gdb/testsuite/gdb.base/condbreak.exp

   1 # Copyright 1997, 1998, 1999, 2000, 2001, 2003, 2007, 2008
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 # This test was written by Rich Title.
  18 # Purpose is to test conditional breakpoints.
  19 # Modeled after "break.exp".
  20
  21 if $tracelevel then {
  22         strace $tracelevel
  23         }
  24
  25 global usestubs
  26
  27 #
  28 # test running programs
  29 #
  30 set prms_id 0
  31 set bug_id 0
  32
  33 set testfile "break"
  34 set srcfile ${testfile}.c
  35 set srcfile1 ${testfile}1.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37
  38 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}0.o" object {debug nowarnings}] != "" } {
  39      untested condbreak.exp
  40      return -1
  41 }
  42
  43 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile1}" "${binfile}1.o" object {debug nowarnings}] != "" } {
  44      untested condbreak.exp
  45      return -1
  46 }
  47
  48 if  { [gdb_compile "${binfile}0.o ${binfile}1.o" "${binfile}" executable {debug nowarnings}] != "" } {
  49      untested condbreak.exp
  50      return -1
  51 }
  52
  53 if [get_compiler_info ${binfile}] {
  54     return -1;
  55 }
  56
  57 gdb_exit
  58 gdb_start
  59 gdb_reinitialize_dir $srcdir/$subdir
  60 gdb_load ${binfile}
  61
  62
  63 if [target_info exists gdb_stub] {
  64     gdb_step_for_stub;
  65 }
  66
  67 set bp_location1  [gdb_get_line_number "set breakpoint 1 here"]
  68 set bp_location6  [gdb_get_line_number "set breakpoint 6 here"]
  69 set bp_location8  [gdb_get_line_number "set breakpoint 8 here" $srcfile1]
  70 set bp_location9  [gdb_get_line_number "set breakpoint 9 here" $srcfile1]
  71 set bp_location15 [gdb_get_line_number "set breakpoint 15 here" $srcfile1]
  72 set bp_location16 [gdb_get_line_number "set breakpoint 16 here" $srcfile1]
  73
  74 #
  75 # test break at function
  76 #
  77 gdb_test "break main" \
  78     "Breakpoint.*at.* file .*$srcfile, line.*" \
  79     "breakpoint function"
  80
  81 #
  82 # test conditional break at function
  83 #
  84 gdb_test "break marker1 if 1==1" \
  85     "Breakpoint.*at.* file .*$srcfile1, line.*"
  86
  87 gdb_test "delete 2" ""
  88
  89 #
  90 # test conditional break at line number
  91 #
  92 gdb_test "break $srcfile:$bp_location1 if 1==1" \
  93     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\."
  94
  95 gdb_test "delete 3" ""
  96
  97 #
  98 # test conditional break at function
  99 #
 100 gdb_test "break marker1 if (1==1)" \
 101     "Breakpoint.*at.* file .*$srcfile1, line.*"
 102
 103 #
 104 # test conditional break at line number
 105 #
 106 gdb_test "break $srcfile:$bp_location1 if (1==1)" \
 107     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\."
 108
 109 gdb_test "break marker2 if (a==43)" \
 110     "Breakpoint.*at.* file .*$srcfile1, line.*"
 111
 112 #
 113 # check to see what breakpoints are set
 114 #
 115
 116 if {$hp_aCC_compiler} {
 117     set marker1_proto "\\(void\\)"
 118     set marker2_proto "\\(int\\)"
 119 } else {
 120     set marker1_proto ""
 121     set marker2_proto ""
 122 }
 123
 124 gdb_test "info break" \
 125     "Num     Type\[ \]+Disp Enb Address\[ \]+What.*
 126 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location6.*
 127 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker1$marker1_proto at .*$srcfile1:($bp_location15|$bp_location16).*
 128 \[\t \]+stop only if \\(1==1\\).*
 129 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location1.*
 130 \[\t \]+stop only if \\(1==1\\).*
 131 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker2$marker2_proto at .*$srcfile1:($bp_location8|$bp_location9).*
 132 \[\t \]+stop only if \\(a==43\\).*" \
 133     "breakpoint info"
 134
 135
 136 #
 137 # run until the breakpoint at main is hit.
 138 #
 139
 140
 141 rerun_to_main
 142
 143 #
 144 # run until the breakpoint at a line number
 145 #
 146 gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \
 147                         "run until breakpoint set at a line number"
 148
 149 #
 150 # run until the breakpoint at marker1
 151 #
 152 # If the inferior stops at the first instruction of a source line, GDB
 153 # won't print the actual PC value; the source line is enough to
 154 # exactly specify the PC.  But if the inferior is instead stopped in
 155 # the midst of a source line, GDB will include the PC in the
 156 # breakpoint hit message.  This way, GDB always provides the exact
 157 # stop location, but avoids clutter when possible.
 158 #
 159 # Suppose you have a function written completely on one source line, like:
 160 #    int foo (int x) { return 0; }
 161 # Setting a breakpoint at `foo' actually places the breakpoint after
 162 # foo's prologue.
 163 #
 164 # GCC's STABS writer always emits a line entry attributing the
 165 # prologue instructions to the line containing the function's open
 166 # brace, even if the first user instruction is also on that line.
 167 # This means that, in the case of a one-line function, you will get
 168 # two line entries in the debug info for the same line: one at the
 169 # function's entry point, and another at the first user instruction.
 170 # GDB preserves these duplicated line entries, and prefers the later
 171 # one; thus, when the program stops after the prologue, at the first
 172 # user instruction, GDB's search finds the second line entry, decides
 173 # that the PC is indeed at the beginning of a source line, and doesn't
 174 # print an address in the breakpoint hit message.
 175 #
 176 # GCC's Dwarf2 writer, on the other hand, squeezes out duplicate line
 177 # entries, so GDB considers the source line to begin at the start of
 178 # the function's prologue.  Thus, if the program stops at the
 179 # breakpoint, GDB will decide that the PC is not at the beginning of a
 180 # source line, and will print an address.
 181 #
 182 # I think the Dwarf2 writer's behavior is arguably correct, but not
 183 # helpful.  If the user sets a breakpoint at that source line, they
 184 # want that breakpoint to fall after the prologue.  Identifying the
 185 # prologue's code with the opening brace is nice, but it shouldn't
 186 # take precedence over real code.
 187 #
 188 # Until the Dwarf2 writer gets fixed, I'm going to XFAIL its behavior.
 189 send_gdb "continue\n"
 190 gdb_expect {
 191     -re  "Continuing\\..*Breakpoint \[0-9\]+, marker1 \\(\\) at .*$srcfile1:($bp_location15|$bp_location16).*($bp_location15|$bp_location16)\[\t \]+.*$gdb_prompt $" {
 192         pass "run until breakpoint at marker1"
 193     }
 194     -re  "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker1 \\(\\) at .*$srcfile1:($bp_location15|$bp_location16).*($bp_location15|$bp_location16)\[\t \]+.*$gdb_prompt $" {
 195         xfail "run until breakpoint at marker1"
 196     }
 197     -re "$gdb_prompt $" {
 198         fail "run until breakpoint at marker1"
 199     }
 200     timeout {
 201         fail "(timeout) run until breakpoint at marker1"
 202     }
 203 }
 204
 205 # run until the breakpoint at marker2
 206 # Same issues here as above.
 207 setup_xfail hppa2.0w-*-* 11512CLLbs
 208 send_gdb "continue\n"
 209 gdb_expect {
 210     -re "Continuing\\..*Breakpoint \[0-9\]+, marker2 \\(a=43\\) at .*$srcfile1:($bp_location8|$bp_location9).*($bp_location8|$bp_location9)\[\t \]+.*" {
 211         pass "run until breakpoint at marker2"
 212     }
 213     -re "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker2 \\(a=43\\) at .*$srcfile1:($bp_location8|$bp_location9).*($bp_location8|$bp_location9)\[\t \]+.*" {
 214         xfail "run until breakpoint at marker2"
 215     }
 216     -re "$gdb_prompt $" {
 217         fail "run until breakpoint at marker2"
 218     }
 219     timeout {
 220         fail "(timeout) run until breakpoint at marker2"
 221     }
 222 }