Commit Graph

222 Commits

Author SHA1 Message Date
Jordan Rupprecht ca6d35b2a9 NFC: Test commit access
Testing commit access from a new machine, so using this as an opportunity to revert my old test access commit (r336006) that I never cleaned up.

llvm-svn: 339899
2018-08-16 16:55:07 +00:00
Stefan Maksimovic afc9f8ab6d [libunwind][mips] Include gcc_s for linkage
When compiling with optimizations, mips requires various helper routines(__ashldi3 and the like) contained in libgcc_s.
Conditionally include libgcc_s in the set of libraries to be linked to.

Differential Revision: https://reviews.llvm.org/D50243

llvm-svn: 339878
2018-08-16 13:40:16 +00:00
Stefan Maksimovic fe50950dac [libunwind][mips] Guard accumulator registers
Mipsr6 does not possess HI and LO accumulator registers, adjust validRegister functions to respect that.

Differential Revision: https://reviews.llvm.org/D50244

llvm-svn: 339849
2018-08-16 08:49:50 +00:00
Stefan Maksimovic 944677cd28 [libunwind][mips] Modify the __mips_fpr macro check
The __mips_fpr macro can take the value of 0 as well, change to account for that case.

Differential Revision: https://reviews.llvm.org/D50245

llvm-svn: 339848
2018-08-16 08:47:43 +00:00
Martin Storsjo f128f27874 [cmake] Add MINGW_LIBRARIES to the linker flags
This is essential when building with -nodefaultlibs.

In some CMake versions (noticed in 3.5.1), the same libraries are
picked up from CMAKE_REQUIRED_LIBRARIES in some exceptional situations
(if CXX probing failed, due to libc++ not being built yet, the libraries
from CMAKE_REQUIRED_LIBRARIES are used for linking the target library),
but not at all in other newer CMake versions (3.10).

This is similar to what already is done in libcxxabi in SVN r302760
and libcxx in SVN r312498.

Differential Revision: https://reviews.llvm.org/D50663

llvm-svn: 339642
2018-08-14 06:13:36 +00:00
Charles Davis b006dafbef Remove unneeded preprocessor condition.
llvm-svn: 339259
2018-08-08 15:18:22 +00:00
Charles Davis 06acf1f638 [libunwind][include] Add SEH declarations to <unwind.h>.
Summary:
Make the `_Unwind_Exception` struct correct under SEH. Add a
declaration of `_GCC_specific_handler()`, which is used by SEH versions
of Itanium personality handlers to do common setup. Roughly corresponds
to Clang's D50380.

Reviewers: mstorsjo, rnk, compnerd, smeenai

Subscribers: christof, chrib, cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D50414

llvm-svn: 339258
2018-08-08 15:18:20 +00:00
Charles Davis 8284d328ba [libunwind] Fix pointer-to-integer cast warnings on LLP64.
Summary:
`long` is too short on LLP64. We have to use `intptr_t` to
avoid truncating pointers.

Reviewers: mstorsjo, rnk, compnerd, smeenai

Subscribers: christof, cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D50412

llvm-svn: 339217
2018-08-08 04:21:24 +00:00
Martin Storsjo 5d108d260f [CMake] Allow building standalone without any llvm-config available
This is the same as libcxxabi/libcxx do.

Differential Revision: https://reviews.llvm.org/D50135

llvm-svn: 338819
2018-08-03 05:51:31 +00:00
Hans Wennborg d541521225 Bump version number to 8.0.0svn
llvm-svn: 338570
2018-08-01 15:22:27 +00:00
Hans Wennborg a760fe6484 Update docs version and clear release notes after 8.0.0 version bump
llvm-svn: 338561
2018-08-01 14:14:09 +00:00
Petr Hosek 641a29df6d [CMake] Include CMakeDependentOption in libunwind
This should resolve the breakage introduced in r337867 which introduced
the use of cmake_dependent_option without include the necessary file.

llvm-svn: 337868
2018-07-24 23:42:51 +00:00
Petr Hosek 4a1e14ea78 [CMake] Option to control whether shared/static library is installed
Currently it's only possible to control whether shared or static library
build of libc++, libc++abi and libunwind is enabled or disabled and
whether to install everything we've built or not. However, it'd be
useful to have more fine grained control, e.g. when static libraries are
merged together into libc++.a we don't need to install libc++abi.a and
libunwind.a. This change adds this option.

Differential Revision: https://reviews.llvm.org/D49573

llvm-svn: 337867
2018-07-24 23:27:51 +00:00
Joerg Sonnenberger d0166a0a93 The semantics of DW_CFA_GNU_args_size have changed subtile over the
years. Adopt the new convention that it is call-site specific and that
it should be applied before moving the IP by personality routines, but
not during normal unwinding.

Differential Revision: https://reviews.llvm.org/D38680

llvm-svn: 337312
2018-07-17 19:00:51 +00:00
Petr Hosek 6aae861e0e [CMake] Set per-runtime library directory suffix in runtimes build
Do not use LLVM_RUNTIMES_LIBDIR_SUFFIX variable which is an internal
variable used by the runtimes build from individual runtimes, instead
set per-runtime librarhy directory suffix variable which is necessary
for the sanitized runtimes build to install libraries into correct
location.

Differential Revision: https://reviews.llvm.org/D49121

llvm-svn: 336713
2018-07-10 19:13:33 +00:00
Jordan Rupprecht 2bd91dbd62 Introduce a separate preprocessor macro, _LIBUNWIND_USE_DLADDR, for directly controlling a dependency on dladdr(). This will allow us to use libunwind without adding a libdl dependency.
Reviewers: saugustine

Subscribers: christof, chrib, cfe-commits, echristo

Differential Revision: https://reviews.llvm.org/D48733

llvm-svn: 336014
2018-06-29 20:41:50 +00:00
Eric Christopher 45a05a5457 Revert "Revert "Support for multiarch runtimes layout""
This reverts commit r336005 that was accidentally committed.

llvm-svn: 336012
2018-06-29 20:27:40 +00:00
Jordan Rupprecht 7bb861e83b Add a blank line to docs/README.txt test commit access
Subscribers: christof, cfe-commits

Differential Revision: https://reviews.llvm.org/D48785

llvm-svn: 336006
2018-06-29 19:05:21 +00:00
Jordan Rupprecht 2ee550c6b3 Revert "Support for multiarch runtimes layout"
This reverts commit 0c7cea3c0c6338b99e30c13201365a3dd4edc6f4.

llvm-svn: 336005
2018-06-29 19:05:20 +00:00
Petr Hosek 887f26d470 Support for multiarch runtimes layout
This change adds a support for multiarch style runtimes layout, so in
addition to the existing layout where runtimes get installed to:

lib/clang/$version/lib/$os

Clang now allows runtimes to be installed to:

lib/clang/$version/$target/lib

This also includes libc++, libc++abi and libunwind; today those are
assumed to be in Clang library directory built for host, with the
new layout it is possible to install libc++, libc++abi and libunwind
into the runtime directory built for different targets.

The use of new layout is enabled by setting the
LLVM_ENABLE_RUNTIME_TARGET_DIR CMake variable and is supported by both
projects and runtimes layouts. The runtimes CMake build has been further
modified to use the new layout when building runtimes for multiple
targets.

Differential Revision: https://reviews.llvm.org/D45604

llvm-svn: 335809
2018-06-28 03:11:52 +00:00
Martin Storsjo faf9589fae [CMake] Convert paths to the right form in standalone builds on Windows
The paths output from llvm-config --cmakedir and from clang
--print-libgcc-file-name can contain backslashes, while CMake
can't handle the paths in this form.

This matches what compiler-rt already does (since SVN r203789
and r293195).

Differential Revision: https://reviews.llvm.org/D48353

llvm-svn: 335169
2018-06-20 20:53:19 +00:00
Paul Robinson 7555c589af Update copyright year to 2018.
llvm-svn: 334936
2018-06-18 12:22:17 +00:00
whitequark 4f9c59f863 [OR1K] Add the EPCR special-purpose register to register state.
This makes it possible to unwind hardware exception stack frames,
which necessarily save every register and so need an extra column
for storing the return address. CFI for the exception handler could
then look as follows:

.globl exception_vector
exception_vector:
    .cfi_startproc
    .cfi_signal_frame
    .cfi_return_column 32
    l.addi  r1, r1, -0x100
    .cfi_def_cfa_offset 0x100
    l.sw    0x00(r1), r2
    .cfi_offset 2, 0x00-0x100
    l.sw    0x04(r1), r3
    .cfi_offset 3, 0x04-0x100
    l.sw    0x08(r1), r4
    .cfi_offset 4, 0x08-0x100
    l.mfspr r3, r0, SPR_EPCR_BASE
    l.sw    0x78(r1), r3
    .cfi_offset 32, 0x78-0x100
    l.jal   exception_handler
     l.nop
    l.lwz   r2, 0x00(r1)
    l.lwz   r3, 0x04(r1)
    l.lwz   r4, 0x08(r1)
    l.jr    r9
     l.nop
    .cfi_endproc

This register could, of course, also be accessed by the trace
callback or personality function, if so desired.

llvm-svn: 332513
2018-05-16 19:09:48 +00:00
whitequark 3f948cd79d [OR1K] Add a dedicated PC register to register state.
Before this commit, R9, the link register, was used as PC register.
However, a stack frame may have R9 not set to PC on entry, either
because it uses a custom calling convention, or, more likely,
because this is a signal or exception stack frame. Using R9 as
PC register made it impossible to unwind such frames.

All other architectures similarly use a dedicated PC register.

llvm-svn: 332512
2018-05-16 19:09:41 +00:00
John Baldwin c3f240f7dc [libunwind][MIPS] Support MIPS floating-point registers for hard-float ABIs.
Summary:
For MIPS ABIs with 64-bit floating point registers including newabi
and O32 with 64-bit floating point registers, just save and restore the
32 floating-point registers as doubles.

For O32 MIPS with 32-bit floating-point registers, save and restore the
individual floating-point registers as "plain" registers.  These registers
are encoded as floats rather than doubles, but the DWARF unwinder
assumes that floating-point registers are stored as doubles when reading
them from memory (via AddressSpace::getDouble()).  Treating the
registers as "normal" registers instead causes the DWARF unwinder to
fetch them from memory as a 32-bit register.  This does mean that for
O32 with 32-bit floating-point registers unw_get_fpreg() and
unw_set_fpreg() do not work.  One would have to use unw_get_reg()
and unw_set_reg() instead.  However, DWARF unwinding works
correctly as the DWARF CFI emits records for individual 32-bit
floating-point registers even when they are treated as doubles stored
in paired registers.  If the lack of unw_get/set_fpreg() becomes a pressing
need in the future for O32 MIPS we could add in special handling to
make it work.

Reviewers: sdardis, compnerd

Reviewed By: sdardis

Differential Revision: https://reviews.llvm.org/D41968

llvm-svn: 332414
2018-05-15 22:44:56 +00:00
Aaron Smith 596b0f03a0 [cmake] Remove duplicate command line options from build
CMAKE_CXX_FLAGS and CMAKE_C_FLAGS are added twice to the command line.
This causes the command line options to be doubled which works until
it doesn't as not all options can be specified twice. 

For example,

clang-cl foo.c /GS- /GS- -mllvm -small-loop-cost=1 -mllvm -small-loop-cost=1
clang (LLVM option parsing): for the -small-loop-cost option: may only occur zero or one times!

llvm-svn: 329340
2018-04-05 20:27:50 +00:00
Petr Hosek 2dcd1d0989 [CMake] Support for monorepo layout
Support finding libcxx sources in monorepo style layout.

Differential Revision: https://reviews.llvm.org/D45270

llvm-svn: 329212
2018-04-04 17:57:15 +00:00
John Baldwin 0594aee52f [libunwind][MIPS]: Add support for unwinding in N32 processes.
Summary:
N32 uses the same register context as N64.  However, N32 requires one
change to properly fetch addresses from registers stored in memory.
Since N32 is an ILP32 platform, getP() only fetches the first 32-bits
of a stored register.  For a big-endian platform this fetches the
upper 32-bits which will be zero.  To fix this, add a new
getRegister() method to AddressSpace which is responsible for
extracting the address stored in a register in memory.  This matches
getP() for all current ABIs except for N32 where it reads the 64-bit
register and returns the low 32-bits as an address.  The
DwarfInstructions::getSavedRegister() method uses
AddressSpace::getRegister() instead of AddressSpace::getP().

Reviewers: sdardis, compnerd

Reviewed By: sdardis

Differential Revision: https://reviews.llvm.org/D39074

llvm-svn: 326250
2018-02-27 21:24:02 +00:00
John Baldwin e3e433b038 [libunwind] Permit additional compiler and linker flags to be passed to tests.
Summary:
This is done via new LIBUNWIND_TEST_COMPILER_FLAGS and
LIBUNWIND_TEST_LINKER_FLAGS variables.

Reviewed By: sdardis

Differential Revision: https://reviews.llvm.org/D43585

llvm-svn: 326223
2018-02-27 18:40:04 +00:00
Don Hinton 73e88d394b [cmake] [libunwind] LLVM_FOUND isn't always set, so just test if
llvm_setup_rpath() is available instead.

llvm-svn: 323601
2018-01-27 19:31:44 +00:00
Martin Storsjo 25a37a894e Don't enable _LIBUNWIND_BUILD_ZERO_COST_APIS if building the SJLJ APIs
Otherwise, a shared library build with SJLJ APIs enabled would
end up with duplicate symbols.

This didn't occur for the apple && arm case due to specifically
checking for that in the surrounding ifdef.

Differential Revision: https://reviews.llvm.org/D42555

llvm-svn: 323499
2018-01-26 06:50:07 +00:00
Don Hinton 3a667b9bd8 [cmake] [libunwind] Call llvm_setup_rpath() when adding shared libraries.
Clang and llvm already use llvm_setup_rpath(), so this change will
help standarize rpath usage across all projects.

Differential Revision: https://reviews.llvm.org/D42461

llvm-svn: 323496
2018-01-26 04:01:50 +00:00
Don Hinton 82c5878575 [cmake] [libunwind] Fix find_path() problems when cross compiling
When CMAKE_SYSROOT or CMAKE_FIND_ROOT_PATH is set, cmake
recommends setting CMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY
globally which means find_path() always prepends CMAKE_SYSROOT or
CMAKE_FIND_ROOT_PATH to all paths used in the search.

However, this find_path() invocation is looking for a path in the
libcxx project on the host system, not the target system,
which can be done by passing NO_CMAKE_FIND_ROOT_PATH.

Differential Revision: https://reviews.llvm.org/D41621

llvm-svn: 323141
2018-01-22 19:15:06 +00:00
Martin Storsjo 89e636c87c [PPC64] Added vector registers.
The Registers_ppc64 class needed a couple of changes, both to accommodate the
new registers as well as to handle the overlaps of VS register set
without wasting space.

The save/restore code of V and VS registers was added.
As VS registers depend on the VMX extension, they are processed only if
VMX support is detected (_ARCH_PWR8 for now).

Patch by Leandro Lupori!

Differential Revision: https://reviews.llvm.org/D41906

llvm-svn: 322596
2018-01-16 20:54:10 +00:00
Petr Hosek 78df28e876 [libunwind] Set up .arcconfig to point to new Diffusion UNW repository
See http://lists.llvm.org/pipermail/cfe-dev/2017-November/056032.html
for related discussion and context.

Differential Revision: https://reviews.llvm.org/D41918

llvm-svn: 322228
2018-01-10 22:20:03 +00:00
John Baldwin 40bab37551 [libunwind][MIPS]: Rename Registers_mips_n64 to Registers_mips_newabi.
This is in preparation for adding support for N32 unwinding which reuses
the newabi register class.

Reviewed By: compnerd

Differential Revision: https://reviews.llvm.org/D41842

llvm-svn: 322093
2018-01-09 17:07:18 +00:00
Hans Wennborg 70dfbf2b2b Update PACKAGE_VERSION to 7.0.0svn
llvm-svn: 321743
2018-01-03 16:59:48 +00:00
Hans Wennborg d511616a96 Update docs version to 7.0
llvm-svn: 321732
2018-01-03 15:58:08 +00:00
Martin Storsjo 7c907061aa Reland [PPC64] Port to ppc64le - initial version
Initial working version of libunwind for PowerPC 64. Tested on
little-endian ppc64 host only.
Based on the existing PowerPC 32 code.

It supports:

- context save/restore (unw_getcontext, unw_init_local, unw_resume)
- read/write from/to saved registers
- backtrace (unw_step)

Patch by Leandro Lupori!

Differential Revision: https://reviews.llvm.org/D41386

Now builds with LIBUNWIND_ENABLE_CROSS_UNWINDING=ON should
work.

llvm-svn: 321680
2018-01-02 22:11:30 +00:00
Martin Storsjo ecf9054544 Don't use a strict larger-than comparison in the check_fit/does_fit static assert
For builds that only target one architecture, this was required to
be an exact match, while it previously required the allocation to be
strictly larger than the largest concrete one. Requiring it to be
larger than on equal should be enough.

This makes it more straightforward to update _LIBUNWIND_CONTEXT_SIZE
and _LIBUNWIND_CURSOR_SIZE.

llvm-svn: 321679
2018-01-02 22:11:22 +00:00
Tim Shen f5d150037a Revert `rL321667: [PPC64] Port to ppc64le - initial version`
Differential Revision: https://reviews.llvm.org/D41386

llvm-svn: 321678
2018-01-02 22:04:03 +00:00
Martin Storsjo 0aa55fdbba [PPC64] Port to ppc64le - initial version
Initial working version of libunwind for PowerPC 64. Tested on
little-endian ppc64 host only.
Based on the existing PowerPC 32 code.

It supports:

- context save/restore (unw_getcontext, unw_init_local, unw_resume)
- read/write from/to saved registers
- backtrace (unw_step)

Patch by Leandro Lupori!

Differential Revision: https://reviews.llvm.org/D41386

llvm-svn: 321667
2018-01-02 20:10:54 +00:00
Chandler Carruth e243ff8141 There is no portable format string for printing `uintptr_t` values.
Instead, cast them to `void *` which has a portable format string syntax
of `%p`.

This fixes a -Wformat error when building libunwind.

llvm-svn: 321469
2017-12-27 05:46:53 +00:00
whitequark 99bbb213b5 [libunwind] Remove dubious template function. NFC.
Per review by Don Hinton.

llvm-svn: 321448
2017-12-25 21:08:41 +00:00
whitequark 3560fde80f [libunwind] Unbreak debug builds after r321440.
llvm-svn: 321446
2017-12-25 20:04:47 +00:00
whitequark dcd93505da [libunwind] Add proper support for DWARF unwind on bare metal.
Right now, ARM EHABI unwind on bare metal expects to find the symbols
__exidx_start and __exidx_end defined, and uses those to locate
the EH tables. However, DWARF unwind on bare metal expects to find
dl_iterate_phdr, which, although possible to provide, is inconvenient
and mildly absurd.

This commit provides feature parity with ARM EHABI unwind by looking
for symbols __eh_frame_start, __eh_frame_end, __eh_frame_hdr_start
and __eh_frame_hdr_end, denoting the start and end of the sections
with corresponding names. As far as I know, there is no de jure or
de facto ABI providing any such names, so I chose the obvious ones.

The .eh_frame_hdr support is optional for maximum flexibility and
possible space savings (e.g. if libunwind is only used to provide
backtraces when a device crashes, providing the .eh_frame_hdr, which
is an index for rapid access to EH tables, would be a waste.)

The support for .eh_frame_hdr/DWARF index in the first place is
conditional on defined(_LIBUNWIND_SUPPORT_DWARF_INDEX), although
right now config.h will always define this macro.

The support for DWARF unwind on bare metal has been validated within
the ARTIQ environment[1].

  [1]: https://m-labs.hk/artiq/

llvm-svn: 321445
2017-12-25 17:05:07 +00:00
whitequark 2b2a02ea13 [libunwind] fix a typo in r321441.
llvm-svn: 321442
2017-12-25 13:42:41 +00:00
whitequark fa83ee2523 [libunwind] convert error logs to _LIBUNWIND_LOG/_LIBUNWIND_LOG0.
Use the `_LIBUNWIND_LOG` and `_LIBUNWIND_LOG0` macros instead of
the explicit `fprintf` call.

This was previously done in r292721 as a cleanup and then reverted
in r293257 because the implementation in r292721 relied on a GNU
extension. This implementation avoids the use of an extension
by using a second macro instead, and allows to avoid the dependency
on fprintf if _LIBUNWIND_BARE_METAL is defined.

llvm-svn: 321441
2017-12-25 13:27:56 +00:00
whitequark 91e49066e3 [libunwind] Avoid using C++ headers.
This is useful for building libunwind on libcxx-free systems.

llvm-svn: 321440
2017-12-25 13:06:09 +00:00
John Baldwin dfbbbdf8cd [libunwind][MIPS]: Add support for unwinding in O32 and N64 processes.
This supports the soft-float ABI only and has been tested with both clang
and gcc on FreeBSD.

Reviewed By: sdardis, compnerd

Differential Revision: https://reviews.llvm.org/D38110

llvm-svn: 320528
2017-12-12 21:43:36 +00:00