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_start
  85     gdb_reinitialize_dir $srcdir/$subdir
  86     gdb_load ${binfile}
  87
  88     # Make certain that the output is consistent
  89     gdb_test "set print sevenbit-strings" "" \
  90             "set print sevenbit-strings; ${testfile}"
  91     gdb_test "set print address off" "" \
  92             "set print address off; ${testfile}"
  93     gdb_test "set width 0" "" \
  94             "set width 0; ${testfile}"
  95
  96     # Advance to main
  97     if { ![runto_main] } then {
  98         gdb_suppress_tests;
  99     }
 100
 101     # Get the debug format
 102     get_debug_format
 103
 104     # check that at the struct containing all the relevant types is correct
 105     set foo_t "type = struct struct[llength ${types}] \{"
 106     for {set n 0} {$n<[llength ${types}]} {incr n} {
 107         append foo_t "\[\r\n \]+[lindex ${types} $n] [i2a $n];"
 108     }
 109     append foo_t "\[\r\n \]+\}"
 110     gdb_test "ptype foo[llength ${types}]" "${foo_t}" \
 111             "ptype foo[llength ${types}]; ${testfile}"
 112 }
 113
 114 # The expected value for fun${n}, L${n} and foo${n}.  First element is
 115 # empty to make indexing easier.  "foo" returns the modified value,
 116 # "zed" returns the invalid value.
 117
 118 proc foo { n } {
 119     return [lindex {
 120         "{}"
 121         "{a = 49 '1'}"
 122         "{a = 97 'a', b = 50 '2'}"
 123         "{a = 49 '1', b = 98 'b', c = 51 '3'}"
 124         "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4'}"
 125         "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5'}"
 126         "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6'}"
 127         "{a = 49 '1', b = 98 'b', c = 51 '3', d = 100 'd', e = 53 '5', f = 102 'f', g = 55 '7'}"
 128         "{a = 97 'a', b = 50 '2', c = 99 'c', d = 52 '4', e = 101 'e', f = 54 '6', g = 103 'g', h = 56 '8'}"
 129         "{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'}"
 130         "{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'}"
 131         "{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'}"
 132         "{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'}"
 133         "{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'}"
 134         "{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'}"
 135         "{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'}"
 136         "{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'}"
 137         "{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'}"
 138     } $n]
 139 }
 140
 141 proc zed { n } {
 142     return [lindex {
 143         "{}"
 144         "{a = 90 'Z'}"
 145         "{a = 90 'Z', b = 90 'Z'}"
 146         "{a = 90 'Z', b = 90 'Z', c = 90 'Z'}"
 147         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z'}"
 148         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z'}"
 149         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z'}"
 150         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z'}"
 151         "{a = 90 'Z', b = 90 'Z', c = 90 'Z', d = 90 'Z', e = 90 'Z', f = 90 'Z', g = 90 'Z', h = 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', i = 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', j = 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', k = 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', l = 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', m = 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', n = 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', o = 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', p = 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', q = 90 'Z'}"
 161     } $n]
 162 }
 163
 164 # Given N (0..25), return the corresponding alphabetic letter in lower
 165 # or upper case.  This is ment to be i18n proof.
 166
 167 proc i2a { n } {
 168     return [string range "abcdefghijklmnopqrstuvwxyz" $n $n]
 169 }
 170
 171 proc I2A { n } {
 172     return [string toupper [i2a $n]]
 173 }
 174
 175
 176 # Use the file name, compiler and tuples to set up any needed KFAILs.
 177
 178 proc setup_kfails { file tuples bug } {
 179     global testfile
 180     if [string match $file $testfile] {
 181         foreach f $tuples { setup_kfail $f $bug }
 182     }
 183 }
 184
 185 proc setup_compiler_kfails { file compiler format tuples bug } {
 186     global testfile
 187     if {[string match $file $testfile] && [test_compiler_info $compiler]  && [test_debug_format $format]} {
 188         foreach f $tuples { setup_kfail $f $bug }
 189     }
 190 }
 191
 192 # Test GDB's ability to make inferior function calls to functions
 193 # returning (or passing in a single structs.
 194
 195 # N identifies the number of elements in the struct that will be used
 196 # for the test case.  FAILS is a list of target tuples that will fail
 197 # this test.
 198
 199 #  start_structs_test() will have previously built a program with a
 200 # specified combination of types for those elements.  To ensure
 201 # robustness of the output, "p/c" is used.
 202
 203 # This tests the code paths "which return-value convention?" and
 204 # "extract return-value from registers" called by "infcall.c".
 205
 206 proc test_struct_calls { n } {
 207     global testfile
 208     global gdb_prompt
 209
 210     # Check that GDB can always extract a struct-return value from an
 211     # inferior function call.  Since GDB always knows the location of an
 212     # inferior function call's return value these should never fail
 213
 214     # Implemented by calling the parameterless function "fun$N" and then
 215     # examining the return value printed by GDB.
 216
 217     set tests "call $n ${testfile}"
 218
 219     # Call fun${n}, checking the printed return-value.
 220     setup_kfails structs-*tld* i686-*-* gdb/1447
 221     setup_compiler_kfails structs-tc-* gcc-3-3 "DWARF 2" i686-*-* gdb/1455
 222     gdb_test "p/c fun${n}()"  "[foo ${n}]" "p/c fun<n>(); ${tests}"
 223
 224     # Check that GDB can always pass a structure to an inferior function.
 225     # This test can never fail.
 226
 227     # Implemented by calling the one parameter function "Fun$N" which
 228     # stores its parameter in the global variable "L$N".  GDB then
 229     # examining that global to confirm that the value is as expected.
 230
 231     gdb_test "call Fun${n}(foo${n})" "" "call Fun<n>(foo<n>); ${tests}"
 232     setup_kfails structs-*tld* i686-*-* gdb/1447
 233     setup_compiler_kfails structs-tc-* gcc-3-3 "DWARF 2" i686-*-* gdb/1455
 234     gdb_test "p/c L${n}" [foo ${n}] "p/c L<n>; ${tests}"
 235 }
 236
 237 # Test GDB's ability to both return a function (with "return" or
 238 # "finish") and correctly extract/store any corresponding
 239 # return-value.
 240
 241 # Check that GDB can consistently extract/store structure return
 242 # values.  There are two cases - returned in registers and returned in
 243 # memory.  For the latter case, the return value can't be found and a
 244 # failure is "expected".  However GDB must still both return the
 245 # function and display the final source and line information.
 246
 247 # N identifies the number of elements in the struct that will be used
 248 # for the test case.  FAILS is a list of target tuples that will fail
 249 # this test.
 250
 251 # This tests the code paths "which return-value convention?", "extract
 252 # return-value from registers", and "store return-value in registers".
 253 # Unlike "test struct calls", this test is expected to "fail" when the
 254 # return-value is in memory (GDB can't find the location).  The test
 255 # is in three parts: test "return"; test "finish"; check that the two
 256 # are consistent.  GDB can sometimes work for one command and not the
 257 # other.
 258
 259 proc test_struct_returns { n } {
 260     global gdb_prompt
 261     global testfile
 262
 263     set tests "return $n ${testfile}"
 264
 265
 266     # Check that "return" works.
 267
 268     # GDB must always force the return of a function that has
 269     # a struct result.  Dependant on the ABI, it may, or may not be
 270     # possible to store the return value in a register.
 271
 272     # The relevant code looks like "L{n} = fun{n}()".  The test forces
 273     # "fun{n}" to "return" with an explicit value.  Since that code
 274     # snippet will store the the returned value in "L{n}" the return
 275     # is tested by examining "L{n}".  This assumes that the
 276     # compiler implemented this as fun{n}(&L{n}) and hence that when
 277     # the value isn't stored "L{n}" remains unchanged.  Also check for
 278     # consistency between this and the "finish" case.
 279
 280     # Get into a call of fun${n}
 281     gdb_test "advance fun${n}" \
 282             "fun${n} .*\[\r\n\]+\[0-9\].*return foo${n}.*" \
 283             "advance to fun<n> for return; ${tests}"
 284
 285     # Check that the program invalidated the relevant global.
 286     setup_kfails structs-tld i686-*-* gdb/1447
 287     gdb_test "p/c L${n}" " = [zed $n]" "zed L<n> for return; ${tests} .${testfile}."
 288
 289     # Force the "return".  This checks that the return is always
 290     # performed, and that GDB correctly reported this to the user.
 291     # GDB 6.0 and earlier, when the return-value's location wasn't
 292     # known, both failed to print a final "source and line" and misplaced
 293     # the frame ("No frame").
 294
 295     # The test is writen so that it only reports one FAIL/PASS for the
 296     # entire operation.  The value returned is checked further down.
 297     # "return_value_unknown", if non-empty, records why GDB realised
 298     # that it didn't know where the return value was.
 299
 300     set test "return foo<n>; ${tests}"
 301     set return_value_unknown 0
 302     gdb_test_multiple "return foo${n}" "${test}" {
 303         -re "The location" {
 304             # Ulgh, a struct return, remember this (still need prompt).
 305             set return_value_unknown 1
 306             exp_continue
 307         }
 308         -re "A structure or union" {
 309             # Ulgh, a struct return, remember this (still need prompt).
 310             # Set it to something unique so that it won't match a
 311             # struct return convention value.
 312             # set return_value_unknown -1
 313             set return_value_unknown 1
 314             exp_continue
 315         }
 316         -re "Make fun${n} return now.*y or n. $" {
 317             gdb_test_multiple "y" "${test}" {
 318                 -re "L${n} *= fun${n}.*${gdb_prompt} $" {
 319                     # Need to step off the function call
 320                     gdb_test "next" "L.* *= fun.*" "${test}"
 321                 }
 322                 -re "L[expr ${n} + 1] *= fun[expr ${n} + 1].*${gdb_prompt} $" {
 323                     pass "${test}"
 324                 }
 325             }
 326         }
 327     }
 328
 329     # Check that the return-value is as expected.  At this stage we're
 330     # just checking that GDB has returned a value consistent with
 331     # "return_value_unknown" set above.
 332
 333     set test "value foo<n> returned; ${tests}"
 334     setup_kfails structs-*tld* i686-*-* gdb/1447
 335     gdb_test_multiple "p/c L${n}" "${test}" {
 336         -re " = [foo ${n}].*${gdb_prompt} $" {
 337             if $return_value_unknown {
 338                 # This contradicts the above claim that GDB didn't
 339                 # know the location of the return-value.
 340                 fail "${test}"
 341             } else {
 342                 pass "${test}"
 343             }
 344         }
 345         -re " = [zed ${n}].*${gdb_prompt} $" {
 346             if $return_value_unknown {
 347                 # The struct return case.  Since any modification
 348                 # would be by reference, and that can't happen, the
 349                 # value should be unmodified and hence Z is expected.
 350                 # Is this a reasonable assumption?
 351                 pass "${test}"
 352             } else {
 353                 # This contradicts the above claim that GDB knew
 354                 # the location of the return-value.
 355                 fail "${test}"
 356             }
 357         }
 358     }
 359
 360     # Check that a "finish" works.
 361
 362     # This is almost but not quite the same as "call struct funcs".
 363     # Architectures can have subtle differences in the two code paths.
 364
 365     # The relevant code snippet is "L{n} = fun{n}()".  The program is
 366     # advanced into a call to  "fun{n}" and then that function is
 367     # finished.  The returned value that GDB prints, reformatted using
 368     # "p/c", is checked.
 369
 370     # Get into "fun${n}()".
 371     gdb_test "advance fun${n}" \
 372             "fun${n} .*\[\r\n\]+\[0-9\].*return foo${n}.*" \
 373             "advance to fun<n> for finish; ${tests}"
 374
 375     # Check that the program invalidated the relevant global.
 376     setup_kfails structs-tld i686-*-* gdb/1447
 377     gdb_test "p/c L${n}" " = [zed $n]" "zed L<n> for finish; ${tests}"
 378
 379     # Finish the function, set 'finish_value_unknown" to non-empty if the
 380     # return-value was not found.
 381     set test "finish foo<n>; ${tests}"
 382     set finish_value_unknown 0
 383     gdb_test_multiple "finish" "${test}" {
 384         -re "Value returned is .*${gdb_prompt} $" {
 385             pass "${test}"
 386         }
 387         -re "Cannot determine contents.*${gdb_prompt} $" {
 388             # Expected bad value.  For the moment this is ok.
 389             set finish_value_unknown 1
 390             pass "${test}"
 391         }
 392     }
 393
 394     # Re-print the last (return-value) using the more robust
 395     # "p/c".  If no return value was found, the 'Z' from the previous
 396     # check that the variable was cleared, is printed.
 397     set test "value foo<n> finished; ${tests}"
 398     setup_kfails structs-*tld* i686-*-* gdb/1447
 399     gdb_test_multiple "p/c" "${test}" {
 400         -re "[foo ${n}]\[\r\n\]+${gdb_prompt} $" {
 401             if $finish_value_unknown {
 402                 # This contradicts the above claim that GDB didn't
 403                 # know the location of the return-value.
 404                 fail "${test}"
 405             } else {
 406                 pass "${test}"
 407             }
 408         }
 409         -re "[zed ${n}]\[\r\n\]+${gdb_prompt} $" {
 410             # The value didn't get found.  This is "expected".
 411             if $finish_value_unknown {
 412                 pass "${test}"
 413             } else {
 414                 # This contradicts the above claim that GDB did
 415                 # know the location of the return-value.
 416                 fail "${test}"
 417             }
 418         }
 419     }
 420
 421     # Finally, check that "return" and finish" have consistent
 422     # behavior.
 423
 424     # Since both "return" and "finish" use equivalent "which
 425     # return-value convention" logic, both commands should have
 426     # identical can/can-not find return-value messages.
 427
 428     # Note that since "call" and "finish" use common code paths, a
 429     # failure here is a strong indicator of problems with "store
 430     # return-value" code paths.  Suggest looking at "return_value"
 431     # when investigating a fix.
 432
 433     set test "return and finish use same convention; ${tests}"
 434     if {$finish_value_unknown == $return_value_unknown} {
 435         pass "${test}"
 436     } else {
 437         kfail gdb/1444 "${test}"
 438     }
 439 }
 440
 441 # ABIs pass anything >8 or >16 bytes in memory but below that things
 442 # randomly use register and/and structure conventions.  Check all
 443 # possible sized char structs in that range.  But only a restricted
 444 # range of the other types.
 445
 446 # NetBSD/PPC returns "unnatural" (3, 5, 6, 7) sized structs in memory.
 447
 448 # d10v is weird. 5/6 byte structs go in memory.  2 or more char
 449 # structs go in memory.  Everything else is in a register!
 450
 451 # Test every single char struct from 1..17 in size.  This is what the
 452 # original "structs" test was doing.
 453
 454 start_structs_test { tc }
 455 test_struct_calls 1
 456 test_struct_calls 2
 457 test_struct_calls 3
 458 test_struct_calls 4
 459 test_struct_calls 5
 460 test_struct_calls 6
 461 test_struct_calls 7
 462 test_struct_calls 8
 463 test_struct_calls 9
 464 test_struct_calls 10
 465 test_struct_calls 11
 466 test_struct_calls 12
 467 test_struct_calls 13
 468 test_struct_calls 14
 469 test_struct_calls 15
 470 test_struct_calls 16
 471 test_struct_calls 17
 472 test_struct_returns 1
 473 test_struct_returns 2
 474 test_struct_returns 3
 475 test_struct_returns 4
 476 test_struct_returns 5
 477 test_struct_returns 6
 478 test_struct_returns 7
 479 test_struct_returns 8
 480
 481
 482 # Let the fun begin.
 483
 484 # Assuming that any integer struct larger than 8 bytes goes in memory,
 485 # come up with many and varied combinations of a return struct.  For
 486 # "struct calls" test just beyond that 8 byte boundary, for "struct
 487 # returns" test up to that boundary.
 488
 489 # For floats, assumed that up to two struct elements can be stored in
 490 # floating point registers, regardless of their size.
 491
 492 # The approx size of each structure it is computed assumed that tc=1,
 493 # ts=2, ti=4, tl=4, tll=8, tf=4, td=8, tld=16, and that all fields are
 494 # naturally aligned.  Padding being added where needed.  Note that
 495 # these numbers are just approx, the d10v has ti=2, a 64-bit has has
 496 # tl=8.
 497
 498 # Approx size: 2, 4, ...
 499 start_structs_test { ts }
 500 test_struct_calls 1
 501 test_struct_calls 2
 502 test_struct_calls 3
 503 test_struct_calls 4
 504 test_struct_calls 5
 505 test_struct_returns 1
 506 test_struct_returns 2
 507 test_struct_returns 3
 508 test_struct_returns 4
 509
 510 # Approx size: 4, 8, ...
 511 start_structs_test { ti }
 512 test_struct_calls 1
 513 test_struct_calls 2
 514 test_struct_calls 3
 515 test_struct_returns 1
 516 test_struct_returns 2
 517
 518 # Approx size: 4, 8, ...
 519 start_structs_test { tl }
 520 test_struct_calls 1
 521 test_struct_calls 2
 522 test_struct_calls 3
 523 test_struct_returns 1
 524 test_struct_returns 2
 525
 526 # Approx size: 8, 16, ...
 527 start_structs_test { tll }
 528 test_struct_calls 1
 529 test_struct_calls 2
 530 test_struct_returns 1
 531
 532 # Approx size: 4, 8, ...
 533 start_structs_test { tf }
 534 test_struct_calls 1
 535 test_struct_calls 2
 536 test_struct_calls 3
 537 test_struct_returns 1
 538 test_struct_returns 2
 539
 540 # Approx size: 8, 16, ...
 541 start_structs_test { td }
 542 test_struct_calls 1
 543 test_struct_calls 2
 544 test_struct_returns 1
 545
 546 # Approx size: 16, 32, ...
 547 start_structs_test { tld }
 548 test_struct_calls 1
 549 test_struct_calls 2
 550 test_struct_returns 1
 551
 552 # Approx size: 2+1=3, 4, ...
 553 start_structs_test { ts tc }
 554 test_struct_calls 2
 555 test_struct_calls 3
 556 test_struct_calls 4
 557 test_struct_calls 5
 558 test_struct_calls 6
 559 test_struct_calls 7
 560 test_struct_calls 8
 561 test_struct_returns 2
 562
 563 # Approx size: 4+1=5, 6, ...
 564 start_structs_test { ti 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_returns 2
 571
 572 # Approx size: 4+1=5, 6, ...
 573 start_structs_test { tl tc }
 574 test_struct_calls 2
 575 test_struct_calls 3
 576 test_struct_calls 4
 577 test_struct_calls 5
 578 test_struct_calls 6
 579 test_struct_returns 2
 580
 581 # Approx size: 8+1=9, 10, ...
 582 start_structs_test { tll tc }
 583 test_struct_calls 2
 584
 585 # Approx size: 4+1=5, 6, ...
 586 start_structs_test { tf tc }
 587 test_struct_calls 2
 588 test_struct_calls 3
 589 test_struct_calls 4
 590 test_struct_calls 5
 591 test_struct_calls 6
 592 test_struct_returns 2
 593
 594 # Approx size: 8+1=9, 10, ...
 595 start_structs_test { td tc }
 596 test_struct_calls 2
 597
 598 # Approx size: 16+1=17, 18, ...
 599 start_structs_test { tld tc }
 600 test_struct_calls 2
 601
 602 # Approx size: (1+1)+2=4, 6, ...
 603 start_structs_test { tc ts }
 604 test_struct_calls 2
 605 test_struct_calls 3
 606 test_struct_calls 4
 607 test_struct_calls 5
 608 test_struct_calls 6
 609 test_struct_returns 2
 610
 611 # Approx size: (1+3)+4=8, 12, ...
 612 start_structs_test { tc ti }
 613 test_struct_calls 2
 614 test_struct_calls 3
 615 test_struct_calls 4
 616 test_struct_returns 2
 617
 618 # Approx size: (1+3)+4=8, 12, ...
 619 start_structs_test { tc tl }
 620 test_struct_calls 2
 621 test_struct_calls 3
 622 test_struct_calls 4
 623 test_struct_returns 2
 624
 625 # Approx size: (1+7)+8=16, 24, ...
 626 start_structs_test { tc tll }
 627 test_struct_calls 2
 628
 629 # Approx size: (1+3)+4=8, 12, ...
 630 start_structs_test { tc tf }
 631 test_struct_calls 2
 632 test_struct_calls 3
 633 test_struct_calls 4
 634
 635 # Approx size: (1+7)+8=16, 24, ...
 636 start_structs_test { tc td }
 637 test_struct_calls 2
 638
 639 # Approx size: (1+15)+16=32, 48, ...
 640 start_structs_test { tc tld }
 641 test_struct_calls 2
 642
 643 # Some float combinations
 644
 645 # Approx size: 8+4=12, 16, ...
 646 # d10v: 4+4=8, 12, ...
 647 start_structs_test { td tf }
 648 test_struct_calls 2
 649 test_struct_returns 2
 650
 651 # Approx size: (4+4)+8=16, 32, ...
 652 # d10v: 4+4=8, 12, ...
 653 start_structs_test { tf td }
 654 test_struct_calls 2
 655 test_struct_returns 2
 656
 657 return 0