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1 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
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2
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3 # This program is free software; you can redistribute it and/or modify
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4 # it under the terms of the GNU General Public License as published by
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5 # the Free Software Foundation; either version 3 of the License, or
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6 # (at your option) any later version.
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7 #
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8 # This program is distributed in the hope that it will be useful,
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 # GNU General Public License for more details.
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12 #
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13 # You should have received a copy of the GNU General Public License
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14 # along with GCC; see the file COPYING3. If not see
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15 # <http://www.gnu.org/licenses/>.
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16
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17 global gdb_tests
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18 set gdb_tests {}
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19
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20 # Scan a file for markers and fill in the gdb_marker array for that
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21 # file. Any error in this script is simply thrown; errors here are
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22 # programming errors in the test suite itself and should not be
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23 # caught.
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24 proc scan_gdb_markers {filename} {
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25 global gdb_markers
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26
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27 if {[info exists gdb_markers($filename,-)]} {
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28 return
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29 }
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30
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31 set fd [open $filename]
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32 set lineno 1
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33 while {! [eof $fd]} {
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34 set line [gets $fd]
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35 if {[regexp -- "Mark (\[a-zA-Z0-9\]+)" $line ignore marker]} {
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36 set gdb_markers($filename,$marker) $lineno
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37 }
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38 incr lineno
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39 }
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40 close $fd
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41
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42 set gdb_markers($filename,-) {}
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43 }
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44
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45 # Find a marker in a source file, and return the marker's line number.
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46 proc get_line_number {filename marker} {
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47 global gdb_markers
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48
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49 scan_gdb_markers $filename
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50 return $gdb_markers($filename,$marker)
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51 }
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52
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53 # Make note of a gdb test. A test consists of a variable name and an
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54 # expected result.
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55 proc note-test {var result} {
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56 global gdb_tests
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57
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58 lappend gdb_tests $var $result 0
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59 }
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60
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61 # A test that uses a regular expression. This is like note-test, but
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62 # the result is a regular expression that is matched against the
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63 # output.
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64 proc regexp-test {var result} {
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65 global gdb_tests
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66
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67 lappend gdb_tests $var $result 1
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68 }
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69
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70 # A test of 'whatis'. This tests a type rather than a variable.
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71 proc whatis-test {var result} {
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72 global gdb_tests
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73
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74 lappend gdb_tests $var $result whatis
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75 }
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76
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77 # Utility for testing variable values using gdb, invoked via dg-final.
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78 # Tests all tests indicated by note-test and regexp-test.
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79 #
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80 # Argument 0 is the marker on which to put a breakpoint
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81 # Argument 2 handles expected failures and the like
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82 proc gdb-test { marker {selector {}} {load_xmethods 0} } {
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83 if { ![isnative] || [is_remote target] } { return }
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84
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85 if {[string length $selector] > 0} {
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86 switch [dg-process-target $selector] {
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87 "S" { }
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88 "N" { return }
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89 "F" { setup_xfail "*-*-*" }
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90 "P" { }
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91 }
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92 }
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93
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94 set do_whatis_tests [gdb_batch_check "python print(gdb.type_printers)" \
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95 "\\\[\\\]"]
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96 if {!$do_whatis_tests} {
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97 send_log "skipping 'whatis' tests - gdb too old"
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98 }
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99
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100 # This assumes that we are three frames down from dg-test, and that
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101 # it still stores the filename of the testcase in a local variable "name".
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102 # A cleaner solution would require a new DejaGnu release.
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103 upvar 2 name testcase
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104 upvar 2 prog prog
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105
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106 set line [get_line_number $prog $marker]
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107
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108 set gdb_name $::env(GUALITY_GDB_NAME)
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109 set testname "$testcase"
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110 set output_file "[file rootname [file tail $prog]].exe"
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111 set cmd_file "[file rootname [file tail $prog]].gdb"
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112
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113 global srcdir
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114 set printer_code [file join $srcdir .. python libstdcxx v6 printers.py]
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115 set xmethod_code [file join $srcdir .. python libstdcxx v6 xmethods.py]
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116
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117 global gdb_tests
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118
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119 set fd [open $cmd_file "w"]
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120 # We don't want the system copy of the pretty-printers loaded
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121 puts $fd "set auto-load no"
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122 # Now that we've disabled auto-load, it's safe to set the target file
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123 puts $fd "file ./$output_file"
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124 # Load & register *our* copy of the pretty-printers
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125 puts $fd "source $printer_code"
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126 puts $fd "python register_libstdcxx_printers(None)"
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127 if { $load_xmethods } {
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128 # Load a& register xmethods.
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129 puts $fd "source $xmethod_code"
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130 puts $fd "python register_libstdcxx_xmethods(None)"
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131 }
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132 # And start the program
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133 puts $fd "break $line"
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134 puts $fd "run"
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135 # So we can verify that we're using the right libs ...
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136 puts $fd "info share"
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137
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138 set count 0
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139 foreach {var result kind} $gdb_tests {
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140 incr count
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141 set gdb_var($count) $var
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142 set gdb_expected($count) $result
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143 if {$kind == "whatis"} {
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144 if {$do_whatis_tests} {
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145 set gdb_is_type($count) 1
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146 set gdb_command($count) "whatis $var"
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147 } else {
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148 unsupported "$testname"
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149 close $fd
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150 return
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151 }
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152 } else {
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153 set gdb_is_type($count) 0
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154 set gdb_is_regexp($count) $kind
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155 set gdb_command($count) "print $var"
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156 }
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157 puts $fd $gdb_command($count)
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158 }
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159 set gdb_tests {}
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160
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161 puts $fd "quit"
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162 close $fd
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163
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164 set res [remote_spawn target "$gdb_name -nx -nw -quiet -batch -x $cmd_file "]
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165 if { $res < 0 || $res == "" } {
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166 unsupported "$testname"
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167 return
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168 }
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169
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170 set test_counter 0
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171 remote_expect target [timeout_value] {
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172 -re {^(type|\$([0-9]+)) = ([^\n\r]*)[\n\r]+} {
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173 send_log "got: $expect_out(buffer)"
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174
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175 incr test_counter
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176 set first $expect_out(3,string)
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177
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178 if {$gdb_is_type($test_counter)} {
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179 if {$expect_out(1,string) != "type"} {
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180 error "gdb failure"
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181 }
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182 set match [expr {![string compare $first \
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183 $gdb_expected($test_counter)]}]
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184 } elseif {$gdb_is_regexp($test_counter)} {
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185 set match [regexp -- $gdb_expected($test_counter) $first]
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186 } else {
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187 set match [expr {![string compare $first \
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188 $gdb_expected($test_counter)]}]
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189 }
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190
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191 if {$match} {
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192 pass "$testname $gdb_command($test_counter)"
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193 } else {
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194 fail "$testname $gdb_command($test_counter)"
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195 verbose " got =>$first<="
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196 verbose "expected =>$gdb_expected($test_counter)<="
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197 }
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198
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199 if {$test_counter == $count} {
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200 remote_close target
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201 return
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202 } else {
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203 exp_continue
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204 }
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205 }
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206
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207 -re {Python scripting is not supported in this copy of GDB.[\n\r]+} {
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208 unsupported "$testname"
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209 remote_close target
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210 return
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211 }
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212
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213 -re {Error while executing Python code.[\n\r]} {
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214 fail "$testname"
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215 remote_close target
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216 return
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217 }
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218
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219 -re {^[^$][^\n\r]*[\n\r]+} {
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220 send_log "skipping: $expect_out(buffer)"
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221 exp_continue
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222 }
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223
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224 timeout {
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225 unsupported "$testname"
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226 remote_close target
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227 return
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228 }
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229 }
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230
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231 remote_close target
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232 unsupported "$testname"
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233 return
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234 }
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235
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236 # Invoke gdb with a command and pattern-match the output.
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237 proc gdb_batch_check {command pattern} {
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238 set gdb_name $::env(GUALITY_GDB_NAME)
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239 set cmd "$gdb_name -nw -nx -quiet -batch -ex \"$command\""
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240 send_log "Spawning: $cmd\n"
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241 if [catch { set res [remote_spawn target "$cmd"] } ] {
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242 return 0
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243 }
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244 if { $res < 0 || $res == "" } {
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245 return 0
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246 }
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247
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248 remote_expect target [timeout_value] {
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249 -re $pattern {
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250 return 1
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251 }
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252
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253 -re {^[^\n\r]*[\n\r]+} {
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254 verbose "skipping: $expect_out(buffer)"
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255 exp_continue
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256 }
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257
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258 timeout {
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259 remote_close target
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260 return 0
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261 }
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262 }
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263
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264 remote_close target
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265 return 0
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266 }
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267
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268 # Check for a new-enough version of gdb. The pretty-printer tests
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269 # require gdb 7.3, but we don't want to test versions, so instead we
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270 # check for the python "lookup_global_symbol" method, which is in 7.3
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271 # but not earlier versions.
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272 # Return 1 if the version is ok, 0 otherwise.
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273 proc gdb_version_check {} {
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274 return [gdb_batch_check "python print(gdb.lookup_global_symbol)" \
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275 "<built-in function lookup_global_symbol>"]
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276 }
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277
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278 # Check for a version of gdb which supports xmethod tests. It is done
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279 # in a manner similar to the check for a version of gdb which supports the
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280 # pretty-printer tests below.
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281 proc gdb_version_check_xmethods {} {
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282 return [gdb_batch_check \
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283 "python import gdb.xmethod; print(gdb.xmethod.XMethod)" \
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284 "<class 'gdb\\.xmethod\\.XMethod'>"]
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285 }
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286
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287 # Like dg-runtest but keep the .exe around. dg-test has an option for
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288 # this but there is no way to pass it through dg-runtest.
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289 proc gdb-dg-runtest {args} {
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290 global dg-interpreter-batch-mode
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291 set saved-dg-interpreter-batch-mode ${dg-interpreter-batch-mode}
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292 set dg-interpreter-batch-mode 1
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293
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294 eval dg-runtest $args
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295
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296 set dg-interpreter-batch-mode ${saved-dg-interpreter-batch-mode}
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297 }
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