gdb/testsuite/gdb.base/condbreak.exp

   1 # Copyright 1997, 1998, 1999, 2000, 2001, 2003, 2007
   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 2 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, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 # Please email any bugs, comments, and/or additions to this file to:
  19 # bug-gdb@prep.ai.mit.edu
  20
  21 # This test was written by Rich Title.
  22 # Purpose is to test conditional breakpoints.
  23 # Modeled after "break.exp".
  24
  25 if $tracelevel then {
  26         strace $tracelevel
  27         }
  28
  29 global usestubs
  30
  31 #
  32 # test running programs
  33 #
  34 set prms_id 0
  35 set bug_id 0
  36
  37 set testfile "break"
  38 set srcfile ${testfile}.c
  39 set srcfile1 ${testfile}1.c
  40 set binfile ${objdir}/${subdir}/${testfile}
  41
  42 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}0.o" object {debug nowarnings}] != "" } {
  43      untested condbreak.exp
  44      return -1
  45 }
  46
  47 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile1}" "${binfile}1.o" object {debug nowarnings}] != "" } {
  48      untested condbreak.exp
  49      return -1
  50 }
  51
  52 if  { [gdb_compile "${binfile}0.o ${binfile}1.o" "${binfile}" executable {debug nowarnings}] != "" } {
  53      untested condbreak.exp
  54      return -1
  55 }
  56
  57 if [get_compiler_info ${binfile}] {
  58     return -1;
  59 }
  60
  61 gdb_exit
  62 gdb_start
  63 gdb_reinitialize_dir $srcdir/$subdir
  64 gdb_load ${binfile}
  65
  66
  67 if [target_info exists gdb_stub] {
  68     gdb_step_for_stub;
  69 }
  70
  71 set bp_location1  [gdb_get_line_number "set breakpoint 1 here"]
  72 set bp_location6  [gdb_get_line_number "set breakpoint 6 here"]
  73 set bp_location8  [gdb_get_line_number "set breakpoint 8 here" $srcfile1]
  74 set bp_location9  [gdb_get_line_number "set breakpoint 9 here" $srcfile1]
  75 set bp_location15 [gdb_get_line_number "set breakpoint 15 here" $srcfile1]
  76 set bp_location16 [gdb_get_line_number "set breakpoint 16 here" $srcfile1]
  77
  78 #
  79 # test break at function
  80 #
  81 gdb_test "break main" \
  82     "Breakpoint.*at.* file .*$srcfile, line.*" \
  83     "breakpoint function"
  84
  85 #
  86 # test conditional break at function
  87 #
  88 gdb_test "break marker1 if 1==1" \
  89     "Breakpoint.*at.* file .*$srcfile1, line.*"
  90
  91 gdb_test "delete 2" ""
  92
  93 #
  94 # test conditional break at line number
  95 #
  96 gdb_test "break $srcfile:$bp_location1 if 1==1" \
  97     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\."
  98
  99 gdb_test "delete 3" ""
 100
 101 #
 102 # test conditional break at function
 103 #
 104 gdb_test "break marker1 if (1==1)" \
 105     "Breakpoint.*at.* file .*$srcfile1, line.*"
 106
 107 #
 108 # test conditional break at line number
 109 #
 110 gdb_test "break $srcfile:$bp_location1 if (1==1)" \
 111     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\."
 112
 113 gdb_test "break marker2 if (a==43)" \
 114     "Breakpoint.*at.* file .*$srcfile1, line.*"
 115
 116 #
 117 # check to see what breakpoints are set
 118 #
 119
 120 if {$hp_aCC_compiler} {
 121     set marker1_proto "\\(void\\)"
 122     set marker2_proto "\\(int\\)"
 123 } else {
 124     set marker1_proto ""
 125     set marker2_proto ""
 126 }
 127
 128 gdb_test "info break" \
 129     "Num Type\[ \]+Disp Enb Address\[ \]+What.*
 130 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location6.*
 131 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker1$marker1_proto at .*$srcfile1:($bp_location15|$bp_location16).*
 132 \[\t \]+stop only if 1 == 1.*
 133 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location1.*
 134 \[\t \]+stop only if 1 == 1.*
 135 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker2$marker2_proto at .*$srcfile1:($bp_location8|$bp_location9).*
 136 \[\t \]+stop only if a == 43.*" \
 137     "breakpoint info"
 138
 139
 140 #
 141 # run until the breakpoint at main is hit.
 142 #
 143
 144
 145 rerun_to_main
 146
 147 #
 148 # run until the breakpoint at a line number
 149 #
 150 gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \
 151                         "run until breakpoint set at a line number"
 152
 153 #
 154 # run until the breakpoint at marker1
 155 #
 156 # If the inferior stops at the first instruction of a source line, GDB
 157 # won't print the actual PC value; the source line is enough to
 158 # exactly specify the PC.  But if the inferior is instead stopped in
 159 # the midst of a source line, GDB will include the PC in the
 160 # breakpoint hit message.  This way, GDB always provides the exact
 161 # stop location, but avoids clutter when possible.
 162 #
 163 # Suppose you have a function written completely on one source line, like:
 164 #    int foo (int x) { return 0; }
 165 # Setting a breakpoint at `foo' actually places the breakpoint after
 166 # foo's prologue.
 167 #
 168 # GCC's STABS writer always emits a line entry attributing the
 169 # prologue instructions to the line containing the function's open
 170 # brace, even if the first user instruction is also on that line.
 171 # This means that, in the case of a one-line function, you will get
 172 # two line entries in the debug info for the same line: one at the
 173 # function's entry point, and another at the first user instruction.
 174 # GDB preserves these duplicated line entries, and prefers the later
 175 # one; thus, when the program stops after the prologue, at the first
 176 # user instruction, GDB's search finds the second line entry, decides
 177 # that the PC is indeed at the beginning of a source line, and doesn't
 178 # print an address in the breakpoint hit message.
 179 #
 180 # GCC's Dwarf2 writer, on the other hand, squeezes out duplicate line
 181 # entries, so GDB considers the source line to begin at the start of
 182 # the function's prologue.  Thus, if the program stops at the
 183 # breakpoint, GDB will decide that the PC is not at the beginning of a
 184 # source line, and will print an address.
 185 #
 186 # I think the Dwarf2 writer's behavior is arguably correct, but not
 187 # helpful.  If the user sets a breakpoint at that source line, they
 188 # want that breakpoint to fall after the prologue.  Identifying the
 189 # prologue's code with the opening brace is nice, but it shouldn't
 190 # take precedence over real code.
 191 #
 192 # Until the Dwarf2 writer gets fixed, I'm going to XFAIL its behavior.
 193 send_gdb "continue\n"
 194 gdb_expect {
 195     -re  "Continuing\\..*Breakpoint \[0-9\]+, marker1 \\(\\) at .*$srcfile1:($bp_location15|$bp_location16).*($bp_location15|$bp_location16)\[\t \]+.*$gdb_prompt $" {
 196         pass "run until breakpoint at marker1"
 197     }
 198     -re  "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker1 \\(\\) at .*$srcfile1:($bp_location15|$bp_location16).*($bp_location15|$bp_location16)\[\t \]+.*$gdb_prompt $" {
 199         xfail "run until breakpoint at marker1"
 200     }
 201     -re "$gdb_prompt $" {
 202         fail "run until breakpoint at marker1"
 203     }
 204     timeout {
 205         fail "(timeout) run until breakpoint at marker1"
 206     }
 207 }
 208
 209 # run until the breakpoint at marker2
 210 # Same issues here as above.
 211 setup_xfail hppa2.0w-*-* 11512CLLbs
 212 send_gdb "continue\n"
 213 gdb_expect {
 214     -re "Continuing\\..*Breakpoint \[0-9\]+, marker2 \\(a=43\\) at .*$srcfile1:($bp_location8|$bp_location9).*($bp_location8|$bp_location9)\[\t \]+.*" {
 215         pass "run until breakpoint at marker2"
 216     }
 217     -re "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker2 \\(a=43\\) at .*$srcfile1:($bp_location8|$bp_location9).*($bp_location8|$bp_location9)\[\t \]+.*" {
 218         xfail "run until breakpoint at marker2"
 219     }
 220     -re "$gdb_prompt $" {
 221         fail "run until breakpoint at marker2"
 222     }
 223     timeout {
 224         fail "(timeout) run until breakpoint at marker2"
 225     }
 226 }