Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-05-08 19:11:53 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

riscv: assembler versions of memcpy, memmove, memset

Browse source 
Provide optimized versions of memcpy(), memmove(), memset() copied from
the Linux kernel.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
This commit is contained in:
Heinrich Schuchardt 2021-03-27 12:37:04 +01:00 • committed by Leo Yu-Chi Liang
parent f709a0b6f9
commit 8f0dc4cfd1
6 changed files with 383 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

38
arch/riscv/include/asm/string.h
View file

@ -19,31 +19,25 @@
#undef __HAVE_ARCH_STRRCHR
#undef __HAVE_ARCH_STRCHR
#undef __HAVE_ARCH_MEMCPY
#undef __HAVE_ARCH_MEMMOVE
#undef __HAVE_ARCH_MEMCHR
#undef __HAVE_ARCH_MEMZERO
#undef __HAVE_ARCH_MEMSET
#ifdef CONFIG_MARCO_MEMSET
#define memset(_p, _v, _n) \
(typeof(_p) (p) = (_p); \
typeof(_v) (v) = (_v); \
typeof(_n) (n) = (_n); \
{ \
if ((n) != 0) { \
if (__builtin_constant_p((v)) && (v) == 0) \
__memzero((p), (n)); \
else \
memset((p), (v), (n)); \
} \
(p); \
})
#define memzero(_p, _n) \
(typeof(_p) (p) = (_p); \
typeof(_n) (n) = (_n); \
{ if ((n) != 0) __memzero((p), (n)); (p); })
#undef __HAVE_ARCH_MEMCPY
#if CONFIG_IS_ENABLED(USE_ARCH_MEMCPY)
#define __HAVE_ARCH_MEMCPY
#endif
extern void *memcpy(void *, const void *, __kernel_size_t);
#undef __HAVE_ARCH_MEMMOVE
#if CONFIG_IS_ENABLED(USE_ARCH_MEMMOVE)
#define __HAVE_ARCH_MEMMOVE
#endif
extern void *memmove(void *, const void *, __kernel_size_t);
#undef __HAVE_ARCH_MEMZERO
#if CONFIG_IS_ENABLED(USE_ARCH_MEMSET)
#define __HAVE_ARCH_MEMSET
#endif
extern void *memset(void *, int, __kernel_size_t);
#endif /* __ASM_RISCV_STRING_H */