This changes introduces an internal API for VxWorks version checks
within runtime files, a prerequisite to a few fixes coming up for libstdc++
builds on more recent versions of the OS.
2019-12-30 Olivier Hainque <hainque@adacore.com>
gcc/
* config/vxworks/_vxworks-versions.h: New file.
* config.gcc (*-*-vxworks*): Add it to extra_headers.
libgcc/
* config/gthr-vxworks.h: Use _vxworks-versions.h.
* config/gthr-vxworks-tls.c: Likewise.
From-SVN: r279783
contrib/ChangeLog:
2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config-list.mk: Add msp430-elfbare.
gcc/ChangeLog:
2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config.gcc: s/msp430*-*-*/msp430-*-*.
Handle msp430-*-elfbare.
* config/msp430/msp430-devices.c (TARGET_SUBDIR): Define.
(_MSPMKSTR): Define.
(__MSPMKSTR): Define.
(rest_of_devices_path): Use TARGET_SUBDIR value in string.
* config/msp430/msp430.c (msp430_option_override): Error if
-fuse-cxa-atexit is used when it has been disabled at configure time.
* config/msp430/t-msp430: Define TARGET_SUBDIR when building
msp430-devices.o.
* doc/install.texi: Document msp430-*-elf and msp430-*-elfbare.
* doc/invoke.texi: Update documentation about which path devices.csv is
searched for.
gcc/testsuite/ChangeLog:
2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* g++.dg/init/dso_handle1.C: Require cxa_atexit support.
* g++.dg/init/dso_handle2.C: Likewise.
* g++.dg/other/cxa-atexit1.C: Likewise.
* gcc.target/msp430/msp430.exp: Update csv-using-installed.c test to
handle msp430-elfbare configuration.
libgcc/ChangeLog:
2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config.host: s/msp430*-*-elf/msp430-*-elf*.
Override default "extra_parts" variable.
* configure: Regenerate.
* configure.ac: Disable TM clone registry by default for
msp430-elfbare.
From-SVN: r279442
ChangeLog:
2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config-ml.in (msp430-*-*): Support --disable-no-exceptions configure
flag.
gcc/ChangeLog:
2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config/msp430/msp430.h (STARTFILE_SPEC) [!fexceptions]: Use
crtbegin_no_eh.o if building for the C language.
[fno-exceptions]: Use crtbegin_no_eh.o if building for any language
except C.
(ENDFILE_SPEC) [!fexceptions]: Use crtend_no_eh.o if building for
the C language.
[fno-exceptions]: Use crtend_no_eh.o if building for any language
except C.
* config/msp430/t-msp430: Add -fno-exceptions multilib.
* doc/install.texi: Document --disable-no-exceptions multilib configure
option.
* doc/sourcebuild.texi: Document exceptions_enabled effective target.
gcc/testsuite/ChangeLog:
2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* lib/gcc-dg.exp: Add dg-prune messages for when exception handling is
disabled.
* lib/target-supports.exp (check_effective_target_exceptions_enabled):
New.
libgcc/ChangeLog:
2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config.host: Add crt{begin,end}_no_eh.o to "extra_parts".
* config.host (msp430*-*-elf): Add crt{begin,end}_no_eh.o to
"extra_parts".
From-SVN: r279246
2019-12-09 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* crtstuff.c (__do_global_dtors_aux): Check if USE_EH_FRAME_REGISTRY is
defined instead of its value.
From-SVN: r279125
2019-12-09 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* crtstuff.c (__do_global_dtors_aux): Wrap in #if so it's only defined
if it will have contents.
From-SVN: r279123
The gthr weak reference based single thread detection is unsafe with
static linking and in case of dynamic linking it's ineffective on musl
since pthread symbols are defined in libc.so.
(Ideally this should be fixed for all targets, since glibc plans to move
libpthread.so into libc.so too and users want to static link to pthread
without --whole-archive: PR87189.)
For now we have to explicitly opt out from the broken behaviour in the
config machinery of each target lib and libgcc was previously missed.
libgcc/ChangeLog:
2019-11-18 Szabolcs Nagy <szabolcs.nagy@arm.com>
* config.host: Add t-gthr-noweak on *-*-musl*.
* config/t-gthr-noweak: New file.
From-SVN: r278399
Add the dynamic linker name and fix a type name to use the public name
instead of the glibc internal name.
gcc/ChangeLog:
2019-11-15 Szabolcs Nagy <szabolcs.nagy@arm.com>
* config/m68k/linux.h (MUSL_DYNAMIC_LINKER): Define.
libgcc/ChangeLog:
2019-11-15 Szabolcs Nagy <szabolcs.nagy@arm.com>
* config/m68k/linux-unwind.h (struct uw_ucontext): Use sigset_t instead
of __sigset_t.
From-SVN: r278312
2019-11-13 Jerome Lambourg <lambourg@adacore.com>
Doug Rupp <rupp@adacore.com>
Olivier Hainque <hainque@adacore.com>
gcc/
* config.gcc: Collapse the arm-vxworks entries into
a single arm-wrs-vxworks7* one, bpabi based. Update
the default cpu from arm8 to armv7-a
* config/arm/vxworks.h (CC1_SPEC): Simplify, knowing that
we always use ARM_UNWIND_INFO.
(DWARF2_UNWIND_INFO): Remove redefinition.
(ARM_TARGET2_DWARF_FORMAT): Likewise.
(VXWORKS_PERSONALITY): Define, to "llvm".
(VXWORKS_EXTRA_LIBS_RTP): Define, to "-lllvm".
libgcc/
* config.host: Collapse the arm-vxworks entries into
a single arm-wrs-vxworks7* one.
* config/arm/unwind-arm-vxworks.c: Update comments. Provide
__gnu_Unwind_Find_exidx and a weak dummy __cxa_type_match for
kernel modules, to be overriden by libstdc++ when we link with
it. Rely on externally provided __exidx_start/end.
Co-Authored-By: Doug Rupp <rupp@adacore.com>
Co-Authored-By: Olivier Hainque <hainque@adacore.com>
From-SVN: r278253
2019-11-12 Olivier Hainque <hainque@adacore.com>
libgcc/
* config/t-gthr-vxworksae: New file, add all the gthr-vxworks
sources except the cxx0x support to LIB2ADDEH. We don't support
cxx0x on AE/653.
* config/t-vxworksae: New file.
* config.host: Handle *-*-vxworksae: Add the two aforementioned
Makefile fragment files at their expected position in the tmake_file
list, in accordance with what is done for other VxWorks variants.
From-SVN: r278250
2019-11-12 Corentin Gay <gay@adacore.com>
Jerome Lambourg <lambourg@adacore.com>
Olivier Hainque <hainque@adacore.com>
libgcc/
* config/t-gthr-vxworks: New file, add all the gthr-vxworks
sources to LIB2ADDEH.
* config/t-vxworks: Remove adjustments to LIB2ADDEH.
* config/t-vxworks7: Likewise.
* config.host: Append a block at the end of the file to add the
t-gthr files to the tmake_file list for VxWorks after everything
else.
* config/vxlib.c: Rename as gthr-vxworks.c.
* config/vxlib-tls.c: Rename as gthr-vxworks-tls.c.
* config/gthr-vxworks.h: Simplify a few comments. Expose a TAS
API and a basic error checking API, both internal. Simplify the
__gthread_once_t type definition and initializers. Add sections
for condition variables support and for the C++0x thread support,
conditioned against Vx653 for the latter.
* config/gthr-vxworks.c (__gthread_once): Simplify comments and
implementation, leveraging the TAS internal API.
* config/gthr-vxworks-tls.c: Introduce an internal TLS data access
API, leveraging the general availability of TLS services in VxWorks7
post SR6xxx.
(__gthread_setspecific, __gthread_setspecific): Use it.
(tls_delete_hook): Likewise, and simplify the enter/leave dtor logic.
* config/gthr-vxworks-cond.c: New file. GTHREAD_COND variable
support based on VxWorks primitives.
* config/gthr-vxworks-thread.c: New file. GTHREAD_CXX0X support
based on VxWorks primitives.
Co-Authored-By: Jerome Lambourg <lambourg@adacore.com>
Co-Authored-By: Olivier Hainque <hainque@adacore.com>
From-SVN: r278249
2019-11-06 Jerome Lambourg <lambourg@adacore.com>
Olivier Hainque <hainque@adacore.com>
libgcc/
* config/vxcrtstuff.c: New file.
* config/t-vxcrtstuff: New Makefile fragment.
* config.host: Append t-vxcrtstuff to the tmake_file list
on all VxWorks ports using dwarf for table based EH.
gcc/
* config/vx-common.h (USE_TM_CLONE_REGISTRY): Remove
definition, pointless with a VxWorks specific version
of crtstuff.
(DWARF2_UNWIND_INFO): Conditionalize on !ARM_UNWIND_INFO.
* config/vxworks.h (VX_CRTBEGIN_SPEC, VX_CRTEND_SPEC):
New local macros, controlling the addition of vxworks specific
crtstuff objects depending on the EH mechanism and kind of
module being linked.
(VXWORKS_STARTFILE_SPEC, VXWORKS_ENDFILE_SPEC): Use them.
Co-Authored-By: Olivier Hainque <hainque@adacore.com>
From-SVN: r278248
gcc/
Support 64-bit double and 64-bit long double configurations.
PR target/92055
* config.gcc (tm_defines) [avr]: Set from --with-double=,
--with-long-double=.
* config/avr/t-multilib: Remove.
* config/avr/t-avr: Output of genmultilib.awk is now fully
dynamically generated and no more part of the repo.
(HAVE_DOUBLE_MULTILIB, HAVE_LONG_DOUBLE_MULTILIB): New variables.
Pass them down to...
* config/avr/genmultilib.awk: ...here and handle them.
* gcc/config/avr/avr.opt (-mdouble=, avr_double). New option and var.
(-mlong-double=, avr_long_double). New option and var.
* common/config/avr/avr-common.c (opts.h, diagnostic.h): Include.
(TARGET_OPTION_OPTIMIZATION_TABLE) <-mdouble=, -mlong-double=>:
Set default as requested by --with-double=
(TARGET_HANDLE_OPTION): Define to this...
(avr_handle_option): ...new hook worker.
* config/avr/avr.h (DOUBLE_TYPE_SIZE): Define to avr_double.
(LONG_DOUBLE_TYPE_SIZE): Define to avr_long_double.
(avr_double_lib): New proto for spec function.
(EXTRA_SPEC_FUNCTIONS) <double-lib>: Add.
(DRIVER_SELF_SPECS): Call %:double-lib.
* config/avr/avr.c (avr_option_override): Assert
sizeof(long double) >= sizeof(double) for the target.
* config/avr/avr-c.c (avr_cpu_cpp_builtins)
[__HAVE_DOUBLE_MULTILIB__, __HAVE_LONG_DOUBLE_MULTILIB__]
[__HAVE_DOUBLE64__, __HAVE_DOUBLE32__, __DEFAULT_DOUBLE__=]
[__HAVE_LONG_DOUBLE64__, __HAVE_LONG_DOUBLE32__]
[__HAVE_LONG_DOUBLE_IS_DOUBLE__, __DEFAULT_LONG_DOUBLE__=]:
New built-in define depending on --with-double=, --with-long-double=.
* config/avr/driver-avr.c (avr_double_lib): New spec function.
* doc/invoke.tex (AVR Options) <-mdouble=,-mlong-double=>: Doc.
* doc/install.texi (Cross-Compiler-Specific Options)
<--with-double=, --with-long-double=>: Doc.
libgcc/
Support 64-bit double and 64-bit long double configurations.
PR target/92055
* config/avr/t-avr (HOST_LIBGCC2_CFLAGS): Only add -DF=SF if
long double is a 32-bit type.
* config/avr/t-avrlibc: Copy double64 and long-double64
multilib(s) from the vanilla one.
* config/avr/t-copy-libgcc: New Makefile snip.
From-SVN: r277908
2019-11-04 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* crtstuff.c: Define USE_TM_CLONE_REGISTRY to 0 if it's undefined and
the target output object format is not ELF.
s/defined(USE_TM_CLONE_REGISTRY)/USE_TM_CLONE_REGISTRY.
From-SVN: r277775
Using -mno-fdiv gives linker errors unless we build the missing divide
routines in libgcc always. There is at least one university project
designing RISC-V parts without FP divide that wants to use the option.
libgcc/
* config/riscv/t-softfp32 (softfp_extra): Add FP divide routines
From-SVN: r277723
* config/pa/fptr.c (_dl_read_access_allowed): Change argument to
unsigned int. Adjust callers.
(__canonicalize_funcptr_for_compare): Change plabel type to volatile
unsigned int *. Load relocation offset before function pointer.
Add barrier to ensure ordering.
From-SVN: r277015
* config/pa/lib2funcs.S (__gcc_plt_call): Load branch target to %r21.
Load PIC register after branch target. Fix white space.
* config/pa/milli64.S ($$dyncall): Separate LINUX and non LINUX
implementations. Load PIC register after branch target. Don't
clobber function pointer when it points to function descriptor.
Use nullification instead of branch in LINUX implementation.
From-SVN: r276925
The DCache clean & ICache invalidation requirements for instructions
to be data coherence are discoverable through new fields in CTR_EL0.
Let's support the two bits if they are enabled, the CPU core will
not execute the unnecessary DCache clean or Icache Invalidation
instructions.
2019-09-25 Shaokun Zhang <zhangshaokun@hisilicon.com>
* config/aarch64/sync-cache.c (__aarch64_sync_cache_range): Add support for
CTR_EL0.IDC and CTR_EL0.DIC.
From-SVN: r276122
This is causing regressions when mixing with user code compiled in ARM mode.
2019-09-20 Christophe Lyon <christophe.lyon@st.com>
Revert:
2019-09-10 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
* config/arm/unwind-arm.c (_Unwind_VRS_Set): Handle thumb-only
architecture.
From-SVN: r276001
This is the libgcc part of the interface -- providing the functions.
Rationale is provided at the top of libgcc/config/aarch64/lse.S.
* config/aarch64/lse-init.c: New file.
* config/aarch64/lse.S: New file.
* config/aarch64/t-lse: New file.
* config.host: Add t-lse to all aarch64 tuples.
From-SVN: r275967
Without this, when we are unwinding across a signal frame we can jump
to an even address which leads to an exception.
This is needed in __gnu_persnality_sigframe_fdpic() when restoring the
PC from the signal frame since the PC saved by the kernel has the LSB
bit set to zero.
2019-09-10 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
libgcc/
* config/arm/unwind-arm.c (_Unwind_VRS_Set): Handle thumb-only
architecture.
Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>
From-SVN: r275575
The main difference with existing support is that function addresses
are function descriptor addresses instead. This means that all code
dealing with function pointers now has to cope with function
descriptors instead.
For the same reason, Linux kernel helpers can no longer be called by
dereferencing their address, so we implement wrappers that directly
call the kernel helpers.
When restoring a function address, we also have to restore the FDPIC
register value (r9).
2019-09-10 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
gcc/
* ginclude/unwind-arm-common.h (unwinder_cache): Add reserved5
field.
libgcc/
* config/arm/linux-atomic.c (__kernel_cmpxchg): Add FDPIC support.
(__kernel_dmb): Likewise.
(__fdpic_cmpxchg): New function.
(__fdpic_dmb): New function.
* config/arm/unwind-arm.h (FDPIC_REGNUM): New define.
(gnu_Unwind_Find_got): New function.
(_Unwind_decode_typeinfo_ptr): Add FDPIC support.
* unwind-arm-common.inc (UCB_PR_GOT): New.
(funcdesc_t): New struct.
(get_eit_entry): Add FDPIC support.
(unwind_phase2): Likewise.
(unwind_phase2_forced): Likewise.
(__gnu_Unwind_RaiseException): Likewise.
(__gnu_Unwind_Resume): Likewise.
(__gnu_Unwind_Backtrace): Likewise.
* unwind-pe.h (read_encoded_value_with_base): Likewise.
libstdc++/
* libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
support.
Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>
From-SVN: r275568
In FDPIC, we need to make sure __do_global_dtors_aux and frame_dummy
are referenced by their address, not by pointers to the function
descriptors.
2019-09-10 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
libgcc/
* libgcc/crtstuff.c: Add support for FDPIC.
Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>
From-SVN: r275567
The new arm-uclinuxfdpiceabi target behaves pretty much like
arm-linux-gnueabi. In order to enable the same set of features, we
have to update several configure scripts that generally match targets
like *-*-linux*: in most places, we add *-uclinux* where there is
already *-linux*, or uclinux* when there is already linux*.
In gcc/config.gcc and libgcc/config.host we use *-*-uclinuxfdpiceabi
because there is already a different behaviour for *-*uclinux* target.
In libtool.m4, we use uclinuxfdpiceabi in cases where ELF shared
libraries support is required, as uclinux does not guarantee that.
2019-09-10 Christophe Lyon <christophe.lyon@st.com>
config/
* futex.m4: Handle *-uclinux*.
* tls.m4 (GCC_CHECK_TLS): Likewise.
gcc/
* config.gcc: Handle *-*-uclinuxfdpiceabi.
libatomic/
* configure.tgt: Handle arm*-*-uclinux*.
* configure: Regenerate.
libgcc/
* config.host: Handle *-*-uclinuxfdpiceabi.
libitm/
* configure.tgt: Handle *-*-uclinux*.
* configure: Regenerate.
* libtool.m4: Handle uclinuxfdpiceabi.
From-SVN: r275564
This re-enables -msave-restore for shared libraries, and uses the
t-slibgcc-libgcc file to get the save-restore routines included directly
in shared libraries so that we don't need to indirect through the PLT
to reach them, which doesn't work.
gcc/
* config/riscv/riscv.c (riscv_option_override): Revert 2019-08-30
change.
libgcc/
* config.host (riscv*-*-linux*): Add t-slibgcc-libgcc to tmake_file.
(riscv*-*-freebsd*): Likewise.
From-SVN: r275478
gcc/ChangeLog:
* config.gcc (hppa*-*-netbsd*): New target.
* config/pa/pa-netbsd.h: New file.
* config/pa/pa32-netbsd.h: New file.
libgcc/ChangeLog:
* config.host (hppa*-*-netbsd*): New case.
* config/pa/t-netbsd: New file.
Co-Authored-By: Matthew Green <mrg@eterna.com.au>
Co-Authored-By: Maya Rashish <coypu@sdf.org>
Co-Authored-By: Nick Hudson <nick@nthcliff.demon.co.uk>
From-SVN: r273933
At present it is possible to call the CMSE functions for checking
addresses (such as cmse_check_address_range) and forget to check/use
the return value. This patch makes the interfaces more robust against
programmer error by marking these functions with the warn_unused_result
attribute. With this set, any use of these functions that does not use
the result will produce a warning.
This produces a warning on default warn levels when the result of the
cmse functions is not used.
For the following function:
void foo()
{
int *data;
cmse_check_address_range((int*)data, 0, 0);
}
The following warning is emitted:
warning: ignoring return value of 'cmse_check_address_range' declared
with attribute 'warn_unused_result' [-Wunused-result]
6 | cmse_check_address_range((int*)data, 0, 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcc/ChangeLog:
2019-07-31 Joel Hutton <Joel.Hutton@arm.com>
* config/arm/arm_cmse.h (cmse_nonsecure_caller): Add
warn_unused_result attribute.
(cmse_check_address_range): Add warn_unused_result attribute.
libgcc/ChangeLog:
2019-07-31 Joel Hutton <Joel.Hutton@arm.com>
* config/arm/cmse.c (cmse_check_address_range): Add
warn_unused_result attribute.
2019-07-31 Joel Hutton <Joel.Hutton@arm.com>
* gcc.target/arm/cmse/cmse-17.c: New test.
From-SVN: r273924
