Changes in 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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/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-13.1/sys/conf/ldscript.powerpc64