Commit Graph

27 Commits

Author SHA1 Message Date
Tom de Vries
1554556312 [libatomic] Add nvptx support
Add nvptx support to libatomic.

Given that atomic_test_and_set is not implemented for nvptx (PR96964), the
compiler translates __atomic_test_and_set falling back onto the "Failing all
else, assume a single threaded environment and simply perform the operation"
case in expand_atomic_test_and_set, so it doesn't map onto an actual atomic
operation.

Still, that counts as supported for the configure test of libatomic, so we
end up with HAVE_ATOMIC_TAS_1/2/4/8/16 == 1, and the corresponding
__atomic_test_and_set_1/2/4/8/16 in libatomic all using that non-atomic
implementation.

Fix this by adding an atomic_test_and_set expansion for nvptx, that uses
libatomics __atomic_test_and_set_1.

This again makes the configure tests for HAVE_ATOMIC_TAS_1/2/4/8/16 fail, so
instead we use this case in tas_n.c:
...
/* If this type is smaller than word-sized, fall back to a word-sized
   compare-and-swap loop.  */
bool
SIZE(libat_test_and_set) (UTYPE *mptr, int smodel)
...
which for __atomic_test_and_set_8 uses INVERT_MASK_8.

Add INVERT_MASK_8 in libatomic_i.h, as well as MASK_8.

Tested libatomic testsuite on nvptx.

gcc/ChangeLog:

	PR target/96964
	* config/nvptx/nvptx.md (define_expand "atomic_test_and_set"): New
	expansion.

libatomic/ChangeLog:

	PR target/96898
	* configure.tgt: Add nvptx.
	* libatomic_i.h (MASK_8, INVERT_MASK_8): New macro definition.
	* config/nvptx/host-config.h: New file.
	* config/nvptx/lock.c: New file.
2020-09-11 12:06:15 +02:00
David Edelsohn
4f97bed9a7 aix: FAT libraries: test native compiler mode directly
The FAT libraries config fragments need to know which library is native
and which is a multilib to choose the correct multilib from which to
append the additional object file or shared object file.  Testing the
top-level archive is fragile because it will fail if rebuilding.  This
patch tests the compiler preprocessing macros for the 64 bit AIX specific
__64BIT__ to determine the native mode of the compiler in MULTILIBTOP.

2020-07-14  David Edelsohn  <dje.gcc@gmail.com>

libatomic/ChangeLog

	* config/t-aix: Set BITS from compiler cpp macro.

libgcc/ChangeLog

	* config/rs6000/t-slibgcc-aix: Set BITS from compiler cpp macro.

libgfortran/ChangeLog

	* config/t-aix: Set BITS from compiler cpp macro.

libgomp/ChangeLog

	* config/t-aix: Set BITS from compiler cpp macro.

libstdc++-v3/ChangeLog

	* config/os/aix/t-aix: Set BITS from compiler cpp macro.
2020-07-14 10:41:40 -04:00
David Edelsohn
47ddb895df aix: Add GCC64 configuration and FAT target libraries.
This patch adds the ability to configure GCC on AIX to build as a
64 bit application and to build target libraries "FAT" libraries in both
32 bit and 64 bit mode.

The patch adds makefile fragment hooks to target libraries that allows
them to include target-specific rules.  The target specific rules for
AIX place both 32 bit and 64 bit objects and shared objects
in archives at the top-level, not multilib subdirectories.  The
multilibs are built in subdirectories, but must be combined during the
last parts of the target library build process.  Because of the way
that GCC bootstrap works, the libraries must be combined during the
multiple stages of GCC bootstrap, not solely when installed in the
final destination, so the libraries are correct at the end of
each target library build stage, not solely an install recipe.

gcc/ChangeLog

2020-06-21  David Edelsohn  <dje.gcc@gmail.com>

	* config.gcc: Use t-aix64, biarch64 and default64 for cpu_is_64bit.
	* config/rs6000/aix72.h (ASM_SPEC): Remove aix64 option.
	(ASM_SPEC32): New.
	(ASM_SPEC64): New.
	(ASM_CPU_SPEC): Remove vsx and altivec options.
	(CPP_SPEC_COMMON): Rename from CPP_SPEC.
	(CPP_SPEC32): New.
	(CPP_SPEC64): New.
	(CPLUSPLUS_CPP_SPEC): Rename to CPLUSPLUS_CPP_SPEC_COMMON..
	(TARGET_DEFAULT): Only define if not BIARCH.
	(LIB_SPEC_COMMON): Rename from LIB_SPEC.
	(LIB_SPEC32): New.
	(LIB_SPEC64): New.
	(LINK_SPEC_COMMON): Rename from LINK_SPEC.
	(LINK_SPEC32): New.
	(LINK_SPEC64): New.
	(STARTFILE_SPEC): Add 64 bit version of crtcxa and crtdbase.
	(ASM_SPEC): Define 32 and 64 bit alternatives using DEFAULT_ARCH64_P.
	(CPP_SPEC): Same.
	(CPLUSPLUS_CPP_SPEC): Same.
	(LIB_SPEC): Same.
	(LINK_SPEC): Same.
	(SUBTARGET_EXTRA_SPECS): Add new 32/64 specs.
	* config/rs6000/defaultaix64.h: New file.
	* config/rs6000/t-aix64: New file.

libgcc/ChangeLog

2020-06-21  David Edelsohn  <dje.gcc@gmail.com>

	* config.host (extra_parts): Add crtcxa_64 and crtdbase_64.
	* config/rs6000/t-aix-cxa: Explicitly compile 32 bit with -maix32
	and 64 bit with -maix64.
	* config/rs6000/t-slibgcc-aix: Remove extra @multilib_dir@ level.
	Build and install AIX-style FAT libraries.

libgomp/ChangeLog

2020-06-21  David Edelsohn  <dje.gcc@gmail.com>

	* Makefile.am (tmake_file): Build and install AIX-style FAT libraries.
	* Makefile.in: Regenerate
	* configure.ac (tmake_file): Substitute.
	* configure: Regenerate.
	* configure.tgt (powerpc-ibm-aix*): Define tmake_file.
	* config/t-aix: New file.

libstdc++-v3/ChangeLog

2020-06-21  David Edelsohn  <dje.gcc@gmail.com>

	* Makefile.am (tmake_file): Build and install AIX-style FAT libraries.
	* Makefile.in: Regenerate.
	* configure.ac (tmake_file): Substitute.
	* configure: Regenerate.
	* configure.host (aix*): Define tmake_file.
	* config/os/aix/t-aix: New file.

libatomic/ChangeLog

2020-06-21  David Edelsohn  <dje.gcc@gmail.com>

	* Makefile.am (tmake_file): Build and install AIX-style FAT libraries.
	* Makefile.in: Regenerate.
	* configure.ac (tmake_file): Substitute.
	* configure: Regenerate.
	* configure.tgt (powerpc-ibm-aix*): Define tmake_file.
	* config/t-aix: New file.

libgfortran/ChangeLog

2020-06-21  David Edelsohn  <dje.gcc@gmail.com>

	* Makefile.am (tmake_file): Build and install AIX-style FAT libraries.
	* Makefile.in: Regenerate.
	* configure.ac (tmake_file): Substitute.
	* configure: Regenerate.
	* configure.host: Add system configury stanza. Define tmake_file.
	* config/t-aix: New file.
2020-06-21 14:14:46 -04:00
Uros Bizjak
832c1192eb i386: Add __attribute__ ((gcc_struct)) to struct fenv [PR95418]
Windows ABI (MinGW) is different than Linux ABI when bitfileds are involved.
The following patch adds __attribute__ ((gcc_struct)) to struct fenv in order
to match the layout of x87 state image in memory.

2020-06-01  Uroš Bizjak  <ubizjak@gmail.com>

libatomic/ChangeLog:
	* config/x86/fenv.c (struct fenv): Add __attribute__ ((gcc_struct)).

libgcc/ChangeLog:
	* config/i386/sfp-exceptions.c (struct fenv):
	Add __attribute__ ((gcc_struct)).

libgfortran/ChangeLog:
	PR libfortran/95418
	* config/fpu-387.h (struct fenv): Add __attribute__ ((gcc_struct)).
2020-06-01 22:29:20 +02:00
Uros Bizjak
d3a1459cd4 i386: Use generic division to generate INEXACT exception
Introduce math_force_eval_div to use generic division to generate
INEXACT as well as INVALID and DIVZERO exceptions.

libgcc/ChangeLog:

	* config/i386/sfp-exceptions.c (__math_force_eval): Remove.
	(__math_force_eval_div): New define.
	(__sfp_handle_exceptions): Use __math_force_eval_div to use
	generic division to generate INVALID, DIVZERO and INEXACT
	exceptions.

libatomic/ChangeLog:

	* config/x86/fenv.c (__math_force_eval): Remove.
	(__math_force_eval_div): New define.
	(__atomic_deraiseexcept): Use __math_force_eval_div to use
	generic division to generate INVALID, DIVZERO and INEXACT
	exceptions.

libgfortran/ChangeLog:

	* config/fpu-387.h (__math_force_eval): Remove.
	(__math_force_eval_div): New define.
	(local_feraiseexcept): Use __math_force_eval_div to use
	generic division to generate INVALID, DIVZERO and INEXACT
	exceptions.
	(struct fenv): Define named struct instead of typedef.
2020-05-06 23:01:32 +02:00
Uros Bizjak
afb9b71081 i386: Use generic division to generate INVALID and DIVZERO exceptions
Introduce math_force_eval to evaluate generic division to generate
INVALID and DIVZERO exceptions.

libgcc/ChangeLog:

	* config/i386/sfp-exceptions.c (__math_force_eval): New define.
	(__sfp_handle_exceptions): Use __math_force_eval to evaluete
	generic division to generate INVALID and DIVZERO exceptions.

libatomic/ChangeLog:

	* config/x86/fenv.c (__math_force_eval): New define.
	(__atomic_feraiseexcept): Use __math_force_eval to evaluete
	generic division to generate INVALID and DIVZERO exceptions.

libgfortran/ChangeLog:

	* config/fpu-387.h (__math_force_eval): New define.
	(local_feraiseexcept): Use __math_force_eval to evaluete
	generic division to generate INVALID and DIVZERO exceptions.
2020-05-01 19:20:57 +02:00
Uros Bizjak
df73e5842f i386: Remove unneeded assignments when triggering SSE exceptions
According to "Intel 64 and IA32 Arch SDM, Vol. 3:

"Because SIMD floating-point exceptions are precise and occur immediately,
the situation does not arise where an x87 FPU instruction, a WAIT/FWAIT
instruction, or another SSE/SSE2/SSE3 instruction will catch a pending
unmasked SIMD floating-point exception."

Remove unneeded assignments to volatile memory.

libgcc/ChangeLog:

	* config/i386/sfp-exceptions.c (__sfp_handle_exceptions) [__SSE_MATH__]:
	Remove unneeded assignments to volatile memory.

libatomic/ChangeLog:

	* config/x86/fenv.c (__atomic_feraiseexcept) [__SSE_MATH__]:
	Remove unneeded assignments to volatile memory.

libgfortran/ChangeLog:

	* config/fpu-387.h (local_feraiseexcept) [__SSE_MATH__]:
	Remove unneeded assignments to volatile memory.
2020-04-19 14:27:12 +02:00
Jakub Jelinek
8d9254fc8a Update copyright years.
From-SVN: r279813
2020-01-01 12:51:42 +01:00
Jakub Jelinek
a554497024 Update copyright years.
From-SVN: r267494
2019-01-01 13:31:55 +01:00
Christophe Lyon
9b2e34ef6d [ARM] Use __ARM_ARCH and __ARM_FEATURE_LDREX instead of __ARM_ARCH__
2018-06-21  Christophe Lyon  <christophe.lyon@linaro.org>

	libatomic/
	* config/arm/arm-config.h (__ARM_ARCH__): Remove definitions, use
	__ARM_ARCH instead. Use __ARM_FEATURE_LDREX to define HAVE_STREX
	and HAVE_STREXBHD

	libgcc/
	* config/arm/lib1funcs.S (__ARM_ARCH__): Remove definitions, use
	__ARM_ARCH and __ARM_FEATURE_CLZ instead.
	(HAVE_ARM_CLZ): Remove definition, use __ARM_FEATURE_CLZ instead.
	* config/arm/ieee754-df.S: Use __ARM_FEATURE_CLZ instead of
	__ARM_ARCH__.
	* config/arm/ieee754-sf.S: Likewise.
	* config/arm/libunwind.S: Use __ARM_ARCH instead of __ARM_ARCH__.

From-SVN: r261841
2018-06-21 13:05:36 +02:00
Florian Weimer
cb3c90cc42 x86: libatomic: Do not assume ELF constructors run before IFUNC resolvers
PR libgcc/60790
	x86: Do not assume ELF constructors run before IFUNC resolvers.
	* config/x86/host-config.h (libat_feat1_ecx, libat_feat1_edx):
	Remove declarations.
	(__libat_feat1, __libat_feat1_init): Declare.
	(FEAT1_REGISTER): Define.
	(load_feat1): New function.
	(IFUNC_COND_1): Adjust.
	* config/x86/init.c (libat_feat1_ecx, libat_feat1_edx)
	(init_cpuid): Remove definitions.
	(__libat_feat1): New variable.
	(__libat_feat1_init): New function.

From-SVN: r260603
2018-05-23 13:13:05 +02:00
Andreas Krebbel
a4c6bd0821 S/390: libatomic: Fix 16 byte atomic exchange
The compiler builtin will use the hardware instruction cdsg if the
memory operand is properly aligned and will fall back to the
library call otherwise.
In case the compiler for one part is able to detect that the
location is aligned and fails to do so for another usage of the hw
instruction and the sw fall back would be mixed on the same memory
location.  To avoid this the library fall back also has to use the
hardware instruction if possible.

libatomic/ChangeLog:

2018-03-09  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/exch_n.c: New file.
	* configure.tgt: Add the config directory for s390.

From-SVN: r258384
2018-03-09 12:32:22 +00:00
Jakub Jelinek
85ec4feb11 Update copyright years.
From-SVN: r256169
2018-01-03 11:03:58 +01:00
Steve Ellcey
141abc6f1e Makefile.am (ARCH_AARCH64_LINUX): Add IFUNC_OPTIONS and libatomic_la_LIBADD.
2017-12-04  Steve Ellcey  <sellcey@cavium.com>

	* Makefile.am (ARCH_AARCH64_LINUX): Add IFUNC_OPTIONS and
	libatomic_la_LIBADD.
	* config/linux/aarch64/host-config.h: New file.
	* configure.ac (IFUNC_RESOLVER_ARGS): Define.
	(ARCH_AARCH64_LINUX): New conditional for IFUNC builds.
	* configure.tgt (aarch64): Set ARCH and try_ifunc.
	(aarch64*-*-linux*) Update config_path.
	(aarch64*-*-linux*) Set IFUNC_RESOLVER_ARGS.
	* libatomic_i.h (GEN_SELECTOR): Add IFUNC_RESOLVER_ARGS argument.
	* Makefile.in: Regenerate.
	* auto-config.h.in: Regenerate.
	* configure: Regenerate.

From-SVN: r255399
2017-12-05 00:49:09 +00:00
Torvald Riegel
969a32ce93 Fix __atomic to not implement atomic loads with CAS.
gcc/
	* builtins.c (fold_builtin_atomic_always_lock_free): Make "lock-free"
	conditional on existance of a fast atomic load.
	* optabs-query.c (can_atomic_load_p): New function.
	* optabs-query.h (can_atomic_load_p): Declare it.
	* optabs.c (expand_atomic_exchange): Always delegate to libatomic if
	no fast atomic load is available for the particular size of access.
	(expand_atomic_compare_and_swap): Likewise.
	(expand_atomic_load): Likewise.
	(expand_atomic_store): Likewise.
	(expand_atomic_fetch_op): Likewise.
	* testsuite/lib/target-supports.exp
	(check_effective_target_sync_int_128): Remove x86 because it provides
	no fast atomic load.
	(check_effective_target_sync_int_128_runtime): Likewise.

libatomic/
	* acinclude.m4: Add #define FAST_ATOMIC_LDST_*.
	* auto-config.h.in: Regenerate.
	* config/x86/host-config.h (FAST_ATOMIC_LDST_16): Define to 0.
	(atomic_compare_exchange_n): New.
	* glfree.c (EXACT, LARGER): Change condition and add comments.

From-SVN: r245098
2017-02-01 17:21:59 +00:00
Szabolcs Nagy
87c45ec798 [ARM][PR target/78945] Fix libatomic on armv7-m
ARM libatomic inline asm uses sel, uadd8, uadd16 instructions
which are only available if __ARM_FEATURE_SIMD32 is defined.

libatomic/
2017-01-30  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	PR target/78945
	* config/arm/exch_n.c (libat_exchange): Check __ARM_FEATURE_SIMD32.

From-SVN: r245023
2017-01-30 11:34:13 +00:00
Jakub Jelinek
cbe34bb5ed Update copyright years.
From-SVN: r243994
2017-01-01 13:07:43 +01:00
Sebastian Huber
9b6ffe72c8 [libatomic] Add missing files for RTEMS support
Add missing files for:

2016-04-27  Sebastian Huber  <sebastian.huber@embedded-brains.de>

	* configure.tgt (configure_tgt_pre_target_cpu_XCFLAGS): New variable.
	(*-*-rtems*): New supported target.
	* config/rtems/host-config.h: New file.
	* config/rtems/lock.c: Likewise.

From-SVN: r236060
2016-05-10 06:52:48 +00:00
Jakub Jelinek
818ab71a41 Update copyright years.
From-SVN: r232055
2016-01-04 15:30:50 +01:00
Jakub Jelinek
5624e564d2 Update copyright years.
From-SVN: r219188
2015-01-05 13:33:28 +01:00
Kai Tietz
dc3368d0f5 Makefile.am (libatomic_la_LDFLAGS): Add lt_host_flags.
* Makefile.am (libatomic_la_LDFLAGS): Add lt_host_flags.
	* configure.ac (ACX_LT_HOST_FLAGS): New.
	(target_thread_file): New.
	* configure.tgt (mingw): Add mingw support.
	* config/mingw/host-config.h: New file.
	* config/mingw/lock.c: Likewise.
	* Makefile.in: Regenerated.
	* configure: Likewise.
	* aclocal.m4: Likewise.
	* testsuite/Makefile.in: Likewise.

From-SVN: r211747
2014-06-17 22:43:18 +02:00
Richard Sandiford
3e6a2e378c Update copyright years in libatomic/
From-SVN: r206291
2014-01-02 22:24:30 +00:00
Uros Bizjak
8b02e720d2 sfp-exceptions.c (__sfp_handle_exceptions): Emit SSE instructions when __TARGET_SSE__ is defined.
libgcc/ChangeLog:

2013-12-09  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/sfp-exceptions.c (__sfp_handle_exceptions): Emit SSE
	instructions when __TARGET_SSE__ is defined.

libatomic/ChangeLog:

2013-12-09  Uros Bizjak  <ubizjak@gmail.com>

	* config/x86/fenv.c (__atomic_feraiseexcept): Emit SSE
	instructions when __TARGET_SSE__ is defined.

From-SVN: r205811
2013-12-09 18:37:43 +01:00
Uros Bizjak
6fbf987777 fenv.c: New file.
* config/x86/fenv.c: New file.

From-SVN: r204634
2013-11-10 12:45:42 +01:00
Richard Sandiford
69b2c4233b Update copyright years in libatomic.
From-SVN: r195164
2013-01-14 18:16:23 +00:00
Marcus Shawcroft
408d29950d libatomic: Detect and build for ARM architecture armv8-a.
2012-12-04  Marcus Shawcroft  <marcus.shawcroft@arm.com>

	* config/arm/arm-config.h (__ARM_ARCH_8A__): New.

From-SVN: r194150
2012-12-04 15:14:47 +00:00
Richard Henderson
483104922a Add libatomic as a target library.
From-SVN: r187018
2012-05-01 08:48:28 -07:00