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Diffstat (limited to 'gdb/testsuite/gdb.base/return.exp')
| -rw-r--r-- | gdb/testsuite/gdb.base/return.exp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.base/return.exp b/gdb/testsuite/gdb.base/return.exp new file mode 100644 index 00000000000..c3a85e8923c --- /dev/null +++ b/gdb/testsuite/gdb.base/return.exp @@ -0,0 +1,124 @@ +# Copyright (C) 1992, 1997 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +# Please email any bugs, comments, and/or additions to this file to: +# bug-gdb@prep.ai.mit.edu + +# This file was written by Jeff Law. (law@cs.utah.edu) + +if $tracelevel then { + strace $tracelevel +} + +set prms_id 0 +set bug_id 0 + +set testfile "return" +set srcfile ${testfile}.c +set binfile ${objdir}/${subdir}/${testfile} +if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { + gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail." +} + +proc return_tests { } { + global gdb_prompt + + + if { ! [ runto func1 ] } then { return 0 } + send_gdb "return\n" + gdb_expect { + -re "Make .* return now.*y or n. $" { + send_gdb "y\n" + exp_continue + } + -re "func1 ..;.*$gdb_prompt $" { + send_gdb "step\n" + exp_continue + } + -re ".*in main after func1.*$gdb_prompt $" { pass "simple return" } + -re "$gdb_prompt $" { fail "simple return" } + timeout { fail "(timeout) simple return" } + } + + # Set breakpoints in other interesting functions. + gdb_test "break func2" "" "break func2" + gdb_test "break func3" "" "break func3" + + gdb_test "continue" "return -5;" "continue to return of -5" + send_gdb "return 5\n" + gdb_expect { + -re "Make .* return now.*y or n. $" { + send_gdb "y\n" + exp_continue + } + -re ".*tmp2 = func2.*$gdb_prompt $" { } + -re "$gdb_prompt $" { fail "did not return (integer test)" } + timeout { fail "(timeout) did not return (integer test)" } + } + gdb_test "next" "tmp3 = func3.*" "next over call to func2" + + gdb_test "p tmp2" ".* = 5" "correct value returned (integer test)" + + gdb_test "continue" "return -5.0;" "continue to return of -5.0" + send_gdb "return 5.0\n" + gdb_expect { + -re "Make .* return now.*y or n. $" { + send_gdb "y\n" + exp_continue + } + -re ".*tmp3 = func3.*$gdb_prompt $" { } + -re "$gdb_prompt $" { fail "did not return (double test)" } + timeout { fail "(timeout) did not return (double test)" } + } + + gdb_test "next" "printf.*" "next over call to func3" + + # This test is going to fail on all i*86 systems using an i*87. + # When returning a floating point value from a function, all known + # compilers do this via a `fldl' instruction, which pushes the floating + # value on the i387 stack. This causes two problems: + # a) Most i*86 targets do not store (or cannot store, see comment in + # in i386v-nat.c:i386_register_u_addr) the floating point registers + # to the target. + # b) gdb would have to figure out if the `fldl' instruction (or variants + # of it) has already been executed. If not, it would have to simulate + # a push instruction, as it is not enough to write the register, + # the floating point `stack pointer' has to be updated too. + # Do not expect this to get fixed anytime soon. + + # This test also fails for sparc Solaris 2.3 & 2.4, but passes under 2.5 + # At the time the `next' is issued, the floating point unit for the + # process is not yet initialized, and the storing of the floating + # point value to the floating point return register is ignored. + # Xfail it for current versions that are known to fail. Presumably + # if some future version does initialize the floating point unit at + # process start, making this test pass, it will be for a version that + # is not xfailed. + + setup_xfail "i*86-*-*" "sparc-*-solaris2.3*" "sparc-*-solaris2.4*" + gdb_test "p tmp3" ".* = 5.*" "correct value returned double test (known problem with i*86 and sparc solaris" +} + + +# Start with a fresh gdb. + +gdb_exit +gdb_start +gdb_reinitialize_dir $srcdir/$subdir +gdb_load ${binfile} + +set timeout 30 +return_tests |