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

   1 # Copyright (C) 2009-2016 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 = %s' % (i0 == inferiors\[0\]))" " = True" "test equality comparison (true)"
  58 gdb_test "python print ('result = %s' % i0.num)" " = \[0-9\]+" "test Inferior.num"
  59 gdb_test "python print ('result = %s' % i0.pid)" " = \[0-9\]+" "test Inferior.pid"
  60 gdb_test "python print ('result = %s' % 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); print(str)" \
  79   "read str contents" 1
  80 if { $gdb_py_is_py3k == 0 } {
  81   gdb_py_test_silent_cmd "python a = 'a'" "" 0
  82 } else {
  83   gdb_py_test_silent_cmd "python a = bytes('a', 'ascii')" "" 0
  84 }
  85 gdb_py_test_silent_cmd "python str\[1\] = a" "change str" 0
  86 gdb_py_test_silent_cmd "python gdb.inferiors()\[0\].write_memory (addr, str)" \
  87   "write str" 1
  88 gdb_test "print (str)" " = \"hallo, testsuite\"" \
  89   "ensure str was changed in the inferior"
  90
  91 # Test memory search.
  92
  93 set hex_number {0x[0-9a-fA-F][0-9a-fA-F]*}
  94 set dec_number {[0-9]+}
  95 set history_prefix {[$][0-9]* = }
  96 set newline {[\r\n]+}
  97 set pattern_not_found "${newline}.None"
  98 set one_pattern_found "${newline}.${dec_number}"
  99
 100 # Test string pattern.
 101
 102 with_test_prefix "string" {
 103     gdb_test "set *(int32_t*) &int8_search_buf\[10\] = 0x61616161"
 104     gdb_test "py search_buf = gdb.selected_frame ().read_var ('int8_search_buf')"
 105     gdb_test_no_output "py start_addr = search_buf.address"
 106     gdb_test_no_output "py length = search_buf.type.sizeof"
 107
 108     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, length, 'aaa'))" \
 109         "${one_pattern_found}" "find string pattern"
 110
 111     # Test not finding pattern because search range too small, with
 112     # potential find at the edge of the range.
 113     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, 10+3, 'aaaa'))" \
 114         "${pattern_not_found}" "pattern not found at end of range"
 115
 116     # Increase the search range by 1 and we should find the pattern.
 117     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, 10+3+1, 'aaa'))" \
 118         "${one_pattern_found}" "pattern found at end of range"
 119 }
 120
 121 # Import struct to pack the following patterns.
 122 gdb_test_no_output "py from struct import *"
 123
 124 # Test 16-bit pattern.
 125
 126 with_test_prefix "16-bit" {
 127     gdb_test_no_output "set int16_search_buf\[10\] = 0x1234"
 128     gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int16_search_buf')"
 129     gdb_test_no_output "py start_addr = search_buf.address"
 130     gdb_test_no_output "py length = search_buf.type.sizeof"
 131     gdb_test_no_output "py pattern = pack('${python_pack_char}H',0x1234)"
 132     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, length, pattern))" \
 133         "${one_pattern_found}" "find 16-bit pattern, with value pattern"
 134 }
 135
 136 # Test 32-bit pattern.
 137
 138 with_test_prefix "32-bit" {
 139     gdb_test_no_output "set int32_search_buf\[10\] = 0x12345678"
 140     gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int32_search_buf')"
 141     gdb_test_no_output "py start_addr = search_buf.address"
 142     gdb_test_no_output "py length = search_buf.type.sizeof"
 143     gdb_test_no_output "py pattern = pack('${python_pack_char}I',0x12345678)"
 144     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, length, pattern))" \
 145         "${one_pattern_found}" "find 32-bit pattern, with python pattern"
 146 }
 147
 148 # Test 64-bit pattern.
 149
 150 with_test_prefix "64-bit" {
 151     gdb_test_no_output "set int64_search_buf\[10\] = 0xfedcba9876543210LL"
 152     gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('int64_search_buf')"
 153     gdb_test_no_output "py start_addr = search_buf.address"
 154     gdb_test_no_output "py length = search_buf.type.sizeof"
 155     gdb_test_no_output "py pattern = pack('${python_pack_char}Q', 0xfedcba9876543210)"
 156     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, length, pattern))" \
 157         "${one_pattern_found}" "find 64-bit pattern, with value pattern"
 158 }
 159
 160 # Test mixed-sized patterns.
 161
 162 with_test_prefix "mixed-sized" {
 163     gdb_test_no_output "set *(int8_t*) &search_buf\[10\] = 0x62"
 164     gdb_test_no_output "set *(int16_t*) &search_buf\[11\] = 0x6363"
 165     gdb_test_no_output "set *(int32_t*) &search_buf\[13\] = 0x64646464"
 166     gdb_test_no_output "py search_buf = gdb.selected_frame ().read_var ('search_buf')"
 167     gdb_test_no_output "py start_addr = search_buf\[0\].address"
 168     gdb_test_no_output "py pattern1 = pack('B', 0x62)"
 169     gdb_test_no_output "py pattern2 = pack('${python_pack_char}H', 0x6363)"
 170     gdb_test_no_output "py pattern3 = pack('${python_pack_char}I', 0x64646464)"
 171
 172     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern1))" \
 173         "${one_pattern_found}" "find mixed-sized pattern 1"
 174     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern2))" \
 175         "${one_pattern_found}" "find mixed-sized pattern 2"
 176     gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern3))" \
 177         "${one_pattern_found}" "find mixed-sized pattern 3"
 178 }
 179
 180 # Test search spanning a large range, in the particular case of native
 181 # targets, test the search spanning multiple chunks.
 182 # Remote targets may implement the search differently.
 183
 184 set CHUNK_SIZE 16000
 185 with_test_prefix "large range" {
 186     gdb_test_no_output "set *(int32_t*) &search_buf\[0*${CHUNK_SIZE}+100\] = 0x12345678"
 187     gdb_test_no_output "set *(int32_t*) &search_buf\[1*${CHUNK_SIZE}+100\] = 0x12345678"
 188     gdb_test_no_output "py start_addr = gdb.selected_frame ().read_var ('search_buf')"
 189     gdb_test_no_output "py end_addr = start_addr + gdb.selected_frame ().read_var ('search_buf_size')"
 190     gdb_test_no_output "py pattern = pack('${python_pack_char}I', 0x12345678)"
 191
 192     gdb_test_no_output "py first = gdb.inferiors()\[0\].search_memory (start_addr,end_addr - start_addr, pattern)"
 193     gdb_test "py print (first)" "${one_pattern_found}" "search spanning large range 1st result"
 194     gdb_test_no_output "py start_addr = first + 1"
 195     gdb_test_no_output "py second = gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)"
 196     gdb_test "py print (second)" "${one_pattern_found}" "search spanning large range 2nd result"
 197     gdb_test_no_output "py start_addr = second + 1"
 198     gdb_test_no_output "py third = gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern)"
 199     gdb_test "py print (third)" "${pattern_not_found}" "search spanning large range 3rd result"
 200 }
 201
 202 # For native targets, test a pattern straddling a chunk boundary.
 203
 204 if [isnative] {
 205     with_test_prefix "straddling" {
 206         gdb_test_no_output "set *(int32_t*) &search_buf\[${CHUNK_SIZE}-1\] = 0xfdb97531"
 207         gdb_test_no_output "py pattern = pack('${python_pack_char}I', 0xfdb97531)"
 208         gdb_test_no_output "py start_addr = gdb.selected_frame ().read_var ('search_buf')"
 209         gdb_test "py print (gdb.inferiors()\[0\].search_memory (start_addr, end_addr - start_addr, pattern))" \
 210             "${one_pattern_found}" "find pattern straddling chunk boundary"
 211     }
 212 }
 213
 214 # Test Inferior is_valid.  This must always be the last test in
 215 # this testcase as it kills the inferior.
 216
 217 with_test_prefix "is_valid" {
 218     gdb_py_test_silent_cmd "python inf_list = gdb.inferiors()" "get initial list" 1
 219     gdb_test "python print (len(inf_list))" "1" "get inferior list length 1"
 220     gdb_test "python print (inf_list\[0\].is_valid())" "True" \
 221         "check inferior validity 1"
 222
 223     gdb_test "add-inferior" "Added inferior 2.*" "add empty inferior 2"
 224     gdb_py_test_silent_cmd "python inf_list = gdb.inferiors()" "get new list" 1
 225     gdb_test "python print (len(inf_list))" "2" "get inferior list length 2"
 226     gdb_test "python print (inf_list\[0\].is_valid())" "True" \
 227         "check inferior validity 2"
 228
 229     gdb_test "python print (inf_list\[1\].is_valid())" "True" \
 230         "check inferior validity 3"
 231
 232     gdb_test_no_output "remove-inferiors 2" "remove-inferiors 3"
 233     gdb_test "python print (inf_list\[0\].is_valid())" "True" \
 234         "check inferior validity 4"
 235
 236     gdb_test "python print (inf_list\[1\].is_valid())" "False" \
 237         "check inferior validity 5"
 238 }
 239
 240 # Test gdb.selected_inferior()
 241 with_test_prefix "selected_inferior" {
 242     gdb_test "inferior 1" ".*" "switch to first inferior"
 243     gdb_test "py print (gdb.selected_inferior().num)" "1" "first inferior selected"
 244
 245     gdb_test "add-inferior" "Added inferior 3" "create new inferior"
 246     gdb_test "inferior 3" ".*" "switch to third inferior"
 247     gdb_test "py print (gdb.selected_inferior().num)" "3" "third inferior selected"
 248     gdb_test "inferior 1" ".*" "switch back to first inferior"
 249     gdb_test_no_output "remove-inferiors 3" "remove second inferior"
 250 }