binutils-gdb/gdb/testsuite/gdb.dwarf2/dw2-zero-range.exp

# 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/>.

# Check that the ".debug_ranges entry has start address of zero" complaint
# is triggered for a loaded shared lib.

load_lib dwarf.exp

# This test can only be run on targets which support DWARF-2 and use gas.
require dwarf2_support allow_shlib_tests

standard_testfile .c -shlib.c -dw.S

# Test for presence of complaint, with the lib relocated.

proc_with_prefix test_relocated { exec_path lib_path complaint_re readnow_p } {
    clean_restart $exec_path
    gdb_load_shlib $lib_path

    if { ![runto_main] } {
	return
    }

    gdb_test_no_output "nosharedlibrary"

    # Test for presence of complaint.
    with_complaints 1 {
	set have_complaint 0
	gdb_test_multiple "maint with dwarf synchronous on -- sharedlibrary [file tail $lib_path]" "load shared library" {
	    -re -wrap $complaint_re {
		set have_complaint 1
	    }
	    -re -wrap "" {
	    }
	}

	# The complaint won't be seen if an index is in use.
	if {[have_index $lib_path] == ""} {
	    gdb_assert { $have_complaint } "complaint"
	}

	if { ! $readnow_p } {
	    gdb_test "maint expand-symtabs $::srcfile2" $complaint_re \
		"complaint when expanding symtab"
	}
    }
}

# Test for presence of complaint, with the lib unrelocated.

proc_with_prefix test_unrelocated { exec_path lib_path complaint_re readnow_p } {
    clean_restart
    gdb_test_no_output "maint set dwarf synchronous on"

    with_complaints 1 {
	gdb_load $lib_path
	set have_complaint [regexp $complaint_re.* $::gdb_file_cmd_msg]

	# The complaint won't be seen if an index is in use.
	if {[have_index $lib_path] == ""} {
	    gdb_assert { $have_complaint } "complaint"
	}

	gdb_test_no_output "maint set dwarf synchronous off"

	if { ! $readnow_p } {
	    gdb_test "maint expand-symtabs $::srcfile2" $complaint_re \
		"complaint when expanding symtab"
	}
    }
}

# Test with both a .debug_ranges section (DWARF 4) and a .debug_rnglists
# section (DWARF 5).

foreach_with_prefix ranges_sect {ranges rnglists} {
    set asm_file [standard_output_file ${ranges_sect}-$srcfile3]

    if { $ranges_sect == "ranges" } {
	Dwarf::assemble $asm_file {
	    global srcdir subdir srcfile2
	    declare_labels ranges_label

	    cu {} {
		compile_unit {
		    {language @DW_LANG_C}
		    {name $srcfile2}
		    {ranges ${ranges_label} DW_FORM_sec_offset}
		} {
		    subprogram {
			{external 1 flag}
			{name foo}
		    }
		}
	    }

	    ranges {is_64 [is_64_target]} {
		ranges_label: sequence {
		    base 0
		    range 0 1
		}
	    }
	}
    } elseif { $ranges_sect == "rnglists" } {
	Dwarf::assemble $asm_file {
	    global srcdir subdir srcfile2
	    declare_labels rnglists_label

	    cu {
		version 5
	    } {
		compile_unit {
		    {language @DW_LANG_C}
		    {name $srcfile2}
		    {ranges ${rnglists_label} DW_FORM_sec_offset}
		} {
		    subprogram {
			{external 1 flag}
			{name foo}
		    }
		}
	    }

	    rnglists {} {
		table {} {
		    rnglists_label: list_ {
			start_end 0 1
		    }
		}
	    }
	}
    } else {
	error "invalid ranges section kind"
    }

    set lib_path [standard_output_file shr1-${ranges_sect}.sl]
    set lib_sources [list ${srcdir}/${subdir}/$srcfile2 $asm_file]
    if { [gdb_compile_shlib $lib_sources $lib_path {nodebug}] != "" } {
	untested "failed to compile"
	return
    }

    set exec_sources ${srcdir}/${subdir}/${srcfile}
    set exec_path ${binfile}-${ranges_sect}
    set exec_opts [list debug shlib=${lib_path}]
    if { [gdb_compile $exec_sources $exec_path executable $exec_opts] != ""} {
	untested "failed to compile"
	return
    }

    set complaint_re ".debug_${ranges_sect} entry has start address of zero"
    set complaint_re \
	"During symbol reading: $complaint_re \\\[in module \[^\r\n\]*\\\]"

    set readnow_p [readnow]

    test_relocated $exec_path $lib_path $complaint_re $readnow_p
    test_unrelocated $exec_path $lib_path $complaint_re $readnow_p
}