gdb/testsuite/gdb.base/store.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2002, 2003, 2004, 2007 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 2 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, write to the Free Software
  17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19 if $tracelevel {
  20     strace $tracelevel
  21 }
  22
  23 #
  24 # test running programs
  25 #
  26 set prms_id 0
  27 set bug_id 0
  28
  29 set testfile "store"
  30 set srcfile ${testfile}.c
  31 set binfile ${objdir}/${subdir}/${testfile}
  32 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  33     untested store.exp
  34     return -1
  35 }
  36
  37 if [get_compiler_info ${binfile}] {
  38     return -1;
  39 }
  40
  41 gdb_exit
  42 gdb_start
  43 gdb_reinitialize_dir $srcdir/$subdir
  44 gdb_load ${binfile}
  45
  46 #
  47 # set it up at a breakpoint so we can play with the variable values
  48 #
  49
  50 if ![runto_main] then {
  51     perror "couldn't run to breakpoint"
  52     continue
  53 }
  54
  55 #
  56
  57 proc check_set { t l r new add } {
  58     set prefix "var ${t} l"
  59     gdb_test "tbreak wack_${t}"
  60     gdb_test "continue" "register ${t} l = u, r = v;" \
  61         "continue to wack_${t}"
  62     gdb_test "next" "l = add_${t} .l, r.;" \
  63         "${prefix}; next ${t}"
  64     gdb_test "print l" " = ${l}" \
  65         "${prefix}; print old l, expecting ${l}"
  66     gdb_test "print r" " = ${r}" \
  67         "${prefix}; print old r, expecting ${r}"
  68     gdb_test "set variable l = 4" "" \
  69         "${prefix}; setting l to 4"
  70     gdb_test "print l" " = ${new}" \
  71         "${prefix}; print new l, expecting ${l}"
  72     gdb_test "next" "return l \\+ r;" \
  73         "${prefix}; next over add call"
  74     gdb_test "print l" " = ${add}" \
  75         "${prefix}; print incremented l, expecting ${add}"
  76 }
  77
  78 check_set "charest" "-1 .*" "-2 .*" "4 ..004." "2 ..002."
  79 check_set "short" "-1" "-2" "4" "2"
  80 check_set "int" "-1" "-2" "4" "2"
  81 check_set "long" "-1" "-2" "4" "2"
  82 check_set "longest" "-1" "-2" "4" "2"
  83 check_set "float" "-1" "-2" "4" "2"
  84 check_set "double" "-1" "-2" "4" "2"
  85 check_set "doublest" "-1" "-2" "4" "2"
  86
  87 #
  88
  89 proc up_set { t l r new } {
  90     set prefix "upvar ${t} l"
  91     gdb_test "tbreak add_${t}"
  92     gdb_test "continue" "return u . v;" \
  93         "continue to add_${t}"
  94     gdb_test "up" "l = add_${t} .l, r.;" \
  95         "${prefix}; up"
  96     gdb_test "print l" " = ${l}" \
  97         "${prefix}; print old l, expecting ${l}"
  98     gdb_test "print r" " = ${r}" \
  99         "${prefix}; print old r, expecting ${r}"
 100     gdb_test "set variable l = 4" "" \
 101         "${prefix}; set l to 4"
 102     gdb_test "print l" " = ${new}" \
 103         "${prefix}; print new l, expecting ${new}"
 104 }
 105
 106 up_set "charest" "-1 .*" "-2 .*" "4 ..004."
 107 up_set "short" "-1" "-2" "4"
 108 up_set "int" "-1" "-2" "4"
 109 up_set "long" "-1" "-2" "4"
 110 up_set "longest" "-1" "-2" "4"
 111 up_set "float" "-1" "-2" "4"
 112 up_set "double" "-1" "-2" "4"
 113 up_set "doublest" "-1" "-2" "4"
 114
 115 #
 116
 117 proc check_struct { t old new } {
 118     set prefix "var struct ${t} u"
 119     gdb_test "tbreak wack_struct_${t}"
 120     gdb_test "continue" "int i; register struct s_${t} u = z_${t};" \
 121         "continue to wack_struct_${t}"
 122     gdb_test "next 2" "add_struct_${t} .u.;" \
 123         "${prefix}; next to add_struct_${t} call"
 124     gdb_test "print u" " = ${old}" \
 125         "${prefix}; print old u, expecting ${old}"
 126     gdb_test "set variable u = s_${t}" "" \
 127         "${prefix}; set u to s_${t}"
 128     gdb_test "print u" " = ${new}" \
 129         "${prefix}; print new u, expecting ${new}"
 130 }
 131
 132 check_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 133 check_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 134 check_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 135 check_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 136
 137 proc up_struct { t old new } {
 138     set prefix "up struct ${t} u"
 139     gdb_test "tbreak add_struct_${t}"
 140     gdb_test "continue" "for .i = 0; i < sizeof .s. / sizeof .s.s.0..; i..." \
 141         "continue to add_struct_${t}"
 142     gdb_test "up" "u = add_struct_${t} .u.;" \
 143         "${prefix}; up"
 144     gdb_test "print u" " = ${old}" \
 145         "${prefix}; print old u, expecting ${old}"
 146     gdb_test "set variable u = s_${t}" "" \
 147         "${prefix}; set u to s_${t}"
 148     gdb_test "print u" " = ${new}" \
 149         "${prefix}; print new u, expecting ${new}"
 150 }
 151
 152 up_struct "1" "{s = \\{0}}" "{s = \\{1}}"
 153 up_struct "2" "{s = \\{0, 0}}" "{s = \\{1, 2}}"
 154 up_struct "3" "{s = \\{0, 0, 0}}" "{s = \\{1, 2, 3}}"
 155 up_struct "4" "{s = \\{0, 0, 0, 0}}" "{s = \\{1, 2, 3, 4}}"
 156
 157 #
 158
 159 proc check_field { t } {
 160     global gdb_prompt
 161     gdb_test "tbreak wack_field_${t}"
 162     gdb_test "continue" "register struct f_${t} u = f_${t};" \
 163             "continue field ${t}"
 164
 165     # Match either the return statement, or the line immediatly after
 166     # it.  The compiler can end up merging the return statement into
 167     # the return instruction.
 168     gdb_test "next" "(return u;|\})" "next field ${t}"
 169
 170     gdb_test "print u" " = {i = 1, j = 1, k = 1}" "old field ${t}"
 171     gdb_test "set variable u = F_${t}"
 172     gdb_test "print u" " = {i = 0, j = 0, k = 0}" "new field ${t}"
 173
 174     gdb_test "set variable u = F_${t}, u.i = f_${t}.i"
 175     gdb_test "print u" " = {i = 1, j = 0, k = 0}" "f_${t}.i"
 176
 177     gdb_test "set variable u = F_${t}, u.j = f_${t}.j"
 178     gdb_test "print u" " = {i = 0, j = 1, k = 0}" "f_${t}.j"
 179
 180     gdb_test "set variable u = F_${t}, u.k = f_${t}.k"
 181     gdb_test "print u" " = {i = 0, j = 0, k = 1}" "f_${t}.k"
 182
 183     gdb_test "set variable u = f_${t}, u.i = F_${t}.i"
 184     gdb_test "print u" " = {i = 0, j = 1, k = 1}" "F_${t}.i"
 185
 186     gdb_test "set variable u = f_${t}, u.j = F_${t}.j"
 187     gdb_test "print u" " = {i = 1, j = 0, k = 1}" "F_${t}.j"
 188
 189     gdb_test "set variable u = f_${t}, u.k = F_${t}.k"
 190     gdb_test "print u" " = {i = 1, j = 1, k = 0}" "F_${t}.k"
 191
 192 }
 193
 194 check_field 1
 195 check_field 2
 196 check_field 3
 197 check_field 4
 198
 199 #
 200
 201 # WANTED: A fairly portable way of convincing the compiler to split a
 202 # value across memory and registers.
 203