diff options
Diffstat (limited to 'lib/libc/amd64/SYS.h')
| -rw-r--r-- | lib/libc/amd64/SYS.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/lib/libc/amd64/SYS.h b/lib/libc/amd64/SYS.h new file mode 100644 index 0000000..61d7ab4 --- /dev/null +++ b/lib/libc/amd64/SYS.h @@ -0,0 +1,73 @@ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * 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. + * 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. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. + * + * @(#)SYS.h 5.5 (Berkeley) 5/7/91 + * $FreeBSD$ + */ + +#include <sys/syscall.h> +#include <machine/asm.h> + +#ifdef PIC +#define RSYSCALL(x) ENTRY(__CONCAT(__sys_,x)); \ + .weak CNAME(x); \ + .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ + .weak CNAME(__CONCAT(_,x)); \ + .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ + mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ + 2: movq PIC_GOT(HIDENAME(cerror)),%rcx; jmp *%rcx; \ + END(__CONCAT(__sys_,x)) + +#define PSEUDO(x) ENTRY(__CONCAT(__sys_,x)); \ + .weak CNAME(__CONCAT(_,x)); \ + .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ + mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret ; \ + 2: movq PIC_GOT(HIDENAME(cerror)),%rcx; jmp *%rcx; \ + END(__CONCAT(__sys_,x)) +#else +#define RSYSCALL(x) ENTRY(__CONCAT(__sys_,x)); \ + .weak CNAME(x); \ + .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ + .weak CNAME(__CONCAT(_,x)); \ + .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ + mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ + 2: jmp HIDENAME(cerror); \ + END(__CONCAT(__sys_,x)) + +#define PSEUDO(x) ENTRY(__CONCAT(__sys_,x)); \ + .weak CNAME(__CONCAT(_,x)); \ + .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ + mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ + 2: jmp HIDENAME(cerror); \ + END(__CONCAT(__sys_,x)) +#endif + +#define KERNCALL movq %rcx, %r10; syscall |
