gdb/testsuite/gdb.base/callfuncs.exp

   1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
   2 # 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 gcc_compiled
  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 $prototypes then {
 151             setup_xfail "sparc-*-*" "mips*-*-*" 5318
 152             if {!$gcc_compiled} 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     # On the rs6000, we need to pass the address of the trampoline routine,
 186     # not the address of add itself.  I don't know how to go from add to
 187     # the address of the trampoline.  Similar problems exist on the HPPA,
 188     # and in fact can present an unsolvable problem as the stubs may not
 189     # even exist in the user's program.  We've slightly recoded t_func_values
 190     # to avoid such problems in the common case.  This may or may not help
 191     # the RS6000.
 192     setup_xfail "rs6000*-*-*"
 193     setup_xfail "powerpc*-*-*"
 194     if {![istarget hppa*-*-hpux*]} then {
 195         gdb_test "p t_func_values(add,func_val2)" " = 1"
 196     }
 197
 198     setup_xfail "rs6000*-*-*"
 199     setup_xfail "powerpc*-*-*"
 200     if {![istarget hppa*-*-hpux*]} then {
 201         gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
 202     }
 203
 204     setup_xfail "rs6000*-*-*"
 205     setup_xfail "powerpc*-*-*"
 206     if {![istarget hppa*-*-hpux*]} then {
 207         gdb_test "p t_call_add(add,3,4)" " = 7"
 208     }
 209     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 210
 211     gdb_test "p t_enum_value1(enumval1)" " = 1"
 212     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 213     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 214
 215     gdb_test "p t_enum_value2(enumval2)" " = 1"
 216     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 217     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 218
 219     gdb_test "p sum_args(1,{2})" " = 2"
 220     gdb_test "p sum_args(2,{2,3})" " = 5"
 221     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 222     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 223
 224     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 225
 226     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 227
 228     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 229         "call inferior func with struct - returns char"
 230     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 231         "call inferior func with struct -  returns short"
 232     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 233         "call inferior func with struct - returns int"
 234     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 235         "call inferior func with struct - returns long"
 236     gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 237         "call inferior func with struct - returns float"
 238     gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 239         "call inferior func with struct - returns double"
 240     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 241         "call inferior func with struct - returns char *"
 242 }
 243
 244 # Procedure to get current content of all registers.
 245 global all_registers_content
 246 set all_registers_content ""
 247 proc do_get_all_registers { } {
 248     global gdb_prompt
 249     global expect_out
 250     global all_registers_content
 251
 252     set all_registers_content ""
 253     send_gdb "info all-registers\n"
 254     gdb_expect {
 255         -re "info all-registers\r\n(.*)$gdb_prompt $" {
 256             set all_registers_content $expect_out(1,string)
 257         }
 258         default {}
 259     }
 260 }
 261
 262 # Start with a fresh gdb.
 263
 264 gdb_exit
 265 gdb_start
 266 gdb_reinitialize_dir $srcdir/$subdir
 267 gdb_load ${binfile}
 268
 269 gdb_test "set print sevenbit-strings" ""
 270 gdb_test "set print address off" ""
 271 gdb_test "set width 0" ""
 272
 273 if { $hp_aCC_compiler } {
 274     # Do not set language explicitly to 'C'.  This will cause aCC
 275     # tests to fail because promotion rules are different.  Just let
 276     # the language be set to the default.
 277
 278     if { ![runto_main] } {
 279         gdb_suppress_tests;
 280     }
 281
 282     # However, turn off overload-resolution for aCC.  Having it on causes
 283     # a lot of failures.
 284
 285     gdb_test "set overload-resolution 0" ".*"
 286 } else {
 287     if { ![set_lang_c] } {
 288         gdb_suppress_tests;
 289     } else {
 290         if { ![runto_main] } {
 291             gdb_suppress_tests;
 292         }
 293     }
 294 }
 295
 296 get_debug_format
 297
 298 # Make sure that malloc gets called and that the floating point unit
 299 # is initialized via a call to t_double_values.
 300 gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \
 301   "next to t_double_values"
 302 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
 303   "next to t_structs_c"
 304
 305 # Save all register contents.
 306 do_get_all_registers
 307 set old_reg_content $all_registers_content
 308
 309 # Perform function calls.
 310 do_function_calls
 311
 312 # Check if all registers still have the same value.
 313 do_get_all_registers
 314 set new_reg_content $all_registers_content
 315 if ![string compare $old_reg_content $new_reg_content] then {
 316     pass "gdb function calls preserve register contents"
 317 } else {
 318     set old_reg_content $all_registers_content
 319     fail "gdb function calls preserve register contents"
 320 }
 321
 322 # Set breakpoint at a function we will call from gdb.
 323 gdb_breakpoint add
 324
 325 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
 326 # make sure we are back at main and still have the same register contents.
 327 gdb_test "print add(4,5)" \
 328         "The program being debugged stopped while.*" \
 329         "stop at breakpoint in call dummy function"
 330 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 331 if ![gdb_test "bt 2" \
 332               "#0  main.*" \
 333               "bt after continuing from call dummy breakpoint"] then {
 334     do_get_all_registers
 335     set new_reg_content $all_registers_content
 336     if ![string compare $old_reg_content $new_reg_content] then {
 337         pass "continue after stop in call dummy preserves register contents"
 338     } else {
 339         fail "continue after stop in call dummy preserves register contents"
 340     }
 341 }
 342
 343 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 344 # make sure we are back at main and still have the same register contents.
 345 gdb_test "print add(4,5)" "The program being debugged stopped while.*" ""
 346 gdb_test "finish" \
 347          "Value returned is .* = 9" \
 348          "finish from call dummy breakpoint returns correct value"
 349 if ![gdb_test "bt 2" \
 350               "#0  main.*" \
 351               "bt after finishing from call dummy breakpoint"] then {
 352     do_get_all_registers
 353     set new_reg_content $all_registers_content
 354     if ![string compare $old_reg_content $new_reg_content] then {
 355         pass "finish after stop in call dummy preserves register contents"
 356     } else {
 357         fail "finish after stop in call dummy preserves register contents"
 358     }
 359 }
 360
 361 # Call function (causing a breakpoint hit in the call dummy) and do a return
 362 # with a value, make sure we are back at main with the same register contents.
 363 gdb_test "print add(4,5)" "The program being debugged stopped while.*" ""
 364 if ![gdb_test "return 7" \
 365               "#0  main.*" \
 366               "back at main after return from call dummy breakpoint" \
 367               "Make add return now. .y or n.*" \
 368               "y"] then {
 369     do_get_all_registers
 370     set new_reg_content $all_registers_content
 371     if ![string compare $old_reg_content $new_reg_content] then {
 372         pass "return after stop in call dummy preserves register contents"
 373     } else {
 374         fail "return after stop in call dummy preserves register contents"
 375     }
 376 }
 377
 378 # Call function (causing a breakpoint hit in the call dummy), and
 379 # call another function from the call dummy frame (thereby setting up
 380 # several nested call dummy frames).  Test that backtrace and finish
 381 # work when several call dummies are nested.
 382 gdb_breakpoint sum10
 383 gdb_breakpoint t_small_values
 384 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
 385         "stop at nested call level 1"
 386 gdb_test "backtrace" \
 387         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 388         "backtrace at nested call level 1"
 389 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 390         "stop at nested call level 2"
 391 gdb_test "backtrace" \
 392         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 393         "backtrace at nested call level 2"
 394 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
 395         "The program being debugged stopped while.*" \
 396         "stop at nested call level 3"
 397 gdb_test "backtrace" \
 398         "\#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.*" \
 399         "backtrace at nested call level 3"
 400 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
 401         "The program being debugged stopped while.*" \
 402         "stop at nested call level 4"
 403 gdb_test "backtrace" \
 404         "\#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.*" \
 405         "backtrace at nested call level 4"
 406 gdb_test "finish" "Value returned is .* = 100" \
 407         "Finish from nested call level 4"
 408 gdb_test "backtrace" \
 409         "\#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.*" \
 410         "backtrace after finish from nested call level 4"
 411 gdb_test "finish" "Value returned is .* = 110" \
 412         "Finish from nested call level 3"
 413 gdb_test "backtrace" \
 414         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 415         "backtrace after finish from nested call level 3"
 416 gdb_test "finish" "Value returned is .* = 9" \
 417         "Finish from nested call level 2"
 418 gdb_test "backtrace" \
 419         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 420         "backtrace after finish from nested call level 2"
 421 gdb_test "finish" "Value returned is .* = 5" \
 422         "Finish from nested call level 1"
 423 gdb_test "backtrace" "\#0  main .*" \
 424         "backtrace after finish from nested call level 1"
 425
 426 do_get_all_registers
 427 set new_reg_content $all_registers_content
 428 if ![string compare $old_reg_content $new_reg_content] then {
 429     pass "nested call dummies preserve register contents"
 430 } else {
 431     fail "nested call dummies preserve register contents"
 432 }
 433
 434 return 0
 435