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

   1 # Copyright (C) 2009, 2010, 2011 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 if $tracelevel then {
  20     strace $tracelevel
  21 }
  22
  23 load_lib gdb-python.exp
  24
  25 set testfile "py-inferior"
  26 set srcfile ${testfile}.c
  27 if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
  28     return -1
  29 }
  30
  31 # Start with a fresh gdb.
  32 clean_restart ${testfile}
  33
  34 # Skip all tests if Python scripting is not enabled.
  35 if { [skip_python_tests] } { continue }
  36
  37 gdb_test_multiple "show endian" "getting target endian" {
  38     -re ".*little endian.*$gdb_prompt $" {
  39         set python_pack_char "<"
  40         # pass silently
  41     }
  42     -re ".*big endian.*$gdb_prompt $" {
  43         set python_pack_char ">"
  44         # pass silently
  45     }
  46 }
  47
  48 # The following tests require execution.
  49
  50 if ![runto_main] then {
  51     fail "Can't run to main"
  52     return 0
  53 }
  54
  55 runto [gdb_get_line_number "Break here."]
  56
  57 # Test basic gdb.Inferior attributes and methods.
  58
  59 gdb_py_test_silent_cmd "python inferiors = gdb.inferiors ()" "get inferiors list" 1
  60 gdb_test "python print inferiors" "\\(<gdb.Inferior object at 0x\[\[:xdigit:\]\]+>,\\)" "verify inferiors list"
  61 gdb_py_test_silent_cmd "python i0 = inferiors\[0\]" "get first inferior" 0
  62
  63 gdb_test "python print 'result =', i0 == inferiors\[0\]" " = True" "test equality comparison (true)"
  64 gdb_test "python print 'result =', i0.num" " = \[0-9\]+" "test Inferior.num"
  65 gdb_test "python print 'result =', i0.pid" " = \[0-9\]+" "test Inferior.pid"
  66 gdb_test "python print 'result =', i0.was_attached" " = False" "test Inferior.was_attached"
  67 gdb_test "python print i0.threads ()" "\\(<gdb.InferiorThread object at 0x\[\[:xdigit:\]\]+>,\\)" "test Inferior.threads"
  68
  69 # Test memory read and write operations.
  70
  71 gdb_py_test_silent_cmd "python addr = gdb.selected_frame ().read_var ('str')" \
  72   "read str address" 0
  73 gdb_py_test_silent_cmd "python str = gdb.inferiors()\[0\].read_memory (addr, 5)" \
  74   "read str contents" 1
  75 gdb_py_test_silent_cmd "python str\[1\] = 'a'" "change str" 0
  76 gdb_py_test_silent_cmd "python gdb.inferiors()\[0\].write_memory (addr, str)" \
  77   "write str" 1
  78 gdb_test "print str" " = 0x\[\[:xdigit:\]\]+ \"hallo, testsuite\"" \
  79   "ensure str was changed in the inferior"
  80
  81 # Test memory search.
  82
  83 set hex_number {0x[0-9a-fA-F][0-9a-fA-F]*}
  84 set dec_number {[0-9]+}
  85 set history_prefix {[$][0-9]* = }
  86 set newline {[\r\n]+}
  87 set pattern_not_found "${newline}.None"
  88 set one_pattern_found "${newline}.${dec_number}"
  89
  90 # Test string pattern.
  91
  92 gdb_test "set *(int32_t*) &int8_search_buf\[10\] = 0x61616161" "" ""
  93 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int8_search_buf')" "" ""
  94 gdb_test "py start_addr = search_buf.address" "" ""
  95 gdb_test "py length = search_buf.type.sizeof" "" ""
  96
  97 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, 'aaa')" \
  98   "${one_pattern_found}" "find string pattern"
  99
 100 # Test not finding pattern because search range too small, with
 101 # potential find at the edge of the range.
 102
 103 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3, 'aaaa')" \
 104   "${pattern_not_found}" "pattern not found at end of range"
 105
 106 # Increase the search range by 1 and we should find the pattern.
 107
 108 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3+1, 'aaa')" \
 109   "${one_pattern_found}" "pattern found at end of range"
 110
 111 # Import struct to pack the following patterns.
 112 gdb_test "py from struct import *" "" ""
 113
 114 # Test 16-bit pattern.
 115
 116 gdb_test "set int16_search_buf\[10\] = 0x1234" "" ""
 117 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int16_search_buf')" "" ""
 118 gdb_test "py start_addr = search_buf.address" "" ""
 119 gdb_test "py length = search_buf.type.sizeof" "" ""
 120 gdb_test "py pattern = pack('${python_pack_char}H',0x1234)" "" \
 121
 122 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 123   "${one_pattern_found}" "find 16-bit pattern, with value pattern"
 124
 125 # Test 32-bit pattern.
 126
 127 gdb_test "set int32_search_buf\[10\] = 0x12345678" "" ""
 128 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int32_search_buf')" "" ""
 129 gdb_test "py start_addr = search_buf.address" "" ""
 130 gdb_test "py length = search_buf.type.sizeof" "" ""
 131 gdb_test "py pattern = pack('${python_pack_char}I',0x12345678)" "" \
 132
 133 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 134   "${one_pattern_found}" "find 32-bit pattern, with python pattern"
 135
 136 # Test 64-bit pattern.
 137
 138 gdb_test "set int64_search_buf\[10\] = 0xfedcba9876543210LL" "" ""
 139 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int64_search_buf')" "" ""
 140 gdb_test "py start_addr = search_buf.address" "" ""
 141 gdb_test "py length = search_buf.type.sizeof" "" ""
 142 gdb_test "py pattern = pack('${python_pack_char}Q', 0xfedcba9876543210)" "" ""
 143
 144 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 145   "${one_pattern_found}" "find 64-bit pattern, with value pattern"
 146
 147 # Test mixed-sized patterns.
 148
 149 gdb_test "set *(int8_t*) &search_buf\[10\] = 0x62" "" ""
 150 gdb_test "set *(int16_t*) &search_buf\[11\] = 0x6363" "" ""
 151 gdb_test "set *(int32_t*) &search_buf\[13\] = 0x64646464" "" ""
 152 gdb_test "py search_buf = gdb.selected_frame ().read_var ('search_buf')" "" ""
 153 gdb_test "py start_addr = search_buf\[0\].address" "" ""
 154 gdb_test "py pattern1 = pack('B', 0x62)" "" ""
 155 gdb_test "py pattern2 = pack('${python_pack_char}H', 0x6363)" "" ""
 156 gdb_test "py pattern3 = pack('${python_pack_char}I', 0x64646464)" "" ""
 157
 158 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern1)" \
 159     "${one_pattern_found}" "find mixed-sized pattern"
 160 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern2)" \
 161     "${one_pattern_found}" "find mixed-sized pattern"
 162 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern3)" \
 163     "${one_pattern_found}" "find mixed-sized pattern"
 164
 165 # Test search spanning a large range, in the particular case of native
 166 # targets, test the search spanning multiple chunks.
 167 # Remote targets may implement the search differently.
 168
 169 set CHUNK_SIZE 16000 ;
 170
 171 gdb_test "set *(int32_t*) &search_buf\[0*${CHUNK_SIZE}+100\] = 0x12345678" "" ""
 172 gdb_test "set *(int32_t*) &search_buf\[1*${CHUNK_SIZE}+100\] = 0x12345678" "" ""
 173 gdb_test "py start_addr = gdb.selected_frame ().read_var ('search_buf')" "" ""
 174 gdb_test "py length = gdb.selected_frame ().read_var ('search_buf_size')" "" ""
 175 gdb_test "py pattern = pack('${python_pack_char}I', 0x12345678)" "" ""
 176 gdb_test "py first = gdb.inferiors()\[0\].search_memory (start_addr,length, pattern)" "" ""
 177 gdb_test "py print first" "${one_pattern_found}" "search spanning large range 1st result"
 178 gdb_test "py start_addr = first + 1"
 179 gdb_test "py second = gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" "" ""
 180 gdb_test "py print second" "${one_pattern_found}" "search spanning large range 2nd result"
 181 gdb_test "py start_addr = second + 1"
 182 gdb_test "py third = gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" "" ""
 183 gdb_test "py print third" "${pattern_not_found}" "search spanning large range 3rd result"
 184
 185 # For native targets, test a pattern straddling a chunk boundary.
 186
 187 if [isnative] {
 188     gdb_test "set *(int32_t*) &search_buf\[${CHUNK_SIZE}-1\] = 0xfdb97531" "" ""
 189     gdb_test "py pattern = pack('${python_pack_char}I', 0xfdb97531)" "" ""
 190     gdb_test "py start_addr = gdb.selected_frame ().read_var ('search_buf')" "" ""
 191     gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 192       "${one_pattern_found}" "find pattern straddling chunk boundary"
 193 }