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# Copyright 1992, 1994, 1995, 1997, 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 written by Fred Fish. (fnf@cygnus.com)

if $tracelevel then {

        strace $tracelevel

}

set prms_id 0

set bug_id 0

set testfile "bitfields"

set srcfile ${testfile}.c

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

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

    untested bitfields.exp

    return -1

}

#

# 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

    if { ! [runto break1] } {

        gdb_suppress_tests;

    }

    if [gdb_test "print flags" ".*uc = 1 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*"] {

        gdb_suppress_tests;

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #1"] {

        gdb_suppress_tests;

    }

    # Note that we check for s1 as either 1 or -1, so that failure to

    # treat it correctly as a signed 1bit field (values 0 or -1) while

    # printing its value does not cause a spurious failure.  We do the

    # signedness preservation test later.

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = (1|-1), u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s1)"] {

        gdb_suppress_tests;

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #2"] {

        gdb_suppress_tests;

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u1)"] {

        gdb_suppress_tests;

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #3"] {

        gdb_suppress_tests;

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s2)"] {

        gdb_suppress_tests;

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #4"] {

        gdb_suppress_tests;

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 1, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u2)"] {

        gdb_suppress_tests;

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #5"] {

        gdb_suppress_tests;

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 1, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s3)"] {

        gdb_suppress_tests;

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #6"] {

        gdb_suppress_tests;

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 1, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u3)"] {

        gdb_suppress_tests

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #7"] {

        gdb_suppress_tests

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 1, u9 = 0, sc = 0.*" "bitfield uniqueness (s9)"] {

        gdb_suppress_tests

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #8"] {

        gdb_suppress_tests

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 1, sc = 0.*" "bitfield uniqueness (u9)"] {

        gdb_suppress_tests

    }

    if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #9"] {

        gdb_suppress_tests

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 1.*" "bitfield uniqueness (sc)"] {

        gdb_suppress_tests

    }

    # Hmmmm?

    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

    delete_breakpoints

    if { ![runto break2] } {

        gdb_suppress_tests

    }

    if [gdb_test "print/x flags" "= {uc = 0xff, s1 = 0x0, u1 = 0x1, s2 = 0x0, u2 = 0x3, s3 = 0x0, u3 = 0x7, s9 = 0x0, u9 = 0x1ff, sc = 0x0}" "bitfield containment #1"] {

        gdb_suppress_tests

    }

    if [gdb_test "cont" "Break.*break2 \\(\\) at .*$srcfile:$decimal.*" "continuing to break2"] {

        gdb_suppress_tests

    }

    # If program is compiled with Sun CC, then these print out as their

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

    # (which strikes me as bogus, but accept it at least for now).

    if [gdb_test "print/x flags" "= {uc = 0x0, s1 = 0x(1|f*), u1 = 0x0, s2 = 0x(3|f*), u2 = 0x0, s3 = 0x(7|f*), u3 = 0x0, s9 = 0x(1ff|f*), u9 = 0x0, sc = 0xff}" "bitfield containment #2"] {

        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

    delete_breakpoints

    if { ![runto break3] } {

        gdb_suppress_tests

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 3, s3 = 0, u3 = 7, s9 = 0, u9 = 511, sc = 0.*" "unsigned bitfield ranges"] {

        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

    delete_breakpoints

    if { ! [runto break4] } {

        gdb_suppress_tests

    }

    if [gdb_test "print flags" "= {uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 3, u3 = 0, s9 = 255, u9 = 0, sc = 0 .*}" "signed bitfields, max positive values"] {

        gdb_suppress_tests

    }

    if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #1"] {

        gdb_suppress_tests

    }

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

    # the signed bitfield tests if it doesn't.

    send_gdb "print i\n"

    gdb_expect {

        -re ".* = -256.*$gdb_prompt $" {

            pass "determining signed-ness of bitfields"

        }

        -re ".* = 256.*$gdb_prompt $" {

            pass "determining signed-ness of bitfields"

            setup_xfail "*-*-*"

        }

        -re ".*$gdb_prompt $" {

            fail "determining signed-ness of bitfields"

            gdb_suppress_tests

        }

        default {

            fail "determining signed-ness of bitfields" ;

            gdb_suppress_tests;

        }

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -2, u2 = 0, s3 = -4, u3 = 0, s9 = -256, u9 = 0, sc = 0.*" "signed bitfields, max negative values"] {

        gdb_suppress_tests

    }

    if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #2"] {

        gdb_suppress_tests

    }

    if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -1, u2 = 0, s3 = -1, u3 = 0, s9 = -1, u9 = 0, sc = 0.*" "signed bitfields with -1"] {

        gdb_suppress_tests

    }

    # Hmmmm???

    gdb_stop_suppressing_tests;

}

# Test bitfields at non-zero offsets in a struct.

proc bitfield_at_offset {} {

    global decimal

    global hex

    global gdb_prompt

    global srcfile

    gdb_breakpoint break5

    if [gdb_test "cont" "Break.*break5 \\(\\) at .*$srcfile:$decimal.*" "continuing to break5"] {

        return

    }

    set one ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 5, s9 = 0, u9 = 0, sc = 0.*"

    set two ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 3, s9 = 0, u9 = 0, sc = 0.*"

    gdb_test "print container" "$one$two" "distinct bitfields in container"

    gdb_test "print container.one.u3" ".* = 5"

    gdb_test "print container.two.u3" ".* = 3"

}

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

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

bitfield_uniqueness

if [istarget "mips-idt-*"] then {

    # Restart because IDT/SIM runs out of file descriptors.

    gdb_exit

    gdb_start

    gdb_reinitialize_dir $srcdir/$subdir

    gdb_load ${binfile}

}

bitfield_containment

if [istarget "mips-idt-*"] then {

    # Restart because IDT/SIM runs out of file descriptors.

    gdb_exit

    gdb_start

    gdb_reinitialize_dir $srcdir/$subdir

    gdb_load ${binfile}

}

bitfield_unsignedness

if [istarget "mips-idt-*"] then {

    # Restart because IDT/SIM runs out of file descriptors.

    gdb_exit

    gdb_start

    gdb_reinitialize_dir $srcdir/$subdir

    gdb_load ${binfile}

}

bitfield_signedness

bitfield_at_offset