174 lines
4.2 KiB
Diff
174 lines
4.2 KiB
Diff
|
From: Ralf Baechle <ralf@linux-mips.org>
|
||
|
|
Date: Thu, 30 Apr 2009 16:14:56 +0000 (+0200)
|
||
|
|
Subject: MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0.
|
||
|
|
X-Git-Url: http://www.linux-mips.org/git?p=linux.git;a=commitdiff_plain;h=a1b68289997030df64cba8478d5767fe10e42a58
|
||
|
|
|
||
|
|
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>
|
||
|
|
---
|
||
|
|
|
||
|
|
diff --git a/arch/mips/include/asm/div64.h b/arch/mips/include/asm/div64.h
|
||
|
|
index d1d6991..dc5ea57 100644
|
||
|
|
--- a/arch/mips/include/asm/div64.h
|
||
|
|
+++ b/arch/mips/include/asm/div64.h
|
||
|
|
@@ -6,105 +6,63 @@
|
||
|
|
* License. See the file "COPYING" in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*/
|
||
|
|
-#ifndef _ASM_DIV64_H
|
||
|
|
-#define _ASM_DIV64_H
|
||
|
|
+#ifndef __ASM_DIV64_H
|
||
|
|
+#define __ASM_DIV64_H
|
||
|
|
|
||
|
|
-#include <linux/types.h>
|
||
|
|
+#include <asm-generic/div64.h>
|
||
|
|
|
||
|
|
-#if (_MIPS_SZLONG == 32)
|
||
|
|
+#if BITS_PER_LONG == 64
|
||
|
|
|
||
|
|
-#include <asm/compiler.h>
|
||
|
|
+#include <linux/types.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* No traps on overflows for any of these...
|
||
|
|
*/
|
||
|
|
|
||
|
|
-#define do_div64_32(res, high, low, base) ({ \
|
||
|
|
- unsigned long __quot32, __mod32; \
|
||
|
|
- unsigned long __cf, __tmp, __tmp2, __i; \
|
||
|
|
- \
|
||
|
|
- __asm__(".set push\n\t" \
|
||
|
|
- ".set noat\n\t" \
|
||
|
|
- ".set noreorder\n\t" \
|
||
|
|
- "move %2, $0\n\t" \
|
||
|
|
- "move %3, $0\n\t" \
|
||
|
|
- "b 1f\n\t" \
|
||
|
|
- " li %4, 0x21\n" \
|
||
|
|
- "0:\n\t" \
|
||
|
|
- "sll $1, %0, 0x1\n\t" \
|
||
|
|
- "srl %3, %0, 0x1f\n\t" \
|
||
|
|
- "or %0, $1, %5\n\t" \
|
||
|
|
- "sll %1, %1, 0x1\n\t" \
|
||
|
|
- "sll %2, %2, 0x1\n" \
|
||
|
|
- "1:\n\t" \
|
||
|
|
- "bnez %3, 2f\n\t" \
|
||
|
|
- " sltu %5, %0, %z6\n\t" \
|
||
|
|
- "bnez %5, 3f\n" \
|
||
|
|
- "2:\n\t" \
|
||
|
|
- " addiu %4, %4, -1\n\t" \
|
||
|
|
- "subu %0, %0, %z6\n\t" \
|
||
|
|
- "addiu %2, %2, 1\n" \
|
||
|
|
- "3:\n\t" \
|
||
|
|
- "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)); \
|
||
|
|
- \
|
||
|
|
- (res) = __quot32; \
|
||
|
|
- __mod32; })
|
||
|
|
-
|
||
|
|
-#define do_div(n, base) ({ \
|
||
|
|
- unsigned long long __quot; \
|
||
|
|
- unsigned long __mod; \
|
||
|
|
- unsigned long long __div; \
|
||
|
|
- unsigned long __upper, __low, __high, __base; \
|
||
|
|
- \
|
||
|
|
- __div = (n); \
|
||
|
|
- __base = (base); \
|
||
|
|
- \
|
||
|
|
- __high = __div >> 32; \
|
||
|
|
- __low = __div; \
|
||
|
|
- __upper = __high; \
|
||
|
|
- \
|
||
|
|
- if (__high) \
|
||
|
|
- __asm__("divu $0, %z2, %z3" \
|
||
|
|
- : "=h" (__upper), "=l" (__high) \
|
||
|
|
- : "Jr" (__high), "Jr" (__base) \
|
||
|
|
- : GCC_REG_ACCUM); \
|
||
|
|
- \
|
||
|
|
- __mod = do_div64_32(__low, __upper, __low, __base); \
|
||
|
|
- \
|
||
|
|
- __quot = __high; \
|
||
|
|
- __quot = __quot << 32 | __low; \
|
||
|
|
- (n) = __quot; \
|
||
|
|
- __mod; })
|
||
|
|
-
|
||
|
|
-#endif /* (_MIPS_SZLONG == 32) */
|
||
|
|
-
|
||
|
|
-#if (_MIPS_SZLONG == 64)
|
||
|
|
-
|
||
|
|
-/*
|
||
|
|
- * Hey, we're already 64-bit, no
|
||
|
|
- * need to play games..
|
||
|
|
- */
|
||
|
|
-#define do_div(n, base) ({ \
|
||
|
|
- unsigned long __quot; \
|
||
|
|
- unsigned int __mod; \
|
||
|
|
- unsigned long __div; \
|
||
|
|
- unsigned int __base; \
|
||
|
|
- \
|
||
|
|
- __div = (n); \
|
||
|
|
- __base = (base); \
|
||
|
|
- \
|
||
|
|
- __mod = __div % __base; \
|
||
|
|
- __quot = __div / __base; \
|
||
|
|
- \
|
||
|
|
- (n) = __quot; \
|
||
|
|
- __mod; })
|
||
|
|
+#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; \
|
||
|
|
+})
|
||
|
|
|
||
|
|
-#endif /* (_MIPS_SZLONG == 64) */
|
||
|
|
+#endif /* BITS_PER_LONG == 64 */
|
||
|
|
|
||
|
|
-#endif /* _ASM_DIV64_H */
|
||
|
|
+#endif /* __ASM_DIV64_H */
|