Upstream commit message:
[PATCH 3/3] WPS UPnP: Handle HTTP initiation failures for events more
properly
While it is appropriate to try to retransmit the event to another
callback URL on a failure to initiate the HTTP client connection, there
is no point in trying the exact same operation multiple times in a row.
Replve the event_retry() calls with event_addr_failure() for these cases
to avoid busy loops trying to repeat the same failing operation.
These potential busy loops would go through eloop callbacks, so the
process is not completely stuck on handling them, but unnecessary CPU
would be used to process the continues retries that will keep failing
for the same reason.
Obtained from: https://w1.fi/security/2020-1/\
0003-WPS-UPnP-Handle-HTTP-initiation-failures-for-events-.patch
MFC after: 3 days
Security: VU#339275 and CVE-2020-12695
Upstream commit message:
[PATCH 2/3] WPS UPnP: Fix event message generation using a long URL path
More than about 700 character URL ended up overflowing the wpabuf used
for building the event notification and this resulted in the wpabuf
buffer overflow checks terminating the hostapd process. Fix this by
allocating the buffer to be large enough to contain the full URL path.
However, since that around 700 character limit has been the practical
limit for more than ten years, start explicitly enforcing that as the
limit or the callback URLs since any longer ones had not worked before
and there is no need to enable them now either.
Obtained from: https://w1.fi/security/2020-1/\
0002-WPS-UPnP-Fix-event-message-generation-using-a-long-U.patch
MFC after: 3 days
Security: VU#339275 and CVE-2020-12695
Upstream commit message:
[PATCH 1/3] WPS UPnP: Do not allow event subscriptions with URLs to
other networks
The UPnP Device Architecture 2.0 specification errata ("UDA errata
16-04-2020.docx") addresses a problem with notifications being allowed
to go out to other domains by disallowing such cases. Do such filtering
for the notification callback URLs to avoid undesired connections to
external networks based on subscriptions that any device in the local
network could request when WPS support for external registrars is
enabled (the upnp_iface parameter in hostapd configuration).
Obtained from: https://w1.fi/security/2020-1/\
0001-WPS-UPnP-Do-not-allow-event-subscriptions-with-URLs-.patch
MFC after: 3 days
Security: VU#339275 and CVE-2020-12695
summary of changes, or for a more thorough overview:
https://subversion.apache.org/docs/release-notes/1.14
NOTE: there is no need to dump and reload repositories, and the working
copy format is still the same as Subversion 1.8 through 1.13.
Relnotes: yes
MFC after: 2 weeks
X-MFC-With: r361677
Update unbound 1.9.6 --> 1.10.1.
Bug Fixes:
- CVE-2020-12662 Unbound can be tricked into amplifying an incoming
query into a large number of queries directed to a target.
- CVE-2020-12663 Malformed answers from upstream name servers can be
used to make Unbound unresponsive.
Reported by: emaste
MFC after: 3 days
Relnotes: yes
Security: CVE-2020-12662, CVE-2020-12663
Changes since 20181221 are mostly portability related
hence the large gap in versions imported.
There are however some bug fixes, and a rework of filemon handling.
In NetBSD make/filemon/filemon_ktrace.c allows use of fktrace
and elimination of filemon(4) which has not had the TLC it needs.
FreeBSD filemon(4) is in much better shape, so bmake/filemon/filemon_dev.c
allows use of that, with a bit less overhead than the ktrace model.
Summary of changes from ChangeLog
o str.c: empty string does not match % pattern
plus unit-test changes
o var.c: import handling of old sysV style modifier using '%'
o str.c: refactor brk_string
o meta.c: meta_oodate, CHECK_VALID_META is too aggressive for CMD
a blank command is perfectly valid.
o meta.c: meta_oodate, check for corrupted meta file
earlier and more often.
* meta.c: meta_compat_parent check for USE_FILEMON
patch from Soeren Tempel
o meta.c: fix compat mode, need to call meta_job_output()
o job.c: extra fds for meta mode not needed if using filemon_dev
o meta.c: avoid passing NULL to filemon_*() when meta_needed()
returns FALSE.
o filemon/filemon_{dev,ktrace}.c: allow selection of
filemon implementation. filemon_dev.c uses the kernel module
while filemon_ktrace.c leverages the fktrace api available in
NetBSD. filemon_ktrace.c can hopefully form the basis for
adding support for other tracing mechanisms such as strace on
Linux.
o meta.c: when target is out-of-date per normal make rules
record value of .OODATE in meta file.
o parse.c: don't pass NULL to realpath(3)
some versions cannot handle it.
o parse.c: ParseDoDependency: free paths rather than assert
plus more unit-tests
Update libarchive to 3.4.3
Relevant vendor changes:
PR #1352: support negative zstd compression levels
PR #1359: improve zstd version checking
PR #1348: support RHT.security.selinux from GNU tar
PR #1357: support for archives compressed with pzstd
PR #1367: fix issues in acl tests
PR #1372: child handling cleanup
PR #1378: fix memory leak from passphrase callback
Libarchive 3.4.3
Relevant vendor changes:
PR #1352: support negative zstd compression levels
PR #1359: improve zstd version checking
PR #1348: support RHT.security.selinux from GNU tar
PR #1357: support for archives compressed with pzstd
PR #1367: fix issues in acl tests
PR #1372: child handling cleanup
PR #1378: fix memory leak from passphrase callback
radio is disabled through the communication device toggle key (also known
as the RF raidio kill button). Only the CTRL-EVENT-DISCONNECTED will be
issued.
Submitted by: avg
Reported by: avg
MFC after: 1 week
Some cmake test parses the output of the first line of as --version, and
emits an error if it does not contain some expected strings:
Checking whether the ASM compiler is GNU using "--version" did not match
"(GNU assembler)|(GCC)|(Free Software Foundation)"
Emit the deprecation message later, after parsing argv and thus --version.
PR: 246540
Reported by: dch
Sponsored by: The FreeBSD Foundation
getMainExecutable: Fix hand-rolled AT_EXECPATH for older FreeBSD
Once we hit AT_NULL, we need to bail out of the loop; not just the
enclosing switch. This fixes basic usage (e.g. `cc --version`) when
AT_EXECPATH isn't present on older branches (e.g. under
emu-user-static, at the moment), where we would previously run off
the end of ::environ.
Patch By: kevans
Reviewed By: arichardson
Differential Revision: https://reviews.llvm.org/D79239
MFC after: 3 days
[PowerPC] Add clang -msvr4-struct-return for 32-bit ELF
Summary:
Change the default ABI to be compatible with GCC. For 32-bit ELF
targets other than Linux, Clang now returns small structs in
registers r3/r4. This affects FreeBSD, NetBSD, OpenBSD. There is no
change for 32-bit Linux, where Clang continues to return all structs
in memory.
Add clang options -maix-struct-return (to return structs in memory)
and -msvr4-struct-return (to return structs in registers) to be
compatible with gcc. These options are only for PPC32; reject them on
PPC64 and other targets. The options are like -fpcc-struct-return and
-freg-struct-return for X86_32, and use similar code.
To actually return a struct in registers, coerce it to an integer of
the same size. LLVM may optimize the code to remove unnecessary
accesses to memory, and will return i32 in r3 or i64 in r3:r4.
Fixes PR#40736
Patch by George Koehler!
Reviewed By: jhibbits, nemanjai
Differential Revision: https://reviews.llvm.org/D73290
Requested by: jhibbits
MFC after: 3 days
unsupported relocation on symbol" when assembling arm 'adr' pseudo
instructions. However, the upstream commit did not take big-endian arm
into account.
Applying the same changes to the big-endian handling is straightforward,
thanks to Andrew Turner and Peter Smith for the hint. This will also be
submitted upstream.
MFC after: immediately, since this fix is meant for stable/11
The pwcache functions allocate memory, and may return NULL pointers if that
allocation fails and the corresponding uid or gid was not found in the local
password database. Document this behavior.
Sponsored by: Dell EMC Isilon
The Sv48 PTE format is the largest currently defined address space for
RISC-V. It makes no sense to define a larger size and doing so (at
least for 64-bits) forces rtrees down a slow path.
Reviewed by: vangyzen, jhb, mhorne
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24658
[ARM] Only produce qadd8b under hasV6Ops
When compiling for a arm5te cpu from clang, the +dsp attribute is
set. This meant we could try and generate qadd8 instructions where we
would end up having no pattern. I've changed the condition here to be
hasV6Ops && hasDSP, which is what other parts of ARMISelLowering seem
to use for similar instructions.
Fixed PR45677.
This fixes "fatal error: error in backend: Cannot select: t37: i32 =
ARMISD::QADD8b t43, t44" when compiling sys/dev/sound/pcm/feeder_mixer.c
for armv5. For some reason we do not encounter this on head, but this
error popped up while building universes for stable/12.
MFC after: 3 days
Revert r354606 to restore r354605.
Apply one line from jemalloc commit d01b425e5d1e1 in hash_x86_128()
to fix the build with gcc, which only allows a fallthrough attribute
to appear before a case or default label.
Submitted by: jasone in r354605
Discussed with: jasone
Reviewed by: bdrewery
MFC after: never, due to gcc 4.2.1
Relnotes: yes
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D24522
The segfault fix was originally developed by our upstream, sqlite.org,
to address S/390 and Sparc segfaults, both of which are big endian.
Our PowerPC is also big endian, which this patch also fixes.
Reported by: Mark Millard <marklmi at yahoo.com>
Tested by: Mark Millard <marklmi at yahoo.com>
Obtained from: https://www.sqlite.org/src/vinfo/04885763c4cd00cb?diff=1https://sqlite.org/forum/forumpost/672291a5b2
MFC after: 1 month
X-MFC with: r360221, 360221
recommit r357201: MFV r357163, which was reverted by r357522
due to segfault under PowerPc.
Update sqlite3-3.30.1 (3300100) --> sqlite3-3.31.0 (3310000)
MFC after: 1 month
[PowerPC] Do not attempt to reuse load for 64-bit FP_TO_UINT without
FPCVT
We call the function that attempts to reuse the conversion without
checking whether the target matches the constraints that the callee
expects. This patch adds the check prior to the call.
Fixes: https://bugs.llvm.org/show_bug.cgi?id=43976
Differential revision: https://reviews.llvm.org/D77564
This should fix 'Assertion failed: ((Op.getOpcode() == ISD::FP_TO_SINT
|| Subtarget.hasFPCVT()) && "i64 FP_TO_UINT is supported only with
FPCVT"), function LowerFP_TO_INTForReuse, file
/usr/src/contrib/llvm/lib/Target/PowerPC/PPCISelLowering.cpp, line 7276'
when building the devel/libslang2 port (and a few others) for PowerPC64.
Requested by: pkubaj
MFC after: 6 weeks
X-MFC-With: 358851
Use FinishThunk to finish musttail thunks
FinishThunk, and the invariant of setting and then unsetting
CurCodeDecl, was added in 7f416cc42638 (2015). The invariant didn't
exist when I added this musttail codepath in ab2090d10765 (2014).
Recently in 28328c3771, I started using this codepath on non-Windows
platforms, and users reported problems during release testing
(PR44987).
The issue was already present for users of EH on i686-windows-msvc,
so I added a test for that case as well.
Reviewed By: hans
Differential Revision: https://reviews.llvm.org/D76444
This should fix 'Assertion failed: (!empty() && "popping exception stack
when not empty"), function popTerminate, file
/usr/src/contrib/llvm-project/clang/lib/CodeGen/CGCleanup.h, line 583'
when building the net-p2p/libtorrent-rasterbar
PR: 244830
Reported by: jbeich, yuri
MFC after: 6 weeks
X-MFC-With: 358851
According to the upstream man page (which we don't install), none of
libauditd's symbols are intended to be public. Also, I can't find any
evidence for a port that uses libauditd. Therefore, we should treat it like
other such libraries and use PRIVATELIB.
Reported by: phk
Reviewed by: cem, emaste
MFC after: 2 weeks
Fix bots after a9ad65a2b34f
In the last commit, I neglected to initialize the new subtarget
feature I added which caused failures on a few bots. This should fix
that.
This unbreaks the build after r359981, which reverted upstream commit
a9ad65a2b34f.
Reported by: jhibbits (and jenkins :)
MFC after: 6 weeks
X-MFC-With: 358851
[PowerPC] Change default for unaligned FP access for older subtargets
This is a fix for https://bugs.llvm.org/show_bug.cgi?id=40554
Some CPU's trap to the kernel on unaligned floating point access and
there are kernels that do not handle the interrupt. The program then
fails with a SIGBUS according to the PR. This just switches the
default for unaligned access to only allow it on recent server CPUs
that are known to allow this.
Differential revision: https://reviews.llvm.org/D71954
This upstream commit causes a compiler hang when building certain ports
(e.g. security/nss, multimedia/x264) for powerpc64. The hang has been
reported in https://bugs.llvm.org/show_bug.cgi?id=45186, but in the mean
time it is more convenient to revert the commit.
Requested by: jhibbits
MFC after: 6 weeks
X-MFC-With: 358851
Make target features check work with ctor and dtor-
The problem was reported in PR45468, applying target features to an
always_inline constructor/destructor runs afoul of GlobalDecl
construction assert when checking for target-feature compatibility.
The core problem is fixed by using the version of the check that
takes a FunctionDecl rather than the GlobalDecl. However, while
writing the test, I discovered that source locations weren't properly
set for this check on ctors/dtors. This patch also fixes constructors
and CALLED destructors.
Unfortunately, it doesn't seem too possible to get a meaningful
source location for a 'cleanup' destructor, so those are still
'frontend' level errors unfortunately. A fixme was added to the test
to cover that situation.
This should fix 'Assertion failed: (!isa<CXXConstructorDecl>(D) && "Use
other ctor with ctor decls!"), function Init, file
/usr/src/contrib/llvm-project/clang/include/clang/AST/GlobalDecl.h, line
45' when compiling the security/botan2 port.
PR: 245550
MFC after: 6 weeks
X-MFC-With: 358851
In the FreeBSD base system we do not have Python support in lldb, but
will have Lua support. Make Lua the default.
This needs to be made into a configure-time option; that is being
discussed upstream and will appear in a future lldb import. For now
carry this change as a tiny patch to our copy of lldb.
With liblua in the tree we should be able to enable lldb's lua
scripting. We'll need the files in bindings/, so start by allowing them
to come in with the next import.
Approved by: dim
Sponsored by: The FreeBSD Foundation
like it already does on Linux and OSX. This results in significantly
fewer calls to mmap(2). This should result in a small reduction
in system CPU time and improved superpage usage.
Reviewed by: markj
Tested by: markj
MFC after: 2 weeks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D23874
debug was declared extern, but debug_file was not; correct this and define
debug_file in main.c (as debug is) to fix the -fno-common build.
-fno-common will become the default with GCC10/LLVM11.
MFC after: 3 days
As noted by brooks/emaste, this is the wrong approach to take.
Revert the changes so brooks can apply a more proper change.
Requested by: brooks, emaste
thishost is already defined in lib/initparse.c; no need for this one. This
fixes the ipfilter build with -fno-common.
-fno-common will become the default in GCC10/LLVM11.
MFC after: 3 days
line and auth_level's redefinitions are just extraneous
telnetd will #define extern and then include ext.h to allocate storage for
all of these extern'd vars; however, two of them are actually defined in
libtelnet instead. Instead of doing an #ifdef extern dance around those
function pointers, just add an EXTERN macro to make it easier to
differentiate by sight which ones will get allocated in globals.c and which
ones are defined elsewhere.
MFC after: 3 days
Most of these were already properly declared and defined elsewhere, this is
effectively just a minor cleanup that fixes the -fno-common build.
-fno-common will become the default in GCC10/LLVM11.
MFC after: 3 days
Compiling with -fno-common complains as this header's included in multiple
compilation units. In fact, the proper definition of dwarf2_loc_mark_labels
already exists in dwarf2dbg.c, so simply mark this declaration with extern.
[PowerPC]: Don't allow r0 as a target for LD_GOT_TPREL_L/32
Summary:
The linker is free to relax this (relocation R_PPC_GOT_TPREL16)
against R_PPC_TLS, if it sees fit (initial exec to local exec). If r0
is used, this can generate execution-invalid code (converts to 'addi
%rX, %r0, FOO, which translates in PPC-lingo to li %rX, FOO). Forbid
this instead.
This fixes static binaries using locales on FreeBSD/powerpc (tested
on FreeBSD/powerpcspe).
Reviewed By: nemanjai
Differential Revision: https://reviews.llvm.org/D76662
Requested by: jhibbits
MFC after: 6 weeks
X-MFC-With: 358851
[PowerPC]: e500 target can't use lwsync, use msync instead
The e500 core has a silicon bug that triggers an illegal instruction
program trap on any sync other than msync. Other cores will typically
ignore illegal sync types, and the documentation even implies that
the 'illegal' bits are ignored.
Address this hardware deficiency by only using msync, like the PPC440.
Differential Revision: https://reviews.llvm.org/D76614
Requested by: jhibbits
MFC after: 6 weeks
X-MFC-With: 358851
Having kyua in the base system will simplify automated testing in CI and
eliminates bootstrapping issues on new platforms.
The build of kyua is controlled by WITH(OUT)_TESTS_SUPPORT.
Reviewed by: emaste
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24103
It is added an INTERNALLIB and not installed. It will be used by kyua.
This is a preparatory commit for D24103.
Reviewed by: emaste
Obtained from: CheriBSD
Sponsored by: DARPA
There is no reason for diep to ever be NULL, since in that case we would
simply be leaking memory.
CID: 1418801
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Previously objcopy (elfcopy) --add-sections inserted new sections before
.shstrtab, but omitted them if there was no .shstrtab.
Now, after processing existing sections add new sections if they were
not yet added.
PR: 241437
Reported by: arrowd
Submitted by: Tiger Gao <tig@FreeBSDFoundation.org>
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23571
Fix -Wdeprecated-copy-dtor and -Wdeprecated-dynamic-exception-spec
warnings.
Summary:
The former are like:
libcxx/include/typeinfo:322:11: warning: definition of implicit copy
constructor for 'bad_cast' is deprecated because it has a
user-declared destructor [-Wdeprecated-copy-dtor]
virtual ~bad_cast() _NOEXCEPT;
^
libcxx/include/typeinfo:344:11: note: in implicit copy constructor
for 'std::bad_cast' first required here
throw bad_cast();
^
Fix these by adding an explicitly defaulted copy constructor.
The latter are like:
libcxx/include/codecvt:105:37: warning: dynamic exception
specifications are deprecated [-Wdeprecated-dynamic-exception-spec]
virtual int do_encoding() const throw();
^~~~~~~
Fix these by using the _NOEXCEPT macro instead.
Reviewers: EricWF, mclow.lists, ldionne, #libc
Reviewed By: EricWF, #libc
Subscribers: dexonsmith, libcxx-commits
Tags: #libc
Differential Revision: https://reviews.llvm.org/D76150
This is because we use -Wsystem-headers during buildworld, and the two
warnings above are now triggered by default with clang 10, preventing
most C++ code from compiling without NO_WERROR.
Requested by: brooks
MFC after: 6 weeks
X-MFC-With: 358851
Differential Revision: https://reviews.freebsd.org/D24049
[EarlyCSE] avoid crashing when detecting min/max/abs patterns (PR41083)
As discussed in PR41083:
https://bugs.llvm.org/show_bug.cgi?id=41083
...we can assert/crash in EarlyCSE using the current hashing scheme
and instructions with flags.
ValueTracking's matchSelectPattern() may rely on overflow (nsw, etc)
or other flags when detecting patterns such as min/max/abs composed
of compare+select. But the value numbering / hashing mechanism used
by EarlyCSE intersects those flags to allow more CSE.
Several alternatives to solve this are discussed in the bug report.
This patch avoids the issue by doing simple matching of min/max/abs
patterns that never requires instruction flags. We give up some CSE
power because of that, but that is not expected to result in much
actual performance difference because InstCombine will canonicalize
these patterns when possible. It even has this comment for abs/nabs:
/// Canonicalize all these variants to 1 pattern.
/// This makes CSE more likely.
(And this patch adds PhaseOrdering tests to verify that the expected
transforms are still happening in the standard optimization
pipelines.
I left this code to use ValueTracking's "flavor" enum values, so we
don't have to change the callers' code. If we decide to go back to
using the ValueTracking call (by changing the hashing algorithm
instead), it should be obvious how to replace this chunk.
Differential Revision: https://reviews.llvm.org/D74285
This fixes an assertion when building the math/gsl port on PowerPC64.
Requested by: pkubja
MFC after: 6 weeks
X-MFC-With: 358851
[ELF][PPC32] Don't report "relocation refers to a discarded section"
for .got2
Similar to D63182 [ELF][PPC64] Don't report "relocation refers to a
discarded section" for .toc
Reviewed By: Bdragon28
Differential Revision: https://reviews.llvm.org/D75419
This is needed to fix compile errors when building for ppc32/lld10.
Requested by: bdragon
MFC after: 6 weeks
X-MFC-With: 358851
Differential Revision: https://reviews.freebsd.org/D24110
[ELF][PPC32] Fix canonical PLTs when the order does not match the PLT order
Reviewed By: Bdragon28
Differential Revision: https://reviews.llvm.org/D75394
This is needed to fix miscompiled canonical PLTs on ppc32/lld10.
Requested by: bdragon
MFC after: 6 weeks
X-MFC-With: 358851
Differential Revision: https://reviews.freebsd.org/D24109
autofs was introduced with FreeBSD 10.1 and is the supported method for
automounting filesystems. As of r296194 the amd man page claimed that it
is deprecated. Remove it from base now; the sysutils/am-utils port is
still available if necessary.
Discussed with: cy
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Reland r374450 with Richard Smith's comments and test fixed.
The behavior from the original patch has changed, since we're no
longer allowing LLVM to just ignore the alignment. Instead, we're
just assuming the maximum possible alignment.
Differential Revision: https://reviews.llvm.org/D68824
llvm-svn: 374562
This fixes 'Assertion failed: (Alignment != 0 && "Invalid Alignment"),
function CreateAlignmentAssumption', when building recent versions of
v8, which invoke __builtin_assume_aligned() with its alignment argument
set to 4GiB or more.
Clang will now report a warning, and show the maximum possible alignment
instead, e.g.:
huge-align.cpp:1:27: warning: requested alignment must be 536870912 bytes or smaller; maximum alignment assumed [-Wbuiltin-assume-aligned-alignment]
void *f(void *g) { return __builtin_assume_aligned(g, 4294967296); }
^ ~~~~~~~~~~
Upstream PR: https://bugs.llvm.org/show_bug.cgi?id=43839
Reported by: cem
MFC after: 3 days
Previously _libelf_cvt_NOTE_tom (to host) returned false if a note's
namesz + descsz exceeded the buffer size, while _libelf_cvt_NOTE_tof
(to file) silently truncated. Return false in the latter case too.
Sponsored by: The FreeBSD Foundation
stand/i386 boot:
Revert upstream lld r371957 (git commit 06bb7dfbd) by Fangrui Song:
[ELF] Map the ELF header at imageBase
If there is no readonly section, we map:
* The ELF header at imageBase+maxPageSize
* Program headers at imageBase+maxPageSize+sizeof(Ehdr)
* The first section .text at imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers)
Due to the interaction between Writer<ELFT>::fixSectionAlignments and
LinkerScript::allocateHeaders,
`alignDown(p_vaddr(R PT_LOAD)) = alignDown(p_vaddr(RX PT_LOAD))`.
The RX PT_LOAD will override the R PT_LOAD at runtime, which is not ideal:
```
// PHDR at 0x401034, should be 0x400034
PHDR 0x000034 0x00401034 0x00401034 0x000a0 0x000a0 R 0x4
// R PT_LOAD contains just Ehdr and program headers.
// At 0x401000, should be 0x400000
LOAD 0x000000 0x00401000 0x00401000 0x000d4 0x000d4 R 0x1000
LOAD 0x0000d4 0x004010d4 0x004010d4 0x00001 0x00001 R E 0x1000
```
* createPhdrs allocates the headers to the R PT_LOAD.
* fixSectionAlignments assigns `imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers)` (formula: `alignTo(dot, maxPageSize) + dot % config->maxPageSize`) to addrExpr of .text
* allocateHeaders computes the minimum address among SHF_ALLOC sections, i.e. addr(.text)
* allocateHeaders sets address of ELF header to `addr(.text)-sizeof(Ehdr)-sizeof(program headers) = imageBase+maxPageSize`
The main observation is that when the SECTIONS command is not used, we
don't have to call allocateHeaders. This requires an assumption that
the presence of PT_PHDR and addresses of headers can be decided
regardless of address information.
This may seem natural because dot is not manipulated by a linker script.
The other thing is that we have to drop the special rule for -T<section>
in `getInitialDot`. If -Ttext is smaller than the image base, the headers
will not be allocated with the old behavior (allocateHeaders is called)
but always allocated with the new behavior.
The behavior change is not a problem. Whether and where headers are
allocated can vary among linkers, or ld.bfd across different versions
(--enable-separate-code or not). It is thus advised to use a linker
script with the PHDRS command to have a consistent behavior across
linkers. If PT_PHDR is needed, an explicit --image-base can be a simpler
alternative.
Differential Revision: https://reviews.llvm.org/D67325
llvm-svn: 371957
Previously corrupt note namesz or descsz (perhaps caused by readelf's
current lack of endian support for notes) resulted in a crash. Check
that namesz and descsz do not extend beyond the end of the buffer before
trying to access name and desc data.
Reported by: jhb
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
This will be used to tag binaries that require W+X mappings, in advance
of the ability to prevent W^X in mmap/mprotect.
There is still some discussion about the flag's name, but the ABI won't
change even if the name does (as kib pointed out in the review).
Reviewed by: csjp, kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23909
From r349609 (PROTMAX_DISABLE) and r354790 (STKGAP_DISABLE). Commited
upstream (in a slightly different form) as r3831.
Sponsored by: The FreeBSD Foundation
Now that we no longer have GCC 4.2.1 in the tree and can assume FreeBSD
is being built with a C++11 compiler available, we can use BSDL dtc
unconditionally and retire the GPL dtc.
GPL dtc now has FreeBSD CI support via Cirrus-CI to help ensure it
continues to build/work on FreeBSD and is available in the ports tree
if needed.
The copy of (copyfree licensed) libfdt that we actually use is in
sys/contrib/libfdt so the extra copy under contrib/dtc/libfdt can be
removed along with the rest of the GPL dtc.
Reviewed by: kevans, ian, imp, manu, theraven
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23192
LLVM's libunwind is used on all FreeBSD-supported CPU architectures and
is a required component.
Reviewed by: brooks (earlier)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23123
It is specifically mentioned in the manual page. Note it has no functional
change in reality because DH_set0_pqg() cannot fail when both p and g are
not NULL.
[RISCV] Lower llvm.trap and llvm.debugtrap
Summary:
Until this commit, these have lowered to a call to abort().
`llvm.trap()` now lowers to `unimp`, which should trap on all systems.
`llvm.debugtrap()` now lowers to `ebreak`, which is exactly what this
instruction is for.
Reviewers: asb, luismarques
Reviewed By: asb
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69390
This fixes miscompilation resulting in linking failures with
INVARIANTS disabled.
Reviewed by: dim
Differential Revision: https://reviews.freebsd.org/D23857
ftp(1) from vendor/tnftp always tried the following for
every TCP connection:
1. Get the current buffer length of SO_SNDBUF and SO_RCVBUF
by getsockopt(2).
2. Invoke setsockopt(2) to set them to the same values
after checking if they are in a range between 8 KiB to 8 MiB.
This behavior broke dynamic buffer sizing enabled by
default (net.inet.tcp.{recv,send}buf_auto sysctls) and
led to a very poor transfer rate. The fetch(1) utility
does not have this problem.
This change prevents SO_SNDBUF and SO_RCVBUF from configuring
when the buffer auto-sizing is enabled unless the buffer sizes are
explicitly specified.
PR: 240827
Spotted by: Yuichiro NAITO
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D23732
OpenSSL 1.1 API patch for sendmail had a bug which
prevented sm_RSA_generate_key() function from working.
This function is used to generate a temporary RSA key
for a shared memory region used for TLS processing.
Note that 12.0 and 12.1-RELEASE include this bug.
This affects only if SM_CONF_SHM compile-time
option (enabled by default) and SharedMemoryKey
run-time option (not enabled by default) in a .cf file are
specified. The latter corresponds to confSHARED_MEMORY_KEY in
a .mc file.
PR: 242861
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D23734
[MC][ARM] Resolve some pcrel fixups at assembly time (PR44929)
MC currently does not emit these relocation types, and lld does not
handle them. Add FKF_Constant as a work-around of some ARM code after
D72197. Eventually we probably should implement these relocation
types.
By Fangrui Song!
Differential revision: https://reviews.llvm.org/D72892
This re-enables using the arm 'adr' pseudo instruction on global symbols
again. It was broken as a side-effect of upstream commit 2bfee35cb,
which lead to "error: unsupported relocation on symbol" when assembling
such constructs, which are used in e.g. sys/arm/arm/locore-v[46].S.
PR: 244251
files. This allows for loading, during the same invocation of ippool, of
multiple sources of input using multiple tools to concurrently maintain the
files such as fail2ban, macro preprocessors, and manually.
MFC after: 1 week
Among the changes from before:
- Add support for extended colors on widechar version
- Enable ncurses extended functions
- Enable version 2 of the extended mouse support
- Enable SCREEN extensions
Modification that differs from upstream:
- _nc_delink_entries used to be exposed and was turn static,
turn it back as dynamic to not break abi
- Adapt our old termcap.c to modern ncurses
MFC after: 3 weeks
Restore functionality of --sysroot on FreeBSD after b18cb9c47
After b18cb9c47, clang would sometimes prefer the host C++ includes
(e.g. in /usr/include/c++/v1) before those specified via --sysroot.
While this behavior may be desirable on Linux, it is not so on
FreeBSD, where we make extensive use of --sysroot during the build of
the base system. In that case, clang must *not* search outside the
sysroot, except for its own internal headers.
Add an override addLibCxxIncludePaths() to restore the old behavior,
which is to simply append /usr/include/c++/v1 to the specified
sysroot. While here, apply clang-format to the FreeBSD specific
toolchain files.
Fixes PR44923.
Fix a -Wbitwise-conditional-parentheses warning in
_LIBUNWIND_ARM_EHABI libunwind builds
```
src/UnwindCursor.hpp:1344:51: error: operator '?:' has lower precedence than '|'; '|' will be evaluated first [-Werror,-Wbitwise-conditional-parentheses]
_info.flags = isSingleWordEHT ? 1 : 0 | scope32 ? 0x2 : 0; // Use enum?
~~~~~~~~~~~ ^
src/UnwindCursor.hpp:1344:51: note: place parentheses around the '|' expression to silence this warning
_info.flags = isSingleWordEHT ? 1 : 0 | scope32 ? 0x2 : 0; // Use enum?
^
( )
src/UnwindCursor.hpp:1344:51: note: place parentheses around the '?:' expression to evaluate it first
_info.flags = isSingleWordEHT ? 1 : 0 | scope32 ? 0x2 : 0; // Use enum?
^
( )
```
But `0 |` is a no-op for either of those two interpretations, so I
think what was meant here was
```
_info.flags = (isSingleWordEHT ? 1 : 0) | (scope32 ? 0x2 : 0); // Use enum?
```
Previously, if `isSingleWordEHT` was set, bit 2 would never be set.
Now it is. From what I can tell, the only thing that checks these
bitmask is ProcessDescriptors in Unwind-EHABI.cpp, and that only
cares about bit 1, so in practice this shouldn't have much of an
effect.
Differential Revision: https://reviews.llvm.org/D73890
This fixes the above errors when building libunwind for arm variants.
The hack in question is intended to workaround seemingly bogus #line markers
in cpp output. As far as I can tell, llvm cpp doesn't do this by default, so
there's no reason to add -P.
In our /bin/sh, the main incantation should be placed in a sub-shell in
order to properly pipe the output to fgrep.
The main motivation for this change is admittedly to stop emitting the noise
about clang not being gcc in make -s buildworld
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22952
Presumably a bool definition is obtained via header contamination on
FreeBSD-CURRENT. Found while trying to upstream FreeBSD addr2line
changes - the FreeBSD 11.2 CI build failed there.
Reported by: Cirrus-CI, upstream ELF Tool Chain
MFC with: r357844
Sponsored by: The FreeBSD Foundation
Update libarchive to 3.4.2
Relevant vendor changes:
PR #1289: atomic extraction support (bsdtar -x --safe-writes)
PR #1308: big endian fix for UTF16 support in LHA reader
PR #1326: reject RAR5 files that declare invalid header flags
Issue #987: fix support 7z archive entries with Delta filter
Issue #1317: fix compression output buffer handling in XAR writer
Issue #1319: fix uname or gname longer than 32 characters in pax writer
Issue #1325: fix use after free when archiving hardlinks in ISO9660 or XAR
Use localtime_r() and gmtime_r() instead of localtime() and gmtime()
X-MFC-With: r356212,r356365,r356416
MFC after: 1 week
Libarchive 3.4.2
Relevant vendor changes:
PR #1289: atomic extraction support (bsdtar -x --safe-writes)
PR #1308: big endian fix for UTF16 support in LHA reader
PR #1326: reject RAR5 files that declare invalid header flags
Issue #987: fix support 7z archive entries with Delta filter
Issue #1317: fix compression output buffer handling in XAR writer
Issue #1319: fix uname or gname longer than 32 characters in pax writer
Issue #1325: fix use after free when archiving hardlinks in ISO9660 or XAR
Use localtime_r() and gmtime_r() instead of localtime() and gmtime()
The version that ended upstream was ultimately slightly different than the
version committed here; notably, statvfs() is used but it's redefined
appropriately to statfs() on FreeBSD since we don't provide the fstypename
for the former interface.
The revokex test does not work when the scratch directory is created on NFS.
Given the nature of NFS, it likely can never work without looking like a
security hole since O_SEARCH would rely on the server knowing that the
directory did have +x at the time of open and that it's OK for it to have
been revoked based on POSIX specification for O_SEARCH.
This does mean that O_SEARCH is only partially functional on NFS in general,
but I suspect the execute bit getting revoked in the process is likely not
common.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D23573
The RCSID data was wrong, so this is effectively a record-only merge
with correction of said data. No further changes should be needed in this
area, as we've now upstreamed our local changes to this specific test.
In FreeBSD's O_SEARCH implementation, O_SEARCH in conjunction with O_RDWR or
O_WRONLY is explicitly rejected. In this case, O_RDWR was not necessary
anyways as the file will get created with or without it.
This was submitted upstream as misc/54940 and committed in rev 1.8 of the
file.
Coverity correctly reports this as a resource leak. It's an admittedly minor
one, but plug it anyways.
This has been submitted upstream as misc/54939.
CID: 978288
The caller of dump_object() is responsible for opening the file, let it
be responsible for closing too.
CID: 1411588
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
The callers only check whether the returned pointer is non-NULL, so this
was harmless in practice, but change the return value to guard against
the issue.
CID: 1411597
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
We should really create the output file in the same directory as the
destination file so that rename() works. This will be done in a future
change as part of some work to run in capability mode.
CID: 1262523
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
The code clearly meant to resize the buffer in the case where a section
was backed by multiple data descriptors.
In practice this shouldn't have been a problem since libelf would return
a single data descriptor for each section in a newly opened file.
CID: 1262522
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
All callers pass a non-NULL pointer, and otherwise it was possible to
leak memory if the abbrev was not added to a CU.
CID: 1193365
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
All callers of _dwarf_add_expr() and _dwarf_expr_into_block() pass a
non-NULL expr pointer, and these functions assume that expr is non-NULL
anyway.
CID: 1193305, 1193306
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
sqlite3-3.30.1 (3300100), as it causes svnlite segfaults on PowerPC,
resulting in corruption.
Reported by: Mark Millard <marklmi at yahoo.com>
Francis Little <oggy at farscape.co.uk>
Previously, addr2line would sequentially search all CUs for each input
address. For some uses, notably syzkaller's code coverage map generator,
this was extremely slow. Add a CU cache into which entries are added
following a successful lookup, and search the cache before falling back
to a scan. When translating a large number of addresses this yields
slightly better performance than GNU addr2line.
Garbage-collect an unused hash table which appears to have been intended
for the same purpose. A hash table doesn't seem particularly suitable
since each CU spans a range of addresses.
Submitted by: Tiger Gao <tig@freebsdfoundation.org>
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23418
O_SEARCH is defined by POSIX [0] to open a directory for searching, skipping
permissions checks on the directory itself after the initial open(). This is
close to the semantics we've historically applied for O_EXEC on a directory,
which is UB according to POSIX. Conveniently, O_SEARCH on a file is also
explicitly undefined behavior according to POSIX, so O_EXEC would be a fine
choice. The spec goes on to state that O_SEARCH and O_EXEC need not be
distinct values, but they're not defined to be the same value.
This was pointed out as an incompatibility with other systems that had made
its way into libarchive, which had assumed that O_EXEC was an alias for
O_SEARCH.
This defines compatibility O_SEARCH/FSEARCH (equivalent to O_EXEC and FEXEC
respectively) and expands our UB for O_EXEC on a directory. O_EXEC on a
directory is checked in vn_open_vnode already, so for completeness we add a
NOEXECCHECK when O_SEARCH has been specified on the top-level fd and do not
re-check that when descending in namei.
[0] https://pubs.opengroup.org/onlinepubs/9699919799/
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D23247
This construction used some relatively slow design involving SHA2; even if
it were fed real entropy (unclear; external to the design), it did not
handle fork in a safe way, and it was difficult to audit for correctness.
So just rip it out and use the very simple and known-correct arc4random(3)
interface in its place.
In apr_vformatter, the variable buf was declared inside a limited scope
region, but a pointer to it is leaked outside of that region and used
later. This is undefined behavior. Fix by moving the buf variable to
function scope.
Reported by: Coverity
CID: 1192541
[ELF] Map the ELF header at imageBase
If there is no readonly section, we map:
* The ELF header at imageBase+maxPageSize
* Program headers at imageBase+maxPageSize+sizeof(Ehdr)
* The first section .text at imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers)
Due to the interaction between Writer<ELFT>::fixSectionAlignments and
LinkerScript::allocateHeaders,
`alignDown(p_vaddr(R PT_LOAD)) = alignDown(p_vaddr(RX PT_LOAD))`.
The RX PT_LOAD will override the R PT_LOAD at runtime, which is not ideal:
```
// PHDR at 0x401034, should be 0x400034
PHDR 0x000034 0x00401034 0x00401034 0x000a0 0x000a0 R 0x4
// R PT_LOAD contains just Ehdr and program headers.
// At 0x401000, should be 0x400000
LOAD 0x000000 0x00401000 0x00401000 0x000d4 0x000d4 R 0x1000
LOAD 0x0000d4 0x004010d4 0x004010d4 0x00001 0x00001 R E 0x1000
```
* createPhdrs allocates the headers to the R PT_LOAD.
* fixSectionAlignments assigns `imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers)` (formula: `alignTo(dot, maxPageSize) + dot % config->maxPageSize`) to addrExpr of .text
* allocateHeaders computes the minimum address among SHF_ALLOC sections, i.e. addr(.text)
* allocateHeaders sets address of ELF header to `addr(.text)-sizeof(Ehdr)-sizeof(program headers) = imageBase+maxPageSize`
The main observation is that when the SECTIONS command is not used, we
don't have to call allocateHeaders. This requires an assumption that
the presence of PT_PHDR and addresses of headers can be decided
regardless of address information.
This may seem natural because dot is not manipulated by a linker script.
The other thing is that we have to drop the special rule for -T<section>
in `getInitialDot`. If -Ttext is smaller than the image base, the headers
will not be allocated with the old behavior (allocateHeaders is called)
but always allocated with the new behavior.
The behavior change is not a problem. Whether and where headers are
allocated can vary among linkers, or ld.bfd across different versions
(--enable-separate-code or not). It is thus advised to use a linker
script with the PHDRS command to have a consistent behavior across
linkers. If PT_PHDR is needed, an explicit --image-base can be a simpler
alternative.
Differential Revision: https://reviews.llvm.org/D67325
llvm-svn: 371957
This causes "ld: error: output file too large: 18446744073707016908
bytes" when linking our loader_4th and loader_lua. Clearly, something
is wrong when using -Ttext 0x0: I will file an upstream bug report for
this.
Fix the following -Werror warning from clang 10.0.0 in binutils:
contrib/binutils/bfd/peicode.h:1356:3: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation]
if (efi)
^
contrib/binutils/bfd/peicode.h:1353:8: note: previous statement is here
if (pe_arch (bfd_target_efi_arch (*target_ptr)) != arch)
^
contrib/binutils/bfd/peicode.h:1370:3: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation]
if (!efi)
^
contrib/binutils/bfd/peicode.h:1367:8: note: previous statement is here
if (pe_arch (bfd_target_pei_arch (*target_ptr)) != arch)
^
MFC after: 3 days
contrib/binutils/bfd/peicode.h:1356:3: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation]
if (efi)
^
contrib/binutils/bfd/peicode.h:1353:8: note: previous statement is here
if (pe_arch (bfd_target_efi_arch (*target_ptr)) != arch)
^
contrib/binutils/bfd/peicode.h:1370:3: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation]
if (!efi)
^
contrib/binutils/bfd/peicode.h:1367:8: note: previous statement is here
if (pe_arch (bfd_target_pei_arch (*target_ptr)) != arch)
^
MFC after: 3 days
The current code clearly intended for these to be octal based on the values
used, but the octal prefix was forgotten. Add it now for correctness, but
note that we don't currently execute these tests.
This has been submitted upstream as misc/54902, so I've omitted the standard
FreeBSD markers that we tend to put into netbsd-tests for upstream-candidate
identification.
Reviewed by: ngie
MFC after: 3 days
- Two changes to encoder options:
encoder options may use plus or colon, but only one
encoder names can be specified as "@name"
This results in the syntax:
df --libxo @csv:no-header:leafs=name.available-blocks /
- If xo_set_program is called before xo_parse_args, honor the requested value
- add xo_errorn* function; repair newline-adding-on-xo_error bug
- test programs now use fixed name, since linux libtool prefixs "lt-"
- Fix "horse butt" comment in source code
- update test cases
PR: 242686
Add 8548 CPU definition and attributes
8548 CPU is GCC's name for the e500v2, so accept this in clang. The
e500v2 doesn't support lwsync, so define __NO_LWSYNC__ for this as
well, as GCC does.
Differential Revision: https://reviews.llvm.org/D67787
Merge commit ff0311c4b from llvm git (by Justin Hibbits):
[PowerPC]: Add powerpcspe target triple subarch component
Summary:
This allows the use of '-target powerpcspe-unknown-linux-gnu' or
'powerpcspe-unknown-freebsd' to be used, instead of '-target
powerpc-unknown-linux-gnu -mspe'.
Reviewed By: dim
Differential Revision: https://reviews.llvm.org/D72014
Merge commit ba91dffaf from llvm git (by Fangrui Song):
[Driver][PowerPC] Move powerpcspe logic from cc1 to Driver
Follow-up of D72014. It is more appropriate to use a target feature
instead of a SubTypeArch to express the difference.
Reviewed By: #powerpc, jhibbits
Differential Revision: https://reviews.llvm.org/D72433
commit 36eedfcb3 from llvm git (by Justin Hibbits):
[PowerPC] Fix powerpcspe subtarget enablement in llvm backend
Summary:
As currently written, -target powerpcspe will enable SPE regardless
of disabling the feature later on in the command line. Instead,
change this to just set a default CPU to 'e500' instead of a generic
CPU.
As part of this, add FeatureSPE to the e500 definition.
Reviewed By: MaskRay
Differential Revision: https://reviews.llvm.org/D72673
These are needed to unbreak the build for powerpcspe.
Requested by: jhibbits
MFC after: 1 week
[MIPS][ELF] Use PC-relative relocations in .eh_frame when possible
When compiling position-independent executables, we now use
DW_EH_PE_pcrel | DW_EH_PE_sdata4. However, the MIPS ABI does not define a
64-bit PC-relative ELF relocation so we cannot use sdata8 for the large
code model case. When using the large code model, we fall back to the
previous behaviour of generating absolute relocations.
With this change clang-generated .o files can be linked by LLD without
having to pass -Wl,-z,notext (which creates text relocations).
This is simpler than the approach used by ld.bfd, which rewrites the
.eh_frame section to convert absolute relocations into relative references.
I saw in D13104 that apparently ld.bfd did not accept pc-relative relocations
for MIPS ouput at some point. However, I also checked that recent ld.bfd
can process the clang-generated .o files so this no longer seems true.
Reviewed By: atanasyan
Differential Revision: https://reviews.llvm.org/D72228
Merge commit 8e8ccf47 from llvm git (by me)
[MIPS] Don't emit R_(MICRO)MIPS_JALR relocations against data symbols
The R_(MICRO)MIPS_JALR optimization only works when used against functions.
Using the relocation against a data symbol (e.g. function pointer) will
cause some linkers that don't ignore the hint in this case (e.g. LLD prior
to commit 5bab291) to generate a relative branch to the data symbol
which crashes at run time. Before this patch, LLVM was erroneously emitting
these relocations against local-dynamic TLS function pointers and global
function pointers with internal visibility.
Reviewers: atanasyan, jrtc27, vstefanovic
Reviewed By: atanasyan
Differential Revision: https://reviews.llvm.org/D72571
These two changes should allow using lld for MIPS64 (and maybe also MIPS32)
by default.
The second commit is not strictly necessary for clang+lld since LLD9 will
not perform the R_MIPS_JALR optimization (it was only added for 10) but it
is probably required in order to use recent ld.bfd.
Reviewed By: dim, emaste
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23203
[mips] Use less registers to load address of TargetExternalSymbol
There is no pattern matched `add hi, (MipsLo texternalsym)`. As a
result, loading an address of 32-bit symbol requires two registers
and one more additional instruction:
```
addiu $1, $zero, %lo(foo)
lui $2, %hi(foo)
addu $25, $2, $1
```
This patch adds the missed pattern and enables generation more
effective set of instructions:
```
lui $1, %hi(foo)
addiu $25, $1, %lo(foo)
```
Differential Revision: https://reviews.llvm.org/D66771
llvm-svn: 370196
Merge commit 59bb3609f from llvm git (by Simon Atanasyan):
[mips] Fix 64-bit address loading in case of applying 32-bit mask to
the result
If result of 64-bit address loading combines with 32-bit mask, LLVM
tries to optimize the code and remove "redundant" loading of upper
32-bits of the address. It leads to incorrect code on MIPS64 targets.
MIPS backend creates the following chain of commands to load 64-bit
address in the `MipsTargetLowering::getAddrNonPICSym64` method:
```
(add (shl (add (shl (add %highest(sym), %higher(sym)),
16),
%hi(sym)),
16),
%lo(%sym))
```
If the mask presents, LLVM decides to optimize the chain of commands.
It really does not make sense to load upper 32-bits because the
0x0fffffff mask anyway clears them. After removing redundant commands
we get this chain:
```
(add (shl (%hi(sym), 16), %lo(%sym))
```
There is no patterns matched `(MipsHi (i64 symbol))`. Due a bug in
`SYM_32` predicate definition, backend incorrectly selects a pattern
for a 32-bit symbols and uses the `lui` instruction for loading
`%hi(sym)`.
As a result we get incorrect set of instructions with unnecessary
16-bit left shifting:
```
lui at,0x0
R_MIPS_HI16 foo
dsll at,at,0x10
daddiu at,at,0
R_MIPS_LO16 foo
```
This patch resolves two problems:
- Fix `SYM_32/SYM_64` predicates to prevent selection of patterns
dedicated to 32-bit symbols in case of using N64 ABI.
- Add missed patterns for 64-bit symbols for `%hi/%lo`.
Fix PR42736.
Differential Revision: https://reviews.llvm.org/D66228
llvm-svn: 370268
These two commits fix a miscompilation of the kernel for mips64, and
should allow clang to be used as the default compiler for mips64.
Requested by: arichards
MFC after: 3 days
config.h as a guide. In practice contributed software maintains a copy
of config.h within its build directory tree containing its Makefile.
usr.sbin/unbound is the home for its config.h.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22983
The patch is untested and is almost certainly insufficient. Per the
author's request, revert until someone with access to sparc64 hardware
can test and report.
sparc64 is the only architecture currently using the DWARF unwinder from
GCC 4.2.1. Old GCC and related libraries are being removed soon; absent
other changes sparc64 would be left with no unwinder when that happens.
Instead, commit these changes which should at least allow the LLVM
unwinder to build. Someone with access to the obolete sparc64 hardware
supported by FreeBSD will need to test the result.
PR: 233405
Submitted by: cem
[lld][RISCV] Use an e_flags of 0 if there are only binary input files.
Summary:
If none of the input files are ELF object files (for example, when
generating an object file from a single binary input file via "-b
binary"), use a fallback value for the ELF header flags instead of
crashing with an assertion failure.
Reviewers: MaskRay, ruiu, espindola
Reviewed By: MaskRay, ruiu
Subscribers: kevans, grimar, emaste, arichardson, asb, rbar,
johnrusso, simoncook, sabuasal, niosHD, kito-cheng, shiva0217,
zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o,
rkruppe, PkmX, jocewei, psnobl, benna, Jim, lenary, s.egerton,
pzheng, sameer.abuasal, apazos, luismarques, llvm-commits, jrtc27
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71101
This is a prerequisite for building and linking hard- and soft-float
riscv worlds with clang and lld.
Requested by: jhb
MFC after: 1 week
X-MFC-With: r353358
[RISCV] Handle fcopysign(f32, f64) and fcopysign(f64, f32)
Summary: Adds tablegen patterns to explicitly handle fcopysign where
the magnitude and sign arguments have different types, due to the
sign value casts being removed the by DAGCombiner. Support for RV32IF
follows in a separate commit. Adds tests for all relevant scenarios
except RV32IF.
Reviewers: lenary
Reviewed By: lenary
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D70678
This is a prerequisite for building and linking hard- and soft-float
riscv worlds with clang and lld.
Requested by: jhb
MFC after: 1 week
X-MFC-With: r353358
