linux/arch/alpha/kernel/alpha_ksyms.c
Richard Henderson a47e5bb576 alpha: Eliminate compiler warning from memset macro
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>
2013-11-16 16:33:09 -08:00

103 lines
2.5 KiB
C

/*
* linux/arch/alpha/kernel/alpha_ksyms.c
*
* Export the alpha-specific functions that are needed for loadable
* modules.
*/
#include <linux/module.h>
#include <asm/console.h>
#include <asm/uaccess.h>
#include <asm/checksum.h>
#include <asm/fpu.h>
#include <asm/machvec.h>
#include <linux/syscalls.h>
/* these are C runtime functions with special calling conventions: */
extern void __divl (void);
extern void __reml (void);
extern void __divq (void);
extern void __remq (void);
extern void __divlu (void);
extern void __remlu (void);
extern void __divqu (void);
extern void __remqu (void);
EXPORT_SYMBOL(alpha_mv);
EXPORT_SYMBOL(callback_getenv);
EXPORT_SYMBOL(callback_setenv);
EXPORT_SYMBOL(callback_save_env);
/* platform dependent support */
EXPORT_SYMBOL(strcat);
EXPORT_SYMBOL(strcpy);
EXPORT_SYMBOL(strlen);
EXPORT_SYMBOL(strncpy);
EXPORT_SYMBOL(strncat);
EXPORT_SYMBOL(strchr);
EXPORT_SYMBOL(strrchr);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(__memcpy);
EXPORT_SYMBOL(__memset);
EXPORT_SYMBOL(___memset);
EXPORT_SYMBOL(__memsetw);
EXPORT_SYMBOL(__constant_c_memset);
EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
EXPORT_SYMBOL(alpha_read_fp_reg);
EXPORT_SYMBOL(alpha_read_fp_reg_s);
EXPORT_SYMBOL(alpha_write_fp_reg);
EXPORT_SYMBOL(alpha_write_fp_reg_s);
/* Networking helper routines. */
EXPORT_SYMBOL(csum_tcpudp_magic);
EXPORT_SYMBOL(ip_compute_csum);
EXPORT_SYMBOL(ip_fast_csum);
EXPORT_SYMBOL(csum_partial_copy_nocheck);
EXPORT_SYMBOL(csum_partial_copy_from_user);
EXPORT_SYMBOL(csum_ipv6_magic);
#ifdef CONFIG_MATHEMU_MODULE
extern long (*alpha_fp_emul_imprecise)(struct pt_regs *, unsigned long);
extern long (*alpha_fp_emul) (unsigned long pc);
EXPORT_SYMBOL(alpha_fp_emul_imprecise);
EXPORT_SYMBOL(alpha_fp_emul);
#endif
/*
* The following are specially called from the uaccess assembly stubs.
*/
EXPORT_SYMBOL(__copy_user);
EXPORT_SYMBOL(__do_clear_user);
/*
* SMP-specific symbols.
*/
#ifdef CONFIG_SMP
EXPORT_SYMBOL(_atomic_dec_and_lock);
#endif /* CONFIG_SMP */
/*
* The following are special because they're not called
* explicitly (the C compiler or assembler generates them in
* response to division operations). Fortunately, their
* interface isn't gonna change any time soon now, so it's OK
* to leave it out of version control.
*/
# undef memcpy
# undef memset
EXPORT_SYMBOL(__divl);
EXPORT_SYMBOL(__divlu);
EXPORT_SYMBOL(__divq);
EXPORT_SYMBOL(__divqu);
EXPORT_SYMBOL(__reml);
EXPORT_SYMBOL(__remlu);
EXPORT_SYMBOL(__remq);
EXPORT_SYMBOL(__remqu);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memchr);