 append testfile "-" "$t"
66 }
67
0ab77f5f 68 set binfile [standard_output_file ${testfile}]
e53890ae
AC		 69 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "${flags}"] != "" } {
70 # built the second test case since we can't use prototypes
71 warning "Prototypes not supported, rebuilding with -DNO_PROTOTYPES"
72 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "${flags} additional_flags=-DNO_PROTOTYPES"] != "" } {
84c93cd5 73 untested "failed to compile"
b60f0898 74 return -1
e53890ae
AC		 75 }
76 }
77
78 # Start with a fresh gdb.
e42c7771 79 gdb_exit
e53890ae
AC		 80 gdb_start
81 gdb_reinitialize_dir $srcdir/$subdir
82 gdb_load ${binfile}
83
84 # Make certain that the output is consistent
2b74ba5a
AB		 85 with_test_prefix "types=$types" {
86 gdb_test_no_output "set print sevenbit-strings"
87 gdb_test_no_output "set print address off"
88 gdb_test_no_output "set width 0"
89 gdb_test_no_output "set print elements 300"
90 }
e53890ae
AC		 91
92 # Advance to main
93 if { ![runto_main] } then {
4ec70201 94 gdb_suppress_tests
e53890ae 95 }
b729099e
MC		 96
97 # Get the debug format
98 get_debug_format
e53890ae 99
8b7dbdc9
JK		 100 # Limit the slow $anychar_re{256} matching for better performance.
101 if $first {
102 set first 0
103
104 # Verify $anychar_re can match all the values of `char' type.
105 gdb_breakpoint [gdb_get_line_number "chartest-done"]
106 gdb_continue_to_breakpoint "chartest-done" ".*chartest-done.*"
2a3ad588
TV		 107 gdb_test_sequence "p chartest" "" \
108 [concat \
109 [list "= \{"] \
110 [lrepeat 255 "^\{c = ${anychar_re}\}, "] \
111 [list "^\{c = ${anychar_re}\}\}"]]
8b7dbdc9
JK		 112 }
113
e53890ae
AC		 114 # check that at the struct containing all the relevant types is correct
115 set foo_t "type = struct struct[llength ${types}] \{"
116 for {set n 0} {$n<[llength ${types}]} {incr n} {
117 append foo_t "\[\r\n \]+[lindex ${types} $n] [i2a $n];"
118 }
119 append foo_t "\[\r\n \]+\}"
120 gdb_test "ptype foo[llength ${types}]" "${foo_t}" \
121 "ptype foo[llength ${types}]; ${testfile}"
74cf1395
JM		 122}
123
e53890ae
AC		 124# The expected value for fun${n}, L${n} and foo${n}. First element is
125# empty to make indexing easier. "foo" returns the modified value,
126# "zed" returns the invalid value.
853d6e5b 127
e53890ae
AC		 128proc foo { n } {
129 return [lindex {
130 "{}"
131 "{a = 49 '1'}"
132 "{a = 97 'a', b = 50 '2'}"
133 "{a = 49 '1', b = 98 'b', c = 51 '3'}"
134 "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4'}"
135 "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5'}"
136 "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6'}"
137 "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7'}"
138 "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6', g = 103 'g', h = 56 '8'}"
139 "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7', h = 104 'h', i = 57 '9'}"
140 "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6', g = 103 'g', h = 56 '8', i = 105 'i', j = 65 'A'}"
141 "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7', h = 104 'h', i = 57 '9', j = 106 'j', k = 66 'B'}"
142 "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6', g = 103 'g', h = 56 '8', i = 105 'i', j = 65 'A', k = 107 'k', l = 67 'C'}"
143 "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7', h = 104 'h', i = 57 '9', j = 106 'j', k = 66 'B', l = 108 'l', m = 68 'D'}"
144 "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6', g = 103 'g', h = 56 '8', i = 105 'i', j = 65 'A', k = 107 'k', l = 67 'C', m = 109 'm', n = 69 'E'}"
145 "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7', h = 104 'h', i = 57 '9', j = 106 'j', k = 66 'B', l = 108 'l', m = 68 'D', n = 110 'n', o = 70 'F'}"
146 "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6', g = 103 'g', h = 56 '8', i = 105 'i', j = 65 'A', k = 107 'k', l = 67 'C', m = 109 'm', n = 69 'E', o = 111 'o', p = 71 'G'}"
147 "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7', h = 104 'h', i = 57 '9', j = 106 'j', k = 66 'B', l = 108 'l', m = 68 'D', n = 110 'n', o = 70 'F', p = 112 'p', q = 72 'H'}"
148 } $n]
149}
150
151proc zed { n } {
152 return [lindex {
153 "{}"
154 "{a = 90 'Z'}"
155 "{a = 90 'Z', b = 90 'Z'}"
156 "{a = 90 'Z', b = 90 'Z', c = 90 'Z'}"
157 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z'}"
158 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z'}"
159 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z'}"
160 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z'}"
161 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z'}"
162 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z'}"
163 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z'}"
164 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z', k = 90 'Z'}"
165 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z', k = 90 'Z', l = 90 'Z'}"
166 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z', k = 90 'Z', l = 90 'Z', m = 90 'Z'}"
167 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z', k = 90 'Z', l = 90 'Z', m = 90 'Z', n = 90 'Z'}"
168 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z', k = 90 'Z', l = 90 'Z', m = 90 'Z', n = 90 'Z', o = 90 'Z'}"
169 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z', k = 90 'Z', l = 90 'Z', m = 90 'Z', n = 90 'Z', o = 90 'Z', p = 90 'Z'}"
170 "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z', i = 90 'Z', j = 90 'Z', k = 90 'Z', l = 90 'Z', m = 90 'Z', n = 90 'Z', o = 90 'Z', p = 90 'Z', q = 90 'Z'}"
171 } $n]
172}
173
987a9106 174proc any { n } {
8b7dbdc9
JK		 175 global anychar_re
176 set ac $anychar_re
177 return [lindex [list \
178 "{}" \
179 "{a = ${ac}}" \
180 "{a = ${ac}, b = ${ac}}" \
181 "{a = ${ac}, b = ${ac}, c = ${ac}}" \
182 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}}" \
183 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}}" \
184 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}}" \
185 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}}" \
186 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}}" \
187 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}}" \
188 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}}" \
189 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}, k = ${ac}}" \
190 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}, k = ${ac}, l = ${ac}}" \
191 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}, k = ${ac}, l = ${ac}, m = ${ac}}" \
192 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}, k = ${ac}, l = ${ac}, m = ${ac}, n = ${ac}}" \
193 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}, k = ${ac}, l = ${ac}, m = ${ac}, n = ${ac}, o = ${ac}}" \
194 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}, k = ${ac}, l = ${ac}, m = ${ac}, n = ${ac}, o = ${ac}, p = ${ac}}" \
195 "{a = ${ac}, b = ${ac}, c = ${ac}, d = ${ac}, e = ${ac}, f = ${ac}, g = ${ac}, h = ${ac}, i = ${ac}, j = ${ac}, k = ${ac}, l = ${ac}, m = ${ac}, n = ${ac}, o = ${ac}, p = ${ac}, q = ${ac}}" \
196 ] $n]
987a9106
JB		 197}
198
e53890ae
AC		 199# Given N (0..25), return the corresponding alphabetic letter in lower
200# or upper case. This is ment to be i18n proof.
201
202proc i2a { n } {
203 return [string range "abcdefghijklmnopqrstuvwxyz" $n $n]
204}
205
206proc I2A { n } {
207 return [string toupper [i2a $n]]
208}
209
210
211# Use the file name, compiler and tuples to set up any needed KFAILs.
212
e53890ae
AC		 213proc setup_compiler_kfails { file compiler format tuples bug } {
214 global testfile
215 if {[string match $file $testfile] && [test_compiler_info $compiler] && [test_debug_format $format]} {
bbc8b958 216 foreach f $tuples { setup_kfail $bug $f }
e53890ae
AC		 217 }
218}
219
220# Test GDB's ability to make inferior function calls to functions
221# returning (or passing in a single structs.
222
223# N identifies the number of elements in the struct that will be used
224# for the test case. FAILS is a list of target tuples that will fail
225# this test.
853d6e5b 226
e53890ae
AC		 227# start_structs_test() will have previously built a program with a
228# specified combination of types for those elements. To ensure
229# robustness of the output, "p/c" is used.
230
231# This tests the code paths "which return-value convention?" and
232# "extract return-value from registers" called by "infcall.c".
233
234proc test_struct_calls { n } {
235 global testfile
b4967060 236 global gdb_prompt
853d6e5b 237
e53890ae
AC		 238 # Check that GDB can always extract a struct-return value from an
239 # inferior function call. Since GDB always knows the location of an
240 # inferior function call's return value these should never fail
241
242 # Implemented by calling the parameterless function "fun$N" and then
243 # examining the return value printed by GDB.
853d6e5b 244
e53890ae 245 set tests "call $n ${testfile}"
853d6e5b 246
e53890ae 247 # Call fun${n}, checking the printed return-value.
338e05af
AC		 248 setup_compiler_kfails structs-tc-tll gcc-3-3-* "DWARF 2" i*86-*-* gdb/1455
249 setup_compiler_kfails structs-tc-td gcc-3-3-* "DWARF 2" i*86-*-* gdb/1455
e53890ae 250 gdb_test "p/c fun${n}()" "[foo ${n}]" "p/c fun<n>(); ${tests}"
853d6e5b 251
e53890ae
AC		 252 # Check that GDB can always pass a structure to an inferior function.
253 # This test can never fail.
254
255 # Implemented by calling the one parameter function "Fun$N" which
256 # stores its parameter in the global variable "L$N". GDB then
257 # examining that global to confirm that the value is as expected.
258
27d3a1a2 259 gdb_test_no_output "call Fun${n}(foo${n})" "call Fun<n>(foo<n>); ${tests}"
338e05af
AC		 260 setup_compiler_kfails structs-tc-tll gcc-3-3-* "DWARF 2" i*86-*-* gdb/1455
261 setup_compiler_kfails structs-tc-td gcc-3-3-* "DWARF 2" i*86-*-* gdb/1455
e53890ae 262 gdb_test "p/c L${n}" [foo ${n}] "p/c L<n>; ${tests}"
b4967060 263}
853d6e5b 264
e53890ae
AC		 265# Test GDB's ability to both return a function (with "return" or
266# "finish") and correctly extract/store any corresponding
267# return-value.
268
269# Check that GDB can consistently extract/store structure return
270# values. There are two cases - returned in registers and returned in
271# memory. For the latter case, the return value can't be found and a
272# failure is "expected". However GDB must still both return the
273# function and display the final source and line information.
274
275# N identifies the number of elements in the struct that will be used
276# for the test case. FAILS is a list of target tuples that will fail
277# this test.
278
279# This tests the code paths "which return-value convention?", "extract
280# return-value from registers", and "store return-value in registers".
281# Unlike "test struct calls", this test is expected to "fail" when the
282# return-value is in memory (GDB can't find the location). The test
283# is in three parts: test "return"; test "finish"; check that the two
284# are consistent. GDB can sometimes work for one command and not the
285# other.
286
287proc test_struct_returns { n } {
288 global gdb_prompt
289 global testfile
290
291 set tests "return $n ${testfile}"
292
293
294 # Check that "return" works.
295
296 # GDB must always force the return of a function that has
297 # a struct result. Dependant on the ABI, it may, or may not be
298 # possible to store the return value in a register.
299
300 # The relevant code looks like "L{n} = fun{n}()". The test forces
301 # "fun{n}" to "return" with an explicit value. Since that code
7a9dd1b2 302 # snippet will store the returned value in "L{n}" the return
e53890ae
AC		 303 # is tested by examining "L{n}". This assumes that the
304 # compiler implemented this as fun{n}(&L{n}) and hence that when
305 # the value isn't stored "L{n}" remains unchanged. Also check for
306 # consistency between this and the "finish" case.
307
308 # Get into a call of fun${n}
309 gdb_test "advance fun${n}" \
310 "fun${n} .*\[\r\n\]+\[0-9\].*return foo${n}.*" \
311 "advance to fun<n> for return; ${tests}"
312
313 # Check that the program invalidated the relevant global.
1bfbbb9d 314 gdb_test "p/c L${n}" " = [zed $n]" "zed L<n> for return; ${tests}"
e53890ae
AC		 315
316 # Force the "return". This checks that the return is always
317 # performed, and that GDB correctly reported this to the user.
318 # GDB 6.0 and earlier, when the return-value's location wasn't
319 # known, both failed to print a final "source and line" and misplaced
320 # the frame ("No frame").
321
322 # The test is writen so that it only reports one FAIL/PASS for the
323 # entire operation. The value returned is checked further down.
b5c0bfa2
AC		 324 # "return_value_known", if non-zero, indicates that GDB knew where
325 # the return value was located.
e53890ae 326
e53890ae 327 set test "return foo<n>; ${tests}"
b5c0bfa2 328 set return_value_known 1
5266b69c 329 set return_value_unimplemented 0
d422fe19 330 gdb_test_multiple "return foo${n}" "${test}" {
e53890ae
AC		 331 -re "The location" {
332 # Ulgh, a struct return, remember this (still need prompt).
b5c0bfa2 333 set return_value_known 0
e53890ae
AC		 334 exp_continue
335 }
336 -re "A structure or union" {
337 # Ulgh, a struct return, remember this (still need prompt).
b5c0bfa2 338 set return_value_known 0
5266b69c
AC		 339 # Double ulgh. Architecture doesn't use return_value and
340 # hence hasn't implemented small structure return.
341 set return_value_unimplemented 1
e53890ae
AC		 342 exp_continue
343 }
344 -re "Make fun${n} return now.*y or n. $" {
d422fe19 345 gdb_test_multiple "y" "${test}" {
e53890ae
AC		 346 -re "L${n} *= fun${n}.*${gdb_prompt} $" {
347 # Need to step off the function call
348 gdb_test "next" "L.* *= fun.*" "${test}"
349 }
350 -re "L[expr ${n} + 1] *= fun[expr ${n} + 1].*${gdb_prompt} $" {
351 pass "${test}"
352 }
e53890ae
AC		 353 }
354 }
e53890ae
AC		 355 }
356
357 # Check that the return-value is as expected. At this stage we're
358 # just checking that GDB has returned a value consistent with
b5c0bfa2 359 # "return_value_known" set above.
987a9106
JB		 360 #
361 # Note that, when return_value_known is false, we can't make any
362 # assumptions at all about the value L<n>:
363 #
364 # - If the caller passed the address of L<n> directly as fun<n>'s
365 # return value buffer, then L<n> will be unchanged, because we
366 # forced fun<n> to return before it could store anything in it.
367 #
368 # - If the caller passed the address of some temporary buffer to
369 # fun<n>, and then copied the buffer into L<n>, then L<n> will
370 # have been overwritten with whatever garbage was in the
371 # uninitialized buffer.
372 #
373 # - However, if the temporary buffer just happened to have the
374 # "right" value of foo<n> in it, then L<n> will, in fact, have
375 # the value you'd expect to see if the 'return' had worked!
376 # This has actually been observed to happen on the Renesas M32C.
377 #
378 # So, really, anything is acceptable unless return_value_known is
379 # true.
e53890ae 380
e53890ae 381 set test "value foo<n> returned; ${tests}"
d422fe19 382 gdb_test_multiple "p/c L${n}" "${test}" {
e53890ae 383 -re " = [foo ${n}].*${gdb_prompt} $" {
987a9106
JB		 384 # This answer is okay regardless of whether GDB claims to
385 # have set the return value: if it did, then this is what
386 # we expected; and if it didn't, then any answer is okay.
387 pass "${test}"
e53890ae 388 }
987a9106 389 -re " = [any $n].*${gdb_prompt} $" {
b5c0bfa2
AC		 390 if $return_value_known {
391 # This contradicts the above claim that GDB knew
987a9106 392 # the location of the return value.
b5c0bfa2
AC		 393 fail "${test}"
394 } else {
987a9106
JB		 395 # We expected L${n} to be set to garbage, so any
396 # answer is acceptable.
e53890ae 397 pass "${test}"
e53890ae
AC		 398 }
399 }
5266b69c
AC		 400 -re ".*${gdb_prompt} $" {
401 if $return_value_unimplemented {
402 # What a suprize. The architecture hasn't implemented
403 # return_value, and hence has to fail.
404 kfail "$test" gdb/1444
405 } else {
406 fail "$test"
407 }
408 }
e53890ae
AC		 409 }
410
411 # Check that a "finish" works.
412
413 # This is almost but not quite the same as "call struct funcs".
414 # Architectures can have subtle differences in the two code paths.
415
416 # The relevant code snippet is "L{n} = fun{n}()". The program is
417 # advanced into a call to "fun{n}" and then that function is
418 # finished. The returned value that GDB prints, reformatted using
419 # "p/c", is checked.
420
421 # Get into "fun${n}()".
422 gdb_test "advance fun${n}" \
423 "fun${n} .*\[\r\n\]+\[0-9\].*return foo${n}.*" \
424 "advance to fun<n> for finish; ${tests}"
425
426 # Check that the program invalidated the relevant global.
e53890ae
AC		 427 gdb_test "p/c L${n}" " = [zed $n]" "zed L<n> for finish; ${tests}"
428
b5c0bfa2
AC		 429 # Finish the function, set 'finish_value_known" to non-empty if
430 # the return-value was found.
431
6882279b 432 set test "finish foo<n>; ${tests}"
b5c0bfa2 433 set finish_value_known 1
d422fe19 434 gdb_test_multiple "finish" "${test}" {
e53890ae
AC		 435 -re "Value returned is .*${gdb_prompt} $" {
436 pass "${test}"
437 }
2f41223f 438 -re "Value returned has type: struct struct$n. Cannot determine contents.*${gdb_prompt} $" {
e53890ae 439 # Expected bad value. For the moment this is ok.
b5c0bfa2 440 set finish_value_known 0
e53890ae
AC		 441 pass "${test}"
442 }
e53890ae
AC		 443 }
444
445 # Re-print the last (return-value) using the more robust
446 # "p/c". If no return value was found, the 'Z' from the previous
447 # check that the variable was cleared, is printed.
6882279b 448 set test "value foo<n> finished; ${tests}"
d422fe19 449 gdb_test_multiple "p/c" "${test}" {
e53890ae 450 -re "[foo ${n}]\[\r\n\]+${gdb_prompt} $" {
b5c0bfa2
AC		 451 if $finish_value_known {
452 pass "${test}"
453 } else {
e53890ae
AC		 454 # This contradicts the above claim that GDB didn't
455 # know the location of the return-value.
456 fail "${test}"
e53890ae
AC		 457 }
458 }
459 -re "[zed ${n}]\[\r\n\]+${gdb_prompt} $" {
460 # The value didn't get found. This is "expected".
b5c0bfa2 461 if $finish_value_known {
e53890ae
AC		 462 # This contradicts the above claim that GDB did
463 # know the location of the return-value.
464 fail "${test}"
b5c0bfa2
AC		 465 } else {
466 pass "${test}"
e53890ae
AC		 467 }
468 }
e53890ae
AC		 469 }
470
471 # Finally, check that "return" and finish" have consistent
472 # behavior.
473
b5c0bfa2
AC		 474 # Since "finish" works in more cases than "return" (see
475 # RETURN_VALUE_ABI_RETURNS_ADDRESS and
476 # RETURN_VALUE_ABI_PRESERVES_ADDRESS), the "return" value being
477 # known implies that the "finish" value is known (but not the
478 # reverse).
e53890ae 479
b5c0bfa2
AC		 480 set test "return value known implies finish value known; ${tests}"
481 if {$return_value_known && ! $finish_value_known} {
e53890ae 482 kfail gdb/1444 "${test}"
b5c0bfa2
AC		 483 } else {
484 pass "${test}"
e53890ae 485 }
b4967060 486}
853d6e5b 487
e53890ae
AC		 488# ABIs pass anything >8 or >16 bytes in memory but below that things
489# randomly use register and/and structure conventions. Check all
490# possible sized char structs in that range. But only a restricted
491# range of the other types.
492
493# NetBSD/PPC returns "unnatural" (3, 5, 6, 7) sized structs in memory.
494
e53890ae
AC		 495# Test every single char struct from 1..17 in size. This is what the
496# original "structs" test was doing.
497
498start_structs_test { tc }
499test_struct_calls 1
500test_struct_calls 2
501test_struct_calls 3
502test_struct_calls 4
503test_struct_calls 5
504test_struct_calls 6
505test_struct_calls 7
506test_struct_calls 8
507test_struct_calls 9
508test_struct_calls 10
509test_struct_calls 11
510test_struct_calls 12
511test_struct_calls 13
512test_struct_calls 14
513test_struct_calls 15
514test_struct_calls 16
515test_struct_calls 17
516test_struct_returns 1
517test_struct_returns 2
518test_struct_returns 3
519test_struct_returns 4
520test_struct_returns 5
521test_struct_returns 6
522test_struct_returns 7
523test_struct_returns 8
524
525
526# Let the fun begin.
527
528# Assuming that any integer struct larger than 8 bytes goes in memory,
529# come up with many and varied combinations of a return struct. For
530# "struct calls" test just beyond that 8 byte boundary, for "struct
531# returns" test up to that boundary.
532
533# For floats, assumed that up to two struct elements can be stored in
534# floating point registers, regardless of their size.
535
536# The approx size of each structure it is computed assumed that tc=1,
537# ts=2, ti=4, tl=4, tll=8, tf=4, td=8, tld=16, and that all fields are
c1862d0f 538# naturally aligned. Padding being added where needed.
e53890ae
AC		 539
540# Approx size: 2, 4, ...
541start_structs_test { ts }
542test_struct_calls 1
543test_struct_calls 2
544test_struct_calls 3
545test_struct_calls 4
546test_struct_calls 5
547test_struct_returns 1
548test_struct_returns 2
549test_struct_returns 3
550test_struct_returns 4
551
552# Approx size: 4, 8, ...
553start_structs_test { ti }
554test_struct_calls 1
555test_struct_calls 2
556test_struct_calls 3
557test_struct_returns 1
558test_struct_returns 2
559
560# Approx size: 4, 8, ...
561start_structs_test { tl }
562test_struct_calls 1
563test_struct_calls 2
564test_struct_calls 3
565test_struct_returns 1
566test_struct_returns 2
567
568# Approx size: 8, 16, ...
569start_structs_test { tll }
570test_struct_calls 1
571test_struct_calls 2
572test_struct_returns 1
573
62df7e21
YQ		 574if { !$skip_float_test } {
575 # Approx size: 4, 8, ...
576 start_structs_test { tf }
577 test_struct_calls 1
578 test_struct_calls 2
579 test_struct_calls 3
580 test_struct_returns 1
581 test_struct_returns 2
582
583 # Approx size: 8, 16, ...
584 start_structs_test { td }
585 test_struct_calls 1
586 test_struct_calls 2
587 test_struct_returns 1
588
589 # Approx size: 16, 32, ...
590 start_structs_test { tld }
591 test_struct_calls 1
592 test_struct_calls 2
593 test_struct_returns 1
594}
e53890ae
AC		 595
596# Approx size: 2+1=3, 4, ...
597start_structs_test { ts tc }
598test_struct_calls 2
599test_struct_calls 3
600test_struct_calls 4
601test_struct_calls 5
602test_struct_calls 6
603test_struct_calls 7
604test_struct_calls 8
605test_struct_returns 2
606
607# Approx size: 4+1=5, 6, ...
608start_structs_test { ti tc }
609test_struct_calls 2
610test_struct_calls 3
611test_struct_calls 4
612test_struct_calls 5
613test_struct_calls 6
614test_struct_returns 2
615
616# Approx size: 4+1=5, 6, ...
617start_structs_test { tl tc }
618test_struct_calls 2
619test_struct_calls 3
620test_struct_calls 4
621test_struct_calls 5
622test_struct_calls 6
623test_struct_returns 2
624
625# Approx size: 8+1=9, 10, ...
626start_structs_test { tll tc }
627test_struct_calls 2
628
62df7e21
YQ		 629if { !$skip_float_test } {
630 # Approx size: 4+1=5, 6, ...
631 start_structs_test { tf tc }
632 test_struct_calls 2
633 test_struct_calls 3
634 test_struct_calls 4
635 test_struct_calls 5
636 test_struct_calls 6
637 test_struct_returns 2
638
639 # Approx size: 8+1=9, 10, ...
640 start_structs_test { td tc }
641 test_struct_calls 2
642
643 # Approx size: 16+1=17, 18, ...
644 start_structs_test { tld tc }
645 test_struct_calls 2
646}
e53890ae
AC		 647
648# Approx size: (1+1)+2=4, 6, ...
649start_structs_test { tc ts }
650test_struct_calls 2
651test_struct_calls 3
652test_struct_calls 4
653test_struct_calls 5
654test_struct_calls 6
655test_struct_returns 2
656
657# Approx size: (1+3)+4=8, 12, ...
658start_structs_test { tc ti }
659test_struct_calls 2
660test_struct_calls 3
661test_struct_calls 4
662test_struct_returns 2
663
664# Approx size: (1+3)+4=8, 12, ...
665start_structs_test { tc tl }
666test_struct_calls 2
667test_struct_calls 3
668test_struct_calls 4
669test_struct_returns 2
670
671# Approx size: (1+7)+8=16, 24, ...
672start_structs_test { tc tll }
673test_struct_calls 2
674
62df7e21
YQ		 675if { !$skip_float_test } {
676 # Approx size: (1+3)+4=8, 12, ...
677 start_structs_test { tc tf }
678 test_struct_calls 2
679 test_struct_calls 3
680 test_struct_calls 4
e53890ae 681
62df7e21
YQ		 682 # Approx size: (1+7)+8=16, 24, ...
683 start_structs_test { tc td }
684 test_struct_calls 2
e53890ae 685
62df7e21
YQ		 686 # Approx size: (1+15)+16=32, 48, ...
687 start_structs_test { tc tld }
688 test_struct_calls 2
e53890ae 689
62df7e21 690 # Some float combinations
74cf1395 691
62df7e21
YQ		 692 # Approx size: 8+4=12, 16, ...
693 start_structs_test { td tf }
694 test_struct_calls 2
695 test_struct_returns 2
74cf1395 696
62df7e21
YQ		 697 # Approx size: (4+4)+8=16, 32, ...
698 start_structs_test { tf td }
699 test_struct_calls 2
700 test_struct_returns 2
701}
74cf1395 702return 0
GDB Binutils - Deliverables
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