1# Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2# 2004, 2007 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# Please email any bugs, comments, and/or additions to this file to: 18# bug-gdb@prep.ai.mit.edu 19 20# This file was written by Fred Fish. (fnf@cygnus.com) 21# and modified by Bob Manson. (manson@cygnus.com) 22 23if $tracelevel then { 24 strace $tracelevel 25} 26 27set prms_id 0 28set bug_id 0 29 30set testfile "callfuncs" 31set srcfile ${testfile}.c 32set binfile ${objdir}/${subdir}/${testfile} 33 34if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { 35 untested callfuncs.exp 36 return -1 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 gdb_test "p t_double_int(99.0, 1)" " = 0" 167 gdb_test "p t_double_int(99.0, 99)" " = 1" 168 gdb_test "p t_int_double(99, 1.0)" " = 0" 169 gdb_test "p t_int_double(99, 99.0)" " = 1" 170 } 171 172 gdb_test "p t_string_values(string_val2,string_val1)" " = 0" 173 gdb_test "p t_string_values(string_val1,string_val2)" " = 1" 174 gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1" 175 gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1" 176 gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1" 177 178 gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0" 179 gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1" 180 gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1" 181 gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1" 182 gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1" 183 184 gdb_test "p doubleit(4)" " = 8" 185 gdb_test "p add(4,5)" " = 9" 186 gdb_test "p t_func_values(func_val2,func_val1)" " = 0" 187 gdb_test "p t_func_values(func_val1,func_val2)" " = 1" 188 189 # GDB currently screws up the passing of function parameters for 190 # ABIs that use function descriptors. Instead of passing the 191 # address of te function descriptor, GDB passes the address of the 192 # function body. This results in the called function treating the 193 # first few instructions of the function proper as a descriptor 194 # and attempting a jump through that (a totally random address). 195 setup_kfail "rs6000*-*-aix*" gdb/1457 196 setup_kfail "powerpc*-*-aix*" gdb/1457 197 setup_kfail hppa*-*-hpux* gdb/1457 198 gdb_test "p t_func_values(add,func_val2)" " = 1" 199 setup_kfail "rs6000*-*-aix*" gdb/1457 200 setup_kfail "powerpc*-*-aix*" gdb/1457 201 setup_kfail hppa*-*-hpux* gdb/1457 202 gdb_test "p t_func_values(func_val1,doubleit)" " = 1" 203 setup_kfail "rs6000*-*-aix*" gdb/1457 204 setup_kfail "powerpc*-*-aix*" gdb/1457 205 setup_kfail hppa*-*-hpux* gdb/1457 206 gdb_test "p t_call_add(add,3,4)" " = 7" 207 gdb_test "p t_call_add(func_val1,3,4)" " = 7" 208 209 gdb_test "p t_enum_value1(enumval1)" " = 1" 210 gdb_test "p t_enum_value1(enum_val1)" " = 1" 211 gdb_test "p t_enum_value1(enum_val2)" " = 0" 212 213 gdb_test "p t_enum_value2(enumval2)" " = 1" 214 gdb_test "p t_enum_value2(enum_val2)" " = 1" 215 gdb_test "p t_enum_value2(enum_val1)" " = 0" 216 217 gdb_test "p sum_args(1,{2})" " = 2" 218 gdb_test "p sum_args(2,{2,3})" " = 5" 219 gdb_test "p sum_args(3,{2,3,4})" " = 9" 220 gdb_test "p sum_args(4,{2,3,4,5})" " = 14" 221 222 gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55" 223 224 gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1" 225 226 gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \ 227 "call inferior func with struct - returns char" 228 gdb_test "p t_structs_s(struct_val1)" "= 87" \ 229 "call inferior func with struct - returns short" 230 gdb_test "p t_structs_i(struct_val1)" "= 76" \ 231 "call inferior func with struct - returns int" 232 gdb_test "p t_structs_l(struct_val1)" "= 51" \ 233 "call inferior func with struct - returns long" 234 gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \ 235 "call inferior func with struct - returns float" 236 gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \ 237 "call inferior func with struct - returns double" 238 gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \ 239 "call inferior func with struct - returns char *" 240} 241 242# Procedure to get current content of all registers. 243proc fetch_all_registers {test} { 244 global gdb_prompt 245 246 set all_registers_lines {} 247 set bad -1 248 if {[gdb_test_multiple "info all-registers" $test { 249 -re "info all-registers\[\r\n\]+" { 250 exp_continue 251 } 252 -ex "The program has no registers now" { 253 set bad 1 254 exp_continue 255 } 256 -re "^bspstore\[ \t\]+\[^\r\n\]+\[\r\n\]+" { 257 if [istarget "ia64-*-*"] { 258 # Filter out bspstore which is specially tied to bsp, 259 # giving spurious differences. 260 } else { 261 lappend all_registers_lines $expect_out(0,string) 262 } 263 exp_continue 264 } 265 -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\[\r\n\]+" { 266 lappend all_registers_lines $expect_out(0,string) 267 exp_continue 268 } 269 -re ".*$gdb_prompt $" { 270 incr bad 271 } 272 -re "^\[^\r\n\]+\[\r\n\]+" { 273 if {!$bad} { 274 warning "Unrecognized output: $expect_out(0,string)" 275 set bad 1 276 } 277 exp_continue 278 } 279 }] != 0} { 280 return {} 281 } 282 283 if {$bad} { 284 fail $test 285 return {} 286 } 287 288 pass $test 289 return $all_registers_lines 290} 291 292 293# Start with a fresh gdb. 294 295gdb_exit 296gdb_start 297gdb_reinitialize_dir $srcdir/$subdir 298gdb_load ${binfile} 299 300gdb_test "set print sevenbit-strings" "" 301gdb_test "set print address off" "" 302gdb_test "set width 0" "" 303 304if { $hp_aCC_compiler } { 305 # Do not set language explicitly to 'C'. This will cause aCC 306 # tests to fail because promotion rules are different. Just let 307 # the language be set to the default. 308 309 if { ![runto_main] } { 310 gdb_suppress_tests; 311 } 312 313 # However, turn off overload-resolution for aCC. Having it on causes 314 # a lot of failures. 315 316 gdb_test "set overload-resolution 0" ".*" 317} else { 318 if { ![set_lang_c] } { 319 gdb_suppress_tests; 320 } else { 321 if { ![runto_main] } { 322 gdb_suppress_tests; 323 } 324 } 325} 326 327get_debug_format 328 329# Make sure that malloc gets called and that the floating point unit 330# is initialized via a call to t_double_values. 331gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \ 332 "next to t_double_values" 333gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \ 334 "next to t_structs_c" 335 336# Save all register contents. 337set old_reg_content [fetch_all_registers "retrieve original register contents"] 338 339# Perform function calls. 340do_function_calls 341 342# Check if all registers still have the same value. 343set new_reg_content [fetch_all_registers \ 344 "register contents after gdb function calls"] 345if {$old_reg_content == $new_reg_content} then { 346 pass "gdb function calls preserve register contents" 347} else { 348 set old_reg_content $new_reg_content 349 fail "gdb function calls preserve register contents" 350} 351 352# Set breakpoint at a function we will call from gdb. 353gdb_breakpoint add 354 355# Call function (causing a breakpoint hit in the call dummy) and do a continue, 356# make sure we are back at main and still have the same register contents. 357gdb_test "print add(4,5)" \ 358 "The program being debugged stopped while.*" \ 359 "stop at breakpoint in call dummy function" 360gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint" 361if ![gdb_test "bt 2" \ 362 "#0 main.*" \ 363 "bt after continuing from call dummy breakpoint"] then { 364 set new_reg_content [fetch_all_registers \ 365 "register contents after stop in call dummy"] 366 if {$old_reg_content == $new_reg_content} then { 367 pass "continue after stop in call dummy preserves register contents" 368 } else { 369 fail "continue after stop in call dummy preserves register contents" 370 } 371} 372 373# Call function (causing a breakpoint hit in the call dummy) and do a finish, 374# make sure we are back at main and still have the same register contents. 375gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 376 "call function causing a breakpoint then do a finish" 377gdb_test "finish" \ 378 "Value returned is .* = 9" \ 379 "finish from call dummy breakpoint returns correct value" 380if ![gdb_test "bt 2" \ 381 "#0 main.*" \ 382 "bt after finishing from call dummy breakpoint"] then { 383 set new_reg_content [fetch_all_registers \ 384 "register contents after finish in call dummy"] 385 if {$old_reg_content == $new_reg_content} then { 386 pass "finish after stop in call dummy preserves register contents" 387 } else { 388 fail "finish after stop in call dummy preserves register contents" 389 } 390} 391 392# Call function (causing a breakpoint hit in the call dummy) and do a return 393# with a value, make sure we are back at main with the same register contents. 394gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 395 "call function causing a breakpoint and then do a return" 396if ![gdb_test "return 7" \ 397 "#0 main.*" \ 398 "back at main after return from call dummy breakpoint" \ 399 "Make add return now. .y or n.*" \ 400 "y"] then { 401 set new_reg_content [fetch_all_registers \ 402 "register contents after return in call dummy"] 403 if {$old_reg_content == $new_reg_content} then { 404 pass "return after stop in call dummy preserves register contents" 405 } else { 406 fail "return after stop in call dummy preserves register contents" 407 } 408} 409 410# Call function (causing a breakpoint hit in the call dummy), and 411# call another function from the call dummy frame (thereby setting up 412# several nested call dummy frames). Test that backtrace and finish 413# work when several call dummies are nested. 414gdb_breakpoint sum10 415gdb_breakpoint t_small_values 416gdb_test "print add(2,3)" "The program being debugged stopped while.*" \ 417 "stop at nested call level 1" 418gdb_test "backtrace" \ 419 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 420 "backtrace at nested call level 1" 421gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 422 "stop at nested call level 2" 423gdb_test "backtrace" \ 424 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 425 "backtrace at nested call level 2" 426gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \ 427 "The program being debugged stopped while.*" \ 428 "stop at nested call level 3" 429gdb_test "backtrace" \ 430 "\#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.*" \ 431 "backtrace at nested call level 3" 432gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \ 433 "The program being debugged stopped while.*" \ 434 "stop at nested call level 4" 435gdb_test "backtrace" \ 436 "\#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.*" \ 437 "backtrace at nested call level 4" 438gdb_test "finish" "Value returned is .* = 100" \ 439 "Finish from nested call level 4" 440gdb_test "backtrace" \ 441 "\#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.*" \ 442 "backtrace after finish from nested call level 4" 443gdb_test "finish" "Value returned is .* = 110" \ 444 "Finish from nested call level 3" 445gdb_test "backtrace" \ 446 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 447 "backtrace after finish from nested call level 3" 448gdb_test "finish" "Value returned is .* = 9" \ 449 "Finish from nested call level 2" 450gdb_test "backtrace" \ 451 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 452 "backtrace after finish from nested call level 2" 453gdb_test "finish" "Value returned is .* = 5" \ 454 "Finish from nested call level 1" 455gdb_test "backtrace" "\#0 main .*" \ 456 "backtrace after finish from nested call level 1" 457 458set new_reg_content [fetch_all_registers \ 459 "register contents after nested call dummies"] 460if {$old_reg_content == $new_reg_content} then { 461 pass "nested call dummies preserve register contents" 462} else { 463 fail "nested call dummies preserve register contents" 464} 465 466return 0 467 468