gdb/testsuite/gdb.dwarf2/pieces.exp

   1 # Copyright 2010-2024 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 # This test can only be run on x86 targets.
  20 require dwarf2_support is_x86_like_target
  21
  22 standard_testfile .S
  23 set csrcfile ${testfile}.c
  24
  25 if {[prepare_for_testing "failed to prepare" ${testfile} $srcfile]} {
  26     return -1
  27 }
  28
  29 if ![runto_main] {
  30     return -1
  31 }
  32
  33 # Function f1 tests a particular gdb bug involving DW_OP_piece.
  34 proc pieces_test_f1 {} {
  35     global csrcfile
  36     set line [gdb_get_line_number "f1 breakpoint" $csrcfile]
  37     gdb_test "break pieces.c:$line" "Breakpoint 2.*" \
  38         "set f1 breakpoint for pieces"
  39     gdb_continue_to_breakpoint "continue to f1 breakpoint for pieces"
  40     gdb_test "print a" " = {i = 4, j = 14}" "print a in pieces:f1"
  41     gdb_test "print a.j" " = 14" "print a.j in pieces:f1"
  42 }
  43
  44 # Function f2 tests for a bug when indexing into an array created
  45 # using DW_OP_piece.
  46 proc pieces_test_f2 {} {
  47     global csrcfile
  48     set line [gdb_get_line_number "f2 breakpoint" $csrcfile]
  49     gdb_test "break pieces.c:$line" "Breakpoint 3.*" \
  50        "set f2 breakpoint for pieces"
  51     gdb_continue_to_breakpoint "continue to f2 breakpoint for pieces"
  52     gdb_test "print a" " = .4, 14." "print a in pieces:f2"
  53     gdb_test "print a\[0\]" " = 4" "print a\[0\] in pieces:f2"
  54     gdb_test "print a\[1\]" " = 14" "print a\[1\] in pieces:f2"
  55 }
  56
  57 # Function f3 tests DW_OP_bit_piece.
  58 proc pieces_test_f3 {} {
  59     global csrcfile
  60     set line [gdb_get_line_number "f3 breakpoint" $csrcfile]
  61     gdb_test "break pieces.c:$line" "Breakpoint 4.*" \
  62        "set f3 breakpoint for pieces"
  63     gdb_continue_to_breakpoint "continue to f3 breakpoint for pieces"
  64     gdb_test "print a.i" " = 4" "print a.i in pieces:f3"
  65     gdb_test "print a.j" " = 14" "print a.j in pieces:f3"
  66     gdb_test "print a.i = 7" " = 7" "set a.i in pieces:f3"
  67     gdb_test "print a.i" " = 7" "print new a.i in pieces:f3"
  68 }
  69
  70 # Function f6 tests for an empty DW_OP_piece.
  71 proc pieces_test_f6 {} {
  72     global csrcfile
  73     set line [gdb_get_line_number "f6 breakpoint" $csrcfile]
  74     gdb_test "break pieces.c:$line" "Breakpoint 5.*" \
  75        "set f6 breakpoint for pieces"
  76     gdb_continue_to_breakpoint "continue to f6 breakpoint for pieces"
  77     gdb_test "print a" \
  78         " = {i = 7, j = 8, q = .optimized out.}" \
  79         "print a with optimized out piece"
  80     # Note: no warning for this case.
  81     gdb_test_multiple "print a.i" \
  82         "print a.i with optimized out piece" {
  83             -re "warning: some bits in computed object" {
  84                 fail "print a.i with optimized out piece"
  85             }
  86             -re " = 7" {
  87                 pass "print a.i with optimized out piece"
  88             }
  89         }
  90 }
  91
  92 pieces_test_f1
  93 pieces_test_f2
  94 pieces_test_f3
  95 pieces_test_f6