arch/i386/syscall_arch.h

   1 #define __SYSCALL_LL_E(x) \
   2 ((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
   3 ((union { long long ll; long l[2]; }){ .ll = x }).l[1]
   4 #define __SYSCALL_LL_O(x) __SYSCALL_LL_E((x))
   5
   6 static inline long __syscall0(long n)
   7 {
   8         unsigned long __ret;
   9         __asm__ __volatile__ ("call __vsyscall" : "=a"(__ret) : "a"(n) : "memory");
  10         return __ret;
  11 }
  12
  13 static inline long __syscall1(long n, long a1)
  14 {
  15         unsigned long __ret;
  16         __asm__ __volatile__ ("call __vsyscall" : "=a"(__ret) : "a"(n), "d"(a1) : "memory");
  17         return __ret;
  18 }
  19
  20 static inline long __syscall2(long n, long a1, long a2)
  21 {
  22         unsigned long __ret;
  23         __asm__ __volatile__ ("call __vsyscall" : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2) : "memory");
  24         return __ret;
  25 }
  26
  27 static inline long __syscall3(long n, long a1, long a2, long a3)
  28 {
  29         unsigned long __ret;
  30         __asm__ __volatile__ ("call __vsyscall" : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2), "D"(a3) : "memory");
  31         return __ret;
  32 }
  33
  34 static inline long __syscall4(long n, long a1, long a2, long a3, long a4)
  35 {
  36         unsigned long __ret;
  37         __asm__ __volatile__ ("call __vsyscall" : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2), "D"(a3), "S"(a4) : "memory");
  38         return __ret;
  39 }
  40
  41 static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5)
  42 {
  43         unsigned long __ret;
  44         __asm__ __volatile__ ("push %6 ; call __vsyscall ; add $4,%%esp" : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2), "D"(a3), "S"(a4), "g"(a5) : "memory");
  45         return __ret;
  46 }
  47
  48 static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
  49 {
  50         unsigned long __ret;
  51         __asm__ __volatile__ ("push %6 ; call __vsyscall6 ; add $4,%%esp" : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2), "D"(a3), "S"(a4), "g"(0+(long[]){a5, a6}) : "memory");
  52         return __ret;
  53 }