patch-2.1.44 linux/arch/sparc64/lib/VIS.h

• Lines: 114
• Date: Mon Jul 7 08:18:55 1997
• Orig file: v2.1.43/linux/arch/sparc64/lib/VIS.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.43/linux/arch/sparc64/lib/VIS.h linux/arch/sparc64/lib/VIS.h
@@ -0,0 +1,113 @@
+/* $Id: VIS.h,v 1.3 1997/06/27 14:53:18 jj Exp $
+ * VIS.h: High speed copy/clear operations utilizing the UltraSparc
+ *        Visual Instruction Set.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+	/* VIS code can be used for numerous copy/set operation variants.
+	 * It can be made to work in the kernel, one single instance,
+	 * for all of memcpy, copy_to_user, and copy_from_user by setting
+	 * the ASI src/dest globals correctly.  Furthermore it can
+	 * be used for kernel-->kernel page copies as well, a hook label
+	 * is put in here just for this purpose.
+	 *
+	 * For userland, compiling this without __KERNEL__ defined makes
+	 * it work just fine as a generic libc bcopy and memcpy.
+	 * If for userland it is compiled with a 32bit gcc (but you need
+	 * -Wa,-Av9a), the code will just rely on lower 32bits of
+	 * IEU registers, if you compile it with 64bit gcc (ie. define
+	 * __sparc_v9__), the code will use full 64bit.
+	 */
+
+#ifndef __VIS_H
+#define __VIS_H
+	 
+#ifdef __KERNEL__
+#include <asm/head.h>
+#include <asm/asi.h>
+#else
+#define ASI_P			0x80 /* Primary, implicit			*/
+#define ASI_S			0x81 /* Secondary, implicit			*/
+#define ASI_BLK_COMMIT_P	0xe0 /* Primary, blk store commit		*/
+#define ASI_BLK_COMMIT_S	0xe1 /* Secondary, blk store commit		*/
+#define ASI_BLK_P		0xf0 /* Primary, blk ld/st			*/
+#define ASI_BLK_S		0xf1 /* Secondary, blk ld/st			*/
+#define FPRS_FEF		0x04
+#endif
+
+	/* I'm telling you, they really did this chip right.
+	 * Perhaps the SunSoft folks should visit some of the
+	 * people in Sun Microelectronics and start some brain
+	 * cell exchange program...
+	 */
+#define ASI_BLK_XOR		(ASI_P ^ ASI_BLK_P)
+
+#define	asi_src			%o3
+#define asi_dest		%o4
+
+#ifdef __KERNEL__
+#define ASI_SETSRC_BLK		wr	asi_src, 0, %asi;
+#define ASI_SETSRC_NOBLK	wr	asi_src, ASI_BLK_XOR, %asi;
+#define ASI_SETDST_BLK		wr	asi_dest, 0, %asi;
+#define ASI_SETDST_NOBLK	wr	asi_dest, ASI_BLK_XOR, %asi;
+#define ASIBLK			%asi
+#define ASINORMAL		%asi
+#define LDUB			lduba
+#define LDUH			lduha
+#define LDUW			lduwa
+#define LDX			ldxa
+#define LDD			ldda
+#define LDDF			ldda
+#define LDBLK			ldda
+#define STB			stba
+#define STH			stha
+#define STW			stwa
+#define STD			stda
+#define STX			stxa
+#define STDF			stda
+#define STBLK			stda
+#else
+#define ASI_SETSRC_BLK
+#define ASI_SETSRC_NOBLK
+#define ASI_SETDST_BLK
+#define ASI_SETDST_NOBLK
+#define ASI_SETDST_SPECIAL
+#define ASIBLK			%asi
+#define ASINORMAL
+#define LDUB			ldub
+#define LDUH			lduh
+#define LDUW			lduw
+#define LDD			ldd
+#define LDX			ldx
+#define LDDF			ldd
+#define LDBLK			ldda
+#define STB			stb
+#define STH			sth
+#define STW			stw
+#define STD			std
+#define STX			stx
+#define STDF			std
+#define STBLK			stda
+#endif
+
+#ifdef __KERNEL__
+
+#define REGS_64BIT
+
+#else
+
+#ifndef REGS_64BIT
+#ifdef __sparc_v9__
+#define REGS_64BIT
+#endif
+#endif
+
+#endif
+
+#ifndef REGS_64BIT
+#define	xcc	icc
+#endif
+
+#endif