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 { [gdb_compile_pthreads ${srcdir}/${subdir}/${srcfile} ${binfile} executable {debug}] != "" } {
  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 # Test basic gdb.Inferior attributes and methods.
  52
  53 gdb_py_test_silent_cmd "python inferiors = gdb.inferiors ()" "get inferiors list" 1
  54 gdb_test "python print inferiors" "\\(<gdb.Inferior object at 0x\[\[:xdigit:\]\]+>,\\)" "verify inferiors list"
  55 gdb_py_test_silent_cmd "python i0 = inferiors\[0\]" "get first inferior" 0
  56
  57 gdb_test "python print 'result =', i0 == inferiors\[0\]" " = True" "test equality comparison (true)"
  58 gdb_test "python print 'result =', i0.num" " = \[0-9\]+" "test Inferior.num"
  59 gdb_test "python print 'result =', i0.pid" " = \[0-9\]+" "test Inferior.pid"
  60 gdb_test "python print 'result =', i0.was_attached" " = False" "test Inferior.was_attached"
  61 gdb_test "python print i0.threads ()" "\\(<gdb.InferiorThread object at 0x\[\[:xdigit:\]\]+>,\\)" "test Inferior.threads"
  62
  63 # Test the number of inferior threads.
  64
  65 gdb_breakpoint check_threads
  66 gdb_continue_to_breakpoint "cont to check_threads" ".*pthread_barrier_wait.*"
  67 gdb_test "python print len (i0.threads ())" "\r\n9" "test Inferior.threads 2"
  68
  69 # Proceed to the next test.
  70
  71 gdb_breakpoint [gdb_get_line_number "Break here."]
  72 gdb_continue_to_breakpoint "cont to Break here." ".*Break here\..*"
  73
  74 # Test memory read and write operations.
  75
  76 gdb_py_test_silent_cmd "python addr = gdb.selected_frame ().read_var ('str')" \
  77   "read str address" 0
  78 gdb_py_test_silent_cmd "python str = gdb.inferiors()\[0\].read_memory (addr, 5)" \
  79   "read str contents" 1
  80 gdb_py_test_silent_cmd "python str\[1\] = 'a'" "change str" 0
  81 gdb_py_test_silent_cmd "python gdb.inferiors()\[0\].write_memory (addr, str)" \
  82   "write str" 1
  83 gdb_test "print str" " = \"hallo, testsuite\"" \
  84   "ensure str was changed in the inferior"
  85
  86 # Test memory search.
  87
  88 set hex_number {0x[0-9a-fA-F][0-9a-fA-F]*}
  89 set dec_number {[0-9]+}
  90 set history_prefix {[$][0-9]* = }
  91 set newline {[\r\n]+}
  92 set pattern_not_found "${newline}.None"
  93 set one_pattern_found "${newline}.${dec_number}"
  94
  95 # Test string pattern.
  96
  97 gdb_test "set *(int32_t*) &int8_search_buf\[10\] = 0x61616161" "" ""
  98 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int8_search_buf')" "" ""
  99 gdb_test_no_output "py start_addr = search_buf.address"
 100 gdb_test_no_output "py length = search_buf.type.sizeof"
 101
 102 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, 'aaa')" \
 103   "${one_pattern_found}" "find string pattern"
 104
 105 # Test not finding pattern because search range too small, with
 106 # potential find at the edge of the range.
 107
 108 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3, 'aaaa')" \
 109   "${pattern_not_found}" "pattern not found at end of range"
 110
 111 # Increase the search range by 1 and we should find the pattern.
 112
 113 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3+1, 'aaa')" \
 114   "${one_pattern_found}" "pattern found at end of range"
 115
 116 # Import struct to pack the following patterns.
 117 gdb_test_no_output "py from struct import *"
 118
 119 # Test 16-bit pattern.
 120
 121 gdb_test_no_output "set int16_search_buf\[10\] = 0x1234"
 122 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int16_search_buf')"
 123 gdb_test_no_output "py start_addr = search_buf.address"
 124 gdb_test_no_output "py length = search_buf.type.sizeof"
 125 gdb_test_no_output "py pattern = pack('${python_pack_char}H',0x1234)"
 126
 127 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 128   "${one_pattern_found}" "find 16-bit pattern, with value pattern"
 129
 130 # Test 32-bit pattern.
 131
 132 gdb_test_no_output "set int32_search_buf\[10\] = 0x12345678"
 133 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int32_search_buf')"
 134 gdb_test_no_output "py start_addr = search_buf.address"
 135 gdb_test_no_output "py length = search_buf.type.sizeof"
 136 gdb_test_no_output "py pattern = pack('${python_pack_char}I',0x12345678)"
 137
 138 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 139   "${one_pattern_found}" "find 32-bit pattern, with python pattern"
 140
 141 # Test 64-bit pattern.
 142
 143 gdb_test_no_output "set int64_search_buf\[10\] = 0xfedcba9876543210LL"
 144 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int64_search_buf')"
 145 gdb_test_no_output "py start_addr = search_buf.address"
 146 gdb_test_no_output "py length = search_buf.type.sizeof"
 147 gdb_test_no_output "py pattern = pack('${python_pack_char}Q', 0xfedcba9876543210)"
 148
 149 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 150   "${one_pattern_found}" "find 64-bit pattern, with value pattern"
 151
 152 # Test mixed-sized patterns.
 153
 154 gdb_test_no_output "set *(int8_t*) &search_buf\[10\] = 0x62"
 155 gdb_test_no_output "set *(int16_t*) &search_buf\[11\] = 0x6363"
 156 gdb_test_no_output "set *(int32_t*) &search_buf\[13\] = 0x64646464"
 157 gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('search_buf')"
 158 gdb_test_no_output "py start_addr = search_buf\[0\].address"
 159 gdb_test_no_output "py pattern1 = pack('B', 0x62)"
 160 gdb_test_no_output "py pattern2 = pack('${python_pack_char}H', 0x6363)"
 161 gdb_test_no_output "py pattern3 = pack('${python_pack_char}I', 0x64646464)"
 162
 163 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern1)" \
 164     "${one_pattern_found}" "find mixed-sized pattern"
 165 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern2)" \
 166     "${one_pattern_found}" "find mixed-sized pattern"
 167 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern3)" \
 168     "${one_pattern_found}" "find mixed-sized pattern"
 169
 170 # Test search spanning a large range, in the particular case of native
 171 # targets, test the search spanning multiple chunks.
 172 # Remote targets may implement the search differently.
 173
 174 set CHUNK_SIZE 16000 ;
 175
 176 gdb_test_no_output "set *(int32_t*) &search_buf\[0*${CHUNK_SIZE}+100\] = 0x12345678"
 177 gdb_test_no_output "set *(int32_t*) &search_buf\[1*${CHUNK_SIZE}+100\] = 0x12345678"
 178 gdb_test_no_output "py start_addr = gdb.selected_frame ().read_var ('search_buf')"
 179 gdb_test_no_output "py end_addr = start_addr + gdb.selected_frame ().read_var ('search_buf_size')"
 180 gdb_test_no_output "py pattern = pack('${python_pack_char}I', 0x12345678)"
 181 gdb_test_no_output "py first = gdb.inferiors()\[0\].search_memory (start_addr,end_addr - start_addr, pattern)"
 182 gdb_test "py print first" "${one_pattern_found}" "search spanning large range 1st result"
 183 gdb_test_no_output "py start_addr = first + 1"
 184 gdb_test_no_output "py second = gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)"
 185 gdb_test "py print second" "${one_pattern_found}" "search spanning large range 2nd result"
 186 gdb_test_no_output "py start_addr = second + 1"
 187 gdb_test_no_output "py third = gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)"
 188 gdb_test "py print third" "${pattern_not_found}" "search spanning large range 3rd result"
 189
 190 # For native targets, test a pattern straddling a chunk boundary.
 191
 192 if [isnative] {
 193     gdb_test_no_output "set *(int32_t*) &search_buf\[${CHUNK_SIZE}-1\] = 0xfdb97531"
 194     gdb_test_no_output "py pattern = pack('${python_pack_char}I', 0xfdb97531)"
 195     gdb_test_no_output "py start_addr = gdb.selected_frame ().read_var ('search_buf')"
 196     gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)" \
 197       "${one_pattern_found}" "find pattern straddling chunk boundary"
 198 }
 199
 200 # Test Inferior is_valid.  This must always be the last test in
 201 # this testcase as it kills the inferior.
 202
 203 gdb_py_test_silent_cmd "python inf_list = gdb.inferiors()" "get initial list" 1
 204 gdb_test "python print len(inf_list)" "1" "Get inferior list length"
 205 gdb_test "python print inf_list\[0\].is_valid()" "True" \
 206          "Check inferior validity"
 207 gdb_test "add-inferior" "Added inferior 2.*" "add empty inferior 2"
 208 gdb_py_test_silent_cmd "python inf_list = gdb.inferiors()" "get new list" 1
 209 gdb_test "python print len(inf_list)" "2" "Get inferior list length"
 210 gdb_test "python print inf_list\[0\].is_valid()" "True" \
 211          "Check inferior validity"
 212 gdb_test "python print inf_list\[1\].is_valid()" "True" \
 213          "Check inferior validity"
 214 gdb_test_no_output "remove-inferiors 2" "remove-inferiors 3"
 215 gdb_test "python print inf_list\[0\].is_valid()" "False" \
 216          "Check inferior validity"
 217 gdb_test "python print inf_list\[1\].is_valid()" "True" \
 218          "Check inferior validity"
 219
 220 # Test gdb.selected_inferior()
 221 gdb_test "inferior 1" ".*" "Switch to first inferior"
 222 gdb_test "py print gdb.selected_inferior().num" "1" "First inferior selected"
 223
 224 gdb_test "add-inferior" "Added inferior 3" "Create new inferior"
 225 gdb_test "inferior 3" ".*" "Switch to third inferior"
 226 gdb_test "py print gdb.selected_inferior().num" "3" "Third inferior selected"
 227 gdb_test "inferior 1" ".*" "Switch to first inferior"
 228 gdb_test_no_output "remove-inferiors 3" "Remove second inferior"