1# This testcase is part of GDB, the GNU debugger. 2 3# Copyright 2002-2019 Free Software Foundation, Inc. 4 5# This program is free software; you can redistribute it and/or modify 6# it under the terms of the GNU General Public License as published by 7# the Free Software Foundation; either version 3 of the License, or 8# (at your option) any later version. 9# 10# This program is distributed in the hope that it will be useful, 11# but WITHOUT ANY WARRANTY; without even the implied warranty of 12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13# GNU General Public License for more details. 14# 15# You should have received a copy of the GNU General Public License 16# along with this program. If not, see <http://www.gnu.org/licenses/>. 17 18standard_testfile 19set executable $testfile 20 21if { [prepare_for_testing "failed to prepare" $executable $srcfile] } { 22 return -1 23} 24 25if [get_compiler_info] { 26 return -1 27} 28 29# 30# set it up at a breakpoint so we can play with the variable values 31# 32 33if ![runto_main] then { 34 perror "couldn't run to breakpoint" 35 continue 36} 37 38# 39 40proc check_set { t l r new add } { 41 global gdb_prompt 42 43 set prefix "var ${t} l" 44 gdb_test "tbreak wack_${t}" 45 46 set test "continue to wack_${t}" 47 gdb_test_multiple "continue" $test { 48 -re "register ${t} l = u, r = v;\r\n$gdb_prompt $" { 49 # See GCC PR debug/53948. 50 send_gdb "next\n" 51 exp_continue 52 } 53 -re "l = add_${t} .l, r.;\r\n$gdb_prompt $" { 54 pass $test 55 } 56 } 57 58 gdb_test "print l" " = ${l}" \ 59 "${prefix}; print old l, expecting ${l}" 60 gdb_test "print r" " = ${r}" \ 61 "${prefix}; print old r, expecting ${r}" 62 gdb_test_no_output "set variable l = 4" \ 63 "${prefix}; setting l to 4" 64 gdb_test "print l" " = ${new}" \ 65 "${prefix}; print new l, expecting ${new}" 66 gdb_test "next" "return l \\+ r;" \ 67 "${prefix}; next over add call" 68 gdb_test "print l" " = ${add}" \ 69 "${prefix}; print incremented l, expecting ${add}" 70} 71 72check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002." 73check_set "short" "-1" "-2" "4" "2" 74check_set "int" "-1" "-2" "4" "2" 75check_set "long" "-1" "-2" "4" "2" 76check_set "longest" "-1" "-2" "4" "2" 77check_set "float" "-1" "-2" "4" "2" 78check_set "double" "-1" "-2" "4" "2" 79check_set "doublest" "-1" "-2" "4" "2" 80 81# 82 83proc up_set { t l r new } { 84 set prefix "upvar ${t} l" 85 gdb_test "tbreak add_${t}" 86 gdb_test "continue" "return u . v;" \ 87 "continue to add_${t}" 88 gdb_test "up" "l = add_${t} .l, r.;" \ 89 "${prefix}; up" 90 gdb_test "print l" " = ${l}" \ 91 "${prefix}; print old l, expecting ${l}" 92 gdb_test "print r" " = ${r}" \ 93 "${prefix}; print old r, expecting ${r}" 94 gdb_test_no_output "set variable l = 4" \ 95 "${prefix}; set l to 4" 96 gdb_test "print l" " = ${new}" \ 97 "${prefix}; print new l, expecting ${new}" 98} 99 100up_set "charest" "-1 .*" "-2 .*" "4 ..004." 101up_set "short" "-1" "-2" "4" 102up_set "int" "-1" "-2" "4" 103up_set "long" "-1" "-2" "4" 104up_set "longest" "-1" "-2" "4" 105up_set "float" "-1" "-2" "4" 106up_set "double" "-1" "-2" "4" 107up_set "doublest" "-1" "-2" "4" 108 109# 110 111proc check_struct { t old new } { 112 set prefix "var struct ${t} u" 113 gdb_test "tbreak wack_struct_${t}" 114 gdb_test "continue" "int i; register struct s_${t} u = z_${t};" \ 115 "continue to wack_struct_${t}" 116 gdb_test "next 2" "add_struct_${t} .u.;" \ 117 "${prefix}; next to add_struct_${t} call" 118 gdb_test "print u" " = ${old}" \ 119 "${prefix}; print old u, expecting ${old}" 120 gdb_test_no_output "set variable u = s_${t}" \ 121 "${prefix}; set u to s_${t}" 122 gdb_test "print u" " = ${new}" \ 123 "${prefix}; print new u, expecting ${new}" 124} 125 126check_struct "1" "{s = \\{0}}" "{s = \\{1}}" 127check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}" 128check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}" 129check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}" 130 131proc up_struct { t old new } { 132 set prefix "up struct ${t} u" 133 gdb_test "tbreak add_struct_${t}" 134 gdb_test "continue" "for .i = 0; i < sizeof .s. / sizeof .s.s.0..; i..." \ 135 "continue to add_struct_${t}" 136 gdb_test "up" "u = add_struct_${t} .u.;" \ 137 "${prefix}; up" 138 gdb_test "print u" " = ${old}" \ 139 "${prefix}; print old u, expecting ${old}" 140 gdb_test_no_output "set variable u = s_${t}" \ 141 "${prefix}; set u to s_${t}" 142 gdb_test "print u" " = ${new}" \ 143 "${prefix}; print new u, expecting ${new}" 144} 145 146up_struct "1" "{s = \\{0}}" "{s = \\{1}}" 147up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}" 148up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}" 149up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}" 150 151# 152 153proc check_field { t } { 154 global gdb_prompt 155 gdb_test "tbreak wack_field_${t}" 156 gdb_test "continue" "register struct f_${t} u = f_${t};" \ 157 "continue field ${t}" 158 159 # Match either the return statement, or the line immediatly after 160 # it. The compiler can end up merging the return statement into 161 # the return instruction. 162 gdb_test "next" "(return u;|\})" "next field ${t}" 163 164 gdb_test "print u" " = {i = 1, j = 1, k = 1}" "old field ${t}" 165 gdb_test_no_output "set variable u = F_${t}" 166 gdb_test "print u" " = {i = 0, j = 0, k = 0}" "new field ${t}" 167 168 gdb_test_no_output "set variable u = F_${t}, u.i = f_${t}.i" 169 gdb_test "print u" " = {i = 1, j = 0, k = 0}" "f_${t}.i" 170 171 gdb_test_no_output "set variable u = F_${t}, u.j = f_${t}.j" 172 gdb_test "print u" " = {i = 0, j = 1, k = 0}" "f_${t}.j" 173 174 gdb_test_no_output "set variable u = F_${t}, u.k = f_${t}.k" 175 gdb_test "print u" " = {i = 0, j = 0, k = 1}" "f_${t}.k" 176 177 gdb_test_no_output "set variable u = f_${t}, u.i = F_${t}.i" 178 gdb_test "print u" " = {i = 0, j = 1, k = 1}" "F_${t}.i" 179 180 gdb_test_no_output "set variable u = f_${t}, u.j = F_${t}.j" 181 gdb_test "print u" " = {i = 1, j = 0, k = 1}" "F_${t}.j" 182 183 gdb_test_no_output "set variable u = f_${t}, u.k = F_${t}.k" 184 gdb_test "print u" " = {i = 1, j = 1, k = 0}" "F_${t}.k" 185 186} 187 188check_field 1 189check_field 2 190check_field 3 191check_field 4 192 193# 194 195# WANTED: A fairly portable way of convincing the compiler to split a 196# value across memory and registers. 197 198