This reapplies the RISC-V GNU ld workaround from r354896, r354899, and
354900, along with a fix for the build failure during cleandir.
LINKER_TYPE was not being set during cleandir, resulting in
Malformed conditional (${LINKER_TYPE} == "bfd" && ${MACHINE} == "riscv")
from Cirrus-CI.
PR: 242109
Sponsored by: The FreeBSD Foundation
unifdef(1): Improve worst-case bound on symbol resolution
Use RB_TREE to make some algorithms O(lg N) and O(N lg N) instead of O(N)
and O(N^2).
While here, remove arbitrarily limit on number of macros understood.
Reverts r354877 and r354878, which disabled the (correct) test.
PR: 242095
Reported by: lwhsu
Summary: A follow-on to r276634, which added the VMX note to userland cores,
and r334538 for VSX notes.
Copied from note_type_linux_core().
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D22404
Summary:
The ?: operator has a lower precedence than == and &&, so the result will always
be recorded as true. Found by gcc8.
Reviewed by: ngie, ae
Differential Revision: https://reviews.freebsd.org/D22427
Co-mingling two things here:
* Addressing some feedback from Konstantin and Kyle re: jail,
capability mode, and a few other things
* Adding audit support as promised.
The audit support change includes a partial refresh of OpenBSM from
upstream, where the change to add shm_rename has already been
accepted. Matthew doesn't plan to work on refreshing anything else to
support audit for those new event types.
Submitted by: Matthew Bryan <matthew.bryan@isilon.com>
Reviewed by: kib
Relnotes: Yes
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D22083
Apply vendor fixes:
06de62c Detect multiplication overflow when computing sector position
46a8443 Limit the number of elements in a vector (found by oss-fuzz)
Requested by: wen
MFC after: 3 days
Security: CVE-2019-18218
[InstCombine] Disable some portions of foldGEPICmp for GEPs that
return a vector of pointers. Fix other portions.
llvm-svn: 370114
This should fix instances of 'Assertion failed: (isa<X>(Val) &&
"cast<Ty>() argument of incompatible type!"), function cast, file
/usr/src/contrib/llvm/include/llvm/Support/Casting.h, line 255', when
building openjdk8 for aarch64 and armv7.
Reported by: jbeich
PR: 236566
MFC after: 3 days
/proc/curproc/file and the KERN_PROC_PATHNAME sysctl may not return the
desired path if there are multiple hardlinks to the file.
PR: 241932
Tested by: ler
Sponsored by: The FreeBSD Foundation
[libc++] Harden usage of static_assert against C++03
In C++03, we emulate static_assert with a macro, and we must
parenthesize multiple arguments.
llvm-svn: 373328
This is a follow-up to r354460, which causes errors for pre-C++11
programs using <cmath>, similar to:
/usr/include/c++/v1/cmath:622:68: error: too many arguments provided to
function-like macro invocation
Reported by: antoine
MFC after: immediately (because of ports breakage)
Object files may specify insufficient alignment on certain sections, for
example due to a bug in NASM[1]. When we detect that case in elfcopy or
strip, emit a warning and increase the alignment to the minimum
required.
The NASM bug was fixed in 2015[2], but we might as well have this fixup
(and warning) in elfcopy in case we encounter such a file for any other
reason.
This might be reworked somewhat upstream - see ELF Tool Chain
ticket 485[3].
[1] https://bugzilla.nasm.us/show_bug.cgi?id=3392307
[2] 1f0cb0f2c1
[3] https://sourceforge.net/p/elftoolchain/tickets/485/
PR: 198611
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D2292
[RISCV] Add Custom Parser for Atomic Memory Operands
Summary:
GCC Accepts both (reg) and 0(reg) for atomic instruction memory
operands. These instructions do not allow for an offset in their
encoding, so in the latter case, the 0 is silently dropped.
Due to how we have structured the RISCVAsmParser, the easiest way to
add support for parsing this offset is to add a custom AsmOperand and
parser. This parser drops all the parens, and just keeps the
register.
This commit also adds a custom printer for these operands, which
matches the GCC canonical printer, printing both `(a0)` and `0(a0)`
as `(a0)`.
Reviewers: asb, lewis-revill
Reviewed By: asb
Subscribers: s.egerton, hiraditya, rbar, johnrusso, simoncook,
apazos, sabuasal, niosHD, kito-cheng, shiva0217, jrtc27, MaskRay,
zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o,
rkruppe, jfb, PkmX, jocewei, psnobl, benna, Jim, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D65205
llvm-svn: 367553
Merge commit f596f4507 from llvm git (by Sam Elliott):
[RISCV] Add FreeBSD targets
Reviewers: asb
Reviewed By: asb
Subscribers: simoncook, s.egerton, lenary, psnobl, benna, mhorne,
emaste, kito-cheng, shiva0217, rogfer01, rkruppe, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D57795
Patch by James Clarke (jrtc27)
llvm-svn: 367557
Merge commit f596f4507 from llvm git (by Hsiangkai Wang):
[DebugInfo] Generate fixups as emitting DWARF .debug_frame/.eh_frame.
It is necessary to generate fixups in .debug_frame or .eh_frame as
relaxation is enabled due to the address delta may be changed after
relaxation.
There is an opcode with 6-bits data in debug frame encoding. So, we
also need 6-bits fixup types.
Differential Revision: https://reviews.llvm.org/D58335
llvm-svn: 366524
Merge commit f596f4507 from llvm git (by Hsiangkai Wang):
[DebugInfo] Some fields do not need relocations even relax is enabled.
In debug frame information, some fields, e.g., Length in CIE/FDE and
Offset in FDE are attributes to describe the structure of CIE/FDE.
They are not related to the relaxed code. However, these attributes
are symbol differences. So, in current design, these attributes will
be filled as zero and LLVM generates relocations for them.
We only need to generate relocations for symbols in executable
sections. So, if the symbols are not located in executable sections,
we still evaluate their values under relaxation.
Differential Revision: https://reviews.llvm.org/D61584
llvm-svn: 366531
Merge commit f596f4507 from llvm git (by Alex Bradbury):
[RISCV] Don't force absolute FK_Data_X fixups to relocs
The current behavior of shouldForceRelocation forces relocations for
the majority of fixups when relaxation is enabled. This makes sense
for fixups which incorporate symbols but is unnecessary for simple
data fixups where the fixup target is already resolved to an absolute
value.
Differential Revision: https://reviews.llvm.org/D63404
Patch by Edward Jones.
llvm-svn: 369257
Merge commit f596f4507 from llvm git (by Alex Bradbury):
[RISCV] Implement getExprForFDESymbol to ensure RISCV_32_PCREL is
used for the FDE location
Follow binutils in using RISCV_32_PCREL for the FDE initial location.
As explained in the relevant binutils commit
<a6cbf936e3>,
the ADD/SUB pair of relocations is problematic in the presence of
linker relaxation.
This patch has the same end goal as D64715 but includes test changes
and avoids adding a new global VariantKind to MCExpr.h (preferring
RISCVMCExpr VKs like the rest of the RISC-V backend).
Differential Revision: https://reviews.llvm.org/D66419
llvm-svn: 369375
This series of merges will permit riscv64 kernels and riscv64sf worlds
to build with clang instead of gcc (but still using the bfd linker).
Requested by: jhb
Obtained from: https://github.com/freebsd/freebsd/compare/master...bsdjhb:riscv_clang
MFC after: 1 month
X-MFC-With: r353358
[libc++] Add `__truncating_cast` for safely casting float types to
integers
This is needed anytime we need to clamp an arbitrary floating point
value to an integer type.
Thanks to Eric Fiselier for the patch.
Differential Revision: https://reviews.llvm.org/D66836
llvm-svn: 370891
Merge commit b92deded8 from llvm git (by Louis Dionne):
[libc++] Move __clamp_to_integral to <cmath>, and harden against
min()/max() macros
llvm-svn: 370900
Merge commit 0ec6a4882 from llvm git (by Louis Dionne):
[libc++] Fix potential OOB in poisson_distribution
See details in the original Chromium bug report:
https://bugs.chromium.org/p/chromium/issues/detail?id=994957
Together, these fix a security issue in libc++'s implementation of
std::poisson_distribution, which can be exploited to read data which is
out of bounds.
Note there are no programs in the FreeBSD base system that use
std::poisson_distribution, so this is only a possible issue for ports
and external programs which have been built against libc++. Therefore,
I am bumping __FreeBSD_version for the benefit of our port maintainers.
Requested by: emaste
Security: potential OOB read
MFC after: 3 days
[x86] avoid crashing when splitting AVX stores with non-simple type
(PR43916)
The store splitting transform was assuming a simple type (MVT), but
that's not necessarily the case as shown in the test.
This should fix 'Assertion failed: (isSimple() && "Expected a
SimpleValueType!")' when building the security/openssl111 port targeting
a CPU that supports AVX, but not AVX2, such as sandybridge.
PR: 241747
MFC after: 1 month
X-MFC-With: r353358
- move from "oxtradoc" to RST/Sphinx documentation
- new "csv" encoder, which allows path and leaf lists
- address warnings from PVS-Stdio tool
- add "xolint" detected errors to the documentation
There doesn't seem to be much sense in defaulting "on" unwind tables on
amd64 and not on other arches. It causes surprising differences between
platforms, such as the PR below.
Prior to this change, FreeBSD inherited the default implementation of the
method from the Gnu.h Generic_Elf => Generic_GCC parent class, which
returned true only for amd64 targets. Override that and opt on always,
similar to, e.g., NetBSD.
PR: 241562
Reported by: lwhsu
Reviewed by: dim
Discussed with: emaste
MFC after: I'm not going to, but you should feel free
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D22252
GCC's libgcc exports a few ARM-specific symbols for ARM EABI, AEABI, or
EHABI or whatever it's called. Export the same ones from LLVM-libunwind's
libgcc_s, on ARM. As part of this, convert libgcc_s from a direct
Version.map to one constructed from component Symbol.map files. This allows
the ARM-specific Symbol.map to be included only on ARM.
Fix ARM-only oddities in struct name/aliases in LLVM-libunwind to match
non-ARM definitions and ARM-specific expectations in libcxxrt /
libcompiler_rt.
No functional change intended for non-ARM architectures.
This commit does not actually flip the switch for ARM defaults from libgcc
to llvm-libunwind, but makes it possible (to compile, anyway).
[PowerPC] Do not emit HW loop if the body contains calls to
lrint/lround
These two intrinsics are lowered to calls so should prevent the
formation of CTR loops. In a subsequent patch, we will handle all
currently known intrinsics and prevent the formation of HW loops if
any unknown intrinsics are encountered.
Differential revision: https://reviews.llvm.org/D68841
This should fix an "invalid CRT loop" assertion when building the
www/node port for powerpc64.
Requested by: Alfredo Dal'Ava Júnior <alfredo.junior@eldorado.org.br>
MFC after: 1 month
X-MFC-With: r353358
Current implementation of ppcfbsd_pc_in_sigtramp() seems to take only 32-bit
PowerPC in account, as on 64-bit PowerPC most kernel instruction addresses will
be wrongly reported as in sigtramp.
This change adds proper sigtramp detection for PPC64.
Reviewed by: jhibbits
Differential Revision: https://reviews.freebsd.org/D22199
It turns out that a test of backtrace symbol resolution and formatting
requires symbols. Another option mightt be building with -rdynamic instead,
but this works for now.
Re-enabled skipped CI test, as it should now pass.
PR: 241562
Submitted by: lwhsu
Reported by: lwhsu
X-MFC-With: r354126, r354135, r354144
Revert rL349624 : Let TableGen write output only if it changed,
instead of doing so in cmake, attempt 2
Differential Revision: https://reviews.llvm.org/D55842
-----------------
As discussed on PR43385 this is causing Visual Studio msbuilds to
perpetually rebuild all tablegen generated files
Pull in r373664 from upstream llvm trunk (by Nico Weber):
Reland r349624: Let TableGen write output only if it changed, instead
of doing so in cmake
Move the write-if-changed logic behind a flag and don't pass it with
the MSVC generator. msbuild doesn't have a restat optimization, so
not doing write-if-change there doesn't have a cost, and it should
fix whatever causes PR43385.
This should fix the scenario where an incremental build from before
r353358 (the clang 9.0.0 upgrade) to r353358 or later fails to update
the timestamp of the generated lib/clang/headers/arm_fp16.h header.
After such a build, installing world from read-only source and object
directories would attempt to generate the header again, leading to
"clang-tblgen: error opening arm_fp16.h.d:Read-only file system".
Reported by: avg, np
PR: 241402
MFC after: 1 month
X-MFC-With: r353358
The bogus requirement was causing CI infrastructure (which does not mount
procfs) to skip the test. Procfs has not been needed by libexecinfo on
FreeBSD (nor NetBSD) for years. Both now use a sysctl to obtain the path to
the current process image.
X-MFC-With: r354126
Drop portions that are unlit or redundant with llvm-libunwind: builtin.c,
unwind.h, and unwind_arm_ehabi_stub.c.
This code should now work with -fPIE binaries, should we choose to build any
that way.
When backtrace() array is full, signal an error so the underlying
Itanium-style C++ exception handling library (llvm-libunwind) knows to stop
tracing instead of continuing. (It should stop on its own when it finishes
unwinding, so this is mostly an extra seatbelt against an infinite loop bug
in the unwinder.)
[ARM] VFPv2 only supports 16 D registers.
r361845 changed the way we handle "D16" vs. "D32" targets; there used
to be a negative "d16" which removed instructions from the
instruction set, and now there's a "d32" feature which adds
instructions to the instruction set. This is good, but there was an
oversight in the implementation: the behavior of VFPv2 was changed.
In particular, the "vfp2" feature was changed to imply "d32". This is
wrong: VFPv2 only supports 16 D registers.
In practice, this means if you specify -mfpu=vfpv2, the compiler will
generate illegal instructions.
This patch gets rid of "vfp2d16" and "vfp2d16sp", and fixes "vfp2"
and "vfp2sp" so they don't imply "d32".
Differential Revision: https://reviews.llvm.org/D67375
Pull in r372187 from upstream clang trunk (by Eli Friedman):
[ARM] Update clang for removal of vfp2d16 and vfp2d16sp
Matching fix for https://reviews.llvm.org/D67375 (r372186).
Differential Revision: https://reviews.llvm.org/D67467
This should fix clang generating invalid opcodes for floating point
operations on armv6.
Requested by: mmel
MFC after: 3 days
The MIPS bug was introduced by upstream commit 7403cb630, which failed
to account for the additional indirection introduced and also dropped
one of the checks; change it to the standard "NULL-or-empty" check as
used elsewhere in BFD, which is also what upstream now has.
Submitted by: James Clarke <jrtc27@jrtc27.com>
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D21911
i686, as per the discussion on the freebsd-arch mailing list. Earlier
in r352030, I had already bumped it to i586, to work around missing
atomic 64 bit functions for the i386 architecture.
Relnotes: yes
GCC compilers set __FreeBSD__ statically to a build-time determined
targeted version (which in ports always matches the build host's
version). This means that when building any version (12 or 13, etc.)
of riscv or some other architecture via GCC on a 12.x host,
__FreeBSD__ will always be set to 12. As a result, __FreeBSD__ cannot
be used to reliably detect the target FreeBSD version being built.
Instead, __FreeBSD_version from either <sys/param.h> (in the kernel)
or <osreldate.h> (in userland) should be used.
This changes the gets() test in libc++ to use __FreeBSD_version from
<osreldate.h>.
Reported by: jenkins (riscv64 and amd64-gcc)
Reviewed by: dim, imp
Differential Revision: https://reviews.freebsd.org/D22034
Fix process launch failure on FreeBSD after r365761
Summary:
After rLLDB365761, and with `LLVM_ENABLE_ABI_BREAKING_CHECKS`
enabled, launching any process on FreeBSD crashes lldb with:
```
Expected<T> must be checked before access or destruction.
Expected<T> value was in success state. (Note: Expected<T> values in
success mode must still be checked prior to being destroyed).
```
This is because `m_operation_thread` and `m_monitor_thread` were
wrapped in `llvm::Expected<>`, but this requires the objects to be
correctly initialized before accessing them.
To fix the crashes, use `llvm::Optional<>` for the members (as
indicated by labath), and use local variables to store the return
values of `LaunchThread` and `StartMonitoringChildProcess`. Then,
only assign to the member variables after checking if the return
values indicated success.
Reviewers: devnexen, emaste, MaskRay, mgorny
Reviewed By: devnexen
Subscribers: jfb, labath, krytarowski, lldb-commits
Differential Revision: https://reviews.llvm.org/D68723
PR: 241137
MFC after: 1 month
X-MFC-With: r353358
Put in a band-aid fix for lldb 9 exiting with "Expected<T> must be
checked before access or destruction" when launching executables, while
we sort this out with upstream.
PR: 241137
MFC after: 1 month
X-MFC-With: r353358
checked before access or destruction" when launching executables, while
we sort this out with upstream.
Reported by: jbeich
PR: 241137
MFC after: 1 month
X-MFC-With: r353358
This warning (comparing a pointer against a zero character literal
rather than NULL) has existed since GCC 7.1.0, and was recently added to
Clang trunk.
Almost all of these are harmless, except for fwcontrol's str2node, which
needs to both guard against dereferencing a NULL pointer (though in
practice it appears none of the callers will ever pass one in), as well
as ensure it doesn't parse the empty string as node 0 due to strtol's
awkward interface.
Submitted by: James Clarke <jtrc27@jrtc27.com>
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D21914
[X86] Check MI.isConvertibleTo3Addr() before calling
convertToThreeAddress in X86FixupLEAs.
X86FixupLEAs just assumes convertToThreeAddress will return nullptr
for any instruction that isn't convertible.
But the code in convertToThreeAddress for X86 assumes that any
instruction coming in has at least 2 operands and that the second one
is a register. But those properties aren't guaranteed of all
instructions. We should check the instruction property first.
Pull in r365720 from upstream llvm trunk (by Craig Topper):
[X86] Don't convert 8 or 16 bit ADDs to LEAs on Atom in FixupLEAPass.
We use the functions that convert to three address to do the
conversion, but changing an 8 or 16 bit will cause it to create a
virtual register. This can't be done after register allocation where
this pass runs.
I've switched the pass completely to a white list of instructions
that can be converted to LEA instead of a blacklist that was
incorrect. This will avoid surprises if we enhance the three address
conversion function to include additional instructions in the future.
Fixes PR42565.
This should fix assertions/segfaults when compiling certain ports with
CPUTYPE=atom.
PR: 240928
MFC after: 3 days
Calculate binary file offset using address field, bacause software know only offset to known data, not where to load segment.
With that patch, kernel .data section can have any alignment/offset - kernel boor fine.
PR: 235391
Reviewed by: markj
MFC after: 1 month
Differential Revision: D21827
The value of struct_kernel_stat64_sz introduced by review D5021 for
RISC-V was incorrect.
Also add a __riscv_xlen == 64 conditional as the 32-bit ABI is not yet
finalized.
Submitted by: Luís Marques
Differential Revision: https://reviews.freebsd.org/D21684
from the command line. Prior to this the functionality was mostly there
however since the pool type (-t) was not recognized by the -A and -R
command options -- not recognized by getopt(). Additionally the code to
implement the dynamic add and removal of pools didn't work.
When dynamically adding (-A) a pool a type (-t) to specify if the pool
is a tree or hash pool must be specified. When dynamically removing (-R)
a pool, omitting -t will cause a search-and-destroy which will remove
both types of pools matching the name given (-m).
PR: 218433
MFC after: 1 week
conflicts with the command option of the same name (also -R).
Remove the superfluous and confusing non-global non-command -R option.
PR: 218433
MFC after: 1 week
Only a role of "ipf" is currentlysupported as the other documented
(and undocumented) roles are #ifdef'd out.
The plan is to complete ippool(8) as it is even in its current state
a powerful feature/tool.
PR: 218433
MFC after: 1 month
Summary: When powerpc64 switches to LLVM, use this patch to enable
OpenMP as well. OpenMP on PPC is only for 64-bits, so don't make a
32-bit libomp. A change to openmp files is necesssary (under review on
https://reviews.llvm.org/D67190), because it determines ELF format
version based on endianness, which is incorrect.
Reviewed by: alfredo.junior_eldorado.org.br, #manpages
Differential Revision: https://reviews.freebsd.org/D21532
Sync libarchive with vendor.
Relevant vendor changes:
Issue #1237: Fix integer overflow in archive_read_support_filter_lz4.c
PR #1249: Correct some typographical and grammatical errors.
PR #1250: Minor corrections to the formatting of manual pages
MFC after: 1 week
Relevant vendor changes:
Issue #1237: Fix integer overflow in archive_read_support_filter_lz4.c
PR #1249: Correct some typographical and grammatical errors.
PR #1250: Minor corrections to the formatting of manual pages
When an empty pattern is encountered in the pattern list, I had previously
broken bsdgrep to count that as a "match all" and ignore any other patterns
in the list. This commit rectifies that mistake, among others:
- The -v flag semantics were not quite right; lines matched should have been
counted differently based on whether the -v flag was set or not. procline
now definitively returns whether it's matched or not, and interpreting
that result has been kicked up a level.
- Empty patterns with the -x flag was broken similarly to empty patterns
with the -w flag. The former is a whole-line match and should be more
strict, only matching blank lines. No -x and no -w will will match the
empty string at the beginning of each line.
- The exit code with -L was broken, w.r.t. modern grep. Modern grap will
exit(0) if any file that didn't match was output, so our interpretation
was simply backwards. The new interpretation makes sense to me.
Tests updated and added to try and catch some of this.
This misbehavior was found by autoconf while fixing ports found in PR 229925
expecting either a more sane or a more GNU-like sed.
MFC after: 1 week
[x86] fix assert with horizontal math + broadcast of vector (PR43402)
https://bugs.llvm.org/show_bug.cgi?id=43402
This should fix 'Assertion failed: ((HOp.getValueType() == MVT::v2f64 ||
HOp.getValueType() == MVT::v4f64) && HOp.getValueType() == VT &&
"Unexpected type for h-op"), function foldShuffleOfHorizOp, file
contrib/llvm/lib/Target/X86/X86ISelLowering.cpp, line 33661' when
building the devel/llvm90 port with CPUTYPE=haswell.
PR: 240759
[mips] Deduce MIPS specific ELF header flags from `emulation`
In case of linking binary blobs which do not have any ELF headers, we
can deduce MIPS ABI ELF header flags from an `emulation` option.
Patch by Kyle Evans.
Requested by: kevans :)
When evaluating a __builtin_constant_p conditional, always enter
constant-folding mode regardless of the original evaluation mode.
In order for this to be correct, we need to track whether we're
checking for a potential constant expression or checking for
undefined behavior separately from the evaluation mode enum, since we
don't want to clobber those states when entering constant-folding
mode.
This should fix "ld: error: undefined symbol: ix86_isa_flags" (and many
other symbol names) during the initial stages of the lang/gcc* ports.
The issue was that without optimization, the __builtin_constant_p()
expressions generated in gencondmd.c would emit references to global
variables that were undefined, such as ix86_isa_flags.
PR: 240629
Unfortunately though the original tarball supports this in ./configure
(for Linux), to fully support disabling of mlockall() by default requires
a little extra help otherwise the following is logged in syslog:
Cannot set RLIMIT_MEMLOCK: Operation not permitted
MFC after: 2 weeks
X-MFC with: r352304
Add -m(no)-spe to clang
Summary:
r337347 added support for the Signal Processing Engine (SPE) to LLVM.
This follows that up with the clang side.
This adds -mspe and -mno-spe, to match GCC.
Subscribers: nemanjai, kbarton, cfe-commits
Differential Revision: https://reviews.llvm.org/D49754
Instead, pull in r371324 from upstream libc++ trunk (by me):
Remove ::gets for FreeBSD 13 and later
Summary:
In https://svnweb.freebsd.org/changeset/base/351659 @emaste removed
gets() from FreeBSD 13's libc, and our copies of libc++ and
libstdc++. In that change, the declarations were simply deleted, but
I would like to propose this conditional test instead.
Reviewers: EricWF, mclow.lists, emaste
Reviewed By: mclow.lists
Subscribers: krytarowski, christof, ldionne, emaste, libcxx-commits
Differential Revision: https://reviews.llvm.org/D67316
This makes these changes more MFCable.
On arm and arm64, where chars are unsigned by default, buildworld dies
with:
--- terminal.o ---
/usr/src/contrib/libedit/terminal.c:569:41: error: comparison of
integers of different signs: 'wint_t' (aka 'int') and 'wchar_t' (aka
'unsigned int') [-Werror,-Wsign-compare]
el->el_cursor.v][where & 0370] !=
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
/usr/src/contrib/libedit/terminal.c:659:28: error: comparison of
integers of different signs: 'wint_t' (aka 'int') and 'wchar_t' (aka
'unsigned int') [-Werror,-Wsign-compare]
[el->el_cursor.h] == MB_FILL_CHAR)
~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~
Fix this by making MB_FILL_CHAR a wint_t, so no casting is needed.
Note that in https://reviews.freebsd.org/D21584 this was also proposed
by Yuichiro Naito <naito.yuichiro_gmail.com>.
Reviewed by: bapt
Subscribers: naito.yuichiro_gmail.com, ml_vishwin.info
MFC after: 3 weeks
X-MFC-With: r352275
Differential Revision: https://reviews.freebsd.org/D21657
leading to hundreds of lines of fairly unreadable error messages.
I don't think we particularly care about the specific source file gcc
dies on, and the many layers of macros and sub-types in googletest make
it very hard to diagnose whether this is a bug in googletest, gcc, clang
or libc++.
Re-commit r357452 (take 3): "SimplifyCFG
SinkCommonCodeFromPredecessors: Also sink function calls without used
results (PR41259)"
Third time's the charm.
This was reverted in r363220 due to being suspected of an internal
benchmark regression and a test failure, none of which turned out to
be caused by this.
As reported in https://bugs.llvm.org/show_bug.cgi?id=43269, this causes
UNREACHABLE errors when compiling if_malo_pci.c for arm and aarch64.
in various declarations.
Otherwise, depending on how unwind-arm.h is included from other source
files, the compiler may complain that uint32_t and uint64_t are unknown
types.
MFC after: 3 days
This only lists the changed type and not other attributes so that it
matches the behavior of -C as done in r66747 for fmtree. The NetBSD
-ff implementation was copied from fmtree.
Reviewed by: imp
MFC after: 2 weeks
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D21623
This function is not needed anymore, it allows old sh binary to continue
to run and avoid breaking backward compatibility.
Note that is now just calls the regular _el_fn_complete which does a proper
job at quoting.
Discussed with: jilles
Compared to current version in base:
- great improvements on the Unicode support
- full support for filename completion including quoting
which means we do not need anymore our custom addition)
- Improved readline compatiblity
Upgrading libedit has been a pain in the past, because somehow we never
managed to properly cleanup the tree in lib/libedit and each merge has always
been very painful. After years of fighting give up and refresh a merge from
scrarch properly in contrib.
Note that the switch to this version will be done in another commit.
change https://reviews.llvm.org/rL356631 ("[X86] Add CMPXCHG8B feature
flag. Set it for all CPUs except i386/i486 including 'generic'. Disable
use of CMPXCHG8B when this flag isn't set"), clang now correctly emits
calls to __atomic_load_8, __atomic_store_8, etc. when targeting i486,
and this means we can no longer link most modern programs, because we do
not have a libatomic, nor support for atomic functions in libc. See
also PR 230888, 220822, 233725, 234976, and more probably duplicates.
Note that in practice, clang has been incorrectly generating cmpxchg8b
instructions for years now, when targeting i486. So de facto nothing
really changes by doing this.
[PPC32] Emit R_PPC_GOT_TPREL16 instead R_PPC_GOT_TPREL16_LO
Unlike ppc64, which has ADDISgotTprelHA+LDgotTprelL pairs, ppc32 just
uses LDgotTprelL32, so it does not make lots of sense to use _LO
without a paired _HA.
Emit R_PPC_GOT_TPREL16 instead R_PPC_GOT_TPREL16_LO to match GCC, and
get better linker relocation check. Note, R_PPC_GOT_TPREL16_{HA,LO}
don't have good linker support:
(a) lld does not support R_PPC_GOT_TPREL16_{HA,LO}.
(b) Top of tree ld.bfd does not support R_PPC_GOT_REL16_HA
Initial-Exec -> Local-Exec relaxation:
// a.o
addis 3, 3, tsd_tls@got@tprel@ha
lwz 3, tsd_tls@got@tprel@l(3)
add 3, 3, tsd_tls@tls
// b.o
.section .tdata,"awT"; .globl tsd_tls; tsd_tls:
// ld/ld-new a.o b.o
internal error, aborting at ../../bfd/elf32-ppc.c:7952 in
ppc_elf_relocate_section
Reviewed By: adalava
Differential Revision: https://reviews.llvm.org/D66925
This allows use of LLD for linking 32-bit static binaries on
FreeBSD/powerpc.
Submitted by: Alfredo Dal'Ava Júnior <alfredo.junior@eldorado.org.br>
[IfConversion] Fix diamond conversion with unanalyzable branches.
The code was incorrectly counting the number of identical
instructions, and therefore tried to predicate an instruction which
should not have been predicated. This could have various effects: a
compiler crash, an assembler failure, a miscompile, or just
generating an extra, unnecessary instruction.
Instead of depending on TargetInstrInfo::removeBranch, which only
works on analyzable branches, just remove all branch instructions.
Fixes https://bugs.llvm.org/show_bug.cgi?id=43121 and
https://bugs.llvm.org/show_bug.cgi?id=41121 .
Differential Revision: https://reviews.llvm.org/D67203
This should fix "Unable to predicate BX killed renamable $r0" errors
when building the lang/spidermonkey170 and lang/spidermonkey38 ports for
armv7 and armv6.
PR: 236567
MFC after: 3 days
[ELF] Align the first section of a PT_LOAD even if its type is
SHT_NOBITS
Reported at https://reviews.llvm.org/D64930#1642223
If the only section of a PT_LOAD is a SHT_NOBITS section (e.g. .bss),
we may not align its sh_offset. p_offset of the PT_LOAD will be set
to sh_offset, and we will get p_offset!=p_vaddr (mod p_align). If
such executable is mapped by the Linux kernel, it will segfault.
After D64906, this may happen the non-linker script case.
The linker script case has had this issue for a long time. This was
fixed by rL321657 (but the test linkerscript/nobits-offset.s failed
to test a SHT_NOBITS section), but broken by rL345154.
Reviewed By: peter.smith
Differential Revision: https://reviews.llvm.org/D66658
Pull in r371013 from upstream lld trunk (by Rui Ueyama):
Align output segments correctly
Previously, segments were aligned according to their first section's
alignment requirements. That was not correct, but segments are also
aligned to a page boundary, and a page boundary is usually much
larger than a section alignment requirement, so no one noticed this
bug before.
Now, lld has --nmagic option which sets maxPageSize to 1 to
effectively disable page alignment, which reveals the issue.
Fixes https://bugs.llvm.org/show_bug.cgi?id=43212
Differential Revision: https://reviews.llvm.org/D67152
Together, these should ensure gpboot.out gets a correctly aligned offset
for its .rodata section, and fix "layout constraint violation" errors
from objcopy.
lldb prepends the thread name to log entries, and the existing thread
name for the FreeBSD ProcessMonitor thread was longer than the kernel's
supported thread name length, and so was truncated. This made logs hard
to read, as the truncated thread name ran into the log message. Shorten
"lldb.process.freebsd.operation" to just "freebsd.op" so that logs are
more readable.
(Upstreaming to lldb still to be done).
gets is unsafe and shouldn't be used (for many years now). Leave it in
the existing symbol version so anything that previously linked aginst it
still runs, but do not allow new software to link against it.
(The compatability/legacy implementation must not be static so that
the symbol and in particular the compat sym gets@FBSD_1.0 make it
into libc.)
PR: 222796 (exp-run)
Reported by: Paul Vixie
Reviewed by: allanjude, cy, eadler, gnn, jhb, kib, ngie (some earlier)
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12298
Fix a problem which prevented -OServerSSLOptions or -OClientSSLOptions
specified in the command-line option from working.
This patch has been accepted by the upstream.
Reviewed by and discussed with: gshapiro
Update wpa 2.8 --> 2.9
hostapd:
* SAE changes
- disable use of groups using Brainpool curves
- improved protection against side channel attacks
[https://w1.fi/security/2019-6/]
* EAP-pwd changes
- disable use of groups using Brainpool curves
- improved protection against side channel attacks
[https://w1.fi/security/2019-6/]
* fixed FT-EAP initial mobility domain association using PMKSA caching
* added configuration of airtime policy
* fixed FILS to and RSNE into (Re)Association Response frames
* fixed DPP bootstrapping URI parser of channel list
* added support for regulatory WMM limitation (for ETSI)
* added support for MACsec Key Agreement using IEEE 802.1X/PSK
* added experimental support for EAP-TEAP server (RFC 7170)
* added experimental support for EAP-TLS server with TLS v1.3
* added support for two server certificates/keys (RSA/ECC)
* added AKMSuiteSelector into "STA <addr>" control interface data to
determine with AKM was used for an association
* added eap_sim_id parameter to allow EAP-SIM/AKA server pseudonym and
fast reauthentication use to be disabled
* fixed an ECDH operation corner case with OpenSSL
wpa_supplicant:
* SAE changes
- disable use of groups using Brainpool curves
- improved protection against side channel attacks
[https://w1.fi/security/2019-6/]
* EAP-pwd changes
- disable use of groups using Brainpool curves
- allow the set of groups to be configured (eap_pwd_groups)
- improved protection against side channel attacks
[https://w1.fi/security/2019-6/]
* fixed FT-EAP initial mobility domain association using PMKSA caching
(disabled by default for backwards compatibility; can be enabled
with ft_eap_pmksa_caching=1)
* fixed a regression in OpenSSL 1.1+ engine loading
* added validation of RSNE in (Re)Association Response frames
* fixed DPP bootstrapping URI parser of channel list
* extended EAP-SIM/AKA fast re-authentication to allow use with FILS
* extended ca_cert_blob to support PEM format
* improved robustness of P2P Action frame scheduling
* added support for EAP-SIM/AKA using anonymous@realm identity
* fixed Hotspot 2.0 credential selection based on roaming consortium
to ignore credentials without a specific EAP method
* added experimental support for EAP-TEAP peer (RFC 7170)
* added experimental support for EAP-TLS peer with TLS v1.3
* fixed a regression in WMM parameter configuration for a TDLS peer
* fixed a regression in operation with drivers that offload 802.1X
4-way handshake
* fixed an ECDH operation corner case with OpenSSL
MFC after: 1 week
Security: https://w1.fi/security/2019-6/\
sae-eap-pwd-side-channel-attack-update.txt
Rework recursive_timed_mutex so that it uses __thread_id instead of
using the lower-level __libcpp_thread_id. This is prep for fixing
PR42918. Reviewed as https://reviews.llvm.org/D65895
Pull in r368916 from upstream libc++ trunk (by Marshall Clow):
Fix thread comparison by making sure we never pass our special 'not a
thread' value to the underlying implementation. Fixes PR#42918.
This should fix std:🧵🆔:operator==() attempting to call
pthread_equal(3) with zero values.
Reported by: andrew@tao11.riddles.org.uk
PR: 239038, 239550
MFC after: 3 days
Per the July 22, 1999 letter (in /COPYRIGHT) from
William Hoskins
Director, Office of Technology Licensing
University of California, Berkeley
MFC after: 1 week
Adjust argc and argv by optind before using them. This slightly
simplifies the code. No functional change intended.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21079
The low fd limit used by poudriere exposed an odd failure mode in
cap_fileargs (used by readelf as of r350516). In particular, when
the limit was hit, both the main process and casper service would
block on their shared socket, waiting forever for the other to send a
message.
Reported by: zeising
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
pthread_cond_timedwait() should wait _at least_ until the timeout,
but it might appear to wait longer due to system activity and
scheduling. The test ignored fractional seconds when comparing the
actual and expected timeouts, so it allowed anywhere between zero
and one extra second of wait time. Zero is a bit unreasonable.
Compare fractional seconds so we always allow up to one extra second.
Reviewed by: ngie
MFC after: 1 week
Sponsored by: Dell EMC Isilon
In the future FreeBSD will ship without GNU binutils 2.17.50. Add a
note advising users who require GNU as to install the binutils port
or package.
Note that on armv7, arm64, amd64, i386 we currently ship only two
binutils tools (as and objdump). A deprecation notice was added to
objdump's man page some time ago.
PR: 233611
Discussed with: jhb
MFC after: 1 week
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
These bits are used for Intel CET IBT/Shadow Stack.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20516
We may install llvm-objdump as objdump (see review D18307) or just
provide no /usr/bin/objdump, but either way GNU objdump won't be
installed in the future.
MFC after: 3 days
This is a backport of LLVM commit 8331f61a51a7a0a1efbf5ed398e181593023d151,
llvm-svn: 353981:
ELF: Allow GOT relocs pointing to non-preemptable ifunc to resolve to an
IRELATIVE where possible.
This is needed in order to make ifuncs work correctly on PPC64.
It fixes an issue with lld, in which it would skip emitting necessary IRELATIVE
relocations. Without this change, indirect calls to ifuncs would result in a
segmentation fault, in static binaries or when defined in the main binary
(outside shared libraries).
This change also reverts the local
"Preserve relocations against ifuncs when -zifunc-noplt" commit and
replaces it by its upstream version, as part of the merge.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D21102
Modify strip(1) to not accept multiple input files when an output
file is specified. There is no good way to handle this combination,
and the change is compatible with binutils.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
[CodeGen][NFC] Simplify checks for stack protector index checking
Use `hasStackProtectorIndex()` instead of `getStackProtectorIndex()
>= 0`.
Pull in r366371 from upstream llvm trunk (by Francis Visoiu Mistrih):
[PEI] Don't re-allocate a pre-allocated stack protector slot
The LocalStackSlotPass pre-allocates a stack protector and makes sure
that it comes before the local variables on the stack.
We need to make sure that later during PEI we don't re-allocate a new
stack protector slot. If that happens, the new stack protector slot
will end up being **after** the local variables that it should be
protecting.
Therefore, we would have two slots assigned for two different stack
protectors, one at the top of the stack, and one at the bottom. Since
PEI will overwrite the assigned slot for the stack protector, the
load that is used to compare the value of the stack protector will
use the slot assigned by PEI, which is wrong.
For this, we need to check if the object is pre-allocated, and re-use
that pre-allocated slot.
Differential Revision: https://reviews.llvm.org/D64757
Pull in r367068 from upstream llvm trunk (by Francis Visoiu Mistrih):
[CodeGen] Don't resolve the stack protector frame accesses until PEI
Currently, stack protector loads and stores are resolved during
LocalStackSlotAllocation (if the pass needs to run). When this is the
case, the base register assigned to the frame access is going to be
one of the vregs created during LocalStackSlotAllocation. This means
that we are keeping a pointer to the stack protector slot, and we're
using this pointer to load and store to it.
In case register pressure goes up, we may end up spilling this
pointer to the stack, which can be a security concern.
Instead, leave it to PEI to resolve the frame accesses. In order to
do that, we make all stack protector accesses go through frame index
operands, then PEI will resolve this using an offset from sp/fp/bp.
Differential Revision: https://reviews.llvm.org/D64759
Together, these fix a issue where the stack protection feature in LLVM's
ARM backend can be rendered ineffective when the stack protector slot is
re-allocated so that it appears after the local variables that it is
meant to protect, leaving the function potentially vulnerable to a
stack-based buffer overflow.
Reported by: andrew
Security: https://kb.cert.org/vuls/id/129209/
MFC after: 3 days
This snapshot among other things includes a fix for a crash of mandoc with empty
tbl reported by rea@ (his regression test has been incorporated upstream)
MFC after: 3 weeks
