libc-top-half/musl/src/internal/aarch64/syscall.s

   1 .global __syscall
   2 .hidden __syscall
   3 .type __syscall,%function
   4 __syscall:
   5         uxtw x8,w0
   6         mov x0,x1
   7         mov x1,x2
   8         mov x2,x3
   9         mov x3,x4
  10         mov x4,x5
  11         mov x5,x6
  12         mov x6,x7
  13         svc 0
  14         ret