Date: Tue, 31 Jul 2018 15:25:22 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229050] [meta] lld linker migration tracking PR Message-ID: <bug-229050-227-O9ttoPRGby@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-229050-227@https.bugs.freebsd.org/bugzilla/> References: <bug-229050-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229050 --- Comment #4 from commit-hook@freebsd.org --- A commit references this bug: Author: emaste Date: Tue Jul 31 15:25:03 UTC 2018 New revision: 336972 URL: https://svnweb.freebsd.org/changeset/base/336972 Log: lld: [ELF][ARM] Implement support for Tag_ABI_VFP_args The Tag_ABI_VFP_args build attribute controls the procedure call standard used for floating point parameters on ARM. The values are: 0 - Base AAPCS (FP Parameters passed in Core (Integer) registers 1 - VFP AAPCS (FP Parameters passed in FP registers) 2 - Toolchain specific (Neither Base or VFP) 3 - Compatible with all (No use of floating point parameters) If the Tag_ABI_VFP_args build attribute is missing it has an implicit value of 0. We use the attribute in two ways: * Detect a clash in calling convention between Base, VFP and Toolchain. we follow ld.bfd's lead and do not error if there is a clash between an implicit Base AAPCS caused by a missing attribute. Many projects including the hard-float (VFP AAPCS) version of glibc contain assembler files that do not use floating point but do not have Tag_ABI_VFP_args. * Set the EF_ARM_ABI_FLOAT_SOFT or EF_ARM_ABI_FLOAT_HARD ELF header flag for Base or VFP AAPCS respectively. This flag is used by some ELF loaders. References: * Addenda to, and Errata in, the ABI for the ARM Architecture for Tag_ABI_VFP_args * Elf for the ARM Architecture for ELF header flags Fixes LLVM PR36009 PR: 229050 Obtained from: llvm r338377 by Peter Smith Changes: head/contrib/llvm/tools/lld/ELF/Arch/ARM.cpp head/contrib/llvm/tools/lld/ELF/Config.h head/contrib/llvm/tools/lld/ELF/InputFiles.cpp --=20 You are receiving this mail because: You are the assignee for the bug.=
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