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460ee50de0
glibc/sysdeps/x86_64
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Adhemerval Zanella 460ee50de0 x86_64: Add SSE sfp-exceptions 
The exported x86_64 fenv.h functions operate on both i387 and SSE (since
they should work on both float, double, and long double) while the
internal libc_fe* set either SSE (float, double, and float128) or
i387 (long double).

The libgcc __sfp_handle_exceptions (used on float128 implementation),
however, will set either SEE or i387 exception depending of the
exception to raise.  This broke the internal assumption of float128
where only SSE operations will be used.

This patch reimplements the libgcc __sfp_handle_exceptions to use only
SSE operations and sets libgcc to use it instead of its own
implementation.

And I think we should fix libgcc in a similar manner, since checking on
config/i386/64/sfp-machine.h it already only supports SSE rounding mode
and x86_64 ABI also expectes float128 to use SSE registers [1]
(although it is not clear on how future implementation might implement
it).

Checked on x86_64-linux-gnu.

[1] https://github.com/hjl-tools/x86-psABI/wiki/X86-psABI
2020-04-17 11:42:29 -03:00
..
64
fpu x86_64: Add SSE sfp-exceptions 2020-04-17 11:42:29 -03:00
multiarch Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
nptl nptl: Remove x86_64 cancellation assembly implementations [BZ #25765] 2020-04-03 10:47:59 -03:00
x32 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
____longjmp_chk.S
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abort-instr.h
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bzero.S
configure x86-64: Compile branred.c with -mprefer-vector-width=128 [BZ #24603] 2019-07-24 14:48:43 -07:00
configure.ac x86-64: Compile branred.c with -mprefer-vector-width=128 [BZ #24603] 2019-07-24 14:48:43 -07:00
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dl-runtime.c
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Implies
isa.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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l10nflist.c
ldbl2mpn.c
link-defines.sym
locale-defines.sym
localplt.data ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] 2020-02-15 11:01:23 +01:00
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Makefile Rename the glibc.tune namespace to glibc.cpu 2018-08-02 23:49:19 +05:30
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memcpy.S
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mp_clz_tab.c
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preconfigure
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rtld-offsets.sym
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strcasecmp_l-nonascii.c
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strcasecmp.S
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strncase.S
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strnlen.S
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tls-macros.h
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tlsdesc.sym
tst-audit3.c
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tst-auditmod3a.c
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tst-auditmod4a.c
tst-auditmod4b.c
tst-auditmod5a.c
tst-auditmod5b.c
tst-auditmod6a.c
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tst-avx512mod.c
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tst-avxmod.c
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tst-quad1pie.c
tst-quad2.c
tst-quad2pie.c
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tst-quadmod2pie.S
tst-split-dynreloc.c
tst-split-dynreloc.lds
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tst-ssemod.c
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Versions Move __fentry__ version definition to sysdeps/{i386,x86_64} 2018-08-10 09:07:44 +02:00
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wmemset.S
wordcopy.c