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| -rw-r--r-- | lib/libc/arch/sparc64/SYS.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/lib/libc/arch/sparc64/SYS.h b/lib/libc/arch/sparc64/SYS.h new file mode 100644 index 00000000000..957689612b9 --- /dev/null +++ b/lib/libc/arch/sparc64/SYS.h @@ -0,0 +1,126 @@ +/* $OpenBSD: SYS.h,v 1.1 2001/08/28 21:59:43 art 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 + * + * from: Header: SYS.h,v 1.2 92/07/03 18:57:00 torek Exp + * $NetBSD: SYS.h,v 1.6 2001/07/23 07:26:50 thorpej 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 CALL(name) \ + PIC_PROLOGUE(%g1,%g2); \ + sethi %hi(name),%g2; \ + or %g2,%lo(name),%g2; \ + ldx [%g1+%g2],%g2; \ + jmp %g2; \ + nop +#else +#define CALL(name) \ + sethi %hi(name),%g1; or %lo(name),%g1,%g1; \ + jmp %g1; nop +#endif +#define ERROR() CALL(_C_LABEL(__cerror)) + +/* + * 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,y) \ + ENTRY(x); mov _CAT(SYS_,y),%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1: + +#define SYSCALL(x) \ + _SYSCALL(x,x) + +/* + * 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() + +/* + * SYSCALL_NOERROR is like SYSCALL, except it's used for syscalls + * that never fail. + * + * XXX - This should be optimized. + */ +#define SYSCALL_NOERROR(x) \ + ENTRY(x); mov _CAT(SYS_,x),%g1; t ST_SYSCALL + +/* + * RSYSCALL_NOERROR is like RSYSCALL, except it's used for syscalls + * that never fail. + * + * XXX - This should be optimized. + */ +#define RSYSCALL_NOERROR(x) \ + ENTRY(x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \ + t ST_SYSCALL + +/* + * PSEUDO_NOERROR(x,y) is like RSYSCALL_NOERROR(y) except that the name is x. + */ +#define PSEUDO_NOERROR(x,y) \ + ENTRY(x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \ + t ST_SYSCALL + + .globl _C_LABEL(__cerror) |