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authorH.J. Lu <hjl.tools@gmail.com>2012-10-10 07:47:59 -0700
committerH.J. Lu <hjl.tools@gmail.com>2012-10-11 16:40:01 -0700
commit11dd4af68c0ed12a96c7434b812108627c44d407 (patch)
tree4fa846359a1e48dead279703c9cc643cca202d6d /include
parent9a387d1f787f764474943294024b02258f14e80a (diff)
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Framework to test IFUNC implementations on target
Diffstat (limited to 'include')
-rw-r--r--include/ifunc-impl-list.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/include/ifunc-impl-list.h b/include/ifunc-impl-list.h
new file mode 100644
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--- /dev/null
+++ b/include/ifunc-impl-list.h
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+/* Internal header file for __libc_supported_implementations.
+ Copyright (C) 2012 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/>. */
+
+#ifndef _IFUNC_IMPL_LIST_H
+#define _IFUNC_IMPL_LIST_H 1
+
+#include <stdbool.h>
+#include <stddef.h>
+
+struct libc_ifunc_impl
+{
+ /* The name of function to be tested. */
+ const char *name;
+ /* The address of function to be tested. */
+ void (*fn) (void);
+ /* True if this implementation is usable on this machine. */
+ bool usable;
+};
+
+/* Add an IFUNC implementation, IMPL, for function FUNC, to ARRAY with
+ USABLE at index I and advance I by one. */
+#define IFUNC_IMPL_ADD(array, i, func, usable, impl) \
+ extern __typeof (func) impl attribute_hidden; \
+ (array)[i++] = (struct libc_ifunc_impl) { #impl, (void (*) (void)) impl, (usable) };
+
+/* Return the number of IFUNC implementations, N, for function FUNC if
+ string NAME matches FUNC. */
+#define IFUNC_IMPL(n, name, func, ...) \
+ if (strcmp (name, #func) == 0) \
+ { \
+ __VA_ARGS__; \
+ return n; \
+ }
+
+/* Fill ARRAY of MAX elements with IFUNC implementations for function
+ NAME and return the number of valid entries. */
+extern size_t __libc_ifunc_impl_list (const char *name,
+ struct libc_ifunc_impl *array,
+ size_t max);
+
+#endif /* ifunc-impl-list.h */