| # 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 |