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