gdb/testsuite/gdb.base/callfuncs.exp

   1 # Copyright 1992, 1994-2004, 2007-2012 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
  19 if $tracelevel then {
  20         strace $tracelevel
  21 }
  22
  23 set testfile "callfuncs"
  24 set srcfile ${testfile}.c
  25 set binfile ${objdir}/${subdir}/${testfile}
  26
  27 set compile_flags {debug}
  28 if [support_complex_tests] {
  29     lappend compile_flags "additional_flags=-DTEST_COMPLEX"
  30 }
  31
  32 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable $compile_flags] != "" } {
  33      untested callfuncs.exp
  34      return -1
  35 }
  36
  37 # Create and source the file that provides information about the compiler
  38 # used to compile the test case.
  39
  40 if [get_compiler_info ${binfile}] {
  41     return -1;
  42 }
  43
  44 if {$hp_aCC_compiler} {
  45     set prototypes 1
  46 } else {
  47     set prototypes 0
  48 }
  49
  50 # Some targets can't do function calls, so don't even bother with this
  51 # test.
  52 if [target_info exists gdb,cannot_call_functions] {
  53     setup_xfail "*-*-*" 2416
  54     fail "This target can not call functions"
  55     continue
  56 }
  57
  58 # FIXME:  Before calling this proc, we should probably verify that
  59 # we can call inferior functions and get a valid integral value
  60 # returned.
  61 # Note that it is OK to check for 0 or 1 as the returned values, because C
  62 # specifies that the numeric value of a relational or logical expression
  63 # (computed in the inferior) is 1 for true and 0 for false.
  64
  65 proc do_function_calls {} {
  66     global prototypes
  67     global gdb_prompt
  68
  69     # We need to up this because this can be really slow on some boards.
  70     set timeout 60;
  71
  72     gdb_test "p t_char_values(0,0)" " = 0"
  73     gdb_test "p t_char_values('a','b')" " = 1"
  74     gdb_test "p t_char_values(char_val1,char_val2)" " = 1"
  75     gdb_test "p t_char_values('a',char_val2)" " = 1"
  76     gdb_test "p t_char_values(char_val1,'b')" " = 1"
  77
  78     gdb_test "p t_short_values(0,0)" " = 0"
  79     gdb_test "p t_short_values(10,-23)" " = 1"
  80     gdb_test "p t_short_values(short_val1,short_val2)" " = 1"
  81     gdb_test "p t_short_values(10,short_val2)" " = 1"
  82     gdb_test "p t_short_values(short_val1,-23)" " = 1"
  83
  84     gdb_test "p t_int_values(0,0)" " = 0"
  85     gdb_test "p t_int_values(87,-26)" " = 1"
  86     gdb_test "p t_int_values(int_val1,int_val2)" " = 1"
  87     gdb_test "p t_int_values(87,int_val2)" " = 1"
  88     gdb_test "p t_int_values(int_val1,-26)" " = 1"
  89
  90     gdb_test "p t_long_values(0,0)" " = 0"
  91     gdb_test "p t_long_values(789,-321)" " = 1"
  92     gdb_test "p t_long_values(long_val1,long_val2)" " = 1"
  93     gdb_test "p t_long_values(789,long_val2)" " = 1"
  94     gdb_test "p t_long_values(long_val1,-321)" " = 1"
  95
  96     if ![target_info exists gdb,skip_float_tests] {
  97         gdb_test "p t_float_values(0.0,0.0)" " = 0"
  98
  99         # These next four tests fail on the mn10300.
 100         # The first value is passed in regs, the other in memory.
 101         # Gcc emits different stabs for the two parameters; the first is
 102         # claimed to be a float, the second a double.
 103         # dbxout.c in gcc claims this is the desired behavior.
 104         # These tests also fail for RealView, because GDB can not tell that
 105         # the function is unprototyped.
 106         setup_xfail "mn10300-*-*"
 107         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 108         gdb_test "p t_float_values(3.14159,-2.3765)" " = 1"
 109         setup_xfail "mn10300-*-*"
 110         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 111         gdb_test "p t_float_values(float_val1,float_val2)" " = 1"
 112         setup_xfail "mn10300-*-*"
 113         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 114         gdb_test "p t_float_values(3.14159,float_val2)" " = 1"
 115         setup_xfail "mn10300-*-*"
 116         if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
 117         gdb_test "p t_float_values(float_val1,-2.3765)" " = 1"
 118
 119         # Test passing of arguments which might not be widened.
 120         gdb_test "p t_float_values2(0.0,0.0)" " = 0"
 121
 122         # Although PR 5318 mentions SunOS specifically, this seems
 123         # to be a generic problem on quite a few platforms.
 124         if $prototypes then {
 125             setup_xfail "sparc-*-*" "mips*-*-*" 5318
 126             if { ! [test_compiler_info gcc-*-*] } then {
 127                 setup_xfail "alpha-dec-osf2*" "i*86-*-sysv4*" 5318
 128             }
 129         }
 130
 131         gdb_test "p t_float_values2(3.14159,float_val2)" " = 1"
 132
 133         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."
 134
 135         gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
 136
 137         gdb_test "p t_double_values(0.0,0.0)" " = 0"
 138         gdb_test "p t_double_values(45.654,-67.66)" " = 1"
 139         gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
 140         gdb_test "p t_double_values(45.654,double_val2)" " = 1"
 141         gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
 142
 143         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."
 144
 145         gdb_test "p t_double_int(99.0, 1)" " = 0"
 146         gdb_test "p t_double_int(99.0, 99)" " = 1"
 147         gdb_test "p t_int_double(99, 1.0)" " = 0"
 148         gdb_test "p t_int_double(99, 99.0)" " = 1"
 149     }
 150
 151     if [support_complex_tests] {
 152         setup_kfail_for_target gdb/12798 "x86_64-*-*"
 153         gdb_test "p t_float_complex_values(fc1, fc2)" " = 1"
 154         gdb_test "p t_float_complex_values(fc3, fc4)" " = 0"
 155
 156         setup_kfail_for_target gdb/12800 "x86_64-*-*"
 157         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"
 158         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"
 159
 160         setup_kfail_for_target gdb/12798 "x86_64-*-*"
 161         gdb_test "p t_double_complex_values(dc1, dc2)" " = 1"
 162         gdb_test "p t_double_complex_values(dc3, dc4)" " = 0"
 163
 164         setup_kfail_for_target gdb/12800 "x86_64-*-*"
 165         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"
 166         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"
 167
 168         gdb_test "p t_long_double_complex_values(ldc1, ldc2)" " = 1"
 169         gdb_test "p t_long_double_complex_values(ldc3, ldc4)" " = 0"
 170         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"
 171         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"
 172     }
 173
 174     gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
 175     gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
 176     gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
 177     gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
 178     gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
 179
 180     gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
 181     gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
 182     gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
 183     gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
 184     gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
 185
 186     gdb_test "p doubleit(4)" " = 8"
 187     gdb_test "p add(4,5)" " = 9"
 188     gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
 189     gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
 190
 191     gdb_test "p function_struct.func(5)" " = 10"
 192     gdb_test "p function_struct_ptr->func(10)" " = 20"
 193
 194     # GDB currently screws up the passing of function parameters for
 195     # ABIs that use function descriptors.  Instead of passing the
 196     # address of te function descriptor, GDB passes the address of the
 197     # function body.  This results in the called function treating the
 198     # first few instructions of the function proper as a descriptor
 199     # and attempting a jump through that (a totally random address).
 200     setup_kfail gdb/1457 "rs6000*-*-aix*"
 201     setup_kfail gdb/1457 "powerpc*-*-aix*"
 202     setup_kfail gdb/1457 hppa*-*-hpux*
 203     gdb_test "p t_func_values(add,func_val2)" " = 1"
 204     setup_kfail gdb/1457 "rs6000*-*-aix*"
 205     setup_kfail gdb/1457 "powerpc*-*-aix*"
 206     setup_kfail gdb/1457 hppa*-*-hpux*
 207     gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
 208     setup_kfail gdb/1457 "rs6000*-*-aix*"
 209     setup_kfail gdb/1457 "powerpc*-*-aix*"
 210     setup_kfail gdb/1457 hppa*-*-hpux*
 211     gdb_test "p t_call_add(add,3,4)" " = 7"
 212     gdb_test "p t_call_add(func_val1,3,4)" " = 7"
 213
 214     gdb_test "p t_enum_value1(enumval1)" " = 1"
 215     gdb_test "p t_enum_value1(enum_val1)" " = 1"
 216     gdb_test "p t_enum_value1(enum_val2)" " = 0"
 217
 218     gdb_test "p t_enum_value2(enumval2)" " = 1"
 219     gdb_test "p t_enum_value2(enum_val2)" " = 1"
 220     gdb_test "p t_enum_value2(enum_val1)" " = 0"
 221
 222     gdb_test "p sum_args(1,{2})" " = 2"
 223     gdb_test "p sum_args(2,{2,3})" " = 5"
 224     gdb_test "p sum_args(3,{2,3,4})" " = 9"
 225     gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
 226
 227     gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
 228
 229     gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
 230
 231     gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
 232         "call inferior func with struct - returns char"
 233     gdb_test "p t_structs_s(struct_val1)" "= 87" \
 234         "call inferior func with struct - returns short"
 235     gdb_test "p t_structs_i(struct_val1)" "= 76" \
 236         "call inferior func with struct - returns int"
 237     gdb_test "p t_structs_l(struct_val1)" "= 51" \
 238         "call inferior func with struct - returns long"
 239
 240     if ![target_info exists gdb,skip_float_tests] {
 241         gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
 242             "call inferior func with struct - returns float"
 243         gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
 244             "call inferior func with struct - returns double"
 245     }
 246
 247     if [support_complex_tests] {
 248
 249         setup_kfail_for_target gdb/12796 "x86_64-*-*"
 250         gdb_test "p t_structs_fc(struct_val1)" ".*= 3 \\+ 3 \\* I" \
 251             "call inferior func with struct - returns float _Complex"
 252
 253         setup_kfail_for_target gdb/12783 "i?86-*-*"
 254         setup_kfail_for_target gdb/12796 "x86_64-*-*"
 255         gdb_test "p t_structs_dc(struct_val1)" ".*= 4 \\+ 4 \\* I" \
 256             "call inferior func with struct - returns double _Complex"
 257
 258         setup_kfail_for_target gdb/12783 "i?86-*-*"
 259         setup_kfail_for_target gdb/12796 "x86_64-*-*"
 260         gdb_test "p t_structs_ldc(struct_val1)" "= 5 \\+ 5 \\* I" \
 261             "call inferior func with struct - returns long double _Complex"
 262     }
 263
 264     gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \
 265         "call inferior func with struct - returns char *"
 266 }
 267
 268 # Procedure to get current content of all registers.
 269 proc fetch_all_registers {test} {
 270     global gdb_prompt
 271
 272     set all_registers_lines {}
 273     set bad -1
 274     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
 275     # corrupting the next matches.
 276     if {[gdb_test_multiple "info all-registers" $test {
 277         -re "info all-registers\r\n" {
 278             exp_continue
 279         }
 280         -ex "The program has no registers now" {
 281             set bad 1
 282             exp_continue
 283         }
 284         -re "^bspstore\[ \t\]+\[^\r\n\]+\r\n" {
 285             if [istarget "ia64-*-*"] {
 286                 # Filter out bspstore which is specially tied to bsp,
 287                 # giving spurious differences.
 288             } else {
 289                 lappend all_registers_lines $expect_out(0,string)
 290             }
 291             exp_continue
 292         }
 293         -re "^last_break\[ \t\]+\[^\r\n\]+\r\n" {
 294             if [istarget "s390*-*-*"] {
 295                 # Filter out last_break which is read-only,
 296                 # giving spurious differences.
 297             } else {
 298                 lappend all_registers_lines $expect_out(0,string)
 299             }
 300             exp_continue
 301         }
 302         -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" {
 303             lappend all_registers_lines $expect_out(0,string)
 304             exp_continue
 305         }
 306         -re "$gdb_prompt $" {
 307             incr bad
 308         }
 309         -re "^\[^\r\n\]+\r\n" {
 310             if {!$bad} {
 311                 warning "Unrecognized output: $expect_out(0,string)"
 312                 set bad 1
 313             }
 314             exp_continue
 315         }
 316     }] != 0} {
 317         return {}
 318     }
 319
 320     if {$bad} {
 321         fail $test
 322         return {}
 323     }
 324
 325     pass $test
 326     return $all_registers_lines
 327 }
 328
 329 proc rerun_and_prepare {} {
 330     global hp_aCC_compiler
 331
 332     if { $hp_aCC_compiler } {
 333         # Do not set language explicitly to 'C'.  This will cause aCC
 334         # tests to fail because promotion rules are different.  Just let
 335         # the language be set to the default.
 336
 337         if { ![runto_main] } {
 338             gdb_suppress_tests;
 339         }
 340
 341         # However, turn off overload-resolution for aCC.  Having it on causes
 342         # a lot of failures.
 343
 344         gdb_test_no_output "set overload-resolution 0"
 345     } else {
 346         if { ![runto_main] } {
 347             gdb_suppress_tests;
 348         }
 349         gdb_test_no_output "set language c"
 350     }
 351
 352     get_debug_format
 353
 354     # Make sure that malloc gets called and that the floating point unit
 355     # is initialized via a call to t_double_values.
 356     gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \
 357         "next to t_double_values"
 358     gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
 359         "next to t_structs_c"
 360 }
 361
 362
 363 # Start with a fresh gdb.
 364
 365 gdb_exit
 366 gdb_start
 367 gdb_reinitialize_dir $srcdir/$subdir
 368 gdb_load ${binfile}
 369
 370 gdb_test_no_output "set print sevenbit-strings"
 371 gdb_test_no_output "set print address off"
 372 gdb_test_no_output "set width 0"
 373
 374 rerun_and_prepare
 375
 376 # Save all register contents.
 377 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 378
 379 # Perform function calls.
 380 do_function_calls
 381
 382 # Check if all registers still have the same value.
 383 set new_reg_content [fetch_all_registers \
 384                      "register contents after gdb function calls"]
 385 if {$old_reg_content == $new_reg_content} then {
 386     pass "gdb function calls preserve register contents"
 387 } else {
 388     set old_reg_content $new_reg_content
 389     fail "gdb function calls preserve register contents"
 390 }
 391
 392 rerun_and_prepare
 393 # Save all register contents.
 394 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 395
 396 # Set breakpoint at a function we will call from gdb.
 397 gdb_breakpoint add
 398
 399 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
 400 # make sure we are back at main and still have the same register contents.
 401 gdb_test "print add(4,5)" \
 402         "The program being debugged stopped while.*" \
 403         "stop at breakpoint in call dummy function"
 404 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
 405 if ![gdb_test "bt 2" \
 406               "#0  main.*" \
 407               "bt after continuing from call dummy breakpoint"] then {
 408     set new_reg_content [fetch_all_registers \
 409                          "register contents after stop in call dummy"]
 410     if {$old_reg_content == $new_reg_content} then {
 411         pass "continue after stop in call dummy preserves register contents"
 412     } else {
 413         fail "continue after stop in call dummy preserves register contents"
 414     }
 415 }
 416
 417 rerun_and_prepare
 418 # Set breakpoint at a function we will call from gdb.
 419 gdb_breakpoint add
 420 # Save all register contents.
 421 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 422
 423 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
 424 # make sure we are back at main and still have the same register contents.
 425 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 426         "call function causing a breakpoint then do a finish"
 427 gdb_test "finish" \
 428          "Value returned is .* = 9" \
 429          "finish from call dummy breakpoint returns correct value"
 430 if ![gdb_test "bt 2" \
 431               "#0  main.*" \
 432               "bt after finishing from call dummy breakpoint"] then {
 433     set new_reg_content [fetch_all_registers \
 434                          "register contents after finish in call dummy"]
 435     if {$old_reg_content == $new_reg_content} then {
 436         pass "finish after stop in call dummy preserves register contents"
 437     } else {
 438         fail "finish after stop in call dummy preserves register contents"
 439     }
 440 }
 441
 442 rerun_and_prepare
 443 # Set breakpoint at a function we will call from gdb.
 444 gdb_breakpoint add
 445 # Save all register contents.
 446 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 447
 448 # Call function (causing a breakpoint hit in the call dummy) and do a return
 449 # with a value, make sure we are back at main with the same register contents.
 450 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 451         "call function causing a breakpoint and then do a return"
 452 if ![gdb_test "return 7" \
 453               "#0  main.*" \
 454               "back at main after return from call dummy breakpoint" \
 455               "Make add return now. .y or n.*" \
 456               "y"] then {
 457     set new_reg_content [fetch_all_registers \
 458                          "register contents after return in call dummy"]
 459     if {$old_reg_content == $new_reg_content} then {
 460         pass "return after stop in call dummy preserves register contents"
 461     } else {
 462         fail "return after stop in call dummy preserves register contents"
 463     }
 464 }
 465
 466 rerun_and_prepare
 467 # Set breakpoint at a function we will call from gdb.
 468 gdb_breakpoint add
 469 set old_reg_content [fetch_all_registers "retrieve original register contents"]
 470
 471 # Call function (causing a breakpoint hit in the call dummy), and
 472 # call another function from the call dummy frame (thereby setting up
 473 # several nested call dummy frames).  Test that backtrace and finish
 474 # work when several call dummies are nested.
 475 gdb_breakpoint sum10
 476 gdb_breakpoint t_small_values
 477 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
 478         "stop at nested call level 1"
 479 gdb_test "backtrace" \
 480         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 481         "backtrace at nested call level 1"
 482 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
 483         "stop at nested call level 2"
 484 gdb_test "backtrace" \
 485         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 486         "backtrace at nested call level 2"
 487 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
 488         "The program being debugged stopped while.*" \
 489         "stop at nested call level 3"
 490 gdb_test "backtrace" \
 491         "\#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.*" \
 492         "backtrace at nested call level 3"
 493 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
 494         "The program being debugged stopped while.*" \
 495         "stop at nested call level 4"
 496 gdb_test "backtrace" \
 497         "\#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.*" \
 498         "backtrace at nested call level 4"
 499 gdb_test "finish" "Value returned is .* = 100" \
 500         "Finish from nested call level 4"
 501 gdb_test "backtrace" \
 502         "\#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.*" \
 503         "backtrace after finish from nested call level 4"
 504 gdb_test "finish" "Value returned is .* = 110" \
 505         "Finish from nested call level 3"
 506 gdb_test "backtrace" \
 507         "\#0  add \\(a=4, b=5\\).*\#1  <function called from gdb>.*\#2  add \\(a=2, b=3\\).*\#3  <function called from gdb>.*\#4  main.*" \
 508         "backtrace after finish from nested call level 3"
 509 gdb_test "finish" "Value returned is .* = 9" \
 510         "Finish from nested call level 2"
 511 gdb_test "backtrace" \
 512         "\#0  add \\(a=2, b=3\\).*\#1  <function called from gdb>.*\#2  main.*" \
 513         "backtrace after finish from nested call level 2"
 514 gdb_test "finish" "Value returned is .* = 5" \
 515         "Finish from nested call level 1"
 516 gdb_test "backtrace" "\#0  main .*" \
 517         "backtrace after finish from nested call level 1"
 518
 519 set new_reg_content [fetch_all_registers \
 520                      "register contents after nested call dummies"]
 521 if {$old_reg_content == $new_reg_content} then {
 522     pass "nested call dummies preserve register contents"
 523 } else {
 524     fail "nested call dummies preserve register contents"
 525 }
 526
 527 # GDB should not crash by internal error on $sp underflow during the inferior
 528 # call.  It is OK it will stop on some: Cannot access memory at address 0x$hex.
 529
 530 if {![target_info exists gdb,nosignals] && ![istarget "*-*-uclinux*"]} {
 531     gdb_test {set $old_sp = $sp}
 532
 533     gdb_test {set $sp = 0}
 534     gdb_test "call doubleit (1)" ".*" "sp == 0: call doubleit (1)"
 535
 536     gdb_test {set $sp = -1}
 537     gdb_test "call doubleit (1)" ".*" "sp == -1: call doubleit (1)"
 538
 539     gdb_test {set $sp = $old_sp}
 540 }
 541
 542 # Test function descriptor resolution - the separate debug info .opd section
 543 # handling vs. local labels `.L'... as `Lcallfunc' starts with `L'.
 544
 545 gdb_test "print callfunc (Lcallfunc, 5)" " = 12"