syscall.c

来自「是关于linux2.5.1的完全源码」· C语言 代码 · 共 33 行

/* System call table for x86-64. */ 

#include <linux/linkage.h>
#include <linux/sys.h>
#include <linux/cache.h>
#include <linux/config.h>

/* No comment. */
#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
#else
#define sys_nfsservctl		sys_ni_syscall
#endif

#define __NO_STUBS

#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ; 
#undef _ASM_X86_64_UNISTD_H_
#include <asm-x86_64/unistd.h>

#undef __SYSCALL
#define __SYSCALL(nr, sym) [ nr ] = sym, 
#undef _ASM_X86_64_UNISTD_H_

typedef void (*sys_call_ptr_t)(void); 

extern void sys_ni_syscall(void);

sys_call_ptr_t sys_call_table[__NR_syscall_max+1] __cacheline_aligned = { 
	/* Smells like a like a compiler bug -- it doesn't work when the & below is removed. */ 
	[0 ... __NR_syscall_max] = &sys_ni_syscall,
#include <asm-x86_64/unistd.h>
};