61dee7220e
This commit fixes fission support in the Dwarf assembler. I added the new test gdb.dwarf2/fission-absolute-dwo.exp which is a simple example of using the fission support. I also rewrote the existing test gdb.dwarf2/fission-multi-cu.exp to use the new functionality (instead of using an x86-64 only assembler file). To better support compiling the assembler files produced by the Dwarf assembler I have added the new proc build_executable_and_dwo_files in lib/dwarf.exp, this replaces build_executable_from_fission_assembler, all the tests that used the old proc have been updated. Where the old proc assumed a single .S source file which contained the entire test, the new proc allows for multiple source files. The Dwarf assembler already had some fission support, however, this was not actually used in any tests, and when I tried using it there were a few issues. The biggest change is that we now generate DW_FORM_GNU_addr_index instead of DW_FORM_addr for the low and high pc in _handle_macro_at_range, support for the DW_FORM_GNU_addr_index is new in this commit. gdb/testsuite/ChangeLog: * gdb.dwarf2/fission-absolute-dwo.c: New file. * gdb.dwarf2/fission-absolute-dwo.exp: New file. * gdb.dwarf2/fission-base.exp: Use build_executable_and_dwo_files instead of build_executable_from_fission_assembler. * gdb.dwarf2/fission-loclists-pie.exp: Likewise. * gdb.dwarf2/fission-loclists.exp: Likewise.
58 lines
1.6 KiB
Plaintext
58 lines
1.6 KiB
Plaintext
# Copyright 2016-2021 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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#
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# This testcase exercises PR symtab/19999.
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# For Fission, while we shouldn't add the DWARF base address to addresses
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# coming from .debug_addr, will still need to add the base offset in case
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# we're debugging a PIE executable.
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load_lib dwarf.exp
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# We run objcopy locally to split out the .dwo file.
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if [is_remote host] {
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return 0
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}
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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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# This test can only be run on x86-64 targets.
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if {![istarget x86_64-*] || ![is_lp64_target]} {
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return 0
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}
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standard_testfile .S
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set obj [standard_output_file "${testfile}.o"]
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set dwo [standard_output_file "${testfile}.dwo"]
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if [build_executable_and_dwo_files "$testfile.exp" "${binfile}" \
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{nodebug ldflags=-pie} \
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[list $srcfile [list nodebug split-dwo additional_flags=-DDWO=$dwo] \
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$obj]] {
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return -1
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}
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clean_restart $binfile
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if ![runto_main] {
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return -1
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}
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# Verify gdb can find argc.
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gdb_test "p argc" " = 1"
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