diff options
Diffstat (limited to 'sys/lib/libkern/arch/sparc/SYS.h')
| -rw-r--r-- | sys/lib/libkern/arch/sparc/SYS.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/sys/lib/libkern/arch/sparc/SYS.h b/sys/lib/libkern/arch/sparc/SYS.h new file mode 100644 index 00000000000..74b3cac68d4 --- /dev/null +++ b/sys/lib/libkern/arch/sparc/SYS.h @@ -0,0 +1,91 @@ +/* $NetBSD: SYS.h,v 1.2 1994/10/26 06:39:53 cgd Exp $ */ + +/*- + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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 8.1 (Berkeley) 6/4/93 + * + * Header: SYS.h,v 1.2 92/07/03 18:57:00 torek Exp + */ + +#include <machine/asm.h> +#include <sys/syscall.h> +#include <machine/trap.h> + +#ifdef __STDC__ +#define _CAT(x,y) x##y +#else +#define _CAT(x,y) x/**/y +#endif + +/* + * ERROR branches to cerror. This is done with a macro so that I can + * change it to be position independent later, if need be. + */ +#ifdef PIC +#define ERROR() \ + PIC_PROLOGUE(%g1,%g2); \ + ld [%g1+cerror],%g2; jmp %g2; nop +#else +#define ERROR() \ + sethi %hi(cerror),%g1; or %lo(cerror),%g1,%g1; jmp %g1; nop +#endif + +/* + * SYSCALL is used when further action must be taken before returning. + * Note that it adds a `nop' over what we could do, if we only knew what + * came at label 1.... + */ +#define SYSCALL(x) \ + ENTRY(x); mov _CAT(SYS_,x),%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1: + +/* + * RSYSCALL is used when the system call should just return. Here + * we use the SYSCALL_G2RFLAG to put the `success' return address in %g2 + * and avoid a branch. + */ +#define RSYSCALL(x) \ + ENTRY(x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \ + t ST_SYSCALL; ERROR() + +/* + * PSEUDO(x,y) is like RSYSCALL(y) except that the name is x. + */ +#define PSEUDO(x,y) \ + ENTRY(x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \ + t ST_SYSCALL; ERROR() + + .globl cerror |