x86-64: Verify that _dl_runtime_resolve preserves vector registers

On x86-64, _dl_runtime_resolve must preserve the first 8 vector
registers.  Add 3 _dl_runtime_resolve tests to verify that SSE,
AVX and AVX512 registers are preserved.

	* sysdeps/x86_64/Makefile (tests): Add tst-sse, tst-avx and
	tst-avx512.
	(test-extras): Add tst-avx-aux and tst-avx512-aux.
	(extra-test-objs): Add tst-avx-aux.o and tst-avx512-aux.o.
	(modules-names): Add tst-ssemod, tst-avxmod and tst-avx512mod.
	($(objpfx)tst-sse): New rule.
	($(objpfx)tst-avx): Likewise.
	($(objpfx)tst-avx512): Likewise.
	(CFLAGS-tst-avx-aux.c): New.
	(CFLAGS-tst-avxmod.c): Likewise.
	(CFLAGS-tst-avx512-aux.c): Likewise.
	(CFLAGS-tst-avx512mod.c): Likewise.
	* sysdeps/x86_64/tst-avx-aux.c: New file.
	* sysdeps/x86_64/tst-avx.c: Likewise.
	* sysdeps/x86_64/tst-avx512-aux.c: Likewise.
	* sysdeps/x86_64/tst-avx512.c: Likewise.
	* sysdeps/x86_64/tst-avx512mod.c: Likewise.
	* sysdeps/x86_64/tst-avxmod.c: Likewise.
	* sysdeps/x86_64/tst-sse.c: Likewise.
	* sysdeps/x86_64/tst-ssemod.c: Likewise.

1 files changed, 46 insertions, 0 deletions

diff --git a/sysdeps/x86_64/tst-sse.c b/sysdeps/x86_64/tst-sse.c
new file mode 100644
index 0000000000..dd1537cf27
--- /dev/null
+++ b/sysdeps/x86_64/tst-sse.c
@@ -0,0 +1,46 @@
+/* Test case for preserved SSE registers in dynamic linker.
+   Copyright (C) 2017 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/>.  */
+
+#include <immintrin.h>
+#include <stdlib.h>
+#include <string.h>
+
+extern __m128i sse_test (__m128i, __m128i, __m128i, __m128i,
+			 __m128i, __m128i, __m128i, __m128i);
+
+static int
+do_test (void)
+{
+  __m128i xmm0 = _mm_set1_epi32 (0);
+  __m128i xmm1 = _mm_set1_epi32 (1);
+  __m128i xmm2 = _mm_set1_epi32 (2);
+  __m128i xmm3 = _mm_set1_epi32 (3);
+  __m128i xmm4 = _mm_set1_epi32 (4);
+  __m128i xmm5 = _mm_set1_epi32 (5);
+  __m128i xmm6 = _mm_set1_epi32 (6);
+  __m128i xmm7 = _mm_set1_epi32 (7);
+  __m128i ret = sse_test (xmm0, xmm1, xmm2, xmm3,
+			  xmm4, xmm5, xmm6, xmm7);
+  xmm0 =  _mm_set1_epi32 (0x12349876);
+  if (memcmp (&xmm0, &ret, sizeof (ret)))
+    abort ();
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../../test-skeleton.c"