168 lines
5.2 KiB
Text
168 lines
5.2 KiB
Text
# Copyright 2002-2003, 2005, 2007-2012 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>. */
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# code_elim.exp -- tests that GDB can handle executables where some data/code
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# has been eliminated by the linker.
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set testfile1 code_elim1
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set testfile2 code_elim2
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set srcfile1 ${testfile1}.c
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set srcfile2 ${testfile2}.c
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set binfile1 ${objdir}/${subdir}/${testfile1}
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set binfile2 ${objdir}/${subdir}/${testfile2}
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set opts [list debug]
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lappend opts "additional_flags=-ffunction-sections"
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lappend opts "additional_flags=-fdata-sections"
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lappend opts "additional_flags=-Wl,-gc-sections"
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lappend opts "additional_flags=-Wl,-e,main"
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remote_exec build "rm -f ${binfile1}"
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remote_exec build "rm -f ${binfile2}"
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile1}" "${binfile1}" executable $opts] != "" } {
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untested code_elim.exp
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return -1
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}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable $opts] != "" } {
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untested code_elim.exp
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return -1
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}
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proc get_var_address { var } {
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global gdb_prompt hex
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# Match output like:
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# $1 = (int *) 0x0
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# $5 = (int (*)()) 0
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# $6 = (int (*)()) 0x24 <function_bar>
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gdb_test_multiple "print &${var}" "get address of ${var}" {
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-re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $" {
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pass "get address of ${var}"
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if { $expect_out(1,string) == "0" } {
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return "0x0"
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} else {
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return $expect_out(1,string)
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}
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}
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}
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return ""
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}
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proc not_null_var_address { var } {
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# Same as get_var_address, expect that it reports a failure if a null
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# address is returned by gdb.
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set address [get_var_address $var]
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regexp "0x\[0-9a-fA-F\]+" $address address
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if { "$address" == "0x0" } {
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fail "$var has null address"
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}
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}
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proc test_eliminated_var { var } {
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global gdb_prompt hex
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# Match output 'No symbol "${var}" in current context'
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gdb_test_multiple "print &${var}" "test eliminated var ${var}" {
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-re "No symbol \"${var}\" in current context\\.\[\r\n\]+${gdb_prompt} $" {
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pass "test eliminated var ${var}"
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}
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-re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $" {
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fail "test eliminated var ${var}"
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}
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}
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}
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# Check that the code and data eliminated in binfile1 are not included
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# into partial symtab... and that non-eliminated symbols are still there.
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gdb_exit
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gdb_start
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gdb_test "add-symbol-file ${binfile1} 0x100000" \
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"Reading symbols from .*${testfile1}\\.\\.\\.done\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
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"add-symbol-file ${testfile1} 0x100000" \
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"add symbol table from file \".*${testfile1}\" at\[ \t\r\n\]+\.text_addr = 0x100000\[\r\n\]+\\(y or n\\) " \
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"y"
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test_eliminated_var my_global_symbol
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test_eliminated_var my_static_symbol
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test_eliminated_var my_global_func
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not_null_var_address main
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# Same thing for symtabs
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gdb_exit
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global GDBFLAGS
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set saved_gdbflags $GDBFLAGS
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set GDBFLAGS "$GDBFLAGS --readnow $binfile1"
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gdb_start
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set GDBFLAGS $saved_gdbflags
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test_eliminated_var my_global_symbol
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test_eliminated_var my_static_symbol
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test_eliminated_var my_global_func
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not_null_var_address main
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# binfile2 contains the symbols that have been eliminated in binfile1. Check
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# the eliminated symbols does not hide these valid ones.
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gdb_exit
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gdb_start
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gdb_test "add-symbol-file ${binfile1} 0x100000" \
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"Reading symbols from .*${testfile1}\\.\\.\\.done\\." \
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"add-symbol-file ${testfile1} 0x100000" \
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"add symbol table from file \".*${testfile1}\" at\[ \t\r\n\]+\.text_addr = 0x100000\[\r\n\]+\\(y or n\\) " \
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"y"
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gdb_test "add-symbol-file ${binfile2} 0x200000" \
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"Reading symbols from .*${testfile2}\\.\\.\\.done\\." \
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"add-symbol-file ${testfile2} 0x200000" \
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"add symbol table from file \".*${testfile2}\" at\[ \t\r\n\]+\.text_addr = 0x200000\[\r\n\]+\\(y or n\\) " \
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"y"
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not_null_var_address my_global_symbol
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not_null_var_address my_static_symbol
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not_null_var_address my_global_func
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not_null_var_address main
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# Same thing, but loading binfile2 before binfile1.
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gdb_exit
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gdb_start
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gdb_test "add-symbol-file ${binfile2} 0x200000" \
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"Reading symbols from .*${testfile2}\\.\\.\\.done\\." \
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"add-symbol-file ${testfile2} 0x200000" \
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"add symbol table from file \".*${testfile2}\" at\[ \t\r\n\]+\.text_addr = 0x200000\[\r\n\]+\\(y or n\\) " \
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"y"
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gdb_test "add-symbol-file ${binfile1} 0x100000" \
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"Reading symbols from .*${testfile1}\\.\\.\\.done\\." \
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"add-symbol-file ${testfile1} 0x100000" \
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"add symbol table from file \".*${testfile1}\" at\[ \t\r\n\]+\.text_addr = 0x100000\[\r\n\]+\\(y or n\\) " \
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"y"
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not_null_var_address my_global_symbol
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not_null_var_address my_static_symbol
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not_null_var_address my_global_func
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not_null_var_address main
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