diff options
author | Adrian Bunk <bunk@stusta.de> | 2007-07-31 00:38:19 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-31 15:39:39 -0700 |
commit | 99eb8a550dbccc0e1f6c7e866fe421810e0585f6 (patch) | |
tree | 130c6e3338a0655ba74355eba83afab9261e1ed0 /include/asm-arm26/unaligned.h | |
parent | 0d0ed42e5ca2e22465c591341839c18025748fe8 (diff) | |
download | linux-99eb8a550dbccc0e1f6c7e866fe421810e0585f6.tar.gz linux-99eb8a550dbccc0e1f6c7e866fe421810e0585f6.tar.bz2 linux-99eb8a550dbccc0e1f6c7e866fe421810e0585f6.zip |
Remove the arm26 port
The arm26 port has been in a state where it was far from even compiling
for quite some time.
Ian Molton agreed with the removal.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-arm26/unaligned.h')
-rw-r--r-- | include/asm-arm26/unaligned.h | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/include/asm-arm26/unaligned.h b/include/asm-arm26/unaligned.h deleted file mode 100644 index d992782089fd..000000000000 --- a/include/asm-arm26/unaligned.h +++ /dev/null @@ -1,118 +0,0 @@ -#ifndef __ASM_ARM_UNALIGNED_H -#define __ASM_ARM_UNALIGNED_H - -#include <asm/types.h> - -extern int __bug_unaligned_x(void *ptr); - -/* - * What is the most efficient way of loading/storing an unaligned value? - * - * That is the subject of this file. Efficiency here is defined as - * minimum code size with minimum register usage for the common cases. - * It is currently not believed that long longs are common, so we - * trade efficiency for the chars, shorts and longs against the long - * longs. - * - * Current stats with gcc 2.7.2.2 for these functions: - * - * ptrsize get: code regs put: code regs - * 1 1 1 1 2 - * 2 3 2 3 2 - * 4 7 3 7 3 - * 8 20 6 16 6 - * - * gcc 2.95.1 seems to code differently: - * - * ptrsize get: code regs put: code regs - * 1 1 1 1 2 - * 2 3 2 3 2 - * 4 7 4 7 4 - * 8 19 8 15 6 - * - * which may or may not be more efficient (depending upon whether - * you can afford the extra registers). Hopefully the gcc 2.95 - * is inteligent enough to decide if it is better to use the - * extra register, but evidence so far seems to suggest otherwise. - * - * Unfortunately, gcc is not able to optimise the high word - * out of long long >> 32, or the low word from long long << 32 - */ - -#define __get_unaligned_2_le(__p) \ - (__p[0] | __p[1] << 8) - -#define __get_unaligned_4_le(__p) \ - (__p[0] | __p[1] << 8 | __p[2] << 16 | __p[3] << 24) - -#define __get_unaligned_le(ptr) \ - ({ \ - __typeof__(*(ptr)) __v; \ - __u8 *__p = (__u8 *)(ptr); \ - switch (sizeof(*(ptr))) { \ - case 1: __v = *(ptr); break; \ - case 2: __v = __get_unaligned_2_le(__p); break; \ - case 4: __v = __get_unaligned_4_le(__p); break; \ - case 8: { \ - unsigned int __v1, __v2; \ - __v2 = __get_unaligned_4_le((__p+4)); \ - __v1 = __get_unaligned_4_le(__p); \ - __v = ((unsigned long long)__v2 << 32 | __v1); \ - } \ - break; \ - default: __v = __bug_unaligned_x(__p); break; \ - } \ - __v; \ - }) - -static inline void __put_unaligned_2_le(__u32 __v, register __u8 *__p) -{ - *__p++ = __v; - *__p++ = __v >> 8; -} - -static inline void __put_unaligned_4_le(__u32 __v, register __u8 *__p) -{ - __put_unaligned_2_le(__v >> 16, __p + 2); - __put_unaligned_2_le(__v, __p); -} - -static inline void __put_unaligned_8_le(const unsigned long long __v, register __u8 *__p) -{ - /* - * tradeoff: 8 bytes of stack for all unaligned puts (2 - * instructions), or an extra register in the long long - * case - go for the extra register. - */ - __put_unaligned_4_le(__v >> 32, __p+4); - __put_unaligned_4_le(__v, __p); -} - -/* - * Try to store an unaligned value as efficiently as possible. - */ -#define __put_unaligned_le(val,ptr) \ - ({ \ - switch (sizeof(*(ptr))) { \ - case 1: \ - *(ptr) = (val); \ - break; \ - case 2: __put_unaligned_2_le((val),(__u8 *)(ptr)); \ - break; \ - case 4: __put_unaligned_4_le((val),(__u8 *)(ptr)); \ - break; \ - case 8: __put_unaligned_8_le((val),(__u8 *)(ptr)); \ - break; \ - default: __bug_unaligned_x(ptr); \ - break; \ - } \ - (void) 0; \ - }) - -/* - * Select endianness - */ -#define get_unaligned __get_unaligned_le -#define put_unaligned __put_unaligned_le - -#endif |