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-rw-r--r--arch/um/sys-ppc/misc.S111
1 files changed, 0 insertions, 111 deletions
diff --git a/arch/um/sys-ppc/misc.S b/arch/um/sys-ppc/misc.S
deleted file mode 100644
index 1364b7da578c..000000000000
--- a/arch/um/sys-ppc/misc.S
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * This file contains miscellaneous low-level functions.
- * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
- * and Paul Mackerras.
- *
- * A couple of functions stolen from arch/ppc/kernel/misc.S for UML
- * by Chris Emerson.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <asm/processor.h>
-#include "ppc_asm.h"
-
-#if defined(CONFIG_4xx) || defined(CONFIG_8xx)
-#define CACHE_LINE_SIZE 16
-#define LG_CACHE_LINE_SIZE 4
-#define MAX_COPY_PREFETCH 1
-#else
-#define CACHE_LINE_SIZE 32
-#define LG_CACHE_LINE_SIZE 5
-#define MAX_COPY_PREFETCH 4
-#endif /* CONFIG_4xx || CONFIG_8xx */
-
- .text
-
-/*
- * Clear a page using the dcbz instruction, which doesn't cause any
- * memory traffic (except to write out any cache lines which get
- * displaced). This only works on cacheable memory.
- */
-_GLOBAL(clear_page)
- li r0,4096/CACHE_LINE_SIZE
- mtctr r0
-#ifdef CONFIG_8xx
- li r4, 0
-1: stw r4, 0(r3)
- stw r4, 4(r3)
- stw r4, 8(r3)
- stw r4, 12(r3)
-#else
-1: dcbz 0,r3
-#endif
- addi r3,r3,CACHE_LINE_SIZE
- bdnz 1b
- blr
-
-/*
- * Copy a whole page. We use the dcbz instruction on the destination
- * to reduce memory traffic (it eliminates the unnecessary reads of
- * the destination into cache). This requires that the destination
- * is cacheable.
- */
-#define COPY_16_BYTES \
- lwz r6,4(r4); \
- lwz r7,8(r4); \
- lwz r8,12(r4); \
- lwzu r9,16(r4); \
- stw r6,4(r3); \
- stw r7,8(r3); \
- stw r8,12(r3); \
- stwu r9,16(r3)
-
-_GLOBAL(copy_page)
- addi r3,r3,-4
- addi r4,r4,-4
- li r5,4
-
-#ifndef CONFIG_8xx
-#if MAX_COPY_PREFETCH > 1
- li r0,MAX_COPY_PREFETCH
- li r11,4
- mtctr r0
-11: dcbt r11,r4
- addi r11,r11,CACHE_LINE_SIZE
- bdnz 11b
-#else /* MAX_COPY_PREFETCH == 1 */
- dcbt r5,r4
- li r11,CACHE_LINE_SIZE+4
-#endif /* MAX_COPY_PREFETCH */
-#endif /* CONFIG_8xx */
-
- li r0,4096/CACHE_LINE_SIZE
- mtctr r0
-1:
-#ifndef CONFIG_8xx
- dcbt r11,r4
- dcbz r5,r3
-#endif
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 32
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 64
- COPY_16_BYTES
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 128
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
-#endif
-#endif
-#endif
- bdnz 1b
- blr