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