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OpenCloudOS-Kernel/arch/mips/include/asm/div64.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Copyright (C) 2000, 2004 Maciej W. Rozycki
[NET]: div64_64 consolidate (rev3) Here is the current version of the 64 bit divide common code. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-26 10:54:23 +08:00
* Copyright (C) 2003, 07 Ralf Baechle (ralf@linux-mips.org)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
*
* 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.
*/
MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. The inline assembler used on 32-bit kernels was using the "h" constraint which was considered dangerous and removed for gcc 4.4.0. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-01 00:14:56 +08:00
#ifndef __ASM_DIV64_H
#define __ASM_DIV64_H
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. The inline assembler used on 32-bit kernels was using the "h" constraint which was considered dangerous and removed for gcc 4.4.0. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-01 00:14:56 +08:00
#include <asm-generic/div64.h>
[NET]: div64_64 consolidate (rev3) Here is the current version of the 64 bit divide common code. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-26 10:54:23 +08:00
MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. The inline assembler used on 32-bit kernels was using the "h" constraint which was considered dangerous and removed for gcc 4.4.0. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-01 00:14:56 +08:00
#if BITS_PER_LONG == 64
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. The inline assembler used on 32-bit kernels was using the "h" constraint which was considered dangerous and removed for gcc 4.4.0. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-01 00:14:56 +08:00
#include <linux/types.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* No traps on overflows for any of these...
*/
MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. The inline assembler used on 32-bit kernels was using the "h" constraint which was considered dangerous and removed for gcc 4.4.0. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-01 00:14:56 +08:00
#define __div64_32(n, base) \
({ \
unsigned long __cf, __tmp, __tmp2, __i; \
unsigned long __quot32, __mod32; \
unsigned long __high, __low; \
unsigned long long __n; \
\
__high = *__n >> 32; \
__low = __n; \
__asm__( \
" .set push \n" \
" .set noat \n" \
" .set noreorder \n" \
" move %2, $0 \n" \
" move %3, $0 \n" \
" b 1f \n" \
" li %4, 0x21 \n" \
"0: \n" \
" sll $1, %0, 0x1 \n" \
" srl %3, %0, 0x1f \n" \
" or %0, $1, %5 \n" \
" sll %1, %1, 0x1 \n" \
" sll %2, %2, 0x1 \n" \
"1: \n" \
" bnez %3, 2f \n" \
" sltu %5, %0, %z6 \n" \
" bnez %5, 3f \n" \
"2: \n" \
" addiu %4, %4, -1 \n" \
" subu %0, %0, %z6 \n" \
" addiu %2, %2, 1 \n" \
"3: \n" \
" bnez %4, 0b\n\t" \
" srl %5, %1, 0x1f\n\t" \
" .set pop" \
: "=&r" (__mod32), "=&r" (__tmp), \
"=&r" (__quot32), "=&r" (__cf), \
"=&r" (__i), "=&r" (__tmp2) \
: "Jr" (base), "0" (__high), "1" (__low)); \
\
(__n) = __quot32; \
__mod32; \
})
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. The inline assembler used on 32-bit kernels was using the "h" constraint which was considered dangerous and removed for gcc 4.4.0. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-01 00:14:56 +08:00
#endif /* BITS_PER_LONG == 64 */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0. The inline assembler used on 32-bit kernels was using the "h" constraint which was considered dangerous and removed for gcc 4.4.0. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-01 00:14:56 +08:00
#endif /* __ASM_DIV64_H */