glibc/sysdeps/x86_64/tst-audit10.c
Igor Zamyatin 2d63a517e4 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.
2014-03-13 11:19:08 -07:00

71 lines
1.8 KiB
C

/* 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