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 set prms_id 0
  25 set bug_id 0
  26
  27 set testfile "callfuncs"
  28 set srcfile ${testfile}.c
  29 set binfile ${objdir}/${subdir}/${testfile}
  30
  31 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  32      untested callfuncs.exp
  33      return -1
  34 }
  35
  36 # Create and source the file that provides information about the compiler
  37 # used to compile the test case.
  38
  39 if [get_compiler_info ${binfile}] {
  40     return -1;
  41 }
  42
  43 if {$hp_aCC_compiler} {
  44     set prototypes 1
  45 } else {
  46     set prototypes 0
  47 }
  48
  49 # Some targets can't do function calls, so don't even bother with this
  50 # test.
  51 if [target_info exists gdb,cannot_call_functions] {
  52     setup_xfail "*-*-*" 2416
  53     fail "This target can not call functions"
  54     continue
  55 }
  56
  57 # Set the current language to C.  This counts as a test.  If it
  58 # fails, then we skip the other tests.
  59
  60 proc set_lang_c {} {
  61     global gdb_prompt
  62
  63     send_gdb "set language c\n"
  64     gdb_expect {
  65         -re ".*$gdb_prompt $" {}
  66         timeout { fail "set language c (timeout)" ; return 0; }
  67     }
  68
  69     send_gdb "show language\n"
  70     gdb_expect {
  71         -re ".* source language is \"c\".*$gdb_prompt $" {
  72             pass "set language to \"c\""
  73             return 1
  74         }
  75         -re ".*$gdb_prompt $" {
  76             fail "setting language to \"c\""
  77             return 0
  78         }
  79         timeout {
  80             fail "can't show language (timeout)"
  81             return 0
  82         }
  83     }
  84 }
  85
  86 # FIXME:  Before calling this proc, we should probably verify that
  87 # we can call inferior functions and get a valid integral value
  88 # returned.
  89 # Note that it is OK to check for 0 or 1 as the returned values, because C
  90 # specifies that the numeric value of a relational or logical expression
  91 # (computed in the inferior) is 1 for true and 0 for false.
  92
  93 proc do_function_calls {} {
  94     global prototypes
  95     global gdb_prompt
  96
  97     # We need to up this because this can be really slow on some boards.
  98     set timeout 60;
  99
 100     gdb_test "p t_char_values(0,0)" " = 0"
 101     gdb_test "p t_char_values('a','b')" " = 1"
 102     gdb_test "p t_char_values(char_val1,char_val2)" " = 1"
 103     gdb_test "p t_char_values('a',char_val2)" " = 1"
 104     gdb_test "p t_char_values(char_val1,'b')" " = 1"
 105
 106     gdb_test "p t_short_values(0,0)" " = 0"
 107     gdb_test "p t_short_values(10,-23)" " = 1"
 108     gdb_test "p t_short_values(short_val1,short_val2)" " = 1"
 109     gdb_test "p t_short_values(10,short_val2)" " = 1"
 110     gdb_test "p t_short_values(short_val1,-23)" " = 1"
 111
 112     gdb_test "p t_int_values(0,0)" " = 0"
 113     gdb_test "p t_int_values(87,-26)" " = 1"
 114     gdb_test "p t_int_values(int_val1,int_val2)" " = 1"
 115     gdb_test "p t_int_values(87,int_val2)" " = 1"
 116     gdb_test "p t_int_values(int_val1,-26)" " = 1"
 117
 118     gdb_test "p t_long_values(0,0)" " = 0"
 119     gdb_test "p t_long_values(789,-321)" " = 1"
 120     gdb_test "p t_long_values(long_val1,long_val2)" " = 1"
 121     gdb_test "p t_long_values(789,long_val2)" " = 1"
 122     gdb_test "p t_long_values(long_val1,-321)" " = 1"
 123
 124     if ![target_info exists gdb,skip_float_tests] {
 125         gdb_test "p t_float_values(0.0,0.0)" " = 0"
 126
 127         # These next four tests fail on the mn10300.
 128         # The first value is passed in regs, the other in memory.
 129         # Gcc emits different stabs for the two parameters; the first is
 130         # claimed to be a float, the second a double.
 131         # dbxout.c in gcc claims this is the desired behavior.
 132         # These tests also fail for RealView, because GDB can not tell that
 133         # the function is unprototyped.
 134         setup_xfail "mn10300-*-*"
 135         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 136         gdb_test "p t_float_values(3.14159,-2.3765)" " = 1"
 137         setup_xfail "mn10300-*-*"
 138         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 139         gdb_test "p t_float_values(float_val1,float_val2)" " = 1"
 140         setup_xfail "mn10300-*-*"
 141         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 142         gdb_test "p t_float_values(3.14159,float_val2)" " = 1"
 143         setup_xfail "mn10300-*-*"
 144         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 145         gdb_test "p t_float_values(float_val1,-2.3765)" " = 1"
 146
 147         # Test passing of arguments which might not be widened.
 148         gdb_test "p t_float_values2(0.0,0.0)" " = 0"
 149
 150         # Although PR 5318 mentions SunOS specifically, this seems
 151         # to be a generic problem on quite a few platforms.
 152         if $prototypes then {
 153             setup_xfail "sparc-*-*" "mips*-*-*" 5318
 154             if { ! [test_compiler_info gcc-*-*] } then {
 155                 setup_xfail "alpha-dec-osf2*" "i*86-*-sysv4*" 5318
 156             }
 157         }
 158
 159         gdb_test "p t_float_values2(3.14159,float_val2)" " = 1"
 160
 161         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."
 162
 163         gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
 164
 165         gdb_test "p t_double_values(0.0,0.0)" " = 0"
 166         gdb_test "p t_double_values(45.654,-67.66)" " = 1"
 167         gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
 168         gdb_test "p t_double_values(45.654,double_val2)" " = 1"
 169         gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
 170
 171         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."
 172
 173         gdb_test "p t_double_int(99.0, 1)" " = 0"
 174         gdb_test "p t_double_int(99.0, 99)" " = 1"
 175         gdb_test "p t_int_double(99, 1.0)" " = 0"
 176         gdb_test "p t_int_double(99, 99.0)" " = 1"
 177     }
 178
 179     gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
 180     gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
 181     gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
 182     gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
 183     gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
 184
 185     gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
 186     gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
 187     gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
 188     gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
 189     gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
 190
 191     gdb_test "p doubleit(4)" " = 8"
 192     gdb_test "p add(4,5)" " = 9"
 193     gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
 194     gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
 195
 196     gdb_test "p function_struct.func(5)" " = 10"
 197     gdb_test "p function_struct_ptr->func(10)" " = 20"
 198
 199     # GDB currently screws up the passing of function parameters for
 200     # ABIs that use function descriptors.  Instead of passing the
 201     # address of te function descriptor, GDB passes the address of the
 202     # function body.  This results in the called function treating the
 203     # first few instructions of the function proper as a descriptor
 204     # and attempting a jump through that (a totally random address).
 205     setup_kfail "rs6000*-*-aix*" gdb/1457
 206     setup_kfail "powerpc*-*-aix*" gdb/1457
 207     setup_kfail hppa*-*-hpux* gdb/1457
 208     gdb_test "p t_func_values(add,func_val2)" " = 1"
 209     setup_kfail "rs6000*-*-aix*" gdb/1457
 210     setup_kfail "powerpc*-*-aix*" gdb/1457
 211     setup_kfail hppa*-*-hpux* gdb/1457
 212     gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
 213     setup_kfail "rs6000*-*-aix*" gdb/1457
 214     setup_kfail "powerpc*-*-aix*" gdb/1457
 215     setup_kfail hppa*-*-hpux* gdb/1457
 216     gdb_test "p t_call_add(add,3,4)" " = 7"
 217     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 218
 219     gdb_test "p t_enum_value1(enumval1)" " = 1"
 220     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 221     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 222
 223     gdb_test "p t_enum_value2(enumval2)" " = 1"
 224     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 225     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 226
 227     gdb_test "p sum_args(1,{2})" " = 2"
 228     gdb_test "p sum_args(2,{2,3})" " = 5"
 229     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 230     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 231
 232     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 233
 234     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 235
 236     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 237         "call inferior func with struct - returns char"
 238     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 239         "call inferior func with struct - returns short"
 240     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 241         "call inferior func with struct - returns int"
 242     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 243         "call inferior func with struct - returns long"
 244     gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 245         "call inferior func with struct - returns float"
 246     gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 247         "call inferior func with struct - returns double"
 248     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 249         "call inferior func with struct - returns char *"
 250 }
 251
 252 # Procedure to get current content of all registers.
 253 proc fetch_all_registers {test} {
 254     global gdb_prompt
 255
 256     set all_registers_lines {}
 257     set bad -1
 258     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
 259     # corrupting the next matches.
 260     if {[gdb_test_multiple "info all-registers" $test {
 261         -re "info all-registers\r\n" {
 262             exp_continue
 263         }
 264         -ex "The program has no registers now" {
 265             set bad 1
 266             exp_continue
 267         }
 268         -re "^bspstore\[ \t\]+\[^\r\n\]+\r\n" {
 269             if [istarget "ia64-*-*"] {
 270                 # Filter out bspstore which is specially tied to bsp,
 271                 # giving spurious differences.
 272             } else {
 273                 lappend all_registers_lines $expect_out(0,string)
 274             }
 275             exp_continue
 276         }
 277         -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" {
 278             lappend all_registers_lines $expect_out(0,string)
 279             exp_continue
 280         }
 281         -re "$gdb_prompt $" {
 282             incr bad
 283         }
 284         -re "^\[^\r\n\]+\r\n" {
 285             if {!$bad} {
 286                 warning "Unrecognized output: $expect_out(0,string)"
 287                 set bad 1
 288             }
 289             exp_continue
 290         }
 291     }] != 0} {
 292         return {}
 293     }
 294
 295     if {$bad} {
 296         fail $test
 297         return {}
 298     }
 299
 300     pass $test
 301     return $all_registers_lines
 302 }
 303
 304
 305 # Start with a fresh gdb.
 306
 307 gdb_exit
 308 gdb_start
 309 gdb_reinitialize_dir $srcdir/$subdir
 310 gdb_load ${binfile}
 311
 312 gdb_test "set print sevenbit-strings" ""
 313 gdb_test "set print address off" ""
 314 gdb_test "set width 0" ""
 315
 316 if { $hp_aCC_compiler } {
 317     # Do not set language explicitly to 'C'.  This will cause aCC
 318     # tests to fail because promotion rules are different.  Just let
 319     # the language be set to the default.
 320
 321     if { ![runto_main] } {
 322         gdb_suppress_tests;
 323     }
 324
 325     # However, turn off overload-resolution for aCC.  Having it on causes
 326     # a lot of failures.
 327
 328     gdb_test "set overload-resolution 0" ".*"
 329 } else {
 330     if { ![set_lang_c] } {
 331         gdb_suppress_tests;
 332     } else {
 333         if { ![runto_main] } {
 334             gdb_suppress_tests;
 335         }
 336     }
 337 }
 338
 339 get_debug_format
 340
 341 # Make sure that malloc gets called and that the floating point unit
 342 # is initialized via a call to t_double_values.
 343 gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \
 344   "next to t_double_values"
 345 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
 346   "next to t_structs_c"
 347
 348 # Save all register contents.
 349 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 350
 351 # Perform function calls.
 352 do_function_calls
 353
 354 # Check if all registers still have the same value.
 355 set new_reg_content [fetch_all_registers \
 356                      "register contents after gdb function calls"]
 357 if {$old_reg_content == $new_reg_content} then {
 358     pass "gdb function calls preserve register contents"
 359 } else {
 360     set old_reg_content $new_reg_content
 361     fail "gdb function calls preserve register contents"
 362 }
 363
 364 # Set breakpoint at a function we will call from gdb.
 365 gdb_breakpoint add
 366
 367 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
 368 # make sure we are back at main and still have the same register contents.
 369 gdb_test "print add(4,5)" \
 370         "The program being debugged stopped while.*" \
 371         "stop at breakpoint in call dummy function"
 372 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 373 if ![gdb_test "bt 2" \
 374               "#0  main.*" \
 375               "bt after continuing from call dummy breakpoint"] then {
 376     set new_reg_content [fetch_all_registers \
 377                          "register contents after stop in call dummy"]
 378     if {$old_reg_content == $new_reg_content} then {
 379         pass "continue after stop in call dummy preserves register contents"
 380     } else {
 381         fail "continue after stop in call dummy preserves register contents"
 382     }
 383 }
 384
 385 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 386 # make sure we are back at main and still have the same register contents.
 387 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 388         "call function causing a breakpoint then do a finish"
 389 gdb_test "finish" \
 390          "Value returned is .* = 9" \
 391          "finish from call dummy breakpoint returns correct value"
 392 if ![gdb_test "bt 2" \
 393               "#0  main.*" \
 394               "bt after finishing from call dummy breakpoint"] then {
 395     set new_reg_content [fetch_all_registers \
 396                          "register contents after finish in call dummy"]
 397     if {$old_reg_content == $new_reg_content} then {
 398         pass "finish after stop in call dummy preserves register contents"
 399     } else {
 400         fail "finish after stop in call dummy preserves register contents"
 401     }
 402 }
 403
 404 # Call function (causing a breakpoint hit in the call dummy) and do a return
 405 # with a value, make sure we are back at main with the same register contents.
 406 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 407         "call function causing a breakpoint and then do a return"
 408 if ![gdb_test "return 7" \
 409               "#0  main.*" \
 410               "back at main after return from call dummy breakpoint" \
 411               "Make add return now. .y or n.*" \
 412               "y"] then {
 413     set new_reg_content [fetch_all_registers \
 414                          "register contents after return in call dummy"]
 415     if {$old_reg_content == $new_reg_content} then {
 416         pass "return after stop in call dummy preserves register contents"
 417     } else {
 418         fail "return after stop in call dummy preserves register contents"
 419     }
 420 }
 421
 422 # Call function (causing a breakpoint hit in the call dummy), and
 423 # call another function from the call dummy frame (thereby setting up
 424 # several nested call dummy frames).  Test that backtrace and finish
 425 # work when several call dummies are nested.
 426 gdb_breakpoint sum10
 427 gdb_breakpoint t_small_values
 428 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
 429         "stop at nested call level 1"
 430 gdb_test "backtrace" \
 431         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 432         "backtrace at nested call level 1"
 433 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 434         "stop at nested call level 2"
 435 gdb_test "backtrace" \
 436         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 437         "backtrace at nested call level 2"
 438 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
 439         "The program being debugged stopped while.*" \
 440         "stop at nested call level 3"
 441 gdb_test "backtrace" \
 442         "\#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.*" \
 443         "backtrace at nested call level 3"
 444 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
 445         "The program being debugged stopped while.*" \
 446         "stop at nested call level 4"
 447 gdb_test "backtrace" \
 448         "\#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.*" \
 449         "backtrace at nested call level 4"
 450 gdb_test "finish" "Value returned is .* = 100" \
 451         "Finish from nested call level 4"
 452 gdb_test "backtrace" \
 453         "\#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.*" \
 454         "backtrace after finish from nested call level 4"
 455 gdb_test "finish" "Value returned is .* = 110" \
 456         "Finish from nested call level 3"
 457 gdb_test "backtrace" \
 458         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 459         "backtrace after finish from nested call level 3"
 460 gdb_test "finish" "Value returned is .* = 9" \
 461         "Finish from nested call level 2"
 462 gdb_test "backtrace" \
 463         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 464         "backtrace after finish from nested call level 2"
 465 gdb_test "finish" "Value returned is .* = 5" \
 466         "Finish from nested call level 1"
 467 gdb_test "backtrace" "\#0  main .*" \
 468         "backtrace after finish from nested call level 1"
 469
 470 set new_reg_content [fetch_all_registers \
 471                      "register contents after nested call dummies"]
 472 if {$old_reg_content == $new_reg_content} then {
 473     pass "nested call dummies preserve register contents"
 474 } else {
 475     fail "nested call dummies preserve register contents"
 476 }
 477
 478 # GDB should not crash by internal error on $sp underflow during the inferior
 479 # call.  It is OK it will stop on some: Cannot access memory at address 0x$hex.
 480
 481 if {![target_info exists gdb,nosignals] && ![istarget "*-*-uclinux*"]} {
 482     gdb_test {set $old_sp = $sp}
 483
 484     gdb_test {set $sp = 0}
 485     gdb_test "call doubleit (1)" "" "sp == 0: call doubleit (1)"
 486
 487     gdb_test {set $sp = -1}
 488     gdb_test "call doubleit (1)" "" "sp == -1: call doubleit (1)"
 489
 490     gdb_test {set $sp = $old_sp}
 491 }