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 $test
  55         }
  56     }
  57
  58     set supported 1
  59     set test "${prefix}; print old l, expecting ${l}"
  60     gdb_test_multiple "print l" "$test"  {
  61         -re " = <optimized out>\r\n$gdb_prompt $" {
  62             unsupported $test
  63             set supported 0
  64         }
  65         -re " = ${l}\r\n$gdb_prompt $" {
  66             pass $test
  67         }
  68     }
  69     if { $supported } {
  70         gdb_test "print r" " = ${r}" \
  71             "${prefix}; print old r, expecting ${r}"
  72         gdb_test_no_output "set variable l = 4" \
  73             "${prefix}; setting l to 4"
  74         gdb_test "print l" " = ${new}" \
  75             "${prefix}; print new l, expecting ${new}"
  76         gdb_test "next" "return l \\+ r;" \
  77             "${prefix}; next over add call"
  78         gdb_test "print l" " = ${add}" \
  79             "${prefix}; print incremented l, expecting ${add}"
  80     }
  81 }
  82
  83 check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002."
  84 check_set "short" "-1" "-2" "4" "2"
  85 check_set "int" "-1" "-2" "4" "2"
  86 check_set "long" "-1" "-2" "4" "2"
  87 check_set "longest" "-1" "-2" "4" "2"
  88 check_set "float" "-1" "-2" "4" "2"
  89 check_set "double" "-1" "-2" "4" "2"
  90 check_set "doublest" "-1" "-2" "4" "2"
  91
  92 #
  93
  94 proc up_set { t l r new } {
  95     global gdb_prompt
  96
  97     set prefix "upvar ${t} l"
  98     gdb_test "tbreak add_${t}"
  99     gdb_test "continue" "return u . v;" \
 100         "continue to add_${t}"
 101     gdb_test "up" "l = add_${t} .l, r.;" \
 102         "${prefix}; up"
 103
 104     set supported 1
 105     set test "${prefix}; print old l, expecting ${l}"
 106     gdb_test_multiple "print l" "$test"  {
 107         -re " = <optimized out>\r\n$gdb_prompt $" {
 108             unsupported $test
 109             set supported 0
 110         }
 111         -re " = ${l}\r\n$gdb_prompt $" {
 112             pass $test
 113         }
 114     }
 115     if { $supported } {
 116         gdb_test "print r" " = ${r}" \
 117             "${prefix}; print old r, expecting ${r}"
 118         gdb_test_no_output "set variable l = 4" \
 119             "${prefix}; set l to 4"
 120         gdb_test "print l" " = ${new}" \
 121             "${prefix}; print new l, expecting ${new}"
 122     }
 123 }
 124
 125 up_set "charest" "-1 .*" "-2 .*" "4 ..004."
 126 up_set "short" "-1" "-2" "4"
 127 up_set "int" "-1" "-2" "4"
 128 up_set "long" "-1" "-2" "4"
 129 up_set "longest" "-1" "-2" "4"
 130 up_set "float" "-1" "-2" "4"
 131 up_set "double" "-1" "-2" "4"
 132 up_set "doublest" "-1" "-2" "4"
 133
 134 #
 135
 136 proc check_struct { t old new } {
 137     set prefix "var struct ${t} u"
 138     gdb_test "tbreak wack_struct_${t}"
 139     gdb_test "continue" "int i; register struct s_${t} u = z_${t};" \
 140         "continue to wack_struct_${t}"
 141     gdb_test "next 2" "add_struct_${t} .u.;" \
 142         "${prefix}; next to add_struct_${t} call"
 143     gdb_test "print u" " = ${old}" \
 144         "${prefix}; print old u, expecting ${old}"
 145     gdb_test_no_output "set variable u = s_${t}" \
 146         "${prefix}; set u to s_${t}"
 147     gdb_test "print u" " = ${new}" \
 148         "${prefix}; print new u, expecting ${new}"
 149 }
 150
 151 check_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 152 check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 153 check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 154 check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 155
 156 proc up_struct { t old new } {
 157     set prefix "up struct ${t} u"
 158     gdb_test "tbreak add_struct_${t}"
 159     gdb_test "continue" "for .i = 0; i < sizeof .s. / sizeof .s.s.0..; i..." \
 160         "continue to add_struct_${t}"
 161     gdb_test "up" "u = add_struct_${t} .u.;" \
 162         "${prefix}; up"
 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 ${new}"
 169 }
 170
 171 up_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 172 up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 173 up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 174 up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 175
 176 #
 177
 178 proc check_field { t } {
 179     global gdb_prompt
 180     gdb_test "tbreak wack_field_${t}"
 181     gdb_test "continue" "register struct f_${t} u = f_${t};" \
 182             "continue field ${t}"
 183
 184     # Match either the return statement, or the line immediatly after
 185     # it.  The compiler can end up merging the return statement into
 186     # the return instruction.
 187     gdb_test "next" "(return u;|\})" "next field ${t}"
 188
 189     gdb_test "print u" " = {i = 1, j = 1, k = 1}" "old field ${t}"
 190     gdb_test_no_output "set variable u = F_${t}"
 191     gdb_test "print u" " = {i = 0, j = 0, k = 0}" "new field ${t}"
 192
 193     gdb_test_no_output "set variable u = F_${t}, u.i = f_${t}.i"
 194     gdb_test "print u" " = {i = 1, j = 0, k = 0}" "f_${t}.i"
 195
 196     gdb_test_no_output "set variable u = F_${t}, u.j = f_${t}.j"
 197     gdb_test "print u" " = {i = 0, j = 1, k = 0}" "f_${t}.j"
 198
 199     gdb_test_no_output "set variable u = F_${t}, u.k = f_${t}.k"
 200     gdb_test "print u" " = {i = 0, j = 0, k = 1}" "f_${t}.k"
 201
 202     gdb_test_no_output "set variable u = f_${t}, u.i = F_${t}.i"
 203     gdb_test "print u" " = {i = 0, j = 1, k = 1}" "F_${t}.i"
 204
 205     gdb_test_no_output "set variable u = f_${t}, u.j = F_${t}.j"
 206     gdb_test "print u" " = {i = 1, j = 0, k = 1}" "F_${t}.j"
 207
 208     gdb_test_no_output "set variable u = f_${t}, u.k = F_${t}.k"
 209     gdb_test "print u" " = {i = 1, j = 1, k = 0}" "F_${t}.k"
 210
 211 }
 212
 213 check_field 1
 214 check_field 2
 215 check_field 3
 216 check_field 4
 217
 218 #
 219
 220 # WANTED: A fairly portable way of convincing the compiler to split a
 221 # value across memory and registers.
 222