gdb/testsuite/gdb.python/py-inferior.exp

   1 # Copyright (C) 2009-2012 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 # This file is part of the GDB testsuite.  It tests the mechanism
  17 # exposing inferiors to Python.
  18
  19 load_lib gdb-python.exp
  20
  21 standard_testfile
  22
  23 if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
  24     return -1
  25 }
  26
  27 # Start with a fresh gdb.
  28 clean_restart ${testfile}
  29
  30 # Skip all tests if Python scripting is not enabled.
  31 if { [skip_python_tests] } { continue }
  32
  33 gdb_test_multiple "show endian" "getting target endian" {
  34     -re ".*little endian.*$gdb_prompt $" {
  35         set python_pack_char "<"
  36         # pass silently
  37     }
  38     -re ".*big endian.*$gdb_prompt $" {
  39         set python_pack_char ">"
  40         # pass silently
  41     }
  42 }
  43
  44 # The following tests require execution.
  45
  46 if ![runto_main] then {
  47     fail "Can't run to main"
  48     return 0
  49 }
  50
  51 runto [gdb_get_line_number "Break here."]
  52
  53 # Test basic gdb.Inferior attributes and methods.
  54
  55 gdb_py_test_silent_cmd "python inferiors = gdb.inferiors ()" "get inferiors list" 1
  56 gdb_test "python print inferiors" "\\(<gdb.Inferior object at 0x\[\[:xdigit:\]\]+>,\\)" "verify inferiors list"
  57 gdb_py_test_silent_cmd "python i0 = inferiors\[0\]" "get first inferior" 0
  58
  59 gdb_test "python print 'result =', i0 == inferiors\[0\]" " = True" "test equality comparison (true)"
  60 gdb_test "python print 'result =', i0.num" " = \[0-9\]+" "test Inferior.num"
  61 gdb_test "python print 'result =', i0.pid" " = \[0-9\]+" "test Inferior.pid"
  62 gdb_test "python print 'result =', i0.was_attached" " = False" "test Inferior.was_attached"
  63 gdb_test "python print i0.threads ()" "\\(<gdb.InferiorThread object at 0x\[\[:xdigit:\]\]+>,\\)" "test Inferior.threads"
  64
  65 # Test memory read and write operations.
  66
  67 gdb_py_test_silent_cmd "python addr = gdb.selected_frame ().read_var ('str')" \
  68   "read str address" 0
  69 gdb_py_test_silent_cmd "python str = gdb.inferiors()\[0\].read_memory (addr, 5)" \
  70   "read str contents" 1
  71 gdb_py_test_silent_cmd "python str\[1\] = 'a'" "change str" 0
  72 gdb_py_test_silent_cmd "python gdb.inferiors()\[0\].write_memory (addr, str)" \
  73   "write str" 1
  74 gdb_test "print str" " = \"hallo, testsuite\"" \
  75   "ensure str was changed in the inferior"
  76
  77 # Test memory search.
  78
  79 set hex_number {0x[0-9a-fA-F][0-9a-fA-F]*}
  80 set dec_number {[0-9]+}
  81 set history_prefix {[$][0-9]* = }
  82 set newline {[\r\n]+}
  83 set pattern_not_found "${newline}.None"
  84 set one_pattern_found "${newline}.${dec_number}"
  85
  86 # Test string pattern.
  87
  88 gdb_test "set *(int32_t*) &int8_search_buf\[10\] = 0x61616161" "" ""
  89 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int8_search_buf')" "" ""
  90 gdb_test_no_output "py start_addr = search_buf.address"
  91 gdb_test_no_output "py length = search_buf.type.sizeof"
  92
  93 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, 'aaa')" \
  94   "${one_pattern_found}" "find string pattern"
  95
  96 # Test not finding pattern because search range too small, with
  97 # potential find at the edge of the range.
  98
  99 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3, 'aaaa')" \
 100   "${pattern_not_found}" "pattern not found at end of range"
 101
 102 # Increase the search range by 1 and we should find the pattern.
 103
 104 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3+1, 'aaa')" \
 105   "${one_pattern_found}" "pattern found at end of range"
 106
 107 # Import struct to pack the following patterns.
 108 gdb_test_no_output "py from struct import *"
 109
 110 # Test 16-bit pattern.
 111
 112 gdb_test_no_output "set int16_search_buf\[10\] = 0x1234"
 113 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int16_search_buf')"
 114 gdb_test_no_output "py start_addr = search_buf.address"
 115 gdb_test_no_output "py length = search_buf.type.sizeof"
 116 gdb_test_no_output "py pattern = pack('${python_pack_char}H',0x1234)"
 117
 118 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 119   "${one_pattern_found}" "find 16-bit pattern, with value pattern"
 120
 121 # Test 32-bit pattern.
 122
 123 gdb_test_no_output "set int32_search_buf\[10\] = 0x12345678"
 124 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int32_search_buf')"
 125 gdb_test_no_output "py start_addr = search_buf.address"
 126 gdb_test_no_output "py length = search_buf.type.sizeof"
 127 gdb_test_no_output "py pattern = pack('${python_pack_char}I',0x12345678)"
 128
 129 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 130   "${one_pattern_found}" "find 32-bit pattern, with python pattern"
 131
 132 # Test 64-bit pattern.
 133
 134 gdb_test_no_output "set int64_search_buf\[10\] = 0xfedcba9876543210LL"
 135 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int64_search_buf')"
 136 gdb_test_no_output "py start_addr = search_buf.address"
 137 gdb_test_no_output "py length = search_buf.type.sizeof"
 138 gdb_test_no_output "py pattern = pack('${python_pack_char}Q', 0xfedcba9876543210)"
 139
 140 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 141   "${one_pattern_found}" "find 64-bit pattern, with value pattern"
 142
 143 # Test mixed-sized patterns.
 144
 145 gdb_test_no_output "set *(int8_t*) &search_buf\[10\] = 0x62"
 146 gdb_test_no_output "set *(int16_t*) &search_buf\[11\] = 0x6363"
 147 gdb_test_no_output "set *(int32_t*) &search_buf\[13\] = 0x64646464"
 148 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('search_buf')"
 149 gdb_test_no_output "py start_addr = search_buf\[0\].address"
 150 gdb_test_no_output "py pattern1 = pack('B', 0x62)"
 151 gdb_test_no_output "py pattern2 = pack('${python_pack_char}H', 0x6363)"
 152 gdb_test_no_output "py pattern3 = pack('${python_pack_char}I', 0x64646464)"
 153
 154 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern1)" \
 155     "${one_pattern_found}" "find mixed-sized pattern"
 156 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern2)" \
 157     "${one_pattern_found}" "find mixed-sized pattern"
 158 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern3)" \
 159     "${one_pattern_found}" "find mixed-sized pattern"
 160
 161 # Test search spanning a large range, in the particular case of native
 162 # targets, test the search spanning multiple chunks.
 163 # Remote targets may implement the search differently.
 164
 165 set CHUNK_SIZE 16000 ;
 166
 167 gdb_test_no_output "set *(int32_t*) &search_buf\[0*${CHUNK_SIZE}+100\] = 0x12345678"
 168 gdb_test_no_output "set *(int32_t*) &search_buf\[1*${CHUNK_SIZE}+100\] = 0x12345678"
 169 gdb_test_no_output "py start_addr = gdb.selected_frame ().read_var ('search_buf')"
 170 gdb_test_no_output "py end_addr = start_addr + gdb.selected_frame ().read_var ('search_buf_size')"
 171 gdb_test_no_output "py pattern = pack('${python_pack_char}I', 0x12345678)"
 172 gdb_test_no_output "py first = gdb.inferiors()\[0\].search_memory (start_addr,end_addr - start_addr, pattern)"
 173 gdb_test "py print first" "${one_pattern_found}" "search spanning large range 1st result"
 174 gdb_test_no_output "py start_addr = first + 1"
 175 gdb_test_no_output "py second = gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)"
 176 gdb_test "py print second" "${one_pattern_found}" "search spanning large range 2nd result"
 177 gdb_test_no_output "py start_addr = second + 1"
 178 gdb_test_no_output "py third = gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)"
 179 gdb_test "py print third" "${pattern_not_found}" "search spanning large range 3rd result"
 180
 181 # For native targets, test a pattern straddling a chunk boundary.
 182
 183 if [isnative] {
 184     gdb_test_no_output "set *(int32_t*) &search_buf\[${CHUNK_SIZE}-1\] = 0xfdb97531"
 185     gdb_test_no_output "py pattern = pack('${python_pack_char}I', 0xfdb97531)"
 186     gdb_test_no_output "py start_addr = gdb.selected_frame ().read_var ('search_buf')"
 187     gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)" \
 188       "${one_pattern_found}" "find pattern straddling chunk boundary"
 189 }
 190
 191 # Test Inferior is_valid.  This must always be the last test in
 192 # this testcase as it kills the inferior.
 193
 194 gdb_py_test_silent_cmd "python inf_list = gdb.inferiors()" "get initial list" 1
 195 gdb_test "python print len(inf_list)" "1" "Get inferior list length"
 196 gdb_test "python print inf_list\[0\].is_valid()" "True" \
 197          "Check inferior validity"
 198 gdb_test "add-inferior" "Added inferior 2.*" "add empty inferior 2"
 199 gdb_py_test_silent_cmd "python inf_list = gdb.inferiors()" "get new list" 1
 200 gdb_test "python print len(inf_list)" "2" "Get inferior list length"
 201 gdb_test "python print inf_list\[0\].is_valid()" "True" \
 202          "Check inferior validity"
 203 gdb_test "python print inf_list\[1\].is_valid()" "True" \
 204          "Check inferior validity"
 205 gdb_test_no_output "remove-inferiors 2" "remove-inferiors 3"
 206 gdb_test "python print inf_list\[0\].is_valid()" "False" \
 207          "Check inferior validity"
 208 gdb_test "python print inf_list\[1\].is_valid()" "True" \
 209          "Check inferior validity"
 210
 211 # Test gdb.selected_inferior()
 212 gdb_test "inferior 1" ".*" "Switch to first inferior"
 213 gdb_test "py print gdb.selected_inferior().num" "1" "First inferior selected"
 214
 215 gdb_test "add-inferior" "Added inferior 3" "Create new inferior"
 216 gdb_test "inferior 3" ".*" "Switch to third inferior"
 217 gdb_test "py print gdb.selected_inferior().num" "3" "Third inferior selected"
 218 gdb_test "inferior 1" ".*" "Switch to first inferior"
 219 gdb_test_no_output "remove-inferiors 3" "Remove second inferior"