1# Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2# 2003, 2004 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 24if $tracelevel then { 25 strace $tracelevel 26} 27 28set prms_id 0 29set bug_id 0 30 31set testfile "callfuncs" 32set srcfile ${testfile}.c 33set binfile ${objdir}/${subdir}/${testfile} 34 35if { [gdb_compile "${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 42if [get_compiler_info ${binfile}] { 43 return -1; 44} 45 46if {$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. 54if [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 63proc 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 96proc do_function_calls {} { 97 global prototypes 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 { ! [test_compiler_info gcc-*-*] } then { 152 setup_xfail "alpha-dec-osf2*" "i*86-*-sysv4*" 5318 153 } 154 } 155 156 gdb_test "p t_float_values2(3.14159,float_val2)" " = 1" 157 158 gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55" 159 160 gdb_test "p t_double_values(0.0,0.0)" " = 0" 161 gdb_test "p t_double_values(45.654,-67.66)" " = 1" 162 gdb_test "p t_double_values(double_val1,double_val2)" " = 1" 163 gdb_test "p t_double_values(45.654,double_val2)" " = 1" 164 gdb_test "p t_double_values(double_val1,-67.66)" " = 1" 165 } 166 167 gdb_test "p t_string_values(string_val2,string_val1)" " = 0" 168 gdb_test "p t_string_values(string_val1,string_val2)" " = 1" 169 gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1" 170 gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1" 171 gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1" 172 173 gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0" 174 gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1" 175 gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1" 176 gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1" 177 gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1" 178 179 gdb_test "p doubleit(4)" " = 8" 180 gdb_test "p add(4,5)" " = 9" 181 gdb_test "p t_func_values(func_val2,func_val1)" " = 0" 182 gdb_test "p t_func_values(func_val1,func_val2)" " = 1" 183 184 # GDB currently screws up the passing of function parameters for 185 # ABIs that use function descriptors. Instead of passing the 186 # address of te function descriptor, GDB passes the address of the 187 # function body. This results in the called function treating the 188 # first few instructions of the function proper as a descriptor 189 # and attempting a jump through that (a totally random address). 190 setup_kfail "rs6000*-*-aix*" gdb/1457 191 setup_kfail "powerpc*-*-aix*" gdb/1457 192 setup_kfail "powerpc64*-*-*" gdb/1457 193 setup_kfail hppa*-*-hpux* gdb/1457 194 gdb_test "p t_func_values(add,func_val2)" " = 1" 195 setup_kfail "rs6000*-*-aix*" gdb/1457 196 setup_kfail "powerpc*-*-aix*" gdb/1457 197 setup_kfail "powerpc64*-*-*" gdb/1457 198 setup_kfail hppa*-*-hpux* gdb/1457 199 gdb_test "p t_func_values(func_val1,doubleit)" " = 1" 200 setup_kfail "rs6000*-*-aix*" gdb/1457 201 setup_kfail "powerpc*-*-aix*" gdb/1457 202 setup_kfail "powerpc64*-*-*" gdb/1457 203 setup_kfail hppa*-*-hpux* gdb/1457 204 gdb_test "p t_call_add(add,3,4)" " = 7" 205 gdb_test "p t_call_add(func_val1,3,4)" " = 7" 206 207 gdb_test "p t_enum_value1(enumval1)" " = 1" 208 gdb_test "p t_enum_value1(enum_val1)" " = 1" 209 gdb_test "p t_enum_value1(enum_val2)" " = 0" 210 211 gdb_test "p t_enum_value2(enumval2)" " = 1" 212 gdb_test "p t_enum_value2(enum_val2)" " = 1" 213 gdb_test "p t_enum_value2(enum_val1)" " = 0" 214 215 gdb_test "p sum_args(1,{2})" " = 2" 216 gdb_test "p sum_args(2,{2,3})" " = 5" 217 gdb_test "p sum_args(3,{2,3,4})" " = 9" 218 gdb_test "p sum_args(4,{2,3,4,5})" " = 14" 219 220 gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55" 221 222 gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1" 223 224 gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \ 225 "call inferior func with struct - returns char" 226 gdb_test "p t_structs_s(struct_val1)" "= 87" \ 227 "call inferior func with struct - returns short" 228 gdb_test "p t_structs_i(struct_val1)" "= 76" \ 229 "call inferior func with struct - returns int" 230 gdb_test "p t_structs_l(struct_val1)" "= 51" \ 231 "call inferior func with struct - returns long" 232 gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \ 233 "call inferior func with struct - returns float" 234 gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \ 235 "call inferior func with struct - returns double" 236 gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \ 237 "call inferior func with struct - returns char *" 238} 239 240# Procedure to get current content of all registers. 241global all_registers_content 242set all_registers_content "" 243proc do_get_all_registers { } { 244 global gdb_prompt 245 global expect_out 246 global all_registers_content 247 248 set all_registers_content "" 249 send_gdb "info all-registers\n" 250 gdb_expect { 251 -re "info all-registers\r\n(.*)$gdb_prompt $" { 252 set all_registers_content $expect_out(1,string) 253 } 254 default {} 255 } 256} 257 258# Start with a fresh gdb. 259 260gdb_exit 261gdb_start 262gdb_reinitialize_dir $srcdir/$subdir 263gdb_load ${binfile} 264 265gdb_test "set print sevenbit-strings" "" 266gdb_test "set print address off" "" 267gdb_test "set width 0" "" 268 269if { $hp_aCC_compiler } { 270 # Do not set language explicitly to 'C'. This will cause aCC 271 # tests to fail because promotion rules are different. Just let 272 # the language be set to the default. 273 274 if { ![runto_main] } { 275 gdb_suppress_tests; 276 } 277 278 # However, turn off overload-resolution for aCC. Having it on causes 279 # a lot of failures. 280 281 gdb_test "set overload-resolution 0" ".*" 282} else { 283 if { ![set_lang_c] } { 284 gdb_suppress_tests; 285 } else { 286 if { ![runto_main] } { 287 gdb_suppress_tests; 288 } 289 } 290} 291 292get_debug_format 293 294# Make sure that malloc gets called and that the floating point unit 295# is initialized via a call to t_double_values. 296gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \ 297 "next to t_double_values" 298gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \ 299 "next to t_structs_c" 300 301# Save all register contents. 302do_get_all_registers 303set old_reg_content $all_registers_content 304 305# Perform function calls. 306do_function_calls 307 308# Check if all registers still have the same value. 309do_get_all_registers 310set new_reg_content $all_registers_content 311if ![string compare $old_reg_content $new_reg_content] then { 312 pass "gdb function calls preserve register contents" 313} else { 314 set old_reg_content $all_registers_content 315 fail "gdb function calls preserve register contents" 316} 317 318# Set breakpoint at a function we will call from gdb. 319gdb_breakpoint add 320 321# Call function (causing a breakpoint hit in the call dummy) and do a continue, 322# make sure we are back at main and still have the same register contents. 323gdb_test "print add(4,5)" \ 324 "The program being debugged stopped while.*" \ 325 "stop at breakpoint in call dummy function" 326gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint" 327if ![gdb_test "bt 2" \ 328 "#0 main.*" \ 329 "bt after continuing from call dummy breakpoint"] then { 330 do_get_all_registers 331 set new_reg_content $all_registers_content 332 if ![string compare $old_reg_content $new_reg_content] then { 333 pass "continue after stop in call dummy preserves register contents" 334 } else { 335 fail "continue after stop in call dummy preserves register contents" 336 } 337} 338 339# Call function (causing a breakpoint hit in the call dummy) and do a finish, 340# make sure we are back at main and still have the same register contents. 341gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 342 "call function causing a breakpoint then do a finish" 343gdb_test "finish" \ 344 "Value returned is .* = 9" \ 345 "finish from call dummy breakpoint returns correct value" 346if ![gdb_test "bt 2" \ 347 "#0 main.*" \ 348 "bt after finishing from call dummy breakpoint"] then { 349 do_get_all_registers 350 set new_reg_content $all_registers_content 351 if ![string compare $old_reg_content $new_reg_content] then { 352 pass "finish after stop in call dummy preserves register contents" 353 } else { 354 fail "finish after stop in call dummy preserves register contents" 355 } 356} 357 358# Call function (causing a breakpoint hit in the call dummy) and do a return 359# with a value, make sure we are back at main with the same register contents. 360gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 361 "call function causing a breakpoint and then do a return" 362if ![gdb_test "return 7" \ 363 "#0 main.*" \ 364 "back at main after return from call dummy breakpoint" \ 365 "Make add return now. .y or n.*" \ 366 "y"] then { 367 do_get_all_registers 368 set new_reg_content $all_registers_content 369 if ![string compare $old_reg_content $new_reg_content] then { 370 pass "return after stop in call dummy preserves register contents" 371 } else { 372 fail "return after stop in call dummy preserves register contents" 373 } 374} 375 376# Call function (causing a breakpoint hit in the call dummy), and 377# call another function from the call dummy frame (thereby setting up 378# several nested call dummy frames). Test that backtrace and finish 379# work when several call dummies are nested. 380gdb_breakpoint sum10 381gdb_breakpoint t_small_values 382gdb_test "print add(2,3)" "The program being debugged stopped while.*" \ 383 "stop at nested call level 1" 384gdb_test "backtrace" \ 385 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 386 "backtrace at nested call level 1" 387gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 388 "stop at nested call level 2" 389gdb_test "backtrace" \ 390 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 391 "backtrace at nested call level 2" 392gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \ 393 "The program being debugged stopped while.*" \ 394 "stop at nested call level 3" 395gdb_test "backtrace" \ 396 "\#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.*" \ 397 "backtrace at nested call level 3" 398gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \ 399 "The program being debugged stopped while.*" \ 400 "stop at nested call level 4" 401gdb_test "backtrace" \ 402 "\#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.*" \ 403 "backtrace at nested call level 4" 404gdb_test "finish" "Value returned is .* = 100" \ 405 "Finish from nested call level 4" 406gdb_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 after finish from nested call level 4" 409gdb_test "finish" "Value returned is .* = 110" \ 410 "Finish from nested call level 3" 411gdb_test "backtrace" \ 412 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 413 "backtrace after finish from nested call level 3" 414gdb_test "finish" "Value returned is .* = 9" \ 415 "Finish from nested call level 2" 416gdb_test "backtrace" \ 417 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 418 "backtrace after finish from nested call level 2" 419gdb_test "finish" "Value returned is .* = 5" \ 420 "Finish from nested call level 1" 421gdb_test "backtrace" "\#0 main .*" \ 422 "backtrace after finish from nested call level 1" 423 424do_get_all_registers 425set new_reg_content $all_registers_content 426if ![string compare $old_reg_content $new_reg_content] then { 427 pass "nested call dummies preserve register contents" 428} else { 429 fail "nested call dummies preserve register contents" 430} 431 432return 0 433 434