Changes in ldscript.powerpc64

bb5f7016 - kernel: Add defination of .init_array and .fini_array for all other platforms

Mon, 02 Sep 2024 04:26:48 +0000

kernel: Add defination of .init_array and .fini_array for all other platformsCurrently these sections are not used but defined only for amd64 andi386. Added them for all other platforms to keep all platforms in sync.There should be no functional change.This change is extracted from a bigger patch [1] of hselasky, withadditional fix for the order of .fini_array section.1. https://reviews.freebsd.org/D40467Obtained from: hselaskyMFC after: 1 weekDifferential Revision: https://reviews.freebsd.org/D45214(cherry picked from commit 3e76d05231b0aa77d922bdbc9abf62d9747a91ab) List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

71625ec9 - sys: Remove $FreeBSD$: one-line .c comment pattern

Wed, 16 Aug 2023 17:54:24 +0000

sys: Remove $FreeBSD$: one-line .c comment patternRemove /^/[*/]\s*\$FreeBSD\$.*\n/ List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

30dc2aeb - [PowerPC] Fix build-id note on powerpc64 kernel

Mon, 01 Jun 2020 19:40:59 +0000

[PowerPC] Fix build-id note on powerpc64 kernelDue to the ordering of the powerpc64 linker script, we were discardingall notes before emitting .note.gnu.build-id. This had the effect ofgenerating an empty build id section and breaking the kern.build_idsysctl added in r348611.powerpc and powerpcspe are uneffected.PR: 246430MFC after: 3 daysSponsored by: Tag1 Consulting, Inc. List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

9411e24d - [PowerPC] kernel ifunc support for powerpc*, fix ppc64 relocation oddities.

Thu, 07 May 2020 19:32:49 +0000

[PowerPC] kernel ifunc support for powerpc*, fix ppc64 relocation oddities.This is a general cleanup of the relocatable kernel support on powerpc,needed to enable kernel ifuncs. * Fix some relocatable issues in the kernel linker, and change to using a RELOCATABLE_KERNEL #define instead of #ifdef __powerpc__ for parts that other platforms can use in the future if they wish to have ET_DYN kernels. * Get rid of the DB_STOFFS hack now that the kernel is relocated to the DMAP properly across the board on powerpc64. * Add powerpc64 and powerpc32 ifunc functionality. * Allow AIM64 virtual mode OF kernels to run from the DMAP like other AIM64 by implementing a virtual mode restart. This fixes the runtime address on PowerMac G5. * Fix symbol relocation problems on post-relocation kernels by relocating the symbol table. * Add an undocumented method for supplying kernel symbols on powernv and other powerpc machines using linux-style kernel/initrd loading -- If you pass the kernel in as the initrd as well, the copy resident in initrd will be used as a source for symbols when initializing the debugger. This method is subject to removal once we have a better way of doing this.Approved by: jhibbitsRelnotes: yesSponsored by: Tag1 Consulting, Inc.Differential Revision: https://reviews.freebsd.org/D23156 List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

74cd06b4 - Expose the kernel's build-ID through sysctl

Tue, 04 Jun 2019 13:07:10 +0000

Expose the kernel's build-ID through sysctlAfter our migration (of certain architectures) to lld the kernel is builtwith a unique build-ID. Make it available via a sysctl and uname(1) toallow the user to identify their running kernel.Submitted by: Ali Mashtizadeh MFC after: 2 weeksRelnotes: YesEvent: Waterloo Hackathon 2019Differential Revision: https://reviews.freebsd.org/D20326 List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

0632bb89 - Fix PPC64 kernel build with clang8 + lld8

Wed, 22 May 2019 15:56:41 +0000

Fix PPC64 kernel build with clang8 + lld8This patch fixes the following lld link errors:- unsupported dynamic relocations on read-only sections- out-of-range TOC referencesSubmitted by: git_bdragon.rtk0.netReviewed by: jhibbits, luporlMFC after: 2 weeksDifferential Revision: https://reviews.freebsd.org/D19352 List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

484717a4 - powerpc64: Fix kernel ldscript to only emit one PT_LOAD segment

Fri, 29 Mar 2019 03:01:21 +0000

powerpc64: Fix kernel ldscript to only emit one PT_LOAD segmentSummary:kexec-lite cannot currently handle multiple PT_LOAD segments. In somecases the compiler generates multiple PT_LOAD segments for an unknownreason, causing boot to fail from kexec-lite.Submitted by: Brandon Bergren (older version)Differential Revision: https://reviews.freebsd.org/D19574 List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

29064656 - powerpc64: Align frequently used/exclusive data on cacheline boundaries

Sun, 19 Aug 2018 19:00:44 +0000

powerpc64: Align frequently used/exclusive data on cacheline boundariesThis is effectively a merge from amd64 of r312888, r323235, and r333486.I've been running this on my POWER9 Talos for some time now with no illeffects.Suggested by: mjg List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

70f65499 - Add support for 64-bit PowerPC kernels to be directly loaded by kexec, which

Fri, 29 Dec 2017 20:30:10 +0000

Add support for 64-bit PowerPC kernels to be directly loaded by kexec, whichis used as the bootloader on a number of PPC64 platforms. This involves thefollowing pieces:- Making the first instruction a valid kernel entry point, since kexec ignores the ELF entry value. This requires a separate section and linker magic to prevent the linker from filling the beginning of the section with stubs.- Adding an entry point at 0x60 past the first instruction for systems lacking firmware CPU shutdown support (notably PS3).- Linker script changes to support the above.MFC after: 1 month List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

7cc0ad62 - Make __startkernel line up with KERNBASE, so that the math to compute the

Tue, 19 Dec 2017 15:50:46 +0000

Make __startkernel line up with KERNBASE, so that the math to compute theapplied relocation offset in link_elf.c works as intended. We may want torevisit how that works in future, for example by having elf_reloc_self()actually store the numbers it is using rather than computing them later,but this fixes symbol lookup after r326203.Reported by: andreast@Pointy hat to: me List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

25449e73 - Avoid emitting a PT_INTERP section for powerpc64 kernels and arrange for

Sat, 25 Nov 2017 21:45:51 +0000

Avoid emitting a PT_INTERP section for powerpc64 kernels and arrange forthe first instruction to be at the start of the text segment. This allowsthe kernel to be booted correctly by stock kexec-lite.MFC after: 2 weeks List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

45eff3df - remove CONSTRUCTORS from kernel linker scripts

Thu, 28 Jul 2016 13:54:46 +0000

remove CONSTRUCTORS from kernel linker scriptsThe linker script CONSTRUCTORS keyword is only meaningful "when linkingobject file formats which do not support arbitrary sections, such asECOFF and XCOFF"[1] and is ignored for other object file formats.LLVM's lld does not yet accept (and ignore) CONSTRUCTORS, so just removeCONSTRUCTORS from the linker scripts as it has no effect.[1] https://sourceware.org/binutils/docs/ld/Output-Section-Keywords.htmlReviewed by: kibSponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D7343 List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

466d476a - Fix build with new binutils. This gets a working kernel with GCC 5.2 and

Sun, 29 Nov 2015 06:40:09 +0000

Fix build with new binutils. This gets a working kernel with GCC 5.2 andbinutils 2.24. Without this, the self-relocation code in locore64.S wasfailing due to a misaligned TOC section.MFC after: 2 weeks List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

bb808254 - Refactor PowerPC (especially AIM) init sequence to be less baroque.

Sun, 18 Jan 2015 18:32:43 +0000

Refactor PowerPC (especially AIM) init sequence to be less baroque.MFC after: 2 months List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

66c80959 - Rename elf-powerpc into elf-powerpc-freebsd in binutils

Fri, 10 Oct 2014 06:24:09 +0000

Rename elf*-powerpc into elf*-powerpc-freebsd in binutilsThe powerpc support was the only supported architecture not prepending the elf format namewith "-freebsd" in base this change makes it consistent with other architectures.On newer version of binutils the powerpc format is also prepended with "-freebsd".Also modify the kernel ldscripts in that regards.As a result it is now possible cross build the kernel on powerpc using newer binutilsDifferential Revision: https://reviews.freebsd.org/D926Differential Revision: https://reviews.freebsd.org/D928 List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

618abe8b - Add the .opd section, this is helps booting a profiled kernel.

Fri, 20 Jan 2012 18:52:31 +0000

Add the .opd section, this is helps booting a profiled kernel.Adjust the OUTPUT_ARCH and use the builtin ALIGN() to adjust the data segment. List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

6ba63f2d - In fact, we don't need any of these __DYNAMIC. it is a.out leftover and commented out.

Thu, 20 Jan 2011 19:24:50 +0000

In fact, we don't need any of these __DYNAMIC. it is a.out leftover and commented out. List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64

060d347d - Add powerpc64 kernel ldscript.

Tue, 13 Jul 2010 05:43:43 +0000

Add powerpc64 kernel ldscript. List of files: /freebsd-14.2/sys/conf/ldscript.powerpc64