gdb/testsuite/gdb.base/callfuncs.exp

   1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2 # 2004, 2007 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_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
 159
 160         gdb_test "p t_double_values(0.0,0.0)" " = 0"
 161         gdb_test "p t_double_values(45.654,-67.66)" " = 1"
 162         gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
 163         gdb_test "p t_double_values(45.654,double_val2)" " = 1"
 164         gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
 165
 166         gdb_test "p t_double_int(99.0, 1)" " = 0"
 167         gdb_test "p t_double_int(99.0, 99)" " = 1"
 168         gdb_test "p t_int_double(99, 1.0)" " = 0"
 169         gdb_test "p t_int_double(99, 99.0)" " = 1"
 170     }
 171
 172     gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
 173     gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
 174     gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
 175     gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
 176     gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
 177
 178     gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
 179     gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
 180     gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
 181     gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
 182     gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
 183
 184     gdb_test "p doubleit(4)" " = 8"
 185     gdb_test "p add(4,5)" " = 9"
 186     gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
 187     gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
 188
 189     # GDB currently screws up the passing of function parameters for
 190     # ABIs that use function descriptors.  Instead of passing the
 191     # address of te function descriptor, GDB passes the address of the
 192     # function body.  This results in the called function treating the
 193     # first few instructions of the function proper as a descriptor
 194     # and attempting a jump through that (a totally random address).
 195     setup_kfail "rs6000*-*-aix*" gdb/1457
 196     setup_kfail "powerpc*-*-aix*" gdb/1457
 197     setup_kfail hppa*-*-hpux* gdb/1457
 198     gdb_test "p t_func_values(add,func_val2)" " = 1"
 199     setup_kfail "rs6000*-*-aix*" gdb/1457
 200     setup_kfail "powerpc*-*-aix*" gdb/1457
 201     setup_kfail hppa*-*-hpux* gdb/1457
 202     gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
 203     setup_kfail "rs6000*-*-aix*" gdb/1457
 204     setup_kfail "powerpc*-*-aix*" gdb/1457
 205     setup_kfail hppa*-*-hpux* gdb/1457
 206     gdb_test "p t_call_add(add,3,4)" " = 7"
 207     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 208
 209     gdb_test "p t_enum_value1(enumval1)" " = 1"
 210     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 211     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 212
 213     gdb_test "p t_enum_value2(enumval2)" " = 1"
 214     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 215     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 216
 217     gdb_test "p sum_args(1,{2})" " = 2"
 218     gdb_test "p sum_args(2,{2,3})" " = 5"
 219     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 220     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 221
 222     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 223
 224     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 225
 226     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 227         "call inferior func with struct - returns char"
 228     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 229         "call inferior func with struct - returns short"
 230     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 231         "call inferior func with struct - returns int"
 232     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 233         "call inferior func with struct - returns long"
 234     gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 235         "call inferior func with struct - returns float"
 236     gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 237         "call inferior func with struct - returns double"
 238     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 239         "call inferior func with struct - returns char *"
 240 }
 241
 242 # Procedure to get current content of all registers.
 243 proc fetch_all_registers {test} {
 244     global gdb_prompt
 245
 246     set all_registers_lines {}
 247     set bad -1
 248     if {[gdb_test_multiple "info all-registers" $test {
 249         -re "info all-registers\[\r\n\]+" {
 250             exp_continue
 251         }
 252         -ex "The program has no registers now" {
 253             set bad 1
 254             exp_continue
 255         }
 256         -re "^bspstore\[ \t\]+\[^\r\n\]+\[\r\n\]+" {
 257             if [istarget "ia64-*-*"] {
 258                 # Filter out bspstore which is specially tied to bsp,
 259                 # giving spurious differences.
 260             } else {
 261                 lappend all_registers_lines $expect_out(0,string)
 262             }
 263             exp_continue
 264         }
 265         -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\[\r\n\]+" {
 266             lappend all_registers_lines $expect_out(0,string)
 267             exp_continue
 268         }
 269         -re ".*$gdb_prompt $" {
 270             incr bad
 271         }
 272         -re "^\[^\r\n\]+\[\r\n\]+" {
 273             if {!$bad} {
 274                 warning "Unrecognized output: $expect_out(0,string)"
 275                 set bad 1
 276             }
 277             exp_continue
 278         }
 279     }] != 0} {
 280         return {}
 281     }
 282
 283     if {$bad} {
 284         fail $test
 285         return {}
 286     }
 287
 288     pass $test
 289     return $all_registers_lines
 290 }
 291
 292
 293 # Start with a fresh gdb.
 294
 295 gdb_exit
 296 gdb_start
 297 gdb_reinitialize_dir $srcdir/$subdir
 298 gdb_load ${binfile}
 299
 300 gdb_test "set print sevenbit-strings" ""
 301 gdb_test "set print address off" ""
 302 gdb_test "set width 0" ""
 303
 304 if { $hp_aCC_compiler } {
 305     # Do not set language explicitly to 'C'.  This will cause aCC
 306     # tests to fail because promotion rules are different.  Just let
 307     # the language be set to the default.
 308
 309     if { ![runto_main] } {
 310         gdb_suppress_tests;
 311     }
 312
 313     # However, turn off overload-resolution for aCC.  Having it on causes
 314     # a lot of failures.
 315
 316     gdb_test "set overload-resolution 0" ".*"
 317 } else {
 318     if { ![set_lang_c] } {
 319         gdb_suppress_tests;
 320     } else {
 321         if { ![runto_main] } {
 322             gdb_suppress_tests;
 323         }
 324     }
 325 }
 326
 327 get_debug_format
 328
 329 # Make sure that malloc gets called and that the floating point unit
 330 # is initialized via a call to t_double_values.
 331 gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \
 332   "next to t_double_values"
 333 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
 334   "next to t_structs_c"
 335
 336 # Save all register contents.
 337 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 338
 339 # Perform function calls.
 340 do_function_calls
 341
 342 # Check if all registers still have the same value.
 343 set new_reg_content [fetch_all_registers \
 344                      "register contents after gdb function calls"]
 345 if {$old_reg_content == $new_reg_content} then {
 346     pass "gdb function calls preserve register contents"
 347 } else {
 348     set old_reg_content $new_reg_content
 349     fail "gdb function calls preserve register contents"
 350 }
 351
 352 # Set breakpoint at a function we will call from gdb.
 353 gdb_breakpoint add
 354
 355 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
 356 # make sure we are back at main and still have the same register contents.
 357 gdb_test "print add(4,5)" \
 358         "The program being debugged stopped while.*" \
 359         "stop at breakpoint in call dummy function"
 360 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 361 if ![gdb_test "bt 2" \
 362               "#0  main.*" \
 363               "bt after continuing from call dummy breakpoint"] then {
 364     set new_reg_content [fetch_all_registers \
 365                          "register contents after stop in call dummy"]
 366     if {$old_reg_content == $new_reg_content} then {
 367         pass "continue after stop in call dummy preserves register contents"
 368     } else {
 369         fail "continue after stop in call dummy preserves register contents"
 370     }
 371 }
 372
 373 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 374 # make sure we are back at main and still have the same register contents.
 375 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 376         "call function causing a breakpoint then do a finish"
 377 gdb_test "finish" \
 378          "Value returned is .* = 9" \
 379          "finish from call dummy breakpoint returns correct value"
 380 if ![gdb_test "bt 2" \
 381               "#0  main.*" \
 382               "bt after finishing from call dummy breakpoint"] then {
 383     set new_reg_content [fetch_all_registers \
 384                          "register contents after finish in call dummy"]
 385     if {$old_reg_content == $new_reg_content} then {
 386         pass "finish after stop in call dummy preserves register contents"
 387     } else {
 388         fail "finish after stop in call dummy preserves register contents"
 389     }
 390 }
 391
 392 # Call function (causing a breakpoint hit in the call dummy) and do a return
 393 # with a value, make sure we are back at main with the same register contents.
 394 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 395         "call function causing a breakpoint and then do a return"
 396 if ![gdb_test "return 7" \
 397               "#0  main.*" \
 398               "back at main after return from call dummy breakpoint" \
 399               "Make add return now. .y or n.*" \
 400               "y"] then {
 401     set new_reg_content [fetch_all_registers \
 402                          "register contents after return in call dummy"]
 403     if {$old_reg_content == $new_reg_content} then {
 404         pass "return after stop in call dummy preserves register contents"
 405     } else {
 406         fail "return after stop in call dummy preserves register contents"
 407     }
 408 }
 409
 410 # Call function (causing a breakpoint hit in the call dummy), and
 411 # call another function from the call dummy frame (thereby setting up
 412 # several nested call dummy frames).  Test that backtrace and finish
 413 # work when several call dummies are nested.
 414 gdb_breakpoint sum10
 415 gdb_breakpoint t_small_values
 416 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
 417         "stop at nested call level 1"
 418 gdb_test "backtrace" \
 419         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 420         "backtrace at nested call level 1"
 421 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 422         "stop at nested call level 2"
 423 gdb_test "backtrace" \
 424         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 425         "backtrace at nested call level 2"
 426 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
 427         "The program being debugged stopped while.*" \
 428         "stop at nested call level 3"
 429 gdb_test "backtrace" \
 430         "\#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.*" \
 431         "backtrace at nested call level 3"
 432 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
 433         "The program being debugged stopped while.*" \
 434         "stop at nested call level 4"
 435 gdb_test "backtrace" \
 436         "\#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.*" \
 437         "backtrace at nested call level 4"
 438 gdb_test "finish" "Value returned is .* = 100" \
 439         "Finish from nested call level 4"
 440 gdb_test "backtrace" \
 441         "\#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.*" \
 442         "backtrace after finish from nested call level 4"
 443 gdb_test "finish" "Value returned is .* = 110" \
 444         "Finish from nested call level 3"
 445 gdb_test "backtrace" \
 446         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 447         "backtrace after finish from nested call level 3"
 448 gdb_test "finish" "Value returned is .* = 9" \
 449         "Finish from nested call level 2"
 450 gdb_test "backtrace" \
 451         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 452         "backtrace after finish from nested call level 2"
 453 gdb_test "finish" "Value returned is .* = 5" \
 454         "Finish from nested call level 1"
 455 gdb_test "backtrace" "\#0  main .*" \
 456         "backtrace after finish from nested call level 1"
 457
 458 set new_reg_content [fetch_all_registers \
 459                      "register contents after nested call dummies"]
 460 if {$old_reg_content == $new_reg_content} then {
 461     pass "nested call dummies preserve register contents"
 462 } else {
 463     fail "nested call dummies preserve register contents"
 464 }
 465
 466 return 0
 467