1# Copyright 2010-2017 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/>. 15load_lib dwarf.exp 16 17# Test DW_OP_GNU_implicit_pointer. 18 19# This test can only be run on targets which support DWARF-2 and use gas. 20if {![dwarf2_support]} { 21 return 0 22} 23 24standard_testfile .S 25set csrcfile ${testfile}.c 26set opts {} 27 28if [info exists COMPILE] { 29 # make check RUNTESTFLAGS='gdb.dwarf2/implptr.exp COMPILE=1 CC_FOR_TARGET=gcc\ -m32' 30 set srcfile ${csrcfile} 31 lappend opts debug optimize=-O2 32} elseif {![is_x86_like_target]} { 33 # This test can only be run on x86 targets. 34 return 0 35} 36 37if {[prepare_for_testing "failed to prepare" ${testfile} $srcfile $opts]} { 38 return -1 39} 40 41# Additional test to verify the referenced CU is not aged out. 42gdb_test_no_output "maintenance set dwarf max-cache-age 0" 43 44if ![runto_main] { 45 return -1 46} 47 48# Test various pointer depths in bar. 49proc implptr_test_bar {} { 50 global csrcfile 51 set line [gdb_get_line_number "bar breakpoint" $csrcfile] 52 gdb_test "break implptr.c:$line" "Breakpoint 2.*" \ 53 "set bar breakpoint for implptr" 54 gdb_continue_to_breakpoint "continue to bar breakpoint for implptr" 55 gdb_test "print j" " = \\(intp\\) <synthetic pointer>" "print j in implptr:bar" 56 gdb_test {print sizeof (j[0])} " = 4" {print sizeof (j[0]) in implptr:bar} 57 gdb_test "print *j" " = 5" "print *j in implptr:bar" 58 gdb_test "print **k" " = 5" "print **k in implptr:bar" 59 gdb_test "print ***l" " = 5" "print ***l in implptr:bar" 60} 61 62# Test implicit pointer offset. 63proc implptr_test_baz {} { 64 global csrcfile 65 set line [gdb_get_line_number "baz breakpoint" $csrcfile] 66 gdb_test "break implptr.c:$line" "Breakpoint 3.*" \ 67 "set baz breakpoint for implptr" 68 gdb_continue_to_breakpoint "continue to baz breakpoint for implptr" 69 gdb_test {p p[0].y} " = 92" "sanity check element 0" 70 gdb_test {p p[1].y} " = 46" "sanity check element 1" 71 gdb_test "step" "\r\nadd \\(.*" "enter the inlined function" 72 gdb_test "p a->y" " = 92" "check element 0 for the offset" 73 gdb_test "p b->y" " = 46" "check element 1 for the offset" 74 gdb_continue_to_breakpoint "ignore the second baz breakpoint" 75} 76 77# Test some values in foo. 78proc implptr_test_foo {} { 79 global csrcfile 80 set line [gdb_get_line_number "foo breakpoint" $csrcfile] 81 gdb_test "break implptr.c:$line" "Breakpoint 4.*" \ 82 "set foo breakpoint for implptr" 83 gdb_continue_to_breakpoint "continue to foo breakpoint for implptr" 84 gdb_test "print p\[0].x" " = \\(int \\*\\) <synthetic pointer>" \ 85 "print p\[0].x in implptr:foo" 86 gdb_test "print *p\[0].x" " = 69" \ 87 "print *p\[0].x in implptr:foo" 88 gdb_test "print/d *(((char *) p\[0].x) + 1)" " = 0" \ 89 "print byte inside *p\[0].x in implptr:foo" 90 gdb_test "print *(p\[0].x + 10)" \ 91 "access outside bounds of object referenced via synthetic pointer" \ 92 "print invalid offset from *p\[0].x in implptr:foo" 93 gdb_test "print j" " = 69" \ 94 "print j in implptr:foo" 95} 96 97implptr_test_bar 98implptr_test_baz 99implptr_test_foo 100