patch-2.1.44 linux/arch/sparc/mm/turbosparc.S

• Lines: 47
• Date: Mon Jul 7 08:18:54 1997
• Orig file: v2.1.43/linux/arch/sparc/mm/turbosparc.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.43/linux/arch/sparc/mm/turbosparc.S linux/arch/sparc/mm/turbosparc.S
@@ -0,0 +1,46 @@
+/* $Id: turbosparc.S,v 1.1 1997/06/24 15:48:05 jj Exp $
+ * turbosparc.S: High speed Hypersparc mmu/cache operations.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <asm/ptrace.h>
+#include <asm/psr.h>
+#include <asm/asi.h>
+#include <asm/page.h>
+#include <asm/pgtsrmmu.h>
+
+#define WINDOW_FLUSH(tmp1, tmp2)					\
+	mov	0, tmp1;						\
+98:	ld	[%g6 + AOFF_task_tss + AOFF_thread_uwinmask], tmp2;	\
+	orcc	%g0, tmp2, %g0;						\
+	add	tmp1, 1, tmp1;						\
+	bne	98b;							\
+	 save	%sp, -64, %sp;						\
+99:	subcc	tmp1, 1, tmp1;						\
+	bne	99b;							\
+	 restore %g0, %g0, %g0;
+
+	.text
+	.align	4
+
+	.globl	turbosparc_flush_cache_all
+	.globl	turbosparc_flush_sig_insns
+
+turbosparc_flush_cache_all:
+	WINDOW_FLUSH(%g4, %g5)
+	sethi	%hi(vac_cache_size), %g4
+	ld	[%g4 + %lo(vac_cache_size)], %g5
+	sethi	%hi(vac_line_size), %g1
+	ld	[%g1 + %lo(vac_line_size)], %g2
+1:	
+	subcc	%g5, %g2, %g5
+	bne	1b
+	 sta	%g0, [%g5] ASI_M_DATAC_TAG
+	retl
+	 sta	%g0, [%g0] ASI_M_IC_FLCLEAR
+
+turbosparc_flush_sig_insns:
+	retl
+	 nop