1 # Copyright (C) 1997, 1998, 1999 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 2 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, write to the Free Software
15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17 # Please email any bugs, comments, and/or additions to this file to:
18 # bug-gdb@prep.ai.mit.edu
24 # step-test.exp -- Expect script to test stepping in gdb
30 set testfile step-test
31 set srcfile ${srcdir}/${subdir}/${testfile}.c
32 set binfile ${objdir}/${subdir}/${testfile}
34 remote_exec build "rm -f ${binfile}"
35 if { [gdb_compile "${srcfile}" "${binfile}" executable {debug}] != "" } {
36 gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
41 gdb_reinitialize_dir $srcdir/$subdir
44 if ![runto_main] then {
45 fail "Can't run to main"
49 # Set a breakpoint at line 45, if stepi then finish fails, we would
50 # run to the end of the program, which would mess up the rest of the tests.
54 gdb_test "next" ".*${decimal}.*x = 1;.*" "next 1"
55 gdb_test "step" ".*${decimal}.*y = 2;.*" "step 1"
59 gdb_test "next 2" ".*${decimal}.*w = w.*2;.*" "next 2"
60 gdb_test "step 3" ".*${decimal}.*z = z.*5;.*" "step 3"
61 gdb_test "next" ".*${decimal}.*callee.*OVER.*" "next 3"
65 gdb_test "next" ".*${decimal}.*callee.*INTO.*" "next over"
69 gdb_test "step" ".*${decimal}.*myglob.*" "step into"
73 # I wonder if this is really portable. Are there any caller-saves
74 # platforms, on which `finish' will return you to some kind of pop
75 # instruction, which is attributed to the line containing the function
78 # On PA64, we end up at a different instruction than PA32.
79 # On IA-64, we also end up on callee instead of on the next line due
80 # to the restoration of the global pointer (which is a caller-save).
81 if { [istarget "hppa2.0w-hp-hpux*"] || [istarget "ia64-*-*"]} {
84 -re ".*${decimal}.*a.*5.*= a.*3.*$gdb_prompt $" { pass "step out 1" }
85 -re ".*${decimal}.*callee.*INTO.*$gdb_prompt $" { pass "step out 2" }
86 timeout { fail "step out" }
89 gdb_test "finish" ".*${decimal}.*a.*5.*= a.*3.*" "step out"
92 ### Testing nexti and stepi.
94 ### test_i NAME COMMAND HERE THERE
96 ### Send COMMAND to gdb over and over, while the output matches the
97 ### regexp HERE, followed by the gdb prompt. Pass if the output
98 ### eventually matches the regexp THERE, followed by the gdb prompt;
99 ### fail if we have to iterate more than a hundred times, we time out
100 ### talking to gdb, or we get output which is neither HERE nor THERE. :)
102 ### Use NAME as the name of the test.
104 ### The exact regexps used are "$HERE.*$gdb_prompt $"
105 ### and "$THERE.*$gdb_prompt $"
107 proc test_i {name command here there} {
112 send_gdb "${command}\n"
114 -re "$here.*$gdb_prompt $" {
115 # Okay, we're still on the same line. Just step again.
117 -re "$there.*$gdb_prompt $" {
118 # We've reached the next line. Rah.
122 -re "$gdb_prompt $" {
123 # We got something else. Fail.
128 fail "$name (timeout)"
133 # Have we gone for too many steps without seeing any progress?
134 if {[incr i] >= 100} {
135 fail "$name (no progress after 100 steps)"
141 test_i "stepi to next line" "stepi" \
142 ".*${decimal}.*a.*5.* = a.*3" \
143 ".*${decimal}.*callee.*STEPI"
144 test_i "stepi into function" "stepi" \
145 ".*${decimal}.*callee.*STEPI" \
146 ".*callee \\(\\) at .*step-test\\.c"
148 # Continue to step until we reach the function's body. This makes it
149 # more likely that we've actually completed the prologue, so "finish"
151 test_i "stepi into function's first source line" "stepi" \
152 ".*${decimal}.*int callee" \
153 ".*${decimal}.*myglob.*; return 0;"
155 # Have to be careful here, if the finish does not work,
156 # then we may run to the end of the program, which
157 # will cause erroneous failures in the rest of the tests
160 -re ".*(Program received|Program exited).*$gdb_prompt $" {
161 # Oops... We ran to the end of the program... Better reset
162 if {![runto_main]} then {
163 fail "Can't run to main"
166 if {![runto step-test.c:45]} {
167 fail "Can't run to line 45"
170 fail "stepi: finish call"
172 -re ".*${decimal}.*callee.*NEXTI.*$gdb_prompt $" {
173 pass "stepi: finish call"
175 -re ".*${decimal}.*callee.*STEPI.*$gdb_prompt $" {
176 # On PA64, we end up at a different instruction than PA32.
177 # On IA-64, we end up on callee instead of on the following line due
178 # to the restoration of the global pointer.
179 if { [istarget "hppa2.0w-hp-hpux*"] || [istarget "ia64-*-*"] } {
180 pass "stepi: finish call 2"
182 fail "stepi: finish call 2"
186 -re "$gdb_prompt $" {
187 # We got something else. Fail.
188 fail "stepi: finish call"
192 fail "stepi: finish call (timeout)"
197 test_i "nexti over function" "nexti" \
198 ".*${decimal}.*callee.*NEXTI" \
199 ".*${decimal}.*y = w \\+ z;"
201 # On some platforms, if we try to step into a function call that
202 # passes a large structure by value, then we actually end up stepping
203 # into memcpy, bcopy, or some such --- GCC emits the call to pass the
204 # argument. Opinion is bitterly divided about whether this is the
205 # right behavior for GDB or not, but we'll catch it here, so folks
206 # won't forget about it.
209 "break [gdb_get_line_number "step-test.exp: large struct by value"]" \
210 ".*Breakpoint.* at .*" \
211 "set breakpoint at call to large_struct_by_value"
212 gdb_test "continue" \
213 ".*Breakpoint ${decimal},.*large_struct_by_value.*" \
214 "run to pass large struct"
216 ".*step-test.exp: arrive here 1.*" \
217 "large struct by value"
219 gdb_continue_to_end "step-test.exp"