gdb/testsuite/gdb.base/relocate.exp

# Copyright 2002-2021 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

# relocate.exp -- Expect script to test loading symbols from unrelocated
#		  object files.

standard_testfile .c
append binfile .o

remote_exec build "rm -f ${binfile}"
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" object {debug}] != "" } {
     untested "failed to compile"
     return -1
}

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir

#Check that invalid options are rejected.
foreach x {"-raednow" "readnow" "foo" "-readnow s"} {
    set word [lindex $x [expr [llength $x]-1]]
    gdb_test "add-symbol-file ${binfile} 0 $x" \
	"Unrecognized argument \"$word\"" \
	"add-symbol-file: unknown option $word"
}

# Check that we can pass parameters using any position in the command
# line.
set test "add-symbol-file positionless -readnow"
gdb_test_multiple "add-symbol-file -readnow $binfile 0x100 -s .bss 0x3" $test {
    -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.bss_addr = 0x3\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
# When we use -s as the first argument, the section will be printed
# first as well.
set test "add-symbol-file positionless -s"
gdb_test_multiple "add-symbol-file -s .bss 0x3 -readnow $binfile 0x100" $test {
    -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.bss_addr = 0x3\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
set test "add-symbol-file positionless -s, no -readnow"
gdb_test_multiple "add-symbol-file $binfile 0x100 -s .bss 0x3" $test {
    -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.bss_addr = 0x3\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
# Check that passing "-s .text", no matter the position, always has
# the same result.
set test "add-symbol-file different -s .text, after file"
gdb_test_multiple "add-symbol-file $binfile 0x100 -s .text 0x200" $test {
    -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.text_addr = 0x200\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
set test "add-symbol-file different -s .text, before file"
gdb_test_multiple "add-symbol-file -s .text 0x200 $binfile 0x100" $test {
    -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.text_addr = 0x200\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
# Check that passing a single "-s .text" is equivalent to passing
# the text address in a positional argument.
set test "add-symbol-file -s .text, no address"
gdb_test_multiple "add-symbol-file $binfile -s .text 0x100" $test {
    -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
# Check section addresses can be omitted.
set test "add-symbol-file no address"
gdb_test_multiple "add-symbol-file $binfile" $test {
    -re "add symbol table from file \"${binfile}\"\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
# Test that passing "--" disables option processing.
gdb_test "add-symbol-file -- $binfile 0x100 -s .bss 0x3" \
    "Unrecognized argument \"-s\"" \
    "add-symbol-file with -- disables option processing"
set test "add-symbol-file with -- disables option processing, non-existent filename"
gdb_test_multiple "add-symbol-file -- -non-existent-file 0x100" $test {
    -re "add symbol table from file \"-non-existent-file\" at\r\n\t\.text_addr = 0x100\r\n\\(y or n\\) " {
	gdb_test "y" "-non-existent-file: No such file or directory\." $test
    }
}
# Test that passing the wrong number of arguments to '-s' leads to an
# error.
gdb_test "add-symbol-file $binfile -s" \
    "Missing section name after \"-s\"" \
    "add-symbol-file with -s without section name"
gdb_test "add-symbol-file $binfile -s .bss" \
    "Missing section address after \"-s\"" \
    "add-symbol-file with -s without section address"
# Test that '-s' accepts section names with '-'
set test "add-symbol-file with -s using section name starting with dash"
gdb_test_multiple "add-symbol-file -s -section-name 0x200 $binfile 0x100" $test {
    -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\-section-name_addr = 0x200\r\n\\(y or n\\) " {
	gdb_test "n" "Not confirmed\." $test
    }
}
# Since we're here, might as well test the 'symbol-file' command and
# if its arguments can also be passed at any position.
gdb_test "symbol-file -readnow $binfile" \
    "Reading symbols from ${binfile}\.\.\.\r\nExpanding full symbols from ${binfile}\.\.\." \
    "symbol-file with -readnow first"
clean_restart
gdb_test "symbol-file $binfile -readnow" \
    "Reading symbols from ${binfile}\.\.\.\r\nExpanding full symbols from ${binfile}\.\.\." \
    "symbol-file with -readnow second"
gdb_test "symbol-file -readnow" \
    "no symbol file name was specified" \
    "symbol-file without filename"
gdb_test "symbol-file -- -non-existent-file" \
    "-non-existent-file: No such file or directory\." \
    "symbol-file with -- disables option processing"
clean_restart
gdb_test "symbol-file -readnow -- $binfile" \
    "Reading symbols from ${binfile}\.\.\.\r\nExpanding full symbols from ${binfile}\.\.\." \
    "symbol-file with -- and -readnow"
gdb_test "symbol-file -- $binfile -readnow" \
    "Unrecognized argument \"-readnow\"" \
    "symbol-file with -- and -readnow, invalid option"

clean_restart

gdb_test "add-symbol-file ${binfile} 0 -s" \
    "Missing section name after .-s." \
    "add-symbol-file bare -s"
gdb_test "add-symbol-file ${binfile} 0 -s .whatever" \
    "Missing section address after .-s." \
    "add-symbol-file missing address"

# Load the object file.
gdb_test "add-symbol-file ${binfile} 0" \
	"Reading symbols from .*${testfile}\\.o\\.\\.\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
	"add-symbol-file ${testfile}.o 0" \
	"add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x0\[\r\n\]+\\(y or n\\) " \
	"y"

with_test_prefix "print addresses, static vars" {
    # Print the addresses of static variables.
    set static_foo_addr [get_var_address static_foo]
    set static_bar_addr [get_var_address static_bar]
}

# Make sure they have different addresses.
if { "${static_foo_addr}" == "${static_bar_addr}" } {
  fail "static variables have different addresses"
} else {
  pass "static variables have different addresses"
}

with_test_prefix "print addresses, global vars" {
    # Print the addresses of global variables.
    set global_foo_addr [get_var_address global_foo]
    set global_bar_addr [get_var_address global_bar]
}

# Make sure they have different addresses.
if { "${global_foo_addr}" == "${global_bar_addr}" } {
  fail "global variables have different addresses"
} else {
  pass "global variables have different addresses"
}

with_test_prefix "print addresses, functions" {
    # Print the addresses of functions.
    set function_foo_addr [get_var_address function_foo]
    set function_bar_addr [get_var_address function_bar]
}

# Make sure they have different addresses.
if { "${function_foo_addr}" == "${function_bar_addr}" } {
  fail "functions have different addresses"
} else {
  pass "functions have different addresses"
}

# Now use a variable as an offset to add-symbol-file, and check that
# the functions' addresses change.

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir

gdb_test_no_output "set \$offset = 0x10000"

# Load the object file.
gdb_test "add-symbol-file ${binfile} \$offset" \
	"Reading symbols from .*${testfile}\\.o\\.\\.\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
	"add-symbol-file ${testfile}.o \$offset" \
	"add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x10000\[\r\n\]+\\(y or n\\) " \
	"y"

# Print the addresses of functions.
set new_function_foo_addr [get_var_address function_foo]

# Make sure they have different addresses.
if { "${function_foo_addr}" == "${new_function_foo_addr}" } {
  fail "function foo has a different address"
} else {
  pass "function foo has a different address"
}

# Load the object using symbol-file with an offset and check that
# all addresses are moved by that offset.

set offset 0x10000
clean_restart
set readnow_re "Expanding full symbols from ${binfile}\.\.\."
gdb_test "symbol-file -o $offset $binfile" \
    "Reading symbols from ${binfile}\.\.\.(\r\n$readnow_re)?" \
    "symbol-file with offset"

with_test_prefix "static vars" {
    # Make sure the address of a static variable is moved by offset.
    set new_static_foo_addr [get_var_address static_foo]
    gdb_assert {${new_static_foo_addr} == ${static_foo_addr} + $offset} \
	"static variable foo is moved by offset"
}

with_test_prefix "global vars" {
    # Make sure the address of a global variable is moved by offset.
    set new_global_foo_addr [get_var_address global_foo]
    gdb_assert {${new_global_foo_addr} == ${global_foo_addr} + $offset} \
	"global variable foo is moved by offset"
}

with_test_prefix "functions" {
    # Make sure the address of a function is moved by offset.
    set new_function_foo_addr [get_var_address function_foo]
    gdb_assert {${new_function_foo_addr} == ${function_foo_addr} + $offset} \
	"function foo is moved by offset"
}

# Load the object using add-symbol-file with an offset and check that
# all addresses are moved by that offset.

set offset 0x10000
clean_restart
gdb_test "add-symbol-file -o $offset $binfile" \
    "Reading symbols from ${binfile}\.\.\.(\r\n$readnow_re)?" \
    "add-symbol-file with offset" \
    "add symbol table from file \".*${testfile}\\.o\" with all sections offset by $offset\[\r\n\]+\\(y or n\\) " \
    "y"

with_test_prefix "static scope, 2nd" {
    # Make sure the address of a static variable is moved by offset.
    set new_static_foo_addr [get_var_address static_foo]
    gdb_assert { ${new_static_foo_addr} == ${static_foo_addr} + $offset } \
	"static variable foo is moved by offset"
}

with_test_prefix "global vars, 2nd" {
    # Make sure the address of a global variable is moved by offset.
    set new_global_foo_addr [get_var_address global_foo]
    gdb_assert { ${new_global_foo_addr} == ${global_foo_addr} + $offset } \
	"global variable foo is moved by offset"
}

with_test_prefix "functions, 2nd" {
    # Make sure the address of a function is moved by offset.
    set new_function_foo_addr [get_var_address function_foo]
    gdb_assert { ${new_function_foo_addr} == ${function_foo_addr} + $offset } \
	"function foo is moved by offset"
}

# Re-load the object giving an explicit address for .text

set text [ format "0x%x" [expr ${function_foo_addr} + 0x20000] ]
clean_restart
gdb_test "add-symbol-file $binfile -o $offset $text" \
    "Reading symbols from ${binfile}\.\.\.(\r\n$readnow_re)?" \
    "add-symbol-file with offset, text address given" \
    "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = ${text}\[\r\n\]+with other sections offset by ${offset}\[\r\n\]+\\(y or n\\) " \
    "y"

with_test_prefix "functions, 3rd" {
    # Make sure function has a different addresses now.
    set function_foo_addr [get_var_address function_foo]
    gdb_assert { ${function_foo_addr} != ${new_function_foo_addr} } \
	"function foo has a different address"
}

# Re-load the object giving an explicit address for .data

set data [ format "0x%x" [expr ${global_foo_addr} + 0x20000] ]
clean_restart
gdb_test "add-symbol-file $binfile -o $offset -s .data $data" \
    "Reading symbols from ${binfile}\.\.\.(\r\n$readnow_re)?" \
    "add-symbol-file with offset, data address given" \
    "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.data_addr = ${data}\[\r\n\]+with other sections offset by ${offset}\[\r\n\]+\\(y or n\\) " \
    "y"

with_test_prefix "global vars, 3rd" {
    # Make sure variable has a different addresses now.
    set global_foo_addr [get_var_address global_foo]
    gdb_assert { ${global_foo_addr} != ${new_global_foo_addr} } \
	"global variable foo has a different address"
}

# Now try loading the object as an exec-file; we should be able to print
# the values of variables after we do this.

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_file_cmd ${binfile}

# Check the values of the variables.
gdb_test "print static_foo" "\\\$$decimal = 1"
gdb_test "print static_bar" "\\\$$decimal = 2"
gdb_test "print global_foo" "\\\$$decimal = 3"
gdb_test "print global_bar" "\\\$$decimal = 4"