diff options
Diffstat (limited to 'sys/compat/linux/linux_vdso.h')
| -rw-r--r-- | sys/compat/linux/linux_vdso.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_vdso.h b/sys/compat/linux/linux_vdso.h new file mode 100644 index 000000000000..a3ee63de5ce4 --- /dev/null +++ b/sys/compat/linux/linux_vdso.h @@ -0,0 +1,65 @@ +/*- + * Copyright (c) 2013 Dmitry Chagin + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer + * in this position and unchanged. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LINUX_VDSO_H_ +#define _LINUX_VDSO_H_ + +#include <sys/types.h> + +struct linux_vdso_sym { + SLIST_ENTRY(linux_vdso_sym) sym; + uint32_t size; + uintptr_t * ptr; + char symname[]; +}; + +vm_object_t __elfN(linux_shared_page_init)(char **); +void __elfN(linux_shared_page_fini)(vm_object_t); +void __elfN(linux_vdso_fixup)(struct sysentvec *); +void __elfN(linux_vdso_reloc)(struct sysentvec *, int); +void __elfN(linux_vdso_sym_init)(struct linux_vdso_sym *); + +#define LINUX_VDSO_SYM_INTPTR(name) \ +uintptr_t name; \ +LINUX_VDSO_SYM_DEFINE(name) + +#define LINUX_VDSO_SYM_CHAR(name) \ +const char * name; \ +LINUX_VDSO_SYM_DEFINE(name) + +#define LINUX_VDSO_SYM_DEFINE(name) \ +static struct linux_vdso_sym name ## sym = { \ + .symname = #name, \ + .size = sizeof(#name), \ + .ptr = (uintptr_t *)&name \ +}; \ +SYSINIT(__elfN(name ## _sym_init), SI_SUB_EXEC, \ + SI_ORDER_FIRST, __elfN(linux_vdso_sym_init), &name ## sym); \ +struct __hack + +#endif /* _LINUX_VDSO_H_ */ |