gdb/testsuite/gdb.dwarf2/dw2-prologue-end-2.exp

# Copyright 2023-2024 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/>.

# Check that prologue analysis in foo is correct in the presence of a
# prologue_end marker in immediately following function bar.

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 .S

set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
    global srcdir subdir srcfile srcfile2
    declare_labels lines_label

    cu {} {
	compile_unit {
	    {language @DW_LANG_C}
	    {name dw2-prologue-end.c}
	    {stmt_list ${lines_label} DW_FORM_sec_offset}
	} {
	    subprogram {
		{external 1 flag}
		{name foo}
		{low_pc foo_label addr}
		{high_pc foo_end addr}
	    }
	    subprogram {
		{external 1 flag}
		{name bar}
		{low_pc bar_label addr}
		{high_pc bar_end addr}
	    }
	}
    }

    lines {version 5} lines_label {
	set diridx [include_dir "${srcdir}/${subdir}"]
	file_name "$srcfile" $diridx

	program {
	    DW_LNS_set_file $diridx

	    DW_LNE_set_address foo_label
	    line [gdb_get_line_number "Foo body"]
	    DW_LNS_copy

	    DW_LNE_set_address bar_label
	    DW_LNS_set_prologue_end
	    line [gdb_get_line_number "Bar body"]
	    DW_LNS_copy

	    DW_LNE_set_address bar_end
	    DW_LNE_end_sequence
	}
    }
}

if { [prepare_for_testing "failed to prepare" ${testfile} \
	  [list $srcfile $asm_file] {nodebug}] } {
    return -1
}

# Don't runto main here, otherwise the following doesn't
# function as regression test for PR30369.

# Get the "break foo" address.

set break_addr ""
gdb_test_multiple "break foo" "" {
    -re -wrap "at ($hex):\[^\r\n\]*" {
	set break_addr $expect_out(1,string)
	pass $gdb_test_name
    }
}

if { $break_addr == "" } {
    return
}

# Get the "bar_label" address.

set bar_label_addr ""
gdb_test_multiple "print /x &bar_label" "" {
    -re -wrap "= ($hex)" {
	set bar_label_addr $expect_out(1,string)
	pass $gdb_test_name
    }
}

if { $bar_label_addr == "" } {
    return
}

# Check that bar immediately follows foo.  Otherwise the following doesn't
# function as regression test for PR30369.

gdb_test "print &foo_end == &bar_label" " = 1"

# Check that the breakpoint is set at the expected address.  Regression test
# for PR30369.

gdb_assert { $break_addr < $bar_label_addr }