unistd.h

嵌入式系统设计与实验教材二源码linux内核移植与编译

#define __NR_setfsuid32			(__NR_SYSCALL_BASE+215)
#define __NR_setfsgid32			(__NR_SYSCALL_BASE+216)
#define __NR_getdents64			(__NR_SYSCALL_BASE+217)
#define __NR_pivot_root			(__NR_SYSCALL_BASE+218)
#define __NR_mincore			(__NR_SYSCALL_BASE+219)
#define __NR_madvise			(__NR_SYSCALL_BASE+220)
#define __NR_fcntl64			(__NR_SYSCALL_BASE+221)
					/* 222 for tux */
#define __NR_security			(__NR_SYSCALL_BASE+223)
#define __NR_gettid			(__NR_SYSCALL_BASE+224)
#define __NR_readahead			(__NR_SYSCALL_BASE+225)
#if 0 /* allocated in 2.4 */
#define __NR_setxattr			(__NR_SYSCALL_BASE+226)
#define __NR_lsetxattr 			(__NR_SYSCALL_BASE+227)
#define __NR_fsetxattr	 		(__NR_SYSCALL_BASE+228)
#define __NR_getxattr			(__NR_SYSCALL_BASE+229)
#define __NR_lgetxattr 			(__NR_SYSCALL_BASE+230)
#define __NR_fgetxattr 			(__NR_SYSCALL_BASE+231)
#define __NR_listxattr	 		(__NR_SYSCALL_BASE+232)
#define __NR_llistxattr			(__NR_SYSCALL_BASE+233)
#define __NR_flistxattr			(__NR_SYSCALL_BASE+234)
#define __NR_removexattr		(__NR_SYSCALL_BASE+235)
#define __NR_lremovexattr		(__NR_SYSCALL_BASE+236)
#define __NR_fremovexattr		(__NR_SYSCALL_BASE+237)
#define __NR_tkill			(__NR_SYSCALL_BASE+238)
#endif

/*
 * The following SWIs are ARM private.
 */
#define __ARM_NR_BASE			(__NR_SYSCALL_BASE+0x0f0000)
#define __ARM_NR_breakpoint		(__ARM_NR_BASE+1)
#define __ARM_NR_cacheflush		(__ARM_NR_BASE+2)
#define __ARM_NR_usr26			(__ARM_NR_BASE+3)
#define __ARM_NR_usr32			(__ARM_NR_BASE+4)

#define __sys2(x) #x
#define __sys1(x) __sys2(x)

#ifndef __syscall
#define __syscall(name) "swi\t" __sys1(__NR_##name) "\n\t"
#endif

#define __syscall_return(type, res)					\
do {									\
	if ((unsigned long)(res) >= (unsigned long)(-125)) {		\
		errno = -(res);						\
		res = -1;						\
	}								\
	return (type) (res);						\
} while (0)

#define _syscall0(type,name)						\
type name(void) {							\
  long __res;								\
  __asm__ __volatile__ (						\
  __syscall(name)							\
  "mov %0,r0"								\
  :"=r" (__res) : : "r0","lr");						\
  __syscall_return(type,__res);						\
}

#define _syscall1(type,name,type1,arg1)					\
type name(type1 arg1) {							\
  long __res;								\
  __asm__ __volatile__ (						\
  "mov\tr0,%1\n\t"							\
  __syscall(name)							\
  "mov %0,r0"								\
        : "=r" (__res)							\
        : "r" ((long)(arg1))						\
	: "r0","lr");							\
  __syscall_return(type,__res);						\
}

#define _syscall2(type,name,type1,arg1,type2,arg2)			\
type name(type1 arg1,type2 arg2) {					\
  long __res;								\
  __asm__ __volatile__ (						\
  "mov\tr0,%1\n\t"							\
  "mov\tr1,%2\n\t"							\
  __syscall(name)							\
  "mov\t%0,r0"								\
        : "=r" (__res)							\
        : "r" ((long)(arg1)),"r" ((long)(arg2))				\
	: "r0","r1","lr");						\
  __syscall_return(type,__res);						\
}


#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)		\
type name(type1 arg1,type2 arg2,type3 arg3) {				\
  long __res;								\
  __asm__ __volatile__ (						\
  "mov\tr0,%1\n\t"							\
  "mov\tr1,%2\n\t"							\
  "mov\tr2,%3\n\t"							\
  __syscall(name)							\
  "mov\t%0,r0"								\
        : "=r" (__res)							\
        : "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3))	\
        : "r0","r1","r2","lr");						\
  __syscall_return(type,__res);						\
}


#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)		\
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {				\
  long __res;										\
  __asm__ __volatile__ (								\
  "mov\tr0,%1\n\t"									\
  "mov\tr1,%2\n\t"									\
  "mov\tr2,%3\n\t"									\
  "mov\tr3,%4\n\t"									\
  __syscall(name)									\
  "mov\t%0,r0"										\
  	: "=r" (__res)									\
  	: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4))	\
  	: "r0","r1","r2","r3","lr");							\
  __syscall_return(type,__res);								\
}
  

#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5)	\
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) {			\
  long __res;										\
  __asm__ __volatile__ (								\
  "mov\tr0,%1\n\t"									\
  "mov\tr1,%2\n\t"									\
  "mov\tr2,%3\n\t"									\
  "mov\tr3,%4\n\t"									\
  "mov\tr4,%5\n\t"									\
  __syscall(name)									\
  "mov\t%0,r0"										\
  	: "=r" (__res)									\
  	: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4)),	\
	  "r" ((long)(arg5))								\
	: "r0","r1","r2","r3","r4","lr");						\
  __syscall_return(type,__res);								\
}

#ifdef __KERNEL_SYSCALLS__

static inline long idle(void)
{
	extern long sys_idle(void);
	return sys_idle();
}

static inline long pause(void)
{
	extern long sys_pause(void);
	return sys_pause();
}

static inline long sync(void)
{
	extern long sys_sync(void);
	return sys_sync();
}

static inline pid_t setsid(void)
{
	extern long sys_setsid(void);
	return sys_setsid();
}

static inline long write(int fd, const char *buf, off_t count)
{
	extern long sys_write(int, const char *, int);
	return sys_write(fd, buf, count);
}

static inline long read(int fd, char *buf, off_t count)
{
	extern long sys_read(int, char *, int);
	return sys_read(fd, buf, count);
}

static inline off_t lseek(int fd, off_t offset, int count)
{
	extern off_t sys_lseek(int, off_t, int);
	return sys_lseek(fd, offset, count);
}

static inline long dup(int fd)
{
	extern long sys_dup(int);
	return sys_dup(fd);
}

static inline long open(const char *file, int flag, int mode)
{
	extern long sys_open(const char *, int, int);
	return sys_open(file, flag, mode);
}

static inline long close(int fd)
{
	extern long sys_close(unsigned int);
	return sys_close(fd);
}

static inline long _exit(int exitcode)
{
	extern long sys_exit(int) __attribute__((noreturn));
	return sys_exit(exitcode);
}

static inline pid_t waitpid(pid_t pid, int *wait_stat, int options)
{
	return sys_wait4((int)pid, wait_stat, options, NULL);
}

static inline long delete_module(const char *name)
{
	extern long sys_delete_module(const char *name);
	return sys_delete_module(name);
}

static inline pid_t wait(int * wait_stat)
{
	return sys_wait4(-1, wait_stat, 0, NULL);
}

/*
 * The following two can't be eliminated yet - they rely on
 * specific conditions.
 */
static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp);

#endif
#endif /* __ASM_ARM_UNISTD_H */