SYS.h from NetBSD. Not fixed yet for libc_r.

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)