arch/s390x/syscall_arch.h

   1 #define __SYSCALL_LL_E(x) (x)
   2 #define __SYSCALL_LL_O(x) (x)
   3
   4 #define __asm_syscall(ret, ...) do { \
   5         __asm__ __volatile__ ("svc 0\n" \
   6         : ret : __VA_ARGS__ : "memory"); \
   7         return r2; \
   8         } while (0)
   9
  10 static inline long __syscall0(long n)
  11 {
  12         register long r1 __asm__("r1") = n;
  13         register long r2 __asm__("r2");
  14         __asm_syscall("=r"(r2), "r"(r1));
  15 }
  16
  17 static inline long __syscall1(long n, long a)
  18 {
  19         register long r1 __asm__("r1") = n;
  20         register long r2 __asm__("r2") = a;
  21         __asm_syscall("+r"(r2), "r"(r1));
  22 }
  23
  24 static inline long __syscall2(long n, long a, long b)
  25 {
  26         register long r1 __asm__("r1") = n;
  27         register long r2 __asm__("r2") = a;
  28         register long r3 __asm__("r3") = b;
  29         __asm_syscall("+r"(r2), "r"(r1), "r"(r3));
  30 }
  31
  32 static inline long __syscall3(long n, long a, long b, long c)
  33 {
  34         register long r1 __asm__("r1") = n;
  35         register long r2 __asm__("r2") = a;
  36         register long r3 __asm__("r3") = b;
  37         register long r4 __asm__("r4") = c;
  38         __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4));
  39 }
  40
  41 static inline long __syscall4(long n, long a, long b, long c, long d)
  42 {
  43         register long r1 __asm__("r1") = n;
  44         register long r2 __asm__("r2") = a;
  45         register long r3 __asm__("r3") = b;
  46         register long r4 __asm__("r4") = c;
  47         register long r5 __asm__("r5") = d;
  48         __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4), "r"(r5));
  49 }
  50
  51 static inline long __syscall5(long n, long a, long b, long c, long d, long e)
  52 {
  53         register long r1 __asm__("r1") = n;
  54         register long r2 __asm__("r2") = a;
  55         register long r3 __asm__("r3") = b;
  56         register long r4 __asm__("r4") = c;
  57         register long r5 __asm__("r5") = d;
  58         register long r6 __asm__("r6") = e;
  59         __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4), "r"(r5), "r"(r6));
  60 }
  61
  62 static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
  63 {
  64         if (n == SYS_mmap) return __syscall1(n, (long)(long[]){a,b,c,d,e,f});
  65
  66         register long r1 __asm__("r1") = n;
  67         register long r2 __asm__("r2") = a;
  68         register long r3 __asm__("r3") = b;
  69         register long r4 __asm__("r4") = c;
  70         register long r5 __asm__("r5") = d;
  71         register long r6 __asm__("r6") = e;
  72         register long r7 __asm__("r7") = f;
  73         __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4), "r"(r5), "r"(r6), "r"(r7));
  74 }
  75
  76 #define SYSCALL_USE_SOCKETCALL