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
8.0.1 final release r366581. The only functional change is a fix for a
mismerge of upstream r360816, which properly restores the r2 register
when unwinding on PowerPC64 (See https://reviews.freebsd.org/D20337).
Relnotes: yes
PR: 236062
MFC after: 3 days
X-MFC-With: r349004
It is declared here and in rfc931.c and unused here so keep that copy
and discard this one.
Obtained from: CheriBSD
MFC after: 1 week
Sponsored by: DARPA, AFRL
When O_CREAT is specified, the third, variadic argument is
required as the permission. If on is not passed, then depending
on the ABI, either the contents of the third argument register
or some arbitrary stuff on the stack will be used as the permission.
This has been merged to NetBSD.
Reviewed by: asomers, ngie
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D20972
In both cases, function pointer arguments were inconsistently declared
and the result worked because of C's odd rules around function pointer
(de)references. With a stricter compiler these fail to compile.
Reviewed by: cem
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D20964
[ELF] Handle non-glob patterns before glob patterns in version
scripts & fix a corner case of --dynamic-list
This fixes PR38549, which is silently accepted by ld.bfd.
This seems correct because it makes sense to let non-glob patterns
take precedence over glob patterns.
lld issues an error because
`assignWildcardVersion(ver, VER_NDX_LOCAL);` is processed before
`assignExactVersion(ver, v.id, v.name);`.
Move all assignWildcardVersion() calls after assignExactVersion()
calls to fix this.
Also, move handleDynamicList() to the bottom. computeBinding() called
by includeInDynsym() has this cryptic rule:
if (versionId == VER_NDX_LOCAL && isDefined() && !isPreemptible)
return STB_LOCAL;
Before the change:
* foo's version is set to VER_NDX_LOCAL due to `local: *`
* handleDynamicList() is called
- foo.computeBinding() is STB_LOCAL
- foo.includeInDynsym() is false
- foo.isPreemptible is not set (wrong)
* foo's version is set to V1
After the change:
* foo's version is set to VER_NDX_LOCAL due to `local: *`
* foo's version is set to V1
* handleDynamicList() is called
- foo.computeBinding() is STB_GLOBAL
- foo.includeInDynsym() is true
- foo.isPreemptible is set (correct)
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D64550
This makes it longer necessary to patch the version scripts for the
samba ports, to avoid "duplicate symbol 'pdb_search_init' in version
script" errors.
PR: 230602
MFC after: 3 days
3.4.1, which is still in the stable/10 branch.
It looks like clang 3.4.1 implements static_asserts by instantiating a
temporary static object, and if those are in an anonymous union, it
results in "error: anonymous union can only contain non-static data
members".
To work around this implementation limitation, move the static_asserts
in question out of the anonymous unions.
This should make building the latest stable/11 from stable/10 possible
again.
Reported by: Mike Tancsa <mike@sentex.net>
MFC after: 3 days
libunwind and openmp to the upstream release_80 branch r364487
(effectively, 8.0.1 rc3). The 8.0.1 release will most likely
have no further changes.
MFC after: 1 week
X-MFC-With: r349004
Otherwise a future call to elf_errno() will return a non-zero value.
update_shdr(), for example, treats any errors associated with the ELF
descriptor as fatal. Clear the error per the first example in
elf_errmsg.3.
Convert to elf_getshdrstrndx() while here since elf_getshstrndx() is
apparently deprecated.
Reported by: royger
Reviewed by: emaste
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20852
Clarify comments on helpers used by LFTR [NFC]
I'm slowly wrapping my head around this code, and am making comment
improvements where I can.
Pull in r360972 from upstream llvm trunk (by Philip Reames):
[LFTR] Factor out a helper function for readability purpose [NFC]
Pull in r360976 from upstream llvm trunk (by Philip Reames):
[IndVars] Don't reimplement Loop::isLoopInvariant [NFC]
Using dominance vs a set membership check is indistinguishable from a
compile time perspective, and the two queries return equivelent
results. Simplify code by using the existing function.
Pull in r360978 from upstream llvm trunk (by Philip Reames):
[LFTR] Strengthen assertions in genLoopLimit [NFCI]
Pull in r362292 from upstream llvm trunk (by Nikita Popov):
[IndVarSimplify] Fixup nowrap flags during LFTR (PR31181)
Fix for https://bugs.llvm.org/show_bug.cgi?id=31181 and partial fix
for LFTR poison handling issues in general.
When LFTR moves a condition from pre-inc to post-inc, it may now
depend on value that is poison due to nowrap flags. To avoid this, we
clear any nowrap flag that SCEV cannot prove for the post-inc addrec.
Additionally, LFTR may switch to a different IV that is dynamically
dead and as such may be arbitrarily poison. This patch will correct
nowrap flags in some but not all cases where this happens. This is
related to the adoption of IR nowrap flags for the pre-inc addrec.
(See some of the switch_to_different_iv tests, where flags are not
dropped or insufficiently dropped.)
Finally, there are likely similar issues with the handling of GEP
inbounds, but we don't have a test case for this yet.
Differential Revision: https://reviews.llvm.org/D60935
Pull in r362971 from upstream llvm trunk (by Philip Reames):
Prepare for multi-exit LFTR [NFC]
This change does the plumbing to wire an ExitingBB parameter through
the LFTR implementation, and reorganizes the code to work in terms of
a set of individual loop exits. Most of it is fairly obvious, but
there's one key complexity which makes it worthy of consideration.
The actual multi-exit LFTR patch is in D62625 for context.
Specifically, it turns out the existing code uses the backedge taken
count from before a IV is widened. Oddly, we can end up with a
different (more expensive, but semantically equivelent) BE count for
the loop when requerying after widening. For the nestedIV example
from elim-extend, we end up with the following BE counts:
BEFORE: (-2 + (-1 * %innercount) + %limit)
AFTER: (-1 + (sext i32 (-1 + %limit) to i64) + (-1 * (sext i32 %innercount to i64))<nsw>)
This is the only test in tree which seems sensitive to this
difference. The actual result of using the wider BETC on this example
is that we actually produce slightly better code. :)
In review, we decided to accept that test change. This patch is
structured to preserve the old behavior, but a separate change will
immediate follow with the behavior change. (I wanted it separate for
problem attribution purposes.)
Differential Revision: https://reviews.llvm.org/D62880
Pull in r362975 from upstream llvm trunk (by Philip Reames):
[LFTR] Use recomputed BE count
This was discussed as part of D62880. The basic thought is that
computing BE taken count after widening should produce (on average)
an equally good backedge taken count as the one before widening.
Since there's only one test in the suite which is impacted by this
change, and it's essentially equivelent codegen, that seems to be a
reasonable assertion. This change was separated from r362971 so that
if this turns out to be problematic, the triggering piece is obvious
and easily revertable.
For the nestedIV example from elim-extend.ll, we end up with the
following BE counts:
BEFORE: (-2 + (-1 * %innercount) + %limit)
AFTER: (-1 + (sext i32 (-1 + %limit) to i64) + (-1 * (sext i32 %innercount to i64))<nsw>)
Note that before is an i32 type, and the after is an i64. Truncating
the i64 produces the i32.
Pull in r362980 from upstream llvm trunk (by Philip Reames):
Factor out a helper function for readability and reuse in a future
patch [NFC]
Pull in r363613 from upstream llvm trunk (by Philip Reames):
Fix a bug w/inbounds invalidation in LFTR (recommit)
Recommit r363289 with a bug fix for crash identified in pr42279.
Issue was that a loop exit test does not have to be an icmp, leading
to a null dereference crash when new logic was exercised for that
case. Test case previously committed in r363601.
Original commit comment follows:
This contains fixes for two cases where we might invalidate inbounds
and leave it stale in the IR (a miscompile). Case 1 is when switching
to an IV with no dynamically live uses, and case 2 is when doing
pre-to-post conversion on the same pointer type IV.
The basic scheme used is to prove that using the given IV (pre or
post increment forms) would have to already trigger UB on the path to
the test we're modifying. As such, our potential UB triggering use
does not change the semantics of the original program.
As was pointed out in the review thread by Nikita, this is defending
against a separate issue from the hasConcreteDef case. This is about
poison, that's about undef. Unfortunately, the two are different, see
Nikita's comment for a fuller explanation, he explains it well.
(Note: I'm going to address Nikita's last style comment in a separate
commit just to minimize chance of subtle bugs being introduced due to
typos.)
Differential Revision: https://reviews.llvm.org/D62939
Pull in r363875 from upstream llvm trunk (by Philip Reames):
[LFTR] Rename variable to minimize confusion [NFC]
(Recommit of r363293 which was reverted when a dependent patch was.)
As pointed out by Nikita in D62625, BackedgeTakenCount is generally
used to refer to the backedge taken count of the loop. A conditional
backedge taken count - one which only applies if a particular exit is
taken - is called a ExitCount in SCEV code, so be consistent here.
Pull in r363877 from upstream llvm trunk (by Philip Reames):
[LFTR] Stylistic cleanup as suggested in last review comment of
D62939 [NFC]
(Resumbit of r363292 which was reverted along w/an earlier patch)
Pull in r364346 from upstream llvm trunk (by Philip Reames):
[LFTR] Adjust debug output to include extensions (if any)
Pull in r364693 from upstream llvm trunk (by Philip Reames):
[IndVars] Remove a bit of manual constant folding [NFC]
SCEV is more than capable of folding (add x, trunc(0)) to x.
Pull in r364709 from upstream llvm trunk (by Nikita Popov):
[LFTR] Fix post-inc pointer IV with truncated exit count (PR41998)
Fixes https://bugs.llvm.org/show_bug.cgi?id=41998. Usually when we
have a truncated exit count we'll truncate the IV when comparing
against the limit, in which case exit count overflow in post-inc form
doesn't matter. However, for pointer IVs we don't do that, so we have
to be careful about incrementing the IV in the wide type.
I'm fixing this by removing the IVCount variable (which was ExitCount
or ExitCount+1) and replacing it with a UsePostInc flag, and then
moving the actual limit adjustment to the individual cases (which
are: pointer IV where we add to the wide type, integer IV where we
add to the narrow type, and constant integer IV where we add to the
wide type).
Differential Revision: https://reviews.llvm.org/D63686
Together, these should fix a hang when building the textproc/htmldoc
port, due to an incorrect loop optimization.
PR: 237515
MFC after: 1 week
This is required in order to build on non-FreeBSD systems without setting
all the XAR/XSTRINGS/etc. variables
Reviewed By: emaste
Differential Revision: https://reviews.freebsd.org/D16771
This allows DWARF debugging output to use the common register
mneumonics, such as ra, sp, or t0.
DWARF registers 0-31 are mapped to the 32 general purpose registers,
which are then followed by the 32 floating point registers.
Reviewed by: markj
Approved by: markj (mentor)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D20779
r349482 introduced the definitions and descriptions of the RISC-V
specific e_flags values to elftoolchain. However, the description for
the EF_RISCV_RVE flag was incorrectly duplicated from EF_RISCV_RVC. Fix
this by providing the proper description for this flag.
Reported by: jhb
Approved by: markj (mentor)
This prints out description text with the meaning of 'Flags' value in PowerPC64.
Example:
$ readelf -h ~/tmp/t1-Flag2
ELF Header:
Magic: 7f 45 4c 46 02 02 01 09 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, big endian
Version: 1 (current)
OS/ABI: FreeBSD
ABI Version: 0
Type: EXEC (Executable file)
Machine: PowerPC 64-bit
Version: 0x1
Entry point address: 0x10010000
Start of program headers: 64 (bytes into file)
Start of section headers: 209368 (bytes into file)
Flags: 0x2, OpenPOWER ELF V2 ABI
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 10
Size of section headers: 64 (bytes)
Number of section headers: 34
Section header string table index: 31
Submitted by: alfredo.junior_eldorado.org.br
Reviewed by: luporl
Differential Revision: https://reviews.freebsd.org/D20782
The distinction between ELF header version and OpenPOWER ELF ABI version is
confusing for most of people, so this adds text to "file" output to make it
clear about which OpenPOWER ELF ABI version binary was built for.
The strings used in this change are based on "64-Bit ELF V2 ABI
Specification/3.1. ELF Header" document available at
http://openpowerfoundation.org/wp-content/uploads/resources/leabi/content/dbdoclet.50655241_97607.html
Example:
$ file t1-Flag2 -m -m contrib/file/magic/Magdir/elf t1-Flag2: ELF 64-bit MSB
executable, 64-bit PowerPC or cisco 7500, OpenPOWER ELF V2 ABI, version 1
(FreeBSD), dynamically linked, interpreter /libexec/ld-elf.so.1, for FreeBSD
13.0 (1300033), FreeBSD-style, not stripped
Submitted by: alfredo.junior_eldorado.org.br
Reviewed by: luporl
Differential Revision: https://reviews.freebsd.org/D20771
PR/238816 initially addressed updates to usage() however it has now
become a shopping list of fixes to ipmon man pages and usage().
PR: 238816
MFC after: 3 days
Previously we would perform a linear search of the DWARF section
list for ".debug_str". However, libdwarf always caches a pointer to
the strtab image in its debug descriptor. Using it gives a modest
performance improvement when iterating over the attributes of each
DIE.
Reviewed by: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20759
Use the input file's .shstrtab size as the hint if it exists. This
gives a small performance improvement when processing files with
many sections.
Reviewed by: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20544
The string's length is already known, so use memcpy() instead of
strcpy() to add it to the string table image.
Reviewed by: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20760
Summary:
Toolchain follow-up to r349350. LLVM patches will be submitted upstream for
9.0 as well.
The bsd.cpu.mk change is required because GNU ld assumes BSS-PLT if it
cannot determine for certain that it needs Secure-PLT, and some binaries do
not compile in such a way to make it know to use Secure-PLT.
Reviewed By: nwhitehorn, bdragon, pfg
Differential Revision: https://reviews.freebsd.org/D20598
Summary:
PowerPC has two PLT models: BSS-PLT and Secure-PLT. BSS-PLT uses runtime
code generation to generate the PLT stubs. Secure-PLT was introduced with
GCC 4.1 and Binutils 2.17 (base has GCC 4.2.1 and Binutils 2.17), and is a
more secure PLT format, using a read-only linkage table, with the dynamic
linker populating a non-executable index table.
This is the libc, rtld, and kernel support only. The toolchain and build
parts will be updated separately.
Reviewed By: nwhitehorn, bdragon, pfg
Differential Revision: https://reviews.freebsd.org/D20598
MFC after: 1 month
inconsistent. This patch fixes that and improves the precision of
the description.
Thanks to Tom Marcoen for reporting the issue and providing an
initial patch, on which this change is based.
PR: 237723
Reviewed by: bcr@
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D20708
libunwind and openmp to the upstream release_80 branch r363030
(effectively, 8.0.1 rc2). The 8.0.1 release should follow this within a
week or so.
MFC after: 2 weeks
Sync libarchive with vendor.
Relevant vendor changes:
- check_symlinks_fsobj() without chdir() and fchdir()
- bsdtar.1 manpage fixes
- patches from OpenBSD to libarchive_fe/passphrase.c
- version bumped to 3.4.0
MFC after: 2 weeks
- Add constants for OpenBSD wxneeded, bootdata and randomize to the
FreeBSD elf_common.h file. This is the file that gets used by the
elftoolchain library.
- Update readelf and elfdump utilities to decode these program headers
if they are encountered.
Note: FreeBSD has it's own version of elfdump(1), which will be updated
in a subsequent commit. I am adding it here anyway because this diff is
going to be submitted upstream.
Discussed with: emaste
Reviewed by: imp
MFC afer: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20548
M contrib/elftoolchain/elfdump/elfdump.c
M contrib/elftoolchain/readelf/readelf.c
M sys/sys/elf_common.h
