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Accepting request 1033712 from home:lwfinger:branches:devel:tools:compiler

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- Modify yasm to support .note.gnu.property note section
  This feature is needed to build VirtualBox-7.0.x.
  Patch from https://src.fedoraproject.org/rpms/yasm/pull-request/1#_2.
  File "yasm-Update-elf-objfmt.c.patch" added.

OBS-URL: https://build.opensuse.org/request/show/1033712
OBS-URL: https://build.opensuse.org/package/show/devel:tools:compiler/yasm?expand=0&rev=33
This commit is contained in:
Martin Pluskal 2022-11-07 08:32:40 +00:00 committed by Git OBS Bridge
parent 4a020db440
commit eaab39c3c9
3 changed files with 39 additions and 1 deletions
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29
yasm-Update-elf-objfmt.c.patch Normal file
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@ -0,0 +1,29 @@
From: kalebskeithley <kaleb@redhat.com>
Date: Thu, 21 May 2020 09:12:36 -0400
Subject: [PATCH] Update elf-objfmt.c
tl;dnr: add support for note.gnu.property note sections.
ceph has a few optimized crc32 routines hand written in assembly in yasm format. (Nobody appears to have the stomach for rewriting them in another format.) Fedora requires that libraries be CET enabled. IOW all .o comprising a shared library need a note.gnu.properties NOTE section with some magic bits that tell the linker that the .o was compiled with the appropriate options.
I can add such a note section, but without this change yasm will not set the correct section flag and I have to resort to some dd magic to set the correct section type before linking all the .o files into the shlib.
---
modules/objfmts/elf/elf-objfmt.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/modules/objfmts/elf/elf-objfmt.c b/modules/objfmts/elf/elf-objfmt.c
index 0c3a1426..c4360c03 100644
--- a/modules/objfmts/elf/elf-objfmt.c
+++ b/modules/objfmts/elf/elf-objfmt.c
@@ -1077,6 +1077,10 @@ elf_objfmt_section_switch(yasm_object *object, yasm_valparamhead *valparams,
align = 0;
data.type = SHT_PROGBITS;
data.flags = 0;
+ } else if (strcmp(sectname, ".note.gnu.property") == 0) {
+ align = 8;
+ data.type = SHT_NOTE;
+ data.flags = 0;
} else {
/* Default to code */
align = 1;

7
yasm.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Sat Nov 5 17:18:41 UTC 2022 - Larry Finger <Larry.Finger@gmail.com>
- Modify yasm to support .note.gnu.property note section
Patch from https://src.fedoraproject.org/rpms/yasm/pull-request/1#_2.
File "yasm-Update-elf-objfmt.c.patch" added.
-------------------------------------------------------------------
Fri Aug 2 08:22:42 UTC 2019 - Martin Liška <mliska@suse.cz>

4
yasm.spec
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@ -1,7 +1,7 @@
#
# spec file for package yasm
#
# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
# Copyright (c) 2022 SUSE LLC
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -27,6 +27,7 @@ Source: http://www.tortall.net/projects/yasm/releases/yasm-%{version}.ta
Patch0: %{name}-no-build-date.patch
Patch1: %{name}-no-rpm-opt-flags.patch
Patch2: yasm-re2c-nogendate.patch
Patch3: yasm-Update-elf-objfmt.c.patch
BuildRequires: python3-devel
BuildRequires: xmlto
@ -51,6 +52,7 @@ libyasm.
%patch0 -p1
%patch1
%patch2 -p1
%patch3 -p1
%build
%global _lto_cflags %{_lto_cflags} -ffat-lto-objects