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Andrew Carlotti 2c200a12c1 aarch64: Add cpu feature detection to libgcc 
This is added to enable function multiversioning, but can also be used
directly.  The interface is chosen to match that used in LLVM's
compiler-rt, to facilitate cross-compiler compatibility.

The content of the patch is derived almost entirely from Pavel's prior
contributions to compiler-rt/lib/builtins/cpu_model.c. I have made minor
changes to align more closely with GCC coding style, and to exclude any code
from other LLVM contributors, and am adding this to GCC with Pavel's approval.

libgcc/ChangeLog:

	* config/aarch64/t-aarch64: Include cpuinfo.c
	* config/aarch64/cpuinfo.c: New file
	(__init_cpu_features_constructor) New.
	(__init_cpu_features_resolver) New.
	(__init_cpu_features) New.

Co-authored-by: Pavel Iliin <Pavel.Iliin@arm.com>
2023-12-16 00:38:41 +00:00
..
config aarch64: Add cpu feature detection to libgcc 2023-12-16 00:38:41 +00:00
soft-fp libgcc: Add {unsigned ,}__int128 <-> _Decimal{32,64,128} conversion support [PR65833] 2023-11-09 09:14:07 +01:00
ChangeLog Daily bump. 2023-12-12 00:17:22 +00:00
config.host arm: libgcc: provide implementations of __sync_synchronize 2023-11-24 14:15:26 +00:00
config.in libgcc: Fix config.in 2023-12-08 12:35:40 +00:00
configure libgcc: aarch64: Configure check for __getauxval 2023-12-08 11:29:06 +00:00
configure.ac libgcc: aarch64: Configure check for __getauxval 2023-12-08 11:29:06 +00:00
crtstuff.c Update copyright years. 2023-01-16 11:52:17 +01:00
dfp-bit.c Update copyright years. 2023-01-16 11:52:17 +01:00
dfp-bit.h Update copyright years. 2023-01-16 11:52:17 +01:00
divmod.c Update copyright years. 2023-01-16 11:52:17 +01:00
emutls.c libgcc: Avoid -Wbuiltin-declaration-mismatch warnings in emutls.c 2023-12-06 12:27:12 +01:00
enable-execute-stack-empty.c
enable-execute-stack-mprotect.c Update copyright years. 2023-01-16 11:52:17 +01:00
find-symver.awk Update copyright years. 2023-01-16 11:52:17 +01:00
fixed-bit.c Update copyright years. 2023-01-16 11:52:17 +01:00
fixed-bit.h Update copyright years. 2023-01-16 11:52:17 +01:00
fixed-obj.mk
floatunsidf.c
floatunsisf.c
floatunsitf.c
floatunsixf.c
fp-bit.c Update copyright years. 2023-01-16 11:52:17 +01:00
fp-bit.h Update copyright years. 2023-01-16 11:52:17 +01:00
gbl-ctors.h Update copyright years. 2023-01-16 11:52:17 +01:00
gcov.h Update copyright years. 2023-01-16 11:52:17 +01:00
gen-fixed.sh
generic-morestack-thread.c Update copyright years. 2023-01-16 11:52:17 +01:00
generic-morestack.c Update copyright years. 2023-01-16 11:52:17 +01:00
generic-morestack.h Update copyright years. 2023-01-16 11:52:17 +01:00
gstdint.h
gthr-posix.h libgfortran: Replace mutex with rwlock 2023-12-11 09:43:59 -08:00
gthr-single.h Update copyright years. 2023-01-16 11:52:17 +01:00
gthr.h Update copyright years. 2023-01-16 11:52:17 +01:00
hardcfr.c libgcc: mark __hardcfr_check_fail as always_inline 2023-11-23 17:31:40 +01:00
libgcc-std.ver.in Introduce strub: machine-independent stack scrubbing 2023-12-05 21:07:36 -03:00
libgcc2.c libgcc _BitInt helper documentation [PR102989] 2023-09-06 17:42:37 +02:00
libgcc2.h Introduce strub: machine-independent stack scrubbing 2023-12-05 21:07:36 -03:00
libgcov-driver-system.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-driver.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-interface.c libgcov: Call __builtin_fork instead of fork 2023-12-08 16:27:55 +01:00
libgcov-merge.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-profiler.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-util.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov.h gcov: Fix use of __LIBGCC_HAVE_LIBATOMIC 2023-12-01 09:54:24 +01:00
Makefile.in strub: enable conditional support 2023-12-07 12:58:20 -03:00
memcmp.c
memcpy.c
memmove.c
memset.c
mkheader.sh Update copyright years. 2023-01-16 11:52:17 +01:00
mkmap-flat.awk Update copyright years. 2023-01-16 11:52:17 +01:00
mkmap-symver.awk Update copyright years. 2023-01-16 11:52:17 +01:00
offloadstuff.c openmp: Add support for the 'indirect' clause in C/C++ 2023-11-07 15:44:50 +00:00
shared-object.mk
siditi-object.mk
static-object.mk
strub.c Introduce strub: machine-independent stack scrubbing 2023-12-05 21:07:36 -03:00
sync.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivhi3.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivmod.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivmodhi4.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivmodsi4.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-arm-common.inc Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-c.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-compat.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-compat.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-btree.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-execute_cfa.h libgcc: Fix uninitialized RA signing on AArch64 [PR107678] 2023-01-18 12:20:35 +00:00
unwind-dw2-fde-compat.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-fde-dip.c libgcc: Fix -Wint-conversion warning in find_fde_tail 2023-07-11 06:19:39 +02:00
unwind-dw2-fde.c preserve base pointer for __deregister_frame [PR110956] 2023-08-11 09:20:27 -06:00
unwind-dw2-fde.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2.c libgcc: Fix uninitialized RA signing on AArch64 [PR107678] 2023-01-18 12:20:35 +00:00
unwind-dw2.h libgcc: Fix uninitialized RA signing on AArch64 [PR107678] 2023-01-18 12:20:35 +00:00
unwind-generic.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-pe.h [committed] Fix build of libgcc on ports using FDPIC 2023-12-02 22:45:48 -07:00
unwind-seh.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-sjlj.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind.inc Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_end.c Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_end_preinit.c Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_start.c Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_start_preinit.c Update copyright years. 2023-01-16 11:52:17 +01:00