mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-22 19:23:26 +08:00
d8834a1323
Using optimized versions of memset and memcpy from linux brings a quite
noticeable speed (x2 or better) improvement for these two functions.
Here are some numbers for test done with jadecpu
| HEAD(1)| HEAD(1)| HEAD(2)| HEAD(2)|
| | +patch | | +patch |
---------------------------+--------+--------+--------+--------+
Reset to prompt | 438ms | 330ms | 228ms | 120ms |
| | | | |
TFTP a 3MB img | 4782ms | 3428ms | 3245ms | 2820ms |
| | | | |
FATLOAD USB a 3MB img* | 8515ms | 8510ms | ------ | ------ |
| | | | |
BOOTM LZO img in RAM | 3473ms | 3168ms | 592ms | 592ms |
where CRC is | 615ms | 615ms | 54ms | 54ms |
uncompress | 2460ms | 2462ms | 450ms | 451ms |
final boot_elf | 376ms | 68ms | 65ms | 65ms |
| | | | |
BOOTM LZO img in FLASH | 3207ms | 2902ms | 1050ms | 1050ms |
where CRC is | 600ms | 600ms | 135ms | 135ms |
uncompress | 2209ms | 2211ms | 828ms | 828ms |
| | | | |
Copy 1.4MB from NOR to RAM | 134ms | 72ms | 120ms | 70ms |
(1) No dcache
(2) dcache enabled in board_init
*Does not work when dcache is on
Size impact:
C version:
text data bss dec hex filename
202862 18912 266456 488230 77326 u-boot
ASM version:
text data bss dec hex filename
203798 18912 266288 488998 77626 u-boot
222712 u-boot.bin
Signed-off-by: Matthias Weisser <weisserm@arcor.de>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
#ifndef __ASM_ARM_STRING_H
|
|
#define __ASM_ARM_STRING_H
|
|
|
|
#include <config.h>
|
|
|
|
/*
|
|
* We don't do inline string functions, since the
|
|
* optimised inline asm versions are not small.
|
|
*/
|
|
|
|
#undef __HAVE_ARCH_STRRCHR
|
|
extern char * strrchr(const char * s, int c);
|
|
|
|
#undef __HAVE_ARCH_STRCHR
|
|
extern char * strchr(const char * s, int c);
|
|
|
|
#ifdef CONFIG_USE_ARCH_MEMCPY
|
|
#define __HAVE_ARCH_MEMCPY
|
|
#endif
|
|
extern void * memcpy(void *, const void *, __kernel_size_t);
|
|
|
|
#undef __HAVE_ARCH_MEMMOVE
|
|
extern void * memmove(void *, const void *, __kernel_size_t);
|
|
|
|
#undef __HAVE_ARCH_MEMCHR
|
|
extern void * memchr(const void *, int, __kernel_size_t);
|
|
|
|
#undef __HAVE_ARCH_MEMZERO
|
|
#ifdef CONFIG_USE_ARCH_MEMSET
|
|
#define __HAVE_ARCH_MEMSET
|
|
#endif
|
|
extern void * memset(void *, int, __kernel_size_t);
|
|
|
|
#if 0
|
|
extern void __memzero(void *ptr, __kernel_size_t n);
|
|
|
|
#define memset(p,v,n) \
|
|
({ \
|
|
if ((n) != 0) { \
|
|
if (__builtin_constant_p((v)) && (v) == 0) \
|
|
__memzero((p),(n)); \
|
|
else \
|
|
memset((p),(v),(n)); \
|
|
} \
|
|
(p); \
|
|
})
|
|
|
|
#define memzero(p,n) ({ if ((n) != 0) __memzero((p),(n)); (p); })
|
|
#else
|
|
extern void memzero(void *ptr, __kernel_size_t n);
|
|
#endif
|
|
|
|
#endif
|