summaryrefslogtreecommitdiff
path: root/aarch64-none-linux-gnu/libc/usr/include/sys/ifunc.h
diff options
context:
space:
mode:
Diffstat (limited to 'aarch64-none-linux-gnu/libc/usr/include/sys/ifunc.h')
-rw-r--r--aarch64-none-linux-gnu/libc/usr/include/sys/ifunc.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/aarch64-none-linux-gnu/libc/usr/include/sys/ifunc.h b/aarch64-none-linux-gnu/libc/usr/include/sys/ifunc.h
new file mode 100644
index 0000000..49ca3be
--- /dev/null
+++ b/aarch64-none-linux-gnu/libc/usr/include/sys/ifunc.h
@@ -0,0 +1,42 @@
+/* Definitions used by AArch64 indirect function resolvers.
+ Copyright (C) 2019-2023 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _SYS_IFUNC_H
+#define _SYS_IFUNC_H
+
+/* A second argument is passed to the ifunc resolver. */
+#define _IFUNC_ARG_HWCAP (1ULL << 62)
+
+/* The prototype of a gnu indirect function resolver on AArch64 is
+
+ ElfW(Addr) ifunc_resolver (uint64_t, const __ifunc_arg_t *);
+
+ the first argument should have the _IFUNC_ARG_HWCAP bit set and
+ the remaining bits should match the AT_HWCAP settings. */
+
+/* Second argument to an ifunc resolver. */
+struct __ifunc_arg_t
+{
+ unsigned long _size; /* Size of the struct, so it can grow. */
+ unsigned long _hwcap;
+ unsigned long _hwcap2;
+};
+
+typedef struct __ifunc_arg_t __ifunc_arg_t;
+
+#endif