gdb/testsuite/gdb.base/callfuncs.exp

   1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   2 # 2003, 2004 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 2 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, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 # Please email any bugs, comments, and/or additions to this file to:
  19 # bug-gdb@prep.ai.mit.edu
  20
  21 # This file was written by Fred Fish. (fnf@cygnus.com)
  22 # and modified by Bob Manson. (manson@cygnus.com)
  23
  24 if $tracelevel then {
  25         strace $tracelevel
  26 }
  27
  28 set prms_id 0
  29 set bug_id 0
  30
  31 set testfile "callfuncs"
  32 set srcfile ${testfile}.c
  33 set binfile ${objdir}/${subdir}/${testfile}
  34
  35 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  36      untested callfuncs.exp
  37      return -1
  38 }
  39
  40 # Create and source the file that provides information about the compiler
  41 # used to compile the test case.
  42
  43 if [get_compiler_info ${binfile}] {
  44     return -1;
  45 }
  46
  47 if {$hp_aCC_compiler} {
  48     set prototypes 1
  49 } else {
  50     set prototypes 0
  51 }
  52
  53 # Some targets can't do function calls, so don't even bother with this
  54 # test.
  55 if [target_info exists gdb,cannot_call_functions] {
  56     setup_xfail "*-*-*" 2416
  57     fail "This target can not call functions"
  58     continue
  59 }
  60
  61 # Set the current language to C.  This counts as a test.  If it
  62 # fails, then we skip the other tests.
  63
  64 proc set_lang_c {} {
  65     global gdb_prompt
  66
  67     send_gdb "set language c\n"
  68     gdb_expect {
  69         -re ".*$gdb_prompt $" {}
  70         timeout { fail "set language c (timeout)" ; return 0; }
  71     }
  72
  73     send_gdb "show language\n"
  74     gdb_expect {
  75         -re ".* source language is \"c\".*$gdb_prompt $" {
  76             pass "set language to \"c\""
  77             return 1
  78         }
  79         -re ".*$gdb_prompt $" {
  80             fail "setting language to \"c\""
  81             return 0
  82         }
  83         timeout {
  84             fail "can't show language (timeout)"
  85             return 0
  86         }
  87     }
  88 }
  89
  90 # FIXME:  Before calling this proc, we should probably verify that
  91 # we can call inferior functions and get a valid integral value
  92 # returned.
  93 # Note that it is OK to check for 0 or 1 as the returned values, because C
  94 # specifies that the numeric value of a relational or logical expression
  95 # (computed in the inferior) is 1 for true and 0 for false.
  96
  97 proc do_function_calls {} {
  98     global prototypes
  99     global gdb_prompt
 100
 101     # We need to up this because this can be really slow on some boards.
 102     set timeout 60;
 103
 104     gdb_test "p t_char_values(0,0)" " = 0"
 105     gdb_test "p t_char_values('a','b')" " = 1"
 106     gdb_test "p t_char_values(char_val1,char_val2)" " = 1"
 107     gdb_test "p t_char_values('a',char_val2)" " = 1"
 108     gdb_test "p t_char_values(char_val1,'b')" " = 1"
 109
 110     gdb_test "p t_short_values(0,0)" " = 0"
 111     gdb_test "p t_short_values(10,-23)" " = 1"
 112     gdb_test "p t_short_values(short_val1,short_val2)" " = 1"
 113     gdb_test "p t_short_values(10,short_val2)" " = 1"
 114     gdb_test "p t_short_values(short_val1,-23)" " = 1"
 115
 116     gdb_test "p t_int_values(0,0)" " = 0"
 117     gdb_test "p t_int_values(87,-26)" " = 1"
 118     gdb_test "p t_int_values(int_val1,int_val2)" " = 1"
 119     gdb_test "p t_int_values(87,int_val2)" " = 1"
 120     gdb_test "p t_int_values(int_val1,-26)" " = 1"
 121
 122     gdb_test "p t_long_values(0,0)" " = 0"
 123     gdb_test "p t_long_values(789,-321)" " = 1"
 124     gdb_test "p t_long_values(long_val1,long_val2)" " = 1"
 125     gdb_test "p t_long_values(789,long_val2)" " = 1"
 126     gdb_test "p t_long_values(long_val1,-321)" " = 1"
 127
 128     if ![target_info exists gdb,skip_float_tests] {
 129         gdb_test "p t_float_values(0.0,0.0)" " = 0"
 130
 131         # These next four tests fail on the mn10300.
 132         # The first value is passed in regs, the other in memory.
 133         # Gcc emits different stabs for the two parameters; the first is
 134         # claimed to be a float, the second a double.
 135         # dbxout.c in gcc claims this is the desired behavior.
 136         setup_xfail "mn10300-*-*"
 137         gdb_test "p t_float_values(3.14159,-2.3765)" " = 1"
 138         setup_xfail "mn10300-*-*"
 139         gdb_test "p t_float_values(float_val1,float_val2)" " = 1"
 140         setup_xfail "mn10300-*-*"
 141         gdb_test "p t_float_values(3.14159,float_val2)" " = 1"
 142         setup_xfail "mn10300-*-*"
 143         gdb_test "p t_float_values(float_val1,-2.3765)" " = 1"
 144
 145         # Test passing of arguments which might not be widened.
 146         gdb_test "p t_float_values2(0.0,0.0)" " = 0"
 147
 148         # Although PR 5318 mentions SunOS specifically, this seems
 149         # to be a generic problem on quite a few platforms.
 150         if $prototypes then {
 151             setup_xfail "sparc-*-*" "mips*-*-*" 5318
 152             if { ! [test_compiler_info gcc-*-*] } then {
 153                 setup_xfail "alpha-dec-osf2*" "i*86-*-sysv4*" 5318
 154             }
 155         }
 156
 157         gdb_test "p t_float_values2(3.14159,float_val2)" " = 1"
 158
 159         gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
 160
 161         gdb_test "p t_double_values(0.0,0.0)" " = 0"
 162         gdb_test "p t_double_values(45.654,-67.66)" " = 1"
 163         gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
 164         gdb_test "p t_double_values(45.654,double_val2)" " = 1"
 165         gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
 166     }
 167
 168     gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
 169     gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
 170     gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
 171     gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
 172     gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
 173
 174     gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
 175     gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
 176     gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
 177     gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
 178     gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
 179
 180     gdb_test "p doubleit(4)" " = 8"
 181     gdb_test "p add(4,5)" " = 9"
 182     gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
 183     gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
 184
 185     # GDB currently screws up the passing of function parameters for
 186     # ABIs that use function descriptors.  Instead of passing the
 187     # address of te function descriptor, GDB passes the address of the
 188     # function body.  This results in the called function treating the
 189     # first few instructions of the function proper as a descriptor
 190     # and attempting a jump through that (a totally random address).
 191     setup_kfail "rs6000*-*-aix*" gdb/1457
 192     setup_kfail "powerpc*-*-aix*" gdb/1457
 193     setup_kfail hppa*-*-hpux* gdb/1457
 194     gdb_test "p t_func_values(add,func_val2)" " = 1"
 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(func_val1,doubleit)" " = 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_call_add(add,3,4)" " = 7"
 203     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 204
 205     gdb_test "p t_enum_value1(enumval1)" " = 1"
 206     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 207     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 208
 209     gdb_test "p t_enum_value2(enumval2)" " = 1"
 210     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 211     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 212
 213     gdb_test "p sum_args(1,{2})" " = 2"
 214     gdb_test "p sum_args(2,{2,3})" " = 5"
 215     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 216     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 217
 218     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 219
 220     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 221
 222     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 223         "call inferior func with struct - returns char"
 224     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 225         "call inferior func with struct - returns short"
 226     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 227         "call inferior func with struct - returns int"
 228     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 229         "call inferior func with struct - returns long"
 230     gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 231         "call inferior func with struct - returns float"
 232     gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 233         "call inferior func with struct - returns double"
 234     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 235         "call inferior func with struct - returns char *"
 236 }
 237
 238 # Procedure to get current content of all registers.
 239 global all_registers_content
 240 set all_registers_content ""
 241 proc do_get_all_registers { } {
 242     global gdb_prompt
 243     global expect_out
 244     global all_registers_content
 245
 246     set all_registers_content ""
 247     send_gdb "info all-registers\n"
 248     gdb_expect {
 249         -re "info all-registers\r\n(.*)$gdb_prompt $" {
 250             set all_registers_content $expect_out(1,string)
 251         }
 252         default {}
 253     }
 254 }
 255
 256 # Start with a fresh gdb.
 257
 258 gdb_exit
 259 gdb_start
 260 gdb_reinitialize_dir $srcdir/$subdir
 261 gdb_load ${binfile}
 262
 263 gdb_test "set print sevenbit-strings" ""
 264 gdb_test "set print address off" ""
 265 gdb_test "set width 0" ""
 266
 267 if { $hp_aCC_compiler } {
 268     # Do not set language explicitly to 'C'.  This will cause aCC
 269     # tests to fail because promotion rules are different.  Just let
 270     # the language be set to the default.
 271
 272     if { ![runto_main] } {
 273         gdb_suppress_tests;
 274     }
 275
 276     # However, turn off overload-resolution for aCC.  Having it on causes
 277     # a lot of failures.
 278
 279     gdb_test "set overload-resolution 0" ".*"
 280 } else {
 281     if { ![set_lang_c] } {
 282         gdb_suppress_tests;
 283     } else {
 284         if { ![runto_main] } {
 285             gdb_suppress_tests;
 286         }
 287     }
 288 }
 289
 290 get_debug_format
 291
 292 # Make sure that malloc gets called and that the floating point unit
 293 # is initialized via a call to t_double_values.
 294 gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \
 295   "next to t_double_values"
 296 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
 297   "next to t_structs_c"
 298
 299 # Save all register contents.
 300 do_get_all_registers
 301 set old_reg_content $all_registers_content
 302
 303 # Perform function calls.
 304 do_function_calls
 305
 306 # Check if all registers still have the same value.
 307 do_get_all_registers
 308 set new_reg_content $all_registers_content
 309 if ![string compare $old_reg_content $new_reg_content] then {
 310     pass "gdb function calls preserve register contents"
 311 } else {
 312     set old_reg_content $all_registers_content
 313     fail "gdb function calls preserve register contents"
 314 }
 315
 316 # Set breakpoint at a function we will call from gdb.
 317 gdb_breakpoint add
 318
 319 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
 320 # make sure we are back at main and still have the same register contents.
 321 gdb_test "print add(4,5)" \
 322         "The program being debugged stopped while.*" \
 323         "stop at breakpoint in call dummy function"
 324 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 325 if ![gdb_test "bt 2" \
 326               "#0  main.*" \
 327               "bt after continuing from call dummy breakpoint"] then {
 328     do_get_all_registers
 329     set new_reg_content $all_registers_content
 330     if ![string compare $old_reg_content $new_reg_content] then {
 331         pass "continue after stop in call dummy preserves register contents"
 332     } else {
 333         fail "continue after stop in call dummy preserves register contents"
 334     }
 335 }
 336
 337 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 338 # make sure we are back at main and still have the same register contents.
 339 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 340         "call function causing a breakpoint then do a finish"
 341 gdb_test "finish" \
 342          "Value returned is .* = 9" \
 343          "finish from call dummy breakpoint returns correct value"
 344 if ![gdb_test "bt 2" \
 345               "#0  main.*" \
 346               "bt after finishing from call dummy breakpoint"] then {
 347     do_get_all_registers
 348     set new_reg_content $all_registers_content
 349     if ![string compare $old_reg_content $new_reg_content] then {
 350         pass "finish after stop in call dummy preserves register contents"
 351     } else {
 352         fail "finish after stop in call dummy preserves register contents"
 353     }
 354 }
 355
 356 # Call function (causing a breakpoint hit in the call dummy) and do a return
 357 # with a value, make sure we are back at main with the same register contents.
 358 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 359         "call function causing a breakpoint and then do a return"
 360 if ![gdb_test "return 7" \
 361               "#0  main.*" \
 362               "back at main after return from call dummy breakpoint" \
 363               "Make add return now. .y or n.*" \
 364               "y"] then {
 365     do_get_all_registers
 366     set new_reg_content $all_registers_content
 367     if ![string compare $old_reg_content $new_reg_content] then {
 368         pass "return after stop in call dummy preserves register contents"
 369     } else {
 370         fail "return after stop in call dummy preserves register contents"
 371     }
 372 }
 373
 374 # Call function (causing a breakpoint hit in the call dummy), and
 375 # call another function from the call dummy frame (thereby setting up
 376 # several nested call dummy frames).  Test that backtrace and finish
 377 # work when several call dummies are nested.
 378 gdb_breakpoint sum10
 379 gdb_breakpoint t_small_values
 380 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
 381         "stop at nested call level 1"
 382 gdb_test "backtrace" \
 383         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 384         "backtrace at nested call level 1"
 385 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 386         "stop at nested call level 2"
 387 gdb_test "backtrace" \
 388         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 389         "backtrace at nested call level 2"
 390 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
 391         "The program being debugged stopped while.*" \
 392         "stop at nested call level 3"
 393 gdb_test "backtrace" \
 394         "\#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.*" \
 395         "backtrace at nested call level 3"
 396 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
 397         "The program being debugged stopped while.*" \
 398         "stop at nested call level 4"
 399 gdb_test "backtrace" \
 400         "\#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.*" \
 401         "backtrace at nested call level 4"
 402 gdb_test "finish" "Value returned is .* = 100" \
 403         "Finish from nested call level 4"
 404 gdb_test "backtrace" \
 405         "\#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.*" \
 406         "backtrace after finish from nested call level 4"
 407 gdb_test "finish" "Value returned is .* = 110" \
 408         "Finish from nested call level 3"
 409 gdb_test "backtrace" \
 410         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 411         "backtrace after finish from nested call level 3"
 412 gdb_test "finish" "Value returned is .* = 9" \
 413         "Finish from nested call level 2"
 414 gdb_test "backtrace" \
 415         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 416         "backtrace after finish from nested call level 2"
 417 gdb_test "finish" "Value returned is .* = 5" \
 418         "Finish from nested call level 1"
 419 gdb_test "backtrace" "\#0  main .*" \
 420         "backtrace after finish from nested call level 1"
 421
 422 do_get_all_registers
 423 set new_reg_content $all_registers_content
 424 if ![string compare $old_reg_content $new_reg_content] then {
 425     pass "nested call dummies preserve register contents"
 426 } else {
 427     fail "nested call dummies preserve register contents"
 428 }
 429
 430 return 0
 431