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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [testsuite/] [gdb.base/] [restore.exp] - Blame information for rev 840

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1 24 jeremybenn
# This testcase is part of GDB, the GNU debugger.
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# Copyright 1998, 1999, 2000, 2001, 2002, 2004, 2007, 2008
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# 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 .
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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 , with
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# fragments borrowed from return.exp.
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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 "restore"
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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}" "${binfile}" executable {debug}] != "" } {
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    untested restore.exp
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    return -1
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}
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proc restore_tests { } {
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    global gdb_prompt
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    if { ! [ runto driver ] } {
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        return 0
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    }
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    set limit 5
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    # For each caller function,
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    #   call each of the callee functions,
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    #   force a return from the callee, and
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    #   make sure that the local variables still have the right values.
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    for {set c 1} {$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" "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" "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$e; return callee now"
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            gdb_test_multiple "return 0" "$test" {
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                -re "Make .* return now.*y or n. $" {
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                    send_gdb "y\n"
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                    exp_continue
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                }
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                -re " caller$c .*$gdb_prompt $" {
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                    pass "$test"
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                }
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            }
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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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    if ![gdb_skip_stdio_test "run to completion"] {
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        send_gdb "continue\n"
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        gdb_expect {
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            -re "exiting" {
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                pass "run to completion"
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            }
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            timeout {
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                fail "(timeout) run to completion"
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            }
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        }
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    } else {
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        gdb_test "continue" "" ""
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    }
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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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restore_tests

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