1# Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2# 2004, 2007, 2008, 2009, 2010, 2011 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# This file was written by Fred Fish. (fnf@cygnus.com) 18# and modified by Bob Manson. (manson@cygnus.com) 19 20if $tracelevel then { 21 strace $tracelevel 22} 23 24set testfile "callfuncs" 25set srcfile ${testfile}.c 26set binfile ${objdir}/${subdir}/${testfile} 27 28if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { 29 untested callfuncs.exp 30 return -1 31} 32 33# Create and source the file that provides information about the compiler 34# used to compile the test case. 35 36if [get_compiler_info ${binfile}] { 37 return -1; 38} 39 40if {$hp_aCC_compiler} { 41 set prototypes 1 42} else { 43 set prototypes 0 44} 45 46# Some targets can't do function calls, so don't even bother with this 47# test. 48if [target_info exists gdb,cannot_call_functions] { 49 setup_xfail "*-*-*" 2416 50 fail "This target can not call functions" 51 continue 52} 53 54# FIXME: Before calling this proc, we should probably verify that 55# we can call inferior functions and get a valid integral value 56# returned. 57# Note that it is OK to check for 0 or 1 as the returned values, because C 58# specifies that the numeric value of a relational or logical expression 59# (computed in the inferior) is 1 for true and 0 for false. 60 61proc do_function_calls {} { 62 global prototypes 63 global gdb_prompt 64 65 # We need to up this because this can be really slow on some boards. 66 set timeout 60; 67 68 gdb_test "p t_char_values(0,0)" " = 0" 69 gdb_test "p t_char_values('a','b')" " = 1" 70 gdb_test "p t_char_values(char_val1,char_val2)" " = 1" 71 gdb_test "p t_char_values('a',char_val2)" " = 1" 72 gdb_test "p t_char_values(char_val1,'b')" " = 1" 73 74 gdb_test "p t_short_values(0,0)" " = 0" 75 gdb_test "p t_short_values(10,-23)" " = 1" 76 gdb_test "p t_short_values(short_val1,short_val2)" " = 1" 77 gdb_test "p t_short_values(10,short_val2)" " = 1" 78 gdb_test "p t_short_values(short_val1,-23)" " = 1" 79 80 gdb_test "p t_int_values(0,0)" " = 0" 81 gdb_test "p t_int_values(87,-26)" " = 1" 82 gdb_test "p t_int_values(int_val1,int_val2)" " = 1" 83 gdb_test "p t_int_values(87,int_val2)" " = 1" 84 gdb_test "p t_int_values(int_val1,-26)" " = 1" 85 86 gdb_test "p t_long_values(0,0)" " = 0" 87 gdb_test "p t_long_values(789,-321)" " = 1" 88 gdb_test "p t_long_values(long_val1,long_val2)" " = 1" 89 gdb_test "p t_long_values(789,long_val2)" " = 1" 90 gdb_test "p t_long_values(long_val1,-321)" " = 1" 91 92 if ![target_info exists gdb,skip_float_tests] { 93 gdb_test "p t_float_values(0.0,0.0)" " = 0" 94 95 # These next four tests fail on the mn10300. 96 # The first value is passed in regs, the other in memory. 97 # Gcc emits different stabs for the two parameters; the first is 98 # claimed to be a float, the second a double. 99 # dbxout.c in gcc claims this is the desired behavior. 100 # These tests also fail for RealView, because GDB can not tell that 101 # the function is unprototyped. 102 setup_xfail "mn10300-*-*" 103 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 104 gdb_test "p t_float_values(3.14159,-2.3765)" " = 1" 105 setup_xfail "mn10300-*-*" 106 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 107 gdb_test "p t_float_values(float_val1,float_val2)" " = 1" 108 setup_xfail "mn10300-*-*" 109 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 110 gdb_test "p t_float_values(3.14159,float_val2)" " = 1" 111 setup_xfail "mn10300-*-*" 112 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" } 113 gdb_test "p t_float_values(float_val1,-2.3765)" " = 1" 114 115 # Test passing of arguments which might not be widened. 116 gdb_test "p t_float_values2(0.0,0.0)" " = 0" 117 118 # Although PR 5318 mentions SunOS specifically, this seems 119 # to be a generic problem on quite a few platforms. 120 if $prototypes then { 121 setup_xfail "sparc-*-*" "mips*-*-*" 5318 122 if { ! [test_compiler_info gcc-*-*] } then { 123 setup_xfail "alpha-dec-osf2*" "i*86-*-sysv4*" 5318 124 } 125 } 126 127 gdb_test "p t_float_values2(3.14159,float_val2)" " = 1" 128 129 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." 130 131 gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55" 132 133 gdb_test "p t_double_values(0.0,0.0)" " = 0" 134 gdb_test "p t_double_values(45.654,-67.66)" " = 1" 135 gdb_test "p t_double_values(double_val1,double_val2)" " = 1" 136 gdb_test "p t_double_values(45.654,double_val2)" " = 1" 137 gdb_test "p t_double_values(double_val1,-67.66)" " = 1" 138 139 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." 140 141 gdb_test "p t_double_int(99.0, 1)" " = 0" 142 gdb_test "p t_double_int(99.0, 99)" " = 1" 143 gdb_test "p t_int_double(99, 1.0)" " = 0" 144 gdb_test "p t_int_double(99, 99.0)" " = 1" 145 } 146 147 gdb_test "p t_string_values(string_val2,string_val1)" " = 0" 148 gdb_test "p t_string_values(string_val1,string_val2)" " = 1" 149 gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1" 150 gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1" 151 gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1" 152 153 gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0" 154 gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1" 155 gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1" 156 gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1" 157 gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1" 158 159 gdb_test "p doubleit(4)" " = 8" 160 gdb_test "p add(4,5)" " = 9" 161 gdb_test "p t_func_values(func_val2,func_val1)" " = 0" 162 gdb_test "p t_func_values(func_val1,func_val2)" " = 1" 163 164 gdb_test "p function_struct.func(5)" " = 10" 165 gdb_test "p function_struct_ptr->func(10)" " = 20" 166 167 # GDB currently screws up the passing of function parameters for 168 # ABIs that use function descriptors. Instead of passing the 169 # address of te function descriptor, GDB passes the address of the 170 # function body. This results in the called function treating the 171 # first few instructions of the function proper as a descriptor 172 # and attempting a jump through that (a totally random address). 173 setup_kfail gdb/1457 "rs6000*-*-aix*" 174 setup_kfail gdb/1457 "powerpc*-*-aix*" 175 setup_kfail gdb/1457 hppa*-*-hpux* 176 gdb_test "p t_func_values(add,func_val2)" " = 1" 177 setup_kfail gdb/1457 "rs6000*-*-aix*" 178 setup_kfail gdb/1457 "powerpc*-*-aix*" 179 setup_kfail gdb/1457 hppa*-*-hpux* 180 gdb_test "p t_func_values(func_val1,doubleit)" " = 1" 181 setup_kfail gdb/1457 "rs6000*-*-aix*" 182 setup_kfail gdb/1457 "powerpc*-*-aix*" 183 setup_kfail gdb/1457 hppa*-*-hpux* 184 gdb_test "p t_call_add(add,3,4)" " = 7" 185 gdb_test "p t_call_add(func_val1,3,4)" " = 7" 186 187 gdb_test "p t_enum_value1(enumval1)" " = 1" 188 gdb_test "p t_enum_value1(enum_val1)" " = 1" 189 gdb_test "p t_enum_value1(enum_val2)" " = 0" 190 191 gdb_test "p t_enum_value2(enumval2)" " = 1" 192 gdb_test "p t_enum_value2(enum_val2)" " = 1" 193 gdb_test "p t_enum_value2(enum_val1)" " = 0" 194 195 gdb_test "p sum_args(1,{2})" " = 2" 196 gdb_test "p sum_args(2,{2,3})" " = 5" 197 gdb_test "p sum_args(3,{2,3,4})" " = 9" 198 gdb_test "p sum_args(4,{2,3,4,5})" " = 14" 199 200 gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55" 201 202 gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1" 203 204 gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \ 205 "call inferior func with struct - returns char" 206 gdb_test "p t_structs_s(struct_val1)" "= 87" \ 207 "call inferior func with struct - returns short" 208 gdb_test "p t_structs_i(struct_val1)" "= 76" \ 209 "call inferior func with struct - returns int" 210 gdb_test "p t_structs_l(struct_val1)" "= 51" \ 211 "call inferior func with struct - returns long" 212 213 if ![target_info exists gdb,skip_float_tests] { 214 gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \ 215 "call inferior func with struct - returns float" 216 gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \ 217 "call inferior func with struct - returns double" 218 } 219 220 gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?\"foo\"" \ 221 "call inferior func with struct - returns char *" 222} 223 224# Procedure to get current content of all registers. 225proc fetch_all_registers {test} { 226 global gdb_prompt 227 228 set all_registers_lines {} 229 set bad -1 230 # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer 231 # corrupting the next matches. 232 if {[gdb_test_multiple "info all-registers" $test { 233 -re "info all-registers\r\n" { 234 exp_continue 235 } 236 -ex "The program has no registers now" { 237 set bad 1 238 exp_continue 239 } 240 -re "^bspstore\[ \t\]+\[^\r\n\]+\r\n" { 241 if [istarget "ia64-*-*"] { 242 # Filter out bspstore which is specially tied to bsp, 243 # giving spurious differences. 244 } else { 245 lappend all_registers_lines $expect_out(0,string) 246 } 247 exp_continue 248 } 249 -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" { 250 lappend all_registers_lines $expect_out(0,string) 251 exp_continue 252 } 253 -re "$gdb_prompt $" { 254 incr bad 255 } 256 -re "^\[^\r\n\]+\r\n" { 257 if {!$bad} { 258 warning "Unrecognized output: $expect_out(0,string)" 259 set bad 1 260 } 261 exp_continue 262 } 263 }] != 0} { 264 return {} 265 } 266 267 if {$bad} { 268 fail $test 269 return {} 270 } 271 272 pass $test 273 return $all_registers_lines 274} 275 276 277# Start with a fresh gdb. 278 279gdb_exit 280gdb_start 281gdb_reinitialize_dir $srcdir/$subdir 282gdb_load ${binfile} 283 284gdb_test_no_output "set print sevenbit-strings" 285gdb_test_no_output "set print address off" 286gdb_test_no_output "set width 0" 287 288if { $hp_aCC_compiler } { 289 # Do not set language explicitly to 'C'. This will cause aCC 290 # tests to fail because promotion rules are different. Just let 291 # the language be set to the default. 292 293 if { ![runto_main] } { 294 gdb_suppress_tests; 295 } 296 297 # However, turn off overload-resolution for aCC. Having it on causes 298 # a lot of failures. 299 300 gdb_test_no_output "set overload-resolution 0" 301} else { 302 gdb_test_no_output "set language c" 303 if { ![runto_main] } { 304 gdb_suppress_tests; 305 } 306} 307 308get_debug_format 309 310# Make sure that malloc gets called and that the floating point unit 311# is initialized via a call to t_double_values. 312gdb_test "next" "t_double_values\\(double_val1, double_val2\\);.*" \ 313 "next to t_double_values" 314gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \ 315 "next to t_structs_c" 316 317# Save all register contents. 318set old_reg_content [fetch_all_registers "retrieve original register contents"] 319 320# Perform function calls. 321do_function_calls 322 323# Check if all registers still have the same value. 324set new_reg_content [fetch_all_registers \ 325 "register contents after gdb function calls"] 326if {$old_reg_content == $new_reg_content} then { 327 pass "gdb function calls preserve register contents" 328} else { 329 set old_reg_content $new_reg_content 330 fail "gdb function calls preserve register contents" 331} 332 333# Set breakpoint at a function we will call from gdb. 334gdb_breakpoint add 335 336# Call function (causing a breakpoint hit in the call dummy) and do a continue, 337# make sure we are back at main and still have the same register contents. 338gdb_test "print add(4,5)" \ 339 "The program being debugged stopped while.*" \ 340 "stop at breakpoint in call dummy function" 341gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint" 342if ![gdb_test "bt 2" \ 343 "#0 main.*" \ 344 "bt after continuing from call dummy breakpoint"] then { 345 set new_reg_content [fetch_all_registers \ 346 "register contents after stop in call dummy"] 347 if {$old_reg_content == $new_reg_content} then { 348 pass "continue after stop in call dummy preserves register contents" 349 } else { 350 fail "continue after stop in call dummy preserves register contents" 351 } 352} 353 354# Call function (causing a breakpoint hit in the call dummy) and do a finish, 355# make sure we are back at main and still have the same register contents. 356gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 357 "call function causing a breakpoint then do a finish" 358gdb_test "finish" \ 359 "Value returned is .* = 9" \ 360 "finish from call dummy breakpoint returns correct value" 361if ![gdb_test "bt 2" \ 362 "#0 main.*" \ 363 "bt after finishing from call dummy breakpoint"] then { 364 set new_reg_content [fetch_all_registers \ 365 "register contents after finish in call dummy"] 366 if {$old_reg_content == $new_reg_content} then { 367 pass "finish after stop in call dummy preserves register contents" 368 } else { 369 fail "finish after stop in call dummy preserves register contents" 370 } 371} 372 373# Call function (causing a breakpoint hit in the call dummy) and do a return 374# with a value, make sure we are back at main with the same register contents. 375gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 376 "call function causing a breakpoint and then do a return" 377if ![gdb_test "return 7" \ 378 "#0 main.*" \ 379 "back at main after return from call dummy breakpoint" \ 380 "Make add return now. .y or n.*" \ 381 "y"] then { 382 set new_reg_content [fetch_all_registers \ 383 "register contents after return in call dummy"] 384 if {$old_reg_content == $new_reg_content} then { 385 pass "return after stop in call dummy preserves register contents" 386 } else { 387 fail "return after stop in call dummy preserves register contents" 388 } 389} 390 391# Call function (causing a breakpoint hit in the call dummy), and 392# call another function from the call dummy frame (thereby setting up 393# several nested call dummy frames). Test that backtrace and finish 394# work when several call dummies are nested. 395gdb_breakpoint sum10 396gdb_breakpoint t_small_values 397gdb_test "print add(2,3)" "The program being debugged stopped while.*" \ 398 "stop at nested call level 1" 399gdb_test "backtrace" \ 400 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 401 "backtrace at nested call level 1" 402gdb_test "print add(4,5)" "The program being debugged stopped while.*" \ 403 "stop at nested call level 2" 404gdb_test "backtrace" \ 405 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 406 "backtrace at nested call level 2" 407gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \ 408 "The program being debugged stopped while.*" \ 409 "stop at nested call level 3" 410gdb_test "backtrace" \ 411 "\#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.*" \ 412 "backtrace at nested call level 3" 413gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \ 414 "The program being debugged stopped while.*" \ 415 "stop at nested call level 4" 416gdb_test "backtrace" \ 417 "\#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.*" \ 418 "backtrace at nested call level 4" 419gdb_test "finish" "Value returned is .* = 100" \ 420 "Finish from nested call level 4" 421gdb_test "backtrace" \ 422 "\#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.*" \ 423 "backtrace after finish from nested call level 4" 424gdb_test "finish" "Value returned is .* = 110" \ 425 "Finish from nested call level 3" 426gdb_test "backtrace" \ 427 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \ 428 "backtrace after finish from nested call level 3" 429gdb_test "finish" "Value returned is .* = 9" \ 430 "Finish from nested call level 2" 431gdb_test "backtrace" \ 432 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \ 433 "backtrace after finish from nested call level 2" 434gdb_test "finish" "Value returned is .* = 5" \ 435 "Finish from nested call level 1" 436gdb_test "backtrace" "\#0 main .*" \ 437 "backtrace after finish from nested call level 1" 438 439set new_reg_content [fetch_all_registers \ 440 "register contents after nested call dummies"] 441if {$old_reg_content == $new_reg_content} then { 442 pass "nested call dummies preserve register contents" 443} else { 444 fail "nested call dummies preserve register contents" 445} 446 447# GDB should not crash by internal error on $sp underflow during the inferior 448# call. It is OK it will stop on some: Cannot access memory at address 0x$hex. 449 450if {![target_info exists gdb,nosignals] && ![istarget "*-*-uclinux*"]} { 451 gdb_test {set $old_sp = $sp} 452 453 gdb_test {set $sp = 0} 454 gdb_test "call doubleit (1)" ".*" "sp == 0: call doubleit (1)" 455 456 gdb_test {set $sp = -1} 457 gdb_test "call doubleit (1)" ".*" "sp == -1: call doubleit (1)" 458 459 gdb_test {set $sp = $old_sp} 460} 461