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a47e5bb576
Compiling with GCC 4.8 yields several instances of
crypto/vmac.c: In function ‘vmac_final’:
crypto/vmac.c:616:9: warning: value computed is not used [-Wunused-value]
memset(&mac, 0, sizeof(vmac_t));
^
arch/alpha/include/asm/string.h:31:25: note: in definition of macro ‘memset’
? __builtin_memset((s),0,(n)) \
^
Converting the macro to an inline function eliminates this problem.
However, doing only that causes problems with the GCC 3.x series. The
inline function cannot be named "memset", as otherwise we wind up with
recursion via __builtin_memset. Solve this by adjusting the symbols
such that __memset is the inline, and ___memset is the real function.
Signed-off-by: Richard Henderson <rth@twiddle.net>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
#ifndef __ALPHA_STRING_H__
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#define __ALPHA_STRING_H__
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#ifdef __KERNEL__
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/*
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* GCC of any recent vintage doesn't do stupid things with bcopy.
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* EGCS 1.1 knows all about expanding memcpy inline, others don't.
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*
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* Similarly for a memset with data = 0.
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*/
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#define __HAVE_ARCH_MEMCPY
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extern void * memcpy(void *, const void *, size_t);
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#define __HAVE_ARCH_MEMMOVE
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extern void * memmove(void *, const void *, size_t);
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/* For backward compatibility with modules. Unused otherwise. */
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extern void * __memcpy(void *, const void *, size_t);
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#define memcpy __builtin_memcpy
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#define __HAVE_ARCH_MEMSET
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extern void * __constant_c_memset(void *, unsigned long, size_t);
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extern void * ___memset(void *, int, size_t);
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extern void * __memset(void *, int, size_t);
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extern void * memset(void *, int, size_t);
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/* For gcc 3.x, we cannot have the inline function named "memset" because
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the __builtin_memset will attempt to resolve to the inline as well,
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leading to a "sorry" about unimplemented recursive inlining. */
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extern inline void *__memset(void *s, int c, size_t n)
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{
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if (__builtin_constant_p(c)) {
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if (__builtin_constant_p(n)) {
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return __builtin_memset(s, c, n);
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} else {
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unsigned long c8 = (c & 0xff) * 0x0101010101010101UL;
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return __constant_c_memset(s, c8, n);
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}
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}
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return ___memset(s, c, n);
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}
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#define memset __memset
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#define __HAVE_ARCH_STRCPY
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extern char * strcpy(char *,const char *);
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#define __HAVE_ARCH_STRNCPY
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extern char * strncpy(char *, const char *, size_t);
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#define __HAVE_ARCH_STRCAT
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extern char * strcat(char *, const char *);
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#define __HAVE_ARCH_STRNCAT
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extern char * strncat(char *, const char *, size_t);
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#define __HAVE_ARCH_STRCHR
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extern char * strchr(const char *,int);
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#define __HAVE_ARCH_STRRCHR
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extern char * strrchr(const char *,int);
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#define __HAVE_ARCH_STRLEN
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extern size_t strlen(const char *);
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#define __HAVE_ARCH_MEMCHR
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extern void * memchr(const void *, int, size_t);
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/* The following routine is like memset except that it writes 16-bit
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aligned values. The DEST and COUNT parameters must be even for
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correct operation. */
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#define __HAVE_ARCH_MEMSETW
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extern void * __memsetw(void *dest, unsigned short, size_t count);
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#define memsetw(s, c, n) \
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(__builtin_constant_p(c) \
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? __constant_c_memset((s),0x0001000100010001UL*(unsigned short)(c),(n)) \
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: __memsetw((s),(c),(n)))
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#endif /* __KERNEL__ */
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#endif /* __ALPHA_STRING_H__ */
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