gdb/testsuite/gdb.base/break-entry.exp

   1 # Copyright (C) 2010-2022 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 inferior can stop at its very first instruction, usually "_start".
  17 # Dynamic executables have first instruction in ld.so.
  18
  19 # If we're using a stub, we'll already be debugging a live program and
  20 # stopped at the entry point when we connect, and so the runto below
  21 # will issue a "continue", which always skips any breakpoint at PC.
  22 # When testing with a native target (or some other target that supports
  23 # "run"), runto will do a "run", which first creates the process,
  24 # leaving the PC at the entry point, just like the stub case, but then
  25 # continues the process with the equivalent of "jump *$PC", which
  26 # triggers any breakpoint at $PC.  The latter is what we want to test.
  27
  28 standard_testfile start.c
  29
  30 if [use_gdb_stub] {
  31     untested "skipping tests due to use_gdb_stub"
  32     return
  33 }
  34
  35 if { [prepare_for_testing "failed to prepare" ${testfile} $srcfile {additional_flags=-static}] } {
  36     return -1
  37 }
  38
  39 set test "info files"
  40 set entry ""
  41 gdb_test_multiple $test $test {
  42     -re "\r\n\[\t \]*Entry point:\[\t \]*(0x\[0-9a-f\]+)\r\n.*$gdb_prompt $" {
  43         set entry $expect_out(1,string)
  44         pass $test
  45     }
  46 }
  47 if {$entry == ""} {
  48     untested "no entrypoint"
  49     return
  50 }
  51
  52 if {[istarget powerpc64-*] && [is_lp64_target]} {
  53     set test "convert entry point"
  54     gdb_test_multiple "p *(void(*)(void) *) $entry" $test {
  55         -re " =( \\(\[^0-9\]*\\))? (0x\[0-9a-f\]+)( <.*)?\r\n$gdb_prompt $" {
  56             set entry $expect_out(2,string)
  57             pass $test
  58         }
  59     }
  60 }
  61
  62 if ![runto "*$entry"] {
  63     return
  64 }
  65 gdb_test {p/x $pc} " = $entry"
  66
  67 gdb_breakpoint "main"
  68 gdb_continue_to_breakpoint "main" "\\.?main.*"