powerpc: enable initial-exec TLS

Summary:
Use initial-exec, like other architectures.

While here, switch MACHINE_ARCH in lib/libc/Makefile to LIBC_ARCH and consistently use powerpc.

Subscribers: i

powerpc: enable initial-exec TLS

Summary:
Use initial-exec, like other architectures.

While here, switch MACHINE_ARCH in lib/libc/Makefile to LIBC_ARCH and consistently use powerpc.

Subscribers: imp, #contributor_reviews_base

Differential Revision: https://reviews.freebsd.org/D34315
Reviewed by: luporl
MFC after: 2 weeks

(cherry picked from commit 884ba43116d4456d5900d3c8824153c604f132b8)

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libc: Use the initial-exec TLS model

This permits more efficient accesses of thread-local variables, which
are heavily used at least by jemalloc and locale-aware code. Note that
on amd64 and i386,

libc: Use the initial-exec TLS model

This permits more efficient accesses of thread-local variables, which
are heavily used at least by jemalloc and locale-aware code. Note that
on amd64 and i386, jemalloc's thread-local variables already have their
TLS model overridden by defining JEMALLOC_TLS_MODEL.

For now the change is applied only to tested platforms, but should in
principle be enabled everywhere.

PR: 255840
Suggested by: jrtc27
Reviewed by: kib
Sponsored by: The FreeBSD Foundation

(cherry picked from commit 9c97062b620137a1f7cad4c6b3fb030a396b3266)

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libc: include rtld.h into static implementations of rtld interface

(cherry picked from commit 7f7489eba391a858b3930a34e7749d642b374c5c)

[PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le.

Given that we have converted to ELFv2 for BE already, endianness is the only
difference between the two ARCHs.

As such, there is no need to dif

[PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le.

Given that we have converted to ELFv2 for BE already, endianness is the only
difference between the two ARCHs.

As such, there is no need to differentiate LIBC_ARCH between the two.

Combining them like this lets us avoid needing to have two copies of several
bits for no good reason.

Sponsored by: Tag1 Consulting, Inc.

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Revert that!

Oops missed Makefile.config

Remove sparc64 specific parts of libc.

Also update comments for which architectures use 128 bit long doubles,
as appropriate.

The softfloat specialization routines weren't updated since they
appear

Remove sparc64 specific parts of libc.

Also update comments for which architectures use 128 bit long doubles,
as appropriate.

The softfloat specialization routines weren't updated since they
appear to be from an upstream source which we may want to update in
the future to get a more favorable license.

Reviewed by: emaste@
Differential Revision: https://reviews.freebsd.org/D23658

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libssp_nonshared: use only on i386 and ppc

libssp_nonshared.a defines one symbol, __stack_chk_fail_local. This
is used only on i386 and powerpc; other archs emit calls directly to
__stack_chk_fail.

libssp_nonshared: use only on i386 and ppc

libssp_nonshared.a defines one symbol, __stack_chk_fail_local. This
is used only on i386 and powerpc; other archs emit calls directly to
__stack_chk_fail. Simplify linking on other archs by omitting it.

PR: 242941 [exp-run]

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revert r341429 "disable BIND_NOW in libc, libthr, and rtld"

r345620 by kib@ fixed the rtld issue that caused a crash at startup
during resolution of libc's ifuncs with BIND_NOW.

PR: 233333
Sponsor

revert r341429 "disable BIND_NOW in libc, libthr, and rtld"

r345620 by kib@ fixed the rtld issue that caused a crash at startup
during resolution of libc's ifuncs with BIND_NOW.

PR: 233333
Sponsored by: The FreeBSD Foundation

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Unify i386 and amd64 getcontextx.c, and use ifuncs while there.

In particular, use ifuncs for __getcontextx_size(), also calculate the
size of the extended save area in resolver. Same for __fillcon

Unify i386 and amd64 getcontextx.c, and use ifuncs while there.

In particular, use ifuncs for __getcontextx_size(), also calculate the
size of the extended save area in resolver. Same for __fillcontextx2().

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

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disable BIND_NOW in libc, libthr, and rtld

An issue remains with BIND_NOW and processes using threads. For now,
restore libc's BIND_NOW disable, and also disable BIND_NOW in rtld and
libthr.

A pat

disable BIND_NOW in libc, libthr, and rtld

An issue remains with BIND_NOW and processes using threads. For now,
restore libc's BIND_NOW disable, and also disable BIND_NOW in rtld and
libthr.

A patch is in review (D18400) that likely fixes this issue, but just
disable BIND_NOW pending further testing after it is committed.

PR: 233333
Sponsored by: The FreeBSD Foundation

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revert r340640 "libc: forcibly disable BIND_NOW"

When immediate bind mode is requested, as of r340675 rtld processes
irelocs in PLT immediately after other PLT relocs. That addresses the
libc + BIN

revert r340640 "libc: forcibly disable BIND_NOW"

When immediate bind mode is requested, as of r340675 rtld processes
irelocs in PLT immediately after other PLT relocs. That addresses the
libc + BIND_NOW startup crash the workaround is no longer needed.

PR: 233333

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libc: forcibly disable BIND_NOW

Building libc WITH_BIND_NOW results in segfault at process start. For
now force BIND_NOW off until the root cause can be identified and fixed.

PR: 233333
Sponsored

libc: forcibly disable BIND_NOW

Building libc WITH_BIND_NOW results in segfault at process start. For
now force BIND_NOW off until the root cause can be identified and fixed.

PR: 233333
Sponsored by: The FreeBSD Foundation

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Move libc linker ifunc test to build target only

Targets like 'cleandir' must not depend on toolchain capabilities.

Reported by: delphij, Shawn Webb
Approved by: re (kib)
Sponsored by: The FreeBSD

Move libc linker ifunc test to build target only

Targets like 'cleandir' must not depend on toolchain capabilities.

Reported by: delphij, Shawn Webb
Approved by: re (kib)
Sponsored by: The FreeBSD Foundation

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libc: require ifunc-capable linker for amd64/i386

We expect to introduce optimized libc routines in the near future,
which requires use of a linker that supports ifuncs.

Approved by: re (gjb, kib)

libc: require ifunc-capable linker for amd64/i386

We expect to introduce optimized libc routines in the near future,
which requires use of a linker that supports ifuncs.

Approved by: re (gjb, kib)
Sponsored by: The FreeBSD Foundation

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Strip __RCSID() and __SCCSID() strings by default when building libc.

This is in preparation for changes to update the various ID strings in
libc's source. CSRG ID strings will use __SCCSID() and t

Strip __RCSID() and __SCCSID() strings by default when building libc.

This is in preparation for changes to update the various ID strings in
libc's source. CSRG ID strings will use __SCCSID() and there are some
existing uses of __RCSID() for NetBSD ID strings already. These are
generally under either an explicit #if 0 or an #ifdef LIBC_SCCS so are
off by default and this change preserves that existing behavior.

Differential Revision: https://reviews.freebsd.org/D15830

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Now that a special no-SSP libc is used for rtld, allow
-fstack-protector-all for normal libc builds.

Submitted by: Luis Pires
Reviewed by: brooks
Differential revision: https://reviews.freebsd.org/D

Now that a special no-SSP libc is used for rtld, allow
-fstack-protector-all for normal libc builds.

Submitted by: Luis Pires
Reviewed by: brooks
Differential revision: https://reviews.freebsd.org/D15340

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Created static libc PIC/no-SSP library to be used by rtld.

Rtld is not compatible with SSP, and since we link libc_pic.a to rtld
to have the basic support like memory and string copy functions, we
h

Created static libc PIC/no-SSP library to be used by rtld.

Rtld is not compatible with SSP, and since we link libc_pic.a to rtld
to have the basic support like memory and string copy functions, we
have to both carefully limit libc use, and to provide the ssp support
shims. This change makes the libc use in rtld more straighforward but
still limited, and allows to remove the shims, to be done in the next
commit.

Submitted by: Luis Pires
Reviewed by: bdrewery, brooks
Differential revision: https://reviews.freebsd.org/D15283

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Support armv7 builds for userland

Make armv7 as a new MACHINE_ARCH.

Copy all the places we do armv6 and add armv7 as basically an
alias. clang appears to generate code for armv7 by default. armv7 h

Support armv7 builds for userland

Make armv7 as a new MACHINE_ARCH.

Copy all the places we do armv6 and add armv7 as basically an
alias. clang appears to generate code for armv7 by default. armv7 hard
float isn't supported by the the in-tree gcc, so it hasn't been
updated to have a new default.

Support armv7 as a new valid MACHINE_ARCH (and by extension
TARGET_ARCH).

Add armv7 to the universe build.

Differential Revision: https://reviews.freebsd.org/D12010

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Add HAS_TESTS to all Makefiles that are currently using the
`SUBDIR.${MK_TESTS}+= tests` idiom.

This is a follow up to r321912.

Convert traditional ${MK_TESTS} conditional idiom for including test
directories to SUBDIR.${MK_TESTS} idiom

This is being done to pave the way for future work (and homogenity) in
^/projects/make-ch

Convert traditional ${MK_TESTS} conditional idiom for including test
directories to SUBDIR.${MK_TESTS} idiom

This is being done to pave the way for future work (and homogenity) in
^/projects/make-check-sandbox .

No functional change intended.

MFC after: 1 weeks

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Replace dot-dot relative pathing with SRCTOP-relative paths where possible

This reduces build output, need for recalculating paths, and makes it clearer
which paths are relative to what areas in the

Replace dot-dot relative pathing with SRCTOP-relative paths where possible

This reduces build output, need for recalculating paths, and makes it clearer
which paths are relative to what areas in the source tree. The change in
performance over a locally mounted UFS filesystem was negligible in my testing,
but this may more positively impact other filesystems like NFS.

LIBC_SRCTOP was left alone so Juniper (and other users) can continue to
manipulate lib/libc/Makefile (and other Makefile.inc's under lib/libc) as
include Makefiles with custom options.

Discussed with: marcel, sjg
MFC after: 1 week
Reviewed by: emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D9207

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Add full softfloat and hardfloat support for RISC-V.

Hardfloat is now default (use riscv64sf as TARGET_ARCH
for softfloat).

Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.

Add full softfloat and hardfloat support for RISC-V.

Hardfloat is now default (use riscv64sf as TARGET_ARCH
for softfloat).

Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8529

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Add full softfloat and hardfloat support for MIPS.

This adds new target architectures for hardfloat:
mipselhf mipshf mips64elhf mips64hf.

Tested in QEMU only.

Sponsored by: DARPA, AFRL
Sponsored b

Add full softfloat and hardfloat support for MIPS.

This adds new target architectures for hardfloat:
mipselhf mipshf mips64elhf mips64hf.

Tested in QEMU only.

Sponsored by: DARPA, AFRL
Sponsored by: HEIF5
Differential Revision: https://reviews.freebsd.org/D8376

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Add different libc ldscript: the one without libssp --
we don't have it when MK_SSP==no.

This fixes compilation on MIPS.

Reviewed by: imp
Sponsored by: DARPA, AFRL
Sponsored by: HEIF5
Differential

Add different libc ldscript: the one without libssp --
we don't have it when MK_SSP==no.

This fixes compilation on MIPS.

Reviewed by: imp
Sponsored by: DARPA, AFRL
Sponsored by: HEIF5
Differential Revision: https://reviews.freebsd.org/D8212

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