i386-bp_permanent.exp revision 1.9 
1# Copyright (C) 2008-2020 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
21if { ![istarget "i?86-*-*"] && ![istarget "x86_64-*-*"] } then {
22    verbose "Skipping skip over permanent breakpoint on i386 tests."
23    return
24}
25
26standard_testfile
27
28# some targets have leading underscores on assembly symbols.
29set additional_flags [gdb_target_symbol_prefix_flags]
30
31# Don't use "debug", so that we don't have line information for the assembly
32# fragments.
33if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
34    untested "failed to compile"
35    return -1
36}
37
38
39gdb_exit
40gdb_start
41gdb_reinitialize_dir $srcdir/$subdir
42gdb_load ${binfile}
43
44#
45# Run to `main' where we begin our tests.
46#
47
48if ![runto_main] then {
49  return -1
50}
51
52set function "standard"
53
54set retcode [gdb_test_multiple "disassemble $function" "disassemble function '$function'" {
55    -re "($hex) <\\+0>.*($hex) <\\+$decimal>.*int3.*($hex) <\\+$decimal>.*leave.*$gdb_prompt $" {
56      set address_bp $expect_out(2,string)
57      set address_after_bp $expect_out(3,string)
58    }
59}]
60
61if {$retcode != 0} {
62  fail "disassemble failed, skipping entire test."
63  return -1
64}
65
66gdb_breakpoint "*$address_bp"
67
68gdb_test "continue" "Breakpoint .*, $address_bp in $function.*" \
69	 "stop at permanent breakpoint"
70
71# We want to fetch the stack pointer at the start of '$function'
72# function to make sure the skip_permanent_breakpoint implementation
73# really skips only the permanent breakpoint.  If, for whatever
74# reason, the 'leave' instruction executes, the stack pointer will not
75# have this value.
76set start_sp 0
77gdb_test_multiple "print \$sp" "fetch stack pointer value" {
78    -re "\\\$1.*($hex).*$gdb_prompt $" {
79      set start_sp $expect_out(1,string)
80    }
81}
82
83gdb_test "stepi" "$address_after_bp in $function.*" \
84	 "single-step past permanent breakpoint"
85
86gdb_test "print \$sp" ".*$start_sp.*" \
87	 "stack pointer value matches"
88