1# Copyright 1992-2020 Free Software Foundation, Inc. 2 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15 16# This file was written by Fred Fish. (fnf@cygnus.com) 17# and modified by Bob Manson. (manson@cygnus.com) 18 19standard_testfile 20 21set compile_flags {debug} 22if [support_complex_tests] { 23 lappend compile_flags "additional_flags=-DTEST_COMPLEX" 24} 25 26# Some targets can't do function calls, so don't even bother with this 27# test. 28if [target_info exists gdb,cannot_call_functions] { 29 unsupported "this target can not call functions" 30 continue 31} 32 33set skip_float_test [gdb_skip_float_test] 34 35# FIXME: Before calling this proc, we should probably verify that 36# we can call inferior functions and get a valid integral value 37# returned. 38# Note that it is OK to check for 0 or 1 as the returned values, because C 39# specifies that the numeric value of a relational or logical expression 40# (computed in the inferior) is 1 for true and 0 for false. 41 42proc do_function_calls {prototypes} { 43 global gdb_prompt skip_float_test 44 45 # We need to up this because this can be really slow on some boards. 46 set timeout 60 47 48 # If any of these calls segv we don't want to affect subsequent tests. 49 # E.g., we want to ensure register values are restored. 50 gdb_test_no_output "set unwindonsignal on" 51 52 gdb_test "p t_char_values(0,0)" " = 0" 53 gdb_test "p t_char_values('a','b')" " = 1" 54 gdb_test "p t_char_values(char_val1,char_val2)" " = 1" 55 gdb_test "p t_char_values('a',char_val2)" " = 1" 56 gdb_test "p t_char_values(char_val1,'b')" " = 1" 57 58 gdb_test "p t_short_values(0,0)" " = 0" 59 gdb_test "p t_short_values(10,-23)" " = 1" 60 gdb_test "p t_short_values(short_val1,short_val2)" " = 1" 61 gdb_test "p t_short_values(10,short_val2)" " = 1" 62 gdb_test "p t_short_values(short_val1,-23)" " = 1" 63 64 gdb_test "p t_int_values(0,0)" " = 0" 65 gdb_test "p t_int_values(87,-26)" " = 1" 66 gdb_test "p t_int_values(int_val1,int_val2)" " = 1" 67 gdb_test "p t_int_values(87,int_val2)" " = 1" 68 gdb_test "p t_int_values(int_val1,-26)" " = 1" 69 70 gdb_test "p t_long_values(0,0)" " = 0" 71 gdb_test "p t_long_values(789,-321)" " = 1" 72 gdb_test "p t_long_values(long_val1,long_val2)" " = 1" 73 gdb_test "p t_long_values(789,long_val2)" " = 1" 74 gdb_test "p t_long_values(long_val1,-321)" " = 1" 75 76 if {!$skip_float_test} { 77 gdb_test "p t_float_values(0.0,0.0)" " = 0" 78 79 # These next four tests fail on the mn10300. 80 # The first value is passed in regs, the other in memory. 81 # Gcc emits different stabs for the two parameters; the first is 82 # claimed to be a float, the second a double. 83 # dbxout.c in gcc claims this is the desired behavior. 84 # These tests also fail for RealView, because GDB can not tell that 85 # the function is unprototyped. 86 setup_xfail "mn10300-*-*" 87 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 88 gdb_test "p t_float_values(3.14159,-2.3765)" " = 1" 89 setup_xfail "mn10300-*-*" 90 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 91 gdb_test "p t_float_values(float_val1,float_val2)" " = 1" 92 setup_xfail "mn10300-*-*" 93 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 94 gdb_test "p t_float_values(3.14159,float_val2)" " = 1" 95 setup_xfail "mn10300-*-*" 96 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 97 gdb_test "p t_float_values(float_val1,-2.3765)" " = 1" 98 # Same, via unprototyped function pointer (t_float_values is 99 # always unprototyped). 100 gdb_test "p ((int (*) ()) t_float_values)(float_val1,-2.3765)" " = 1" 101 102 # Test passing of arguments which might not be widened. 103 gdb_test "p t_float_values2(0.0,0.0)" " = 0" 104 # Same, via function pointer. 105 if {$prototypes} { 106 gdb_test "p ((int (*) (float, float)) t_float_values2)(0.0,0.0)" " = 0" 107 } else { 108 gdb_test "p ((int (*) ()) t_float_values2)(0.0,0.0)" " = 0" 109 } 110 111 gdb_test "p t_float_values2(3.14159,float_val2)" " = 1" 112 if {$prototypes} { 113 gdb_test "p ((int (*) (float, float)) t_float_values2)(3.14159,float_val2)" " = 1" 114 } else { 115 gdb_test "p ((int (*) ()) t_float_values2)(3.14159,float_val2)" " = 1" 116 } 117 118 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." 119 120 gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55" 121 122 gdb_test "p t_double_values(0.0,0.0)" " = 0" 123 gdb_test "p t_double_values(45.654,-67.66)" " = 1" 124 gdb_test "p t_double_values(double_val1,double_val2)" " = 1" 125 gdb_test "p t_double_values(45.654,double_val2)" " = 1" 126 gdb_test "p t_double_values(double_val1,-67.66)" " = 1" 127 128 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." 129 130 gdb_test "p t_double_int(99.0, 1)" " = 0" 131 gdb_test "p t_double_int(99.0, 99)" " = 1" 132 gdb_test "p t_int_double(99, 1.0)" " = 0" 133 gdb_test "p t_int_double(99, 99.0)" " = 1" 134 } 135 136 if [support_complex_tests] { 137 gdb_test "p t_float_complex_values(fc1, fc2)" " = 1" 138 gdb_test "p t_float_complex_values(fc3, fc4)" " = 0" 139 140 gdb_test "p t_float_complex_many_args(fc1, fc2, fc3, fc4, fc1, fc2, fc3, fc4, fc1, fc2, fc3, fc4, fc1, fc2, fc3, fc4)" " = 1" 141 gdb_test "p t_float_complex_many_args(fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1, fc1)" " = 0" 142 143 gdb_test "p t_double_complex_values(dc1, dc2)" " = 1" 144 gdb_test "p t_double_complex_values(dc3, dc4)" " = 0" 145 146 gdb_test "p t_double_complex_many_args(dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4)" " = 1" 147 gdb_test "p t_double_complex_many_args(dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1)" " = 0" 148 149 gdb_test "p t_long_double_complex_values(ldc1, ldc2)" " = 1" 150 gdb_test "p t_long_double_complex_values(ldc3, ldc4)" " = 0" 151 gdb_test "p t_long_double_complex_many_args(ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4)" " = 1" 152 gdb_test "p t_long_double_complex_many_args(ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1,ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1)" " = 0" 153 } 154 155 gdb_test "p t_string_values(string_val2,string_val1)" " = 0" 156 gdb_test "p t_string_values(string_val1,string_val2)" " = 1" 157 gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1" 158 gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1" 159 gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1" 160 161 gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0" 162 gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1" 163 gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1" 164 gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1" 165 gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1" 166 167 gdb_test "p doubleit(4)" " = 8" 168 gdb_test "p add(4,5)" " = 9" 169 gdb_test "p t_func_values(func_val2,func_val1)" " = 0" 170 gdb_test "p t_func_values(func_val1,func_val2)" " = 1" 171 172 gdb_test "p function_struct.func(5)" " = 10" 173 gdb_test "p function_struct_ptr->func(10)" " = 20" 174 175 # GDB currently screws up the passing of function parameters for 176 # ABIs that use function descriptors. Instead of passing the 177 # address of te function descriptor, GDB passes the address of the 178 # function body. This results in the called function treating the 179 # first few instructions of the function proper as a descriptor 180 # and attempting a jump through that (a totally random address). 181 setup_kfail gdb/1457 "rs6000*-*-aix*" 182 setup_kfail gdb/1457 "powerpc*-*-aix*" 183 gdb_test "p t_func_values(add,func_val2)" " = 1" 184 setup_kfail gdb/1457 "rs6000*-*-aix*" 185 setup_kfail gdb/1457 "powerpc*-*-aix*" 186 gdb_test "p t_func_values(func_val1,doubleit)" " = 1" 187 setup_kfail gdb/1457 "rs6000*-*-aix*" 188 setup_kfail gdb/1457 "powerpc*-*-aix*" 189 gdb_test "p t_call_add(add,3,4)" " = 7" 190 gdb_test "p t_call_add(func_val1,3,4)" " = 7" 191 192 gdb_test "p t_enum_value1(enumval1)" " = 1" 193 gdb_test "p t_enum_value1(enum_val1)" " = 1" 194 gdb_test "p t_enum_value1(enum_val2)" " = 0" 195 196 gdb_test "p t_enum_value2(enumval2)" " = 1" 197 gdb_test "p t_enum_value2(enum_val2)" " = 1" 198 gdb_test "p t_enum_value2(enum_val1)" " = 0" 199 200 gdb_test "p sum_args(1,{2})" " = 2" 201 gdb_test "p sum_args(2,{2,3})" " = 5" 202 gdb_test "p sum_args(3,{2,3,4})" " = 9" 203 gdb_test "p sum_args(4,{2,3,4,5})" " = 14" 204 205 gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55" 206 207 gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1" 208 209 gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \ 210 "call inferior func with struct - returns char" 211 gdb_test "p t_structs_s(struct_val1)" "= 87" \ 212 "call inferior func with struct - returns short" 213 gdb_test "p t_structs_i(struct_val1)" "= 76" \ 214 "call inferior func with struct - returns int" 215 gdb_test "p t_structs_l(struct_val1)" "= 51" \ 216 "call inferior func with struct - returns long" 217 218 if {!$skip_float_test} { 219 gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \ 220 "call inferior func with struct - returns float" 221 gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \ 222 "call inferior func with struct - returns double" 223 } 224 225 if [support_complex_tests] { 226 227 gdb_test "p t_structs_fc(struct_val1)" ".*= 3 \\+ 3i" \ 228 "call inferior func with struct - returns float _Complex" 229 230 gdb_test "p t_structs_dc(struct_val1)" ".*= 4 \\+ 4i" \ 231 "call inferior func with struct - returns double _Complex" 232 233 gdb_test "p t_structs_ldc(struct_val1)" "= 5 \\+ 5i" \ 234 "call inferior func with struct - returns long double _Complex" 235 } 236 237 gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?<.*buf.*> \"foo\"" \ 238 "call inferior func with struct - returns char *" 239 240 # Restore default value. 241 gdb_test_no_output "set unwindonsignal off" 242} 243 244# Procedure to get current content of all registers. 245proc fetch_all_registers {test} { 246 global gdb_prompt 247 248 set all_registers_lines {} 249 set bad -1 250 # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer 251 # corrupting the next matches. 252 if {[gdb_test_multiple "info all-registers" $test { 253 -re "info all-registers\r\n" { 254 exp_continue 255 } 256 -ex "The program has no registers now" { 257 set bad 1 258 exp_continue 259 } 260 -re "^bspstore\[ \t\]+\[^\r\n\]+\r\n" { 261 if [istarget "ia64-*-*"] { 262 # Filter out bspstore which is specially tied to bsp, 263 # giving spurious differences. 264 } else { 265 lappend all_registers_lines $expect_out(0,string) 266 } 267 exp_continue 268 } 269 -re "^pstate\[ \t\]+\[^\r\n\]+\r\n" { 270 if [istarget "sparc64-*-linux-gnu"] { 271 # Filter out the pstate register, since in sparc64 272 # targets the Linux kernel disables pstate.PEF when 273 # returning from traps, giving spurious differences. 274 } else { 275 lappend all_registers_lines $expect_out(0,string) 276 } 277 exp_continue 278 } 279 -re "^last_break\[ \t\]+\[^\r\n\]+\r\n" { 280 if [istarget "s390*-*-*"] { 281 # Filter out last_break which is read-only, 282 # giving spurious differences. 283 } else { 284 lappend all_registers_lines $expect_out(0,string) 285 } 286 exp_continue 287 } 288 -re "^\(?:cycle\|instret\)\[ \t\]+\[^\r\n\]+\r\n" { 289 if [istarget "riscv*-*-*"] { 290 # Filter out the cycle counter and instructions 291 # retired counter CSRs which are read-only, giving 292 # spurious differences. 293 } else { 294 lappend all_registers_lines $expect_out(0,string) 295 } 296 exp_continue 297 } 298 -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" { 299 lappend all_registers_lines $expect_out(0,string) 300 exp_continue 301 } 302 -re "$gdb_prompt $" { 303 incr bad 304 } 305 -re "^\[^\r\n\]+\r\n" { 306 if {!$bad} { 307 warning "Unrecognized output: $expect_out(0,string)" 308 set bad 1 309 } 310 exp_continue 311 } 312 }] != 0} { 313 return {} 314 } 315 316 if {$bad} { 317 fail $test 318 return {} 319 } 320 321 pass $test 322 return $all_registers_lines 323} 324 325# Global used by RERUN_AND_PREPARE to make test names unique. 326set rerun_count 0 327 328proc rerun_and_prepare {} { 329 global rerun_count 330 331 incr rerun_count 332 with_test_prefix "rerun number ${rerun_count}" { 333 334 if { ![runto_main] } { 335 gdb_suppress_tests 336 } 337 338 gdb_test_no_output "set language c" 339 340 get_debug_format 341 342 # Make sure that malloc gets called and that the floating 343 # point unit is initialized via a call to t_double_values. 344 gdb_test "next" \ 345 "t_double_values\\(double_val1, double_val2\\);.*" \ 346 "next to t_double_values" 347 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \ 348 "next to t_structs_c" 349 } 350} 351 352proc perform_all_tests {prototypes} { 353 gdb_test_no_output "set print sevenbit-strings" 354 gdb_test_no_output "set print address off" 355 gdb_test_no_output "set width 0" 356 357 rerun_and_prepare 358 359 # Save all register contents. 360 set old_reg_content \ 361 [fetch_all_registers "retrieve original register contents 1"] 362 363 # Perform function calls. 364 do_function_calls $prototypes 365 366 # Check if all registers still have the same value. 367 set new_reg_content [fetch_all_registers \ 368 "register contents after gdb function calls"] 369 if {$old_reg_content == $new_reg_content} then { 370 pass "gdb function calls preserve register contents" 371 } else { 372 set old_reg_content $new_reg_content 373 fail "gdb function calls preserve register contents" 374 } 375 376 rerun_and_prepare 377 # Save all register contents. 378 set old_reg_content \ 379 [fetch_all_registers "retrieve original register contents 2"] 380 381 # Set breakpoint at a function we will call from gdb. 382 gdb_breakpoint add 383 384 # Call function (causing a breakpoint hit in the call dummy) and do a continue, 385 # make sure we are back at main and still have the same register contents. 386 gdb_test "print add(4,5)" \ 387 "The program being debugged stopped while.*" \ 388 "stop at breakpoint in call dummy function" 389 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint" 390 if ![gdb_test "bt 2" \ 391 "#0 main.*" \ 392 "bt after continuing from call dummy breakpoint"] then { 393 set new_reg_content [fetch_all_registers \ 394 "register contents after stop in call dummy"] 395 if {$old_reg_content == $new_reg_content} then { 396 pass "continue after stop in call dummy preserves register contents" 397 } else { 398 fail "continue after stop in call dummy preserves register contents" 399 } 400 } 401 402 rerun_and_prepare 403 # Set breakpoint at a function we will call from gdb. 404 gdb_breakpoint add 405 # Save all register contents. 406 set old_reg_content \ 407 [fetch_all_registers "retrieve original register contents 3"] 408 409 # Call function (causing a breakpoint hit in the call dummy) and do a finish, 410 # make sure we are back at main and still have the same register contents. 411 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 412 "call function causing a breakpoint then do a finish" 413 gdb_test "finish" \ 414 "Value returned is .* = 9" \ 415 "finish from call dummy breakpoint returns correct value" 416 if ![gdb_test "bt 2" \ 417 "#0 main.*" \ 418 "bt after finishing from call dummy breakpoint"] then { 419 set new_reg_content [fetch_all_registers \ 420 "register contents after finish in call dummy"] 421 if {$old_reg_content == $new_reg_content} then { 422 pass "finish after stop in call dummy preserves register contents" 423 } else { 424 fail "finish after stop in call dummy preserves register contents" 425 } 426 } 427 428 rerun_and_prepare 429 # Set breakpoint at a function we will call from gdb. 430 gdb_breakpoint add 431 # Save all register contents. 432 set old_reg_content \ 433 [fetch_all_registers "retrieve original register contents 4"] 434 435 # Call function (causing a breakpoint hit in the call dummy) and do a return 436 # with a value, make sure we are back at main with the same register contents. 437 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 438 "call function causing a breakpoint and then do a return" 439 if ![gdb_test "return 7" \ 440 "#0 main.*" \ 441 "back at main after return from call dummy breakpoint" \ 442 "Make add return now. .y or n.*" \ 443 "y"] then { 444 set new_reg_content [fetch_all_registers \ 445 "register contents after return in call dummy"] 446 if {$old_reg_content == $new_reg_content} then { 447 pass "return after stop in call dummy preserves register contents" 448 } else { 449 fail "return after stop in call dummy preserves register contents" 450 } 451 } 452 453 rerun_and_prepare 454 # Set breakpoint at a function we will call from gdb. 455 gdb_breakpoint add 456 set old_reg_content \ 457 [fetch_all_registers "retrieve original register contents 5"] 458 459 # Call function (causing a breakpoint hit in the call dummy), and 460 # call another function from the call dummy frame (thereby setting up 461 # several nested call dummy frames). Test that backtrace and finish 462 # work when several call dummies are nested. 463 gdb_breakpoint sum10 464 gdb_breakpoint t_small_values 465 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \ 466 "stop at nested call level 1" 467 gdb_test "backtrace" \ 468 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 469 "backtrace at nested call level 1" 470 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 471 "stop at nested call level 2" 472 gdb_test "backtrace" \ 473 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 474 "backtrace at nested call level 2" 475 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \ 476 "The program being debugged stopped while.*" \ 477 "stop at nested call level 3" 478 gdb_test "backtrace" \ 479 "\#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.*" \ 480 "backtrace at nested call level 3" 481 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \ 482 "The program being debugged stopped while.*" \ 483 "stop at nested call level 4" 484 gdb_test "backtrace" \ 485 "\#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.*" \ 486 "backtrace at nested call level 4" 487 gdb_test "finish" "Value returned is .* = 100" \ 488 "Finish from nested call level 4" 489 gdb_test "backtrace" \ 490 "\#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.*" \ 491 "backtrace after finish from nested call level 4" 492 gdb_test "finish" "Value returned is .* = 110" \ 493 "Finish from nested call level 3" 494 gdb_test "backtrace" \ 495 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 496 "backtrace after finish from nested call level 3" 497 gdb_test "finish" "Value returned is .* = 9" \ 498 "Finish from nested call level 2" 499 gdb_test "backtrace" \ 500 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 501 "backtrace after finish from nested call level 2" 502 gdb_test "finish" "Value returned is .* = 5" \ 503 "Finish from nested call level 1" 504 gdb_test "backtrace" "\#0 main .*" \ 505 "backtrace after finish from nested call level 1" 506 507 set new_reg_content [fetch_all_registers \ 508 "register contents after nested call dummies"] 509 if {$old_reg_content == $new_reg_content} then { 510 pass "nested call dummies preserve register contents" 511 } else { 512 fail "nested call dummies preserve register contents" 513 } 514 515 # GDB should not crash by internal error on $sp underflow during the inferior 516 # call. It is OK it will stop on some: Cannot access memory at address 0x$hex. 517 518 if {![target_info exists gdb,nosignals] && ![istarget "*-*-uclinux*"]} { 519 gdb_test {set $old_sp = $sp} 520 521 gdb_test {set $sp = 0} 522 gdb_test "call doubleit (1)" ".*" "sp == 0: call doubleit (1)" 523 524 gdb_test {set $sp = -1} 525 gdb_test "call doubleit (1)" ".*" "sp == -1: call doubleit (1)" 526 527 gdb_test {set $sp = $old_sp} 528 } 529 530 # Test function descriptor resolution - the separate debug info .opd section 531 # handling vs. local labels `.L'... as `Lcallfunc' starts with `L'. 532 533 gdb_test "print callfunc (Lcallfunc, 5)" " = 12" 534 535 # Regression test for function pointer cast. 536 gdb_test "print *((int *(*) (void)) voidfunc)()" " = 23" 537} 538 539# Perform all tests with and without function prototypes. 540 541if { ![prepare_for_testing "failed to prepare" $testfile $srcfile "$compile_flags additional_flags=-DPROTOTYPES"] } { 542 perform_all_tests 1 543} 544 545if { ![prepare_for_testing "failed to prepare" $testfile $srcfile "$compile_flags additional_flags=-DNO_PROTOTYPES"] } { 546 with_test_prefix "noproto" { 547 perform_all_tests 0 548 } 549} 550