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https://github.com/edk2-porting/linux-next.git
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4d14a45985
This mirrors commit ff60fab71b
(x86: Use __builtin_memset and __builtin_memcpy for memset/memcpy)
Signed-off-by: David S. Miller <davem@davemloft.net>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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* string.h: External definitions for optimized assembly string
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* routines for the Linux Kernel.
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*
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* Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1996,1997,1999 Jakub Jelinek (jakub@redhat.com)
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*/
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#ifndef __SPARC64_STRING_H__
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#define __SPARC64_STRING_H__
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/* Really, userland/ksyms should not see any of this stuff. */
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#ifdef __KERNEL__
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#include <asm/asi.h>
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#ifndef EXPORT_SYMTAB_STROPS
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/* First the mem*() things. */
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#define __HAVE_ARCH_MEMMOVE
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extern void *memmove(void *, const void *, __kernel_size_t);
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#define __HAVE_ARCH_MEMCPY
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#define memcpy(t, f, n) __builtin_memcpy(t, f, n)
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#define __HAVE_ARCH_MEMSET
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#define memset(s, c, count) __builtin_memset(s, c, count)
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#define __HAVE_ARCH_MEMSCAN
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#undef memscan
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#define memscan(__arg0, __char, __arg2) \
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({ \
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extern void *__memscan_zero(void *, size_t); \
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extern void *__memscan_generic(void *, int, size_t); \
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void *__retval, *__addr = (__arg0); \
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size_t __size = (__arg2); \
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\
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if(__builtin_constant_p(__char) && !(__char)) \
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__retval = __memscan_zero(__addr, __size); \
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else \
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__retval = __memscan_generic(__addr, (__char), __size); \
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\
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__retval; \
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})
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#define __HAVE_ARCH_MEMCMP
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extern int memcmp(const void *,const void *,__kernel_size_t);
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/* Now the str*() stuff... */
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#define __HAVE_ARCH_STRLEN
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extern __kernel_size_t strlen(const char *);
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#define __HAVE_ARCH_STRNCMP
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extern int strncmp(const char *, const char *, __kernel_size_t);
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#endif /* !EXPORT_SYMTAB_STROPS */
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#endif /* __KERNEL__ */
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#endif /* !(__SPARC64_STRING_H__) */
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