233 lines
5.9 KiB
Text
233 lines
5.9 KiB
Text
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# Copyright 2013 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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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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}
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standard_testfile .c entry-values-dw.S
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if {[gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
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object {nodebug}] != ""} {
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return -1
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}
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# Start GDB and load object file, compute the function length and
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# the offset of branch instruction in function. They are needed
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# in the Dwarf Assembler below.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}1.o
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set foo_length ""
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# Calculate the offset of the last instruction from the beginning.
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set test "disassemble foo"
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gdb_test_multiple $test $test {
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-re ".*$hex <\\+($decimal)>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
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set foo_length $expect_out(1,string)
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pass $test
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}
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-re ".*$gdb_prompt $" {
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fail $test
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# Bail out here, because we can't do the following tests if
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# $foo_length is unknown.
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return -1
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}
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}
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# Calculate the size of the last instruction. Single instruction
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# shouldn't be longer than 10 bytes.
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set test "disassemble foo+$foo_length,+10"
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gdb_test_multiple $test $test {
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-re ".*($hex) <foo\\+$foo_length>:\[^\r\n\]+\r\n\[ \]+($hex) .*\.\r\n$gdb_prompt $" {
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set start $expect_out(1,string)
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set end $expect_out(2,string)
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set foo_length [expr $foo_length + $end - $start]
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pass $test
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}
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-re ".*$gdb_prompt $" {
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fail $test
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# Bail out here, because we can't do the following tests if
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# $foo_length is unknown.
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return -1
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}
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}
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set bar_length ""
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set bar_call_foo ""
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# Calculate the offset of the last instruction from the beginning.
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set test "disassemble bar"
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gdb_test_multiple $test $test {
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-re ".*$hex <\\+$decimal>:\[ \t\]+call\[^\r\n\]+\r\n\[ \]+$hex <\\+($decimal)>:" {
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set bar_call_foo $expect_out(1,string)
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exp_continue
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}
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-re ".*$hex <\\+($decimal)>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
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set bar_length $expect_out(1,string)
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pass $test
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}
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-re ".*$gdb_prompt $" {
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fail $test
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}
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}
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if { [string equal $bar_call_foo ""] || [string equal $bar_length ""] } {
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fail "Find the call or branch instruction offset in bar"
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# The following test makes no sense if the offset is unknown. We need
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# to update the pattern above to match call or branch instruction for
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# the target architecture.
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return -1
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}
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# Calculate the size of the last instruction.
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set test "disassemble bar+$bar_length,+10"
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gdb_test_multiple $test $test {
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-re ".*($hex) <bar\\+$bar_length>:\[^\r\n\]+\r\n\[ \]+($hex) .*\.\r\n$gdb_prompt $" {
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set start $expect_out(1,string)
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set end $expect_out(2,string)
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set bar_length [expr $bar_length + $end - $start]
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pass $test
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}
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-re ".*$gdb_prompt $" {
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fail $test
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# Bail out here, because we can't do the following tests if
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# $bar_length is unknown.
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return -1
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}
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}
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gdb_exit
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# Make some DWARF for the test.
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set asm_file [standard_output_file $srcfile2]
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Dwarf::assemble $asm_file {
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declare_labels int_label foo_label
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global foo_length bar_length bar_call_foo
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cu {} {
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compile_unit {{language @DW_LANG_C}} {
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int_label: base_type {
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{name int}
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{encoding @DW_ATE_signed}
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{byte_size 4 DW_FORM_sdata}
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}
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foo_label: subprogram {
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{name foo}
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{decl_file 1}
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{low_pc foo addr}
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{high_pc "foo + $foo_length" addr}
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} {
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formal_parameter {
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{type :$int_label}
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{name i}
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{location {DW_OP_reg0} SPECIAL_expr}
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}
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formal_parameter {
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{type :$int_label}
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{name j}
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{location {DW_OP_reg1} SPECIAL_expr}
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}
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}
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subprogram {
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{name bar}
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{decl_file 1}
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{low_pc bar addr}
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{high_pc "bar + $bar_length" addr}
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{GNU_all_call_sites 1}
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} {
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formal_parameter {
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{type :$int_label}
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{name i}
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}
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GNU_call_site {
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{low_pc "bar + $bar_call_foo" addr}
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{abstract_origin :$foo_label}
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} {
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# Faked entry values are reference to variables 'global1'
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# and 'global2' and faked locations are register 0 and
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# register 1.
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GNU_call_site_parameter {
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{location {DW_OP_reg0} SPECIAL_expr}
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{GNU_call_site_value {
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addr global1
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deref_size 4
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} SPECIAL_expr}
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}
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GNU_call_site_parameter {
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{location {DW_OP_reg1} SPECIAL_expr}
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{GNU_call_site_value {
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addr global2
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deref_size 4
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} SPECIAL_expr}
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}
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}
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}
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}
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}
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}
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if {[gdb_compile $asm_file ${binfile}2.o object {nodebug}] != ""} {
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return -1
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}
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if {[gdb_compile [list ${binfile}1.o ${binfile}2.o] \
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"${binfile}" executable {}] != ""} {
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return -1
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}
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clean_restart ${testfile}
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if ![runto_main] {
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fail "Can't run to main"
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return -1
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}
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gdb_breakpoint "foo"
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gdb_continue_to_breakpoint "foo"
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gdb_test_no_output "set print entry-values both"
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gdb_test_sequence "bt" "bt (1)" {
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"\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=2, j=[-]?[0-9]+, j@entry=3\\)"
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"\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
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"\[\r\n\]#2 .* main \\(\\)"
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}
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# Update global variables 'global1' and 'global2' and test that the
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# entry values are updated too.
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gdb_test_no_output "set var global1=10"
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gdb_test_no_output "set var global2=11"
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gdb_test_sequence "bt" "bt (2)" {
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"\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=10, j=[-]?[0-9]+, j@entry=11\\)"
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"\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
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"\[\r\n\]#2 .* main \\(\\)"
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}
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