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Martinez" To: "Guillermo E. Martinez via Libabigail" , Dodji Seketeli Subject: Re: [PATCH v2] ctf-reader: add support to looking debug information in external path Date: Tue, 17 May 2022 10:13:38 -0500 Message-ID: <9201207.lOV4Wx5bFT@sali> Organization: Oracle Corp In-Reply-To: <87ilq4teig.fsf@seketeli.org> References: <87k0apvc7m.fsf@seketeli.org> <20220516183254.2042821-1-guillermo.e.martinez@oracle.com> <87ilq4teig.fsf@seketeli.org> Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-ClientProxiedBy: SA0PR11CA0119.namprd11.prod.outlook.com (2603:10b6:806:d1::34) To MWHPR10MB1407.namprd10.prod.outlook.com (2603:10b6:300:23::20) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: c887112c-c3d4-46ed-3f08-08da3817d3a7 X-MS-TrafficTypeDiagnostic: BYAPR10MB3733:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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Martinez via Libabigail" a > =E9crit: >=20 >=20 > > When an ELF `stripped' file is used to get CTF debug information the EL= F > > symbols used by ctf reader (`symtab_reader::symtab') is split in a > > separate file and even though CTF was designed to be in ELF file after > > be `stripped' this .ctf section can be 'loaded' from and external > > .debug file, for instance the script `find-debuginfo' used to generate > > RPM debug packages split debug information in .debug files. The locatio= n > > of such files is pass as a standard argument from libabigail tools and > > the name of the file is gathering from the `.gnu_debuglink' section. > > > > * include/abg-ctf-reader.h (ctf_reader::create_read_context): > > Add `debug_info_root_paths' argument. > > (ctf_reader::reset_read_context): Likewise. > > * src/abg-ctf-reader.cc: Add `read_context::elf_{handler,fd}_dbg', > > data members. > > (read_context::read_context): Add new `debug_info_root_paths' > > argument. > > (read_context::initialize): Likewise. > > (ctf_reader::create_read_context): Likewise. > > (ctf_reader::close_elf_handler): Release > > `read_context::elf_{handler,fd}_dbg' members. > > (ctf_reader::find_alt_debuginfo): Add new function. > > (ctf_reader::slurp_elf_info): Add new argument `status'. Use > > `find_alt_debuginfo' and `elf_helpers::find_section_by_name' > > to read the symtab and ctf information from an external .debug > > file, the `status' reference is updated. > > (ctf_reader::read_corpus): Verify `status' after `slurp_elf_info'. > > (ctf_reader::reset_read_context): Add new `debug_info_root_path' > > argument. > > * src/abg-elf-helpers.cc (elf_helpers::find_section_by_name): Update > > comment. > > * src/abg-tools-utils.cc (maybe_load_vmlinux_ctf_corpus): > > Adjust `ctf_reader::{create,reset}_read_context'. > > * tests/test-read-ctf.cc: Likewise. > > * tools/abidiff.cc (display_usage): Add `--ctf' command line > > option. > > (main): Adjust `ctf_reader::create_read_context'. > > Likewise. > > * tools/abidw.cc (load_corpus_and_write_abixml): Adjust > > `ctf_reader::create_read_context'. > > * tools/abilint.cc: Likewise. >=20 > I have also adjusted the use of the ctf reader in abipkgdiff. >=20 > Please find below the resulting patch that was applied to master. > Thanks! Thanks to you!! >=20 > > > > Signed-off-by: Guillermo E. Martinez >=20 > Applied to master. >=20 > [...] >=20 > From 1ebd5ff0eb09e6fe78d45065d3bb9bb02468d37c Mon Sep 17 00:00:00 2001 > From: "Guillermo E. Martinez" > Date: Mon, 16 May 2022 13:32:54 -0500 > Subject: [PATCH] ctf-reader: add support to looking debug information in > external path > [...] guillermo