gdb/testsuite/gdb.base/callfuncs.exp

   1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2 # 2004, 2007, 2008 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 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@prep.ai.mit.edu
  19
  20 # This file was written by Fred Fish. (fnf@cygnus.com)
  21 # and modified by Bob Manson. (manson@cygnus.com)
  22
  23 if $tracelevel then {
  24         strace $tracelevel
  25 }
  26
  27 set prms_id 0
  28 set bug_id 0
  29
  30 set testfile "callfuncs"
  31 set srcfile ${testfile}.c
  32 set binfile ${objdir}/${subdir}/${testfile}
  33
  34 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  35      untested callfuncs.exp
  36      return -1
  37 }
  38
  39 # Create and source the file that provides information about the compiler
  40 # used to compile the test case.
  41
  42 if [get_compiler_info ${binfile}] {
  43     return -1;
  44 }
  45
  46 if {$hp_aCC_compiler} {
  47     set prototypes 1
  48 } else {
  49     set prototypes 0
  50 }
  51
  52 # Some targets can't do function calls, so don't even bother with this
  53 # test.
  54 if [target_info exists gdb,cannot_call_functions] {
  55     setup_xfail "*-*-*" 2416
  56     fail "This target can not call functions"
  57     continue
  58 }
  59
  60 # Set the current language to C.  This counts as a test.  If it
  61 # fails, then we skip the other tests.
  62
  63 proc set_lang_c {} {
  64     global gdb_prompt
  65
  66     send_gdb "set language c\n"
  67     gdb_expect {
  68         -re ".*$gdb_prompt $" {}
  69         timeout { fail "set language c (timeout)" ; return 0; }
  70     }
  71
  72     send_gdb "show language\n"
  73     gdb_expect {
  74         -re ".* source language is \"c\".*$gdb_prompt $" {
  75             pass "set language to \"c\""
  76             return 1
  77         }
  78         -re ".*$gdb_prompt $" {
  79             fail "setting language to \"c\""
  80             return 0
  81         }
  82         timeout {
  83             fail "can't show language (timeout)"
  84             return 0
  85         }
  86     }
  87 }
  88
  89 # FIXME:  Before calling this proc, we should probably verify that
  90 # we can call inferior functions and get a valid integral value
  91 # returned.
  92 # Note that it is OK to check for 0 or 1 as the returned values, because C
  93 # specifies that the numeric value of a relational or logical expression
  94 # (computed in the inferior) is 1 for true and 0 for false.
  95
  96 proc do_function_calls {} {
  97     global prototypes
  98     global gdb_prompt
  99
 100     # We need to up this because this can be really slow on some boards.
 101     set timeout 60;
 102
 103     gdb_test "p t_char_values(0,0)" " = 0"
 104     gdb_test "p t_char_values('a','b')" " = 1"
 105     gdb_test "p t_char_values(char_val1,char_val2)" " = 1"
 106     gdb_test "p t_char_values('a',char_val2)" " = 1"
 107     gdb_test "p t_char_values(char_val1,'b')" " = 1"
 108
 109     gdb_test "p t_short_values(0,0)" " = 0"
 110     gdb_test "p t_short_values(10,-23)" " = 1"
 111     gdb_test "p t_short_values(short_val1,short_val2)" " = 1"
 112     gdb_test "p t_short_values(10,short_val2)" " = 1"
 113     gdb_test "p t_short_values(short_val1,-23)" " = 1"
 114
 115     gdb_test "p t_int_values(0,0)" " = 0"
 116     gdb_test "p t_int_values(87,-26)" " = 1"
 117     gdb_test "p t_int_values(int_val1,int_val2)" " = 1"
 118     gdb_test "p t_int_values(87,int_val2)" " = 1"
 119     gdb_test "p t_int_values(int_val1,-26)" " = 1"
 120
 121     gdb_test "p t_long_values(0,0)" " = 0"
 122     gdb_test "p t_long_values(789,-321)" " = 1"
 123     gdb_test "p t_long_values(long_val1,long_val2)" " = 1"
 124     gdb_test "p t_long_values(789,long_val2)" " = 1"
 125     gdb_test "p t_long_values(long_val1,-321)" " = 1"
 126
 127     if ![target_info exists gdb,skip_float_tests] {
 128         gdb_test "p t_float_values(0.0,0.0)" " = 0"
 129
 130         # These next four tests fail on the mn10300.
 131         # The first value is passed in regs, the other in memory.
 132         # Gcc emits different stabs for the two parameters; the first is
 133         # claimed to be a float, the second a double.
 134         # dbxout.c in gcc claims this is the desired behavior.
 135         setup_xfail "mn10300-*-*"
 136         gdb_test "p t_float_values(3.14159,-2.3765)" " = 1"
 137         setup_xfail "mn10300-*-*"
 138         gdb_test "p t_float_values(float_val1,float_val2)" " = 1"
 139         setup_xfail "mn10300-*-*"
 140         gdb_test "p t_float_values(3.14159,float_val2)" " = 1"
 141         setup_xfail "mn10300-*-*"
 142         gdb_test "p t_float_values(float_val1,-2.3765)" " = 1"
 143
 144         # Test passing of arguments which might not be widened.
 145         gdb_test "p t_float_values2(0.0,0.0)" " = 0"
 146
 147         # Although PR 5318 mentions SunOS specifically, this seems
 148         # to be a generic problem on quite a few platforms.
 149         if $prototypes then {
 150             setup_xfail "sparc-*-*" "mips*-*-*" 5318
 151             if { ! [test_compiler_info gcc-*-*] } then {
 152                 setup_xfail "alpha-dec-osf2*" "i*86-*-sysv4*" 5318
 153             }
 154         }
 155
 156         gdb_test "p t_float_values2(3.14159,float_val2)" " = 1"
 157
 158         gdb_test "p t_float_many_args (float_val1, float_val2, float_val3, float_val4, float_val5, float_val6, float_val7, float_val8, float_val9, float_val10, float_val11, float_val12, float_val13, float_val14, float_val15)" " = 1" "Call function with many float arguments."
 159
 160         gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
 161
 162         gdb_test "p t_double_values(0.0,0.0)" " = 0"
 163         gdb_test "p t_double_values(45.654,-67.66)" " = 1"
 164         gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
 165         gdb_test "p t_double_values(45.654,double_val2)" " = 1"
 166         gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
 167
 168         gdb_test "p t_double_many_args (double_val1, double_val2, double_val3, double_val4, double_val5, double_val6, double_val7, double_val8, double_val9, double_val10, double_val11, double_val12, double_val13, double_val14, double_val15)" " = 1" "Call function with many double arguments."
 169
 170         gdb_test "p t_double_int(99.0, 1)" " = 0"
 171         gdb_test "p t_double_int(99.0, 99)" " = 1"
 172         gdb_test "p t_int_double(99, 1.0)" " = 0"
 173         gdb_test "p t_int_double(99, 99.0)" " = 1"
 174     }
 175
 176     gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
 177     gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
 178     gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
 179     gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
 180     gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
 181
 182     gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
 183     gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
 184     gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
 185     gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
 186     gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
 187
 188     gdb_test "p doubleit(4)" " = 8"
 189     gdb_test "p add(4,5)" " = 9"
 190     gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
 191     gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
 192
 193     gdb_test "p function_struct.func(5)" " = 10"
 194     gdb_test "p function_struct_ptr->func(10)" " = 20"
 195
 196     # GDB currently screws up the passing of function parameters for
 197     # ABIs that use function descriptors.  Instead of passing the
 198     # address of te function descriptor, GDB passes the address of the
 199     # function body.  This results in the called function treating the
 200     # first few instructions of the function proper as a descriptor
 201     # and attempting a jump through that (a totally random address).
 202     setup_kfail "rs6000*-*-aix*" gdb/1457
 203     setup_kfail "powerpc*-*-aix*" gdb/1457
 204     setup_kfail hppa*-*-hpux* gdb/1457
 205     gdb_test "p t_func_values(add,func_val2)" " = 1"
 206     setup_kfail "rs6000*-*-aix*" gdb/1457
 207     setup_kfail "powerpc*-*-aix*" gdb/1457
 208     setup_kfail hppa*-*-hpux* gdb/1457
 209     gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
 210     setup_kfail "rs6000*-*-aix*" gdb/1457
 211     setup_kfail "powerpc*-*-aix*" gdb/1457
 212     setup_kfail hppa*-*-hpux* gdb/1457
 213     gdb_test "p t_call_add(add,3,4)" " = 7"
 214     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 215
 216     gdb_test "p t_enum_value1(enumval1)" " = 1"
 217     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 218     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 219
 220     gdb_test "p t_enum_value2(enumval2)" " = 1"
 221     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 222     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 223
 224     gdb_test "p sum_args(1,{2})" " = 2"
 225     gdb_test "p sum_args(2,{2,3})" " = 5"
 226     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 227     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 228
 229     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 230
 231     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 232
 233     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 234         "call inferior func with struct - returns char"
 235     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 236         "call inferior func with struct - returns short"
 237     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 238         "call inferior func with struct - returns int"
 239     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 240         "call inferior func with struct - returns long"
 241     gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 242         "call inferior func with struct - returns float"
 243     gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 244         "call inferior func with struct - returns double"
 245     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 246         "call inferior func with struct - returns char *"
 247 }
 248
 249 # Procedure to get current content of all registers.
 250 proc fetch_all_registers {test} {
 251     global gdb_prompt
 252
 253     set all_registers_lines {}
 254     set bad -1
 255     if {[gdb_test_multiple "info all-registers" $test {
 256         -re "info all-registers\[\r\n\]+" {
 257             exp_continue
 258         }
 259         -ex "The program has no registers now" {
 260             set bad 1
 261             exp_continue
 262         }
 263         -re "^bspstore\[ \t\]+\[^\r\n\]+\[\r\n\]+" {
 264             if [istarget "ia64-*-*"] {
 265                 # Filter out bspstore which is specially tied to bsp,
 266                 # giving spurious differences.
 267             } else {
 268                 lappend all_registers_lines $expect_out(0,string)
 269             }
 270             exp_continue
 271         }
 272         -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\[\r\n\]+" {
 273             lappend all_registers_lines $expect_out(0,string)
 274             exp_continue
 275         }
 276         -re ".*$gdb_prompt $" {
 277             incr bad
 278         }
 279         -re "^\[^\r\n\]+\[\r\n\]+" {
 280             if {!$bad} {
 281                 warning "Unrecognized output: $expect_out(0,string)"
 282                 set bad 1
 283             }
 284             exp_continue
 285         }
 286     }] != 0} {
 287         return {}
 288     }
 289
 290     if {$bad} {
 291         fail $test
 292         return {}
 293     }
 294
 295     pass $test
 296     return $all_registers_lines
 297 }
 298
 299
 300 # Start with a fresh gdb.
 301
 302 gdb_exit
 303 gdb_start
 304 gdb_reinitialize_dir $srcdir/$subdir
 305 gdb_load ${binfile}
 306
 307 gdb_test "set print sevenbit-strings" ""
 308 gdb_test "set print address off" ""
 309 gdb_test "set width 0" ""
 310
 311 if { $hp_aCC_compiler } {
 312     # Do not set language explicitly to 'C'.  This will cause aCC
 313     # tests to fail because promotion rules are different.  Just let
 314     # the language be set to the default.
 315
 316     if { ![runto_main] } {
 317         gdb_suppress_tests;
 318     }
 319
 320     # However, turn off overload-resolution for aCC.  Having it on causes
 321     # a lot of failures.
 322
 323     gdb_test "set overload-resolution 0" ".*"
 324 } else {
 325     if { ![set_lang_c] } {
 326         gdb_suppress_tests;
 327     } else {
 328         if { ![runto_main] } {
 329             gdb_suppress_tests;
 330         }
 331     }
 332 }
 333
 334 get_debug_format
 335
 336 # Make sure that malloc gets called and that the floating point unit
 337 # is initialized via a call to t_double_values.
 338 gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \
 339   "next to t_double_values"
 340 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
 341   "next to t_structs_c"
 342
 343 # Save all register contents.
 344 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 345
 346 # Perform function calls.
 347 do_function_calls
 348
 349 # Check if all registers still have the same value.
 350 set new_reg_content [fetch_all_registers \
 351                      "register contents after gdb function calls"]
 352 if {$old_reg_content == $new_reg_content} then {
 353     pass "gdb function calls preserve register contents"
 354 } else {
 355     set old_reg_content $new_reg_content
 356     fail "gdb function calls preserve register contents"
 357 }
 358
 359 # Set breakpoint at a function we will call from gdb.
 360 gdb_breakpoint add
 361
 362 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
 363 # make sure we are back at main and still have the same register contents.
 364 gdb_test "print add(4,5)" \
 365         "The program being debugged stopped while.*" \
 366         "stop at breakpoint in call dummy function"
 367 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 368 if ![gdb_test "bt 2" \
 369               "#0  main.*" \
 370               "bt after continuing from call dummy breakpoint"] then {
 371     set new_reg_content [fetch_all_registers \
 372                          "register contents after stop in call dummy"]
 373     if {$old_reg_content == $new_reg_content} then {
 374         pass "continue after stop in call dummy preserves register contents"
 375     } else {
 376         fail "continue after stop in call dummy preserves register contents"
 377     }
 378 }
 379
 380 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 381 # make sure we are back at main and still have the same register contents.
 382 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 383         "call function causing a breakpoint then do a finish"
 384 gdb_test "finish" \
 385          "Value returned is .* = 9" \
 386          "finish from call dummy breakpoint returns correct value"
 387 if ![gdb_test "bt 2" \
 388               "#0  main.*" \
 389               "bt after finishing from call dummy breakpoint"] then {
 390     set new_reg_content [fetch_all_registers \
 391                          "register contents after finish in call dummy"]
 392     if {$old_reg_content == $new_reg_content} then {
 393         pass "finish after stop in call dummy preserves register contents"
 394     } else {
 395         fail "finish after stop in call dummy preserves register contents"
 396     }
 397 }
 398
 399 # Call function (causing a breakpoint hit in the call dummy) and do a return
 400 # with a value, make sure we are back at main with the same register contents.
 401 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 402         "call function causing a breakpoint and then do a return"
 403 if ![gdb_test "return 7" \
 404               "#0  main.*" \
 405               "back at main after return from call dummy breakpoint" \
 406               "Make add return now. .y or n.*" \
 407               "y"] then {
 408     set new_reg_content [fetch_all_registers \
 409                          "register contents after return in call dummy"]
 410     if {$old_reg_content == $new_reg_content} then {
 411         pass "return after stop in call dummy preserves register contents"
 412     } else {
 413         fail "return after stop in call dummy preserves register contents"
 414     }
 415 }
 416
 417 # Call function (causing a breakpoint hit in the call dummy), and
 418 # call another function from the call dummy frame (thereby setting up
 419 # several nested call dummy frames).  Test that backtrace and finish
 420 # work when several call dummies are nested.
 421 gdb_breakpoint sum10
 422 gdb_breakpoint t_small_values
 423 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
 424         "stop at nested call level 1"
 425 gdb_test "backtrace" \
 426         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 427         "backtrace at nested call level 1"
 428 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 429         "stop at nested call level 2"
 430 gdb_test "backtrace" \
 431         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 432         "backtrace at nested call level 2"
 433 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
 434         "The program being debugged stopped while.*" \
 435         "stop at nested call level 3"
 436 gdb_test "backtrace" \
 437         "\#0  sum10 \\(i0=2, i1=4, i2=6, i3=8, i4=10, i5=12, i6=14, i7=16, i8=18, i9=20\\).*\#1  <function called from gdb>.*\#2  add \\(a=4, b=5\\).*\#3  <function called from gdb>.*\#4  add \\(a=2, b=3\\).*\#5  <function called from gdb>.*\#6  main.*" \
 438         "backtrace at nested call level 3"
 439 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
 440         "The program being debugged stopped while.*" \
 441         "stop at nested call level 4"
 442 gdb_test "backtrace" \
 443         "\#0  t_small_values \\(arg1=1 '.001', arg2=3, arg3=5, arg4=7 '.a', arg5=9, arg6=11 '.v', arg7=13, arg8=15, arg9=17, arg10=19\\).*\#2  sum10 \\(i0=2, i1=4, i2=6, i3=8, i4=10, i5=12, i6=14, i7=16, i8=18, i9=20\\).*\#3  <function called from gdb>.*\#4  add \\(a=4, b=5\\).*\#5  <function called from gdb>.*\#6  add \\(a=2, b=3\\).*\#7  <function called from gdb>.*\#8  main.*" \
 444         "backtrace at nested call level 4"
 445 gdb_test "finish" "Value returned is .* = 100" \
 446         "Finish from nested call level 4"
 447 gdb_test "backtrace" \
 448         "\#0  sum10 \\(i0=2, i1=4, i2=6, i3=8, i4=10, i5=12, i6=14, i7=16, i8=18, i9=20\\).*\#1  <function called from gdb>.*\#2  add \\(a=4, b=5\\).*\#3  <function called from gdb>.*\#4  add \\(a=2, b=3\\).*\#5  <function called from gdb>.*\#6  main.*" \
 449         "backtrace after finish from nested call level 4"
 450 gdb_test "finish" "Value returned is .* = 110" \
 451         "Finish from nested call level 3"
 452 gdb_test "backtrace" \
 453         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 454         "backtrace after finish from nested call level 3"
 455 gdb_test "finish" "Value returned is .* = 9" \
 456         "Finish from nested call level 2"
 457 gdb_test "backtrace" \
 458         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 459         "backtrace after finish from nested call level 2"
 460 gdb_test "finish" "Value returned is .* = 5" \
 461         "Finish from nested call level 1"
 462 gdb_test "backtrace" "\#0  main .*" \
 463         "backtrace after finish from nested call level 1"
 464
 465 set new_reg_content [fetch_all_registers \
 466                      "register contents after nested call dummies"]
 467 if {$old_reg_content == $new_reg_content} then {
 468     pass "nested call dummies preserve register contents"
 469 } else {
 470     fail "nested call dummies preserve register contents"
 471 }
 472
 473 return 0
 474