gdb/testsuite/gdb.arch/i386-bp_permanent.exp

   1 # Copyright (C) 2008-2013 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
  17 # This file is part of the gdb testsuite.
  18
  19 # Test stepping over permanent breakpoints on i386.
  20
  21 if { ![is_x86_like_target] } then {
  22     verbose "Skipping skip over permanent breakpoint on i386 tests."
  23     return
  24 }
  25
  26 set testfile "i386-bp_permanent"
  27 set srcfile i386-prologue.c
  28 set binfile ${objdir}/${subdir}/${testfile}
  29
  30 # some targets have leading underscores on assembly symbols.
  31 set additional_flags [gdb_target_symbol_prefix_flags]
  32
  33 # Don't use "debug", so that we don't have line information for the assembly
  34 # fragments.
  35 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
  36     untested ${testfile}.exp
  37     return -1
  38 }
  39
  40
  41 gdb_exit
  42 gdb_start
  43 gdb_reinitialize_dir $srcdir/$subdir
  44 gdb_load ${binfile}
  45
  46 #
  47 # Run to `main' where we begin our tests.
  48 #
  49
  50 if ![runto_main] then {
  51   return -1
  52 }
  53
  54 set function standard
  55
  56 set retcode [gdb_test_multiple "disassemble $function" "Disassemble function '$function'" {
  57     -re ".*($hex) <\\+0>.*($hex) <\\+4>.*($hex) <\\+5>.*($hex) <\\+6>.*$gdb_prompt $" {
  58       set function_start $expect_out(1,string)
  59       set address $expect_out(2,string)
  60       set address1 $expect_out(3,string)
  61       set address2 $expect_out(4,string)
  62     }
  63 }]
  64
  65 if {$retcode != 0} {
  66   fail "Disassemble failed, skipping entire test."
  67   return -1
  68 }
  69
  70 gdb_breakpoint "*$function_start"
  71
  72 gdb_breakpoint "*$address"
  73
  74 gdb_test "continue" "Breakpoint .*, $function_start in $function.*" \
  75          "Stop at the '$function' start breakpoint (fetching esp)."
  76
  77 # We want to fetch esp at the start of '$function' function to make sure
  78 # skip_permanent_breakpoint implementation really skips only the perm.
  79 # breakpoint. If, for whatever reason, 'leave' instruction doesn't get
  80 # executed, esp will not have this value.
  81 set start_esp 0
  82 gdb_test_multiple "print \$esp" "Fetch esp value." {
  83     -re "\\\$1.*($hex).*$gdb_prompt $" {
  84       set start_esp $expect_out(1,string)
  85     }
  86 }
  87
  88 gdb_test "continue" "Breakpoint .*, $address in $function.*" \
  89          "Stop at permanent breakpoint."
  90
  91 gdb_test "stepi" "$address1|$address2 in $function.*" \
  92          "Single stepping past permanent breakpoint."
  93
  94 gdb_test "print \$esp" ".*$start_esp.*" \
  95          "ESP value does not match - step_permanent_breakpoint wrong."
  96