mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
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>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#ifndef __ASM_ARM_STRING_H
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#define __ASM_ARM_STRING_H
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#include <config.h>
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/*
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* We don't do inline string functions, since the
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* optimised inline asm versions are not small.
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*/
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#undef __HAVE_ARCH_STRRCHR
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extern char * strrchr(const char * s, int c);
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#undef __HAVE_ARCH_STRCHR
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extern char * strchr(const char * s, int c);
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#ifdef CONFIG_USE_ARCH_MEMCPY
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#define __HAVE_ARCH_MEMCPY
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#endif
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extern void * memcpy(void *, const void *, __kernel_size_t);
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#undef __HAVE_ARCH_MEMMOVE
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extern void * memmove(void *, const void *, __kernel_size_t);
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#undef __HAVE_ARCH_MEMCHR
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extern void * memchr(const void *, int, __kernel_size_t);
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#undef __HAVE_ARCH_MEMZERO
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#ifdef CONFIG_USE_ARCH_MEMSET
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#define __HAVE_ARCH_MEMSET
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#endif
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extern void * memset(void *, int, __kernel_size_t);
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#if 0
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extern void __memzero(void *ptr, __kernel_size_t n);
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#define memset(p,v,n) \
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({ \
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if ((n) != 0) { \
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if (__builtin_constant_p((v)) && (v) == 0) \
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__memzero((p),(n)); \
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else \
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memset((p),(v),(n)); \
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} \
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(p); \
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})
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#define memzero(p,n) ({ if ((n) != 0) __memzero((p),(n)); (p); })
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#else
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extern void memzero(void *ptr, __kernel_size_t n);
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#endif
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#endif
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