source: trunk/packages/xen-common/xen-common/tools/libaio/src/syscall-x86_64.h @ 34

#define __NR_io_setup           206
#define __NR_io_destroy         207
#define __NR_io_getevents       208
#define __NR_io_submit          209
#define __NR_io_cancel          210

#define __syscall_clobber "r11","rcx","memory" 
#define __syscall "syscall"

#define io_syscall1(type,fname,sname,type1,arg1)                        \
type fname(type1 arg1)                                                  \
{                                                                       \
long __res;                                                             \
__asm__ volatile (__syscall                                             \
        : "=a" (__res)                                                  \
        : "0" (__NR_##sname),"D" ((long)(arg1)) : __syscall_clobber );  \
return __res;                                                           \
}

#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2)             \
type fname(type1 arg1,type2 arg2)                                       \
{                                                                       \
long __res;                                                             \
__asm__ volatile (__syscall                                             \
        : "=a" (__res)                                                  \
        : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)) : __syscall_clobber ); \
return __res;                                                           \
}

#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3)  \
type fname(type1 arg1,type2 arg2,type3 arg3)                            \
{                                                                       \
long __res;                                                             \
__asm__ volatile (__syscall                                             \
        : "=a" (__res)                                                  \
        : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)),     \
                  "d" ((long)(arg3)) : __syscall_clobber);              \
return __res;                                                           \
}

#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4)             \
{                                                                       \
long __res;                                                             \
__asm__ volatile ("movq %5,%%r10 ;" __syscall                           \
        : "=a" (__res)                                                  \
        : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)),     \
          "d" ((long)(arg3)),"g" ((long)(arg4)) : __syscall_clobber,"r10" ); \
return __res;                                                           \
} 

#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
          type5,arg5)                                                   \
type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5)     \
{                                                                       \
long __res;                                                             \
__asm__ volatile ("movq %5,%%r10 ; movq %6,%%r8 ; " __syscall           \
        : "=a" (__res)                                                  \
        : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)),     \
          "d" ((long)(arg3)),"g" ((long)(arg4)),"g" ((long)(arg5)) :    \
        __syscall_clobber,"r8","r10" );                                 \
return __res;                                                           \
}