gdb/testsuite/gdb.dwarf2/pieces.exp

   1 # Copyright 2010-2013 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 load_lib dwarf.exp
  16 # Test some DWARF piece operators.
  17
  18 # This test can only be run on targets which support DWARF-2 and use gas.
  19 if {![dwarf2_support]} {
  20     return 0
  21 }
  22 # This test can only be run on x86 targets.
  23 if {![is_x86_like_target]} {
  24     return 0
  25 }
  26
  27 standard_testfile .S
  28 set csrcfile ${testfile}.c
  29
  30 if {[prepare_for_testing ${testfile}.exp ${testfile} $srcfile]} {
  31     return -1
  32 }
  33
  34 if ![runto_main] {
  35     return -1
  36 }
  37
  38 # Function f1 tests a particular gdb bug involving DW_OP_piece.
  39 proc pieces_test_f1 {} {
  40     global csrcfile
  41     set line [gdb_get_line_number "f1 breakpoint" $csrcfile]
  42     gdb_test "break pieces.c:$line" "Breakpoint 2.*" \
  43         "set f1 breakpoint for pieces"
  44     gdb_continue_to_breakpoint "continue to f1 breakpoint for pieces"
  45     gdb_test "print a" " = {i = 4, j = 14}" "print a in pieces:f1"
  46     gdb_test "print a.j" " = 14" "print a.j in pieces:f1"
  47 }
  48
  49 # Function f2 tests for a bug when indexing into an array created
  50 # using DW_OP_piece.
  51 proc pieces_test_f2 {} {
  52     global csrcfile
  53     set line [gdb_get_line_number "f2 breakpoint" $csrcfile]
  54     gdb_test "break pieces.c:$line" "Breakpoint 3.*" \
  55        "set f2 breakpoint for pieces"
  56     gdb_continue_to_breakpoint "continue to f2 breakpoint for pieces"
  57     gdb_test "print a" " = .4, 14." "print a in pieces:f2"
  58     gdb_test "print a\[0\]" " = 4" "print a\[0\] in pieces:f2"
  59     gdb_test "print a\[1\]" " = 14" "print a\[1\] in pieces:f2"
  60 }
  61
  62 # Function f3 tests DW_OP_bit_piece.
  63 proc pieces_test_f3 {} {
  64     global csrcfile
  65     set line [gdb_get_line_number "f3 breakpoint" $csrcfile]
  66     gdb_test "break pieces.c:$line" "Breakpoint 4.*" \
  67        "set f3 breakpoint for pieces"
  68     gdb_continue_to_breakpoint "continue to f3 breakpoint for pieces"
  69     gdb_test "print a.i" " = 4" "print a.i in pieces:f3"
  70     gdb_test "print a.j" " = 14" "print a.j in pieces:f3"
  71     gdb_test "print a.i = 7" " = 7" "set a.i in pieces:f3"
  72     gdb_test "print a.i" " = 7" "print new a.i in pieces:f3"
  73 }
  74
  75 # Function f6 tests for an empty DW_OP_piece.
  76 proc pieces_test_f6 {} {
  77     global csrcfile
  78     set line [gdb_get_line_number "f6 breakpoint" $csrcfile]
  79     gdb_test "break pieces.c:$line" "Breakpoint 5.*" \
  80        "set f6 breakpoint for pieces"
  81     gdb_continue_to_breakpoint "continue to f6 breakpoint for pieces"
  82     gdb_test "print a" \
  83         " = {i = 7, j = 8, q = .optimized out.}" \
  84         "print a with optimized out piece"
  85     # Note: no warning for this case.
  86     gdb_test_multiple "print a.i" \
  87         "print a.i with optimized out piece" {
  88             -re "warning: some bits in computed object" {
  89                 fail "print a.i with optimized out piece"
  90             }
  91             -re " = 7" {
  92                 pass "print a.i with optimized out piece"
  93             }
  94         }
  95 }
  96
  97 pieces_test_f1
  98 pieces_test_f2
  99 pieces_test_f3
 100 pieces_test_f6