gdb/testsuite/gdb.base/callfuncs.exp

   1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
   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 # The a29k can't call functions, so don't even bother with this test.
  53 if [target_info exists gdb,cannot_call_functions] {
  54     setup_xfail "*-*-*" 2416
  55     fail "This target can not call functions"
  56     continue
  57 }
  58
  59 # Set the current language to C.  This counts as a test.  If it
  60 # fails, then we skip the other tests.
  61
  62 proc set_lang_c {} {
  63     global gdb_prompt
  64
  65     send_gdb "set language c\n"
  66     gdb_expect {
  67         -re ".*$gdb_prompt $" {}
  68         timeout { fail "set language c (timeout)" ; return 0; }
  69     }
  70
  71     send_gdb "show language\n"
  72     gdb_expect {
  73         -re ".* source language is \"c\".*$gdb_prompt $" {
  74             pass "set language to \"c\""
  75             return 1
  76         }
  77         -re ".*$gdb_prompt $" {
  78             fail "setting language to \"c\""
  79             return 0
  80         }
  81         timeout {
  82             fail "can't show language (timeout)"
  83             return 0
  84         }
  85     }
  86 }
  87
  88 # FIXME:  Before calling this proc, we should probably verify that
  89 # we can call inferior functions and get a valid integral value
  90 # returned.
  91 # Note that it is OK to check for 0 or 1 as the returned values, because C
  92 # specifies that the numeric value of a relational or logical expression
  93 # (computed in the inferior) is 1 for true and 0 for false.
  94
  95 proc do_function_calls {} {
  96     global prototypes
  97     global gcc_compiled
  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 $prototypes then {
 150             setup_xfail "sparc-*-*" "mips*-*-*" 5318
 151             if {!$gcc_compiled} then {
 152                 setup_xfail "alpha-dec-osf2*" "i*86-*-sysv4*" 5318
 153             }
 154         }
 155         gdb_test "p t_float_values2(3.14159,float_val2)" " = 1"
 156         gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
 157
 158         gdb_test "p t_double_values(0.0,0.0)" " = 0"
 159         gdb_test "p t_double_values(45.654,-67.66)" " = 1"
 160         gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
 161         gdb_test "p t_double_values(45.654,double_val2)" " = 1"
 162         gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
 163     }
 164
 165     gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
 166     gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
 167     gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
 168     gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
 169     gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
 170
 171     gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
 172     gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
 173     gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
 174     gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
 175     gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
 176
 177     gdb_test "p doubleit(4)" " = 8"
 178     gdb_test "p add(4,5)" " = 9"
 179     gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
 180     gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
 181
 182     # On the rs6000, we need to pass the address of the trampoline routine,
 183     # not the address of add itself.  I don't know how to go from add to
 184     # the address of the trampoline.  Similar problems exist on the HPPA,
 185     # and in fact can present an unsolvable problem as the stubs may not
 186     # even exist in the user's program.  We've slightly recoded t_func_values
 187     # to avoid such problems in the common case.  This may or may not help
 188     # the RS6000.
 189     setup_xfail "rs6000*-*-*"
 190     setup_xfail "powerpc*-*-*"
 191     if {![istarget hppa*-*-hpux*]} then {
 192         gdb_test "p t_func_values(add,func_val2)" " = 1"
 193     }
 194
 195     setup_xfail "rs6000*-*-*"
 196     setup_xfail "powerpc*-*-*"
 197     if {![istarget hppa*-*-hpux*]} then {
 198         gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
 199     }
 200
 201     setup_xfail "rs6000*-*-*"
 202     setup_xfail "powerpc*-*-*"
 203     if {![istarget hppa*-*-hpux*]} then {
 204         gdb_test "p t_call_add(add,3,4)" " = 7"
 205     }
 206     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 207
 208     gdb_test "p t_enum_value1(enumval1)" " = 1"
 209     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 210     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 211
 212     gdb_test "p t_enum_value2(enumval2)" " = 1"
 213     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 214     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 215
 216     gdb_test "p sum_args(1,{2})" " = 2"
 217     gdb_test "p sum_args(2,{2,3})" " = 5"
 218     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 219     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 220
 221     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 222
 223     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 224
 225     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 226         "call inferior func with struct - returns char"
 227     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 228         "call inferior func with struct -  returns short"
 229     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 230         "call inferior func with struct - returns int"
 231     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 232         "call inferior func with struct - returns long"
 233     gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 234         "call inferior func with struct - returns float"
 235     gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 236         "call inferior func with struct - returns double"
 237     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 238         "call inferior func with struct - returns char *"
 239 }
 240
 241 # Procedure to get current content of all registers.
 242 global all_registers_content
 243 set all_registers_content ""
 244 proc do_get_all_registers { } {
 245     global gdb_prompt
 246     global expect_out
 247     global all_registers_content
 248
 249     set all_registers_content ""
 250     send_gdb "info all-registers\n"
 251     gdb_expect {
 252         -re "info all-registers\r\n(.*)$gdb_prompt $" {
 253             set all_registers_content $expect_out(1,string)
 254         }
 255         default {}
 256     }
 257 }
 258
 259 # Start with a fresh gdb.
 260
 261 gdb_exit
 262 gdb_start
 263 gdb_reinitialize_dir $srcdir/$subdir
 264 gdb_load ${binfile}
 265
 266 gdb_test "set print sevenbit-strings" ""
 267 gdb_test "set print address off" ""
 268 gdb_test "set width 0" ""
 269
 270 if { $hp_aCC_compiler } {
 271     # Do not set language explicitly to 'C'.  This will cause aCC
 272     # tests to fail because promotion rules are different.  Just let
 273     # the language be set to the default.
 274
 275     if { ![runto_main] } {
 276         gdb_suppress_tests;
 277     }
 278
 279     # However, turn off overload-resolution for aCC.  Having it on causes
 280     # a lot of failures.
 281
 282     gdb_test "set overload-resolution 0" ".*"
 283 } else {
 284     if { ![set_lang_c] } {
 285         gdb_suppress_tests;
 286     } else {
 287         if { ![runto_main] } {
 288             gdb_suppress_tests;
 289         }
 290     }
 291 }
 292
 293 # Make sure that malloc gets called and that the floating point unit
 294 # is initialized via a call to t_double_values.
 295 gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*"
 296 gdb_test "next" "t_structs_c\\(struct_val1\\);.*"
 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)" "The program being debugged stopped while.*" ""
 321 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 322 if ![gdb_test "bt 2" \
 323               "#0  main.*" \
 324               "bt after continuing from call dummy breakpoint"] then {
 325     do_get_all_registers
 326     set new_reg_content $all_registers_content
 327     if ![string compare $old_reg_content $new_reg_content] then {
 328         pass "continue after stop in call dummy preserves register contents"
 329     } else {
 330         fail "continue after stop in call dummy preserves register contents"
 331     }
 332 }
 333
 334 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 335 # make sure we are back at main and still have the same register contents.
 336 gdb_test "print add(4,5)" "The program being debugged stopped while.*" ""
 337 gdb_test "finish" \
 338          "Value returned is .* = 9" \
 339          "finish from call dummy breakpoint returns correct value"
 340 if ![gdb_test "bt 2" \
 341               "#0  main.*" \
 342               "bt after finishing from call dummy breakpoint"] then {
 343     do_get_all_registers
 344     set new_reg_content $all_registers_content
 345     if ![string compare $old_reg_content $new_reg_content] then {
 346         pass "finish after stop in call dummy preserves register contents"
 347     } else {
 348         fail "finish after stop in call dummy preserves register contents"
 349     }
 350 }
 351
 352 # Call function (causing a breakpoint hit in the call dummy) and do a return
 353 # with a value, make sure we are back at main with the same register contents.
 354 gdb_test "print add(4,5)" "The program being debugged stopped while.*" ""
 355 if ![gdb_test "return 7" \
 356               "#0  main.*" \
 357               "back at main after return from call dummy breakpoint" \
 358               "Make add return now. .y or n.*" \
 359               "y"] then {
 360     do_get_all_registers
 361     set new_reg_content $all_registers_content
 362     if ![string compare $old_reg_content $new_reg_content] then {
 363         pass "return after stop in call dummy preserves register contents"
 364     } else {
 365         fail "return after stop in call dummy preserves register contents"
 366     }
 367 }
 368
 369 return 0