gdb/testsuite/gdb.arch/ppc64-atomic-inst.exp

   1 # Copyright 2008, 2009, 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  16 #
  17 # This file is part of the gdb testsuite.
  18
  19 if $tracelevel {
  20     strace $tracelevel
  21 }
  22
  23 # Test single stepping through atomic sequences beginning with
  24 # a lwarx/ldarx instruction and ending with a stwcx/stdcx
  25 # instruction.
  26
  27
  28 if ![istarget "powerpc64-*"] then {
  29     verbose "Skipping testing of powerpc64 single stepping over atomic sequences."
  30     return
  31 }
  32
  33 set testfile "ppc64-atomic-inst"
  34 set srcfile ${testfile}.c
  35 set binfile ${objdir}/${subdir}/${testfile}
  36 set compile_flags "debug quiet"
  37
  38 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [concat $compile_flags additional_flags=-m64]] != "" } {
  39     unsupported "Testcase compile failed."
  40     return -1
  41 }
  42
  43 gdb_exit
  44 gdb_start
  45 gdb_reinitialize_dir $srcdir/$subdir
  46 gdb_load ${binfile}
  47
  48 if ![runto_main] then {
  49     perror "Couldn't run to breakpoint"
  50     continue
  51 }
  52
  53 set bp1 [gdb_get_line_number "lwarx"]
  54 gdb_breakpoint "$bp1" "Breakpoint $decimal at $hex" \
  55   "Set the breakpoint at the start of the sequence"
  56
  57 gdb_test continue "Continuing.*Breakpoint $decimal.*" \
  58   "Continue until breakpoint"
  59
  60 gdb_test next ".*__asm __volatile.*" \
  61   "Step through the lwarx/stwcx sequence"
  62
  63 gdb_test next ".*return 0.*" \
  64   "Step through the ldarx/stdcx sequence"