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# Copyright 2021-2024 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/>.
# This is a basic first test for using the testsuite's Dwarf assembler to
# create split debug information. There's not unique feature of GDB being
# tested here, this exists only as a basic test for the testsuite
# infrastructure.
load_lib dwarf.exp
# This test can only be run on targets which support DWARF-2 and use gas.
require dwarf2_support
standard_testfile .c -dw.S
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcfile binfile objdir
set debug_addr_lbl ".unknown!!"
# The information that will be split out into the .dwo file.
cu {fission 1} {
# Capture a label to the current start of the .debug_addr
# section. This will be passed to DW_AT_GNU_addr_base in the
# non-split CU later.
set debug_addr_lbl [debug_addr_label]
compile_unit {
{language @DW_LANG_C}
{name ${srcfile}}
{DW_AT_comp_dir ${objdir}}
{DW_AT_GNU_dwo_id 0x1234 DW_FORM_data8}
} {
declare_labels int4_type struct_type
int4_type: DW_TAG_base_type {
{DW_AT_byte_size 4 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name integer}
}
struct_type: DW_TAG_structure_type {
{DW_AT_name "foo_t"}
{DW_AT_byte_size 12 DW_FORM_sdata}
} {
member {
{name "aa"}
{type :$int4_type}
{data_member_location 0 data1}
}
member {
{name "bb"}
{type :$int4_type}
{data_member_location 4 data1}
}
member {
{name "cc"}
{type :$int4_type}
{data_member_location 8 data1}
}
}
DW_TAG_variable {
{DW_AT_name global_var}
{DW_AT_type :$struct_type}
{DW_AT_location {
DW_OP_GNU_addr_index [gdb_target_symbol global_var]
} SPECIAL_expr}
{external 1 flag}
}
subprogram {
{external 1 flag}
{DW_AT_name main DW_FORM_string}
{MACRO_AT_func {main}}
}
}
}
# The information that will remain in the .o file.
cu {} {
compile_unit {
{DW_AT_GNU_dwo_name ${binfile}.dwo DW_FORM_strp}
{DW_AT_comp_dir ${objdir}}
{DW_AT_GNU_dwo_id 0x1234 DW_FORM_data8}
{DW_AT_GNU_addr_base $debug_addr_lbl}
} {
# Nothing.
}
}
}
# Compile both source files to create the executable. As we compile
# ASM_FILE we split out the debug information into the dwo file.
set object_file [standard_output_file ${testfile}.o]
if { [build_executable_and_dwo_files "${testfile}.exp" ${binfile} {nodebug} \
[list $asm_file {nodebug split-dwo} ${object_file}] \
[list $srcfile {nodebug}]] } {
return -1
}
# Now we can start GDB.
clean_restart ${testfile}
if ![runto_main] {
return -1
}
# Print the type of global_var. This type information is entirely
# fictional, it only exists in the DWARF. If we don't have the DWARF
# information then there's no way we can print this.
gdb_test "p global_var" " = \\{aa = 0, bb = 0, cc = 0\\}"
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