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/*
* arch/sh/lib/io.c - SH32 optimized I/O routines
*
* Copyright (C) 2000 Stuart Menefy
* Copyright (C) 2005 Paul Mundt
*
* Provide real functions which expand to whatever the header file defined.
* Also definitions of machine independent IO functions.
*
* 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.
*/
#include <linux/module.h>
#include <linux/io.h>
void __raw_readsl(const void __iomem *addr, void *datap, int len)
{
u32 *data;
for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--)
*data++ = __raw_readl(addr);
if (likely(len >= (0x20 >> 2))) {
int tmp2, tmp3, tmp4, tmp5, tmp6;
__asm__ __volatile__(
"1:
\t"
"mov.l @%7, r0
\t"
"mov.l @%7, %2
\t"
#ifdef CONFIG_CPU_SH4
"movca.l r0, @%0
\t"
#else
"mov.l r0, @%0
\t"
#endif
"mov.l @%7, %3
\t"
"mov.l @%7, %4
\t"
"mov.l @%7, %5
\t"
"mov.l @%7, %6
\t"
"mov.l @%7, r7
\t"
"mov.l @%7, r0
\t"
"mov.l %2, @(0x04,%0)
\t"
"mov #0x20>>2, %2
\t"
"mov.l %3, @(0x08,%0)
\t"
"sub %2, %1
\t"
"mov.l %4, @(0x0c,%0)
\t"
"cmp/hi %1, %2 ! T if 32 > len
\t"
"mov.l %5, @(0x10,%0)
\t"
"mov.l %6, @(0x14,%0)
\t"
"mov.l r7, @(0x18,%0)
\t"
"mov.l r0, @(0x1c,%0)
\t"
"bf.s 1b
\t"
" add #0x20, %0
\t"
: "=&r" (data), "=&r" (len),
"=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4),
"=&r" (tmp5), "=&r" (tmp6)
: "r"(addr), "0" (data), "1" (len)
: "r0", "r7", "t", "memory");
}
for (; len != 0; len--)
*data++ = __raw_readl(addr);
}
EXPORT_SYMBOL(__raw_readsl);
void __raw_writesl(void __iomem *addr, const void *data, int len)
{
if (likely(len != 0)) {
int tmp1;
__asm__ __volatile__ (
"1:
\t"
"mov.l @%0+, %1
\t"
"dt %3
\t"
"bf.s 1b
\t"
" mov.l %1, @%4
\t"
: "=&r" (data), "=&r" (tmp1)
: "0" (data), "r" (len), "r"(addr)
: "t", "memory");
}
}
EXPORT_SYMBOL(__raw_writesl);
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