syscall_arch.h raw

   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