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

   1 # Copyright (C) 2009, 2010 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 # Run a command in GDB, and report a failure if a Python exception is thrown.
  24 # If report_pass is true, report a pass if no exception is thrown.
  25 proc gdb_py_test_silent_cmd {cmd name report_pass} {
  26     global gdb_prompt
  27
  28   gdb_test_multiple $cmd $name {
  29       -re "Traceback.*$gdb_prompt $"  { fail $name }
  30       -re "$gdb_prompt $"             { if $report_pass { pass $name } }
  31   }
  32 }
  33
  34 set testfile "py-inferior"
  35 set srcfile ${testfile}.c
  36 if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
  37     return -1
  38 }
  39
  40 # Start with a fresh gdb.
  41 clean_restart ${testfile}
  42
  43 # Skip all tests if Python scripting is not enabled.
  44 if { [skip_python_tests] } { continue }
  45
  46 # The following tests require execution.
  47
  48 if ![runto_main] then {
  49     fail "Can't run to main"
  50     return 0
  51 }
  52
  53 runto [gdb_get_line_number "Break here."]
  54
  55 # Test basic gdb.Inferior attributes and methods.
  56
  57 gdb_py_test_silent_cmd "python inferiors = gdb.inferiors ()" "get inferiors list" 1
  58 gdb_test "python print inferiors" "\\(<gdb.Inferior object at 0x\[\[:xdigit:\]\]+>,\\)" "verify inferiors list"
  59 gdb_py_test_silent_cmd "python i0 = inferiors\[0\]" "get first inferior" 0
  60
  61 gdb_test "python print 'result =', i0 == inferiors\[0\]" " = True" "test equality comparison (true)"
  62 gdb_test "python print 'result =', i0.num" " = \[0-9\]+" "test Inferior.num"
  63 gdb_test "python print 'result =', i0.pid" " = \[0-9\]+" "test Inferior.pid"
  64 gdb_test "python print 'result =', i0.was_attached" " = False" "test Inferior.was_attached"
  65 gdb_test "python print i0.threads ()" "\\(<gdb.InferiorThread object at 0x\[\[:xdigit:\]\]+>,\\)" "test Inferior.threads"
  66
  67 # Test memory read and write operations.
  68
  69 gdb_py_test_silent_cmd "python addr = gdb.selected_frame ().read_var ('str')" \
  70   "read str address" 0
  71 gdb_py_test_silent_cmd "python str = gdb.inferiors()\[0\].read_memory (addr, 5)" \
  72   "read str contents" 1
  73 gdb_py_test_silent_cmd "python str\[1\] = 'a'" "change str" 0
  74 gdb_py_test_silent_cmd "python gdb.inferiors()\[0\].write_memory (addr, str)" \
  75   "write str" 1
  76 gdb_test "print str" " = 0x\[\[:xdigit:\]\]+ \"hallo, testsuite\"" \
  77   "ensure str was changed in the inferior"
  78
  79 # Test memory search.
  80
  81 set hex_number {0x[0-9a-fA-F][0-9a-fA-F]*}
  82 set dec_number {[0-9]+}
  83 set history_prefix {[$][0-9]* = }
  84 set newline {[\r\n]+}
  85 set pattern_not_found "${newline}.None"
  86 set one_pattern_found "${newline}.${dec_number}"
  87
  88 # Test string pattern.
  89
  90 gdb_test "set *(int32_t*) &int8_search_buf\[10\] = 0x61616161" "" ""
  91 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int8_search_buf')" "" ""
  92 gdb_test "py start_addr = search_buf.address" "" ""
  93 gdb_test "py length = search_buf.type.sizeof" "" ""
  94
  95 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, 'aaa')" \
  96   "${one_pattern_found}" "find string pattern"
  97
  98 # Test not finding pattern because search range too small, with
  99 # potential find at the edge of the range.
 100
 101 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3, 'aaaa')" \
 102   "${pattern_not_found}" "pattern not found at end of range"
 103
 104 # Increase the search range by 1 and we should find the pattern.
 105
 106 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 10+3+1, 'aaa')" \
 107   "${one_pattern_found}" "pattern found at end of range"
 108
 109 # Import struct to pack the following patterns.
 110 gdb_test "py from struct import *" "" ""
 111
 112 # Test 16-bit pattern.
 113
 114 gdb_test "set int16_search_buf\[10\] = 0x1234" "" ""
 115 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int16_search_buf')" "" ""
 116 gdb_test "py start_addr = search_buf.address" "" ""
 117 gdb_test "py length = search_buf.type.sizeof" "" ""
 118 gdb_test "py pattern = pack('H',0x1234)" "" \
 119
 120 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 121   "${one_pattern_found}" "find 16-bit pattern, with value pattern"
 122
 123 # Test 32-bit pattern.
 124
 125 gdb_test "set int32_search_buf\[10\] = 0x12345678" "" ""
 126 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int32_search_buf')" "" ""
 127 gdb_test "py start_addr = search_buf.address" "" ""
 128 gdb_test "py length = search_buf.type.sizeof" "" ""
 129 gdb_test "py pattern = pack('I',0x12345678)" "" \
 130
 131 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 132   "${one_pattern_found}" "find 32-bit pattern, with python pattern"
 133
 134 # Test 64-bit pattern.
 135
 136 gdb_test "set int64_search_buf\[10\] = 0xfedcba9876543210LL" "" ""
 137 gdb_test "py search_buf = gdb.selected_frame ().read_var ('int64_search_buf')" "" ""
 138 gdb_test "py start_addr = search_buf.address" "" ""
 139 gdb_test "py length = search_buf.type.sizeof" "" ""
 140 gdb_test "py pattern = pack('Q', 0xfedcba9876543210)" "" ""
 141
 142 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 143   "${one_pattern_found}" "find 64-bit pattern, with value pattern"
 144
 145 # Test mixed-sized patterns.
 146
 147 gdb_test "set *(int8_t*) &search_buf\[10\] = 0x62" "" ""
 148 gdb_test "set *(int16_t*) &search_buf\[11\] = 0x6363" "" ""
 149 gdb_test "set *(int32_t*) &search_buf\[13\] = 0x64646464" "" ""
 150 gdb_test "py search_buf = gdb.selected_frame ().read_var ('search_buf')" "" ""
 151 gdb_test "py start_addr = search_buf\[0\].address" "" ""
 152 gdb_test "py pattern1 = pack('B', 0x62)" "" ""
 153 gdb_test "py pattern2 = pack('H', 0x6363)" "" ""
 154 gdb_test "py pattern3 = pack('I', 0x64646464)" "" ""
 155
 156 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern1)" \
 157     "${one_pattern_found}" "find mixed-sized pattern"
 158 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern2)" \
 159     "${one_pattern_found}" "find mixed-sized pattern"
 160 gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, 100, pattern3)" \
 161     "${one_pattern_found}" "find mixed-sized pattern"
 162
 163 # Test search spanning a large range, in the particular case of native
 164 # targets, test the search spanning multiple chunks.
 165 # Remote targets may implement the search differently.
 166
 167 set CHUNK_SIZE 16000 ;
 168
 169 gdb_test "set *(int32_t*) &search_buf\[0*${CHUNK_SIZE}+100\] = 0x12345678" "" ""
 170 gdb_test "set *(int32_t*) &search_buf\[1*${CHUNK_SIZE}+100\] = 0x12345678" "" ""
 171 gdb_test "py start_addr = gdb.selected_frame ().read_var ('search_buf')" "" ""
 172 gdb_test "py length = gdb.selected_frame ().read_var ('search_buf_size')" "" ""
 173 gdb_test "py pattern = pack('I', 0x12345678)" "" ""
 174 gdb_test "py first = gdb.inferiors()\[0\].search_memory (start_addr,length, pattern)" "" ""
 175 gdb_test "py print first" "${one_pattern_found}" "search spanning large range 1st result"
 176 gdb_test "py start_addr = first + 1"
 177 gdb_test "py second = gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" "" ""
 178 gdb_test "py print second" "${one_pattern_found}" "search spanning large range 2nd result"
 179 gdb_test "py start_addr = second + 1"
 180 gdb_test "py third = gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" "" ""
 181 gdb_test "py print third" "${pattern_not_found}" "search spanning large range 3rd result"
 182
 183 # For native targets, test a pattern straddling a chunk boundary.
 184
 185 if [isnative] {
 186     gdb_test "set *(int32_t*) &search_buf\[${CHUNK_SIZE}-1\] = 0xfdb97531" "" ""
 187     gdb_test "py pattern = pack('I', 0xfdb97531)" "" ""
 188     gdb_test "py start_addr = gdb.selected_frame ().read_var ('search_buf')" "" ""
 189     gdb_test "py print gdb.inferiors()\[0\].search_memory (start_addr, length, pattern)" \
 190       "${one_pattern_found}" "find pattern straddling chunk boundary"
 191 }