gdb/testsuite/gdb.base/structs.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 1996, 1997, 1999, 2003 Free Software Foundation, Inc.
   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
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  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.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19 # Please email any bugs, comments, and/or additions to this file to:
  20 # bug-gdb@prep.ai.mit.edu
  21
  22 if $tracelevel then {
  23         strace $tracelevel
  24 }
  25
  26 set prms_id 0
  27 set bug_id 0
  28
  29 # Some targets can't call functions, so don't even bother with this
  30 # test.
  31
  32 if [target_info exists gdb,cannot_call_functions] {
  33     setup_xfail "*-*-*"
  34     fail "This target can not call functions"
  35     continue
  36 }
  37
  38 set testfile "structs"
  39 set srcfile ${testfile}.c
  40 set binfile ${objdir}/${subdir}/${testfile}
  41
  42 # Create and source the file that provides information about the
  43 # compiler used to compile the test case.
  44
  45 if [get_compiler_info ${binfile}] {
  46     return -1;
  47 }
  48
  49 # Compile a variant of structs.c using TYPES to specify the type of
  50 # the first N struct elements (the remaining elements take the type of
  51 # the last TYPES field).  Run the compmiled program up to "main".
  52 # Also updates the global "testfile" to reflect the most recent build.
  53
  54 proc start_structs_test { types } {
  55     global testfile
  56     global srcfile
  57     global binfile
  58     global objdir
  59     global subdir
  60     global srcdir
  61     global gdb_prompt
  62
  63     # Create the additional flags
  64     set flags "debug"
  65     set testfile "structs"
  66     set n 0
  67     for {set n 0} {$n<[llength ${types}]} {incr n} {
  68         set m [I2A ${n}]
  69         set t [lindex ${types} $n]
  70         lappend flags "additional_flags=-Dt${m}=${t}"
  71         append testfile "-" "$t"
  72     }
  73
  74     set binfile ${objdir}/${subdir}/${testfile}
  75     if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "${flags}"] != "" } {
  76         # built the second test case since we can't use prototypes
  77         warning "Prototypes not supported, rebuilding with -DNO_PROTOTYPES"
  78         if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "${flags} additional_flags=-DNO_PROTOTYPES"] != "" } {
  79             gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  80         }
  81     }
  82
  83     # Start with a fresh gdb.
  84     gdb_exit
  85     gdb_start
  86     gdb_reinitialize_dir $srcdir/$subdir
  87     gdb_load ${binfile}
  88
  89     # Make certain that the output is consistent
  90     gdb_test "set print sevenbit-strings" "" \
  91             "set print sevenbit-strings; ${testfile}"
  92     gdb_test "set print address off" "" \
  93             "set print address off; ${testfile}"
  94     gdb_test "set width 0" "" \
  95             "set width 0; ${testfile}"
  96
  97     # Advance to main
  98     if { ![runto_main] } then {
  99         gdb_suppress_tests;
 100     }
 101
 102     # Get the debug format
 103     get_debug_format
 104
 105     # check that at the struct containing all the relevant types is correct
 106     set foo_t "type = struct struct[llength ${types}] \{"
 107     for {set n 0} {$n<[llength ${types}]} {incr n} {
 108         append foo_t "\[\r\n \]+[lindex ${types} $n] [i2a $n];"
 109     }
 110     append foo_t "\[\r\n \]+\}"
 111     gdb_test "ptype foo[llength ${types}]" "${foo_t}" \
 112             "ptype foo[llength ${types}]; ${testfile}"
 113 }
 114
 115 # The expected value for fun${n}, L${n} and foo${n}.  First element is
 116 # empty to make indexing easier.  "foo" returns the modified value,
 117 # "zed" returns the invalid value.
 118
 119 proc foo { n } {
 120     return [lindex {
 121         "{}"
 122         "{a = 49 '1'}"
 123         "{a = 97 'a', b = 50 '2'}"
 124         "{a = 49 '1', b = 98 'b', c = 51 '3'}"
 125         "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4'}"
 126         "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5'}"
 127         "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6'}"
 128         "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7'}"
 129         "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6', g = 103 'g', h = 56 '8'}"
 130         "{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'}"
 131         "{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'}"
 132         "{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'}"
 133         "{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'}"
 134         "{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'}"
 135         "{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'}"
 136         "{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'}"
 137         "{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'}"
 138         "{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'}"
 139     } $n]
 140 }
 141
 142 proc zed { n } {
 143     return [lindex {
 144         "{}"
 145         "{a = 90 'Z'}"
 146         "{a = 90 'Z', b = 90 'Z'}"
 147         "{a = 90 'Z', b = 90 'Z', c = 90 'Z'}"
 148         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z'}"
 149         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z'}"
 150         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z'}"
 151         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z'}"
 152         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 90 'Z'}"
 153         "{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'}"
 154         "{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'}"
 155         "{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'}"
 156         "{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'}"
 157         "{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'}"
 158         "{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'}"
 159         "{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'}"
 160         "{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'}"
 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', 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'}"
 162     } $n]
 163 }
 164
 165 # Given N (0..25), return the corresponding alphabetic letter in lower
 166 # or upper case.  This is ment to be i18n proof.
 167
 168 proc i2a { n } {
 169     return [string range "abcdefghijklmnopqrstuvwxyz" $n $n]
 170 }
 171
 172 proc I2A { n } {
 173     return [string toupper [i2a $n]]
 174 }
 175
 176
 177 # Use the file name, compiler and tuples to set up any needed KFAILs.
 178
 179 proc setup_kfails { file tuples bug } {
 180     global testfile
 181     if [string match $file $testfile] {
 182         foreach f $tuples { setup_kfail $f $bug }
 183     }
 184 }
 185
 186 proc setup_compiler_kfails { file compiler format tuples bug } {
 187     global testfile
 188     if {[string match $file $testfile] && [test_compiler_info $compiler]  && [test_debug_format $format]} {
 189         foreach f $tuples { setup_kfail $f $bug }
 190     }
 191 }
 192
 193 # Test GDB's ability to make inferior function calls to functions
 194 # returning (or passing in a single structs.
 195
 196 # N identifies the number of elements in the struct that will be used
 197 # for the test case.  FAILS is a list of target tuples that will fail
 198 # this test.
 199
 200 #  start_structs_test() will have previously built a program with a
 201 # specified combination of types for those elements.  To ensure
 202 # robustness of the output, "p/c" is used.
 203
 204 # This tests the code paths "which return-value convention?" and
 205 # "extract return-value from registers" called by "infcall.c".
 206
 207 proc test_struct_calls { n } {
 208     global testfile
 209     global gdb_prompt
 210
 211     # Check that GDB can always extract a struct-return value from an
 212     # inferior function call.  Since GDB always knows the location of an
 213     # inferior function call's return value these should never fail
 214
 215     # Implemented by calling the parameterless function "fun$N" and then
 216     # examining the return value printed by GDB.
 217
 218     set tests "call $n ${testfile}"
 219
 220     # Call fun${n}, checking the printed return-value.
 221     setup_kfails structs-*tld* i*86-*-* gdb/1447
 222     setup_compiler_kfails structs-tc-* gcc-3-3 "DWARF 2" i*86-*-* gdb/1455
 223     gdb_test "p/c fun${n}()"  "[foo ${n}]" "p/c fun<n>(); ${tests}"
 224
 225     # Check that GDB can always pass a structure to an inferior function.
 226     # This test can never fail.
 227
 228     # Implemented by calling the one parameter function "Fun$N" which
 229     # stores its parameter in the global variable "L$N".  GDB then
 230     # examining that global to confirm that the value is as expected.
 231
 232     gdb_test "call Fun${n}(foo${n})" "" "call Fun<n>(foo<n>); ${tests}"
 233     setup_kfails structs-*tld* i*86-*-* gdb/1447
 234     setup_compiler_kfails structs-tc-* gcc-3-3 "DWARF 2" i*86-*-* gdb/1455
 235     gdb_test "p/c L${n}" [foo ${n}] "p/c L<n>; ${tests}"
 236 }
 237
 238 # Test GDB's ability to both return a function (with "return" or
 239 # "finish") and correctly extract/store any corresponding
 240 # return-value.
 241
 242 # Check that GDB can consistently extract/store structure return
 243 # values.  There are two cases - returned in registers and returned in
 244 # memory.  For the latter case, the return value can't be found and a
 245 # failure is "expected".  However GDB must still both return the
 246 # function and display the final source and line information.
 247
 248 # N identifies the number of elements in the struct that will be used
 249 # for the test case.  FAILS is a list of target tuples that will fail
 250 # this test.
 251
 252 # This tests the code paths "which return-value convention?", "extract
 253 # return-value from registers", and "store return-value in registers".
 254 # Unlike "test struct calls", this test is expected to "fail" when the
 255 # return-value is in memory (GDB can't find the location).  The test
 256 # is in three parts: test "return"; test "finish"; check that the two
 257 # are consistent.  GDB can sometimes work for one command and not the
 258 # other.
 259
 260 proc test_struct_returns { n } {
 261     global gdb_prompt
 262     global testfile
 263
 264     set tests "return $n ${testfile}"
 265
 266
 267     # Check that "return" works.
 268
 269     # GDB must always force the return of a function that has
 270     # a struct result.  Dependant on the ABI, it may, or may not be
 271     # possible to store the return value in a register.
 272
 273     # The relevant code looks like "L{n} = fun{n}()".  The test forces
 274     # "fun{n}" to "return" with an explicit value.  Since that code
 275     # snippet will store the the returned value in "L{n}" the return
 276     # is tested by examining "L{n}".  This assumes that the
 277     # compiler implemented this as fun{n}(&L{n}) and hence that when
 278     # the value isn't stored "L{n}" remains unchanged.  Also check for
 279     # consistency between this and the "finish" case.
 280
 281     # Get into a call of fun${n}
 282     gdb_test "advance fun${n}" \
 283             "fun${n} .*\[\r\n\]+\[0-9\].*return foo${n}.*" \
 284             "advance to fun<n> for return; ${tests}"
 285
 286     # Check that the program invalidated the relevant global.
 287     setup_kfails structs-tld i*86-*-* gdb/1447
 288     gdb_test "p/c L${n}" " = [zed $n]" "zed L<n> for return; ${tests} .${testfile}."
 289
 290     # Force the "return".  This checks that the return is always
 291     # performed, and that GDB correctly reported this to the user.
 292     # GDB 6.0 and earlier, when the return-value's location wasn't
 293     # known, both failed to print a final "source and line" and misplaced
 294     # the frame ("No frame").
 295
 296     # The test is writen so that it only reports one FAIL/PASS for the
 297     # entire operation.  The value returned is checked further down.
 298     # "return_value_unknown", if non-empty, records why GDB realised
 299     # that it didn't know where the return value was.
 300
 301     set test "return foo<n>; ${tests}"
 302     set return_value_unknown 0
 303     set return_value_unimplemented 0
 304     gdb_test_multiple "return foo${n}" "${test}" {
 305         -re "The location" {
 306             # Ulgh, a struct return, remember this (still need prompt).
 307             set return_value_unknown 1
 308             exp_continue
 309         }
 310         -re "A structure or union" {
 311             # Ulgh, a struct return, remember this (still need prompt).
 312             set return_value_unknown 1
 313             # Double ulgh.  Architecture doesn't use return_value and
 314             # hence hasn't implemented small structure return.
 315             set return_value_unimplemented 1
 316             exp_continue
 317         }
 318         -re "Make fun${n} return now.*y or n. $" {
 319             gdb_test_multiple "y" "${test}" {
 320                 -re "L${n} *= fun${n}.*${gdb_prompt} $" {
 321                     # Need to step off the function call
 322                     gdb_test "next" "L.* *= fun.*" "${test}"
 323                 }
 324                 -re "L[expr ${n} + 1] *= fun[expr ${n} + 1].*${gdb_prompt} $" {
 325                     pass "${test}"
 326                 }
 327             }
 328         }
 329     }
 330
 331     # Check that the return-value is as expected.  At this stage we're
 332     # just checking that GDB has returned a value consistent with
 333     # "return_value_unknown" set above.
 334
 335     set test "value foo<n> returned; ${tests}"
 336     setup_kfails structs-*tld* i*86-*-* gdb/1447
 337     gdb_test_multiple "p/c L${n}" "${test}" {
 338         -re " = [foo ${n}].*${gdb_prompt} $" {
 339             if $return_value_unknown {
 340                 # This contradicts the above claim that GDB didn't
 341                 # know the location of the return-value.
 342                 fail "${test}"
 343             } else {
 344                 pass "${test}"
 345             }
 346         }
 347         -re " = [zed ${n}].*${gdb_prompt} $" {
 348             if $return_value_unknown {
 349                 # The struct return case.  Since any modification
 350                 # would be by reference, and that can't happen, the
 351                 # value should be unmodified and hence Z is expected.
 352                 # Is this a reasonable assumption?
 353                 pass "${test}"
 354             } else {
 355                 # This contradicts the above claim that GDB knew
 356                 # the location of the return-value.
 357                 fail "${test}"
 358             }
 359         }
 360         -re ".*${gdb_prompt} $" {
 361             if $return_value_unimplemented {
 362                 # What a suprize.  The architecture hasn't implemented
 363                 # return_value, and hence has to fail.
 364                 kfail "$test" gdb/1444
 365             } else {
 366                 fail "$test"
 367             }
 368         }
 369     }
 370
 371     # Check that a "finish" works.
 372
 373     # This is almost but not quite the same as "call struct funcs".
 374     # Architectures can have subtle differences in the two code paths.
 375
 376     # The relevant code snippet is "L{n} = fun{n}()".  The program is
 377     # advanced into a call to  "fun{n}" and then that function is
 378     # finished.  The returned value that GDB prints, reformatted using
 379     # "p/c", is checked.
 380
 381     # Get into "fun${n}()".
 382     gdb_test "advance fun${n}" \
 383             "fun${n} .*\[\r\n\]+\[0-9\].*return foo${n}.*" \
 384             "advance to fun<n> for finish; ${tests}"
 385
 386     # Check that the program invalidated the relevant global.
 387     setup_kfails structs-tld i*86-*-* gdb/1447
 388     gdb_test "p/c L${n}" " = [zed $n]" "zed L<n> for finish; ${tests}"
 389
 390     # Finish the function, set 'finish_value_unknown" to non-empty if the
 391     # return-value was not found.
 392     set test "finish foo<n>; ${tests}"
 393     set finish_value_unknown 0
 394     gdb_test_multiple "finish" "${test}" {
 395         -re "Value returned is .*${gdb_prompt} $" {
 396             pass "${test}"
 397         }
 398         -re "Cannot determine contents.*${gdb_prompt} $" {
 399             # Expected bad value.  For the moment this is ok.
 400             set finish_value_unknown 1
 401             pass "${test}"
 402         }
 403     }
 404
 405     # Re-print the last (return-value) using the more robust
 406     # "p/c".  If no return value was found, the 'Z' from the previous
 407     # check that the variable was cleared, is printed.
 408     set test "value foo<n> finished; ${tests}"
 409     setup_kfails structs-*tld* i*86-*-* gdb/1447
 410     gdb_test_multiple "p/c" "${test}" {
 411         -re "[foo ${n}]\[\r\n\]+${gdb_prompt} $" {
 412             if $finish_value_unknown {
 413                 # This contradicts the above claim that GDB didn't
 414                 # know the location of the return-value.
 415                 fail "${test}"
 416             } else {
 417                 pass "${test}"
 418             }
 419         }
 420         -re "[zed ${n}]\[\r\n\]+${gdb_prompt} $" {
 421             # The value didn't get found.  This is "expected".
 422             if $finish_value_unknown {
 423                 pass "${test}"
 424             } else {
 425                 # This contradicts the above claim that GDB did
 426                 # know the location of the return-value.
 427                 fail "${test}"
 428             }
 429         }
 430     }
 431
 432     # Finally, check that "return" and finish" have consistent
 433     # behavior.
 434
 435     # Since both "return" and "finish" use equivalent "which
 436     # return-value convention" logic, both commands should have
 437     # identical can/can-not find return-value messages.
 438
 439     # Note that since "call" and "finish" use common code paths, a
 440     # failure here is a strong indicator of problems with "store
 441     # return-value" code paths.  Suggest looking at "return_value"
 442     # when investigating a fix.
 443
 444     set test "return and finish use same convention; ${tests}"
 445     if {$finish_value_unknown == $return_value_unknown} {
 446         pass "${test}"
 447     } else {
 448         kfail gdb/1444 "${test}"
 449     }
 450 }
 451
 452 # ABIs pass anything >8 or >16 bytes in memory but below that things
 453 # randomly use register and/and structure conventions.  Check all
 454 # possible sized char structs in that range.  But only a restricted
 455 # range of the other types.
 456
 457 # NetBSD/PPC returns "unnatural" (3, 5, 6, 7) sized structs in memory.
 458
 459 # d10v is weird. 5/6 byte structs go in memory.  2 or more char
 460 # structs go in memory.  Everything else is in a register!
 461
 462 # Test every single char struct from 1..17 in size.  This is what the
 463 # original "structs" test was doing.
 464
 465 start_structs_test { tc }
 466 test_struct_calls 1
 467 test_struct_calls 2
 468 test_struct_calls 3
 469 test_struct_calls 4
 470 test_struct_calls 5
 471 test_struct_calls 6
 472 test_struct_calls 7
 473 test_struct_calls 8
 474 test_struct_calls 9
 475 test_struct_calls 10
 476 test_struct_calls 11
 477 test_struct_calls 12
 478 test_struct_calls 13
 479 test_struct_calls 14
 480 test_struct_calls 15
 481 test_struct_calls 16
 482 test_struct_calls 17
 483 test_struct_returns 1
 484 test_struct_returns 2
 485 test_struct_returns 3
 486 test_struct_returns 4
 487 test_struct_returns 5
 488 test_struct_returns 6
 489 test_struct_returns 7
 490 test_struct_returns 8
 491
 492
 493 # Let the fun begin.
 494
 495 # Assuming that any integer struct larger than 8 bytes goes in memory,
 496 # come up with many and varied combinations of a return struct.  For
 497 # "struct calls" test just beyond that 8 byte boundary, for "struct
 498 # returns" test up to that boundary.
 499
 500 # For floats, assumed that up to two struct elements can be stored in
 501 # floating point registers, regardless of their size.
 502
 503 # The approx size of each structure it is computed assumed that tc=1,
 504 # ts=2, ti=4, tl=4, tll=8, tf=4, td=8, tld=16, and that all fields are
 505 # naturally aligned.  Padding being added where needed.  Note that
 506 # these numbers are just approx, the d10v has ti=2, a 64-bit has has
 507 # tl=8.
 508
 509 # Approx size: 2, 4, ...
 510 start_structs_test { ts }
 511 test_struct_calls 1
 512 test_struct_calls 2
 513 test_struct_calls 3
 514 test_struct_calls 4
 515 test_struct_calls 5
 516 test_struct_returns 1
 517 test_struct_returns 2
 518 test_struct_returns 3
 519 test_struct_returns 4
 520
 521 # Approx size: 4, 8, ...
 522 start_structs_test { ti }
 523 test_struct_calls 1
 524 test_struct_calls 2
 525 test_struct_calls 3
 526 test_struct_returns 1
 527 test_struct_returns 2
 528
 529 # Approx size: 4, 8, ...
 530 start_structs_test { tl }
 531 test_struct_calls 1
 532 test_struct_calls 2
 533 test_struct_calls 3
 534 test_struct_returns 1
 535 test_struct_returns 2
 536
 537 # Approx size: 8, 16, ...
 538 start_structs_test { tll }
 539 test_struct_calls 1
 540 test_struct_calls 2
 541 test_struct_returns 1
 542
 543 # Approx size: 4, 8, ...
 544 start_structs_test { tf }
 545 test_struct_calls 1
 546 test_struct_calls 2
 547 test_struct_calls 3
 548 test_struct_returns 1
 549 test_struct_returns 2
 550
 551 # Approx size: 8, 16, ...
 552 start_structs_test { td }
 553 test_struct_calls 1
 554 test_struct_calls 2
 555 test_struct_returns 1
 556
 557 # Approx size: 16, 32, ...
 558 start_structs_test { tld }
 559 test_struct_calls 1
 560 test_struct_calls 2
 561 test_struct_returns 1
 562
 563 # Approx size: 2+1=3, 4, ...
 564 start_structs_test { ts tc }
 565 test_struct_calls 2
 566 test_struct_calls 3
 567 test_struct_calls 4
 568 test_struct_calls 5
 569 test_struct_calls 6
 570 test_struct_calls 7
 571 test_struct_calls 8
 572 test_struct_returns 2
 573
 574 # Approx size: 4+1=5, 6, ...
 575 start_structs_test { ti tc }
 576 test_struct_calls 2
 577 test_struct_calls 3
 578 test_struct_calls 4
 579 test_struct_calls 5
 580 test_struct_calls 6
 581 test_struct_returns 2
 582
 583 # Approx size: 4+1=5, 6, ...
 584 start_structs_test { tl tc }
 585 test_struct_calls 2
 586 test_struct_calls 3
 587 test_struct_calls 4
 588 test_struct_calls 5
 589 test_struct_calls 6
 590 test_struct_returns 2
 591
 592 # Approx size: 8+1=9, 10, ...
 593 start_structs_test { tll tc }
 594 test_struct_calls 2
 595
 596 # Approx size: 4+1=5, 6, ...
 597 start_structs_test { tf tc }
 598 test_struct_calls 2
 599 test_struct_calls 3
 600 test_struct_calls 4
 601 test_struct_calls 5
 602 test_struct_calls 6
 603 test_struct_returns 2
 604
 605 # Approx size: 8+1=9, 10, ...
 606 start_structs_test { td tc }
 607 test_struct_calls 2
 608
 609 # Approx size: 16+1=17, 18, ...
 610 start_structs_test { tld tc }
 611 test_struct_calls 2
 612
 613 # Approx size: (1+1)+2=4, 6, ...
 614 start_structs_test { tc ts }
 615 test_struct_calls 2
 616 test_struct_calls 3
 617 test_struct_calls 4
 618 test_struct_calls 5
 619 test_struct_calls 6
 620 test_struct_returns 2
 621
 622 # Approx size: (1+3)+4=8, 12, ...
 623 start_structs_test { tc ti }
 624 test_struct_calls 2
 625 test_struct_calls 3
 626 test_struct_calls 4
 627 test_struct_returns 2
 628
 629 # Approx size: (1+3)+4=8, 12, ...
 630 start_structs_test { tc tl }
 631 test_struct_calls 2
 632 test_struct_calls 3
 633 test_struct_calls 4
 634 test_struct_returns 2
 635
 636 # Approx size: (1+7)+8=16, 24, ...
 637 start_structs_test { tc tll }
 638 test_struct_calls 2
 639
 640 # Approx size: (1+3)+4=8, 12, ...
 641 start_structs_test { tc tf }
 642 test_struct_calls 2
 643 test_struct_calls 3
 644 test_struct_calls 4
 645
 646 # Approx size: (1+7)+8=16, 24, ...
 647 start_structs_test { tc td }
 648 test_struct_calls 2
 649
 650 # Approx size: (1+15)+16=32, 48, ...
 651 start_structs_test { tc tld }
 652 test_struct_calls 2
 653
 654 # Some float combinations
 655
 656 # Approx size: 8+4=12, 16, ...
 657 # d10v: 4+4=8, 12, ...
 658 start_structs_test { td tf }
 659 test_struct_calls 2
 660 test_struct_returns 2
 661
 662 # Approx size: (4+4)+8=16, 32, ...
 663 # d10v: 4+4=8, 12, ...
 664 start_structs_test { tf td }
 665 test_struct_calls 2
 666 test_struct_returns 2
 667
 668 return 0