gdb/testsuite/gdb.base/store.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2002-2020 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
  18 standard_testfile
  19 set executable $testfile
  20
  21 if { [prepare_for_testing "failed to prepare" $executable $srcfile] } {
  22     return -1
  23 }
  24
  25 if [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
  33 if ![runto_main] then {
  34     perror "couldn't run to breakpoint"
  35     continue
  36 }
  37
  38 #
  39
  40 proc 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 $test
  55         }
  56     }
  57
  58     set supported_l 1
  59     set test "${prefix}; print old l, expecting ${l}"
  60     gdb_test_multiple "print l" "$test"  {
  61         -re -wrap " = <optimized out>" {
  62             unsupported $test
  63             set supported_l 0
  64         }
  65         -re -wrap " = ${l}" {
  66             pass $test
  67         }
  68     }
  69
  70     set test "${prefix}; print old r, expecting ${r}"
  71     gdb_test_multiple "print r" "$test"  {
  72         -re -wrap " = <optimized out>" {
  73             unsupported $test
  74         }
  75         -re -wrap " = ${r}" {
  76             pass $test
  77         }
  78     }
  79
  80     if { $supported_l } {
  81         gdb_test_no_output "set variable l = 4" \
  82             "${prefix}; setting l to 4"
  83         gdb_test "print l" " = ${new}" \
  84             "${prefix}; print new l, expecting ${new}"
  85     }
  86     gdb_test "next" "return l \\+ r;" \
  87         "${prefix}; next over add call"
  88     if { $supported_l } {
  89         gdb_test "print l" " = ${add}" \
  90             "${prefix}; print incremented l, expecting ${add}"
  91     }
  92 }
  93
  94 check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002."
  95 check_set "short" "-1" "-2" "4" "2"
  96 check_set "int" "-1" "-2" "4" "2"
  97 check_set "long" "-1" "-2" "4" "2"
  98 check_set "longest" "-1" "-2" "4" "2"
  99 check_set "float" "-1" "-2" "4" "2"
 100 check_set "double" "-1" "-2" "4" "2"
 101 check_set "doublest" "-1" "-2" "4" "2"
 102
 103 #
 104
 105 proc up_set { t l r new } {
 106     global gdb_prompt
 107
 108     set prefix "upvar ${t} l"
 109     gdb_test "tbreak add_${t}"
 110     gdb_test "continue" "return u . v;" \
 111         "continue to add_${t}"
 112     gdb_test "up" "l = add_${t} .l, r.;" \
 113         "${prefix}; up"
 114
 115     set supported_l 1
 116     set test "${prefix}; print old l, expecting ${l}"
 117     gdb_test_multiple "print l" "$test"  {
 118         -re -wrap " = <optimized out>" {
 119             unsupported $test
 120             set supported_l 0
 121         }
 122         -re -wrap " = ${l}" {
 123             pass $test
 124         }
 125     }
 126
 127     set test "${prefix}; print old r, expecting ${r}"
 128     gdb_test_multiple "print r" "$test"  {
 129         -re -wrap " = <optimized out>" {
 130             unsupported $test
 131         }
 132         -re -wrap " = ${r}" {
 133             pass $test
 134         }
 135     }
 136
 137     if { $supported_l } {
 138         gdb_test_no_output "set variable l = 4" \
 139             "${prefix}; set l to 4"
 140         gdb_test "print l" " = ${new}" \
 141             "${prefix}; print new l, expecting ${new}"
 142     }
 143 }
 144
 145 up_set "charest" "-1 .*" "-2 .*" "4 ..004."
 146 up_set "short" "-1" "-2" "4"
 147 up_set "int" "-1" "-2" "4"
 148 up_set "long" "-1" "-2" "4"
 149 up_set "longest" "-1" "-2" "4"
 150 up_set "float" "-1" "-2" "4"
 151 up_set "double" "-1" "-2" "4"
 152 up_set "doublest" "-1" "-2" "4"
 153
 154 #
 155
 156 proc check_struct { t old new } {
 157     set prefix "var struct ${t} u"
 158     gdb_test "tbreak wack_struct_${t}"
 159     gdb_test "continue" "int i; register struct s_${t} u = z_${t};" \
 160         "continue to wack_struct_${t}"
 161     gdb_test "next 2" "add_struct_${t} .u.;" \
 162         "${prefix}; next to add_struct_${t} call"
 163     gdb_test "print u" " = ${old}" \
 164         "${prefix}; print old u, expecting ${old}"
 165     gdb_test_no_output "set variable u = s_${t}" \
 166         "${prefix}; set u to s_${t}"
 167     gdb_test "print u" " = ${new}" \
 168         "${prefix}; print new u, expecting ${new}"
 169 }
 170
 171 check_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 172 check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 173 check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 174 check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 175
 176 proc up_struct { t old new } {
 177     set prefix "up struct ${t} u"
 178     gdb_test "tbreak add_struct_${t}"
 179     gdb_test "continue" "for .i = 0; i < sizeof .s. / sizeof .s.s.0..; i..." \
 180         "continue to add_struct_${t}"
 181     gdb_test "up" "u = add_struct_${t} .u.;" \
 182         "${prefix}; up"
 183     gdb_test "print u" " = ${old}" \
 184         "${prefix}; print old u, expecting ${old}"
 185     gdb_test_no_output "set variable u = s_${t}" \
 186         "${prefix}; set u to s_${t}"
 187     gdb_test "print u" " = ${new}" \
 188         "${prefix}; print new u, expecting ${new}"
 189 }
 190
 191 up_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 192 up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 193 up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 194 up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 195
 196 #
 197
 198 proc check_field { t } {
 199     global gdb_prompt
 200     gdb_test "tbreak wack_field_${t}"
 201     gdb_test "continue" "register struct f_${t} u = f_${t};" \
 202             "continue field ${t}"
 203
 204     # Match either the return statement, or the line immediatly after
 205     # it.  The compiler can end up merging the return statement into
 206     # the return instruction.
 207     gdb_test "next" "(return u;|\})" "next field ${t}"
 208
 209     gdb_test "print u" " = {i = 1, j = 1, k = 1}" "old field ${t}"
 210     gdb_test_no_output "set variable u = F_${t}"
 211     gdb_test "print u" " = {i = 0, j = 0, k = 0}" "new field ${t}"
 212
 213     gdb_test_no_output "set variable u = F_${t}, u.i = f_${t}.i"
 214     gdb_test "print u" " = {i = 1, j = 0, k = 0}" "f_${t}.i"
 215
 216     gdb_test_no_output "set variable u = F_${t}, u.j = f_${t}.j"
 217     gdb_test "print u" " = {i = 0, j = 1, k = 0}" "f_${t}.j"
 218
 219     gdb_test_no_output "set variable u = F_${t}, u.k = f_${t}.k"
 220     gdb_test "print u" " = {i = 0, j = 0, k = 1}" "f_${t}.k"
 221
 222     gdb_test_no_output "set variable u = f_${t}, u.i = F_${t}.i"
 223     gdb_test "print u" " = {i = 0, j = 1, k = 1}" "F_${t}.i"
 224
 225     gdb_test_no_output "set variable u = f_${t}, u.j = F_${t}.j"
 226     gdb_test "print u" " = {i = 1, j = 0, k = 1}" "F_${t}.j"
 227
 228     gdb_test_no_output "set variable u = f_${t}, u.k = F_${t}.k"
 229     gdb_test "print u" " = {i = 1, j = 1, k = 0}" "F_${t}.k"
 230
 231 }
 232
 233 check_field 1
 234 check_field 2
 235 check_field 3
 236 check_field 4
 237
 238 #
 239
 240 # WANTED: A fairly portable way of convincing the compiler to split a
 241 # value across memory and registers.
 242