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89 lines
2.6 KiB
Plaintext
89 lines
2.6 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# Copyright 1998-2018 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test GDB's ability to restore saved registers from stack frames
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# when using the `return' command.
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#
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# This file was written by Jim Blandy <jimb@cygnus.com>, with
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# fragments borrowed from return.exp.
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standard_testfile
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set executable $testfile
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if { [prepare_for_testing "failed to prepare" $executable $srcfile] } {
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return -1
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}
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proc restore_tests { } {
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global gdb_prompt
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if { ! [ runto driver ] } {
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return 0
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}
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set limit 5
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# For each caller function,
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# call each of the callee functions,
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# force a return from the callee, and
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# make sure that the local variables still have the right values.
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for {set c 1} {$c <= $limit} {incr c} {
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# Set a breakpoint at the next caller function.
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gdb_test "tbreak caller$c" "Temporary breakpoint.*\[0-9\]*\\." \
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"tbreak caller$c"
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# Continue to the next caller function.
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gdb_test "continue" " caller$c prologue .*" "run to caller$c"
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# Do each callee function.
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for {set e 1} {$e <= $limit} {incr e} {
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gdb_test "tbreak callee$e" "Temporary breakpoint.*\[0-9\]*\\." \
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"caller$c calls callee$e; tbreak callee"
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gdb_test "continue" " callee$e prologue .*/" \
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"caller$c calls callee$e; continue to callee"
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# Do a forced return from the callee.
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set test "caller$c calls callee$e; return callee now"
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gdb_test "return 0" \
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" caller$c .*" \
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"$test" \
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"Make .* return now.*y or n. $" \
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"y"
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# Check that the values of the local variables are what
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# they should be.
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for {set var 1} {$var <= $c} {incr var} {
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set expected [expr 0x7eeb + $var]
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gdb_test "print l$var" " = $expected" \
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"caller$c calls callee$e; return restored l$var to $expected"
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}
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}
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}
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gdb_continue_to_end "" continue 1
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}
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set prev_timeout $timeout
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set timeout 30
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restore_tests
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set timeout $prev_timeout
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