MFC: r351429,351430,351485,351497,351498

Merge changes to turn off -Werror for gcc 4.2.1 by default as part of
the plan to deorbit gcc 4.2.1 from -head before 13.0.

Relnotes: Yes

MFC r347196:

The build process generates assym.inc from genassym.o, so don't forget
to clean genassym.o

All genassym.sh usage need offset.inc

linux64: add arm64 linuxulator build details

The arm64 linuxulator needs different arguments for the objcopy
invocation used to build the linux VDSO. These arguments are both arch-
and OS-dependent

linux64: add arm64 linuxulator build details

The arm64 linuxulator needs different arguments for the objcopy
invocation used to build the linux VDSO. These arguments are both arch-
and OS-dependent, so I did not try to use some common setting for them.

Reviewed by: imp
Sponsored by: Turing Robotic Industries
Differential Revision: https://reviews.freebsd.org/D16011

show more ...

linux64: use linux output target for linux_vdso.so

linux_vdso.so provides the vdso for the linuxulator's amd64 target and
is mapped into a Linux binary's address space. Thus it should be a
Linux-st

linux64: use linux output target for linux_vdso.so

linux_vdso.so provides the vdso for the linuxulator's amd64 target and
is mapped into a Linux binary's address space. Thus it should be a
Linux-style .so, which has the ELF OS/ABI unset.

It turns out that ELF Tool Chain elfcopy/objcopy also has a bug where
the OS/ABI field is unset, regardless of the specified --output-target,
so this change is a no-op with the default in-tree toolchain. This is a
real fix when using external binutils, and the ELF Tool Chain bug will
be fixed in the future.

PR: 228934
Sponsored by: Turing Robotic Industries

show more ...

Move most of the contents of opt_compat.h to opt_global.h.

opt_compat.h is mentioned in nearly 180 files. In-progress network
driver compabibility improvements may add over 100 more so this is
close

Move most of the contents of opt_compat.h to opt_global.h.

opt_compat.h is mentioned in nearly 180 files. In-progress network
driver compabibility improvements may add over 100 more so this is
closer to "just about everywhere" than "only some files" per the
guidance in sys/conf/options.

Keep COMPAT_LINUX32 in opt_compat.h as it is confined to a subset of
sys/compat/linux/*.c. A fake _COMPAT_LINUX option ensure opt_compat.h
is created on all architectures.

Move COMPAT_LINUXKPI to opt_dontuse.h as it is only used to control the
set of compiled files.

Reviewed by: kib, cem, jhb, jtl
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14941

show more ...

Rename assym.s to assym.inc

assym is only to be included by other .s files, and should never
actually be assembled by itself.

Reviewed by: imp, bdrewery (earlier)
Sponsored by: The FreeBSD Foundati

Rename assym.s to assym.inc

assym is only to be included by other .s files, and should never
actually be assembled by itself.

Reviewed by: imp, bdrewery (earlier)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D14180

show more ...

Move assym.s to DPSRCS in linux modules

assym.s exists only to be included by other .s files, and should not
actually be assembled by itself.

Sponsored by: Turing Robotic Industries Inc.

Correct MD patch in linux64 module Makefile

Reviewed by: imp
Sponsored by: Turing Robotic Industries Inc.
Differential Revision: https://reviews.freebsd.org/D14061

Revert r319053 due to lack of sence. As pointed out by kib@ opt_global.h
contains such fundamental settings as e.g. SMP option and fake
opt_global.h almost never match real configured kernels.

Repor

Revert r319053 due to lack of sence. As pointed out by kib@ opt_global.h
contains such fundamental settings as e.g. SMP option and fake
opt_global.h almost never match real configured kernels.

Reported by: kib@

show more ...

On success, getrandom() Linux system call returns the number of bytes that
were copied to the buffer supplied by the user.

Also fix getrandom() if Linuxulator modules are built without the kernel.

On success, getrandom() Linux system call returns the number of bytes that
were copied to the buffer supplied by the user.

Also fix getrandom() if Linuxulator modules are built without the kernel.

PR: 219464
Submitted by: Maciej Pasternacki
Reported by: Maciej Pasternacki
MFC after: 1 week

show more ...

Strip _binary_linux_locore_o_size from ${VDSO}.so as it is a low absolute
symbol, and this breaks symbol lookup in ddb.

Requested by: bde@

MFC after: 1 week

sys/modules: normalize .CURDIR-relative paths to SRCTOP

This simplifies make output/logic

Tested with: `cd sys/modules; make ALL_MODULES=` on amd64
MFC after: 1 month
Sponsored by: Dell EMC Isilon

Exclude -flto when building *genassym.o

The build process generates *assym.h using nm from *genassym.o (which is
in turn created from *genassym.c).

When compiling with link-time optimization (LTO)

Exclude -flto when building *genassym.o

The build process generates *assym.h using nm from *genassym.o (which is
in turn created from *genassym.c).

When compiling with link-time optimization (LTO) using -flto, .o files
are LLVM bitcode, not ELF objects. This is not usable by genassym.sh,
so remove -flto from those ${CC} invocations.

Submitted by: George Rimar
Reviewed by: dim
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D9659

show more ...

Implement linux version of ptrace(2). It's nowhere near complete,
but it allows to use 64 bit linux strace(1) on 64 bit linux binaries.

Reviewed by: dchagin (earlier version)
MFC after: 2 weeks
Spo

Implement linux version of ptrace(2). It's nowhere near complete,
but it allows to use 64 bit linux strace(1) on 64 bit linux binaries.

Reviewed by: dchagin (earlier version)
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D9406

show more ...

opt_apic.h is only used on i386.

MFC after: 3 days
Sponsored by: EMC / Isilon Storage Division

pass -fPIC to the assembler, not linker

-fPIC has no effect on linking although it seems to be ignored by
GNU ld.bfd. However, it causes ld.lld to terminate with an invalid
argument error.

Reviewe

pass -fPIC to the assembler, not linker

-fPIC has no effect on linking although it seems to be ignored by
GNU ld.bfd. However, it causes ld.lld to terminate with an invalid
argument error.

Reviewed by: dchagin, kib
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D5444

show more ...

Remove unneeded includes of opt_kdtrace.h.

As of r258541, KDTRACE_HOOKS is defined in opt_global.h, so opt_kdtrace.h
is not needed when defining SDT(9) probes.

For objcopy, use --input-target and --output-target

When building with gcc 4.9 and binutils 2.25,
using '--input' and '--output' returns an error
message:
objcopy: option `--input' is ambiguous

For objcopy, use --input-target and --output-target

When building with gcc 4.9 and binutils 2.25,
using '--input' and '--output' returns an error
message:
objcopy: option `--input' is ambiguous

Reported by: Jenkins

show more ...

Implement epoll family system calls. This is a tiny wrapper
around kqueue() to implement epoll subset of functionality.
The kqueue user data are 32bit on i386 which is not enough for
epoll user data,

Implement epoll family system calls. This is a tiny wrapper
around kqueue() to implement epoll subset of functionality.
The kqueue user data are 32bit on i386 which is not enough for
epoll user data, so we keep user data in the proc emuldata.

Initial patch developed by rdivacky@ in 2007, then extended
by Yuri Victorovich @ r255672 and finished by me
in collaboration with mjg@ and jillies@.

Differential Revision: https://reviews.freebsd.org/D1092

show more ...

Add preliminary support for x86-64 Linux binaries.

Differential Revision: https://reviews.freebsd.org/D1076