125 lines
4.3 KiB
Text
125 lines
4.3 KiB
Text
# Copyright (C) 1992 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 2 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, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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# Please email any bugs, comments, and/or additions to this file to:
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# bug-gdb@prep.ai.mit.edu
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# This file was written by Jeff Law. (law@cs.utah.edu)
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if $tracelevel then {
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strace $tracelevel
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}
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set prms_id 0
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set bug_id 0
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set testfile "return"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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perror "Couldn't compile ${srcfile}"
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return -1
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}
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proc return_tests { } {
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global prompt
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if { ! [ runto func1 ] } then { return 0 }
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send_gdb "return\n"
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expect {
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-re "Make .* return now.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re "func1 ..;.*$prompt $" {
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send_gdb "step\n"
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exp_continue
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}
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-re ".*in main after func1.*$prompt $" { pass "simple return" }
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-re "$prompt $" { fail "simple return" }
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timeout { fail "(timeout) simple return" }
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}
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# Set breakpoints in other interesting functions.
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gdb_test "break func2" "" "break func2"
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gdb_test "break func3" "" "break func3"
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gdb_test "continue" "return -5;" "continue to return of -5"
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send_gdb "return 5\n"
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expect {
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-re "Make .* return now.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re ".*tmp2 = func2.*$prompt $" { }
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-re "$prompt $" { fail "did not return (integer test)" }
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timeout { fail "(timeout) did not return (integer test)" }
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}
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gdb_test "next" "tmp3 = func3.*" "next over call to func2"
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gdb_test "p tmp2" ".* = 5" "correct value returned (integer test)"
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gdb_test "continue" "return -5.0;" "continue to return of -5.0"
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send_gdb "return 5.0\n"
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expect {
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-re "Make .* return now.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re ".*tmp3 = func3.*$prompt $" { }
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-re "$prompt $" { fail "did not return (double test)" }
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timeout { fail "(timeout) did not return (double test)" }
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}
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gdb_test "next" "printf.*" "next over call to func3"
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# This test is going to fail on all i*86 systems using an i*87.
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# When returning a floating point value from a function, all known
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# compilers do this via a `fldl' instruction, which pushes the floating
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# value on the i387 stack. This causes two problems:
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# a) Most i*86 targets do not store (or cannot store, see comment in
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# in i386v-nat.c:i386_register_u_addr) the floating point registers
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# to the target.
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# b) gdb would have to figure out if the `fldl' instruction (or variants
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# of it) has already been executed. If not, it would have to simulate
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# a push instruction, as it is not enough to write the register,
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# the floating point `stack pointer' has to be updated too.
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# Do not expect this to get fixed anytime soon.
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# This test also fails for sparc Solaris 2.3 & 2.4, but passes under 2.5
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# At the time the `next' is issued, the floating point unit for the
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# process is not yet initialized, and the storing of the floating
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# point value to the floating point return register is ignored.
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# Xfail it for current versions that are known to fail. Presumably
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# if some future version does initialize the floating point unit at
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# process start, making this test pass, it will be for a version that
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# is not xfailed.
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setup_xfail "i*86-*-*" "sparc-*-solaris2.3*" "sparc-*-solaris2.4*"
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gdb_test "p tmp3" ".* = 5.*" "correct value returned double test (known problem with i*86 and sparc solaris"
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}
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# Start with a fresh gdb.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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set timeout 30
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return_tests
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