gdb/testsuite/gdb.base/store.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2002-2024 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 #
  26 # set it up at a breakpoint so we can play with the variable values
  27 #
  28
  29 if {![runto_main]} {
  30     return
  31 }
  32
  33 #
  34
  35 proc check_set { t l r new add } {
  36     global gdb_prompt
  37
  38     set prefix "var ${t} l"
  39     gdb_test "tbreak wack_${t}"
  40
  41     set test "continue to wack_${t}"
  42     gdb_test_multiple "continue" $test {
  43         -re "register ${t} l = u, r = v;\r\n$gdb_prompt $" {
  44             # See GCC PR debug/53948.
  45             send_gdb "next\n"
  46             exp_continue
  47         }
  48         -re "l = add_${t} .l, r.;\r\n$gdb_prompt $" {
  49             pass $test
  50         }
  51     }
  52
  53     set supported_l 1
  54     set test "${prefix}; print old l, expecting ${l}"
  55     gdb_test_multiple "print l" "$test"  {
  56         -re -wrap " = <optimized out>" {
  57             unsupported $test
  58             set supported_l 0
  59         }
  60         -re -wrap " = ${l}" {
  61             pass $test
  62         }
  63     }
  64
  65     set test "${prefix}; print old r, expecting ${r}"
  66     gdb_test_multiple "print r" "$test"  {
  67         -re -wrap " = <optimized out>" {
  68             unsupported $test
  69         }
  70         -re -wrap " = ${r}" {
  71             pass $test
  72         }
  73     }
  74
  75     if { $supported_l } {
  76         gdb_test_no_output "set variable l = 4" \
  77             "${prefix}; setting l to 4"
  78         gdb_test "print l" " = ${new}" \
  79             "${prefix}; print new l, expecting ${new}"
  80     }
  81     gdb_test "next" "return l \\+ r;" \
  82         "${prefix}; next over add call"
  83     if { $supported_l } {
  84         gdb_test "print l" " = ${add}" \
  85             "${prefix}; print incremented l, expecting ${add}"
  86     }
  87 }
  88
  89 check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002."
  90 check_set "short" "-1" "-2" "4" "2"
  91 check_set "int" "-1" "-2" "4" "2"
  92 check_set "long" "-1" "-2" "4" "2"
  93 check_set "longest" "-1" "-2" "4" "2"
  94 check_set "float" "-1" "-2" "4" "2"
  95 check_set "double" "-1" "-2" "4" "2"
  96 check_set "doublest" "-1" "-2" "4" "2"
  97
  98 #
  99
 100 proc up_set { t l r new } {
 101     global gdb_prompt
 102
 103     set prefix "upvar ${t} l"
 104     gdb_test "tbreak add_${t}"
 105     gdb_test "continue" "return u . v;" \
 106         "continue to add_${t}"
 107     gdb_test "up" "l = add_${t} .l, r.;" \
 108         "${prefix}; up"
 109
 110     set supported_l 1
 111     set test "${prefix}; print old l, expecting ${l}"
 112     gdb_test_multiple "print l" "$test"  {
 113         -re -wrap " = <optimized out>" {
 114             unsupported $test
 115             set supported_l 0
 116         }
 117         -re -wrap " = ${l}" {
 118             pass $test
 119         }
 120     }
 121
 122     set test "${prefix}; print old r, expecting ${r}"
 123     gdb_test_multiple "print r" "$test"  {
 124         -re -wrap " = <optimized out>" {
 125             unsupported $test
 126         }
 127         -re -wrap " = ${r}" {
 128             pass $test
 129         }
 130     }
 131
 132     if { $supported_l } {
 133         gdb_test_no_output "set variable l = 4" \
 134             "${prefix}; set l to 4"
 135         gdb_test "print l" " = ${new}" \
 136             "${prefix}; print new l, expecting ${new}"
 137     }
 138 }
 139
 140 up_set "charest" "-1 .*" "-2 .*" "4 ..004."
 141 up_set "short" "-1" "-2" "4"
 142 up_set "int" "-1" "-2" "4"
 143 up_set "long" "-1" "-2" "4"
 144 up_set "longest" "-1" "-2" "4"
 145 up_set "float" "-1" "-2" "4"
 146 up_set "double" "-1" "-2" "4"
 147 up_set "doublest" "-1" "-2" "4"
 148
 149 #
 150
 151 proc check_struct { t old new } {
 152     set prefix "var struct ${t} u"
 153     gdb_test "tbreak wack_struct_${t}"
 154     gdb_test "continue" "int i; register struct s_${t} u = z_${t};" \
 155         "continue to wack_struct_${t}"
 156     gdb_test "next 2" "add_struct_${t} .u.;" \
 157         "${prefix}; next to add_struct_${t} call"
 158     gdb_test "print u" " = ${old}" \
 159         "${prefix}; print old u, expecting ${old}"
 160     gdb_test_no_output "set variable u = s_${t}" \
 161         "${prefix}; set u to s_${t}"
 162     gdb_test "print u" " = ${new}" \
 163         "${prefix}; print new u, expecting ${new}"
 164 }
 165
 166 check_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 167 check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 168 check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 169 check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 170
 171 proc up_struct { t old new } {
 172     set prefix "up struct ${t} u"
 173     gdb_test "tbreak add_struct_${t}"
 174     gdb_test "continue" "for .i = 0; i < sizeof .s. / sizeof .s.s.0..; i..." \
 175         "continue to add_struct_${t}"
 176     gdb_test "up" "u = add_struct_${t} .u.;" \
 177         "${prefix}; up"
 178     gdb_test "print u" " = ${old}" \
 179         "${prefix}; print old u, expecting ${old}"
 180     gdb_test_no_output "set variable u = s_${t}" \
 181         "${prefix}; set u to s_${t}"
 182     gdb_test "print u" " = ${new}" \
 183         "${prefix}; print new u, expecting ${new}"
 184 }
 185
 186 up_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 187 up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 188 up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 189 up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 190
 191 #
 192
 193 proc check_field { t } {
 194     global gdb_prompt
 195     gdb_test "tbreak wack_field_${t}"
 196     gdb_test "continue" "register struct f_${t} u = f_${t};" \
 197             "continue field ${t}"
 198
 199     # Match either the return statement, or the line immediatly after
 200     # it.  The compiler can end up merging the return statement into
 201     # the return instruction.
 202     gdb_test "next" "(return u;|\})" "next field ${t}"
 203
 204     gdb_test "print u" " = {i = 1, j = 1, k = 1}" "old field ${t}"
 205     gdb_test_no_output "set variable u = F_${t}"
 206     gdb_test "print u" " = {i = 0, j = 0, k = 0}" "new field ${t}"
 207
 208     gdb_test_no_output "set variable u = F_${t}, u.i = f_${t}.i"
 209     gdb_test "print u" " = {i = 1, j = 0, k = 0}" "f_${t}.i"
 210
 211     gdb_test_no_output "set variable u = F_${t}, u.j = f_${t}.j"
 212     gdb_test "print u" " = {i = 0, j = 1, k = 0}" "f_${t}.j"
 213
 214     gdb_test_no_output "set variable u = F_${t}, u.k = f_${t}.k"
 215     gdb_test "print u" " = {i = 0, j = 0, k = 1}" "f_${t}.k"
 216
 217     gdb_test_no_output "set variable u = f_${t}, u.i = F_${t}.i"
 218     gdb_test "print u" " = {i = 0, j = 1, k = 1}" "F_${t}.i"
 219
 220     gdb_test_no_output "set variable u = f_${t}, u.j = F_${t}.j"
 221     gdb_test "print u" " = {i = 1, j = 0, k = 1}" "F_${t}.j"
 222
 223     gdb_test_no_output "set variable u = f_${t}, u.k = F_${t}.k"
 224     gdb_test "print u" " = {i = 1, j = 1, k = 0}" "F_${t}.k"
 225
 226 }
 227
 228 check_field 1
 229 check_field 2
 230 check_field 3
 231 check_field 4
 232
 233 #
 234
 235 # WANTED: A fairly portable way of convincing the compiler to split a
 236 # value across memory and registers.
 237