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.

1 files changed, 65 insertions, 0 deletions

diff --git a/sysdeps/x86_64/tst-auditmod10a.c b/sysdeps/x86_64/tst-auditmod10a.c
new file mode 100644
index 0000000000..ea1809c369
--- /dev/null
+++ b/sysdeps/x86_64/tst-auditmod10a.c
@@ -0,0 +1,65 @@
+/* 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 <immintrin.h>
+
+__m512i
+audit_test (__m512i x0, __m512i x1, __m512i x2, __m512i x3,
+	    __m512i x4, __m512i x5, __m512i x6, __m512i x7)
+{
+  __m512i zmm;
+
+  zmm = _mm512_set1_epi64 (1);
+  if (memcmp (&zmm, &x0, sizeof (zmm)))
+    abort ();
+
+  zmm = _mm512_set1_epi64 (2);
+  if (memcmp (&zmm, &x1, sizeof (zmm)))
+    abort ();
+
+  zmm = _mm512_set1_epi64 (3);
+  if (memcmp (&zmm, &x2, sizeof (zmm)))
+    abort ();
+
+  zmm = _mm512_set1_epi64 (4);
+  if (memcmp (&zmm, &x3, sizeof (zmm)))
+    abort ();
+
+  zmm = _mm512_set1_epi64 (5);
+  if (memcmp (&zmm, &x4, sizeof (zmm)))
+    abort ();
+
+  zmm = _mm512_set1_epi64 (6);
+  if (memcmp (&zmm, &x5, sizeof (zmm)))
+    abort ();
+
+  zmm = _mm512_set1_epi64 (7);
+  if (memcmp (&zmm, &x6, sizeof (zmm)))
+    abort ();
+
+  zmm = _mm512_set1_epi64 (8);
+  if (memcmp (&zmm, &x7, sizeof (zmm)))
+    abort ();
+
+  return _mm512_setzero_si512 ();
+}
+#endif