gdb/testsuite/gdb.dwarf2/pieces.exp

   1 # Copyright 2010 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
  16 # Test some DWARF piece operators.
  17
  18 # This test can only be run on targets which support DWARF-2 and use gas.
  19 # For now pick a sampling of likely targets.
  20 if {![istarget *-*-linux*]
  21     && ![istarget *-*-gnu*]
  22     && ![istarget *-*-elf*]
  23     && ![istarget *-*-openbsd*]
  24     && ![istarget arm-*-eabi*]
  25     && ![istarget powerpc-*-eabi*]} {
  26     return 0
  27 }
  28 # This test can only be run on x86 targets.
  29 if {![istarget i?86-*]} {
  30     return 0
  31 }
  32
  33 set testfile "pieces"
  34 set srcfile ${testfile}.S
  35 set csrcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}.x
  37
  38 if {[prepare_for_testing ${testfile}.exp ${testfile}.x $srcfile]} {
  39     return -1
  40 }
  41
  42 if ![runto_main] {
  43     return -1
  44 }
  45
  46 # Function f1 tests a particular gdb bug involving DW_OP_piece.
  47 proc pieces_test_f1 {} {
  48     global csrcfile
  49     set line [gdb_get_line_number "f1 breakpoint" $csrcfile]
  50     gdb_test "break pieces.c:$line" "Breakpoint 2.*" \
  51         "set f1 breakpoint for pieces"
  52     gdb_continue_to_breakpoint "continue to f1 breakpoint for pieces"
  53     gdb_test "print a" " = {i = 4, j = 14}" "print a in pieces:f1"
  54     gdb_test "print a.j" " = 14" "print a.j in pieces:f1"
  55 }
  56
  57 # Function f2 tests for a bug when indexing into an array created
  58 # using DW_OP_piece.
  59 proc pieces_test_f2 {} {
  60     global csrcfile
  61     set line [gdb_get_line_number "f2 breakpoint" $csrcfile]
  62     gdb_test "break pieces.c:$line" "Breakpoint 3.*" \
  63        "set f2 breakpoint for pieces"
  64     gdb_continue_to_breakpoint "continue to f2 breakpoint for pieces"
  65     gdb_test "print a" " = .4, 14." "print a in pieces:f2"
  66     gdb_test "print a\[0\]" " = 4" "print a\[0\] in pieces:f2"
  67     gdb_test "print a\[1\]" " = 14" "print a\[1\] in pieces:f2"
  68 }
  69
  70 # Function f3 tests DW_OP_bit_piece.
  71 proc pieces_test_f3 {} {
  72     global csrcfile
  73     set line [gdb_get_line_number "f3 breakpoint" $csrcfile]
  74     gdb_test "break pieces.c:$line" "Breakpoint 4.*" \
  75        "set f3 breakpoint for pieces"
  76     gdb_continue_to_breakpoint "continue to f3 breakpoint for pieces"
  77     gdb_test "print a.i" " = 4" "print a.i in pieces:f3"
  78     gdb_test "print a.j" " = 14" "print a.j in pieces:f3"
  79     gdb_test "print a.i = 7" " = 7" "set a.i in pieces:f3"
  80     gdb_test "print a.i" " = 7" "print new a.i in pieces:f3"
  81 }
  82
  83 # Function f6 tests for an empty DW_OP_piece.
  84 proc pieces_test_f6 {} {
  85     global csrcfile
  86     set line [gdb_get_line_number "f6 breakpoint" $csrcfile]
  87     gdb_test "break pieces.c:$line" "Breakpoint 5.*" \
  88        "set f6 breakpoint for pieces"
  89     gdb_continue_to_breakpoint "continue to f6 breakpoint for pieces"
  90     gdb_test "print a" \
  91         " = {i = 7, j = 8, q = .value optimized out.}" \
  92         "print a with optimized out piece"
  93     # Note: no warning for this case.
  94     gdb_test_multiple "print a.i" \
  95         "print a.i with optimized out piece" {
  96             -re "warning: some bits in computed object" {
  97                 fail "print a.i with optimized out piece"
  98             }
  99             -re " = 7" {
 100                 pass "print a.i with optimized out piece"
 101             }
 102         }
 103 }
 104
 105 pieces_test_f1
 106 pieces_test_f2
 107 pieces_test_f3
 108 pieces_test_f6