patch-2.4.19 linux-2.4.19/arch/mips/mm/pg-andes.S

• Lines: 67
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/mm/pg-andes.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/mm/pg-andes.S linux-2.4.19/arch/mips/mm/pg-andes.S
@@ -0,0 +1,66 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * r4xx0.c: R4000 processor variant specific MMU/Cache routines.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ * Copyright (C) 1997,  1998,  1999,  2000 Ralf Baechle ralf@gnu.org
+ */
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/offset.h>
+
+	.text
+	.set	mips4
+	.set	noat
+
+/*
+ * This is suboptimal for 32-bit kernels; we assume that R10000 is only used
+ * with 64-bit kernels.  The prefetch offsets have been experimentally tuned
+ * an Origin 200.
+ */
+
+LEAF(andes_clear_page)
+	LONG_ADDIU	AT, a0, _PAGE_SIZE
+1:	pref		7, 512(a0)
+	LONG_S		zero, 0*SZREG(a0)
+	LONG_S		zero, 1*SZREG(a0)
+	LONG_S		zero, 2*SZREG(a0)
+	LONG_S		zero, 3*SZREG(a0)
+	LONG_ADDIU	a0, a0, 8*SZREG
+	LONG_S		zero, -4*SZREG(a0)
+	LONG_S		zero, -3*SZREG(a0)
+	LONG_S		zero, -2*SZREG(a0)
+	LONG_S		zero, -1*SZREG(a0)
+	bne		AT, a0, 1b
+	j		ra
+	.end		andes_clear_page
+	END(andes_clear_page)
+
+LEAF(andes_copy_page)
+	LONG_ADDIU	AT, a0, _PAGE_SIZE
+1:	pref		0, 2*128(a1)
+	pref		1, 2*128(a0)
+	LONG_L		a3, 0*SZREG(a1)
+	LONG_L		a2, 1*SZREG8(a1)
+	LONG_L		v1, 2*SZREG(a1)
+	LONG_L		v0, 3*SZREG(a1)
+	LONG_S		a3, 0*SZREG(a0)
+	LONG_S		a2, 1*SZREG(a0)
+	LONG_S		v1, 2*SZREG(a0)
+	LONG_S		v0, 3*SZREG(a0)
+	LONG_ADDIU	a0, a0, 8*SZREG
+	LONG_ADDIU	a1, a1, 8*SZREG
+	LONG_L		a3, -4*SZREG(a1)
+	LONG_L		a2, -3*SZREG(a1)
+	LONG_L		v1, -2*SZREG(a1)
+	LONG_L		v0, -1*SZREG(a1)
+	LONG_S		a3, -4*SZREG(a0)
+	LONG_S		a2, -3*SZREG(a0)
+	LONG_S		v1, -2*SZREG(a0)
+	LONG_S		v0, -1*SZREG(a0)
+	bne		AT, a0,1b
+	j		ra
+	END(andes_copy_page)