gdb/testsuite/gdb.base/callfuncs.exp

   1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2 # 2004, 2007, 2008, 2009, 2010 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 # This file was written by Fred Fish. (fnf@cygnus.com)
  18 # and modified by Bob Manson. (manson@cygnus.com)
  19
  20 if $tracelevel then {
  21         strace $tracelevel
  22 }
  23
  24
  25 set testfile "callfuncs"
  26 set srcfile ${testfile}.c
  27 set binfile ${objdir}/${subdir}/${testfile}
  28
  29 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  30      untested callfuncs.exp
  31      return -1
  32 }
  33
  34 # Create and source the file that provides information about the compiler
  35 # used to compile the test case.
  36
  37 if [get_compiler_info ${binfile}] {
  38     return -1;
  39 }
  40
  41 if {$hp_aCC_compiler} {
  42     set prototypes 1
  43 } else {
  44     set prototypes 0
  45 }
  46
  47 # Some targets can't do function calls, so don't even bother with this
  48 # test.
  49 if [target_info exists gdb,cannot_call_functions] {
  50     setup_xfail "*-*-*" 2416
  51     fail "This target can not call functions"
  52     continue
  53 }
  54
  55 # Set the current language to C.  This counts as a test.  If it
  56 # fails, then we skip the other tests.
  57
  58 proc set_lang_c {} {
  59     global gdb_prompt
  60
  61     send_gdb "set language c\n"
  62     gdb_expect {
  63         -re ".*$gdb_prompt $" {}
  64         timeout { fail "set language c (timeout)" ; return 0; }
  65     }
  66
  67     send_gdb "show language\n"
  68     gdb_expect {
  69         -re ".* source language is \"c\".*$gdb_prompt $" {
  70             pass "set language to \"c\""
  71             return 1
  72         }
  73         -re ".*$gdb_prompt $" {
  74             fail "setting language to \"c\""
  75             return 0
  76         }
  77         timeout {
  78             fail "can't show language (timeout)"
  79             return 0
  80         }
  81     }
  82 }
  83
  84 # FIXME:  Before calling this proc, we should probably verify that
  85 # we can call inferior functions and get a valid integral value
  86 # returned.
  87 # Note that it is OK to check for 0 or 1 as the returned values, because C
  88 # specifies that the numeric value of a relational or logical expression
  89 # (computed in the inferior) is 1 for true and 0 for false.
  90
  91 proc do_function_calls {} {
  92     global prototypes
  93     global gdb_prompt
  94
  95     # We need to up this because this can be really slow on some boards.
  96     set timeout 60;
  97
  98     gdb_test "p t_char_values(0,0)" " = 0"
  99     gdb_test "p t_char_values('a','b')" " = 1"
 100     gdb_test "p t_char_values(char_val1,char_val2)" " = 1"
 101     gdb_test "p t_char_values('a',char_val2)" " = 1"
 102     gdb_test "p t_char_values(char_val1,'b')" " = 1"
 103
 104     gdb_test "p t_short_values(0,0)" " = 0"
 105     gdb_test "p t_short_values(10,-23)" " = 1"
 106     gdb_test "p t_short_values(short_val1,short_val2)" " = 1"
 107     gdb_test "p t_short_values(10,short_val2)" " = 1"
 108     gdb_test "p t_short_values(short_val1,-23)" " = 1"
 109
 110     gdb_test "p t_int_values(0,0)" " = 0"
 111     gdb_test "p t_int_values(87,-26)" " = 1"
 112     gdb_test "p t_int_values(int_val1,int_val2)" " = 1"
 113     gdb_test "p t_int_values(87,int_val2)" " = 1"
 114     gdb_test "p t_int_values(int_val1,-26)" " = 1"
 115
 116     gdb_test "p t_long_values(0,0)" " = 0"
 117     gdb_test "p t_long_values(789,-321)" " = 1"
 118     gdb_test "p t_long_values(long_val1,long_val2)" " = 1"
 119     gdb_test "p t_long_values(789,long_val2)" " = 1"
 120     gdb_test "p t_long_values(long_val1,-321)" " = 1"
 121
 122     if ![target_info exists gdb,skip_float_tests] {
 123         gdb_test "p t_float_values(0.0,0.0)" " = 0"
 124
 125         # These next four tests fail on the mn10300.
 126         # The first value is passed in regs, the other in memory.
 127         # Gcc emits different stabs for the two parameters; the first is
 128         # claimed to be a float, the second a double.
 129         # dbxout.c in gcc claims this is the desired behavior.
 130         # These tests also fail for RealView, because GDB can not tell that
 131         # the function is unprototyped.
 132         setup_xfail "mn10300-*-*"
 133         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 134         gdb_test "p t_float_values(3.14159,-2.3765)" " = 1"
 135         setup_xfail "mn10300-*-*"
 136         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 137         gdb_test "p t_float_values(float_val1,float_val2)" " = 1"
 138         setup_xfail "mn10300-*-*"
 139         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 140         gdb_test "p t_float_values(3.14159,float_val2)" " = 1"
 141         setup_xfail "mn10300-*-*"
 142         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 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_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."
 160
 161         gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
 162
 163         gdb_test "p t_double_values(0.0,0.0)" " = 0"
 164         gdb_test "p t_double_values(45.654,-67.66)" " = 1"
 165         gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
 166         gdb_test "p t_double_values(45.654,double_val2)" " = 1"
 167         gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
 168
 169         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."
 170
 171         gdb_test "p t_double_int(99.0, 1)" " = 0"
 172         gdb_test "p t_double_int(99.0, 99)" " = 1"
 173         gdb_test "p t_int_double(99, 1.0)" " = 0"
 174         gdb_test "p t_int_double(99, 99.0)" " = 1"
 175     }
 176
 177     gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
 178     gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
 179     gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
 180     gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
 181     gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
 182
 183     gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
 184     gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
 185     gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
 186     gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
 187     gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
 188
 189     gdb_test "p doubleit(4)" " = 8"
 190     gdb_test "p add(4,5)" " = 9"
 191     gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
 192     gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
 193
 194     gdb_test "p function_struct.func(5)" " = 10"
 195     gdb_test "p function_struct_ptr->func(10)" " = 20"
 196
 197     # GDB currently screws up the passing of function parameters for
 198     # ABIs that use function descriptors.  Instead of passing the
 199     # address of te function descriptor, GDB passes the address of the
 200     # function body.  This results in the called function treating the
 201     # first few instructions of the function proper as a descriptor
 202     # and attempting a jump through that (a totally random address).
 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_func_values(add,func_val2)" " = 1"
 207     setup_kfail "rs6000*-*-aix*" gdb/1457
 208     setup_kfail "powerpc*-*-aix*" gdb/1457
 209     setup_kfail hppa*-*-hpux* gdb/1457
 210     gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
 211     setup_kfail "rs6000*-*-aix*" gdb/1457
 212     setup_kfail "powerpc*-*-aix*" gdb/1457
 213     setup_kfail hppa*-*-hpux* gdb/1457
 214     gdb_test "p t_call_add(add,3,4)" " = 7"
 215     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 216
 217     gdb_test "p t_enum_value1(enumval1)" " = 1"
 218     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 219     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 220
 221     gdb_test "p t_enum_value2(enumval2)" " = 1"
 222     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 223     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 224
 225     gdb_test "p sum_args(1,{2})" " = 2"
 226     gdb_test "p sum_args(2,{2,3})" " = 5"
 227     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 228     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 229
 230     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 231
 232     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 233
 234     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 235         "call inferior func with struct - returns char"
 236     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 237         "call inferior func with struct - returns short"
 238     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 239         "call inferior func with struct - returns int"
 240     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 241         "call inferior func with struct - returns long"
 242     gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 243         "call inferior func with struct - returns float"
 244     gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 245         "call inferior func with struct - returns double"
 246     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 247         "call inferior func with struct - returns char *"
 248 }
 249
 250 # Procedure to get current content of all registers.
 251 proc fetch_all_registers {test} {
 252     global gdb_prompt
 253
 254     set all_registers_lines {}
 255     set bad -1
 256     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
 257     # corrupting the next matches.
 258     if {[gdb_test_multiple "info all-registers" $test {
 259         -re "info all-registers\r\n" {
 260             exp_continue
 261         }
 262         -ex "The program has no registers now" {
 263             set bad 1
 264             exp_continue
 265         }
 266         -re "^bspstore\[ \t\]+\[^\r\n\]+\r\n" {
 267             if [istarget "ia64-*-*"] {
 268                 # Filter out bspstore which is specially tied to bsp,
 269                 # giving spurious differences.
 270             } else {
 271                 lappend all_registers_lines $expect_out(0,string)
 272             }
 273             exp_continue
 274         }
 275         -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" {
 276             lappend all_registers_lines $expect_out(0,string)
 277             exp_continue
 278         }
 279         -re "$gdb_prompt $" {
 280             incr bad
 281         }
 282         -re "^\[^\r\n\]+\r\n" {
 283             if {!$bad} {
 284                 warning "Unrecognized output: $expect_out(0,string)"
 285                 set bad 1
 286             }
 287             exp_continue
 288         }
 289     }] != 0} {
 290         return {}
 291     }
 292
 293     if {$bad} {
 294         fail $test
 295         return {}
 296     }
 297
 298     pass $test
 299     return $all_registers_lines
 300 }
 301
 302
 303 # Start with a fresh gdb.
 304
 305 gdb_exit
 306 gdb_start
 307 gdb_reinitialize_dir $srcdir/$subdir
 308 gdb_load ${binfile}
 309
 310 gdb_test "set print sevenbit-strings" ""
 311 gdb_test "set print address off" ""
 312 gdb_test "set width 0" ""
 313
 314 if { $hp_aCC_compiler } {
 315     # Do not set language explicitly to 'C'.  This will cause aCC
 316     # tests to fail because promotion rules are different.  Just let
 317     # the language be set to the default.
 318
 319     if { ![runto_main] } {
 320         gdb_suppress_tests;
 321     }
 322
 323     # However, turn off overload-resolution for aCC.  Having it on causes
 324     # a lot of failures.
 325
 326     gdb_test "set overload-resolution 0" ".*"
 327 } else {
 328     if { ![set_lang_c] } {
 329         gdb_suppress_tests;
 330     } else {
 331         if { ![runto_main] } {
 332             gdb_suppress_tests;
 333         }
 334     }
 335 }
 336
 337 get_debug_format
 338
 339 # Make sure that malloc gets called and that the floating point unit
 340 # is initialized via a call to t_double_values.
 341 gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \
 342   "next to t_double_values"
 343 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
 344   "next to t_structs_c"
 345
 346 # Save all register contents.
 347 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 348
 349 # Perform function calls.
 350 do_function_calls
 351
 352 # Check if all registers still have the same value.
 353 set new_reg_content [fetch_all_registers \
 354                      "register contents after gdb function calls"]
 355 if {$old_reg_content == $new_reg_content} then {
 356     pass "gdb function calls preserve register contents"
 357 } else {
 358     set old_reg_content $new_reg_content
 359     fail "gdb function calls preserve register contents"
 360 }
 361
 362 # Set breakpoint at a function we will call from gdb.
 363 gdb_breakpoint add
 364
 365 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
 366 # make sure we are back at main and still have the same register contents.
 367 gdb_test "print add(4,5)" \
 368         "The program being debugged stopped while.*" \
 369         "stop at breakpoint in call dummy function"
 370 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 371 if ![gdb_test "bt 2" \
 372               "#0  main.*" \
 373               "bt after continuing from call dummy breakpoint"] then {
 374     set new_reg_content [fetch_all_registers \
 375                          "register contents after stop in call dummy"]
 376     if {$old_reg_content == $new_reg_content} then {
 377         pass "continue after stop in call dummy preserves register contents"
 378     } else {
 379         fail "continue after stop in call dummy preserves register contents"
 380     }
 381 }
 382
 383 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 384 # make sure we are back at main and still have the same register contents.
 385 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 386         "call function causing a breakpoint then do a finish"
 387 gdb_test "finish" \
 388          "Value returned is .* = 9" \
 389          "finish from call dummy breakpoint returns correct value"
 390 if ![gdb_test "bt 2" \
 391               "#0  main.*" \
 392               "bt after finishing from call dummy breakpoint"] then {
 393     set new_reg_content [fetch_all_registers \
 394                          "register contents after finish in call dummy"]
 395     if {$old_reg_content == $new_reg_content} then {
 396         pass "finish after stop in call dummy preserves register contents"
 397     } else {
 398         fail "finish after stop in call dummy preserves register contents"
 399     }
 400 }
 401
 402 # Call function (causing a breakpoint hit in the call dummy) and do a return
 403 # with a value, make sure we are back at main with the same register contents.
 404 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 405         "call function causing a breakpoint and then do a return"
 406 if ![gdb_test "return 7" \
 407               "#0  main.*" \
 408               "back at main after return from call dummy breakpoint" \
 409               "Make add return now. .y or n.*" \
 410               "y"] then {
 411     set new_reg_content [fetch_all_registers \
 412                          "register contents after return in call dummy"]
 413     if {$old_reg_content == $new_reg_content} then {
 414         pass "return after stop in call dummy preserves register contents"
 415     } else {
 416         fail "return after stop in call dummy preserves register contents"
 417     }
 418 }
 419
 420 # Call function (causing a breakpoint hit in the call dummy), and
 421 # call another function from the call dummy frame (thereby setting up
 422 # several nested call dummy frames).  Test that backtrace and finish
 423 # work when several call dummies are nested.
 424 gdb_breakpoint sum10
 425 gdb_breakpoint t_small_values
 426 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
 427         "stop at nested call level 1"
 428 gdb_test "backtrace" \
 429         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 430         "backtrace at nested call level 1"
 431 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 432         "stop at nested call level 2"
 433 gdb_test "backtrace" \
 434         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 435         "backtrace at nested call level 2"
 436 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
 437         "The program being debugged stopped while.*" \
 438         "stop at nested call level 3"
 439 gdb_test "backtrace" \
 440         "\#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.*" \
 441         "backtrace at nested call level 3"
 442 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
 443         "The program being debugged stopped while.*" \
 444         "stop at nested call level 4"
 445 gdb_test "backtrace" \
 446         "\#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.*" \
 447         "backtrace at nested call level 4"
 448 gdb_test "finish" "Value returned is .* = 100" \
 449         "Finish from nested call level 4"
 450 gdb_test "backtrace" \
 451         "\#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.*" \
 452         "backtrace after finish from nested call level 4"
 453 gdb_test "finish" "Value returned is .* = 110" \
 454         "Finish from nested call level 3"
 455 gdb_test "backtrace" \
 456         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 457         "backtrace after finish from nested call level 3"
 458 gdb_test "finish" "Value returned is .* = 9" \
 459         "Finish from nested call level 2"
 460 gdb_test "backtrace" \
 461         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 462         "backtrace after finish from nested call level 2"
 463 gdb_test "finish" "Value returned is .* = 5" \
 464         "Finish from nested call level 1"
 465 gdb_test "backtrace" "\#0  main .*" \
 466         "backtrace after finish from nested call level 1"
 467
 468 set new_reg_content [fetch_all_registers \
 469                      "register contents after nested call dummies"]
 470 if {$old_reg_content == $new_reg_content} then {
 471     pass "nested call dummies preserve register contents"
 472 } else {
 473     fail "nested call dummies preserve register contents"
 474 }
 475
 476 # GDB should not crash by internal error on $sp underflow during the inferior
 477 # call.  It is OK it will stop on some: Cannot access memory at address 0x$hex.
 478
 479 if {![target_info exists gdb,nosignals] && ![istarget "*-*-uclinux*"]} {
 480     gdb_test {set $old_sp = $sp}
 481
 482     gdb_test {set $sp = 0}
 483     gdb_test "call doubleit (1)" "" "sp == 0: call doubleit (1)"
 484
 485     gdb_test {set $sp = -1}
 486     gdb_test "call doubleit (1)" "" "sp == -1: call doubleit (1)"
 487
 488     gdb_test {set $sp = $old_sp}
 489 }