From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from alln-iport-8.cisco.com (alln-iport-8.cisco.com [173.37.142.95]) by mx.groups.io with SMTP id smtpd.web10.31826.1605032054657341006 for ; Tue, 10 Nov 2020 10:14:20 -0800 Authentication-Results: mx.groups.io; dkim=fail reason="signature has expired" header.i=@cisco.com header.s=iport header.b=YfyevQop; spf=pass (domain: cisco.com, ip: 173.37.142.95, mailfrom: dzagorui@cisco.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3415; q=dns/txt; s=iport; t=1605032054; x=1606241654; h=from:to:subject:date:message-id; bh=DsFFQLPH6qUCQVhV9aF/JOy+zyzAsVeBuJt8HE0UPNU=; b=YfyevQop5YnyjT9qwfyDEUGoiziuH78Fd2InFCX/Fh9jQGbTgcq7HbNd Yzciz08CbLdSVKOUA0tYfdSX2CfoNUjyPbG/iEe1QfIlj/fbhnaX3bdf8 oa+rV842zNuBJms7Oiucg+AzYC546MxIyq2NgHJeAu9hOcSHhmk4vEkKd 4=; X-IPAS-Result: =?us-ascii?q?A0BIEQCY16pffZJdJa1iHAEBATwBAQQEAQECAQEHAQGBZ?= =?us-ascii?q?oE8AoFeVQEyLrILCwEBAQ0BASUKBAEBhmACJTgTAgMBAQEDAgMBAQEBBQEBA?= =?us-ascii?q?QIBBgQUAQGGPAyFcgEtfgMBAlsjIYMmAYMGD64ggXUzhFBDRIMrgTwGgTYCA?= =?us-ascii?q?QGIPYUAG4FBP4ERg1CCXQQXgQ2GLwS4KYJ3iQ2SAwIgoXMBnkuVTwIEBgUCF?= =?us-ascii?q?YFrIYFZMxoIGxWDJFAZDVaWToVEQQMwCy0CBgoBAQMJjAKCRgEB?= X-IronPort-Anti-Spam-Filtered: true X-IronPort-AV: E=Sophos;i="5.77,467,1596499200"; d="scan'208";a="604584540" Received: from rcdn-core-10.cisco.com ([173.37.93.146]) by alln-iport-8.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 10 Nov 2020 18:14:13 +0000 Received: from sjc-ads-9103.cisco.com (sjc-ads-9103.cisco.com [10.30.208.113]) by rcdn-core-10.cisco.com (8.15.2/8.15.2) with ESMTPS id 0AAIECVu013073 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Tue, 10 Nov 2020 18:14:13 GMT Received: by sjc-ads-9103.cisco.com (Postfix, from userid 487941) id 4298ACC1251; Tue, 10 Nov 2020 10:14:12 -0800 (PST) From: "Denys Zagorui -X (dzagorui - GLOBALLOGIC INC@Cisco)" To: openembedded-core@lists.openembedded.org Subject: [PATCH] binutils: reproducibility: reuse debug-prefix-map for stabs Date: Tue, 10 Nov 2020 18:14:12 +0000 Message-Id: <1605032052-91580-1-git-send-email-dzagorui@cisco.com> X-Mailer: git-send-email 2.7.4 X-Outbound-SMTP-Client: 10.30.208.113, sjc-ads-9103.cisco.com X-Outbound-Node: rcdn-core-10.cisco.com powerpc 32bit Linux Kernel widely uses .stabs pseudo-op to produce debugging information in stabs format. Faced an issue that during Linux Kernel build with Yocto build system for 32bit powerpc platform resulting vmlinux contains absolute path in .stabstr section that cannot be remapped with -fdebug-prefix-map option. Yocto uses scripts/mkmakefile Linux Kernel build approach that allows to store all generated files outside of kernel source tree. With this approach each compilier invocation is performed with an absolute path to a file that will be compiled and this absolute path is recorded in init stab. There is no way to remap this path. Reuse remap_debug_filename api to make -fdebug-prefix-map flag aplicable for init stab. Signed-off-by: Denys Zagorui --- meta/recipes-devtools/binutils/binutils-2.35.inc | 1 + ...-reproducibility-for-stabs-debugging-data.patch | 35 ++++++++++++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 meta/recipes-devtools/binutils/binutils/0017-gas-improve-reproducibility-for-stabs-debugging-data.patch diff --git a/meta/recipes-devtools/binutils/binutils-2.35.inc b/meta/recipes-devtools/binutils/binutils-2.35.inc index 5ae9ec4..bc9107b 100644 --- a/meta/recipes-devtools/binutils/binutils-2.35.inc +++ b/meta/recipes-devtools/binutils/binutils-2.35.inc @@ -41,5 +41,6 @@ SRC_URI = "\ file://0014-Fix-rpath-in-libtool-when-sysroot-is-enabled.patch \ file://0015-sync-with-OE-libtool-changes.patch \ file://0016-Check-for-clang-before-checking-gcc-version.patch \ + file://0017-gas-improve-reproducibility-for-stabs-debugging-data.patch \ " S = "${WORKDIR}/git" diff --git a/meta/recipes-devtools/binutils/binutils/0017-gas-improve-reproducibility-for-stabs-debugging-data.patch b/meta/recipes-devtools/binutils/binutils/0017-gas-improve-reproducibility-for-stabs-debugging-data.patch new file mode 100644 index 0000000..42e0c1c --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/0017-gas-improve-reproducibility-for-stabs-debugging-data.patch @@ -0,0 +1,35 @@ +From aa6586e80fc6fcd739aa959a71e4cf064cdef072 Mon Sep 17 00:00:00 2001 +From: Denys Zagorui +Date: Mon, 9 Nov 2020 15:39:10 +0000 +Subject: [PATCH] gas: improve reproducibility for stabs debugging data format + + * config/obj-elf (obj_elf_init_stab_section): Improve + reproducibility for stabs debugging data format + +Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=0541201782c006c09d029d18a45c6e743cfea906] +--- + gas/config/obj-elf.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c +index de22b5a1da..2025df8542 100644 +--- a/gas/config/obj-elf.c ++++ b/gas/config/obj-elf.c +@@ -2374,12 +2374,13 @@ obj_elf_init_stab_section (segT seg) + p = frag_more (12); + /* Zero it out. */ + memset (p, 0, 12); +- file = as_where (NULL); ++ file = remap_debug_filename (as_where (NULL)); + stabstr_name = concat (segment_name (seg), "str", (char *) NULL); + stroff = get_stab_string_offset (file, stabstr_name, TRUE); + know (stroff == 1 || (stroff == 0 && file[0] == '\0')); + md_number_to_chars (p, stroff, 4); + seg_info (seg)->stabu.p = p; ++ xfree ((char *) file); + } + + #endif +-- +2.20.1 + -- 2.7.4