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9a0de6abdd
To support DWARF 5 in the DWARF assembler line tables, we currently copy the first user-provided directory and the first user-provided files and make them elements at indices 0 in the directory and file name tables. That was a sufficient behavior at the time (see commit44fda08939("[gdb/testsuite] Support .debug_line v5 in dwarf assembler")), but in the following patches, I would need to have finer grained control on what is generated exactly. For example, I'd like to generate a DWARF 5 line table with just a single file and a single directory. Get rid of this behavior, and implement what is suggested in44fda08939: make include_dir return the directory index that can be used to refer to that directory entry (based on the DWARF version), and use it afterwards. Adjust dw2-lines.exp and dw2-prologue-end.exp accordingly. Their produced DWARF5 binaries will change a bit, in that they will now have a single directory and file, where they had two before. But it doesn't change the expected GDB behavior. Change-Id: I5459b16ac9b7f28c34c9693c35c9afd2ebb3aa3b
107 lines
2.8 KiB
Plaintext
107 lines
2.8 KiB
Plaintext
# Copyright 2022 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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# Check that GDB can honor the prologue_end flag the compiler can place
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# in the line-table data.
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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 .S
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set asm_file [standard_output_file $srcfile2]
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Dwarf::assemble $asm_file {
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global srcdir subdir srcfile srcfile2
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declare_labels lines_label
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get_func_info main
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cu {} {
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compile_unit {
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{language @DW_LANG_C}
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{name dw2-prologue-end.c}
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{stmt_list ${lines_label} DW_FORM_sec_offset}
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} {
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subprogram {
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{external 1 flag}
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{name main}
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{low_pc $main_start addr}
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{high_pc "$main_start + $main_len" addr}
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}
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}
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}
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lines {version 5} lines_label {
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set diridx [include_dir "${srcdir}/${subdir}"]
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file_name "$srcfile" $diridx
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program {
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DW_LNS_set_file $diridx
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DW_LNE_set_address $main_start
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line [gdb_get_line_number "main prologue"]
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DW_LNS_copy
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DW_LNE_set_address main_label
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line [gdb_get_line_number "main assign m"]
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DW_LNS_copy
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DW_LNE_set_address main_assign_n
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line [gdb_get_line_number "main assign n"]
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DW_LNS_copy
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DW_LNE_set_address main_end_prologue
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line [gdb_get_line_number "main assign o"]
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DW_LNS_set_prologue_end
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DW_LNS_copy
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DW_LNE_set_address main_end
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line [gdb_get_line_number "main end"]
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DW_LNS_copy
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DW_LNE_end_sequence
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}
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}
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}
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if { [prepare_for_testing "failed to prepare" ${testfile} \
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[list $srcfile $asm_file] {nodebug}] } {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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set prologue_end_line [gdb_get_line_number "main assign o"]
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gdb_test "frame" ".*main \\\(\\\) at \[^\r\n\]*:$prologue_end_line\r\n.*"
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with_test_prefix "ignore-prologue-end" {
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clean_restart $binfile
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gdb_test_no_output "maintenance set ignore-prologue-end-flag on"
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if ![runto_main] {
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return -1
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}
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# If we ignore the prologue-end flag, we should stop at the first statement
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# of main which assigns m.
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set prologue_end_line [gdb_get_line_number "main assign m"]
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gdb_test "frame" ".*main \\\(\\\) at \[^\r\n\]*:$prologue_end_line\r\n.*"
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}
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