gdb/testsuite/gdb.base/store.exp

   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
  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     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
  72 check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002."
  73 check_set "short" "-1" "-2" "4" "2"
  74 check_set "int" "-1" "-2" "4" "2"
  75 check_set "long" "-1" "-2" "4" "2"
  76 check_set "longest" "-1" "-2" "4" "2"
  77 check_set "float" "-1" "-2" "4" "2"
  78 check_set "double" "-1" "-2" "4" "2"
  79 check_set "doublest" "-1" "-2" "4" "2"
  80
  81 #
  82
  83 proc 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
 100 up_set "charest" "-1 .*" "-2 .*" "4 ..004."
 101 up_set "short" "-1" "-2" "4"
 102 up_set "int" "-1" "-2" "4"
 103 up_set "long" "-1" "-2" "4"
 104 up_set "longest" "-1" "-2" "4"
 105 up_set "float" "-1" "-2" "4"
 106 up_set "double" "-1" "-2" "4"
 107 up_set "doublest" "-1" "-2" "4"
 108
 109 #
 110
 111 proc 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
 126 check_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 127 check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 128 check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 129 check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 130
 131 proc 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 ${new}"
 144 }
 145
 146 up_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 147 up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 148 up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 149 up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 150
 151 #
 152
 153 proc check_field { t } {
 154     global gdb_prompt
 155     gdb_test "tbreak wack_field_${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
 188 check_field 1
 189 check_field 2
 190 check_field 3
 191 check_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