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author | Igor Zamyatin <igor.zamyatin@intel.com> | 2014-03-13 11:10:22 -0700 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2014-03-13 11:19:08 -0700 |
commit | 2d63a517e4084ec80403cd9f278690fa8b676cc4 (patch) | |
tree | d5d5dd025d9a59bd41fedf9c16799271b5dbb722 /sysdeps/x86_64/tst-audit10.c | |
parent | 44c4e5d598bfcbb309f05ceb7a57ab02662e7f34 (diff) | |
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Save and restore AVX-512 zmm registers to x86-64 ld.so
AVX-512 ISA adds 512-bit zmm registers. This patch updates
_dl_runtime_profile to pass zmm registers to run-time audit. It also
changes _dl_x86_64_save_sse and _dl_x86_64_restore_sse to upport zmm
registers, which are called when only when RTLD_PREPARE_FOREIGN_CALL
is used. Its performance impact is minimum.
* config.h.in (HAVE_AVX512_SUPPORT): New #undef.
(HAVE_AVX512_ASM_SUPPORT): Likewise.
* sysdeps/x86_64/bits/link.h (La_x86_64_zmm): New.
(La_x86_64_vector): Add zmm.
* sysdeps/x86_64/Makefile (tests): Add tst-audit10.
(modules-names): Add tst-auditmod10a and tst-auditmod10b.
($(objpfx)tst-audit10): New target.
($(objpfx)tst-audit10.out): Likewise.
(tst-audit10-ENV): New.
(AVX512-CFLAGS): Likewise.
(CFLAGS-tst-audit10.c): Likewise.
(CFLAGS-tst-auditmod10a.c): Likewise.
(CFLAGS-tst-auditmod10b.c): Likewise.
* sysdeps/x86_64/configure.ac: Set config-cflags-avx512,
HAVE_AVX512_SUPPORT and HAVE_AVX512_ASM_SUPPORT.
* sysdeps/x86_64/configure: Regenerated.
* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Add
AVX-512 zmm register support.
(_dl_x86_64_save_sse): Likewise.
(_dl_x86_64_restore_sse): Likewise.
* sysdeps/x86_64/dl-trampoline.h: Updated to support different
size vector registers.
* sysdeps/x86_64/link-defines.sym (YMM_SIZE): New.
(ZMM_SIZE): Likewise.
* sysdeps/x86_64/tst-audit10.c: New file.
* sysdeps/x86_64/tst-auditmod10a.c: Likewise.
* sysdeps/x86_64/tst-auditmod10b.c: Likewise.
Diffstat (limited to 'sysdeps/x86_64/tst-audit10.c')
-rw-r--r-- | sysdeps/x86_64/tst-audit10.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sysdeps/x86_64/tst-audit10.c b/sysdeps/x86_64/tst-audit10.c new file mode 100644 index 0000000000..24c9696839 --- /dev/null +++ b/sysdeps/x86_64/tst-audit10.c @@ -0,0 +1,70 @@ +/* Copyright (C) 2012-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* Test case for x86-64 preserved registers in dynamic linker. */ + +#ifdef __AVX512F__ +#include <stdlib.h> +#include <string.h> +#include <cpuid.h> +#include <immintrin.h> + +static int +avx512_enabled (void) +{ + unsigned int eax, ebx, ecx, edx; + + if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0 + || (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE)) + return 0; + + __cpuid_count (7, 0, eax, ebx, ecx, edx); + if (!(ebx & bit_AVX512F)) + return 0; + + asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0)); + + /* Verify that ZMM, YMM and XMM states are enabled. */ + return (eax & 0xe6) == 0xe6; +} + + +extern __m512i audit_test (__m512i, __m512i, __m512i, __m512i, + __m512i, __m512i, __m512i, __m512i); +int +main (void) +{ + /* Run AVX512 test only if AVX512 is supported. */ + if (avx512_enabled ()) + { + __m512i zmm = _mm512_setzero_si512 (); + __m512i ret = audit_test (zmm, zmm, zmm, zmm, zmm, zmm, zmm, zmm); + + zmm = _mm512_set1_epi64 (0x12349876); + + if (memcmp (&zmm, &ret, sizeof (ret))) + abort (); + } + return 0; +} +#else +int +main (void) +{ + return 0; +} +#endif |