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# Copyright 1992, 1994, 1995, 1997, 2004, 2007, 2008, 2009, 2010

# 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 3 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, see .

# This file was adapted from bitfields.exp by Paul Hilfinger

# (Hilfinger@gnat.com)

#

# Tests for bit-fields that do not fit in type (unsigned) int, but do fit

# in type (unsigned) long long.  We perform essentially the same tests as

# in bitfields.c, which considers only bit-fields that are <= 9 bits long.

#

if $tracelevel then {

        strace $tracelevel

}

set prms_id 0

set bug_id 0

set testfile "bitfields2"

set srcfile ${testfile}.c

set binfile ${objdir}/${subdir}/${testfile}

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {

    untested bitfields2.exp

    return -1

}

set has_signed_bitfields 1

#

# Continue to expected breakpoint at FUNCTION.  Append TAG to make pass/fail

# messages (to make them unique).  Suppress tests on failure.

#

proc continue_test { function tag } {

    global decimal

    global srcfile

    if [gdb_test "cont" "Break.*$function \\(\\) at .*$srcfile:$decimal.*" "continuing to $function $tag"] {

        gdb_suppress_tests

    }

}

#

# Start next test by running to tester and then to FUNCTION.   Suppresses

# tests on failure.

#

proc start_test { function } {

    delete_breakpoints

    if [gdb_test "break tester" "" "break tester prior to $function"] {

        gdb_suppress_tests

    }

    continue_test "tester" "prior to $function"

    if ![gdb_breakpoint $function] {

        gdb_suppress_tests

    }

    continue_test $function "#0"

}

#

# Test bitfield locating and uniqueness.

# For each member, set that member to 1 and verify that the member (and only

# that member) is 1, then reset it back to 0.

#

proc bitfield_uniqueness {} {

    global decimal

    global hex

    global gdb_prompt

    global srcfile

    start_test break1

    if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 0, s1 = 1, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.s1 = 1"] {

        gdb_suppress_tests;

    }

    continue_test break1 "#1"

    if [gdb_test "print flags" ".*u1 = 1, u2 = 0, u3 = 0, s1 = 0, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.u1 = 1"] {

        gdb_suppress_tests;

    }

    continue_test break1 "#2"

    if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 0, s1 = 0, s2 = 1, s3 = 0.*" "bitfield uniqueness; flags.s2 = 1"] {

        gdb_suppress_tests;

    }

    continue_test break1 "#3"

    if [gdb_test "print flags" ".*u1 = 0, u2 = 1, u3 = 0, s1 = 0, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.u2 = 1"] {

        gdb_suppress_tests;

    }

    continue_test break1 "#4"

    if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 0, s1 = 0, s2 = 0, s3 = 1.*" "bitfield uniqueness; flags.s3 = 1"] {

        gdb_suppress_tests;

    }

    continue_test break1 "#5"

    if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 1, s1 = 0, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.u3 = 1"] {

        gdb_suppress_tests

    }

    gdb_stop_suppressing_tests;

}

#

# Test bitfield containment.

# Fill alternating fields with all 1's and verify that none of the bits

# "bleed over" to the other fields.

#

proc bitfield_containment {} {

    global decimal

    global hex

    global gdb_prompt

    global srcfile

    start_test break2

    # If program is compiled with Sun CC, signed fields print out as their

    # actual sizes; if compiled with gcc, they print out as 0xffffffff.

    if [gdb_test "print/x flags" "= {u1 = 0x7fff, u2 = 0x0, u3 = 0xffff, s1 = 0x0, s2 = 0x(1ffffffff|f*), s3 = 0x0}" "bitfield containment; flags.u1, flags.u3, and flags.s3 to all 1s"] {

        gdb_suppress_tests

    }

    continue_test break2 "#1"

    if [gdb_test "print/x flags" "= {u1 = 0x0, u2 = 0x1ffffffff, u3 = 0x0, s1 = 0x(7fff|f*), s2 = 0x0, s3 = 0xf*}" "bitfield containment; flags.u2, flags.s1, flags.s2 to all 1s"] {

        gdb_suppress_tests

    }

    gdb_stop_suppressing_tests;

}

# Test unsigned bitfields for unsignedness and range.

# Fill the unsigned fields with the maximum positive value and verify that

# the values are printed correctly.

proc bitfield_unsignedness {} {

    global decimal

    global hex

    global gdb_prompt

    global srcfile

    start_test break3

    if [gdb_test "print flags" ".*u1 = 32767, u2 = 8589934591, u3 = 65535, s1 = 0, s2 = 0, s3 = 0.*" "maximum unsigned bitfield values"] {

        gdb_suppress_tests

    }

    gdb_stop_suppressing_tests;

}

#

# Test signed bitfields for signedness and range.

# Fill the signed fields with the maximum positive value, then the maximally

# negative value, then -1, and verify in each case that the values are

# printed correctly.

#

proc bitfield_signedness {} {

    global decimal

    global hex

    global gdb_prompt

    global srcfile

    global has_signed_bitfields

    start_test break4

    if [gdb_test "print flags" "= {.*u1 = 0, u2 = 0, u3 = 0, s1 = 16383, s2 = 4294967295, s3 = 32767.*}" "maximum signed bitfield values"] {

        gdb_suppress_tests

    }

    continue_test break4 "#1"

    # Determine if the target has signed bitfields so we can skip

    # the signed bitfield tests if it doesn't.

    set test "determining signed-ness of bitfields"

    set has_signed_bitfields 0

    gdb_test_multiple "print i" $test {

        -re ".* = -32768.*$gdb_prompt $" {

            set has_signed_bitfields 1

            pass "determining signed-ness of bitfields"

        }

        -re ".* = 32768.*$gdb_prompt $" {

            pass "determining signed-ness of bitfields"

        }

        -re ".*$gdb_prompt $" {

            fail "determining signed-ness of bitfields"

            gdb_suppress_tests

        }

    }

    set test "most negative signed bitfield values"

    if $has_signed_bitfields then {

        if [gdb_test "print flags" "u1 = 0, u2 = 0, u3 = 0, s1 = -16384, s2 = -4294967296, s3 = -32768.*" $test ] {

            gdb_suppress_tests

        }

    } else {

        unsupported $test

    }

    continue_test break4 "#2"

    set test "signed bitfields containing -1"

    if $has_signed_bitfields then {

        if [gdb_test "print flags" "u1 = 0, u2 = 0, u3 = 0, s1 = -1, s2 = -1, s3 = -1.*" $test ] {

            gdb_suppress_tests

        }

    } else {

        unsupported $test

    }

    gdb_stop_suppressing_tests;

}

# Test setting of long long bit fields from within GDB.

proc bitfield_set {} {

    global decimal

    global hex

    global gdb_prompt

    global srcfile

    global has_signed_bitfields

    start_test break5

    set big_set_failed 0

    set test "set long long unsigned bitfield"

    gdb_test_multiple "print flags.u2 = 0x100000000" $test {

        -re "warning: Value does not fit.*$gdb_prompt $" {

            fail "$test"

            gdb_suppress_tests

        }

        -re "= 4294967296.*$gdb_prompt $" {

            pass "$test"

        }

    }

    set test "set long long signed bitfield positive"

    gdb_test_multiple "print flags.s2 = 0x80000000" $test {

        -re "warning: Value does not fit.*$gdb_prompt $" {

            fail "$test"

            gdb_suppress_tests

        }

        -re "= 2147483648.*$gdb_prompt $" {

            pass "$test"

        }

    }

    if [gdb_test "print flags" "u1 = 0, u2 = 4294967296, u3 = 0, s1 = 0, s2 = 2147483648, s3 = 0.*" "long long bitfield values after set"] {

        gdb_suppress_tests

    }

    set test "set long long signed bitfield negative"

    if $has_signed_bitfields then {

        gdb_test_multiple "print flags.s2 = -1" $test {

            -re "warning: Value does not fit.*$gdb_prompt $" {

                fail "$test"

                gdb_suppress_tests

            }

            -re "= -1.*$gdb_prompt $" {

                pass "$test"

            }

        }

    } else {

        unsupported $test

    }

    set test  "long long bitfield values after set negative"

    if $has_signed_bitfields then {

        if [gdb_test "print flags" "u1 = 0, u2 = 4294967296, u3 = 0, s1 = 0, s2 = -1, s3 = 0.*" $test] {

            gdb_suppress_tests

        }

    } else {

        unsupported $test

    }

    gdb_stop_suppressing_tests;

}

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

send_gdb "set print sevenbit-strings\n" ; gdb_expect -re "$gdb_prompt $"

runto_main

bitfield_uniqueness

bitfield_containment

bitfield_unsignedness

bitfield_signedness

bitfield_set