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jeremybenn |
# Copyright 1992, 1994, 1995, 1997, 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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# This file was adapted from bitfields.exp by Paul Hilfinger
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# (Hilfinger@gnat.com)
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#
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# Tests for bit-fields that do not fit in type (unsigned) int, but do fit
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# in type (unsigned) long long. We perform essentially the same tests as
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# in bitfields.c, which considers only bit-fields that are <= 9 bits long.
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#
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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 "bitfields2"
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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}" "${binfile}" executable {debug}] != "" } {
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untested bitfields2.exp
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return -1
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}
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set has_signed_bitfields 1
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#
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# Continue to expected breakpoint at FUNCTION. Append TAG to make pass/fail
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# messages (to make them unique). Suppress tests on failure.
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#
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proc continue_test { function tag } {
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global decimal
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global srcfile
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if [gdb_test "cont" "Break.*$function \\(\\) at .*$srcfile:$decimal.*" "continuing to $function $tag"] {
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gdb_suppress_tests
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}
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}
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#
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# Start next test by running to tester and then to FUNCTION. Suppresses
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# tests on failure.
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#
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proc start_test { function } {
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delete_breakpoints
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if [gdb_test "break tester" "" "break tester prior to $function"] {
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gdb_suppress_tests
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}
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continue_test "tester" "prior to $function"
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if ![gdb_breakpoint $function] {
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gdb_suppress_tests
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}
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continue_test $function "#0"
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}
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#
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# Test bitfield locating and uniqueness.
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# For each member, set that member to 1 and verify that the member (and only
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# that member) is 1, then reset it back to 0.
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#
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proc bitfield_uniqueness {} {
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global decimal
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global hex
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global gdb_prompt
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global srcfile
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start_test break1
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if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 0, s1 = 1, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.s1 = 1"] {
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gdb_suppress_tests;
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}
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continue_test break1 "#1"
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if [gdb_test "print flags" ".*u1 = 1, u2 = 0, u3 = 0, s1 = 0, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.u1 = 1"] {
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gdb_suppress_tests;
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}
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continue_test break1 "#2"
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if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 0, s1 = 0, s2 = 1, s3 = 0.*" "bitfield uniqueness; flags.s2 = 1"] {
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gdb_suppress_tests;
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}
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continue_test break1 "#3"
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if [gdb_test "print flags" ".*u1 = 0, u2 = 1, u3 = 0, s1 = 0, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.u2 = 1"] {
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gdb_suppress_tests;
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}
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continue_test break1 "#4"
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if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 0, s1 = 0, s2 = 0, s3 = 1.*" "bitfield uniqueness; flags.s3 = 1"] {
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gdb_suppress_tests;
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}
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continue_test break1 "#5"
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if [gdb_test "print flags" ".*u1 = 0, u2 = 0, u3 = 1, s1 = 0, s2 = 0, s3 = 0.*" "bitfield uniqueness; flags.u3 = 1"] {
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gdb_suppress_tests
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}
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gdb_stop_suppressing_tests;
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}
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#
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# Test bitfield containment.
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# Fill alternating fields with all 1's and verify that none of the bits
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# "bleed over" to the other fields.
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#
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proc bitfield_containment {} {
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global decimal
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global hex
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global gdb_prompt
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global srcfile
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start_test break2
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# If program is compiled with Sun CC, signed fields print out as their
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# actual sizes; if compiled with gcc, they print out as 0xffffffff.
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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"] {
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gdb_suppress_tests
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}
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continue_test break2 "#1"
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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"] {
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gdb_suppress_tests
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}
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gdb_stop_suppressing_tests;
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}
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# Test unsigned bitfields for unsignedness and range.
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# Fill the unsigned fields with the maximum positive value and verify that
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# the values are printed correctly.
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proc bitfield_unsignedness {} {
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global decimal
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global hex
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global gdb_prompt
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global srcfile
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start_test break3
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if [gdb_test "print flags" ".*u1 = 32767, u2 = 8589934591, u3 = 65535, s1 = 0, s2 = 0, s3 = 0.*" "maximum unsigned bitfield values"] {
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gdb_suppress_tests
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}
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gdb_stop_suppressing_tests;
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}
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#
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# Test signed bitfields for signedness and range.
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# Fill the signed fields with the maximum positive value, then the maximally
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# negative value, then -1, and verify in each case that the values are
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# printed correctly.
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#
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proc bitfield_signedness {} {
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global decimal
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global hex
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global gdb_prompt
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global srcfile
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global has_signed_bitfields
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start_test break4
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if [gdb_test "print flags" "= {.*u1 = 0, u2 = 0, u3 = 0, s1 = 16383, s2 = 4294967295, s3 = 32767.*}" "maximum signed bitfield values"] {
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gdb_suppress_tests
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}
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continue_test break4 "#1"
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# Determine if the target has signed bitfields so we can skip
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# the signed bitfield tests if it doesn't.
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set test "determining signed-ness of bitfields"
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set has_signed_bitfields 0
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gdb_test_multiple "print i" $test {
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-re ".* = -32768.*$gdb_prompt $" {
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set has_signed_bitfields 1
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pass "determining signed-ness of bitfields"
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}
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-re ".* = 32768.*$gdb_prompt $" {
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pass "determining signed-ness of bitfields"
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}
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-re ".*$gdb_prompt $" {
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fail "determining signed-ness of bitfields"
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gdb_suppress_tests
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}
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}
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set test "most negative signed bitfield values"
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if $has_signed_bitfields then {
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if [gdb_test "print flags" "u1 = 0, u2 = 0, u3 = 0, s1 = -16384, s2 = -4294967296, s3 = -32768.*" $test ] {
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gdb_suppress_tests
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}
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} else {
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unsupported $test
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}
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continue_test break4 "#2"
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set test "signed bitfields containing -1"
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if $has_signed_bitfields then {
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if [gdb_test "print flags" "u1 = 0, u2 = 0, u3 = 0, s1 = -1, s2 = -1, s3 = -1.*" $test ] {
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gdb_suppress_tests
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}
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} else {
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unsupported $test
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}
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gdb_stop_suppressing_tests;
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}
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# Test setting of long long bit fields from within GDB.
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proc bitfield_set {} {
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global decimal
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global hex
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global gdb_prompt
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global srcfile
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global has_signed_bitfields
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start_test break5
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set big_set_failed 0
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set test "set long long unsigned bitfield"
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gdb_test_multiple "print flags.u2 = 0x100000000" $test {
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-re "warning: Value does not fit.*$gdb_prompt $" {
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fail "$test"
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gdb_suppress_tests
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}
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-re "= 4294967296.*$gdb_prompt $" {
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pass "$test"
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}
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}
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set test "set long long signed bitfield positive"
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gdb_test_multiple "print flags.s2 = 0x80000000" $test {
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-re "warning: Value does not fit.*$gdb_prompt $" {
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fail "$test"
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gdb_suppress_tests
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}
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-re "= 2147483648.*$gdb_prompt $" {
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pass "$test"
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}
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}
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if [gdb_test "print flags" "u1 = 0, u2 = 4294967296, u3 = 0, s1 = 0, s2 = 2147483648, s3 = 0.*" "long long bitfield values after set"] {
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gdb_suppress_tests
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}
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set test "set long long signed bitfield negative"
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if $has_signed_bitfields then {
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gdb_test_multiple "print flags.s2 = -1" $test {
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-re "warning: Value does not fit.*$gdb_prompt $" {
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fail "$test"
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gdb_suppress_tests
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}
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-re "= -1.*$gdb_prompt $" {
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pass "$test"
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}
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}
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} else {
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unsupported $test
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}
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set test "long long bitfield values after set negative"
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if $has_signed_bitfields then {
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if [gdb_test "print flags" "u1 = 0, u2 = 4294967296, u3 = 0, s1 = 0, s2 = -1, s3 = 0.*" $test] {
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gdb_suppress_tests
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}
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} else {
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unsupported $test
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}
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gdb_stop_suppressing_tests;
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}
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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send_gdb "set print sevenbit-strings\n" ; gdb_expect -re "$gdb_prompt $"
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runto_main
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| 296 |
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bitfield_uniqueness
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| 297 |
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bitfield_containment
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bitfield_unsignedness
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| 299 |
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bitfield_signedness
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bitfield_set
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