1 # Copyright 1992-2024 Free Software Foundation, Inc.
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.
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.
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/>.
16 # This file was written by Fred Fish. (fnf@cygnus.com)
17 # and modified by Bob Manson. (manson@cygnus.com)
21 # We still want to test non-prototype functions for now, which is why
22 # we disable compilers warning about them.
23 set compile_flags {debug additional_flags=-Wno-deprecated-non-prototype}
24 if [support_complex_tests] {
25 lappend compile_flags "additional_flags=-DTEST_COMPLEX"
28 # Some targets can't do function calls, so don't even bother with this
30 require {!target_info exists gdb,cannot_call_functions}
32 set allow_float_test [allow_float_test]
34 # FIXME: Before calling this proc, we should probably verify that
35 # we can call inferior functions and get a valid integral value
37 # Note that it is OK to check for 0 or 1 as the returned values, because C
38 # specifies that the numeric value of a relational or logical expression
39 # (computed in the inferior) is 1 for true and 0 for false.
41 proc do_function_calls {prototypes} {
42 global gdb_prompt allow_float_test
44 # We need to up this because this can be really slow on some boards.
47 # If any of these calls segv we don't want to affect subsequent tests.
48 # E.g., we want to ensure register values are restored.
49 gdb_test_no_output "set unwind-on-signal on"
51 gdb_test "p t_char_values(0,0)" " = 0"
52 gdb_test "p t_char_values('a','b')" " = 1"
53 gdb_test "p t_char_values(char_val1,char_val2)" " = 1"
54 gdb_test "p t_char_values('a',char_val2)" " = 1"
55 gdb_test "p t_char_values(char_val1,'b')" " = 1"
57 gdb_test "p t_short_values(0,0)" " = 0"
58 gdb_test "p t_short_values(10,-23)" " = 1"
59 gdb_test "p t_short_values(short_val1,short_val2)" " = 1"
60 gdb_test "p t_short_values(10,short_val2)" " = 1"
61 gdb_test "p t_short_values(short_val1,-23)" " = 1"
63 gdb_test "p t_int_values(0,0)" " = 0"
64 gdb_test "p t_int_values(87,-26)" " = 1"
65 gdb_test "p t_int_values(int_val1,int_val2)" " = 1"
66 gdb_test "p t_int_values(87,int_val2)" " = 1"
67 gdb_test "p t_int_values(int_val1,-26)" " = 1"
69 gdb_test "p t_long_values(0,0)" " = 0"
70 gdb_test "p t_long_values(789,-321)" " = 1"
71 gdb_test "p t_long_values(long_val1,long_val2)" " = 1"
72 gdb_test "p t_long_values(789,long_val2)" " = 1"
73 gdb_test "p t_long_values(long_val1,-321)" " = 1"
75 if {$allow_float_test} {
76 gdb_test "p t_float_values(0.0,0.0)" " = 0"
78 # These next four tests fail on the mn10300.
79 # The first value is passed in regs, the other in memory.
80 # Gcc emits different stabs for the two parameters; the first is
81 # claimed to be a float, the second a double.
82 # dbxout.c in gcc claims this is the desired behavior.
83 # These tests also fail for RealView, because GDB can not tell that
84 # the function is unprototyped.
85 setup_xfail "mn10300-*-*"
86 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
87 gdb_test "p t_float_values(3.14159,-2.3765)" " = 1"
88 setup_xfail "mn10300-*-*"
89 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
90 gdb_test "p t_float_values(float_val1,float_val2)" " = 1"
91 setup_xfail "mn10300-*-*"
92 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
93 gdb_test "p t_float_values(3.14159,float_val2)" " = 1"
94 setup_xfail "mn10300-*-*"
95 if { [test_compiler_info "armcc-*"] } { setup_xfail "*-*-*" }
96 gdb_test "p t_float_values(float_val1,-2.3765)" " = 1"
97 # Same, via unprototyped function pointer (t_float_values is
98 # always unprototyped).
99 gdb_test "p ((int (*) ()) t_float_values)(float_val1,-2.3765)" " = 1"
101 # Test passing of arguments which might not be widened.
102 gdb_test "p t_float_values2(0.0,0.0)" " = 0"
103 # Same, via function pointer.
105 gdb_test "p ((int (*) (float, float)) t_float_values2)(0.0,0.0)" " = 0"
107 gdb_test "p ((int (*) ()) t_float_values2)(0.0,0.0)" " = 0"
110 gdb_test "p t_float_values2(3.14159,float_val2)" " = 1"
112 gdb_test "p ((int (*) (float, float)) t_float_values2)(3.14159,float_val2)" " = 1"
114 gdb_test "p ((int (*) ()) t_float_values2)(3.14159,float_val2)" " = 1"
117 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 gdb_test "p t_small_values(1,2,3,4,5,6,7,8,9,10)" " = 55"
121 gdb_test "p t_double_values(0.0,0.0)" " = 0"
122 gdb_test "p t_double_values(45.654,-67.66)" " = 1"
123 gdb_test "p t_double_values(double_val1,double_val2)" " = 1"
124 gdb_test "p t_double_values(45.654,double_val2)" " = 1"
125 gdb_test "p t_double_values(double_val1,-67.66)" " = 1"
127 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 gdb_test "p t_double_int(99.0, 1)" " = 0"
130 gdb_test "p t_double_int(99.0, 99)" " = 1"
131 gdb_test "p t_int_double(99, 1.0)" " = 0"
132 gdb_test "p t_int_double(99, 99.0)" " = 1"
135 if [support_complex_tests] {
136 gdb_test "p t_float_complex_values(fc1, fc2)" " = 1"
137 gdb_test "p t_float_complex_values(fc3, fc4)" " = 0"
139 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"
140 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 gdb_test "p t_double_complex_values(dc1, dc2)" " = 1"
143 gdb_test "p t_double_complex_values(dc3, dc4)" " = 0"
145 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"
146 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 gdb_test "p t_long_double_complex_values(ldc1, ldc2)" " = 1"
149 gdb_test "p t_long_double_complex_values(ldc3, ldc4)" " = 0"
150 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"
151 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"
154 gdb_test "p t_string_values(string_val2,string_val1)" " = 0"
155 gdb_test "p t_string_values(string_val1,string_val2)" " = 1"
156 gdb_test "p t_string_values(\"string 1\",\"string 2\")" " = 1"
157 gdb_test "p t_string_values(\"string 1\",string_val2)" " = 1"
158 gdb_test "p t_string_values(string_val1,\"string 2\")" " = 1"
160 gdb_test "p t_char_array_values(char_array_val2,char_array_val1)" " = 0"
161 gdb_test "p t_char_array_values(char_array_val1,char_array_val2)" " = 1"
162 gdb_test "p t_char_array_values(\"carray 1\",\"carray 2\")" " = 1"
163 gdb_test "p t_char_array_values(\"carray 1\",char_array_val2)" " = 1"
164 gdb_test "p t_char_array_values(char_array_val1,\"carray 2\")" " = 1"
166 gdb_test "p doubleit(4)" " = 8"
167 gdb_test "p add(4,5)" " = 9"
168 gdb_test "p t_func_values(func_val2,func_val1)" " = 0"
169 gdb_test "p t_func_values(func_val1,func_val2)" " = 1"
171 gdb_test "p function_struct.func(5)" " = 10"
172 gdb_test "p function_struct_ptr->func(10)" " = 20"
174 # GDB currently screws up the passing of function parameters for
175 # ABIs that use function descriptors. Instead of passing the
176 # address of te function descriptor, GDB passes the address of the
177 # function body. This results in the called function treating the
178 # first few instructions of the function proper as a descriptor
179 # and attempting a jump through that (a totally random address).
180 setup_kfail gdb/1457 "rs6000*-*-aix*"
181 setup_kfail gdb/1457 "powerpc*-*-aix*"
182 gdb_test "p t_func_values(add,func_val2)" " = 1"
183 setup_kfail gdb/1457 "rs6000*-*-aix*"
184 setup_kfail gdb/1457 "powerpc*-*-aix*"
185 gdb_test "p t_func_values(func_val1,doubleit)" " = 1"
186 setup_kfail gdb/1457 "rs6000*-*-aix*"
187 setup_kfail gdb/1457 "powerpc*-*-aix*"
188 gdb_test "p t_call_add(add,3,4)" " = 7"
189 gdb_test "p t_call_add(func_val1,3,4)" " = 7"
191 gdb_test "p t_enum_value1(enumval1)" " = 1"
192 gdb_test "p t_enum_value1(enum_val1)" " = 1"
193 gdb_test "p t_enum_value1(enum_val2)" " = 0"
195 gdb_test "p t_enum_value2(enumval2)" " = 1"
196 gdb_test "p t_enum_value2(enum_val2)" " = 1"
197 gdb_test "p t_enum_value2(enum_val1)" " = 0"
199 gdb_test "p sum_args(1,{2})" " = 2"
200 gdb_test "p sum_args(2,{2,3})" " = 5"
201 gdb_test "p sum_args(3,{2,3,4})" " = 9"
202 gdb_test "p sum_args(4,{2,3,4,5})" " = 14"
204 gdb_test "p sum10 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)" " = 55"
206 gdb_test "p cmp10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)" " = 1"
208 gdb_test "p t_structs_c(struct_val1)" "= 120 'x'" \
209 "call inferior func with struct - returns char"
210 gdb_test "p t_structs_s(struct_val1)" "= 87" \
211 "call inferior func with struct - returns short"
212 gdb_test "p t_structs_i(struct_val1)" "= 76" \
213 "call inferior func with struct - returns int"
214 gdb_test "p t_structs_l(struct_val1)" "= 51" \
215 "call inferior func with struct - returns long"
217 if {$allow_float_test} {
218 gdb_test "p t_structs_f(struct_val1)" "= 2.12.*" \
219 "call inferior func with struct - returns float"
220 gdb_test "p t_structs_d(struct_val1)" "= 9.87.*" \
221 "call inferior func with struct - returns double"
224 if [support_complex_tests] {
226 gdb_test "p t_structs_fc(struct_val1)" ".*= 3 \\+ 3i" \
227 "call inferior func with struct - returns float _Complex"
229 gdb_test "p t_structs_dc(struct_val1)" ".*= 4 \\+ 4i" \
230 "call inferior func with struct - returns double _Complex"
232 gdb_test "p t_structs_ldc(struct_val1)" "= 5 \\+ 5i" \
233 "call inferior func with struct - returns long double _Complex"
236 gdb_test "p t_structs_a(struct_val1)" "= (.unsigned char .. )?<.*buf.*> \"foo\"" \
237 "call inferior func with struct - returns char *"
239 # Restore default value.
240 gdb_test_no_output "set unwind-on-signal off"
243 # Procedure to get current content of all registers.
244 proc fetch_all_registers {test} {
247 set all_registers_lines {}
249 # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
250 # corrupting the next matches.
251 if {[gdb_test_multiple "info all-registers" $test {
252 -re "info all-registers\r\n" {
255 -ex "The program has no registers now" {
259 -re "^bspstore\[ \t\]+\[^\r\n\]+\r\n" {
260 if [istarget "ia64-*-*"] {
261 # Filter out bspstore which is specially tied to bsp,
262 # giving spurious differences.
264 lappend all_registers_lines $expect_out(0,string)
268 -re "^pstate\[ \t\]+\[^\r\n\]+\r\n" {
269 if [istarget "sparc64-*-linux-gnu"] {
270 # Filter out the pstate register, since in sparc64
271 # targets the Linux kernel disables pstate.PEF when
272 # returning from traps, giving spurious differences.
274 lappend all_registers_lines $expect_out(0,string)
278 -re "^last_break\[ \t\]+\[^\r\n\]+\r\n" {
279 if [istarget "s390*-*-*"] {
280 # Filter out last_break which is read-only,
281 # giving spurious differences.
283 lappend all_registers_lines $expect_out(0,string)
287 -re "^\(?:cycle\|instret\)\[ \t\]+\[^\r\n\]+\r\n" {
288 if [istarget "riscv*-*-*"] {
289 # Filter out the cycle counter and instructions
290 # retired counter CSRs which are read-only, giving
291 # spurious differences.
293 lappend all_registers_lines $expect_out(0,string)
297 -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" {
298 lappend all_registers_lines $expect_out(0,string)
301 -re "$gdb_prompt $" {
304 -re "^\[^\r\n\]+\r\n" {
306 warning "Unrecognized output: $expect_out(0,string)"
321 return $all_registers_lines
324 # Global used by RERUN_AND_PREPARE to make test names unique.
327 proc rerun_and_prepare {} {
331 with_test_prefix "rerun number ${rerun_count}" {
333 if { ![runto_main] } {
337 gdb_test_no_output "set language c"
341 # Make sure that malloc gets called and that the floating
342 # point unit is initialized via a call to t_double_values.
344 "t_double_values\\(double_val1, double_val2\\);.*" \
345 "next to t_double_values"
346 gdb_test "next" "t_structs_c\\(struct_val1\\);.*" \
347 "next to t_structs_c"
351 proc perform_all_tests {prototypes} {
352 gdb_test_no_output "set print sevenbit-strings"
353 gdb_test_no_output "set print address off"
354 gdb_test_no_output "set width 0"
358 # Save all register contents.
359 set old_reg_content \
360 [fetch_all_registers "retrieve original register contents 1"]
362 # Perform function calls.
363 do_function_calls $prototypes
365 # Check if all registers still have the same value.
366 set new_reg_content [fetch_all_registers \
367 "register contents after gdb function calls"]
368 if {$old_reg_content == $new_reg_content} {
369 pass "gdb function calls preserve register contents"
371 set old_reg_content $new_reg_content
372 fail "gdb function calls preserve register contents"
376 # Save all register contents.
377 set old_reg_content \
378 [fetch_all_registers "retrieve original register contents 2"]
380 # Set breakpoint at a function we will call from gdb.
383 # Call function (causing a breakpoint hit in the call dummy) and do a continue,
384 # make sure we are back at main and still have the same register contents.
385 gdb_test "print add(4,5)" \
386 "The program being debugged stopped while.*" \
387 "stop at breakpoint in call dummy function"
388 gdb_test "continue" "Continuing.*" "continue from call dummy breakpoint"
389 if ![gdb_test "bt 2" \
391 "bt after continuing from call dummy breakpoint"] then {
392 set new_reg_content [fetch_all_registers \
393 "register contents after stop in call dummy"]
394 if {$old_reg_content == $new_reg_content} {
395 pass "continue after stop in call dummy preserves register contents"
397 fail "continue after stop in call dummy preserves register contents"
402 # Set breakpoint at a function we will call from gdb.
404 # Save all register contents.
405 set old_reg_content \
406 [fetch_all_registers "retrieve original register contents 3"]
408 # Call function (causing a breakpoint hit in the call dummy) and do a finish,
409 # make sure we are back at main and still have the same register contents.
410 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
411 "call function causing a breakpoint then do a finish"
413 "Value returned is .* = 9" \
414 "finish from call dummy breakpoint returns correct value"
415 if ![gdb_test "bt 2" \
417 "bt after finishing from call dummy breakpoint"] then {
418 set new_reg_content [fetch_all_registers \
419 "register contents after finish in call dummy"]
420 if {$old_reg_content == $new_reg_content} {
421 pass "finish after stop in call dummy preserves register contents"
423 fail "finish after stop in call dummy preserves register contents"
428 # Set breakpoint at a function we will call from gdb.
430 # Save all register contents.
431 set old_reg_content \
432 [fetch_all_registers "retrieve original register contents 4"]
434 # Call function (causing a breakpoint hit in the call dummy) and do a return
435 # with a value, make sure we are back at main with the same register contents.
436 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
437 "call function causing a breakpoint and then do a return"
438 if ![gdb_test "return 7" \
440 "back at main after return from call dummy breakpoint" \
441 "Make add return now. .y or n.*" \
443 set new_reg_content [fetch_all_registers \
444 "register contents after return in call dummy"]
445 if {$old_reg_content == $new_reg_content} {
446 pass "return after stop in call dummy preserves register contents"
448 fail "return after stop in call dummy preserves register contents"
453 # Set breakpoint at a function we will call from gdb.
455 set old_reg_content \
456 [fetch_all_registers "retrieve original register contents 5"]
458 # Call function (causing a breakpoint hit in the call dummy), and
459 # call another function from the call dummy frame (thereby setting up
460 # several nested call dummy frames). Test that backtrace and finish
461 # work when several call dummies are nested.
463 gdb_breakpoint t_small_values
464 gdb_test "print add(2,3)" "The program being debugged stopped while.*" \
465 "stop at nested call level 1"
466 gdb_test "backtrace" \
467 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \
468 "backtrace at nested call level 1"
469 gdb_test "print add(4,5)" "The program being debugged stopped while.*" \
470 "stop at nested call level 2"
471 gdb_test "backtrace" \
472 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \
473 "backtrace at nested call level 2"
474 gdb_test "print sum10(2,4,6,8,10,12,14,16,18,20)" \
475 "The program being debugged stopped while.*" \
476 "stop at nested call level 3"
477 gdb_test "backtrace" \
478 "\#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.*" \
479 "backtrace at nested call level 3"
480 gdb_test "print t_small_values(1,3,5,7,9,11,13,15,17,19)" \
481 "The program being debugged stopped while.*" \
482 "stop at nested call level 4"
483 gdb_test "backtrace" \
484 "\#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.*" \
485 "backtrace at nested call level 4"
486 gdb_test "finish" "Value returned is .* = 100" \
487 "Finish from nested call level 4"
488 gdb_test "backtrace" \
489 "\#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.*" \
490 "backtrace after finish from nested call level 4"
491 gdb_test "finish" "Value returned is .* = 110" \
492 "Finish from nested call level 3"
493 gdb_test "backtrace" \
494 "\#0 add \\(a=4, b=5\\).*\#1 <function called from gdb>.*\#2 add \\(a=2, b=3\\).*\#3 <function called from gdb>.*\#4 main.*" \
495 "backtrace after finish from nested call level 3"
496 gdb_test "finish" "Value returned is .* = 9" \
497 "Finish from nested call level 2"
498 gdb_test "backtrace" \
499 "\#0 add \\(a=2, b=3\\).*\#1 <function called from gdb>.*\#2 main.*" \
500 "backtrace after finish from nested call level 2"
501 gdb_test "finish" "Value returned is .* = 5" \
502 "Finish from nested call level 1"
503 gdb_test "backtrace" "\#0 main .*" \
504 "backtrace after finish from nested call level 1"
506 set new_reg_content [fetch_all_registers \
507 "register contents after nested call dummies"]
508 if {$old_reg_content == $new_reg_content} {
509 pass "nested call dummies preserve register contents"
511 fail "nested call dummies preserve register contents"
514 # GDB should not crash by internal error on $sp underflow during the inferior
515 # call. It is OK it will stop on some: Cannot access memory at address 0x$hex.
517 if {![target_info exists gdb,nosignals] && ![istarget "*-*-uclinux*"]} {
518 gdb_test {set $old_sp = $sp}
520 gdb_test {set $sp = 0}
521 gdb_test "call doubleit (1)" ".*" "sp == 0: call doubleit (1)"
523 gdb_test {set $sp = -1}
524 gdb_test "call doubleit (1)" ".*" "sp == -1: call doubleit (1)"
526 gdb_test {set $sp = $old_sp}
529 # Test function descriptor resolution - the separate debug info .opd section
530 # handling vs. local labels `.L'... as `Lcallfunc' starts with `L'.
532 gdb_test "print callfunc (Lcallfunc, 5)" " = 12"
534 # Regression test for function pointer cast.
535 gdb_test "print *((int *(*) (void)) voidfunc)()" " = 23"
538 # Perform all tests with and without function prototypes.
540 if { ![prepare_for_testing "failed to prepare" $testfile $srcfile "$compile_flags additional_flags=-DPROTOTYPES"] } {
544 if { ![prepare_for_testing "failed to prepare" $testfile $srcfile "$compile_flags additional_flags=-DNO_PROTOTYPES"] } {
545 with_test_prefix "noproto" {